WO2020048776A1 - Coupling system for establishing an electrically conductive connection - Google Patents

Coupling system for establishing an electrically conductive connection Download PDF

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Publication number
WO2020048776A1
WO2020048776A1 PCT/EP2019/072315 EP2019072315W WO2020048776A1 WO 2020048776 A1 WO2020048776 A1 WO 2020048776A1 EP 2019072315 W EP2019072315 W EP 2019072315W WO 2020048776 A1 WO2020048776 A1 WO 2020048776A1
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WO
WIPO (PCT)
Prior art keywords
stator
coupling system
housing
electrically conductive
conductive connection
Prior art date
Application number
PCT/EP2019/072315
Other languages
German (de)
French (fr)
Inventor
Rainer SCHÜTZ
Marco Toneatto
Original Assignee
Voith Patent 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 Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2020048776A1 publication Critical patent/WO2020048776A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—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

Definitions

  • Coupling system for establishing an electrically conductive connection
  • the invention relates to a coupling system for producing an electrically conductive connection, in particular for connecting an electric drive motor to the frequency converter in a hybrid drive train.
  • a generic hybrid drive train comprises an internal combustion engine, a transmission and an electric drive motor or electric machine arranged between them.
  • the power supply or the regulation of the e-machine takes place via a frequency converter, which is usually not directly attached to the e-machine housing, in particular in order to achieve temperature decoupling.
  • the electrical machine which is arranged in a housing, is connected to the frequency converter by means of appropriate power cables. These power cables have cable lugs with a through hole on both sides, so that an electrically safe connection to the electric machine and the frequency converter can be established by means of a screw connection.
  • this cable connection has proven to be very complex and relatively unfriendly to assembly.
  • a passage through the housing in which the electric machine is installed is required to establish the current-conducting connection.
  • One of the objects of the invention is to propose a coupling system for establishing an electrically conductive connection, which permits an improved and more easily assembled coupling of electrical components.
  • a coupling system for producing an electrically conductive connection between two electrical components is proposed, one component being a stator of an electric machine positioned in a housing.
  • the electrically conductive connection leads through the housing wall of the electric motor housing.
  • the electrically conductive connection consists of three elements, the elements being designed as rigid elements.
  • the elements consisting of a busbar, a lead-through conductor element and a stator connecting conductor, are connected by means of a screw connection comprising a screw and a nut.
  • an insulator which can be plugged into a housing opening, the insulator having a receptacle for rotationally fixed fixing of the screw.
  • the insulator is preferably also designed in such a way that the screw and the lead-through conductor element can be fitted by inserting it into the insulator.
  • a recess is also provided in the insulator, into which the stator connecting conductor of the stator can be inserted.
  • stator connecting conductor can have a recess, so that the stator and the stator connecting conductor coupled to it can be mounted by pushing the stator into the housing of the electric machine.
  • the combination of the features enables the coupling system to be easily installed. Except for the stator connection conductor coupled to the stator, all components of the coupling system can be mounted from outside the housing or inserted into the housing opening. Stops on the components ensure that no component is inserted too far into the housing opening.
  • the current rail which is provided for electrical coupling to the frequency converter, runs outside the housing in the proposed construction.
  • FIG. 1 shows the coupling system 1 according to the invention in detail without going into detail about the drive train for the motor vehicle, which should be generally known. Only the electrical drive module unit and the control unit or the housing of the frequency converter 2 with the frequency converter 15 indicated are shown. The arrangement of the control unit on the transmission cannot be seen either.
  • the coupling system 1 shown is used to establish an electrically conductive connection between the frequency converter 15 and the windings of the stator 14 of the electric machine.
  • the coupling system 1 shown shows the electrically conductive connection, consisting of three elements, the busbar 4, the feed-through conductor element 7 and the stator connecting conductor 9, which are connected by means of a screw connection 8a, b to form a continuous electrical conductor.
  • the construction of the insulator 6 ensures that the screw connection only fixes the three elements to one another.
  • the coupling system 1 can be assembled, for example, as follows.
  • the screw head of the screw 8a is inserted into the receptacle 5 of the insulator 6, so that the screw 8a is fixed in a rotationally fixed manner.
  • the feed-through conductor element 7 is then inserted into the insulator 6.
  • the preassembled unit can now be inserted into the housing 3, a seal 13 being provided for sealing.
  • the stator 14 with the stator connecting conductor 9 is then inserted into the housing.
  • the stator connecting conductor 9 has one end, as shown in FIG. 2, with a recess 11, so that the stator connecting conductor 9 fits between the screw head and the lead-through conductor element 7. A corresponding recess 10 is provided for this in the insulator 6.
  • busbar 4 is mounted as shown and the nut 8b is tightened, as a result of which a secure mechanical and electrical connection is established between the three elements.
  • the screw connection of the busbar 4 to the power connection of the frequency converter 15 is shown here only as an example.
  • the proposed coupling system has a simple structure and offers compensation options for tolerances in the radial and axial directions. Furthermore, no parts, especially the screw, e.g. disassembly, fall into the housing.
  • this coupling system is insensitive to vibrations, which increases the system availability because, for example, there are no cable breaks due to the vibrations.

Abstract

The invention relates to a coupling system for establishing an electrically conductive connection between two electrical components, one component being a stator of an electrical machine, which stator is positioned in a housing. The electrically conductive connection leads through the housing wall of the electric motor housing. According to the invention, a coupling system is proposed, in the case of which the electrically conductive connection consists of three elements, the elements being in the form of rigid elements.

Description

Koppelsystem zur Herstellung einer elektrisch leitenden Verbindung  Coupling system for establishing an electrically conductive connection
Die Erfindung betrifft ein Koppelsystem zur Herstellung einer elektrisch leitenden Ver- bindung, insbesondere zur Verbindung eines elektrischen Antriebsmotors mit dem Frequenzumrichter in einem Hybridantriebsstrang. The invention relates to a coupling system for producing an electrically conductive connection, in particular for connecting an electric drive motor to the frequency converter in a hybrid drive train.
Ein gattungsgemäßer Hybridantriebsstrang umfasst einen Verbrennungsmotor, ein Getriebe und einen dazwischen angeordneten elektrischen Antriebsmotor bzw. E- Maschine. Die Stromversorgung bzw. die Regelung der E-Maschine erfolgt über ei- nen Frequenzumrichter, der meist nicht direkt an dem E-Maschinengehäuse befestigt ist, insbesondere deshalb um eine Temperaturentkopplung zu erreichen. Die Verbin- dung der E-Maschine, die in einem Gehäuse angeordnet ist, mit den Frequenzum- richter erfolgt über entsprechende Leistungskabel. Diese Leistungskabel haben an beiden Seiten Kabelschuhe mit einem Durchgangsloch, so dass mittels einer Schrau- benverbindung eine elektrisch sichere Verbindung zur E-Maschine und zum Frequen- zumrichter hergestellt werden kann. A generic hybrid drive train comprises an internal combustion engine, a transmission and an electric drive motor or electric machine arranged between them. The power supply or the regulation of the e-machine takes place via a frequency converter, which is usually not directly attached to the e-machine housing, in particular in order to achieve temperature decoupling. The electrical machine, which is arranged in a housing, is connected to the frequency converter by means of appropriate power cables. These power cables have cable lugs with a through hole on both sides, so that an electrically safe connection to the electric machine and the frequency converter can be established by means of a screw connection.
Diese Kabelverbindung hat sich in der Praxis als sehr aufwendig und relativ monta- geunfreundlich herausgestellt. Insbesondere wenn zur Herstellung der stromleitenden Verbindung eine Durchführung durch das Gehäuse in dem die E-Maschinen einge- baut ist erforderlich ist. In practice, this cable connection has proven to be very complex and relatively unfriendly to assembly. In particular, if a passage through the housing in which the electric machine is installed is required to establish the current-conducting connection.
Eine der Aufgaben der Erfindung ist es, ein Koppelsystem zur Herstellung einer elektrisch leitenden Verbindung vorzuschlagen, das eine verbesserte und montage- freundlichere Kopplung elektrischer Komponenten erlaubt. One of the objects of the invention is to propose a coupling system for establishing an electrically conductive connection, which permits an improved and more easily assembled coupling of electrical components.
Die Aufgabe wird erfindungsgemäß durch eine Ausführung entsprechend Anspruch 1 gelöst. Weitere vorteilhafte Merkmale der erfindungsgemäßen Ausführung finden sich in den Unteransprüchen. Es wird ein Koppelsystem zur Herstellung einer elektrisch leitenden Verbindung zwi- schen zwei elektrischen Komponenten vorgeschlagen, wobei eine Komponente ein in einem Gehäuse positionierter Stator einer E-Maschine ist. Die elektrisch leitende Verbindung führt durch die Gehäusewand des E-Motorgehäuses. The object is achieved by an embodiment according to claim 1. Further advantageous features of the embodiment according to the invention can be found in the subclaims. A coupling system for producing an electrically conductive connection between two electrical components is proposed, one component being a stator of an electric machine positioned in a housing. The electrically conductive connection leads through the housing wall of the electric motor housing.
Erfindungsgemäß wird ein Koppelsystem vorgeschlagen, bei dem die elektrisch lei tende Verbindung aus drei Elementen besteht, wobei die Elemente als starre Elermen- te ausgeführt sind. According to the invention, a coupling system is proposed in which the electrically conductive connection consists of three elements, the elements being designed as rigid elements.
In einer bevorzugten Ausführung erfolgt die Verbindung der Elemente, bestehend aus einer Stromschiene, einem Durchführleiterelement und einem Statoranschlußleiter, mittels einer Schraubenverbindung, umfassend eine Schraube und eine Mutter. In a preferred embodiment, the elements, consisting of a busbar, a lead-through conductor element and a stator connecting conductor, are connected by means of a screw connection comprising a screw and a nut.
Weiterhin ist ein Isolator vorgesehen, der in eine Gehäuseöffnung steckbar ist, wobei der Isolator eine Aufnahme zur drehfesten Fixierung der Schraube aufweist. Vor- zugsweise ist der Isolator weiterhin derart gestaltet, das die Schraube und das Durch- führleiterelement durch einstecken in den Isolator montierbar sind. Furthermore, an insulator is provided which can be plugged into a housing opening, the insulator having a receptacle for rotationally fixed fixing of the screw. The insulator is preferably also designed in such a way that the screw and the lead-through conductor element can be fitted by inserting it into the insulator.
In einer bevorzugten Ausgestaltung ist im Isolator weiterhin eine Aussparung vorge- sehen, in die der Statoranschlußleiter des Stators steckbar ist. In a preferred embodiment, a recess is also provided in the insulator, into which the stator connecting conductor of the stator can be inserted.
Weiterhin kann der Statoranschlußleiter eine Aussparung aufweisen, so dass der Sta- tor und die mit diesem gekoppelte Statoranschlußleiter durch einschieben des Stators in das Gehäuse der E-Maschine montierbar ist. Insbesondere die Kombination der Merkmale ermöglicht eine einfache Montage des Koppelsystems. Bis auf den mit dem Stator gekoppelten Statoranschlußleiter können alle Bauteile des Koppelsystems von außerhalb des Gehäuses montiert werden bzw. in die Gehäuseöffnung gesteckt wer- den. Anschläge an den Bauteilen sorgen dafür, dass kein Bauteil zu weit in die Ge- häuseöffnung gesteckt wird. Die Stromschiene, die zur elektrischen Koppelung mit dem Frequenzumrichter vorge- sehen ist, verläuft bei dem vorgeschlagen Aufbau außerhalb des Gehäuses. Anhand von Ausführungsbeispielen werden weitere vorteilhafte Ausprägungen der Erfindung erläutert unter Bezugnahme auf die Zeichnungen. Die genannten Merkmale können nicht nur in der dargestellten Kombination vorteilhaft umgesetzt werden, son- dern auch einzeln untereinander kombiniert werden. Furthermore, the stator connecting conductor can have a recess, so that the stator and the stator connecting conductor coupled to it can be mounted by pushing the stator into the housing of the electric machine. In particular, the combination of the features enables the coupling system to be easily installed. Except for the stator connection conductor coupled to the stator, all components of the coupling system can be mounted from outside the housing or inserted into the housing opening. Stops on the components ensure that no component is inserted too far into the housing opening. The current rail, which is provided for electrical coupling to the frequency converter, runs outside the housing in the proposed construction. Based on exemplary embodiments, further advantageous features of the invention are explained with reference to the drawings. The features mentioned can not only be advantageously implemented in the combination shown, but can also be combined individually with one another.
Die Figuren zeigen im Einzelnen: The figures show in detail:
Fig.1 das erfindungsgemäße Koppelsystem im Detail 1 shows the coupling system according to the invention in detail
Fig.2 eine Stromschiene in der Draufsicht Figur 1 zeigt das erfindungsgemäße Koppelsystem 1 in Detail ohne näher auf den Antriebsstrang für das Kraftfahrzeug einzugehen, der allgemein bekannt sein dürfte. So sind nur die elektrische Antriebsmoduleinheit und die Ansteuereinheit bzw. das Gehäuse des Frequenzumrichters 2 mit dem angedeuteten Frequenzumrichter 15 dargestellt. Auch nicht zu erkennen ist die Anordnung der Ansteuereinheit am Getrie- be.  2 shows a busbar in plan view. FIG. 1 shows the coupling system 1 according to the invention in detail without going into detail about the drive train for the motor vehicle, which should be generally known. Only the electrical drive module unit and the control unit or the housing of the frequency converter 2 with the frequency converter 15 indicated are shown. The arrangement of the control unit on the transmission cannot be seen either.
Das dargestellte Koppelsystem 1 dient der Herstellung einer elektrisch leitenden Ver- bindung zwischen dem Frequenzumrichter 15 und den Wicklungen des Stators 14 der E-Maschine. The coupling system 1 shown is used to establish an electrically conductive connection between the frequency converter 15 and the windings of the stator 14 of the electric machine.
