Battery cabin top cabin door of an electric ship, electric ship and battery replacement method thereof

Abstract

The application provides a battery cabin top cabin door of an electric ship, the electric ship and a battery replacement method thereof, relates to the technical field of the electric ship with battery replacement, and comprises two supports, the two supports are oppositely arranged above the battery cabin, and the mutually close sides of the two supports are sequentially provided with a lower guide rail and an upper guide rail from bottom to top. Two frames, the two ends of the two frames are respectively connected with the lower guide rail and the upper guide rail through a lower sliding block and an upper sliding block; two cabin door bodies, the two cabin door bodies are connected with the two frames through a first lifting mechanism and a second lifting mechanism, and the two cabin door bodies can be arranged on the hatch of the top of the battery cabin; two driving mechanisms, the two driving mechanisms are connected with the two frames respectively, and can drive the two frames to slide along the lower guide rail and the upper guide rail respectively; the problem that the conventional cabin door for ships in the prior art cannot meet the new battery replacement and sealing requirements is solved.

Description

Technical Field

[0001] This invention belongs to the field of electric ship technology with battery swapping, and more specifically, relates to a battery compartment top hatch of an electric ship, an electric ship and a battery swapping method thereof. Background Technology

[0002] During battery swapping on an electric vessel, a hatch needs to be installed on top of the battery compartment. The hatch needs to be opened during swapping and closed during normal operation. To meet regulatory requirements, the hatch must meet A0 fire resistance rating, thermal insulation, and weatherproofing requirements. Currently, standard hatches in the shipbuilding industry are standardized swing doors and hatch roller doors. Considering the limited space on the stern deck and the necessity of the battery compartment top hatch, traditional marine hatches cannot meet the above-mentioned operational requirements. To meet both the battery swapping function and regulatory sealing requirements, a top hatch for the battery compartment of an electric vessel needs to be developed to suit the above-mentioned application conditions. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a battery compartment top door for electric ships, an electric ship, and a battery swapping method therewith, thus solving the problem that traditional marine doors in the prior art cannot meet the new requirements for battery swapping and sealing.

[0004] To achieve the above objectives, the present invention provides a top hatch for the battery compartment of an electric vessel, comprising: Two brackets are arranged opposite each other above the battery compartment, and the lower guide rail and the upper guide rail are arranged sequentially from bottom to top on the sides of the two brackets that are close to each other. Two frames, with their ends respectively connected to the lower guide rail and the upper guide rail via a lower slider and an upper slider; Two hatch bodies are connected to the two frames respectively via a first lifting mechanism and a second lifting mechanism. The two hatch bodies can cover the hatch opening on the top of the battery compartment. Two drive mechanisms are respectively connected to the two frames and can drive the two frames to slide along the lower guide rail and the upper guide rail respectively.

[0005] Optionally, a vertical partition is provided in the middle of the battery compartment to divide the battery compartment into two compartments. The two door bodies respectively cooperate with the two compartments. The top of the two compartments is provided with flange rings, and the lower side of the two door bodies is provided with sealing rings that cooperate with the flange rings.

[0006] Optionally, the two frames are a lower frame and an upper frame, and the two door bodies are a lower door body and an upper door body. The first lifting mechanism includes: A first base plate is connected to the lower frame. The first base plate is provided with a vertical first guide hole and a horizontal first slide rail. The first carriage is slidably engaged with the first slide rail via a first slider, and the first carriage is provided with a first lifting component; The first lifting beam has a first lifting column connected to both ends. The first lifting column slides through the first guide hole and is connected to the lower hatch body. The lower side of the first lifting beam is provided with a first lifting component that cooperates with the first lifting component. A first pushing mechanism is connected to the lower frame and the first carriage, and is used to push the first carriage to slide along the first slide rail.

[0007] Optionally, the first actuation mechanism includes: A first operating handle, the middle part of which is rotatably connected to the lower frame, and one end of which forms a first operating end; A first connecting rod, one end of which is connected to the other end of the first operating handle, and the other end of the first connecting rod is rotatably connected to a first sliding connector, which is slidably connected to the first carriage.

