Fault processing method and device

Abstract

The invention discloses a fault processing method and device. The method includes the steps that a vehicle controller of an electric vehicle receives a motor system fault reported by a motor controller, and / or receives a battery system fault reported by a battery controller; the vehicle controller grades current faults and takes corresponding treatment measures according to the grading result. The motor controller and the battery controller report the motor system faults and the battery system faults respectively to the vehicle controller, and accordingly the vehicle controller can comprehensively diagnose and process the faults; the faults are graded, so when different faults happen, processing of the corresponding grade can be conducted, safety of the systems and passengers is protected better, and the satiation that users dislike frequent warning is avoided.

Description

technical field [0001] The present application relates to the technical field of electric vehicles, in particular to a fault handling method and device. Background technique [0002] Electric vehicles are becoming more and more popular. Electric vehicle fault diagnosis and processing technology is an indispensable technology for electric vehicles. Fault diagnosis and processing is aimed at the response and action of electric vehicles when they are in fault mode. If there is no fault handling or improper fault handling strategy, it will cause damage to the vehicle, and even cause serious personal injury, resulting in loss of personnel and property. [0003] At present, the fault diagnosis of electric vehicles is concentrated on the vehicle controller and all faults are processed in the same way. The problem brought about by this is that the vehicle will also give a warning or stop when a minor fault occurs, which brings potential danger. For example, a sudden stop while driv...

AI Technical Summary

Problems solved by technology

Failure to handle the fault or improper fault handling strategy will cause damage to the vehicle, and even cause serious personal injury, resulting in loss of personnel and property

[0003] At present, the fault diagnosis of electric vehicles is concentrated on the vehicle controller and all faults are processed in the same way. The problem brought about by this is that the vehicle will also give a warning or stop when a minor fault occurs, which brings potential danger. For example, a sudden stop while driving at high speed may cause a car accident and give users a bad experience

In addition, if only the vehicle controller diagnoses its own faults, it cannot obtain other system faults

Moreover, the fault handling is only considered from the perspective of the components themselves, lacking consideration from the whole vehicle, and lack of transitional handling strategies, which makes the handling easy to one-sided

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