JP7298570B2 - Power supply system and moving object - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to power supply systems and mobile bodies.

Patent Literature 1 discloses an electric mileage display device for a vehicle. This electric travelable distance display device calculates the travelable distance (reference travelable distance) when the air conditioner is not in operation from the electric power consumption when the air conditioner is not in operation and the remaining capacity of the battery. When the air conditioner is in operation, a correction coefficient is obtained from the power consumption of the air conditioner and multiplied by the correction coefficient of the standard travelable distance to calculate the travelable distance when the air conditioner is in operation. .

JP 2013-158111 A

The power consumption of an air conditioner fluctuates depending on the outside temperature. As a result, the fuel consumption and the travelable distance also fluctuate. In the method of Patent Literature 1, the correction coefficient corresponding to the outside temperature is used to calculate and display the overall travelable distance. , the change in the displayed travelable distance may give the user a sense of discomfort. It should be noted that this problem occurs not only in electric vehicles using batteries, but also in moving bodies such as vehicles, trains, ships, and aircraft using internal combustion engines or fuel cells. Furthermore, if we consider that the cruising distance is applied to a moving body as the energy supply time available in the system, the same applies to stationary power supply systems that supply power from power generation equipment using internal combustion engines and fuel cells. It is assumed that there are issues.

The present disclosure can be implemented as the following forms.

(1) According to one aspect of the present disclosure, there is provided a power supply system that supplies power to power equipment including an air conditioner. This power supply system includes a power supply unit with a finite amount of power supply, an outside temperature sensor that acquires the outside temperature, and the amount of power remaining in the power supply unit when the air conditioner is not operating. a first continuous operation time calculation unit for calculating a first continuous operation time of the supply system; a 1-coefficient acquiring unit, a time obtained by multiplying a reference time that is a part of the first continuous motion time by the first coefficient, and a remainder obtained by subtracting the reference time from the first continuous motion time, and obtaining the remainder from the first coefficient. a second continuous operation time calculation unit that calculates the sum of the time obtained by multiplying the second coefficient, which is a coefficient with low temperature dependence with respect to the outside air temperature, as the second continuous operation time; and a display device that displays the second continuous operation time as the continuous operation time of the power supply system. According to this form, the portion affected by the outside temperature is the reference time portion, and the rest is not affected by the outside temperature. As a result, even if the outside air temperature fluctuates significantly, the second continuous operation time does not fluctuate significantly, so that the user does not feel uncomfortable.
(2) In the power supply system of the above aspect, the second coefficient may be a fixed coefficient that does not depend on outside air temperature. If the second coefficient is a fixed coefficient, calculation for calculating the second continuous motion time becomes simple.
(3) In the power supply system of the above aspect, the power supply unit includes (a) a battery, (b) a fuel cell mounted with a fuel tank and generating power from the fuel stored in the fuel tank, and (c) a fuel container. and includes either an internal combustion engine that uses the fuel stored in the fuel tank, or a generator that generates power using the output of the internal combustion engine. According to this embodiment, the configuration of the power supply unit can be various modes such as a battery, a fuel cell, an internal combustion engine and a generator, and the like.
(4) In the power supply system of the above aspect, the power supply system is mounted on a mobile body, and the first continuous operation time calculation unit and the second continuous operation time calculation unit calculate the first continuous operation time and Each of the second continuous motion times may be obtained as the cruising range of the moving body. According to this aspect, it is possible to obtain the cruising distance of the moving body.
(5) In the power supply system of the above aspect, the power supply system is installed in a building, and the first continuous operation time calculation unit and the second continuous operation time calculation unit calculate the first continuous operation time and The first continuous operation time may be obtained as a continuous operation time of the power supply system in the building. According to this aspect, the power supply system can also be applied as a stationary power supply system.
(6) In the power supply system of the above aspect, the reference time is a fixed value, and when the reference time is greater than the first continuous operation time, the second continuous operation time calculation unit A distance obtained by multiplying the continuous motion time by the first coefficient may be set as the second continuous motion time. When the reference time is longer than the first continuous motion time, the remainder obtained by subtracting the reference time from the first continuous motion time becomes a negative value. can be calculated with high accuracy.
(7) In the power supply system of the above aspect, the reference time may be a time obtained by multiplying the first continuous operation time by a third coefficient greater than 0% and less than 100%. According to this aspect, since the reference time does not exceed the first continuous motion time, the second continuous motion time can be calculated with high accuracy.
(8) In the power supply system of the above aspect, the first coefficient acquisition unit may acquire a set temperature from the air conditioner, and calculate the first coefficient from the set temperature and the outside air temperature. According to this aspect, it is possible to accurately calculate the second continuous operation time by considering the set temperature of the air conditioner.
(9) According to one aspect of the present disclosure, a moving object having an air conditioner is provided. This moving object includes a first cruising distance calculating unit that calculates a first cruising distance when the air conditioner is not operating, an outside temperature sensor that acquires an outside temperature, and a a first coefficient acquiring unit that acquires a first coefficient indicating a rate at which the cruising range decreases according to the outside temperature; and a distance obtained by multiplying a reference distance that is a part of the first cruising range by the first coefficient. and the remainder obtained by subtracting the reference distance from the first cruising distance multiplied by a second coefficient, which is a coefficient having a lower temperature dependency on the outside temperature than the first coefficient, to obtain a second cruising distance. and a display device that displays the second cruising distance as the cruising distance of the moving object when the air conditioner is operating. According to the form, the part affected by the outside temperature is the reference distance part, and the rest is not affected by the outside temperature. As a result, even if the outside air temperature fluctuates significantly, the second cruising distance does not fluctuate significantly, so that the user does not feel uncomfortable.
(10) In the moving body of the above aspect, the second coefficient may be a fixed coefficient that does not depend on outside air temperature. If the second coefficient is a fixed coefficient, calculation for calculating the second cruising distance becomes simple.
(11) In the mobile body of the above aspect, when the reference distance is greater than the first cruising distance, the second cruising distance calculating unit multiplies the first cruising distance by the first coefficient. may be set as the second cruising distance. When the reference distance is greater than the first cruising distance, the remainder obtained by subtracting the reference distance time from the first cruising distance becomes a negative value. The distance can be calculated with high accuracy.
(12) In the mobile body of the above aspect, the reference distance may be a distance obtained by multiplying the first cruising distance by a third coefficient greater than 0% and less than 100%. According to this aspect, since the reference distance does not exceed the first cruising range, the second cruising range can be calculated with high accuracy.
(13) In the moving body of the above aspect, the first coefficient acquisition unit may acquire a set temperature from the air conditioner, and calculate the first coefficient from the set temperature and the outside air temperature. The power consumption of the air conditioner increases as the difference between the outside air temperature and the set temperature of the air conditioner increases. According to this aspect, it is possible to accurately calculate the second cruising distance by considering the set temperature of the air conditioner.

It is an explanatory view showing a mobile of a 1st embodiment. FIG. 4 is an explanatory diagram showing the configuration of a cruising range calculation unit; It is a graph which shows the relationship between outside temperature and a 1st coefficient. 7 is a flowchart for calculating a cruising distance L when an air conditioner is on, which is executed by a cruising distance calculating unit; FIG. 4 is an explanatory diagram showing the relationship between the remaining fuel of a mobile object and the cruising distance; It is explanatory drawing which shows the mobile body of 2nd Embodiment. It is explanatory drawing which shows the mobile body of 3rd Embodiment. It is an explanatory view showing the electric power supply system of a 4th embodiment. FIG. 4 is an explanatory diagram showing the configuration of a continuous operation time calculation unit;

・First embodiment:
FIG. 1 is an explanatory diagram showing a mobile object 10 according to the first embodiment. The mobile object 10 of the first embodiment is a fuel cell vehicle. The moving body 10 includes a power supply unit 20 , a drive motor 40 , an air conditioner 42 , an auxiliary machine 43 , an outside air temperature sensor 50 , a cruising distance calculation unit 60 , and a display device 70 .

The power supply unit 20 includes a fuel tank 21 , a fuel cell 22 and a remaining fuel sensor 23 . The fuel cell 22 uses the fuel stored in the fuel tank 21 to generate electricity. A remaining fuel sensor 23 acquires the amount Rf of fuel remaining in the fuel tank 21 . The amount of power remaining in the power supply unit 20 , that is, the amount of power that can be supplied by the power supply unit 20 depends on the amount of fuel in the fuel tank 21 . Therefore, the amount of power that can be supplied by the power supply unit 20 can be calculated from the remaining fuel amount Rf remaining in the fuel tank 21, and is limited.

