Non-contact power supply circuit

• US 9,941,744 B2
• Filed: 11/09/2015
• Issued: 04/10/2018
• Est. Priority Date: 05/09/2013
• Status: Active Grant

• Current Assignee: Tyco Electronics Company Limited (TE Connectivity Limited)
• Original Assignee: Tyco Electronics Company Limited (TE Connectivity Limited)
• Inventors: Dai, Feng, Fan, Mingjie, Song, Yuming, Wang, Shaoyong
• Primary Examiner(s): DIAO, M BAYE
• Application Number:
  US14/935,827
• Publication Number:
  US 20160064143A1
• Time in Patent Office: 883 Days
• Field of Search: 307104, 320108
• 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 50/12 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 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

A power supply circuit is disclosed. The power supply circuit includes a primary circuit having at least one transmitting coil and a secondary circuit having at least one receiving coil. The primary circuit and secondary circuit are electromagnetically coupled. The total quantity of the at least one transmitting coil and the at least one receiving coil is greater than two.

Claims

1. A power supply circuit, comprising:

a primary circuit having at least one transmitting coil; and

a secondary circuit having at least one receiving coil, the at least one receiving coil spaced apart from the at least one transmitting coil;

wherein

the primary circuit and secondary circuit are electromagnetically coupled, and the total quantity of the at least one transmitting coil and the at least one receiving coil is greater than two, a plurality of transmitting coils are disposed on both sides of the at least one receiving coil or a plurality of receiving coils are disposed on both sides of the at least one transmitting coil.

2. The power supply circuit according to claim 1, wherein the normal direction of the at least one transmitting coil and the normal direction of the at least one receiving coil are the same.

3. The power supply circuit according to claim 1, wherein the normal direction of the at least one transmitting coil and the normal direction of the at least one receiving coil have a first angle.

4. The power supply circuit according to claim 1, wherein a plurality of receiving coils are disposed opposite a plurality of transmitting coils.

5. The power supply circuit according to claim 1, wherein a plurality of transmitting coils are positioned to form a passageway.

6. The power supply circuit according to claim 5, wherein the at least one receiving coil is disposed within the passageway and translationally movable within the passageway.

7. The power supply circuit according to claim 1, wherein a plurality of transmitting coils are positioned to form a ring shape.

8. The power supply circuit according to claim 7, wherein the at least one receiving coil is disposed within the transmitting coil ring and rotationally moveable with respect to the transmitting coil ring.

9. The power supply circuit according to claim 8, wherein a plurality of receiving coils are positioned to form a ring shape.

10. The power supply circuit according to claim 8, wherein the normal direction of the at least one receiving coil is parallel to the normal direction of the transmitting coils, and the at least one receiving coil is rotationally movable around the normal direction of the at least one transmitting coil or the transmitting coils are rotationally movable around the normal direction of the at least one receiving coil.

11. The power supply circuit according to claim 1, wherein the secondary circuit further includes a rectifier electrically connected to the at least one receiving coil.

12. The power supply circuit according to claim 11, wherein the secondary circuit further includes a transformer electrically connected to the rectifier.

13. The power supply circuit according to claim 12, wherein the secondary circuit further includes a load electrically connected to the transformer.

14. The power supply circuit according to claim 13, wherein the load is a rechargeable battery.

15. The power supply circuit according to claim 1, wherein the quantity of the at least one receiving coil is greater than or equal to two and the receiving coils are connected in series.

16. The power supply circuit according to claim 1, wherein the quantity of the at least one transmitting coil is larger than or equal to two and the transmitting coils are connected in parallel.

17. The power supply circuit according to claim 1, wherein the quantity of the at least one transmitting coil is larger than or equal to two and the transmitting coils are connected in series.

18. A power supply circuit, comprising:

a primary circuit having at least one transmitting coil; and

a secondary circuit having at least one receiving coil, the at least one receiving coil spaced apart from the at least one transmitting coil and a normal direction of the at least one transmitting coil and a normal direction of the at least one receiving coil having a first angle;

wherein

the primary circuit and secondary circuit are electromagnetically coupled, and the total quantity of the at least one transmitting coil and the at least one receiving coil is greater than two.

19. A power supply circuit, comprising:

a primary circuit having at least one transmitting coil; and

a secondary circuit having at least one receiving coil, the at least one receiving coil spaced apart from the at least one transmitting coil;

wherein

the primary circuit and secondary circuit are electromagnetically coupled, and the total quantity of the at least one transmitting coil and the at least one receiving coil is greater than two, a plurality of transmitting coils are positioned to form a passageway and the at least one receiving coil is disposed within the passageway and translationally movable within the passageway.

20. A power supply circuit, comprising:

a primary circuit having at least one transmitting coil; and

a secondary circuit having at least one receiving coil, the at least one receiving coil spaced apart from the at least one transmitting coil;

wherein

the primary circuit and secondary circuit are electromagnetically coupled, and the total quantity of the at least one transmitting coil and the at least one receiving coil is greater than two, a plurality of transmitting coils are positioned to form a ring shape.

21. The power supply circuit according to claim 20, wherein the at least one receiving coil is disposed within the transmitting coil ring and rotationally moveable with respect to the transmitting coil ring.

22. The power supply circuit according to claim 21, wherein a plurality of receiving coils are positioned to form a ring shape.

23. The power supply circuit according to claim 21, wherein the normal direction of the at least one receiving coil is parallel to the normal direction of the transmitting coils, and the at least one receiving coil is rotationally movable around the normal direction of the at least one transmitting coil or the transmitting coils are rotationally movable around the normal direction of the at least one receiving coil.