Primary-sided and a secondary-sided arrangement of winding structures, a system for inductive power transfer and a method for inductively supplying power to a vehicle

Patent metadata

Field	Value
Publication number	US-12148563-B2
Application number	US-202117173219-A
Country	US
Kind code	B2
Filing date	Feb 11, 2021
Priority date	Jun 26, 2015
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

A primary-sided arrangement including at least three phase lines and at least one winding structure per phase line, wherein each winding structure includes a subwinding structure, the winding structures extend along a longitudinal axis of the primary-sided arrangement, a first pitch between corresponding subwinding structures of a first and a second winding structure is chosen from an interval of a length of the subwinding structure and the first pitch is a distance between geometric centres of the corresponding subwinding structures of the first and the second winding structure along the longitudinal axis, and a second pitch between corresponding subwinding structures of the first winding structure and a third winding structure is smaller than the first pitch and the second pitch is a distance between geometric centres of the corresponding subwinding structures of the first and the third winding structure along the longitudinal axis.

First claim

The invention claimed is:

1. A primary-sided arrangement of primary winding structures of a system for inductive power transfer, comprising:
at least three phase lines; and
at least one primary winding structure per phase line;
wherein each primary winding structure comprises at least one subwinding structure, wherein the at least one subwinding structure comprises a loop or a coil, and wherein the at least one subwinding structure of each primary winding comprises a flat winding structure arranged in a two-dimensional plane;
wherein the primary winding structures extend along a longitudinal axis of the primary-sided arrangement, wherein a first pitch between corresponding subwinding structures of a first primary winding structure and a second primary winding structure is chosen from an interval of a length of the subwinding structure and wherein the first pitch is a distance between geometric centres of the corresponding subwinding structures of the first and the second primary winding structures along the longitudinal axis;
wherein a second pitch between corresponding subwinding structures of the first primary winding structure and a third primary winding structure is smaller than the first pitch between the corresponding subwinding structures of the first primary winding structure and the second primary winding structure and wherein the second pitch is a distance between geometric centres of the corresponding subwinding structures of the first and the third primary winding structures along the longitudinal axis; and
wherein the at least one subwinding structure of the first primary winding structure is arranged in a first plane, the at least one subwinding structure of the second primary winding structure is arranged in a second plane, and the at least one subwinding structure of the third primary winding structure is arranged in a third plane, wherein the first plane, the second plane, and the third plane are arranged at different vertical positions along a vertical axis, and wherein the vertical axis is oriented parallel to an axis of symmetry of the at least one subwinding structure of the first primary winding structure.

2. The primary-sided arrangement of claim 1 , wherein the second pitch between the corresponding subwinding structures of the first primary winding structure and the third primary winding structure is equal to a third pitch between the corresponding subwinding structures of the second primary winding structure and the third primary winding structure.

3. The primary-sided arrangement of claim 1 , wherein the first pitch between corresponding subwinding structures of the first primary winding structure and the second primary winding structure is ⅔ of the length of one subwinding structure, wherein the second pitch between the corresponding subwinding structures of the first primary winding structure and the third primary winding structure is ⅓ of the length of one subwinding structure.

4. The primary-sided arrangement of claim 1 , wherein the first pitch between corresponding subwinding structures of the first primary winding structure and the second primary winding structure is ⅓ of the length of one subwinding structure, wherein the second pitch between corresponding subwinding structures of the first primary winding structure and the third primary winding structure is ⅙ of the length of one subwinding structure.

5. The primary-sided arrangement of claim 1 , wherein a plurality of corresponding subwinding structures are designed and/or arranged such that directions of the magnetic fluxes generated by corresponding subwinding structures of the first primary winding structure and the second primary winding structure are oriented in the same direction, wherein said direction is oriented opposite to the direction of the magnetic flux generated by a corresponding subwinding structure of the third primary winding structure if either a positive or negative operating current flows through the plurality of corresponding subwinding structures.

6. The primary-sided arrangement of claim 1 , wherein at least one feeding point of the first subwinding structure of the first primary winding structure and at least one feeding point of the first subwinding structure of the second primary winding structure are arranged on a first lateral side of the primary-sided arrangement, wherein at least one feeding point of the first subwinding structure of the third primary winding structure is arranged on a second lateral side of the primary-sided arrangement.

7. The primary-sided arrangement of claim 1 , wherein a length or pole pitch of the at least one subwinding structure of a primary winding structure varies.

8. The primary-sided arrangement of claim 7 , wherein each subwinding structure of the primary winding structure has a first or a second length, wherein the second length is longer than the first length and/or each subwinding structure of the primary winding structure provides a first or a second pole pitch, wherein the second pole pitch is longer than the first pole pitch.

9. The primary-sided arrangement of claim 7 , wherein a length distribution of subwinding structures of the first primary winding structure along the longitudinal axis is inverse to a length distribution of subwinding structures of the second primary winding structure along the longitudinal axis.

10. The primary-sided arrangement of claim 1 , further comprising at least one magnetically conducting element or an arrangement of magnetically conducting elements.

11. The primary-sided arrangement of claim 10 , wherein the arrangement of magnetically conducting elements comprises multiple bar elements.

12. The primary-sided arrangement of claim 11 , wherein the arrangement of magnetically conducting elements comprises multiple rows of at least one magnetically conductive element, wherein a non-zero gap between two adjacent rows is provided along a lateral direction.

13. The primary-sided arrangement of claim 11 , wherein at least two magnetically conductive elements overlap each other.

14. The primary-sided arrangement of claim 10 , wherein the least one magnetically conducting element or an arrangement of magnetically conducting elements provides a recess to receive at least a section of the primary winding structure.

15. The primary-sided arrangement of claim 10 , wherein at least one section of at least one magnetically conductive element extends into one subwinding structure.

16. The primary-sided arrangement of claim 7 , wherein the length is along the longitudinal axis, and wherein successive subwinding structures of the at least one primary winding structure are arranged adjacent to one another along the longitudinal axis.

17. The primary-sided arrangement of claim 1 , further comprising at least one cable bearing element.

18. The primary-sided arrangement of claim 1 , wherein a position of the primary-sided arrangement is adjustable at least along a vertical axis.

19. A system for inductive power transfer, the system comprising:
the primary-sided arrangement of primary winding structures according to claim 1 ; and
a secondary-sided arrangement of at least one secondary winding structure, wherein the secondary-sided arrangement comprises at least one phase line and one secondary winding structure per phase line.

20. The system according to claim 19 , wherein the secondary-sided arrangement comprises at least one magnetically conducting element or an arrangement of magnetically conducting elements.

21. The system according to cl

Assignees

• Bombardier Primove Gmbh

Inventors

• Wirth Christian
• Czainski Robert
• Lindt Rudolf

Classifications

• H01F41/04

  for manufacturing coils {(coils for transformer or inductances H01F27/28)} · CPC title

• H01F27/28

  Coils; Windings; Conductive connections · CPC title

• H02J50/10

  using inductive coupling · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title