Wireless Charger

• US 20170025886A1
• Filed: 05/27/2016
• Published: 01/26/2017
• Est. Priority Date: 06/05/2015
• Status: Active Grant

• Current Assignee: Pass & Seymour Incorporated (Legrand SA)
• Original Assignee: Pass & Seymour Incorporated (Legrand SA)
• Inventors: Rohmer, Richard M., Mueller, Brian, Roy, Thomas F.
• Granted Patent: US 10,340,722 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02G 3/14 Fastening of cover or lid to box
• CPC Class Codes: H02J 50/00 Circuit arrangements or systems for wireless supply or distribution of electric power
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/0049 Detection of fully charged condition

Abstract

The present invention is directed to an electrical wiring assembly that includes a plurality of line terminals configured to be coupled to a source of AC power. A circuit assembly is coupled to the plurality of line terminals. The circuit assembly includes a control circuit coupled to at least one electro-magnetic coil, the control circuit being configured to provide an electrical drive signal to the at least one electro-magnetic coil in accordance with a predetermined wireless charging regimen. The at least one electro-magnetic coil is configured to propagate a magnetic field in accordance with the electrical drive signal. A wall plate assembly is configured to accommodate the circuit assembly therewithin, the wall plate assembly including a charging interface region configured to accommodate a portable electronic device. The charging interface region is configured to position the at least one electro-magnetic coil proximate the portable electronic device so that the portable electronic device is disposed within the propagated magnetic field in accordance with the predetermined wireless charging regimen.

Claims

1. An electrical wiring assembly comprising:

a plurality of line terminals configured to be coupled to a source of AC power;

a circuit assembly coupled to the plurality of line terminals, the circuit assembly including a control circuit coupled to at least one electro-magnetic coil, the control circuit being configured to provide an electrical drive signal to the at least one electro-magnetic coil in accordance with a predetermined wireless charging regimen, the at least one electro-magnetic coil being configured to propagate a magnetic field in accordance with the electrical drive signal; and

a wall plate assembly configured to accommodate the circuit assembly therewithin, the wall plate assembly including a charging interface region configured to accommodate a portable electronic device, the charging interface region being configured to position the portable electronic device proximate the at least one electro-magnetic coil so that the portable electronic device is disposed within the propagated magnetic field in accordance with the predetermined wireless charging regimen.

2. The assembly of claim 1, further comprising an electrical wiring device, and wherein the wall plate assembly further comprises an electrical wiring device region configured to accommodate the electrical wiring device.

3. The assembly of claim 2, wherein the electrical wiring device is selected from a group of electrical wiring devices that include an outlet receptacle, an electric switch, a ground fault circuit interrupter (GFCI), an arc fault circuit interrupter (AFCI), a transient voltage surge suppressor (TVSS), a surge protective device (SPD), a dimmer, a fan speed control, a night light, a low voltage port, or a USB port.

4. The assembly of claim 2, wherein the electrical wiring device is configured to be installed in an outlet box attached to a wall structure, the wall plate assembly including a mounting portion configured to attach the wall plate assembly to the electrical wiring device or the wall structure.

5. The assembly of claim 4, wherein the wall plate assembly is configured to substantially conceal the mounting portion after installation.

6. The assembly of claim 1, wherein the charging interface region includes a cradle portion, the cradle portion being configured to accommodate the portable electronic device.

7. The assembly of claim 6, wherein a position of the cradle portion is user adjustable.

8. The assembly of claim 7, wherein the cradle portion includes at least one spring-loaded gripper configured to clamp the portable electronic device against an outer surface of the charging interface region the at least one spring-loaded gripper is configured to accommodate a range of portable electronic device sizes.

9. The assembly of claim 8, wherein the at least one spring-loaded gripper includes two grippers whose motions are controlled in equal and opposite directions by a linkage structure to accommodate the portable electronic device.

10. The assembly of claim 6, wherein the circuit assembly further includes an electrical switch coupled to the cradle portion, the electrical switch activating the electrical drive signal when the cradle portion is positioned to accommodate the portable electronic device.

11. The assembly of claim 10, wherein the electrical drive signal is provided to the at least one electro-magnetic coil when there is a predetermined communication signal provided by the portable electronic device to a receiver disposed in the circuit assembly.

12. The assembly of claim 11, wherein the electrical drive signal stops being provided when the predetermined communication signal interrupts due to a battery disposed in the portable electronic device reaching a charged state.

13. The device of claim 12, wherein the control circuit is configured to prevent resumption of the electrical drive signal for a predetermined period of time after the portable electronic device has reached the charged state.

14. The assembly of claim 1, wherein the electrical drive signal is provided to the at least one electro-magnetic coil when there is a predetermined communication signal provided by the portable electronic device to a receiver disposed in the circuit assembly.

15. The assembly of claim 14, wherein the electrical drive signal stops being provided when the predetermined communication signal interrupts due to a battery disposed in the portable electronic device reaching a charged state.

16. The device of claim 15, wherein the control circuit is configured to prevent resumption of the electrical drive signal for a predetermined period of time after the portable electronic device has reached the charged state.

17. The assembly of claim 1, wherein the control circuit includes a power supply circuit.

18. The assembly of claim 1, wherein the wall plate assembly includes a mounting portion configured to be coupled to a wall having a planar wall surface, the charging interface region having a substantially planar outer surface configured to accommodate the portable electronic device, the outer surface being substantially parallel to the wall surface.

