Wireless power transmitter and receiver
First Claim
1. A method of wireless power transfer, by a power transmitter transmitting power to a plurality of power receivers, the method comprising:
- a selection phase for detecting each of the plurality of power receivers and sending a digital ping to each of the plurality of power receivers;
an introduction phase for receiving a request from each of the plurality of power receivers for a free slot to send a control information (CI) packet,wherein each of the plurality of power receivers is allocated free slots at a specific location,wherein free slots allocated to different power receivers do not overlap with each other;
a configuration phase for providing a series of locked slots to each of the plurality of power receivers;
a negotiation phase for receiving at least one negotiation data packet from each of the plurality of power receivers using the series of locked slots provided to each of the plurality of power receivers;
a power transfer phase for transmitting power to each of the plurality of power receivers; and
a renegotiation phase for returning to the negotiation phase,wherein the renegotiation phase includes a phase for detecting a change of a charge status of a specific power receiver among the plurality of power receivers when any CI packet is not consecutively received during a predetermined number of free slots allocated to the specific power receiver.
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Accused Products
Abstract
Disclosed is a method of wirelessly transmitting, the method including: a selection phase for detecting each of power receivers and sending a digital ping to the each of power receivers; an introduction phase for receiving a request from the each of power receivers for a free slot; a configuration phase for providing a series of locked slots to the each of power receivers; a negotiation phase for receiving at least one negotiation data packet from the each of power receivers using the series of locked slots; a power transfer phase for transmitting power to the each of power receivers; and a renegotiation phase for returning to the negotiation phase, wherein the renegotiation phase is a phase for returning to the negotiation phase when a change of a charge status of at least one of the each of power receivers to which the power is transmitted is detected.
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Citations
18 Claims
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1. A method of wireless power transfer, by a power transmitter transmitting power to a plurality of power receivers, the method comprising:
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a selection phase for detecting each of the plurality of power receivers and sending a digital ping to each of the plurality of power receivers; an introduction phase for receiving a request from each of the plurality of power receivers for a free slot to send a control information (CI) packet, wherein each of the plurality of power receivers is allocated free slots at a specific location, wherein free slots allocated to different power receivers do not overlap with each other; a configuration phase for providing a series of locked slots to each of the plurality of power receivers; a negotiation phase for receiving at least one negotiation data packet from each of the plurality of power receivers using the series of locked slots provided to each of the plurality of power receivers; a power transfer phase for transmitting power to each of the plurality of power receivers; and a renegotiation phase for returning to the negotiation phase, wherein the renegotiation phase includes a phase for detecting a change of a charge status of a specific power receiver among the plurality of power receivers when any CI packet is not consecutively received during a predetermined number of free slots allocated to the specific power receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power transmitter transmitting power to a plurality of power receivers, comprising:
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a coil assembly comprising at least one primary coil configured to generate a magnetic field; an inverter configured to convert a Direct Current (DC) signal into an Alternating Current (AC) signal; a tank circuit configured to provide impedance matching between the inverter and the at least one primary coil; a communication unit configured to provide communication with a power receiver; and a control unit configured to control power transfer, wherein the power transmitter is configured to; detect each of the plurality of power receivers and send a digital ping to each of the plurality power receivers, receive a request from each of plurality of power receivers for a free slot to send a control information (CI packet), wherein each of the plurality of power receivers is allocated free slots at a specific location, wherein free slots allocated to different power receivers do not overlap with each other, provide a series of locked slots to each of plurality of power receivers, receive at least one negotiation data packet from each of the plurality of power receivers using the series of locked slots provided to each of the plurality of power receivers, and transmit power to each of the plurality of power receivers, detect a change of a charge status of a specific power receiver among, the plurality of power receivers when any CI packet is not consecutively received during a predetermined number of free slots allocated to the specific power receiver, and return to the negotiation phase. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification