| 摘要 |
A method for preparing a pouch type secondary battery, a secondary battery prepared by the method, and a middle or large-size battery pack containing the secondary battery as a unit cell are provided to improve the sealing property of a sealing part by a simple assembling process. A method for preparing a pouch type secondary battery comprises the steps of firstly sealing the rest part(114, 116) except a certain part(118) in the state that an electrode assembly comprising a positive electrode, a separator and a negative electrode is mounted in an accommodation part(110); injecting an electrolyte solution through the part(118); and interposing a thermal bonding film(300) on the part(118) and secondly sealing it. |
