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EP4320714A1 - Machine électrique - Google Patents

Machine électrique

Info

Publication number
EP4320714A1
EP4320714A1 EP22718053.6A EP22718053A EP4320714A1 EP 4320714 A1 EP4320714 A1 EP 4320714A1 EP 22718053 A EP22718053 A EP 22718053A EP 4320714 A1 EP4320714 A1 EP 4320714A1
Authority
EP
European Patent Office
Prior art keywords
stator
rotor
electrical machine
receiving sleeve
housing component
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
EP22718053.6A
Other languages
German (de)
English (en)
Inventor
Stefan Riess
Michael Menhart
Carsten Sonntag
Johann Oswald
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP4320714A1 publication Critical patent/EP4320714A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • H01R13/74—Means for mounting coupling parts in openings of a panel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2793—Rotors axially facing stators
    • H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2796—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets where both axial sides of the rotor face a stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle

Definitions

  • the present invention relates to an electrical machine, in particular for an electrically operated drive train of a motor vehicle, comprising a rotor which is rotatably mounted relative to a stator, the rotor having a rotor shaft with at least one rotor body arranged on the rotor shaft in a rotationally fixed and non-displaceable manner and the stator having at least one first stator body, wherein the first stator body has a first stator winding which is arranged within a first space which is at least partially surrounded by a delimiting first housing component.
  • Electric motors are increasingly being used to drive motor vehicles in order to create alternatives to internal combustion engines that require fossil fuels.
  • Significant efforts have already been made to improve the suitability for everyday use of electric drives and also to be able to offer users the driving comfort they are accustomed to.
  • This article describes a drive unit for an axle of a vehicle, which includes an electric motor that is arranged concentrically and coaxially with a bevel gear differential, with a switchable 2-speed planetary gear set being arranged in the power train between the electric motor and the bevel gear differential, which is also is positioned coaxially to the electric motor or the bevel gear differential or spur gear differential.
  • the drive unit is very compact and allows a good compromise between climbing ability, acceleration and energy consumption due to the switchable 2-speed planetary gear set.
  • Such drive units are also referred to as e-axles or electrically operable drive train.
  • hybrid drive trains are also known.
  • Such drive trains of a hybrid vehicle usually include a combination of an internal combustion engine and an electric motor and allow - for example in urban areas - a purely electric mode of operation with simultaneous sufficient range and availability, especially for cross-country trips.
  • electric machines intended for e-axles or hybrid modules there is a continuing need to increase their power densities, so that the cooling of the electric machines required for this is becoming increasingly important. Due to the necessary cooling capacity, hydraulic fluids, such as cooling oils, have prevailed in most concepts for dissipating heat from the thermally stressed areas of an electrical machine.
  • Jacket cooling and winding overhang cooling are known, for example, from the prior art for cooling electrical machines using hydraulic fluids. While jacket cooling transfers the heat generated on the outer surface of the stator laminations into a cooling circuit, with end winding cooling the heat transfer takes place directly on the conductors outside of the stator laminations in the area of the winding overhangs into the fluid.
  • electrical contacting bodies are usually provided which, for example, allow electrical conductors to be attached or plugged in and connect them both electrically and mechanically.
  • a defined prestressing force of the contact is required for this.
  • the preload force is limited by the mechanical load-bearing capacity of the connecting element and the contact area.
  • the mechanical load-bearing capacity of the connecting element is achieved, for example, by strain hardening, the addition of foreign atoms or precipitation hardening. However, these measures impede the flow of electrons in the material. Both The materials used are therefore in conflict with good electrical conductivity and good mechanical load-bearing capacity.
  • the object of the invention is to provide an electrical machine that has reliable electrical and mechanical contact between a wet side and a dry side. Furthermore, the electrical machine should be able to be manufactured inexpensively and be easy to assemble.
  • an electrical machine in particular for an electrically operated drive train of a motor vehicle, comprising a rotor which is mounted rotatably relative to a stator, the rotor having a rotor shaft with at least one rotor body arranged on the rotor shaft in a rotationally fixed and non-displaceable manner, and the stator having at least comprises a first stator body, the first stator body having a first stator winding which is arranged within a first space which is at least partially enclosed by a delimiting first housing component.
  • An electrical connection element is arranged in the first housing component, which has a contacting body and a receiving sleeve, which extend through the housing component in such a way that a first section of the receiving sleeve protrudes into the first space and a second section of the contacting body from the side facing away from the first space of the first housing component can be contacted.
  • the contacting body is fixed in the receiving sleeve and the receiving sleeve is received in the first housing component.
  • the electrical machine can basically provide a division of the functions of electrical conduction and force absorption of the electrical connection element, so that the power flow is primarily through the contacting body, preferably as an element of mechanically higher load-bearing capacity or strength, and the current flow is primarily through the receiving sleeve, preferably as an element of higher specific electrical conductivity runs.
  • the electrical connection element preferably has the contacting body, which is fixed in the receiving sleeve by means of a press fit.
  • it can be provided to use a bolt pressed into the receiving sleeve or a threaded bush as the contacting body, the main function of which is to support the clamping forces, for example via the supporting cross section and an undercut.
  • the material of the bolt or the threaded bushing advantageously has a higher mechanical load capacity (yield point) than the material of the receiving sleeve.
  • the receiving sleeve for its part preferably has a higher specific electrical conductivity compared to the contacting body.
  • the material of the receiving sleeve is softer and therefore has a lower mechanical load capacity (yield point) than the material of the contacting body.
  • the contacting body designed as a bolt or threaded bush is preferably pressed into the housing component in such a way that the softer material is deformed elastically and plastically, so that the sealing effect is sufficient to seal off the two spaces on either side of the housing component from one another or one space from the environment.
  • a widening of the cross section, which is designed for the deformation of the softer material is particularly preferably provided on the contacting body, for example on the bolt or the threaded bushing.
  • the elastic part of the forming ensures that the contact pressure is maintained and the plastic part of the forming to lengthen the sealing sections in the area provided for this purpose. Excess material from the receiving sleeve is taken up in an area provided for this purpose.
  • the widening of the cross section of the contacting body for example the bolt or the threaded bushing, creates an undercut which counteracts the pull-out of the receiving sleeve.
  • the space for accommodating the excess material during the pressing-in process can preferably also be equipped with additional sealing means or sealing elements and thus further increase the sealing effect.
  • the receiving sleeve with the pressed-in contacting body is particularly preferably mounted in the housing component in an electrically insulated manner.
  • the housing component can be made of an electrically poorly conductive material or an insulating material or it can be inserted into an electrically non-conductive adapter that implements the electrical insulating effect between the housing component and the assembly of contacting body and receiving sleeve.
  • the sealing effect can, for example be achieved via sealing elements between the receiving sleeve and the adjacent housing component or adapter.
  • Electrical machines are used to convert electrical energy into mechanical energy and/or vice versa, and generally include a stationary part referred to as a stator, stand or armature and a part referred to as a rotor or runner and arranged movably relative to the stationary part.
  • a stationary part referred to as a stator, stand or armature
  • a part referred to as a rotor or runner and arranged movably relative to the stationary part.
  • radial flux machines is characterized in that the magnetic field lines extend in the radial direction in the air gap formed between rotor and stator, while in the case of an axial flux machine the magnetic field lines extend in the axial direction in the air gap formed between rotor and stator.
  • the electrical machine according to the invention can be designed as an axial flux machine or radial flux machine.
  • the stator of the electrical machine can be designed in particular as a stator for a radial flux machine.
  • the stator of a radial flux machine is usually constructed cylindrically and preferably consists of electrical laminations that are electrically insulated from one another and are constructed in layers and packaged to form laminations. Distributed over the circumference, grooves and/or channels which run parallel to the rotor shaft and accommodate the stator winding or parts of the stator winding can be let into the electrical steel sheet.
  • the stator designed for a radial flux machine can be designed as a stator for an internal rotor or an external rotor. In the case of an internal rotor, for example, the stator teeth extend radially inwards, while in the case of an external rotor they extend radially outwards.
  • the electric machine according to the invention is intended in particular for use within a drive train of a hybrid or all-electric motor vehicle.
