Deep sea self-pressure-bearing battery pack structure

Abstract

The invention provides a deep sea self-pressure-bearing battery pack structure which comprises a base and a shell, and a battery pack fixed to the base is placed in a closed cavity defined by the shell and the base; and a plurality of leather bags are arranged in the shell. The deep sea self-pressure-bearing battery pack structure can adapt to the pressure bearing strength within the depth range of 0-13000m, is stable and reliable to install, convenient to disassemble and assemble, convenient to control and transport and high in overall pressure bearing strength, can also guarantee stable power supply in a high-pressure deep sea environment, and can also reduce the risk of breakage caused by collision in the deep sea to the maximum extent.

Description

Technical Field

[0001] The present application belongs to the field of chemical power source technology, and in particular, relates to a deep-sea self-pressurized battery pack structure. Background Art

[0002] As human beings' understanding and development needs for deep-sea resources continue to increase, deep-sea exploration and operation technologies have developed rapidly. Deep-sea submersibles, deep-sea sensors, deep-sea cameras and other deep-sea exploration equipment continue to emerge. These devices need to operate and operate for a long time in the deep-sea environment, thus putting forward higher requirements for efficient, reliable and long-lasting energy supply in the deep-sea environment. As an efficient and reliable energy supply method, deep-sea self-contained lithium battery packs have gradually become an important choice for deep-sea exploration equipment.

[0003] The deep-sea environment has the characteristics of high pressure, low temperature, corrosion, etc. Traditional energy supply methods such as fossil fuels and chemical batteries are difficult to meet the long-term operation requirements of deep-sea exploration equipment. The deep-sea self-contained lithium battery pack has excellent pressure resistance, waterproofness, high energy density and low-temperature performance. It can adapt to the special requirements of the deep-sea environment and provide a stable and reliable energy supply for deep-sea exploration equipment. As a high-energy-density, long-life, and environmentally friendly battery technology, lithium batteries have developed rapidly in recent years, and their safety performance and low-temperature performance have been significantly improved. The deep-sea self-contained lithium battery pack is developed based on the continuous advancement of lithium battery technology, with higher energy density, longer service life and better safety performance.

[0004] At present, the design method at home and abroad is mainly to encapsulate underwater batteries through pressure-resistant shells. As the operating depth of electrical equipment in the deep sea environment gradually increases, the pressure that the battery device needs to withstand is also increasing. Deep-sea lithium battery packs are generally encapsulated in pressure-resistant shells made of materials such as stainless steel, aluminum alloy or titanium alloy. To ensure the pressure resistance, the shell thickness must increase with the increase of operating depth, resulting in the volume and weight of the battery pack device being very large, which seriously reduces the energy density of the battery and also seriously affects the payload of deep-sea electrical equipment. Therefore, how to make the battery adapt to different underwater operating depths, compress the volume and mass of the underwater battery device while ensuring stable operation, and improve the energy density of the battery, is a key technical issue in the study of underwater battery devices. Summary of the invention

[0005] The present application provides a deep-sea self-pressurized battery pack structure, which solves the technical problem of how to compress the volume and mass of the underwater battery device, improve the energy density of the battery and adapt to different underwater operating depths while ensuring stable operation.

[0006] In order to solve at least one of the above technical problems, the technical solution adopted in this application is:

[0007] A deep-sea self-pressurized battery pack structure comprises a base and a shell. The battery pack fixed on the base is placed in a closed cavity surrounded by the shell and the base. A plurality of leather bags are also arranged in the shell.

[0008] Furthermore, the base and the shell are both made of titanium alloy material, and the base is constructed as a rectangular parallelepiped structure.

[0009] Furthermore, a groove is provided on the upper end surface of the base along its periphery, and a sealing strip embedded in the groove is used to maintain sealing with the shell.

[0010] Furthermore, a plurality of mounting slots for placing battery packs are constructed on the base, and the mounting slots are surrounded by a plurality of staggered ribs.

[0011] Furthermore, a frame for fixing the battery pack is also provided on the base, and the frame includes a pressing plate and two sets of pull rods connecting the pressing plate and the base, and the pull rods are placed at both ends of the length of the base.

[0012] Furthermore, ribs are constructed on the outer wall at the end of the shell, and all the ribs are arranged along the height of the shell; a plurality of oblong holes are constructed on the ribs, and a hoisting hole for hoisting and fixing is provided at the top of the ribs.

[0013] Furthermore, an oil filling hole, an exhaust hole, a mounting hole connected to a watertight connector, and a fixing hole for connecting to a bladder fixing seat are constructed on the top of the shell.

[0014] Furthermore, the oil filling hole is configured at one end of the shell, and the exhaust hole, the mounting hole and the fixing hole are configured at the other end of the shell.

[0015] Furthermore, there are two fixing holes and two mounting holes, and the mounting hole is arranged between the two fixing holes.

[0016] Furthermore, the oil filling hole, the exhaust hole, and the mounting hole are all arranged on the length midline of the shell, and the exhaust hole is located between the oil filling hole and the exhaust hole.

[0017] A deep-sea self-pressurized battery pack structure designed in the present application can adapt to the pressure strength within the depth range of 0-13000m. It is stable and reliable to install and easy to assemble and disassemble, and is convenient for operation and transportation. It has high overall pressure strength and can ensure stable power supply in high-pressure deep-sea environments. It can also minimize the risk of rupture caused by bumps in the deep sea. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is the appearance diagram of the deep-sea self-contained battery pack structure in this application;

[0019] Figure 2 It is a front view of the deep-sea self-pressurized battery pack structure in this application;

[0020] Figure 3 yes Figure 2 Sectional view of AA in the middle;

[0021] Figure 4 yes Figure 3 Cross-sectional view of the middle BB;

[0022] Figure 5 It is a three-dimensional diagram of the base in this application.

[0023] In the figure:

[0024] 10. Base 11. Groove 12. Installation slot

[0025] 13. Frame 20, Shell 21, Oil filling hole

[0026] 22. Exhaust hole 23. Mounting hole 24. Fixing hole

[0027] 25, oblong hole 26, lifting hole 30, leather bag

[0028] 40. Battery Pack DETAILED DESCRIPTION

[0029] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] This embodiment proposes a deep-sea self-pressurized battery pack structure, such as Figure 1 As shown, it includes a base 10 and a shell 20 fixedly connected up and down, wherein the base 10 and the shell 20 are made of titanium alloy material, which can ensure the compressive strength and corrosion resistance of the overall structure and reduce the overall weight. The base 10 is constructed as a rectangular structure, and the shell 20 structure is adapted thereto. The battery pack 40 fixed on the base 10 is placed in a closed cavity surrounded by the shell 20 and the base 10, and two groups of seawater hydraulic self-balancing bladders 30 are also constructed in the shell 20. When the external environmental pressure changes, the bladder 30 will expand and contract with the internal and external pressure difference, and the internal transformer oil volume will change accordingly until the pressure inside and outside the cavity is balanced again, thereby preventing the shell 20 structure from being subjected to greater pressure.

[0031] like Figure 5As shown, a groove 11 is provided along the periphery of the upper end surface of the base 10, and the base 10 and the housing 20 can be sealed by a sealing strip embedded in the groove 11. At the same time, a plurality of fastening screw holes fixedly connected to the housing 20 are provided on the extension of the groove 11 on the base 10, and the housing 20 and the base 10 are fixedly connected by the fastening screws, and when fixed, the sealing strip in the groove 11 is squeezed to form a reliable sealing chain, thereby ensuring the airtightness and waterproof performance of the inner cavity of the housing 20.

[0032] The base 10 is also provided with a plurality of mounting slots 12 for placing the battery pack 40. The mounting slots 12 are surrounded by a plurality of staggered ribs. The battery pack 40 includes a plurality of batteries connected in series. The arrangement of the mounting slots 40 not only improves the stability of the lithium battery pack installation, but also improves the stability and strength of the base 10 through a plurality of ribs, and also reduces the overall weight, saves the material of the base 10, improves the utilization rate of the base 10, and improves the energy density of the battery pack; and at the same time, it is convenient for assembly and disassembly.

[0033] The base 10 is also provided with a frame 13 for fixing the battery pack 40. The frame 13 includes a right-angled pressure plate commonly used in the prior art for fixing the battery, and two sets of tie rods for connecting the pressure plate and the base 10. The tie rods are placed at both ends of the length of the base 10. One end of the tie rod is a curved structure and is inserted into the mounting hole on the base 10. The other end cooperates with the through hole on the pressure plate and is fixed to the pressure plate by a nut, so that the pressure plate presses the top of the battery, so that the battery pack 40 is firmly fixed in the mounting slot 12.

[0034] At one end of the base 10, that is, at one end of the battery pack 40, two bladders 30 are provided, which can be connected to the bladder mounting seat through the fixing holes 24 placed on the shell 20. Through the expansion and contraction of the seawater hydraulic self-balancing bladder 30 and the transformer oil inside the shell 20, the internal pressure of the device can be adjusted at any time to balance with the external environment, so as to ensure that the lithium battery pack can still work stably and continuously supply power in an underwater environment with relatively high pressure. The entire battery structure has a pressure adaptive function, which can be continuously adjusted with the increase of underwater depth, and the pressure balance can be maintained, which can still ensure good effectiveness in a large water depth range, and the maximum depth can reach 13000m. In addition, this structure using an external all-metal shell 20 and an internal bladder 40 not only ensures the pressure resistance of the shell 20, but also improves the structural strength of the battery exterior, reducing the risk of bladder rupture caused by collision in the deep sea.

[0035] like Figure 1-2As shown, ribs are also constructed on the outer wall of the end of the shell 20, and all ribs are arranged along the height of the shell 20; a number of oblong holes 25 are constructed on the ribs to reduce weight and eliminate stress concentration. A hoisting hole 26 for hoisting and fixing is provided at the top of the ribs to facilitate the operation and transportation of the overall structure. The device structure is stable and reliable, and easy to disassemble and assemble.

[0036] Furthermore, the top of the shell 20 is provided with an oil filling hole 21, an exhaust hole 22, a mounting hole 23 connected to a watertight connector, and a fixing hole 24 for connecting to a bladder fixing seat. The oil filling hole 21 and the exhaust hole 22 are respectively matched with the oil filling hole plug and the exhaust hole plug, and the watertight connector is matched with the mounting hole 23; the bladder 30 placed inside the shell 20 is connected to the fixing seat through the fixing hole 24. The positive and negative electrodes of the battery pack 40 are connected to the watertight connector through a wire, and potting glue is provided between the inner wall of the shell 20, the base, and the lithium battery pack.

[0037] Specifically, the oil filling hole 21 is configured at one end of the top of the housing 20, and the exhaust hole 22, the mounting hole 23 and the fixing hole 24 are configured at the other end of the top of the housing 20. There are two fixing holes 24 and two mounting holes 23, and the mounting hole 23 is configured between the two fixing holes 24. The oil filling hole 21, the exhaust hole 22 and the mounting hole 23 are all configured on the length midline of the housing 20, and the exhaust hole 22 is located between the oil filling hole 21 and the exhaust hole 22.

[0038] Firstly, the present application replaces the existing heavy pressure-resistant shell with a self-pressurized battery pack structure, which can not only significantly reduce the overall weight of the battery pack 40 device and increase the energy density of the battery pack; but also form a battery pack cavity with a reliable seal by embedding a sealing strip between the shell 20 and the base 10; and then inject transformer oil into the cavity of the shell 20 through the oil filling hole 21 to form an elastically adjustable structure, and adjust the internal and external pressure difference of the battery pack device by the expansion and contraction of the seawater hydraulic self-balancing bladder 30 installed in the shell 20, so that it has adaptive pressure-bearing capacity within the depth range of 0-13000 meters, thereby ensuring stable power supply in a high-pressure deep-sea environment.

