EP3513466A1 - Rotor électrique et procédé d'établissement d'un contact électrique entre un enroulement de rotor et une patte de contact - Google Patents

Rotor électrique et procédé d'établissement d'un contact électrique entre un enroulement de rotor et une patte de contact

Info

Publication number
EP3513466A1
EP3513466A1 EP17754166.1A EP17754166A EP3513466A1 EP 3513466 A1 EP3513466 A1 EP 3513466A1 EP 17754166 A EP17754166 A EP 17754166A EP 3513466 A1 EP3513466 A1 EP 3513466A1
Authority
EP
European Patent Office
Prior art keywords
contact
contacting element
electrical
electrical conductor
electrically conductive
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Withdrawn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
EP17754166.1A
Other languages
German (de)
English (en)
Inventor
Vincenzo DE RENZI
Jose Luis Rodriguez Fernandez
Ivan Usle Ateca
Jose Antonio URBANO COIN
Rene Deponte
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.)
SEG Automotive Germany GmbH
Original Assignee
SEG Automotive Germany 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 SEG Automotive Germany GmbH filed Critical SEG Automotive Germany GmbH
Publication of EP3513466A1 publication Critical patent/EP3513466A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01R39/34—Connections of conductor to slip-ring
    • 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
    • H02K13/02—Connections between slip-rings 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
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/188—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping having an uneven wire-receiving surface to improve the contact
    • 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