19. The assembly of claim 1, wherein the wall plate assembly includes a mounting portion configured to be coupled to a mounting surface, and wherein the charging interface region includes a surface inclined relative to the mounting surface.

20. The assembly of claim 19 wherein an inclination angle of the surface is user adjustable.

21. The assembly of claim 19, further comprising an electrical wiring device, and wherein the wall plate assembly further comprises an electrical wiring device region having an outer surface, wherein the outer surface is substantially parallel with the mounting surface.

22. The assembly of claim 1, further comprising an electrical wiring device, and wherein the wall plate assembly further comprises an electrical wiring device region, the user accessible electrical wiring device region and the charging interface region having outer surfaces that are substantially co-planar.

23. The assembly of claim 1, wherein the wall plate assembly includes a mounting portion configured to be coupled to a mounting surface, and wherein the charging interface region is recessed relative to the mounting surface.

24. The assembly of claim 1, wherein the predetermined wireless charging regimen includes a magnetic induction charging regimen, a resonant inductive charging regimen, or an RF wireless charging regimen.

25. The assembly of claim 1, further comprising a power supply circuit coupled to the circuit assembly, the power supply circuit being configured to convert an AC power signal provided by the source of AC power into a low voltage power signal.

26. The device of claim 25, further including an electrical wiring device, wherein the wall plate assembly further comprises an electrical wiring device region configured to accommodate the electrical wiring device, the power supply circuit being disposed in the electrical wiring device.

27. The device of claim 26, wherein the power supply circuit is coupled to at least one low voltage output port.

28. The assembly of claim 27, wherein the charging interface region is configured to hold a rechargeable portable device receiving power via a plug deriving power from the at least one low voltage output port.

29. The assembly of claim 27, wherein the at least one low voltage output port is disposed in the electrical wiring device region.

30. The device of claim 29, wherein the at least one low voltage output port is disposed between two receptacles disposed in the electrical wiring device region.

31. The assembly of claim 1, wherein the charging interface region includes a mounting portion configured to be coupled to a wall mounting surface, the mounting portion being substantially flush with respect to the wall mounting surface.

32. The assembly of claim 31, wherein the mounting portion includes one or more fastening elements configured to affix the charging interface region to the wall mounting surface.

33. The assembly of claim 31, wherein the wall plate assembly further comprises an electrical wiring device region configured to accommodate an electrical wiring device, the electrical wiring device being configured to be disposed within a device box installed within the wall mounting surface.

34. The assembly of claim 1, wherein the electrical wiring device includes a power supply coupled to a low voltage port, at least a portion of the circuit assembly being configured to receive a power input signal from the power supply.

35. An electrical wiring assembly comprising:

a plurality of line terminals configured to be coupled to a source of AC power;

a circuit assembly coupled to the plurality of line terminals, the circuit assembly including a control circuit coupled to at least one electro-magnetic coil, the control circuit being configured to provide an electrical drive signal to the at least one electro-magnetic coil in accordance with a predetermined wireless charging regimen, the at least one electro-magnetic coil being configured to propagate a magnetic field in accordance with the electrical drive signal; and

a wall plate assembly configured to accommodate the circuit assembly therewithin, the wall plate assembly including a charging interface region configured to accommodate a portable electronic device so that the portable electronic device is disposed within the propagated magnetic field in accordance with the predetermined wireless charging regimen and an electrical wiring device, the wall plate assembly further comprising an electrical wiring device region configured to accommodate the electrical wiring device.

36. The assembly of claim 35, wherein the electrical wiring device is configured to be installed in an outlet box attached to a wall structure, the wall plate assembly including a mounting portion configured to attach the wall plate assembly to the electrical wiring device or the wall structure.

37. The assembly of claim 35, wherein the wall plate assembly is configured to substantially conceal the mounting portion after installation.

38. The assembly of claim 35, wherein the wall plate assembly includes a user adjustable cradle portion being configured to position the portable electronic device proximate the at least one electro-magnetic coil.

39. The assembly of claim 38, wherein the circuit assembly further includes an electrical switch coupled to the cradle portion, the electrical switch activating the electrical drive signal when the cradle portion is positioned to accommodate the portable electronic device.

40. The assembly of claim 35, wherein the electrical drive signal is provided upon successful communication between the portable electronic device and a receiver disposed in the circuit assembly.

41. The assembly of claim 35, wherein an outer wall of the charging interface region or an outer wall of the wiring device region is parallel to a wall surface to which the wall plate assembly is mounted.

42. The assembly of claim 35, wherein circuit assembly includes a power supply circuit disposed in the electrical wiring device, the power supply circuit being coupled to at least one low voltage output port.

43. The assembly of claim 42, wherein the at least one low voltage output port is disposed adjacent at least one receptacle disposed in the electrical wiring device region.

44. The assembly of claim 35, wherein the electrical wiring device includes a pair of mounting ears configured for attaching the electrical wiring device to an outlet box, the charging interface region not being disposed between the pair of mounting ears.

45. The assembly of claim 44, wherein the outlet box is a single gang outlet box.

46. The assembly of claim 44, wherein circuit assembly includes a power supply circuit disposed in the electrical wiring device coupled to at least one low voltage output port disposed between the pair of mounting ears.