Assembling device of sodium ion battery pack for photovoltaic energy storage and use method of assembling device

Abstract

The invention discloses an assembling device of a sodium ion battery pack for photovoltaic energy storage and a using method thereof, and belongs to the technical field of sodium ion batteries, the assembling device comprises an assembling box and a limiting mechanism, the top of the assembling box is rotatably provided with a box cover, the bottom end of the interior of the assembling box is provided with a placement groove, the interior of the placement groove is movably provided with a mounting frame, and the mounting frame is movably provided with a mounting hole; a sodium ion battery body is mounted in the mounting frame, and limiting mechanisms are arranged on the two sides of the sodium ion battery body. Through the structural design of the mounting frame and the transmission mechanism, a plurality of sodium-ion battery bodies can be extruded and attached to each other to form a whole, the sodium-ion battery bodies are prevented from shaking in the mounting frame, and meanwhile, certain extrusion force can be generated on a hexagonal screw head, so that the hexagonal screw head can be effectively prevented from rotating, and the service life of the sodium-ion battery bodies is prolonged. And the stability of the installed sodium ion battery body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sodium ion batteries, and in particular to an assembly device for a sodium ion battery pack for photovoltaic energy storage and a method for using the same. Background Art

[0002] As the global demand for clean energy grows, photovoltaic power generation has developed rapidly as a sustainable renewable energy technology. However, the output power of photovoltaic power generation is intermittent and volatile. For example, the acquisition of solar energy is completely dependent on sunshine. Power generation can only be generated when there is sunshine during the day. Weather conditions such as cloudy and rainy days and the alternation of day and night will cause changes in power generation. This unstable power output poses a challenge to the stability and reliability of the power grid.

[0003] In order to better connect photovoltaic power generation to the grid and make effective use of it, energy storage technology has become crucial. The energy storage system can store electricity when photovoltaic power generation is in excess and release it when power generation is insufficient, playing the role of "peak shaving and valley filling", thereby improving the quality and availability of photovoltaic power generation.

[0004] Sodium is an element with a relatively high content in the earth's crust, and its resources are widely distributed. Compared with lithium resources, sodium resources have almost no supply bottleneck problem. This gives sodium-ion batteries a natural advantage in raw material supply and can ensure the sustainability of large-scale energy storage applications.

[0005] Since sodium resources are abundant and relatively easy to obtain, the raw material cost of sodium-ion batteries is expected to be much lower than that of lithium-ion batteries. In addition, the production process of sodium-ion batteries is similar to that of lithium-ion batteries. After large-scale production, its manufacturing cost also has room for reduction, which is very attractive for cost-sensitive applications such as photovoltaic energy storage.

[0006] In terms of energy density, power density and cycle life, sodium-ion battery technology has made great progress in recent years. Although its energy density is slightly lower than that of lithium-ion batteries, it can already meet the needs of some photovoltaic energy storage scenarios. Moreover, sodium-ion batteries perform well in terms of safety. Their chemical properties are relatively stable. In abnormal conditions such as overcharging and over-discharging, the probability of dangers such as thermal runaway is low, which makes it more reliable in energy storage applications.

[0007] The present application is an improvement on the prior art. In the prior art, in actual use, the existing sodium-ion battery group for photovoltaic energy storage is assembled by placing multiple sodium-ion batteries for photovoltaic energy storage one by one into a mounting frame. However, in order to facilitate the placement of the sodium-ion batteries for photovoltaic energy storage, the reserved grooves in the mounting frame are generally larger than the specifications of the sodium-ion batteries for photovoltaic energy storage. However, when multiple sodium-ion batteries for photovoltaic energy storage are placed in the reserved grooves, the gaps in the reserved grooves will gradually overlap, causing the sodium-ion batteries for photovoltaic energy storage to easily shake in the mounting frame during use, thereby reducing the fixity of the line after installation and lowering the safety.

[0008] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application, and should not be regarded as admitting or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0009] The object of the present invention is to provide an assembly device for a sodium ion battery pack for photovoltaic energy storage and a method for using the same, so as to solve the problems raised in the above-mentioned background technology.