Definitions

  • the present invention relates to an electric rotor and a method for providing an electrical contact between a rotor winding and a contact lug of the rotor.
  • the invention thus finds particular application in the field of electric motors and three-phase generators, in particular in a motor vehicle.
  • Electric rotors are used in power generators such as three-phase generators or electric motors. So-called.
  • separately excited rotors each have at least one rotor excitation winding, which is electrically connected to a slip ring arrangement for energizing.
  • both the electrical winding of the rotor i. the rotor winding, as well as the slip ring assembly and the commutator formed of copper.
  • US Pat. No. 2,806,215 A discloses a compression sleeve made of aluminum, which is designed to be pressed against a stripped end of an aluminum wire, wherein a ring section made of copper is welded to the compression sleeve for connecting the aluminum wire or the compression sleeve to a copper wire ,
  • Document DE 10 2013 200 794 A1 discloses a contacting element for providing an electrical contact to an electrical machine.
  • the contacting of a multi-component compound of two different conductive materials is formed to connect a winding assembly of a material different from the commutator material compatible with the commutator hook.
  • the contacting element has a first connecting section of the same material as the winding arrangement for connection to the winding arrangement and a second connecting section of the same material as the commutator hook for connection to the commutator hook.
  • an electric rotor and a method for providing an electrical contact between an electrical conductor of a rotor winding and a contact lug of a slip ring assembly having the features of the independent claims are proposed.
  • Advantageous embodiments tions are the subject of the subclaims and the following description.
  • the electrical conductor comprising a first electrically conductive material, in particular aluminum, to the contact lug of a second electrically conductive material, in particular copper, which is different from the first electrical material, by means of a contacting element arranged therebetween at least at the contact surface to the electrical conductor having a different from the first electrical material third electrically conductive material, in particular tin, so as to prevent corrosion by contact of the first with the second material.
  • the invention offers the advantage that in a simple manner electrical conductors made of different metals can be contacted with each other electrically.
  • the rotor winding can be electrically contacted by means of a so-called "cold" contact with the contact lug of the slip ring assembly.
  • the present invention is suitable in whole particular for the provision of an electrical contact between a contact tab made of copper and an electrical conductor made of aluminum.
  • a further metal layer in particular a tin layer, is on the first contact surface, which preferably has a relief-like structuring
  • This can serve to avoid a direct contact between the first electrically conductive material of the contacting element and the rotor winding and nevertheless produce an electrical contact by means of the intermediate layer.
  • this can be advantageous in the case of electrical contacting between a copper contacting element and an electrical conductor of the aluminum rotor winding in order to prevent corrosion.
  • the invention makes it possible to considerably simplify the electrical contacting of the rotor winding with the contact lug, since mechanical means for producing a contact between different metals, such as between copper and aluminum, may be sufficient when using a contact element according to the invention.
  • the invention can cause electrically conductive elements made of different metals, such as copper and aluminum, do not have to be welded and thus no special measures to protect against corrosion are required.
  • the invention provides the ability to easily contact aluminum rotor windings with conventional copper slip ring assemblies.
  • conventional electric machines can be equipped with a rotor having a rotor coil made of aluminum and yet contacted with conventional slip ring assemblies made of copper.
  • the contacting element is designed to at least partially receive and at least partially surround the electrical conductor of the rotor winding, in particular its end, wherein the first contact surface, in particular the inner surface, of the contacting element forms an inner receiving surface facing the received first electrical conductor and preferably has a relief-like structuring, which is designed to at least partially penetrate into the electrical conductor.
  • the contacting element is designed in such a way that the relief-like structuring cuts into the electrical conductor of the rotor winding or squeezes or eats into it.
  • the contacting element is preferably produced in one piece from an electrically conductive material, in particular from a metal.
  • the contacting element may be made of a casting or be punched and / or milled from a piece of metal.
  • a variety of electrical materials, in particular metals are suitable. Both pure elemental metals and alloys come into consideration.
  • the material of the contacting element can be chosen such that the contacting element is formed from the same material as the contact lug or the slip ring arrangement which is to be connected to the second contact surface of the contacting element. This can in particular make it possible to carry out the electrically conductive connection or contacting of the contact lug with the contacting element in a particularly simple and familiar manner.
  • this electrical contacting can then also be carried out by means of welding and / or soldering, since no occurrence of a corrosion-prone multi-substance compound of different metals is to be feared during welding and / or soldering.
  • the contacting element can also have a coating on the second contact surface, which coating can be beneficial in the production of the electrical contact, for example made of tin.
  • the second contact surface may be at least partially provided with a further material, in particular with a metal, in particular coated.
  • a further material in particular with a metal, in particular coated.
  • metals with a low melting point may be advantageous for welding and / or soldering to the second contact surface to simplify.
  • the second contact surface of the contacting element may be provided at least partially with tin. This has the advantage that the contacting can be well welded to the contact lug and / or soldered.
  • the relief-like structuring on the first contact surface of the contacting element is preferably designed as a toothing and / or serration or has such.
  • the relief-like structuring is designed in such a way that it can at least partially penetrate or squeeze into the conductor when the contacting element is pressed into a conductor located in the contacting element.
  • the relief depth that is to say the length of the elevations of the structuring of the first contact surface, is preferably designed such that it can penetrate at least in places also insulations and / or lacquer coatings possibly formed on the first electrical conductor and, moreover, at least in places into the electrically conductive part or Core of the electrical conductor of the rotor winding can penetrate.
  • the relief depth is advantageous to form the relief depth greater than the thickness of an insulating or lacquer layer of the electrical conductor.
  • the relief depth of at least 1 mm, preferably at least 2 mm, more preferably at least 3 mm, even more preferably at least 4 mm, most preferably at least 5 mm.
  • an electric rotor is thus provided with a contacting element coated on at least one contact surface in order to connect a rotor winding made of aluminum to a contact lug made of copper.
  • a cold contact point without direct aluminum-copper contact can be provided between the contacting element and the rotor winding at the first contact surface, while the second contact surface of the contacting element can be soldered or welded to the contact lug of the slip ring arrangement as conventionally.
  • Figure 1 shows a schematic longitudinal sectional view of a conventional contacting a conventional rotor with a slip ring assembly
  • Figure 2 shows a schematic longitudinal sectional view of a contacting of a rotor according to the invention by means of a contacting element
  • Figure 3 shows a schematic representation of an open contacting element according to a preferred embodiment
  • Figure 4 shows a schematic representation of a closed contacting element according to a preferred embodiment
  • FIG. 5 shows a profile illustration of the relief-like structuring of an open contacting element according to a preferred embodiment.
  • Figure 1 shows a schematic longitudinal sectional view of a conventional contacting a conventional rotor 10 of a generator with a
  • the rotor 10 has a rotor winding 14 as a copper wire with a surrounding paint insulation 14a and is formed as a copper enamel wire. According to the conventional embodiment, one end 14 b of the copper wire or the rotor winding 14 is isolated and extends into a welding region 16 a of a contact lug 16.
  • the contact lug 16 is also formed as copper and tinned in the welding area 16a to allow welding of the stripped end 14b of the copper wire 14 with the contact lug 16 in the welding area 16a or to facilitate. For example, this can be done by resistance welding and / or ultrasonic welding.
  • the contact lug 16 is connected to a shaft 18 and performs the electrical connection see the rotor winding 14 under a ball bearing 20 and under a centrifugal disc 22 through. Beyond the ball bearing 20 and the centrifugal disc 22, the contact lug 16 is connected or contacted with the slip ring assembly 12. The two ends 14b of the rotor winding 14 are contacted separately by means of a respective contact lug 16 to a respective separate slip ring 12a.
  • the contact lug 16 is embedded in a molding compound 28 made of insulating material.
  • FIG. 2 shows a schematic fragmentary longitudinal sectional view of a contacting of a rotor 10 according to the invention according to a preferred embodiment with a slip ring assembly 12 by means of a Maisierelements 26.
  • a rotor winding 24 is formed from an aluminum wire as the first electrically conductive material with surrounding insulation 24a as aluminum enameled wire.
  • the rotor winding 24 is connected by means of a contact element according to the invention 26 according to a preferred embodiment with a contact lug 16 made of copper as a second electrically conductive material.
  • the contacting element 26 in this case has a contacting element body 26a made of copper, which encloses one end of the rotor winding 24.
  • the contacting element 26 is coated on a first contact surface with the aluminum enameled wire with tin as the third electrically conductive material.
  • connection between the contacting element 26 and the end of the rotor winding 24 takes place as a "cold" contact by mechanical pressing or squeezing on the inside as a first contact surface, while a preferably also tinned outside of the contacting element 26 as the second contact surface is welded to a preferably also tinned weld region 16a of the contact lug16.
  • Copper and copper can be used on conventional connection methods, such as welding and / or soldering.
  • a stripping of the end of the rotor winding 24 is not required when using the contacting element 26, since the contacting element according to the embodiment shown can penetrate the insulator layer 24a surrounding the aluminum wire at least in places.
  • FIG. 3 shows a schematic representation of an open contacting element 26 according to a preferred embodiment, which is designed in the manner of a crimp.
  • the contacting element 26 is made of copper and coated with tin.
  • the rotor winding 24 made of aluminum can be inserted into the contacting element 26 as a first electrical conductor such that the first contact surface 26b of the contacting element 26 faces the rotor winding 24.
  • the relief-like structuring 30 is not recognizable in the schematic representation shown (see FIG. 5).
  • FIG. 4 shows the contacting element 26 from FIG. 3 in a closed state, ie after it has been compressed or squeezed together by means of a suitable tool.
  • the contacting element 26 then surrounds the rotor winding 24 and establishes electrical contact between the electrically conductive contact-making element 26 made of copper and the aluminum wire of the rotor winding 24 embedded within the insulation 24a via the tin-coated first contact surface.
  • FIG. 5 shows an exemplary sectional view of a relief-like structuring 30 on the first contact surface of the contacting element body 26a or contact relief element 26 according to a preferred embodiment.
  • the toothed configuration can be seen, which is a penetration through an optionally existing insulating layer 24a to the first electrical Head and penetration into the first electrical conductor allows.
  • other relief-like structures 30, for example with larger or smaller teeth can be formed, in particular for differently configured first electrical conductors or for conductors with different insulations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

L'invention concerne un rotor électrique (10) comportant un enroulement de rotor (14), muni d'un conducteur électrique (24) constitué d'une première matière électriquement conductrice ; une patte de contact (16) d'un ensemble de bague collectrice (12), la patte de contact (16) étant en une deuxième matière électriquement conductrice différente de la première matière électriquement conductrice ; un élément de contact (26) adapté pour établir un contact électrique entre le conducteur électrique (24) de l'enroulement de rotor (14) et la patte de contact (16) ; l'élément de contact (26) étant adapté pour établir un contact électrique avec le conducteur électrique (24) de l'enroulement de rotor (14) par le biais une première surface de contact (26b) et un contact électrique avec la patte de contact (16) par le biais d'une deuxième surface de contact (26c), l'élément de contact (26) comportant une troisième matière électriquement conductrice, différente de la première matière électriquement conductrice, au moins au niveau de la première surface de contact (26b).
EP17754166.1A 2016-09-14 2017-08-18 Rotor électrique et procédé d'établissement d'un contact électrique entre un enroulement de rotor et une patte de contact Withdrawn EP3513466A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016217516.5A DE102016217516A1 (de) 2016-09-14 2016-09-14 Elektrischer Rotor und Verfahren zur Bereitstellung eines elektrischen Kontakts zwischen einer Rotorwicklung und einer Kontaktfahne
PCT/EP2017/070904 WO2018050392A1 (fr) 2016-09-14 2017-08-18 Rotor électrique et procédé d'établissement d'un contact électrique entre un enroulement de rotor et une patte de contact

Publications (1)

Publication Number Publication Date
EP3513466A1 true EP3513466A1 (fr) 2019-07-24

Family

ID=59649720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17754166.1A Withdrawn EP3513466A1 (fr) 2016-09-14 2017-08-18 Rotor électrique et procédé d'établissement d'un contact électrique entre un enroulement de rotor et une patte de contact

Country Status (5)

Country Link
EP (1) EP3513466A1 (fr)
CN (1) CN109792126A (fr)
DE (1) DE102016217516A1 (fr)
MX (1) MX2019002825A (fr)
WO (1) WO2018050392A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018115679A1 (de) * 2018-06-28 2020-01-02 Seg Automotive Germany Gmbh Schleifringanordnung für einen Rotor einer elektrischen Maschine
EP3767807B1 (fr) * 2019-07-19 2022-09-28 Mahle International GmbH Générateur électrique

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806215A (en) 1953-11-04 1957-09-10 Aircraft Marine Prod Inc Aluminum ferrule-copper tongue terminal and method of making
JPS56120774U (fr) * 1980-02-15 1981-09-14
DE8135880U1 (de) 1981-12-09 1982-05-06 Kurt Kraus Elektromotoren- u. Apparatebau GmbH, 4933 Blomberg Vorrichtung zum verbinden der ankerwicklung von kommutatormaschinen
EP0094163B2 (fr) * 1982-05-06 1990-02-28 LUCAS INDUSTRIES public limited company Production de bagues électriques
DE3838436C2 (de) 1988-11-12 2002-09-19 Bosch Gmbh Robert Schleifringanordnung
CN101420154A (zh) 2007-10-26 2009-04-29 德昌电机股份有限公司 电动机换向器
DE102007058911A1 (de) * 2007-11-30 2009-06-04 Robert Bosch Gmbh Elektrische Maschine
CN201436739U (zh) * 2009-06-23 2010-04-07 锦州汉拿电机有限公司 车用交流发电机集电环结构
JP4790851B2 (ja) * 2010-03-11 2011-10-12 株式会社 ピー・エル アルミニウム体の接続構造およびコネクタ
CN201946413U (zh) * 2010-12-13 2011-08-24 上海鹰峰电子科技有限公司 一种电抗器的铝线绕制压接端子结构
JP5781239B2 (ja) 2012-11-19 2015-09-16 三菱電機株式会社 回転電機の回転子およびその製造方法
DE102013200794A1 (de) 2013-01-18 2014-07-24 Robert Bosch Gmbh Kontaktierelement für eine elektrische Maschine
DE102013207884A1 (de) * 2013-04-30 2014-10-30 Robert Bosch Gmbh Verfahren zur Herstellung eines Kollektors für eine Kommutierungseinrichtung
JP2015090742A (ja) * 2013-11-05 2015-05-11 矢崎総業株式会社 圧着端子
FR3016757B1 (fr) * 2014-01-22 2018-03-16 Valeo Equipements Electriques Moteur Dispositif isolant pour collecteur de machine electrique, collecteur et alternateur correspondants

Also Published As

Publication number Publication date
MX2019002825A (es) 2019-07-15
DE102016217516A1 (de) 2018-03-15
WO2018050392A1 (fr) 2018-03-22
CN109792126A (zh) 2019-05-21

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