EP2946461A2 - Élément de contact pour un moteur électrique - Google Patents

Élément de contact pour un moteur électrique

Info

Publication number
EP2946461A2
EP2946461A2 EP13805326.9A EP13805326A EP2946461A2 EP 2946461 A2 EP2946461 A2 EP 2946461A2 EP 13805326 A EP13805326 A EP 13805326A EP 2946461 A2 EP2946461 A2 EP 2946461A2
Authority
EP
European Patent Office
Prior art keywords
contacting
winding
section
contacting portion
conductor
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Withdrawn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
EP13805326.9A
Other languages
German (de)
English (en)
Inventor
Thomas Devermann
Andreas Ewert
Jan Schlegel
Lukas Leitz
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 EP2946461A2 publication Critical patent/EP2946461A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/04—Connections between commutator segments and windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/022—Details for dynamo electric machines characterised by the materials used, e.g. ceramics
    • H01R39/025—Conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/32—Connections of conductor to commutator segment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/04—Connections between commutator segments and windings
    • H02K13/06—Resistive connections, e.g. by high-resistance chokes or by transistors

Definitions

  • the invention generally relates to a contacting element for an electrical machine, in particular in a motor vehicle.
  • Commutators are known as current inverters in electric motors, the commutators consisting of a thermosetting molding compound as carrier and lamellae of copper.
  • the lamellae serve both as an electrical contact surface to the current-carrying carbon brushes and to winding wires of a rotor winding, which are currently formed in most electrical machines made of copper.
  • the winding wires are installed in electrical machines such that they form a winding arrangement in order to be able to form a magnetic flux.
  • the electrical contact from the blade to the winding wire may be formed via a contacting hook provided at the end of the commutator blade. In an inner region of a justifyierhakens may be provided to improve the contacting a partial tinning. To make the contact, the end of a winding wire of the rotor winding in the
  • the winding wire can be crushed, thereby reducing its wire cross-section. Therefore, the wire cross section for the rotor winding in providing a constricting crimping of the winding wire to the contacting hook is chosen to be larger than would be necessary for the electrical properties of the electrical machine. This leads to limitations of the construction of the electric machine.
  • a contact element for an electrical contact in an electrical machine preferably in a motor vehicle, according to claim 1
  • a contacting element for providing an electrical contact to an electrical machine, in particular in a motor vehicle, comprising: a first formed from a first material
  • first contacting portion and the second contacting portion are connected by a multi-material connection.
  • One idea of the above contacting element is to provide electrical contact between a connection of the machine and a conductor to a winding arrangement in the interior of the electrical machine in such a way that a fabric-like or at least material-compatible contacting is provided from the contacting element to the winding arrangement.
  • the Kunststoffierelement provided as described allows a largely free choice of the winding material. Since a relatively large amount of winding material is required for the winding arrangement, it is possible to switch to a less expensive winding material without technical losses if the winding material used hitherto has become too expensive for economical use.
  • a contacting element is therefore understood in particular to mean a construction which provides an electrically conductive contact or an electrically conductive connection between a connection to the electrical machine and a winding arrangement of the electrical machine or a conductor to the winding arrangement.
  • a multi-substance compound in particular a compound which is formed from at least two different, conductive materials.
  • a contacting element which as described has a first contacting section made of a first material and a second contacting section connected thereto via a multi-material connection and made of a second material different from the first material, may be referred to as a multi-component system.
  • a first contacting section is to be understood here in particular as the section of the contacting element which is assigned to the winding arrangement.
  • the first contacting section is connected either directly to one end of a winding of the winding arrangement or to a conductor leading to the winding arrangement.
  • winding material is meant the material that makes up the conductive components of the winding assembly.
  • the first contacting portion may be designed as a commutator hook or slot.
  • the first material of the contacting element may be identical to the winding material.
  • the first material of the contacting element may be compatible with the winding material.
  • a second contacting section is to be understood as meaning, in particular, the section associated with the connection of the electrical machine.
  • the contacting element can be designed such that the winding-side contacting section is connected directly to the feed-side contacting section and thus the multi-substance compound is provided.
  • the contacting element can be designed such that the winding-side contacting section is connected indirectly to the feed-side contacting section via a contacting section providing the multi-material connection.
  • the winding material of the electrical machine is essentially formed from aluminum. Since aluminum is cheaper than copper, a total cost saving is provided in this way. It is considered to provide a conductor which electrically connects the first contacting portion of the contacting element with the winding material. Alternatively, it is provided that one end of a winding is electrically connected directly to the first contacting section of the contacting element.
  • the electric machine is one of a direct current motor, an EC motor, a generator and a transformer.
  • the contacting element will be provided on the commutator and provide electrical contact between a commutator blade and a line to the winding assembly.
  • the energy supply from the outside is then done in a conventional manner via a carbon brush, which grinds on the commutator and alternately has contact with one blade at a time when the commutator rotates.
  • the electrical machine is a transformer
  • the multi-material compound of the winding-side contacting portion with the feeding-side contacting portion may be replaced by one of TIG, TIG, MIG, MAG, resistance, frictional welding, laser welding, flux soldering and solderless solder jointing, as well as be provided with or without ultrasound support. In this way, a mechanically and thermally stable connection is provided between the winding-side contacting section and the feeding-side contacting section.
  • a contactor assembly comprising a contactor as described above and a conductor connecting the winding-side contacting portion to the winding assembly, wherein the conductor is formed of at least a portion of the winding-side contacting portion of two portions formed of different materials.
  • an electric machine in particular in a motor vehicle, is provided, wherein a contact between a power supply and a winding arrangement in the electric machine is formed by a contacting element as described above and / or by a contacting arrangement as described above.
  • a construction as described above can be demonstrated, for example, by disassembling the electrical machine and by grinding patterns as well as by suitable physical and chemical analyzes.
  • FIG. 1 shows a partial cross section through an electric machine M designed as a brushed DC motor.
  • the electric machine M has a housing 8 in which an armature A is held on a bearing 6 via a shaft 4 assigned to it. It is not shown that the shaft 4 is further held at its opposite end to a second bearing.
  • the electric machine M also has a commutator 3.
  • the commutator 3 comprises slats 5, which are contacted via carbon brushes 1 and 2.
  • the carbon brushes 1 and 2 touch lamellae 5 of a commutator 3 formed in lamellae and in this way establish electrical contact between a connection, not shown, and a winding arrangement, not shown, in this case an armature winding arrangement.
  • a contacting portion 7 provides contact between the blade and a conductor 15 leading to the winding assembly.
  • FIGS. 3a-3i show schematic representations of embodiments in which a winding-side conductor is fastened to a winding-side contacting section in the form of a commutator hook.
  • the winding-side contacting sections 13 will be, for example, commutator hooks 13.
  • the commutator hook 13 is formed of a section aligned with the commutator blade and resting on the commutator carrier, and a portion bent back at an angle from the commutator carrier to which one end of a conductor 15 leading to the coil assembly is attached.
  • a commutator hook may be formed by a first protruding beyond the commutator and then bent back lamella. Further, the end of the conductor 15 connected to the commutator hook can be bent by bending back the projecting portion the lamella be clamped such that it is held on the lamella providing a conductive connection.
  • an electrical connection can thus be created via the first contacting portion 13 to the conductor 15 and thus to the winding arrangement.
  • a winding-side or first contacting section 13 made of a winding material or of a material compatible with the winding material, which is referred to as the first material, is in electrical contact with a conductor 15 is, which is also made of the winding material and leads to a winding arrangement. It is contemplated that the winding assembly is formed entirely of the conductor 15.
  • FIG. 3c shows a contacting element 10 in which a first contacting section formed from a first material is connected directly to a second contacting section 11c formed from a second material.
  • the first Druckierabterrorism is connected via a multi-compound 16c with the second Druckierabterrorism 1 1 c.
  • the second contacting portion 11c is provided integrally with the contacting portion 17c.
  • the first contacting portion 13 has such an acute angle with the contacting portion 17c that a conductor 15 between the first contacting portion 13 and the contacting portion 17c can be jammed.
  • the multi-material compound 16c between the first contacting portion 13 and the contacting portion 17c may be made in any of the aforementioned manners.
  • the first contacting portion 13 is thus directly with the second
  • FIG. 3d shows a contacting element 10, in which a first contacting section 13 formed from a first material is indirectly connected to one of a second material formed Remodelierabêt 1 1 d is connected.
  • the first contacting portion 13 is directly connected to a contact portion 17 d and takes with this an acute angle, that a conductor 15 between the first contacting portion 13 and the contacting portion 17 d can be clamped.
  • the contacting portion 17d tapers stepwise in its longitudinal direction, as seen from the junction with the first contacting portion 13. In the stage, the second contacting portion 1 1 d.
  • the first contacting section 13 is thus indirectly connected to the second contacting section 11 d via the contacting section 17 d providing the multi-substance connection 16 d.
  • FIG. 3e shows a contacting element 10, which has a first contacting section 13 formed from a first material, which is formed on a contacting section 17e formed from the first material.
  • the first contacting portion 13 has such an acute angle with the contacting portion 17e that a conductor 15 between the first contacting portion 13 and the contacting portion 17e can be jammed.
