WO2019134789A1 - Connexion fixe dans un boîtier - Google Patents

Connexion fixe dans un boîtier Download PDF

Info

Publication number
WO2019134789A1
WO2019134789A1 PCT/EP2018/084137 EP2018084137W WO2019134789A1 WO 2019134789 A1 WO2019134789 A1 WO 2019134789A1 EP 2018084137 W EP2018084137 W EP 2018084137W WO 2019134789 A1 WO2019134789 A1 WO 2019134789A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
stator
electric machine
formation
shows
Prior art date
Application number
PCT/EP2018/084137
Other languages
German (de)
English (en)
Inventor
Wolfgang Wetzel
Axel Wittig
Original Assignee
Webo Werkzeugbau Oberschwaben 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 Webo Werkzeugbau Oberschwaben Gmbh filed Critical Webo Werkzeugbau Oberschwaben Gmbh
Publication of WO2019134789A1 publication Critical patent/WO2019134789A1/fr

Links

Classifications

    • 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
    • H02K15/14—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • 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
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators

Definitions

  • the present invention relates to a method of making a connection between a stator of an electric machine and the case thereof and an electric machine whose connection of its stator to a case is made by such a method.
  • stators of electric machines wherein the electric machine in question may be an electric motor or a generator.
  • the stator is arranged in a housing, which is also referred to as a pot.
  • the housing serves to support the stator, whereby the torque of the electric machine can be absorbed.
  • noise is avoided by a loose connection between the stator and the housing by a rigid connection between the stator and the housing.
  • the inner profile of the housing must therefore be adapted to the outer contour of the stator with a very tight tolerance. Through this required small Tolerances result in high production costs in the manufacture of the housing.
  • the stator is additionally glued to the housing.
  • An object is therefore to produce a connection of a stator with its housing such that a cost-effective production of the housing is made possible.
  • a method of making a fixed connection between a stator and a first housing, wherein the stator has a first formation on its outer surface and the first housing has a second formation on its inner surface comprising the steps of: inserting of the stator in the first housing and pressing or pressing the second molding in the first formation.
  • an electric machine is provided with a stator and a first housing, wherein the first housing according to one of claims 1 to 4 is arranged on the stator.
  • a method is provided, wherein the pressing or pressing is performed by the method of rolling.
  • Forming is formed and / or wherein the first recess is a nose and wherein the second formation is a groove and / or wherein the second formation is a nose and the first formation is a groove.
  • the housing can be a complementary shape, for example as a nose, which engages in a matching recess, in particular groove, the housing can
  • a method comprising the step of at least partially precipitating the recesses between the pole shoes of the stator and / or precipitating the interior of the stator so that the stator is fully or at least partially precipitated during impressing or pressing ,
  • the stator By precipitating the internal structure of the stator, the stator is supported, thereby preventing damage or deformation during a rolling operation.
  • an electric machine wherein the electric machine comprises a second housing, wherein between the first housing and the second housing, a cooling channel for guiding a fluid is formed and / or wherein the fluid is a liquid for cooling ,
  • the cooling channel may be formed in an alternative embodiment as Vollmantelkühlung.
  • Electric machine provided, wherein between the first housing and the second housing 1, 2, 3, 4, 5 or any number of cooling channels are formed along the longitudinal axis of the electric machine or helically around the
  • Longitudinal axis or meandering around the longitudinal axis are formed.
  • an electric machine is provided, wherein the wall of a cooling channel results at least partially by the second formation.
  • an electric machine wherein a bearing for a rotor of the electric machine is arranged on the first housing and / or on the second housing.
  • an electric machine wherein the electric machine is an electric motor or an electric generator.
  • FIG. 1 shows a housing 3 for a stator in a cross section
  • FIG. 3 shows a housing 3 with noses 17 rolled up by a first raw process in cross section
  • FIG. 5 shows a stator 7 in a plan view, which is inserted in a housing 3, wherein lugs 17 of the housing 3 engage in grooves 1 of the stator,
  • FIG. 10 shows the stator 7 in the housing 3 after a further raw operation, whereby lugs 17 of the housing 3 are pressed into grooves 1 of the stator 7, 11 the stator 7 in a cross section with lugs 17 of the housing 3, which are pressed into recesses 1 of the stator 7,
  • Fig. 13 the stator 7 in the housing 3 in a plan view in another
  • FIG. 15 shows the detail XV of FIG. 14 with the stator 7 and the housing 3, FIG.
  • stator 7 with filled recesses 4 and filled interior to increase the mechanical stability of the stator 7,
  • FIG. 18 shows an alternative embodiment of the invention with a first and a second housing 3, 18, wherein between the housings 3 and 18 cooling channels 12 and 13 are formed,
