BATTERY PACK AND MANUFACTURING METHOD THEREFOR

摘要

Disclosed is a battery pack that can: improve assembly efficiency, process efficiency, and productivity; reduce a manufacturing cost; and enhance the sealing efficiency and durability of a pack case. A battery pack, according to an aspect of the present invention, comprises: a cell assembly that includes a plurality of secondary batteries and a plurality of cartridges that are capable of being stacked on each other and surround the outer peripheral portions of the secondary batteries from the outside to receive the secondary batteries therein; a lower housing that has an empty space therein and is open at the top thereof, the cell assembly being received in the internal space of the lower housing; a lower end plate formed of a plate-shaped metal material and disposed to make surface-to-surface contact with the lower surface of the lower housing; and a lower cover located below the lower end plate to cover the lower end plate and fixedly coupled with the lower housing.