Stator with pins and a parallel connection for an electric machine
A stator for an electric machine has a plurality of pins, which are arranged on concentric circles at different distances from a stator center point in slots and each concentric circle forms a layer, wherein four pins in different layers are respectively connected to one another in series and form a winding, a first pin of the winding is located in a first slot in the 4n−1 layer, wherein n is a natural number, a second pin of the winding is located in a second slot in the 4n layer, wherein the second slot is at a first radial distance from the first slot in a first circumferential direction of the stator, a third pin of the winding is located in the first slot in the 4n−3 layer, a fourth pin of the winding is located in the second slot in the 4n−3 layer.
1. A stator for an electric machine, comprising:
a plurality of pins arranged on concentric circles at different distances from a stator center point in slots wherein each concentric circle forms a layer,
wherein four pins in different layers are respectively connected to one another in series and form a winding,
a first pin of the winding is located in a first slot in a 4n−1 layer, wherein n is a natural number,
a second pin of the winding is located in a second slot in a 4n layer, wherein the second slot is at a first radial distance from 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 4n−2 layer, and
a fourth pin of the winding is located in the second slot in a 4n−3 layer.
2. The stator according to claim 1 , further comprising:
a first end face and a second end face,
wherein the first pin and the second pin are connected to one another on the second end face by means of a first type of connection,
the second pin and the third pin are connected to one another on the first end face by means of a second type of connection,
the third pin and the fourth pin are connected to one another on the second end face by means of a third type of connection,
wherein the first, second and third types of connection differ from one another.
3. The stator according to claim 2 ,
wherein the first type of connection is formed by a welded connection between a first weld point at a first pin foot and a second weld point at a second pin foot,
wherein the first pin foot is a pin foot of a second double pin or a pin foot of a first single pin, or a pin foot of a third double pin, and
wherein the second pin foot is a pin foot of a first double pin or a pin foot of a fourth double pin, or a pin foot of a fourth single pin.
4. The stator according to claim 2 ,
wherein the third type of connection is formed by a welded connection between a third weld point at a third pin foot and a fourth weld point at a fourth pin foot,
wherein the third pin foot is a pin foot of a second double pin or a pin foot of a third double pin, or a pin foot of a second single pin, and
wherein the fourth pin foot is a pin foot of a first double pin or a pin foot of a fourth double pin, or a pin foot of a third single pin.
5. The stator according to claim 1 , wherein the stator has at least two windings and at least the fourth pin in the second slot is connected to a fifth pin in the 4n−1 layer in a third slot by means of a fourth type of connection.
6. The stator according to claim 5 , further comprising: a plurality of windings, which extend over the entire circumference of the stator and thereby form a part-coil.
7. The stator according to claim 6 , wherein respective pins of two part-coils are connected to one another by means of a fifth type of connection.
8. The stator according to claim 7 , wherein at least two part-coils form a coil.
9. The stator according to claim 8 , wherein the part-coils form six coils and six phases are assigned to them in such a way that two coils, which are assigned to different phases, are respectively located in adjacent slots.
10. The stator according to claim 8 , wherein respective inputs of a pin of two coils are connected to one another by means of a sixth type of connection.
11. The stator according to claim 10 , wherein respective outputs of a pin of the two coils are connected to one another and the two coils as a result are connected in parallel, and assigned to one phase.
12. The stator according to claim 1 , wherein the second type of connection 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 a respective weld point and bridges a first radial distance.
13. The stator according to claim 1 , wherein the fourth type of connection comprises a second double pin, which is formed from the fourth pin and the fifth pin, wherein the second double pin has two outwardly bent pin feet with a respective weld point and bridges a first radial distance.
14. The stator according to claim 1 , wherein the fifth type of connection comprises a third double pin, which is formed from a second end pin and a third end pin, wherein the third double pin has two outwardly bent pin feet with a respective weld point and bridges a second radial distance.
15. The stator according to claim 1 , wherein a seventh type of connection comprises a fourth double pin, which is formed from a sixth end pin and a seventh end pin, wherein the fourth double pin has two inwardly bent pin feet with a respective weld point and bridges a second radial distance.
16. The stator according to claim 1 , wherein a single pin comprises a fourth end pin or a fifth end pin and has a pin foot which is bent clockwise and has a weld point.
17. The stator according to claim 1 , wherein a single pin comprises a first end pin or an eighth end pin and has a pin foot which is bent counterclockwise and has a weld point.
18. A vehicle having an electric machine with a stator according to claim 1 .