Semi-automatic electric vehicle battery rapid replacement system and operation method thereof

The invention discloses a semi-automatic electric vehicle battery rapid replacement system which comprises a plurality of battery replacement boxes and a battery chamber, the battery chamber is divided into a plurality of cavities, and each cavity corresponds to one battery replacement box; a plurality of charging assemblies are arranged in the upper layer of the battery replacement box; the lower layer of the battery replacement box comprises a battery conveying belt, a plurality of battery packs and a toothed shaft; the output port and the input port of each battery conveying belt are in one-to-one correspondence with the output port and the input port of the battery chamber; a plurality of direction turntables are further arranged on the battery conveying belt close to the output port and drive the battery packs to move into the battery chamber along the battery conveying belt; a guide positioning groove and a guide positioning bump are respectively arranged at the bottom of each battery pack and the botto