US 12,512,715 B2Granted

Winding mat for an electric machine

AssigneeSchaeffler Technologies AG & Co. KG

InventorsChristian Morgen, Dennis Kuhl, Alexander Lepold

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Abstract

A dynamo electric machine stator which is easy to assemble, includes a stator body with stator grooves and a winding mat with groove sections arranged in the stator grooves and lie one over the other in different radial positions, and with head sections which connect the groove sections. A wave winding conductor changes position by precisely one radial position in the stator grooves in the center of the extension of the wave winding conductor in the winding direction. The winding mat includes a first sub-winding mat with one first set of wave winding conductors for each section, the first sets being joined together in an X-shaped manner in the region of the position change such that the conductors are aligned in a specific manner at the intersections between the wave winding conductors.

Claims20

Dependent claims

A stator of a dynamo electric machine, the stator comprising:

a stator body with stator grooves;
a winding mat with groove sections arranged in the stator grooves and lie one over another in different radial positions;
head sections which connect the groove sections;
wave winding conductors that each change position by precisely one radial position in the stator grooves in a center of an extension of the wave winding conductor in a winding direction;
and
the winding mat comprises a first sub-winding mat, which comprises precisely one first set of said wave winding conductors for each said groove section, said first sets being joined together with an X-shape in a region of a position change such that at intersections between the wave winding conductors of a first and a second of said groove sections, the wave winding conductors of the first section constantly lie over said wave winding conductors of the second section on one side of the position change and the wave winding conductors of the second section constantly lie over said wave winding conductors of the first section on an other side.

3 more elements

A method for producing a winding mat for a stator of a dynamo electric machine, the method comprising:

producing a first sub-winding mat by
providing a first set of with a set number of wave winding conductors for each section of the stator, wherein the wave winding conductors each have groove sections and head sections connecting the groove sections;
arranging the set number of wave winding conductors such that the groove sections of the respective wave winding conductors follow one another at a distance of two stator grooves;
and
joining together in an X-shaped manner all the first sets to form the first sub-winding mat such that the wave winding conductors change position in a center region of extensions thereof as viewed in a winding direction, such that at intersections of the wave winding conductors of a first and second section, the wave winding conductors of the first section constantly lie above the wave winding conductors of the second section on one side of a position change and the wave winding conductors of the second section constantly lie above the wave winding conductors of the first section on an other side.

2 more elements

Dependencies are inferred from the claim text.