Electrical connection element for contacting an electrically conductive structure on a substrate

Patent metadata

Field	Value
Publication number	US-10374343-B2
Application number	US-201515303729-A
Country	US
Kind code	B2
Filing date	Mar 11, 2015
Priority date	Apr 29, 2014
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

An electrical connection element for the electrical contacting of an electrically conductive structure on a substrate is described. The electrical connection element has at least two solid subelements made from different materials, the first subelement being adapted for soldering to the electrically conductive structure, and the second subelement being adapted for connection to an electrical connection cable. The first subelement and the second subelement are connected to one another by way of at least one rivet.

First claim

The invention claimed is:

1. A pane with at least one electrical connection element, comprising:
a substrate;
an electrically conductive structure on a region of the substrate; and
at least one electrical connection element, comprising at least two first subelements, and a second subelement made from a material different than a material of the first subelement,
wherein:
each of the two first subelements is connected via a lead-free soldering compound to a region of the electrically conductive structure,
a difference between a coefficient of thermal expansion of the substrate and a coefficient of thermal expansion of each of the two first subelements is less than 5×10 −6 /° C.,
the second subelement comprises two foot regions and a bridging region arranged therebetween,
each of the two first subelements is implemented as a flat plate,
each of the two first subelements is arranged on an underside of a respective one of the two foot regions between the second subelement and the substrate,
in an installed state of the pane, the second subelement is connected to an electrical connection cable,
each the two first subelements and the second subelement are connected to one another by at least one rivet,
each of the two first subelements comprises a depression region on a soldering face of said subelement, and
the depression region comprises a hole through which the at least one rivet is guided.

2. The pane according to claim 1 , wherein a difference between a melting temperature of the material of the at least two first subelements and a melting temperature of the material of the second subelement is greater than 200° C.

3. The pane according to claim 1 , wherein the at least two first subelements contain at least one iron-containing alloy.

4. The pane according to claim 1 , wherein the second subelement contains copper or a copper-containing alloy.

5. The pane according to claim 1 , wherein the at least one rivet contains one or more of: a) copper, b) brass, c) bronze, d) steel, e) aluminum alloys, and f) titanium.

6. The pane according to claim 1 , wherein a thickness of the material of the at least two first subelements and a thickness of the material of the second subelement is from 0.1 to 4 mm.

7. The pane according to claim 1 , wherein the second subelement is connected to an electrical connection cable.

8. The pane according to claim 1 , wherein the substrate contains glass.

9. The pane according to claim 1 , wherein the electrically conductive structure contains silver, and has a layer thickness from 5 μm to 40 μm.

10. The pane according to claim 1 , wherein a difference between a melting temperature of the material of the at least two first subelements and a melting temperature of the material of the second subelement is greater than 300° C.

11. The pane according to claim 1 , wherein a difference between a melting temperature of the material of the at least two first subelements and a melting temperature of the material of the second subelement is greater than 400° C.

12. The pane according to claim 1 , wherein the at least one rivet contains copper or a copper-containing alloy.

13. The pane according to claim 1 , wherein the at least one rivet is implemented in one piece with a first subelement of the at least two first subelements.

14. The pane according to claim 1 , wherein a thickness of the material of the at least two first subelements and a thickness of the material of the second subelement is from 0.2 mm to 2 mm.

15. The pane according to claim 1 , wherein a thickness of the material of the at least two first subelements and a thickness of the material of the second subelement is from 0.5 mm to 1 mm.

16. The pane according to claim 1 , wherein a difference between a coefficient of thermal expansion of the substrate and a coefficient of thermal expansion of each of the at least two first subelements is less than 3×10 −6 /° C.

17. The pane according to claim 1 , wherein the substrate contains soda lime glass.

18. The pane according to claim 1 , wherein the electrically conductive structure contains at least silver particles and glass frits, and has a layer thickness from 5 μm to 40 μm.

19. A method comprising:
using the pane according to claim 1 in one or more of: a) buildings, b) means of transportation for travel on land, in the air, or on water, c) rail vehicles or motor vehicles, d) a windshield, e) a rear window, f) a side window, g) a roof panel, h) a heatable pane, and i) a pane with an antenna function.

20. The pane according to claim 1 , wherein the depression region of each first subelement of the at least two first subelements is arranged in a middle region of the soldering face of said first subelement.

21. The pane according to claim 3 , wherein the at least two first subelements contain at least one chromium-containing steel.

22. The pane according to claim 3 , wherein each of the at least two first subelements contains 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 wt.-% to 1 wt.-% titanium.

23. A method for producing a pane with at least one electrical connection element, the method comprising:
1) producing an electrical connection element for electrical contacting of an electrically conductive structure on a substrate through the following steps:
a) preparing two first solid subelements and a second solid subelement, wherein:
i) the first and second subelements are made of different materials,
ii) each of the two first subelements comprises a depression region on a soldering face of said subelement, and the second subelement comprises two foot regions and a bridging region arranged therebetween, and
iii) the second subelement for connection to an electrical connection cable,

b) arranging the second subelement atop each of the two first subelements, and
c) connecting each of the two first subelements to the second subelement by means of a respective rivet that is guided through a hole that is formed in the depression region of each of the two first subelements;

2) applying a lead-free soldering compound on a contact surface of each of the two first subelements of the produced electrical connection element;
3) arranging the produced electrical connection element with the applied lead-free soldering compound on a region of an electrically conductive structure that is applied on a region of a substrate; and
4) connecting the produced electrical connection element to the electrically conductive structure under application of energy,
wherein a difference between a coefficient of thermal expansion of the substrate and a coefficient of thermal expansion of each of the two first subelements is less than 5×10 −6 /° C.,
wherein each of the two first subelements is arranged on an underside of a respective one of the two foot regions between the second subelement and the substrate, and
wherein each of the two first subelements is implemented as a flat plate.

Assignees

• Saint Gobain
• Few Fahrzeugelektrik Werk Gmbh & Co Kg

Inventors

• Schmalbuch Klaus
• Rateiczak Mitja
• Reul Bernhard
• Schneider Bjoern

Classifications

• H01R12/57

  surface mounting terminals · CPC title

• H05B2203/017

  Manufacturing methods or apparatus for heaters · CPC title

• H05B3/84 Primary

  Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields · CPC title

• H05B2203/016

  Heaters using particular connecting means · CPC title

• H01R4/06 Primary

  Riveted connections (by explosion H01R4/08) · CPC title