US 12,328,048 B2
Stator, electric machine, connection bridge and method for manufacturing a stator
Massimo Ponzio, Siena (IT); Rubino Corbinelli, Staggia Senese (IT); and Daniele Nocciolini, Florence (IT)
Assigned to ATOP S.p.A., Barberino Tavarnelle (IT)
Appl. No. 18/246,101
Filed by ATOP S.p.A., Barberino Tavarnelle (IT)
PCT Filed Sep. 28, 2021, PCT No. PCT/EP2021/076603
§ 371(c)(1), (2) Date Mar. 21, 2023,
PCT Pub. No. WO2022/083983, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. 20202710 (EP), filed on Oct. 20, 2020.
Prior Publication US 2023/0369932 A1, Nov. 16, 2023
Int. Cl. H02K 3/28 (2006.01); H02K 1/16 (2006.01); H02K 3/14 (2006.01); H02K 3/50 (2006.01); H02K 15/33 (2025.01)
CPC H02K 3/28 (2013.01) [H02K 1/16 (2013.01); H02K 3/14 (2013.01); H02K 3/50 (2013.01); H02K 15/33 (2025.01); H02K 2203/06 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A stator for a rotating electric machine, comprising:
a stator core having a plurality of slots arranged in a circumferential direction of the stator core; and
a plurality of conductors forming a stator winding, wherein:
at least a radially outer conductor of the plurality of conductors and a radially inner conductor of the plurality of conductors are arranged along a radial direction of each slot of the plurality of slots, wherein respective axial end sections of the radially outer conductor and the radially inner conductor are protruding from respective slots of the plurality of slots on at least one side of the stator core;
at least one pair of a radially outer conductor of the plurality of conductors arranged along a first slot of the plurality of slots and a radially inner conductor of a second slot of the plurality of slots circumferentially spaced from the first slot is electrically connected by a connection bridge; and
the connection bridge comprises:
a first base element and a second base element connected to the axial end sections of a respective conductor of the plurality of conductors by axial welding, and
a top element that is connected to the first base element by welding from a radial outer side and to the second base element, after the first base element and the second base element are connected to the axial end sections of the respective conductor, by welding from a radial inner side and arranged at a larger distance from the stator core than a distance from the stator core to the first base element and the second base element.