Battery cell isolation type marine battery pack

Abstract

The utility model provides a battery cell isolation type marine battery pack, and relates to the technical field of energy storage devices, the battery cell isolation type marine battery pack comprises a frame structure connected with the bulkhead of a ship, and the frame structure is provided with a plurality of battery cell placing spaces; the battery cells are arranged in the battery cell placing space; each battery cell placing space is used for accommodating at least two battery cells; in the same battery cell placing space, a buffer interlayer is arranged between two adjacent battery cells; the buffer interlayer is composed of a heat insulation layer and an expansion compensation layer. And the thermal insulation layer and / or the expansion compensation layer abut against the battery cell. According to the technical scheme, the heat insulation layer and the expansion compensation layer are arranged between the two adjacent battery cells, and the heat insulation layer is used for heat insulation, so that heat accumulation is effectively avoided, heat dissipation of the marine battery pack is facilitated, and the heat dissipation efficiency is improved; the expansion compensation layer is used for absorbing expansion generated during charging and discharging and aging of the battery cell, so that the battery cell is prevented from being extruded and damaged, and the service life of the battery cell is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of energy storage device technology, and more specifically, to a cell-isolated marine battery pack. Background Technology

[0002] In related technologies, marine battery packs consist of multiple battery modules that are typically in direct contact with each other. This approach hinders heat dissipation between the battery modules, and the expansion of the modules during charging and discharging can cause them to press against each other, affecting their lifespan. Utility Model Content

[0003] In order to solve or improve the technical problems of traditional marine battery packs being unfavorable for heat dissipation and the expansion of battery modules during charging and discharging causing them to squeeze each other, one objective of this utility model is to provide a cell-isolated marine battery pack.

[0004] To achieve the above objectives, the first aspect of this utility model provides a cell-isolated marine battery pack for use in ships. The cell-isolated marine battery pack includes: a frame structure connected to the bulkhead of the ship, the frame structure having multiple cell placement spaces; multiple cells, each cell being disposed within a cell placement space; each cell placement space accommodating at least two cells; a buffer interlayer provided between two adjacent cells within the same cell placement space; the buffer interlayer consisting of a heat insulation layer and an expansion compensation layer; the heat insulation layer and / or the expansion compensation layer abutting against the cells.

[0005] In the technical solution defined by this utility model, by placing the battery cells in the battery cell placement space, and each battery cell placement space is used to accommodate at least two battery cells, it is beneficial to optimize the spatial layout, realize flexible installation of battery cells, simplify the complex assembly process of "from battery cell to module, from module to battery pack", and reduce the space occupied.

[0006] In addition, by setting a heat insulation layer and an expansion compensation layer between two adjacent cells, firstly, the heat insulation layer can play a role in heat insulation, which can largely prevent the heat generated from accumulating between the cells, which is conducive to heat dissipation of the cell-isolated marine battery pack and improves heat dissipation efficiency; secondly, the expansion compensation layer is used to absorb the expansion generated during the charging and discharging of the cells and during aging, which can prevent the cells from being squeezed and damaged, and help to extend the service life of the cells.

[0007] In some technical solutions, optionally, a heat insulation layer and two expansion compensation layers are provided between two adjacent battery cells, with the heat insulation layer located between the two expansion compensation layers and the expansion compensation layer abutting against the battery cell; or an expansion compensation layer and two heat insulation layers are provided between two adjacent battery cells, with the expansion compensation layer located between the two heat insulation layers and the heat insulation layer abutting against the battery cell; or an expansion compensation layer and a heat insulation layer are provided between two adjacent battery cells, with the expansion compensation layer abutting against one of the battery cells and the heat insulation layer abutting against the other battery cell.

[0008] In this technical solution, the synergistic effect of the heat insulation layer and the expansion compensation layer can improve the space utilization of the marine battery pack while achieving efficient heat insulation and buffering functions. This allows more battery cells to be accommodated within the same frame structure, thereby increasing the energy density of the marine battery pack and providing longer-lasting power support for the ship.

[0009] In some technical solutions, the thickness of the buffer interlayer can optionally be 0.5 mm to 4 mm.

[0010] In this technical solution, by limiting the thickness range of the buffer interlayer, firstly, it avoids the buffer interlayer being too thick, which would occupy too much space for battery cell placement, thus helping to control material costs and avoid material waste; secondly, it avoids the buffer interlayer being too thin, ensuring that the buffer interlayer can achieve efficient heat insulation and buffering functions.

[0011] In some technical solutions, optionally, the frame structure has a cavity; the marine battery pack also includes: multiple crossbeams, which are disposed in the cavity along a first direction and connected to the frame structure; at least one longitudinal beam, which is disposed in the cavity along a second direction and connected to the frame structure and the crossbeams, the second direction being different from the first direction; at least one longitudinal beam and multiple crossbeams divide the cavity into multiple cell placement spaces; the cells abut against the crossbeams, longitudinal beams, and frame structure.

[0012] In this technical solution, the cavity of the frame structure is divided into multiple cell placement spaces by crisscrossing horizontal and vertical beams. This helps to optimize the spatial layout, enable flexible installation of the cells, simplify the complex assembly process from "cell to module, module to battery pack", and reduce the space occupied.

[0013] In some technical solutions, optionally, the frame structure includes: a bottom plate; multiple side plates connected to the bottom plate, the multiple side plates and the bottom plate enclosing a cavity; crossbeams connected to the bottom plate and side plates; longitudinal beams connected to the bottom plate, side plates and crossbeams; at least one side plate for connecting to the bulkhead, and the bottom plate for abutting against the bulkhead.

[0014] In this technical solution, a stable spatial force system is formed through the cooperation of the base plate, side plates, crossbeams and longitudinal beams. This spatial force system can be flexibly expanded according to the series or parallel relationship of the battery cells, so that each battery cell can be inserted into the corresponding battery cell placement space, realizing the modular design of the battery cells, which is conducive to saving space.

[0015] In some technical solutions, optionally, a heat-conducting plate is provided on the side wall of the battery cell, and the battery cell abuts against the crossbeam through the heat-conducting plate.

[0016] In this technical solution, the heat-conducting sheet primarily functions to conduct heat, which facilitates the construction of a composite heat dissipation system of "cell-heat-conducting sheet-beam," thereby improving heat dissipation efficiency. The heat-conducting sheet also serves as insulation, heat insulation, and buffering.

[0017] In some technical solutions, the crossbeam may optionally include a cooling plate, which has a liquid cooling channel and at least two air cooling channels, with at least one air cooling channel located on one side of the liquid cooling channel and at least one air cooling channel located on the other side of the liquid cooling channel.

[0018] In this technical solution, the cooling plate integrates liquid cooling channels and air cooling channels, forming a dual cooling mechanism. The liquid cooling channels can quickly remove the large amount of heat generated by the battery cells, while the air cooling channels further assist in heat dissipation, enhancing the heat dissipation effect. Compared with a single cooling method, this dual cooling method significantly improves heat dissipation efficiency, ensuring that the battery cells remain within a suitable operating temperature range under various operating conditions, effectively extending the battery cell's lifespan and improving the performance stability of the battery pack.

[0019] In some technical solutions, the air-cooling aisle may optionally include multiple parallel gas channels; in the same air-cooling aisle, two adjacent gas channels are separated by a partition sidewall.

[0020] In this technical solution, multiple parallel gas channels significantly increase the heat exchange area with the battery cell. As gas flows through these channels, it can more effectively absorb the heat generated by the battery cell. Compared to a single large-channel design, the multi-parallel channel structure significantly improves heat dissipation efficiency.

[0021] By designing separate sidewalls, it is possible to ensure that two adjacent gas channels are independent of each other, effectively preventing airflow from mixing between adjacent gas channels and allowing the gas in each gas channel to flow independently and in an orderly manner. This design allows the gas to more fully absorb the heat dissipated by the battery cell, thereby significantly improving heat dissipation efficiency.

[0022] In some technical solutions, the cell-isolated marine battery pack may optionally include: a top cover that closes to the opening of the frame structure, wherein the top cover and the frame structure are in a sealed connection when the top cover and the frame structure are in a connected state.

[0023] In this technical solution, by setting a top cover and sealing the top cover with the frame structure, water, dust and other impurities can be largely prevented from entering, thus ensuring the reliability of the marine battery pack.

[0024] In some technical solutions, optionally, the cell-isolated marine battery pack also includes: a connecting assembly, located on the side plate, the connecting assembly being used to connect to the bulkhead; one side of the bottom plate abuts against the bulkhead.

[0025] In this technical solution, by setting up connecting components, it is beneficial to improve the connection strength between the frame structure and the bulkhead when they are connected, and it can also avoid directly opening holes in the side plates, which helps to ensure the structural strength of the side plates.

[0026] Additional aspects and advantages of the present invention will become apparent in the following description or may be learned by practice of the present invention. Attached Figure Description

[0027] Figure 1 A schematic diagram of a cell-isolated marine battery pack according to an embodiment of the present invention is shown;

[0028] Figure 2 A schematic diagram of a buffer interlayer according to an embodiment of the present invention is shown;

[0029] Figure 3 A schematic diagram of a buffer interlayer according to another embodiment of the present invention is shown;

[0030] Figure 4 A schematic diagram of a buffer interlayer according to another embodiment of the present invention is shown;

[0031] Figure 5 A schematic diagram of a cell-isolated marine battery pack according to another embodiment of the present invention is shown;

[0032] Figure 6 An exploded view of a crossbeam according to an embodiment of the present invention is shown;

[0033] Figure 7 A schematic diagram of a crossbeam according to an embodiment of the present invention is shown;

[0034] Figure 8 A schematic diagram of a ship (retaining only the cell-isolated marine battery pack and bulkhead) according to an embodiment of the present invention is shown;

[0035] Figure 9 A schematic diagram of a ship (retaining only the cell-isolated marine battery pack and bulkhead) according to another embodiment of the present invention is shown;

[0036] Figure 10 A schematic diagram of the connection structure between the positioning reinforcing rib and the crossbeam according to an embodiment of the present invention is shown;

[0037] Figure 11 A schematic diagram of the connection structure between the positioning reinforcing rib and the base plate according to an embodiment of the present invention is shown;

[0038] Figure 12 A schematic diagram of a crossbeam according to another embodiment of the present invention is shown;

[0039] Figure 13 A schematic diagram of a longitudinal beam according to an embodiment of the present invention is shown.

[0040] in, Figures 1 to 13 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0041] 100: Cell-isolated marine battery pack; 111: Base plate; 112: Positioning reinforcing rib; 113: Side plate; 115: Connecting assembly; 1151: Ear plate; 120: Frame structure; 121: Cavity; 1213: Opening; 1214: Cell placement space; 130: Crossbeam; 1311: Liquid cooling channel; 1312: Air cooling channel; 1314: Gas channel; 1315: Separating sidewall; 132: Cooling plate; 133: End reinforcing beam; 1341: First sealing plate; 1342: Second sealing plate; 140: Longitudinal beam ; 141: Second slot; 151: First slot; 1511: First slot bottom; 1512: First slot opening; 152: First protrusion; 1521: First contact surface; 1522: First connecting surface; 163: Top cover; 181: Battery cell; 182: Insulating pad; 183: Heat-conducting sheet; 184: Buffer interlayer; 1841: Heat insulation layer; 1842: Expansion compensation layer; 200: Ship; 210: Bulkhead; 211: Side wall of hull; 212: Bottom wall of hull; a: First direction; b: Second direction; D: Thickness of buffer interlayer. Detailed Implementation

[0042] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this utility model, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, embodiments of the present invention may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0044] The following reference Figures 1 to 13 This invention describes a cell-isolated marine battery pack provided according to some embodiments of the present invention.

[0045] In one embodiment of the present invention, the cell-isolated marine battery pack 100 is used in a vessel 200. Optionally, the cell-isolated marine battery pack 100 is installed in the bulkhead 210 of the vessel 200. It should be noted that the bulkhead 210 of the vessel 200 includes, but is not limited to, the side bulkhead 211 and the bottom bulkhead 212 of the hull.

[0046] like Figure 1 , Figure 5 , Figure 8 and Figure 9 As shown, the cell-isolated marine battery pack 100 includes a frame structure 120 and multiple battery cells 181. The frame structure 120 is connected to the bulkhead 210 of the vessel 200.

[0047] Optionally, such as Figure 8 and Figure 9 As shown, the bulkhead 210 of the vessel 200 is either a side bulkhead 211 or a bottom bulkhead 212. The cell-isolated marine battery pack 100 is wall-mounted on the side bulkhead 211; or, the cell-isolated marine battery pack 100 is laid flat on the bottom bulkhead 212.

[0048] Optionally, the frame structure 120 and the bulkhead 210 are detachably connected, which facilitates the disassembly and assembly of the frame structure 120 by the staff and allows for flexible adjustment of the installation position of the frame structure 120.

[0049] In one specific embodiment, the frame structure 120 and the bulkhead 210 of the ship 200 are detachably connected by bolts, pins or other types of connectors.

[0050] In one specific embodiment, the frame structure 120 and the bulkhead 210 of the ship 200 are detachably connected by means of snap-fit ​​or the like.

[0051] The frame structure 120 has multiple cell placement spaces 1214. Multiple cells 181 are disposed within each cell placement space 1214. Each cell placement space 1214 is used to accommodate at least two cells 181.

[0052] By placing the battery cell 181 within the battery cell placement space 1214, and with each battery cell placement space 1214 accommodating at least two battery cells 181, it is beneficial to optimize the spatial layout, enable flexible installation of the battery cell 181, simplify the complex assembly process of "from battery cell 181 to module, from module to battery pack", and reduce the space occupied.

[0053] Within the same cell placement space 1214, a buffer interlayer 184 is provided between two adjacent cells 181. The buffer interlayer 184 consists of a heat insulation layer 1841 and an expansion compensation layer 1842. The heat insulation layer 1841 and / or the expansion compensation layer 1842 abut against the cell 181.

[0054] In one specific embodiment, the buffer interlayer 184 includes a heat insulation layer 1841 and an expansion compensation layer 1842. The heat insulation layer 1841 is in direct contact with the battery cell 181, while the expansion compensation layer 1842 is not in direct contact with the battery cell 181.

[0055] In one specific embodiment, the buffer interlayer 184 includes a heat insulation layer 1841 and an expansion compensation layer 1842. The expansion compensation layer 1842 is in direct contact with the battery cell 181, while the heat insulation layer 1841 is not in direct contact with the battery cell 181.

[0056] In one specific embodiment, the buffer interlayer 184 includes a heat insulation layer 1841 and an expansion compensation layer 1842. The heat insulation layer 1841 is in direct contact with the battery cell 181, and the expansion compensation layer 1842 is in direct contact with the battery cell 181.

[0057] Optionally, the heat insulation layer 1841 can be any one of aerogel felt, mica board, and ceramic fiber felt. The heat insulation layer 1841 can play a role in heat insulation, which can largely prevent the heat generated from accumulating between the cells 181, which is conducive to heat dissipation of the cell-isolated marine battery pack 100 and improves heat dissipation efficiency.

[0058] In one specific embodiment, the thermal insulation layer 1841 is an aerogel felt. Aerogel felt has low thermal conductivity and high temperature resistance, effectively blocking heat conduction between the battery cells 181 and suppressing the spread of thermal runaway. Furthermore, aerogel felt is hydrophobic, allowing it to adapt to the humid environment of the ship 200 and preventing water absorption that could degrade its thermal insulation performance.

[0059] In one specific embodiment, the heat insulation layer 1841 is a mica sheet. Mica sheets are characterized by low thermal conductivity and high insulation resistance. They also have high mechanical strength and are not easily damaged. The smooth surface of the mica sheet reduces friction with the battery cell 181 and blocks heat conduction paths.

[0060] In one specific embodiment, the thermal insulation layer 1841 is a ceramic fiber felt. Ceramic fiber felt is characterized by high temperature resistance and good thermal stability. It also possesses a certain degree of flexibility, allowing it to conform to the curved surface of the battery cell 181. Furthermore, ceramic fiber felt is chemically inert and resistant to electrolyte corrosion. As a non-flammable material, it meets the marine 200 fire safety requirements and can maintain structural integrity at high temperatures, preventing heat transfer.

