Secondary battery

Abstract

The present disclosure relates to a secondary battery capable of additionally supplementing an electrolyte, and at least one problem to be solved is to provide a secondary battery capable of additionally supplementing the electrolyte. To this end, provided is a secondary battery comprising: an electrode assembly including a first electrode plate, a second electrode plate, and a separator; a case accommodating the electrode assembly; a cap plate sealing an upper opening of the case and having an injection hole that is a supply passage for electrolyte; and a safety valve installed on the cap plate, sealing the injection hole by a magnetic force and moving by external force to open the injection hole.

Dependencies are inferred from the claim text.