Electric propulsion power supply system used for pleasure boat

The utility model discloses an electric propulsion power supply system used for a pleasure boat. The electric propulsion power supply system used for the pleasure boat includes a diesel generating set, a battery pack and a DC bus. The diesel generating set is connected with the DC bus through a rectifier. The battery pack is connected with the DC bus after being boosted through a battery pack booster. A battery pack charger connected with a shore power supply is connected to the battery pack in parallel. An inverting power source used for providing three-phase alternating current for daily load of the pleasure boat and a propulsion motor connected with a propulsion frequency converter are connected to the DC bus in parallel respectively. According to the utility model, the diesel generating set and the battery pack are installed on the same pleasure boat, so that advantages of the diesel generating set and the battery pack are performed at the same time. Switching of the diesel generating set and the battery pack without power interruption is realized according to requirements for navigational speeds, so that the diesel generating set and the battery pack are utilized effectively for supplying power for different operation working conditions of the pleasure boat. Therefore, the pleasure boat has characteristics that the pleasure boat is mute, environment-friendly and energy-saving. Riding comfort of the pleasure boat in a tour working condition is guaranteed. Fuel consumption is lowered. And operation cost is reduced.