The invention provides an early warning method and device for an automobile power battery and an automobile, and the method comprises the steps: obtaining a first voltage value of each single battery of the automobile power battery in a full charge state for the first time and a second voltage value of each single battery in a full charge state for N subsequent charging times, and N is a positive integer; according to the first voltage value and the N second voltage values, a characteristic voltage difference value sequence of each single battery is obtained, and the characteristic voltage difference value sequence comprises N-1 characteristic voltage difference values; determining a characteristic pressure difference value rising process according to the N-1 characteristic pressure difference values; according to the rising process of the characteristic voltage difference value, obtaining an abnormal coefficient of the abnormal single battery; and outputting an early warning result according to the abnormal coefficient of the abnormal single battery. According to the scheme, the abnormal condition of the battery can be accurately recognized, and corresponding abnormal early warning is output.

    本发明提供一种汽车动力电池的预警方法、装置及汽车,方法包括:获取汽车动力电池的各电池单体在首次充电满电态的第一电压值以及后续充电N次充电满电状态的第二电压值,N为正整数;根据所述第一电压值和N个第二电压值,获得各电池单体的特征压差值序列,所述特征压差值序列包括N‑1个特征压差值;根据所述N‑1个特征压差值,确定特征压差值上升过程;根据所述特征压差值上升过程,获得异常电池单体的异常系数;根据所述异常电池单体的异常系数,输出预警结果。发明的方案可以准确识别电池异常情况,并输出相应的异常预警。


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    Title :

    Early warning method and device for automobile power battery and automobile


    Additional title:

    一种汽车动力电池的预警方法、装置及汽车


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

    Publication date :

    2023-04-04


    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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