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:
Oct. 11, 2016
Filed:
May. 23, 2013
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Kokoku Intech Co., Ltd., Tokyo, JP;
Yasushi Hirakawa, Moriguchi, JP;
Shinya Muroi, Kawagoe, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
KOKOKU INTECH CO., LTD., Tokyo, JP;
Abstract
A sealed battery includes an electrode body; a battery case housing the electrode body and having an open surface; a lid member closing the case; a liquid inlet formed penetrating through the lid member; and a sealing member. The sealing member has: a metal sealing plate welded to the lid member to cover and seal the liquid inlet; and an annular movable portion displaceable between a contact position contacting the entire circumference of the inlet and a non-contact position not contacting at least a portion of the inlet. The movable portion is displaced to the non-contact position when the pressure of the inside region of the battery case sealed by the movable portion in the contact position is increased beyond a limit value with respect to the pressure of the outside region opposite from the inside region with respect to the movable portion.