Low-floor pure electric bus

The invention discloses a low-floor pure electric bus, and relates to the technical field of automobiles. The low-floor pure electric bus comprises an underframe, a top cover and a plurality of firstbattery packs, the underframe is of a truss structure formed by splicing a plurality of steel pipes, and a plurality of mounting cabins are arranged in the middle section of the underframe; and each first battery pack comprises a plurality of short battery cell single bodies which are connected in series and in parallel, and the first battery packs are detachably mounted in the mounting cabins. The height of battery compartments is fully compressed by adopting short battery cell monomers in a breakthrough manner, so the ground clearance of the underframe is effectively controlled, one-step stepping can be achieved, the underframe is flat and free of steps, the design of a front-to-back horizontal all-low floor in the bus is achieved, the safety and control stability of the whole bus are improved, and urban bus ope