A new hydrogen power modular electric drive ship

Abstract

The utility model discloses a novel hydrogen power modularization electric drive ship belongs to ship power technical field. It includes the driver's cabin, the cargo hold, hydrogen fuel storage jar, main auxiliary hydrogen fuel cell module, lithium battery and high pressure control module, electric drive module and engine room, and the driver's cabin is located in the bow, and the cargo hold is located in the middle part, and hydrogen fuel storage jar, fuel cell module, lithium battery module are arranged in the open deck, and electric drive module is located in the engine room. Hydrogen fuel storage jar is hydrogen supply for fuel cell, and fuel cell and lithium battery cooperate and power supply for electric drive module, and drive ship travel. The utility model discloses through modularization integration and open layout, promotes the safety when hydrogen leakage, increases the effective space of ship, is convenient for maintenance and shortens the construction period, is applicable to the green power reformation of inland river small -size ship.

Description

Technical Field

[0001] This utility model relates to the field of marine power system technology, specifically to a new type of hydrogen-powered modular electric propulsion ship, which is particularly suitable for green power retrofitting and new construction projects of small inland waterway vessels. Through modular design and safety layout, it improves the operational safety and construction efficiency of hydrogen fuel cell ships. Background Technology

[0002] As the global shipbuilding industry transitions towards low-carbon and zero-carbon technologies, hydrogen fuel cells, as a highly efficient and clean new energy technology, are receiving increasing attention for their application in ship propulsion systems. Hydrogen fuel cells directly convert the chemical energy of hydrogen and oxygen into electrical energy through an electrochemical reaction, offering advantages such as zero emissions and low noise. However, hydrogen has a wide explosion limit range (4.0%–75.6% volume concentration) and a density far less than air, making it prone to accumulating in enclosed spaces after leakage, posing a significant safety hazard.

[0003] Existing hydrogen-powered ships mostly follow the structural design of traditional ships, centralizing core equipment such as hydrogen fuel cells, hydrogen storage tanks, and lithium batteries in enclosed spaces like the engine room. This design has the following drawbacks: hydrogen leaks in the enclosed engine room are difficult to diffuse, easily reaching the explosive limit and causing fires or explosions; the discrete arrangement of equipment leads to crisscrossing cables and pipes, occupying a large amount of usable space, especially affecting small inland waterway vessels; the engine room is small and poorly lit, making equipment hoisting and maintenance difficult, increasing operation and maintenance costs; discrete equipment requires individual design of installation locations and connecting pipelines, resulting in long overall ship design cycles and low standardization.

[0004] To address the aforementioned issues, this invention proposes a novel hydrogen-powered modular electric propulsion vessel. By optimizing equipment layout and modular integration, it enhances the vessel's space utilization and construction efficiency while ensuring safety. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the purpose of this utility model is to provide a new type of hydrogen-powered modular electric propulsion ship, which solves the problems of high safety risks, low space utilization, difficult maintenance and long construction cycle caused by unreasonable equipment layout of existing hydrogen-powered ships.

[0006] To achieve the above objectives, this utility model provides a novel hydrogen-powered modular electric propulsion ship, including a bridge (1), a cargo hold (2), a hydrogen fuel storage tank (3), a main hydrogen fuel cell module (4), an auxiliary hydrogen fuel cell module (5), a lithium battery and high-voltage control module (6), an electric drive module (7), and an engine room.

[0007] The bridge (1) is located at the bow, the cargo hold (2) is located in the middle section of the ship, the hydrogen fuel storage tank (3), the main hydrogen fuel cell module (4), the auxiliary hydrogen fuel cell module (5), the lithium battery and the high voltage control module (6) are all located on the open deck, the electric drive module (7) is located in the engine room, and the drive motor of the electric drive module (7) is connected to the stern shaft.

[0008] The hydrogen fuel storage tank (3) is connected to the main hydrogen fuel cell module (4) and the auxiliary hydrogen fuel cell module (5) through piping. The main hydrogen fuel cell module (4) and the auxiliary hydrogen fuel cell module (5) are connected to the electric drive module (7), the lithium battery and the high voltage control module (6) through cables. The lithium battery and the high voltage control module (6) are connected to the electric drive module (7) through cables.

[0009] Preferably, the hydrogen fuel storage tank (3) includes at least two sub-tank groups, each sub-tank group containing at least four independent sub-tanks, and also includes a hydrogen supply pipeline, a pressure sensor, a hydrogen concentration detection sensor, and an alarm; the pressure sensor is located in the hydrogen supply pipeline, the hydrogen concentration detection sensor is located at the upper end of the gas supply side of the sub-tank, and the alarm is located on the side of the hydrogen fuel storage tank (3) facing the bow.

[0010] Preferably, the main hydrogen fuel cell module (4) and the auxiliary hydrogen fuel cell module (5) have the same structure, both including a hydrogen fuel cell, an inlet pipe system, a hydrogen concentration detection sensor, an air intake system and a cooling system; the cooling system includes a main water path and an auxiliary water path, the main water path is connected to the main radiator in the engine compartment, and the auxiliary water path is connected to the auxiliary radiator in the engine compartment.

[0011] Preferably, hydrogen concentration detection sensors are provided at the exhaust ports of the main hydrogen fuel cell module (4) and the auxiliary hydrogen fuel cell module (5), and the hydrogen concentration detection sensors are electrically connected to the alarm.

[0012] Preferably, the lithium battery and high-voltage control module (6) includes at least two lithium battery packs, a battery management system, at least two high-voltage distribution boxes, at least two DC-to-AC inverters and one high-voltage-to-low-voltage frequency converter; the lithium battery packs are connected to the high-voltage distribution boxes, and the high-voltage distribution boxes are connected to the inverters and the power drive module (7) respectively.

[0013] Preferably, the lithium battery and high-voltage control module (6) further includes a fire smoke sensor, which is configured corresponding to the lithium battery pack.

[0014] Preferably, the electric drive module (7) includes a motor, a motor controller, a cooling system and a mechanical connector; the motor is connected to the stern shaft through the mechanical connector, and the cooling system includes an electric drive cooling circulation pump, a heat exchanger and is connected to the cooling pipes in the engine room.

[0015] Preferably, the electric drive module (7) includes a port electric drive module and a starboard electric drive module, the port electric drive module being connected to the main hydrogen fuel cell module (4), and the starboard electric drive module being connected to the auxiliary hydrogen fuel cell module (5).

[0016] Preferably, the hydrogen fuel storage tank (3), the main hydrogen fuel cell module (4), the auxiliary hydrogen fuel cell module (5), the lithium battery and the high-voltage control module (6) are all fixed to the open deck using a through-hole installation method.

[0017] Preferably, the cab (1) is equipped with a control console and a living area, and the distance between the cab (1) and the hydrogen fuel storage tank (3) is not less than 1 / 3 of the total length of the ship.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model arranges dangerous equipment such as hydrogen fuel storage tanks and fuel cells on an open deck, using air circulation to accelerate hydrogen diffusion and reduce the risk of accumulation; multiple monitoring of hydrogen concentration, pressure sensors and alarms can provide real-time early warning of leakage or overpressure problems; lithium batteries are arranged in an open area, which is easy to control in case of fire and facilitates firefighting operations.

[0020] 2. The modular integrated design of this utility model reduces the redundant layout of discrete equipment, and the cables and pipes are arranged in a centralized manner, increasing the effective space of the cargo hold and living area; only the electric drive module is retained in the engine room, reducing the engine room volume and further freeing up ship space.

[0021] 3. The modular layout on the open deck of this utility model is spacious and well-lit, which facilitates equipment hoisting and maintenance; the modular design allows each system to operate independently, and modules can be replaced individually in case of failure, thus shortening the maintenance cycle.

[0022] 4. The modular structure of this utility model with through-hole installation enables standardized production and rapid assembly, reduces the complexity of on-site pipeline and cable connections, lowers the difficulty of overall ship design and construction, and shortens the construction period.

