The embodiment of the invention provides an electric vehicle charging remaining time estimation method and system and a storage medium, and belongs to the technical field of electric vehicles. The estimation method comprises the following steps: acquiring the current SOC of the battery module, the temperature of each sampling point and the current actual charging current; judging whether the current SOC is smaller than a preset first SOC threshold value or not; when it is judged that the current SOC is smaller than the first SOC threshold value, whether the current SOC is obtained for the first time or not is judged, and whether the current SOC or the temperature of each sampling point changes or not is judged; calculating single cumulative time under the condition that the current acquisition is the first acquisition and the current SOC and/or the temperature of each sampling point are/is changed; the state value of the battery module reaching the next charging current change point is calculated, and the state is updated; under the condition that it is judged that the current SOC is larger than or equal to the first SOC threshold value, tail end charging time is obtained; and calculating the residual charging time according to each single accumulated time and the end charging time. The estimation result of the estimation method is accurate.

    本发明实施例提供一种电动汽车充电剩余时间估计方法、系统及存储介质,属于电动汽车技术领域。所述估计方法包括:获取电池模组的当前SOC、各采样点温度和当前实际充电电流;判断所述当前SOC是否小于预设的第一SOC阈值;在判断所述当前SOC小于所述第一SOC阈值的情况下,判断当前是否为第一次获取、当前SOC或各采样点温度是否发生变化;在判断当前为第一次获取、当前SOC和/或各采样点温度发生变化的情况下,计算单次累计时间;计算电池模组到达下一个充电电流变化点的状态值,更新状态;在判断所述当前SOC大于或等于所述第一SOC阈值的情况下,获取末端充电时间;根据各单次累计时间和所述末端充电时间计算剩余充电时间。该估计方法估算结果较为准确。


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    Title :

    Electric vehicle charging remaining time estimation method and system and storage medium


    Additional title:

    电动汽车充电剩余时间估计方法、系统及存储介质


    Contributors:
    ZENG GUOJIAN (author) / XU YIKA (author) / YANG YANHUI (author) / JI XIANG (author)

    Publication date :

    2024-11-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES



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