WO2009013312A2 - Machine électrique - Google Patents

Machine électrique Download PDF

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Publication number
WO2009013312A2
WO2009013312A2 PCT/EP2008/059654 EP2008059654W WO2009013312A2 WO 2009013312 A2 WO2009013312 A2 WO 2009013312A2 EP 2008059654 W EP2008059654 W EP 2008059654W WO 2009013312 A2 WO2009013312 A2 WO 2009013312A2
Authority
WO
WIPO (PCT)
Prior art keywords
winding
strand
plate
electrical machine
connection
Prior art date
Application number
PCT/EP2008/059654
Other languages
German (de)
English (en)
Other versions
WO2009013312A3 (fr
Inventor
Klaus Herbold
Christoph Schwarzkopf
Helmut Kreuzer
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 WO2009013312A2 publication Critical patent/WO2009013312A2/fr
Publication of WO2009013312A3 publication Critical patent/WO2009013312A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H02K11/049—Rectifiers associated with stationary parts, e.g. stator cores
    • H02K11/05—Rectifiers associated with casings, enclosures or brackets
    • 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
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Definitions

  • the invention is based on an electrical machine, in particular a generator, according to the preamble of claim 1.
  • the rectifier diodes of the rectifier are divided into a plate-like positive heat sink and a plate-shaped negative heat sink and the connection plate, also called circuit board or printed circuit board, disposed between the plus and minus heatsink.
  • the said, sandwiched stacked components are connected together and attached as so-called.
  • Rectifier unit from the outside to the slip ring side bearing plate.
  • the rectifier diodes are connected to the
  • Diode housing which form the one terminal of the rectifier diodes used.
  • the other diode connection form so-called head wires that emerge from the rectifier diodes.
  • the positive heat sink and the minus heat sink lie with a connection plate arranged therebetween, and the head wires penetrate opposite holes in the respective other heat sink.
  • a plastic injection molded connection plate is a
  • Inserted lead frame and implemented in this conductor tracks which are provided with contact tabs for establishing the connection between the diode head wires and with terminal lugs for establishing the connection with the six strand beginnings and strand ends of the winding strands of the three-phase stator winding.
  • the contact lugs and terminal lugs are at right angles to the connection plate.
  • quiver in the form of hollow tubes are provided, which are integrally formed on the terminal plate and extending from the terminal plate in the direction of stator core and pass through openings in the bearing plate. Through this quiver coming from the winding strands connecting wires are guided.
  • Each quiver also contains a contact lug or a terminal lug of the stamped grid. The terminal ends of the contact tabs and terminal lugs are hammer-like, so that it is possible to bend the terminal ends to a U-shape.
  • two diode head wires or diode head wire and connecting wire of the winding strands or the connecting wires of the winding strands to be combined to the star point are inserted into the U end of the contact lug or connecting lug.
  • the U-shape is compressed, ie crimped, and then preferably welded in the resistance welding process.
  • the erf ⁇ ndungsdorfe electrical machine with the features of claim 1 has the advantage that in a five-phase stator winding, which places high demands on installation space and winding stiffness, reliable, electrical connections of the individual
  • Winding strands of the stator winding can be achieved in a cost-effective, automatable manufacturing process.
  • the wiring of the winding strands is made at the already required interfaces to the rectifier by twisting the beginnings and ends of the winding strands, and minimizes the number of connections to be made by the self-welding with the terminal lugs of the rectifier. Due to the twisting, the positions of the winding terminals with respect to the rectifier terminals are fixed in position-safe manner and produced by soft transitions of the wire bends favorable conditions for the vibration load during operation without additional components.
  • the prefabricated stand can also be transported, stored and installed without damage during the manufacturing process, as the position and orientation of the winding connections are ensured by the twisting of the strand ends and strand starts.
  • connection lugs and winding connections are compatible with each other and are easily accessible for welding tongs, both in radial and in axial arrangement.
  • the defined position of winding connections of the stator winding and terminal lugs of the connection plate guarantees a high-quality weld and avoids additional
  • the connection of several wires of the winding strands within a weld can be done with or without tinning the wire ends.
  • the electric machine according to the invention can be realized particularly advantageously with a stand whose stator core has 60 or 80 axial grooves for receiving the stator winding and whose five-phase stator winding is made of edgewise rolled endless lamellae or 360 ° full lamellae or lamellar segments or in flat-pack technology.
  • the winding connections resulting from the twisting of the strand ends and beginning are either distributed, for example with a circumferential spacing of 30 ° to 50 °, or are led out centrally in an angular window of eg 30 ° to 90 °.
  • the winding strands of the stator winding are designed as a wave or loop winding with 6 to 30 conductors or wires per groove.
  • the winding wire preferably has a diameter of 0.5 to 2.0 mm.
  • FIG. 1 shows a longitudinal section of an electric machine with stator and claw-pole rotor, shown schematically,
  • FIG. 2 is a circuit diagram of a five-phase stator winding of the stator of the electric machine in Fig. 1 with a rectifier connected,
  • FIG. 3 is a perspective, schematic representation of a stator segment of the
  • FIG. 4 shows a detail of a perspective view of a segment of the stator of the electric machine in FIG. 1 with mounted, brush-side end shield,
  • FIG. 5 shows a similar representation as in FIG. 4 with rectifier unit mounted on the end plate
  • Fig. 6 is a same view as in Fig. 5 with a welding guns in the axial
  • FIG. 7 shows a detail of a section along the line VII - VII in Fig. 5 after completion of the welding operation in Fig. 6,
  • FIG. 8 a detail of a rectifier unit with a modification of FIG
  • Insulated quiver and terminal lug design Insulated quiver and terminal lug design.
  • the electrical machine shown schematically in longitudinal section in FIG. 1 with claw-pole rotor 11 is used in particular as a synchronous generator with regulated electrical excitation of the claw-pole rotor 11 in motor vehicles.