Electric power supplied from the power supply unit 20 is supplied to the drive motor 40 , the air conditioner 42 , and the auxiliary machine 43 . The drive motor 40 drives the tires 44 via the transmission mechanism 41 to make the moving body 10 run. The air conditioner 42 adjusts the indoor temperature and humidity of the moving body 10 . Auxiliaries 43 include electrical equipment used for traveling of the moving body, such as brake lamps, winkers, headlights, wipers, and an instrument panel.

The outside air temperature sensor 50 acquires the outside air temperature Ta outside the moving object. The cruising distance calculation unit 60 calculates the cruising distance L of the moving body 10 using the remaining fuel amount Rf, the outside air temperature Ta, and the ON/OFF state of the air conditioner 42 . The cruising distance L is displayed on the display device 70 provided on the instrument panel. When the air conditioner 42 is operating, it is called "on", and when it is not operating, it is called "off".

FIG. 2 is an explanatory diagram showing the configuration of the cruising range calculation unit 60. As shown in FIG. The cruising range calculating section 60 includes a first cruising range calculating section 61 , a first coefficient acquiring section 62 , a second cruising range calculating section 63 , and a selecting section 64 .

A first cruising distance calculation unit 61 calculates a first cruising distance L1 when the air conditioner 42 is off from the remaining fuel amount Rf remaining in the fuel tank 21 . More specifically, the first cruising range calculation unit 61 calculates the first cruising range L1 by multiplying the remaining fuel amount Rf by the fuel consumption FA (km/l) when the air conditioner 42 is off. . The fuel consumption FA (km/l) when the air conditioner 42 is off is obtained in advance through experiments or the like, and is stored in the memory (not shown) of the first cruising range calculating section 61 .

The first coefficient acquisition unit 62 calculates a first coefficient k1 that is used when the air conditioner 42 is on, from the outside air temperature Ta. When the air conditioner 42 is turned on, the fuel consumption deteriorates, and the degree of deterioration depends on the outside air temperature Ta. The first coefficient k1 is a coefficient indicating the degree of deterioration and is a positive real number less than one. The first coefficient k1 is experimentally obtained as a value corresponding to the outside air temperature Ta and stored in the first coefficient obtaining section 62 . FIG. 3 is a graph showing the relationship between the outside air temperature Ta and the first coefficient k1. When the outside temperature is 25°C, the first coefficient k1 is the largest and is 1, and regardless of whether the outside temperature is higher or lower than 25°C, the first coefficient k1 is the same as when the outside temperature is 25°C. It is smaller than the value 1 of the first coefficient k1.

The second cruising distance calculating unit 63 determines that the air conditioner 42 is on based on the first cruising distance L1 calculated by the first cruising distance calculating unit 61 and the first coefficient k1 calculated by the first coefficient obtaining unit 62. A second cruising range L2 is calculated in the case of . A specific calculation method will be described later.

The selection unit 64 selects the first cruising distance L1 when the air conditioning device 42 is off and the second cruising distance L2 when the air conditioning device 42 is on, as the cruising distance L of the mobile body 10. do.

FIG. 4 is a flowchart for calculating the cruising distance L when the air conditioner 42 is on, which is executed by the cruising distance calculating section 60 . In step S<b>100 , the cruising range calculation unit 60 acquires the remaining fuel amount Rf in the fuel tank 21 from the remaining fuel sensor 23 . In step S110, the cruising range calculating section 60 causes the first cruising range calculating section 61 to calculate the first cruising range L1 when the air conditioner 42 is off from the remaining amount of fuel Rf. As described above, the first cruising distance calculation unit 61 calculates the first cruising distance L1 by multiplying the remaining fuel amount Rf by the fuel consumption FA (km/l) when the air conditioner 42 is off. .

In step S<b>120 , the cruising range calculation unit 60 acquires the outside air temperature Ta from the outside air temperature sensor 50 . In step S130, the cruising range calculation unit 60 causes the first coefficient acquisition unit to acquire the first coefficient k1 from the outside temperature Ta.

