Wheel coils and center-tapped longitudinal coils for wireless power transfer
First Claim
1. A wireless power transfer coil structure comprising:
- a wheel core formed from a magnetic material, the wheel core comprising;
an annulus portion having an outer surface and an inner surface; and
at least two spoke portions arranged substantially symmetrically with respect to a geometric center of the annulus portion, wherein each spoke portion of the at least two spoke portions has an end portion that connects to the inner surface of the annulus portion; and
a coil located on the outer surface of the annulus portion of the wheel core.
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Accused Products
Abstract
In one embodiment, a wireless power transfer coil structure comprises a wheel core comprising an annulus portion and at least two spoke portions arranged substantially symmetrically with respect to a geometric center of the annulus portion, the wheel core formed from a magnetic material, and a coil located on an outer surface of the annulus portion of the wheel core. In one embodiment, the wireless power transfer coil structure further comprises at least one solenoidal coil wound around the at least two spoke portions of the wheel core. In one embodiment, the at least one solenoidal coil is wound around one of the at least two spoke portions of the wheel core in a first direction and wound around another of the at least two spoke portions of the wheel core in the first direction. In one embodiment, the at least one solenoidal coil is wound around one of the at least two spoke portions of the wheel core in a first direction and wound around another of the at least two spoke portions of the wheel core in a second direction different from the first direction.
30 Citations
19 Claims
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1. A wireless power transfer coil structure comprising:
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a wheel core formed from a magnetic material, the wheel core comprising; an annulus portion having an outer surface and an inner surface; and at least two spoke portions arranged substantially symmetrically with respect to a geometric center of the annulus portion, wherein each spoke portion of the at least two spoke portions has an end portion that connects to the inner surface of the annulus portion; and a coil located on the outer surface of the annulus portion of the wheel core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 17)
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12. A wireless power transfer coil structure comprising:
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a wheel core being made of a magnetic material comprising; a first annulus portion; a second annulus portion; at least two spoke portions arranged substantially symmetrically with respect to a center of the first annulus portion, wherein each spoke portion of the at least two spoke portions has an end portion that connects to an inner surface of the first annulus portion; at least two spoke portions arranged substantially symmetrically with respect to a center of the second annulus portion, wherein each spoke portion of the at least two spoke portions has an end portion that connects to an inner surface of the second annulus portion; and a first coil located on an outer surface of the first annulus portion of the wheel core; and a second coil located on an outer surface of the second annulus portion of the wheel core. - View Dependent Claims (13, 14, 15, 16, 18, 19)
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Specification