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WO2015082270A2 - Segment d'enroulement pour former un enroulement d'une machine électrique, procédé de fabrication d'un segment d'enroulement - Google Patents

Segment d'enroulement pour former un enroulement d'une machine électrique, procédé de fabrication d'un segment d'enroulement Download PDF

Info

Publication number
WO2015082270A2
WO2015082270A2 PCT/EP2014/075630 EP2014075630W WO2015082270A2 WO 2015082270 A2 WO2015082270 A2 WO 2015082270A2 EP 2014075630 W EP2014075630 W EP 2014075630W WO 2015082270 A2 WO2015082270 A2 WO 2015082270A2
Authority
WO
WIPO (PCT)
Prior art keywords
winding
conductor
insulating
segment
conductor element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2014/075630
Other languages
German (de)
English (en)
Other versions
WO2015082270A3 (fr
Inventor
Christoph Radtke
Thomas SÖMMER
Bodo Von Moltke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of WO2015082270A2 publication Critical patent/WO2015082270A2/fr
Publication of WO2015082270A3 publication Critical patent/WO2015082270A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/06—Embedding prefabricated windings in the machines
    • H02K15/062—Windings in slots; Salient pole windings
    • H02K15/064—Windings consisting of separate segments
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/30—Windings characterised by the insulating material

Definitions

  • Winding segment for forming a winding of an electric machine Method for producing a winding segment
  • the present invention relates to a winding segment for forming a winding of a winding carrier, that is, a stator or a rotor, an electric machine. Furthermore, the invention relates to a method for producing a previously mentioned winding segment. In addition, the invention relates to a winding support and an electrical machine with ⁇ at least one aforementioned winding segment.
  • Winding carriers which have a laminated core together with windings wound in the laminated core and are designed as stators or rotors of the electrical machines.
  • the windings of a plurality of hairpin or U-shaped winding pins are out ⁇ forms and interlaced to form the windings in the laminated core with a spreading step corresponding to a winding step of Wick ⁇ ment carrier and inserted into the corresponding Blechunpolnuten the laminated core.
  • exposed end portions of the two bent legs of the respective winding pins protrude from the laminated core, which are interconnected to form the windings according to the winding step of the winding support and then electrically connected to each other.
  • Winding pins and the laminated core is made by means of insulating ⁇ paper.
  • the insulating paper and the winding pin are successively inserted into respective Polnut of the laminated core. Subsequently, the insulating paper and the Winding pin in a complicated process of impregnation or trickling mechanically bonded together and fixed in the Polnut.
  • the winding pins are coated with an insulating lacquer layer so that the two legs of each individual winding pin, which are inserted in one and the same laminated core pole, can be electrically insulated from one another and from the laminated core.
  • the insulating lacquer layer is used only for electrical insulation and has no own mechanical stability and requires a carrier, here in the form of the winding pins.
  • the Iso ⁇ lierlack Anlagen is vulnerable to external mechanical effects such. B. scratching by tools, whereby the paint layer during transport or when inserting the winding spins in the Blechmultipolnuten is often damaged and thus no longer provides sufficient electrical insulation.
  • the lacquer layer makes it difficult to form an intact winding and thus leads to additional expense and costs in the manufacture of electrical machines.
  • the object of the present invention is therefore to provide a way to produce electrical machines easily and inexpensively. This object is solved by subject matters of the independent claims. Advantageous embodiments are the subject of Un ⁇ terlay.
  • a winding segment for forming a winding of a winding carrier, that is to say a stator or rotor, of an electrical machine.
  • the winding segment has a first electrically conductive rod-shaped conductor element for forming the winding and an electrically insulating and independently mechanical stable insulating element, which encloses the first conductor element and electrically insulated.
  • the insulating element is attached directly and mechanically to the first conductor element.
  • an independent mechanical stability of the insulating element is about a mechanical strength of the insulating against external mechanical effects by tools that act in subsequent manufacturing steps for inserting the winding segment in a laminated core or to form the winding on the insulating.
  • This mechanical strength of the insulating member, the winding segment along with the Iso ⁇ lierelement can be inserted without destruction in the laminated core and are folded to form the winding, without the iso ⁇ lierelement is damaged, so that it after inserting and interleaving of the winding segment still sufficient electrical insulation offers between the winding segment and the laminated core.
  • the insulating element is positively, frictionally or materially ⁇ fastened to the first conductor element.
  • the insulating element is formed as a molded around the first conductor element injection molded part.
  • the insulating element can be produced inexpensively.
  • a mechanically stable connection between the conductor element and the insulating element can be produced at the same time during the molding of the insulating element.
  • the insulating element is simply attached by means of an adhesive connection to the first conductor element.
  • the insulating member surrounds the first conductor element circumferentially completely except for a first and a second end region of the first conductor element.
  • the two end portions which are not closed by the insulating member by ⁇ , are used to form electrical connections of the first conductor element of the coil segment to the circuit elements of other corresponding to the winding step in the
  • the winding segment comprises a second electrically conductive rod-shaped conductor element for forming the winding, wherein the insulating element also surrounds the second conductor element circumferentially and the first and the second conductor element mechanically interconnects and at the same time electrically insulated from each other.
  • the number of conductor elements is not a ⁇ side set to two.
  • the coil segment can preferably comprise a third and / or further electrically conductive bar-shaped conductor elements for forming the winding from ⁇ , wherein the insulating member, the third and the further conductor ⁇ elements also encloses circumferentially and the first, second, third and / or mechanically connects each further conductor element with ⁇ each other and at the same time electrically insulated from each other.
  • the preferred embodiments are described below always with reference to a winding segment with two conductor elements, these configurations also being valid for winding segments with three or more conductor elements.
  • the independent mechanical stability of the insulating member of ranges to fix the first and second circuit members together so that the winding segment inserted destruc ⁇ approximately freely in the corresponding Blechbpolnut and in accordance with the winding pitch of the winding support in
