Electric ship in battery changing mode and hybrid power system thereof

Abstract

The utility model provides an electric ship in a battery changing mode and a hybrid power system of the electric ship, and relates to the technical field of ship battery changing, and the ship comprises a ship body, a container type battery and a container type power generation device; a deck of the ship body is provided with a plurality of battery replacing box positions, including battery replacing box positions and universal battery replacing box positions; the battery replacing box position is used for installing a container type battery or a common container; the universal battery replacement box position is used for installing a container type battery or a container type power generation device or installing a common container; the container type battery is mounted on the battery changing box position and is used for supplying power to the ship body; the container type power generation device is installed on the universal battery replacement box position and used for supplying power to the ship body and charging a container type battery. The container type power generation device is a container type alternating current power generation device or a container type direct current power generation device. Power modes can be flexibly switched according to requirements, the ship body, the container type battery and the container type power generation device are all produced in a standardized mode, and the ship building cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship battery swap technical field especially to a kind of electric ship of battery swap mode and its hybrid power system. BACKGROUND

[0002] At present, inland river ships are mostly driven by fuel power, which has certain pollution problems. As the main source of domestic water, the environmental protection problem of inland rivers has been paid great attention to, so the new energy ship driven by electricity has begun to be gradually popularized in waterway transportation operation with its environmental protection advantage. However, the existing electric ship, although having good environmental protection effect, generally has problems in endurance. In order to meet the endurance requirement, there are mainly two solutions: one is to increase the battery capacity; the other is to adopt hybrid range extension scheme.

[0003] The existing electric ship mainly has three modes, namely charging mode, battery swap mode and hybrid range extension mode. The battery pack of the electric ship in charging mode is usually fixedly installed in the cabin, and needs to be charged when the battery power is insufficient. However, the electric ship in charging mode generally has problems such as difficulty in docking, slow charging speed, and few charging piles on the shore. The battery of the electric ship in battery swap mode usually adopts container type battery, which is installed on the box of the electric ship. When the battery power is insufficient, the container type battery full of electricity is replaced by hoisting, without the need to dock for charging and with fast battery swap speed. However, the electric ship in battery swap mode needs to be equipped with a large number of container type batteries, and the one-time investment cost for the batteries is very high. The electric ship in hybrid range extension mode increases generator set on the basis of the above two modes of electric ship, which can supplement the electric ship with electric energy by burning liquid fuel, solving the problem of supplementing electric energy by docking for charging or replacing battery. Since the energy density of liquid fuel is high, the electric ship in hybrid range extension mode can reduce the battery capacity, while also increasing the endurance. However, the operating cost of the electric ship in hybrid range extension mode is higher than that of the above two ships.

[0004] The endurance mileage of the electric ship in the charging mode or the battery replacement mode is usually short, is suitable for performing a task with a short navigation mileage, no need or only one or two times of shore charging or battery replacement, and has low investment and operation cost; is not suitable for performing a task with a long navigation mileage, a plurality of times of shore charging or battery replacement, and has high investment and operation cost. The electric ship in the hybrid extended range mode has usually long endurance mileage, but has high investment and operation cost, and is thus suitable for performing a task with a long navigation mileage, and is not suitable for performing a task with a short navigation mileage. However, a ship owner usually needs to navigate different routes with different navigation mileages according to the business demand in normal operation, and the electric ship docks in the above three modes cannot meet the endurance mileage requirement and have low investment and operation cost at the same time. Meanwhile, the existing electric ship dock cannot flexibly switch the power mode. Utility model content

[0005] The utility model discloses a kind of electric ships of battery replacement mode and hybrid power system thereof, to solve at least one above technical problem existing in prior art.

[0006] First, to solve the above technical problems, the utility model provides a kind of electric ships of battery replacement mode, comprising: ship body, container battery and container power generation device;

[0007] The deck of the ship body is provided with a plurality of battery replacement box positions, including battery replacement box position and general battery replacement box position;

[0008] The battery replacement box position is used to install the container battery or ordinary container;

[0009] The general battery replacement box position is used to install the container battery or the container power generation device, or install ordinary container;

[0010] The container battery is detachably installed on the battery replacement box position, for the power supply of the ship body;

[0011] The container power generation device is detachably installed on the general battery replacement box position, for the power supply of the ship body and the charging of the container battery;

[0012] In use, according to endurance mileage requirement, the container battery and the container power generation device are installed;

[0013] When short-distance navigation, according to endurance mileage requirement, the required number of container batteries is installed on the required number of battery replacement box positions by hoisting, and the power output mode of the electric ship of battery replacement mode is pure electric mode, and the container battery is used to supply power to the ship body, and ordinary container can be installed on the remaining battery replacement box positions to increase loading space;

[0014] In the medium-distance navigation, the required number of the container-type batteries is installed on the battery replacement bays by hoisting according to the endurance mileage requirement, the remaining container-type batteries are installed on the general battery replacement bays after the battery replacement bays are filled, the power output mode of the electric ship in the battery replacement mode is pure electric mode, the container-type batteries supply power to the ship body, and the remaining battery replacement bays can be used to increase the loading space by installing ordinary containers.

[0015] In the long-distance navigation, the container-type batteries are installed on the battery replacement bays by hoisting according to the endurance mileage requirement, the container-type power generation devices are installed on the general battery replacement bays by hoisting, the power output mode of the electric ship in the battery replacement mode is hybrid extended range mode, and the mixed power system composed of the container-type batteries and the container-type power generation devices supplies power to the ship body.

[0016] The application can install or unload the required number of container-type batteries and container-type power generation devices on the battery replacement bays on the deck of the ship body by hoisting according to the endurance mileage requirement, realizes flexible switching of the power mode, the ship body, the container-type batteries and the container-type power generation devices are produced in a standardized manner, the complexity of ship design is reduced, and the shipbuilding cost is reduced.

[0017] Further, the cabin of the ship body is provided with a power distribution box and a propulsion motor.

[0018] The power distribution box is electrically connected with the container-type batteries, the container-type power generation devices, the propulsion motor and the power load of the ship body, and is used for power distribution of the electric ship in the battery replacement mode.

[0019] The propulsion motor is used to drive the ship body to navigate.

[0020] Preferably, the cabin of the ship body is further provided with a propulsion motor controller for controlling the operation of the propulsion motor.

[0021] Further, the box body of the container-type battery is provided with a battery positive electrode interface and a battery negative electrode interface.

[0022] The side of the battery replacement box is provided with a direct current pile, the positive direct current cable and the negative direct current cable of the power distribution box are led out through the direct current pile, and the leading ends of the positive direct current cable and the negative direct current cable are respectively provided with a positive direct current plug and a negative direct current plug, which are used for plugging with the battery positive pole interface and the battery negative pole interface respectively through the positive direct current plug and the negative direct current plug, so that the power distribution box is electrically connected with the container type battery.

[0023] Optionally, the container type power generation device is a container type alternating current power generation device.

