Sodium ion battery cap welding device

Abstract

The utility model discloses a sodium ion battery cap welding device, which relates to the technical field of laser welding and comprises a workbench, two sliding rods are fixedly connected to two sides of the axis of the top end of the workbench, a first tray is slidably connected to the outer walls of the sliding rods, and the axis of the first tray corresponds to the axis of the workbench. A plurality of battery fixing pieces are fixedly installed at the positions, close to the edge, of the top of the first tray at equal intervals, a cantilever is fixedly connected to one end of the top of the workbench, and a second tray is fixedly connected to the bottom of the tail end of the cantilever; a plurality of battery welding assemblies corresponding to the battery fixing pieces are fixedly connected to the positions, close to the edge, of the bottom of the second tray at equal intervals. According to the technical scheme provided by the utility model, the laser welding technology is matched with the balls, so that the laser welding head can rotate around the sodium ion battery cap at a constant speed, the cap can be uniformly welded on the battery, and the defective product occurrence probability that the cap falls off due to single-point welding or non-uniform welding is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to a welding device for a sodium-ion battery cap. Background Technique

[0002] With the development of the times, the development of new energy is also constantly evolving, and the development of batteries is also continuously progressing. Sodium-ion batteries have higher energy efficiency and can be charged more times in a cycle. Therefore, the demand for sodium-ion batteries is constantly expanding.

[0003] In the process of producing sodium-ion batteries, it is necessary to weld the cap to the battery. In the traditional welding technology, the cap is not accurately positioned or the cap falls off during the welding process, resulting in the failure of the welding work. Moreover, the traditional welding technology has low work efficiency and is prone to defective products such as single-point welding or uneven welding leading to the cap falling off. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a welding device for a sodium-ion battery cap to solve the problems of inaccurate positioning during the welding process of the prior art, which causes the cap to shift, and the cap falling off caused by single-point welding or uneven welding.

[0005] In view of this, the utility model provides a welding device for a sodium-ion battery cap, including a workbench. Two sliding rods are fixedly connected to both sides of the axis at the top of the workbench. A first tray is slidably connected to the outer wall of the sliding rod, and the axis of the first tray corresponds to the axis of the workbench. A number of battery fixing fixtures are fixedly installed at equal intervals near the edge of the top of the first tray. One end of the top of the workbench is fixedly connected to a cantilever, and the bottom of the end of the cantilever is fixedly connected to a second tray. A number of battery welding components corresponding to the battery fixing fixtures are fixedly connected at equal intervals near the edge of the bottom of the second tray;

[0006] The battery welding component includes a motor box. A first motor is fixedly installed at the axis of the motor box. A welding chamber is fixedly installed at the output end of the first motor. Laser welding heads are installed on both sides of the inner wall of the welding chamber. A cap positioning chamber is fixedly connected to the axis at the bottom of the welding chamber. A number of balls are arranged in the outer groove of the cap positioning chamber.

[0007] Optionally, the battery fixing component includes a fixing cylinder, a spring, a sliding cylinder, a positioning rod and a movable groove.

[0008] Optionally, the inner cylinder diameter of the battery fixing component and the battery welding component is 10.1±0.2 mm. The overall height of the battery fixing component before compression is 45±0.5 mm, and the overall height after compression is 40±0.5 mm.

[0009] Optionally, both ends of the spring are fixedly connected to the upper part of the fixed cylinder and the lower part of the sliding cylinder respectively. A positioning rod is fixedly connected to the lower part of the sliding cylinder. The moving groove is formed at the top end of the fixed cylinder, and the positioning rod is slidably sleeved in the moving groove.

[0010] Optionally, a motor bracket is fixedly connected to the bottom of the workbench. Two servo motors are symmetrically and fixedly installed above the motor bracket, and a transmission gear is fixedly installed at the output end of the servo motor.

[0011] Optionally, a lifting rod is fixedly connected to the center of the bottom of the first tray, and transmission racks are fixedly connected to both sides of the lifting rod.

[0012] Optionally, the two transmission racks are respectively meshed and connected to the inner sides of the two transmission gears.

[0013] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0014] 1. For a sodium-ion battery cap welding device of the present invention, by using laser welding technology in cooperation with ball bearings, the laser welding head can rotate uniformly around the sodium-ion battery cap, enabling the cap to be evenly welded onto the battery, and reducing the defective rate of cap detachment caused by single-point welding or uneven welding.

[0015] 2. For a sodium-ion battery cap welding device of the present invention, by adopting the design of connecting the sliding cylinder and the cap positioning bin through a spring, the sliding cylinder enables the battery and the cap to be placed in the battery fixing assembly before welding, preventing cap detachment and welding failure during welding. The cap positioning bin determines the position of the cap and fixes the cap during welding to prevent deviation and uneven welding.

[0016] These characteristics and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present invention with reference to the drawings:

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a front sectional structural diagram of the present invention;

[0020] Figure 3 is a side view structural diagram of the present invention;

[0021] Figure 4 is a schematic structural diagram of the battery fixing assembly of the present invention;

[0022] Figure 5Schematic structural diagram of the battery welding assembly of the present utility model;

[0023] Figure 6 Schematic structural diagram of the lifting structure of the present utility model.

