Pouch, Apparatus For Molding The Pouch, And Method For Manufacturing Secondary Battery Comprising The Pouch

An apparatus for molding a pouch, the pouch having a first seating part and a second seating part, that are connected to each other, the pouch being configured such that when an electrode assembly is mounted and sealed therein, the first seating part and the second seating part are folded to cover top and bottom surfaces of the electrode assembly, and the first seating part and the second seating part are in contact with each other, the apparatus comprising:

• a lower mold in which a first groove recessed by a first depth from a top surface of the lower mold is formed, and in which a second groove is further recessed by a second depth from a bottom surface of the first grove;
• and
• an upper mold having a flat portion formed on one surface thereof, the flat portion configured to be inserted into the first groove, the upper mold having a protrusion extending away from the flat portion, the protrusion configured to be inserted into the second groove,
• wherein the apparatus is configured such that, when the upper mold and the lower mold are pressed together with the pouch sheet disposed between the upper mold and the lower mold, the pouch sheet is molded so that each of the first seating part and the second seating part are molded at respective portions of the pouch sheet, that are pressed by the flat portion, and a sidewall connecting the first seating part to the second seating part forms a surface parallel to a side surface of the electrode assembly when the electrode assembly is mounted and sealed within the pouch.