JP6951196B2 - Hydrogen fuel supply method and hydrogen supply system - Google Patents

Description

The present invention relates to a hydrogen fuel supply method and a hydrogen supply system, for example, a supply system and a method for a general vehicle using hydrogen as a fuel to fill hydrogen at a hydrogen station.

In recent years, hydrogen fuel has been attracting attention as a clean energy source in addition to conventional fuel oils such as gasoline as fuel for automobiles. Along with this, the development of a fuel cell vehicle (FCV: Fuel Cell Vehicle) powered by hydrogen fuel is underway. In order to popularize such fuel cell vehicles (FCVs), it is necessary to expand hydrogen stations capable of rapidly filling hydrogen fuel. At the hydrogen station, in order to rapidly fill the FCV vehicle with hydrogen fuel, a multi-stage accumulator with a plurality of accumulators accumulating hydrogen fuel compressed to a high pressure by a compressor is arranged. Then, by filling while switching the accumulator to be used, the differential pressure between the pressure in the accumulator and the pressure in the fuel tank of the FCV vehicle is kept large, and hydrogen fuel is rapidly filled from the accumulator to the fuel tank by the differential pressure ( For example, see Patent Document 1).

At present, the number of FCV vehicles is still significantly smaller than that of gasoline-powered vehicles. Therefore, the number of hydrogen stations arriving at the hydrogen station is not always crowded. Therefore, in the hydrogen station, for example, one set of supply equipment such as a multi-stage accumulator and a compressor is arranged. Therefore, if hydrogen fuel is supplied from the multi-stage accumulator to the first FCV vehicle, the hydrogen fuel in the multi-stage accumulator will decrease. Therefore, in order to fill the second FCV vehicle, the accumulator Need to be recompressed. When the second FCV vehicle arrives at the hydrogen station while supplying hydrogen fuel to the first vehicle, until the decompression to the accumulator, which has been reduced by filling the first FCV vehicle, is completed. The second FCV vehicle will have to wait. Therefore, if the user vehicles arriving for filling are concentrated in one hydrogen station, there is a problem that the time required for filling including the waiting time becomes long. In order to solve such a problem, it is conceivable to arrange a plurality of sets of supply equipment such as a multi-stage accumulator and a compressor in the hydrogen station. However, even arranging individual equipment such as accumulators and compressors requires a high cost. It is cost-effective to increase the set of supply equipment such as multi-stage accumulators and compressors in the hydrogen station at a large cost in a situation where the number of units arriving at the hydrogen station is not always crowded. It is also a difficult situation in terms of.

Here, if hydrogen fuel is supplied from the multi-stage accumulator for the first FCV vehicle and the second FCV vehicle arrives at the hydrogen station while the hydrogen fuel is being supplied to the first vehicle, It is also considered to supply hydrogen fuel to the second FCV vehicle directly from the compressor instead of from the multi-stage accumulator (see, for example, Patent Document 2). However, the direct filling from the compressor has a slower filling rate than the differential pressure filling from the multi-stage accumulator.

JP-A-2015-197700 Japanese Unexamined Patent Publication No. 2016-08992

Therefore, one aspect of the present invention can reduce the delay in the filling time of hydrogen fuel in the second FCV vehicle without providing a set of supply equipment such as a multi-stage accumulator and a compressor for two vehicles. Provide a hydrogen fuel supply method and a hydrogen supply system.

The method for supplying hydrogen fuel according to one aspect of the present invention is
A first containing pressure information regarding a first in-vehicle device mounted on a first fuel cell vehicle (FCV) powered by hydrogen fuel to a first hydrogen storage container mounted on the first fuel cell vehicle. And the process of receiving information about
Of the first and second dispensers commonly connected to a set of a multi-stage accumulator in which hydrogen fuel is accumulating and a pre-accumulator less than the number of multi-stage accumulators, the first dispenser is used for multi-stage accumulator. The process of filling the first hydrogen storage container with hydrogen fuel from the vessel,
A second fuel cell vehicle (FCV) powered by hydrogen fuel, after the start of receiving the first information and before the filling of the first hydrogen storage container with hydrogen fuel is completed. The process of receiving the second information including the pressure information regarding the second hydrogen storage container mounted on the second fuel cell vehicle from the second vehicle-mounted device, and the process of receiving the second information including the pressure information.
A step of comparing the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage container at the time when the second information is received, and
Using the first and second dispensers from the set of the multi-stage accumulator and the pre-accumulator, the first and second hydrogen storage containers after the time when the second information is received are filled with hydrogen fuel in parallel. A process of selecting a filling flow corresponding to the comparison result from a plurality of filling flows in the case, and
From the time when the second information is received, the process of filling the first and second hydrogen storage containers in parallel from the set of the multi-stage accumulator and the preliminary accumulator according to the selected filling flow, and the process of filling the hydrogen fuel in parallel.
It is characterized by being equipped with.

Further, as a result of comparing the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage container at the time when the second information is received, the pressure of the first hydrogen storage container is the second hydrogen storage. If it is less than the pressure of the container
A step of determining whether or not the time until the pressure of the first hydrogen storage container becomes the same as the pressure of the second hydrogen storage container within a predetermined time after receiving the second information is further provided.
If the time from the time when the second information is received until the pressure of the first hydrogen storage container becomes the same as the pressure of the second hydrogen storage container is within a predetermined time, the first hydrogen storage is performed. The first hydrogen storage container is filled using the first dispenser while waiting for the filling of the second hydrogen storage container until the pressure of the container becomes the same as the pressure of the second hydrogen storage container. After the pressure of the hydrogen storage vessel becomes the same as the pressure of the second hydrogen storage vessel, the accumulator used in the multiple accumulators of the set of the multi-stage accumulator and the preliminary accumulator is switched at the same timing. The first dispenser is used to fill the first hydrogen storage container, and in parallel, the second dispenser is used to fill the second hydrogen storage container.
If the time from the time when the second information is received until the pressure of the first hydrogen storage container becomes the same as the pressure of the second hydrogen storage container is not within a predetermined time, the second information is received. After that, the first hydrogen storage container was filled with the first dispenser while switching the accumulator used in the plurality of accumulators in the set of the multi-stage accumulator and the preliminary accumulator, and in parallel, A second dispenser is used while switching the accumulator used in a plurality of accumulators in a set of a multi-stage accumulator and a preliminary accumulator independently of the switching for filling the first hydrogen storage container. It is preferable to fill the hydrogen storage container of.

Further, as a result of comparing the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage container at the time when the second information is received, the pressure of the first hydrogen storage container is the second hydrogen. If it is greater than the pressure of the storage container
After receiving the second information, the first hydrogen storage container is filled with the first dispenser while switching the accumulator used among the plurality of accumulators of the multi-stage accumulator, and in parallel, the multi-stage accumulator is filled. A second dispenser is used while switching the accumulator used in a plurality of accumulators in a set of accumulator and reserve accumulator independently of the switching for filling the first hydrogen storage container. It is preferable to fill the hydrogen storage container.

Further, the second hydrogen storage container starts filling hydrogen fuel from the accumulator used for filling the first hydrogen storage container among the plurality of accumulators of the multi-stage accumulator, and the plurality of multi-stage accumulators. It is preferable to continue filling while switching the accumulators in order, and to fill from the reserve accumulator when the filling from the final stage accumulators of the plurality of accumulators of the multi-stage accumulator is not completed yet.

Further, as a result of comparing the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage container at the time when the second information was received, the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage were compared. If the difference from the pressure of the container is less than the threshold
After receiving the second information, the first hydrogen storage is performed using the first dispenser while switching the accumulator used in the plurality of accumulators in the set of the multi-stage accumulator and the preliminary accumulator at the same timing. It is preferable to fill the containers and in parallel fill the second hydrogen storage container with a second dispenser.

The hydrogen supply system of one aspect of the present invention is
A multi-stage accumulator with hydrogen fuel accumulating and
Preliminary accumulators with less hydrogen fuel than the number of multi-stage accumulators
The first and second dispensers that supply hydrogen fuel, which are commonly connected to the set of multi-stage accumulator and reserve accumulator,
Pressure on the first hydrogen storage container mounted on the first fuel cell vehicle from the first in-vehicle device mounted on the first fuel cell vehicle (FCV) powered by the hydrogen fuel arriving at the hydrogen station. A second vehicle mounted on a second fuel cell vehicle (FCV) powered by hydrogen fuel, which receives the first information including information and arrives at the hydrogen station later than the first fuel cell vehicle. A receiver that receives a second piece of information, including pressure information, from the vessel about the second hydrogen storage container mounted on the second fuel cell vehicle.
A comparison unit that compares the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage container at the time when the second information is received, and
Using the first and second dispensers from the set of the multi-stage accumulator and the pre-accumulator, the first and second hydrogen storage containers after the time when the second information is received are filled with hydrogen fuel in parallel. A selection unit that selects a filling flow corresponding to the comparison result from a plurality of filling flows in the case,
With
According to the selected filling flow, the first hydrogen storage container is filled with the first dispenser from a plurality of accumulators in the set of the multi-stage accumulator and the preliminary accumulator, and the second dispenser is prepared in parallel. It is characterized in that it is used to fill a second hydrogen storage container.

Further, when the first hydrogen storage container is filled with the first dispenser and the second hydrogen storage container is filled with the second dispenser in parallel, the second hydrogen storage container is filled. It is also preferable that the filling is performed at a lower speed than the filling in the first hydrogen storage container.

According to one aspect of the present invention, it is possible to reduce the delay in the filling time of hydrogen fuel in the second FCV vehicle without providing a set of supply equipment such as a multi-stage accumulator and a compressor for two vehicles.

It is an example of the block diagram which shows the structure of the hydrogen fuel supply system of the hydrogen station in Embodiment 1. FIG. It is a block diagram which shows an example of the internal structure of the control circuit in Embodiment 1. FIG. It is a figure which shows an example of the time chart of the pressure of each accumulator of the multi-stage accumulator, the pressure of the preliminary accumulator, and the fuel tank pressure of the FCV vehicle in the first embodiment. It is a flowchart which shows a part of the main part process of the hydrogen fuel supply method in Embodiment 1. FIG. It is a flowchart which shows the other part of the main part process of the hydrogen fuel supply method in Embodiment 1. FIG. It is a flowchart which shows the other part of the main part process of the hydrogen fuel supply method in Embodiment 1. FIG. This is a modified example of the configuration diagram showing the configuration of the hydrogen fuel supply system of the hydrogen station in the first embodiment. It is another modification of the block diagram which shows the structure of the hydrogen fuel supply system of the hydrogen station in Embodiment 1. FIG. This is a modified example of the configuration diagram showing the configuration of the hydrogen fuel supply system of the hydrogen station in the first embodiment. It is another modification of the block diagram which shows the structure of the hydrogen fuel supply system of the hydrogen station in Embodiment 1. FIG. It is another modification of the block diagram which shows the structure of the hydrogen fuel supply system of the hydrogen station in Embodiment 1. FIG. It is a flowchart which shows the other part of the main part process of the hydrogen fuel supply method in Embodiment 2. It is a flowchart which shows the other part of the main part process of the hydrogen fuel supply method in Embodiment 2.

Embodiment 1.
FIG. 1 is an example of a configuration diagram showing a configuration of a hydrogen fuel supply system of a hydrogen station according to the first embodiment. In FIG. 1, the hydrogen fuel supply system 500 is arranged in the hydrogen station 102. The hydrogen fuel supply system 500 includes a multi-stage accumulator 101, a preliminary accumulator 19, a plurality of dispensers 30a and 30b, a compressor 40, and a control circuit 100. The multi-stage accumulator 101 is composed of a plurality of accumulators 10, 12, and 14 having a multi-stage lower limit pressure. In the first embodiment, the number of preliminary accumulators 19 which is smaller than the number of accumulators 10, 12, and 14 constituting the multi-stage accumulator 101 is arranged. In the example of FIG. 1, three accumulators 10, 12, and 14 constitute a multi-stage accumulator 101, and one reserve accumulator 19 is arranged. In the example of FIG. 1, the accumulator 10 acts as a low pressure bank (1st bank) used until the lower limit pressure is the lowest. The accumulator 12 acts as a medium pressure bank (2nd bank) having an intermediate lower limit pressure. The accumulator 14 acts as a high-pressure bank (3rd bank) having a high lower limit pressure. The reserve accumulator 19 acts as a reserve bank (4th bank). In addition, a cadre 302, an intermediate accumulator 304, and / or a hydrogen production apparatus 308 are arranged in the hydrogen station 102. Further, a hydrogen trailer 306 that fills and delivers hydrogen arrives in the hydrogen station 102.

Further, in FIG. 1, the suction side of the compressor 40 is connected to the cadre 302 via a valve 322 by a pipe. Similarly, the suction side of the compressor 40 is connected to the intermediate accumulator 304 by piping via a valve 324. Similarly, the suction side of the compressor 40 is connected to the filling tank of the hydrogen trailer 306 by a pipe via a valve 326. Similarly, the suction side of the compressor 40 is connected to the discharge side of the hydrogen production apparatus 308 via a valve 328 by piping.

The discharge side of the compressor 40 is connected to the accumulator 10 via a valve 21 by a pipe. Similarly, the discharge side of the compressor 40 is connected to the accumulator 12 via a valve 23 by a pipe. Similarly, the discharge side of the compressor 40 is connected to the accumulator 14 via a valve 25 by a pipe. Similarly, the discharge side of the compressor 40 is connected to the preliminary accumulator 19 via a valve 27 by a pipe.

Further, the accumulator 10 is connected to the dispenser 30a via a valve 22a by a pipe, and is also connected to the dispenser 30b via a valve 22b by a pipe. Further, the accumulator 12 is connected to the dispenser 30a via a valve 24a by a pipe, and is also connected to the dispenser 30b via a valve 24b by a pipe. Further, the accumulator 14 is connected to the dispenser 30a via a valve 26a by a pipe, and is also connected to the dispenser 30b via a valve 26b by a pipe. Further, the preliminary accumulator 19 is connected to the dispenser 30a via a valve 28a by a pipe, and is also connected to the dispenser 30b via a valve 28b by a pipe. As described above, the number of the dispensers 30a (first dispenser) and the dispenser 30b (second dispenser) is smaller than the number of the accumulators 10, 12, and 14 constituting the multi-stage accumulator 101 and the multi-stage accumulator 101. It is commonly connected to the set with 19.

The pressure inside the curdle 302 is measured by the pressure gauge 312. The pressure in the intermediate accumulator 304 is measured by the pressure gauge 314. The pressure in the filling tank of the hydrogen trailer 306 is measured by the pressure gauge 316. The discharge pressure of the hydrogen production apparatus 308 is measured by a pressure gauge 318.

Further, the pressure in the accumulator 10 is measured by the pressure gauge 11. The pressure in the accumulator 12 is measured by the pressure gauge 13. The pressure in the accumulator 14 is measured by the pressure gauge 15. The pressure in the preliminary accumulator 19 is measured by the pressure gauge 17.

A cooler 32a (pre-cooler) is arranged in the dispenser 30a to cool the hydrogen fuel supplied from the multi-stage accumulator 101 or the pre-accumulator 19 to, for example, −40 ° C. Therefore, the dispenser 30a fills the fuel tank 202a mounted on the FCV vehicle 200a (first FCV) with the cooled hydrogen fuel by using the differential pressure. In addition, a repeater 34a is arranged in or near the dispenser 30a so that it can communicate with the in-vehicle device 204a in the FCV vehicle 200a (fuel cell vehicle (FCV) powered by hydrogen fuel) that has arrived at the hydrogen station 102. It is composed. For example, it is configured to enable wireless communication using infrared rays.

Similarly, a cooler 32b (pre-cooler) is arranged in the dispenser 30b to cool the hydrogen fuel supplied from the multi-stage accumulator 101 or the pre-accumulator 19 to, for example, −40 ° C. Therefore, the dispenser 30b fills the fuel tank 202b mounted on the FCV vehicle 200b (second FCV) with the cooled hydrogen fuel by using the differential pressure. In addition, a repeater 34b is arranged in or near the dispenser 30b so that it can communicate with the in-vehicle device 204b in the FCV vehicle 200b (fuel cell vehicle (FCV) powered by hydrogen fuel) that has arrived at the hydrogen station 102. It is composed. For example, it is configured to enable wireless communication using infrared rays.

In normal times, the hydrogen fuel accumulated in the tank of the cadre 302, the intermediate compressor 304, or the hydrogen trailer 306 is reduced to a low pressure (for example, 0.6 MPa) by each regulator (not shown) controlled by the control circuit 100. It is supplied to the suction side of the compressor 40 in a depressurized state. Similarly, the hydrogen fuel produced by the hydrogen production apparatus 308 is supplied to the suction side of the compressor 40 at a low pressure (for example, 0.6 MPa). _{Therefore, the primary pressure PIN} on the suction side of the compressor 40 is low during normal times (low hours). Under the control of the control circuit 100, the compressor 40 compresses the hydrogen fuel supplied from the cadre 302, the intermediate accumulator 304, the hydrogen trailer 306, or the hydrogen production apparatus 308 at a low pressure, and accumulates the pressure of each of the multi-stage accumulators 101. It is supplied to the vessels 10, 12, 14, and the preliminary accumulator 19. The compressor 40 compresses the inside of each of the accumulators 10, 12, and 14 of the multi-stage accumulator 101 and the inside of the preliminary accumulator 19 until a predetermined high pressure (for example, 82 MPa) is reached. In other words, the compressor 40 compresses _{until the secondary pressure P OUT} on the discharge side reaches a predetermined high pressure (for example, 82 MPa). Whether the partner for supplying hydrogen fuel to the suction side of the compressor 40 is the curdle 302, the intermediate accumulator 304, the hydrogen trailer 306, or the hydrogen production device 308 is arranged on each pipe and corresponds to each other. The opening and closing of the valves 322, 324, 326, and 328 may be determined by the control circuit 100. Similarly, whether the compressor 40 supplies hydrogen fuel to the accumulators 10, 12, 14 or the preliminary accumulator 19 is determined by the corresponding valves 21, 23, arranged on the respective pipes. The opening and closing of 25 and 27 may be determined by the control circuit 100. Alternatively, it may be controlled to supply two or more accumulators at the same time.

_{In the above-mentioned example, the pressure PIN} for supplying hydrogen fuel to the suction side of the compressor 40 is controlled to a predetermined low pressure (for example, 0.6 MPa), but the pressure is not limited to this. .. The suction side of the compressor 40 without reducing the pressure of the hydrogen fuel accumulated in the cadre 302, the intermediate accumulator 304, or the hydrogen trailer 306, or at a pressure higher than a predetermined low pressure (for example, 0.6 MPa). May be given to and compressed. In such a case, _{the pressure P on the suction side is not used as the compressor 40 by fixing the pressure PIN} (primary side pressure) on the suction side to a constant pressure (for example, 0.6 MPa). A high-pressure compressor of the type that can handle _{IN (primary pressure) variably is adopted.} For example, it is preferable to use a booster multi-stage step-up compressor having a suction side pressure _{PIN (primary side pressure) of, for example, 20 MPa or less.}

The hydrogen fuel accumulated in the multi-stage accumulator 101 and the preliminary accumulator 19 is cooled by the cooler 32a in the dispenser 30a and supplied from the dispenser 30a to the FCV vehicle 200a arriving in the hydrogen station 102. Similarly, the hydrogen fuel accumulated in the multi-stage accumulator 101 and the preliminary accumulator 19 is cooled by the cooler 32b in the dispenser 30b and supplied from the dispenser 30b to the FCV vehicle 200b arriving in the hydrogen station 102.

FIG. 2 is a configuration diagram showing an example of the internal configuration of the control circuit according to the first embodiment. In FIG. 2, the control circuit 100 includes a communication control circuit 50, a memory 51, a receiving unit 52, an end pressure / temperature calculation unit 54, a flow planning unit 56, a system control unit 58, a pressure recovery control unit 61, and a supply control unit. 63, a bank pressure receiving unit 66, a comparison unit 88, a selection unit 89, a standby time calculation unit 92, a determination unit 94, a determination unit 96, and storage devices 80, 82, 84, 90 such as a magnetic disk device are arranged. The pressure recovery control unit 61 includes a valve control unit 60 and a compressor control unit 62. The supply control unit 63 includes a dispenser control unit 64 and a valve control unit 65. Receiver 52, end pressure / temperature calculation unit 54, flow planning unit 56, system control unit 58, pressure recovery control unit 61 (valve control unit 60, compressor control unit 62), supply control unit 63 (dispenser control unit 64, Each "-unit" such as the valve control unit 65), the bank pressure receiving unit 66, the comparison unit 88, the selection unit 89, the standby time calculation unit 92, the determination unit 94, and the determination unit 96 includes a processing circuit and processes the same. The circuit includes an electric circuit, a computer, a processor, a circuit board, a semiconductor device, and the like. Further, a common processing circuit (same processing circuit) may be used for each “~ part”. Alternatively, different processing circuits (separate processing circuits) may be used. Receiver 52, end pressure / temperature calculation unit 54, flow planning unit 56, system control unit 58, pressure recovery control unit 61 (valve control unit 60, compressor control unit 62), supply control unit 63 (dispenser control unit 64, The input data required in the valve control unit 65), the bank pressure receiving unit 66, the comparison unit 88, the selection unit 89, the standby time calculation unit 92, the determination unit 94, and the determination unit 96, or the calculated result is stored in the memory 51 each time. Is remembered in.

Further, in the storage device 80, FCV information such as the pressure, temperature, and volume of the fuel tank 202 mounted on the FCV vehicle 200, the remaining amount of hydrogen fuel corresponding to the FCV information, and the fuel tank 202 are stored. A conversion table 81 showing the correlation with the filling information such as the final pressure to be filled and the final temperature is stored in the. Further, in the storage device 80, a correction table 83 for correcting the result obtained from the conversion table 81 is stored.

Further, when a plurality of FCV vehicles 200 arrive in the storage device 90, a plurality of tanks 202a and 202b (first and second hydrogen storage containers) are filled with hydrogen fuel in parallel. The program information of the filling flows (1), (2), and (3) is stored.

FIG. 3 is a diagram showing an example of a time chart of the pressure of each accumulator of the multi-stage accumulator, the pressure of the preliminary accumulator, and the fuel tank pressure of the FCV vehicle according to the first embodiment. First, with reference to FIG. 3, for example, a filling method when one FCV vehicle 200a arrives at the hydrogen station 102 and differential pressure filling of hydrogen fuel is performed using the multi-stage accumulator 101 will be described. In FIG. 3, the vertical axis represents pressure and the horizontal axis represents time. The accumulators 10, 12, 14 and the preliminary accumulator 19 of the multi-stage accumulator 101 are accumulating at the same pressure P0. On the other hand, the fuel tank 202 of the FCV vehicle 200a that has arrived at the hydrogen station 102 has a pressure P1. A case where filling of the fuel tank 202a of the FCV vehicle 200a is started from such a state will be described.

First, the fuel tank 202a is started to be filled from the accumulator 10 which is a low-pressure bank. When filling, a flow sensor (not shown) is used to fill at a constant speed. The hydrogen fuel accumulated in the accumulator 10 due to the differential pressure between the accumulator 10 and the fuel tank 202a moves toward the fuel tank 202a, and the pressure in the fuel tank 202a gradually increases as shown by the dotted line A. .. Along with this, the pressure of the accumulator 10 (graph shown by "low") gradually decreases. Then, when the time T1 elapses from the start of filling when the differential pressure between the accumulator 10 and the fuel tank 202a reaches a predetermined value, the accumulator used for the accumulator 12 serving as the medium pressure bank is switched from the accumulator 10. Be done. As a result, the differential pressure between the accumulator 12 and the fuel tank 202a becomes large, so that the state in which the filling speed is high can be maintained. Then, the hydrogen fuel accumulated in the accumulator 12 due to the differential pressure between the accumulator 12 and the fuel tank 202a moves to the fuel tank 202a side, and the pressure in the fuel tank 202a gradually increases further as shown by the dotted line A. I will do it. Along with this, the pressure of the accumulator 12 (graph indicated by "medium") gradually decreases. Then, when the time T2 elapses from the start of filling when the differential pressure between the accumulator 12 and the fuel tank 202a reaches a predetermined value, the accumulator used for the accumulator 14 serving as the high pressure bank is switched from the accumulator 12. .. As a result, the differential pressure between the accumulator 14 and the fuel tank 202a becomes large, so that a state in which the filling speed is high can be maintained. Then, the hydrogen fuel accumulated in the accumulator 14 due to the differential pressure between the accumulator 14 and the fuel tank 202a moves toward the fuel tank 202a, and the pressure in the fuel tank 202a gradually increases as shown by the dotted line A. I will do it. Along with this, the pressure of the accumulator 14 (graph indicated by "high") gradually decreases. Then, the pressure accumulator 14 serving as a high-pressure bank fills the fuel tank 202a until the pressure reaches the calculated final pressure PF (for example, 65 to 81 MPa) described later.

Next, the system control unit 58 reads the control data of the filling flow plan from the storage device 82, and controls the pressure recovery control unit 61 and the supply control unit 63 according to the control data. Specifically, the system control unit 58 controls the valve control unit 60, the compressor control unit 62, the dispenser control unit 64, and the valve control unit 65. The valve control unit 60 outputs control signals to the valves 21, 23, 25, 27 and the valves 322, 324, 326, 328 via the communication control circuit 50, and controls the opening and closing of each valve. The dispenser control unit 64 communicates with the dispenser 30a via the communication control circuit 50 and controls the operations of the dispensers 30a and 30b. The valve control unit 65 outputs a control signal to the valves 22a, 22b, 24a, 24b, 26a, 26b, 28a, 28b via the communication control circuit 50, and controls the opening and closing of each valve.

According to the example of FIG. 3, the valve control unit 60 controls the valves 21, 23, 25, and 27 in a closed state. The valve control unit 65 opens the valve 22a from the state where the valves 22a, 22b, 24a, 24b, 26a, 26b, 28a, 28b are closed. As a result, the atmosphere in the pipe between the accumulator 10 serving as a low-pressure bank and the dispenser 30a is connected. Then, the dispenser 30a is controlled by the dispenser control unit 64, and the hydrogen fuel accumulated in the accumulator 10 is started to be filled in the fuel tank 202a of the FCV vehicle 200a. When the time T1 elapses from the start of filling, the valve control unit 65 closes the valve 22a and opens the valve 24a instead. As a result, the atmosphere in the pipe between the accumulator 12 serving as the medium pressure bank and the dispenser 30a is connected. Then, the hydrogen fuel accumulated in the accumulator 12 is started to be filled in the fuel tank 202a of the FCV vehicle 200a by the dispenser 30a controlled by the dispenser control unit 64. When the time T2 has elapsed from the start of filling, the valve control unit 65 closes the valve 24a and opens the valve 26a instead. As a result, the atmosphere in the pipe between the accumulator 14 serving as the high-pressure bank and the dispenser 30a is connected. Then, the hydrogen fuel accumulated in the accumulator 14 is started to be filled in the fuel tank 202a of the FCV vehicle 200a by the dispenser 30a controlled by the dispenser control unit 64. The system control unit 58 monitors the pressure of the fuel tank 202a received by the receiving unit 52, and completes the filling when the pressure of the fuel tank 202a reaches the final pressure PF. The valve control unit 65 and the dispenser Controls the control unit 64. Along with this, the dispenser control unit 64 stops the supply of hydrogen fuel by the dispenser 30a, and the valve control unit 65 closes the valve 26a.

