US 2024/0258879 A1 · ROTOR MODULE WITH COOLING STRUCTURE

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

Dependent claims

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 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.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/398,381Filed 28 Dec 2023

Priority

KR 10-2023-001103927 Jan 2023

Published

1 Aug 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H02K 9/06
Having means for generating a flow of cooling medium: with fans or impellers driven by the machine shaft
H02K 1/2766
Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]: having a flux concentration effect
H02K 1/32
Rotating parts of the magnetic circuit: with channels or ducts for flow of cooling medium
H02K 9/16
Wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle: wherein the cooling medium circulates through ducts…

Rotor module with cooling structure

Life of this patent

Rotor module with cooling structure

Life of this patent

Abstract

Claims14