EP2593990A1 - Dispositif de connexion electrique a conductance amelioree - Google Patents
Dispositif de connexion electrique a conductance amelioreeInfo
- Publication number
- EP2593990A1 EP2593990A1 EP11752584.0A EP11752584A EP2593990A1 EP 2593990 A1 EP2593990 A1 EP 2593990A1 EP 11752584 A EP11752584 A EP 11752584A EP 2593990 A1 EP2593990 A1 EP 2593990A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductive element
- conductors
- coating
- metal
- foam
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 58
- 239000006260 foam Substances 0.000 claims abstract description 47
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 33
- 238000000576 coating method Methods 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 28
- 239000000956 alloy Substances 0.000 claims abstract description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052718 tin Inorganic materials 0.000 claims abstract description 21
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 20
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 13
- 239000010941 cobalt Substances 0.000 claims abstract description 13
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052738 indium Inorganic materials 0.000 claims abstract description 9
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000006262 metallic foam Substances 0.000 claims description 28
- 239000004519 grease Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 229910052741 iridium Inorganic materials 0.000 claims description 6
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 230000000593 degrading effect Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims description 2
- 238000005530 etching Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 238000002788 crimping Methods 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002984 plastic foam Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010957 pewter Substances 0.000 description 1
- 229910000498 pewter Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
-
- 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
-
- 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
-
- 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
- H01R13/025—Contact members formed by the conductors of a cable end
-
- 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
- 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
- H01R13/035—Plated dielectric material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/304—Clamped connections, spring connections utilising a screw or nut clamping member having means for improving contact
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
- H01R4/625—Soldered or welded connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/12—End pieces terminating in an eye, hook, or fork
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49194—Assembling elongated conductors, e.g., splicing, etc.
- Y10T29/49195—Assembling elongated conductors, e.g., splicing, etc. with end-to-end orienting
Definitions
- the present invention relates to the improvement of the eonductance of electrical connections. It relates, in particular, a device for electrical connection between two metal conductors.
- the maintenance of the connections requires disassembly to practice a re-surfacing of the areas in contact.
- the tools used for these re-surfacing are generally rotary grinding machines. They degrade the total flatness of the surfaces in contact, which has the effect of limiting, on the surface, the zones and points of contact. The contact zones being reduced, the connections then undergo electrical stresses concentrated on these zones and their degradation is even faster.
- French Patent No. 2,847,391 discloses a contact device comprising a silver foam conductive element adapted to be interposed between the two contact surfaces of two conductors of a electrical connection. It turns out that silver foam is quite expensive.
- One of the aims of the present invention is to provide an electrical connection device which makes it possible to improve the electrical conclusion of the connection and to slow down the degradation of the surfaces in contact.
- the object of a first aspect of the invention is therefore an electrical connection device comprising two conductors each having a contact surface and a conductive element interposed between the contact surfaces of the conductors.
- the interposed conductive member is formed of an open cell foam skeleton of metal selected from the group consisting of iron, cobalt, nickel and their alloys directly coated with at least one coating of copper, tin, iridium or one of their al1 rages,
- the coating is a copper coating itself coated with a coating of tin, indium or an alloy thereof.
- the present invention provides an electrical connection device comprising two conductors each having a contact surface and a conductive element interposed between the contact surfaces of said conductors, the intermediate conductive element being constituted by a skeleton of foam of open cell metal, wherein the metal foam constituting the skeleton of the intermediate conductive member (10) is impregnated with grease.
- the present invention is directed to an electrical connection device comprising two conductors, each having a contact surface and a conductive element interposed between the contact surfaces of said conductors, the interleaved conductive element being constituted by a skeleton of open-celled metal foam, wherein the metal foam constituting the skeleton of the intermediate conductive element forms a seal at the periphery of the contact surfaces.
- the present invention is directed to a clamping system which comprises a clamping means adapted to bring two conductors around an interposed conductive element consisting of an open-celled metal foam skeleton for reducing the electrical resistance of the connection, the metal of the metal foam being selected from the group consisting of iron, cobalt, nickel and their alloys coated directly with ins a coating of copper, tin, iridium or any of their alloys.
- the present invention is directed to an electricity meter, which comprises an electrical connection device according to one of the first to third aspects of the present invention or a clamping system according to the fourth aspect of the invention.
- the present invention is directed to a crimping lug lining, which comprises a conductive element consisting of an open cell metal foam skeleton for reducing the electrical resistance of the connection, the metal of the metal foam being selected from the group consisting of iron, cobalt, nickel and their alloys directly coated with at least one coating of copper, tin, indium or an alloy thereof.
- the present invention aims at a method of electrical connection of two conductors having each a contact surface, comprising a step of positioning, facing one of the other of said contact surfaces, characterized in that it comprises a step of positioning, between said contact surfaces, a conductive element interlayer consisting of an open cell foam skeleton of metal selected from the group consisting of iron, cobalt, nickel and their alloys directly coated with at least one coating of copper, tin, iridium or an alloy thereof .
- FIG. 1 represents a section of an inode of particular embodiment of the electrical connection device according to the invention
- FIG. 2 represents the intermediate conductive element of the device according to the invention illustrated in FIG. 1 and having a peripheral seal
- FIGS. 3A and 3B show, respectively in plan view and in side view, a particular embodiment of a terminal lug.
- Figure 4 shows, in side view, the. crimp terminal illustrated in Figures 3A and 3B, after crimping and fixing on a conductor.
- FIGS. 1 and 2 show a first aspect of the present invention.
- An electrical connection device according to the invention may be the device illustrated in FIG.
- intermediate conductive element 10 in. metal foam so that their respective surfaces come into contact with the foam.
- the electrical connection between the conductors 12 and 14 is made by close contact thanks to a clamping means such as a bolt clamping 16 passing through the two conductors as well as the intermediate conductive element 10.
- At least one of the conductors is aluminum.
- the present invention is not limited to this case and applies to all conductors, for example copper.
- the metal foam of the spacer element 10 is an open cell foam composed of a metal foam skeleton selected from the group consisting of 1, cobalt, nickel and their alloys directly coated with at least one metal coating such as a coating of tin, indium or one of their alloys.
- the skeleton of foam can be obtained by electrolysis.
- a plastic foam plate such as a polyurethane foam is made electrically conductive and is used as a cathode in an electrolytic bath, thereby covering all the surfaces of the cells or open cells of the foam by a layer of metal.
- a second method of obtaining the metal foam plate is to deposit the metal by the vacuum deposition technique.
- a third method consists in a first step of activating the plastic foam by chemical deposition of a thin metal layer f followed by a second electrolysis step during which a layer of the same metal of adequate thickness is deposited by electrolysis.
- the structure of the foam 10 thus obtained is cellular and its physical properties are mainly a high porosity and deformability, which has as its effect of reducing the electrical resistance of the connection, as well as a low density of the order of 400 g / in.
- Porosity represents the void ratio on the total volume. Preferably, this ratio is greater than 50% and, even more preferably, 70%.
- Deformability represents the ratio of the minimum thickness of the foam under pressure to the thickness of the foam before pressurization. This ratio is preferably less than 50% and even more preferably 10%.
- the foam 10 is thus made of. most of the vacuum because of its honeycomb structure.
- the surface of the foam 10 has a multitude of contact points of the order of one micron, the number of which reaches 30 points per mm 2 .
- the thickness of the foam 10 is of the order of 2 mm. With these tips, the spacer element 10 has many contacts, high conductivity and therefore low resistance.
- the choice of iron, cobalt, nickel or one of their alloys, which are metals with a high degree of hardness makes it possible to obtain hard points capable of penetrating the surface of the conductors under the effect of the clamping of these conductors. .
- a feature of the invention is that the metal foam skeleton is. directly covered with a coating of another metal, by electrolysis or any other process (spraying, immersion in a bath ...) so that the entire cellular surface is coated with this other metal.
- the coating metal is preferably ductile in order to increase the contact area of each point of the metal constituting the skeleton, to penetrate the ridges of the conductor surface and to improve the electrochemical compatibility between the skeleton of foam and the metal of the conductor, for example aluminum or copper, in order to generate microsouda.ges.
- the metal of outer skin of the skeleton is preferably tin, iridium or one of their alloys.
- the first coating may also be covered with another coating of a metal different from that of the first coating, and so on.
- the second coating may be in. indium or, if the first coating is copper, the second may be tin.
- the intermediate conductive element 10 is composed of a nickel foam skeleton covered with a coating of tin.
- the spacer element 10 preferably includes a peripheral seal 20.
- This peripheral seal 20 can be made in different ways. It can be impregnated into the foam or made by removing an elastomeric sealant on the periphery. It is also possible to make the seal 20 by folding the edges of the foam plate 10 at least once on itself or rolling the edges of the foam plate 10. Under the effect of the pressure, the thickness the foam plate becomes uniform, which implies that the. density is at least doubled in the areas of folding of the foam, with the effect of making the seal considered at the periphery of the intermediate conductive element 10.
- the seal d. Peripheral sealing 20 makes it possible to reduce the penetration of degrading external agents. creating a tight barrier at the periphery of the contact.
- the degrading agents are generally liquids such as sodium hydroxide or washing water or any other pollutant carried by water.
- the device according to the invention can be used for a new electrical connection. In this case, it improves the homogeneity of the flow of current through the surfaces in touch . Indeed, in an electrical connection, the contact is of greater importance than it is close to the clamping means or bolt 16. Therefore, the resistance, and therefore the electrical losses of the electrical connection consisting of the conductors 12 and 14 in contact, is minimal near the clamping means 16 and increases further away. This inhomogeneous distribution of the current favors a zone of higher current concentration and therefore an area more stressed and therefore degraded more quickly.
- the contribution of the intermediate conductive element 10 made of foam increases the points of contact between the two conductors 12 and 14 and thus allows: a homogeneous distribution of the current over the entire contact surface. Thanks to this homogeneous distribution, there are no zones of concentration of current thus pa.s of zone more solicited and favorable to a more rapid degradation.
- the device according to the invention can also be advantageously used for a contact of a degraded or deformed electrical connection.
- oxygen in the air causes the formation of an aluminum oxide layer, alumina, which increases the resistance of the connection.
- alumina aluminum oxide layer
- the use of the foam interlayer 10, after or without removing the alumina, is fast and inexpensive.
- the conductors and the electrical connections are subjected to currents of high intensity and. high temperatures.
- the wear of the connections is concretized mainly by a deformation of the contact surfaces of the electrical connections. This results in significant electrical losses that can reach several KW per connection and variations of the current flow through these contacting surfaces.
- the re-machining of the deformed contact surfaces is therefore no longer necessary using an intermediate conductive element 10 according to the invention.
- the deformability of the foam 10 allows it to conform to the degraded contours of the surfaces of the conductors 12 and 14 in contact and thus to increase the contact surface and to restart the pressure exerted by the clamping means 16.
- the tips on the surface of the foam 10 also pierce the layers d. oxide such as alumina which form permanently on the surface of the conductors 12 and 14, which improves the electrical conductance of a used connection, even without cleaning it beforehand.
- the foam constituting the intermediate conductive element 10 is impregnated (charged) with grease which completely fills the cells of the foam, which prevents the penetration of pollutants or agents capable of oxidizing or degrade the surfaces.
- the grease can be conductive, so as to increase the electrical conductance of the foam.
- Such a grease is, in particular, known under the trademark "Penetrox”.
- this grease can incorporate anti-oxidation products and metal particles of a few microns increasing its life. Particles can be particles of silver, gold or any other metal that is a good conductor of electricity.
- the foam component of the intermediate conductive element 10 is impregnated or charged with a component, for example basic, adapted to reduce the formation of a high resistivity layer on the surface of at least one of the conductors 12 and 14, for example alumina on an aluminum conductor, and / or etching the surface of at least one of the conductors 12 and 14.
- a component for example basic, adapted to reduce the formation of a high resistivity layer on the surface of at least one of the conductors 12 and 14, for example alumina on an aluminum conductor, and / or etching the surface of at least one of the conductors 12 and 14.
- the device according to the invention is all the more advantageous as its efficiency increases with temperature. Indeed, the potential drop of a 1 dm 2 connection using the device according to the invention with a tin-coated nickel foam 10 is of the order of a few mV for a current of an intensity of 5000 amps. This characteristic is due to the fact that the tips of the foam 10 are welded under the effect of the temperature to the conductors 12 and 14 with which they are in contact.
- the device according to the invention is particularly advantageous for improving the conductance of electrical connections in which the two conductors are aluminum, but also when one of the two conductors is copper and the other aluminum or when both conductors are copper.
- the device according to the present invention is particularly suitable for currents of high intensity greater than 1000 A.
- resiliently deformable foam also has the advantage of reducing the impact of loosening of the clamping means since, in this case, the expansion foam and continues to conform to the contact surfaces, lower pressure on these contact surfaces.
- the intermediate conductive member 10 is made of an open-celled metal foam skeleton of high porosity and deformability, selected from the group consisting of iron, cobalt, nickel, and their alloys coated directly. at least one copper coating or one of its alloys,
- the copper coating is itself coated with a coating of tin, indium or one of their alloys.
- the inventor has determined that a copper-coated nickel foam, itself coated with tin, has very advantageous electrical connection characteristics,
- the present invention provides an electrical connection device comprising two conductors, 12 and 14, each having a contact surface and a conductive element 10 interposed between the contact surfaces of said conductors, the intermediate conductive element 10 being constituted of an open cell metal foam skeleton, in which the. metal foam constituting the skeleton of the intermediate conductive element 10 is impregnated with grease.
- the fat is a conductive fat.
- the foam of the spacer element has a high porosity and deformability, which has the effect of reducing the electrical resistance of the connection due to the quality of the contacts formed by the contact points of the foam on each of the conductor and, possibly, thanks to the crossing of the alumina that they allow,
- the present invention provides an electrical connection device comprising two conductors, 12 and 14, each having a contact surface and a conductive element 10 interposed between the contact surfaces of said conductors, the intermediate conductive element 10 being constituted an open-celled metal foam skeleton, wherein the metal foam constituting the skeleton of the intermediate conductive member 10 forms a seal on the periphery of the contact surfaces.
- the present invention aims a clamping system comprising a clamping means, such as a clamping bolt 16, intended for. bring the two conductors and the intermediate conductive element 10 together.
- the electrician then only has to position the conductors 12 and 14 around the intermediate conductive element and then to tighten the clamping means to obtain the favorable effects of the present invention. invention.
- the present invention provides an electricity meter, which comprises an electrical connection device according to one of the first to third aspects of the present invention or a clamping system object d.u fourth aspect of the invention.
- the inventor a. determined that one out of every two home fire comes from domestic meters, the implementation of the present invention in an electrical connection device associated with. an electric meter is therefore particularly advantageous. Indeed, despite the thermal cycles, the. elastic deformation of the. Foam 10 ensures the maintenance of an electrical contact avoiding, or at least delaying, the heating due to the Joule effect.
- the present invention thus applies as well in strong currents as in weak currents.
- the present invention is directed to a crimp lug lining and a crimp lug provided with this lining, which comprise a conductive element 10 consisting of a metal foam skeleton with open cells for reducing the electrical resistance of the connection, the metal of the metal foam being selected from the group consisting of iron, cobalt, nickel and their alloys coated directly with less a coating of copper, tin, indium or one of their alloys.
- the crimping lug 28 which is the subject of the invention is, before crimping, constituted by a flat foam plate 10 comprising
- the conductor 42 is a battery terminal of a vehicle.
- the shape of the foam plate 10 corresponds to the shape of a metal plate 34 to which the foam plate is bonded.
