Fabricating method of secondary battery

摘要

A fabrication method of a secondary battery having excellent electrolyte impregnating characteristics and excellent productivity without fracture of an electrode plate or separation of an active material is disclosed. The fabrication method includes providing a plurality of first electrode plates and second electrode plates and two separators, attaching the plurality of first electrode plates to portions between the two separators, attaching the plurality of second electrode plates to one of the two separators, winding the separators having the plurality of first and second electrode plates to form a wound electrode assembly, removing curved portions of the outermost separators positioned at exterior sides of the first and second electrode plates to form a stacked electrode assembly and accommodating the stacked electrode assembly in a sheath member.

主权项

1. A method of manufacturing a secondary battery, comprising:
preparing two separators, a first electrode plate arrangement and a second electrode plate arrangement; producing a first arrangement by interposing the first electrode plate arrangement between the two separators; producing a second arrangement by attaching the second electrode plate arrangement to an external side of one of the two separators of the first arrangement; winding the second arrangement; forming a single cell tab for each of the first and second electrode plate arrangements by welding a plurality of electrode tabs together; producing an electrode assembly stack by removing curved portions from sides of the wound second arrangement; preparing a case; placing the electrode assembly stack into the case; injecting electrolyte into the case; and sealing the case.