CN117067914A - Fault diagnosis method and device for fuel cell automobile, storage medium and terminal - Google Patents
Fault diagnosis method and device for fuel cell automobile, storage medium and terminal Download PDFInfo
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- CN117067914A CN117067914A CN202310908396.9A CN202310908396A CN117067914A CN 117067914 A CN117067914 A CN 117067914A CN 202310908396 A CN202310908396 A CN 202310908396A CN 117067914 A CN117067914 A CN 117067914A
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- 239000000446 fuel Substances 0.000 title claims abstract description 130
- 238000003745 diagnosis Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000011217 control strategy Methods 0.000 claims abstract description 60
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000012423 maintenance Methods 0.000 claims description 35
- 238000013024 troubleshooting Methods 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 16
- 230000035772 mutation Effects 0.000 claims description 15
- 238000011084 recovery Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 4
- 238000011835 investigation Methods 0.000 abstract description 7
- 230000010365 information processing Effects 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 12
- 239000001257 hydrogen Substances 0.000 description 12
- 229910052739 hydrogen Inorganic materials 0.000 description 12
- 230000000875 corresponding effect Effects 0.000 description 11
- 230000008439 repair process Effects 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 238000012163 sequencing technique Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011981 development test Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0053—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to fuel cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Human Computer Interaction (AREA)
- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a fault diagnosis method and device for a fuel cell automobile, a storage medium and a terminal, relates to the technical field of information processing, and mainly aims to solve the problem of low investigation efficiency of shutdown reasons of a fuel cell system. When a detection result of the operation of the fuel cell system is received as a shutdown state, acquiring at least one of a condition triggering parameter of a whole vehicle control strategy and fault information of a candidate associated object; determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, wherein the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object; and generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result, and sending the prompt information to a target terminal. The method is mainly used for assisting in checking the shutdown reasons of the fuel cell system.
Description
Technical Field
The present invention relates to the field of fault detection technology, and to the field of fuel cell automobiles, and in particular, to a fault diagnosis method and apparatus, a storage medium, and a terminal for a fuel cell automobile.
Background
With the increasing prominence of global environmental problems, clean energy automobiles are becoming the main stream development direction of the automobile industry. The hydrogen fuel cell automobile is used as one of clean energy resource equipment, and its fuel cell has the core technology of producing chemical reaction of electric energy with hydrogen and oxygen under the action of catalyst. The fuel cell system is a key energy supply subsystem for controlling the chemical reaction to provide electric energy for the whole vehicle operation, plays a vital role in the whole vehicle power system of the hydrogen fuel cell automobile, and the normal or not of the operation state of the fuel cell system directly influences the normal operation of the whole vehicle.
At present, the existing fault detection of the hydrogen fuel cell automobile only can identify whether the fuel cell system is in normal operation or in stop operation, but the specific reasons for stopping the operation of the fuel cell system cannot be determined, the reasons for stopping the operation of the fuel cell system are more, the troubleshooting difficulty is increased, a large amount of time is required for troubleshooting the shutdown reasons, and the troubleshooting efficiency of the shutdown reasons of the fuel cell system is lower.
Disclosure of Invention
In view of the above, the present invention provides a fault diagnosis method and apparatus, a storage medium, and a terminal for a fuel cell vehicle, which mainly aims to solve the problem of low troubleshooting efficiency of the existing fuel cell system caused by shutdown.
According to an aspect of the present invention, there is provided a fault diagnosis method of a fuel cell vehicle, comprising:
when a detection result of the operation of the fuel cell system is received as a shutdown state, acquiring at least one of a condition triggering parameter of a whole vehicle control strategy and fault information of a candidate association object;
determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, wherein the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object, and the shutdown reason comprises a whole vehicle control shutdown, a fault shutdown and other occasional cause shutdown;
and generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result, and sending the prompt information to a target terminal.
Further, the determining the shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy includes:
determining a first troubleshooting result based on the fault information, and if the first troubleshooting result contains a shutdown related object, determining that a shutdown cause of a shutdown diagnosis result is a fault shutdown;
If the first checking result does not contain a stopping association object, determining a second checking result based on the matching result of the condition triggering parameter and the whole vehicle control strategy, and if the second checking result represents that the stopping cause is the whole vehicle control stopping, determining that the stopping cause of the stopping diagnosis result is the whole vehicle control stopping;
if the two checking results represent that the stopping cause is non-whole vehicle control stopping, determining that the stopping cause of the stopping diagnosis result is stopping caused by other occasional reasons.
