METHOD FOR PREPARING POUCH-TYPE SECONDARY BATTERY

摘要

The present invention relates to a method for preparing a pouch-type secondary battery. More particularly, the present invention relates to a method for preparing a pouch-type secondary battery, which includes the step of efficiently forming a polymer insulating layer along the outer edge of the sealing surface of a pouch case exposing a metal layer such as Al. According to the present invention, an abnormal reaction and an external short circuit are prevented when the exposed part of a metal layer touches the metallic material of a pack unit, and the economic feasibility and the convenience of the fabrication of a cell and the energy density of a fabricated cell can be improved. [Reference numerals] (AA) Coating a cutting plane with insulating polymer