WO2016110423A1 - Plaque de câblage pour un stator d'une machine électrique et procédé de fabrication de ladite plaque de câblage - Google Patents

Plaque de câblage pour un stator d'une machine électrique et procédé de fabrication de ladite plaque de câblage Download PDF

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Publication number
WO2016110423A1
WO2016110423A1 PCT/EP2015/081262 EP2015081262W WO2016110423A1 WO 2016110423 A1 WO2016110423 A1 WO 2016110423A1 EP 2015081262 W EP2015081262 W EP 2015081262W WO 2016110423 A1 WO2016110423 A1 WO 2016110423A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
wire
conductor
connecting wires
elements
Prior art date
Application number
PCT/EP2015/081262
Other languages
German (de)
English (en)
Inventor
Marko Anesi
Tamas Csoti
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 WO2016110423A1 publication Critical patent/WO2016110423A1/fr

Links

Classifications

    • 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
    • H02K15/0056—Manufacturing winding connections
    • H02K15/0062—Manufacturing the terminal arrangement per se; Connecting the terminals to an external circuit
    • 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
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations

Definitions

  • the invention relates to the circuit board for a stator of an electric machine, and to an electric machine and to a method for producing such a stator according to the preamble of the independent claims.
  • a stator of an electric machine in which axially on a laminated plate package, an insulating plate and a Verschaltungsin are arranged.
  • the stator is wound for example by means of needle winding, wherein the individual partial coils are connected to each other by means of connecting wires on the outer periphery of the Verschaltungside.
  • the phase terminals for the coils are led out of the stator for example by means of a flexible cable and connected to a spatially separated control unit of the electric motor.
  • the object of the invention is now to provide a favorable contacting of the stator coils with a directly axially arranged over the stator electronics unit with a customer specified electronic interface.
  • the device according to the invention and the method according to the invention with the features of the independent claims has the advantage that, due to the design of the conductor elements with a flattened fastening section, it is reliable can be contacted with the round connecting wire.
  • Electrodes are defined to be applied to the outer abutment surface of this loop. This ensures a reproducible flow of current through the electrodes to the loop and also a more flat attachment of the loop to the
  • Wire cross-section on the connector plug in the flattened wire cross-section merges with the flat outer surfaces of the attachment portion.
  • the attachment section for the connection wire is approximately at right angles to one
  • the middle sections of the conductor elements extend annularly in a plane along the closed ring of the interconnection plate and are supported axially on this ring.
  • the terminal plugs are then angled axially and are guided in axial guide channels of the axially extending holding elements, wherein the ends of which form the wire pins for the connection plug.
  • connection plugs are guided in a common holding element, so that only three axial extensions are formed as holding elements in the case of six connection plugs.
  • the two adjacently arranged connection plug are electrically insulated from each other by the plastic guides of the holding elements.
  • all partial coil pairs are thus controlled as six separate phases
  • Plastic ring six separate conductor elements with a total of six connection plugs are arranged.
  • the holding elements can be wrapped advantageously by means of a separate custom cover plate, which then the plug socket for the
  • connection to the control unit with the connection plugs forms.
  • the middle parts of the conductor elements are radially offset on axially different planes, so that here is a touch of the conductor elements
  • Conductor elements whose radially outwardly angled mounting portions can cross the middle portions of the outer middle portions without contacting them.
  • the insulating lamella integrally molded on the insulating lamella
  • a 12-tooth stator six stator teeth are wound on the radially first stator half with a first winding wire, and thereafter the remaining six stator teeth are wound with a second separate winding wire.
  • the wire beginning and the wire end of a single winding strand in the insulating lamellae are arranged side by side in parallel - in particular clamped into corresponding labyrinth-shaped recordings of the insulating lamella in order to fix them reliably - so that these two adjacent wires can be electrically contacted together by the fastening sections of the conductor elements. in the same way as the individual short connecting wires of the wound through coil pairs.
  • the loop with the flattened wire cross-section is thus placed around one or two parallel connecting wires and radially compressed by means of the hot-stacking electrodes.
  • the electric machine according to the invention has a stator body, which is stacked from individual laminations, which together result in a disk set.
  • stator teeth with the outer yoke ring of the stator each form a one-piece closed in the circumferential direction stator blade.
  • On two immediately adjacent stator teeth is connected to a connecting wire
  • Part coil pair wound which is connected in each case via its own conductor element to the control unit.
  • the current flows through the connection plug to Wire pin over the middle section and the attachment section to the
  • the interconnection plate is axially applied with their spacers directly to the end face of the stator body, and the conductor elements are then electrically connected to the connecting wires of the sub-coil pairs.
  • the flat outer surfaces of the loop are applied transversely to the connecting wires and bent to an at least approximately closed loop and contacted electrically.
  • the two electrodes are each applied to the flat radial outer surfaces of the loop and pressed radially into the radial opening of the guide elements.
  • the two electrodes are each applied to the flat radial outer surfaces of the loop and pressed radially into the radial opening of the guide elements.
  • the stator can be axially mounted in a motor housing, for example, pressed or glued. Thereafter, a bearing plate can be axially added to the wiring board, the bearing plate has at the points of the holding elements corresponding openings to the plug socket with the
  • connection plugs To record connection plugs. These breakthroughs in the bearing cap then form the electrical feedthroughs from the engine control unit to the electrical winding of the stator.
  • FIG. 3 shows a first embodiment of a wound stator with insulating lamella 4 is a corresponding plan view of FIG .. 3
  • FIG. 3 an embodiment of FIG. 3 with attached
  • FIG. 7 shows the embodiment according to FIG. 5 with a customer cover plate
  • FIG. 8 shows an inventive conductor element without a circuit board
  • Fig. 9 shows schematically the hot stacking connection method.
  • a cut-open stator 10 is shown schematically, on the
  • Statorzähnen 14 the winding diagram of the electrical winding 16 according to the invention is shown.
  • the stator 10 has, for example twelve stator teeth 14, wherein each stator tooth 14 is always wound exactly one partial coil 18.
  • two directly adjacent partial coils 18 are connected by means of a short connecting wire 31 to an adjacent partial coil pair 17, each of which forms a separate phase 26 VI, U1, W1, V2, U2, W2 in this embodiment.
  • the three phases 26 VI, Ul, Wl form a separate winding strand 24, which is wound from a separate winding wire 22.
  • the three phases 26 V2, U2 and W2 form a second winding strand 25, which is wound from a separate winding wire 22 and electrically insulated from the first winding strand 24, as shown by the dash-dot line between the sixth and seventh stator tooth 14.
  • a first wire beginning 28 on the second stator tooth 14 is started and a connecting wire 30 is led to the fifth stator tooth 14.
  • the sixth stator tooth 14 is wound, so that the sub coil pair 17 is connected by means of the short connection wire 31.
  • the winding wire 22 is guided by means of the connecting wire 30 to the third stator tooth 14, there to form a connected by means of the connecting wire 31 partial coil pair 17 with the fourth stator tooth 14.
  • the winding wire 22 is guided as a connecting wire 30 to the first stator tooth 14, where the wire end 29 of the first winding strand 24 immediately adjacent to
  • Wire start 28 is ordered.
  • the second winding strand 25 is connected to a separate winding wire 22 corresponding to the winding of the first
  • the wire beginning 28 and the wire end 29 of the two winding strands 24, 25 are each electrically connected to each other.
  • six phases 26 can be controlled separately from each other.
  • FIG. 3 shows a three-dimensional view of a stator 14, which is wound in accordance with the winding diagram of FIG.
  • the stator 14 has a stator 34, which is composed of individual laminations 36, for example.
  • the stator body 34 in this case comprises an annular closed yoke yoke 38, on which the stator teeth 14 are formed radially inwardly. Inside, the stator points
  • stator teeth 14 extend in the radial direction 4 inwards and in the axial direction 3 along the rotor axis.
  • the stator teeth 14 are formed entangled in the circumferential direction 2 to reduce the cogging torque of the electric motor 12.
  • the laminations 36 in the circumferential direction 2 accordingly
  • insulating lamellae 40 are placed on both axial end faces in order to electrically insulate the winding wire 22 from the stator body 34.
  • At least one of the two insulating lamellae 40 has an annularly closed circumference 41, from which 4 insulator teeth 42 extend in the radial direction and cover the end faces 39 of the stator teeth 14.
  • At the annular periphery 41 of the insulating lamella 40 are
  • Guiding elements 44 are formed, in which the connecting wires 30, 31 are guided between the sub-coils 18.
  • 41 grooves 45 are formed in the circumferential direction 2, for example, on the outer circumference, so that the connecting wires 30, 31 in axially offset planes are arranged to prevent crossover of the connecting wires 30, 31.
  • the short connecting wires 31 between the sub-coil pairs 17 are arranged in the uppermost axial plane 32, wherein in particular all six connecting wires 31 for contacting the phase connections all run in the same axial plane 32.
  • two axial extensions 46 are always formed on the insulating lamella 40 between two partial coils 18 of a partial coil pair 17, which are provided by an intermediate radial opening 47
  • Part coil pairs 17 freely accessible from all sides and are not in particular in the region of the radial opening 47 on the insulating lamella 40 at.
  • Wire starts 28 and wire ends 29 are fixed in this embodiment in a labyrinth arrangement 50, which are each arranged in the circumferential direction 2 immediately adjacent to the two axial extensions 46, which are spaced by the radial opening 47.
  • a labyrinth arrangement 50 which are each arranged in the circumferential direction 2 immediately adjacent to the two axial extensions 46, which are spaced by the radial opening 47.
  • Winding strand 24 is arranged in a second labyrinth arrangement 50 in the circumferential direction opposite to the radial opening 47.
  • Connecting wires 31 are arranged at the same radius.
  • the free ends of the wire beginning 28 and the wire end 29 terminate directly after the corresponding labyrinth arrangements 50, so that they do not protrude radially beyond the connecting wires 30, 31.
  • the connecting wires 30, 31 all extend in the circumferential direction 2 along the guide elements 44 and lie radially outside of the wound on the stator teeth 14 sub-coils 18.
  • the two motor halves 11, 13 are also schematically separated by the dash-dotted line, the left half of the engine 11th is electrically isolated from the right motor half 13.
  • the electrical winding 16 is manufactured, for example, by means of needle windings, wherein the connecting wires 30, 31 are guided radially outwards between the sub-coils 18 by means of a winding head and into the guide elements 44 can be stored.
  • all the connecting wires 30, 31 are arranged axially on one side of the stator body 34.
  • Part coil pairs 17 each connect to each other, are guided on the axially opposite arranged Isolierlamelle 40.
  • connection plug 54 can be added to the custom connector connector 56 of a controller.
  • connection plugs 54 are arranged, which are each electrically connected to a phase 26 of the electrical winding 16.
  • each phase 26 is formed by exactly one partial coil pair 17, so that the six connection plugs 54 are contacted with exactly six connecting wires 31 of adjacent partial coil pairs 17.
  • the interconnection plate 52 has exactly six conductor elements 58 which, at an axial bend 100, terminate the connection
  • Plug 54 and at the other end 67 has a mounting portion 60 which is connected to the connecting wires 31 - for example, welded - is.
  • the circuit board 52 has a plastic body 62, which is formed as a closed ring 61, through which the rotor can be inserted into the stator 10.
  • integrally holding elements 63 are integrally formed, which in
  • Axial direction 3 from the stator 34 extend away.
  • the guide elements 58 extend in the circumferential direction 2 along the plastic body 62, wherein the angled connection plug 54 are guided within guide channels 99 of the holding elements 63 in the axial direction 3.
  • the conductor elements 58 have a fastening portion 60 projecting radially on a bending region 70, the free end of which is designed as a loop 64 which surrounds the connecting wires 31.
  • the loop 64 is formed from a sheet material whose cross-section is approximately rectangular.
  • Fixing portion 60 can be bent around the connecting wire 31 during its mounting. After placing the open loop 64 around the
  • Electrodes 71 are applied, which are compressed in the radial direction 4, while they are energized to weld the loop 64 with the connecting wire 31.
  • the insulating varnish of the connecting wire 31 is melted, so that there is a metallic bond between the attachment portion 60 and the connecting wire 31.
  • the loop 64 is in the region of the radial
  • Fixing portion 60 can be pressed, whereby the loop 64 is closed.
  • the loop 64 encloses only a single connecting wire 31 or at the same time two parallel connecting wires 31, which are formed from the wire beginning 28 and the wire end 29 of a single winding strand 24, 25.
  • the connection plug 54 are here designed as wire pins 55, with their free axial end 68 in a
  • connection plug 56 of the customer - for example by means of an insulation displacement connection - can be inserted.
  • connection plug 54 Trained as a wire pin 55 connection plug 54 is supported axially with the bend 100 on the plastic ring 62 as an axial stop 72 from.
  • a first guide surface 74 and a second guide surface 75 are formed on the holding element 63, which the
  • Support connection plug 54 in both opposite circumferential directions 2. This prevents the terminal connector 54 from inserting the
  • the first guide surface 74 and the second guide surface 75 are integrally formed here in the guide channels 99 of the holding elements 63.
