Stator for an electric machine, drive installation for an electric vehicle, and vehicle

A stator for an electric machine, comprising:

• a stator core which extends along a longitudinal axis, has an end side and a further end side that lies opposite the end side;
• and
• a stator winding, wherein:
• a multiplicity of grooves that are disposed in the circumferential direction are configured in the stator core,
• the stator winding occupies a plurality of winding zones in the grooves,
• the stator winding has a number of N strands and a number of 2·P poles, and the number of grooves is 2·P·N·q, where P, N and q are natural numbers, and q≥2,
• each winding zone extends across at least q+1 of the grooves and is radially subdivided into first to Lth layers which are designated according to their sequence in the radial direction,
• the layers configure first to (L/2)th double layers, wherein the ith double layer comprises the (2i−1)th and the (2i)th layer for all 1≤i≤(L/2), where L≥6 and is even, where L and i are natural numbers,
• a number of the double layers being less than the number of the other double layers, is displaced by at least one groove counter to the pre-defined circumferential direction in relation to the other double layers,
• each winding zone in the circumferential direction is subdivided into first to qth sub-winding zones which comprise in each case all layers and are designated according to their sequence in the circumferential direction,
• the stator winding for a respective strand has a phase winding comprising at least one sub-winding which configures a current path and comprises internal portions that are disposed within the grooves, and connection portions that are disposed on the end sides of the stator core and connect in each case in an electrically conductive manner two internal portions which are directly successive in terms of the current path.