Quick-changing lithium battery box assembly used for new energy automobile

The invention relates to a quick-changing lithium battery box assembly used for a new energy automobile. The quick-changing lithium battery box assembly comprises a mounting box body, a lithium battery, and a battery management system, wherein the lithium battery and the battery management system are both fixedly arranged in the mounting box body; the mounting box body is movably connected with a base, and can slide freely relative to the base; a top cover fixing cover is arranged at the upper part of the mounting box body; a battery box base can freely slide relative to the base through a roller group. Through the adoption of the quick-changing lithium battery box assembly, and a maintenance cover on the surface of the mounting box body, the battery management system inside a detector can be more convenient; ventilation and cooling of the mounting box body are realized through an air outlet and an air inlet, as well as an aspirator which can be started according to the actual temperature of the battery; the lithium battery can be arranged into one layer or two layers according to actual requirement; the size of the mounting box body can be designed according to actual requirement; the battery box assembly can be replaced quickly, and the quick-changing effect can be achieved by the roller group arranged on the base surface.