  • the electrical machine is dimensioned in such a way that vehicle speeds of more than 50 km/h, preferably more than 80 km/h and in particular more than 100 km/h can be achieved.
  • the electric machine particularly preferably has a power of more than 30 kW, preferably more than 50 kW and in particular more than 70 kW. It is further preferred that the electric Machine speeds greater than 5,000 rpm, particularly preferably greater than 10,000 rpm, most preferably greater than 12,500 rpm provides.
  • a stator winding is an electrically conductive conductor whose length is significantly greater than its length perpendicular to the length.
  • the stator winding can have any desired cross-sectional shape. Rectangular cross-sectional shapes are preferred, since they can be used to achieve high packing densities and consequently high power densities.
  • a stator winding made of copper is very particularly preferably formed.
  • a stator winding preferably has insulation.
  • mica paper which for mechanical reasons can be reinforced by a glass fabric carrier, can be wound in ribbon form around one or more stator windings, which are impregnated with a hardening resin.
  • the electrical machine is designed as an axial flow machine, comprising the rotor, which is mounted in a dry space so that it can rotate relative to the stator, the rotor connecting the rotor shaft with at least the first disc-shaped rotor shaft, which can be rotated and rotated on the rotor shaft non-displaceably arranged rotor body, wherein the stator comprises the first annular disc-shaped stator body and the second annular disc-shaped stator body, which are arranged coaxially to one another and to the rotor shaft and are spaced apart axially with the rotor being arranged in between.
  • the electrical machine can be designed to be very compact axially.
  • the magnetic flux in such an electric axial flux machine is directed axially in the air gap between the stator and rotor to a direction of rotation of the rotor of the axial flux machine.
  • a known type is a so-called I-arrangement, in which the rotor is arranged axially next to a stator or between two stators.
  • Another known type is a so-called H-arrangement, in which two rotors are arranged on opposite axial sides of a stator.
  • an I-arrangement is preferred.
  • a hydraulic connecting element is formed from an electrically non-conductive material. It can hereby be achieved that a good electrical insulation effect can be provided for electrically conductive components of the electrical machine.
  • the hydraulic connecting element has an essentially cylindrical ring-like three-dimensional shape.
  • the hydraulic connecting element is positioned radially above the first stator body and/or the second stator body.
  • the invention can also be further developed in such a way that the hydraulic connecting element has a first seal which seals the first hydraulic space from the dry space of the rotor and/or the hydraulic connecting element has a second seal which seals the second hydraulic space from the dry space of the rotor .
  • the first seal and/or the second seal are/is formed in one piece with the hydraulic connecting element.
  • the hydraulic connecting element is connected by means of a press fit to a first housing component that at least partially delimits the first hydraulic chamber and/or the hydraulic connecting element is connected by means of a press fit to a second housing component that at least partially delimits the second hydraulic chamber is.
  • a plurality of hydraulic connecting elements is distributed circumferentially between the first hydraulic chamber and the second hydraulic chamber.
  • the invention can also be implemented in an advantageous manner in that the hydraulic connecting elements are designed essentially identically, whereby the component complexity and thus the manufacturing costs of the electrical machine can be reduced.
  • the winding ends of the axial flux machine run in such a way that, when assembled, the winding ends are oriented parallel or approximately parallel to the main axis of the machine.
  • the winding ends are preferably guided to one of the end faces of the axial flow machine through appropriately designed local openings in the axial flow machine and, after the corresponding axial pushing together of the corresponding machine parts, are electrically and mechanically connected in a suitable manner.
  • the winding ends of the stators connected in this way are, in a particularly preferred manner, led to the axially positioned phase connections at the front via connecting conductors.
  • connection conductors can be seamlessly connected to the winding by winding ends or can be suitably electrically and mechanically connected to the winding.
  • the star point or the star points of the machine are preferably not executed up to the phase connection.
  • the material of the contacting body has a higher flow limit than the material of the receiving sleeve.
  • the material of the receiving sleeve has a higher specific electrical conductivity than the material of the contacting body. In this way, in particular, a good plastic connection of the receiving sleeve to a surrounding housing component and also to the contacting body can be provided with a good insulating effect at the same time.