Further, if the first checking result does not include the shutdown association object, determining a second checking result based on a matching result of the condition triggering parameter and the vehicle control policy includes:
if the first condition triggering parameter is matched with any one of the fault and parameter mutation control strategies, generating a second checking result used for representing that the parameter mutation causes the control stop of the whole vehicle;
and if the second condition triggering parameter is matched with any matching condition in the energy control strategy, generating a second checking result used for representing that the energy strategy causes the whole vehicle to control and stop.
Further, the candidate shutdown association object includes a system object and a component object, and the determining a first troubleshooting result based on the fault information includes:
Aiming at the system object, if the fault level in the fault information is greater than a preset level threshold, determining the system object as a shutdown association object, and generating a first troubleshooting result based on the fault information of the system object;
and aiming at the component object, if the fault type of the component object is matched with the shutdown association fault type, determining the component object as a shutdown association object, and generating a first troubleshooting result based on the fault information of the component object.
Further, before the determining the shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, the method further includes:
acquiring historical shutdown maintenance data of the fuel cell system, and extracting component object maintenance data in the historical shutdown maintenance data;
and configuring the component object faults corresponding to the component object maintenance data as shutdown association fault types.
Further, the generating, based on the shutdown diagnostic result, prompt information for indicating a shutdown failure category includes:
if the shutdown diagnosis result represents that the whole vehicle is controlled to be shutdown and the shutdown diagnosis result does not contain a shutdown related object, generating prompt information of which the shutdown fault class is a first shutdown fault class, wherein the first shutdown fault class represents that the non-maintenance class is recovered;
If the shutdown diagnosis result represents faults, generating prompt information that the shutdown fault class is a second shutdown fault class, wherein the second shutdown fault class represents maintenance class recovery.
Further, the method further comprises:
if the shutdown reason is that the shutdown is caused by other accidental reasons, global fault information at the current moment is obtained;
ordering the global fault information according to the association level of the fault main body of the global fault information and the fuel cell system to obtain a candidate fault sequence;
and generating prompt information of a third shutdown fault class based on the candidate fault sequence.
According to another aspect of the present invention, there is provided a fault diagnosis apparatus for a fuel cell vehicle, comprising:
the acquisition module is used for acquiring the condition triggering parameters of the whole vehicle control strategy and the fault information of the candidate associated objects when the detection result of the operation of the fuel cell system is received as a shutdown state;
the determining module is used for determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, wherein the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object, and the shutdown reason comprises a whole vehicle control shutdown, a fault shutdown and other occasional reason shutdown;
And the generation module is used for generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result and sending the prompt information to a target terminal.
Further, the determining module includes:
the first determining unit is used for determining a first checking result based on the fault information, and if the first checking result contains a shutdown association object, determining that the shutdown cause of the shutdown diagnosis result is a fault shutdown;
the second determining unit is used for determining a second checking result based on the matching result of the condition triggering parameter and the whole vehicle control strategy if the first checking result does not contain the object related to the stopping, and determining the stopping cause of the stopping diagnosis result to be the whole vehicle control stopping if the second checking result represents that the stopping cause is the whole vehicle control stopping;
and the third determining unit is used for determining that the shutdown reasons of the shutdown diagnosis result are shutdown caused by other occasional reasons if the two troubleshooting results represent that the shutdown reasons are non-whole vehicle control shutdown.
Further, in a specific application scenario, the second determining unit is specifically configured to generate a second checking result for characterizing that the parameter mutation causes the whole vehicle to control and stop if the first condition triggering parameter is matched with any one of the fault and the parameter mutation control policy;
And if the second condition triggering parameter is matched with any matching condition in the energy control strategy, generating a second checking result used for representing that the energy strategy causes the whole vehicle to control and stop.
Further, in a specific application scenario, the first determining unit is specifically configured to determine, for the system object, the system object as a shutdown related object if a failure level in the failure information is greater than a preset level threshold, and generate a first troubleshooting result based on the failure information of the system object;
and aiming at the component object, if the fault type of the component object is matched with the shutdown association fault type, determining the component object as a shutdown association object, and generating a first troubleshooting result based on the fault information of the component object.
Further, the apparatus further comprises:
an extraction module for acquiring historical shutdown repair data of the fuel cell system and extracting component object repair data in the historical shutdown repair data;
and the configuration module is used for configuring the component object faults corresponding to the component object maintenance data into shutdown association fault types.
Further, the generating module includes:
The first generation unit is used for generating prompt information of which the shutdown fault class is a first shutdown fault class if the shutdown diagnosis result represents that the whole vehicle is controlled to be shutdown and the shutdown diagnosis result does not contain a shutdown related object, wherein the first shutdown fault class represents that the non-maintenance class is recovered;
and the second generation unit is used for generating prompt information that the shutdown fault class is a second shutdown fault class if the shutdown diagnosis result represents faults, and the second shutdown fault class represents maintenance class recovery.