  • the conductor elements 58 are arranged at least partially radially next to each other, whereby it is necessary that the
  • Fixing portions 60 of the inner conductor elements 58 radially cross the outer conductor elements 58 to be contacted with the connecting wires 31. Therefore, the radially inner conductor elements 58 on an axially higher track 76 of the Plastic body 62 arranged, and the radially outer conductor elements 58 on an axially lower path 77.
  • the radially inner conductor elements 58 on an axially higher track 76 of the Plastic body 62 arranged, and the radially outer conductor elements 58 on an axially lower path 77.
  • the radially inner conductor elements 58 on an axially higher track 76 of the Plastic body 62 arranged, and the radially outer conductor elements 58 on an axially lower path 77.
  • connection plugs 54 are always arranged in a common holding element 63, wherein the holding elements 63 each have two separate axial guide channels 99 for the wire pins 55.
  • the wire pins 55 are arranged in the circumferential direction 2 separated from each other electrically.
  • the guide channels 99 respectively form the first and second guide surfaces 74, 75 for the respective adjoining connection plug 54.
  • the two guide channels 99 are interconnected by a circumferential wall 97, and thus together form the one-piece holding elements 63 for accommodating two wires each. Pins 55.
  • In the region of the holding elements 63 are - this axially opposite - spacer 84 formed, which supported the interconnection plate 52 axially relative to the stator 34.
  • Figures 5 and 6 has exactly one retaining element 63rd
  • Control unit contacted with the connection plugs with the connection plugs 54.
  • the holding elements 63 engage in the openings of the bearing cap and thus form a plastic insulation of the wire pins 55 relative to the bearing cap.
  • Axially opposite to the holding elements 63 axial spacers 84 are formed, which engage in passage openings 108 in the insulating lamella 40.
  • Spacers 84 are located directly on the end face 39 of the stator 34, so that the ends 68 of the wire pins 55 a defined distance from the stator 10 and have the surrounding motor housing.
  • the spacers 84 are connected via support webs 66 in one piece with the holding elements 63.
  • FIG. 6 shows how the two wire pins 55 rest against their guide channels 99 on both sides.
  • the conductor element 58 first extends radially inwards, this region resting against an angular support element 73 and in particular being fixed directly adjacent by means of the clip connection 48.
  • the respective central portion 78 of the conductor element 58 adjoins, which is also formed as a round wire. Since the radially adjacent conductor elements 58 are arranged on axially different tracks 76, 77, they do not touch, so that they are electrically insulated from each other.
  • the stator 10 of FIGS. 5 and 6 is covered with a customer masking plate 51, which is fastened axially over the interconnection plate 58.
  • the customer cover plate 51 is made of insulating material, preferably plastic, so that the middle sections 78 are insulated.
  • the customer covering plate 51 has cover boxes 53, which enclose the guide channels 99 and have axial holes 105 for the passage of wire pins 55.
  • the cover boxes 53 plug socket 103 for the
  • Cover boxes 53 has one of the other deviating axial cross-section, which corresponds to the corresponding axial opening in the bearing cap.
  • the anti-rotation device for the bearing cap can therefore also be realized exclusively by the cover boxes 53 of the customer covering plate 51 or in conjunction with the axial cross section of the retaining elements 63.
  • the starting material is a wire with an approximate one round wire diameter, which is bent or bent according to the course on the wiring board 52.
  • the wire pins 55 are bent at the bends 100 axially by about 90 °, the central portions 78 extend along the interconnecting plate 52, not shown.
  • the mounting portions 60 are bent in a bending region 70 radially outward and have the open loop 64 with the free leg 65 is bent to the assembly on the wire connection 31 to a closed loop 64, as shown in Figure 9. From the bending region 70, the originally round wire diameter is flattened so that the cross-section has two flat, approximately parallel outer surfaces 79.
  • the wire is in the attachment section 60
  • the entire loop 64 is formed with the approximately rectangular cross-section.
  • the electrodes 71 lie on two
  • FIG. 9 shows the hot-stacking production method for contacting the
  • the electrodes 71 are applied to the outer flat surfaces 79 of the loop 64, radially compressed and energized.
  • the conductor loop 64 is approximately closed around the connecting wires 31, since in the radial opening 47 of the insulating lamella 40 no disturbing guide elements 44 are in the way.
  • the attachment portion 60 is by means of the clip connection 48 at the circuit board 52 fixed.
  • the electrical winding 16 is contacted with a control device in which, for example, the interconnection of Figure 2 can be realized, the six

