POWER TRANSFER SYSTEM, AND POWER RECEIVING APPARATUS, POWER TRANSMITTING APPARATUS, AND CONTROL METHOD THEREOF

• US 20160126749A1
• Filed: 07/25/2014
• Published: 05/05/2016
• Est. Priority Date: 07/29/2013
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Shichino, Takahiro
• Granted Patent: US 10,559,984 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

In a power transfer system, a power transmitting apparatus includes: power transmission means for wirelessly transmitting power to a power receiving apparatus disposed within a predetermined power transmission range; transmission means for transmitting a power transmitting apparatus identifier unique to the power transmitting apparatus using a power transmission pulse performed by the power transmission means; and power transmitting apparatus communication means for communicating wirelessly with the power receiving apparatus, and a power receiving apparatus includes: power receiving means for receiving power wirelessly from the power transmitting apparatus; extracting means for extracting the power transmitting apparatus identifier from the power transmission pulse received by the power receiving means; and power receiving apparatus communication means for communicating wirelessly with a power transmitting apparatus that transmits a communication packet containing the power transmitting apparatus identifier extracted by the extracting means.

Claims

1-12. -12. (canceled)

13. A power transmitting apparatus comprising:

a power transmission unit configured to transmit power by using an electromagnetic wave outputted by a first antenna;

a first communication unit configured to communicate by using an electromagnetic wave outputted by the first antenna;

a second communication unit configured to communicate by using a second antenna which is different from the first antenna; and

a control unit configured to make the power transmission unit transmit power to a power receiving apparatus that is connected via the second communication unit by using predetermined information which is communicated via the first communication unit.

14. The power transmitting apparatus according to claim 13, wherein the control unit restricts transmission of power by the power transmission unit to a power receiving apparatus that is connected via the second communication unit without using the predetermined information communicated via first communication unit.

15. The power transmitting apparatus according to claim 13, wherein the control unit makes the power transmission unit transmit power to the power receiving apparatus in a case where information, indicating wireless power transfer from the power receiving apparatus connected via the second communication unit is supported, can be obtained.

16. The power transmitting apparatus according to claim 13, further comprises a detection unit configured to detect an object that exists within a power transmission range of the power transmission unit based on an impedance change,

wherein, in accordance with detection of the object by the detection unit, the control unit restricts transmission of power by the power transmission unit to the object in a case where communication via the second communication unit is not started.

17. The power transmitting apparatus according to claim 16, further comprises an instruction unit configured to instruct the power receiving apparatus that is connected via the second communication unit to change an impedance,

wherein the detection unit detects an object that exists within the power transmission range of the power transmission unit after the instruction by the instruction unit.

18. The power transmitting apparatus according to claim 13, further comprises:

an obtaining unit configured to obtain transmission efficiency of power transmission from the power transmission unit to the power receiving apparatus, and

an adjusting unit configured to adjust the transmission efficiency of the power transmission by the power transmission unit based on the transmission efficiency obtained by the obtaining unit.

19. The power transmitting apparatus according to claim 13, further comprises an obtaining unit configured to obtain a power receiving parameter of the power receiving apparatus by communication via the second communication unit,

wherein the power transmission unit transmits the power to the power receiving apparatus in accordance with the power receiving parameter obtained by the obtaining unit.

20. The power transmitting apparatus according to claim 13, wherein the first communication unit communicates the predetermined information in a case where a second power receiving apparatus exists within the power transmission range of the power transmission unit while transmitting power to a first power receiving apparatus by the power transmission unit, and

the control unit makes the power transmission unit transmit power to the first power receiving apparatus and the second power receiving apparatus in a case where the predetermined information, which is communicated via the first communication unit, is communicated with the second power receiving apparatus via the second communication unit.

21. The power transmitting apparatus according to claim 13, wherein a frequency used by communication via the first communication unit and a frequency used by communication via the second communication unit are different.

22. The power transmitting apparatus according to claim 13, wherein the first communication unit transmits or receives the predetermined information.

23. The power transmitting apparatus according to claim 13, wherein the second communication unit communicates in accordance with a Bluetooth, Bluetooth LowEnergy or Wi-Fi standard.

24. A power receiving apparatus comprising:

a power reception unit configured to receive power by using an electromagnetic wave inputted by a first antenna;

a first communication unit configured to communicate by using an electromagnetic wave inputted by the first antenna; and

a second communication unit configured to communicate by using a second antenna which is different from the first antenna,

wherein the power reception unit receives power from a power transmitting apparatus that is connected via the second communication unit by using predetermined information which is communicated via the first communication unit.

25. The power receiving apparatus according to claim 24, wherein the power receiving apparatus does not receive power by the power reception unit from a power transmitting apparatus that is connected via the second communication unit without using the predetermined information communicated via the first communication unit.

26. The power receiving apparatus according to claim 24, wherein the second communication unit transmits a power receiving parameter of the power receiving apparatus to the power transmitting apparatus.

27. The power receiving apparatus according to claim 24, further comprises a unit configured to change an impedance in accordance with an instruction by the power transmitting apparatus.

28. The power receiving apparatus according to claim 24, wherein the first communication unit transmits or receives the predetermined information.

29. The power receiving apparatus according to claim 24, wherein the second communication unit communicates in accordance with a Bluetooth, Bluetooth LowEnergy or Wi-Fi standard.

30. A control method for a power transmitting apparatus including a power transmission unit configured to transmit power by using an electromagnetic wave outputted by a first antenna, the method comprising:

communicating by using an electromagnetic wave outputted by the first antenna;

communicating by using a second antenna which is different from the first antenna; and

making the power transmission unit transmit power to a power receiving apparatus that is connected via the antenna by using predetermined information which is communicated via the first antenna.

31. A non-transitory computer-readable storage medium storing a program that when executed causes a computer to perform a control method for a power transmitting apparatus including a power transmission unit configured to transmit power by using an electromagnetic wave outputted by a first antenna, the method comprising:

communicating by using an electromagnetic wave outputted by the first antenna;

communicating by using a second antenna which is different from the first antenna; and

making the power transmission unit transmit power to a power receiving apparatus that is connected via the antenna by using predetermined information which is communicated via the first antenna.

32. A control method for a power receiving apparatus including a power reception unit configured to receive power by using an electromagnetic wave inputted by a first antenna, the method comprising:

communicating by using an electromagnetic wave inputted by the first antenna; and

communicating by using a second antenna which is different from the first antenna,

wherein the power reception unit receives power from a power transmitting apparatus that is connected via the second antenna by using predetermined information which is communicated via the first antenna.

33. A non-transitory computer-readable storage medium storing a program that when executed causes a computer to perform a control method for a power receiving apparatus including a power reception unit configured to receive power by using an electromagnetic wave inputted by a first antenna, the method comprising:

communicating by using an electromagnetic wave inputted by the first antenna; and

communicating by using a second antenna which is different from the first antenna,

wherein the power reception unit receives power from a power transmitting apparatus that is connected via the second antenna by using predetermined information which is communicated via the first antenna.