[0024] Of course, the container type power generation device can also be a container type direct current power generation device.

[0025] Preferably, the box body of the container type alternating current power generation device is provided with a three-phase alternating current output interface and a first three-phase alternating current input interface.

[0026] The other side of the universal battery replacement box is provided with an alternating current pile, the three-phase alternating current input cable and the three-phase alternating current output cable of the power distribution box are led out through the alternating current pile, and the leading ends of the three-phase alternating current input cable and the three-phase alternating current output cable are respectively provided with a three-phase alternating current input plug and a three-phase alternating current output plug, which are used for plugging with the three-phase alternating current output interface and the first three-phase alternating current input interface respectively through the three-phase alternating current input plug and the three-phase alternating current output plug, so that the power distribution box is electrically connected with the container type alternating current power generation device.

[0027] Preferably, the box body of the container type direct current power generation device is provided with a positive direct current interface and a negative direct current interface on one side, and a second three-phase alternating current input interface on the other side, which are used for plugging with the positive direct current plug and the negative direct current plug respectively through the positive direct current plug and the negative direct current plug, and the three-phase alternating current output plug is plugged with the second three-phase alternating current input interface, so that the power distribution box is electrically connected with the container type direct current power generation device.

[0028] Further, the power distribution box comprises a first alternating current power distribution box, a direct current power distribution box and a second alternating current power distribution box.

[0029] The first alternating current power distribution box, the direct current power distribution box and the second alternating current power distribution box are electrically connected in sequence.

[0030] The propulsion motor is electrically connected with the direct current power distribution box.

[0031] The positive direct current cable and the negative direct current cable are led out from the direct current power distribution box.

[0032] The three-phase alternating current input cable is led out from the first alternating current power distribution box.

[0033] The three-phase alternating current output cable is led out from the second alternating current distribution box.

[0034] Further, the ship body is provided with an energy management system (EMS system) for information interaction and linkage control of the ship body, the container battery, the container generator, the propulsion motor and the power consumption load of the ship body.

[0035] Further, the container battery is provided with a battery management system and a high-voltage distribution box in the box body of the container battery.

[0036] The battery management system is used for controlling the operation of the container battery.

[0037] The high-voltage distribution box is electrically connected with a battery positive electrode interface and a battery negative electrode interface, and is used for power distribution of the container battery.

[0038] Further, the container battery is further provided with a battery display screen and a battery communication interface on the box body of the container battery.

[0039] The battery display screen is electrically connected with the battery management system, and is used for displaying basic information and working status of the container battery, and manually controlling the operation of the container battery.

[0040] The battery communication interface is electrically connected with the battery management system.

[0041] The first RS485 bus of the energy management system is led out through the direct current charging pile or the alternating current charging pile, and a communication plug is arranged at a leading end of the first RS485 bus, so as to plug the communication plug with the battery communication interface, thereby electrically connecting the energy management system with the battery management system of the container battery.

[0042] Preferably, the box body of the container battery is usually further provided with a ventilation system, a fire detection system, a comprehensive alarm display system and the like.

[0043] Further, the box body of the container generator is provided with a fuel tank, a fuel supply system, a generator set, a generator distribution board and a generator controller.

[0044] The fuel tank, the fuel supply system and the generator set are sequentially connected; the fuel tank is used for storing fuel of the generator set; the fuel supply system is used for delivering fuel; and the generator set is used for generating electricity.

[0045] The generator distribution board is electrically connected with the generator set and the load in the container generator, and is used for power distribution of the container generator.

[0046] The power generation device controller is used to control the operation of the containerized power generation device;

[0047] The power generation device controller generally adopts a programmable logic controller (PLC), and the fuel supply system, the generator set and the power distribution board of the power generation device are controlled in a linked manner by the programmable logic controller.

[0048] Preferably, the generator set of the containerized AC power generation device is an AC generator set;

[0049] The power distribution board of the containerized AC power generation device is a third AC power distribution board, which is electrically connected to the AC generator set and the load in the containerized AC power generation device and is used for distributing electric energy to the containerized AC power generation device;

[0050] The third AC distribution board is electrically connected to the three-phase AC output interface and the first three-phase AC input interface.

[0051] Preferably, the generator set of the containerized DC power generation device is a DC generator set;

[0052] The generator distribution board of the containerized DC generator device includes a third DC distribution board and a fourth AC distribution board. The third DC distribution board is electrically connected to the DC generator set and the DC load in the containerized DC generator device. The fourth AC distribution board is electrically connected to the AC load in the containerized DC generator device and is used for distributing electric energy to the containerized DC generator device.

[0053] The third DC distribution board is electrically connected to the positive DC interface and the negative DC interface;

[0054] The fourth AC distribution board is electrically connected to the second three-phase AC input interface.

[0055] Furthermore, the container-type power generation device is also provided with a power generation device display screen and a power generation device communication interface on the box body;

[0056] The power generation device display screen is electrically connected to the power generation device controller and is used to display basic information and working status of the containerized power generation device and manually control the operation of the containerized power generation device;

[0057] The power generation device communication interface is electrically connected to the power generation device controller;

[0058] The first RS485 bus is plugged into the communication interface of the power generation device through the communication plug, so that the power management system is electrically connected to the power generation device controller of the containerized power generation device.

[0059] Further, the tail of the ship body is provided with a propeller, which is electrically connected with the propulsion motor, for driving the propeller to rotate by the propulsion motor, and driving the ship body to sail by the propelling force of the propeller.

[0060] Further, the deck of the ship body is further provided with a common box position for installing a common container.

[0061] In the second aspect, based on the same utility model concept, the utility model also provides a hybrid power system of the electric ship in the battery replacement mode, which comprises the container type battery, the container type power generation device, the first AC power distribution board, the DC power distribution board, the second AC power distribution board and two propulsion motors.

[0062] The container type power generation device is a container type AC power generation device or a container type DC power generation device.

[0063] The third AC power distribution board of the container type AC power generation device is provided with an AC400V three-phase AC bus, an AC220V single-phase AC bus, an isolation transformer T4 and an isolation transformer T5.

[0064] The AC400V three-phase AC bus leads out a first branch line and is electrically connected with three phase lines of the AC generator set G of the container type AC power generation device through a circuit breaker K21.

[0065] The AC400V three-phase AC bus leads out a second branch line and is electrically connected with a three-phase AC output interface of the container type AC power generation device through a circuit breaker K28, for the electric energy output of the AC generator set G.

[0066] The AC400V three-phase AC bus leads out a third branch line and is electrically connected with an output end of the isolation transformer T5 through a circuit breaker K22, and an input end of the isolation transformer T5 is electrically connected with a first three-phase AC input interface of the container type AC power generation device, for supplying power to loads in the container type AC power generation device.