As described above, the filling (supply) of hydrogen fuel into the fuel tank 202a of the FCV vehicle 200a is completed, the nozzle of the dispenser 30a is removed from the receiving port (receptacle) of the fuel tank 202a of the FCV vehicle 200a, and the user can adjust the filling amount, for example. You will be leaving the hydrogen station 102 for a corresponding fee.

On the other hand, due to such filling, the hydrogen fuel in each accumulator 10, 12, 14 is reduced, and the pressure is lowered. Therefore, the bank pressure receiving unit 66 receives the pressure of the accumulators 10, 12, 14, and 19 from the pressure gauges 11, 13, 15, and 17 at all times or at a predetermined sampling cycle via the communication control circuit 50. Then, it is stored in the storage device 84.

Then, since the pressure in each accumulator 10, 12, 14 is reduced by filling the fuel tank 202a of the FCV vehicle 200a, the recompression mechanism 104 recompresses each accumulator 10, 12, 14. The compressor 40, valves 21, 23, 25, 27, valves 322, 324, 326, 328 and the like constitute the pressure recovery mechanism 104. First, the system control unit 58 selects a hydrogen fuel supply source to be connected to the suction side of the compressor 40 from the cadre 302, the intermediate accumulator 304, the hydrogen trailer 306, or the hydrogen production device 308. Then, the pressure recovery control unit 61 controls the pressure recovery mechanism 104 under the control of the system control unit 58 to restore pressure to the pressure accumulators 10, 12, 14, (and the reserve pressure accumulator 19). Specifically, first, the valve control unit 60 of the hydrogen fuel selected from the curdle 302, the intermediate accumulator 304, the hydrogen trailer 306, or the hydrogen production device 308 under the control of the system control unit 58. One valve (valve 322, 324, 326, or 328) as a supply source is controlled from a closed state to an open state. As a result, low-pressure hydrogen fuel is supplied to the suction side of the compressor 40.

The accumulator used to fill the fuel tank 202a of the FCV vehicle 200a is switched in the order of the low pressure bank, the medium pressure bank, and the high pressure bank. Therefore, first, the accumulator 10 serving as the low pressure bank is decompressed. The valve control unit 60 opens the valve 21 after the valves 21, 23, 25, and 27 are closed. At that time, the valves 22a and 22b are preferably in a closed state (a state in which the accumulator 10 is not used for filling the fuel tank 202a of the FCV vehicle 200a), but are in an open state (the accumulator 10 is used in the FCV vehicle 200a). It may be in the state of being used for filling the fuel tank 202a).

Then, the compressor control unit 62 drives the compressor 40 to deliver low-pressure (for example, 0.6 MPa) hydrogen fuel while compressing it, and the pressure of the accumulator 10 becomes a predetermined pressure P0 (for example, 82 MPa). The accumulator 10 is recompressed by filling the accumulator 10 with hydrogen fuel.

Next, the valve control unit 60 closes the valve 21 and opens the valve 23 instead. At that time, the valves 24a and 24b are preferably in a closed state (a state in which the accumulator 12 is not used for filling the fuel tank 202a of the FCV vehicle 200a), but are in an open state (the accumulator 12 is in the FCV vehicle 200a). It may be in the state of being used for filling the fuel tank 202a).

Then, the compressor control unit 62 drives the compressor 40 to deliver low-pressure (for example, 0.6 MPa) hydrogen fuel while compressing it, and the pressure of the accumulator 12 becomes a predetermined pressure P0 (for example, 82 MPa). The accumulator 12 is recompressed by filling the accumulator 12 with hydrogen fuel.

Next, the valve control unit 60 closes the valve 23 and opens the valve 25 instead. At that time, the valves 26a and 26b are preferably in a closed state (a state in which the accumulator 14 is not used for filling the fuel tank 202a of the FCV vehicle 200a), but are in an open state (the accumulator 14 is used in the FCV vehicle 200a). It may be in the state of being used for filling the fuel tank 202a).

Then, the compressor control unit 62 drives the compressor 40 to deliver low-pressure (for example, 0.6 MPa) hydrogen fuel while compressing it, and the pressure of the accumulator 14 becomes a predetermined pressure P0 (for example, 82 MPa). The accumulator 14 is decompressed by filling the accumulator 14 with hydrogen fuel.

Regarding the preliminary accumulator 19 which does not need to be used if only one FCV vehicle 200a is filled with hydrogen fuel, if the hydrogen fuel is reduced by filling, the other accumulator 10 , 12 and 14, the pressure is restored until a predetermined pressure P0 (for example, 82 MPa) is reached. In such a case, the valve control unit 60 closes the valve 25 and opens the valve 27 instead. At that time, the valves 28a and 28b are preferably in a closed state (a state in which the reserve accumulator 19 is not used for filling the fuel tank 202a of the FCV vehicle 200a), but are in an open state (the reserve accumulator 19). It may be in a state of being used for filling the fuel tank 202a or the like of the FCV vehicle 200a).

Then, the compressor control unit 62 drives the compressor 40 to deliver low-pressure (for example, 0.6 MPa) hydrogen fuel while compressing it, and the pressure of the preliminary accumulator 19 becomes a predetermined pressure P0 (for example, 82 MPa). The preliminary accumulator 19 is recompressed by filling the preliminary accumulator 19 with hydrogen fuel until it becomes.

As described above, even if the next FCV vehicle 200b arrives at the hydrogen station 102, hydrogen fuel can be similarly supplied. It takes several minutes (for example, 3 to 5 minutes) to fill the FCV vehicle 200a described above, several minutes (for example, 7 to 10 minutes) to repressurize the multi-stage accumulator 101, and a series of cycles from filling to completion of recompression is performed. For example, it is performed in about 10 to 15 minutes (for example, 12 minutes). Therefore, even if the FCV vehicle 200a arrives at the hydrogen station 102 at a pace of 4 to 6 vehicles (for example, a pace of 5 vehicles) per hour, the FCV vehicles 200a and 200b can be charged with hydrogen by the same cycle without waiting for filling. Can be supplied with fuel. However, as described above, if the user vehicles arriving at one hydrogen station 102 for filling are concentrated, the time required for filling including the waiting time becomes long. Here, when the filling of the next FCV vehicle 200b is started after waiting for the completion of the depressurization of the multi-stage accumulator 101, the decompression time is taken as a waiting time as it is. Therefore, in the first embodiment, in addition to the dispenser 30a, a second dispenser 30b is further arranged to form a double dispenser configuration. Then, using such a double dispenser, the two FCV vehicles 200a and 200b are configured to be able to receive hydrogen fuel filling in parallel. Usually, the user often arrives at the hydrogen station 102 before the remaining amount of the fuel tank 202 (202b) of the FCV vehicle 200a (200b) falls below about 30% when the tank is full so as not to run out of fuel. .. However, it is assumed that the hydrogen fuel itself or the pressure for differential pressure filling may be insufficient to fill the two FCV vehicles 200a and 200b in parallel with only the conventional multi-stage accumulator 101 for one vehicle. NS. Therefore, in the first embodiment, instead of preparing two multi-stage accumulators 101, a number of preliminary accumulators 19 is added, which is smaller than the number of accumulators 10, 12, and 14 constituting the multi-stage accumulator 101. Then, using the set of the multi-stage accumulator 101 and the preliminary accumulator 19, the two FCV vehicles 200a and 200b are configured to be able to receive hydrogen fuel in parallel. Hereinafter, a specific description will be given.

FIG. 4 is a flowchart showing a part of the main steps of the hydrogen fuel supply method according to the first embodiment. In FIG. 4, the hydrogen fuel supply method according to the first embodiment is the FCV information (A) receiving step (S102), the filling flow calculation step (S104), the A filling step (S106), and the FCV information (B). A series of steps of a receiving step (S108), a pressure comparison step (S110), and a flow selection step (S112) are carried out.

When the filling flow in the case of pressure P _a ≈ pressure P _b is selected by the flow selection step (S112), the filling flow calculation step (S121) and A and B are further followed by the flow selection step (S112). A series of steps including a low pressure bank filling step (S122), an A and B medium pressure bank filling step (S124), an A and B high pressure bank filling step (S126), and an A and B preliminary bank filling step (S128). To carry out.

FIG. 5 is a flowchart showing another part of the main steps of the hydrogen fuel supply method according to the first embodiment. When the filling flow in the case of pressure P _a <pressure P _b is selected by the flow selection step (S112), following the flow selection step (S112), further, as shown in FIG. 5, the standby time calculation step (S202). , Judgment step (S204), judgment step (S206), filling flow calculation step (S210), B low pressure bank filling step (filling start) (S211), B medium pressure bank filling step (S212), A series of steps of B high pressure bank filling step (S214), A medium pressure bank filling step (S220), A high pressure bank filling step (S222), and A preliminary bank filling step (S224) are carried out. Although the B low-pressure bank filling step (filling start) (S211) is used, the filling may be started from the B medium-pressure bank filling step (S212).

FIG. 6 is a flowchart showing another part of the main steps of the hydrogen fuel supply method according to the first embodiment. When the filling flow in the case of pressure P _a > pressure P _b is selected by the flow selection step (S112), following the flow selection step (S112), further, as shown in FIG. 6, the filling flow calculation step (S230) A medium pressure bank filling step (S231), A high pressure bank filling step (S232), B low pressure bank filling step (S240), B medium pressure bank filling step (S242), and B high pressure bank filling step (S242). A series of steps of S244) and B preliminary bank filling step (S246) are carried out.

As an FCV information (A) receiving step (S102), the receiving unit 52 uses a vehicle-mounted device 204a (first vehicle-mounted device) mounted on an FCV vehicle 200a (first fuel cell vehicle (FCV)) powered by hydrogen fuel. The FCV information (A) (first information) including pressure information regarding the fuel tank 202a (first hydrogen storage container) mounted on the FCV vehicle 200a is received from the vessel). Specifically, it operates as follows. When the first FCV vehicle 200a arrives in the hydrogen station 102 and the nozzle of the dispenser 30a is fixed to the receiving port (receptacle) of the fuel tank 202a of the FCV vehicle 200a by the user or the worker of the hydrogen station 102, the on-board unit is installed. Communication between the 204a and the repeater 34a is established. When communication is established, FCV information such as the current pressure and temperature of the fuel tank 202a and the volume of the fuel tank 202a is output (transmitted) from the on-board unit 204a to the control circuit 100 via the repeater 34a in real time. Will be done.

In the control circuit 100, the receiving unit 52 receives FCV information via the communication control circuit 50. FCV information is monitored at all times or at predetermined sampling intervals while communication between the on-board unit 204a and the repeater 34a is established. The received FCV information is stored in the storage device 82 together with the reception time information. In addition, the outside air temperature is also measured by a measuring instrument (not shown).

As the filling flow calculation step (S104), first, the end pressure / temperature calculation unit 54 reads out the conversion table 81 from the storage device 80, and the pressure, temperature, and volume of the received fuel tank 202a at the initial stage of reception. , And the final pressure PF corresponding to the outside air temperature and the final temperature are calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. If there is a large error in the obtained results using only the data in the conversion table 81, the correction table 83 may be provided based on the results obtained by experiments, simulations, or the like.

Next, the flow planning unit 56 creates a filling flow plan for supplying (filling) hydrogen fuel to the fuel tank 202a of the FCV vehicle 200a by using the multi-stage accumulator 101. As described in FIG. 3, the flow planning unit 56 selects the accumulator (selection of accumulators 10, 12, 14) and the multi-stage accumulator 101 so that the calculated pressure of the fuel tank 202 becomes the final pressure PF. Create a filling flow plan that includes the switching timing of. In this way, the time t from the start of filling to reach the final pressure PF is obtained. The control data of the filling flow plan created in such a case is temporarily stored in the storage device 82. In the above-mentioned example, the case where the pressure P1 of the fuel tank 202a of the FCV vehicle 200a arriving at the hydrogen station 102 is sufficiently lower than the lower limit pressure of the accumulator 10 which is a preset low-pressure bank is shown. ing. As an example, a sufficiently low state such as 1/2 or less when the tank is full is shown. In such a case, in order to rapidly fill the final pressure PF with the pressure of the fuel tank 202a of the FCV vehicle 200a, for example, three accumulators 10, 12, and 14 are required. However, the FCV vehicle 200a arriving at the hydrogen station 102 is not limited to the case where the pressure of the fuel tank 202a is sufficiently low. When the pressure of the fuel tank 202a is higher than, for example, 1/2 when the tank is full, for example, two accumulators 10 and 12 may be sufficient. Further, when the pressure of the fuel tank 202a is high, for example, one accumulator 10 may be sufficient. In any case, the accumulators used are switched in the order of accumulators 10, 12, and 14.

As the A filling step (S106), the supply unit 106 fills the fuel tank 202a with hydrogen fuel (starts filling) from the multi-stage accumulator 101 using the dispenser 30a. The supply unit 106 is composed of, for example, a multi-stage accumulator 101, a preliminary accumulator 19, valves 22a, 22b, 24a, 24b, 26a, 26b, 28a, 28b, and dispensers 30a, 30b related to the filling operation. Specifically, it operates as follows. The system control unit 58 reads the control data of the filling flow plan from the storage device 82, and controls the supply control unit 63 according to the control data. The supply control unit 63 controls the supply unit 106 under the control of the system control unit 58 to supply hydrogen fuel to the fuel tank 202a of the FCV vehicle 200a. Specifically, the system control unit 58 controls the dispenser control unit 64 and the valve control unit 65. The dispenser control unit 64 communicates with the dispenser 30a via the communication control circuit 50 and controls the operation of the dispenser 30a. The valve control unit 65 outputs a control signal to the valves 22a, 22b, 24a, 24b, 26a, 26b, 28a, 28b via the communication control circuit 50, and controls the opening and closing of each valve.

As an FCV information (B) receiving step (S108), the receiving unit 52 uses a hydrogen fuel-powered FCV vehicle 200b (second fuel cell vehicle (FCV)) that arrives at the hydrogen station 102 after the FCV vehicle 200a. Receives FCV information (second information) including pressure information regarding the fuel tank 202b (second hydrogen storage container) mounted on the FCV vehicle 200b from the vehicle-mounted device 204b (second vehicle-mounted device) mounted on the vehicle. .. Specifically, hydrogen fuel to the fuel tank 202a (first hydrogen storage container) after the start of receiving the FCV information (first information) of the FCV vehicle 200a in the FCV information (A) receiving step (S102). FCV information (second information) of the FCV vehicle 200b is received before the filling of the FCV vehicle 200b is completed. When the second FCV vehicle 200b arrives in the hydrogen station 102 and the nozzle of the dispenser 30b is fixed to the receiving port (receptacle) of the fuel tank 202b of the FCV vehicle 200b by the user or the worker of the hydrogen station 102, the on-board unit is installed. Communication between the 204b and the repeater 34b is established. When communication is established, FCV information such as the current pressure and temperature of the fuel tank 202b and the volume of the fuel tank 202b is output (transmitted) from the on-board unit 204b to the control circuit 100 in real time via the repeater 34b. Will be done.

In the control circuit 100, the receiving unit 52 receives the FCV information of the FCV vehicle 200b via the communication control circuit 50. The FCV information of the FCV vehicle 200b is monitored at all times or at predetermined sampling intervals while the communication between the on-board unit 204a and the repeater 34a is established. The received FCV information of the FCV vehicle 200b is stored in the storage device 82 together with the information of the reception time. In addition, the outside air temperature is also measured by a measuring instrument (not shown).

As a pressure comparison step (S110), the comparison unit 88 determines the pressure of the fuel tank 202a of the first FCV vehicle 200a and the pressure of the second FCV vehicle 200b at the time when the FCV information of the second FCV vehicle 200b is received. Compare with the pressure of the fuel tank 202b.

As a flow selection step (S112), when the selection unit 89 receives the FCV information of the second FCV vehicle 200b from the set of the multi-stage accumulator 101 and the preliminary accumulator 19 using the two dispensers 30a and 30b. The filling flow corresponding to the comparison result is selected from a plurality of filling flows when hydrogen fuel is filled in parallel to the two fuel tanks 202a and 202b described below. Here, as a result of comparing the pressure of the fuel tank 202a and the pressure of the fuel tank 202b at the time when the FCV information of the second FCV vehicle 200b is received, the pressure of the fuel tank 202a and the pressure of the fuel tank 202b are One option is when the difference is smaller than the threshold. In other words, the pressure of the fuel tank 202a and the pressure of the fuel tank 202b are about the same (Pa≈Pb). This applies when the differential pressure is, for example, smaller than ± 5 MPa. In such a case, the flow (1) is selected.

Further, as a result of comparing the pressure of the fuel tank 202a and the pressure of the fuel tank 202b at the time when the FCV information of the second FCV vehicle 200b is received, the pressure of the fuel tank 202a is smaller than the pressure of the fuel tank 202b. The case (Pa <Pb) is mentioned as another option. In such a case, flow (2) is selected.

Further, as a result of comparing the pressure of the fuel tank 202a and the pressure of the fuel tank 202b at the time when the FCV information of the second FCV vehicle 200b is received, the pressure of the fuel tank 202a is larger than the pressure of the fuel tank 202b. The case (Pa> Pb) is mentioned as another option. In such a case, flow (3) is selected.

When Pa≈Pb, a plurality of accumulators in a set of the multi-stage accumulator 101 and the pre-accumulator 19 have been accumulated since the time when the FCV information of the second FCV vehicle 200b was received (when the flow (1) was selected). The fuel tank 202a of the first FCV vehicle 200a is filled with the dispenser 30a while switching the accumulator used in the vessels 10, 12, 14, and 19 at the same timing, and the dispenser 30b is used in parallel. The fuel tank 202b of the second FCV vehicle 200b is filled. Hereinafter, a specific description will be given.

As the filling flow calculation step (S121), the end pressure / temperature calculation unit 54 reads the conversion table 81 from the storage device 80, and when the FCV information of the second FCV vehicle 200b is received (flow (1) is selected. The final pressure PF and final temperature corresponding to the pressure and temperature of the fuel tank 202a, the volume of the fuel tank 202a, and the outside air temperature at the time point) are calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. Similarly, the final pressure PF corresponding to the pressure, temperature, and volume of the fuel tank 202b at the time when the FCV information of the second FCV vehicle 200b is received (when the flow (1) is selected). And the final temperature is calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. If there is a large error in the obtained results using only the data in the conversion table 81, the correction table 83 may be provided based on the results obtained by experiments, simulations, or the like.

Next, the flow planning unit 56 reads the control data of the flow (1) from the storage device 90, and uses the set of the multi-stage accumulator 101 and the preliminary accumulator 19 along the flow (1) to use the FCV vehicle. A filling flow plan for differentially supplying (filling) hydrogen fuel to the fuel tank 202a of the 200a and the fuel tank 202b of the FCV vehicle 200b is created. As described in FIG. 3, the flow planning unit 56 selects the accumulator (selection of accumulators 10, 12, 14, 19) so that the calculated pressure of the fuel tanks 202a and 202b becomes the final pressure PF. A filling flow plan including the switching timing of the multi-stage accumulator 101 and the preliminary accumulator 19 is created. The control data of the filling flow plan created in such a case is temporarily stored in the storage device 82. Further, the accumulator is switched in the order of accumulators 10, 12, 14, and 19.

When the FCV information of the second FCV vehicle 200b is received (when the flow (1) is selected), the fuel tank 202a of the first FCV vehicle 200a is still filled with hydrogen fuel in the low pressure bank. When the accumulator 10 is being used, it is carried out from the A and B low pressure bank filling step (S122). When the FCV information of the second FCV vehicle 200b is received (when the flow (1) is selected), the fuel tank 202a of the first FCV vehicle 200a is already filled with hydrogen fuel as a low-pressure bank. When the accumulator 10 is switched to the accumulator 12 which is a medium pressure bank, the A and B low pressure bank filling steps (S122) are unnecessary, and the A and B medium pressure bank filling steps (S124) are performed. Further, when the FCV information of the second FCV vehicle 200b is received (when the flow (1) is selected), the fuel tank 202a of the first FCV vehicle 200a is already filled with hydrogen fuel. When the accumulator 12 serving as a pressure bank is switched to the accumulator 14 serving as a high pressure bank, the A and B medium pressure bank filling step (S124) becomes unnecessary, and the A and B high pressure bank filling step (S126) is performed. do. Hereinafter, when the FCV information of the second FCV vehicle 200b is received (when the flow (1) is selected), the fuel tank 202a of the first FCV vehicle 200a is still filled with hydrogen fuel in the low pressure bank. The case where the accumulator 10 is used will be described as an example.

The system control unit 58 reads out the control data of the filling flow plan planned along the flow (1), and controls the supply control unit 63 according to the control data. The supply control unit 63 controls the supply unit 106 under the control of the system control unit 58 to supply hydrogen fuel to the fuel tank 202a of the FCV vehicle 200a and to supply hydrogen fuel to the fuel tank 202b of the FCV vehicle 200b. Supply. Furthermore, the system control unit 58 controls the dispenser control unit 64 and the valve control unit 65. The dispenser control unit 64 communicates with the dispensers 30a and 30b via the communication control circuit 50 and controls the operation of the dispensers 30a and 30b. The valve control unit 65 outputs a control signal to the valves 22a, 22b, 24a, 24b, 26a, 26b, 28a, 28b via the communication control circuit 50, and controls the opening and closing of each valve.

As the A and B low pressure bank filling step (S122), the supply unit 106 continues to fill the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel from the accumulator 10 as it is, while continuing to fill the fuel tank 202a with the second FCV. After the time when the FCV information of the vehicle 200b is received (the time when the flow (1) is selected), the fuel tank 202b of the second FCV vehicle 200b is further filled from the accumulator 10 by using the dispenser 30b.

In the A and B medium pressure bank filling step (S124), in the supply unit 106, when the accumulator 10 reaches a predetermined lower limit of use pressure (or, the differential pressure between the accumulator 10 and the fuel tanks 202a and 202b is greater than the threshold value. (When it becomes smaller), the accumulators that supply hydrogen fuel to the two dispensers 30a and 30b are simultaneously switched from the accumulator 10 that serves as a low-pressure bank to the accumulator 12 that serves as a medium-pressure bank. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 12 to the fuel tank 202a of the first FCV vehicle 200a using the dispenser 30a, and fuels the second FCV vehicle 200b using the dispenser 30b. Hydrogen fuel is supplied from the accumulator 12 to the tank 202b. When the FCV information of the second FCV vehicle 200b is received (when the flow (1) is selected), the fuel tank 202a of the first FCV vehicle 200a is already filled with hydrogen fuel as a medium pressure bank. When the accumulator 12 is being used, the supply unit 106 continues to fill the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel from the accumulator 12, while continuing to fill the fuel tank 202a with the second FCV vehicle. After the time when the FCV information of the FCV vehicle 200b is received (the time when the flow (1) is selected), the fuel tank 202b of the second FCV vehicle 200b is further filled from the accumulator 12 by using the dispenser 30b.

In the A and B high-voltage bank filling steps (S126), in the supply unit 106, when the accumulator 12 reaches a predetermined lower limit of use pressure (or, the differential pressure between the accumulator 12 and the fuel tanks 202a and 202b is smaller than the threshold value). At that time, the accumulator that supplies hydrogen fuel to the two dispensers 30a and 30b is simultaneously switched from the accumulator 12 that is the medium pressure bank to the accumulator 14 that is the high pressure bank. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 14 to the fuel tank 202a of the first FCV vehicle 200a using the dispenser 30a, and fuels the second FCV vehicle 200b using the dispenser 30b. Hydrogen fuel is supplied from the accumulator 14 to the tank 202b. When the FCV information of the second FCV vehicle 200b is received (when the flow (1) is selected), the fuel tank 202a of the first FCV vehicle 200a is already filled with hydrogen fuel to form a high-pressure bank. When the accumulator 14 is being used, the supply unit 106 continues to fill the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel from the accumulator 14, while continuing to fill the fuel tank 202a with the second FCV vehicle. After the time when the FCV information of the FCV vehicle 200b is received (the time when the flow (1) is selected), the fuel tank 202b of the second FCV vehicle 200b is further filled from the accumulator 14 using the dispenser 30b.

Here, since the multi-stage accumulator 101 composed of accumulators 10, 12, and 14 originally assumes hydrogen filling for one FCV vehicle, if two units are filled at the same time, the hydrogen fuel itself. Alternatively, it is assumed that the pressure for performing differential pressure filling is insufficient. The final pressure to be filled in the fuel tank 202a of the first FCV vehicle 200a and the final pressure to be filled in the fuel tank 202b of the second FCV vehicle 200b are pressure, temperature and tank volume. There are cases where the two FCV vehicles do not match due to the above relationship. Therefore, even when the accumulator is switched to two FCV vehicles at the same time, the filling is not always completed at the same time. Therefore, if at least one of the two FCV vehicles 200a and 200b that has not been filled by the end of the A and B high-voltage bank filling step (S126) exists, the next A and B spare bank filling is performed. Proceed to the step (S128).

In the A and B spare bank filling steps (S128), in the supply unit 106, when the accumulator 14 reaches a predetermined lower limit of use pressure (or the differential pressure between the accumulator 14 and the fuel tanks 202a and 202b is smaller than the threshold value). At that time, the accumulators that supply hydrogen fuel to the two dispensers 30a and 30b are simultaneously switched from the accumulator 14 that serves as a high-pressure bank to the reserve accumulator 19 that serves as a spare bank. Then, the supply unit 106 supplies hydrogen fuel from the preliminary accumulator 19 to the fuel tank 202a of the first FCV vehicle 200a using the dispenser 30a, and uses the dispenser 30b to supply hydrogen fuel to the second FCV vehicle 200b. Hydrogen fuel is supplied from the preliminary accumulator 19 to the fuel tank 202b. Alternatively, when the accumulator 14 reaches a predetermined lower limit of use pressure (or when the differential pressure between the accumulator 14 and the fuel tank that has not been filled yet becomes smaller than the threshold value), the filling is still performed. Only the one that has not completed is switched to the preliminary accumulator 19. Then, the supply unit 106 supplies hydrogen fuel from the preliminary accumulator 19 to the fuel tanks 202a and 202b which have not been filled yet by using the corresponding dispensers 30a or 30b.

As described above, the filling of the two FCV vehicles 200a and 200b with hydrogen fuel is completed.

Next, when Pa <Pb, the pressure of the fuel tank 202a is the same as the pressure of the fuel tank 202b after the time when the FCV information of the second FCV vehicle 200b is received (the time when the flow (2) is selected). When the time until the fuel tank 202a is within a predetermined time, the fuel tank 202a is used with the dispenser 30a while waiting for the fuel tank 202b to be filled until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b. Filling. Then, after the pressure in the fuel tank 202a becomes the same as the pressure in the fuel tank 202b, the accumulators used in the plurality of accumulators in the set of the multi-stage accumulator 101 and the preliminary accumulator 19 are switched at the same timing. The fuel tank 202a is filled with the dispenser 30a, and the fuel tank 202b is filled with the dispenser 30b in parallel.

On the other hand, the time from the time when the FCV information of the second FCV vehicle 200b is received (the time when the flow (2) is selected) until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b is predetermined. If the time is not within the above time, the fuel tank 202b is not waited for filling after the time when the FCV information of the second FCV vehicle 200b is received (the time when the flow (2) is selected). Then, the fuel tank 202a is filled with the dispenser 30a while independently switching the accumulators used in the plurality of accumulators 10, 12, 14, 19 in the set of the multi-stage accumulator 101 and the preliminary accumulator 19. Then, in parallel, the accumulator used in the plurality of accumulators 10, 12, 14, 19 in the set of the multi-stage accumulator 101 and the preliminary accumulator 19 is independent of switching for filling the fuel tank 202a. The fuel tank 202b is filled with the dispenser 30b while switching to. Hereinafter, a specific description will be given.

In the standby time calculation step (S202), after the standby time calculation unit 92 receives the FCV information of the second FCV vehicle 200b (when the flow (2) is selected), the pressure in the fuel tank 202a is fueled. The time until it becomes the same as the pressure of the tank 202b is calculated. Since the filling flow plan of the first FCV vehicle 200a has already been calculated in the filling flow calculation step (S104), if the pressure of the fuel tank 202b is known, the filling flow plan is referred to and the second FCV is calculated. The time from when the FCV information of the vehicle 200b is received (when the flow (2) is selected) until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b can be calculated.

In the determination step (S204), the determination unit 94 changes the pressure of the fuel tank 202a to the pressure of the fuel tank 202b after receiving the FCV information of the second FCV vehicle 200b (when the flow (2) is selected). It is determined whether or not the time until it becomes the same as is within the predetermined time tth. For example, it is determined whether or not the pressure of the fuel tank 202a is filled to the same level as the pressure of the fuel tank 202b within 30 seconds. If the time until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b is within the predetermined time tth, the process proceeds to the determination step (S206). If the time until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b exceeds the predetermined time tth, the process proceeds to the filling flow calculation step (S210). It is easier for control to switch the accumulator used in a plurality of accumulators in the set of the multi-stage accumulator 101 and the pre-accumulator 19 at the same timing for filling the fuel tank 202a and filling the fuel tank 202b. Is. Therefore, even if the waiting time of the second FCV vehicle 200b occurs to some extent, the filling of the fuel tank 202a and the filling of the fuel tank 202b are switched at the same timing. However, when the waiting time of the second FCV vehicle 200b becomes long, the second FCV vehicle 200b is switched independently even if it is complicated in terms of control. As a result, the time required for hydrogen filling of the second FCV vehicle 200b can be shortened.

In the determination step (S206), the determination unit 96 determines whether or not the pressure in the fuel tank 202a becomes the same as the pressure in the fuel tank 202b. If the pressure is not the same yet, the process returns to the determination step (S206), and the same determination is repeated until the pressure becomes the same. Needless to say, the fuel tank 202a is continuously filled from the accumulator 10 during the determination operation. As a result, the filling of the fuel tank 202b is waited until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b. Then, when the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b, the process proceeds to the filling flow calculation step (S121), and thereafter, when Pa≈Pb (when the flow (1) is selected). Perform the same operation as.

When the FCV information of the second FCV vehicle 200b is received (when the flow (2) is selected), the fuel tank 202a of the first FCV vehicle 200a is still filled with hydrogen fuel in the low pressure bank. When the accumulator 10 is being used, the points to be carried out from the A and B low-pressure bank filling steps (S122) are the same as in the above-mentioned case. When the FCV information of the second FCV vehicle 200b is received (when the flow (1) is selected), the fuel tank 202a of the first FCV vehicle 200a is already filled with hydrogen fuel as a low-pressure bank. When the accumulator 10 is switched to the accumulator 12 which is a medium pressure bank, the A and B low pressure bank filling steps (S122) are not required, and the A and B medium pressure bank filling steps (S124) are started. Is the same as in the above case. Further, when the FCV information of the second FCV vehicle 200b is received (when the flow (1) is selected), the fuel tank 202a of the first FCV vehicle 200a is already being filled with hydrogen fuel. When the accumulator 12 serving as a pressure bank is switched to the accumulator 14 serving as a high pressure bank, the A and B medium pressure bank filling step (S124) becomes unnecessary, and the A and B high pressure bank filling step (S126) is performed. The points to be performed are the same as in the above-mentioned case.

In the filling flow calculation step (S210), when the time until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b exceeds a predetermined time tth, the end pressure / temperature calculation unit 54 is transferred from the storage device 80. The pressure and temperature of the fuel tank 202a, the volume of the fuel tank 202a, and the outside air temperature at the time when the conversion table 81 is read out and the FCV information of the second FCV vehicle 200b is received (when the flow (2) is selected). The final pressure PF and the final temperature corresponding to are calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. Similarly, the final pressure PF corresponding to the pressure, temperature, and volume of the fuel tank 202b at the time when the FCV information of the second FCV vehicle 200b is received (when the flow (2) is selected). And the final temperature is calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. If there is a large error in the obtained results using only the data in the conversion table 81, the correction table 83 may be provided based on the results obtained by experiments, simulations, or the like.

Next, the flow planning unit 56 reads the control data of the flow (2) from the storage device 90, and uses the set of the multi-stage accumulator 101 and the preliminary accumulator 19 along the flow (2) to use the FCV vehicle. A filling flow plan for differentially supplying (filling) hydrogen fuel to the fuel tank 202a of the 200a and the fuel tank 202b of the FCV vehicle 200b is created. As described in FIG. 3, the flow planning unit 56 selects the accumulator (selection of accumulators 10, 12, 14, 19) so that the calculated pressure of the fuel tanks 202a and 202b becomes the final pressure PF. A filling flow plan including the switching timing of the multi-stage accumulator 101 and the preliminary accumulator 19 is created. The control data of the filling flow plan created in such a case is temporarily stored in the storage device 82. Further, the accumulator is switched in the order of accumulators 10, 12, 14, and 19.

The system control unit 58 reads out the control data of the filling flow plan planned along the flow (2), and controls the supply control unit 63 according to the control data. The supply control unit 63 controls the supply unit 106 under the control of the system control unit 58 to supply hydrogen fuel to the fuel tank 202a of the FCV vehicle 200a and to supply hydrogen fuel to the fuel tank 202b of the FCV vehicle 200b. Supply. Furthermore, the system control unit 58 controls the dispenser control unit 64 and the valve control unit 65. The dispenser control unit 64 communicates with the dispensers 30a and 30b via the communication control circuit 50 and controls the operation of the dispensers 30a and 30b. The valve control unit 65 outputs a control signal to the valves 22a, 22b, 24a, 24b, 26a, 26b, 28a, 28b via the communication control circuit 50, and controls the opening and closing of each valve.

When the FCV information of the second FCV vehicle 200b is received (when the flow (2) is selected), the fuel tank 202b of the second FCV vehicle 200b is filled with hydrogen fuel as a low-pressure bank. When the differential pressure can be sufficiently obtained even from the accumulator 10, the operation is carried out from the B low pressure bank filling step (filling start) (S211). When the pressure of the fuel tank 202b is high and higher than the lower limit of use of the low pressure bank, the B low pressure bank filling step (filling start) (S211) is omitted and the operation (filling) is started from the B medium pressure bank filling step (S212). Start.

In the B low-pressure bank filling step (filling start) (S211), the supply unit 106 continues to fill the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel from the accumulator 10, while continuing to fill the fuel tank 202a with the second unit. After the time when the FCV information of the FCV vehicle 200b is received (the time when the flow (2) is selected), the fuel tank 202b of the second FCV vehicle 200b is further filled from the accumulator 10 by using the dispenser 30b.

In the B medium pressure bank filling step (S212), the supply unit 106 is at a time when the accumulator 10 reaches a predetermined lower limit of use pressure (or when the differential pressure between the accumulator 10 and the fuel tank 202b becomes smaller than the threshold value). ), The accumulator that supplies hydrogen fuel to the dispenser 30b is changed from the accumulator 10 that is a low pressure bank to a medium pressure bank independently of the filling of the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel. Switch to the accumulator 12. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 12 to the fuel tank 202b of the second FCV vehicle 200b using the dispenser 30b.

In the high-pressure bank filling step (S214), the supply unit 106 reaches the time when the accumulator 12 reaches a predetermined lower limit of use pressure (or when the differential pressure between the accumulator 12 and the fuel tank 202b becomes smaller than the threshold value). If the filling of the fuel tank 202b is not completed by the filling from the accumulator 12, the hydrogen fuel is supplied to the dispenser 30b independently of the filling of the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel. The accumulator for supplying the fuel is switched from the accumulator 12 which is a medium pressure bank to the accumulator 14 which is a high pressure bank. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 14 to the fuel tank 202b of the second FCV vehicle 200b using the dispenser 30b.

As a result, the filling of the fuel tank 202b of the second FCV vehicle 200b with hydrogen fuel is completed.

On the other hand, in the first FCV vehicle 200a, the filling of the fuel tank 202a using the dispenser 30a is continued from the accumulator 10 after the filling work of the second FCV vehicle 200b is delayed.

As the A medium pressure bank filling step (S220), the supply unit 106 is at a time when the accumulator 10 reaches a predetermined lower limit of use pressure (or when the differential pressure between the accumulator 10 and the fuel tank 202a becomes smaller than the threshold value). ), The accumulator that supplies hydrogen fuel to the dispenser 30a is changed from the accumulator 10 that becomes a low pressure bank to the accumulator that becomes a medium pressure bank after the work of filling the fuel tank 202b of the second FCV vehicle 200b with hydrogen fuel. Switch to vessel 12. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 12 to the fuel tank 202a of the first FCV vehicle 200a using the dispenser 30a.

As the A high-pressure bank filling step (S222), the supply unit 106 reaches the time when the accumulator 12 reaches a predetermined lower limit of use pressure (or when the differential pressure between the accumulator 12 and the fuel tank 202a becomes smaller than the threshold value). Then, after the work of filling the fuel tank 202b of the second FCV vehicle 200b with hydrogen fuel, the accumulator for supplying hydrogen fuel to the dispenser 30a is changed from the accumulator 12 which is a medium pressure bank to the accumulator which becomes a high pressure bank. Switch to 14. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 14 to the fuel tank 202a of the first FCV vehicle 200a using the dispenser 30a.

Here, as described above, the multi-stage accumulator 101 composed of accumulators 10, 12, and 14 originally assumes hydrogen filling for one FCV vehicle. Since the filling of the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel is delayed from the filling of the fuel tank 202a of the second FCV vehicle 200b with hydrogen fuel, the accumulators 12 and 14 have already been filled. It is often after it has been used to fill the fuel tank 202a of the second FCV vehicle 200b with hydrogen fuel. Therefore, even if the accumulator 14 serving as a high-pressure bank is switched, the hydrogen fuel itself or the pressure for performing differential pressure filling is insufficient, and the fuel tank 202a of the first FCV vehicle 200a is filled with hydrogen fuel. It may not be completed. Therefore, if the filling of the hydrogen fuel into the fuel tank 202a is not completed at the time when the A high-pressure bank filling step (S222) is completed, the A preliminary bank filling step (S224) is carried out.

As the A spare bank filling step (S224), when the accumulator 14 reaches a predetermined lower limit pressure after the filling of hydrogen fuel into the fuel tank 202b of the second FCV vehicle 200b is completed, the supply unit 106 reaches a predetermined lower limit pressure. (Alternatively, when the differential pressure between the accumulator 14 and the fuel tank 202a becomes smaller than the threshold value), the accumulator that supplies hydrogen fuel to the dispenser 30a is changed from the accumulator 14 that becomes a high-pressure bank to a reserve accumulator that becomes a spare bank. Switch to 19. Then, the supply unit 106 supplies hydrogen fuel from the preliminary accumulator 19 to the fuel tank 202a of the first FCV vehicle 200a using the dispenser 30a.

As a result, the filling of the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel is completed.

Next, when Pa> Pb, after the time when the FCV information of the second FCV vehicle 200b is received (the time when the flow (3) is selected), the plurality of accumulators 10, 12, of the multi-stage accumulator 101, The fuel tank 202a is filled with the dispenser 30a while switching the accumulator used in 14. Then, in parallel, the accumulator used in the plurality of accumulators 10, 12, 14, 19 in the set of the multi-stage accumulator 101 and the preliminary accumulator 19 is independent of switching for filling the fuel tank 202a. The fuel tank 202b is filled with the dispenser 30b while switching to.

As the filling flow calculation step (S230), the end pressure / temperature calculation unit 54 reads the conversion table 81 from the storage device 80, and when the FCV information of the second FCV vehicle 200b is received (flow (3) is selected. The final pressure PF and final temperature corresponding to the pressure and temperature of the fuel tank 202a, the volume of the fuel tank 202a, and the outside air temperature at the time point) are calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. Similarly, the final pressure PF corresponding to the pressure, temperature, and volume of the fuel tank 202b at the time when the FCV information of the second FCV vehicle 200b is received (when the flow (3) is selected). And the final temperature is calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. If there is a large error in the obtained results using only the data in the conversion table 81, the correction table 83 may be provided based on the results obtained by experiments, simulations, or the like.

Next, the flow planning unit 56 reads the control data of the flow (3) from the storage device 90, and uses the set of the multi-stage accumulator 101 and the preliminary accumulator 19 along the flow (3) to use the FCV vehicle. A filling flow plan for differentially supplying (filling) hydrogen fuel to the fuel tank 202a of the 200a and the fuel tank 202b of the FCV vehicle 200b is created. As described in FIG. 3, the flow planning unit 56 selects the accumulator (selection of accumulators 10, 12, 14, 19) so that the calculated pressure of the fuel tanks 202a and 202b becomes the final pressure PF. A filling flow plan including the switching timing of the multi-stage accumulator 101 and the preliminary accumulator 19 is created. The control data of the filling flow plan created in such a case is temporarily stored in the storage device 82. Further, the accumulator is switched in the order of accumulators 10, 12, 14, and 19.

The system control unit 58 reads out the control data of the filling flow plan planned along the flow (3), and controls the supply control unit 63 according to the control data. The supply control unit 63 controls the supply unit 106 under the control of the system control unit 58 to supply hydrogen fuel to the fuel tank 202a of the FCV vehicle 200a and to supply hydrogen fuel to the fuel tank 202b of the FCV vehicle 200b. Supply. Furthermore, the system control unit 58 controls the dispenser control unit 64 and the valve control unit 65. The dispenser control unit 64 communicates with the dispensers 30a and 30b via the communication control circuit 50 and controls the operation of the dispensers 30a and 30b. The valve control unit 65 outputs a control signal to the valves 22a, 22b, 24a, 24b, 26a, 26b, 28a, 28b via the communication control circuit 50, and controls the opening and closing of each valve.

In the first FCV vehicle 200a, the fuel tank 202a is continuously filled from the accumulator 10 using the dispenser 30a prior to the filling work of the second FCV vehicle 200b.

As the A medium pressure bank filling step (S231), the supply unit 106 is at a time when the accumulator 10 reaches a predetermined lower limit of use pressure (or when the differential pressure between the accumulator 10 and the fuel tank 202a becomes smaller than the threshold value). ), The accumulator that supplies hydrogen fuel to the dispenser 30a is changed from the accumulator 10 that is a low pressure bank to a medium pressure bank independently of the filling of the fuel tank 202b of the second FCV vehicle 200b with hydrogen fuel. Switch to the accumulator 12. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 12 to the fuel tank 202a of the first FCV vehicle 200a using the dispenser 30a.

As the A high-pressure bank filling step (S232), the supply unit 106 reaches the time when the accumulator 12 reaches a predetermined lower limit of use pressure (or when the differential pressure between the accumulator 12 and the fuel tank 202a becomes smaller than the threshold value). Then, independently of filling the fuel tank 202b of the second FCV vehicle 200b with hydrogen fuel, the accumulator for supplying hydrogen fuel to the dispenser 30a is changed from the accumulator 12 which is a medium pressure bank to the accumulator which becomes a high pressure bank. Switch to vessel 14. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 14 to the fuel tank 202a of the first FCV vehicle 200a using the dispenser 30a.

As a result, the filling of the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel is completed.

In the B low-pressure bank filling step (S240), when the fuel tank 202a of the first FCV vehicle 200a is filled with hydrogen fuel from the accumulator 10 serving as the low-pressure bank, the first FCV vehicle Behind the filling of the fuel tank 202a of the 200a with hydrogen fuel, the supply unit 106 further fills the fuel tank 202b of the second FCV vehicle 200b from the accumulator 10 using the dispenser 30b. When the fuel tank 202a of the first FCV vehicle 200a is already filled with hydrogen fuel from the accumulator 12 which is a medium pressure bank, hydrogen to the fuel tank 202a of the first FCV vehicle 200a is filled. Behind the filling of fuel, the supply unit 106 uses the accumulator 10 to the dispenser 30b used for filling the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel to fill the fuel tank 202a of the second FCV vehicle 200b. The fuel tank 202b is filled.

In the B medium pressure bank filling step (S242), the supply unit 106 transfers hydrogen to the fuel tank 202a of the first FCV vehicle 200a when the differential pressure between the accumulator 10 and the fuel tank 202b becomes smaller than the threshold value. The accumulator that supplies hydrogen fuel to the dispenser 30b after the fuel filling is a low-pressure bank. The accumulator 10 is used to fill the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel. Switch to the accumulator 12 to be. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 12 to the fuel tank 202b of the second FCV vehicle 200b using the dispenser 30b.

In the B high-pressure bank filling step (S244), the supply unit 106 supplies hydrogen fuel to the fuel tank 202a of the first FCV vehicle 200a when the differential pressure between the accumulator 12 and the fuel tank 202b becomes smaller than the threshold value. The accumulator that supplies hydrogen fuel to the dispenser 30b is replaced with a high-pressure bank that has been used to fill the fuel tank 202a of the first FCV vehicle 200a from the accumulator 12 that serves as a medium-pressure bank. Switch to the accumulator 14. Then, the supply unit 106 supplies hydrogen fuel from the accumulator 14 to the fuel tank 202b of the second FCV vehicle 200b using the dispenser 30b.

When the FCV information of the second FCV vehicle 200b is received (when the flow (3) is selected), the fuel tank 202b of the second FCV vehicle 200b is filled with hydrogen fuel as a low-pressure bank. When the differential pressure can be sufficiently obtained even from the accumulator 10, the operation is carried out from the B low pressure bank filling step (S240). If the pressure in the fuel tank 202b is high and the differential pressure cannot be sufficiently obtained from the used accumulator 10, the B low-pressure bank filling step (S240) is omitted and the B medium-pressure bank filling step (S242) is performed. do. Similarly, when the pressure of the fuel tank 202b is high and the differential pressure cannot be sufficiently obtained from the used accumulator 12, the B medium pressure bank filling step (S242) is further omitted, and the B high pressure bank filling step (B high pressure bank filling step). It is carried out from S244).

In this way, the fuel tank 202b of the second FCV vehicle 200b is filled with hydrogen fuel from the accumulator used for filling the fuel tank 202a among the plurality of accumulators 10, 12, and 14 of the multi-stage accumulator 101. To start.

Here, as described above, the multi-stage accumulator 101 composed of accumulators 10, 12, and 14 originally assumes hydrogen filling for one FCV vehicle. The filling of the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel proceeds prior to the filling of the fuel tank 202b of the second FCV vehicle 200b with hydrogen fuel. Therefore, when filling the fuel tank 202b of the second FCV vehicle 200b with hydrogen fuel, as described above, the accumulators 10, 12, and 14 have already filled the fuel tank 202a of the first FCV vehicle 200a with hydrogen. After being used for fuel filling. Therefore, even if the accumulator 14 serving as a high-pressure bank is switched to fill the fuel tank 202b with hydrogen fuel, the hydrogen fuel itself or the pressure for performing differential pressure filling is insufficient, and the second FCV vehicle 200b Filling of the fuel tank 202b with hydrogen fuel may not be completed. Therefore, if the filling of hydrogen fuel into the fuel tank 202b is not completed at the time when the B high-pressure bank filling step (S244) is completed, the B spare bank filling step (S246) is carried out.

As the B spare bank filling step (S246), the supply unit 106 uses a high-pressure bank as a pressure accumulator that supplies hydrogen fuel to the dispenser 30b after the fuel tank 202a of the first FCV vehicle 200a is filled with hydrogen fuel. The accumulator 14 is switched to the reserve accumulator 19 which is a spare bank. Then, the supply unit 106 supplies hydrogen fuel from the preliminary accumulator 19 to the fuel tank 202b of the second FCV vehicle 200b using the dispenser 30b.

As described above, the fuel tank 202b of the second FCV vehicle 200b is from the accumulator used for filling the fuel tank 202a of the first FCV vehicle 200a among the plurality of accumulators of the multi-stage accumulator 101. The filling of hydrogen fuel is started, the filling is continued while switching the plurality of accumulators 10, 12, and 14 of the multi-stage accumulator 10 in order, and the filling from the final stage accumulator of the plurality of accumulators of the multi-stage accumulator 101 is also performed. When filling is not completed yet, filling is performed from the preliminary accumulator 19.

As a result, the filling of the fuel tank 202b of the second FCV vehicle 200b with hydrogen fuel is completed.

As described above, according to the first embodiment, the time for filling the second FCV vehicle 200b with hydrogen fuel is delayed without providing a set of supply equipment such as a multi-stage accumulator and a compressor for two vehicles. Can be reduced.

FIG. 7 is a modified example of the configuration diagram showing the configuration of the hydrogen fuel supply system of the hydrogen station according to the first embodiment. FIG. 7 is the same as FIG. 1 except that the accumulator 29 is arranged in parallel with the accumulator 10 and the accumulator serving as the low-voltage bank that starts filling first is configured in two stages. Since hydrogen fuel is supplied to the two FCV vehicles 200a and 200b at the same time by using the two dispensers 30a and 30b, the reduction rate of the hydrogen fuel becomes faster. Therefore, the reduction rate of hydrogen fuel can be relaxed by arranging a plurality of rows of accumulators to be used at the same time. In particular, it is more effective to arrange the accumulators 10 which are the low-voltage banks to be used first in parallel.

FIG. 8 is another modification of the configuration diagram showing the configuration of the hydrogen fuel supply system of the hydrogen station according to the first embodiment. In FIG. 8, two nozzles 31a and 31b are arranged in one dispenser 30a. Then, hydrogen fuel is supplied from the first nozzle 31a to the fuel tank 202a of the first FCV vehicle 200a, and hydrogen fuel is supplied from the second nozzle 31b to the fuel tank 202b of the second FCV vehicle 200b. Supply. Since the number of dispensers 30a is one, the valves 22b, 24b, and 26b are not required. Other configurations are the same as in FIG. When starting to fill the fuel tank 202b of the second FCV vehicle 200b that arrived at the hydrogen station 102 later than the first FCV vehicle 200a with hydrogen fuel, the same accumulator of the multi-stage accumulator 101 (for example, accumulator) From 10), hydrogen fuel is filled into two FCV vehicles 200a and 200b at the same time. As a result, the dispenser 30a and the cooler 32a can be shared. Needless to say, the FCV information of the second FCV vehicle 200b is communicated via the repeater 34a.

FIG. 9 is a modified example of the configuration diagram showing the configuration of the hydrogen fuel supply system of the hydrogen station according to the first embodiment. In the example of FIG. 9, of the accumulator 10 and the accumulator 29 in which the accumulator serving as the low-voltage bank shown in FIG. 7 has a two-stage configuration, a valve or the like is arranged in the accumulator 29 to control the accumulator 10. Arranged independently of. That is, the accumulator 29 is connected to the discharge side of the compressor 40 via a valve 621 by a pipe. The accumulator 29 is connected to the dispenser 30a via a valve 622a by a pipe, and is connected to the dispenser 30b via a valve 622b by a pipe. Further, the pressure in the accumulator 29 is measured by the pressure gauge 611. Other points are the same as in FIG. When hydrogen fuel is supplied to two FCV vehicles 200a and 200b at the same time by using two dispensers 30a and 30b by making the accumulator 29 which is a low pressure bank independent from the accumulator 10 which is the same low pressure bank. , Each can receive hydrogen fuel from independent low-voltage banks. Therefore, when banks in the same pressure band with the same lower limit pressure are used for a plurality of FCV vehicles 200a and 200b at the same time, they can be controlled independently. Therefore, for example, in the flowchart shown in FIG. 6, the supply from the low-voltage bank to the FCV vehicle 200b may be started after the completion of the supply from the low-voltage bank to the FCV vehicle 200a, but the supply to the FCV vehicle 200a may be started. The supply from the low pressure bank (accumulator 29) to the FCV vehicle 200b can be started without waiting for the completion of the supply from the low pressure bank (accumulator 10).

In the example of FIG. 9, the case where the accumulator serving as the low-voltage bank has a two-stage configuration of the accumulator 10 and the accumulator 29 is shown, but the present invention is not limited to this. The accumulator serving as the medium pressure bank may have a two-stage configuration of the accumulator 12 and the accumulator 29. Alternatively, the accumulator serving as the high-voltage bank may have a two-stage configuration of the accumulator 14 and the accumulator 29. The same applies to the case of FIG. 7. Alternatively, the number of banks having a two-stage structure may be not limited to one bank but two banks.

FIG. 10 is another modification of the configuration diagram showing the configuration of the hydrogen fuel supply system of the hydrogen station according to the first embodiment. In FIG. 10, two nozzles 31a and 31b are arranged in one dispenser 30a. Then, hydrogen fuel is supplied from the first nozzle 31a to the fuel tank 202a of the first FCV vehicle 200a, and hydrogen fuel is supplied from the second nozzle 31b to the fuel tank 202b of the second FCV vehicle 200b. Supply. Since the number of dispensers 30a is one, the valves 22b, 24b, and 26b are not required. Other configurations are the same as in FIG. 7. When starting to fill the fuel tank 202b of the second FCV vehicle 200b that arrived at the hydrogen station 102 later than the first FCV vehicle 200a with hydrogen fuel, the same accumulator of the multi-stage accumulator 101 (for example, accumulator) From 10), hydrogen fuel is filled into two FCV vehicles 200a and 200b at the same time. As a result, the dispenser 30a and the cooler 32a can be shared. Needless to say, the FCV information of the second FCV vehicle 200b is communicated via the repeater 34a. Then, in the example of FIG. 10, the reduction rate of hydrogen fuel can be relaxed by arranging a plurality of rows of accumulators to be used at the same time. In particular, it is more effective to arrange the accumulators 10 which are the low-voltage banks to be used first in parallel.

FIG. 11 is another modification of the configuration diagram showing the configuration of the hydrogen fuel supply system of the hydrogen station according to the first embodiment. In FIG. 11, two nozzles 31a and 31b are arranged in one dispenser 30a. Then, hydrogen fuel is supplied from the first nozzle 31a to the fuel tank 202a of the first FCV vehicle 200a, and hydrogen fuel is supplied from the second nozzle 31b to the fuel tank 202b of the second FCV vehicle 200b. Supply. Since the number of dispensers 30a is one, the valves 22b, 24b, and 26b are not required. Other configurations are the same as in FIG. In this way, even when the two nozzles 31a and 31b are arranged in one dispenser 30a, the accumulator 29 which is a low pressure bank may be made independent from the accumulator 10 which is the same low pressure bank.

In the example of FIG. 9, the case where the accumulator serving as the low-voltage bank has a two-stage configuration of the accumulator 10 and the accumulator 29 is shown, but the present invention is not limited to this. The accumulator serving as the medium pressure bank may have a two-stage configuration of the accumulator 12 and the accumulator 29. Alternatively, the accumulator serving as the high-voltage bank may have a two-stage configuration of the accumulator 14 and the accumulator 29. The same applies to the case of FIG. 7. Alternatively, the number of banks having a two-stage structure may be not limited to one bank but two banks.

