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:
Jan. 04, 2005
Filed:
Sep. 28, 2001
Soo-ryoung Kim, Daejeon, KR;
Ho-kyung Byun, Daejeon, KR;
Yong-rae Kim, Daejeon, KR;
Kwang-ho Yoo, Daejeon, KR;
Jee-ho Kim, Daejeon, KR;
Soo-Ryoung Kim, Daejeon, KR;
Ho-Kyung Byun, Daejeon, KR;
Yong-Rae Kim, Daejeon, KR;
Kwang-Ho Yoo, Daejeon, KR;
Jee-Ho Kim, Daejeon, KR;
LG Chemical Co., Ltd., Seoul, KR;
Abstract
In a battery in which a separator is disposed between a cathode and an anode, a jelly roll is wound with the separator. The cathode, the anode and the separator are received in a battery case and surrounded with an electrolyte, and an opening of the battery case is sealed by a top cap assembly connected to the cathode. A curved groove is formed on the battery case as a safety element for preventing the explosion of the battery due to an increase of internal pressure, the groove being formed along a line of equal stress on the surface of the battery case.