Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Reexamination Certificate
2008-08-04
2011-12-06
Tso, Edward (Department: 2858)
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
C320S101000, C324S426000, C429S430000, C429S452000
Reexamination Certificate
active
08072224
ABSTRACT:
Method embodiments for analyzing the future performance of a fuel cell stack comprise the steps of: a) generating a first polarization curve data by experimentally measuring the voltage of a fuel cell stack across a current range at a first interval; b) dividing the current range into a plurality of discrete current ranges; c) calculate an average voltage value for each discrete current range; d) fitting all average voltage values to produce a first average polarization curve; e) conducting steps a) through d) at a second interval to produce a second average polarization curve; f) comparing the first average polarization curve to the second polarization curve to calculate the drop in voltage and thereby the fuel cell stack degradation; and g) utilizing the calculated drop in voltage between the first and second polarization curves to predict the polarization of the fuel cells at future time intervals.
REFERENCES:
patent: 5763113 (1998-06-01), Meltser et al.
patent: 5929594 (1999-07-01), Nonobe et al.
patent: 6388421 (2002-05-01), Abe
patent: 6411098 (2002-06-01), Laletin
patent: 6469512 (2002-10-01), Singh et al.
patent: 6762587 (2004-07-01), Barbetta
patent: 6847188 (2005-01-01), Keskula et al.
patent: 7087332 (2006-08-01), Harris
patent: 7659018 (2010-02-01), Aoyagi et al.
patent: 7816884 (2010-10-01), Wake et al.
patent: 2003/0206021 (2003-11-01), Laletin et al.
patent: 2004/0028977 (2004-02-01), Pickup et al.
patent: 2004/0257087 (2004-12-01), Murakami
patent: 2005/0214606 (2005-09-01), Higashionji et al.
patent: 2006/0194082 (2006-08-01), Tucker et al.
patent: 2008/0076012 (2008-03-01), Lienkamp et al.
patent: 2009/0092882 (2009-04-01), Kjeang et al.
patent: 02051866 (1990-02-01), None
Boateng Alexis
Dinsmore & Shohl LLP
Toyoto Motor Engineering & Manufacturing North America, Inc
Tso Edward
LandOfFree
Methods for predicting the future performance of fuel cell... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods for predicting the future performance of fuel cell..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for predicting the future performance of fuel cell... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4308634