SECONDARY BATTERY AND ELECTROCHEMICAL CELL HAVING THE SAME

摘要

The present invention relates to manufacture of a high-capacity-stack-type polymer battery by improving the availability of an inner space which is not used as an electrode connection part of a polymer battery. According to the present invention, the inner space availability of a battery is improved by arranging a composition consisting of the welding part of an electrode tap and a lead and the sealing part of a packing material in one region. Damage to the packing material can be prevented due to the welding residue pattern of the electrode tap and a lead welding part. The cost of raw materials can be reduced by not using a separate protection tape.