[0023] 5. The redundant design of the main and auxiliary fuel cell modules, dual lithium battery packs and dual electric drive modules in this utility model ensures that the system can still operate stably when a single device fails; the lithium battery and fuel cell work together to provide power, which can meet the peak power requirements of ships and adapt to complex working conditions.

[0024] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0025] Figure 1 This is an overall structural diagram of a preferred embodiment of the present invention;

[0026] Figure 2 This is a cabin cross-section of a preferred embodiment of the present invention;

[0027] Figure 3 This is a preferred embodiment of the stern deck layout diagram of this utility model;

[0028] Figure 4 This is a 3D outline of a hydrogen fuel storage tank;

[0029] Figure 5 This is a 3D outline of a hydrogen fuel cell module;

[0030] Figure 6 This is a 3D outline drawing of the lithium battery and high-voltage control module;

[0031] Figure 7 This is a 3D outline of the electric drive module.

[0032] The components include: 1. Cab; 2. Cargo compartment; 3. Hydrogen fuel storage tank; 4. Main hydrogen fuel cell module; 5. Auxiliary hydrogen fuel cell module; 6. Lithium battery and high-voltage control module; and 7. Electric drive module. Detailed Implementation

[0033] The following description, with reference to the accompanying drawings, illustrates several preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0034] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and this invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of some components has been appropriately exaggerated in the drawings.

[0035] This embodiment discloses a novel hydrogen-powered modular electric propulsion vessel, suitable for 500-ton inland waterway bulk carriers, with the overall structure as follows: Figure 1 , Figure 2 and Figure 3As shown, it mainly includes a bridge 1, a cargo hold 2, a hydrogen fuel storage tank 3, a main hydrogen fuel cell module 4, an auxiliary hydrogen fuel cell module 5, a lithium battery and high-voltage control module 6, a port side electric drive module 7, a starboard side electric drive module 8, and an engine room.

[0036] The bridge 1 is located at the bow, with a total length of 8 meters. It includes a control console, navigation equipment, and crew living area (including a rest room, kitchen, and toilet). The distance between the bridge 1 and the bow hydrogen fuel storage tank 3 is 25 meters (the total length of the ship is 70 meters, which meets the safety distance requirement of not less than 1 / 3 of the total length). It communicates with various modules via fiber optics to remotely control the operation of the entire ship.

[0037] Cargo hold 2 is located in the middle of the ship, with a total length of 40 meters and a capacity of about 800 cubic meters. It adopts an open design and uses hydraulic opening and closing of the hatch to load and unload cargo. There are passages on both sides of the cargo hold, connecting the bridge at the bow and the deck equipment area at the stern.

[0038] Open deck equipment area: Located at the stern (22 meters in total length), it is arranged in sequence with hydrogen fuel storage tank 3, main hydrogen fuel cell module 4, auxiliary hydrogen fuel cell module 5, lithium battery and high-voltage control module 6. Each module is connected to the deck through hole through the bottom flange and fixed with bolts. The installation gap is filled with sealant to prevent deck water from seeping in.

[0039] The engine room is located at the bottom of the stern, measuring 10 meters long, 5 meters wide, and 3 meters high. It houses the port side electric drive module 7, the starboard side electric drive module 8, and cooling system piping. The top of the engine room is equipped with ventilation openings and an emergency escape route.

[0040] Hydrogen fuel storage tank 3 Figure 4 As shown, the module is 6 meters long, 2 meters wide, and 2.5 meters high, and contains 8 independent sub-tanks (each with a volume of 500L and a working pressure of 35MPa), divided into two groups (4 in each group), which are integrated and fixed by a frame.

[0041] Sub-tanks: Made of 316L stainless steel, with a hydrogen embrittlement protective coating sprayed on the inner wall and a vacuum insulation layer wrapped around the outer layer of the tank to reduce hydrogen evaporation loss; the outlet of each sub-tank is connected to the hydrogen supply main pipe through a connecting pipe, and the main pipe is equipped with a manual shut-off valve and an electric shut-off valve (model: ZQDF-16P) to realize remote and manual dual control.

