BIPOLAR PLATE FOR A FUEL CELL ARRANGEMENT, IN PARTICULAR FOR PLACEMENT BETWEEN TWO ADJACENT MEMBRANE ELECTRODE ARRANGEMENTS

• Main Authors: FINSTERWALDER, FLORIAN, SCHUDY, MARKUS, KLEEMANN, JOERG, BLANK, FELIX
• Format: Patent
• Language: English; French; German
• Published: 26.02.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a bipolar plate (3) for a fuel cell arrangement (1), in particular for placement between two adjacent membrane electrode arrangements, comprising at least one or two plates disposed plane-parallel relative to one another, wherein a flow field (F) is formed from the channel structures made in the respective plate at least on one or both outer sides, respectively, said channel structures comprising a plurality of channels (K) running between a fluid inlet (E) and a fluid outlet (A) and webs (S) running between two channels (K). According to the invention, the channels (K) and/or the webs (S) comprise at least one varying channel width (b1), one varying web width (b2) and/or one varying channel distance (a) on at least one of the outer sides along a flow direction (R) of a fluid between the fluid inlet (E) and the fluid outlet (A).