To miniaturize an electric double-layer capacitor of a power supply device for a vehicle, which includes a secondary battery and the electric double-layer capacitor.
The electric double-layer capacitor includes the secondary battery 10 which feeds power to a load 1 mounted to a vehicle, the electric double-layer capacitor 20 connected to the secondary battery 10 in parallel therewith, a power converter 30 which is interposed between the secondary battery 10 and the electric double-layer capacitor 20, and switched in both directions so as to be chargeable and dischargeable between the secondary battery 10 and the electric double-layer capacitor 20, and a control unit 40 which outputs a charging/discharging switching command of the electric double-layer capacitor 20 to the power converter 30 on the basis of a load current of the load 1 and a capacitor current of the electric double-layer capacitor 20.
COPYRIGHT: (C)2011,JPO&INPIT
Kunihiko Hikari
Tatsushi Miyata
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| WO2009013891A1 |
Masahiro Fujii
Masaaki Iida
Atsushi Sudo
Kei Takeda