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材料工程  2017, Vol. 45 Issue (7): 41-47    DOI: 10.11868/j.issn.1001-4381.2016.000919
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
膨胀石墨/石蜡复合材料的制备及热管理性能
姜贵文, 黄菊花
南昌大学 机电工程学院, 南昌 330031
Preparation and Thermal Management of Expanded Graphite/Paraffin Composite for Li-ion Battery
JIANG Gui-wen, HUANG Ju-hua
School of Mechanical and Electrical Engineering, Nanchang University, Nanchang 330031, China
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摘要 石蜡作为相变材料(PCM),膨胀石墨(EG)为导热增强剂,制备不同EG含量的膨胀石墨/石蜡(EG/PCM)复合材料。采用瞬态热线法测量样品的导热系数;把EG/PCM应用于锂离子电池热管理,研究不同EG含量的EG/PCM热管理性能;采用ANSYS软件分析EG/PCM的导热系数对锂离子电池热管理的影响。结果表明:EG的加入大幅度提高了PCM的导热系数,EG含量≥9%时,EG/PCM的导热系数呈各向异性;锂离子电池表面温度随EG含量增加而减小,EG(12)/PCM(88)表现出优异的热管理性能;适当地提高EG/PCM的径向导热系数,有利于提高它的热管理性能。
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姜贵文
黄菊花
关键词 PCMEG导热系数热管理锂离子电池    
Abstract:A series of expanded graphite (EG)/paraffin composites with various EG contents were prepared for Li-ion battery thermal management, in which paraffin was chosen as PCM and EG as the promoter of thermal conductivity. The thermal conductivity of the samples was measured by a thermal conductivity analyzer based on the transient hot wire method.The effect of EG content in composite on Li-ion battery thermal management was investigated. The thermal management performance of EG/PCM composites with different thermal conductivity was also discussed by software ANSYS. The results show that:EG incorporation dramatically enhances the thermal conductivity of PCM;the thermal conductivity of EG/PCM shows anisotropy, with EG content equaling to or exceeding 9%; The temperature of Li-ion battery surface decreases with an increase in EG content of composite, EG(12)/PCM(88) exhibits excellent thermal management for Li-ion battery.To adequately increase the thermal conductivity of EG/PCM in radial direction is beneficial to improve Li-ion battery thermal management.
Key wordsphase change material    expanded graphite    thermal conductivity    thermal management    Li-ion battery
收稿日期: 2016-07-30      出版日期: 2017-07-21
中图分类号:  TK02  
通讯作者: 姜贵文(1978-),男,博士,研究方向:复合相变材料及电池热管理研究,联系地址:江西省南昌市南昌大学前湖校区机电工程学院(330031),E-mail:jgw_cailiao@163.com     E-mail: jgw_cailiao@163.com
引用本文:   
姜贵文, 黄菊花. 膨胀石墨/石蜡复合材料的制备及热管理性能[J]. 材料工程, 2017, 45(7): 41-47.
JIANG Gui-wen, HUANG Ju-hua. Preparation and Thermal Management of Expanded Graphite/Paraffin Composite for Li-ion Battery. Journal of Materials Engineering, 2017, 45(7): 41-47.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.000919      或      http://jme.biam.ac.cn/CN/Y2017/V45/I7/41
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