WO2021143966A1 - Stator for an electric motor - Google Patents

Stator for an electric motor Download PDF

Info

Publication number
WO2021143966A1
WO2021143966A1 PCT/DE2020/101044 DE2020101044W WO2021143966A1 WO 2021143966 A1 WO2021143966 A1 WO 2021143966A1 DE 2020101044 W DE2020101044 W DE 2020101044W WO 2021143966 A1 WO2021143966 A1 WO 2021143966A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
insulator
winding
base
spacer element
Prior art date
Application number
PCT/DE2020/101044
Other languages
German (de)
French (fr)
Inventor
Xingyu ZHAO
Original Assignee
Schaeffler Technologies AG & 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 & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2021143966A1 publication Critical patent/WO2021143966A1/en

Links

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
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors

Definitions

  • the invention relates to a stator for an electric motor.
  • the stator for the electric motor has a large number of stator teeth.
  • Each stator tooth is defined by two longitudinal sides and two transverse sides and carries a concentrated winding which is wound on an electrical insulator and has two opposite winding heads.
  • the concentrated winding is wound on the electrical insulator that surrounds the stator tooth.
  • the German patent application DE 10 2017 218 933 A1 discloses a cooling device for cooling a stator for an electrical machine of a motor vehicle.
  • a coolant guide unit and at least one winding groove cooling channel are provided, which are designed as a structural unit and for guiding coolant along the end face.
  • the winding slot cooling channel extends axially in the stator.
  • the German patent application DE 10 2017 130 361 A1 discloses the design of a stator tooth.
  • the stator tooth has long sides and front sides that form electrical insulation and thus isolate the winding from the stator tooth.
  • an insulator is used in an electrical machine with a concentrated winding.
  • This insulator serves on the one hand as insulation between the stator iron and the windings, and on the other hand as a carrier for the windings.
  • the insulator is designed with a continuously flat surface (base) at the point at which the angled head is located. Consequently, with the prior art insulator, there is no gap for a coolant (oiling) between the copper windings and the insulator. The cooling of the winding heads of the electrical machine is therefore not optimal.
  • the object of the invention is therefore to provide a stator with a concentrated winding for an electric motor, the stator having optimized cooling. This object is achieved by a stator with concentrated winding for an electric motor, which comprises the features of claim 1.
  • a stator for an electric motor comprises a plurality of stator teeth.
  • Each stator tooth carries a concentrated winding which is wound on an electrical insulator and thus has two opposite winding heads.
  • the insulator is formed on each of the winding overhangs in such a way that the concentrated winding is spaced apart from a base of the electrical insulator in the region of the winding overhangs.
  • the advantage of the design of the stator teeth according to the invention is that, due to the spacing of the concentrated winding from the base of the electrical insulator, at least one free space (gap) is formed on the angled head, in which a coolant (oil) can be guided, thus cooling the winding heads improved.
  • a coolant oil
  • the inner surface of the winding on the angular head can also be oiled and thus cooled.
  • the insulator in the area of the end windings, can have a stand element from which protrudes from the base.
  • the concentrated winding is wound over the spacer element so that at least one free space is formed on each winding head between the base and the winding.
  • the spacer element can be an integral part of the insulator.
  • the insulator is preferably designed as an injection-molded component that has formed the spacer element.
  • the insulator can be designed in the area of the winding heads in such a way that the base of the insulator and the spacer element together have a T-shaped shape. In the area of each of the winding heads, two free spaces for guiding a coolant are therefore formed.
  • the advantage of the T-shaped design of the base of the insulator and the spacer element is that with this T-shaped design of the insulator on the end winding, the windings on the end winding are supported in an arched manner and thereby the at least one free space (gap) between the base (surface) of the insulator and the windings light becomes.
  • the T-shaped shape of the base of the insulator and of the spacer element has the advantage that there is a symmetrical construction.
  • FIG. 1 shows a perspective view of a stator according to the prior art.
  • FIG. 2 shows a perspective detailed view of a tooth with a winding according to the prior art.
  • FIG. 3 shows a sectional view of the stator tooth according to the prior art, the end or the winding head of the tooth being shown.
  • FIG. 4 shows a sectional view of the stator tooth, the configuration according to the invention of the end of the stator tooth being shown.
  • FIG. 1 shows a perspective view of a stator 1 according to the prior art.
  • the stator 1 is used in an electrical machine (not illustrated represents) with a concentrated winding.
  • the stator 1 comprises a plurality of stator teeth 3 which are oriented on the stator body 2 in the axial direction A of the electrical machine.
  • FIG. 2 shows a perspective view of a stator tooth 3 as it is used in the stator 1 (see FIG. 1) of the prior art.
  • the iron 8 of each stator tooth 3 is cuboid and has two longitudinal sides 8L, which are aligned in the axial direction A, and two transverse sides 8Q.
  • the iron 8 of the stator tooth 3 is surrounded by an insulator 7.
  • a winding head 9 is formed in each case in the axial direction A (see FIG. 3).
  • the insulator 7 serves on the one hand as insulation between the iron 8 of the stator tooth 3 or of the stator 1 and the windings 5 which are wound on the insulator 7.
  • the insulator 7 is consequently also a carrier for windings 5.
  • FIG. 3 shows a cross section through a stator tooth 3 of the prior art, where one end 3E of the stator tooth 3 with the end winding 9 is shown here.
  • the insulator 7 has a flat, planar base 6 on the end winding 9. Thus, the winding 5 is in full contact with the winding head 9.
  • FIG. 4 shows a cross section through a stator tooth 3 of the prior art, where one end 3E of the stator tooth 3 with the end winding 9 is shown here.
  • the insulator 7 is formed on each of the winding heads 9 in such a way that the concentrated winding 5 is spaced apart from the base 6 of the electrical insulator 7. Between the base 6 of the electrical insulator 7 and the winding 5 there is consequently at least one free space 12 formed.
  • the base 6 of the electrical insulator 7 is seen with a spacer element 10 ver.
  • the spacer element 10 projects essentially perpendicularly from the base 6.
  • the winding 5 is guided over the spacer element 10 of the insulator 7 when the winding 5 is removed.
  • the free spaces 12 provided in this embodiment are formed.
  • the insulator 7 is designed in a T-shape, so that the winding is spaced apart from the insulator at the point at which the end winding 9 is located.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

