Carbon rod coating device for battery production

Abstract

The utility model discloses a carbon rod cladding device for battery production, including groove body, the suspended fixed baffle in the groove body, the top surface rotation connection of baffle stirs, the outside fixed connection frame of groove body, the bottom elevating connection of frame second hollow block, the top wall symmetry fixed two air cylinders of frame, and the piston rod end of two air cylinders is fixed in the top surface of second hollow block, and the rotation connection drive part in second hollow block, the bottom surface of second hollow block is connected with first hollow block, and the both sides symmetry of first hollow block are connected with two fixed parts, and the bottom surface rotation connection of first hollow block clamping part, and clamping part is connected with drive part, and the outside of groove body is equipped with liquid level line. The utility model discloses through clamping part drive carbon rod in the slurry uniform speed rotation, and the centrifugal force of carbon rod rotation will try to pour down the extra slurry and throw out, thereby effectively inhibiting the formation of " tear drop " effect, and the centrifugal force forces the slurry even distribution on the surface of carbon rod simultaneously, and forms a thickness consistent annular liquid film.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to a carbon rod coating device for battery production. Background Technology

[0002] In the manufacturing process of dry cell batteries (such as zinc-manganese dry cell batteries), carbon rods serve as the positive electrode current collector and conductive framework. Their performance and quality directly affect the battery's discharge capacity, internal resistance, lifespan, and safety. Carbon rods are typically made from materials such as graphite powder and coke powder through mixing, extrusion, and calcination. They possess good conductivity but are porous and brittle.

[0003] Before being installed in a battery, a traditional carbon rod needs to be coated with a specific mixture (often called a "coating layer" or "cell layer"). This mixture typically consists of manganese dioxide, acetylene black, graphite powder, electrolyte, and other components. This coating material is an important component of the battery's positive electrode active material, and its tightness of contact with the carbon rod, coating uniformity, thickness consistency, and adhesion strength have a decisive impact on the battery's electrochemical performance.

[0004] Currently, the industry standard for coating carbon rods involves immersing the formed carbon rod in a pre-mixed positive electrode slurry, then lifting it up. The slurry adheres to the surface of the carbon rod, forming a coating layer. After drying and curing, the coating layer tends to be thinner at the top and thicker at the bottom due to gravity. Slurry tends to accumulate at the bottom of the carbon rod ("teardrop" effect), resulting in uneven coating thickness. This can cause uneven current distribution inside the battery and affect overall performance. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a carbon rod coating device for battery production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a carbon rod coating device for battery production, comprising a tank, a suspended partition plate fixed inside the tank, a stirring component rotatably connected to the top surface of the partition plate, a frame fixedly connected to the outside of the tank, a second hollow block being lifted and lowered at the bottom of the frame, two cylinders symmetrically fixed to the top wall of the frame, the piston rod ends of the two cylinders being fixed to the top surface of the second hollow block, a driving component rotatably connected inside the second hollow block, a first hollow block being snapped into the bottom surface of the second hollow block, two fixing components symmetrically snapped into the sides of the first hollow block, a clamping component rotatably connected to the bottom surface of the first hollow block, the clamping component being snapped into the driving component, and a liquid level line being provided on the outside of the tank.

[0007] As a further description of the above technical solution: the stirring component includes a second drive motor fixedly connected to the center of the tank bottom plate, the output end of the second drive motor being drivenly connected to a rotating shaft, the top surface of the rotating shaft being fixedly connected to a second drive gear, the top surface of the second drive gear being fixedly connected to a second drive shaft, the second drive shaft rotating through the bottom surface of the partition, the outer edge of the second drive gear meshing with a plurality of second driven gears equidistantly distributed circumferentially, the center of the second driven gear being fixedly connected to a second driven shaft, the second driven shaft rotating through the bottom surface of the partition, and the outer edges of the second driven shaft and the second drive shaft being fixedly connected to a plurality of stirring rods equidistantly distributed circumferentially.

[0008] As a further description of the above technical solution: the fixing component includes an arc-shaped plate slidably connected to the side of the first hollow block, a handle fixedly connected to the outside of the arc-shaped plate, a first blind hole opened on the side of the first hollow block, a first guide rod slidably connected in the first blind hole, the first guide rod being fixedly connected to the arc-shaped plate, a positioning groove opened on the side of the second hollow block, a positioning block inserted into the positioning groove, and the positioning block being fixedly connected to the arc-shaped plate.

[0009] As a further description of the above technical solution: two first sliding grooves are symmetrically formed in the first blind hole, a first slider is slidably connected in the first sliding groove, the first slider is fixedly connected to the first guide rod, and a first spring is fixed between the inner wall of the first sliding groove and the first slider.

[0010] As a further description of the above technical solution: the driving component includes a first driving motor vertically fixed at the center of the top surface of the second hollow block. The output end of the first driving motor is connected to a first drive shaft. The first drive shaft is rotatably connected inside the second hollow block. A first drive gear is provided inside the second hollow block. The first drive gear is fixedly sleeved on the outer edge of the first drive shaft. The outer edge of the first drive gear meshes with a plurality of first driven gears equidistantly distributed circumferentially. The center of the first driven gear is fixedly connected to a first driven shaft. The top surface of the first driven shaft is rotatably connected to the top wall of the second hollow block, and the bottom end rotatably penetrates the bottom surface of the second hollow block. The first driven shaft is engaged with the clamping component.

[0011] As a further description of the above technical solution: the clamping member includes multiple hollow shafts that rotatably pass through the first hollow block. A cross groove is formed on the top surface of the hollow shaft, and a cross block is inserted into the cross groove. The cross block is fixed to the bottom surface of the first driven shaft. Multiple third air holes are formed on the side surface of the hollow shaft. Multiple cylinders are rotatably connected to the bottom surface of the first hollow block. The cylinders are fixedly connected to the bottom surface of the hollow shaft. A second air hole passes through the bottom surface of the hollow shaft. A first air hole communicating with the second air hole passes through the top wall of the cylinder. An annular airbag is fixedly connected inside the cylinder. An air pipe is fixedly connected to the top surface of the first hollow block. A sealing cap is threaded to the end of the air pipe. A sealing element is provided inside the air pipe. A groove is formed on the bottom surface of the second hollow block, and the air pipe is located in the groove.

[0012] As a further description of the above technical solution: the sealing element includes a support ring fixed inside the trachea. Two second blind holes are symmetrically opened on the top surface of the support ring. Two second sliding grooves are symmetrically opened in the second blind holes. A second slider is slidably connected in the second sliding groove. A second spring is fixed between the second slider and the second sliding groove. A second guide rod is fixed between the two second sliders. The second guide rod is slidably connected in the second blind hole. A sealing plate is fixed on the top surface of the two second guide rods. A handle is fixedly connected to the top surface of the sealing plate. The handle abuts against the top wall of the sealing cover.

[0013] This utility model has the following beneficial effects: 1. Compared with existing technologies, the carbon rod coating device for battery production uses a clamping component to drive the carbon rod to rotate at a constant speed in the slurry. The centrifugal force generated by the rotation of the carbon rod will throw out the excess slurry that tries to flow downward, thereby effectively suppressing the formation of the "teardrop" effect. At the same time, the centrifugal force forces the slurry to be evenly distributed on the surface of the carbon rod, forming an annular liquid film of uniform thickness. The slurry, which is a "shear-thinning" fluid (thixotropic fluid), will temporarily reduce its viscosity under the shear force brought by the rotation of the carbon rod, making it easier to level. After the shear force disappears (rotation stops), the viscosity recovers, which is beneficial for fixing the shape.

[0014] 2. Compared with existing technologies, the carbon rod coating device for battery production has a built-in multi-axis stirring system that can continuously and evenly stir the positive electrode slurry in the tank, preventing the sedimentation of solid particles such as manganese dioxide and acetylene black, and maintaining the uniformity of slurry composition and viscosity. The unique annular airbag clamping design tightens and fixes the carbon rod from the inside by inflating and expanding it. It is suitable for carbon rods of different diameters, has strong versatility, and the clamping force is uniform and gentle, avoiding surface damage or cracking of brittle carbon rods that may be caused by rigid clamping, thus ensuring production safety. Attached Figure Description

