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. 17, 2009
Filed:
Feb. 27, 2003
Applicant:
Soichiro Ogawa, Yokosuka, JP;
Inventor:
Soichiro Ogawa, Yokosuka, JP;
Assignee:
Nissan Motor Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/00 (2006.01); H01M 8/04 (2006.01); H01M 8/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system has two modes which protect it from freezing of water while a fuel cell stack has stopped. An effective protection mode from the viewpoint of energy consumption is selected based on the estimated restart time and outside air temperature shift, and used to protect the system. The protection modes are: a first protection mode which prevents freezing by heating the water supplied to the fuel cell, and a second protection mode which avoids freezing of water in the fuel cell by discharging the water in the fuel cell to outside the fuel cell, and freezing the water outside the fuel cell.