增程式电动汽车动力系统参数匹配建模仿真分析

Modeling and Simulation Analysis of Parameter Matching in the Power System of Extended Range Electric Vehicles

增程式电动汽车是以纯电能驱动的车辆,通过动力蓄电池和一个小型的增程器(Auxiliary Power Unit)为车辆提供电能,在增加了车辆续航里程的同时,工况适应性也随之提高,被评为目前具有较高研发前景的新能源汽车[1]。本文以城市SUV车型的增程式电动汽车为需求目标进行研究。根据整车参数及制定的控制策略,基于AVL Cruise软件为平台建立性能仿真模型;建立Simulink控制策略模型;分别在短途行驶模式和长途行驶模式下选定符合相应模式的行驶工况进行联合仿真分析。结果表明,整车动力性及续航里程均能达到初始的设计目标,为增程式电动汽车的技术拓展和多样的控制策略提供可行性方案。

R-EEV is a vehicle driven by pure electric energy.It provides electric energy for the vehicle through the power battery and a small auxiliary power unit.While increasing the vehicle range,the adaptability of working conditions is also improved.It is rated as a new energy vehicle with high development prospects.This paper takes the R-EEV of urban SUV as the demand target.the control strategy is designed according to the design requirements;and the AVL Cruise software establishes the performance simulation model for the platform;establishes the Simulink control strategy model;selects the driving conditions corresponding to the corresponding modes for cosimulation analysis under the short-distance driving mode and the long-distance driving mode.The results show that the vehicle dynamic performance and range can reach the initial design goals,which provides a feasible scheme for the technical development and various control strategies of R-EEV.