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WO2010066493A2 - Stator dans un moteur électrique - Google Patents

Stator dans un moteur électrique Download PDF

Info

Publication number
WO2010066493A2
WO2010066493A2 PCT/EP2009/063542 EP2009063542W WO2010066493A2 WO 2010066493 A2 WO2010066493 A2 WO 2010066493A2 EP 2009063542 W EP2009063542 W EP 2009063542W WO 2010066493 A2 WO2010066493 A2 WO 2010066493A2
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
stator
coil
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.)
Ceased
Application number
PCT/EP2009/063542
Other languages
German (de)
English (en)
Other versions
WO2010066493A3 (fr
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 WO2010066493A2 publication Critical patent/WO2010066493A2/fr
Publication of WO2010066493A3 publication Critical patent/WO2010066493A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • 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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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

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 are carriers of a stator winding, via which a magnetic field is to be 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 to form an electric motor with simple design measures reliable.
  • the stator according to the invention is used in an electric motor, for example in a control or drive motor in motor vehicles. Applications are considered as a starter motor, steering motor or for operating an auxiliary unit such as a windshield wiper, a window regulator 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
  • Carrier of a wound coil is.
  • the various coils on the carrier teeth are at least partially electrically connected to each other and are energized to generate a magnetic field.
  • the electrical connection between the coils is effected by means of a contact ring, which is a carrier of electrical contact elements, via which the coil wire of one coil is electrically connected to the coil wire of another coil in the stator.
  • This embodiment has several advantages.
  • the contact ring and arranged on the contact ring contact elements can be easily made the electrical contact between the various coils, wherein the contact is preferably carried out exclusively in a mechanical manner by the contact elements are mechanically attached to the coil wires.
  • the contact is preferably carried out exclusively in a mechanical manner by the contact elements are mechanically attached to the coil wires.
  • the risk of short circuit in the inventive electrical connection using the contact ring is significantly reduced.
  • the electrical contact using the contact ring can be realized quickly and without additional energy input only in the mechanical way, whereby the assembly time is shortened and the assembly is considerably simplified.
  • Another advantage is the fact that due to the mechanical connection and the unnecessary energy input, the coil wire ends do not have to be stripped and not tinned. This results in a significant cost advantage.
  • the contact elements which are held on the contact ring, designed as clamping elements, in particular as insulation displacement terminals.
  • insulation displacement terminals are a durable mechanical, electrically conductive connection to the coil wire ends in a simple manner.
  • the insulation displacement terminals with a U- or V-shaped
  • At least one receiving pocket is formed on the carrier teeth, into which the contact element can be inserted. It may be expedient to assign a receiving pocket to the two coil wire ends per carrier tooth, wherein it may also be sufficient to provide a common receiving pocket for both coil wire ends.
  • the receiving pocket serves, on the one hand, for the contact element to protrude at least partially into the receiving pocket in the assembly position, thereby realizing a space-saving design. Furthermore, the receiving pocket serves to receive a possibly resulting in the connection between the coil wire ends and the contact elements spans (tinsel), which is sheared off from the coil wire ends. This chip is received in the receiving pocket and therefore can not lead to a short circuit.
  • the wire ends of the coil wire are placed over the receiving pocket and are acted upon in this position by the contact element, which has the advantage that a possibly sheared chip falls into the receiving pocket immediately below and also a portion of the contact element inserted directly into the receiving pocket becomes.
  • the contact ring is preferably pushed axially onto the carrier teeth, which are carriers of the coil. Accordingly, the receiving pockets are introduced into the axial end face of the carrier teeth.
  • the axial connection is preferably carried out without additional rotation of the contact ring, but if necessary, an additional rotation in the sense of a bayonet closure is possible.
  • the carrier teeth with the coils preferably extend at an angle to the stator longitudinal axis, such that the tooth longitudinal axis of each carrier tooth forms an angle with the stator longitudinal axis.
  • This angle is preferably at most 30 °, in particular not more than 10 °.
  • Basically, however, is also an axially parallel alignment of the carrier teeth to the stator longitudinal axis, but the angular orientation has the advantage that a homogenization of the torque curve per revolution of the rotor shaft is achieved, which due to the helical gearing by an overlap or Overlapping between the drive torques occurring per carrier tooth is achieved.
  • the contact ring is divided into at least two individual rings, which are each carriers of contact elements.
  • Each individual ring with the associated contact elements electrically connects certain coils. In the assembled state, a desired interconnection between the coils is achieved in this way.
  • ring segments which extend only Ü over a limited angular range and are carriers of contact elements.
  • two or more such ring segments per level may be provided, whereas in the case of several individual rings these are arranged axially one behind the other.
  • stator is composed of individual carrier teeth, each with a coil which are electrically connected to each other using a contact ring and disposed thereon insulation displacement terminals, as well as arranged on a front side, output side bearing plate, the immediacy is connected to the motor housing of the electric motor,
  • FIG. 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
  • 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. 8 is an enlarged view of realized via a clip connection
  • 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 front side of the rotor shaft as part of a rotor position sensor system.
  • FIG. 1 the components of an electric motor 1 are shown in exploded view.
  • 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 a
  • the rotor core 3 is in the assembled state in a stator 4, which is the carrier of several distributed over the circumference coils, which are electrically contacted and supplied with power via an axially arranged on the stator contact ring 5 and disposed thereon insulation displacement terminals 6.
  • a first bearing plate 7 On the output side of the electric motor is a first bearing plate 7 (A-
  • Bearing plate which receives a bearing part 8 for the rotor shaft 2.
  • the A-bearing plate 7 is fixedly connected to a motor housing 10 which receives the stator 4 including the rotor shaft 2.
  • A-bearing plate 7 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 11 (B-bearing plate, shown in Fig. 2) added.
  • the bearing plate 11 is at the same time 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 is the improved stiffness, which is increased due to the direct connection of bearing plates and motor housing. The improved stiffness also has a positive influence on the torque curve.
  • the stator 4 consists of a multiplicity of individual support teeth 13, which are distributed over the circumference and which each support 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 with respect to the stator longitudinal axis 14 has the advantage that a smoothing or equalization of the torque curve can be achieved thereby. Since a magnetic field is generated in each individual coil, each coil makes a contribution to the generation of torque, wherein seen due to the discrete number and positioning of the coils 17 over the circumference of the stator 4 in principle in a rectilinear positioning of carrier teeth and coils sets unround torque curve. By the proposed inclination of the carrier teeth of the non-round torque curve is smoothed.
  • Each carrier tooth 13 has an end portion 16 into which the coil wire ends 17a and 17b are received in cuts 18. Via the coil wire ends 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 carrier 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 on the one hand for receiving a chip (baubles), which can arise during the connection process with the insulation displacement contacts 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.
  • FIGs 7 and 8 the connection between immediately adjacent carrier teeth 13 is shown.
  • 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
  • Bearing plate 1 which is carrier of the electronic components 12 (FIG. 2), only schematically is indicated.
  • 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.
  • 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 dont chacune est munie d'une bobine. La liaison électrique entre les bobines se fait au moyen d'une bague de contact qui porte des éléments de contact électriques.
PCT/EP2009/063542 2008-12-11 2009-10-16 Stator dans un moteur électrique Ceased WO2010066493A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810054520 DE102008054520A1 (de) 2008-12-11 2008-12-11 Stator in einem Elektromotor
DE102008054520.1 2008-12-11

