重庆大学学报2024，Vol.47Issue(11)：51-64,14.DOI:10.11835/j.issn.1000-582X.2023.110
考虑集肤效应和高频额外产热的锂离子电池等效电化学阻抗热耦合模型
Equivalent electrochemical impedance-thermal coupling model for lithium-ion batteries considering skin effect and high-frequency additional heat
摘要
Abstract
Developing an accurate equivalent electrochemical impedance-thermal coupling model is crucial for calculating impedance and estimating temperature during low-temperature heating of batteries using high-frequency alternating current(AC).The NSGA-II algorithm was used to identify parameters for seven equivalent impedance models across a frequency range of 10 Hz to 100 000 Hz.The study found that a model using a resistor and inductor parallel module better accounts for the skin effect at high frequencies without increasing computational complexity compared to a single inductor module.The proposed model,which incorporates time-varying heat transfer coefficients and high-frequency additional heat,was validated under both constant-frequency and variable-frequency conditions.It reduced the maximum temperature prediction error from 2.93 ℃ to 0.35℃,with an RMSE of only 0.23℃ compared with existing models,proving its practicality and accuracy.关键词
锂离子电池/电化学阻抗/高频电流/温度预测Key words
lithium-ion batteries/electrochemical impedance/high-frequency current/temperature prediction分类
信息技术与安全科学引用本文复制引用
唐国峰,朱广曜,胡明辉,胡嘉敏,金国庆..考虑集肤效应和高频额外产热的锂离子电池等效电化学阻抗热耦合模型[J].重庆大学学报,2024,47(11):51-64,14.基金项目
国家自然科学基金资助项目(52072053). Supported by National Natural Science Foundation of China(52072053). （52072053）
