EP4143952A1 - Stator pour une machine électrique et procédé de fabrication d'un stator pour une machine électrique - Google Patents

Stator pour une machine électrique et procédé de fabrication d'un stator pour une machine électrique

Info

Publication number
EP4143952A1
EP4143952A1 EP21721481.6A EP21721481A EP4143952A1 EP 4143952 A1 EP4143952 A1 EP 4143952A1 EP 21721481 A EP21721481 A EP 21721481A EP 4143952 A1 EP4143952 A1 EP 4143952A1
Authority
EP
European Patent Office
Prior art keywords
stator
conductors
interconnection element
stator core
interconnection
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
EP21721481.6A
Other languages
German (de)
English (en)
Inventor
Stefan ROSSNER
Florian Bachheibl
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.)
Molabo GmbH
Original Assignee
Molabo 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.)
Filing date
Publication date
Application filed by Molabo GmbH filed Critical Molabo GmbH
Publication of EP4143952A1 publication Critical patent/EP4143952A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
    • 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
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Definitions

  • the present application relates to a stator for an electrical machine and a method for producing a stator for an electrical machine.
  • Electric machines can be operated as a motor or generator.
  • the stator can comprise an electrical winding in slots, which is formed by electrical conductors.
  • the electrical winding is attached to a stator.
  • Power supply unit connected, which can be multi-phase.
  • one or more interconnection elements can be attached to one side of the stator.
  • the interconnection elements contact the electrical conductors. It is therefore necessary to electrically isolate the interconnection elements from one another.
  • To attach the interconnection elements to the stator a large number of assembly steps and connection processes are often necessary.
  • support systems are often used to attach the shuttering elements. This manufacturing method and the necessary components increase the complexity of the electrical machine.
  • One problem to be solved consists in specifying a stator for an electrical machine which can be manufactured efficiently.
  • Another object to be solved consists in specifying an efficient method for producing a stator for an electrical machine. The objects are achieved by the subjects of the independent claims. Advantageous refinements and developments are specified in the subclaims.
  • the stator comprises a stator core.
  • the stator core can extend along a longitudinal axis.
  • the stator core can have a multiplicity of laminated stator cores.
  • the laminated stator cores can be arranged one above the other.
  • the stator core can have the shape of a cylinder.
  • the longitudinal axis of the stator core runs parallel to the longitudinal axis of the cylinder.
  • the stator core can comprise a magnetic material.
  • the stator further comprises at least two slots which are arranged in the stator core.
  • the slots can be made in the stator core.
  • the slots can extend through the stator core.
  • the slots can extend completely through the stator core. This means that the slots can extend from a first side of the stator core to a second side of the stator core.
  • the first and the second side are each the base and the top surface of the cylinder.
  • the grooves can therefore each have a straight shape.
  • the slots are recesses in the stator core. Overall, the stator can have a large number of slots in the stator core.
  • the stator further comprises an electrical winding which comprises at least two dimensionally stable electrical conductors.
  • the electrical conductors have an electrically conductive material.
  • the fact that the ladder is dimensionally stable can mean that the conductors have a rigid shape. In particular, the conductors are not flexible.
  • the ladder can be inherently rigid.
  • the conductors can also be mechanically stable.
  • the ladders are each a stick.
  • the conductors each have a rod-like shape.
  • the cross-sectional profile of the ladder is trapezoidal. This means that the conductors are each trapezoidal in a cross section through the stator, the cross section being given in a plane which runs perpendicular to the longitudinal axis of the stator core.
  • the dimensional stability of the ladder can be achieved through sufficient material thickness, the choice of material or through a strength-optimized shape.
  • the stator further comprises at least one interconnection element on at least one side of the stator core.
  • the stator can have at least one interconnection element on one side of the stator core.
  • the interconnection element can have an electrically conductive material.
  • the interconnection element has copper and / or aluminum.
  • the interconnection element can be arranged on the base surface or the top surface of the stator core.
  • the interconnection element can have the shape of a ring segment. It is also possible for the interconnection element to have the shape of a ring.
