Large cylindrical battery with current collecting disc of riveted structure and steel shell and preparation device of large cylindrical battery

Abstract

The invention discloses a large cylindrical battery with a current collecting disc and a steel shell of a riveted structure and a preparation device, and relates to the field of battery devices. The invention relates to a large cylindrical battery with a collector plate and a steel shell of a riveted structure and a preparation device, the large cylindrical battery comprises a steel shell body, a positive pole hole is formed in the upper part of the steel shell body, and a collector plate body is connected in the steel shell body in a sliding manner; the collector plate body comprises a base plate and a rivet piece fixedly connected with the base plate, a riveting hole is formed in the rivet piece, an ejector pin is connected to the riveting hole in a sliding mode, and the rivet piece is connected into the positive pole column hole in a sliding mode; the base disc is sequentially sleeved with an insulating spacer A, a rubber spacer, an insulating spacer B and a copper sheet from bottom to top through rivets. Various hidden danger problems caused by welding can be avoided, the manufacturing cost can be reduced, the manufacturing yield can be improved, meanwhile, the steps of manual operation are reduced during riveting, the operation time is saved, and the riveting efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery devices, and in particular, relates to a large cylindrical battery with a current collecting plate and a steel shell having a riveted structure and a preparation device. Background Art

[0002] With the rapid development of new energy vehicles and energy storage markets, higher requirements have been placed on the energy density, safety and cost of batteries. Large cylindrical batteries have emerged. By optimizing the battery structure and using advanced materials and processes, high energy density, long cycle life and high safety performance have been achieved. This type of battery is not only suitable for electric vehicles, energy storage systems and other fields, but has also gradually penetrated into emerging fields such as small power and electric aviation. With the continuous advancement of technology and the reduction of costs, the market prospects of large cylindrical batteries will be broader.

[0003] In the manufacturing process of large cylindrical batteries, the steel shell and the current collector are two separate entities. According to the current battery structure, laser welding is often used between the steel shell and the current collector. However, since aluminum easily reacts with air, a dense oxide film will be formed on the surface of the material, resulting in changes in the melting point of the aluminum material on the welding surface. Welding is very likely to generate surface wrinkles or slag inclusions. Due to its own "high reflection" characteristics, aluminum material has poor energy utilization, and over-welding / cold welding is prone to occur during welding, resulting in poor welding yield, thereby affecting production efficiency and cost. Based on this, the present invention is proposed, which can simply and effectively connect the shell and the current collector, thereby avoiding the impact of laser welding. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a large cylindrical battery with a riveted structure current collecting plate and a steel shell and a preparation device that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a large cylindrical battery with a riveted structure current collector and a steel shell, comprising a steel shell body, and also comprising: a positive pole hole is opened above the steel shell body, and the current collector body is slidably connected in the steel shell body; the current collector body includes a base plate and a rivet member fixedly connected to the base plate, a rivet hole is opened on the rivet member, and a ejector pin is slidably connected to the positive pole hole; the base plate is sequentially sleeved with an insulating gasket A, a rubber gasket, an insulating gasket B and a copper sheet from bottom to top through the rivet member, the insulating gasket A and the rubber gasket are located between the steel shell body and the base plate, and the insulating gasket B and the copper sheet are located between the steel shell body and the ejector pin; when the ejector pin is pressed downward by an external stamping part, the ball at the top of the ejector pin enters the rivet hole and pushes the rivet member outward to squeeze the copper sheet downward to form a clamping fixation to the steel shell body with the base plate.

[0006] Preferably, an insulating layer is provided on the top inner wall of the steel shell body, and the insulating layer is specifically one of a heat-resistant plastic part or an insulating coating, and the position of the insulating layer corresponds to the position of the base plate, the insulating gasket A and the rubber gasket.

[0007] Furthermore, the insulating gasket A, rubber gasket, insulating gasket B and copper sheet are all provided with circular holes of the same size, the diameter of the circular holes is the same as the diameter of the rivet part, the outer diameter of the copper sheet is smaller than the outer diameter of the insulating gasket A, rubber gasket and insulating gasket B, and the circular hole on the copper sheet is provided with a rivet groove, which is used to connect with the rivet part after extrusion and deformation.

[0008] Furthermore, a welding area is provided on the top of the base plate, and an electrolytic medium is also provided in the steel shell body, and the electrolytic medium is in contact with the bottom of the base plate.

[0009] A preparation device for preparing a large cylindrical battery with a riveted structure collector plate and a steel shell, comprising a support table, and also includes: a support plate fixedly connected to the support table, a rotating shaft rotatably connected to the support plate, a bottom plate fixedly connected to the rotating shaft, and support rods fixedly connected to both sides of the bottom plate; a support block slidably connected to the support rod, a top block fixedly connected to the support block, and the top block is used to provide support for the base plate; a support frame fixedly connected to the support table, a cylinder fixedly connected to the support frame, and a fixed block fixedly connected to the output end of the cylinder; a circular slide groove is provided on the fixed block, a limiting block is slidably connected to the circular slide groove, and the bottom of the limiting block is provided with a chamfer to assist in limiting the steel shell body.

[0010] Preferably, a connecting rod is fixedly connected to the fixed block, a limiting rod is slidably connected to the connecting rod, the limiting rod is fixedly connected to a ratchet plate, and a second compression spring is connected between the ratchet plate and the connecting rod.

[0011] Furthermore, a ratchet gear is fixedly connected to the rotating shaft, the ratchet gear is meshed with a ratchet plate, and the number of ratchet teeth on the ratchet plate is half of the number of ratchet teeth on the ratchet gear.

[0012] Preferably, a first compression spring is connected between the fixed block and the limiting block, and the ejector block is fixedly connected to the limiting block, and riveting is completed when the fixed block squeezes the bottom of the ejector pin to contact the limiting block.

[0013] Preferably, a push rod is slidably connected to the upper and lower support blocks, and the push rod is slidably connected to the bottom plate. A third compression spring is connected between the support block and the bottom plate. When the support block above the bottom plate moves downward under pressure, the steel shell body squeezes the push rod downward and is ejected from the support block below.

[0014] Preferably, a material discharge port is provided on the support platform, the material discharge port corresponds to the position of the support block, and the material discharge port is used to receive the large cylindrical battery dropped from the support block.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0016] 1. The present invention fixes the collecting plate by riveting with rivets, and uses riveting instead of welding, which can avoid various hidden dangers caused by welding, is conducive to reducing process costs, and is conducive to improving the process qualification rate, thereby achieving the purpose of reducing costs and increasing efficiency.

[0017] 2. In the present invention, the fixed block drives the limit block to move downward during the riveting process. Under the action of the first compression spring, the limit block can compact the current collecting plate, insulating gasket A, insulating gasket B, rubber gasket and copper sheet to avoid gaps between these components during the assembly process, and can also assist in positioning the battery to be installed.

[0018] 3. The present invention can also automatically demould the riveted battery while riveting, thereby reducing the steps of manual operation, saving operation time and improving riveting efficiency.

[0019] 4. In the present invention, the top block can prevent the punching device from exerting excessive pressure on the collector plate, insulating gasket A, insulating gasket B, rubber gasket, and copper sheet during the riveting process, thereby causing damage or deformation of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the attached picture:

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a large cylindrical battery with a riveted current collecting plate and a steel shell proposed by the present invention;

[0022] Figure 2 A schematic diagram of the structure of a steel shell body in a large cylindrical battery with a riveted current collecting plate and a steel shell proposed by the present invention;

[0023] Figure 3 A cross-sectional view of a large cylindrical battery with a riveted current collecting plate and a steel shell proposed by the present invention;

[0024] Figure 4 A large cylindrical battery with a riveted structure current collecting plate and a steel shell proposed by the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 5 A structural view above the current collecting plate body in a large cylindrical battery with a current collecting plate and a steel shell having a riveted structure proposed by the present invention;

