EP3921925A1 - Stator pour machine électrique - Google Patents

Stator pour machine électrique

Info

Publication number
EP3921925A1
EP3921925A1 EP20703375.4A EP20703375A EP3921925A1 EP 3921925 A1 EP3921925 A1 EP 3921925A1 EP 20703375 A EP20703375 A EP 20703375A EP 3921925 A1 EP3921925 A1 EP 3921925A1
Authority
EP
European Patent Office
Prior art keywords
winding
radially
conductors
stator
axially
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
EP20703375.4A
Other languages
German (de)
English (en)
Inventor
Andreas Bexel
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 EP3921925A1 publication Critical patent/EP3921925A1/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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0414—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils
    • H02K15/0421—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils consisting of single conductors, e.g. hairpins
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Definitions

  • the invention relates to a stator for an electrical machine, with a winding comprising a plurality of conductors assigned to one or more phases, which are interconnected.
  • Electric machines comprising a rotor and a stator are used in different areas of application.
  • the use of electric machines for electric hybrid vehicles and electric vehicles or for hub drives is only mentioned as an example. If such an electrical machine is used as a drive machine, it is mostly designed as an internal rotor, which means that the stator surrounds the internal rotor. A wandering magnetic field is generated via the stator, which causes the rotor to rotate.
  • the stator has a winding consisting of a large number of conductors, the conductors being assigned to one or usually several phases.
  • the conductors are formed by means of rods bent in a U-shape, which are plugged together to form a winding cage. The conductors are laid on a plurality of radial levels, with the conductors moving from level to level.
  • circumferential conductors To form quasi-meandering, circumferential conductors, they are to be connected accordingly at their ends, which is usually done by welding the conductor ends that are adjacent to one another.
  • the conductor ends converge at one point or on one winding side in the form of the so-called star, where they are connected to one another.
  • the connection of the individual phases to an external power supply Supply that is used to generate the magnetic field to make, which is often very difficult to implement for reasons of space.
  • the invention is therefore based on the problem of specifying a stator as compact as possible.
  • a stator of the type mentioned inven tion provided that the ends of at least part of the conductor on the inner circumference and / or on the outer circumference of the winding protrude axially or radially over the winding, with a connection ring axially or radially on the Winding is set to which the conductors are connected, and the ends of at least two conductors associated with a phase protrude radially or axially outward and are connected to a power connection located radially outside the winding.
  • connection ring is used, that is to say a conductor ring which is placed separately on the winding and which, according to the invention, is placed axially or radially on the winding.
  • This interconnection ring engages in the area of the inner circumference and / or the outer circumference of the winding axially or radially protruding Leinicden, when placed axially, for example, radially between in the area of the inner and outer circumference of the winding axially protruding conductor ends over the winding.
  • the conductor ends are assigned to the individual conductor sections, unless they are connected to one another on other, for example further inward, radial planes.
  • the conductor ends are connected to the interconnection ring, usually welded to it accordingly, so that the corresponding phase-specific conductor structures or conductor connections are generated via the interconnection ring.
  • corresponding conductor ends that are assigned to a phase are guided protruding radially or axially outward.
  • a power connection arranged radially next to the winding head can now be connected accordingly with these radially or axially outwardly directed conductor ends, so that the HV power connection and the individual phase-related terminals can, of course, also be welded to the corresponding phase-specific conductor ends .
  • connection ring and the power supply terminal Due to the quasi-nested, e.g. The axial and radial arrangement of the connection ring and the power supply terminal results in a very compact, space-saving design.
  • the assembly is also simplified, since the conductors or wires to be connected via the interconnection ring only have to be cut to length and brought into the appropriate position when the winding cage is plugged together in order to be connected to the corresponding connection terminals of the interconnection ring, which of course are positioned accordingly . Both cutting to length and, of course, assembling can take place in an automated assembly process, as can of course also be compensated for due to the simple connection of conductor ends and interconnection ring. This is not least due to the fact that the connection ring and the power supply or the HV terminal are two separate assemblies that are connected in different process steps to the stator and then also to the finished electrical machine.
  • the interconnection ring expediently has several separate cable bridges to which the ends of the conductors are connected.
  • These cable bridges which are correspondingly stable metal sheets, which are geometrically shaped so that they reach the corresponding conductor ends to be connected, are grouped into the corresponding circuit ring and enable simple bridging of corresponding distances both in the circumferential and in the radial direction tion.
  • These cable bridges like the individual conductors, are of course insulated from one another.
  • the line bridges expediently have radially or axially protruding connection sections on which the ends of the conductors, which protrude axially or radially from the winding, come to lie next to the connection sections in the assembly position, be welded on.
  • the interconnection ring is consequently designed as a star distributor, comprising the corresponding line bridges and the associated, radially or axially protruding connection sections.
  • the bridges themselves are arranged radially and axially offset from one another and are nested as closely as possible, although the winding geometry must of course always be taken into account when designing the individual line bridges, which includes the position of the conductor ends to be connected Defined inside and outside perimeter.
  • the interconnection ring expediently has a housing in which the bridges are arranged, the preferably radially closed housing having corresponding lateral openings through which the connection sections protrude.
  • the connection ring is therefore designed as a fully assembled unit and as such can be placed axially or radially on the winding head and in relation to the conductor ends, e.g. placed between the protruding ends of the conductor. With the insertion, the corresponding connection sections are also positioned exactly with respect to the conductor ends that are to be connected to them, so that then only the welding has to take place.
  • the power connection or the connections of the HV terminal are arranged radially outside of the stator or the stator head.
  • the two or more conductor ends belonging to a phase, which are to be connected to the HV terminal are guided radially or axially outwards, that is to say bent outwards in a simple manner in the case of a radial arrangement, for example. This is easily possible with Leinicden on the outer circumference of the winding, since they are located radially outside of the interconnection ring.
  • the ends are preferably led radially over the connection ring, i.e. the connection ring is first inserted and connected during assembly. after which only the conductor ends on the inner circumference, if any are provided there, are bent radially outward so that they overlap the interconnection ring.
  • the power connection itself expediently has corresponding busbars, which are preferably also accommodated in a housing which is arranged radially laterally next to the stator or the winding head and from which the corresponding connection ends of the busbars protrude.
  • the line ends preferably overlap the busbars, so that simple welding can also take place here due to the overlap.
  • the invention also relates to an electrical machine to summarize a stator of the type described.
  • FIG. 1 shows a basic illustration in the form of a partial view of a stator according to the invention
  • Figure 2 is a partial view of the interconnection ring
  • FIG. 3 shows a schematic diagram of various line bridges of the connection ring from FIG. 2, and
  • Figure 4 is a partial view of the power connection.
  • FIG. 1 shows, in the form of a partial view, a basic illustration of a stator 1 according to the invention of an electrical machine, with a winding 2 comprising a plurality of conductors 3, which are assigned to three separate phases in the example shown.
  • Each conductor 3 is practically designed as a U-shaped bracket, with a plurality of such U-shaped conductors, often also called hairpins, to the winding 2, which is also called Winding basket can be referred to, are plugged together.
  • the plurality of conductors 3 define different radial planes R, as shown in FIG.
  • the conductors 3 stretch depending on the winding scheme from one radial plane to another radial plane, for example an adjacent radial plane, in the area in which they are connected to the conductor ends of the corresponding neighboring conductors leading to the phase.
  • the conductors are guided or bent and laid in such a way that corresponding recesses 4 result, which extend radially so that corresponding
  • Stator teeth 5 engage in these recesses 4 or the corresponding conductors are wound between the corresponding grooves of the stator teeth 5.
  • the basic structure of such a stator or a winding 2 wound from the separate brackets described is basically known.
  • These ends are associated with individual conductors, which in turn are assigned under different phases, which is why the conductor ends must be connected according to the routing diagram of the conductor 3.
  • a connection ring 7 is used, which is placed axially on the end face of the winding 2 and is arranged between the conductor ends 6 or engages between them.
  • the interconnection ring 7 comprises, as will be discussed below, a plurality of corresponding power bridges and connection sections 8 which protrude to the side from the housing 9 of the interconnection ring 7 and after inserting the interconnection ring 7 between the conductor ends 6 in the exact position next to the corresponding one Conductor end 6 are positioned with which they are to be connected.
  • the connection is made by simple welding, so that all conductors 3 are correctly and phase-specifically connected to one another when they are connected.
  • a power supply 14 is also provided, which is arranged radially next to the winding 2 in the area of its axial end.
  • This power supply 14, also called HV terminal, comprises a housing 10 in which the corresponding busbar NEN 11 are arranged, which ra gene with their connection terminals 12 from the housing.
  • connection terminals 12 are also provided in the example shown.
  • connection terminal 12 is to be connected to one phase of the winding 2. This is implemented in a simple manner in that two conductor ends 6a per phase are guided or bent radially outwards, as FIG. 1 clearly shows.
  • the at the arranged on the outer circumference of the winding 2 conductor ends 6a are relatively short and can be bent directly outwards, while the two conductor ends 6a arranged on the réelleum are longer and the interconnection ring 7 overgoes. They run above the connection terminals 12, so that a simple welded connection for contacting is possible there as well.
  • the connection to the power supply 14 takes place only when the conductors 3 are interconnected via the interconnection ring 7 with one another.
  • FIG. 2 shows a partial view of the interconnection ring 7 from FIG. 1.
  • the housing 9 is shown, which is accordingly in several parts and also enables radial encapsulation. It can be seen that the corresponding connection sections 8, which are assigned to different phases, protrude from the housing 9 through corresponding openings. As already described, the individual connection sections are assigned to different phases, that is to say connect different conductor ends 6.
  • connection section 8 a corresponding plurality of separate line bridges 13 are arranged in the interior of the housing 9, seven in the example shown, which are arranged axially and radially offset from one another.
  • the corresponding terminal sections 8 are formed, which in their entirety form a corresponding star distributor.
  • Corresponding conductor ends arranged offset in the circumferential direction can accordingly be connected accordingly on the inner and outer circumference via the line bridges 13 extending in the circumferential direction. den, so that the corresponding meander structure of the individual phase conductors is formed over it.
  • the line bridges 13 are also appropriately insulated or provided with an insulating coating or the like.
  • FIG. 4 shows, in an enlarged partial view, the power supply 14, al so the HV terminal, with its housing 10, which is also multi-part here and which completely encapsulates the power rails 11. It is designed to be slightly arched so that it can be placed on the side of the stator to suit its shape.
  • Each busbar 11 respekti ve each connection terminal 12 is assigned to a corresponding phase, these phases are usually referred to as U, V and W.
  • the housing 10 of the power connection 14 also has corresponding openings through which the individual connections protrude.
  • the conductor ends protrude axially on the inner and outer circumference, it is conceivable to provide head ends axially protruding only on the inner or only on the propositionum catch. Furthermore, the conductor ends can also protrude radially and be connected to the axially arranged connection ring. The connection ring can also be attached radially and contact can be made with the axially or radially protruding conductor ends. So there are different types of configurations both with regard to the conductor routing and the positioning of the interconnection ring possible.
  • connection section 8 of the line bridges can finally also protrude axially from the housing 9; an axial and radial arrangement is also conceivable, depending on the configuration of the guidance and positioning of the conductor ends.

