Pinless power coupling

Patent metadata

Field	Value
Publication number	US-12308656-B2
Application number	US-202318541255-A
Country	US
Kind code	B2
Filing date	Dec 15, 2023
Priority date	Jan 29, 2007
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

A pinless power plug for receiving wireless power from a pinless power jack may comprise at least one secondary coil for inductively coupling with a primary coil. The primary coil may be associated with the pinless power jack. The primary coil may be shielded behind an insulating layer. The pinless power plug may comprise an annular magnetic anchor arranged around a perimeter of the at least one secondary coil concentric and non-overlapping with the at least one secondary coil. The annular magnetic anchor may be configured to magnetically couple with an annular magnetic snag in the pinless power jack. The pinless power plug may comprise at least one magnet spaced away from and outside of the annular magnetic anchor. The at least one magnet may be configured to magnetically couple with a magnet in the pinless power jack at a particular orientation or angle.

First claim

The invention claimed is:

1. A pinless power plug for receiving wireless power from a pinless power jack, the pinless power plug comprising:
at least one secondary coil for inductively coupling with a primary coil;
a first magnet, having an annular shape, arranged around a perimeter of the at least one secondary coil concentric and non-overlapping with the at least one secondary coil, wherein the first magnet is configured to magnetically couple with a second magnet in the pinless power jack; and
a third magnet spaced away from and outside of the first magnet, wherein the third magnet is configured to magnetically couple with a fourth magnet in the pinless power jack at a particular orientation.

2. The pinless power plug of claim 1 , wherein the third magnet is configured to limit a rotation of the pinless power plug around a central axis of the pinless power jack.

3. The pinless power plug of claim 1 , wherein the first magnet is configured to magnetically couple with the second magnet and maintain alignment between the at least one secondary coil and the primary coil.

4. The pinless power plug of claim 1 , wherein the pinless power plug comprises at least two secondary coils.

5. The pinless power plug of claim 1 , wherein the first magnet is such that, when magnetically coupled with the second magnet, multiple discrete alignment angles are provided.

6. The pinless power plug of claim 1 , wherein the first magnet is such that the pinless power plug maintains alignment with the pinless power jack through 360 degrees of rotation about a central axis.

7. The pinless power plug of claim 1 , wherein the first magnet is arranged to have a configuration such that the first magnet aligns with the second magnet when the pinless power plug is placed on the pinless power jack.

8. The pinless power plug of claim 1 , wherein the first magnet is a permanent magnet or electromagnet.

9. The pinless power plug of claim 1 , wherein the primary coil is shielded behind an insulating layer.

10. A pinless power jack for transmitting wireless power to a pinless power plug, the pinless power jack comprising:
at least one primary coil, shielded on a side of an insulating layer, for inductively coupling with a secondary coil associated with the pinless power plug, wherein the secondary coil is on a different side of the insulating layer;
a first magnet, having an annular shape, arranged around a perimeter of the at least one primary coil concentric and non-overlapping with the at least one primary coil, wherein the first magnet is configured to magnetically couple with a second magnet, having an annular shape, in the pinless power plug; and
a third magnet spaced away from and outside of the first magnet, wherein the third magnet is configured to magnetically couple with a fourth magnet in the pinless power plug at a particular orientation.

11. The pinless power jack of claim 10 , wherein the third magnet is configured to limit a rotation of the pinless power jack around a central axis of the pinless power plug.

12. The pinless power jack of claim 10 , wherein the first magnet is configured to magnetically couple with the second magnet and maintain alignment between the at least one primary coil and the secondary coil.

13. The pinless power jack of claim 10 , wherein the pinless power jack comprises at least two primary coils.

14. The pinless power jack of claim 10 , wherein the first magnet is such that, when magnetically coupled with the second magnet, multiple discrete alignment angles are provided.

15. The pinless power jack of claim 10 , wherein the first magnet is such that the pinless power jack maintains alignment with the pinless power plug through 360 degrees of rotation about a central axis.

16. The pinless power jack of claim 10 , wherein the first magnet is arranged to have a configuration such that the first magnet aligns with the second magnet when the pinless power plug is placed on the pinless power jack.

17. The pinless power jack of claim 10 , wherein the first magnet is a permanent magnet or electromagnet.

Assignees

• Powermat Tech Ltd

Inventors

• Azancot Yossi
• Ben-Shalom Amir
• Greenwald Oola
• Rofe Arik

Classifications

• H01F2027/2809

  on stacked layers · CPC title

• H01F27/2885

  with shields or electrodes (shields or electrodes for pancake coils H01F27/2871; construction of electric or magnetic shields or screens H01F27/36) · CPC title

• H01F27/2804

  Printed windings · CPC title

• H02J50/90

  involving detection or optimisation of position, e.g. alignment · CPC title

• H01F38/14 Primary

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title