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1. (WO2017154837) DRIVE DEVICE FOR VEHICLES

Pub. No.:    WO/2017/154837    International Application No.:    PCT/JP2017/008777
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: H02K 9/19
B60L 11/14
H02K 11/25
Applicants: NTN CORPORATION
NTN株式会社
Inventors: SUZUKI, Kenichi
鈴木 健一
Title: DRIVE DEVICE FOR VEHICLES
Abstract:
Provided is a drive device for vehicles, the drive device being configured so that the stator coil of a horizontally mounted electric motor can be efficiently cooled by lubricating oil supplied from the upper part of a housing, the stator coil will be unlikely to be affected by the supplied lubricating oil and by lubricating oil accumulated on the bottom of the housing, and the maximum temperature of the stator coil can be detected. An electric motor (1) has a housing (8), a stator (9), and a rotor (10). The stator (9) comprises a stator core (30) and a stator coil (31). The stator coil (31) comprises a plurality of individual coils (33) provided to the teeth (30b) of the stator core (30). The housing (8) has lubricating oil supply means (70, 71) for supplying lubricating oil onto the coil end (33a) of an individual coil (33) located at an upper part. A temperature detection means (75) for detecting the temperature of the stator coil (31) is disposed below the axis (O) of the rotor (10) and above the level (66) of lubricating oil accumulated on the bottom of the housing (8).