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1. (WO2018141319) BIPOLAR PLATE WITH IMPROVED FLOW DISTRIBUTION FOR A FUEL CELL

Pub. No.:    WO/2018/141319    International Application No.:    PCT/DE2017/101086
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Thu Dec 21 00:59:59 CET 2017
IPC: H01M 8/0206
H01M 8/0232
H01M 8/0265
H01M 8/0254
H01M 8/1018
Applicants: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Inventors: HAUβMANN, Jan
ÖSTREICHER, Hanna
Title: BIPOLAR PLATE WITH IMPROVED FLOW DISTRIBUTION FOR A FUEL CELL
Abstract:
The invention relates to a bipolar plate (1) for a fuel cell, comprising a corrugated plate (1a) with a hole pattern (2), consisting of at least one first row of holes (2a), and a second plate (1b), which is arranged on the corrugated plate (1a) in a sealing manner. The corrugated plate (1a) is made of a sheet metal and has a uniform waved shape of ascending and descending waves (3a, 3b). Furthermore, the hole pattern (2) is provided for the passage of a gas substantially transversely to the wave shape, and the at least one first row of holes (2a) has a first respective cross-sectional opening (4a) in a respective ascending wave (3a) in the flow direction of the gas, said cross-sectional opening being larger than a respective second cross-sectional opening (4b) of the at least one first row of holes (2a) in a respective descending wave (3b). The invention additionally relates to a fuel cell comprising at least one such bipolar plate (1).