a0型纯电动汽动力总成参数匹配与性能仿真分析.pdf

A0 型纯电动汽车动力总成参数匹配与性能仿真分析 摘 要 节能环保型的纯电动汽车较其它类型的车辆有许多优点，但电池的续驶里 程和充电时间大大制约了纯电动车的发展和普及。因此，在现有电池的条件下， 需要优化纯电动车的动力总成系统来达到整车动力性和经济性要求，这是广大 研究人员追求的目标，也是本文研究的重点。 本文结合某企业研制开发的A0 型纯电动汽车项目，以整车动力性、经济性 为指标，对动力总成的关键参数（电机参数、电池参数、传动比和变速箱挡位 数）进行计算分析。运用ADVISOR2002 软件对A0 车进行性能仿真，通过将仿真 结果、样车试验数据与设计目标对比，发现采用单速比方案时，样车的爬坡能 力较差，达不到设计要求。根据样车爬坡能力不足的原因，提出了为A0 车匹配 一款两挡变速器的方案，以提高其爬坡能力。然后对两挡变速器的速比进行了 计算和优化，并仿真分析了采用两挡变速器方案的 A0 车。仿真结果显示，当 A0 车采用两挡变速器方案时，其爬坡能力明显得到提高，而且各项指标均达到 了设计要求，证明了A0 车采用两挡变速器的方案在理论上是可行的，为开发第 二代纯电动汽车提供了理论依据。 关键词：纯电动汽车；动力总成；参数匹配；两挡变速器 A0 Electric Vehicle Power-train Parameters Matching and Performance Simulation Analysis ABSTRACT Energy-saving and environment-friendly electric cars have many advantages compared with other types of vehicles, but driving range and charging time for batteries significantly restrict the development and popularity of the electric vehi- cle. Therefore, under the present condition of the battery, need to optimize the electric vehicle power-train system to meet th e requirements of vehicle power per- formance and fuel economy, which is the researchers ’target, and also the focus of this paper. The focus of this article is to compute and analyze the power-train parameters, including motor parameters and cell parameters , the number of transmission ratios and transmission shift, and the target is vehicle power performance and fuel economy. The prototype is A0 electric vehicle which is researched and developed by a vehicle enterprise . Using ADVISOR2002 software to compute the vehicle performance, and by comparing simulation results, prototype data with the target of the designing, the climbing capacity of the prototype is not satisfied by using sin- gle-speed ratio scheme. By the reason of