MULTIPLE COIL FLUX PAD
First Claim
Patent Images
1. A magnetic flux pad for generating or receiving magnetic flux, the pad comprising:
- at least three coils positioned such that the windings thereof are in substantially the same plane; and
a power supply or pickup controller operable to selectively conduct with two or more of the coils such that a magnetic field is produced or power is received by at least one of a plurality of pairs of the at least three coils.
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Abstract
The present invention provides a magnetic flux pad for generating or receiving magnetic flux, comprising at least three coils positioned such that the windings thereof are in substantially the same plane, and a power supply or pickup controller operable to selectively energise or receive power from two or more of the coils such that a magnetic field is produced or received by at least one of a plurality of pairs of the at least three coils. In preferred embodiments, the three or more coils are substantially mutually decoupled, overlapping, and/or equidistantly spaced from one another.
79 Citations
31 Claims
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1. A magnetic flux pad for generating or receiving magnetic flux, the pad comprising:
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at least three coils positioned such that the windings thereof are in substantially the same plane; and a power supply or pickup controller operable to selectively conduct with two or more of the coils such that a magnetic field is produced or power is received by at least one of a plurality of pairs of the at least three coils. - View Dependent Claims (2, 3, 4, 5, 9, 10, 11, 12, 13)
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6-8. -8. (canceled)
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14-15. -15. (canceled)
- 16. A magnetic flux pad for generating magnetic flux, the magnetic flux pad being configured to be operable in a plurality of modes so as to control the magnetic flux generated thereby, and comprising three or more coils capable of being selectively energised to enable said control to be effected.
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17-19. -19. (canceled)
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21-22. -22. (canceled)
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24. A power supply apparatus for an inductive power transfer system, the power supply apparatus comprising:
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a magnetic flux pad for generating magnetic flux, comprising at least three coils positioned such that the windings thereof are in substantially the same plane; and a power supply adapted to provide a current in one coil which has a different phase to a current in the other coils. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31-36. -36. (canceled)
Specification