Motor cooling structure

A motor cooling structure comprising a rotor connected to a rotary shaft, a stator disposed on the rotor and comprising a stator core and coils, and a housing surrounding the rotor and the stator,

• wherein the motor cooling structure comprises:
• a first cover extending along an inner circumferential surface of the coils between the stator core and the coils, the first cover being disposed on both sides of the stator core;
• and
• at least one second cover disposed on the outside of the coils with respect to the stator core and provided to extend along the inner circumferential surfaces of the coils;
• and
• wherein oil for cooling a motor through a chamber located between the stator core, the coils, and the housing, and a channel, located between the stator core and the housing, flows;
• wherein the at least one second cover is in contact with the housing to separate the chamber into a plurality of spaces;
• and
• wherein the oil flows between the plurality of spaces in the chamber through a first hole defined in each of the first cover and the at least one second cover, and wherein the oil is injected to the rotor through a second hole defined in the at least one second cover.