EP1262009A1 - Empilement de lamelles de tole - Google Patents

Empilement de lamelles de tole

Info

Publication number
EP1262009A1
EP1262009A1 EP01962662A EP01962662A EP1262009A1 EP 1262009 A1 EP1262009 A1 EP 1262009A1 EP 01962662 A EP01962662 A EP 01962662A EP 01962662 A EP01962662 A EP 01962662A EP 1262009 A1 EP1262009 A1 EP 1262009A1
Authority
EP
European Patent Office
Prior art keywords
sheet
sheet metal
layer
plate
heat
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Withdrawn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
EP01962662A
Other languages
German (de)
English (en)
Inventor
Kurt Reutlinger
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 EP1262009A1 publication Critical patent/EP1262009A1/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Withdrawn legal-status Critical Current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
    • H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/223—Heat bridges
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/227—Heat sinks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]

Definitions

  • the invention relates to a sheet-metal laminate package, in particular for electrical machines and devices.
  • cooling systems are known for cooling electrical machines, which are used depending on the application.
  • an open design is often chosen for cooling. Due to the open design, an air flow can be led through the machine past the active parts, which represent the heat sources of the machine.
  • the heat sources are usually the windings in which the greatest losses occur.
  • the cooling air flow enters the machine and flows directly past the windings and the laminated core and absorbs the heat. When exiting the machine, the cooling air sticks with the heat and senses it from the surroundings.
  • the cooling air stiOm can be fanned by natural convention or by a fan.
  • the machine is of a closed design, it is not possible to guide the cooling air past the active components through the machine. With these machines. the heat of the windings is dissipated to the housing via the stator.
  • an internal cooling circuit is also provided, in which gas for cooling circulates. Internal cooling circuits are complex to manufacture.
  • the invention is based on the object of creating a sheet-metal laminate package for an electrical machine, so that the cooling of the machine is improved.
  • the object is solved by the features of claim 1.
  • the essence of the invention is to provide heat-conducting layers between the sheet-metal fins of a sheet-metal-disk pack, the thermal conductivity of which is greater than the thermal conductivity of the sheet-metal fins.
  • FIG. 1 is a plan view of a sheet-metal laminate package of a machine stand according to a first embodiment
  • FIG. 2 shows a cross-sectional illustration of the laminated laminated core according to FIG. 1,
  • Fig. 3 is a cross-sectional view along the section line 111-111 in Fig. 1 and
  • Fig. 4 is a cross-sectional view of a laminated laminated core according to a second embodiment.
  • laminated laminations 1 are used, which are partially wrapped by winding wire.
  • the winding wire through which current flows creates magnetic fields that are partially or completely felt in the sheet-plate package 1.
  • a typical sheet-metal plate pack 1 is shown. This is the stationary machine stand of an electric motor.
  • the individual sheet metal lamellae 2 are designed in the form of annular disks and have grooves 3 which extend radially outwards and are distributed over the circumference and are arranged congruently with respect to the various sheet metal lamellae 2.
  • the slots 3 receive the winding wire, which is felt at the two ends 4 and 5 at the two ends, from one slot 3 into the next.
  • the individual sheet metal lamellae 2 consist of steel sheets which are alloyed with silicon to reduce the specific losses.
  • the specific thermal conductivity of the sheet metal fins 2, which are also referred to as dynamo sheets, is typically in the range from 20 to 30 W / km.
  • the sheet metal lamellae 2, which lie flat on top of one another and are connected to one another, for example by gluing, are insulated from one another, which is often achieved by requesting a lacquer layer.
  • a heat-conducting plate 6 designed as a heat-conducting layer is arranged at regular intervals between the sheet-metal fins 2. The plate 6 is arranged flat between the sheet-metal fins 2 and in direct contact with them.
  • the plate 6 consists of a material that has a greater thermal conductivity than the material of the sheet metal lamellae 2.
  • a particularly suitable material for this is aluminum.
  • Aluminum has a very good thermal conductivity of 230 W / km.
  • other materials with high thermal conductivity can also be used, such as copper, silver and gold.
  • five sheet metal lamellae 2 are separated from a plate 6. The spacing of the plates 6 from one another is determined as a function of the desired thermal conductivity of the laminated laminated core 1 and the magnetic fields to be guided therein. chooses.
  • the theoretical conductivity of the sheet-lamella package 1 is doubled in comparison to a sheet-lamella package which consists only of sheet metal lamellae 2 exists.
  • the plates 6, which consist of ⁇ non-magnetic material, reduce the iron fill factor, ie the proportion of magnetic iron in a sheet-metal plate pack 1 per unit volume.
  • the good electrical conductivity of the plates 6 does not increase the eddy strength of the corresponding electrical machine, since the magnetic flux is not felt in the aluminum, but in parallel in the dynamo plate. If a magnetic flux occurs in the axial direction and thereby cause eddy currents in the plate 6, then radial slots can follow in the plate 6.
  • kind of a comb can be provided to reduce the loss of vertebrae. This is particularly important in the case of the plates 6 arranged at the ends 4 and 5, since axial field components can also occur there under the winding heads as a result of the winding heads being flooded.
  • cover plates 7 designed as heat-conducting layers are provided, which are thicker than the laminated panels 6. Often, in the case of a laminated laminated core 1, it is sufficient to increase the thermal conductivity. that has no plates 6, only to provide cover plates 7 at both ends 4 and 5.
  • the cover plates 7 can have rounded corners 8 between the grooves 3, so that the winding wire can be guided around to the cover plate 7 without damage and at the same time with great contact and thus great heat transfer. It is also possible to provide edges 9 which spring back relative to the grooves 3 in order to simplify the wrapping of the cover plate 7 by winding wire.
  • the dik- keren cover plates 7 at the same time increase the stability of the laminated plate package 1.
  • the heat is removed from the loss locations to the heat sink by heat conduction.
  • the heat sink can e.g. be formed by a housing with water cooling.
  • the heat therefore flows from the windings over the insulation layers of the winding wires into the laminated laminated core, which often have tooth-shaped projections.
  • the heat then flows from these teeth through the stator yoke into the housing, where it is removed by the coolant. Teeth are a bottleneck when it comes to heat conduction. A large proportion of the heat lost is transported through the teeth. With the sheet metal slats.
  • Packages 1 the overall thermal conductivity of package 1 is greatly increased, so that the heat from package 1 and in particular from the teeth can be better dissipated to the stator yoke and to the housing. This results in a good thermal connection of the windings to the housing. In this way, either the temperature level in the machine can be reduced and the service life and efficiency can be improved. However, the performance of the machine can also be increased until the temperature level of the starting machine is reached with a sheet and plate package without a heat-conducting layer.
  • the heat-conducting layer is designed as a heat-conducting layer 10, which is provided on part or on each sheet-metal lamella 2.
  • the heat-conducting layer 10 can be produced by gluing, vapor deposition, rolling or electrolytic deposition, in particular of aluminum, on a sheet metal lamella 2.
  • an anodized aluminum oxide layer can be applied to the Wäimeleit layer 10. This has the advantage that sheet metal fins 2 which are not insulated per se can be used.
  • Sheet metal fins 2 with improved thermal conductivity and one-sided insulation can thus be produced in one.
  • the sheet metal fins 2 and the thermal insulation layers 10 are in direct physical contact with one another, i.e. there is no air gap between the layers 10 and the slats 2.
  • the layers 10 can of course also be arranged between the sheet metal lamellae 2 without being directly connected to a sheet metal lamellae 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne un empilement de lamelles de tôle, notamment pour des machines et des appareils électriques. L'empilement selon l'invention comprend plusieurs lamelles de tôle (2) placées à plat les unes au-dessus des autres et au moins une couche thermoconductrice placée à plat contre une lamelle de tôle (2), la conductibilité thermique de la couche thermoconductrice étant supérieure à celle de la lamelle de tôle (2).
EP01962662A 2000-10-17 2001-08-18 Empilement de lamelles de tole Withdrawn EP1262009A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10051499A DE10051499A1 (de) 2000-10-17 2000-10-17 Blech-Lamellen-Paket
DE10051499 2000-10-17
PCT/DE2001/003169 WO2002033808A1 (fr) 2000-10-17 2001-08-18 Empilement de lamelles de tole

