Power coupling device
First Claim
Patent Images
1. An apparatus to deliver a signal from a transmit coil to a device, the apparatus comprising:
- a host object;
a first coil configured to receive a transmit signal from the transmit coil such that a first signal is induced in the first coil;
a second coil connected with the first coil such that the first signal is present in the second coil, wherein the second coil is configured to couple with the device, wherein the device includes an electronic communication device, wherein the first coil is larger in area than the second coil, wherein the first coil is located at a perimeter of the host object, and wherein the first coil and the second coil are configured to charge different electronic communication devices at a same time;
a controller configured to adjust a resonant frequency of the first coil to match a drive frequency of the transmit coil, wherein the controller is incorporated into the host object; and
an indicator incorporated into the host object and configured to indicate that the device is positioned at a specific position with respect to the second coil.
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Accused Products
Abstract
Systems and methods to wirelessly transmit power are provided. A coil assembly is provided. In some examples, the coil assembly is configured to generate a signal in response to an ambient field, and to magnetically couple with a device to deliver power to the device.
52 Citations
29 Claims
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1. An apparatus to deliver a signal from a transmit coil to a device, the apparatus comprising:
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a host object; a first coil configured to receive a transmit signal from the transmit coil such that a first signal is induced in the first coil; a second coil connected with the first coil such that the first signal is present in the second coil, wherein the second coil is configured to couple with the device, wherein the device includes an electronic communication device, wherein the first coil is larger in area than the second coil, wherein the first coil is located at a perimeter of the host object, and wherein the first coil and the second coil are configured to charge different electronic communication devices at a same time; a controller configured to adjust a resonant frequency of the first coil to match a drive frequency of the transmit coil, wherein the controller is incorporated into the host object; and an indicator incorporated into the host object and configured to indicate that the device is positioned at a specific position with respect to the second coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus configured to couple with a transmit coil to deliver a signal to a device, the apparatus comprising:
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a host object; a coil assembly that is attached to the host object, wherein the coil assembly is configured to couple with the transmit coil such that the coil assembly delivers a first signal to the device, wherein the device includes an electronic communication device, wherein the coil assembly includes a receive coil and a coupler coil configured such that the first signal induced in the receive coil is present in the coupler coil, and wherein the receive coil and the coupler coil are configured to deliver power to different electronic communication devices at a same time; a controller configured to change a resonant frequency of the coil assembly to match a drive frequency of the transmit coil, wherein the controller is incorporated into the host object; and an indicator incorporated into the host object and configured to indicate that the device is positioned at a specific position with respect to the coupler coil. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method to wirelessly transfer energy to a device within an apparatus, the method comprising:
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wirelessly receiving a first signal at a first coil, by magnetically coupling the first coil with a transmit coil; inducing a current in the first coil in response to the first signal; converting, at the first coil, the current into a detection signal, by sensing a voltage induced in the first coil through electromagnetic induction; adjusting a reactance associated with the first coil based on the detection signal such that a resonant frequency of the first coil matches a drive frequency of the first signal; providing a state of the apparatus, wherein the state of the apparatus indicates one or more of; whether the first coil is magnetically coupled to the transmit coil, and whether the device is positioned at a specific position with respect to a second coil, wherein the second coil is connected with the first coil such that the current is present in the second coil, and wherein the device includes an electronic communication device; indicating that the device is positioned at the specific position with respect to the second coil based on the state of the apparatus; transferring, by the second coil, the energy to the electronic communication device; and transferring, by the first coil, the energy to another electronic communication device, wherein the energy is transferred to the electronic communication device and the another electronic communication device at a same time. - View Dependent Claims (27, 28, 29)
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Specification