Large-diameter ultra-thin aluminum cylinder and processing device thereof

Abstract

The utility model relates to a kind of large-diameter ultra-thin aluminium cylinder and its processing device, including aluminium cylinder body;The aluminium cylinder body includes the first half aluminium cylinder and second half aluminium cylinder connected;The utility model is designed as split structure by traditional aluminium cylinder of integral structure, can make that large-diameter aluminium cylinder can be made after split welding fixation;Split structure makes that originally designed large-diameter aluminium cylinder extrusion diameter when processing becomes half when design, greatly reduce the production and processing difficulty of large-diameter aluminium cylinder, and with the actual processing aperture reduction, the size, appearance, performance of split aluminium cylinder can be effectively promoted, and the defective rate of large-diameter aluminium cylinder manufacturing is substantially reduced. The positioning cooperation of two split aluminium cylinders can be quickly realized by the processing device of the utility model, welding fixation is facilitated;Processing device effectively guarantees the precision of split aluminium cylinder cooperation, reduces processing difficulty, and improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a large-diameter ultra-thin aluminum cylinder and its processing device. Background Technology

[0002] As the penetration rate of new energy products increases, users' understanding of new energy batteries is becoming more profound, and demand is gradually shifting towards higher capacity. Higher capacity requires more space to accommodate cell modules, and as customers' demands for battery safety and reliability continue to rise, the use of aluminum casings instead of plastic casings is gradually becoming a necessary choice for products.

[0003] Patent publication number CN109216599A discloses a thin-walled aluminum shell for new energy lithium batteries and its manufacturing process. It specifically introduces a common aluminum cylinder manufacturing process in the prior art, in which a thin-walled aluminum cylinder structure is formed by extrusion and extension. However, traditional aluminum extrusion cylinders have the problems that the larger the diameter, the greater the processing difficulty, the finished product deformation cannot meet the design requirements, and the precision of large-diameter aluminum cylinders cannot meet the design requirements. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a large-diameter ultra-thin aluminum cylinder processing device.

[0005] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0006] A large-diameter ultra-thin aluminum cylinder includes an aluminum cylinder body; the aluminum cylinder body includes a first half-aluminum cylinder and a second half-aluminum cylinder connected together.

[0007] The first half-aluminum cylinder includes two first side plates arranged at relatively intervals; one end of the two first side plates is connected by a first connecting plate; the first side plates and the first connecting plate have the same length direction along a second direction; the two first side plates are arranged opposite each other along a first direction; the first direction is perpendicular to the plane where the first side plates are located; the second direction is perpendicular to the first direction; the straight line formed at the connection between the first side plates and the first connecting plate is parallel to the second direction;

[0008] The second half-aluminum cylinder includes two second side plates arranged at relatively intervals; one end of the two second side plates is connected by a second connecting plate; the second side plates and the second connecting plate have the same length direction along a second direction; the two second side plates are arranged opposite each other along a first direction; the first direction is perpendicular to the plane where the second side plates are located; the straight line formed at the connection between the second side plates and the second connecting plate is parallel to the second direction;

[0009] The first connecting plate and the second connecting plate are arranged opposite each other along a third direction; the first connecting plate is connected to the end of the first side plate away from the second half aluminum cylinder; the second connecting plate is connected to the end of the second side plate away from the first half aluminum cylinder; the first side plate is connected to the second side plate; the third direction is perpendicular to the plane where the first connecting plate and the second connecting plate are located; the third direction is perpendicular to the first direction and the second direction.

[0010] In one embodiment of this utility model, the first half-aluminum cylinder and the second half-aluminum cylinder have the same structure or are symmetrical to each other.

[0011] In one embodiment of this utility model, the first side plate and the first connecting plate are each provided with a plurality of first reinforcing ribs; the second side plate and the second connecting plate are each provided with a plurality of second reinforcing ribs; the first reinforcing ribs are parallel to the second direction; the second reinforcing ribs are parallel to the second direction.

[0012] In one embodiment of the present invention, the first side plate and the second side plate have the same thickness and the first connecting plate and the second connecting plate have the same thickness, or the first side plate, the second side plate, the first connecting plate, and the second connecting plate all have the same thickness.

[0013] A processing device for large-diameter ultra-thin aluminum cylinders includes a first positioning mold and a second positioning mold that are arranged opposite each other along a first direction; the aluminum cylinder body is positioned within the inner space formed by the first positioning mold and the second positioning mold.

