Motor core for electric vehicle composed of dissimilar materials and method for manufacturing the same
AssigneesHyundai Motor Company, Kia Corporation
InventorsDohoon Kim, Jun Young Song
Life of this patent
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Abstract
A motor core for an electric vehicle is provided, which may include a back yoke part formed of a first material that is a ferromagnetic material and having a cylindrical shape, a plurality of tooth coupling grooves formed as straight longitudinal grooves on an inner circumference of the back yoke part and formed at regular intervals, and a plurality of stator teeth respectively coupled to the tooth coupling grooves and forming stator slots where stator windings are coupled, wherein the stator teeth are made of a second material that is a soft magnetic amorphous material.
Claims16
A motor core for an electric vehicle, the motor core comprising:
- a back yoke part formed of a first material that is a ferromagnetic material and having a cylindrical shape;
- a plurality of tooth coupling grooves formed as straight longitudinal grooves on an inner circumference of the back yoke part and formed at regular intervals;
- and
- a plurality of stator teeth respectively coupled to the tooth coupling grooves and forming stator slots where stator windings are coupled,
- wherein the stator teeth are made of a second material that is a soft magnetic amorphous material.
A method for manufacturing a motor core for an electric vehicle, the method comprising:
- manufacturing a back yoke part by laminating a plurality of thin film sheets made of a first material that is a ferromagnetic material;
- manufacturing stator teeth by laminating a plurality of thin film sheets made of a second material that is a soft magnetic amorphous material;
- and
- press-fitting and coupling a plurality of the stator teeth to an inner circumference of the back yoke part.
A method for manufacturing a motor core for an electric vehicle, the method comprising:
- laminating a plurality of thin film sheets made of a first material to form a back yoke part;
- laminating a plurality of thin film sheets made of a second material that is a second material softer than the first material to form stator teeth;
- and
- press-fitting and coupling a plurality of the stator teeth to an inner circumference of the back yoke part.
Dependencies are inferred from the claim text.