The invention discloses an equalization method and device for a series battery pack, and the method comprises the steps: an equalization current I is enabled to be close to 0 when the voltage V at the two ends of a battery does not reach an equalization starting threshold Vth; when the voltage exceeds the voltage threshold Vth, the battery is discharged, the initial current I0 and the equalizing current I are monotonically increased in proportion along with the rise of the battery voltage V, and the higher the battery voltage is, the larger the equalizing current is. According to the invention, the proportional relation between the current and the voltage is accurately controlled, so that the final voltage of each battery string is consistent, and battery equalization is completed.

    本发明公开了一种串联电池组的均衡方法及装置,该均衡方法:当电池两端的电压V没有达到均衡开启阈值Vth,均衡电流I接近于0;当电压超过电压阈值Vth,开始对电池放电,初始电流I0,均衡电流I随电池电压V升高迅速成比例单调增加,电池电压越高,均衡电流越大。本发明通过精准的控制电流和电压的比例关系,使各个电池串最终电压达到一致,完成电池均衡。


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    Title :

    Equalization method and device of series battery pack


    Additional title:

    一种串联电池组的均衡方法及装置


    Contributors:
    WANG TIANCAI (author) / WANG XINMING (author) / ZHANG ZHENG (author)

    Publication date :

    2021-07-23


    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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