[0015] Figure 1This is a perspective view of the overall structure of a carbon rod coating device for battery production proposed in this utility model; Figure 2 This is a front view of the overall structure of a carbon rod coating device for battery production proposed in this utility model; Figure 3 This is a main sectional view of the connection between the arc plate and the first hollow block of a carbon rod coating device for battery production proposed in this utility model; Figure 4 This is a main sectional view showing the connection between the first hollow block and the second hollow block of a carbon rod coating device for battery production proposed in this utility model. Figure 5 This is a main sectional view of the bottom structure of the tank of a carbon rod coating device for battery production proposed in this utility model; Figure 6 This utility model proposes a carbon rod coating device for battery production. Figure 4 Enlarged view of the structure at point A in the middle; Figure 7 This utility model proposes a carbon rod coating device for battery production. Figure 4 Enlarged view of the structure at point B.

[0016] Legend: 1. Tank; 2. Liquid level line; 3. First hollow block; 4. Second hollow block; 5. Frame; 6. Cylinder; 7. First drive motor; 8. Handle; 9. Arc plate; 10. Cylinder; 11. Positioning groove; 12. Positioning block; 13. Blind hole; 14. First guide rod; 15. First driven gear; 16. First driven shaft; 17. First drive gear; 18. First drive shaft; 19. Hollow shaft; 20. Annular airbag; 21. Second drive motor; 22. Rotating shaft; 23. Second drive gear; 24. Second driven gear; 25. Second driven shaft; 26. Stirring rod; 27. Second drive shaft; 28. Partition plate; 29. ​​First air hole; 30. Second air hole; 31. Third air hole; 32. Cross groove; 33. Cross block; 34. Groove; 35. Sealing cap; 36. Handle; 37. Support ring; 38. Air pipe; 39. Sealing plate. Detailed Implementation

[0017] 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.

[0018] Reference Figures 1 to 7This utility model provides a carbon rod coating device for battery production: including a tank 1, a suspended partition 28 inside the tank 1, a stirring component rotatably connected to the top surface of the partition 28, a frame 5 fixedly connected to the outside of the tank 1, a second hollow block 4 lifted and lowered at the bottom of the frame 5, two cylinders 6 symmetrically fixed to the top wall of the frame 5, the piston rod ends of the two cylinders 6 fixed to the top surface of the second hollow block 4, a driving component rotatably connected inside the second hollow block 4, a first hollow block 3 snapped into the bottom surface of the second hollow block 4, two fixing components symmetrically snapped into the two sides of the first hollow block 3, a clamping component rotatably connected to the bottom surface of the first hollow block 3, the clamping component snapped into the driving component, and a liquid level line 2 provided outside the tank 1; The fasteners include an arc-shaped plate 9 slidably connected to the side of the first hollow block 3, a handle 8 fixedly connected to the outside of the arc-shaped plate 9, a first blind hole 13 opened on the side of the first hollow block 3, a first guide rod 14 slidably connected in the first blind hole 13, the first guide rod 14 fixedly connected to the arc-shaped plate 9, a positioning groove 11 opened on the side of the second hollow block 4, a positioning block 12 inserted into the positioning groove 11, the positioning block 12 fixedly connected to the arc-shaped plate 9, two first sliding grooves symmetrically opened in the first blind hole 13, a first slider slidably connected in the first sliding groove, the first slider fixedly connected to the first guide rod 14, and a first spring fixedly fixed between the inner wall of the first sliding groove and the first slider. The driving component includes a first drive motor 7 vertically fixed to the center of the top surface of the second hollow block 4. The output end of the first drive motor 7 is connected to a first drive shaft 18. The first drive shaft 18 is rotatably connected inside the second hollow block 4. A first drive gear 17 is provided inside the second hollow block 4. The first drive gear 17 is fixedly sleeved on the outer edge of the first drive shaft 18. The outer edge of the first drive gear 17 meshes with a plurality of first driven gears 15 equidistantly distributed along the circumference. The center of the first driven gear 15 is fixedly connected to a first driven shaft 16. The top surface of the first driven shaft 16 is rotatably connected to the top wall of the second hollow block 4, and the bottom end rotatably penetrates the bottom surface of the second hollow block 4. The first driven shaft 16 is engaged with a clamping component. The clamping component includes multiple hollow shafts 19 that rotatably pass through the first hollow block 3. A cross groove 32 is opened on the top surface of the hollow shaft 19, and a cross block 33 is inserted into the cross groove 32. The cross block 33 is fixed to the bottom surface of the first driven shaft 16. Multiple third air holes 31 are opened on the side of the hollow shaft 19. Multiple cylinders 10 are rotatably connected to the bottom surface of the first hollow block 3. The cylinders 10 are fixedly connected to the bottom surface of the hollow shaft 19. The bottom surface of the hollow shaft 19 passes through a second air hole 30. The top wall of the cylinder 10 passes through a first air hole 29 that communicates with the second air hole 30. An annular airbag 20 is fixedly connected inside the cylinder 10. An air pipe 38 is fixedly connected to the top surface of the first hollow block 3. A sealing cap 35 is threaded to the end of the air pipe 38. A sealing element is provided inside the air pipe 38. A groove 34 is opened on the bottom surface of the second hollow block 4, and the air pipe 38 is located in the groove 34. The sealing element includes a support ring 37 fixed inside the air tube 38. Two second blind holes are symmetrically opened on the top surface of the support ring 37. Two second sliding grooves are symmetrically opened in the second blind holes. A second slider is slidably connected in the second sliding groove. A second spring is fixed between the second slider and the second sliding groove. A second guide rod is fixed between the two second sliders. The second guide rod is slidably connected in the second blind hole. A sealing plate 39 is fixed on the top surface of the two second guide rods. A handle 36 is fixedly connected to the top surface of the sealing plate 39. The handle 36 abuts against the top wall of the sealing cover 35. The stirring component includes a second drive motor 21 fixedly connected to the center of the bottom plate of the tank 1. The output end of the second drive motor 21 is connected to a rotating shaft 22. The top surface of the rotating shaft 22 is fixedly connected to a second drive gear 23. The top surface of the second drive gear 23 is fixedly connected to a second drive shaft 27. The second drive shaft 27 rotates through the bottom surface of the partition 28. The outer edge of the second drive gear 23 meshes with a plurality of second driven gears 24 distributed equidistantly along the circumferential direction. The center of the second driven gear 24 is fixedly connected to a second driven shaft 25. The second driven shaft 25 rotates through the bottom surface of the partition 28. The outer edges of the second driven shaft 25 and the second drive shaft 27 are fixedly connected to a plurality of stirring rods 26 distributed equidistantly along the circumferential direction.

