IP Library › Granted Patent US 12,278,501
Granted Patent B2
US 12,278,501 · App. 18/502,738 · Granted Apr 15, 2025

Wireless power transfer system for simultaneous transfer to multiple devices

Inventors: Pavel Shostak (San Diego, CA); Jason Luzinski (Chicago, IL); Md. Nazmul Alam (Glendale Heights, IL); Mark D. Melone (Frankfort, IL); Matt Zamborsky (Chicago, IL); Alberto Peralta (Chicago, IL)
Assignee: NuCurrent, Inc.
H02J50/40H02J50/10H02J50/90
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Quick Facts
Patent No.
US 12,278,501
App. No.
18/502,738
Granted
Apr 15, 2025
Kind
B2
Abstract

The present application relates to an apparatus which comprises a wireless power transmission system. This system comprises features which allow it to transfer more power wirelessly to multiple devices simultaneously, each at extended distances than other systems operating in the same frequency range. The system including heat dissipation features, allowing the system to operate effectively in elevated-temperature environments and to transfer power at higher levels and/or greater distances than a typical power-transfer system. The system also may include design features to withstand mechanical shocks, stresses, and impacts for use in a rugged environment. The system may include features to reduce electromagnetic interference (EMI) and/or specially shaped components with magnetic/ferrimagnetic properties that enhance performance. Other potential features include power conditioning by combining, within one circuit or one board, multiple elements that protect against excessive current, over-voltage, and/or reverse voltage.

Claims (40)

1. A wireless power transmission system configured for simultaneous wireless power transfer to at least two wireless power receiver systems, the wireless power transmission system comprising:

a first wireless power transmitter comprising:

a first power transmitting coil configured to transmit electrical power to a first wireless power receiver system; and

a first wireless power transfer circuit electrically connectable to the first power transmitting coil and including a first controller and a first driving circuit;

a second wireless power transmitter comprising:

a second power transmitting coil configured to transmit electrical power to a second wireless power receiver system; and

a second wireless power transfer circuit electrically connectable to the second power transmitting coil and including a second controller and a second driving circuit, wherein a configuration of the first power transmitting coil is different from a configuration of the second power transmitting coil; and

a housing including a plurality of alignment features, wherein the first wireless power transmitter and second wireless power transmitter reside within the housing, wherein the plurality of alignment features includes a first alignment feature operatively associated with the first wireless power transmitter and a second alignment feature operatively associated with the second wireless power transmitter, and wherein the second alignment feature provides alignment between the second power transmitting coil and the second wireless power receiver system, and wherein the second wireless power receiver system has a different configuration from the first wireless power receiver system.

2. The wireless power transmission system of claim 1 , wherein the second alignment feature is defined by a non-flat surface of the housing that comprises a docking structure for the second wireless power receiver system.

3. The wireless power transmission system of claim 2 , wherein the configuration of the second wireless power receiver system comprises at least one of different size, shape, profile, contour, form, outline, identity, model, power, frequency, or operation.

4. The wireless power transmission system of claim 3 , wherein the first wireless power transmitter is operable over a first frequency range and capable of transferring power in a range of 1 nW (nanowatts) - 30 W (watts), and the second wireless power transmitter is operable over a second frequency range and capable of transferring power in a range of 1 nW-30 W.

5. The wireless power transmission system of claim 1 , wherein the first controller and the first driving circuit are constructed on a first circuit board and the second controller and the second driving circuit are constructed on a second circuit board.

6. The wireless power transmission system of claim 1 further comprising:

a third wireless power transmitter comprising:

a third power transmitting coil configured to transmit electrical power to a third wireless power receiver system; and

a third wireless power transfer circuit electrically connectable to the third power transmitting coil and including a third controller and a third driving circuit.

7. The wireless power transmission system of claim 6 , wherein the first wireless power transmitter is operable over a first frequency range and capable of transferring power in a range of 1 nW-30 W, the second wireless power transmitter is operable over a second frequency range and capable of transferring power in a range of 1 nW-30 W, and the third wireless power transmitter is operable over a third frequency range and capable of transferring power in a range of 1 nW-30 W.

8. The wireless power transmission system of claim 7 , wherein the plurality of alignment features includes a third alignment feature operatively associated with the third wireless power transmitter.

9. The wireless power transmission system of claim 7 , wherein the first frequency range, the second frequency range, and the third frequency range are different.

