The invention provides a correction method and device for representing the residual electric quantity of a vehicle power battery and an automobile, and the method comprises the steps: obtaining an actual current value, a maximum voltage value and a real residual electric quantity value of the power battery in real time; when the power battery is charged, respectively comparing the actual current value, the maximum voltage value and the actual residual electric quantity value with corresponding preset judgment thresholds in real time to obtain a voltage following strategy comparison result; judging whether the voltage meets a preset voltage pre-following condition or not according to a voltage following strategy comparison result, and if the preset voltage pre-following condition is met, outputting a voltage following correction residual electric quantity value; and the final display residual electric quantity value is corrected according to the output voltage following the corrected residual electric quantity value. According to the method, a voltage following strategy, current and time limitation entering voltage following and real SOC limitation are introduced, voltage following entering at the tail end of charging is recognized, and the problem that the SOC of an instrument is abnormal due to real SOC estimation errors during charging is avoided.

    本发明提供一种表征车用动力电池剩余电量的修正方法、装置及汽车,包括,实时获取动力电池的实际电流值、最大电压值及真实剩余电量值;当所述动力电池进行充电时,分别将实际电流值、最大电压值及真实剩余电量值与对应的预设判断阈值实时比较,得到电压跟随策略比较结果;根据电压跟随策略比较结果判断电压是否满足预设的电压预跟随条件,若满足预设的电压预跟随条件,则输出电压跟随修正剩余电量值;并根据输出的电压跟随修正剩余电量值修正最终的显示剩余电量值。本发明引入电压跟随策略、进入电压跟随的电流和时间限制以及真实SOC限制,识别在充电进入末端时进入电压跟随,避免了充电时因真实SOC估算误差导致的仪表SOC异常问题。


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    Title :

    Correction method and device for representing residual electric quantity of vehicle power battery and vehicle


    Additional title:

    一种表征车用动力电池剩余电量的修正方法、装置及汽车


    Contributors:
    HU RUI (author) / ZHOU XIAOLONG (author) / WANG ZHEN (author) / LU JIALUN (author) / YU XIANGSONG (author)

    Publication date :

    2023-05-05


    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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