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. 13, 1999
Filed:
Oct. 22, 1997
Yoshiaki Enami, Kanagawa, JP;
Fuji Electric Co., Ltd., Kawasaki, JP;
Abstract
A solid polymer electrolyte fuel cell characterized by high cell performance, compact size and low cost prevents condensation and liquefaction of moisture in the reactant gases and facilitates uniform cooling in the electrode planes of the unit cells. The solid polymer electrolyte fuel cell features a unit cell structure including separators, each including an oxidant gas inlet, fuel gas inlets, coolant inlets, an oxidant gas outlet, fuel gas outlets and coolant outlets. The inlets are arranged in a peripheral region of the separators and the outlets in a central region of the separators. The oxidant gas, fuel gas and coolant are made to flow from the peripheral region to the central region such that the temperatures of the oxidant and fuel gases are higher near the reactant gas outlets. A continuous coolant flow path is provided by forming protrusions in the reactant gas conduits.