WIRELESS POWER TRANSFER SYSTEM, WIRELESS POWER TRANSFER APPARATUS, WIRELESS POWER TRANSFER METHOD, CONTROL METHOD FOR THE WIRELESS POWER TRANSFER APPARATUS, AND STORAGE MEDIUM STORING PROGRAM

• US 20150061401A1
• Filed: 03/29/2013
• Published: 03/05/2015
• Est. Priority Date: 04/13/2012
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nago, Hidetada
• Application Number:
  US14/394,008
• Publication Number:
  US 20150061401A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 5/005 with inductive power transfer for charging H02J7/025
• CPC Class Codes: H02J 50/12 of the resonant type
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

The disclosure relates to a wireless power transfer system composed of a power transmission apparatus including power transmission elements configured to transmit power and a power reception apparatus including power reception elements configured to receive the power. The wireless power transfer system communicates information related to the power transmission elements or the power reception elements between the power transmission apparatus and the power reception apparatus and selects a combination of the power transmission element and the power reception element used for wireless power transfer among plural combinations of the power transmission elements and the power reception elements by using the communicated information.

Claims

1. A wireless power transfer system composed of a power transmission apparatus including power transmission elements configured to transmit power and a power reception apparatus including power reception elements configured to receive the power, the wireless power transfer system comprising:

a communication unit configured to communicate information related to a wireless power transfer system supported by the power transmission apparatus or the power reception elements between the power transmission apparatus and the power reception apparatus; and

a selection unit configured to select a combination of the power transmission element and the power reception element used for wireless power transfer among a plurality of combinations of the power transmission elements and the power reception elements by using the information communicated by the communication unit.

2. A wireless power transfer apparatus that performs wireless power transfer with another apparatus, the wireless power transfer apparatus comprising:

a plurality of power transfer elements configured to transfer power;

an obtaining unit configured to obtain information related to a wireless power transfer system supported by the other apparatus; and

a selection unit configured to select the power transfer element used for the wireless power transfer among the plurality of power transfer elements by using the information obtained by the obtaining unit.

3. The wireless power transfer apparatus according to claim 2, wherein the obtaining unit obtains information related to power transfer elements of the other apparatus, and wherein the selection unit selects the power transfer element used for the wireless power transfer among the plurality of power transfer elements by using the information related to the power transfer elements of the other apparatus.

4. The wireless power transfer apparatus according to claim 2, wherein the obtaining unit obtains the information related in accordance with a situation in which the wireless power transfer apparatus and the other apparatus are approximated to each other within a communicable range.

5. The wireless power transfer apparatus according to claim 2, further comprising a movement unit configured to move the power transfer element selected by the selection unit while corresponding to a location of the other apparatus.

6. The wireless power transfer apparatus according to claim 2, further comprising a unit configured to set the power transfer elements that are not selected by the selection unit among the plurality of power transfer elements in an electrically open or short-circuited state.

7. The wireless power transfer apparatus according to claim 2, further comprising a notification unit configured to notify the other apparatus of start of power transfer.

8. The wireless power transfer apparatus according to claim 2, wherein the obtaining unit obtains the information through a communication with the other apparatus by using the power transfer element.

9. The wireless power transfer apparatus according to claim 7, further comprising a power transfer unit configured to perform power transfer with the other apparatus by using the power transfer element selected by the selection unit, wherein the power transfer element is not connected to a circuit configured to perform a communication when the power transfer is performed by the power transfer unit.

10. The wireless power transfer apparatus according to claim 2, wherein the plurality of power transfer elements have mutually different sizes or shapes.

11. The wireless power transfer apparatus according to claim 2, wherein the wireless power transfer apparatus is a power transmission apparatus that transmits power.

12. The wireless power transfer apparatus according to claim 2, wherein the wireless power transfer apparatus is a power reception apparatus that receives power.

13. The wireless power transfer apparatus according to claim 2, further comprising a display unit configured to perform a display for urging a user to move the other apparatus to a location corresponding to the power transfer element selected by the selection unit.

15. The wireless power transfer apparatus according to claim 2, wherein in a case where a power transfer efficiency at a time when the power transfer element selected by the selection unit is used is below a predetermined value, the selection unit selects a power transfer element again.

16. The wireless power transfer apparatus according to claim 2,

wherein the plurality of power transfer elements are three or more power transfer elements, wherein the selection unit selects two or more power transfer elements among the plurality of power transfer elements, and

wherein the wireless power transfer apparatus performs the power transfer with the other apparatus by using the selected two or more power transfer elements.

14. (canceled)

17. (canceled)

18. A wireless power transfer method for a wireless power transfer system composed of a power transmission apparatus including power transmission elements configured to transmit power and a power reception apparatus including power reception elements configured to receive the power, the wireless power transfer method comprising:

communicating information related to a wireless power transfer system supported by the power transmission apparatus or a wireless power transfer system supported by the power reception elements between the power transmission apparatus and the power reception apparatus; and

selecting a combination of the power transmission element and the power reception element used for wireless power transfer among a plurality of combinations of the power transmission elements and the power reception elements by using the information communicated the communication unit.

19. A control method for a wireless power transfer apparatus including a plurality of power transfer elements configured to perform power transfer with another apparatus, the control method comprising:

obtaining information related to power transfer elements of the other apparatus; and

selecting the power transfer element used for the power transfer among the plurality of power transfer elements by using the obtained information.

21. A storage medium storing a program for causing a computer to operate as the apparatus according to claim 19.

20. (canceled)

22. A storage medium storing a program for causing a computer to operate as the apparatus according to claim 20.