A pull-out type marine battery stack structure

Abstract

The application discloses a pull-out type marine battery stacking structure, which comprises a plurality of marine battery stacks which are stacked and spliced side by side, wherein the marine battery stack comprises a plurality of vertically stacked marine battery modules, the marine battery module comprises a shell, the top surface left and right edges of the shell are concave downward to form a front and rear through groove respectively, the bottom surface left and right edges of the shell are convex upward to form a convex strip with the same length as the shell respectively, and the convex strips on the same side are matched with the grooves to form a mortise and tenon structure. The mortise and tenon structure between the marine battery modules replaces the traditional intermediate support, eliminates the occupation of the thickness and volume of the support on the longitudinal space, and significantly increases the number of batteries that can be accommodated in the marine power room, directly improves the battery capacity of the ship, and further prolongs the endurance.

Description

Technical Field

[0001] This invention relates to the field of marine battery technology, specifically to a pull-out marine battery stacking structure. Background Technology

[0002] Currently, most commercial ships rely primarily on heavy fuel oil as fuel, and their electrical systems also depend mainly on the combustion of heavy fuel oil for power. However, the combustion of heavy fuel oil produces pollutants such as aromatic cyclic chemicals and carbon dioxide, which pose significant risks to the environment and human health. Furthermore, heavy fuel oil is viscous and non-volatile, meaning that leaks on ships would severely threaten the marine environment. Considering these factors, and in order to conserve resources, protect the environment, and promote sustainable development, new energy ships are increasingly being widely adopted. For example, ships powered by batteries typically use high-performance batteries, such as lithium-ion or nickel-metal hydride batteries, to provide electricity. Compared to traditional fuel-powered ships, battery-powered ships offer advantages such as zero emissions, low noise, and low energy consumption, making them a more environmentally friendly and energy-efficient type of vessel.

[0003] Currently, the industry commonly uses a stacked installation method to install marine batteries in the ship's power room. Because ships are constantly in a dynamic state of motion during navigation due to factors such as wave impact and hull pitching, an intermediate support is added between the stacked marine batteries to firmly fix them in place, forming a stable overall structure. This counteracts the external forces caused by the swaying and ensures the positional stability of the battery pack under various navigation conditions.

[0004] However, the placement of the intermediate support frame introduces new problems: the frame itself has a certain thickness and volume, inevitably occupying longitudinal space in the stacking direction. Within the limited vertical height of the ship's power room, this space occupation directly compresses the effective area available for placing battery cells. Specifically, due to the additional height occupied by the intermediate support frame, the number of batteries that can be accommodated in each battery stack is significantly reduced, thus limiting the ship's range. Summary of the Invention

[0005] In order to overcome the problem that the number of batteries in each stack is small due to the setting of intermediate supports when stacking marine batteries in the prior art, the present invention provides a pull-out marine battery stacking structure.

[0006] The technical solution of this invention is as follows:

[0007] A pull-out marine battery stacking structure includes several stacked marine battery stacks. Each marine battery stack includes multiple vertically stacked marine battery modules. Each marine battery module includes a shell. The top surface of the shell has recessed left and right edges to form a through groove. The bottom surface of the shell has protruding left and right edges to form a ridge with the same length as the shell. The ridges on the same side cooperate with the grooves to form a tenon and mortise structure.

[0008] As a preferred embodiment of the present invention, the longitudinal sections of the protrusion and the groove are both non-right-angled parallelograms or right-angled trapezoids.

[0009] In a preferred embodiment of the present invention, the inclined side of the protrusion is inclined outward, and the outward sidewall of the protrusion is provided with a plurality of first clearance grooves at intervals along its length direction. A first insertion part is formed between two adjacent first clearance grooves. The outward sidewall of the groove is provided with a plurality of second clearance grooves at intervals along its length direction that cooperate with the first insertion part. The positions of the second clearance grooves and the first clearance grooves correspond one-to-one. A second insertion part that cooperates with the first clearance groove is formed between two adjacent second clearance grooves. The longitudinal sections of the first clearance groove, the first insertion part, the second clearance groove, and the second insertion part are all right-angled triangles.

[0010] As a preferred embodiment of the present invention, the left and right outer walls of the outer casing are provided with a plurality of screw clearance grooves along their length direction. The top of the screw clearance groove is provided with a first screw hole that runs through the front and back, and the bottom of the screw clearance groove is provided with a second screw hole that runs through the front and back and mates with the first screw hole.

[0011] As a preferred embodiment of the present invention, the marine battery stack further includes a fixing bracket, and all vertically stacked marine battery modules are fixed by the fixing bracket, and two adjacent marine battery stacks are fixed by the fixing bracket.

[0012] As a preferred embodiment of the present invention, the fixing bracket includes a fixing base, two front fixing strips disposed on the left and right sides of the front end of the fixing base, and two rear fixing strips disposed on the left and right sides of the rear end of the fixing base. The top surface of the fixing base has a recessed groove on each of its left and right edges to cooperate with the protruding strip. The two front fixing strips are fixed to the fixing base and the left and right sides of the front end of all the vertically stacked marine battery modules by screws. The two rear fixing strips are fixed to the left and right sides of the rear end of all the vertically stacked marine battery modules by screws. The two adjacent front fixing strips and the two adjacent rear fixing strips are all fixed by screws.

[0013] As a preferred embodiment of the present invention, the fixed base is provided with a first fixing hole that mates with the battery mounting position of the ship's power room, and the bottom of the front fixing strip extends downward to form an extension portion lower than the bottom surface of the fixed base, and the extension portion is provided with a second fixing hole that mates with the battery mounting position of the ship's power room.

[0014] As a preferred embodiment of the present invention, the outer casing has a through-cavity, and the marine battery module further includes a cell assembly disposed in the cavity, a front panel disposed on the front side of the cavity, and a rear panel disposed on the rear side of the cavity. The cell assembly is connected to the front panel and the rear panel to form an integral unit and can slide back and forth along the cavity. The front panel is connected to the front end of the outer casing by screws.

[0015] As a preferred embodiment of the present invention, T-shaped handles can be detachably connected to both the left and right sides of the front panel.

[0016] As a preferred embodiment of the present invention, the left and right sides of the front panel are provided with pull-out bolt holes that cooperate with the T-shaped handle, and the rear end of the T-shaped handle is provided with a stud that cooperates with the pull-out bolt holes.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. By replacing the traditional intermediate support with a mortise and tenon structure between marine battery modules, the thickness and volume of the support are eliminated from occupying longitudinal space, significantly increasing the number of batteries that can be accommodated in the ship's power room. This directly improves the ship's battery capacity and extends its range, fundamentally overcoming the range limitation problem caused by the intermediate support in existing technologies. At the same time, the mortise and tenon structure achieves zero-gap fastening between marine battery modules. The modules stacked on top of each other form a whole through the precise cooperation of the protrusions and grooves, which can effectively resist the dynamic external forces such as wave impact and hull rolling during ship navigation, avoid relative displacement and collision, and ensure the positional stability of the battery pack under various navigation conditions.

[0019] 2. Through the special structural design of the protrusions and grooves, namely the first clearance groove, the first insertion part, the second clearance groove and the second insertion part, it can be installed in both horizontal and vertical directions, breaking through the limitation of the installation direction on the traditional stacking method. It can adapt to the complex irregular space in the ship's power room, improve the space utilization rate, and reflect the practicality and flexibility of industrial design.

[0020] 3. The marine battery module adopts a pull-out front maintenance design. When a battery module fails, only the screws between the front panel and the outer shell need to be removed to pull out the entire assembly consisting of the cell assembly, front panel, and rear panel along the cavity for maintenance. It is not necessary to disassemble the faulty marine battery module and all the marine battery modules above it, which greatly shortens the maintenance time and reduces the maintenance difficulty and cost.

[0021] 4. By installing a detachable T-shaped handle on the front panel, it can be installed only during maintenance, providing a stable force point for pulling out the drawer. It can be removed during normal operation, avoiding the T-shaped handle from occupying extra space or interfering with other components in the power compartment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view of a pull-out marine battery stacking structure according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a marine battery stack in one embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a marine battery module in one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the outer shell in one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the outer casing from another perspective in one embodiment of the present invention;

[0028] Figure 6 This is a front view of the outer casing in one embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure in which the battery cell assembly, the front panel, and the rear panel form an integral part in one embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram showing the state of the battery cell assembly, front panel, and rear panel being pulled out from the outer casing in one embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the fixed base in one embodiment of the present invention;

[0032] Figure 10This is a schematic diagram showing the state of the marine battery module when the T-shaped handle is removed in one embodiment of the present invention.

[0033] In the diagram,

[0034] 1. Marine battery stack; 11. Marine battery module; 111. Outer shell; 1111. Receiving cavity; 1112. Groove; 1113. Raised strip; 1114. First clearance groove; 1115. First insertion part; 1116. Second clearance groove; 1117. Second insertion part; 1118. Screw clearance groove; 1119. First screw hole; 1120. Second screw hole; 112. Cell assembly; 113. Front panel; 1131. First pull-out bolt hole; 114. Rear panel; 115. T-handle; 1151. Stud; 116. I-shaped connector; 12. Fixing bracket; 121. Fixing base; 1211. First fixing hole; 122. Front fixing strip; 1221. Extension part; 1222. Second fixing hole; 123. Rear fixing strip. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is also stated that the embodiments described below are for illustrative purposes only and are not intended to limit the invention.

[0036] It should be noted that the terms "installation," "setting," "connection," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying a number of technical features. "A plurality of" means two or more, unless otherwise explicitly defined. "Several" means one or more, unless otherwise explicitly defined.

[0037] Please see Figures 1 to 8This embodiment provides a pull-out marine battery stacking structure, including several marine battery stacks 1 stacked side by side. Each marine battery stack 1 includes multiple vertically stacked marine battery modules 11. Each marine battery module 11 includes a housing 111 with a through-cavity 1111, a cell assembly 112 disposed within the through-cavity 1111, a front panel 113 disposed at the front of the through-cavity 1111, and a rear panel 114 disposed at the rear of the through-cavity 1111. The cell assembly 112 is integrated with the front panel 113 and the rear panel 114 and can slide back and forth along the through-cavity 1111. The front panel 113 is connected to the front end of the housing 111 by screws, ensuring fixation under normal operating conditions and providing a convenient operating point for quick disassembly during maintenance. When a battery module fails, only the screws on the front panel 113 and the outer casing 111 need to be removed to pull out the entire assembly consisting of the cell assembly 112, the front panel 113, and the rear panel 114 along the receiving cavity 1111 for maintenance. This pull-out front maintenance design eliminates the need to completely disassemble the faulty marine battery module 11 and all the marine battery modules 11 above it, greatly shortening the maintenance time and reducing the difficulty and cost of maintenance.

[0038] The top surface of the outer casing 111 has recessed left and right edges, forming a through groove 1112. The bottom surface of the outer casing 111 has convex left and right edges, forming a ridge 1113 of the same length as the outer casing 111. The ridge 1113 on the same side cooperates with the groove 1112 to form a mortise and tenon structure. By replacing the traditional intermediate support with the mortise and tenon structure between the marine battery modules 11, the thickness and volume of the support are eliminated from occupying the longitudinal space. Within the limited vertical height of the ship's power room, the number of batteries that can be accommodated is significantly increased, directly improving the ship's battery capacity and thus extending the range. This fundamentally overcomes the range limitation problem caused by the intermediate support in the existing technology. At the same time, the mortise and tenon structure achieves zero-gap fastening between the marine battery modules 11. The modules stacked on top of each other are formed as a whole through the precise cooperation of the ridge 1113 and the groove 1112. This can effectively resist the dynamic external forces such as wave impact and hull turbulence during ship navigation, avoid relative displacement and collision, and ensure the positional stability of the battery pack under various navigation conditions.

[0039] Please see Figures 3 to 6In one embodiment, the longitudinal sections of both the protrusion 1113 and the groove 1112 are right-angled trapezoids. The hypotenuse of the protrusion 1113 is inclined outward. The outward sidewall of the protrusion 1113 is provided with a plurality of first clearance grooves 1114 at intervals along its length. A first insertion part 1115 is formed between two adjacent first clearance grooves 1114. The outward sidewall of the groove 1112 is provided with a plurality of second clearance grooves 1116 at intervals along its length to cooperate with the first insertion part 1115. The positions of the second clearance grooves 1116 and the first clearance grooves 1114 correspond one-to-one. A second insertion part 1117 is formed between two adjacent second clearance grooves 1116 to cooperate with the first clearance groove 1114. The longitudinal sections of the first clearance grooves 1114, the first insertion part 1115, the second clearance grooves 1116 and the second insertion part 1117 are all right-angled triangles.

