Multifunctional power supply device and ship

Abstract

The invention discloses a multifunctional power supply device and a ship. The multifunctional power supply device comprises a protection box, a shell, a battery assembly, an air bag assembly and a hose assembly, wherein the protection box is provided with a hollow first cavity; the shell is located in the first cavity, and the shell is provided with a hollow second cavity; the battery assembly is embedded in the second cavity and abuts against the shell. The air bag assembly is located between the protection box and the shell and has elasticity. The other end of the hose assembly sequentially penetrates through the shell and the protection box to be communicated with the outside. The air bag assembly is arranged between the protection box and the shell, the ventilation function is achieved, heat energy generated by the battery assembly in the shell can be conveniently spread to the outside, and energy consumption is reduced. The protection box can serve as an anti-impact protection structure, the air bag assembly buffers and dampens the shell and drives the hose assembly to ventilate, and the hose assembly not only exchanges heat, but also can buffer the interior of the battery assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of ship power supply, and in particular to a multifunctional power supply device and a ship. Background Art

[0002] The existing power supply device is equipped with a shell, an energy storage unit and a distribution unit. The shell can protect the energy storage unit located therein. The energy storage unit is used to store electrical energy. Most of them provide electrical energy through a power module formed by a combination of multiple battery cells, and can supply power to electrical equipment through the distribution unit arranged on the shell.

[0003] When the power supply device is used in harsh environments such as sailing, the service life of the power supply device is usually short. The reason is that during the voyage, the ship is severely bumpy, and the battery cells in the power supply device are susceptible to strong impacts, which affects the service life of the battery cells. For example, an impact-resistant power supply device proposed in the invention patent with application number CN202210444823.8. Although the impact can be mitigated, it needs to be equipped with a refrigerator to dissipate the heat of the battery, which consumes additional energy, and the shock absorption effect needs to be improved.

[0004] In summary, existing ship power supply devices have technical problems such as short life, high energy consumption and poor shock absorption effect. Summary of the invention

[0005] The purpose of this application is to overcome the above technical deficiencies, propose a multifunctional power supply device and a ship, and solve the technical problems of short life, high energy consumption and poor shock absorption effect of the power supply device in the prior art.

[0006] In order to achieve the above technical objectives, this application adopts the following technical solutions: In a first aspect, the present application provides a multifunctional power supply device, including a protective box, a housing, a battery assembly, an airbag assembly, and a hose assembly: A protection box, the protection box having a hollow first cavity; A housing, the housing being located in the first cavity and having a hollow second cavity; A battery assembly, wherein the battery assembly is embedded in the second cavity and abuts against the housing; An airbag assembly, the airbag assembly is located between the protection box and the shell and has elasticity; A hose assembly, one end of which is connected to the airbag assembly, and the other end of which passes through two sides of the shell and one side of the protection box in sequence to be connected to the outside.

[0007] In some embodiments of the present application, the battery assembly includes a plurality of battery cells and a plurality of connection blocks, the plurality of battery cells are parallel to each other, both ends of each battery cell are connected to the connection block, and the connection block abuts against the housing.

[0008] In some embodiments of the present application, the battery assembly further includes a magnetic attraction component, which is located between two adjacent connection blocks and is magnetically connected to the connection blocks.

[0009] In some embodiments of the present application, the airbag assembly includes a first airbag, and the hose assembly includes a first hose. The first airbag is adjacent to the end of the battery cell, and the first hose extends in a direction parallel to the axial direction of the battery cell and passes through the longitudinal gaps between two adjacent battery cells, and the connecting block is connected to the first airbag.

[0010] In some embodiments of the present application, the airbag assembly includes a second airbag, and the hose assembly includes a second hose. The second airbag is adjacent to the side wall of the battery cell, and the second hose extends in a direction perpendicular to the axial direction of the battery cell and passes through the lateral gap between two adjacent battery cells to communicate with the second airbag.

[0011] In some embodiments of the present application, a plurality of first through holes are formed on the side wall of the protection box, and the first hose and the second hose pass through the first through holes.

[0012] In some embodiments of the present application, a connector is further included, a plurality of second through holes are opened on the side wall of the shell, the connector is embedded in the second through holes, and the first hose and the second hose pass through the connector and are connected to the connector.