[0014] The first positioning mold includes a first base plate; two first positioning side plates are connected to the first base plate and are arranged opposite to each other and spaced apart along a third direction; a second positioning side plate is connected to one side of the first positioning side plate; the second positioning side plate is arranged opposite to the second positioning mold; a second clearance groove is formed between the two second positioning side plates; and a first limiting groove with a thickness equivalent to that of the aluminum cylinder body is provided on the first base plate.

[0015] The second positioning mold includes a second base plate; two third positioning side plates are connected to the second base plate and are arranged opposite to each other and spaced apart along a third direction; a fourth positioning side plate is connected to one side of each of the third positioning side plates; the fourth positioning side plate and the second positioning side plate are arranged opposite to each other along a first direction; a third clearance groove is formed between the two fourth positioning side plates; a second limiting groove is provided on the second base plate, which is equivalent to the thickness of the aluminum cylinder body; the second clearance groove and the third clearance groove respectively correspond to a connection point between the first side plate and the second side plate.

[0016] In one embodiment of this utility model, the length of the first positioning side plate along the second direction is greater than the length of the second positioning mold along the second direction.

[0017] In one embodiment of the present invention, a first relief groove is formed on the side of the second positioning side plate near the second relief groove at the end of the second positioning side plate away from the first bottom plate.

[0018] In one embodiment of this utility model, the length of the first positioning side plate along the second direction is equivalent to the length of the aluminum cylinder body along the second direction.

[0019] In one embodiment of this utility model, two first limiting grooves are provided; a first limiting block connected to the first base plate is provided at one end of the second positioning side plate near the second clearance groove; the first limiting block and the second positioning side plate are arranged opposite to each other along a first direction and spaced apart, and the gap between the first limiting block and the second positioning side plate forms the first limiting groove;

[0020] Two second limiting grooves are provided; the fourth positioning side plate is provided with a second limiting block connected to the second base plate at one end near the third clearance groove; the second limiting block and the fourth positioning side plate are arranged opposite to each other and spaced apart along the first direction, and the gap between the second limiting block and the fourth positioning side plate forms the second limiting groove.

[0021] In one embodiment of the present invention, the first base plate is flush with the second base plate; the bottom of the first limiting groove is flush with the upper surface of the first base plate; and the bottom of the second limiting groove is flush with the upper surface of the second base plate.

[0022] The beneficial effects of this utility model are: by designing the traditional one-piece aluminum cylinder into a split structure, large-diameter aluminum cylinders can be manufactured separately and then welded together; the split structure allows the extrusion diameter of the originally designed large-diameter aluminum cylinder to be directly reduced to half of the original design during processing, which greatly reduces the difficulty of manufacturing large-diameter aluminum cylinders. Furthermore, as the actual processing diameter decreases, the size, shape, and performance of the split aluminum cylinder can be effectively improved, and the defect rate of large-diameter aluminum cylinder manufacturing is greatly reduced.

[0023] The processing device of this invention can quickly achieve the positioning and fitting of two separate aluminum cylinders, facilitating welding and fixing; the processing device effectively ensures the precision of the fitting of the separate aluminum cylinders, reduces processing difficulty, and improves production efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a structural schematic diagram of the disassembly and assembly of the aluminum cylinder body of this utility model;

[0026] Figure 2 This is an exploded view of the processing device of this utility model;

[0027] Figure 3 This is a top view of the processing device of this utility model;

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. First half-aluminum cylinder; 11. First side plate; 12. First connecting plate; 13. First reinforcing rib; 2. Second half-aluminum cylinder; 21. Second side plate; 22. Second connecting plate; 23. Second reinforcing rib; 10. Aluminum cylinder body; 100. First positioning mold; 110. First base plate; 120. First positioning side plate; 130. Second positioning side plate; 140. First clearance groove; 150. Second clearance groove; 160. First limiting groove; 170. First limiting block; 200. Second positioning mold; 210. Second base plate; 220. Third positioning side plate; 230. Fourth positioning side plate; 240. Third clearance groove; 250. Second limiting groove; 260. Second limiting block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Example:

[0034] like Figure 1 For ease of understanding, the first direction is parallel to the x-axis, the second direction is parallel to the y-axis, and the third direction is parallel to the z-axis.

[0035] A large-diameter ultra-thin aluminum cylinder includes an aluminum cylinder body 10; the aluminum cylinder body 10 includes a first half-aluminum cylinder 1 and a second half-aluminum cylinder 2 connected together; it should be understood that the aluminum cylinder body is formed by combining the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2; in the initial stage of production and processing, the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2 are separate structures; that is, the aluminum cylinder body 10 is formed by combining the separate structures of the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2; in one embodiment, the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2 are fixed by welding to form the aluminum cylinder body 10; in one embodiment, the welding can be laser welding.

[0036] In one embodiment, the first semi-aluminum cylinder 1 includes two first side plates 11 arranged at relatively intervals; one end of the two first side plates 11 is connected by a first connecting plate 12; the first side plates 11 and the first connecting plate 12 have the same length direction along the second direction, that is, as shown in the figure. Figure 1The first side plates 11 have the same extension direction along the y-axis; the two first side plates 11 are arranged opposite each other along a first direction; the first direction is perpendicular to the plane where the first side plates 11 are located; the second direction is perpendicular to the first direction; the straight line formed by the connection between the first side plates 11 and the first connecting plate 12 is parallel to the second direction; the second half aluminum cylinder 2 includes two second side plates 21 arranged relatively spaced apart; one end of the two second side plates 21 is connected by a second connecting plate 22; the second side plates 21 and the second connecting plate 22 have the same length direction along the second direction; the two second side plates 21 are arranged opposite each other along the ... second half aluminum cylinder 2 includes two second side plates 21 arranged relatively spaced apart; one end of the two second side plates 21 is connected by a second connecting plate 22; the second side plates 21 and the second connecting plate 22 have the same length direction along the second direction; the two second side plates 21 are arranged opposite each other along the first direction; the first direction is perpendicular to the first direction; the second half aluminum cylinder 2 includes two second side plates 21 arranged relatively spaced apart along the first direction; the second side plates 21 have the same length direction along the second direction; the second side plates 21 are arranged opposite each other along the first direction; The plane of the second side plate 21 is perpendicular to the plane of the second side plate 21; the straight line formed at the connection between the second side plate 21 and the second connecting plate 22 is parallel to the second direction; the first connecting plate 12 and the second connecting plate 22 are arranged opposite each other along the third direction; the first connecting plate 12 is connected to the end of the first side plate 11 away from the second half aluminum cylinder 2; the second connecting plate 22 is connected to the end of the second side plate 21 away from the first half aluminum cylinder 1; the first side plate 11 is connected to the second side plate 21; the third direction is perpendicular to the plane of the first connecting plate 12 and the second connecting plate 22; the third direction is perpendicular to both the first direction and the second direction. The aluminum cylinder body 10 constructed in this way has a rectangular cross-section, preferably a rounded rectangle. The aluminum cylinder body 10 of this utility model designs the traditional one-piece aluminum cylinder into a split structure, which allows large-diameter aluminum cylinders to be manufactured separately and then welded together. The split structure makes the extrusion diameter of the originally designed large-diameter aluminum cylinder directly half of the design diameter during processing, which greatly reduces the difficulty of manufacturing and processing large-diameter aluminum cylinders. Furthermore, as the actual processing diameter decreases, the size, shape, and performance of the split aluminum cylinder can be effectively improved, and the defect rate of large-diameter aluminum cylinder manufacturing is greatly reduced.

[0037] In one embodiment of this utility model, the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2 have the same structure or are symmetrical to each other. Preferably, the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2 have the same structure, so that the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2 can be produced simultaneously using a set of extrusion molds, saving mold opening costs. At the same time, since the structure is the same, the same set of molds can be used to manufacture the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2, and the processing accuracy of the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2 is also basically the same, which further improves the docking accuracy when connecting the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2.

[0038] In one embodiment of the present invention, the first side plate 11 and the first connecting plate 12 are each provided with a plurality of first reinforcing ribs 13; the second side plate 21 and the second connecting plate 22 are each provided with a plurality of second reinforcing ribs 23; the first reinforcing ribs 13 are parallel to the second direction; the second reinforcing ribs 23 are parallel to the second direction. By setting reinforcing ribs, the deformation of the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2 during processing can be effectively reduced, ensuring the dimensional accuracy and flatness of the final product. Flatness can be understood as the high flatness of each side of the aluminum cylinder body 10. It should be noted that the improvement in flatness does not rely entirely on the setting of reinforcing ribs. Since this application adopts a split structure, the extrusion diameter of a single first half-aluminum cylinder 1 and / or second half-aluminum cylinder 2 is reduced during processing, which also significantly improves the flatness of each side plate. The setting of reinforcing ribs can only further increase the flatness of each side plate and improve the structural strength. In the prior art, since the entire large-diameter aluminum cylinder is directly extruded, it is extremely difficult to control the uniform force on each side plate of the aluminum cylinder after the extrusion diameter is enlarged, which will cause problems with poor processing accuracy and flatness.

[0039] In one embodiment of the present invention, the first side plate 11 and the second side plate 21 have the same thickness and the first connecting plate 12 and the second connecting plate 22 have the same thickness, or the first side plate 11, the second side plate 21, the first connecting plate 12, and the second connecting plate 22 all have the same thickness.

[0040] A processing device for large-diameter ultra-thin aluminum cylinders includes a first positioning mold 100 and a second positioning mold 200 that are mutually cooperating and arranged opposite each other along a first direction; the aluminum cylinder body 10 is positioned in the inner space formed by the first positioning mold 100 and the second positioning mold 200; the structure of the first positioning mold 100 and the second positioning mold 200 can effectively and quickly splice the first half aluminum cylinder 1 and the second half aluminum cylinder 2, preparing for subsequent laser welding and fixing, and also ensuring the consistency of the dimensions of the final aluminum cylinder body 10.

[0041] In one embodiment, the first positioning mold 100 includes a first base plate 110; two first positioning side plates 120 are connected to the first base plate 110 and are spaced apart and opposite to each other along a third direction; a second positioning side plate 130 is connected to one side of the first positioning side plate 120; the second positioning side plate 130 is disposed opposite to the second positioning mold 200; a second clearance groove 150 is formed between the two second positioning side plates 130; the first base plate 110 is provided with a first limiting groove 160 that is equivalent to the thickness of the aluminum cylinder body 10; the second positioning mold 200 includes a second base plate 210; The second base plate 210 is connected to two third positioning side plates 220 that are opposite to each other and spaced apart along a third direction; a fourth positioning side plate 230 is connected to one side of the third positioning side plate 220; the fourth positioning side plate 230 and the second positioning side plate 130 are arranged opposite to each other along a first direction; a third clearance groove 240 is formed between the two fourth positioning side plates 230; the second base plate 210 is provided with a second limiting groove 250 that is equivalent to the plate thickness of the aluminum cylinder body 10; the second clearance groove 150 and the third clearance groove 240 respectively correspond to a connection point between the first side plate 11 and the second side plate 21. The first positioning mold 100 and the second positioning mold 200 also adopt a splicing structure, which can improve the efficiency of splicing the first half aluminum cylinder 1 and the second half aluminum cylinder 2. The first limiting groove 160 and the second limiting groove 250 are used to limit the thin plate structure of the aluminum cylinder body 10, thereby effectively ensuring the docking accuracy of the splicing point of the first half aluminum cylinder 1 and the second half aluminum cylinder 2. The first positioning side plate 120, the second positioning side plate 130, the third positioning side plate 220, and the fourth positioning side plate 230 limit the outer surface of the aluminum cylinder body 10 through single-sided surface contact limiting. Since this part of the structure only limits the outer surface of the aluminum cylinder body 10... The positioning effectively improves the efficiency of installing the aluminum cylinder body 10 into the mold; the second clearance groove 150 and the third clearance groove 240 are set to reserve space for laser welding, which facilitates the rapid welding of the splicing position of the first half aluminum cylinder 1 and the second half aluminum cylinder 2. At the same time, the first limiting groove 160 is set close to the second clearance groove 150 and the second limiting groove 250 is set close to the third clearance groove 240, which can ensure that the splicing position of the first half aluminum cylinder 1 and the second half aluminum cylinder 2 is effectively limited. When the welding device applies a certain pressure to the splicing position, the first limiting groove 160 and the second limiting groove 250 can reduce the deformation and improve the quality of the finished product.

[0042] In one embodiment of this utility model, the length of the first positioning side plate 120 along the second direction is greater than the length of the second positioning mold 200 along the second direction. This arrangement facilitates the formation of a larger open space, providing a more ample viewing angle for the installation of the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2, thus improving the portability of the positioning. In another embodiment, the length of the first positioning side plate 120 along the first direction is greater than the length of the third positioning side plate 220 along the first direction. This not only ensures a sufficient viewing angle during installation but also ensures that the first positioning side plate 120 has a larger area to contact the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2, ensuring a limiting effect.

