ELECTROLYTE REINJECTION METHOD AND ELECTROLYTE- REINJECTABLE SECONDARY BATTERY

The present invention relates to a method for reinjecting an electrolyte, and a secondary battery capable of being reinjected with an electrolyte. The method for reinjecting an electrolyte according to the present invention is a method for reinjecting an electrolyte into a secondary battery in which an electrode assembly and an electrolyte are accommodated in a pouch. The pouch comprises an aluminium sheet, in which a functional hole is formed, and a polymer layer stacked on the aluminium sheet. The method comprises a reinjection process of injecting an additional electrolyte into the pouch through the functional hole by opening the functional hole, and a sealing process of sealing the functional hole after the reinjection process.