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:
Jan. 01, 2019
Filed:
Sep. 07, 2016
Daimler Ag, Stuttgart, DE;
Ford Motor Company, Dearborn, MI (US);
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Michael Procter, North Vancouver, CA;
Yosuke Fukuyama, Kanagawa, JP;
Richard Fellows, Vancouver, CA;
Takeshi Shiomi, Kanagawa, JP;
Daimler AG, Stuttgart, DE;
Ford Motor Company, Dearborn, MI (US);
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
Improved methods are disclosed for shutting down and storing a fuel cell system, particularly for below freezing temperature conditions. The methods comprise stopping power production from the fuel cell stack, monitoring the amount of energy remaining in an energy supply, monitoring the stack temperature, and repeatedly performing a predetermined warming operation if the stack temperature falls to a normal threshold temperature and if the amount of energy remaining exceeds a certain minimum amount. In the improved methods, when the amount of remaining energy is less than or equal to the minimum amount, a final warming operation is performed that differs from the predetermined warming operation.