CN116802976A - Segmented stator, method for producing an immersion-type segmented stator, and electric machine - Google Patents
Segmented stator, method for producing an immersion-type segmented stator, and electric machine Download PDFInfo
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- CN116802976A CN116802976A CN202280011449.0A CN202280011449A CN116802976A CN 116802976 A CN116802976 A CN 116802976A CN 202280011449 A CN202280011449 A CN 202280011449A CN 116802976 A CN116802976 A CN 116802976A
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- Prior art keywords
- stator
- segmented
- segmented stator
- immersion
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- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000004804 winding Methods 0.000 claims abstract description 39
- 238000009413 insulation Methods 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims description 38
- 229920005989 resin Polymers 0.000 claims description 38
- 238000007654 immersion Methods 0.000 claims description 30
- 238000005470 impregnation Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 21
- 230000009969 flowable effect Effects 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 4
- 239000011800 void material Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000003475 lamination Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- 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
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The application relates to a segmented stator (1) for an electric machine, comprising a ring-shaped stator body (3) which is formed from a plurality of ring-segment-shaped stator segments (4), wherein the stator segments (4) have at least one stator tooth which protrudes radially inwards or outwards and is formed in one piece with the stator segments (4) and which is wound by a stator winding (6), and the stator body (3) is surrounded at least in sections by an insulation (7), wherein the insulation (7) has an axial end face (8) which has a ramp (19) extending from a radially outer edge (9) to a radially inner edge (10) or a ramp extending from the center of the tangential stator segment to a tangential edge (17, 18) of the stator segment or a combination of both ramps.
Description
Technical Field
The application relates to a segmented stator for an electric machine, comprising a ring-shaped stator body, which is formed from a plurality of ring-segment-shaped stator segments, wherein the stator segments have at least one stator tooth protruding radially inwards and formed in one piece with the stator segments, which stator tooth is wound with a stator winding, and the stator body is surrounded at least in sections by an insulation. The application also relates to a method for producing an immersion-type impregnated segmented stator and an electric machine.
Background
Segmented stators are known in principle from the prior art. DE19857954A1 describes an electrical machine with a segmented stator having a plurality of stator segments which are injection-molded with a plastic coating. The stator sections are arranged in a ring-shaped manner and fastened to one another via a tooth-tooth gap connection at joint surfaces facing one another in the circumferential direction. A stator for an electric machine is known from DE102008023923A1, which stator is composed of individual stator segments encapsulated by an insulating layer. Similar motors are also described, for example, in EP1499000A1 and DE102008033601 A1.
The stator segments that form the stator ring each have stator teeth, which are coils wound by winding wires, wherein the winding wires have two open wire ends. In the segmented stator, the winding wires of the coils are connected to each other.
In order to insulate a stator, it is known to impregnate the stator completely or in sections. For this purpose, different impregnation methods are known from the prior art.
In immersion impregnation, for example, the entire stator is immersed or immersed in a flowable impregnating medium, for example a resin, and impregnated. The resin is then hardened by energy transfer. This may be done, for example, by energizing a stator coil that heats up causing gelling of the resin. Immersion impregnation in particular also makes it possible to fix the stator lamination and to coat the stator body and the stator winding in a single process step. The immersion impregnation also causes the stator to form an overall system that is itself electrically insulating and protected from wear.
Such immersion impregnation methods of the prior art are described, for example, in EP2887507 A1. After hardening of the immersion medium, the insulated stator is then fixed in the motor housing, for example by means of an interference fit.
A variant of the method technique of immersion impregnation is immersion. In this case, the stator is first positioned in an empty immersion pot, into which the flowable immersion medium then flows. For this purpose, the stator may be immersed with impregnating resin after being mounted into a stator carrier (housing part), wherein the housing part serves as a container for the resin. In terms of process and impregnation results, immersion is substantially equivalent to immersion impregnation.
