NOVELTY - The secondary battery has upper frame (500) and lower frames at both sides of the battery package. The upper and lower frames have tightening grooves for inserting the bottom end of side frames. The side frames has tightening grooves for inserting the thin plate-shaped seal at sidewall of battery case. The height of both the upper and lower end frames are same, and greater than the height of the side frame.    USE - For electric vehicle, hybrid electric vehicle, electric motorcycle and electric bicycle (all claimed).    ADVANTAGE - The mechanical rigidity of the battery pack is improved by fixing upper and lower frames at both sides of battery package. The electrical connection reliability is improved without bending the electrode terminals. The sealing property is improved. The assembly process is shortened and the size of the battery is reduced.    DETAILED DESCRIPTION - The side frame has a recess facing the side seal of the battery case. When the plate-shaped seal is inserted into the tightening groove of the side frame, a silicone is adhered to the recess. The side frame consists of high mechanical rigid core material and elastic raw material at the region where the thin-plate shaped seal contacts. The protrusion for coupling and groove are mutually formed in the upper and lower surface of upper and lower frame, so that the battery is stacked steadily. The upper frame has horizontal grooves (510) at the center, for inserting the anode (170) and cathode (180) in the upper end (120) of the battery case. The vertical grooves (520) are at the center of upper frame, for connecting the busbars (600,700) to the electrodes. The vertical plane (710) of the busbar (700) is inserted into the vertical groove from the lower side of the upper frame, and the horizontal surface (720) is accommodated in the center of the upper frame. The laser welding of the contact surface of the bus bar (700) is carried out to the cathode through an opening (530) in the upper frame. The protrusions (630) for voltage detection are formed at a side of the bus bar (600,700). The edge (640) of the cathode lead exposed to the side groove (540) of upper frame is cut off, for connecting the protrusion for voltage detection to predetermined circuit through the side groove.    An INDEPENDENT CLAIM is included for battery module.    DESCRIPTION OF DRAWING(S) - The figure shows a perspective view of the upper frame and busbar.    Upper end (120)    Anode (170)    Cathode (180)    Upper frame (500)    Horizontal grooves (510)    Vertical grooves (520)    Opening (530)    Side groove (540)    Busbars (600,700)    Protrusions (630)    Edge (640)    Vertical plane (710)    Horizontal surface (720)