JP7306133B2 - Power storage equipment for railway vehicles and power storage element monitoring system for railway vehicles - Google Patents

Description

TECHNICAL FIELD The present invention relates to a railway vehicle power storage facility and a railway vehicle power storage element monitoring system.

Energy storage devices are used for industrial stationary applications, such as uninterruptible power supplies and stabilized power supplies, and store power generated by renewable energy or existing power generation systems. It is also used in large-scale storage battery systems. In recent years, not only hybrid vehicles and electric vehicles but also railway vehicles equipped with power storage devices as power sources have been put to practical use.

Patent Literature 1 discloses a power storage control device for an electric vehicle. This power storage control device supplies electric power to the main circuit from the power storage element installed in the electric car to allow the electric car to run even at low speeds in the event that the power supply from the overhead line is interrupted, such as in a non-electrified section. can be made

JP 2010-252524 A

It is known that the storage element deteriorates as it is repeatedly charged and discharged. However, the device of Patent Document 1 cannot remotely monitor the power storage device mounted on the railway vehicle.

SUMMARY OF THE INVENTION An object of the present invention is to provide a railway vehicle power storage facility and a railway vehicle power storage element monitoring system.

A railway vehicle power storage facility mounted on a railway vehicle includes a power storage element, a battery management device that acquires power storage element information regarding the state of the power storage element, and transmits the power storage element information acquired by the battery management device to an external device. and a communication device for

A railway vehicle power storage device monitoring system includes the railway vehicle power storage equipment described above, and a monitoring device that acquires power storage device information transmitted by the railway vehicle power storage equipment.

The battery management device acquires power storage element information regarding the state of the power storage element mounted on the railway vehicle. The battery management device can be, for example, a BMS (Battery Management System). The storage element information includes, for example, the voltage, current, temperature, SOC (State Of Charge), SOH (State Of Health), etc. of the storage element. The storage element information can be obtained repeatedly at appropriate intervals such as 0.1 seconds, 0.5 seconds, and 1 second, for example.

The communication device transmits the storage element information acquired by the battery management device to an external device. A communication device and an external device can communicate with each other via a predetermined wireless communication line. The predetermined wireless communication line may be, for example, a mobile phone line or a communication network such as the Internet. The external device may be a remote monitoring device for the storage element, or may be another communication device connected to the remote monitoring device.

With the above-described configuration, it is possible to transmit the storage element information of the storage element mounted on the railway vehicle to the remote monitoring device, so that the storage element can be remotely monitored.

The railway vehicle power storage equipment includes a storage device that stores power storage element information acquired by the battery management device, and the communication device transmits the power storage element information stored in the storage device.

The storage device stores the storage element information acquired by the battery management device. The storage device may be incorporated within the battery management device, or may be a separate device from the battery management device. Alternatively, the storage device may be integrated with the communication device or may be a separate device from the communication device.

The communication device transmits the storage element information stored in the storage device. The time interval at which the communication device transmits the storage element information can be longer than the time interval at which the battery management device acquires the storage element information. As a result, even if there is a period during which the communication device cannot transmit the storage element information, such as when the train is traveling in tunnels or valleys where radio waves do not reach, the storage element information acquired by the battery management device is stored. It is possible to temporarily store the storage element information in the device and transmit the storage element information stored in the storage device to an external device when the communication device becomes ready for communication.

The railway vehicle power storage equipment includes a power supply control device that supplies power to the battery management device for a predetermined operating time when a vehicle power supply is cut off, and a battery management device that supplies power to the battery management device during the operating time. and a command output device that outputs a command to the battery management device to acquire the

The power control device supplies power to the battery management device for a predetermined operating time when the vehicle power supply is cut off. A vehicle power supply is a power supply facility that supplies required power to a battery management device and a load in a vehicle.

The command output device outputs a command to the battery management device so that the battery management device acquires the storage element information within the operating time. That is, the battery management device can acquire the storage element information within the operating time during which the power supply control device can supply power to the battery management device.

