Cylindrical secondary battery module and method for producing cylindrical secondary battery module
A cylindrical secondary battery module includes: 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. The cell frame includes: a plurality of plate members bent and coupled to intersect each other; and a space formed between the plurality of plate members so that the cylindrical secondary battery cells are disposed therein.
1. 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.
2. The cylindrical secondary battery module according to claim 1 , wherein the first cover and the second cover are coupled so that the at least one first space of the first cover and the at least one second space of the second cover are united to form at least one third space, and
wherein the at least one third space is the space formed between the plurality of plate members so that one of the cylindrical secondary battery cells is disposed in the at least one third space.
3. The cylindrical secondary battery module according to claim 2 , wherein the third space has a polygonal shape.
4. The cylindrical secondary battery module according to claim 1 , wherein the first cover is bent so that a plurality of first spaces are successively formed with a same pattern, and the second cover is bent so that a plurality of second spaces are successively formed with the same pattern.
5. The cylindrical secondary battery module according to claim 1 , wherein the first cover and the second cover are formed with a same shape, and
wherein the first cover and the second cover are coupled so that the at least one first fitting groove of the first cover and the at least one second fitting groove of the second cover are disposed to face each other.
6. The cylindrical secondary battery module according to claim 1 , wherein the cell frame is made of a mica material.
7. A secondary battery pack, comprising a cylindrical secondary battery module defined in claim 1 .
8. A vehicle, comprising a cylindrical secondary battery module defined in claim 1 .