Fuel cartridge for fuel cells

H - Electricity – 01 – M

Patent

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Details

H01M 8/02 (2006.01) H01M 2/00 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2513650

A versatile fuel cartridge for storing methanol and water, methanol/water mixture or methanol/water mixtures of varying concentrations is disclosed. The present invention utilizes a filler insert preferably occupying a small portion of the volume of the fuel cartridge, so that the fuel cartridge may hold more fuel to ensure a long life of the fuel cartridge. The filler insert is capable of wicking and transporting the fuel to the MEA. Additionally, the filler insert remains in physical contact with the fuel in any orientation of the fuel cartridge and at any fuel level in the fuel cartridge. The fuel cartridge may have more than one chamber, and preferably each chamber contains a different concentration of fuel. Optionally, the fuel cartridge may also include a pump to initiate fuel flow from the fuel reservoir. The pump may also regulate the flow of fuel and importantly to shut off the flow of fuel, when necessary.

L'invention concerne une cartouche de combustible souple permettant de stocker du méthanol et de l'eau, un mélange méthanol/eau ou des mélanges méthanol/eau de concentrations variées. Cette invention utilise un élément d'excipient qui occupe de préférence une petite partie du volume de la cartouche de combustible de manière que la cartouche de combustible puisse contenir plus de combustible afin d'assurer une longue durée à la cartouche de combustible. L'élément d'excipient peut provoquer un effet de mèche et transporter le combustible vers MEA. De plus, l'élément d'excipient reste en contact physique avec le combustible quel que soit le sens de la cartouche de combustible et quel que soit le niveau de carburant dans la cartouche de combustible. Cette cartouche de combustible peut posséder plus d'une chambre et, de préférence, chaque chambre contient une concentration différente de combustible. Facultativement, la cartouche de combustible peut aussi comprendre une pompe afin d'entraîner un flux de combustible depuis le réservoir de combustible. Cette pompe peut aussi réguler le flux de combustible et couper le flux de combustible le cas échéant.

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