Thermo-mechanical behaviors of the expanded graphite-phase change material matrix used for thermal management of Li-ion battery packs
Thermo-mechanical behaviors of the expanded graphite-phase change material matrix used for thermal management of Li-ion battery packs
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DOI：
10.1016/j.jmatprotec.2009.07.011
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发表时间：
2010
影响因子：
6.3
通讯作者：
Abdalla Alrashdan;Ahmad T. Mayyas;S. Al-Hallaj
中科院分区：
文献类型：
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作者：
Abdalla Alrashdan;Ahmad T. Mayyas;S. Al-Hallaj
本文制备了用于锂离子电池热管理的块体。这些块由石蜡和石墨薄片制成，石蜡用作相变材料（PCM）。该工艺首先将膨胀石墨压实成所需的模块形状，然后将其浸渍到熔融石蜡中。将模块化部件组装在一起，然后进行精加工操作以实现所需的包装几何形状。研究了制备的相变材料-膨胀石墨（PCM/EG）复合材料的热机械性能。测试包括导热性、拉伸压缩和爆破测试。结果表明，随着石蜡质量分数的增加，复合材料的导热系数、拉伸强度、压缩强度和爆裂强度均有所提高。相反，当在相对高的操作温度下测试时，结果显示相反的行为。
In this paper, blocks for the thermal management of Li-ion battery are prepared. The blocks are made of paraffin wax, which is used as a phase change material (PCM), and graphite flakes. The process starts by compacting expanded graphite into the desired modular shapes and then impregnating it into molten paraffin wax. The modular pieces were assembled together, followed by finishing operations to achieve a desired packaging geometry. Thermo-mechanical properties of the produced phase change material–expanded graphite (PCM/EG) composites have been studied. The tests include thermal conductivity, tensile compression and bursting test. The results showed that as mass fraction of paraffin wax increases in the composite material, the thermal conductivity, tensile strength, compression strength, and burst strength were improved while tested at low operating temperatures. In contrast, the results showed reverse behaviors when tested at relatively high operating temperature.