[0013] In some embodiments of the present application, the airbag assembly further includes an annular spring sheet, the inner sides of the first airbag and the second airbag have an annular groove, and the annular spring sheet is embedded in the annular groove.

[0014] In some embodiments of the present application, the hose assembly includes a one-way valve unit, which is arranged at the pipe openings of the first hose and the second hose. The one-way valve unit includes an intake valve and an exhaust valve, and the intake valve and the exhaust valve are opened or closed in one direction according to the internal and external pressure difference.

[0015] In a second aspect, the present application further provides a ship, comprising a hull and a multifunctional power supply device as described in any one embodiment of the first aspect, wherein the multifunctional power supply device is installed on the hull.

[0016] Compared with the prior art, the technical solution provided by this application has the following beneficial technical effects: The present application arranges an airbag assembly between the protective box and the outer shell. When the power supply device is in an undulating state, the outer shell moves relative to the protective box. At this time, the outer shell squeezes the airbag assembly, and the airbag assembly squeezes out the gas through the hose assembly. When the squeezing force disappears, the airbag assembly tends to reset, and can re-inhale the outside air through the hose assembly to achieve the ventilation function, thereby facilitating the heat energy generated by the battery assembly in the outer shell to be dissipated to the outside, using the bumps as power to achieve heat exchange, replacing the refrigerator, and saving energy. When the power supply device is impacted, the protective box can be used as an impact-resistant protective structure to prevent the battery assembly in the outer shell from being directly damaged. The airbag assembly not only has the function of buffering and shock absorbing the outer shell, but also has the function of driving the hose assembly for ventilation. The hose assembly not only has a heat exchange function, but also can serve as a buffer structure in the battery assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution in this application, the following is a brief introduction to the drawings required for use in the embodiments: Figure 1 is a vertical cross-sectional view of a multifunctional power supply device provided in an embodiment of the present application; Figure 2 is a horizontal cross-sectional view of a multifunctional power supply device provided in an embodiment of the present application; Figure 3 is a bottom view schematic diagram of a multifunctional power supply device provided in an embodiment of the present application; Figure 4 It is a top view schematic diagram of a multifunctional power supply device provided in an embodiment of the present application.

[0018] Reference numerals: Protective box 1, housing 2, battery assembly 3, airbag assembly 4, hose assembly 5, connector 6; The connecting block 31, the third through hole 311, the fourth through hole 312, and the battery cell 32; The first airbag 41 , the second airbag 42 , the first hose 51 , and the second hose 52 . DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] Those skilled in the art will appreciate that in this specification, the wording "including" is an open-ended expression, which means that the described features exist but does not exclude other features. The directional words "up", "down", "left", "right", etc. are exemplary directions based on the drawings. Features defined as "first" and "second" implicitly include one or more of the features. Singular expressions can also be used in the plural. "Multiple" means two or more. The terms "installed", "connected", and "connected" can be fixed connections, detachable connections, or integrated connections; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. In addition, "connected" can include wireless connections.

[0021] The purpose of this application is to overcome the above technical deficiencies, propose a multifunctional power supply device and a ship, and solve the technical problems of short life, high energy consumption and poor shock absorption effect of the power supply device in the prior art.

[0022] In order to achieve the above technical objectives, this application adopts the following technical solutions: In a first aspect, the present application provides a multifunctional power supply device, such as Figure 1 As shown, Figure 1 It is a vertical cross-sectional view of a multifunctional power supply device provided in an embodiment of the present application.

[0023] A multifunctional power supply device includes a protective box 1, a housing 2, a battery assembly 3, an airbag assembly 4 and a hose assembly 5: The protective box 1 has a hollow first cavity; the protective box 1 serves as an outer protective structure of the outer shell 2. When the power supply device is subjected to external impact, the protective box 1 can absorb part of the impact force to protect the inner outer shell 2 and battery assembly 3 from damage.

[0024] A housing 2, wherein the housing 2 is located in the first cavity and has a hollow second cavity; A battery assembly 3, wherein the battery assembly 3 is embedded in the second cavity and abuts against the housing 2; The airbag assembly 4 is located between the protection box 1 and the shell 2 and has elasticity; when the shell 2 and the protection box 1 generate relative movement, the airbag assembly 4 located between the two is squeezed, and the airbag assembly 4 acts as a shock absorber for the shell 2.

[0025] A hose assembly 5, one end of which is connected to the airbag assembly 4, and the other end of which passes through two sides of the shell 2 and one side of the protection box 1 in sequence to be connected to the outside.

[0026] The present application sets an airbag assembly 4 between the protective box 1 and the outer shell 2. When the power supply device is in an undulating state, the outer shell 2 moves relative to the protective box 1. At this time, the outer shell 2 squeezes the airbag assembly 4, and the airbag assembly 4 squeezes out the gas through the hose assembly 5. When the squeezing force disappears, the airbag assembly 4 tends to reset, and can re-inhale the outside air through the hose assembly 5 to achieve the ventilation function, thereby facilitating the heat energy generated by the battery assembly 3 in the outer shell 2 to be dissipated to the outside, using the bumps as power to achieve heat exchange, replacing the refrigerator, and saving energy. When the power supply device is impacted, the protective box 1 can be used as an anti-impact protection structure to prevent the battery assembly 3 in the outer shell 2 from being directly damaged. The airbag assembly 4 not only has the function of buffering and shock absorbing the outer shell 2, but also has the function of driving the hose assembly 5 for ventilation. The hose assembly 5 not only has a heat exchange function, but also can serve as a buffer structure in the battery assembly 3.

[0027] In some embodiments of the present application, the battery assembly 3 includes multiple battery cells 32 and multiple connecting blocks 31. The multiple battery cells 32 are parallel to each other, and both ends of each battery cell 32 are connected to the connecting block 31. The connecting block 31 abuts against the outer shell 2.

[0028] The battery assembly 3 is composed of a plurality of battery cells 32 , which are arranged in parallel with each other, so that space can be effectively utilized while maintaining the structural stability of the battery assembly 3 .

[0029] Both ends of each battery cell 32 are connected to the connection block 31. The function of the connection block 31 is to fix the battery cell 32. The design of the connection block 31 can ensure the stability of the connection between the battery cells 32, reduce the risk of short circuit caused by displacement or vibration of the battery cell 32, and improve the safety of the battery assembly 3.

[0030] The connecting block 31 is directly in contact with the outer shell 2, so that the heat generated by the battery assembly 3 can be quickly transferred to the outer shell 2 and dissipated through the outer shell 2, which helps to dissipate the heat of the battery assembly 3 and prolong the battery life. The outer shell 2 provides an additional protective layer for the battery assembly 3. When the power supply device is subjected to external impact, the outer shell 2 can absorb part of the impact force and protect the internal battery cells 32 from damage.

[0031] In some embodiments of the present application, the battery assembly 3 further includes a magnetic attraction component, which is located between two adjacent connection blocks 31 and is magnetically connected to the connection blocks 31 .

[0032] Each group of connection blocks 31 includes two connection blocks 31, and a plate structure is formed at both ends of the same battery cell 32, and the plate structure abuts against the inner wall of the housing 2. This structure can ensure that the battery cell 32 remains stable inside the battery assembly 3 and is not easily displaced.

[0033] A plurality of connection blocks 31 are provided at the same end of different battery cells 32, and adjacent two connection blocks 31 are flexibly connected via magnetic members. This connection method can not only maintain the relative positions of the battery cells 32, but also provide a certain buffering effect when subjected to external impacts. Since the connection provided by the magnetic members is flexible, when the battery assembly 3 is subjected to external impacts, the magnetic members can absorb part of the impact energy, reduce the force transmitted to the battery cells 32, and thus play a role in shock absorption and protection.

[0034] As Figure 2 shown, Figure 2 is a horizontal cross-sectional view of a multifunctional power supply device provided by an embodiment of the present application.

[0035] In some embodiments of the present application, the airbag assembly 4 includes a first airbag 41, the hose assembly 5 includes a first hose 51, the first airbag 41 is adjacent to the end of the battery cell 32, the first hose 51 extends along a direction parallel to the axial direction of the battery cell 32 and passes through the longitudinal gap between adjacent two battery cells 32, and the connection block 31 is communicated with the first airbag 41.

[0036] The first hose 51 extends longitudinally along the battery cell 32 and is disposed through two connection blocks 31 on the battery cell 32. One end of the first hose 51 passes through the protection box 1 and is communicated with the first airbag 41. One side of the first airbag 41 is fixedly connected to the housing 2 and the other side abuts against the protection box 1. The other end of the first hose 51 extends out of the protection box 1.

