The invention relates to a lithium battery BMS charging wake-up and charging signal detection circuit. The circuit comprises a voltage division circuit, an optocoupler isolation circuit, a detection wake-up circuit and a grounding isolation circuit. The voltage division circuit is respectively connected with the optical coupler isolation circuit and the grounding isolation circuit, and the optical coupler isolation circuit is also connected with the detection wake-up circuit; wherein the voltage division circuit is used for dividing an initial voltage of an external power supply into an input voltage of the optocoupler isolation circuit; the optical coupler isolation circuit is used for isolating an external signal from a vehicle BMS (Battery Management System); the detection wake-up circuit is used for detecting whether charging is currently carried out or not and waking up a vehicle BMS system; the grounding isolation circuit is used for isolating external power source grounding from vehicle BMS system grounding. An external signal is isolated from the BMS through the optical coupler isolation circuit, the BMS is prevented from being interfered by the external signal, the charging signal is detected through the charging detection interface, and the charging state of the lithium battery is known.

    本发明涉及一种锂电池BMS充电唤醒及充电信号检测电路,其包括:分压电路、光耦隔离电路、检测唤醒电路以及接地隔离电路;所述分压电路分别与所述光耦隔离电路和所述接地隔离电路连接,所述光耦隔离电路还与所述检测唤醒电路连接;其中,所述分压电路用于将外部电源的初始电压分压成所述光耦隔离电路的输入电压;所述光耦隔离电路用于将外接的外部信号与车辆BMS系统进行隔离;所述检测唤醒电路用于检测当前是否正在充电以及唤醒车辆BMS系统;所述接地隔离电路用于将外部电源接地与车辆BMS系统接地进行隔离。本发明通过光耦隔离电路将外部信号与BMS进行隔离,避免BMS受到外部信号干扰,并通过充电检测接口实现对充电信号的检测,了解锂电池的充电状态。


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    Title :

    Lithium battery BMS charging wake-up and charging signal detection circuit


    Additional title:

    一种锂电池BMS充电唤醒及充电信号检测电路


    Contributors:
    ZHANG YUPING (author) / HU ZHENGGUANG (author) / BIE CHUANYU (author) / LUO FAN (author) / WANG CHAOJING (author) / WANG XUEQING (author) / SONG HUAWEI (author)

    Publication date :

    2024-03-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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