The invention relates to the technical field of electric vehicle batteries, in particular to a battery pack and a battery pack management method. The battery pack comprises a high-voltage power battery pack, a low-voltage power supply battery pack, a DC/DC converter and a battery management system, positive and negative electrodes of the high-voltage power battery pack and the low-voltage power supply battery pack are respectively connected with the same battery management system; the high-voltage power battery pack and the battery management system form a high-voltage power charge-discharge loop, and the low-voltage power supply battery pack and the battery management system form a low-voltage power supply charge-discharge loop; the high-voltage power battery pack is connected in series with the low-voltage power supply battery pack through a fourth relay; and the high-voltage power battery pack is connected into the low-voltage power supply charging and discharging loop through a DC/DC After the technical scheme is adopted, one set of battery management system meets the monitoring and safety guarantee of the high-voltage power battery and the low-voltage power supply battery, one battery pack is internally provided with two types of batteries, wire harnesses and connectors are saved, and the charging efficiency is improved from the charging strategy.

    本发明涉及电动汽车电池技术领域,尤其涉及一种电池包及电池包管理方法。一种电池包包括:高压动力电池组、低压供电电池组、DC/DC转换器和电池管理系统;高压动力电池组的正负极和低压供电电池组的正负极分别连接同一电池管理系统;高压动力电池组与电池管理系统组成高压动力充放电回路,低压供电电池组与电池管理系统组成低压供电充放电回路;高压动力电池组通过第四继电器低压供电电池组串接,高压动力电池组通过DC/DC转换器接入所述低压供电充放电回路。采用上述技术方案后,一套电池管理系统满足高压动力电池和低压供电电池的监控和安全保障,一个电池包里具备两种电池,节省线束以及接插件,且从充电策略上提高了充电效率。


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    Titel :

    Battery pack and battery pack management method


    Weitere Titelangaben:

    一种电池包及电池包管理方法


    Beteiligte:
    CHENG MIN (Autor:in)

    Erscheinungsdatum :

    25.04.2023


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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