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http://dx.doi.org/10.9766/KIMST.2016.19.4.469

Enhancement of Thermal Insulation Performance with Phase Change Material for Thermal Batteries  

Lee, Jaein (The 4th Research and Development Institute, Agency for Defense Development)
Ha, Sang-hyeon (The 4th Research and Development Institute, Agency for Defense Development)
Kim, Kiyoul (The 4th Research and Development Institute, Agency for Defense Development)
Cheong, Haewon (The 4th Research and Development Institute, Agency for Defense Development)
Cho, Sungbaek (The 4th Research and Development Institute, Agency for Defense Development)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.19, no.4, 2016 , pp. 469-475 More about this Journal
Abstract
Thermal batteries are primary reserve power sources, which are activated upon the melting of eutectic electrolytes by the ignition of heat sources. Therefore, sufficient thermal insulation is absolutely needed for the stable operation of thermal batteries. Currently, excessive amount of heat sources is being used to compensate the heat loss in the cell stack along with the insertion of metal plates and thermal insulators to reserve heat at the both ends of cell stack. However, there is a possibility that the excessive heat flows into the cell stack, causing a thermal runaway at the early stage of discharge. At the same time, the internal temperature of thermal batteries cannot be maintained above the battery operating temperature at the later stage of discharge because of the insufficient insulation. Therefore, the effects of Phase Changing Material(PCM) plates were demonstrated in this study, which can replace the metal and insulating plates, to improve the thermal insulation performance and safety of thermal batteries.
Keywords
Thermal Battery; Thermal Insulation Performance; PCM; Latent Heat;
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