Cutting device, and lamination apparatus and lamination method for secondary battery comprising the same

A lamination apparatus for a secondary battery, the lamination apparatus comprising:

• a lamination device having a supply unit and a bonding unit, the supply unit being configured to supply electrodes disposed spaced apart by a set gap and disposed on at least one separation sheet, and the bonding unit being configured to bond the at least one separation sheet and the corresponding electrodes passing through the supply unit to manufacture a radical unit sheet;
• and
• a cutting device configured to cut the separation sheet of the radical unit sheet, passing through the lamination device, to manufacture a radical unit constituted by a separator formed from the separation sheet and the electrodes,
• wherein the cutting device comprises:
• a transfer conveyor configured to transfer the radical unit sheet passing through the lamination device;
• a laser cutting unit configured to irradiate a laser onto the separation sheet of the radical unit sheet while the separation sheet is passing through the transfer conveyor, wherein the separation sheet is cut by irradiation of the laser from one end of the separation sheet to another end of the separation sheet in a width direction of the separation sheet to manufacture the radical unit;
• a discharge conveyor separated from the transfer conveyor and configured to transfer the radical unit formed by the laser cutting unit;
• and
• an adjusting unit configured to adjust a speed of the laser irradiation across the separation sheet during cutting of the separation sheet passing through the laser cutting unit,
• wherein the cutting device further comprises a suction unit configured to suction and remove a foreign matter or dust occurring when the laser cutting unit cuts the separation sheet, and
• wherein the suction unit comprises:
• a lower suction portion located between the transfer conveyor and the discharge conveyor and configured to suction and remove a foreign matter or dust occurring below the separation sheet when the separation sheet is cut;
• and
• an upper suction located above the discharge conveyor and configured to suction and remove a foreign matter or dust present on a surface of the radical unit while the radical unit is being transferred by the discharge conveyor.