Fault diagnosis method and apparatus for fuel cell vehicle, and storage medium and terminal

Abstract

A fault diagnosis method and apparatus for a fuel cell vehicle, and a storage medium and a terminal, which relate to the technical field of information processing, and mainly aim to solve the problem of the efficiency of troubleshooting of a shutdown cause of a fuel cell system being relatively low. The method mainly comprises: after receiving a detection result which indicates that the operation of a fuel cell system is a shutdown state, acquiring at least one of a condition trigger parameter of a vehicle control policy and fault information of a candidate associated object; determining a shutdown diagnosis result of the fuel cell system on the basis of the fault information and / or a matching result of the condition trigger parameter and the vehicle control policy, wherein the shutdown diagnosis result at least comprises one of a shutdown cause and a shutdown associated object; and on the basis of the shutdown diagnosis result, generating prompt information used for prompting a shutdown fault category, and sending the prompt information to a target terminal. The present application is mainly used for assisting in troubleshooting a shutdown cause of a fuel cell system.

Description

Fault diagnosis method and device, storage medium, and terminal for fuel cell vehicle

[0001] This application claims priority to the Chinese patent application filed with the Patent Office of China on July 24, 2023, with application number 202310908396.9, and invention name “Fault diagnosis method and device, storage medium, and terminal for fuel cell vehicles”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of fault detection technology and the field of fuel cell vehicles, and in particular to a fault diagnosis method and device, storage medium, and terminal for fuel cell vehicles. Background Art

[0003] As global environmental issues become increasingly prominent, clean energy vehicles are becoming the mainstream development direction of the automotive industry. As a type of clean energy device, hydrogen fuel cell vehicles utilize the core fuel cell technology of a chemical reaction between hydrogen and oxygen, activated by a catalyst, to generate electricity. The fuel cell system is the key energy supply subsystem that controls this chemical reaction and provides the electrical energy for vehicle operation. It plays a vital role in the overall powertrain of hydrogen fuel cell vehicles, and its proper operation directly impacts the overall vehicle's performance.

[0004] At present, the existing fault detection of hydrogen fuel cell vehicles can only identify whether the fuel cell system is operating normally or stopped, but cannot determine the specific reason why the fuel cell system stopped operating. In addition, there are many reasons that cause the fuel cell system to stop operating, which makes it more difficult to troubleshoot. It takes a lot of time to investigate the cause of the shutdown, resulting in low efficiency in troubleshooting the cause of the fuel cell system shutdown.

[0005] Application Contents

[0006] In view of this, the present application provides a fuel cell vehicle fault diagnosis method and device, storage medium, and terminal, the main purpose of which is to solve the problem of low efficiency in troubleshooting the causes of shutdown of existing fuel cell systems.

[0007] According to one aspect of the present application, a fault diagnosis method for a fuel cell vehicle is provided, comprising:

[0008] When receiving a detection result indicating that the fuel cell system is in a shutdown state, obtaining at least one of a condition trigger parameter of a vehicle control strategy and fault information of a candidate associated object;

[0009] Determining a shutdown diagnosis result of the fuel cell system based on a matching result between the fault information and / or the condition trigger parameter and a vehicle control strategy, wherein the shutdown diagnosis result includes at least one of a shutdown cause and a shutdown-related object, wherein the shutdown cause includes a vehicle control shutdown, a fault shutdown, and a shutdown due to other accidental reasons;

[0010] Prompt information indicating the type of shutdown fault is generated based on the shutdown diagnosis result, and the prompt information is sent to the target terminal.

[0011] Furthermore, the determining of the shutdown diagnosis result of the fuel cell system based on the matching result of the fault information and / or the condition trigger parameter with the vehicle control strategy includes:

[0012] Determining a first troubleshooting result based on the fault information, and if the first troubleshooting result includes a shutdown-related object, determining that the shutdown cause of the shutdown diagnosis result is a fault shutdown;

[0013] If the first troubleshooting result does not include a shutdown-related object, then determining a second troubleshooting result based on the matching result of the conditional trigger parameter and the vehicle control strategy; if the second troubleshooting result indicates that the shutdown cause is a vehicle control shutdown, then determining the shutdown cause of the shutdown diagnosis result as a vehicle control shutdown;

[0014] If the second screening result indicates that the shutdown cause is a non-vehicle controlled shutdown, then the shutdown cause of the shutdown diagnosis result is determined to be other accidental reasons.

[0015] Furthermore, if the first screening result does not include a shutdown-related object, determining a second screening result based on a matching result between the conditional trigger parameter and the vehicle control strategy includes:

[0016] If the first condition trigger parameter matches any matching condition in the fault and parameter mutation control strategy, a second troubleshooting result is generated to indicate that the parameter mutation has caused the vehicle to shut down;

[0017] If the second condition trigger parameter matches any matching condition in the energy control strategy, a second troubleshooting result is generated to characterize that the energy strategy causes the vehicle to be shut down.

[0018] Furthermore, the candidate shutdown-related objects include system objects and component objects, and determining the first troubleshooting result based on the fault information includes:

[0019] For the system object, if the fault level in the fault information is greater than a preset level threshold, the system object is determined as a shutdown-related object, and a first troubleshooting result is generated based on the fault information of the system object;

[0020] For the component object, if the fault type of the component object matches the shutdown-associated fault type, the component object is determined to be a shutdown-associated object, and a first troubleshooting result is generated based on the fault information of the component object.

[0021] Furthermore, before determining the shutdown diagnosis result of the fuel cell system based on the fault information and / or the matching result of the condition trigger parameter and the vehicle control strategy, the method further includes:

[0022] Acquiring historical shutdown maintenance data of the fuel cell system, and extracting component object maintenance data from the historical shutdown maintenance data;

[0023] The component object fault corresponding to the component object maintenance data is configured as a shutdown-related fault type.

[0024] Furthermore, the generating of prompt information for indicating the shutdown fault category based on the shutdown diagnosis result includes:

[0025] If the shutdown diagnosis result indicates that the entire vehicle is shut down, and the shutdown diagnosis result does not include a shutdown-related object, a prompt message indicating that the shutdown fault category is a first shutdown fault category is generated, where the first shutdown fault category indicates non-maintenance recovery;

[0026] If the shutdown diagnosis result indicates a fault, prompt information indicating that the shutdown fault category is a second shutdown fault category is generated, and the second shutdown fault category indicates maintenance-type recovery.

[0027] Furthermore, the method further comprises:

[0028] If the shutdown reason is other accidental reasons, then obtain the global fault information at the current moment;

[0029] sorting the global fault information according to the association level between the fault subject of the global fault information and the fuel cell system to obtain a candidate fault sequence;

[0030] Prompt information of a third shutdown fault category is generated based on the candidate fault sequence.

[0031] According to another aspect of the present application, a fault diagnosis device for a fuel cell vehicle is provided, comprising:

[0032] An acquisition module, configured to acquire conditional trigger parameters of the vehicle control strategy and fault information of candidate associated objects when receiving a detection result indicating that the fuel cell system is in a shutdown state;

[0033] a determination module, configured to determine a shutdown diagnosis result of the fuel cell system based on a matching result between the fault information and / or the conditional trigger parameter and a vehicle control strategy, wherein the shutdown diagnosis result includes at least one of a shutdown cause and a shutdown-related object, wherein the shutdown cause includes a vehicle control shutdown, a fault shutdown, and a shutdown due to other accidental reasons;

[0034] A generating module is used to generate prompt information indicating the type of shutdown fault based on the shutdown diagnosis result, and send the prompt information to the target terminal.

[0035] Furthermore, the determining module includes:

[0036] a first determining unit, configured to determine a first troubleshooting result based on the fault information, and if the first troubleshooting result includes a shutdown-related object, determine that the shutdown cause of the shutdown diagnosis result is a fault shutdown;

[0037] a second determining unit, configured to determine, if the first troubleshooting result does not include a shutdown-related object, a second troubleshooting result based on a matching result between the conditional trigger parameter and the vehicle control strategy, and if the second troubleshooting result indicates that the shutdown cause is a vehicle control shutdown, determine that the shutdown cause in the shutdown diagnosis result is a vehicle control shutdown;

[0038] The third determining unit is configured to determine that the shutdown cause in the shutdown diagnosis result is other accidental reasons if the second screening result indicates that the shutdown cause is a non-vehicle controlled shutdown.

[0039] Furthermore, in a specific application scenario, the second determining unit is specifically configured to generate a second troubleshooting result indicating that a parameter mutation has caused a vehicle control shutdown if the first condition trigger parameter matches any matching condition in the fault and parameter mutation control strategy;

[0040] If the second condition trigger parameter matches any matching condition in the energy control strategy, a second troubleshooting result is generated to characterize that the energy strategy causes the vehicle to be shut down.

[0041] Furthermore, in a specific application scenario, the first determining unit is specifically configured to, for the system object, determine the system object as a shutdown-related object if the fault level in the fault information is greater than a preset level threshold, and generate a first troubleshooting result based on the fault information of the system object;

[0042] For the component object, if the fault type of the component object matches the shutdown-associated fault type, the component object is determined to be a shutdown-associated object, and a first troubleshooting result is generated based on the fault information of the component object.

[0043] Furthermore, the device further comprises:

[0044] an extraction module, configured to obtain historical shutdown maintenance data of the fuel cell system and extract component object maintenance data from the historical shutdown maintenance data;

[0045] The configuration module is used to configure the component object fault corresponding to the component object maintenance data as a shutdown-related fault type.

[0046] Furthermore, the generation module includes:

[0047] a first generating unit configured to generate prompt information indicating that the shutdown fault category is a first shutdown fault category if the shutdown diagnosis result indicates that the entire vehicle is shut down and the shutdown diagnosis result does not include a shutdown-related object, wherein the first shutdown fault category indicates a non-maintenance recovery;

[0048] The second generating unit is configured to generate prompt information indicating that the shutdown fault category is a second shutdown fault category if the shutdown diagnosis result indicates a fault, and the second shutdown fault category indicates maintenance-type recovery.

[0049] Furthermore, the device further comprises:

[0050] The acquisition module is further configured to acquire global fault information at the current moment if the shutdown reason is other accidental reasons;

[0051] a sorting module, configured to sort the global fault information according to the association level between the fault subject of the global fault information and the fuel cell system, to obtain a candidate fault sequence;

[0052] A generating module is used to generate prompt information of a third shutdown fault category based on the candidate fault sequence.

[0053] According to another aspect of the present application, a storage medium is provided, in which at least one executable instruction is stored. The executable instruction enables a processor to execute operations corresponding to the above-mentioned fuel cell vehicle fault diagnosis method.

[0054] According to another aspect of the present application, there is provided a terminal, comprising: a processor, a memory, a communication interface, and a communication bus, wherein the processor, the memory, and the communication interface communicate with each other via the communication bus;

[0055] The memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute operations corresponding to the above-mentioned fuel cell vehicle fault diagnosis method.

[0056] By means of the above technical solution, the technical solution provided by the embodiment of the present application has at least the following advantages:

[0057] The present application provides a fault diagnosis method and device, storage medium, and terminal for a fuel cell vehicle. In an embodiment of the present application, when a fuel cell system operation detection result is received indicating a shutdown state, at least one of the conditional trigger parameters of the vehicle control strategy and the fault information of a candidate associated object is obtained; a shutdown diagnosis result of the fuel cell system is determined based on the fault information and / or the matching result between the conditional trigger parameters and the vehicle control strategy, wherein the shutdown diagnosis result includes at least one of the shutdown cause and the shutdown associated object, wherein the shutdown cause includes vehicle control shutdown, fault shutdown, and other accidental shutdown reasons; and a prompt message indicating the shutdown fault category is generated based on the shutdown diagnosis result, and the prompt message is sent to a target terminal. This method greatly reduces the time and difficulty of troubleshooting the cause of the fuel cell system shutdown, while ensuring the accuracy of the troubleshooting, thereby greatly improving the efficiency of troubleshooting the cause of the fuel cell system shutdown.

[0058] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0060] FIG1 shows a flow chart of a fault diagnosis method for a fuel cell vehicle provided in an embodiment of the present application;

[0061] FIG2 shows a flow chart of another fuel cell vehicle fault diagnosis method provided in an embodiment of the present application;

[0062] FIG3 shows a block diagram of a fault diagnosis device for a fuel cell vehicle provided in an embodiment of the present application;

[0063] FIG4 shows a schematic structural diagram of a terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0065] Existing fault detection for hydrogen fuel cell vehicles can only identify whether the fuel cell system is operating normally or stopped, but cannot determine the specific cause of the fuel cell system stopping. In addition, there are many reasons for the fuel cell system to stop operating, which increases the difficulty of troubleshooting and requires a lot of time to troubleshoot the cause of the shutdown, resulting in low efficiency in troubleshooting the cause of the fuel cell system shutdown. The embodiment of the present application provides a fault diagnosis method for fuel cell vehicles, as shown in Figure 1, the method includes:

[0066] 101. When a fuel cell system operation detection result is received indicating a shutdown state, conditional trigger parameters of a vehicle control strategy and fault information of candidate associated objects are obtained.

[0067] In the embodiments of the present application, the fuel cell system is a subsystem of the fuel cell vehicle power system of a hydrogen fuel cell vehicle. The fuel cell system can be tested in either the vehicle development and testing scenario or the normal use scenario of the vehicle. The operating state of the fuel cell system is affected not only by the status of its own components, but also by the vehicle's control strategy and the operating state of other related systems or components. For example, failures in the vehicle's power battery, motor, power supply, etc. may cause the fuel cell system to shut down, while failures in other components may also cause the fuel cell system to shut down due to load reduction. Therefore, the cause of a fuel cell shutdown cannot be determined intuitively. It is necessary to analyze the relevant parameters of the vehicle control and the fault information of other systems or components that may cause the fuel cell system to shut down to determine the specific cause of the fuel cell system shutdown. The vehicle control strategy includes multiple matching conditions that can trigger the vehicle control. The conditional trigger parameters are parameters corresponding to these matching conditions. For example, the charge ratio (SOC) and temperature of the component object are conditional trigger parameters. When these parameters meet the matching conditions in the vehicle control strategy, the vehicle control system will issue a control instruction to the fuel cell system to instruct it to shut down. Among them, candidate associated objects are systems or components that, based on the association relationship between systems and historical experience, will cause the fuel cell system to shut down if they fail. Therefore, it is necessary to obtain fault information of the candidate associated objects as a basis for cause analysis.

[0068] It should be noted that the conditional trigger parameters are used as the basis for judging the execution of vehicle control, rather than the shutdown control instructions sent by the vehicle controller. This is because during the vehicle development and testing phase, there are errors in the vehicle control strategy. If the shutdown control instructions are used as the basis for judgment, the errors in the vehicle control strategy cannot be discovered. For example, a lithium battery failure causes a shutdown, which should not trigger the control of the vehicle. However, due to the strategy error, the vehicle controller also issues a shutdown instruction. If the vehicle control situation is judged first at this time, the shutdown cause is directly determined to be the vehicle control shutdown, and the real cause of the shutdown - lithium battery failure - is not found.

[0069] 102. Determine a shutdown diagnosis result of the fuel cell system based on a matching result between the fault information and / or the condition trigger parameter and a vehicle control strategy.

