Extruded Shell, Battery Pack, and Method for Assembling Battery Pack

The embodiments of the present disclosure provide an extruded shell, a battery pack, and a method for assembling a battery pack. The extruded shell comprises a bottom plate, a T-shaped plate, and two side plates. Both side plates are connected to the bottom plate. At least one side plate extends to form a top-limiting edge. The T-shaped plate is connected to the bottom plate, and multiple single battery cells are configured to be mounted between the T-shaped plate and the side plates. The bottom plate, side plates, top-limiting edge, and T-shaped plate are integrally extruded and molded.