The invention discloses a power battery system and a charging and discharging method thereof, and relates to the technical field of battery management, the system comprises a battery management unit, a battery pack circuit breaking unit and a plurality of power battery modules; each power battery module comprises a plurality of single batteries; the battery management unit is used for controlling the battery pack circuit breaking unit to switch the connection mode of the power battery module; the connection modes comprise series connection and parallel connection; when the power battery modules are connected in series, the power battery modules are charged; when the power battery modules are connected in parallel, the power battery modules supply power to the load circuit. The power battery module is charged in series and discharged in parallel, the charging efficiency is high, the charging time is greatly shortened, a low-voltage platform of an original system is considered, and the power battery module has the advantages of being safe and low in cost.

    本申请公开了一种动力电池系统及其充放电方法,涉及电池管理技术领域,该系统包括电池管理单元、电池包断路单元以及若干动力电池模组;每一动力电池模组包括若干电池单体;电池管理单元用于控制电池包断路单元切换动力电池模组的连接方式;连接方式包括串联连接和并联连接;动力电池模组串联连接时,对动力电池模组充电;动力电池模组并联连接时,动力电池模组向负载电路供电。本申请对动力电池模组进行串联充电,并联放电,既具有较高的充电效率,将充电时间大大缩短,又兼顾原有系统的低电压平台,具有安全、低成本的特点。


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    Title :

    Power battery system and charging and discharging method thereof


    Additional title:

    一种动力电池系统及其充放电方法


    Contributors:
    WEN MING (author) / YU KAI (author) / CUI GANGRAN (author)

    Publication date :

    2025-05-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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