WO2019076540A1 - Stator of an electric machine - Google Patents

Stator of an electric machine Download PDF

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Publication number
WO2019076540A1
WO2019076540A1 PCT/EP2018/074430 EP2018074430W WO2019076540A1 WO 2019076540 A1 WO2019076540 A1 WO 2019076540A1 EP 2018074430 W EP2018074430 W EP 2018074430W WO 2019076540 A1 WO2019076540 A1 WO 2019076540A1
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WO
WIPO (PCT)
Prior art keywords
sensor element
sensor
receptacle
conductor
stator
Prior art date
Application number
PCT/EP2018/074430
Other languages
German (de)
French (fr)
Inventor
Armin Elser
Klaus Lindner
Johannes Riedl
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2019076540A1 publication Critical patent/WO2019076540A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations

Definitions

  • the invention relates to a stator of an electric machine according to the preamble of the main claim.
  • Conductor elements is formed, a plurality of which are arranged in grooves of the stator, said extending in the grooves conductor elements for forming a winding head with conductor ends projecting from the grooves, and with a temperature sensor whose
  • Sensor element is arranged in a sensor element receptacle of a winding element extending on the winding head and held in the sensor element receptacle by a casting resin. The heat transfer between the temperature sensor and the
  • the temperature sensor by casting with the casting resin is not or only consuming interchangeable.
  • the spring element reduces the gap between the sensor element and the sensor element receptacle and increases the heat transfer surface between the sensor element and the sensor element receptacle.
  • an easier replacement of the temperature sensor is made possible.
  • the fixing element is a spring element which presses the sensor element of the temperature sensor into the sensor element receptacle.
  • the spring element may be formed integrally with a separate element or on the relevant conductor element.
  • the spring element is metallic.
  • the metallic spring element improves the heat transfer, since metal is a good conductor of heat.
  • the spring element is made of a spring material, in particular a spring steel, since the sensor element can be pressed against the sensor element receptacle with high spring force in this manner. As a result, a reliable attachment of the temperature sensor and a good heat transfer between the sensor element and the sensor element receptacle is achieved.
  • the spring element is fastened to the conductor element holding the sensor element, in particular to the sensor element receptacle of this conductor element, since the spring element can be attached particularly easily in this way.
  • the spring element is clamp-shaped or clip-shaped to form a positive and releasable attachment of the
  • the spring element and / or the sensor element has protruding fixing means which prevent the sensor element from slipping in the sensor element receptacle. In this way, the sensor element is reliably held in position in the sensor element receptacle.
  • the sensor element receptacle is U-shaped or V-shaped or formed as a curved tab.
  • V-shaped design can be
  • Sensor elements with different dimensions are mounted in the sensor element recording, since there are not parallel legs or flanks. It is advantageous if a further receptacle is provided on the conductor element holding the sensor element, which receptacle is spaced apart from the sensor element receptacle in the longitudinal direction of the temperature sensor element and is provided for mounting a sensor cable of the temperature sensor. In this way, the flexible cable of the
  • the further receptacle may be formed on the sensor element receptacle. It is also advantageous if the sensor element holding the conductor element as
  • Busbar is formed at the a star point connection or a
  • Phase connection is formed. On such a conductor element, the
  • Fig.l shows a stator of an electric machine
  • FIG.l A partial view of a winding head of the stator according to Fig.l with the
  • FIG. 3 shows a sectional view through the sensor element receptacle of the temperature sensor holding conductor element along the line III-III in Figure 2 and
  • Fig.l shows a stator of an electric machine.
  • the stator 1 of an electrical machine has an electrical winding 2, which is formed as a plug-in winding of a plurality of conductor elements 3, of which a plurality are arranged in grooves 4 of the stator 1.
  • the extending in the grooves 4 of the stator 1 conductor elements 3 project with conductor ends 3.1 of the grooves 4 and thereby form at the end faces of the stator 1 each have a winding 5, to which the conductor ends 3.1 of the conductor elements 3 interconnected to form the electrical winding 2 or can be connected.
  • FIG. 2 shows a partial view of the winding head 5 of the stator 1 according to Fig.l with a
  • the temperature sensor 6 has a sensor element 6.1, with which the temperature is detected and which is arranged in a sensor element receptacle 9 of a winding element 5 extending on the conductor element 3.
