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:
May. 12, 2009
Filed:
Nov. 23, 2004
Seiji Sano, Susono, JP;
Yasushi Araki, Gotenba, JP;
Seiji Sano, Susono, JP;
Yasushi Araki, Gotenba, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
In a fuel cell, a porous portion is formed in a separator. At a surface of the porous portion opposite to a surface where a reactant gas passage is formed, a cooling gas passage is formed. The cooling gas passage may be fluidly connected to a reactant gas supply passage for supplying reactant gas to the fuel cell. The cooling gas passage is controllable in flow amount. The porous portion is formed only in a separator portion where a downstream portion of the reactant gas passage is located. At a separator portion where an upstream portion of the reactant gas passage is located, a coolant passage is formed. A rib and a rib-bottom portion have a great porosity. A groove may be filled with porous material. The porous portion may be replaced by a water exchange portion. A portion of the separator other than the region of the porous portion may be made by porous material. Due to these, a fuel cell can be obtained where removal of product water is improved, product water can be utilized for humidifying gas, and product water can be uniformly removed.