[0008] Optionally, the second lifting mechanism includes: The second base plate is connected to the upper frame, and the second base plate is provided with a vertical second guide hole and a horizontal second slide rail; The second carriage is slidably engaged with the second slide rail via a second slider, and the second carriage is provided with a second lifting component; The second lifting beam has a second lifting column connected to both ends. The second lifting column slides through the second guide hole and is connected to the upper door body. The lower side of the second lifting beam is provided with a second lifting component that cooperates with the second lifting component. The second pushing mechanism is connected to the upper frame and the second carriage, and is used to push the second carriage to slide along the second slide rail.

[0009] Optionally, the second actuation mechanism includes: The second operating handle is rotatably connected to the upper frame at its middle part, and one end of the second operating handle forms a second operating end. The second link has one end connected to the other end of the second operating handle, and the other end of the second link is rotatably connected to a second sliding connector, which is slidably connected to the second carriage.

[0010] Optionally, the first lifting component and the second lifting component are respectively a first wedge and a second wedge, the slope of the second wedge is greater than the slope of the first wedge, and the first lifted component and the second lifted component are respectively a first roller and a second roller.

[0011] Optionally, the two driving mechanisms are a lower driving mechanism and an upper driving mechanism, wherein the lower driving mechanism includes: A first rotating shaft is rotatably disposed on one end face of the battery compartment near the lower guide rail, and a first drive sprocket is respectively disposed at both ends of the first rotating shaft; Two first driven sprockets are disposed at the other end of the lower guide rail; Two first chains, each first chain cooperating with the first driving sprocket and the first driven sprocket, bypassing the first guide sprocket, and connected to the lower frame; The upper drive mechanism includes: The second rotating shaft is rotatably disposed on the other end face of the battery compartment and near one end of the upper guide rail. A second drive sprocket is respectively disposed at each end of the second rotating shaft. Two second driven sprockets are disposed at the other end of the upper guide rail; Two second chains, which cooperate with the second driving sprocket and the second driven sprocket, bypass the second guide sprocket, and are connected to the upper frame.

[0012] The present invention also provides an electric vessel, comprising: The ship body has a battery compartment at its stern, with one part of the battery compartment located on the lower side of the deck and the other part located on the upper side of the deck. The aforementioned electric vessel's battery compartment top hatch.

[0013] The present invention also provides a battery swapping method for electric ships, based on the above-mentioned electric ships, comprising: The two hatch bodies are raised by the first and second lifting mechanisms, and the two hatch bodies are brought close to the lower guide rail and the upper guide rail respectively, and are vertically offset from each other. A frame is moved by a drive mechanism, causing the two door bodies to stack and opening part of the battery compartment hatch, and allowing for partial battery swapping. Two drive mechanisms move two frames, causing the two door bodies to stack and open another part of the battery compartment, allowing for the swapping of another part of the batteries. Another frame is moved by another drive mechanism, so that the two hatch bodies are respectively located at both ends of the hatch. The two hatch bodies are lowered by the first and second lifting mechanisms and then covered by the two hatch bodies.

[0014] This invention provides a top hatch for the battery compartment of an electric vessel, the electric vessel itself, and a battery swapping method thereof. Its advantages lie in the following: The top hatch for the battery compartment of the electric vessel has two supports positioned opposite each other above the side walls of the battery compartment and fixedly connected to the battery compartment. Two sliding spaces are formed between the two supports, corresponding to a pair of lower guide rails and a pair of upper guide rails respectively. The two frames are slidably positioned within the two sliding spaces through cooperation with the lower and upper guide rails, enabling the two hatch bodies to slide. This allows the two hatch bodies to slide and form a vertically stacked state, minimizing the planar space after lateral movement, and thus also enabling… Currently, each time half of the hatch is opened, the two hatch bodies can be raised and lowered independently by the first and second lifting mechanisms. The two hatch bodies can be raised to a state where one hatch body corresponds to the lower guide rail and the other hatch body corresponds to the upper guide rail. When the two frames move horizontally, the two hatch bodies are staggered vertically without mechanical interference. This does not affect the movement of the two drive mechanisms on the two frames and the movement of the hatch bodies. This allows for the opening of half of the hatch for battery swapping each time. It also allows the battery compartment to be closed by lowering the two hatch bodies after battery swapping, thus meeting protection requirements.

[0015] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0017] Figure 1 A schematic diagram of the closed state of the top hatch of the battery compartment of an electric ship according to an embodiment of the present invention is shown.

[0018] Figure 2 A schematic diagram of the battery compartment top door of an electric ship in an open state is shown according to an embodiment of the present invention.

[0019] Figure 3 A schematic diagram of a door body of a battery compartment top hatch of an electric ship according to an embodiment of the present invention is shown.

[0020] Figure 4 A partial schematic diagram of a door body of a battery compartment top hatch of an electric ship according to an embodiment of the present invention is shown.

[0021] Figure 5 A side view structural schematic diagram of an electric ship according to an embodiment of the present invention is shown.

[0022] Figure 6 A top view of an electric ship according to an embodiment of the present invention is shown.

[0023] Figure 7 It shows Figure 5 A partial schematic diagram.

[0024] Figure 8 It shows Figure 6 A partial schematic diagram.

[0025] Figure 9 A flowchart of a battery swapping method for an electric ship according to an embodiment of the present invention is shown.

[0026] Explanation of reference numerals in the attached figures: 1. Support frame; 2. Lower guide rail; 3. Upper guide rail; 4. First lifting mechanism; 5. Second lifting mechanism; 6. Drive mechanism; 7. Flange ring; 8. Sealing ring; 9. Lower frame; 10. Upper frame; 11. Lower hatch body; 12. Upper hatch body; 13. First base plate; 14. First slide rail; 15. First slide frame; 16. First lifting component; 17. First lifting beam; 18. First lifting column; 19. First lifted component; 20. First pushing mechanism; 21. First guide component; 22. First operating handle; 23. First connecting rod; 24. First sliding connector; 25. First compartment; 26. Second compartment. Detailed Implementation

[0027] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0028] like Figures 1 to 3 As shown, the present invention provides a top hatch for the battery compartment of an electric ship, comprising: Two brackets 1 are positioned opposite each other above the battery compartment. The lower guide rail 2 and the upper guide rail 3 are arranged sequentially from bottom to top on the sides of the two brackets 1 that are close to each other. Two frames, with their ends slidingly engaged with the lower guide rail 2 and the upper guide rail 3 via a lower slider and an upper slider, respectively; The two hatch bodies are connected to the two frames respectively through the first lifting mechanism 4 and the second lifting mechanism 5. The two hatch bodies can cover the hatch on the top of the battery compartment. Two drive mechanisms 6 are connected to two frames respectively, and can drive the two frames to slide along the lower guide rail 2 and the upper guide rail 3 respectively.

[0029] Specifically, to address the problem that traditional marine hatches in the prior art cannot meet the new requirements for battery swapping and sealing, the battery compartment top hatch of the electric ship provided by this invention has two brackets 1 positioned opposite each other above the two side bulkheads of the battery compartment and fixedly connected to the battery compartment. Two sliding spaces are formed between the two brackets 1, corresponding to a pair of lower guide rails 2 and a pair of upper guide rails 3 respectively. The two frames are slidably positioned within the two sliding spaces through cooperation with the lower guide rails 2 and the upper guide rails 3, enabling the two hatch bodies to slide, thereby allowing the two hatch bodies to slide and form a vertically stacked state, ensuring that the planar space after lateral movement is minimized, and thus also enabling… To achieve the opening of half of the hatch each time, the first lifting mechanism 4 and the second lifting mechanism 5 allow the two hatch bodies to rise and fall independently, raising them to a state where one hatch body aligns with the lower guide rail 2 and the other with the upper guide rail 3. When the two frames move horizontally, the two hatch bodies are staggered vertically without mechanical interference, and this does not affect the movement of the two drive mechanisms 6 on the two frames and the movement of the hatch bodies. This allows for opening half of the hatch each time for battery swapping, and also allows the battery compartment to be closed by lowering the two hatch bodies after battery swapping, thus meeting protection requirements.

