摘 要
随着全球能源危机和环保问题日益凸显，世界各国都在积极推进节能环保发展战略。而交通运输占据了世界能源消耗的很大一部分，于是人们对于能耗少、污染小的新型交通工具的需求愈来愈强烈。某两挡电动汽车作为未来最具潜力的交通工具正快速发展。但是，在电动汽车电池技术尚未得到突破性进展的情况下，怎样合理匹配某两挡电动汽车动力传动系统，对整车的动力性、经济性和续驶里程显得尤为关键。
首先，本文对电动汽车的基本结构、工作原理作了简单介绍，对电动汽车的国内外发展趋势做了扼要分析；其次，对电动汽车动力传动系统布置方案进行了设计，且对电动机、动力电池以及传动系统（包括变速器和主减速器）等主要部件进行了理论匹配选型，并得到匹配结果；然后，基于Cruise仿真软件建立了某两挡电动汽车整车模型，并将整车参数和匹配结果输入到Cruise中的CYC-NEDC、CYC-UDDS、CYC-ECE-EUDC、CYC-1015四种常用循环工况下得到仿真结果；最后，将仿真结果同理论匹配结果进行对比分析，得出仿真结果符合理论匹配设计结果，满足整车动力性、经济性的结论，从而验证了本设计的正确性、合理性。
关键字：某两挡电动汽车，动力传动系统，匹配选型，建模仿真
ABSTRACT
As the increasingly serious situation currently in the global energy crisis and the environmental issue, all countries worldwide have been actively promoting the development strategy of the energy-conserving and environment-protective. However, the traffic transportation accounts for a large part of the energy consumption of the world's. Accordingly, the increasingly requirement of the new type vehicle which is characterized by low energy consumption and little pollution that people is longing to achieve. Therefore, the Pure Electric Vehicle is being a stage of the rapid development as the most potential vehicle in the future. But, under the problem in which the Electric Vehicle battery technology has not yet made a breakthrough, and how to reasonably match the Pure Electric Vehicle powertrain system, in which the consideration is the key point for the the dynamic property, economical efficiency and the range of the vehicle.
Above all, this paper would briefly introduce the basic structure and the working principle of the Electric Vehicle, as well as briefly analysis the domestic and out development trend of the Electric Vehicle, Secondly, making a design for the layout plan of the Electric Vehicle powertrain system, and making a theoretical matching selection and achieving the matching results for the critical pieces of the motor, battery and transmission system and so on (including the transmission and the main reducer), then it establishes the Pure Electric Vehicle model which based on the simulation software of the Cruise ,therefore we could get the simulation result by inputting the vehicle parameters and the matching results into the four common states of cycle operation which includes the CYC-NEDC, CYC-UDDS, CYC-ECE-EUDC, and CYC-1015. Finally, making a comparable analysis of the simulation results with the theoretical matching results, and getting a result that the simulation result meets with the design results of the theoretical matching, and meeting the needs of the property of the vehicle power, economical efficiency, and thereby verifying the correctness and reasonableness of the design.
Keywords: Pure Electric Vehicle, powertrain system, matching selection, modeling simulation
