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. 25, 2018
Filed:
May. 30, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Daisuke Hayashi, Nisshin, JP;
Atsushi Ida, Nisshin, JP;
Kazunori Shibata, Mishima, JP;
Nobuaki Nonoyama, Chiryu, JP;
Shuji Kurita, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A fuel-cell unit cell comprises: a membrane electrode and gas diffusion layer assembly; a cathode-side separator made of a press-molded plate, the cathode-side separator forming a plurality of cathode gas flow paths and non-flow-path portions therebetween on a cathode-side surface of the membrane electrode and gas diffusion layer assembly; and an anode-side separator made of a press-molded plate, the anode-side separator forming a plurality of anode gas flow paths and non-flow-path portions therebetween on an anode-side surface of the membrane electrode and gas diffusion layer assembly. At least one gas flow path among the plural cathode gas flow paths and the plural anode gas flow paths includes a constricting portion that is configured to reduce a flow-path height in a stacking direction of the fuel-cell unit cells as well as to reduce a flow path cross-sectional area of the gas flow path. When projected and observed along the stacking direction, the plural cathode gas flow paths and the plural anode gas flow paths are configured to have mutually different two-dimensional shapes, there exist intersect positions at which the cathode gas flow paths and the anode gas flow path intersect each other, and the constricting portion is provided at a position other than the intersect positions.