摘要
针对电动汽车锂电池的荷电状态不能被直接测量的现状,以容量为12 A h的高功率锂电池为研究对象,为该对象建立了等效电路模型,并对电池的模型参数进行辨识,辨识的电池模型参数能够较好地模拟电池的动静态特性。最后对所建立的模型设计状态观测器来估算电池的SOC,仿真结果及分析表明,所设计的控制策略能够较好的估算电池的荷电状态,为算法在实车上进行测试提供了理论依据。
For SOC of Lithium battery in electric car can not be directly measured, the capacity of 12 Ah high power lithium battery was as the research object in the paper, the equivalent circuit model of the battery is established, and the parameters of battery model were identified, the parameters of battery model can be well simulated the dynamic and static characteristics of the battery. Finally, the proposed model state observer is designed to estimate the SOC of the battery, the simulation results and analysis show that the designed control strategy can be better estimated the battery charged state, which provides a theoretical basis that the algorithm is tested on the real car.
出处
《电动工具》
2015年第3期16-21,共6页
Electric Tool
