基于二阶阻容模型的锂离子动力电池工作特性的建模及仿真分析

Simulation and Analysis of Model and Performance Characteristics for Iithium Power Battery Based on RC Model

分析比较了几种常见的电池电化学模型和等效电路模型,建立了以电池电动势、电池内阻、电池容量为决策变量的二阶电阻电容等效电路模型,推导出了其状态空间模型.在matlab/simulink平台上搭建模型各个模块,最后对电池电流、电压及SOC进行了仿真分析,结果表明该模型方案设计合理可行.

This article discusses the model of the li-ion battery, The electrochemical models and equivalent circuit models. The second-order RC network equivalent circuit model with battery electromotive, battery internal resistance and battery capacity as the decision variables for lithium ion battery on electric vehicle is established and the state-space model is deduced. The battery current, voltage and power of the model based on matlab/simulink are simulted and analyzed, the results prove that the model is reasonable and feasible.