Further, the apparatus further comprises:
the acquisition module is further used for acquiring global fault information at the current moment if the shutdown reason is that the shutdown is caused by other sporadic reasons;
the sequencing module is used for sequencing the global fault information according to the association level of the fault main body of the global fault information and the fuel cell system to obtain a candidate fault sequence;
and the generation module is used for generating prompt information of a third shutdown fault class based on the candidate fault sequence.
According to still another aspect of the present invention, there is provided a storage medium having stored therein at least one executable instruction for causing a processor to perform operations corresponding to the above-described fault diagnosis method of a fuel cell vehicle.
According to still another aspect of the present invention, there is provided a terminal including: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction enables the processor to execute the operation corresponding to the fault diagnosis method of the fuel cell automobile.
By means of the technical scheme, the technical scheme provided by the embodiment of the invention has at least the following advantages:
the invention provides a fault diagnosis method and device, a storage medium and a terminal of a fuel cell automobile, wherein when a detection result of operation of a fuel cell system is received as a shutdown state, the embodiment of the invention obtains at least one of a condition triggering parameter of a whole automobile control strategy and fault information of a candidate associated object; determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, wherein the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object, and the shutdown reason comprises a whole vehicle control shutdown, a fault shutdown and other occasional cause shutdown; and generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result, and sending the prompt information to a target terminal. The time for checking the shutdown reasons of the fuel cell system is greatly reduced, the checking difficulty is reduced, and meanwhile, the checking accuracy is ensured, so that the checking efficiency of the shutdown reasons of the fuel cell system is greatly improved.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 shows a flow chart of a fault diagnosis method of a fuel cell automobile provided by an embodiment of the invention;
FIG. 2 is a flowchart of another method for diagnosing faults in a fuel cell vehicle according to an embodiment of the present invention;
fig. 3 shows a block diagram of a fault diagnosis apparatus for a fuel cell vehicle according to an embodiment of the present invention;
fig. 4 shows a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The method aims at the problems that the conventional fault detection of the hydrogen fuel cell automobile only can identify whether the fuel cell system is in normal operation or is in stop operation, but specific reasons for stopping operation of the fuel cell system cannot be determined, the reasons for stopping operation of the fuel cell system are more, the troubleshooting difficulty is increased, a large amount of time is required for troubleshooting the shutdown reasons, and the troubleshooting efficiency of the shutdown reasons of the fuel cell system is lower. The embodiment of the invention provides a fault diagnosis method of a fuel cell automobile, as shown in fig. 1, comprising the following steps:
101. and when the detection result of the operation of the fuel cell system is a shutdown state, acquiring the condition triggering parameters of the whole vehicle control strategy and the fault information of the candidate associated object.
In the embodiment of the invention, the fuel cell system is a subsystem in a whole hydrogen fuel cell automobile fuel cell power system. The scene for detecting the fuel cell system can be a development test scene of the automobile or a normal use scene of the automobile. The operating state of the fuel cell system is affected by the operating state of the vehicle strategy control, and other associated systems or components, in addition to the state of its own components. For example, some faults of a whole vehicle power battery, a motor, power supply and the like may cause shutdown of a fuel cell system, and other component faults may also cause load-down shutdown of the fuel cell system and the like. Therefore, the shutdown cause of the fuel cell cannot be intuitively determined, and analysis needs to be performed according to the relevant parameters of the vehicle control and fault information of other systems or components that may cause the shutdown of the fuel cell system, so as to determine the specific cause of the shutdown of the fuel cell system. The vehicle control strategy includes a plurality of matching conditions capable of triggering the vehicle control, the condition triggering parameters are parameters corresponding to the matching conditions, for example, the charging ratio (SOC) of the component object and the temperature are both condition triggering parameters, and when the parameters meet the matching conditions in the vehicle control strategy, the vehicle control system issues a control instruction indicating shutdown to the fuel cell system. The candidate association object is a system or a component which can cause the shutdown of the fuel cell system once the candidate association object fails based on the association relation among the systems and the historical experience judgment, so that the failure information of the candidate association object needs to be acquired as the basis of the cause analysis.
It should be noted that, the condition triggering parameter is taken as a judging basis for judging the execution of the whole vehicle control, rather than taking the shutdown control instruction sent by the whole vehicle controller as a judging basis, because in the vehicle development test stage, the situation that the whole vehicle control strategy is wrong exists, if the shutdown control instruction is taken as the judging basis, the error in the whole vehicle control strategy cannot be found, for example, the lithium battery fault causes the shutdown, but the fault does not trigger the control of the whole vehicle, and the whole vehicle controller also gives the shutdown instruction due to the error of the strategy, if the whole vehicle control condition is preferentially judged at this time, the shutdown cause is directly determined as the whole vehicle control shutdown, and the real shutdown cause, namely the lithium battery fault, is not found.
102. And determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy.
In the embodiment of the invention, the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object, and the shutdown reason comprises a whole vehicle control shutdown, a fault shutdown and other occasional reasons shutdown. Since the main causes of the shutdown of the fuel cell system include two causes of the control shutdown of the whole vehicle and the failure shutdown, the cause is specifically identified based on the failure information and the condition triggering parameter. If any one of the candidate associated objects fails, the current shutdown state of the fuel cell system is caused by the failure cause, and a specific failure main body, namely a shutdown associated object, can be determined according to the candidate associated object corresponding to the failure information. If the condition triggering parameter is matched with the whole vehicle control strategy, the condition triggering parameter indicates that the strategy that the whole vehicle controller stops the fuel cell system is triggered before the fuel cell system stops, the whole vehicle controller issues a stop command to the fuel cell system, the current stop cause can be judged to be caused by the control of the whole vehicle controller, and the part caused by the triggering of the whole vehicle control strategy can be determined according to the acquisition object corresponding to the condition triggering parameter. If both reasons are not satisfied, it indicates that the current shutdown is not caused by the failure of the vehicle controller control or the candidate association object, but is caused by an unconventional reason, for example, a control strategy error in the development test stage, and the control strategy error is listed as shutdown of other occasional reasons.
The confirmation process of the fault information and the confirmation process based on the matching result of the condition triggering parameter and the whole vehicle control strategy do not have an execution sequence relationship, and only one of the fault information and the confirmation process can be confirmed. For example, if the failure shutdown is confirmed, the failure shutdown can be confirmed directly without matching the condition triggering parameter with the vehicle control strategy. For example, if the vehicle control stop is confirmed, the failure information may not be confirmed, and the cause of the stop may be confirmed directly, or the failure information may be further confirmed, or if the vehicle control stop is confirmed, the vehicle control stop may be confirmed as a failure stop. The confirmation policy of the shutdown cause can be set according to specific application requirements, and the embodiment of the invention is not particularly limited. Specific reasons of the shutdown of the fuel cell system can be distinguished through the matching of the fault information of the candidate associated objects and the condition triggering parameters with the whole vehicle control strategy, and the specific shutdown associated objects causing the fault shutdown can be confirmed, so that an accurate reference basis is provided for subsequent maintenance and inspection.
103. And generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result, and sending the prompt information to a target terminal.
In the embodiment of the invention, after the shutdown diagnosis result is confirmed, in order to further improve the troubleshooting efficiency, the matched shutdown fault type of the current shutdown is determined according to the shutdown diagnosis result. For example, the whole vehicle is controlled to stop, a person is not required to repair specific parts, operations such as restarting the vehicle are only required, and the type of stop fault can be set as a type with lower level; the failure stopping is performed with high probability by a professional to repair a specific component, and the stopping failure type can be set to be a type with higher grade and prompt information is sent to a target terminal, wherein the target terminal can be a display terminal in a vehicle, a mobile terminal of a vehicle owner or a maintenance person binding the vehicle, a test terminal for vehicle development and the like. The content of the prompt information can also comprise comprehensive information such as shutdown reasons, failure positions and the like besides shutdown failure types, for example, "the failure of the fuel cell system leads to the shutdown of the fuel cell system, and the failure name is: a, the shutdown fault class is a second shutdown fault class ", and the embodiment of the invention is not particularly limited.
By dividing the shutdown fault categories, more accurate coping suggestions can be provided for vehicle drivers and vehicle maintenance personnel, the cause investigation direction is more definite, the investigation time is reduced, and therefore the investigation efficiency of the shutdown cause of the fuel cell system is effectively improved.
In one embodiment of the present invention, for further explanation and limitation, as shown in fig. 2, the determining the shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the vehicle control strategy includes:
201. and determining a first troubleshooting result based on the fault information, and if the first troubleshooting result contains a shutdown related object, determining that the shutdown reason of the shutdown diagnosis result is a fault shutdown.
202. If the first checking result does not contain a shutdown association object, determining a second checking result based on the matching result of the condition triggering parameter and the whole vehicle control strategy, and if the second checking result represents that the shutdown source is the whole vehicle control shutdown, determining that the shutdown source of the shutdown diagnosis result is the whole vehicle control shutdown.
203. If the two checking results represent that the stopping cause is non-whole vehicle control stopping, determining that the stopping cause of the stopping diagnosis result is stopping caused by other occasional reasons.