In step S130, the cruising range calculating section 60 causes the second cruising range calculating section 63 to calculate the second cruising range when the air conditioner 42 is off from the first cruising range L1 and the first coefficient k1. L2 is calculated by the following formula.
L2=Lst×k1+(L1−Lst)×k2 (1)
In the above formula, Lst is a reference distance that is shorter than the first cruising distance L1, and is the distance that the vehicle can travel while the outside air temperature Ta is substantially constant. Also, k2 is a second coefficient that is a fixed coefficient that does not depend on the outside air temperature Ta, and is a positive real number of 1 or less. The second cruising distance calculation unit 63 calculates the distance obtained by multiplying the reference distance Lst, which is a part of the first cruising distance L1, by the first coefficient k1, and the remainder obtained by subtracting the reference distance Lst from the first cruising distance L1. A second cruising distance L2 is calculated by multiplying the distance by a second coefficient k2, which is a fixed coefficient that does not depend on the outside air temperature Ta. Here, the reference distance Lst and the second coefficient k2 are obtained in advance through experiments and stored in the second cruising distance calculation section 63 . For example, the second coefficient k2 may be calculated using the past distance traveled when the air conditioner 42 was turned off and the amount of fuel consumed during that period. Alternatively, the second coefficient may be obtained by communication from mobile bodies of the same vehicle type.

In step S150, the cruising range calculation unit 60 determines whether the air conditioner 42 is on or off. If it is on, the process proceeds to step S160. transition to In step S160, the cruising range calculating section 60 switches the selecting section 64 to select the cruising range L as the cruising range L2. In step S170, the cruising range calculating unit 60 switches the selecting unit 64 to select the cruising range L as the cruising range L1. In step S180, the cruising range calculation unit 60 causes the display device 70 to display the cruising range L. FIG.

FIG. 5 is an explanatory diagram showing the relationship between the remaining fuel Rf of the mobile body 10 and the cruising distance. A solid line indicates the second cruising distance L2 when the air conditioner 42 is on, a dashed line indicates the first cruising distance L1, and a two-dot chain line indicates the first cruising distance L1 that does not depend on the outside air temperature Ta in Equation (1). 2 terms ((L1−Lst)×k2). The first term of equation (1), which depends on the outside air temperature Ta, is the difference between the solid line and the two-dot chain line. The dashed line is the cruising distance L3 obtained by the method of Patent Document 1, and indicates a distance obtained by multiplying the first cruising distance L1 by a first coefficient k1 that depends on the outside temperature Ta.

The cruising distance L3 indicated by the dashed line fluctuates greatly and may give the user a sense of discomfort. For example, in the example shown in FIG. 5, the cruising distance L3 is the first cruising distance L1 when the remaining amount Rf is Rf0, and the equation (1) indicated by the two-dot chain line when the remaining fuel Rf is Rf1 is smaller than the value of the second term ((L1-Lst)×k2), and the remaining fuel Rf is Rf2, the first cruising distance L1 and the value of the second term of the formula (1) indicated by the two-dot chain line ((L1−Lst)×k2), and the cruising distance L3 fluctuates greatly depending on the outside air temperature Ta. On the other hand, the second cruising distance L2 indicated by the solid line is the first cruising distance L1 indicated by the one-dot chain line and the second term of the formula (1) indicated by the two-dot chain line, regardless of the outside temperature Ta. between and near the first cruising distance L1. That is, even if the outside air temperature Ta fluctuates significantly, the cruising range L2 does not fluctuate significantly. Therefore, the user is less likely to feel uncomfortable.

As described above, according to the first embodiment, the cruising range calculating unit 60 calculates the cruising range from the first cruising range calculating unit 61 that calculates the first cruising range L1 when the air conditioner is off, and the outside air temperature Ta. A first coefficient acquisition unit 62 that acquires a first coefficient k1 that indicates the rate at which the distance decreases; A second cruising distance calculation unit 63 that calculates the second cruising distance L2 as the sum of the remainder obtained by subtracting the reference distance Lst from the cruising distance L1 and the time obtained by multiplying the result by a second coefficient k2 that is a fixed coefficient that does not depend on the outside temperature. Then, when the air conditioner is in operation, the display device 70 is provided to display the second cruising distance L2 as the cruising distance of the mobile body. L2 does not vary greatly. As a result, it is possible to reduce the possibility of giving the user a sense of discomfort.

According to the first embodiment, the less fuel remains in the fuel tank 21, the shorter the first cruising distance L1 and the higher the ratio of the reference distance Lst. As a result, most of the first cruising distance L1 can be traveled at a constant outside air temperature Ta, so accuracy can be improved. That is, the less fuel remains in the fuel tank 21, the higher the accuracy.