As a result, even if the vehicle power supply is cut off while the battery management device is acquiring the storage element information, power is supplied to the battery management device until the battery management device completes acquisition of the storage element information. Therefore, the storage element information can be prevented from being lost, and the storage element information can be obtained normally.

In the railway vehicle power storage equipment, the power supply control device supplies power to the storage device during the predetermined operating time when the vehicle power source is cut off, and the command output device supplies power to the storage device during the operating time. , the storage device outputs a command to store the storage element information.

The power control device supplies power to the storage device for a predetermined operating time when the vehicle power supply is interrupted. The command output device outputs a command for the storage device to store the storage element information within the operating time. The storage command may be output to the storage device or may be output to a storage control device that controls storage processing of the storage device.

As a result, even if the vehicle power source is shut off while the storage device is storing the storage element information, power continues to be supplied to the storage device until the storage device completes storage of the storage element information. , the storage element information can be prevented from being lost, and the storage element information can be stored normally.

In the railway vehicle power storage equipment, the power supply control device supplies power to the communication device during the predetermined operating time when the vehicle power supply is cut off, and the command output device supplies power to the communication device during the operating time. and outputting a command to the communication device so that the communication device transmits the storage element information.

The power control device supplies power to the communication device for a predetermined operating time when the vehicle power supply is interrupted. The command output device outputs a command to the communication device so that the communication device transmits the storage element information within the operating time.

As a result, even if the power supply for the vehicle is cut off while the communication device is transmitting the storage element information, power continues to be supplied to the communication device until the communication device completes transmission of the storage element information. , the loss of storage element information can be prevented, and the storage element information can be normally transmitted.

Advantageous Effects of Invention According to the present invention, it is possible to remotely monitor an electric storage device mounted on a railway vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an example of a configuration of a railway vehicle power storage element monitoring system; It is a figure which shows an example of a structure of the electrical storage equipment for rail vehicles. FIG. 3 is a diagram showing an example of a bank configuration; FIG. 1 is a schematic diagram showing an example of a configuration of a railway vehicle; FIG. It is a figure which shows an example of a structure of a portable terminal device and a server. 6 is a flowchart showing an example of UPS processing;

Hereinafter, embodiments will be described based on the drawings. FIG. 1 is a schematic diagram showing an example of the configuration of a railway vehicle power storage element monitoring system. The railway vehicle T is equipped with the railway vehicle power storage equipment 100 . The railway vehicle T may be a so-called overhead wire/storage battery hybrid vehicle that uses only a storage element as a drive source for driving a motor in a non-electrified section, or a diesel hybrid vehicle that uses both a diesel engine and a storage element. In this specification, the railway vehicle T is described as being a diesel hybrid vehicle.

As will be described later, the railway vehicle power storage facility 100 includes a communication device 10 . A carrier network 2 such as a mobile phone line includes a plurality of base stations 3, and the communication device 10 can communicate with the base stations 3 within the communication range within the operating section of the railway vehicle T. The mobile terminal device 200 can communicate with the base station 3 of the carrier network 2 . A carrier network 2 is connected to a network 1 such as a public communication network including the Internet. The server 300 as a monitoring device can transmit and receive information to and from the mobile terminal device 200 and the railway vehicle power storage equipment 100 via the network 1 and the carrier network 2 . The use of power storage equipment 100 is not limited to driving. Alternatively, power may be supplied to emergency equipment and auxiliary equipment.

FIG. 2 is a diagram showing an example of the configuration of the railway vehicle power storage equipment 100, and FIG. 3 is a diagram showing an example of the configuration of the bank 40. As shown in FIG. As shown in FIG. 2, the railway vehicle power storage equipment 100 includes a communication device 10, a UPS (Uninterruptible Power Supply) 20 as a power supply control device and a command output device, and a domain management device 30 as an upper battery management device (BMS). , a plurality of banks 40, and the like. As shown in FIG. 3, the bank 40 is formed by connecting a plurality of power storage modules in series. : Cell Monitoring Unit) 43 and the like. Although FIG. 2 illustrates a configuration including a plurality of banks, the railway vehicle power storage equipment 100 may alternatively have a configuration including only one bank having a plurality of power storage modules 42, or may have one bank. A configuration in which only the power storage module 42 is provided may be used.

