Laser welding device for cylindrical sodium ion battery

Abstract

The utility model discloses a laser welding device for a cylindrical sodium ion battery. The laser welding device comprises a supporting base; the device has the advantages that by arranging the movable rack, the gear and the rotating rod, the effect that the output end of the second air cylinder drives the movable rack to move is achieved, the movable rack drives the meshed gear to rotate when moving, and the movable rack is driven to rotate when moving; when a gear rotates, a rotating rod on the inner side is driven to rotate, a movable rack drives the gear to rotate by 180 degrees, the rotating rod and a rotating top disc rotate by 180 degrees, the positions of two positioning frames are exchanged, and laser welding feeding is conveniently conducted on batteries in positioning grooves; the positioning frame and the positioning groove are driven to move through the movable sliding table of the linear module, the cylindrical sodium ion battery is positioned and fixed during welding, and the welding stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, specifically to a laser welding device for a cylindrical sodium-ion battery. Background Technology

[0002] The negative electrode tab is a crucial component of a battery, connecting the internal negative terminal to the external circuitry. The battery casing protects the internal structure and electrolyte. The weld between the negative electrode tab and the casing must be strong and reliable to ensure proper battery operation and safety. Laser welding is an efficient and precise method for connecting the negative electrode tab and casing, achieving high precision and ensuring a tight, seamless connection. However, most existing laser welding equipment lacks accuracy in positioning the negative electrode tab and casing, leading to cumbersome positioning adjustments during welding. Furthermore, the high efficiency of continuous, large-scale battery welding processes results in low overall welding efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a laser welding device for cylindrical sodium-ion batteries, in order to solve the problems mentioned in the background art, such as the inaccurate welding positioning between the battery negative electrode tab and the battery steel shell, the troublesome positioning adjustment during welding, the low welding efficiency of batteries in large-scale continuous welding processing.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a laser welding device for a cylindrical sodium-ion battery, comprising:

[0005] Support base;

[0006] Rotate the top plate, which is mounted on top of the support base;

[0007] Fixed top boxes are symmetrically arranged on top of the rotating top plate;

[0008] Install the sliding plate, which is mounted on top of the fixed top box;

[0009] The positioning frame is bolted to the top of the mounting plate, and the top of the positioning frame has multiple positioning slots at equal intervals.

[0010] The No. 1 support side frame is located on one side of the support base;

[0011] Fixed bracket, which is set on the top of the first support side frame;

[0012] The sliding inner plate is slidably mounted on the inside of the fixed bracket;

[0013] The second support side frame is located on one side of the sliding inner plate, and a fixing sleeve is fixedly connected to one side of the second support side frame.

[0014] The positioning conduit is located inside the fixing sleeve.

[0015] As a preferred embodiment of this utility model, it further includes a fixed base box, which is fixedly connected to the bottom of the support base. A rotating rod is rotatably arranged inside the fixed base box. The rotating rod is rotatably connected to the support base. The top end of the rotating rod is fixedly connected to the rotating top plate. A gear is fixedly connected to the outside of the rotating rod. A movable rack is slidably arranged inside the fixed base box. The movable rack is meshed with the gear. A second cylinder is installed on one side of the fixed base box. The output end of the second cylinder is fixedly connected to the movable rack.

[0016] As a preferred embodiment of this utility model, it further includes a support frame, which is disposed on one side of the support base. The support frame is equipped with a laser welding machine body that cooperates with the positioning guide tube, and a welding lens is disposed at the bottom of the laser welding machine body.

[0017] As a preferred embodiment of this utility model: a cylinder is installed on the top of the fixed bracket, the output end of the cylinder is fixedly connected to the sliding inner plate, and a limiting slide rod is symmetrically fixed to the top of the sliding inner plate, and the limiting slide rod is slidably connected to the fixed bracket.

[0018] As a preferred embodiment of this utility model: a linear module is installed inside the fixed top box, and the movable slide of the linear module is connected to the mounting slide plate.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a movable rack, gear, and rotating rod, this utility model realizes that the output end of the second cylinder drives the movable rack to move. When the movable rack moves, it drives the meshing gear to rotate. When the gear rotates, it drives the inner rotating rod to rotate. The movable rack drives the gear to rotate 180 degrees, which in turn rotates the rotating rod and the rotating top plate 180 degrees, thus exchanging the positions of the two positioning frames. This facilitates the laser welding and loading of the battery in the positioning slot. By setting up a linear module, the movable slide of the linear module drives the positioning frame and positioning slot to move, thereby fixing the position of the cylindrical sodium-ion battery during welding and improving the stability of the welding. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a right view of the present invention;

[0022] Figure 3This is a schematic diagram of the internal structure of the fixed base box of this utility model.

[0023] In the diagram: 1. Support base; 2. Rotating top plate; 3. Support frame; 4. Laser welding body; 5. Fixed top box; 6. Positioning frame; 7. Positioning groove; 8. Linear module; 9. First support side frame; 10. Fixed bracket; 11. First cylinder; 12. Limiting slide bar; 13. Sliding inner plate; 14. Second support side frame; 15. Fixed sleeve; 16. Positioning guide tube; 17. Fixed base box; 18. Second cylinder; 19. Moving rack; 20. Rotating rod; 21. Gear; 22. Mounting slide plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 3 This utility model provides a technical solution: a laser welding device for a cylindrical sodium-ion battery, comprising: a support base 1; a rotating top plate 2 rotatably disposed on the top of the support base 1; a fixed top box 5 symmetrically fixed to the top of the rotating top plate 2; a mounting slide plate 22 slidably disposed on the top of the fixed top box 5; a positioning frame 6 mounted on the top of the mounting slide plate 22 by bolts, the top of the positioning frame 6 having multiple positioning grooves 7 equidistantly provided; a first support side frame 9 fixedly disposed on one side of the support base 1; a fixed bracket 10 fixedly disposed on the top of the first support side frame 9; a sliding inner plate 13 slidably disposed on the inner side of the fixed bracket 10; a second support side frame 14 fixedly disposed on one side of the sliding inner plate 13, a fixed sleeve 15 fixedly disposed on one side of the second support side frame 14; and a positioning guide tube 16 fixedly disposed on the inner side of the fixed sleeve 15.

[0026] Understandably, this invention places the cylindrical sodium-ion battery to be welded in the positioning groove 7 of the positioning frame 6, positions the cylindrical sodium-ion battery through the positioning groove 7, controls it through an external controller, and powers it through an external power source. The output end of the second cylinder 18 drives the moving rack 19 to move, and when the moving rack 19 moves, it drives the meshing gear 21 to rotate. The moving rack 19 drives the gear 21 to rotate 180 degrees, and the gear 21 drives the inner rotating rod 20 to rotate synchronously. When the rotating rod 20 rotates, it drives the rotating top plate 2 to rotate, thereby exchanging the positions of the two positioning frames 6 and the positioning groove 7. The output end of the first cylinder 11 drives the sliding inner plate 13, the second support side frame 14, the fixing sleeve 15, and the positioning guide tube 16 to move downwards, and the cylindrical sodium-ion battery enters through the positioning guide tube 16. Inside the cell of the sub-battery, the bottom end of the positioning guide tube 16 is inserted into the cell and presses the negative electrode tab. The positioning guide tube 16 presses the negative electrode tab into the bottom of the battery steel shell, so that the negative electrode tab and the battery steel shell are tightly connected. The bottom of the laser welding machine body 4 is equipped with a welding lens. A laser beam is emitted through the welding lens at the bottom. The laser beam passes through the positioning guide tube 16 and hits the negative electrode tab to weld it. When the negative electrode tab is welded, the laser welding machine body 4 stops emitting the laser beam. At this time, the output end of the first cylinder 11 drives the sliding inner plate 13, the second support side frame 14, the fixed sleeve 15 and the positioning guide tube 16 to reset upward. The positioning guide tube 16 leaves the cell of the current cylindrical sodium-ion battery. The moving slide of the linear module 8 drives the positioning frame 6, the positioning groove 7 and the cylindrical sodium-ion battery to move and adjust, and completes the welding work inside the cells of the cylindrical sodium-ion batteries in each positioning groove 7.

[0027] Please see Figure 1 and Figure 3 It also includes a fixed base box 17, which is fixedly connected to the bottom of the support base 1. A rotating rod 20 is rotatably installed inside the fixed base box 17. The rotating rod 20 is rotatably connected to the support base 1. The top end of the rotating rod 20 is fixedly connected to the rotating top plate 2. A gear 21 is fixedly connected to the outside of the rotating rod 20. A movable rack 19 is slidably installed inside the fixed base box 17. The movable rack 19 is meshed with the gear 21. A second cylinder 18 is installed on one side of the fixed base box 17. The output end of the second cylinder 18 is fixedly connected to the movable rack 19.

[0028] It is understood that the output end of the second cylinder 18 of this utility model drives the moving rack 19 to move. When the moving rack 19 moves, it drives the meshing gear 21 to rotate. When the gear 21 rotates, it drives the inner rotating rod 20 to rotate. The moving rack 19 drives the gear 21 to rotate 180 degrees, rotating the rotating rod 20 and the rotating top plate 2 180 degrees, and exchanging the positions of the two positioning frames 6, which facilitates the laser welding and loading of the battery in the positioning groove 7.

