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1. (WO2015046689) SECONDARY BATTERY CASE AND SECONDARY BATTERY MANUFACTURING METHOD

Pub. No.:    WO/2015/046689    International Application No.:    PCT/KR2014/002299
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Thu Mar 20 00:59:59 CET 2014
IPC: H01M 2/36
H01M 2/08
Applicants: LG CHEM, LTD.
주식회사 엘지화학
Inventors: PARK, Sin Young
박신영
KIM, Jeoung Soo
김정수
LEE, Dong Sub
이동섭
NAM, Sang Bong
남상봉
YOON, Hang Seob
윤항섭
LEE, Hyang Mok
이향목
SEO, Dong Hee
서동희
KO, Hyun Kyung
고현경
WOO, Sang Jin
우상진
Title: SECONDARY BATTERY CASE AND SECONDARY BATTERY MANUFACTURING METHOD
Abstract:
The present invention relates to a secondary battery case and a secondary battery manufacturing method, the secondary battery case comprising: a can for containing an electrode assembly; and a top cap for sealing an upper opening of the can, wherein the top cap comprises a top plate for sealing the upper opening of the can, an injection opening formed through the top plate so as to inject an electrolyte into the can, and a protrusion formed on the upper portion of the injection opening to protrude from the top plate, and the protrusion is press-fitted into the injection opening, thereby sealing the injection opening. According to the present invention, the protrusion is formed to protrude from the top plate such that the protrusion is press-fitted into the upper portion of the injection opening of the top plate and fractured, thereby sealing the injection opening; accordingly, a member for sealing the injection opening is integrally provided with the top plate, thereby saving manufacturing costs and simplifying manufacturing processes.