Multi-turn coil on metal backplate
First Claim
Patent Images
1. A wireless power transfer apparatus comprising:
- a case configured to house electronic components of an electronic device, the case having an electrically conductive panel portion and side portions along sides of the panel portion, the case defining a non-electrically-conductive portion through at least one of the side portions; and
a coil configured to couple to an externally generated magnetic field, the coil including a plurality of loops each having first segments that span a width of the panel portion of the case and second segments arranged along the side portions of the case and adjacent the non-electrically-conductive portion, the second segments of each of the plurality of loops being displaced a different distance from the panel portion than the first segments of the respective loop;
wherein the panel portion of the case is metallic.
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Abstract
Disclosed is a wireless power transfer apparatus that includes a case for an electronic device. The case may have an electrically conductive panel portion and side portions defined along sides of the panel portion. The case further have at least one opening formed one of the side portions. A coil configured to couple to an externally generated magnetic field may have first segments that span a width of the panel portion of the case and second segments arranged along the side portions of the case and exposed through the at least one opening.
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Citations
31 Claims
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1. A wireless power transfer apparatus comprising:
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a case configured to house electronic components of an electronic device, the case having an electrically conductive panel portion and side portions along sides of the panel portion, the case defining a non-electrically-conductive portion through at least one of the side portions; and a coil configured to couple to an externally generated magnetic field, the coil including a plurality of loops each having first segments that span a width of the panel portion of the case and second segments arranged along the side portions of the case and adjacent the non-electrically-conductive portion, the second segments of each of the plurality of loops being displaced a different distance from the panel portion than the first segments of the respective loop; wherein the panel portion of the case is metallic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for wireless power transfer to electronic components of an electronic device comprising:
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coupling a first segment of each of a plurality of turns of a multi-turn coil to an externally generated magnetic field through a case that houses the electronic components, the first segments each spanning a width of a metallic panel portion of the case; coupling a second segment of each of the plurality of turns of the multi-turn coil to the externally generated magnetic field through a non-electrically-conductive portion of a side portion of the case over a distance from the second segment of a first turn of the plurality of turns to the second segment of a second turn of the plurality of turns; generating power in response to coupling to the externally generated magnetic field; and providing the generated power to the electronic components. - View Dependent Claims (18, 19, 20, 21)
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22. An apparatus for wireless power transfer comprising:
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means for housing electronic components of an electronic device and comprising an electrically-conductive middle panel; and means for coupling to an externally generated magnetic field, the means for coupling including a coil having a plurality of loops with each loop having at least a first segment contained within the means for housing adjacent the electrically-conductive middle panel, spanning a width of the electrically-conductive middle panel, and at least a second segment displaced a different distance from the electrically-conductive middle panel than the first segment and disposed adjacent a non-electrically-conductive portion extending through a side of the means for housing. - View Dependent Claims (23, 24, 25, 26, 27)
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28. A wireless power transfer apparatus comprising:
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a case configured to house electronic components of an electronic device, the case having an electrically conductive panel portion, the panel portion defining a central opening therethrough, the panel portion further defining a gap that extends between an exterior side surface of the panel portion and the central opening through the panel portion; and a coil disposed within and along a perimeter of the central opening defined by the panel portion and configured to couple to an externally generated magnetic field. - View Dependent Claims (29, 30, 31)
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Specification