[0042] Sensors and alarms: A pressure sensor (model: PT124B-111, measurement range 0-40MPa) is installed on the hydrogen supply main pipe to monitor the pipeline pressure in real time. When the pressure exceeds 38MPa, the electric shut-off valve is triggered to close. A hydrogen concentration sensor (model: MQ-8, detection range 0-4%) is installed on the upper end of the gas supply side of the sub-tank. When the leakage concentration is ≥1%, an alarm signal is issued. The alarm is an integrated sound and light type (model: LTE-1101J), installed on the side of the storage tank frame facing the bow. When the alarm is triggered, it emits an 85dB sound and flashes a red light.

[0043] Hydrogen supply path: One set of sub-storage tanks is connected to the main hydrogen fuel cell module 4 via φ25mm stainless steel pipes, and another set is connected to the auxiliary hydrogen fuel cell module 5 via φ20mm stainless steel pipes. Check valves are installed on the pipelines to prevent backflow, and pipe clamps are installed every 1.5 meters to fix the pipelines and reduce pipeline fatigue caused by vibration.

[0044] The main hydrogen fuel cell module 4 and the auxiliary hydrogen fuel cell module 5 have the same structure, as shown below. Figure 5 As shown, the dimensions of a single module are 3m×1.5m×2m, integrating a 120kW hydrogen fuel cell stack (model: FCgen-120) and auxiliary systems.

[0045] Fuel cell stack: Composed of 300 graphite bipolar plates connected in series, with an operating temperature of 65-80℃ and a rated voltage of 48V. Hydrogen and filtered air are introduced through inlet pipes (φ15mm hydrogen pipe and φ80mm air pipe), respectively. The electrochemical reaction generates electricity and water (the exhaust gas contains a small amount of unreacted hydrogen).

[0046] Cooling system: The main water circuit (flow rate 20L / min) is connected to the main radiator in the engine compartment (heat dissipation area 10m²) via a φ32mm flexible hose. 2 The auxiliary water circuit (flow rate 15L / min) is used to cool the fuel cell stack; it is connected to the auxiliary radiator (heat dissipation area 6m²) in the engine room via a φ25mm flexible hose. 2 ), for air compressor (model: GA37VSD, displacement 6.2m). 3 / min) heat dissipation; both water circuits are equipped with electric water pumps (model: DB-12V) and temperature sensors (model: DS18B20), and the water pumps automatically increase speed when the water temperature is ≥85℃.

[0047] Exhaust gas treatment: The fuel cell stack exhaust gas is discharged through a φ50mm exhaust pipe with the pipe opening facing upwards (1.5m from the deck). A hydrogen concentration sensor (same as MQ-8) is installed at the outlet. When the concentration is ≥0.5%, the system will first alarm for 30 seconds. If it does not recover, it will automatically shut down and start nitrogen purging (nitrogen cylinder volume 50L, pressure 10MPa). The purging time is 5 minutes to ensure that the residual hydrogen concentration in the pipeline is ≤0.1%.

[0048] Electrical connection: The positive and negative terminals of the fuel cell stack are connected through a 120mm... 2 High-voltage cables connect to the high-voltage distribution box of the lithium battery and high-voltage control module 6; temperature heating cables (6mm) 2 The low-voltage inverter connected to the lithium battery module preheats the fuel cell stack via a 2kW heater when the ambient temperature is ≤5℃. The low-voltage power supply (24V) is provided by the ship's battery to power auxiliary equipment such as the fuel cell stack controller, hydrogen pump, and water pump.

[0049] Lithium battery and high voltage control module 6 Figure 6 As shown, the module measures 4m × 2m × 2.2m and integrates energy storage and power distribution functions.

