Method, device and equipment for judging state of cylinder valve of hydrogen supply system and medium

Abstract

The invention relates to the technical field of new energy. The invention discloses a hydrogen supply system cylinder valve state judgment method, device and equipment and a medium, and the method comprises the following steps: obtaining battery information fed back by a fuel cell system, and calculating to obtain theoretical hydrogen consumption according to the battery information; hydrogen supply information fed back by a hydrogen supply system is obtained, and the hydrogen supply amount is calculated according to the hydrogen supply information; and on the basis of a preset cylinder valve state judgment rule, according to the theoretical hydrogen consumption and the hydrogen supply quantity, whether the cylinder valve state of the hydrogen supply system is normal or not is judged. Whether the state of the cylinder valve of the hydrogen supply system is normal or not is judged according to the theoretical hydrogen consumption and the hydrogen supply amount, whether the hydrogen supply system can meet hydrogen supply or not can be found in time, the accuracy of state recognition of the cylinder valve of the hydrogen supply system is improved, and the safety and endurance mileage of the whole vehicle are improved.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a method, device, equipment and medium for judging the state of a bottle valve of a hydrogen supply system. Background Art

[0002] Fuel cell vehicles use hydrogen as energy and are highly efficient and environmentally friendly. The vehicle's cruising range is affected by factors such as the pressure of the hydrogen bottles configured for the on-board fuel cell hydrogen supply system, the volume of the hydrogen bottles, the number of hydrogen bottles, the efficiency of the fuel cell system and the utilization rate of hydrogen, the battery capacity, and the energy consumption of the vehicle. If space permits, in order to increase the cruising range of the fuel cell vehicle, the hydrogen supply system will generally have as many hydrogen bottles as possible.

[0003] The working state of the hydrogen supply system is controlled by the command of the fuel cell system controller. The hydrogen supply system controller decides whether to accept the fuel cell system valve opening command based on its own state. However, the bottle valve state feedback is the command, and cannot accurately feedback the actual state of the bottle valve. For example, when the bottle valve cannot be opened or the gas in the bottle cannot be supplied normally due to some special reasons, such as: the pressure difference in the bottle is too large, the manual valve is closed, etc., at this time, the fuel cell system controller cannot judge whether the bottle valves of the hydrogen bottles are opened normally, and cannot detect faults in time. If it is not ensured that each gas cylinder can supply gas normally during operation, it will lead to a series of problems such as short vehicle range.

[0004] Therefore, providing a solution for determining the status of the bottle valve of the hydrogen supply system is a technical problem that those skilled in the art need to face. Summary of the invention

[0005] In view of this, the present invention provides a method, device, equipment and medium for judging the status of a bottle valve in a hydrogen supply system.

[0006] Specifically, the following technical solutions are included:

[0007] In a first aspect, a method for determining a state of a bottle valve of a hydrogen supply system is provided, comprising:

[0008] Obtaining battery information fed back by the fuel cell system, and calculating theoretical hydrogen consumption according to the battery information;

[0009] Obtaining hydrogen supply information fed back by the hydrogen supply system, and calculating the hydrogen supply amount according to the hydrogen supply information;

[0010] Based on the preset bottle valve status judgment rule, and according to the theoretical hydrogen consumption and the hydrogen supply amount, it is judged whether the bottle valve status of the hydrogen supply system is normal.

[0011] Preferably, the obtaining of battery information fed back by the fuel cell system and calculating the theoretical hydrogen consumption according to the battery information includes:

[0012] Obtain the stack current, number of cells and battery operating time fed back by the fuel cell system;

[0013] Based on a preset theoretical hydrogen consumption calculation model, the theoretical hydrogen consumption is obtained according to the battery stack current, the number of battery cells and the battery operating time.

[0014] Preferably, the obtaining of battery information fed back by the fuel cell system and calculating the theoretical hydrogen consumption according to the battery information includes:

[0015] Obtain the stack power fed back by the fuel cell system;

[0016] Based on a preset mapping relationship between the stack power and the theoretical hydrogen consumption, the theoretical hydrogen consumption is obtained according to the stack power.

[0017] Preferably, the obtaining of hydrogen supply information fed back by the hydrogen supply system and calculating the hydrogen supply amount according to the hydrogen supply information includes:

[0018] Obtain the initial hydrogen supply pressure, initial hydrogen supply temperature, final hydrogen supply pressure, final hydrogen supply temperature and total volume of the hydrogen cylinder of the hydrogen supply system;

[0019] The hydrogen supply amount is obtained by calculation based on the hydrogen supply initial pressure, the hydrogen supply initial temperature, the hydrogen supply termination pressure, the hydrogen supply termination temperature and the total volume of the hydrogen cylinder of the hydrogen supply system.

