CN211351845U - Stator for an electric machine - Google Patents
Stator for an electric machine Download PDFInfo
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- CN211351845U CN211351845U CN201921742501.1U CN201921742501U CN211351845U CN 211351845 U CN211351845 U CN 211351845U CN 201921742501 U CN201921742501 U CN 201921742501U CN 211351845 U CN211351845 U CN 211351845U
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- 238000004804 winding Methods 0.000 claims abstract description 38
- 239000004020 conductor Substances 0.000 claims description 50
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The utility model relates to a stator (9) for electric machine, especially for motor, this stator has: a stator core (3) comprising a plurality of stator slots (4) arranged in a manner extending in an axial direction (a) parallel to a stator axis (S), wherein a first half-layer (41) of a first half-layer pair (51) at a winding head (5) is interrupted between a first contact point (K1) of the first half-layer (41) of the first half-layer pair (51) and a second contact point (K2) of the first half-layer (41) of the first half-layer pair, wherein the first contact point (K1) and the first half-layer (43) of a second half-layer pair are electrically interconnected.
Description
Technical Field
The utility model relates to a stator for electric machine, especially for motor, this stator has: a stator core including a plurality of stator slots arranged in a manner extending in an axial direction parallel to a stator axis; and a bar winding arranged in the stator slots, the bar winding being formed of conductor segments, wherein the conductor segments are arranged in the stator slots in planes corresponding to different distances from the stator axis, wherein the interconnected conductor segments form half-layers (loblages).
Background
Such rod windings for stators are also referred to as molded part windings and are formed from a plurality of prefabricated conductor segments which are introduced into the stator slots and subsequently interconnected to form the rod windings. The cross-section of these conductor segments is usually adapted to the cross-section of the stator slots extending in the axial direction, so that a high slot filling factor can be achieved. The stator slots are transversely cut at the end sides of the stator core. The conductor segments have conductor segment ends which project at the end sides and are connected to one another. The ends of the interconnected conductor sections form what are known as winding heads, which can be constructed relatively compactly.
In the stator slots of such stators, a plurality of conductor segments are usually arranged, which each have a different distance from the stator axis, i.e. are layered in a plurality of planes in the radial direction. The conductor segments are typically interconnected as sub-lines forming a closed loop around the stator.
Instead of simply being arranged as parallel planes in the stator slots, these partial lines are interleaved into a plurality of half-layers, which saves space just at the welding points and the bending points in the winding head and makes it possible to achieve a non-overlapping mutual stretching of the half-layers. The interleaving results in half layers extending around the stator in a zigzag pattern and exchanging planes with each other from a passing stator slot to the next passing stator slot.
The sub-lines are exposed to completely different electromagnetic conditions in different planes. For example, a plane close to the stator axis is exposed to a larger extent to the fringe field of the rotor of the electrodynamic machine than a plane further away from the stator axis. Furthermore, the inductance of the conductor segments in a plane close to the stator axis is different from the inductance in a plane further away from the stator axis.
This usually requires a plurality of sub-lines to be connected in parallel, so that predefined voltage and/or current conditions can be achieved. However, due to this parallel connection, a different current distribution and/or an oscillating loop current is caused in the individual sub-lines, which in turn leads to undesired losses in the electric machine.
SUMMERY OF THE UTILITY MODEL
Against this background, the following objective is proposed: a stator for an electric machine with reduced losses is proposed.
