Title:
電源装置
Document Type and Number:
Japanese Patent JP4435179
Kind Code:
B2
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.
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Inventors:
Kiyoshi Hanafusa
Hirokazu Ishida
Hirokazu Ishida
Application Number:
JP2006546586A
Publication Date:
March 17, 2010
Filing Date:
December 08, 2004
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02J7/00; G05F1/00; H02J7/34
Domestic Patent References:
| JP2004014160A | ||||
| JP2001346303A | ||||
| JP55088536A | ||||
| JP10271706A |
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune
Hamada Hatsune