Fuel cell control system

Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation

Reexamination Certificate

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Details

C429S006000

Reexamination Certificate

active

10629586

ABSTRACT:
A plurality of individual fuel cells are connected in series with each other to construct the fuel cell. The fuel cell is diagnosed on the basis of an average output voltage Va of the individual cells, their standard deviation σ, individual output voltages, their variances σ2of vibration components and their voltage drop speed of their non-vibration components. For example, if Va is within a normal range and moreover at least one of the individual output voltages is not within a normal range, it is diagnosed that water blocks the fuel electrode. If Va is not within a normal range and moreover σ is within a normal range, it is diagnosed that the electrolyte film is dried. Further, if Va is not within a normal range and moreover σ is not within a normal range, it is diagnosed that the fuel (hydrogen) supply is insufficient.

REFERENCES:
patent: 4756718 (1988-07-01), Ueno et al.
patent: 6815107 (2004-11-01), Inai et al.
patent: 2002/0009623 (2002-01-01), St-Pierre et al.
patent: 2002/0091475 (2002-07-01), Hashimoto et al.
patent: A 6-243882 (1994-08-01), None
patent: A 9-245826 (1997-08-01), None
patent: A 2000-208161 (2000-07-01), None
patent: A 2002-164065 (2002-06-01), None
patent: 2003178789 (2003-06-01), None
Yoshiba et al., “Numerical analysis of molten carbonate fuel cell stack peformance: diagnosis of internal conditions using cell voltage profiles”, Journal of Power Sources 87 (2000), pp. 21-27.
Bender et al. “Further refinements in the segmented cell approach to diagnosing performance in polymer electrolyte fuel cells”, Journal of Power Sources 123 (2003), pp. 163-171.

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