AN ENERGY STORAGE DEVICE AND A METHOD FOR MANUFACTURING THE SAME

An energy storage device includes: an outer casing lined with a conductive thermal foam; and a cell assembly including at least one cell holder structure and a plurality of energy storage cells held in the holder structure and being thermally connected by a phase change material. The cell assembly being contained within the outer casing. The conductive thermal foam and the phase change material fill empty spaces within the outer casing in a ratio of 15% to 85%.