Method of manufacturing high-pressure tank

A method of manufacturing a high-pressure tank, the method comprising:

• forming a vessel body including a body portion having a cylindrical shape, a domical portion having a hemispherical shape and provided at an end of the body portion, and a neck portion extending from the domical portion in an axial direction of the domical portion;
• winding fibers around an outer peripheral surface of the vessel body to form a plurality of fiber layers laminated in a radial direction of the vessel body;
• placing, in a mold, the vessel body around which the fibers have been wound, and then injecting a resin onto the neck portion in an axial direction of the vessel body to impregnate the fibers with the resin;
• and
• assembling a cap to the neck portion and assembling a connecting member to the cap, the connecting member being configured to connect a plurality of the high-pressure tanks to each other, wherein
• the connecting member includes a through-hole extending through the connecting member in the axial direction of the vessel body such that the through-hole overlaps with the plurality of fiber layers as viewed in the axial direction of the vessel body when the connecting member has been assembled to the cap, and
• the resin is injected through the through-hole of the connecting member.