热管耦合相变材料全气候锂离子电池热管理系统性能分析
Thermal Performance Analysis of Novel All-Climate Lithium-Ion Battery Thermal Management System Coupled with Heat Pipes and Phase Change Materials
熊慧敏 1彭跃中 1何励学 1胡章茂 1王唯 1田红1
作者信息
- 1. 长沙理工大学能源与动力工程学院,湖南长沙 410114
- 折叠
摘要
电池热管理系统(BTMS)是保障储能电池在不同工况下安全高效运行的重要方法.基于相变材料高潜热与热管高导热特性,设计了一种热管耦合相变材料的新型锂离子BTMS,该系统可实现全气候条件下电池保温与散热一体化.采用数值模拟对BTMS的保温与散热性能进行研究.在低温环境下,通过模拟电池放电过程和放电结束后电池温降过程,分析了保温层厚度和初始温度对保温性能的影响;在常温和高温环境下,基于相变材料、热管、双层冷却通道耦合手段提出了相应的散热方案,有效保障了锂离子电池在放电倍率 0.5C～2.0C下的安全稳定运行.设计的BTMS可实现不同环境温度下的保温或散热需求,为实现全气候锂离子电池热管理技术提供理论参考.
Abstract
The battery thermal management system is an essential approach to ensuring the safe and efficient operation of energy storage batteries under different operating conditions.Considering the high latent heat of phase change materials and the superior thermal conductivity of heat pipes,this paper designs a novel lithium-ion battery thermal management system for lithium-ion batteries coupled with heat pipes and phase change materials coupling that can realize the requirements of heat removal and heat preservation under all-climate conditions.The thermal performance of such a battery thermal management system is numerically investigated.Under low-temperature environments,the paper analyzes the influences of insulation material thickness and initial battery temperature on the duration of heat preservation by simulating the battery discharge process and the temperature drop after discharge.In contrast,at normal and high ambient temperatures,it proposes heat removal strategies based on single or coupled measures of phase change materials,heat pipes,and gas/liquid cooling channels for the safe operation of lithium-ion batteries,especially at 0.5C to 2.0C discharge rates.The current work could provide theoretical guidance for the efficient design of a lithium-ion battery thermal management system covering the whole climatic range.
关键词
锂离子电池/热管理/全气候/相变材料/热管Key words
lithium-ion battery/thermal management/all-climate/phase change material/heat pipe引用本文复制引用
基金项目
国家自然科学基金(52306069)
湖南省自然科学基金(2023JJ40044)
湖南省教育厅科学研究重点项目(23A0263)
出版年
2024
国家科技期刊平台
NSTL
万方数据