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. 19, 2014
Filed:
Dec. 21, 2010
Yoo Eup Hyung, Yongin-si, KR;
Seok Gyun Chang, Yongin-si, KR;
Soon Ki Woo, Yongin-si, KR;
Youn Han Chang, Yongin-si, KR;
Yoo Eup Hyung, Yongin-si, KR;
Seok Gyun Chang, Yongin-si, KR;
Soon Ki Woo, Yongin-si, KR;
Youn Han Chang, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A cylindrical lithium ion secondary battery includes an electrode assembly; a center pin positioned within the electrode assembly and having upper and lower ends that are closed; a can containing the electrode assembly and the center pin; and a cap assembly coupled to the top of the can. The center pin can include a body extending a predetermined length with its upper and lower end open and at least one closure member adapted to close the upper and lower ends of the body and to melt or fracture at a predetermined temperature. The center pin body may also or alternatively include a circuit member positioned inside the center pin and adapted to be short-circuited in the case of overcharging and to consume current.