EP2880716A1 - Métallisation électrique des trous réduisant au minimum les contraintes - Google Patents

Métallisation électrique des trous réduisant au minimum les contraintes

Info

Publication number
EP2880716A1
EP2880716A1 EP13739734.5A EP13739734A EP2880716A1 EP 2880716 A1 EP2880716 A1 EP 2880716A1 EP 13739734 A EP13739734 A EP 13739734A EP 2880716 A1 EP2880716 A1 EP 2880716A1
Authority
EP
European Patent Office
Prior art keywords
contact element
section
contact
plug
composite material
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Withdrawn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
EP13739734.5A
Other languages
German (de)
English (en)
Inventor
Michael Guyenot
Friedhelm Guenter
Roumen RATCHEV
Reiner Ramsayer
Andreas Fix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2880716A1 publication Critical patent/EP2880716A1/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Withdrawn legal-status Critical Current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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • 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
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

  • Stress minimizing electrical feedthrough DE 10 2004 030 388 A1 relates to an article with a coating of electrically conductive polymer and a process for its production.
  • printed circuit boards are provided with a copper layer in which electrical conductors are produced by structuring.
  • a layer of an electrically conductive polymer is applied to the copper layer.
  • the copper or copper alloy layer is located between an electrically conductive base layer and a layer containing the conductive polymer.
  • DE 10 2009 001 461 A1 relates to a method for producing an electronic assembly.
  • the assembly is formed by two microelectrical components which are connected together.
  • the connection is established by means of a plurality of dielectric components, each of which has at least one conductor track.
  • Printed wiring is created by introducing a continuous cavity into the dielectric device and then filling it with an electrically conductive material.
  • the filler may be an electrically conductive polymer.
  • the lead wires of wired components and male connectors are inserted through openings in the printed circuit board.
  • the devices to be contacted may be capacitors, transistors, resistors, integrated circuits (IC's) and the like.
  • the listed components require different preparations, in which the connecting wires, which are also referred to as connection legs, are bent and cut to fit in a predetermined by the circuit board hole pattern or opening pattern.
  • the soldering of the components takes place.
  • the solder joint usually arises on the underside of the PCB.
  • the wave soldering or Schwalllöt compiler can be used. When wave soldering the circuit board is driven with its underside on a solder wave, which in contact with the component, the solder joint to the
  • Base creates.
  • a special version of this process is selective soldering. In this case, not only the entire assembly, but only a small part thereof - in some cases only a single component - is soldered by means of a "miniature wave.”
  • the selective soldering process is often the only possible soldering process when leaded components have to be soldered.
  • solder joints produced by the ⁇ - manufacturing process must be able to withstand a large number of temperature changes, without the function of the solder joint, on the one hand in terms of
  • thermomechanically induced stresses occur in the solder joints, which can lead to damage to the solder joints. These loads are due to both geometry factors in relation to all
  • THT soldering technology Due to the development trend towards the intramodular construction of control units, individual modules and not just individual components are connected to the actual circuit board by means of THT soldering technology. Especially for applications in the automotive sector, THT solder joints have to endure many temperature changes, without the function of the solder joint being significantly impaired in terms of their electrical conductivity and mechanical hold. Due to the temperature changes occur in the solder joints
  • thermomechanically induced loads that can lead to pre-damage of the solder joints.
  • the loads are determined by geometry factors of all components as well as by transient thermal loads.
  • a majority of components that are soldered by applications of the THT process, are soldered on one side power strips, which are preferably used in electronic control units.
  • Inserted pins, which are also referred to as pins, are made of bronze, which are mostly punched out of ribbons.
  • the plug-side material corresponds to the previously required material classes of car manufacturers.
  • solder-side materials are freely definable, that is, for example, metals or metal alloys based on aluminum for Are used, which are either directly solderable or can be made solderable by appropriate coating, for example, with a NiSn coating.
  • this aluminum-copper composite is an extruded profile comprising a Cu section and an Al section in a common plane.
  • the Cu section and the AI section may, on the one hand, lie in a common, horizontally extending plane, but said sections may also be arranged in mutually different, horizontally extending planes.
  • Both embodiments of the extruded profile have in common that the Cu section and the AI section are connected to one another within a transition region,
  • the contact element is made of an Al / Cu composite material, wherein the Cu portion forms the plug side of the contact element and the AI section of the Al / Cu composite material, the solder side of the contact element.
  • the contact elements are punched out of the Al / Cu material composite.
  • This offers the advantage of a very rational mass production and a very high utilization of the Al / Cu composite material with regard to accumulating residual material.
  • the inventively proposed from the Al / Cu composite material punched contact element has on the connector side a plug-side geometry in the form of
  • the connector pins form a composite material and can be interconnected by individual webs.
  • a lot-side geometry can be formed, which can be formed for example in the form of a contact bond with individual contact wires. It can the individual contact wires of the contact composite have the same lengths or each other different lengths.
  • the plug side of the contact element is further formed of a copper alloy, while on the solder side, an aluminum alloy is used, which has a lower stiffness with respect to the modulus of elasticity and a larger
  • Carrier substrate is located, cushioned.
  • the contact element as a whole has a longer damage-free time and thus a longer life.
  • the contact element made of an Al / Cu composite material whose Cu section and its AI section run in a common horizontal plane is a production technology particularly efficient production on a large scale of
  • Pre-fabricating the strand material of the Al / Cu composite material also the ability to accommodate different installation geometries of the contact element.
  • the Cu portion and the Al portion may not only be made to lie in a common plane, but there is a possibility that the two portions mentioned may also be in mutually different horizontal planes.
  • the two sections i. the Cu section and the Al section of the Al / Cu composite material of the extruded profile are interconnected within a transition region, i. go into each other.
  • the transition region is such that it also influences the mechanical stresses acting on the extruded profile during a punching process or the like.
  • FIG. 1 shows an Al / Cu composite material whose Cu section and its Al section lie in a common horizontal plane
  • FIG. 2 shows a contact element with a plug-side and a solder-side geometry
  • FIG. 3 shows a section through an Al / Cu composite material, in which the Al section and the Cu section lie in mutually different horizontal planes.
  • Embodiments The illustration according to FIG. 1 shows, in a perspective top view, an Al / Cu material composite whose Cu section and its Al section extend in a common horizontal plane.
  • an extruded profile 40 of an Al / Cu composite material 36 comprises a Cu section 42 and an Al section 44.
  • Said sections 42 and 44 are represented by aluminum alloys or Cu alloys, which are interconnected within a transition region 38.
  • the illustration according to FIG. 1 shows that in the transition region 38 between the Cu section 42 and the AI section 44 in a horizontal plane 46, an arrow-shaped end 42 of the Cu section 42 in a complementarily configured receptacle 54 of the Al section 44 protrudes.
  • the two sections i.
  • the Cu section 42 and the AI section 44 are connected to one another in a material and non-positive manner, so that an Al / Cu composite material 36 consisting of the aforementioned sections 42, 44 results, which also contains mechanical stresses which occur, for example, in a punching process of the invention proposed contact element 10 acting on the Al / Cu composite material 36, withstand.
  • the Cu section 42 represents a plug side 14 of a contact element 10
  • a solder side 16 of the contact element 10 is formed by the Al section 44 of the Al / Cu composite material 36.
  • the transition region 38 with arrow-shaped end 52 and complementarily configured receptacle 54 can also others
  • Transition geometries in the transition region 38 between the Cu section 42 and the AI section 44 of the Al / Cu composite material 36 may be formed.
  • FIG. 2 shows a plan view of a contact element proposed according to the invention from the Al / Cu material composite according to FIG.
  • the plan view according to FIG. 2 shows that the contact element 10 comprises a number of plug pins 12 on its plug side 14 formed by the Cu section 42.
  • the individual plug pins 12 on the plug side 14 are interconnected by webs 26 and form a plug-side geometry 32.
  • the plug-side geometry 32 is formed by the already mentioned in connection with Figure 1 Cu section 42 of
  • Extruded profiles 40 formed as Al / Cu composite material 36 given.
  • the webs 26 are provided with individual openings 30.
  • the contact element 10 comprises the solder side 16, which is provided by the Al section 44 of the Al / Cu composite material 36. From the illustration according to FIG. 2 it can be seen that in this area, i. has on the solder side 16 contact elements 10 individual contact wires 56.
  • the individual contact wires 56 include a soldering tip 28, wherein the individual contact wires 56 may be formed in different lengths. From the illustration according to FIG. 2, it can be seen that the individual contact wires 56 in the representation according to FIG. 2 can have either a first length, a second length 22 and a third length 24.
  • the contact wires 56 could also have a uniform length, irrespective of the first length 20, the second length 22 and the third length 24.
  • the contact wires 56 form a contact bond 18 and represent a solder-side geometry 34 of the contact element 10.
  • the representation according to FIG. 2 shows that the soldering tips 28 of the contact wires 56, which represent the solder-side geometry 34, are made of aluminum.
  • the contact wires 56 of the contact composite 18 are formed in the Al portion 44 of the Al / Cu composite material 36.
  • the soldering tips 28 are formed from the Al portion 44 of the Al / Cu composite material 36, and have a lower rigidity with respect to the modulus of elasticity, and a larger coefficient of thermal expansion.
  • the connector pins are still made of a Cu alloy, which forms the Cu section 42 of the Al / Cu composite material 36.
  • Plug pins 12 in the region of the plug side 14 of the contact element 10, for example by bending, rotation and tensile stress and the like, is part of the damaging loads by the much more flexible properties aluminum material of the solder side 16, formed by the AI section 44 of Al / Cu Composite material 36 cushioned, so that a longer damage-free time and thus a longer life of the invention proposed contact element 10 is expected.
  • the illustration according to Figure 2 is a possible embodiment variant of one of the
  • FIG. 3 shows a further possible embodiment variant of the Al / Cu composite material according to the representation in FIG. 1.
  • the Cu section 42 of the Al / Cu composite material 36 and the AI section 44 of the Al / Cu composite material 36 also have the geometry shown in Figure 3.
  • Extruded profile 40 as shown in Figure 3, the transition region 38 between the Cu section 42 and the AI section 44 in the Kröpfungsebene, i. in a vertical plane in which there is a transition from the first horizontal plane 48 into the second horizontal plane 50 of the extruded profile 40 of the Al / Cu composite material 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