[0061] Optionally, the expansion compensation layer 1842 is any one of silicone rubber pad, ethylene propylene diene monomer (EPDM) rubber pad, and thermoplastic elastomer (TPE). The expansion compensation layer 1842 is used to absorb the expansion generated during charging, discharging, and aging of the battery cell 181, preventing the battery cell 181 from being damaged by compression, and thus helping to extend the service life of the battery cell 181.

[0062] In one specific embodiment, the expansion compensation layer 1842 is a silicone rubber pad. The silicone rubber pad has a low elastic modulus and is compressible. The silicone rubber pad can maintain its elasticity in the alternating high and low temperature environment of a ship at 200°C, buffering the expansion stress of the battery cell 181 during charging and discharging.

[0063] In one specific embodiment, the expansion compensation layer 1842 is an ethylene propylene diene monomer (EPDM) rubber pad. EPDM is a terpolymer of ethylene, propylene, and a non-conjugated diene, possessing excellent weather resistance, water resistance, and chemical corrosion resistance. The EPDM rubber pad is less prone to failure in humid environments and can stably compensate for the expansion of the battery cell 181 over a long period.

[0064] In one specific embodiment, the expansion compensation layer 1842 is a thermoplastic elastic plate. Thermoplastic elastic plate is a thermoplastic elastomer that is not prone to failure and can stably compensate for the expansion of the battery cell 181 over a long period of time.

[0065] In the technical solution defined by this utility model, by placing the battery cell 181 in the battery cell placement space 1214, and each battery cell placement space 1214 is used to accommodate at least two battery cells 181, it is beneficial to optimize the spatial layout, realize the flexible installation of the battery cell 181, simplify the complex assembly process of "from battery cell 181 to module, from module to battery pack", and reduce the space occupied.

[0066] Furthermore, by providing a heat insulation layer 1841 and an expansion compensation layer 1842 between two adjacent battery cells 181, firstly, the heat insulation layer 1841 can play a role in heat insulation, which largely prevents the heat generated from accumulating between the battery cells 181, which is conducive to heat dissipation of the battery cell isolated marine battery pack 100 and improves heat dissipation efficiency; secondly, the expansion compensation layer 1842 is used to absorb the expansion generated during charging and discharging of the battery cells 181 and during aging, which prevents the battery cells 181 from being squeezed and damaged, and helps to extend the service life of the battery cells 181.

[0067] In some embodiments, optionally, such as Figure 2 As shown, a heat insulation layer 1841 and two expansion compensation layers 1842 are provided between two adjacent battery cells 181. The heat insulation layer 1841 is located between the two expansion compensation layers 1842, and the expansion compensation layers 1842 abut against the battery cells 181.

[0068] The design employs a "dual expansion compensation layer 1842 sandwiching a heat insulation layer 1841" between two adjacent battery cells 181, achieving dual protection functions of expansion compensation and heat insulation. This structural design cleverly utilizes the limited space between the battery cells 181, achieving efficient heat insulation and buffering without significantly increasing the volume and weight of the marine battery pack. This compact structural layout improves the space utilization of the marine battery pack, allowing more battery cells 181 to be accommodated within the same frame structure 120, thereby increasing the energy density of the marine battery pack and providing longer-lasting power support for the vessel 200.

[0069] By setting up the heat insulation layer 1841, the thermal conductivity between two adjacent cells 181 is reduced, thus achieving the function of heat insulation. During the charging and discharging process of the cell 181, heat is transferred to the surroundings, and the heat insulation layer 1841 with low thermal conductivity can effectively block the heat transfer path, limiting the heat generated by a single cell 181 to a small area and reducing the impact of heat on adjacent cells 181.

[0070] Two expansion compensation layers 1842 abut against the battery cell 181, providing all-around buffer protection for the battery cell 181 from both sides. When the battery cell 181 expands during charging, the two expansion compensation layers 1842 are compressed simultaneously, evenly dispersing the expansion force and preventing problems such as shell deformation and internal structural damage caused by excessive local stress on the battery cell 181. When the battery cell 181 contracts during discharge, the rebound characteristics of the expansion compensation layers 1842 can fill the gaps created by the contraction of the battery cell 181, preventing the battery cell 181 from shaking.

[0071] In some embodiments, optionally, such as Figure 3As shown, an expansion compensation layer 1842 and two heat insulation layers 1841 are provided between two adjacent battery cells 181. The expansion compensation layer 1842 is located between the two heat insulation layers 1841, and the heat insulation layers 1841 abut against the battery cells 181.

[0072] The two adjacent battery cells 181 are connected by a "double insulation layer 1841 sandwiching an expansion compensation layer 1842" design, achieving dual protection functions of heat insulation and expansion compensation. This design can achieve efficient heat insulation and buffering functions without significantly increasing the volume and weight of the marine battery pack, which is conducive to improving the space utilization of the marine battery pack. It allows more battery cells 181 to be accommodated within the same frame structure 120, thereby increasing the energy density of the marine battery pack and providing longer-lasting power support for the ship 200.

[0073] Compared to a single-layer insulation structure, the double-insulation layer 1841 design significantly enhances the thermal barrier capability between the cells 181, effectively suppressing the spread of thermal runaway from a single cell 181 to the surrounding area. The expansion compensation layer 1842 located in the middle can provide bidirectional buffering for the expansion forces of the cells 181 on both sides.

[0074] In some embodiments, optionally, such as Figure 4 As shown, an expansion compensation layer 1842 and a heat insulation layer 1841 are provided between two adjacent battery cells 181. The expansion compensation layer 1842 abuts against one of the battery cells 181, and the heat insulation layer 1841 abuts against the other battery cell 181.

[0075] By setting an expansion compensation layer 1842 and a heat insulation layer 1841 between two adjacent cells 181, it is possible to reduce the redundant thickness between layers while achieving efficient heat insulation and buffering functions. This allows more cells 181 to be accommodated within the same frame structure 120, thereby increasing the energy density of the marine battery pack and providing longer-lasting power support for the ship 200.

[0076] In some embodiments, optionally, such as Figure 2 As shown, the thickness D of the buffer interlayer 184 is 0.5 mm to 4 mm.

[0077] By limiting the thickness D range of the buffer interlayer 184, firstly, it avoids the buffer interlayer 184 from being too thick, occupying too much space 1214 for cell placement, which helps control material costs and avoid material waste; secondly, it avoids the buffer interlayer 184 from being too thin, ensuring that the buffer interlayer 184 can achieve efficient heat insulation and buffering functions.

[0078] In one specific embodiment, the thickness D of the buffer interlayer 184 is 0.5 mm.

[0079] In one specific embodiment, the thickness D of the buffer interlayer 184 is 1 mm.

[0080] In one specific embodiment, the thickness D of the buffer interlayer 184 is 2 mm.

[0081] In one specific embodiment, the thickness D of the buffer interlayer 184 is 3 mm.

[0082] In one specific embodiment, the thickness D of the buffer interlayer 184 is 4 mm.

[0083] In some embodiments, optionally, such as Figure 5 As shown, the frame structure 120 has a cavity 121. The marine battery pack also includes a plurality of crossbeams 130 and at least one longitudinal beam 140. The crossbeams 130 are disposed within the cavity 121 along a first direction a and are connected to the frame structure 120.

[0084] Optionally, the crossbeam 130 and the frame structure 120 are detachably connected, which facilitates the disassembly and assembly of the crossbeam 130 by staff and is beneficial for maintenance or replacement.

[0085] In one specific embodiment, the crossbeam 130 and the frame structure 120 are detachably connected by bolts, pins or screws, which is convenient, quick and easy to operate.

[0086] A longitudinal beam 140 is disposed within the cavity 121 along a second direction b. The longitudinal beam 140 is connected to the frame structure 120 and the crossbeam 130. The second direction b is different from the first direction a. At least one longitudinal beam 140 and multiple crossbeams 130 divide the cavity 121 into multiple cell placement spaces 1214. The cell 181 abuts against the crossbeam 130, the longitudinal beam 140, and the frame structure 120.

[0087] The cavity 121 of the frame structure 120 is divided into multiple cell placement spaces 1214 for accommodating the cells 181 by the intersecting horizontal beams 130 and vertical beams 140. This helps to optimize the spatial layout, enable flexible installation of the cells 181, simplify the complex assembly process of "from cell 181 to module, from module to battery pack", and reduce the space occupied.

