Welding Device and Welding Method for Producing a Material Bond Connection between a Conductor and a Connecting Part

Abstract

The subject matter relates to a welding device as well as a welding method for producing a material bond connection between a conductor (10) and a connecting part (8), with at least one ultrasonic welding tool (4), wherein at least part of a contact surface (18) of the connecting part (8) contacts at least part of a contact surface (16) of the ultrasonic welding tool (4).

Claims

1-9. (canceled)

10. Welding device for producing a material bond connection between a conductor and a connecting part, with at least one ultrasonic welding tool, pressing tool and at least on connecting part, wherein at least a part of a contact surface of the connecting part contacts at least a part of a contact surface of the ultrasonic welding tool, wherein the at least one part of the contact surface of the connecting part and the at least one part of the contact surface of the ultrasonic welding tool have profilings corresponding substantially to one another and the pressing tool is arranged for fixing, with a force fit, the connecting part onto the ultrasonic welding tool with at least two surfaces of the connecting part not to be welded.

11. Welding device according to claim 10, wherein that the profilings are formed by substantially mutually corresponding wave-shaped profilings of at least part of the contact surfaces of the connecting part and of the ultrasonic welding tool.

12. Welding device according to claim 10, wherein the profilings are formed by substantially mutually corresponding corrugated profilings of at least part of the contact surfaces of the connecting part and of the ultrasonic welding tool.

13. Welding device according to claim 10, wherein the conductor is a flat conductor or a bus bar and/or the connecting part is a flat part.

14. Welding device according to claim 10, wherein the connecting part is formed from an aluminum material or a copper material, in particular in that the connecting part is formed from a composite material.

15. Welding device according to claim 10, with at least one conductor, wherein the welding device has a further ultrasonic welding tool, at least part of a contact surface of the further ultrasonic welding tool contacts at least part of a contact surface of the conductor, and the at least one part of the contact surface of the further ultrasonic welding tool and/or the at least one part of the contact surface of the conductor have a further profiling.

16. Welding device according to claim 15, wherein the at least one further profiling and/or the further profilings are formed by wave-shaped profilings, by serrated profilings or by fluted profilings.

17. Welding method for producing a material bond connection between a conductor and a connecting part, in which the connecting part is arranged on at least one ultrasonic welding tool, wherein at least a part of a contact surface of the ultrasonic welding tool and at least a part of a contact surface of the connecting part are in contact with each other, wherein at least one part of the contact surface of the connecting part and the at least one part of the contact surface of the ultrasonic welding tool have profilings corresponding to one another, wherein at least a portion of the connecting part is welded to the conductor by means of the ultrasonic welding tool, wherein the at least one part of the contact surface of the connecting part and the at least one part of the contact surface of the ultrasonic welding tool at least partially interlock and the connecting part is fixed, with a force fit, the onto the ultrasonic welding tool with at least two surfaces of the connecting part not to be welded by the pressing tool.

Description

[0023] In the following, the subject matter is explained in more detail with reference to a drawing showing embodiments. In the drawing show:

[0024] FIG. 1 a schematic view of an embodiment of a welding device, and

[0025] FIG. 2 shows another embodiment of a welding device in a schematic view.

[0026] FIG. 1 shows a welding device 2 in a schematic view comprising a lower ultrasonic welding tool 4 and an upper ultrasonic welding tool 6. The lower ultrasonic welding tool 4 can be formed, for example, as a sonotrode and the upper ultrasonic welding tool 6 as an anvil. It is also possible that the lower ultrasonic welding tool 4 is formed, for example, as an anvil and the upper ultrasonic welding tool 6 is formed as a sonotrode. A connector 8 is arranged on the lower ultrasonic welding tool 4, which is welded to a conductor 10. The conductor 10 has an insulated area 12 and a stripped area 14.

[0027] Both the connecting part 8 and the lower ultrasonic welding tool 4 have contact surfaces 16 and 18 on their surfaces facing each other. On at least a part of the contact surfaces 16 and 18, the connecting part 8 and the lower ultrasonic welding tool 4 have mutually corresponding profilings 20 and 22. The profilings 20 and 22 are wave-shaped and lead to a positive interlocking of the connecting part 8 and the lower ultrasonic welding tool 4, whereby the process accuracy can be improved during the welding process.

[0028] FIG. 2 shows a further embodiment of a welding device 2 in a schematic view. The conductor 10 is designed as a flat conductor and has a stranded conductor 11 with an insulation 13, the insulation 13 being removed on the side to be welded to a connecting part 8. On at least a part of the contact surfaces 16 and 18, the connecting part 8 and the lower ultrasonic welding tool 4 have profiles 24 and 26 corresponding to one another, the profiles 24 and 26 being formed in a corrugated manner.

[0029] After the connecting part 8 has been arranged on the lower ultrasonic welding tool 4, the connecting part 8 is non-positively fixed with the aid of pressing means 29. The upper ultrasonic welding tool 6 has a serrated profiling 30 on at least part of its contact surface 28, with the aid of which the conductor 10 can be additionally fixed during the welding process.