WO2023227662A2 - Procédé de fabrication d'un manchon de stator composite - Google Patents
Procédé de fabrication d'un manchon de stator composite Download PDFInfo
- Publication number
- WO2023227662A2 WO2023227662A2 PCT/EP2023/063914 EP2023063914W WO2023227662A2 WO 2023227662 A2 WO2023227662 A2 WO 2023227662A2 EP 2023063914 W EP2023063914 W EP 2023063914W WO 2023227662 A2 WO2023227662 A2 WO 2023227662A2
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- WO
- WIPO (PCT)
- Prior art keywords
- stator sleeve
- prepreg tape
- stator
- sleeve
- cylindrical mandrel
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
-
- 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
- H02K15/14—Casings; Enclosures; Supports
Definitions
- the present invention generally relates to stator sleeves used in electric motors. More particularly, the present invention relates to the method of manufacturing a composite stator sleeve used in high-performance electric motors with liquid cooled stators.
- an electric motor has several critical components that enable it to efficiently and effectively convert electrical energy into mechanical energy. Each one helps drive the critical interaction between the motor's magnetic field and the electric current in its wire winding to generate force in the form of shaft rotation. It is the mechanical energy produced by this shaft rotation that helps keep electric cars in motion or a plant’s operations up and running smoothly.
- These components may include a rotor, a stator, bearings, windings and an air gap.
- the Rotor is the moving part of your electric motor. It turns the shaft that delivers the mechanical power mentioned above.
- the rotor has conductors laid into it that carry currents which then interact with the magnetic field of the stator to generate the forces that turn the shaft. Having said that, some rotors carry permanent magnets and it is the stator that holds the conductors.
- the Stator and Stator Core The stator is the stationary part of your motor's electromagnetic circuit and usually consists of either windings or permanent magnets.
- the stator core is made up of many thin metal sheets, called laminations. Laminations are used to reduce energy losses that would result if a solid core were used.
- the Bearings The rotor in your electric motor is supported by bearings, which allow it to turn on its axis. These bearings are in turn supported by the motor housing.
- the motor shaft extends through the bearings to the outside of the motor, where the load is applied. Because the forces of the load are exerted beyond the outermost bearing, the load is said to be “overhung.”
- Windings are wires that are laid in coils, usually wrapped around a laminated soft iron magnetic core so as to form magnetic poles when energized with current.
- Electric motors come in two basic magnet field pole configurations: salient-pole and non-salient-pole.
- salient-pole motor the pole's magnetic field is produced by a winding wound around the pole below the pole face.
- non-salient-pole motor the winding is distributed in pole face slots.
- the Air Gap Although not a physical component, the air gap is the distance between the rotor and stator.
- the motor air gap has important effects, and is generally as small as possible, as a large gap has a strong negative effect on performance. It is the main source of the low power factor at which motors operate. Because the magnetizing current increases with the air gap, your air gap should be minimal. Having said that, very small gaps may pose mechanical interference problems.
- High-performance electric motors may generate a lot of heat, especially in the conductors. Therefore, many high-performance electric motors are configured where the rotors carry the permanent magnets and the stator holds the conductors.
- Liquid cooling can then be used to directly cool the conductors resulting in a liquid cooled stator.
- a stator sleeve can be used to separate the stator from the rotor enabling the use of fluid coolants.
- Such liquid cooled motors can be used for applications such as E-mobility where high efficiency and power to weight ratio is important.
- Applicable inner rotor/outer stator motors include, but are not limited to, induction motors (IM), internal permanent magnet motors (IPM), Synchronous Reluctance Motors (SynRM), and IPM- SynRM motors. Additionally, outer rotor/inner stator motors such as in-wheel motors can benefit from the present invention.
- Stator sleeves are known within the state of the art. For example, US 2003/0193260 teaches a powder metal stator sleeve. Metal stator sleeves are not desirable due to electrical conductivity and the resultant eddy current losses that reduce motor efficiency.
- Application DE102020119110A1 teaches a stator sleeve that attempts to address cooling of high-performance electric motors.
- the present application improves upon this teaching in many ways as is discussed further below.
- stator sleeve The purpose of a stator sleeve is to create a barrier between the stator and the rotor in an electric motor to allow coolant to flow through the stator to cool, resulting in increased motor efficiency. Accordingly, there is a need for an improved stator sleeve that enables improved high-performance electric motors.
- the present invention fulfills these needs and provides other related advantages.
- An exemplary embodiment of the present invention is a method of manufacturing a stator sleeve, where the stator sleeve is configured to be assembled as part of a cooled electrical motor having a stator with a stationary conductor with winding and a rotor with a rotating permanent magnet, and where a coolant liquid is configured to cool the stationary conductor with winding.
- the method of manufacturing the stator sleeve comprises the steps of: providing a cylindrical mandrel; wrapping the cylindrical mandrel with a prepreg tape using automated fiber placement, the automated fiber placement being an in-situ consolidation; wherein the prepreg tape comprises a continuous fiber reinforcement within a polymer matrix; heating the prepreg tape during the automated fiber placement; cooling the wrapped prepreg tape by waiting an elapsed time; removing the cylindrical mandrel from the wrapped prepreg tape resulting in an unfinished cylindrically-shaped stator sleeve; trimming each end of the unfinished stator sleeve resulting in a trimmed stator sleeve having a first end opposite a second end; providing a first end ring and a second end ring, wherein the first and second end rings comprise a polymer; wherein the polymer of the first and second end rings are the same material as the polymer matrix of the prepreg tape; abutting the first and second end rings respectively against the first and second ends of the
- the prepreg tape wrapping of the continuous fiber reinforcement may be in a hoop-wrap orientation.
- the continuous fiber reinforcement may comprise S2 glass, IM7 carbon and/or boron.
- the polymer matrix may comprise PA, PET, PBT, POM, PPS, PEEK, PAEK and/or PEKK.
- the heating of the prepreg tape during the automated fiber placement may comprise hot gas torch convection heating, laser heating, flash lamp heating or infrared heating.
- the first and second end rings may comprise a carbon black filled polymer.
- the stator sleeve may be impermeable to coolant liquid.
- the prepreg tape may be unidirectional.
- the step of removing the cylindrical mandrel from the wrapped prepreg tape may comprise cooling the cylindrical mandrel allowing it to contract and shrink in size.
- the cooling of the cylindrical mandrel may comprise flowing a cooled liquid through the cylindrical mandrel.
- the step of removing the cylindrical mandrel from the wrapped prepreg tape may comprise dissolving the cylindrical mandrel in a liquid configured to dissolve the material of the cylindrical mandrel.
- the step of removing the cylindrical mandrel from the wrapped prepreg tape may comprise collapsing the cylindrical mandrel.
- An exemplary embodiment of the present invention is a method of manufacturing a stator sleeve, where the stator sleeve is configured to be assembled as part of a cooled electrical motor having a stator with a stationary conductor with winding and a rotor with a rotating permanent magnet, and where a coolant liquid is configured to cool the stationary conductor with winding.
- the method of manufacturing the stator sleeve comprises the steps of: providing a cylindrical mandrel; wrapping the cylindrical mandrel with a prepreg tape using automated fiber placement; wherein the prepreg tape comprises a continuous fiber reinforcement within a polymer matrix; heating the prepreg tape during the automated fiber placement; cooling the wrapped prepreg tape by waiting an elapsed time; removing the cylindrical mandrel from the wrapped prepreg tape resulting in an unfinished cylindrically-shaped stator sleeve; wherein the unfinished cylindrically-shaped stator sleeve is not fully consolidated; providing an outer mold defining an outside surface of a finished state sleeve; placing the unfinished cylindrically-shaped stator sleeve; inserting a conformable bladder into the composite sleeve; pressurizing the conformable bladder; heating an assembly, the assembly comprising the outer mold, the unfinished cylindrically-shaped stator sleeve and the conformable bladder, wherein the unfinished stator sleeve is fully
- FIGURE 1 illustrates a sectional view of an electric motor
- FIGURE 2A is an illustration of an in-situ consolidation (ISC) process
- FIGURE 2B is a simplified side view similar to the illustration of FIG. 2A showing an in-situ consolidation process
- FIGURE 3 is one embodiment of a cylindrical sleeve being removed from a cylindrical mandrel
- FIGURE 4A illustrates a slotted compaction roller
- FIGURE 4B illustrates axial features added to the stator sleeve
- FIGURE 5A illustrates a first end ring of the stator sleeve
- FIGURE 5B illustrates a second end ring of the stator sleeve
- FIGURE 6A is an enlarged sectional view showing the structure of FIG. 5A being attached to one end of the stator sleeve;
- FIGURE 6B is an enlarged sectional view showing the structure of FIG. 5B being attached to another end of the stator sleeve;
- FIGURE 7 is an isometric view illustrating the end rings being located in relation to the stator sleeve with the use of a cylindrical fixture tool
- FIGURE 8 is a front view of the structure of FIG. 7 now with a laser welding machine imparting laser energy to the end fitting and the stator sleeve;
- FIGURE 9 is a side view of FIG. 8;
- FIGURE 10 is an isometric view of a completed stator sleeve of the present invention.
- FIGURE 11 is a simplistic representation of another novel method of the present invention utilizing bladder molding
- FIGURE 12 is a perspective view of a simplistic bladder mold of the present invention.
- FIGURE 13 shows the mold of FIG. 12 now with a sleeve and bladder inserted therein;
- FIGURE 14 shows the structure of FIG. 13 with pressure applied to the bladder mold and heat added
- FIGURE 15 shows the cooling and depressurization of the structure of FIG. 14.
- FIGURE 16 shows the resulting sleeve that can be trimmed and attached to end rings as previously described herein.
- oven-curable resins systems that can be consolidated to acceptable void contents without an autoclave
- ATL automated tape laying
- AFP automated fiber placement
- these systems are equipped with rollers that compress the material immediately after placement to ensure adhesion and avoid formation of air pockets that would create voids
- consolidation of the laminate still typically occurs in the second step of what remains a two-step process, under a vacuum bag, in an autoclave, oven or other heating device, such as a heated tool.
- This state of the art persists, at least in part, because today’s certified aerocomposite materials are predominately thermosetbased.
- thermoplastic rather than thermoset matrices.
- Thermoplastic materials are liquid when heated to melt temperature and solidify when cooled, but do not need to crosslink like thermosets.
- Consolidation of a thermoplastic composite (TPC) can be accomplished by quickly heating the impregnated reinforcement to the melt temperature of the thermoplastic polymer matrix and then applying pressure as the tape or tows are placed onto a tool and/or a previously placed laminate.
- TPC thermoplastic composite
- ISC True in-situ consolidation
- thermosets closer to 400°C vs. 180°C/350°F for primary structures — their cycle times are much shorter because TPCs require only cooling rather than crosslinking.
- Thermoplastics also are inherently tough and need no special formulation to provide the fatigue-resistance necessary for aircraft applications. Further, because thermoplastics can be reheated and reformed, they can be welded (a cost-saving, fastener-free assembly option).
- TPCs have emerged as frontrunners.
- TPCs have been the material of choice.
- the inventors of the present invention have much experience in the aerospace industry and understand the automation of the manufacturing process for thermoplastics by automated tape placement (ATP) can achieve an increased production rate, reduction in labor cost and improved geometric repeatability when compared to conventional hand layup.
- the inventors have now turned their attention to improving the electrical motor which is used in a wide range of high-performance applications.
- the present invention improves upon the prior art by the following: incorporating end features to facilitate connection to the stator, fluid sealing, and ease of assembly; optionally incorporating axial features on the outer diameter for ease of assembly, coolant flow channels, stator winding spacers, and stiffening members; employing thermoplastic polymer composites to allow the entire structure to be cobonded together, provide superior cool ant/sol vent resistance, allow high-rate manufacturing, allow recycling at end of life; providing innovative manufacturing methods to facilitate manufacturing of an optimized stator sleeve; and manufacturing a complex stator sleeve assembly efficiently at high rates.
