Rotor module with cooling structure
AssigneeHyundai Mobis Co., Ltd.
InventorsSung Wook Lee, Tae Wook Ha, Byung Ryel In
Life of this patent
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Abstract
The present invention relates to a rotor, and more particularly, to a rotor with increased cooling efficiency. According to the present invention, a rotor module may maximize a cooling effect by allowing cooling oil to flow inside a rotor to directly cool the rotor and directly cool a rotor heating unit, thereby stably implementing specifications requiring high power or a high current density, may be designed to scatter the cooling oil inside the rotor to the outside to cool areas around an end coil of a drive motor at the same time, and may reduce the number of pats by removing cooling parts for cooling the existing stator, thereby reducing costs.
Claims14
A rotor module with cooling structure, comprising:
- a cylindrical rotor core with a hollow inside;
- and
- a rotor shaft that is fitted and fixed to a center of the rotor core, includes a cooling fluid flow path filled with a cooling fluid therein, and rotates about a central axis of the rotor core,
- wherein the rotor core includes a communication groove having a predetermined depth on an inner side surface,
- the rotor shaft includes first discharge flow paths each having one end communicating with the cooling fluid flow path and the other end communicating with the rotor shaft and the communication groove of the rotor core,
- the cooling fluid flow path has one end open and the other end closed, and
- cross-sectional areas of the first discharge flow paths increase toward the other end.
A rotor module with cooling structure, comprising:
- a cylindrical rotor core with a hollow inside;
- and
- a rotor shaft that is fitted and fixed to a center of the rotor core, includes a cooling fluid flow path filled with a cooling fluid therein, and rotates about a central axis of the rotor core,
- wherein the rotor core includes a communication groove having a predetermined depth on an inner side surface,
- the rotor shaft includes a first discharge flow path each having one end communicating with the cooling fluid flow path and the other end communicating with the rotor shaft and the communication groove of the rotor core, and
- the cooling fluid flow path has one end open and the other end closed, and
- wherein a center of the first discharge flow path is spaced apart from a center of the cooling fluid flow path by a predetermined distance in a vertical direction of both the central axis of the rotor core and a direction of extension of the first discharge flow path.
Dependencies are inferred from the claim text.