Power feeding apparatus, transporter and transport system
First Claim
1. A power feeding apparatus, comprising:
- p1 a resonance circuit which includes pickup coils for generating induced electromotive force, and a capacitor;
a rectifier circuit for rectifying the induced electromotive force generated on said resonance circuit;
an output terminal for outputting the output electric power from said rectifier circuit;
an immittance conversion circuit connected between said resonance circuit and said rectifier circuit;
at least one switching element for electrically connecting and disconnecting said output terminal and a terminal at an output side of said rectifier circuit; and
a switching control circuit connected to said pickup coils which detects the output voltage of said resonance circuit and carries out ON/OFF control of said at least one switching element corresponding to the detected voltage.
1 Assignment
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Accused Products
Abstract
In a power feeding apparatus having pickup coils L1 and L2, a rectifier circuit 4 and output terminals U and V, the relays R1 and R2 are connected between the output side terminals of the rectifier circuit 4 and the output terminals U and V. Whereas a protective circuit (switching control circuit) 6, which is connected to the pickup coils L1 and L2 and the relay coils r1 and r2 to obtain the electric power from the output side terminals of the rectifier circuit 4 in order to carry out ON/OFF control of the relays R1 and R2 corresponding to the voltage at the both ends of the pickup coils L1 and L2, is provide. The power feeding apparatus enables to prevent an overcurrent from flowing through a load, to prevent the circuit elements from being destroyed or burnt out due to an overcurrent generated in the pickup coils or an overvoltage generated in a resonance capacitor, to indicate an occurrence of an abnormality and to control the electric power supply by means of a remote control.
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Citations
19 Claims
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1. A power feeding apparatus, comprising:
- p1 a resonance circuit which includes pickup coils for generating induced electromotive force, and a capacitor;
a rectifier circuit for rectifying the induced electromotive force generated on said resonance circuit;
an output terminal for outputting the output electric power from said rectifier circuit;
an immittance conversion circuit connected between said resonance circuit and said rectifier circuit;
at least one switching element for electrically connecting and disconnecting said output terminal and a terminal at an output side of said rectifier circuit; and
a switching control circuit connected to said pickup coils which detects the output voltage of said resonance circuit and carries out ON/OFF control of said at least one switching element corresponding to the detected voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
a feeder line connected to an electric power source for generating induced electromotive force on a pickup; and
a transporter including a power feeding apparatus as set forth in claim 1, and driven by the electric power supplied by said power feeding apparatus.
- p1 a resonance circuit which includes pickup coils for generating induced electromotive force, and a capacitor;
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14. The transport system as set forth in claim 13, further comprising a fuse at a connecting node between said pickup coils and said switching control circuit.
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15. The transport system as set forth in claim 13, wherein said switching control circuit comprises a communication unit.
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16. The transport system as set forth in claim 13, further comprising a temperature sensor connected to said switching control circuit for outputting signals corresponding to the temperature of said pickup coils, wherein said switching control circuit carries out ON/OFF control of said switching element corresponding to the output signals of said temperature sensor.
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17. The transport system as set forth in claim 16, further comprising a fuse at a connecting node between said pickup coils and said switching control circuit.
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18. The transport system as set forth in claim 16, wherein said switching control circuit comprises a communication unit.
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19. A power feeding apparatus, comprising:
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a resonance circuit which includes pickup coils for generating induced electromotive force;
a rectifier circuit for rectifying the induced electromotive force generated on said resonance circuit;
an output terminal for outputting the output electric power from said rectifier circuit;
a constant-voltage circuit connected between said resonance circuit and said rectifier circuit;
a plurality of switching elements for electrically connecting and disconnecting said output terminal and a terminal at an output side of said rectifier circuit; and
a switching control circuit connected to said pickup coils which detects the output voltage of said resonance circuit and carries out ON/OFF control of said plurality of switching elements corresponding to the detected voltage.
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Specification