EP2923529B1 - Scheibe mit elektrischem anschlusselement und kompensatorplatten - Google Patents

Scheibe mit elektrischem anschlusselement und kompensatorplatten Download PDF

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Publication number
EP2923529B1
EP2923529B1 EP13739210.6A EP13739210A EP2923529B1 EP 2923529 B1 EP2923529 B1 EP 2923529B1 EP 13739210 A EP13739210 A EP 13739210A EP 2923529 B1 EP2923529 B1 EP 2923529B1
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EP
European Patent Office
Prior art keywords
compensator
connection element
electrically conductive
copper
conductive structure
Prior art date
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EP13739210.6A
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German (de)
English (en)
French (fr)
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EP2923529A1 (de
Inventor
Mitja Rateiczak
Bernhard Reul
Klaus SCHMALBUCH
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.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Priority to PL13739210T priority Critical patent/PL2923529T3/pl
Priority to EP13739210.6A priority patent/EP2923529B1/de
Publication of EP2923529A1 publication Critical patent/EP2923529A1/de
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/016—Heaters using particular connecting means

Definitions

  • the invention relates to a disc with an electrical connection element, an economical and environmentally friendly method for their production and their use.
  • the invention further relates to a disc with an electrical connection element for vehicles with electrically conductive structures such as heating conductors or antenna conductors.
  • the electrically conductive structures are usually connected via soldered electrical connection elements with the on-board electrical system. Due to different thermal expansion coefficients of the materials used, mechanical stresses occur during manufacture and during operation, which can load the disks and cause the disk to break.
  • Lead-containing solders have a high ductility, which can compensate occurring mechanical stresses between the electrical connection element and the disc by plastic deformation.
  • the Directive is collectively referred to as the ELV (End of Life Vehicles).
  • the goal is to eliminate extremely problematic components from the products as a result of the massive expansion of disposable electronics.
  • the substances involved are lead, mercury, cadmium and chromium. This includes, among other things, the enforcement of lead-free solders in electrical applications on glass and the introduction of appropriate replacement products for this purpose.
  • connecting elements are preferred in connection with lead-free solder materials used, which have a low coefficient of thermal expansion, preferably of the order of soda lime glass (8.3 x 10 -6 / ° C for 0 ° C - 320 ° C).
  • Such connection elements hardly expand when heated and compensate for the resulting stresses.
  • EP 1 942 703 A2 discloses an electrical connection element to panes of vehicles, wherein the difference of the coefficients of thermal expansion of the disc and the electrical connection element ⁇ 5 x 10 -6 / ° C and the connecting element contains predominantly titanium.
  • the excess of solder mass emerges from the gap between the connection element and the electrically conductive structure.
  • the excess solder mass causes high mechanical stresses in the glass pane. These mechanical stresses eventually lead to breakage of the disc.
  • titanium is poorly solderable. This leads to a poor adhesion of the connection element to the disc.
  • the connection element must also be connected to the on-board electrical system via an electrically conductive material, such as copper, such as by welding. Titanium is badly weldable.
  • EP 2 408 260 A1 describes the use of iron-nickel or iron-nickel-cobalt alloys such as Kovar or Invar, which have a low coefficient of thermal expansion (CTE).
  • CTE coefficient of thermal expansion
  • Invar has such a low thermal expansion coefficient that overcompensation of these mechanical stresses occurs. This leads to compressive stresses in the glass or tensile stresses in the alloy, which, however, are classified as uncritical.
  • connection elements made of copper which were used in conjunction with lead-containing solder masses are not suitable for soldering with the known lead-free solder masses on glass due to their high expansion coefficient.
  • iron or titanium connectors have a lower coefficient of expansion and are compatible with lead-free solder alloys, these materials are much less forgeable.
  • the service life of the for the production of the connection elements required tools, which leads to an increase in production costs.
  • the boundary conditions of the soldering process have to be varied again and again with changing materials and shapes of the connection elements.
  • Various connection elements also have a different mechanical robustness with respect to peel-off forces. A standardization would therefore be desirable to ensure consistent mechanical stability and the same soldering behavior.
  • the object of the present invention is to provide a disk with electrical connection element as well as an economical and environmentally friendly method for their production, wherein critical stresses in the disc are avoided and the manufacturing process is simplified by standardization of the soldering process, regardless of the material and the shape of the connection element ,
  • the object of the present invention is achieved by a disc with at least one connection element with Kompensatorplatten.
  • the disc comprises at least one substrate with an electrically conductive structure on at least a portion of the substrate, at least one compensator plate on at least a portion of the conductive structure, at least one electrical connection element on at least a portion of the Kompensatorplatte and a lead-free solder mass, the Kompensatorplatte over at least connects a contact surface with at least a portion of the electrically conductive structure.
  • the difference between the coefficients of thermal expansion of the substrate and the compensator plates is less than 5 ⁇ 10 -6 / ° C. and the connection element contains copper.
  • the thermal expansion coefficient of the compensator plates is preferably between 9 ⁇ 10 -6 / ° C. and 13 ⁇ 10 -6 / ° C., more preferably between 10 ⁇ 10 -6 / ° C. and 12 ⁇ 10 -6 / ° C., very particularly preferably of 10 x 10 -6 / ° C and 11 x 10 -6 / ° C in a temperature range of 0 ° C to 300 ° C.
  • the connection element is soldered by means of the lead-free solder mass without Kompensatorplatte directly on the electrically conductive structure of the substrate, whereby damage occurs in the substrate in temperature cycling tests. Such damage can not be observed on the disc according to the invention, since the compensator compensates for the stresses occurring.
  • the material of the compensator plates is chosen so that the difference of the thermal expansion coefficients of the substrate and the Kompensatorplatten is less than 5 x 10 -6 / ° C. Thus, when heated, the substrate and compensator plates expand to the same extent and damage to the solder joint is avoided.
  • connection elements Since the usual copper-containing connection elements in the past can be used further no tool change is necessary. Furthermore, copper-containing materials are usually easily deformable.
  • connection elements which are known from the prior art and which can also be used in conjunction with lead-free solder materials, on the other hand, consist of poorly deformable materials such as, for example, steel or titanium. For this reason, the tool life is significantly higher when forming copper-containing connection elements.
  • the use of compensator plates according to the invention thus leads to a reduction in production costs with regard to the forming process.
  • the steel or titanium connection elements which can be soldered according to the prior art with lead-free solder materials have a significantly higher electrical resistance in comparison with the common copper-containing connection elements.
  • the compensator plates form the contact base for Connection elements and other fasteners of all kinds and thus serve not only as a compensator but also as an adapter.
  • the conditions at the soldering point remain constant and the soldering process does not have to be adapted even when changing the shapes and materials of the connection elements.
  • the mechanical conditions remain constant at the solder joint, so that the peel forces are independent of the shape of the connection element.
  • the number of compensator plates used depends on the geometry of the connection element. If the connection element is to be connected to the electrically conductive structure only via a surface, a compensator plate on the side of the connection element which is to be contacted with the electrically conductive structure is sufficient.
  • the electrical connection element is electrically conductively connected to the electrically conductive structure via a first compensator plate and a second compensator plate.
  • the connection element may, for example, be in the form of a bridge, wherein the connection element has two feet, between which lies a raised portion which does not directly contact the electrically conductive structure in a planar manner.
  • the connection element can both have a simple bridge shape and comprise more complex bridge shapes. The two feet of the connecting element lie on the top of each one Kompensatorplatte.
  • the compensator plates have on their underside contact surfaces, with which they are applied over the entire surface of the electrically conductive structure.
  • the compensator plates and the contact surfaces have no corners. Such a design causes both a uniform tensile stress distribution without maximum values at the corners and a uniform solder distribution.
  • the compensator plates include titanium, iron, nickel, cobalt, molybdenum, copper, zinc, tin, manganese, niobium and / or chromium and / or alloys thereof.
  • the compensator plates preferably contain a chromium-containing steel with a chromium content of greater than or equal to 10.5% by weight.
  • Other alloying ingredients like molybdenum, Manganese or niobium lead to improved corrosion resistance or altered mechanical properties, such as tensile strength or cold workability.
  • the compensator plates according to the invention preferably contain at least 66.5 wt .-% to 89.5 wt .-% iron, 10.5 wt .-% to 20 wt .-% chromium, 0 wt .-% to 1 wt .-% carbon , 0 wt .-% to 5 wt .-% nickel, 0 wt .-% to 2 wt .-% manganese, 0 wt .-% to 2.5 wt .-% molybdenum, 0 wt .-% to 2 wt % Niobium and 0% to 1% titanium by weight.
  • the compensator plates may additionally contain admixtures of other elements, including vanadium, aluminum and nitrogen.
  • the compensator plates more preferably contain at least 73% to 89.5% iron, 10.5% to 20% chromium, 0% to 0.5% carbon, by weight , 0 wt .-% to 2.5 wt .-% nickel, 0 wt .-% to 1 wt .-% manganese, 0 wt .-% to 1.5 wt .-% molybdenum, 0 wt .-% bis 1 wt .-% of niobium and 0 wt .-% to 1 wt .-% of titanium.
  • admixtures of other elements may also be included, including vanadium, aluminum and nitrogen.
  • the compensator plates very particularly preferably contain at least 77% by weight to 84% by weight of iron, 16% by weight to 18.5% by weight of chromium, 0% by weight to 0.1% by weight of carbon, 0 wt .-% to 1 wt .-% manganese, 0 wt .-% to 1 wt .-% niobium, 0 wt .-% to 1.5 wt .-% molybdenum and 0 wt .-% to 1 wt. -% titanium.
  • the compensator plates may additionally contain admixtures of other elements, including vanadium, aluminum and nitrogen.
  • Chromium-containing in particular so-called stainless or stainless steel is available at low cost.
  • chromium-containing steel has a high rigidity in comparison to copper and copper alloys, which leads to an advantageous stability of the compensator plates.
  • compensator plates made of chromium-containing steel compared to many conventional connection elements, for example those made of titanium, improved solderability, resulting from a higher thermal conductivity.
  • Materials which are particularly suitable for use as a compensator plate are chromium-containing steels of the material numbers 1.4016, 1.4113, 1.4509 and 1.4510 according to EN 10 088-2.
  • the compensator plates preferably have a material thickness of 0.1 mm to 1 mm, particularly preferably 0.4 mm to 0.8 mm. Within these ranges a sufficient mechanical stability as well as a good compensation of stresses with temperature expansion of the disc is optimally guaranteed.
  • the width and length of the compensator plates can be individually adapted to the connection elements used and the shape of their feet. In order to achieve the particularly advantageous standardization of Kompensatorplatten but particularly preferably round, circular or elliptical shapes, in particular circular shapes used. In a most preferred circular embodiment of Kompensatorplatten they have a diameter of 2 mm to 15 mm, preferably 4 mm to 10 mm.
  • the connecting element preferably contains titanium, iron, nickel, cobalt, molybdenum, copper, zinc, tin, manganese, niobium and / or chromium and / or alloys thereof.
  • a suitable material composition is selected according to its electrical resistance.
  • the terminal comprises 45.0 wt% to 99.9 wt% copper, 0 wt% to 45 wt% zinc, 0 wt% to 15 wt% tin, 0 wt .-% to 30 wt .-% nickel and 0 wt .-% to 5 wt .-% silicon.
  • wt% copper
  • wt% 45 wt% zinc
  • 0 wt .-% to 30 wt .-% nickel and 0 wt .-% to 5 wt .-% silicon In addition to electrolytic copper a variety of brass or bronze alloys are suitable as materials, such as nickel silver or Konstantan.
  • connection element contains 58 wt .-% to 99.9 wt .-% copper and 0 wt .-% to 37.0 wt .-% zinc, in particular 60 wt .-% to 80 wt .-% copper and 20 Wt .-% to 40 wt .-% zinc.
  • connection element is electrolytic copper with the material number CW004A (formerly 2.0065) and CuZn30 with the material number CW505L (formerly 2.0265).
  • connection element has an electrical resistance between 1.0 ⁇ Ohm.cm and 15 ⁇ Ohm.cm, especially preferably between 1.5 ⁇ Ohm.cm and 11 ⁇ Ohm.cm. This results in a particularly advantageous combination of Kompensatorplatten with adapted to the substrate CTE and a connection element with very good electrical conductivity.
  • Connection elements according to the prior art which likewise have a coefficient of expansion matching the substrate, have higher electrical resistances, so that a disadvantageously increased voltage drop occurs.
  • the material thickness of the connecting element is preferably 0.1 mm to 2 mm, particularly preferably 0.2 mm to 1 mm, very particularly preferably 0.3 mm and 0.5 mm.
  • the material thickness of the connection element is constant in its entire area. This is particularly advantageous with regard to a simple production of the connection element.
  • the connecting element is connected via a connecting cable with the on-board electronics of the motor vehicle.
  • the electrical contacting of the connection element with the connection cable can be effected via a solder connection, a welded connection or a crimp connection.
  • connection cables for contacting the connection element are in principle all cables which are known to those skilled in the electrical contacting of an electrically conductive structure.
  • the connection cable can comprise, in addition to an electrically conductive core (inner conductor), an insulating, preferably polymeric sheath, wherein the insulating sheath is preferably removed in the end region of the connection cable in order to allow an electrically conductive connection between the connection element and the inner conductor.
  • the electrically conductive core of the connection cable can contain, for example, copper, aluminum and / or silver or alloys or mixtures thereof.
  • the electrically conductive core can be designed, for example, as a wire stranded conductor or as a solid wire conductor.
  • the cross-section of the electrically conductive core of the connection cable depends on the current carrying capacity required for the use of the pane according to the invention and can be suitably selected by the person skilled in the art.
  • the cross section is for example from 0.3 mm 2 to 6 mm 2 .
  • connection element is electrically conductively connected to the compensator plates, wherein the elements can be connected by means of various soldering or welding techniques.
  • the compensator plates and the connection element are connected by means of electrode resistance welding, ultrasonic welding or friction welding.
  • connection element can also be applied to the compensator plates via a screw or plug connection.
  • a contact can be realized, for example, by a compensator plate with threaded pin, onto which a connection element with threaded sleeve is screwed.
  • connection element covers only a portion of the surface of the compensator plates. A part of the compensator plates thus protrudes laterally below the connection element and is accessible even after attachment of the connection element on the Kompensatorplatten. When soldering the compensator plates on the electrically conductive structure, these protrusions can serve for contacting the compensator plates.
  • an electrically conductive structure is applied, which preferably contains silver, particularly preferably silver particles and glass frits.
  • the electrically conductive structure according to the invention preferably has a layer thickness of from 3 ⁇ m to 40 ⁇ m, more preferably from 5 ⁇ m to 20 ⁇ m, very particularly preferably from 7 ⁇ m to 15 ⁇ m and in particular from 8 ⁇ m to 12 ⁇ m.
  • the Kompensatorplatten on which the connection element is applied are connected over a contact surface over the entire surface with a portion of the electrically conductive structure. The electrical contacting takes place by means of the lead-free solder mass.
  • the electrically conductive structure can serve, for example, for contacting wires or a coating applied to the pane.
  • the electrically conductive structure is mounted, for example in the form of bus bars on opposite edges of the disc.
  • a voltage can be applied across the bus bars mounted on the bus bars, thereby flowing current through the conductive wires or coating from one bus bar to the other and heating the pane.
  • the pane according to the invention is also used in combination with antenna conductors usable or in any other embodiments in which a stable contacting of the disc is needed conceivable.
