Rotor for an electric machine, method for producing a rotor, and electric machine for a motor vehicle

Inventors: Markus Lang (Munich, DE); Jerome Ragot (Munich, DE); Robert Schmidt (Munich, DE)

Assignee: Bayerische Motoren Werke Aktiengesellschaft

H02K3/527 H02K1/24 H02K15/066

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Quick Facts

Patent No.: US 12676527
App. No.: 18/689,229
Granted: Jul 7, 2026
Kind: B2

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Abstract

A rotor for an electric machine includes a rotor main part which has at least one pole core, at least one winding device which is received on the at least one pole core, and at least one contact device which is rotationally fixed to the rotor main part and which is coupled to the at least one winding device to conduct a current. The at least one winding device includes at least one winding that is plugged onto the at least one pole core and has two winding wire ends, at least one winding wire end of which is coupled to the at least one contact device to conduct a current via at least one plug connection.

Claims (24)

1 . A rotor for an electric machine, the rotor comprising:

a rotor body which has at least one pole core,

at least one winding device which is mounted on the at least one pole core, and

at least one contact device which is non-rotatably connected to a rotor base body and is conductively coupled to the at least one winding device, wherein:

the at least one winding device contains at least one winding which is attached to the at least one pole core and has two winding wire ends, of which at least one winding wire end is coupled in a conductive manner via at least one plug-in connection to the at least one contact device, and

the at least one contact device contains at least one spring element, by way of which the at least one winding wire end is coupled to the at least one contact device with formation of the plug-in connection.

2 . The rotor according to claim 1 , wherein:

the at least one winding is in a form of a prefabricated winding.

3 . The rotor according to claim 1 , wherein:

the at least one winding device has at least one alignment element which keeps at least one of the winding wire ends oriented in a predetermined orientation.

4 . The rotor according to claim 3 , wherein:

the at least one alignment element has at least one through opening through which the at least one winding wire end is passed and kept oriented in the orientation.

5 . The rotor according to claim 3 , wherein:

the at least one winding wire end is joined to the at least one alignment element.

6 . The rotor according to claim 1 , further comprising:

at least one pole shoe which is connected to the at least one pole core and which prevents a centrifugal detachment of the at least one winding device from the at least one pole core while the rotor is being used.

7 . A method for producing the rotor according to claim 1 , the method comprising:

a) attaching at least one winding device to the at least one pole core; and

b) coupling the at least one winding of the at least one winding device to the at least one contact device by coupling the at least one winding wire end to the at least one contact device by way of the at least one plug-in connection.

8 . The method according to claim 7 , wherein:

the coupling according to b) is carried during of the attaching according to step a).

9 . The method according to claim 7 , wherein:

the coupling according to b) is carried out as a result of the attaching according to step a).

10 . An electric machine for a motor vehicle, the electric machine comprising at least one rotor according to claim 1 .