The communication device 10 includes a control section 11 , a storage section 12 , a first communication section 13 and a second communication section 14 . The control unit 11 is configured by a CPU (Central Processing Unit) or the like, and controls the entire communication device 10 using built-in memories such as ROM (Read Only Memory) and RAM (Random Access Memory).

The storage unit 12 can use, for example, a non-volatile memory such as a flash memory. The storage unit 12 can store required information, for example, information obtained by processing of the control unit 11 .

The first communication unit 13 can communicate with the domain management device 30 and the UPS 20. For example, a communication interface 61 such as a LAN (Local Area Network) can be used. A communication interface may be used.

A communication antenna 15 is connected to the second communication unit 14 . The second communication unit 14 can communicate with the base station 3 of the carrier network 2 .

The domain management device 30 transmits and receives information to and from the battery management device 41 in each bank using a communication interface 62 such as CAN (Controller Area Network). Alternatively, a communication interface other than CAN may be used as the communication interface 62 . In FIG. 2, N banks are connected to each domain management device 30 . N may be 1 or a number other than 1.

Each bank 1 to N includes a plurality of power storage modules 42 , and each power storage module 42 includes a measurement board 43 . Each power storage module 42 has a plurality of power storage cells (power storage elements) connected in series. The measurement substrate 43 can acquire storage element information regarding the state of each storage cell of the storage module 42. The storage element information includes, for example, the voltage, current, temperature, SOC, and SOH of the storage cell. The storage element information can be obtained repeatedly at appropriate intervals such as 0.1 seconds, 0.5 seconds, and 1 second, for example. The storage cell is preferably a secondary battery such as a lead-acid battery and a lithium-ion battery, or a rechargeable battery such as a capacitor. Some of the storage cells may be non-rechargeable primary batteries. It is preferable to use a lithium-ion battery with a high energy density for the railway vehicle power storage equipment 100 .

The battery management device 41 can communicate with the measurement board 43 with a communication function by serial communication, and can acquire the storage element information detected by the measurement board 43 . The battery management device 41 can transmit and receive information to and from the domain management device 30 . The domain management device 30 aggregates the storage element information from the battery management devices 41 of the banks belonging to the domain. The domain management device 30 outputs the aggregated power storage element information to the communication device 10 . In this manner, the communication device 10 can acquire the storage element information regarding the state of the storage cell mounted on the railroad vehicle T via the domain management device 30 .

The storage unit 12 has a function as a storage device, and can store power storage element information acquired via the domain management device 30 . The storage unit 12 may be incorporated in the communication device 10 , may be incorporated in the domain management device 30 , or may be configured as a storage device separate from the communication device 10 and the domain management device 30 .

FIG. 4 is a schematic diagram showing an example of the configuration of a railway vehicle. In addition to the railway vehicle power storage equipment 100, the railway vehicle T includes a diesel generator 151, a motor 152, an inverter device 153, a conversion circuit 154, a vehicle power source 155, an in-vehicle load 156, an auxiliary battery 157, and the like. The railway vehicle power storage equipment 100 includes a communication device 10, a UPS 20, a domain management device 30, a battery management device 41, a bank 40, and the like.

The diesel generator 151, the motor 152, the inverter device 153, the conversion circuit 154, the vehicle power supply 155, and the bank 40 are connected via a power line 71. The power line 71 between the bank 40 and the inverter device 153 includes: A switch 158 is provided. Auxiliary battery 157 is connected to conversion circuit 154 and vehicle power source 155 via switch 159 . Motor 152 may be an AC motor or a DC motor.

