EP2817854B1 - Connection of a first metal component to a covered second metal component - Google Patents

Connection of a first metal component to a covered second metal component Download PDF

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Publication number
EP2817854B1
EP2817854B1 EP13705742.8A EP13705742A EP2817854B1 EP 2817854 B1 EP2817854 B1 EP 2817854B1 EP 13705742 A EP13705742 A EP 13705742A EP 2817854 B1 EP2817854 B1 EP 2817854B1
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EP
European Patent Office
Prior art keywords
sheath
metallic component
cable
insulating material
conductor
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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.)
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EP13705742.8A
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German (de)
French (fr)
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EP2817854A1 (en
Inventor
Daniel BECHSTEIN
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Kromberg and Schubert GmbH and Co KG
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Kromberg and Schubert GmbH and Co KG
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    • 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
    • H01R4/02—Soldered or welded connections
    • H01R4/023—Soldered or welded connections between cables or wires and terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • 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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/005—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing
    • 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
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for 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
    • 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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • H01R12/7011—Locking or fixing a connector to a PCB
    • H01R12/707—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
    • H01R2103/00—Two poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
    • 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
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0207—Ultrasonic-, H.F.-, cold- or impact welding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/4921—Contact or terminal manufacturing by assembling plural parts with bonding
    • Y10T29/49211—Contact or terminal manufacturing by assembling plural parts with bonding of fused material
    • Y10T29/49213—Metal

Definitions

  • the invention relates to a compound of a first metallic component with a coated second metallic component according to the preamble of claim 1. Furthermore, the invention relates to a method for producing such a compound according to the preamble of claim X.
  • the first metallic component may, for example a component consisting of copper, wherein the second metallic component is an aluminum component.
  • the cable ends are garnished with copper or other metal cable lugs that allow attachment of the cable. For example, in the motor vehicle such cables are exposed to extreme loads, in particular temperature changes, vibration stresses and moisture.
  • FIG. 3 shows a longitudinal section through the in FIG. 1 shown prefabricated cable.
  • the cable 1 is made of aluminum and is surrounded by a jacket 1.2 consisting of a polyorganosiloxane (HTV silicone).
  • the cable lug 2 is made of copper, which is covered with a contact layer of NiP of about 0.3 to about 5 microns thick, in particular 0.5 to 3 microns thick.
  • the conductor 1.1 made of aluminum is uncovered by removal of the silicone sheath 1.2.
  • the connection between the cable lug 2 and the aluminum cable 1 is preferably carried out by ultrasonic welding.

Description

Stand der TechnikState of the art

Die Erfindung betrifft eine Verbindung eines ersten metallischen Bauteils mit einem umhüllten zweiten metallischen Bauteil nach dem Oberbegriff des Anspruchs 1. Weiterhin betrifft die Erfindung ein Verfahren zur Herstellung einer derartigen Verbindung nach dem Oberbegriff des Anspruchs X. Bei dem ersten metallischen Bauteil kann es sich beispielsweise um ein aus Kupfer bestehendes Bauteil, bei dem zweiten metallischen Bauteil um ein aus Aluminium bestehendes Bauteil handeln. Aus Gründen der Kostenreduzierung und Gewichtseinsparung werden vermehrt aus Aluminium bestehende Kabel im Fahrzeugbau eingesetzt. Üblicherweise sind die Kabelenden mit aus Kupfer oder anderen Metallen bestehenden Kabelschuhen garniert, die eine Befestigung der Kabel ermöglichen. Beispielsweise im Kraftfahrzeug sind derartige Kabel extremen Belastungen ausgesetzt, wie insbesondere Temperaturwechseln, Schwingungsbeanspruchungen und Feuchtigkeitseinflüssen.The invention relates to a compound of a first metallic component with a coated second metallic component according to the preamble of claim 1. Furthermore, the invention relates to a method for producing such a compound according to the preamble of claim X. The first metallic component may, for example a component consisting of copper, wherein the second metallic component is an aluminum component. For reasons of cost reduction and weight saving increasingly existing aluminum cables are used in vehicle construction. Typically, the cable ends are garnished with copper or other metal cable lugs that allow attachment of the cable. For example, in the motor vehicle such cables are exposed to extreme loads, in particular temperature changes, vibration stresses and moisture.

Wird der Zutritt von Feuchtigkeit zu der üblicherweise durch Schweißen hergestellten Verbindung zwischen den genannten Bauteilen zugelassen, dann ist eine rasche Korrosion des Aluminiums zu befürchten, die die Festigkeit des Kabels und damit die Betriebssicherheit des gesamten Bordnetzes nachteilig beeinflusst.If the admission of moisture to the connection usually made by welding between the named components is permitted, then a rapid corrosion of the aluminum is to be feared, which adversely affects the strength of the cable and thus the reliability of the entire electrical system.

Zwar wurde schon versucht, die Verbindungsstelle zwischen den Bauteilen mittels Schrumpfschlauch und/oder Schrumpfschlauch-Butylstreifendichtungen bzw. durch eine Umspritzung mit Polymeren feuchtigkeitsfest abzudichten. Diese bekannten Dichtsysteme können jedoch den für den Einsatz in der Praxis geforderten Temperaturbereich zwischen etwa -40°C und etwa + 230°C nicht abdecken und versagen daher. Abträglich für eine gute Dichtwirkung sind auch die sehr unterschiedlichen Ausdehnungskoeffizienten der eingesetzten Werkstoffe.Although it has been tried to seal the junction between the components by means of shrink tubing and / or shrink tubing Butylstreifendichtungen or by encapsulation with polymers moisture resistant. However, these known sealing systems can not cover the temperature range required for use in practice between about -40 ° C and about + 230 ° C and therefore fail. Another disadvantage for a good sealing effect is the very different coefficients of expansion of the materials used.

Aus DE 34 42 131 A1 ist ein Verfahren zum Umhüllen von mikroelektrischen Hybrid-Halbleiterschaltungen oder von mikroelektronischen Halbleiterbauelementen bekannt, bei welchem die auf einem Substrat befindlichen Bauelemente mit einer weichen, siegelfähigen Kunststoffschicht übergossen, mit einer Kunststoff-Metall-Verbundfolie abgedeckt und anschließend mit Kunstharz verkapselt werden. Bei diesem relativ aufwändigen Verfahren wird als weiche siegelfähige Kunststoffschicht beispielsweise ein niederviskoses, flüssiges Elastomer aufgebracht. Auf diese Schicht wird dann eine Kunststoff-Metall-Verbundfolie aufgelegt und mit einem Hohlstempel angepresst. Für das anschließende Vergießen bzw. Verkapseln wird dann ein Kunstharz, insbesondere ein hochgefülltes Epoxidharz verwendet.Out DE 34 42 131 A1 discloses a method for encasing hybrid micro-electric semiconductor circuits or microelectronic semiconductor devices, in which the components located on a substrate are covered with a soft, sealable plastic layer, covered with a plastic-metal composite film and then encapsulated with synthetic resin. In this relatively complex process, for example, a low-viscosity, liquid elastomer is applied as a soft, sealable plastic layer. A plastic-metal composite film is then placed on this layer and pressed with a hollow punch. For the subsequent encapsulation or encapsulation then a synthetic resin, in particular a highly filled epoxy resin is used.

Aus den Druckschriften DE 10 2006 031893 A1 , FR 2 879 751 A1 , DE 10 2008 051323 A1 und der JP 2003 297447 A sind weitere Lösungen zur Verbindung von ersten mit zweiten metallischen Leitern bekannt.From the pamphlets DE 10 2006 031893 A1 . FR 2 879 751 A1 . DE 10 2008 051323 A1 and the JP 2003 297447 A Further solutions for connecting first to second metallic conductors are known.

Aus EP 0 361 194 A2 ist ein Verfahren zum Umhüllen von elektrischen und elektronischen Bauelementen oder Baugruppen bekannt, bei welchem zunächst auf die mechanisch empfindlichen Bereiche eine Zwischenschicht aus einem elastischen Kunststoff und dann eine äußere Umhüllungsschicht aus einem mechanisch und chemisch stabilen Kunststoff aufgebracht werden. Dabei werden sowohl die äußere Umhüllungsschicht als auch die Zwischenschicht durch Spritzgießen einer Formmasse in einem Spritzgießwerkzeug hergestellt. Bei dem Spritzgießprozess werden zu kapselnde Bauelemente jedoch relativ hohen Druck- und Temperaturbelastungen ausgesetzt.Out EP 0 361 194 A2 a method for wrapping electrical and electronic components or assemblies is known in which first an intermediate layer of an elastic plastic and then an outer cladding layer of a mechanically and chemically stable plastic are applied to the mechanically sensitive areas. In this case, both the outer cladding layer and the intermediate layer are produced by injection molding a molding compound in an injection mold. In the injection molding process, however, components to be encapsulated are exposed to relatively high pressure and temperature stresses.

Aus DE 10 2004 062 457 A1 ist eine wasserabsorbierende Zusammensetzung mit unterdrückter Korrosivität in gequollenem Zustand gegenüber Kupfer, deren Verwendung in Kabelummantelungen sowie ein ummanteltes Kabel, bekannt.Out DE 10 2004 062 457 A1 is a water-swelling composition with suppressed corrosivity in a swollen state to copper, their use in cable sheathing and a sheathed cable, known.

Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Verbindung zwischen aus unterschiedlichen Metallen bestehenden Bauteilen bereitzustellen.The invention has for its object to provide an improved connection between components consisting of different metals.

Diese Aufgabe wird durch die in Anspruch 1 angegebene Erfindung gelöst.This object is achieved by the invention specified in claim 1.

Ein vorteilhaftes Verfahren für die Herstellung einer derartigen Verbindung geht aus Anspruch x hervor.An advantageous process for the preparation of such a compound is apparent from claim x.

Vorteile der ErfindungAdvantages of the invention

Umfangreiche Praxistest haben erwiesen, dass die erfindungsgemäß ausgestaltete Verbindung Temperaturwechselbeanspruchungen in einem Temperaturbereich zwischen etwa -40°C und + 190 °C, bei starker mechanischer Schwingungsbelastung und hoher Feuchtigkeit über lange Zeit standhält. Selbst wenn die Verbindung über viele Stunden einer Dauertemperatur von etwa 180 °C und Temperaturspitzen bis etwa 230 °C ausgesetzt wurde, konnte kein Ausfall der Verbindung festgestellt werden. Es ist daher zu erwarten, dass bei Einsatz der erfindungsgemäß ausgestalteten Verbindung die Betriebssicherheit weiter deutlich verbessert werden kann.Extensive field tests have proven that the inventively configured compound withstands thermal cycling in a temperature range between about -40 ° C and + 190 ° C, with strong mechanical vibration load and high humidity for a long time. Even if the connection was exposed for many hours to a continuous temperature of about 180 ° C and temperature peaks up to about 230 ° C, no failure of the connection could be detected. It is therefore to be expected that, when using the compound designed according to the invention, the reliability of operation can be further improved significantly.

Weitere Vorteile ergeben sich aus den Unteransprüchen, der Beschreibung und der Zeichnung.Further advantages emerge from the subclaims, the description and the drawing.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung wird nachstehend unter Bezug auf die Zeichnung näher erläutert.An embodiment of the invention will be explained below with reference to the drawing.

Es zeigen:

  • Figur 1 eine Aufsicht auf ein konfektioniertes Kabel;
  • Figur 2 eine Seitenansicht eines konfektionierten Kabels;
  • Figur 3 einen Längsschnitt durch das in Figur 1 dargestellte Kabel;
  • Figur 4 einen Querschnitt durch das in Figur 1 dargestellte Kabel.
Show it:
  • FIG. 1 a view of a prefabricated cable;
  • FIG. 2 a side view of a prefabricated cable;
  • FIG. 3 a longitudinal section through the in FIG. 1 illustrated cables;
  • FIG. 4 a cross section through the in FIG. 1 illustrated cable.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Die erfindungsgemäße Verbindung wird im Folgenden unter Bezug auf die Zeichnung beispielhaft anhand eines Ausführungsbeispiels in Gestalt eines mit einem Kabelschuh konfektionierten Kabels erläutert.The connection according to the invention will be explained below with reference to the drawing by way of example with reference to an exemplary embodiment in the form of a cable assembled with a cable lug.

Figur 1 zeigt dabei eine Aufsicht auf das mit einem Kabelschuh 2 konfektionierte Kabel 1. Figur 2 zeigt das in Figur 1 dargestellte Kabel in einer Seitenansicht. Dabei ist das erste metallische Bauelement der vorzugsweise aus Kupfer oder einer Kupferverbindung bestehende Kabelschuh 2, der vorzugsweise mit einer aus NiP bestehenden Kontaktschicht bedeckt ist, die in der Zeichnung nicht detailliert dargestellt ist. Das zweite metallische Bauelement im Sinne der Erfindung ist ein Kabel 1, das ein von einem Mantel 1.2 umhüllten Leiter 1.1 aus Aluminium umfasst. Die metallischen Komponenten 1 und 2 sind über eine vorzugsweise durch Ultraschallschweißen hergestellte Schweißverbindung miteinander verbunden. Die Schweißstelle ist von einem Mantel aus Isolierstoff 3 umfasst, der streckenweise auch den Mantel 1.2 des Kabels 1 und den Kabelschuh 2 umschließt. FIG. 1 shows a view of the prefabricated with a cable lug 2 cable. 1 FIG. 2 shows that in FIG. 1 illustrated cable in a side view. In this case, the first metallic component of the preferably made of copper or a copper compound cable lug 2, which is preferably covered with a contact layer consisting of NiP, which is not shown in detail in the drawing. The second metallic component in the sense of the invention is a cable 1, which comprises a conductor 1.1 of aluminum covered by a jacket 1.2. The metallic components 1 and 2 are over a preferably welded joint produced by ultrasonic welding. The weld is covered by a jacket made of insulating material 3, which partially encloses the jacket 1.2 of the cable 1 and the cable lug 2.

Figur 3 zeigt einen Längsschnitt durch das in Figur 1 dargestellte konfektionierte Kabel 1. FIG. 3 shows a longitudinal section through the in FIG. 1 shown prefabricated cable. 1

Figur 4 zeigt einen Querschnitt durch das in Figur 1 dargestellte konfektionierte Kabel 1. FIG. 4 shows a cross section through the in FIG. 1 shown prefabricated cable. 1

Im Folgenden wird ein vorteilhaftes Verfahren für die Herstellung der erfindungsgemäßen Verbindung beispielhaft anhand der Herstellung eines Kabels 1 mit Kabelschuh 2 beschrieben. Das Kabel 1 besteht aus Aluminium und ist mit einem aus einem Polyorganosiloxan (HTV Silikon) bestehenden Mantel 1.2 umgeben. Der Kabelschuh 2 besteht aus Kupfer, das mit einer Kontaktschicht aus NiP von etwa 0,3 bis etwa 5 µm Dicke, insbesondere 0,5 bis 3 µm Dicke, bedeckt ist. In dem Verbindungsbereich wird durch Entfernung des Silikonmantels 1.2 der aus Aluminium bestehende Leiter 1.1 freigelegt. Die Verbindung zwischen dem Kabelschuh 2 und dem Aluminiumkabel 1 erfolgt vorzugsweise durch Ultraschallschweißen. Der Silikonmantel 1.2 des Kabels 1 wird zunächst mittels Zellstoff und Isopropanol gereinigt. Anschließend erfolgt eine Oberflächenaktivierung des Kabels 1 in dem Verbindungsbereich und des Kabelschuhs 2 in einem isolierten Atmosphärenplasma. Anschließend wird der Verbindungsbereich mit Polyorganosiloxan (2k-LSR, Flüssigsilikon, 2 Komponenten) umspritzt, dass anschließend bei einer Temperatur von etwa 160°C bis etwa 210 °C, insbesondere bei einer Temperatur von etwa 170 °C bis etwa 210 °C, vernetzt wird.In the following, an advantageous method for the production of the compound according to the invention is described by way of example with reference to the production of a cable 1 with cable lug 2. The cable 1 is made of aluminum and is surrounded by a jacket 1.2 consisting of a polyorganosiloxane (HTV silicone). The cable lug 2 is made of copper, which is covered with a contact layer of NiP of about 0.3 to about 5 microns thick, in particular 0.5 to 3 microns thick. In the connection region, the conductor 1.1 made of aluminum is uncovered by removal of the silicone sheath 1.2. The connection between the cable lug 2 and the aluminum cable 1 is preferably carried out by ultrasonic welding. The silicone sheath 1.2 of the cable 1 is first cleaned by means of pulp and isopropanol. Subsequently, a surface activation of the cable 1 takes place in the connection region and the cable lug 2 in an isolated atmosphere plasma. Subsequently, the connection region is overmolded with polyorganosiloxane (2k-LSR, liquid silicone, 2 components), which is subsequently crosslinked at a temperature of about 160 ° C. to about 210 ° C., in particular at a temperature of about 170 ° C. to about 210 ° C. becomes.

Nachfolgende Untersuchungen der Verbindungsstelle haben gezeigt, dass das aufgebrachte 2k-Silikon (LSR) sich mit dem 1k-Silikon (HTV) des Kabelmantels verbunden hat und vorteilhaft eine dauerfeste feuchtigkeitsdichte Verbindung eingegangen ist. Auch zwischen der NiP-Schicht des Kabelschuhs und dem aufgebrachten 2k-Silikon wurde nach Vernetzung eine außerordentlich feste feuchtigkeitsundurchlässige Verbindung festgestellt.Subsequent investigations of the joint have shown that the applied 2k silicone (LSR) has bonded to the 1k silicone (HTV) of the cable sheath and has advantageously undergone a durable moisture proof joint. Also, between the NiP layer of the cable lug and the applied 2K silicone, after crosslinking, an extremely strong moisture-impermeable compound was found.

Claims (4)