Das dargestellte Koppelsystem 1 zeigt die elektrisch leitende Verbindung, bestehend aus drei Elementen, der Stromschiene 4, dem Durchführleiterelement 7 und dem Statoranschlußleiter 9, die mittels einer Schraubenverbindung 8a, b zu einem durch- gehendem elektrischen Leiter verbunden sind. Durch den Aufbau des Isolators 6 ist gewährleistet, dass die Verschraubung nur die drei Elemente zueinander fixiert. The coupling system 1 shown shows the electrically conductive connection, consisting of three elements, the busbar 4, the feed-through conductor element 7 and the stator connecting conductor 9, which are connected by means of a screw connection 8a, b to form a continuous electrical conductor. The construction of the insulator 6 ensures that the screw connection only fixes the three elements to one another.
Die Montage des Koppelsystems 1 kann beispielhaft wie folgt erfolgen. In einem ers- ten Schritt wird der Schraubenkopf der Schraube 8a in die Aufnahme 5 des Isolators 6 eingeführt, so dass die Schraube 8a drehfest fixiert ist. Anschließend wird das Durchführleiterelement 7 in den Isolator 6 gesteckt. Die vormontierte Einheit kann nun in das Gehäuse 3 eingesteckt werden, wobei eine Dichtung 13 zur Abdichtung vorge- sehen ist. ln das Gehäuse wird anschließend der Stator 14 mit dem Statoranschlußleiter 9 ein- geschoben. Der Statoranschlußleiter 9 weist ein Ende, wie in Figur 2 dargestellt, mit einer Aussparung 11 auf, so dass der Statoranschlußleiter 9 zwischen Schraubenkopf und Durchführleiterelement 7 passt. Im Isolator 6 ist dafür eine entsprechende Aus- sparung 10 vorgesehen. The coupling system 1 can be assembled, for example, as follows. In a first step, the screw head of the screw 8a is inserted into the receptacle 5 of the insulator 6, so that the screw 8a is fixed in a rotationally fixed manner. The feed-through conductor element 7 is then inserted into the insulator 6. The preassembled unit can now be inserted into the housing 3, a seal 13 being provided for sealing. The stator 14 with the stator connecting conductor 9 is then inserted into the housing. The stator connecting conductor 9 has one end, as shown in FIG. 2, with a recess 11, so that the stator connecting conductor 9 fits between the screw head and the lead-through conductor element 7. A corresponding recess 10 is provided for this in the insulator 6.
Anschließend wird die Stromschiene 4 wie dargestellt montiert und die Mutter 8b an- gezogen, wodurch eine sichere mechanische und elektrische Verbindung zwischen den drei Elementen entsteht. Die Verschraubung der Stromschiene 4 mit dem Stromanschluss des Frequenzumrichters 15 ist hier nur beispielhaft dargestellt. Then the busbar 4 is mounted as shown and the nut 8b is tightened, as a result of which a secure mechanical and electrical connection is established between the three elements. The screw connection of the busbar 4 to the power connection of the frequency converter 15 is shown here only as an example.
Das vorgeschlagene Koppelsystem ist einfach aufgebaut und bietet in Radialrichtung und Axialrichtung Ausgleichmöglichkeiten für Toleranzen. Weiterhin können keine Teile, insbesondere die Schraube, bei z.B. der Demontage, in das Gehäuse fallen. The proposed coupling system has a simple structure and offers compensation options for tolerances in the radial and axial directions. Furthermore, no parts, especially the screw, e.g. disassembly, fall into the housing.
Im Gegensatz zu einer Kabelverbindung ist dieses Koppelsystem unempfindlich ge- genüber Schwingungen, was die Systemverfügbarkeit erhöht, weil beispielsweise keine Kabelbrüche aufgrund der Schwingungen auftreten. In contrast to a cable connection, this coupling system is insensitive to vibrations, which increases the system availability because, for example, there are no cable breaks due to the vibrations.
Weiterhin ist die Anzahl der elektrischen Schnittstellen gegenüber dem Stand der Technik mit Leistungskabeln verringert worden. Jede elektrische Schnittstelle erhöht das Fehlerpotential des Systems, was bei diesen hohen Strömen im Extremfall zu Bränden führen kann.  Furthermore, the number of electrical interfaces compared to the prior art with power cables has been reduced. Every electrical interface increases the system's potential for errors, which in extreme cases can lead to fires at these high currents.
Zudem ist der benötigte Bauraum geringer. In addition, the installation space required is smaller.
Bezugszeichenliste Reference list
1 Steckverbindung 1 connector
2 Gehäuse Frequenzumrichter2 housing frequency converter
3 Gehäuse E-Maschine 3 housing electric machine
4 Stromschiene  4 track
5 Aufnahme  5 recording
6 Isolator  6 isolator
7 Durchführleiterelement7 feed-through ladder element
8a, b Schraubenverbindung 8a, b screw connection
9 Statoranschlußleiter  9 stator connection conductor
10 Aussparung  10 recess
1 1 Aussparung 1 1 recess
12 Anschlussschraube 12 connecting screw
13 Dichtung  13 seal
14 Stator  14 stator
15 Frequenzumrichter  15 frequency converters

Claims

Patentansprüche Claims
1. Koppelsystem (1 ) zur Herstellung einer elektrisch leitenden Verbindung (4, 7, 9) zwischen zwei elektrischen Komponenten (14, 15), wobei eine Komponente ein in einem Gehäuse (3) positionierter Stator (14) einer1. Coupling system (1) for establishing an electrically conductive connection (4, 7, 9) between two electrical components (14, 15), one component being a stator (14) positioned in a housing (3)
E-Maschine ist, und die elektrisch leitende Verbindung (4, 7, 9) durch die Gehäusewand des E-Motorgehäuses (3) führt, Is electric machine, and the electrically conductive connection (4, 7, 9) through the housing wall of the electric motor housing (3),
dadurch gekennzeichnet,  characterized,
dass die elektrisch leitende Verbindung (4, 7, 9) aus drei Elementen (4, 7, 9) besteht, wobei die Elemente (4, 7, 9) als starre Elemente aus- geführt sind.  that the electrically conductive connection (4, 7, 9) consists of three elements (4, 7, 9), the elements (4, 7, 9) being designed as rigid elements.
2. Koppelsystem (1 ) nach Anspruch 1 2. coupling system (1) according to claim 1
dadurch gekennzeichnet,  characterized,
dass die Verbindung der Elemente (4, 7, 9), bestehend aus Strorm- schiene (4), Durchführleiterelement (7) und Statoranschlußleiter (9), mittels einer Schraubenverbindung (8a, b) erfolgt.  that the connection of the elements (4, 7, 9), consisting of the current rail (4), lead-through conductor element (7) and stator connection conductor (9), is carried out by means of a screw connection (8a, b).
3. Koppelsystem (1 ) nach Anspruch 1 , 3. coupling system (1) according to claim 1,
dadurch gekennzeichnet,  characterized,
dass ein Isolator (6) vorgesehen ist, der in eine Gehäuseöffnung steckbar ist, wobei der Isolator eine Aufnahme (5) zur drehfesten Fixie- rung der Schraube (8a) aufweist.  that an insulator (6) is provided which can be inserted into a housing opening, the insulator having a receptacle (5) for the rotationally fixed fixing of the screw (8a).
4. Koppelsystem (1 ) nach Anspruch 3, 4. coupling system (1) according to claim 3,
dadurch gekennzeichnet,  characterized,
dass der Isolator (6) derart gestaltet ist, dass die Schraube (8a) und das Durchführleiterelement (7) durch einstecken in den Isolator (6) montierbar sind.  that the insulator (6) is designed in such a way that the screw (8a) and the lead-through conductor element (7) can be fitted by inserting it into the insulator (6).
5. Koppelsystem (1 ) nach Anspruch 3, 5. coupling system (1) according to claim 3,
dadurch gekennzeichnet, dass der Isolator (6) eine Aussparung (10) aufweist, in die der Stator- anschlußleiter (9) des Stators (14) steckbar ist. characterized, that the insulator (6) has a recess (10) into which the stator connecting conductor (9) of the stator (14) can be inserted.
6. Koppelsystem (1 ) nach Anspruch 5, 6. coupling system (1) according to claim 5,
dadurch gekennzeichnet,  characterized,
