The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2011
Filed:
Dec. 18, 2008
Hyun Woo Park, Daejeon, KR;
Kwang Ho Yoo, Daejeon, KR;
Young Joon Shin, Daejeon, KR;
Han Ho Lee, Daejeon, KR;
Hyun Woo Park, Daejeon, KR;
Kwang Ho Yoo, Daejeon, KR;
Young Joon Shin, Daejeon, KR;
Han Ho Lee, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
Provided is a pouch-type secondary battery including an electrode assembly, electrode tabs extending outward from the electrode assembly, a pouch-type battery case for housing the electrode assembly, first sealing portions for sealing the pouch-type battery case and the electrode tabs, and second sealing portions formed at positions with the exception of electrode tab-positioned sites between the first sealing portions and the electrode assembly. The secondary battery is configured to have a structure such that a channel is formed with electrode tab portions by further sealing inside portions of the electrode tabs with the exception of electrode tab-occupied portions. Such a structure allows for easy unidirectional discharge of gases even when the battery inside reaches a certain level of internal pressure due to evolution of gases and enables previous expectation of the gas discharge direction. Therefore, it is possible to provide a secondary battery with improved safety.