A vehicle fault handling method, a vehicle control unit, and a vehicle

Abstract

The present invention relates to a vehicle fault handling method, a vehicle integrated controller, and a vehicle, belonging to the technical field of vehicles. Among them, the method is applied to the vehicle integrated controller, and the method includes: obtaining the mapping relationship between vehicle faults and fault handling information; the fault handling information includes at least one of: fault level, whether high voltage is allowed to be applied, whether driving is allowed, whether charging is allowed, percentage of power limit, speed limit value, whether the driver can intervene, and whether the fault can be recovered; determining a target vehicle fault, and according to the mapping relationship, determining the target fault handling information corresponding to the target vehicle fault; and handling the target vehicle fault according to the target fault handling information. The present invention can provide a more detailed fault handling method for vehicle faults, and avoid exaggerating the impact of vehicle faults on the vehicle, thereby causing the driver's anxiety when the vehicle fault occurs.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a vehicle fault handling method, a vehicle control unit, and a vehicle. Background Art

[0002] In recent years, the popularity rate of automobiles has been increasing, and at the same time, the vehicle failure rate has remained high. When a failure occurs in an existing vehicle, the handling measures are relatively radical, and even the failures are treated in a one-size-fits-all manner, without fully considering the actual situation of the whole vehicle. As a result, the impact of the failure is exaggerated in the actual process, increasing the driver's anxiety and affecting the driving experience. Summary of the Invention

[0003] In view of this, it is necessary to provide a vehicle fault handling method, a vehicle control unit, and a vehicle to solve the problem in the prior art that the radical handling method of vehicle faults causes a poor driving experience for the driver.

[0004] To solve the above problems, in a first aspect, the present invention provides a vehicle fault handling method. The vehicle includes a vehicle control unit, and the method is applied to the vehicle control unit. The method includes:

[0005] Obtaining a mapping relationship between vehicle faults and fault handling information; the fault handling information includes at least one of: fault level, whether high voltage is allowed, whether driving is allowed, whether charging is allowed, power limit percentage, speed limit value, whether the driver can intervene, and whether the fault can be recovered;

[0006] Determining a target vehicle fault, and determining target fault handling information corresponding to the target vehicle fault according to the mapping relationship;

[0007] Handling the target vehicle fault according to the target fault handling information.

[0008] Optionally, the vehicle faults include logic faults and damage faults of various devices in the vehicle; wherein, the various devices include at least one of: a motor controller, a battery management system, a gearbox, a DC-DC controller, an air pump controller, an oil pump controller, a DC power distribution, an air conditioning system, an instrument, and a vehicle control unit.

[0009] Optionally, the obtaining of the mapping relationship between vehicle faults and fault handling information includes:

[0010] Obtaining a mapping relationship between a fault identifier of a vehicle fault and fault handling information; wherein, the fault identifier includes: a fault flag bit or a fault code;

[0011] The determining of the target vehicle fault and the determining of the target fault handling information corresponding to the target vehicle fault according to the mapping relationship includes:

[0012] Determine the target fault identifier of the target vehicle fault, and determine the target fault handling information corresponding to the target fault identifier according to the mapping relationship.

[0013] Optionally, the determining the target fault identifier of the target vehicle fault includes:

[0014] When the vehicle is awakened by a vehicle key or by charging, perform a fault detection on the vehicle to determine the target vehicle fault and the target fault identifier corresponding to the target vehicle fault.

[0015] Optionally, the target vehicle fault includes multiple ones; the handling the target vehicle fault according to the target fault handling information includes:

[0016] Determine a first fault handling method with the most serious handling method according to the target fault handling information corresponding to each target vehicle fault;

[0017] Handle each target vehicle fault according to the first fault handling method.

