WO2010124948A1 - Élément destiné au guidage d'un courant électrique entre un matériau en alliage al et une pièce de contact en alliage cu, procédé de fabrication correspondant - Google Patents

Élément destiné au guidage d'un courant électrique entre un matériau en alliage al et une pièce de contact en alliage cu, procédé de fabrication correspondant Download PDF

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Publication number
WO2010124948A1
WO2010124948A1 PCT/EP2010/055063 EP2010055063W WO2010124948A1 WO 2010124948 A1 WO2010124948 A1 WO 2010124948A1 EP 2010055063 W EP2010055063 W EP 2010055063W WO 2010124948 A1 WO2010124948 A1 WO 2010124948A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
contact piece
layer
mediator layer
alloy
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
PCT/EP2010/055063
Other languages
German (de)
English (en)
Inventor
Oliver Stier
Christian Urbanke
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2010124948A1 publication Critical patent/WO2010124948A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0016—Soldering of electronic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • B23K1/203—Fluxing, i.e. applying flux onto surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • B23K1/206—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B23K2101/38—Conductors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/12—Copper or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/18—Dissimilar materials

Definitions

  • the invention relates to a component for guiding an electric current of Al or an Al-containing alloy, comprising at least one contact piece of Cu, or a Cu-base alloy, said contact piece is materially connected to the component. Furthermore, the invention relates to a method for producing a material connection between a component for guiding an electric current of Al or an Al-containing alloy and a contact piece made of Cu or a Cu-based alloy.
  • a component of the type specified in the form of a busbar is known, for example, according to US 6,109,983.
  • This busbar is provided for example at its end with a contact piece. While the busbar is made of Al, the contact piece is made of Cu.
  • the contact piece is designed like a clamp and can therefore be pushed by means of a ge ⁇ suitable tool through the end of the busbar.
  • the inner leg of the contact piece are provided with egg ⁇ ner silver coating and can be used in a following mounting to the production step to the busbar ver ⁇ welded. In this way, a material- locking connection is formed, so that a method for producing such a material connection of the type mentioned above is likewise described in US Pat. No. 6,109,983.
  • the object is to provide a component for guiding an electric current such.
  • Example to provide a busbar and a method for its production, in which with comparatively inexpensive materials a comparatively Reliable functioning of the component is ensured with respect to the current conduction between the component and its contact pieces.
  • the initially mentioned component ⁇ he inventively characterized that there is a cohesive Verbin ⁇ dung from a braze joint wherein the braze joint is formed in each case between the contact piece and a promoter layer on the component.
  • the inventions dung proper construction of the component has the advantage that, in particular, Al can be selected for the material of the component, a relatively inexpensive Me ⁇ tall. Normally, however, this metal is not suitable for reliable contacting with other current-carrying components, although its current-carrying capacity is sufficient for conducting the current within the component.
  • the contact areas of the component are mechanically stressed too much in terms of their pressure stability, so that in this area can not be dispensed with a use of Cu or Cu base alloys.
  • the problem which normally arises in the mechanical connection of Cu or Cu-based alloys with metals such as Al is, according to the invention circumvented by an appropriate promoter layer for a Hartlötver ⁇ binding is provided on the component.
  • the intermediate layer can be applied to the component with sufficient adhesion for the application.
  • the contact piece is soldered to the intermediary layer, which brings the necessary requirements for this purpose.
  • the material pairings available for selection consisting of the material of the intermediate layer, the brazing material and the contact piece, are generally known and can be selected depending on the application.
  • Al-containing alloys are to be understood as meaning those alloys which contain Al as a main alloying constituent of more than 10% by weight.
  • more than one contact piece can also be soldered to the component.
  • at least two Kon ⁇ clock pieces so that the current can be initiated at a location of the component and removed again at another point of the component (busbars are generally at least at their ends provided with contact pieces).
  • the mediator layer consists of Cu or a Cu-based alloy. It is particularly advantageous that the verlö- to Tenden partner (contact piece and component) provide at least beauge ⁇ starting similar metals as a surface for soldering available. Soldering by brazing is therefore particularly unproblematic.
  • brazing alloys based on Ag or Cu in accordance with the standard DIN EN 1044 can be used.
  • Lot ⁇ materials are to be understood which have melting temperatures above about 450 0 C.
  • the structure of the mediator layer is clawed to the structure of the component.
  • the structure of the mediator layer is clawed to the structure of the component.
  • the component is coated with an electrically insulating passivation layer as in the case of Al as a material, by reducing the same, a reduction in the electrical contact resistance can be achieved.
  • the contact piece is fitted in a recess of the component. On the one hand, this increases the reliability of the solder joint by increasing the surface area available for the solder joint. In addition, the depression helps to accurately connect the contact piece with the component.
  • a solution of the object is also achieved with the above-angegebe- NEN method characterized in that the component to be produced in the region of material-locking connection with a promoter layer is coated and then a braze joint is created between the piece and the Kon ⁇ clock promoter layer.
  • This is only possible through the inventive single set of promoter layer without problems, as the United ⁇ mid layer one hand, adheres well to the component and to ⁇ the other hand, provides a suitable surface for brazing Availability checked ⁇ supply.
  • the intermediary layer is coated with a hard solder layer and the latter in the He ⁇ generation of the braze is melted.
  • a precise metering of material can take place by coating the mediator layer with a brazing filler metal.
  • This coating process can also be used to create a braze layer on the mediator layer. It is particularly advantageous if the coating of the mediator layer and / or the brazing layer is carried out by cold gas spraying.
  • This method is advantageously characterized in that particles of the coating material are accelerated at supersonic speed to the surface to be coated. The adhesion of the coating particles on the surface is due to their kinetic energy, this process can be supported by an entry of thermal energy into the particles. In any case, however, melting of the particles for the purpose of their deposition on the surface is avoided.
  • the high kinetic energy of coating particles must ⁇ additionally the advantage that a comparatively good adhesion promoting layer can be achieved on the component.
  • the kinetic energy of the particles is then used in particular ⁇ a way that the surface of the component to be coated is deformed, whereby a clawing of the structure of the intermediary layer and the component can be achieved.
  • Such an applied intermediate layer advantageously has a very good adhesion.
  • the cold gas spraying can also be used to clean the surface of the component at least in the area to be coated before coating.
  • the kinetic energy input into the cold gas jet is reduced so much that the coating particles do not adhere to the surface of the component, but attack this surface.
  • the effect is comparable to that of sandblasting, in particular the passivation layer of aluminum oxide on the component can be removed.
  • This advantageously reduces the contact resistance between the component and the mediator layer.
  • a depression is made in the component, into which the contact piece is fitted before generating the brazed joint.
  • FIGS 1 to 3 different stages of an embodiment of the component according to the invention using various process steps of an embodiment of the method according to the invention.
  • FIG. 1 shows the method step that pretreatment of the groove bottom 15 of the recess 12 is performed with a cold gas jet 14 which is produced with a cold gas injection device (not shown).
  • a cold gas jet 14 which is produced with a cold gas injection device (not shown).
  • an aluminum oxide (passivation layer) not shown in more detail is removed from the surface of the component 11.
  • the particles in the cold gas jet 14 do not adhere but are deflected at the surface.
  • FIG. 2 shows a method step in which a layer sequence is produced by the cold gas jet 14 in the depression 12.
  • First ei ⁇ ne intermediary layer (not shown) formed on the bottom of the groove 15 16th
  • a solder layer 17 of a silver-based or copper-based brazing alloy is applied to the intermediate layer 16.
  • the energy input into the cold gas jet 14 has been increased so that the particles transported in the cold gas jet remain on the surface to be coated.
  • the finished component 11 can be seen, which is connected via a solder joint 18 with the contact piece 19.
  • the solder connection has been produced by melting the solder layer 17 produced in the production step according to FIG. Trained as a busbar component 11 can now be connected via the contact piece 19 with another current-carrying component.
  • a bore 20 is provided, by means of which a screw connection with the partner component, not shown, of the busbar can be produced.
  • This screw provides a required contact pressure of the contact piece on the adjacent component in order to ensure the required contact pressure for the transmission of the current.
  • the contact piece 19 has a sufficient compressive strength for the production of this screw connection.
  • the component 11 itself has material properties that would not meet these requirements. The detail enlargement in FIG.
  • an interface 21 between the material of the component 11 and the mediator layer 16 is increased by the fact that the structure of the mediator layer is clawed to the structure of the component 11. Due to the method, this can be achieved by production by means of cold gas spraying, in that the surface of the component 11 is plastically strongly deformed by the incident cold gas jet or the particles contained therein.
  • a round passage through the busbar (component 11) may also be provided, the wall of which is indicated by a dot-dash line 25.
  • This wall can be seen in a manner not shown in the manner described above with a mediator layer and optionally also with a solder layer ver ⁇ . Subsequently, a cylindrical contact piece is fitted into the opening and soldered. The latter may also have a bore for ease of assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

