The invention discloses a series-parallel battery pack active equalization method based on single inductance, a series-parallel battery pack is formed by connecting m groups of series battery packs inparallel, and each group of series battery pack comprises n single bodies; the equalization topology comprises (2m*n+2m) MOS tubes, (2m*n+2m) diodes and an inductor. According to the active equalization method, the SOC of all the single bodies in the series-parallel battery pack tends to be consistent through equalization topology. The method has the characteristics that (1) based on inductive energy storage, balanced energy can be directly transferred among any single bodies in the series-parallel battery pack, and meanwhile, the balance of all the single bodies in the series-parallel battery pack is realized; 2, the balanced topology energy storage unit is simple in structure, small in size and simple to control; and 3, the equalization topology is easy to expand, and when the number ofsingle batteries in the series battery pack or the number of the series battery packs changes, only the corresponding MOS tubes and diodes need to be increased or decreased.

    本发明公开了一种基于单电感的串并联电池组主动均衡方法,串并联电池组由m组串联电池组并联而成,每组串联电池组包含n个单体;均衡拓扑包括(2m*n+2m)个MOS管、(2m*n+2m)个二极管、一个电感;主动均衡方法为,通过均衡拓扑,使串并联电池组中所有单体的SOC趋于一致。本发明的特点是:①基于电感储能,均衡能量可以在串并联电池组中任意单体间直接转移,同时实现串并联电池组中所有单体的均衡。②均衡拓扑储能单元结构简单、体积小,且控制简单。③均衡拓扑易于扩展,串联电池组内单体数量或串联电池组数量发生变化时,只需增减相应的MOS管及二极管数量。


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    Title :

    Series-parallel battery pack active equalization method based on single inductor


    Additional title:

    一种基于单电感的串并联电池组主动均衡方法


    Contributors:
    GUO XIANGWEI (author) / LIU ZHEN (author) / ZHU JUN (author) / LIU PENGHUI (author) / DU SHAOTONG (author) / XIE DONGLEI (author)

    Publication date :

    2020-08-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / 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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