The invention discloses an automobile power battery pack preheating method and system, an automobile, equipment and a storage medium. The method comprises the following steps of when the automobile is in a parking state, determining a cooling rate according to a minimum value of battery cell temperatures of battery cells in the power battery pack at a parking time point and a preset reference environment temperature; if an estimated minimum temperature obtained according to the minimum value in the battery cell temperatures, the automobile use time point, the parking time point and the cooling rate being smaller than a preset target temperature threshold value, and a self-heating time point being determined according to the battery preheating temperature rise rate, the estimated minimum temperature and the preset target temperature threshold value; and preheating the power battery pack at the self-heating time point. According to the method, the power battery pack is preheated at the self-heating time point, it can be guaranteed that the battery temperature reaches the target temperature threshold value at the automobile use time point to the maximum extent, the preheating duration between the self-heating time point and the automobile use time point can be shortest, and preheating efficiency and the automobile use experience of a user are improved.

    本发明公开了一种汽车动力电池组预热方法、系统、汽车、设备及存储介质,该方法在汽车处于停车状态时,根据动力电池组中各电芯在停车时间点的各电芯温度中的最小值以及预设参考环境温度,确定降温速率;若根据电芯温度中的最小值、汽车使用时间点、停车时间点以及降温速率得到的预估最低温度小于预设目标温度阈值,根据电池预热升温速率、预估最低温度以及预设目标温度阈值确定自加热时间点,在自加热时间点开始对动力电池组进行预热。本发明在自加热时间点对动力电池组进行预热,可以最大程度保证电池温度在汽车使用时间点达到目标温度阈值,且可以使自加热时间点和汽车使用时间点之间的预热时长最短,提升了预热效率和用户用车体验。


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    Title :

    Automobile power battery pack preheating method and system, automobile, equipment and storage medium


    Additional title:

    汽车动力电池组预热方法、系统、汽车、设备及存储介质


    Contributors:
    LING HEPING (author) / SONG GAN (author) / SHI JIANYONG (author) / PING LANG (author) / LUO YILI (author)

    Publication date :

    2022-01-14


    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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