  • the contacting section 17e has a recess into which a second contacting section 11e formed from a second material is embedded. Between the second devisierabêt 1 1 e and the Mixierabêt 17e a multi-compound 16e is created.
  • the first contacting section 13 is thus indirectly connected to the second contacting section 11f via the contacting section 17f providing the multi-material connection 16f.
  • FIG. 3g shows a contacting element 10 in which a first contacting section 13 formed from a first material is applied to a contacting section 17g formed from the first material.
  • Contacting portion 17g occupy each other at such an acute angle that a conductor 15 between the first contacting portion 13 and the contacting portion 17g can be clamped.
  • the contacting portion 17g is recessed in a step of a second contacting portion 11g formed in a stretching direction of the contacting portion 17g, as viewed from the first contacting portion 13, which is steppedly enlarged. Between the second Greierabites 1 1 g and the Greierabêt 17g a multi-compound 16g is created.
  • the first contacting section 13 is therefore indirectly connected to the second contacting section 11 g via the contacting section 17g providing the multi-substance connection 16g.
  • FIG. 3h shows a contacting element 10 in which a first contacting section 13 formed from a first material is fastened to a second contacting section 11 formed of a second material.
  • the first Druckierabterrorism 13 takes with the second Mixierabrough 1 1 h such an acute angle that between a see the first Mixierabêt 13 and the second Mixierabêt 1 1 h arranged conductor between the first Mixierabêt 13 and the second Druckierabrough 1 1 h are clamped can.
  • the first contacting portion 13 is directly connected to the second contacting portion 1 1 h via a multi-substance compound 16h.
  • a contacting portion 17h is identical to the second contacting portion 11h.
  • the first contacting portion 13 is thus directly with the second
  • FIG. 3i shows a contacting element 10, in which the first contacting section is formed from a section of a first material 13.2 and a section of a further material 13.1.
  • the first contacting portion 13 is formed on the side 13.2 formed of the first material with a material formed of the first material
  • Contacting portion 17i occupy such an acute angle that a conductor 15 interposed between the side 13.2 of the first contacting portion 13 and the contacting portion 17i formed from the first material can be jammed therebetween.
  • the contacting portion 17i is recessed in a recess of a second contacting portion 11a formed in a stepwise direction of the contacting portion 17i, as viewed from the first contacting portion 13, stepwisely widening from a second material.
  • the contacting portion i is connected to the contacting portion 17i via a multi-material compound 16i.
  • the first contacting section 13 is thus indirectly connected via its section formed from the first material 13.1 to the second contacting section 11 via the contacting section 17i providing the multi-substance compound 16i.
  • Figures 4a and 4b are schematic representations of embodiments in which the winding-side conductor is attached to a winding-side contacting portion in the form of a slot.
  • FIGS. 4a-4b are shown.
  • the slot is formed completely within the winding-side contacting section, so that in the manufacture of the contacting between the conductor 15 and the winding-side contacting section 14b, the conductor extends up to can be pushed through down without a multi-substance compound would arise.
  • the Kunststoffierabites 17'a and 17'b is connected directly in this embodiment with the feed side contacting portion 1 1 and thus forms a multi-compound 16 '.
  • FIGS. 5a-5d show schematic representations of four embodiments 10 "of a contacting element with feed-side contacting surface 11 and welded conductor 15.
  • a winding-side material is formed from winding material
  • the conductor 15 leading to the winding assembly is formed of the winding material and welded or soldered or conductively bonded to the winding-side contacting portion 18a.
  • FIG. 5 b shows, in a modification of the representation of FIG. 5 a, that the contacting surface 1 1 is formed only in a surface section of a winding-side contacting section 18 b formed from the winding material.
  • the multi-compound 16 "thus has the shape of a half trough.
  • the contacting element shown in FIG. 5c corresponds to that shown in FIG. 5a, except that here the conductor 15 which leads to the winding arrangement is formed from two different materials. Namely, the conductor 15 is formed at least in a portion of the winding-side contacting portion 18c from a portion 15.2 formed of the winding material and a portion 15.1 made of another material. The portion 15.2 formed of the winding material is welded to the winding side contacting portion 18c of the contacting member 10 ", and the portion 15.1 formed of the other material is of the winding side
  • the contacting element shown in FIG. 5d corresponds to that shown in FIG. 5b, except that here the conductor 15 leading to the winding arrangement is formed as in the embodiment shown in FIG. 5c.
  • the contacting section 17 "a to 17" d providing the multi-substance compound 16 " is in each case connected directly to the supply-side contacting section 11 in the embodiments shown in Figures 5a to 5d
  • Kunststoffierabitess with the feed-side contacting portion by one of TIG, TIG, MIG, MAG, resistance, friction welding, laser welding, solder joint with flux and solder joint without flux, and with or without ultrasound support, is provided.
  • a contacting arrangement comprising a contacting element as described above and a winding side
  • an electric machine in particular in a motor vehicle, which is formed in such a way that contact with a winding arrangement in the electric machine is formed by a contact element formed as above and / or by a contact arrangement provided as above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Windings For Motors And Generators (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

Élément de contact (10; 10'; 10''; 10''') permettant d'établir un contact électrique avec un moteur électrique, en particulier dans un véhicule à moteur, qui comporte un premier segment de contact (13; 14; 18; 21') constitué d'un premier matériau, et un second segment de contact (11; 17'; 11; 23) constitué d'un second matériau, différent du premier matériau, le premier segment de contact et le second segment de contact étant reliés au moyen d'une liaison constituée de plusieurs matériaux (16; 16'; 16''; 16''').
EP13805326.9A 2013-01-18 2013-12-06 Élément de contact pour un moteur électrique Withdrawn EP2946461A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013200794.9A DE102013200794A1 (de) 2013-01-18 2013-01-18 Kontaktierelement für eine elektrische Maschine
PCT/EP2013/075808 WO2014111200A2 (fr) 2013-01-18 2013-12-06 Élément de contact pour un moteur électrique

Publications (1)

Publication Number Publication Date
EP2946461A2 true EP2946461A2 (fr) 2015-11-25

Family

ID=49765483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13805326.9A Withdrawn EP2946461A2 (fr) 2013-01-18 2013-12-06 Élément de contact pour un moteur électrique

Country Status (6)

Country Link
US (1) US20150318768A1 (fr)
EP (1) EP2946461A2 (fr)
JP (1) JP6129345B2 (fr)
CN (1) CN104904100A (fr)
DE (1) DE102013200794A1 (fr)
WO (1) WO2014111200A2 (fr)

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DE102014007443A1 (de) 2014-05-21 2015-11-26 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt Elektrische Baugruppe für ein Kraftfahrzeug und Verfahren zur Montage einer solchen elektrischen Baugruppe
DE102014015936A1 (de) * 2014-10-30 2016-05-04 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Kommutatormotor eines Kraftfahrzeugs, Kommutator und Verfahren zur Herstellung eines Kommutators
DE102014225393A1 (de) * 2014-12-10 2016-06-16 Robert Bosch Gmbh Verfahren zur Herstellung einer elektrisch leitenden Verbindung zwischen einem Kupfer-Bauteil und einem Aluminium-Bauteil
US9632226B2 (en) 2015-02-12 2017-04-25 Digilens Inc. Waveguide grating device
DE102016203386B4 (de) * 2015-03-02 2021-03-04 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Kommutatormotor
JP6206471B2 (ja) * 2015-11-27 2017-10-04 デンソートリム株式会社 内燃機関用回転電機およびその電極
WO2017183046A1 (fr) * 2016-04-19 2017-10-26 India Nippon Electricals Limited Connexion de borne de dispositif électromagnétique rotatif
DE102016217516A1 (de) 2016-09-14 2018-03-15 Seg Automotive Germany Gmbh Elektrischer Rotor und Verfahren zur Bereitstellung eines elektrischen Kontakts zwischen einer Rotorwicklung und einer Kontaktfahne
SK8171Y1 (sk) * 2016-12-08 2018-07-02 Askoll Holding S R L A Socio Unico Komutátor, rotor pre univerzálny motor obsahujúci tento komutátor a univerzálny motor obsahujúci tento rotor

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Also Published As

Publication number Publication date
JP6129345B2 (ja) 2017-05-17
WO2014111200A2 (fr) 2014-07-24
WO2014111200A3 (fr) 2014-12-04
DE102013200794A1 (de) 2014-07-24
JP2016505235A (ja) 2016-02-18
CN104904100A (zh) 2015-09-09
US20150318768A1 (en) 2015-11-05

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