EP4029121A1 - Bandförmige wicklungseinheit für eine statorwicklung und verfahren zur herstellung einer bandförmigen wicklungseinheit - Google Patents
Bandförmige wicklungseinheit für eine statorwicklung und verfahren zur herstellung einer bandförmigen wicklungseinheitInfo
- Publication number
- EP4029121A1 EP4029121A1 EP20767964.8A EP20767964A EP4029121A1 EP 4029121 A1 EP4029121 A1 EP 4029121A1 EP 20767964 A EP20767964 A EP 20767964A EP 4029121 A1 EP4029121 A1 EP 4029121A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- winding
- layer
- winding unit
- curved end
- template
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004804 winding Methods 0.000 title claims abstract description 233
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000004020 conductor Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
- H02K15/043—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines winding flat conductive wires or sheets
- H02K15/0432—Distributed windings
- H02K15/0433—Distributed windings of the wave winding type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/20—Shaping or compacting conductors or winding heads after the installation of the winding in the cores or machines; Applying fastening means on winding heads
- H02K15/24—Shaping or compacting winding heads
-
- 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
-
- 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
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
Definitions
- the invention relates to a ribbon-shaped winding unit for a stator winding with a first winding conductor which is guided in several layers of the winding unit.
- the invention also relates to a method for producing such a band-shaped winding unit.
- stator winding In the manufacture of a stator winding in the manner of a wave winding, individual wire strands made of enamelled insulation wire are typically pre-bent over a winding template in order to produce a ribbon-shaped winding unit that can be inserted into the slots of a stator core as part of the stator winding.
- the winding template is usually designed as a thin sword, along which several winding conductors with displaceable wire clamps are bent at the same time in the sense of the winding shape.
- the individual winding units are then connected to the individual phases, the star point and / or to one another, depending on the number of phases of the electric motor.
- the connection sequence, the number of winding conductors and winding units depend on the design of the respective electric motor.
- the winding conductors of the individual phases are unevenly distributed within the slots of the stator core in the area of the connections of the winding units. This results in an asymmetrical magnetic behavior of the stator. This worsens the efficiency of the entire electric motor.
- the task is to enable an electric motor with high efficiency.
- a ribbon-shaped winding unit for a stator winding with a first winding conductor which is guided in several layers of the winding unit and comprises: a. a plurality of slot sections which run straight in a transverse direction of the winding unit and are arranged parallel to one another, b. a first curved end section which connects a first slot section in the first layer with a second slot section in a second layer adjacent to the first layer and is arranged on a first longitudinal side of the winding unit, c. a second curved end section which connects the second slot section in the second position with a third slot section in the first position and is arranged on a second longitudinal side of the winding unit opposite the first longitudinal side, d.
- a third curved end section which connects the third slot section in the first position with a fourth slot section in the second position and is arranged on the first longitudinal side of the winding unit, and e. a fourth curved end section which connects the fourth slot section in the second layer with a fifth slot section in a third layer adjacent to the second layer and is arranged on the second longitudinal side of the winding unit.
- the winding template is not always rotated in the same direction of rotation during the production of the strip-shaped winding unit according to the invention. Rather, the winding template is rotated in a first direction of rotation to form the first, second and third end section and rotated in a second direction of rotation opposite to the first direction of rotation to form the fourth curved end section.
- the winding conductor runs not only in a first and a second layer, but at least also in a third layer. It has been shown that the strip-shaped winding unit according to the invention can be used to produce a stator winding that is symmetrical Has groove distribution also in the transition area of the layers, and thereby leads to an increase in the efficiency of the electric motor.
- the course of the winding conductor is already pre-bent due to the change to the third layer, as it ultimately also runs in the stator, whereby the press-in forces can be reduced when the ribbon-shaped winding unit is introduced into the stator core.
