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. 10, 2015
Filed:
Jan. 18, 2013
Samsung Sdi Co., Ltd., Yongin, Gyeonggi-do, KR;
Daekyu Kim, Yongin, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
The present disclosure relates to a cylindrical lithium ion secondary battery, which can prevent a cylindrical can from being cracked due to an external shock applied during an assembling process while controlling a rupture pressure of the cylindrical can. The cylindrical lithium ion secondary battery includes a cylindrical can, an electrode assembly accommodated in the cylindrical can with an electrolyte, and a cap assembly sealing the cylindrical can, wherein the cylindrical can has a cylindrical bottom portion and a side portion extending from the bottom portion to the cap assembly, and a safety vent having a thickness gradient is formed on the bottom portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile