The invention provides a quick charging method for a battery management system with a safety function. According to the method, self-inspection is carried out on a battery system, the state of a quickcharging gun is sent to a vehicle control unit, the battery management system and a charging pile shake hands, carry out identification, and interact, a quick charging relay is closed, and the stateof the quick charging relay is sent to the vehicle control unit. In the charging process, if the battery breaks down, processing is carried out according to the fault level, and if the state of chargeof the battery reaches a set value, the battery management system receives an emergency power-off request sent by the vehicle control unit to disconnect the relay and judges whether the current on aloop is reduced to a specified value or not so as to ensure that the relay cannot be disconnected with load; and meanwhile, after the current drops for more than the specified time, the relay needs tobe disconnected in time no matter whether the current drops or not, so that the quick charging process is safer and more reliable, and the safety and reliability of the quick charging process are ensured.

    本发明提出一种带有安全功能的电池管理系统快充方法,对电池系统进行自检,将快充枪状态发送给整车控制器,电池管理系统与充电桩进行握手、辨识和交互,闭合快充继电器并将快充继电器状态发送给整车控制器,在充电过程中如果电池发生故障,根据故障等级分别进行处理,若电池荷电状态达到设定值,电池管理系统收到整车控制器发送的紧急下电请求断开继电器,判断回路上的电流是否降低至规定的值,以保证继电器不会带载断开,同时等待电流下降超过规定的时间后,无论电流是否降低,都要及时断开继电器,本发明能够使快充流程更加安全可靠,保证快充流程的安全性和可靠性。


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    Title :

    Quick charging method for battery management system with safety function


    Additional title:

    一种带有安全功能的电池管理系统快充方法


    Contributors:
    LI XIAOYI (author) / SONG QINGGUO (author) / DOU YASHENG (author) / LI KANG (author) / WAN YINGBING (author)

    Publication date :

    2021-02-26


    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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