Invention Grant
- Patent Title: Rotating electric machine
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Application No.: US15048118Application Date: 2016-02-19
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Publication No.: US09887596B2Publication Date: 2018-02-06
- Inventor: Akito Tamura
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Oliff PLC
- Priority: JP2015-030649 20150219
- Main IPC: H02K9/00
- IPC: H02K9/00 ; H02K3/24 ; H02K3/12 ; H02K9/19

Abstract:
In a rotating electric machine, a stator includes a stator core having slots formed therein and a stator coil comprised of phase windings each of which includes in-slot portions and turn portions. The turn portions of the phase windings together constitute a coil end part of the stator coil. Further, a cooling mechanism is provided to drop liquid coolant onto the coil end part. Moreover, the turn portions of the phase windings include long-pitch turn portions and short-pitch turn portions. In the coil end part, there are axially-overlapping pairs of the long-pitch and short-pitch turn portions over an entire circumferential range of the stator coil. For each axially-overlapping pair of the long-pitch and short-pitch turn portions, the short-pitch turn portion is located axially inside the long-pitch turn portion and faces the long-pitch turn portion through a void space formed therebetween over entire lengths of the long-pitch and short-pitch turn portions.
Public/Granted literature
- US20160248289A1 ROTATING ELECTRIC MACHINE Public/Granted day:2016-08-25
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