Power transmission system and power receiving jacket

• US 8,686,599 B2
• Filed: 04/08/2013
• Issued: 04/01/2014
• Est. Priority Date: 04/20/2011
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: Kato, Kazuya, Tsuchiya, Takanori
• Primary Examiner(s): Jackson, Stephen W
• Assistant Examiner(s): VU, TOAN T
• Application Number:
  US13/858,694
• Publication Number:
  US 20130249313A1
• Time in Patent Office: 358 Days
• Field of Search: 307/107
• US Class Current: 307/109
• CPC Class Codes: H01F 27/42 Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils circuits for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output H02P13/00; impedance networks H03H
• CPC Class Codes: H02J 50/05 using capacitive coupling
• CPC Class Codes: H02M 3/06 using resistors or capacitors, e.g. potential divider

Abstract

A power transmission system and a power receiving jacket is provided that enhances the transmission efficiency of electric power with a simple structure and without increasing manufacturing costs. The power transmission system includes a power transmitting device having a first passive electrode, a first active electrode whose potential is higher than the first passive electrode, and a voltage generation circuit connected between the first passive electrode and the first active electrode, a power receiving jacket having a second active electrode and a power receiving circuit module connected to the second active electrode, and an electronic device attachable to the power receiving jacket. The electronic device includes a chassis having a conductive portion formed from a conductive material along a surface facing the first passive electrode, and the power receiving circuit module is electrically connected between the conductive portion and the second active electrode.

Claims

1. A power transmission system comprising:

a power transmitting device having a first passive electrode, a first active electrode with a potential higher than the first passive electrode, and a voltage generation circuit coupled between the first passive electrode and the first active electrode;

a power receiving jacket having a second active electrode and a power receiving circuit module coupled to the second active electrode; and

an electronic device attachable to the power receiving jacket,

wherein the electronic device includes a chassis with a conductive portion disposed on a surface of the chassis, such that when the power receiving jacket is attached to the power transmitting device, the conductive portion of the chassis faces the first passive electrode and the power receiving circuit module is electrically coupled between the conductive portion and the second active electrode.

2. The power transmission system according to claim 1, wherein the power receiving jacket includes a second passive electrode electrically coupled to the conductive portion.

3. The power transmission system according to claim 2, wherein the second passive electrode is electrically connected to the first passive electrode when the power receiving jacket is attached to the power transmitting device.

4. The power transmission system according to claim 1,

wherein the first active electrode and the first passive electrode are both provided in a surface to face the power receiving jacket when the power receiving jacket is attached to the power transmitting device, and

wherein the second active electrode in the power receiving jacket is positioned to face the first active electrode in the power transmitting device.

5. The power transmission system according to claim 4, wherein the first passive electrode is positioned adjacent to a first end of the first active electrode, and wherein the power transmitting device further comprises a third passive electrode that is positioned on a second end of the first active electrode opposite the first end.

6. The power transmission system according to claim 1, wherein the surface of the chassis is one of an outer surface and an inner surface and a conductive material is disposed on at least one of the outer surface and the inner surface.

7. The power transmission system according to claim 6, wherein the conductive material is selected from the group consisting of copper, gold and silver.

8. A power receiving unit for receiving electric power in a non-contact manner from a power transmitting device that includes a first passive electrode, a first active electrode with a potential higher than the first passive electrode, and a voltage generation circuit coupled between the first passive electrode and the first active electrode, the power receiving unit comprising:

a power receiving jacket having a second active electrode;

a power receiving circuit module configured to be coupled to the second active electrode; and

an electronic device attachable to the power receiving jacket, the electronic device including a chassis with a conductive portion disposed on a surface of the chassis, and

wherein, when the electronic device is attached to the power receiving jacket and the power receiving jacket is attached to the power transmitting device, the conductive portion of the chassis faces the first passive electrode and the power receiving circuit module is electrically coupled between the conductive portion and the second active electrode.

9. The power receiving unit according to claim 8, wherein the power receiving jacket further comprises a second passive electrode that is electrically connected to the first passive electrode of the power transmitting device when the power receiving jacket is attached to the power transmitted device.

10. The power receiving unit according to claim 8, wherein the second active electrode of the power receiving jacket is disposed at a position to face the first active electrode of the power transmitting device when the power receiving unit is attached to the power transmitting device.

11. The power receiving unit according to claim 8, wherein the surface of the chassis of the electronic device is one of an outer surface and an inner surface and a conductive material is disposed on at least one of the outer surface and the inner surface.

12. The power receiving unit according to claim 11, wherein the conductive material is selected from the group consisting of copper, gold and silver.

13. A power receiving jacket for receiving electric power in a non-contact manner from a power transmitting device that includes a first passive electrode, a first active electrode with a potential higher than the first passive electrode, and a voltage generation circuit coupled between the first passive electrode and the first active electrode, the power receiving jacket comprising:

a second active electrode; and

a power receiving circuit module configured to be coupled to the second active electrode,

wherein the power receiving jacket is attachable to an electronic device that includes a chassis with a conductive portion disposed on a surface of the chassis, and

wherein, when the electronic device is attached to the power receiving jacket and the power receiving jacket is attached to the power transmitting device, the conductive portion of the chassis faces the first passive electrode and the power receiving circuit module is electrically coupled between the conductive portion and the second active electrode.

14. The power receiving jacket according to claim 13, further comprising a second passive electrode that is electrically connected to the first passive electrode of the power transmitting device when the power receiving jacket is attached to the power transmitted device.

15. The power receiving jacket according to claim 13, wherein the second active electrode of the power receiving jacket is disposed at a position to face the first active electrode of the power transmitting device when the power receiving jacket is attached to the power transmitting device.

16. The power receiving jacket according to claim 13, wherein the surface of the chassis of the electronic device is one of an outer surface and an inner surface and a conductive material is disposed on at least one of the outer surface and the inner surface.

17. The power receiving jacket according to claim 16, wherein the conductive material is selected from the group consisting of copper, gold and silver.