By supplying electric power generated by the diesel generator 151 to the motor 152, the motor 152 can drive the railway vehicle T to run. Closing switch 158 allows inverter device 153 to supply power from bank 40 to motor 152 . The inverter device 153 can charge the power storage module 42 in the bank 40 using the regenerated electric power during braking, thereby improving fuel efficiency, reducing noise, and reducing emissions of carbon dioxide gas, nitrogen monoxide gas, nitrogen dioxide gas, and the like. can be reduced.

The conversion circuit 154 can use the electric power generated by the diesel generator 151 to supply a predetermined DC voltage (for example, 100 V) to the vehicle power supply 155 . Conversion circuit 154 can charge auxiliary battery 157 when switch 159 is closed. A vehicle internal load 156 and a UPS 20 are connected to the vehicle power source 155 via a power supply line 72 . Vehicle internal load 156 includes, for example, a lighting fixture, an air conditioner, and the like. The vehicle power source 155 may be cut off at any timing regardless of whether the railroad vehicle T is running or stopped.

The UPS 20 includes a controller 21 as a command output device and a power supply section 22 as a power control device. The power supply unit 22 supplies a predetermined DC voltage to the communication device 10 , the domain management device 30 and the battery management device 41 via the power supply line 72 .

FIG. 5 is a diagram showing an example of the configuration of the mobile terminal device 200 and the server 300. As shown in FIG. The mobile terminal device 200 is a device carried by maintenance personnel of the railway vehicle power storage equipment 100 in the railway vehicle T. For example, the mobile terminal device 200 may be a smartphone or tablet communication terminal, or a desktop or laptop personal computer. There may be. The mobile terminal device 200 includes a control section 201 , a storage section 202 , a communication section 203 , a display section 204 and an operation section 205 .

The control unit 201 can be configured with a CPU, a ROM, a RAM, and the like. The control unit 201 can display a web page provided by the server 300 or the communication device 10 on the display unit 204 based on the web browser program stored in the storage unit 202 .

The storage unit 202 uses a non-volatile memory such as a hard disk or flash memory. The storage unit 202 can store a web browser program and the like.

A communication antenna 206 is connected to the communication unit 203 . The communication unit 203 can transmit and receive information to and from the base station 3 of the carrier network 2 .

The display unit 204 can be configured with a liquid crystal display, an organic EL (Electro Luminescence) display, or the like. The display unit 204 can display an image of a web page provided by the server 300 by the control unit 201 performing processing based on the web browser program.

The operation unit 205 is configured by a touch panel or the like, and can accept operations by maintenance personnel by operating icons or the like displayed on the display unit 204 . The operation unit 205 outputs the received operation to the control unit 201 .

The server 300 includes a control section 301 , a communication section 302 , a monitoring section 303 and a storage section 304 . The server 300 can be composed of one or a plurality of units.

The control unit 301 can be configured by a CPU, a ROM, a RAM, and the like, and controls the entire server 300 using memories such as the built-in ROM and RAM. Control unit 301 executes information processing based on a server program stored in storage unit 304 . The server program includes a web server program, and the control unit 301 functions as a web server that provides web pages to the mobile terminal device 200, accepts logins to web services, and the like. The control unit 301 can collect power storage element information from the communication device 10 as an SNMP (Simple Network Management Protocol) server based on a server program.

The communication unit 302 can transmit and receive information to and from the communication device 10 and the mobile terminal device 200 via the network 1 .

The storage unit 304 can use a non-volatile memory such as a hard disk or flash memory. The storage unit 304 can store power storage element information of the power storage equipment for railway vehicles acquired via the communication unit 302 .

The monitoring unit 303 can generate monitoring information necessary for monitoring the railway vehicle power storage equipment 100 based on the power storage element information of the railway vehicle power storage equipment 100 acquired via the communication unit 302 . The generated monitoring information can be displayed, for example, on the mobile terminal device 200 or a monitoring display device (not shown).

Next, the operation of the railway vehicle power storage equipment 100 will be described.

