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. 16, 2010
Filed:
Nov. 14, 2007
Sung Jin Chung, Suwon-si, KR;
Ho Sung Kang, Seoul, KR;
Sang Hoon Lee, Yongin-Si, KR;
Soon IL Jeon, Yongin-si, KR;
Kyu IL Lee, Yongin-si, KR;
Nam Woo Lee, Suwon-si, KR;
Sung Jin Chung, Suwon-si, KR;
Ho Sung Kang, Seoul, KR;
Sang Hoon Lee, Yongin-Si, KR;
Soon Il Jeon, Yongin-si, KR;
Kyu Il Lee, Yongin-si, KR;
Nam Woo Lee, Suwon-si, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
A power-down control method of a fuel cell hybrid vehicle includes determining an operation mode when a key-off command is input. If the mode is a fuel cell mode, the method includes: converting a low voltage DC-DC converter connected to an auxiliary battery to a boost mode; maintaining a driving state of a high voltage part, powered by voltage from the auxiliary battery and boosted by the low voltage DC-DC converter; subsequently stopping operation of a fuel cell stack and turning off the high voltage part; and subsequently turning off the low voltage DC-DC converter. If the mode is a hybrid mode, the method includes: maintaining a driving state of the high voltage part, powered by voltage from a super capacitor; subsequently stopping operation of the fuel cell stack and turning off the high voltage part; subsequently turning off the DC-DC converters; and subsequently cutting power of the super capacitor.