EP2377229A2 - Stator dans un moteur électrique - Google Patents

Stator dans un moteur électrique

Info

Publication number
EP2377229A2
EP2377229A2 EP09737408A EP09737408A EP2377229A2 EP 2377229 A2 EP2377229 A2 EP 2377229A2 EP 09737408 A EP09737408 A EP 09737408A EP 09737408 A EP09737408 A EP 09737408A EP 2377229 A2 EP2377229 A2 EP 2377229A2
Authority
EP
European Patent Office
Prior art keywords
carrier
stator
teeth
tooth
stator according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09737408A
Other languages
German (de)
English (en)
Inventor
Johannes Duerr
Stefan Keil
Wolfgang Hilgers
Adolf Dillmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2377229A2 publication Critical patent/EP2377229A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • 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
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
    • 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
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings

Definitions

  • the invention relates to a stator in an electric motor, in particular in a control or drive motor in motor vehicles.
  • Described DC motor whose stator comprises a fixed stator in a housing, which is composed of a plurality of individual lamellae.
  • the lamellae are arranged axially one behind the other and support a stator winding, via which a magnetic field is generated, which interacts with permanent magnets on the rotor shaft.
  • the lamellae form a coherent package and are held together axially by suitable clamping means.
  • the invention is based on the object of structurally simple to construct a stator in an electric motor.
  • the stator according to the invention is used in an electric motor, for example in a control or drive motor in motor vehicles. Applications may also be considered as a starter motor, as a steering motor or for actuating an auxiliary unit such as, for example, a windshield wiper, a window sash. bers or a seat adjustment motor.
  • the electric motor comprises the stator according to the invention and a rotor shaft which is rotatably mounted in the stator.
  • the stator has a plurality of individual stator elements distributed over the circumference, which each form carrier teeth, each carrier tooth being provided with a wound coil.
  • the various coils on the carrier teeth are at least partially electrically connected to each other and are electrically energized to generate a magnetic field.
  • latching elements for mechanical connection of the support teeth are arranged with each other on the support teeth.
  • the locking elements make it possible to attach two support teeth to each other, so that a continuous chain can be assembled in the direction of a plurality of contiguous support teeth to form the stator. It may be expedient to carry out the connection between the support teeth exclusively by mechanical means and by means of the locking elements, so that beyond the locking elements no further connecting elements between the support teeth or a support tooth and another component are required.
  • the locking elements are in particular made in one piece with the carrier teeth, so that no external, additional
  • the latching elements are arranged adjacent to the radial outer side of the carrier teeth.
  • the positioning of the latching elements on the radial outer side and in the circumferential direction on the outside has the advantage that a continuous stator ring can be formed from the carrier teeth without hindrance by the latching elements.
  • the latching elements are integrally formed with a plastic casing which is part of the carrier teeth.
  • the carrier teeth on an iron core and the plastic casing is sprayed onto the iron core, so that the Iron core is at least partially covered by the plastic sheath.
  • the locking elements are preferably made in one piece with the plastic casing and are also produced by injection molding.
  • the locking elements can be formed separately from the plastic sheath.
  • the plastic sheath exists only in the region of the coil winding in order to achieve an electrical separation of coil and iron core.
  • the latching elements can be injection-molded as a plastic part directly on the iron core of the carrier tooth.
  • the latching elements are formed as metal components, which are connected to the main body of the carrier tooth.
  • At least one of the latching elements is designed to be elastically deformable.
  • a wall section carrying a latching element can have a reduced cross-section, so that this latching element can execute an at least slight bend over the reduced wall cross-section.
  • a latching recess which is part of a latching element, with a bendable wall, so that a latching projection, which forms the second latching element, can be buttoned into the latching recess by slight bending of the wall.
  • the carrier teeth are arranged at an angle relative to the stator longitudinal axis, such that the tooth longitudinal axis of each carrier tooth with the stator longitudinal axis - which coincides with the rotor axis - forms an angle.
  • This angle can be, for example, up to 30 °, but preferably about 10 ° or slightly underneath, with basically all intermediate angle values come into consideration.
  • About the angled arrangement of the support teeth helical teeth is achieved, with the result that a smoothing or homogenization in the output torque curve is achieved.
  • the electrical connection between adjacent coils in the stator ring and the electrical power supply is preferably carried out by means of a contact ring, which is a carrier of electrical contact elements, via which the coil wire of a coil to be electrically connected to the coil wire of another coil.
