摘要
为了提高锂电池储能系统的使用寿命,提出了一种串联插电式混合动力客车能量控制策略,其在电量维持阶段,整车控制采用功率跟随的控制策略,并统计锂电池充放电Ah量变化,控制辅助动力单元功率输出大小,实现动力系统电量自平衡;根据车辆每天运行里程以及流经锂电池的Ah量,自动调节锂电池系统的充电电流到达限值,从而控制流经锂电池的能量,延长锂电池寿命,满足车辆全寿命周期充放电次数的目标。经评估,在制动工况极度频繁的条件下,虽然车辆油耗有一定程度的提高,但是其全寿命周期使用成本更低。
It presented an energy control strategy for plug-in series hybrid electric bus, in view of the limited battery cycle life. In the stage of charge-sustaining, the vehicle controller mainly adopts the power following strategy, combined with counting up the charge and discharge Ah of lithium battery, and controls the output power of APU system, then achieves self balancing of power system. According to the statistical data of daily mileage and the amount of Ah flowing through the lithium battery, the vehicle control strategy automatically adjusts the charging current limit to the lithium battery system, so as to control the energy flowing through the lithium battery, and achieves the purpose that lithium battery cycle times meet the vehicle life cycle. Although the fuel consumption of the vehicle increases with a certain extent under specific working conditions, however, the cost of the vehicle is lower during the life cycle.
出处
《控制与信息技术》
2018年第1期46-51,共6页
CONTROL AND INFORMATION TECHNOLOGY
关键词
串联插电式电动车
锂电池寿命
充放电Ah量
能量控制策略
电量保持
plug-in series hybrid electric bus
lithium battery cycle life
charge and discharge Ah
energy control strategy
charge- sustaining