[0026] Figure 6 A schematic diagram of the structure of a current collecting plate body in a large cylindrical battery with a current collecting plate having a riveted structure and a steel shell proposed by the present invention;

[0027] Figure 7 A schematic diagram of the structure of a circular hole in a large cylindrical battery with a riveted current collecting plate and a steel shell proposed by the present invention;

[0028] Figure 8 A schematic diagram of the structure of a device for preparing a large cylindrical battery with a riveted current collecting plate and a steel shell proposed by the present invention;

[0029] Fig. 9 The invention provides a manufacturing device for a large cylindrical battery with a riveted structure current collecting plate and a steel shell. Figure 8 A schematic diagram of the enlarged structure at B in the middle;

[0030] Fig.10 A cross-sectional view of a manufacturing device for a large cylindrical battery with a riveted current collecting plate and a steel shell proposed by the present invention;

[0031] Fig.11 A cross-sectional view of a support block in a manufacturing device for a large cylindrical battery with a riveted structure current collecting plate and a steel shell proposed by the present invention;

[0032] Fig.12 The invention provides a manufacturing device for a large cylindrical battery with a riveted structure current collecting plate and a steel shell. Fig.10 Schematic diagram of the enlarged structure at point C in the middle.

[0033] In the figure: 1, steel shell body; 101, insulating layer; 102, electrolyte; 103, positive pole hole; 2, collector plate body; 201, base plate; 202, welding area; 203, rivet piece; 204, riveting hole; 205, ejector pin; 3, insulating gasket A; 301, round hole; 4, rubber gasket; 5, insulating gasket B; 6, copper sheet; 601, riveting groove; 7, support platform; 71, support plate; 72, support Support frame; 73, cylinder; 74, bottom plate; 75, rotating shaft; 751, ratchet gear; 76, feed port; 8, fixing block; 81, circular slide groove; 82, limit block; 83, first compression spring; 84, connecting rod; 85, ratchet plate; 851, limit rod; 852, second compression spring; 9, support block; 91, top block; 92, limit block; 93, support rod; 94, third compression spring; 95, top rod. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0035] Example 1: Reference Figure 1-Figure 7 A large cylindrical battery with a riveted current collector and a steel shell, comprising a steel shell body 1, and further comprising: a positive pole hole 103 is opened on the top of the steel shell body 1, and a current collector body 2 is slidably connected in the steel shell body 1; the current collector body 2 includes a base plate 201 and a rivet member 203 fixedly connected to the base plate 201, a rivet hole 204 is opened on the rivet member 203, a ejector pin 205 is slidably connected to the rivet hole 204, and the rivet member 203 is slidably connected in the positive pole hole 103; the base plate 201 is connected to the positive pole hole 103 by The rivet part 203 is sequentially sleeved with an insulating gasket A3, a rubber gasket 4, an insulating gasket B5 and a copper sheet 6 from bottom to top. The insulating gasket A3 and the rubber gasket 4 are located between the steel shell body 1 and the base plate 201, and the insulating gasket B5 and the copper sheet 6 are located between the steel shell body 1 and the ejector pin 205. When the ejector pin 205 is pressed downward by an external stamping part, the ball on the top of the ejector pin 205 enters the riveting hole 204 and stretches the rivet part 203 outward to squeeze the copper sheet 6 downward to clamp and fix the steel shell body 1 with the base plate 201.

