Inductive power transfer apparatus
First Claim
Patent Images
1. A magnetic flux pad having a front face and a back face for generating or receiving magnetic flux, the pad comprising:
- two pole areas for sending or receiving flux;
a magnetically permeable core magnetically connecting the pole areas;
a coil wound about the core; and
whereby the flux enters the pad at one of the pole areas and exits the pad at the other pole area.
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Abstract
A magnetic flux pad for generating or receiving magnetic flux has two pole areas (11, 12), a permeable core (14) and a coil (16) wound about the core. The pad allows useable flux to be generated at a significant height above a surface of the pad.
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Citations
22 Claims
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1. A magnetic flux pad having a front face and a back face for generating or receiving magnetic flux, the pad comprising:
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two pole areas for sending or receiving flux; a magnetically permeable core magnetically connecting the pole areas; a coil wound about the core; and whereby the flux enters the pad at one of the pole areas and exits the pad at the other pole area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15, 19, 22)
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12. A magnetic flux pad having a front face and a back face for generating a magnetic flux in a space beyond the front face of the pad, the pad comprising:
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two pole areas for sending or receiving flux; a magnetically permeable core magnetically connecting the pole areas; a coil wound about the core; a flux repelling member provided adjacent to a rear face; and whereby the flux enters the pad at one of the pole areas and exits the pad at the other pole area. - View Dependent Claims (20)
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13. An IPT power transfer pad comprising:
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a magnetic flux carrying member having a high magnetic permeability and two ends, each end being substantially adjacent a peripheral edge of the pad; and one or more windings provided about at least a part of the flux carrying member; and wherein said pad is configured such that magnetic flux exits or enters the flux carrying member substantially only at or adjacent to the ends. - View Dependent Claims (21)
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- 14. An IPT system including a first magnetic flux pad or IPT power transfer pad for connection to a power supply and a second magnetic flux pad or IPT power transfer pad for connection to a load, the first and second magnetic flux pads or IPT power pads having one or more windings with a same number of turns, and wherein the number of turns is selected dependent on a required operating frequency.
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17. (canceled)
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18. (canceled)
Specification