EP3454420B1 - Procédé de raccordement d'une conduite d'aluminium électrique à un tube d'aluminium - Google Patents

Procédé de raccordement d'une conduite d'aluminium électrique à un tube d'aluminium Download PDF

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Publication number
EP3454420B1
EP3454420B1 EP18192956.3A EP18192956A EP3454420B1 EP 3454420 B1 EP3454420 B1 EP 3454420B1 EP 18192956 A EP18192956 A EP 18192956A EP 3454420 B1 EP3454420 B1 EP 3454420B1
Authority
EP
European Patent Office
Prior art keywords
crimping
tube
wire
welding
aluminium
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.)
Active
Application number
EP18192956.3A
Other languages
German (de)
English (en)
Other versions
EP3454420A1 (fr
Inventor
Olaf Strunk
Nico Langberg
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.)
Strunk Connect Automated Solutions GmbH and Co KG
Original Assignee
Strunk Connect Automated Solutions GmbH and Co KG
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 Strunk Connect Automated Solutions GmbH and Co KG filed Critical Strunk Connect Automated Solutions GmbH and Co KG
Publication of EP3454420A1 publication Critical patent/EP3454420A1/fr
Application granted granted Critical
Publication of EP3454420B1 publication Critical patent/EP3454420B1/fr
Active legal-status Critical Current
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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
    • H01R43/04—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
    • 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
    • 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
    • H01R43/0214—Resistance 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
    • H01R4/10—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
    • H01R4/58—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
    • H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the invention relates to a method for connecting an electrical line having at least one wire made of aluminum to a connecting element made of aluminum and having a tube or a sleeve.
  • connection element z. B. is connected to a conductor by crimping and / or soldering.
  • This connection which has a certain resistance, is generally sufficient for many applications.
  • electrical connections are to be used for high currents or connections with large cross sections, e.g. B. in the automotive high-voltage sector, such as for electric vehicles, through which high currents flow continuously or during load changes, the aforementioned resistance already leads to unacceptable heating of the connection between the connection element and the line.
  • This breaking may still work with a few wires or strands made up of them, but with thicker electrical cables required for power supply in automobiles, this at least partial breaking of the oxide layers is no longer sufficient to be able to produce a halfway acceptable welded connection.
  • the invention is therefore based on the object of demonstrating a method by means of which as many areas of the electrical line as possible can be welded to the connection element.
  • an end piece of the electrical line is first stripped, that the stripped area of the electrical line is inserted into the tube of the connecting element, that the tube is placed in the area that is in the area of the stripped tip of the line in such a way is squeezed so that the at least one wire is held in the tube in such a way that a relative movement between the tube and the at least one wire is prevented, and then the tube is in a second region of the stripped electrical line, which is located further away from the end of the electrical line as the first crimping area, is crimped a second time and then resistance welding of the pipe with the at least one wire in the second crimping area takes place.
  • insulated wires e.g. varnished wires
  • stripping is not absolutely necessary as the insulation evaporates during the later welding process.
  • the first crimping process ensures that the at least one wire of any cross-section, but usually strands and then all of the stranded wires, are fixed in such a way that relative movements are not possible between the tube and the individual wires or between the individual wires themselves are. Since the stranded wire is still in the insulation at the other end of the electrical cable, no relative movement of the wires to one another is to be expected.
  • two squeezing processes can also preferably be carried out simultaneously and the second squeezing process can be placed between the two first squeezing positions. This means that the at least one wire, usually the wires of the strand for the second crimping process, is fixed from both sides in such a way that basically no movement of the wires against each other is possible.
  • the second crimping process is now carried out, the only thing left for the at least one wire of any cross-section or the individual wires of the strand of the electrical cable, in addition to being compressed, is an elongation of each of the individual wires. This elongation occurs for all stranded wires. This causes the oxide layer to burst from the wires, so that all of the stranded wires are freed from the oxide layer as a result of the lengthening.
  • the subsequent welding process can now take place at temperatures that are usual for aluminum. Since all aluminum wires and the pipe are free of the oxide layer, very good welding is achieved; any insulation is evaporated at these temperatures.
  • the second squeezing process z. B. could be carried out by a crimping tool and only then could the welding electrodes be attached to the location of the second crimping process, it has proven to be advantageous that the second crimping process is carried out by at least two welding electrodes. This means that an upsetting tool for the second squeezing process can be saved cost-effectively and the upsetting process can be carried out by the welding electrodes.
  • the first crushing process is expediently carried out by a compression tool, whereby this compression tool should be designed in at least two parts and this two-part or multi-part compression tool completely encloses the pipe after the crushing process.
  • the upsetting tool remains closed during the second crimping process, i.e. H. the cable is not moved and is squeezed at a second point, and the compression tool is only opened after the welding process has been completed.
  • the device for moving the electrical conductor is saved in the corresponding upsetting and welding device.
  • a second drive for the second crimping tool is necessary.
  • the two crimping processes can be carried out much more quickly one after the other if the crimping tools are arranged at two locations next to one another in the welding machine.
  • the Figure 1 shows an electrical line 1, consisting of an aluminum strand 2 which is surrounded by insulation 3. The individual wires of the aluminum strand 2 are indicated. Furthermore, a tube 4 is shown, into whose first open end 5 the aluminum strand 2 of the stripped end of the electrical line 1 is inserted, and at whose second end 6 the connecting element 7 is formed.
  • Figure 2 shows the electrical cable 1 with the connecting element 7 after the crimping and welding process.
  • a first pinch area 9 can be seen in the area of the end 8 of the aluminum strand 2.
  • the aluminum strand 2 is squeezed by the tube 4 in such a way that the individual wires of the aluminum strand 2 can no longer move against each other.
  • a second squeezing area 10 can be seen in the direction of the insulation 3.
  • the aluminum strand 2 was stretched and pressed due to the squeezing process and the fact that the aluminum strand 2 could not perform relative movement to one another either in the area of the squeezing area 9 or in the area of the insulation 3.
  • the oxide layer on almost all of the wires of the aluminum strand 2 has broken down.
  • its internal oxide layer is also broken.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Wire Processing (AREA)

Claims (7)

  1. Procédé de connexion d'une ligne électrique (1) comportant au moins un fil en aluminium à un élément de connexion (7) en aluminium et présentant un tube (4), dans lequel après insertion d'une extrémité dénudée (8) ou - lors de l'utilisation de fils isolés
    - une extrémité non dénudée de la ligne électrique (1) dans le tube (4), le procédé est caractérisé par les étapes de procédé suivantes,
    a) dans un premier processus de pressage, presser le tube (4) dans une première zone de pressage (9), dans laquelle l'extrémité (8) de la ligne électrique (1) est placée de telle sorte que le au moins un fil dans le tube (4) soit maintenu de telle sorte qu'un mouvement relatif entre le tube (4) et le au moins un fil soit empêché,
    b) dans un deuxième processus de pressage, presser le tube (4) dans une deuxième zone de pressage (10) de la ligne électrique (1) qui est plus éloignée de l'extrémité (8) de la ligne électrique que la première zone de pressage (9), dans lequel, à côté d'un changement de section transversale, le au moins un fil s'allonge, et
    c) dans un processus de soudage, soudage par résistance du tube (4) avec au moins un fil dans la deuxième zone de pressage (10).
  2. Procédé selon la revendication 1, caractérisé en ce que
    le deuxième processus de pressage est effectué par au moins deux électrodes de soudage.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que
    que le deuxième processus de pressage et le processus de soudage ont lieu simultanément à la fin du deuxième processus de pressage.
  4. Procédé selon une quelconque des revendications 1 à 3, caractérisé en ce que le premier processus de pressage est effectué par un outil de refoulement.
  5. Procédé selon la revendication 4, caractérisé en ce que l'outil de refoulement enserre le tube pressé (4) en au moins deux parties.
  6. Procédé selon la revendication 4 ou 5, caractérisé en ce que l'outil de refoulement reste fermé pendant le deuxième processus de pressage et n'est ouvert qu'après la fin du processus de soudage.
  7. Procédé selon la revendication 6, caractérisé en ce que une composante dans la direction axiale du au moins un fil, à l'opposé de la première zone de pressage (9), est superposée au deuxième processus de pressage agissant dans la direction radiale.
EP18192956.3A 2017-09-11 2018-09-06 Procédé de raccordement d'une conduite d'aluminium électrique à un tube d'aluminium Active EP3454420B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017215970.7A DE102017215970B3 (de) 2017-09-11 2017-09-11 Verfahren zum Verbinden einer elektrischen Aluminiumleitung mit einem Aluminiumrohr

Publications (2)

Publication Number Publication Date
EP3454420A1 EP3454420A1 (fr) 2019-03-13
EP3454420B1 true EP3454420B1 (fr) 2023-11-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18192956.3A Active EP3454420B1 (fr) 2017-09-11 2018-09-06 Procédé de raccordement d'une conduite d'aluminium électrique à un tube d'aluminium

Country Status (6)

Country Link
US (1) US11038312B2 (fr)
EP (1) EP3454420B1 (fr)
JP (1) JP6720258B2 (fr)
CN (1) CN109494542B (fr)
DE (1) DE102017215970B3 (fr)
MX (1) MX2018010945A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017215970B3 (de) * 2017-09-11 2018-07-26 Strunk Connect automated solutions GmbH & Co. KG Verfahren zum Verbinden einer elektrischen Aluminiumleitung mit einem Aluminiumrohr
CN114220311B (zh) * 2022-01-11 2024-01-26 重庆煌能科技有限公司 一种用于特种作业低压电工安全技术实操考核平台

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Also Published As

Publication number Publication date
EP3454420A1 (fr) 2019-03-13
DE102017215970B3 (de) 2018-07-26
CN109494542B (zh) 2020-10-23
MX2018010945A (es) 2019-03-12
JP2019050202A (ja) 2019-03-28
JP6720258B2 (ja) 2020-07-08
US11038312B2 (en) 2021-06-15
CN109494542A (zh) 2019-03-19
US20190081446A1 (en) 2019-03-14

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