WO2016119971A1 - Stator pour une machine électrique avec dispositif d'interconnexion encapsulé - Google Patents

Stator pour une machine électrique avec dispositif d'interconnexion encapsulé Download PDF

Info

Publication number
WO2016119971A1
WO2016119971A1 PCT/EP2015/079703 EP2015079703W WO2016119971A1 WO 2016119971 A1 WO2016119971 A1 WO 2016119971A1 EP 2015079703 W EP2015079703 W EP 2015079703W WO 2016119971 A1 WO2016119971 A1 WO 2016119971A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
receiving space
cover
carrier element
coil ends
Prior art date
Application number
PCT/EP2015/079703
Other languages
German (de)
English (en)
Inventor
Roland Lindwurm
Christoph Wieder
Alexander Schäflein
Jochen Wittmann
Original Assignee
Zf Friedrichshafen Ag
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2016119971A1 publication Critical patent/WO2016119971A1/fr

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
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/06—Machines characterised by the wiring leads, i.e. conducting wires 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 present invention relates to a stator for an electric machine with a sealed interconnection device according to the preamble of claim 1.
  • a generic stator is for example already out of the
  • the stator of the permanent magnet synchronous machine described therein comprises a laminated stator core with a plurality of stator coils whose coil ends are interconnected by means of an interconnection device with three connecting conductors to form a delta connection.
  • the connecting conductors are arranged in a receiving space of a support element adjacent to the coils, wherein the coil ends are introduced into the receiving space by entry recesses provided on the support element and contacted with the connecting conductors within the receiving space.
  • a casting compound that is liquid at its processing temperature and solidifies on curing is introduced into the receiving space, which covers the elements arranged therein for protection against external influences, in particular the penetration of moisture and dirt particles.
  • the present invention has the object to represent a stator of the type mentioned, in which the receiving space of the interconnecting device can be safely encapsulated in a manner opposite to the aforementioned prior art alternative manner to external influences.
  • This object is achieved by a stator for an electric machine having the features of patent claim 1.
  • a lid With the lid, the open side of the receiving space can be closed so that at least from this side no moisture and foreign particles can penetrate and the Verschaltungs Schemee the coil ends are protected with the connecting conductors.
  • a stiffening of the connecting device is achieved by the cover.
  • the introduction of a potting compound in the receiving space can thus be omitted, resulting in manufacturing and cost benefits.
  • the cover can be designed in many ways, for example, such that it engages over the carrier element or that it engages in the carrier element.
  • the lid can be designed or shaped so that it covers the inside of the receiving space elements substantially, in particular form-fitting or that the lid substantially fills the receiving space and that an optionally remaining free space is minimized.
  • the cover may have a deformable and thus adaptable to the contour of the elements located in the receiving space area of a plastic or elastic material.
  • This area can also be designed as a separate insert element assigned to the cover, as a result of which the cover is made in several parts.
  • the advantage is that the remaining trapped gas volume or generally the free volume is minimized, so that a condensation of the residual moisture optionally contained therein in a temperature change is low.
  • the carrier element can generally be arranged on the stator both radially and axially adjacent to the stator coils. In principle, the coil ends can also be brought out of the coils radially or axially aligned and enter the carrier element or the receiving space of the interconnection device.
  • the coil ends can be formed by entry recesses formed in the support on the carrier element and / or on the cover. be introduced, wherein the coil ends are sealed in the region of these successivesaus founded auslang für on the support member or the lid or on an at least indirectly cooperating with the support member or the lid member.
  • the further element can, for example, as will be explained below, be an area of a coil winding body. In this way, the entry region of the coil ends is protected in the interconnection device against external influences.
  • the interconnection device can have connecting conductors connected to the connecting conductors for supplying power to the stator, which likewise are sealed against the carrier element and / or the lid and inserted in the receiving space.
  • a sealing means for example in the form of a filler, can be introduced between a coil end and the carrier element, the cover or the element interacting therewith.
  • the filler can surround the coil ends and fill a gap remaining in the region of the entrance recess to the carrier element, the cover or the element interacting therewith.
  • a lacquer or a resin to be applied in the region of the entrance recesses which are customary for producing an insulation system on electric machines, can be used as the sealing means.
  • the sealing means may also be designed as a separate sealing element, which is arranged in the region of the inlet recesses and is in abutting contact with the coil ends and the carrier element, the lid and / or a cooperating element.
  • the sealing element can thus be arranged between the support element, the cover and a further element, for example, be inserted there.
  • such a sealing element may be designed as a ring seal, which is pushed onto the coil ends.
  • the stator coils comprise a winding body with a base region and two legs projecting therefrom, which have a Limit winding area. At least one of the legs may have a guide structure for the coil ends, whereby they are aligned in the direction of the inlet recess and guided there.
  • the cooperating with the support member element can thus be formed by a portion of a bobbin, in particular by the leg with the guide structure.
  • the sealing element on the guide structure of the winding body and bring the winding body in the region of the entrance recesses substantially gap-free on the support member or the cover in abutment.
  • the entry recesses on the carrier element of the interconnecting device can be dimensioned relatively generously in order to achieve a light and tolerancesmoderaten installation.
  • An entrance recess is at least partially covered by a winding body lying on the carrier element or its cover, in particular a limb.
  • the sealing element which is preferably already preassembled on the leg on the guide structure of the coil ends, seals the receiving space with respect to the surroundings, in particular with respect to the winding area of the stator coils.
  • a positional fixation of the connecting conductor located in the receiving space can be achieved by hold-downs arranged on the lid, for example in the form of projecting webs, wherein the hold-downs load the connecting conductors in the direction of a bottom or wall region of the carrier element or at least bear against the latter.
  • the carrier element and / or the lid can be made of a plastic material and preferably connected to one another in a material-locking manner.
  • support member and lid there are also alternatively positive or non-positive connections of support member and lid possible, such as a screw, latch or a bayonet connection.
  • Figure 1 is a schematic representation of an electric machine in mecanica, a swinerbauart with an interconnecting device in an axial section.
  • Fig. 2 is an enlarged view of the interconnecting device of Fig. 1;
  • FIG. 3 is a schematic fragmentary front view of the interconnecting device of FIG. 2; FIG.
  • FIG. 4a-d show an interconnecting device with a cover in several views, which has a plurality of radially protruding connecting conductors and axial entry recesses for coil ends;
  • Fig. 5 shows an interconnecting device with a lid in a perspective
  • FIGS. 4 a - d and 5 show a representation of a cover which is intended for use in the interconnection devices according to FIGS. 4 a - d and 5,
  • Fig. 7 is an illustration of a lid, which is provided for use in a wiring device with frontally led out leads.
  • FIG. 1 schematically shows an electric machine 10, more particularly a permanent magnet synchronous machine of internal rotor type, with a rotor 14 which is rotatable about a rotor shaft 12 and with a stator surrounding it radially outwardly.
  • the rotor 14 comprises a cup-shaped rotor carrier 18, on the cylindrical outer peripheral surface of a laminated rotor laminated core 20 is arranged, which carries a plurality of circumferentially spaced-apart permanent magnets 22.
  • the stator 16 comprises an annular stator carrier 24, in the central recess of which an annular stator lamination stack 26 likewise formed from laminations is arranged.
  • the stator support 24 may, for example, constitute an outer or an intermediate housing of the electric machine 10.
  • the laminated stator core 26 is segmented and assembled from a plurality of identical T-shaped stator segments that are received and held together by the stator support 24.
  • the laminated stator core 26 may also consist of a stack of annular lamellae in a conventional manner.
  • the laminated stator core 26 forms a voltage applied to the stator 24 annularly closed Statorjoch 30 with radially inwardly facing teeth 32, which are equipped to form the stator winding in a known manner with stator coils 36.
  • the coil ends 36a, b of the stator coils 36 are connected by means of a switching device 38 shown only schematically in FIG. 1 and connected to power electronics, not shown in the drawing, which can act on the winding to drive the electrical machine 10 with a variable phase and amplitude current ,
  • the stator coils 36 are wound before the assembly of the stator 16 by means of two, consisting of a heat-resistant plastic insulating or bobbins 40, 42 of a copper wire around the teeth 32 and there are formed by a radially inwardly, in Fig. 1st invisible tooth head secured against slipping.
  • the bobbins 40, 42 each include a front side on the laminated core 26 adjacent base portion 40a; 42a and two of them approximately at right angles and on the stator 16 axially projecting leg 40b, c; 42b, c, which limit the winding area in the radial direction.
  • guide structures 41 are in shape provided by insertion grooves, in which the coil ends 36a, b inserted and aligned in the direction of the interconnection device 38.
  • sealing means in the form of sealing elements 43 are arranged, which seal the coil ends 36a, b with respect to the legs 40b.
  • the legs 40b are also substantially gap-free and thus in the present sense sealingly on the support member 56 and support this so. To secure the circumferential position, the legs 40b have recesses 40d which are open towards the carrier element 56, into which projections 56d of the carrier element 56 pointing in this direction engage in a form-fitting manner.
  • the coils 36 are electrically associated with individual strands and are interconnected by means of the interconnection device 38 via common connection conductors 52a-c in a predetermined manner.
  • the connection conductors 52a-c have raised connection areas 53a-c opposite their base body.
  • two adjacent coil ends 36a, b of two circumferentially adjacent coils 36 are connected to a connection region 53a-c for realizing a delta connection.
  • the contacting of the coil ends 36a, b with the connecting conductors 52a-c preferably takes place cohesively, for example by soldering or welding, wherein a coupled process heat in the direction of the winding region and the winding body can propagate.
  • the sealing means or the sealing elements 43 are temperature-resistant to this process heat, so that thereby the winding body 40 are securely protected from an undesirably high heat input and associated deformation.
  • connection conductors 52a-c are accommodated for their arrangement on the stator 16 within an open, trough-shaped receiving space 55 of an annular carrier element 56 formed of plastic.
  • the open area points into the axial side facing away from the stator 16 and is thus freely accessible for the interconnection.
  • the carrier element 56 For interconnecting the coil ends 36a, b, the carrier element 56, optionally with the already inserted therein connecting conductors 52a-c, as shown schematically in FIG Fig. 1, arranged on the stator 16 and fixed there, for example by means of a snap-in connection not shown in the drawing.
  • the receiving space 55 of the support member 56 is bounded by a bottom 56a and vertically projecting side walls 56b, c.
  • the receiving space 55 of the support member 56 is bounded by a bottom 56a and vertically projecting side walls 56b, c.
  • entrance recesses 56d are provided in the radial wall region 56b (FIGS. 2, 3). These are designed as trough-shaped or slot-like recesses and with respect to the stator starting from the free axial side of the side wall 56b and arranged such that the guided in the guide structure 41 coil ends 36a, b radially and on a comparatively short path through the radial wall portion 56b in the receiving space 55 of the interconnection arrangement 38 can be inserted.
  • the entrance recesses 56d are made slightly larger in the circumferential direction than corresponds to the mutual distance of two each adjacent to the stator 16 coil ends of two immediately adjacent coils. As a result, in the position shown, the coil ends 36a, b can be securely inserted into the carrier element 56 even with a small positional deviation.
  • the lid 58 and the support member 56 are made of a plastic and materially connected by welding permanently connected to each other.
  • the cover 58 has a main body 58a and a plurality of centering projections 58b arranged in the region of the inner and / or outer circumference, which come to rest against the corresponding wall regions 56b of the carrier element 56.
  • holder 58c which can bear against the connecting conductors 52a-c and secure them in their position.
  • the hold-downs 58c closest to the circumferential boundary of a cover 58 serve simultaneously as centering projections 58b.
  • separating webs 56e are provided which can be formed both on the carrier element 56 itself (see FIGS. 4b-d) and / or on the cover 58.
  • a plurality of radial extensions 58d are formed on the lid 58, which engage on the carrier element 56 in a form-fitting manner in correspondingly engaging and likewise radially projecting engagement formations, in particular protruding pockets 56, or alternatively embrace them in a form-fitting manner.
  • connecting means for forming a latching connection, a bayonet closure or further may also be formed at these positions.
  • the cover 58 may be made in one piece as well as in several parts, in particular segmented in the circumferential direction. In the latter case, the individual segments can interlock positively, in particular with the formation of a labyrinth seal.
  • the interconnecting device 38 further has connecting conductors 60a-c connected to the connecting conductors 52a-c, which are inserted sealed into the receiving space 55 relative to the carrier element 56 and / or the cover 58.
  • the connecting conductors 60a-c are provided, at least in their entry region into the receiving space 55, in each case with a sealing element 62 in the form of an insulating plastic sheath, whereby the said inlet regions are protected against the entry of moisture and foreign particles.
  • connection conductors 60a-c can basically be inserted radially through one of the circumferential surfaces, that is to say the inner circumferential surface 56c or the outer circumferential surface 56b of the carrier element 56 or the cover 58.
  • the connecting conductors 60a-c can also be introduced on the front side, for which purpose corresponding recesses 58e are provided in the cover 58 with a view to FIG.
  • FIGS. 4a-d show an interconnection device 38 with a cover 58 in several views, which has a plurality of radially protruding connection conductors 60a-c and axial entry recesses 56d for coil ends 36a, b.
  • FIG. 5 shows an interconnecting device 38 with a lid 58 in a perspective view, which likewise has a plurality of radially protruding connecting conductors 60a-c, but radial inlet recesses 56d for coil ends 36a, b.
  • FIG. 6 is an illustration of a lid 58 provided for use in the interconnect devices 38 of FIGS. 4a-d and 5.
  • these can also be arranged axially staggered to the stator, wherein the other elements, if they are required, are adapted accordingly.
  • these instead of a radial positioning of the coils to the carrier element of the interconnection device, these also take place in the axial direction.
  • the special design of the electrical machine with respect to the basic design of the stator interconnection device is irrelevant; For example, it may also be an external-type electric machine.

Landscapes

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

Abstract

L'invention concerne un stator (16) pour une machine électrique (10), lequel comprend un empilage de tôles de stator (26) muni de bobines de stator (36) et un dispositif d'interconnexion (38) muni d'un élément support (56). Les extrémités de bobine (36a, b) des bobines de stator (36) sont ici introduites dans un cadre d'accueil (55) ouvert d'un côté de l'élément porteur et interconnectées avec des conducteurs de liaison (52a-c) qui s'y trouvent. Selon l'invention, en vue de former un système de fermeture du dispositif d'interconnexion (38) par lequel l'espace d'accueil (55) de l'élément porteur (56) avec les éléments (36a, b ; 52a-c) qui s'y trouvent peut être fermé par rapport à un environnement externe, l'élément porteur (56) est réalisé avec un couvercle (58).
PCT/EP2015/079703 2015-01-26 2015-12-15 Stator pour une machine électrique avec dispositif d'interconnexion encapsulé WO2016119971A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015201218.2 2015-01-26
DE102015201218.2A DE102015201218A1 (de) 2015-01-26 2015-01-26 Stator für eine elektrische Maschine mit einer gekapselten Verschaltungseinrichtung

Publications (1)

Publication Number Publication Date
WO2016119971A1 true WO2016119971A1 (fr) 2016-08-04

Family

ID=54849933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/079703 WO2016119971A1 (fr) 2015-01-26 2015-12-15 Stator pour une machine électrique avec dispositif d'interconnexion encapsulé

Country Status (2)

