Assembled battery pack shell

The utility model relates to the technical field of batteries, in particular to an assembled battery pack shell which comprises a bottom shell, and the bottom shell is provided with a cavity for accommodating a battery module; partition plates are arranged in the cavity and divide the cavity into a plurality of sub-cavities, and the partition plates are detachably connected with the side wall of the bottom shell. The assembled battery pack shell disclosed by the utility model is formed by assembling the bottom shell and the partition plate, and is simple in structure and convenient to assemble; meanwhile, the partition plate can improve the overall strength of the bottom shell and reduce the possibility of deformation of the bottom shell; and moreover, the partition plate also has fireproof and flame-retardant effects, can prevent flame spread of the battery, can effectively isolate heat and avoid influence on other batteries due to overheating of a certain battery, has certain elasticity, can buffer and abso