发电技术2026，Vol.47Issue(4)：793-806,14.DOI:10.12096/j.2096-4528.pgt.260411
基于复合相变材料的锂电池热管理系统数值模拟与温控性能研究
Numerical Simulation and Temperature Control Performance of Lithium Battery Thermal Management System Based on Composite Phase Change Material
摘要
Abstract
[Objectives]The performance of lithium batteries is highly sensitive to temperature changes.To address the heat generation during the charge and discharge process of energy storage batteries under extreme operating conditions,a thermal management system for batteries based on paraffin/expanded graphite composite phase change material(CPCM)is designed.[Methods]Based on Bernardi's heat generation theory,the user-defined function(UDF)source term of the battery numerical model is developed to investigate the effects of different discharge rates,CPCM arrangement types,densities,and thicknesses on the thermal management performance of the system.The temperature control performance of the system is further optimized by coupling it with an aluminum metal casing.[Results]Compared with low discharge rates,CPCM has a more significant effect on battery thermal management at high discharge rates.The anisotropy of the internal thermal conductivity of the battery and the contact area between the CPCM and the battery surface play key roles in heat transfer efficiency and temperature distribution.Appropriately increasing the density and thickness of the CPCM helps enhance the temperature control performance of the system.In addition,coupling the 1.6 mm-thick aluminum casing enhances the cooling performance while maintaining good battery pack efficiency.[Conclusions]The research findings can provide a reference for the design and optimization of thermal management systems for batteries in related energy storage applications.关键词
锂电池/复合相变材料(CPCM)/热管理/数值模拟/温控性能/高倍率放电Key words
lithium battery/composite phase change material(CPCM)/thermal management/numerical simulation/temperature control performance/high rate discharge分类
能源科技引用本文复制引用
屠楠,胡瑞河,方嘉宾,冯佳磊,刘家琛..基于复合相变材料的锂电池热管理系统数值模拟与温控性能研究[J].发电技术,2026,47(4):793-806,14.基金项目
国家自然科学基金项目(22378321) （22378321）
中国电力建设股份有限公司研究中心定向资助计划项目(DJ-PTZX-2021-03) （DJ-PTZX-2021-03）
陕西省重点研究计划项目(2022GXLH-01-08) （2022GXLH-01-08）
陕西省秦创原"科学家+工程师"队伍建设项目(2022KXJ-179). Project Supported by National Natural Science Foundation of China(22378321) （2022KXJ-179）
Research Center of China Power Construction Company Limited Directed Funding Program(DJ-PTZX-2021-03) （DJ-PTZX-2021-03）
Key Research Project of Shaanxi Province(2022GXLH-01-08) （2022GXLH-01-08）
Shaanxi Province Qin Chuang Yuan"Scientist&Engineer"Team Construction Project(2022KXJ-179). （2022KXJ-179）
