Double-layered thermal interface material structure, manufacturing method thereof, and battery device having the same

A battery device comprising a double-layered thermal interface material structure for a stack type battery pack, comprising:

• a layer structure, being made of a thermal interface material, and comprising a body thickness;
• and
• a supporting mesh plate, being buried in the layer structure, and comprising a plate thickness that is smaller than the body thickness;
• wherein the layer structure comprises a top surface and a bottom surface, wherein the top surface and the bottom surface respectively comprise a plurality of upper concave portions and a plurality of lower concave portions;
• wherein the top surface comprises an upper heat conductive protection layer including a plurality of first ceramic fillers, and the bottom surface comprises a lower heat conductive protective layer including a plurality of second ceramic fillers;
• wherein the upper heat conductive protection layer and the lower heat conductive protection layer both are made of a thermally conductive phase change material;
• an upper row of battery cells, conforming the upper concave portions and disposed on the upper concave portions;
• a lower row of battery cells, conforming the lower concave portions and disposed under the lower concave portions;
• wherein the supporting mesh plate comprises a plurality of pores, and each of the pores being fully filled with the thermal interface material;
• wherein, the supporting mesh plate provides a support capability to support the upper row of battery cells.