Method for producing bipolar plate string, method for producing bipolar plate and device for carrying out said methods

• Main Authors: BOEHM DANIEL, HERBERG ERIK, GRAETZER MICHAEL, VERBERPAES JEAN-PHILIPPE
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a method for producing a bipolar plate string (214), comprising the following steps: providing a unipolar plate string (200, 202), guiding the unipolar plate string (200, 202) in the direction of a roll gap (104) of a roll pair (106) of a roll arrangement (102) provided with a roll structure (112), emitting a laser beam (110) of a laser arrangement (108) onto a rotating, specular polygonal wheel (146), the laser beam (110) is aligned towards a plurality of individual positions of the surface (210, 212) of one or both of the unipolar plate strings (200, 202), and thus the individual positions are heated to the joining temperature directly before or during the entry of the unipolar plate string (200, 202) into the roll gap (104), and-the laser beam (110) is heated to the joining temperature at the surface (210, 212) under pressure when the unipolar plate string (200, 202) is transported through the roll gap (104). The unipolar plate strings (200, 202) are joined to form a bipolar plate