Cylindrical secondary battery module and method for producing cylindrical secondary battery module

A cylindrical secondary battery module, comprising:

• a plurality of cylindrical secondary battery cells respectively having a battery case in which an electrode assembly and an electrolyte are accommodated;
• a cell frame at which the plurality of cylindrical secondary battery cells are disposed;
• and
• a lid coupled to the cell frame and having a flame outlet,
• wherein the cell frame includes:
• a plurality of plate members bent along vertically extending fold lines to form a plurality of panels and coupled to intersect each other;
• and
• a space formed between the plurality of plate members so that one of the plurality of cylindrical secondary battery cells is disposed therein, the space having an open top end,
• wherein the plurality of plate members comprise:
• a first cover bent to form at least one first space;
• and
• a second cover coupled to the first cover and bent to form at least one second space,
• wherein at least one downwardly extending fitting groove is formed in a top edge of a first panel of the first cover and at least one upwardly extending fitting groove is formed in a bottom edge of a first panel of the second cover,
• wherein the top edge of the first cover forms a top edge of the first space and the bottom edge of the second cover forms a bottom edge of the second space, and
• wherein the first panel of the first cover and the first panel of the second cover intersect at an angle.