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:
Aug. 04, 2015
Filed:
Jan. 24, 2008
Jeon Keun OH, Daejeon, KR;
Eun Joo Lee, Daejeon, KR;
Jae Myoung Lee, Gyeonggi-do, KR;
Ghi Soo Han, Seoul, KR;
Jeon Keun Oh, Daejeon, KR;
Eun Joo Lee, Daejeon, KR;
Jae Myoung Lee, Gyeonggi-do, KR;
Ghi Soo Han, Seoul, KR;
SK Innovation Co., Ltd., Seoul, KR;
Abstract
This invention relates to a lithium secondary battery, the tab shape of which is improved, thus increasing the safety and improving the electrical properties thereof. The lithium secondary battery includes an electrode group composed of a first electrode, a second electrode, and a separator disposed between the first electrode and the second electrode, a first electrode tab connected to the first electrode, and a second electrode tab connected to the second electrode. The first electrode tab includes a first portion connected to the first electrode and a second portion, which is not the first portion, the width of the first portion being less than the width of the second portion.