Method and apparatus for manufacturing pouch-type secondary battery

A method for manufacturing a secondary battery, the method comprising:

• a first sealing operation of fusing a lead film to a sealing portion of a pouch accommodating an electrode assembly therein, the lead film being attached to an electrode lead of the electrode assembly;
• and
• a second sealing operation of sealing the sealing portion of the pouch,
• wherein the first sealing operation comprises:
• a heating process of irradiating with a laser beam a region of the sealing portion of the pouch adjacent to the lead film, thereby heating the lead film and melting a resin layer of the region of the sealing portion;
• and
• a bonding process of compressing the region of the sealing portion, thereby bonding the lead film and the melted resin layer to one another,
• wherein the first sealing operation and the second sealing operation are sequentially conducted.