The invention discloses a pre-charging circuit, a control method of the pre-charging circuit, a battery management system and an electric vehicle. The positive electrode of the power battery is connected with the first end of the capacitor; the first end of the pre-charging inductor is connected with the first end of the capacitor, and the second end of the pre-charging inductor is connected with the second end of the capacitor; the pre-charging switch is connected in series between the negative electrode of the power battery and the first end of the pre-charging inductor; the input end of the switch control module is connected with the negative electrode of the power battery, the output end of the switch control module is connected with the pre-charging switch, and the switch control module is used for obtaining a circuit signal in the pre-charging circuit, comparing the circuit signal with a reference signal to obtain a voltage value comparison result and outputting the voltage value comparison result. And controlling the on-off of the pre-charging switch according to the voltage value comparison result and the clock signal. According to the embodiment provided by the invention, the pre-charging efficiency and the safety and energy-saving performance of the battery system can be improved.

    本发明公开了一种预充电路及其控制方法、电池管理系统、电动汽车,该电路包括:电容器;动力电池,动力电池的正极与电容器的第一端连接;预充电感,预充电感的第一端与电容器的第一端连接,预充电感的第二端与电容器的第二端连接;预充开关,串联连接于动力电池的负极与预充电感的第一端之间;开关控制模块,开关控制模块的输入端与动力电池的负极连接,开关控制模块的输出端与预充开关连接,用于获取预充电路中的电路信号,对电路信号和参考信号进行比较处理得到电压值比较结果,根据电压值比较结果和时钟信号控制预充开关的通断。根据本发明提供的实施例,能够提高预充电效率、电池系统的安全性和节能性。


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    Title :

    Pre-charging circuit and control method thereof, battery management system and electric vehicle


    Additional title:

    预充电路及其控制方法、电池管理系统、电动汽车


    Contributors:
    OUYANG WENBIN (author) / XIONG BENBO (author)

    Publication date :

    2023-03-10


    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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