[0088] It should be noted that there is a non-zero angle between the second direction b and the first direction a.

[0089] In one specific embodiment, the second direction b is perpendicular to the first direction a. This design ensures that the separated cell placement space 1214 has a more regular shape and is easier to place the cell 181.

[0090] Optionally, the longitudinal beam 140 is detachably connected to the frame structure 120, and the longitudinal beam 140 is detachably connected to the transverse beam 130, which facilitates the disassembly and assembly of the longitudinal beam 140 and the transverse beam 130 by the staff, and is beneficial for maintenance or replacement.

[0091] In one specific embodiment, the longitudinal beam 140 and the frame structure 120 are detachably connected by bolts, pins or screws, which is convenient, quick and easy to operate.

[0092] In one specific embodiment, the longitudinal beam 140 and the transverse beam 130 are detachably connected by bolts, pins or screws, which is convenient, quick and easy to operate.

[0093] It should be emphasized that there are multiple crossbeams 130. There is at least one longitudinal beam 140; that is, there can be one, two, or more longitudinal beams 140. Considering the number of cell placement spaces 1214, their size, cost, and other factors, the number of crossbeams 130 and longitudinal beams 140 can be flexibly set according to actual needs.

[0094] In some embodiments, optionally, at least one battery cell 181 is disposed within the battery cell placement space 1214. The number of battery cells 181 is at least one, that is, there may be one, two or more battery cells 181, and the number of battery cells 181 can be flexibly set according to actual needs.

[0095] When two battery cells 181 are simultaneously placed within a single battery cell placement space 1214, the two cells 181 are separated by an expansion compensation plate (expansion compensation layer 1842) and an insulating aerosol layer (insulation layer 1841) to prevent direct contact between the two cells 181. The insulating aerosol layer primarily serves as heat insulation. The expansion compensation plate absorbs some of the deformation from the battery cell 181, which can largely prevent damage caused by the cells 181 squeezing against each other.

[0096] The battery cell 181 has a housing in the shape of a cuboid, with rounded corners to largely prevent the battery cell 181 from colliding with other components. Optionally, the housing is a square aluminum shell to ensure sufficient structural strength and resistance to deformation (rigidity).

[0097] In some embodiments, optionally, such as Figure 1 , Figure 5 , Figure 8 and Figure 9 As shown, the frame structure 120 includes a base plate 111 and multiple side plates 113. The multiple side plates 113 are connected to the base plate 111. The multiple side plates 113 and the base plate 111 enclose a cavity 121.

[0098] It should be noted that the frame structure 120 is not a closed structure. The cavity 121 of the frame structure 120 has an opening 1213.

[0099] The plurality of side panels 113 includes two or a combination of the following: a left side panel, a right side panel, a front side panel, and a rear side panel. When the plurality of side panels 113 include a left side panel, a right side panel, a front side panel, and a rear side panel, the left side panel and the right side panel are arranged opposite each other, and the front side panel and the rear side panel are arranged opposite each other. The left side panel is located between the front side panel and the rear side panel; the right side panel is located between the front side panel and the rear side panel; the front side panel is located between the left side panel and the right side panel; and the rear side panel is located between the left side panel and the right side panel.

[0100] The multiple side panels 113 may include only two of the following: left side panel, right side panel, front side panel, and rear side panel. For example, the multiple side panels 113 may include only the front side panel and the rear side panel, meaning the frame structure 120 only has front and rear side panels; or, the multiple side panels 113 may include only the left side panel and the right side panel, meaning the frame structure 120 only has left and right side panels. Other combinations are not listed here.

[0101] The multiple side panels 113 may include only three of the following: left side panel, right side panel, front side panel, and rear side panel. For example, the multiple side panels 113 may include only the front side panel, rear side panel, and left side panel, meaning the frame structure 120 only has the front side panel, rear side panel, and left side panel; or, the multiple side panels 113 may include only the front side panel, rear side panel, and right side panel, meaning the frame structure 120 only has the front side panel, rear side panel, and right side panel. Other combinations are not listed here.

[0102] Optionally, the surface area of ​​the bottom plate 111 is larger than the surface area of ​​each side plate 113. Multiple side plates 113 are located on the same side of the bottom plate 111, and the side plates 113 are connected to the edge of the bottom plate 111. The side plates 113 and the bottom plate 111 together form a frame structure 120 with cavities 121. The other side of the bottom plate 111 is used to abut against the bulkhead 210 of the ship 200.

[0103] In one specific embodiment, the side plate 113 and the bottom plate 111 are detachably connected, which facilitates disassembly and assembly by personnel and is beneficial for maintenance or replacement. In addition, by flexibly disassembling and assembling the side plate 113 and the bottom plate 111, the frame structure 120 can be easily installed at any position on the bulkhead 210 of the ship 200.

[0104] With the frame structure 120 and the bulkhead 210 connected, at least one side plate 113 is connected to the bulkhead 210, and the bottom plate 111 is attached to the bulkhead 210.

[0105] Because the base plate 111 has sufficient resistance to deformation, when the marine battery pack (cell-isolated marine battery pack 100) is installed on the bulkhead 210 of the vessel 200, the base plate 111 and the bulkhead 210 can fit tightly together, ensuring the fitting accuracy between the two and effectively preventing the marine battery pack from shaking after installation.

[0106] The crossbeam 130 is connected to the base plate 111 and the side plate 113. Specifically, the crossbeam 130 is connected to the base plate 111 and the side plate 113.

[0107] Optionally, the crossbeam 130 and the side plate 113 can be detachably connected by bolts, pins or screws, which is convenient, quick and easy to operate.

[0108] The longitudinal beam 140 is connected to the base plate 111, the side plate 113, and the transverse beam 130. Specifically, the longitudinal beam 140 is connected to the base plate 111, the side plate 113, and the transverse beam 130.

[0109] Optionally, the longitudinal beam 140 and the side plate 113 are detachably connected, and the longitudinal beam 140 and the cross beam 130 are detachably connected, which makes it convenient for workers to disassemble and assemble the longitudinal beam 140 and the cross beam 130, which is beneficial for maintenance or replacement.

[0110] In one specific embodiment, the longitudinal beam 140 and the side plate 113 are detachably connected by bolts, pins or screws, which is convenient, quick and easy to operate.

[0111] After the battery cell 181 is placed in the battery cell placement space 1214, the side wall of the battery cell 181 abuts against the crossbeam 130, the longitudinal beam 140, the base plate 111, and the side plate 113.

[0112] like Figure 1 , Figure 8 and Figure 9 As shown, when the side wall of the battery cell 181 abuts against the side plate 113, an insulating pad 182 is provided between the battery cell 181 and the side plate 113. In other words, an insulating pad 182 is provided on the side plate 113 to avoid direct contact between the surface of the side plate 113 and the battery cell 181. The insulating pad 182 can play the roles of insulation, heat insulation and buffering.

[0113] like Figure 1 , Figure 8 and Figure 9 As shown, when the side wall of the battery cell 181 abuts against the base plate 111, an insulating pad 182 is provided between the battery cell 181 and the base plate 111. In other words, an insulating pad 182 is provided on the base plate 111 to avoid direct contact between the surface of the base plate 111 and the battery cell 181. The insulating pad 182 can play the roles of insulation, heat insulation and buffering.

[0114] In the technical solution defined by this utility model, the crossbeam 130 and the longitudinal beam 140 divide the cavity 121 of the frame structure 120 into multiple battery cell placement spaces 1214. The battery cell 181 is placed in the battery cell placement space 1214. Therefore, the battery cell 181 can directly contact the crossbeam 130, which is beneficial to improving the installation accuracy of the battery cell 181.

[0115] The base plate 111, side plate 113, crossbeam 130 and longitudinal beam 140 work together to form a stable spatial force system. This spatial force system can be flexibly expanded according to the series or parallel relationship of the battery cells 181 so that each battery cell 181 can be inserted into the corresponding battery cell placement space 1214, realizing the modular design of the battery cells 181, which is conducive to saving space.

[0116] In some embodiments, optionally, such as Figure 5 As shown, a heat-conducting plate 183 is provided on the side wall of the battery cell 181, and the battery cell 181 abuts against the crossbeam 130 through the heat-conducting plate 183.

