Inductive power transfer apparatus
First Claim
Patent Images
1. A magnetic flux pad for generating or receiving magnetic flux, the pad having a front face and a back face and comprising:
- a magnetically permeable material having two ends from which magnetic flux is directed into an area beyond the front face of the pad;
two separated solenoidal windings connected magnetically in series and magnetically associated with the permeable material; and
a magnetic flux repelling member adjacent to the back face.
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Accused Products
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.
8 Citations
23 Claims
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1. A magnetic flux pad for generating or receiving magnetic flux, the pad having a front face and a back face and comprising:
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a magnetically permeable material having two ends from which magnetic flux is directed into an area beyond the front face of the pad; two separated solenoidal windings connected magnetically in series and magnetically associated with the permeable material; and a magnetic flux repelling member adjacent to the back face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. 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 winding magnetically associated with the core; a flux repelling member provided adjacent to a rear face; and wherein each pole area includes a plurality of fingers. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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- 22. 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.
Specification