[0024] Explanation of reference numerals in the drawings: 1, workbench; 2, slide bar; 3, first tray; 4, battery fixing assembly; 401, fixing cylinder; 402, spring; 403, sliding cylinder; 404, positioning rod; 405, moving groove; 5, cantilever; 6, second tray; 7, battery welding assembly; 701, motor box; 702, first motor; 703, welding chamber; 704, laser welding head; 705, cap positioning chamber; 706, ball. Specific implementation manners

[0025] The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0026] A sodium ion battery cap welding device according to an embodiment of the present utility model will be specifically described below with reference to the drawings.

[0027] Embodiment 1

[0028] For ease of understanding, please refer to Figures 1 to 6 , an embodiment of a sodium ion battery cap welding device provided by the present utility model, including a workbench 1, two slide bars 2 are fixedly connected to both sides of the axis center at the top end of the workbench 1, a first tray 3 is slidably connected to the outer wall of the slide bar 2, and the axis center of the first tray 3 corresponds to the axis center of the workbench 1. A plurality of battery fixing assemblies 4 are fixedly installed at equal intervals near the edge position at the top of the first tray 3. One end of the top of the workbench 1 is fixedly connected with a cantilever 5, the bottom end of the cantilever 5 is fixedly connected with a second tray 6, and a plurality of battery welding assemblies 7 corresponding to the battery fixing assemblies 4 are fixedly connected at equal intervals near the edge position at the bottom of the second tray 6;

[0029] The battery welding assembly 7 includes a motor box 701, a first motor 702 is fixedly installed at the axis center of the motor box 701, a welding chamber 703 is fixedly installed at the output end of the first motor 702, laser welding heads 704 are installed on both sides of the inner wall of the welding chamber 703, a cap positioning chamber 705 is fixedly connected to the axis center at the bottom of the welding chamber 703, and a plurality of balls 706 are arranged in the outer groove of the cap positioning chamber 705.

[0030] It should be noted that the first tray 3 is used to fixedly install a number of battery fixing components 4, and the second tray 6 is used to fixedly install a number of battery welding components 7. The positions of the battery fixing components 4 and the battery welding components 7 correspond one by one. The first tray 3 drives the battery fixing components 4 to lift through the sliding rod 2. The battery and the cap are placed in the battery fixing component 4, so that the battery and the cap enter the battery welding component 7. In the battery welding component 7, the first motor 702 enables the welding chamber 703 to rotate at a constant speed. The laser welding heads 704 fixedly installed on both sides of the inner wall of the welding chamber 703 are used to weld the battery cap. The cap positioning chamber 705 fixedly connected to the bottom center of the welding chamber 703 enables the battery and the cap to be in the correct position when entering the welding chamber 703 and prevents the cap from shifting during the welding process. A number of balls 706 are arranged in the outer groove of the cap positioning chamber 705. The balls 706 press the cap to closely adhere to the battery and prevent the battery and the cap from rotating when the welding chamber 703 rotates.

[0031] In some embodiments, as Figure 4 shown, the battery fixing component 4 includes a fixing cylinder 401, a spring 402, a sliding cylinder 403, a positioning rod 404, and an activity groove 405. The two ends of the spring 402 are respectively fixedly connected above the fixing cylinder 401 and below the sliding cylinder 403. A positioning rod 404 is fixedly connected below the sliding cylinder 403. The activity groove 405 is opened at the top end of the fixing cylinder 401. The positioning rod 404 is slidably sleeved in the activity groove 405. The inner cylinder diameters of the battery fixing component 4 and the battery welding component 7 are 10.1 ± 0.2 mm. The overall height of the battery fixing component 4 before compression is 45 ± 0.5 mm, and the overall height after compression is 40 ± 0.5 mm.

[0032] It should be noted that the battery fixing component 4 is used to place the battery and the cap, and the battery and the cap are placed in the battery fixing component 4. The fixing cylinder 401 and the sliding cylinder 403 are connected by a spring 402. When the battery fixing component 4 rises and contacts the battery welding component 7 together, the sliding cylinder 403 descends so that the battery and the cap can enter the battery welding component 7 to avoid affecting the cap welding process. The positioning rod 404 fixedly connected below the sliding cylinder 403 is slidably sleeved in the activity groove 405 to prevent the sliding cylinder 403 from shifting when lifting and lowering. The inner cylinder diameters of the battery fixing component 4 and the battery welding component 7 are the same as the dimensions of the battery to be welded. The overall height of the battery fixing component 4 is slightly higher than the dimensions of the battery to be welded. This design enables the battery to be completely placed in the battery fixing component 4 without moving or shifting and ensures that the cap will not be lost.

[0033] In some embodiments, as Figure 2As shown, a motor bracket 8 is fixedly connected to the bottom of the workbench 1. Above the motor bracket 8, two servo motors 9 are symmetrically and fixedly installed. A transmission gear 10 is fixedly installed at the output end of the servo motor 9. A lifting rod 11 is rotatably connected to the center of the bottom of the first tray 3. Transmission racks 12 are fixedly connected to both sides of the lifting rod 11. The two transmission racks 12 are respectively meshed and connected to the inner sides of the two transmission gears 10.

