Wireless power transmitter and method for controlling wireless power transmitter

• US 10,164,479 B2
• Filed: 02/13/2015
• Issued: 12/25/2018
• Est. Priority Date: 02/20/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Song, Keum-Su, Lee, Kyung-Woo, Jung, Hee-Won
• Primary Examiner(s): Deberadinis, Robert
• Application Number:
  US15/120,693
• Publication Number:
  US 20170025903A1
• Time in Patent Office: 1,411 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 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• 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

Provided is a method for controlling a wireless power transmitter transmitting wireless power to at least one wireless power receiver. The method for controlling a wireless power transmitter, according to the present invention, can comprise the steps of: receiving information related to a wireless power receiver from at least one of each of the wireless power receiver; and controlling each of a plurality of power transmitting units included in the wireless power transmitter on the basis of the information related to the wireless power receiver.

Claims

1. A control method of a wireless power transmitter for transmitting wireless power to at least one wireless power receiver, the control method comprising:

receiving information related to the at least one wireless power receiver, from each of the at least one wireless power receiver; and

controlling each of multiple power transmission units included in the wireless power transmitter based on the information related to the at least one wireless power receiver,

wherein the multiple power transmission units are attachable/detachable and are connected by wire or wirelessly to the wireless power transmitter.

2. The control method as claimed in claim 1, wherein the information related to the at least one wireless power receiver comprises at least one of category information, voltage information, power information, current information, form information, and temperature information of the at least one wireless power receiver.

3. The control method as claimed in claim 1, wherein the controlling of each of the multiple power transmission units comprises determining a first power transmission unit to transmit power among the multiple power transmission units, based on the category information of the at least one wireless power receiver.

4. The control method as claimed in claim 3, wherein the determining of the first power transmission unit comprises determining that a power transmission unit of a lowest class from among the power transmission units capable of transmitting power in response to the category information of the at least one wireless power receiver is the first power transmission unit.

5. The control method as claimed in claim 1, wherein the controlling of each of the multiple power transmission units comprises distributing power to be applied to the multiple power transmission units.

6. The control method as claimed in claim 5, wherein the controlling of each of the multiple power transmission units comprises distributing power to be applied to the multiple power transmission units in response to the category information of the at least one wireless power receiver.

7. The control method as claimed in claim 1, further comprising:

receiving updated related information from the at least one wireless power receiver; and

controlling each of the multiple power transmission units included in the wireless power transmitter based on the updated related information.

8. A wireless power transmitter for transmitting wireless power to at least one wireless power receiver, the wireless power transmitter comprising:

multiple power transmission units that are attachable/detachable and are connected by wire or wirelessly to the wireless power transmitter;

a communication unit that receives information related to the at least one wireless power receiver, from each of the at least one wireless power receiver; and

a control unit that controls each of the multiple power transmission units based on the information related to the at least one wireless power receiver.

9. The wireless power transmitter as claimed in claim 8, wherein the information related to the at least one wireless power receiver comprises at least one of category information, voltage information, power information, current information, form information, and temperature information of the at least one wireless power receiver.

10. The wireless power transmitter as claimed in claim 8, wherein the control unit determines a first power transmission unit to transmit power among the multiple power transmission units, based on the category information of the at least one wireless power receiver.

11. The wireless power transmitter as claimed in claim 10, wherein the control unit determines that a power transmission unit of a lowest class from among the power transmission units capable of transmitting power in response to the category information of the at least one wireless power receiver is the first power transmission unit.

12. The wireless power transmitter as claimed in claim 8, wherein the control unit distributes power to be applied to the multiple power transmission units.

13. The wireless power transmitter as claimed in claim 12, wherein the control unit distributes power to be applied to the multiple power transmission units in response to the category information of the at least one wireless power receiver.

14. The wireless power transmitter as claimed in claim 8, wherein the communication unit receives updated related information from the at least one wireless power receiver, and the control unit controls each of the multiple power transmission units included in the wireless power transmitter based on the updated related information.

15. The wireless power transmitter as claimed in claim 8, wherein the multiple power transmission units are connected to each other in series or in parallel.

16. The wireless power transmitter as claimed in claim 15, further comprising, when the multiple power transmission units are connected in series to each other, a switch of which one terminal is connected to a node between the multiple power transmission units, and that is connected in parallel to the multiple power transmission units.

17. The wireless power transmitter as claimed in claim 8, wherein the multiple power transmission units comprise resonators included in different classes, respectively.