SECONDARY BATTERY CAPABLE OF RE-INJECTING ELECTROLYTE

摘要

PURPOSE: A secondary battery is provided to extend lifetime of the secondary battery by introducing an electrolyte supplementary member and to prevent sealing characteristics degradation of a pouch case. CONSTITUTION: A secondary battery(10) comprises a cell assembly(20) in which electrode leads(11,12) of opposite polarity are attached, an electrolyte supplement tube(30) which one end is sealed up, and a pouch case(40) which seals the electrolyte supplement tube and cell assembly in order for a part of the electrode lead and sealing region of the electrolyte supplement tube to be exposed to outside through heat sealing of edges. Electrolyte gush openings are formed along to the longitudinal direction of the electrolyte supplement tube. The electrolyte supplement tube is arranged to face with side part of the cell assembly which is not combined with the electrode lead.