- the ribbon-shaped winding unit comprises a fifth curved end section which connects the fifth slot section in the third layer with a sixth slot section in a fourth layer adjacent to the third layer and is arranged on the first longitudinal side of the winding unit .
- the winding template can be rotated in its first, original direction of rotation.
- the ribbon-shaped winding unit comprises a sixth curved end section which connects the sixth slot section in the fourth layer with a seventh slot section in the third layer and is arranged on the second longitudinal side of the winding unit.
- the winding template can be rotated in its first, original direction of rotation.
- the ribbon-shaped winding unit comprises one or more second winding conductors which are identical to the first winding conductor and are arranged offset in such a way that the first and second winding conductors are arranged in the same several layers of the winding unit.
- the first and second winding conductors have groove sections which run straight in a transverse direction of the winding unit and which are each arranged to run parallel to one another.
- the invention also relates to a method for producing a ribbon-shaped winding unit for a stator winding with a first winding conductor which is guided in several layers of the winding unit, with the following method steps: a. Providing a plurality of straight slot sections which run in a transverse direction of the winding unit and are arranged parallel to one another, b. Providing a first curved end section which connects a first slot section in the first layer with a second slot section in a second layer adjacent to the first layer and is arranged on a first longitudinal side of the winding unit, c.
- An advantageous embodiment of the method provides that, in order to provide the first, second and third curved winding section, the first winding conductor is bent around a first winding template, in particular a first sword template.
- the first winding template is preferably rotated about a first axis of rotation, in particular a longitudinal axis of the first winding template, in each case in the same first direction of rotation when bending to provide the first, second and third curved winding section.
- the winding conductor is bent around a second winding template, in particular a second sword template.
- the second template can be applied to the first template. It is preferred if the second winding template is rotated about a second axis of rotation in a second direction of rotation opposite to the first direction of rotation in order to provide the fourth curved end section.
- the second axis of rotation is preferably parallel to the first axis of rotation and / or is a longitudinal axis of the second winding template.
- the second template is first applied to the first template and then the first template and the second template are rotated, in particular simultaneously, in order to provide the fourth curved end section.
- the first winding template and the second winding template are preferably rotated about the second axis of rotation in the second direction of rotation, which is opposite to the first direction of rotation, in order to provide the fourth curved end section becomes.
- the second axis of rotation is preferably parallel to the first axis of rotation and / or is a longitudinal axis of the second winding template.
- the first winding conductor is bent around a third winding template, in particular a third sword template. Due to the offset, which results from the course in a third layer, it is necessary to continue on the third winding template for the further production of the ribbon-shaped winding unit.
- the third winding template is preferably rotated in the first direction of rotation about a third axis of rotation which corresponds to the direction of rotation of the first winding template for bending the first, second and third end sections.
- the third axis of rotation is preferably parallel to the first axis of rotation and / or the second axis of rotation and / or is a longitudinal axis of the third winding template.
- the first winding conductor is bent around the third winding template in order to provide a sixth curved end section.
- the third winding template is preferably rotated in the first direction of rotation about the third axis of rotation.
- the preferred configurations and optional features discussed in connection with the strip-shaped winding unit can also be used in the method alone or in combination.
- FIG. 1 shows an embodiment of a ribbon-shaped winding unit according to the invention in a side view
- FIG. 2 shows the band-shaped winding unit from FIG. 1 in a plan view
- FIG. 3 shows a stator winding with a band-shaped winding unit according to an exemplary embodiment of the invention in a schematic plan view
- FIG. 4 shows the stator winding from FIG. 3 in a perspective view
- FIG. FIG. 5 shows a detail of the stator winding from FIG. 4 in a plan view
- FIG. 6 shows a detail of the stator winding from FIG. 4 in a view from below.
- the winding unit 1 comprises several winding conductors 2, 2 ‘, which are guided in several, here exactly four, layers L1, L2, L2, L4 of the winding unit 1.
