POUCH-TYPE BATTERY CASE AND POUCH-TYPE SECONDARY BATTERY COMPRISING SAME

A pouch type battery case according to the present invention includes a cup portion provided with an accommodation space for accommodating an electrode assembly, a terrace portion formed along a perimeter of the accommodation portion, and at least one gas discharge portion, wherein each of the gas discharge portions includes a through hole formed in at least one of the cup portion or the terrace portion, a gas permeable film covering the through hole from the inside of the battery case, and a polymer-based protection film covering the through hole from the outside of the battery case, and the gas discharge portion having the structure described above exhibits excellent performance in preventing moisture penetration from the outside while continuously discharging gas, and thus may provide a pouch type secondary battery having improved safety and lifespan.