US 12,334,602 B2
Method for manufacturing a diaphragm-electrode arrangement including a seal
Dominik Giersch, Eberdingen (DE); Egon Moosbrugger, Stuttgart (DE); and Joachim Strauch, Esslingen (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Feb. 3, 2022, as Appl. No. 17/649,845.
Claims priority of application No. 10 2021 201 298.1 (DE), filed on Feb. 11, 2021.
Prior Publication US 2022/0255091 A1, Aug. 11, 2022
Int. Cl. H01M 8/0271 (2016.01); B29C 45/16 (2006.01); H01M 8/1004 (2016.01)
CPC H01M 8/0271 (2013.01) [B29C 45/16 (2013.01); H01M 8/1004 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for manufacturing a diaphragm-electrode arrangement including a seal made of at least one layer material and an electrode material, the method comprising the following steps:
a) providing a band-shaped diaphragm-electrode arrangement made of an electrode material and at least one layer material either from a common roll stockpile or as a layer assemblage of individual rolls;
b) entering the band-shaped diaphragm-electrode arrangement provided according to step a) into an injection molding unit;
c) connecting the electrode material to the at least one layer material by an injection molding process; and
d) filling up cavities and edge areas in the at least one layer material in the injection molding process using injection molding material to create a seal of a section to be severed of the diaphragm-electrode arrangement, wherein:
in step b), the band-shaped diaphragm-electrode arrangement is entered into the injection molding unit and a diaphragm-electrode arrangement section is severed at a cut edge,
after the severing of the diaphragm-electrode arrangement section, the band-shaped diaphragm-electrode arrangement is retracted and an interspace is created between the band-shaped diaphragm-electrode arrangement and the severed diaphragm-electrode arrangement section, and
after the interspace is created, reestablishing in the injection molding unit a connection between the previously severed diaphragm-electrode arrangement section and the band-shaped diaphragm-electrode arrangement by applying the injection molding material to the previously severed diaphragm-electrode arrangement and the band-shaped diaphragm-electrode arrangement, the connection being reestablished while maintaining the interspace.