[0067] The AC400V three-phase AC bus leads out a fourth branch line and is electrically connected with an input end of the isolation transformer T4 through a circuit breaker K24, and an output end of the isolation transformer T4 is electrically connected with the AC220V single-phase AC bus through a circuit breaker K25.

[0068] The AC400V three-phase AC bus and the AC220V single-phase AC bus are used for supplying power to loads in the container type AC power generation device.

[0069] The first AC distribution board, the DC distribution board and the second AC distribution board are arranged in distribution boxes of the ship body.

[0070] The two propulsion motors are a left propulsion motor M1 and a right propulsion motor M2.

[0071] Preferably, the first AC distribution board, the DC distribution board and the second AC distribution board are arranged in the first AC distribution box, the DC distribution box and the second AC distribution box respectively.

[0072] Further, the first AC distribution board is provided with an AC400V_IN AC bus and a plurality of AFE inverters.

[0073] The AC400V_IN AC bus leads out a plurality of input branches, the input branches are electrically connected with the first three-phase AC output interface through first circuit breakers, and a plurality of container-type AC power generation devices are connected in parallel on the AC400V_IN AC bus.

[0074] The AC400V_IN AC bus also leads out a plurality of output branches, the output branches are electrically connected with the input ends of the AFE inverters through second circuit breakers, and the output ends of the AFE inverters are electrically connected with the DC distribution board.

[0075] Preferably, the number of the input branches, the output branches and the AFE inverters is equal to the number of the general battery replacement box positions.

[0076] Further, the DC distribution board is provided with a DC_BUS1 DC bus, a DC_BUS2 DC bus, a plurality of DCC bidirectional inverters and four DAC inverters.

[0077] The DC_BUS1 DC bus and the DC_BUS2 DC bus are connected in parallel into a DC1000V DC bus through a fuse F9 and a circuit breaker K11.

[0078] The DC_BUS1 DC bus leads out a plurality of first input branches, and the first input branches are electrically connected with the output ends of the AFE inverters through first fuses.

[0079] The DC_BUS2 direct current bus leads to several second input branches, which are electrically connected to one end of the DCC bidirectional inverter through a second fuse, and the other end of the DCC bidirectional inverter is electrically connected to the battery positive electrode interface and the battery negative electrode interface of the containerized battery through a third circuit breaker, and are used for outputting and charging the electric energy of the containerized battery. When the output power of the containerized power generation device is greater than the power consumption of the electric ship in the battery swap mode, the excess electric energy of the containerized power generation device is used to charge the containerized battery through the DCC bidirectional inverter;

[0080] The first output branch line led out from the DC_BUS1 DC busbar is electrically connected to the input end of the DAC inverter DAC1 through the fuse F6, and the output end of the DAC inverter DAC1 is electrically connected to the left propulsion motor M1 through the circuit breaker K8, for supplying power to the left propulsion motor M1;

[0081] The DC_BUS2 direct current bus leads to a second output branch which is electrically connected to the input end of the DAC inverter DAC2 through a fuse F7, and the output end of the DAC inverter DAC2 is electrically connected to the right propulsion motor M2 through a circuit breaker K9, for supplying power to the right propulsion motor M2;

[0082] The DC_BUS1 DC bus leads to a third output branch which is electrically connected to the input end of the DAC inverter DAC3 through a fuse F5, and the output end of the DAC inverter DAC3 is electrically connected to the second AC distribution board through a circuit breaker K7;

[0083] The fourth output branch line led out from the DC_BUS2 DC bus is electrically connected to the input end of the DAC inverter DAC4 through the fuse F8, and the output end of the DAC inverter DAC4 is electrically connected to the second AC distribution board through the circuit breaker K10.

[0084] Preferably, a plurality of the second input branches and the DCC bidirectional inverters are redundantly arranged.

[0085] Preferably, the number of the second input branches and the DCC bidirectional inverters is equal to the number of the battery exchange box positions.

[0086] Furthermore, the second AC distribution board is provided with an AC400V_OUT1 AC busbar, an AC400V_OUT2 AC busbar, an AC220V_OUT AC busbar, an isolation transformer T1, an isolation transformer T2 and an isolation transformer T3;

[0087] The AC400V_OUT1 AC bus is electrically connected to the AC400V_OUT2 AC bus through the circuit breaker K14 to form the AC400V_OUT AC bus;

[0088] The AC400V_OUT1 AC bus leads out a third input branch, the third input branch is electrically connected with the output end of the isolation transformer T1, and the input end of the isolation transformer T1 is electrically connected with the third output branch;

[0089] The AC400V_OUT2 AC bus leads out a fourth input branch, the fourth input branch is electrically connected with the output end of the isolation transformer T2, and the input end of the isolation transformer T2 is electrically connected with the fourth output branch;

[0090] The AC400V_OUT2 AC bus leads out a plurality of fifth input branches, the fifth input branches are electrically connected with the first three-phase AC input interface or the second three-phase AC input interface of the container type DC power generation device through the fourth circuit breaker, and are used for supplying power to the container type power generation device;

[0091] The AC400V_OUT2 AC bus leads out a fifth branch, the fifth branch is electrically connected with the input end of the isolation transformer T3 through the circuit breaker K12, and the output end of the isolation transformer T3 is electrically connected with the AC220V_OUT AC bus through the circuit breaker K13.

[0092] The hybrid power system of the battery replacement mode electric ship further comprises an electric energy management system, and the electric energy management system is electrically connected with two groups of RS485 buses, which are a first RS485 bus and a second RS485 bus;

[0093] The first RS485 bus is electrically connected with a battery management system, a power generation device controller, a propulsion motor controller of the left propulsion motor and a propulsion motor controller of the right propulsion motor, respectively, so that the electric energy management system exchanges information with the battery management system, the power generation device controller, the propulsion motor controller of the left propulsion motor and the propulsion motor controller of the right propulsion motor through the first RS485 bus, and issues a control instruction;

[0094] The second RS485 bus is electrically connected with an instrument of the ship body, a DC insulation detector and the DCC bidirectional inverter, respectively, so that the electric energy management system exchanges information with the instrument of the ship body, the DC insulation detector and the DCC bidirectional inverter through the second RS485 bus, and issues a control instruction;

[0095] The second RS485 bus is also electrically connected with the AFE inverter, so that the electric energy management system exchanges information with the AFE inverter through the second RS485 bus, and issues a control instruction.

[0096] The utility model discloses the following beneficial effects are obtained by adopting the technical scheme:

[0097] The electric ship of the power exchange mode and the hybrid power system thereof provided by the utility model can realize flexible switching of the power mode by setting the power exchange box position on the deck of the ship body, installing the required number of container type batteries and container type power generation devices on the power exchange box position or unloading the container type batteries and container type power generation devices from the power exchange box position by hoisting according to the required cruising range; the ship body, the container type batteries and the container type power generation devices are produced in a standardized manner, thereby reducing the complexity of ship berth design and further reducing the shipbuilding cost. BRIEF DESCRIPTION OF DRAWINGS

[0098] In order to more clearly illustrate the specific embodiments of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings described below are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0099] Figure 1 The front view of the electric ship of the power exchange mode provided by the utility model embodiment is provided.

[0100] Figure 2 The front view of the container type alternating current power generation device of the electric ship of the power exchange mode provided by the utility model embodiment is provided. Figure 1 The top view of the electric ship of the power exchange mode shown in the figure is provided.

[0101] Figure 3 The front view of the container type battery of the electric ship of the power exchange mode provided by the utility model embodiment is provided.

[0102] Figure 4 The front view of the container type direct current power generation device of the electric ship of the power exchange mode provided by the utility model embodiment is provided.

[0103] Figure 5 The front view of the container type direct current power generation device of the electric ship of the power exchange mode provided by the utility model embodiment is provided.

[0104] Figure 6 The rear view of the container type direct current power generation device of the electric ship of the power exchange mode provided by the utility model embodiment is provided.

[0105] Figure 7 The hybrid power system diagram of the electric ship of the power exchange mode provided by the utility model embodiment is provided.

[0106] Figure 8 The third alternating current power distribution board circuit diagram of the container type alternating current power generation device of the electric ship of the power exchange mode provided by the utility model embodiment is provided.

[0107] Figure 9 The third direct current distribution board and the fourth alternating current distribution board circuit diagram of the container type direct current generating device of the electric ship in the battery replacing mode are provided for the embodiments of the present application.

[0108] Figure 10 The connection relationship diagram of the electric energy management system EMS of the electric ship in the battery replacing mode is provided for the embodiments of the present application.

[0109] Reference signs:

[0110] 2: container type alternating current generating device; 2-1: three-phase alternating current output interface; 2-2: first three-phase alternating current input interface; 2-3: alternating current generating device communication interface; 2-4: alternating current generating device display screen; 3: container type battery; 3-1: battery positive electrode interface; 3-2: battery negative electrode interface; 3-3: battery communication interface; 3-4: battery display screen; 4-1: direct current distribution box; 4-2: first alternating current distribution box; 4-3: second alternating current distribution box; 4-4: battery replacing box position; 4-5: ordinary box position; 4-6: battery replacing box position; 4-7: general battery replacing box position; 5: container type direct current generating device; 5-1: positive direct current interface; 5-2: negative direct current interface; 5-3: second three-phase alternating current input interface; 5-4: direct current generating device communication interface; 5-5: direct current generating device display screen. DETAILED DESCRIPTION

[0111] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0112] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0113] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "connection", "connect" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the above-mentioned terms can be understood in the utility model the specific meaning of the specific circumstances.

[0114] The utility model will be further explained in combination with specific embodiments.

[0115] It also needs to be explained that the following specific examples or specific embodiments are a series of optimized setting modes listed by the utility model to further explain the specific utility model content, and these setting modes can be mutually combined or mutually associated.

[0116] Embodiment 1

[0117] As Figures 1-4 The utility model provides a kind of electric ship of battery replacement mode, including: ship body, container battery 3 and container power generation device;The deck of the ship body is provided with several battery replacement box positions 4-4, including battery replacement box position 4-6 and general battery replacement box position 4-7;The battery replacement box position 4-6 is used to install the container battery 3 or ordinary container;The general battery replacement box position 4-7 is used to install the container battery 3 or the container power generation device, or install ordinary container;The container battery 3 is detachably installed on the battery replacement box position 4-4, for the power supply of the ship body;The container power generation device is detachably installed on the general battery replacement box position 4-7, for the power supply of the ship body and the charging of the container battery 3;

[0118] In use, the container battery 3 and the container power generation device are installed according to the endurance mileage requirement; when sailing for a short distance, the required number of container batteries 3 are installed on the required number of battery replacement box positions 4-6 through hoisting according to the endurance mileage requirement, the power output mode of the electric ship in the replacement mode is pure electric mode, power is supplied to the ship body through the container battery 3, and ordinary containers can be installed on the remaining battery replacement box positions 4-4 to increase the loading space; when sailing for a medium distance, the required number of container batteries 3 are installed on a plurality of battery replacement box positions 4-4 through hoisting according to the endurance mileage requirement, and the remaining container batteries 3 are installed on the general battery replacement box position 4-7 after a plurality of battery replacement box positions 4-6 are full, the power output mode of the electric ship in the replacement mode is pure electric mode, power is supplied to the ship body through the container battery 3, and ordinary containers can be installed on the remaining battery replacement box positions 4-4 to increase the loading space; when sailing for a long distance, a plurality of container batteries 3 are installed on a plurality of battery replacement box positions 4-6 through hoisting according to the endurance mileage requirement, and a plurality of container power generation devices are installed on a plurality of general battery replacement box positions 4-7 through hoisting, the power output mode of the electric ship in the replacement mode is a hybrid extended range mode, and power is supplied to the ship body through a hybrid power system composed of the container battery 3 and the container power generation device.

[0119] The application can flexibly switch the power mode by arranging the battery replacement box position 4-4 on the deck of the ship body, installing or uninstalling the required number of container batteries 3 and container power generation devices on the battery replacement box position 4-4 through hoisting according to the endurance mileage requirement; the ship body, the container battery 3 and the container power generation device are produced in a standardized manner, which reduces the complexity of ship design and further reduces the shipbuilding cost.

[0120] On the basis of the above technical solution, further preferably, a power distribution box and a propulsion motor are arranged in the cabin of the ship body; the power distribution box is electrically connected with the container battery 3, the container power generation device, the propulsion motor and the power load of the ship body, and is used for electric energy distribution of the electric ship in the replacement mode; the propulsion motor is used to drive the ship body to sail. More preferably, a propulsion motor controller is further arranged in the cabin of the ship body, and is used to control the operation of the propulsion motor.

[0121] Further, the box body of the container battery 3 is provided with a battery positive electrode interface 3-1 and a battery negative electrode interface 3-2; one side of the battery replacement position 4-4 is provided with a direct current pile, and the positive electrode direct current cable and the negative electrode direct current cable of the power distribution box are led out through the direct current pile; the leading ends of the positive electrode direct current cable and the negative electrode direct current cable are respectively provided with a positive electrode direct current plug and a negative electrode direct current plug, which are used for plugging with the battery positive electrode interface 3-1 and the battery negative electrode interface 3-2 respectively, so that the power distribution box is electrically connected with the container battery 3.

[0122] In the embodiment, the container power generation device is a container alternating current power generation device 2; the box body of the container alternating current power generation device 2 is provided with a three-phase alternating current output interface 2-1 and a first three-phase alternating current input interface 2-2; the other side of the general battery replacement position 4-7 is provided with an alternating current pile, and the three-phase alternating current input cable and the three-phase alternating current output cable of the power distribution box are led out through the alternating current pile; the leading ends of the three-phase alternating current input cable and the three-phase alternating current output cable are respectively provided with a three-phase alternating current input plug and a three-phase alternating current output plug, which are used for plugging with the three-phase alternating current output interface 2-1 and the first three-phase alternating current input interface 2-2 respectively, so that the power distribution box is electrically connected with the container alternating current power generation device 2.