[0070] In an embodiment of the present application, the shutdown diagnosis result includes at least one of the shutdown cause and the shutdown associated object, and the shutdown cause includes vehicle control shutdown, fault shutdown, and other occasional reasons. Since the main reasons for the shutdown of the fuel cell system include vehicle control shutdown and fault shutdown, the specific cause is identified based on the fault information and the condition trigger parameter. Among them, if any object in the candidate associated object fails, it indicates that the current fuel cell system shutdown state is caused by the fault cause, and the specific fault subject, that is, the shutdown associated object, can be determined based on the candidate associated object corresponding to the fault information. If the condition trigger parameter matches the vehicle control strategy, it indicates that before the fuel cell system shuts down, the vehicle controller's strategy for shutting down the fuel cell system has been triggered, and the vehicle controller has issued a shutdown instruction to the fuel cell system. It can be judged that the current shutdown cause is caused by the control of the vehicle controller, and the triggering of the vehicle control strategy can be determined by which component based on the collection object corresponding to the condition trigger parameter. If neither of the two reasons is met, it indicates that the current shutdown is not caused by the control of the vehicle controller or the failure of the candidate associated object, but is caused by unconventional reasons, such as control strategy errors in the development and testing phase, which is listed as other accidental reasons for shutdown.

[0071] It should be noted that there is no execution order relationship between the confirmation process of the fault information and the confirmation process based on the matching result of the conditional trigger parameters and the whole vehicle control strategy, and only one of them can be confirmed. For example, if a fault shutdown is confirmed first, then the matching of the conditional trigger parameters and the whole vehicle control strategy can be omitted, and the shutdown cause can be directly confirmed as a fault shutdown. For another example, if the whole vehicle control shutdown is confirmed first, then the fault information can be omitted, and the shutdown cause can be directly confirmed as a whole vehicle control shutdown. The fault information can also be further confirmed, and if it is a fault shutdown, it can be confirmed as a fault shutdown. The confirmation strategy for the shutdown cause can be set according to specific application requirements, and the embodiments of the present application do not make specific limitations. By matching the fault information of the candidate associated objects and the conditional trigger parameters with the whole vehicle control strategy, the specific cause of the fuel cell system shutdown can be distinguished, and the specific shutdown associated object that caused the fault shutdown can be confirmed, thereby providing an accurate reference basis for subsequent maintenance and troubleshooting.

[0072] 103. Generate prompt information indicating a shutdown fault category based on the shutdown diagnosis result, and send the prompt information to a target terminal.

[0073] In the embodiment of the present application, after confirming the shutdown diagnosis result, in order to further improve the efficiency of troubleshooting, the matching shutdown fault category of the current shutdown is determined based on the shutdown diagnosis result. For example, if the whole vehicle is shut down, it may not require personnel to repair specific components, and only requires operations such as restarting the vehicle. The shutdown fault category can be set to a lower level category; if it is shut down due to a fault, it is likely that professionals will need to repair specific components. The shutdown fault category can be set to a higher level category, and a prompt message can be sent to the target terminal, where the target terminal can be a display terminal in the vehicle, the owner's mobile terminal, or a maintenance person bound to the vehicle, a test terminal developed by the vehicle, etc., which is not specifically limited in the embodiment of the present application. In addition to the shutdown fault category, the content of the prompt message can also include comprehensive information such as the cause of the shutdown and the location of the fault. For example, "the fuel cell system itself is faulty and causes the fuel cell system to shut down. The fault name is: A. The shutdown fault category is the second shutdown fault category." This embodiment of the present application does not make specific limitations.

[0074] It should be noted that by classifying shutdown failures, more accurate response suggestions can be provided to vehicle drivers and vehicle maintenance personnel, making the direction of cause investigation clearer and reducing the investigation time, thereby effectively improving the efficiency of investigating the causes of fuel cell system shutdowns.

[0075] In one embodiment of the present application, for further explanation and limitation, as shown in FIG2 , the step of determining the shutdown diagnosis result of the fuel cell system based on the matching result of the fault information and / or the condition trigger parameter with the vehicle control strategy includes:

[0076] 201. Determine a first troubleshooting result based on the fault information. If the first troubleshooting result includes a shutdown-related object, determine that the shutdown cause of the shutdown diagnosis result is a fault shutdown.

[0077] 202. If the first screening result does not include a shutdown-related object, the second screening result is determined based on the matching result of the conditional trigger parameter and the vehicle control strategy. If the second screening result indicates that the shutdown cause is a vehicle control shutdown, the shutdown cause of the shutdown diagnosis result is determined to be a vehicle control shutdown.

[0078] 203. If the second screening result indicates that the shutdown cause is a non-vehicle controlled shutdown, then determine that the shutdown cause of the shutdown diagnosis result is other accidental reasons.

[0079] In the embodiment of the present application, fault information is prioritized. If the first screening result includes a shutdown-related object, indicating that there is an object among the candidate related objects that has caused the fuel cell system to shut down due to a fault, the shutdown cause is determined to be a fault shutdown. If the first screening result does not include a shutdown-related object, the acquired conditional trigger parameters are further matched with the matching conditions in the vehicle control strategy. If the matching result indicates that the conditional trigger parameters have triggered the vehicle controller's control action on the fuel cell, the shutdown cause is determined to be a vehicle control shutdown. If the matching result indicates that the conditional trigger parameters have not triggered the vehicle controller's control action on the fuel cell, indicating that the shutdown cause is neither a fault shutdown nor a vehicle control shutdown, the shutdown cause is determined to be a shutdown due to other incidental reasons.

