多驱动模式纯电动车的开发与性能研究

发布时间：2019-01-16 00:24

【摘要】：面对日益紧迫的能源、环境问题,发展以电动汽车为代表的新能源汽车已成为世界各国加快推进交通能源战略转型的重要措施。我国将新能源汽车列入引导未来经济社会发展的七大战略性新兴产业之一后,专门于2012年发布了《节能与新能源汽车产业发展规划(2012～2020年)》。预计未来一段时间内,我国还将继续加大政策支持力度,以推动我国新能源汽车产业加快发展。在此背景下,电动汽车成为当前的研究热点,而能够直接决定电动汽车性能的驱动系统更是研究的重中之重。近年来多电动机、多驱动模式已经逐渐成为了电动汽车的发展趋势,本文基于该要求设计了一种新型纯电动汽车布局方案。在完成该布局方案下的各个元件的选型及参数匹配的前提下,对整车性能进行了仿真分析。本文的主要工作内容和成果如下：(1) 设计了双电动机多驱动模式的电动汽车布局方案,并对其进行了机构设计。经过分析和比较,最终选定了双头输出电动机串联式布局方案作为EV-1型纯电动汽车的布局方案,该方案可实现单前驱、双前驱、单后驱、双后驱、前后各自驱、全驱等6种驱动模式。(2) 结合国家相关政策和实验室的基本要求提出了EV-1型纯电动汽车的目标参数。对电动机、动力电池及离合器等元件进行选型,并根据整车目标参数完成各个元件的参数匹配。(3) 利用仿真软件,建立了纯电动汽车的动力学模型；在对原型车实车改装之前,预测了EV-1型纯电动汽车的整车性能。仿真结果表明,车辆的续航里程,最高车速、加速性能、爬坡性能基本达到了设计要求。且双电动机驱动模式与单电动机模式相比,具有明显的性能优势。(4) 本文研究了包括整车质量、整车电压、电池组排列方式、踏板特性及两电动机的功率分配比在内的各参数对整车性能的影响,并根据结果对各参数进行优化,提高了整车的续航里程。
[Abstract]:In the face of increasingly urgent energy and environmental problems, the development of new energy vehicles, represented by electric vehicles, has become an important measure for countries in the world to speed up the strategic transformation of transportation energy. After our country listed the new energy automobile as one of the seven strategic emerging industries to guide the future economic and social development, it issued the "Energy Saving and New Energy Automobile Industry Development Plan (2012-2020)" in 2012. It is expected that in the future, China will continue to increase policy support to promote the rapid development of China's new energy automobile industry. Under this background, electric vehicle (EV) has become a hot research topic, and the driving system, which can directly determine the performance of EV, is the most important part of the research. In recent years, multi-motor and multi-drive mode has gradually become the trend of electric vehicle development. Based on this requirement, a new type of pure electric vehicle layout scheme is designed in this paper. On the premise of the selection and parameter matching of each component under the layout scheme, the performance of the whole vehicle is simulated and analyzed. The main contents and achievements of this paper are as follows: (1) the layout scheme of electric vehicle with double motor multi-drive mode is designed and the mechanism is designed. After analysis and comparison, the series layout scheme of double head output motor is selected as the layout scheme of EV-1 pure electric vehicle. This scheme can realize single front drive, double front drive, single rear drive, double rear drive, and front and back drive. (2) the target parameters of EV-1 type pure electric vehicle are put forward in combination with the relevant national policies and the basic requirements of the laboratory. The components such as motor, power battery and clutch are selected, and the parameters of each component are matched according to the target parameters of the vehicle. (3) the dynamic model of pure electric vehicle is established by using the simulation software. The vehicle performance of EV-1 pure electric vehicle is predicted before the prototype vehicle is refitted. The simulation results show that the mileage, the maximum speed, the acceleration performance and the climbing performance of the vehicle basically meet the design requirements. Compared with single motor mode, the dual motor drive mode has obvious performance advantages. (4) this paper studies the whole vehicle quality, vehicle voltage, battery pack arrangement. The pedal characteristics and the power distribution ratio of the two motors affect the performance of the whole vehicle. According to the results, the parameters are optimized to improve the range of the whole vehicle.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U469.72

【相似文献】