  • Fig. 20 shows a further alternative embodiment of the invention, wherein the second housing 18 is additionally formed as a rotor bearing 15 and Fig. 21 shows a still further alternative embodiment of the invention, wherein between the first and the second housing 3 and 18, a radially formed cooling channel 16 is arranged.
  • Fig. 1 shows a housing 3 for a stator of an electric machine according to a first manufacturing stage as a cylinder-shaped component in a plan view.
  • FIG. 2 shows the housing 3 in the first production stage in a sectional view along its longitudinal axis 2.
  • the housing 3 has a cylindrical shape in order to be able to receive a stator with a precise fit.
  • Fig. 3 shows a housing 3 with lugs 17 for a further manufacturing stage, which are provided for fixing the housing 3 with an inserted stator 7.
  • the 4 shows the lugs 17 in a sectional view of the housing 3.
  • the lugs 17 are initially rolled forward in a first production step.
  • Fig. 5 shows the housing 3 in a subsequent manufacturing stage, wherein a stator 7 is inserted into the housing 3.
  • the stator 7 has grooves 1, which are formed complementary to the lugs 17 of the housing. This results in a fixation of the stator 7 with the housing 3, whereby moments of the electric machine can be absorbed by the housing 3.
  • the stator 7 has recesses 4 for receiving winding packages and pole shoes 5 for guiding the magnetic flux.
  • Fig. 6 shows the housing 3 and the stator 7 in longitudinal section with
  • FIG. 7 shows a plan view of the stator 7 with the housing 3, wherein after a further rolling operation, the lugs 17 of the housing 3 are pressed into the grooves 1. This results in a positive connection and the stator 7 is rigidly connected to the housing 3.
  • Fig. 8 shows the positive connection of the stator 7 and the housing 3 in a longitudinal sectional view.
  • FIG. 9 shows a top view of the stator 7, which is inserted into the housing 3 such that the lugs 17 of the housing 3 engage in the grooves 1 of the stator 7.
  • Fig. 10 shows a longitudinal sectional view of the joined components.
  • FIG. 11 shows the joined components, namely stator 7 and housing 3.
  • Fig. 12 shows the section XII of the cross section of the stator 7 with the housing 3, wherein the nose 17 engages in the groove 1.
  • Fig. 12 shows the section XII of the cross section of the stator 7 with the housing 3, wherein the nose 17 engages in the groove 1.
  • Fig. 13 shows the positive connection of the lugs 17 with the grooves 1 by a further rolling process, wherein an embossing die 6, the lugs 17 presses into the grooves 1 such that the positive connection results.
  • Fig. 14 shows the lugs 17 which are pressed into the grooves 1.
  • Fig. 15 shows the section XV of the cross section of the stator 7 with the groove 1 and the nose 17 of the housing 3, wherein a die 6, the nose 17 presses into the groove 1 in an additional rolling process. This results in a positive fit
  • Connection. 16 shows a stator 7 whose recesses 4 for the winding packages and its interior are filled with a filling material 10 in such a way that there is no change in the geometric shape of the stator 7, in particular no pinching of the pole shoes or deformation of the recesses 4 in a second rolling process , can result.
  • Fig. 17 shows the section XVII with the punch 6 with which the rolling process is carried out, in which the nose 17 is pressed into the groove 1, wherein in the rolling operation advantageously the recesses 4 are filled with a filler 10. This results in a mechanical support for the internal geometry of the stator 7 during the rolling process.
  • FIG. 18 shows the device according to the invention with a stator 7 which is inserted in a housing 3.
  • the device has a further housing 18 or a pot, in which the stator 7 is arranged with the housing 3 in such a way that cooling channels 12 result.
  • grooves of the housing 3 resulting from the deformation of the lugs 17 can be used as at least partially wall of cooling channels 13.
  • the cooling channels 12 and 13 can be guided along the longitudinal axis 2 of the stator 7 and the housing 3 or be formed radially.
  • the device according to the invention can be 1, 2, 3, 4, 5, 6 or any number
  • Fig. 19 shows a device according to the invention with flanges 14 for fixing the electric machine.
  • Fig. 20 shows a device according to the invention in a longitudinal section, wherein the housing 18 or the housing 3 of the device can be formed such that there is a rotor bearing for the rotor of the corresponding electric machine.
  • Fig. 21 shows an alternative embodiment of the invention with a cooling channel 16, which may be formed radially along the circumference. It can be 1, 2, 3, 4,
  • cooling channels 5 or any number of cooling channels can be formed, which are guided completely or partially around the circumference of the housing 1.
  • the stator may be integral or composed of several parts, wherein the individual stator elements 1, 2, 3, 4, 5 or any number of pole pieces may comprise.
  • the material of the housing 3 and / or of the housing 18 can consist of sheet steel, stainless steel sheet, non-ferrous metal, aluminum or another material or comprise this material.
  • the aluminum material for the housing 3 and / or the housing 18 the cooling efficiency of the respective engine and therefore the engine efficiency can be improved.
  • cooling channel for conducting a fluid wherein the cooling channel in cross-section comprises the housing 1

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne un procédé permettant de réaliser une connexion fixe dans un boîtier (3), le stator (7) présentant un premier renfoncement (1) sur une surface extérieure et le boîtier (3) présentant un second renfoncement (17) sur sa surface intérieure, ledit procédé comprenant les étapes suivantes : insertion dans le boîtier (3) et introduction par pression ou compression du second renfoncement (17) dans le premier renfoncement (1).
PCT/EP2018/084137 2018-01-05 2018-12-10 Connexion fixe dans un boîtier WO2019134789A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018100165.7A DE102018100165A1 (de) 2018-01-05 2018-01-05 Feste Verbindung in einem Gehäuse
DE102018100165.7 2018-01-05

Publications (1)

Publication Number Publication Date
WO2019134789A1 true WO2019134789A1 (fr) 2019-07-11

Family

ID=64664298

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/084137 WO2019134789A1 (fr) 2018-01-05 2018-12-10 Connexion fixe dans un boîtier

Country Status (2)

Country Link
DE (1) DE102018100165A1 (fr)
WO (1) WO2019134789A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019215563A1 (de) * 2019-10-10 2021-04-15 Zf Friedrichshafen Ag Stator einer elektrischen Maschine
CN114499007A (zh) * 2020-10-28 2022-05-13 法雷奥西门子新能源汽车德国有限责任公司 旋转电机以及制造旋转电机的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009072A (en) * 1958-01-28 1961-11-14 Scott L & Electromotors Ltd Fluid cooled motors
DE2712568A1 (de) * 1977-03-22 1978-09-28 Friedrich Schweinfurter Verfahren zur herstellung eines elektromotor-grundbauteils
DE102012100158A1 (de) * 2011-01-11 2012-07-12 Denso Corporation Stator für drehende elektrische Maschinen und Verfahren zum Herstellen desselben
DE102015205783A1 (de) * 2015-03-31 2016-07-14 Schaeffler Technologies AG & Co. KG Kühlmantelanordnung zur Aufnahme eines Elektromotors, elektrischer Antrieb mit der Kühlmantelanordnung sowie Verfahren zur Fertigung der Kühlmantelanordnung und/oder des elektrischen Antriebs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009072A (en) * 1958-01-28 1961-11-14 Scott L & Electromotors Ltd Fluid cooled motors
DE2712568A1 (de) * 1977-03-22 1978-09-28 Friedrich Schweinfurter Verfahren zur herstellung eines elektromotor-grundbauteils
DE102012100158A1 (de) * 2011-01-11 2012-07-12 Denso Corporation Stator für drehende elektrische Maschinen und Verfahren zum Herstellen desselben
DE102015205783A1 (de) * 2015-03-31 2016-07-14 Schaeffler Technologies AG & Co. KG Kühlmantelanordnung zur Aufnahme eines Elektromotors, elektrischer Antrieb mit der Kühlmantelanordnung sowie Verfahren zur Fertigung der Kühlmantelanordnung und/oder des elektrischen Antriebs

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Publication number Publication date
DE102018100165A1 (de) 2019-07-11

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