[0080] It should be noted that there may be situations where a fault and vehicle control issues occur simultaneously. For example, if the hydrogen system fails, the hydrogen system controller sends a fault report to the vehicle, and the vehicle controller sends a shutdown control command to the fuel cell system based on the received fault report. During this process, although the fuel cell system shutdown action is based on the vehicle control command, the root cause is still the fault. Therefore, the fault is prioritized for troubleshooting to further improve the accuracy of troubleshooting.

[0081] In one embodiment of the present application, for further explanation and limitation, the step of determining the second screening result based on the matching result of the conditional trigger parameter and the vehicle control strategy includes:

[0082] If the first condition trigger parameter matches any matching condition in the fault and parameter mutation control strategy, a second troubleshooting result is generated to indicate that the parameter mutation has caused the vehicle to shut down;

[0083] If the second condition trigger parameter matches any matching condition in the energy control strategy, a second troubleshooting result is generated to characterize that the energy strategy causes the vehicle to be shut down.

[0084] In the embodiment of the present application, the vehicle control strategy includes an energy control strategy and a fault and parameter mutation control strategy. The conditional trigger parameters include a first conditional trigger parameter and a second conditional trigger parameter, wherein the generation time of the first conditional trigger parameter is earlier than the generation time of the second conditional trigger parameter, that is, assuming that the generation time of the second conditional trigger parameter is T moment, the generation time of the first conditional trigger parameter is T-1 moment. Since parameter mutation is an occasional event, for example, the rechargeable current, the maximum hydrogen leakage, etc., may suddenly change or be lost in an instant, but this state is not continuous and may be restored after the fuel cell system is shut down. The state of the parameters that the energy control strategy needs to match will last for a period of time. Therefore, the parameters used for energy control strategy matching can collect the parameters at the time of fuel cell shutdown or the time close to the shutdown time, that is, the second conditional trigger parameter, and the parameters of the parameter mutation strategy need to be matched with the parameters generated before the shutdown, that is, the first conditional trigger parameter and the matching conditions in the fault and parameter mutation control strategy.

[0085] In one embodiment of the present application, for further explanation and limitation, the step of determining a first troubleshooting result based on the fault information includes:

[0086] For the system object, if the fault level in the fault information is greater than a preset level threshold, the system object is determined as a shutdown-related object, and a first troubleshooting result is generated based on the fault information of the system object;

[0087] For the component object, if the fault type of the component object matches the shutdown-associated fault type, the component object is determined to be a shutdown-associated object, and a first troubleshooting result is generated based on the fault information of the component object.

[0088] In an embodiment of the present application, candidate shutdown-related objects include system objects and component objects. Fault information includes fault level and fault type. For systemic faults, the fault information will correspond to a specific fault level, and only faults of higher levels will cause the fuel cell system to shut down. For example, the fault levels of the hydrogen system and the fuel cell system are divided into level one, level two, and level three, with increasing severity. When a level two or level three fault occurs in the hydrogen system or the fuel cell system, the fuel cell system will shut down, but a level one fault will not cause the fuel cell system to shut down. Therefore, it is necessary to determine, for system-type faults, whether it is related to the shutdown of the fuel cell system simply because there is a fault, but to determine it in combination with the level of the fault. For component faults, not all component faults will cause shutdowns. For example, a fault of a lithium battery with less correlation with energy supply performance will not cause a shutdown of the fuel cell system. Therefore, it is necessary to determine whether the type of fault that occurs is related to the shutdown of the fuel cell system in combination with the specific type of fault, so as to determine whether the shutdown is caused by the fault of this component.

[0089] In one embodiment of the present application, for further explanation and limitation, before determining the shutdown diagnosis result of the fuel cell system based on the fault level and / or fault type, the matching result of the condition trigger parameter and the vehicle control strategy, the method further includes:

[0090] Acquiring historical shutdown maintenance data of the fuel cell system, and extracting component object maintenance data from the historical shutdown maintenance data;

[0091] The component object fault corresponding to the component object maintenance data is configured as a shutdown-related fault type.

[0092] In the embodiment of the present application, since the failure of a component does not necessarily cause the fuel cell system to shut down, it is necessary to pre-classify and sort out the component failure types that can cause the fuel cell system to shut down based on the historical shutdown maintenance data, and organize these failure types into a fault list for summary. Among them, the failure type includes different fault names, such as temperature failure, charging failure, etc., and also includes different fault degrees corresponding to the same fault name. Taking lithium batteries as an example, in the energy flow direction of the whole vehicle, the electricity generated by the fuel cell system can be supplied to the whole vehicle and can also be used to charge lithium batteries. If a lithium battery fails, the fuel cell system may need to shut down, but what specific types of failures and what degree of failures will cause the shutdown, it is necessary to extract more accurate data from the historical maintenance data, so as to make an accurate judgment on the fuel cell system shutdown caused by the components.

