公开(公告)号：US10297851B2

公开(公告)日：2019-05-21

申请号：US15500375

申请日：2015-07-29

申请人： Siemens Aktiengesellschaft

发明人： Torsten Brandt ,  Armin Datz ,  Albert Hammerschmidt ,  Silke Latzel ,  Josef Lersch ,  Arno Mattejat

IPC分类号： H01M8/0284 ,  H01M8/1004 ,  H01M4/92 ,  H01M8/0267 ,  H01M8/1018

摘要： A fuel cell assembly with at least one proton exchange membrane (PEM) fuel cell for generating electrical energy from the reactant gases hydrogen and oxygen, which includes at least one membrane/electrode unit having a membrane that is coated with platinum electrodes and, respectively positioned on each side thereof, a porous gas diffusion layer, or which has a membrane and, respectively positioned on each side thereof, a porous gas diffusion layer that is coated with a platinum electrode, and which includes bipolar plates that lie against the gas diffusion layers and through which, during operation, a coolant flows, where access by at least one of the reactant gases to the membrane is blocked by a mechanical block for a part of an edge region of the membrane/electrode unit In order to prevent damage to the membrane.

公开(公告)号：US10741866B2

公开(公告)日：2020-08-11

申请号：US15500556

申请日：2015-07-28

申请人： Siemens Aktiengesellschaft

发明人： Torsten Brandt ,  Armin Datz ,  Albert Hammerschmidt ,  Silke Latzel ,  Josef Lersch ,  Arno Mattejat

IPC分类号： H01M8/2457 ,  H01M8/0267 ,  H01M4/94 ,  H01M8/023 ,  H01M4/92 ,  H01M8/241 ,  H01M8/0221 ,  H01M8/0284 ,  H01M8/1004 ,  H01M8/1018

摘要： A fuel cell assembly with at least one PEM fuel cell for generating electrical energy from reactant gases includes at least one membrane/electrode having a membrane coated with platinum electrodes and, respectively positioned on each side, a porous gas diffusion layer, or having a membrane and, respectively positioned on each side, a porous gas diffusion layer coated with a platinum electrode, and also includes bipolar plates that lie against the gas diffusion layers and through which, during operation, a coolant flows, wherein at least one of the platinum electrodes has a smaller area than the gas diffusion layer, where the gas diffusion layer protrudes beyond the platinum electrode for a part of an edge region of the membrane/electrode unit, so that the formation of an electrochemical potential in this part of the edge region of the membrane/electrode unit is prevented in order to prevent damage to the membrane.

公开(公告)号：US20140077402A1

公开(公告)日：2014-03-20

申请号：US14118616

申请日：2012-04-16

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： Torsten Brandt ,  Armin Datz ,  Albert Hammerschmidt ,  Joachim Hoffmann ,  Silke Latzel ,  Arno Mattejat

IPC分类号： H01M8/04

CPC分类号： H01M8/04149 ,  H01M2008/1095

摘要： A humidification cell of a fuel cell apparatus includes a first outer plate and a second outer plate. A gas chamber, a humidification water chamber, and a water-permeable membrane that separates the two chambers are disposed between the first outer plate and the second outer plate starting from the first outer plate. A first water-permeable support element is disposed between the first outer plate and the membrane. The first support element is made of a woven fabric formed of a plastic. A discharge and an entrainment of liquid water can be prevented during load changes or other non-stationary fuel cell operating states accompanied by a sudden change of gas volume flow in that the plastic is a fluoropolymer or a fluoroplastic. Advantageously, the fluoropolymer or fluoroplastic is formed at least partly, preferably entirely, of an alternating copolymer of ethylene and chlorotrifluorethylene (E-CTFE).

摘要翻译： 燃料电池装置的加湿电池包括第一外板和第二外板。 从第一外板开始，在第一外板和第二外板之间设置有分隔两个室的气室，加湿水室和透水膜。 第一透水性支撑元件设置在第一外板和膜之间。 第一支撑元件由塑料形成的机织织物制成。 伴随着气体体积流量突然变化的负载变化或其他非固定燃料电池运行状态，塑料是含氟聚合物或氟塑料时，可以防止排放和夹带液态水。 有利地，氟聚合物或氟塑料至少部分地，优选地完全由乙烯和氯三氟乙烯（E-CTFE）的交替共聚物形成。