[0010] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an assembly device for a sodium ion battery pack for photovoltaic energy storage, comprising an assembly box and a limiting mechanism, wherein a box cover is rotatably provided on the top of the assembly box, a placement groove is provided at the inner bottom end of the assembly box, an installation frame is movably provided inside the placement groove, a sodium ion battery body is installed inside the installation frame, and limiting mechanisms are provided on both sides of the sodium ion battery body.

[0011] As a further solution of the present invention: the limiting mechanism includes a fixing groove, and the fixing groove is opened on the outer walls on both sides of the installation frame, and a limiting cover is threadedly arranged at the notch of the fixing groove.

[0012] As a further solution of the present invention: abutment blocks are fixedly connected to the sides of the two limit covers that are close to each other, and a hexagonal screw head is rotatably provided on the sides of the two abutment blocks that are close to each other.

[0013] As a further solution of the present invention: the two sides of the two hexagonal screw heads close to each other are fixedly connected with threaded rods through transmission rods, the outer wall of the threaded rod is threadedly connected with a moving block, and the surface of the moving block is movably provided with a cross bar.

[0014] As a further solution of the present invention: the ends of the two moving blocks close to each other are fixedly connected with a transmission block, and the ends of the two transmission blocks close to each other are fixedly connected with an L-shaped plate.

[0015] As a further solution of the present invention: a connected air outlet duct is fixedly provided on the left side of the assembly box, a first fan is installed inside the air outlet duct, and a connected air inlet duct is fixedly provided on the right side of the assembly box, a second fan is installed inside the air inlet duct.

[0016] As a further solution of the present invention: a threaded groove is provided at the pipe opening of the air outlet pipe and the air inlet pipe, a threaded cover is threadedly provided on the inner wall of the threaded groove, a fixing hole is penetrated through the surface of the threaded cover, and a filter is fixedly provided inside the fixing hole.

[0017] As a further solution of the present invention: the front and rear box walls of the assembly box are both threaded with limit screws, the number of the limit screws is four, and the ends of two limit screws close to each other are fixedly connected to limit pads.

[0018] As a further solution of the present invention: the front and rear box walls of the assembly box are both threaded with limit screws, the number of the limit screws is four, and the ends of two limit screws close to each other are fixedly connected to limit pads.

[0019] The present invention also provides a method for assembling and using a sodium ion battery pack for photovoltaic energy storage, comprising the following steps: Step 1: Place the sodium-ion battery bodies into the installation frame one by one from left to right, and then use a tool to turn the hexagonal screw head in the fixing slot; Step 2: The hexagonal screw head rotates through the transmission rod to drive the threaded rod to rotate. The rotation of the threaded rod finally drives the L-shaped plate to contact the outer wall of the outermost sodium ion battery body and exert a certain extrusion force on it, so that multiple sodium ion battery bodies are fitted together to form a whole, thereby preventing the sodium ion battery body from shaking in the installation frame; Step 3: Then align the limit cover with the fixing groove and screw the limit cover into the fixing groove. During this process, the abutment block will move towards the direction of the hexagonal screw head until it contacts the hexagonal screw head and exerts a certain squeezing force on it, thereby effectively preventing the hexagonal screw head from rotating; Step 4: After the extrusion and positioning of multiple sodium-ion battery bodies are completed, the installation frame is placed in the placement slot of the assembly box, and then the limiting screw is rotated until the limiting pad contacts the installation frame, and the limiting screw is fixed; Step 5: Then close the box cover to complete the assembly of the sodium ion battery pack.

