The BJT series reel-powered electric flat car has a cable reel on the electric flat car, and the cable reel is hysteresis coupled to ensure that the cable is evenly stressed and not easily pulled. The cable drum 380V power supply provides power to the motor for lifting metallurgy on the flat car, and the motor drives the flat car to run. When the electric flat car is running, the cable reel automatically rolls up or releases the cable, which is affected by the length of the reel. Generally, the maximum running distance is less than 200m. The flat car is suitable for lifting metallurgy in harsh working conditions, the flat car structure is simple and reliable, the price is economical, and the track construction is convenient.