NFC assisted wireless charging
First Claim
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1. A system comprising:
- a charging apparatus having a controller and a plurality of power transmitters with respective transmitter coils,wherein the controller is configured to initiate authentication of a device by communicating with the device via a first electromagnetic field, the device having a device coil;
wherein the transmitter, in response to the authentication, is configured to transmit power from the respective transmitter coils to the device coil via a second electromagnetic field different from the first electromagnetic field so long as an individual resonance is detected for each of the respective transmitter coils; and
wherein the controller, in response to a predefined trigger event set by a user and at least one of the detected individual resonances, is configured to instruct at least one of the plurality of power transmitters to limit power transmission without limiting transmission of the other of the plurality of power transmitters.
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Abstract
A charging system may include a charging apparatus having a controller and a power transmitter. The controller may be configured to initiate authentication of a device by communicating with the device via a first electromagnetic field. The transmitter, in response to the authentication, may be configured to transmit power to the device via a second electromagnetic field.
26 Citations
20 Claims
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1. A system comprising:
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a charging apparatus having a controller and a plurality of power transmitters with respective transmitter coils, wherein the controller is configured to initiate authentication of a device by communicating with the device via a first electromagnetic field, the device having a device coil; wherein the transmitter, in response to the authentication, is configured to transmit power from the respective transmitter coils to the device coil via a second electromagnetic field different from the first electromagnetic field so long as an individual resonance is detected for each of the respective transmitter coils; and wherein the controller, in response to a predefined trigger event set by a user and at least one of the detected individual resonances, is configured to instruct at least one of the plurality of power transmitters to limit power transmission without limiting transmission of the other of the plurality of power transmitters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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emitting a first electromagnetic field at a charging apparatus within a secure channel; receiving device information on the secure channel; authenticating a device associated with the device information, the device having a device coil; instructing, in response to the authentication, a plurality of power transmitters having respective transmitter coils to emit to the device coil a second electromagnetic field distinct from the first electromagnetic field for charging the device so long as an individual resonance is detected for each of the respective transmitter coils; and instructing, in response to a predefined trigger event set by a user and at least one of the detected individual resonances, at least one of the plurality of power transmitters to limit power transmission without limiting transmission of the other of the plurality of power transmitters. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A non-transitory computer-readable medium tangibly embodying computer-executable instructions comprising:
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instructing a charging apparatus to emit a first electromagnetic field at a charging apparatus within a secure channel; receiving device information on the secure channel; authenticating a device associated with the device information, the device having a device coil; instructing, in response to the authentication, a plurality of power transmitters having respective transmitter coils to emit a second electromagnetic field distinct from the first electromagnetic field for charging the device so long as an individual resonance is detected for each of the respective transmitter coils; and instructing, in response to a predefined time limit set by a user and at least one of the detected individual resonances, at least one of the plurality of power transmitters to limit power transmission without limiting transmission of the other of the plurality of power transmitters. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification