Battery pack manufacturing device and manufacturing method of battery pack

A battery pack manufacturing device comprising:

• a transferring part configured to transfer a plurality of unit cells to a pack frame, the pack frame including a plurality of accommodating parts to receive the unit cells;
• an adjusting part configured to adjust a position of the pack frame;
• and
• a vertical pressing part configured to vertically press the unit cells into the pack frame,
• wherein the transferring part includes a plurality of seating parts on which the unit cells are seated, each seating part having an opening and closing part, and
• wherein the unit cells are vertically dropped and mounted in the accommodating parts of the frame when the opening and closing parts of the seating parts are opened.