POWER FEEDING APPARATUS AND WIRELESS POWER FEEDING SYSTEM

• US 20120007439A1
• Filed: 06/21/2011
• Published: 01/12/2012
• Est. Priority Date: 07/09/2010
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kozakai, Osamu, Mita, Hiroyuki
• Granted Patent: US 8,860,254 B2
• Time in Patent Office: Days
• 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 said storage body includes

a main body,

a first storage portion formed within said main body and storing therein said 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 said main body, the electric power of said power feeding portion stored in said first storage portion being adapted to be fed from said at least one second storage portion, and

in said main body, at least a magnetically shielding portion is formed in an outer peripheral portion, and said at least one second storage portion forms a magnetically closed space in a state of being stored in said main body.

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

said storage body includes a detecting portion detecting whether said second storage portion is in a state of being stored or retrieved in or from said main body, and

said power feeding portion includes a control portion carrying out control in such a way that the power feeding is carried out when said detecting portion detects that said second storage portion is in the state of being stored in said main body, and the power feeding is stopped when said detecting portion detects that said second storage portion is in the state of being retrieved from said main body.

3. The power feeding apparatus according to claim 1, wherein

an electric field shielding portion is formed in an outer peripheral portion of said storage body to form an electromagnetically shielding closed space in a state in which said second storage portion is stored in said main body.

4. The power feeding apparatus according to claim 1, wherein

in said storage body, the plural second storage portions are laminated in such a way that distances to said first storage portion become equal to one another.

5. The power feeding apparatus according to claim 1, wherein

in said storage body, the plural second storage portions are laminated in such a way that distances to said first storage portion become different from one another.

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

in said storage body, said first storage portion is formed as a hinge portion storing therein 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 the plural second storage portions,

power transmitting coil portions corresponding to the plural second storage portions, respectively, are disposed in said hinge portion, and

said power transmitting coil portions are selectively driven.

8. A wireless power feeding system, comprising:

a power feeding apparatus; and

a power receiving apparatus receiving an electric power fed from said power feeding apparatus with a magnetic field sympathetic resonance relationship,

wherein said power feeding apparatus includes

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

a storage body storing therein said power feeding portion,

said storage body includes

a main body,

a first storage portion formed within said main body and storing therein said 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 said main body, the electric power of said power feeding portion stored in said first storage portion being adapted to be fed from said at least one second storage portion, and

in said main body, at least a magnetically shielding portion is formed in an outer peripheral portion, and said at least one second storage portion forms a magnetically closed space in a state of being stored in said main body.

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

said storage body includes a detecting portion detecting whether said second storage portion is in a state of being stored or retrieved in or from said main body, and

said power feeding portion includes a control portion carrying out control in such a way that the power feeding is carried out when said detecting portion detects that said second storage portion is in the state of being stored in said main body, and the power feeding is stopped when said detecting portion detects that said second storage portion is in the state of being retrieved from said main body.

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

an electric field shielding portion is formed in an outer peripheral portion of said storage body to form an electromagnetically shielding closed space in a state in which said second storage portion is stored in said main body.

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

in said storage body, the plural second storage portions are laminated in such a way that distances to said first storage portion become equal to one another.

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

in said storage body, the plural second storage portions are laminated in such a way that distances to said first storage portion become different from one another.

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 storing therein said power feeding portion, 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 the plural second storage portions,

power transmitting coil portions corresponding to the plural second storage portions, respectively, are disposed in said hinge portion, and

said power transmitting coil portions are selectively driven.