[0050] The lithium battery consists of two 100kWh lithium iron phosphate battery packs (each cell has a voltage of 3.2V and is connected in series to form a 512V high voltage). It uses liquid cooling (the cooling medium is a 50% ethylene glycol solution). The battery management system (BMS, model: JK-BMS-512S) monitors the cell voltage, temperature and SOC (state of charge) in real time. It cuts off the charging and discharging circuit when there is overcharging (SOC≥95%) or over-discharging (SOC≤10%).

[0051] High-voltage distribution system: Two high-voltage distribution boxes (model: GDF-630A) correspond to the main and auxiliary fuel cell modules respectively. The boxes are equipped with DC circuit breakers (model: CDM1-630Z) to realize power on / off control. The output of the distribution box is divided into three paths: one path is connected to the motor controller, one path is connected to the DC / AC inverter (model: MPPT-3000W, output 220VAC) to supply power for the ship's living quarters, and the other path is connected to the DC / DC frequency converter (model: DCDC-24V-100A) to convert to 24V low-voltage power.

[0052] Redundancy design: The lithium battery pack, high-voltage distribution box, and inverter are all in use with one backup, and seamless switching is achieved through a transfer switch; a fire smoke sensor (model: JTY-GD-802) is installed on the top of the module. When the lithium battery pack thermally runs away and produces smoke, an alarm is immediately triggered and the high-voltage circuit is cut off. At the same time, the fire extinguishing device (dry powder fire extinguisher, model: MFZ / ABC4) is activated.

[0053] Charge and discharge control: The fuel cell output power is prioritized to supply the electric drive module, and the excess power (≥10kW) is charged into the lithium battery pack; when the ship needs peak power (≥300kW) for acceleration, the lithium battery and fuel cell supply power simultaneously; when the fuel cell stops, the lithium battery supplies power alone, with a range of ≥4 hours (under rated load).

[0054] The electric drive module is divided into port and starboard sections, with both modules having the same structure, such as... Figure 7As shown, a single module includes a 200kW permanent magnet synchronous motor (model: YVP200L-4) and supporting systems.

[0055] Motor and controller: The motor has a rated speed of 1500 rpm and is connected to a gearbox (reduction ratio 5:1) via a flexible coupling. It then drives the propeller (diameter 1.8m, pitch 1.2m) via the stern shaft. The motor controller (model: SVG200-4T200G) receives commands from the control panel and adjusts the motor speed to achieve ship speed change.

[0056] Cooling system: Integrated three-loop circulation system

[0057] Motor cooling circuit: flow rate 30L / min, heat exchange with engine compartment cooling water (river water) through heat exchanger, controlling motor temperature ≤80℃;

[0058] Fuel cell main cooling circuit: connected to the main water circuit of main hydrogen fuel cell module 4, with a flow rate of 20L / min;

[0059] Fuel cell auxiliary cooling circuit: connected to the auxiliary water circuit of auxiliary hydrogen fuel cell module 5, with a flow rate of 15L / min;

[0060] Each of the three circuits is equipped with an independent circulating pump (model: ISG50-160) and a flow sensor (model: LWGY-15), which will alarm when the flow is insufficient.

[0061] Mechanical connection: The motor output shaft is connected to the gearbox input shaft via a flange. The gearbox output shaft is connected to the stern shaft via a stern shaft sealing device (model: SB-120) to ensure underwater sealing performance. The stern shaft is made of 45 steel with chrome plating for rust prevention. The bearings are water-lubricated bearings (material: reinforced nylon) to avoid grease contamination of the water.

[0062] The workflow of this utility model is as follows:

[0063] 1. Start-up Phase

[0064] The crew member turns on the main power supply in the bridge 1, the electric shut-off valve of the hydrogen fuel storage tank 3 opens, and the hydrogen enters the main hydrogen fuel cell module 4 after being depressurized (down to 0.3MPa);

[0065] The fuel cell stack is started by a 24V low-voltage power supply. An air compressor works to introduce air, and hydrogen reacts with air in the stack to output electrical energy (initial voltage 400V).

[0066] After the lithium battery and high voltage control module 6 detects that the fuel cell output is stable, it closes the high voltage contactor, and the electrical energy is transmitted to the port side electric drive module 7 through the high voltage distribution box.

