纯电动汽车传动系参数匹配的研究

Study on matching in power train parameters on pure electric vehicles

分析了纯电动汽车传动系参数的选择对电动汽车性能的影响,指出电动机额定功率/转矩必须与传动系参数相匹配,对电动汽车传动系传动比与挡位数的确定原则进行了探讨。以某一型号纯电动汽车为研究对象,分析了采用手动五挡变速器时两个挡位的驱动力图,提出去掉机械齿轮变速器而代之以固定速比的传动系是行之有效的,理论上可以提高传动系效率,减小能量消耗。

Influences on the performances of pure electric vehi- cles （PEV） in the choice of power train parameters were analyzed. Pointed out the preferences of the motor rating power / torque must be matched to the power train parameters. The determining principle of transmission ratio and numbers was explored and discussed. Based on XL2000 PEV, the figures of driving force and velocity were studied in using five number transmissions. The heavier mechanical gears transmission being replaced by constant ratio one is possible. It can increase the power train efficiency and decrease the energy consumption