EP3379651B1 - Cosse - Google Patents

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Publication number
EP3379651B1
EP3379651B1 EP17305337.2A EP17305337A EP3379651B1 EP 3379651 B1 EP3379651 B1 EP 3379651B1 EP 17305337 A EP17305337 A EP 17305337A EP 3379651 B1 EP3379651 B1 EP 3379651B1
Authority
EP
European Patent Office
Prior art keywords
conductor
container
cable lug
connection
stripped
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.)
Active
Application number
EP17305337.2A
Other languages
German (de)
English (en)
Other versions
EP3379651A1 (fr
Inventor
Marina Hoch
Michael Siller
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.)
Nexans SA
Original Assignee
Nexans SA
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 Nexans SA filed Critical Nexans SA
Priority to EP17305337.2A priority Critical patent/EP3379651B1/fr
Publication of EP3379651A1 publication Critical patent/EP3379651A1/fr
Application granted granted Critical
Publication of EP3379651B1 publication Critical patent/EP3379651B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01R4/187—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 combined with soldering or welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • 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
    • H01R4/20—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 using a crimping sleeve
    • 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
    • H01R4/625—Soldered or welded connections

Definitions

  • the invention relates to a method for producing a connection between an electrical conductor and a current-carrying element according to the preamble of patent claim 1.
  • electrical conductors such as stranded conductors, and the contact elements made of electrically conductive material connected to them are used. Electrical connections must be made between the voltage source, such as a battery, and actuators, sensors, control elements, etc.
  • the current-carrying elements mentioned are, for example, the connections of a battery or bolts in the engine compartment of a motor vehicle, to which electrical conductors must be connected using cable lugs. In most cases, these are flexible, insulated stranded conductors.
  • the cable lugs are metal elements that are designed in such a way that they can be crimped onto and/or welded to a stripped conductor end. The conductor and the cable lugs are connected to one another in a force-fitting and/or material-fitting manner.
  • the cable lug 1 has a contact end 2 for connection to the current-carrying element, to which the cable lug 1 is screwed, for example.
  • the cable lug 1 has a receptacle 3 for a stripped end of an electrical conductor.
  • the receptacle 3 has two pairs of crimping wings 4 and 5, which are crimped around the conductor end. The conductor end can also be welded to the cable lug 1.
  • the cable lugs are usually made of copper or a copper alloy.
  • the stripped aluminum conductor must be freed of the non-conductive oxide layer that forms when aluminum comes into contact with oxygen before the electrical connection. This can be achieved, for example, by welding the aluminum conductor to the cable lug. Welding also has the advantage that the conductor and the cable lug are materially connected to one another, so that any cold flow of the aluminum has no influence on the quality of the connection.
  • the welding point is usually located directly at the connection point of the cable lug on the current-carrying element.
  • connection The mechanical stability of the connection to the cable lug is particularly important for stranded conductors or battery cables with large cross-sections.
  • the connection must be resistant to vibrations and any cold flow of the aluminum.
  • a method for connecting an electrical conductor to a current-carrying element in which a connecting element is used which has a three-dimensional contact part at its end used for connection to a conductor, which in the assembly position rests with a curved end face on the front side of an electrical conductor.
  • a sleeve is pressed onto the end of the conductor, which has been stripped of its insulation, which protrudes beyond the end of the conductor, and into which the contact element is inserted until its end face rests on the front side of the conductor.
  • the connecting element has a flange which rests on the sleeve in the assembly position. The flange can be welded to the sleeve.
  • a method for establishing a connection between an electrical conductor and a current-carrying element is also described in the document US 6 538 203 B1 to see.
  • the document US 2017/033473 A1 is the prior art closest to the subject matter of claim 1 and describes a method for producing a connection between a cable lug and a cable, which also uses friction stir welding.
  • the invention is based on the object of providing a method for producing a connection for an electrical conductor which meets the aforementioned requirements.
  • the cable lug used for this process is a dimensionally stable, conductive contact element for the transmission of current by connecting an electrical conductor to a current-carrying element.
  • the cable lug consists of two separate fastening elements, namely the container and the contact end.
  • the container serves to hold the conductor, which is flexible and movable.
  • the contact end also referred to below as the connection geometry, serves to attach the cable lug to the current-carrying element, which is fixed.
  • the cable lug is designed in such a way that the conductor can be attached to it as desired by crimping and welding.
  • connection geometry absorbs all mechanical loads in the connection between the electrical conductor and the current-carrying element mounted using the cable lug, for example vibrations or shocks in a motor vehicle.
  • the transition element between the contact end and the container represents a spatial and functional separation of these two fastening elements. Due to this spatial and functional separation, the fastening method of the conductor has no influence on the geometry or the mechanical structure of the connection geometry, since the force and heat effects when fastening the conductor end do not take place in the area of the contact end.
