Pouch type battery cell and manufacturing method thereof

Abstract

A method of manufacturing a pouch-type battery cell comprises preparing an electrode assembly including a positive electrode plate, a separation film, and a negative electrode plate, preparing an electrode lead of clad metal to be welded to each of a positive electrode tab formed on the positive electrode plate and a negative electrode tab formed on the negative electrode plate, laser-welding an end of a positive electrode lead of clad metal to the positive electrode tab, laser-welding an end of a negative electrode lead of clad metal to the negative electrode tab, attaching a sealing film to each of the positive electrode lead and the negative electrode lead, packing the electrode assembly in a pouch case after the sealing film is attached, injecting an electrolyte into an inside of the electrode assembly-packed pouch case, and sealing the electrolyte-injected pouch case.

Dependencies are inferred from the claim text.