  • the electric machine has in a known manner a stand 12 with a hollow cylindrical, designed as a stator core 121, laminated stator iron and an in-line stator or Ankernuten the St Sbleckpers 121 inserted, designed as a five-phase winding stator or armature winding 13, the winding heads 131 at both ends of the stator core 121 project from this.
  • the stator core 121 is disposed between two axially spaced apart bearing plates 14, which are clamped together by means of screws 29.
  • the upper bearing plate 14 in FIG. 1 is referred to below as slip ring side bearing plate and the lower bearing plate 15 in FIG. 1 on the drive side bearing plate.
  • a pivot bearing 16 is centrally arranged.
  • a rotor shaft 17 of the claw pole 11 is added.
  • two mutually axially spaced, identically formed Polator 18 are fixed in a known manner, between which a seated on the rotor shaft 17 iron core 19 is arranged.
  • a Feldregerspule 20 which is wound annularly and with its two coil ends to a beyond the slip ring side bearing plate 14 mounted on the rotor shaft 17 slip ring pair, consisting of the slip rings 21 and 22, is connected.
  • a brush holder 23, which rests with its brushes 24, 25 on the slip rings 21, 22, provides for the power supply of
  • Each flywheel 18 has an equal number of axially over the field exciting coil 20 cross-claw poles 181, the claw poles 181 of the opposite pole wheels 18 are telescoped together, so seen in the circumferential direction always a claw pole 181 of a flywheel 18 a claw pole 181 of another pole wheel 18 follows.
  • the claw poles 181 one and the same pole wheel 18 have the same polarity, so that always alternates over the circumference of the claw pole 11 a north pole with a south pole.
  • the outer surfaces of the claw poles 181, together with the cylindrical inner surface of the stator core 121, define the working air gap 26 of the machine.
  • the stator winding 13 has five winding branches 27, each of which is designed as a loop or wave winding.
  • winding head 131 which is facing the slip ring-side end plate 14 and is referred to in the following slip ring side winding head 131, respectively the strand beginning A and the strand ends E of the five winding strands 27 of the stator winding 13 are led out, namely - as this is outlined in Fig. 3 - the strand beginning A of the individual winding strands 27 inside the winding head 131 and the strand ends E outside led out the winding head 131.
  • each winding strand 271 its strand end E lies on an outer circle and its strand beginning A on an inner circle with a smaller radius relative to the outer circle.
  • the strand ends E of a winding strand 27 are bent in the circumferential direction and bent to the likewise bent strand beginning A of the following winding strand 27.
  • the adjoining strand ends E and strand starts A form a winding connection 28.
  • strand end E and strand beginning A are twisted together up to the free end section 281 and protrude axially from the slip ring end winding 131.
  • each winding strand 27 is wound with two parallel winding wires 271, 272, so that in each case two winding wires 271, 272 adjoin one another at the strand beginning A and strand end E.
  • the winding wire pairs of strand beginning A and strand end E are twisted together to form the winding connection 28.
  • the five-phase stator winding is connected to a rectifier 30, consisting of ten rectifier diodes 31, at whose output the desired DC voltage can be removed.
  • the rectifier diodes 31 are distributed to a so-called. Minuskühlmaschine 32 and a plus heat sink 33.
  • a connection plate 34 is arranged made of plastic (Fig. 7). In the interior of the connection plate 34 31 leading printed conductors are integrated with the rectifier diodes, which with on the top of the
  • connection plate 34 bent at right angles terminal lugs 35 (Fig. 2 and 6) for connecting the stator winding 13 are connected.
  • the sandwich-type construction of minus heat sink 32, connection plate 34 and plus heat sink 33 forms the so-called rectifier unit 40, which is located on the outside attached to the slip ring side bearing plate 14 and is covered by a protective cap 36 (Fig. 1).
  • Protective cap 36 and end shields 14, 15 are provided with air passage slots.
  • openings 37 (FIGS. 4 to 7) along the periphery of the sliding ring-side end shield 14, which are arranged such that they are aligned with the winding terminals 28 projecting axially from the slip ring end winding head 131.
  • the openings 37 are for this purpose on a divider circuit with the same radius as the divider circuit of the five winding terminals 28 and have an equal pitch as the winding terminals 28.
  • openings are arranged in the same way on a pitch circle with the same radius, which have an equal pitch as the openings 37 in the bearing plate 14 and thus aligned with positionally correct placement of the rectifier unit 40 on the bearing plate 14 with the openings 37.
  • Each opening 37 is enclosed by an insulating quiver 38, which is integrally molded onto the connection plate 34 and penetrates the associated opening 37 when the rectifier unit 40 is seated on the end shield 14 (FIG. 7).
  • the former When placing the slip ring side bearing plate 14 on the stator core 121, the former is aligned so that the winding terminals 28 pass through the openings 37, as shown for a winding terminal 28 in Fig. 4.
  • the rectifier unit 40 of minus heat sink 32 and plus heat sink 33 with rectifier diodes 31 and terminal plate 34 on the slip ring side bearing plate 14 the winding terminals 28 pass with their twisted sections through the Isolierköcher 38 and protrude with their untwisted end portions 281 of the Isolierköchern 38 out.
  • the terminal lugs 35 of the rectifier unit 40 are designed and arranged such that they lie flush with the surface of the flag ends of the projecting from the Isoliergrochern 38, untwisted end portions 281 of the winding terminals 28 (Fig. 5). Now, as shown in Fig. 6, welding guns 39 attached to the untwisted end portions 281 and the adjacent portions of the terminal lugs 35 and made by a resistance welding process, a welded joint between each of a winding terminal 28 and a terminal lug 35 which electrically and mechanically from high quality.
  • Fig. 7 shows a section of a section through rectifier unit 40 and schleifring workedem winding head 131, in which the welded joint 41 of a winding terminal 28 of St Swicklung 13 is indicated with a terminal lug 35 of the rectifier unit 40 after the resistance welding, wherein the welding is done with tinned ends.
  • Fig. 8 shows an alternative embodiment of the terminal lugs 35 '.
  • Whose ends in contact with the untwisted end portions 281 of the winding terminals 28 are U-shaped and take between their U-legs 351 and 352 respectively the untwisted end portions 281 of a winding terminal 28 in the embodiment four winding wires 271, 272, which are lined up side by side , on.
  • the welding guns 39 are attached to the two U-legs 351, 352 of the terminal lugs 35 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Synchronous Machinery (AREA)

