Power-Supply Unit
First Claim
1. A power-supply unit comprising:
- a chargeable accumulating means connected to a load circuit;
a fuel cell connected to the accumulating means through a switching circuit; and
a switch-controlling circuit on/off controlling the switching circuit according to how large load current is applied to the load circuit and whether the accumulating means is in a charged state or in a discharged state.
1 Assignment
0 Petitions
Accused Products
Abstract
A power-supply unit includes a chargeable secondary battery 1 connected to a load circuit; a fuel cell 4 connected to the secondary battery 1 through a PchFET 5; and a switch-controlling circuit 6 on/off controlling the PchFET 5 according to how large load current is applied to the load circuit and whether the secondary battery 1 is in a charged state or in a discharged state; thus finely controlling power source supply to the load circuit from the secondary battery 1 and the fuel cell 4. The description is given of the case where positive voltage power source is used with respect to the ground. Even in case of negative voltage, a circuit can be configured on the same principle as the positive voltage.
27 Citations
17 Claims
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1. A power-supply unit comprising:
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a chargeable accumulating means connected to a load circuit;
a fuel cell connected to the accumulating means through a switching circuit; and
a switch-controlling circuit on/off controlling the switching circuit according to how large load current is applied to the load circuit and whether the accumulating means is in a charged state or in a discharged state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification