Stator for an electric machine having end windings pressed into a housing

1. A stator ( 1 ) for an electric machine, comprising:

a cylindrical stator body ( 3 );

a housing ( 21 ) surrounding the stator body ( 3 ); and

a plurality of windings ( 5 );

wherein the windings ( 5 ) are arranged so as to run along the stator body ( 3 ) and protrude in a longitudinal direction beyond the stator body ( 3 ) in the form of end windings ( 17 , 19 ) at end faces ( 13 , 15 ) of the stator body ( 3 );

and wherein

an end region ( 29 ) of the housing ( 21 ) protrudes in the longitudinal direction beyond the stator body ( 3 ) and a first accommodating region ( 31 ) is formed at the protruding end region ( 29 ) of the housing ( 21 ), said accommodating region surrounding a first of the end windings ( 17 ) so as to bear tightly against a first end face ( 13 ) of the stator body ( 3 ).

2. The stator according to claim 1 , wherein the windings ( 5 ) are pressed, in a region of the end winding ( 17 ), in the accommodating region ( 31 ) of the housing ( 21 ).

3. The stator according to claim 1 , wherein a layer consisting of an electrically insulating cladding material is arranged on the accommodating region ( 31 ) on a surface directed towards the end winding ( 17 ).

4. The stator according to claim 3 , wherein the cladding material comprises a ceramic matrix material in which metal particles are embodied.

5. The stator according to claim 3 , wherein the cladding material comprises a material selected from the group consisting of paper, polymer film, Pertinax, pressboard and polyamide film.

6. The stator according to claim 1 , further having an end plate or a terminating ring ( 37 ), wherein the end plate or terminating ring ( 37 ) has a second accommodating region ( 35 ), which surrounds a second of the end windings ( 19 ) so as to bear tightly against a second end face ( 15 ) of the stator body ( 3 ).

7. The stator according to claim 1 , further having an end guard ( 39 ), wherein the end guard ( 39 ) has a second accommodating region ( 41 ), which surrounds a second of the end windings ( 19 ) so as to bear tightly against a second end face ( 15 ) of the stator body ( 3 ).

8. The stator according to claim 1 , wherein the housing ( 21 ) is provided with a cooling device ( 25 ) for cooling the stator body ( 3 ) accommodated therein and the end windings ( 17 , 19 ).

9. A method for manufacturing a stator ( 3 ) for an electric machine, wherein the method comprises:

providing a cylindrical stator body ( 3 );

arranging windings ( 5 ) along the stator body ( 3 ) in such a way that the windings ( 5 ) protrude in the longitudinal direction beyond the stator body ( 3 ) in the form of end windings ( 17 , 19 ) on end faces ( 13 , 15 ) of the stator body ( 3 );

providing a housing ( 21 ), which is designed to surround the stator body ( 3 ), wherein a first accommodating region ( 31 ) is formed at an end region ( 29 ) of the housing ( 21 ), said first accommodating region being designed to surround a first of the end windings ( 17 ) so as to bear tightly against a first end face ( 13 ) of the stator body ( 3 ); and

assembling the housing ( 21 ) with the stator body ( 3 ) in such a way that the first winding ( 17 ) is accommodated in the accommodating region ( 31 ) and is pressed therewith.

10. The method according to claim 9 , further comprising:

deforming the first end winding ( 17 ) into an outwardly tapering form prior to the assembly of the housing ( 21 ) with the stator body ( 3 ).

11. The method according to claim 9 , further comprising:

introducing an additional joining part ( 45 ) adjacent to the first accommodating region ( 31 ) of the housing ( 21 ) and in alignment with the first accommodating region ( 31 ) of the housing ( 21 ) prior to the assembly of the housing ( 21 ) with the stator body ( 3 ).