JP6369163B2 - Fuel gas filling system and fuel gas filling method - Google Patents

Description

  The present invention relates to a fuel gas filling system and a fuel gas filling method.

  Patent Document 1 discloses a hydrogen gas filling system that fills a fuel tank of a vehicle with hydrogen gas (fuel gas) via a dispenser (filling device) of a hydrogen station. This hydrogen gas filling system is configured such that information such as the filling flow rate of hydrogen gas during filling is displayed on the display unit of the dispenser.

JP 2011-33068 A

  By the way, in such a hydrogen gas filling system, hydrogen gas filling may be stopped for various reasons other than when a predetermined amount of hydrogen gas is filled and filling is completed. In such a case, if only the “filling stop state” is displayed as the hydrogen filling state on the display unit of the dispenser, it is unclear for what reason the filling stop state is caused. Then, even if it looks at the display part of a dispenser, it cannot grasp | ascertain correctly the reason which reached the present hydrogen filling state, and it becomes difficult to take an appropriate response according to a hydrogen filling state.

  The present invention has been made paying attention to such problems, and a fuel gas filling system and a fuel gas filling method capable of accurately grasping the reason (foundation) for reaching the current fuel gas filling state. The purpose is to provide.

According to the present invention, a fuel gas filling system for filling a fuel tank of a vehicle with a fuel gas via a filling device of a fuel gas station is provided. The fuel gas filling system includes: a filling state determination unit that determines a fuel gas filling state of the vehicle by the filling device; a determination basis detection unit that detects a determination basis of the fuel gas filling state; and at least one of the fuel gas filling state and the determination basis Display means for displaying a determination basis on the display unit. A plurality of filling devices are provided in the fuel gas station, a display unit is provided in at least one of the filling device, a control device for controlling the plurality of filling devices, and a vehicle, and the display means displays a display content selection table. Refer to and determine the display location and the display content based on the determination basis.

  According to the present invention, since at least the determination basis is displayed on the display unit among the fuel gas filling state and the determination basis, the determination basis (reason) for reaching the current fuel gas filling state can be accurately grasped. As a result, it is possible to take an appropriate and prompt action according to the fuel gas filling state using the determination basis of the fuel gas filling state.

FIG. 1 is a schematic configuration diagram of a hydrogen filling system according to an embodiment of the present invention. FIG. 2 is a flowchart illustrating the hydrogen filling control according to the present embodiment. FIG. 3 is a flowchart for explaining the contents of the communication filling process. FIG. 4 is a flowchart for explaining the contents of the non-communication filling process. FIG. 5 is a flowchart for explaining the contents of display control. FIG. 6 is a diagram illustrating an example of a display content selection table used in display control. FIG. 7A is a diagram illustrating display contents of the dispenser display unit in a non-communication filling standby state. FIG. 7B is a diagram illustrating display contents of the station side display unit in the non-communication filling standby state. FIG. 7C is a diagram illustrating display contents of the vehicle-side display unit in the non-communication filling standby state. FIG. 8A is a diagram showing the display content of the dispenser display unit in the case of the communication filling normal end state. FIG. 8B is a diagram showing the display contents of the station side display unit in the case of the communication filling normal end state. FIG. 8C is a diagram illustrating display contents of the vehicle-side display unit in the case of the communication filling normal end state. FIG. 9A is a diagram showing the display content of the dispenser display unit in the case of the communication filling abnormal end state. FIG. 9B is a diagram showing the display content of the station side display unit in the case of the communication filling abnormal end state. FIG. 9C is a diagram illustrating display contents of the vehicle-side display unit in the communication filling abnormal end state.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic configuration diagram of a hydrogen filling system 1 according to an embodiment of the present invention.

  The hydrogen filling system 1 is a fuel gas filling system that fills the fuel tank 210 of the vehicle 200 with hydrogen gas as a fuel gas via the dispenser 30 of the hydrogen station 100.

  The vehicle 200 includes a fuel cell that uses hydrogen gas filled in the fuel tank 210 as fuel, and travels by driving a drive motor or the like with the generated power of the fuel cell. The vehicle 200 includes a fuel tank 210, a filling port 211 that constitutes a gas supply unit of the fuel tank 210, a vehicle-side pressure sensor 221 and a vehicle-side temperature sensor 222 for detecting the state in the fuel tank 210, A communication device 230, a vehicle side display unit 240, and a vehicle controller 250 are provided.

  The vehicle side pressure sensor 221 and the vehicle side temperature sensor 222 are each attached to the fuel tank 210. The vehicle-side pressure sensor 221 detects the hydrogen gas pressure Pv in the fuel tank 210. The vehicle side temperature sensor 222 detects the temperature Tv of hydrogen gas in the fuel tank 210.

  A fuel tank 210 is mounted on the vehicle 200, and a filling port 211 as a gas supply unit of the fuel tank 210 is provided on a side portion of the vehicle 200. The filling port 211 is a part to which the filling nozzle 32 of the dispenser 30 of the hydrogen station 100 is connected when filling the fuel tank 210 with hydrogen.

  The vehicle-side communication device 230 is, for example, an infrared communication device, and is provided on the side portion of the vehicle 200 so as to be adjacent to the filling port 211. The vehicle-side communication device 230 is configured to perform infrared communication with the station-side communication device 33 provided in the filling nozzle 32 when the filling nozzle 32 of the dispenser 30 is connected to the filling port 211 of the vehicle 200. Has been. Based on a transmission command from the vehicle controller 250, the vehicle-side communication device 230 provides vehicle-side information necessary for filling the fuel tank 210 with hydrogen gas at a predetermined interval (for example, 100 milliseconds). 33.

  The vehicle side information is composed of a plurality of data, and includes fixed information and fluctuation information. The fixed information includes protocol information and communication software version information necessary for communication between the vehicle-side communication device 230 and the station-side communication device 33, information on the shape of the filling port 211, and the like of the fuel tank 210. Information on volume etc. is included. The fluctuation information includes the pressure and temperature of the hydrogen gas in the fuel tank 210 detected by the vehicle-side pressure sensor 221 and the vehicle-side temperature sensor 222, and filling that indicates whether the fuel tank 210 can be filled with hydrogen gas. Permission information is included.

  The vehicle side display unit 240 is a display that is disposed in front of the driver's seat and displays a vehicle state, a hydrogen filling state, and the like to the driver. Thus, the vehicle side display part 240 is provided so that the driver seated on the driver's seat can visually recognize. The vehicle-side display unit 240 may be a display device that is also used as a navigation system, for example, instead of a display device independent of other systems.

