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:
Sep. 21, 2021
Filed:
Jun. 15, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Manabu Takahashi, Toyota, JP;
Toyota Jidosha Kabushishi Kaisha, Toyota, JP;
Abstract
The inspection method for a fuel cell stack including a plurality of unit cells comprises: (a) operating a fuel cell system, including the fuel cell stack and an anode gas circulation flow path that is connected between an anode gas discharge port and an anode gas supply port of the fuel cell stack to circulate anode gas, under a predetermined liquid water accumulation condition to accumulate liquid water in the anode gas circulation flow path; (b) causing, after the step (a), the fuel cell system to stop and stand by until a predetermined restarting condition is satisfied; and (c) restarting, after the step (b), the fuel cell system to implement power generation by the fuel cell stack, and measuring voltage of each of the unit cells to detect a unit cell having negative voltage.