CN116587865A - Method and device for processing faults and system for processing faults - Google Patents

Method and device for processing faults and system for processing faults Download PDF

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Publication number
CN116587865A
CN116587865A CN202310779074.9A CN202310779074A CN116587865A CN 116587865 A CN116587865 A CN 116587865A CN 202310779074 A CN202310779074 A CN 202310779074A CN 116587865 A CN116587865 A CN 116587865A
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CN
China
Prior art keywords
state
fault
target
target vehicle
vehicle
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310779074.9A
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Chinese (zh)
Inventor
姜鹏翰
赵开成
赵慧超
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FAW Group Corp
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FAW Group Corp
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Priority to CN202310779074.9A priority Critical patent/CN116587865A/en
Publication of CN116587865A publication Critical patent/CN116587865A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The application discloses a method and a device for processing faults and a system for processing faults. Wherein the method comprises the following steps: obtaining information of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle; determining a state of the target vehicle according to the information of the target wire harness, wherein the state of the target vehicle comprises: normal state and fault state; determining fault information corresponding to a fault state under the condition that the state of the target vehicle is the fault state; and determining a fault processing method according to the fault information, and executing the fault processing method corresponding to the fault information. The application solves the technical problem that the faults cannot be processed in time because corresponding processing methods are not provided for different fault information when the vehicle has insulation detection faults in the related art.

Description

Method and device for processing faults and system for processing faults
Technical Field
The application relates to the technical field of fault processing of vehicles, in particular to a method and a device for processing faults and a system for processing faults.
Background
The electric automobile (Battery Electric Vehicle) is an automobile which uses an on-board power supply as power and drives wheels to run by a motor, wherein the output voltage of the on-board power supply is generally 60-1500V and far exceeds the safety voltage of a human body. In order to prevent electric leakage of the electric automobile, insulation fault detection and timely treatment are required to be carried out on the electric automobile. The related art can only provide a method for automatically detecting an insulation failure by a vehicle, and does not provide corresponding processing measures for the occurrence of an insulation failure in different situations.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the application provides a method and a device for processing faults and a system for processing faults, which at least solve the technical problem that the faults cannot be processed in time because corresponding processing methods are not provided for different fault information when the insulation detection faults occur in vehicles in the related technology.
According to an aspect of an embodiment of the present application, there is provided a method of handling a fault, including: obtaining information of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle; determining a state of the target vehicle according to the information of the target wire harness, wherein the state of the target vehicle comprises: normal state and fault state; determining fault information corresponding to a fault state under the condition that the state of the target vehicle is the fault state; and determining a fault processing method according to the fault information, and executing the fault processing method corresponding to the fault information.
Optionally, the information of the target harness includes: resistance value of the target wire harness; determining a state of the target vehicle according to the information of the target wire harness includes: if the resistance value of the target wire harness is smaller than a preset resistance threshold value, determining that the state of the target vehicle is a fault state; and if the resistance value of the target wire harness is greater than or equal to a preset resistance threshold value, determining that the state of the target vehicle is a normal state.
Optionally, the fault information includes: the fault information includes: the operation mode of the target vehicle, wherein the operation mode of the target vehicle at least comprises: a high voltage drive mode, a charging and heating mode, a discharging mode, a remote control mode, and a power replenishment mode.
Optionally, a fault processing method corresponding to the fault information is executed, including: if the state of the target vehicle is a high-voltage driving mode, executing a first processing method; if the state of the target vehicle is any one of a charging mode, a charging and heating mode, and a discharging mode, performing a second processing method; if the state of the target vehicle is any one of the remote control mode and the power replenishment mode, the third processing method is executed.
Optionally, executing a first processing method, including: acquiring the running speed of a target vehicle, a first state of a front cabin cover of the target vehicle and a second state of a rear cabin cover of the target vehicle; if the running speed is smaller than the preset speed threshold value and the first state and the second state are both open states, performing high-voltage power-down processing on the target vehicle; if the running speed is greater than or equal to a preset speed threshold value, or any one of the first state and the second state is a closed state, the control target vehicle continues running in the current running state, and a fault identifier corresponding to the fault state is stored.
Optionally, performing a second processing method includes: the control target vehicle stops and continues to run in the current running state; executing a third processing method, comprising: the control target vehicle continues to run in the current running state.
Optionally, the fault information further includes: the fault type and the fault position, and the fault processing method further comprises the following steps: the terminal equipment of the control target vehicle displays the type of the fault and the position of the fault; and/or the control terminal equipment sends out an alarm signal.
According to another aspect of the embodiment of the present application, there is also provided a method for handling a fault, including: obtaining a resistance value of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle; determining a state of the target vehicle according to the resistance value, wherein the state of the target vehicle comprises: normal state and fault state; and under the condition that the state of the target vehicle is a fault state, storing a fault identifier corresponding to the fault state, and sending fault information corresponding to the fault state to a controller of the target vehicle.
According to another aspect of the embodiment of the present application, there is also provided a system for handling a fault, including: a control system and a terminal device, wherein the control system comprises a battery management system controller BMS and a target controller for controlling the target vehicle to carry out high-voltage power-up and high-voltage power-down; the BMS is used for acquiring a resistance value of a target wire harness in the target vehicle, determining the state of the target vehicle according to the resistance value, and transmitting the state of the target vehicle to the target controller, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of the target vehicle, and the state of the target vehicle comprises: normal state and fault state; the target controller is connected with the BMS and used for acquiring the state of the target vehicle, determining fault information corresponding to the fault state under the condition that the state of the target vehicle is the fault state, executing a fault processing method corresponding to the fault information and transmitting the fault information to the terminal equipment; and the terminal equipment is connected with the target controller and is used for displaying fault information and/or sending out alarm signals.
According to another aspect of the embodiment of the present application, there is also provided an apparatus for processing a fault, including: the acquisition module is used for acquiring information of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting the battery pack and a vehicle body of a target vehicle; the first determining module is used for determining the state of the target vehicle according to the information of the target wire harness, wherein the state of the target vehicle comprises the following steps: normal state and fault state; the second determining module is used for determining fault information corresponding to the fault state when the state of the target vehicle is the fault state; and the processing module is used for determining a fault processing method according to the fault information and executing the fault processing method corresponding to the fault information.
According to another aspect of the embodiment of the present application, there is also provided a nonvolatile storage medium, in which a computer program is stored, where a device in which the nonvolatile storage medium is located executes the above method for handling a fault by running the computer program.
According to another aspect of the embodiments of the present application, there is also provided an electronic device comprising a memory in which a computer program is stored, and a processor arranged to perform the above-described method of handling faults by means of the computer program.
In the embodiment of the application, the information of a target wire harness is acquired, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle; determining a state of the target vehicle according to the information of the target wire harness, wherein the state of the target vehicle comprises: normal state and fault state; determining fault information corresponding to a fault state under the condition that the state of the target vehicle is the fault state; determining a fault processing method according to the fault information, and executing a fault processing method corresponding to the fault information, detecting whether the vehicle has a fault or not by detecting a resistance value through the BMS, so as to realize fault identification; when a vehicle fails, a fault signal is transmitted to the main controller through the BMS, so that the fault is forwarded, and a processing method corresponding to the fault information is executed through the main controller, so that the fault is processed; the main controller also transmits the fault information to terminal equipment in the vehicle after receiving the fault information, and the terminal equipment sends out alarm information corresponding to the fault information to realize early warning of the fault; in summary, the method provided by the embodiment of the application determines whether the vehicle has a fault or not through the high-voltage wire harness, and when the vehicle has the fault, the processing method corresponding to the fault is executed through the main control, so that the purpose of timely processing the fault is achieved, the technical effect of improving the safety of the vehicle in the driving process is realized, and the technical problem that the fault cannot be timely processed because the corresponding processing method is not provided for different fault information when the vehicle has an insulation detection fault in the related art is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a block diagram of a hardware configuration of a computer terminal (or mobile device) for implementing a method of handling a fault according to an embodiment of the present application;
FIG. 2 is a flow chart of a method of handling faults according to an embodiment of the present application;
FIG. 3 is a flow chart of fault handling in high voltage drive mode according to an embodiment of the present application;
FIG. 4 is a flow chart of another method of handling faults according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a system for handling faults according to an embodiment of the present application;
FIG. 6 is a workflow diagram of a system for handling faults according to an embodiment of the present application;
FIG. 7 is a block diagram of an apparatus for handling faults according to an embodiment of the present application;
fig. 8 is a table of correspondence between the operation mode of the vehicle and the processing method according to the embodiment of the application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to better understand the embodiments of the present application, technical terms related to the embodiments of the present application are explained as follows:
front cabin cover: also known as the hood, is located in the front of the vehicle and covers the engine and other important mechanical parts. For protecting engines and other mechanical components from the external environment, such as rain, dust, and debris; meanwhile, the heat insulation and noise reduction effects are achieved, and the influence of engine noise and heat on the interior of the vehicle is reduced.
