Abstract: The present disclosure relates to a motor including a motor housing, a stator provided in the motor housing, a coil wound around the stator, a rotor rotatably provided inside the stator, a water-cooled cooling part provided in the motor housing and including a water jacket configured to define a coolant flow path through which a coolant circulates, and an oil-cooled cooling part provided in the motor housing and configured to spray cooling oil to the coil, thereby obtaining an advantageous effect of improving cooling performance, stability, and reliability.

Abstract: Provided is a rotor, and more particularly, a rotor with improved cooling efficiency. The rotor module with a cooling structure of the present disclosure may more directly cool a rotor, thereby securing improved performance of a motor by the rotor directly equipped with a cooling structure including a cooling passage passing through the inside of a rotor core.

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.

Abstract: The present disclosure relates to a motor with an exposed cooling structure. In the motor with an exposed cooling structure, a first groove portion is formed in a rotor, a second groove portion is formed in a stator, and cooling oil injected to the second groove portion of the stator and introduced into the first groove portion of the rotor is scattered by a centrifugal force caused by rotation of a rotation shaft to cool the stator and the rotor.