ORIENTATION-INDEPENDENT WIRELESS CHARGING
First Claim
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1. A method for orientation-independent, wireless charging of a device comprising:
- a. generating a rotating magnetic field, within a three-dimensional charging space, by using a first transmitter configured to transmit a first signal having a first frequency and a first amplitude, a second transmitter configured to transmit a second signal having a second frequency and a second amplitude, and a third transmitter configured to transmit a third signal having a third frequency and a third amplitude; and
wherein the first frequency, the second frequency, and the third frequency are equal, and wherein the first amplitude, the second amplitude, and the third amplitude vary at the same frequency; and
wherein the first frequency has a phase difference of 90 degrees with respect to the second frequency and the third frequency; and
wherein the third amplitude has a phase difference of 90 degrees with respect to the first amplitude and the second amplitude; and
b. inducing, by the rotating magnetic field, an electric current in at least one receiver within the three-dimensional charging space;
wherein the electric current that is induced in the receiver provides power wirelessly to the device, independent of the orientation of the device, relative to the rotating magnetic field.
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Abstract
Methods are provided herein for orientation-independent, wireless charging of devices. The methods disclosed herein comprise transmitters and at least one receiver to transmit power wirelessly. The methods described herein comprise generating rotating magnetic fields to induce an electric current in a device.
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Citations
20 Claims
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1. A method for orientation-independent, wireless charging of a device comprising:
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a. generating a rotating magnetic field, within a three-dimensional charging space, by using a first transmitter configured to transmit a first signal having a first frequency and a first amplitude, a second transmitter configured to transmit a second signal having a second frequency and a second amplitude, and a third transmitter configured to transmit a third signal having a third frequency and a third amplitude; and wherein the first frequency, the second frequency, and the third frequency are equal, and wherein the first amplitude, the second amplitude, and the third amplitude vary at the same frequency; and wherein the first frequency has a phase difference of 90 degrees with respect to the second frequency and the third frequency; and wherein the third amplitude has a phase difference of 90 degrees with respect to the first amplitude and the second amplitude; and b. inducing, by the rotating magnetic field, an electric current in at least one receiver within the three-dimensional charging space; wherein the electric current that is induced in the receiver provides power wirelessly to the device, independent of the orientation of the device, relative to the rotating magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification