Apparatus and method for sealing pouch case of secondary battery

An apparatus for sealing a pouch case of a pouch-type secondary battery, the apparatus comprising:

• an upper compression jig having a pressure applying surface to apply pressure to a sealing portion of the pouch case in a downward direction;
• and
• a lower compression jig having a pressure applying surface to apply pressure to the sealing portion of the pouch case in an upward direction,
• wherein the pressure applying surfaces of the upper and lower compression jigs each extend from a respective inner side end to a respective outer side end, the inner side end being positioned closer than the outer side end to an electrode assembly received in an internal space of the pouch case when the upper and lower compression jigs apply pressure to the sealing portion of the pouch case, and wherein at least one of the upper compression jig and the lower compression jig is configured such that its respective pressure applying surface applies pressure to the sealing portion of the pouch case at a different depth at the inner side end than at the outer side end.