Publications (2)

Publication Number Publication Date
WO2010066493A2 true WO2010066493A2 (fr) 2010-06-17
WO2010066493A3 WO2010066493A3 (fr) 2011-01-06

Family

ID=42168269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/063542 Ceased WO2010066493A2 (fr) 2008-12-11 2009-10-16 Stator dans un moteur électrique

Country Status (2)

Country Link
DE (1) DE102008054520A1 (fr)
WO (1) WO2010066493A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103356135A (zh) * 2012-04-10 2013-10-23 乐金电子(天津)电器有限公司 吸尘器的电机圈结构
WO2019110420A1 (fr) * 2017-12-06 2019-06-13 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Moteur électrique ainsi qu'unité de branchement associée

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130200742A1 (en) 2012-02-08 2013-08-08 Asmo Co., Ltd. Stator, brushless motor, stator manufacturing method
DE102015226416A1 (de) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Elektrische Maschine
CN113615047B (zh) 2019-03-27 2022-05-06 三菱电机株式会社 定子及电动机
DE102020200294A1 (de) * 2020-01-13 2021-07-15 Robert Bosch Gesellschaft mit beschränkter Haftung Stator für eine elektrische Maschine, eine elektrische Maschine und Verfahren zum Herstellen eines solchen Stators
DE102021214766A1 (de) 2021-12-21 2023-06-22 Robert Bosch Gesellschaft mit beschränkter Haftung Stator für eine elektrische Maschine, eine elektrische Maschine und Verfahren zum Herstellen eines solchen Stators
DE102023207689A1 (de) 2023-08-10 2025-02-13 Robert Bosch Gesellschaft mit beschränkter Haftung Primärteil mit anschlusseinrichtung für eine elektrische maschine und verfahren zum herstellen eines solchen pimärteils

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1933910A1 (de) * 1969-07-03 1971-01-07 Siemens Ag Spulentraeger fuer Schwingspulen
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
DE10152006B4 (de) * 2001-10-22 2011-06-01 Zf Sachs Ag Stator für eine elektrische Maschine
DE50107310D1 (de) * 2001-12-23 2005-10-06 Grundfos As Stator für einen Elektromotor
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103356135A (zh) * 2012-04-10 2013-10-23 乐金电子(天津)电器有限公司 吸尘器的电机圈结构
WO2019110420A1 (fr) * 2017-12-06 2019-06-13 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Moteur électrique ainsi qu'unité de branchement associée
US20210057951A1 (en) * 2017-12-06 2021-02-25 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Electric motor and switching unit therefor
US11936262B2 (en) 2017-12-06 2024-03-19 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Electric motor and switching unit therefor

Also Published As

Publication number Publication date
DE102008054520A1 (de) 2010-06-17
WO2010066493A3 (fr) 2011-01-06

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