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:
Nov. 27, 2012
Filed:
Oct. 10, 2008
Takeru Yamamoto, Fukushima, JP;
Ken Segawa, Fukushima, JP;
Hiroyuki Akashi, Kanagawa, JP;
Takayuki Aita, Fukushima, JP;
Shunsuke Saito, Fukushima, JP;
Takeru Yamamoto, Fukushima, JP;
Ken Segawa, Fukushima, JP;
Hiroyuki Akashi, Kanagawa, JP;
Takayuki Aita, Fukushima, JP;
Shunsuke Saito, Fukushima, JP;
Sony Corporation, Tokyo, JP;
Abstract
A battery pack includes a battery including a battery element covered with a packaging member, a battery protection circuit board, a covering material, and a rippable portion formed in a part of the covering material. The battery element includes a positive electrode and a negative electrode which are spirally wound or stacked through a separator. The covering material collectively covers the battery and the battery protection circuit board. The rippable portion rips open due to a gas generated from the battery in the event of an abnormal condition to form a gas release hole for releasing the gas outside the battery pack.