[0039] Secondly, the present application does not adopt the traditional battery overall glue-filled pressure-bearing structure, but adopts an external all-metal shell and an internal bladder 30 structure, which not only ensures the pressure resistance of the shell 20, but also improves the structural strength of the battery exterior, reducing the risk of bladder rupture due to collisions in the deep sea.

[0040] Finally, the base 10 and shell 20 made of titanium alloy material are provided with a reinforcement structure in the present application, which not only reduces the weight but also improves the pressure-bearing strength of the battery pack as a whole. The ribs on the base and the rib structure on the outer wall of the shell enhance the stability of the installation of the lithium battery pack. The lifting holes 26 on the shell 20 facilitate the operation and transportation of the entire device. Not only is the structure stable and reliable, but it is also easy to assemble and disassemble.

[0041] A deep-sea self-pressurized battery pack structure designed in the present application can adapt to the pressure strength within the depth range of 0-13000m. It is stable and reliable to install and easy to assemble and disassemble, and is convenient for operation and transportation. It has high overall pressure strength and can ensure stable power supply in high-pressure deep-sea environments. It can also minimize the risk of rupture caused by bumps in the deep sea.

[0042] The above detailed description of the embodiments of the present application is only a preferred embodiment of the present application and cannot be considered to limit the scope of implementation of the present application. All equivalent changes and improvements made within the scope of the present application should still fall within the scope of the patent coverage of the present application.

Claims

1. A deep-sea self-pressurized battery pack structure, characterized in that: The invention comprises a base and a shell. The battery pack fixed on the base is placed in a closed cavity surrounded by the shell and the base. A plurality of leather bags are also arranged in the shell.

2. A deep-sea self-contained battery pack structure according to claim 1, characterized in that: The base and the shell are both made of titanium alloy material, and the base is constructed as a rectangular parallelepiped structure.

3. A deep-sea self-pressurized battery pack structure according to claim 1 or 2, characterized in that: A groove is arranged along the periphery of the upper end surface of the base, and is sealed with the shell through a sealing strip embedded in the groove.

4. A deep-sea self-contained battery pack structure according to claim 3, characterized in that: A plurality of mounting grooves for placing battery packs are also constructed on the base, and the mounting grooves are surrounded by a plurality of staggered ribs.

5. A deep-sea self-contained battery pack structure according to any one of claims 1-2 and 4, characterized in that: The base is also provided with a frame for fixing the battery pack, the frame comprising a pressing plate and two groups of pull rods connecting the pressing plate and the base, the pull rods being placed at both ends of the base.

6. A deep-sea self-contained battery pack structure according to claim 5, characterized in that: The outer wall at the end of the shell is also structured with ribs, all of which are arranged along the height of the shell; a plurality of oblong holes are structured on the ribs, and a hoisting hole for hoisting and fixing is provided at the top of the ribs.

7. A deep-sea self-contained battery pack structure according to any one of claims 1-2, 4 and 6, characterized in that: An oil filling hole, an exhaust hole, a mounting hole connected to a watertight connector, and a fixing hole for connecting to a bladder fixing seat are constructed on the top of the shell.

8. A deep-sea self-contained battery pack structure according to claim 7, characterized in that: The oil filling hole is configured at one end of the housing, and the exhaust hole, the mounting hole and the fixing hole are configured at the other end of the housing.

9. A deep-sea self-contained battery pack structure according to claim 8, characterized in that: The number of the fixing holes and the number of the mounting holes are both two, and the mounting hole is configured between the two fixing holes.

10. A deep-sea self-contained battery pack structure according to claim 8 or 9, characterized in that: The oil filling hole, the exhaust hole, and the mounting hole are all arranged on the length midline of the shell, and the exhaust hole is located between the oil filling hole and the exhaust hole.

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