Active diagnosis method of electric vehicle fault

Abstract

The invention discloses an active diagnosis method of an electric vehicle fault, belonging to the technical field of electric vehicles. The method comprises the steps that: (S1) a host computer system monitors a selected current vehicle fault and sending a fault diagnosis instruction to a whole vehicle controller, (S2) the whole vehicle controller reads a fault code of the current vehicle fault according to the received fault diagnosis instruction and starts a diagnostic strategy corresponding to the fault code, (S3) the whole vehicle controller sends a current vehicle fault reason code obtained through diagnosis to the host computer system, and (S4) the host computer system searches a reason of the current vehicle fault and a fault solution in a database according to the received current vehicle fault reason code and carries out text display. Through the communication between the host computer system and the whole vehicle controller, the vehicle fault is actively diagnosed, and the accuracy and efficiency of the fault diagnosis are improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a method for actively diagnosing faults of electric vehicles. Background technique [0002] With the rapid development of electric vehicles, the mass production of electric buses by OEMs is faced with the problems of slow production speed, poor production quality consistency and difficult vehicle diagnosis. The traditional electric bus fault maintenance mainly relies on the after-sales personnel of the OEM, and the deep fault even depends on the technical personnel of the OEM to solve the problem. The maintenance is difficult and the cycle is long, resulting in low efficiency and low accuracy of the fault maintenance of the entire vehicle. Contents of the invention [0003] The purpose of the present invention is to provide an active diagnosis method for the whole vehicle failure of an electric vehicle, so as to improve the maintenance efficiency of the whole vehicle ...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of electric vehicles, the production of large-scale electric buses of OEMs is facing the problems of slow production speed, poor production quality consistency and difficult vehicle diagnosis

The fault maintenance of traditional electric buses mainly relies on the after-sales personnel of the vehicle factory, and the deep faults even rely on the technical personnel of the vehicle factory to solve them. Maintenance is difficult and the cycle is long, resulting in low efficiency and low accuracy of vehicle fault maintenance

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