  • the interconnection element can be arranged at a distance from the stator core.
  • the electrical winding has at least two of the conductors and at least one interconnection element.
  • the stator can have multiple electrical windings.
  • At least one of the conductors is arranged in each of the grooves. This means that at least one of the conductors is arranged in each groove. It is possible that exactly one conductor is arranged in each groove. However, it is also possible that at least two conductors are arranged in each slot. For example, the conductors do not completely fill the grooves.
  • the conductors can have a greater extension along the longitudinal axis of the stator core than the slots.
  • the conductors can be electrically isolated from the stator core.
  • an insulation material can be arranged in each of the grooves. The insulation material is arranged between the conductors and the stator core.
  • the interconnection element is electrically connected to at least one of the conductors.
  • the interconnection element can be in direct contact with at least one of the conductors. It is also possible for the interconnection element to be electrically connected to at least two of the conductors.
  • the interconnection element is mechanically connected to the stator core via at least one of the conductors. This means that the interconnection element is mechanically connected to at least one of the conductors.
  • the conductors are each mechanically connected to the stator core. This enables the mechanical connection of the interconnection element to the stator core via the conductor.
  • the interconnection element can be mechanically connected to the stator core via the at least one conductor to which it is electrically connected.
  • the conductors are each mechanically fixed in the grooves. This means that the conductors are each mechanically connected to the stator core.
  • the fact that the conductors are mechanically fixed in the grooves can mean that the conductors are arranged immovably in the grooves. The conductors are thus firmly positioned in the grooves. This mechanically connects the conductors to the stator core.
  • the fixation of the Conductors in the grooves can be achieved, for example, in that the conductors are pressed into the grooves.
  • the conductors to be fixed in the grooves with a fixing material.
  • the fixing material is introduced into the grooves in addition to the conductors.
  • the fixing material is potting.
  • the fixing material can be an insulation system or part of an insulation system.
  • the conductors are mechanically fixed in the grooves by the fixing material.
  • the mechanical connection between the interconnection element and the stator core via at least one of the conductors is self-supporting. This means that there is a mechanical connection between the interconnection element and the stator core via at least one of the conductors, and this mechanical connection is self-supporting.
  • the fact that the mechanical connection is self-supporting can mean that no further mechanical connection is required for a stable connection of the interconnection element to the stator core.
  • the interconnection element is thus mechanically connected to the stator core mainly via at least one of the conductors.
  • the mechanical connection between the interconnection element and the stator core via at least one of the conductors is a load-bearing mechanical connection.
  • the stator can therefore be free of further connecting elements between the interconnection element and the stator core.
  • the mechanical connection between the interconnection element and the stator core via at least one of the conductors can be the only mechanical connection between the interconnection element and the stator core.
  • the interconnection element can be mechanically connected to the stator core exclusively via at least one of the conductors.
  • the self-supporting mechanical connection between the interconnection element and the stator core via at least one of the conductors enables the stator to be constructed with reduced complexity.
  • the interconnection element can be mechanically connected to the stator core mainly or exclusively via at least one of the electrical conductors. Therefore, no further support elements are required for fastening the interconnection element to the stator core. There is also no need for assembly elements, alignment elements for assembling the interconnection element and a combination of several interconnection elements isolated from one another.
  • connection of the interconnection element to the stator core via at least one of the conductors is sufficient for stable attachment of the interconnection element to the stator core.
  • the interconnection element is mechanically connected to at least one of the conductors in a form-fitting manner. This can mean that the interconnection element and the respective conductor each have a shape that is adapted to one another in places. In the area of the mechanical connection, the interconnection element and the conductor can rest against one another in a form-fitting manner.
  • the interconnection element and the at least one conductor can adjoin one another without gaps in the area of the mechanical connection.
  • the interconnection element and the at least one conductor can be in direct contact.
  • the positive connection enables a mechanical connection with a high degree of stability. This advantageously enables the interconnection element to be connected to the stator core in a mechanically self-supporting manner via the at least one conductor.
  • the interconnection element has at least one recess.
  • the recess can be open on at least one side. It is also possible for the interconnection element to have at least two recesses.
  • the recess can have a larger area than one of the conductors, the cross section being given in a plane which runs perpendicular to the longitudinal axis of the stator core.
  • the recess can have a shape adapted to one of the conductors.
  • the interconnection element is mechanical and in the region of the recess electrically connected to one of the conductors.
  • the respective conductor can be arranged at least in places in the recess.
  • the interconnection element and the respective conductor can be connected to one another in a form-fitting manner.
  • the interconnection element is electrically conductively connected to one of the conductors.
  • the mechanical connection in the area of the recess between the shuttering element and the conductor is self-supporting. This means that the interconnection element is mechanically connected to the stator core via the mechanical connection in the area of the recess via the conductor.
  • the mechanical connection between the interconnection element and the conductor in the area of the recess can be established by cold welding, laser welding, electron beam welding, metal inert gas welding, metal active gas welding, stir / friction welding, soldering or via pressure or spring contacts. Since the interconnection element is mechanically connected to the stator core via the conductor, the complexity of the structure of the stator is advantageously reduced.
  • one of the conductors extends through the recess.
  • the conductor can extend completely through the recess.
  • the recess can extend completely through the interconnection element. Because the conductor extends through the recess, the interconnection element can be connected to the conductor in a mechanically stable manner.
  • the recess has a shape for positioning a conductor in the recess.
  • the recess has a shape that allows the positioning of a conductor in the Simplified recess.
  • the recess has inclined side surfaces. These can be used to position a conductor in the recess.
  • the recess can have a shape adapted to the conductor.
  • the recess has a shape for guiding or joining a conductor into the recess. In this way, the positioning of a conductor in the recess is simplified.
  • the stator has an insulation system which is arranged at least in spaces between the stator core and the conductors and / or between the stator core and the interconnection element.
  • the insulation system has an electrically insulating material.
  • the insulation system can electrically isolate the conductors from the stator core.
  • the insulation system can thus be arranged at least in places in the grooves.
  • the insulation system can electrically isolate the interconnection element from the stator core.
  • the insulation system can have a casting.
  • the insulation system can be cast or injection molded.
  • the insulation system can be in one piece. This means that the insulation system does not consist of several parts but only one part.
  • the insulation system can be in mechanical contact with the stator core and the interconnection element. This means that the insulation system can also create a mechanical connection between the
  • Interconnect element and the stator core contribute.
  • the mechanical connection between the interconnection element and the stator core is already self-supporting via at least one of the conductors.
  • the insulation system is therefore not required for mechanical fastening of the interconnection element to the stator core.
  • the insulation system is used for can contribute mechanical connection, it is possible that the interconnection element is mechanically connected to the stator core exclusively via at least one of the conductors and the insulation system.
  • the insulation system enables efficient electrical insulation of both the stator core from the conductors and the stator core from the interconnection element.
  • the insulation system can be in contact with a cooling system. This means that other components of the stator can also be cooled via the insulation system.
  • To cool the interconnection element it is also possible for it to be connected to a cooling system via a thermally conductive material.
  • the stator has at least one further interconnection element.
  • the further interconnection element can have the same structure as the interconnection element.
  • the further interconnection element can have the same features as the interconnection element.
  • the interconnection element and the further interconnection element can be arranged on the same side of the stator core.
  • the interconnection element and the further interconnection element can be arranged one above the other along the longitudinal axis of the stator core. It is also possible for the interconnection element and the further interconnection element to be arranged next to one another in a cross section through the stator.
  • the interconnection element and the further interconnection element can be connected to one another via an insulation resin, a composite material, glued insulation, a potting compound or a plastic injection molding.
  • the stator can have a multiplicity of interconnection elements and / or a multiplicity of further interconnection elements.
  • a variety of Interconnection elements and / or further interconnection elements allow separate electrical control of the conductors.
  • the interconnection element and the further interconnection element are electrically isolated from one another.
  • at least one of the following materials can be arranged between the interconnection element and the further interconnection element: an insulation resin, a composite material, bonded insulation, a potting compound, a plastic injection molding, an insulating material, an insulation paper, a coating.
  • the interconnection element and / or the further interconnection element can have a surface treatment. In the area of the surface treatment, the interconnection element and / or the further interconnection element can be electrically insulating.
  • the surface treatment can be a
  • Acting surface modification such as an oxidation. It is also possible for the interconnection element and the further interconnection element to be connected to one another by an insulator wound around them. It is also possible for the interconnection element and the further interconnection element to be connected to one another via a matrix made of an insulating material or plastic. It is necessary to electrically isolate the interconnection element and the further interconnection element from one another in order to enable the conductors to be controlled separately.
  • the interconnection element and the further interconnection element have an interlocking shape in places. This can mean that the interconnection element and the further interconnection element form a form fit with one another in places enter.
  • the interlocking shape increases the stability of the connection between the interconnection element and the further interconnection element or the fastening of the interconnection element and the further interconnection element on the stator core.
  • an electrical machine is also specified.
  • the electrical machine has a stator described here.
  • all features of the stator described are also disclosed for the stator of the electrical machine and vice versa.
  • the electrical machine also has a rotor that is movable relative to the stator.
  • the rotor can be an internal rotor or an external rotor.
  • An air gap can be arranged between the stator and the rotor. Since the mechanical connection between the interconnection element and the stator core is self-supporting via at least one of the conductors, the complexity of the construction of the electrical machine is also reduced. This enables the electric machine to be manufactured efficiently.
  • a method for producing a stator for an electrical machine is also specified.
  • the stator can preferably be produced using a method described here. In other words, all of the features disclosed for the stator are also disclosed for the method for producing a stator for an electrical machine, and vice versa.
  • the method comprises a method step in which a stator core of the stator is provided with at least two slots is provided.
  • the slots are made in the stator core.
  • the grooves can then be electrically isolated. This can mean that the grooves are lined with an electrically insulating material.
  • At least two dimensionally stable electrical conductors are introduced into the grooves, at least one of the conductors being arranged in each of the grooves.
  • the conductors are mechanically fixed in the respective grooves.
  • the fixation of the conductors in the grooves can be achieved, for example, by pressing the conductors into the grooves.
  • the conductors it is also possible for the conductors to be fixed in the grooves with a fixing material, for example a potting compound. To do this, the conductors are first inserted into the grooves. The remaining cavities in the grooves are then filled with the potting compound.
  • the conductors are mechanically fixed in the grooves as the potting material hardens.
  • the conductors can be introduced and fixed in the grooves in one step or in separate steps.
  • At least one interconnection element is attached to at least one side of the stator core. This means that the interconnection element is mechanically connected to the stator core.
  • the steps of the method can be carried out in any order, which can differ from the order given here.
  • An electrical winding of the stator comprises the conductors and the interconnection element. This can mean that an electrical winding of the stator has at least two of the conductors and at least one interconnection element.
  • the stator can have multiple electrical windings.
  • the interconnection element is electrically connected to at least one of the conductors.
  • the interconnection element is mechanically connected to the stator core via at least one of the conductors.
  • the conductors are each mechanically fixed in the grooves.
  • the mechanical connection between the interconnection element and the stator core via at least one of the conductors is self-supporting.
  • the self-supporting mechanical connection between the interconnection element and the stator core via at least one of the conductors enables the stator to be manufactured efficiently. Since no bending, connecting or assembly processes are required to fasten the interconnection element to the stator core, the manufacturing process is less complex. No further support elements, mounting elements or alignment elements are required either. Due to this simplification of the manufacturing process, the stator can be manufactured efficiently.
  • the stator has at least one further interconnection element, and the interconnection element and the further interconnection element are mechanically connected to one another and electrically isolated from one another before being attached to the stator core. Even in the event that the stator has more than one interconnection element and more than one further interconnection element, the interconnection elements and the further interconnection elements are mechanically connected to one another and electrically isolated from one another before they are attached to the stator core. This makes it easier to attach to the stator core, since instead of a large number of elements, only a composite of the interconnection elements and further interconnection elements have to be attached. It is on It is possible for the interconnection elements and the further interconnection elements to be connected to one another to form several partial connections before being attached to the stator core.
  • the interconnection element and the further interconnection element can be connected to one another by means of plastic hot caulking or plastic rivets.
  • An electrically insulating material can be arranged between the interconnection element and the further interconnection element.
  • the interconnection element is electrically connected to at least one of the conductors by cold welding, laser welding, electron beam welding, metal inert gas welding, metal active gas welding, stir / friction welding, soldering or via pressure or spring contacts. It is also possible for the interconnection element to be connected to at least one of the conductors by pressing or pressing (press fit). These methods enable a stable mechanical connection and a good electrical connection between the interconnection element and the conductor.
  • stator described here the electrical machine and the method for producing a stator for an electrical machine are explained in more detail below in connection with exemplary embodiments and the associated figures.
  • FIGS 1, 2 and 3 show embodiments of the stator.
  • FIG. 4 shows an embodiment of the electrical machine.
  • FIG. 5 describes an exemplary embodiment of the method for producing a stator for an electrical machine.
  • FIGS. 8 and 9 show sectional views through further exemplary embodiments of the stator.
  • FIGS. 10 and 11 show details of further exemplary embodiments of the stator.
  • FIG. 1 An exemplary embodiment of a stator 20 for an electrical machine 21 is shown in FIG.
  • the view in FIG. 1 is an oblique side view in which the entire stator 20 is not shown.
  • the stator 20 includes a stator core 22 which has the shape of a cylinder.
  • a plurality of slots 23 are arranged in the stator core 22.
  • the slots 23 extend completely through the stator core 22.
  • the slots 23 are arranged next to one another along a circumference of the stator core 22.
  • the grooves 23 are each equally spaced from one another. Thus, the slots 23 are evenly distributed along the circumference of the stator core 22.
  • a dimensionally stable electrical conductor 25 is arranged in each of the grooves 23.
  • the grooves 23 are opened toward the center of the stator core 22.
  • the conductors 25 do not completely fill the grooves 23 in each case.
  • Adjacent to the openings, the grooves 23 each have an area which is free of the conductors 25.
  • the conductors 25 are each a rod.
  • the conductors 25 extend out of the stator core 22.
  • the conductors 25 thus protrude from the stator core 22 on one side.
  • the conductors 25 all protrude from the stator core 22 by the same length.
  • the stator 20 further includes a plurality of
  • the stator 20 can have a multiplicity of interconnection elements 26 and at least one further interconnection element 29.
  • the interconnection elements 26 and the further interconnection element 29 can have the same structure and the same features.
  • the interconnection elements 26 are arranged on at least one side of the stator core 22.
