The invention belongs to the technical field of low-voltage power supply of new energy vehicles, and particularly relates to a battery system for low-voltage power supply of a vehicle through a DCDC module and the vehicle. Ni DCDC modules are arranged in the ith battery pack of the battery system, Ni is larger than or equal to 1, i is equal to 1, 2,..., K, and K represents the total number of the battery packs; all battery cells in the battery pack with Ni = 1 are connected in series and then connected with the high-voltage end of the DCDC module; the battery cells in the battery pack with Ni greater than or equal to 2 are divided into N groups, the battery cells in one group are connected in series and then are connected with the high-voltage end of one DCDC module, and the battery cells in different groups are connected with the high-voltage ends of different DCDC modules; the low-voltage ends of the DCDC modules are connected in parallel and then used for outputting low-voltage electricity so as to supply power to a vehicle low-voltage system. In addition, the DCDC module is protected by directly using the battery pack and the shell of the battery system, and a protection structure of the DCDC module does not need to be additionally arranged, so that the cost is reduced.

    本发明属于新能源汽车低压供电技术领域,具体涉及一种通过DCDC模块进行车辆低压供电的电池系统及车辆。电池系统的第i个电池包内设置有Ni个DCDC模块,Ni≥1,i=1,2,……,K,K表示电池包总个数;Ni=1的电池包内所有电芯串联后连接DCDC模块的高压端连接;Ni≥2的电池包内电芯被划分为N组,处于一组内的电芯串联后连接一个DCDC模块的高压端,且不同组电芯连接不同DCDC模块的高压端;各个DCDC模块的低压端并联后用于输出低压电,以向车辆低压系统供电。DCDC模块直接使用电池包和电池系统的外壳进行防护,不需要额外设置DCDC模块的保护结构,降低了成本。


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    Title :

    Battery system for low-voltage power supply of vehicle through DCDC module and vehicle


    Additional title:

    一种通过DCDC模块进行车辆低压供电的电池系统及车辆


    Contributors:
    SUN SHUWEI (author) / ZHANG HONGTAO (author) / WANG GUOQIANG (author)

    Publication date :

    2025-05-06


    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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