New energy automobile fault data processing method and processing device

Abstract

The invention discloses a new energy automobile fault data processing method, which relates to the technical field of new energy automobiles. The new energy automobile fault data processing method comprises the steps of: (1) before a fault occurs, storing whole automobile data in an A cache region of a random access memory, and after the A cache region is full, covering and updating original databy using new whole automobile data; (2) when a fault occurs, recording time of fault occurrence, storing fault data in a B cache region of the random access memory, copying the fault data to a C cacheregion of the random access memory for transition at first when the B cache region is full, then storing the fault data in the C cache region into an E storage region of an external expansion FLASH memory, covering and updating original data in the B cache region by using new fault data, repeating the transfer storage action after the B cache region is full of the updated new fault data, and repeating the cycle; and (3) when the E storage region is full, rearranging and storing the whole vehicle data in the A cache region into a D storage region of the external expansion FLASH memory according to a time sequence.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a method and device for processing fault data of new energy vehicles. Background technique [0002] The on-board diagnostic system is an important part of the new energy vehicle integrated control system used to monitor the operation of the vehicle controller at any time. Once the on-board diagnostic system finds that the vehicle is running abnormally, it will light up the fault light to warn and send the fault information Stored in memory, maintenance personnel can read relevant information in the form of fault codes through standard diagnostic instruments and diagnostic interfaces, so as to quickly and accurately determine the type and cause of the fault. [0003] Due to the large amount of data that needs to be stored and recorded during vehicle operation, the phenomenon of insufficient memory memory often occurs. At present, the vehicle controller generally uses ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and device for processing fault data of new energy vehicles, the main purpose of which is to solve the problem that the failure data storage mode of existing new energy vehicles is not set properly, resulting in insufficient comprehensive fault data records and affecting the analysis and analysis of maintenance personnel. Dealing with issues such as

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