The invention provides a lithium battery charging voltage equalization control method and system, and the method comprises the steps: determining a first charging mode of each single lithium battery at a current stage and a second charging mode of each single lithium battery at a next stage based on the monitoring of the charging characteristic parameters of the single lithium batteries in a lithium battery pack in a charging process; when the difference value between the first time when the single lithium battery is switched from the first charging mode to the second charging mode and the current time is smaller than or equal to a preset time difference threshold value, generating a first time data sequence of the charging characteristic parameters, predicting a second time when each single lithium battery is switched from the first charging mode to a second charging mode based on the first time data sequence; and adjusting the charging voltage of the single lithium batteries in the lithium battery pack to align the second time when each single lithium battery in the lithium battery pack is switched from the first charging mode to the second charging mode, so that the problem of overcharging caused by inconsistent capacities of the single batteries in the lithium battery pack can be effectively solved.

    本发明提出了一种锂电池充电电压均衡控制方法及系统,基于监测锂电池组中的单体锂电池在充电过程中的充电特征参数确定每个单体锂电池当前阶段的第一充电模式和下一阶段的第二充电模式,当单体锂电池从第一充电模式切换到第二充电模式的第一时间与当前时间的差值小于或等于预设的时间差阈值时,生成所述充电特征参数的第一时间数据序列,基于所述第一时间数据序列预测每一个单体锂电池从第一充电模式切换到第二充电模式的第二时间;对所述锂电池组中的单体锂电池的充电电压进行调节,以对齐所述锂电池组中各个单体锂电池从第一充电模式切换到第二充电模式的第二时间,能够有效解决锂电池组中单体电池容量不一致所带来的过充问题。


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    Title :

    Lithium battery charging voltage balance control method and system


    Additional title:

    一种锂电池充电电压均衡控制方法及系统


    Contributors:
    WANG RENYUAN (author) / CHEN WEIHAO (author) / LI JUNFENG (author)

    Publication date :

    2025-03-28


    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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