[0043] In one embodiment of this utility model, a first clearance groove 140 is formed on the side of the second positioning side plate 130 near the second clearance groove 150 at the end of the second positioning side plate 130 away from the first bottom plate 110. The first clearance groove 140 provides accommodating space when the clamp holds the first half aluminum cylinder 1 and the second half aluminum cylinder 2 into the first positioning mold 100, avoiding interference. It can be understood that, in one embodiment, the length of the first positioning side plate 120 along the second direction is the same as the length of the aluminum cylinder body 10 along the second direction, and a portion of the length of the second positioning side plate 130 along the second direction is the same as the length of the aluminum cylinder body 10 along the second direction, which can ensure a larger contact area with the aluminum cylinder body 10. When the clamp clamps the first half aluminum cylinder 1 and inserts it into the first positioning mold 100, the first clearance groove 140 allows the clamp to place the first half aluminum cylinder 1 onto the first bottom plate 110, which can prevent the first half aluminum cylinder 1 from colliding with the first bottom plate 110.

[0044] In one embodiment of the present invention, the length of the first positioning side plate 120 along the second direction is equivalent to the length of the aluminum cylinder body 10 along the second direction.

[0045] In one embodiment of this utility model, two first limiting grooves 160 are provided; a first limiting block 170 connected to a first base plate 110 is provided at one end of the second positioning side plate 130 near the second clearance groove 150; the first limiting block 170 and the second positioning side plate 130 are arranged opposite to each other and spaced apart along a first direction, and the gap between the first limiting block 170 and the second positioning side plate 130 forms the first limiting groove 160; two second limiting grooves 250 are provided; a second limiting block 260 connected to a second base plate 210 is provided at one end of the fourth positioning side plate 230 near the third clearance groove 240; the second limiting block 260 and the fourth positioning side plate 230 are arranged opposite to each other and spaced apart along a first direction, and the gap between the second limiting block 260 and the fourth positioning side plate 230 forms the second limiting groove 250. By reducing the use of limiting blocks, the positioning difficulty can be reduced. The spacing between the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2 during splicing is controlled by the spacing between the two first positioning side plates 120. In one embodiment, the top corner of the first limiting block 170 away from the first base plate 110 is rounded, and the top corner of the second limiting block 260 away from the second base plate 210 is also rounded. This design provides a guiding function, facilitating the installation of the first half-aluminum cylinder 1 and the second half-aluminum cylinder 2. In one embodiment, only one first limiting block 170 can be provided, such as... Figure 2 and Figure 3 In the diagram, the two first limiting blocks 170 shown can be connected into a single structure; similarly, the two second limiting blocks 260 can also be connected into a single structure.

[0046] In one embodiment of the present invention, the first base plate 110 is flush with the second base plate 210; the bottom of the first limiting groove 160 is flush with the upper surface of the first base plate 110; and the bottom of the second limiting groove 250 is flush with the upper surface of the second base plate 210.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A large-diameter ultra-thin aluminum cylinder, characterized in that: Includes an aluminum cylinder body (10); the aluminum cylinder body (10) includes a first half-aluminum cylinder (1) and a second half-aluminum cylinder (2) connected together. The first half-aluminum cylinder (1) includes two first side plates (11) arranged at relatively intervals; one end of the two first side plates (11) is connected by a first connecting plate (12); the first side plates (11) and the first connecting plate (12) have the same length direction along a second direction; the two first side plates (11) are arranged opposite each other along a first direction; the first direction is perpendicular to the plane where the first side plates (11) are located; the second direction is perpendicular to the first direction; the straight line formed at the connection between the first side plates (11) and the first connecting plate (12) is parallel to the second direction; The second half-aluminum cylinder (2) includes two second side plates (21) arranged at relatively intervals; one end of the two second side plates (21) is connected by a second connecting plate (22); the second side plates (21) and the second connecting plate (22) have the same length direction along a second direction; the two second side plates (21) are arranged opposite each other along a first direction; the first direction is perpendicular to the plane where the second side plates (21) are located; the straight line formed at the connection between the second side plates (21) and the second connecting plate (22) is parallel to the second direction; The first connecting plate (12) and the second connecting plate (22) are arranged opposite each other along a third direction; the first connecting plate (12) is connected to the end of the first side plate (11) away from the second half aluminum cylinder (2); the second connecting plate (22) is connected to the end of the second side plate (21) away from the first half aluminum cylinder (1); the first side plate (11) is connected to the second side plate (21); the third direction is perpendicular to the plane where the first connecting plate (12) and the second connecting plate (22) are located; the third direction is perpendicular to the first direction and the second direction.

