EP2579390A1 - Terminal en aluminium-cuivre et procédé de fabrication de celui-ci - Google Patents

Terminal en aluminium-cuivre et procédé de fabrication de celui-ci Download PDF

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Publication number
EP2579390A1
EP2579390A1 EP11184002.1A EP11184002A EP2579390A1 EP 2579390 A1 EP2579390 A1 EP 2579390A1 EP 11184002 A EP11184002 A EP 11184002A EP 2579390 A1 EP2579390 A1 EP 2579390A1
Authority
EP
European Patent Office
Prior art keywords
aluminum
copper
terminal
connection
copper terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP11184002.1A
Other languages
German (de)
English (en)
Inventor
Erfindernennung liegt noch nicht vor Die
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.)
WEITKOWITZ Kabelschuhe und Werkzeuge GmbH
Original Assignee
WEITKOWITZ Kabelschuhe und Werkzeuge 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 WEITKOWITZ Kabelschuhe und Werkzeuge GmbH filed Critical WEITKOWITZ Kabelschuhe und Werkzeuge GmbH
Priority to EP11184002.1A priority Critical patent/EP2579390A1/fr
Publication of EP2579390A1 publication Critical patent/EP2579390A1/fr
Ceased legal-status Critical Current

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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
    • H01R4/58—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
    • 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
    • H01R4/70—Insulation of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members

