基于电动汽车电池包散热性能提升的风-液混合冷却热管理系统研究  

Investigation on air-liquid hybrid cooling thermal management system for heat dissipation performance improvement of electric vehicle battery pack

作　　者：王宁波 郭焱华 田博 董梓骏 邵双全 Wang Ningbo;Guo Yanhua;Tian Bo;Dong Zijun;Shao Shuangquan(School of Energy and Power Engineering,Huazhong University of Science and Technology)

机构地区：[1]华中科技大学能源与动力工程学院

出　　处：《制冷与空调》2025年第2期92-98,共7页Refrigeration and Air-Conditioning

基　　金：国家自然科学基金(52076085);华中科技大学学术前沿青年团队资助(2019QYTD10);中央高校基本科研业务费资助HUST(2024JYCXJJ046)。

摘　　要：基于电动汽车用18650圆柱形锂离子电池,提出一种新型的风-液混合冷却电池热管理系统解决电池模组温度不均匀的问题。利用电池产热模型结合CFD仿真建立电池热管理系统三维流固耦合热分析模型,并进行边界条件设置和网格无关性检验。结果表明:风-液混合冷却电池热管理系统的温度均匀性优于单独的风冷或液冷系统,且电池模组的最高温度更低;当进水流速从0.01 m/s增加到0.10 m/s时,电池模组的最高温度降低1.87 K,当进口空气速度从0.10 m/s增加到3.00 m/s时,电池模组的最高温度仅降低1.96 K,这说明在优化电池热管理系统散热性能时应优先考虑进水流速的设计。Based on 18650 cylindrical lithium-ion batteries for electric vehicle,a novel air-liquid hybrid cooling battery thermal management system is proposed to solve the problem of uneven temperature of the battery module.A three-dimensional fluid-solid cou pling thermal analysis model of the battery thermal management system is established by using the battery heat production model combined with CFD simulation,and the boundary conditions are set and the mesh-independence is checked.The results show that the tem perature uniformity of the air-liquid hybrid cooling battery thermal management system is better than that of the separate air-cooled or liquid-cooled system,and the maximum tem perature of the battery module is lower.When the inlet water flow rate increases from 0.01 m/s to 0.10 m/s,the maximum temperature of the battery module decreases by 1.87 K;when the inlet air flow rate increases from 0.10 m/s to 3.00 m/s,the maximum temperature of the battery module decreases by 1.96 K,which indicates that the design of the inlet water flow rate should be given priority when optimizing the dissipation perform ance of the battery thermal management system.

关 键 词：电池热管理系统 散热性能 风-液混合冷却 数值模拟 

分 类 号：TB657.2[一般工业技术—制冷工程] U469.72[机械工程—车辆工程]