The invention discloses a battery management system for active equalization of an electric vehicle battery pack. The battery management system comprises a switch assembly, a multi-winding transformer,a microcontroller and a battery pack monitor, wherein the multi-winding transformer is electrically connected with the two ends of the battery pack and electrically connected with the two ends of each battery in the battery pack; the switch assembly is arranged in a loop in which the multi-winding transformer is electrically connected with the battery pack and each battery; the battery pack monitor is used for collecting voltage data of each battery; and the microcontroller is connected with the battery pack monitor through a serial interface and used for reading the voltage data collected bythe battery pack monitor and controlling on-off of the switch assembly according to the obtained voltage data. The equalization current of the high-capacity battery pack can reach several amperes todozens of amperes, the equalization efficiency is high, and the equalization time is short.

    本发明公开了一种电动车电池组主动均衡的电池管理系统,包括开关组件、多绕组变压器、微控制器和电池组监控器,多绕阻变压器与电池组的两端电连接以及分别与电池组中的每一电池的两端电连接,开关组件设在多绕组变压器与电池组及每一电池电连接的回路中,电池组监控器用于采集每一电池的电压数据,微控制器通过串行接口连接电池组监控器,用于读取电池组监控器采集的电压数据,并依据获得的电压数据控制开关组件的通断。本发明大容量电池组均衡电流可达几安培至十几安培,并且均衡效率高、均衡时间短。


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    Title :

    Battery management system for active equalization of electric vehicle battery pack


    Additional title:

    一种电动车电池组主动均衡的电池管理系统


    Contributors:
    YANG ZONG (author) / OUYANG XUEMING (author) / MAO LIANGPING (author)

    Publication date :

    2020-05-15


    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 / 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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