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:
Sep. 25, 2012
Filed:
Dec. 14, 2007
Sangsok Jung, Yongin-si, KR;
Sangsok Jung, Yongin-si, KR;
Samsung SDI Co., Ltd., Gongse-dong, Giheung-gu, Yongin-si, Gyeonggi-do, KR;
Abstract
A secondary battery has a safety vent, and the safety vent has an asymmetric structure and provides a substantial opening for the battery, instead of having a local crack, to rapidly vent to atmosphere in order to prevent the secondary battery from bursting when the internal pressure of a battery increases excessively or external impact is applied thereto. The secondary battery includes an electrode assembly charging/discharging functions, a can housing the electrode assembly, a cap assembly that includes a cap plate closing up an open part of the can, and a safety vent having an asymmetric track shape that is provided in the cap plate of the cap assembly.