  • the substrate preferably contains glass, particularly preferably flat glass, float glass, quartz glass, borosilicate glass and / or soda-lime glass.
  • the substrate may also contain polymers, preferably polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polybutadiene, polynitriles, polyesters, polyurethane, polyvinyl chloride, polyacrylate, polyamide, polyethylene terephthalate and / or copolymers or mixtures thereof.
  • the substrate is preferably transparent.
  • the substrate preferably has a thickness of from 0.5 mm to 25 mm, particularly preferably from 1 mm to 10 mm and very particularly preferably from 1.5 mm to 5 mm.
  • the thermal expansion coefficient of the substrate is preferably 8 ⁇ 10 -6 / ° C to 9 ⁇ 10 -6 / ° C.
  • the substrate preferably contains glass, which preferably has a thermal expansion coefficient of 8.3 ⁇ 10 -6 / ° C. to 9 ⁇ 10 -6 / ° C. in a temperature range from 0 ° C. to 300 ° C.
  • a screen printing is applied to the substrate, which covers the contacting of the disc in the installed state of the disc, so that the connection element with Kompensatorplatten from the outside is not visible.
  • the electrically conductive structure is connected to the compensator plates in an electrically conductive manner via the lead-free solder mass.
  • the lead-free solder mass is arranged on the contact surfaces, which are located on the underside of the connection element.
  • the layer thickness of the lead-free solder mass is preferably less than or equal to 600 .mu.m, more preferably between 150 .mu.m and 600 .mu.m, in particular less than 300 microns.
  • the lead-free solder mass is preferably lead-free. This is particularly advantageous with regard to the environmental compatibility of the pane according to the invention with electrical connection element.
  • the term "lead-free solder mass” is to be understood as meaning a solder mass which, in accordance with the EC directive "2002/95 / EC for the restriction of the Use of certain hazardous substances in electrical and electronic equipment "a proportion of less than or equal to 0.1 wt .-% lead, preferably contains no lead.
  • solder mass preferably contains tin and bismuth, indium, zinc, copper, silver or compositions thereof.
  • the proportion of tin in the solder composition according to the invention is 3 wt .-% to 99.5 wt .-%, preferably 10 wt .-% to 95.5 wt .-%, particularly preferably 15 wt .-% to 60 wt. %.
  • the proportion of bismuth, indium, zinc, copper, silver or compositions thereof in the solder composition according to the invention from 0.5 wt .-% to 97 wt .-%, preferably 10 wt .-% to 67 wt .-%, wherein the proportion may be 0 wt .-% of bismuth, indium, zinc, copper or silver.
  • the solder composition may contain nickel, germanium, aluminum or phosphorus at a level of from 0% to 5% by weight.
  • the solder composition of the present invention most preferably contains Bi40Sn57Ag3, Sn40Bi57Ag3, Bi59Sn40Ag1, Bi57Sn42Ag1, In97Ag3, In60Sn36.5Ag2Cu1.5, Sn95.5Ag3.8Cu0.7, Bi67In33, Bi33In50Sn17, Sn77.2 In20Ag2.8, Sn95Ag4Cu1, Sn99Cu1, Sn96.5Ag3.5 , Sn96.5Ag3Cu0.5, Sn97Ag3 or mixtures thereof.
  • the solder mass contains bismuth. It has been shown that a bismuth-containing solder composition leads to a particularly good adhesion of the connecting element according to the invention to the disk, wherein damage to the disk can be avoided.
  • the proportion of bismuth in the solder composition is preferably from 0.5% by weight to 97% by weight, more preferably from 10% by weight to 67% by weight and most preferably from 33% by weight to 67% by weight .-%, in particular from 50 wt .-% to 60 wt .-%.
  • the solder mass preferably contains tin and silver or tin, silver and copper.
  • the solder mass contains at least 35 wt .-% to 69 wt .-% bismuth, 30 wt .-% to 50 wt .-% tin, 1 wt .-% to 10 wt .-% silver and 0 wt % to 5% by weight of copper.
  • the solder mass contains at least 49 wt .-% to 60 wt .-% bismuth, 39 wt .-% to 42 wt .-% tin, 1 wt .-% to 4 wt .-% silver and 0 Wt .-% to 3 wt .-% copper.
  • the solder mass of 90 wt .-% to 99.5 wt .-% tin preferably from 93 wt .-% to 99 wt .-%, particularly preferably from 95 wt .-% to 98 wt. -%.
  • the solder mass preferably contains from 0.5% by weight to 5% by weight of silver and from 0% by weight to 5% by weight of copper.
  • the solder mass emerges with an exit width of preferably less than 1 mm from the intermediate space between the soldering area of the compensator plates and the electrically conductive structure.
  • the maximum exit width is less than 0.5 mm and in particular about 0 mm. This is particularly advantageous with regard to the reduction of mechanical stresses in the disc, the adhesion of the connecting element and the saving of the solder.
  • the maximum exit width is defined as the distance between the outer edges of the soldering area and the point of Lotmasseübertritts, at which the solder mass falls below a layer thickness of 50 microns. The maximum exit width is measured after the soldering process on the solidified solder mass.
  • a desired maximum exit width is achieved by a suitable choice of solder mass volume and perpendicular distance between compensator plates and electrically conductive structure, which can be determined by simple experiments.
  • the vertical distance between compensator plates and electrically conductive structure can be predetermined by a corresponding process tool, for example a tool with an integrated spacer.
  • the maximum exit width may also be negative, that is to say retracted into the intermediate space formed by the soldering area of the compensator plates and the electrically conductive structure.
  • the maximum exit width in the intermediate space formed by the soldering area of the compensator plates and the electrically conductive structure is withdrawn in a concave meniscus.
  • a concave meniscus is created by increasing the perpendicular distance between the spacer and conductive structure during the soldering process while the solder is still liquid.
  • the advantage lies in the reduction of the mechanical stresses in the disc, in particular in the critical range, which is present at a large Lotmasseübertritt.
  • the contact surfaces of the compensator plates on spacers preferably at least two spacers, particularly preferably at least three spacers.
  • the spacers are preferably formed integrally with the Kompensatorplatten, for example by embossing or deep drawing.
  • the spacers preferably have a width of 0.5 ⁇ 10 -4 m to 10 ⁇ 10 -4 m and a height of 0.5 ⁇ 10 -4 m to 5 ⁇ 10 -4 m, particularly preferably 1 ⁇ 10 -4 m to 3 x 10 -4 m.
  • the compensator plates and / or the connection element are equipped with contact elevations, which serve for contacting with the soldering tool during the soldering process.
  • the contact elevations are arranged on the surface of the compensator plates facing away from the substrate opposite the contact surfaces or on the surface of the connection element facing away from the substrate in the region which is located above the compensator plates.
  • the contact elevations are preferably convexly curved, at least in the area of the contacting with the soldering tool.
  • the contact elevations preferably have a height of 0.1 mm to 2 mm, particularly preferably of 0.2 mm to 1 mm.
  • the length and width of the contact elevations is preferably between 0.1 and 5 mm, very particularly preferably between 0.4 mm and 3 mm.
  • the contact elevations are preferably formed integrally with the compensator plates or the connection element, for example by embossing or deep-drawing.
  • the contact side is formed flat.
  • the electrode surface is brought into contact with the contact elevation.
  • the electrode surface is arranged parallel to the surface of the substrate.
  • the contact area between the electrode surface and contact elevation forms the solder joint.
  • the position of the solder joint is determined by the point on the convex surface of the contact elevation, which has the greatest perpendicular distance from the surface of the substrate.
  • the position of the solder joint is independent of the position of the soldering electrode on the compensator plates or the connecting element. This is particularly advantageous in terms of a reproducible, even heat distribution during the soldering process.
  • the Heat distribution during the soldering process is determined by the position, size, arrangement and geometry of the contact bump.
  • the compensator plates preferably have a coating (wetting layer) at least on the contact surface aligned with the solder mass, which contains nickel, copper, zinc, tin, silver, gold or alloys or layers thereof, preferably silver.
  • the compensator plates according to the invention are preferably coated with nickel, tin, copper and / or silver.
  • the compensator plates are particularly preferably provided with an adhesion-promoting layer, preferably of nickel and / or copper, and additionally with a solderable layer, preferably of silver.
  • the compensator plates according to the invention are very particularly preferably coated with 0.1 ⁇ m to 0.3 ⁇ m nickel and / or 3 ⁇ m to 20 ⁇ m silver.
  • the compensator plates can be nickel-plated, tin-plated, copper-plated and / or silver-plated. Nickel and silver improve the current carrying capacity and corrosion stability of the compensator plates and the wetting with the solder mass.
  • connection element can optionally also have a coating.
  • a coating of the connection element is not necessary since there is no direct contact between the connection element and the solder mass. Thus, there is no need to optimize the wetting properties of the connection element. As a result, the production costs of the disc according to the invention with connection element and Kompensatorplatten be reduced because it can dispense with a large-area coating of the connection element and only the usually much smaller surface of Kompensatorplatten is coated.
  • connection element has a coating which contains nickel, copper, zinc, tin, silver, gold or alloys or layers thereof, preferably silver.
  • the connection element is coated with nickel, tin, copper and / or silver.
  • the connection element is coated with 0.1 ⁇ m to 0.3 ⁇ m nickel and / or 3 ⁇ m to 20 ⁇ m silver.
  • the connection element can be nickel-plated, tin-plated, copper-plated and / or silver-plated.
  • the shape of the compensator plates may form one or more solder deposits in the space between the compensator plate and the electrically conductive structure.
  • the solder deposits and wetting properties of the solder on the compensator plates prevent the escape of the solder mass from the gap.
  • Lotdepots can be rectangular, rounded or polygonal configured.
  • the electrically conductive structure can be applied to the substrate by methods known per se, for example by screen printing methods.
  • the application of the electrically conductive structure can take place before, during or after process steps (a) and (b).
  • the solder mass is preferably applied as platelets or flattened drops with a defined layer thickness, volume, shape and arrangement on the Kompensatorplatten.
  • the layer thickness of the Lotmasseplättchens is preferably less than or equal to 0.6 mm.
  • the shape of the Lotmasseplättchens preferably corresponds to the shape of the contact surface. If the contact surface is rectangular, for example, the solder mass platelet preferably has a rectangular shape.
  • the introduction of energy in the electrical connection of Kompensatorplatten and electrically conductive structure is preferably carried out with stamp, thermodes, piston brazing, Microflammlöten, preferably laser brazing, hot air soldering, induction brazing, resistance brazing and / or with ultrasound.
