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:
Mar. 31, 2015
Filed:
Jul. 11, 2008
Se-hoon Baek, Seoul, KR;
Dongmyung Kim, Daejeon, KR;
Eui Kwang Jeong, Daejeon, KR;
Hyunwoo Cho, Seoul, KR;
Joo-hwan Sung, Daejeon, KR;
Se-Hoon Baek, Seoul, KR;
Dongmyung Kim, Daejeon, KR;
Eui Kwang Jeong, Daejeon, KR;
Hyunwoo Cho, Seoul, KR;
Joo-Hwan Sung, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
Disclosed herein are a winding type electrode assembly ('jelly-roll') constructed in a structure in which a cathode sheet and an anode sheet are wound in a circle while a separator is interposed between the cathode sheet and the anode sheet or the assembly is compressed in one direction after winding, wherein the jelly-roll includes an active material non-coated portion formed at the wound end of the jelly-roll, a conductive tape attached to the wound end of the jelly-roll for covering the wound outside of the jelly-roll including the active material non-coated portion, and an elastic member attached to the inside of the active material non-coated portion, the elastic member having a thickness equivalent to 50 to 200% of the height of an active material layer, and a secondary battery including the same.