[0020] Preferably, judging whether the state of the bottle valve of the hydrogen supply system is normal based on the preset bottle valve state judgment rule and the theoretical hydrogen consumption and the hydrogen supply amount includes:

[0021] Calculating the difference between the theoretical hydrogen consumption and the hydrogen supply to obtain an absolute value of the hydrogen difference;

[0022] Calculating the ratio between the absolute value of the hydrogen difference and the theoretical hydrogen consumption to obtain a supply-consumption deviation;

[0023] When the supply and consumption deviation is greater than the preset deviation, it is determined that the state of the hydrogen supply system bottle valve is abnormal;

[0024] When the supply-consumption deviation is less than or equal to the preset deviation, it is determined that the status of the hydrogen supply system bottle valve is normal.

[0025] Preferably, when the supply-consumption deviation is greater than a preset deviation, judging that the state of the hydrogen supply system bottle valve is abnormal includes:

[0026] Calculating the ratio between the supply and consumption deviation and the preset deviation to obtain a deviation ratio;

[0027] According to the deviation ratio, the number of bottle valves in abnormal status in the hydrogen supply system is obtained.

[0028] Preferably, the method further comprises:

[0029] Obtain the initial hydrogenation pressure, initial hydrogenation temperature, final hydrogenation pressure, final hydrogenation temperature and total volume of the hydrogen cylinder of the hydrogen supply system;

[0030] The theoretical hydrogenation amount is calculated based on the initial hydrogenation pressure, the initial hydrogenation temperature, the hydrogenation end pressure, the hydrogenation end temperature and the total volume of the hydrogen cylinder of the hydrogen supply system;

[0031] The hydrogenation amount of the hydrogenation gun is obtained, and whether the state of the bottle valve of the hydrogen supply system is normal is determined according to the theoretical hydrogenation amount and the hydrogenation amount of the hydrogenation gun.

[0032] In a second aspect, a device for determining the state of a bottle valve of a hydrogen supply system is provided, comprising:

[0033] A first calculation module is used to obtain battery information fed back by the fuel cell system, and calculate the theoretical hydrogen consumption according to the battery information;

[0034] A second calculation module is used to obtain hydrogen supply information fed back by the hydrogen supply system, and calculate the hydrogen supply amount according to the hydrogen supply information;

[0035] The judgment module is used to judge whether the state of the bottle valve of the hydrogen supply system is normal based on the preset bottle valve state judgment rules and the theoretical hydrogen consumption and the hydrogen supply amount.

[0036] In a third aspect, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method for determining the status of a bottle valve of a hydrogen supply system as described above are implemented.

[0037] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for determining the state of a bottle valve of a hydrogen supply system as described above are implemented.

[0038] The beneficial effects of the technical solution provided by the present invention include at least:

[0039] The present invention obtains theoretical hydrogen consumption by calculating battery information fed back by the fuel cell system, obtains hydrogen supply information fed back by the hydrogen supply system, and determines whether the status of a bottle valve of the hydrogen supply system is normal by the theoretical hydrogen consumption and the hydrogen supply. It is possible to timely discover whether the hydrogen supply system can meet the hydrogen supply, thereby improving the accuracy of identifying the status of the bottle valve of the hydrogen supply system and improving the safety and cruising range of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 Schematic diagram of an application environment of a method for determining a state of a bottle valve of a hydrogen supply system according to an embodiment of the present invention;

[0042] Figure 2 It is a flow chart of a method for judging the state of a bottle valve of a hydrogen supply system in one embodiment of the present invention;

[0043] Figure 3 It is a structural schematic diagram of a device for judging the state of a bottle valve of a hydrogen supply system in one embodiment of the present invention;

[0044] Figure 4 is a schematic diagram of a structure of a computer device in one embodiment of the present invention;

[0045] Figure 5 It is another structural schematic diagram of a computer device in one embodiment of the present invention.

[0046] The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] A method for determining the status of a hydrogen supply system bottle valve provided by an embodiment of the present invention can be applied in the following aspects: Figure 1In the application environment, the device end communicates with the service end through the network. The service end can obtain the battery information fed back by the fuel cell system from the device end, and calculate the theoretical hydrogen consumption according to the battery information; obtain the hydrogen supply information fed back by the hydrogen supply system, and calculate the hydrogen supply according to the hydrogen supply information; based on the pre-set bottle valve state judgment rule, judge whether the bottle valve state of the hydrogen supply system is normal according to the theoretical hydrogen consumption and the hydrogen supply. The present application calculates the theoretical hydrogen consumption by the battery information fed back by the fuel cell system, calculates the hydrogen supply by obtaining the hydrogen supply information fed back by the hydrogen supply system, and judges whether the bottle valve state of the hydrogen supply system is normal by the theoretical hydrogen consumption and the hydrogen supply. It can timely find out whether the hydrogen supply system can meet the hydrogen supply, improve the accuracy of the hydrogen supply system bottle valve state identification, and improve the safety and cruising range of the whole vehicle. Among them, the device end is set on the fuel cell vehicle, including various sensors, such as current sensors, voltage sensors, power sensors, temperature sensors, pressure sensors, etc. The service end can be implemented by an independent server or a server cluster composed of multiple servers. The present invention is described in detail below through specific embodiments.

[0049] See also Figure 2 As shown, Figure 2 A flow chart of a method for determining the status of a hydrogen supply system bottle valve provided by an embodiment of the present invention includes the following steps:

[0050] S10: Obtaining battery information fed back by the fuel cell system, and calculating theoretical hydrogen consumption according to the battery information.

[0051] Specifically, by processing the battery information fed back by the fuel cell system, the theoretical hydrogen consumption of the fuel cell vehicle within one operating time can be obtained.

[0052] Specifically, in the first embodiment, the battery information includes the battery stack current, the number of battery cells and the battery operating time. Step S10 obtains the battery information fed back by the fuel cell system, and calculates the theoretical hydrogen consumption according to the battery information, including:

[0053] S11: Obtaining the stack current, number of cells and battery operation time fed back by the fuel cell system;

[0054] S12: Based on a preset theoretical hydrogen consumption calculation model, the theoretical hydrogen consumption is obtained according to the battery stack current, the number of battery cells and the battery operating time.

[0055] Specifically, the preset theoretical hydrogen consumption calculation model presets the following theoretical hydrogen consumption calculation formula:

[0056]

[0057] Where: G is the theoretical hydrogen consumption, kg; M is the relative molecular mass of hydrogen, which is 2.016 g / mol; I is the stack current, A; N is the number of cells; n is the number of electrons released by each hydrogen molecule, which is 2; F is the Faraday constant, which is 96485; t is the operating time, s; and η is the hydrogen utilization rate.

[0058] Specifically, in a specific example of the first implementation scheme, the stack current I is 340A, the number of battery cells is 340, the operating time t is 30min, and the hydrogen utilization rate η is 0.98. According to formula (1), the theoretical hydrogen consumption G is 2.218kg.

[0059] Specifically, in the second embodiment, the battery information includes the battery stack power, and step S10 obtains the battery information fed back by the fuel cell system, and calculates the theoretical hydrogen consumption according to the battery information, which may also include:

[0060] S11′: obtaining the stack power fed back by the fuel cell system;

[0061] S12′: Based on a preset mapping relationship between the stack power and the theoretical hydrogen consumption, the theoretical hydrogen consumption is obtained according to the stack power.

[0062] Specifically, in the second embodiment, the stack power is the stack power corresponding to the operating time in the first embodiment. The mapping relationship between the stack power and the theoretical hydrogen consumption is a corresponding table between the stack power and the theoretical hydrogen consumption, and the theoretical hydrogen consumption G can be directly obtained by looking up the table according to the stack power. It can be understood that the mapping relationship between the stack power and the theoretical hydrogen consumption can be a mapping relationship after considering the hydrogen utilization rate, or it can be a mapping relationship without considering the hydrogen utilization rate. When the mapping relationship between the stack power and the theoretical hydrogen consumption considers the mapping relationship after the hydrogen utilization rate, the theoretical hydrogen consumption G is directly obtained by looking up the table; when the mapping relationship between the stack power and the theoretical hydrogen consumption does not consider the mapping relationship of the hydrogen utilization rate, the theoretical hydrogen consumption G' is obtained by looking up the table, and then the theoretical hydrogen consumption G is calculated based on the theoretical hydrogen consumption G' and the pre-set hydrogen utilization rate.

[0063] It is understandable that the stack current I, the number of cells, and the hydrogen utilization rate can be freely configured, and the battery operating time is obtained through the timer of the fuel cell vehicle. The battery operating time is the operating time of the fuel cell vehicle within the calculation cycle.

[0064] S20: Obtain hydrogen supply information fed back by the hydrogen supply system, and calculate the hydrogen supply amount according to the hydrogen supply information.

[0065] Specifically, the time length for calculating the hydrogen supply amount is consistent with the time length for calculating the theoretical hydrogen consumption. Step S10 and step S20 can be performed simultaneously, that is, the battery information and the hydrogen supply information can be obtained synchronously, and the theoretical hydrogen consumption and the hydrogen supply amount can be calculated synchronously.

[0066] Specifically, step S20 obtains hydrogen supply information fed back by the hydrogen supply system, and calculates the hydrogen supply amount according to the hydrogen supply information, including:

[0067] S21: Obtaining the initial hydrogen supply pressure, initial hydrogen supply temperature, final hydrogen supply pressure, final hydrogen supply temperature and total volume of the hydrogen cylinder of the hydrogen supply system;

[0068] S22: Calculate the hydrogen supply amount according to the hydrogen supply initial pressure, the hydrogen supply initial temperature, the hydrogen supply termination pressure, the hydrogen supply termination temperature and the total volume of the hydrogen cylinder of the hydrogen supply system.

[0069] Specifically, the total volume of the hydrogen cylinders in this embodiment is the sum of the volumes of all hydrogen cylinders, that is, the valves of the hydrogen cylinders used by default can all be opened normally.

[0070] Specifically, the hydrogen supply is calculated by the following formula:

[0071]

[0072] In the formula: g is the amount of hydrogen supplied, kg; M is the relative molecular mass of hydrogen, which is 2.016 g / mol; P1 is the initial pressure of hydrogen supply, MPa; T1 is the initial temperature of hydrogen supply, K; P2 is the end pressure of hydrogen supply, MPa; T2 is the end temperature of hydrogen supply, K; V is the total volume of the hydrogen cylinder, L; R is the gas constant, 0.0083145 [MPa·L / (mol·k)]; Z1 is the hydrogen compression factor under P1 and T1; Z2 is the hydrogen compression factor under P2 and T2.

[0073] Further, the hydrogen compression factor Z is calculated by the following formula:

[0074]

[0075] Where: P is pressure, MPa; T is temperature, K; υ ij is a constant, which can be set according to the preset υ ij Query the mapping relationship table between i and j.

[0076] Substitute the initial hydrogen supply pressure P1, initial hydrogen supply temperature T1, end hydrogen supply pressure P2, end hydrogen supply temperature T2 and the total volume V of the hydrogen cylinder into formulas (2) and (3) to obtain the hydrogen supply amount g.

[0077] S30: Based on a preset bottle valve status judgment rule, and according to the theoretical hydrogen consumption and the hydrogen supply amount, judging whether the bottle valve status of the hydrogen supply system is normal.

[0078] Specifically, according to the theoretical hydrogen consumption G and hydrogen supply g 供 , determine whether the status of the hydrogen supply system bottle valve is normal.

[0079] Specifically, step S30 determines whether the state of the hydrogen supply system bottle valve is normal based on the preset bottle valve state judgment rule and the theoretical hydrogen consumption and the hydrogen supply amount, including:

[0080] S31: Calculating the theoretical hydrogen consumption G and the hydrogen supply g 供 The difference between them is used to obtain the absolute value of the hydrogen difference △g.

[0081] Specifically, the absolute value of the hydrogen difference △g is calculated by the following formula:

[0082] Δg=|Gg| (4)

[0083] S32: Calculate the ratio between the absolute value of the hydrogen difference Δg and the theoretical hydrogen consumption G to obtain a supply-consumption deviation;

[0084] S33: When the supply-consumption deviation is greater than a preset deviation, it is determined that the state of the hydrogen supply system bottle valve is abnormal;

[0085] When the supply-consumption deviation is less than or equal to the preset deviation, it is determined that the status of the hydrogen supply system bottle valve is normal.

[0086] Specifically, the preset deviation is related to the set number of hydrogen bottles, which is Where N′ is the number of hydrogen bottles.

[0087] Specifically, for example, according to formula (1) in the first embodiment, the theoretical hydrogen consumption G is calculated to be 2.218 kg. At the same time, according to formulas (2) and (3), the hydrogen supply g is calculated to be 2.604 kg. Then, according to formula (4), the absolute value of the hydrogen difference △g is 0.386 kg. The supply-consumption deviation calculated by the ratio of the absolute value of the hydrogen difference △g to the theoretical hydrogen consumption G is 19.7%. The number of hydrogen bottles N′ is 8, and the pre-set deviation is It is 12.5%. Since 19.7% is greater than 12.5%, it is determined that the status of the hydrogen supply system bottle valve is abnormal.

[0088] Specifically, when the supply-consumption deviation is greater than a preset deviation in step S33, judging that the hydrogen supply system bottle valve state is abnormal includes:

[0089] S331: Calculate the ratio between the supply and consumption deviation and the preset deviation to obtain a deviation ratio;

[0090] S332: According to the deviation ratio, the number of bottle valves in abnormal status in the hydrogen supply system is obtained.

[0091] Specifically, the deviation ratio is rounded down to the nearest integer, which is the number of bottle valves in abnormal status in the hydrogen supply system.

[0092] For example, the supply-consumption deviation is 19.7%, the preset deviation is 12.5%, and the ratio between the supply-consumption deviation and the preset deviation is 1.576. 1.576 is rounded down to 1, that is, the number of bottle valves in abnormal status in the hydrogen supply system is 1.

[0093] Specifically, the method further includes:

[0094] S10′: obtaining the initial hydrogenation pressure, initial hydrogenation temperature, final hydrogenation pressure, final hydrogenation temperature and total volume of the hydrogen cylinder of the hydrogen supply system;

[0095] S20′: Calculate and obtain a theoretical hydrogenation amount according to the hydrogenation initial pressure, the hydrogenation initial temperature, the hydrogenation termination pressure, the hydrogenation termination temperature and the total volume of the hydrogen cylinder of the hydrogen supply system;

[0096] Specifically, referring to formulas (2) and (3), the theoretical hydrogenation amount can be obtained using the initial hydrogenation pressure, initial hydrogenation temperature, final hydrogenation pressure, final hydrogenation temperature and the total volume of the hydrogen cylinder.

[0097] S30′: Obtain the hydrogenation amount of the hydrogenation gun, and determine whether the status of the hydrogen supply system bottle valve is normal based on the theoretical hydrogenation amount and the hydrogenation amount of the hydrogenation gun.

[0098] Specifically, the amount of hydrogen added by the hydrogenation gun can be directly obtained through the hydrogenation gun, or can be manually configured after the hydrogenation is completed.

[0099] Specifically, in step S30′, judging whether the state of the bottle valve of the hydrogen supply system is normal according to the theoretical hydrogenation amount and the hydrogenation amount of the hydrogenation gun includes:

[0100] S31′: Calculate the difference between the theoretical hydrogenation amount and the hydrogenation amount of the hydrogenation gun to obtain the absolute value of the hydrogenation difference.

[0101] Specifically, the calculation method of the absolute value of the hydrogenation difference can refer to formula (4).

[0102] S32′: Calculate the ratio between the absolute value of the hydrogenation difference and the theoretical hydrogenation amount to obtain the hydrogenation deviation;

[0103] S33′: when the hydrogenation deviation is greater than the preset deviation, it is determined that the state of the hydrogen supply system bottle valve is abnormal;

[0104] When the hydrogenation deviation is less than or equal to the preset deviation, it is determined that the status of the hydrogen supply system bottle valve is normal.

[0105] Specifically, when the hydrogenation deviation is greater than the preset deviation in step S33′, judging that the state of the hydrogen supply system bottle valve is abnormal includes:

[0106] S331′: Calculate the ratio between the hydrogenation deviation and the preset deviation to obtain a hydrogenation deviation ratio;

[0107] S332: According to the hydrogenation deviation ratio, the number of bottle valves in abnormal status in the hydrogen supply system is obtained.

[0108] Specifically, the hydrogenation deviation ratio is rounded down to the nearest integer, which is the number of bottle valves in abnormal status in the hydrogen supply system.

[0109] For example, the hydrogenation deviation is 19.7%, the preset deviation is 12.5%, and the ratio between the hydrogenation deviation and the preset deviation is 1.576. 1.576 is rounded down to 1, that is, the number of bottle valves in abnormal status in the hydrogen supply system is 1.

[0110] Steps S10' to S30' may be used as verification steps of steps S10 to S30, or may be used as an independent judgment process.

[0111] It can be seen that in the above scheme, the theoretical hydrogen consumption is calculated by the battery information fed back by the fuel cell system, and the hydrogen supply is calculated by obtaining the hydrogen supply information fed back by the hydrogen supply system. The theoretical hydrogen consumption and hydrogen supply are used to judge whether the status of the hydrogen supply system bottle valve is normal. It is possible to timely discover whether the hydrogen supply system can meet the hydrogen supply, thereby improving the accuracy of identifying the status of the hydrogen supply system bottle valve and improving the safety and cruising range of the entire vehicle.