  • the sensor element 6.1 can be any temperature sensor element, for example an NTC or a PTC element.
  • the sensor element 6.1 comprises an encapsulation or a sensor element housing for protecting the sensor element 6.1.
  • the sensor element 6.1 of the temperature sensor 6 is held in the sensor element receptacle 9 by a fixing element 10.
  • the fixing element 10 is a spring element which presses the sensor element 6.1 of the temperature sensor 6 into the sensor element receptacle 9 with a spring force. In this way, the heat transfer between the
  • Temperature sensor 6 and the sensor element receptacle 9 improves and thereby increases the measurement dynamics in the temperature measurement.
  • the spring element 10 reduces the gap and increases the heat transfer area between the sensor element 6.1 and the sensor element receptacle 9.
  • the spring element 10 may be formed integrally with a separate element or on the respective conductor element 3.
  • the spring element 10 is designed, for example, metallic, in order to achieve a good heat conduction in the spring element 10.
  • the spring element 10 made of a spring material, in particular a spring steel, manufactured and designed as a spring plate.
  • the spring element 10 is on the conductor element 3 holding the sensor element 6.1, in particular attached to the sensor element receptacle 9 of this conductor element 3, for example
  • the spring element 10 may be formed in a clip-shaped or clip-shaped manner and bear against the sensor element receptacle 9 over a large area in order to ensure good heat transfer from the sensor element-carrying conductor element 3 via the spring element 10
  • fixing means can be provided to prevent slippage of the sensor element 6.1 in the sensor element receptacle 9.
  • the sensor element receptacle 9 may be formed on the sensor element-carrying conductor element 3 U-shaped or V-shaped or as a curved tab, so that the
  • Sensor element 6.1 can be easily inserted into the sensor element receptacle 9 and then fixed by the assembly of the spring element 10.
  • FIG. 4 shows a view of the sensor element receptacle 9 having conductor element according to Fig.2.
  • a further receptacle 12 may be provided, seen in the longitudinal direction of the temperature sensor 6 for
  • Sensor element receptacle 9 spaced and is provided for holding a leading sensor element 6.1 sensor cable 15.
  • the sensor element receptacle 9 may comprise the further receptacle 12.
  • the sensor cable 15 may be secured in the further receptacle 12 by a spring element corresponding to the spring element 10 of the sensor element receptacle 9 or in another way.
  • the sensor element receptacle 9 having conductor element 3 may be any conductor element of the electrical plug-in winding. According to the exemplary embodiment, this conductor element 3 is designed as a busbar on which a star point connection or a phase connection or a phase connection is made.
  • the temperature sensor 6 may be aligned at the sensor element receiving 9 having conductor element 3 in the axial direction with respect to a stator axis of the stator 1 1.1 or in a plane parallel to the end face of the stator 1.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

A stator of an electric machine is already known, having an electrical winding, which is formed as a plug-in winding from a plurality of conductor elements, of which a plurality are arranged in slots of the stator, wherein the conductor elements extending in the slots protrude out of the slots to form a winding head having conductor ends, and having a temperature sensor, the sensor element of which is arranged in a sensor element receptacle of a conductor element extending on the winding head and is held in the sensor element receptacle by a casting resin. The heat transfer between the temperature sensor and the sensor element receptacle is not optimal because a gap filled with casting resin or air can be formed between the temperature sensor and the sensor element receptacle. As a result, the temperature measured by the temperature sensor follows the temperature actually present on the winding head with a comparably long temporal delay, resulting in comparably low measurement dynamics. In addition, the temperature sensor cannot be replaced or is difficult to replace due to casting with the casting resin. In the stator according to the invention, the heat transfer between the temperature sensor and the sensor element receptacle is improved, increasing the measurement dynamics of the temperature measurement as a result. According to the invention, the fixing element (10) is a spring element which presses the sensor element (6.1) of the temperature sensor (6) into the sensor element receptacle (9).

Description

Beschreibung Titel  Description title
Stator einer elektrischen Maschine  Stator of an electric machine
Stand der Technik State of the art
Die Erfindung geht aus von einem Stator einer elektrischen Maschine nach der Gattung des Hauptanspruchs. The invention relates to a stator of an electric machine according to the preamble of the main claim.
Es ist schon ein Stator einer elektrischen Maschine aus der US2013/0270973 AI bekannt, mit einer elektrischen Wicklung, die als Steckwicklung aus einer Vielzahl von It is already a stator of an electric machine from US2013 / 0270973 AI known, with an electrical winding, which is a plug-in winding of a variety of
Leiterelementen gebildet ist, von denen eine Vielzahl in Nuten des Stators angeordnet sind, wobei die in den Nuten verlaufenden Leiterelemente zur Bildung eines Wickelkopfes mit Leiterenden aus den Nuten vorstehen, und mit einem Temperatursensor, dessen Conductor elements is formed, a plurality of which are arranged in grooves of the stator, said extending in the grooves conductor elements for forming a winding head with conductor ends projecting from the grooves, and with a temperature sensor whose
Sensorelement in einer Sensorelement-Aufnahme eines am Wickelkopf verlaufenden Leiterelementes angeordnet und in der Sensorelement-Aufnahme durch ein Gießharz gehalten ist. Die Wärmeübertragung zwischen dem Temperatursensor und der Sensor element is arranged in a sensor element receptacle of a winding element extending on the winding head and held in the sensor element receptacle by a casting resin. The heat transfer between the temperature sensor and the
Sensorelement-Aufnahme ist nicht optimal, da zwischen dem Temperatursensor und der Sensorelement-Aufnahme ein mit Gießharz oder Luft gefüllter Spalt gebildet sein kann. Dadurch folgt die mit dem Temperatursensor gemessene Temperatur der tatsächlich am Wickelkopf vorliegenden Temperatur mit einer vergleichsweise langen zeitlichen Sensor element recording is not optimal, since between the temperature sensor and the sensor element recording a filled with casting resin or air gap may be formed. As a result, the temperature measured with the temperature sensor actually follows the temperature present at the winding head with a comparatively long time
Verzögerung, so dass eine vergleichsweise geringe Messdynamik vorliegt. Außerdem ist der Temperatursensor durch das Vergießen mit dem Gießharz nicht oder nur aufwendig austauschbar. Delay, so that a comparatively low dynamic range is present. In addition, the temperature sensor by casting with the casting resin is not or only consuming interchangeable.
Vorteile der Erfindung Advantages of the invention
Der erfindungsgemäße Stator einer elektrischen Maschine mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, dass die The stator of an electric machine according to the invention with the characterizing features of the main claim has the advantage that the
Wärmeübertragung zwischen dem Temperatursensor und der Sensorelement-Aufnahme verbessert und dadurch die Messdynamik bei der Temperaturmessung erhöht wird. Das Federelement verringert den Spalt zwischen dem Sensorelement und der Sensorelement- Aufnahme und erhöht die Wärmeübertragungsfläche zwischen dem Sensorelement und der Sensorelement-Aufnahme. Außerdem wird ein leichterer Austausch des Temperatursensors ermöglicht. Dies wird erfindungsgemäß erreicht, indem das Fixierelement ein Federelement ist, das das Sensorelement des Temperatursensors in die Sensorelement-Aufnahme drückt. Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Stators einer elektrischen Maschine möglich. Heat transfer between the temperature sensor and the sensor element recording improved and thereby the measurement dynamics in the temperature measurement is increased. The spring element reduces the gap between the sensor element and the sensor element receptacle and increases the heat transfer surface between the sensor element and the sensor element receptacle. In addition, an easier replacement of the temperature sensor is made possible. This is achieved according to the invention in that the fixing element is a spring element which presses the sensor element of the temperature sensor into the sensor element receptacle. The measures listed in the dependent claims advantageous refinements and improvements of the main claim stator of an electric machine are possible.
Gemäß einer vorteilhaften Ausführung kann das Federelement ein separates Element oder am betreffenden Leiterelement einstückig ausgebildet sein. According to an advantageous embodiment, the spring element may be formed integrally with a separate element or on the relevant conductor element.
Besonders vorteilhaft ist, wenn das Federelement metallisch ist. Durch das metallische Federelement wird die Wärmeübertragung verbessert, da Metall ein guter Wärmeleiter ist. It is particularly advantageous if the spring element is metallic. The metallic spring element improves the heat transfer, since metal is a good conductor of heat.
