Title:
COIL COOLING STRUCTURE OF MOTOR
Document Type and Number:
Japanese Patent JP2022107337
Kind Code:
A
Abstract:
To provide a coil cooling structure 10 of a motor which can directly, uniformly and efficiently cool a coil 38 arranged in a slot formed in a stator core 32.SOLUTION: The coil cooling structure 10 of the motor includes: a rotor core which is fixed to an outer periphery of a rotary shaft provided with a supply path in which a coolant flows, and has a branch path that communicates with the supply path and penetrates to the outside in a radial direction; a stator core 32 which is arranged outside in the radial direction of the rotor core so as to have a cavity and stores coils 38 in a plurality of slots; a plurality of first flow channels 40 which are formed in the stator core 32, include the slots and penetrate through the stator core 32 in the radial direction; a plurality of second flow channels 50 which are formed above the rotary shaft in the stator core 32 when an axial direction of the rotary shaft is a horizontal direction, include the slots and extend in the radial direction, and penetrate the stator core 32 only on the outer peripheral side in the radial direction; and a supply part for supplying a coolant from above the stator core 32.SELECTED DRAWING: Figure 2
Inventors:
SAKAMOTO HIRONOBU
Application Number:
JP2021002216A
Publication Date:
July 21, 2022
Filing Date:
January 08, 2021
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H02K1/20; H02K9/19
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office