In order to achieve this object, a stator for an electrical machine, in particular for an electric motor, is proposed, which stator has: a stator core including a plurality of stator slots arranged in a manner extending in an axial direction parallel to a stator axis; and a bar winding arranged in the stator slots, the bar winding being formed of conductor segments, wherein the conductor segments are arranged in planes in the stator slots, the planes corresponding to different distances from the stator axis; the interconnected conductor segments form half-layers, wherein a first half-layer and a second half-layer of a first half-layer pair are arranged in two adjacent planes in a first stator slot extending in the axial direction, wherein the first half-layer of the first half-layer pair is guided at a first end side by means of a first connection from the first stator slot in the winding head into a second stator slot, and the first half-layer and the second half-layer of the first half-layer pair are arranged in the two adjacent planes in the second stator slot extending in the axial direction, such that the assignment of the half-layers to the planes of the second stator slot is interchanged compared to the first stator slot; wherein a first half-layer and a second half-layer of a second half-layer pair are arranged in the first stator slot in a manner extending in the axial direction in two further adjacent planes, wherein the first half-layer of the second half-layer pair is guided at the first end side from the first stator slot into the second stator slot by means of a second connection, and the first half-layer and the second half-layer of the second half-layer pair are arranged in the two further adjacent planes in the second stator slot in a manner extending in the axial direction, such that the assignment of the half-layers to the planes of the second stator slot is interchanged compared to the first stator slot.
According to the utility model provides a: the first half-layer of the first half-layer pair at the winding head is interrupted between a first contact point of the first half-layer pair and a second contact point of the first half-layer pair, wherein the first contact point and the first half-layer of the second half-layer pair are electrically connected to each other.
By connecting the first half-layer of the first half-layer pair with the first half-layer of the second half-layer pair, compensation for different electromagnetic conditions is advantageously achieved at the first half-layer of the first half-layer pair and at the first half-layer of the second half-layer pair.
Preferably, the first contact location and the second contact location are arranged in an apex of the first half-layer pair. It is conceivable that: the first half-layer of the first half-layer pair is bent towards the first half-layer of the second half-layer pair in the region of the first contact location.
The invention is based on the object of providing a device for carrying out the method according to the invention.
According to a preferred embodiment of the present invention, it is provided that: the second contact site has means for electrically connecting the stator. This is particularly advantageous because the second contact point is not connected to the first contact point, and therefore there is sufficient structural space for arranging the means for electrically connecting the stator on the second contact point.
According to another preferred embodiment of the present invention, it is provided that: the second contact portion is connected to the second half layer of the first half layer pair. This results in an electrical connection between directly adjacent half-layers, which contributes to a further homogenization of the electromagnetic properties of the half-layers of the stator.
According to another preferred embodiment of the present invention, it is provided that: the second contact portion is connected with the second half layer of the first half layer pair by the auxiliary buckle. For this purpose, the auxiliary snap is preferably a snap, for example for connecting conductor segments of a sub-circuit in a winding head. This saves costs and expenditure in the production of the stator. It is conceivable that: the auxiliary snap-fit connection is welded to the second contact point and/or to the second half-layer of the first half-layer pair or pressed against the second contact point and/or the second half-layer of the first half-layer pair.
According to another preferred embodiment of the present invention, it is provided that: the auxiliary snap is arranged on the outside of the winding head facing the stator axis or on the outside of the winding head facing away from the stator axis. This enables a construction space neutral (bauraumnneutral) embodiment of the stator according to the invention.
According to another preferred embodiment of the present invention, it is provided that: the first end face is the side of the stator at which the conductor segments are welded to one another. This can be achieved: in the case of welding conductor sections, a connection is established between the first contact point and the first half-layer of the second half-layer pair. Thus, the step for establishing a connection between the first contact location and the first half-layer of the second half-layer pair can be integrated into another production step of the stator according to the invention.
Therefore, the following steps are proposed: the first contact location is welded to the first half-layer of the second half-layer pair.
According to another preferred embodiment of the present invention, it is provided that: the stator has two or more, in particular three, stator slots per pole, so that for each pole a group of holes is formed with a first slot position, a last slot position and optionally slot positions in between, wherein at the first end side of the stator core a connection is provided so that the first slot position of a first pole is connected with the last slot position of a second pole following the first pole.