L'invention concerne un élément de contact (10) pourvu d'un côté fiche (14) et d'un côté brasage (16) destiné à être mis en contact électrique avec une carte de circuit imprimé ou un substrat de support. L'élément de contact (10) est fabriqué à partir d'un matériau composite en Al/Cu (36) dont la partie en Cu (42) forme le côté fiche (14) et dont la partie en Al (44) forme le côté brasage (16) de l'élément de contact (10).
EP13739734.5A 2012-08-03 2013-07-24 Métallisation électrique des trous réduisant au minimum les contraintes Withdrawn EP2880716A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012213804.8A DE102012213804A1 (de) 2012-08-03 2012-08-03 Belastungsminimierende elektrische Durchkontaktierung
PCT/EP2013/065589 WO2014019905A1 (fr) 2012-08-03 2013-07-24 Métallisation électrique des trous réduisant au minimum les contraintes

Publications (1)

Publication Number Publication Date
EP2880716A1 true EP2880716A1 (fr) 2015-06-10

Family

ID=48832942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13739734.5A Withdrawn EP2880716A1 (fr) 2012-08-03 2013-07-24 Métallisation électrique des trous réduisant au minimum les contraintes

Country Status (5)

Country Link
US (1) US20150194756A1 (fr)
EP (1) EP2880716A1 (fr)
CN (1) CN104521067A (fr)
DE (1) DE102012213804A1 (fr)
WO (1) WO2014019905A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012213812A1 (de) * 2012-08-03 2014-02-06 Robert Bosch Gmbh Einpresskontaktierung
DE102014015805B3 (de) * 2014-10-24 2016-02-18 Isabellenhütte Heusler Gmbh & Co. Kg Widerstand, Herstellungsverfahren dafür und Verbundmaterialband zum Herstellen des Widerstands
DE102020106194A1 (de) * 2020-03-06 2021-09-09 Lear Corporation Elektrischer Verbinder und Verfahren zur Herstellung eines elektrischen Verbinders

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011075044A1 (fr) * 2009-12-16 2011-06-23 Sapa Ab Composant conducteur composite et procédé de fabrication dudit composant

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2226944A (en) * 1938-10-27 1940-12-31 Bell Telephone Labor Inc Method of bonding dissimilar metals
US3134701A (en) * 1961-05-15 1964-05-26 Beryllium Corp Metallic product and method of manufacture thereof
GB1210363A (en) * 1968-08-02 1970-10-28 Berg Electronics Inc Circuit board connector
US4098449A (en) * 1977-03-28 1978-07-04 General Electric Company Terminal connection for aluminum conductor and method of making
US4790780A (en) * 1987-08-17 1988-12-13 Olin Fabricated Metal Products, Inc. Electrical connecting apparatus
US4980245A (en) * 1989-09-08 1990-12-25 Precision Concepts, Inc. Multi-element metallic composite article
DE102004030388A1 (de) 2004-06-23 2006-01-26 Ormecon Gmbh Artikel mit einer Beschichtung von elektrisch leitfähigem Polymer und Verfahren zu deren Herstellung
DE102006031839B4 (de) * 2006-07-07 2009-09-03 Auto-Kabel Management Gmbh Elektrisches Kontaktelement
WO2008027167A1 (fr) * 2006-08-31 2008-03-06 Antaya Technologies Corporation Connecteur en aluminium plaqué
US8632346B2 (en) * 2008-12-03 2014-01-21 Wuerth Elektronik Ics Gmbh & Co. Kg Connection assembly on circuit boards
DE102009001461A1 (de) 2009-03-11 2010-09-16 Robert Bosch Gmbh Verfahren zur Herstellung einer elektronischen Baugruppe
DE102009028273A1 (de) * 2009-08-06 2011-02-10 Robert Bosch Gmbh Kontaktmittel
DE102009042385A1 (de) * 2009-09-21 2011-04-14 Würth Elektronik Ics Gmbh & Co. Kg Multi Fork Einpresspin

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011075044A1 (fr) * 2009-12-16 2011-06-23 Sapa Ab Composant conducteur composite et procédé de fabrication dudit composant

Also Published As

Publication number Publication date
WO2014019905A1 (fr) 2014-02-06
US20150194756A1 (en) 2015-07-09
CN104521067A (zh) 2015-04-15
DE102012213804A1 (de) 2014-02-06

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