The invention relates to a power battery pack equalization maintenance method and an equalization maintenance instrument. Voltage sampling is performed on a single cell in a power battery pack; a state of charge of the single cell of the power battery and a maximum voltage difference in the battery pack are analyzed; a health state of the power battery pack is judged; an independent power supply is connected to each single cell of the power battery pack; and the single cell is charged and discharged so that the charged states of all the single cells are consistent, and the maximum voltage difference in the battery pack is reduced to below a proper value so as to realize consistency of the power battery pack, achieve a purpose of equalization maintenance, and support the equalization maintenance of any battery pack with less than 360 strings.

    本发明涉及一种动力电池组均衡维护方法及均衡维护仪,对动力电池组内的单体电芯进行电压采样,分析动力电池单体电芯荷电状态和电池组内最大电压差,从而判断动力电池组健康状态,通过连接在动力电池组每个单体电芯上的独立电源,对单体电芯进行充放电,使全部单体电芯荷电态一致,将电池组内最大电压差降到合适值以下,从而实现动力电池组的一致性,达到均衡维护的目的,支持360串以下任意电池组的均衡维护。


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    Title :

    Power battery pack equalization maintenance method and equalization maintenance instrument


    Additional title:

    一种动力电池组均衡维护方法及均衡维护仪


    Contributors:
    LI JINLU (author) / FAN JINRONG (author)

    Publication date :

    2020-10-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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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