SECONDARY BATTERY POUCH HAVING IMPROVED STABILITY, POUCH-TYPE SECONDARY BATTERY USING SAME, AND MEDIUM- OR LARGE-SIZED BATTERY PACK

Title:

SECONDARY BATTERY POUCH HAVING IMPROVED STABILITY, POUCH-TYPE SECONDARY BATTERY USING SAME, AND MEDIUM- OR LARGE-SIZED BATTERY PACK

Document Type and Number:

WIPO Patent Application WO/2012/018200

Kind Code:

A3

Abstract:

The present invention relates to a pouch-type secondary battery having improved stability, and more particularly to a pouch-type secondary battery which is designed such that the shape of the pouch is changeable to disconnect the connection parts between an electrode lead and an electrode tab when the internal pressure of the pouch rises due to excessive charging or the like, and a battery pack including the same. The present invention can significantly increase the lifetime and stability of a pouch-type secondary battery, without the need for additional materials, devices, or the like in the manufacturing of the secondary battery, by fundamentally interrupting the current flow when gas is generated in the secondary battery, and the present invention can provide a pouch-type secondary battery capable of being low cost, light weight, and a battery that is easily changeable in shape, etc.

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Inventors:

CHO SEUNG SU (KR)
YOON YOU RIM (KR)
CHOI SEUNG DON (KR)
JEON HO JIN (KR)
CHOI DAE SIK (KR)
KWON DAE HONG (KR)

Application Number:

PCT/KR2011/005637

Publication Date:

May 03, 2012

Filing Date:

July 30, 2011

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)
CHO SEUNG SU (KR)
YOON YOU RIM (KR)
CHOI SEUNG DON (KR)
JEON HO JIN (KR)
CHOI DAE SIK (KR)
KWON DAE HONG (KR)

International Classes:

H01M50/105; H01M50/536

Foreign References:

KR20080036257A	2008-04-28
KR100876455B1	2008-12-29
KR100889765B1	2009-03-24
KR100428974B1	2004-04-29

Other References: