电动汽车不同加速方式的电能量消耗研究

Research on Electric Energy Consumption in Different Ways of Accelerating on Electric Vehicle

针对电动汽车在不同加速方式下电能量消耗差异大的问题,研究了电动汽车按照不同加速方式进行加速时其单位里程能耗差异。推导了电动汽车加速过程中其单位里程能耗与车速、加速度之间的关系,分析了在多加速度与单加速度方式作用下其单位里程能耗的不同。以某款电动汽车为对象,对其不同加速方式下的电能量消耗进行了实车可行性实验。结果表明:与单加速度方式相比,电动汽车上凸型多加速方式的单位里程能耗较小,下凹型多加速方式的单位里程能耗较大。

As the great differences of the electric energy consumption are generated when electric vehicles （EV） accelerates in different ways, this study researched on the difference of energy consumption per kilometer when accelerating in different ways. The relation between the electric energy consumption and speed as well as acceleration of the EV was derived. Also, the differences of the electric energy consumption when accelerating in multi-acceleration way and single-acceleration way was analyzed. Finally, the feasibility of the research was verified through an EV test. The result showed that compared with the single-acceleration way, the EV consumed less electric energy per kilometer when using the convex multi-acceleration way while consumed more electric energy per kilometer when using the concave multi- acceleration way.