Electromobile alternating current charging cable and preparation method

The invention discloses an electromobile alternating current charging cable and a preparation method. The cable comprises a sheath layer, an outer shielding layer, an insulating sheath and a pluralityof cable cores which are processed from outside to inside, the cable cores comprise inner insulating layers, inner shielding layers located in the inner sides of the inner insulating layers and conducting cores located in the inner sides of the inner shielding layers, and a plurality of conductors are twisted to form the conducting cores; clamping grooves with the quantity consistent with that ofthe cable cores are uniformly formed in the inner side surface of the insulating sheath at intervals, the end surfaces of the clamping grooves are in inverted trapezoidal shapes, elastic limit supporting bars are clamped in the clamping grooves, a cable core assembling limit area is formed between a cylindrical elastic bar and every two adjacent elastic limit supporting bars, and the cable coresare located in the cable co