Abstract: Systems and methods for welding of parts are described. In one embodiment, a method for ultrasonic welding of parts by means of an ultrasonic welding device including at least a generator, a converter, and a sonotrode based on a set curve of a time-dependent welding parameter appropriate to a welding connection meeting set requirements, where the welding duration corresponding to the set curve runs between a starting time t0 and an end time te, wherein during welding of the parts an actual curve of the time-dependent welding parameter is measured, where in the period between t0 and te the actual curve is compared with the set curve and, depending on the existing difference, at least one process parameter affecting welding is altered such that an equalization of set curve and actual curve occurs during further welding.

Abstract: Schemes for ultrasonically connecting electrical conductors are described herein. In one embodiment, a method for ultrasonically connecting electrical conductors can include providing a compaction chamber including a variable cross-section, a bottom bounded by a sonotrode, a first side bounded by a first anvil, a second side bounded by a shaft, and a top bounded by a second anvil disposed on the shaft; disposing the electrical conductors in the compaction chamber opened at the top; displacing the first anvil towards the shaft; displacing the second anvil towards the first anvil; displacing the second anvil towards the sonotrode; and, ultrasonically connecting the electrical conductors.