By such a transformation of slot position within a group of holes, a sub-circuit comprising a plurality of slot positions may be formed. Since the poles of the rotor of the electric machine successively cover the slot positions of the hole groups, i.e. with a certain phase shift, the corresponding induced voltages are phase shifted. Now, by connecting different slot locations within the group of holes, the same current is forced to be directed through these slot locations in the sub-line, thereby counteracting the ring current that generates the oscillations and the losses.
In this connection, it has proven advantageous: another second connection is provided on the end side of the stator core in such a way that the second slot position of the first pole is connected with the first slot position of the second pole and the third slot position of the first pole is connected with the second slot position of the second pole. With such a design, a wiring diagram for a group of holes having three slot positions (i.e., a number of holes equal to three) can be provided, where all slot positions are traversed by the same sub-line. The risk of losses can thereby be reduced again.
Another subject matter of the invention is an electric machine having a rotor and a stator as described above.
The same advantages as already described in connection with the stator according to the invention can be achieved in an electric machine preferably designed as an electric motor.
In general, the present invention herein discloses the following embodiments 1 and 9, with the following 2-8 being preferred embodiments:
1. a stator (9) for an electrical machine, in particular for an electric motor, having:
a stator core (3) comprising a plurality of stator slots (4) arranged in a manner extending in an axial direction (A) parallel to a stator axis (S); and
a bar winding (10) arranged in the stator slots (4), the bar winding being formed by a plurality of conductor segments (1),
wherein the conductor segments (1) are arranged in planes in the stator slots (4), the planes corresponding to different distances from the stator axis (S);
wherein the interconnected conductor sections (1) form a half-layer,
wherein a first half layer and a second half layer (41, 42) of a first half layer pair are arranged in two adjacent planes in a first stator slot extending in an axial direction (a), wherein the first half layer (41) of the first half layer pair is guided at a first end side (15) by means of a first connection from the first stator slot in the winding head (5) into a second stator slot, and the first half layer and the second half layer (41, 42) of the first half layer pair are arranged in the two adjacent planes in the second stator slot extending in the axial direction (a) such that the assignment of the half layers (41, 42) to the planes of the second stator slot is interchanged compared to the first stator slot;
wherein a first half-layer (43) and a second half-layer of a second half-layer pair are arranged in the first stator slot in two further adjacent planes extending in the axial direction (A), wherein the first half-layer (43) of the second half-layer pair is guided at the first end side (15) from the first stator slot into the second stator slot by means of a second connection, and the first half-layer and the second half-layer of the second half-layer pair are arranged in the second stator slot in the two further adjacent planes extending in the axial direction (A), such that the assignment of the half-layers to the planes of the second stator slot is interchanged compared to the first stator slot;
it is characterized in that the preparation method is characterized in that,
the first half-layer (41) of the first half-layer pair (51) at the winding head (5) is interrupted between a first contact point (K1) of the first half-layer (41) of the first half-layer pair (51) and a second contact point (K2) of the first half-layer (41) of the first half-layer pair, wherein the first contact point (K1) and the first half-layer (43) of the second half-layer pair are electrically connected to one another.
2. Stator (9) according to the preceding 1, characterized in that the second contact point (K2) has means for electrically connecting the stator.
3. Stator (9) according to one of the preceding claims 1-2, characterized in that the second contact point (K2) is connected to the second half layer (42) of the first half layer pair.
4. The stator (9) according to the preceding 3, characterized in that the second contact point (K2) is connected with the second half layer (42) of the first half layer pair by means of an auxiliary snap (8).
5. Stator (9) according to the preceding 4, characterized in that the auxiliary snap (8) is arranged on the outside of the winding head (5) facing towards the stator axis (S) or on the outside of the winding head (5) facing away from the stator axis (S).
6. Stator (9) according to one of the preceding claims 1 to 5, characterized in that the first end side (15) is the side of the stator (9) where the conductor segments (1) are welded to each other.
7. Stator (9) according to one of the preceding claims 1 to 6, characterized in that the first contact point (K1) is welded to the first half layer (43) of the second half layer pair.