  • connection element is welded or soldered on the upper side of the compensator plates or fastened by means of a screw or plug connection.
  • connection element is attached to the compensator plates by electrode resistance welding, ultrasonic welding or friction welding.
  • connection element is welded or crimped after installation of the disc in the vehicle with a metal sheet, a stranded wire or a braid, such as copper, and connected to the on-board electronics.
  • the invention further comprises the use of the pane according to the invention with electrically conductive structures in vehicles, architectural glazing or building glazing, in particular in motor vehicles, rail vehicles, aircraft or maritime vehicles.
  • the invention comprises the use of the pane according to the invention in rail vehicles or motor vehicles, preferably as a windscreen, rear window, side window and / or roof window, in particular as a heatable pane or as a pane with an antenna function.
  • FIGS. 1a and 1b show a disc according to the invention with connection element (4) and compensator plate (3).
  • FIG. 1b shows a cross section along the cross-sectional line AA '. The cut surfaces in FIG. 1b are shown hatched.
  • a substrate (1) made of a 3 mm thick thermally toughened tempered safety glass of soda-lime glass a Abdecksieb réelle (6) is applied.
  • the substrate (1) has a width of 150 cm and a height of 80 cm, wherein at the shorter side edge in the region of Abdecksieb réelles (6), a connecting element (4) with Kompensatorplatte (3) is mounted.
  • an electrically conductive structure (2) is applied in the form of a Schuleiter Modell.
  • the electrically conductive structure contains silver particles and glass frits, wherein the silver content is greater than 90%.
  • the electrically conductive structure (2) is widened to 10 mm.
  • a lead-free solder mass (5) is applied, which connects the electrically conductive structure (2) with a contact surface (7) on the underside of the compensator plate (3).
  • the contact surface (7) and the lead-free solder mass (5) are in the plan view in FIG. 1a concealed by the compensator plate (3), but in cross-section ( FIG. 1b ) recognizable.
  • the contact is made after mounting in the Vehicle body covered by the Abdecksiebdruck (6).
  • the lead-free solder mass (5) ensures a permanent electrical and mechanical connection of the electrically conductive structure (2) with the compensator plate (3).
  • the lead-free solder mass (5) contains 57 wt .-% bismuth, 42 wt .-% tin and 1 wt .-% silver.
  • the lead-free solder mass (5) has a thickness of 250 microns.
  • the connecting element (4) consists of a flat bent sheet metal with a foot, the underside of which is welded on the upper side of the compensator plate (3). The bending of the connecting element is in cross section ( FIG. 1b ) recognizable.
  • the electrical connection element (4) consists of copper of the material number CW004A (Cu-ETP) and has a contact surface with a width of 4 mm and a length of 6 mm. This material has a low electrical resistance (1.8 ⁇ Ohm ⁇ cm) and is particularly suitable as a connection element (4) due to its high electrical conductivity.
  • the material thickness of the connecting element (4) is 0.8 mm.
  • the compensator plate (3) consists of a circular punched sheet metal and has a height (material thickness) of 0.5 mm and a diameter of 4 mm.
  • the compensator plate (3) consists of steel of material number 1.4509 according to EN 10 088-2 (ThyssenKrupp Nirosta® 4509).
  • the Kompensatorplatte (3) compensates for mechanical stresses and thus makes the combination of a connecting element (4) made of copper with a lead-free solder mass (5) possible.
  • a connecting element (4) made of copper with a lead-free solder mass (5).
  • critical stresses in the disc are avoided, while still the previously known connection elements (4) made of copper or copper alloys can be used.
  • the manufacturing process can be simplified by standardizing the soldering process, regardless of the material and the shape of the connection element (4), since the parameters of the soldering process depend only on the compensator plates (3) used. This result was surprising and unexpected to the person skilled in the art.
  • FIG. 2a, 2b and 2c show different views of a disc according to the invention with bridge-shaped connection element (4) and two Kompensatorplatten (3).
  • FIG. 2a shows a perspective view of the disc
  • FIG. 2b a cross section along the cross-sectional line BB 'and Figure 2c a top view. The cut surfaces are in FIG. 2b hatched shown.
  • a Abdecksiebdruck (6) is applied on a substrate (1) made of a 3 mm thick thermally toughened tempered safety glass of soda-lime glass .
  • the substrate (1) has a width of 150 cm and a height of 80 cm, wherein at the shorter side edge in the region of Abdecksiebdrucks (6), a connection element (4) with
  • Compensator plates (3) is mounted.
  • an electrically conductive structure (2) is applied in the form of a Walkerleiter Modell.
  • the electrically conductive structure contains silver particles and glass frits, the silver content being greater than 90%.
  • the electrically conductive structure (2) is widened to 10 mm.
  • a lead-free solder mass (5) is applied, which connects the electrically conductive structure (2) with the contact surfaces (7.1, 7.2) on the underside of the compensator plates (3).
  • the contact is obscured by the Abdecksiebdruck (6) after mounting in the vehicle body.
  • the lead-free solder mass (5) ensures a permanent electrical and mechanical connection of the electrically conductive structure (2) with the compensator plates (3) and the connection element (4).
  • the lead-free solder mass (5) contains 57 wt .-% bismuth, 42 wt .-% tin and 1 wt .-% silver.
  • the lead-free solder mass (5) has a thickness of 250 microns.
  • the connection element (4) has a bridge shape.
  • the connecting element (4) comprises two feet which rest on the first compensator plate (3.1) and the second compensator plate (3.2) and a bridge-shaped section which extends between the feet. In the bridge-shaped section, the connection element (4) bears neither on the compensator plates (3) nor on the electrically conductive structure (2).
  • the electrical connection element (4) has a width of 4 mm and a length of 24 mm and consists of copper of the material number CW004A (Cu-ETP).
  • This material has a low electrical resistance (1.8 ⁇ Ohm-cm) and is particularly suitable as a connection element (4) due to its high electrical conductivity.
  • the material thickness of the connecting element (4) is 0.4 mm.
  • the compensator plates (3.1, 3.2) consist of circular stamped sheets and each have a height (material thickness) of 0.5 mm and a diameter of 6 mm.
  • the compensator plates (3.1, 3.2) consist of steel of material number 1.4509 according to EN 10 088-2 (ThyssenKrupp Nirosta® 4509). The compensator plates (3.1, 3.2) compensate for mechanical stresses and thus make it possible to combine a connecting element (4) made of copper with a lead-free solder mass (5).
  • FIG. 3 shows a plan view of the disc according to Figure 2c , wherein in each case a contact elevation (9) is applied to the compensator plates (3).
  • the contact elevations (9) are arranged on the surface of the compensator plates (3) facing away from the substrate, opposite the contact surfaces.
  • the contact elevations (9) are embossed into the compensator plates (3) and thus formed integrally therewith.
  • the Contact elevations (9) are formed as a spherical segment and have a height of 2.5 x 10 -4 m and a width of 5 x 10 -4 m.
  • the contact elevations (9) serve for contacting the compensator plates (3) with the soldering tool during the soldering process.
  • the contact elevations (9) ensure a reproducible and defined heat distribution, regardless of the exact positioning of the soldering tool.
  • FIG. 4 a plan view of the disc according to Figure 2c , wherein additionally two contact elevations (9) on the connecting element (4) are applied.
  • the design of the contact elevations (9) corresponds to the in FIG. 3
  • the contact elevations (9) on the connection element (4) are arranged even in the region which is located above the compensator plates (3). This embodiment is advantageous in terms of optimum heat distribution in the compensator plates (3) during the soldering process.
  • FIG. 5a shows a plan view of the disc according to Figure 2c , Wherein additionally two contact elevations (9) are applied to the Kompensatorplatten (3).
  • the design of the contact elevations (9) corresponds to the in FIG. 3
  • each compensator plate (3.1, 3.2) carries two contact elevations (9).
  • the contact elevations (9) flank the feet of the connecting element (4) and are arranged laterally of these.
  • FIG. 5b shows a cross section of the disc according to FIG. 5a along the cross-sectional line CC '.
  • the cut surfaces are shaded.
  • On the first contact surface (7.1) of the first compensator plate (3.1) three spacers (8) are arranged, two of which are recognizable, since they lie in the cross-sectional plane.
  • the second compensator plate (3.2), which is not shown in this figure, is equipped with contact elevations (9) and spacers (8) analogously to the first compensator plate (3.1).
  • the spacers (8) are embossed on the contact surfaces (7) in the compensator plates (3) and thus formed integrally therewith.
  • the spacers (8) are formed as spherical segments and have a height of 2.5 x 10 -4 m and a width of 5 x 10 -4 m. By the spacers (8), the formation of a uniform layer of lead-free solder mass (5) is favored. This is particularly advantageous with regard to the adhesion of the compensator plates (3).
  • the contact elevations (9) are at the contact surfaces (7) opposite, from the substrate (1) arranged opposite surface of the compensator plates (3).
  • the spacers (8) and the contact elevations (9) can in principle be positioned independently of one another, wherein they may not overlap when the elements are imprinted.
  • the in the Figures 3 and 4 shown contact elevations (9) are also used in combination with spacers (8).
  • FIG. 6 shows a flow chart of the inventive method for producing a disc with connection element (4) and compensator plates (3).
  • a connection element (4) is fixed in an electrically conductive manner on the upper side of the compensator plates (3).
  • a lead-free solder mass (5) on the underside of the compensator plates (3) on at least one contact surface (7) is applied and the compensator plates (3) with the lead-free solder mass (5) on the electrically conductive structure (2).
  • the compensator plates (3) are then soldered to the electrically conductive structure (2).

