POUCH-TYPE SECONDARY BATTERY COMPRISING ELECTRODE LEAD WITH ASYMMETRIC NOTCH FORMED THEREON

Title:

POUCH-TYPE SECONDARY BATTERY COMPRISING ELECTRODE LEAD WITH ASYMMETRIC NOTCH FORMED THEREON

Document Type and Number:

WIPO Patent Application WO/2019/009576

Kind Code:

A1

Abstract:

The present invention relates to a pouch-type secondary battery comprising an electrode assembly having a structure in which an anode and a cathode are laminated with a separator interposed therebetween, wherein an asymmetrical notch for inducing breakage of an electrode lead is formed on one surface of the electrode lead electrically connected to electrode tabs of the electrode assembly, and a lead film for increasing an adhesive force between the electrode lead and a battery case is attached to the one surface and the other surface of the electrode lead, wherein the lead film is composed of a first lead film positioned in the direction of an electrode assembly receiving portion on the basis of the notch and a second lead film positioned in the electrode lead direction protruding outside the battery case.

Inventors:

PARK JONG PIL (KR)
KIM KYOUNG HO (KR)
LEE MIN WOO (KR)
KIM SANG HUN (KR)
KIM YONG (KR)

Application Number:

PCT/KR2018/007483

Publication Date:

January 10, 2019

Filing Date:

July 02, 2018

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M50/105; H01M50/536; H01M50/54; H01M50/548; H01M50/55; H01M50/553; H01M50/562; H01M50/574

Foreign References:

KR20170021102A	2017-02-27
KR101192077B1	2012-10-17
KR101335122B1	2013-12-03
JP2005044523A	2005-02-17
JP2002008629A	2002-01-11
KR20170085693A	2017-07-25
KR20160129763A	2016-11-09
KR101601123B1	2016-03-08
KR101614434B1	2016-05-02
KR20120139590A	2012-12-27

Other References: