US 12,244,176 B2
Stator of an electric machine
Daniel Kuehbacher, Stuttgart (DE); and Felix Bensing, Stuttgart (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/922,136
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Mar. 22, 2021, PCT No. PCT/EP2021/057218
§ 371(c)(1), (2) Date Oct. 28, 2022,
PCT Pub. No. WO2021/219293, PCT Pub. Date Nov. 4, 2021.
Claims priority of application No. 10 2020 205 448.7 (DE), filed on Apr. 29, 2020.
Prior Publication US 2023/0179036 A1, Jun. 8, 2023
Int. Cl. H02K 1/16 (2006.01); H02K 3/12 (2006.01); H02K 3/34 (2006.01); H02K 15/02 (2006.01); H02K 15/085 (2006.01); H02K 15/10 (2006.01)
CPC H02K 1/165 (2013.01) [H02K 3/12 (2013.01); H02K 3/345 (2013.01); H02K 15/024 (2013.01); H02K 15/085 (2013.01); H02K 15/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A stator of an electric machine having a laminated stator core (3), which comprises a stator axis (2), a plurality of stator teeth (5) and a plurality of stator slots (6) formed between the stator teeth (5) and is formed by a plurality of stacked stator laminations (4), and having electrical conductor elements (10), which extend through the stator slots (6) of the laminated stator core (3) and are provided to form an electrical winding, wherein a slot insulation (11) is respectively provided in the stator slots (6) for electrical insulation of the conductor elements (10) against the laminated stator core (3), wherein each of the stator laminations (4) comprises a plurality of lamination teeth (7) and a lamination yoke (8) which connects said lamination teeth (7), wherein the stator teeth (5) of the laminated stator core (3) are respectively formed by stacked lamination teeth (7) of the stator laminations (4),
wherein
at least one stator lamination (4) is provided in the laminated stator core (3) which is twisted in peripheral direction with respect to the stator axis (2) relative to others of the stator laminations (4) of the laminated stator core (3) such that, in each stator slot (6) of the laminated stator core (3), the at least one twisted stator lamination (4) projects into the respective stator slot (6) with a lamination tooth portion (12) of one of the lamination teeth (7),
wherein a plurality of stator laminations (4) in the laminated stator core (3) are twisted in peripheral direction with respect to the stator axis (2) relative to others of the stator laminations (4) of the laminated stator core (3),
wherein the plurality of twisted stator laminations (4) in the laminated stator core (3) are disposed in a plurality of spaced-apart groups (14) of abutting stator laminations (4), wherein one or more non-twisted stator laminations (4) are disposed in each case between two groups (14) of twisted stator laminations (4), and
wherein the two groups (14) of twisted stator laminations (4) are twisted by the same twist angle.