[0093] In one embodiment of the present application, for further explanation and limitation, the step of generating prompt information indicating the shutdown fault category based on the shutdown diagnosis result includes:

[0094] If the shutdown diagnosis result indicates that the entire vehicle is under control shutdown, and the shutdown diagnosis result does not include a shutdown-related object, generating prompt information indicating that the shutdown fault category is a first shutdown fault category;

[0095] If the shutdown diagnosis result indicates a fault, prompt information indicating that the shutdown fault category is a second shutdown fault category is generated.

[0096] In an embodiment of the present application, the first shutdown fault category represents non-maintenance recovery, and the second shutdown fault category represents maintenance recovery. When the fuel cell system shuts down, it may be a situation where there is a fault that requires maintenance, such as a fuel cell system, hydrogen system fault, lithium battery fault, etc., or it may be a situation where no maintenance intervention is required, such as a situation that can be solved by injecting hydrogen, restarting the car, etc. Therefore, the method of resuming operation can be classified according to whether there is a fault in the current vehicle. By classifying, situations that require maintenance intervention and those that do not require maintenance intervention are distinguished, so that the vehicle driver or troubleshooter can promptly clarify the method of operation recovery, thereby reducing the consumption of troubleshooting time and improving troubleshooting efficiency.

[0097] In one embodiment of the present application, for further explanation and limitation, the method further includes:

[0098] If the shutdown reason is other accidental reasons, then obtain the global fault information at the current moment;

[0099] sorting the global fault information according to the association level between the fault subject of the global fault information and the fuel cell system to obtain a candidate fault sequence;

[0100] Prompt information of a third shutdown fault category is generated based on the candidate fault sequence.

[0101] In an embodiment of the present application, if the shutdown is caused by other accidental reasons, indicating that the shutdown cause cannot be identified based solely on the fault information of the candidate associated objects, the global fault information reported by each detection system of the vehicle can be obtained to ensure the comprehensiveness of the fault investigation. For the convenience of fault viewing, when there is a lot of fault information, the fault location and the correlation with the fuel cell system can be sorted from large to small to obtain a candidate fault sequence. Among them, the third shutdown fault category is used to characterize the recovery of key maintenance types that require professional maintenance personnel to intervene and analyze. If a shutdown associated object is confirmed from the candidate fault sequence after analysis, the candidate associated object can be updated based on the shutdown associated object.

[0102] The present application provides a fault diagnosis method for a fuel cell vehicle. When a fuel cell system operation detection result is received indicating a shutdown state, the embodiment of the present application obtains at least one of a conditional trigger parameter of the vehicle control strategy and fault information of a candidate associated object; determines a shutdown diagnosis result of the fuel cell system based on the fault information and / or the matching result between the conditional trigger parameter and the vehicle control strategy, wherein the shutdown diagnosis result includes at least one of a shutdown cause and a shutdown associated object, wherein the shutdown cause includes a vehicle control shutdown, a fault shutdown, or a shutdown due to other incidental reasons; and generates a prompt message indicating the shutdown fault category based on the shutdown diagnosis result, and sends the prompt message to a target terminal. This method greatly reduces the time and difficulty of troubleshooting the cause of the fuel cell system shutdown, while ensuring the accuracy of the troubleshooting, thereby greatly improving the efficiency of troubleshooting the cause of the fuel cell system shutdown.

[0103] Furthermore, as an implementation of the method shown in FIG1 , an embodiment of the present application provides a fault diagnosis device for a fuel cell vehicle, as shown in FIG3 , the device comprising:

[0104] An acquisition module 31 is configured to acquire conditional trigger parameters of the vehicle control strategy and fault information of candidate associated objects when receiving a detection result indicating that the fuel cell system is in a shutdown state;

[0105] a determination module 32 for determining a shutdown diagnosis result of the fuel cell system based on the fault information and / or a matching result between the conditional trigger parameter and the vehicle control strategy, wherein the shutdown diagnosis result includes at least one of a shutdown cause and a shutdown-related object, wherein the shutdown cause includes a vehicle control shutdown, a fault shutdown, and a shutdown due to other accidental reasons;

[0106] The generating module 33 is configured to generate prompt information indicating a shutdown fault category based on the shutdown diagnosis result, and send the prompt information to a target terminal.

[0107] Furthermore, the determining module 32 includes:

[0108] a first determining unit, configured to determine a first troubleshooting result based on the fault information, and if the first troubleshooting result includes a shutdown-related object, determine that the shutdown cause of the shutdown diagnosis result is a fault shutdown;

[0109] a second determining unit, configured to determine, if the first troubleshooting result does not include a shutdown-related object, a second troubleshooting result based on a matching result between the conditional trigger parameter and the vehicle control strategy, and if the second troubleshooting result indicates that the shutdown cause is a vehicle control shutdown, determine that the shutdown cause in the shutdown diagnosis result is a vehicle control shutdown;

[0110] The third determining unit is configured to determine that the shutdown cause in the shutdown diagnosis result is other accidental reasons if the second screening result indicates that the shutdown cause is a non-vehicle controlled shutdown.

