INTEROPERABILITY OF MAGNETIC STRUCTURES FOR INDUCTIVE POWER TRANSFER SYSTEMS
3 Assignments
0 Petitions
Accused Products
Abstract
Inductive power transfer apparatus has a first magnetic coupling structure and a second magnetic coupling structure, the structures being adapted to generate and/or receive magnetic flux to thereby transfer power inductively, the first structure comprising a substantially circular coil, and the second magnetic structure comprising an arrangement of at least two coils associated with a magnetically permeable core.
19 Citations
19 Claims
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1. (canceled)
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2. A loosely coupled inductive transfer apparatus, apparatus comprising:
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a first magnetic coupling structure comprising a magnetically permeable material arranged in a plane and a primary coil arranged in a plane substantially parallel to the plane of the magnetically permeable material, the coil configured to generate a magnetic flux; a second magnetic coupling structure comprising a magnetically permeable material arranged in a plane and a first coil arranged in a plane substantially parallel to the plane of the magnetically permeable material, and a second coil arranged in a plane substantially parallel to the plane of the magnetically permeable material; and the first and second coils being configured to receive a magnetic flux from the first magnetic coupling structure when the second coupling structure is spatially misaligned with the first coupling structure. - View Dependent Claims (3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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5. The apparatus as claimed in claim wherein the coils of the second magnetic structure are arranged to provide coupling tolerance to relative transverse movement between the first and second structures.
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19. A method of inductive power transfer, the method comprising the steps of
generating a magnetic flux using a first structure comprising two coils arranged substantially adjacent to each other and in substantially the same plane, and receiving the magnetic flux from the first structure using a second structure comprising an arrangement of at least three coils, the two coils being located in substantially the same plane and adjacent to each other, and a third coil arranged in spatial quadrature with the two coils.
Specification