制冷学报2026，Vol.47Issue(3)：67-74,8.DOI:10.12465/issn.0253-4339.20250316001
双相变温度梯度宽温域锂电池热管理实验研究
Experimental Study of Dual-PCM Gradient Thermal Management for Lithium-Ion Batteries with Wide Temperature Ranges
摘要
Abstract
In this study,a new method for passive thermal management of lithium-ion batteries based on paraffin/expanded graphite/bamboo charcoal composite bilayer phase-change materials is proposed.To solve the problem of the limited temperature-control range of existing phase-change materials,a dual phase-change temperature(30℃/50℃)gradient structure is constructed,and a composite phase-change system with dual phase-change temperature regulation is developed by combining the high thermal conductivity of expanded graphite with the porous adsorption properties of bamboo charcoal.Based on these results,at 40℃ambient temperature and under 5 C large multiplication rate,the temperature increase of the battery constructed using the double-layer phase-change material was 37.8％lower than that of the non-phase-change material group(43.3℃vs.69.6℃,respectively);at low ambient temperatures(-10℃and 0℃),the double-layer phase-change material extended the battery's effective working temperature range through the synergistic effects of the latent heat release of the phase change materials and the heat storage in the pores.The composite phase-change system realized intelligent thermal management across a broad temperature spectrum(-10-40℃)via the dual-phase-change mechanism,providing an innovative solution for the thermal safety regulation of batteries,which has significant engineering application value.关键词
双相变材料/电池热管理/石蜡/膨胀石墨/竹炭/宽温域调控Key words
dual-layer phase change material/battery thermal management/paraffin/expanded graphite/bamboo charcoal/broad-spectrum temperature regulation分类
通用工业技术引用本文复制引用
王铁营,刘松松,苏远翔,刘圣春,石千磊,徐超,廖子轩..双相变温度梯度宽温域锂电池热管理实验研究[J].制冷学报,2026,47(3):67-74,8.基金项目
国家自然科学基金(52206274,52476085)和国家重点研发计划(2022YFE0207600)资助项目.(The project was supported by the National Natural Science Foundation of China(No.52206274&No.52476085)and the National Key Research and Development Program of China(No.2022YFE0207600).)本文受天津市自然科学基金项目(23JCZDJC00250)资助.(The project was supported by the Natural Science Foundation of Tianjin Municipality(No.23JCZDJC00250).) （52206274,52476085）