The domain management device 30 acquires power storage element information regarding the state of the power storage cells mounted on the railway vehicle T. FIG. The storage element information includes, for example, the voltage, current, temperature, SOC, SOH, etc. of the storage element. The storage element information can be obtained repeatedly at appropriate intervals such as 0.1 seconds, 0.5 seconds, and 1 second, for example.

The communication device 10 can transmit the storage element information acquired by the domain management device 30 to at least one of the server 300 and the mobile terminal device 200 as a remote monitoring device.

With the above-described configuration, it is possible to transmit the storage element information of the storage elements mounted on the railway vehicle T to the remote monitoring device, so that the storage elements can be remotely monitored.

The storage unit 12 can store the storage element information acquired by the domain management device 30 . The storage unit 12 may be incorporated in the communication device 10 , may be incorporated in the domain management apparatus 30 , or may be incorporated in a device separate from the communication device 10 and the domain management apparatus 30 .

The communication device 10 can transmit the storage element information stored in the storage unit 12 to at least one of the server 300 and the mobile terminal device 200 . The time interval at which the communication device 10 transmits the storage element information can be longer than the time interval at which the domain management apparatus 30 and the battery management apparatus 41 acquire the storage element information. As a result, even if there is a period during which the communication device 10 cannot transmit the storage element information, such as when the railway vehicle T travels in a tunnel or valley where radio waves do not reach, the storage element information acquired by the domain management apparatus 30 is The information can be temporarily stored in the storage unit 12, and the power storage element information stored in the storage unit 12 can be transmitted to the remote monitoring device when the communication device 10 becomes ready for communication.

The power supply unit 22 of the UPS 20 can supply power to the domain management device 30 and the battery management device 41 for a predetermined operating time when the vehicle power supply 155 is cut off. The predetermined operating time may be a time during which the UPS 20 can supply power.

The controller 21 outputs a command to the domain management device 30 and the battery management device 41 so that the domain management device 30 and the battery management device 41 acquire the storage element information within the operating time. That is, the domain management device 30 and the battery management device 41 can acquire the storage element information within the operating time during which the UPS 20 can supply power to the domain management device 30 and the battery management device 41 .

As a result, even if the vehicle power source 155 is cut off while the domain management device 30 and the battery management device 41 are acquiring the storage element information, the domain management device 30 and the battery management device 41 complete the acquisition of the storage element information. Until then, power continues to be supplied from the UPS 20 to the domain management device 30 and the battery management device 41, so that the storage element information can be prevented from being lost, and the storage element information can be obtained normally.

The power supply unit 22 can supply power to the storage unit 12 for a predetermined operating time when the vehicle power supply 155 is cut off.

The controller 21 outputs a command for the storage unit 12 to store the storage element information within the operating time. The storage command may be output to the storage unit 12 or may be output to the control unit 11 that controls storage processing of the storage unit 12 .

As a result, even if the vehicle power supply 155 is cut off while the storage unit 12 is storing the storage element information, the UPS 20 will keep the storage unit 12 from storing the storage element information until the storage unit 12 completes storage of the storage element information. Since electric power continues to be supplied, loss of storage element information can be prevented, and storage element information can be stored normally.

The power supply unit 22 can supply power to the communication device 10 for a predetermined operating time when the vehicle power supply 155 is cut off.

The controller 21 outputs a command to the communication device 10 so that the communication device 10 transmits the storage element information within the operating time.

As a result, even if the vehicle power source 155 is cut off while the communication device 10 is transmitting the storage element information, the UPS 20 will keep the communication device 10 connected until the communication device 10 completes transmission of the storage element information. Since electric power continues to be supplied, it is possible to prevent loss of storage element information and to transmit the storage element information normally.

FIG. 6 is a flow chart showing an example of processing of the UPS 20. As shown in FIG. The UPS 20 determines whether cutoff of the vehicle power source 155 has been detected (S11), and if cutoff has not been detected (NO in S11), the process of step S11 is continued. When the shutdown of the vehicle power source 155 is detected (YES in S11), the UPS 20 starts power supply operation (S12).

