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. 17, 2015
Filed:
Nov. 25, 2009
Sang Uk Kwon, Gyeonggi-Do, KR;
Nam Woo Lee, Gyeonggi-Do, KR;
Jae Jun Ko, Gyeonggi-Do, KR;
Woo Suk Sung, Gyeonggi-Do, KR;
Sang Uk Kwon, Gyeonggi-Do, KR;
Nam Woo Lee, Gyeonggi-Do, KR;
Jae Jun Ko, Gyeonggi-Do, KR;
Woo Suk Sung, Gyeonggi-Do, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
A method for shutting down a fuel cell system includes: determining whether an outside air temperature is below a first predetermined reference temperature when a shutdown of a fuel cell system is detected; warming up the fuel cell stack by operating balance of plant components of the fuel cell system and a stack load using the power of the fuel cell stack, while the supply of hydrogen to the fuel cell stack is normally maintained, when the outside air temperature is below the first reference temperature; removing water in the fuel cell stack by passing air supplied by an air supply system through the stack load to supply heated air to a cathode of the fuel cell stack; and shutting down the fuel cell system by cutting off the supply of air after the removal of water. The method can eliminate or reduce cold start failure.