  • the invention can also be further developed to the effect that the press fit between the contacting body and the receiving sleeve is at least has an undercut, so that in particular axial forces can be at least partially supported here.
  • the contacting body has a circumferential groove in the area of the press fit, in which plastically deformed material of the receiving sleeve is received during the formation of the press fit and thereby provides additional axial securing of the contacting body relative to the receiving sleeve.
  • the receiving sleeve has a seal on its outer lateral surface, by means of which the receiving sleeve is sealed off from the housing component, as a result of which the sealing effect can be further optimized.
  • the electrical machine is designed as an axial flow machine, in which the rotor is rotatably mounted in a drying chamber, the rotor shaft having at least a first rotor body which is designed in the shape of a disk and is arranged on the rotor shaft in a rotationally and non-displaceably fixed manner , and the stator comprises a first annular disc-shaped stator body and a second annular disc-shaped stator body which are arranged coaxially with one another and with the rotor shaft and are axially spaced apart from one another with the rotor arranged therebetween, the first stator body having a first stator winding and the second stator body having a second stator winding and the first stator winding are arranged within a first hydraulic chamber and the second stator winding within a second hydraulic chamber, within which the respective stator windings, each of a hydraulic fluid at least can be contacted in sections.
  • FIG. 1 shows an electrical axial flux machine in a schematic axial sectional view
  • FIG. 2 shows a detailed view of an electrical connection element in a schematic sectional view
  • FIG. 3 shows a detailed view of a press fit between the receiving sleeve and the contacting body in a schematic sectional representation
  • FIG. 4 shows a motor vehicle with an electric machine in schematic block diagram representations.
  • FIG. 1 shows an electric machine 1 for an electrically operated drive train 10 of a motor vehicle 11, as shown in FIG. 3 by way of example.
  • the drive train 10 of a hybrid-driven vehicle and in the lower illustration of an all-electrically driven motor vehicle 11, each with an electric machine 1, is shown.
  • the electrical machine 1 comprises a rotor 3 which is mounted rotatably relative to a stator 2 , the rotor 3 having a rotor shaft 30 with at least one rotor body 31 arranged on the rotor shaft 30 in a rotationally and non-displaceably fixed manner.
  • the stator 2 has a first stator body 21, the first stator body 21 having a first stator winding 41, which is arranged within a first hydraulic chamber or wet chamber 51, within which the first stator winding 41 can be contacted by a hydraulic fluid 5 at least in sections, and the first hydraulic chamber 51 is surrounded at least in sections by a delimiting first housing component 91 .
  • the electrical machine is designed as an axial flow machine 1, in which the rotor 3 is rotatably mounted in a drying chamber 32, the rotor shaft 30 having at least one first rotor body which is designed in the shape of a disk and is arranged on the rotor shaft 30 in a rotationally and non-displaceably fixed manner 31, and the stator 2 comprises a first annular disk-shaped stator body 21 and a second annular disk-shaped stator body 22, which are arranged coaxially to one another and to the rotor shaft 30 and are axially spaced apart from one another with the rotor 3 being arranged in between, the first stator body 21 having a first stator winding 41 and the second stator body 22 has a second stator winding 42 and the first stator winding 41 is arranged within a first hydraulic chamber 51 and the second stator winding 42 is arranged within a second hydraulic chamber or wet chamber 52, within which the respective stator windings 41,42 are each surrounded by a hydraulic
  • an electrical connection element 70 is arranged in the first housing component 91, which has a contacting body 71 and a receiving sleeve 73, which extend through the housing component 91 in such a way that a first cylindrical section 77 of the receiving sleeve 77 protrudes into the first hydraulic chamber 51 and a second cylindrical section 72 of the contacting body 71 can be contacted from the side of the first housing component 91 facing away from the first hydraulic chamber 51 .
  • the contacting body 71 is fixed in a receiving sleeve 73 by means of a circumferentially closed press fit, which in turn is held in the first housing component 91 by means of a press fit.
  • the second section 72 of the contacting body 71 is formed as a bolt, in particular a threaded bolt.
  • the second section 72 of the contacting body 71 may be in the form of a bushing, in particular a threaded bushing.
  • the longitudinal extension of the contacting body 71 runs parallel to the axis of rotation of the rotor 30.
  • the electrical connection element 70 is connected to one or more of the electrical conductors 7 of the stator windings 41,42 in the direction of the first or second hydraulic chamber 51,52.
  • electrical conductors 7 of the same phase can be connected to an electrical connection element 70 .
  • the first winding ends 43 of the first stator winding 41 assigned to the same phase and the second winding ends 42 of the second stator winding 42 are connected to the electrical connection element 70 both electrically and mechanically.
  • the connection to the second section 77 of the receiving sleeve 73 can take place, for example, by soldering or welding, or also by means of a detachable connection, such as with a clamp.
  • the first stator winding 41 has first winding ends 43 emerging from the first stator body 21 and extending radially above the stator body 21 in the axial direction.
  • the second stator winding 42 also has second winding ends 44 emerging from the second stator body 22, which extend radially above the first stator body 21 and the second stator body 22 in the axial direction.
  • the first hydraulic chamber 51 is at least partially surrounded by a delimiting first housing component 91, which has a plurality of circumferentially distributed openings 13, 14 for the passage of the second winding ends 44.
  • the first winding ends 43 are arranged in a circular path with a first diameter and the second winding ends 44 are arranged in a circular path with a second diameter, the first diameter being different from the second diameter.
  • the first winding ends 43 and the second winding ends 44 are oriented toward the same axial end face of the axial flux machine 1 and are connected to the same axial end face of the axial flux machine 1 .
  • the first stator winding 41 and the second stator winding 42 are each configured in at least three phases with a star point connection.
  • the electrical machine 1 also has a plurality of hydraulic connecting elements 6 which hydraulically connect the first hydraulic chamber 51 to the second hydraulic chamber 52 . At least one electrical conductor 7 of the second stator winding 42 is arranged within each of the hydraulic connecting elements 6 .
  • the plurality of essentially identically designed hydraulic connecting elements 6 is distributed circumferentially between the first hydraulic chamber 51 and the second hydraulic chamber 52 .
  • the material of the contacting body 71 has a higher yield point than the material of the receiving sleeve 73, while the material of the receiving sleeve 73 has a higher specific electrical conductivity than the material of the contacting body 71.
  • FIG. 3 clearly shows that the press fit between the contacting body 71 and the receiving sleeve 73 has at least one undercut 74, so that an improved axial force absorption can be provided.
  • the contacting body 71 has a circumferential groove 75 in the area of the press fit, into which plastically deformed material of the receiving sleeve 73 can flow during the pressing-in process, thus also improving the axial securing of the contacting body 71 with respect to the Can provide receiving sleeve.
  • the contacting body 71 designed as a bolt is thus pressed into the housing component 91 in such a way that the softer material is deformed elastically and plastically, so that the sealing effect is sufficient to seal the two spaces on both sides of the housing component 91 from one another or one space from the environment.
  • For a cross-sectional expansion is provided on the contacting body 71, which for Forming of the softer material is designed.
  • the elastic part of the forming ensures that the contact pressure is maintained and the plastic part of the forming to lengthen the sealing sections in the area provided for this purpose. Excess material of the receiving sleeve 73 is taken up by the groove 75 .
  • the widening of the cross section of the contacting body 71 creates an undercut 74 which counteracts the extraction of the receiving sleeve 73 .
  • FIG. 2 also shows that the receiving sleeve 73 has a seal 76 on its outer lateral surface, by means of which the receiving sleeve 73 is sealed off from the housing component 91 .
  • the seal 76 it would also be conceivable for the seal 76 to have an axial sealing seat and not, as shown in FIG. 2, a radial sealing seat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne une machine électrique, en particulier pour une chaîne cinématique électrique d'un véhicule automobile, comprenant un rotor monté rotatif par rapport à un stator, le rotor ayant un arbre de rotor avec au moins un élément de rotor qui est agencé de façon non coulissante sur l'arbre de rotor pour une rotation conjointe avec celui-ci, le stator ayant au moins un premier élément de stator, le premier élément de stator ayant un premier enroulement de stator qui est agencé à l'intérieur d'une première chambre (51) dont au moins une partie est entourée par un premier composant de boîtier de délimitation (91). Le premier composant de boîtier (91) contient un élément de connexion électrique (70) qui comprend un élément de mise en contact (71) et un manchon de réception (73) qui s'étendent à travers le composant de boîtier (91) de telle sorte qu'une première partie (77) du manchon de réception (73) fait saillie dans la première chambre (51) et une deuxième partie (72) de l'élément de mise en contact (71) peut être mise en contact avec le côté du premier composant de boîtier (91) opposé à la première chambre (51). L'élément de mise en contact (71) est attaché dans le manchon de réception (73), et le manchon de réception (73) est logé dans le premier composant de boîtier (91).
EP22718053.6A 2021-04-10 2022-04-08 Machine électrique Pending EP4320714A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021108951.4A DE102021108951A1 (de) 2021-04-10 2021-04-10 Elektrische Maschine
PCT/DE2022/100263 WO2022214141A1 (fr) 2021-04-10 2022-04-08 Machine électrique

