关键词: 复合电源；结构设计；AVL Cruise

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