Title:
ROTARY ELECTRIC MACHINE AND ROTARY ELECTRIC MACHINE DRIVING DEVICE
Document Type and Number:
Japanese Patent JP2014187834
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To cool a large number of permanent magnets on one side in a rotating direction of each permanent magnet pair, in a rotary electric machine in which a rotor has a structure including a plurality of permanent magnet pairs.SOLUTION: A rotary electric machine includes a rotor 14 fixed to a rotation shaft 22 and rotatably disposed, a stator oppositely disposed on an outer periphery of the rotor 14, and a coolant supply mechanism for supplying a coolant to the inside of the rotation shaft 22. The rotor 14 includes a plurality of permanent magnet pairs 40n and 40s provided at plural places in a circumferential direction and forming rotor magnetic poles 52n and 52s, a plurality of axial coolant channels 46, and a plurality of inner diameter side connection coolant channels 48 connected to the axial coolant channel 46, and making the coolant supplied from the inside of the rotation shaft 22 flow toward the axial coolant channels 46. Each axial coolant channel 46 is disposed so as to deviate to permanent magnets 50n2 and 50s2 on one side in the rotating direction of each permanent magnet pair 40a and 40s.
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Inventors:
HIRAI YU
Application Number:
JP2013061827A
Publication Date:
October 02, 2014
Filing Date:
March 25, 2013
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H02K1/27; H02K1/32; H02K9/19; H02K21/12
Attorney, Agent or Firm:
Patent business corporation YKI international patent firm