[0030] Optionally, a vertical partition is provided in the middle of the battery compartment to divide the battery compartment into two compartments. The two door bodies cooperate with the two compartments respectively. The top of the two compartments is provided with flange rings 7, and the lower side of the two door bodies is provided with sealing rings 8 that cooperate with flange rings 7.

[0031] Specifically, the partition divides the battery compartment into two chambers, each capable of holding a set number of batteries. Two separate doors each seal one chamber, and the doors can be moved to open one of them. This layered opening mechanism avoids encroaching on other spaces, reducing space requirements. Regarding the need for chamber sealing, such as… Figure 4 As shown, a sealing ring 8 is provided on the lower side of the hatch body, and a flange ring 7 is provided on the top of the compartment. The sealing ring 8 is pressed by the flange ring 7 to ensure the sealing performance of the compartment when the hatch body is closed.

[0032] Furthermore, to meet the 6.A0 fireproof separation and thermal insulation requirements, fireproof separation is achieved through the metal door body, and thermal insulation is achieved by filling the inside of the door body with heat-resistant insulation materials such as rock wool, reducing the heat conduction between the battery compartment and the external environment.

[0033] Optionally, the two frames are a lower frame 9 and an upper frame 10, and the two hatch bodies are a lower hatch body 11 and an upper hatch body 12. The first lifting mechanism 4 includes: The first base plate 13 is connected to the lower frame 9. The first base plate 13 is provided with a vertical first guide hole and a horizontal first slide rail 14. The first slide 15 is slidably engaged with the first slide rail 14 via a first slider, and the first slide 15 is provided with a first lifting component 16. The first lifting beam 17 has a first lifting column 18 connected to both ends. The first lifting column 18 slides through the first guide hole and is connected to the lower hatch body 11. The lower side of the first lifting beam 17 is provided with a first lifted component 19 that cooperates with the first lifting component 16. The first pushing mechanism 20 is connected to the lower frame 9 and the first carriage 15, and is used to push the first carriage 15 to slide along the first slide rail 14.

[0034] Specifically, the first lifting component 16 slides along the first slide 15 pushed by the first pushing mechanism 20. The sliding direction is along the extension direction of the lower guide rail 2 and the upper guide rail 3. The movement of the first lifting component 16 pushes against the first lifted component 19, so that the first lifted component 19 and the first lifting beam 17 can rise. The first lifting column 18 slides in the first guide hole, driving the lower hatch body 11 to rise.

[0035] In this embodiment, four first base plates 13 are provided, two first lifting beams 17 are provided, a first guide member 21 is provided on the first base plate 13, and a first guide hole is provided in the first guide member 21.

[0036] Optionally, the first propulsion mechanism 20 includes: The first operating handle 22 is rotatably connected to the lower frame 9 at its middle part, and one end of the first operating handle 22 forms the first operating end. The first link 23 has one end connected to the other end of the first operating handle 22, and the other end of the first link 23 is rotatably connected to the first sliding connector 24, which is slidably connected to the first carriage 15.

[0037] Specifically, the first sliding connector 24 can be a block-shaped component with a groove on the top. It cooperates with the first slide 15 through the groove. When the first operating handle 22 is rotated, it drives the first connecting rod 23 to run. By changing the angle between the other end of the first operating handle 22 and the first connecting rod 23, the first slide 15 can move horizontally. The first slide 15 is guided by the first slide rail 14, which enables it to drive the first lifting component 16 to move linearly.