[0036] The present invention is different from the traditional large cylindrical battery in that a cylindrical rivet member 203 is provided on the base plate 201, so that the rivet member 203 can be inserted into the steel shell body 1 through the positive pole hole 103, and the insulating gasket A3, the rubber gasket 4, the insulating gasket B5 and the copper sheet 6 can be sequentially sleeved on the rivet member 203 to complete the installation of the internal structure of the large cylindrical battery. The insulating gasket A3 and the insulating gasket B5 are used to isolate the current inside the battery, and the rubber gasket 4 can prevent the electrolyte inside the battery from flowing out from the connection. When all the components are installed in sequence, the ejector pin 205 can be pressed into the riveting hole 204 through an external extrusion component, wherein the ejector pin 205 is composed of a cylindrical needle body at the bottom and a spherical needle head at the top, and the diameter of the cylindrical needle body is the same as the diameter of the riveting hole 204. Similarly, the diameter of the spherical needle head is larger than the diameter of the cylindrical needle body, so that when the ejector pin 205 is squeezed into the riveting hole 204, the spherical needle head will squeeze the rivet part 203 outward to cause the rivet part 203 to expand and deform. As the ejector pin 205 moves downward, the expanded part of the rivet part 203 becomes more and more, directly squeezing the copper sheet 6 downward, so that a clamping relationship is formed between the copper sheet 6 and the base plate 201 to clamp the components between the two, and the clamped components include the steel shell body 1, thereby completing the fixation of all the components to the steel shell, solving the various hidden dangers caused by the need to weld various components to the steel shell body 1. Replacing the welding method with riveting is conducive to reducing the process cost and improving the process qualification rate, thereby achieving the purpose of reducing costs and increasing efficiency.

[0037] Example 2: Reference Figure 1-Figure 7 A large cylindrical battery with a riveted current collecting plate and a steel shell is basically the same as Example 1, and further, an insulating layer 101 is provided on the top inner wall of the steel shell body 1, and the insulating layer 101 is specifically one of a heat-resistant plastic part or an insulating coating. The position of the insulating layer 101 corresponds to the position of the base plate 201, the insulating gasket A3 and the rubber gasket 4, and the insulating gasket A3, the rubber gasket 4, the insulating gasket B5 and the copper sheet 6 are all provided with circular holes 301 of the same size. The diameter of the circular hole 301 is the same as the diameter of the rivet part 203. The outer diameter of the copper sheet 6 is smaller than the outer diameters of the insulating gasket A3, the rubber gasket 4 and the insulating gasket B5. The circular hole 301 on the copper sheet 6 is provided with a rivet groove 601, which is used to connect with the rivet part 203 after extrusion and deformation. A welding area 202 is provided on the top of the base plate 201, and an electrolytic medium 102 is also provided in the steel shell body 1, and the electrolytic medium 102 is in contact with the bottom of the base plate 201.

[0038] In the present invention, the insulating layer 101 can mainly prevent the electrons inside the battery from contacting with the insulating gasket A3 and the rubber gasket 4 to produce adverse effects. By providing a rivet groove 601 in the circular hole 301 on the copper sheet 6, the contact area between the copper sheet 6 and the rivet member 203 that is stretched and deformed by the ejector pin 205 can be increased, thereby enhancing the fixing effect after riveting.

[0039] When placing the collecting plate body 2, it is placed from the bottom of the steel shell body 1. After the collecting plate body 2 is fixed by riveting, the electrolytic medium 102 is filled into the steel shell body 1, and then the bottom of the steel shell body 1 is sealed, so that a large cylindrical battery can be formed. The welding area 202 on the base plate 201 can connect the battery electrodes or other electronic components to the bottom of the collecting plate body 2. Through welding, the concentrated flow of current on the collecting plate body 2 can be achieved.

[0040] Example 3: Reference Figure 1-Figure 12 , a preparation device for preparing a large cylindrical battery with a riveted structure collector plate and a steel shell, including a support platform 7, and also including: a support plate 71 is fixedly connected to the support platform 7, a rotating shaft 75 is rotatably connected to the support plate 71, a bottom plate 74 is fixedly connected to the rotating shaft 75, and both sides of the bottom plate 74 are fixedly connected to support rods 93; a support block 9 is slidably connected to the support rod 93, a top block 91 is fixedly connected to the support block 9, and the top block 91 is used to provide support for the base plate 201; a support frame 72 is fixedly connected to the support platform 7, a cylinder 73 is fixedly connected to the support frame 72, and a fixed block 8 is fixedly connected to the output end of the cylinder 73; a circular slide groove 81 is opened on the fixed block 8, and a limiting block 82 is slidably connected to the circular slide groove 81, and the bottom of the limiting block 82 is provided with a chamfer to assist in limiting the steel shell body 1.

