EXTERIOR MATERIAL MANUFACTURING METHOD FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD FOR LITHIUM SECONDARY BATTERY, EXTERIOR MATERIAL MANUFACTURING DEVICE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

A method for manufacturing an outer shell for a lithium secondary battery according to an embodiment of present disclosure comprising: (a) a step of preparing an electrode assembly mold and the outer shell; (b) a step of wrapping the electrode assembly mold with the outer shell and grapping a portion of the outer shell; and (c) a step of pulling a part of the outer shell grabbed in the step (b) and adjoining the electrode assembly mold and the outer shell.