SECONDARY BATTERY WITH AUTOMATIC ELECTROLYTE SUPPLEMENTING FUNCTION

摘要

PURPOSE: A secondary battery is provided to improve lifetime and performance and to reduce time and costs for filling the battery with electrolyte. CONSTITUTION: A secondary battery(100) comprises an electrode assembly(112) filled with liquid electrolyte and a pouch type main pocket(110); a pouch type sub pocket which is attached to one side of the exterior of the main pocket and filled with liquid electrolyte for filling; a liquid electrolyte-transferring part(130) providing a channel to the main pocket, for the liquid electrolyte for filling; and pack case which accommodates a unit set consisting of the main pocket, sub pocket, and a liquid electrolyte-transferring part and has an inner wall attached to the outer side of the sub pocket.