The invention relates to the technical field of new energy vehicles, and provides a method and device for determining the state-of-charge value of a power battery of a vehicle. The method comprises the following steps: determining judgment duration according to the state-of-charge value of the power battery when the vehicle is stopped last time; acquiring the downtime of the vehicle; determining an initial state-of-charge value of the power battery according to the downtime of the vehicle and the judgment duration; and determining the state-of-charge value of the power battery based on an ampere-hour integral method according to the initial state-of-charge value of the power battery. The method can accurately estimate the state-of-charge value of the power battery.

    本发明涉及新能源车辆技术领域,提供一种车辆的动力电池荷电状态值的确定方法和装置。所述方法包括:根据所述车辆上次停机时所述动力电池的荷电状态值,确定判定时长;获取所述车辆的停机时间;根据所述车辆的停机时间以及所述判定时长,确定所述动力电池的初始荷电状态值;根据所述动力电池的初始荷电状态值,基于安时积分法,确定所述动力电池的荷电状态值。本发明可以精确估算动力电池荷电状态值。


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    Title :

    Method and device for determining state-of-charge value of power battery of vehicle


    Additional title:

    车辆的动力电池荷电状态值的确定方法和装置


    Contributors:
    WU MAIQING (author) / SONG DANDAN (author) / WANG SHENGBO (author) / YAN GANG (author) / ZHANG NAN (author)

    Publication date :

    2021-01-26


    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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