SEALING TOOL FOR POUCH-TYPE SECONDARY BATTERY

Title:

SEALING TOOL FOR POUCH-TYPE SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2015/030373

Kind Code:

A1

Abstract:

The present invention relates to a sealing tool for a pouch-type secondary battery for sealing a pouch in which an electrode assembly is embedded, the sealing tool comprising: a holder which is installed to be movable upwardly or downwardly in the upper part or lower part of the pouch; and a sealing block which is coupled to the holder such that the sealing block is brought into contact with the pouch by the upward or downward movement of the holder, thereby sealing the pouch, and the sealing block being spaced apart from the holder to form a gap between the sealing block and the holder. In the present invention, a spacer member is interposed between the holder and the sealing block of the sealing tool so as to form a gap therebetween which provides a space in which the sealing block is transformed, thereby minimizing the transformation of the sealing surface of the sealing block. Accordingly, a sealing portion of the pouch is formed to have a constant sealing thickness, thereby preventing an electrolyte within the pouch from leaking to the outside.

Inventors:

WON JONG HYUN (KR)
KIM MIN SU (KR)
NO GYO RYUN (KR)
KIM SEUL KI (KR)

Application Number:

PCT/KR2014/006899

Publication Date:

March 05, 2015

Filing Date:

July 28, 2014

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M50/553; H01M50/178; H01M50/55

Foreign References:

KR20120038695A	2012-04-24
US20110018206A1	2011-01-27
KR20090065587A	2009-06-23
KR20120060708A	2012-06-12
US20130189570A1	2013-07-25
KR20130071813A	2013-07-01
KR20120038695A	2012-04-24
KR20110039011A	2011-04-15

Other References: