Spacer element for a winding, kit, method for manufacturing a winding and winding

A spacer element for a winding of an electric device comprising:

• at least one connection member,
• a plurality of straight ribs, and
• at least one connection feature for forming a form-fitting connection to a connection feature of a further element of the electric device, wherein
• the ribs are connected to the connection member and are spaced from each other pairwise,
• the spacer element is arrangeable between two axially successive winding units of the winding during manufacturing of the winding,
• each two adjacent ribs delimit a flow channel for a cooling fluid, said flow channel extends between and along the two adjacent ribs and extends at least partially in radial direction,
• two adjacent ribs extend obliquely with respect to a straight connection line connecting first longitudinal ends of the two adjacent ribs,
• the two adjacent ribs run parallel to each other or are at least orientated similarly so that an angle between the main extension directions of the two adjacent ribs enclose an angle of at most 30° and so that the two adjacent ribs partially overlap in direction of the straight connection line.

A kit with a plurality of spacer elements, wherein

• for each spacer element
• the spacer element has at least one connection member,
• the spacer element has a plurality of straight ribs, wherein
• the ribs are connected to the connection member and are spaced from each other pairwise,
• the spacer element is arrangeable between two axially successive winding units of the winding during manufacturing of the winding,
• each two adjacent ribs delimit a flow channel for a cooling fluid, said flow channel extends between and along the two adjacent ribs and extends at least partially in radial direction,
• two adjacent ribs extend obliquely with respect to a straight connection line connecting first longitudinal ends of the two adjacent ribs,
• the two adjacent ribs run parallel to each other or are at least orientated similarly so that an angle between the main extension directions of the two adjacent ribs enclose an angle of at most 30° and so that the two adjacent ribs partially overlap in direction of the straight connection line,
• a first spacer element of the plurality of spacer elements has a smaller width than a second spacer element of the plurality of spacer elements,
• the second spacer element has a closed region at one longitudinal end of the flow channels and the closed region is configured to prevent a flow of the cooling fluid in a direction perpendicular to the flow channels.

A winding for an electric device, comprising:

• a plurality of axially successive winding units,
• at least one first spacer element and at least one second spacer element both arranged between successive winding units, wherein
• for each spacer element
• the spacer element has at least one connection member,
• the spacer element has a plurality of straight ribs, wherein
• the ribs are connected to the connection member and are spaced from each other pairwise,
• the spacer element is arrangeable between two axially successive winding units of the winding during manufacturing of the winding,
• each two adjacent ribs delimit a flow channel for a cooling fluid, said flow channel extends between and along the two adjacent ribs and extends at least partially in radial direction,
• two adjacent ribs extend obliquely with respect to a straight connection line connecting first longitudinal ends of the two adjacent ribs,
• the two adjacent ribs run parallel to each other or are at least orientated similarly so that an angle between the main extension directions of the two adjacent ribs enclose an angle of at most 30° and so that the two adjacent ribs partially overlap in direction of the straight connection line,
• the second spacer element has a greater width than the first spacer element,
• the second spacer element has a closed region at one longitudinal end of the flow channels and the closed region is configured to prevent a flow of the cooling fluid in a direction perpendicular to the flow channels,
• the closed region projects beyond the winding units in order to prevent a flow of a cooling fluid in a direction perpendicular to the flow channels.