Hydrogen tank system

Abstract

The present invention relates to a hydrogen tank system capable of quickly coping with defects occurring on the hydrogen filling side in a system in which a hydrogen filling pipe and a hydrogen supply pipe are shared. This hydrogen tank system is provided with a hydrogen tank, a hydrogen consumption device, and a hydrogen filling port, in which a pipe from the hydrogen filling port to the hydrogen tank and at least part of a pipe from the hydrogen tank to the hydrogen consumption device are shared. The control device performs control for acquiring the internal pressure of the pipe at the common portion of the pipe after the hydrogen tank is filled with hydrogen and before the hydrogen consumption device is supplied with hydrogen, determining the internal pressure, and reporting the determined internal pressure.

Description

Technical Field

[0001] The present disclosure relates to a hydrogen tank system mounted on a vehicle or the like. Background Art

[0002] Patent Document 1 discloses that in a hydrogen storage unit, a plurality of hydrogen tanks are installed on a manifold, hydrogen is filled into the plurality of tanks via the manifold, and hydrogen is supplied from the plurality of tanks via the manifold.

[0003] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2016-157522

[0004] In order to simplify the paths for hydrogen filling into and hydrogen use from the hydrogen tank, it may be considered to share the piping for both. However, due to the sharing of the piping, there is a concern that when the check valve at the hydrogen filling port fails, the hydrogen in the hydrogen tank may be released from the filling port after hydrogen filling. Summary of the Invention

[0005] In the present disclosure, in view of the above problems, in a system in which a hydrogen filling pipe and a hydrogen supply pipe are shared, a hydrogen tank system that can quickly respond even when an abnormal condition occurs on the hydrogen filling side is provided.

[0006] The present application discloses a hydrogen tank system including a hydrogen tank, a hydrogen consumption device, and a hydrogen filling port, wherein at least a part of the pipe from the hydrogen filling port to the hydrogen tank and the pipe from the hydrogen tank to the hydrogen consumption device is shared, and a control device executes control to obtain the internal pressure of the shared part of the pipe after hydrogen filling into the hydrogen tank and before hydrogen supply to the hydrogen consumption device, and report when the internal pressure becomes equal to or lower than a specified pressure.

[0007] In addition, the present application discloses a hydrogen tank system including a hydrogen tank, a hydrogen consumption device, and a hydrogen filling port, wherein at least a part of the pipe from the hydrogen filling port to the hydrogen tank and the pipe from the hydrogen tank to the hydrogen consumption device is shared, and a control device obtains the pressure P1 at the shared part of the pipe after hydrogen filling into the hydrogen tank and the pressure P2 at the shared part of the pipe after a specified time has elapsed after hydrogen filling into the hydrogen tank and before hydrogen supply to the hydrogen consumption device, and reports when the difference between the pressure P1 and the pressure P2 becomes equal to or greater than a specified value.

[0008] In the above hydrogen tank system, the control device may be configured to close the valve of the hydrogen tank before or simultaneously with reporting.

[0009] According to the present disclosure, in a system in which a hydrogen filling pipe and a hydrogen supply pipe are shared, even when an abnormal condition occurs on the hydrogen filling side, the abnormal condition can be quickly detected and reported, and thus a quick response can be made. Brief Description of the Drawings

[0010] Figure 1 It is a diagram showing an outline of the vehicle 1.

[0011] Figure 2 This is a diagram for explaining the hydrogen filling device 50.

[0012] Figure 3 This is a diagram for explaining the hydrogen tank system 10.

[0013] Figure 4 This is a diagram for explaining the control device 20.

[0014] Figure 5 This is a diagram for explaining the report control S10 related to Mode Example 1.

[0015] Figure 6 This is a diagram for explaining the report control S20 related to Mode Example 2. Detailed implementation manners

[0016] 1. Vehicle

[0017] Figure 1 The outline of the vehicle 1 related to one example of the hydrogen tank system 10 configured according to the present disclosure is schematically shown. Among them, since the hydrogen tank system 10 will be described using other drawings later, Figure 1 only the hydrogen tank 11, the hydrogen consumption device (a fuel cell in this mode) 13, and the hydrogen supply dedicated pipe 16 in the hydrogen tank system 10 are shown.

[0018] The vehicle 1 of this mode is a large vehicle (truck), and includes a chassis 2, a driver's cab 3 disposed at the front of the chassis 2, a cargo bed 4 disposed at the rear of the chassis 2, a wheel unit 5 disposed at the lower part of the chassis 2, an electric motor 6 for driving the vehicle 1, and a hydrogen tank system 10. Among them, a truck is shown here as a large vehicle, but it is not limited thereto, and it can also be applied to buses and the like. In addition, it is not limited to large vehicles, and it can also be applied to ordinary passenger cars.

[0019] The vehicle 1 supplies hydrogen from the hydrogen tank 11 of the hydrogen tank system 10 to the fuel cell 13 as a hydrogen consumption device through the hydrogen supply dedicated pipe 16, and supplies air to the fuel cell 13 from an air acquisition mechanism (not shown). The fuel cell 13 generates electricity by oxidizing hydrogen using the supplied air (oxygen), supplies power to the electric motor 6 through the electric wire 6a to drive the electric motor 6, and the vehicle 1 obtains propulsion force.

[0020] The driving of the electric motor 6 by the fuel cell 13 that uses hydrogen as fuel in such a vehicle 1 is the same as that in the prior art.

[0021] In addition, as will be described later, the hydrogen tank system 10 of the vehicle 1 of this mode receives hydrogen supplied from the hydrogen filling device 50 installed at the hydrogen station and stores the hydrogen in the hydrogen tank 11.

[0022] 2. Hydrogen filling device

[0023] Figure 2 The figure shows a schematic diagram of a hydrogen filling device 50 for supplying hydrogen to a hydrogen tank system 10.

[0024] The hydrogen filling device 50 includes: an accumulator 51 filled with hydrogen; a compressor 52 that compresses (boosts the pressure) the hydrogen released from the accumulator 51 into the pipe; a hydrogen supply pipe 53 that supplies the boosted hydrogen from the compressor 52 to the hydrogen tank system 10 of the vehicle 1; and a control device 54 that controls the hydrogen supply. Hydrogen filling is performed by connecting a nozzle 53a provided at the front end of the hydrogen supply pipe 53 to a receptacle 12, which serves as a hydrogen filling port, of the hydrogen tank system 10 of the vehicle 1.

[0025] One or more hydrogen filling devices 50 are arranged at a hydrogen station that supplies hydrogen. That is, there are hydrogen stations equipped with one hydrogen filling device 50 and hydrogen stations equipped with two or more hydrogen filling devices 50.

[0026] 3. Hydrogen tank system

[0027] As described above, the vehicle 1 in this embodiment is equipped with a hydrogen tank system 10. Figure 3 The configuration of the hydrogen tank system 10 according to one embodiment is schematically shown. As can be seen from Figure 3 In this embodiment, the hydrogen tank system 10 includes a hydrogen tank 11, a hydrogen filling port 12, a fuel cell 13, a dispenser 14, a dedicated hydrogen filling pipe 15, a dedicated hydrogen supply pipe 16, a common pipe 17, an on-off valve 18, a pressure gauge 19, a control device 20, and a reporting device 21.

[0028] Each component will be described below.

[0029] 3.1. Hydrogen tank

[0030] The hydrogen tank 11 is a container for storing hydrogen, and supplies hydrogen from the hydrogen tank 11 to the fuel cell 13, which is a hydrogen-consuming device.

[0031] The specific structure of the hydrogen tank 11 is not particularly limited, and a known structure that can be used as a hydrogen tank can be applied. Typically, the hydrogen tank includes a tank main body T, which is a part for storing hydrogen, and a joint K, which serves as an inlet and outlet for hydrogen of the tank main body T and where the on-off valve 18 is arranged.

[0032] In this embodiment, a plurality (for example, three) of hydrogen tanks 11 are provided, and hydrogen is filled into each hydrogen tank 11. Here, an example of arranging three hydrogen tanks 11 is given, and the reference numerals 11a, 11b, and 11c are used to distinguish them in the drawings. These hydrogen tanks 11 can all have the same capacity, or can include hydrogen tanks with different capacities.

[0033] 3.2. Hydrogen Refueling Port

[0034] The hydrogen refueling port 12 is a component that functions as a hydrogen filling port. By connecting the nozzle 53a of the above-mentioned hydrogen filling device 50, the flow path between the hydrogen filling device 50 and the hydrogen tank system 10 is communicated, and hydrogen flows from the hydrogen supply device 50 to the hydrogen tank 11.

[0035] A check valve (not shown) is arranged at the hydrogen refueling port 12, allowing the flow of hydrogen in the direction of filling hydrogen and restricting the flow of hydrogen in the opposite direction (the direction in which hydrogen flows out of the hydrogen refueling port 12).

[0036] The specific shape of the hydrogen refueling port 12 is not particularly limited, and a shape in a known manner can be used.

[0037] 3.3. Fuel Cell

[0038] The fuel cell 13 is a device that consumes the supplied hydrogen and is one form of the hydrogen consumption device. As described above, the fuel cell 13 receives the supply of hydrogen from the hydrogen tank 11 and the supply of air from an air hole (not shown) to generate electricity. The specific structure of the fuel cell 13 is not particularly limited, and a known structure can be used.

[0039] 3.4. Distributor

[0040] The distributor 14 is a component that connects multiple pipes to branch and merge the flow paths. In this mode, the pipe from the hydrogen refueling port 12 (hydrogen filling dedicated pipe 15), the pipe to the fuel cell 13 (hydrogen supply dedicated pipe 16), and the pipe forming the flow path with the hydrogen tank 11 (common pipe 17) are connected, and all the flow paths are communicated through the distributor 14.

[0041] The specific shape of the distributor 14 is not particularly limited, and a known shape can be used.

[0042] 3.5. Pipe

[0043] The pipe is a pipe that forms the flow path of hydrogen.

[0044] The hydrogen filling dedicated pipe 15 is a pipe that forms the hydrogen flow path between the hydrogen refueling port 12 and the distributor 14 and is a pipe through which hydrogen flows during hydrogen filling.

[0045] The hydrogen supply dedicated pipe 16 is a pipe that forms the hydrogen flow path between the distributor 14 and the fuel cell 13 and is a pipe through which hydrogen flows when supplying hydrogen to the fuel cell 13 for hydrogen consumption (during hydrogen supply). Among them, an on-off valve 16a is arranged in the hydrogen supply dedicated pipe 16, and it is configured to allow and restrict the flow of hydrogen.

[0046] The common pipe 17 is a pipe that forms the hydrogen flow path from the distributor 14 to each of the hydrogen tanks 11 and is a pipe through which hydrogen flows during both hydrogen filling and hydrogen supply.

[0047] These pipes are arranged as described above so that the flow paths merge at the distributor 14.

[0048] 3.6. On-off valve

[0049] The on-off valve 18 is an on / off valve that is only in either the fully open (open) or fully closed (shut-off) state, and in this mode is arranged at the joint K of the hydrogen tank 11. Thus, it is possible to switch between allowing and restricting the entry and exit of hydrogen to / from the hydrogen tank 11.

[0050] In this mode, the on-off valve 18 is a valve that can be quickly opened and closed by the force of an electromagnet, and is an on / off valve that is only in either the fully open (open) or fully closed (shut-off) state. As the on-off valve 18, a known solenoid valve can be used. Moreover, the on-off valve 18 is electrically connected to the control device 20 and is configured to be able to control the on / off based on a signal from the control device 20.

[0051] Among them, in this mode, the on-off valve 18 is in a form arranged at the hydrogen tank 11, but is not limited thereto, and can also be arranged at any position of the common pipe 17.

[0052] 3.7. Pressure sensor

[0053] The pressure sensor 19 is arranged at the distributor 14 and measures the in-flow path pressure (hydrogen pressure) in the distributor 14. That is, it measures the in-flow path pressure of the flow path where the above-mentioned respective flow paths have merged. The type of the specific pressure sensor is not particularly limited as long as a known type is applied.

[0054] The pressure sensor 19 is electrically connected to the control device 20 and is configured to be able to send the pressure measurement result to the control device 20.

[0055] 3.8. Control device

[0056] The control device 20 obtains pressure information from the pressure sensor 19 for calculation, and controls, for example, to report by operating the reporting device 21 or to operate the on-off valve 18 to restrict the flow of hydrogen. As Figure 4 schematically shown, the control device 20 is a processor and includes: a CPU (Central Processing Unit, central arithmetic unit) 20a that performs calculations, a RAM (Random Access Memory) 20b that functions as a working area, a ROM (Read-Only Memory) 20c that functions as a recording medium, a receiving unit 20d that serves as an interface to receive information into the control device 20 whether wired or wirelessly, and a sending unit 20e that serves as an interface to convey information from the control device 20 to the outside whether wired or wirelessly.

[0057] Therefore, the control device 20 is configured to receive information by connecting the pressure sensor 19 to the receiving unit 20d, and connect the on-off valve 18 and the reporting device 21 to the transmitting unit 20e to transmit signals to the on-off valve 18 and the reporting device 21.

[0058] A program for reporting control is stored in the control device 20. This reporting control processes the information from the pressure sensor 19 to determine whether it is in an abnormal state and operates the on-off valve 18 and the reporting device 21. In the control device 20, the CPU 20a, RAM 20b, and ROM 20c as hardware resources cooperate with the program. Specifically, the CPU 20a determines whether it is in an abnormal state based on the pressure information from the pressure sensor 19 by executing the computer program recorded in the ROM 20c in the RAM 20b that functions as a working area, and operates the on-off valve 18 and the reporting device 21 to perform appropriate reporting control. The information obtained or generated by the CPU 20a is stored in the RAM 20b. In addition, a recording medium can be additionally equipped inside or outside the control device 20 to record the program and various data here.

[0059] In this mode, the control device 20 obtains information from the pressure sensor 19 via the receiving unit 20d. Then, based on the obtained data, the control device 20 uses databases and the like recorded in the ROM 20c and other recording media and executes the computer programs recorded in the ROM 20c and other recording media to perform arithmetic processing, and records the results in the RAM 32 and the recording medium. The specific content of the reporting control performed by the control device 20 will be described later. Based on the determination result, a signal is sent from the transmitting unit 20e to the on-off valve 18 and the reporting device 21, and the on-off valve 18 and the reporting device 21 operate according to this signal.

[0060] Such a control device 20 can typically be constituted by a computer.

[0061] 3.9. Reporting Device

[0062] The reporting device 21 is a device that outputs necessary information to the outside. The specific method of reporting is not particularly limited. For example, display of sound, light, text, patterns, and combinations thereof can be cited. As a device, it is a speaker for sound, lighting for light, and a display for display, etc.

[0063] The reporting device 21 is electrically connected to the control device 20 and is configured to receive a signal from the control device 20 to perform the above reporting.

[0064] 4. Normal-Time Control

[0065] Before explaining the case where reporting control is required, the normal operation of the hydrogen tank system 10 will be explained.

[0066] 4.1. Filling of the hydrogen tank

[0067] The hydrogen is filled into the hydrogen tank 11 by connecting the nozzle 53a provided at the front end of the hydrogen supply pipe 53 of the hydrogen filling device 50 described above to the hydrogen filling port 12 which is the hydrogen filling port of the hydrogen tank system 10 provided in the vehicle 1 and supplying hydrogen from the hydrogen filling device 50.

[0068] Thus, as Figure 3 indicated by the arrow I in, the hydrogen passes through the hydrogen filling dedicated pipe 15, the distributor 14 and each common pipe 17 from the hydrogen filling port 12, and is filled into each hydrogen tank 11 through the on-off valve 18.

[0069] Among them, at this time, the on-off valve 16a of the hydrogen supply dedicated pipe 16 is closed to restrict the flow of hydrogen in the hydrogen supply dedicated pipe 16. The closing of the on-off valve 16a can be performed by the control device 20. At this time, the on-off valve 16a is electrically connected to the control device 20.

[0070] 4.2. Consumption of hydrogen by the hydrogen consumption device

[0071] When hydrogen is consumed in the case of generating electricity during the use of the fuel cell 13 and moving the vehicle with this electricity, the on-off valve 16a is opened to supply hydrogen to the fuel cell 13. Specifically, as Figure 3 indicated by the arrow O in, hydrogen flows out from each hydrogen tank 11 (from this hydrogen tank 11 in the case of using 1 hydrogen tank 11 selected from a plurality of hydrogen tanks 11), and is supplied to the fuel cell 13 through the common pipe 17, the distributor 14, and the hydrogen supply dedicated pipe 16.

[0072] In addition, since a check valve is arranged at the hydrogen filling port 12 as described above, hydrogen generally does not leak to the outside from the hydrogen filling port 12.

[0073] 4.3. Effects, etc.