[0019] Working principle: In use, the slurry is put into the tank 1. Then, the second drive motor 21 drives the stirring rod 26 to rotate and stir the slurry through the second drive gear 23 and the second driven gear 24 to prevent the slurry from settling in the tank 1. Next, the carbon rod to be coated is installed into the cylinder 10. The elastic annular air bag 20 clamps and positions the carbon rod. Then, the sealing cover 35 is removed, and the air extraction device is connected to the air pipe 38. The air extraction device extracts the gas from the first hollow block 3. During the extraction, the sealing plate 39 rises under the suction of the air extraction device, so that the air pipe 38 is in a connected state. At the same time, the second spring is compressed, and the air between the carbon rod and the cylinder 10 is released. The pressure, through the first air hole 29, the second air hole 30, the third air hole 31, and the hollow shaft 19, is extracted by the suction device, and the carbon rod is adsorbed and fixed inside the cylinder 10 by negative pressure. However, after the suction is completed, the suction device is turned off, and after the suction in the air pipe 38 disappears, the second spring of the entire compression system returns to its original position, causing the sealing plate 39 to descend and seal the air pipe 38. Then, the sealing cover 35 is connected to the air pipe 38. Next, by pulling the arc plate 9 outward by the handle 8, the two arc plates 9 move in opposite directions, while the first spring is compressed. Then, the first hollow block 3 passes through the cross groove 32 on the top surface of the hollow shaft 19 and connects with the cross block 33 at the end of the first driven shaft 16 inside the second hollow block 4. Align and engage, then release handle 8, compressing the first spring to reset, allowing positioning block 12 to insert into positioning groove 11, completing the fixation between the first hollow block 3 and the second hollow block 4. Next, the first drive motor 7 drives the first driven shaft 16 to rotate via the first driving gear 17 and the first driven gear 15. The first driven shaft 16 drives the hollow shaft 19 to rotate, which in turn drives the cylinder 10 and the carbon rods inside to rotate. Then, cylinder 6 lowers the rotating carbon rods, immersing them in the slurry within the tank 1. Then, cylinder 6 raises the rotating carbon rods from the slurry; the centrifugal force generated by the rotating carbon rods will lift them from the slurry. Excess slurry is thrown out, effectively suppressing the formation of the "teardrop" effect. Centrifugal force forces the slurry to be evenly distributed on the surface of the carbon rod, forming a ring-shaped liquid film of uniform thickness. The slurry, which is a "shear-thinning" fluid (thixotropic fluid), will temporarily reduce its viscosity due to the shear force brought by the rotation of the carbon rod, making it easier to level. Then, the first drive motor 7 is turned off, and the carbon rod stops rotating. Next, the arc-shaped block is pulled outward by the handle 8, so that the positioning block 12 leaves the positioning groove 11. Then, the first hollow block 3 is removed from the bottom surface of the second hollow block 4. The first hollow block 3 containing the carbon rod covered with slurry is sent to the drying equipment to heat and dry the slurry on the outside of the carbon rod.

