小型无人机锂电池组的Thevenin模型参数辨识研究

Study on Parameter Identification of Thevenin Model for Small Unmanned Aerial Vehicle Lithium Battery Pack

对锂电池组建模并对模型参数识别对管理小型无人机锂电池组相关研究有重要意义。本文以串联7节4Ah航空锂电池组为研究对象,通过设计混合脉冲功率特性测试(Hybrid Pulse Power Characteristic,HPPC)来对电池组Thevenin模型参数进行辨识。研究了小型无人机锂电池组Thevenin模型参数识别方法及各参数与锂电池SOC的关系曲线。结果表明:按照本实验的方法,可以对电池组Thevenin模型的参数进行辨识,能够确定各参数与荷电状态(State of Charge,SOC的关系。

Different The modeling of lithium battery group and the identification of model parameters are of great significance to the research of management of the small UAV lithium battery group. In this paper, a series of 7 4Ah aviation lithium battery pack is selected as the research object, and the Thevenin model parameters of the battery pack are identified by designing the Hybrid PulsePower Characteristic （HPPC）. The results show that the parameters of the battery Thevenin model can be identified according to the experimental method, and the relationship between the parameters and the State of Charge （SOC） can be determined.