BIPOLAR PLATE AND FUEL CELL STACK

• Main Authors: KEITSCH, Oliver, STRÖBEL, Raimund Theo
• Format: Patent
• Language: English; French; German
• Published: 22.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A bipolar plate formed from two interconnected individual plates is provided, which individual plates are each formed with a reactant flow field on plate surfaces facing away from each other, which reactant flow field comprises a plurality of flow ducts for a reaction medium which are delimited by walls of webs, wherein the webs and the flow ducts of one of the individual plates extend in an active region opposite to the webs and the flow ducts of the other of the individual plates, so as to form coolant ducts of a coolant flow field extending between the individual plates. Outside of and/or in an edge area of the active region, there is a lateral offset between the webs of the individual plates, in such a way that coolant ducts of the coolant flow field running adjacent thereto are fluidically connected to one another by means of pass-through openings for distributing a coolant flow. The invention also relates to a fuel cell stack with a plurality of such bipolar plates.