Interoperability of magnetic structures for inductive power transfer systems
First Claim
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1. A loosely coupled inductive power transfer apparatus, the apparatus comprising:
- a first magnetic coupling structure arranged in a plane and a primary coil having at least one turn and arranged in a plane substantially parallel to the plane of the ferrite structure, the coil configured to generate a magnetic flux;
a second magnetic coupling structure comprising a first coil arranged to be responsive to a component of the magnetic flux from the first magnetic coupling structure that is perpendicular to the plane of the primary coil and a second coil arranged to be responsive to a component of the magnetic flux from the first magnetic coupling structure that is parallel to the plane of the primary coil; and
an electrical circuit configured to sum and regulate outputs from the first and second coils to provide a required power profile over a range of relative transverse movement between the first and second magnetic coupling structures.
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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.
17 Citations
18 Claims
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1. A loosely coupled inductive power transfer apparatus, the apparatus comprising:
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a first magnetic coupling structure arranged in a plane and a primary coil having at least one turn and arranged in a plane substantially parallel to the plane of the ferrite structure, the coil configured to generate a magnetic flux; a second magnetic coupling structure comprising a first coil arranged to be responsive to a component of the magnetic flux from the first magnetic coupling structure that is perpendicular to the plane of the primary coil and a second coil arranged to be responsive to a component of the magnetic flux from the first magnetic coupling structure that is parallel to the plane of the primary coil; and an electrical circuit configured to sum and regulate outputs from the first and second coils to provide a required power profile over a range of relative transverse movement between the first and second magnetic coupling structures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of inductively transferring power, the method comprising:
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generating magnetic flux via a first magnetic coupling structure comprising a first magnetic coupling structure comprising a ferrite structure arranged in a plane and a primary coil having at least one turn and arranged in a plane substantially parallel to the plane of the ferrite structure; receiving magnetic flux via a first coil of a second magnetic coupling structure, the first coil arranged to be responsive to a component of the magnetic flux from the first magnetic coupling structure that is perpendicular to the plane of the primary coil; receiving magnetic flux via a second coil of the second magnetic coupling structure, the second coil arranged to be responsive to a component of the magnetic flux from the first magnetic coupling structure that is parallel to the plane of the primary coil; and summing and regulating output from the first and second coils to provide a required electrical circuit configured to sum and regulate outputs from the first and second coils to provide a required power profile over a range of relative transverse movement between the first and second magnetic coupling structures. - View Dependent Claims (17, 18)
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Specification