- the winding conductors 2, 2 ' are of identical design and are each arranged offset from one another in such a way that all winding conductors 2, 2' run through the same layers L1, L2, L3, L4 of the winding unit 1.
- Each of the winding conductors 2, 2 ‘comprises a plurality of straight slot sections 3.1-3.8 which run in a transverse direction Q of the winding unit 1 and are arranged parallel to one another.
- the distance between the slot sections 3.1-3.8 is dimensioned such that adjacent slot sections 3.1-3.7 can be introduced into different stator slots of a stator core of an electrical machine.
- the slot sections 3.1-3.8 are connected to one another via end sections 11-17 which, in a state in which the slot sections 3.1-3.8 of the winding unit 1 are inserted into the stator slots of a stator core, protrude from the stator core at the end and form an end winding.
- a first curved end section 11 of a first winding conductor 2 connects a first slot section 3.1 in the first layer L1 with a second slot section 3.2 in a second layer L2 adjacent to the first layer L1.
- This first curved end section 11 is arranged on a first longitudinal side 5 of the winding unit 1, which is shown at the bottom in FIG. 1 and is opposite the first connection.
- a second curved end section 12 connects the second groove section 3.2 in the second position L2 with a third groove section 3.3 in the first position L1.
- This second curved end section is arranged on a second longitudinal side 6 of the winding unit 1 opposite the first longitudinal side 5.
- a third curved end section 13 connects the third groove section 3.3 in the first position L1 with a fourth groove section 3.4 in the second position L2.
- This third curved end section 13 is arranged on the first longitudinal side 5 of the winding unit 1.
- the first winding template which is designed in the manner of a flat sword template.
- the ribbon-shaped winding unit further comprises a fourth curved end section 14, which connects the fourth slot section 3.4 in the second layer L2 with a fifth slot section 3.5 in a third layer L3 adjacent to the second layer L2 and is arranged on the second longitudinal side 6 of the winding unit 1 .
- the winding conductor is bent around a second winding template, which is placed against the first winding template.
- the second winding template is also designed as a sword template, preferably as a sword template identical to the first winding template.
- the second winding template for forming the fourth curved end section 14 is rotated in a second direction of rotation opposite to the first direction of rotation about a longitudinal axis of the second winding template, which is arranged parallel to the first axis of rotation.
- the first winding template is preferably also rotated about its longitudinal axis in the second direction of rotation.
- This change in folding or bending direction forms a further layer of the winding unit 1, here the third layer L3. To this extent, there is a step-like offset in the ribbon-shaped winding unit 1.
- the winding unit 1 further comprises a fifth curved end section 15, which connects the fifth slot section 3.5 in the third layer L3 with a sixth slot section 3.6 in a fourth layer L4 adjacent to the third layer L3 and on the first longitudinal side 5 of the winding unit 1 is arranged.
- the winding conductor 2 is bent around a third winding template. This is also designed as a sword template, preferably identical to the first winding template.
- the winding template is rotated in the first direction of rotation about a longitudinal axis of the third winding template.
- the sixth curved end section 16 connects the sixth slot section 3.6 in the fourth position L4 with a seventh slot section 3.7 in the third position L3 and is arranged on the second longitudinal side 6 of the winding unit 1.
- the winding conductor is again bent around the third winding template, the latter being rotated in the first direction of rotation.
- a ribbon-shaped winding unit 1 is obtained, which has several stages - that is, a change of position.
- the winding conductors 2, 2 ′ of the band-shaped winding unit can have further groove sections and end sections and extend in further layers.
- a winding unit can have a multiple of the length of the winding unit 1 shown in the exemplary embodiment.
- a ribbon-shaped winding unit in accordance with such a modification of the exemplary embodiment can comprise, for example, two or more winding units 1 in accordance with the exemplary embodiment, which are connected in series. In this way, a band-shaped winding unit can be obtained which is adapted to a number of slots in the stator core (laminated core) that differs from the exemplary embodiment.
