Granted Patent B2

US 12,199,699 · App. 18/317,655 · Granted Jan 14, 2025

Inventors: Jason Luzinski (Chicago, IL); Oleg Los (Buffalo Grove, IL)

Assignee: NuCurrent, Inc.

H04B5/79B60L53/12H01F27/28H01F27/2804H01F27/2885H01F38/14H01Q7/04H02J50/005H02J50/12H02J50/23H02J50/402H02J50/70H04B5/26H04B5/266H04B5/48H04B5/72H01F27/36H02J7/00034

Abstract

Claims (25)

1. A structure configured to transmit or receive wireless electrical energy, the structure comprising:

a substrate;

an electrically conductive filar on a surface of the substrate with spaced apart first and second filar ends and comprising a filar thickness oriented about perpendicular to the surface of the substrate, the electrically conductive filar forming a spiral inductor coil having a plurality of turns, wherein the spiral inductor coil is configured to generate an inductance at a resonant frequency; and

an air gap having an air gap width that extends between adjacent spiral inductor coil turns of the plurality of turns,

wherein the plurality of turns forms a multiple figure eight configuration having at least an innermost turn including a first crossover intersection, and an outermost turn including a second crossover intersection, wherein the first crossover intersection and the second crossover intersection are co-located at a center of the spiral inductor coil and each turn of the plurality of turns form a figure eight, and

wherein the spiral inductor coil is constructed so that a ratio of the air gap width to the filar thickness is less than one.

2. The structure of claim 1 , wherein the ratio of the air gap width to the filar thickness is between 0.10 and 0.50.

3. The structure of claim 1 , wherein the ratio of the air gap width to the filar thickness is between 0.30 and 0.40.

4. The structure of claim 1 , wherein a filar width extends between opposing filar sidewalls of the electrically conductive filar, each of the opposing filar sidewalls having an exterior sidewall surface and wherein a filar sidewall angle extends between a first imaginary line that is co-planar to one of the exterior sidewall surfaces and a second imaginary line that is co-planar to a bottom filar surface of the electrically conductive filar.

5. The structure of claim 4 , wherein the filar sidewall angle ranges from 75° and 90°.

6. The structure of claim 1 , further configured within an electronic device.

7. The structure of claim 1 , wherein the resonant frequency is in a range from about 1 kilohertz (kHz) to about 100 megahertz (MHz).

8. The structure of claim 1 , further configured to wirelessly transmit or receive electrical power from about 100 milliwatts (mW) to about 100 Watts (W).

9. The structure of claim 1 , wherein a micro control unit is electrically connected to the spiral inductor coil.

10. The structure of claim 1 , wherein a capacitor is electrically connected to the spiral inductor coil, the capacitor selected from the group consisting of a surface mount capacitor, a parallel plate capacitor, an interdigitated capacitor, and combinations thereof.

11. The structure of claim 1 , wherein at least a portion of the substrate comprises a magnetic field shielding material.

12. The structure of claim 11 , wherein the magnetic field shielding material comprises a ferrite material comprising an element selected from the group consisting of zinc, manganese, nickel, iron, magnesium, copper, and combinations thereof.

13. The structure of claim 11 , wherein the magnetic field shielding material is selected from the group consisting of an amorphous metal, a crystalline metal, a ferrite material having a coercivity from about 1 Ampere/meter to about 1,000 Ampere/meter, a ferrite material having a coercivity greater than 1,000 Ampere/meter, a polymer material, and combinations thereof.

14. The structure of claim 1 , wherein the plurality of turns includes at least one inner turn including a third crossover intersection, and wherein the at least one inner turn forms a figure eight and the third crossover intersection is co-located with the first and second crossover intersections at the center of the spiral inductor coil.

15. The structure of claim 14 , wherein the at least one inner turn is positioned between the innermost turn and the outermost turn.

16. The structure of claim 15 , wherein the plurality of turns are connected by a plurality of perimeter crossover intersections.

17. The structure of claim 16 , wherein the plurality of perimeter crossover intersections includes a first perimeter crossover intersection connecting the innermost turn to the at least one inner turn and a second perimeter crossover intersection connecting the at least one inner turn to the outermost turn.

18. The structure of claim 1 , wherein each turn of the plurality of turns includes and inner portion and an outer portion, and wherein the inner portions of each turn of the plurality of turns include a crossover intersection and are parallel to the inner portions of other turns of the plurality of turns.

19. The structure of claim 1 , wherein the resonant frequency is about 6.78 MHz.

20. The structure of claim 1 , wherein the first crossover intersection and the second crossover intersection are configured to shape magnetic fields for wireless power transfer.

Assignments (1)

Continuity (4)

References Cited (400)