Definitions

  • the invention relates to the technical field of connection technology.
  • the invention relates to a method for producing an aluminum-copper terminal, an aluminum-copper terminal, a vehicle with an aluminum-copper terminal, a power supply network with an aluminum-copper terminal and a power plant with an aluminum-copper Terminal.
  • Terminals or connecting parts can be used.
  • the cable is connected to the terminal on one side of the terminal with the terminal and then on the other side of the terminal, the current-carrying element can be connected.
  • the other side of the terminal for connection to the current-carrying element is designed in the form of a cable lug, which has a flat contact surface with a bore for receiving a fastening bolt or a screw.
  • a method for producing an aluminum-copper terminal is provided, which is designed for electrically connecting a current-carrying aluminum cable with a current-carrying element.
  • an aluminum contact part of the terminal is connected to a copper terminal part of the terminal. This connection takes place in a connection region and serves to produce an electrically conductive connection between the two parts.
  • a media-tight that is, for example, airtight and / or watertight sealing of the connecting region by attaching a primary seal, which firmly adheres to the contact part and the connection part.
  • the user electrically connects the aluminum cable to the terminal. Due to the media density, ie, for example airtight sealing of the connection area between the aluminum contact part and the copper connection part of the terminal, the electrical corrosion of the connection point is avoided, so that the electrical conductivity of the connection point decreases little or no over time.
  • the contact part of the terminal is used to electrically connect a first area of the terminal, for example the rear end of the terminal, to the live aluminum cable.
  • the connection part serves to electrically connect a second area of the terminal, which is, for example, its front end, to the current-carrying element.
  • the attachment of the primary seal around the connection region of the terminal takes place by insert molding of the connection region.
  • the primary seal can also be embodied in the form of a sealant, which is pressed against the connection region or otherwise applied.
  • the sealing may be, for example, two half-shells which are provided on their inner surfaces with a sealing gel or the like, and which are wrapped around the connecting region so that it is sealed by the gel.
  • a seal special thermoplastics or hotmelts, which can be applied by injection molding, or sealing compounds or Knetmassen or silicone materials are used.
  • the secondary seal can be, for example, an impact-resistant plastic or an impact-resistant thermoplastic in the form of a mechanically protective housing.
  • connection of the aluminum contact part with the copper connection part for producing the electrically conductive connection between these two parts can be done for example by ultrasonic welding.
  • the aluminum cable can also be attached to the aluminum contact part in a later method step.
  • the aluminum cable is welded to the aluminum contact part after the primary seal and, if present, the secondary seal are attached.
  • the aluminum-copper terminal can be finished and sealed by the manufacturer. Then it is delivered to be connected on one side to the aluminum cable and on the other side to the other current-carrying element.
  • a shrink tube may be placed around the aluminum contact portion and the copper termination to provide additional protection and seal.
  • This shrink tube may also extend around the end portion of the aluminum cable.
  • an aluminum-copper terminal for electrical connection of a current-carrying aluminum cable is given with a current-carrying element.
  • This terminal is used, for example, by the prepared above manufacturing method.
  • the terminal has an aluminum contact portion for electrically connecting a first portion of the terminal to the live wire.
  • a connection part which comprises copper or consists of copper, is provided, which serves to connect a second area of the terminal to the current-carrying element.
  • the copper connection part is provided with a coating, for example a nickel layer.
  • a primary seal is provided, which closes the connection region between the contact part and the connection part in a media-tight manner to the outside and firmly adheres to the contact part and the connection part.
  • this primary seal may be a soft, elastic seal, which in particular prevents the contact surface between the two parts from being contaminated with an electrolyte, e.g. Salt water, comes into contact.
  • an electrolyte e.g. Salt water
  • the terminal further comprises a secondary seal made of impact-resistant plastic, which completely covers and protects the primary seal, since the primary seal is especially for sealing, but can be very sensitive.
  • This secondary seal may, for example, in addition to its outer side have a corrugation, which favors a firm adhesion of the shrink tube to the terminal.
  • the primary seal is sprayed onto the connection point between the contact part and the connection part.
  • the contact part and the connection part are welded together to form the conductive connection between these two parts.
  • they are Other types of connections between the contacts and the connection part possible.
  • connection part is designed as a cable lug.
  • connection part is designed as a pole terminal of a battery.
  • a vehicle having an aluminum-copper terminal described above and hereinafter.
  • the terminal may be used to connect an aluminum lead to the pole of a battery of the vehicle and may be used to contact aluminum cables in the engine compartment exposed to extreme environmental conditions such as heat, cold, dew, fuel spray, vibration, salt water.
  • a power supply network is provided with an aluminum-copper terminal described above and below.
  • the terminal may be a terminal designed for the low voltage or medium voltage range.
  • the terminal may be designed for high currents, as may occur in such networks.
  • the terminal can be used in wind turbines. In the tower of the wind turbine high-flexible copper cables are used starting from the generator, which participate all rotations and movements of the generator; however, aluminum pipe is often used to redistribute and distribute energy. In the transition area just such an aluminum-copper terminal is needed again.
  • a power plant is specified with an aluminum-copper terminal described above and below.
  • the power plant is, for example, a wind power plant, a coal power plant, a photovoltaic power plant or a hydroelectric power plant.
  • Fig. 1A shows a sectional view of a terminal 100 according to an embodiment of the invention along its longitudinal axis AA (see Fig. 1C ).
  • the terminal 100 has a contact part 101 which, for example, is made of aluminum or at least comprises aluminum or an aluminum alloy. Electrically conductive is connected to a connection part 102, which consists for example of copper or at least copper or a copper alloy.
  • the connection part can also be coated with nickel or another metal, in particular or exclusively in the region of the conductive connection between the two parts 105.
  • the aluminum contact part 101 may have at its left end two webs 103, 104, which may be used as insulation crimp.
  • Fig. 1B shows a side view of the aluminum-copper terminal, from which in particular the shape of the two webs 103, 104 can be seen prior to fixing the current-carrying cable.
  • the two webs 103, 104 each have one vertical flank and an inclined flank, wherein the one web 103 has the sloping flank at its front and the other web 104, the oblique flank at its rear side, so that the two mutually opposite webs 103, 104 can be bent towards each other, without getting lost to obstruct (see for example Fig. 4A ).
