基于恒功率及功率跟随控制的增程式电动汽车研究  

Research on Extended-range Electric Vehicle Based on Constant Power and Power Following Control

作　　者：田丽媛[1] 孙光达 王志豪 柳敬伟 TIAN Liyuan;SUN Guangda;WANG Zhihao;LIU Jingwei(School of Mechatronic Engineering,Changchun University of Technology,Changchun Jilin 130012,China)

机构地区：[1]长春工业大学机电工程学院,吉林长春130012

出　　处：《汽车零部件》2022年第10期21-26,共6页Automobile Parts

摘　　要：为了解决增程式电动汽车动力电池循环次数增加使电池寿命缩短的问题,首先对三元锂电池的寿命衰减机制进行了研究,提出以恒功率控制策略及功率跟随控制策略为核心进行建模和仿真;其次在电池模块中设置不同的起始SOC,分别对电池电功率和循环次数进行了分析,验证了选择控制策略的重要性和能量流动的合理性;最后对电池循环寿命进行了数据分析。结果表明:功率跟随控制策略明显减弱了充放电强度,减少了电池功率损失和循环次数,有效延长了电池的使用寿命。In order to solve the problem of shortening battery life caused by increasing the number of power battery cycles of extended-range electric vehicle.Firstly, the life decay mechanism of ternary lithium battery was studied, and the constant power control strategy and power following control strategy were proposed as the core for modeling and simulation.Secondly, different starting SOC were set in the battery module, and the battery power and cycle times were analyzed respectively to verify the importance of selecting control strategy and the rationality of energy flow.Finally, the data of battery cycle life was analyzed.The results show that the power follow control strategy can obviously reduce the charge and discharge intensity, reduce the power loss and cycle times of the battery and effectively prolong the service life of the battery.

关 键 词：增程式电动汽车 恒功率 功率跟随控制 电池 循环寿命 

分 类 号：U462.3[机械工程—车辆工程]