US 12,244,193 B2
Stator of an electric machine
Drazen Martinovic, Stuttgart (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/923,011
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Apr. 27, 2021, PCT No. PCT/EP2021/060933
§ 371(c)(1), (2) Date Nov. 3, 2022,
PCT Pub. No. WO2021/224059, PCT Pub. Date Nov. 11, 2021.
Claims priority of application No. 10 2020 205 684.6 (DE), filed on May 6, 2020.
Prior Publication US 2023/0179053 A1, Jun. 8, 2023
Int. Cl. H02K 3/00 (2006.01); H02K 3/28 (2006.01)
CPC H02K 3/28 (2013.01) 14 Claims
OG exemplary drawing
 
1. A stator of an electric machine, the stator comprising stator slots (3) and comprising conductor elements (4) which extend through the stator slots (3) to form an electrical plug-in winding, wherein the conductor elements (4) project with conductor ends (5) from the stator slots (3) and form a winding head (6) on each of two end faces of the stator (1), wherein the conductor ends (5) of the conductor elements (4) each comprise a skewed portion (5.1) which extends in a peripheral direction and a joining portion (5.2) for contacting another of the conductor elements (4), wherein respective abutting joining portions (5.2) of two conductor elements (4) are joined by means of by a joining connection (10) and respectively form a conductor pair (11), wherein the conductor pairs (11) lie in the winding head (6) in a specific radial winding head position with respect to a stator axis (12), wherein the winding head position includes a winding head outer position (AL), a winding head inner position (IL) and intermediate winding head intermediate positions (ZL), wherein a conductor pair (11), which is disposed in the winding head outer position (AL) or in the winding head inner position (IL) and in which none of the skewed portions (5.1) are crossed with one of the skewed portions (5.1) of other conductor pairs (11) to form an interlacing (13), forms a free-standing conductor pair (FLP),
wherein a conductor pair (11), which is disposed in the winding head outer position (AL) or in the winding head inner position (IL) and in which only one of the two skewed portions (5.1) is crossed with one of the skewed portions (5.1) of other conductor pairs (11) with mutual contact or support to form an interlacing (13), forms a one side-connected conductor pair (ELP),
wherein the interlacing (13) is provided with mutual contact or support at a specific interlacing height (VH) relative to an end face of the stator (1),
wherein a conductor pair (11), which is disposed in the winding head outer position (AL) or in the winding head inner position (IL) and the skewed portions (5.1) of which are crossed without contact to form an interlacing (13), form a contactlessly interlaced conductor pair (FLP), and
wherein conductor pairs (11) are provided in the winding head (6), the joining connections (10) of the conductor pairs in the winding head having greater strength than the joining connection (10) of the other conductor pairs (11).