- FIGS. 3 to 6 show a spiral arrangement of the band-shaped winding unit as a stator winding 20 in the manner of a wave winding of a stator of an electrical machine.
- the stator core (the laminated core) of the stator is not shown for better visibility of the stator winding.
- the strip-shaped winding unit 1 according to this exemplary embodiment is arranged in such a way that, proceeding from first connections (start connections) 21 to second connections (end connections) 22, it runs three turns 24, 25, 26 forms so that a three-layer stator winding 20 results. After each complete revolution 23, 24, 25, the spiral-shaped, band-shaped winding unit 1 jumps in a transition region 26.
- stator winding 20 formed with the strip-shaped winding unit 1 according to the invention has a uniformly alternating distribution of the winding conductor over the slots of the stator core.
- the course of a winding conductor 2 is highlighted here.
- a gradation is achieved in the transition area 26.
- This gradation follows the final course of the wire in the stator even before the band-shaped winding unit 1 is introduced into the stator core, which reduces the press-in forces, since no deformation of the wire is necessary when it is inserted into the stator core.
- the strip-shaped winding unit 1 according to the invention avoids asymmetry in the slots in the region of the start of the stator winding 20, so that an improved magnetic behavior of the electrical machine, that is to say an increase in efficiency, results.
- only lower press-in forces are required when introducing the stator winding 20 into the stator core, since there is no deformation of the wires in the area of the transitions.
- the result is a more even wire course in the winding head, so that a less complex representation and parameterization of the winding in the 3D model is made possible. In this way, a higher accuracy of the model and a reduction in complexity can be achieved
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019124162.6A DE102019124162A1 (de) | 2019-09-09 | 2019-09-09 | Bandförmige Wicklungseinheit für eine Statorwicklung und Verfahren zur Herstellung einer bandförmigen Wicklungseinheit |
| PCT/DE2020/100749 WO2021047727A1 (de) | 2019-09-09 | 2020-08-25 | Bandförmige wicklungseinheit für eine statorwicklung und verfahren zur herstellung einer bandförmigen wicklungseinheit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4029121A1 true EP4029121A1 (de) | 2022-07-20 |
Family
ID=72422043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20767964.8A Withdrawn EP4029121A1 (de) | 2019-09-09 | 2020-08-25 | Bandförmige wicklungseinheit für eine statorwicklung und verfahren zur herstellung einer bandförmigen wicklungseinheit |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220337140A1 (de) |
| EP (1) | EP4029121A1 (de) |
| CN (1) | CN114391210B (de) |
| DE (1) | DE102019124162A1 (de) |
| WO (1) | WO2021047727A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023210416A1 (de) * | 2023-10-23 | 2025-04-24 | Zf Friedrichshafen Ag | Wicklung, Komponente für eine elektrische Maschine, elektrische Maschine, elektrischer Achsantrieb, Kraftfahrzeug und Verfahren zum Herstellen einer Wicklung |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2238504C (en) * | 1997-05-26 | 2001-03-13 | Atsushi Umeda | Stator arrangement of alternator for vehicle |
| JP3384337B2 (ja) * | 1998-09-07 | 2003-03-10 | 株式会社デンソー | 車両用交流発電機の固定子 |