  • the contact ring allows in a simple mechanical way the electrical connection to each coil, so that can be dispensed with a soldering or welding technology.
  • the latching elements are preferably arranged adjacent to an axial end face of the carrier teeth, in particular adjacent to the free coil wire ends, via which the coils are electrically connected to the contact ring.
  • the locking elements can also be arranged on the opposite end face or axially in the middle of the carrier teeth.
  • Detent position can occur, per carrier tooth at least two individual locking elements are provided as part of a respective latching connection to the adjacent support tooth left and right.
  • stator is composed of individual carrier teeth, each with a coil, which by means of a contact ring and arranged thereon
  • Insulation displacement terminals are electrically connected to each other, as well as arranged on an end side, the output side bearing plate, which is directly connected to the motor housing of the electric motor, 2 shows a detail of an electronic assembly which is seated on a further bearing plate, which is arranged on the opposite end face of the electric motor,
  • FIG. 3 is a side view of the stator of the electric motor, which consists of a plurality of circumferentially distributed carrier teeth, which are arranged at an angle relative to the stator longitudinal axis,
  • 4a is a perspective detail view of a carrier tooth with a coil
  • 4b is a side view of a carrier tooth with coil
  • FIG. 6 is a plan view of a carrier tooth with coil, wherein the wire ends of the coil winding are each guided over an introduced into the front side of the carrier tooth receiving pocket,
  • FIG. 7 is a perspective view of the mechanical connection between adjacent carrier teeth realized via clips
  • FIG. 9 is a perspective view of a contact ring, consisting of a plurality of individual rings, each having a plurality of insulation displacement terminals, which form contact elements,
  • 1 1 is a perspective view from above of the mounted electric motor
  • FIG. 12 shows a section through the electric motor with a magnet inserted into the end face of the rotor shaft as part of a rotor position sensor system.
  • the electric motor 1 is designed as an internal rotor motor and comprises a rotor shaft 2, which is the carrier of a rotor stack 3.
  • the rotor shaft 2 including the rotor core 3 is in the assembled state in a stator 4, which is a carrier of several distributed over the circumference coils, which is electrically contacted and supplied with power via an axially arranged on the stator contact ring 5 and disposed thereon insulation displacement terminals 6 become.
  • a first bearing plate 7 (A bearing plate), which receives a bearing part 8 for the rotor shaft 2.
  • the bearing part 9 On the A-bearing plate 7 axially opposite end face is another bearing part 9 for supporting the rotor shaft 2.
  • the bearing part 9 is in the assembled state in a further bearing plate 1 1 (B-bearing plate, shown in Fig. 2) added.
  • the bearing plate 1 1 is also a carrier of electronic components 12, via which the control or regulation of the electric motor 1 takes place.
  • the A-bearing plate 7 and the B-bearing plate 1 1 grasp the motor housing 10 at opposite axial end faces and are directly or directly connected to the motor housing 10.
  • it is an exclusive connection of each bearing plate 7, 1 1 with the motor housing 10, so that beyond this connection, no further connection measures such as tie rods between the bearing plates or the like are required.
  • the connection is made by welding between the end face of the motor housing 10 and the bearing plates 7 and 1 1 or by shrinking. In any case, a tight connection is achieved, so that can be dispensed with the use of additional sealing elements between the bearing plates and the motor housing.
  • Another advantage lies in the improved stiffness that comes on
  • the contact ring 5 with the cutting elements 6 designed as contact elements is suitably held as well as the bearing part 9 of the B-bearing plate 1 1.
  • the stator 4 is made of a plurality of over the stator 4
  • each carrier tooth 13 Distributed circumferentially arranged, individual carrier teeth 13, each carrier a coil 17.
  • the carrier teeth 13 close with the stator longitudinal axis 14, which also forms the longitudinal axis of the electric motor, (FIG. 1), an angle ⁇ .
  • a tooth longitudinal axis 15 is entered through a support tooth 13, wherein the side edges of each support tooth 13 extend parallel to the tooth longitudinal axis 15.
  • the angle ⁇ under which each support tooth 13 is aligned at an angle relative to the stator longitudinal axis 14, in the exemplary embodiment in an angular range of less than 10 °, in particular about 8 °.
  • the angle ⁇ can advantageously also assume value ranges greater than 10 °, for example up to 30 °, or even significantly smaller values than 10 °. Basically, ranges of values in arbitrary gradations between approximately 1 ° and approximately 30 ° or possibly even beyond should be possible.
  • the angular arrangement of the carrier teeth 13 relative to the stator longitudinal axis 14 has the advantage that thereby a smoothing or homogenization of the
  • Torque curve can be achieved. Since a magnetic field is generated in each individual coil, each coil makes a contribution to the generation of torque, wherein due to the discrete number and positioning of the coils 17 seen over the circumference of the stator 4 is basically in a straight-aligned positioning of carrier teeth and Spools a rundown
