Split self-unloading type miniaturized power van and using method

The invention relates to the technical field of electric power equipment, and mainly relates to a mode that a traditional power supply vehicle is decomposed into a power generation module vehicle and a winch module vehicle to be used in cooperation, the size of the whole vehicle is greatly reduced, the height of the whole vehicle is not larger than 2200 mm, the length of the whole vehicle is not larger than 6000 mm, and the width of the whole vehicle is not larger than 2000 mm. Auxiliary equipment such as a generator set and a winch of the power van are separately arranged in the two van bodies. The carriages of the power generation module vehicle and the winch module vehicle are specially transformed, so that the requirement for miniaturization size is met, the carriages can be quickly locked and separated from the chassis vehicle, and the carriages can be independently supported. The power supply vehicle has the advantages that miniaturization transformation of a traditional power supply vehicle is achieved