The invention relates to a stator (1) for an electric motor. The stator (1) has a plurality of stator teeth (3), wherein each stator tooth (3) has a concentrated winding (5) which is wound onto an electric insulator (7). Each stator tooth (3) has two winding heads (9) lying opposite each other, and the insulator (7) is formed such that the concentrated winding (5) is arranged at a distance from the base (6) of the electric insulator (7) at each winding head (9).

Description

Stator für einen Elektromotor Stator for an electric motor
Die Erfindung betrifft einen Stator für einen Elektromotor. Der Stator für den Elektromo- tor weist eine Vielzahl von Statorzähnen auf. Jeder Statorzahn ist durch zwei Längssei ten und zwei Querseiten definiert und trägt eine konzentrierte Wicklung, die auf einen elektrischen Isolator gewickelt ist und zwei gegenüberliegende Wickelköpfe aufweist. Die konzentrierte Wicklung ist auf den elektrischen Isolator gewickelt, der den Stator zahn umgibt. Die deutsche Offenlegungsschrift DE 10 2017 218 933 A1 offenbart eine Kühlvorrich tung zum Kühlen eines Stators für eine elektrische Maschine eines Kraftfahrzeugs. Es ist eine Kühlmittelleiteinheit und zumindest ein Wicklungsnutkühlkanal vorgesehen, die als eine bauliche Einheit und zum Leiten von Kühlmittel entlang der Stirnseite ausgebil det sind. Der Wicklungsnutkühlkanal erstreckt sich axial im Stator. In der deutschen Offenlegungsschrift DE 10 2017 130 361 A1 ist die Ausbildung eines Statorzahns offenbart. Der Statorzahn weist Längsseiten und Stirnseiten auf, die eine elektrische Isolierung bilden und somit die Wicklung gegenüber dem Statorzahn isolie ren. The invention relates to a stator for an electric motor. The stator for the electric motor has a large number of stator teeth. Each stator tooth is defined by two longitudinal sides and two transverse sides and carries a concentrated winding which is wound on an electrical insulator and has two opposite winding heads. The concentrated winding is wound on the electrical insulator that surrounds the stator tooth. The German patent application DE 10 2017 218 933 A1 discloses a cooling device for cooling a stator for an electrical machine of a motor vehicle. A coolant guide unit and at least one winding groove cooling channel are provided, which are designed as a structural unit and for guiding coolant along the end face. The winding slot cooling channel extends axially in the stator. The German patent application DE 10 2017 130 361 A1 discloses the design of a stator tooth. The stator tooth has long sides and front sides that form electrical insulation and thus isolate the winding from the stator tooth.
Gemäß dem Stand der Technik ist bei einer elektrischen Maschine mit konzentrierter Wicklung ein Isolator eingesetzt. Dieser Isolator dient einerseits als Isolation zwischen Stator-Eisen und Wicklungen, anderseits als Träger für die Wicklungen. Gemäß dem Stand der Technik ist der Isolator mit einer durchgehend flachen Fläche (Basis) an der Stelle ausgelegt, an der sich der Wckelkopf befindet. Folglich gibt es mit dem Isolator des Stand der Technik zwischen den Kupfer-Wicklungen und dem Isolator keinen Spalt für ein Kühlmittel (Beölung). Die Kühlung der Wickelköpfe der elektrischen Maschine ist somit nicht optimal. According to the prior art, an insulator is used in an electrical machine with a concentrated winding. This insulator serves on the one hand as insulation between the stator iron and the windings, and on the other hand as a carrier for the windings. According to the prior art, the insulator is designed with a continuously flat surface (base) at the point at which the angled head is located. Consequently, with the prior art insulator, there is no gap for a coolant (oiling) between the copper windings and the insulator. The cooling of the winding heads of the electrical machine is therefore not optimal.
Aufgabe der Erfindung ist es daher, einen Stator mit konzentrierter Wicklung für einen Elektromotor bereitzustellen, wobei der Stator eine optimierte Kühlung aufweist. Diese Aufgabe wird gelöst durch einen Stator mit konzentrierter Wicklung für einen Elektromotor, der die Merkmale des Anspruchs 1 umfasst. The object of the invention is therefore to provide a stator with a concentrated winding for an electric motor, the stator having optimized cooling. This object is achieved by a stator with concentrated winding for an electric motor, which comprises the features of claim 1.
