WIRELESS POWER TRANSMISSION APPARATUS, WIRELESS POWER TRANSMISSION SYSTEM, AND WIRELESS COMMUNICATION APPARATUS

• US 20130328407A1
• Filed: 06/06/2013
• Published: 12/12/2013
• Est. Priority Date: 06/08/2012
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Shimura, Hajime
• Application Number:
  US13/911,381
• Publication Number:
  US 20130328407A1
• 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 50/10 using inductive coupling
• 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

Abstract

A magnetic body is arranged between a coil and a housing of a wireless power transmission apparatus configured to perform wireless power transmission with another apparatus. A manner of the layout is such that a plurality of faces of material is facing a plurality of faces of the housing of the wireless power transmission apparatus.

Claims

1. A wireless power transmission apparatus configured to perform wireless power transmission with another apparatus, the wireless power transmission apparatus comprising:

a coil configured to perform wireless power transmission; and

a magnetic body configured to be arranged such that at least a portion thereof penetrates an interior of the coil,

wherein a plurality of faces of the magnetic body is arranged to be facing a plurality of faces of a housing of the wireless power transmission apparatus.

2. The wireless power transmission apparatus according to claim 1, wherein the arrangement where a plurality of faces of the magnetic body is facing a plurality of faces of a housing of the wireless power transmission apparatus is a layout where each of a plurality of faces of the magnetic body is in contact with or in close proximity to a plurality of faces of the housing of the wireless power transmission apparatus.

3. The wireless power transmission apparatus according to claim 1, wherein the magnetic body comprises a rectangular solid body and a protruding portion protruding from a portion of the rectangular solid body, and the coil circumscribes the protruding portion.

4. The wireless power transmission apparatus according to claim 1, further comprising:

a detection unit configured to detect an orientation of the wireless power transmission apparatus; and

a notification unit configured to perform a predetermined notification to prompt a layout change of the wireless power transmission apparatus, according to the detected orientation and the plurality of faces of a housing of the wireless power transmission apparatus which the plurality of faces of the magnetic body is facing.

5. The wireless power transmission apparatus according to claim 1, further comprising:

an obtaining unit configured to obtain information about an orientation of the other apparatus; and

a notification unit configured to perform a predetermined notification to prompt a layout change of the wireless power transmission apparatus, according to the obtained information and the plurality of faces of a housing of the wireless power transmission apparatus which the plurality of faces of the magnetic body is facing.

6. The wireless power transmission apparatus according to claim 4, further comprising an obtaining unit configured to obtain information about an orientation of the other apparatus,

wherein the notification unit performs the predetermined notification, according to the obtained information and an orientation of the wireless power transmission apparatus.

7. The wireless power transmission apparatus according to claim 1, further comprising:

a detection unit configured to detect an orientation of the wireless power transmission apparatus; and

a notification unit configured to notify the other apparatus of the detected orientation, in order for the other apparatus to perform a predetermined notification that prompts a layout change of the wireless power transmission apparatus, according to an orientation of the wireless power transmission apparatus.

8. The wireless power transmission apparatus according to claim 1, further comprising:

a communication unit configured to perform short range wireless communication with the other apparatus; and

a notification unit configured to perform a predetermined notification that prompts layout change of the wireless power transmission apparatus, in accordance with communication by the communication unit.

9. The wireless power transmission apparatus according to claim 1, further comprising a notification unit configured to perform a predetermined notification that prompts a layout change of the wireless power transmission apparatus, based on a value selected from power receiving efficiency of wireless power transmission and impedance of the coil.

10. The wireless power transmission apparatus according to claim 1, further comprising a unit configured to perform an action selected from requesting the other apparatus for start of wireless power transmission and notifying the other apparatus for start of wireless power transmission, according to layout states of the wireless power transmission apparatus and the other apparatus.

11. The wireless power transmission apparatus according to claim 1, wherein the wireless power transmission is performed using a method selected from electromagnetic induction method and a magnetic field resonance method.

12. The wireless power transmission apparatus according to claim 1, wherein a corner of a housing of the wireless power transmission apparatus and a corner of the magnetic body are arranged in contact with or in close proximity to each other.

13. The wireless power transmission apparatus according to claim 1, wherein a case of performing the wireless power transmission while either face of a plurality of faces that is in contact with or in close proximity to a plurality of faces of the magnetic body while facing each other among faces of a housing of the wireless power transmission apparatus, is in contact with the other apparatus has higher transmission efficiency than a case of performing the wireless power transmission while either face other than a plurality of faces that is in contact with or in close proximity to a plurality of faces of the magnetic body among faces of the housing, is in contact with the other apparatus.

14. The wireless power transmission apparatus according to claim 13, wherein the transmission efficiency is defined based on a charging amount per unit of time or a time until full-charging is reached.

15. The wireless power transmission apparatus according to claim 1, wherein a face which is facing the housing of the magnetic body is larger than the coil.

17. A wireless power transmission system comprising:

the wireless power transmission apparatus according to claim 1; and

an other apparatus configured to perform wireless power transmission with the wireless power transmission apparatus.

19. A wireless power transmission system comprising:

the wireless power transmission apparatus according to claim 1; and

a second wireless power transmission apparatus comprising

a second coil configured to perform wireless power transmission; and

a second magnetic body configured to be arranged such that at least a portion thereof is arranged to penetrate through an interior of the second coil,

wherein a face of the second magnetic body which is in contact with or in close proximity to a housing of the second wireless power transmission apparatus is larger than the second coil.

24. The wireless power transmission apparatus according to claim 1, wherein the magnetic body, a portion of which is located inside the coil, comprises a closed loop with a magnetic body arranged within a wireless power transmission apparatus facing thereto.

16. A wireless power transmission apparatus comprising:

a coil configured to perform wireless power transmission; and

a magnetic body configured to be arranged such that at least a portion thereof is arranged to penetrate through an interior of the coil,

wherein a face of the magnetic body which is in contact with or in close proximity to a housing of the wireless power transmission apparatus is larger than the coil.

18. A wireless power transmission system comprising:

the wireless power transmission apparatus according to claim 16; and

an other apparatus configured to perform wireless power transmission with the wireless power transmission apparatus.

20. A wireless communication apparatus configured to perform wireless communication with another apparatus, the apparatus comprising:

a coil configured to perform wireless communication; and

a magnetic body configured to be arranged such that at least a portion thereof penetrates through an interior of the coil,

wherein a plurality of faces of the magnetic body is arranged to be facing a plurality of faces of a housing of the wireless communication apparatus.

21. A wireless communication apparatus configured to perform wireless communication with another apparatus, the apparatus comprising:

a coil configured to perform wireless communication; and

a magnetic body configured to be arranged such that at least a portion thereof penetrates through an interior of the coil,

wherein a face of the magnetic body which is in contact with or in close proximity to a housing of the wireless communication apparatus is larger than the coil.

22. A wireless power transmission apparatus comprising:

a housing of the wireless power transmission apparatus;

a first coil arranged within the housing, for performing wireless power transmission; and

a magnetic body,

wherein, if a first face of the housing not facing the first coil is facing a second coil of other wireless power transmission apparatus, the magnetic body is arranged so that wireless power transmission can be performed between the first coil and the second coil.

23. A wireless power transmission apparatus comprising:

a coil configured to perform wireless power transmission; and

a magnetic body configured to be arranged such that at least a portion thereof penetrates through an interior of the coil,

wherein a face of the magnetic body which is in contact with or in close proximity to a housing of the wireless power transmission apparatus is larger than the coil.