  The vehicle controller 250 is configured as a microcomputer including a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and an input / output interface (I / O interface).

  The vehicle controller 250 includes detection values of the vehicle-side pressure sensor 221 and the vehicle-side temperature sensor 222, detection values of a vehicle-side connection sensor that detects whether or not the filling nozzle 32 is connected to the filling port 211, and the vehicle 200. Detection values of various sensors necessary for the control are input. The vehicle controller 250 outputs a vehicle-side information transmission command to the vehicle-side communication device 230 when there is a possibility of filling the fuel tank 210 with hydrogen gas, such as when the filling nozzle 32 is connected to the filling port 211. To do.

  Next, a hydrogen station 100 that constitutes a part of the hydrogen filling system 1 will be described with reference to FIG.

  The hydrogen station 100 (fuel gas station) is an off-site type station that stores ready-made hydrogen gas that has been transported. The hydrogen station 100 includes a compressor 10, a plurality of storage tanks 20, a dispenser 30, and a control device 300.

  The compressor 10 pressurizes and compresses ready-made hydrogen gas in the transport tank 2 transported by a trailer or the like to each storage tank 20. The pressure of the hydrogen gas in the transport tank 2 is set to 20 MPa, for example.

  The storage tank 20 stores hydrogen gas for filling the fuel tank 210 of the vehicle 200. In the present embodiment, the storage tank 20 includes three tanks: a low pressure storage tank 21, an intermediate pressure storage tank 22, and a high pressure storage tank 23. The storage upper limit pressures of the low pressure storage tank 21, the intermediate pressure storage tank 22, and the high pressure storage tank 23 are set to 40 Mpa, 60 Mpa, and 80 Mpa, respectively. A storage pressure sensor 41-43 for detecting the pressure of hydrogen gas in each storage tank 21-23 is attached to each storage tank 21-23.

  The storage tank 20 is connected to the compressor 10 via the upstream pipe 11 and connected to the dispenser 30 via the downstream pipe 15.

  The upstream pipe 11 is a gas flow path for supplying hydrogen gas compressed and compressed by the compressor 10 to each storage tank 21-23. The upstream pipe 11 includes a main channel 11A and a branch channel 11B. The upstream end of the main flow path 11 </ b> A is connected to the compressor 10. The branch channel 11B branches into three from the downstream end of the main channel 11A, and is connected to the inlet portion of each storage tank 21-23.

  A branch flow path 11B connected to the low-pressure storage tank 21 is provided with a first upstream on-off valve 12 that opens and closes the flow path. The branch flow path 11B connected to the intermediate pressure storage tank 22 is provided with a second upstream on / off valve 13 for opening and closing the flow path, and the branch flow path 11B connected to the high pressure storage tank 23 is opened and closed. A third upstream on-off valve 14 is provided. The opening degree of these on-off valves 12, 13, 14 is controlled by the controller 310 of the control device 300.

  The downstream pipe 15 is a gas flow path for supplying hydrogen gas stored in each storage tank 21-23 to the dispenser 30. The downstream pipe 15 includes a main flow path 15A and a branch flow path 15B. The downstream end of the main flow path 15 </ b> A is connected to the dispenser 30. The branch flow path 15B branches into three from the upstream end of the main flow path 15A and is connected to the outlet of each storage tank 21-23.

  A branch flow path 15B connected to the low-pressure storage tank 21 is provided with a first downstream on-off valve 16 that opens and closes the flow path. The branch flow path 15B connected to the intermediate pressure storage tank 22 is provided with a second downstream on-off valve 17 for opening and closing the flow path, and the branch flow path 15B connected to the high pressure storage tank 23 is opened and closed. A third downstream on-off valve 18 is provided. Furthermore, the main flow path 15A of the pipe 15 is provided with a flow rate adjusting valve 19 for adjusting the flow rate of the hydrogen gas supplied from each storage tank 21-23 to the dispenser 30. The opening degree of these on-off valves 16, 17, 18 and the flow rate adjusting valve 19 is controlled by the controller 310 of the control device 300.

  The main flow path 15A is provided with a flow rate sensor 44 that detects the flow rate of hydrogen gas flowing through the main flow path 15A. The opening degree of the flow rate adjusting valve 19 is feedback controlled based on the detected value of the flow rate sensor 44 so that the flow rate of the hydrogen gas flowing through the main flow path 15A becomes a desired flow rate.

  In the hydrogen station 100, when storing hydrogen gas in the low-pressure storage tank 21, the controller 310 opens only the first upstream opening / closing valve 12 and closes the other opening / closing valves to close the transport tank 2 by the compressor 10. Is supplied to the low-pressure storage tank 21. When storing the hydrogen gas in the intermediate pressure storage tank 22, the controller 310 opens only the second upstream on-off valve 13 and closes the other on-off valves, and closes the other on-off valve 13 so that the compressor 10 supplies the hydrogen gas from the transport tank 2. Is supplied to the intermediate pressure storage tank 22. When storing hydrogen gas in the high-pressure storage tank 23, the controller 310 opens only the third upstream opening / closing valve 14 and closes the other opening / closing valves, and causes the compressor 10 to supply hydrogen gas from the transport tank 2. The high pressure storage tank 23 is supplied.

  The dispenser 30 is a filling device that is selectively connected to each storage tank 21-23 and fills the fuel tank 210 of the vehicle 200 with hydrogen gas in the connected storage tank 20. The dispenser 30 is connected to the low pressure storage tank 21, the intermediate pressure storage tank 22, and the high pressure storage tank 23 in order in accordance with the pressure increase in the fuel tank 210, and uses the differential pressure between the storage tank internal pressure and the fuel tank internal pressure. Then, the fuel tank 210 is filled with hydrogen gas.

  The dispenser 30 includes a filling hose 31, a filling nozzle 32, a station-side communication device 33, a station-side pressure sensor 34, a station-side temperature sensor 35, and a dispenser display unit 36.

  The filling hose 31 is a hose that connects the dispenser body and the filling nozzle 32 and guides hydrogen gas from each storage tank 21-23 to the fuel tank 210 of the vehicle 200.

  The filling nozzle 32 is provided at the tip of the filling hose 31. The filling nozzle 32 is connected to the filling port 211 of the vehicle 200 during hydrogen filling. In the hydrogen station 100, the dispenser 30 is operated by an operator, and the filling nozzle 32 is also connected to the filling port 211 of the vehicle 200 by the operator. The operator who operates the dispenser 30 includes a station-side employee, a driver of the vehicle 200, and the like.