8. A stator (9) according to one of the preceding claims 1-7, characterized in that the stator (9) has two or more, in particular three, stator slots (4) per pole, so that for each pole a group of holes (L) is formed having a first slot position, a last slot position and optionally a slot position in between, wherein at a first end side (15) of the stator core (3) a further connection is provided, so that the first slot position of a first pole is connected with the last slot position of a second pole following the first pole.
9. An electric machine, characterized in that it has a rotor and a stator (9) according to one of the preceding claims 1-8.
Drawings
Further details, features and advantages of the invention will emerge from the figures and the following description of a preferred embodiment with the aid of the figures. The drawings herein show only exemplary embodiments of the invention and are not intended to limit the inventive concepts.
Fig. 1 schematically shows a conductor section of a bar winding according to an exemplary embodiment of the invention in a side view.
FIG. 2 schematically shows a circuit diagram for illustrating delta connection of a three-phase electric machine.
Fig. 3 schematically shows a stator according to an exemplary embodiment of the invention.
Fig. 4 schematically shows in a cross-sectional view a region of the stator core of the stator in fig. 3 according to an exemplary embodiment of the invention.
Fig. 5 schematically shows a region of a stator according to an exemplary embodiment of the present invention.
Fig. 6 schematically shows a region of a stator according to an exemplary embodiment of the present invention.
Detailed Description
Fig. 1 shows an exemplary embodiment of a conductor section 1 which can be used to form a bar winding 10 (see fig. 3). The conductor segment 1 has a substantially rectangular cross section and is designed in a U-shape. Such conductor sections 1 are also called hair cards (english: Hairpin) because of their shape. The conductor segment 1 is preferably formed of copper or aluminum or a copper-aluminum alloy, whereby good electrical characteristics can be achieved.
In the production of the stator 9 (see fig. 3) of the electrical machine, the U-shaped conductor segments 1 (as they are shown in fig. 1) can be inserted into the stator slots 4 (see fig. 3) from the end side (see fig. 3) of the stator core 3 (see fig. 3). After the conductor section 1 has been inserted into the stator slot 4, the open conductor section end 2 of the conductor section 1, which projects at the end face of the stator core 3, can be bent in order to connect it to a further conductor section 1. A bar winding 10 of the stator is formed by connecting a plurality of such conductor segments 1.
According to a variant of the embodiment shown in fig. 1, the conductor section 1 can be designed in a V-shape. It is further alternatively possible to use a plurality of straight conductor segments 1 or a combination of straight conductor segments 1 and U-shaped and/or V-shaped conductor segments 2.
A delta connection of a three-phase electric machine according to a first embodiment is shown in fig. 2, wherein four parallel lines and six series lines are provided for each phase. The line is accordingly formed by a complete 360 ° loop around the electric machine, i.e. by all pole pairs. According to the first embodiment, the number of pole pairs is four. The phase interface is indicated with reference numeral 11.
A perspective view of a stator 9 according to a first embodiment is shown in fig. 3. The stator 9 is suitable for internal rotor machines and comprises a hollow cylindrical stator core 3 having a stator axis S and a plurality of stator slots 4 arranged parallel to the stator axis S and extending in the axial direction a. In this regard, the axial direction a is the groove longitudinal direction, while the direction of the groove depth is denoted as the radial direction R. Preferably, the stator core 3 is designed as a lamination stack. In the stator slots 4, windings are provided which are designed as bar windings 10 made of prefabricated conductor segments 1 (see fig. 1). The conductor segments 1 are each introduced with their free conductor segment ends 2.1 into the stator slots 4 in such a way that a closed connection region connecting the free conductor segment ends 2 is arranged on the second end side 16 of the stator core 3. The closed connection region projects from the stator slot 4 at the second end side 16 and forms a further winding head 6. The free conductor segment end 2.1 projects from the stator slot 4 on a first end side 15 opposite a second end side 16 and forms the winding head 5. Here, these sides of the stator core 3 are indicated as end sides 15, 16, at which the stator slots 4 are transversely cut.
