Patent ID: 8287629

Claim:
A hydrogen gas storage device comprising: a plurality of tank modules each having a hollow outer shell and a heat conductive member, the hollow outer shell portion being formed of metal and receiving a hydrogen absorbing metal, and the heat conductive member being capable of conducting heat to both of the outer shell portion and the hydrogen absorbing metal; at least one tank holder configured by fastening and fixing a plurality of separate holder components together using a fastening member; and a heat medium passage formed in at least one of the holder components, a heat medium flowing in the heat medium passage, wherein the holder components have recessed portions each corresponding to the shape of a side portion of the corresponding tank module, the recessed portions holding the corresponding tank modules individually, heat exchange occurring between the heat medium flowing in the heat medium passage and the tank modules, and wherein the heat medium passage is formed in such a manner that the tank modules are exposed to the heat medium flowing in the heat medium passage.