System and method for reducing interference in a wireless power transfer system

Patent metadata

Field	Value
Publication number	US-10389145-B2
Application number	US-201715625882-A
Country	US
Kind code	B2
Filing date	Jun 16, 2017
Priority date	Jun 16, 2017
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

One aspect of the disclosure provides an apparatus for conveying wireless power. The apparatus comprises a circuit board disposed along one or more planar coils and a plurality of feeds. The circuit board is divided into a first area separate from a second area. The first area has a plurality of first voltage components and the second area has a plurality of second voltage components. The first voltage components operates at a lower voltage than the second voltage components. The plurality of feeds are coupled to the one or more planar coils and the circuit board. The plurality of feeds pass through the circuit board within the second area along a side of the circuit board and couple to one or more of the second voltage components.

First claim

What is claimed is:

1. An apparatus for conveying wireless power, comprising:
a circuit board disposed along one or more planar coils, the circuit board divided into a first area separate from a second area, the first area having a plurality of first voltage components and the second area having only a plurality of second voltage components, the first voltage components operating at a lower voltage than the second voltage components; and
a plurality of feeds coupled to the one or more planar coils and the circuit board, the plurality of feeds passing through the circuit board within only the second area along a side of the circuit board and coupled to one or more of the second voltage components.

2. The apparatus of claim 1 , wherein the plurality of feeds are configured to convey a voltage signal from the one or more planar coils to the plurality of second voltage components and wherein a space between a position of the second area and a position of the first area reduces an interference of the first voltage components by the voltage signal.

3. The apparatus of claim 1 , further comprising one or more conductors arranged in the one or more planar coils, wherein the plurality of feeds run substantially perpendicular to both the one or more planar coils and the circuit board.

4. The apparatus of claim 1 , further comprising a housing disposed along the one or more planar coils and between the one or more planar coils and the circuit board.

5. The apparatus of claim 4 , wherein the housing is configured to protect the circuit board and the first and second voltage components from environmental exposure and impacts.

6. The apparatus of claim 4 , wherein the housing defines a first plurality of holes extending from a first surface to a second surface of, and through the housing, the first surface opposite the second surface, wherein the circuit board defines a second plurality of holes extending from a first surface to a second surface of, and through the circuit board, the first surface opposite the second surface, and wherein the plurality of feeds penetrates the housing via the first plurality of holes and penetrates the circuit board via the second plurality of holes when coupling the one or more coils to the one or more high voltage components.

7. The apparatus of claim 1 , wherein the one or more planar coils are configured to generate a wireless field and transfer power wirelessly to one or more wireless power receivers via the magnetic field.

8. The apparatus of claim 1 , wherein the one or more planar coils are configured to generate an induced voltage based on exposure to a wireless field generated by a wireless power transmitter.

9. The apparatus of claim 1 , further comprising a ferromagnetic structure disposed along a first side of the one or more planar coils, wherein the plurality of feeds is coupled to the circuit board and the one or more planar coils without penetrating the ferromagnetic structure.

10. A method of manufacturing an apparatus for wirelessly conveying power, the method comprising:
providing a ferromagnetic structure disposed along a first side of one or more planar coils;
providing a circuit board disposed along the ferromagnetic structure on a second side opposite the one or more planar coils;
dividing the circuit board into a first area separate from a second area, the first area having an arrangement of first voltage components and the second area having an arrangement of only second voltage components, the first voltage components operating at a lower voltage than the second voltage components; and
providing a plurality of feeds coupled to the one or more planar coils and the circuit board without penetrating the ferromagnetic structure, wherein the plurality of feeds penetrate the circuit board within only the second area and couple to one or more of the second voltage components.

11. The method of claim 10 , wherein the plurality of feeds are configured to convey a voltage signal from the one or more planar coils to the plurality of second voltage components and wherein a space between a position of the second area and a position of the first area reduces an interference of the first voltage components by the voltage signal.

12. The method of claim 10 , wherein the one or more planar coils comprise one or more conductors and wherein the plurality of feeds runs substantially perpendicular to both the one or more planar coils and the circuit board.

13. The method of claim 10 , further comprising providing a housing along the one or more planar coils and between the one or more planar coils and the circuit board.

14. The method of claim 13 , wherein the housing is configured to protect the circuit board and the first and second voltage components from environmental exposure and impacts.

15. The method of claim 13 , wherein the housing defines a first plurality of holes extending from a first surface to a second surface of, and through the housing, the first surface opposite the second surface, wherein the circuit board defines a second plurality of holes extending from a first surface to a second surface of, and through the circuit board, the first surface opposite the second surface, and wherein the plurality of feeds penetrates the housing via the first plurality of holes and penetrates the circuit board via the second plurality of holes when coupling the one or more coils to the one or more high voltage components.

16. The method of claim 10 , wherein the one or more planar coils are configured to generate a wireless field and transfer power wirelessly to one or more wireless power receivers via the magnetic field.

17. The method of claim 10 , wherein the one or more planar coils are configured to generate an induced voltage based on exposure to a wireless field generated by a wireless power transmitter.

18. The method of claim 10 , further comprising providing a ferromagnetic structure along a first side of the one or more planar coils, wherein the plurality of feeds is coupled to the circuit hoard and the one or more planar coils without penetrating the ferromagnetic structure.

19. An apparatus for conveying wireless power, comprising:
one or more means for conveying wireless power;
means for supporting a circuit disposed along the one or more means for conveying energy, the means for supporting a circuit divided into a first area separate from a second area, the first area having a plurality of first voltage components and the second area having only a plurality of second voltage components, the first voltage components operating at a lower voltage than the second voltage components; and
a plurality of means for conveying power coupled to the one or more means for conveying power and the means for supporting a circuit, the plurality of means for conveying power passing through the means for supporting a circuit within only the second area along a side of the means for supporting a circuit and coupled to one or more of the second voltage components.

20. The apparatus of claim 19 , wherein the plurality of means for conveying power are configured to convey a voltage signal from the one or more means for conveying wireless power to the plurality of second voltage components and wherein a space between a position of the second area and a position of the first area reduces an interference of the first voltage components by the voltage signal.

21. The apparatus of claim 19 , further comprising one or more conductors arranged in the one or more means for conveying wireless p

Assignees

• Witricity Corp

Inventors

• Islinger Simon
• Scibor Rafal
• Fischer Marcel
• Percebon Leandro
• Raabe Stefan
• Pavlovsky Martin
• Friedel Jonas

Classifications

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• H02J7/50

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H02J7/70 Primary

  characterised by the mechanical construction · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• B60L53/31

  Charging columns specially adapted for electric vehicles · CPC title