WIRELESS POWER TRANSFER AND RECEIVE METHOD, APPARATUS AND SYSTEM

• US 20160329755A1
• Filed: 02/06/2015
• Published: 11/10/2016
• Est. Priority Date: 02/07/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: PARK, Yongcheol, LEE, Hyunbeom
• Granted Patent: US 10,193,398 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/00308 Overvoltage protection

Abstract

The present disclosure relates to a wireless power transmission and reception method, a wireless power transmission and reception apparatus, and a wireless charging system in a wireless power transmission and reception field, and the method may include sensing whether or not there exists a wireless power receiver within a range capable of transmitting power in a wireless manner, sending a detection signal to the wireless power receiver, allowing the wireless power receiver to receive at least one of an identification packet and a setting packet transmitted in a first mode, determining whether or not to perform communication in either one of the first mode and a second mode different from the first mode based on the setting packet, and transmitting power to the wireless power receiver while performing communication in the determined either one mode, wherein the setting packet comprises an operation mode indicating a communication execution mode of the wireless power receiver.

Claims

1. A control method of a wireless power transmitter for transmitting power in a wireless manner, the method comprising:

transmitting a power signal to the wireless power receiver;

receiving at least one of an identification packet and a configuration packet transmitted in a first mode from the wireless power receiver;

determining whether or not the wireless power receiver supports a second mode different from the first mode based on the configuration packet; and

communicating to the wireless power receiver in the second mode when the wireless power receiver supports the second mode,

wherein the configuration packet comprises an operation mode indicating a communication execution mode of the wireless power receiver.

2. The method of claim 1, wherein the operation mode is either one of inductive mode information in which one wireless power transmitter performs communication with one wireless power receiver and resonant mode information in which one wireless power transmitter performs communication with a plurality of wireless power receivers.

3. The method of claim 2, wherein said transmitting power performs communication with the wireless power receiver according to the inductive mode information while transmitting the power when the operation mode information is the inductive mode information, and performs communication with the wireless power receiver according to the resonant mode information while transmitting the power when the operation mode information is the resonant mode information.

4. The method of claim 3, wherein when the operation mode information is resonant mode information, the method further comprises:

transmitting a first sync signal linked to a first slot among a plurality of slots;

receiving control information from a wireless power receiver within the first slot in response to the first sync signal; and

determining whether or not to allocate the first slot to the wireless power receiver.

5. The method of claim 4, wherein when the first slot is not allocated to the wireless power receiver, the method further comprises:

transmitting a second sync signal linked to a second slot different from the first slot among the plurality of slots;

receiving control information from the wireless power receiver within the second slot in response to the second sync signal; and

determining whether or not to allocate the second slot to the wireless power receiver.

6. The method of claim 4, wherein the first sync signal and the second sync signal have a pattern or packet form.

7. The method of claim 4, wherein operation mode information is transmitted to the wireless power receiver through the first slot.

8. The method of claim 1, further comprising:

transmitting a configuration packet of the wireless power transmitter to the wireless power receiver based on the operation mode information,

wherein the configuration packet comprises the operation mode information of the wireless power transmitter.

9. The method of claim 1, wherein when the operation mode information is a second mode, but the second mode is not supported, communication error information is transmitted to the wireless power receiver, and power is not transmitted to the wireless power receiver.

10. A control method of a wireless power receiver for receiving power in a wireless manner, the method comprising:

receiving a power signal from a wireless power transmitter for transmitting power in a wireless manner;

transmitting at least one of an identification packet and a configuration packet to the wireless power transmitter in a first mode;

determining whether or not the wireless power receiver supports a second mode different from the first mode based on the configuration packet; and

communicating to the wireless power transmitter in the second mode when the wireless power receiver supports the second mode;

wherein the configuration packet comprises an operation mode indicating a communication execution mode of the wireless power receiver.

11. The method of claim 10, wherein the operation mode is either one of inductive mode information in which one wireless power transmitter transmits power to one wireless power receiver and resonant mode information in which one wireless power transmitter transmits power to a plurality of wireless power receivers.

12. The method of claim 11, wherein communication is carried out between the wireless power transmitter and the wireless power receiver based on the operation mode information.

13. The method of claim 11, wherein power is received from the wireless power transmitter when the operation mode information is inductive mode information, and preset packets containing a power control message are sequentially transmitted to the wireless power transmitter when the operation mode information is resonant mode information.

14. The method of claim 10, wherein when the detection signal is received, a communication execution mode with the wireless power transmitter is determined, and a configuration packet containing operation mode information indicating the determined communication execution mode is transmitted.

15. The method of claim 10, wherein when communication error information is received in response to the configuration packet, power is not received from the wireless power transmitter.