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 un stator pour une machine électrique, pourvu d'un enroulement (2) comprenant une pluralité de conducteurs (3) qui sont associés à une ou plusieurs phases et qui sont connectés les uns aux autres, les extrémités (6) d'au moins une partie des conducteurs (3) sur la périphérie intérieure et/ou sur la périphérie extérieure de l'enroulement (2) faisant saillie axialement ou radialement de l'enroulement (2), un anneau de connexion (7) auquel les conducteurs (3) sont raccordés étant mis en place axialement ou radialement sur l'enroulement (2), et les extrémités (6) respectivement d'au moins deux conducteurs (6) associés à une phase faisant saillie radialement ou axialement vers l'extérieur et étant reliées à un raccordement électrique (14) disposé radialement à l'extérieur de l'enroulement (2).
EP20703375.4A 2019-02-08 2020-01-10 Stator pour machine électrique Pending EP3921925A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019103191.5A DE102019103191A1 (de) 2019-02-08 2019-02-08 Stator für eine elektrische Maschine
PCT/DE2020/100015 WO2020160727A1 (fr) 2019-02-08 2020-01-10 Stator pour machine électrique

Publications (1)

Publication Number Publication Date
EP3921925A1 true EP3921925A1 (fr) 2021-12-15

Family

ID=69467280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20703375.4A Pending EP3921925A1 (fr) 2019-02-08 2020-01-10 Stator pour machine électrique

Country Status (5)

Country Link
US (1) US12068654B2 (fr)
EP (1) EP3921925A1 (fr)
CN (1) CN113396529A (fr)
DE (1) DE102019103191A1 (fr)
WO (1) WO2020160727A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019121188A1 (de) 2019-04-26 2020-10-29 Schaeffler Technologies AG & Co. KG Elektrische Maschine
WO2021018337A1 (fr) 2019-07-29 2021-02-04 Schaeffler Technologies AG & Co. KG Machine électrique
DE102019121184A1 (de) 2019-08-06 2021-02-11 Schaeffler Technologies AG & Co. KG Elektrische Maschine
DE102021100721A1 (de) 2021-01-15 2022-07-21 Schaeffler Technologies AG & Co. KG Stator und elektrische Maschine
DE102021117109B3 (de) 2021-07-02 2022-09-29 Schaeffler Technologies AG & Co. KG Schlankes, simples HV-Terminal für E-Motoren

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012029355A (ja) 2010-07-20 2012-02-09 Denso Corp 回転電機の固定子
JP5508640B2 (ja) 2010-12-28 2014-06-04 トヨタ自動車株式会社 回転電機のバスバーモジュールおよびその製造方法
JP5691968B2 (ja) * 2011-09-26 2015-04-01 トヨタ自動車株式会社 回転電機のステータ
US20140015359A1 (en) * 2012-07-11 2014-01-16 Remy Technologies, Llc Buss bar assembly having printed buss bar plates
DE102012020329A1 (de) * 2012-10-17 2014-04-17 Sew-Eurodrive Gmbh & Co Kg Elektromotor und Verfahren zum Herstellen eines Elektromotors
JP6098920B2 (ja) * 2012-10-19 2017-03-22 日本電産株式会社 ステータユニットおよびモータ
JP5661161B1 (ja) * 2013-10-07 2015-01-28 三菱電機株式会社 回転電機
JP5677602B1 (ja) * 2014-03-28 2015-02-25 三菱電機株式会社 回転電機
CN105099036A (zh) * 2014-05-12 2015-11-25 舍弗勒技术股份两合公司 电机及其制造方法、车用驱动装置
DE102014225242A1 (de) * 2014-12-09 2016-06-09 Robert Bosch Gmbh Verbindungsvorrichtung zwischen Statorwicklung und Steuereinrichtung einer elektrischen Maschine
KR102353916B1 (ko) * 2015-04-15 2022-01-21 엘지이노텍 주식회사 터미널 어셈블리 및 이를 포함하는 모터
ITBO20150189A1 (it) * 2015-04-16 2016-10-16 Magneti Marelli Spa Metodo di costruzione di una macchina elettrica presentante un avvolgimento statorico con barre rigide
CN107925296A (zh) * 2015-08-10 2018-04-17 日本电产株式会社 马达
JP6358220B2 (ja) * 2015-10-07 2018-07-18 トヨタ自動車株式会社 回転電機の端子台接続構造
JP6799962B2 (ja) 2016-08-03 2020-12-16 本田技研工業株式会社 バスバーユニット
DE112017004261T5 (de) * 2016-08-26 2019-05-16 Nidec Corporation Motor
DE102016123479A1 (de) * 2016-12-05 2018-06-07 Nidec Corporation Sammelschieneneinheit für einen Stator eines Elektromotors
KR102342561B1 (ko) * 2017-04-19 2021-12-23 엘지마그나 이파워트레인 주식회사 회전전기기기의 스테이터
DE102019121184A1 (de) * 2019-08-06 2021-02-11 Schaeffler Technologies AG & Co. KG Elektrische Maschine
DE102019121186A1 (de) * 2019-08-06 2021-02-11 Schaeffler Technologies AG & Co. KG Elektrische Maschine

Also Published As

Publication number Publication date
US20220052575A1 (en) 2022-02-17
WO2020160727A1 (fr) 2020-08-13
DE102019103191A1 (de) 2020-08-13
CN113396529A (zh) 2021-09-14
US12068654B2 (en) 2024-08-20

Similar Documents

Publication Publication Date Title
EP3921925A1 (fr) Stator pour machine électrique
EP3567703B1 (fr) Stator pour une machine électrique et procédé de fabrication
EP3966916A1 (fr) Stator pour machine électrique
DE102017201533B4 (de) Stator für eine elektrische Maschine
EP1705776B1 (fr) Stator pour machine électrique
DE102012007173A1 (de) Sammelschienenvorrichtung, Ständer, Motor und Herstellungsverfahren für Ständer
WO2016110427A1 (fr) Stator pour machine électrique et procédé de fabrication d'un tel stator
EP3895282B1 (fr) Stator, composant de raccordement et machine électrique
WO2015162586A2 (fr) Toron profilé, son utilisation, ainsi que procédé de fabrication d'un stator destiné à une machine électrique
EP2327138B1 (fr) Stator destiné à un moteur électrique avec rotor interne
DE102018219539A1 (de) Verschaltungsanordnung für eine elektrische Maschine
EP2541740B1 (fr) Stator
DE102017214957A1 (de) Verschaltungsanordnung für eine elektrische Maschine
DE102012024581A1 (de) Elektromotor mit einem Stator und Verfahren zur Herstellung eines Elektromotors
WO2020099609A1 (fr) Ensemble d'interconnexion conçu pour un moteur électrique
DE102005018600A1 (de) Statorspule mit konzentrierter Wicklung für eine rotierende elektrische Maschine
DE102016221043A1 (de) Modular aufgebauter Stator für einen Elektromotor oder Generator
EP4010962A1 (fr) Machine électrique
WO2012175485A2 (fr) Support de câblage pour le câblage des bobinages dentaires d'un stator d'une machine électrique et jeu d'éléments comprenant un tel support de câblage
WO2006042834A1 (fr) Machine electrique
EP1811632A1 (fr) Machine électrique tournante et le procédé de fabrication d'une telle machine électrique
EP3311469A1 (fr) Bobine préformée, structure de bobinages et stator d'un générateur d'une éolienne ainsi que procédé de fabrication d'un stator
EP1278288A2 (fr) Moteur à rotor extérieur
DE102006033431A1 (de) Kommutator und Anker
EP3959796B1 (fr) Stator pour une machine électrique rotative

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210908

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230522