Fuel cell device and case thereof

A fuel cell device, comprising:

• a case including:
• a holder frame;
• a first hemi-case movably attached to a first side of the holder frame;
• and
• a second hemi-case movably attached to a second side of the holder frame opposite to the first side, the first hemi-case and the second hemi-case being movable in an approaching direction in which the first hemi-case and the second hemi-case approach and a separating direction in which the first hemi-case and the second hemi-case separate;
• a fuel cell unit in the case, including a plurality of fuel cells movably arranged inside the holder frame;
• and
• a springy member that urges adjacent two of the fuel cells to enlarge an interval therebetween;
• wherein
• when the first hemi-case and the second hemi-case are moved in the separating direction, adjacent two of the fuel cells are moved by the springy member, thereby enlarging an interval between adjacent two of the fuel cells.

A fuel cell device, comprising:

• a case;
• a fuel cell unit able to be accommodated in and be taken out of the case, the fuel cell unit including a plurality of fuel cells;
• and
• a springy member that urges to separate adjacent two of the fuel cells,
• wherein
• when the fuel cell unit is accommodated in the case, the fuel cells are brought in proximity to each other and the springy member is compressed;
• and
• when the fuel cell unit is taken out of the case, adjacent two of the fuel cells are separated from each other by the springy member.

A liquid fuel cartridge for feeding a liquid fuel into a fuel cell device including a case and a fuel cell unit in the case, the liquid fuel cartridge comprising:

• a tank that stores an amount of liquid fuel, the tank having an opening in a top side thereof;
• a nozzle provided at a bottom side of the tank;
• and
• a cap for closing the opening,
• wherein
• the liquid fuel cartridge is attached to the fuel cell device by inserting the nozzle into the fuel cell device;
• and
• the liquid fuel is fed into the fuel cell device by removing the cap from the opening, whereby the liquid fuel communicates with air.

A fuel cell case for accommodating a plurality of fuel cells, comprising:

• a holder frame;
• a first hemi-case movably attached to a first side of the holder frame;
• and
• a second hemi-case movably attached to a second side of the holder frame opposite to the first side, the first hemi-case and the second hemi-case being movable in an approaching direction in which the first hemi-case and the second hemi-case approach and a separating direction in which the first hemi-case and the second hemi-case separate;
• wherein
• when the first hemi-case and the second hemi-case are moved in the separating direction, an interval between adjacent two of the fuel cells is enlarged.