Method For Manufacturing Secondary Battery

Abstract: The present invention relates to a method for manufacturing a secondary battery, the method comprising the steps of: preparing a pouch case, the pouch case comprising an accommodation part in which an electrode assembly is accommodated, and a collection part which is in communication with the accommodation part and collects gas generated during charging and discharging processes for activation; forming an opening in the collection part to discharge the gas collected in the collection part; pressing at least some of the edges of the pouch case to the outside of the pouch case; and forming a main sealing part between the accommodation part and the collection part after the pouch case is pressed or in a state in which the pouch case is pressed, to separate the accommodation part from the collection part and seal the accommodation part.

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