EP3769406A1 - Interconnexion de "n" barres omnibus dans un moteur électrique - Google Patents

Interconnexion de "n" barres omnibus dans un moteur électrique

Info

Publication number
EP3769406A1
EP3769406A1 EP19712134.6A EP19712134A EP3769406A1 EP 3769406 A1 EP3769406 A1 EP 3769406A1 EP 19712134 A EP19712134 A EP 19712134A EP 3769406 A1 EP3769406 A1 EP 3769406A1
Authority
EP
European Patent Office
Prior art keywords
busbars
interconnection
windings
plane
busbar
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.)
Pending
Application number
EP19712134.6A
Other languages
German (de)
English (en)
Inventor
Matthias Gramann
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP3769406A1 publication Critical patent/EP3769406A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • 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
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/03—Machines characterised by the wiring boards, i.e. printed circuit boards or similar structures for connecting the winding terminations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations

Definitions

  • the invention relates to an interconnection of cylindrical windings of a
  • Electric motor with four busbars, these busbars as electrical conductor strips for making interconnections between the individual
  • Windings serve.
  • the conductor tracks of sheet metal parts are formed, the staggered radially one behind the other and circumferentially offset from one another in the annular support are used.
  • the sheet metal parts are configured so that the number of sheet metal parts of the same shape is as large as possible.
  • stator having a plurality of stator poles and at least one bus bar for electrically connecting the ends of the windings of different stator poles.
  • the method is characterized in that the busbar is designed in several parts and a plurality of holding parts, on each of which at least one winding wire is fixed, and a connecting part for electrically connecting the holding parts, and that temporally before a winding process, first the holding parts on a
  • Carrier component are arranged and then the winding process takes place, in which at least one winding wire wound on stator teeth and fixed to the holding parts.
  • the busbar is characterized
  • Insulating material and arranged on the support electrical conductor strips for
  • the conductor strips are designed as curved wires, which are preferably inserted in channels formed in the carrier and fixed by means of two annular cover elements made of insulating material.
  • the object of the invention is in a generic device
  • the preferably four bus bars are arranged geometrically in a minimum number of preferably three levels, wherein a plane is defined as a concentric layer relative to the winding and a constant radius follows, with busbars on the same level crossing those busbar on the other level, ie the "unbundling" can take place any number of times in these two levels mentioned here. It can be optimized by this type of arrangement, the dimensions of the busbar areas for interconnecting a winding. A space-optimized solution is therefore the result.
  • Busbar distribution on the said three levels is also an implementation of multi-phase motors, i. more than 3-phase motors, possible.
  • the interconnection can ideally be realized and provided in a virtually space-neutral manner and overall with only minimal extensions of the stator dimensions.
  • four existing bus bars two bus bars lying on one level cross those one bus bar which is on the other level.
  • the plane is located with the one single busbar radially inward than the plane with the two busbars.
  • the fourth bus bar has no influence on the outer and on the inner extension of the radial dimensions and will be described in more detail later.
  • the busbars are distributed over more levels than radially on the opposite side of the winding, for example. Inside of the windings / radially inside the windings. In an external rotor, this may just be
  • Training is advantageous in order to benefit from a better torque can.
  • the necessary crossover of Interconnection provided.
  • the internal components / levels can also be outside or vice versa.
  • Busbars for example, inside, are distributed on less planes than the radial
  • a bridge piece ensures the electrical connection of the busbars located on two different radial planes, wherein the bridge piece in a direction perpendicular to the radial Plane-aligned bridge plane is arranged, then the busbar areas for interconnecting the windings, which influence the axial length of the stator optimized.
  • a minimal, axial extension has the advantage that the drive train can be kept shorter.
  • Bridge pieces exist, which are all arranged in the same bridge level. As a result, assuming the above-mentioned four busbars used, in the axial dimension only one bridging plane is necessary for the four busbars.
  • the interconnection can be down to the a level comprising the fourth busbar, space neutral over the winding head and space realized in total with minimal axial extensions of the stator.
  • the windings are designed as bar wave windings and / or the windings form 3 ⁇ 6 free ends due to the three strands per winding, which are each formed by way of example by way of six wires.
  • the respective three strands are laser welded to the respective ends of the busbars on the end face of the windings, wherein the end faces are slightly shortened axially or - in other words - can be marked accordingly with the same result.
  • the dimension of the stator in the axial direction can remain unaffected.
  • Insulation from each other and / or from each of the other busbars associated windings are electrically isolated.
  • a stator constructed by the windings is widened in the radial direction inwards and outwards by the busbar thickness and the insulation thickness.
  • each busbar isolated from the other busbars and isolated to the windings, which are surrounded by the busbars in radial view are guided in the respective cylinder levels without these mutually disturbing or unintentionally touching.
  • interactions between the bus bars can be prevented.
  • the insulation thickness to be used can be adequately adapted to the prevailing conditions and thus has only a small influence on the enlargement of the radial dimensions.
  • the interconnection has an advantage when the stator is extended in the axial direction by the bridge piece thickness and the insulation thickness. This is a minimal extension of the stator in the axial direction.
  • each busbar isolated from the other busbars or windings are performed as a bridge piece in the bridge level.
  • bus bars of the one plane are designed so that they are arranged closer to the windings than the crossing bus bars of the other plane. In this way, both space and material is saved.
  • the invention also relates to an electric motor with the interconnection according to the preceding aspects, wherein the electric motor shown is a multi-phase, approximately 3-phase motor, but the solution presented is also applicable to other phases.
  • Fig. 1 is a schematic plan view of the interconnection without representation of the windings, which are present in reality between busbar receiving "radial" levels.
  • Fig. 1 shows a schematic plan view of the interconnection 1 of cylindrical
  • the circuit 1 includes four bus bars 2 each connected at one end to a winding located on the radially inner side of the stator and connected at the other end to another coil located on the radially outer side of the stator is.
  • Busbars 2 provided on the same level 3 and the third busbar 2 on the other level 4.
  • the two of the illustrated busbars 2 on the level 3 cross the busbar 2 on the level 4th
  • On the radial inner side of the stator three busbars 2 in a plane 5 (cylinder level itself, not shown) are arranged.
  • the planes 3, 4 and 5 enlarge the stator in the radial direction 6
  • the busbars 2 go over in each case a bridge piece 7.
  • the bridge pieces 7 lie in a common bridge plane.
  • the bridge plane is formed perpendicular to the planes 3, 4 and 5.
  • Each bridge piece 7 connects the inside of the stator in the circumferential direction extending portion of a bus bar 2 with the outside of the stator in the circumferential direction extending portion thereof
  • Busbar 2 The bridge plane extends the stator in the axial direction 8.
  • the fourth bus bar 2 which also connects one end of a winding with another end of another winding.
  • Each busbar 2 has a busbar thickness 9.
  • the bus bar thickness 9 together with a required insulation thickness (not shown) defines the thicknesses of the respective planes 3, 4 and 5 and thus the dimensions of the
  • the thickness of the bridge plane is defined by the bridge rail thickness 10 and the required insulation thickness (not shown).
  • Each winding consists of three strands 11 and each strand 11 comprises six wires (not shown).
  • the windings and the way they are connected together represent a bar shaft winding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