[0112] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0113] In one embodiment, if Figure 3 As shown, a device for determining the status of a hydrogen supply system bottle valve is provided, and the device for determining the status of a hydrogen supply system bottle valve corresponds one-to-one to the above-mentioned method for determining the status of a hydrogen supply system bottle valve. Figure 4 As shown, the hydrogen supply system bottle valve state judgment device includes: a first calculation module 101, a second calculation module 102, and a judgment module 103. The detailed description of each functional module is as follows:

[0114] The first calculation module 101 is used to obtain battery information fed back by the fuel cell system, and calculate the theoretical hydrogen consumption according to the battery information;

[0115] The second calculation module 102 is used to obtain hydrogen supply information fed back by the hydrogen supply system, and calculate the hydrogen supply amount according to the hydrogen supply information;

[0116] The judgment module 103 is used to judge whether the state of the bottle valve of the hydrogen supply system is normal based on the preset bottle valve state judgment rule and the theoretical hydrogen consumption and the hydrogen supply amount.

[0117] In one embodiment, the first calculation module 101 is specifically configured to:

[0118] Obtain the stack current, number of cells and battery operating time fed back by the fuel cell system;

[0119] Based on a preset theoretical hydrogen consumption calculation model, the theoretical hydrogen consumption is obtained according to the battery stack current, the number of battery cells and the battery operating time.

[0120] In one embodiment, the first calculation module 101 is specifically configured to:

[0121] Obtain the stack power fed back by the fuel cell system;

[0122] Based on a preset mapping relationship between the stack power and the theoretical hydrogen consumption, the theoretical hydrogen consumption is obtained according to the stack power.

[0123] In one embodiment, the second calculation module 102 is specifically configured to:

[0124] Obtain the initial hydrogen supply pressure, initial hydrogen supply temperature, final hydrogen supply pressure, final hydrogen supply temperature and total volume of the hydrogen cylinder of the hydrogen supply system;

[0125] The hydrogen supply amount is obtained by calculation based on the hydrogen supply initial pressure, the hydrogen supply initial temperature, the hydrogen supply termination pressure, the hydrogen supply termination temperature and the total volume of the hydrogen cylinder of the hydrogen supply system.

[0126] In one embodiment, the determination module 103 is specifically configured to:

[0127] Calculating the difference between the theoretical hydrogen consumption and the hydrogen supply to obtain an absolute value of the hydrogen difference;

[0128] Calculating the ratio between the absolute value of the hydrogen difference and the theoretical hydrogen consumption to obtain a supply-consumption deviation;

[0129] When the supply and consumption deviation is greater than the preset deviation, it is determined that the state of the hydrogen supply system bottle valve is abnormal;

[0130] When the supply-consumption deviation is less than or equal to the preset deviation, it is determined that the status of the hydrogen supply system bottle valve is normal.

[0131] In one embodiment, the determination module 103 is specifically configured to:

[0132] Calculating the ratio between the supply and consumption deviation and the preset deviation to obtain a deviation ratio;

[0133] According to the deviation ratio, the number of bottle valves in abnormal status in the hydrogen supply system is obtained.

[0134] In one embodiment, the second calculation module 102 is specifically configured to:

[0135] Obtain the initial hydrogenation pressure, initial hydrogenation temperature, final hydrogenation pressure, final hydrogenation temperature and total volume of the hydrogen cylinder of the hydrogen supply system;

[0136] The theoretical hydrogenation amount is calculated based on the initial hydrogenation pressure, the initial hydrogenation temperature, the hydrogenation end pressure, the hydrogenation end temperature and the total volume of the hydrogen cylinder of the hydrogen supply system;

[0137] In one embodiment, the determination module 103 is specifically configured to:

[0138] The hydrogenation amount of the hydrogenation gun is obtained, and whether the state of the bottle valve of the hydrogen supply system is normal is determined according to the theoretical hydrogenation amount and the hydrogenation amount of the hydrogenation gun.

[0139] In one embodiment, the determination module 103 is specifically configured to:

[0140] The difference between the theoretical hydrogenation amount and the hydrogenation amount of the hydrogenation gun is calculated to obtain an absolute value of the hydrogenation difference.

[0141] Calculating the ratio between the absolute value of the hydrogenation difference and the theoretical hydrogenation amount to obtain a hydrogenation deviation;

[0142] When the hydrogenation deviation is greater than the preset deviation, it is determined that the state of the hydrogen supply system bottle valve is abnormal;

[0143] When the hydrogenation deviation is less than or equal to the preset deviation, it is determined that the status of the hydrogen supply system bottle valve is normal.

