The invention provides a battery management system and an automobile. The battery management system comprises a current detection circuit, an overcurrent comparison circuit, a differential signal generation circuit, a differential signal conversion circuit and a controller. The current detection circuit is used for detecting current of the battery. The overcurrent comparison circuit is used for receiving the current, comparing the current with a reference current, and outputting a comparison signal. The differential signal generation circuit is used for receiving the comparison signal and generating a corresponding differential signal according to the comparison signal. The differential signal conversion circuit is used for receiving a differential signal and converting the differential signal into a single-ended output signal. And the controller is used for receiving the single-ended output signal and sending out a corresponding operation instruction according to the single-ended output signal, so that the battery is in a safe state. According to the invention, the overcurrent warning signal is transmitted by using the differential signal, interference of an external electromagnetic environment is avoided during signal transmission, the overcurrent warning signal can be responded in time, and safety and reliability are realized.

    本申请提供一种电池管理系统及汽车。电池管理系统包括电流检测电路、过流比较电路、差分信号产生电路、差分信号转换电路及控制器。电流检测电路用于检测电池的电流。过流比较电路用于接收电流,并与参考电流进行比较,输出比较信号。差分信号产生电路用于接收比较信号,并根据比较信号产生相应的差分信号。差分信号转换电路用于接收差分信号,并将差分信号转换为单端输出信号。控制器用于接收单端输出信号,并根据单端输出信号发出相应的操作指令,使电池处于安全状态。本申请利用差分信号传输过流警告信号,在信号传输时避免受到外界电磁环境的干扰,能及时响应过流警告信号,安全可靠。


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    Title :

    Battery management system and automobile


    Additional title:

    电池管理系统及汽车


    Contributors:
    LYU YANG (author) / CHEN DETING (author) / LIU GANG (author) / HE XIN (author) / ZHANG XIAONING (author) / ZHI YUECHEN (author) / NIU YAQI (author)

    Publication date :

    2023-06-06


    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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