Method for producing a coil assembly, coil assembly, stator, and multi-dimensional drive

Patent metadata

Field	Value
Publication number	US-11049644-B2
Application number	US-201615773666-A
Country	US
Kind code	B2
Filing date	Oct 28, 2016
Priority date	Nov 5, 2015
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

A coil assembly of a stator of a planar multi-dimensional drive includes at least one coil. The at least one coil includes a winding. The winding is electrically conductive and has a winding material. The winding is a structure of the winding material, which is folded at folding points and which has one or more windings.

First claim

The invention claimed is:

1. A coil arrangement of a stator of a planar multi-dimensional drive, comprising:
at least one coil including a winding,

wherein:
the winding is electrically conductive and has a winding material in a strip-like form in a strip extent direction;
a first turn of the winding includes mutually parallel first and second linear sections, and a connecting section, the connecting section including a linear connecting piece, a first fold connecting the linear connecting piece to a first end of the first linear section, and a second fold connecting the linear connecting piece to a first end of the second linear section;
the first and second folds each include a turnover of the strip-like winding material through 180° at an angle of 45° with respect to the strip extent direction; and
an upper surface of the linear connecting piece faces a lower surface of the first linear section and a lower surface of the second linear section.

2. The coil arrangement as claimed in claim 1 , wherein:
the winding material is a conductor track of a foil including a plurality of the conductor tracks; and
the plurality of conductor tracks is in the foil.

3. The coil arrangement as claimed in claim 2 , further comprising:
an electrical insulation arranged between directly adjacent conductor tracks of the plurality of conductor tracks in the foil,
wherein the electrical insulation is formed (i) via local oxidation or anodizing, and/or (ii) via a local removal of material and refilling with material, such that the directly adjacent conductor tracks are thermally separated and at the same time mechanically constitute a unit.

4. The coil arrangement as claimed in claim 1 , wherein:
the winding material forms a material core of the winding, and
the material core of the winding is, in the strip extent direction, at least partially covered by an insulation material.

5. The coil arrangement as claimed in claim 4 , wherein the insulation material comprises a coating additionally applied to the winding material, the additionally applied coating comprising one or more of (i) a lacquer or oxide material, and (ii) a native and/or strengthened conversion coating in the form of an oxide layer of the electrically conductive component.

6. The coil arrangement as claimed in claim 1 , further comprising:
a plurality of the coils,
wherein the windings of the plurality of coils are nested one inside the other.

7. The coil arrangement as claimed in claim 1 , wherein:
the winding includes a second turn;
a transition section is arranged at a transition between the first and second turns, and the transition section is configured to connect a second end of the second linear section to a first end of a third linear section of the second turn;
the transition section includes a first transition fold in conjunction with the second end of the second linear section and a second transition fold in conjunction with the first end of the third linear section; and
the first and second transition folds are connected to one another by a linear transition connecting piece, and/or each of the folds has a transition turnover of the strip-like winding material through 180° at an angle of 45° with respect to the strip extent direction.

8. The coil arrangement as claimed in claim 7 , further comprising:
ten additional turns.

9. The coil arrangement as claimed in claim 1 , wherein the winding runs in a spiral fashion.

10. The coil arrangement as claimed in claim 1 , wherein non-folded winding material extends monotonously along an extent direction.

11. The coil arrangement as claimed in claim 1 , wherein the coil arrangement is configured to move a magnetic workpiece carrier, in freely floating fashion above the coil arrangement, in six independent degrees of freedom.

12. The coil arrangement as claimed in claim 1 , wherein the winding material has a rectangular cross section perpendicular to the strip extent direction.

13. A method for producing a coil arrangement in a form of a flat coil and for a stator of a multi-dimensional planar drive, comprising:
forming at least one coil including an electrically conductive winding with or composed of a winding material; and
forming the winding as a structure, folded by folding at fold points, of the winding material such that an upper surface of a linear connecting piece connecting a first linear section to a second linear section of a first turn of the winding structure faces a lower surface of the first linear section and a lower surface of the second linear section.

Assignees

• Bosch Gmbh Robert

Inventors

• Albrecht Andreas
• Junker Stefan
• Kamenshchikov Ilya
• Daehling Stefan
• Henrichs Volker
• Hanisch Markus

Classifications

• H02K3/04

  Windings characterised by the conductor shape, form or construction, e.g. with bar conductors · CPC title

• H02K3/28

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title

• H02K41/031

  of the permanent magnet type · CPC title

• H01F2027/2861

  Coil formed by folding a blank · CPC title

• H01F27/2847 Primary

  Sheets; Strips (H01F27/2866 takes precedence) · CPC title