Wireless power reception device, wireless power transmission device, and communication method between wireless power transmission device and wireless power reception device

Patent metadata

Field	Value
Publication number	US-12388299-B2
Application number	US-202118014330-A
Country	US
Kind code	B2
Filing date	Jul 5, 2021
Priority date	Jul 3, 2020
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

A wireless power reception device according to one embodiment of the present specification uses Bluetooth communication and/or in-band communication using an operating frequency of the wireless power, so as to communicate with a wireless power transmission device and control the reception of wireless power, and exchanges an application level message with the wireless power transmission device by using a data transmission stream that includes an auxiliary data control data packet (ADC) and an auxiliary data transport data packet (ADT), wherein the ADT includes a header and a message field, and the message field includes a data field including at least a part of the application level message and a length field including information related to the size of the data field.

First claim

What is claimed is:

1. A wireless power receiver, which receives a wireless power from a wireless power transmitter, comprising:
a power pickup configured to receive the wireless power from the wireless power transmitter by magnetic coupling with the wireless power transmitter at an operating frequency; and
a controller configured to communicate with the wireless power transmitter using at least one of in-band communication and Bluetooth communication using the operating frequency and control the reception of the wireless power,
wherein the controller is configured to:
exchange an application level message with the wireless power transmitter using a data transport stream including an Auxiliary Data Control data packet (ADC) and an Auxiliary Data Transport data packet (ADT),
wherein the ADT includes a header and a message field, and
wherein the message field includes a data field including at least a part of the application level message and a length field including information related to a size of the data field.

2. The wireless power receiver of claim 1 , wherein a specific value indicating that the size of the data field is variable exists among values of the header,
wherein the ADT includes the length field only when the specific value is included in the header.

3. The wireless power receiver of claim 2 , wherein, when the header includes the specific value, the data field includes 1 to 255 bytes of data.

4. The wireless power receiver of claim 1 , wherein the ADT includes:
a first ADT including a value indicating that the size of the data field is variable in the header and including the data field and the length field in the message field, and
a second ADT including a value indicating the size of the data field in the header and including the data field in the message field.

5. The wireless power receiver of claim 1 , wherein the ADC and the ADT are included in a Bluetooth packet used in the Bluetooth communication and are transmitted or received through the Bluetooth communication.

6. The wireless power receiver of claim 5 , wherein the ADC includes a first ADC indicating open of the data transport stream and a second ADC indicating an end of the data transport stream,
wherein the data transport stream includes the first ADC, at least one of the ADT and the second ADC,
wherein the Bluetooth packet includes at least a portion of the first ADC, at least one of the ADT, and the second ADC.

7. A wireless power transmitter, which transmits a wireless power to a wireless power receiver, comprising:
a power converter configured to transmit the wireless power to the wireless power receiver by magnetic coupling with the wireless power receiver at an operating frequency; and
a controller configured to communicate with the wireless power receiver using at least one of in-band communication and Bluetooth communication using the operating frequency and control the transmission of the wireless power,
wherein the controller is configured to:
exchange an application level message with the wireless power receiver using a data transport stream including an Auxiliary Data Control data packet (ADC) and an Auxiliary Data Transport data packet (ADT),
wherein the ADT includes a header and a message field, and
wherein the message field includes a data field including at least a part of the application level message and a length field including information related to a size of the data field.

8. The wireless power transmitter of claim 7 , wherein a specific value indicating that the size of the data field is variable exists among values of the header,
wherein the ADT includes the length field only when the specific value is included in the header.

9. The wireless power transmitter of claim 8 , wherein, when the header includes the specific value, the data field includes 1 to 255 bytes of data.

10. The wireless power transmitter of claim 7 , wherein the ADT includes:
a first ADT including a value indicating that the size of the data field is variable in the header and including the data field and the length field in the message field, and
a second ADT including a value indicating the size of the data field in the header and including the data field in the message field.

11. The wireless power transmitter of claim 7 , wherein the ADC and the ADT are included in a Bluetooth packet used in the Bluetooth communication and are transmitted or received through the Bluetooth communication.

12. The wireless power transmitter of claim 11 , wherein the ADC includes a first ADC indicating open of the data transport stream and a second ADC indicating an end of the data transport stream,
wherein the data transport stream includes the first ADC, at least one of the ADT and the second ADC,
wherein the Bluetooth packet includes at least a portion of the first ADC, at least one of the ADT, and the second ADC.

13. A method for communication between a wireless power transmitter for transmitting wireless power and a wireless power receiver for receiving the wireless power, comprising:
communicating, by the wireless power receiver and the wireless power transmitter, using at least one of in-band communication and Bluetooth communication using an operating frequency of the wireless power,
exchanging an application level message using a data transport stream including an Auxiliary Data Control data packet (ADC) and an Auxiliary Data Transport data packet (ADT),
wherein the ADT includes a header and a message field, and
wherein the message field includes a data field including at least a part of the application level message and a length field including information related to a size of the data field.

14. The method of claim 13 , wherein a specific value indicating that the size of the data field is variable exists among values of the header,
wherein the ADT includes the length field only when the specific value is included in the header.

15. The method of claim 14 , wherein, when the header includes the specific value, the data field includes 1 to 255 bytes of data.

16. The method of claim 13 , wherein the ADT includes:
a first ADT including a value indicating that the size of the data field is variable in the header and including the data field and the length field in the message field, and
a second ADT including a value indicating the size of the data field in the header and including the data field in the message field.

17. The method of claim 13 , wherein the ADC and the ADT are included in a Bluetooth packet used in the Bluetooth communication and are transmitted or received through the Bluetooth communication.

18. The method of claim 17 , wherein the ADC includes a first ADC indicating open of the data transport stream and a second ADC indicating an end of the data transport stream,
wherein the data transport stream includes the first ADC, at least one of the ADT and the second ADC,
wherein the Bluetooth packet includes at least a portion of the first ADC, at least one of the ADT, and the second ADC.

Assignees

• Lg Electronics Inc

Inventors

• Park Yongcheol

Classifications

• H04B5/266

  One coil at each side, e.g. with primary and secondary coils · CPC title

• H04B5/45

  Transponders · CPC title

• H04B5/263

  Multiple coils at either side · CPC title

• H02J50/40

  using two or more transmitting or receiving devices (H02J50/50 takes precedence) · CPC title

• H02J50/10

  using inductive coupling · CPC title