[0123] Further, the power distribution box comprises a first alternating current power distribution box 4-2, a direct current power distribution box 4-1 and a second alternating current power distribution box 4-3; the first alternating current power distribution box 4-2, the direct current power distribution box 4-1 and the second alternating current power distribution box 4-3 are electrically connected in sequence; the propulsion motor is electrically connected with the direct current power distribution box 4-1; the positive electrode direct current cable and the negative electrode direct current cable are led out from the direct current power distribution box 4-1; the three-phase alternating current input cable is led out from the first alternating current power distribution box 4-2; and the three-phase alternating current output cable is led out from the second alternating current power distribution box 4-3. More preferably, the ship body is provided with an electric energy management system for information interaction and linkage control of the ship body, the container battery 3, the container power generation device, the propulsion motor and the power load of the ship body.

[0124] Further, the box body of the container battery 3 is provided with a battery positive electrode interface 3-1 and a battery negative electrode interface 3-2; one side of the battery replacement position 4-4 is provided with a direct current pile, and the positive electrode direct current cable and the negative electrode direct current cable of the power distribution box are led out through the direct current pile; the leading ends of the positive electrode direct current cable and the negative electrode direct current cable are respectively provided with a positive electrode direct current plug and a negative electrode direct current plug, which are used for plugging with the battery positive electrode interface 3-1 and the battery negative electrode interface 3-2 respectively, so that the power distribution box is electrically connected with the container battery 3.

[0125] Furthermore, a battery display screen 3-4 and a battery communication interface 3-3 are also provided on the box of the container battery 3; the battery display screen 3-4 is electrically connected to the battery management system, and is used to display the basic information and working status of the container battery 3, and manually control the operation of the container battery 3; the battery communication interface 3-3 is electrically connected to the battery management system; the first RS485 bus of the power management system is led out through the DC power pile or the AC power pile, and a communication plug is provided at one end of the lead-out end of the first RS485 bus, which is used to be plugged into the battery communication interface 3-3 through the communication plug, so that the power management system is electrically connected to the battery management system of the container battery 3.

[0126] More preferably, the containerized battery 3 is usually further provided with a ventilation system, a fire detection system, a comprehensive alarm display system, etc.

[0127] Furthermore, a fuel tank, a fuel supply system, a generator set, a generator distribution board and a generator controller are provided in the box of the containerized power generation device; the fuel tank, the fuel supply system and the generator set are connected in sequence; the fuel tank is used to store the fuel of the generator set, and the fuel can be a liquid clean fuel such as methanol, or a gaseous clean fuel such as hydrogen or ammonia; the fuel supply system is used to transport the fuel; the generator set is used to generate electricity; the generator distribution board is electrically connected to the generator set and the load in the containerized power generation device, and is used for the distribution of electric energy to the containerized power generation device; the generator controller is used to control the operation of the containerized power generation device; the generator controller usually adopts a programmable logic controller (PLC), and the fuel supply system, the generator set and the generator distribution board are controlled by the programmable logic controller.

[0128] In this embodiment, the generator set of the containerized AC power generation device 2 is an AC generator set; the generator distribution board of the containerized AC power generation device 2 is a third AC distribution board, which is electrically connected to the AC generator set and the load in the containerized AC power generation device 2 and is used for distributing electric energy of the containerized AC power generation device 2; the third AC distribution board is electrically connected to the three-phase AC output interface 2-1 and the first three-phase AC input interface 2-2.

[0129] More preferably, the container type power generation device is further provided with a power generation device display screen and a power generation device communication interface on the box body; the power generation device display screen is electrically connected with the power generation device controller, used for displaying the basic information and working state of the container type power generation device, and manually controlling the operation of the container type power generation device; the power generation device communication interface is electrically connected with the power generation device controller; the first RS485 bus is plugged with the communication plug and the power generation device communication interface, so that the electric energy management system is electrically connected with the power generation device controller of the container type power generation device. In the embodiment, the box body of the container type alternating current power generation device 2 is provided with an alternating current power generation device display screen 2-4 and an alternating current power generation device communication interface 2-3.

[0130] Further, the tail of the ship body is provided with a propeller, which is electrically connected with the propelling motor, used for driving the propeller to rotate by the propelling motor, and driving the ship body to sail by the propelling force of the propeller.

[0131] More preferably, the deck of the ship body is further provided with a general box position 4-5, used for installing a general container. In the embodiment, the container type battery 3, the container type power generation device and the general container all adopt a standard 40-foot container cabinet.

[0132] In the embodiment, the driving cabin of the ship body is provided with a first switch and a second switch, used for manually switching the power output mode of the electric ship in the battery replacement mode, and the priority of the manual switching control is higher than that of the automatic control of the electric energy management system.

[0133] When the first switch is opened and the second switch is closed, the power output mode of the electric ship in the battery replacement mode is switched to the pure electric mode; when the first switch is opened and the second switch is opened, the power output mode of the electric ship in the battery replacement mode is switched to the hybrid extended range mode; when the first switch is closed and the second switch is opened, the power output mode of the electric ship in the battery replacement mode is switched to the extended range charging mode; the extended range charging mode can charge the container type battery 3 by the container type power generation device; when the electric ship in the battery replacement mode is docked, the ship body is usually provided with living electricity by the container type battery 3, and in the case that the electric quantity of the container type battery 3 is low and there is no charging equipment on the shore, the power output mode is switched to the extended range charging mode, and the container type battery 3 is charged by the container type power generation device.

[0134] The utility model discloses a power exchange box position 4-4 is set up on the deck of the ship body, can according to the required number of container type battery 3 and container type power generation device of the required number of container type battery 3 and container type power generation device are installed on the power exchange box position 4-4 or unload from the power exchange box position 4-4 according to the endurance mileage demand, realizes the flexible switching of power mode, the ship body is with container type battery 3, container type power generation device respectively standardization production, reduced the complexity of the ship berth design, and further reduced the shipbuilding cost.

[0135] Embodiment 2

[0136] This embodiment is basically same with embodiment 1, and the difference is that:

[0137] As Figures 5-6 The utility model discloses a power exchange mode's electric ship, the container type power generation device is container type direct current power generation device, the box body one side of container type direct current power generation device 5 is provided with positive direct current interface 5-1 and negative direct current interface 5-2, and the other side is provided with second three-phase alternating current input interface 5-3, is used for being inserted with positive direct current interface 5-1 and negative direct current interface 5-2 respectively with positive direct current plug and negative direct current plug, three-phase alternating current output plug is inserted with second three-phase alternating current input interface 5-3, thereby, the power distribution box is electrically connected with container type direct current power generation device 5.

