Interconnector arrangement for a fuel cell stack

摘要

The invention relates to an interconnector arrangement for a fuel cell stack, which can be brought into electrical contact with at least one membrane electrode assembly and which is arranged to separate a cathode flow field of the fuel cell stack from an anode flow field of the fuel cell stack. The invention is characterized in that the interconnector arrangement comprises a hollow space separated from the anode flow field and from the cathode flow field such that a flow of gas through the hollow space may not be more than five percent of flow-off gas through the cathode flow field or the anode flow field. The invention also relates to a fuel cell stack and to a method for manufacturing an interconnector arrangement.

主权项

1. An interconnector arrangement for a fuel cell stack, which can be brought into electrical contact with at least one membrane electrode assembly and which is arranged to separate a cathode flow field of the fuel cell stack from an anode flow field of the fuel cell stack, wherein the interconnector arrangement comprises
a flow field plate separating the cathode flow field from the anode flow field, wherein the flow field plate has an undulating, zigzag-shaped or meandering cross section defining at least one bulge defining a hollow space not directly opposite an electrode, peripheral seals sealing the flow fields, and at least one internal seal separating the hollow space from the anode flow field and from the cathode flow field such that a flow of gas through the hollow space may not be more than five percent of a flow of gas through the cathode or anode flow field.