IP Library Granted Patent US 10,630,129
Granted Patent B2
US 10,630,129 · App. 16/381,858 · Granted Apr 21, 2020

Stator for rotating electrical machine and rotating electrical machine including the same

Inventors: Kenichi Nakayama (Hitachinaka, JP); Tomohiro Fukuda (Hitachinaka, JP); Akira Toba (Hitachinaka, JP); Shinji Yamazaki (Hitachinaka, JP); Takashi Genmoto (Hitachinaka, JP); Naoki Nishikawa (Hitachinaka, JP); Hisaya Shimizu (Hitachinaka, JP)
Assignee: Hitachi Automotive Systems, Ltd.
H02K3/30H02K3/38H02K15/0056H02K15/12
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Quick Facts
Patent No.
US 10,630,129
App. No.
16/381,858
Granted
Apr 21, 2020
Kind
B2
Abstract

Provided are a coil having excellent insulation properties, a rotating electrical machine equipped with the same, and a method for manufacturing the same. The coil ( 60 ) has a covered portion where a conductive body ( 602 ) is covered with an insulating film ( 612 ) and a stripped portion where the insulating film is stripped off, and the stripped portion is electrophoretically coated with a resin material ( 601 ). The coil ( 60 ) may have a configuration wherein segment conductors ( 28 ) each having a covered portion and stripped portion are included, connection parts are formed by the stripped portions of two different segment conductors ( 28 ) being connected at coil ends ( 62 ), and the thickness of the resin material ( 601 ) is no more than the thickness of the insulating film ( 612 ) at the boundary portion ( 630 ) between the covered portion and the stripped portion.

Claims (18)

1. A stator for a rotating electrical machine comprising:

a coil covered with an insulating film at its outer periphery, wherein

the coil has a partial lack in the insulating film, and

a resin material is adhered to the partial lack of the insulation film, through electrodeposition, wherein the coil includes:

a covered portion comprising a conductive body and an insulating film covering the conductive body; and

a stripped portion at which the insulating film has been stripped off, wherein

the stripped portion is provided with coating of a resin material through electrodeposition; and

wherein the coil includes:

segment conductors each having the covered portion and the stripped portion, wherein

 two different segment conductors, out of the segment conductors, are connected at their stripped portions to each other in a coil end to form a connection part, and

 the resin material has a thickness equal to or less than a thickness of the insulating film, at a boundary portion between the covered portion and the stripped portion.

2. The stator for a rotating electrical machine according to claim 1 , wherein

the insulating film comprises two or more insulation layers, and

the thickness of the resin material is equal to or less than a thickness of the insulation layers other than an outermost insulation layer, out of the two or more insulation layers in the insulating film.

3. The stator for a rotating electrical machine according to claim 1 , wherein the resin material covers an insulation layer on the conductive body, out of the two or more insulation layers in the insulating film.

4. The stator for a rotating electrical machine according to claim 1 , wherein the resin material has an average thickness of 5 to 50 micrometers.

5. The stator for a rotating electrical machine according to claim 1 , further comprising a stator core, wherein a portion of the stator core is coated with a resin through electrodeposition.

6. A rotating electrical machine comprising the stator according to claim 1 .

Assignments (1)
CHANGE OF NAME Recorded Mar 25, 2021
From: HITACHI AUTOMOTIVE SYSTEMS, LTD.
To: HITACHI ASTEMO, LTD.
Reel/Frame 056299/0447 →
Priority Claims (1)
JP 2013-052612 · Mar 15, 2013 · national
Continuity (2)
Division 14776291
Related Publication 20190305623A1 · Oct 3, 2019