文献类型：期刊文献

英文题名：Optimization Approach of a PCM-Based Thermal Regulation for Lithium-Ion Batteries under High Discharge Rate and Ambient Temperatures: A Numerical Study

作者：Mombeki Pea, Hamir Johan An, Zhoujian Du, Xiaoze Zhang, Dong Fu, Jian Ding, Yong Elombo Motoula, Smael Magloire

第一作者：Mombeki Pea, Hamir Johan

通信作者：An, ZJ[1];An, ZJ[2];An, ZJ[3]

机构：[1]Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China;[2]Guizhou Inst Technol, Higher Educ Inst Guizhou Prov, Sch Aerosp Engn, Key Lab Aeroengine Thermal Management & Intelligen, Guiyang 550025, Peoples R China;[3]Shouhang High Tech Energy Technol Co Ltd, Jiuquan 735000, Peoples R China;[4]Marien NGouabi Univ, Natl Polytech Sch, Lab Mech Energy & Engn, BP 69, Brazzaville, Rep Congo

第一机构：Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China

通信机构：corresponding author), Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China;corresponding author), Guizhou Inst Technol, Higher Educ Inst Guizhou Prov, Sch Aerosp Engn, Key Lab Aeroengine Thermal Management & Intelligen, Guiyang 550025, Peoples R China;corresponding author), Shouhang High Tech Energy Technol Co Ltd, Jiuquan 735000, Peoples R China.|贵州理工学院;

年份：2026

卷号：152

期号：5

外文期刊名：JOURNAL OF ENERGY ENGINEERING

收录：;EI(收录号：20262721057583);Scopus(收录号：2-s2.0-105043854530);WOS:【SCI-EXPANDED(收录号:WOS:001850019000017)】；

基金：This work was financially supported by the National Natural Science Foundation of China (52206087; 52130607); Guizhou Provincial Major Scientific and Technological Program (XKBF(2025)031); Guizhou Science and Technology Innovation Leading Talent Workstation (KXJZ(2025)024); China Postdoctoral Science Foundation (2025M770576); Youth Doctor Foundation Project of Gansu Provincial Education Department (2025QB-027); Science and Technology Project of Gansu province (25CXGA058); Guizhou Provincial Basic Research Program (Natural Science) (MS[2025]189); Young Faculty Interdisciplinary Research Cultivation Program of Lanzhou University of Technology; and Incubation Program of Excellent Doctoral Dissertation-Lanzhou University of Technology.

语种：英文

外文关键词：Lithium-ion battery; Phase-change material; Thermal management system; High discharge rate; High ambient temperature

摘要：The performance and safety of lithium-ion batteries are highly influenced by the heat generated during operation. Excessive temperature rise can lead to thermal runaway, threatening the battery's structural integrity and service life. Therefore, an efficient thermal management system is vital to maintain safe and stable operation, especially under high discharge rates and elevated ambient temperatures. This computational study investigates a passive-based cooling approach that combines phase-change materials with metallic structural elements to improve heat dissipation and temperature uniformity. Three composite phase-change materials (CPCMs) were formulated: CPCM1 (paraffin, expanded graphite, high-density polyethylene, and epoxy resin); CPCM2 (octadecanoic acid, octadecanol, and expanded graphite); and CPCM3 (hydrated salt and modified expanded graphite). These materials were evaluated individually and in dual-layer configurations (CPCM1-3 and CPCM2-3) to exploit their complementary melting temperatures and heat storage capacities. The thermal danger threshold was defined at 333.15 K, beyond which cell degradation or safety risks may occur. The results showed that at an ambient temperature of 293.15 K, passive-based cooling maintained all battery cells below this critical temperature, though with limited temperature uniformity. As the ambient temperature increased to 303.15 and 313.15 K, the dual-layer configurations of the phase-change material (PCM) and metallic structure system demonstrated superior performance. Specifically, at 303.15 K, the CPCM1-3 configuration reduced the maximum cell temperature by 1.92%-3.22% and the temperature gradient by up to 86.38%, remaining well below the safety threshold. At 313.15 K, the CPCM2-3 configuration maintained temperatures within 1.2% of the thermal limit and achieved a low temperature difference of 2.87 K, thereby preserving strong thermal uniformity. These findings confirm that the use of layered composite PCMs with metallic structures provides an effective passive-based thermal regulation strategy, ensuring operational safety, enhancing heat distribution, and improving the overall thermal resilience of lithium-ion battery systems.