Wireless power transfer method, apparatus and system

Patent metadata

Field	Value
Publication number	US-2016134334-A1
Application number	US-201414897402-A
Country	US
Kind code	A1
Filing date	Jun 16, 2014
Priority date	Jun 16, 2013
Publication date	May 12, 2016
Grant date	—

Abstract

The present disclosure relates to a wireless power transmission method, a wireless power transmission apparatus, and a wireless charging system in a wireless power transmission field, and there is provided a communication method of a wireless power transmitter capable of the transmission of power in a wireless manner, and the communication method may include receiving communication information indicating whether or not a second communication mode is available using a first communication mode from a wireless power receiver, determining whether or not communication in a second communication mode is available using the communication information, notifying either one of the first communication mode and second communication mode to the wireless power receiver based on the determination result, and performing communication with the wireless power receiver using a communication mode notified to the wireless power receiver.

First claim

1 . A communication method of a wireless power transmitter capable of the transmission of power in a wireless manner, the communication method comprising:
receiving communication information indicating whether or not a second communication mode is available using a first communication mode from a wireless power receiver; determining whether or not communication in the second communication mode is available using the communication information; notifying either one of the first communication mode and the second communication mode to the wireless power receiver based on the determination result; and performing communication with the wireless power receiver using either one of the first communication mode and the second communication mode notified to the wireless power receiver.

2 . The communication method of claim 1 , wherein said notifying the determination result to the wireless power receiver notifies using the first communication mode.

3 . The communication method of claim 2 , wherein said notifying the determination result to the wireless power receiver receives whether or not the either one communication mode is used from the wireless power receiver.

4 . The communication method of claim 3 , wherein said performing communication with the wireless power receiver initializes a communication status such that the wireless power transmitter performs communication in the either one communication mode.

5 . The communication method of claim 4 , further comprising:
transmitting power to the wireless power receiver in a wireless manner when the communication status is initialized.

6 . The communication method of claim 5 , wherein a currently set communication status is reinitialized when the transmission of wireless power is transmitted at a level less than a preset value during the transmission of wireless power.

7 . The communication method of claim 1 , further comprising:
notifying either one communication mode to the wireless power receiver, and then receiving information on whether or not to perform communication in the either one communication mode from the wireless power receiver.

8 . The communication method of claim 7 , wherein communication is carried out in a different communication mode from the either one communication mode when receiving information that communication is not carried out in the either one communication mode from the wireless power receiver.

9 . The communication method of claim 1 , wherein the communication information further comprises a communication protocol catalog containing at least one communication method, and
said determining whether or not communication is available determines whether or not communication is available for each of the at least one communication method.

10 . The communication method of claim 9 , wherein when there are a plurality of communication methods determined to have available communication, a communication status is initialized to perform communication according to any one of the plurality of communication methods determined to have available communication.

11 . The communication method of claim 10 , wherein the any one communication method is determined by a response received from the wireless power receiver.

12 . The communication method of claim 10 , wherein the priority of the plurality of communication methods determined to have available communication is determined based on a preset condition.

13 . A communication method of a wireless power receiver capable of the reception of power in a wireless manner, the communication method comprising:
transmitting communication information indicating whether or not a second communication mode is available using a first communication mode from a wireless power transmitter; receiving whether or not to use either one of the first and the second communication mode in response to the transmission; determining whether or not to use the either one communication mode; and performing communication with the wireless power transmitter based on the determination.

14 . The communication method of claim 13 , wherein a communication status is initialized to perform communication in the either one communication mode when the use of the either one communication mode is determined.

15 . The communication method of claim 14 , further comprising:
transmitting information that uses the either one communication mode to the wireless power transmitter when the use of the either one communication mode is determined.

16 . The communication method of claim 13 , wherein wireless power is received from the wireless power transmitter while performing communication with the wireless power transmitter.

17 . A communication method of a wireless power system for transmitting and receiving power in a wireless manner, the communication method comprising:
allowing a wireless power receiver to transmit communication information indicating whether or not a second communication mode is available using a first communication mode to a wireless power transmitter; allowing the wireless power transmitter to determine whether or not communication in a second communication mode is available using the communication information; notifying either one of the first and second communication mode to the wireless power receiver based on the determination result; allowing the wireless power receiver to determine whether or not to use the either one communication mode in response to the notification; and allowing the wireless power transmitter and the wireless power receiver to perform communication in the either one of the first and the second communication mode according to the determination.

18 . The communication method of claim 17 , wherein the wireless power transmitter transmits wireless power to the wireless power receiver while performing communication in the either one communication mode according to the determination.

19 . The communication method of claim 18 , wherein the wireless power transmitter initializes a communication status set to perform communication in the either one communication mode when sensed that wireless power transmitted by the wireless power transmitter is transmitted at a level less than a preset value.

20 . The communication method of claim 17 , wherein the communication status of the wireless power transmitter and wireless power receiver is initialized when the use of the either one mode is determined in the wireless power receiver.

Assignees

• Lg Electronics Inc

Inventors

• Park Yongcheol
• Lee Hyunbeom

Classifications

• H02J50/12

  of the resonant type · 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

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H04B5/0037

  Electricity · mapped topic

• H04B5/0031 Primary

  Electricity · mapped topic