Resonance type power transmission device and resonance type power multiplex transmission system

Patent metadata

Field	Value
Publication number	US-9712000-B2
Application number	US-201414910955-A
Country	US
Kind code	B2
Filing date	Aug 20, 2014
Priority date	Aug 23, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

Disclosed is a resonance type power transmission device that transmits electric power by using a resonator for transmission 3 and a resonator for reception 4 whose resonance conditions are matched to each other, the resonance type power transmission device including a transmission power supply 1 to supply electric power, a transmission antenna 2 to transmit the electric power from the transmission power supply 1 , a conductive substance 7 to establish an electrical single point connection between the resonator for transmission 3 and the resonator for reception 4 , a reception antenna 5 to receive the electric power from the transmission antenna 2 via the resonator for transmission 3 and the resonator for reception 4 , and a reception power supply 6 to receive the electric power received by the reception antenna 5.

First claim

The invention claimed is:

1. A resonance type power transmission device comprising:
a transmission resonance device;
a reception resonance device whose resonance condition is matched to that of said transmission resonance device; and
a conductive substance, insulated from ground, to establish an electrical single point connection as the only connection between respective hot sides or return sides of said transmission resonance device and said reception resonance device.

2. The resonance type power transmission device according to claim 1 , wherein said transmission resonance device includes a transmission antenna and a transmission resonator which are configured separately, and said reception resonance device includes a reception antenna and a reception resonator which are configured separately.

3. The resonance type power transmission device according to claim 2 , wherein each of said transmission and reception antennas is configured with two or more coils.

4. The resonance type power transmission device according to claim 1 , wherein said resonance type power transmission device comprises a relay resonator disposed between said transmission resonance device and said reception resonance device, and whose resonance condition is matched to said resonance conditions.

5. The resonance type power transmission device according to claim 1 , wherein a plurality of said reception resonance devices are disposed, and said conductive substance connects between said transmission resonance device and each of said plurality of reception resonance devices.

6. The resonance type power transmission device according to claim 1 , wherein said conductive substance is divided into two portions, and one of the portions is connected to said transmission resonance device and the other portion is connected to said reception resonance device.

7. The resonance type power transmission device according to claim 1 , wherein said transmission resonance device and said reception resonance device perform magnetic-field resonance.

8. The resonance type power transmission device according to claim 1 , wherein said transmission resonance device and said reception resonance device perform electric-field resonance.

9. The resonance type power transmission device according to claim 1 , wherein said transmission resonance device and said reception resonance device perform electromagnetic induction.

10. The resonance type power transmission device according to claim 1 , wherein said resonance type power transmission device includes a reception power supply circuit to change the resonance condition of said reception resonance device according to a transmission state of said reception resonance device.

11. The resonance type power transmission device according to claim 1 , wherein said resonance type power transmission device includes a transmission power supply circuit to change the resonance condition of said transmission resonance device according to a transmission state of said transmission resonance device.

12. The resonance type power transmission device according to claim 1 , wherein the transmission resonance device and the reception resonance device are independently grounded.

13. A resonance type power multiplex transmission system including a plurality of resonance type power transmission devices each comprising a transmission resonance device and a reception resonance device whose resonance condition is matched to that of said transmission resonance device, each of said resonance type power transmission devices comprising:
a conductive substance, insulated from ground, to establish an electrical single point connection as the only connection between respective hot sides or return sides of said transmission resonance device and said reception resonance device.

14. The resonance type power multiplex transmission system according to claim 13 , wherein the conductive substances of said plurality of resonance type power transmission devices are commonized among them.

15. A resonance type power transmission device comprising:
a transmission resonance device; and
a connector to make a single point connection between a hot side or a return side, which is insulated from ground, of said transmission resonance device and a conductive substance.

16. A resonance type power reception device comprising:
a reception resonance device; and
a connector to make a single point connection between a hot side or a return side, which is insulated from ground, of said reception resonance device and a conductive substance.

Assignees

• Mitsubishi Electric Eng

Inventors

• Akuzawa Yoshiyuki
• Ito Yuki

Classifications

• H02J50/05

  using capacitive coupling · CPC title

• H02J50/70

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title

• H02J50/12 Primary

  of the resonant type · CPC title

• H02J50/10

  using inductive coupling · CPC title

• H02J50/50

  using additional energy repeaters between transmitting devices and receiving devices · CPC title