High-voltage power distribution system for electric automobiles

The utility model provides a high-voltage power distribution system for electric automobiles, which comprises a main contactor, an attachment contactor, a charging contactor, a current fuse and a negative electrode sharing end. The current fuse comprises an attachment current fuse and a main-path current fuse, and the number of the attachment current fuse equals to that of vehicle-mounted electrical equipment. The main contactor is controlled by precharged feedback signals of a motor controller, only after the main contactor is pulled in, a power battery pack can supply power for the motor controller. A precharged contactor is controlled by an automobile key, after the precharged contactor is pulled in, the power battery pack conducts precharge on the motor controller and supplies power for the vehicle-mounted electrical equipment. A charger contactor is controller by a charger with 24 volts, only after the charger contactor is pulled in, the charger can charge for the power battery pack. Pull-in coils of the main contactor and the precharged contactor are respectively in series connection with two pairs of normally closed contacts of the charger contactor, and a logical relation exists among the main contactor, the precharged contactor and the charger contactor, namely, when the charger contactor works, the main contactor and the precharged contactor do not work.