[0018] Optionally, the first fault handling method includes: driver intervention possible or driver intervention not possible; the handling each target vehicle fault according to the first fault handling method includes:

[0019] When the first fault handling method includes driver intervention possible, obtain a second fault handling method input by the driver for each target vehicle fault, and handle each target vehicle fault according to the second fault handling method;

[0020] When the first fault handling method includes driver intervention not possible, handle each target vehicle fault by the vehicle control unit according to the first fault handling method.

[0021] Optionally, the target vehicle fault includes at least one; the target vehicle fault is detected and determined during the current power-on cycle; the target fault handling information includes fault recoverable or fault non-recoverable; then the handling the target vehicle fault according to the target fault handling information includes:

[0022] For any target vehicle fault, if the target fault handling information corresponding to the any target vehicle fault includes fault recoverable, then when the condition causing the any target vehicle fault no longer exists, recover the any target vehicle fault;

[0023] If the target fault handling information corresponding to any one of the target vehicle faults includes that the fault is irrecoverable, then lock any one of the target vehicle faults as irrecoverable during the current power-on cycle.

[0024] Optionally, the method further includes:

[0025] If during the current power-on cycle, any one of the target vehicle faults occurs a preset number of times, and the target fault handling information corresponding to any one of the target vehicle faults in the preset number of times all includes that the fault is recoverable, then lock any one of the target vehicle faults as irrecoverable during the current power-on cycle.

[0026] In a second aspect, the present invention further provides a vehicle control unit, and the vehicle control unit is configured to execute any one of the above vehicle fault handling methods.

[0027] In a third aspect, the present invention further provides a vehicle, including the above vehicle control unit.

[0028] The beneficial effects of the present invention are:

[0029] The present invention is applied to the vehicle control unit of a vehicle. The present invention includes: obtaining the mapping relationship between vehicle faults and fault handling information; the fault handling information includes at least one of: fault level, whether to allow high voltage, whether to allow driving, whether to allow charging, power limit percentage, speed limit value, whether the driver can intervene, and whether the fault is recoverable; determining the target vehicle fault, and according to the mapping relationship, determining the target fault handling information corresponding to the target vehicle fault; and handling the target vehicle fault according to the target fault handling information. The present invention sets detailed fault handling information for each vehicle fault. Therefore, when a target vehicle fault occurs, the present invention can provide a more detailed fault handling method for the driver for the target vehicle fault, avoiding exaggerating the impact of the vehicle fault on the vehicle and causing the driver's anxiety when the vehicle fault occurs. Description of the Drawings

[0030] Figure 1 It is a schematic flowchart of an embodiment of the vehicle fault handling method provided by the present invention;

[0031] Figure 2 It is a schematic diagram of the vehicle fault handling method provided by the present invention. Detailed Embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the embodiments of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0034] The descriptions such as "first", "second", etc. involved in the embodiments of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the technical features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0035] Referring to

[0036] Referring to Figure 1 , a flowchart of an embodiment of the vehicle fault handling method provided by the present invention is shown. The method is applied to the vehicle's vehicle control unit, and the method includes:

[0037] S101, obtaining the mapping relationship between vehicle faults and fault handling information; the fault handling information includes at least one of: fault level, whether high voltage is allowed, whether driving is allowed, whether charging is allowed, power limit percentage, speed limit value, whether the driver can intervene, and whether the fault can be recovered.

[0038] The method steps in this embodiment can be executed by the vehicle's vehicle control unit. The vehicle control unit can obtain the mapping relationship between each vehicle fault in the vehicle and its fault handling information.

[0039] Vehicle failures can include logical failures and failure of various devices in the vehicle; among them, logical failures refer to failures in computer systems, software, or electronic devices caused by logical errors or logical design defects. Such failures are usually not caused by hardware damage, but by errors in program code, algorithms, or logical processes. Logical failures may lead to abnormal system behavior, data processing errors, or function failures. The failure of various devices in the vehicle can include: the failure of devices such as the motor control unit (MCU), battery management system (BMS), transmission control unit (TCU), DC-DC converter (DCDC), air pump controller (ACM), oil pump controller (Electronic Power Steering, EPS), DC power distribution (Power Distribution Unit, PDU), air conditioning system (Electric Air Conditioner, EAC), instrument cluster module (ICM), and vehicle control unit (VCU) in the vehicle.

