Wireless power transmitting device and communication method by wireless power transmitting device

Patent metadata

Field	Value
Publication number	US-12046927-B2
Application number	US-202117908463-A
Country	US
Kind code	B2
Filing date	Mar 4, 2021
Priority date	Mar 4, 2020
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

A device for transmission of wireless power according to an embodiment of the present specification comprises: a power conversion circuit for transmitting the wireless power to a wireless power receiving device; and a communication/control circuit for communicating with the wireless power receiving device and controlling the wireless power, wherein the communication/control circuit transmits a response to a reception data packet received from the wireless power receiving device or a transmission data packet transmitted to the wireless power receiving device on the basis of a timeout period, and the timeout period is changed according to a communication speed between the communication/control circuit and the wireless power receiving device.

First claim

What is claimed is:

1. A wireless power transmitter for transferring wireless power to a wireless power receiver comprising:
a power converter configured to transfer the wireless power to the wireless power receiver; and
a communicator/controller configured to communicate with the wireless power receiver and control the wireless power,
wherein the wireless power transmitter is configured to:
receive, from the wireless power receiver in a negotiation phase, a specific request (SRQ) data packet for a configuration of frequency shift keying (FSK),
wherein the SRQ data packet includes information for a number of cycles that make up an FSK bit, and
wherein the number of cycles is one of 512, 256, 128, or 64; and
transmit, to the wireless power receiver after the negotiation phase, a data stream related to an authentication,
wherein the wireless power transmitter performs the authentication based on the FSK having the number of cycles which is one of 512, 256, 128, or 64.

2. The wireless power transmitter of claim 1 , wherein the SRQ data packet includes information for polarity of the FSK and information for depth of the FSK.

3. The wireless power transmitter of claim 1 , wherein the wireless power transmitter transmits a data packet using the FSK based on the number of cycles.

4. A method for transferring a wireless power to a wireless power receiver, the method performed by a wireless power transmitter and comprising:
receiving, from the wireless power receiver in a negotiation phase, a specific request (SRQ) data packet for a configuration of frequency shift keying (FSK),
wherein the SRQ data packet includes information for a number of cycles that make up an FSK bit, and
wherein the number of cycles is one of 512, 256, 128, or 64; and
transmitting, to the wireless power receiver after the negotiation phase, a data stream related to an authentication,
wherein the wireless power transmitter performs the authentication based on the FSK having the number of cycles which is one of 512, 256, 128, or 64.

5. The method of claim 4 , wherein the SRQ data packet includes information for polarity of the FSK and information for depth of the FSK.

6. The method of claim 4 , wherein the wireless power transmitter transmits a data packet using the FSK based on the number of cycles.

7. A method for receiving a wireless power from a wireless power transmitter, the method performed by a wireless power receiver and comprising:
transmitting, to the wireless power transmitter in a negotiation phase, a specific request (SRQ) data packet for a configuration of frequency shift keying (FSK),
wherein the SRQ data packet includes information for a number of cycles that make up an FSK bit, and
wherein the number of cycles is one of 512, 256, 128, or 64; and
receiving, from the wireless power transmitter after the negotiation phase, a data stream related to an authentication,
wherein the authentication is performed based on the FSK having the number of cycles which is one of 512, 256, 128, or 64.

8. The wireless power transmitter of claim 1 , wherein the data stream includes:
an initial auxiliary data control (ADC) data packet opening the data stream;
a plurality of auxiliary data transport (ADT) data packet containing an actual message; and
a final ADC data packet closing the data stream.

9. The method of claim 4 , wherein the data stream includes:
an initial auxiliary data control (ADC) data packet opening the data stream;
a plurality of auxiliary data transport (ADT) data packet containing an actual message; and
a final ADC data packet closing the data stream.

10. The method of claim 7 , wherein the data stream includes:
an initial auxiliary data control (ADC) data packet opening the data stream;
a plurality of auxiliary data transport (ADT) data packet containing an actual message; and
a final ADC data packet closing the data stream.

Assignees

• Lg Electronics Inc

Inventors

• Choi Jingu
• Lee Minsoo
• Lee Hongwon
• Lim Jinkwon
• Kim Jaehyu
• Park Yongcheol

Classifications

• H04L27/12

  Modulator circuits; Transmitter circuits · CPC title

• H02J50/40

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

• H02J50/12 Primary

  of the resonant type · CPC title

• H04L1/0002

  by adapting the transmission rate · CPC title

• H02J50/80 Primary

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title