L'invention concerne un élément (11) tel qu'une barre omnibus (11), destiné au guidage d'un courant électrique, cette barre étant en aluminium ou en alliage Al et comportant au moins une pièce de contact (19) en cuivre ou en alliage Cu. Selon l'invention, la pièce de contact (19) est reliée à la barre omnibus (11) par une soudure (18), une couche de liaison (16) étant utilisée pour améliorer la soudure. Ainsi, il est avantageusement possible d'utiliser un matériau (Al) peu onéreux pour fabriquer la barre omnibus, la résistance à la pression des pièces de contact (19) étant assurée par le choix du matériau (Cu). L'invention porte également sur la fabrication de la couche de liaison (16) par projection à froid, qui provoque une interpénétration au niveau d'une interface (21) entre la barre omnibus (11) et la couche de liaison (16), d'où l'excellente adhésion de la couche de liaison (16).
PCT/EP2010/055063 2009-04-30 2010-04-16 Élément destiné au guidage d'un courant électrique entre un matériau en alliage al et une pièce de contact en alliage cu, procédé de fabrication correspondant Ceased WO2010124948A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009019779A DE102009019779A1 (de) 2009-04-30 2009-04-30 Bauteil zur Führung eines elektrischen Stromes wie Stromschiene und Verfahren zur dessen Herstellung
DE102009019779.6 2009-04-30

Publications (1)

Publication Number Publication Date
WO2010124948A1 true WO2010124948A1 (fr) 2010-11-04

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Family Applications (1)

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PCT/EP2010/055063 Ceased WO2010124948A1 (fr) 2009-04-30 2010-04-16 Élément destiné au guidage d'un courant électrique entre un matériau en alliage al et une pièce de contact en alliage cu, procédé de fabrication correspondant

Country Status (2)

Country Link
DE (1) DE102009019779A1 (fr)
WO (1) WO2010124948A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20120235A1 (it) * 2012-12-14 2014-06-15 Cadore Arredo Di Unterberger Alessa Ndra & C Snc Procedimento per la saldatura di componenti in alluminio o in leghe di rame a prodotti in alluminio

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017003977B4 (de) * 2017-04-25 2025-05-15 e.solutions GmbH Gehäusebauteil für ein elektronisches Gerät, Verfahren zum Herstellen des Gehäusebauteils und elektronisches Gerät mit dem Gehäusebauteil

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513365A (en) * 1945-05-18 1950-07-04 Burndy Engineering Co Inc Soldered aluminum-to-copper connection
US3251128A (en) * 1963-06-18 1966-05-17 Allis Chalmers Mfg Co Method of applying a low resistance contact to a bus
JPS56109157A (en) * 1980-02-04 1981-08-29 Toshiba Corp Brazed structural body of al material and cu material
US6109983A (en) 1997-12-24 2000-08-29 Schneider Electric Sa Bar for an electricity distribution duct
DE10320740A1 (de) * 2003-05-09 2004-12-02 Newspray Gmbh Verfahren zum Verlöten zweier Teile
DE102007025268A1 (de) * 2007-05-30 2008-12-11 Auto-Kabel Management Gmbh Kraftfahrzeugenergieleiter
EP2175532A2 (fr) * 2008-09-03 2010-04-14 Adensis GmbH Liaison d'une pièce en aluminium et d'une pièce en cuivre

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513365A (en) * 1945-05-18 1950-07-04 Burndy Engineering Co Inc Soldered aluminum-to-copper connection
US3251128A (en) * 1963-06-18 1966-05-17 Allis Chalmers Mfg Co Method of applying a low resistance contact to a bus
JPS56109157A (en) * 1980-02-04 1981-08-29 Toshiba Corp Brazed structural body of al material and cu material
US6109983A (en) 1997-12-24 2000-08-29 Schneider Electric Sa Bar for an electricity distribution duct
DE10320740A1 (de) * 2003-05-09 2004-12-02 Newspray Gmbh Verfahren zum Verlöten zweier Teile
DE102007025268A1 (de) * 2007-05-30 2008-12-11 Auto-Kabel Management Gmbh Kraftfahrzeugenergieleiter
EP2175532A2 (fr) * 2008-09-03 2010-04-14 Adensis GmbH Liaison d'une pièce en aluminium et d'une pièce en cuivre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20120235A1 (it) * 2012-12-14 2014-06-15 Cadore Arredo Di Unterberger Alessa Ndra & C Snc Procedimento per la saldatura di componenti in alluminio o in leghe di rame a prodotti in alluminio

Also Published As

Publication number Publication date
DE102009019779A1 (de) 2010-11-11

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