[0067] The motor controller receives commands from the control panel, drives the motor to rotate, and drives the propeller to rotate through the gearbox and stern shaft, thus starting the ship's movement.

[0068] 2. Normal driving phase

[0069] The main hydrogen fuel cell module 4 has a rated output of 120kW, of which 80kW supplies the port side motor (drives the propeller), 20kW is converted into 220VAC through an inverter for domestic power supply, and the remaining 20kW is used to charge the lithium battery pack.

[0070] The auxiliary hydrogen fuel cell module 5 is in standby mode. When the main module fails, it will automatically start and take over the power supply.

[0071] The pressure and concentration sensors of hydrogen fuel storage tank 3 monitor the system in real time, and the data is transmitted to the control panel display screen via CAN bus, allowing the crew to monitor the system status in real time.

[0072] 3. Acceleration / Heavy Load Phase

[0073] When a ship needs to accelerate (such as to overtake other ships), the bridge issues an acceleration command, and the power required by the motor controller increases to 200kW.

[0074] The lithium battery and high-voltage control module 6 detects a power shortage (200kW-120kW=80kW) and immediately starts discharging the lithium battery to provide power in conjunction with the fuel cell.

[0075] The dual power supply outputs together to meet peak power requirements. After acceleration is complete, the lithium battery stops discharging and resumes charging.

[0076] 4. Shutdown Phase

[0077] The crew operated the stop button on the control panel, which stopped the fuel cell from supplying hydrogen, and the stack gradually depressurized.

[0078] The system initiates a nitrogen purging procedure to purge the fuel cell hydrogen pipeline and the inside of the stack for 5 minutes to remove residual hydrogen.

[0079] The lithium battery stops charging and discharging and enters a dormant state; the electric shut-off valve of the hydrogen fuel storage tank 3 closes, completing the shutdown.

[0080] 5. Emergency Response Mechanism

[0081] (1) Hydrogen Leakage Emergency: When the hydrogen concentration sensor detects a leak (≥1%), the following actions will be triggered immediately:

[0082] The alarm sounds and flashes, and the location of the leak is displayed on the dashboard.

[0083] The electric shut-off valve of the corresponding sub-storage tank is closed, cutting off the hydrogen supply;

[0084] Deck ventilator (Model: T35-11, air volume 10000m³) 3 ( / h) Automatically starts, accelerating hydrogen diffusion;

[0085] If the concentration continues to rise to ≥2%, the system will automatically shut down, and the crew will need to go to the site to investigate and repair the leak.

[0086] (2) Emergency response to lithium battery thermal runaway: When the fire smoke sensor alarms:

[0087] The high-voltage circuit should be immediately disconnected to prevent the electric arc from igniting;

[0088] The dry powder fire extinguishing device is activated, spraying dry powder at the fire point;

[0089] After donning protective gear, the crew used deck fire hydrants (pressure 0.6 MPa) to further extinguish the fire. The open environment facilitated the spread of extinguishing agents and controlled the fire.

[0090] (3) Emergency response to power system failure: In case of failure of main hydrogen fuel cell module 4:

[0091] The auxiliary hydrogen fuel cell module 5 starts automatically within 3 seconds and takes over the power supply;

[0092] If all fuel cells fail, the lithium battery will immediately switch to the main power source to ensure the ship sails at low speed to a safe area.

[0093] When one electric drive module fails, the other module continues to operate, allowing the ship to maintain straight-line navigation and reducing the risk of loss of control.

