METHOD FOR TRANSMITTING WIRELESS POWER IN WIRELESS CHARGING SYSTEM INCLUDING A WIRELESS POWER TRANSMITTING UNIT AND WIRELESS POWER RECEIVING UNIT

• US 20190097451A1
• Filed: 11/29/2018
• Published: 03/28/2019
• Est. Priority Date: 07/27/2015
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Kyung-Woo, Jung, Hee-Won
• Granted Patent: US 10,784,708 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• 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 7/00714 in response to battery charging or discharging current
• CPC Class Codes: H02J 7/007182 in response to battery voltage
• CPC Class Codes: H02J 7/007192 in response to temperature
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A method for transmitting wireless power in a wireless charging system and a wireless power transmitting unit (PTU) and provided. The method for transmitting wireless power in a wireless charging system includes receiving information related to a voltage from each of a plurality of power receiving units (PRUs); identifying a voltage ratio of each of the plurality of PRUs based on the received information, wherein the voltage ratio is a current voltage relative to a first voltage; determining a PRU among the plurality of PRUs based on the identified voltage ratio; and adjusting transmission power according to a voltage setting value of the determined PRU.

Claims

1. A method for transmitting wireless power in a wireless charging system, the method comprising:

receiving information related to a voltage from each of a plurality of power receiving units (PRUs);

identifying a voltage ratio of each of the plurality of PRUs based on the received information, wherein the voltage ratio is a current voltage relative to a first voltage;

determining a PRU among the plurality of PRUs based on the identified voltage ratio; and

adjusting transmission power according to a voltage setting value of the determined PRU.

2. The method of claim 1, wherein the determined PRU is regarded as a dominant PRU.

3. The method of claim 1, wherein the first voltage is a maximum operational voltage which is set by each of the plurality of PRUs.

4. The method of claim 1, wherein the information related to the voltage is transmitted through a PRU static signal or a PRU dynamic signal that is transmitted by the PRU.

5. The method of claim 1, wherein the determined PRU is a PRU has the highest voltage ratio among the plurality of the PRUs.

6. The method of claim 1, wherein the first voltage is transmitted through a PRU static signal or a PRU dynamic signal that is transmitted by the PRU.

7. The method of claim 6, wherein the current voltage is transmitted through a PRU dynamic signal that is transmitted by the PRU in a power transmission mode.

8. A wireless power transmitting unit (PTU), comprising:

a communication unit configured to receive information related to a voltage from each of a plurality of power receiving units (PRUs);

a processor configured to identify a voltage ratio of each of the plurality of PRUs based on the received information, and determine a PRU among the plurality of PRUs based on the identified voltage ratio, wherein the voltage ratio is a current voltage relative to a first voltage; and

a power transmitter configured to transmit power to the plurality of PRUs based on a voltage setting value of the determined PRU.

9. The PTU of claim 8, wherein the determined PRU is regarded as a dominant PRU.

10. The PTU of claim 8, wherein the first voltage is a maximum operational voltage which is set by each of the plurality of PRUs.

11. The PTU of claim 8, wherein the information related to the voltage is transmitted through a PRU static signal or a PRU dynamic signal that is transmitted by the PRU.

12. The PTU of claim 8, wherein the determined PRU is a PRU has the highest voltage ratio among the plurality of the PRUs.

13. The PTU of claim 8, wherein the first voltage is transmitted through a PRU static signal or a PRU dynamic signal that is transmitted by the PRU.

14. The PTU of claim 8, wherein the current voltage is transmitted through a PRU dynamic signal that is transmitted by the PRU in a power transmission mode.