[0020] The present invention has the following beneficial effects: (1) Through the structural design of the installation frame and the transmission mechanism, multiple sodium ion battery bodies can be squeezed and fitted together to form a whole, thereby preventing the sodium ion battery body from shaking in the installation frame. At the same time, a certain squeezing force can be generated on the hexagonal screw head, thereby effectively preventing the hexagonal screw head from rotating, thereby improving the stability of the sodium ion battery body after installation. The problem that in actual use, the sodium ion battery group for photovoltaic energy storage is assembled by placing multiple sodium ion batteries for photovoltaic energy storage one by one into the installation frame, but in order to facilitate the placement of the sodium ion batteries for photovoltaic energy storage, the reserved grooves in the installation frame are generally larger than the specifications of the sodium ion batteries for photovoltaic energy storage. However, when multiple sodium ion batteries for photovoltaic energy storage are placed in the reserved grooves, the gaps in the reserved grooves will gradually overlap, resulting in the sodium ion batteries for photovoltaic energy storage being easy to shake in the installation frame during use, thereby reducing the fixity of the line after installation and the problem of low safety; (2) Through the structural design of the air outlet pipe, air inlet pipe, fixing hole, filter, threaded cover, threaded groove, first fan and second fan, the high-heat gas in the box can be quickly exchanged with the colder air outside, thereby improving the heat dissipation effect. At the same time, the dust in the air can be filtered through the filter to prevent the outside dust from entering the box during the heat dissipation process. The filter can also be easily disassembled, cleaned and installed, thereby effectively ensuring its filtering effect. (3) By setting the limiting screw, the support block and the limiting pad, when the installation frame is placed in the assembly box, the limiting screw can be rotated, and the limiting screw can drive the limiting pad to move in the direction close to the installation frame until it contacts the installation frame and effectively limits and fixes it, thereby improving the stability of the installation frame in the assembly box, and further improving the safety of the device during use. At the same time, by setting the support block, the assembly box can be prevented from directly contacting the ground, thereby reducing the wear on the bottom of the assembly box and extending the service life of the assembly box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional partial schematic diagram of the overall structure of the present invention; Figure 2 It is a left-side partial structural schematic diagram of the present invention; Figure 3 It is a right side partial structure schematic diagram of the present invention; Figure 4 It is a partial structural schematic diagram of the main embodiment of the present invention, which mainly embodies the thread groove and the first fan; Figure 5 This is a partial structural schematic diagram of a threaded cover mainly embodied in the present invention; Figure 6 It is a schematic diagram of a partial structure of an assembly box of the present invention viewed from above; Figure 7This is a schematic diagram of the local structure of the limiting pad mainly embodied in the present invention; Figure 8 It is a schematic diagram of the partial internal structure of the installation frame of the present invention when viewed from above; Fig. 9 It is a schematic diagram of the enlarged local structure of point A of the present invention.

[0022] In the figure: 1. box cover; 2. air outlet duct; 3. assembly box; 4. limiting screw; 5. air inlet duct; 6. support block; 7. fixing hole; 8. filter; 9. limiting mechanism; 901. cross bar; 902. moving block; 903. threaded rod; 904. transmission block; 905. L-shaped plate; 906. limiting cover; 907. abutment block; 908. hexagonal screw head; 909. fixing groove; 10. threaded cover; 11. threaded groove; 12. first fan; 13. sodium ion battery body; 14. installation frame; 15. second fan; 16. limiting pad; 17. placement groove. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, or are the orientation or positional relationship in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1-9 An embodiment of the present invention is as follows: an assembly device for a sodium ion battery pack for photovoltaic energy storage, comprising an assembly box 3 and a limiting mechanism 9, wherein a box cover 1 is rotatably provided on the top of the assembly box 3, a placement groove 17 is provided at the bottom of the assembly box 3, a mounting frame 14 is movably provided inside the placement groove 17, a sodium ion battery body 13 is installed inside the mounting frame 14, and limiting mechanisms 9 are provided on both sides of the sodium ion battery body 13, the limiting mechanism 9 comprises a fixing groove 909, and the fixing groove 909 is provided on the outer wall on both sides of the mounting frame 14, and a limiting cover is threadedly provided at the notch of the fixing groove 909 906, the two limit covers 906 are fixedly connected to the side close to each other with abutment blocks 907, the two abutment blocks 907 are rotatably provided with hexagonal screw heads 908 on the side close to each other, the two hexagonal screw heads 908 are fixedly connected to the threaded rod 903 on the side close to each other through the transmission rod, the outer wall of the threaded rod 903 is threadedly connected to the moving block 902, the surface of the moving block 902 is movably provided with a cross bar 901, the ends of the two moving blocks 902 close to each other are fixedly connected to the transmission block 904, and the ends of the two transmission blocks 904 close to each other are fixedly connected to the L-shaped plate 905; Specifically, Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, when in use, when the sodium ion battery body 13 is placed in the installation frame 14 one by one from left to right, and then the hexagonal screw head 908 in the fixed groove 909 is rotated by a tool, the hexagonal screw head 908 rotates through the transmission rod to drive the threaded rod 903 to rotate, and the threaded rod 903 rotates to drive the two moving blocks 902 to move in a direction close to each other, and the two moving blocks 902 move through the two transmission blocks 904 to drive the two L-shaped plates 905 to move in a direction close to each other until the L-shaped plate 905 contacts the outer wall of the outermost sodium ion battery body 13 and exerts a certain extrusion force on it, so that multiple sodium ion battery bodies 13 are fitted together to form a whole, and the sodium ion battery body 13 is prevented from shaking in the installation frame 14. At the same time, when the sodium ion battery body 13 is assembled, the limit cover 906 is screwed into the fixed groove 909, and the abutment block 907 is driven in this process. The sodium ion battery body 13 is moved in a direction close to the hexagonal screw head 908 until it contacts the hexagonal screw head 908 and exerts a certain extrusion pressure on it, thereby effectively preventing the hexagonal screw head 908 from rotating, thereby improving the stability of the sodium ion battery body 13 after installation, and solving the problem that in actual use, the sodium ion battery group for photovoltaic energy storage is assembled by placing multiple sodium ion batteries for photovoltaic energy storage one by one into the installation frame 14. However, in order to facilitate the placement of the sodium ion batteries for photovoltaic energy storage, the reserved grooves in the installation frame 14 are generally larger than the specifications of the sodium ion batteries for photovoltaic energy storage. However, when multiple sodium ion batteries for photovoltaic energy storage are placed in the reserved grooves, the gaps in the reserved grooves will gradually overlap, resulting in the sodium ion batteries for photovoltaic energy storage being easy to shake in the installation frame 14 during use, thereby reducing the fixity of the line after installation and the problem of low safety.

