Pouch type battery cell and method for manufacturing the same

• Main Authors: Lee, In Seok, Lee, Chang Je, Myoung, Gi Hoon
• Format: Patent
• Language: English
• Published: 11.06.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRICITY; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A pouch type battery cell according to an embodiment of the present invention may include an electrode assembly accommodated between a pair of cases, each of which include a first resin layer constituting an innermost layer, a second resin layer constituting an outermost layer, and a metal layer stacked between the first and second resin layers. The pouch type battery cell may include a cup portion, accommodating the electrode assembly, an insulation sealing portion, in which the first resin layers of the pair of cases are sealed to each other, a folded portion, in which an edge of one case of the pair of cases is folded to surround an edge of the other case, and a metal sealing portion, provided on the folded portion, in which the metal layers of the pair of cases are sealed to each other.