In the embodiment of the invention, the fault information is preferentially judged, and if the first checking result comprises a shutdown association object, which indicates that the candidate association object has an object of which the fault leads to the shutdown of the fuel cell system, the shutdown reason is determined as the shutdown of the fault. If the first checking result does not contain a shutdown association object, further matching the acquired condition triggering parameter with a matching condition in a whole vehicle control strategy, and if the matching result characterizes that the condition triggering parameter triggers the control action of the whole vehicle controller on the fuel cell, determining a shutdown reason as whole vehicle control shutdown; if the matching result indicates that the condition triggering parameter does not trigger the control action of the whole vehicle controller on the fuel cell, the condition triggering parameter indicates that the stopping reason is not a fault stopping or a whole vehicle control stopping, and the stopping reason is determined to be stopping of other occasional reasons.
It should be noted that, because there may be a fault and a situation where the whole vehicle control occurs simultaneously, for example, a hydrogen system fault, the hydrogen system controller sends a fault report to the whole vehicle, and the whole vehicle controller sends a shutdown control instruction to the fuel cell system according to the received fault report. In the process, although the shutdown action of the fuel cell system occurs based on the whole vehicle control instruction, the root cause is a fault, so that the fault is preferentially checked, and the accuracy of the fault check is further improved.
In an embodiment of the present invention, for further explanation and limitation, the determining the second checking result based on the matching result of the condition triggering parameter and the vehicle control policy includes:
if the first condition triggering parameter is matched with any one of the fault and parameter mutation control strategies, generating a second checking result used for representing that the parameter mutation causes the control stop of the whole vehicle;
and if the second condition triggering parameter is matched with any matching condition in the energy control strategy, generating a second checking result used for representing that the energy strategy causes the whole vehicle to control and stop.
In the embodiment of the invention, the whole vehicle control strategy comprises an energy control strategy, a fault and parameter mutation control strategy. The condition triggering parameters comprise a first condition triggering parameter and a second condition triggering parameter, wherein the generation time of the first condition triggering parameter is earlier than the generation time of the second condition triggering parameter, namely, the generation time of the second condition triggering parameter is set as a T moment, and the generation time of the first condition triggering parameter is set as a T-1 moment. Because the parameter mutation is an occasional event, such as a sudden jump, a loss of the highest leakage amount of the chargeable current and the hydrogen, etc., may occur at a moment, but the state is not continuous, and may be recovered after the shutdown of the fuel cell system, and the state of the parameter to be matched by the energy control strategy is continuous for a period of time, the parameter to be matched by the energy control strategy may be acquired at the shutdown time of the fuel cell or at a time close to the shutdown time, that is, the second condition triggering parameter, and the parameter of the parameter mutation strategy needs to be matched with the parameter generated before the shutdown, that is, the first condition triggering parameter and the matching condition in the fault and parameter mutation control strategy.
In one embodiment of the present invention, for further explanation and limitation, the determining the first inspection result based on the fault information includes:
aiming at the system object, if the fault level in the fault information is greater than a preset level threshold, determining the system object as a shutdown association object, and generating a first troubleshooting result based on the fault information of the system object;
and aiming at the component object, if the fault type of the component object is matched with the shutdown association fault type, determining the component object as a shutdown association object, and generating a first troubleshooting result based on the fault information of the component object.
In the embodiment of the invention, the candidate shutdown association object comprises a system object and a component object. The fault information includes fault level, fault type. Specific fault levels are corresponding to systematic faults in the fault information, and only higher-level faults can cause shutdown of the fuel cell system. For example, the hydrogen system and the fuel cell system failure are classified into a first stage, a second stage and a third stage, the severity is sequentially increased, and when the hydrogen system and the fuel cell system are in the second stage and the third stage, the fuel cell system is stopped, but the first stage failure does not cause the stop of the fuel cell system. Therefore, it is necessary to determine that the failure is related to the shutdown of the fuel cell system, not in the presence of the failure, but in combination with the level of the failure. For failure of a component, since not all failures of the component cause a shutdown, for example, failure of a lithium battery with a smaller correlation to energy supply performance does not cause a shutdown of the fuel cell system, it is necessary to determine whether the type of failure occurring is correlated with a shutdown of the fuel cell system in conjunction with the specific type of failure, thereby determining whether the shutdown caused by the failure of the component.
In an embodiment of the present invention, for further explanation and limitation, before determining the shutdown diagnostic result of the fuel cell system based on the fault level and/or the fault type, and the matching result of the condition triggering parameter and the vehicle control policy, the method further includes:
acquiring historical shutdown maintenance data of the fuel cell system, and extracting component object maintenance data in the historical shutdown maintenance data;
and configuring the component object faults corresponding to the component object maintenance data as shutdown association fault types.
In the embodiment of the invention, since the failure of the component does not necessarily cause the shutdown of the fuel cell system, the failure types of the component which can cause the shutdown of the fuel cell system need to be classified and sorted in advance according to the historical shutdown maintenance data, and the failure types are sorted into a failure list for summarizing. The fault types comprise different fault names, such as temperature faults, charging faults and the like, and also comprise corresponding different fault degrees of the same fault name. Taking lithium batteries as an example, in the trend of the energy flow of the whole vehicle, the electricity generated by the fuel cell system can be supplied to the whole vehicle, and can be used for charging the lithium batteries, if the lithium batteries fail, the fuel cell system can be required to stop, but particularly, the types of failures and the degree of the failures can cause the stop, more accurate data can be extracted from historical maintenance data, and therefore, the accurate judgment on the stop of the fuel cell system caused by the components is required.
In one embodiment of the present invention, for further explanation and limitation, the step of generating, based on the shutdown diagnostic result, a prompt message for indicating a shutdown failure category includes:
if the shutdown diagnosis result represents that the whole vehicle controls the shutdown and the shutdown diagnosis result does not contain a shutdown related object, generating prompt information that the shutdown fault class is a first shutdown fault class;
and if the shutdown diagnosis result represents the fault, generating prompt information of which the shutdown fault category is a second shutdown fault category.
In the embodiment of the invention, the first shutdown fault class represents non-maintenance class recovery, and the second shutdown fault class represents maintenance class recovery. When a shutdown of the fuel cell system occurs, there may be a case where there is a failure requiring maintenance, for example, a failure of the fuel cell system, a failure of the hydrogen system, a failure of the lithium battery, or the like, or a case where maintenance intervention is not required, for example, a case where it can be solved by means of injecting hydrogen gas, restarting an automobile, or the like. Thus, the manner in which operation is resumed may be classified according to whether or not the current vehicle has a failure. The situations requiring maintenance intervention and not requiring maintenance intervention are distinguished through classification, so that a vehicle driver or a fault investigation person can clearly operate and recover in time, the consumption of investigation time is reduced, and the investigation efficiency is improved.
In one embodiment of the present invention, for further explanation and limitation, the method further comprises:
if the shutdown reason is that the shutdown is caused by other accidental reasons, global fault information at the current moment is obtained;
ordering the global fault information according to the association level of the fault main body of the global fault information and the fuel cell system to obtain a candidate fault sequence;
and generating prompt information of a third shutdown fault class based on the candidate fault sequence.
In the embodiment of the invention, if the shutdown cause is shutdown due to other accidental reasons, the shutdown cause cannot be checked only based on the fault information of the candidate associated object, the global fault information reported by each detection system of the whole vehicle can be obtained to ensure the comprehensiveness of fault check, and the candidate fault sequences can be obtained by sequencing from large to small according to the association of the fault position and the fuel cell system under the condition of more fault information for the convenience of fault check. Wherein, the key maintenance class that is used for representing that needs professional maintenance personnel to intervene analysis resumes of third shut down trouble class. If the shutdown-associated object is identified from the candidate fault sequence based on the analysis, the candidate associated object may be updated based on the shutdown-associated object.
The invention provides a fault diagnosis method of a fuel cell automobile, which comprises the steps of obtaining at least one of a condition triggering parameter of a whole automobile control strategy and fault information of a candidate associated object when a detection result of operation of a fuel cell system is received as a shutdown state; determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, wherein the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object, and the shutdown reason comprises a whole vehicle control shutdown, a fault shutdown and other occasional cause shutdown; and generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result, and sending the prompt information to a target terminal. The time for checking the shutdown reasons of the fuel cell system is greatly reduced, the checking difficulty is reduced, and meanwhile, the checking accuracy is ensured, so that the checking efficiency of the shutdown reasons of the fuel cell system is greatly improved.
Further, as an implementation of the method shown in fig. 1, an embodiment of the present invention provides a fault diagnosis apparatus for a fuel cell vehicle, as shown in fig. 3, where the apparatus includes:
The obtaining module 31 is configured to obtain a condition triggering parameter of a vehicle control policy and fault information of a candidate associated object when a detection result of operation of the fuel cell system is received as a shutdown state;
a determining module 32, configured to determine a shutdown diagnostic result of the fuel cell system based on the fault information and/or a matching result of the condition triggering parameter and a vehicle control policy, where the shutdown diagnostic result includes at least one of a shutdown cause and a shutdown related object, and the shutdown cause includes a vehicle control shutdown, a fault shutdown, and other occasional cause shutdown;
and the generating module 33 is used for generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result and sending the prompt information to the target terminal.
