WO2004021548A1 - Empilage de toles pour machine electrique - Google Patents

Empilage de toles pour machine electrique Download PDF

Info

Publication number
WO2004021548A1
WO2004021548A1 PCT/DE2003/000842 DE0300842W WO2004021548A1 WO 2004021548 A1 WO2004021548 A1 WO 2004021548A1 DE 0300842 W DE0300842 W DE 0300842W WO 2004021548 A1 WO2004021548 A1 WO 2004021548A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminated core
sheet metal
electrical machine
sheet
laminates
Prior art date
Application number
PCT/DE2003/000842
Other languages
German (de)
English (en)
Inventor
Heiko Sponar
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 WO2004021548A1 publication Critical patent/WO2004021548A1/fr

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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • 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
    • H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles

Definitions

  • the invention relates to a laminated core for an electrical machine according to the preamble of patent claim 1.
  • the laminated core consists of laminated laminates stacked one above the other with an essentially constant thickness. Due to the constant thickness of the sheet metal laminates, the torque ripple and in particular is
  • the dimensions of the power of the electrical machine in which the laminated core is arranged are also predetermined and cannot be influenced by the manufacture.
  • a laminated core that has pole teeth.
  • sheet metal laminates are provided in which the pole teeth are connected to one another via webs.
  • Sheet metal laminates are also arranged in the laminated core between sheet metal laminates of this type, in which the webs between the pole teeth are interrupted. This creates a lower leakage flux of the magnetic field.
  • the torque ripple and the power can be influenced by the choice of the number of sheet metal laminates with interrupted webs between the pole teeth.
  • the laminated core according to the invention with the characterizing features of claim 1 has the advantage that the mechanical strength of the individual laminated laminates and thus the laminated core is higher. This is achieved in that the width of the webs of the sheet metal laminates is not minimized, but rather that the sheet metal laminates or at least one of the sheet metal laminates has a smaller thickness than the rest of the sheet metal laminate at several or at least one point. This makes it possible to influence the torque ripple of an electrical machine that has such a laminated core in a targeted manner.
  • the location of reduced thickness preferably lies between the planes formed by the two end faces of the sheet metal laminate, as a result of which preferably no sections of the sheet metal laminate protrude. For strength, it is advantageous if the point of reduced thickness is produced by pressing, which results in a smooth transition of the material fibers.
  • the sheet metal laminate is essentially ring-shaped. It is particularly advantageous here if a plurality of locations of smaller thickness, which are evenly distributed on the circumference, are provided, since this is easier to manufacture than locations which are distributed unevenly.
  • the laminated core according to the invention is preferably used for a stator or a rotor.
  • the sheet metal laminate has pole teeth arranged on the circumference.
  • the easiest way to influence the torque ripple is to design the point of reduced thickness between the pole teeth.
  • a preferred development of the invention is also when the pole teeth point outwards and that
  • Laminated core is arranged in a short-circuit ring, since this represents the best structure for strength.
  • the laminated core according to the invention is arranged in an electrical machine.
  • the laminated sheets are punched out of a sheet metal strip with a substantially constant thickness and that at least one point of the at least one laminated sheet is produced with a smaller thickness.
  • This allows a workstation in the Manufacturing process both produce the sheet metal laminate and influence the three-dimensional ripple of the subsequent sheet stack or the subsequent electrical machine.
  • the at least one point of reduced thickness is pressed. This has the advantage that the material fibers are not, or at least hardly, interrupted. It is particularly advantageous if the
  • Sheet laminates can be combined into a sheet package immediately following the above steps.
  • At least one device for punching out the sheet metal laminate from the sheet metal strip and at least one device for producing the at least one point of reduced thickness are provided. Both devices can be provided on one tool.
  • a device for combining the sheet laminates to form the sheet stack is also provided on the device mentioned.
  • FIG. 1 shows an electrical machine in cross section
  • FIG. 2 shows a perspective view of a laminated core according to FIG. 1
  • FIG. 3 shows a detail with a laminated laminate of the laminated core from FIGS
  • Figure 4 shows a device for producing the laminated core.
  • the electrical machine 10 can be an electric motor (commutator motor, electronically commutated direct current motor, alternating current motor, etc.) or a generator or the like. If the electrical machine 10 is used as a motor, it can also be used in a drive device, for example for a window regulator in a motor vehicle.
  • the electrical machine 10 comprises a rotor 12, which is arranged on a shaft 14.
  • the electrical machine 10 comprises a stator 16, which is arranged around the rotor 12 and in turn is fastened in a yoke ring 18.
  • the stator 16 is essentially ring-shaped and has pole teeth 20 which are arranged on the circumference and point outwards.
  • Windings 22 are arranged in a known manner around the pole teeth 20, which run in the axial direction of the electrical machine 10.
  • the windings 22 can be excitation windings.
  • a voltage or a current can be tapped from the windings 22.
  • the ring-shaped structure of the stator 16 results in the pole teeth 20 being connected to one another via webs 24 in the form of ring segments.
  • the webs 24 have an arcuate shape on the inner circumference of the stator 16. Starting from the pole teeth 20, the webs 24 taper until they are in the middle between two pole teeth
  • the laminated core 26 of the stator 16 is shown in FIG.
  • the laminated core 26 consists of individual laminated laminates 28 stacked one above the other.
  • the laminated laminates 28 are connected to one another in a known manner.
  • the laminated core 26 need not be the laminated core of a stator 16. Alternatively, it can also be the laminated core 26 of a rotor of an electrical machine. Only the inside diameter would have to be dimensioned differently in relation to the length of the pole teeth 20.
  • FIG. 2 A section of a sheet metal laminate 28 is shown in FIG. It is clear here that - as can already be seen in FIG. 2 - the sheet metal laminates 28 in the middle of the webs 24 are thinner than in the region of the pole teeth 20.
  • the sheet metal laminates 28 with an essentially constant thickness D are distinguished by the fact that they have points 30 with a smaller thickness d.
  • the laminated core 26, which is constructed essentially in the form of a ring these are preferably a plurality of locations 30 of reduced thickness d that are evenly distributed over the circumference. Since the locations 30 of reduced thickness d are formed between the pole teeth 20 in the present exemplary embodiment this has a very large influence on the torque ripple and possibly also the cogging torque of the electrical machine 10.
  • the locations 30 are preferably produced by pressing. This results in a more homogeneous course of the material fibers.
  • FIG. 4 shows a device 36 for producing the laminated core 26 according to the invention.
  • the sheet metal strip 40 forming the starting material for the sheet metal laminates 28 is unwound from a roll 38.
  • the sheet metal laminates 28 are punched out in a first device 42.
  • the positions 30 are generated in a second device 44.
  • the individual sheet laminates 28 are joined to form a sheet stack 26.
  • the laminated cores 26 are then installed in the electrical machines 10.
  • the first device 42 can also be connected downstream of the second device 44. It is also possible for the first device 42 and the second device 44 to be combined to form a common device.
  • the location 30 on the second device 44 is preferably produced by pressing. Alternatively, it is also possible for the point 30 to be produced by machining. However, pressing is an easier process.
  • the torque ripple of an electrical machine 10 can be influenced in a targeted manner by the laminated core 26 according to the invention or the laminated laminates 28. As can be seen in the figures, this can be accomplished by means of regularly arranged locations 30 which are provided on all sheet metal laminates 28. However, it is also possible to carry out this measure only on a single laminate 28 or a part of the laminates 28 of a laminated core 26. It is even possible to provide this at only one point 30 of a single sheet metal laminate 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un empilage de tôles (26) conçu pour une machine électrique (10). Cet empilage de tôles (26) est constitué de tôles laminées (28) superposées présentant une épaisseur (D) sensiblement constante. De préférence, l'empilage de tôles (26) selon l'invention constitue un stator (16) de machine électrique (10). Cet empilage de tôles (26) présente une configuration annulaire et comporte des dents polaires (20) faisant saillie vers l'extérieur. La matière des tôles laminées (28) située entre ces dents polaires (20) est pressée, ce qui permet d'influer de manière ciblée sur l'ondulation de couple d'une machine électrique (10).
PCT/DE2003/000842 2002-09-12 2003-03-17 Empilage de toles pour machine electrique WO2004021548A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002142404 DE10242404A1 (de) 2002-09-12 2002-09-12 Blechpaket für eine elektrische Maschine
DE10242404.7 2002-09-12

Publications (1)

Publication Number Publication Date
WO2004021548A1 true WO2004021548A1 (fr) 2004-03-11

Family

ID=31895887

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/000842 WO2004021548A1 (fr) 2002-09-12 2003-03-17 Empilage de toles pour machine electrique

Country Status (2)

Country Link
DE (1) DE10242404A1 (fr)
WO (1) WO2004021548A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7264494B2 (en) 2004-12-06 2007-09-04 Weatherford/Lamb, Inc. Electrical connector and socket assemblies
GB2419039B (en) * 2003-06-21 2007-11-21 Weatherford Lamb Electric submersible pumps
US7701106B2 (en) 2003-06-21 2010-04-20 Oilfield Equipment Development Center Limited Electric submersible pumps
US7971650B2 (en) 2003-06-21 2011-07-05 Oilfield Equipment Development Center Limited Electric submersible pumps
US8672641B2 (en) 2003-06-21 2014-03-18 Oilfield Equipment Development Center Limited Electric submersible pumps
EP2026444A3 (fr) * 2007-08-17 2014-06-18 Brose Fahrzeugteile GmbH & Co. KG, Würzburg Machine synchrone et noyau de support pour celle-ci
WO2018178576A1 (fr) * 2017-03-31 2018-10-04 Moving Magnet Technologies Corps statorique divise pour une machine electrique