As can be seen from the illustration of fig. 4, in the first embodiment every three stator slots 4 adjacent in the circumferential direction U form a hole group L, i.e. a group of stator slots 4 forming poles of the same phase. The conductor segments 1 are arranged in eight different planes within each stator slot 4, layered in the radial direction R, i.e. having different distances from the stator axis S. Thus, a total of 3 × 8 to 24 possibilities are obtained for each group of holes L for the arrangement of conductor segments 1. Thus, the arrangement of the conductor segments 1 is determined by two degrees of freedom: on the one hand the plane in the stator slots 4 and on the other hand the slot position in the group of holes L.
In order not to generate undesirable loop currents, it is desirable to: the parallel-connected cells, each having six series-connected lines, have the same electromagnetic properties at every point in time. This means that the cells should have as equal resistance as possible. It is furthermore desirable that the units have as identical an inductance as possible, so that as identical an alternating impedance as possible is obtained for the relevant frequency range of 0Hz to 2kHz, preferably 0Hz to 50kHz, particularly preferably 0Hz to 150 kHz. Finally, at each point in time, the same voltage induced by the rotor should be present, so that as far as possible no loop current is generated.
In the stator 9 according to the first embodiment, the bar winding 10 is arranged with a winding pattern in which the individual wires 7 connected in series in each unit use all planes in the stator slots 4 and all slot positions in the hole group L, respectively. In this way all the different electromagnetic and thermal conditions of the respective planes and slot positions can be included into the total impedance of the respective line 7. The series connection of the conductor segments 1 in different planes and slot positions forces the current through these conductor segments 1 to be the same.
Fig. 5 schematically shows a region of the stator 9 according to an exemplary embodiment of the invention. The winding heads 5 are shown viewed parallel to the stator slots 4 in the stator core 3 in the axial direction. It can be seen that the first contact location K1 is at the first half of the first half layer pair. The first contact site K1 is electrically connected to the first half layer 43 of the second half layer pair. The second contact point K2 serves for electrically connecting the stator 9.
Fig. 6 schematically shows a region of a stator 9 according to another exemplary embodiment of the invention. Here, it is shown that the winding heads 5 of the stator 9 are viewed essentially orthogonally to the stator slots 4 in the stator core 3 in the radial direction. Visible in the front part is an auxiliary snap 8 which electrically connects the second half-layer 42 of the first half-layer pair with the first half-layer 41 (not visible) of the first half-layer pair.
Claims (11)
1. A stator (9) for an electric machine, the stator having:
a stator core (3) comprising a plurality of stator slots (4) arranged in a manner extending in an axial direction (A) parallel to a stator axis (S); and
a bar winding (10) arranged in the stator slots (4), the bar winding being formed by a plurality of conductor segments (1),
wherein the conductor segments (1) are arranged in planes in the stator slots (4), the planes corresponding to different distances from the stator axis (S);
wherein the interconnected conductor sections (1) form a half-layer,
wherein a first half layer and a second half layer (41, 42) of a first half layer pair are arranged in two adjacent planes in a first stator slot extending in an axial direction (a), wherein the first half layer (41) of the first half layer pair is guided at a first end side (15) by means of a first connection from the first stator slot in the winding head (5) into a second stator slot, and the first half layer and the second half layer (41, 42) of the first half layer pair are arranged in the two adjacent planes in the second stator slot extending in the axial direction (a) such that the assignment of the half layers (41, 42) to the planes of the second stator slot is interchanged compared to the first stator slot;
wherein a first half-layer (43) and a second half-layer of a second half-layer pair are arranged in the first stator slot in two further adjacent planes extending in the axial direction (A), wherein the first half-layer (43) of the second half-layer pair is guided at the first end side (15) from the first stator slot into the second stator slot by means of a second connection, and the first half-layer and the second half-layer of the second half-layer pair are arranged in the second stator slot in the two further adjacent planes extending in the axial direction (A), such that the assignment of the half-layers to the planes of the second stator slot is interchanged compared to the first stator slot;
it is characterized in that the preparation method is characterized in that,
the first half-layer (41) of the first half-layer pair (51) at the winding head (5) is interrupted between a first contact point (K1) of the first half-layer (41) of the first half-layer pair (51) and a second contact point (K2) of the first half-layer (41) of the first half-layer pair, wherein the first contact point (K1) and the first half-layer (43) of the second half-layer pair are electrically connected to one another.
2. A stator (9) according to claim 1, characterized in that the second contact point (K2) has means for electrically connecting the stator.
3. Stator (9) according to claim 1 or 2, characterized in that the second contact point (K2) is connected with the second half layer (42) of the first half layer pair.
4. A stator (9) according to claim 3, characterized in that the second contact portion (K2) is connected with the second half layer (42) of the first half layer pair by means of an auxiliary snap (8).
5. Stator (9) according to claim 4, characterized in that the auxiliary snap (8) is arranged on the outside of the winding head (5) facing towards the stator axis (S) or on the outside of the winding head (5) facing away from the stator axis (S).
6. A stator (9) according to claim 1 or 2, characterized in that the first end side (15) is the side of the stator (9) where the conductor segments (1) are welded to each other.
7. Stator (9) according to claim 1 or 2, characterized in that the first contact point (K1) is welded with the first half-layer (43) of the second half-layer pair.
8. A stator (9) according to claim 1 or 2, characterized in that the stator (9) has two or more stator slots (4) per pole, such that for each pole a group of holes (L) is formed having a first slot position, a last slot position, wherein at the first end side (15) of the stator core (3) a further connection is provided, such that the first slot position of a first pole is connected with the last slot position of a second pole following the first pole.
9. A stator (9) according to claim 1, characterized in that the stator (9) is intended for an electric motor.
10. A stator (9) according to claim 8, characterized in that the stator (9) has three or more stator slots (4) per pole, so that for each pole a group of holes (L) is formed having a first slot position, a last slot position and slot positions in between.
11. An electric machine, characterized in that it has a rotor and a stator (9) according to one of the preceding claims 1-10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018125827.5A DE102018125827A1 (en) | 2018-10-18 | 2018-10-18 | Stator for an electrical machine |
| DE102018125827.5 | 2018-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211351845U true CN211351845U (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921742501.1U Active CN211351845U (en) | 2018-10-18 | 2019-10-16 | Stator for an electric machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN211351845U (en) |
| DE (1) | DE102018125827A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021200738A1 (en) | 2021-01-27 | 2022-07-28 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method and tool for manufacturing a machine component for an electrical machine, machine component and electrical machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7622843B2 (en) * | 2006-06-12 | 2009-11-24 | Rerry International, Inc. | Terminals and connections between multi-set segmented hairpin windings |
| JP4688003B2 (en) * | 2007-03-05 | 2011-05-25 | 株式会社デンソー | Rotating electric machine stator and rotating electric machine using the same |
| US9520753B2 (en) * | 2013-07-24 | 2016-12-13 | GM Global Technology Operations LLC | Stator assembly with winding sets having hairpins from multiple hairpin layers |
| JP6410104B2 (en) * | 2015-07-31 | 2018-10-24 | 株式会社デンソー | Rotating electric machine stator and rotating electric machine equipped with the stator |
| DE102016118871A1 (en) * | 2016-10-05 | 2018-04-05 | Elmotec Statomat Holding GmbH | Coil winding for stators or rotors |
| DE102017201533B4 (en) * | 2017-01-31 | 2023-05-25 | Zf Friedrichshafen Ag | Stator for an electric machine |
-
2018
- 2018-10-18 DE DE102018125827.5A patent/DE102018125827A1/en active Pending
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2019
- 2019-10-16 CN CN201921742501.1U patent/CN211351845U/en active Active
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|---|---|
| DE102018125827A1 (en) | 2020-04-23 |
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