The invention provides a charging control method and device, a charging circuit and a vehicle, and the method comprises the steps: carrying out the voltage reduction of a power storage battery of a target vehicle, and reducing the voltage of the power storage battery to a voltage output range of a charging pile; determining a charging mode of the power storage battery based on a comparison result of the maximum output voltage of the charging pile and a first voltage threshold value, and performing charging control on the power storage battery according to the determined charging mode; the charging mode comprises a mode of first high-voltage direct charging and then skipping to low-voltage boost charging. According to the invention, direct charging of the low-voltage charging pile or boost charging of the low-voltage charging pile can be switched after high-voltage direct charging, so that the charging control process is finer; and after the low-voltage charging pile is selected for direct charging, when the current voltage of the battery is further increased, the battery can be switched to the low-voltage charging pile for boosting charging, and the requirement for full charging of the battery can be met. Therefore, the failure process of converting voltage reduction of the power storage battery into direct charging of the high-voltage charging pile is considered, and the reliability of the charging process of the power storage battery is improved.

    本申请提供一种充电控制方法及装置、充电电路及车辆,包括:对目标车辆的动力蓄电池进行降压,将动力蓄电池电压降低至充电桩的电压输出范围内;再基于充电桩的最大输出电压与第一电压阈值的比对结果,确定动力蓄电池的充电方式,并按照确定出的充电方式对动力蓄电池进行充电控制;充电方式包括先高压直充后跳转至低压升压充电的方式。本申请可以在高压直充后跳转至低压充电桩直充或低压充电桩升压充电,使充电控制过程更精细;并且选择低压充电桩直充后,当电池当前电压进一步提升时,可以再切换至低压充电桩升压充电,能够满足电池满充的需求。所以,本申请考虑了动力蓄电池降压转高压充电桩直充的失败过程,提高了动力蓄电池充电过程的可靠性。


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    Titel :

    Charging control method and device, charging circuit and vehicle


    Weitere Titelangaben:

    一种充电控制方法及装置、充电电路及车辆


    Beteiligte:
    LIU MIN (Autor:in) / WANG CHAOJUN (Autor:in) / LIU FUSONG (Autor:in)

    Erscheinungsdatum :

    02.08.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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