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:
Aug. 01, 2000
Filed:
Dec. 03, 1998
Takeshi Yao, Fujisawa, JP;
Hideki Kasahara, Kamakura, JP;
Tatsuhiko Suzuki, Kamakura, JP;
Motohide Masui, Chigasaki, JP;
Hajime Konishi, Ikoma, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Abstract
A method for managing a back-up power source capable of maintaining the discharge capacity of a nickel metal-hydride storage battery for a long-term at a low cost, and is suitable for the management of the back-up power source for the guidance lights, the emergency lights, the information telecommunication systems, and the like is disclosed. The present invention provides a method for managing the back-up power source which uses a nickel metal-hydride storage battery including a positive electrode mainly consisting of nickel oxide, a negative electrode mainly consisting of a hydrogen storage alloy, a separator and an alkaline electrolyte, wherein an intermittent charge is performed on the nickel-metal hydride storage battery, comprising: calculating a self-discharge quantity of the nickel-metal hydride storage battery during idle period of the intermittent charge on the basis of a temperature of the nickel-metal hydride storage battery at the idling; and controlling the charging of the nickel-metal hydride storage battery on the basis of the obtained self-discharge quantities.