Hydrogen cylinder valve opening fault detection method, vehicle-mounted hydrogen storage system and vehicle

Abstract

The invention discloses a hydrogen cylinder valve opening fault detection method, a vehicle-mounted hydrogen storage system and a vehicle. The hydrogen cylinder valve opening fault detection method comprises the steps that it is determined that a hydrogen management controller works normally, and a hydrogen cylinder valve has no circuit fault; the pressure value P1 in the hydrogen pipeline at the moment before all hydrogen cylinder valves are closed last time is obtained and stored; emptying the hydrogen in the hydrogen pipeline; one hydrogen cylinder valve is controlled to serve as a testing hydrogen cylinder valve, the other hydrogen cylinder valves are controlled to be closed, the testing hydrogen cylinder valve is opened for preset time t1, and a pressure value P2 in the hydrogen pipeline is obtained; determining that P1-P2 is greater than a first preset value; and judging that opening of the test hydrogen cylinder valve fails. According to the hydrogen cylinder valve opening fault detection method, the actual opening fault of the hydrogen cylinder valve can be detected, the detection mode is more direct, and the detection accuracy and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a hydrogen bottle valve opening failure detection method, a vehicle-mounted hydrogen storage system and a vehicle. Background Art

[0002] Generally speaking, the vehicle control unit (VCU) determines the need for hydrogen cylinders to supply hydrogen based on various conditions. At this time, the VCU sends a signal to the hydrogen management controller (HMS), and the HMS, after internal calculation and processing, sends a command to open the bottle valve. However, since the bottle valve has no position signal feedback, the HMS can only determine whether a command has been issued to open the bottle valve, but cannot determine whether the bottle valve has actually been opened. If the bottle valve is not actually opened due to some external faults - such as damaged wiring harness, obstruction by foreign objects, etc. - the HMS cannot judge. At this time, hydrogen cannot be supplied normally, and the vehicle cannot drive normally. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a hydrogen bottle valve opening failure detection method, which can detect the actual opening failure of the hydrogen bottle valve, and the detection method is more direct, thereby improving the accuracy and reliability of the detection.

[0004] The present invention also proposes a vehicle-mounted hydrogen storage system, which detects faults through the above-mentioned hydrogen bottle valve opening fault detection method.

[0005] The present invention also provides a vehicle, comprising the above-mentioned on-vehicle hydrogen storage system.

[0006] The hydrogen bottle valve opening fault detection method according to an embodiment of the present invention is used in a vehicle-mounted hydrogen storage system, and the hydrogen bottle valve opening fault detection method includes:

[0007] Make sure the hydrogen management controller is working properly and there is no circuit fault in the hydrogen bottle valve;

[0008] Obtain and store the pressure value P1 in the hydrogen pipeline just before all hydrogen cylinder valves were closed last time;

[0009] exhausting the hydrogen in the hydrogen pipeline;

[0010] Control one of the hydrogen bottle valves as a test hydrogen bottle valve, control the remaining hydrogen bottle valves to be closed, the test hydrogen bottle valve is opened for a preset time t1, and obtain the pressure value P2 in the hydrogen pipeline;

[0011] Determine whether |P1-P2| is greater than a first preset value;

[0012] It is determined that the test hydrogen bottle valve has a fault in opening.

[0013] According to the hydrogen bottle valve opening failure detection method of the embodiment of the present invention, by obtaining and storing the pressure value P1 in the hydrogen pipeline just before all the hydrogen bottle valves were closed last time; emptying the hydrogen in the hydrogen pipeline; controlling one of the hydrogen bottle valves as a test hydrogen bottle valve, controlling the remaining hydrogen bottle valves to be closed, the test hydrogen bottle valve is opened for a preset time t1, and obtaining the pressure value P2 in the hydrogen pipeline, determining that |P1-P2| is greater than a first preset value; judging that the test hydrogen bottle valve has a failure to open, an actual opening failure of the hydrogen bottle valve can be detected, and the detection method is more direct, thereby improving the accuracy and reliability of the detection.

[0014] In some embodiments of the present invention, the number of the hydrogen cylinders is N, and the N hydrogen cylinder valves are controlled in sequence to serve as test hydrogen cylinder valves for detection.

[0015] In some embodiments of the present invention, the hydrogen bottle valve opening failure detection method includes:

[0016] Determine the initial value N1 of the count value;

[0017] After the test of the hydrogen bottle valve is completed, the count value is increased by 1;

[0018] Determine that the current count value is equal to N1+N;

[0019] Make sure all hydrogen cylinder valves have been inspected.

[0020] In some embodiments of the present invention, the pressure value of the hydrogen pipeline after being emptied is P0, wherein P1-P0 is greater than a first preset value.

[0021] In some embodiments of the present invention, the hydrogen pipeline includes a multi-way valve and a connecting pipeline connecting the multi-way valve and a plurality of hydrogen cylinders, and the obtaining and storing of the pressure value P1 in the hydrogen pipeline just before all hydrogen cylinder valves were closed last time includes:

[0022] The pressure value in the multi-way valve just before all hydrogen bottle valves were closed last time is obtained and stored as the pressure value P1 in the hydrogen pipeline.

[0023] In some embodiments of the present invention, a hydrogen injection valve is connected to the hydrogen pipeline. When the hydrogen in the hydrogen pipeline is emptied, the hydrogen bottle valve opening fault detection method further includes:

[0024] The hydrogen injection valve is controlled to open.

[0025] In some embodiments of the present invention, the operating conditions of the hydrogen bottle valve opening fault detection method include: the vehicle is in a powered-on state.

[0026] According to the vehicle-mounted hydrogen storage system of the embodiment of the present invention, the fault is detected by the above-mentioned hydrogen bottle valve opening fault detection method.

[0027] According to the on-board hydrogen storage system of the embodiment of the present invention, the fault is detected by the above-mentioned hydrogen bottle valve opening fault detection method, and the pressure value P1 in the hydrogen pipeline just before all the hydrogen bottle valves were closed last time is obtained and stored; the hydrogen in the hydrogen pipeline is emptied; one of the hydrogen bottle valves is controlled to be used as a test hydrogen bottle valve, and the remaining hydrogen bottle valves are controlled to be closed, the test hydrogen bottle valve is opened for a preset time t1, and the pressure value P2 in the hydrogen pipeline is obtained, and it is determined that |P1-P2| is greater than a first preset value; it is judged that a fault occurs in the opening of the test hydrogen bottle valve, and an actual opening fault of the hydrogen bottle valve can be detected, and the detection method is more direct, thereby improving the accuracy and reliability of the detection.

[0028] In some embodiments of the present invention, the on-board hydrogen storage system includes: a fuel cell stack; a plurality of hydrogen cylinders, each of which is provided with a hydrogen cylinder valve; a hydrogen pipeline, the hydrogen pipeline being connected to each of the hydrogen cylinder valves; a hydrogen injection valve, the hydrogen injection valve being connected to both the hydrogen pipeline and the fuel cell stack; a pressure sensor, the pressure sensor being provided in the hydrogen pipeline for detecting the pressure of the hydrogen pipeline; a hydrogen management controller, the hydrogen management controller being communicatively connected to each of the hydrogen cylinder valves and the pressure sensor; and a fuel cell controller, the fuel cell controller being communicatively connected to the fuel cell stack and the hydrogen injection valve.

[0029] A vehicle according to an embodiment of the present invention includes the above-mentioned on-vehicle hydrogen storage system.

[0030] According to the vehicle of the embodiment of the present invention, by setting the above-mentioned on-board hydrogen storage system, the fault is detected by the above-mentioned hydrogen bottle valve opening fault detection method, and the pressure value P1 in the hydrogen pipeline just before all the hydrogen bottle valves were closed last time is obtained and stored; the hydrogen in the hydrogen pipeline is emptied; one of the hydrogen bottle valves is controlled to be used as a test hydrogen bottle valve, and the remaining hydrogen bottle valves are controlled to be closed, the test hydrogen bottle valve is opened for a preset time t1, and the pressure value P2 in the hydrogen pipeline is obtained, and it is determined that |P1-P2| is greater than a first preset value; it is judged that a fault occurs in the opening of the test hydrogen bottle valve, and an actual opening fault of the hydrogen bottle valve can be detected, and the detection method is more direct, thereby improving the accuracy and reliability of the detection.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0033] Figure 1 is a schematic diagram of a vehicle-mounted hydrogen storage system according to an embodiment of the present invention;

[0034] Figure 2Schematic diagram of a hydrogen bottle valve opening fault detection method according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] 10. On-board hydrogen storage system;

[0037] 1. Hydrogen cylinder; 11. Hydrogen cylinder valve;

[0038] 2. Hydrogen pipeline; 21. Multi-way valve; 22. Connecting pipeline; 23. Pressure reducing valve;

[0039] 3. Hydrogen injection valve;

[0040] 4. Pressure sensor;

[0041] 5. Hydrogen management controller;

[0042] 6. Fuel cell controller;

[0043] 7. Battery stack.

[0044] 20. Hydrogenation equipment. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Reference below Figure 1 and Figure 2 A method for detecting a hydrogen bottle valve opening failure according to an embodiment of the present invention is described.

[0049] like Figure 1 and Figure 2 As shown, the hydrogen bottle valve opening fault detection method according to an embodiment of the present invention is used in a vehicle-mounted hydrogen storage system 10, and the hydrogen bottle valve opening fault detection method includes:

[0050] Determine that the hydrogen management controller 5 operates normally and that the hydrogen bottle valve 11 has no circuit faults; the normal operation of the hydrogen management controller 5 and the absence of circuit faults in the hydrogen bottle valve 11 are prerequisites for fault detection of the hydrogen bottle valve 11, ensuring the accuracy and reliability of fault detection of the hydrogen bottle valve 11.

[0051] Obtain and store the pressure value P1 in the hydrogen pipeline 2 just before all hydrogen bottle valves 11 were closed last time; just before all hydrogen bottle valves 11 were closed last time, there was sufficient hydrogen in the hydrogen pipeline 2, and the pressure value in the hydrogen pipeline 2 was relatively large, and P1 can be used as a reference parameter. Among them, just before all hydrogen bottle valves 11 were closed last time, the hydrogen in the hydrogen pipeline 2 can be supplied by the hydrogen bottle 1, or by a hydrogenation device 20 such as a hydrogenation gun. The hydrogen management controller 5 has a non-volatile memory, so that after the hydrogen management controller 5 is powered off, the stored data content can still be stored for a long time, thereby facilitating the acquisition and storage of the pressure value P1 in the hydrogen pipeline 2 just before all hydrogen bottle valves 11 were closed last time.

[0052] The hydrogen in the hydrogen pipeline 2 is emptied; thereby, the pressure of the hydrogen pipeline 2 can be relieved, thereby avoiding affecting the subsequent test results and making the test results more accurate.

[0053] Control one of the hydrogen bottle valves 11 as a test hydrogen bottle valve 11, control the other hydrogen bottle valves 11 to be closed, open the test hydrogen bottle valve 11 for a preset time t1, and obtain the pressure value P2 in the hydrogen pipeline 2; wherein, the test hydrogen bottle valve 11 is fully opened, t1 can be designed according to parameters such as the diameter of the hydrogen pipeline 2, so that within the t1 time after the test hydrogen bottle valve 11 is opened, sufficient hydrogen can enter the hydrogen pipeline 2, so that when the test hydrogen bottle valve 11 is normally opened, the pressure value P2 in the hydrogen pipeline 2 can be close to P1.

[0054] Determine whether |P1-P2| is greater than a first preset value;

[0055] It is determined that the test hydrogen bottle valve 11 is faulty when it is opened.

[0056] It is understandable that when the test hydrogen bottle valve 11 cannot be opened normally, hydrogen cannot enter the hydrogen pipeline 2 from the hydrogen bottle 1, so that the pressure value P2 in the hydrogen pipeline 2 is too small, and the difference between P2 and P1 is too large. By the difference between P2 and P1 reaching a certain value, that is, |P1-P2| is greater than the first preset value, it is judged that the test hydrogen bottle valve 11 has a failure to open. At this time, it can be determined that the hydrogen bottle valve 11 has an actual opening failure. When the test hydrogen bottle valve 11 is opened normally, hydrogen can enter the hydrogen pipeline 2 from the hydrogen bottle 1, so that the difference between the pressure values ​​P2 and P1 in the hydrogen pipeline 2 is small, that is, |P1-P2| is less than or equal to the first preset value, so that the test hydrogen bottle valve 11 is judged to be opened normally. At this time, it can be determined that the hydrogen bottle valve 11 is actually opened normally.

[0057] In summary, by determining that |P1-P2| is greater than the first preset value to judge whether the test hydrogen bottle valve 11 has a failure in opening, the actual opening failure of the hydrogen bottle valve 11 can be detected. The detection method is more direct and improves the accuracy and reliability of the detection.

[0058] At the same time, when a hydrogen bottle valve 11 fault is detected, one of the hydrogen bottle valves 11 is controlled as a test hydrogen bottle valve 11, and the remaining hydrogen bottle valves 11 are controlled to be closed. Thus, simultaneous detection of multiple hydrogen bottle valves 11 can be avoided, so that it can be quickly determined whether a test hydrogen bottle valve 11 is open and faulty.

[0059] Furthermore, the hydrogen management controller 5 is communicatively connected to the vehicle central control, and the hydrogen management controller 5 can transmit the faulty test hydrogen bottle valve 11 to the vehicle central control to prompt the user to perform corresponding maintenance work.

[0060] According to the hydrogen bottle valve opening failure detection method of the embodiment of the present invention, by obtaining and storing the pressure value P1 in the hydrogen pipeline 2 just before all the hydrogen bottle valves 11 were closed last time; emptying the hydrogen in the hydrogen pipeline 2; controlling one of the hydrogen bottle valves 11 as a test hydrogen bottle valve 11, controlling the remaining hydrogen bottle valves 11 to be closed, the test hydrogen bottle valve 11 is opened for a preset time t1, and obtaining the pressure value P2 in the hydrogen pipeline 2, and determining that |P1-P2| is greater than a first preset value; judging that the test hydrogen bottle valve 11 fails to open, an actual opening failure of the hydrogen bottle valve 11 can be detected, and the detection method is more direct, thereby improving the accuracy and reliability of the detection.

[0061] In some embodiments of the present invention, Figure 2As shown, the number of hydrogen cylinders 1 is N, and N hydrogen cylinder valves 11 are sequentially controlled to be tested as test hydrogen cylinder valves 11. Therefore, by sequentially controlling N hydrogen cylinder valves 11 to be tested as test hydrogen cylinder valves 11, all hydrogen cylinder valves 11 can be tested, so that all faulty hydrogen cylinder valves 11 can be detected, reducing the probability of danger to the driver.

[0062] In addition, although all hydrogen bottle valves 11 need to be tested, the testing process is carried out sequentially, that is, only one hydrogen bottle valve 11 is tested at a time, and what is tested is the pressure in the hydrogen pipeline 2. There is no need to set a pressure sensor 4 on each hydrogen bottle valve 11. Only one pressure sensor 4 needs to be set on the hydrogen pipeline 2 to complete the test, thereby reducing the cost of testing.

[0063] In some embodiments of the present invention, a method for detecting a hydrogen bottle valve opening failure includes:

[0064] Determine the initial value N1 of the count value;

[0065] After the test of the hydrogen bottle valve 11 is completed, the count value is counted by 1;

[0066] Determine that the current count value is equal to N1+N;

[0067] Make sure that all hydrogen bottle valves 11 have been inspected.

[0068] It can be understood that since the number of hydrogen cylinders 1 is N, when it is determined that the current count value is equal to N1+N, it means that N, i.e. all, hydrogen bottle valves 11 have been detected. At this time, the on-board hydrogen storage system 10 can determine that the detection of all hydrogen bottle valves 11 has been completed, and the on-board hydrogen storage system 10 can stop the fault detection work of the hydrogen bottle valves 11.

[0069] For example, the number of hydrogen cylinders 1 is N=3, the initial count value N1=1, and when the current count value is determined to be 4, it means that 3 or all hydrogen bottle valves 11 have been detected. At this time, the on-board hydrogen storage system 10 can determine that the detection of all hydrogen bottle valves 11 is completed, and the on-board hydrogen storage system 10 can stop the fault detection work of the hydrogen bottle valves 11.

