A 12V battery system capable of increasing endurance mileage comprises a BMS battery management module, a constant electricity/low voltage electric appliance, a high-voltage power battery pack and a step-down DCDC, the BMS battery management module is connected with the constant electricity/low voltage electric appliance and the step-down DCDC, the high-voltage power battery pack is connected with the step-down DCDC, and the step-down DCDC is connected with the constant electricity/low voltage electric appliance. The BMS battery management module is connected with the high-voltage power battery pack through a voltage reduction DCDC, the voltage reduction DCDC converts electric energy of the high-voltage power battery pack to supply power to the common/low-voltage electric appliance, a voltage reduction DCDC is further connected between the BMS battery management module and the high-voltage power battery pack, the BMS battery management module comprises a new energy automobile starting battery, and the new energy automobile starting battery is a 12V lithium battery; the 12V lithium battery can supply power to the high-voltage power battery pack through boosting DCDC to increase endurance. A 12V lithium battery power supply scheme can be flexibly switched, when low-voltage power supply is carried out under the extreme condition, low-voltage long-time stable power supply can be guaranteed, Meanwhile, when the requirement for endurance mileage supplement is met, electric quantity is discharged, so that the high-voltage part of the whole vehicle is supported.

    一种增加续航里程的12V电池系统,包括BMS电池管理模块,常电/低压用电器,高压动力电池组,降压DCDC,所述BMS电池管理模块与所述常电/低压用电器、降压DCDC连接,所述高压动力电池组与所述降压DCDC连接,由所述降压DCDC转换所述高压动力电池组电能为所述常用/低压用电器供电,所述BMS电池管理模块和高压动力电池组之间还连接有升压DCDC,所述BMS电池管理模块包括新能源汽车启动电池,所述新能源汽车启动电池为12V锂电池;所述12V锂电池可通过升压DCDC为高压动力电池组供电增加续航。本发明能灵活切换12V锂电池供电方案,在极端情况下进行低压供电时,能保证低压长时间稳定供电的同时亦能满足续航里程补充有需求时,放出电量从而实现对整车高压部分的支撑。


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    Title :

    12V battery system capable of increasing endurance mileage


    Additional title:

    一种增加续航里程的12V电池系统


    Contributors:
    LI CHENYONG (author) / ZHANG HONGLEI (author)

    Publication date :

    2021-07-06


    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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