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US 11,689,073 B2Granted
Rotor core design
AssigneeGM Global Technology Operations LLC
InventorsJian Yao, Chengwu Duan, Yusheng Zou
Life of this patent
Estimating the term…
Abstract
An axial flux electric motor for an automobile includes a stator assembly, and a rotor assembly, the rotor assembly including a plurality of lamination blocks arranged in an annular pattern, a plurality of conductive wedges, one conductive wedge being positioned between each adjacent pair of lamination blocks, the plurality of lamination blocks and the plurality of conductive wedges defining a rotor core disk having an inner diameter and outer diameter and opposing axial faces, and a plurality of permanent magnets attached to one of the opposing axial faces of the rotor core disk.
Claims20
A rotor core for an axial flux electric motor, comprising:
- a plurality of lamination blocks arranged in an annular pattern;
- a plurality of conductive wedges, one conductive wedge being positioned between each adjacent pair of lamination blocks, the plurality of lamination blocks and the plurality of conductive wedges defining a rotor core disk having an inner diameter and outer diameter and first and second axial faces, the first axial face being opposite the second axial face, the plurality of lamination blocks and the plurality of conductive wedges collectively defining the first axial face of the rotor core disk, and the plurality of lamination blocks and the plurality of conductive wedges collectively defining the second axial face of the rotor core disk;
- and
- a plurality of permanent magnets attached to the first axial face of the rotor core disk;
- wherein each of the plurality of permanent magnets abuts at least one of the plurality of lamination blocks at the first axial face of the rotor core disk;
- and
- wherein each of the plurality of permanent magnets abuts at least one of the plurality of conductive wedges at the first axial face of the rotor core disk.
4 more elements
An axial flux electric motor, comprising:
- a stator assembly;
- and
- a rotor assembly, the rotor assembly including:
- a plurality of lamination blocks arranged in an annular pattern;
- a plurality of conductive wedges, one conductive wedge being positioned between each adjacent pair of lamination blocks, the plurality of lamination blocks and the plurality of conductive wedges defining a rotor core disk having an inner diameter and outer diameter and first and second axial faces, the first axial face being opposite the second axial face, the plurality of lamination blocks and the plurality of conductive wedges collectively defining the first axial face of the rotor core disk, and the plurality of lamination blocks and the plurality of conductive wedges collectively defining the second axial face of the rotor core disk;
- and
- a plurality of permanent magnets attached to one of the first axial face of the rotor core disk;
- wherein each of the plurality of permanent magnets abuts at least one of the plurality of lamination blocks at the first axial face;
- and
- wherein each of the plurality of permanent magnets abuts at least one of the plurality of conductive wedges at the first axial face.
7 more elements
A rotor core for an axial flux electric motor, comprising:
- an annular frame including a back plate and a plurality of conductive wedges, the back plate being disk shaped and the plurality of conductive wedges being formed on an axial surface of the back plate and spaced circumferentially around the back plate;
- a plurality of lamination blocks, one lamination block being positioned between each adjacent pair of conductive wedges on the annular frame, the frame, the plurality of lamination blocks and the plurality of conductive wedges defining a rotor core disk having an inner diameter and outer diameter and first and second axial faces, the first axial face being opposite the second axial face, the plurality of lamination blocks and the plurality of conductive wedges collectively defining the first axial face of the rotor core disk, and the plurality of lamination blocks and the plurality of conductive wedges collectively defining the second axial face of the rotor core disk;
- and
- a plurality of permanent magnets attached to the first axial face of the rotor core disk;
- wherein each of the plurality of permanent magnets abuts at least one of the plurality of lamination blocks at the first axial face;
- and
- wherein each of the plurality of permanent magnets abuts at least one of the plurality of conductive wedges at the first axial face.
4 more elements
Dependencies are inferred from the claim text.