Embodiment 2.
In the first embodiment, the filling of the first FCV vehicle 200a with hydrogen fuel and the filling of the second FCV vehicle 200b with hydrogen fuel have the same filling speed β (or substantially the same filling speed). ) Was explained. Therefore, in the example of FIG. 5, when the B low-pressure bank filling step (filling start) (S211) is carried out, the pressure drop of the accumulator 10 is greatly accelerated by the simultaneous filling of the second FCV vehicle 200b. It may affect the filling time of the eyes FCV vehicle 200a. Therefore, with the advent of the second FCV vehicle 200b, it may take a long time to complete the filling of the first FCV vehicle 200a. Further, in the example of FIG. 6, if the second FCV vehicle 200b is filled from the low pressure bank without waiting for the supply completion from the low pressure bank to the first FCV vehicle 200a, the first FCV is filled. It may affect the filling time of the vehicle 200a. In such a case, it is desirable to wait for the completion of supply from the low-voltage bank to the first FCV vehicle 200a for filling the second FCV vehicle 200b from the low-voltage bank. Therefore, in the second embodiment, the second FCV from the same accumulator is simultaneously used so as not to affect the filling time of the first FCV vehicle 200a, or even if it is given, it can be ignored. A configuration for realizing simultaneous filling of the vehicle 200b will be described.

The configuration of the hydrogen fuel supply system of the hydrogen station in the second embodiment is the same as that in FIG. Further, the internal configuration of the control circuit in the second embodiment is the same as that in FIG. As a part of the main steps of the hydrogen fuel supply method in the second embodiment, the contents of the flow (1) are the same as those in FIG. Hereinafter, the contents other than the points particularly described are the same as those in the first embodiment.

FIG. 12 is a flowchart showing another part of the main steps of the hydrogen fuel supply method according to the second embodiment. FIG. 12 is the same as FIG. 5 except that the determination step (S203) is used instead of the determination step (S204) and the filling flow calculation step (S209) is used instead of the filling flow calculation step (S210). be.

The content of the standby time calculation step (S202) is the same as that of the first embodiment. As a result, after receiving the FCV information of the second FCV vehicle 200b (when the flow (2) is selected), the waiting time until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b is set. You can get it.

In the determination step (S203), after the determination unit 94 receives the FCV information of the second FCV vehicle 200b (when the flow (2) is selected), the pressure of the fuel tank 202a is the pressure of the fuel tank 202b. It is determined whether or not the waiting time until it becomes the same as is within the predetermined time tth'. In the first embodiment, the waiting time is, for example, 30 seconds as a threshold value, but in the second embodiment, it is preferable to set a time shorter than the threshold value tth in the first embodiment as a new threshold value tth'. For example, it is set to 5 to 20 seconds (here, for example, 15 seconds). In the second embodiment, the waiting time from the arrival of the second FCV vehicle 200b at the hydrogen station 102 to the start of filling is shortened as much as possible. Alternatively, it may be configured to eliminate the waiting time. If the time until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b is within the predetermined time tth', the process proceeds to the determination step (S206). The content of the determination step (S206) is the same as that of the first embodiment. If the time until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b exceeds the predetermined time tth', the process proceeds to the filling flow calculation step (S209).

As described above, in the first embodiment, the filling of the first FCV vehicle 200a with the hydrogen fuel and the filling of the second FCV vehicle 200b with the hydrogen fuel have the same filling rate β (or substantially the same filling rate β). It is performed at the same filling rate). Therefore, if the same accumulator used to fill the first FCV vehicle 200a is simultaneously filled into the second FCV vehicle 200b, the filling time of the first FCV vehicle 200a will be affected. It may be given. Therefore, in the second embodiment, when the same accumulator fills the second FCV vehicle 200b at the same time while at least the first FCV vehicle 200a is being filled, the second FCV vehicle 200b is filled. The filling speed β of the hydrogen fuel into the FCV vehicle 200b is reduced to a lower filling speed β'to fill the FCV vehicle 200b. In other words, when the dispenser 30a is used to fill the fuel tank 202a of the first FCV vehicle 200a and the dispenser 30b is used to fill the fuel tank 202b of the second FCV vehicle 200b in parallel, fuel is used. Filling the tank 202b is performed at a lower speed than filling the fuel tank 202a. As a result, it is possible to simultaneously fill the second FCV vehicle 200b without affecting the filling time of the first FCV vehicle 200a. In other words, in the second embodiment, the start of filling the second FCV vehicle 200b can be accelerated.

In the filling flow calculation step (S209), when the time until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b exceeds a predetermined time tth', the end pressure / temperature calculation unit 54 stores the storage device 80. The conversion table 81 is read from, and the pressure and temperature of the fuel tank 202a, the volume of the fuel tank 202a, and the outside air at the time when the FCV information of the second FCV vehicle 200b is received (when the flow (2) is selected). The final pressure PF corresponding to the temperature and the final temperature are calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. Similarly, the final pressure PF corresponding to the pressure, temperature, and volume of the fuel tank 202b at the time when the FCV information of the second FCV vehicle 200b is received (when the flow (2) is selected). And the final temperature is calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. If there is a large error in the obtained results using only the data in the conversion table 81, the correction table 83 may be provided based on the results obtained by experiments, simulations, or the like.

Next, the flow planning unit 56 reads the control data of the flow (2) from the storage device 90, and uses the set of the multi-stage accumulator 101 and the preliminary accumulator 19 along the flow (2) to use the FCV vehicle. A filling flow plan for differentially supplying (filling) hydrogen fuel to the fuel tank 202a of the 200a and the fuel tank 202b of the FCV vehicle 200b is created. In such a case, the flow planning unit 56 sets the filling speed of the hydrogen fuel in the first FCV vehicle 200a and the filling speed of the hydrogen fuel in the second FCV vehicle 200b to be the same filling speed β (or substantially the same). Approximate filling speed). Then, first, the start time of filling the second FCV vehicle 200b with hydrogen fuel is calculated as the time when the waiting time until the pressure of the fuel tank 202a becomes the same as the pressure of the fuel tank 202b has elapsed. As described in FIG. 3, the flow planning unit 56 selects the accumulator (selection of accumulators 10, 12, 14, 19) so that the calculated pressure of the fuel tanks 202a and 202b becomes the final pressure PF. A filling flow plan including the switching timing of the multi-stage accumulator 101 and the preliminary accumulator 19 is created.

As a result, it is possible to obtain the filling end time when the pressure of the fuel tank 202b reaches the final pressure PF when the fuel tanks 202a and 202b are filled at the same filling speed β (or substantially the same filling speed).

Next, the flow planning unit 56 sets the start time of filling the second FCV vehicle 200b with hydrogen fuel as the time when the threshold value tth'elapses of the standby time, and sets the filling end time when the pressure of the fuel tank 202b reaches the final pressure PF. While maintaining, the fuel tank 202a of the FCV vehicle 200a does not affect the filling end time when it reaches the final pressure PF (the filling end time is not delayed), or the fuel tank 202a is continuously filled with gas. The filling speed β'of the FCV vehicle 200b of the eye to the fuel tank 202b is calculated (the case where the standby time is the threshold tth').

Alternatively, the flow planning unit 56 selects the current time (or the time when the FCV information of the second FCV vehicle 200b is received (flow (2)) as the start time of filling the second FCV vehicle 200b with hydrogen fuel. It may be calculated as (when it is done) (case where the waiting time is zero).

It goes without saying that the calculated filling rate β'is slower (smaller) than the original filling rate β. Further, the filling speed β'may be a constant value or a variable value that changes with the passage of time after the start of filling. Then, the flow planning unit 56 uses the filling speed β'to elapse the standby time threshold tth' (or the current time, or the time when the FCV information of the second FCV vehicle 200b is received (flow). A filling flow plan is newly created in which the filling start time (when (2) is selected) is set and the filling end time at which the pressure of the fuel tank 202b reaches the final pressure PF is maintained. The control data of the above is temporarily stored in the storage device 82. Further, the accumulator is switched in the order of accumulators 10, 12, 14, and 19.

The system control unit 58 reads out the control data of the filling flow plan planned along the flow (2), and controls the supply control unit 63 according to the control data. The supply control unit 63 controls the supply unit 106 under the control of the system control unit 58 to supply hydrogen fuel to the fuel tank 202a of the FCV vehicle 200a and to supply hydrogen fuel to the fuel tank 202b of the FCV vehicle 200b. Supply. Furthermore, the system control unit 58 controls the dispenser control unit 64 and the valve control unit 65. The dispenser control unit 64 communicates with the dispensers 30a and 30b via the communication control circuit 50 and controls the operation of the dispensers 30a and 30b. The valve control unit 65 outputs a control signal to the valves 22a, 22b, 24a, 24b, 26a, 26b, 28a, 28b via the communication control circuit 50, and controls the opening and closing of each valve. Here, as a method of narrowing the filling speed β to the filling speed β', it is preferable to adjust by narrowing the filling flow rate of hydrogen gas from the dispenser 30b to the fuel tank 202b.

When the pressure of the fuel tank 202b of the second FCV vehicle 200b is lower than the lower limit pressure of the accumulator 10 serving as the low pressure bank, the operation is performed from the B low pressure bank filling step (filling start) (S211). When the pressure of the fuel tank 202b is high and higher than the lower limit of use of the low pressure bank, the B low pressure bank filling step (filling start) (S211) is omitted and the operation (filling) is started from the B medium pressure bank filling step (S212). Start.

The contents of each step after the flow (2) are the same as those in the first embodiment.

As described above, according to the second embodiment, the filling start time of the second FCV vehicle 200b can be advanced in the flow (2). Therefore, even though the user of the second FCV vehicle 200b or the employee of the hydrogen station 102 has set the start of filling the second FCV vehicle 200b to the dispenser 30b or the like, the second FCV vehicle 200b It is possible to prevent a misunderstanding that the system malfunctions (faults) due to the fact that the filling is not started. Further, it is possible to prevent the first FCV vehicle 200a from being affected by the filling end time. Alternatively, the gas filling of the fuel tank 202a can be maintained without interruption.

FIG. 13 is a flowchart showing another part of the main steps of the hydrogen fuel supply method according to the second embodiment. In FIG. 13, except that the filling flow calculation step (S229) is used instead of the filling flow calculation step (S230) and the B low-pressure bank filling step (S241) is used instead of the B low-pressure bank filling step (S240). , The same as in FIG.

As the filling flow calculation step (S229), the end pressure / temperature calculation unit 54 reads the conversion table 81 from the storage device 80, and when the FCV information of the second FCV vehicle 200b is received (flow (3) is selected. The final pressure PF and final temperature corresponding to the pressure and temperature of the fuel tank 202a, the volume of the fuel tank 202a, and the outside air temperature at the time point) are calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. Similarly, the final pressure PF corresponding to the pressure, temperature, and volume of the fuel tank 202b at the time when the FCV information of the second FCV vehicle 200b is received (when the flow (3) is selected). And the final temperature is calculated and predicted. Further, the end pressure / temperature calculation unit 54 reads the correction table 83 from the storage device 80 and corrects the numerical value obtained by the conversion table 81. If there is a large error in the obtained results using only the data in the conversion table 81, the correction table 83 may be provided based on the results obtained by experiments, simulations, or the like.

Next, the flow planning unit 56 reads the control data of the flow (3) from the storage device 90, and uses the set of the multi-stage accumulator 101 and the preliminary accumulator 19 along the flow (3) to use the FCV vehicle. A filling flow plan for differentially supplying (filling) hydrogen fuel to the fuel tank 202a of the 200a and the fuel tank 202b of the FCV vehicle 200b is created. In such a case, the flow planning unit 56 sets the filling speed of the hydrogen fuel in the first FCV vehicle 200a and the filling speed of the hydrogen fuel in the second FCV vehicle 200b to be the same filling speed β (or substantially the same). Approximate filling speed). Then, when the fuel tank 202a of the first FCV vehicle 200a is filled with hydrogen fuel from the accumulator 10 which is still a low pressure bank, the hydrogen fuel of the second FCV vehicle 200b is filled. The filling start time is calculated as the time when the fuel tank 202a of the first FCV vehicle 200a from the accumulator 10 has been filled. If the fuel tank 202a of the first FCV vehicle 200a has already been filled with hydrogen fuel to the accumulator 12, which is a medium pressure bank, the second FCV vehicle 200b is currently filled with hydrogen fuel. It may be calculated as the start time. As described in FIG. 3, the flow planning unit 56 selects the accumulator (selection of accumulators 10, 12, 14, 19) so that the calculated pressure of the fuel tanks 202a and 202b becomes the final pressure PF. A filling flow plan including the switching timing of the multi-stage accumulator 101 and the preliminary accumulator 19 is created.

As a result, the pressure of the fuel tank 202b reaches the final pressure PF when the fuel tanks 202a and 202b are filled with the same filling speed β (or substantially the same filling speed) without using the low pressure banks at the same time. The filling end time can be obtained.

Next, the flow planning unit 56 sets the start time of filling the second FCV vehicle 200b with hydrogen fuel as the time when the threshold tth'of the standby time used in the flow (2) has elapsed, and the pressure of the fuel tank 202b is the final pressure. While maintaining the filling end time reaching the PF, the fuel tank 202a of the FCV vehicle 200a does not affect the filling end time reaching the final pressure PF (the filling end time is not delayed), or the fuel tank 202a is filled with gas. The filling speed β'of the fuel tank 202b of the second FCV vehicle 200b is calculated so as to continue (the case where the standby time is the threshold tth').

Alternatively, the flow planning unit 56 selects the current time (or the time when the FCV information of the second FCV vehicle 200b is received (flow (3)) as the start time of filling the second FCV vehicle 200b with hydrogen fuel. It may be calculated as (when it is done) (case where the waiting time is zero).

