Stator with offset pins for an electric machine

Patent metadata

Field	Value
Publication number	US-11764628-B2
Application number	US-202017123490-A
Country	US
Kind code	B2
Filing date	Dec 16, 2020
Priority date	Dec 20, 2019
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A stator for an electric machine includes a plurality of pins arranged on concentric circles at different distances to a stator center in slots in the stator, and each concentric circle forms a layer. In each case, six pins in different layers are serially connected to one another and form a winding. A first pin of the winding is located in a first slot in the 6n-1 layer, wherein n is an integer. A second pin of the winding is located in a second slot in the 6n layer. A third pin of the winding is located in the first slot in the 6n-2 layer. A fourth pin of the winding is located in the second slot in the 6n-3 layer. A fifth pin is located in the first slot in the 6n-5 layer. A sixth pin of the winding is located in the second slot in the 6n-4 layer.

First claim

The invention claimed is:

1. A stator for an electric machine comprising:
a plurality of pins, which are arranged on concentric circles at different distances to a stator center in slots in the stator, the concentric circles forming different layers from outwards to inwards, the layers being numbered in an ascending order from an outside inward to the stator center; and
a winding,
wherein six pins are arranged in the different layers and are serially connected to one another to form the winding,
a first pin of the winding is located in a first slot in a 6n-1 layer, wherein n is an integer;
a second pin of the winding is located in a second slot in a 6n layer, wherein a second slot has a first circumferential distance to the first slot in a first circumferential direction of the stator;
a third pin of the winding is located in the first slot in a 6n-2 layer;
a fourth pin of the winding is located in the second slot in a 6n-3 layer;
a fifth pin of the winding is located in the first slot in a 6n-5 layer; and
a sixth pin of the winding is located in the second slot in a 6n-4 layer.

2. The stator according to claim 1 , wherein the stator has a first end face and a second end face; and
the first pin and the second pin are connected to one another on the second end face by means of a first connection type;
the second pin and the third pin are connected to one another on the first end face by means of a second connection type;
the third pin and the fourth pin are connected to one another on the second end face by means of a third connection type;
the fourth pin and the fifth pin are connected to one another on the first end face by means of a fourth connection type;
the fifth pin and the sixth pin are connected to one another on the second end face by means of a fifth connection type;
wherein the first, second, third, fourth, and fifth connection types differ from one another.

3. The stator according to claim 2 , wherein the second connection type comprises a first double pin, which is formed from the second pin and the third pin, wherein the first double pin has two inwardly-bent pin feet with weld points, and bridges first radial distance.

4. The stator according to claim 2 , wherein the fourth connection type comprises a second double pin, which is formed from the fourth pin and the fifth pin wherein the second double pin has two inwardly-bent pin feet with weld points, and bridges first radial distance.

5. The stator according to claim 2 , wherein the sixth connection type comprises a third double pin, which is formed from the sixth pin and a seventh or ninth pin, wherein the third double pin has two outwardly-bent pin feet with weld points, and bridges first radial distance.

6. The stator according to claim 2 , wherein the first connection type is formed by a weld connection of a first weld point on a pin foot of a third double pin or of a fourth double pin or of a first single pin to a second weld point on a pin foot of a first double pin or of a fifth double pin or of a third single pin.

7. The stator according to claim 2 , wherein the third connection type is formed by a weld connection of a third weld point on a pin foot of a first double pin or of a fifth double pin to a fourth weld point on a pin foot of a second double pin.

8. The stator according to claim 2 , wherein the fifth connection type is formed by a weld connection of a fifth weld point on a pin foot of a second double pin to a sixth weld point on a pin foot of a third double pin or of a fourth double pin or of a second single pin.

9. The stator according to claim 1 , wherein the stator has at least two windings and at least the sixth pin in the second slot is connected to a seventh pin in the 6n-1 layer in a third slot by means of a sixth connection type.

10. The stator according to claim 9 , wherein a same first distance lies between the third slot and the second slot as lies between the second slot and the first slot.

11. The stator according to claim 9 , wherein the stator has a plurality of windings, which extend across an entire circumference of the stator and thereby form a partial coil.

12. The stator according to claim 11 , wherein one pin from three partial coils is connected to one another by means of a seventh connection type or an eighth connection type and forms a coil.

13. The stator according to claim 12 , wherein inputs of end pins from two coils are connected to one another by means of a ninth connection type.

14. The stator according to claim 12 , wherein the seventh connection type comprises a fourth double pin, which is formed from a second or fourth end pin and a third or fifth end pin, wherein the fourth double pin has two outwardly-bent pin feet with weld points, and bridges second radial distance.

15. The stator according to claim 12 , wherein the eighth connection type comprises a fifth double pin, which is formed from an eighth or tenth end pin and a ninth or eleventh end pin, wherein the fifth double pin has two inwardly-bent pin feet with weld points in each case, and bridges second radial distance.

16. The stator according to claim 1 , wherein a first single pin comprises a first end pin and has a pin foot bent in a clockwise direction with a weld point.

17. The stator according to claim 1 , wherein a second single pin comprises a sixth end pin and has a pin foot bent in a counterclockwise direction with a weld point.

18. The stator according to claim 1 , wherein a third single pin comprises a seventh end pin and has a pin foot bent in a counterclockwise direction with a weld point.

19. The stator according to claim 1 , wherein a fourth single pin comprises a twelfth end pin and has a pin foot bent in a clockwise direction with a weld point.

20. A vehicle with an electric machine with the stator according to claim 1 .

21. A stator for an electric machine comprising:
a plurality of pins, which are arranged on concentric circles at different distances to a stator center in slots in the stator, the concentric circles forming different layers from outwards to inwards; and
a winding,
wherein six pins are arranged in the different layers and are serially connected to one another to form the winding,
a first pin of the winding is located in a first slot in a 6n-1 layer, wherein n is an integer;
a second pin of the winding is located in a second slot in a 6n layer, wherein a second slot has a first circumferential distance to the first slot in a first circumferential direction of the stator;
a third pin of the winding is located in the first slot in a 6n-2 layer;
a fourth pin of the winding is located in the second slot in a 6n-3 layer;
a fifth pin of the winding is located in the first slot in a 6n-5 layer; and
a sixth pin of the winding is located in the second slot in a 6n-4 layer,
wherein the stator has at least two windings and at least the sixth pin in the second slot is connected to a seventh pin in the 6n-1 layer in a third slot by means of a sixth connection type,
wherein the stator has a plurality of windings, which extend across an entire circumference of the stator and thereby form a partial coil,
wherein one pin from three partial coils is connected to one another by means of a seventh connection type or an eighth connection type and forms a coil, and
wherein the partial coils form six coils, and these are assigned to three phases in such a way that in each case the pins from two coils, which are assigned to a same phase, and are located in three adjacent slots.

Assignees

• Valeo Siemens Eautomotive Germany Gmbh

Inventors

• Dotz Boris
• Finger-Albert Christian

Classifications

• H02K3/14 Primary

  with transposed conductors, e.g. twisted conductors · CPC title

• 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

• H02K3/12 Primary

  arranged in slots · CPC title

• H02K2213/03

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

• H02K1/16

  Stator cores with slots for windings · CPC title