Rotor and method for producing a rotor

Patent metadata

Field	Value
Publication number	US-12424886-B2
Application number	US-202218282882-A
Country	US
Kind code	B2
Filing date	Apr 13, 2022
Priority date	May 5, 2021
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

The invention relates to a rotor, in particular for a current-excited synchronous machine, comprising a rotor main body which has a plurality of rotor teeth, the rotor teeth being wound with a conductor material in order to form a winding, the conductor material having conductor ends which, in order to produce an electrical connection, are pressed axially against a stop via a contact element, and the contact element or the stop being designed to electrically connect, in the circumferential direction, at least two conductor ends.

First claim

The invention claimed is:

1. A rotor comprising:
a main rotor body, which comprises a plurality of rotor teeth; and
a conductor material wound around the rotor teeth to form a winding,
wherein the conductor material has conductor ends, which are pressed axially against a stop by a contact element to establish an electrically conductive connection,
wherein the contact element or the stop is configured to electrically conductively connect at least two of the conductor ends in a circumferential direction,
wherein the contact element or the stop comprises a conductor element, which makes it possible to provide the electrically conductive connection between the at least two of the conductor ends in the circumferential direction,
wherein the contact element or the stop comprises a plurality of pockets which have a ray-like arrangement and are configured to arrange and position the conductor ends, and
wherein an intermediate element, which is configured to deform during a pressing operation for connection to the conductor element, is arranged in at least one of the pockets.

2. The rotor according to claim 1 ,
wherein the main rotor body is surrounded with potting material to form a sheath, and
wherein the sheath forms the stop.

3. The rotor according to claim 1 ,
wherein the contact element is axially positionally fixed by a securing element.

4. The rotor according to claim 1 ,
wherein the intermediate element provides the electrically conductive connection to the conductor element.

5. The rotor according to claim 2 ,
wherein at least one of the contact element or the sheath is configured to provide an electrically conductive connection to a current collecting element or slip ring module along a rotor axis.

6. The rotor according to claim 1 ,
wherein the contact element is in a form of a current collecting element.

7. A method for producing a rotor, the method comprising:
providing a rotor body and a winding conductor material around the rotor body to form a winding, wherein the winding has conductor ends;
pressing the conductor ends against a stop via a contact element; and
establishing an electrically conductive connection between at least two of the conductor ends via the contact element or the stop,
wherein the contact element or the stop comprises a conductor element, which makes it possible to provide the electrically conductive connection between the at least two of the conductor ends in the circumferential direction,
wherein the contact element or the stop comprises a plurality of pockets which have a ray-like arrangement and are configured to arrange and position the conductor ends, and
wherein an intermediate element, which is configured to deform during a pressing operation for connection to the conductor element, is arranged in at least one of the pockets.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Ragot Jerome
• Schmidt Robert

Classifications

• H02K15/022

  with salient poles · CPC title

• H02K13/02

  Connections between slip-rings and windings · CPC title

• H02K1/24 Primary

  Rotor cores with salient poles {; Variable reluctance rotors} · CPC title

• H02K3/527 Primary

  applicable to rotors only · CPC title