  The station side communication device 33 is an infrared communication device provided in the filling nozzle 32, for example. The station side communication device 33 is configured to perform infrared communication with the vehicle side communication device 230 when the filling nozzle 32 is connected to the filling port 211 of the vehicle 200. The vehicle side information received by the station side communication device 33 is input to the controller 310 of the control device 300.

  The station side pressure sensor 34 and the station side temperature sensor 35 are each attached to the main body of the dispenser 30. The station side pressure sensor 34 detects the pressure of hydrogen gas filled in the fuel tank 210 of the vehicle 200, that is, the station side pressure Ps. The station side temperature sensor 35 detects the temperature of the hydrogen gas filled in the fuel tank 210 of the vehicle 200, that is, the station side temperature Ts.

  The dispenser display unit 36 is a display that displays information related to the state of hydrogen gas filling and the like, and is disposed on the front upper portion of the main body of the dispenser 30. In the present embodiment, the dispenser display unit 36 is a touch panel display so that the target hydrogen filling amount and the like can be input via the dispenser display unit 36. The dispenser display unit 36 is a display device that displays a hydrogen filling state or the like to an operator of the dispenser 30. Thus, the dispenser display part 36 is provided so that the operator who operates the dispenser 30 can visually recognize.

  Although only one dispenser 30 is shown in FIG. 1 so that the hydrogen station 100 can be easily understood, the actual hydrogen station 100 is provided with a plurality of dispensers 30. The plurality of dispensers 30 are controlled and managed by one control device 300 provided in the hydrogen station 100.

  The control device 300 is a device that manages the hydrogen station 100 in an integrated manner, and is disposed in the control room of the hydrogen station 100. The control device 300 includes a controller 310 and a station side display unit 320.

  The controller 310 is configured as a microcomputer including a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and an input / output interface (I / O interface).

  In addition to the detected values of the storage pressure sensor 41-43, the flow rate sensor 44, the station side pressure sensor 34, and the station side temperature sensor 35, the vehicle side information received by the station side communication device 33 is input to the controller 310. The Based on these input signals, the controller 310 performs hydrogen filling control for filling the fuel tank 210 of the vehicle 200 with hydrogen gas and the like.

  The station-side display unit 320 is a display that displays information regarding the filling state of hydrogen gas and the like, and is disposed on the upper front of the main body of the control device 300. The station side display unit 320 is a display device that displays a hydrogen filling state or the like to an operator of the control device 300. As described above, the station side display unit 320 is provided so that an operator (administrator) who operates (manages) the control device 300 can visually recognize the station side display unit 320.

  In the present embodiment, the controller 310 of the control device 300 selectively executes whether the fuel tank 210 of the vehicle 200 is filled with hydrogen gas by communication filling or the fuel tank 210 is filled with hydrogen gas by non-communication filling. To do.

  The communication filling is a method of filling hydrogen gas into the fuel tank 210 of the vehicle 200 from the dispenser 30 using the vehicle side information received by the station side communication device 33. In communication filling, hydrogen gas is filled into the fuel tank 210 while monitoring the temperature Tv in the fuel tank 210 included in the vehicle-side information by performing communication between the vehicle side and the hydrogen station side.

  In communication filling, since hydrogen gas is filled while monitoring the temperature Tv in the fuel tank 210, the supply flow rate of hydrogen gas can be adjusted according to the actual hydrogen gas temperature in the fuel tank 210.

  Therefore, for example, when the temperature Tv in the fuel tank 210 is low, the filling rate can be increased by increasing the supply flow rate of hydrogen gas. On the other hand, when the temperature Tv in the fuel tank 210 approaches the prescribed upper limit temperature, hydrogen filling is continued until the water gas temperature Tv reaches the upper limit temperature while reducing the hydrogen gas supply flow rate. be able to. In communication filling, the temperature Tv in the fuel tank 210 can be used to calculate the hydrogen filling rate SOC of the fuel tank 210, and hydrogen filling can be continued until the hydrogen filling rate SOC reaches the target hydrogen filling rate SOCt. .

  On the other hand, non-communication filling is a method of filling hydrogen gas into the fuel tank 210 of the vehicle 200 from the dispenser 30 without using the vehicle-side information received by the station-side communication device 33. In non-communication filling, communication is not performed between the vehicle side and the hydrogen station side, and hydrogen gas is filled into the fuel tank 210 based only on information on the hydrogen station side.

  In non-communication filling, since the temperature Tv in the fuel tank 210 cannot be used, the hydrogen gas supply flow rate cannot be controlled in accordance with the actual hydrogen gas temperature in the fuel tank 210. Therefore, in order to prevent a rapid increase in the temperature in the fuel tank 210, hydrogen gas can only be supplied at a constant low flow rate. As a result, the filling speed in non-communication filling is slower than the filling speed in communication filling.

  Further, in non-communication filling, the temperature Tv in the fuel tank 210 of the vehicle 200 cannot be used, and therefore the hydrogen filling rate SOC cannot be calculated. Therefore, it is necessary to end the hydrogen filling when the pressure Ps on the hydrogen station side reaches a non-communication filling stop pressure P2 that is determined in advance according to the target hydrogen filling rate SOCt. In order to prevent the temperature Tv in the fuel tank 210 from exceeding the specified upper limit temperature during the hydrogen filling, the non-communication filling stop pressure P2 needs to be set to a low pressure that secures a sufficient margin. Therefore, when non-communication filling is performed, the filling speed is slower than when communication filling is performed, and the amount of hydrogen gas that can be filled in the fuel tank 210 is reduced.

  In the present embodiment, the controller 310 of the hydrogen station 100 performs the communication filling process or the non-communication filling process based on the vehicle side information communicated between the vehicle side communication device 230 and the station side communication device 33. It is configured. Further, the controller 310 is configured to cause the station side display unit 320 and the dispenser display unit 36 to display the hydrogen filling state and the basis for determining the hydrogen filling state. On the other hand, the vehicle controller 250 of the vehicle 200 indicates the hydrogen filling state and the basis for determining the hydrogen filling state to the vehicle side display unit 240 based on the display command from the controller 310 received by the vehicle side communication device 230. It is configured to be displayed.

  Hereinafter, hydrogen filling control and display control by the hydrogen filling system 1 of the present embodiment will be described.

