化工进展2024，Vol.43Issue(8)：4333-4341,9.DOI:10.16085/j.issn.1000-6613.2023-1185
低温条件下基于相变材料的锂离子电池保温特性分析
Analysis of thermal insulation characteristics of lithium-ion batteries based on phase change materials under low temperature
摘要
Abstract
The low temperature condition can greatly limit the capacity and output power of lithium-ion batteries.In order to maintain the batteries in the suitable temperature range under low-temperature conditions,the GPU-accelerated multi-relaxation time lattice Boltzmann method(MRT-LBM)was adopted to investigate the effect of phase change temperatures of PCM on the battery during five charge-discharge cycles at ambient temperatures of-20℃,-10℃and 0℃.The results showed that when the ambient temperature was 0℃,the PCM with phase change temperature in the range of 26-30℃could enable the battery to operate in the optimal temperature range of 20-45℃after the second cycle,and the temperature difference of the battery was less than 4.6℃.When the ambient temperature was-10℃,the battery reached 0℃after 30 minutes with a PCM in the phase change temperature range of 22-28℃,and the temperature difference between the batteries was less than 4.3℃throughout the process.In addition,after three charge-discharge cycles,the average battery temperature was in the range of 20.0-28.9℃,and the fluctuation of the highest temperature under the same phase change temperature was less than 1.0℃.When the ambient temperature was-20℃,the battery pack could reach 0℃after 140 minutes only by PCM insulation,and thus it was necessary to combine with other preheating systems to make the battery reach the appropriate operating temperature within a short period of time.关键词
相变材料/锂离子电池/低温环境/保温/数值模拟Key words
phase change material/lithium ion battery/low-temperature environment/thermal insulation/numerical simulation分类
通用工业技术引用本文复制引用
潘涵婷,徐洪涛,许多,罗祝清..低温条件下基于相变材料的锂离子电池保温特性分析[J].化工进展,2024,43(8):4333-4341,9.基金项目
上海市自然科学基金面上项目(20ZR1438700). （20ZR1438700）
