Electric vehicle fault repairing method

A technology for repairing electric vehicles and faults, applied in electrical testing/monitoring, instruments, control/regulation systems, etc., can solve problems such as reduced maintenance efficiency, single function of diagnostic instruments, input errors, etc., to achieve enhanced double protection and triple protection Protection and improvement of maintenance efficiency

Active Publication Date: 2020-04-14
DONGFENG COMML VEHICLE CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] However, the diagnostic instrument of this patent has a single function, and when the vehicle identification number (Vehicle Identification Number, abbreviated as VIN code) stored in the vehicle controller is lost or invalid, it can only be repaired by returning the vehicle controller to the manufacturer. Write the correct VIN code into the vehicle controller, but it is impossible to directly write the correct VIN code into the vehicle controller through the diagnostic instrument, which is time-consuming and laborious, and the method of manually inputting the VIN code by maintenance personnel is prone to input errors and many times of input, reducing maintenance efficiency

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  • Electric vehicle fault repairing method

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Embodiment 1

[0041] see figure 1 As shown, the embodiment of the present invention provides a fault repair method for an electric vehicle. The DC voltage converter DCDC, the battery management system BMS, the motor, the cooling system, the air compressor, the steering system, the high-voltage power distribution box and other systems of the electric vehicle respectively have The respective controllers, the vehicle controller and DCDC, BMS, motor, cooling system, air compressor, steering system, high-voltage power distribution box and other systems are connected through the bus. When it is necessary to diagnose the electric vehicle, connect the diagnostic instrument to the Bus, the diagnostic instrument reads the information of all controllers on the bus through the bus. Or DCDC, BMS, motor, cooling system, air compressor, steering system, high-voltage power distribution box and other systems, some systems have their own controllers, some systems have no controllers, and systems with control...

Embodiment 2

[0053] The basic content of embodiment 2 of the present invention is the same as embodiment 1, and difference is:

[0054] In step S2, the diagnostic instrument compares the first VIN code with all the VIN codes stored in it, and judges whether the first VIN code is normal, which specifically includes the following steps:

[0055] S21: The diagnostic instrument traverses all the stored VIN codes, and compares the first VIN code with all the VIN codes stored in it;

[0056] S22: If the first VIN code is equal to one of the VIN codes stored in the diagnostic instrument, it is judged that the first VIN code is normal, indicating that the first VIN code is not damaged and is normal;

[0057] S23: If the first VIN code is not equal to all the VIN codes stored in the diagnostic instrument, it is judged that the first VIN code is abnormal, indicating that none of the first VIN codes belongs to any VIN code stored in the diagnostic instrument, indicating that the first VIN code is abn...

Embodiment 3

[0059] The basic content of embodiment 3 of the present invention is the same as embodiment 1, and difference is:

[0060] In step S3 in Embodiment 3 of the present invention, the diagnostic instrument obtains the second VIN code of the vehicle according to the barcode on the electric vehicle, which specifically includes the following steps:

[0061] The diagnostic device scans the barcode on the electric vehicle to obtain the second VIN code. Obtain the second VIN code directly by scanning the barcode. Compared with manually inputting the VIN code, the accuracy rate is higher and the diagnosis efficiency is improved.

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Abstract

The invention discloses an electric vehicle fault repairing method. The method comprises the following steps that: a first VIN code stored in a vehicle control unit is obtained through a diagnostic apparatus; the diagnostic apparatus compares the first VIN code with all VIN codes stored in the diagnostic apparatus and judges whether the first VIN code is normal or not; and when the first VIN codeis abnormal, the diagnostic apparatus acquires a second VIN code according to a bar code on an electric vehicle, and transmits the second VIN code to the vehicle control unit for storage. When the VINcode stored in the vehicle control unit of the electric vehicle is abnormal, the function of writing the correct VIN code of the electric vehicle into the vehicle control unit and storing the correctVIN code is implemented, repairing of the abnormal VIN code originally stored in the vehicle control unit is completed, the vehicle control unit does not need to be sent to a repairing factory to berepaired again, so that time is saved, and the repairing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of automobile fault diagnosis instruments, in particular to a method for repairing faults of electric vehicles. Background technique [0002] With the development of industrial informatization and the requirements for environmental friendliness, electric vehicles are becoming more and more popular in the market. However, due to the late development of electric vehicles, the market does not know much about electric vehicles, resulting in frequent failures of electric vehicles. Currently on the market All electric vehicles are composed of vehicle controller, DC step-down converter DCDC, battery management system BMS, motor, cooling system, air compressor, steering system, high-voltage power distribution box and other systems. The diagnosis of electric vehicles is actually the diagnosis of electric vehicles. Each of the above systems is diagnosed. [0003] Chinese patent document CN101286067A discloses a vehic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0262G05B2219/24065
Inventor 顾晔杜忠仁苏毅张毅干伟灿刘小星
Owner DONGFENG COMML VEHICLE CO LTD
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