US Patent 9163887 Battery cooling structure

A battery cooling structure includes a cooling plate and a heat transfer sheet. The cooling plate is to cool a battery module including a plurality of battery cells arranged side by side. The heat transfer sheet is provided between the cooling plate and a cooling surface of the battery module to transfer heat from the cooling surface to the cooling plate. The heat transfer sheet is deformable by a pressure applied to the heat transfer sheet. The heat transfer sheet includes a positioning hole through which the cooling surface of the battery module is visible when the heat transfer sheet is assembled to the battery module.