Gemäß einer Ausführungsform der Erfindung umfasst ein Stator für einen Elektromotor eine Vielzahl von Statorzähnen. Jeder Statorzahn trägt eine konzentrierte Wicklung, die auf einen elektrischen Isolator gewickelt ist und somit zwei gegenüberliegende Wickel köpfe aufweist. Der Isolator ist an jedem der Wickelköpfe derart ausgebildet, dass die konzentrierte Wicklung von einer Basis des elektrischen Isolators im Bereich der Wi ckelköpfe beabstandet ist. According to one embodiment of the invention, a stator for an electric motor comprises a plurality of stator teeth. Each stator tooth carries a concentrated winding which is wound on an electrical insulator and thus has two opposite winding heads. The insulator is formed on each of the winding overhangs in such a way that the concentrated winding is spaced apart from a base of the electrical insulator in the region of the winding overhangs.
Der Vorteil der erfindungsgemäßen Ausgestaltung der Statorzähne ist, dass aufgrund der Beabstandung der konzentrierten Wicklung von der Basis des elektrischen Isolators mindestens ein Freiraum (Spalt) am Wckelkopf ausgebildet wird, in dem ein Kühlmittel (Öl) geführt werden kann, was somit die Kühlung der Wickelköpfe verbessert. Auch die innere Fläche der Wicklung am Wckelkopf kann beölt und somit gekühlt werden. The advantage of the design of the stator teeth according to the invention is that, due to the spacing of the concentrated winding from the base of the electrical insulator, at least one free space (gap) is formed on the angled head, in which a coolant (oil) can be guided, thus cooling the winding heads improved. The inner surface of the winding on the angular head can also be oiled and thus cooled.
Gemäß einer Ausführungsform kann im Bereich der Wickelköpfe der Isolator ein Ab Standselement aufweisen, das von der Basis absteht. Über das Abstandselement ist die konzentrierte Wicklung gewickelt, so dass mindestens ein Freiraum an jedem Wickel kopf zwischen der Basis und der Wcklung ausgebildet wird. According to one embodiment, in the area of the end windings, the insulator can have a stand element from which protrudes from the base. The concentrated winding is wound over the spacer element so that at least one free space is formed on each winding head between the base and the winding.
Gemäß einer Ausführungsform kann das Abstandselement ein integraler Bestandteil des Isolators sein. Bevorzugt ist der Isolator als ein spritzgegossenes Bauteil ausgestal- tet, das das Abstandselement ausgebildet hat. According to one embodiment, the spacer element can be an integral part of the insulator. The insulator is preferably designed as an injection-molded component that has formed the spacer element.
Gemäß einerweiteren vorteilhaften Ausgestaltung kann der Isolator im Bereich der Wi ckelköpfe derart ausgestaltet ist, dass die Basis des Isolators und das Abstandselement zusammen eine T-förmige Gestalt besitzen. Im Bereich eines jeden der Wickelköpfe sind folglich zwei Freiräume zur Führung eines Kühlmittels ausgebildet. Der Vorteil der T-förmigen Gestalt der Basis des Isolators und des Abstandselements besteht darin, dass mit dieser T-förmigen Auslegung des Isolators am Wickelkopf die Wicklungen am Wickelkopf gewölbt gestützt werden und dadurch der mindestens eine Freiraum (Spalt) zwischen der Basis (Fläche) des Isolators und den Wicklungen ermög- licht wird. Ferner hat die T-förmige Gestalt der Basis des Isolators und des Abstandse lements den Vorteil, dass ein symmetrischer Ausbau vorliegt. According to a further advantageous embodiment, the insulator can be designed in the area of the winding heads in such a way that the base of the insulator and the spacer element together have a T-shaped shape. In the area of each of the winding heads, two free spaces for guiding a coolant are therefore formed. The advantage of the T-shaped design of the base of the insulator and the spacer element is that with this T-shaped design of the insulator on the end winding, the windings on the end winding are supported in an arched manner and thereby the at least one free space (gap) between the base (surface) of the insulator and the windings light becomes. Furthermore, the T-shaped shape of the base of the insulator and of the spacer element has the advantage that there is a symmetrical construction.
Mit dem Abstandselement bzw. der T-förmigen Gestalt der Basis des Isolators und des Abstandselements am Wickelkopf entsteht beim Wicklungsprozess kein Zusatzaufwand gegenüber konventionellen Elektromotoren ohne das Abstandselement des Isolators bzw. der T-förmigen Gestalt der Basis des Isolators. With the spacer element or the T-shaped shape of the base of the insulator and the spacer element on the end winding, there is no additional effort in the winding process compared to conventional electric motors without the spacer element of the insulator or the T-shaped shape of the base of the insulator.
Anhand der beigefügten Zeichnungen werden nun die Erfindung und ihre Vorteile durch Ausführungsbeispiele näher erläutert, ohne dadurch die Erfindung auf das gezeigte Aus führungsbeispiel zu beschränken. Die Größenverhältnisse in den Figuren entsprechen nicht immer den realen Größenverhältnissen, da einige Formen vereinfacht und andere Formen zur besseren Veranschaulichung vergrößert im Verhältnis zu anderen Elemen ten dargestellt sind. With reference to the accompanying drawings, the invention and its advantages will now be explained in more detail by means of embodiments, without thereby limiting the invention to the exemplary embodiment shown off. The proportions in the figures do not always correspond to the real proportions, as some shapes are simplified and other shapes are shown enlarged in relation to other elements for better illustration.
Figur 1 zeigt eine perspektivische Ansicht eines Stators gemäß dem Stand der Technik. Figur 2 zeigt eine perspektivische Detailansicht eines Zahns mit Wicklung gemäß dem Stand der Technik. FIG. 1 shows a perspective view of a stator according to the prior art. FIG. 2 shows a perspective detailed view of a tooth with a winding according to the prior art.
Figur 3 zeigt eine Schnittansicht des Statorszahns gemäß dem Stand der Technik, wobei das Ende bzw. der Wickelkopf des Zahns dargestellt ist. FIG. 3 shows a sectional view of the stator tooth according to the prior art, the end or the winding head of the tooth being shown.
Figur 4 zeigt eine Schnittansicht des Statorzahns, wobei die erfindungsgemäße Ausgestaltung des Endes des Statorzahns dargestellt ist. FIG. 4 shows a sectional view of the stator tooth, the configuration according to the invention of the end of the stator tooth being shown.
Für gleiche oder gleich wirkende Elemente der Erfindung werden identische Bezugszei chen verwendet. Ferner werden der Übersicht halber nur Bezugszeichen in den einzel nen Figuren dargestellt, die für die Beschreibung der jeweiligen Figur erforderlich sind. Die Figuren stellen lediglich Ausführungsbeispiele der Erfindung dar, ohne jedoch die Erfindung auf die dargestellten Ausführungsbeispiele zu beschränken. Identical reference characters are used for elements of the invention that are identical or function in the same way. Furthermore, for the sake of clarity, only reference numerals are shown in the individual figures, which are necessary for the description of the respective figure. The figures merely represent exemplary embodiments of the invention without, however, restricting the invention to the illustrated exemplary embodiments.
Figur 1 zeigt eine perspektivische Ansicht eines Stators 1 gemäß dem Stand der Tech nik. Der Stator 1 dient zur Verwendung bei einer elektrischen Maschine (nicht darge stellt) mit konzentrierter Wicklung. Der Stator 1 umfasst eine Vielzahl von Statorzähnen 3, die am Statorkörper 2 in axialer Richtung A der elektrischen Maschine orientiert sind. Figur 2 zeigt eine perspektivische Ansicht eines Statorzahns 3, wie er beim Stator 1 (siehe Fig. 1) des Standes der Technik Anwendung findet. Das Eisen 8 eines jeden Statorzahns 3 ist quaderförmig ausgebildet und weist zwei Längsseiten 8L, die in axialer Richtung A ausgerichtet sind, und zwei Querseiten 8Q auf. Das Eisen 8 des Statorzahns 3 ist von einem Isolator 7 umgeben. An den beiden Enden 3E des Statorzahns 3 ist in axialer Richtung A jeweils ein Wickelkopf 9 ausgebildet (siehe Figur 3). Der Isolator 7 dient einerseits als Isolation zwischen den Eisen 8 des Statorzahns 3 bzw. des Stators 1 und den Wicklungen 5, die auf den Isolator 7 gewickelt sind. Der Isolator 7 ist folglich auch ein Träger für Wicklungen 5. Figure 1 shows a perspective view of a stator 1 according to the prior art. The stator 1 is used in an electrical machine (not illustrated represents) with a concentrated winding. The stator 1 comprises a plurality of stator teeth 3 which are oriented on the stator body 2 in the axial direction A of the electrical machine. FIG. 2 shows a perspective view of a stator tooth 3 as it is used in the stator 1 (see FIG. 1) of the prior art. The iron 8 of each stator tooth 3 is cuboid and has two longitudinal sides 8L, which are aligned in the axial direction A, and two transverse sides 8Q. The iron 8 of the stator tooth 3 is surrounded by an insulator 7. At the two ends 3E of the stator tooth 3, a winding head 9 is formed in each case in the axial direction A (see FIG. 3). The insulator 7 serves on the one hand as insulation between the iron 8 of the stator tooth 3 or of the stator 1 and the windings 5 which are wound on the insulator 7. The insulator 7 is consequently also a carrier for windings 5.
Figur 3 zeigt einen Querschnitt durch einen Statorzahn 3 des Standes der Technik, wo bei hier ein Ende 3E des Statorzahns 3 mit dem Wickelkopf 9 dargestellt ist. Der Isolator 7 hat am Wickelkopf 9 eine flache, ebene Basis 6 ausgebildet. Somit liegt die Wicklung 5 am Wickelkopf 9 vollflächig an. FIG. 3 shows a cross section through a stator tooth 3 of the prior art, where one end 3E of the stator tooth 3 with the end winding 9 is shown here. The insulator 7 has a flat, planar base 6 on the end winding 9. Thus, the winding 5 is in full contact with the winding head 9.
Figur 4 zeigt einen Querschnitt durch einen Statorzahn 3 des Standes der Technik, wo bei hier ein Ende 3E des Statorzahns 3 mit dem Wickelkopf 9 dargestellt ist. Erfin dungsgemäß ist der Isolator 7 an jedem der Wickelköpfe 9 derart ausgebildet, dass die konzentrierte Wicklung 5 von der Basis 6 des elektrischen Isolators 7 beabstandet ist. Zwischen der Basis 6 des elektrischen Isolators 7 und der Wicklung 5 ist folglich min destens ein Freiraum 12 ausgebildet. Gemäß einer möglichen Ausführungsform der Er findung ist die Basis 6 des elektrischen Isolators 7 mit einem Abstandselement 10 ver sehen. Das Abstandselement 10 steht im Wesentlichen senkrecht von der Basis 6 ab. Die Wicklung 5 wird beim Ausbau der Wicklung 5 über das Abstandselement 10 des Isolators 7 geführt. Dadurch werden die bei dieser Ausführungsform vorgesehenen Frei räume 12 ausgebildet. FIG. 4 shows a cross section through a stator tooth 3 of the prior art, where one end 3E of the stator tooth 3 with the end winding 9 is shown here. According to the invention, the insulator 7 is formed on each of the winding heads 9 in such a way that the concentrated winding 5 is spaced apart from the base 6 of the electrical insulator 7. Between the base 6 of the electrical insulator 7 and the winding 5 there is consequently at least one free space 12 formed. According to a possible embodiment of the invention, the base 6 of the electrical insulator 7 is seen with a spacer element 10 ver. The spacer element 10 projects essentially perpendicularly from the base 6. The winding 5 is guided over the spacer element 10 of the insulator 7 when the winding 5 is removed. As a result, the free spaces 12 provided in this embodiment are formed.
Bei der Ausbildung der Wickelköpfe 9 des Elektromotors kann somit mit den Freiräumen 12 an den Wickelköpfen 9 eine Ölkühlung für die Wickelköpfe 9 realisiert werden. Die Oberfläche der Wickelköpfe 9 wird somit beölt und gekühlt. Gemäß einer Ausführungs form der Erfindung wird der Isolator 7 T-förmig ausgelegt, so dass an der Stelle, an der sich Wickelkopf 9 befindet, die Wicklung vom Isolator beabstandet ist. BezugszeichenlisteWhen forming the winding heads 9 of the electric motor, oil cooling for the winding heads 9 can thus be implemented with the free spaces 12 on the winding heads 9. The surface of the winding heads 9 is thus oiled and cooled. According to one embodiment of the invention, the insulator 7 is designed in a T-shape, so that the winding is spaced apart from the insulator at the point at which the end winding 9 is located. List of reference symbols
1 Stator 1 stator
2 Statorkörper 2 stator bodies
3 Statorzahn 3 stator tooth
3E Ende 3E end
5 Wicklung 5 winding
6 Basis 6 base
7 Isolator 7 isolator
8 Eisen 8 irons
8L Längsseite 8L long side
8Q Querseite 8Q transverse side
9 Wickelkopf 9 winding head
10 Abstandselement 12 Freiraum A axiale Richtung 10 spacer 12 clearance A axial direction

