[go: up one dir, main page]

WO2025082811A1 - Machine électrique à noyau feuilleté qui est fixé par complémentarité de force et par complémentarité de forme, et procédé d'assemblage de la machine électrique - Google Patents

Machine électrique à noyau feuilleté qui est fixé par complémentarité de force et par complémentarité de forme, et procédé d'assemblage de la machine électrique Download PDF

Info

Publication number
WO2025082811A1
WO2025082811A1 PCT/EP2024/078326 EP2024078326W WO2025082811A1 WO 2025082811 A1 WO2025082811 A1 WO 2025082811A1 EP 2024078326 W EP2024078326 W EP 2024078326W WO 2025082811 A1 WO2025082811 A1 WO 2025082811A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminated core
carrier
electrical machine
groove
individual
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/078326
Other languages
German (de)
English (en)
Inventor
Sebastian Reim
Michael Heuler
Alexander Riedel
Christoph Kohl
Simon Schuhmacher
Daniel Bub
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of WO2025082811A1 publication Critical patent/WO2025082811A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets

Definitions

  • the invention relates to an electrical machine having the features of the preamble of claim 1. Furthermore, the invention relates to a method for assembling the electrical machine.
  • Electrical machines such as electric motors or generators, comprise a stationary part designed as a stator and a rotating part designed as a rotor.
  • magnetic fields that vary spatially and temporally are usually generated in the rotor and/or the stator.
  • the rotor and/or the stator are usually designed as a laminated core, with several laminated laminations stacked on top of one another being connected, for example, with a so-called baked enamel.
  • the laminated core can be arranged on a cylindrical support by means of a press fit, with the laminated core being fixed between two axial stops to secure its axial position.
  • the document DE 10 2014 206 848 A1 discloses an annular laminated core which is formed from a plurality of axially stacked laminated laminations, wherein the laminated core is fixed to a cylindrical receiving portion of a carrier element by means of an inner or outer cylindrical fixing portion, and wherein the carrier element has two stops between which the laminated core is axially clamped in a force-fitting manner, wherein at least one of the stops comprises an annular support element which is arranged on the receiving portion and supports the laminated core and which is fixed to the carrier element by means of at least one caulking region.
  • the object of the invention is to create an electrical machine of the type mentioned above, which is characterized by a simple and secure fixing of the laminated core to the support. This object is achieved by an electrical machine having the features of claim 1 and by a method having the features of claim 14. Further features, advantages, and effects of the invention are described in the subclaims and the description with the figures.
  • the subject matter of the invention is an electric machine which is designed and/or suitable in particular for an electric axle drive and/or for driving a motor vehicle.
  • the electric machine is preferably designed as a traction machine, also known as a separate motor generator (SMG). Alternatively, however, the electric machine can also be designed as a transmission-integrated electric machine.
  • the electric machine is preferably a three-phase machine, for example a permanent magnet or separately excited, in particular coil-excited, synchronous machine, or an asynchronous machine.
  • the electric machine comprises a stator and a rotor mounted for rotation relative to the stator about a rotational axis.
  • the electric machine is designed as an internal rotor, with the rotor arranged radially inside the stator.
  • the electric machine can also be designed as an external rotor, with the rotor arranged radially outside the stator.
  • the stator has a laminated core, in particular a stator laminated core, which is formed from a plurality of individual laminates stacked one above the other in the axial direction with respect to the axis of rotation and connected to one another.
  • the rotor has a laminated core, in particular a rotor laminated core, which is formed from a plurality of individual laminates stacked one above the other in the axial direction with respect to the axis of rotation and connected to one another.
  • the individual laminates are preferably connected to one another to form a common, in particular one-piece, laminated core.
  • the individual laminates can also be joined to form a plurality of partial laminated cores, which are connected to one another together, in particular in multiple parts, to form the laminated core.
  • the individual laminates are preferably each formed from a magnetized and/or magnetizable material, preferably a steel alloy.
  • the individual laminates are designed as Sheet metal laminations are formed.
  • the individual sheets can be formed as identical parts and/or in an identical shape.
  • the individual sheets can be connected to one another by a material bond and/or force fit. For example, the individual sheets are welded, screwed, glued, punched, or connected in some other way.
  • the stator has a carrier, in particular a stator support, to which the laminated core, in particular the stator laminated core, is fixed via a frictional connection.
  • the rotor has a carrier, in particular a rotor support, to which the laminated core, in particular the rotor laminated core, is fixed via a frictional connection.
  • the carrier has a cylindrical receiving section for receiving the laminated core.
  • the frictional connection is formed, preferably by a radial excess, between an inner circumference of the stator support and an outer circumference of the stator laminated core and/or between an outer circumference of the rotor support and an inner circumference of the rotor laminated core.
  • the frictional connection is formed, preferably by a radial excess, between an outer circumference of the stator support and an inner circumference of the stator laminated core and/or between an inner circumference of the rotor support and an outer circumference of the rotor laminated core.
  • the laminated core is connected to the carrier, in particular the receiving section, via a press fit, also known as an interference fit.
  • the carrier in the region of the frictional connection, has at least one or exactly one groove which runs at least partially or completely around the circumference and into which at least one or exactly one of the individual sheets of the laminated core engages in sections to form an axial form-locking connection with respect to the axis of rotation.
  • the form-locking connection serves to additionally secure the laminated core in the axial direction with respect to the axis of rotation.
  • the groove is designed such that at least one individual sheet automatically engages in the groove after the frictional connection has been established.
  • the at least one groove is on an inner circumference of the support, in particular of the receiving section, if the laminated core is arranged radially inside the support.
  • the at least one groove is arranged on an outer circumference of the support, in particular of the receiving section, if the laminated core is arranged radially outside the receiving section.
  • the invention is based on the finding that the frictional connection can transmit operating loads, such as heat, torque, axial force, etc., during operation of the electrical machine.
  • operating loads such as heat, torque, axial force, etc.
  • this can lead to a change in the shape of the laminated core or the individual sheets, such as displacement, change in position, change in shape, etc., in the axial direction with respect to the axis of rotation.
  • This change can reduce the frictional connection and thus lead to a decreasing capacity to transmit operating loads.
  • the at least one groove makes it easy to achieve a positive connection through a toothing effect between the carrier and the laminated core in the axial direction.
  • the laminated core can thus be additionally secured to the carrier in the axial direction without the carrier having to be equipped with a separate stop, in particular end plates.
  • the positive connection can improve the friction and/or temperature transfer of the components in contact.
  • the individual sheets rest against the circumference of the support with an elastic prestress to form the frictional connection, wherein the at least one individual sheet engages in the at least one groove due to the elastic prestress in the radial direction with respect to the axis of rotation.
  • the elastic prestress generates a radial restoring force which presses the individual sheets in the radial direction against the circumference of the support.
  • the elastic prestress can be generated by a longitudinal interference fit and/or by a transverse interference fit. In the region of the groove, the elastic prestress can be reduced or eliminated.
  • the individual sheet arranged in the groove is at least partially or completely relaxed.
  • the at least one individual sheet is automatically moves radially into the groove.
  • the individual sheets are each connected to one another via a material bond, wherein the material bond has a reduced holding force when a target temperature is reached, so that the individual sheets are movable relative to one another at least in the radial direction.
  • the holding force counteracts the restoring force, wherein the holding force is greater than the restoring force in the cured state of the material bond and is smaller than the restoring force when the target temperature is reached.
  • the material bond between two adjacent individual sheets is formed by at least or exactly one intermediate layer.
  • the intermediate layer is designed such that a relative movement, preferably a shear movement, is ensured between the individual sheets, at least when the target temperature is reached.
  • the intermediate layer can be arranged optionally over the entire surface or partially or in certain regions between the individual sheets.
  • the intermediate layer can be applied by adhesion to one or both end faces of the individual sheets.
  • the target temperature is more than 50°C, preferably more than 100°C, and especially more than 150°C.
  • the adhesive bond ensures that the individual sheets are firmly connected to one another in the cured state or when the frictional connection is created, and that, under the influence of temperature, a relative movement between the individual sheets is easily enabled to form the positive connection.
  • the material bond is formed by an adhesive layer.
  • the adhesive layer is formed by a hot-melt adhesive, preferably a hot-melt adhesive varnish, also referred to as a "baking varnish.”
  • the adhesive layer has a thermoplastic behavior. The adhesive layer can thus soften upon heating and harden upon cooling.
  • the individual sheets are bonded to one another in a material bond or adhesive manner via the adhesive layer.
  • the An intermediate layer is formed by the adhesive layer.
  • the at least one individual sheet is received in the groove with a clearance fit in the radial and/or axial direction.
  • the at least one individual sheet can be received in the groove in a relaxed manner in the radial and/or axial direction.
  • a radial and/or axial clearance of more than 0.05 mm, preferably more than 0.1 mm, in particular more than 0.5 mm is formed between the at least one individual sheet and the groove.
  • the groove can have a groove width which corresponds at least to a sheet thickness of the at least one individual sheet. This enables a particularly simple and secure form-fitting connection.
  • the clearance fit can ensure secure engagement of the at least one individual sheet in the event of an axial offset between the individual sheet and the groove.
  • the at least one individual sheet can also be accommodated in the groove in the radial and/or axial direction by a reduced press fit and/or a transition fit.
  • an axial groove width of the at least one groove corresponds to an axial component width of at least or exactly two individual sheets.
  • more than two, preferably more than four, and especially more than six of the individual sheets can be accommodated in a groove. This ensures that, regardless of any axial offset between the groove and the individual sheets, at least one of the individual sheets always engages in the groove.
  • the carrier has at least or exactly one cooling channel which is designed and/or suitable for connection to a cooling system, wherein the cooling channel opens into the at least one groove.
  • a coolant can be introduced into and/or discharged from the groove via the cooling channel in order to cool the laminated core and the carrier.
  • the cooling channel can be designed for this purpose as a cooling channel with an inlet opening and at least one outlet opening.
  • the carrier can have a cooling channel with an inlet opening, in particular an inlet channel, and a further cooling channel with an outlet opening, in particular an outlet channel.
  • the cooling channel preferably extends in the axial direction with respect to the axis of rotation.
  • the cooling channel can extend continuously or at least partially over the entire structural length of the laminated core and/or the carrier.
  • the inlet and outlet openings can be arranged on a common end face or on opposite end faces of the carrier.
  • the inlet opening and/or the outlet opening can also be arranged on a circumferential side of the carrier, in particular of the receiving section.
  • an active coolant supply can be easily implemented via the at least one cooling channel, thereby improving cooling of the laminated core.
  • the cooling channel is delimited in the radial direction relative to the axis of rotation by the carrier on the one hand and by the laminated core on the other.
  • the at least one cooling channel is formed radially between the carrier and the laminated core.
  • the cooling channel is incorporated into the circumference of the carrier, in particular a lateral surface of the cylindrical receiving section, on the side facing the laminated core.
  • the cooling channel can be formed by a groove running in the axial direction.
  • the grooves are fluidically connected to one another via the at least one cooling channel.
  • the coolant is introduced via the cooling channel and The cooling medium is distributed over the multiple grooves in the circumferential direction.
  • the coolant flows circumferentially around the carrier and the laminated cores via the multiple grooves.
  • the grooves are spaced apart in the axial direction, preferably evenly, and closed in the circumferential direction.
  • the carrier preferably has more than two, preferably more than five, and especially more than ten of the grooves. The fluidic connection of the grooves enables large-area and/or uniform cooling of the carrier and the laminated core.
  • the laminated core is constructed from at least or exactly two partial laminated cores, wherein the carrier has at least one of the slots for each partial laminated core.
  • the carrier has at least one of the slots for each partial laminated core.
  • at least or exactly one of the individual sheets of the partial laminated cores engages sectionally in the respectively associated slot to form the axial positive connection.
  • the slots can advantageously be positioned above the partial laminated cores in order to ensure the power symmetry of the electric machine.
  • the beam has a local wall thickness increase, at least in the area of the groove.
  • the wall thickness increase serves to balance or compensate for a local weakening of the wall thickness caused by the at least one groove.
  • the wall thickness increase can correspond at least to the groove depth of the at least one groove.
  • the wall thickness increase is arranged on the side of the beam facing away from the laminated core. The wall thickness increase ensures that the beam essentially retains its shape due to the interference fit and that the frictional connection can be permanently guaranteed.
  • the carrier has at least or exactly one circumferential recess at the end, which is used to remove compressive stresses.
  • the recess serves to reduce local stresses in the support due to the interference fit with the laminated core.
  • the recess can be arranged on the side of the support facing the laminated core, preferably within the receiving section.
  • the recess can be formed, for example, by a further circumferential groove with a groove depth of less than 0.1 mm, preferably less than 0.05 mm, in particular less than 0.01 mm.
  • the recess prevents distortion of the support, so that, particularly in a design as a rotor, concentricity is prevented and, at the same time, the frictional connection can be ensured.
  • the carrier in particular the stator carrier, has at least one or exactly one bearing shield section for receiving a rotor bearing.
  • the bearing shield is formed by a radially inwardly directed collar, on which the rotor bearing is supported at least in the radial direction.
  • the receiving section is delimited on one axial side by the bearing shield section and is open on the other axial side.
  • the receiving section and the bearing shield section are manufactured from a common material section, in particular in one piece.
  • the carrier, in particular the receiving section has at least one recess at least on the side of the bearing shield in order to prevent axial migration of the rotor bearing.
  • a carrier is thus proposed which enables a particularly compact design of the electrical machine.
  • a further subject matter of the invention relates to a method for assembling the electrical machine, as already described above, in which a plurality of individual laminations are stacked one above the other in the axial direction with respect to the axis of rotation and connected to one another; a carrier is provided; and the laminated core is connected to the carrier via a frictional connection, wherein at least one of the individual laminations engages radially in the at least one groove due to the elastic prestress after the frictional connection has been established.
  • the Individual sheets are bonded to one another.
  • the individual sheets can also be bonded to one another in a force-fitting and/or form-fitting manner.
  • the bonded connection or the force-fitting and/or form-fitting connection can be at least partially and/or temporarily released after the force-fitting connection has been established, so that the individual sheets can move relative to one another at least in the radial direction.
  • the force-fitting connection is formed by a longitudinal interference fit in which the carrier and the laminated core are joined together by press-fitting.
  • the force-fitting connection can be formed by a transverse interference fit in which the carrier and the laminated core are joined together by shrink-fitting or cold-expansion.
  • the individual sheets are connected to one another via a material bond, wherein the laminated core and/or the carrier are heated to a target temperature and the holding force of the material bond is reduced when the target temperature is reached, so that the at least one individual sheet is moved sectionally into the groove relative to the adjacent individual sheets, overcoming the holding force of the material bond in the radial direction.
  • the individual sheets are provided at least in regions with an adhesive layer, preferably a baking varnish, via which the individual sheets are materially bonded to one another.
  • the holding force of the adhesive layer can soften upon heating and harden upon cooling.
  • the holding force counteracts the restoring force, wherein the holding force is smaller than the restoring force when the target temperature is reached.
  • the at least one individual sheet can be moved into the groove upon reaching the target temperature due to the acting restoring force.
  • FIG. 1 is a schematic representation of a motor vehicle with an electric machine as an embodiment of the invention
  • Fig. 2 is a sectional view of a stator of the electrical machine from Fig. 1;
  • Fig. 3 is a detailed view of the stator from Fig. 2;
  • Fig. 4 is a sectional view of a stator carrier for the stator of Fig. 2.
  • FIG. 1 shows a highly schematic representation of a vehicle 1, which is designed, for example, as an electrically powered motor vehicle.
  • vehicle 1 has an electric drive train 2 designed as an axle drive, which is formed by an electric machine 3, a transmission 4, and a differential 5.
  • the electric machine 3 is designed as a traction machine, which generates an electric drive torque during operation.
  • the drive torque is translated via the transmission 4 to the differential 5, with the differential 5 distributing the drive torque to two vehicle wheels 6a, 6b.
  • the electric machine 3 is designed as an internal rotor, wherein the electric machine 3 has a stator 7 and a rotor 8 rotatably mounted within the stator 7.
  • the rotor 8 is connected in a rotationally fixed manner to a rotor shaft 9, wherein the rotor shaft 9 is connected to the gearbox 4 in terms of drive or transmission technology.
  • the stator 7 forms a stationary or fixed part, which is, for example, firmly connected to a housing of the gearbox 4.
  • the gearbox 4 is designed, for example, as a reduction gear which has a transmission ratio of i > 1. In other words, the gearbox 4 serves to reduce the speed.
  • the stator 7 has a cylindrical support 10, in particular a stator support, and an annular laminated core 11, in particular a stator laminated core, which is arranged coaxially to a rotational axis 100 of the rotor 8 within the support 10.
  • the rotational axis 100 thus simultaneously forms the center- axis of the stator 7.
  • the laminated core 11 comprises a stator yoke which lies against the inner circumference of the carrier 10 and on which a plurality of radially inwardly projecting stator teeth, not shown, are formed, which in turn are provided with a stator winding 12.
  • the carrier 10 has a hollow cylindrical receiving section 13 and a radially inwardly directed bearing shield section 14, wherein the receiving section 13 is delimited in the axial direction with respect to the axis of rotation 100 on the one hand by the bearing shield section 14 and on the other hand is open.
  • the bearing shield section 14 is designed as a collar that is directed radially inward and/or extends in a radial plane of the axis of rotation 100, on the inner circumference of which at least or exactly one rotor bearing of the rotor 8 is supported for the rotatable mounting of the rotor shaft 9.
  • the receiving section 13 is designed, for example, as a hollow cylinder on the inner circumference of which the laminated core 11 is supported in the radial and axial directions with respect to the axis of rotation 100.
  • the laminated core 11 has a plurality of individual laminations 15, which are stacked one above the other in the axial direction with respect to the rotation axis 100 and connected to one another.
  • the laminated core 11 is held in the receiving section 13 via a frictional connection, in particular a press fit.
  • the inner diameter of the receiving section 13 is smaller than the outer diameter of the laminated core 11 in order to create the press fit between the carrier 10 and the laminated core 11.
  • the individual laminations 15 bear against the inner circumference of the receiving section 13 with an elastic prestress in the radial direction with respect to the rotation axis 100.
  • the receiving section 13 has on its inner circumference a plurality of grooves 16 surrounding the rotation axis 100, into which at least one of the individual sheets 15 of the laminated core 11 engages in sections to form a positive connection in the axial direction with respect to the rotation axis 100 under the action of the elastic prestress.
  • the receiving section 13 has, for example, exactly four of the grooves 16, which are arranged in the axial direction Direction with respect to the axis of rotation 100 are arranged evenly spaced from each other on the inner circumference.
  • the receiving section 13 can have a local wall thickness increase 17 in the region of one or more grooves 16 in order to increase the rigidity of the support 10.
  • the wall thickness increase 17 is formed on an outer side facing away from the laminated core 11 or on the outer circumference of the receiving section 13. This prevents the receiving section 13 from bending open and prevents a loss of the frictional connection.
  • the receiving section can have a circumferential recess 18, preferably on the side of the bearing shield section 14, in order to reduce compressive stress generated by the press fit in the vicinity of the bearing shield section 14.
  • the recess 18 is formed by a circumferential depression with a depth of approximately 0.05 mm. This prevents distortion of the bearing shield section 14 and thus axial displacement of the rotor bearing.
  • stator 7 is analogously applicable to the design of the rotor 8 if the latter comprises a laminated core, in particular a rotor laminated core.
  • the groove 16 has a groove width 101 that is greater than a sheet thickness of an individual sheet 15 of the laminated core 11.
  • the groove 16 has a groove width 101 that is greater than or equal to a component width 102 of at least five individual sheets 15.
  • the individual sheets 15 are accommodated in the groove 16 with a clearance fit in the axial and/or radial direction with respect to the axis of rotation.
  • the individual sheets 15 can be accommodated in a relaxed or at least partially relaxed manner within the groove 16. Due to the elastic tension, a restoring force F1 is generated, by which the individual sheets 15 are pressed against the inner circumference of the receiving section 13 in the radial direction with respect to the rotation axis 100.
  • the individual sheets 15 are each connected to one another via a material bond, wherein the material bond generates a holding force F2 that counteracts the restoring force F1 and is greater than the restoring force F1 in a cured state of the material bond.
  • the adhesive bond is formed by an adhesive layer 19 arranged between the individual sheets 15, which firmly bonds the individual sheets to one another, at least in certain areas.
  • the adhesive layer 19 can be formed by a baked enamel coating having thermoplastic properties. This means that the adhesive layer 19 softens when the laminated core 11 is heated and hardens when the laminated core 11 cools.
  • the laminated core 11 is mounted in the receiving section 13 by press-fitting and/or by shrinking or cold expanding.
  • the individual sheets 15 are elastically deformed outside the grooves 16 and subjected to the restoring force F1, and in the region of the grooves 16 they are fixed in the radial direction by the holding force F2.
  • the laminated core 11 is subjected to a target temperature, whereby when the target temperature is reached, the holding force F2 is reduced or is smaller than the restoring force F1.
  • the adhesive layer 19 exhibits viscous behavior when the target temperature is reached.
  • the individual sheets 15 arranged in the region of the groove 16 are moved outwards in the radial direction with respect to the axis of rotation 100 into the groove 16 and thus engage section by section in the groove 16, whereby in addition to the frictional connection, the positive connection is created in the axial direction.
  • the carrier 10, in particular the receiving section 13, has at least one cooling channel 20 on its inner circumference, which connects the plurality of grooves 16 in the axial direction with respect to the rotation axis 100.
  • the cooling channel 20 has an inlet opening 21 at one end and an inlet opening 22 at the other end. End has an outlet opening 22, via which the cooling channel 20 is fluidically connected to a cooling system of the electrical machine 3, not shown.
  • the carrier 10 or the receiving section 13 can also have a further cooling channel, not shown, wherein the cooling channel 20 is designed as an inlet channel with the inlet opening 21 and the further cooling channel is designed as an outlet channel with the outlet opening 22.
  • the inlet and outlet channels can be arranged diametrically opposite one another and/or adjacent to one another in the circumferential direction.
  • the cooling channel 20 is open in the radial direction or in the direction of the laminated core 11, wherein the cooling channel 20 is radially delimited by the laminated core 11 in an installed situation. In other words, the cooling channel 20 is closed between the inlet opening 21 and the outlet opening 22.
  • a main flow path 103 runs from the inlet opening 21 via the at least one cooling channel 20 to the outlet opening 22, wherein the main flow path 103 is divided at the location of the grooves 16 into a plurality of secondary flow paths 104, which run in the circumferential direction along the respective groove 16.
  • a coolant is introduced into the cooling channel 20 via the inlet opening 21 and distributed in the circumferential direction via the plurality of grooves 16.
  • the grooves 16 can form a type of cooling jacket, which enables uniform and/or large-area cooling of the carrier 10 and the laminated core 11 during operation of the electrical machine 3.
  • Rotor shaft 0 Carrier 1 Laminated core 2 Stator winding 3 Support section 4 End shield section 5 Individual laminations 6 Grooves 7 Wall thickness increase 8 Recess

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne une machine électrique (3) comprenant un stator (7) et un rotor (8) qui est monté rotatif autour d'un axe de rotation (100) par rapport au stator (7). Le stator (7) et/ou le rotor (8) présente un noyau stratifié (11), qui est constitué d'une pluralité de stratifications individuelles (15) qui sont reliées l'une à l'autre et empilées les unes sur les autres dans la direction axiale par rapport à l'axe de rotation (100), et un support (10), sur lequel le noyau stratifié (11) est fixé par l'intermédiaire d'une liaison par ajustement de force. Le support (10) présente, dans la région de la liaison par ajustement de force, au moins une rainure (16) qui s'étend au moins partiellement dans la direction circonférentielle et dans laquelle au moins l'une des stratifications individuelles (15) du noyau stratifié (11) vient partiellement en prise afin de former une liaison par complémentarité de forme axiale par rapport à l'axe de rotation (100).
PCT/EP2024/078326 2023-10-18 2024-10-09 Machine électrique à noyau feuilleté qui est fixé par complémentarité de force et par complémentarité de forme, et procédé d'assemblage de la machine électrique Pending WO2025082811A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023210193.9A DE102023210193A1 (de) 2023-10-18 2023-10-18 Elektrische Maschine mit kraft- und formschlüssig gesicherten Blechpaket sowie Verfahren zur Montage der elektrischen Maschine
DE102023210193.9 2023-10-18

Publications (1)

Publication Number Publication Date
WO2025082811A1 true WO2025082811A1 (fr) 2025-04-24

Family

ID=93119813

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/078326 Pending WO2025082811A1 (fr) 2023-10-18 2024-10-09 Machine électrique à noyau feuilleté qui est fixé par complémentarité de force et par complémentarité de forme, et procédé d'assemblage de la machine électrique

Country Status (2)

Country Link
DE (1) DE102023210193A1 (fr)
WO (1) WO2025082811A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE650140C (de) * 1937-09-11 Sachsenwerk Licht & Kraft Ag Mit zusaetzlicher Kraft gegossenes Gehaeuse elektrischer Maschinen
DE2935922A1 (de) * 1979-09-06 1981-04-02 Robert Bosch Gmbh, 7000 Stuttgart Elektrische maschine
JP2014212671A (ja) * 2013-04-22 2014-11-13 株式会社デンソー 回転電機用ステータ、回転電機用ロータおよび回転電機
DE102014206848A1 (de) 2014-04-09 2015-10-15 Zf Friedrichshafen Ag Baueinheit mit einem lamellierten Blechpaket für eine elektrische Maschine, Verfahren zur Herstellung einer solchen Baueinheit und elektrische Maschine
WO2018008417A1 (fr) * 2016-07-06 2018-01-11 パナソニック株式会社 Stratifié de plaque magnétique, procédé de fabrication correspondant et moteur utilisant ledit stratifié de plaque magnétique
CN212518555U (zh) * 2020-05-13 2021-02-09 惠州古川科技有限公司 一种永磁同步电机定子

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012012193A1 (de) * 2012-06-19 2012-12-13 Daimler Ag Verbindungsanordnung eines Aktivteils mit einem Halteelement einer elektrischen Maschine
DE102021130498A1 (de) * 2021-11-22 2023-05-25 Bayerische Motoren Werke Aktiengesellschaft Statorblechpaket für einen Stator einer elektrischen Antriebsmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE650140C (de) * 1937-09-11 Sachsenwerk Licht & Kraft Ag Mit zusaetzlicher Kraft gegossenes Gehaeuse elektrischer Maschinen
DE2935922A1 (de) * 1979-09-06 1981-04-02 Robert Bosch Gmbh, 7000 Stuttgart Elektrische maschine
JP2014212671A (ja) * 2013-04-22 2014-11-13 株式会社デンソー 回転電機用ステータ、回転電機用ロータおよび回転電機
DE102014206848A1 (de) 2014-04-09 2015-10-15 Zf Friedrichshafen Ag Baueinheit mit einem lamellierten Blechpaket für eine elektrische Maschine, Verfahren zur Herstellung einer solchen Baueinheit und elektrische Maschine
WO2018008417A1 (fr) * 2016-07-06 2018-01-11 パナソニック株式会社 Stratifié de plaque magnétique, procédé de fabrication correspondant et moteur utilisant ledit stratifié de plaque magnétique
CN212518555U (zh) * 2020-05-13 2021-02-09 惠州古川科技有限公司 一种永磁同步电机定子

Also Published As

Publication number Publication date
DE102023210193A1 (de) 2025-04-24

Similar Documents

Publication Publication Date Title
EP2101396B1 (fr) Rotor pour une machine électrique et machine électrique pour un faisceau d'entraînement de véhicule automobile
DE102018009845A1 (de) Rotor für eine elektrische Maschine, insbesondere eines Kraftfahrzeugs
DE102021129951A1 (de) Stützeinrichtung für einen Rotor einer elektrischen Maschine eines Kraftfahrzeugs sowie elektrische Maschine für ein Kraftfahrzeug
EP3931945B1 (fr) Rotor pourvu d'un support de rotor en plusieurs pièces pour une machine électrique
WO2019121001A1 (fr) Ensemble formant rotor ou stator à aimants permanents
WO2023088643A1 (fr) Noyau feuilleté pour stator d'une machine d'entraînement électrique
WO2016155718A1 (fr) Moteur électrique, en particulier pour une motorisation hybride d'un véhicule automobile
DE102019202568A1 (de) Rotor für eine elektrische Maschine mit einer Verbindungsbolzen aufweisenden Traganordnung eines Blechpaktes
EP2689156B1 (fr) Assemblage arbre-moyeu et procédé de réalisation d'un assemblage arbre-moyeu
WO2025082811A1 (fr) Machine électrique à noyau feuilleté qui est fixé par complémentarité de force et par complémentarité de forme, et procédé d'assemblage de la machine électrique
DE102021204219A1 (de) Blechscheibe oder Blechpaket für einen Rotor eines Elektromotors
DE102019202567A1 (de) Rotor für eine elektrische Maschine mit einer Kühlkanäle aufweisenden Traganordnung
DE102022004793A1 (de) Befestigungsanordnung eines Blechpakets eines Stators an einem Gehäuse einer Axialflussmaschine, insbesondere für ein Kraftfahrzeug, Axialflussmaschine sowie Kraftfahrzeug
DE102019202566A1 (de) Rotor für eine elektrische Maschine mit Kühlkanälen
WO2023078801A1 (fr) Stator pourvu d'un paquet de tôles en plusieurs parties et chaîne cinématique électrique pourvue du stator
DE102015225582A1 (de) Rotorlamellenpaket und Rotor für ein elektrisches Aggregat, insbesondere für einen Elektromotor, und Verfahren zur Herstellung eines solchen Rotors
DE102018104074A1 (de) Rotor, Rotorwelle und elektrische Maschine
DE102019215563A1 (de) Stator einer elektrischen Maschine
DE102023110325B4 (de) Stator, Rotor, elektrische Maschine und Verfahren zur Herstellung eines Stators und Verfahren zur Herstellung eines Rotors
DE102022001086A1 (de) Elektrische Maschine, insbesondere für ein Kraftfahrzeug
DE102023127553A1 (de) Statorbaugruppe für eine elektrische maschine
EP4302385A1 (fr) Machine électrique
EP4645657A1 (fr) Rotor à réluctance
WO2024175723A1 (fr) Rotor et son procédé de fabrication
DE102022120772A1 (de) Rotor für eine elektrische Traktionsmaschine eines Kraftfahrzeugs sowie Kraftfahrzeug

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24790309

Country of ref document: EP

Kind code of ref document: A1