Abstract: Connection unit for a stator with a stator winding having a number N of phases, having first to Nth contact portions, which are each designed for electrically conductively contacting one of N connection portions of the stator, form a receiving chamber for receiving one of the connection portions and have a guide. A respective contact portion has a wall, which limits the receiving chamber on one side, and the guide of the contact portion has a wall, which adjoins the wall of the contact portion and is bevelled with respect to the wall of the contact portion in a manner facing away from the receiving chamber. A conductor arrangement, which either electrically conductively connects the first to Nth contact portions or comprises N conductor portions, which are electrically isolated from one another and are each electrically conductively connected to one of the contact portions.

Abstract: Connection device for a stator having a stator winding, including N phases, first and second connection units which each comprise N contact portions and a conductor arrangement. The contact portions of the first connection unit are each designed for electrically conductive contacting of one of N connection portions of the stator winding, and the conductor arrangement of the first connection unit electrically conductively connects the contact portions of the first connection unit. The contact portions of the second connection unit are each designed for electrically conductive contacting of one of N further connection portions of the stator winding and the conductor arrangement of the second connection unit comprises N conductor portions, which are electrically insulated from each other and are each electrically conductively connected to one of the N contact portions of the second connection unit. A fastening mechanism permits the connection units to be detached and fastened.

Abstract: Described is an electrical machine (1) which comprises two end shields (6, 7), a stator (5) which is arranged between the two end shields (6, 7) and has a stator laminated core (11, 11a) and stator windings (12) arranged therein, and a rotor (3) which is arranged in the stator (5) and has a rotor shaft (2) mounted rotatably in the two end shields (6, 7). The electrical machine (1) furthermore has cooling channels (13) arranged fully in the stator laminated core (11, 11a) and edged by the latter. Furthermore described are a gear motor (30) comprising such an electrical machine (1), as well as a vehicle (20) comprising such an electrical machine (1).

Abstract: Connection unit for a stator having a stator winding with N number of phases. The connection unit includes a number N of contact portions each having a first wall and a second wall, and each contact portion forming a receiving chamber delimited by the first wall and the second wall and designed to encase one of N connection portions of the stator. Each contact portion is configured to electrically contact the connection portion, wherein the first and second walls of the N contact portions are oriented parallel to one other. A conductor arrangement which either electrically conductively connects the contact portions or includes N conductor portions which are electrically isolated from one another and are each electrically conductively connected to one of the N contact portions.

Abstract: Described is an electrical machine (1) which comprises two end shields (6, 7), a stator (5) which is arranged between the two end shields (6, 7) and has a stator laminated core (11, 11a) and stator windings (12) arranged therein, and a rotor (3) which is arranged in the stator (5) and has a rotor shaft (2) mounted rotatably in the two end shields (6, 7). The electrical machine (1) furthermore has cooling channels (13) arranged fully in the stator laminated core (11, 11a) and edged by the latter. Furthermore described are a gear motor (30) comprising such an electrical machine (1), as well as a vehicle (20) comprising such an electrical machine (1).