[0070] In some embodiments of the present invention, the pressure value of the hydrogen pipeline 2 after being emptied is P0, wherein P1-P0 is greater than the first preset value. It is understandable that if P1-P0 is less than the first preset value, when the test hydrogen bottle valve 11 fails to open, the pressure value P2=P0 in the hydrogen pipeline 2 is obtained at this time, and |P1-P2|=P1-P0, then |P1-P2| is less than the first preset value, and the on-board hydrogen storage system 10 determines that the test hydrogen bottle valve 11 of this fault is opened normally, which is inconsistent with the actual situation.

[0071] When P1-P0 is greater than the first preset value, when the test hydrogen bottle valve 11 fails to open, the pressure value P2=P0 in the hydrogen pipeline 2 is obtained at this time. At this time, |P1-P2|=P1-P0, then |P1-P2| is greater than the first preset value. At this time, the on-board hydrogen storage system 10 determines that the test hydrogen bottle valve 11 of this fault is open, which is consistent with the actual situation.

[0072] Therefore, by having P1-P0 be greater than the first preset value, interference in determining the faulty test hydrogen bottle valve 11 can be avoided, making the detection result more accurate and reliable.

[0073] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the hydrogen pipeline 2 includes a multi-way valve 21 and a connecting pipeline 22 connecting the multi-way valve 21 and multiple hydrogen cylinders 1. Obtaining and storing the pressure value P1 in the hydrogen pipeline 2 just before all hydrogen cylinder valves 11 were closed last time includes:

[0074] The pressure value in the multi-way valve 21 just before all hydrogen bottle valves 11 were closed last time is acquired and stored as the pressure value P1 in the hydrogen pipeline 2 .

[0075] Furthermore, if Figure 1 and Figure 2 As shown, controlling one of the hydrogen bottle valves 11 as a test hydrogen bottle valve 11, controlling the remaining hydrogen bottle valves 11 to be closed, the test hydrogen bottle valve 11 is opened for a preset time t1, and obtaining the pressure value P2 in the hydrogen pipeline 2 includes:

[0076] The pressure value in the multi-way valve 21 is obtained as the pressure value P2 in the hydrogen pipeline 2 .

[0077] It can be understood that the multi-way valve 21 is connected to multiple hydrogen bottle valves 11, so that multiple hydrogen bottle valves 11 can respectively transmit hydrogen to the multi-way valve 21. Since P1 and P2 are both measured in the multi-way valve 21, that is, the pressure detection environment of P1 and P2 is the same, the errors of P1 and P2 when detecting normal test hydrogen bottle valves 11 can be reduced, thereby improving the detection results.

[0078] In some embodiments of the present invention, a hydrogen injection valve 3 is connected to the hydrogen pipeline 2. When the hydrogen in the hydrogen pipeline 2 is emptied, the hydrogen bottle valve opening fault detection method further includes:

[0079] Control the hydrogen injection valve 3 to open.

[0080] It is understandable that the setting of the hydrogen injection valve 3 enables the hydrogen pipeline 2 to be emptied of hydrogen and the pressure relief of the hydrogen pipeline 2. When it is necessary to open the test hydrogen bottle valve 11 for testing, the hydrogen injection valve 3 is closed so that the hydrogen can stay in the multi-way valve 21, increasing the pressure in the multi-way valve 21, thereby ensuring the accuracy of the test results.

[0081] In some embodiments of the present invention, the operating conditions of the hydrogen bottle valve opening fault detection method include: the vehicle is in a powered-on state.

[0082] According to the vehicle-mounted hydrogen storage system 10 of the embodiment of the present invention, the fault is detected by the above-mentioned hydrogen bottle valve opening fault detection method.

[0083] According to the on-board hydrogen storage system 10 of the embodiment of the present invention, the fault is detected by the above-mentioned hydrogen bottle valve opening fault detection method, and the pressure value P1 in the hydrogen pipeline 2 just before all the hydrogen bottle valves 11 were closed last time is obtained and stored; the hydrogen in the hydrogen pipeline 2 is emptied; one of the hydrogen bottle valves 11 is controlled to be used as a test hydrogen bottle valve 11, and the remaining hydrogen bottle valves 11 are controlled to be closed, and the test hydrogen bottle valve 11 is opened for a preset time t1, and the pressure value P2 in the hydrogen pipeline 2 is obtained, and it is determined that |P1-P2| is greater than a first preset value; it is judged that a fault occurs in the opening of the test hydrogen bottle valve 11, and an actual opening fault of the hydrogen bottle valve 11 can be detected, and the detection method is more direct, thereby improving the accuracy and reliability of the detection.

