STATOR FOR ROTATING MACHINE, HOLDER FOR USE WITH STATOR, ROTATING MACHINE, AND AUTOMOBILE

• US 20130106250A1
• Filed: 11/02/2012
• Published: 05/02/2013
• Est. Priority Date: 11/02/2011
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation), Toshiba Industrial Products Manufacturing Corporation (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation), Toshiba Industrial Products Manufacturing Corporation (Toshiba Corporation)
• Inventors: Ito, Wataru, Kanada, Kazuma
• Granted Patent: US 9,203,275 B2
• Time in Patent Office: Days
• US Class Current: 310/67.R
• CPC Class Codes: B60L 2220/50 Structural details of electrical machines
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles
• CPC Class Codes: H02K 7/006 Structural association of a motor or generator with the drive train of a motor vehicle
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A stator of a rotating machine includes a stator core, a plurality of winding wires wound on the stator core, a first bus ring, a second bus ring, and a holder device. The first bus rings each has a first radial dimension and selectively connects electrically with each of the wires. The second bus ring has a second radial dimension different from the first radial dimension and selectively connects electrically with each of the wires. The holder device holds the first and the second bus rings.

The holder device includes a first and a second support portion. The first support portion supports a plurality of the first bus rings aligned along an axial direction of the stator core. The second support portion supports the second bus ring on a radially outward or inward side of the first bus rings.

Claims

1. A stator of a rotating machine comprising:

a stator core;

a plurality of winding wires wound on the stator core;

a plurality of first bus rings each having a first radial dimension and selectively establishing electrical connection with each of the winding wires;

a second bus ring having a second radial dimension different from the first radial dimension and selectively establishing electrical connection with each of the winding wires; and

a holder device holding the first bus rings and the second bus ring, the holder device including;

a first support portion supporting the plurality of first bus rings aligned along an axial direction of the stator core; and

a second support portion supporting the second bus ring on a radially outward side or a radially inward side of the first bus rings.

2. The stator according to claim 1, wherein the plurality of first bus rings each comprises an annular member having a main surface orthogonal to the axial direction of the stator core, and the second bus ring comprises a belt-shaped annular member being relatively wide in the axial direction of the stator core.

3. The stator according to claim 1, wherein the holder device comprises a plurality of holder members disposed along the alignment of each of the winding wires wound on the stator core, each of the holder members comprising:

a partition wall parting the plurality of first bus rings and the second bus ring and extending in the axial direction of the stator core,

a fitting protrusion serving as the first support portion and protruding in a first direction, from a first side of the partition wall, in a form of multiple shelves fitting with the plurality of first bus rings,

a protruding piece serving as the second support portion and protruding in a second direction opposite the first direction, from a second side of the partition wall, the protruding piece extending, from a midway portion thereof, in a third direction parallel to the partition wall and intersecting with a fourth direction in which the multiple shelves extend, thereby defining a fitting groove between the second side of the partition wall and the protruding piece, the fitting groove opening toward a tip of the protruding piece and establishing a fitting engagement with the second bus ring.

4. The stator according to claim 2, wherein the holder device comprises a plurality of holder members disposed along the alignment of each of the winding wires wound on the stator core, each of the holder members comprising:

a partition wall parting the plurality of first bus rings and the second bus ring and extending in the axial direction of the stator core,

a fitting protrusion serving as the first support portion and protruding in a first direction, from a first side of the partition wall, in a form of multiple shelves fitting with the plurality of first bus rings,

a protruding piece serving as the second support portion and protruding in a second direction opposite the first direction, from a second side of the partition wall, the protruding piece extending, from a midway portion thereof, in a third direction parallel to the partition wall and intersecting with a fourth direction in which the multiple shelves extend, thereby defining a fitting groove between the second side of the partition all and the protruding piece, the fitting groove opening toward a tip of the protruding piece and establishing a fitting engagement with the second bus ring.

5. The stator according to claim 3, further comprising a resin-made spool wound by the winding wire and insulating the stator core and the winding wire, the spool including a resin-molded engagement portion allowing engagement of the holder member from the axial direction of the stator core.

6. The stator according to claim 4, further comprising a resin-made spool wound by the winding wire and insulating the stator core and the winding wire, the spool including a resin-molded engagement portion allowing engagement of the holder member from the axial direction of the stator core.

7. A rotating machine comprising the stator according to claim 1 and a rotor disposed in a field area of the stator.

8. An automobile comprising the rotating machine according to claim 7 and a wheel capable of being driven by a drive force outputted by the rotating machine.

9. A holder for use with a stator comprising:

a partition wall;

a first support portion protruding in a first direction, from a first side of the partition wall, in a form of multiple shelves; and

a second support portion comprising a protruding piece protruding in a second direction opposite the first direction, from a second side of the partition wall, the protruding piece extending, from a midway portion thereof, in a third direction parallel to the partition wall and intersecting with a fourth direction in which the multiple shelves extend, thereby defining a fitting groove between the second side of the partition wall and the protruding piece, the fitting groove opening toward a tip of the protruding piece.

10. The holder for use with a stator according to claim 9, further comprising an engagement piece protruding in a fifth direction opposite the third direction toward which the fitting groove opens.

11. A stator for a rotary machine comprising the holder according to claim 9, wherein two or more holders are disposed along an alignment of each of U phase, V phase, and W phase winding wires being wound on a stator core, and

wherein each of the shelves of the first support portion of each holder holds U phase, V phase, and W phase bus rings each being connected to the U phase, V phase, and W phase winding wires of the corresponding phase and the fitting groove of the second support portion of each holder holds a neutral point bus ring connected to each of the U phase, V phase, and W phase winding wires.

12. A stator for a rotary machine comprising the holder according to claim 10, wherein two or more holders are disposed along an alignment of each of U phase, V phase, and W phase winding wires being wound on a stator core, and

wherein each of the shelves of the first support portion of each holder holds U phase, V phase, and W phase bus rings each being connected to the U phase, V phase, and W phase winding wires of the corresponding phase and the fitting groove of the second support portion of each holder holds a neutral point bus ring connected to each of the U phase, V phase, and W phase winding wires.