Weiterhin vorteilhaft ist, wenn das Federelement aus einem Federwerkstoff, insbesondere einem Federstahl, hergestellt ist, da das Sensorelement auf diese Weise mit hoher Federkraft an die Sensorelement-Aufnahme anpressbar ist. Dadurch wird eine zuverlässige Befestigung des Temperatursensors und eine gute Wärmeübertragung zwischen dem Sensorelement und der Sensorelement-Aufnahme erreicht. It is also advantageous if the spring element is made of a spring material, in particular a spring steel, since the sensor element can be pressed against the sensor element receptacle with high spring force in this manner. As a result, a reliable attachment of the temperature sensor and a good heat transfer between the sensor element and the sensor element receptacle is achieved.
Auch vorteilhaft ist, wenn das Federelement an dem das Sensorelement haltenden Leiterelement, insbesondere an der Sensorelement-Aufnahme dieses Leiterelementes, befestigt ist, da das Federelement auf diese Weise besonders einfach befestigbar ist. It is also advantageous if the spring element is fastened to the conductor element holding the sensor element, in particular to the sensor element receptacle of this conductor element, since the spring element can be attached particularly easily in this way.
Nach einem vorteilhaften Ausführungsbeispiel ist das Federelement klammerförmig oder clipsförmig ausgebildet, um eine formschlüssige und lösbare Befestigung des According to an advantageous embodiment, the spring element is clamp-shaped or clip-shaped to form a positive and releasable attachment of the
Sensorelementes zu erreichen. Dadurch lässt sich der Temperatursensor auf einfache Weise austauschen. To reach sensor element. This makes it easy to replace the temperature sensor.
Desweiteren vorteilhaft ist, wenn das Federelement und/oder das Sensorelement vorstehende Fixiermittel aufweist, die ein Verrutschen des Sensorelementes in der Sensorelement-Aufnahme verhindern. Auf diese Weise wird das Sensorelement in der Sensorelement-Aufnahme zuverlässig in Position gehalten. Furthermore, it is advantageous if the spring element and / or the sensor element has protruding fixing means which prevent the sensor element from slipping in the sensor element receptacle. In this way, the sensor element is reliably held in position in the sensor element receptacle.
Darüber hinaus vorteilhaft ist, wenn die Sensorelement-Aufnahme U-förmig oder V-förmig oder als gebogene Lasche ausgebildet ist. Bei der V-förmigen Ausführung können Moreover, it is advantageous if the sensor element receptacle is U-shaped or V-shaped or formed as a curved tab. In the V-shaped design can
Sensorelemente mit unterschiedlicher Abmessung, beispielsweise unterschiedlichem Durchmesser, in der Sensorelement-Aufnahme befestigt werden, da dort nicht parallele Schenkel bzw. Flanken vorhanden sind. Vorteilhaft ist, wenn an dem das Sensorelement haltenden Leiterelement eine weitere Aufnahme vorgesehen ist, die in Längsrichtung des Temperatursensorelementes gesehen zur Sensorelement-Aufnahme beabstandet und zur Halterung eines Sensorkabels des Temperatursensors vorgesehen ist. Auf diese Weise wird das flexible Kabel des Sensor elements with different dimensions, for example, different diameter, are mounted in the sensor element recording, since there are not parallel legs or flanks. It is advantageous if a further receptacle is provided on the conductor element holding the sensor element, which receptacle is spaced apart from the sensor element receptacle in the longitudinal direction of the temperature sensor element and is provided for mounting a sensor cable of the temperature sensor. In this way, the flexible cable of the
Temperatursensors geführt und gehalten, so dass eine Zugentlastung für das Temperature sensor guided and held, so that a strain relief for the
Sensorelement erreicht ist. Alternativ kann die weitere Aufnahme an der Sensorelement- Aufnahme ausgebildet sein. Außerdem vorteilhaft ist, wenn das das Sensorelement haltende Leiterelement als Sensor element is reached. Alternatively, the further receptacle may be formed on the sensor element receptacle. It is also advantageous if the sensor element holding the conductor element as
Stromschiene ausgebildet ist, an der eine Sternpunktverschaltung oder eine Busbar is formed at the a star point connection or a
Phasenverschaltung ausgebildet ist. An einem solchen Leiterelement kann die Phase connection is formed. On such a conductor element, the
Sensorelement-Aufnahme mit dem erfindungsgemäßen Federelement und/oder die weitere Aufnahme zur Halterung eines Kabels besonders gut ausgebildet und der Temperatursensor daran befestigt werden. Sensor element recording with the spring element according to the invention and / or the further receptacle for holding a cable particularly well formed and the temperature sensor attached thereto.
