Wireless charging of metal backed electronic devices
First Claim
1. An apparatus for wirelessly receiving power from a transmitter, comprising:
- a metal portion comprising a recessed channel extending substantially around a portion of the metal portion; and
a receive circuit configured to inductively couple power via a magnetic field generated by the transmitter to power or charge a load electrically coupled to the receive circuit, the receive circuit comprising at least one conductor placed within the recessed channel, the at least one conductor configured to form a loop substantially around the portion of the metal portion.
1 Assignment
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Accused Products
Abstract
A method and system for providing wireless power transfer through a metal object by forming a loop conductor from the metal object through a feature or component embedded within the metal object and by replacing portions of the metal object with insulating components. The method and system utilize a recessed channel to install and isolate conductors that are connected to transmitter or receiver circuits and enable wireless power transfer and other communications. The recessed channel creates a loop around at least a portion of the metal object such that the conductor installed therein may form a loop conductor, which may be connected to a source or sink. In some implementations, a logo embedded within the metal object may create a loop formed by the metal object with a current path around the logo, wherein the metal object itself may be configured to operate as the conductor.
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Citations
33 Claims
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1. An apparatus for wirelessly receiving power from a transmitter, comprising:
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a metal portion comprising a recessed channel extending substantially around a portion of the metal portion; and a receive circuit configured to inductively couple power via a magnetic field generated by the transmitter to power or charge a load electrically coupled to the receive circuit, the receive circuit comprising at least one conductor placed within the recessed channel, the at least one conductor configured to form a loop substantially around the portion of the metal portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for wirelessly receiving power from a transmitter, comprising:
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a receive circuit comprising a metal portion forming a first portion of a casing, the receive circuit configured to inductively couple power via a magnetic field generated by the transmitter to power or charge a load electrically coupled to the receive circuit; and a non-conductive portion forming a second portion of the casing, the non-conductive portion comprising; a slot having a first end and a second end, and a graphic or textual representation, wherein the first end extends to an edge of the metal portion and the second end connects to the graphic or textual representation. - View Dependent Claims (13, 14, 15, 16, 17)
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18. An apparatus for wirelessly receiving power from a transmitter, comprising:
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a receive circuit comprising; a metal portion of a casing, and a non-conductive portion of the casing, wherein the receive circuit is configured to inductively couple power via a magnetic field generated by the transmitter to power or charge a load electrically coupled to the receive circuit, wherein the metal portion forms a graphic or textual representation, in the non-conductive portion of the casing, that defines a path through which an electrical current flows, wherein the electrical current is generated within a portion of the graphic or textual representation in response to a voltage induced by the magnetic field generated by the transmitter. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A method for wirelessly receiving power at an apparatus from a transmitter, comprising:
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inductively coupling power via a magnetic field generated by the transmitter via a receive circuit comprising at least one conductor placed within a recessed channel extending substantially around a portion of a metal portion of the apparatus, the at least one conductor configured to form a loop substantially around the portion of the metal portion; and powering or charging a load of the apparatus using the inductively coupled power. - View Dependent Claims (27, 28, 29, 30)
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31. A method for wirelessly receiving, at an apparatus, power from a transmitter, comprising:
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inductively coupling power via a magnetic field generated by the transmitter using a receive circuit comprising a metal portion forming a first portion of a casing, the metal portion integrated with a non-conductive portion forming a second portion of the casing, the non-conductive portion comprising a slot having a first end and a second end and a graphic or textual representation, wherein the first end extends to an edge of the metal portion and the second end connects to the graphic or textual representation; and powering or charging a load coupled to the receive circuit. - View Dependent Claims (32, 33)
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Specification