- the foam plate 10 thus provides a crimp terminal lining which, once associated with the plate metal 34 forms a crimp terminal.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Conductive Materials (AREA)
- Electroplating Methods And Accessories (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Electrolytic Production Of Metals (AREA)
- Contacts (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1002988A FR2962856B1 (fr) | 2010-07-16 | 2010-07-16 | Dispositif de connexion electrique a conductance amelioree |
PCT/FR2011/051704 WO2012007701A1 (fr) | 2010-07-16 | 2011-07-18 | Dispositif de connexion electrique a conductance amelioree |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2593990A1 true EP2593990A1 (fr) | 2013-05-22 |
EP2593990B1 EP2593990B1 (fr) | 2017-07-12 |
Family
ID=43629354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11752584.0A Active EP2593990B1 (fr) | 2010-07-16 | 2011-07-18 | Dispositif de connexion électrique à conductance ameliorée |
Country Status (11)
Country | Link |
---|---|
US (1) | US9093778B2 (fr) |
EP (1) | EP2593990B1 (fr) |
JP (1) | JP6082346B2 (fr) |
KR (1) | KR101826054B1 (fr) |
CN (1) | CN103119788B (fr) |
AU (1) | AU2011278169A1 (fr) |
CA (1) | CA2805613C (fr) |
ES (1) | ES2641914T3 (fr) |
FR (1) | FR2962856B1 (fr) |
RU (1) | RU2589745C2 (fr) |
WO (1) | WO2012007701A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2996348B1 (fr) * | 2012-10-03 | 2015-05-15 | Amc Holding | Poudre et pate pour ameliorer la conductance des connexions electriques |
FR2997788B1 (fr) | 2012-11-05 | 2016-01-22 | Amc Etec | Dispositif de sectionnement d'une ligne d'alimentation electrique a courant de haute intensite |
WO2014192869A1 (fr) * | 2013-05-29 | 2014-12-04 | 日本軽金属株式会社 | Élément conducteur |
FR3024875B1 (fr) * | 2014-08-14 | 2019-05-31 | Amc Holding | Electrode en mousse metallique |
DE102016224019A1 (de) * | 2016-12-02 | 2018-06-07 | BSH Hausgeräte GmbH | Haushaltskältegerät mit spezifischer Erdungsverbindung |
FR3061810B1 (fr) * | 2017-01-09 | 2020-01-10 | A M C | Dispositif de connexion entre les ecrans de deux elements de cable electrique |
FR3061809B1 (fr) * | 2017-01-09 | 2021-10-22 | A M C | Dispositif de connexion entre les ecrans de deux elements de cable electrique |
FR3073677B1 (fr) | 2017-11-13 | 2019-10-11 | A M C | Dispositif de contact adapte pour faciliter la reparation des connexions electriques boulonnees |
US20190273351A1 (en) * | 2018-03-02 | 2019-09-05 | Mersen Usa Newburyport-Ma, Llc | Electrical connector |
US11649845B2 (en) * | 2019-12-16 | 2023-05-16 | The Boeing Company | Mechanical fastener system for electromagnetic effect (EME) protection |
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US4023882A (en) * | 1974-04-25 | 1977-05-17 | Borge Hugo Pettersson | Electrical connector device securable to metal member |
JPS5380589A (en) | 1976-12-24 | 1978-07-17 | Hitachi Ltd | Connecting method for electric conductor |
JPS5648079A (en) * | 1979-09-22 | 1981-05-01 | Sumitomo Electric Industries | Aluminum wire terminal structure |
US4923739A (en) | 1987-07-30 | 1990-05-08 | American Telephone And Telegraph Company | Composite electrical interconnection medium comprising a conductive network, and article, assembly, and method |
JPH0384876A (ja) * | 1989-08-28 | 1991-04-10 | Mitsubishi Electric Corp | 電力素子の電極端子接続構造 |
US5153818A (en) | 1990-04-20 | 1992-10-06 | Rohm Co., Ltd. | Ic memory card with an anisotropic conductive rubber interconnector |
ATE141717T1 (de) | 1992-05-08 | 1996-09-15 | Multi Contact Ag | Kontaktvorrichtung |
JP3305523B2 (ja) * | 1994-11-25 | 2002-07-22 | 九州電力株式会社 | 電線接続用絶縁被覆付スリーブ |
US6114645A (en) | 1995-04-27 | 2000-09-05 | Burgess; Lester E. | Pressure activated switching device |
US5620290A (en) * | 1995-08-23 | 1997-04-15 | Illinois Tool Works Inc. | Ground retainer |
US5865638A (en) * | 1995-12-21 | 1999-02-02 | Alcoa Fujikura Ltd. | Electrical connector |
US5857858A (en) | 1996-12-23 | 1999-01-12 | General Electric Company | Demountable and repairable low pitch interconnect for stacked multichip modules |
US6309742B1 (en) | 2000-01-28 | 2001-10-30 | Gore Enterprise Holdings, Inc. | EMI/RFI shielding gasket |
CN1356699A (zh) * | 2001-01-16 | 2002-07-03 | 刘明芳 | 一种导电膏及降低室内强电接头电阻的方法 |
LU90721B1 (en) * | 2001-01-25 | 2002-07-26 | Circuit Foil Luxembourg Trading Sarl | Method for producing metal foams and furnace for producing same |
JP2003068381A (ja) * | 2001-08-28 | 2003-03-07 | Jsr Corp | 異方導電性シートおよび異方導電性シートの製造方法、ならびに電気回路部品の検査治具および電気回路部品の検査方法 |
US6799977B2 (en) | 2002-07-11 | 2004-10-05 | Hewlett-Packard Development Company, L.P. | Socket having foam metal contacts |
FR2847391A1 (fr) * | 2002-11-20 | 2004-05-21 | A M C | Dispositif de contact pour ameliorer la duree de vie des connexions electriques |
JP2004319382A (ja) * | 2003-04-18 | 2004-11-11 | Kyoshin Kogyo Co Ltd | アース端子 |
DE10326788B4 (de) * | 2003-06-13 | 2005-05-25 | Robert Bosch Gmbh | Kontaktoberflächen für elektrische Kontakte und Verfahren zur Herstellung |
JP5059292B2 (ja) * | 2005-03-08 | 2012-10-24 | 株式会社神戸製鋼所 | ウイスカー発生抑制に優れたSn合金めっき |
US7294020B2 (en) | 2005-05-25 | 2007-11-13 | Alcoa Fujikura Ltd. | Canted coil spring power terminal and sequence connection system |
CN101245148B (zh) * | 2007-02-13 | 2012-05-23 | 镇江爱邦电子科技有限公司 | 单分散性高性能导电银颗粒 |
DE102008017157B4 (de) * | 2008-04-03 | 2022-10-06 | Vitesco Technologies GmbH | Kontaktelement und Leiterplattenordnung |
TW201409848A (zh) * | 2012-08-21 | 2014-03-01 | Adv Flexible Circuits Co Ltd | 軟性電路排線插接結構 |
-
2010
- 2010-07-16 FR FR1002988A patent/FR2962856B1/fr active Active
-
2011
- 2011-07-18 ES ES11752584.0T patent/ES2641914T3/es active Active
- 2011-07-18 EP EP11752584.0A patent/EP2593990B1/fr active Active
- 2011-07-18 CA CA2805613A patent/CA2805613C/fr active Active
- 2011-07-18 RU RU2013106894/07A patent/RU2589745C2/ru active
- 2011-07-18 KR KR1020137003170A patent/KR101826054B1/ko active IP Right Grant
- 2011-07-18 JP JP2013520183A patent/JP6082346B2/ja active Active
- 2011-07-18 WO PCT/FR2011/051704 patent/WO2012007701A1/fr active Application Filing
- 2011-07-18 US US13/810,452 patent/US9093778B2/en active Active
- 2011-07-18 AU AU2011278169A patent/AU2011278169A1/en not_active Abandoned
- 2011-07-18 CN CN201180044806.5A patent/CN103119788B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN103119788B (zh) | 2016-09-14 |
AU2011278169A1 (en) | 2013-03-07 |
JP2013534709A (ja) | 2013-09-05 |
RU2013106894A (ru) | 2014-08-27 |
RU2589745C2 (ru) | 2016-07-10 |
FR2962856B1 (fr) | 2012-08-17 |
CN103119788A (zh) | 2013-05-22 |
CA2805613A1 (fr) | 2012-01-19 |
WO2012007701A1 (fr) | 2012-01-19 |
FR2962856A1 (fr) | 2012-01-20 |
EP2593990B1 (fr) | 2017-07-12 |
US20130122730A1 (en) | 2013-05-16 |
CA2805613C (fr) | 2020-03-10 |
KR101826054B1 (ko) | 2018-02-07 |
US9093778B2 (en) | 2015-07-28 |
JP6082346B2 (ja) | 2017-02-15 |
ES2641914T3 (es) | 2017-11-14 |
KR20130139850A (ko) | 2013-12-23 |
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