[0040] In this embodiment, the special structural design of the protrusion 1113 and the groove 1112, namely the first clearance groove 1114, the first insertion part 1115, the second clearance groove 1116, and the second insertion part 1117, allows for installation in both horizontal and vertical directions. This overcomes the limitations of traditional stacking methods on the installation direction, adapts to the complex irregular spaces inside the ship's power compartment, improves space utilization, and demonstrates the practicality and flexibility of industrial design. Specifically, for horizontal installation, the protrusion 1113 of the marine battery module 11 to be installed is horizontally aligned with the groove 1112 of the marine battery module 11 already installed above it. Then, the marine battery module 11 to be installed is horizontally pushed until it is aligned with the marine battery module 11 below it. When installing vertically, first place the marine battery module 11 to be installed above the pre-installed marine battery module 11 directly above it and align it left and right. Then push the marine battery module 11 to be installed forward or backward. When the first clearance groove 1114 and the first insertion part 1115 of its protrusion 1113 are aligned with the second insertion part 1117 and the second clearance groove 1116 of the groove 1112 of the lower marine battery module 11, the marine battery module 11 to be installed will descend under the action of gravity, so that its protrusion 1113 enters the groove 1112 of the lower marine battery module 11. Finally, push the marine battery module 11 to be installed horizontally to align it with the lower marine battery module 11 front and back.

[0041] In another embodiment, the longitudinal sections of both the protrusion 1113 and the groove 1112 can be non-right-angled parallelograms. The non-right-angled parallelogram shape design of the protrusion 1113 and the groove 1112 can achieve the same effect as a right-angled trapezoid.

[0042] Please see Figures 3 to 5In one embodiment, the left and right outer walls of the outer casing 111 are provided with multiple screw clearance slots 1118 along their length. The top of each screw clearance slot 1118 has a first screw hole 1119 that extends from front to back, and the bottom of each screw clearance slot 1118 has a second screw hole 1120 that extends from front to back and mates with the first screw hole 1119. After the upper and lower marine battery modules 11 are initially fixed by the tenon and mortise structure of the protrusion 1113 and the groove 1112, they are further secured by screws engaging the second screw hole 1120 of the upper marine battery module 11 and the first screw hole 1119 of the lower marine battery module 11, forming a double fixing mode of tenon and screw. Compared to a simple tenon and mortise structure, the additional screw connection can further resist external forces such as shearing and tensile forces generated by the violent rolling of the ship, preventing loosening between modules due to long-term vibration. This is especially suitable for harsh navigation conditions (such as stormy weather), significantly improving the reliability of the overall structure. The design of the screw clearance groove 1118 provides operational space for screw installation. In practical applications, the choice between using screw reinforcement and not using screws can be made based on the severity of the ship's navigation environment: in calm waters, only the mortise and tenon structure can be relied upon to simplify installation; in complex waters, screws are used to strengthen the fixation, achieving reinforcement as needed and improving the structure's adaptability to different scenarios.

[0043] Please see Figure 1 In one embodiment, the marine battery stack 1 further includes a fixing bracket 12. All vertically stacked marine battery modules 11 are fixed by the fixing bracket 12, and two adjacent marine battery stacks 1 are also fixed by the fixing bracket 12. The fixing bracket 12 integrates all vertically stacked marine battery modules 11 into a rigid whole, preventing individual battery stacks from displacing independently due to swaying. At the same time, adjacent battery stacks are connected by the fixing bracket 12, so that multiple parallel battery stacks form a continuous structure, dispersing the external force caused by ship swaying, reducing the stress load on individual modules, and improving the impact resistance of the entire battery system.

[0044] For further details, please refer to Figure 2 , Figure 9The fixing bracket 12 includes a fixing base 121, two front fixing strips 122 located on the left and right sides of the front end of the fixing base 121, and two rear fixing strips 123 located on the left and right sides of the rear end of the fixing base 121. The top surface of the fixing base 121 has recessed left and right edges, each forming a groove 1112 that mates with a protrusion 1113. This groove 1112 mates with the protrusion 1113 of the bottommost marine battery module 11, forming a bottom tenon-and-mortise fixation to prevent the battery stack from sliding left and right. The two front fixing strips 122 are fixed to the fixing base 121 and the left and right sides of the front end of all the vertically stacked marine battery modules 11 respectively with screws. The two rear fixing strips 123 are fixed to the left and right sides of the rear end of all the vertically stacked marine battery modules 11 with screws, forming a longitudinal constraint that clamps the battery stack from front to back, resisting the ship's forward and backward swaying (such as the ship's forward and backward rocking caused by wave impact) and preventing the battery stack from tilting forward or backward. In addition, the two adjacent front fixing bars 122 and the two adjacent rear fixing bars 123 are all fixed with screws, so that the side-by-side battery stacks form a horizontal rigid connection through the bracket, which transfers the force of multiple battery stacks to the entire bracket system, further dispersing the external force, and is suitable for scenarios where multiple battery stacks are used for power supply in large ships.

[0045] For further details, please refer to Figure 2 , Figure 9 The fixed base 121 has a first fixing hole 1211 that mates with the battery mounting position in the ship's power room. The bottom of the front fixing bar 122 extends downward to form an extension 1221 that is lower than the bottom surface of the fixed base 121. The extension 1221 has a second fixing hole 1222 that mates with the battery mounting position in the ship's power room. The first fixing hole 1211 of the fixed base 121 mates with the ship mounting position to fix the bottom of the battery stack to the hull and prevent the battery stack from sliding laterally or longitudinally. The second fixing hole 1222 of the extension 1221 of the front fixing bar 122 is lower than the bottom surface of the fixed base 121 and forms a double fixing after connecting with the hull mounting position, resisting the vertical jump of the battery stack caused by shaking (such as the up-and-down rolling of the hull), and ensuring that the entire battery system is integrated with the hull.

[0046] Please see Figure 3In one embodiment, T-shaped handles 115 are detachably connected to both the left and right sides of the front panel 113. The T-shaped handles provide a stable point of force for pulling, are ergonomically designed, and facilitate the operator's exertion of force. Compared to directly pulling the edge of the front panel 113, the handles reduce the risk of hand slippage, especially in scenarios with confined space and limited operation in the ship's engine room, allowing for quick extraction of the battery cell assembly 112 and shortening maintenance time. Simultaneously, the symmetrically arranged handles distribute the pulling force evenly on both sides of the front panel 113, reducing deformation or damage to the front panel 113 caused by single-point force and extending the component's service life. Furthermore, the detachable design of the T-shaped handles 115 allows them to be installed only during maintenance and removed during normal operation, preventing them from occupying extra space or interfering with other components in the engine room.

[0047] For further details, please refer to Figure 10 In one embodiment, the left and right sides of the front panel 113 are provided with first pull-out bolt holes 1131 that mate with the T-shaped handle 115, and the rear end of the T-shaped handle 115 is provided with a stud 1151 that mates with the first pull-out bolt holes 1131. The matching design of the first pull-out bolt holes 1131 and the stud 1151 ensures the accuracy of the T-shaped handle's position during installation and avoids uneven pulling force caused by installation deviation. At the same time, the bolt connection method is simple to operate and can be completed without special tools, improving maintenance efficiency. In addition, when the T-shaped handle 115 is not installed, the first pull-out bolt holes 1131 can be sealed with screws to block the communication between the accommodating cavity 1111 and the external environment, preventing seawater, moisture, dust, etc. from entering the accommodating cavity 1111, thereby ensuring the sealing of the marine battery module 11.