[0138] More preferably, the generator set of the container type direct current power generation device 5 is a direct current generator set; the power generation device distribution board of the container type direct current power generation device 5 includes a third direct current distribution board and a fourth alternating current distribution board, the third direct current distribution board is electrically connected with the direct current generator set and the direct current load in the container type direct current power generation device, the fourth alternating current distribution board is electrically connected with the alternating current load in the container type direct current power generation device, for the electric energy distribution of the container type direct current power generation device 5, the third direct current distribution board is electrically connected with the positive direct current interface 5-1 and the negative direct current interface 5-2, and the fourth alternating current distribution board is electrically connected with the second three-phase alternating current input interface 5-3.

[0139] And, the box body of the container type direct current power generation device 5 is further provided with a direct current power generation device display screen 5-5 and a direct current power generation device communication interface 5-4.

[0140] Embodiment 3

[0141] As Figures 7-8 And Figure 10As shown, the hybrid power system of the electric ship in the power swapping mode provided by the embodiment comprises the container battery, the container power generation device, the first AC distribution panel, the DC distribution panel, the second AC distribution panel and two propulsion motors; the container power generation device is a container AC power generation device or a container DC power generation device; the third AC distribution panel of the container AC power generation device is provided with an AC400V three-phase AC bus, an AC220V single-phase AC bus, an isolation transformer T4 and an isolation transformer T5; a first branch line of the AC400V three-phase AC bus is electrically connected to three phase lines of an AC generator set G of the container AC power generation device through a circuit breaker K21; a second branch line of the AC400V three-phase AC bus is electrically connected to a three-phase AC output interface 2-1 of the container AC power generation device through a circuit breaker K28, and is used for electric energy output of the AC generator set G; a third branch line of the AC400V three-phase AC bus is electrically connected to an output end of the isolation transformer T5 through a circuit breaker K22, and an input end of the isolation transformer T5 is electrically connected to a first three-phase AC input interface 2-2 of the container AC power generation device, and is used for power supply to loads in the container AC power generation device; a fourth branch line of the AC400V three-phase AC bus is electrically connected to an input end of the isolation transformer T4 through a circuit breaker K24, and an output end of the isolation transformer T4 is electrically connected to the AC220V single-phase AC bus through a circuit breaker K25; the AC400V three-phase AC bus and the AC220V single-phase AC bus are used for power supply to loads in the container AC power generation device; the first AC distribution panel, the DC distribution panel and the second AC distribution panel are arranged in a distribution box of the ship body; the two propulsion motors are respectively a left propulsion motor M1 and a right propulsion motor M2. More preferably, the first AC distribution panel, the DC distribution panel and the second AC distribution panel are respectively arranged in a first AC distribution box, a DC distribution box and a second AC distribution box.

[0142] Further, the first AC distribution panel is provided with an AC400V IN AC bus and a plurality of AFE inverters; the AC400V IN AC bus leads out a plurality of input branch lines, the input branch lines are electrically connected to the first three-phase AC output interface 2-1 through first circuit breakers, and a plurality of the container AC power generation devices are connected in parallel on the AC400V IN AC bus; referring to Figure 6 As shown, the circuit breaker K1 and the circuit breaker K2 are both the first circuit breakers; the AC400V IN AC bus also leads out a plurality of output branch lines, the output branch lines are electrically connected to input ends of the AFE inverters through second circuit breakers, and output ends of the AFE inverters are electrically connected to the DC distribution panel; referring to Figure 6As shown, the circuit breaker K3 and the circuit breaker K4 are both the second circuit breaker. More preferably, the number of the input branch lines, the output branch lines and the AFE inverters is equal to the number of the general battery swap positions.

[0143] Further, the DC distribution board is provided with a DC_BUS1 DC bus, a DC_BUS2 DC bus, a plurality of DCC bidirectional inverters and four DAC inverters; the DC_BUS1 DC bus is connected in parallel with the DC_BUS2 DC bus through a fuse F9 and a circuit breaker K11 to form a DC1000V DC bus; the DC_BUS1 DC bus leads out a plurality of first input branch lines, which are electrically connected to the output ends of the AFE inverters through first fuses; referring to Figure 6 As shown, the fuse F1 and the fuse F2 are both the first fuse; the DC_BUS2 DC bus leads out a plurality of second input branch lines, which are electrically connected to one end of the DCC bidirectional inverters through second fuses, and the other end of the DCC bidirectional inverters is electrically connected to the positive electrode interface and the negative electrode interface of the container battery for the power output and charging of the container battery; when the output power of the container generator is greater than the power consumption of the electric ship in the battery swap mode, the excess power of the container generator is charged to the container battery through the DCC bidirectional inverter; referring to Figure 6 As shown, the circuit breaker K5 and the circuit breaker K6 are both the third circuit breaker, and the fuse F3 and the fuse F4 are both the second fuse; the DC_BUS1 DC bus leads out a first output branch line which is electrically connected to the input end of the DAC inverter DAC1 through a fuse F6, and the output end of the DAC inverter DAC1 is electrically connected to the left propulsion motor M1 through a circuit breaker K8 for power supply to the left propulsion motor M1; the DC_BUS2 DC bus leads out a second output branch line which is electrically connected to the input end of the DAC inverter DAC2 through a fuse F7, and the output end of the DAC inverter DAC2 is electrically connected to the right propulsion motor M2 through a circuit breaker K9 for power supply to the right propulsion motor M2; the DC_BUS1 DC bus leads out a third output branch line which is electrically connected to the input end of the DAC inverter DAC3 through a fuse F5, and the output end of the DAC inverter DAC3 is electrically connected to the second AC distribution board through a circuit breaker K7; the DC_BUS2 DC bus leads out a fourth output branch line which is electrically connected to the input end of the DAC inverter DAC4 through a fuse F8, and the output end of the DAC inverter DAC4 is electrically connected to the second AC distribution board through a circuit breaker K10. More preferably, a plurality of the second input branch lines and the DCC bidirectional inverters are redundantly arranged. The number of the second input branch lines and the DCC bidirectional inverters is equal to the number of the battery swap positions.

[0144] Further, the second alternating current distribution panel is provided with an AC400V OUT1 alternating current bus, an AC400V OUT2 alternating current bus, an AC220V OUT alternating current bus, an isolation transformer T1, an isolation transformer T2 and an isolation transformer T3; the AC400V OUT1 alternating current bus is electrically connected with the AC400V OUT2 alternating current bus through a circuit breaker K14 to form an AC400V OUT alternating current bus; the AC400V OUT1 alternating current bus leads out a third input branch, the third input branch is electrically connected with an output end of the isolation transformer T1, and an input end of the isolation transformer T1 is electrically connected with the third input branch; the AC400V OUT2 alternating current bus leads out a fourth input branch, the fourth input branch is electrically connected with an output end of the isolation transformer T2, and an input end of the isolation transformer T2 is electrically connected with the fourth input branch; the AC400V OUT2 alternating current bus leads out a plurality of fifth input branches, the fifth input branches are electrically connected with the first three-phase alternating current input interface 2-2 through fourth circuit breakers, and are used for supplying power to the container alternating current generating device; the AC400V OUT2 alternating current bus leads out a fifth branch, the fifth branch is electrically connected with an input end of the isolation transformer T3 through a circuit breaker K12, and an output end of the isolation transformer T3 is electrically connected with the AC220V OUT alternating current bus through a circuit breaker K13.

[0145] The hybrid power system of the battery replacement mode electric ship further comprises an electric energy management system, and two groups of RS485 buses, namely a first RS485 bus RS485 I and a second RS485 bus RS485 II, are electrically connected to the electric energy management system.

[0146] The first RS485 bus RS485 I is electrically connected with a battery management system BMS, a generating device controller VCU, a left propulsion motor controller EMPC1 of the left propulsion motor M1 and a right propulsion motor controller EMPC2 of the right propulsion motor M2, respectively, so that the electric energy management system exchanges information with and issues control instructions to the battery management system BMS, the generating device controller VCU, the left propulsion motor controller EMPC1 of the left propulsion motor M1 and the right propulsion motor controller EMPC2 of the right propulsion motor M2 through the first RS485 bus RS485 I.

[0147] The second RS485 bus RS485 II is electrically connected to the instrument of the hull, the DC insulation tester and the DCC bidirectional inverter respectively, and is used for the power management system to exchange information with the instrument of the hull, the DC insulation tester and the DCC bidirectional inverter through the second RS485 bus RS485 II, and to issue control instructions;

[0148] The second RS485 bus RS485 II is also electrically connected to the AFE inverter, and is used for the power management system to exchange information with the AFE inverter through the second RS485 bus RS485 II and issue control instructions.

[0149] Example 4

[0150] This embodiment is basically the same as embodiment 3, except that:

[0151] like Figure 9 As shown, this embodiment provides a hybrid power system for an electric ship in a battery swap mode as described above, wherein the containerized power generation device is the containerized DC power generation device; a DC640V high-voltage DC bus is provided on the third DC distribution board of the containerized DC power generation device; the DC640V high-voltage DC bus leads out a first high-voltage DC branch line which is connected to the positive high-voltage cable and the negative high-voltage cable of the DC generator set G' of the containerized DC power generation device through a circuit breaker K51; the DC640V high-voltage DC bus leads out a second high-voltage DC branch line which is electrically connected to the high-voltage DC output interface 5-0 through a circuit breaker K58, and is electrically connected to the positive DC interface and the negative DC interface through the high-voltage DC output interface 5-0.

[0152] Furthermore, the fourth DC distribution board of the containerized DC generator is provided with a second AC400V three-phase AC busbar, a second AC220V single-phase AC busbar, an isolation transformer T6, and an isolation transformer T7; the second AC400V three-phase AC busbar leads to a first three-phase AC branch line, which is electrically connected to the output end of the isolation transformer T7 through a circuit breaker K52, and the input end of the isolation transformer T7 is electrically connected to the second three-phase AC input interface 5-3 of the containerized DC generator, for supplying power to the internal load of the containerized AC generator; the second AC400V three-phase AC busbar leads to a second three-phase AC branch line, which is electrically connected to the input end of the isolation transformer T6 through a circuit breaker K54, and the output end of the isolation transformer T6 is electrically connected to the AC220V single-phase AC busbar through a circuit breaker K55; in this embodiment, the positive DC interface and the negative DC interface are electrically connected to the second input branch line for outputting power from the containerized DC generator; the second three-phase AC input interface 5-3 is connected to the fifth input branch line.

[0153] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electric ship of swap battery mode, characterized in that, The utility model relates to a kind of electric ship, including: Hull, container battery and container power generation device; Several battery replacement box positions are arranged on the deck of the hull, including battery replacement box position and general battery replacement box position; The battery replacement box position is used to install the container battery or ordinary container; The general battery replacement box position is used to install the container battery or the container power generation device, or install ordinary container; The container battery is detachably installed on the battery replacement box position, for the power supply of the hull; The container power generation device is detachably installed on the general battery replacement box position, for the power supply of the hull and the charging of the container battery; The container power generation device is container alternating current power generation device or container direct current power generation device; The cabin of the hull is provided with distribution box and propulsion motor; The distribution box is electrically connected with the container battery, the container power generation device, the propulsion motor and the power load of the hull respectively, for the electric energy distribution of the battery replacement mode electric ship; The propulsion motor is used to drive the hull to sail.

2. An electrically powered watercraft according to claim 1, characterised in that, The box of the container battery is provided with battery positive electrode interface and battery negative electrode interface; One side of the battery replacement box position is provided with direct current pile, and the positive electrode direct current cable and the negative electrode direct current cable of the distribution box are led out through the direct current pile, and the leading end of the positive electrode direct current cable and the negative electrode direct current cable is respectively provided with positive electrode direct current plug and negative electrode direct current plug, for being respectively plugged with the battery positive electrode interface and the battery negative electrode interface through the positive electrode direct current plug and the negative electrode direct current plug, so that the distribution box is electrically connected with the container battery.

3. An electrically powered watercraft as claimed in claim 1 wherein, The box of the container alternating current power generation device is provided with three-phase alternating current output interface and first three-phase alternating current input interface; The other side of the general battery replacement box position is provided with alternating current pile, and the three-phase alternating current input cable and the three-phase alternating current output cable of the distribution box are led out through the alternating current pile, and the leading end of the three-phase alternating current input cable and the three-phase alternating current output cable is respectively provided with three-phase alternating current input plug and three-phase alternating current output plug, for being respectively plugged with the three-phase alternating current output interface and the first three-phase alternating current input interface through the three-phase alternating current input plug and the three-phase alternating current output plug, so that the distribution box is electrically connected with the container alternating current power generation device.

4. An electrically powered watercraft according to claim 2, characterised in that, The box of the container direct current power generation device is provided with positive electrode direct current interface and negative electrode direct current interface on one side, and second three-phase alternating current input interface on the other side, for being respectively plugged with the positive electrode direct current plug and the negative electrode direct current plug through the positive electrode direct current interface and the negative electrode direct current interface, and the three-phase alternating current output plug is plugged with the second three-phase alternating current input interface, so that the distribution box is electrically connected with the container direct current power generation device.

5. The electrically powered watercraft of claim 1, wherein, The box of the container power generation device is provided with fuel cabin, fuel supply system, generator set, power generation device distribution board and power generation device controller. The fuel tank, the fuel supply system and the generator set are sequentially connected; the fuel tank is used for storing fuel of the generator set; the fuel supply system is used for delivering fuel; and the generator set is used for generating electricity; The power distribution board of the power generation device is electrically connected with the generator set and the load in the container-type power generation device, and is used for power distribution of the container-type power generation device; The power generation device controller is used for controlling operation of the container-type power generation device; The generator set of the container-type alternating current power generation device is an alternating current generator set; The power distribution board of the container-type alternating current power generation device is a third alternating current power distribution board, which is electrically connected with the alternating current generator set and the load in the container-type alternating current power generation device, and is used for power distribution of the container-type alternating current power generation device; The third alternating current power distribution board is electrically connected with a three-phase alternating current output interface and a first three-phase alternating current input interface.

6. An electrically powered watercraft as claimed in claim 4 wherein, The generator set of the container-type direct current power generation device is a direct current generator set; The power distribution board of the container-type direct current power generation device includes a third direct current power distribution board and a fourth alternating current power distribution board, the third direct current power distribution board is electrically connected with the direct current generator set and the direct current load in the container-type direct current power generation device, and the fourth alternating current power distribution board is electrically connected with the alternating current load in the container-type direct current power generation device, and is used for power distribution of the container-type direct current power generation device; The third direct current power distribution board is electrically connected with the positive direct current interface and the negative direct current interface; The fourth alternating current power distribution board is electrically connected with the second three-phase alternating current input interface.

7. A hybrid power system for an electrically powered watercraft, characterized by The hybrid power system is applied to the electric ship as claimed in any one of claims 1-6, and includes the container-type battery, the container-type power generation device, a first alternating current power distribution board, a direct current power distribution board, a second alternating current power distribution board and two propulsion motors; The container-type power generation device is a container-type alternating current power generation device or a container-type direct current power generation device; The third alternating current power distribution board of the container-type alternating current power generation device is provided with an AC400V three-phase alternating current bus, an AC220V single-phase alternating current bus, an isolation transformer T4 and an isolation transformer T5; The AC400V three-phase alternating current bus leads out a first branch line and is electrically connected with three phase lines of the alternating current generator set G of the container-type alternating current power generation device through a circuit breaker K21; The AC400V three-phase alternating current bus leads out a second branch line and is electrically connected with a three-phase alternating current output interface of the container-type alternating current power generation device through a circuit breaker K28, and is used for power output of the alternating current generator set G; The AC400V three-phase alternating current bus leads out a third branch line and is electrically connected with an output end of the isolation transformer T5 through a circuit breaker K22, an input end of the isolation transformer T5 is electrically connected with a first three-phase alternating current input interface of the container-type alternating current power generation device, and is used for power supply to the load in the container-type alternating current power generation device; The fourth branch line of the AC400V three-phase AC bus is electrically connected with the input end of the isolation transformer T4 through the circuit breaker K24, and the output end of the isolation transformer T4 is electrically connected with the AC220V single-phase AC bus through the circuit breaker K25; The AC400V three-phase AC bus and the AC220V single-phase AC bus are used for power supply of loads in the container-type AC power generation device; The first AC distribution panel, the DC distribution panel and the second AC distribution panel are arranged in the distribution box of the ship body; The two propulsion motors are a left propulsion motor M1 and a right propulsion motor M2.

8. The hybrid system according to claim 7, characterized by The first AC distribution panel is provided with an AC400V_IN AC bus and a plurality of AFE inverters; The AC400V_IN AC bus leads out a plurality of input branch lines, the input branch lines are electrically connected with the first three-phase AC output interface through the first circuit breaker, and a plurality of container-type AC power generation devices are connected in parallel on the AC400V_IN AC bus; The AC400V_IN AC bus also leads out a plurality of output branch lines, the output branch lines are electrically connected with the input end of the AFE inverter through the second circuit breaker, and the output end of the AFE inverter is electrically connected with the DC distribution panel.

9. The hybrid system of claim 8, wherein, The DC distribution panel is provided with a DC_BUS1 DC bus, a DC_BUS2 DC bus, a plurality of DCC bidirectional inverters and four DAC inverters; The DC_BUS1 DC bus is connected in parallel with the DC_BUS2 DC bus through the fuse F9 and the circuit breaker K11 to form a DC1000V DC bus; The DC_BUS1 DC bus leads out a plurality of first input branch lines, and the first input branch lines are electrically connected with the output end of the AFE inverter through the first fuse; The DC_BUS2 DC bus leads out a plurality of second input branch lines, the second input branch lines are electrically connected with one end of the DCC bidirectional inverter through the second fuse, and the other end of the DCC bidirectional inverter is electrically connected with the positive electrode interface and the negative electrode interface of the container-type battery through the third circuit breaker, for electric energy output and charging of the container-type battery, when the output power of the container-type power generation device is greater than the power consumption of the electric ship in the battery replacement mode, the excess electric energy of the container-type power generation device is charged to the container-type battery through the DCC bidirectional inverter; The DC_BUS1 DC bus leads out a first output branch line, and the first output branch line is electrically connected with the input end of the DAC inverter DAC1 through the fuse F6, the output end of the DAC inverter DAC1 is electrically connected with the left propulsion motor M1 through the circuit breaker K8, and the left propulsion motor M1 is supplied with power; The DC_BUS2 DC bus leads out a second output branch line, and the second output branch line is electrically connected with the input end of the DAC inverter DAC2 through the fuse F7, the output end of the DAC inverter DAC2 is electrically connected with the right propulsion motor M2 through the circuit breaker K9, and the right propulsion motor M2 is supplied with power; The third output branch of the DC_BUS1 DC bus is connected with the input end of the DAC inverter DAC3 through a fuse F5, and the output end of the DAC inverter DAC3 is connected with the second AC distribution board through a circuit breaker K7; The fourth output branch of the DC_BUS2 DC bus is connected with the input end of the DAC inverter DAC4 through a fuse F8, and the output end of the DAC inverter DAC4 is connected with the second AC distribution board through a circuit breaker K10.

10. The hybrid system according to claim 9, characterized by The second AC distribution board is provided with an AC400V_OUT1 AC bus, an AC400V_OUT2 AC bus, an AC220V_OUT AC bus, an isolation transformer T1, an isolation transformer T2 and an isolation transformer T3; The AC400V_OUT1 AC bus is connected with the AC400V_OUT2 AC bus through a circuit breaker K14 to form an AC400V_OUT AC bus; The AC400V_OUT1 AC bus is connected with the output end of the isolation transformer T1 through a third input branch, and the input end of the isolation transformer T1 is connected with the third output branch; The AC400V_OUT2 AC bus is connected with the output end of the isolation transformer T2 through a fourth input branch, and the input end of the isolation transformer T2 is connected with the fourth output branch; The AC400V_OUT2 AC bus is connected with the first three-phase AC input interface or the second three-phase AC input interface of the container type DC power generation device through a fourth circuit breaker and a plurality of fifth input branches, for supplying power to the container type power generation device; The AC400V_OUT2 AC bus is connected with the input end of the isolation transformer T3 through a fifth branch and a circuit breaker K12, and the output end of the isolation transformer T3 is connected with the AC220V_OUT AC bus through a circuit breaker K13.

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