ELECTRONIC COMPONENT, POWER FEEDING APPARATUS, POWER RECEIVING APPARATUS, AND WIRELESS POWER FEEDING SYSTEM

• US 20120049645A1
• Filed: 08/23/2011
• Published: 03/01/2012
• Est. Priority Date: 08/30/2010
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kozakai, Osamu
• Granted Patent: US 9,805,862 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/363 made of electrically conductive 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: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

The present disclosure provides an electronic component, including, a coil, and a circuit portion having a grounding terminal and a hot terminal and connected to the coil, wherein the grounding terminal of the circuit portion is connected to one end side of the coil, and the hot terminal of the circuit portion is connected to the other end side of the coil, thereby integrating the circuit portion with the coil.

Claims

1. An electronic component, comprising:

a coil; and

a circuit portion having a grounding terminal and a hot terminal and connected to said coil,

wherein said grounding terminal of said circuit portion is connected to one end side of said coil, and said hot terminal of said circuit portion is connected to the other end side of said coil, thereby integrating said circuit portion with said coil.

2. The electronic component according to claim 1, wherein a grounding electric potential of said circuit portion is connected to a pattern of said coil, and said circuit portion functions as one element determining an inductance value of said coil.

3. The electronic component according to claim 1, wherein said circuit portion is shielded, and a shield structure functions as one element determining an inductance value of said coil.

4. The electronic component according to claim 2, wherein said coil is formed so as to make resonance at a desired frequency, and either said circuit portion or said shield structure functions as one element determining a resonant frequency.

5. The electronic component according to claim 4, wherein a capacitance forming the resonance contains a floating capacitance component of said coil.

6. A power feeding apparatus, comprising:

a power transmitting side coil portion having a coil adapted to transmit an electric power in a wireless manner;

a converter converting an AC electric power into a DC electric power; and

a power transmitting circuit receiving the DC electric power obtained through the conversion in said converter, and generating a high-frequency electric power for wireless power transmission, thereby supplying the resulting high-frequency electric power to said power transmitting side coil portion, wherein

a circuit portion having a grounding terminal and a hot terminal, connected to said coil, and having said power transmitting circuit and at least a part of said converter is formed; and

said grounding terminal of said circuit portion is connected to one end side of said coil, and said hot terminal of said circuit portion is connected to the other end side of said coil, thereby integrating said circuit portion with said coil.

7. The power feeding apparatus according to claim 6, wherein a grounding electric potential of said circuit portion is connected to a pattern of said coil, and said circuit portion functions as one element determining an inductance value of said coil.

8. The power feeding apparatus according to claim 6, wherein said circuit portion is shielded, and a shield structure functions as one element determining an inductance value of said coil.

9. The power feeding apparatus according to claim 7, wherein said coil is formed so as to make resonance at a desired frequency, and either said circuit portion or said shield structure functions as one element determining a resonant frequency.

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

said converter includes an AC/DC converter converting an AC voltage into a DC voltage, and an insulated DC/DC converter converting the DC voltage obtained from said AC/DC converter into a different DC voltage;

and

said circuit portion includes said insulated DC/DC converter and said power transmitting circuit, and said insulated DC/DC converter is connected to said AC/DC converter disposed on a circuit portion side through a power source line.

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

said converter includes an AC/DC converter converting an AC voltage into a DC voltage;

and

said circuit portion includes said insulated AC/DC converter and said power transmitting circuit.

12. The power feeding apparatus according to claim 10, wherein said circuit portion is shielded with a shield case, and said grounding terminal of each of circuit elements included in said circuit portion is connected to said shield case.

13. A power receiving apparatus, comprising:

a power receiving side coil portion having a coil receiving an electric power transmitted in a wireless manner;

a rectifying circuit rectifying the electric power received by said power receiving side coil portion; and

a power source circuit stabilizing the electric power obtained through rectification in said rectifier circuit, and supplying the electric power thus stabilized to a load, wherein

a circuit portion having a grounding terminal and a hot terminal, connected to said coil, and having at least said rectifying circuit and said power source circuit is formed; and

said grounding terminal of said circuit portion is connected to one end side of said coil, and said hot terminal of said circuit portion is connected to the other end side of said coil, thereby integrating said circuit portion with said coil.

14. The power receiving apparatus according to claim 13, wherein a grounding electric potential of said circuit portion is connected to a pattern of said coil, and said circuit portion functions as one element determining an inductance value of said coil.

15. The power receiving apparatus according to claim 13, wherein said circuit portion is shielded, and a shield structure functions as one element determining an inductance value of said coil.

16. The power receiving apparatus according to claim 14, wherein said coil is formed so as to make resonance at a desired frequency, and either said circuit portion or said shield structure functions as one element determining a resonant frequency.

17. The power receiving apparatus according to claim 13, wherein said circuit portion is shielded with a shield case, and said grounding terminal of each of circuit elements included in said circuit portion except for said power source circuit is connected to said shield case.

18. A wireless power feeding system, comprising:

a power feeding apparatus; and

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

said power feeding apparatus includes;

a power transmitting side coil having a coil adapted to transmit an electric power in a wireless manner;

a converter converting an AC electric power into a DC electric power; and

a power transmitting circuit receiving the DC electric power obtained through the conversion in said converter, and generating a high-frequency electric power for wireless power transmission, thereby supplying the resulting high-frequency electric power to said power transmitting side coil portion;

said power receiving apparatus includes;

a power receiving side coil portion having a coil receiving an electric power transmitted in a wireless manner;

a rectifying circuit rectifying the electric power received by said power receiving side coil portion; and

a power source circuit stabilizing the electric power obtained through rectification in said rectifier circuit, and supplying the electric power thus stabilized to a load,

wherein at least one of said power feeding apparatus and said power receiving apparatus includes a circuit portion having a grounding terminal and a hot terminal, said grounding terminal is connected to one end side of said coil, and said hot terminal is connected to the other end side of said coil, thereby integrating said circuit portion with said coil.

19. The wireless power feeding system according to claim 18, wherein

a circuit portion of said power feeding apparatus includes a grounding terminal and a hot terminal, is connected to said power transmitting side coil, and includes said power transmitting circuit and at least a part of said converter;

and

a circuit portion of said power receiving apparatus includes a grounding terminal and a hot terminal, is connected to said power receiving side coil, and includes at least said rectifying circuit and said power source circuit.