[0048] For further details, please refer to Figure 7 , Figure 8The battery cell assembly 112 is connected to the front panel 113 and the rear panel 114 by multiple I-shaped connectors 116 to form an integral unit. There are two I-shaped connectors 116 between the battery cell assembly 112 and the front panel 113, which correspond to the positions of the two first pull-out bolt holes 1131. The front end of the two I-shaped connectors 116 is provided with a second pull-out bolt hole that mates with the first pull-out bolt hole 1131. When the T-shaped handle 115 is installed, its stud 1151 passes through the first pull-out bolt hole 1131 and connects to the second pull-out bolt hole. The I-shaped connector 116 itself has high structural strength, which can firmly connect the battery cell assembly 112, the front panel 113, and the rear panel 114 into a whole. The cooperation between the second pull-out bolt hole and the T-shaped handle stud 1151 allows the pull-out force to be directly transmitted to the battery cell assembly 112 through the I-shaped connector 116, avoiding the front panel 113 from bearing the pull-out force alone. This fundamentally solves the problem of the front panel 113 deforming due to excessive force during the pull-out process, and is especially suitable for the heavier battery cell assembly 112.

[0049] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0050] The present invention has been described above with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A pull-out marine battery stacking structure, characterized in that, The device includes several stacked marine battery packs, each consisting of multiple vertically stacked marine battery modules. Each marine battery module includes a housing. The top surface of the housing has recessed left and right edges to form a through groove, and the bottom surface of the housing has convex left and right edges to form a convex strip of the same length as the housing. The convex strips on the same side cooperate with the grooves to form a tenon and mortise structure. Both the convex strip and the groove have a non-right-angled parallelogram or a right-angled trapezoid in their longitudinal cross-section; The convex strip has its hypotenuse inclined outwards. The outer sidewall of the convex strip is provided with a plurality of first clearance grooves at intervals along its length. A first insertion part is formed between two adjacent first clearance grooves. The outer sidewall of the groove is provided with a plurality of second clearance grooves at intervals along its length that mate with the first insertion part. The positions of the second clearance grooves and the first clearance grooves correspond one-to-one. A second insertion part that mates with the first clearance groove is formed between two adjacent second clearance grooves. The longitudinal sections of the first clearance groove, the first insertion part, the second clearance groove, and the second insertion part are all right-angled triangles. The left and right outer walls of the outer casing are provided with multiple screw clearance slots along their length. The top of the screw clearance slot is provided with a first screw hole that runs through the front and back, and the bottom of the screw clearance slot is provided with a second screw hole that runs through the front and back and mates with the first screw hole.

2. The pull-out marine battery stacking structure according to claim 1, characterized in that, The marine battery stack also includes a fixing bracket, through which all vertically stacked marine battery modules are fixed, and adjacent marine battery stacks are fixed through the fixing bracket.

3. The pull-out marine battery stacking structure according to claim 2, characterized in that, The fixing bracket includes a fixing base, two front fixing strips disposed on the left and right sides of the front end of the fixing base, and two rear fixing strips disposed on the left and right sides of the rear end of the fixing base. The top surface of the fixing base has a recessed groove on each of its left and right edges to cooperate with the protruding strips. The two front fixing strips are fixed to the fixing base and the left and right sides of the front end of all the vertically stacked marine battery modules by screws. The two rear fixing strips are fixed to the left and right sides of the rear end of all the vertically stacked marine battery modules by screws. The two adjacent front fixing strips and the two adjacent rear fixing strips are all fixed by screws.

4. The pull-out marine battery stacking structure according to claim 3, characterized in that, The fixed base has a first fixing hole that mates with the battery mounting position in the ship's power room. The bottom of the front fixing bar extends downward to form an extension portion lower than the bottom surface of the fixed base. The extension portion has a second fixing hole that mates with the battery mounting position in the ship's power room.

5. The pull-out marine battery stacking structure according to claim 1, characterized in that, The outer casing has a through-cavity. The marine battery module further includes a cell assembly disposed in the cavity, a front panel disposed on the front side of the cavity, and a rear panel disposed on the rear side of the cavity. The cell assembly is connected to the front panel and the rear panel to form an integral unit and can slide back and forth along the cavity. The front panel is connected to the front end of the outer casing by screws.

6. The pull-out marine battery stacking structure according to claim 5, characterized in that, Both sides of the front panel are detachably connected to T-shaped handles.

7. The pull-out marine battery stacking structure according to claim 6, characterized in that, The front panel has pull bolt holes on both the left and right sides that mate with the T-shaped handle, and the rear end of the T-shaped handle has a stud that mates with the pull bolt holes.

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