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:
Aug. 19, 2014
Filed:
Oct. 03, 2008
Matthew P. Wilson, Groton, CT (US);
Venkateshwarlu Yadha, Dallas, TX (US);
Carl A. Reiser, Stonington, CT (US);
Matthew P. Wilson, Groton, CT (US);
Venkateshwarlu Yadha, Dallas, TX (US);
Carl A. Reiser, Stonington, CT (US);
Ballard Power Systems Inc., Burnaby, CA;
Abstract
A fuel cell power plant () includes a stack () of fuel cells, each of which have an anode (), a cathode (), and a PEM () disposed between the anode and the cathode. A controller () recognizes an indication () of no load demand () by a load (), to operate () an air recycle loop (-) utilizing the process air blower () and transfer the power output () of the stack from the load () to an auxiliary load (), comprising a resistance which will consume a predetermined small amount of power in response to the current applied thereto, when the stack operates at a critical voltage above which fuel cell corrosion is unacceptable. Fuel and air will also be reduced (). The controller may cause increased cathode recycle when the critical voltage is reached and increased air when the voltage is a fraction of a volt below the critical voltage.