Abstract

La présente invention concerne une machine électrique, et plus particulièrement un générateur. Cette machine comprend un stator (12) comportant un noyau statorique feuilleté (121) contraint entre deux flasques (14, 15), noyau dans lequel est reçu un enroulement statorique multiphase (13) dont les faisceaux d'enroulement définissent chacun un début de faisceau (A) et une fin de faisceau (E). Le générateur comprend également un redresseur constitué de diodes de redressement ainsi qu'une carte de raccordement montée sur un flasque (14) pour l'établissement des liaisons électriques entre le redresseur (30) et l'enroulement statorique (13) et sur laquelle on dispose de barrettes de raccordement desservant les diodes de redressement. L'invention propose ainsi la réalisation d'un enroulement statorique pentaphase (13), comportant entre les différents faisceaux d'enroulement et le redresseur des liaisons électriques fiables et se prêtant à un procédé de fabrication économique automatisable. À cet effet, la fin de faisceau (E) d'un premier faisceau d'enroulement et le début de faisceau (A) du faisceau d'enroulement suivant sont raccordés entre eux à une borne d'enroulement (28) par des segments toronnés. En outre, les bornes d'enroulement (28) aboutissent chacune à une barrette de raccordement de la carte de raccordement (34) au travers d'orifices (37, 38) ménagés dans le flasque (14) et la carte de raccordement (34), et alignés les uns avec les autres, les bornes étant soudées sur la barrette de raccordement.
PCT/EP2008/059654 2007-07-24 2008-07-23 Machine électrique WO2009013312A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007034325.8 2007-07-24
DE102007034325A DE102007034325A1 (de) 2007-07-24 2007-07-24 Elektrische Maschine

Publications (2)

Publication Number Publication Date
WO2009013312A2 true WO2009013312A2 (fr) 2009-01-29
WO2009013312A3 WO2009013312A3 (fr) 2009-09-17

Family

ID=40157110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/059654 WO2009013312A2 (fr) 2007-07-24 2008-07-23 Machine électrique

Country Status (2)

Country Link
DE (1) DE102007034325A1 (fr)
WO (1) WO2009013312A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009042567A1 (de) * 2009-09-17 2011-06-22 Robert Bosch GmbH, 70469 Kühleinrichtung in einer Gleichrichtereinrichtung einer elektrischen Maschine
DE102013225667A1 (de) * 2012-12-20 2014-06-26 Robert Bosch Gmbh Verfahren zum Verbinden von Anschlussdrähten einer Phasenwicklung einer Ständerwicklung für eine elektrische Maschine sowie elektrische Maschine
CN107996016B (zh) 2015-08-06 2020-01-17 三菱电机株式会社 车用旋转电机
FR3040837B1 (fr) * 2015-09-03 2021-05-21 Valeo Systemes De Controle Moteur Unite de controle destinee a controler une machine electrique
DE102015222642A1 (de) * 2015-11-17 2017-05-18 Robert Bosch Gmbh Elektromotor
DE102016113276A1 (de) * 2016-07-19 2018-01-25 Jenoptik Power Systems Gmbh Elektrische Maschine und Schienenfahrzeug
FR3062753A1 (fr) * 2017-02-03 2018-08-10 Valeo Equipements Electriques Moteur Machine electrique tournante munie d'elements d'obturation limitant un rebouclage d'air chaud

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3345272A1 (de) * 1983-12-14 1985-07-04 Siemens AG, 1000 Berlin und 8000 München Ankerwicklung fuer eine stromrichtergespeiste elektrische drehfeldmaschine
US4606000A (en) * 1985-03-27 1986-08-12 General Motors Corporation Bridge rectifier
DE3728081A1 (de) * 1987-08-22 1989-03-02 Bosch Gmbh Robert Gleichrichterlagereinrichtung
WO2003041243A1 (fr) * 2001-11-08 2003-05-15 Robert Bosch Gmbh Machine electrique, de preference, alternateur triphase de vehicules automobiles
US20030107287A1 (en) * 2001-12-11 2003-06-12 Mitsubishi Denki Kabushiki Kaisha Dynamoelectric machine
WO2005064769A1 (fr) * 2003-12-30 2005-07-14 Robert Bosch Gmbh Machine electrique et stator approprie

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005023363A1 (de) * 2005-05-20 2006-11-23 Robert Bosch Gmbh Fünfphasiger Generator
DE102006052111A1 (de) * 2006-11-06 2008-05-08 Robert Bosch Gmbh Elektrische Maschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3345272A1 (de) * 1983-12-14 1985-07-04 Siemens AG, 1000 Berlin und 8000 München Ankerwicklung fuer eine stromrichtergespeiste elektrische drehfeldmaschine
US4606000A (en) * 1985-03-27 1986-08-12 General Motors Corporation Bridge rectifier
DE3728081A1 (de) * 1987-08-22 1989-03-02 Bosch Gmbh Robert Gleichrichterlagereinrichtung
WO2003041243A1 (fr) * 2001-11-08 2003-05-15 Robert Bosch Gmbh Machine electrique, de preference, alternateur triphase de vehicules automobiles
US20030107287A1 (en) * 2001-12-11 2003-06-12 Mitsubishi Denki Kabushiki Kaisha Dynamoelectric machine
WO2005064769A1 (fr) * 2003-12-30 2005-07-14 Robert Bosch Gmbh Machine electrique et stator approprie

Also Published As

Publication number Publication date
WO2009013312A3 (fr) 2009-09-17
DE102007034325A1 (de) 2009-01-29

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