Rear cabin cover: also known as a trunk lid, is located at the rear of the vehicle covering the trunk space. Is used for protecting articles in the trunk from being damaged by the external environment.
High voltage up-voltage: a high voltage circuit in the electrical system of the vehicle powers the equipment and systems in the vehicle.
Voltage under high voltage: the power supply to the vehicle is cut off under high pressure conditions.
High voltage drive mode: the power battery powers the high-voltage motor to drive the mode of operation of the vehicle.
In the related art, only the identification and monitoring of faults are concerned, and the same treatment measures are adopted when the vehicle has insulation faults under different working conditions, so that the problem that the insulation faults under different working conditions cannot be timely and accurately treated exists; in order to solve the problem, in the embodiment of the application, the working condition where the insulation fault occurs is focused, and corresponding treatment measures are provided for different working conditions, and are described in detail below.
In accordance with an embodiment of the present application, there is provided a method embodiment of handling a failure, it being noted that the steps shown in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order other than that shown or described herein.
The method embodiments provided by the embodiments of the present application may be performed in a mobile terminal, a computer terminal, or similar computing device. Fig. 1 shows a block diagram of a hardware architecture of a computer terminal (or mobile device) for implementing a method of handling a fault. As shown in fig. 1, the computer terminal 10 (or mobile device 10) may include one or more processors 102 (shown as 102a, 102b, … …,102 n) which may include, but are not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA, a memory 104 for storing data, and a transmission module 106 for communication functions. In addition, the method may further include: a display, an input/output interface (I/O interface), a Universal Serial BUS (USB) port (which may be included as one of the ports of the BUS), a network interface, a power supply, and/or a camera. It will be appreciated by those of ordinary skill in the art that the configuration shown in fig. 1 is merely illustrative and is not intended to limit the configuration of the electronic device described above. For example, the computer terminal 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.
It should be noted that the one or more processors 102 and/or other data processing circuits described above may be referred to generally herein as "data processing circuits. The data processing circuit may be embodied in whole or in part in software, hardware, firmware, or any other combination. Furthermore, the data processing circuitry may be a single stand-alone processing module, or incorporated, in whole or in part, into any of the other elements in the computer terminal 10 (or mobile device). As referred to in embodiments of the application, the data processing circuit acts as a processor control (e.g., selection of the path of the variable resistor termination connected to the interface).
The memory 104 may be used to store software programs and modules of application software, such as program instructions/data storage devices corresponding to the fault handling methods in the embodiments of the present application, and the processor 102 executes the software programs and modules stored in the memory 104 to perform various functional applications and data processing, i.e., implement the fault handling methods described above. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission means 106 is arranged to receive or transmit data via a network. The specific examples of the network described above may include a wireless network provided by a communication provider of the computer terminal 10. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module for communicating with the internet wirelessly.
The display may be, for example, a touch screen type Liquid Crystal Display (LCD) that may enable a user to interact with a user interface of the computer terminal 10 (or mobile device).
Fig. 2 is a flowchart of a method for handling faults according to an embodiment of the present application, as shown in fig. 2, the method includes the following steps:
step S202, obtaining information of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle.
The embodiment of the present application provides a processing method for a high-voltage insulation fault, in which whether or not a (target) vehicle has a high-voltage insulation fault is determined according to an operation state of a high-voltage wire harness connecting a battery pack of the vehicle and a vehicle body in the (target) vehicle, and therefore, information representing an operation of the high-voltage wire harness (i.e., the target wire harness) is first acquired in step S202.
Step S204, determining the state of the target vehicle according to the information of the target wire harness, wherein the state of the target vehicle comprises the following steps: normal state and fault state.
After the operation information of the high-voltage wire harness (i.e., the target wire harness) is acquired in step S202, in step S204, the state of the vehicle in which the high-voltage wire harness is located is determined according to the operation information of the high-voltage wire harness.
According to an alternative embodiment of the present application, the information of the target harness includes: resistance value of the target wire harness; determining a state of the target vehicle according to the information of the target wire harness includes: if the resistance value of the target wire harness is smaller than a preset resistance threshold value, determining that the state of the target vehicle is a fault state; and if the resistance value of the target wire harness is greater than or equal to a preset resistance threshold value, determining that the state of the target vehicle is a normal state.
The operation information of the high-voltage wire harness (i.e., the target wire harness) includes information that can confirm whether the high-voltage wire harness is operating normally, such as a resistance value, a current value, a power value, and the like of the high-voltage wire harness. In this embodiment, the state of the (target) vehicle is determined by the resistance value in the current high-voltage wire harness, and the control system of the vehicle acquires the resistance value of the high-voltage wire harness (i.e., the target wire harness) and compares the resistance value with a preset resistance threshold (i.e., a preset resistance threshold), and judges whether the (target) vehicle has a fault according to the comparison result; if the comparison result indicates that the resistance value of the detected high-voltage wire harness (namely the target wire harness) is smaller than a preset resistance threshold value, judging that the (target) vehicle has a high-voltage insulation fault and is in a fault state; if the comparison result indicates that the resistance value of the detected high-voltage wire harness (namely, the target wire harness) is larger than or equal to a preset resistance threshold value, judging that the (target) vehicle has no high-voltage insulation fault and is in a normal state.
It should be noted that, since the performances of different vehicle types are different, the rated power provided by the battery pack to the vehicle body is also different in the vehicles of different vehicle types, and further, the resistance value measured for the high-voltage wire harness is also different, and therefore, the preset resistance threshold value is also different for different vehicles.
In step S206, when the state of the target vehicle is a failure state, failure information corresponding to the failure state is determined.
In step S206, when it is determined in step S204 that the (target) vehicle has a high-voltage insulation fault according to the operation information of the high-voltage wire harness (i.e., the target wire harness), fault information corresponding to the fault state is determined, wherein the fault information is information describing the fault occurring from the (target) vehicle in multiple dimensions.
The fault information includes: the operation mode of the target vehicle, wherein the operation mode of the target vehicle at least comprises: a high voltage drive mode, a charging and heating mode, a discharging mode, a remote control mode, and a power replenishment mode.
In the present embodiment, the fault information corresponding to the fault state obtained through step S206 includes the current operation mode of the (target) vehicle, where the (target) vehicle has the following operation modes: 1) A high-voltage drive mode representing driving of the (target) vehicle operation by the power battery for the high-voltage motor function; 2) A charging mode indicating that the (target) vehicle is in a charged state, wherein in the charging mode the (target) vehicle may be charging with alternating current or charging with direct current; 3) A charging and heating mode indicating that the (target) vehicle is operating the heating function while charging, wherein in the charging and heating mode, the (target) vehicle may be charging with alternating current or charging with direct current; 4) A discharge mode representing a battery pack in the (target) vehicle powering the (target) vehicle to drive the (target) vehicle to run, or a device function in the (target) vehicle, wherein the (target) vehicle is discharged by alternating current only when in the discharge mode; 5) Indicating that The (target) vehicle is in a remote control mode under remote control such as a remote Air conditioning mode, an automatic parking mode, a remote upgrade (OTA) mode and The like; 6) The method is characterized in that the method is used for representing a power supplementing mode that a (target) vehicle charges a battery pack in a braking energy recovery mode and the like during running, wherein the braking energy recovery mode is that when the vehicle decelerates or brakes, a motor is converted into a generator, braking energy is converted into electric energy, and then the electric energy is stored in the battery pack.
According to some optional embodiments of the application, the fault information further comprises: the fault type and the fault position, and the fault processing method further comprises the following steps: the terminal equipment of the control target vehicle displays the type of the fault and the position of the fault; and/or the control terminal equipment sends out an alarm signal.
In some alternative embodiments, the fault information corresponding to the fault state obtained through step S206 further includes: the control system of the (target) vehicle transmits fault information comprising the type of the fault and the position of the fault to terminal equipment in the (target) vehicle and controls the terminal equipment to send alarm information, wherein the terminal equipment can be an instrument of the (target) vehicle, a central control display screen of the (target) vehicle and other terminal equipment in the (target) vehicle, and can also be a mobile terminal (such as a mobile phone) in communication with the (target) vehicle and other terminal equipment for remotely controlling the (target) vehicle; the terminal device may send the alarm information only by displaying the fault information such as the fault type and the fault position, or may send the alarm prompt tone only, or may send the alarm prompt tone while displaying the fault information such as the fault type and the fault position.
Step S208, determining a fault processing method according to the fault information, and executing the fault processing method corresponding to the fault information.
In step S208, the control system of the (target) vehicle first determines a corresponding fault handling method according to the current operation mode of the vehicle in the fault information, and then executes the determined fault method.
According to an alternative embodiment of the present application, a fault handling method corresponding to fault information is performed, comprising: if the state of the target vehicle is a high-voltage driving mode, executing a first processing method; if the state of the target vehicle is any one of a charging mode, a charging and heating mode, and a discharging mode, performing a second processing method; if the state of the target vehicle is any one of the remote control mode and the power replenishment mode, the third processing method is executed.
In this embodiment, the corresponding fault handling method is determined in step S208 according to the current running state of the vehicle in the fault information, including the following cases: if the (target) vehicle is operating in the high-voltage drive mode when an insulation fault occurs, the control system of the (target) vehicle executes a fault handling measure (i.e., a first handling method) corresponding to the high-voltage drive mode; if the (target) vehicle is operating in any one of the charge mode, the charge and heat mode, and the discharge mode when the insulation failure occurs, the control system of the (target) vehicle performs a failure handling measure (i.e., a second handling method) different from the previous handling measure; if the (target) vehicle is operating in the remote control mode or the power replenishment mode when an insulation failure occurs, the control system of the (target) vehicle executes a failure handling measure (i.e., a third handling method) different from the two handling measures described above.
According to some alternative embodiments of the application, a first processing method is performed, comprising: acquiring the running speed of a target vehicle, a first state of a front cabin cover of the target vehicle and a second state of a rear cabin cover of the target vehicle; if the running speed is smaller than the preset speed threshold value and the first state and the second state are both open states, performing high-voltage power-down processing on the target vehicle; if the running speed is greater than or equal to a preset speed threshold value, or any one of the first state and the second state is a closed state, the control target vehicle continues running in the current running state, and a fault identifier corresponding to the fault state is stored.
Fig. 3 is a fault processing flow chart in the high-voltage drive mode, and as shown in fig. 3, processing measures corresponding to the high-voltage drive mode are determined according to the current running condition of the (target) vehicle, specifically, according to the running speed of the (target) vehicle, (first) state of the front hatch of the (target) vehicle and (second) state of the rear hatch of the (target) vehicle; wherein the (first) state of the front hatch comprises an open state and a closed state, and the (second) state of the rear hatch also comprises an open state and a closed state. When a high-voltage insulation fault occurs in a high-voltage driving mode, if the running speed is greater than a preset speed threshold value, the driver still has a need of driving the vehicle, and if the driver directly exits the high-voltage driving mode, the vehicle can lose power, and traffic accidents are easy to cause; therefore, when the running speed of the (target) vehicle is greater than the preset speed threshold, the control system controls the (target) vehicle to maintain the current process, continue running in the current running state, and simultaneously store the fault code (i.e., the fault identifier) corresponding to the fault state in the register of the control system. If the running speed of the (target) vehicle is detected to be smaller than the preset speed threshold value, or the front cabin of the (target) vehicle is in an on state, or the rear cabin of the (target) vehicle is in an on state, the control system controls the (target) vehicle to execute a high-voltage power-down operation.
According to further alternative embodiments of the present application, a second processing method is performed, comprising: the control target vehicle stops and continues to run in the current running state; executing a third processing method, comprising: the control target vehicle continues to run in the current running state.
In other embodiments, if the (target) vehicle runs in any one of the charging mode, the charging and heating mode and the discharging mode, an insulation detection fault occurs, and a driver may execute operations of plugging and unplugging the charging gun, opening and closing the charging cover and the like at any time, so that an electric shock risk exists, and therefore, the control system controls the (target) vehicle to exit from the current running process and stop the current running state. When the (target) vehicle runs in a remote control mode or a power-up mode, no person usually exists on the vehicle, and no electric shock danger exists; therefore, when the target vehicle has a high-voltage insulation fault in the remote control mode or the power-up mode, the control system can control the (target) vehicle to maintain the current operation progress and continue to operate in the current operation state.
Through the steps, when the high-voltage insulation fault occurs to the vehicle, the corresponding fault processing method can be provided according to the running state of the vehicle, and the technical effect of timely and accurately solving the insulation detection fault is achieved.
FIG. 4 is a flow chart of another method for handling faults according to embodiments of the present application, as shown in FIG. 3, the method comprising the steps of:
step S402, obtaining a resistance value of a target wire harness, wherein the target wire harness is a high-voltage wire harness connecting a battery pack and a body of a target vehicle.
In step S402, the battery management system (Battery Management System, BMS) detects a high-voltage harness (i.e., a target harness) connecting a battery pack of the (target) vehicle and a vehicle body of the (target) vehicle, and obtains a resistance value of the high-voltage harness.
Step S404, determining the state of the target vehicle according to the resistance value, wherein the state of the target vehicle comprises: normal state and fault state.
In step S404, after the resistance value of the high voltage wire harness (i.e., the target wire harness) is acquired through step S302, the BMS determines whether the state of the high voltage wire harness is operating normally according to the detected resistance value, and further determines whether the (target) vehicle is in a normal state or a fault state. For example, whether the high-voltage harness (i.e., the target harness) is operating normally may be determined by comparing the detected resistance value with a preset resistance threshold, if the high-voltage harness is operating normally, the (target) vehicle is in a normal state, and if the high-voltage harness is not operating normally, the (target) vehicle is in a fault state.
Step S406, when the state of the target vehicle is a fault state, the fault identifier corresponding to the fault state is saved, and the fault information corresponding to the fault state is sent to the controller of the target vehicle.
In step S406, after determining that the (target) vehicle is in a fault state, the BMS stores a fault code (i.e., a fault identifier) corresponding to the fault state in a register in the BMS, and transmits fault information including a plurality of information such as an operation mode of the (target) vehicle, a type of the fault, and a location of the fault to a control system of the (target) vehicle, and the control system determines different fault processing methods according to the received fault information and the current speed of the (target) vehicle, the state of front/rear covers of the (target) vehicle, and the like.
FIG. 5 is a schematic diagram of a system for handling faults according to an embodiment of the present application, as shown in FIG. 5, the system comprising: a control system 50 and a terminal device 52, wherein the control system 50 includes a battery management system controller BMS (54) and a target controller 56 for controlling the target vehicle to perform high-voltage power-up and high-voltage power-down; and a BMS (54) for acquiring a resistance value of a target wire harness in the target vehicle, determining a state of the target vehicle according to the resistance value, and transmitting the state of the target vehicle to the target controller 56, wherein the target wire harness is a high-voltage wire harness connecting the battery pack and a body of the target vehicle, and the state of the target vehicle includes: normal state and fault state; a target controller 56 connected to the BMS (54) for acquiring a state of the target vehicle, and in case the state of the target vehicle is a fault state, determining fault information corresponding to the fault state, performing a fault processing method corresponding to the fault information, and transmitting the fault information to the terminal device 52; the terminal device 52 is connected to the target controller 56 for displaying fault information and/or issuing an alarm signal.
Fig. 6 is a flowchart of the operation of the system for handling the fault, and as shown in fig. 6, the system starts to operate, and fault information is recognized by the BMS (54): the resistance value of the high-voltage wire harness (i.e., the target wire harness) is detected, the operation condition of the high-voltage wire harness is determined based on the detected resistance value, and the operation state of the (target) vehicle is further determined, and upon determining that the operation state of the (target) vehicle is a fault state, a fault code is stored in the storage device of the control system 50 and fault information describing the fault is transmitted to the target controller 56. When the target controller 56 determines that the running state of the (target) vehicle is a failure state, it will determine and execute a corresponding processing method based on the received failure information, and at the same time, transmit the failure information to the terminal device 52; the terminal device 52 may display the alarm information to the user or may issue an alarm signal simultaneously with the display of the alarm information.
Fig. 7 is a block diagram of an apparatus for handling a fault according to an embodiment of the present application, as shown in fig. 7, the apparatus includes: an acquisition module 70 for acquiring information of a target harness, wherein the target harness is a high-voltage harness connecting the battery pack and a body of the target vehicle; the first determining module 72 is configured to determine a state of the target vehicle according to the information of the target wire harness, where the state of the target vehicle includes: normal state and fault state; a second determining module 74, configured to determine fault information corresponding to a fault state when the state of the target vehicle is the fault state; the processing module 76 is configured to determine a fault processing method according to the fault information, and execute the fault processing method corresponding to the fault information.
