Vehicle fluid storage device and method of manufacturing the same

An assembly, the assembly comprising:

• a plurality of the vehicle fluid storage devices;
• and
• a connection section configured to connect the vehicle fluid storage devices to an external device,
• wherein each of the vehicle fluid storage devices includes:
• a storage container having a fluid storage space formed inside and an opening portion formed on at least one side;
• a first connector including a first connection region arranged adjacent to the opening portion on the inside of the storage container and a second connection region extending from the first connection region so as to be connectable to the connection section;
• a holder connected to the first connection region between the storage container and the first connection region and coupled to the storage container by welding;
• a second connector connected to the first connector so as to surround at least a portion of the first connector, wherein the second connector is fastened to the second connection region and is contact with the holder;
• and
• a leak-preventing section configured to maintain airtightness between the first and second connectors, wherein the leak-preventing section includes:
• a first ring member arranged between the holder that surrounds the first connection region and the second connector;
• a second ring member arranged adjacent to an end of the holder between the first connection region and the second connection region;
• and
• a third ring member arranged between the first connection region and the second connection region.