Battery pack having flexible circuit connector

摘要

A battery pack (10) containing a plurality of battery modules (12), said modules (12) comprising a plurality of individual battery units (20), said battery units (20) comprising a plurality of bicells (78) with opposing terminals (22, 24). The battery modules (12) are connected in series by use of a flexible circuit (14) and by opposing positive (22) and negative (24) terminals of each battery unit (20). The terminals of each battery unit (20) contain a region of apertures (99) which allow the adhesive (83) of the packaging material to seal more effectively, thereby eliminating or reducing the amount of leakage from an individual battery unit (20).