METHOD FOR DEAERATING SECONDARY BATTERY USING CENTRIFUGAL FORCE

摘要

The present invention provides a method for manufacturing a battery cell, which is a method for manufacturing a battery cell having an electrode assembly and electrolyte embedded inside a battery case made from a laminate sheet including a resin layer and a metal layer, and comprises the following steps: (a) sealing areas excluding the end of one of the outer circumferential surfaces of the battery case by heat-fusing while the electrode assembly is mounted on the battery case; (b) injecting the electrolyte via the end that is unsealed and sealing the end by heat-fusing; (c) activating the battery cell by charging and discharging; (d) punching a through-hole, which communicates with the inside of the battery case on the unsealed portion, on the inside of the end; and (e) applying vacuum by pulling open in opposite directions the upper surface and the lower surface of the battery case at the unsealed portion, and removing gas, which is generated from the step of activating. and surplus electrolyte.