Power feeding apparatus and wireless power feeding system

• US 8,860,254 B2
• Filed: 06/21/2011
• Issued: 10/14/2014
• Est. Priority Date: 07/09/2010
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kozakai, Osamu, Mita, Hiroyuki
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): DHILLON, JAGDEEP S
• Application Number:
  US13/164,969
• Publication Number:
  US 20120007439A1
• Time in Patent Office: 1,211 Days
• Field of Search: 307/104, 320/103, 320/104, 320/108, 320/109
• US Class Current: 307/104
• CPC Class Codes: H01F 27/361 made of combinations of electrically conductive material and ferromagnetic material
• 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 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

Disclosed herein is a power feeding apparatus, including: a power feeding portion adapted to feed an electric power in a wireless manner; and a storage body storing therein the power feeding portion. The storage body includes a main body, a first storage portion formed within the main body and storing therein the power feeding portion, and at least one second storage portion formed so as to be adapted to store or retrieve a power receiving apparatus as a storage object in or from the main body, the electric power of the power feeding portion stored in the first storage portion being adapted to be fed from the at least one second storage portion. At least a magnetically shielding portion is formed in an outer peripheral portion, and the at least one second storage portion forms a magnetically closed space in a state of being stored in the main body.

Claims

1. A power feeding apparatus, comprising:

a power feeding portion adapted to feed an electric power in a wireless manner; and

a storage body storing therein said power feeding portion,

wherein,

(a) said storage body includes

(1) a main body,

(2) a first storage portion within said main body and within which said power feeding portion is located, and

(3) at least one second storage portion within which a power receiving apparatus can be located,

(b) each second storage portion being (i) displaceable relative to the main body and (ii) such that the power receiving apparatus can be introduced thereinto and retrieved therefrom,

(c) the main body comprises a closed magnetically shielding portion in an outer periphery thereof, and

(d) for each second storage portion, a moveable portion of the outer periphery of the main body and the magnetic shielding portion is moveable relative to the main body to allow access to an interior of the second storage portion.

2. The power feeding apparatus according to claim 1, wherein:

said storage body includes a detecting portion that detects whether said at least one second storage portion is stored within said main body or retrieved from said main body, and

said power feeding portion includes a control portion that allows the power feeding portion to feed power when said detecting portion detects that said at least one second storage portion is stored within said main body, and stops the power feeding portion from feeding power when said detecting portion detects that said second storage portion is retrieved from said main body.

3. The power feeding apparatus according to claim 1, wherein the storage body comprises an electric field shielding portion in an outer peripheral portion of said storage body that forms an electromagnetically shielding closed space when said moveable portion of the outer periphery of said main body is aligned with the outer periphery of the main body.

4. The power feeding apparatus according to claim 1 comprising plural second storage portions which are equidistant from the first storage portion.

5. The power feeding apparatus according to claim 1 comprising plural second storage portions.

6. The power feeding apparatus according to claim 1, wherein:

in said storage body, said first storage portion is a hinge portion within which is stored said power feeding portion, and

said at least one second storage portion is mounted so as to pivot around said hinge portion.

7. The power feeding apparatus according to claim 6, wherein:

said storage body includes plural second storage portions,

the power feeding portion comprises plural power transmitting coil portions each corresponding to a respective one of the plural second storage portions, the power transmitting coil portions disposed in said hinge portion, and

said power feeding apparatus is configured to selectively drive said power transmitting coil portions.

8. A wireless power feeding system, comprising:

a power feeding apparatus; and

a power receiving apparatus that receives electric power fed from said power feeding apparatus via a magnetic field sympathetic resonance relationship,

wherein,

(a) said power feeding apparatus includes

(1) a power feeding portion that feeds electric power in a wireless manner, and

(2) a storage body in which said power feeding portion is located,

(b) said storage body includes

(1) a main body,

(2) a first storage portion within said main body and in which said power feeding portion is located, and

(3) at least one second storage portion within which a power receiving apparatus can be located

(c) each second storage portion being (i) displaceable relative to the main body and (ii) such that the power receiving apparatus can be introduced thereinto and retrieved therefrom

(d) the main body comprises a closed magnetically shielding portion in an outer periphery thereof, and

(e) for each second storage portion, a moveable portion of the outer periphery of the main body and the magnetic shielding portion is moveable relative to the main body to allow access to an interior of the second storage portion.

9. The wireless power feeding system according to claim 8, wherein

said storage body includes a detecting portion that detects whether said at least one second storage portion stored within or retrieved from said main body, and

said power feeding portion includes a control portion that allows the power feeding portion to feed power when said detecting portion detects that said at least second storage portion is stored within said main body, and stops the power feeding portion from feeding power when said detecting portion detects that said second storage portion retrieved from said main body.

10. The wireless power feeding system according to claim 8, wherein the storage body comprises an electric field shielding portion in an outer peripheral portion of said storage body that forms an electromagnetically shielding closed space when said moveable portion of the outer periphery of the main body is aligned with the outer periphery of the main body.

11. The wireless power feeding system according to claim 9 comprising plural second storage portions that are equidistant from the first storage portion.

12. The wireless power feeding system according to claim 8 comprising plural second storage portions.

13. The wireless power feeding system according to claim 8, wherein

in said storage body, said first storage portion is formed as a hinge portion within which said power feeding portion is located, and

said at least one second storage portion is mounted so as to pivot around said hinge portion.

14. The wireless power feeding system according to claim 13, wherein:

said storage body includes plural second storage portions,

the power feeding portion comprises plural power transmitting coil portions each corresponding to a respective one of the plural second storage portions, the power transmitting coil portions disposed in said hinge portion, and

said power feeding apparatus is configured to selectively drive said power transmitting coil portions.