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:
Jul. 20, 2010
Filed:
Jun. 29, 2005
Katsunori Komori, Toyohashi, JP;
Tomohiro Matsuura, Toyota, JP;
Shinji Hamada, Toyohashi, JP;
Toyohiko Eto, Toyota, JP;
Yoshiyuki Nakamura, Aichi-ken, JP;
Katsunori Komori, Toyohashi, JP;
Tomohiro Matsuura, Toyota, JP;
Shinji Hamada, Toyohashi, JP;
Toyohiko Eto, Toyota, JP;
Yoshiyuki Nakamura, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A nickel-metal hydride storage battery is provided capable of suppressing changes in discharge reserve and charge reserve of a negative electrode to prevent lowering of battery characteristics for a long term. 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 device. The safety valve deviceincludes a valve memberof a closed-end substantially cylindrical shape. This nickel-metal hydride storage batteryis arranged such that a hydrogen leak rate V(μl/h/Ah) of the battery having been charged and discharged and then charged to 60% SOC satisfies a relationship: 2≦V≦4, the hydrogen leak rate being per unit of battery capacity under an atmosphere at a battery temperature of 45° C., and a reduced pressure of 10 kPa.