两类锂离子电池电化学机理模型的数值分析  

Numerical Analysis of Electrochemical Mechanism Models for Two Types of Lithium-ion Batteries

作　　者：杜开承 欧阳旺林 洪保昌 DU Kaicheng;OUYANG Wanglin;HONG Baochang(School of Science,East China University of Technology,330013,Nanchang,PRC)

机构地区：[1]东华理工大学理学院,南昌330013

出　　处：《江西科学》2023年第4期634-642,共9页Jiangxi Science

基　　金：江西省教育厅教学改革项目(yjsjg1202007)。

摘　　要：在新能源锂离子电池领域,已有研究学者构造了若干种电池的电化学机理模型。为了分析相关物理化学过程,得到电池相关有效性质,基于DFN模型讨论电池的物理化学机制,使用了降阶简化后的单颗粒模型进行模拟研究。先采用不同的参数对单颗粒模型进行模拟,之后分析各个相关物理量,与DFN模型进行比较,得出精度控制良好一致性的范围,分析了模型预测的差异性。通过电池机理模型的研究,可获得电池的状态估计,这能够更好地认识电池。In the field of new energy lithium-ion batteries,several models of the electrochemical mechanism of batteries have been constructed by researchers.In order to analyze the relevant physicochemical processes and obtain the applicable operational properties of the battery,this paper discusses the physicochemical mechanism of the battery based on the DFN model,and uses a reduced-order simplified single-particle model for simulation studies.Different parameters are utilized to simulate the single-particle model first,and after that,each relevant physical quantity is analyzed and compared with the DFN model to derive the range of moral consistency in accuracy control and analyze the differences of the model.Through the study of the battery mechanism model,the state estimation of the battery can be achieved,which enables a better understanding of the battery.

关 键 词：锂离子电池 电化学机理模型 DFN模型 微分方程建模 数值分析 

分 类 号：TQ1321[化学工程—无机化工]