Stator, electric machine, apparatus and method for preparing a stator

An electric machine comprising:

• a stator for rotating the electric machine, the stator comprising:
• a stator core which has a plurality of slots arranged in a circumferential direction of the stator core;
• and
• at least a first conductor and at least a second conductor arranged next to each other along a radial direction of one slot of the plurality of slots, wherein:
• axial end sections of the conductors are free from a separate insulating member,
• the axial end sections are axially delimited by a proximal end directed towards the stator core and by a distal end directed away from the stator core, and
• the axial end sections of radially adjacent first and second conductors are distanced from each other, characterized by:
• the axial end sections being axially distanced from each other, wherein an axial distance between a proximal end of the axial end section of a first conductor and an axial surface of the stator core is longer than the distance between a distal end of the axial end section of the second conductor and the axial surface of the stator core, and
• each respective slot of the plurality of slots providing respective compartments is formed by respective distancing members such that the first and second conductors are radially distanced from each other by the respective distancing members in respective slots.

An apparatus for preparing a stator, the apparatus comprising:

• a first insertion station for inserting at least two conductors into a slot of a plurality of slots of the stator, such that respective axial end sections of the two conductors are electrically connectable;
• and
• a control unit for controlling the insertion of the conductors into the slot such that the respective axial end sections of the two radially adjacent conductors are distanced from each other, characterized by:
• the respective axial end sections being axially distanced from each other, and axial distance between a proximal end of a respective axial end section of a first conductor of the two conductors and an axial surface of a stator core of the stator is longer than the distance between a distal end of a respective axial end section of a second conductor of the two conductors and the axial surface of the stator core, and
• the plurality of slots providing respective compartments that are formed by respective distancing members such that the two conductors being are radially distanced from each other by the respective distancing members in respective slots.

A method for preparing a stator, the method comprising:

• inserting at least two conductors into a slot of a plurality of slots of a stator core of the stator, such that axial end sections of the at least two conductors are electrically connectable, and such that respective axial end sections of the radially adjacent at least two conductors are distanced from each other, characterized by:
• the respective axial end sections being axially distanced from each other, and an axial distance between a proximal end of the respective axial end section of a first conductor of the at least two conductors and an axial surface of the stator core is longer than a distance between a distal end of the respective axial end section of a second conductor of the at least two conductors and the axial surface of the stator core;
• and
• the plurality of slots providing respective compartments that are formed by respective distancing members such that the at least two conductors are radially distanced from each other by the respective distancing members in respective slots.