基于多模式切换的插电式混合动力电动汽车能量优化管理方法

摘要

插电式混合动力汽车中电动机和发动机的能量优化控制方法在提高车辆续航里程及驾驶性能方面有重要影响,本文结合传统的差值补充策略、负载跟随策略、持续最优策略3种控制策略提出一种基于多模式切换的能量优化管理方法,设计了5种工作模式在不同电池SOC下的模式转移方法和功率分配方法,旨在使汽车在满足驱动需求的前提下针对不同的行驶状态都能够降低能量消耗.结合某PHEV车型整车仿真模型对提出的能量优化管理方法进行离线仿真,并将离线仿真结果与传统能量控制方法的仿真结果进行对比,结果表明基于多模式切换的能量优化管理方法提高了汽车燃油经济性和汽车续航里程.%The driving strategy and energy optimization control method of the engine and motor of plug-in hybrid electric vehicle have great influence on improving the overall performance of the vehicle.This paper proposed an energy optimization management method based on multi-mode switching by combining three kinds of traditional control strategies including the difference supplement strategy,the load following strategy and the continuous optimal strategy.We designed five modes of operation under different battery SOC mode transfer method and torque distribution method to meet the needs of the drive under the premise of different driving conditions to reduce the energy consumption.The simulation results of the energy optimization method are compared with the simulation results of the traditional energy control method.The results show that the energy optimization management method based on multi-mode switching improves the fuel consumption of the vehicle Economy and car mileage.