Stator with pins for an electric machine

Patent metadata

Field	Value
Publication number	US-11489388-B2
Application number	US-202017101475-A
Country	US
Kind code	B2
Filing date	Nov 23, 2020
Priority date	Nov 26, 2019
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

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, 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−1 layer, wherein n is an integer. A second pin of the winding is located in a second slot in the 4n 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 a third slot in the 4n−2 layer, wherein the third slot lies adjacent to the first slot. A fourth pin of the winding is located in a fourth slot in the 4n−3 layer.

First claim

The invention claimed is:

1. A stator ( 1 ) for an electric machine ( 100 ) comprising:
a plurality of pins ( 21 , 22 , 23 , 24 , 25 ), which are arranged on concentric circles at different distances to a stator center (M) in slots ( 51 - 58 , 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 ( 21 , 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 ( 21 ) of the winding ( 41 ) is located in a first slot ( 51 ) in the 4n−1 layer (L 3 ), wherein n is an integer,
a second pin ( 22 ) of the winding ( 41 ) is located in a second slot ( 58 ) in the 4n layer (L 4 ), wherein the second slot ( 58 ) has a first radial distance ( 11 ) to the first slot ( 51 ) in a first circumferential direction of the stator ( 1 ),
a third pin ( 23 ) of the winding ( 41 ) is located in a third slot ( 91 ) in the 4n−2 layer (L 2 ), wherein the third slot ( 91 ) lies adjacent to the first slot ( 51 ),
a fourth pin ( 24 ) of the winding ( 41 ) is located in a fourth slot ( 98 ) in the 4n−3 layer (L 1 ), wherein the fourth slot ( 98 ) lies adjacent to the second slot ( 58 ).

2. The stator ( 1 ) according to claim 1 , wherein the third and fourth slots ( 91 , 98 ) preferably lie on a same adjacent side of the first and second slots ( 51 , 58 ) in the circumferential direction.

3. The stator ( 1 ) according to claim 1 , wherein
the first radial distance ( 11 ) lies between the first slot ( 51 ) and the second slot ( 58 ) and also between the third slot ( 91 ) and the fourth slot ( 98 ),
a second distance ( 13 ) lies between the third slot ( 91 ) and the second slot ( 58 ), wherein the second distance ( 13 ) is smaller than.

4. 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 ( 21 ) and the second pin ( 22 ) are connected to one another on the second end face ( 9 ) by means of a first connection type ( 61 );
the second pin ( 22 ) 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 ( 24 ) 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.

5. 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 ( 24 ) in the fourth slot ( 98 , 96 , 94 ) is connected to a fifth pin ( 25 ) in the 4n−1 layer (L 3 ) in a fifth slot ( 57 ) by means of a fourth connection type ( 64 ).

6. The stator ( 1 ) according to claim 5 , 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.

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

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 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 one input ( 81 , 101 , 111 , 87 , 107 , 117 ) from at least two coils ( 201 , 202 ) are connected to one another by means of a seventh connection type.

10. The stator ( 1 ) according to claim 9 , wherein in each case one output ( 83 , 103 , 113 , 85 , 105 , 115 ) from 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.

11. 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

• 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

• B60K1/00

  Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) · CPC title

• H02K1/12

  Stationary parts of the magnetic circuit · CPC title