One piece bipolar plate with spring seals

H - Electricity – 01 – M

Patent

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Details

H01M 2/08 (2006.01) H01M 2/14 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2542355

A PEM fuel cell includes a cathode plate for directing a first fluid along a surface thereof. An anode plate directs a second fluid along a surface thereof. An MEA is oriented in a first direction. The MEA includes an anode face opposing the anode plate and a cathode face opposing the cathode plate. A plate margin includes first and second header apertures oriented in a second direction perpendicular to the first direction. A first seal is disposed between the anode plate and the MEA. The first seal defines a first fluid communication path between the first header aperture and the anode plate. A second seal is disposed between the cathode plate and the MEA. The second seal defines a second fluid communication path between the second header aperture and the cathode plate. The first and second seals allow the first and second fluid to flow through respective passages thereon in a direction parallel the first direction.

Une pile à combustible à membrane échangeuse de protons (PEM) comporte une plaque cathode conçue pour diriger un premier fluide le long d'une de ses surfaces. Une plaque anode dirige un second fluide le long d'une de ses surfaces. Un ensemble membrane-électrode (MEA) est orienté suivant une première direction. L'ensemble MEA inclut une face anode opposée à la plaque anode et une face cathode opposée à la plaque cathode. Un bord de plaque comprend une première et une seconde ouverture de tête orientées suivant une seconde direction perpendiculaire à la première direction. Un premier joint est disposé entre la plaque anode et l'ensemble MEA. Ce premier joint définit un premier chemin de communication fluidique entre la première ouverture de tête et la plaque anode. Un second joint est disposé entre la plaque cathode et l'ensemble MEA. Ce second joint définit un second chemin de communication fluidique entre la seconde ouverture de tête et la plaque cathode. Le premier et le second joint permettent au premier et au second fluide de s'écouler par des passages respectifs présents en surface suivant une direction parallèle à la première direction.

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