[0041] In the present invention, after the user completes the splicing of all structures in a predetermined order, the assembled battery assembly can be placed on the support block 9 through the steel shell body 1, and then the cylinder 73 is started to drive the fixing block 8 to move downward. During the downward movement, the limiting block 82 first contacts the steel shell body 1. Under the guidance of the chamfer, the limiting block 82 can limit the position of the steel shell body 1 to ensure that the position of the steel shell body 1 will not be offset during the riveting process. Then the fixing block 8 continues to move downward to squeeze the ejector pin 205 to complete the riveting.

[0042] Because the pressure generated during the riveting process is relatively large, in order to prevent the base plate 201 from being deformed or damaged, a top block 91 is designed on the support block 9. The diameter of the top block 91 is slightly larger than the diameter of the rivet part 203, so that most of the pressure during the riveting process is borne by the rivet part 203. The rivet part 203 is cylindrical and can withstand greater pressure and is not easily deformed. This design can effectively reduce the damage to parts that may be caused during the riveting process.

[0043] Example 4: Reference Figure 1-Figure 12 , a preparation device for preparing a large cylindrical battery with a riveted structure collector plate and a steel shell, which is basically the same as Example 3, and further: a connecting rod 84 is fixedly connected to the fixing block 8, and a limiting rod 851 is slidably connected to the connecting rod 84, and a ratchet plate 85 is fixedly connected to the limiting rod 851, and a second compression spring 852 is connected between the ratchet plate 85 and the connecting rod 84, and a ratchet gear 751 is fixedly connected to the rotating shaft 75, and the ratchet gear 751 is meshed with the ratchet plate 85, and the number of ratchet teeth on the ratchet plate 85 is half of the number of ratchet teeth on the ratchet gear 751, and a first compression spring is connected between the fixing block 8 and the limiting block 82. Spring 83, a limit block 92 is fixedly connected to the top block 91, and the riveting is completed when the fixed block 8 squeezes the bottom of the ejector pin 205 to contact the limit block 92. The upper and lower support blocks 9 are slidably connected with a ejector rod 95, and the ejector rod 95 is slidably connected to the bottom plate 74. A third compression spring 94 is connected between the support block 9 and the bottom plate 74. When the support block 9 above the bottom plate 74 moves downward under pressure, the steel shell body 1 squeezes the ejector rod 95 to move downward and is ejected from the support block 9 below. A discharge port 76 is opened on the support platform 7, and the discharge port 76 corresponds to the position of the support block 9. The discharge port 76 is used to receive the large cylindrical battery dropped from the support block 9.

[0044] In the present invention, there is an interference fit between the rotating shaft 75 and the support plate 71. When the fixed block 8 moves downward, it drives the connecting rod 84 to move downward together, and the connecting rod 84 drives the ratchet plate 85 to move together. The back of the ratchet teeth on the ratchet plate 85 passes over the ratchet gear 751. At this time, the rotating shaft 75 will not rotate. When the riveting is completed, the fixed block 8 drives the connecting rod 84 and the ratchet plate 85 to move upward together. During the upward movement of the ratchet plate 85, under the action of the second compression spring 852, the ratchet plate 85 drives the ratchet gear 751 to rotate together, and the number of ratchet teeth on the ratchet plate 85 is half of the number of ratchet teeth on the ratchet gear 751. Therefore, the ratchet plate 85 will drive the ratchet gear 751 and the rotating shaft 75 to rotate half a circle, thereby driving the bottom plate 74 to flip, so that the support block 9 and the riveted large cylindrical battery face downward, and the original support block 9 at the bottom is transferred to When the flipped support block 9 is riveted with a large cylindrical battery, as the fixed block 8 is pressed downward, the support block 9 also moves downward until the support block 9 contacts the upper surface of the support rod 93, wherein the push rod 95 is connected and slides on the upper and lower support blocks 9, and the diameter of the positions at both ends of the push rod 95 corresponding to the push block 91 is larger than the diameter of the sliding part inside the support block 9, so that when the steel shell body 1 is sleeved on the support block 9, as the steel shell body 1 and the support block 9 are pressed downward by the fixed block 8, the push rod 95 will move downward synchronously, and at this time, the support block 9 located below is already at the farthest distance that can be moved downward under the limit of the support rod 93, so that the push rod 95 can push the completed large cylindrical battery on the support block 9 out of the support block 9 and drop it out from the discharge port 76, completing the automatic discharge operation;

