DEVICE AND METHOD FOR MANUFACTURING SECONDARY BATTERY

A device for manufacturing a secondary battery according to the present invention includes: a pair of sealing blocks that are disposed at both sides, respectively, of a sealing part of a pouch from which an electrode lead is drawn out, and compress and seal the sealing part at a seal temperature and pressure; and a preheating member that preheats each of the sealing part of the pouch and the pair of sealing blocks to a preheat temperature, wherein the preheating member includes a first heating body that preheats to the preheat temperature a surface of the sealing part, on which each of the pair of sealing blocks is disposed, and a second heating body that preheats to the preheat temperature a surface of each of the pair of sealing blocks, which faces the sealing part.