Home-use fuel cell system
First Claim
1. A home-use fuel cell system for supplying power for power demands of a home, the home-use fuel cell system comprising:
- a fuel cell (1) for supplying a base power portion except a short-time peak power portion out of the power demands;
a power storage device (7, 8) having a capacitor (7) and a secondary battery (8), for performing a discharge corresponding to the peak power portion; and
a protection mechanism (11, 12, 15, 18;
20, 21) for protecting the secondary battery (8) so that the discharge depth thereof does not exceed a predetermined value.
1 Assignment
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Accused Products
Abstract
During a time zone where a power demand is smaller than an average value of the entire power demands of homes, an excess portion obtained by subtracting a power demand from a base power portion supplied by PEFC (1) is charged in a capacitor (7) and a lead storage battery (8) in advance; and during a time zone where a power demand is larger than the average value, a peak power portion exceeding this average value is discharged from the capacitor (7) and the lead storage battery (8); thereby enabling the system to sufficiently meet daily home-use demand with requisite minimum equipment while effectively using surplus power. Thus, energy efficiency can be enhanced without wasting energy, and also cost efficiency can be improved.
44 Citations
5 Claims
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1. A home-use fuel cell system for supplying power for power demands of a home, the home-use fuel cell system comprising:
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a fuel cell (1) for supplying a base power portion except a short-time peak power portion out of the power demands;
a power storage device (7, 8) having a capacitor (7) and a secondary battery (8), for performing a discharge corresponding to the peak power portion; and
a protection mechanism (11, 12, 15, 18;
20, 21) for protecting the secondary battery (8) so that the discharge depth thereof does not exceed a predetermined value. - View Dependent Claims (2, 3, 4, 5)
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Specification