  FIG. 2 is a flowchart illustrating the hydrogen filling control according to the present embodiment. This control is started when the filling nozzle 32 of the dispenser 30 of the hydrogen station 100 is connected to the filling port 211 of the vehicle 200.

  In step 101 (S101), the controller 310 of the hydrogen station 100 converts the hydrogen filling amount input to the dispenser 30 by the operator into the hydrogen filling rate of the fuel tank 210, and reads the converted value as the target hydrogen filling rate SOCt. .

  In S <b> 102, the controller 310 determines whether or not the station side communication device 33 of the dispenser 30 has confirmed reception of the vehicle side information transmitted from the vehicle side communication device 230.

  The controller 310 executes the process of S103 when the reception of the vehicle-side information can be confirmed, that is, when the signal from the vehicle 200 can be detected. On the other hand, for example, if a signal from the vehicle 200 cannot be detected even if a predetermined time has elapsed after the filling nozzle 32 is connected to the filling port 211 of the vehicle 200 and reception of vehicle side information cannot be confirmed, the controller 310 performs the process of S106 and S107 in order to give up execution of communication filling and to implement non-communication filling.

  In S103, the controller 310 determines whether or not the suitability of the vehicle-side information received by the station-side communication device 33 has been confirmed. The conformity confirmation is based on SAE standard J2799, and confirms whether a plurality of pieces of data as vehicle-side information are separated by appropriate delimiters.

  When the information (signal) received by the station-side communication device 33 conforms to the standard, the controller 310 executes the processes of S104 and S105 to perform communication filling. On the other hand, if the information (signal) received by the station-side communication device 33 is incompatible, the controller 310 executes the processes of S106 and S107 in order to give up the communication filling and perform the non-communication filling. .

  When the reception of the vehicle-side information (signal) can be confirmed in S102, and the suitability of the vehicle-side information (signal) can be confirmed in S103, the controller 310 executes display control in S104. In the display control of S104, the fact that the current hydrogen filling state is the communication filling standby state and the reason for reaching the communication filling standby state (judgment basis) are the station side display unit 320, the dispenser display unit 36, and the vehicle side. It is displayed on the display unit 240. Details of the display control will be described later with reference to FIG.

  In S105 after the process of S104, the controller 310 performs a communication filling process for filling the fuel tank 210 of the vehicle 200 with hydrogen gas by communication filling. Details of the communication filling process will be described later with reference to FIG.

  On the other hand, if reception of the vehicle side information (signal) cannot be confirmed in S102, or if it is determined in S103 that the vehicle side information (signal) is incompatible, the controller 310 executes display control in S106. In the display control of S106, the fact that the current hydrogen filling state is the non-communication filling standby state and the reason for reaching the non-communication filling standby state (judgment basis), etc. are as follows. It is displayed on the vehicle side display unit 240. Details of the display control will be described later with reference to FIG.

  In S107 after the process of S106, the controller 310 performs a non-communication filling process of filling the fuel tank 210 of the vehicle 200 with hydrogen gas by non-communication filling. Details of the non-communication filling process will be described later with reference to FIG.

  Details of the communication filling process executed in S105 of FIG. 2 will be described with reference to FIG. FIG. 3 is a flowchart for explaining the contents of the communication filling process.

  In S201, the controller 310 calculates a communication filling stop pressure P1 corresponding to the target hydrogen filling rate SOCt. The controller 310 refers to a preset map for communication filling stop pressure calculation, and is a station detected before hydrogen filling by communication filling is started after the filling nozzle 32 is connected to the filling port 211 of the vehicle 200. The communication filling stop pressure P1 is calculated based on the side pressure Ps and the temperature Ts. The pressure Ps and temperature Ts of the hydrogen gas on the station side used for calculating the communication filling stop pressure P1 correspond to the initial pressure and the outside temperature of the fuel tank 210 of the vehicle 200, respectively.

  In S202, the controller 310 supplies hydrogen from the dispenser 30 to the fuel tank 210 of the vehicle 200, and starts hydrogen filling by communication filling.

  In S203, the controller 310 reads the current hydrogen gas pressure Ps on the station side.

  In S <b> 204, the controller 310 reads the latest vehicle-side information received by the station-side communication device 33. Here, the vehicle-side information includes information such as the pressure Pv and temperature Tv of the hydrogen gas in the fuel tank 210 of the vehicle 200 and the volume of the fuel tank 210 as described above.

  In S205, the controller 310 performs the following (1) based on the station-side hydrogen gas pressure Ps read in S203 and the hydrogen gas temperature Tv in the fuel tank 210 included in the vehicle-side information read in S204. ) To calculate the current hydrogen filling rate SOC of the fuel tank 210.

  In the equation (1), ρ (P, T) represents the gas density when the hydrogen pressure in the fuel tank 210 is P and the hydrogen temperature is T. NWP (Nominal Working Pressure) is a hydrogen pressure in the fuel tank 210 when the fuel tank 210 is fully filled at a reference temperature (15 ° C.).

  In S206, the controller 310 determines whether or not a filling abnormality has occurred during communication filling. When the hydrogen gas temperature Tv in the fuel tank 210 of the vehicle 200 exceeds the upper limit, the hydrogen gas pressure Pv exceeds the upper limit, or when a gas leak occurs in the dispenser 30 of the hydrogen station 100, the controller 310 It is determined that a filling abnormality has occurred. In addition, the controller 310 determines that a filling abnormality has occurred when a problem occurs in the filling system operation, such as when a power failure occurs at the hydrogen station 100 or an earthquake with a predetermined seismic intensity or higher occurs. The filling abnormality means a state deviating from a predetermined state. Hereinafter, a state deviating from the predetermined state is simply referred to as “filling abnormality”.

  When it is determined in S206 that no filling abnormality has occurred, the controller 310 executes the process of S207. On the other hand, when it is determined in S206 that a filling abnormality has occurred, the controller 310 executes the process of S208 without executing the process of S207.

  In S207, the controller 310 determines whether or not the hydrogen filling rate SOC calculated in S205 is equal to or higher than the target hydrogen filling rate SOCt, and whether or not the station-side pressure Ps read in S203 is equal to or higher than the communication filling stop pressure P1. Determine. If at least one of the conditions is satisfied, the controller 310 executes the process of S208 to end the communication filling. On the other hand, when both conditions are not satisfied, the controller 310 executes the processing after S203 to continue the communication filling.

  In S208, the controller 310 stops the supply of hydrogen gas from the dispenser 30 of the hydrogen station 100 to the fuel tank 210 of the vehicle 200, and ends the communication filling.

  In S209 after completion of communication filling, the controller 310 executes display control. In the display control of S209, the fact that the current hydrogen filling state is the communication filling end state and the reason for reaching the communication filling end state (judgment basis) are the station side display unit 320, the dispenser display unit 36, and the vehicle side. It is displayed on the display unit 240. Details of the display control will be described later with reference to FIG.

  Next, details of the non-communication filling process executed in S107 of FIG. 2 will be described with reference to FIG. FIG. 4 is a flowchart for explaining the contents of the non-communication filling process.

  In S301, the controller 310 calculates the non-communication filling stop pressure P2 corresponding to the target hydrogen filling rate SOCt. Specifically, the controller 310 refers to a preset map for non-communication filling stop pressure calculation, and starts hydrogen filling by non-communication filling after the filling nozzle 32 is connected to the filling port 211 of the vehicle 200. The non-communication filling stop pressure P2 corresponding to the target hydrogen filling rate SOCt is calculated on the basis of the hydrogen gas pressure Ps and temperature Ts detected on the station side.

  In S302, the controller 310 supplies hydrogen from the dispenser 30 to the fuel tank 210 of the vehicle 200, and starts hydrogen filling by non-communication filling.

  In S303, the controller 310 reads the current pressure Ps of the hydrogen gas on the station side.

  In S304, the controller 310 determines whether or not a filling abnormality has occurred during non-communication filling. The controller 310 determines that a filling abnormality has occurred, for example, when a gas leak occurs in the dispenser 30 of the hydrogen station 100. In addition, the controller 310 determines that a filling abnormality has occurred when a problem occurs in the filling system operation, such as when a power failure occurs at the hydrogen station 100 or an earthquake with a predetermined seismic intensity or higher occurs.

  If it is determined in S304 that no filling abnormality has occurred, the controller 310 executes the process of S305. On the other hand, when it is determined in S304 that a filling abnormality has occurred, the controller 310 executes the process of S306 without executing the process of S305.

  In S305, the controller 310 determines whether or not the station-side pressure Ps read in S303 is equal to or higher than the non-communication filling stop pressure P2. If the station-side pressure Ps is less than the non-communication filling stop pressure P2, the controller 310 executes the processing from S303 onward in order to continue non-communication filling. On the other hand, if the station-side pressure Ps is equal to or higher than the non-communication filling stop pressure P2, the controller 310 executes the process of S306 to end the non-communication filling.

  In S306, the controller 310 stops the supply of hydrogen gas from the dispenser 30 of the hydrogen station 100 to the fuel tank 210 of the vehicle 200, and ends the non-communication filling.

  In S307 after the end of non-communication filling, the controller 310 executes display control. In the display control in S307, the fact that the current hydrogen filling state is the non-communication filling end state and the reason for reaching the non-communication filling end state (judgment basis), etc. are as follows. It is displayed on the vehicle side display unit 240. Details of the display control will be described later with reference to FIG.

  Details of display control executed in S104 and S106 in FIG. 2, S209 in FIG. 3, and S307 in FIG. 4 will be described with reference to FIGS. FIG. 5 is a flowchart for explaining the contents of display control. FIG. 6 is a diagram illustrating an example of a display content selection table used in display control.

  As shown in FIG. 5, in S401, the station-side controller 310 determines what state the current hydrogen filling state is. In the present embodiment, S401 functions as a filling state determination unit that determines the hydrogen filling state of the vehicle 200 by the dispenser 30.

  The controller 310 determines that the hydrogen filling state is the communication filling standby state when the display control is performed in S104 of FIG. 2, and the hydrogen filling state is the non-communication filling standby state when the display control is performed in S106 of FIG. judge.

  Further, the controller 310 determines that the hydrogen filling state is the communication filling normal end state or the communication filling abnormal end state when the display control is executed in S209 of FIG. The communication filling normal end state means that the communication filling is normally completed, and the communication filling abnormal end state means that the communication filling is ended halfway due to some problem.

  Furthermore, the controller 310 determines that the hydrogen filling state is the non-communication filling normal end state or the non-communication filling abnormal end state when the display control is performed in S307 of FIG. The non-communication filling normal end state means that the non-communication filling has ended normally, and the non-communication filling abnormal end state means that the non-communication filling has ended midway due to some problem.

  In S402, the controller 310 detects (derived) the basis for determining the hydrogen filling state determined in S401, that is, the reason for reaching the current hydrogen filling state. In this embodiment, S402 functions as a determination basis detection unit that detects the determination basis of the hydrogen filling state.

  When it is determined that the hydrogen filling state is the communication filling standby state, the controller 310 detects the vehicle side information (signal) normally in S102 of FIG. 2, and the vehicle state information (signal) in S103 of FIG. Is derived as a basis for determination. On the other hand, if the vehicle-side information (signal) cannot be detected in S102 and it is determined that the hydrogen filling state is the non-communication filling standby state, the controller 310 determines whether or not the non-communication filling standby state is determined. Deriving signal no detection. If it is determined in S103 of FIG. 2 that the vehicle side information (signal) is incompatible and the hydrogen filling state is the non-communication filling standby state, the controller 310 determines the non-communication filling standby state. The signal nonconformity is derived as a basis.

  When it is determined in S208 in FIG. 3 that communication filling is normally completed and the hydrogen filling state is a communication filling normal completion state, the controller 310 reaches the specified amount of hydrogen gas filling amount (filling rate). The fact that the hydrogen filling pressure has reached a predetermined pressure is derived as the basis for determining the communication filling normal end state.

  Note that the basis for determining the normal completion state of communication filling varies depending on the parameter monitored at the time of communication filling. For example, when communication filling ends when the charging fee determined in accordance with the hydrogen filling amount reaches a predetermined amount, the fact that the charging fee has reached the predetermined amount is derived as a basis for determining the normal completion state of communication filling. Is done.

  On the other hand, if a filling abnormality is detected in S206 in FIG. 3 and communication filling is completed in S208, and it is determined that hydrogen filling is in an end state due to a communication filling abnormality, the controller 310 determines the cause of the filling abnormality. To do. As a cause of the communication filling abnormality, when the temperature or pressure of the hydrogen gas in the fuel tank 210 of the vehicle 200 deviates from a predetermined value, or when trouble occurs on the vehicle side, problems on the station side such as gas leakage in the dispenser 30 And detection of problems on the filling system such as the occurrence of power outages.

  If it is determined in S306 in FIG. 4 that the non-communication filling is normally completed and the hydrogen filling state is the non-communication filling normal completion state, the controller 310 determines that the hydrogen gas pressure Ps on the station side is predetermined. The fact that the pressure has been reached is derived as the basis for determining the normal end state of non-communication filling.

  On the other hand, if the filling abnormality is detected in S304 of FIG. 4 and the non-communication filling is completed and it is determined that the hydrogen filling is in an end state due to the non-communication filling abnormality, the controller 310 determines the cause of the filling abnormality, Derived as the basis for determining the non-communication filling abnormal end state. The cause of the non-communication filling abnormality includes detection of a problem on the station side such as a gas leak in the dispenser 30 and detection of a problem on the filling system side such as occurrence of a power failure. In addition, since the vehicle side information is not normally received in the hydrogen station 100 at the time of non-communication filling, detection of the problem on the vehicle side is not included in the cause of the non-communication filling abnormality.

  In S403, the controller 310 refers to the display content selection table in FIG. 6 and determines the display location and display content of information related to hydrogen filling based on the hydrogen filling state determined in S401 and the determination basis detected in S402.

  As shown in FIG. 6, the display content selection table is a list that can determine the display location and display content of information related to hydrogen filling based on at least one of the current hydrogen filling state and the basis for determining the hydrogen filling state. .

  When the hydrogen filling state is the communication filling standby state and the determination basis is the detection of the vehicle state information (signal) and the conformity of the vehicle state information (signal), the controller 310 includes the dispenser display unit 36 of the dispenser 30, and the control device 300. The station-side display unit 320 and the vehicle-side display unit 240 of the vehicle 200 are selected as display locations, and the display unit 36, 320, 240 is determined to display the current hydrogen filling state and the determination basis.

  Next, a case where the hydrogen filling state is a non-communication filling standby state and the determination basis is non-detection or non-conformity of vehicle state information (signal) will be described.

  In this case, the controller 310 selects the dispenser display unit 36 of the dispenser 30, the station side display unit 320 of the control device 300, and the vehicle side display unit 240 of the vehicle 200 as display locations, and displays these display units 36, 320, 240. To display the current hydrogen filling state and the basis for the determination. Furthermore, the controller 310 determines to display a contact instruction to the dealer (corresponding instruction determined according to the determination basis) on the dispenser display unit 36 and the vehicle side display unit 240 in addition to the hydrogen filling state and the determination basis. When the non-communication filling standby state is caused by signal non-detection or signal non-conformity, there is often a problem in the transmission function of the vehicle-side communication device 230 for some reason, so the dispenser display unit 36 and the vehicle-side display unit By displaying a contact instruction to the dealer at 240, it is possible to prompt the driver of the vehicle 200 to perform vehicle inspection or the like.

  When the hydrogen filling state is the communication filling normal completion state and the judgment basis is one of the three grounds (filling amount, filling amount, filling pressure) in FIG. 6, the controller 310 displays the dispenser display unit 36, the station side display. The unit 320 and the vehicle-side display unit 240 are selected as display locations, and the display unit 36, 320, 240 is determined to display the current hydrogen filling state and the determination basis.

  The controller 310 causes the display units 36, 320, and 240 to display specified values such as a filling amount, a filling amount, a filling pressure, and the like that are monitored during filling, and the corresponding actual values at the end of filling. It may be configured as follows.

  When the hydrogen filling state is the communication filling abnormal end state and the judgment basis is one of the three grounds shown in FIG. 6 (vehicle side problem, station side problem, system problem), the controller 310 displays the dispenser display. The unit 36, the station side display unit 320, and the vehicle side display unit 240 are selected as display locations, and it is determined that the display unit 36, 320, 240 displays the current hydrogen filling state and the determination basis thereof.

  When the basis for determining the abnormal state of communication filling is that a problem on the vehicle side has been detected, the controller 310 displays a contact instruction to the dealer on the dispenser display unit 36 and the vehicle side display unit 240 and detects the problem. It is determined that a dispenser individual number or the like that can identify the dispenser 30 is displayed on the station side display unit 320. Not only the contact instruction to the dealer, but also the dispenser individual number is an aspect of the correspondence instruction determined according to the determination basis. When the communication filling abnormal end state is caused due to a problem on the vehicle side, an instruction to contact the dealer is displayed on the dispenser display unit 36 and the vehicle side display unit 240, thereby prompting the driver of the vehicle 200 to perform vehicle inspection or the like. It becomes possible. Further, by displaying the dispenser specifying information on the station side display unit 320, the operator of the control device 300 can confirm whether there is a problem with the dispenser 30 using the control device 300.

  On the other hand, when the basis for determining the communication filling abnormal end state is a problem on the station side or a problem on the system, the controller 310 issues a contact instruction (corresponding instruction determined according to the determination reason) to the station manager. And to display on the station side display unit 320 a dispenser individual number that can identify the dispenser 30 that has detected the problem. When the communication filling abnormal end state occurs due to a problem on the station side or a problem on the system, a contact instruction to the station manager is displayed on the dispenser display unit 36, thereby promptly dealing with the problem occurring at the hydrogen station 100. Is possible.

  Next, a case where the hydrogen filling state is the non-communication filling normal completion state and the filling pressure has reached the specified pressure as the determination basis will be described.

  In this case, the controller 310 selects the dispenser display unit 36, the station-side display unit 320, and the vehicle-side display unit 240 as display locations, and the display units 36, 320, and 240 indicate the current hydrogen filling state and the basis for determination thereof. Is determined to be displayed. Furthermore, the controller 310 determines to display an instruction for confirming the operation of the station side communication device 33 (corresponding instruction determined according to the determination basis) on the dispenser display unit 36.

  The controller 310 may be configured to display the designated pressure value and the actual pressure value at the end of filling on each of the display units 36, 320, and 240.

  On the other hand, when the hydrogen filling state is a non-communication filling abnormal end state and the determination basis is a problem on the station side or a problem on the system, the controller 310 displays the dispenser display unit 36, the station side display unit 320, and the vehicle. The side display unit 240 is selected as a display location, and it is determined that the display unit 36, 320, 240 displays the current hydrogen filling state and the determination basis. Further, the controller 310 displays a contact instruction (response instruction determined according to the determination basis) to the station manager on the dispenser display unit 36, and the dispenser individual number and the like that can identify the dispenser 30 that has detected the problem. It is determined to be displayed on the side display unit 320.

  After determining the display location and display contents of the information related to hydrogen filling as described above, the controller 310 executes display processing in S404 of FIG.

