EP1704629A1 - Noyau feuillete d'induit pour un moteur electrique - Google Patents

Noyau feuillete d'induit pour un moteur electrique

Info

Publication number
EP1704629A1
EP1704629A1 EP04766752A EP04766752A EP1704629A1 EP 1704629 A1 EP1704629 A1 EP 1704629A1 EP 04766752 A EP04766752 A EP 04766752A EP 04766752 A EP04766752 A EP 04766752A EP 1704629 A1 EP1704629 A1 EP 1704629A1
Authority
EP
European Patent Office
Prior art keywords
anchor
channel
winding
armature
package
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.)
Withdrawn
Application number
EP04766752A
Other languages
German (de)
English (en)
Inventor
Juergen Wiker
Joachim Schadow
Mario Frank
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.)
Robert Bosch GmbH
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 EP1704629A1 publication Critical patent/EP1704629A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/26—Rotor cores with slots for windings
    • H02K1/265—Shape, form or location of the slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H02K1/165—Shape, form or location of the slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
    • 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
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium

Definitions

  • the invention is based on an armature package for an electric motor with the generic features of claim 1.
  • armature packages for electric motors To manufacture armature packages for electric motors, individual armature sheets are punched in such a way that cutouts for armature windings are punched into the sheet in the same operation.
  • the armature windings are wound into these winding slots and fixed in position by impregnation with a suitable material. In principle, two methods are known for this.
  • the wound anchor package is sealed by dipping and rolling in the impregnating material (eg polyester resin).
  • the impregnating material is then hardened so that the winding with the armature package is a rigid structure.
  • trickling a variant of dip rolling, the anchor package is rotatably received in a suitable device and drizzled with the impregnation material.
  • the impregnation material is then hardened as with dip rolling.
  • immersion rolling and trickling is that the impregnating material does not always penetrate into all the cavities between the armature windings. To ensure that these cavities are completely filled, everyone must Process parameters, such as temperature, viscosity, winding density of the wires and ventilation, must be optimally coordinated with one another and adhered to as precisely as possible.
  • Kxeuz bandages made of paper or plastic cords are used for additional fixation.
  • These bandages provide a certain protection of the windings against abrasive grinding dusts and on andexing an additional fixation of the position of the windings in the package. This essentially compensates for the deficiencies in the impregnation, but this method is very complex and therefore also expensive in the manufacturing process that it is only used for high quality engines.
  • An armature package according to the invention for an electric motor with the features of claim 1 has the advantage over the fact that, due to the winding grooves assigned to a channel and having different geometries, the armature windings are better fixed in their position. This also reduces the number of turns that are otherwise caused by the friction of loose winding wires. A reduction in vibrations is also achieved, since the armature winding, even after the impregnation material has hardened, It is no longer possible to shift radial numbers and thus high centrifugal forces radially, so that there is no change in the mass center of gravity. The same also applies to an armature package according to the invention for an electric motor with the features of claim 4, since the impregnation material also easily reaches the lower windings through the inflow channels.
  • every second winding groove of a channel has a larger cross-section than the winding groove of the adjacent anchor plate, the impregnation material can reach the bottom of the winding groove deeply, so that it reaches the innermost winding wires through the capillary action and afterwards Curing fixed against any kind of movement.
  • the impregnation material can reach the bottom of the winding groove deeply, so that it reaches the innermost winding wires through the capillary action and afterwards Curing fixed against any kind of movement.
  • every second winding groove has a larger cross-section than the adjacent winding grooves of the same anchor plate
  • anchor plates that are manufactured with the same punching tool can be rotated against each other by an adjacent winding groove to form a regular pattern of winding grooves with a small cross-section and winding grooves with large cross-section can be produced over the entire anchor package.
  • the impregnating material very well reaches all inflow channels and thus to the winding wires located deep down in the individual be angular or arbitrarily shaped.
  • transverse channel lies between the winding groove and the central longitudinal axis of the armature stack has the least influence on the magnetic flux, since the transverse channel is very close to the center of the armature package.
  • the inflow channels are each formed as at least one punching in the respective anchor plate, which encompass the transverse channel, a very simple and inexpensive manufacture of the individual anchor plates, which are then joined together to form the anchor package.
  • two or more die cuts are also possible. This applies in particular to an oval or rectangular cross channel.
  • each winding groove has a narrowing at the outer end, in particular with two undercuts, ensures good insertion and protection of the winding wires lying in the winding grooves against mechanical wear from the outside.
  • FIG. 1 shows an isometric view of a first exemplary embodiment of an anchor package according to the invention
  • FIG. 2 shows a sectional illustration of an individual winding groove of the anchor package from FIG. 1 on an enlarged scale
  • FIG. 3 shows the side view of the anchor package from FIG. 1,
  • FIG. 4 shows a second exemplary embodiment according to the invention in a side view as in FIG. 3, but with a different geometry of the individual anchor plates,
  • FIG. 5 shows a detail of a winding groove according to FIG. 2 from an anchor plate of a third exemplary embodiment according to the invention with an inflow channel and a radial punched-out section
  • FIG. 6 shows a detail of a winding groove according to FIGS. 2 and 5 of a fourth exemplary embodiment according to the invention with a longitudinal one Figure 6 ac three consecutive anchor plates according to the embodiment shown in Figure 6 and
  • FIG. 7 shows a section of a winding groove according to FIGS. 2, 5 and 6 of a fifth exemplary embodiment according to the invention with two longitudinal transverse channels.
  • FIG. 1 to 3 show a first exemplary embodiment of an anchor package 1 according to the invention.
  • the armature package 1 without armature winding 5 (see FIG. 2) is shown in FIG. 1.
  • the anchor package 1 has a plurality of anchor plates 2, 3 lined up along a central longitudinal axis 17.
  • the anchor plates 2, 3 have winding grooves 4 along their circumference. In the case shown, there are a total of twelve winding grooves 4, which are each arranged equidistant from one another.
  • the winding grooves 4 are designed such that they have a constriction 15 on the circumference of the respective armature plate 2, 3, which widens over two undercuts 16 to form a larger cross section.
  • the twelve winding grooves 4 shown are merely examples; any other number of winding grooves 4 can also be formed in the armature plates 2, 3.
  • the winding grooves 4 also do not have to be equidistant from one another.
  • the winding grooves 4 of the individual armature plates 2, 3 arranged one behind the other are aligned such that a channel 6 aligned with the central longitudinal axis 17 is formed in each case.
  • the armature winding 5 (see FIG. 2) is drawn into this channel 6.
  • the winding grooves 4 of two adjacent armature plates 2, 3 are designed differently in terms of their cross section.
  • the first anchor plate 2 shown in FIG. 1 has winding grooves 4 with a smaller cross section than the second anchor plate 3.
  • FIG. 2 shows a section through a second anchor plate 3 perpendicular to the central longitudinal axis 17. It can be clearly seen here that the cross section of the winding groove 4 of the second armature plate 3 is larger than that of the armature plate 2, which protrudes beyond the outline of the winding groove 4 of the second armature plate 3 in the illustration. This results in both a wider narrowing 15 'and undercuts for the winding groove 4 of the second anchor plate 3
  • the entire winding groove 4 of the second anchor plate 3 is wider and deeper than the winding groove 4 of the first anchor plate 2.
  • the armature winding 5 has been introduced into the channel 6 in an insulating paper 18 in a known manner. It is limited in its scope by the winding groove 4 of the first armature plate 2, which has the smaller cross section. This results in a cavity surrounding the armature winding 5 in the winding groove 4 of the second armature plate 3.
  • the anchor package 1 is impregnated by means of an impregnation material according to the known methods, the impregnation material can reach deep to the bottom of the winding groove 4 of the second anchor plates 3. Due to capillary action, the impregnation material reaches the innermost winding wires and fixes them after hardening against any kind of movement. This means that the winding wires in the winding slots 4 can no longer move and therefore no interlocks means that the service life of the motor in which the armature package 1 is installed is extended compared to the armature packages known from the prior art.
  • FIG. 3 shows a side view of the anchor package 1 described above, which is arranged on an anchor shaft 19.
  • the surface pattern of the anchor stack 1 can be seen due to the different constrictions 15 of the individual anchor plates 2, 3.
  • the armature windings 5 are not shown for better visibility.
  • the narrow constrictions 15 of the first anchor plate 2 extend up to the narrow lines drawn through, which extend continuously parallel to the central longitudinal axis 17.
  • FIG. 4 shows a different surface pattern based on a different combination of anchor plates 2, 3, 3 'in the form of a second exemplary embodiment.
  • the first anchor plates 2 and the second anchor plates 3 are configured in the same way as those of the first exemplary embodiment (FIGS. 1-3).
  • third anchor plates 3 * there are also third anchor plates 3 *. These have an enlarged cross section only for every second winding groove 4.
  • the remaining winding grooves 4 of the third armature plate 3 ' have the same size as the winding grooves 4 of the first armature plate 2.
  • FIG. 5 shows a third exemplary embodiment according to the invention.
  • the groove 4 is of the same * design in all anchor plates 7, as is known from the prior art.
  • an embodiment of the winding grooves 4 in accordance with one of the two previously described exemplary embodiments is entirely possible.
  • An armature winding 5 is introduced into the winding groove 4 in an insulating paper 18.
  • a vertical part 21 of an inflow channel 11 is punched into the anchor plate 7 from the surface of the anchor plate 7.
  • a horizontal part 20 of the inflow channel 11 is punched in the additional anchor plate behind it (covered by the anchor plate 7 shown).
  • the horizontal part 20 of the inflow channel 11 opens into the winding groove 4 at its lower end facing the center of the armature package 1.
  • This alternating arrangement of anchor plates 7 with vertical part 21 and horizontal part 20 is repeated over the entire length of the anchor package 1.
  • the embodiment shown has the effect that the impregnation material is well supplied to the winding wires located deep down by the additional inflow channels 11.
  • FIGS. 6 and 6 a-c show a fourth exemplary embodiment, which is constructed in a similar way to the third exemplary embodiment shown in FIG. 5.
  • the armature plates 8, 9, 10 arranged one behind the other are designed such that their winding grooves 4 all have the same cross section.
  • an embodiment according to one of the first two exemplary embodiments, which are shown in FIGS. 1 to 4 can take place.
  • the inflow channel 11, which there has an opening in the surface of the anchor plate 7, is replaced in the form of a transverse channel 12 which runs essentially parallel to the central longitudinal axis 17 (not shown).
  • the transverse channel 12 In the front anchor plate 8 shown in FIG. 6 a, only the transverse channel 12 is present below the winding groove 4.
  • the central anchor plate 9 located behind it has an oblique right punched-out 13, which is connected to the lower end of the winding groove 4.
  • the rear anchor plate 10 adjoining the middle anchor plate 9 has a mirror image borrowed to the right punch 13 trained left punch 14.
  • the left punch 14 is also connected to the lower part of the winding groove 4.
  • an embodiment according to the fourth exemplary embodiment also has the decisive advantage, even when trickling, that improved ventilation takes place and thus the formation of voids is greatly reduced.
  • such an object has the advantage that the transverse channel 12, the right punch 13 and the left punch 14 are very close to the center of the armature plate and thus have little influence on the magnetic flux.
  • FIG. 7 shows a fifth exemplary embodiment, which is constructed similarly to the fourth exemplary embodiment shown in FIGS. 6 and 6 ac.
  • the armature plates 7 arranged one behind the other are designed such that their winding grooves 4 all have the same cross section.
  • a configuration according to one of the first two exemplary embodiments, which are shown in FIGS. 1 to 4 can take place.
  • the transverse channel 12 is not designed to be circular, but in the form of an oval punched-out 23.
  • the anchor package 1 has anchor plates 7 which have L-shaped punched sections 24 extending from the winding groove 4.
  • the L-shaped punchings 24 have a vertical part 22 and a horizontal part 25.
  • the two vertical parts 22 are connected to the winding groove 4 on the sides of the lower region thereof.
  • the two horizontal parts 25 are directed towards one another.
  • a web 26 remains between the two L-shaped punchings 24. This web 26 is made narrower in the area of the horizontal parts 25 than in the area of the vertical parts 22.
  • an oval stamping 23, shown in dashed lines, is formed, which has no connection to the winding groove 4.
  • the oval punch 23 is arranged in such a way that it is at least partially flush with the horizontal parts 25 of the L-shaped punch 24.
  • two transverse channels 12, which are aligned parallel to the central longitudinal axis (not shown) of the anchor package 1, are formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Windings For Motors And Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un noyau feuilleté d'induit (1) destiné à un moteur électrique et comprenant plusieurs tôles d'induit (2, 3) dans lesquelles sont réalisées respectivement plusieurs encoches d'enroulement (4) pour le logement d'un enroulement d'induit (5), les encoches d'enroulement (4) de tôles d'induit voisines (2, 3) étant alignées les unes par rapport aux autres et formant un conduit (6). L'invention vise à atteindre une meilleure fixation en position de l'enroulement d'induit (5). A cet effet, les encoches d'enroulement (4), affectées à un conduit (6), de différentes tôles d'induit (2, 3) ont des géométries différentes. Selon un autre mode de réalisation de l'invention, au moins une partie des encoches d'enroulement (4) présentent respectivement un conduit d'amenée (11) qui débouche respectivement dans leur zone orientée vers le centre du noyau feuilleté d'induit (1).
EP04766752A 2003-09-12 2004-09-09 Noyau feuillete d'induit pour un moteur electrique Withdrawn EP1704629A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342151 2003-09-12
PCT/EP2004/052107 WO2005027310A1 (fr) 2003-09-12 2004-09-09 Noyau feuillete d'induit pour un moteur electrique

Publications (1)

Publication Number Publication Date
EP1704629A1 true EP1704629A1 (fr) 2006-09-27

Family

ID=33103709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04766752A Withdrawn EP1704629A1 (fr) 2003-09-12 2004-09-09 Noyau feuillete d'induit pour un moteur electrique

Country Status (6)

Country Link
US (1) US7365469B2 (fr)
EP (1) EP1704629A1 (fr)
CN (1) CN1849737A (fr)
DE (1) DE102004044136A1 (fr)
GB (2) GB2406001B (fr)
WO (1) WO2005027310A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0524363D0 (en) * 2005-11-29 2006-01-04 Goodrich Control Sys Ltd Dynamo electric machine
JP2008295264A (ja) * 2007-05-28 2008-12-04 Toshiba Corp 回転電機の回転子
EP2113991B1 (fr) * 2008-05-02 2015-07-15 Siemens Aktiengesellschaft Stator coulé d'une machine dynamoélectrique
DE102008057390A1 (de) * 2008-11-14 2010-05-20 Robert Bosch Gmbh Segmentierte Stator-/Rotorelemente von Elektromotoren
KR101628150B1 (ko) * 2014-11-14 2016-06-21 현대자동차 주식회사 계자권선형 구동모터의 회전자
CN107925290B (zh) * 2015-08-10 2020-05-22 日本电产株式会社 马达、马达的制造方法以及定子单元
DE102017208550A1 (de) * 2017-05-19 2018-11-22 Mahle International Gmbh Elektrische Maschine, insbesondere für ein Fahrzeug
CN107482800B (zh) 2017-08-16 2019-02-01 北京金风科创风电设备有限公司 电机导磁部件、电机绕组结构、电机以及风力发电机组
DE202017006523U1 (de) * 2017-12-20 2018-02-07 PVS-Kunststofftechnik GmbH & Co. KG Stator-/ Rotorvorrichtung für Elektromotoren
DE202018004918U1 (de) * 2018-10-23 2019-01-08 PVS-Kunststofftechnik GmbH & Co. KG Stator-/Rotorvorrichtung für Elektromotoren
CN109980812B (zh) * 2019-03-27 2020-10-27 西安交通大学 一种转子结构及电磁轴承和电磁加载装置
DE102021128840A1 (de) 2021-11-05 2023-05-11 Ebm-Papst Mulfingen Gmbh & Co. Kg Elektromotor

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US3469136A (en) * 1968-03-21 1969-09-23 Lucas Industries Ltd Laminated stators for dynamo electric machines
JPS5379202A (en) 1976-12-23 1978-07-13 Fujitsu Ltd Slot winding type armature
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JPS55157949A (en) * 1979-05-24 1980-12-09 Mitsubishi Electric Corp Armature for dc machine
FR2494926A1 (fr) * 1980-11-24 1982-05-28 Marchal Equip Auto Procede de fabrication de stator ou rotor annulaire comportant des dents polaires exterieures
FR2494916A1 (fr) * 1980-11-25 1982-05-28 Thomson Csf Circulateur pour la transmission d'ondes electromagnetiques hyperfrequence
SU951574A1 (ru) * 1980-12-19 1982-08-15 Предприятие П/Я М-5537 Способ изготовлени шихтованных магнитопроводов электрических машин
JPS5849053A (ja) 1981-09-16 1983-03-23 Toshiba Corp 電動機の固定子鉄心
JPS6315657A (ja) 1986-07-03 1988-01-22 Fanuc Ltd かご形回転子の構造
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JPH0732573B2 (ja) * 1987-06-03 1995-04-10 株式会社日立製作所 回転電機子の製造方法
JPH0426344A (ja) 1990-05-16 1992-01-29 Shibaura Eng Works Co Ltd 誘導電動機のかご形回転子の鉄心
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Also Published As

Publication number Publication date
GB2420231A (en) 2006-05-17
GB2406001A (en) 2005-03-16
WO2005027310A1 (fr) 2005-03-24
GB0419202D0 (en) 2004-09-29
US7365469B2 (en) 2008-04-29
DE102004044136A1 (de) 2005-04-07
US20060214531A1 (en) 2006-09-28
GB2420231B (en) 2006-08-02
GB2406001B (en) 2006-04-19
GB0603141D0 (en) 2006-03-29
CN1849737A (zh) 2006-10-18

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