  • Torque curve sets By the proposed inclination of the carrier teeth of the non-round torque curve is smoothed.
  • Each carrier tooth 13 has an end section 16 into which the coil wire edges 17 a and 17 b are received in cuts 18. About the coil wire 17a and 17b, the electrical contact between the insulation displacement terminals 6 takes place on the contact ring 5 (FIG. 1).
  • each support tooth 13 is aligned coaxially or axially parallel to the stator longitudinal axis 14, so that each end portion 16 with the angularly oriented tooth base body 19 of each support tooth 13 also includes an angle ⁇ . This facilitates the axial placement or insertion of the insulation displacement terminals 6, which are held on the contact ring 5, on the coil wire ends 17a and 17b of each coil 17th
  • FIGS. 4a, 4b, 5 and 6 each show a carrier tooth 13, which forms a single stator element, in a single representation. 4a and 4b it can be seen that the coil 17 is wound around the base body 19 of the carrier tooth 13 and that the free coil wire ends 17a and 17b in the region of the end portion 16 which is integrally formed with the base body 19, through the cuts 18 in End portion 16 are guided.
  • the tooth base body 19 is formed in cross-section double-T-shaped, so that lateral boundaries for the coil 17 are formed and the coil wire is securely held on the tooth base body 19.
  • the surface of the tooth base body 19, which is formed as a laminated core is encapsulated with a plastic casing 20, whereby the coil 17 is electrically insulated from the base body 19.
  • the remaining areas of the tooth base 19 have no plastic coating.
  • two parallel, mutually staggered receiving pockets 21 are introduced into the upper end face of the end portion 16, over which the coil wire ends 17 a and 17 b are guided.
  • the cuts 18, in which the coil wire ends 17 a, 17 b are inserted, are introduced into the receiving pockets 21 defining walls.
  • the receiving pockets 21 serve firstly to receive a chip (bauble), which during the process of Bonding process can occur with the insulation displacement terminals on the contact ring by shearing.
  • the receiving pockets 21 serve to receive the axially projecting part of the insulation displacement terminals, whereby a compact design is achieved in the axial direction.
  • connection between immediately adjacent carrier teeth 13 is shown.
  • the connection is preferably made exclusively by mechanical means using latching elements, which are designed in the embodiment as a clip connection 22.
  • Each clip connection 22 comprises two latching elements, which are each arranged on a carrier tooth 13 and designed to be complementary to each other.
  • this is a Klipsvorsprung 23 on a first carrier tooth 13 and an associated, complementarily shaped KrouusEnglishung 24 on the immediately adjacent carrier tooth 13.
  • the Klipsvorsprung 23 is executed ball or teilku- gelförmig or cylindrical, accordingly, the Krouusnaturalung
  • the elements of the clip connection consist of a material with sufficient elasticity and / or the clip elements have a relatively thin-walled construction or have a thin-walled section connected to the respective carrier tooth 13. It is thus possible, for example, to manufacture the clip elements of the clip connection 22 from a plastic material by molding the clip elements directly onto each carrier tooth. But it is also possible a version made of metal.
  • Figures 9 and 10 relate to the contact ring 5, which is carrier of the insulation displacement terminals 6, electrically connected to one another via the coils of different carrier teeth and supplied with current.
  • the contact ring 5 consists of a plurality of individual rings 25, which are each carrier of the insulation displacement terminals 6 and which are axially stacked. Between each two axially adjacent individual rings 25 is a separating ring 27. Axial at the bottom is a base ring 26 as a carrier of all individual rings 25 and separating rings 27th By combining different individual rings 25, on each of which insulation displacement terminals 6 are arranged, a desired interconnection between the various coils of the stator can be achieved.
  • Bearing plate 11 which is carrier of the electronic components 12 (Fig. 2), only indicated schematically.
  • the contact ring 5 with the insulation displacement terminals 6 is placed on the front side of the stator for electrical connection with the coils on each support tooth of the stator.
  • Axially protruding contact elements 28 for the electrical connection to the electronics or the power supply are arranged axially on the contact ring 5 on the side opposite the insulation displacement terminals 6.
  • a magnetic element 29 is inserted into the axial end face of the rotor shaft 2 on the side facing the contact ring 5. This is preferably located in a recess in the end face of the rotor shaft. 2
  • the magnetic element 29 is part of a rotor position sensor via which the current rotor position of the rotor shaft 2 can be determined.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un stator dans un moteur électrique, qui présente une pluralité d'éléments individuels de stator répartis sur la périphérie et formant des dents supports. Chaque dent support est munie d'une bobine enroulée et des éléments d'arrêt sont placés sur les dents supports pour la liaison mécanique des dents supports entre elles.
EP09737408A 2008-12-11 2009-10-16 Stator dans un moteur électrique Withdrawn EP2377229A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810054523 DE102008054523A1 (de) 2008-12-11 2008-12-11 Stator in einem Elektromotor
PCT/EP2009/063537 WO2010066492A2 (fr) 2008-12-11 2009-10-16 Stator dans un moteur électrique