[0045] By arranging the first compression spring 83 between the limit block 82 and the fixed block 8, the limit block 82 will first form a preliminary clamping of the insulating gasket A3, the rubber gasket 4, the insulating gasket B5 and the copper sheet 6 with the limit block 92 before the fixed block 8 contacts the ejector pin 205, thereby avoiding the situation that the gap between the insulating gasket A3, the rubber gasket 4, the insulating gasket B5 and the copper sheet 6 is too large or the parts are tilted and stuck during manual assembly and installation, which may cause the parts to be damaged during the riveting process. The bottom surface of the fixed block 8 located inside the circular slide groove 81 is lower than the bottom surface of the fixed block 8 located outside the circular slide groove 81, so that a certain distance can be left between the fixed block 8 and the limit block 82 during the riveting process, avoiding the problem that the first compression spring 83 is compressed too much and exerts too much pressure on the limit block 82, causing damage to the parts below.

[0046] By setting a limit block 92 on the top block 91, the limit block 92 is inserted into the rivet hole 204, and the limit block 92 and the rivet hole 204 have a slight interference fit. On the one hand, the auxiliary fixation of the large cylindrical battery can be completed through the interference fit of the insertion. Secondly, the limit block 92 limits the downward movement of the ejector pin 205, which can ensure the riveting depth of the ejector pin 205 each time riveting;

[0047] When in use, the user first places the collecting device under the discharge port 76, then assembles the large cylindrical parts and puts them on the support block 9, and then starts the cylinder 73 to drive the fixed block 8 to move down for riveting. After the riveting is completed, the fixed block 8 is reset, and the ratchet plate 85 drives the ratchet gear 751 and the bottom plate 74 to flip over. The user can continue to put the large cylindrical battery on the support block 9. During the second riveting process, the push rod 95 pushes the riveted large cylindrical battery below from the support block 9 and drops it into the collecting device. Finally, the large cylindrical battery is made by filling the electrolytic medium 102 into the steel shell body 1 and installing the battery cell, and then sealing the bottom of the steel shell body 1.

[0048] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the present invention can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A large cylindrical battery with a riveted current collecting plate and a steel shell, comprising a steel shell body (1), characterized in that: Also includes: A positive pole hole (103) is provided above the steel shell body (1), and a current collecting plate body (2) is slidably connected inside the steel shell body (1); The current collecting plate body (2) comprises a base plate (201) and a rivet member (203) fixedly connected to the base plate (201), the rivet member (203) is provided with a rivet hole (204), a thimble (205) is slidably connected to the rivet hole (204), and the rivet member (203) is slidably connected in the positive pole hole (103); The base plate (201) is provided with an insulating gasket A (3), a rubber gasket (4), an insulating gasket B (5) and a copper sheet (6) in sequence from bottom to top via a rivet member (203); the insulating gasket A (3) and the rubber gasket (4) are located between the steel shell body (1) and the base plate (201); and the insulating gasket B (5) and the copper sheet (6) are located between the steel shell body (1) and the ejector pin (205); When the ejector pin (205) is pressed downward by the external stamping part, the ball on the top of the ejector pin (205) enters the riveting hole (204) and pushes the rivet part (203) outward to extrude the copper sheet (6) downward to clamp and fix the steel shell body (1) with the base plate (201).

2. A large cylindrical battery with a riveted current collecting plate and a steel shell according to claim 1, characterized in that: An insulating layer (101) is provided on the top inner wall of the steel shell body (1), and the insulating layer (101) is specifically one of a heat-resistant plastic part or an insulating coating. The position of the insulating layer (101) corresponds to the position of the base plate (201), the insulating gasket A (3) and the rubber gasket (4).