Publications (1)

Publication Number Publication Date
EP4320714A1 true EP4320714A1 (fr) 2024-02-14

Family

ID=81384742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22718053.6A Pending EP4320714A1 (fr) 2021-04-10 2022-04-08 Machine électrique

Country Status (5)

Country Link
US (1) US20240204609A1 (fr)
EP (1) EP4320714A1 (fr)
CN (1) CN117121349A (fr)
DE (1) DE102021108951A1 (fr)
WO (1) WO2022214141A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022133850A1 (de) * 2022-12-19 2024-06-20 Schaeffler Technologies AG & Co. KG Elektrische Axialflussmaschine

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US20100216332A1 (en) * 2009-02-20 2010-08-26 Rudolph Garriga Systems and methods for power connection
DE102015013018A1 (de) 2015-10-07 2017-04-13 Audi Ag Stator für eine elektrische Maschine
EP3157138B1 (fr) 2015-10-12 2018-07-25 Siemens Aktiengesellschaft Procede de refroidissement d'un paquet de toles, paquet de toles, rotor, stator et machine electrique
DE102017207215A1 (de) 2017-04-28 2018-10-31 Zf Friedrichshafen Ag Anschlusseinrichtung
CA3103722A1 (fr) 2018-06-15 2019-12-19 Indigo Technologies, Inc. Moteur a flux axial etanche a refroidissement integre
CN112383193B (zh) * 2020-11-20 2022-08-05 安徽大学 一种内置集成双轴流风机的油冷轴向磁通电机

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Publication number Publication date
US20240204609A1 (en) 2024-06-20
WO2022214141A1 (fr) 2022-10-13
DE102021108951A1 (de) 2022-10-13
CN117121349A (zh) 2023-11-24

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