2. The large-diameter ultra-thin aluminum cylinder according to claim 1, characterized in that: The first half-aluminum cylinder (1) and the second half-aluminum cylinder (2) have the same structure or are symmetrical to each other.

3. The large-diameter ultra-thin aluminum cylinder according to claim 1, characterized in that: The first side plate (11) and the first connecting plate (12) are each provided with a plurality of first reinforcing ribs (13); the second side plate (21) and the second connecting plate (22) are each provided with a plurality of second reinforcing ribs (23); the first reinforcing ribs (13) are parallel to the second direction; the second reinforcing ribs (23) are parallel to the second direction.

4. The large-diameter ultra-thin aluminum cylinder according to claim 1, characterized in that: The first side plate (11) and the second side plate (21) have the same thickness and the first connecting plate (12) and the second connecting plate (22) have the same thickness, or the first side plate (11), the second side plate (21), the first connecting plate (12), and the second connecting plate (22) all have the same thickness.

5. The processing apparatus for large-diameter ultra-thin aluminum cylinders according to any one of claims 1-4, characterized in that: It includes a first positioning mold (100) and a second positioning mold (200) that cooperate with each other and are arranged opposite to each other along a first direction; the aluminum cylinder body (10) is positioned in the inner space formed by the first positioning mold (100) and the second positioning mold (200); The first positioning mold (100) includes a first base plate (110); two first positioning side plates (120) are connected to the first base plate (110) and are arranged opposite to each other and spaced apart along a third direction; a second positioning side plate (130) is connected to one side of the first positioning side plate (120); the second positioning side plate (130) is arranged opposite to the second positioning mold (200); a second clearance groove (150) is formed between the two second positioning side plates (130); the first base plate (110) is provided with a first limiting groove (160) that is equivalent to the thickness of the aluminum cylinder body (10). The second positioning mold (200) includes a second base plate (210); two third positioning side plates (220) are connected to the second base plate (210) and are arranged opposite to each other along a third direction and spaced apart; a fourth positioning side plate (230) is connected to one side of the third positioning side plate (220); the fourth positioning side plate (230) and the second positioning side plate (130) are arranged opposite to each other along a first direction; a third clearance groove (240) is formed between the two fourth positioning side plates (230); a second limiting groove (250) is provided on the second base plate (210) with a plate thickness equivalent to that of the aluminum cylinder body (10); the second clearance groove (150) and the third clearance groove (240) correspond to a connection point of the first side plate (11) and the second side plate (21), respectively.

6. The processing device for a large-diameter ultra-thin aluminum cylinder according to claim 5, characterized in that: The length of the first positioning side plate (120) along the second direction is greater than the length of the second positioning mold (200) along the second direction.

7. The processing device for a large-diameter ultra-thin aluminum cylinder according to claim 5, characterized in that: The second positioning side plate (130) near the second relief groove (150) has a first relief groove (140) formed at the end of the second positioning side plate (130) away from the first bottom plate (110).

8. The processing device for a large-diameter ultra-thin aluminum cylinder according to claim 5, characterized in that: The length of the first positioning side plate (120) along the second direction is equivalent to the length of the aluminum cylinder body (10) along the second direction.

9. The processing device for a large-diameter ultra-thin aluminum cylinder according to claim 5, characterized in that: Two first limiting grooves (160) are provided; the second positioning side plate (130) is provided with a first limiting block (170) connected to the first base plate (110) at one end near the second clearance groove (150); the first limiting block (170) and the second positioning side plate (130) are arranged opposite to each other and spaced apart along the first direction, and the gap between the first limiting block (170) and the second positioning side plate (130) forms the first limiting groove (160). Two second limiting grooves (250) are provided; the fourth positioning side plate (230) is provided with a second limiting block (260) connected to the second base plate (210) at one end near the third clearance groove (240); the second limiting block (260) and the fourth positioning side plate (230) are opposite to each other and spaced apart along the first direction, and the gap between the second limiting block (260) and the fourth positioning side plate (230) forms the second limiting groove (250).

10. The processing device for a large-diameter ultra-thin aluminum cylinder according to claim 5, characterized in that: The first base plate (110) is flush with the second base plate (210); the bottom of the first limiting groove (160) is flush with the upper surface of the first base plate (110); the bottom of the second limiting groove (250) is flush with the upper surface of the second base plate (210).

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