3. A large cylindrical battery with a riveted current collecting plate and a steel shell according to claim 2, characterized in that: The insulating gasket A (3), the rubber gasket (4), the insulating gasket B (5) and the copper sheet (6) are all provided with circular holes (301) of the same size, the diameter of the circular hole (301) is the same as the diameter of the rivet piece (203), the outer diameter of the copper sheet (6) is smaller than the outer diameters of the insulating gasket A (3), the rubber gasket (4) and the insulating gasket B (5), and the circular hole (301) on the copper sheet (6) is provided with a rivet groove (601), and the rivet groove (601) is used to connect with the rivet piece (203) after extrusion deformation.

4. A large cylindrical battery with a riveted current collecting plate and a steel shell according to claim 3, characterized in that: A welding area (202) is provided on the top of the base plate (201), and an electrolytic medium (102) is also provided in the steel shell body (1), and the electrolytic medium (102) is in contact with the bottom of the base plate (201).

5. A device for preparing a large cylindrical battery with a riveted structure collector plate and a steel shell as claimed in claim 4, comprising a support table (7), characterized in that: Also includes: The support platform (7) is fixedly connected to a support plate (71), the support plate (71) is rotatably connected to a rotation shaft (75), the rotation shaft (75) is fixedly connected to a bottom plate (74), and both sides of the bottom plate (74) are fixedly connected to support rods (93); A support block (9) is slidably connected to the support rod (93), a top block (91) is fixedly connected to the support block (9), and the top block (91) is used to provide support for the base plate (201); The support platform (7) is fixedly connected to a support frame (72), the support frame (72) is fixedly connected to a cylinder (73), and the output end of the cylinder (73) is fixedly connected to a fixed block (8); The fixing block (8) is provided with a circular sliding groove (81), and a limiting clamping block (82) is slidably connected to the circular sliding groove (81), and a chamfer is provided at the bottom of the limiting clamping block (82) for assisting in limiting the steel shell body (1).

6. The manufacturing device of a large cylindrical battery with a riveted structure collector plate and a steel shell according to claim 5, characterized in that: The fixed block (8) is fixedly connected to a connecting rod (84), the connecting rod (84) is slidably connected to a limiting rod (851), the limiting rod (851) is fixedly connected to a ratchet plate (85), and a second compression spring (852) is connected between the ratchet plate (85) and the connecting rod (84).

7. The manufacturing device of a large cylindrical battery with a riveted structure collector plate and a steel shell according to claim 6, characterized in that: A ratchet gear (751) is fixedly connected to the rotating shaft (75), and the ratchet gear (751) is meshed with a ratchet plate (85). The number of ratchet teeth on the ratchet plate (85) is half the number of ratchet teeth on the ratchet gear (751).

8. The device for preparing a large cylindrical battery with a riveted current collecting plate and a steel shell according to claim 5, characterized in that: A first compression spring (83) is connected between the fixed block (8) and the limiting block (82), and the limiting block (92) is fixedly connected to the ejector block (91). When the fixed block (8) squeezes the bottom of the ejector pin (205) to contact the limiting block (92), riveting is completed.

9. The manufacturing device of a large cylindrical battery with a riveted structure collector plate and a steel shell according to claim 5, characterized in that: A push rod (95) is slidably connected to the upper and lower support blocks (9), and the push rod (95) is slidably connected to the bottom plate (74). A third compression spring (94) is connected between the support block (9) and the bottom plate (74). When the support block (9) above the bottom plate (74) moves downward under pressure, the steel shell body (1) squeezes the push rod (95) downward and is ejected from the support block (9) below.

10. The manufacturing device of a large cylindrical battery with a riveted structure current collecting plate and a steel shell according to claim 5, characterized in that: The support platform (7) is provided with a discharge port (76), the discharge port (76) corresponds to the position of the support block (9), and the discharge port (76) is used to receive the large cylindrical battery dropped from the support block (9).

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