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Wax phase change cools hybrid vehicle batteries Hot

Rick DeMeis Written by Rick DeMeis     July 11, 2010     Hits: 1082     Favorites0 Add to favorites
 
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Hybrid vehicle battery cooling may be simplified in the future by using the heat of fusion of wax to store excess battery cell heat.

 

Hybrid vehicle battery cooling may be simplified in the future by using the heat of fusion of wax to store excess battery cell heat.

AllCell Technologies has developed a phase-change material of paraffin wax in a graphite (pencil lead) matrix to cool hybrid and electric vehicle lithium-ion batteries. The energy required to melt the wax absorbs excess latent heat from the battery cells. The melt is contained by the graphite structure until the energy is released by active cooling or back into the cell upon shutdown. The technique could even eliminate the more complex use of fans or liquids in active cooling systems.

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