The invention discloses a battery pack passive equalization control circuit, a control method thereof and a failure detection and remediation circuit and method. The passive equalization circuit comprises a plurality of series cells, a passive equalization dissipation resistor and a fuse, wherein each cell is equipped with two switches. The failure detection circuit comprises a standby resistor, aswitch, a standby fuse and a current sensor, wherein the switch, the standby fuse and the current sensor are arranged on a standby resistor branch. A microcontroller sends out a detection and maintenance signal according to on-off of the fuse and the current obtained by the current sensor. According to the passive equalization control circuit, the number of resistors, fuses and current sensors inan existing control circuit is reduced, and the cost is saved. Meanwhile, the failure control circuit is provided with backups of the equalization resistor and the fuse, the problem that the existingpassive equalization control circuit cannot continue to work after the equalization resistor is short-circuited and disconnected is solved by replacing the fuse and the equalization resistor after the main body fails, and failure detection and timely remediation of the passive equalization circuit are achieved.

    本发明公开了一种电池组被动均衡控制电路和方法及其失效检测补救电路和方法,被动均衡电路包括:多个电池串联单体以及每个电池单体配有两个开关,一个被动均衡耗散电阻及保险丝;失效检测电路包括备用电阻以及备用电阻支路上的开关,一个备用保险丝,电流传感器,微控制器根据保险丝的通断以及电流传感器得到的电流大小来发出检测与维修信号。该被动均衡控制电路减少了现有控制电路中的电阻、保险丝、电流传感器的数量,节省了成本;同时,该失效控制电路具有均衡电阻以及保险丝的备份,在主体失效后可以通过更换保险丝和均衡电阻,解决了现有被动均衡控制电路在均衡电阻短路及断路后无法继续工作,实现了被动均衡电路失效检测与及时补救。


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    Title :

    Battery pack passive equalization control circuit, control method thereof and failure detection and remediation circuit and method


    Additional title:

    一种电池组被动均衡控制电路和方法及其失效检测补救电路和方法


    Contributors:
    LI GUOCHUN (author) / LIU CHANG (author)

    Publication date :

    2020-04-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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



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