  • the stator 20 has a multiplicity of electrical windings 24. Each electrical winding 24 of the stator 20 has at least two of the conductors 25 and at least one interconnection element 26 or at least one further interconnection element 29.
  • the interconnection elements 26 each have the shape of a ring segment.
  • the interconnection elements 26 are arranged distributed along the circumference of the stator core 22. In addition, some of the interconnection elements 26 are arranged one above the other along the longitudinal axis of the stator core 22.
  • the interconnection elements 26 have an electrically conductive material.
  • Each of the interconnection elements 26 is electrically connected to at least one of the conductors 25.
  • each of the interconnection elements 26 is electrically connected to two conductors 25. This means that two of the conductors 25 are electrically connected to one another via a respective interconnection element 26.
  • each switching element 26 has two recesses 27. In the area of the recesses 27, each of the switching elements 26 is mechanically and electrically with them each connected to one of the conductors 25.
  • one of the conductors 25 extends through each of the recesses 27. This means that one of the conductors 25 is arranged in each of the recesses 27.
  • the interconnection elements 26 are each mechanically connected to one of the conductors 25 in a form-fitting manner.
  • the interconnection elements 26 and the conductors 25 can each be electrically and mechanically connected to one another in the area of the recesses 27 using different processes.
  • the connection between a connecting element 26 and a conductor 25 is achieved by cold welding, laser welding, electron beam welding, metal inert gas welding, metal active gas welding, friction stir welding, soldering or by pressure or spring contacts.
  • Each of the interconnection elements 26 is mechanically connected to the stator core 22 via at least one of the conductors 25.
  • the conductors 25 are each mechanically fixed in the grooves 23. This enables the mechanical connection between the respective interconnection element 26 and the stator core 22 to be self-supporting via at least one of the conductors 25. This mechanical connection is so stable that no further mechanical connection is required.
  • the interconnection elements 26 are electrically insulated from one another. This means that each of the interconnection elements 26 is electrically isolated from the other interconnection elements 26.
  • the interconnection elements 26 are electrically insulated from the further interconnection element 29.
  • an electrically insulating material can be arranged between the interconnection elements 26 and the further interconnection element 29. The insulating material is not shown in FIG. It is also possible for the interconnection elements 26 and / or the further interconnection element 29 to be electrically insulating in places by a surface treatment.
  • FIG. 1 A further exemplary embodiment of the stator 20 is shown in FIG. The only difference from the structure shown in FIG. 1 is that the stator 20 additionally has a casing 31.
  • the cladding 31 surrounds the stator core 22 in lateral directions x, the lateral directions x running perpendicular to the longitudinal axis of the stator core 22.
  • the cladding 31 surrounds the shuttering elements 26 in lateral directions x.
  • the cladding 31 can comprise aluminum.
  • the electrical machine 21 has a stator 20 as shown in FIG.
  • the electrical machine 21 has a rotor 30 that is movable relative to the stator 20.
  • the rotor 30 is an internal rotor and is arranged in the stator 20.
  • a stator core 22 of the stator 20 is provided.
  • the stator core 22 has at least two slots 23.
  • at least two dimensionally stable electrical conductors 25 are introduced into the grooves 23, at least one of the conductors 25 being arranged in each of the grooves 23. aside from that the conductors 25 are mechanically fixed in the grooves 23.
  • at least one interconnection element 26 is attached to at least one side of the stator core 22.
  • the interconnection element 26 is electrically and mechanically connected to at least one of the conductors 25. This can be done by cold welding, laser welding,
  • Electron beam welding metal inert gas welding, metal active gas welding, stir-friction welding, soldering or via pressure or spring contacts can be achieved.
  • At least one interconnection element 26 and at least one further interconnection element 29 are mechanically connected to one another and electrically isolated from one another before they are attached to the stator core 22.
  • the interconnection element 26 and the further interconnection element 29 can be mechanically connected to one another via an insulation resin, a composite material, glued insulation, a potting compound or a plastic injection molding.
  • the electrical insulation of the interconnection elements 26 from one another can be achieved in that an electrically insulating material is arranged between the interconnection elements 26.
  • the interconnection element 26 and / or the further interconnection element 29 can have a surface treatment. In the area of the surface treatment, the interconnection element 26 and / or the further interconnection element 29 can be electrically insulating.
  • FIG. 1 A further exemplary embodiment of the stator 20 is shown in FIG.
  • one of the interconnection elements 26 is not shown in FIG. 6 for the purpose of illustration.
  • the interconnection elements 26 and the rest Interconnection element 29 is electrically isolated from one another.
  • an electrically insulating material 32 is arranged between the interconnection elements 26 and the further interconnection element 29.
  • the interconnection elements 26 and / or the further interconnection element 29 it is also possible for the interconnection elements 26 and / or the further interconnection element 29 to have a surface treatment. In the area of the surface treatment, the interconnection elements 26 and / or the further interconnection element 29 are electrically insulating.
  • FIG. 6 shows that the electrically insulating material 32 is arranged on the interconnection elements 26, which are exposed since one of the interconnection elements 26 is not shown.
  • the electrically insulating material 32 is also arranged in lateral directions x between the interconnection elements 26.
  • a section in the stator core 22 is shown below the point at which one of the interconnection elements 26 is not shown. In this section it can be seen that the electrically conductive material 32 is also located between the interconnection elements 26 and the stator core 22.
  • FIG. 7 a section of the exemplary embodiment of the stator 20 shown in FIG. 6 is shown.
  • One of the interconnection elements 26 is also not shown in FIG. 7 for the purpose of illustration.
  • the electrically insulating material 32 is arranged on the upper side 33 of the interconnection element 26 located below.
  • the top side 33 of the interconnection elements 26 and of the further interconnection elements 29 faces away from the stator core 22.
  • FIG. 8 shows a sectional illustration through part of a further exemplary embodiment of the stator 20.
  • the stator 20 additionally has an insulation system 28.
  • the isolation system 28 is in spaces between the Stator core 22 and the conductors 25 are arranged.
  • the insulation system 28 is arranged between the stator core 22 and the interconnection elements 26.
  • the insulation system 28 is an encapsulation. This fills the spaces in the area of the conductors 25 and the interconnection elements 26.
  • one of the conductors 25 extends beyond the extent of the stator core 22.
  • An electrically insulating material 32 is arranged between the stator core 22 and one of the interconnection elements 26.
  • the electrically insulating material 32 is arranged on the stator core 22 on the side on which the interconnection elements 26 are arranged.
  • the insulation system 28 is arranged in the regions of the grooves 23 which are free from the conductors 25. The areas of the slots 23 in which the insulation system 28 is arranged are visible on the inside of the stator core 22.
  • the cladding 31 is arranged around the stator core 22 and the interconnection elements 26.
  • FIG. 9 shows a sectional illustration through part of a further exemplary embodiment of the stator 20. The only difference from the exemplary embodiment shown in FIG. 8 is that the insulation system 28 is used instead of the electrically insulating material 32. That means between the interconnection elements
  • the insulation system 28 is arranged.
  • the insulation system 28 is arranged on the stator core 22 on the side on which the interconnection elements 26 are arranged.
  • the insulation system thus electrically isolates the stator core 22 from the interconnection elements 26.
  • the insulation system 28 electrically isolates the interconnection elements 26 from one another.
  • stator 20 Exemplary embodiment of the stator 20 is shown.
  • the recesses 27 each have the shape of a trapezoid in a cross section through the stator 20, the cross section being given in a plane which runs perpendicular to the longitudinal axis of the stator core 22.
  • the conductors 25 also have the shape of a trapezoid in this cross section. The conductors 25 can thus be placed in the recesses 27 with an accurate fit.
  • the trapezoidal shape prevents the conductors 25 from slipping in lateral directions x.
  • FIG. 1 A section of a further exemplary embodiment of the stator 20 is shown in FIG.
  • a switching element 26 and a further switching element 29 each have an interlocking shape in places.
  • the shuttering elements have on their upper side 33 26 and the further shuttering elements 29 each have a protuberance 34.
  • the shuttering elements 26 and the further shuttering elements 29 each have a recess 35 which has the shape of the protuberance 34.
  • the interconnection elements 26 and the further interconnection elements 29 can be attached to the stator core 22 in such a way that in each case a protuberance 34 is arranged in a recess 35.
  • one interconnection element 26 and another interconnection element 29 interlock in places, which the
  • Cover 32 electrically insulating material
  • top 34 protuberance 35: recess S1, S2, S3: steps x: lateral direction

