Patent ID: 11881591
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for manufacturing a venting device inserted into a sealing part of a pouch of a secondary battery, the method comprising:
a step of forming a metal plate to manufacture a housing having an insertion space therein using first and second drawing processes in which the metal plate is elongated by using first and second punches, respectively;
a step of installing a plate spring onto a gasket;
a step of inserting the gasket, onto which the plate spring is installed, into the insertion space of the housing; and
a step of crimping a crimping part onto the plate spring and the gasket, the crimping part formed from an upper end of the housing,
wherein a passage is defined through the gasket providing gas communication between an inside and an outside of the pouch, and the plate spring is configured to open and close the passage in response to a change in an internal pressure of the pouch.