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. 02, 2014
Filed:
Feb. 29, 2008
Hironori Noto, Tokai, JP;
Kota Manabe, Toyota, JP;
Hironori Noto, Tokai, JP;
Kota Manabe, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Abstract
Output voltage of a fuel cellis decreased by a converterto conduct an activation treatment to catalyst of the fuel cell, while measuring reduction current by a current sensorwhile scanning output voltage of the fuel cellover a certain range by the converteras measurement of cyclic voltammetry under the condition that supply of oxidation gas to the fuel cellis stopped from a compressor, and this measurement value is integrated by a control device. The control devicefinds a charge amount of electrode catalyst of the fuel cellbased on this integration value, decides whether this charge amount is smaller or not than a degradation decision value, and displays this decision result on a display. A decision can be made precisely as to whether the electrode catalyst of the fuel cell is degraded or not.