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. 05, 2010
Filed:
Jun. 29, 2005
Shinji Hamada, Toyohashi, JP;
Tomohiro Matsuura, Toyota, JP;
Toyohiko Eto, Toyota, JP;
Hiroyuki Miyamoto, Toyohashi, JP;
Shinji Hamada, Toyohashi, JP;
Tomohiro Matsuura, Toyota, JP;
Toyohiko Eto, Toyota, JP;
Hiroyuki Miyamoto, Toyohashi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A nickel-metal hydride storage battery is provided capable of suppressing an increase of discharge reserve of a negative electrode and preventing lowering of battery characteristics. A nickel-metal hydride storage batteryof the present invention comprises a battery main part (an electrode plate group, an electrolyte, and others), a casehousing this battery main part, and a safety valve devicehaving an excessive pressure preventing function for preventing excessive rise of the internal pressure in the caseby discharging gas from the casewhen the internal pressure in the caseexceeds a predetermined value. The safety valve deviceincludes a valve memberhaving a protruding wallforming a valve internal space C communicated with a release holeand has a hydrogen leakage function for allowing leakage of hydrogen gas in the caseout of the battery through the valve internal space C even when the internal pressure in the caseis the predetermined value or less.