The invention discloses a conveniently-assembled battery compartment, which comprises angular upright posts and beams, wherein the angular upright posts and the beams are positioned on two sides and are connected through longitudinal beams; a plurality of middle upright posts and middle beams are arranged on the longitudinal beams; the angular upright posts, the beams and the longitudinal beams are connected through angular pressure plates; the middle upright posts and the middle beams are connected to the longitudinal beams through straight pressure plates; the angular pressure plates and the straight pressure plates are provided with screw holes so as to be fixed by arranging bolts respectively; housing plates are arranged around the whole compartment frame; the angular upright posts, the middle upright posts, the beams and the longitudinal beams are connected by pins, insertion holes, the pressure plates and the bolts to realize fast assembly; and N middle upright posts can be assembled according to required lengths so as to satisfy the needs of the battery compartment in different lengths. The invention provides the battery compartment, which is conveniently assembled by using the pins, the insertion holes, the angular pressure plates, the straight pressure plates and the bolts, and has the characteristics of simple and small structure, convenient and easy machining and assembly, attractive appearance and low cost.