[0144] In one embodiment, the determination module 103 is specifically configured to:

[0145] Calculating a ratio between the hydrogenation deviation and the preset deviation to obtain a hydrogenation deviation ratio;

[0146] According to the hydrogenation deviation ratio, the number of bottle valves in abnormal status in the hydrogen supply system is obtained.

[0147] The present invention provides a device for determining the state of a bottle valve of a hydrogen supply system. The device calculates the theoretical hydrogen consumption through battery information fed back by a fuel cell system, and calculates the hydrogen supply by acquiring hydrogen supply information fed back by the hydrogen supply system. The device determines whether the state of the bottle valve of the hydrogen supply system is normal through the theoretical hydrogen consumption and the hydrogen supply. The device can timely detect whether the hydrogen supply system can meet the hydrogen supply, thereby improving the accuracy of identifying the state of the bottle valve of the hydrogen supply system and improving the safety and cruising range of the entire vehicle.

[0148] For the specific definition of the hydrogen supply system bottle valve state judgment device, please refer to the definition of a hydrogen supply system bottle valve state judgment method mentioned above, which will not be repeated here. Each module in the above-mentioned hydrogen supply system bottle valve state judgment device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0149] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 4 As shown. The computer device includes a processor, a memory, a network interface and a database connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile and / or volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external client through a network connection. When the computer program is executed by the processor, it realizes the functions or steps on the service side of a method for determining the status of a bottle valve in a hydrogen supply system.

[0150] In one embodiment, a computer device is provided. The computer device may be a client, and its internal structure diagram may be as follows: Figure 5 As shown. The computer device includes a processor, a memory, a network interface, a display screen and an input device connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external server via a network connection. When the computer program is executed by the processor, it implements the functions or steps on the client side of a method for determining the status of a bottle valve in a hydrogen supply system.

[0151] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0152] Obtaining battery information fed back by the fuel cell system, and calculating theoretical hydrogen consumption according to the battery information;

[0153] Obtaining hydrogen supply information fed back by the hydrogen supply system, and calculating the hydrogen supply amount according to the hydrogen supply information;

[0154] Based on the preset bottle valve status judgment rule, and according to the theoretical hydrogen consumption and the hydrogen supply amount, it is judged whether the bottle valve status of the hydrogen supply system is normal.

[0155] Also perform the following steps:

[0156] Obtain the initial hydrogenation pressure, initial hydrogenation temperature, final hydrogenation pressure, final hydrogenation temperature and total volume of the hydrogen cylinder of the hydrogen supply system;

[0157] The theoretical hydrogenation amount is calculated based on the initial hydrogenation pressure, the initial hydrogenation temperature, the hydrogenation end pressure, the hydrogenation end temperature and the total volume of the hydrogen cylinder of the hydrogen supply system;

[0158] The hydrogenation amount of the hydrogenation gun is obtained, and whether the state of the bottle valve of the hydrogen supply system is normal is determined according to the theoretical hydrogenation amount and the hydrogenation amount of the hydrogenation gun.

[0159] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0160] Obtaining battery information fed back by the fuel cell system, and calculating theoretical hydrogen consumption according to the battery information;

[0161] Obtaining hydrogen supply information fed back by the hydrogen supply system, and calculating the hydrogen supply amount according to the hydrogen supply information;

[0162] Based on the preset bottle valve status judgment rule, and according to the theoretical hydrogen consumption and the hydrogen supply amount, it is judged whether the bottle valve status of the hydrogen supply system is normal.

[0163] Also perform the following steps:

[0164] Obtain the initial hydrogenation pressure, initial hydrogenation temperature, final hydrogenation pressure, final hydrogenation temperature and total volume of the hydrogen cylinder of the hydrogen supply system;

[0165] The theoretical hydrogenation amount is calculated based on the initial hydrogenation pressure, the initial hydrogenation temperature, the hydrogenation end pressure, the hydrogenation end temperature and the total volume of the hydrogen cylinder of the hydrogen supply system;

[0166] The hydrogenation amount of the hydrogenation gun is obtained, and whether the state of the bottle valve of the hydrogen supply system is normal is determined according to the theoretical hydrogenation amount and the hydrogenation amount of the hydrogenation gun.

[0167] It should be noted that the above functions or steps that can be implemented by the computer-readable storage medium or computer device can refer to the relevant descriptions on the server side and the client side in the aforementioned method embodiment. To avoid repetition, they will not be described one by one here.

