Fluid transfer device and fuel cell with the same

Details Fluid transfer device and fuel cell with the same Fluid transfer device and fuel cell with the same

H - Electricity

01

M

H01M 8/04 (2006.01) F04B 43/08 (2006.01)

Patent

CA 2702443

Provided are a fluid transfer device having higher efficiency than conventional devices and a fuel cell comprising the fluid transfer device. The fluid transfer device according to the present invention comprises a loop-like elastic body 1, at least two piezoelectric elements 3, 3 arranged on the elastic body 1 along a loop direction, and at least one flow path 6 formed along a flat plate part 11 of the elastic body 1. Voltages having phases different from each other are applied to both the piezoelectric elements 3, 3 to generate in the elastic body 1 a flexural wave advancing in the direction of the loop, and this transfers fluid in the flow path 6. The fuel cell according to the present invention comprises an MEA placed in the loop-like elastic body, and a liquid flow path and a gas flow path are formed along the MEA.

L'invention concerne un dispositif de transfert de fluide ayant un rendement plus élevé que les dispositifs classiques et une pile à combustible comportant le dispositif de transfert de fluide. Le dispositif de transfert de fluide comporte un corps élastique en boucle (1), au moins deux éléments piézoélectriques (3, 3) agencés sur le corps élastique (1) suivant la direction de la boucle, et au moins un trajet d'écoulement (6) formé le long d'une section de plaque plate (11) du corps élastique (1). Des tensions ayant des phases différentes l'une de l'autre sont appliquées aux deux éléments piézoélectriques (3, 3) pour générer dans le corps élastique (1) une onde de flexion avançant dans la direction de la boucle, ce qui permet de transférer le fluide dans le trajet d'écoulement (6). La pile à combustible comporte un MEA placé dans le corps élastique en boucle, et un trajet d'écoulement de liquide et un trajet d'écoulement de gaz sont formés le long du MEA.

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