[0094] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A novel hydrogen powered modular electric drive vessel, characterized in that, It includes a driver's cab (1), a cargo compartment (2), a hydrogen fuel storage tank (3), a main hydrogen fuel cell module (4), an auxiliary hydrogen fuel cell module (5), a lithium battery and high-voltage control module (6), an electric drive module (7), and a cabin; The bridge (1) is located at the bow, the cargo hold (2) is located in the middle section of the ship, the hydrogen fuel storage tank (3), the main hydrogen fuel cell module (4), the auxiliary hydrogen fuel cell module (5), the lithium battery and the high voltage control module (6) are all located on the open deck, the electric drive module (7) is located in the engine room, and the drive motor of the electric drive module (7) is connected to the stern shaft. The hydrogen fuel storage tank (3) is connected to the main hydrogen fuel cell module (4) and the auxiliary hydrogen fuel cell module (5) through piping. The main hydrogen fuel cell module (4) and the auxiliary hydrogen fuel cell module (5) are connected to the electric drive module (7), the lithium battery and the high voltage control module (6) through cables. The lithium battery and the high voltage control module (6) are connected to the electric drive module (7) through cables.

2. The novel hydrogen powered modular electric drive vessel of claim 1, wherein, The hydrogen fuel storage tank (3) includes at least two sub-tank groups, each sub-tank group containing at least four independent sub-tanks, and also includes a hydrogen supply pipeline, a pressure sensor, a hydrogen concentration detection sensor and an alarm; the pressure sensor is located in the hydrogen supply pipeline, the hydrogen concentration detection sensor is located at the upper end of the gas supply side of the sub-tank, and the alarm is located on the side of the hydrogen fuel storage tank (3) facing the bow.

3. The novel hydrogen powered modular electric drive vessel of claim 1, wherein, The main hydrogen fuel cell module (4) and the auxiliary hydrogen fuel cell module (5) have the same structure, both including a hydrogen fuel cell, an inlet pipe system, a hydrogen concentration detection sensor, an air intake system and a cooling system; the cooling system includes a main water path and an auxiliary water path, the main water path is connected to the main radiator in the engine compartment, and the auxiliary water path is connected to the auxiliary radiator in the engine compartment.

4. The novel hydrogen powered modular electric drive vessel of claim 3, wherein, The main hydrogen fuel cell module (4) and the auxiliary hydrogen fuel cell module (5) are equipped with hydrogen concentration detection sensors at their exhaust ports, and the hydrogen concentration detection sensors are electrically connected to an alarm.

5. The novel hydrogen-powered modular electric propulsion ship according to claim 1, characterized in that, The lithium battery and high-voltage control module (6) includes at least two lithium battery packs, a battery management system, at least two high-voltage distribution boxes, at least two DC-to-AC inverters and one high-voltage-to-low-voltage frequency converter; the lithium battery packs are connected to the high-voltage distribution boxes, and the high-voltage distribution boxes are connected to the inverters and the power drive module (7) respectively.

6. The novel hydrogen-powered modular electric propulsion ship according to claim 5, characterized in that, The lithium battery and high-voltage control module (6) also includes a fire smoke sensor, which is configured in correspondence with the lithium battery pack.

7. The novel hydrogen-powered modular electric propulsion ship according to claim 1, characterized in that, The electric drive module (7) includes a motor, a motor controller, a cooling system and a mechanical connector; the motor is connected to the stern shaft through the mechanical connector, and the cooling system includes an electric drive cooling circulation pump, a heat exchanger and is connected to the cooling pipes in the engine room.

8. The novel hydrogen-powered modular electric propulsion ship according to claim 1, characterized in that, The electric drive module (7) includes a port electric drive module and a starboard electric drive module. The port electric drive module is connected to the main hydrogen fuel cell module (4), and the starboard electric drive module is connected to the auxiliary hydrogen fuel cell module (5).

9. The novel hydrogen-powered modular electric propulsion ship according to claim 1, characterized in that, The hydrogen fuel storage tank (3), main hydrogen fuel cell module (4), auxiliary hydrogen fuel cell module (5), lithium battery and high-voltage control module (6) are all fixed to the open deck by through-hole installation.

10. The novel hydrogen-powered modular electric propulsion ship according to claim 1, characterized in that, The bridge (1) is equipped with a control console and a living area, and the distance between the bridge (1) and the hydrogen fuel storage tank (3) is not less than 1 / 3 of the total length of the ship.

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