  • the contact surface 105 along which the conductive connection between the aluminum contact part and the copper connection part is made, may have a smaller extent than the aluminum contact part located underneath or the copper connection part 102 located above it.
  • the terminal narrows in the connection region 105, and that the side edges 106, 107 of the aluminum contact part 101 1 overlap the corresponding side surfaces 108, 109 of the copper connection part 102.
  • both parts 101, 102 are narrower in the contact area 105 than in the remaining area to make room for the sealing / encapsulation of this area, so that the seal then protrudes as little as possible from the finished component.
  • the aluminum contact part has, between the contact area 105 and the two crimp bars 103, 104, a flat area 115 on which the current-carrying aluminum cable (see FIGS. 4A to 4C ) can be welded.
  • the copper terminal 102 also has a flat portion 114 located at the right end thereof.
  • This region 114 is for connection to the current-carrying element (not shown) and has, for example, a recess in the form of a bore 110 or punched-out in order to fix the end region 114 of this part 102 to the current-carrying element.
  • the front side 111 of the copper connection part 102 may be rounded or circular-arc-shaped.
  • the copper connection part 102 is designed in the form of a cable lug and has a step 112, which is located between the contact region 105 and the connection region 114.
  • the rear portion 113 of the aluminum contact portion 101 which lies between the two crimping ribs 103, 104, may have a curved surface, which is modeled on the cross section of the cable to be absorbed.
  • Fig. 2A shows a cross-sectional view of the terminal 100 of Fig. 1A to 1D after the primary seal 201 has been applied.
  • the Fig. 2B to 2D show more representations of the terminal of Fig. 2A in side view, in plan view and in perspective.
  • connection part 101 Between the aluminum cable to be attached later and the aluminum contact part 101 and between the aluminum contact part and the copper connection part 102 there are intermetallic, electrically conductive connections. These connections are generated for example by ultrasonic welding. To prevent electrocorrosion, the primary seal 201 is applied. In this case, the primary seal closes the connection region 105 between the connection part 102 and the contact part 101 in a media-tight manner, ie airtight and / or in particular oxygen-tight, and also adheres firmly to the contact part 101 and the connection part 102.
  • media-tight manner ie airtight and / or in particular oxygen-tight
  • the primary seal may be cuboid, so that a fixation of a later attached secondary seal is favored.
  • the terminal By attaching the primary seal, electrocorrosion of the contact area between the two parts 101, 102 can be effectively prevented.
  • the terminal can also be used in wet areas without the conductivity deteriorating.
  • Fig. 3A shows a sectional view through the terminal 100 along its longitudinal axis, now a secondary seal 301, for example made of plastic, has been attached to the primary seal 201.
  • the secondary seal 301 in this case can develop a mechanical protection against damage to the primary seal and can be made for example of impact-resistant plastic.
  • the secondary seal may in particular be designed in the form of a housing, which is designed, for example, in two parts and is placed around the primary seal. Also, the secondary seal, like the primary seal, can be sprayed on.
  • the secondary seal may have a corrugation to promote the adhesion of a subsequent shrink tube.
  • the corrugation is transverse to the component, since the shrink tube during "shrinking" tends to contract in the longitudinal direction and thus could possibly slip off the seal.
  • the in the Fig. 3A to 3D shown embodiment of the terminal can then be supplied in this form to the user.
  • the user thus receives a ready Sealed system in which the critical transition from aluminum to copper is already sealed by the manufacturer.
  • Such terminals can be used both in the vehicle sector as well as in the field of power generation (power plant technology) and energy distribution, and generally in the electrical sector.
  • sealants As an alternative to the primary seal and / or the secondary seal described above, sealants, gel-filled half-shells, etc. may be used.
  • FIGS. 4A to 4C show a perspective view, a side view and a top view of a terminal 100 with an attached cable 401.
  • the cable 401 has an outer insulation and a lying therein strand (cable), for example, made of aluminum.
  • the strand terminates in a flat, widened end 402, which comes to lie on the contact region of the aluminum contact part 101 which extends between the two crimping webs 103, 104 and the contact region 105 (see FIG Fig. 1C ) is located at the end of the aluminum contact part 101.
  • the aluminum strand is ultrasonically welded to the aluminum contact part, for example.
  • the two crimping webs 103, 104 can be bent inwards in order to lay around the insulation of the aluminum strand and additionally mechanically fix the cable.
  • Fig. 4B is the flat portion 403 of the aluminum connector 101 to see on which the strand 402 is welded.
  • the seal 201, 301 in the joining region 105 of the two parts 101, 102 excludes an oxygen supply to the contact point and thus an electrical corrosion.
  • This sealing of the joining region can take place in the form of an automated process, which directly follows the welding process of the two parts 101, 102. Since this process is carried out and monitored directly by the manufacturer, a high standard of quality can be ensured.
  • Fig. 5 shows another embodiment of the terminal 100, in which the copper terminal part is designed in the form of a sheet-metal battery terminal 501, which can be placed around the pole of a car battery.
  • Fig. 6 1 shows a motor vehicle 600, which may be, for example, a lorry or a passenger car, and which has one or more terminals 100.
  • FIG. 3 shows a power supply network 700 with multiple power plants 701, 707. Both the wind power plant 707 and the coal power plant 701 have a plurality of terminals 100. From these power plants leads 702 to corresponding transformer stations 703, 708. These transformer stations, which are designed to transform the current, have a plurality of terminals 100. From the transformer stations then lead lines 704, 709 to the households 705, 706, which may also have terminals 100.
  • a "sealed" terminal as described above may be used.
  • Fig. 8 shows a flowchart of a method according to an embodiment of the invention.
  • the copper connection part can be designed as a stamped part or forged part.
  • the punching or forging of the copper connection part as well as the stamping or forging of the aluminum contact part takes place at the manufacturer of the terminal.
  • a surface treatment of the copper connection part may take place in step 803.
  • the surface is nickel plated.
  • a welding of the copper connection part to the aluminum contact part takes place, and in step 805 the sealing of the weld is then carried out by an encapsulation with the primary seal.
  • step 806 it is then optionally possible to attach a secondary seal in the form of a plastic housing.
  • the above steps are done by the manufacturer in a supervised process.
  • the user can then be done in step 807 welding the aluminum cable to the aluminum contact piece.
  • step 808 the isolation claws or crimping ribs 103, 104 are transferred.
  • step 809 a heat shrink tubing may be further attached.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
EP11184002.1A 2011-10-05 2011-10-05 Terminal en aluminium-cuivre et procédé de fabrication de celui-ci Ceased EP2579390A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11184002.1A EP2579390A1 (fr) 2011-10-05 2011-10-05 Terminal en aluminium-cuivre et procédé de fabrication de celui-ci

