Apparatus and method for manufacturing secondary battery

Abstract

An apparatus for manufacturing a secondary battery, the apparatus including a first liquid injector for firstly injecting an electrolyte into an interior of a cell assembly including a cap assembly and a battery can, which are mutually connected, the battery can accommodating an electrode assembly therein, a charger configured to charge the cell assembly after firstly injecting the electrolyte is completed, a loss amount determination part configured to determine a change in weight of the cell assembly before and after charging and determine, resulting in a determination result, a loss amount of the electrolyte according to the charging based on the determination result, and a supplementary liquid injection unit configured to supplement the electrolyte as much as the loss amount to the cell assembly.

Dependencies are inferred from the claim text.