纯电动汽车双电机单行星排动力系统构型设计与分析  

Design and Analysis of Powertrain Configuration of Pure Electric Vehicle with Dual Motor and Single Planetary Gear

作　　者：胡建军[1,2] 梅博 彭航 杨颖[2] HU Jian-jun;MEI Bo;PENG Hang;YANG Ying(The State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China;Department of Automotive Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044 [2]重庆大学汽车工程学院,重庆400044

出　　处：《中国公路学报》2021年第6期238-249,共12页China Journal of Highway and Transport

基　　金：国家重点研发计划项目(2018YFB0106100);重庆市技术创新与应用示范项目重大主题专项项目(cstc2018jszx-cyztzx0047)。

摘　　要：纯电动汽车是当前缓解能源危机与环境污染问题的理想方案之一。然而,现阶段纯电动汽车的推广和发展却受到续驶里程较短等瓶颈问题的制约,难以得到有效普及。为了克服上述问题并进一步提升纯电动汽车的最大续驶里程和综合行驶性能,提出一种纯电动汽车双电机单行星排动力系统构型方案及其系统分析方法。采用一种表征动力源部件与机械耦合机构节点之间内约束关系的通用矩阵式拓扑设计方法,系统探索基于基础构型方案的所有可行性备选构型,获得各备选构型的输出特性,并自动生成备选构型的拓扑结构表达式和动力学模型。采用基于动态规划算法的全局最优控制策略对所有备选构型的最佳经济性和最佳动力性能进行仿真,通过比较备选构型的性能以筛选获得综合性能出色的双电机单行星排动力系统构型。研究结果表明:通过该方法对备选构型的最优能耗经济性与极限最优动力性能进行仿真测试,共获得25种满足能耗与动力性能筛选条件的构型;以单电机驱动构型方案作为参考构型,最终得到5种最优能耗经济性与最优动力性能均优于参考构型的优化构型方案解集,其中具有最佳经济性和动力性构型的0~120 km·h-1极限加速时间为10.973 1 s,最优能耗经济性为13.610 6 kW·h·100 km-1;该方法能够有效筛选获得经济性和动力性能优异的纯电动汽车双电机单行星排动力系统构型,进一步提升纯电动汽车的最大续驶里程和综合行驶性能。Pure electric vehicle is one of the ideal solutions to alleviate the energy crisis and environmental pollution. However, at this stage, the promotion and development of pure electric vehicles are restricted by problems such as the short driving range, which hinders an effective popularization. To overcome the above problems and improve the maximum driving range and comprehensive driving performances of pure electric vehicles, a design scheme and analysis method for the powertrain configuration of a pure electric vehicle with a dual motor and single planetary gear were proposed. A general matrix topology design method was used to characterize the internal constraint relationship between the power source components and mechanical coupling mechanism nodes. All feasible alternative configurations based on basic configuration schemes were systematically analyzed. The output characteristics of each alternative configuration were obtained. The topological structure expression and dynamic model of the alternative configurations were automatically generated. The global optimal control strategy based on a dynamic programming algorithm was used to simulate the optimal economy and dynamic performances of all alternative configuration dynamic models. By comparing the performance of the alternative configuration, the optimal configuration of a dual-motor single-planetary-row power system with an excellent comprehensive performance was selected. Through a simulation test of the optimal energy consumption economy and ultimate optimal dynamic performances of the alternative configurations, a total of 25 configurations meeting the screening conditions of energy consumption and dynamic performance are obtained. Considering the single motor drive configuration as the reference configuration, the optimal energy consumption economy and optimal power performances of five configurations are better than those of the reference configuration. The 0-120 km·h-1 acceleration time is 10.973 1 s, while the optimal energy consumption economy is

关 键 词：汽车工程 动力系统构型 拓扑设计方法 经济性 纯电动汽车 动力性 

分 类 号：U469.72[机械工程—车辆工程]