US 12,244,194 B2
Stator of an electrical machine
Andreas Heider, Stuttgart (DE); Meiko Boley, Leonberg (DE); Nikola Goranovic, Hannover (DE); and Tobias Hein, Gronau (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 18/005,423
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Jul. 6, 2021, PCT No. PCT/EP2021/068583
§ 371(c)(1), (2) Date Jan. 13, 2023,
PCT Pub. No. WO2022/012999, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 10 2020 208 921.3 (DE), filed on Jul. 16, 2020.
Prior Publication US 2023/0283132 A1, Sep. 7, 2023
Int. Cl. H02K 3/28 (2006.01); H02K 15/00 (2006.01)
CPC H02K 3/28 (2013.01) [H02K 15/0081 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A stator (1) of an electrical machine (10) comprising a stator body (2) having a stator axis (100) and comprising stator grooves (3) in which an electrical plug-in winding runs, which is formed from a plurality of conductor elements (4), wherein conductor elements (4) are provided which each run with conductor branches (4a) through one or two of the stator grooves (3) and protrude with conductor ends (4b) from the stator grooves (3) on at least one end face (5) of the stator (1) and form a winding head (6), wherein the conductor ends (4b) of the conductor elements (4) are arranged in the respective winding head (6) in a plurality of groups (7) distributed in the circumferential direction in relation to the stator axis (100), wherein each group (7) comprises a plurality of conductor ends (4b) arranged along a radial direction in relation to the stator axis (100),
wherein
at least one of the conductor ends (4b) of each group (7), as viewed in the radial direction, has raised structures (8) arranged on both sides, in such a way that when the entire group (7) of conductor ends (4b) is clamped between two clamping jaws, the raised structures (8) on a first side (14) of the conductor end (4b) permit an approach, effected elastically or plastically by the clamping jaws, between the conductor end (4b) adjacent to the first side (14) and the conductor end (4b) having structures (8), in order for the relevant conductor ends (4b) to be welded, and on an opposite second side (15) maintain a distance between the conductor end (4b) adjacent to the second side (15) and the conductor end (4b) having structures (8), in order to prevent welding of the relevant conductor ends (4b).