[0040] The failure level can include a discharge failure level and a charging failure level.

[0041] S102, determine the target vehicle failure, and according to the mapping relationship, determine the target failure handling information corresponding to the target vehicle failure.

[0042] The target vehicle failure can be the vehicle failure to be processed. The target vehicle failure can be one or multiple.

[0043] According to the above mapping relationship, the target failure handling information corresponding to each target vehicle failure can be determined.

[0044] S103, process the target vehicle failure according to the target failure handling information.

[0045] After determining the target failure handling information, the driver can be assisted to process the target vehicle failure according to the target failure handling information.

[0046] For example, if the target vehicle fault is a drive fault, the target fault handling information corresponding to the target vehicle fault includes: fault level 1, allowing high-voltage power-on, allowing driving, allowing charging, a power limit percentage of 70%, a speed limit value of 80 km / h, driver intervention possible, and the fault can be recovered. Fault level 1 indicates that the drive fault is a minor fault. Allowing high-voltage power-on means that the vehicle's battery system can supply power to the motor or other high-voltage devices, and the driver can use devices such as the air conditioner in the vehicle. Allowing driving means that the vehicle can start and drive. Driver intervention possible means that this drive fault can be handled by the driver himself. At this time, the VCU can transfer the handling authority of this drive fault to the driver, and the driver can choose the power limit percentage and / or the speed limit value and other methods to handle it by himself, so that the driver can better control the vehicle.

[0047] Moreover, when driver intervention is possible, the target fault handling information corresponding to this drive fault can be fed back to the driver, so that the driver can more comprehensively understand the severity of this drive fault (fault level), which common vehicle functions are not affected by this drive fault (allowing high-voltage power-on, allowing driving, allowing charging), and the recommended handling methods for this drive fault (power limit percentage, speed limit value), etc., in order to give the driver a better vehicle control experience.

[0048] If the target fault handling information corresponding to the target vehicle fault includes that driver intervention is not possible, at this time, the VCU can handle it by itself, avoiding the driver's perception of this target vehicle fault and reducing the driver's anxiety about this target vehicle fault.

[0049] The present invention sets detailed fault handling information for each vehicle fault. Therefore, when a target vehicle fault occurs, more detailed fault handling methods can be provided for the driver for the target vehicle fault, while ensuring the driver's vehicle control experience, avoiding exaggerating the impact of the vehicle fault on the vehicle and causing the driver's anxiety when the vehicle fault occurs.

[0050] In one embodiment, S101 specifically includes: obtaining the mapping relationship between the fault identifier of the vehicle fault and the fault handling information; wherein, the fault identifier includes: a fault flag bit or a fault code; S102 specifically includes: determining the target fault identifier of the target vehicle fault, and according to the mapping relationship, determining the target fault handling information corresponding to the target fault identifier.

[0051] The fault flag bit (Fault Flag) is a status bit inside the ECU, used to indicate whether a certain system or component has a fault. For example, if the BMS detects that the battery temperature is too high, it will set the fault flag bit of "battery temperature too high".

[0052] A fault code is a specific code generated by the system after detecting a fault, used to identify the type and location of the fault. Fault codes are usually stored in the memory of the ECU in the form of a combination of numbers or letters. For example, P0A00 indicates that the battery management system (BMS) has detected that the battery voltage is too low. P0A01 indicates that the battery management system (BMS) has detected that the battery temperature is too high. P0A02 indicates that the motor controller (MCU) has detected that the electric motor is overheating.

[0053] A fault identifier represents a vehicle fault. In this embodiment, a mapping relationship between the fault identifier and the fault handling information can be established. According to the target fault identifier and the mapping relationship, the target fault handling information corresponding to the target fault identifier is determined, and then the target vehicle fault is processed according to the target fault handling information.

[0054] From the perspective of the whole vehicle, this embodiment processes the fault flag bits or fault codes of each vehicle component, and subdivides the vehicle faults corresponding to all fault flag bits or fault codes, which can reduce the misjudgment that a minor fault is determined to be a serious fault, with the misjudgment rate reduced by 20%, and can make fewer vehicle faults that cannot be handled by the driver be perceived by the driver.

[0055] In one embodiment, the steps of determining the target fault identifier of the target vehicle fault may specifically include: when the vehicle is awakened by the vehicle key or by the charging method, the vehicle is subjected to fault detection to determine the target vehicle fault and the target fault identifier corresponding to the target vehicle fault.

[0056] In this embodiment, when the user wakes up the vehicle each time, the VCU performs fault detection on the vehicle to obtain the fault situation of the vehicle. The fault situation of the vehicle includes the target fault identifier corresponding to the target vehicle fault.

[0057] In one embodiment, the target vehicle fault includes multiple ones; S103 may specifically include: determining a first fault handling method with the most serious handling method according to the target fault handling information corresponding to each target vehicle fault; processing each target vehicle fault according to the first fault handling method.

[0058] If the target vehicle fault includes multiple ones, then the target fault handling information will also include multiple ones. In this embodiment, the same type of information in each target fault handling information can be compared, and the one with the most serious handling method is selected from each same type of information to form the first fault handling method.

[0059] For example, target vehicle faults include Vehicle Fault 1 and Vehicle Fault 2. The fault handling information for Vehicle Fault 1 is: Fault Level 1, allowing high voltage connection, allowing driving, allowing charging, power limit percentage 70%, speed limit value 80 km / h, driver non-intervention, and the fault is recoverable. The fault handling information for Vehicle Fault 2 is: Fault Level 2, allowing high voltage connection, allowing driving, not allowing charging, power limit percentage 50%, speed limit value 40 km / h, driver intervention allowed, and the fault is recoverable. Among them, the numerical value of the fault level represents the severity of the fault.

[0060] By comparing the fault handling information of Vehicle Fault 1 and Vehicle Fault 2, it can be seen that the severity of Fault Level 2 is greater than that of Fault Level 1, the severity of not allowing charging is greater than allowing charging, the severity of power limit percentage 50% is greater than power limit percentage 70%, the severity of speed limit value 40 km / h is greater than speed limit value 80 km / h, and the severity of driver non-intervention is greater than driver intervention allowed. Then the first fault handling method can be obtained as: Fault Level 2, allowing high voltage connection, allowing driving, not allowing charging, power limit percentage 50%, speed limit value 40 km / h, driver non-intervention, and the fault is recoverable. The VCU then processes Vehicle Fault 1 and Vehicle Fault 2 according to this first fault handling method.

[0061] Similarly, the severity of not allowing high voltage connection is greater than allowing high voltage connection, the severity of not allowing driving is greater than allowing driving, and the severity of non-recoverable fault is greater than recoverable fault.

[0062] In one embodiment, the first fault handling method includes: driver intervention allowed or driver non-intervention; then the steps of processing each target vehicle fault according to the first fault handling method may specifically include: when the first fault handling method includes driver intervention allowed, obtaining the second fault handling method input by the driver for each target vehicle fault, and processing each target vehicle fault according to the second fault handling method; when the first fault handling method includes driver non-intervention, the vehicle control unit processes each target vehicle fault according to the first fault handling method.

[0063] When the first fault handling method includes driver intervention allowed, the VCU can transfer the processing authority of each target vehicle fault to the driver, and after obtaining the second fault handling method input by the driver for each target vehicle fault, process each target vehicle fault according to the second fault handling method.

[0064] When the first fault handling method includes driver non-intervention, the VCU can process each target vehicle fault according to the information in the first fault handling method by itself.

