Electric machine comprising a one-piece interconnection device, and method for mounting the electric machine

An electric machine, comprising:

• a stator which has a stator body and a polyphase stator winding with at least one winding end per phase, wherein the stator defines a stator axis;
• a housing divided into a receiving region that receives the stator body such that the stator body is fixed with respect to relative rotation, and a connection region configured to electrically connect the stator winding;
• and
• an interconnection device which has, per phase, at least one busbar configured to electrically contacting the winding ends with a high-voltage connection and an electrically insulating insulation component part via which the busbars are mounted at the housing,
• wherein the insulation component part has, for each busbar:
• at least one fixing portion in each instance configured to fix the busbars in a correctly positioned manner at the insulation component part;
• and
• a positioning portion in each instance for correctly positioning the winding ends at the busbars,
• wherein the fixing portions and the positioning portions are formed from a common material portion.

A method for mounting an electric machine having a stator which has a stator body and a polyphase stator winding with at least one winding end per phase, wherein the stator defines a stator axis;

• a housing divided into a receiving region that receives the stator body such that the stator body is fixed with respect to relative rotation, and a connection region configured to electrically connect the stator winding;
• and an interconnection device which has, per phase, at least one busbar configured to electrically contacting the winding ends with a high-voltage connection and an electrically insulating insulation component part via which the busbars are mounted at the housing, wherein the insulation component part has, for each busbar:
• at least one fixing portion in each instance configured to fix the busbars in a correctly positioned manner at the insulation component part;
• and a positioning portion in each instance for correctly positioning the winding ends at the busbars, wherein the fixing portions and the positioning portions are formed from a common material portion, comprising:
• mounting the stator in the housing;
• mounting the interconnection device at the winding ends;
• mounting the insulation component part in a final position at the housing;
• shortening an axial excess length of the winding ends relative to the busbars;
• and
• electrically conductively connecting the winding ends to an associated busbars.