  1. Connection between a first metallic component (2) and a second metallic component wrapped by a sheath (1.2), which second metallic component forms a conductor (1.1), the first and the second metallic component (2, 1) being connected to one another by a welded connection and respectively a section of the first metallic component (2) and an at least one section of the sheath (1.2) comprising part of the second metallic component are surrounded by an applied insulating material layer (3), and wherein the insulating material layer (3) is encapsulated and meshed by the action of heat to the sheath (1.2) so that the welding point is surrounded by a sheath made of the insulating material (3), the first metallic component (2) being a cable lug and having a receiving region surrounding the conductor (1.1) through which the conductor (1.1) extends, characterized in that the sheath (1.2) consists of a polyorganosiloxane, namely HTV silicone, and the applied insulating material layer (3) consists of a polyorganosiloxane, namely liquid silicone, wherein, for surface activation, a connecting region between the cable lug (2) and the conductor (1.1) and the part of the sheath (1.2) to be encapsulated were exposed to an insulated atmospheric plasma before the encapsulation and subsequently meshed at a temperature of approximately 160°C to approximately 210°C.
  2. Connection according to claim 1, characterized in that the first metallic component (2) consists of copper and the second metallic component (1) consists of aluminium.
  3. Connection according to one of the preceding claims 1 or 2, characterized in that a contact layer of NiP is applied to the first metallic component (2).
  4. Method for producing a connection according to claims 1 to 3 between a first metallic component (2) and a metallic conductor (1.1) of a cable (1), wrapped by a sheath (1.2), wherein the sheath (1.2) of the conductor (1.1) consists of a polyorganosiloxane, namely HTV silicone, characterized by the following method steps:
    a) The first metallic component (2) is covered with a contact layer;
    b) An end piece of the conductor (1.1) detached in pieces from its sheath is connected to the first metallic component (2) by a welded joint;
    c) A part of the sheath (1.2) of the cable to be later encapsulated with an insulating material (3) is cleaned with isopropanol;
    d) the connecting region between the first and the second metallic component and the partial region of the sheath (1.2) of the cable (1) to be overmoulded are exposed to an insulated atmospheric plasma for surface activation;
    e) the connecting region and at least a partial region of the sheath (1.2) of the cable (1) are encapsulated with an insulating material (3), the insulating material (3) consisting of a polyorganosiloxane, namely liquid silicone;
    f) the insulating material (3) is meshed by heating at a temperature of about 160°C to about 210°C on the sheath (1.2).
EP13705742.8A 2012-02-26 2013-02-06 Connection of a first metal component to a covered second metal component Active EP2817854B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012003537 2012-02-26
DE102012007870A DE102012007870A1 (en) 2012-02-26 2012-04-18 Connection of a first metallic component with a coated second metallic component
PCT/EP2013/052271 WO2013124151A1 (en) 2012-02-26 2013-02-06 Connection of a first metal component to a covered second metal component

Publications (2)

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EP2817854A1 EP2817854A1 (en) 2014-12-31
EP2817854B1 true EP2817854B1 (en) 2019-07-31

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US (1) US9312647B2 (en)
EP (1) EP2817854B1 (en)
JP (1) JP2015508219A (en)
KR (1) KR20140127900A (en)
CN (1) CN203312468U (en)
BR (1) BR112014012722A8 (en)
DE (2) DE102012007870A1 (en)
RU (1) RU2014135921A (en)
WO (1) WO2013124151A1 (en)

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FR3000619A1 (en) * 2013-07-01 2014-07-04 Leoni Wiring Systems France Electrical connection element for electrically connected to connection terminal of electrical circuit for car, has end of terminal including unit for connection with other ends of another terminal for assembly between terminals
EP2899810A1 (en) 2014-01-24 2015-07-29 Intercable GmbH Cable lug
WO2015154807A1 (en) * 2014-04-10 2015-10-15 Kromberg & Schubert Gmbh Metal component, and method for producing a metal component
DE102014009467A1 (en) * 2014-06-30 2015-12-31 Auto-Kabel Management Gmbh Electrical connection, process for their preparation and use of a protective lacquer
JP6645329B2 (en) * 2016-04-13 2020-02-14 株式会社オートネットワーク技術研究所 Wire with mold
DE102017113837B3 (en) 2017-06-22 2018-03-29 Lisa Dräxlmaier GmbH METHOD FOR SEALING A JOINT AREA OF AN ELECTRICAL CONNECTION ASSEMBLY AND ELECTRICAL CONNECTION ASSEMBLY
EP3579344A1 (en) * 2018-06-07 2019-12-11 Gebauer & Griller Kabelwerke Gesellschaft m.b.H. Method for overmoulding of cable shoes with complex geometries

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Also Published As

Publication number Publication date
RU2014135921A (en) 2016-04-20
DE202012008242U1 (en) 2012-11-09
KR20140127900A (en) 2014-11-04
BR112014012722A2 (en) 2017-06-13
EP2817854A1 (en) 2014-12-31
US20140370763A1 (en) 2014-12-18
JP2015508219A (en) 2015-03-16
US9312647B2 (en) 2016-04-12
CN203312468U (en) 2013-11-27
WO2013124151A1 (en) 2013-08-29
BR112014012722A8 (en) 2017-06-20
DE102012007870A1 (en) 2013-08-29

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