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Connecting elements and methods for the electrical connection between a light-weight metal conductor and an electrical contact, in particular for use in motor vehicles are disclosed. A metal sleeve is cold welded to the conductor. A contact element is connected to the metal sleeve in an electrically

Connecting elements and methods for the electrical connection between a light-weight metal conductor and an electrical contact, in particular for use in motor vehicles are disclosed. A metal sleeve is cold welded to the conductor. A contact element is connected to the metal sleeve in an electrically conductive manner and can be connected to the contact. A hardenable liquid seals, in a gas-tight manner, a contact element-side opening in the metal sleeve cold welded to the light-weight metal conductor.

대표청구항 ▼

What is claimed is: 1. A connecting element for the electrical connection between a light-weight metal conductor and an electrical contact, for use in motor vehicles, comprising: a metal sleeve cold welded to the light-weight metal conductor; a contact element is connected to the metal sleeve in an

What is claimed is: 1. A connecting element for the electrical connection between a light-weight metal conductor and an electrical contact, for use in motor vehicles, comprising: a metal sleeve cold welded to the light-weight metal conductor; a contact element is connected to the metal sleeve in an electrically conductive manner and can be connected to a contact of an electrical consumer; and a gas-tight hardenable liquid seal disposed in a contact element-side opening in the metal sleeve cold welded to the light-weight metal conductor. 2. The connecting element according to claim 1, wherein the contact element is soldered to the metal sleeve. 3. The connecting element according to claim 1, wherein the contact element is cold welded to the metal sleeve. 4. The connecting element according to claim 1, wherein a portion of the metal sleeve protrudes from the conductor, once slipped onto a stripped end of the conductor, and the contact element-side end of the metal sleeve is cold welded to the conductor, and wherein the portion of the metal sleeve protrudes from the conductor is substantially pressed. 5. The connecting element claim 1, wherein partial regions of the metal sleeve cold welded to the light-weight metal conductor are reshaped into the cross section of the light-weight metal conductor. 6. The connecting element claim 1, wherein a region of transition of the light-weight metal conductor and metal sleeve includes an electrical insulator to insulate the transition from the environment. 7. The connecting element claim 6, wherein the electrical insulator comprises plastics material tube placed and shrunk onto the region of transition. 8. The connecting element claim 6, wherein the electrical insulator comprises one of a sheathing or painting on the region of transition. 9. The connecting element according to claim 1, wherein the light-weight metal conductor is an aluminium conductor, and wherein the metal sleeve is a copper sleeve. 10. The connecting element according to claim 9, wherein the light-weight metal conductor is an aluminium stranded conductor, and wherein the metal sleeve is a copper sleeve made of electrolytic copper. 11. A method for manufacturing a connecting element for the electrical connection between a light-weight metal conductor and an electrical contact, for use in motor vehicles, the method comprises: cold welding a metal sleeve to the light-weight metal conductor; connecting the metal sleeve to a contact element, wherein the contact element can in turn be connected to the contact; and gas-tight sealing a contact element-side opening in the cold welded metal sleeve with a hardenable liquid. 12. The method according to claim 11, wherein cold welding a metal sleeve to the light-weight metal conductor comprises ultrasonic cold welding the metal sleeve to the light-weight metal conductor. 13. The method according to claim 11, wherein, during cold welding, at least parts of the metal sleeve are cold welded into the cross section of the light-weight metal conductor. 14. The method according to claim 11, wherein gas-tight sealing a contact element-side opening in the cold welded metal sleeve with a hardenable liquid comprises gas-tight sealing the contact element-side opening in the cold welded metal sleeve with solder. 15. The method according to claim 11, wherein gas-tight sealing a contact element-side opening in the cold welded metal sleeve with a hardenable liquid comprises gas-tight sealing the contact element-side opening in the cold welded metal sleeve with an electrically conductive adhesive. 16. The method according to claim 11, wherein the hardenable liquid seeps into a contact element-side opening in the metal sleeve. 17. The method according to claim 11, further comprising cold welding the metal sleeve to the contact element. 18. The method according to claim 17, wherein comprising cold welding the metal sleeve to the contact element comprises ultrasonic cold welding the metal sleeve to the contact element. 19. An electrical connector and conductor combination for use in motor vehicles, the combination comprising: a light-weight metal conductor; a metal sleeve having a first end ultrasonically cold welded to the light-weight metal conductor and second end opposite the first end, the second end having an opening; a contact element electrically connected to the second end of the metal sleeve, the contact element adapted to be connected to a contact of an electrical consumer; and a gas-tight hardenable liquid seal disposed in the opening in the second end of the metal sleeve. 20. The electrical connector and conductor combination according to claim 19, wherein the light-weight metal conductor comprises an aluminium conductor and the metal sleeve is formed of electrolytic copper. 21. The electrical connector and conductor combination according to claim 19, wherein, the gas-tight hardenable liquid seal disposed in the opening in the second end of the metal sleeve is also disposed to electrically connect the contact element to the metal sleeve.