Abstract: Power performance is the most basic and important performance of pure electric vehicles. Modeling and simulation analysis of the whole vehicle power of pure electric vehicles is of great significance to improve the design level of new energy vehicles. In this paper, the maximum speed, acceleration ability and climbing ability are selected as the power evaluation indicators of pure electric vehicles and the power model of pure electric vehicles is established. Then the model is simulated by MATLAB to obtain the power simulation curve of pure electric vehicles. Finally, the main factors affecting the power of pure electric vehicles are analyzed. The results show that motor peak power and air drag coefficient are the main factors affecting the power performance of pure electric vehicles.

Key words: Pure electric vehicles; Power; Model analysis; MATLAB modeling and simulation

摘要： 动力性是纯电动汽车各项性能中最基础、最重要的性能，纯电动汽车整车动力进行建 模和仿真分析，对提高新能源汽车设计水平有重要意义。文章首先选取最高车速、加速能力 和爬坡能力作为纯电动汽车动力性评价指标并建立纯电动汽车动力性模型，然后通过 MATLAB 对模型进行仿真模拟，得到纯电动汽车动力性仿真曲线，最后分析纯电动汽车的动 力性影响因素。结果表明电机峰值功率和空阻系数是纯电动汽车动力性能的主要影响因素。

关键词: 纯电动汽车；动力性；模型分析；MATLAB 建模仿真