WATER-RESISTANT POUCH-TYPE SECONDARY BATTERY

摘要

The present invention relates to a pouch-type secondary battery with high water resistance. A pouch-type secondary battery of the present invention that includes a positive terminal, a separator film, and a negative terminal is characterized in that the thickness of the sealing portion of the secondary battery has an outer side having a thinner step than the inside. The present invention can further improve the water resistance and the sealing ability of the sealing portion through a convenient manufacturing process, and has the effect of reducing manufacturing costs.