Zeichnung drawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description.
Fig.l zeigt einen Stator einer elektrischen Maschine, Fig.l shows a stator of an electric machine,
Fig.2 eine Teilansicht auf einen Wickelkopf des Stators nach Fig.l mit dem  A partial view of a winding head of the stator according to Fig.l with the
Leiterelement, an dem ein Temperatursensor in einer Sensorelement-Aufnahme befestigt ist,  Conductor element to which a temperature sensor is mounted in a sensor element receptacle,
Fig.3 eine Schnittansicht durch die Sensorelement-Aufnahme des den Temperatursensor haltenden Leiterelementes entlang der Linie III-III in Fig.2 und  3 shows a sectional view through the sensor element receptacle of the temperature sensor holding conductor element along the line III-III in Figure 2 and
Fig.4 Ansicht des die Sensorelement-Aufnahme aufweisenden Leiterelementes nachFig.4 view of the sensor element recording having conductor element after
Fig.2. Fig.2.
Beschreibung des Ausführungsbeispiels Description of the embodiment
Fig.l zeigt einen Stator einer elektrischen Maschine. Fig.l shows a stator of an electric machine.
Der Stator 1 einer elektrischen Maschine weist eine elektrische Wicklung 2 auf, die als Steckwicklung aus einer Vielzahl von Leiterelementen 3 gebildet ist, von denen eine Vielzahl in Nuten 4 des Stators 1 angeordnet sind. Die in den Nuten 4 des Stators 1 verlaufenden Leiterelemente 3 stehen mit Leiterenden 3.1 aus den Nuten 4 vor und bilden dadurch an den Stirnseiten des Stators 1 jeweils einen Wickelkopf 5, an dem die Leiterenden 3.1 der Leiterelemente 3 zur Bildung der elektrischen Wicklung 2 miteinander verschaltet bzw. verbunden sein können. The stator 1 of an electrical machine has an electrical winding 2, which is formed as a plug-in winding of a plurality of conductor elements 3, of which a plurality are arranged in grooves 4 of the stator 1. The extending in the grooves 4 of the stator 1 conductor elements 3 project with conductor ends 3.1 of the grooves 4 and thereby form at the end faces of the stator 1 each have a winding 5, to which the conductor ends 3.1 of the conductor elements 3 interconnected to form the electrical winding 2 or can be connected.
Fig.2 zeigt eine Teilansicht auf den Wickelkopf 5 des Stators 1 nach Fig.l mit einen 2 shows a partial view of the winding head 5 of the stator 1 according to Fig.l with a
Leiterelement, an dem ein Temperatursensor in einer Sensorelement-Aufnahme befestigt ist. Conductor element to which a temperature sensor is mounted in a sensor element receptacle.
Der Temperatursensor 6 weist ein Sensorelement 6.1 auf, mit dem die Temperatur erfasst wird und das in einer Sensorelement-Aufnahme 9 eines am Wickelkopf 5 verlaufenden Leiterelementes 3 angeordnet ist. Das Sensorelement 6.1 kann ein beliebiges Temperatur- Sensorelement, beispielsweise ein NTC- oder ein PTC-Element, sein. Beispielsweise umfasst das Sensorelement 6.1 eine Kapselung bzw. ein Sensorelementgehäuse zum Schutz des Sensorelementes 6.1. The temperature sensor 6 has a sensor element 6.1, with which the temperature is detected and which is arranged in a sensor element receptacle 9 of a winding element 5 extending on the conductor element 3. The sensor element 6.1 can be any temperature sensor element, for example an NTC or a PTC element. For example, the sensor element 6.1 comprises an encapsulation or a sensor element housing for protecting the sensor element 6.1.
Fig.3 zeigt eine Schnittansicht durch die Sensorelement-Aufnahme 9 des den 3 shows a sectional view through the sensor element receptacle 9 of the
Temperatursensor haltenden Leiterelementes 3 entlang der Linie III-III in Fig.2. Temperature sensor holding conductor element 3 along the line III-III in Fig.2.