  • the insulating member also serves as a mechanical support of the two conductor elements.
  • the insulating member is also positively, positively or materially secured to the second conductor element.
  • the insulating element is formed as an over-molded around the first and the second conductor element injection-molded part.
  • the insulating element is simply attached by means of an adhesive connection to the first and the second conductor element. According to another preferred embodiment, this encloses
  • the second conductor element also with the exception of a third and a fourth end region of the first conductor element circumferentially completely, wherein the third and the fourth end region also serve to form electrical connections to the conductor elements of other winding segments.
  • a winding carrier that is to say a stator or a rotor, is provided for an electrical machine which has at least one winding which is formed from at least one winding segment described above.
  • an electrical machine which has a winding support with at least one winding, wherein the at least one winding is formed from at least one winding segment described above.
  • a method of manufacturing a winding for a coil carrier that is, a stator or a rotor, an electric machine. The method comprises the following method steps :
  • a first electrically conductive rod-shaped conductor element is thus provided.
  • a mechanically stable insulating element is fixed to the first conductor element, which also serves to strengthen the me chanical stability of the ⁇ first conductor member and circumferentially encloses said first conductor element and thus electrically isolated.
  • the first conductor element and the insulating ⁇ comprehensive element winding segment is inserted to form the winding in a laminated core.
  • the insulating element is formed by injection molding a casting compound around the first conductor element and at the same time attached to the first conductor element.
  • a further preferred embodiment of the method is provided according to the method step of providing that, in addition to the first conductor element, a second electrically conductive rod-shaped guide element for forming the winding is provided.
  • the insulating element is attached to the first conductor element and to the second conductor element for forming the winding segment, wherein the insulating element surrounds the first and the second conductor element circumferentially.
  • the insulating member is used for electrical insulation of the first and second conductor element from each other and from the laminated core and to strengthen the mechanical stability in the first and the second conductor element.
  • the winding segment comprising the first and second conductor element and the insulating element is inserted into the laminated core after the insulating element has been secured to the first and second conductor elements to form the winding.
  • the insulating element is formed by injection molding of the casting compound around the first and the second conductor element.
  • FIG. 1 shows an electrical machine according to an embodiment of the invention in a schematic cross-sectional view
  • FIG. 2 shows a stator of the electrical illustrated in FIG
  • FIG. 3 shows a winding segment of a winding of the stator illustrated in FIG. 3 in a schematic bird's-eye view
  • FIG. 4 shows a method for producing the winding segment shown in FIG. 3 in a schematic diagram.
  • FIG. 1 an electrical machine EM according to an embodiment of the invention is depicted in a schematic cross-sectional representation.
  • the electric machine EM comprises a housing GH, in which a winding support ST designed as a stator is arranged in a rotationally fixed manner in the housing GH with respect to the housing GH.
  • the electric machine EM further comprises a rotor RT with a rotor shaft RW, which is rotatably mounted in the housing GH via two shaft bearings WL relative to the stator ST.
  • FIG. 1 A detailed representation of a portion of the stator ST is shown in FIG.
  • the stator ST comprises a laminated core BP, which is designed in the manner of a hollow cylinder.
  • the laminated core BP has a number of BlechUnpolnuten NT, which are uniformly distributed in the direction of the cylinder axis AS on one of the cylinder axis AS facing inside of the laminated core BP from one axial end of the laminated core BP to another axial end of the laminated core BP extending.
  • the stator ST windings WL which are formed from a number of winding segments WS in the manner to be described below.
  • the number of winding segments WS corresponds to the number of Blechwovenpolnuten NT or the number of poles so a two times the number of pole pairs of the stator ST.
  • One of the winding segments WS is shown in detail in Figure 3, wherein in the left half of the figure A Wick ⁇ ment segment WS in its original form and in the right half of the figure, the winding segment WS is shown schematically in a state of a finished winding WL.
  • the winding segment WS in its original form comprises a first conductor element LI and a second conductor element L2 and a
  • Insulating element IS which encloses the first and the second conductor element LI, L2 circumferentially and mechanically interconnects.
  • the two conductor elements LI, L2 are rod-shaped and formed from ⁇ have a same length. Depending on requirements, the two conductor elements LI, L2 can also be designed differently long. In addition, the two conductor elements LI, L2 spatially next to each other, however, are spaced from each other.
  • the insulating element IS is formed by injection molding a casting compound around the two conductor elements LI, L2.
  • the casting compound used consists of an electrically insulating material, so that the insulating element IS after hardening the two conductor elements LI and L2 from each other and electrically isolated from the environment.
  • the casting compound After hardening, the casting compound also forms the insulating element IS, which forms an H-shaped insulating body with a central main section HA as a "fuselage" and two each from the
  • the insulating element IS preferably has a higher material thickness or thickness in the main section HA than in the four sections TAI, TA3, TA2 and TA4.
  • the insulating element IS in the main section HA higher independent mechanical stability than in the four Operaab ⁇ sections TAI, TA3, TA2 and TA4, whereby the two conductor elements LI, L2 can be held together by this main section HA with sufficient mechanical forces.
  • the insulating element IS has a certain elasticity in the four sections TAI, TA3, TA2 and TA4, so that the four sections TAI, TA3, TA2 and TA4 can also be bent during bending or when interleaving the conductor elements LI, L2, without to break apart.
  • the two conductor elements LI, L2 are cast in such a way by the casting compound that a first end region EB1 and a second end region EB2 of the first conductor element L1 and a third end region EB3 and a fourth end region EB4 of the second conductor element L2 are not separated from the casting compound or the insulating element IS are covered.
  • These four end regions EB1, EB2, EB3 and EB4 are used for electrical connection with other winding segments to form the winding WL.
  • the winding segment WS or its two conductor elements LI, L2 together with the insulating element IS are inserted into a designated Polnut NT.
  • the two conductor elements LI, L2 are respectively in an inner, the cylinder axis AS of the laminated core BP facing position of a pole groove NT and in an outer, the cylinder axis AS of the laminated core BP remote from the position of the pole groove NT. Viewed from the cylinder axis AS, the two conductor elements LI and L2 thus lie radially one behind the other.
  • the main section HA of the insulating element IS is pressed together with the corresponding portions of the two conductor elements LI, L2 enveloped by this main section HA into the pole slot NT of the laminated core BP or lowered into it.
  • the four subsections TAI, TA3, TA2 and TA4 of the insulating element IS are, together with the sections of the two conductor elements LI, L2 enveloped by these subsections TAI, TA3, TA2 and TA4 and the four end regions EB1, EB2, EB3 and EB4 of the two conductor elements LI, L2 protrude from the pole groove NT and thus from the laminated core BP.
  • the two sections of the two conductor elements LI, L2 enveloped by the sections TAI, TA3 of the insulating element IS are, together with the two sections TAI, TA3, entangled with a spreading step corresponding to the winding step of the stator ST, as illustrated in the right half of FIG.
  • the two sections of the first conductor element LI enveloped by the subsections TAI, TA2, together with the two subsections TAI, TA2 are entangled in two mutually opposite directions.
  • the two sections of the second conductor element L2 enveloped by the sections TA3, TA4, together with the two sections TA3, TA4, are entangled in two mutually opposite directions.
  • the first end region EB1 of the first conductor element LI is connected to a third end region EB3 ⁇ of a second conductor element L2 ⁇ of another, corresponding to the winding step of the stator ST of FIG the winding segment WS spaced in the laminated core BP to ⁇ ordered winding segment WS ⁇ directly electrically connected.
  • Winding segments WS are in each case directly electrically connected to an end region of a further winding segment , not shown, corresponding to the winding step of the stator ST, spaced apart from the winding segment WS in the laminated core BP.
  • Such an arrangement and such electrical connections of the winding segments WS continue over the entire laminated core BP and thus form a winding WL.
  • winding segments having three or more conductor ⁇ elements and be provided with an insulating member, said insulating element then encloses the three or more conductor elements in the previously described manner circumferentially together mechanically holds together and apart and electrically insulated from the environment.
  • a first and a second electrically conductive rod-shaped conductor element LI, L2 are provided.
  • the two conductor elements LI, L2 cut or punched from a metal wire or metal bar to the same or different predetermined final length.
  • Insulating element IS attached to the first and the second conductor element L I, L2.
  • a casting compound of an electrically insulating material is poured onto the two conductor elements L I, L2 in an injection molding process. After hardening, the casting compound forms the insulating element IS with an independent mechanical stability, which electrically isolates and mechanically holds the two conductor elements L I, L2 apart from one another and from the environment.
  • the two conductor elements L I, L2 to the respective two end portions EBL, EB2, EB3 and EB4 with the casting compound poured over, so that the end portions EBL, EB2, EB3 and EB4 are not covered by the insulating element IS and electrically insulated.
  • the insulating element IS thus forms with the first and the second conductor element L I, L2 a one-piece and mechanically stable winding segment WS for forming a winding WL.
  • two "endless" metal wires or metal rails can first be cast with the casting compound and cut or punched in the conductor elements LI, L2 after hardening of the casting compound.
  • EB3 and EB4 of the two conductor elements LI, L2 are removed again, so that these four end regions EBL, EB2, EB3 and EB4 are not covered by the casting compound or the insulating element IS.
  • the insulating element IS can also be produced by extrusion of a viscous curable composition of an electrically insulating material.
  • the mass can be applied in an extrusion process to the two conductor elements LI, L2 except for respective two end regions EB1, EB2, EB3 and EB4. After hardening, the mass then forms the insulating element IS.
  • the winding segment WS is inserted according to a method ⁇ step S300 in a corresponding Polnut NT of a laminated core BP and then in a manner known to those skilled in accordance with the winding step of the stator ST with

Landscapes

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

Abstract

L'invention concerne un segment d'enroulement (WS) servant à former un enroulement (WL) d'une machine électrique (EM), comprenant un premier élément électriquement conducteur (L1) en forme de barre servant à former l'enroulement (WL), et un élément électriquement isolant (IS) mécaniquement stable de façon autonome qui entoure circonférentiellement et isole électriquement le premier élément conducteur (L1), l'élément isolant (IS) étant fixé au premier élément conducteur (L1). Une machine électrique (EM) comportant de tels segments d'enroulement (WS) peut être fabriquée de façon simple et à bon marché.
PCT/EP2014/075630 2013-12-06 2014-11-26 Segment d'enroulement pour former un enroulement d'une machine électrique, procédé de fabrication d'un segment d'enroulement Ceased WO2015082270A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013225130.0A DE102013225130A1 (de) 2013-12-06 2013-12-06 Wicklungssegment zur Bildung einer Wicklung einer elektrischen Maschine, Verfahren zur Herstellung eines Wicklungssegments
DE102013225130.0 2013-12-06

Publications (2)

Publication Number Publication Date
WO2015082270A2 true WO2015082270A2 (fr) 2015-06-11
WO2015082270A3 WO2015082270A3 (fr) 2015-08-27

Family

ID=52011180

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/075630 Ceased WO2015082270A2 (fr) 2013-12-06 2014-11-26 Segment d'enroulement pour former un enroulement d'une machine électrique, procédé de fabrication d'un segment d'enroulement

Country Status (2)

Country Link
DE (1) DE102013225130A1 (fr)
WO (1) WO2015082270A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017036687A1 (fr) * 2015-09-03 2017-03-09 Continental Automotive Gmbh Stator à enroulement à barres isolé pour machine électrique
CN115298934A (zh) * 2020-03-30 2022-11-04 罗伯特·博世有限公司 具有易弯曲的电导体和成形的绝缘体的电机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017218078A1 (de) 2017-10-11 2019-04-11 Robert Bosch Gmbh Stator für eine elektrische Maschine
DE102018112347A1 (de) 2018-05-23 2019-11-28 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Wicklung einer elektrischen Maschine, elektrische Maschine und Verfahren zum Herstellen der Wicklung
DE102019113432A1 (de) * 2019-05-21 2020-11-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Stator einer elektrischen Maschine und elektrische Maschine
DE102019115489A1 (de) * 2019-06-07 2020-12-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Wicklung einer elektrischen Maschine, Stator einer elektrischen Maschine und elektrische Maschine

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JPH10285882A (ja) * 1997-04-09 1998-10-23 Hitachi Ltd 絶縁コイルの製造方法並びに電気機械及び回転電気機械
JPH1169685A (ja) * 1997-08-07 1999-03-09 Fuji Electric Co Ltd 回転電気機械用のコイル
JP4462392B2 (ja) * 2000-02-23 2010-05-12 三菱電機株式会社 交流発電機の固定子の製造方法
DE10023208A1 (de) * 2000-05-12 2001-11-15 Alstom Power Nv Isolierung von Statorwicklungen im Spritzgussverfahren
DE10362345B3 (de) * 2002-05-15 2018-01-25 Remy Inc. Wicklungen aus rechtwinkligen Kupferhaarnadeln in mehreren Sätzen für elektrische Maschinen
US8384263B2 (en) * 2008-02-14 2013-02-26 Hitachi, Ltd. Rotating electrical machine having a compact stator
JP5842856B2 (ja) * 2013-04-08 2016-01-13 株式会社デンソー 回転電機の固定子

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017036687A1 (fr) * 2015-09-03 2017-03-09 Continental Automotive Gmbh Stator à enroulement à barres isolé pour machine électrique
CN107852056A (zh) * 2015-09-03 2018-03-27 大陆汽车有限公司 用于电机的具有绝缘线棒绕组的定子
CN115298934A (zh) * 2020-03-30 2022-11-04 罗伯特·博世有限公司 具有易弯曲的电导体和成形的绝缘体的电机

Also Published As

Publication number Publication date
DE102013225130A1 (de) 2015-06-11
WO2015082270A3 (fr) 2015-08-27

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