FPCB Assembly for Battery Module, Its Manufacturing Method, and Battery Module Including the Same

A flexible printed circuit board (FPCB) assembly for a battery module includes a insulated flexible film and conductor patterns arranged inside the film in a predetermined form, and the conductor patterns transmit an electric signal. The FPCB assembly includes a main FPCB configured to extend in one direction; and a sub FPCB assembled to at least one side of the main FPCB and configured to extend in a direction different from the main FPCB.