Stator for rotary electric machine and rotary electric machine using same

Patent metadata

Field	Value
Publication number	US-11245299-B2
Application number	US-201716072396-A
Country	US
Kind code	B2
Filing date	Jan 19, 2017
Priority date	Mar 31, 2016
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

Provided is a rotary electric machine which is configured to draw three-phase output lines from a connection side coil end by an easy process. A stator for a rotary electric machine according to the present invention includes a plurality of segment coils including connection-side winding portions and non-connection-side winding portions. The connection-side winding portions are arranged on one side of a stator core and connected to slots with the same slot pitch, and the non-connection-side winding portions are arranged on the other side of the stator core and inserted into the slots with a plurality of kinds of slot pitches. The connection-side winding portions include a first connection group and a second connection group. The first connection group is provided with a plurality of terminal portions for connecting the segments, and the second connection group connects layers different from those in the first connection group, and is provided with a plurality of terminal portions.

First claim

The invention claimed is:

1. A stator for a rotary electric machine comprising
a plurality of segment coils which includes:
connection-side winding portions which are arranged on one side of a stator core and connected to slots with the same slot pitch; and
non-connection-side winding portions which are arranged on the other side of the stator core and inserted into the slots with a plurality of slot pitches,
wherein the connection-side winding portions include:
a first connection group which is provided with a plurality of terminal portions for connecting the segment coils, and
a second connection group which connects layers different from those in the first connection group, and is provided with a plurality of terminal portions wherein when n=1 or more, the first connection group connects between the terminal portions of segments of a 2n−1 layer and a 2n layer, and the second connection group connects between the terminal portions of segments of a 2n layer and a 2n +1 layer.

2. The stator for a rotary electric machine according to claim 1 , wherein
the connection-side winding portions are circumferentially connected to the slots with the same slot pitch in layers of the segment coils in a radial direction of the stator core.

3. The stator for a rotary electric machine according to claim 1 , further comprising
at least one output line which is provided in the connection-side winding portion.

4. The stator for a rotary electric machine according to claim 3 , wherein
a plurality of a terminal portions of the first connection group is aligned in a radial direction, and
the output lines and the plurality of the terminal portions of the second connection group are arranged in a radial direction.

5. The stator for a rotary electric machine according to claim 4 , wherein
the output lines are arranged on an outermost peripheral side or an innermost peripheral side in a radial direction.

6. A rotary electric machine comprising the stator for a rotary electric machine according to claim 1 .

Assignees

• Hitachi Astemo Ltd

Inventors

• Kano Yuji
• Koizumi Takayuki
• Saito Yasuyuki
• Misaki Seigo
• Shimizu Hisaya

Classifications

• H02K3/28 Primary

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title

• H02P9/30

  using semiconductor devices · CPC title

• H02P27/06

  using DC to AC converters or inverters (H02P27/05 takes precedence) · CPC title

• H02K3/50

  Fastening of winding heads, equalising connectors, or connections thereto · CPC title

• H02K47/30

  Single-armature phase-number converters without frequency conversion · CPC title