公开(公告)号：US20220320533A1

公开(公告)日：2022-10-06

申请号：US17846801

申请日：2022-06-22

申请人： EKPO Fuel Cell Technologies GmbH

发明人： Peter Stahl ,  Juergen Kraft

IPC分类号： H01M8/0273 ,  H01M8/0206 ,  H01M8/0258 ,  H01M8/2418 ,  H01M8/0297

摘要： A method for producing a multi-layer bipolar plate for an electrochemical device is disclosed. The method includes producing at least one sealing element made of an elastic material on a first bipolar plate layer of the bipolar plate; connecting the first bipolar plate layer with the sealing element produced thereon and a second bipolar plate layer of the bipolar plate by welding along at least one connection welding seam, in which method an impairment to the sealing element produced on the first bipolar plate layer as a result of a subsequent welding operation can be reliably avoided and the freedom of design of the electrochemical unit is preferably increased, and that during the welding operation, the second bipolar plate layer faces toward a welding energy source and that during the welding operation, a weld pool produced by the welding energy source does not completely penetrate the first bipolar plate layer.