Stator of an electric prime mover with sealed separation plate

A stator of an electric prime mover comprising:

• a stator core and windings of at least one electrical conductor arranged in an annular shape on the stator core, and at least one wet chamber for a coolant to flow through, so that heat from at least one of the windings can be absorbed by the coolant, a separation element separating the wet chamber in a substantially liquid-tight manner from a dry chamber of the electric prime mover at least on an axial side of the stator, wherein the separation element is sealed with respect to the stator core at a first periphery and at a second periphery, wherein the first periphery has a smaller radial extent than a radial outer side of the stator core and a larger radial extent than a radial outer side of the annular shape of the windings and the second periphery has a larger radial extent than a radial inner side of the stator core and a smaller radial extent than a radial inner side of the annular shape of the windings, wherein the separation element axially delimits the stator, wherein the wet chamber is substantially annular, the separation element has two substantially annular walls arranged concentrically and extending in an axial direction, and an annular cavity between the annular walls axially and radially separating the wet chamber from an adjacent dry chamber, wherein the separation element is sealed to the stator core at the annular walls in a radial direction, and
• wherein at least one of the annular walls is thicker in a surface region of an abutment of a seal than on a side of delimitation of the wet chamber.

An electric prime mover, comprising a stator and a rotor, wherein the stator includes:

• a stator core and windings of at least one electrical conductor arranged in an annular shape on the stator core, and at least one wet chamber for a coolant to flow through, so that heat from at least one of the windings can be absorbed by the coolant, a separation element separating the wet chamber in a substantially liquid-tight manner from a dry chamber of the electric prime mover at least on an axial side of the stator, wherein the separation element is sealed with respect to the stator core at a first periphery and at a second periphery, wherein the first periphery has a smaller radial extent than a radial outer side of the stator core and a larger radial extent than a radial outer side of the annular shape of the windings and the second periphery has a larger radial extent than a radial inner side of the stator core and a smaller radial extent than a radial inner side of the annular shape of the windings;
• wherein the rotor is arranged in the dry chamber of the electric prime mover;
• and
• wherein the separation element is compressively preloaded in an axial direction on at least one of the stator core or at least one winding.