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11184002.1A EP2579390A1 (fr) 2011-10-05 2011-10-05 Terminal en aluminium-cuivre et procédé de fabrication de celui-ci

Publications (1)

Publication Number Publication Date
EP2579390A1 true EP2579390A1 (fr) 2013-04-10

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EP11184002.1A Ceased EP2579390A1 (fr) 2011-10-05 2011-10-05 Terminal en aluminium-cuivre et procédé de fabrication de celui-ci

Country Status (1)

Country Link
EP (1) EP2579390A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2899810A1 (fr) 2014-01-24 2015-07-29 Intercable GmbH Cosse
DE102014112701A1 (de) 2014-09-03 2016-03-03 Harting Electric Gmbh & Co. Kg Crimpkontakt
DE102014118505A1 (de) 2014-12-12 2016-06-16 Harting Kgaa Crimphülse, Crimpkontakt und Crimpverfahren
WO2018223886A1 (fr) * 2017-06-05 2018-12-13 吉林省中赢高科技有限公司 Connecteur cuivre-aluminium
CN115528444A (zh) * 2022-09-16 2022-12-27 长春捷翼汽车零部件有限公司 一种新型铜铝电连接装置
DE102014109824B4 (de) 2013-07-18 2023-02-02 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Konversionsanschlussvorrichtung zum elektrischen Koppeln von Komponenten aus unähnlichem Metall

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5326273A (en) * 1990-07-13 1994-07-05 Sumitomo Wiring Systems, Ltd. Electric connection terminal
DE102006031839A1 (de) * 2006-07-07 2008-01-10 Auto Kabel Managementgesellschaft Mbh Elektrisches Kontaktelement
EP2141771A1 (fr) * 2008-07-03 2010-01-06 Lisa Dräxlmaier GmbH Mise en contact de conduites en métal léger
US20100075535A1 (en) * 2007-04-18 2010-03-25 Toyota Jidosha Kabushiki Kaisha Connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5326273A (en) * 1990-07-13 1994-07-05 Sumitomo Wiring Systems, Ltd. Electric connection terminal
DE102006031839A1 (de) * 2006-07-07 2008-01-10 Auto Kabel Managementgesellschaft Mbh Elektrisches Kontaktelement
US20100075535A1 (en) * 2007-04-18 2010-03-25 Toyota Jidosha Kabushiki Kaisha Connector
EP2141771A1 (fr) * 2008-07-03 2010-01-06 Lisa Dräxlmaier GmbH Mise en contact de conduites en métal léger

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014109824B4 (de) 2013-07-18 2023-02-02 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Konversionsanschlussvorrichtung zum elektrischen Koppeln von Komponenten aus unähnlichem Metall
EP2899810A1 (fr) 2014-01-24 2015-07-29 Intercable GmbH Cosse
DE102014112701A1 (de) 2014-09-03 2016-03-03 Harting Electric Gmbh & Co. Kg Crimpkontakt
WO2016034166A2 (fr) 2014-09-03 2016-03-10 Harting Electric Gmbh & Co. Kg Contact à sertir
DE102014118505A1 (de) 2014-12-12 2016-06-16 Harting Kgaa Crimphülse, Crimpkontakt und Crimpverfahren
WO2018223886A1 (fr) * 2017-06-05 2018-12-13 吉林省中赢高科技有限公司 Connecteur cuivre-aluminium
US11450975B2 (en) 2017-06-05 2022-09-20 Jilin Zhong Ying High Technology Co., Ltd. Copper-aluminium connector
CN115528444A (zh) * 2022-09-16 2022-12-27 长春捷翼汽车零部件有限公司 一种新型铜铝电连接装置
WO2024056071A1 (fr) * 2022-09-16 2024-03-21 长春捷翼汽车科技股份有限公司 Nouvel appareil de connexion électrique cuivre-aluminium

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