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Combinations Of Printed Boards (AREA)
  • Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
EP13739210.6A 2012-11-21 2013-07-18 Scheibe mit elektrischem anschlusselement und kompensatorplatten Active EP2923529B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL13739210T PL2923529T3 (pl) 2012-11-21 2013-07-18 Szyba z elektrycznym elementem łączącym i płytą kompensatora
EP13739210.6A EP2923529B1 (de) 2012-11-21 2013-07-18 Scheibe mit elektrischem anschlusselement und kompensatorplatten

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12193521 2012-11-21
EP13739210.6A EP2923529B1 (de) 2012-11-21 2013-07-18 Scheibe mit elektrischem anschlusselement und kompensatorplatten
PCT/EP2013/065175 WO2014079595A1 (de) 2012-11-21 2013-07-18 Scheibe mit elektrischem anschlusselement und kompensatorplatten

Publications (2)

Publication Number Publication Date
EP2923529A1 EP2923529A1 (de) 2015-09-30
EP2923529B1 true EP2923529B1 (de) 2016-12-07

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EP13739210.6A Active EP2923529B1 (de) 2012-11-21 2013-07-18 Scheibe mit elektrischem anschlusselement und kompensatorplatten

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US (1) US9572200B2 (ko)
EP (1) EP2923529B1 (ko)
JP (2) JP2016503568A (ko)
KR (1) KR101711314B1 (ko)
CN (1) CN104782225B (ko)
AU (1) AU2013350059B2 (ko)
BR (1) BR112015010474B1 (ko)
CA (1) CA2891680C (ko)
EA (1) EA029086B1 (ko)
ES (1) ES2618514T3 (ko)
MA (1) MA38104B1 (ko)
MX (1) MX344768B (ko)
MY (1) MY183691A (ko)
PL (1) PL2923529T3 (ko)
PT (1) PT2923529T (ko)
WO (1) WO2014079595A1 (ko)
ZA (1) ZA201503296B (ko)

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AU2013314647B2 (en) 2012-09-14 2016-12-15 Saint-Gobain Glass France Pane having an electrical connection element
JP6566811B2 (ja) * 2014-09-25 2019-08-28 株式会社旭製作所 半田チップ、半田チップを用いた端子付きガラス基板の製造方法
JP6725971B2 (ja) * 2015-07-14 2020-07-22 日本板硝子株式会社 ガラス板モジュール
GB201515010D0 (en) 2015-08-24 2015-10-07 Pilkington Group Ltd Electrical connector
JP6613920B2 (ja) 2016-01-22 2019-12-04 セントラル硝子株式会社 車両用窓ガラス及び車両用窓ガラスの製造方法
GB201607398D0 (en) * 2016-04-28 2016-06-15 Strip Tinning Ltd Connector
FR3054403B1 (fr) * 2016-07-22 2019-10-18 Saint-Gobain Glass France Vitrage avec element electriquement conducteur et sa connexion electrique
GB201704525D0 (en) * 2017-03-22 2017-05-03 Central Glass Co Ltd Vehicle glass window with electrical connector soldered by lead-free solder
KR102335720B1 (ko) * 2017-03-27 2021-12-07 삼성전자주식회사 표면 실장용 금속 유닛 및 이를 포함하는 전자 장치
MA50990A (fr) 2017-12-04 2020-10-14 Agc Glass Europe Connecteur électrique à sertir doté d'un élément de protection
MA50987A (fr) * 2017-12-04 2020-10-14 Agc Glass Europe Connecteur électrique à sertir comportant une partie formant queue
GB201804622D0 (en) * 2018-03-22 2018-05-09 Central Glass Co Ltd Method of producing a vehicle glass assembly
GB201804624D0 (en) * 2018-03-22 2018-05-09 Central Glass Co Ltd Method of producing a vehicle glass assembly
MA53000A (fr) * 2018-06-26 2021-05-05 Saint Gobain Disque comprenant un élément de raccordement électrique et un câble de raccordement
CN109375400B (zh) * 2018-10-12 2021-09-21 中航华东光电有限公司 新型光学加热器及其制备方法
US10680354B1 (en) * 2019-03-14 2020-06-09 Antaya Technologies Corporation Electrically conductive connector
JP7373931B2 (ja) * 2019-07-01 2023-11-06 日本板硝子株式会社 接続端子
US11889596B2 (en) * 2020-07-30 2024-01-30 Min Hsiang Corporation Electrical connecting portion for a device with a heating function
JPWO2022172785A1 (ko) * 2021-02-09 2022-08-18
JP2023006654A (ja) * 2021-06-30 2023-01-18 日本板硝子株式会社 車両用ガラスモジュール

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Also Published As

Publication number Publication date
PT2923529T (pt) 2017-03-07
JP2017147229A (ja) 2017-08-24
MY183691A (en) 2021-03-08
CA2891680A1 (en) 2014-05-30
JP2016503568A (ja) 2016-02-04
CN104782225B (zh) 2017-03-15
WO2014079595A1 (de) 2014-05-30
ZA201503296B (en) 2016-05-25
CA2891680C (en) 2018-06-05
BR112015010474B1 (pt) 2021-08-10
MX344768B (es) 2017-01-06
AU2013350059B2 (en) 2016-08-18
EP2923529A1 (de) 2015-09-30
US20150296569A1 (en) 2015-10-15
BR112015010474A2 (pt) 2017-07-11
EA201590995A1 (ru) 2015-08-31
US9572200B2 (en) 2017-02-14
EA029086B1 (ru) 2018-02-28
MX2015006368A (es) 2015-09-28
KR20150076217A (ko) 2015-07-06
ES2618514T3 (es) 2017-06-21
AU2013350059A1 (en) 2015-06-11
CN104782225A (zh) 2015-07-15
PL2923529T3 (pl) 2017-06-30
MA38104B1 (fr) 2017-03-31
KR101711314B1 (ko) 2017-02-28
JP6440756B2 (ja) 2018-12-19
MA38104A1 (fr) 2016-08-31

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