【作者】 王从兴；

【导师】 张京明；

【作者基本信息】 哈尔滨工业大学 ， 车辆工程， 2008， 硕士

【摘要】 混合动力汽车(HEV)是传统内燃机汽车到电动汽车的过渡产品,它不仅具有传统内燃机汽车优良的动力性和较长的续驶里程,还具有纯电动汽车高效率、低排放的性能,因此混合动力汽车得到了各个汽车生产厂家和科研单位的青睐。制动能量回收系统是混动力汽车的重要组成部分,它对汽车的燃油经济性、排放性和行驶安全性有着直接的影响。它能在汽车减速和制动过程中,在保证汽车的制动性能的前提下实现制动能量的回收。文章在充分研究了常见并联混合动力汽车传动系统的基础上,重新选择发动机、电动机和电池的型号,并根据动力性要求初步确定发动机、电动机和电池的各个参数,并选择矩形分割法对发动机、电动机和电池的功率进行优化匹配。基于Matlab/Simulink以及ADVISOR软件以夏利N3三厢1.3为基础建立了发动机、电动机和蓄电池的仿真模型,并加入了并行控制策略。本文首先对汽车的动力性和燃油经济性进行了对比分析;其次在典型制动工况下仿真,得到汽车在不同的制动初速度和制动强度下的制动性能和能量回收率;然后在不同循环工况进行仿真,分析不同循环工况对制动能量回收率的影响;最后根据混合度的概念和目前混合动力汽车混合度的研究现状,分析混合度对整车动力性、经济性和能量回收率的影响。结果表明在低制动强度下回收的能量多,在频繁加减速的城市工况下回收的能量比较多,混合度的最佳范围为0.3~0.4。本文所研究的内容对以后制动能量回收系统的硬件设计具有重要的意义,为以后夏利汽车的混合动力改造奠定了基础。更多还原

【Abstract】 Hybrid electric vehicle (HEV) is the transition product of traditional vehicle to electric vehicle, which combines the excellent power, distance performance of conventional vehicle and low mission, high efficiency of electric vehicle, so HEV is favored by many vehicle manufactures and research institutions in recent years. Regenerative braking is one of key techniques for HEV, which has a direct impact on fuel economy, emission and vehicle security. When HEV is braking, regenerative braking system will make sure the braking security and recovers the kinetic energy.After deeply researched the power train of parallel hybrid electric vehicle, the engine, motor and battery are reselected,their parameters are set under the power requirement, and the power is matched with DRIECT. With Matlab/Simulink and ADVISOR, engine, motor and battery model are built based on Xiali N3 1.3L. The parallel brake control strategy are added.First the comparative analysis is made for vehicle’s power and economic. Second the power train model are simulated on the classic braking drive cycle, and the performance and energy reclaim rate are analyzed under the different speed and braking force. Third the power train model are simulated on different periodic drive cycles, and the drive cycles’effects to energy reclaim are analyzed. At last based on the concept of hybridization rate and the current status quo of HEV hybridization rate, the effect of the difference of hybridization rate to the vehicle’s power, economic and energy recovery are analyzed. The results show that speed low braking force reclaimed more energy, frequently decelerate and braking reclaimed more energy, and the best range of hybridization rate is from 0.3 to 0.4.The research result is useful for designing regenerative braking system hardware and also for designing Xiali hybrid electric vehicle.更多还原