Although the second coefficient k2 is a fixed value in the first embodiment, the second coefficient k2 may be a variable between the first coefficient k1 and the value 1, for example k2=(1+k1)/2. In this case, the second coefficient k2 is a coefficient whose degree of deterioration due to the outside air temperature Ta is lower than that of the first coefficient k1. That is, the second coefficient k2 has a lower temperature dependence on the outside air temperature than the first coefficient k1. Further, for example, the second coefficient k2 is 0.85 when the outside temperature Ta is less than 10°C, the second coefficient k2 is 0.9 when the outside temperature Ta is 10°C or more and less than 20°C, and the second coefficient k2 is 0.9 when the outside temperature Ta is 10°C or more and less than 20°C. is 0.95, the second coefficient k2 is 1.0 at an outside temperature Ta of 20°C to 30°C, the second coefficient k2 is 0.9 at an outside temperature Ta of 30°C or higher and below 35°C, and the second coefficient k2 is 0.9 at an outside temperature Ta of 35°C or higher is 0.85, the second coefficient k2 may be a coefficient having a lower temperature dependency on the outside air temperature Ta than the first coefficient k1. Note that if the second coefficient k2 is a fixed value, the computation for calculating the second cruising distance L2 becomes simple.

・Second embodiment:
FIG. 6 is an explanatory diagram showing the moving body 11 of the second embodiment. The moving body 11 is an electric vehicle and includes a power supply section 24 instead of the power supply section 20 . The power supply unit 24 has a battery 25 and a remaining power sensor 26 . The remaining power sensor 26 acquires the power remaining in the battery 25 , that is, the power stored in the battery 25 . This power corresponds to the amount of power Re that the power supply unit 24 can supply.

The cruising range calculating section 60 of the second embodiment has substantially the same configuration as the cruising range calculating section 60 of the first embodiment shown in FIG. 2, but differs in the following points. In the first embodiment, the first cruising distance calculator 61 calculates the first cruising distance L1 from the remaining amount of fuel Rf. A first cruising distance L1 is calculated by dividing by the electricity consumption (km/kWh). Other configurations of the first coefficient acquisition unit 62, the second cruising range calculation unit 63, and the selection unit 64 are the same as the corresponding configurations in the first embodiment. Note that the values of the first coefficient k1, the second coefficient k2, and the reference distance Lst in the second embodiment may differ from the values of the first coefficient k1, the second coefficient k2, and the reference distance Lst in the first embodiment. .

Also in the second embodiment, due to the same action as in the first embodiment, even if the outside air temperature Ta fluctuates significantly, the cruising distance L2 does not fluctuate significantly. As a result, it is possible to reduce the possibility of giving the user a sense of discomfort.

・Third embodiment:
FIG. 7 is an explanatory diagram showing the moving body 12 of the third embodiment. The mobile body 12 is powered by an internal combustion engine, and includes a power supply unit 27 . The power supply unit 27 includes a fuel container 28 , an engine 29 and a remaining fuel sensor 30 . Fuel container 28 may also be referred to as "fuel tank 28". The engine 29 is an internal combustion engine, such as a gasoline engine, a diesel engine, and may include a gas turbine engine and a microturbine engine. The output of engine 29 is reduced through transmission mechanism 41 to drive tires 44 . A part of the output of the engine 29 is input to a generator 46 such as an alternator. The generator 46 generates electric power for operating the air conditioner 42 and the auxiliary machine 43 . Therefore, the power supply unit 27 and the generator 46 together function as a power supply unit. A remaining fuel sensor 30 acquires the remaining fuel Rf in the fuel container 28 .

The configuration of the cruising range calculating section 60 of the third embodiment is the same as the configuration of the cruising range calculating section 60 of the first embodiment shown in FIG. The values of the first coefficient k1, the second coefficient k2, and the reference distance Lst in the third embodiment are different from the values of the first coefficient k1, the second coefficient k2, and the reference distance Lst in the first and second embodiments. can be

As described above, in the third embodiment as well, the cruising range L2 does not fluctuate greatly even if the outside air temperature Ta fluctuates greatly due to the same effects as in the first embodiment and the second embodiment. As a result, it is possible to reduce the possibility of giving the user a sense of discomfort.

