POUCH-TYPE SECONDARY BATTERY INCLUDING ELECTRODE LEAD HAVING ELECTRICAL CURRENT LIMITING FUNCTION

Title:

POUCH-TYPE SECONDARY BATTERY INCLUDING ELECTRODE LEAD HAVING ELECTRICAL CURRENT LIMITING FUNCTION

Document Type and Number:

WIPO Patent Application WO/2016/178539

Kind Code:

A1

Abstract:

Provided is a pouch-type secondary battery which is a pouch-type secondary battery comprising: an electrode assembly having an electrode tab; an electrode lead connected to the electrode tab; a pouch cover material housing and sealing the electrode assembly such that a portion of the electrode lead is exposed; a first sealant interposed between the top surface of the electrode lead and an inner side surface of the pouch cover material; and a second sealant interposed between the bottom surface of the electrode lead and an inner side surface of the pouch cover material. The electrode lead comprises: a connecting part connected to the electrode tab; a terminal part exposed to the outside of the pouch cover material; and a fuse part between the connecting part and the terminal part. The fuse part comprises: a separating groove including a horizontal slit in the center thereof which is parallel to the width direction of the electrode lead; and a breaking part connected to the separating groove to separate the terminal part from the connecting part. The shapes of the first sealant and the second sealant are different from each other such that when the internal pressure of the secondary battery rises, the deforming force of the pouch cover material acts in directions opposite to the top and bottom surfaces of the electrode lead so that the breaking part breaks.

More Like This:

WO/2024/075964	SECONDARY BATTERY, MANUFACTURING METHOD FOR SAME SECONDARY BATTERY, AND PRESSING DEVICE USED FOR SAME MANUFACTURING METHOD
JP7306429	BATTERY PACKAGING MATERIAL, MANUFACTURING METHOD THEREOF, AND BATTERY
JP6019137	Tape adhesion automated equipment

Inventors:

CHO SEUNG-SU (KR)
KIM JUNG-JIN (KR)
KIM JIN-YOUNG (KR)
JEONG GI-SU (KR)
JEONG WON-SEOK (KR)
CHOI SEUNG-DON (KR)
HWANG WON-PILL (KR)

Application Number:

PCT/KR2016/004765

Publication Date:

November 10, 2016

Filing Date:

May 04, 2016

Export Citation:

Click for automatic bibliography generation Help

Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M50/105; H01M50/176; H01M50/184; H01M50/533; H01M50/548; H01M50/557

Foreign References:

KR20130117637A	2013-10-28
JP2000067846A	2000-03-03
KR20150034637A	2015-04-03
KR20090131573A	2009-12-29
KR20120039181A	2012-04-25

Other References: