EP3750214A1 - Verfahren zum verbinden wenigstens eines elektrischen kontaktelements mit einem flachleiter für ein bordnetz eines kraftfahrzeugs - Google Patents
Verfahren zum verbinden wenigstens eines elektrischen kontaktelements mit einem flachleiter für ein bordnetz eines kraftfahrzeugsInfo
- Publication number
- EP3750214A1 EP3750214A1 EP18705358.2A EP18705358A EP3750214A1 EP 3750214 A1 EP3750214 A1 EP 3750214A1 EP 18705358 A EP18705358 A EP 18705358A EP 3750214 A1 EP3750214 A1 EP 3750214A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact element
- electrical contact
- flat conductor
- stainless steel
- produced
- 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
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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
- H01R25/142—Their counterparts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
- H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
-
- 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
Definitions
- the present invention relates to a method for connecting at least one
- flat conductors preferably made of aluminum
- the installation space and the conductor weight can be greatly reduced in on-board networks of motor vehicles.
- Such flat conductors serve as power distributors or busbars and are laid, for example, along a floor group contour from a rear area to an engine compartment.
- On such flat conductors usually different conductors must be contacted electrically conductive.
- stainless steel bolts are welded to such flat conductor.
- cable lugs can be slipped over and screwed onto the stainless steel bolts.
- a disadvantage for example, affect a result of the stainless steel bolts height. In addition, this can only result in a defined departure direction.
- the at least one electrical contact element comprises a contact region for contacting a further contact element and is produced at least from a stainless steel sheet with a curvature. The curvature dominates the rest of the stainless steel sheet.
- the electrical contact element is arranged with its curvature on the flat conductor. Thereafter, a friction welding is carried out by the arranged on the flat conductor curvature of the electrical contact element by means of a Reibsch spawerkmaschineschwmaschinemaschinemaschinemaschinemaschineschwips offset in relative movement to the flat conductor and thereby a welded connection between the flat conductor and the contact element is produced.
- the flat conductor preferably serves as a power distributor or as a busbar and is preferably made of aluminum.
- the friction welding can be done for example by ultrasonic friction welding by a sonotrode, which is part of the
- Reibsch bulkwerkmaschinezeugs is pressed in the region of the curvature of the electrical contact element on this with a certain pressure or with a certain force.
- a high-frequency, oscillating movement is exerted on the electrical contact element by means of the sonotrode, as a result of which said relative movement between the curvature of the stainless steel sheet and the flat conductor results.
- the curvature in the stainless steel sheet can for example be formed by producing a bead, which then forms on the back of the stainless steel sheet in the form of curvature. It is essential that the curvature dominates the remaining stainless steel sheet, so that during the friction welding process only the curvature of the
- Stainless steel sheet is in contact with the flat conductor. Due to the distance that extends through the Warp in terms of the remaining stainless steel sheet results in the flat conductor, the welding process can be carried out very easily and reliably.
- the inventive method can be particularly cost-effective, since it is a very simple
- the stainless steel sheet has no unfavorable setting and flow behavior, so that a permanently stable welded joint between the flat conductor and the at least one electrical contact element can be ensured.
- An advantageous embodiment of the invention provides that the curvature is produced with an at least substantially circular base, which for
- Making the welded joint is offset by means of the friction welding tool in a rotating relative movement to the flat conductor.
- torsional friction welding is preferably carried out.
- the curvature can, for example, in minimal
- An alternative advantageous embodiment of the invention provides that the curvature is produced with an elongated base surface, which is set to produce the welded joint by means of the friction welding tool in a translational relative movement to the flat conductor.
- the elongated base area is preferably produced in such a way that it is at least substantially orthogonal to the longitudinal extent of the electrical Contact element runs. As a result, the entire electrical contact element can be made particularly compact.
- At least one force application area for the positive engagement of the friction welding tool is produced on the electrical contact element.
- at least one slot-shaped passage opening belonging to the force application area can be produced on the electrical contact element.
- the curvature is made with the circular base, it may be provided, for example, that the curvature is formed by a conical depression, in which case distributed over the circumference, for example, several of these slot-shaped through holes can be made.
- a particularly favorable force application region is formed, in which the friction welding tool can intervene for the expression of the relative movement.
- at least one elevation belonging to the force application region it is also possible for at least one elevation belonging to the force application region to be produced on the electrical contact element.
- a particular area may be partially punched out and then bent so that said elevation is made.
- the electrical contact element is bent upwards, for example, in edge areas, in order to thus provide a particularly good force application area.
- a further advantageous embodiment of the invention provides that the electrical contact element is made exclusively from the stainless steel sheet. Since the electrical contact element is formed in one piece or in one piece in the case, this can be produced particularly cost-effective in large quantities.
- Copper sheet is produced, which are cohesively or positively connected with each other.
- the advantage of this embodiment is that the electrical contact element on the one hand due to the stainless steel sheet particularly good mechanical properties and on the other hand, due to the copper sheet having particularly good electrically conductive properties.
- the stainless steel sheet and the copper sheet can be connected to each other, for example by Toxen, welding and / or embossing.