[0034] It should be noted that the two servo motors 9 installed above the motor bracket 8 provide the power to control the rising and falling of the lifting rod 11, and when the lifting rod 11 reaches the specified height, it is fixed at that height to facilitate the battery welding work. The transmission gear 10 fixedly installed at the output end of the servo motor 9 acts on the transmission rack 12 with the power provided by the servo motor 9. The transmission rack 12 drives the rising or falling of the lifting rod 11 following the rotation of the transmission gear 10. The rising and falling process of the lifting rod 11 drives the rising and falling of the first tray 3, enabling it to rise or fall to the specified height.

[0035] In the present utility model, the laser welding head 704 is a well-known component, and the laser welding machine connected to the laser welding head 704 provides welding support, which will not be elaborated here.

[0036] Working principle: When welding the battery cap, place the battery and the cap in the battery fixing assembly 4. Rotate the transmission gear 10 through the servo motor 9. When the transmission gear 10 rotates, the lifting rod 11 is lifted or lowered through the transmission rack 12. The lifting rod 11 causes the first tray 3 to rise and fall together. After the first tray 3 reaches the specified height, the servo motor 9 stops driving the transmission gear 10, and the lifting rod 11 and the first tray 3 are fixed at the specified height to start the welding work. When the battery fixing assembly 4 rises and contacts the battery welding assembly 7, the sliding cylinder 403 is squeezed, and it starts to descend under the action of the spring 402 and the positioning rod 404, so that the battery and the cap enter the welding chamber 703 and the cap enters the cap positioning chamber 705, preventing the cap from falling off or shifting during the welding work. When the cap enters the cap positioning chamber 705, the ball 706 presses against the edge of the cap to make it closely adhere to the battery and prevent the battery and the cap from rotating while the welding chamber 703 rotates. After the battery and the cap are positioned, the first motor 702 is started to rotate the welding chamber 703, and the laser welding head 704 rotates accordingly, enabling the laser welding head 704 to rotate uniformly around the sodium-ion battery cap, so that the cap can be evenly welded to the battery, reducing the probability of defective products caused by single-point welding or uneven welding resulting in cap detachment.

[0037] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sodium ion battery cap welding device, characterized in that: The workbench (1) comprises two slide bars (2) fixedly connected to both sides of the axis of the top of the workbench (1); a first tray (3) is slidably connected to the outer wall of the slide bar (2); the axis of the first tray (3) corresponds to the axis of the workbench (1); a plurality of battery fixing assemblies (4) are fixedly installed at equal intervals near the edge of the top of the first tray (3); a cantilever (5) is fixedly connected to one end of the top of the workbench (1); a second tray (6) is fixedly connected to the bottom of the end of the cantilever (5); a plurality of battery welding assemblies (7) corresponding to the battery fixing assemblies (4) are fixedly connected at equal intervals near the edge of the bottom of the second tray (6); The battery welding assembly (7) comprises a motor box (701), a No. 1 motor (702) is fixedly mounted at the axis of the motor box (701), a welding bin (703) is fixedly mounted at the output end of the No. 1 motor (702), laser welding heads (704) are mounted on both sides of the inner wall of the welding bin (703), a cap positioning bin (705) is fixedly connected at the axis of the bottom of the welding bin (703), and a plurality of balls (706) are arranged in the outer ring groove of the cap positioning bin (705).

2. A sodium ion battery cap welding device according to claim 1, characterized in that: The battery fixing assembly (4) comprises a fixing cylinder (401), a spring (402), a sliding cylinder (403), a positioning rod (404) and a movable groove (405).

3. A sodium ion battery cap welding device according to claim 2, characterized in that: The two ends of the spring (402) are respectively fixedly connected to the top of the fixed cylinder (401) and the bottom of the sliding cylinder (403); a positioning rod (404) is fixedly connected to the bottom of the sliding cylinder (403); the movable groove (405) is opened at the top of the fixed cylinder (401); and the positioning rod (404) is slidably sleeved in the movable groove (405).

4. A sodium ion battery cap welding device according to claim 3, characterized in that: The inner cylinder diameter of the battery fixing assembly (4) and the battery welding assembly (7) is 10.1±0.2 mm, and the overall height of the battery fixing assembly (4) before compression is 45±0.5 mm, and the overall height after compression is 40±0.5 mm.

5. A sodium ion battery cap welding device according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected to a motor bracket (8), two servo motors (9) are symmetrically fixedly installed above the motor bracket (8), and a transmission gear (10) is fixedly installed at the output end of the servo motor (9).

6. A sodium ion battery cap welding device according to claim 5, characterized in that: A lifting rod (11) is fixedly connected to the axis center of the bottom of the No. 1 tray (3), and transmission racks (12) are fixedly connected to both sides of the lifting rod (11).

7. A sodium ion battery cap welding device according to claim 6, characterized in that: The two transmission racks (12) are respectively meshed and connected to the inner sides of the two transmission gears (10).

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