Stator having winding cooling for an electrical machine

A stator for an electrical machine having a central axis, the stator comprising:

• a stator winding;
• and
• a stator yoke having a plurality of slots;
• wherein the stator winding includes a plurality of conductor segments connected to one another, wherein each conductor segment has one respective axially internal inner section, a first axially external outer section, and a second axially external outer section;
• wherein the respective inner section of each conductor segment is embedded into a respective slot and the respective outer sections of each conductor segment extend axially beyond the respective slots;
• wherein a duct for coolant flow in the axial direction is formed in one or more of the slots, the duct comprising a coolant pipe within which the respective inner section of one or more of the conductor segments is arranged;
• wherein the respective inner sections of a subset of the plurality of conductor segments comprise u-shaped conductors forming the coolant pipe between adjacent conductors;
• wherein the stator defines, at least in a first axial end region, a first coolant chamber fluidically encapsulated from a surrounding area, wherein the first coolant chamber surrounds at least a portion of the respective first axially external outer section of each of the conductor segments situated in the first axial end region;
• and
• wherein the first coolant chamber is fluidically connected to the ducts to conduct coolant into and/or out of the ducts.