JP7420572B2 - Hydrogen filling system for fuel cell vehicles - Google Patents

Description

The present invention relates to a hydrogen filling system for a fuel cell vehicle.

2. Description of the Related Art Conventionally, there is a fuel cell vehicle equipped with a fuel cell as a generator, which is an electric vehicle that runs by the output of a drive motor that is driven using power supplied from a secondary battery. A fuel cell is a generator that generates electricity by reacting hydrogen gas and oxygen gas (air). In a fuel cell vehicle, hydrogen gas, which is obtained by reducing the pressure of high-pressure hydrogen filled in a hydrogen tank, is supplied to the fuel cell.

Patent Document 1 describes a device for filling a hydrogen tank with high-pressure hydrogen, which transmits a data signal from a communication system installed in a fuel cell vehicle to an external dispenser, and the dispenser fills the hydrogen tank with a flow rate depending on the pressure and temperature. A communication filling ECU is disclosed that can selectively perform communication filling in which high-pressure hydrogen is filled, and non-communication filling in which high-pressure hydrogen is filled at a predetermined flow rate by a dispenser without transmitting a data signal from the communication system. ing.

Japanese Patent Application Publication No. 2013-198294

Here, the communication filling ECU of Patent Document 1 is configured to start or stop in response to opening and closing of a lid of a lid box provided on the side of a vehicle. The time from when the user opens the lid to when the user connects the filling nozzle of the dispenser to the receptacle in the lid box, completes the high-pressure hydrogen filling operation, and closes the lid may vary depending on the user's requirements. If the filling operation takes time, the startup time of the vehicle's hydrogen filling management device that manages filling becomes longer, and the power consumption of the battery that supplies power to the hydrogen filling management device increases.

Further, during filling with high-pressure hydrogen, the hydrogen filling management device may prohibit the vehicle from running. In such a case, if the lid becomes unable to close due to external force, the hydrogen filling management device cannot be stopped even though the filling operation has been completed. As a result, there is a risk that the prohibition of driving the vehicle may not be canceled or that the battery power may be exhausted.

The present invention has been made in view of the above problems, and an object of the present invention is to start or stop a hydrogen filling management device in response to the start and completion of filling high-pressure hydrogen into a hydrogen tank, and to An object of the present invention is to provide a hydrogen filling system for a fuel cell vehicle that can shorten standby time in a state.

In order to solve the above problems, according to one aspect of the present invention, hydrogen filling of a fuel cell vehicle equipped with a hydrogen filling management device that transmits predetermined control information for hydrogen filling to the hydrogen supply station side in an activated state is provided. The system includes a connecting part to which a nozzle on the hydrogen supply station side is connected, a movable part that is displaced by pushing the nozzle toward the connecting part when the nozzle and the connecting part are connected, and the nozzle and the connecting part. a switch that is connected and can be actuated by displacement of a movable part ; a first power supply path that supplies power from a power source of the hydrogen filling management device to the hydrogen filling management device via the switch; and a hydrogen filling management device. a second power supply path for supplying power from the power source to the hydrogen filling management device via the self-power holding relay, and the switch is configured to connect the first power supply path while the movable part is pushed in. It is a momentary switch that closes the switch and opens the first power supply path when the movable part is released from pushing.The hydrogen filling management device is a momentary switch that closes the switch when the nozzle and the connecting part are connected. The hydrogen filling system of a fuel cell vehicle maintains the power supply to the hydrogen filling management device even if the self-power holding relay closes and activates when the switch becomes open. provided.

In the above hydrogen filling system for a fuel cell vehicle, the switch may be provided in an internal space separated from the outside by a movable part.

In the above hydrogen filling system for a fuel cell vehicle, the hydrogen filling management device may stop starting when it detects that the nozzle is removed from the connection part.

As described above, according to the present invention, the hydrogen filling management device can be started or stopped in response to the start and completion of filling high-pressure hydrogen into the hydrogen tank, thereby shortening the standby time in the starting state.

1 is a schematic diagram showing an example of a system configuration of a fuel cell vehicle. 1 is a schematic diagram showing a configuration example of a hydrogen filling system for a fuel cell vehicle according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing a state in which the hydrogen filling management device is activated. It is a schematic diagram which shows the state where the filling nozzle is connected.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Note that, in this specification and the drawings, components having substantially the same functional configurations are designated by the same reference numerals and redundant explanation will be omitted.

