High-voltage connecting cable provided with ultra-soft aluminum conductor and used in electric automobile and manufacturing method of high-voltage connecting cable

The invention belongs to the technical field of cables, and relates to a high-voltage connecting cable provided with an ultra-soft aluminum conductor and used in an electric automobile. The high-voltage connecting cable comprises the conductor, a wrapping belt wrapping the conductor, and an insulation layer wrapping the wrapping belt. The high-voltage connecting cable is characterized in that the conductor is formed by twisting fifth-type soft aluminum wires which are processed through annealing, the diameter of the fifth-type soft aluminum wires ranges from 0.10 mm to 0.45 mm, the cross sectional area of the conductor ranges from 1.5 mm to 120 mm , and the insulation layer is made of 120-DEG C environmentally-friendly inflaming retarding thermoplastic elastomer (TPE) or 125-DEG C environmentally-friendly inflaming retarding irradiation cross-linked polyolefin; the rated operational voltage of the cable is 1500 volts, the long-time working temperature of the cable is lower than or equal to 125 DEG C, the environment temperature is higher than or equal to -40 DEG C when the cable is laid, the continuous working time of the cable under the temperature of 175 DEG C is longer than or equal to 6 hours, and the minimum bend radius is five times of the external diameter of the cable. The high-voltage connecting cable has the main advantages that the cable is softer, more bendable, lighter, lower in cost, more resistant to high voltage, capable of allowing large current to pass, better in flame-retardant effect, and safer in use.