  • connection geometry cannot be damaged. This ensures that the connection geometry can withstand mechanical stresses such as vibrations and impacts over the long term.
  • the cable lug according to the invention is therefore extremely robust and the connection between the cable end and the cable lug is protected from mechanical stresses that can occur during use and is particularly durable.
  • the cable lug according to the invention can be designed in such a way that the contact geometry, i.e. the shape of the container, always remains the same for the conductor and the connection geometry is designed differently according to the application.
  • the transition element can take various forms, which ensure spatial and functional separation.
  • the cable lug can be used advantageously for conductors with large cross-sections which must be contacted safely and permanently, for example in electric and hybrid vehicles and in mechanical and plant engineering.
  • the invention further relates to a connection consisting of an electrical conductor and a cable lug with the mentioned properties.
  • the Fig. 2 and 3 show a cable lug 10, 20 according to a first (not part of the invention) or second embodiment of the invention.
  • the cable lug 10, 20 has a tube- or pot-like container 11 which is closed at its base 11a.
  • the container is essentially cylindrical.
  • the container 11 can also have a conical shape that narrows towards the base 11a, or other shapes suitable for receiving conductors.
  • the container 11 is open on one side, opposite the base 11a.
  • the cable lug 10, 20 can be connected to an electrical element, for example a battery terminal or the body of a motor vehicle, by means of the contact end 12.
  • the cable lug 10, 20 can be screwed to the electrical element, for which purpose a screw can be inserted through a bore or hole 13 in the contact end 12.
  • the transition element 14 has according to the first embodiment of the Fig.2 , which is not part of the invention, a shape bent in two directions, to which the contact end 12 is continuously connected.
  • the transition element 14 has the shape of a web.
  • the web consists of two flat parts 15, 16 which are connected to one another by means of a ramp 17.
  • the contact end 12 is arranged opposite the container 11 at an approximately right angle to the flat parts 15, 16.
  • the shape of the transition element 14 can be adapted to the respective application requirements.
  • the transition element 14 ensures that the connection geometry, i.e. the contact end 12, is spatially and functionally separated from the contact geometry, i.e. the container 11. A main axis of the container 11 and the contact end are thus in different planes. Due to the transition element 14, the contact end 12 does not connect directly and continuously to the container 11 for the conductor end.
  • the heat effect during welding is spatially independent of the contact end 12 of the cable lug.
  • the welding point which is located on the bottom 11a of the container 11, is therefore force-decoupled from the connection geometry.
  • the container 11 represents a receptacle for an electrical conductor to be connected to the cable lug 10, 20.
  • a cable lug 20 according to the invention mounted on a stripped end 30a of a conductor 30 is shown in Fig.4 shown.
  • the electrical conductor 30 is, for example, a stranded conductor made of aluminum.
  • the stranded conductor 30 consists of a plurality of individual electrical conductors and is surrounded by insulation.
  • the insulation consists, for example, of silicone or polyvinyl chloride.
  • the cable lug 10, 20 can, however, also accommodate other types of electrical conductors, for example individual conductors.
  • the stripped end 30a of the stranded conductor 30 is inserted into the container 11 of the cable lug 20.
  • the stripped part 30a of the conductor 30 protrudes slightly from the container 11.
  • the container 11 can, however, also completely cover the stripped end 30a.
  • the container 11 is crimped to the stripped end 30a of the conductor 30.
  • the front side of the conductor 30 is welded to the bottom 11a of the container 11 of the cable lug 20.
  • the end of the insulation of the conductor 30 can also extend a little way into the container 11.
  • the container 11 can be designed accordingly for this purpose, for example with a conical shape.
  • a rotationally symmetrical sealing element (not shown) can be arranged in the gap that may be present between the wall of the container 11 and the conductor end 30a, which seals the stripped conductor end from the environment.
  • the container 11 preferably has a diameter that expands continuously or in steps from the bottom 11a to the edge 11b.
  • the cable lug 10, 20 consists, for example, of copper or a copper alloy. It can also have a surface coating, for example of nickel or tin.
  • the cable lug according to the invention can be manufactured in a few simple steps.
  • the container can be manufactured, for example, in a deep-drawing process. This process is independent of the connection geometry.
  • connection according to the invention of the electrical conductor 30 with the cable lug 10, 20 can be made as follows: First, the end 30a of the conductor 30 is stripped and inserted into the container 11 of the cable lug 10, 20. The front side of the conductor 30, which can consist of a large number of strands, is guided to the bottom 11a of the container 11. The cable lug 10, 20 is then force-fitted to the stripped conductor end 30a by crimping the wall of the container 11. For example, the container 11 can be pressed into a hexagon at least in some areas. The front side of the conductor 30 is then welded to the bottom 11a of the container 11.
  • a sealing element can be pressed into the upper region of the container 11.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Claims (2)

