高温条件下动力电池热管理数值分析与实验研究  

Numerical Analysis and Experimental Research on Thermal Management of Power Batteries under High Temperature Conditions

作　　者：苏建彬 王晨旭 刘常勇 SU Jianbin;WANG Chenxu;LIU Changyong(Department of Traffic Engineering,Fuzhou Polytechnic,Fuzhou Fujian 350108,China;Automotive College,Tongji University,Shanghai 201804,China;School of Architectural Engineering,Quanzhou Engineering Vocational and Technical College,Quanzhou Fujian 362300,China)

机构地区：[1]福州职业技术学院交通工程学院,福建福州350108 [2]同济大学汽车学院,上海201804 [3]泉州工程职业技术学院,福建泉州362300

出　　处：《萍乡学院学报》2024年第6期39-44,共6页Journal of Pingxiang University

基　　金：福州职业技术学院自然科学类科研项目“基于COMSOL的动力电池热管理系统研究”(FZYKJJJQN202204)。

摘　　要：针对高温工况,课题组以由4个圆柱形18650动力电池组成的电池组为研究对象,探讨不同冷却方式对动力电池热管理性能的影响,为动力电池热管理系统的设计与优化提供参考。结合模型仿真与实验研究的方法,对热管理系统性能进行全面分析与验证。在环境温度40℃、4 C电流循环充放电实验(单周期为600 s,总时间为1200 s)的条件下,比较多种冷却方案,结果表明:采用完全包裹相变材料的冷却方式温控效果最佳,电池组最高温度为46℃,最大温差仅为2℃。将仿真结果与实验结果对比最大误差为5.4%,说明仿真模型具有较高的可靠性。For high-temperature working conditions,the research group takes a battery pack consisting of four cylindrical 18650 power batteries as the research object,explores the influence of different cooling methods on the thermal management performance of power batteries,and provides reference for the design and optimization of power battery thermal management systems.Using a combination of model simulation and experimental research methods,conduct a comprehensive analysis and verification of the performance of the thermal management system.Under the conditions of an ambient temperature of 40℃and a 4 C current cycling charge and discharge experiment(with a single cycle of 600 s and a total time of 1200 s),multiple cooling schemes were compared.The results showed that the cooling method that completely wrapped the phase change material had the best temperature control effect,with the highest temperature of the battery pack being 46℃and the maximum temperature difference being only 2℃.The maximum error between the simulation results and the experimental results is 5.4%,indicating that the simulation model has high reliability.

关 键 词：动力电池 电池热管理 数值分析 温度均匀性 相变材料冷却 

分 类 号：U469.7[机械工程—车辆工程]