The invention provides a battery management system and an awakening diagnosis circuit thereof, and belongs to the technical field of awakening of battery management systems. In order to realize safety monitoring after the whole electric automobile is powered off, a battery management system cannot be thoroughly powered off. Therefore, the wake-up diagnosis circuit capable of achieving thorough power failure of the battery management system when the vehicle is parked is designed, the wake-up diagnosis circuit comprises a controller and a power supply chip, the input end of the controller is in constant electric connection with a low-voltage power supply, the output end of the controller is connected with the power supply chip, and the enabling end of the controller is used for receiving an enabling signal; the power supply chip is also in power supply connection with the battery management system. Only when the enable end of the controller receives the enable signal, the controller input end and the controller output end can be connected, and when the enable end of the controller cannot receive the enable signal, the controller input end and the controller output end are disconnected. By the adoption of the method, reliable guarantee can be provided for safety monitoring of the electric vehicle in the long-term shelving state, and consumption of electric energy of the whole vehicle can be reduced.

    本发明提供了一种电池管理系统及其唤醒诊断电路,属于电池管理系统唤醒技术领域。为实现电动汽车在整车下电后的安全监控,电池管理系统无法彻底断电。因此,本发明设计了一种可以实现车辆停放时电池管理系统彻底断电的唤醒诊断电路,包括控制器和电源芯片,控制器的输入端与低压电源常电连接,控制器的输出端与电源芯片连接,控制器的使能端用于接收使能信号;电源芯片还与电池管理系统供电连接。控制器的使能端只有在接收到使能信号时,才能导通控制器输入端和控制器输出端,在无法收到使能信号时,控制器输入端和控制器输出端断开。采用本发明,能够为电动车辆在长期搁置状态下的安全监控提供可靠保障,而且能够减少整车电能的消耗。


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    Title :

    Battery management system and wake-up diagnosis circuit thereof


    Additional title:

    一种电池管理系统及其唤醒诊断电路


    Contributors:
    MA QIANJIN (author) / CUI YONGSHUAI (author) / ZHANG YAHUI (author) / WANG ZHENG (author) / ZHANG HONGTAO (author)

    Publication date :

    2023-07-21


    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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