WIRELESS POWER TRANSFER SYSTEM, CONTROL METHOD OF WIRELESS POWER TRANSFER SYSTEM, WIRELESS POWER TRANSMITTING APPARATUS, CONTROL METHOD OF WIRELESS POWER TRANSMITTING APPARATUS, AND STORAGE MEDIUM

• US 20120112539A1
• Filed: 09/27/2011
• Published: 05/10/2012
• Est. Priority Date: 11/04/2010
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Yamamoto, Tetsuya
• Granted Patent: US 8,884,471 B2
• Time in Patent Office: Days
• US Class Current: 307/11
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/0049 Detection of fully charged condition
• CPC Class Codes: H02J 7/0071 with a programmable schedule
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage

Abstract

A wireless power transfer system comprising a wireless power transmitting apparatus and a plurality of wireless power receiving apparatuses, the wireless power transmitting apparatus comprising: a power transmitting unit adapted to transmit power to the wireless power receiving apparatus; a recognition unit adapted to recognize the wireless power receiving apparatus; and a transmitting unit adapted to transmit predetermined charging delay information according to a recognition result of the recognition unit to the wireless power receiving apparatus recognized by the recognition unit, and the wireless power receiving apparatus comprising: a power receiving unit adapted to receive power transmitted from the power transmitting unit; a receiving unit adapted to receive the predetermined charging delay information transmitted from the transmitting unit; and a display unit adapted to make a display based on the predetermined charging delay information received by the receiving unit.

Claims

1. A wireless power transfer system comprising a wireless power transmitting apparatus and a plurality of wireless power receiving apparatuses,

said wireless power transmitting apparatus comprising:

a power transmitting unit adapted to transmit power to the wireless power receiving apparatus;

a recognition unit adapted to recognize the wireless power receiving apparatus; and

a transmitting unit adapted to transmit predetermined charging delay information according to a recognition result of said recognition unit to the wireless power receiving apparatus recognized by said recognition unit, and

said wireless power receiving apparatus comprising;

a power receiving unit adapted to receive power transmitted from said power transmitting unit;

a receiving unit adapted to receive the predetermined charging delay information transmitted from said transmitting unit; and

a display unit adapted to make a display based on the predetermined charging delay information received by said receiving unit.

2. The system according to claim 1, wherein said wireless power transmitting apparatus further comprises:

a determination unit adapted to determine, when said recognition unit recognizes a new wireless power receiving apparatus, whether or not there is a wireless power receiving apparatus which has already received power transmitted from said power transmitting unit.

3. The system according to claim 2, wherein when said determination unit determines that there is the wireless power receiving apparatus which has already received power transmitted from said power transmitting unit,

said transmitting unit transmits the predetermined charging delay information indicating that said wireless power receiving apparatus is waiting until power reception is started.

4. The system according to claim 1, wherein the predetermined charging delay information includes information indicating the number of wireless power receiving apparatuses which are waiting for power reception.

5. The system according to claim 1, wherein the predetermined charging delay information includes information indicating an estimated time until said wireless power transmitting apparatus starts power transmission.

6. The system according to claim 2, wherein when said determination unit determines that there is the wireless power receiving apparatus which has already received power transmitted from said power transmitting unit,

said transmitting unit transmits the predetermined charging delay information indicating that a plurality of wireless power receiving apparatuses are simultaneously receiving power.

7. The system according to claim 1, wherein the predetermined charging delay information includes information indicating that a time required until completion of charging will be prolonged since a plurality of wireless power receiving apparatuses are simultaneously receiving power.

8. The system according to claim 1, wherein the predetermined charging delay information includes information indicating the number of wireless power receiving apparatuses which are simultaneously receiving power.

9. The system according to claim 1, wherein said wireless power transmitting apparatus further comprises:

a second display unit adapted to make a display based on the predetermined charging delay information.

10. A control method of a wireless power transfer system comprising a wireless power transmitting apparatus and a wireless power receiving apparatus, the method comprising:

in the wireless power transmitting apparatus,

transmitting power to the wireless power receiving apparatus;

recognizing the wireless power receiving apparatus; and

transmitting predetermined charging delay information according to a recognition result in the recognizing to the wireless power receiving apparatus, and

in the wireless power receiving apparatus,

receiving power transmitted in the transmitting power;

receiving the predetermined charging delay information transmitted in the transmitting; and

making a display based on the predetermined charging delay information received in the receiving.

11. A computer-readable non-transitory storage medium storing a computer program for controlling a computer to execute respective steps of a control method of a wireless power transfer system of claim 10.

12. A wireless power transmitting apparatus for transmitting power to a wireless power receiving apparatus, comprising:

a power transmitting unit adapted to transmit power to the wireless power receiving apparatus;

a recognition unit adapted to recognize the wireless power receiving apparatus; and

a transmitting unit adapted to transmit predetermined charging delay information according to a recognition result of said recognition unit to the wireless power receiving apparatus.

13. The apparatus according to claim 12, further comprising:

a determination unit adapted to determine, when said recognition unit recognizes a new wireless power receiving apparatus, whether or not there is a wireless power receiving apparatus which has already received power transmitted from said power transmitting unit.

14. The apparatus according to claim 13, wherein when said determination unit determines that there is the wireless power receiving apparatus which has already received power transmitted from said power transmitting unit,

said transmitting unit transmits the predetermined charging delay information indicating that the wireless power receiving apparatus is waiting until power reception is started.

15. The apparatus according to claim 12, wherein the predetermined charging delay information includes information indicating the number of wireless power receiving apparatuses which are waiting for power reception.

16. The apparatus according to claim 12, wherein the predetermined charging delay information includes information indicating an estimated time until said wireless power transmitting apparatus starts power transmission.

17. The apparatus according to claim 13, wherein when said determination unit determines that there is the wireless power receiving apparatus which has already received power transmitted from said power transmitting unit,

said transmitting unit transmits the predetermined charging delay information indicating that a plurality of wireless power receiving apparatuses are simultaneously receiving power.

18. The apparatus according to claim 12, wherein the predetermined charging delay information includes information indicating that a time required until completion of charging will be prolonged since a plurality of wireless power receiving apparatuses are simultaneously receiving power.

19. The apparatus according to claim 12, wherein the predetermined charging delay information includes information indicating the number of wireless power receiving apparatuses which are simultaneously receiving power.

20. The apparatus according to claim 12, further comprising:

a second display unit adapted to make a display based on the predetermined charging delay information.

21. A control method of a wireless power transmitting apparatus for transmitting power to a wireless power receiving apparatus, comprising:

transmitting power to the wireless power receiving apparatus;

recognizing the wireless power receiving apparatus; and

transmitting predetermined charging delay information according to a recognition result in the recognizing to the wireless power receiving apparatus.

22. A computer-readable non-transitory storage medium storing a computer program for controlling a computer to execute respective steps of a control method of a wireless power transmitting apparatus of claim 21.