Stator, rotating electric machine, vehicle, and stator manufacturing method

Patent metadata

Field	Value
Publication number	US-2016276887-A1
Application number	US-201615074648-A
Country	US
Kind code	A1
Filing date	Mar 18, 2016
Priority date	Mar 19, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

A stator provided with coils that are interconnected by distributed windings on a stator core of a rotating electric machine having: a stator core module comprising a stator core wherein one part of a linear conductor portion of the coil is disposed in a slot; and a mold end, formed through insulator molding of a coil end portion of the coil, wherein: the linear conductor portion of the stator core module comprises a first junction portion at a conductor end portion that is disposed protruding from the stator core toward the mold end side; and the coil end portion of the mold end comprises a second junction portion at a conductor portion disposed protruding from an end portion of the insulator mold toward the stator core module side; having a structure wherein the first junction portion and the second junction portion are joined.

First claim

What is claimed is:

1 . A stator provided with coil that is wound by distributed windings on a stator core of a rotating electric machine comprising:
a stator core module comprising a stator core wherein one part of a linear conductor portion of the coil is disposed in a slot; and a mold end, formed through insulator molding of a coil end portion of the coil,
wherein
the linear conductor portion of the stator core module comprises a first junction portion at a conductor end portion that is disposed protruding from the stator core toward the mold end side; and
the coil end portion of the mold end comprises a second junction portion at a conductor portion disposed protruding from an end portion of the insulator mold toward the stator core module side; and
a structure wherein the first junction portion and the second junction portion are joined.

2 . The stator as set forth in claim 1 , wherein
a plurality of second junction portions of the mold end is disposed at specific intervals along the circumferential direction in two lines, on the inner peripheral side and the outer peripheral side; the mold end has a round cylindrically shaped insulator between a second junction portion on the inner peripheral side and a second junction portion on the outer peripheral side; and the round cylindrically shaped insulator is disposed protruding further to the stator core module side than the second junction portion from the end portion of the insulating mold.

3 . A rotating electric machine comprising a stator as set forth in claim 1 .

4 . A vehicle comprising a rotating electric machine as set forth in claim 3 .

5 . A manufacturing method of a stator provided with coil that is wound by distributed windings on a stator core of a rotating electric machine comprising:
the stator has a stator core module that comprises a stator core wherein individual parts of linear conductor portions of coils are disposed in slots, and a mold end wherein the end portions of the coils are formed through insulator molding; the linear conductor portion of the stator core module comprises a first junction portion at a conductor end portion that is disposed protruding from the stator core toward the mold end side; and the coil end portion of the mold end comprises a second junction portion at a conductor portion disposed protruding from an end portion of the insulator mold toward the stator core module side;
wherein the method further comprising a step of bonding the first junction portion and the second junction portion.

6 . A method of manufacturing a stator, comprising the steps of:
providing coil wound by distributed windings on a stator core of a rotating electric machine; disposing individual parts of linear conductor portions of coils in slots, and forming a mold end and end portions of the coils through insulator molding; forming, on the linear conductor portion of the stator core, a first junction portion at a conductor end portion; disposing the first junction portion protruding from the stator core toward the mold end; forming a second junction portion at a conductor portion of the coil end portion of the mold end; disposing the second junction portion protruding from an end portion of the insulator mold toward the stator core; and
bonding the first junction portion and the second junction portion.

Assignees

• Nidec Copal Corp

Inventors

• Watanabe Masakazu
• Fukasaku Yoshinori
• Iwase Masato
• Kunii Koki
• Nagasawa Hirofumi

Classifications

• H02K15/35

  Form-wound windings · CPC title

• H02K15/36

  Processes or apparatus for simultaneously twisting two or more open ends of hairpins after their insertion into the machine (for simultaneously twisting two or more hairpins prior to mounting into the machine H02K15/0428) · CPC title

• B60L11/1803

  Operations & Transport · mapped topic

• H02K15/026

  Wound cores · CPC title

• H02K3/12 Primary

  arranged in slots · CPC title