[0117] The heat-conducting plate 183 primarily functions to conduct heat, which helps to construct a composite heat dissipation system of "cell 181 - heat-conducting plate 183 - crossbeam 130", thereby improving heat dissipation efficiency. The heat-conducting plate 183 also serves to provide insulation, heat insulation, and buffering.

[0118] It should be noted that the heat-conducting sheet 183 can fill the tiny gap between the battery cell 181 and the crossbeam 130, and together with the cooling channels (liquid cooling channel 1311 and air cooling channel 1312) in the crossbeam 130, it forms a composite heat dissipation mode of "surface contact heat dissipation and fluid convection heat dissipation", which is beneficial to improving heat dissipation efficiency.

[0119] The elastic deformation of the heat-conducting sheet 183 can absorb some of the expansion displacement, working in conjunction with the expansion compensation layer 1842 to prevent shell cracks or electrode breakage caused by rigid contact in the battery cell 181. Especially under conditions such as frequent start-stop and sudden load changes in the ship 200, it can effectively suppress the accumulation of mechanical stress in the battery cell 181.

[0120] The compressibility of the heat-conducting sheet 183 allows for a dimensional tolerance of ±0.2mm between the battery cell 181 and the crossbeam 130, reducing the requirements for component machining accuracy and significantly reducing manufacturing costs.

[0121] In some embodiments, optionally, such as Figure 6 and Figure 7 As shown, the crossbeam 130 includes a cooling plate 132, which has a liquid cooling channel 1311 and at least two air cooling channels 1312. At least one air cooling channel 1312 is located on one side of the liquid cooling channel 1311, and at least one air cooling channel 1312 is located on the other side of the liquid cooling channel 1311.

[0122] Since the crossbeam 130 includes a cooling plate 132, i.e., a cooling channel is provided inside the crossbeam 130, it is more conducive to heat dissipation of the marine battery pack than placing the cooling plate 132 at the bottom of the marine battery pack, resulting in better cooling effect and higher heat dissipation efficiency.

[0123] At least two air-cooled channels 1312 are respectively arranged on both sides of the liquid-cooled channel 1311. The cooperation between the liquid-cooled channel 1311 and the air-cooled channel 1312 is beneficial to further improve the cooling effect and heat dissipation efficiency.

[0124] The liquid cooling channel 1311 removes heat through a circulating cooling medium; the air cooling channel 1312 assists in heat dissipation through flowing gas. Through the synergistic effect of the liquid cooling channel 1311 and the air cooling channel 1312, the battery cell 181 operates within a suitable temperature range.

[0125] By setting up multiple cooling channels (liquid cooling channel 1311 and air cooling channel 1312) within the crossbeam 130, the spatial layout is optimized, the cooling effect is ensured, and the heat dissipation efficiency is further improved. Since the cooling channels are located inside the crossbeam 130, compared to placing the cooling plate 132 at the bottom of the marine battery pack, the risk of leakage due to damage caused by collisions to the bottom of the marine battery pack can be effectively avoided.

[0126] Optionally, the cooling plate 132 is used to abut against the side wall of the battery cell 181, and a heat-conducting sheet 183 is provided between the cooling plate 132 and the side wall of the battery cell 181.

[0127] Inside the cooling plate 132, there are liquid cooling channels 1311 and air cooling channels 1312. The coolant inside the liquid cooling channel 1311 flows continuously under the drive of a circulating pump, carrying away the large amount of heat generated by the battery cell 181. The inner wall of the liquid cooling channel 1311 is smooth to reduce resistance to coolant flow and improve heat dissipation efficiency. The air cooling channel 1312 consists of multiple parallel micro-air channels distributed on both sides of the liquid cooling channel 1311. The design of these air channels has undergone rigorous fluid dynamics calculations to ensure uniform and smooth airflow, enhancing the heat dissipation effect.

[0128] The cooling plate 132 integrates a liquid cooling channel 1311 and an air cooling channel 1312, forming a dual cooling mechanism. The liquid cooling channel 1311 can quickly remove the large amount of heat generated by the battery cell 181, while the air cooling channel 1312 further assists in heat dissipation, enhancing the heat dissipation effect. Compared with a single cooling method, this dual cooling method is beneficial to significantly improve heat dissipation efficiency, ensuring that the battery cell 181 can be maintained within a suitable operating temperature range under various operating conditions, effectively extending the service life of the battery cell 181 and improving the performance stability of the battery pack.

[0129] The cooling channels (liquid cooling channel 1311 and air cooling channel 1312) are integrated into the cooling plate 132 of the crossbeam 130, making full use of the internal space of the battery pack and avoiding the space occupied by additional heat dissipation structures. This compact design improves the space utilization of the battery pack, allowing more cells 181 to be installed in a limited compartment space, thereby increasing the energy density of the marine battery pack and providing stronger power support for the vessel 200.

[0130] In some embodiments, optionally, such as Figure 1 , Figure 8 and Figure 9 As shown, the base plate 111 is provided with multiple positioning reinforcing ribs 112. The positioning reinforcing ribs 112 can greatly increase the structural strength of the base plate 111 and improve its resistance to deformation.

[0131] Optionally, the positioning reinforcing rib 112 is a long strip structure.

[0132] In one specific embodiment, the cross-sectional shape of the positioning reinforcing rib 112 is rectangular.

[0133] In one specific embodiment, the cross-sectional shape of the positioning reinforcing rib 112 is L-shaped.

[0134] By defining the structure or shape of the positioning reinforcing rib 112, it is ensured that the positioning reinforcing rib 112 is easy to process and easy to manufacture.

[0135] Optionally, the length directions of the multiple positioning reinforcing ribs 112 are consistent. In other words, the multiple positioning reinforcing ribs 112 are parallel to each other.

[0136] It should be noted that the positioning reinforcing ribs 112 are regularly distributed along the surface of the base plate 111 and are used to position and support the battery cell 181 and internal structural components (such as the crossbeam 130 and the longitudinal beam 140).

[0137] Optionally, such as Figure 1 , Figure 8 and Figure 9 As shown, the crossbeam 130 is provided on the positioning reinforcing rib 112, and the crossbeam 130 is connected to the base plate 111 through the positioning reinforcing rib 112. The number of crossbeams 130 is the same as the number of positioning reinforcing ribs 112. The first direction a is the length direction of the positioning reinforcing rib 112.

[0138] By setting up the positioning reinforcement rib 112, the installation accuracy of the crossbeam 130 can be improved.

[0139] Optionally, such as Figure 10As shown, one of the positioning reinforcing ribs 112 and the crossbeam 130 is provided with a first slot 151, and the other is provided with a first protrusion 152. The first protrusion 152 can be inserted into the first slot 151. Through the insertion and cooperation of the first protrusion 152 and the first slot 151, the crossbeam 130 can be quickly positioned, which helps to improve the installation accuracy of the crossbeam 130 and enhances the convenience of installation.

[0140] In a specific embodiment, such as Figure 10 and Figure 11 As shown, the first slot 151 is located on the side of the positioning reinforcing rib 112 opposite to the base plate 111, and the length direction of the first slot 151 is consistent with the length direction of the positioning reinforcing rib 112. Figure 10 and Figure 12 As shown, the first protrusion 152 is located on the side of the crossbeam 130 near the positioning reinforcing rib 112, and the length direction of the first protrusion 152 is consistent with the first direction a. The outline shape of the first protrusion 152 matches the outline shape of the first slot 151. During the process of connecting the crossbeam 130 and the positioning reinforcing rib 112, the first protrusion 152 and the first slot 151 cooperate to play a guiding role, thereby helping to reduce the installation difficulty and improve the installation accuracy of the crossbeam 130.

[0141] In one specific embodiment, a first protrusion 152 is located on the side of the positioning reinforcing rib 112 facing away from the base plate 111, and the length direction of the first protrusion 152 is consistent with the length direction of the positioning reinforcing rib 112. A first slot 151 is located on the side of the crossbeam 130 near the positioning reinforcing rib 112, and the length direction or opening direction of the first slot 151 is consistent with the first direction a. The outline shape of the first protrusion 152 matches the outline shape of the first slot 151. During the process of connecting the crossbeam 130 and the positioning reinforcing rib 112, the first protrusion 152 and the first slot 151 cooperate to play a guiding role, thereby helping to reduce the installation difficulty and improve the installation accuracy of the crossbeam 130.

[0142] Optionally, such as Figure 11 As shown, the first slot 151 has a first slot bottom 1511 (slot bottom wall) and a first slot opening 1512 disposed opposite to each other. The size of the first slot 151 gradually increases in the direction from the first slot bottom 1511 to the first slot opening 1512. The shape of the first protrusion 152 is adapted to the shape of the first slot 151. Figure 12As shown, the first protrusion 152 has a first abutting surface 1521 and a first connecting surface 1522 disposed opposite to each other. When the first protrusion 152 and the first slot 151 are engaged, the first abutting surface 1521 of the first protrusion 152 abuts against the first groove bottom 1511 of the first slot 151. The first connecting surface 1522 is used to connect the positioning reinforcing rib 112 or the crossbeam 130. The size of the first protrusion 152 gradually decreases in the direction from the first connecting surface 1522 to the first abutting surface 1521.

[0143] By setting the first slot 151 and the first protrusion 152 to a shape with a gradual change in size, it is beneficial to optimize the guiding effect. During the process of connecting the crossbeam 130 with the positioning reinforcing rib 112, it is beneficial to reduce the installation difficulty and improve the installation accuracy of the crossbeam 130.

[0144] It should be noted that when the first protrusion 152 is provided on the positioning reinforcing rib 112, the first connecting surface 1522 is used to connect the surface of the positioning reinforcing rib 112. When the first protrusion 152 is provided on the crossbeam 130, the first connecting surface 1522 is used to connect the surface of the crossbeam 130.

[0145] In one specific embodiment, the cross-sectional shape of the first slot 151 is trapezoidal, and the cross-sectional shape of the first protrusion 152 is trapezoidal, so that the shape of the first slot 151 matches the shape of the first protrusion 152.

[0146] Optionally, the edge of the first abutment surface 1521 is provided with a rounded transition surface. By providing a rounded transition surface, the guiding effect can be improved and the wear or collision between the first slot 151 and the first protrusion 152 can be reduced.

[0147] The first protrusion 152 and the first slot 151 cooperate to initially position the crossbeam 130, and then connect the crossbeam 130 to the side plate 113 to fix the crossbeam 130 relative to the frame structure 120. The crossbeam 130 and the side plate 113 are detachably connected, which facilitates the disassembly and assembly of the crossbeam 130 by workers and is beneficial for maintenance or replacement.

[0148] In some embodiments, optionally, such as Figure 13 As shown, the longitudinal beam 140 is provided with multiple second slots 141, and the positioning reinforcing ribs 112 can engage with the second slots 141. By setting the second slots 141, firstly, when the workers install the longitudinal beam 140, the second slots 141 can play a guiding role to a certain extent, which helps to reduce the installation difficulty; secondly, it helps to improve the installation accuracy of the longitudinal beam 140.

[0149] The second slot 141 and the positioning reinforcing rib 112 cooperate to initially position the longitudinal beam 140, and then connect the longitudinal beam 140 with the side plate 113 and the cross beam 130 so that the longitudinal beam 140 is relatively fixed to the frame structure 120.

[0150] In the technical solution defined by this utility model, the marine battery pack can be installed at any position on the bulkhead 210 of the ship 200, such as the side bulkhead 211 or the bottom bulkhead 212 of the bulkhead. This design eliminates the need for a separate battery compartment, which helps to free up cabin space, saves the cost of building a new battery compartment, and realizes the organic integration of the battery system with the ship 200.

[0151] By setting the positioning reinforcing rib 112, firstly, the structural strength of the frame structure 120 can be greatly increased, effectively preventing the marine battery pack from being squeezed and deformed; secondly, it helps to increase the contact area between the base plate 111 and the crossbeam 130 and the longitudinal beam 140, thereby improving the connection strength between the base plate 111 and the crossbeam 130 and the longitudinal beam 140; thirdly, the positioning reinforcing rib 112, the crossbeam 130 and the longitudinal beam 140 form a load-bearing system for the battery cell 181, avoiding stress concentration and thus providing stable support for the battery cell 181; fourthly, the positioning reinforcing rib 112 can play a certain role in the installation positioning of the crossbeam 130 and the longitudinal beam 140, which helps to improve the installation accuracy and installation efficiency of the crossbeam 130 and the longitudinal beam 140.

[0152] In some embodiments, the cooling plate 132 is optionally connected to the positioning reinforcing rib 112 via a first slot 151 and a first protrusion 152. The side of the cooling plate 132 opposite to the positioning reinforcing rib 112 is connected to the end reinforcing beam 133.

[0153] In a specific embodiment, such as Figure 9 As shown, the marine battery pack is wall-mounted on the side wall 211 of the hull. A crossbeam 130 and a longitudinal beam 140 form the supporting structure. The battery cell 181 lies on its side on the supporting structure, and the battery cell 181 transfers its weight to the positioning reinforcing rib 112 and the supporting structure (crossbeam 130 and longitudinal beam 140). At this point, the positioning reinforcing rib 112 can bear the load and also transfer the stress to the crossbeam 130 and longitudinal beam 140. The positioning reinforcing rib 112, crossbeam 130, and longitudinal beam 140 form the load-bearing system for the battery cell 181. This load-bearing system can be flexibly expanded according to the series or parallel connection of the battery cells 181, so that each battery cell 181 can be inserted into the corresponding battery cell placement space 1214, realizing a modular design for the battery cells 181 and saving space.

[0154] In a specific embodiment, such as Figure 8As shown, the marine battery pack is installed horizontally on the bottom wall 212 of the hull. The battery cells 181 are inserted upright into their corresponding placement spaces 1214. The weight of the battery cells 181 is transferred to the base plate 111, where the positioning reinforcing ribs 112 primarily serve to limit their movement. The crossbeams 130 and longitudinal beams 140 act as uprights, supporting the top cover 163. This installation method allows multiple marine battery packs to be stacked without the need for additional battery racks, thus saving on rack costs.

[0155] In some embodiments, optionally, such as Figure 7 As shown, the air-cooled channel 1312 includes a plurality of parallel gas channels 1314; in the same air-cooled channel 1312, two adjacent gas channels 1314 are separated by a partition sidewall 1315.

[0156] Multiple gas channels 1314 within the air-cooled channel 1312 are closely arranged along a specific direction and are parallel to each other. The cross-sectional shape of each gas channel 1314 is generally designed as rectangular or circular, optimized according to fluid dynamics principles to ensure that the resistance of gas flow within the channel is minimized.

[0157] Multiple parallel gas channels 1314 significantly increase the heat exchange area with the battery cell 181. As gas flows within these channels, it can more effectively absorb the heat generated by the battery cell 181. Compared to a single large-channel design, the multi-parallel channel structure significantly improves heat dissipation efficiency.

[0158] The parallel gas channels 1314 ensure more uniform gas flow around the battery cell 181, avoiding uneven heat dissipation in certain areas. Each battery cell 181 receives a relatively consistent cooling effect, thus ensuring temperature uniformity among the individual cells 181 within the marine battery pack.

[0159] By setting the partition sidewall 1315, it is ensured that the two adjacent gas channels 1314 are independent of each other, effectively preventing airflow from crossing between adjacent gas channels 1314, and allowing the gas in each gas channel 1314 to flow independently and in an orderly manner. With this design, the gas can more fully absorb the heat dissipated by the battery cell 181, thereby significantly improving heat dissipation efficiency.

[0160] Since each gas channel 1314 can independently perform heat dissipation, the temperature distribution on the surface of the cell 181 is more uniform, avoiding local overheating or overcooling caused by airflow crosstalk, and ensuring the temperature consistency of each cell 181 in the battery pack.

[0161] In some embodiments, optionally, such as Figure 6As shown, the crossbeam 130 also includes a first sealing plate 1341 and a second sealing plate 1342. The first sealing plate 1341 is disposed at one end of the cooling plate 132 in the first direction a, and is connected to the bottom plate 111, the side plate 113, and the cooling plate 132. Specifically, the first sealing plate 1341 is connected to the bottom plate 111, the side plate 113, and the cooling plate 132.

[0162] The second sealing plate 1342 is disposed at the other end of the cooling plate 132 in the first direction a, and the second sealing plate 1342 is connected to the bottom plate 111, the side plate 113 and the cooling plate 132. Specifically, the second sealing plate 1342 is connected to the bottom plate 111, the second sealing plate 1342 is connected to the side plate 113, and the second sealing plate 1342 is connected to the cooling plate 132.

[0163] The first sealing plate 1341 and the second sealing plate 1342 are used to block the liquid cooling channel 1311.

[0164] Optionally, the first sealing plate 1341 is disposed on the positioning reinforcing rib 112, and the first sealing plate 1341 is connected to the base plate 111 through the positioning reinforcing rib 112. Optionally, the first sealing plate 1341 and the positioning reinforcing rib 112 are connected through the first slot 151 and the first protrusion 152.

[0165] Optionally, the first sealing plate 1341 and the side plate 113 are detachably connected, which makes it convenient for staff to disassemble and assemble the first sealing plate 1341, and facilitates maintenance or replacement.

[0166] In one specific embodiment, the first sealing plate 1341 and the side plate 113 are detachably connected by bolts, pins or other types of connectors.

[0167] In one specific embodiment, the first sealing plate 1341 and the side plate 113 are fixedly connected by adhesive.

[0168] Optionally, the first sealing plate 1341 and the cooling plate 132 are detachably connected, which makes it convenient for staff to disassemble and install the first sealing plate 1341, and facilitates maintenance or replacement.

[0169] In one specific embodiment, the first sealing plate 1341 and the cooling plate 132 are detachably connected by bolts, pins or other types of connectors.

[0170] In one specific embodiment, the first sealing plate 1341 and the cooling plate 132 are fixedly connected by adhesive bonding.

[0171] Optionally, the second sealing plate 1342 is disposed on the positioning reinforcing rib 112, and the second sealing plate 1342 is connected to the base plate 111 through the positioning reinforcing rib 112. Optionally, the second sealing plate 1342 and the positioning reinforcing rib 112 are connected through the first slot 151 and the first protrusion 152.

[0172] Optionally, the second sealing plate 1342 and the side plate 113 are detachably connected, which makes it convenient for staff to disassemble and install the second sealing plate 1342, and facilitates maintenance or replacement.

[0173] In one specific embodiment, the second enclosure plate 1342 and the side plate 113 are detachably connected by bolts, pins or other types of connectors.

[0174] In one specific embodiment, the second sealing plate 1342 and the side plate 113 are fixedly connected by adhesive.

[0175] Optionally, the second sealing plate 1342 and the cooling plate 132 are detachably connected, which makes it convenient for staff to disassemble and install the second sealing plate 1342, and facilitates maintenance or replacement.

[0176] In one specific embodiment, the second sealing plate 1342 and the cooling plate 132 are detachably connected by bolts, pins or other types of connectors.

[0177] In one specific embodiment, the second sealing plate 1342 and the cooling plate 132 are fixedly connected by adhesive bonding.

[0178] The two sealing plates (first sealing plate 1341 and second sealing plate 1342) are sealed to the cooling plate 132, effectively preventing coolant leakage from both ends of the liquid cooling channel 1311, ensuring the normal operation of the cooling system and avoiding a decrease in heat dissipation performance due to coolant leakage. Furthermore, the two sealing plates can improve the rigidity and stability of the crossbeam 130 while sealing the liquid cooling channel 1311. During the voyage of the ship 200, the battery pack will be subjected to various vibrations and impacts. The first sealing plate 1341 and the second sealing plate 1342 can disperse these external forces, reducing the risk of deformation of the crossbeam 130 and ensuring the safety of the battery cell 181 and other components.

[0179] It should be noted that the two sealing plates, acting as a sealing structure, ensure the normal circulation of coolant within the liquid cooling channel 1311, allowing the coolant to fully absorb the heat generated by the battery cell 181 and improving heat dissipation efficiency. At the same time, the presence of the sealing plates also prevents heat from dissipating from the cooling channel into the surrounding environment, further optimizing the heat dissipation effect.

[0180] In some embodiments, optionally, such as Figure 6 and Figure 7As shown, the crossbeam 130 also includes an end reinforcing beam 133. The end reinforcing beam 133 is connected to the side of the cooling plate 132 opposite to the bottom plate 111.

[0181] Optionally, the cooling plate 132 of the crossbeam 130 is disposed on the positioning reinforcing rib 112, and the cooling plate 132 is connected to the base plate 111 through the positioning reinforcing rib 112.

[0182] Optionally, the cooling plate 132 is connected to the positioning reinforcing rib 112 via a first slot 151 and a first protrusion 152. The side of the cooling plate 132 facing away from the positioning reinforcing rib 112 is connected to the end reinforcing beam 133.

[0183] By incorporating end reinforcing beams 133, the structural strength of the crossbeam 130 can be increased, enhancing its resistance to deformation. This allows the crossbeam 130 to withstand the stacked load on top of the marine battery pack, preventing the cooling plate 132 from bending and deforming due to the weight of the battery cell 181 or external impacts. When the battery cell 181 is installed on its side, the end reinforcing beams 133 bear a portion of the lateral load, ensuring the structural stability of the crossbeam 130 during the rolling of the ship 200. The end reinforcing beams 133 are tightly connected to the cooling plate 132, assisting in the conduction of heat from the battery cell 181. Especially in the event of a liquid cooling system failure, they serve as a backup heat dissipation channel, preventing the battery cell 181 from overheating.

[0184] Optionally, the end reinforcing beam 133 and the cooling plate 132 are detachably connected, which facilitates the disassembly and assembly of the end reinforcing beam 133 and the cooling plate 132 by the staff, and is beneficial for maintenance or replacement.

[0185] In some embodiments, the first sealing plate 1341, the end reinforcing beam 133, and the second sealing plate 1342 may be an integral structure.

[0186] Compared to post-processing methods (welding or bonding), this design method has better mechanical properties and higher connection strength, which helps to reduce the number of parts and improve assembly efficiency.

[0187] It should be noted that because the first sealing plate 1341, the end reinforcing beam 133, and the second sealing plate 1342 are integrated structures, the gaps and weak points that may exist in traditional connection methods are eliminated, greatly improving the overall strength and stability of the crossbeam 130. During the voyage of the ship 200, the battery pack will be subjected to various complex external forces, such as vibration, impact, and swaying. The integrated structure can better withstand these external forces, reducing the risk of structural deformation and damage.

[0188] It should be noted that since the crossbeam 130 includes a cooling plate 132, which has multiple cooling channels (liquid cooling channel 1311 and air cooling channel 1312) inside, the crossbeam 130 also has functions such as support, water cooling, heat insulation and buffering.

[0189] In the technical solution of this utility model, it is not necessary to place the cooling plate 132 at the bottom of the battery box (marine battery pack). Instead, the cooling plate 132 is placed inside the crossbeam 130, and the longitudinal beam 140 is provided with a through groove for the cooling plate 132 to pass through, which is beneficial to improve the cooling effect and increase the space utilization rate.

[0190] In one specific embodiment, two cells 181 are arranged within each cell placement space 1214. This design allows two rows of cells 181 to share a single cooling plate 132, which optimizes the spatial layout. Compared to a single row of cells 181 sharing a single cooling plate 132, this reduces the number of cooling plates 132, lowers the BOM (Bill of Materials) cost, makes the marine battery pack lighter, facilitates heat dissipation during fast charging and discharging of the cells 181, and effectively supports high-rate charging and discharging.

[0191] In some embodiments, the end reinforcing beam 133 may optionally be provided with weight-reducing holes. By providing weight-reducing holes, it is possible to reduce weight while maintaining bending strength.

[0192] In some embodiments, the surface of the end reinforcing beam 133 may be designed as a flow-guiding slope (with an inclination angle of 15 to 30 degrees) to guide the airflow of the cabin through the crossbeam 130 and enhance the heat dissipation efficiency of the air-cooled channel 1312.

[0193] In some embodiments, optionally, such as Figure 5 As shown, the marine battery pack also includes a connecting assembly 115. The connecting assembly 115 is located on the side plate 113 and is used to connect to the bulkhead 210. One side of the bottom plate 111 abuts against the bulkhead 210.