Publications (1)

Publication Number Publication Date
EP2377229A2 true EP2377229A2 (fr) 2011-10-19

Family

ID=42168270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09737408A Withdrawn EP2377229A2 (fr) 2008-12-11 2009-10-16 Stator dans un moteur électrique

Country Status (3)

Country Link
EP (1) EP2377229A2 (fr)
DE (1) DE102008054523A1 (fr)
WO (1) WO2010066492A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012106471A1 (de) 2012-07-18 2014-02-06 Ebm-Papst Mulfingen Gmbh & Co. Kg Verschaltete Stator-Anordnung eines Elektromotors, Verschaltungseinrichtung sowie Verwendung eines Flachsteckers darin
DE102016224542A1 (de) 2016-12-08 2018-06-14 Bayerische Motoren Werke Aktiengesellschaft Schaltring für einen Stator einer elektrischen Rotationsmaschine
DE102016225504A1 (de) 2016-12-19 2018-06-21 Bayerische Motoren Werke Aktiengesellschaft Schaltring für einen Stator einer elektrischen Rotationsmaschine
DE102017206845A1 (de) * 2017-04-24 2018-10-25 Robert Bosch Gmbh Stator für einen Elektromotor
DE102017216084A1 (de) 2017-09-12 2019-03-14 Robert Bosch Gmbh Stator für eine elektrische Maschine, eine elektrische Maschine und Verfahren zum Herstellen eines solchen Stators
DE102018215787A1 (de) * 2018-09-18 2020-03-19 Robert Bosch Gmbh Stator für eine elektrische Maschine, eine elektrische Maschine und Verfahren zum Herstellen einer elektrischen Maschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006017081A1 (de) * 2005-09-21 2007-03-22 Temic Automotive Electric Motors Gmbh Stator für einen Elektromotor und Verfahren zur Herstellung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3680482B2 (ja) * 1997-03-28 2005-08-10 松下電器産業株式会社 電動機の固定子構成部材、電動機の固定子、電動機の製造方法
JPH1189128A (ja) * 1997-09-12 1999-03-30 Toshiba Corp 電動機の固定子およびその製造方法
KR100595552B1 (ko) * 2004-03-31 2006-07-03 엘지전자 주식회사 연결형 보빈, 이를 구비한 모터의 고정자 및 그 제조방법
JP4649951B2 (ja) 2004-10-28 2011-03-16 日本電産株式会社 モータおよび電機子の製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006017081A1 (de) * 2005-09-21 2007-03-22 Temic Automotive Electric Motors Gmbh Stator für einen Elektromotor und Verfahren zur Herstellung

Also Published As

Publication number Publication date
WO2010066492A3 (fr) 2010-12-09
DE102008054523A1 (de) 2010-06-17
WO2010066492A2 (fr) 2010-06-17

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