- the copper sheet is made thicker than the stainless steel sheet.
- the layer thickness of the stainless steel sheet depending on the variant can be kept either thin or small compared to the copper sheet due to the lower conductivity.
- the stainless steel sheet serves as an intermediate layer between the copper sheet and the flat conductor, so that electrochemical corrosion can be prevented.
- galvanic galvanic
- Coatings are dispensed with.
- Overlapping area is connected. For example, it is possible to do that first
- Overlap area is connected to the stainless steel sheet. But it is also possible to first connect the stainless steel sheet with the copper sheet and then the
- Friction welding process are arranged one above the other and connected to each other. This can be done for example by plating.
- a current can flow through the copper sheet and only the current in the region of the weld produced a very short distance through the stainless steel sheet, but then with very large cross-sectional area, must flow through to get to the flat conductor.
- Figure 1 is a perspective view of a flat conductor for an electrical system of a motor vehicle, wherein a first embodiment of an electrical contact element has been connected by friction welding to the flat conductor and a bolt has been inserted through an opening of the electrical contact element.
- Fig. 2 is a perspective view of the first embodiment of the electrical
- Fig. 3 is a perspective view of a second embodiment of the electrical
- Fig. 4 is a perspective view of a third embodiment of the electrical
- Fig. 5 is a perspective view of a fourth embodiment of the electrical
- a contact element which in a central region of serving as a force application point for a Reibsch dowerkmaschinemaschinemaschinemaschine survey has;
- Fig. 6 is a perspective view of a fifth embodiment of the electrical
- FIG. 7 is a perspective view of a sixth embodiment of the electrical
- Fig. 8 is a perspective view of a seventh embodiment of the electrical
- Fig. 9 is a perspective view showing the seventh embodiment of the electrical contact element even before it has been welded to the lead.
- a flat conductor 1 for a vehicle electrical system of a motor vehicle is shown in a perspective view in FIG. 1.
- An insulation 2 surrounding the flat conductor 1 has been cut out in one area.
- an electrical contact element 3 has been connected to the partially stripped flat conductor 1 by a friction welding.
- a bolt 5 has been inserted therethrough.
- a cable lug can be slipped, which is then pressed by a screw on a contact area 6.
- the cable lug has received, for example, a cable or a cable before screwing, which is then electrically connected by means of the electrical contact element 3 to the flat conductor 1.
- a plurality of such electrical contact elements 3 are connected by friction welding at different positions with the flat conductor 1.
- FIG. 2 shows the same embodiment of the electrical contact element 3 as in FIG. 1 in a perspective view.
- This embodiment of the electrical contact element 3 is exclusively and completely made of a stainless steel sheet S.
- the stainless steel sheet S has a curvature 7, which according to the present illustration the underside of the electrical contact element 3 has been produced. This curvature towers over 7 according to the present illustration, down the rest of the
- the curvature 7 was produced in the form of a circular base. Opposite of the curvature 7, the electrical contact element 3 has a corresponding conical recess 8 with a circular base. For producing the welded connection between the electrical contact element 3 and the flat conductor 1, the electrical contact element 3 with its curvature 7 is arranged on the flat conductor 1. Subsequently, a friction welding process is performed by the am
- the curvature 7 for producing the welded connection is set into a rotating relative movement to the flat conductor 1 by means of the friction welding tool.
- a sonotrode can act on the electrical contact element 3 and set the curvature 7 in rotational ultrasonic oscillations, as a result of which the friction welding process is carried out.
- the resulting friction causes heating and plasticization of the electrical contact element 3 in the region of the curvature 7 and at the corresponding position of the flat conductor 1.
- a second embodiment of the electrical contact element 3 is shown in a perspective view.
- the embodiment shown here differs from the embodiment of the electrical contact element 3 shown in FIG. 2 only in that a plurality of slot-shaped passage openings 9 have been produced in the region of the recess 8, which serve as a force application area for a correspondingly designed
- said friction welding tool can engage positively and thereby during the
- a third embodiment of the electrical contact element 3 is shown in a perspective view.
- the embodiment shown here differs from the embodiment shown in FIG. 3 only in that, as force application regions, respective elevations 10 have been formed or reshaped on the electrical contact element 3. At respective longitudinal edges of the electrical contact element 3, the elevations 10 were formed, so that at the elevations 10 said
- Reibsch spallier theory can attack to offset the electrical contact element 3 in said relative movement during the friction welding operation. In this case, it is possible to ensure that the friction-welding tool acting on the elevations 10 does not touch the flat conductor 1 during the friction-welding operation.
- FIG. 5 shows a perspective view of a fourth embodiment of the electrical contact element 3, wherein this embodiment differs from the embodiment shown in FIG. 4 in that an elevation 11 has been produced in a middle region of the electrical contact element 3 as a force application region ,
- This elevation 11 can be produced, for example, first by a punching process and then by bending up the partially punched-out area.
- the elevation 1 1 exactly in the opposite direction as the curvature not visible here 7, so that the Reibsch spawerkmaschinemaschinemaschine can easily attack on the electrical contact element 3, without touching the flat conductor 1 during the Reibsch dervorgangs.
- FIG. 6 shows a fifth embodiment of the electrical contact element 3 in a perspective view.
- the electrical contact element 3 in the form of a sheet metal composite of the stainless steel sheet S and a copper sheet K was prepared, which have been materially or positively connected with each other.
- the stainless steel sheet S was outside of the buckle 7 with the copper sheet K in one
- Overlap area 12 connected.
- the stainless steel sheet S and the copper sheet K can be connected to each other, for example, by toxins, welding or embossing.
- the connection of the two sheets S, K can be done either before the friction welding or after the friction welding.
- FIG. 7 shows a sixth embodiment of the electrical contact element 3 in a perspective view.
- Contact element 3 is again a sheet metal composite of a
- the copper sheet K was placed on the side facing away from the buckle 7 on the stainless steel sheet S.
- the copper sheet K extends very close to the region of the curvature 7, not recognizable here, whereby a particularly good conductivity can be achieved.
- an eighth embodiment of the electrical contact element 3 is shown in a perspective view, this in turn in the form of a sheet metal composite of a copper sheet K and a unspecified stainless steel sheet S has been prepared.
- the contact element 3 is made only of stainless steel. The one shown here
- Embodiment of the electrical contact element 3 differs from all previous embodiments in that the curvature 7, which is not visible in the present perspective (see FIG. 9), has been produced with an elongated shape or base area. To produce the welded joint, this curvature 7 is displaced by means of the friction welding tool into a translatory relative movement to the flat conductor 1. The curvature 7 extends transversely to the main extension direction of the electrical contact element 3. Since the said relative movement transversely to
- the electrical contact element 3 can be made relatively short.
- the stainless steel sheet S and the copper sheet K are produced by a plating process to a two-layer composite material and are thereby before the
- the copper sheet K has an at least substantially similar curvature as the curvature 7 of the stainless steel sheet S.
- the same embodiment of the electrical contact element 3 as shown in Fig. 8 is shown only from another perspective.
- the stainless steel sheet S is substantially thinner than the copper sheet K is.
- the thickness of the stainless steel sheet S and the copper sheet K can be chosen depending on the variant. In particular, due to the lower electrical conductivity of the
- the respective stainless steel sheets S serve as an intermediate layer in order to prevent electrochemical corrosion between the copper sheet K and the copper sheet K.
- a particularly good electrical conductivity of the electrical contact element 3 results.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2018/053254 WO2019154506A1 (de) | 2018-02-09 | 2018-02-09 | Verfahren zum verbinden wenigstens eines elektrischen kontaktelements mit einem flachleiter für ein bordnetz eines kraftfahrzeugs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3750214A1 true EP3750214A1 (de) | 2020-12-16 |
| EP3750214B1 EP3750214B1 (de) | 2024-06-05 |
Family
ID=61226561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18705358.2A Active EP3750214B1 (de) | 2018-02-09 | 2018-02-09 | Verfahren zum verbinden wenigstens eines elektrischen kontaktelements mit einem flachleiter für ein bordnetz eines kraftfahrzeugs |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3750214B1 (de) |
| CN (1) | CN111699594B (de) |
| WO (1) | WO2019154506A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019126012A1 (de) * | 2019-09-26 | 2021-04-01 | Te Connectivity Germany Gmbh | Schweißverfahren |
| DE102020112051B3 (de) * | 2020-05-05 | 2021-09-30 | Auto-Kabel Management Gmbh | Verbindungsanordnung und Verfahren zur Herstellung einer Verbindungsanordnung |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007021891A1 (de) * | 2007-05-10 | 2008-11-13 | Ejot Gmbh & Co. Kg | Verfahren zur Herstellung einer Reibschweißverbindung und Gestaltung der Reibschweißverbindung |
| DE102012214158A1 (de) * | 2012-08-09 | 2014-02-13 | Lisa Dräxlmaier GmbH | Kontaktelemente zur Kontaktierung von Flachleitern |
| US9601837B2 (en) * | 2014-01-31 | 2017-03-21 | Ford Global Technologies, Llc | Spin-welded electrical ground and spin welding methods |
| DE102015217383A1 (de) * | 2015-09-11 | 2017-03-16 | Bayerische Motoren Werke Aktiengesellschaft | Masseanschluss für ein Aluminiumbauteil |
| DE102016105768B3 (de) * | 2016-03-30 | 2017-03-23 | Auto-Kabel Management Gmbh | Elektrischer Leiter mit einer Reibschweißhülse |
-
2018
- 2018-02-09 CN CN201880089017.5A patent/CN111699594B/zh active Active
- 2018-02-09 WO PCT/EP2018/053254 patent/WO2019154506A1/de not_active Ceased
- 2018-02-09 EP EP18705358.2A patent/EP3750214B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3750214B1 (de) | 2024-06-05 |
| CN111699594B (zh) | 2022-09-13 |
| WO2019154506A1 (de) | 2019-08-15 |
| CN111699594A (zh) | 2020-09-22 |
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