[0111] Furthermore, in a specific application scenario, the second determining unit is specifically configured to generate a second troubleshooting result indicating that a parameter mutation has caused a vehicle control shutdown if the first condition trigger parameter matches any matching condition in the fault and parameter mutation control strategy;

[0112] If the second condition trigger parameter matches any matching condition in the energy control strategy, a second troubleshooting result is generated to characterize that the energy strategy causes the vehicle to be shut down.

[0113] Furthermore, in a specific application scenario, the first determining unit is specifically configured to, for the system object, determine the system object as a shutdown-related object if the fault level in the fault information is greater than a preset level threshold, and generate a first troubleshooting result based on the fault information of the system object;

[0114] For the component object, if the fault type of the component object matches the shutdown-associated fault type, the component object is determined to be a shutdown-associated object, and a first troubleshooting result is generated based on the fault information of the component object.

[0115] Furthermore, the device further comprises:

[0116] an extraction module, configured to obtain historical shutdown maintenance data of the fuel cell system and extract component object maintenance data from the historical shutdown maintenance data;

[0117] The configuration module is used to configure the component object fault corresponding to the component object maintenance data as a shutdown-related fault type.

[0118] Furthermore, the generating module 33 includes:

[0119] a first generating unit configured to generate prompt information indicating that the shutdown fault category is a first shutdown fault category if the shutdown diagnosis result indicates that the entire vehicle is shut down and the shutdown diagnosis result does not include a shutdown-related object, wherein the first shutdown fault category indicates a non-maintenance recovery;

[0120] The second generating unit is configured to generate prompt information indicating that the shutdown fault category is a second shutdown fault category if the shutdown diagnosis result indicates a fault, and the second shutdown fault category indicates maintenance-type recovery.

[0121] Furthermore, the device further comprises:

[0122] The acquisition module 31 is further configured to acquire global fault information at the current moment if the shutdown reason is other accidental reasons;

[0123] a sorting module, configured to sort the global fault information according to the association level between the fault subject of the global fault information and the fuel cell system, to obtain a candidate fault sequence;

[0124] A generating module is used to generate prompt information of a third shutdown fault category based on the candidate fault sequence.

[0125] The present application provides a fault diagnosis device for a fuel cell vehicle. When receiving a fuel cell system shutdown detection result, the present application embodiment obtains at least one of a conditional trigger parameter of the vehicle control strategy and fault information of a candidate associated object; determines a shutdown diagnosis result of the fuel cell system based on the fault information and / or the matching result between the conditional trigger parameter and the vehicle control strategy, wherein the shutdown diagnosis result includes at least one of a shutdown cause and a shutdown associated object, wherein the shutdown cause includes a vehicle control shutdown, a fault shutdown, or a shutdown due to other incidental reasons; and generates a prompt message indicating the shutdown fault category based on the shutdown diagnosis result, and sends the prompt message to a target terminal. This greatly reduces the time and difficulty of troubleshooting the cause of the fuel cell system shutdown, while ensuring the accuracy of the troubleshooting, thereby greatly improving the efficiency of troubleshooting the cause of the fuel cell system shutdown.

[0126] According to one embodiment of the present application, a storage medium is provided, wherein the storage medium stores at least one executable instruction. The computer-executable instruction can execute the fault diagnosis method for a fuel cell vehicle in any of the above-mentioned method embodiments.

[0127] FIG4 shows a schematic structural diagram of a terminal provided according to an embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the terminal.

[0128] As shown in FIG. 4 , the terminal may include a processor 402 , a communications interface 404 , a memory 406 , and a communication bus 408 .

[0129] The processor 402 , the communication interface 404 , and the memory 406 communicate with each other via a communication bus 408 .

[0130] The communication interface 404 is used to communicate with other devices such as clients or other servers.

[0131] The processor 402 is configured to execute the program 410 , and specifically to execute the relevant steps in the above-mentioned embodiment of the fault diagnosis method for a fuel cell vehicle.

[0132] Specifically, the program 410 may include program codes, which include computer operation instructions.

[0133] Processor 402 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application. The one or more processors included in the terminal may be processors of the same type, such as one or more CPUs, or may be processors of different types, such as one or more CPUs and one or more ASICs.

[0134] The memory 406 is used to store the program 410. The memory 406 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0135] The program 410 may be specifically configured to cause the processor 402 to perform the following operations:

[0136] When receiving a detection result indicating that the fuel cell system is in a shutdown state, obtaining at least one of a condition trigger parameter of a vehicle control strategy and fault information of a candidate associated object;

[0137] Determining a shutdown diagnosis result of the fuel cell system based on a matching result between the fault information and / or the condition trigger parameter and a vehicle control strategy, wherein the shutdown diagnosis result includes at least one of a shutdown cause and a shutdown-related object, wherein the shutdown cause includes a vehicle control shutdown, a fault shutdown, and a shutdown due to other accidental reasons;

[0138] Prompt information indicating the type of shutdown fault is generated based on the shutdown diagnosis result, and the prompt information is sent to the target terminal.