When the device for handling faults works, the acquisition module 70 acquires information which is sent by the BMS and indicates the operation condition of the high-voltage wire harness, wherein the operation condition of the high-voltage wire harness (namely the target wire harness) is judged according to the relation between the value of an electric signal (such as resistance) transmitted inside the device and a preset threshold value, and when the value of the electric signal (such as resistance) transmitted inside the device is larger than or equal to the preset threshold value, the high-voltage wire harness is considered to normally operate; when the value of the electrical signal (such as resistance) transmitted inside is smaller than a preset threshold value, the high-voltage wire harness is considered to be not normally operated. In the present embodiment, the first determining module 72 determines the loading of the (target) vehicle according to the operation condition of the high-voltage harness, and considers that the vehicle in which the high-voltage harness is located (i.e., the target vehicle) has a high-voltage insulation failure when the high-voltage harness is not operating normally. Next, the second determination module 74 determines, after confirming that the (target) vehicle has failed in high-voltage insulation, failure information such as the type of failure, the location of the failure, the operation mode of the (target) vehicle at the time of occurrence of the failure, and the operation speed of the (target) vehicle, and transmits the same to the processing module 76, and the processing module 76 determines and executes a processing method corresponding to the failure information. FIG. 8 is a table of correspondence between the operating modes of the vehicle and the processing methods, and the processing module 76 determines the processing method of the fault according to the relationship provided in FIG. 8 before executing the processing method, as shown in FIG. 8, if the (target) vehicle is in the high-voltage driving mode when the high-voltage insulation fault occurs, the (target) vehicle is first enabled to maintain the current progress, the fault code (i.e. the fault identifier) corresponding to the fault state is stored in the register of the device, and then the specific processing method is further determined according to the operating speed of the (target) vehicle, the information such as the front engine compartment cover and the front engine compartment cover; if the high-voltage insulation fault occurs, the (target) vehicle is in any one of a charging mode, a charging and heating mode and a discharging mode, and the (target) vehicle is led to exit the current process; if the high-voltage insulation fault occurs, the (target) vehicle is in a remote control mode or a power-up mode, so that the (target) vehicle maintains the current progress.
It should be noted that, whether the fault code (i.e., the fault identifier) corresponding to the fault state is stored in the storage device of the BMS or the fault code is stored in the storage device of the controller/control system, the fault code is cleared in two ways intelligently, one is that after the fault disappears and the controller/control system of the vehicle is dormant, the fault code is automatically covered and written; the other is that when the maintenance electricity detects faults, the staff manually clears the fault through an authorized diagnostic instrument.
It should be noted that, the preferred implementation manner of the embodiment shown in fig. 7 may refer to the related description of the embodiment shown in fig. 2, which is not repeated herein.
The embodiment of the application also provides a nonvolatile storage medium, wherein the nonvolatile storage medium stores a computer program, and the equipment in the nonvolatile storage medium executes the fault processing method by running the computer program.
The above-described nonvolatile storage medium is used to store a program that performs the following functions: obtaining information of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle; determining a state of the target vehicle according to the information of the target wire harness, wherein the state of the target vehicle comprises: normal state and fault state; determining fault information corresponding to a fault state under the condition that the state of the target vehicle is the fault state; and determining a fault processing method according to the fault information, and executing the fault processing method corresponding to the fault information.
The embodiment of the application also provides an electronic device comprising a memory in which a computer program is stored and a processor arranged to execute the above method of handling faults by means of the computer program.
The processor in the electronic device is configured to execute a program that performs the following functions: obtaining information of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle; determining a state of the target vehicle according to the information of the target wire harness, wherein the state of the target vehicle comprises: normal state and fault state; determining fault information corresponding to a fault state under the condition that the state of the target vehicle is the fault state; and determining a fault processing method according to the fault information, and executing the fault processing method corresponding to the fault information.
The respective modules in the apparatus for handling a fault may be program modules (for example, a set of program instructions for implementing a specific function), or may be hardware modules, and for the latter, they may be represented by the following forms, but are not limited thereto: the expression forms of the modules are all a processor, or the functions of the modules are realized by one processor.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the related art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.

Claims (10)

1. A method of handling a fault, comprising:
obtaining information of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle;
determining a state of the target vehicle according to the information of the target wire harness, wherein the state of the target vehicle comprises: normal state and fault state;
determining fault information corresponding to the fault state under the condition that the state of the target vehicle is the fault state;
and determining a fault processing method according to the fault information, and executing the fault processing method corresponding to the fault information.
2. The method of claim 1, wherein the information of the target harness comprises: resistance value of the target wire harness;
determining a state of the target vehicle according to the information of the target wire harness, including:
if the resistance value of the target wire harness is smaller than a preset resistance threshold value, determining that the state of the target vehicle is the fault state;
And if the resistance value of the target wire harness is greater than or equal to the preset resistance threshold value, determining that the state of the target vehicle is the normal state.
