Device and method for the friction-stir welding of an assembly for storing electricity

摘要

The invention relates to a method for connecting two energy storage assemblies (10) together, each energy storage assembly including a sealed metal housing, in which: a connector strip (30), which is sized so as to contact the end surface of each of the housings, is positioned on the end surfaces (24) of two housings arranged side by side; and the strip is friction-stir welded to each of the housings.

主权项

1. A method for connecting two energy storage assemblies, each energy storage assembly comprising a sealed housing, each housing comprising a tubular element and a lid closing the tubular element at its end, the method comprising:
a step of positioning a connector strip on a planar part of two end surfaces of each lid of the two sealed housings placed side by side, said connector strip being sized to be in contact with the end surface of each of the lids; a step of welding the connector strip to each of the lids, wherein the welding is a friction stir welding using a friction-stir device including a body, and a head of said body is placed in contact with the connector strip or in contact with the connector strip and the lid, and by driving in rotation and translating said body along a predetermined axis corresponding to a normal of the end surface, said body enters into the material of the lid and the material of the connector strip in order to weld them and said body is also moved in order to form at least one weld bead between the connector strip and the lid.