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:
Mar. 18, 2014
Filed:
Dec. 04, 2008
Applicant:
Carl A. Reiser, Stonington, CT (US);
Inventor:
Carl A. Reiser, Stonington, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for shutting down a fuel cell power plant () shuts off () process air, recycles (-) air exhaustto air inlets, and connects an auxiliary load to the stack (). Coulombs are counted by integrating () current () or voltage () to the load to determine when all oxygen in the air side (-) of the power plant is consumed and a desired concentration of hydrogen is transferred to the air side of the power plant. The speed of the shutdown processes may be increased by increasing fuel pressure () or adding a battery () in series with the auxiliary load.