Das Sensorelement 6.1 des Temperatursensors 6 ist in der Sensorelement-Aufnahme 9 durch ein Fixierelement 10 gehalten. The sensor element 6.1 of the temperature sensor 6 is held in the sensor element receptacle 9 by a fixing element 10.
Erfindungsgemäß ist vorgesehen, dass das Fixierelement 10 ein Federelement ist, das das Sensorelement 6.1 des Temperatursensors 6 mit einer Federkraft in die Sensorelement- Aufnahme 9 drückt. Auf diese Weise wird die Wärmeübertragung zwischen dem According to the invention, it is provided that the fixing element 10 is a spring element which presses the sensor element 6.1 of the temperature sensor 6 into the sensor element receptacle 9 with a spring force. In this way, the heat transfer between the
Temperatursensor 6 und der Sensorelement-Aufnahme 9 verbessert und dadurch die Messdynamik bei der Temperaturmessung erhöht. Das Federelement 10 verringert den Spalt und erhöht die Wärmeübertragungsfläche zwischen dem Sensorelement 6.1 und der Sensorelement-Aufnahme 9. Temperature sensor 6 and the sensor element receptacle 9 improves and thereby increases the measurement dynamics in the temperature measurement. The spring element 10 reduces the gap and increases the heat transfer area between the sensor element 6.1 and the sensor element receptacle 9.
Das Federelement 10 kann ein separates Element oder am betreffenden Leiterelement 3 einstückig ausgebildet sein. Das Federelement 10 ist beispielsweise metallisch ausgeführt, um eine gute Wärmeleitung im Federelement 10 zu erreichen. Nach dem The spring element 10 may be formed integrally with a separate element or on the respective conductor element 3. The spring element 10 is designed, for example, metallic, in order to achieve a good heat conduction in the spring element 10. After this
Ausführungsbeispiel ist das Federelement 10 aus einem Federwerkstoff, insbesondere einem Federstahl, hergestellt und als Federblech ausgebildet. Das Federelement 10 ist an dem das Sensorelement 6.1 haltenden Leiterelement 3, insbesondere an der Sensorelement-Aufnahme 9 dieses Leiterelementes 3 befestigt, beispielsweise Embodiment, the spring element 10 made of a spring material, in particular a spring steel, manufactured and designed as a spring plate. The spring element 10 is on the conductor element 3 holding the sensor element 6.1, in particular attached to the sensor element receptacle 9 of this conductor element 3, for example
formschlüssig, um einen einfachen Austausch des Temperatursensors 6 zu ermöglichen. Dazu kann das Federelement 10 klammerförmig oder clipsförmig ausgebildet sein und großflächig an der Sensorelement-Aufnahme 9 anliegen, um eine gute Wärmeübertragung von dem sensorelementtragenden Leiterelement 3 über das Federelement 10 zum positive fit to allow easy replacement of the temperature sensor 6. For this purpose, the spring element 10 may be formed in a clip-shaped or clip-shaped manner and bear against the sensor element receptacle 9 over a large area in order to ensure good heat transfer from the sensor element-carrying conductor element 3 via the spring element 10
Sensorelement 6.1 zu erzielen. To achieve sensor element 6.1.
An dem Federelement 10 und/oder an dem Sensorelement 6.1 können nicht dargestellte vorstehende Fixiermittel vorgesehen sein, die ein Verrutschen des Sensorelementes 6.1 in der Sensorelement-Aufnahme 9 verhindern. On the spring element 10 and / or on the sensor element 6.1 not shown above fixing means can be provided to prevent slippage of the sensor element 6.1 in the sensor element receptacle 9.
Die Sensorelement-Aufnahme 9 kann an dem sensorelementtragenden Leiterelement 3 U- förmig oder V-förmig oder als gebogene Lasche ausgebildet sein, so dass das The sensor element receptacle 9 may be formed on the sensor element-carrying conductor element 3 U-shaped or V-shaped or as a curved tab, so that the
Sensorelement 6.1 auf einfache Weise in die Sensorelement-Aufnahme 9 eingelegt und anschließend durch die Montage des Federelementes 10 fixiert werden kann. Sensor element 6.1 can be easily inserted into the sensor element receptacle 9 and then fixed by the assembly of the spring element 10.
Fig.4 zeigt eine Ansicht des die Sensorelement-Aufnahme 9 aufweisenden Leiterelementes nach Fig.2. 4 shows a view of the sensor element receptacle 9 having conductor element according to Fig.2.