| JP4014071B2 (ja) * | 2000-03-13 | 2007-11-28 | 三菱電機株式会社 | 交流発電機及びその巻線アッセンブリ並びに巻線アッセンブリの製造方法 |
| US7129612B2 (en) * | 2002-01-24 | 2006-10-31 | Visteon Global Technologies, Inc. | Stator assembly with cascaded winding and method of making same |
| US6787961B2 (en) * | 2002-12-19 | 2004-09-07 | Visteon Global Technologies, Inc. | Automotive alternator stator assembly with varying end loop height between layers |
| US6750581B2 (en) * | 2002-01-24 | 2004-06-15 | Visteon Global Technologies, Inc. | Automotive alternator stator assembly with rectangular continuous wire |
| US6882077B2 (en) * | 2002-12-19 | 2005-04-19 | Visteon Global Technologies, Inc. | Stator winding having cascaded end loops |
| DE10321956B4 (de) * | 2002-05-15 | 2013-09-12 | Remy Inc. | Wicklungen aus rechtwinkligen Kupferhaarnadeln in mehreren Sätzen für elektrische Maschinen |
| DE102004035084A1 (de) * | 2004-07-20 | 2006-02-16 | Elmotec Statomat Vertriebs Gmbh | Verfahren und Vorrichtung zur Herstellung einer Spulenwicklung für Statoren oder Rotoren elektrischer Maschinen sowie damit herzustellender Stator oder Rotor |
| US7269888B2 (en) * | 2004-08-10 | 2007-09-18 | Visteon Global Technologies, Inc. | Method of making cascaded multilayer stator winding with interleaved transitions |
| DE102008019479A1 (de) * | 2008-04-17 | 2009-10-29 | Elmotec Statomat Vertriebs Gmbh | Stator oder Rotor für elektrische Maschinen und Verfahren zu seiner Herstellung |
| WO2014050409A1 (ja) * | 2012-09-26 | 2014-04-03 | 三菱電機株式会社 | 電気機械用電機子巻線の製造方法 |
| CN104904098B (zh) * | 2013-01-09 | 2017-08-11 | 三菱电机株式会社 | 旋转电机及旋转电机所使用的电枢的制造方法 |
| DE102014003602A1 (de) * | 2014-03-17 | 2015-09-17 | Elmotec Statomat Vertriebs Gmbh | Verfahren zum Herstellen einer Wicklung |
| FR3020205B1 (fr) * | 2014-04-17 | 2017-11-03 | Valeo Equip Electr Moteur | Procede de realisation d'un bobinage de stator de machine electrique comportant une etape de pre-formation et stator bobine correspondant |
| US20160254718A1 (en) * | 2015-02-26 | 2016-09-01 | Nidec Copal Corporation | Segment conductors, stator, rotating electrical machine, and vehicle and method of manufacturing the segment conductors |
| JP6113247B1 (ja) * | 2015-10-22 | 2017-04-12 | 三菱電機株式会社 | 回転電機の固定子 |
| DE102015120661A1 (de) | 2015-11-27 | 2017-06-01 | Elmotec Statomat Vertriebs Gmbh | Verfahren zur Herstellung einer Spulenwicklung zum Einlegen in radial offene Nuten von Statoren oder Rotoren von Elektromaschinen |
| JP6173507B1 (ja) * | 2016-03-04 | 2017-08-02 | 三菱電機株式会社 | 回転電機の固定子およびその製造方法 |
| US10826364B2 (en) * | 2016-04-27 | 2020-11-03 | Faraday & Future Inc. | Continuous stator winding and electric machine comprising the same |
| DE102017201533B4 (de) * | 2017-01-31 | 2023-05-25 | Zf Friedrichshafen Ag | Stator für eine elektrische Maschine |
-
2019
- 2019-09-09 DE DE102019124162.6A patent/DE102019124162A1/de not_active Ceased
-
2020
- 2020-08-25 WO PCT/DE2020/100749 patent/WO2021047727A1/de not_active Ceased
- 2020-08-25 US US17/641,134 patent/US20220337140A1/en not_active Abandoned
- 2020-08-25 EP EP20767964.8A patent/EP4029121A1/de not_active Withdrawn
- 2020-08-25 CN CN202080063104.0A patent/CN114391210B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021047727A1 (de) | 2021-03-18 |
| DE102019124162A1 (de) | 2021-03-11 |
| US20220337140A1 (en) | 2022-10-20 |
| CN114391210A (zh) | 2022-04-22 |
| CN114391210B (zh) | 2024-08-09 |
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