In the third embodiment, the air conditioner 42 is described as being operated by electric power generated by the generator 46 , but the compressor of the air conditioner 42 may be driven by the output of the engine 29 .

The third embodiment can also be applied to a hybrid vehicle having a battery and a motor in addition to the internal combustion engine. In this case, the cruising distance is the sum of the cruising distance due to the fuel in the fuel container and the cruising distance due to the remaining power in the battery. Note that the hybrid may be either a parallel hybrid or a serial hybrid.

Although the internal combustion engine has been described as an example in the third embodiment, an external combustion engine such as a Stirling engine or a steam turbine may be used.

In the first embodiment, as can be seen from the formula (1), the second term of the formula (1) has a negative value when the reference distance Lst is greater than the first cruising distance L1. Therefore, when the first cruising distance L1 is equal to or greater than the reference distance Lst, the second cruising distance calculating unit 63 uses the formula (1), and when the first cruising distance L1 is less than the reference distance Lst, The following formula (2) may be used.
L2=L1×k1 (2)
It is possible to improve the calculation accuracy of the second cruising distance L2 when the first cruising distance L1 is smaller than the reference distance Lst.

Similarly in the second embodiment and the third embodiment, when the first cruising range L1 is equal to or greater than the reference distance Lst, the second cruising range calculating unit 63 calculates the first cruising range using equation (1). Equation (2) may be used when the possible distance L1 is less than the reference distance Lst.

In the above-described first embodiment, the second cruising distance calculation unit 63 sets the reference distance Lst to a fixed value, but the reference distance Lst is set to the first cruising distance L1 by a third coefficient greater than 0% and less than 100%. It may be a value multiplied by k3, that is, a fixed ratio of the first cruising distance L1. At this time, a value selected from 10% to 20% may be selected as the third coefficient k3, and the first cruising range L1×k3 may be used as the reference distance Lst. In this case, the first cruising range L1 is never less than the reference distance Lst, so the second cruising range calculator 63 does not need to use equation (2). Similarly, in the second embodiment and the third embodiment, the second cruising range calculator 63 may set the reference distance Lst to be the first cruising range L1×k3.

In the first embodiment, the first coefficient acquisition unit 62 acquires the first coefficient k1 only from the outside air temperature Ta. good. For example, the first coefficient acquisition unit 62 may have a plurality of graphs corresponding to the set temperature Tb of the air conditioner 42 for the graph shown in FIG. In these graphs, the first coefficient k1 is the largest when the outside air temperature Ta and the set temperature Tb of the air conditioner 42 are the same temperature, and whether the outside air temperature Ta is higher or lower than the set temperature Tb, The first coefficient k1 is smaller than the first coefficient k1 when the outside air temperature Ta is the set temperature Tb. Similarly in the second embodiment and the third embodiment, the first coefficient acquisition unit 62 may acquire the first coefficient k1 from the outside air temperature Ta and the set temperature of the air conditioner 42 .

In the first to third embodiments, the mobile bodies 10 to 12 have been described as vehicles, but the mobile bodies 10 to 12 may be aircraft, ships, and locomotives other than vehicles.

- Fourth embodiment:
FIG. 8 is an explanatory diagram showing the power supply system 13 of the fourth embodiment. In the first to third embodiments, the power supply system mounted on a mobile object has been described as an example. supply. The power supply system 13 includes a power supply section 31 , a power device 47 , an air conditioner 48 , an outside air temperature sensor 51 , a continuous operation time calculation section 65 , and a display device 71 .

The power supply unit 31 includes a fuel tank 32 , a fuel cell 33 and a remaining fuel sensor 34 . The fuel cell 33 uses the fuel stored in the fuel tank 32 to generate electricity. A remaining fuel sensor 34 acquires the remaining fuel amount Rf remaining in the fuel tank 32 . The amount of power remaining in the power supply unit 31 , that is, the amount of power that can be supplied by the power supply unit 31 depends on the amount of fuel in the fuel tank 32 . Therefore, the amount of power that can be supplied by the power supply unit 31 can be calculated from the remaining fuel amount Rf remaining in the fuel tank 32, and is limited.

The power supplied from the power supply unit 31 is supplied to the power equipment 47 and the air conditioner 48 . If the building is a general household, the power equipment 47 is, for example, lighting equipment and home appliances. Also, when the building is a factory or an office, the power equipment 47 includes, for example, lighting equipment, computers, office equipment, machine tools, and the like. The air conditioner 48 adjusts the indoor temperature and humidity of the building.

