RESONANT TYPE POWER TRANSMISSION ANTENNA DEVICE

• US 20160315383A1
• Filed: 12/26/2013
• Published: 10/27/2016
• Est. Priority Date: 12/26/2013
• Status: Active Grant

• Current Assignee: Mitsubshi Electric Engineering Company Limited (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubshi Electric Engineering Company Limited (Mitsubishi Electric Corporation)
• Inventors: AKUZAWA, Yoshiyuki, SAKAI, Kiyohide, EZOE, Toshihiro, ITO, Yuki
• Granted Patent: US 10,003,128 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: H01Q 1/526 Electromagnetic shields
• CPC Class Codes: H01Q 21/00 Antenna arrays or systems arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system H01Q3/00
• CPC Class Codes: H01Q 3/26 varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture H01Q3/12, H01Q3/22, H01Q3/24 take precedence
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

Disclosed is a resonant type power transmission antenna device provided with a plurality of transmission antennas 12 and a plurality of reception antennas 13, the resonant type power transmission antenna device including a transmission shield antenna 22 arranged between the plurality of transmission antennas 12, a reception shield antenna 23 arranged between the plurality of reception antennas 13, transmission and reception circuits 21 and 24 to operate the transmission and reception shield antennas 22 and 23 in electromagnetic field resonance having a phase opposite to that of the transmission and reception antennas 12 and 13 respectively adjacent to the transmission and reception shield antennas.

Claims

1. A resonant type power transmission antenna device provided with a plurality of first transmission antennas and a plurality of first reception antennas, said resonant type power transmission antenna device comprising:

a second transmission antenna arranged between said plurality of first transmission antennas;

a second reception antenna arranged between said plurality of first reception antennas;

a transmission and reception circuit to operate said second transmission and reception antennas in electromagnetic field resonance having a phase opposite to that of said first transmission and reception antennas respectively adjacent to said second transmission and reception antennas.

4. The resonant type power transmission antenna device according to claim 1, wherein said first transmission and reception antennas are arranged opposite to each other, and said second transmission and reception antennas are arranged opposite to each other.

6. The resonant type power transmission antenna device according to claim 1, wherein said first transmission and reception antennas are arranged while being engaged with each other, and said second transmission and reception antennas are arranged while being engaged with each other.

10. The resonant type power transmission antenna device according to claim 1, wherein said transmission and reception antennas and said second transmission and reception antennas operate according to magnetic-field resonance.

12. The resonant type power transmission antenna device according to claim 1, wherein said transmission and reception antennas and said second transmission and reception antennas operate according to electric-field resonance.

14. The resonant type power transmission antenna device according to claim 1, wherein said transmission and reception antennas and said second transmission and reception antennas operate according to electromagnetic induction.

2. A resonant type power transmission antenna device provided with a first transmission antenna and a first reception antenna, said resonant type power transmission antenna device comprising:

a second transmission antenna arranged outwardly with respect to a power transmission direction of said first transmission antenna;

a second reception antenna arranged outwardly with respect to a power transmission direction of said first reception antenna; and

a transmission and reception circuit to operate said second transmission and reception antennas in electromagnetic field resonance having a phase opposite to that of said first transmission and reception antennas.

3. The resonant type power transmission antenna device according to claim 2, wherein a plurality of said first transmission and reception antennas are disposed, and said second transmission and reception antennas are arranged between said plurality of first transmission and reception antennas, and wherein said transmission and reception circuit operates said second transmission and reception antennas arranged between said plurality of first transmission and reception antennas in electromagnetic field resonance having a phase opposite to that of said first transmission and reception antennas.

5. The resonant type power transmission antenna device according to claim 2, wherein said first transmission and reception antennas are arranged opposite to each other, and said second transmission and reception antennas are arranged opposite to each other.

7. The resonant type power transmission antenna device according to claim 2, wherein said first transmission and reception antennas and said second transmission and reception antennas are arranged while being engaged with each other.

8. The resonant type power transmission antenna device according to claim 5, wherein said resonant type power transmission antenna device includes a shielding member disposed outside said second transmission and reception antennas and connected to a GND potential.

9. The resonant type power transmission antenna device according to claim 7, wherein said resonant type power transmission antenna device includes a shielding member disposed outside said second transmission and reception antennas and connected to a GND potential.

11. The resonant type power transmission antenna device according to claim 2, wherein said transmission and reception antennas and said second transmission and reception antennas operate according to magnetic-field resonance.

13. The resonant type power transmission antenna device according to claim 2, wherein said transmission and reception antennas and said second transmission and reception antennas operate according to electric-field resonance.

15. The resonant type power transmission antenna device according to claim 2, wherein said transmission and reception antennas and said second transmission and reception antennas operate according to electromagnetic induction.