However, in the impregnation method described hereinabove, it is possible that, when the impregnating resin is not sufficiently discharged from the stator, resin drops and resin sagging form at the stator, which then interfere at the time of placement or installation of the stator and cause an inclined position, for example.
In addition to the problems described above, the insulation system has, due to the sectionalization, a weak point at the butt joint of the sections, for which either the air gap and the creepage distance (with the disadvantage of higher copper losses) have to be observed or the insulation film is costly to cover (with the disadvantage of high costs).
Disclosure of Invention
The application is based on the object of providing a segmented stator for an electric machine, in which the risk of formation of resin drops and resin sagging is reduced. Furthermore, the object of the application is to achieve safe insulation at the lowest cost with the highest slot space factor. Furthermore, the object of the application is to achieve an improved method for producing an immersion-immersed segmented stator. Finally, it is also an object of the application to provide an electric machine with an optimized stator.
The object is achieved by a segmented stator for an electric machine with a ring-shaped stator body, which is formed by a plurality of ring-segment-shaped stator segments, wherein the stator segments have at least one radially inwardly protruding stator tooth, which is formed in one piece with the stator segments and is wound by a stator winding, and the stator body is surrounded at least in sections by an insulation, wherein the insulation has an axial end face, which in the yoke region has a slope extending from a radially outer edge to a radially inner edge or a slope extending from a tangential stator segment center to a tangential edge of the stator segments or a combination of both slopes.
The dip resin which collects axially in the volume upstream of the stator yoke by the slope of the insulation surface flows out in a targeted manner in the region of the slot bottom, where the butt joint forms a weak point of the core insulation. The resin which flows out forms a safe resin layer at the weak point during the outflow duration, thereby reliably protecting the insulation system.
By adapting the geometry of the insulation of the stator section, a simplified and safe outflow of the impregnating material should be possible, in order to avoid or at least reduce the formation of resin residues in the yoke region on the one hand, and to ensure that the impregnating material protects the insulation system weaknesses during the impregnation process in a targeted manner by means of a uniform insulation layer on the other hand.
The insulating portion may be formed of any material that serves as an electrical insulator, such as plastic, paper and/or ceramic.
Preferably, the insulating part can be formed as a plastic injection-molded encapsulation of the stator body. The stator sections can be inserted into an injection mold, for example, in order to be subsequently encapsulated by plastic injection molding, so that the plastic injection molding is molded in a material-and/or form-fitting manner onto the stator sections.
In principle, it is of course also conceivable for the insulating part to be formed as a separate component, in particular a component made of plastic, paper and/or ceramic, and then to be connected to the stator body in particular in a material-and/or form-fitting manner.
It is also conceivable that the insulation is composed of a composite material formed of plastic, paper and/or ceramic. In this case, it is particularly preferred that the insulation is formed from a layer material comprising plastic, paper and/or ceramic.
In a preferred embodiment of the application, it can be provided that the ramp is configured such that, when the segmented stator is moved in the axial direction out of the resin-filled impregnation tank or after immersion the resin is discharged in the axial direction, the flowable electrically insulating resin flows under the force of gravity following the ramp over the end face.
First of all, the individual elements of the claimed inventive object are set forth in the order they are presented in the claims, and particularly preferred embodiments of the inventive object are described below.
The segmented stator according to the application is especially configured for use in an electric machine. An electric machine is used for converting electrical energy into mechanical energy and/or vice versa, and generally comprises a stationary component, called stator, stator or armature, and a component, called rotor or rotor, which is movably, in particular rotatably, arranged relative to the stationary component.
In particular, the electric machine is dimensioned such that motor vehicle speeds of more than 50km/h, preferably more than 80km/h and in particular more than 100km/h can be achieved. It is particularly preferred that the electric motor has a power of more than 30kW, preferably more than 50kW and especially more than 70 kW. It is also preferred that the motor provides a rotational speed of more than 5000U/min, particularly preferably more than 10000U/min, completely particularly preferably more than 12500U/min.