- FIG. 1 is an enlarged sectional view of a representation of an internal permanent magnet motors (IPM) motor.
- FIG. 1 illustrates a sectional view of an electric motor 10 having an outside housing 11 , a stator 12, a winding 13, a rotor 14, a rotor sleeve 15, a stator sleeve 16 and a permanent magnet 17. It is understood that some electric motors may include a stator sleeve but not have a rotor sleeve.
- the stator sleeve 16 of the present invention is ideally made as a thin wall. This results in a smaller gap between the stator and rotor which improves efficiency.
- the stator sleeve has high strength and stiffness. This allows a thinner wall and minimum deformation of the sleeve under use.
- the stator sleeve has no permeability to coolant, thus fluid leaks through the material of the stator sleeve will not become a problem.
- the stator sleeve has low magnetic permeability, which then does not disturb the magnetic field between the rotor and stator.
- the stator sleeve also has low electrical conductivity, which leads to low electrical loss due to eddy currents.
- the stator sleeve incorporates features such as: end fittings for connecting to the stator and sealing purposes; structures for coolant flow channels, stiffening, integration with stator windings, etc.; and mounting structures for ease of assembly, alignment, etc.
- liquid permeability of the stator of the present invention is zero, as any leakage of coolant would result in failure of the motor.
- the carbon fibers, glass fibers and/or the polymer composites of the present invention do not contribute to magnetic losses in the electric motor. More specifically, glass fibers such as S2 glass are excellent electrical insulators as are polymers and do not contribute to electrical losses in electric motors. Carbon fibers are electrically conductive along the length of the fiber (on the order of 2 to 20 micro ohm-m). However, continuous carbon fiber composites as used in the present invention are insulated from each other by the polymer matrix resulting in no conductive paths for eddy current losses.
- the present invention involves innovative materials and manufacturing methods to improve the state of the art for stator sleeves.
- the basic approach is to use advanced thermoplastic composite materials with innovative manufacturing methods to manufacture the improved stator structure.
- a general approach of the present invention is to first manufacture the tube body using a process such as automated fiber placement (AFP), which can be in- situ consolidation (ISC), to produce the structure for the cylindrical sleeve. Then, one can incorporate any additional features such as end fittings and/or axial structures.
- AFP automated fiber placement
- ISC in- situ consolidation
- the present invention starts with making a composite sleeve.
- Continuous fiber reinforcements such as S2 glass, IM7 carbon, boron or any other suitable fiber may be employed. Higher strength and stiffness of continuous fibers are preferred.
- a polymer matrix is employed to hold the fibers in place in the stator sleeve, protect the fibers, transfer structural loads between fibers, and prevent permeation of the coolant.
- Thermoplastic polymers are preferred due to the ability to thermally co-bond to other features, coolant resistance, and recyclability. Suitable polymers include but are not limited to PA, PET, PBT, POM, PPS, PEEK, PAEK, PEKK depending on the use temperature and other factors.
- FIGURE 2A is a picture of an in-situ consolidation (ISC) process.
- FIGURE 2B is a simplified side view similar to the illustration of FIG. 2A showing an in-situ consolidation process.
- the incoming tape 20 is first directed between one or a multitude of tape feed roller 21 .
- the tape is ultimately laid down upon a tool 22 where a multitude of plies 23 are disposed.
- the direction of travel is noted by arrow 26. This means that either the tool is moving one direction, the rollers are moving the other direction or a combination of both.
- a hot gas torch convection heater 27 is used to heat the prepreg tape 20. Once enough ply layers are laid down, a tape cutter 28 can cut the tape.
- thermoplastic composites such as, but not limited to S2/PEEK are employed using existing state of the art AFP and ISC technology to manufacture the composite cylinder.
- Unidirectional composite prepreg tape is preferred along with a primarily hoop-wrap orientation for high compression strength. This means the continuous length of the fiber is around the circumference of the cylinder.
- the ISC process is shown in FIG. 2A making a cylinder along with a graphic illustration of the process in FIG. 2B.
- the illustration shows hot gas torch (HGT) heating technology however laser, flash lamp, IR heaters or other suitable heating methods may be employed just as well.
- HAT hot gas torch
- FIGURE 3 is one embodiment of a cylindrical sleeve 18 being removed from the cylindrical mandrel 22.
- collapsible or dissolvable mandrels may be used. Dissolvable or collapsible mandrels may be used but are generally not needed with the ISC process. PLA (polylactic acid), eutectic salts or any other suitable dissolvable mandrels may be used in cases where extraction is not otherwise possible.
- FIGURE 4A illustrates a slotted compaction roller 30.
- the slotted roller is used to form the axial ribs 40.
- the slotted roller rolls along the longitudinal direction of the sleeve 18 where the curvature 31 matches the outer diameter of the sleeve.
- annular gap 32 that forms the axial ribs 40.
- the axial ribs 40 on the outer diameter of the stator sleeve 18 are formed using an in-situ process where one melts a neat polymer onto the outer diameter of the sleeve and the roller will form the square cross-sectional profile utilizing the annular gap 32. Heat will be applied to the neat material and the outer diameter of the stator sleeve to melt bond them together. The roller also applies the required compaction force to push the neat material against the sleeve to enable intimate contact for molecular chain entanglement.
- FIGURE 4B illustrates that axial features 40 (such as stator slots) may be added using the slotted or other shape groove in the compaction roller along with additional composite or polymer filament with the ISC process.
- axial features 40 such as stator slots
- stator slots may be filled with an insulator such as PEEK polymer inserts for electrical insulation. Such slot fillers can be advantageously incorporated into the stator sleeve for the added benefit of greater bending stiffness.
- a trimmer operation may be needed to trim each end of the unfinished stator sleeve 18 resulting in a trimmed stator sleeve having a first end 18a opposite a second end 18b.
- FIGURS 5A and 5B show two representative end rings 51 and 52 that may be attached to the stator sleeve.
- FIGURE 6A is an enlarged sectional view showing the structure (end ring 51) of FIG. 5A being attached to one end 18a of the stator sleeve 18.
- FIGURE 6B is an enlarged sectional view showing the structure (end ring 52) of FIG. 5B being attached to the other end 18b of the stator sleeve 18.
- FIGURE 7 now shows the end rings 51 , 52 being located in relation to the stator sleeve 18 with the use of a cylindrical fixture tool 60.
- the fixture tool helps align and hold in place the end rings relative to the stator sleeve.
- the tool 60 has a larger diameter portion 61 that abuts the end ring 51 when the end ring 51 is first slid on.
- the stator sleeve can be slid on.
- the end ring 51 can be slid onto the tool 60. In this manner, all three parts are held together in abutting relationship.
- the end rings may be bonded to the sleeve using a laser welding machine 70 or other as shown.
- FIGURE 8 is a front view of the structure of FIG. 7 now with a laser welding machine 70 imparting laser energy 71 to the end fitting and the stator sleeve.
- the laser energy 71 can be seen being imparted onto the stator sleeve 18 and the end ring 52 and permanently connecting them together.
- FIGURE 9 illustrates the side view of laser welding of the end fitting as depicted in FIG. 8.
- the laser beam 71 is shown being directed towards the end fitting and roller.
- a roller 72 helps facilitate the connection of the end rings and stator sleeve.
- the roller applies compaction pressure to the sleeve and the ring. In order to melt bond plastic together one needs to apply both heat and pressure.
- the laser energy melts the surfaces and the roller applies the pressure needed to bond the two parts together. It is understood by those skilled in the art that other techniques could permanently connect the end rings to the stator sleeve, such as melt bonding or friction welding.
- stator sleeve would normally have a tan color indicating the natural color of S2/PEEK composites and the end fittings would be darker (such as black) indicating PEEK that is filled with an IR absorbing materials such as carbon black.
- the S2/PEEK is transparent to the IR laser whereas the carbon black filled PEEK absorbs the IR laser energy thereby heating the carbon black filled PEEK surface that enables melt bonding it to the S2/PEEK sleeve.
- FIGURE 10 illustrates the completed stator sleeve assembly 16.
- One advantage of the present invention is that the polymer used to manufacture the end rings and the polymer used in the polymer matrix of the prepreg can be the same material. This then allows a good connection between the stator sleeve and the end rings whether it is laser welded or melt bonded.
- FIGURE 11 illustrates an alternative form of manufacturing the stator sleeve of the present invention utilizing bladder molding.
- Bladder molding is an alternative consolidation approach. The idea is to start with a composite sleeve 80 that doesn’t need to be fully consolidated. Such a sleeve could be partially ISC (in-situ consolidation) or a braided sleeve for example.
- the manufacturing process may include the following steps. First, one would fabricate a composite sleeve preform 80. Step A shows inserting a conformable bladder 81 into the composite sleeve 80. Then insert the sleeve and the bladder into a mold 82, 83. Step B shows adding pressurize 84 to the bladder forcing the sleeve to take the shape of the molds 82 and 83.
- Step C shows heating 85 the assembly to above the polymer melt temperature. This heat would be while being pressurized. Then one would cool 86 the assembly and remove the consolidated part and bladder from the mold as shown in Step D. While FIG. 11 is for illustration only as the shape is simple cavity, it is understood by those skilled in the art that the shape could be a cylinder or any other shape.
- FIGURES 12-16 are perspective views of a better depiction of the process described in FIG. 11.
- FIGURE 12 is a perspective view of a very simple mold 82 and 83. It is a two-part mold but could comprise any number of parts and sections. The inside of the mold defines a surface 87 that eventually defines the outside surface of the sleeve 80 once the pressurization and heating are finished.
- FIG. 13 illustrates adding the sleeve 80 and inserting the conformable bladder 81 inside the sleeve.
- FIG. 14 illustrates adding the top mold 83 and then adding pressure 84 to the conformable bladder 81 and adding heat 85. After enough time to finalize the formation of the sleeve, FIG.
- FIG. 15 illustrates that one could cool 86 the assembly and depressurize the bladder 81.
- FIG. 16 illustrates that the top mold 83 can be removed and then the bladder removed. The sleeve 80 can then be removed. It is understood that the sleeve 80 can then be trimmed and end rings added as previously described. [0081 ] There are advantages of this approach, which are now described.
- the internal pressure and resulting expansion tend to remove wrinkles in the fibers thereby improving compressive and tensile strength.
- the process fully consolidates the laminate, reduce porosity, and eliminate permeation. External features such as ribs, end rings, or other features can be formed provided that excess polymer or filled polymer is available.
- the bladder may be made of different materials depending on temperature, expansion, and other factors.
- the bladder may be made as an elastomer such as silicone, a metal such as aluminum or a higher melt temperature polymer such as polyimide.
- the bladder may be energized in different ways.
- the bladder may be energized by internal pressure, such as through pneumatic or pneumatic pressure.
- the bladder may be energized by an applied force, through the use of various structures, clamps and/or weights.
- the structure may be energized by utilizing a material of a higher coefficient of thermal expansion (CTE) in comparison to the surrounding structures.
- CTE coefficient of thermal expansion
- a fiberglass/PA composite cylinder could be bladder molded using a silicone bladder pressurized by air.
- a solid cylinder of silicone could be used in place of the bladder where the high CTE of the silicone (assuming a lower CTE mold such as steel) would apply pressure at the melt temperature of PA.
- the silicone bladder would degrade at the higher temperatures needed to melt the PEEK (> 343C) so a higher temperature bladder such a PI or aluminum would be required.
- a solid cylinder of aluminum could be used in place of the bladder where the high CTE of the aluminum (assuming a lower CTE mold such as steel) would apply pressure at the melt temperature of PEEK.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
L'invention porte sur un procédé de fabrication d'un manchon de stator commençant par enrouler un mandrin cylindrique avec une bande de préimprégné chauffée à l'aide d'un placement de fibre automatisé. La bande de préimprégné a un renforcement de fibre continue à l'intérieur d'une matrice polymère. Ensuite, refroidir et retirer le mandrin cylindrique de la bande de préimprégné enroulée, ce qui permet d'obtenir un manchon de stator de forme cylindrique non fini. Chaque extrémité du manchon de stator non fini est rognée. Ensuite, viennent en butée une première et une seconde bague d'extrémité respectivement contre une première et une seconde extrémité du manchon de stator rogné à l'aide d'un outil de fixation cylindrique. Les première et seconde bagues d'extrémité sont du même matériau que la matrice polymère de la bande de préimprégné. Enfin, souder au laser ou lier par fusion les première et seconde bagues aux première et seconde extrémités du manchon de stator rogné.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US202263365308P | 2022-05-25 | 2022-05-25 | |
US63/365,308 | 2022-05-25 | ||
US18/201,037 | 2023-05-23 | ||
US18/201,037 US20230387768A1 (en) | 2022-05-25 | 2023-05-23 | Composite stator sleeve |
Publications (2)
Publication Number | Publication Date |
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WO2023227662A2 true WO2023227662A2 (fr) | 2023-11-30 |
WO2023227662A3 WO2023227662A3 (fr) | 2024-02-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2023/063914 WO2023227662A2 (fr) | 2022-05-25 | 2023-05-24 | Procédé de fabrication d'un manchon de stator composite |
Country Status (1)
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WO (1) | WO2023227662A2 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030193260A1 (en) | 2002-04-16 | 2003-10-16 | Reiter Frederick B. | Composite power metal stator sleeve |
US8378550B2 (en) | 2010-09-10 | 2013-02-19 | Remy Technologies, L.L.C. | Electric machine including a stator having a stator sleeve and method of cooling a stator |
DE102020119110A1 (de) | 2020-07-21 | 2022-01-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Spaltrohr zur Abdichtung eines Rotorraumes von einem Statorraum einer elektrischen Maschine, Stator für eine elektrische Maschine, elektrische Maschine, Kraftfahrzeug, Verfahren zur Herstellung eines Spaltrohres |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5334870A (en) * | 1976-09-10 | 1978-03-31 | Olympic Fishing Tackles Co | Method of manufacture of hollow product consisted of resin material reinforced with fiber |
JP5150743B2 (ja) * | 2011-03-23 | 2013-02-27 | 川崎重工業株式会社 | キャンド型の回転電機 |
US10800113B2 (en) * | 2016-12-04 | 2020-10-13 | Adc Acquisition Company | Bonding for additively manufactured thermoplastic composite structures |
DE102020117314A1 (de) * | 2020-07-01 | 2022-01-05 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Spaltrohr zur Abdichtung eines Rotorraumes von einem Statorraum einer elektrischen Maschine, elektrische Maschine, Kraftfahrzeug, Verfahren zur Herstellung eines Spaltrohres und einer elektrischen Maschine |
DE102020126408A1 (de) * | 2020-10-08 | 2022-04-14 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zur Herstellung eines Spaltrohres zur Abdichtung eines Rotorraumes von einem Statorraum einer elektrischen Maschine, Spaltrohr, elektrische Maschine, Verfahren zur Herstellung einer elektrischen Maschine, Kraftfahrzeug |
-
2023
- 2023-05-24 WO PCT/EP2023/063914 patent/WO2023227662A2/fr unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030193260A1 (en) | 2002-04-16 | 2003-10-16 | Reiter Frederick B. | Composite power metal stator sleeve |
US8378550B2 (en) | 2010-09-10 | 2013-02-19 | Remy Technologies, L.L.C. | Electric machine including a stator having a stator sleeve and method of cooling a stator |
DE102020119110A1 (de) | 2020-07-21 | 2022-01-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Spaltrohr zur Abdichtung eines Rotorraumes von einem Statorraum einer elektrischen Maschine, Stator für eine elektrische Maschine, elektrische Maschine, Kraftfahrzeug, Verfahren zur Herstellung eines Spaltrohres |
Also Published As
Publication number | Publication date |
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WO2023227662A3 (fr) | 2024-02-01 |
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