Electric motor vehicle traction motor with stator having slot molding and liquid cooled end winding
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United States of America
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Feb 11, 2025
Grant Date -
Oct 20, 2022
app pub date -
Mar 24, 2022
filing date -
Mar 24, 2022
priority date (Note) -
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Abstract
An electric motor vehicle traction motor has a motor housing, a liquid-cooled motor stator and a dry running internal motor rotor which is separated fluidically from the motor stator. The motor stator is formed by a stator body with radial stator slots and a plurality of stator coils. The axial phase windings are arranged in the stator slots, and the winding heads of protrude axially out of the stator slots. A slot potted body is made from a potting material and by way of which the stator coil axial phase windings are potted into the stator slots in a fluid-tight manner. The stator coil winding heads are of potting-free configuration and protrude in each case directly into a fluid-tight cooling space. As a result of the omission of a separate split cage, a small air gap is realized and manufacturing costs are reduced.
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