To provide a power supply device and a power supply system for a fuel cell vehicle, reducing cost required for configuration and reducing the size.
The power supply device 10 includes: a first line L1, a second line L2, and a third line L3, each having a different electric potential from one another; a battery circuit 10a in which a fuel cell stack 11 and a battery 12 are connected in series; and a first DC-DC converter 13. Both ends of the battery circuit 10a are connected to the first line L1 and the third line L3, a connection point between the fuel cell stack 11 of the battery circuit 10a and the battery 12 is connected to the second line L2, a primary side of the first DC-DC converter 13 is connected to the second line L2 and the third line L3, a secondary side of the first DC-DC converter 13 is connected to the first line L1 and the third line L3, and electric power is output from the first line L1 and the third line L3.
COPYRIGHT: (C)2010,JPO&INPIT
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Tadashi Takahashi
Yoshifumi Saeki
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama