BUSBAR MODULE

A busbar module (1) includes: busbars (2) that are fixed to battery cells of a battery module; a plate-like flexible circuit body (3) that includes conductors (6) corresponding to the busbars; and a case (4) that accommodates the circuit body and the busbars, in which the circuit body includes a trunk portion and a branch portion (31) connected to the busbar, the branch portion includes a base layer (10), a metal foil that is the connection conductor (6), and a coating layer that covers the base layer and the metal foil, the branch portion has a facing portion (39) faces a first surface (21a) of the busbar, the metal foil is connected to a connection target at a portion that is more adjacent to a distal end than the facing portion is, and the first surface has a groove-shaped recess (22) provided at a portion facing the metal foil.