[0065] In one embodiment, the target vehicle fault includes at least one; the target vehicle fault is detected and determined during this power-on cycle; the target fault processing information includes a recoverable fault or an unrecoverable fault; then S101 may specifically include: for any target vehicle fault, if the target fault processing information corresponding to any target vehicle fault includes a recoverable fault, then when the condition causing any target vehicle fault no longer exists, restore any target vehicle fault; if the target fault processing information corresponding to any target vehicle fault includes an unrecoverable fault, then lock any target vehicle fault as unrecoverable during this power-on cycle.

[0066] In this embodiment, the fault recoverability or non-recoverability of each target vehicle fault can be analyzed. If the target fault handling information of a target vehicle fault includes that the fault is recoverable, then when the recovery condition is met, the VCU automatically recovers the target vehicle fault. If the target fault handling information of a target vehicle fault includes that the fault is non-recoverable, then the target vehicle fault is locked as non-recoverable during this power-on cycle.

[0067] A power cycle process refers to the entire process from the vehicle being completely powered off to being powered on again and entering normal operation.

[0068] In one embodiment, the vehicle fault handling method also includes: if during this power-on cycle, any target vehicle fault occurs a preset number of times, and the target fault handling information corresponding to any target vehicle fault in the preset number of times includes that the fault is recoverable, then during this power-on cycle, any target vehicle fault is locked as unrecoverable.

[0069] When a target vehicle fault occurs repeatedly during this power-on cycle, in order to prevent the vehicle from being power-limited and power-limited multiple times, resulting in a poor driving experience, this embodiment can lock the target vehicle fault as unrecoverable, that is, set the fault handling information of the target vehicle fault to unrecoverable, and can also set the driver not to intervene. This setting information is limited to this power-on cycle.

[0070] Reference Figure 2 , showing a schematic diagram of the vehicle fault processing method provided by the present invention. The VCU detects the fault flag and fault code of the vehicle to obtain target fault identifiers of multiple target vehicle faults. Then the VCU determines the target fault processing information corresponding to each target fault identifier according to the stored mapping relationship.

[0071] Among them, the target fault handling information corresponding to the target fault identifier 1 includes: discharge fault level 1, charging fault level 1, whether to allow high voltage application 1, whether to allow vehicle operation 1, whether to allow charging 1, power limit percentage 1, speed limit value 1, whether the driver can intervene 1, and whether the fault can be recovered 1. And, the target fault handling information corresponding to the target fault identifier 2 is: discharge fault level 2, charging fault level 2, whether to allow vehicle operation 2, whether to allow charging 2, power limit percentage 2, speed limit value 2, whether the driver can intervene 2, and whether the fault can be recovered 2. And the target fault handling information corresponding to the target fault identifier 3, and so on.

[0072] In the target fault handling information, the fault level may include the discharge fault level and the charging fault level. The larger the value of the fault level, the more serious the fault can be indicated. Whether to allow high voltage application 1 indicates allowing high voltage application; whether to allow high voltage application 2 indicates not allowing high voltage application; whether to allow vehicle operation 1 indicates allowing vehicle operation; whether to allow vehicle operation 2 indicates not allowing vehicle operation; whether to allow charging 1 indicates allowing charging; whether to allow charging 2 indicates not allowing charging; whether the driver can intervene 1 indicates that the driver can intervene; whether the driver can intervene 2 indicates that the driver cannot intervene; whether the fault can be recovered 1 indicates that the fault can be recovered; whether the fault can be recovered 2 indicates that the fault cannot be recovered. The 1 and 2 in the power limit percentage 1 and the power limit percentage 2 respectively represent the values of different preset power limit percentages; the 1 and 2 in the speed limit value 1 and the speed limit value 2 respectively represent the values of different preset speed limits.

[0073] Then, the VCU can arbitrate the most serious handling method, that is, the first fault handling method, according to the target fault handling information corresponding to each target fault identifier, and then handle each of the target vehicle faults according to the first fault handling method.