L'invention concerne une interconnexion (1) d'enroulements cylindriques d'un moteur électrique avec « n » barres omnibus (2), destinée à établir des connexions de commutation entre les enroulements individuels, les barres omnibus (2) étant agencées géométriquement dans trois plans (3, 4, 5), un plan (5) étant défini en tant que couche concentrique par rapport à l'enroulement et suivant un rayon constant, des barres omnibus (2) sur le même plan (3) croisant toute barre omnibus (2) sur l'autre plan (4).
EP19712134.6A 2018-03-20 2019-03-05 Interconnexion de "n" barres omnibus dans un moteur électrique Pending EP3769406A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018106461.6A DE102018106461A1 (de) 2018-03-20 2018-03-20 Verschaltung von "n"-Stromschienen in einem Elektromotor
PCT/DE2019/100194 WO2019179558A1 (fr) 2018-03-20 2019-03-05 Interconnexion de « n » barres omnibus dans un moteur électrique

Publications (1)

Publication Number Publication Date
EP3769406A1 true EP3769406A1 (fr) 2021-01-27

Family

ID=65818135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19712134.6A Pending EP3769406A1 (fr) 2018-03-20 2019-03-05 Interconnexion de "n" barres omnibus dans un moteur électrique

Country Status (5)

Country Link
US (1) US20210021170A1 (fr)
EP (1) EP3769406A1 (fr)
CN (1) CN111869055A (fr)
DE (1) DE102018106461A1 (fr)
WO (1) WO2019179558A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757136A1 (de) * 1997-12-20 1999-06-24 Temic Auto Electr Motors Gmbh Bürstenloser, elektrisch kommutierter Motor
DE10261611A1 (de) 2002-12-27 2004-07-08 Robert Bosch Gmbh Verschaltelement für eine Wicklung einer elektrischen Maschine
DE10328720A1 (de) 2003-06-25 2005-01-27 Robert Bosch Gmbh Verschaltungselement für eine Wicklung einer elektrischen Maschine
EP1811634B1 (fr) * 2006-01-24 2012-04-25 Alstom Technology Ltd Réfrigérateur doté d'un dispositif de production de glace
JP4743167B2 (ja) * 2007-05-29 2011-08-10 トヨタ自動車株式会社 回転電機用端末モジュールおよび回転電機
JP4636192B2 (ja) * 2009-03-23 2011-02-23 ダイキン工業株式会社 バスリング、及びその取付構造
DE102010039335A1 (de) * 2010-08-16 2012-02-16 Robert Bosch Gmbh Kontakteinrichtung in einem Stator einer elektrischen Maschine
JP5930801B2 (ja) * 2012-03-30 2016-06-08 日立オートモティブシステムズ株式会社 車載用モータ、及びそれを用いた電動パワーステアリング装置
JP5862970B2 (ja) * 2013-06-25 2016-02-16 株式会社デンソー 回転電機
DE102014201637A1 (de) 2014-01-30 2015-07-30 Ovalo Gmbh Stromschiene für einen Stator, Stator, Elektromotor und Verfahren zum Herstellen eines Stators
CN107078578B (zh) * 2014-09-22 2019-04-30 三菱电机株式会社 旋转电机的定子
DE102016204935A1 (de) * 2016-03-24 2017-09-28 Robert Bosch Gmbh Verschaltungsplatte für einen Stator einer elektrischen Maschine und Verfahren zum Herstellen einer elektrischen Maschine

Also Published As

Publication number Publication date
US20210021170A1 (en) 2021-01-21
CN111869055A (zh) 2020-10-30
WO2019179558A1 (fr) 2019-09-26
DE102018106461A1 (de) 2019-09-26

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