An dem das Sensorelement 6.1 haltenden Leiterelement 3 kann eine weitere Aufnahme 12 vorgesehen sein, die in Längsrichtung des Temperatursensors 6 gesehen zur At which the sensor element 6.1 holding conductor element 3, a further receptacle 12 may be provided, seen in the longitudinal direction of the temperature sensor 6 for
Sensorelement-Aufnahme 9 beabstandet und zur Halterung eines zum Sensorelement 6.1 führenden Sensorkabels 15 vorgesehen ist. Alternativ kann die Sensorelement-Aufnahme 9 die weitere Aufnahme 12 umfassen. Das Sensorkabel 15 kann in der weiteren Aufnahme 12 durch ein Federelement entsprechend dem Federelement 10 der Sensorelement-Aufnahme 9 oder auf andere Weise befestigt sein. Sensor element receptacle 9 spaced and is provided for holding a leading sensor element 6.1 sensor cable 15. Alternatively, the sensor element receptacle 9 may comprise the further receptacle 12. The sensor cable 15 may be secured in the further receptacle 12 by a spring element corresponding to the spring element 10 of the sensor element receptacle 9 or in another way.
Das die Sensorelement-Aufnahme 9 aufweisende Leiterelement 3 kann ein beliebiges Leiterelement der elektrischen Steckwicklung sein. Nach dem Ausführungsbeispiel ist dieses Leiterelement 3 als Stromschiene ausgebildet, an der eine Sternpunktverschaltung oder eine Phasenverschaltung bzw. ein Phasenanschluss ausgeführt ist. Der Temperatursensor 6 kann an dem die Sensorelement-Aufnahme 9 aufweisenden Leiterelement 3 in axialer Richtung bezüglich einer Statorachse 1.1 des Stators 1 oder in einer Ebene parallel zur Stirnseite des Stators 1 ausgerichtet sein. The sensor element receptacle 9 having conductor element 3 may be any conductor element of the electrical plug-in winding. According to the exemplary embodiment, this conductor element 3 is designed as a busbar on which a star point connection or a phase connection or a phase connection is made. The temperature sensor 6 may be aligned at the sensor element receiving 9 having conductor element 3 in the axial direction with respect to a stator axis of the stator 1 1.1 or in a plane parallel to the end face of the stator 1.

Claims

Ansprüche claims
1. Stator (1) einer elektrischen Maschine mit einer elektrischen Wicklung (2), die als 1. Stator (1) of an electrical machine with an electrical winding (2), as
Steckwicklung aus einer Vielzahl von Leiterelementen (3) gebildet ist, von denen eine Vielzahl in Nuten (4) des Stators (1) angeordnet sind, wobei die in den Nuten (4) verlaufenden Leiterelemente (3) zur Bildung eines Wickelkopfes (5) mit Leiterenden (3.1) aus den Nuten (4) vorstehen, und mit einem Temperatursensor (6), dessen Sensorelement (6.1) in einer Sensorelement-Aufnahme (9) eines am Wickelkopf (5) verlaufenden Leiterelementes (3) angeordnet und in der Sensorelement-Aufnahme (9) durch ein Fixierelement (10) gehalten ist, dadurch gekennzeichnet, dass das  Plug winding of a plurality of conductor elements (3) is formed, of which a plurality in grooves (4) of the stator (1) are arranged, wherein in the grooves (4) extending conductor elements (3) for forming a winding head (5) Leader ends (3.1) protrude from the grooves (4), and with a temperature sensor (6) whose sensor element (6.1) arranged in a sensor element receptacle (9) of the winding head (5) extending conductor element (3) and in the Sensorelement- Housing (9) is held by a fixing element (10), characterized in that the
Fixierelement (10) ein Federelement ist, das das Sensorelement (6.1) des  Fixing element (10) is a spring element, the sensor element (6.1) of the
Temperatursensors (6) in die Sensorelement-Aufnahme (9) drückt.  Temperature sensor (6) in the sensor element receptacle (9) presses.
2. Stator nach Anspruch 1, dadurch gekennzeichnet, dass das Federelement (10) ein separates Element oder am betreffenden Leiterelement einstückig ausgebildet ist. 2. Stator according to claim 1, characterized in that the spring element (10) is a separate element or integrally formed on the relevant conductor element.
3. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Federelement (10) metallisch ist. 3. Stator according to one of the preceding claims, characterized in that the spring element (10) is metallic.
4. Stator nach Anspruch 3, dadurch gekennzeichnet, dass das Federelement (10) aus einem Federwerkstoff, insbesondere einem Federstahl, hergestellt ist. 4. Stator according to claim 3, characterized in that the spring element (10) is made of a spring material, in particular a spring steel.
5. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Federelement (10) an dem das Sensorelement (6.1) haltenden Leiterelement (3), insbesondere an der Sensorelement-Aufnahme (9) dieses Leiterelementes (3), befestigt ist. 5. Stator according to one of the preceding claims, characterized in that the spring element (10) on which the sensor element (6.1) holding conductor element (3), in particular on the sensor element receptacle (9) of this conductor element (3) is fixed.
6. Stator nach Anspruch 5, dadurch gekennzeichnet, dass das Federelement (10) 6. Stator according to claim 5, characterized in that the spring element (10)
klammerförmig oder clipsförmig ausgebildet ist.  is formed clamp-shaped or clip-shaped.
7. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Federelement (10) und/oder das Sensorelement (6.1) vorstehende Fixiermittel (11) aufweist, die ein Verrutschen des Sensorelementes (6.1) in der Sensorelement- Aufnahme (9) verhindern. 7. Stator according to one of the preceding claims, characterized in that the spring element (10) and / or the sensor element (6.1) protruding fixing means (11) which prevent slippage of the sensor element (6.1) in the sensor element recording (9) ,
8. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorelement-Aufnahme (9) U-förmig oder V-förmig oder als gebogene Lasche ausgebildet ist. 8. Stator according to one of the preceding claims, characterized in that the sensor element receptacle (9) is U-shaped or V-shaped or formed as a curved tab.
9. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an dem das Sensorelement (6.1) haltenden Leiterelement (3) eine weitere Aufnahme (12) vorgesehen ist, die in Längsrichtung des Temperatursensors (6) gesehen zur 9. Stator according to one of the preceding claims, characterized in that on which the sensor element (6.1) holding conductor element (3), a further receptacle (12) is provided, seen in the longitudinal direction of the temperature sensor (6) for
Sensorelement-Aufnahme (9) beabstandet und zur Halterung eines Sensorkabels (15) des Temperatursensors (6) vorgesehen ist.  Sensor element receptacle (9) spaced and for holding a sensor cable (15) of the temperature sensor (6) is provided.
10. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das das Sensorelement (6.1) haltende Leiterelement (3) als Stromschiene ausgebildet ist, an der eine Sternpunktverschaltung oder eine Phasenverschaltung ausgebildet ist. 10. Stator according to one of the preceding claims, characterized in that the sensor element (6.1) holding conductor element (3) is designed as a busbar on which a neutral connection or a phase connection is formed.
11. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Sensorelement (6.1) eine Kapselung bzw. ein Sensorelementgehäuse zum Schutz des Sensorelementes (6.1) umfasst. 11. Stator according to one of the preceding claims, characterized in that the sensor element (6.1) comprises an encapsulation or a sensor element housing for protecting the sensor element (6.1).
PCT/EP2018/074430 2017-10-16 2018-09-11 Stator of an electric machine WO2019076540A1 (en)

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US20210211022A1 (en) * 2018-05-28 2021-07-08 Zf Friedrichshafen Ag Stator of an electrical machine, comprising a temperature sensor, and electrical machine comprising such a stator
DE102020126632A1 (en) 2020-10-12 2022-04-14 Schaeffler Technologies AG & Co. KG Connection of a temperature sensor to a circuit ring of an electrical machine

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DE102019121188A1 (en) * 2019-04-26 2020-10-29 Schaeffler Technologies AG & Co. KG Electric machine
EP4254745A1 (en) * 2022-03-31 2023-10-04 Valeo eAutomotive Germany GmbH Stator device for an electric machine

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DE102020126632A1 (en) 2020-10-12 2022-04-14 Schaeffler Technologies AG & Co. KG Connection of a temperature sensor to a circuit ring of an electrical machine
DE102020126632B4 (en) 2020-10-12 2022-11-17 Schaeffler Technologies AG & Co. KG Connection of a temperature sensor to a circuit ring of an electrical machine

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