Country Link
DE (1) DE102015201218A1 (fr)
WO (1) WO2016119971A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114039456A (zh) * 2021-10-14 2022-02-11 智新科技股份有限公司 一种电磁防干扰电机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018128521A1 (de) * 2018-11-14 2020-05-14 Bayerische Motoren Werke Aktiengesellschaft Stützeinrichtung für einen Rotor einer fremderregten Innenläufer-Synchronmaschine, Rotor, fremderregte Innenläufer-Synchronmaschine sowie Kraftfahrzeug
DE102019217540A1 (de) * 2019-09-06 2021-03-11 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Stator eines Kältemittelantriebs
DE102021103295A1 (de) 2021-02-11 2022-08-11 Nidec Corporation Elektromotor mit Bajonettverschluss zwischen Stator und Sammelschieneneinheit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2139094A1 (fr) * 2008-06-26 2009-12-30 ZF Friedrichshafen AG Stator et arrangement de connection d'une machine électrique
DE102009045551A1 (de) 2008-11-05 2010-05-06 Zf Friedrichshafen Ag Stator für eine elektrische Maschine mit einer Verschaltungseinrichtung
DE102009001830A1 (de) * 2009-03-25 2010-10-07 Ferchau Engineering Gmbh Stator für eine elektrische Maschine mit einer Verschaltungseinrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2139094A1 (fr) * 2008-06-26 2009-12-30 ZF Friedrichshafen AG Stator et arrangement de connection d'une machine électrique
DE102009045551A1 (de) 2008-11-05 2010-05-06 Zf Friedrichshafen Ag Stator für eine elektrische Maschine mit einer Verschaltungseinrichtung
DE102009001830A1 (de) * 2009-03-25 2010-10-07 Ferchau Engineering Gmbh Stator für eine elektrische Maschine mit einer Verschaltungseinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114039456A (zh) * 2021-10-14 2022-02-11 智新科技股份有限公司 一种电磁防干扰电机

Also Published As

Publication number Publication date
DE102015201218A1 (de) 2016-07-28

Similar Documents

Publication Publication Date Title
DE102015200089B4 (de) Stator für eine elektrische Maschine und Verfahren zum Herstellen eines solchen
EP2139094B1 (fr) Stator et arrangement de connection d'une machine électrique
DE102009045551A1 (de) Stator für eine elektrische Maschine mit einer Verschaltungseinrichtung
WO2016110427A1 (fr) Stator pour machine électrique et procédé de fabrication d'un tel stator
EP2959564A2 (fr) Moteur électrique, notamment d'un composant de véhicule
DE102010064051A1 (de) Wicklungsträger zur Isolation einer Einzelzahnwicklung bei elektrischen Maschinen
DE102015208186B4 (de) Stator für eine elektrische Maschine mit einer vergossenen Verschaltungseinrichtung und elektrische Maschine mit einem solchen Stator
DE112016001697B4 (de) Stator für rotierende elektrische Maschine
WO2016180588A1 (fr) Stator pour une machine électrique doté d'un dispositif d'interconnexion encapsulé et machine électrique équipée d'un tel stator
WO2016119971A1 (fr) Stator pour une machine électrique avec dispositif d'interconnexion encapsulé
WO2018192817A1 (fr) Module de dent polaire pour une machine électrique, pièce active pourvue d'un module de dent polaire et machine électrique
EP3078099A2 (fr) Stator pour moteur à courant continu à commutation électronique
DE102014211923A1 (de) Elektrische Maschine mit einer Statorverschaltungsanordnung
DE112012006143T5 (de) Stator und diesen aufweisende elektrische Umlaufmaschine
WO2016184622A1 (fr) Stator d'une machine électrique équipé d'un dispositif de câblage et machine électrique équipé d'un tel stator
DE102013213449A1 (de) Stator für eine elektrische Maschine
DE102015211836A1 (de) Verfahren zum Bewickeln eines Stators, sowie ein Stator und eine elektrische Maschine beinhaltend einen solchen Stator
DE102021203210A1 (de) Isolationsvorrichtung, Stator und elektrische Maschine
DE102011078025A1 (de) Wickelkopfträger für einen Stator einer elektrischen Maschine
DE102009001830A1 (de) Stator für eine elektrische Maschine mit einer Verschaltungseinrichtung
WO2020074660A1 (fr) Moteur électrique, dispositif de freinage et véhicule
DE102016222614B4 (de) Stator einer elektrischen Maschine, eine elektrische Maschine, sowie Verfahren zum Herstellen einer solchen
WO2016041704A1 (fr) Stator destiné à un moteur électrique, muni d'un système de câblage
WO2016134895A1 (fr) Stator pour une machine électrique avec dispositif d'interconnexion scellé et machine électrique équipée d'un tel stator
WO2012022521A1 (fr) Dispositif de contact dans un stator de machine électrique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15808647

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 15808647

Country of ref document: EP

Kind code of ref document: A1