The invention relates to a power supply technology of a new energy automobile, in particular to a power battery system capable of supplying power to a low-voltage control system and part of auxiliaryequipment, and a control method of the power battery system. The power battery system provided by the invention comprises a switch controller, a direct-current voltage transformation module and a battery management module. The switch controller is electrically connected with a power battery of a vehicle and used for supplying power to the direct-current voltage transformation module and controlling the direct-current voltage transformation module to supply power to the battery management module. The direct-current voltage transformation module is used for being electrically connected with low-voltage equipment needing to provide constant electricity in a vehicle. The battery management module is configured to control the direct-current voltage transformation module to supply power to the low-voltage equipment in response to no high-voltage output of the power battery. The phenomenon that the vehicle cannot be started due to power shortage of the battery can be avoided, and the vehiclebody space is saved.

    本发明涉及新能源汽车的供电技术,尤其涉及一种可以为低压控制系统和部分辅助设备供电的动力电池系统,以及该动力电池系统的一种控制方法。本发明提供的上述动力电池系统,包括开关控制器、直流变压模块和电池管理模块。所述开关控制器电性连接车辆的动力电池,用于为所述直流变压模块供电,并控制所述直流变压模块为所述电池管理模块供电。所述直流变压模块用于电性连接车辆中需要提供常电的低压设备。所述电池管理模块配置为响应于所述动力电池无高压输出而控制所述直流变压模块为所述低压设备供电。本发明能够用于避免电池亏电以致无法启动车辆的现象,并节省车身空间。


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    Title :

    Power battery system and control method thereof


    Additional title:

    一种动力电池系统及其控制方法


    Contributors:
    XIAO DEJUN (author)

    Publication date :

    2020-06-02


    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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