EXTERNAL PACKAGING MATERIAL FOR BATTERY DEVICE, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME, AND BATTERY PACK

摘要

An external packaging material for covering a battery device is provided. The packaging material includes a laminated film having a laminated structure having two or more resin film layers stacked. In the external packaging material, the laminated structure has no metallic foil, and at least one layer in the resin film layers contains a moisture absorbing material.