The invention provides an equalization method based on a lithium iron phosphate battery, which belongs to the technical field of new energy automobile power battery systems, equalizes a battery pack comprising a plurality of single batteries, and comprises the following steps: equalizing the battery pack in a discharge state until the electric quantity of the single batteries is less than or equal to the average electric quantity of the single batteries in the battery pack; or balancing the battery pack in the charging state until the voltage difference between the single batteries reaches the target voltage difference; or balancing the battery pack in a standing state until the voltage difference between the single batteries reaches the target voltage difference or the electric quantity difference between the single batteries reaches the target electric quantity difference. By setting a plurality of equalization conditions, battery equalization is carried out on the automobile battery pack in the charging, discharging and standing states, a better equalization effect is achieved, and the service life of the power battery is prolonged.

    本发明提供了一种基于磷酸铁锂电池的均衡方法,属于新能源汽车动力电池系统技术领域,对包括若干单体电池的电池组进行均衡,包括以下步骤:放电状态下对电池组进行均衡,直至单体电池电量小于或等于电池组中单体电池平均电量;或,充电状态下对电池组进行均衡,直至单体电池之间的压差达到目标压差;或,静置状态下对电池组进行均衡,直至单体电池之间的压差达到目标压差或单体电池之间的电量差达到目标电量差。本发明通过设置若干均衡条件对汽车电池组在充电、放电和静置状态下进行电池均衡,达到更好的均衡效果,延长动力电池使用寿命。


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    Title :

    Balancing method based on lithium iron phosphate battery


    Additional title:

    一种基于磷酸铁锂电池的均衡方法


    Contributors:
    LIU YISHAN (author) / SONG KAITONG (author) / WANG HENG (author)

    Publication date :

    2023-05-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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




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