Power supply unit and electric vehicle incorporating the same
First Claim
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1. A power supply unit comprising:
- a capacitor unit for supplying electric power to a load, said capacitor unit having at least two blocks each having a plurality of electric double-layer capacitors connected in series;
a selector switch for changing over a manner of connection of said at least two blocks between series connection and parallel connection in dependence on an output required by said load; and
a switching regulator connected to said capacitor unit.
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Abstract
A power supply unit has a capacitor unit for supplying electric power to a load. The capacitor unit has at least two blocks each having a plurality of electric double-layer capacitors connected in series. The manner of connection of the at least two blocks is changed over between series connection and parallel connection in dependence on an output required by the load. A switching regulator is connected to the electric charge-storing device. An electric vehicle having the power supply unit installed thereon is also provided.
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Citations
9 Claims
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1. A power supply unit comprising:
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a capacitor unit for supplying electric power to a load, said capacitor unit having at least two blocks each having a plurality of electric double-layer capacitors connected in series; a selector switch for changing over a manner of connection of said at least two blocks between series connection and parallel connection in dependence on an output required by said load; and a switching regulator connected to said capacitor unit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electric vehicle comprising:
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power supply unit for supplying electric power to a load, said power supply having at least two blocks each having a plurality of electric double-layer capacitors connected in series, a selector switch for changing over a manner of connection of said at least two blocks between series connection and parallel connection, and an electric motor as said load to which said power supply unit supplies said electric power; operating condition-detecting means for detecting operating conditions of said automotive vehicle; and a management ECU for causing said selector switch to change over said manner of connection of said at least two blocks between said series connection and said parallel connection based on said operating conditions of said electric vehicle detected by said operating condition-detecting means. - View Dependent Claims (8)
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9. A power supply unit comprising:
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a capacitor unit for supplying electric power to a load, said capacitor unit having a plurality of electric double-layer capacitors connected in series; and a switching regulator connected to said capacitor unit, said switching regulator including a smoothing circuit for smoothing ripples in an output voltage of said power supply unit, which is caused by switching operation of said switching regulator.
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Specification