A delayed cooling system coupling composite phase change material and nano phase change material emulsion

被引：61
作者：
Cao, Jiahao [1 ,2 ]
Feng, Jinxin [1 ,2 ]
Fang, Xiaoming [1 ,2 ,3 ]
Ling, Ziye [1 ,2 ,3 ]
Zhang, Zhengguo [1 ,2 ,3 ]
机构：
[1] South China Univ Technol, Sch Chem & Chem Engn, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Peoples R China
[2] South China Univ Technol, Zhuhai Inst Modern Ind Innovat, Zhuhai 519000, Peoples R China
[3] South China Univ Technol, Guangdong Engn Technol Res Ctr Efficient Heat Sto, Guangzhou 510640, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2021年 / 191卷
基金：
国家重点研发计划;
关键词：
Hybrid battery thermal management; Lithium-ion batteries; Composite phase change material; Nano phase change material emulsion; Delayed cooling system; LITHIUM-ION BATTERY; THERMAL MANAGEMENT-SYSTEM; HEAT-TRANSFER; MODULE; OPTIMIZATION;
D O I：
10.1016/j.applthermaleng.2021.116888
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
To improve the working performance of lithium-ion batteries under long-term charge-discharge cycles, a delayed cooling system coupling composite phase change material (CPCM) and nano phase change material emulsion (NPCME) is proposed and numerically studied. In this study, optimisation of the dissipate structure was first conducted to obtain the optimal design. Subsequently, the cooling performance of a hybrid battery thermal management system (BTMS) coupling the CPCM and NPCME was comprehensively investigated. The effects of operating conditions such as inlet temperature, CPCM melting point, and NPCME melting point on the cooling performance were separately studied, and the optimal operating conditions were obtained. Finally, the thermal behaviour of the delayed cooling system was studied both in a single charge/discharge operation and continuous charge/discharge cycles. Simulation results indicated that the NPCME/CPCM system offers better cooling performance than the conventional Water/CPCM system, and the NPCME/CPCM cooling system can restrain the target.Tmax at lower flow rates than Water/CPCM cooling. Compared with the existing hybrid cooling system, power consumption can be significantly reduced without sacrificing the cooling performance. The temperature and temperature difference of the battery pack were below 48 degrees C and 4 degrees C in three charge-discharge cycles, respectively, with a CPCM utilisation of 90 vol% and a working time of liquid cooling less than one-quarter of the cycle process.
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页数：14
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