Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2008-05-13
2008-05-13
Kalafut, Stephen (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S006000, C429S006000
Reexamination Certificate
active
07371476
ABSTRACT:
A fuel cell system and a related control method are disclosed wherein, during start-up of a fuel cell stack1, a controller21operates a DC/DC converter13in a voltage control mode to allow an electric power to be supplied from a secondary battery7to a load6at an output voltage managed by the DC/DC converter. Under such a condition, an electric power level appearing when a voltage level of the electric power to be supplied from the secondary battery to the load lies at a value greater than an open voltage level of the fuel cell stack1. Next, the DC/DC converter13is operative in an electric power control mode to allow the electric power to be supplied from the secondary battery to the load at a managed electric power output. Then, a level of the electric power to be supplied to the load is detected with the DC/DC converter13, which permits the electric power to be supplied from the secondary battery to the load at an electric power level less than a resulting detected electric power level.
REFERENCES:
patent: 5780980 (1998-07-01), Naito
patent: 5998885 (1999-12-01), Tamor et al.
patent: 6534208 (2003-03-01), Zinser
patent: 6580977 (2003-06-01), Ding et al.
patent: 2001-229943 (2001-08-01), None
Foley & Lardner LLP
Kalafut Stephen
Mercado Julian
Nissan Motor Co,. Ltd.
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