<1. Example of system configuration of fuel cell vehicle>
First, a system configuration example of a fuel cell vehicle 1 to which a hydrogen filling system according to an embodiment of the present invention can be applied will be described. FIG. 1 is a schematic diagram showing an example of a system configuration of a fuel cell vehicle 1. As shown in FIG. The fuel cell vehicle 1 includes a hydrogen tank 11 , a fuel cell 13 , a secondary battery 17 , a drive motor 21 , drive wheels 23 , a DC/DC converter 15 , an inverter 19 , and a control device 30 .

For example, the fuel cell vehicle 1 uses a drive motor 21, which is driven using power supplied from the secondary battery 17, as a drive source to obtain the drive torque for the vehicle. Furthermore, when the remaining capacity SOC of the secondary battery 17 decreases, the fuel cell vehicle 1 starts up the fuel cell 13 to generate electricity and charge the secondary battery 17 . Further, in the fuel cell vehicle 1, when the required load of the vehicle is high and the power supplied from the secondary battery 17 alone is insufficient, the fuel cell 13 is activated to supplement the power supplied to the drive motor 21.

The hydrogen tank 11 is filled with high-pressure hydrogen to be supplied to the fuel cell 13. The number of hydrogen tanks 11 is not particularly limited. The number of hydrogen tanks 11 may be one or more.

The fuel cell 13 is controlled by the control device 30 and generates power by reacting hydrogen gas and oxygen gas. The hydrogen tank 11 and the fuel cell 13 are connected via a pipe 12, and hydrogen gas is supplied from the hydrogen tank 11 to the fuel cell 13. Furthermore, air as oxygen gas is supplied to the fuel cell 13 by a compressor or the like (not shown). The fuel cell 13 may be any known fuel cell 13 as long as it has the above functions.

The DCDC converter 15 converts the voltage of the generated power output from the fuel cell 13 into a predetermined DC stage voltage. The power generated by the fuel cell 13 is converted into a voltage while remaining as DC power. Driving of the DCDC converter 15 is controlled by a control device 30. The DCDC converter 15 performs unidirectional power conversion, for example, from the fuel cell 13 side to the secondary battery 17 or inverter 19 side. The DCDC converter 15 may be any known power converter as long as it has the above functions.

The secondary battery 17 is a power supply source for the drive motor 21 and stores power supplied to the drive motor 21 . The secondary battery 17 supplies DC power of a predetermined output voltage (battery voltage) to the inverter 19. Further, the secondary battery 17 can be charged with the power generated by the fuel cell 13 and the regenerated power generated by the drive motor 21 . The power generated by the fuel cell 13 or the regenerated power generated by the drive motor 21 is supplied as DC power to the secondary battery 17 and charged.

Note that the secondary battery 17 may be connected to the DCDC converter 15 and the inverter 19 via a power converter (not shown) such as a DCDC converter. In this case, the power converter may convert the output voltage of the secondary battery 17 into a predetermined DC stage voltage and supply it to the inverter 19. Further, the power converter may convert the voltage of the power generated by the fuel cell 13 and the regenerated power generated by the drive motor 21 (DC stage voltage) into a predetermined charging voltage, and use the voltage to charge the secondary battery 17 .

Further, the secondary battery 17 is connected to an auxiliary battery 75 via a step-down converter 25. The electric power charged in the secondary battery 17 is stepped down by the step-down converter 25 and charged into the auxiliary battery 75 . The electric power stepped down by the step-down converter 25 may be directly supplied to the auxiliary equipment without going through the auxiliary equipment battery 75.

The secondary battery 17 is provided with a battery management system (BMS) 18 . For example, the battery management device 18 calculates the output voltage (battery voltage) and remaining capacity SOC of the secondary battery 17, and outputs a signal indicating these information to the control device 30.

The drive motor 21 is driven by the supplied electric power and outputs a driving torque for the vehicle. The drive motor 21 is, for example, a three-phase AC motor, and is driven (powered) using power supplied from the secondary battery 17 and the fuel cell 13 to generate drive torque. Further, the drive motor 21 may have a function as a generator (regeneration function) that is regeneratively driven during deceleration of the vehicle and generates electricity using the rotational torque of the drive wheels 23. The drive motor 21 may be any known drive motor 21 as long as it has the above function.

Inverter 19 converts DC power supplied from fuel cell 13 or secondary battery 17 into AC power. Further, the inverter 19 converts AC power regenerated by the drive motor 21 into DC power. The driving of the inverter 19 is controlled by a control device 30.

Specifically, when driving the drive motor 21 for power running, the control device 30 controls the inverter 19 to convert DC power to AC power, supplies the AC power to the drive motor 21, and drives the drive motor 21. Further, when regeneratively driving the drive motor 21 , the control device 30 controls the inverter 19 to convert the AC power generated by the drive motor 21 into DC power, and uses the DC power to charge the secondary battery 17 as the charging power for the secondary battery 17 . supply to. The inverter 19 performs two-way power conversion from the fuel cell 13 and secondary battery 17 side to the drive motor 21 side, and from the drive motor 21 side to the secondary battery 17 side. Inverter 19 may be any known power converter as long as it has the above functions.

Note that the number of inverters 19 is not limited to one, and a plurality of power converters may be provided. Further, the number of drive motors 21 connected to one inverter 19 is not limited to one, and a plurality of drive motors 21 may be connected to one inverter 19.

<2. Configuration example of hydrogen filling system>
Next, a configuration example of the hydrogen filling system according to this embodiment will be explained. FIG. 2 is a schematic diagram showing an example of the configuration of the hydrogen filling system 50 according to the present embodiment.

The hydrogen filling system 50 includes a receptacle 61, a switch 73, and a hydrogen filling management device 80. The receptacle 61 has a function as a connection part to which a filling nozzle 91 on the side of an external hydrogen supply station is connected. The receptacle 61 is provided at the tip of a pipe 62 connected to a hydrogen tank (11), not shown. Further, the receptacle 61 includes a check valve (not shown) to prevent high-pressure hydrogen in the pipe 62 from being released to the outside when the filling nozzle 91 is removed. Note that the receptacle 61 or the filling nozzle 91 may be provided with a locking mechanism that can maintain or release the connected state.

The receptacle 61 is provided, for example, in a lid box 55 provided at the rear of the side surface of the vehicle body 53. The lid box 55 is opened or closed to the outside through the opening 57 of the body 53 by opening and closing the lid 51 attached via the hinge 51a. Further, the receptacle 61 is attached to a movable part 63 that is displaceably provided within the lid box 55. The movable portion 63 is configured to be movable in the depth direction with the opening 57 on the front side.

The movable portion 63 shown in FIG. 2 is a plate-shaped movable portion 63, and one or more springs 65 are disposed between the movable portion 63 and the bottom portion 55a of the lid box 55. Both ends of the spring 65 are fixed to the movable part 63 and the bottom 55a of the lid box 55, and the movable part 63 is urged toward the opening 57 by the spring 65. A waterproof means may be provided between the periphery of the movable part 63 and the inner surface of the lid box 55 to prevent rainwater from entering the internal space inside the lid box 55 which is deeper than the movable part 63. Further, a drain port may be provided in the lower part of the space in the lid box 55 closer to the opening 57 than the movable part 63 for draining rainwater or the like that has entered the lid box 55.

By pushing the movable part 63 and the receptacle 61 toward the bottom 55a of the lid box 55, the movable part 63 and the receptacle 61 move toward the bottom 55a against the urging force of the spring 65. On the other hand, by weakening the force pushing the movable portion 63 and the receptacle 61 toward the bottom portion 55a, the movable portion 63 and the receptacle 61 move toward the opening portion 57 due to the biasing force of the spring 65.

The movable part 63 is provided with a vehicle-side communication part 71. The vehicle-side communication unit 71 communicates with a nozzle-side communication unit 93 provided in the filling nozzle 91 on the hydrogen supply station side. The vehicle-side communication unit 71 is, for example, an infrared communication unit, and transmits an infrared signal containing predetermined control information to the nozzle-side communication unit 93 configured to be able to receive infrared light. Note that the communication means and installation position of the vehicle-side communication unit 71 and the nozzle-side communication unit 93 are not particularly limited as long as they are configured to be able to communicate with each other. However, it is preferable that the vehicle-side communication section 71 and the nozzle-side communication section 93 be able to communicate only when the filling nozzle 91 is connected to the receptacle 61.

Further, the movable part 63 is provided with a proximity sensor 72 for detecting the distance between the receptacle 61 or the movable part 63 and the filling nozzle 91. Proximity sensor 72 is used to detect when filling nozzle 91 is removed from receptacle 61. Thereby, removal of the filling nozzle 91 from the receptacle 61 can be detected in a timely manner. The position where the proximity sensor 72 is provided is not limited to the movable part 63, but may be any appropriate position inside the lid box 55.

Note that closing of the lid 51 is detected using an open/close switch that generates an electric signal as the lid 51 opens and closes, a rotation angle sensor that detects the rotation angle of the lid 51 as the lid 51 opens and closes, etc. Then, it may be determined that the filling nozzle 91 has been removed. Thereby, it is possible to reliably detect that the filling nozzle 91 has been removed.

The switch 73 is provided in an internal space on the bottom 55 a side of the lid box 55 that is partitioned by the movable part 63 . In the example shown in FIG. 2, the switch 73 is fixed to the bottom 55a of the lid box 55. In this embodiment, the switch 73 is configured as a momentary switch, and is in a closed state when the movable part 63 is pushed toward the bottom 55a of the lid box 55, while the movable part 63 is located on the opening 57 side. It becomes open state.

The switch 73 is provided in the middle of an electric circuit that connects the hydrogen filling management device 80 and the auxiliary battery 75 as a power source that supplies power to the hydrogen filling management device 80. When the switch 73 is in the closed state, power is supplied from the auxiliary battery 75 to the hydrogen filling management device 80 via the switch 73. On the other hand, when the switch 73 is in the open state, the power supply from the auxiliary battery 75 to the hydrogen filling management device 80 via the switch 73 is cut off.

Further, a stopper 69 is fixed to the bottom 55a of the lid box 55. The stopper 69 defines the maximum movement range of the movable portion 63 that moves toward the bottom portion 55a. The width of the stopper 69 along the depth direction of the lid box 55 corresponds to the width of the switch 73. In other words, the width of the stopper 69 is designed so that when the movable portion 63 is pushed toward the bottom portion 55a and the switch 73 is pressed, the switch 73 is not damaged by the pressing force. The biasing force of the spring 65 or the amount of displacement until the movable part 63 presses the switch 73 is determined by the force when the user connects the filling nozzle 91 to the receptacle 61 in normal operation, causing the movable part 63 to press the switch 73. It is preferable that the setting is such that the button can be pressed.

In addition, if a waterproof means is provided between the movable part 63 and the inner surface of the lid box 55, or if a drain port is provided in the lower part of the space on the opening part 57 side than the movable part 63, the opening Even if rainwater or the like enters into the lid box 55 from the portion 57, the switch 73 is prevented from being exposed to water. Therefore, damage to the switch 73 and electrical leakage can be prevented.

The hydrogen filling management device 80 includes a power supply circuit 81 and a control circuit 83. The hydrogen filling management device 80 is connected to the auxiliary battery 75 via a first power supply path 85 provided with a switch 73 and a second power supply path 87 provided with a self-power retention relay 77. ing. The switch 73 is a momentary switch as described above, while the self-power-holding relay 77 is configured such that after the internal coil is energized and the relay is once closed, the relay does not close unless the coil is de-energized. Keep it closed.

The power supply circuit 81 controls the supply of electric power to the hydrogen filling management device 80 . As described above, when the switch 73 is in the closed state, power is supplied from the auxiliary battery 75 to the hydrogen filling management device 80 via the first power supply path 85. The power supply circuit 81 receives power and starts the hydrogen filling management device 80 .

When the hydrogen filling management device 80 is activated, the control circuit 83 transmits control information including information on the pressure of the hydrogen tank 11 to the nozzle side communication unit via the vehicle side communication unit 71 provided in the receptacle 61 or the movable part 63. Send to 93. The control device of the hydrogen supply station, which has received the pressure information via the nozzle-side communication unit 93, controls the supply of high-pressure hydrogen to the hydrogen tank 11. Specifically, the control device of the hydrogen supply station controls at least one of the pressure and flow rate of high-pressure hydrogen supplied to the hydrogen tank 11.

In addition, the control circuit 83 is configured such that when the switch 73 is closed, power is supplied from the auxiliary battery 75 to the hydrogen filling management device 80 via the first power supply path 85, and the power supply circuit 81 manages hydrogen filling. When the device 80 is activated, the coil of the self-power holding relay 77 is energized to maintain the self-power holding relay 77 in a closed state. When the self-power holding relay 77 is in the closed state, power is supplied from the auxiliary battery 75 to the hydrogen filling management device 80 via the second power supply path 87, so the switch 73 is in the open state. However, the supply of power to the hydrogen filling management device 80 is maintained.

Further, when the filling nozzle 91 is removed from the receptacle 61, the control circuit 83 stops energizing the coil of the self-power-holding relay 77 to open the self-power-holding relay 77. As a result, the supply of power to the hydrogen filling management device 80 is cut off. The control circuit 83 can detect, for example, that the filling nozzle 91 is removed from the receptacle 61 based on the sensor signal of the proximity sensor 72.

Furthermore, when the hydrogen filling management device 80 is activated, the control circuit 83 causes a vehicle control device (30) (not shown) to prohibit the vehicle from running. This can prevent the vehicle from erroneously starting to run while the hydrogen tank 11 is being filled with high-pressure hydrogen. Further, the control circuit 83 allows the vehicle control device (30) to run the vehicle when the filling nozzle 91 is removed. For example, the vehicle control device 30 may be configured to be able to detect an electrical signal indicating that the hydrogen filling management device 80 is in an activated state. As a result, the vehicle control device 30 prohibits execution of control for driving the vehicle while the electric signal is detected, and permits control for driving the vehicle when the electric signal is no longer detected. It can be determined that the

<3. Example of hydrogen filling system operation>
Next, an example of the operation of the hydrogen filling system 50 according to this embodiment will be described with reference to FIGS. 2 to 4.

FIG. 3 is a schematic diagram showing a state in which the filling nozzle 91 is connected to the receptacle 61 and the hydrogen filling management device 80 is activated. When filling the hydrogen tank 11 with high-pressure hydrogen, the user opens the lid 51, connects the filling nozzle 91 to the receptacle 61, and then pushes the movable part 63 to which the receptacle 61 is attached. As a result, the spring 65 disposed between the movable portion 63 and the bottom portion 55a of the lid box 55 is compressed, and the movable portion 63 is displaced, thereby pressing the switch 73, and the switch 73 is brought into a closed state. At this time, the movable part 63 is not displaced beyond the position where it contacts the stopper 69, and the switch 73 is protected.

When the switch 73 is in the closed state, power is supplied from the auxiliary battery 75 to the hydrogen filling management device 80 via the first power supply path 85. Thereby, the power supply circuit 81 of the hydrogen filling management device 80 activates the hydrogen filling management device 80. When the hydrogen filling management device 80 is activated, the control circuit 83 of the hydrogen filling management device 80 energizes the coil of the self-power holding relay 77 to maintain the self-power holding relay 77 in a closed state. Furthermore, the control circuit 83 detects the pressure in the hydrogen tank 11 and transmits a signal indicating information on the pressure to the hydrogen supply station via the vehicle-side communication unit 71. Thereby, the control device of the hydrogen supply station fills the hydrogen tank 11 with high-pressure hydrogen while controlling at least one of the pressure and flow rate of the high-pressure hydrogen.

FIG. 4 is a schematic diagram showing a state in which the pushing operation of the movable part 63 is released after the filling nozzle 91 is connected to the receptacle 61. When the pushing operation of the movable part 63 is released, the movable part 63 is returned to the opening 57 side by the biasing force of the spring 65 disposed between the movable part 63 and the bottom 55a of the lid box 55. As a result, the switch 73 configured as a momentary switch is switched to the open state, and the power supply from the auxiliary battery 75 to the hydrogen filling management device 80 via the first power supply path 85 is cut off.

However, since the self-power holding relay 77 is maintained in the closed state, the power supply from the auxiliary battery 75 to the hydrogen filling management device 80 is maintained via the second power supply path 87, and the hydrogen filling management device 80 is maintained. Communication from the device 80 to the hydrogen supply station and filling of the hydrogen tank 11 with high pressure hydrogen from the hydrogen supply station continues. During this time, the vehicle control device 30 prohibits the vehicle from running.

When filling the hydrogen tank 11 with high-pressure hydrogen from the hydrogen supply station is completed and the filling nozzle 91 is removed from the receptacle 61, the control circuit 83 determines whether the filling nozzle 91 has been removed based on the sensor signal from the proximity sensor 72. is detected, and the power supply to the coil of the self-power holding relay 77 is stopped. As a result, as shown in FIG. 2, both the switch 73 and the self-power holding relay 77 are brought into an open state, and the activation of the hydrogen filling management device 80 is stopped. When the activation of the hydrogen filling management device 80 is stopped, the prohibition of the vehicle from traveling by the vehicle control device 30 is lifted, and the vehicle is allowed to travel.

