Stator module and motor

Patent metadata

Field	Value
Publication number	US-12184120-B2
Application number	US-202418409503-A
Country	US
Kind code	B2
Filing date	Jan 10, 2024
Priority date	May 31, 2018
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

A stator module is applicable to a motor. The motor comprises z slots, 2p poles, and m phases, where z, p, and m are integers. The stator module includes a stator core and a stator winding. The stator core has multiple stator slots, and the stator slots are distributed in a circumferential direction of the stator core. The stator winding includes a first-class conductor segment, a second-class conductor segment, and a third-class conductor segment. A pitch between a first in-slot portion and a second in-slot portion of the first-class conductor segment is (y−1) stator slots, a pitch between a first in-slot portion and a second in-slot portion of the second-class conductor segment is y stator slots, and a pitch between a first in-slot portion and a second in-slot portion of the third-class conductor segment is (y+1) stator slots, where y is an integer and y=z/2p.

First claim

The invention claimed is:

1. A stator module, applicable to a motor, wherein:
the motor comprises z slots, 2p poles, and m phases, wherein z, p, and m are integers; and
the stator module comprises a stator core and a stator winding, the stator core has a plurality of stator slots, the stator slots are distributed in a circumferential direction of the stator core, the stator winding includes a first-class conductor segment, a second-class conductor segment, and a third-class conductor segment, a pitch between a first in-slot portion and a second in-slot portion of the first-class conductor segment is (y−1) stator slots, a pitch between a first in-slot portion and a second in-slot portion of the second-class conductor segment is y stator slots, and a pitch between a first in-slot portion and a second in-slot portion of the third-class conductor segment is (y+1) stator slots, wherein y is an integer and y=z/2p.

2. The stator module according to claim 1 , wherein the first-class conductor segment and the third-class conductor segment are located in a first side slot layer, the second-class conductor segment is located in a second side slot layer and in a middle slot layer, the middle slot layer is located between the first side slot layer and the second side slot layer.

3. The stator module according to claim 2 , wherein the second-class conductor segment comprises an intra-layer conductor segment and an inter-layer conductor segment, a first in-slot portion and a second in-slot portion of the inter-layer conductor segment are located between two adjacent middle slot layers.

4. The stator module according to claim 3 , wherein the first in-slot portion and the second in-slot portion of the third-class conductor segment are located in the first side slot layer, an end of a third-class conductor segment and an end of an inter-layer conductor segment are connected and crossing toward a same direction.

5. The stator module according to claim 1 , wherein two welding ends of at least one second-class conductor segment are disposed close to each other and coincide in a radial direction of the stator core.

6. The stator module according to claim 1 , wherein two welding ends of the first-class conductor segment tilt in a first direction, two welding ends of the intra-layer conductor segment tilt in a second direction, and the first direction and the second direction are opposite to each other.

7. The stator module according to claim 1 , wherein each of the conductor segments includes a bent portion, and a first in-slot portion and a second in-slot portion of the conductor segment are connected to the bent portion in a first end of an axial direction of the stator module, and each of the conductor segments extends out of the stator core and forms a welding end in a second end of the axial direction, wherein the first end of the axial direction is close to the bent portion and the second end of the axial direction is away from the bent portion.

8. The stator module according to claim 7 , wherein the stator winding includes a star point line which is located on the welding end.

9. A motor, comprising a stator module, wherein:
the motor comprises z slots, 2p poles, and m phases, wherein z, p, and m are integers; and
the stator module comprises a stator core and a stator winding, the stator core has a plurality of stator slots, the stator slots are distributed in a circumferential direction of the stator core, the stator winding includes a first-class conductor segment, a second-class conductor segment, and a third-class conductor segment, a pitch between a first in-slot portion and a second in-slot portion of the first-class conductor segment is (y−1) stator slots, a pitch between a first in-slot portion and a second in-slot portion of the second-class conductor segment is y stator slots, and a pitch between a first in-slot portion and a second in-slot portion of the third-class conductor segment is (y+1) stator slots, wherein y is an integer and y=z/2p.

10. The motor according to claim 9 , wherein the first-class conductor segment and the third-class conductor segment are located in a first side slot layer, the second-class conductor segment is located in a second side slot layer and in a middle slot layer, the middle slot layer is located between the first side slot layer and the second side slot layer.

11. The motor according to claim 10 , wherein the second-class conductor segment comprises an intra-layer conductor segment and an inter-layer conductor segment, a first in-slot portion and a second in-slot portion of the inter-layer conductor segment are located between two adjacent middle slot layers.

12. The motor according to claim 11 , wherein the first in-slot portion and the second in-slot portion of the third-class conductor segment are located in the first side slot layer, an end of a third-class conductor segment and an end of an inter-layer conductor segment are connected and crossing toward a same direction.

13. The motor according to claim 10 , wherein two welding ends of the first-class conductor segment tilt in a first direction, two welding ends of the intra-layer conductor segment tilt in a second direction, and the first direction and the second direction are opposite to each other.

14. The motor according to claim 9 , wherein two welding ends of at least one second-class conductor segment are disposed close to each other and coincide in a radial direction of the stator core.

15. The motor according to claim 9 , wherein each of the conductor segments includes a bent portion, and a first in-slot portion and a second in-slot portion of the conductor segment are connected to the bent portion in a first end of an axial direction of the stator module, and each of the conductor segments extends out of the stator core and forms a welding end in a second end of the axial direction, wherein the first end of the axial direction is close to the bent portion and the second end of the axial direction is away from the bent portion.

16. The motor according to claim 15 , wherein the stator winding includes a star point line which is located on the welding end.

Assignees

• Byd Co Ltd

Inventors

• Shu Shenglang
• You Bin

Classifications

• H02K2213/03

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

• H02K3/28

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

• H02K3/12

  arranged in slots · CPC title

• H02K15/064

  Windings consisting of separate segments · CPC title

• H02K1/165 Primary

  Shape, form or location of the slots · CPC title