[0038] Furthermore, the first pushing mechanism 20 and the first lifting block form a dual force-saving design, which can reduce the power required for operation and enable manual operation.

[0039] In this embodiment, the first operating end is used for manual gripping and operation, rotating the first operating handle 22. In other embodiments, the first operating handle 22 can also be electrically driven, using a telescopic component or a rotation drive component to drive the first operating handle 22 to rotate.

[0040] Optionally, the second lifting mechanism 5 includes: The second base plate is connected to the upper frame 10. The second base plate is provided with a vertical second guide hole and a horizontal second slide rail. The second carriage is slidably engaged with the second slide rail via a second slider, and the second carriage is equipped with a second lifting component. The second lifting beam has a second lifting column connected to both ends. The second lifting column slides through the second guide hole and is connected to the upper hatch body 12. The lower side of the second lifting beam is provided with a second lifting component that cooperates with the second lifting component. The second pushing mechanism is connected to the upper frame 10 and the second carriage, and is used to push the second carriage to slide along the second slide rail.

[0041] Specifically, the lifting principle of the second lifting mechanism 5 is the same as that of the first lifting mechanism 4.

[0042] Optionally, the second propulsion mechanism includes: The second operating handle is rotatably connected to the upper frame 10 at its middle part, and one end of the second operating handle forms the second operating end. The second link has one end connected to the other end of the second operating handle, and the other end of the second link is rotatably connected to a second sliding connector, which is slidably connected to the second carriage.

[0043] Specifically, the propulsion principle of the second propulsion mechanism is the same as that of the first propulsion mechanism 20.

[0044] Optionally, the first lifting component 16 and the second lifting component are respectively a first wedge and a second wedge, the slope of the second wedge is greater than the slope of the first wedge, and the first lifted component 19 and the second lifted component are respectively a first roller and a second roller.

[0045] Specifically, the difference between the second lifting mechanism 5 and the first lifting mechanism 4 is that the second lifting mechanism 5 has a larger lifting range for the upper hatch body 12. It can both raise the upper hatch body 12 above the lower hatch body 11 in the raised state and lower the upper hatch body 12 to the upper side of the hatch and form a seal. Therefore, the slope of the second wedge is steeper to provide a larger lifting stroke for the upper hatch body 12.

[0046] Optionally, the two drive mechanisms 6 are a lower drive mechanism 6 and an upper drive mechanism 6, and the lower drive mechanism 6 includes: The first rotating shaft is rotatably mounted on one end face of the battery compartment near the lower guide rail 2, and a first drive sprocket is provided at each end of the first rotating shaft; Two first driven sprockets are located at the other end of the lower guide rail 2; Two first chains, each first chain engaging with a first driving sprocket and a first driven sprocket, passing around a first guide sprocket, and connected to the lower frame 9; The upper drive mechanism 6 includes: The second rotating shaft is rotatably mounted on the other end face of the battery compartment and close to one end of the upper guide rail 3. A second drive sprocket is respectively mounted on both ends of the second rotating shaft. Two second driven sprockets are located at the other end of the upper guide rail 3; Two second chains are provided, which engage with the second driving sprocket and the second driven sprocket, bypass the second guide sprocket, and are connected to the upper frame 10.

[0047] Specifically, both drive mechanisms 6 are driven by chains to make the two frames slide, thereby realizing the horizontal movement of the two hatch bodies.

[0048] In this embodiment, the first rotating shaft and the second rotating shaft are driven by the first motor and the second motor respectively. The first motor and the second motor can also drive the first rotating shaft and the second rotating shaft to rotate through chain drive. The first motor and the second motor can be the first variable frequency motor and the second variable frequency motor. The bracket 1 can be guided by heavy-duty KBK roller guide rail, with the upper and lower layers driven and guided separately.