As described above, in the hydrogen filling system 50 according to the present embodiment, by further pushing the movable part 63 to which the receptacle 61 is attached while the filling nozzle 91 is connected to the receptacle 61, the switch 73 is activated and hydrogen filling is started. The management device 80 starts up. Therefore, even if it takes a long time for the user to connect the filling nozzle 91 to the receptacle 61 after opening the lid 51, the power consumption of the auxiliary battery 75 can be suppressed during that time. . Therefore, it is possible to prevent a situation where the power of the auxiliary battery 75 is exhausted and the vehicle cannot start running. Since this push-in action occurs in conjunction with the user's action to connect the filling nozzle 91 to the receptacle 61, the user performs a special action to activate the hydrogen filling management device 80 without applying any force. be able to.

The hydrogen filling system 50 according to the present embodiment is configured to prohibit the vehicle control device 30 from driving the vehicle while the hydrogen filling management device 80 is activated. Therefore, it is possible to prevent the vehicle from accidentally starting to run while the filling nozzle 91 is connected to the receptacle 61 and is being filled with high-pressure hydrogen. Furthermore, in the hydrogen filling system 50 according to the present embodiment, the activation of the hydrogen filling management device 80 may be stopped by detecting that the filling nozzle 91 is removed from the receptacle 61. Therefore, it is possible to prevent the vehicle from accidentally starting to run while the filling nozzle 91 is connected to the receptacle 61 and is being filled with high-pressure hydrogen.

Further, in the hydrogen filling system 50 according to the present embodiment, the switch 73 is a momentary switch, and the control circuit 83 closes the self-power holding relay 77 when the switch 73 is closed, and then the switch 73 Even when the hydrogen filling management device 80 is in an open state, power supply to the hydrogen filling management device 80 can be maintained. Therefore, by using a momentary switch as the switch 73, it is possible to easily configure the switch 73 that can be operated while the filling nozzle 91 and the receptacle 61 are connected.

In addition, in the hydrogen filling system 50 according to the present embodiment, the proximity sensor 72 is used to detect that the filling nozzle 91 is removed from the receptacle 61, so that the lid 51 can be prevented from closing due to external force. Even if there is, the activation of the hydrogen filling management device 80 can be stopped, so that it is possible to prevent the charging rate of the auxiliary battery 75 from significantly decreasing and the prohibition of driving the vehicle from being canceled.

Although preferred embodiments of the present invention have been described above in detail with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that a person with ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea stated in the claims. It is understood that these also naturally fall within the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1... Fuel cell vehicle, 11... Hydrogen tank, 50... Hydrogen filling system, 51... Lid, 55... Lid box, 55a... Bottom, 61... Receptacle, 63... Movable part, 65... Spring, 71... Vehicle side communication part, 73...Switch, 75...Battery for auxiliary equipment, 77...Self power holding relay, 80...Hydrogen filling management device, 91...Filling nozzle

Claims (3)

In a hydrogen filling system for a fuel cell vehicle equipped with a hydrogen filling management device that transmits predetermined control information for hydrogen filling to a hydrogen supply station in an activated state,
a connection part to which a nozzle on the hydrogen supply station side is connected;
a movable part that is displaced by pushing the nozzle toward the connecting part when the nozzle and the connecting part are connected;
a switch that can be operated when the nozzle and the connecting part are connected and the movable part is displaced ;
a first power supply path that supplies power from the power source of the hydrogen filling management device to the hydrogen filling management device via the switch;
a second power supply path that supplies power from the power source of the hydrogen filling management device to the hydrogen filling management device via a self-power holding relay;
The switch is a momentary switch that closes the first power supply route while the movable part is pushed in, and opens the first power supply route when the movable part is released from being pushed. is a switch,
The hydrogen filling management device is configured such that when the nozzle and the connecting portion are connected and the switch is closed, the self-power holding relay is closed and activated , and then the switch is opened. A hydrogen filling system for a fuel cell vehicle that maintains power supply to the hydrogen filling management device even when The hydrogen filling system for a fuel cell vehicle according to claim 1 , wherein the switch is provided in an internal space separated from the outside by the movable part. 3. The hydrogen filling system for a fuel cell vehicle according to claim 1 , wherein the hydrogen filling management device stops activation when detecting that the nozzle is removed from the connection portion.

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