[0029] The left side of the assembly box 3 is fixedly provided with a connected air outlet pipe 2, and a first fan 12 is installed inside the air outlet pipe 2. The right side of the assembly box 3 is fixedly provided with a connected air inlet pipe 5, and a second fan 15 is installed inside the air inlet pipe 5. The air outlet pipe 2 and the air inlet pipe 5 are both provided with a threaded groove 11 at the pipe openings, and a threaded cover 10 is threadedly provided on the inner wall of the threaded groove 11. A fixing hole 7 is provided through the surface of the threaded cover 10, and a filter screen 8 is fixedly provided inside the fixing hole 7. Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, when in use, more heat will be generated during the operation of the sodium ion battery pack. At this time, the external cold air can be sucked into the box through the second fan 15, and the high-calorie gas in the box is transported to the outside of the box through the first fan 12, so as to achieve a rapid exchange of the high-calorie gas in the box with the relatively cold air outside, thereby improving the heat dissipation effect. At the same time, the dust in the air can be filtered through the filter 8 to prevent the external dust from entering the box during the heat dissipation process. After a certain period of use, the threaded cover 10 can be rotated until the threaded cover 10 is detached from the threaded groove 11, thereby completing the removal of the filter 8, and then cleaning the filter 8. After cleaning, the filter 8 can be installed in the same way. By facilitating the removal, cleaning and installation of the filter 8, its filtering effect can be effectively guaranteed.

[0030] The front and rear box walls of the assembly box 3 are both threaded with limit screws 4, the number of which is four, and the ends of the two limit screws 4 close to each other are fixedly connected to the limit pads 16, and the four corners of the bottom of the assembly box 3 are fixedly connected with support blocks 6, and the number of support blocks 6 is four; Specifically, Figure 1 and Figure 7 As shown, during use, after the installation frame 14 is placed in the assembly box 3, the limit screw 4 can be rotated, and the limit screw 4 can drive the limit pad 16 to move in the direction close to the installation frame 14 until it contacts the installation frame 14 and effectively limits and fixes it, thereby improving the stability of the installation frame 14 in the assembly box 3, and then improving the safety of the device during use. At the same time, through the setting of the support block 6, the assembly box 3 can be prevented from directly contacting the ground, thereby reducing the wear on the bottom of the assembly box 3 and extending the service life of the assembly box 3.

[0031] The present invention also provides a method for assembling and using a sodium ion battery pack for photovoltaic energy storage, comprising the following steps: Step 1: First, place the sodium ion battery bodies 13 one by one into the installation frame 14 from left to right, and then use a tool to rotate the hexagonal screw head 908 in the fixing groove 909; Step 2: The hexagonal screw head 908 rotates through the transmission rod to drive the threaded rod 903 to rotate. The rotation of the threaded rod 903 finally drives the L-shaped plate 905 to contact the outer wall of the outermost sodium ion battery body 13 and exert a certain extrusion force on it, so that multiple sodium ion battery bodies 13 are attached to each other to form a whole, and the sodium ion battery body 13 is prevented from shaking in the installation frame 14; Step 3: Then align the limit cover 906 with the fixing groove 909, and screw the limit cover 906 into the fixing groove 909. During this process, the abutment block 907 will move towards the direction of the hexagonal screw head 908 until it contacts the hexagonal screw head 908 and exerts a certain squeezing force on it, thereby effectively preventing the hexagonal screw head 908 from rotating; Step 4: After the multiple sodium ion battery bodies 13 are squeezed and limited, the installation frame 14 is placed in the placement groove 17 of the assembly box 3, and then the limiting screw 4 is rotated until the limiting pad 16 contacts the installation frame 14 and is limited and fixed; Step 5: Then close the box cover 1 to complete the assembly of the sodium ion battery pack.

[0032] Working principle: In the present application, when the sodium ion battery body 13 is placed in the installation frame 14 one by one from left to right, and then the hexagonal screw head 908 in the fixing groove 909 is rotated by a tool, the hexagonal screw head 908 rotates through the transmission rod to drive the threaded rod 903 to rotate, and the threaded rod 903 rotates to drive the two moving blocks 902 to move in a direction close to each other, and the two moving blocks 902 move through the two transmission blocks 904 to drive the two L-shaped plates 905 to move in a direction close to each other until the L-shaped plate 905 contacts the outer wall of the outermost sodium ion battery body 13 and exerts a certain extrusion force on it, so that A plurality of sodium ion battery bodies 13 are fitted together to form a whole, so as to prevent the sodium ion battery bodies 13 from shaking in the installation frame 14. At the same time, when the sodium ion battery bodies 13 are assembled, the limit cover 906 is screwed into the fixing groove 909. In this process, the abutment block 907 is driven to move in the direction close to the hexagonal screw head 908 until it contacts the hexagonal screw head 908 and exerts a certain extrusion force on it, thereby effectively preventing the hexagonal screw head 908 from rotating, thereby improving the stability of the sodium ion battery body 13 after installation, and then rotating the limit screw 4 until the limit pad 16 contacts the installation frame 14, and It is limited and fixed, and then the box cover 1 is closed to complete the assembly of the sodium ion battery pack. Secondly, more heat will be generated during the operation of the sodium ion battery pack. At this time, the external cold air can be sucked into the box through the second fan 15, and the high-calorie gas in the box is transported to the outside of the box through the first fan 12, so as to achieve a rapid exchange of the high-calorie gas in the box with the relatively cold air outside, thereby improving the heat dissipation effect. At the same time, the dust in the air can be filtered through the filter 8 to prevent the external dust from entering the box during the heat dissipation process. After a certain period of use, the threaded cover 10 can be rotated until the threaded cover 10 is removed from the screw. The filter 8 is disengaged from the groove 11, thereby completing the disassembly of the filter 8, and then the filter 8 is cleaned. After cleaning, the filter 8 can be installed in the same way. By facilitating the disassembly, cleaning and installation of the filter 8, the filtering effect can be effectively guaranteed. Finally, when the installation frame 14 is placed in the assembly box 3, the limit screw 4 can be rotated, and the limit screw 4 can rotate to drive the limit pad 16 to move toward the installation frame 14 until it contacts the installation frame 14 and effectively limits and fixes it, thereby improving the stability of the installation frame 14 in the assembly box 3, thereby improving the safety of the device during use.

[0033] The standard parts used in this application document can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art. At the same time, the electrical components appearing in this application are all externally connected to the power supply and control switch when in use. The control method is automatically controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. Therefore, the present invention will no longer explain the control method and circuit connection in detail, and the external controller mentioned in the specification can control the electrical components mentioned in this article, and the external controller is a conventional known device.

