Stator with pins for an electric machine

Patent metadata

Field	Value
Publication number	US-11489389-B2
Application number	US-202017113740-A
Country	US
Kind code	B2
Filing date	Dec 7, 2020
Priority date	Dec 9, 2019
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

A stator for an electric machine includes a plurality of pins, which are 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 four 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 4n−3 layer, wherein n is an integer, a second pin of the winding is located in a second slot in the 4n−2 layer, wherein the second slot has a first radial 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 the 4n layer, and a fourth pin of the winding is located in the second slot in the 4n−1 layer.

First claim

The invention claimed is:

1. A stator ( 1 ) for an electric machine ( 100 ) comprising:
a plurality of pins ( 22 , 23 , 24 , 25 ), which are arranged on concentric circles at different distances to a stator center (M) in slots ( 51 - 58 , 71 - 78 , 91 - 98 ) in the stator ( 1 ), and each concentric circle forms a layer (L 1 , L 2 , L 3 , L 4 ),
wherein in each case four pins ( 22 , 23 , 24 , 25 ) in different layers (L 1 , L 2 , L 3 , L 4 ) are serially connected to one another and form a winding ( 41 ),
a first pin ( 25 ) of the winding ( 41 ) is located in a first slot ( 53 ) in the 4n−3 layer (L 1 ), wherein n is an integer,
a second pin ( 24 ) of the winding ( 41 ) is located in a second slot ( 94 ) in the 4n−2 layer (L 2 ), wherein the second slot ( 94 ) has a first radial distance ( 13 ) to the first slot ( 53 ) in a first circumferential direction of the stator ( 1 ),
a third pin ( 23 ) of the winding ( 41 ) is located in the first slot ( 53 ) in the 4n layer (L 4 ),
a fourth pin ( 22 ) of the winding ( 41 ) is located in the second slot ( 94 ) in the 4n−1 layer (L 3 ).

2. The stator ( 1 ) according to claim 1 , wherein the stator ( 1 ) has a first end face ( 7 ) and a second end face ( 9 ); and
the first pin ( 25 ) and the second pin ( 24 ) are connected to one another on the second end face ( 9 ) by means of a first connection type ( 61 );
the second pin ( 24 ) and the third pin ( 23 ) are connected to one another on the first end face ( 7 ) by means of a second connection type ( 62 );
the third pin ( 23 ) and the fourth pin ( 22 ) are connected to one another on the second end face ( 9 ) by means of a third connection type ( 63 );
wherein the first, second, and third connection types differ from one another.

3. The stator ( 1 ) according to claim 1 , wherein the stator ( 1 ) has at least two windings ( 41 , 42 , 43 ) and at least the fourth pin ( 22 ) in the second slot ( 94 ) is connected to a fifth pin ( 26 ) in the 4n−3 layer (L 3 ) in a fifth slot ( 55 ) by means of a fourth connection type ( 64 ).

4. Stator ( 1 ) according to claim 3 , wherein a a second distance ( 19 ) that is greater than the first radial distance ( 13 ), wherein the second distance lies between second slot ( 94 ) and third slot ( 55 ).

5. The stator ( 1 ) according to claim 3 , wherein the stator ( 1 ) has a plurality of windings ( 41 , 42 ), which extend across the entire circumference of the stator ( 1 ) and thereby form a partial coil.

6. The stator ( 1 ) according to claim 5 , wherein one pin ( 28 , 28 a , 31 , 31 a ) in each case from two partial coils are connected to one another by means of a fifth connection type ( 65 ) or a sixth connection type ( 66 ) and form a coil ( 201 , 202 ).

7. The stator ( 1 ) according to claim 6 , wherein four pins of a coil completely occupy four slots ( 92 , 94 , 96 , 98 ).

8. The stator ( 1 ) according to claim 7 , wherein the partial coils form six coils, and these are assigned to three phases in such a way that in each case two coils, which are assigned to a same phase, are located in three adjacent slots ( 51 - 58 , 71 - 78 , 91 - 98 ) and thereby in each case two different layers of the two outer slots ( 71 - 78 , 91 - 98 ) are occupied by pins from other phases.

9. The stator ( 1 ) according to claim 8 , wherein in each case one output ( 81 , 87 , 101 , 107 , 111 , 117 ) and one output ( 83 , 103 , 113 , 85 , 105 , 115 ) of the at least two coils ( 201 , 202 ) are connected to one another, and the two coils ( 201 , 202 ) are thus switched in parallel, and, in particular, are assigned to one phase.

10. A vehicle ( 403 ) with an electric machine ( 401 ) with a stator ( 1 ) according to claim 1 .

Assignees

• Valeo Siemens Eautomotive Germany Gmbh

Inventors

• Dotz Boris

Classifications

• H02K15/062

  Windings in slots; Salient pole windings · 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

• H02K2213/03

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

• H02K3/12 Primary

  arranged in slots · CPC title

• H02K3/505

  for large machine windings, e.g. bar windings (H02K3/51 takes precedence) · CPC title