The invention discloses a charging control circuit and a charging control method. The control circuit comprises a low-voltage storage battery, an awakening relay, a DC-DC module, a vehicle control unit and a BMS control unit, wherein the awakening relay comprises a normally open contact and a relay coil, and one end of the normally open contact and one end of the relay coil are both connected withthe low-voltage storage battery; an awakening signal input end of the DC-DC module is connected with the other end of the normally open contact, and an output end of the DCDC module is connected withthe low-voltage storage battery; an awakening signal input end of the vehicle control unit is connected with the other end of the normally open contact, and the awakening signal input end of the vehicle control unit is further connected with the DCDC module; and the BMS control unit is connected with the other end of the relay coil, is awakened when receiving the trigger signal sent by the fast charging pile, and awakens the vehicle control unit and the DCDC module through awakening the relay, and the vehicle control unit controls the DCDC module to output a preset voltage to supply power tothe low-voltage storage battery. The charging control circuit can enable an electric automobile DC12V low-voltage system to realize charging by using DC12V and DC24V quick charging piles.

    本发明公开了一种充电控制电路和充电控制方法,其中控制电路包括:低压蓄电池;唤醒继电器,其包括常开触点和继电器线圈,常开触点的一端和继电器线圈的一端均与低压蓄电池连接;DC‑DC模块,其唤醒信号输入端与常开触点的另一端连接,输出端与低压蓄电池连接;整车控制器,其唤醒信号输入端与常开触点的另一端连接,其还与DC‑DC模块连接;BMS控制单元,其与继电器线圈的另一端连接,其在接收到快充桩发送的触发信号时被唤醒,并通过唤醒继电器唤醒整车控制器和DC‑DC模块,整车控制器控制DC‑DC模块输出预设电压给低压蓄电池供电。该充电控制电路可使电动汽车DC12V低压系统使用DC12V和DC24V快充桩均能实现充电。


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    Title :

    Charging control circuit and charging control method


    Additional title:

    充电控制电路和充电控制方法


    Contributors:
    FAN DAOXIANG (author) / HUANG RUI (author) / ZHAI HAORONG (author) / WANG FEI (author) / ZHANG BIN (author) / SHA WENHAN (author)

    Publication date :

    2021-01-29


    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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