| 摘要 |
PURPOSE: A stack and folding type secondary battery is provided to improve battery cycle property because of electrolyte is uniformly impregnated inside an electrode cell. CONSTITUTION: A stack and folding type secondary battery is manufactured by forming a wetting hole in an electrolyte injection part(1) formed in a separator(2) and injecting the electrolyte into a battery through the wetting hole during a folding step. The thickness of the separator is 10-30 micron. The length of the wetting hole is 10-30 mm, the width is 0.5-2 mm, and a gap between pores is more than 20 mm. |
