Method for transferring wireless power
First Claim
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1. A method of controlling a multi-device wireless power charger (MWPC) to wirelessly transfer power to a plurality of receivers, the method comprising:
- initializing power transfer service to the receivers;
associating the MWPC with the receivers by transmitting a plurality of connection requests to the receivers at the same time, and receiving at least one response from the receivers, respectively, in response to the connection requests, wherein the at least one response comprises an identifier(ID) identifying a corresponding receiver among the receivers; and
wirelessly transferring the power from the MWPC to at least one of the receivers based on a result of the associating so that the receiver is charged by the transferred power,wherein the ID comprises at least one from among an address, a communication port (COM) ID, a wireless power transfer (WPD) ID of the receiver.
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Abstract
This invention defines management protocols for wireless power transfer to multiple devices in Multi-device Wireless Power Management System. Various functions of Multi-device Wireless Power Management System are justified from this invention. The WPT frames and messages which work between the management block of a charger and the management block or the coupler block of a device, or the coupler block of a charger are defined as well to execute various functions. Also the procedures for each functionality are described based on its frames and messages.
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Citations
15 Claims
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1. A method of controlling a multi-device wireless power charger (MWPC) to wirelessly transfer power to a plurality of receivers, the method comprising:
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initializing power transfer service to the receivers; associating the MWPC with the receivers by transmitting a plurality of connection requests to the receivers at the same time, and receiving at least one response from the receivers, respectively, in response to the connection requests, wherein the at least one response comprises an identifier(ID) identifying a corresponding receiver among the receivers; and wirelessly transferring the power from the MWPC to at least one of the receivers based on a result of the associating so that the receiver is charged by the transferred power, wherein the ID comprises at least one from among an address, a communication port (COM) ID, a wireless power transfer (WPD) ID of the receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of controlling a multi-device wireless power charger (MWPC) to wirelessly transfer power to a plurality of receivers, the method comprising:
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initializing power transfer service to the receivers; associating the MWPC with the receivers by transmitting a plurality of connection requests to the receivers at the same time, and receiving at least one response from the receivers, respectively, in response to the connection requests, wherein the at least one response comprises an identifier(ID) identifying a corresponding receiver among the receivers; and wirelessly transferring the power from the MWPC to at least one of the receivers based on a result of the associating so that the receiver is charged by the transferred power, wherein the wirelessly transferring the power to the receivers comprises; dividing a power transfer period into a plurality of time slots, allocating each of the time slots to each of the receivers to maximize power transfer efficiency, and informing a power transfer schedule to the receivers regarding when to turn on and off respective coupler antennas of the receivers.
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15. A method of controlling a receiver to wirelessly receive power transfer, the method comprising:
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searching for a wireless power charger to wirelessly transfer power to the receiver by transmitting a connection request signal; associating the wireless power charger with the receiver by receiving an identifier identifying the receiver in response to the connection request signal; transmitting a request for power supply to at least one device which is configured to be wirelessly charged by the wireless power charger and uses a same type of wireless power transfer as the receiver, if the connection request signal is not responded; wirelessly receiving power transfer if the request is approved by the device, wherein the ID comprises at least one from among an address, a communication port (COM) ID, a wireless power transfer (WPD) ID of the receiver.
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Specification