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

L'invention concerne un stator (20) pour une machine électrique (21). Le stator (20) comprend un noyau de stator (22), au moins deux rainures (23) qui sont formées dans le noyau de stator (22), un enroulement électrique (24) qui comprend au moins deux conducteurs électriques de dimensions stables (25), et au moins un élément de câblage (26) sur au moins une face du noyau de stator (22), dans lequel au moins un des conducteurs (25) est disposé dans chaque rainure (23), l'élément de câblage (26) est électriquement connecté à au moins l'un des conducteurs (25), l'élément de câblage (26) est relié mécaniquement au noyau de stator (22) par l'intermédiaire d'au moins un des conducteurs (25), chaque conducteur (25) est fixé mécaniquement dans les rainures (23), et la liaison mécanique entre l'élément de câblage (26) et le noyau de stator (22) est autoportante par l'intermédiaire d'au moins l'un des conducteurs (25). L'invention concerne en outre une machine électrique (21) et un procédé de production d'un stator (20) pour une machine électrique (21).
EP21721481.6A 2020-04-29 2021-04-22 Stator pour une machine électrique et procédé de fabrication d'un stator pour une machine électrique Pending EP4143952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020111704.3A DE102020111704A1 (de) 2020-04-29 2020-04-29 Stator für eine elektrische Maschine und Verfahren zur Herstellung eines Stators für eine elektrische Maschine
PCT/EP2021/060564 WO2021219489A1 (fr) 2020-04-29 2021-04-22 Stator pour une machine électrique et procédé de fabrication d'un stator pour une machine électrique

Publications (1)

Publication Number Publication Date
EP4143952A1 true EP4143952A1 (fr) 2023-03-08

Family

ID=75674829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21721481.6A Pending EP4143952A1 (fr) 2020-04-29 2021-04-22 Stator pour une machine électrique et procédé de fabrication d'un stator pour une machine électrique

Country Status (5)

Country Link
US (1) US20230188014A1 (fr)
EP (1) EP4143952A1 (fr)
CN (1) CN115485955A (fr)
DE (1) DE102020111704A1 (fr)
WO (1) WO2021219489A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4199328A1 (fr) * 2021-12-16 2023-06-21 Hamilton Sundstrand Corporation Procédé de fabrication d'un ensemble stator

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US268205A (en) * 1882-11-28 Dynamo or magneto electric machine
DE10143217C1 (de) 2001-09-04 2003-02-27 Compact Dynamics Gmbh Wanderfeldmaschine
DE10329641A1 (de) * 2003-07-01 2005-02-03 Compact Dynamics Gmbh Wanderfeldmaschine
US6958561B2 (en) 2004-02-27 2005-10-25 Unique Product & Design Co., Ltd. Stator winding structure of a motor or a generator
US7723879B2 (en) 2006-12-12 2010-05-25 Nidec Corporation Motor having multiple busbar plates and wire for the same
DE102007021737A1 (de) * 2007-05-09 2008-11-20 Compact Dynamics Gmbh Wanderfeldmaschine
EP2112747B1 (fr) * 2008-04-24 2014-01-22 Magneti Marelli S.p.A. Machine électrique et son procéde de fabrication
US20100038988A1 (en) * 2008-08-12 2010-02-18 Gannon Ramy Stator and Method of Making the Same
JP5875886B2 (ja) 2012-02-08 2016-03-02 本田技研工業株式会社 回転電機のステータ
DE102016221043A1 (de) * 2016-10-26 2018-04-26 Robert Bosch Gmbh Modular aufgebauter Stator für einen Elektromotor oder Generator
DE102017129134A1 (de) * 2017-12-07 2019-06-13 Aumann AG Verfahren zum Herstellen einer Anordnung für eine Steckspule einer elektrischen Maschine und Anordnung

Also Published As

Publication number Publication date
DE102020111704A1 (de) 2021-11-04
US20230188014A1 (en) 2023-06-15
CN115485955A (zh) 2022-12-16
WO2021219489A1 (fr) 2021-11-04

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