COIL ARRANGEMENTS IN WIRELESS POWER TRANSFER SYSTEMS FOR LOW ELECTROMAGNETIC EMISSIONS
First Claim
1. An apparatus for wirelessly communicating power, comprising:
- a first conductive structure configured to wirelessly receive power via a magnetic field, the first conductive structure having a length greater than a width, the first conductive structure comprising a first loop and a second loop enclosing a first area and a second area, respectively, the first loop having a first lower surface and the second loop having a second lower surface that are substantially coplanar, the first conductive structure having a first edge and a second edge each intersecting a first geometric line along the length of the first conductive structure; and
a second conductive structure positioned between the first conductive structure and a magnetic material and configured to wirelessly receive power via the magnetic field, the second conductive structure comprising a third loop enclosing a third area, the second conductive structure having a length greater than a width, the length of the second conductive structure being substantially equal to at least a distance along the first geometric line between the first edge and the second edge of the first conductive structure.
2 Assignments
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Accused Products
Abstract
This disclosure provides systems, methods and apparatus for wireless power transfer. In one aspect the disclosure provides an apparatus for wirelessly communicating power. The apparatus includes a first conductive structure, with a length greater than a width, configured to wirelessly receive power via a magnetic field. The first conductive structure includes two substantially co-planar loops. The first conductive structure has a first edge and a second edge each intersecting a geometric line along the length of the first conductive structure. The apparatus further includes a second conductive structure, with a length greater than width, positioned between the first conductive structure and a magnetic material and configured to wirelessly receive power via the magnetic field. The length of the second conductive structure is substantially equal to at least a distance along the geometric line between the first edge and the second edge of the first conductive structure.
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Citations
52 Claims
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1. An apparatus for wirelessly communicating power, comprising:
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a first conductive structure configured to wirelessly receive power via a magnetic field, the first conductive structure having a length greater than a width, the first conductive structure comprising a first loop and a second loop enclosing a first area and a second area, respectively, the first loop having a first lower surface and the second loop having a second lower surface that are substantially coplanar, the first conductive structure having a first edge and a second edge each intersecting a first geometric line along the length of the first conductive structure; and a second conductive structure positioned between the first conductive structure and a magnetic material and configured to wirelessly receive power via the magnetic field, the second conductive structure comprising a third loop enclosing a third area, the second conductive structure having a length greater than a width, the length of the second conductive structure being substantially equal to at least a distance along the first geometric line between the first edge and the second edge of the first conductive structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of wirelessly communicating power comprising:
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wirelessly receiving power via a first conductive structure via a magnetic field, the first conductive structure having a length greater than a width, the first conductive structure comprising a first loop and a second loop enclosing a first area and a second area, respectively, the first loop having a first lower surface and the second loop having a second lower surface that are substantially coplanar, the first conductive structure having a first edge and a second edge each intersecting a geometric line along the length of the first conductive structure; and wirelessly receiving power via a second conductive structure positioned between the first conductive structure and a magnetic material, the second conductive structure enclosing a third area, the second conductive structure having a length greater than a width, the length of the second conductive structure being substantially equal to at least a distance along the geometric line between the first edge and the second edge of the first conductive structure. - View Dependent Claims (19, 20, 21, 22)
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23. An apparatus for wirelessly communicating power, comprising:
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a first means for wirelessly receiving power via a magnetic field, the first receiving means having a length greater than a width, the first receiving means comprising a first loop and a second loop enclosing a first area and a second area, respectively, the first loop having a first lower surface and the second loop having a second lower surface that are substantially coplanar, the first receiving means having a first edge and a second edge each intersecting a geometric line along the length of the first receiving means; and a second means for wirelessly receiving power via the magnetic field positioned between the first receiving means and a magnetic material, the second receiving means enclosing a third area, the second receiving means having a length greater than a width, the length of the second receiving means being substantially equal to at least a distance along the geometric line between the first edge and the second edge of the first receiving means. - View Dependent Claims (24, 25, 26, 27)
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28. An apparatus for wirelessly communicating power comprising:
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a transmit circuit configured to output a time-varying signal; and a conductive structure configured to receive the time-varying signal and to generate an electromagnetic field at a level sufficient to wirelessly transfer power for powering or charging a receiver device, the conductive structure having a rectangular form factor having a width a and a length a+b, and wherein a divided by b is substantially equal to a+b divided by a. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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36. A method of wirelessly communicating power comprising:
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outputting a time-varying signal from a transmit circuit; and receiving the time-varying signal and generating, at a conductive structure, an electromagnetic field at a level sufficient to wirelessly transfer power for powering or charging a receiver device, the conductive structure having a rectangular form factor having a width a and a length a+b, and wherein a divided by b is substantially equal to a+b divided by a. - View Dependent Claims (37, 38)
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39. An apparatus of wirelessly communicating power comprising:
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means for outputting a time-varying signal; and means for generating an electromagnetic field based on the time-varying signal, the electromagnetic field at a level sufficient to wirelessly transfer power for powering or charging a receiver device, the generating means having a rectangular form factor having a width a and a length a+b, and wherein a divided by b is substantially equal to a+b divided by a. - View Dependent Claims (40, 41, 42)
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43. An apparatus for wirelessly communicating power, comprising:
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a first conductive structure configured to wirelessly transmit or receive power via a first electromagnetic field at a level sufficient to power or charge a load, the first conductive structure comprising a first loop enclosing a first area; and a second conductive structure configured to wirelessly transmit or receive power via a second electromagnetic field at a level sufficient to power or charge the load, the second conductive structure positioned inside the first area and substantially co-planar with the first conductive structure, the second conductive structure comprising a second loop and a third loop enclosing a second area and a third area, respectively, the second loop having a second lower surface and the third loop having a third lower surface that are substantially coplanar. - View Dependent Claims (44, 45, 46)
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47. A method of wirelessly communicating power, comprising:
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wirelessly transmitting or receiving power, at a first conductive structure, via a first electromagnetic field at a level sufficient to power or charge a load, the first conductive structure comprising a first loop enclosing a first area; and wirelessly transmitting or receiving power, at a second conductive structure, via a second electromagnetic field at a level sufficient to power or charge the load, the second conductive structure positioned inside the first area and substantially co-planar with the first conductive structure, the second conductive structure comprising a second loop and a third loop enclosing a second area and a third area, respectively, the second loop having a second lower surface and the third loop having a third lower surface that are substantially coplanar. - View Dependent Claims (48, 49)
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50. An apparatus for wirelessly communicating power, comprising:
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a first means for wirelessly transmitting or receiving power via a first electromagnetic field at a level sufficient to power or charge a load, the first means comprising a first loop enclosing a first area; and a second means for wirelessly transmitting or receiving power via a second electromagnetic field at a level sufficient to power or charge the load, the second means positioned inside the first area and substantially co-planar with the first means, the second means comprising a second loop and a third loop enclosing a second area and a third area, respectively, the second loop having a second lower surface and the third loop having a third lower surface that are substantially coplanar. - View Dependent Claims (51, 52)
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Specification