The outside air temperature sensor 51 acquires the outside air temperature Ta outside the moving body. The continuous operation time calculation unit 65 calculates the continuous operation time t of the power supply unit 31 using the remaining fuel amount Rf, the outside air temperature Ta, and the on/off state of the air conditioner 48 . The continuous operating time t is displayed on the display device 71 provided on the control panel (not shown) of the power supply system 13 .

FIG. 9 is an explanatory diagram showing the configuration of the continuous operation time calculation unit 65. As shown in FIG. The continuous motion time calculator 65 includes a first continuous motion time calculator 66 , a first coefficient acquisition unit 67 , a second continuous motion time calculator 68 , and a selector 69 .

The first continuous operation time calculation unit 66 calculates the first continuous operation time t1 when the air conditioner 48 is off from the remaining fuel amount Rf remaining in the fuel tank 32 . More specifically, the first continuous operation time calculation unit 66 calculates the first continuous operation time t1 by multiplying the remaining fuel amount Rf by the fuel consumption rate (hour/l) when the air conditioner 48 is off. do. The fuel consumption rate (hour/l) when the air conditioner 48 is off is obtained in advance through experiments or the like, and is stored in the memory (not shown) of the first continuous operation time calculation section 66 .

The first coefficient acquisition unit 67 calculates a first coefficient k1 that is used when the air conditioner 42 is on, from the outside air temperature Ta.

The second continuous operation time calculation unit 68 determines whether the air conditioner 42 is on based on the first continuous operation time t1 calculated by the first continuous operation time calculation unit 66 and the first coefficient k1 calculated by the first coefficient acquisition unit 67. A second continuous operation time t2 is calculated in the case of . More specifically, the second continuous motion time calculation unit 68 calculates a time obtained by multiplying the reference time tst, which is a part of the first continuous motion time t1, by the first coefficient k1, and the reference time from the first continuous motion time t1. A second continuous operation time t2 is calculated by multiplying the remainder obtained by subtracting tst by a second coefficient k2, which is a fixed coefficient independent of the outside temperature Ta. The reference time tst and the second coefficient k2 are experimentally obtained in advance and stored in the second continuous operation time calculator 68 .

As the continuous operation time t of the power supply system 13, the selection unit 69 selects the first continuous operation time t1 when the air conditioner 42 is off, the second continuous operation time t2 when the air conditioner 42 is on, select.

As described above, in the fourth embodiment as well, due to the same effect as in the first embodiment, even if the outside air temperature Ta fluctuates greatly, the continuous operation time t2 does not fluctuate greatly. As a result, it is possible to reduce the possibility of giving the user a sense of discomfort.

In the fourth embodiment, the power supply system 13 having a fuel cell as the power supply unit 31 has been described as an example. good.

In the first to third embodiments, the moving bodies 10 to 12 were respectively described, and in the fourth embodiment, the stationary power supply system 13 was described as an example. Any system that supplies electric power is applicable.

The present disclosure is not limited to the embodiments described above, and can be implemented in various configurations without departing from the scope of the present disclosure. For example, the technical features of the embodiments corresponding to the technical features in each form described in the outline of the invention are used to solve some or all of the above problems, or Alternatively, replacements and combinations can be made as appropriate to achieve all. Also, if the technical features are not described as essential in this specification, they can be deleted as appropriate.

DESCRIPTION OF SYMBOLS 10... Mobile body 11... Mobile body 12... Mobile body 13... Power supply system 20... Power supply part 21... Fuel tank 22... Fuel cell 23... Remaining fuel sensor 24... Power supply part 25 Battery 26 Remaining power sensor 27 Power supply unit 28 Fuel container (fuel tank) 29 Engine 30 Remaining fuel sensor 31 Power supply unit 32 Fuel tank 33 Fuel cell 34 Remaining fuel sensor 40 Drive motor 41 Transmission mechanism 42 Air conditioner 43 Auxiliary machine 44 Tire 46 Generator 47 Power equipment 48 Air conditioner 50 Outside air temperature sensor , 51... outside air temperature sensor, 60... cruising range calculating section, 61... first cruising range calculating section, 62... first coefficient obtaining section, 63... second cruising range calculating section, 64... selecting section, 65... Continuous operation time calculation unit 66 First continuous operation time calculation unit 67 First coefficient acquisition unit 68 Second continuous operation time calculation unit 69 Selection unit 70 Display device 71 Display device

Claims (13)

A power supply system that supplies power to power equipment including an air conditioner,
a power supply unit with a finite power supply;
an outside temperature sensor for acquiring outside temperature;
a first continuous operation time calculation unit that calculates a first continuous operation time of the power supply system from the amount of power remaining in the power supply unit when the air conditioner is not operating;
a first coefficient acquisition unit that acquires a first coefficient indicating a rate of decrease in continuous operation time according to the outside air temperature when the air conditioner operates;
A time obtained by multiplying a reference time, which is a part of the first continuous operation time, by the first coefficient, and a remainder obtained by subtracting the reference time from the first continuous operation time are temperature dependent on the outside air temperature more than the first coefficient. a second continuous motion time calculation unit that calculates the sum of the time multiplied by the second coefficient, which is a coefficient with low performance, as the second continuous motion time;
a display device that displays the second continuous operation time as the continuous operation time of the power supply system when the air conditioner is in operation;
A power supply system comprising: The power supply system according to claim 1,
The power supply system, wherein the second coefficient is a fixed coefficient that does not depend on outside temperature. The power supply system according to claim 1 or claim 2,
The power supply unit
(a) a battery;
(b) a fuel cell equipped with a fuel tank and generating power from the fuel stored in the fuel tank;
(c) an internal combustion engine equipped with a fuel container and using the fuel stored in the fuel tank; and a generator generating power using the output of the internal combustion engine;
A power supply system, including any of The power supply system according to any one of claims 1 to 3,
The power supply system is mounted on a mobile body,
The power supply system, wherein the first continuous operation time calculation unit and the second continuous operation time calculation unit both obtain the first continuous operation time and the second continuous operation time as a cruising distance of the moving object. The power supply system according to any one of claims 1 to 3,
The power supply system is installed in a building,
The first continuous operation time calculation unit and the second continuous operation time calculation unit both obtain the first continuous operation time and the first continuous operation time as the continuous operation time of the power supply system in the building, power supply system. The power supply system according to any one of claims 1 to 5,
the reference time is a fixed value;
When the reference time is longer than the first continuous motion time, the second continuous motion time calculation unit calculates a distance obtained by multiplying the first continuous motion time by the first coefficient as the second continuous motion time. power supply system. The power supply system according to any one of claims 1 to 5,
The power supply system, wherein the reference time is a time obtained by multiplying the first continuous operation time by a third coefficient greater than 0% and less than 100%. The power supply system according to any one of claims 1 to 7,
The first coefficient acquisition unit
Acquiring a set temperature from the air conditioner,
calculating the first coefficient from the set temperature and the outside air temperature;
, power supply system. A mobile body having an air conditioner,
a first cruising distance calculating unit that calculates a first cruising distance when the air conditioner is not operating;
an outside temperature sensor for acquiring outside temperature;
a first coefficient obtaining unit that obtains a first coefficient that indicates a rate at which the cruising range decreases according to the outside temperature when the air conditioner operates;
A distance obtained by multiplying a reference distance, which is a part of the first cruising distance, by the first coefficient, and a remainder obtained by subtracting the reference distance from the first cruising distance are temperature dependent on the outside air temperature more than the first coefficient. a second cruising distance calculation unit that calculates the sum of the time multiplied by the second coefficient, which is a coefficient with a low degree of cruising speed, as the second cruising distance;
a display device that displays the second cruising distance as the cruising distance of the moving body when the air conditioner is in operation;
A moving body comprising: The mobile object according to claim 9,
The moving body, wherein the second coefficient is a fixed coefficient that does not depend on outside temperature. The mobile object according to claim 9 or 10,
The reference distance is a fixed value,
When the reference distance is greater than the first cruising distance, the second cruising distance calculating unit calculates a distance obtained by multiplying the first cruising distance by the first coefficient as the second cruising distance. Do, mobile. The moving body according to any one of claims 9 to 11,
The mobile body, wherein the reference distance is a distance obtained by multiplying the first cruising distance by a third coefficient greater than 0% and less than 100%. The moving body according to any one of claims 9 to 12,
The first coefficient acquisition unit
Acquiring a set temperature from the air conditioner,
calculating the first coefficient from the set temperature and the outside air temperature;
Mobile.

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