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne une plaque de câblage (52) d'un stator (10) d'une machine électrique (12) et un procédé de fabrication d'un tel stator (10), la plaque de câblage permettant de relier un enroulement électrique (16) du stator (10) à des connecteurs de liaison spécifiques aux clients (56) pour l'alimentation électrique. La plaque de câblage (52) comprend des éléments conducteurs (58) qui comportent d'un côté des connecteurs de raccordement axiaux (54) pour les connecteurs de liaison (56) et, d'un autre côté, des secteurs de fixation (60) dont les extrémités (67) présentent une section transversale aplatie – en particulier approximativement rectangulaire – et entourent d'une manière à établir un contact un fil de liaison rond (31) de l'enroulement (16).
PCT/EP2015/081262 2015-01-07 2015-12-28 Plaque de câblage pour un stator d'une machine électrique et procédé de fabrication de ladite plaque de câblage WO2016110423A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015200086.9A DE102015200086A1 (de) 2015-01-07 2015-01-07 Verschaltungsplatte für einen Stator einer elektrischen Maschine und Verfahren zum Herstellen einer solchen
DE102015200086.9 2015-01-07

Publications (1)

Publication Number Publication Date
WO2016110423A1 true WO2016110423A1 (fr) 2016-07-14

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ID=55071021

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/081262 WO2016110423A1 (fr) 2015-01-07 2015-12-28 Plaque de câblage pour un stator d'une machine électrique et procédé de fabrication de ladite plaque de câblage

Country Status (2)

Country Link
DE (1) DE102015200086A1 (fr)
WO (1) WO2016110423A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016223003A1 (de) * 2016-04-29 2017-11-02 Robert Bosch Gmbh Stator für eine elektrische Maschine sowie eine elektrische Maschine mit solch einem Stator
EP3300218B1 (fr) * 2016-09-22 2019-07-03 CPT Group GmbH Contact tournant, stator et moteur électrique
DE102019210146B4 (de) * 2019-07-10 2021-04-29 Bühler Motor GmbH Verfahren zur Herstellung eines Stator eines Elektromotors
DE102019213538A1 (de) * 2019-09-05 2021-03-11 Vitesco Technologies GmbH Elektromotor
EP4244959A1 (fr) * 2020-12-09 2023-09-20 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Moteur électrique pour véhicule automobile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740937A1 (de) * 1997-09-17 1999-03-18 Trw Fahrzeugelektrik Stator und Verfahren zum Bewickeln eines Stators für einen bürstenlosen Gleichstrommotor
JP2002153003A (ja) * 2000-11-13 2002-05-24 Nippon Densan Corp モータ用ステータ
DE10261611A1 (de) * 2002-12-27 2004-07-08 Robert Bosch Gmbh Verschaltelement für eine Wicklung einer elektrischen Maschine
EP2624415A1 (fr) * 2012-02-01 2013-08-07 Faurecia Bloc Avant Moteur électrique muni d'une plaque de connexion à crochets
DE102012224153A1 (de) * 2012-12-21 2014-06-26 Robert Bosch Gmbh Stator für eine elektrische Maschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005051508A1 (de) * 2005-10-26 2007-05-16 Sew Eurodrive Gmbh & Co Elektromotor und Wickelverfahren
DE102013205913A1 (de) * 2013-04-04 2014-10-09 Robert Bosch Gmbh Elektronisch kommutierter Antriebsmotor sowie Elektrowerkzeugmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740937A1 (de) * 1997-09-17 1999-03-18 Trw Fahrzeugelektrik Stator und Verfahren zum Bewickeln eines Stators für einen bürstenlosen Gleichstrommotor
JP2002153003A (ja) * 2000-11-13 2002-05-24 Nippon Densan Corp モータ用ステータ
DE10261611A1 (de) * 2002-12-27 2004-07-08 Robert Bosch Gmbh Verschaltelement für eine Wicklung einer elektrischen Maschine
EP2624415A1 (fr) * 2012-02-01 2013-08-07 Faurecia Bloc Avant Moteur électrique muni d'une plaque de connexion à crochets
DE102012224153A1 (de) * 2012-12-21 2014-06-26 Robert Bosch Gmbh Stator für eine elektrische Maschine

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Publication number Publication date
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