  In S404, the controller 310 causes the dispenser display unit 36 and the station side display unit 320 to display predetermined information based on the items determined in the display content selection table of FIG. Further, the station-side controller 310 communicates with the vehicle controller 250 via the station-side communication device 33 and the vehicle-side communication device 230, and the vehicle controller 250 that has received a command from the controller 310 displays the display content selection table in FIG. Based on the determined matter, predetermined information is displayed on the vehicle-side display unit 240. Note that the station-side controller 310 may directly control the vehicle-side display unit 240 of the vehicle 200 and cause the vehicle-side display unit 240 to display predetermined information.

  In the present embodiment, the above-described S403 and S404 function as a display unit that displays at least the determination basis among the hydrogen filling state and the determination basis on the display units 36, 320, and 240.

  Next, specific examples of display control will be described with reference to FIGS. 7A to 7C, FIGS. 8A to 8C, and FIGS. 9A to 9C.

  7A to 7C are diagrams illustrating an example of display control in a non-communication filling standby state due to signal mismatch.

  FIG. 7A shows the display content of the dispenser display unit 36 of the dispenser 30. FIG. 7B shows the display content of the station side display unit 320 of the control device 300, and FIG. 7C shows the display content of the vehicle side display unit 240 of the vehicle 200.

  As shown in FIG. 7A, the dispenser display unit 36 of the dispenser 30 has four display areas, a filling state display area 36A, a determination reason display area 36B, an actual value display area 36C, and a corresponding instruction display area 36D. have.

  In the non-communication filling standby state due to signal incompatibility, the fact that the non-communication filling standby state is displayed in the filling state display area 36A of the dispenser display unit 36 based on the display content selection table of FIG. 36B indicates that the signal is incompatible. Further, in the corresponding instruction display area 36D of the dispenser display unit 36, an instruction to contact the dealer is displayed.

  As shown in FIG. 7B, the station-side display unit 320 of the control device 300 includes four filling state display areas 320A, a determination basis display area 320B, an actual value display area 320C, and a corresponding instruction display area 320D. It has a display area.

  In the non-communication filling standby state due to the signal nonconformity, based on the display content selection table of FIG. 6, the filling state display area 320A of the station side display unit 320 displays that it is in the non-communication filling standby state, and displays the determination basis. In the area 320B, the signal incompatibility is displayed. Information related to hydrogen filling is not displayed in the actual value display area 320C and the corresponding instruction display area 320D.

  As shown in FIG. 7C, the vehicle-side display unit 240 of the vehicle 200 has four displays of a filling state display area 240A, a determination basis display area 240B, an actual value display area 240C, and a corresponding instruction display area 240D in the display screen. Has an area.

  In the non-communication filling standby state due to signal incompatibility, the fact that the vehicle is in the non-communication filling standby state is displayed in the filling state display area 240A of the vehicle side display unit 240 based on the display content selection table of FIG. In the area 240B, the signal incompatibility is displayed. Furthermore, a contact instruction to the dealer is displayed in the corresponding instruction display area 240D of the vehicle-side display unit 240.

  An example of display control in the case of the communication filling normal end state will be described with reference to FIGS.

  FIG. 8A shows the display content of the dispenser display unit 36 of the dispenser 30. FIG. 8B shows the display content of the station-side display unit 320 of the control device 300, and FIG. 8C shows the display content of the vehicle-side display unit 240 of the vehicle 200.

  When the filling amount (filling rate) reaches the specified amount and the communication filling is completed normally, the communication filling normal display is completed in the filling state display area 36A of the dispenser display unit 36 based on the display content selection table of FIG. The state is displayed, and the determination reason display area 36B displays that the filling amount has reached the specified amount. Further, in the actual value display area 36C of the dispenser display unit 36, the filling amount designated by the driver or the like before the communication filling and the actual value of the hydrogen gas actually filled by the current communication filling are displayed.

  When the filling amount reaches the specified amount and the communication filling is normally completed, the same content as the content displayed on the dispenser display unit 36 is also displayed on the station side display unit 320 and the vehicle side display unit 240. .

  That is, as shown in FIGS. 8B and 8C, the filling state display areas 320A and 240A of the station side display unit 320 and the vehicle side display unit 240 indicate that the communication filling is normally completed, and the station side display unit 320 In addition, the determination basis display areas 320B and 240B of the vehicle-side display unit 240 display that the filling amount has reached the specified amount. Furthermore, in the actual value display areas 320C and 240C of the station side display unit 320 and the vehicle side display unit 240, the filling amount designated by the driver or the like before communication filling, and the hydrogen gas actually filled by the current communication filling The actual value of is displayed.

  Next, an example of display control in the case of the communication filling abnormal end state will be described with reference to FIGS.

  FIG. 9A shows the display content of the dispenser display unit 36 of the dispenser 30. FIG. 9B shows the display content of the station side display unit 320 of the control device 300, and FIG. 9C shows the display content of the vehicle side display unit 240 of the vehicle 200.

  When the communication filling is completed by detecting a problem on the vehicle side, based on the display content selection table of FIG. 6, the filling state display area 36A of the dispenser display unit 36 indicates that the communication filling abnormal end state is present. Then, the fact that a problem on the vehicle side has been detected is displayed in the determination reason display area 36B. Further, in the corresponding instruction display area 36D of the dispenser display unit 36, an instruction to contact the dealer is displayed.

  At this time, as shown in FIG. 9B, the station side display unit 320 displays that the communication filling abnormal end state is displayed in the filling state display area 320A, and a problem on the vehicle side is detected in the determination basis display area 320B. Is displayed. Furthermore, in the corresponding instruction display area 320D of the station side display unit 320, a dispenser individual number that can identify the dispenser 30 that has detected a problem on the vehicle side is displayed.

  On the other hand, as shown in FIG. 9C, the vehicle-side display unit 240 displays that the communication filling abnormal end state is displayed in the filling state display area 240A, and a vehicle-side problem is detected in the determination basis display area 240B. Is displayed. Furthermore, a contact instruction to the dealer is displayed in the corresponding instruction display area 240D of the vehicle-side display unit 240.

  As described with reference to FIGS. 7A to 9C, the dispenser display unit 36, the station side display unit 320, and the vehicle side display unit 240 include at least information on hydrogen filling determined in the display content selection table in FIG. 6. The basis for determining the hydrogen filling state is displayed.

  According to the hydrogen filling system 1 according to the above-described embodiment, the following effects can be obtained.

  The hydrogen filling system 1 is a system that fills the fuel tank 210 of the vehicle 200 with hydrogen gas via the dispenser 30 of the hydrogen station 100 and includes a controller 310 that controls hydrogen filling. The controller 310 determines the hydrogen filling state of the vehicle 200 by the dispenser 30 and detects the determination basis of the hydrogen filling state. Further, the controller 310 causes the display units 36, 320, and 240 to display at least the determination basis among the hydrogen filling state and the determination basis. Thereby, in the hydrogen filling system 1, it is possible to accurately grasp the judgment basis (reason) that has reached the current hydrogen filling state, and take appropriate and prompt action according to the hydrogen filling state using the judgment basis. It becomes possible.

  The display unit for displaying the hydrogen filling state, determination grounds, etc. is visible to at least one of an operator who operates the dispenser 30, an operator who operates the control device 300 that controls the plurality of dispensers 30, and a driver of the vehicle 200. It is configured as follows. More specifically, the display unit includes a dispenser display unit 36 of the dispenser 30, a station side display unit 320 of the control device 300, and a vehicle side display unit 240 of the vehicle 200. As a result, the parties involved in hydrogen filling can accurately grasp the determination grounds that have reached the current hydrogen filling state, and the parties themselves can execute a prompt response.

  Further, the controller 310 of the hydrogen filling system 1 is configured to refer to the display content selection table as illustrated in FIG. 6 and determine the display location and the display content based on the determination basis of the hydrogen filling state. Thus, by using the display content selection table, the display location and the display content can be easily determined, and the control system can be simplified. As a result, it is possible to reduce the calculation load on the controller 310.

  Further, the controller 310 of the hydrogen filling system 1 causes each display unit 36, 320, 240 to display a response instruction (such as a contact instruction to a dealer) determined according to the determination basis in addition to the determination basis. Therefore, it becomes possible for a person who has visually recognized the response instruction to perform an appropriate response according to the hydrogen filling state.

  Furthermore, the controller 310 of the hydrogen filling system 1 is configured to determine the type of hydrogen filling stop state as the hydrogen filling state, and to detect a determination basis corresponding to the type of stop state. The types of filling stop states determined by the controller 310 include a filling standby state, a normal filling end state, and an abnormal filling end state as shown in FIG. As a result, it is possible to accurately grasp for what reason the hydrogen filling state is stopped, and it is possible to take an appropriate and prompt action according to the type of the hydrogen filling stopped state.

  The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

  In this embodiment, although the case where hydrogen gas was used as fuel gas was demonstrated, fuel gas is not restricted to hydrogen gas. The filling system to which the present invention is applied may be configured as a system for filling the vehicle 200 with a fuel gas such as a mixed gas containing hydrogen gas or natural gas. Further, the object to be filled with the fuel gas is not limited to the vehicle.

  Furthermore, although the hydrogen station 100 according to the present embodiment is an off-site type station, it may be an on-site type station that produces and stores hydrogen gas in the hydrogen station 100.

  Furthermore, although the communication method between the station side communication device 33 of the hydrogen station 100 and the vehicle side communication device 230 of the vehicle 200 is an infrared communication method, the communication method is not limited to this. For example, the communication method between the station side communication device 33 and the vehicle side communication device 230 may be a communication method using radio waves or light.

  Furthermore, the controller 310 of the hydrogen station 100 displays the determination basis of the hydrogen filling state (stopped state) on the display units 36, 320, and 240, but displays various information during hydrogen filling on the display units 36, 320, and 240. May be.

  For example, during execution of communication filling, the controller 310 displays that the communication filling is in progress as the hydrogen filling state, and the actual filling amount (filling rate) with respect to the designated amount of hydrogen gas (designated filling rate) as the determination basis. Displayed on the parts 36, 320, and 240. Further, during the non-communication filling, the controller 310 indicates that the non-communication filling is in the hydrogen filling state and the actual filling pressure with respect to the designated filling pressure of the hydrogen gas as the determination basis. 240 is displayed. By configuring the hydrogen filling system 1 in this manner, it is possible to more accurately grasp the state of hydrogen filling.

DESCRIPTION OF SYMBOLS 1 Hydrogen filling system 100 Hydrogen station 30 Dispenser 32 Filling nozzle 33 Station side communication apparatus 36 Dispenser display part 300 Controller 310 Controller 320 Station side display part 200 Vehicle 210 Fuel tank 211 Filling port 230 Vehicle side communication apparatus 240 Vehicle side display part 250 Vehicle controller

Claims (6)

A fuel gas filling system for filling a fuel tank of a vehicle with a fuel gas via a filling device of a fuel gas station,
Filling state determination means for determining a fuel gas filling state of the vehicle by the filling device;
Determination basis detection means for detecting the determination basis of the fuel gas filling state;
Display means for displaying at least the determination basis among the fuel gas filling state and the determination basis;
Equipped with a,
A plurality of the filling devices are provided in the fuel gas station,
The display unit is provided in at least one of the filling device, a control device that controls the plurality of filling devices, and the vehicle,
The display means refers to a display content selection table and displays a display location and a location based on the determination basis.
Decide what to display,
Fuel gas filling system. The fuel gas filling system according to claim 1,
Before Symbol display unit, the operator who operates the filling apparatus, the operator operating the control device for controlling a plurality of the filling device, configured so as to be at least one of the vehicle driver viewing,
Fuel gas filling system. The fuel gas filling system according to claim 1 or 2 ,
In addition to the determination basis, the display means displays a correspondence instruction determined according to the determination basis on the display unit.
Fuel gas filling system. The fuel gas filling system according to any one of claims 1 to 3 ,
The filling state determination means determines the type of fuel gas filling stop state as the fuel gas filling state,
The determination basis detection means detects a determination basis according to the type of fuel gas filling stop state,
Fuel gas filling system. The fuel gas filling system according to claim 4 ,
The filling state determination means determines any of a filling standby state, a filling normal end state, and a filling abnormal end state as the fuel gas filling state,
Fuel gas filling system. A fuel gas filling method for filling a fuel tank of a vehicle with a fuel gas through a plurality of filling devices provided in the fuel gas station,
Determining a fuel gas filling state of the vehicle by the filling device;
Detecting a judgment basis of the fuel gas filling state;
Refer to the display content selection table, determine the display location and display content based on the determination basis,
Displaying at least one of the determination basis among the fuel gas filling state and the determination basis on a display unit provided in at least one of the filling device, a control device for controlling the plurality of filling devices, and the vehicle ,
Fuel gas filling method.

Images