BATTERY MODULE AND FRAME STRUCTURE THEREOF

A frame structure of a battery module, comprising a frame (10), a lower sheath (22), and an upper sheath (25), wherein the frame (10) comprises two oppositely-provided side frames (11) and connecting plates (12) respectively provided at two ends of the side frames (11) and used for connecting the two side frames (11); each side frame (11) comprises a frame plate (11a), a frame edge extending towards the same side from the edge of the frame plate (11a), and a pressing rivet stud (13) provided on the frame edge; the connecting plate (12) comprises a plate body (12a), plate edges (12b) extending towards the same side from the two opposite side edges of the plate body (12a), and first through holes (12d) provided in the plate body (12a) and corresponding to the pressing rivet studs (13); the lower sheath (22) is provided at the bottom of the frame (10) and is supported by the frame edge at the lower portion of the side frame (11); the lower sheath (22) is used for supporting and fixing a battery cell (24), and is