Method of pairing receiver with wireless charger transmitter
AssigneeNXP USA, Inc.
InventorsLi Wang, Dechang Wang, Dengyu Jiang, Huan Mao
Life of this patent
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Abstract
A wireless charging system (transmitter) has multiple transmit coils that allows for multiple receiver devices (receivers), such as cell phones, to be charged simultaneously. The receivers send data packets that include a receiver ID to the transmitter so that one of the transmitter coils can be paired with a respective one of the receivers. The transmitter can then distinguish between the communications with the receivers using the IDs such that communications with receivers connected with adjacent ones of the transmitter coils do not interfere with each other.
Claims16
A communication method between a wireless charger and a receiver device, wherein the wireless charger includes a plurality of transmitters for simultaneously charging a corresponding plurality of the receiver devices, wherein each transmitter of the plurality of transmitters includes a transmitter coil and a driver, the method comprising:
- the receiver device transmitting a first data packet in response to a power signal from a selected one of the transmitters;
- the receiver device transmitting one or more second data packets, wherein the selected transmitter is configured in accordance with the one or more second data packets to provide charging power to the receiver device;
- and
- the receiver device transmitting a third data packet, wherein the selected transmitter provides and controls the charging power to the receiver device in response to the third data packet;
- wherein at least the third data packet comprises an identifier associated with the receiver device;
- and
- further comprising pairing the selected transmitter with the receiver device by:
- the selected transmitter parsing the third data packet and recognizing that the third data packet includes the identifier;
- the selected transmitter determining that the identifier is a registered identifier of the receiver device;
- the selected transmitter responding to the third data packet in response to the transmitter determining that the identifier is the registered identifier of the receiver device;
- and
- the selected transmitter discarding the third data packet when the transmitter determines that the identifier does not belong to the receiver device.
A communication method between a wireless charger and a receiver device, wherein the wireless charger includes a plurality of transmitters for simultaneously charging a corresponding plurality of the receiver devices, wherein each transmitter of the plurality of transmitters includes a transmitter coil and a driver, the method comprising:
- providing charging power simultaneously from the plurality of transmitter coils of the plurality of transmitters to the corresponding plurality of receiver devices, including;
- sending a power signal by a selected one of the transmitters to a receiver device located next to the selected transmitter;
- the selected transmitter receiving a first data packet from the receiver device in response to the power signal;
- the selected transmitter receiving one or more second packets from the receiver device, wherein the selected transmitter is configured to provide charging power to the receiver device using the one or more second data packets;
- and
- the selected transmitter receiving a third data packet from the receiver device, wherein the selected transmitter uses the third data packet to control the charging power,
- wherein at least the third data packet comprises an identifier associated with the receiver device;
- and
- further comprising pairing the selected transmitter with the receiver device by:
- the selected transmitter parsing the third data packet and recognizing that the third data packet includes the identifier;
- the selected transmitter determining that the identifier is a registered identifier of the receiver device;
- the selected transmitter responding to the third data packet in response to the transmitter determining that the identifier is the registered identifier of the receiver device;
- and
- the selected transmitter discarding the third data packet when the transmitter determines that the identifier does not belong to the receiver device.
A communication method between a wireless charger and a receiver device, wherein the wireless charger includes a plurality of transmitters for simultaneously charging a corresponding plurality of the receiver devices, wherein each transmitter of the plurality of transmitters includes a transmitter coil and a driver, the method comprising:
- providing charging power simultaneously from the plurality of transmitter coils of the plurality of transmitters to the corresponding plurality of receiver devices, including;
- during a power transfer phase, providing charging power from a selected one of the transmitters to a selected one of the receiver devices;
- and
- controlling the charging power by the selected transmitter in response to a control data packet received from the selected receiver device, wherein the control data packet includes an identifier associated with the selected receiver device,
- wherein the identifier is used to pair the selected transmitter with the selected receiver device;
- wherein the selected transmitter receives data packets from one or more of the receiver devices and only processes data packets that include the identifier;
- wherein the selected transmitter discards data packets that do not include the identifier.
Dependencies are inferred from the claim text.