电动汽车滑行工况能量回收策略探究

滑行工况能量回收策略可以减少由于驾驶员制动延迟时间所造成的能量损失,但同时也会造成车辆滑行,尤其高速滑行时的能量损失.针对这一问题,以改装后的北汽EV160纯电动车辆为研究对象,在NEDC工况和FTP75市郊工况基础上,插入了相应的滑行与制动延迟情景,并运用Matlab/Simulink对此进行了建模仿真.最后,进行了实车试验验证,探究了电动汽车在不同滑行能量回收策略下的能耗,并与无滑行能量回收时的能耗进行了对比.结果表明:电动汽车带有滑行工况能量回收时的能耗比无滑行能量回收时更高,且能量回收能力越强,能耗越高.结果对于整车控制策略中滑行能量回收策略的采用具有重要指导意义.

Research on Energy Recovery Strategy of Electric Vehicles Under Sliding Condition

The energy recovery strategy of the sliding condition can reduce the energy loss caused by the braking delay time,but it also causes the energy loss when the vehicle is under sliding condition,especially in high-speed sliding condition.The sliding and braking delay scenarios were inserted in the NEDC working condition and the FTP75 suburban working condition by taking a modified BAIC EV160 pure electric vehicle as the research object.The simulation by Matlab/Simulink and finally the experiment were carried out.The energy consumption with different energy recovery strategies in the sliding condition was compared with that without the energy recovery in the sliding condition.The results show that the energy consumption of electric vehicles with energy recovery in the sliding condition is higher than that without the energy recovery in the sliding condition,and the stronger the energy recovery capability,the higher the energy consumption.The results have important significance for the adoption of the sliding energy recovery strategy in the vehicle control strategy.