纯电动乘用车关键系统设计研究及分析验证

本文主要针对某纯电动乘用车进行关键系统选型及匹配分析,首先基于整车性能目标及整车性能参数,确定其动力驱动方式及制动能量回收策略和方案。其次为了更好提升整车能量管理水平,改善能耗,提升续航里程,本文研究的纯电动汽车制动系统采用电液助力系统(IBS)。IBS系统能够有效进行能量计算,确定液压系统是否介入工作,在满足制动需求的同时,改善整车能耗,提升续航里程。最后,在关键系统选型及设计分析上,利用MATLAB仿真软件进行性能初选及设计,结合AMEsim分析软件对选型结果进行加速性能及中国工况续驶里程数据校核,通过仿真与整车试验验证整车性能满足设计指标。

Research and Analysis Verification of Key System of EV Passenger Vehicle

This paper focuses on the key system selection and matching analysis of a pure electric passenger car.Firstly,based on the vehicle performance objectives and vehicle performance parameters,the power driving mode and braking energy recovery strategy and scheme are determined.In order to improve the energy management level of the vehicle,improve the energy consumption,the braking system of pure electric vehicle studied in this paper adopts the electro-hydraulic power system(IBS).IBS system can effectively calculate the energy,determine whether the hydraulic system is involved in the work,and improve the vehicle energy consumption and range while meeting the braking demand.In the key system selection and design analysis,using MATLAB simulation software for performance selection and design,combined with AMEsim simulation analysis software,the acceleration performance and driving range data under CLTC are checked.Finally,the vehicle performance meets the design index through simulation and vehicle test.