US 12,080,921 B2
Distributor structure for a fuel cell or electrolyser
Rainer Seitz, Vaihingen Enz (DE); Achim Eisemann, Neuenstadt (DE); Alexander Eifert, Friolzheim (DE); Andre Neidhardt, Ludwigsburg (DE); Arne Stephen Fischer, Leinfelden-Echterdingen (DE); Christoph Haluschka, Strullendorf (DE); Felix Wald, Stuttgart (DE); Friedrich Kneule, Rutesheim (DE); Jan Hendrik Ohs, Renningen (DE); Laszlo Hagymasi, Gerlingen (DE); Laura Bauer, Altendorf (DE); Rolf Lernbecher, Wiernsheim (DE); Stefan Grosse, Gerlingen (DE); and Stefan Schoenbauer, Ditzingen (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/297,044
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Nov. 28, 2019, PCT No. PCT/EP2019/082830
§ 371(c)(1), (2) Date May 26, 2021,
PCT Pub. No. WO2020/109436, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 10 2018 220 464.0 (DE), filed on Nov. 28, 2018.
Prior Publication US 2022/0029175 A1, Jan. 27, 2022
Int. Cl. H01M 8/0258 (2016.01); C25B 1/04 (2021.01); C25B 9/07 (2021.01); C25B 9/77 (2021.01); H01M 8/0226 (2016.01); H01M 8/10 (2016.01)
CPC H01M 8/0258 (2013.01) [C25B 1/04 (2013.01); C25B 9/07 (2021.01); H01M 8/0226 (2013.01); H01M 2008/1095 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A distributor structure (12, 20) for a fuel cell, the distributor structure (12, 20) having a channel structure (48) that interacts with at least one polymer membrane (16) of the fuel cell, wherein the distributor structure (12, 20) is embodied as a plastic part (40) that has electrically conductive properties,
wherein the plastic part (40) has a channel structure (48) on a side (54) facing the polymer membrane (16),
wherein the channel structure (48) has a number of contact points (60) that contact an underside (50) of a polymer membrane (16) or an upper side (52) of a polymer membrane (16), and
wherein each contact point (60) is on a conical tip of the channel structure (48) such that the channel structure (48) tapers from a wider thickness to a narrower thickness as the channel structure approaches respective contact points (60),
wherein a contact surface area of each of the contact points (60) is between 0.1 mm2 and 1 mm2.