The invention provides a vehicle-mounted lithium battery internal resistance fault detection system and method, and belongs to the technical field of vehicle-mounted low-voltage lithium batteries, and the system comprises a BMS monitoring data obtaining module which is used for obtaining monitoring data of a vehicle-mounted lithium battery and sending the monitoring data of the vehicle-mounted lithium battery to a main control chip module, and the main control chip module is used for receiving the monitoring data of the vehicle-mounted lithium battery and sending the monitoring data of the vehicle-mounted lithium battery to the vehicle-mounted low-voltage lithium battery. And the data processing module is used for calculating an average value based on the monitoring data of the vehicle-mounted lithium battery to obtain a steady-state current, calculating the internal resistance of the vehicle-mounted lithium battery based on the steady-state current to obtain a calculation result, and matching the calculation result with a preset standard threshold to obtain an internal resistance fault detection result of the vehicle-mounted lithium battery. According to the invention, the purposes of detecting the internal resistance of the battery and obtaining a high-precision detection result can be achieved.

    本发明提供了一种车载锂电池内阻故障检测系统及方法,属于车载低压锂电池技术领域,该系统包括:BMS监控数据获取模块,用于获取车载锂电池的监控数据,并将所述车载锂电池的监控数据发送至主控芯片模块,所述主控芯片模块,用于基于所述车载锂电池的监控数据进行平均值计算,得到稳态电流,基于所述稳态电流进行车载锂电池内阻计算,得到计算结果,并将所述计算结果与预设的标准阈值进行匹配,得到车载锂电池内阻故障检测结果。本发明能够实现对电池内阻进行检测,并得到高精度的检测结果的目的。


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    Title :

    Vehicle-mounted lithium battery internal resistance fault detection system and method


    Additional title:

    车载锂电池内阻故障检测系统及方法


    Contributors:
    LIU CHE (author) / LIU CHANGLAI (author) / XIA SHIZHONG (author) / CHEN NIAN (author) / JIANG HUAN (author) / ZHANG ZHE (author)

    Publication date :

    2024-07-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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