Publications (1)

Publication Number Publication Date
EP1262009A1 true EP1262009A1 (fr) 2002-12-04

Family

ID=7660125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01962662A Withdrawn EP1262009A1 (fr) 2000-10-17 2001-08-18 Empilement de lamelles de tole

Country Status (6)

Country Link
US (1) US20030077476A1 (fr)
EP (1) EP1262009A1 (fr)
JP (1) JP2004512792A (fr)
DE (1) DE10051499A1 (fr)
MX (1) MXPA02006010A (fr)
WO (1) WO2002033808A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10314886A1 (de) * 2003-04-01 2004-11-11 Robert Bosch Gmbh Bremseinrichtung für einen Elektromotor
EP2045896B1 (fr) * 2006-07-26 2019-09-04 Mitsubishi Electric Corporation Machine dynamo-electrique
EP2375545B1 (fr) 2010-04-06 2013-02-20 Converteam Technology Ltd Machines électriques
DE102014004613B4 (de) * 2014-03-29 2017-11-30 Groschopp Ag Drives & More Elektromotor
EP3402039A1 (fr) * 2017-05-10 2018-11-14 Siemens Aktiengesellschaft Isolation d'une machine électrique
DE102019120944B4 (de) * 2019-08-02 2025-01-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Stator für eine elektrische Maschine mit verbesserter Kühlung, elektrische Maschine und Kraftfahrzeug
EP3979465A1 (fr) * 2020-09-30 2022-04-06 Siemens Aktiengesellschaft Machine électrique et installation
DE102023203142A1 (de) * 2023-04-05 2024-10-10 Zf Friedrichshafen Ag Isolation einer elektrischen Maschine
DE102024123636A1 (de) * 2024-08-19 2026-02-19 DeepDrive GmbH Stator für eine Radialfluss-Doppelrotormaschine, Verfahren zur Herstellung eines Stators für eine Radialfluss-Doppelrotormaschine, Radialfluss-Doppelrotormaschine und Verfahren zur Herstellung einer Radialfluss-Doppelrotormaschine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1877569A (en) * 1930-02-19 1932-09-13 Radio Patents Corp Electromagnetic apparatus
US3710574A (en) * 1969-07-22 1973-01-16 R Pearson Fluid distribution and injection systems
US4103195A (en) * 1976-08-11 1978-07-25 General Electric Company Bonded laminations forming a stator core
US5091666A (en) * 1990-06-15 1992-02-25 General Electric Company Stator cooling system for electrical machinery
US5600238A (en) * 1994-07-05 1997-02-04 Ford Motor Company Method and apparatus for detecting the linear or rotary position of an object through the use of a variable magnetic shunt disposed in parallel with a yoke air gap
DE29514476U1 (de) * 1995-02-23 1995-11-23 VEM-Elektroantriebe GmbH, 01259 Dresden Anordnung zur Erhöhung der Wärmeleitung in Blechpaketen umlaufender elektrischer Maschinen
JPH09312361A (ja) * 1996-05-22 1997-12-02 Hitachi Metals Ltd 電子部品用複合材料およびその製造方法
US5703421A (en) * 1996-05-24 1997-12-30 The United States Of America As Represented By The Secretary Of The Air Force Reluctance generator/motor cooling
DE29721266U1 (de) * 1997-04-30 1998-02-12 Siemens AG, 80333 München Beschichtung für Blechelemente von elektrischen Maschinen, insbesondere Statorbleche von Hochspannungsmaschinen
US6121709A (en) * 1997-10-16 2000-09-19 Alliedsignal Inc. Rotor assembly having bonded lamination stack
US6159305A (en) * 1998-07-14 2000-12-12 General Electric Company High speed induction motor rotor and method of fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0233808A1 *

Also Published As

Publication number Publication date
DE10051499A1 (de) 2002-04-25
US20030077476A1 (en) 2003-04-24
JP2004512792A (ja) 2004-04-22
WO2002033808A1 (fr) 2002-04-25
MXPA02006010A (es) 2003-01-28

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