[0034] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. An assembly device for a sodium ion battery pack for photovoltaic energy storage, comprising an assembly box (3) and a limiting mechanism (9), characterized in that: A box cover (1) is rotatably provided on the top of the assembly box (3), a placement groove (17) is provided at the bottom end of the assembly box (3), a mounting frame (14) is movably provided inside the placement groove (17), a sodium ion battery body (13) is installed inside the mounting frame (14), and limiting mechanisms (9) are provided on both sides of the sodium ion battery body (13).

2. The assembly device of a sodium ion battery group for photovoltaic energy storage according to claim 1, characterized in that: The limiting mechanism (9) comprises a fixing groove (909), and the fixing groove (909) is provided on the outer walls on both sides of the installation frame (14), and a limiting cover (906) is threadedly provided at the notch of the fixing groove (909).

3. The assembly device of a sodium ion battery group for photovoltaic energy storage according to claim 2, characterized in that: The sides of the two limit covers (906) that are close to each other are fixedly connected with abutment blocks (907), and the sides of the two abutment blocks (907) that are close to each other are rotatably provided with hexagonal screw heads (908).

4. The assembly device of a sodium ion battery group for photovoltaic energy storage according to claim 3, characterized in that: The two hexagonal screw heads (908) are fixedly connected to a threaded rod (903) on one side close to each other via a transmission rod. The outer wall of the threaded rod (903) is threadedly connected to a moving block (902). A cross bar (901) is movably provided through the surface of the moving block (902).

5. The assembly device of a sodium ion battery group for photovoltaic energy storage according to claim 4, characterized in that: One end of the two moving blocks (902) close to each other is fixedly connected to a transmission block (904), and one end of the two transmission blocks (904) close to each other is fixedly connected to an L-shaped plate (905).

6. The assembly device of a sodium ion battery group for photovoltaic energy storage according to claim 1, characterized in that: A connected air outlet pipe (2) is fixedly provided on the left side of the assembly box (3), a first fan (12) is installed inside the air outlet pipe (2), and a connected air inlet pipe (5) is fixedly provided on the right side of the assembly box (3), a second fan (15) is installed inside the air inlet pipe (5).

7. The assembly device of a sodium ion battery group for photovoltaic energy storage according to claim 6, characterized in that: The outlet pipe (2) and the inlet pipe (5) are both provided with a threaded groove (11), the inner wall of the threaded groove (11) is threadedly provided with a threaded cover (10), a fixing hole (7) is provided through the surface of the threaded cover (10), and a filter screen (8) is fixedly provided inside the fixing hole (7).

8. The assembly device of a sodium ion battery group for photovoltaic energy storage according to claim 1, characterized in that: The front and rear box walls of the assembly box (3) are both threaded with limit screws (4), the number of the limit screws (4) is four, and the ends of two limit screws (4) close to each other are fixedly connected to limit pads (16).

9. The assembly device of a sodium ion battery group for photovoltaic energy storage according to claim 1, characterized in that: Support blocks (6) are fixedly connected at the four corners of the bottom of the assembly box (3), and the number of the support blocks (6) is four.

10. A method for assembling and using a sodium ion battery pack for photovoltaic energy storage according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: First, place the sodium ion battery bodies (13) one by one from left to right into the installation frame (14), and then use a tool to rotate the hexagonal screw head (908) in the fixing groove (909); Step 2: The hexagonal screw head (908) rotates through the transmission rod to drive the threaded rod (903) to rotate, and the rotation of the threaded rod (903) eventually drives the L-shaped plate (905) to contact the outer wall of the outermost sodium ion battery body (13) and exert a certain extrusion force thereon, so that the multiple sodium ion battery bodies (13) are mutually attached to form a whole, and the sodium ion battery bodies (13) are prevented from shaking in the installation frame (14); Step 3: Then align the limit cover (906) with the fixing groove (909), and screw the limit cover (906) into the fixing groove (909). During this process, the abutment block (907) will be driven to move in the direction close to the hexagonal screw head (908) until it contacts the hexagonal screw head (908) and exerts a certain squeezing force on it, thereby effectively preventing the hexagonal screw head (908) from rotating; Step 4: After the multiple sodium ion battery bodies (13) are squeezed and limited, the installation frame (14) is placed in the placement groove (17) of the assembly box (3), and then the limiting screw (4) is rotated until the limiting pad (16) contacts the installation frame (14) and is fixed in position; Step 5: Then close the box cover (1) to complete the assembly of the sodium ion battery pack.

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