The invention relates to a battery system under-voltage protection circuit and method applied to an electric bicycle BMS. The battery system under-voltage protection circuit comprises a control switchwhich comprises a first switching end, a second switching end and a control end; the control end is used for controlling the first switch end and the second switch end to be connected or disconnected; and a OR logic gate of which the input end is connected with the self-jacking signal end of a battery management system, and the output end is connected with the control end of the control switch; when the battery management system detects that the voltage of the battery reaches an under-voltage protection point, the self-jacking signal end outputs a low level to disconnect the first switch endand the second switch end. According to the battery system under-voltage protection circuit and method, when the battery management system detects that the voltage of the battery of the electric bicycle reaches the under-voltage protection point, the battery management system enables the first switch end and the second switch end to be disconnected, thereby preventing the battery from being seriously fed and damaged because the battery is stored for a long time and the battery management system continuously consumes power.

    本申请涉及一种应用于电动自行车BMS的电池系统欠压保护电路和方法,该电池系统欠压保护电路包括:控制开关,包括第一开关端、第二开关端和控制端;所述控制端用于控制所述第一开关端和第二开关端连接或者断开;或逻辑门,输入端连接所述电池管理系统的自顶信号端,输出端连接所述控制开关的控制端;所述电池管理系统检测到所述电池的电压达到欠压保护点时,所述自顶信号端输出低电平使得所述第一开关端和第二开关端断开。上述的电池系统欠压保护电路和方法通过在电池管理系统检测到电动自行车的电池的电压达到欠压保护点时,电池管理系统使得第一开关端和第二开关端断开,避免电池长时间存储而电池管理系统持续耗电而造成的电池严重馈电及损伤。


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    Title :

    Battery system under-voltage protection circuit and method applied to electric bicycle BMS


    Additional title:

    一种应用于电动自行车BMS的电池系统欠压保护电路和方法


    Contributors:
    GUO YUNHUI (author) / LIU WEI (author) / OU PENGJIE (author)

    Publication date :

    2020-06-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 / 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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