The invention relates to a method and device for determining the state of a single battery of a vehicle, a medium and the vehicle, and the method comprises the steps: determining a calculation time window for calculating the state of the single battery according to the obtained running state of the vehicle; voltage information collected for each single battery in the calculation time window is calculated, the collection for each single battery each time comprises the steps of collecting the voltage of each single battery, and collecting the voltage of each single battery according to the voltage of each single battery; calculating a voltage difference value between the voltage of the single battery acquired this time and a median of the voltage of each single battery acquired this time, wherein the voltage information comprises the voltage difference value; calculating variance values among voltage difference values in the voltage information; and determining the state of the single battery of the vehicle according to the magnitude relationship between the variance value and a target variance threshold value. The variance is calculated through the calculation time windows in different operation states, the accuracy of variance calculation can be improved, and then the accuracy of determining the state of the single battery is improved.

    本公开涉及一种确定车辆的单体电池状态的方法、装置、介质及车辆,包括:根据获取到的车辆的运行状态,确定对单体电池状态进行计算的计算时间窗口;计算在计算时间窗口内针对各单体电池采集到的电压信息,其中,每次针对各单体电池的采集包括采集各单体电池的电压,并针对每一单体电池,计算本次采集到的单体电池电压与本次采集到的各单体电池的电压的中位数之间的电压差值,电压信息包括电压差值;计算电压信息中各电压差值之间的方差值;根据方差值与目标方差阈值之间的大小关系,确定车辆的单体电池状态。通过不同运行状态下的计算时间窗口计算方差,可以提高计算方差的准确性,进而提高确定单体电池状态准确性。


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    Title :

    Method and device for determining state of single battery of vehicle, medium and vehicle


    Additional title:

    确定车辆的单体电池状态的方法、装置、介质及车辆


    Contributors:
    YANG LEI (author)

    Publication date :

    2022-12-09


    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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