[0168] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0169] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0170] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for judging the status of a hydrogen supply system bottle valve, characterized in that: include: Obtaining battery information fed back by the fuel cell system, and calculating theoretical hydrogen consumption according to the battery information; Obtaining hydrogen supply information fed back by the hydrogen supply system, and calculating the hydrogen supply amount according to the hydrogen supply information; Based on the preset bottle valve status judgment rule, and according to the theoretical hydrogen consumption and the hydrogen supply amount, it is judged whether the bottle valve status of the hydrogen supply system is normal.

2. A method for determining the status of a hydrogen supply system bottle valve according to claim 1, characterized in that: The obtaining of battery information fed back by the fuel cell system and calculating the theoretical hydrogen consumption according to the battery information includes: Obtain the stack current, number of cells and battery operating time fed back by the fuel cell system; Based on a preset theoretical hydrogen consumption calculation model, the theoretical hydrogen consumption is obtained according to the battery stack current, the number of battery cells and the battery operating time.

3. A method for determining the status of a hydrogen supply system bottle valve according to claim 1, characterized in that: The obtaining of battery information fed back by the fuel cell system and calculating the theoretical hydrogen consumption according to the battery information includes: Obtain the stack power fed back by the fuel cell system; Based on a preset mapping relationship between the stack power and the theoretical hydrogen consumption, the theoretical hydrogen consumption is obtained according to the stack power.

4. A method for determining the status of a hydrogen supply system bottle valve according to claim 1, characterized in that: The step of obtaining hydrogen supply information fed back by the hydrogen supply system and calculating the hydrogen supply amount according to the hydrogen supply information includes: Obtain the initial hydrogen supply pressure, initial hydrogen supply temperature, final hydrogen supply pressure, final hydrogen supply temperature and total volume of the hydrogen cylinder of the hydrogen supply system; The hydrogen supply amount is obtained by calculation based on the hydrogen supply initial pressure, the hydrogen supply initial temperature, the hydrogen supply termination pressure, the hydrogen supply termination temperature and the total volume of the hydrogen cylinder of the hydrogen supply system.

5. A method for determining the status of a hydrogen supply system bottle valve according to claim 1, characterized in that: The method of judging whether the state of the hydrogen supply system bottle valve is normal based on the preset bottle valve state judgment rule and the theoretical hydrogen consumption and the hydrogen supply amount includes: Calculating the difference between the theoretical hydrogen consumption and the hydrogen supply to obtain an absolute value of the hydrogen difference; Calculating the ratio between the absolute value of the hydrogen difference and the theoretical hydrogen consumption to obtain a supply-consumption deviation; When the supply and consumption deviation is greater than the preset deviation, it is determined that the state of the hydrogen supply system bottle valve is abnormal; When the supply-consumption deviation is less than or equal to the preset deviation, it is determined that the status of the hydrogen supply system bottle valve is normal.

6. A method for determining the status of a hydrogen supply system bottle valve according to claim 1, characterized in that: When the supply-consumption deviation is greater than a preset deviation, judging that the hydrogen supply system bottle valve state is abnormal includes: Calculating the ratio between the supply and consumption deviation and the preset deviation to obtain a deviation ratio; According to the deviation ratio, the number of bottle valves in abnormal status in the hydrogen supply system is obtained.

7. A method for determining the status of a hydrogen supply system bottle valve according to any one of claims 1 to 6, characterized in that: The method further comprises: Obtain the initial hydrogenation pressure, initial hydrogenation temperature, final hydrogenation pressure, final hydrogenation temperature and total volume of the hydrogen cylinder of the hydrogen supply system; The theoretical hydrogenation amount is calculated based on the initial hydrogenation pressure, the initial hydrogenation temperature, the hydrogenation end pressure, the hydrogenation end temperature and the total volume of the hydrogen cylinder of the hydrogen supply system; The hydrogenation amount of the hydrogenation gun is obtained, and whether the state of the bottle valve of the hydrogen supply system is normal is determined according to the theoretical hydrogenation amount and the hydrogenation amount of the hydrogenation gun.

8. A device for judging the status of a hydrogen supply system bottle valve, characterized in that: include: A first calculation module is used to obtain battery information fed back by the fuel cell system, and calculate the theoretical hydrogen consumption according to the battery information; A second calculation module is used to obtain hydrogen supply information fed back by the hydrogen supply system, and calculate the hydrogen supply amount according to the hydrogen supply information; The judgment module is used to judge whether the state of the bottle valve of the hydrogen supply system is normal based on the preset bottle valve state judgment rules and the theoretical hydrogen consumption and the hydrogen supply amount.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of a method for determining the state of a bottle valve of a hydrogen supply system as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of a method for determining the state of a bottle valve of a hydrogen supply system as described in any one of claims 1 to 7 are implemented.

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