US 12,009,706 B2
Drive device having a brushless electric motor
Uwe Christian, Marktzeuln (DE); Roland Kalb, Rossach (DE); Gabriele Lange, Marktrodach (DE); Helmut Pfalzgraf, Eibelstadt (DE); and Wolfgang Strauss, Unterpleichfeld (DE)
Assigned to Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Bamberg, (DE)
Appl. No. 17/439,432
Filed by Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Bamberg, Bamberg (DE)
PCT Filed Mar. 12, 2020, PCT No. PCT/EP2020/056702
§ 371(c)(1), (2) Date Sep. 15, 2021,
PCT Pub. No. WO2020/187703, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 10 2019 203 525.6 (DE), filed on Mar. 15, 2019.
Prior Publication US 2022/0190692 A1, Jun. 16, 2022
Int. Cl. H02K 11/33 (2016.01); H02K 5/22 (2006.01); H02K 11/38 (2016.01); H02K 7/116 (2006.01)
CPC H02K 11/33 (2016.01) [H02K 5/225 (2013.01); H02K 11/38 (2016.01); H02K 7/1166 (2013.01); H02K 2203/03 (2013.01); H02K 2211/03 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A drive device for use in a motor vehicle, the drive device comprising:
a drive housing defining a housing opening;
motor electronics provided with a printed circuit board; and
a brushless electric motor configured to be inserted into the housing opening and including,
a stator winding provided with a number of phase connections,
a stator provided with a stator body including a number of stator teeth arranged in a star formation, wherein the stator winding is wound around the number of stator teeth, and
a rotor including a rotor shaft, wherein the rotor is configured to be coupled to the motor electronics,
wherein the rotor is an external rotor,
wherein the stator body is externally toothed and forms a central shaft passage configured to receive the rotor shaft,
wherein the rotor includes a rotor housing surrounding the stator body and permanent magnets disposed in the rotor housing, wherein the rotor housing is coupled to the rotor shaft,
wherein the number of phase connections of the stator winding are guided into a radially-oriented joining position,
wherein the printed circuit board includes a number of connection sockets configured to receive the number of phase connections in the course of inserting the electric motor into the drive housing, and
wherein the electric motor defines a motor axis, and the number of connection sockets are formed by guide slots, wherein the guide slots extend axially with respect to the motor axis of the electric motor from an edge of the printed circuit board, wherein the edge faces towards the stator body.