INTER-MODULE BUSBAR

The present invention relates to an inter-module busbar, and particularly, the present invention provides a secondary battery including: a conductive unit that electrically connects a plurality of objects to each other; a first insulation layer that surrounds the conductive unit; and a second insulation layer that surrounds the first insulation layer, wherein a discharge line, which communicates with the outside and is provided to discharge a gas, is defined in the first insulation layer.