ROTARY ELECTRICAL MACHINE

WIPO Patent Application WO/2021/079397

A1

Provided is a rotary electrical machine having a novel configuration with which the axial-direction size of the rotary electrical machine can be reduced when an electrical connection conductor is disposed on welding-side terminal sections of coil ends of segment coils.　The present invention has: a stator core 21 having slots 37 radially extending in the radial direction; a plurality of segment coils 34 that are accommodated in the slots 37 so as to be stacked in the radial direction; and a neutral point busbar 33 that is disposed on welding sides of the coil ends of the segment coils 34, that connects different segment coils, and that comprises a connection wiring section and a connecting section. A portion of at least the connection wiring section is disposed in a radial-direction space RS that is formed by the segment coils 34 in the radial direction in a state in which the segment coils 34 are mounted. The connection wiring section can be disposed in the radial-direction space RS formed by the segment coils 34 in the radial direction, and the axial-direction size of a rotary electrical machine can be reduced by suppressing axial-direction lengthening of the space in which an electrical connection conductor 33 is disposed.

MISAKI SEIGO (JP)
KOIZUMI TAKAYUKI (JP)
KITAJIMA SHINGO (JP)
SHIMIZU HISAYA (JP)

PCT/JP2019/041256

April 29, 2021

October 21, 2019

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HITACHI AUTOMOTIVE ELECTRIC MOTOR SYSTEMS LTD (JP)

H02K3/50; H02K3/28

JP2019115178A	2019-07-11
JP2017184558A	2017-10-05
JP2015076905A	2015-04-20
JP2011045165A	2011-03-03

POLAIRE I.P.C. (JP)

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