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:
Dec. 01, 2009
Filed:
Oct. 19, 2005
Akihiko Kanouda, Hitachinaka, JP;
Mutsumi Kikuchi, Hitachi, JP;
Yasuaki Norimatsu, Hitachinaka, JP;
Junichi Kimura, Koganei, JP;
Eisaku Fujita, Chofu, JP;
Makoto Suzuki, Fuchu, JP;
Akira Ishii, Higashiyamato, JP;
Manabu Murakawa, Akishima, JP;
Hideaki Koyama, Higashimurayama, JP;
Kazuaki Adachi, Kokubunji, JP;
Akihiko Kanouda, Hitachinaka, JP;
Mutsumi Kikuchi, Hitachi, JP;
Yasuaki Norimatsu, Hitachinaka, JP;
Junichi Kimura, Koganei, JP;
Eisaku Fujita, Chofu, JP;
Makoto Suzuki, Fuchu, JP;
Akira Ishii, Higashiyamato, JP;
Manabu Murakawa, Akishima, JP;
Hideaki Koyama, Higashimurayama, JP;
Kazuaki Adachi, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
When the mobile type information terminal is transferred between an operating state and a standby state, self diagnosis is performed. The fuel cell charges the secondary cells with a normal current of fixed value I, and when the output voltage of the boost DC/DC converter (when PG=L), the charge current is reduced to the fixed value and aging is performed. After aging is performed for 60 seconds, charging is performed once again performed at the normal fixed value I. This type of operation is repeated 30 times. During aging, when the output voltage from the boost DC/DC converter is reduced (when PG=L), aging is stopped and after 20 seconds aging is performed again, and this operation is done 10 times. The mobile type information terminal can perform self diagnosis and retrial of regeneration without the user being aware, in which secondary batteries and a fuel cell are loaded.