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:
Feb. 27, 2018
Filed:
Nov. 11, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Yasuo Matsubara, Anjo, JP;
Kenji Umayahara, Miyoshi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A fuel cell system includes a fuel cell containing a unit cell with an anode and a cathode included therein, a hydrogen supply unit that supplies hydrogen gas to the anode, a circulation pump that supplies an anode exhaust gas containing hydrogen that has not been used for power generation by the fuel cell and is discharged from the anode, once again to the anode to circulate the anode exhaust gas, and a controller that controls supply quantity of the hydrogen gas by the hydrogen supply unit as well as rotating speed of the circulation pump. The controller drives the circulation pump so that the rotating speed of the circulation pump approaches an optimum rotating speed of the circulation pump at which a total hydrogen loss quantity becomes a minimum under a specified current value, the total hydrogen loss quantity being a sum of a hydrogen quantity corresponding to an electric power necessary for driving the circulation pump and a hydrogen quantity passing from anode side to cathode side of the fuel cell.