[0029] Please see Figure 1 and Figure 3 It also includes a support frame 3, which is located on one side of the support base 1. Inside the support frame 3, a laser welding machine body 4 that cooperates with the positioning guide tube 16 is installed. A welding lens is provided at the bottom of the laser welding machine body 4.

[0030] It is understood that the laser welding machine body 4 of this utility model is also known as a laser welder or laser welding machine. It is a machine used for laser welding of materials. It uses high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, melting the material to form a specific molten pool to achieve the purpose of welding. The bottom of the laser welding machine body 4 is equipped with a welding lens. In laser welding, the welding lens is responsible for collimating and focusing the beam transmitted by the laser fiber cable to obtain the required spot and corresponding power density. The fiber laser welding lens is usually composed of a collimating lens group, a focusing lens group, and an imaging lens group. After the laser is incident, it is collimated by the collimating lens group and then focused to the working plane by the focusing lens group. The working plane of the fiber laser welding lens is imaged onto the imaging plane by the focusing lens group and the imaging lens group, and then received by the camera.

[0031] Please see Figure 1 and Figure 3 A cylinder 11 is installed on the top of the fixed bracket 10. The output end of the cylinder 11 is fixedly connected to the sliding inner plate 13. A limit slide rod 12 is symmetrically fixed to the top of the sliding inner plate 13. The limit slide rod 12 is slidably connected to the fixed bracket 10.

[0032] It is understood that this utility model uses the output end of the first cylinder 11 to drive the sliding inner plate 13 to adjust the height position inside the fixed bracket 10, thereby adjusting the height position of the second support side frame 14, the fixed sleeve 15 and the positioning guide tube 16.

[0033] Please see Figure 1 and Figure 3 The fixed top box 5 is equipped with a linear module 8, and the movable slide of the linear module 8 is connected to the mounting slide plate 22.

[0034] It is understood that this utility model uses the moving slide of the linear module 8 to move and adjust the mounting slide 22. When the mounting slide 22 moves, it moves the positioning frame 6 and positioning groove 7 installed on the top to adjust the welding.

[0035] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 a limitation on the present invention.

[0036] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for a cylindrical sodium-ion battery, characterized in that, include: Support base (1); Rotate the top plate (2), and the top plate (2) is rotated and set on the top of the support base (1); Fixed top box (5), the fixed top box (5) is symmetrically arranged on the top of the rotating top plate (2); Install the sliding plate (22), which is slidably set on top of the fixed top box (5); The positioning frame (6) is bolted to the top of the mounting plate (22), and the top of the positioning frame (6) is provided with multiple positioning slots (7) at equal intervals; The first support side frame (9) is set on one side of the support base (1); Fixed bracket (10) is set on top of the first support side frame (9); The sliding inner plate (13) is slidably disposed on the inner side of the fixed bracket (10); Second support side frame (14) is set on one side of the sliding inner plate (13), and a fixing sleeve (15) is fixedly connected to one side of the second support side frame (14). Positioning conduit (16) is located inside the fixing sleeve (15).

2. The laser welding device for a cylindrical sodium-ion battery according to claim 1, characterized in that: It also includes a fixed base box (17), which is fixedly connected to the bottom of the support base (1). A rotating rod (20) is rotatably arranged inside the fixed base box (17). The rotating rod (20) is rotatably connected to the support base (1). The top end of the rotating rod (20) is fixedly connected to the rotating top plate (2). A gear (21) is fixedly connected to the outside of the rotating rod (20). A movable rack (19) is slidably arranged inside the fixed base box (17). The movable rack (19) is meshed with the gear (21). A second cylinder (18) is installed on one side of the fixed base box (17). The output end of the second cylinder (18) is fixedly connected to the movable rack (19).

3. The laser welding device for a cylindrical sodium-ion battery according to claim 1, characterized in that: It also includes a support frame (3), which is set on one side of the support base (1). The support frame (3) is equipped with a laser welding machine body (4) that cooperates with the positioning guide tube (16). The bottom of the laser welding machine body (4) is provided with a welding lens.

4. The laser welding device for a cylindrical sodium-ion battery according to claim 1, characterized in that: A cylinder (11) is installed on the top of the fixed bracket (10). The output end of the cylinder (11) is fixedly connected to the sliding inner plate (13). A limiting slide rod (12) is symmetrically fixed to the top of the sliding inner plate (13). The limiting slide rod (12) is slidably connected to the fixed bracket (10).

5. The laser welding device for a cylindrical sodium-ion battery according to claim 1, characterized in that: The fixed top box (5) is equipped with a linear module (8), and the movable slide of the linear module (8) is connected to the mounting slide (22).

Images