[0194] Optionally, the side of the bottom plate 111 that is away from the positioning reinforcement rib 112 abuts against the bulkhead 210.

[0195] By setting the connecting component 115, it is beneficial to improve the connection strength between the frame structure 120 and the bulkhead 210 when they are connected, and it can also avoid directly opening holes in the side plate 113, which helps to ensure the structural strength of the side plate 113.

[0196] Optionally, the side plate 113 can be detachably connected to the bulkhead 210 via the connecting assembly 115, which facilitates the disassembly and assembly of the frame structure 120 by the staff and can also improve the connection strength between the side plate 113 and the bulkhead 210 when they are connected.

[0197] Optionally, the connecting assembly 115 includes a lug plate 1151, which is connected to the side plate 113. The lug plate 1151 has a connecting hole. One side of the lug plate 1151 can abut against the bulkhead 210. The connecting assembly 115 also includes a connector. The connector passes through the connecting hole in the lug plate 1151, and at least a portion of the connector is located within the bulkhead 210, thereby enabling a detachable connection between the lug plate 1151 and the bulkhead 210, and consequently, a detachable connection between the frame structure 120 and the bulkhead 210.

[0198] Alternatively, the connector may be a bolt, pin, or screw.

[0199] When the connector is a screw, the screw passes through the connection hole, and a portion of the screw protruding from the connection hole can be threadedly connected to the bulkhead 210 to achieve a detachable connection between the lug plate 1151 and the bulkhead 210.

[0200] By adding ear plates 1151 and setting the connection holes on ear plates 1151, it is not necessary to open connection holes on the side plates 113 of the frame structure 120, which helps to ensure the structural strength of the side plates 113.

[0201] In one specific embodiment, the ear plate 1151 and the side plate 113 are fixedly connected by welding, which is simple, convenient and quick to process.

[0202] In one specific embodiment, the ear plate 1151 and the side plate 113 are an integral structure. Compared with post-processing methods (such as welding), it has better mechanical properties and higher connection strength, which helps to reduce the number of parts and improve assembly efficiency.

[0203] In some embodiments, optionally, such as Figure 1 , Figure 8 and Figure 9 As shown, the marine battery pack (cell-isolated marine battery pack 100) also includes a top cover 163. The top cover 163 closes onto the opening 1213 of the frame structure 120. When the top cover 163 and the frame structure 120 are connected, the top cover 163 and the frame structure 120 are in a sealed connection.

[0204] Optionally, the top cover 163 and the frame structure 120 are detachably connected, which makes it convenient for staff to disassemble and assemble the top cover 163, and facilitates the placement and removal of the battery cell 181 or electronic components in the frame structure 120.

[0205] When the top cover 163 and the frame structure 120 are connected, the top cover 163 and the frame structure 120 are sealed to prevent water, dust and other impurities from entering.

[0206] Optionally, the marine battery pack also includes a sealing gasket. The sealing gasket is located between the top cover 163 and the frame structure 120, and its main function is to provide a seal.

[0207] By setting the top cover 163, and ensuring that the top cover 163 is sealed to the frame structure 120, water, dust and other impurities can be largely prevented from entering, thus ensuring the reliability of the marine battery pack.

[0208] In one embodiment according to the present invention, such as Figure 8 and Figure 9 As shown, the vessel 200 includes a bulkhead 210 and a marine battery pack (cell-isolated marine battery pack 100) as described in any of the above embodiments. The marine battery pack is connected to the bulkhead 210.

[0209] The bulkhead 210 of vessel 200 is either a side bulkhead 211 or a bottom bulkhead 212. Marine battery packs are wall-mounted to the side bulkhead 211 (e.g., ...). Figure 9 (as shown); or, the marine battery pack is installed horizontally on the bottom wall 212 of the hull (as shown). Figure 8 (As shown).

[0210] Since the vessel 200 includes the marine battery pack (cell-isolated marine battery pack 100) in any of the above embodiments, it has the beneficial effects of any of the above embodiments, which will not be repeated here.

[0211] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0212] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit 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 utility model.

[0213] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0214] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electrically isolated marine battery pack of cells, characterized in that, A battery pack for a ship, the battery pack comprising: a frame structure (120) connected to a bulkhead (210) of the ship, the frame structure (120) having a plurality of cell placement spaces (1214); a plurality of cells (181) disposed in the cell placement spaces (1214); each of the cell placement spaces (1214) is configured to accommodate at least two of the cells (181); in the same cell placement space (1214), a buffer interlayer (184) is disposed between two adjacent cells (181); the buffer interlayer (184) is composed of a thermal insulation layer (1841) and an expansion compensation layer (1842); the thermal insulation layer (1841) and / or the expansion compensation layer (1842) abut against the cells (181).

2. The electrically isolated marine battery pack of claim 1, wherein, two adjacent cells (181) are provided with one thermal insulation layer (1841) and two expansion compensation layers (1842), the thermal insulation layer (1841) is disposed between the two expansion compensation layers (1842), and the expansion compensation layers (1842) abut against the cells (181); or two adjacent cells (181) are provided with one expansion compensation layer (1842) and two thermal insulation layers (1841), the expansion compensation layer (1842) is disposed between the two thermal insulation layers (1841), and the thermal insulation layers (1841) abut against the cells (181); or two adjacent cells (181) are provided with one expansion compensation layer (1842) and one thermal insulation layer (1841), the expansion compensation layer (1842) abuts against one of the cells (181), and the thermal insulation layer (1841) abuts against the other cell (181).

3. The electrically isolated marine battery pack of claim 1, wherein, The thickness of the buffer interlayer (184) is 0.5mm to 4mm.

4. The electrically isolated marine battery pack of any one of claims 1 to 3, wherein, The frame structure (120) has a cavity (121); the battery pack further comprises: a plurality of crossbeams (130) disposed in the cavity (121) along a first direction, the crossbeams (130) being connected to the frame structure (120); at least one longitudinal beam (140) disposed in the cavity (121) along a second direction, the longitudinal beam (140) being connected to the frame structure (120) and the crossbeams (130), the second direction being different from the first direction; at least one of the longitudinal beams (140) and a plurality of the crossbeams (130) divide the cavity (121) into a plurality of the cell placement spaces (1214); the cells (181) abut against the crossbeams (130), the longitudinal beams (140), and the frame structure (120).

5. The electrically isolated marine battery pack of claim 4, wherein, The frame structure (120) comprises: a bottom plate (111); a plurality of side plates (113) connected to the bottom plate (111), the plurality of side plates (113) and the bottom plate (111) enclosing the cavity (121); The cross beam (130) is connected with the bottom plate (111) and the side plate (113); the longitudinal beam (140) is connected with the bottom plate (111), the side plate (113) and the cross beam (130); At least one side plate (113) is used for connecting the bulkhead (210), and the bottom plate (111) is used for abutting against the bulkhead (210).

6. The electrically isolated marine battery pack of claim 4, wherein, A heat conduction sheet (183) is arranged on the side wall of the electric core (181), and the electric core (181) abuts against the cross beam (130) through the heat conduction sheet (183).

7. The electrically isolated marine battery pack of claim 4, wherein, The cross beam (130) comprises a cooling plate (132), and the cooling plate (132) is internally provided with a liquid cooling channel (1311) and at least two air cooling channels (1312); at least one air cooling channel (1312) is arranged on one side of the liquid cooling channel (1311), and at least one air cooling channel (1312) is arranged on the other side of the liquid cooling channel (1311).

8. The electrically isolated marine battery pack of claim 7, wherein, The air cooling channel (1312) comprises a plurality of parallel gas channels (1314); in the same air cooling channel (1312), two adjacent gas channels (1314) are separated by a separation side wall (1315).

9. The electrically isolated marine battery pack of any one of claims 1 to 3, wherein, Further comprising: An upper cover (163) is arranged on the opening (1213) of the frame structure (120); when the upper cover (163) and the frame structure (120) are in a connected state, the upper cover (163) and the frame structure (120) are in a sealed connection.

10. The electrically isolated marine battery pack of claim 5, wherein, Further comprising: A connecting assembly (115) is arranged on the side plate (113), and the connecting assembly (115) is used for connecting the bulkhead (210); One side of the bottom plate (111) abuts against the bulkhead (210).

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