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:
Nov. 15, 2016
Filed:
Dec. 10, 2014
Applicant:
Hyundai Motor Company, Seoul, KR;
Inventors:
Kwi Seong Jeong, Gyeonggi-do, KR;
Sang Bok Won, Seoul, KR;
Young Bum Kum, Seoul, KR;
Jae Jun Ko, Gyeonggi-do, KR;
Assignee:
Hyundai Motor Company, Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/36 (2006.01); H01M 8/04 (2016.01);
U.S. Cl.
CPC ...
G01R 31/3637 (2013.01); H01M 8/04559 (2013.01); H01M 8/04649 (2013.01); H01M 2250/20 (2013.01); Y02E 60/50 (2013.01);
Abstract
Disclosed are an apparatus and a method for diagnosing a state of a fuel cell stack with high accuracy by reducing the deviation of a harmonic component although the voltage variation of the fuel cell stack is substantial. According to the present invention, a harmonic component is detected by converting the difference between the voltage of the fuel cell stack and a moving average voltage to a frequency and the state of the fuel cell stack is diagnosed based on the size of the detected harmonic component.