[0074] In this way, according to the hydrogen tank system 10 of this mode, since at least a part (common pipe 17) of the pipe for filling hydrogen and the pipe for supplying hydrogen is shared, the system can be simplified. This also contributes to the lightening of the vehicle, etc.

[0075] 5. Report control

[0076] Here, when performing the above-mentioned "hydrogen consumption by the hydrogen consumption device", for example, when there is a defect in the check valve at the hydrogen filling port 12 or when the seal at the hydrogen filling port 12 is damaged, a part of the hydrogen flows back from the dispenser 14 through the dedicated hydrogen filling pipe 15 to the hydrogen filling port 12, resulting in a problem of external leakage. Reporting control is a control that promptly reports the situation when such a problem occurs to facilitate a smooth response. The following describes an example of the method. These controls are performed by the above-mentioned control device 20.

[0077] Among them, it is preferable that such reporting control is performed after the above-mentioned "filling of the hydrogen tank" and before the "hydrogen consumption by the hydrogen consumption device" (before the on-off valve 16a is opened).

[0078] 5.1. Example 1

[0079] Figure 5 The flow of the reporting control S10 related to Example 1 is shown. The following describes each process.

[0080] 5.1.1. Process S11

[0081] In Process S11, the counting of the start time begins. The timing of the start is not particularly limited, and examples include immediately after the filling of hydrogen into the hydrogen tank 11 is completed and before the supply of hydrogen to the fuel cell 13 (before the on-off valve 16a is opened).

[0082] 5.1.2. Process S12

[0083] In Process S12, it is determined whether a specified time has elapsed since Process S11. If the specified time has elapsed, it is regarded as "yes" and the process proceeds to Process S13. If the specified time has not elapsed, it is regarded as "no" and the counting of time continues.

[0084] Here, the specified time depends on the time required for the vehicle's system to start. Considering the general time required for the recent automotive system to start, it is appropriate to assume within a few seconds.

[0085] 5.1.3. Process S13

[0086] In Process S13, the control device 20 obtains the pressure measurement value from the pressure sensor 19.

[0087] 5.1.4. Process S14

[0088] In process S14, it is determined whether the pressure obtained in process S13 is above a threshold value. Here, the specific value of the threshold is not particularly limited, and it can be a level at which, although hydrogen is not consumed after hydrogen filling, the pressure is considered not to decrease unnaturally. The specific value is not particularly limited. For example, if the pressure is such that it is 10 MPa less than the maximum pressure after filling the hydrogen tank 11 (the pressure called a full tank in normal hydrogen filling, the pressure set during filling), it is obvious that an abnormality (hydrogen leakage or a pressure sensor failure) can be considered.

[0089] Since if the pressure is above the threshold value in process S14, no malfunction such as leakage has occurred, it is regarded as "yes" and the reporting control S10 is ended.

[0090] When the pressure is below the threshold value in process S14, since leakage may have occurred, it is regarded as "no" and the process proceeds to process S15.

[0091] 5.1.5. Process S15

[0092] In process S15, it is reported by the reporting device 21 that leakage may have occurred. This is done by the control device 20 sending a signal of this situation to the reporting device 21. Additionally, the opening / closing valve 18 can be closed either at the same time or before this. Thereby, more hydrogen leakage from the hydrogen filling port 12 can be prevented. The closing of the opening / closing valve 18 is also done by the control device 20 sending a signal of this situation to the opening / closing valve 18.

[0093] 5.1.6. Effects, etc.

[0094] According to the reporting control S10, in the hydrogen tank system 10 using the common pipe 17, even if there is a malfunction such as hydrogen leakage from the hydrogen filling port or the like, the situation can be reported promptly to facilitate a smooth response.

[0095] If the opening / closing valve 18 is closed simultaneously, more leakage can also be prevented from occurring.

[0096] 5.2. Example 2

[0097] Figure 6 The flow of the reporting control S20 related to Example 2 is shown. Each process will be described below.

[0098] 5.2.1. Process S21

[0099] In process S21, the counting of the start time begins. The timing of the start is not particularly limited, and examples include immediately after the filling of hydrogen into the hydrogen tank 11 is completed and before the supply of hydrogen to the fuel cell 13 (before the opening / closing valve 16a is opened).

