EP1702399A1 - Machine electrique - Google Patents

Machine electrique

Info

Publication number
EP1702399A1
EP1702399A1 EP04789934A EP04789934A EP1702399A1 EP 1702399 A1 EP1702399 A1 EP 1702399A1 EP 04789934 A EP04789934 A EP 04789934A EP 04789934 A EP04789934 A EP 04789934A EP 1702399 A1 EP1702399 A1 EP 1702399A1
Authority
EP
European Patent Office
Prior art keywords
stator
housing
teeth
electrical machine
machine according
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Withdrawn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
EP04789934A
Other languages
German (de)
English (en)
Inventor
Horst Braun
Thomas Berger
Eugen Hellekes
Robert Goldschmidt
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 EP1702399A1 publication Critical patent/EP1702399A1/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Withdrawn legal-status Critical Current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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • 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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air

Definitions

  • An electric machine designed as a three-phase generator for motor vehicles, is known from German published patent application DE 44 25 000 A1. There is described that an air gap can be provided, which is arranged between a peripheral region of a housing part and the laminated core of the stator.
  • the electrical machine according to the invention with the features of the main claim, wherein u.a. it is provided that the flow path on the stand side is delimited by stator outer grooves arranged on the outer circumference of the stator, has the advantage that the cooling surface of the stator is thereby significantly enlarged and the stator can thus be better cooled on its outer surface.
  • stator is held in the housing via its outer teeth, the housing resting on an axial end face of the stator outer teeth and the stator outer teeth by one R. 307454
  • Housing opening are included appropriately. This measure additionally improves the heat transfer from the stator iron via its stator outer teeth to the housing, since the stator outer teeth are at least partially in contact with the housing in the housing opening.
  • a further improvement of the invention results from the fact that a housing part adjacent to the stator, for example a bearing plate, has a toothed or grooved end face, with housing grooves facing the stator outer grooves.
  • This measure improves flow guidance in the transition region d. H. at the interface between the stand and the end shield, as additional channels or flow possibilities are opened by the toothed or grooved end face, and the flow resistance in this area thus decreases further.
  • The. Volume flow for the coolant can thus be increased further, the temperature of the stator drops as a result.
  • the housing grooves run in an annular region of the housing part and also end in this.
  • the design for example with regard to the length of these housing grooves, also influences the stability of the ring area with regard to the vibration properties and thus the sensitivity to breakage. Without the ends of the housing grooves in the ring area, the housing part would be weakened too much. It is envisaged that the housing grooves end with a slope. This has the advantage that the effective flow cross section is particularly large in the transition from the area outside the end windings of the stator iron or stator to the housing part. The flow can be guided better. In addition, the risk of contamination and thus clogging of these openings is reduced.
  • Housing teeth is larger than an inner diameter of the stator outer grooves. This has the advantage that, directly in the plane in which the stand rests on the housing part, the blocking of the flow path through the housing teeth is particularly small. This means that the flow resistance in this flow path is reduced, and thus the coolant throughput with the known consequences is also improved.
  • the continuous ring area extends at least 20% up to about 70% over the stand in relation to its entire axial length.
  • the continuous ring area thus covers the stand or its stand external teeth over a certain length. This causes the
