Fault processing method and device based on battery management system of pure electric vehicle

Abstract

The invention discloses a fault processing method and device based on a battery management system of a pure electric vehicle, and belongs to the technical field of vehicle fault management. The method comprises the steps: after a certain target fault is monitored, detecting the authenticity of the target fault, and if the method determines that the target fault occurs, reporting a fault code corresponding to the target fault; and determining the fault level of the reported fault code, determining the fault type corresponding to the fault level, and adopting a fault processing mechanism corresponding to the fault type, wherein the higher the fault level is, the more serious the fault type corresponding to the fault level is, and the faster the response time is. Through the more subdivided fault levels and the processing mode thereof, a large number of fault codes can be classified and processed in a modularized mode, and the driving personal safety is improved.

Description

technical field [0001] The invention belongs to the technical field of vehicle fault management, and more specifically relates to a fault processing method and device based on a pure electric vehicle battery management system. Background technique [0002] The battery management system must always perform fault diagnosis during the start-up and operation of the electric vehicle to ensure the safe operation of the vehicle. With the functional subdivision of the battery management system and the requirements of functional safety, more and more fault codes need to be detected. Different types of fault codes need to be handled differently, and processing mechanisms for different types of faults are added. Most of the existing fault processing mechanisms are roughly classified, which cannot handle more fault types reasonably, and may easily lead to some less serious faults. The fault has set up a processing mechanism that may be too strict, but it has caused more serious harm to ...

AI Technical Summary

Problems solved by technology

[0002] The battery management system must always perform fault diagnosis during the start-up and operation of the electric vehicle to ensure the safe operation of the vehicle. With the functional subdivision of the battery management system and the requirements of functional safety, more and more fault codes need to be detected. Different types of fault codes need to be handled differently, and processing mechanisms for different types of faults are added. Most of the existing fault processing mechanisms are roughly classified, which cannot handle more fault types reasonably, and may easily lead to some less serious faults. The fault has set a processing mechanism that may be too strict, but it has caused more serious harm to the driver's driving process

Or set up a separate processing method for each fault, making the program too complicated and difficult to maintain

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