Wireless power transmission method and device therefor
AssigneeLG Electronics Inc.
InventorYongcheol Park
Life of this patent
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Abstract
A wireless power transmission method executed by a power transmitter comprising multi-coils, according to one embodiment of the present invention, comprises the steps of: detecting a second power receiver while transmitting power to a first power receiver; determining at least one primary coil adequate for power transmission; by using the determined at least one primary coil, determining whether the second power receiver supports a shared mode protocol; and if the second power receiver supports the shared mode protocol, transmitting power to the first and second power receivers according to the shared mode protocol, wherein the shared mode protocol may be a protocol for simultaneously managing information exchanges between the power transmitter and multiple power receivers.
Claims14
A wireless power transmission method executed by a power transmitter, the method comprising:
- monitoring placement and removal of an object on and from an interface surface of the power transmitter;
- performing digital ping and receiving a response from a power receiver;
- acquiring configuration information of the power receiver and generating a power transfer contract with the power receiver by using the configuration information;
- transmitting power to the power receiver based on the power transfer contract;
- and
- transmitting indication information for initiating communication with the power receiver to the power receiver,
- wherein the indication information includes request information that the power transmitter requests for the power receiver to acquire an authority to transmit a predetermined packet.
A wireless power reception method executed by a power receiver, the method comprising:
- detecting execution of digital ping of a power transmitter and transmitting a response to the detected digital ping;
- transmitting configuration information of the power receiver and establishing a power transfer contract based on the configuration information with the power transmitter;
- receiving power from the power receiver based on the power transfer contract;
- and
- receiving indication information for initiating communication with the power receiver from the power transmitter;
- wherein the indication information includes request information that the power transmitter requests for the power receiver to acquire an authority to transmit a predetermined packet.
A power transmitter comprising:
- a coil assembly including at least one primary coil generating a magnetic field;
- a power conversion unit configured to convert electric energy into a power signal;
- and
- a communications and control unit configured to control communication and power transfer with a power receiver,
- wherein the communications and control unit is further configured to:
- monitor placement and removal of an object on and from an interface surface of the power transmitter,
- perform digital ping and receive a response from the power receiver,
- acquire configuration information of the power receiver and generate a power transfer contract with the power receiver by using configuration information,
- transmit power to the power receiver based on the power transfer contract, and
- transmit indication information for initiating communication with the power receiver to the power receiver,
- wherein the indication information includes request information that the power transmitter requests for the power receiver to acquire an authority to transmit a predetermined packet.
Dependencies are inferred from the claim text.