The invention relates to a power battery charging method and device, a medium and a vehicle. The power battery charging method comprises the following steps: acquiring the power of a vehicle-mounted charger, the power of vehicle-mounted accessories, the heating power provided by the vehicle-mounted charger for a power battery, and the current temperature and the target temperature of the power battery when a vehicle is charged; based on the heating power, determining the heating time required for heating the power battery from the current temperature to the target temperature; determining a first charge state of the power battery on the basis of a difference value between the charge state of the power battery in the full charge state and the charge state increment of the power battery in the heating time; in response to the state of charge of the power battery reaching the first state of charge, the power battery is heated based on the heating power, and the power battery is charged based on the remaining available power. According to the technical scheme, it can be guaranteed that the power battery can be charged to the full-charge state in the low-temperature environment, the low-temperature cruising ability of the electric vehicle is improved, and meanwhile battery heating energy consumption is reduced.

    本公开涉及一种动力电池充电方法、装置、介质及车辆。动力电池充电方法包括:获取车辆充电时的车载充电机功率、车载附件功率、车载充电机所能提供的对动力电池的加热功率以及动力电池的当前温度和目标温度;基于加热功率,确定动力电池从当前温度加热至目标温度所需的加热时间;基于动力电池满电状态时的荷电状态与动力电池在加热时间内的荷电状态增加量的差值,确定动力电池的第一荷电状态;响应于动力电池的荷电状态达到第一荷电状态,基于加热功率对动力电池加热,并基于剩余可用功率对动力电池充电。本公开技术方案能够保证动力电池在低温环境下可充电至满电状态,提升电动汽车的低温续航能力,同时降低电池加热能耗。


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    Title :

    Power battery charging method and device, medium and vehicle


    Additional title:

    动力电池充电方法、装置、介质及车辆


    Contributors:
    LUO HAILING (author)

    Publication date :

    2024-08-16


    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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