Title:
ROTARY ELECTRIC MACHINE AND IN-WHEEL MOTOR DRIVE DEVICE PROVIDED WITH ROTARY ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/004065
Kind Code:
A1
Abstract:
Provided is a rotary electric machine capable of efficiently cooling a coil end without providing complicated piping for coolant inside the rotary electric machine. The rotary electric machine is provided with a stator (5), a rotor (6), and a cooling mechanism (35). The stator (5) includes: a stator core (8) in which a plurality of tooth parts (7a) are arranged in an annular pattern; and a stator coil (9) wound on each of the tooth parts (7a). The cooling mechanism (35) includes: a coolant channel (36) for cooling; and a guide plate (37). The coolant channel (36) guides a coolant (R) to an area above coil ends (9a) located in the upper section. The guide plate (37) receives, at a coolant guide surface (38), the coolant (R) discharged through a discharge port (36c) of the coolant channel (36), and guides the coolant (R) along the circumference of the stator (5) to cause the coolant(R) to flow to the coil ends (9a). A protrusion (37d) for preventing reverse flow of the coolant (R) in the circumferential direction is provided to the coolant guide surface (38) at a position immediately below the discharge port (36c).
Inventors:
MAKINO YUSUKE (JP)
KURODA MASARU (JP)
KURODA MASARU (JP)
Application Number:
PCT/JP2018/023736
Publication Date:
January 03, 2019
Filing Date:
June 22, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
H02K9/19; B60K7/00; B60K11/04; B60K17/14
Foreign References:
| JP2011097761A | 2011-05-12 | |||
| JP2013055799A | 2013-03-21 | |||
| JP2013013229A | 2013-01-17 | |||
| JP2017093002A | 2017-05-25 | |||
| JP2012205374A | 2012-10-22 | |||
| JP2004180376A | 2004-06-24 | |||
| JP2014107874A | 2014-06-09 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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