EP3994767A1 - Connexion électrique entre un conducteur électrique et un élément de contact - Google Patents

Connexion électrique entre un conducteur électrique et un élément de contact

Info

Publication number
EP3994767A1
EP3994767A1 EP20734768.3A EP20734768A EP3994767A1 EP 3994767 A1 EP3994767 A1 EP 3994767A1 EP 20734768 A EP20734768 A EP 20734768A EP 3994767 A1 EP3994767 A1 EP 3994767A1
Authority
EP
European Patent Office
Prior art keywords
electrical conductor
area
contact section
irradiated
contact
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
Application number
EP20734768.3A
Other languages
German (de)
English (en)
Other versions
EP3994767B1 (fr
Inventor
Karl Fröschl
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.)
Gebauer and Griller Kabelwerke GmbH
Original Assignee
Gebauer and Griller Kabelwerke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gebauer and Griller Kabelwerke GmbH filed Critical Gebauer and Griller Kabelwerke GmbH
Publication of EP3994767A1 publication Critical patent/EP3994767A1/fr
Application granted granted Critical
Publication of EP3994767B1 publication Critical patent/EP3994767B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/187—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping combined with soldering or welding
    • 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
    • H01R4/02—Soldered or welded connections
    • H01R4/029—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
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • 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
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0221—Laser welding
    • 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
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0249—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for simultaneous welding or soldering of a plurality of wires to contact elements
    • 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
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes

Definitions

  • the invention relates to a method for producing an electrical connection between an electrical conductor comprising a plurality of individual wires and a contact element, the electrical conductor being arranged in a contact section of the contact element and subsequently the
  • the invention also relates to a corresponding device for establishing an electrical connection and to a
  • the contact element is formed, for example, by a cable lug, such as a crimp cable lug, or a cable sleeve, such as a crimp sleeve.
  • connection methods for electrically connecting an electrical cable to a contact element in which a cable crimping section which is provided on the contact element is brought into press contact with an electrical conductor of the electrical cable.
  • electrical cable is made up of several individual wires, the conductor wires, which are located on the outer circumference, brought into direct contact with the contact element and for this a power line is easy to achieve.
  • the individual wires that are arranged in the center of the conductor can be connected to the Contact element can only be brought into conductive contact via the individual wires that are located on the outer circumference.
  • the process is that the first welding step can still lead to explosive distribution.
  • Device for connecting an electrical conductor to a contact part wherein the device for pressing one or more openings are provided through which a
  • Laser beam of a laser welding device can pass through.
  • a specific arrangement or mode of action of laser beams is not disclosed in DE 10 2013 010981 B3.
  • a crimped contact element that encloses a bundle of aluminum wires.
  • tabs of the contact element are by means of
  • Distribution is reduced and a transverse conductivity between individual wires can still be established.
  • the starting point for this is a method for producing an electrical connection between an electrical conductor comprising several individual wires and a contact element, the electrical conductor being arranged in a contact section of the contact element and then the
  • elongated welded connections are made between the contact section and the electrical conductor, the elongated welded connections extending in an irradiation direction from an irradiated area of the contact section, or from an irradiated area of the electrical conductor, through an entire cross section of the pressed electrical conductor up to an area of the Contact portion, which is opposite to the irradiated area, extend so that the electrical conductor with this area of the contact portion is connected, wherein the irradiated areas are arranged in a grid shape.
  • welded connections should not be melted.
  • the invention therefore provides that the laser irradiation is carried out in such a way that the elongated welded connection extends in the irradiation direction through the entire cross section of the pressed electrical conductor.
  • the elongated welded connections thus extend in their longitudinal direction in a first variant of FIG.
  • the elongated welded connections extend from the irradiated area of the electrical conductor through the conductor to that area of the contact section passed around the conductor which is opposite the irradiated area. Then the individual wires captured by this welded connection are at at least one point with the
  • Elongated welded connections according to the present invention have a greater extent in their longitudinal direction, that is to say in the direction of irradiation, than in the width direction.
  • the length is preferably a multiple of the average width or its diameter, in particular the elongate welded connections can be rod-shaped, that is to say one
  • Welded connections can be made by deep laser welding
  • the melt in the direction of radiation create a vapor capillary deep into the workpiece.
  • the material is also melted in depth, the melting zone is usually more deep than wide.
  • the energy of the laser beam is determined according to the desired penetration depth of the laser beam in the area of the
  • a typical power of a laser for the method according to the invention is 1-15 kW. The power requirement depends on the
  • the power requirement also depends on the diameter of the elongated welded connection, the length of the elongated welded connection, i.e. the penetration depth, and the
  • the irradiated area is after the laser irradiation in the first variant of the invention on the surface of the
  • the irradiated areas are therefore located in the first variant of the invention on the surface of the contact section, and in the second variant on the surface of the electrical conductor. Since the electrical conductor comprises several individual wires, the irradiated areas are located on the surface of the individual wires.
  • One design variant provides that the elongated
  • Irradiation direction are spaced from each other.
  • the elongated welded connections are spaced from one another over their entire length.
  • One embodiment of the invention provides that several elongated welded connections, preferably all of them, are made over time successively produced by the same source of laser irradiation.
  • a source that is to say a laser
  • all desired irradiated areas can be reached from a source, for example by appropriate optical deflections (eg mirrors, etc.), without the contact element having to be moved relative to the source.
  • the laser beam can be divided into all desired irradiated areas again by appropriate optical deflections.
  • the invention provides that several elongated
  • irradiated areas spaced apart irradiated areas.
  • the irradiated areas usually as small approximately circular spots on the surface of the
  • the irradiated areas are therefore arranged according to a grid on the surface of the contact area or the electrical conductor.
  • the fact that the individual wires of the electrical conductor are usually also twisted and change their position in the conductor cross-section over their length also contributes to the contacting of all individual wires.
  • Examples of a grid-like arrangement of the irradiated areas are, for example, several irradiated areas that lie on a line and thus form a row, with two or more such rows transverse, in particular normal, to the
  • the individual wires of the electrical conductor are arranged in the longitudinal direction and in the longitudinal direction of the individual wires are arranged at a constant distance from one another. Adjacent rows have the same number of irradiated areas, for example, or differ by one irradiated area.
  • one irradiated area is offset from another irradiated area normal to the longitudinal direction of the individual wires, so that the projection of all elongated wires
  • the laser beam usually hits the surface of the contact section on the
  • Staggered irradiated areas consists for example of several rows of irradiated areas, the rows running transversely, in particular normal, to the longitudinal direction of the individual wires and adjacent rows being offset to one another transversely, in particular normal, to the longitudinal direction of the individual wires.
  • the irradiated areas of the first, third, etc. row can then be aligned with one another as seen in the longitudinal direction of the individual wires, as can the irradiated areas of the second, fourth, etc. row.
  • Adjacent rows, which are offset from one another, can also be aligned in the longitudinal direction of the
  • the individual wires overlap as seen.
  • the degree of crimping indicates the ratio of conductor cross-section after crimping (or crimping) to conductor cross-section before crimping (or crimping).
  • a compression rate of 100% means that the conductor cross-section has not been reduced at all by the compression (or crimping), but has remained the same.
  • a crimping degree of 80% means that the conductor cross-section increases as a result of the crimping (resp.
  • the contact section is divided into two longitudinal areas transversely to the longitudinal direction of the individual wires.
  • the conductor In one longitudinal area the conductor is only pressed, in the other longitudinal area the conductor is pressed and additionally irradiated with the laser according to the invention.
  • the laser In the longitudinal area where the laser is also used, it is advantageous if there are as many spaces as possible between the individual wires, that is to say an open one
  • Rope structure is ensured when building a
  • Ventilation channel acts. This measure stabilizes the laser welding process, that is, for example, if there is an emulsion residue between the pressed wires, this can lead to an emulsion when the energy is introduced
  • the length of the two steps corresponds to a longitudinal section of the
  • the different heights of the support surface relative to the contact section of the contact element have the effect that the conductor is compressed to different degrees in the two longitudinal sections of the contact element.
  • Cable lug claws i.e. more material that is pressed towards the conductor during pressing. In this way, a different height or compression of the conductor can be achieved even with a flat contact surface of the pressing tool.
  • the degree of compression of the individual wires in a longitudinal area of the contact element where the irradiated areas are located is greater than 70%.
  • the laser irradiation in that
  • an elongated welded connection takes less than 100 ms, in particular less than 80 ms, e.g. around 60 ms. Depending on the power of the laser, there is a range of 20 to 100 ms for creating an elongated welded joint.
  • the contact section is provided with a nickel coating, at least in the area where it touches the electrical conductor.
  • the nickel layer on the one hand causes corrosion protection between the conductor and the contact section and on the other hand increases the
  • the diameter of an irradiated area is between 0.4 and 0.8 mm, in particular between 0.5 and 0.7 mm, preferably 0.6 mm.
  • the grid constant of the irradiated areas is between 0.8 and 1.2 mm, in particular between 0.9 and 1.1 mm, preferably 1 mm.
  • the grid constant gives the constant distance between two irradiated areas in a certain
  • the grid constant will therefore be greater than a diameter of an irradiated area in order to allow the elongated welds from one another
  • the diameter of an elongated weld joint is usually slightly larger than the diameter of the irradiated one Area.
  • the largest diameter of an elongated welded connection is 0.7 to 0.9 mm, in particular around 0.8 mm.
  • Method that is to say for producing an electrical connection between an electrical conductor comprising several individual wires and a contact element, comprises a pressing tool with which the electrical conductor arranged in a contact section of the contact element is connected to the contact element
  • a device for laser irradiation which is designed to produce a plurality of elongated welded connections spaced apart from one another between the contact section and the electrical conductor, the elongated welded connections each extending in an irradiation direction from an irradiated area of the contact section , or from an irradiated area of the electrical conductor in an opening in the contact section to an area of the contact section which is opposite the irradiated area, so that the electrical conductor is connected to this area of the contact section, the
  • irradiated areas are arranged in a grid.
  • the device can be designed so that one or more variant embodiments of the method according to the invention can be carried out with it.
  • the device can be designed so that the position of the pressed
  • electrical conductor is not changed between pressing and laser irradiation.
  • the invention also comprises one according to the method according to the invention or with the device according to the invention
  • Elongated welded connections in an irradiation direction each extend from an irradiated area of the contact section, or from an irradiated area of the electrical conductor in an opening in the contact section, to an area of the contact section which is opposite the irradiated area, so that the electrical conductor connects to this area of the contact portion is connected, the
  • irradiated areas are arranged in a grid.
  • the unit can, a variant of the
  • the elongated welded connections are spaced from one another over a large part of their length normal to the direction of irradiation.
  • the unit can, a variant of the
  • the method according to the invention be designed so that at least one irradiated area is offset from another irradiated area normal to the longitudinal direction of the individual wires, so that the projection of all elongated
  • the unit can, a variant of the
  • the diameter of an irradiated area is between 0.4 and 0.8 mm, in particular between 0.5 and 0.7 mm, preferably 0.6 mm.
  • the unit can, a variant of the
  • the grid constant of the irradiated areas is between 0.8 and 1.2 mm, in particular between 0.9 and 1.1 mm, preferably 1 mm.
  • the unit can, a variant of the
  • the largest diameter of an elongated welded joint is 0.7 to 0.9 mm, in particular around 0.8 mm.
  • the invention can be used to produce a so-called B crimp form or heart crimp form, as is known from the prior art.
  • the invention can be used to produce a so-called B crimp form or heart crimp form, as is known from the prior art.
  • the invention can be used to produce a so-called B crimp form or heart crimp form, as is known from the prior art.
  • the invention can be used to produce a so-called B crimp form or heart crimp form, as is known from the prior art.
  • the invention makes it possible in particular to use individual wires made of aluminum or an aluminum alloy.
  • the use of aluminum for the strands leads
  • the individual wires made of aluminum or an aluminum alloy are advantageously pressed with a contact section or a contact element (e.g. crimp cable lug, crimp sleeve) made of copper or a copper alloy, e.g. bronze, brass.
  • a contact element e.g. crimp cable lug, crimp sleeve
  • copper or a copper alloy e.g. bronze, brass.
  • the unit according to the invention can be used for high-voltage connector systems.
  • Fig. La-d a first embodiment of a device for pressing and laser welding (Fig. La-c), for a contact element (Fig. Id) with contact sections of different lengths in the transverse direction
  • Fig. 2 is a perspective view of the device from FIG.
  • Fig. 3a-b shows the device from Fig. La-c in a sectional view during laser welding
  • Fig. 4 is an enlargement from Fig. 3b
  • Fig. 5 is a plan view of the contact element after
  • Pressing tool has a stepped support surface
  • Fig. 8 shows a contact element in the initial state, for a
  • FIG. 11 shows the contact element from FIG. 10 inserted into a
  • a device for pressing and laser welding in a third variant seen obliquely from below,
  • FIG. 12 shows the contact element and the device from FIG. 11, seen obliquely from above
  • FIG. 13 shows the device from FIG. 11 closed
  • Fig. La-d show a first variant embodiment
  • this device for pressing and laser welding, this device for contact elements with contact sections with cable lug claws of different lengths in the transverse direction
  • Fig. La is a longitudinal section through the open
  • a contact element 2 (cable lug) is inserted into the pressing tool.
  • Pressing tool is the contact section 4 of the
  • the contact element 2 has here, seen in its longitudinal direction, a connection section 8 with a round tab for further electrical connection and a contact section 4 for pressing with the electrical conductor 5.
  • the contact section 4 is divided into two longitudinal areas with cable lug claws 6, 7 of different lengths in the transverse direction. The shorter cable lug claw 6 then surrounds an area of the conductor 5 which is closer to the connecting section 8 and which is additionally welded with the laser.
  • a higher degree of compression therefore results within the cable lug claw 6, e.g. higher than 70%, in particular higher than 80% or higher than 90%. So here should be an open
  • the longer cable lug claw 7 surrounds an area of the
  • the support surface 10 (see Fig. La) of the lower part 1 is straight here and therefore designed to be the same for both cable lug claws 6.7.
  • a laser part 11 can be lowered into the upper part 3.
  • FIG. 2 shows a perspective view of the device from FIGS. 1 a-c, with a pressed but not yet welded conductor 5.
  • Fig. 3a-b show the device from Fig. La-c in
  • the laser part 11 contains or is connected to a laser as a source of radiation.
  • the laser part can, by means of optics containing lenses, mirrors, etc., emit a laser beam in the irradiation direction, here the vertical, and emit this laser beam along a grid
  • the laser beam can be applied to different, approximately
  • Laser beams 12 are shown here as thin lines.
  • the laser beam can be divided into several laser beams 12 by means of an optical system, which simultaneously impinge on the irradiated areas.
  • Fig. 3a two laser beams 12 are shown, each impinging in an irradiated area and there each down into the conductor 5 and up to the cable lug 6 on the opposite side an elongated one
  • Fig. 3b six laser beams 12 are shown, which each impinge in an irradiated area and form an elongated weld connection 14 down into the conductor 5 and up to the cable lug claw 6 on the opposite side.
  • the elongated welded connections 14 run essentially in the direction of irradiation, that is to say here vertically. They do not overlap or touch each other.
  • FIG. 4 shows an enlargement from FIG. 3b, where the elongated welded connections 14 are shown schematically and can be better recognized.
  • FIG. 5 shows a top view of the contact element 2 after laser welding, where the entry points of the laser beam 12 can each be seen as an irradiated area 13.
  • irradiated areas 13 are regular from each other
  • Compression tool has a stepped support surface.
  • Fig. 7a largely corresponds to Fig. La except for the fact that the bearing surface 10 of the lower part 1 for the contact section 4 corresponds to the two longitudinal regions of the
  • Contact section 4 has a different height, thus forming two steps 15, 16.
  • the cable lug claws 6, 7 can, but need not, be of the same length.
  • FIG. 7b corresponds to FIG. 1b and has the same
  • FIG. 7c corresponds to FIG. 1c and has the same degree of compression.
  • the cable lug claw 6 surrounds an area of the conductor 5 which is closer to the connecting section 8 and which is additionally welded with the laser. Within the cable lug claw 6 there is a higher degree of compression due to the lower step 15, e.g. higher than 70%, in particular higher than 80% or higher than 90%.
  • the individual wires 9 have another one, as in FIG.
  • the cable lug claw 7 again surrounds a region of the conductor 5 which is further away from the connecting section 8 and which is not welded with the laser.
  • Cable lug claw 7 therefore results in a lower one Degree of compression, eg less than 80%.
  • a lower one Degree of compression eg less than 80%.
  • the pressing tool here not having a stepped bearing surface.
  • the two cable lug claws 6,7 of the contact element 2 are of the same length here.
  • the contact element 2 in Fig. 8 again has a
  • the contact section 4 comprises two cable lug claws 6, 7 of the same length here on both sides, which are separated from one another by a slot which, when the contact element is pressed, forms an opening 17 through which the surface of the pressed electrical conductor 5 remains accessible.
  • a corrugation between the two cable lug claws 7, which are further away from the end of the electrical conductor 5 than the cable lug claws 6, serves to secure the electrical conductor 5 from being pulled out of the contact element 2 in the longitudinal direction of the electrical conductor 5
  • Cable lug claws 6,7 could also according to the
  • Design variants in FIGS. 1 to 7 may be of different lengths.
  • the cable lug claws 6, 7 are already bent towards one another, so that an electrical conductor 5 can be inserted between them, as shown in FIG. 10.
  • the insulation of the electrical conductor 5 has been removed in the area of the cable lug claws 6.7.
  • the cable lug claws are here 6,7 relative to the
  • the contact section 4 of the contact element 2, more precisely its cable shoe claws 6, 7, is pressed inwards and then downwards, the ends of the cable lug claws 6, 7 being pressed inwards into the conductor 5.
  • the press or crimp connection is produced in the form of a B crimp.
  • the upper part 3 has a transverse to the longitudinal direction of the
  • the laser beams 12 hit the contact element 2 from the side with the ends of the cable lug claws 6, 7, while in the embodiment variants according to FIGS. 1-7 the laser beams 12 hit the opposite side of the contact element 2.
  • closed pressing tool comprising the upper part 3 and the lower part 1, shown.
  • the opening 17 extends in the transverse direction of the contact element 4, that is normal to the longitudinal direction of the individual wires 9, over the entire width of the pressed electrical conductor 5. This ensures that each individual wire 9 is gripped by an elongated welded connection 14.
  • FIG. 15 the process of laser irradiation on the pressed electrical conductor 5 from FIG. 14 is shown. This process takes place in the pressing tool 1.3, following the
  • the laser beams 12 are arranged in the form of a grid and impinge normally on the surface of the individual wires 9 exposed in the opening 17.
  • the grid-like arrangement of the laser beams 12 here comprises three parallel rows which run normal to the longitudinal direction of the individual wires 9, the middle row being offset by half a grid constant relative to the two outer rows.
  • the outer rows here include, for example, eight laser beams, the middle row seven laser beams.
  • Fig. 16 shows a possible arrangement of irradiated
  • Areas 13 in a larger schematic representation are arranged here in two rows of nine irradiated areas 13 each, which rows together cover a length L which corresponds to the width of the pressed electrical conductor 5.
  • the rows run normal to the longitudinal direction of the individual wires 9.
  • the irradiated areas 13 are spaced apart from one another which corresponds to the raster constant R.
  • irradiated areas 13 extend downward into the plane of the drawing, on one plane, they extend normal to the plane of the drawing and parallel to the rows of irradiated areas 13
  • electrical conductor 5 covers. This ensures that all individual wires 9 are covered by an elongated welded connection 14.
  • the irradiated areas 13 here have a diameter D of 0.6 mm, the grid constant R is 1 mm.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une connexion électrique entre un conducteur (5) électrique comprenant plusieurs fils métalliques individuels (9) et un élément de contact (2). Le conducteur (5) électrique est disposé dans une section de contact (4) de l'élément de contact (2), puis la section de contact (4) et le conducteur (5) électrique sont comprimés l'un avec l'autre de sorte que la section de contact (4) entoure le conducteur (5) électrique. Plusieurs connexions par soudage (14) allongées tenues à distance les unes des autres sont établies entre la section de contact (4) et le conducteur (5) électrique au moyen d'une exposition de la section de contact (4) à un rayonnement laser ou au moyen d'une exposition du conducteur (5) électrique à un rayonnement laser par une ouverture (17) dans la section de contact (4). Les connexions par soudage (14) allongées s'étendent respectivement depuis une zone exposée au rayonnement (13) de la section de contact (4) ou depuis une zone exposée au rayonnement (13) du conducteur (5) électrique, en passant par l'ensemble d'une section transversale du conducteur (5) électrique comprimé jusqu'à une zone de la section de contact (4) faisant face à la zone exposée au rayonnement (13) de sorte que le conducteur (5) électrique est relié à ladite zone de la section de contact (4), les zones exposées au rayonnement (13) étant disposées en forme de trame.
EP20734768.3A 2019-07-03 2020-07-01 Raccordement électrique entre un conducteur électrique et un élément de contact, procédé et dispositif pour sa fabrication Active EP3994767B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19184264.0A EP3761452A1 (fr) 2019-07-03 2019-07-03 Raccordement électrique entre un conducteur électrique et un élément de contact
PCT/EP2020/068540 WO2021001434A1 (fr) 2019-07-03 2020-07-01 Connexion électrique entre un conducteur électrique et un élément de contact

Publications (2)

Publication Number Publication Date
EP3994767A1 true EP3994767A1 (fr) 2022-05-11
EP3994767B1 EP3994767B1 (fr) 2023-01-25

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EP19184264.0A Withdrawn EP3761452A1 (fr) 2019-07-03 2019-07-03 Raccordement électrique entre un conducteur électrique et un élément de contact
EP20734768.3A Active EP3994767B1 (fr) 2019-07-03 2020-07-01 Raccordement électrique entre un conducteur électrique et un élément de contact, procédé et dispositif pour sa fabrication

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US (1) US20220328985A1 (fr)
EP (2) EP3761452A1 (fr)
JP (1) JP2022540058A (fr)
WO (1) WO2021001434A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP4413491B2 (ja) 2002-12-11 2010-02-10 矢崎総業株式会社 電線と接続端子との接続方法
DE102010035424A1 (de) * 2010-08-26 2012-03-01 Audi Ag Verfahren zum Verbinden eines elektrischen Leiters mit einem elektrischen Kontaktteil
DE102012007846B4 (de) * 2012-04-19 2023-06-15 Audi Ag Crimpvorrichtung zum Verbinden eines elektrischen Leiters mit einem elektrischen Kontaktteil, das verformbare Schenkel aufweist
WO2014129219A1 (fr) * 2013-02-23 2014-08-28 古河電気工業株式会社 Borne, structure de connexion de fil, et procédé pour fabriquer une borne
CN104813540B (zh) * 2013-06-26 2018-01-09 古河电气工业株式会社 端子、压接端子、线束及压接端子的制造方法
DE102013010981B3 (de) * 2013-07-01 2014-08-28 Audi Ag Verfahren und Vorrichtung zum Verbinden eines elektrischen Leiters mit einem elektrischen Kontaktteil

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US20220328985A1 (en) 2022-10-13
JP2022540058A (ja) 2022-09-14
WO2021001434A1 (fr) 2021-01-07
EP3761452A1 (fr) 2021-01-06
CN114080737A (zh) 2022-02-22
EP3994767B1 (fr) 2023-01-25

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