Busbar configured to restrict spreading of a corrosion inhibitor and battery module comprising the same

A busbar comprising:

• a joining surface to which a voltage detection line is to be joined;
• a position restriction part that is provided on at least a part of a periphery of the joining surface and configured to restrict spreading of a corrosion inhibitor that covers the joining surface;
• wherein the corrosion inhibitor is a liquid corrosion inhibitor in which a resin is dispersed in a solvent, and the corrosion inhibitor is subjected to a predetermined curing treatment to become a corrosion preventing layer;
• and
• the position restriction part is a recess recessed from the joining surface in a thickness direction of the busbar or a protrusion protruding from the joining surface in the thickness direction of the busbar.