Comparison Research of Electric Vehicles Equipped with Fixed Ratio Gearbox and Two-Speed Gearbox

作者：Yulong Yin, Xiaofeng Yin, Wei Luo, Hua Sun · 发表于：International Journal of Recent advances in Mechanical Engineering · 年份：2017 · DOI：10.14810/ijmech.2017.6201 · 被引用次数：3 · 研究领域：Gear and Bearing Dynamics Analysis、Mechanical Engineering and Vibrations Research、Electric and Hybrid Vehicle Technologies

Parameters of powertrain system directly affect the dynamic performance and economy of electric vehicles (EVs). In order to further explore the impact of the structure of powertrain system on vehicle performance, the parameters of driving motor and automatic transmission are calculated based on the performance requirements of the target vehicle. Gear ratios of transmissions with fixed ratio gearbox and two-speed gearbox are optimized respectively. The EVs with two transmission schemes are simulated under three driving cycles using the optimized gear ratios. The simulation results show that both transmissions can satisfy the requirement of vehicle power performance, while the economy of EV with two-speed gearbox is better than that of EV with fixed ratio gearbox.