Wireless power transfer through a metal object
First Claim
1. An apparatus for wirelessly receiving power via a magnetic field, the apparatus comprising:
- a metal cover that forms at least a portion of a housing, the metal cover comprising a first metal portion and a second metal portion that is electrically isolated from the first metal portion by at least one slot that is disposed between the first metal portion and the second metal portion and surrounds an entire perimeter of the second metal portion, the first metal portion forming a loop around a perimeter of the cover and entirely surrounding the second metal portion and the first metal portion configured to inductively couple power via the magnetic field, the magnetic field inducing a current in the first metal portion; and
a receive circuit electrically coupled to the first metal portion, housed within the housing, and configured to receive the current from the first metal portion and charge or power a load based on the current.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and system for providing wireless power transfer through a metal object is provided. In one aspect, an apparatus for wirelessly receiving power via a magnetic field is provided. The apparatus includes a metal cover including an inner portion and an outer portion. The outer portion is configured to form a loop around the inner portion of the metal cover. The outer portion is configured to inductively couple power via the magnetic field. The apparatus includes a receive circuit electrically coupled to the outer portion and configured to receive a current from the outer portion generated in response to the magnetic field. The receive circuit is configured to charge or power a load based on the current.
15 Citations
33 Claims
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1. An apparatus for wirelessly receiving power via a magnetic field, the apparatus comprising:
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a metal cover that forms at least a portion of a housing, the metal cover comprising a first metal portion and a second metal portion that is electrically isolated from the first metal portion by at least one slot that is disposed between the first metal portion and the second metal portion and surrounds an entire perimeter of the second metal portion, the first metal portion forming a loop around a perimeter of the cover and entirely surrounding the second metal portion and the first metal portion configured to inductively couple power via the magnetic field, the magnetic field inducing a current in the first metal portion; and a receive circuit electrically coupled to the first metal portion, housed within the housing, and configured to receive the current from the first metal portion and charge or power a load based on the current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for wirelessly receiving power via a magnetic field, the method comprising:
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wirelessly receiving power via a metal cover that forms at least a portion of a housing, the metal cover comprising a first metal portion and a second metal portion that is electrically isolated from the first metal portion by at least one slot that is disposed between the first metal portion and the second metal portion and surrounds an entire perimeter of the second metal portion, the first metal portion forming a loop around a perimeter of the cover and entirely surrounding the second metal portion, the first metal portion configured to inductively couple power via the magnetic field, the magnetic field inducing a current in the first metal portion; and powering or charging a load based on the received power via a receive circuit housed within the housing. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An apparatus for receiving wireless power from a magnetic field, comprising:
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conducting means for partially housing a portable electronic device, the conducting means comprising conducting means for inductively coupling power via the magnetic field and conducting means for grounding that is electrically isolated from the inductively coupling power conductive means by at least one means for dividing that is disposed between the conducting means for inductively coupling power and the conducting means for grounding and surrounds an entire perimeter of the conductive means for grounding, the inductively coupling power conductive means forming a loop around a perimeter of the housing means and entirely surrounding the conductive grounding means , the magnetic field inducing a current in the inductively coupling power conductive means; and means for powering or charging a load based on power received via the inductively coupling power conductive means, the powering or charging means housed within the housing means.
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31. An apparatus for wirelessly receiving power, the apparatus comprising:
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a housing portion configured to form a back of a portable electronic device, the housing portion having a first dimension, the housing portion comprising; a metal portion having a second dimension the same size as or having a size that covers a majority of the first dimension of the housing portion and divided into a first metal portion and a second metal portion that is electrically isolated from the first metal portion by at least one slot that is disposed between the first metal portion and the second metal portion and surrounds an entire perimeter of the second metal portion, the first metal portion forming a loop around a perimeter of the second metal portion and entirely surrounding the second metal portion, the first metal portion configured to inductively couple power via a magnetic field at a level sufficient for charging or powering a load of the portable electronic device; and an electrical connection electrically coupled to the first metal portion of the metal portion and configured to provide received power to the portable electronic device. - View Dependent Claims (32, 33)
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Specification