[0049] like Figures 5 to 8 As shown, the present invention also provides an electric boat, comprising: The ship's hull has a battery compartment at its stern, with one part of the battery compartment located on the lower side of the deck and the other part located on the upper side of the deck. The aforementioned electric vessel's battery compartment top hatch.

[0050] Specifically, the battery compartment is located at the stern and is semi-submerged. The batteries are distributed in two compartments and are covered by two hatches.

[0051] In this embodiment, the battery compartment is lowered by 1628mm below the deck and 982mm above the deck; each compartment contains 3 batteries.

[0052] like Figure 9 As shown, the present invention also provides a battery swapping method for electric ships, based on the above-mentioned electric ships, comprising: The two hatch bodies are lifted by the first lifting mechanism 4 and the second lifting mechanism 5, and the two hatch bodies are respectively close to the lower guide rail 2 and the upper guide rail 3, and are vertically offset from each other. A drive mechanism 6 drives a frame to move, causing the two door bodies to stack and open part of the battery compartment hatch, and perform part of the battery swapping. Two drive mechanisms 6 drive two frames to move, causing the two door bodies to stack and open another part of the battery compartment, and to perform another part of battery swapping. Another drive mechanism 6 moves another frame, so that the two hatch bodies are respectively located at both ends of the hatch. The two hatch bodies are lowered by the first lifting mechanism 4 and the second lifting mechanism 5, and the hatch openings are covered by the two hatch bodies.

[0053] Specifically, based on electric ships with the aforementioned battery compartment top hatch, this method proposes a new battery swapping approach. When standard marine hatches do not meet the operational requirements, a non-standard design is used to customize the battery compartment top hatch, technically solving the special requirements of the battery swapping mode for the battery compartment door, and making a technical contribution to opening up the application of the battery swapping mode on electric ships.

[0054] In this embodiment, before the hatch body moves laterally, the first operating handle 22 and the second operating handle must be manually rotated respectively to raise the two hatch bodies. Then, the first motor and the second motor are started to move the lower hatch body 11 laterally to below the upper hatch body 12, opening the first compartment 25. Then, the first compartment 25 begins power swapping. After power swapping is completed, the first motor and the second motor are started to move the two hatch bodies laterally back above the first compartment 25. After that, the second compartment 26 begins power swapping. After power swapping is completed, the second motor is started to move the upper hatch body 12 laterally back above the second compartment 26. Finally, the first operating handle 22 and the second operating handle are manually rotated to lower the two hatch bodies respectively, pressing the flange ring 7 on the top of the battery compartment to achieve a weathertight seal.

[0055] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A top hatch for the battery compartment of an electric ship, characterized in that, include: Two brackets are arranged opposite each other above the battery compartment, and the lower guide rail and upper guide rail are arranged sequentially from bottom to top on the sides of the two brackets that are close to each other. Two frames, with their ends respectively connected to the lower guide rail and the upper guide rail via a lower slider and an upper slider; Two hatch bodies are connected to the two frames respectively via a first lifting mechanism and a second lifting mechanism. The two hatch bodies can cover the hatch opening on the top of the battery compartment. Two drive mechanisms are respectively connected to the two frames and can drive the two frames to slide along the lower guide rail and the upper guide rail respectively.

2. The battery compartment top hatch of the electric ship according to claim 1, characterized in that, A vertical partition is provided in the middle of the battery compartment, dividing the battery compartment into two compartments. The two door bodies respectively cooperate with the two compartments. The top of the two compartments is provided with flange rings, and the lower side of the two door bodies is provided with sealing rings that cooperate with the flange rings.

3. The top hatch of the battery compartment of the electric ship according to claim 1, characterized in that, The two frames are a lower frame and an upper frame, and the two door bodies are a lower door body and an upper door body. The first lifting mechanism includes: A first base plate, which is connected to the lower frame, is provided with a vertical first guide hole and a horizontal first slide rail; The first carriage is slidably engaged with the first slide rail via a first slider, and the first carriage is provided with a first lifting component; The first lifting beam has a first lifting column connected to both ends. The first lifting column slides through the first guide hole and is connected to the lower hatch body. The lower side of the first lifting beam is provided with a first lifting component that cooperates with the first lifting component. A first pushing mechanism is connected to the lower frame and the first carriage, and is used to push the first carriage to slide along the first slide rail.

