Abstract: A battery module includes a hermetically sealed battery cell assembly. The battery cell assembly includes a housing and an electrochemical cell disposed in the housing. The battery cell assembly also includes a first battery terminal coupled to and extending away from the electrochemical cell and extending through a first opening in the housing. The first opening in the housing comprises a flange. The battery cell assembly further includes a sealing ring disposed around the flange to exert a compressive force for hermetically sealing the opening.

Abstract: A current collector with improved flexibility and electrical conductivity includes at least one flexible leg coupled to a central portion of the current collector. The flexible leg extends substantially orthogonally to the central portion when a force is applied to the central portion. Specifically, the at least one flexible leg extends at least 16 percent of the outer width when a 1000 Newton loading is applied between the central portion and the outer portion.