Multifunctional charging mother-son square cabin

The invention provides a multifunctional charging sub-mother square cabin. The multifunctional charging sub-mother square cabin comprises a mother unit square cabin and a plurality of sub-unit energy storage cabins, the mother unit square cabin comprises a mother cabin main body, a son cabin storage rack and a power generation device. The sub-cabin storage rack is provided with a limiting charging device, and the plurality of sub-unit energy storage cabins are installed on the sub-cabin storage rack through the limiting charging device. The limiting charging device comprises a base, a main sleeve body, a lining block, a deflection handle piece and an elastic band, the main sleeve body is arranged on the base in a sliding mode, the deflection handle piece is rotationally arranged on the main sleeve body, the elastic band is bound to the deflection handle piece, the lining block is contained in the main sleeve body in a sliding mode, an air storage chamber is formed between the lining block and the main sleeve