Claims

Patentansprüche Claims
1. Stator (1 ) für einen Elektromotor, umfassend eine Vielzahl von quaderförmigen Statorzähnen (3), die jeweils zwei Längsseiten (8L) und zwei Querseiten (8Q) defi- nieren, wobei jeder Statorzahn (3) von einem elektrischen Isolator (7) umgeben ist, auf den eine konzentrierte Wicklung (5) gewickelt ist und jeder Statorzahn (3) somit zwei gegenüberliegende Wickelköpfe (9) aufweist; dadurch gekennzeichnet, dass der Isolator (7) im Bereich der zwei Querseiten (8Q) an jedem der Wickelköpfe (9) derart ausgebildet ist, dass die konzentrierte Wicklung (5) von einer Basis (6) des elektrischen Isolators (7) beabstandet ist. 1. Stator (1) for an electric motor, comprising a plurality of cuboid stator teeth (3) each defining two longitudinal sides (8L) and two transverse sides (8Q), each stator tooth (3) being supported by an electrical insulator (7) is surrounded, on which a concentrated winding (5) is wound and each stator tooth (3) thus has two opposite winding heads (9); characterized in that the insulator (7) is formed in the area of the two transverse sides (8Q) on each of the winding heads (9) in such a way that the concentrated winding (5) is spaced from a base (6) of the electrical insulator (7).
2. Stator (1 ) nach Anspruch 1 , wobei der Isolator (7) im Bereich der Wickelköpfe (9) ein Abstandselement (10) aufweist, das von der Basis (6) absteht, über das die konzentrierte Wicklung (5) gewickelt ist, so dass mindestens ein Freiraum (12) an jedem Wickelkopf (9) zwischen der Basis (6) und der Wicklung (5) ausgebildet ist. 2. Stator (1) according to claim 1, wherein the insulator (7) in the region of the winding heads (9) has a spacer element (10) which protrudes from the base (6) over which the concentrated winding (5) is wound, so that at least one free space (12) is formed on each winding head (9) between the base (6) and the winding (5).
3. Stator (1) nach Anspruch 2, wobei der mindestens eine Freiraum (12) zur Führung eines Kühlmittels ausgebildet ist. 3. stator (1) according to claim 2, wherein the at least one free space (12) is designed to guide a coolant.
4. Stator (1 ) nach einem der vorangehenden Ansprüche 2 bis 3, wobei das Abstand selement (10) ein integraler Bestandteil des Isolators (7) ist. 4. stator (1) according to any one of the preceding claims 2 to 3, wherein the spacing selement (10) is an integral part of the insulator (7).
5. Stator (1) nach Anspruch 4, wobei der Isolator (7) ein spritzgegossenes Bauteil ist, das das Abstandselement (10) ausgebildet hat. 5. stator (1) according to claim 4, wherein the insulator (7) is an injection molded component which has formed the spacer element (10).
6. Stator (1) nach einem der vorangehenden Ansprüche, wobei der Isolator (7) im Bereich der Wickelköpfe (9) derart ausgestaltet ist, dass die Basis (6) des Isolators (7) und das Abstandselement (10) zusammen eine T-förmige Gestalt besitzen. 6. stator (1) according to any one of the preceding claims, wherein the insulator (7) in the region of the end windings (9) is designed such that the base (6) of the insulator (7) and the spacer element (10) together have a T- have a shaped shape.
7. Stator (1) nach Anspruch 6, wobei im Bereich eines jeden der Wickelköpfe (9) zwei7. stator (1) according to claim 6, wherein in the region of each of the end windings (9) two
Freiräume (12) zur Führung eines Kühlmittels ausgebildet sind. Free spaces (12) are formed for guiding a coolant.
PCT/DE2020/101044 2020-01-14 2020-12-10 Stator for an electric motor WO2021143966A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020100618.7 2020-01-14
DE102020100618.7A DE102020100618A1 (en) 2020-01-14 2020-01-14 Stator for an electric motor

Publications (1)

Publication Number Publication Date
WO2021143966A1 true WO2021143966A1 (en) 2021-07-22

Family

ID=74184318

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2020/101044 WO2021143966A1 (en) 2020-01-14 2020-12-10 Stator for an electric motor

Country Status (2)

Country Link
DE (1) DE102020100618A1 (en)
WO (1) WO2021143966A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100218918A1 (en) * 2007-06-13 2010-09-02 Toyota Jidosha Kabushiki Kaisha Cooling structure for rotating electric machine
JP2010206870A (en) * 2009-02-27 2010-09-16 Toyota Motor Corp Rotary electric machine
EP2439831A1 (en) * 2009-06-05 2012-04-11 Toyota Jidosha Kabushiki Kaisha Split stator and manufacturing method therefor
US20160118854A1 (en) * 2014-10-27 2016-04-28 Fanuc Corporation Stator with coil fixing member and electric motor with the stator
EP3057206A1 (en) * 2015-02-13 2016-08-17 Hamilton Sundstrand Corporation Lubricant channel on a stator winding support
EP3160017A1 (en) * 2015-10-20 2017-04-26 Toyota Jidosha Kabushiki Kaisha Stator
DE102017218933A1 (en) 2017-10-24 2019-04-25 Bayerische Motoren Werke Aktiengesellschaft Cooling device for a stator of an electrical machine of a motor vehicle, stator and motor vehicle
DE102017130361A1 (en) 2017-12-18 2019-07-04 Lsp Innovative Automotive Systems Gmbh Stator tooth and stator with good electrical insulation and at the same time very high thermal conductivity to increase the performance of electric motors

