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. 12, 2013
Filed:
Feb. 12, 2010
Hyo-rim Bak, Suwon-si, KR;
Hyo-Rim Bak, Suwon-si, KR;
Samsung SDI Co., Ltd., , KR;
Abstract
A cylindrical secondary battery including an electrode assembly including a positive electrode having a positive electrode active material layer containing lithium carbonate (LiCO), a negative electrode including a negative electrode active material layer, and a separator separating the positive electrode from the negative electrode, a can housing the electrode assembly, a cap assembly disposed on the can, and an electrolyte injected into the can. A content of the lithium carbonate (LiCO) is in the range of 1.0 to 1.5 wt % of the total weight of the positive electrode active material layer, a content of the electrolyte is in the range of 10.8 to 11.93 wt % of the total weight of a bare cell, and an operating pressure for interrupting current by the cap assembly is in the range of 7 to 9 kgf/cm.