Method for manufacturing cylindrical battery having multiple tabs and cylindrical battery manufactured using the same

A method for manufacturing a cylindrical battery having multiple tabs, the cylindrical battery including an electrode assembly, a cylindrical pouch case, a plurality of electrode tabs protruding at an upper end of the electrode assembly to provide the multiple tabs, and an electrode lead welded and electrically connected to the plurality of electrode tabs,

• the method comprising the steps of:
• disposing the plurality of electrode tabs on the electrode assembly such that the plurality of electrode tabs protrude at the upper end of the electrode assembly;
• winding the electrode assembly to form the electrode assembly into a cylindrical shape;
• connecting the electrode lead to the plurality of electrode tabs disposed at the upper end of the electrode assembly;
• inserting the electrode assembly into the cylindrical pouch case to produce a battery cell;
• connecting, to the cylindrical pouch case, a gas collecting part for collecting gas generated due to charging and discharging of the electrode assembly;
• and
• forming a guide part on an outer surface of the cylindrical pouch case to cover the cylindrical pouch case for preventing deformation of the battery cell,
• wherein the guide part includes a first slit disposed on a straight line along a longitudinal direction of the cylindrical pouch case, and
• wherein a part of the cylindrical pouch case is drawn out through the first slit to be the gas collection part.