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005017517B4 (de) * 2005-04-15 2007-03-08 Minebea Co., Ltd. Statoranordnung für eine elektrische Maschine und Verfahren zum Herstellen einer Statoranordnung
DE102007032872A1 (de) * 2007-07-12 2009-01-15 Ipgate Ag Stator für Elektromotor
DE202008017448U1 (de) * 2008-08-15 2009-10-01 Ina Drives & Mechatronics Gmbh & Co. Ohg Aktiveinheit einer elektrischen Maschine
DE102013104392A1 (de) 2013-04-30 2014-10-30 Minebea Co., Ltd. Statoranordnung für eine elektrische Maschine, insbesondere einen bürstenlosen Gleichstrommotor und Verfahren zu deren Herstellung
US20140339947A1 (en) * 2013-05-16 2014-11-20 Lasko Holdings, Inc. Multi-Piece Stator For An Electric Motor
EP3727717A1 (fr) 2017-12-20 2020-10-28 Robert Bosch GmbH Procédé de fabrication d'une lame d'un noyau feuilleté d'une machine électrique
EP3706287A1 (fr) * 2019-03-07 2020-09-09 Siemens Aktiengesellschaft Empilage de tôles d'un stator
DE102021112931A1 (de) 2021-05-19 2022-11-24 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Stator einer elektrischen Maschine, Verfahren zum Herstellen desselben und elektrische Maschine
FR3128595A1 (fr) 2021-10-27 2023-04-28 Moving Magnet Technologies Moteur à acoustique améliorée

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040122B (de) * 1955-06-09 1958-10-02 Licentia Gmbh Staenderblechpaket fuer Wechselstrommotoren
US3257572A (en) * 1959-03-16 1966-06-21 Licentia Gmbh Stators for polyphase small electric motors
JPH10322980A (ja) * 1997-05-15 1998-12-04 Toyota Motor Corp ステータ用積層板の成形方法
DE19842948A1 (de) * 1998-09-18 2000-03-30 Siemens Ag Elektromotor
JP2001346344A (ja) * 2000-06-01 2001-12-14 Tamagawa Seiki Co Ltd ステータ構造
EP1198053A1 (fr) * 2000-05-18 2002-04-17 Mitsui High-tec, Inc. Procede de fabrication de noyaux de fer lamines
JP2002252938A (ja) * 2001-02-26 2002-09-06 Denso Corp 回転電機の電機子コア

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040122B (de) * 1955-06-09 1958-10-02 Licentia Gmbh Staenderblechpaket fuer Wechselstrommotoren
US3257572A (en) * 1959-03-16 1966-06-21 Licentia Gmbh Stators for polyphase small electric motors
JPH10322980A (ja) * 1997-05-15 1998-12-04 Toyota Motor Corp ステータ用積層板の成形方法
DE19842948A1 (de) * 1998-09-18 2000-03-30 Siemens Ag Elektromotor
EP1198053A1 (fr) * 2000-05-18 2002-04-17 Mitsui High-tec, Inc. Procede de fabrication de noyaux de fer lamines
JP2001346344A (ja) * 2000-06-01 2001-12-14 Tamagawa Seiki Co Ltd ステータ構造
JP2002252938A (ja) * 2001-02-26 2002-09-06 Denso Corp 回転電機の電機子コア

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1, no. 2003 14 January 2003 (2003-01-14) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 3 31 March 1999 (1999-03-31) *
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 4 4 August 2002 (2002-08-04) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2419039B (en) * 2003-06-21 2007-11-21 Weatherford Lamb Electric submersible pumps
US7701106B2 (en) 2003-06-21 2010-04-20 Oilfield Equipment Development Center Limited Electric submersible pumps
US7971650B2 (en) 2003-06-21 2011-07-05 Oilfield Equipment Development Center Limited Electric submersible pumps
US8672641B2 (en) 2003-06-21 2014-03-18 Oilfield Equipment Development Center Limited Electric submersible pumps
US7264494B2 (en) 2004-12-06 2007-09-04 Weatherford/Lamb, Inc. Electrical connector and socket assemblies
US7632124B2 (en) 2004-12-06 2009-12-15 Premier Business Solutions, Ltd. Electrical connector and socket assemblies for submersible assembly
US7726997B2 (en) 2004-12-06 2010-06-01 Oilfield Equpiment Development Center Limited Electrical connector and socket assemblies
EP2026444A3 (fr) * 2007-08-17 2014-06-18 Brose Fahrzeugteile GmbH & Co. KG, Würzburg Machine synchrone et noyau de support pour celle-ci
WO2018178576A1 (fr) * 2017-03-31 2018-10-04 Moving Magnet Technologies Corps statorique divise pour une machine electrique
US11264846B2 (en) 2017-03-31 2022-03-01 Moving Magnet Technologies Split stator body for an electric machine

Also Published As

Publication number Publication date
DE10242404A1 (de) 2004-03-25

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