[0074] In one embodiment, the present invention also provides a vehicle control unit, and the vehicle control unit is used to execute any one of the above vehicle fault handling methods.

[0075] In one embodiment, the present invention also provides a vehicle, including the above vehicle control unit.

[0076] Those skilled in the art can understand that all or part of the processes of implementing the above embodiment methods can be completed by instructing relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. Among them, the computer-readable storage medium is a magnetic disk, an optical disc, a read-only memory or a random access memory, etc.

[0077] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A vehicle fault handling method, characterized in that: The vehicle includes a vehicle controller, the method is applied to the vehicle controller, and the method includes: Obtaining a mapping relationship between vehicle faults and fault handling information; the fault handling information includes: fault level, whether high voltage is allowed, whether driving is allowed, whether charging is allowed, power limit percentage, speed limit value, whether the driver can intervene, and whether the fault is recoverable; Determine a target vehicle fault, and determine target fault processing information corresponding to the target vehicle fault according to the mapping relationship; Processing the target vehicle fault according to the target fault processing information; Wherein, the target vehicle fault includes multiple ones; and processing the target vehicle fault according to the target fault processing information includes: Comparing the same type of information in each of the target fault handling information, and selecting the most severe handling method from each of the same type of information to form a first fault handling method; wherein the severity level at which the driver cannot intervene is greater than the severity level at which the driver can intervene; When the first fault handling method includes that the driver can intervene, obtaining a second fault handling method for each of the target vehicle faults input by the driver, and handling each of the target vehicle faults according to the second fault handling method; When the first fault handling method includes that the driver cannot intervene, the vehicle controller handles each of the target vehicle faults according to the first fault handling method; Among them, the target vehicle fault is detected and determined during this power-on cycle; if during this power-on cycle, any of the target vehicle faults occurs multiple times, and the target fault handling information corresponding to any of the target vehicle faults in the multiple times includes that the fault is recoverable, then during this power-on cycle, the target fault handling information of any of the target vehicle faults is set to unrecoverable and the driver cannot intervene.

2. The vehicle fault handling method according to claim 1, characterized in that: The vehicle failure includes logical failure and damage failure of various devices in the vehicle; wherein, the various devices include: at least one of a motor controller, a battery management system, a gearbox, a DC-DC controller, an air pump controller, an oil pump controller, a DC power distribution, an air conditioning system, an instrument and a vehicle controller.

3. The vehicle fault handling method according to claim 1, characterized in that: The obtaining of the mapping relationship between vehicle faults and fault handling information includes: Obtaining a mapping relationship between a fault identification of a vehicle fault and fault handling information; wherein the fault identification includes: a fault flag or a fault code; The determining of the target vehicle fault and determining target fault processing information corresponding to the target vehicle fault according to the mapping relationship includes: A target fault identifier of a target vehicle fault is determined, and target fault processing information corresponding to the target fault identifier is determined according to the mapping relationship.

4. The vehicle fault handling method according to claim 3, characterized in that: The step of determining a target fault identifier of a target vehicle fault includes: When the vehicle is awakened by a vehicle key or by charging, a fault detection is performed on the vehicle to determine a target vehicle fault and a target fault identifier corresponding to the target vehicle fault.

5. The vehicle fault handling method according to claim 1, characterized in that: The processing of the target vehicle fault according to the target fault processing information includes: For any target vehicle fault, if the target fault processing information corresponding to the any target vehicle fault includes that the fault is recoverable, then when the condition causing the any target vehicle fault no longer exists, recover the any target vehicle fault; If the target fault processing information corresponding to any of the target vehicle faults includes that the fault is unrecoverable, then during this power-on cycle, the target vehicle fault is locked as unrecoverable.

6. A vehicle controller, characterized in that: The vehicle controller is used to execute any one of the vehicle fault handling methods in claim 1 to claim 5.

7. A vehicle, characterized in that: Including the vehicle controller as claimed in claim 6.

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