The invention provides a power battery safety early warning method and device and an automobile. The method comprises the steps of obtaining operation data of an automobile power battery; according to the operation data, the charging process voltage increment of the automobile power battery is obtained; calculating an increment average value according to the voltage increment in the charging process; calculating a characteristic value according to the charging process voltage increment and the increment average value; and carrying out early warning on the automobile power battery according to the characteristic value. According to the scheme, abnormal monomers can be recognized in advance, measures are taken actively, and the thermal runaway proportion of the electric vehicle is reduced.

    本发明提供一种动力电池安全预警方法、装置及汽车,方法包括:通过获取汽车动力电池的运行数据;根据所述运行数据,获得汽车动力电池的充电过程电压增量;根据所述充电过程电压增量,计算增量平均值;根据所述充电过程电压增量和所述增量平均值,计算特征值;根据所述特征值,对汽车动力电池进行预警。本发明的方案能够提前识别异常单体,积极采取措施,降低电动汽车热失控比例。


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    Title :

    Power battery safety early warning method and device and automobile


    Additional title:

    一种动力电池安全预警方法、装置及汽车


    Contributors:
    MU BAO (author) / GENG ZHAOJIE (author) / YUAN WENJING (author) / HUANG RONG (author) / WANG KANGKANG (author)

    Publication date :

    2023-05-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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