Further, the determining module 32 includes:
the first determining unit is used for determining a first checking result based on the fault information, and if the first checking result contains a shutdown association object, determining that the shutdown cause of the shutdown diagnosis result is a fault shutdown;
the second determining unit is used for determining a second checking result based on the matching result of the condition triggering parameter and the whole vehicle control strategy if the first checking result does not contain the object related to the stopping, and determining the stopping cause of the stopping diagnosis result to be the whole vehicle control stopping if the second checking result represents that the stopping cause is the whole vehicle control stopping;
And the third determining unit is used for determining that the shutdown reasons of the shutdown diagnosis result are shutdown caused by other occasional reasons if the two troubleshooting results represent that the shutdown reasons are non-whole vehicle control shutdown.
Further, in a specific application scenario, the second determining unit is specifically configured to generate a second checking result for characterizing that the parameter mutation causes the whole vehicle to control and stop if the first condition triggering parameter is matched with any one of the fault and the parameter mutation control policy;
and if the second condition triggering parameter is matched with any matching condition in the energy control strategy, generating a second checking result used for representing that the energy strategy causes the whole vehicle to control and stop.
Further, in a specific application scenario, the first determining unit is specifically configured to determine, for the system object, the system object as a shutdown related object if a failure level in the failure information is greater than a preset level threshold, and generate a first troubleshooting result based on the failure information of the system object;
and aiming at the component object, if the fault type of the component object is matched with the shutdown association fault type, determining the component object as a shutdown association object, and generating a first troubleshooting result based on the fault information of the component object.
Further, the apparatus further comprises:
an extraction module for acquiring historical shutdown repair data of the fuel cell system and extracting component object repair data in the historical shutdown repair data;
and the configuration module is used for configuring the component object faults corresponding to the component object maintenance data into shutdown association fault types.
Further, the generating module 33 includes:
the first generation unit is used for generating prompt information of which the shutdown fault class is a first shutdown fault class if the shutdown diagnosis result represents that the whole vehicle is controlled to be shutdown and the shutdown diagnosis result does not contain a shutdown related object, wherein the first shutdown fault class represents that the non-maintenance class is recovered;
and the second generation unit is used for generating prompt information that the shutdown fault class is a second shutdown fault class if the shutdown diagnosis result represents faults, and the second shutdown fault class represents maintenance class recovery.
Further, the apparatus further comprises:
the obtaining module 31 is further configured to obtain global fault information at the current moment if the shutdown cause is shutdown of other occasional causes;
the sequencing module is used for sequencing the global fault information according to the association level of the fault main body of the global fault information and the fuel cell system to obtain a candidate fault sequence;
And the generation module is used for generating prompt information of a third shutdown fault class based on the candidate fault sequence.
The invention provides a fault diagnosis device of a fuel cell automobile, which is characterized in that when a detection result of the operation of a fuel cell system is received as a shutdown state, at least one of a condition triggering parameter of a whole automobile control strategy and fault information of a candidate associated object is obtained; determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, wherein the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object, and the shutdown reason comprises a whole vehicle control shutdown, a fault shutdown and other occasional cause shutdown; and generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result, and sending the prompt information to a target terminal. The time for checking the shutdown reasons of the fuel cell system is greatly reduced, the checking difficulty is reduced, and meanwhile, the checking accuracy is ensured, so that the checking efficiency of the shutdown reasons of the fuel cell system is greatly improved.
According to an embodiment of the present invention, there is provided a storage medium storing at least one executable instruction that can execute the fault diagnosis method of the fuel cell vehicle in any of the above-described method embodiments.
Fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention, and the specific embodiment of the present invention is not limited to the specific implementation of the terminal.
As shown in fig. 4, the terminal may include: a processor 402, a communication interface (Communications Interface) 404, a memory 406, and a communication bus 408.
Wherein: processor 402, communication interface 404, and memory 406 communicate with each other via communication bus 408.
A communication interface 404 for communicating with network elements of other devices, such as clients or other servers.
The processor 402 is configured to execute the program 410, and may specifically perform the relevant steps in the above-described fault diagnosis method embodiment of the fuel cell vehicle.
In particular, program 410 may include program code including computer-operating instructions.
The processor 402 may be a central processing unit CPU, or a specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of the present invention. The one or more processors included in the terminal may be the same type of processor, such as one or more CPUs; but may also be different types of processors such as one or more CPUs and one or more ASICs.
Memory 406 for storing programs 410. Memory 406 may comprise high-speed RAM memory or may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
Program 410 may be specifically operable to cause processor 402 to:
when a detection result of the operation of the fuel cell system is received as a shutdown state, acquiring at least one of a condition triggering parameter of a whole vehicle control strategy and fault information of a candidate association object;
determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, wherein the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object, and the shutdown reason comprises a whole vehicle control shutdown, a fault shutdown and other occasional cause shutdown;
and generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result, and sending the prompt information to a target terminal.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fault diagnosis method of a fuel cell vehicle, characterized by comprising:
when a detection result of the operation of the fuel cell system is received as a shutdown state, acquiring at least one of a condition triggering parameter of a whole vehicle control strategy and fault information of a candidate association object;
determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, wherein the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object, and the shutdown reason comprises a whole vehicle control shutdown, a fault shutdown and other occasional cause shutdown;
and generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result, and sending the prompt information to a target terminal.
