A power battery system of an electric vehicle comprises a parallel access end, N groups of parallel battery string modules and a parallel access end which are connected in sequence; the N is larger than 1, and each battery string module comprises a BMU control module provided with a CAN bus, and a parallel access end, a BMU execution unit, a series battery cell and a parallel access end which are connected in sequence. A plurality of battery string modules are connected in parallel to form the power battery system battery pack, so that the battery pack configuration is more flexible, the battery string modules do not influence each other, and the battery pack can be input and withdrawn at any time. According to the structure, the flexibility of parallel connection of the battery string modules is improved, energy recovery of the new energy automobile is facilitated, and the endurance mileage is increased; therefore, the electric vehicle is safer and more reliable in operation, the purposes of simplicity and convenience in maintenance and flexible and quick charging mode are achieved, the service life of the whole vehicle is greatly prolonged, and meanwhile, good economic benefits and social benefits are achieved.
一种电动汽车动力电池系统,包括顺序连接的并联接入端,N组并联的电池串模块、并联接入端,N大于1,电池串模块包括设置CAN总线的BMU控制模块和顺序连接的并联接入端、BMU执行单元、串联电芯、并联接入端。本发明采用多串电池串模块并联组成动力电池系统电池组,使电池组配置更加灵活,保证了电池串模块之间互不影响且可以随时投入和退出电池组,增加了电池串模块并联的灵活性,便于新能源汽车的能量回收,提高了续航里程,使电动汽车运行更安全可靠、达到了维修简单方便、充电方式灵活快捷的目的,大大提高了整车使用寿命,同时有很好的经济效益和社会效益。
Power battery system of electric automobile
一种电动汽车动力电池系统
2021-11-30
Patent
Electronic Resource
Chinese
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