dass der Statoranschlußleiter (9) eine Aussparung (11 ) aufweist, so dass der Stator (14) und die mit diesem gekoppelte Statoranschlußlei- ter (9) durch einschieben des Stators (14) in das Gehäuse der E- Maschine (3) montierbar ist.  that the stator connecting conductor (9) has a recess (11) so that the stator (14) and the stator connecting conductor (9) coupled to it can be mounted by inserting the stator (14) into the housing of the electric machine (3) .
7. Koppelsystem (1 ) nach Anspruch 2, 7. coupling system (1) according to claim 2,
dadurch gekennzeichnet,  characterized,
dass die Stromschiene (4) zur elektrischen Koppelung mit dem Fre- quenzumrichter (15) vorgesehen ist, wobei die Stromschiene (4) au- ßerhalb des Gehäuses (3) verläuft.  that the busbar (4) is provided for electrical coupling to the frequency converter (15), the busbar (4) running outside the housing (3).
8. Antriebsstrang für ein Kraftfahrzeug umfassend eine elektrische An- triebsmoduleinheit, eine Ansteuereinheit und ein Getriebe, wobei die Ansteuereinheit am Getriebe angeordnet ist und über ein Koppelsys- tem (1 ) zur Herstellung einer elektrisch leitenden Verbindung nach ei- nem der Ansprüche 1 bis 7 mit dem Stator (14) der E-Maschine ver- bunden ist. 8. Drive train for a motor vehicle comprising an electrical drive module unit, a control unit and a gearbox, the control unit being arranged on the gearbox and via a coupling system (1) for establishing an electrically conductive connection according to one of claims 1 to 7 is connected to the stator (14) of the electric machine.
PCT/EP2019/072315 2018-09-04 2019-08-21 Coupling system for establishing an electrically conductive connection WO2020048776A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018121467.7 2018-09-04
DE102018121467.7A DE102018121467A1 (en) 2018-09-04 2018-09-04 Coupling system for establishing an electrically conductive connection

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DE102021207895A1 (en) 2021-07-22 2023-01-26 Volkswagen Aktiengesellschaft Space-optimized high-voltage coupling
DE102022123279A1 (en) 2022-09-13 2024-03-14 Schaeffler Technologies AG & Co. KG Electric machine and method for assembling an electric machine

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US3850501A (en) * 1973-04-09 1974-11-26 Gen Electric Feedthrough electrical terminal for hollow liquid cooled shaft of a dynamoelectric machine
DE3841528A1 (en) * 1988-12-09 1990-06-13 Bosch Gmbh Robert POLGE HOUSING FOR THE FIELD CONNECTION OF A TURNING DEVICE
DE4008328A1 (en) * 1990-03-15 1991-09-19 Pfisterer Elektrotech Karl Star connecting system for motor windings - has insulated pillars with threaded ends for nut-attached sleeve
DE102014201190A1 (en) * 2014-01-23 2015-07-23 Zf Friedrichshafen Ag Connecting arrangement for power connection of an electrical machine
EP3357727A1 (en) * 2015-09-28 2018-08-08 NIO Nextev Limited Electric drive system for motor vehicle and motor vehicle using same

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