[0084] In some embodiments of the present invention, Figure 1 As shown, the vehicle-mounted hydrogen storage system 10 includes: a fuel cell stack 7, a hydrogen cylinder 1, a hydrogen pipeline 2, a pressure sensor 4, a hydrogen injection valve 3, a hydrogen management controller 5 and a fuel cell controller 6.

[0085] There are multiple hydrogen cylinders 1, and each hydrogen cylinder 1 is provided with a hydrogen cylinder valve 11; the hydrogen pipeline 2 is connected to each hydrogen cylinder valve 11; the hydrogen injection valve 3 is connected to the hydrogen pipeline 2; the hydrogen injection valve 3 is connected to both the hydrogen pipeline 2 and the fuel cell stack 7, and the pressure sensor 4 is provided on the hydrogen pipeline 2 for detecting the pressure of the hydrogen pipeline 2; the hydrogen management controller 5 is communicatively connected to each hydrogen cylinder valve 11 and the pressure sensor 4, and the fuel cell controller 6, the fuel cell stack 7 and the hydrogen injection valve 3 are communicatively connected.

[0086] It should be noted that the hydrogen pipeline 2 includes a multi-way valve 21, a connecting pipeline 22 connecting the multi-way valve 21 and a plurality of hydrogen cylinders 1, and a pressure reducing valve 23. The multi-way valve 21 is connected to the pressure reducing valve 23, which is generally in an open state. The pressure reducing valve 23 is connected to the hydrogen injection valve 3, so that the hydrogen pipeline 2 is connected to the hydrogen injection valve 3. The pressure sensor 4 is provided on the multi-way valve 21, and is used to detect the pressure in the multi-way valve 21. The multi-way valve 21 has a first port, a second port, and a third port. The first port is multiple, and the multiple first ports correspond to and are connected to the multiple hydrogen cylinder valves 11 one by one, so as to facilitate the detection of the failure of the hydrogen cylinder valve 11. The second port is connected to the pressure reducing valve 23, and the pressure reducing valve 23 is connected to the hydrogen injection valve 3, so that the multi-way valve 21 releases the pressure. The third port is connected to the hydrogenation equipment 20 such as a hydrogenation gun, so as to add hydrogen to the hydrogen cylinder 1.

[0087] It is understandable that the hydrogen management controller 5 is connected in communication with each hydrogen bottle valve 11 and pressure sensor 4, so as to facilitate the control of the operation of each hydrogen bottle valve 11 and pressure sensor 4, so as to facilitate the implementation of the hydrogen bottle valve opening fault detection method. The fuel cell controller 6 is connected in communication with the stack 7 and the hydrogen injection valve 3. The fuel cell controller 6 can control the hydrogen injection valve 3 to open or close, and can also control the operation of the stack 7. When the fuel cell controller 6 controls the hydrogen injection valve 3 to open, it also controls the stack 7 to start working, so as to facilitate the consumption of hydrogen from the hydrogen pipeline 2. Figure 1 In the figure, the dotted lines represent the communication connection lines (the communication connection lines between the hydrogen management controller 5 and each hydrogen bottle valve 11 and the pressure sensor 4, and the communication connection lines between the fuel cell controller 6 and the stack 7 and the hydrogen injection valve 3).

[0088] The vehicle according to the embodiment of the present invention includes the above-mentioned on-vehicle hydrogen storage system 10 .