The UPS 20 outputs a storage element information acquisition command to the domain management device 30 and the battery management device 41 (S13), and determines whether or not the storage element information acquisition is completed (S14). Whether or not the acquisition of the storage element information has been completed can be determined based on the acquisition completion signal transmitted by the domain management device 30 and the battery management device 41 that output the acquisition command.

If the acquisition of the storage element information has not been completed (NO in S14), the UPS 20 continues the process of step S14. When the acquisition of the storage element information is completed (YES in S14), the UPS 20 outputs an instruction to save the storage element information to the storage unit 12 (S15), and determines whether or not the storage of the storage element information is completed ( S16). Whether or not storage of the storage element information has been completed can be determined based on a signal indicating completion of storage transmitted by the control unit 11 that controls the storage unit 12 .

If storage of the storage element information has not been completed (NO in S16), the UPS 20 continues the process of step S16. When storage of the storage element information is completed (YES in S16), the UPS 20 outputs a command to transmit the storage element information to the server 300 to the communication device 10 (S17), and determines whether transmission of the storage element information has been completed. is determined (S18). Whether or not the transmission of the storage element information has been completed can be determined based on the signal indicating the completion of transmission transmitted by the communication device 10 .

If transmission of the storage element information has not been completed (NO in S18), the UPS 20 continues the process of step S18. When the transmission of the storage element information is completed (YES in S18), the UPS 20 outputs a shutdown command (S19) and terminates the process. A shutdown command can stop the operation of all or part of the communication device 10, the domain management device 30, and the battery management device 41. FIG.

In FIG. 6, some of the processes in steps S13, S15, and S17 may be omitted.

As described above, according to the present embodiment, it is possible to remotely acquire the storage element information of the storage cells mounted on the railway vehicle. In addition, it is possible to prevent the loss of storage element information, to obtain the storage element information normally, and to remotely monitor the state of the storage cell mounted on the railway vehicle.

The embodiments are illustrative in all respects and are not restrictive. The scope of the present invention is defined by the scope of claims, and includes all modifications within the meaning and scope of equivalence to the scope of claims.

REFERENCE SIGNS LIST 1 network 2 carrier network 3 base station 100 power storage equipment for railway vehicle 10 communication device 11 control unit 12 storage unit 13 first communication unit 14 second communication unit 15 communication antenna 20 UPS
21 controller 22 power supply unit 30 domain management device 40 bank 41 battery management device 42 power storage module 43 measurement substrate 155 vehicle power supply 200 portable terminal device 201 control unit 202 storage unit 203 communication unit 204 display unit 205 operation unit 300 server 301 control unit 302 Communication unit 303 Monitoring unit 304 Storage unit

Claims (4)

A railroad vehicle power storage facility mounted on a railroad vehicle,
a storage element;
a battery management device that acquires storage element information regarding the state of the storage element;
a communication device for transmitting the storage element information acquired by the battery management device to an external device ;
a power supply control device that supplies power to the battery management device for a predetermined operating time when a vehicle power source is cut off;
a command output device that outputs a command to the battery management device so that the battery management device acquires storage element information within the operating time;
a storage device that stores storage element information acquired by the battery management device;
with
The communication device
Electricity storage equipment for railway vehicles that transmits the electric storage element information stored in the storage device . The power control device
supplying power to the storage device for the predetermined operating time when the vehicle power supply is interrupted;
The command output device is
2. The power storage equipment for a railway vehicle according to claim 1 , wherein said storage device outputs a command to store power storage element information during said operating time. The power control device
supplying power to the communication device for the predetermined operating time when the vehicle power supply is interrupted;
The command output device is
3. The power storage equipment for a railway vehicle according to claim 1 , wherein the communication device outputs a command to the communication device so that the power storage element information is transmitted during the operating time. The railway vehicle power storage equipment according to any one of claims 1 to 3 ;
and a monitoring device that acquires the storage element information transmitted by the railway vehicle storage device.

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