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. 23, 2016
Filed:
Sep. 25, 2009
Applicants:
Masaaki Matsusue, Mishima-shi, JP;
Yutaka Tano, Toyota, JP;
Naohisa Tsuchiya, Nagoya, JP;
Tadaomi Kinomoto, Toyota, JP;
Inventors:
Masaaki Matsusue, Mishima-shi, JP;
Yutaka Tano, Toyota, JP;
Naohisa Tsuchiya, Nagoya, JP;
Tadaomi Kinomoto, Toyota, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/04 (2006.01);
U.S. Cl.
CPC ...
H01M 8/04649 (2013.01); H01M 8/04059 (2013.01); H01M 8/04365 (2013.01); H01M 8/04559 (2013.01); H01M 8/04589 (2013.01); Y02E 60/50 (2013.01);
Abstract
A fuel cell system acquires an operation state of a fuel cell and estimates an IV characteristic that indicates a relationship between a current and a voltage in the fuel cell. At least one of a resistance overvoltage, an activation overvoltage, a current-voltage hysteresis and a concentration overvoltage of the fuel cell is determined from the operation state of the fuel cell, and the IV characteristic is estimated based on the determined result.