EP4623507A1 - Verfahren zur herstellung eines bewickelten stators - Google Patents
Verfahren zur herstellung eines bewickelten statorsInfo
- Publication number
- EP4623507A1 EP4623507A1 EP23821887.9A EP23821887A EP4623507A1 EP 4623507 A1 EP4623507 A1 EP 4623507A1 EP 23821887 A EP23821887 A EP 23821887A EP 4623507 A1 EP4623507 A1 EP 4623507A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- winding
- pull
- lamellae
- wave winding
- 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.)
- Pending
Links
Classifications
-
- 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
- H02K15/06—Embedding prefabricated windings in the machines
- H02K15/062—Windings in slots; Salient pole windings
- H02K15/065—Windings consisting of complete sections, e.g. coils or waves
- H02K15/067—Windings consisting of complete sections, e.g. coils or waves inserted in parallel to the axis of the slots or inter-polar channels
-
- 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
Definitions
- Electric motors are increasingly being used to power motor vehicles in order to create alternatives to combustion engines that require fossil fuels.
- Considerable efforts have already been made to improve the suitability of electric drives for everyday use and to offer users the same driving comfort they are used to.
- the process of pulling such a wave winding into the stator is well known and is described, for example, in WQ2017093477A1.
- the process currently known from the state of the art is divided into two production stages.
- the wave winding which has been rolled onto the pulling mandrel, is inserted radially into the laminated core of the stator.
- the winding wires of the wave winding are moved from the slot area (slot opening) to the slot base.
- the winding head is not yet in its final position.
- the pulling mandrel and its pulling lamellas are then moved back to their basic position.
- the joining force is thus introduced exclusively via axially and/or radially adjacent pull-in lamellas, where no clamping effect occurs, or the joining force is introduced in the axial area in the stator of the wire beginnings. Since after the expansion process, i.e. the radial insertion of the wave winding into the stator slots, the wire ends or the winding head of the wave winding are located radially further inwards than the conductor sections of the wave winding already inserted into the stator slots, this offset is now compensated in the second process step - the winding head expansion.
- the stator to be manufactured preferably has a stator body.
- the stator body can be made of one piece or several pieces, in particular segmented.
- a one-piece stator body is characterized in that the entire stator body is made of one piece over its circumference.
- the stator body is generally formed from a large number of stacked laminated electrical sheets, each of the electrical sheets being closed to form a circular ring.
- a segmented stator body is characterized in that it is made up of individual stator segment parts.
- the stator body can be made up of individual stator teeth or stator tooth groups, each individual stator tooth or each individual stator tooth group being formed from a large number of stacked laminated electrical sheets, each of the electrical sheets being designed as a stator segment sheet part.
- the stator body is preferably formed from one or more stator lamination packages.
- a stator lamination package is understood to be a plurality of laminated individual sheets or stator laminations, usually made from electrical steel, which are layered and packaged on top of one another to form a stack, the so-called stator lamination package. The individual sheets can then remain held together in the lamination package, for example by gluing, welding or screwing.
- stator teeth of the stator are preferably formed in the stator body.
- Stator teeth are components of the stator body which are designed as circumferentially spaced, tooth-like, radially inwardly directed parts of the stator body and which have a Air gap is formed for the magnetic field.
- the air gap is the gap that exists between the rotor and the stator. In a radial flux machine, this is essentially a circular gap with a radial width that corresponds to the distance between the rotor body and the stator body.
- the stator is particularly intended for use in an electric machine within a drive train of a motor vehicle.
- the electric machine is particularly intended for use within a drive train of a hybrid or fully electric motor vehicle.
- the electric machine is dimensioned such that vehicle speeds greater than 50 km/h, preferably greater than 80 km/h and in particular greater than 100 km/h can be achieved.
- the electric machine particularly preferably has an output greater than 30 kW, preferably greater than 50 kW and in particular greater than 70 kW. It is further preferred that the electric machine provides speeds greater than 5,000 rpm, particularly preferably greater than 10,000 rpm, most preferably greater than 12,500 rpm.
- the pull-in lamellae are displaced radially outwards.
- the pull-in lamellae in the area of the winding head are displaced radially outwards in such a way that they act on the inner circumference of the winding head with a force acting radially outwards.
- the advantageous effect of this design is based on the fact that the winding head is reshaped after the conductor sections of the wave winding have been inserted into the stator slots. This results in a temporal decoupling of the insertion of the wave winding into the stator slots and the forming of the winding head, which reduces the risk of undesirable tension in the winding head area during the stator manufacturing process.
- the invention can also be further developed in such a way that the intake slats are designed to be essentially identical, which, due to the increased uniformity, realizes cost advantages in their production but also advantages in terms of process control.
- Figure 1 shows a stator in a first manufacturing state in an axial section
- Figure 2 shows a stator in a first manufacturing state in a cross-sectional view of the slot area
- Figure 3 shows a stator in a first manufacturing state in a cross-sectional view of the winding head area
- Figure 4 shows a stator in a second manufacturing state in an axial section
- Figure 5 shows a stator in a second manufacturing state in a cross-sectional view of the slot area
- Figure 6 shows a stator in a second manufacturing state in a cross-sectional view of the winding head area
- Figure 7 shows a stator in a third manufacturing state in an axial section
- Figure 8 shows a stator in a third manufacturing state in a cross-sectional view of the slot area
- Figure 9 shows a stator in a third manufacturing state in a cross-sectional view of the winding head area
- Figure 10 shows a stator in a fourth manufacturing state in a cross-sectional view of the winding head area.
- a method for producing a wound stator 1 for an electrical machine is explained in more detail using figures 1 - 10 as an example.
- a hollow cylindrical stator 1 is provided with a plurality of stator slots 3, which extend from an inner circumferential surface 4 of the stator 1 radially outwards and in the axial direction through the stator 1, which can be clearly seen from Figure 2, for example.
- a wave winding 5 and a pull-in mandrel 6 are then provided and the wave winding 5 is rolled onto the pull-in mandrel 6.
- the wave winding 5 is formed from winding conductors with a rectangular cross-section.
- the pull-in mandrel 6 thus equipped with the wave winding 5 is then pushed axially into the hollow cylindrical stator 1. This manufacturing state is shown in Figures 1 - 3.
- the winding head 8 can have wire ends via which the wave winding 5 can be electrically contacted and energized.
- the wave winding 5 When the wave winding 5 is pushed into the stator slots 3, only the pull-in lamellae 7 in the area of the wire ends of the winding head 8 can be set back radially inwards compared to the pull-in lamellae 7 in the area of the stator slots 3, as shown in Figure 10.
- the areas of the winding head 8 that lie outside the area of the wire ends are radially formed in the circumferential direction.
- the wire ends can then be radially formed so that the manufacturing state shown in Figure 9 is achieved.
- the wire ends are adjacent to one another circumferentially at approximately 11 o'clock, 12 o'clock and 1 o'clock.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022131131.7A DE102022131131A1 (de) | 2022-11-24 | 2022-11-24 | Verfahren zur Herstellung eines bewickelten Stators |
| PCT/DE2023/100888 WO2024109987A1 (de) | 2022-11-24 | 2023-11-16 | Verfahren zur herstellung eines bewickelten stators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4623507A1 true EP4623507A1 (de) | 2025-10-01 |
Family
ID=89190800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23821887.9A Pending EP4623507A1 (de) | 2022-11-24 | 2023-11-16 | Verfahren zur herstellung eines bewickelten stators |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4623507A1 (de) |
| KR (1) | KR20250065674A (de) |
| CN (1) | CN119999058A (de) |
| DE (1) | DE102022131131A1 (de) |
| WO (1) | WO2024109987A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3020208B1 (fr) * | 2014-04-17 | 2018-02-23 | Valeo Equipements Electriques Moteur | Stator de machine electrique muni de chignons a hauteur adaptee et procede de realisation du stator bobine correspondant |
| DE102015120963A1 (de) | 2015-12-02 | 2017-06-08 | Elmotec Statomat Vertriebs Gmbh | Verfahren und Vorrichtung zur Herstellung von Rotoren oder Spulen von elektrischen Maschinen |
| EP3624314A1 (de) * | 2018-09-17 | 2020-03-18 | Siemens Aktiengesellschaft | Einziehen von wicklungen in ein statorblechpaket |
| DE102020103165A1 (de) * | 2019-05-16 | 2020-11-19 | Schaeffler Technologies AG & Co. KG | Stator für eine elektrische Maschine mit bandförmiger Wicklungseinheit für eine Statorwicklung und Verfahren zu dessen Herstellung |
-
2022
- 2022-11-24 DE DE102022131131.7A patent/DE102022131131A1/de not_active Ceased
-
2023
- 2023-11-16 CN CN202380069881.XA patent/CN119999058A/zh active Pending
- 2023-11-16 EP EP23821887.9A patent/EP4623507A1/de active Pending
- 2023-11-16 KR KR1020257011437A patent/KR20250065674A/ko active Pending
- 2023-11-16 WO PCT/DE2023/100888 patent/WO2024109987A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024109987A1 (de) | 2024-05-30 |
| DE102022131131A1 (de) | 2024-05-29 |
| KR20250065674A (ko) | 2025-05-13 |
| CN119999058A (zh) | 2025-05-13 |
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