Patent ID: 8141739

Claim:
A hydrogen storage tank, comprising: a cartridge comprising a cartridge main body portion in cylindrical form which is filled with a hydrogen occluding substance; a fixed side axial portion which is provided on one end side along the axial line of the cartridge main body portion; a free side axial portion which is provided on the other end side along the axial line of the cartridge main body portion, a flow path pipe for heat exchange provided in or around the cartridge, and an inner fluid supplying flow path penetrating through the fixed side axial portion in the direction of the axial line connected to the flow path pipe for heat exchange; a liner within which the cartridge is provided comprising a liner torso portion having a space for containing the cartridge main body portion, a fixed side end portion which is provided on one end side of the liner torso portion so as to protrude via a portion in dome form and where a fixed side opening for supporting the fixed side axial portion of the cartridge is created, and a free side end portion which is provided on the other end side of the liner torso portion so as to protrude via a portion in dome form and where a free side opening for supporting the outer periphery of a support plug for supporting the free side axial portion of the cartridge is created, wherein the liner is formed of one piece of metal material without a seam between the liner torso portion and the fixed side end portion and without a seam between the liner torso portion and the free side end portion, wherein the fixed side opening of the liner fixes and supports the fixed side axial portion of the cartridge and is sealed by a sealing plug having an outer fluid supplying flow path connected to the inner fluid supplying flow path for supplying fluid for heat exchange from outside the cartridge to the inner fluid supplying flow path, the free side opening of the liner is sealed with the support plug, the free side axial portion of the cartridge is provided in and supported by a recess created in the support plug so as to be moveable forward and backward in the direction of the axial line, a support plug flow path for connecting the recess to the outside is provided in the support plug, and a cartridge flow path comprising a through hole which penetrates through the free side axial portion so as to be connected to the cartridge main body portion is provided in the cartridge, wherein the support plug flow path and the cartridge flow path are connected via the recess.