METHOD FOR CUTTING ELECTRODE OF ELECTROCHEMICAL GENERATOR

摘要

PROBLEM TO BE SOLVED: To provide a simplified method for cutting an electrode of an electrochemical generator including a metal sheet, by means of a laser beam of low or moderate power, specifically a cutting method that permits the cutting to be carried out on the internal face of the electrode.SOLUTION: There is provided a cutting method for cutting an electrode 20 of an electrochemical generator including a metal sheet 40 by means of a laser beam of a power that is lower than or equal to 600 W. In the cutting method, one face 44 of the metal sheet is partially coated with a thinly layered band-like body 90 that is called a cutting band and extends so as to define the profile of a cutting path, the optical absorption factor of the cutting band for an emission wavelength of the laser beam being higher than or equal to 0.5 and preferably higher than or equal to 0.8; the laser beam is focused on the cutting band; and the laser beam is driven with a relative movement with respect to the electrode so as to travel the cutting path.SELECTED DRAWING: Figure 3