Pouch exterior material for secondary battery, pouch type secondary battery using the same, and method of manufacturing the same

A pouch type secondary battery comprising:

• an electrode assembly;
• and
• a sheet type pouch exterior material packing the electrode assembly, wherein the pouch exterior material comprises:
• a sheet having an upper surface and a lower surface;
• an inserting portion configured to receive a side surface of the electrode assembly, wherein the inserting portion is provided at a center of the pouch exterior material and having a width equal to a thickness of the electrode assembly;
• and;
• accommodating portions respectively provided symmetrically at opposite sides of the inserting portion, each of the accommodating portions being spaced from the inserting portion.

A method of manufacturing a pouch type secondary battery, the method comprising:

• preparing a sheet type pouch exterior material for packing an electrode assembly, the pouch exterior material comprising:
• a sheet having an upper surface and a lower surface;
• an inserting portion configured to receive a side surface of the electrode assembly, wherein the inserting portion is provided at a center of the pouch exterior material and having a width equal to a thickness of the electrode assembly;
• and
• accommodating portions respectively provided symmetrically at opposite sides of the inserting portion, each of the accommodating portions being spaced from the inserting portion;
• mounting a side surface of the electrode assembly upright in the inserting portion and stacking the accommodating portions by folding up the pouch exterior material from both sides;
• and
• thermally fusing a surrounding region of the stacked accommodating portions.