BUS BAR HAVING A NOVEL STRUCTURE, AND BATTERY MODULE INCLUDING SAME

摘要

The present invention relates to a bus bar for electrically connecting the electrode leads of battery cells or unit modules (unit cells) to each other through a coupling method using laser welding in a battery module, characterized in that each of said electrode leads and the bus bar has a plate structure, and a protrusion protruding in the direction in which the electrode leads are disposed is formed on a portion on which the electrode leads are welded such that the portion on which the electrode leads are welded by laser irradiation is closely attached to the electrode leads on said bus bar.