In the sense of the present application, a land vehicle that moves by mechanical force is considered a motor vehicle and is not constrained to a track. The motor vehicle may be selected from, for example, a passenger car (PKW), a load-carrying vehicle (LKW), a scooter, a light motor vehicle, a motorcycle, a bus (KOM), or a tractor.
Preferably, the segmented stator is provided for use in a radial flux electric machine. The stator of a radial flux electric machine is generally cylindrical in construction and is generally composed of silicon steel sheets that are electrically insulated from one another and are layered in construction and stacked into a lamination stack. By means of the construction, the eddy currents in the stator caused by the stator field are kept small.
The stator body of the segmented construction is characterized in that it is constructed from individual stator segment parts. The stator body can be formed from individual stator teeth or stator tooth groups, wherein each individual stator tooth or each individual stator tooth group can be formed from a plurality of stacked laminated sheet silicon steel, wherein each sheet silicon steel forms a stator segment lamination component.
A plurality of laminated individual laminations, which are usually produced from sheet silicon steel, are understood to be lamination packs or stator segment lamination parts, which are layered on top of one another and stacked in a stack, the so-called lamination pack. The individual laminations can then be held together in the lamination stack by bonding, welding, or wedging or screwing, etc.
The stator body is formed as a part of the stator body that is circumferentially spaced apart, toothed radially inwardly or outwardly oriented, called stator tooth, and an air gap for the magnetic field is formed between the free end of the stator tooth and the rotor body.
The stator may in particular be arranged in the motor housing. The motor housing encloses the electric motor. In addition, the motor housing may also house control electronics and power electronics. Furthermore, the motor housing may also be part of a cooling system for the electric machine and be designed such that a cooling fluid can be fed through the motor housing of the electric machine and/or heat can be extracted out through the housing face. Furthermore, the motor housing protects the electric machine and possibly the electronics from external influences. The motor housing may in particular be formed from a metallic material. In an advantageous manner, the motor housing can be formed from a metallic cast material, such as gray cast iron or cast steel. In principle, it is also conceivable for the motor housing to be composed entirely or partially of plastic.
According to an advantageous embodiment of the application, it can be provided that the winding plate extends in the axial direction, through which the ends of the stator windings at the stator body are guided, whereby a certain guiding and defined position is provided for the ends of the stator windings. Furthermore, the winding plate can also form a flow barrier or a flow guiding element for the flowable immersion medium.
According to a further preferred development of the application, it can also be provided that the winding plate has a lead-through opening for leading through the end of the stator winding, wherein a shoulder is provided in the region of the lead-through opening, which shoulder extends into the lead-through opening in the axial direction from the direction of the axial end face, whereby a dam is formed which can prevent the immersion medium from being discharged through the lead-through opening.
Furthermore, according to an equally advantageous embodiment of the application, it can be provided that the winding plates of two stator sections adjacent in the circumferential direction are arranged such that a gap is formed between the winding plates axially above the gap (insulation system weakening) extending in the axial direction, whereby the outflow of the immersion medium can be further optimized. According to a further particularly preferred embodiment of the application, it can be provided that the recess has a circumferential opening width of between 1 and 2.7 times the wire diameter. In this case, it is particularly preferred if the winding wire of the stator winding has a circular cross section.
In addition, the present application can be modified as follows: the axial end face of the insulation has a slope extending to the first and/or second circumferential edge or a slope extending from the tangential stator segment center to the tangential edge of the stator segment or a combination of both slopes, so that the outflow of the immersion medium can be further improved.
In order to provide an optimized insulation, it can also be provided that the gap at the interface of the stator segments is substantially completely filled with an electrically insulating resin.
The object of the application is also achieved by a method for manufacturing an immersion-impregnated segmented stator according to any one of claims 1 to 8, comprising the steps of:
the segmented stator according to any one of claims 1 to 8 is assembled,
the method comprises the following steps of:
immersing or immersing the segmented stator in its axial direction into an impregnation tank filled with a flowable impregnation medium, in particular a resin,
the segmented stator is removed from the impregnation tank or the resin is drained in the axial direction of the segmented stator,
dripping the immersion medium from the segmented stator, and
and (3) performing heat hardening on the impregnating medium.
The immersion impregnation method is therefore used according to the application and the resin flow is designed such that a larger impregnating resin volume flows away via the gap of the insulation system at the junction of two adjacent stator sections. A safe insulating covering of the weak points of the insulation system is ensured by a coating effect.
Finally, the object of the application is also achieved by an electric machine, in particular for a hybrid or all-electric powertrain of a motor vehicle, comprising a segmented stator according to any one of claims 1 to 8.
Drawings
Without limiting the general inventive concept, the present application is described in detail below with reference to the accompanying drawings.
The drawings show:
figure 1 shows a segmented stator in a perspective view,
fig. 2 shows a stator section of a segmented stator in a perspective view, and
fig. 3 shows a detail view of two adjacent stator segments in a perspective view.
Detailed Description
Fig. 1 shows a segmented stator 1 for an electrical machine with a ring-shaped stator body 3, which is formed from a plurality of ring-segment-shaped stator segments 4. The directional description used is indicated by means of arrows representing the axial direction 21, the radial direction 22 and the circumferential direction 23. This is explained in detail below with reference to the detailed view of fig. 2.
Fig. 2 shows a stator section 4 having a stator tooth core protruding radially inwards and formed in one piece with the stator section 4, which has an insulation 7 and is wound with a stator winding 6. Thus, in the illustration of fig. 2, the stator tooth core is covered by the stator winding 6 and is visible only in the yoke region. The stator winding 6 is wound around the stator teeth core in the axial direction 21 and the circumferential direction 23.
The stator tooth core of the stator section 4 is surrounded at least in sections by a plastic injection molding 7 at its tangential and axial outer circumference. The insulating part 7, which is formed as a plastic injection-molded part, has an axial end face 8 with a ramp 19 extending from the radially outer edge 9 to the radially inner edge 10. The ramp 19 is configured such that the flowable electrically insulating resin flows on the end face 8 following a ramp under the force of gravity when the segmented stator 1 moves in the axial direction away from the resin-filled impregnation tank. This is indicated by the dashed arrow provided with reference numeral 19. The end face 8 also has a slope in the circumferential direction 23 that decreases from the tangential stator segment center toward the edges 17 and 18.
As can also be seen from fig. 2, the winding plate 12 extends in the axial direction 21, through which the end 11 of the stator winding 6 at the stator body 3 is guided. The winding plate 12 has a threading opening 13 for threading the end 11 of the stator winding 6. In the region of the through-opening 13, a shoulder 14 is provided which extends in the axial direction from the direction of the axial end face 8 into the through-opening 13.
Thus, a ramp 19 is provided in the radially outer yoke region of the plastic injection molding 7 of the stator section 4, whereby the flowable resin flows radially inward up to the winding plate 12 when the segmented stator 1 is moved in the axial direction out of the corresponding impregnation tank or the resin is discharged in the axial direction. The task of the winding plate 12 is to support the winding heads during winding and at the same time prevent further resin flow and thus guide said resin to the interspace 15.
As shown in fig. 3, the winding plates 12 of two stator sections 4 adjacent in the circumferential direction are arranged such that a gap is formed between the winding plates 12, which extends radially in the end face and then in the axial direction in the slot bottom. The axial end face 8 of the plastic injection-molded part 7 also has a ramp 20 which extends to the first circumferential edge 17 and/or the second circumferential edge 18. The direction of the slope is indicated by the dashed arrow with reference numeral 20. The ramp 20 is also configured such that when the segmented stator 1 moves in the axial direction out of the resin filled impregnation tank or after immersion the resin is expelled, the flowable electrically insulating resin flows under gravity along the ramp over the end face 8 to the void 15.
A further advantage of the described embodiment is that the gap at the junction of adjacent stator sections 4 is closed by the flowing-out resin, thereby avoiding the need to observe the air gap and creepage distance from the coil to the core in the region of the slot bottom center in a narrow installation space.
For manufacturing the immersion-type impregnated segmented stator 1, as shown in fig. 1 to 2, it can be performed as follows:
the sectional stator (1) is assembled,
the step of immersing the segmented stator (1) includes the steps of:
the segmented stator (1) is immersed or immersed in its axial direction into an impregnation tank filled with a flowable impregnation medium, in particular a resin,
the segmented stator (1) is taken out of the impregnation tank in its axial direction or the insulating resin is discharged in the axial direction,
dropping the immersion medium from the segmented stator (1), and
the immersion medium is thermally hardened.
The application is not limited to the embodiments shown in the figures. Accordingly, the foregoing description is not to be considered as limiting, but rather as explanatory. The following claims should be studied to determine the existence of such features in at least one embodiment of the application. This does not preclude the presence of other features. If the claims and the above description define "first" and "second" features, the names are used to distinguish two features of the same type, without specifying a priority.
List of reference numerals
1. Stator
3. Stator body
4. Stator section
6. Stator winding
7. Insulation part
8. End face
9. Edge of the sheet
10. Edge of the sheet
11. End portion
12. Winding board
13. Threading opening
14. Shoulder
15. Void space
16. Opening size
17. Edge of the sheet
18. Edge of the sheet
19. Slope
20. Slope
21. Axial direction
22. Radial direction
23. Circumferential direction
Claims (10)
1. A segmented stator (1) for an electric machine, comprising a ring-shaped stator body (3) which is formed from a plurality of ring-segment-shaped stator segments (4), wherein the stator segments (4) have at least one stator tooth which protrudes radially inwards or outwards and is formed in one piece with the stator segments (4), which stator tooth is wound with a stator winding (6), and the stator body (3) is surrounded at least in sections by an insulation (7),
it is characterized in that the method comprises the steps of,
the insulation (7) has an axial end face (8) with a slope (19) extending from a radially outer edge (9) to a radially inner edge (10) or a slope extending from a tangential stator segment center to a tangential edge (17, 18) of the stator segment or a combination of both slopes.
2. The segmented stator (1) according to claim 1,
it is characterized in that the method comprises the steps of,
the winding plate (12) extends in the axial direction, through which the end (11) of the stator winding (6) at the stator body (3) is guided.
3. The segmented stator (1) according to any one of the preceding claims,
it is characterized in that the method comprises the steps of,
the winding plate (12) has a lead-through opening (13) for leading through an end (11) of the stator winding (6), wherein a shoulder (14) is provided in the region of the lead-through opening (13) which extends in the axial direction from the axial end face (8) into the lead-through opening (13).
4. The segmented stator (1) according to any one of the preceding claims,
it is characterized in that the method comprises the steps of,
the winding plates (12) of two stator sections (4) adjacent in the circumferential direction are arranged such that a gap (15) extending in the axial direction is formed between the winding plates (12).
5. The segmented stator (1) according to claim 4,
it is characterized in that the method comprises the steps of,
the gap (15) has a circumferential opening width (16) of between 1 and 2.7 times the wire diameter.
6. The segmented stator (1) according to any one of the preceding claims,
it is characterized in that the method comprises the steps of,
the recess (15) is arranged axially above a gap extending in the axial direction at the junction between adjacent stator sections (4), and an insulating layer is formed on and/or in the gap by the flowing-away immersion medium.
7. The segmented stator (1) according to any one of the preceding claims,
it is characterized in that the method comprises the steps of,
the ramp (19, 20) is configured such that, when the segmented stator (1) is moved in an axial direction out of a resin-filled impregnation tank, the flowable electrically insulating resin flows under gravity to the void (15) following a ramp over the end face (8).
8. The segmented stator (1) according to any one of the preceding claims,
it is characterized in that the method comprises the steps of,
the gaps at the interface between adjacent stator segments (4) are substantially completely filled with electrically insulating resin.
9. A method for manufacturing an immersion impregnated segmented stator (1) according to any one of claims 1 to 8, the method comprising the steps of:
assembling a segmented stator (1) according to any one of claims 1 to 8,
-immersion impregnation of the segmented stator (1), comprising the steps of:
immersing or immersing the segmented stator (1) in the axial direction thereof into an immersion tank filled with a flowable immersion medium, in particular a resin,
discharging the immersion medium from the immersion tank or removing the segmented stator (1) in the axial direction of the segmented stator,
dropping the immersion medium from the segmented stator (1), and
the immersion medium is thermally hardened.
10. An electric machine, in particular for a hybrid or all-electric powertrain of a motor vehicle, comprising a segmented stator according to any one of claims 1 to 8.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021101461.1 | 2021-01-25 | ||
| DE102021101461.1A DE102021101461A1 (en) | 2021-01-25 | 2021-01-25 | Segmented stator, method for manufacturing a dip-impregnated segmented stator and electrical machine |
| PCT/DE2022/100005 WO2022156851A1 (en) | 2021-01-25 | 2022-01-10 | Segmented stator, method for producing a bath impregnated, segmented stator, and electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116802976A true CN116802976A (en) | 2023-09-22 |
Family
ID=79927567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280011449.0A Pending CN116802976A (en) | 2021-01-25 | 2022-01-10 | Segmented stator, method for producing an immersion-type segmented stator, and electric machine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN116802976A (en) |
| DE (1) | DE102021101461A1 (en) |
| WO (1) | WO2022156851A1 (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3631980A1 (en) | 1986-09-19 | 1988-03-31 | Gottlob Thumm Gmbh & Co Kg | Method and impregnating machine for impregnating electrical machine parts |
| DE3712226A1 (en) | 1987-04-10 | 1988-10-27 | Danfoss As | ELECTRICAL MACHINE WITH A WINDING PACKAGE AND A METHOD FOR THEIR PRODUCTION |
| DE19857954A1 (en) | 1998-12-16 | 2000-06-21 | Pierburg Ag | Electronic commutated DC motor comprises pole stator composed of several circular ring segments having distance holders in which locking catches are cast |
| JP3973509B2 (en) | 2002-07-30 | 2007-09-12 | ミネベア株式会社 | Stator device |
| DE50303111D1 (en) | 2003-07-12 | 2006-06-01 | Grundfos As | Segmented stator |
| EP1742335B1 (en) * | 2005-07-08 | 2009-03-04 | AEG Electric Tools GmbH | Stator and method of manufacturing of a stator for an electric motor |
| DE102008023923A1 (en) | 2007-07-10 | 2009-01-22 | Sew-Eurodrive Gmbh & Co. Kg | Stator for electric motor, has end cap provided at axial end areas of stator segment, where segment is provided with winding, and segment, insulating layer and end caps implemented as composite part |
| DE102008033601A1 (en) | 2008-07-17 | 2010-01-21 | Sew-Eurodrive Gmbh & Co. Kg | Electric motor, has end cap positively connected with retaining ring, and encapsulating cap positively connected with another cap lying axially opposite to former end cap, where encapsulating cap projects outwardly |
| JP5938856B2 (en) * | 2011-06-28 | 2016-06-22 | 日産自動車株式会社 | Stator, motor and insulator using the stator |
| EP2887507A1 (en) | 2013-12-18 | 2015-06-24 | Siemens Aktiengesellschaft | Impregnation of a stator of an electrical machine |
| EP3255759A1 (en) * | 2016-06-10 | 2017-12-13 | Goodrich Control Systems | Stator assembly |
-
2021
- 2021-01-25 DE DE102021101461.1A patent/DE102021101461A1/en active Pending
-
2022
- 2022-01-10 CN CN202280011449.0A patent/CN116802976A/en active Pending
- 2022-01-10 WO PCT/DE2022/100005 patent/WO2022156851A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021101461A1 (en) | 2022-07-28 |
| WO2022156851A1 (en) | 2022-07-28 |
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