  • Cooling air can flow over the surface of the stator outer teeth for a longer period of time and the cooling effect for the stator or the stator iron is thus improved.
  • the housing teeth are wider in the circumferential direction than the stator outer teeth.
  • the outer teeth of the stator are covered in a first approximation over a radial length of 40% to 70% by housing teeth. In a second approximation, it is provided that this coverage is between 50% to 64%>.
  • FIG. 1 shows a cross section through an electrical machine in the form of a three-phase generator
  • FIG. 2 shows a partial cross section of a transition point between stator iron and housing in a first exemplary embodiment
  • FIG. 2a shows a partial cross section of a transition point between stator iron and housing in a second exemplary embodiment
  • FIG. 3 is a partial view of a stand iron
  • FIG. 4 shows a detail of a view in the axial direction of the stator iron in the direction of a housing part
  • FIG. 5 shows a spatial view of an inside of a housing part
  • Figure 6 is a partial view showing certain proportions in the transition from stator iron to the housing part.
  • FIG. 1 shows a cross section through an electrical machine 10, here in the embodiment as a generator or three-phase generator for motor vehicles.
  • This electrical machine 10 has i.a. a two-part housing 13, which consists of a first bearing plate 13.1 and a second bearing plate 13.2.
  • the bearing plate 13.1 and the bearing plate 13.2 accommodate a so-called stator 16 which, on the one hand, consists of an essentially circular stator iron 17 and in which a stator winding 18 is inserted in the radially inward, axially extending slots. With its radially inwardly directed grooved surface, this annular stator 16 surrounds a rotor 20 which is designed as a claw pole rotor.
  • the rotor 20 includes from two claw pole plates 22 and 23, on the outer circumference of which claw pole fingers 24 and 25 are arranged, each extending in the axial direction. Both claw pole plates 22 and 23 are arranged in the rotor 20 such that their claw pole fingers 24 and 25, which extend in the axial direction, alternate with one another on the circumference of the rotor 20. This results in magnetically required spaces between the oppositely magnetized claw pole fingers 24 and 25, which as
  • the rotor 20 is rotatably supported in the respective end shields 13.1 and 13.2 by means of a shaft 27 and a roller bearing 28 located on each rotor side.
  • the rotor 20 has a total of two axial end faces, to each of which a fan 30 is attached.
  • This fan 30 essentially consists of a plate-shaped or disk-shaped section from which fan blades originate in a known manner. These fans 30 serve to enable an air exchange between the outside of the electrical machine 10 and the interior of the electrical machine 10 via openings 40 in the end shields 13.1 and 13.2. For this purpose, the openings 40 in
  • cooling air After passing through the winding overhang 45 or after flowing around this winding overhang 45, cooling air takes a path radially outward through openings not shown here in FIG. 1. Furthermore, the cooling air takes a path in the joint between the bearing plate 13.1 and the stand iron 17 or in the joint between the stator iron 17 and the bearing plate 13.2. On the closer
  • FIG. 2 shows the transition from the housing 13 or housing part 13.1 to the stator 16 or stator iron 17.
  • the housing 13 or housing part 13.1 has an annular region 50 which is connected via ribs 51 in the axial or radial direction to a plate-shaped section 52 of the housing part is.
  • the housing part 13.1 thus has an essentially cup-shaped shape.
  • openings 54 which serve to allow the cooling air which has passed through the winding overhang 45 to reach the outside.
  • the ring area 50 serves to receive the stator 16.
  • the stator 16 is held in the housing or housing part 13.1 in such a way that the stator 16 rests with one of its axial end faces 57 on an axial contact surface in the housing part 13.1 or ring region 50.
  • One stator outer groove 64 also extends in the axial direction between two adjacent stator outer teeth 62. The stator 16 thus lies with an axial end face or the individual axial end faces 57 of its outer teeth 62 on an axial end face 58 of the ring region 50.
  • the inside diameter of the ring area 50 is chosen such that after the assembly or fitting of the stator 16 into the housing part 13.1, openings remain free in the joint between these two components, which flow through from the area of the winding head 45 to the outer circumference of the stator 16 in enable the joint between ring area 50 and stator 16.
  • the flow path is limited by the stator outer grooves 64 arranged on the outer circumference of the stator or stator 16.
  • stator 16 is held in the housing 13 such that a coolant flow can flow around the stator 16 from one of its axial end faces 57 to a peripheral region of the stator 16.
  • the flow cross-section of the flow path is limited by the stator 16 and the housing 13, the stator 16 being particularly configured here in that the flow path is limited on the stand side by stator outer teeth 62 arranged on the outer circumference of the stator 16.
  • stator outer teeth 62 are suitably received by a housing opening. To improve, i.e. to enlarge the stator outer teeth 62
  • a housing part adjacent to the stator 16 in this case the housing part 13.1, has a toothed or grooved end face 58, with housing grooves axially extending the stator outer grooves 54 Facing direction.
  • FIG. 4 shows a detail of an axial view of the joint between the housing part 13.1 and the stator 16.
  • the stator outer teeth 62 and the stator outer grooves 64 arranged therebetween can be clearly seen.
  • the ring region 50 is toothed or stuck at the location receiving the stator 16 grooved.
  • the ring area 50 of the housing part 13.1 is thus serrated or grooved on the side facing the stator 16 over its inner circumference and thus externally resembles a so-called hollow gearwheel in this area.
  • the housing grooves 70 face the stator outer grooves 64 or, in other words, that the housing teeth 71 face the stator outer teeth 62.
  • FIG. 5 shows a detail of a spatial view of the interior of the housing part 13.1.
  • the ring area 50 is roughly specified and runs from R. 307454
  • housing grooves 70 or housing teeth 71 can be clearly seen in this view. These housing grooves 70 can already be seen in FIG. The bevel 73 with which the housing grooves 70 end is also shown there. The housing grooves 70 run in the ring area 50 of the
  • FIG. 6 shows a simplified representation of the opposing housing teeth 71 or stator outer teeth 62, in the plane of the axial end face 58 or 57.
  • An inner diameter DJ of the stator outer grooves 64 is defined as the diameter of the groove base of the stator outer grooves 64.
  • the inside diameter DJZ of the housing teeth 71 is the smallest diameter described by the housing teeth 71. It is provided • in that on the one hand the housing slots 70 alternating with teeth 71 housing an inner diameter DJZ, the housing teeth 71 is greater than an inner diameter D of the stator slots JN 64th
  • the housing teeth 71 should be wider in the circumferential direction than the stator outer teeth 62.
  • stator outer teeth 62 are covered in a first approximation over a radial length of 40%> to 70% by housing teeth 71 or the axial end face 58. In a second approximation, the coverage is between 50% and 64%.
  • stator iron 17 extends in relation to its entire axial length by at least one third to approximately half of it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La présente invention concerne une machine électrique, en particulier un générateur de courant triphasé, destinée à des véhicules automobiles, ladite machine électrique présentant un boîtier (13) dans lequel est maintenu un stator (16), le stator (16) étant maintenu dans le boîtier (13) de sorte que le stator (16) peut être contourné par un courant d'agent de refroidissement, sur l'un de ses côtés frontaux axiaux (57) pour atteindre la zone périphérique du stator (16), la section de la trajectoire de courant étant délimitée par le stator (16) et le boîtier (13). La trajectoire du courant est délimitée côté stator par des dents extérieures de stator (62) disposées contre la périphérie extérieure du stator (16).
EP04789934A 2003-12-30 2004-10-07 Machine electrique Withdrawn EP1702399A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10361864A DE10361864A1 (de) 2003-12-30 2003-12-30 Elektrische Maschine
PCT/DE2004/002223 WO2005064772A1 (fr) 2003-12-30 2004-10-07 Machine electrique