When the fuel tank 202a of the first FCV vehicle 200a is filled with hydrogen fuel from the accumulator 10 which is still a low pressure bank, the calculated filling speed β'is even in the case of the flow (3). Needless to say, the filling rate β is slower (smaller) than the original filling rate β. Further, the filling speed β'may be a constant value or a variable value that changes with the passage of time after the start of filling. Then, the flow planning unit 56 uses the filling speed β'to receive the FCV information of the standby time threshold tth' (or the current time, or the second FCV vehicle 200b) (flow (3). ) Is selected as the filling start time), and a filling flow plan is newly created in which the filling end time at which the pressure of the fuel tank 202b reaches the final pressure PF is maintained. The data is temporarily stored in the storage device 82. If the filling of the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel has already been switched to the accumulator 12 which is the medium pressure bank, the data is originally stored in the storage device 82. The filling flow plan created by using the filling rate β of the above may be used as it is. Further, the accumulators are switched in the order of accumulators 10, 12, 14, and 19.

The system control unit 58 reads out the control data of the filling flow plan planned along the flow (3), and controls the supply control unit 63 according to the control data. The supply control unit 63 controls the supply unit 106 under the control of the system control unit 58 to supply hydrogen fuel to the fuel tank 202a of the FCV vehicle 200a and to supply hydrogen fuel to the fuel tank 202b of the FCV vehicle 200b. Supply. Furthermore, the system control unit 58 controls the dispenser control unit 64 and the valve control unit 65. The dispenser control unit 64 communicates with the dispensers 30a and 30b via the communication control circuit 50 and controls the operation of the dispensers 30a and 30b. The valve control unit 65 outputs a control signal to the valves 22a, 22b, 24a, 24b, 26a, 26b, 28a, 28b via the communication control circuit 50, and controls the opening and closing of each valve. Here, as a method of narrowing the filling speed β to the filling speed β', it is preferable to adjust by narrowing the filling flow rate of hydrogen gas from the dispenser 30b to the fuel tank 202b, as in the case of the flow (2). be.

In the first FCV vehicle 200a, the fuel tank 202a is continuously filled from the accumulator 10 using the dispenser 30a prior to the filling work of the second FCV vehicle 200b.

The contents of the A medium pressure bank filling step (S231) and the A high voltage bank filling step (S232) are the same as those in the first embodiment. As a result, the filling of the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel is completed.

In the B low-pressure bank filling step (S241), when the fuel tank 202a of the first FCV vehicle 200a is being filled with hydrogen fuel from the accumulator 10 serving as the low-pressure bank, the supply unit Further, the 106 is the time when the threshold tth'(for example, 15 seconds) of the standby time using the hydrogen fuel filling start time of the second FCV vehicle 200b in the flow (2) has elapsed, or the second FCV vehicle. The start time of filling the 200b with hydrogen fuel is set to the current time (or the time when the FCV information of the second FCV vehicle 200b is received (the time when the flow (3) is selected)) at the filling speed β'at the dispenser 30b. The fuel tank 202b of the second FCV vehicle 200b is filled from the accumulator 10. From the accumulator 12 in which the filling of hydrogen fuel into the fuel tank 202a of the first FCV vehicle 200a is already a medium pressure bank. When filled, the supply unit 106 uses the dispenser 30b from the accumulator 10 used for filling the fuel tank 202a of the first FCV vehicle 200a with hydrogen fuel to fill the fuel tank 202a of the second FCV vehicle 200b. Fuel tank 202b is filled.

The contents of each step after the flow (3) are the same as those in the first embodiment.

As described above, according to the second embodiment, in the flow (3), the filling start time of the second FCV vehicle 200b is advanced without delaying the filling end time of the first FCV vehicle 200a. Can be done. Alternatively, the gas filling of the fuel tank 202a can be maintained without interruption. Therefore, even though the user of the second FCV vehicle 200b or the employee of the hydrogen station 102 has set the start of filling the second FCV vehicle 200b to the dispenser 30b or the like, the second FCV vehicle 200b It is possible to prevent a misunderstanding that the system malfunctions (faults) due to the fact that the filling is not started.

Further, as a modification of the configuration diagram showing the configuration of the hydrogen fuel supply system of the hydrogen station in the second embodiment, the configurations shown in FIGS. 7 to 11 described above can be used.

The embodiment has been described above with reference to a specific example. However, the present invention is not limited to these specific examples. For example, a case where a multi-stage accumulator 101 using three accumulators 10, 12, and 14 is used for filling hydrogen fuel for one FCV vehicle is shown, but the present invention is not limited to this. Depending on the volume of the accumulators 10, 12, 14 and the like, more accumulators may be used for filling one unit. Alternatively, conversely, it may be possible to cover the filling of one unit with two accumulators. In any case, as a preliminary accumulator, the number of accumulators is less than the number of accumulators required to fill one hydrogen fuel, or the capacity of all accumulators required to fill one hydrogen fuel. Use a small capacity.

In the above-described example, the case where two dispensers 30 are arranged and the case where one or two nozzles 31 are arranged in one dispenser 30 have been described, but the present invention is not limited to this. The number of dispensers 30 may be 3 or more. Similarly, the number of nozzles 31 arranged in one dispenser 30 may be three or more. For example, if there are three nozzles 31 (three dispensers 30), when the third FCV vehicle 200c arrives, the pressure comparison is performed in the same manner as when the second FCV vehicle 200b arrives. , The filling may be performed based on the result. In such a case, the storage device 90 may also store the filling flow when three or more FCV vehicles 200 are simultaneously filled. Then, the same process as the flow selection step (S112) may be performed when the third FCV vehicle 200c arrives. After that, it may be filled according to the selected flow.

Further, in the above-mentioned example, when two FCV vehicles 200a and 200b are simultaneously filled from the same bank, it is preferable to provide a device (check valve, valve switching by flow rate detection, etc.) for preventing the backflow of hydrogen fuel.

In addition, although the description of parts that are not directly necessary for the description of the present invention, such as the device configuration and control method, is omitted, the required device configuration and control method can be appropriately selected and used.

In addition, all hydrogen fuel supply methods and hydrogen supply systems that include the elements of the present invention and can be appropriately redesigned by those skilled in the art are included in the scope of the present invention.

10,12,14,29 Accumulator 11,13,15,17 Pressure gauge 19 Preliminary accumulator 21,22,23,24,25,26,27,28 Valve 30 Dispenser 32 Cooler 34 Repeater 40 Compressor 50 Communication control circuit 51 Memory 52 Receiver 54 End pressure / temperature calculation unit 56 Flow planning unit 58 System control unit 60, 65 Valve control unit 62 Compressor control unit 64 Dispenser control unit 66 Bank pressure receiver 80, 82, 84, 90 Storage device 88 Comparison unit 89 Selection unit 92 Standby time calculation unit 94, 96 Judgment unit 100 Control circuit 101 Multi-stage accumulator 102 Hydrogen station 104 Depressurizing mechanism 106 Supply unit 200 FCV vehicle 202 Fuel tank 204 In-vehicle device 302 Valve 304 Intermediate pressure accumulator 306 Hydrogen trailer 308 Hydrogen production equipment 312,314,316,318 Pressure gauge 322,324,326,328 Valve 500 Hydrogen fuel supply system 611 Pressure gauge 621,622 Valve

Claims (7)

A first including pressure information regarding a first hydrogen storage container mounted on the first fuel cell vehicle from a first in-vehicle device mounted on a first fuel cell vehicle (FCV) powered by hydrogen fuel. The process of receiving the information of 1 and
Of the first and second dispensers commonly connected to a set of a multi-stage accumulator in which hydrogen fuel is accumulating and a pre-accumulator less than the number of the multi-stage accumulators, the first dispenser is used. A step of filling the first hydrogen storage container with hydrogen fuel from the multi-stage accumulator and
It is mounted on a second fuel cell vehicle (FCV) powered by hydrogen fuel after the start of receiving the first information and before the filling of the first hydrogen storage container with hydrogen fuel is completed. The process of receiving the second information including the pressure information regarding the second hydrogen storage container mounted on the second fuel cell vehicle from the second vehicle-mounted device, and the process of receiving the second information including the pressure information.
A step of comparing the pressure of the first hydrogen storage container with the pressure of the second hydrogen storage container at the time when the second information is received, and
Using the first and second dispensers from the set of the multi-stage accumulator and the pre-accumulator, parallel to the first and second hydrogen storage containers after the time when the second information is received. A process of selecting a filling flow corresponding to the comparison result from a plurality of filling flows when filling hydrogen fuel into the container, and
From the time when the second information is received, hydrogen fuel is supplied in parallel from the set of the multi-stage accumulator and the pre-accumulator to the first and second hydrogen storage containers according to the selected filling flow. The filling process and
A method of supplying hydrogen fuel, which is characterized by being equipped with. As a result of comparing the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage container at the time when the second information is received, the pressure of the first hydrogen storage container is the second. If the pressure is less than the pressure of the hydrogen storage container,
A step of determining whether or not the time until the pressure of the first hydrogen storage container becomes the same as the pressure of the second hydrogen storage container after receiving the second information is within a predetermined time. Further prepare
When the time from the time when the second information is received until the pressure of the first hydrogen storage container becomes the same as the pressure of the second hydrogen storage container is within the predetermined time, the said. The first hydrogen using the first dispenser while waiting for filling of the second hydrogen storage container until the pressure of the first hydrogen storage container becomes the same as the pressure of the second hydrogen storage container. After the storage container is filled and the pressure of the first hydrogen storage container becomes the same as the pressure of the second hydrogen storage container, a plurality of pressure accumulators of the set of the multi-stage accumulator and the preliminary accumulator are used. While switching the accumulator used in the vessel at the same timing, the first hydrogen storage container is filled with the first dispenser, and in parallel, the second hydrogen is used with the second dispenser. Fill the storage container and
When the time until the pressure of the first hydrogen storage container becomes the same as the pressure of the second hydrogen storage container after receiving the second information is not within the predetermined time, the second. After the time when the information of 2 is received, the first hydrogen is used by using the first dispenser while switching the accumulator used in the plurality of accumulators of the set of the multi-stage accumulator and the preliminary accumulator. The storage container is filled, and in parallel, the accumulator used in the plurality of accumulators in the set of the multi-stage accumulator and the preliminary accumulator is switched for filling the first hydrogen storage container. The method for supplying hydrogen fuel according to claim 1, wherein the second hydrogen storage container is filled with the second dispenser while switching independently. As a result of comparing the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage container at the time when the second information is received, the pressure of the first hydrogen storage container is the second. If the pressure is greater than the pressure in the hydrogen storage vessel
After receiving the second information, the first hydrogen storage container is filled with the first dispenser while switching the accumulator used among the plurality of accumulators of the multi-stage accumulator, and the first hydrogen storage container is filled in parallel. The accumulator used in the plurality of accumulators in the set of the multi-stage accumulator and the pre-accumulator is switched independently of the switching for filling the first hydrogen storage container. The method for supplying hydrogen fuel according to claim 1, wherein the second hydrogen storage container is filled with the dispenser of 2. The second hydrogen storage container starts filling hydrogen fuel from the accumulator used for filling the first hydrogen storage container among the plurality of accumulators of the multi-stage accumulator, and the multi-stage accumulator It is characterized in that filling is continued while switching a plurality of accumulators in order, and when filling from the final stage accumulator of the plurality of accumulators of the multi-stage accumulator is not completed yet, the pre-accumulator is filled. The method for supplying hydrogen fuel according to claim 3. As a result of comparing the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage container at the time when the second information is received, the pressure of the first hydrogen storage container and the pressure of the second hydrogen storage container are compared. If the difference from the pressure in the hydrogen storage vessel is less than the threshold
After the time when the second information is received, the first dispenser is used while switching the accumulator used in the plurality of accumulators of the set of the multi-stage accumulator and the pre-accumulator at the same timing. The method for supplying hydrogen fuel according to claim 1, wherein the first hydrogen storage container is filled, and the second hydrogen storage container is filled in parallel with the second dispenser. A multi-stage accumulator with hydrogen fuel accumulating and
Preliminary accumulators with less hydrogen fuel than the number of multi-stage accumulators
The first and second dispensers for supplying the hydrogen fuel, which are commonly connected to the set of the multi-stage accumulator and the preliminary accumulator,
Regarding the first hydrogen storage container mounted on the first fuel cell vehicle from the first in-vehicle device mounted on the first fuel cell vehicle (FCV) powered by the hydrogen fuel arriving at the hydrogen station. A second fuel cell vehicle (FCV) powered by a hydrogen fuel that arrives at the hydrogen station later than the first fuel cell vehicle while receiving the first information including pressure information. A receiving unit that receives second information including pressure information regarding the second hydrogen storage container mounted on the second fuel cell vehicle from the second vehicle-mounted device.
A comparison unit that compares the pressure of the first hydrogen storage container with the pressure of the second hydrogen storage container at the time when the second information is received, and
Using the first and second dispensers from the set of the multi-stage accumulator and the pre-accumulator, parallel to the first and second hydrogen storage containers after the time when the second information is received. A selection unit that selects a filling flow corresponding to the comparison result from a plurality of filling flows when filling hydrogen fuel into the container.
With
According to the selected filling flow, the first hydrogen storage container is filled with the first dispenser from a plurality of accumulators in the set of the multi-stage accumulator and the pre-accumulator, and in parallel. , A hydrogen supply system comprising filling the second hydrogen storage container with the second dispenser. When the first hydrogen storage container is filled with the first dispenser and the second hydrogen storage container is filled with the second dispenser in parallel, the second hydrogen storage is performed. The method for supplying hydrogen fuel according to claim 2 or 3, wherein the filling of the container is performed at a lower speed than the filling of the first hydrogen storage container.

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