The invention provides a power battery low electric quantity protection method, a vehicle and a storage medium, and the method is executed by a vehicle control unit and comprises the steps that a battery management system is controlled to monitor the charge state of a power battery; if the state of charge determined for the first time is not larger than the first state of charge threshold value, the vehicle is controlled to enter a power battery undervoltage prevention mode; determining whether passengers exist in the vehicle or not based on a vehicle-mounted sensor in the power battery undervoltage prevention mode; if the passenger exists, the vehicle is controlled to enter a corresponding energy-saving mode based on the charge state; if no passenger exists, the battery management system is controlled to disconnect the power battery and the high-voltage relay, so that the power battery enters a dormant state. According to the technical scheme provided by the embodiment of the invention, excessive discharge of the power battery can be avoided to the greatest extent, and meanwhile, unnecessary electric quantity waste caused under the condition that no passenger exists can also be avoided.

    本申请提供一种动力电池低电量保护方法、车辆及存储介质,其中,方法由整车控制器执行,包括:控制电池管理系统对动力电池的荷电状态进行监测;若第一次确定荷电状态不大于第一荷电状态阈值,则控制车辆进入动力电池预防欠电模式;在动力电池预防欠电模式下,基于车载传感器确定车内是否存在乘客;若存在乘客,则基于荷电状态控制车辆进入相应节能模式;若无乘客,则控制电池管理系统断开动力电池与高压继电器之间的连接,以使动力电池进入休眠状态。本申请实施例的技术方案能够最大程度的避免动力电池过量放电,同时也可以避免在没有乘客的情况下造成不必要的电量浪费。


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    Title :

    Power battery low electric quantity protection method, vehicle and storage medium


    Additional title:

    一种动力电池低电量保护方法、车辆及存储介质


    Contributors:
    WU WENKE (author) / HUANG XIAOQING (author) / DING TIANXI (author)

    Publication date :

    2023-06-23


    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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