Patent ID: 8628877
Filing Date: 2014-01-14
Classification: H01G,Y02P,Y10T

Abstract:
1. A process for manufacturing an electric energy storage assembly comprising a cylindrical coil element comprising at least two electrodes and at least one separator wound together in turns, each electrode overlapping at a respective axial end of the coil element to form a current-collecting section on which at least one current-collecting piece connected electrically to a cover is intended to be welded, said cover closing off a casing accommodating the coil element, wherein the process comprises a radial crushing step of an end of at least one current-collecting section, wherein the radial crush step is carried out by application of least one roller comprising at least one rotating ball compressing the end of said at least one current-collecting section from the centre to the periphery of the end of said at least one current-collecting section.