Rechargeable battery module

Abstract

A rechargeable battery module is disclosed. The rechargeable battery module includes a busbar holder covering a plurality of battery cells, a busbar disposed on the busbar holder to electrically connect the battery cells, and a flexible printed circuit (FPC) attached to the busbar to send a signal and to detect a current from the busbar, wherein the flexible printed circuit includes a thin copper film attached between the inner surfaces of a pair of cover layers, wherein the thin copper film is exposed in unit thin film portions through a plurality of openings formed in the pair of cover layers, the thin copper film and the pair of cover layers are bent, and the unit thin film portions are formed in multiple layers and welded to the busbar.

Dependencies are inferred from the claim text.