[0100] 5.2.2. Process S22

[0101] In process S22, the control device 20 obtains the pressure P1 as the pressure measurement value from the pressure sensor 19.

[0102] 5.2.3. Process S23

[0103] In process S23, it is determined whether a predetermined time has elapsed since process S21. If the predetermined time has elapsed, it is regarded as "yes" and the process proceeds to process S24. If the predetermined time has not elapsed, it is regarded as "no" and the time counting continues.

[0104] Here, the predetermined time depends on the time required for the vehicle's system to start. Considering the general time required for the recent vehicle's system to start, it is appropriate to assume within a few seconds.

[0105] 5.2.4. Process S24

[0106] In process S24, the control device 20 obtains the pressure P2 as the pressure measurement value from the pressure sensor 19.

[0107] 5.2.5. Process S25

[0108] In process S25, it is determined whether the difference between the pressure P1 obtained in process S22 and the pressure P2 obtained in process S24 is below the threshold value. Here, the specific value of the threshold is not particularly limited, and it can be a degree where the pressure is considered not to decrease unnaturally although hydrogen is not consumed after filling with hydrogen. The specific value is not particularly limited. For example, if it has decreased by about 10 MPa or more, it can clearly be considered abnormal (hydrogen leakage or pressure sensor failure).

[0109] If the pressure is below the threshold value in process S25, since no abnormal conditions such as leakage have occurred, it is regarded as "yes" and the reporting control S20 ends.

[0110] Since if the difference in pressure is greater than the threshold value in process S25, there may be a leakage, it is regarded as "no" and the process proceeds to process S26.

[0111] 5.2.6. Process S26

[0112] In process S26, it is reported by the reporting device 21 that there may be a leakage. This is done by the control device 20 sending a signal of this situation to the reporting device 21. Additionally, the on-off valve 18 can be closed either at the same time or before this. Thereby, the leakage of hydrogen from the hydrogen filling port 12 can be prevented. The closing of the on-off valve 18 is also done by the control device 20 sending a signal of this situation to the on-off valve 18.

[0113] 5.2.7. Effects, etc.

[0114] According to the report control S20, in the hydrogen tank system 10 where the common pipe 17 is applied, even if there is a malfunction such as hydrogen leakage from the hydrogen filling port or the like, the situation can be reported promptly to facilitate a smooth response.

[0115] If the on-off valve 18 is closed simultaneously, more leakage can also be prevented from occurring.

[0116] In addition, in this exemplary embodiment, since the difference between two pressures (P1, P2) after a specified time is used for determination, even if there are deviations in each system, the accuracy of leakage determination can be further improved.

[0117] Explanation of reference numerals:

[0118] 1…Vehicle; 10…Hydrogen tank system; 11…Hydrogen tank; 12…Hydrogen refueling port (hydrogen filling port); 13…Fuel cell (hydrogen consumption device); 14…Dispenser; 15…Hydrogen filling dedicated pipe; 16…Hydrogen supply dedicated pipe; 17…Common pipe; 18…On-off valve; 19…Pressure sensor; 20…Control device; 21…Reporting device.

Claims

1. A hydrogen tank system, comprising a hydrogen tank, a hydrogen consuming device and a hydrogen filling port, wherein: At least a portion of the piping from the hydrogen filling port to the hydrogen tank and the piping from the hydrogen tank to the hydrogen consuming device are shared. The control device performs control to obtain the internal pressure of the pipe at the common portion of the pipe after the hydrogen tank is filled with hydrogen and before the hydrogen is supplied to the hydrogen consuming device, and to report when the internal pressure becomes equal to or less than a predetermined pressure.

2. A hydrogen tank system, comprising a hydrogen tank, a hydrogen consuming device and a hydrogen filling port, wherein: At least a portion of the piping from the hydrogen filling port to the hydrogen tank and the piping from the hydrogen tank to the hydrogen consuming device are shared. The control device obtains the pressure P1 of hydrogen at the common part of the piping after the hydrogen tank is filled with hydrogen and the pressure P2 before the hydrogen is supplied to the hydrogen consuming device and after a specified time has passed since the hydrogen tank was filled with hydrogen, and reports when the difference between the pressure P1 and the pressure P2 becomes greater than a specified value.

3. The hydrogen tank system according to claim 1 or 2, wherein: The control device closes the valve of the hydrogen tank before or simultaneously with the reporting.

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