The invention discloses an electric vehicle power battery thermal runaway early warning method based on real vehicle data, and the method comprises the steps: obtaining a voltage data set of all single batteries of a power battery pack based on the real-time operation of a vehicle, and calculating the voltage Shannon entropy of each single battery in the obtained voltage data set, and a local outlier factor algorithm is used for the obtained voltage Shannon entropy of each single battery, an LOF value of the voltage Shannon entropy of each single battery at each moment is obtained based on a time window, a threshold value is set, and power battery thermal runaway early warning is realized based on the LOF value of the voltage Shannon entropy of each single battery. According to the invention, data is simple and easy to collect, real-time early warning of the vehicle thermal runaway fault can be realized earlier, and the fault single battery can be positioned.

    本发明公开了一种基于实车数据的电动汽车动力电池热失控预警方法,包括获取基于车辆实时运行的动力电池包所有单体电池的电压数据集,计算所获取电压数据集内各单体电池的电压香农熵,对得到的各单体电池的电压香农熵使用局部离群因子算法,基于时间窗得到每个时刻各单体电池电压香农熵的LOF值,设定阈值,基于各单体电池电压香农熵的LOF值实现动力电池热失控预警。本发明数据精简易采集,可以更早实现车辆热失控故障的实时预警,并且可以定位故障单体电池。


    Access

    Download


    Export, share and cite



    Title :

    Electric vehicle power battery thermal runaway early warning method based on real vehicle data


    Additional title:

    一种基于实车数据的电动汽车动力电池热失控预警方法


    Contributors:
    AISATO YASUSHI (author) / MA JIAN (author) / LIU SHUAIYI (author) / GONG XIANWU (author) / MA YUCHENG (author) / LYU JINGJING (author) / QIU ZHIPENG (author)

    Publication date :

    2022-11-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    Electric vehicle power storage battery thermal runaway early warning system

    LIU HAIYANG / ZHONG CHUAN / YU WEI et al. | European Patent Office | 2021

    Free access

    Electric vehicle power battery thermal runaway early warning method and system

    YU MEIXIN / SONG KAITONG / WANG HENG et al. | European Patent Office | 2023

    Free access

    Power battery thermal runaway early warning method and device and electric vehicle

    WANG XIAOTING / ZHANG QIANHUI / PANG BO et al. | European Patent Office | 2022

    Free access

    Electric vehicle battery pack thermal runaway early warning system and method

    WU WENCHEN / XU GUOWEI / FAN HAO et al. | European Patent Office | 2020

    Free access

    Electric vehicle power storage battery thermal runaway early warning method, device and system

    WANG CHENGLONG / JIANG JIBING / ZHENG JIAN et al. | European Patent Office | 2020

    Free access