The invention relates to a battery changing structure. A battery quick-changing structure of a pure electric vehicle comprises a battery cabin shell; a battery accommodating cavity is formed in the battery cabin shell; one end of the battery accommodating cavity is provided with a battery pack inlet; a battery pack locking mechanism is arranged at the battery pack inlet; a battery pack guide positioning mechanism is arranged on at least one of the two sides of the battery pack inlet of the battery accommodating cavity; a battery pack supporting mechanism is arranged at the bottom of the battery accommodating cavity; and a battery pack fastened connection mechanism is arranged at the other end of the battery accommodating cavity. The invention provides the battery quick-changing structure of the pure electric vehicle, which is simple in structure, and can realize rapid changing and mounting of a battery and rapid locking and fixation. The technical problems that in the prior art, the new energy electric vehicle is long in charging time and inconvenient in battery changing are solved.