Aiming at the large difference of electric energy consumption caused by different acceleration modes of pure electric vehicles during acceleration,a pure electric vehicle is taken as the research obj ect. The different acceleration curves are expressed by establishing a pure electric vehicle acceleration curve mode based on acceleration characteristic parameter βi,the relationship between different accelerating curves and their energy consumption is researched,taking the energy consumption per unit mileage as the evaluation index,the energy consumption per unit mileage of the pure electric vehicle under different acceleration curves is obtained by the experiments of pure electric vehicle with different acceleration characteristic parameters.Finally,with the results of the experiment,the effect of different acceleration modes on electric energy consumption of pure electric vehicle is verified.The experimental results show that the unit mileage energy consumption of the convex acceleration mode is smaller than the concave ac-celeration mode ,and the smaller the βi is,the smaller the unit energy consumption is.When βi=0.5, the energy consumption per unit mileage is 37.6% smaller than βi=1.4.%针对纯电动汽车在加速过程中不同加速方式导致电能量消耗差异较大的问题,以某款纯电动汽车为研究对象,通过建立加速特征参数βi 的纯电动汽车加速曲线模型来研究不同βi 与纯电动汽车电能量消耗之间的关系.同时,以单位里程能耗为评价指标,通过不同βi 时的纯电动汽车整车实验,获得不同加速曲线下纯电动汽车单位里程能耗,验证不同加速方式对纯电动汽车电能量消耗的影响.结果表明:上凸型加速方式其单位里程能耗比下凹型加速方式低,且βi 越小,其单位里程能耗越低,当βi=0 .5 时,其单位里程能耗比βi=1.4 时小 37.6%.
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