基于传质现象的锂电池机理建模  

Li-ion battery modeling based on mass transfer

作　　者：周苏[1,2] 孙晓燕[1] 纪光霁[1] 胡哲[3] 

机构地区：[1]同济大学汽车学院,上海201804 [2]同济大学中德学院,上海200092 [3]上海汽车集团股份有限公司新能源汽车事业部,上海201804

出　　处：《武汉科技大学学报》2011年第6期467-472,共6页Journal of Wuhan University of Science and Technology

基　　金：上海市重点学科建设资助项目(B303);同济大学中德学院AVL新型车辆动力系统基金教席资助项目

摘　　要：在比较分析各类蓄电池系统模型的基础上,提出一种基于传质现象的锂电池简化机理模型。采用COMSOL v3.5软件针对型号为IHR 18650的锰酸锂离子电池进行仿真研究,并通过放电实验对简化模型的有效性进行验证。结果表明,提出的简化模型能够较为准确地描述锂离子电池的外部特性。文中进一步对不同充/放电电流条件下的锂离子浓度和电势分布情况、设计参数对锂电池性能的影响以及锂离子浓度和电势分布随电池充/放过程的变化情况进行了仿真分析。Based on the investigation of various battery models available,a simplified model based on mass transfer for characterizing the performance of Li-ion battery IHR18650 in COMSOL v3.5 was proposed and validated through several predefined discharging experiments.The model-based simulation shows that the model can accurately describe the external features of the Li-ion battery.Based on this model,simulation analysis is carried out to study the distribution of Li-ion concentration,the potential under different charging/discharging current,the effect of design parameters on battery performance,and the variation of Li-ion concentration and potential distribution along with the change in charging/discharging current.

关 键 词：锂电池 建模 传质现象 系统仿真 放电实验 

分 类 号：TP15[自动化与计算机技术—控制理论与控制工程]