  1. Procédé de fabrication d'une liaison entre un conducteur électrique (30) et un élément conducteur de courant, dans lequel une cosse d'une seule pièce (20) en métal est utilisée, qui comprend un élément de transition (14) sous la forme d'une nervure, qui est constitué de deux parties (15, 16) reliées entre elles au moyen d'une rampe (17), qui comprend, à une extrémité, une partie de contact tridimensionnelle pour la liaison avec l'extrémité du conducteur électrique (30) et à son autre extrémité, une extrémité de contact pour le raccordement de l'élément conducteur de courant, dans lequel la cosse (20) est utilisée avec la partie de contact, réalisée comme un récipient (11) en forme de godet comprenant un fond (11a), qui est fermée au niveau de son fond (11a), dans lequel le procédé comprend les étapes suivantes :
    - l'extrémité (30a) du conducteur (30) est d'abord dénudée et introduite dans le récipient (11) de la cosse (20), dans lequel sa face frontale est guidé jusqu'au fond (11a) du récipient (11),
    - la cosse (20) est ensuite reliée, par sertissage de la paroi du récipient (11), avec l'extrémité de conducteur dénudée (30a), puis
    - la face frontale du conducteur (30) est soudée avec le fond (11a) du récipient (11) par soudage par friction-malaxage.
  2. Procédé selon la revendication 1, caractérisé en ce qu'un récipient (11) avec une forme tronconique ou cylindrique est utilisé.
EP17305337.2A 2017-03-24 2017-03-24 Cosse Active EP3379651B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17305337.2A EP3379651B1 (fr) 2017-03-24 2017-03-24 Cosse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17305337.2A EP3379651B1 (fr) 2017-03-24 2017-03-24 Cosse

Publications (2)

Publication Number Publication Date
EP3379651A1 EP3379651A1 (fr) 2018-09-26
EP3379651B1 true EP3379651B1 (fr) 2024-05-01

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ID=58464484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17305337.2A Active EP3379651B1 (fr) 2017-03-24 2017-03-24 Cosse

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EP (1) EP3379651B1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19908031B4 (de) * 1999-02-24 2009-08-13 Auto-Kabel Management Gmbh Verbindung eines elektrischen Aluminiumkabels mit einem aus Kupfer oder dergleichen Metall bestehenden Anschlußteil
AT510475B1 (de) * 2010-10-13 2013-02-15 Gebauer & Griller Anschlussteil für einen elektrischen leiter
EP2735397B1 (fr) * 2012-11-23 2018-01-17 Nexans Procédé de connection électrique d'une pièce de contact à un conducteur électrique
DE102013219150A1 (de) * 2013-09-24 2015-04-09 Elringklinger Ag Verfahren zum Herstellen einer elektrisch leitenden Verbindung zwischen einer elektrischen Leitung und einem elektrisch leitenden Bauteil
DE102014006244A1 (de) * 2014-04-28 2015-10-29 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Crimp-Schweißverbindung

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Publication number Publication date
EP3379651A1 (fr) 2018-09-26

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