Publications (1)

Publication Number Publication Date
EP1702399A1 true EP1702399A1 (fr) 2006-09-20

Family

ID=34706729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04789934A Withdrawn EP1702399A1 (fr) 2003-12-30 2004-10-07 Machine electrique

Country Status (6)

Country Link
US (1) US7518271B2 (fr)
EP (1) EP1702399A1 (fr)
JP (1) JP2007517485A (fr)
CN (1) CN1902805A (fr)
DE (1) DE10361864A1 (fr)
WO (1) WO2005064772A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2486652C2 (ru) * 2007-08-07 2013-06-27 Спал Аутомотиве С.Р.Л. Электрическая машина

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Publication number Priority date Publication date Assignee Title
DE10361864A1 (de) * 2003-12-30 2005-07-28 Robert Bosch Gmbh Elektrische Maschine
DE10361857A1 (de) * 2003-12-30 2005-07-28 Robert Bosch Gmbh Verfahren zur Herstellung eines Ständers sowie danach hergestellter Ständer
JP4483845B2 (ja) 2006-09-12 2010-06-16 株式会社デンソー 車両用交流発電機
US8097994B2 (en) * 2007-08-30 2012-01-17 Mitsubishi Electric Corporation Cooling structure for a vehicle AC generator
JP5240495B2 (ja) * 2007-10-31 2013-07-17 アイシン精機株式会社 モータ
US20110025144A1 (en) * 2009-07-28 2011-02-03 Caterpillar, Inc. Cooling housing for a switched reluctance electric device
JP2011147225A (ja) * 2010-01-13 2011-07-28 Yaskawa Electric Corp 回転電機
US8446056B2 (en) * 2010-09-29 2013-05-21 Remy Technologies, Llc Electric machine cooling system and method
JP5572508B2 (ja) * 2010-09-30 2014-08-13 日立オートモティブシステムズ株式会社 回転電機
CN102290908B (zh) * 2011-08-16 2013-05-15 联合汽车电子有限公司 电动汽车电机的水冷外壳及内水套、卡爪
CN102437659A (zh) * 2011-12-23 2012-05-02 芜湖博耐尔汽车电气系统有限公司 电动压缩机定子结构
US9444308B2 (en) * 2011-12-29 2016-09-13 Ta Instruments-Waters L.L.C. Linear motor cooling system
DE102012209589A1 (de) * 2012-06-06 2013-12-12 Robert Bosch Gmbh Stator für eine elektrische Maschine und Baugruppe, die den Stator umfasst
US9362785B2 (en) * 2012-11-06 2016-06-07 Lcdrives Corp. Concentrated winding stator construction for high efficiency machine
DE102014206845A1 (de) * 2014-04-09 2015-10-15 Zf Friedrichshafen Ag Stator für eine elektrische Maschine und elektrische Maschine
DE102014219724A1 (de) 2014-09-29 2016-03-31 Robert Bosch Gmbh Elektrische Maschine mit Kühlung
DE102016226208A1 (de) 2016-12-23 2018-06-28 Robert Bosch Gmbh Verfahren zur Montage einer Maschine an einem Halteblock
DE102016226207A1 (de) 2016-12-23 2018-06-28 Robert Bosch Gmbh Maschine mit einem Haltearm
DE102016226209A1 (de) 2016-12-23 2018-06-28 Robert Bosch Gmbh Maschine mit einem Haltearm
JP6523372B2 (ja) * 2017-06-01 2019-05-29 ファナック株式会社 ステータと一体化されたハウジングを備えた電動機
JP7167849B2 (ja) * 2019-05-21 2022-11-09 株式会社デンソー ステータアセンブリ、及び、モータ
JP7226088B2 (ja) * 2019-05-21 2023-02-21 株式会社デンソー ステータアセンブリ、及び、モータ
FR3104338B1 (fr) * 2019-12-09 2023-12-08 Valeo Equip Electr Moteur Flasque pour machine électrique tournante
FR3118352B1 (fr) * 2020-12-18 2024-03-29 Valeo Equip Electr Moteur Flasque pour une machine électrique tournante

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RU2486652C2 (ru) * 2007-08-07 2013-06-27 Спал Аутомотиве С.Р.Л. Электрическая машина

Also Published As

Publication number Publication date
JP2007517485A (ja) 2007-06-28
DE10361864A1 (de) 2005-07-28
US7518271B2 (en) 2009-04-14
WO2005064772A1 (fr) 2005-07-14
CN1902805A (zh) 2007-01-24
US20070063593A1 (en) 2007-03-22

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