4. The battery compartment top hatch of the electric ship according to claim 3, characterized in that, The first propulsion mechanism includes: A first operating handle, the middle part of which is rotatably connected to the lower frame, and one end of which forms a first operating end; A first connecting rod, one end of which is connected to the other end of the first operating handle, and the other end of the first connecting rod is rotatably connected to a first sliding connector, which is slidably connected to the first carriage.

5. The top hatch of the battery compartment of the electric ship according to claim 3, characterized in that, The second lifting mechanism includes: The second base plate is connected to the upper frame, and the second base plate is provided with a vertical second guide hole and a horizontal second slide rail; The second carriage is slidably engaged with the second slide rail via a second slider, and the second carriage is provided with a second lifting component; The second lifting beam has a second lifting column connected to both ends. The second lifting column slides through the second guide hole and is connected to the upper door body. The lower side of the second lifting beam is provided with a second lifting component that cooperates with the second lifting component. The second pushing mechanism is connected to the upper frame and the second carriage, and is used to push the second carriage to slide along the second slide rail.

6. The battery compartment top hatch of the electric ship according to claim 5, characterized in that, The second propulsion mechanism includes: The second operating handle is rotatably connected to the upper frame at its middle part, and one end of the second operating handle forms a second operating end. The second link has one end connected to the other end of the second operating handle, and the other end of the second link is rotatably connected to a second sliding connector, which is slidably connected to the second carriage.

7. The battery compartment top hatch of the electric ship according to claim 5, characterized in that, The first lifting component and the second lifting component are respectively a first wedge and a second wedge, the slope of the second wedge is greater than the slope of the first wedge, and the first lifted component and the second lifted component are respectively a first roller and a second roller.

8. The top hatch of the battery compartment of the electric ship according to claim 1, characterized in that, The two drive mechanisms are a lower drive mechanism and an upper drive mechanism, wherein the lower drive mechanism includes: A first rotating shaft is rotatably disposed on one end face of the battery compartment near the lower guide rail, and a first drive sprocket is respectively disposed at each end of the first rotating shaft; Two first driven sprockets are disposed at the other end of the lower guide rail; Two first chains, each first chain cooperating with the first driving sprocket and the first driven sprocket, bypassing the first guide sprocket, and connected to the lower frame; The upper drive mechanism includes: The second rotating shaft is rotatably disposed on the other end face of the battery compartment and near one end of the upper guide rail. A second drive sprocket is respectively disposed at each end of the second rotating shaft. Two second driven sprockets are disposed at the other end of the upper guide rail; Two second chains, which cooperate with the second driving sprocket and the second driven sprocket, bypass the second guide sprocket, and are connected to the upper frame.

9. An electric vessel, characterized in that, include: The ship's hull has a battery compartment at its stern, with one part of the battery compartment located on the lower side of the deck and the other part located on the upper side of the deck. The battery compartment top hatch of the electric vessel according to any one of claims 1-8.

10. A battery swapping method for an electric vessel, based on the electric vessel of claim 9, characterized in that, include: The two hatch bodies are raised by the first and second lifting mechanisms, and the two hatch bodies are brought close to the lower guide rail and the upper guide rail respectively, and are vertically offset from each other. A frame is moved by a drive mechanism, causing the two door bodies to stack and opening part of the battery compartment hatch, and a part of the battery is swapped. Two drive mechanisms move two frames, causing the two door bodies to stack and open another part of the battery compartment, allowing for the swapping of another part of the batteries. Another frame is moved by another drive mechanism, so that the two hatch bodies are respectively located at both ends of the hatch. The two hatch bodies are lowered by the first and second lifting mechanisms and then covered by the two hatch bodies.

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