The invention discloses a main wiring
system of an electric automobile
charging station system. The main wiring
system comprises a three-phase
transformer, an alternating-current
bus, a
rectifier, a direct-current
bus, a direct-current charging
pile and an electric automobile. After
voltage reducing and isolating are conducted on a
charging station alternating-current inlet wire through the three-phase
transformer, the
charging station alternating-current inlet wire is connected with the charging
station alternating-current
bus which is connected with the
rectifier, after rectification is conducted on the alternating-current bus through the
rectifier, the alternating-current bus is connected into a charging
station direct-current bus, the direct-current charging
pile is connected with the direct-current bus, the direct-current charging
pile is connected with the electric automobile, and
electric energy is provided for the electric automobile. Due to the power supply structure that the rectifier is connected in a distributed mode, direct-current bus power supply is adopted, and a large-power direct-current
solid-state switch is adopted, on the basis that the technological difficulty and the cost of the rectifier are not increased, the conflict between the equipment
utilization rate and large-current charging is removed, and a solution is provided for
fast charging.