10. The wireless power transmission system of claim 6 , wherein the first wireless power transfer circuit, the second wireless power transfer circuit, and the third wireless power transfer circuit are constructed on a single circuit board.

11. The wireless power transmission system of claim 6 , wherein the first wireless power transfer circuit is constructed on a first circuit board, the second wireless power transfer circuit is constructed on a second circuit board, and the third wireless power transfer circuit is constructed on a third circuit board.

12. The wireless power transmission system of claim 7 , wherein a configuration of the third power transmitting coil is different from the configuration of the first power transmitting coil and the configuration of the second power transmitting coil.

13. The wireless power transmission system of claim 6 , wherein one or more of the first, second, or third wireless power transfer circuits are constructed on a first circuit board and at least one of the first, second, or third wireless power transfer circuits is constructed on a second circuit board.

14. The wireless power transmission system of claim 6 , wherein each of the first, second, and third wireless power transmitters further includes a magnetic material comprising at least a magnetic backing.

15. The wireless power transmission system of claim 1 , wherein the first wireless power transmitter further includes a t-shaped magnetic material comprising a magnetic core and a magnetic backing and the second wireless power transmitter further includes a magnetic material comprising at least a magnetic backing.

16. A wireless power transmission system configured for simultaneous wireless power transfer to a plurality of wireless power receiver systems, the wireless power transmission system comprising:

a first wireless power transmitter comprising a first power transmitting coil and a magnetic material comprising at least a magnetic backing, the first wireless power transmitter configured to transmit electrical power to a first wireless power receiver system of the plurality of wireless power receiver systems;

a second wireless power transmitter comprising a second power transmitting coil and a magnetic material comprising at least a magnetic backing, the second wireless power transmitter configured to transmit electrical power to a second wireless power receiver system of the plurality of wireless power receiver systems;

a third wireless power transmitter comprising a third power transmitting coil and a magnetic material comprising at least a magnetic backing, the third wireless power transmitter configured to transmit electrical power to a third wireless power receiver system of the plurality of wireless power receiver systems,

wherein the first power transmitting coil, the second power transmitting coil, and the third power transmitting coil are each configured differently;

a wireless power transfer circuit electrically connectable to each of the first, second, and third wireless power transmitters, the wireless power transfer circuit including at least one controller and at least one driving circuit; and

a housing including a plurality of alignment features, wherein each of the first, second and third wireless power transmitters reside within the housing, wherein the plurality of alignment features includes one or more different alignment features operatively associated with each of the first, second, and third wireless power transmitters,

wherein each of the one or more different alignment features operatively associated with each of the first, second, and third wireless power transmitters provides alignment between the respective first, second, and third wireless power transmitters and the respective first, second, and third wireless power receiver systems, and wherein the first, second, and third wireless power receiver systems each have a different configuration.

17. The wireless power transmission system of claim 16 , wherein the at least one controller and at least one driving circuit of the wireless power transfer circuit comprises:

a first controller and a first driving circuit for driving the first wireless power transmitter;

a second controller and a second driving circuit for driving the second wireless power transmitter; and

a third controller and a third driving circuit for driving the third wireless power transmitter, and wherein each of the first, second, and third controllers and first, second, and third driving circuits are constructed on one circuit board.

18. The wireless power transmission system of claim 16 , wherein the first wireless power transmitter is operable over a first frequency range, the second wireless power transmitter is operable over a second frequency range, and the third wireless power transmitter is operable over a third frequency range.

19. The wireless power transmission system of claim 18 , wherein the first frequency range, the second frequency range, and the third frequency range are different.

20. The wireless power transmission system of claim 18 , wherein the first wireless power transmitter is capable of transferring power over a first power range of 1 nW-30 W, the second wireless power transmitter is capable of transferring power over a second power range of 1 nW-30 W, and the third wireless power transmitter is capable of transferring power over a third power range of 1 nW-30 W.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 25, 2024
From: SHOSTAK, PAVEL; LUZINSKI, JASON; ALAM, MD. NAZMUL; MELONE, MARK D.; ZAMBORSKY, MATT; PERALTA, ALBERTO
To: NUCURRENT, INC.
Reel/Frame 068084/0637 →
Continuity (3)
Continuation 17367508 · Jul 5, 2021
Continuation 16733516 · Jan 3, 2020
Related Publication 20240348103A1 · Oct 17, 2024
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