[0139] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices. Alternatively, they can be implemented using program code executable by the computing device, so that they can be stored in a storage device and executed by the computing device. In some cases, the steps shown or described can be performed in a different order than herein, or they can be made into separate integrated circuit modules, or multiple modules or steps can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0140] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A method for diagnosing a fault of a fuel cell vehicle, wherein: include: When receiving a detection result indicating that the fuel cell system is in a shutdown state, obtaining at least one of a condition trigger parameter of a vehicle control strategy and fault information of a candidate associated object; Determining a shutdown diagnosis result of the fuel cell system based on the matching result of the fault information and / or the condition trigger parameter and the vehicle control strategy, wherein the shutdown diagnosis result includes at least one of a shutdown cause and a shutdown associated object, and the shutdown cause includes a vehicle control shutdown, a fault shutdown, and a shutdown due to other accidental reasons; Prompt information indicating the type of shutdown fault is generated based on the shutdown diagnosis result, and the prompt information is sent to the target terminal.

2. The method according to claim 1, wherein: The determining of the shutdown diagnosis result of the fuel cell system based on the matching result of the fault information and / or the condition trigger parameter with the vehicle control strategy includes: Determine a first troubleshooting result based on the fault information, and if the first troubleshooting result includes a shutdown-related object, determine that the shutdown cause of the shutdown diagnosis result is a fault shutdown; If the first troubleshooting result does not include a shutdown-related object, then determining a second troubleshooting result based on the matching result of the conditional trigger parameter and the vehicle control strategy, and if the second troubleshooting result indicates that the shutdown cause is a vehicle control shutdown, then determining that the shutdown cause of the shutdown diagnosis result is a vehicle control shutdown; If the second screening result indicates that the shutdown cause is a non-vehicle controlled shutdown, then the shutdown cause of the shutdown diagnosis result is determined to be other accidental reasons.

3. The method according to claim 2, wherein: The vehicle control strategy includes an energy control strategy, a fault and parameter mutation control strategy, the condition trigger parameter includes a first condition trigger parameter and a second condition trigger parameter, and if the first screening result does not include a shutdown associated object, then the second screening result is determined based on the matching result of the condition trigger parameter and the vehicle control strategy, including: If the first condition trigger parameter matches any matching condition in the fault and parameter mutation control strategy, a second troubleshooting result is generated for characterizing that the parameter mutation causes the whole vehicle control shutdown; If the second condition trigger parameter matches any matching condition in the energy control strategy, a second troubleshooting result is generated to characterize that the energy strategy causes the whole vehicle to be controlled and shut down.

4. The method according to claim 2, wherein: The fault information should include the fault level and fault type, the candidate shutdown-related objects include system objects and component objects, and the first troubleshooting result determined based on the fault information includes: For the system object, if the fault level in the fault information is greater than a preset level threshold, the system object is determined as a shutdown-related object, and a first troubleshooting result is generated based on the fault information of the system object; For the component object, if the fault type of the component object is associated with the shutdown fault type If a match is found, the component object is determined as a shutdown-related object, and a first troubleshooting result is generated based on the fault information of the component object.

5. The method according to claim 1, wherein: Before determining the shutdown diagnosis result of the fuel cell system based on the matching result of the fault information and / or the condition trigger parameter and the vehicle control strategy, the method further includes: Acquire historical shutdown maintenance data of the fuel cell system, and extract component object maintenance data from the historical shutdown maintenance data; The component object fault corresponding to the component object maintenance data is configured as a shutdown associated fault type.

6. The method according to any one of claims 1, wherein: The generating of prompt information for indicating the shutdown fault category based on the shutdown diagnosis result includes: If the shutdown diagnosis result indicates that the whole vehicle is shut down, and the shutdown diagnosis result does not include a shutdown-related object, a prompt message indicating that the shutdown fault category is a first shutdown fault category is generated, and the first shutdown fault category indicates non-maintenance recovery; If the shutdown diagnosis result indicates a fault, prompt information indicating that the shutdown fault category is a second shutdown fault category is generated, and the second shutdown fault category indicates maintenance-type recovery.

7. The method according to any one of claims 1 to 6, wherein: The method further comprises: If the shutdown reason is other accidental reasons, then obtain the global fault information at the current moment; sorting the global fault information according to the association level between the fault subject of the global fault information and the fuel cell system to obtain a candidate fault sequence; Prompt information of a third shutdown fault category is generated based on the candidate fault sequence.

8. A fault diagnosis device for a fuel cell vehicle, wherein: include: An acquisition module, for acquiring conditional trigger parameters of the vehicle control strategy and fault information of candidate associated objects when receiving a detection result that the fuel cell system is in a shutdown state; A determination module, configured to determine a shutdown diagnosis result of the fuel cell system based on the fault information and / or the matching result of the condition trigger parameter and the vehicle control strategy, wherein the shutdown diagnosis result includes at least one of a shutdown cause and a shutdown associated object, and the shutdown cause includes vehicle control shutdown, fault shutdown, and other accidental reasons for shutdown; A generating module is used to generate prompt information indicating the type of shutdown fault based on the shutdown diagnosis result, and send the prompt information to the target terminal.

9. A storage medium, wherein at least one executable instruction is stored in the storage medium, and the executable instruction enables a processor to execute an operation corresponding to the fault diagnosis method for a fuel cell vehicle as described in any one of claims 1 to 7.

10. A terminal, comprising: A processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform operations corresponding to the fault diagnosis method for a fuel cell vehicle as described in any one of claims 1-7.

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