Stator and rotating electric machine including the same

Patent metadata

Field	Value
Publication number	US-10333371-B2
Application number	US-201414147631-A
Country	US
Kind code	B2
Filing date	Jan 6, 2014
Priority date	Jan 9, 2013
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

A stator includes a stator core, a winding, and a temperature sensor. In the stator core, a plurality of slots are formed in a circumferential direction of the stator. The winding is formed by a plurality of conductors which are housed in the slots and are electrically connected. The slots are formed such that a predetermined number of the conductors are housed and arrayed in a radial direction of the stator. The temperature sensor is located in at least one of the slots and detects temperature of the conductors.

First claim

What is claimed is:

1. A stator comprising:
a stator core in which a plurality of slots are arranged in a circumferential direction of the stator;
a winding that is configured by a plurality of conductors, each of the conductors including a slot-housed portion that is housed in each of the slots and a coil end portion that projects from an end surface of each of the slots in an axial direction of the stator, the winding being stacked and arrayed in a radial direction of the stator;
a plurality of wedges that are fitted into the slots and provided between one of two circumferential-direction wall surfaces of each of the slots and a circumferential-direction end surface of the arrayed conductors facing the one of two circumferential-direction wall surfaces of each of the slots; and
a temperature sensor that is provided in at least one of the wedges so that the temperature sensor is circumferentially between (i) all of slot-housed portions of the arrayed conductors housed in the slot into which the at least one of the wedges is fitted and (ii) the one of two circumferential-direction wall surfaces of the slot into which the at least one of the wedges is fitted; wherein:
the at least one of the wedges includes a radially outer portion and a radially inner portion;
the radially outer portion is thicker than the radially inner portion and has a notch provided in a corner of the radially outer portion; and
the temperature sensor is disposed in the notch.

2. The stator according to claim 1 , wherein:
a wedge-shaped space is formed between one of two circumferential-direction wall surfaces of each of the slots and a circumferential-direction end surface of the arrayed conductors facing the one of two circumferential-direction wall surfaces of each of the slots; and
each of the wedges is a wedge-shaped plate member having a shape that is substantially similar to a shape of the wedge-shaped space.

3. A rotating electric machine comprising:
a stator; and
a rotor that opposes the stator in a rotatable manner,
the stator including:
a stator core in which a plurality of slots are arranged in a circumferential direction of the stator;
a winding that is configured by a plurality of conductors, each of the conductors including a slot-housed portion that is housed in each of the slots and a coil end portion that projects from an end surface of each of the slots in an axial direction of the stator, the winding being stacked and arrayed in a radial direction of the stator;
a plurality of wedges that are fitted into the slots and provided between one of two circumferential-direction wall surfaces of each of the slots and a circumferential-direction end surface of the arrayed conductors facing the one of two circumferential-direction wall surfaces of each of the slots; and
a temperature sensor that is provided in at least one of the wedges so that the temperature sensor is circumferentially between (i) all of slot-housed portions of the arrayed conductors housed in the slot into which the at least one of the wedges is fitted and (ii) the one of two circumferential-direction wall surfaces of the slot into which the at least one of the wedges is fitted; wherein:

the at least one of the wedges includes a radially outer portion and a radially inner portion; and
the radially outer portion is thicker than the radially inner portion and has a notch provided in a corner of the radially outer portion; and
the temperature sensor is disposed in the notch.

4. The rotating electric machine according to claim 3 , wherein:
a wedge-shaped space is formed between one of two circumferential-direction wall surfaces of each of the slots and a circumferential-direction end surface of the arrayed conductors facing the one of two circumferential-direction wall surfaces of each of the slots; and
each of the wedges is a wedge-shaped plate member having a shape that is substantially similar to a shape of the wedge-shaped space.

Assignees

• Denso Corp

Inventors

• Takahashi Yuki
• Suzuki Hideaki
• Seguchi Masahiro

Classifications

• H02K3/34

  between conductors or between conductor and core, e.g. slot insulation · CPC title

• H02K11/00

  Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection (casings, enclosures or supports H02K5/00) · CPC title

• H02K2213/03

  Machines characterised by numerical values, ranges, mathematical expressions or similar information · CPC title

• H02K3/345

  between conductor and core, e.g. slot insulation · CPC title

• H02K11/20

  for measuring, monitoring, testing, protecting or switching (rectifiers H02K11/04; power electronics H02K11/33) · CPC title