Battery management system bms fault self-diagnosis function test platform and test method

Abstract

The invention discloses a battery management system BMS fault self-diagnosis function test platform and a test method. The test platform is characterized in that the test platform comprises a fault injection board, a charging and discharging system, a human-computer interaction system and an analog vehicle power battery pack; the charging and discharging system is used for charging or discharging the analog vehicle power battery pack; the human-computer interaction system is used to issue a fault injection instruction to the fault injection board; the fault injection board receives a fault injection instruction from the human-computer interaction system to generate a hardware fault under the BMS actual working condition, and injects the fault into BMS; and a test result from the fault injection board is received and displayed by the human-computer interaction system to realize the test of a BMS fault self-diagnosis function. According to the invention, automatic test of the BMS fault self-diagnosis function is realized.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a BMS fault self-diagnosis function test platform of a battery management system. Background technique [0002] In response to the improvement of the safety goals of motor vehicle systems, ISO released a new standard of ISO26262 "Road Vehicles - Functional Safety". The standard is mainly positioned in the automotive industry for specific electrical, electronic, programmable electronic components and other components specially used in the automotive field, aiming to improve the functional safety of automotive electronics and electrical products. According to the ISO26262 "Road Vehicles - Functional Safety" standard, the electric vehicle battery management system BMS must have a complete fault diagnosis function in order to achieve the ASIL-D functional safety level. [0003] In order to realize fault diagnosis, some large semiconductor manufacturers in the world have launched chi...

AI Technical Summary

Problems solved by technology

However, so far there is no BMS test system for the BMS fault self-diagnosis function, and automakers can only verify the BMS fault self-diagnosis function by artificially destroying the BMS

This method is not only inconvenient to operate, but also increases the research and development cost of the battery management system BMS

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