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:
Jan. 11, 2022
Filed:
Feb. 20, 2019
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Kohei Oda, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A fuel cell system includes a power supply circuit that supplies electric power from a fuel cell and a secondary battery to the load and charges the secondary battery with electric power from the fuel cell. A decision value acquirer monitors a charge-discharge state of the secondary battery and obtains a decision value that is used to determine a degree of localization of an ion concentration in an electrolytic solution in the secondary battery. When the decision value becomes equal to or greater than a predetermined reference value, a controller limits discharge of the secondary battery. When the decision value is equal to or greater than the reference value and the required power decreases, the controller limits a decrease in output power of the fuel cell and causes the secondary battery to be charged with the electric power corresponding to the limitation imposed on the decrease in output power.