Abstract: Taking the composite power supply system of pure electric vehicles as the research object, this paper analyzes and studies the advantages and limitations of four traditional composite power supply topologies. Based on the composite power supply controlled by supercapacitors, a new type of composite energy storage system topology is designed, with supercapacitors participating in the entire process and significantly improving utilization efficiency. To verify the rationality of the new topology structure, simulations are conducted under AVL Cruise. The simulation results showed that compared to traditional composite power structure electric vehicles, this new structure further reduces the charging and discharging current of the power battery, and further improves the driving range of the entire vehicle.

Key words: Composite power supply; Structural design; AVL Cruise

摘要： 以纯电动汽车复合电源系统为研究对象，对四种传统的复合电源拓扑结构具有的优势 和局限性进行分析和研究；以超级电容主控式的复合电源为基础，设计了一种新型复合储能 系统拓扑结构，超级电容全程参与工作，利用率得到显著提高。为验证新型拓扑结构的合理 性，在 AVL Cruise 下进行了仿真，仿真结果表明，相比于传统复合电源结构的电动汽车，该 新型结构使动力电池充放电电流进一步减小，且整车的续驶里程得到了进一步提高。

关键词: 复合电源；结构设计；AVL Cruise