电源技术2026，Vol.50Issue(8)：1462-1468,7.DOI:10.3969/j.issn.1002-087X.2026.08.009
锂电池组电化学-热耦合特性及参数敏感性研究
Study on electrochemical-thermal coupling characteristics and parameter sensitivity of lithium-ion batterie pack
刘博文 1杨方 1傅允准 1杭恩1
作者信息
- 1. 上海工程技术大学 机械与汽车工程学院,上海 201620
- 折叠
摘要
Abstract
Based on the porous electrode theory and laws of heat transfer,a comprehensive model cou-pling a pseudo-two-dimensional(P2D)electrochemical model with a 3D thermal model was developed for the INR21700M50L lithium-ion battery.The model's accuracy in predicting terminal voltage and surface temperature rise was validated through multi-rate discharge experiments.Sensitivity analysis was systematically conducted to evaluate the effects of key parameters—including electrode particle ra-dii,electrical conductivities,and initial electrolyte concentration—on voltage characteristics and ther-mal behavior.The results indicate that the particle radii of both electrodes significantly influence volt-age polarization,and reducing particle size effectively elevates the voltage plateau.Thermally,the posi-tive electrode particle radius is the dominant driver of temperature rise,as larger sizes exacerbate diffu-sion limitations and irreversible heat generation,whereas solid-phase conductivity shows negligible im-pact.Analysis of variance(ANOVA)further confirms that the positive electrode particle radius contrib-utes 91.35％to temperature inhomogeneity,with a range of 1.783℃.Finally,an optimal parameter combination for thermal distribution was determined using the Taguchi orthogonal method,providing theoretical support for the electrode structure design of high-energy-density battery packs.关键词
电化学-热耦合模型/锂离子电池组/P2D模型/参数敏感性/田口法/正交实验/温度均匀性Key words
electrochemical-thermal coupled model/lithium-ion battery pack/P2D model/parameter sensitivity analysis/taguchi method/orthogonal experiment/temperature uniformity分类
信息技术与安全科学引用本文复制引用
刘博文,杨方,傅允准,杭恩..锂电池组电化学-热耦合特性及参数敏感性研究[J].电源技术,2026,50(8):1462-1468,7.
