锂离子电池数值模型与经验模型研究

Numerical and Empirical Model Research of the Lithium-ion Battery

设计锂离子电池及优化其参数,确定荷电状态工作区间,以提高其使用寿命。需要精确的电池模型作为理论和实证研究的基础,电池模型分为数值和经验两大类别,分别从电池内部电化学反应和电池充、放电测试数据来建立起锂离子电池模型。分析对比两类模型精确度与适用性,通过两者与实验测试数据的仿真对比,发现以电化学出发的模型精度高于经验模型。

In order to improve the cycle life of lithium-ion battery, it＇s necessary to confirm the workspace of stage of charge and optimize its parameters. A validated battery model was needed for the basis of theory and empirical study. Battery models are divided into numerical models and empirical model The numerical models were built from inside electrochemical reaction while the empirical ones were built via the test data of charge and discharge. Two simulation models were analyzed in terms of the accuracy and applicability. The numerical model would yield a batter accuracy comparable to the empirical model.