Patent ID: 8974955
Filing Date: 2015-03-10
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. Amethod for manufacturing a battery cell including an electrode assembly and electrolyte provided in a battery case composed of a laminate sheet having a resin layer and a metal layer, comprising: (a) thermally fusing and sealing a periphery of the battery case except for an end part thereof while the electrode assembly is mounted in the battery case; (b) introducing the electrolyte through the end part and then sealing the end part via thermal fusion; (c) charging and discharging the battery cell to activate the battery cell; (d) puncturing an unsealed part inside the end part to form a through-hole communicating with an inside of the battery case; and (e) pulling top and bottom faces of the battery case in opposite directions to each other at the unsealed part to open the top and bottom faces of the battery case by a suction device while applying vacuum pressure, to thereby remove gas generated during activation as well as excess electrolyte, wherein the suction device comprises a first suction pad contacting the top face of the battery case and a second suction pad contacting the bottom face of the battery case, and wherein each of the first suction pad and the second suction pad has a structure comprising an adhesion part contacting an outer side of the battery case and a hollow part that is connected to the adhesion part, communicates with a through-hole formed at an unsealed part of the battery case and applies vacuum pressure.