3. The method of claim 1, wherein the fault information comprises: the operation mode of the target vehicle, wherein the operation mode of the target vehicle at least comprises: a high voltage drive mode, a charging and heating mode, a discharging mode, a remote control mode, and a power replenishment mode.
4. A method according to claim 3, wherein performing a fault handling method corresponding to the fault information comprises:
executing a first processing method if the state of the target vehicle is the high-voltage driving mode;
if the state of the target vehicle is any one of the charging mode, the charging and heating mode, and the discharging mode, performing a second processing method;
and if the state of the target vehicle is any one of the remote control mode and the power supplementing mode, executing a third processing method.
5. The method of claim 4, wherein performing a first processing method comprises:
Acquiring a running speed of the target vehicle, a first state of a front cabin cover of the target vehicle and a second state of a rear cabin cover of the target vehicle;
if the running vehicle speed is smaller than a preset speed threshold value and the first state and the second state are both open states, performing high-voltage power-down processing on the target vehicle;
and if the running vehicle speed is greater than or equal to a preset speed threshold value, or any one of the first state and the second state is a closed state, controlling the target vehicle to continue running in the current running state, and storing a fault identifier corresponding to the fault state.
6. The method of claim 4, wherein the step of determining the position of the first electrode is performed,
executing a second processing method, comprising: controlling the target vehicle to stop and continue to run in the current running state;
executing a third processing method, comprising: and controlling the target vehicle to continue to run in the current running state.
7. The method of claim 1, wherein the fault information further comprises: the type of fault and the location of the fault, the method further comprising:
controlling a terminal device of the target vehicle to display the type of the fault and the position of the fault; and/or
And controlling the terminal equipment to send out an alarm signal.
8. A method of handling a fault, comprising:
obtaining a resistance value of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle;
determining a state of the target vehicle according to the resistance value, wherein the state of the target vehicle comprises: normal state and fault state;
and under the condition that the state of the target vehicle is the fault state, storing a fault identifier corresponding to the fault state, and sending fault information corresponding to the fault state to a controller of the target vehicle.
9. A system for handling faults, comprising: a control system and a terminal device, wherein the control system comprises a battery management system controller BMS and a target controller for controlling a target vehicle to perform high-voltage power-up and high-voltage power-down;
the BMS is configured to obtain a resistance value of a target wire harness in a target vehicle, determine a state of the target vehicle according to the resistance value, and transmit the state of the target vehicle to the target controller, wherein the target wire harness is a high-voltage wire harness connecting a battery pack and a vehicle body of the target vehicle, and the state of the target vehicle includes: normal state and fault state;
The target controller is connected with the BMS, and is used for acquiring the state of the target vehicle, determining fault information corresponding to the fault state when the state of the target vehicle is the fault state, executing a fault processing method corresponding to the fault information, and transmitting the fault information to the terminal equipment;
the terminal equipment is connected with the target controller and is used for displaying the fault information and/or sending out an alarm signal.
10. An apparatus for handling faults, comprising:
the acquisition module is used for acquiring information of a target wire harness, wherein the target wire harness is a high-voltage wire harness for connecting a battery pack and a vehicle body of a target vehicle;
a first determining module, configured to determine a state of the target vehicle according to information of the target wire harness, where the state of the target vehicle includes: normal state and fault state;
the second determining module is used for determining fault information corresponding to the fault state when the state of the target vehicle is the fault state;
and the processing module is used for determining a fault processing method according to the fault information and executing the fault processing method corresponding to the fault information.
CN202310779074.9A 2023-06-28 2023-06-28 Method and device for processing faults and system for processing faults Pending CN116587865A (en)

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Application Number Priority Date Filing Date Title
CN202310779074.9A CN116587865A (en) 2023-06-28 2023-06-28 Method and device for processing faults and system for processing faults

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310779074.9A CN116587865A (en) 2023-06-28 2023-06-28 Method and device for processing faults and system for processing faults

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117406698A (en) * 2023-12-12 2024-01-16 广汽埃安新能源汽车股份有限公司 ECU fault processing method and device in brushing process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117406698A (en) * 2023-12-12 2024-01-16 广汽埃安新能源汽车股份有限公司 ECU fault processing method and device in brushing process
CN117406698B (en) * 2023-12-12 2024-03-01 广汽埃安新能源汽车股份有限公司 ECU fault processing method and device in brushing process

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