Electric propulsion system for ship

The utility model discloses an electric propulsion system for a ship. The electric propulsion system comprises a charging unit, a power battery, an electric energy conversion unit and a propulsion motor which are sequentially connected with one another. The system also comprises a battery management system and a propulsion monitoring system. The battery management system is connected with the charging unit and the power battery respectively. The propulsion monitoring system is connected with the electric energy conversion unit and the propulsion motor respectively. The electric propulsion system for the ship adopts the battery as power, so as to fundamentally eliminate the environmental pollution caused by waste gas emitted by an internal-combustion engine and ensure quiet running and no noise pollution. The electric energy on the whole ship is uniformly distributed and managed, the brake feedback energy of a propeller is utilized fully, and the utilization rate of the electric energy is improved.