[0089] According to the vehicle of the embodiment of the present invention, by setting the above-mentioned on-board hydrogen storage system 10, the fault is detected by the above-mentioned hydrogen bottle valve opening fault detection method, and the pressure value P1 in the hydrogen pipeline 2 just before all the hydrogen bottle valves 11 were closed last time is obtained and stored; the hydrogen in the hydrogen pipeline 2 is emptied; one of the hydrogen bottle valves 11 is controlled to be used as a test hydrogen bottle valve 11, and the remaining hydrogen bottle valves 11 are controlled to be closed, the test hydrogen bottle valve 11 is opened for a preset time t1, and the pressure value P2 in the hydrogen pipeline 2 is obtained, and it is determined that |P1-P2| is greater than a first preset value; it is judged that a fault occurs in the opening of the test hydrogen bottle valve 11, and an actual opening fault of the hydrogen bottle valve 11 can be detected, and the detection method is more direct, thereby improving the accuracy and reliability of the detection.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0091] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for detecting a hydrogen bottle valve opening failure, characterized in that: For a vehicle-mounted hydrogen storage system, the hydrogen bottle valve opening fault detection method includes: Make sure the hydrogen management controller is working properly and there is no circuit fault in the hydrogen bottle valve; Obtain and store the pressure value P1 in the hydrogen pipeline just before all hydrogen cylinder valves were closed last time; exhausting the hydrogen in the hydrogen pipeline; Control one of the hydrogen bottle valves as a test hydrogen bottle valve, control the remaining hydrogen bottle valves to be closed, the test hydrogen bottle valve is opened for a preset time t1, and obtain the pressure value P2 in the hydrogen pipeline; Determine whether |P1-P2| is greater than a first preset value; It is determined that the test hydrogen bottle valve has a fault in opening.

2. The hydrogen bottle valve opening failure detection method according to claim 1 is characterized in that: The number of the hydrogen cylinders is N, and the N hydrogen cylinder valves are controlled in sequence as test hydrogen cylinder valves for detection.

3. The hydrogen bottle valve opening failure detection method according to claim 2 is characterized in that: The hydrogen bottle valve opening fault detection method comprises: Determine the initial value N1 of the count value; After the test of the hydrogen bottle valve is completed, the count value is increased by 1; Determine that the current count value is equal to N1+N; Make sure all hydrogen cylinder valves have been inspected.

4. The hydrogen bottle valve opening failure detection method according to claim 1 is characterized in that: The pressure value of the hydrogen pipeline after being emptied is P0, wherein P1-P0 is greater than the first preset value.

5. The hydrogen bottle valve opening failure detection method according to claim 1 is characterized in that: The hydrogen pipeline includes a multi-way valve and a connecting pipeline connecting the multi-way valve and a plurality of hydrogen cylinders, and the obtaining and storing of the pressure value P1 in the hydrogen pipeline just before all hydrogen cylinder valves were closed last time includes: The pressure value in the multi-way valve just before all hydrogen bottle valves were closed last time is obtained and stored as the pressure value P1 in the hydrogen pipeline.

6. The hydrogen bottle valve opening failure detection method according to claim 1 is characterized in that: The hydrogen pipeline is connected with a hydrogen injection valve. When the hydrogen in the hydrogen pipeline is emptied, the hydrogen bottle valve opening fault detection method further includes: The hydrogen injection valve is controlled to open.

7. The hydrogen bottle valve opening failure detection method according to claim 1 is characterized in that: The operating conditions of the hydrogen bottle valve opening fault detection method include: The vehicle is powered on.

8. A vehicle-mounted hydrogen storage system, characterized in that: The fault is detected by the hydrogen bottle valve opening fault detection method according to any one of claims 1-7.

9. The vehicle-mounted hydrogen storage system according to claim 8, characterized in that: include: Battery stack; A hydrogen cylinder, wherein there are multiple hydrogen cylinders, and each of the hydrogen cylinders is provided with the hydrogen cylinder valve; A hydrogen pipeline connected to each of the hydrogen bottle valves; A hydrogen injection valve, the hydrogen injection valve is connected to both the hydrogen pipeline and the fuel cell stack; A pressure sensor, the pressure sensor is arranged in the hydrogen pipeline and is used to detect the pressure of the hydrogen pipeline; A hydrogen management controller, the hydrogen management controller is communicatively connected with each of the hydrogen bottle valves and the pressure sensor; A fuel cell controller is communicatively connected to the fuel cell stack and the hydrogen injection valve.

10. A vehicle, characterized in that: Comprising the on-vehicle hydrogen storage system according to claim 9.

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