[0037] The design of the first hose 51 and the first airbag 41 allows the battery assembly 3 to achieve natural heat dissipation through the external bumpy movement without the need for additional energy sources, saving energy consumption. When the first airbag 41 is squeezed, it can play a buffering role and reduce the risk of damage to the battery cell 32 due to impacts. The first hose 51 extends longitudinally along the battery cell 32, effectively utilizing the internal space of the battery assembly 3 and making the overall structure more compact. Through the air exchange mechanism of the first hose 51 and the first airbag 41, the internal temperature of the battery assembly 3 can be effectively reduced, reducing the safety hazards caused by overheating. This design is applicable to a variety of bumpy environments, such as vehicle-mounted and ship-mounted, and can adapt to different usage scenarios.

[0038] Among them, four first hoses 51 penetrate through each connection block 31, and the four first hoses 51 are respectively disposed at the four corners of the connection block 31. The four first hoses 51 passing through the connection block 31 form a longitudinal hose group. The number of longitudinal hose groups is multiple, and the multiple longitudinal hose groups correspond to the multiple battery cells 32 one by one, and the number of airbags is multiple.

[0039] As Figure 3 and Figure 4 As shown, Figure 3 is a bottom view schematic diagram of a multifunctional power supply device provided in an embodiment of the present application; Figure 4 It is a top view schematic diagram of a multifunctional power supply device provided in an embodiment of the present application.

[0040] In order to achieve a bidirectional damping and heat exchange effect, in one embodiment, a plurality of airbags are staggered on opposite sides of the housing 2 in a direction perpendicular to the first hose 51. A third through hole 311 connected to one end of the battery cell 32 is formed at the center of the connection block 31, and four fourth through holes 312 for four first hoses 51 to pass through are formed at the four corners of the connection block 31. The first airbag 41 is connected to the plurality of first hoses 51 on the same side.

[0041] In some embodiments of the present application, the airbag assembly 4 includes a second airbag 42, and the hose assembly 5 includes a second hose 52. The second airbag 42 is adjacent to the side wall of the battery cell 32, and the second hose 52 extends in a direction perpendicular to the axial direction of the battery cell 32 and passes through the lateral gap between two adjacent battery cells 32 to communicate with the second airbag 42.

[0042] The second hose 52 extends in a direction perpendicular to the battery cell 32 and is arranged to pass through the gap between two adjacent battery cells 32. One end of the second hose 52 passes through the protective box 1 and is connected to the second airbag 42. One side of the second airbag 42 is fixedly connected to the outer shell 2, and the other side abuts against the protective box 1. The other end of the second hose 52 passes through the outside of the protective box 1.

[0043] There are multiple second hoses 52 arranged in an array along the axial direction and radial direction of the battery cell 32 , and there are multiple second airbags 42 . The multiple second hoses 52 are alternately arranged on both sides of the housing 2 along the radial direction of the battery cell 32 .

[0044] The arrangement of multiple second hoses 52 and second airbags 42 increases the heat dissipation area and heat dissipation channel of the battery assembly 3, thereby improving the heat dissipation efficiency. The design of the second airbag 42 and the second hose 52 allows for buffering in multiple directions, further reducing the risk of damage to the battery cell 32 when impacted. The array arrangement of multiple second hoses 52 and second airbags 42 helps to form a uniform pressure distribution inside the housing 2, thereby avoiding the problem of excessive local pressure. Through effective heat dissipation and buffering, the risk of battery overheating and physical damage is reduced, thereby improving the overall safety of the power supply device.

[0045] In some embodiments of the present application, a plurality of first through holes are formed on the side wall of the protection box 1 , and the first hose 51 and the second hose 52 pass through the first through holes.

[0046] A plurality of first through holes are formed in the side wall of the protection box 1, and these through holes are used to allow the first hose 51 and the second hose 52 to pass through the protection box 1, so as to connect the inner housing 2 with the external environment. After the first hose 51 and the second hose 52 pass through the first through holes, heat exchange channels can be formed inside and outside the protection box 1. These channels allow the internal and external air to flow, so as to achieve heat transfer and heat dissipation.

