The invention discloses an electric quantity monitoring method and device of a battery pack, a battery management system and an electronic device.The method comprises the steps that when it is detected that the battery pack enters a low-current working mode, the current of the high-voltage side of a voltage converter is obtained, the high-voltage side of the voltage converter is connected with the battery pack, and the low-voltage side of the voltage converter is connected with a low-voltage electricity load; determining the power consumption of the battery pack in the low-current working mode according to the current of the high-voltage side and the duration of the low-current working mode; the residual electric quantity of the battery pack is determined according to the power consumption, so that accurate monitoring and calculation of the residual electric quantity of the battery pack in a low-current working mode can be realized under the condition that hardware of an existing current sampling circuit does not need to be changed, the problem of insufficient low-current sampling precision is effectively solved, the cost is reduced, and the power consumption of the battery pack is reduced. And the working precision of the battery management system is improved.

    本发明公开了一种电池包的电量监控方法、装置、电池管理系统及电子装置,该方法包括:检测到电池包进入低电流工作模式时,获取电压转换器的高压侧的电流,其中,电压转换器的高压侧连接电池包,电压转换器的低压侧连接低压用电负载;根据高压侧的电流及低电流工作模式的持续时长确定在低电流工作模式下电池包的耗电量;根据耗电量确定电池包的剩余电量,从而可以在无需对现有电流采样电路进行硬件改动的情况下,实现对低电流工作模式下电池包的剩余电量的精准监测与计算,有效地解决了小电流采样精度不足的问题,进而在降低成本的同时,提升了电池管理系统的工作精度。


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    Title :

    Electric quantity monitoring method and device of battery pack, battery management system and electronic device


    Additional title:

    电池包的电量监控方法、装置、电池管理系统及电子装置


    Contributors:
    YAN LEI (author) / FU JUN (author) / YUAN SHAOKUI (author) / YUAN SHUAI (author) / ZHOU BINJIE (author)

    Publication date :

    2025-04-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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