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100218918A1 (en) * 2007-06-13 2010-09-02 Toyota Jidosha Kabushiki Kaisha Cooling structure for rotating electric machine
JP2010206870A (en) * 2009-02-27 2010-09-16 Toyota Motor Corp Rotary electric machine
EP2439831A1 (en) * 2009-06-05 2012-04-11 Toyota Jidosha Kabushiki Kaisha Split stator and manufacturing method therefor
US20160118854A1 (en) * 2014-10-27 2016-04-28 Fanuc Corporation Stator with coil fixing member and electric motor with the stator
EP3057206A1 (en) * 2015-02-13 2016-08-17 Hamilton Sundstrand Corporation Lubricant channel on a stator winding support
EP3160017A1 (en) * 2015-10-20 2017-04-26 Toyota Jidosha Kabushiki Kaisha Stator
DE102017218933A1 (en) 2017-10-24 2019-04-25 Bayerische Motoren Werke Aktiengesellschaft Cooling device for a stator of an electrical machine of a motor vehicle, stator and motor vehicle
DE102017130361A1 (en) 2017-12-18 2019-07-04 Lsp Innovative Automotive Systems Gmbh Stator tooth and stator with good electrical insulation and at the same time very high thermal conductivity to increase the performance of electric motors

Also Published As

Publication number Publication date
DE102020100618A1 (en) 2021-07-15

Similar Documents

Publication Publication Date Title
DE102018128521A1 (en) Support device for a rotor of an externally excited internal rotor synchronous machine, rotor, externally excited internal rotor synchronous machine and motor vehicle
DE102018112347A1 (en) Winding of an electric machine, electric machine and method of manufacturing the winding
DE102017103128A1 (en) Coil segment for a stator coil and method of making a coil segment
DE102010012708A1 (en) Stator assembly for use in electric motor, has isolator ring with inwardly protruding fingers located between respective ones of conductors extending from stator stack
DE112017006283T5 (en) System and method for stator gap casting using injected polymer
DE102017216074A1 (en) Electric motor with a clamping element
DE102018215576A1 (en) Current-compensated choke, filter, high-voltage electrical system and motor vehicle
DE102019115489A1 (en) Winding of an electric machine, stator of an electric machine, and electric machine
DE112011105077T5 (en) Core winding process and stator
WO2021143966A1 (en) Stator for an electric motor
DE102012213700A1 (en) Brush device, electric machine
WO2018137999A1 (en) Sliding cover for a component of an electrical machine
DE102015205333A1 (en) Stator for an electric machine
EP2929618A2 (en) Toothed segment/coil combination for an electric machine
DE102019008668A1 (en) Stator device for an electrical machine with a separate cooling device and electrical machine
EP2409383B1 (en) Armature assembly and electric machine including an armature assembly
DE102014223421A1 (en) Machine component for an electrical machine and an electrical machine with a cooling device
DE102017207885B4 (en) Electric machine stator and electric machine
DE102019200286B3 (en) End shield device for a high-current cable
DE102021109730A1 (en) Electric automotive traction motor
DE102018217904A1 (en) Motor component and electric motor
DE2443255A1 (en) TAPE WRAP MAGNETIC CORE
DE102010060756A1 (en) Locking wedge for a dynamoelectric machine for holding a winding in a slot
DE102014216831A1 (en) Electric machine with a disk pack
DE102020131418A1 (en) Stator with wire lead insulator

Legal Events

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

Ref document number: 20841870

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 20841870

Country of ref document: EP

Kind code of ref document: A1