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:
May. 25, 2021
Filed:
Dec. 11, 2018
Applicants:
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Inventors:
Jung Hwan Ryu, Gyeonggi-do, KR;
Soon Woo Kwon, Gyeonggi-do, KR;
Assignees:
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/00 (2006.01); H01M 8/04664 (2016.01); G01R 31/385 (2019.01); G01R 31/36 (2020.01); H01M 8/0438 (2016.01); H01M 8/04537 (2016.01); H01M 8/04992 (2016.01);
U.S. Cl.
CPC ...
H01M 8/04671 (2013.01); G01R 31/3648 (2013.01); G01R 31/385 (2019.01); G01R 31/3865 (2019.01); H01M 8/04395 (2013.01); H01M 8/04552 (2013.01); H01M 8/04992 (2013.01); H01M 2250/20 (2013.01); Y02T 90/40 (2013.01);
Abstract
A pinhole determination method for a fuel cell includes steps of blocking air supply to a fuel cell stack by a controller; measuring a cell voltage value of each of unit fuel cells of the fuel cell stack; and determining whether or not a pinhole is present by comparing the cell voltage value with an average cell voltage value.