WO2023052116A1 - Machine électrique et procédé de mise en place d'au moins un conducteur électrique composite dans au moins une rainure d'un stator ou d'un rotor pour une machine électrique - Google Patents

Machine électrique et procédé de mise en place d'au moins un conducteur électrique composite dans au moins une rainure d'un stator ou d'un rotor pour une machine électrique Download PDF

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Publication number
WO2023052116A1
WO2023052116A1 PCT/EP2022/075290 EP2022075290W WO2023052116A1 WO 2023052116 A1 WO2023052116 A1 WO 2023052116A1 EP 2022075290 W EP2022075290 W EP 2022075290W WO 2023052116 A1 WO2023052116 A1 WO 2023052116A1
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WO
WIPO (PCT)
Prior art keywords
composite
conductor elements
thermoset
conductor
linked
Prior art date
Application number
PCT/EP2022/075290
Other languages
German (de)
English (en)
Inventor
Uwe Vollmer
Martin Koehne
Matthias Musialek
Gerrit Huelder
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2023052116A1 publication Critical patent/WO2023052116A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/02—Windings characterised by the conductor material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
    • 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
    • H02K15/10—Applying solid insulation to windings, stators or rotors
    • H02K15/105—Applying solid insulation to windings, stators or rotors to the windings
    • 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
    • H02K3/00—Details of windings
    • H02K3/30—Windings characterised by the insulating material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Definitions

  • the invention relates to a method for inserting at least one electrical conductor assembly into at least one slot of a stator or rotor used for an electrical machine, the electrical conductor assembly having a plurality of conductor elements based on carbon nanotubes and/or graphene with insulation based on at least one duroplast . Furthermore, the invention relates to an electrical machine with a stator or a rotor, wherein at least one electrical conductor assembly is introduced into at least one slot of the stator or rotor using such a method.
  • the invention relates to a method for fixing the end winding so that it is present as a rigid composite in the required position after full thermal crosslinking of the thermoset.
  • Alternative electrical conductor materials are based on carbon nanotubes and/or graphene plates.
  • the electrical conductivity of carbon nanotubes and graphene sheets exceeds the conductivity of copper.
  • the macroscopic conductor materials based on the molecular building blocks (carbon nanotubes and/or graphene plates), which i.a. as films, tapes and yarns, copper and aluminum are still inferior in terms of electrical conductivity and have therefore not been used to date.
  • these alternative electrical conductor materials are characterized by their flexural slack Conductor materials allow their cross section to change according to the effect of external forces.
  • the packing density can be increased to such an extent that there are hardly any cavities left. This is not possible for copper conductors because of their radial stiffness.
  • the so-called plug-in or bar winding which consists of one or more solid copper conductors, is used with copper conductors instead of many individual conductors.
  • Graphene films or carbon nanotube films can be produced as a conductor material by various methods.
  • Conductor materials made from carbon nanotubes (CNT) can be produced as follows: WO 2007/015710 A2 shows the production of CNT ribbons from so-called CNT forests.
  • the tapes are electrically conductive and are characterized by high elongation at break and high tensile strength.
  • An alternative manufacturing process for CNT tapes is described in US Pat. No. 8,999,285 B2. Here the production takes place through the synthesis of a CNT aerogel. This is processed into a ribbon as it leaves the reactor.
  • Another manufacturing method for tapes based on carbon nanotubes is disclosed in WO 2013/034672.
  • the carbon nanotubes are dispersed in a super acid and then processed into fibers or ribbons by wet spinning.
  • Conductor materials based on graphene can be produced as follows, with graphite being the only raw material used for commercially interesting production variants.
  • production can take place, for example, as follows:
  • graphite powder is wet-chemically intercalated using the so-called Hummers method and oxidized to form graphene oxide.
  • the purified graphene oxide dispersion is then processed into a film and subsequently reduced into a graphene film by heat treatment.
  • the graphene film is produced directly from an aqueous dispersion.
  • the dispersant that made the aqueous dispersion possible is removed in a further step.
  • the production takes place by means of a spinneret, the geometry of which ensures that the graphene platelets are aligned parallel to the planes of the film.
  • Fibers or yarns can be produced as follows: The production of fibers from graphene is disclosed in US Pat. No. 8,999,212 B2. Graphene is obtained by one-sided axial cutting of carbon nanotubes. After that, the graphene is dispersed in a superacid and then processed into fibers by wet spinning. Particularly preferred for the production of graphene fibers is the production of graphene oxide, which is obtained from graphite by wet-chemical oxidation, such as. B. the Hummers method is produced. Since this manufacturing route uses graphite as a raw material, the raw material costs are 1-2 orders of magnitude lower compared to the above process. Such manufacturing methods are disclosed in CN 105603581A, CN 105544016A and CN 105544017A. At the end of the manufacturing process, thermal treatment at temperatures of up to 3000°C is necessary to increase the electrical conductivity.
  • Graphene-based conductors such as films, fibers and yarns, can be insulated, as in WO 18177767 A1, by fluorination of the surface layer, which turns into an insulator and thereby electrically shields the film.
  • electrical insulation by applying polymer is also possible, as is shown in WO13051761A1.
  • DE102019220214A1 shows how insulation can be produced by layers of boron nitride.
  • Such electrical conductors can be used in electrical motors, as is shown in WO1 8233897 A1 or WO18158003.
  • Endless fibers are obtained by the spinning processes presented above. These endless fibers are processed into yarns. Techniques such as twisting or braiding can be used. The aim of all these processes is to combine the endless fibers into one unit, the yarn. This enables further processing, such as covering with an insulator or winding as an electrical conductor in a rotor.
  • US Pat. No. 9,520,213 B2 discloses the coating of a conductive yarn made of carbon nanotubes or graphene with a duroplastic or an epoxy resin. Disclosure of Invention
  • an overhang of a conductor assembly based on yarns made of graphene and/or carbon nanotubes, also referred to as a winding head to be stiffened after completion of the winding, so that it no longer moves around the conductor assembly during operation due to the magnetic fields that are created or is deformed.
  • a composite of conductor elements can be created that has been coated with partially cross-linked duroplast.
  • This composite which is still soft, can be introduced into the engine as an electrical conductor and then harden there, so that the flexible conductor elements are then transformed into a rigid composite.
  • the insulation is preferably not only to be found on the outside of the composite, but also in the composite between the conductor elements that are encased with the duroplast. This is advantageous because, after full thermal crosslinking, it not only creates electrical insulation from the rotor or stator, but also electrical insulation of the conductor elements from one another, which is highly effective against current displacement effects, and a matrix that gives the composite structural strength gives.
  • the insulation is designed in such a way that the electrical conductor assembly is designed to be rigid. This prevents deformation or movement, particularly at the end winding, during operation.
  • thermoset has at least one thermolatent catalyst, in particular at least one adduct of boron trifluoride with amines, more particularly BF3 monoethylamine, and/or at least one quaternary phosphonium compound and/or a dicyandiamide, is admixed. This can support and/or accelerate complete crosslinking.
  • the individual conductor elements are encased in the duroplast by means of an immersion baud. In this way, the conductor elements can be advantageously encased in a simple manner in the respective application.
  • the individual conductor elements are encased with the duroplast by a pultrusion process.
  • the duroplast can be applied with good adhesion and/or thinly.
  • a low thermal resistance can also be realized as a result.
  • the conductor element is designed as a yarn, it is advantageous that only the yarn is insulated or coated and that there is no infiltration through the insulation material in the yarn, which can be achieved by the pultrusion process.
  • the duroplast is formed from a resin system which has at least one resin based on tetraglycidyldiaminodiphenylmethane and/or an epoxy resin of the novolac type and a hardener based on microencapsulated imidazole and/or diaminodiphenylsulfone.
  • the system can still be sufficiently low-viscous at a certain mixed viscosity, for example 750 mPa*s, at an advantageous processing temperature, for example 25°C.
  • the composite of the conductor elements encased with the thermoset in the partially crosslinked state is encased in a silicone tube and that the composite of the conductor elements encased with the thermoset in the partially crosslinked state, encased with the silicone tube, is inserted into the at least one groove.
  • the composite can be further stabilized, in particular for insertion into the groove.
  • the electric machine in particular the electric drive machine for motor vehicles, advantageously comprises at least one electrical conductor assembly which is inserted in at least one slot of a stator or rotor, the electrical conductor assembly having a plurality of conductor elements based on carbon nanotubes and/or graphene and a conductor element based on at least one Has thermoset based insulation. Since the conductor element can be encased in duroplast, a matrix then forms from the duroplast in the conductor assembly, which matrix holds the conductor assembly together.
  • FIG. 1 shows a conductor element 5 sheathed with a partially cross-linked duroplast, which are fibers or yarns with a small diameter, in a schematic sectional view for explaining a method according to an embodiment of the invention
  • FIG. 2 shows the conductor elements shown in FIG. 1 and encased with a partially cross-linked duroplast, corresponding to a modified embodiment
  • FIG. 3 shows a composite, configured as a yarn, made up of a plurality of conductor elements shown in FIG. 1 in a schematic sectional representation for explaining the method according to the exemplary embodiment
  • FIG. 4 shows the composite shown in FIG. 3 according to the modified embodiment
  • FIG. 5 shows the composite shown in FIG. 3, which is additionally encased with an elastomer tube, in a schematic sectional view to explain the method according to the exemplary embodiment
  • FIG. 6 shows the composite shown in FIG. 5, which is additionally encased with an elastomer tube, corresponding to the modified embodiment and
  • FIG. 7 shows a partial, schematic sectional view of a slot of a stator of an electrical machine, into which the composite shown in FIG. 5 and encased with the elastomer tube is inserted as an electrical conductor composite in order to form a winding of the stator.
  • FIGS. 1, 3, 5 and 7. 2, 4 and 6 show a modified embodiment.
  • the conductor element 5 can be designed as a continuous fiber 5 or yarn 5 .
  • the conductor element 5 is based on carbon nanotubes and/or graphene.
  • the electrical conductor assembly 1 (FIG. 6) then has a plurality of such conductor elements 5, with finally an insulation 7 (FIG. 7) based on the duroplastic 6 being formed.
  • conductor elements 5, which are yarns with a small cross-section and which consist, for example, of several fibers can also be encased with the partially crosslinked duroplast 6.
  • the fibers and such yarns with a small cross-section are possible configurations for a conductor element 5 based on carbon nanotubes and/or graphene.
  • thermoset 6 is only partially crosslinked after the encapsulation.
  • the cross section of the conductor elements 5 is round.
  • the individual conductor elements 5 can be encased with the duroplastic 6 by means of an immersion bath, a spraying process or a pultrusion process. Depending on the design of the process, the duroplast e can be applied in the liquid state.
  • FIG. 2 shows the conductor element 5 shown in FIG. 1, covered with a partially cross-linked duroplast 6, according to a modified embodiment.
  • the cross section of the conductor element 5 is star-shaped.
  • Yarns can also be produced with almost any cross-section, e.g. by braiding, weaving or moulding.
  • FIG. 3 shows a composite 8 of several conductor elements 5 shown in FIG. 1 in a schematic sectional view to explain the method according to the exemplary embodiment.
  • the composite 8 can be designed as a yarn 8 .
  • the conductor elements 5 are encased in the partially crosslinked state with the duroplast 6 and connected to form the composite 8 .
  • the conductor elements 5 are limp and deform during the production of the yarn 8 . It is particularly advantageous if this takes place before twisting, weaving or braiding, as is also described with reference to FIG. 1 or FIG. It is even more advantageous if the continuous fibers 5 or yarns with a smaller cross section are processed directly into a conductor assembly 1 in which they are guided parallel to the longitudinal axis of the yarn.
  • the assembly 8 is also easier to deform, which is an advantage for the processability when producing the winding.
  • Such a composite 8 can thus be produced, for example, by coating the yarns with a smaller cross section or endless fibers 5 with the crosslinkable duroplast 6 by means of an immersion bath or by spraying. This composite 8 can then be passed through a conical hole. As a result, the continuous fibers 5 are compacted into a yarn 8 and the thermoset 6 is partially crosslinked, so that the composite 8 is still deformable.
  • the yarn 8 made of parallel endless fibers 5 can have a cross section with a round, oval, triangular, square, rectangular, trapezoidal or star-shaped geometry, for example.
  • FIG. 4 shows the composite 8 shown in FIG. 3 according to the modified embodiment, the cross sections of the individual conductor elements 5 being star-shaped.
  • FIG. 5 shows the composite 8 shown in FIG.
  • the composite 8 has the duroplast e in the partially crosslinked state.
  • the elastomer hose 9 can be a silicone hose 9 .
  • the composite 8 encased with the elastomer tube 9 can then be inserted into the groove 2 in this form.
  • the elastomer hose 9 can also be omitted.
  • the composite 8 encased with the elastomeric tube 9 can be produced by hose extrusion with simultaneous continuous feeding of the composite 8 into the elastomeric tube 9 being formed. This ensures that the composite 8 does not disintegrate, improves the workability during winding and also prevents the composite 8 from sticking to itself when stored on a spool or that the thermoset on the surface sticks to the thermoset of the next Location networked.
  • the encasing of the composite 8 with a silicone hose 9 is particularly advantageous. This can be produced by hose extrusion with simultaneous continuous feeding of the composite 8 into the extruded silicone hose 9 .
  • FIG. 6 shows the composite 8 shown in FIG. 5, which is additionally encased with an elastomer tube 9, corresponding to the modified embodiment.
  • FIG. 7 shows a partial, schematic sectional view of the slot 2 of the stator 3 of the electrical machine 4.
  • the composite 8 shown in FIG. The representation is to be understood as an example.
  • other conductor assemblies corresponding to the conductor assembly 1 can also be inserted.
  • the Conductor assembly 1 can also be inserted in several windings.
  • a winding of the stator 3 can be formed.
  • the yarns 8 or yarn bundles 8 can be pressed in or wound and then, if there is no winding tension, depending on the installation situation, optionally heated to 120° C. under mechanical pressure and cured.
  • the yarns 8 nestle against the groove 2 without a gap. Insulating paper is not necessary if the dielectric strength of the elastomer or silicone hose 9 is sufficient for the potential difference that is present.
  • the composite 8 is made up of the conductor element 5 encased with the duroplast 6 in the partially crosslinked state, the fibers or yarns with a small diameter, in which at least one groove 2 is inserted, heat treatment then takes place.
  • the duroplast 6, which is in the partially crosslinked state is thermally fully crosslinked.
  • the insulation 7 of the electrical conductor assembly 1 is then formed.
  • the electrical conductor assembly 1 then has a plurality of conductor elements 5 based on carbon nanotubes and/or graphene and an insulation 7 based on the duroplast e.
  • the insulation 7 can then be designed in such a way that the electrical conductor assembly 1 is designed to be rigid.
  • the conductor is designed to be rigid if the crosslinking of the insulation of the conductor elements with the insulation of adjacent conductor elements during full thermal crosslinking leads to a rigid composite.
  • thermolatent catalyst can be added to the duroplast 6, which supports and accelerates the full crosslinking during the heat treatment.
  • an adduct of boron trifluoride with amines, in particular BFs monoethylamine, and/or at least one quaternary phosphonium compound and/or a dicyandiamide can be admixed as a catalyst.
  • thermoset 6 may be formed from a resin system comprising a tetraglycidyldiaminodiphenylmethane-based resin and a novolac-type epoxy resin and microencapsulated imidazole and diaminodiphenylsulfone-based hardeners.
  • composition A resin system in parts by weight can be given as follows, where HX3722 and DDS are the hardeners: Ep604: 50, Ep1032: 50, HX3722: 25 and DDS: 20.
  • the chemical composition is:
  • Ep604 Tetraglycidyldiaminodiphenylmethane, Japan Epoxy Resins Co., Ltd.;
  • Ep1032 epoxy resin of the novolac type (see US 2003/0135011 A1, formula (I));
  • HX3722 Microencapsulated Imidazole, Asahi-Ciba Co., Ltd.; and DDS: diaminodiphenylsulfone, Wakayama Seika Kogyo Co., Ltd.
  • this system With its mixed viscosity, this system is sufficiently low in viscosity.
  • a mixed viscosity can vary, with a mixed viscosity of around 750 mPas at 25° C., for example, still being considered to be sufficiently low in viscosity.
  • the components of the epoxy resin system mentioned above are heated to 25 °C and then mixed in the specified ratio.
  • the mixture is placed in a container. This has a double jacket by means of which the mixture is tempered to 25°C.
  • There is a deflection roller in the container which is positioned in such a way that the endless fibers 5 can be guided continuously through the epoxy resin system in the container. A continuous immersion bath is thus realized.
  • the continuous fibers 5 emerge from the immersion bath, they are drawn through a device, the first part of which consists of a metal segment which has a conical hole 5 cm long with a circular cross-section.
  • the diameter of the hole is 5 mm at the beginning and 1.5 mm at the end.
  • This first metal segment is cooled to 20°C.
  • Another metal segment follows the first metal segment. This is thermally separated from the first metal segment by an insulating layer.
  • the hole in the second metal segment is 50 cm long and has a circular cross section with a diameter of 1.5 mm. This second metal segment is heated to keep it at a temperature of 80°C.
  • the continuous fibers 5 When the continuous fibers 5 are pulled through these two metal segments, they are compacted by the cone in the first metal segment and by the cone in the second metal segment thermal partial crosslinking of the epoxy resin system formed into a yarn 8, in which the continuous fibers 5 are arranged parallel to one another.
  • the dwell time of the yarn in the second metal segment is 2 s.
  • the yarn 8 is then encased in a silicone hose 9 by coextrusion.
  • Post-crosslinking can be suppressed in this composite for weeks by storage at temperatures ⁇ 0°C after production, thus ensuring adequate deformability and thus processability.
  • the winding has been made from the composite, it must be thermally post-treated so that the maximum temperature resistance of 180°C is achieved.
  • the component is heat-treated.
  • the epoxy resin system is fully crosslinked through temperature stages of 30 minutes at 100°C and 30 minutes at 145°C and 30 minutes at 180°C. The composite is then so stiff that it can no longer be deformed by magnetic forces during operation
  • the conductor elements 8 can be continuously coated with curable resin.
  • the conductor elements 8, which lie in the groove, are bonded to one another by the resin after the heat treatment. This differs from casting with a resin.
  • cavities between the conductor elements cannot be completely avoided both in the case of casting and in the case of the proposed method. If the proposed method is used, a conductor element is usually always coated with resin in the area of the cavities, while the conductor elements adjoining the cavities are not partially coated with resin during casting
  • the insulation may be made using a pultrusion process, as described below.
  • Conductor elements 5 in the form of yarns and tapes based on carbon nanotubes (CNT) or graphene are conductor materials that have high tensile strength in the axial direction but at the same time are pliable in the radial direction.
  • the electrical insulation layer should be as flexible and adhesive as possible be that even with very small bending radii the insulation layer does not tear or become detached.
  • the Insulation layer should be as thin as possible to achieve low thermal resistance. The insulation layer is therefore applied as evenly as possible and thinly in one process step with short process times.
  • the CNT yarn or other electrically conductive fibers 5 can be insulated by means of pultrusion. This is particularly advantageous if a yarn with a smaller cross section is used instead of a fiber 5 . It is important here that only the yarn is insulated or coated and that the insulation material does not infiltrate the yarn. Furthermore, the viscosity of the material can be fine-tuned to the process in order to enable coating or insulation on the one hand and to prevent infiltration on the other. Infiltration would reduce the electrical conductivity in the yarn itself. It is also possible to specify how high the maximum porosity of the yarn/tape should be so that the reaction only takes place on the surface and not in the core of the yarn/tape. A reaction in the core is to be avoided as this can impair the electrical conductivity. It is advantageous that a particularly thin, temperature-resistant and highly elastic insulation layer is produced by the pultrusion. The process is easily scalable.
  • thermoplastic materials especially liquid silicones
  • thermoplastic elastomers can be applied to the yarn as an insulator by pultrusion.
  • the yarns can also be lined up next to each other and still be insulated individually. This creates a wide conductor track that can be easily wound around a coil. Other arrangements, for example one on top of the other, are also possible and still easy to wind due to the high degree of bending of the yarn.
  • the yarns can be fed crosswise into the tool and covered with the insulating layer. It is particularly advantageous for the electrical conductivity that the fiber is not infiltrated with an insulator. To do this, the fiber can be heavily cooled to increase the viscosity of the insulator on the fiber and thereby prevent infiltration. Another option is to heat the fiber with electricity and thus ensure rapid hardening on the fiber surface.
  • the invention is not limited to the exemplary embodiments described.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

L'invention concerne un procédé de mise en place d'au moins un conducteur électrique composite (1) dans au moins une rainure (2) d'un stator ou d'un rotor d'une machine électrique (4), le conducteur électrique composite (1) comprenant une pluralité d'éléments conducteurs (5), notamment des fibres et/ou des fils, à base de nanotubes de carbone ou de graphène, et une isolation (7) à base d'au moins une matière thermodurcie (6). Selon l'invention : les éléments conducteurs individuels (5) sont enveloppés par la matière thermodurcie (6), la matière thermodurcie (6) n'étant que partiellement réticulée après l'enveloppement ; les éléments conducteurs (5) enveloppés par la matière thermodurcie (6) à l'état partiellement réticulé sont reliés pour former un composite (8) ; le composite (8) constitué des éléments conducteurs (5) enveloppés par la résine thermodurcie (6) à l'état partiellement réticulé est placé dans la ou les rainures (2) ; et la résine thermodurcie (6) à l'état partiellement réticulé est réticulée thermiquement de manière à former l'isolation (7) du conducteur électrique composite (1). L'invention concerne également une machine électrique (4) dans laquelle un conducteur composite électrique (1) de ce type est placé dans au moins une rainure (2) d'un stator (3) ou d'un rotor.
PCT/EP2022/075290 2021-09-30 2022-09-12 Machine électrique et procédé de mise en place d'au moins un conducteur électrique composite dans au moins une rainure d'un stator ou d'un rotor pour une machine électrique WO2023052116A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021210974.8 2021-09-30
DE102021210974.8A DE102021210974A1 (de) 2021-09-30 2021-09-30 Elektrische Maschine und Verfahren zum Einlegen von zumindest einem elektrischen Leiterverbund in zumindest eine Nut eines Stators oder Rotors für eine elektrische Maschine

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WO2023052116A1 true WO2023052116A1 (fr) 2023-04-06

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