[0047] The first airbag 41 is connected to the outside through the first hose 51, and the second airbag 42 is connected to the outside through the second hose 52. When the power supply device operates in a bumpy environment, the compression and expansion of the airbag can drive the air to flow through the hose, realizing heat exchange and heat dissipation.

[0048] In some embodiments of the present application, it further includes a connector 6. A plurality of second through holes are formed in the side wall of the housing 2, and the connector 6 is embedded in the second through holes. The first hose 51 and the second hose 52 pass through the connector 6 and are connected to the connector 6.

[0049] The connectors 6 are embedded in a plurality of second through holes in the side wall of the housing 2, and these connectors 6 are used to connect the first hose 51 and the second hose 52. The connector 6 provides a more stable connection between the hose and the housing 2, reducing the loosening of the connection caused by vibration or impact.

[0050] The first hose 51 and the second hose 52 pass through the connector 6 and are connected to the internal structure of the connector 6, so as to realize the sealing and fixing between the hose and the housing 2. The design of the connector 6 helps to improve the sealing performance when the hose passes through the housing 2, protecting the internal battery assembly 3 from the external environment.

[0051] The design of the connector 6 ensures the sealing performance when the hose passes through the housing 2, prevents external impurities from entering the inside of the battery assembly 3, and at the same time provides a guiding function for the hose to keep its correct position.

[0052] In some embodiments of the present application, the airbag assembly 4 further includes an annular elastic sheet. The inner sides of the first airbag 41 and the second airbag 42 have annular grooves, and the annular elastic sheet is embedded in the annular grooves.

[0053] The materials of the first airbag 41 and the second airbag 42 are made of high-elasticity silica gel or TPU film, meeting the anti-tearing property under repeated deformation. Cylindrical or ellipsoidal, with an annular elastic sheet installation groove reserved inside. As a container for gas storage and release, the volume change is realized through deformation.

[0054] The material of the annular elastic sheet is made of 304 stainless steel or nickel-titanium shape memory alloy. It is embedded in the annular groove preset on the inner wall of the airbag and deforms synchronously with the airbag.

[0055] Compressed state: External pressure forces the airbag to collapse → The shrapnel is compressed into a flat shape → The volume of the airbag shrinks, and the internal gas is discharged through the exhaust valve.

[0056] Pressure release: The external pressure is released → The shrapnel returns to its original elastic state → The volume of the airbag expands → External gas is inhaled through the intake valve.

[0057] Optionally, it further includes a deformation guiding structure, which is made of nylon 66 skeleton and fits the inner wall of the airbag. It restricts the disorderly deformation of the airbag, ensures the consistency of the compression / reset path of the shrapnel, and prevents the airbag from bursting due to local overstretching.

[0058] In some embodiments of the present application, the hose assembly 5 includes a one-way valve unit, the one-way valve unit is arranged at the pipe orifices of the first hose and the second hose, the one-way valve unit includes an intake valve and an exhaust valve, and the intake valve and the exhaust valve are opened or closed unidirectionally according to the internal and external pressure difference.

[0059] The structure of the intake valve is an umbrella-shaped silica gel diaphragm, and the valve seat is provided with a diversion groove. Trigger condition: When the airbag expands, there is negative pressure inside → The diaphragm turns outwards and opens → External air flows in.

[0060] The structure of the exhaust valve is a conical spring valve, and the valve core is made of polycarbonate. Trigger condition: When the airbag is compressed, the internal pressure > 5 kPa → The spring is compressed → The valve port opens for exhaust.

[0061] In a second aspect, the present application further provides a ship, including a hull and the multifunctional power supply device as described in any one of the embodiments of the first aspect, and the multifunctional power supply device is installed on the hull.

[0062] The protection box 1 is installed on the hull, and a bracket is installed at its bottom. The connection between the protection box 1 and the hull can be realized through structures such as bolts. The outer shell 2 is the outer packaging structure of the battery. Both the protection box 1 and the outer shell 2 include a box body and a cover body, and the box body and the cover body are detachably connected for easy installation and disassembly.

[0063] In the above embodiment, taking the direct connection of the airbag to the atmosphere as an example, that is, the heat exchange medium in the airbag is air, and the air takes away heat during the process of entering and exiting the airbag and the hose.

[0064] In one embodiment, the airbag can be connected to the ballast tank, that is, the heat exchange medium in the airbag is water. Since the thermal conductivity of water is greater than that of air, water can also take away heat during the process of entering and exiting the airbag and the hose, and the effect is better. During the process of the ballast tank exchanging with the external seawater, the water in the ballast tank is cooled.

[0065] Compared with the prior art, the beneficial technical effects brought by the technical solution provided by the present application include: In this application, an airbag assembly 4 is provided between the protection box 1 and the outer shell 2. When the power device is in a state of undulating travel, the outer shell 2 moves relative to the protection box 1. At this time, the outer shell 2 squeezes the airbag assembly 4, and the airbag assembly 4 extrudes gas through the hose assembly 5. When the extrusion force disappears, the airbag assembly 4 has a tendency to reset and can re-inhale external air through the hose assembly 5 to achieve the ventilation function, so as to facilitate the heat generated by the battery assembly 3 in the outer shell 2 to dissipate to the outside, use the bumps as power to achieve heat exchange, replace the cooler, and save energy consumption. When the power device is impacted, the protection box 1 can serve as an impact protection structure to prevent the battery assembly 3 in the outer shell 2 from being directly damaged. The airbag assembly 4 not only has the function of buffering and shock-absorbing the outer shell 2, but also has the function of driving the hose assembly 5 to ventilate. The hose assembly 5 not only has the heat exchange function, but can also serve as a buffer structure in the battery assembly 3.

[0066] Those skilled in the art of this technology can understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, changed, rearranged, decomposed, combined, or deleted.

[0067] The specific implementation manners of the present application described above do not constitute a limitation on the protection scope of the present application. Any other corresponding changes and deformations made according to the technical concept of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A multifunctional power supply device, characterized in that: include: A protection box, wherein the protection box has a hollow first cavity; A housing, the housing being located in the first cavity and having a hollow second cavity; A battery assembly, wherein the battery assembly is embedded in the second cavity and abuts against the housing; An airbag assembly, the airbag assembly is located between the protection box and the shell and has elasticity; A hose assembly, one end of which is connected to the airbag assembly, and the other end of which passes through two sides of the shell and one side of the protection box in sequence to be connected to the outside.

2. The multifunctional power supply device according to claim 1, characterized in that: The battery assembly includes a plurality of battery cells and a plurality of connection blocks. The plurality of battery cells are parallel to each other. Both ends of each battery cell are connected to the connection block, and the connection block abuts against the housing.

3. The multifunctional power supply device according to claim 2, characterized in that: The battery assembly further comprises a magnetic attraction member, which is located between two adjacent connection blocks and is magnetically connected to the connection blocks.

4. The multifunctional power supply device according to claim 2, characterized in that: The airbag assembly includes a first airbag, and the hose assembly includes a first hose. The first airbag is adjacent to the end of the battery cell. The first hose extends in a direction parallel to the axial direction of the battery cell and passes through the longitudinal gaps between two adjacent battery cells. The connecting block is connected to the first airbag.

5. The multifunctional power supply device according to claim 4, characterized in that: The airbag assembly includes a second airbag, and the hose assembly includes a second hose. The second airbag is adjacent to the side wall of the battery cell. The second hose extends in a direction perpendicular to the axial direction of the battery cell and passes through the lateral gaps between two adjacent battery cells to communicate with the second airbag.

6. The multifunctional power supply device according to claim 5, characterized in that: A plurality of first through holes are formed on the side wall of the protection box, and the first hose and the second hose pass through the first through holes.

7. The multifunctional power supply device according to claim 5, characterized in that: It also includes a joint. A plurality of second through holes are opened on the side wall of the shell. The joint is embedded in the second through holes. The first hose and the second hose pass through the joint and are connected to the joint.

8. The multifunctional power supply device according to claim 5, characterized in that: The airbag assembly further includes an annular spring sheet. The inner sides of the first airbag and the second airbag are provided with an annular groove, and the annular spring sheet is embedded in the annular groove.

9. The multifunctional power supply device according to claim 5, characterized in that: The hose assembly includes a one-way valve unit, which is arranged at the pipe openings of the first hose and the second hose. The one-way valve unit includes an intake valve and an exhaust valve, which are opened or closed in one direction according to the internal and external pressure difference.

10. A ship, characterized in that: It comprises a hull and a multifunctional power supply device as claimed in any one of claims 1 to 9, wherein the multifunctional power supply device is installed on the hull.

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