2. The method of claim 1, wherein the determining a shutdown diagnostic result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and a vehicle control strategy comprises:
Determining a first troubleshooting result based on the fault information, and if the first troubleshooting result contains a shutdown related object, determining that a shutdown cause of a shutdown diagnosis result is a fault shutdown;
if the first checking result does not contain a stopping association object, determining a second checking result based on the matching result of the condition triggering parameter and the whole vehicle control strategy, and if the second checking result represents that the stopping cause is the whole vehicle control stopping, determining that the stopping cause of the stopping diagnosis result is the whole vehicle control stopping;
if the two checking results represent that the stopping cause is non-whole vehicle control stopping, determining that the stopping cause of the stopping diagnosis result is stopping caused by other occasional reasons.
3. The method of claim 2, wherein the vehicle control strategy includes an energy control strategy, a fault and parameter mutation control strategy, the condition triggering parameters include a first condition triggering parameter and a second condition triggering parameter, and determining a second inspection result based on a matching result of the condition triggering parameter and the vehicle control strategy if the first inspection result does not include a shutdown-related object includes:
if the first condition triggering parameter is matched with any one of the fault and parameter mutation control strategies, generating a second checking result used for representing that the parameter mutation causes the control stop of the whole vehicle;
And if the second condition triggering parameter is matched with any matching condition in the energy control strategy, generating a second checking result used for representing that the energy strategy causes the whole vehicle to control and stop.
4. The method of claim 2, wherein the fault information is to include a fault level, a fault type, the candidate shutdown association object includes a system object, a component object, and the determining the first troubleshooting result based on the fault information includes:
aiming at the system object, if the fault level in the fault information is greater than a preset level threshold, determining the system object as a shutdown association object, and generating a first troubleshooting result based on the fault information of the system object;
and aiming at the component object, if the fault type of the component object is matched with the shutdown association fault type, determining the component object as a shutdown association object, and generating a first troubleshooting result based on the fault information of the component object.
5. The method according to claim 1, wherein before the determining of the shutdown diagnostic result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the vehicle control strategy, the method further comprises:
Acquiring historical shutdown maintenance data of the fuel cell system, and extracting component object maintenance data in the historical shutdown maintenance data;
and configuring the component object faults corresponding to the component object maintenance data as shutdown association fault types.
6. The method of any of claims 1, wherein the generating a hint information indicating a shutdown failure category based on the shutdown diagnostic result comprises:
if the shutdown diagnosis result represents that the whole vehicle is controlled to be shutdown and the shutdown diagnosis result does not contain a shutdown related object, generating prompt information of which the shutdown fault class is a first shutdown fault class, wherein the first shutdown fault class represents that the non-maintenance class is recovered;
if the shutdown diagnosis result represents faults, generating prompt information that the shutdown fault class is a second shutdown fault class, wherein the second shutdown fault class represents maintenance class recovery.
7. The method according to any one of claims 1-6, further comprising:
if the shutdown reason is that the shutdown is caused by other accidental reasons, global fault information at the current moment is obtained;
ordering the global fault information according to the association level of the fault main body of the global fault information and the fuel cell system to obtain a candidate fault sequence;
And generating prompt information of a third shutdown fault class based on the candidate fault sequence.
8. A fault diagnosis device for a fuel cell vehicle, comprising:
the acquisition module is used for acquiring the condition triggering parameters of the whole vehicle control strategy and the fault information of the candidate associated objects when the detection result of the operation of the fuel cell system is received as a shutdown state;
the determining module is used for determining a shutdown diagnosis result of the fuel cell system based on the fault information and/or the matching result of the condition triggering parameter and the whole vehicle control strategy, wherein the shutdown diagnosis result at least comprises one of a shutdown reason and a shutdown related object, and the shutdown reason comprises a whole vehicle control shutdown, a fault shutdown and other occasional reason shutdown;
and the generation module is used for generating prompt information for indicating the shutdown fault class based on the shutdown diagnosis result and sending the prompt information to a target terminal.
9. A storage medium having stored therein at least one executable instruction for causing a processor to perform operations corresponding to the fault diagnosis method of a fuel cell vehicle according to any one of claims 1 to 7.
10. A terminal, comprising: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;
the memory is configured to store at least one executable instruction that causes the processor to perform operations corresponding to the fault diagnosis method for a fuel cell vehicle according to any one of claims 1 to 7.
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