[0020] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A carbon rod coating device for battery production, comprising a tank (1), characterized in that: The tank (1) has a suspended partition (28) inside. The top surface of the partition (28) is rotatably connected to a stirring component. The tank (1) is fixedly connected to a frame (5) on the outside. The bottom of the frame (5) is connected to a second hollow block (4) in a lifting manner. Two cylinders (6) are symmetrically fixed to the top wall of the frame (5). The piston rod ends of the two cylinders (6) are fixed to the top surface of the second hollow block (4). The second hollow block (4) is rotatably connected to a driving component. The bottom surface of the second hollow block (4) is clamped to a first hollow block (3). Two fixing components are symmetrically clamped to both sides of the first hollow block (3). The bottom surface of the first hollow block (3) is rotatably connected to a clamping component. The clamping component is clamped to the driving component. The tank (1) has a liquid level line (2) on the outside.

2. The carbon rod coating device for battery production according to claim 1, characterized in that: The stirring component includes a second drive motor (21) fixedly connected to the center of the bottom plate of the tank (1). The output end of the second drive motor (21) is connected to a rotating shaft (22). The top surface of the rotating shaft (22) is fixedly connected to a second drive gear (23). The top surface of the second drive gear (23) is fixedly connected to a second drive shaft (27). The second drive shaft (27) rotates through the bottom surface of the partition (28). The outer edge of the second drive gear (23) meshes with a plurality of second driven gears (24) distributed equidistantly along the circumferential direction. The center of the second driven gear (24) is fixedly connected to a second driven shaft (25). The second driven shaft (25) rotates through the bottom surface of the partition (28). The outer edges of the second driven shaft (25) and the second drive shaft (27) are fixedly connected to a plurality of stirring rods (26) distributed equidistantly along the circumferential direction.

3. The carbon rod coating device for battery production according to claim 1, characterized in that: The fastener includes an arc plate (9) slidably connected to the side of the first hollow block (3), a handle (8) fixedly connected to the outside of the arc plate (9), a first blind hole (13) is opened on the side of the first hollow block (3), a first guide rod (14) is slidably connected in the first blind hole (13), the first guide rod (14) is fixedly connected to the arc plate (9), a positioning groove (11) is opened on the side of the second hollow block (4), a positioning block (12) is inserted into the positioning groove (11), and the positioning block (12) is fixedly connected to the arc plate (9).

4. The carbon rod coating device for battery production according to claim 3, characterized in that: Two first sliding grooves are symmetrically opened in the first blind hole (13). The first slider is slidably connected in the first sliding groove. The first slider is fixedly connected to the first guide rod (14). The inner wall of the first sliding groove and the first slider are fixed together with the first spring.

5. The carbon rod coating device for battery production according to claim 1, characterized in that: The driving component includes a first driving motor (7) vertically fixed at the center of the top surface of the second hollow block (4). The output end of the first driving motor (7) is connected to a first drive shaft (18). The first drive shaft (18) is rotatably connected inside the second hollow block (4). A first drive gear (17) is provided inside the second hollow block (4). The first drive gear (17) is fixedly sleeved on the outer edge of the first drive shaft (18). The outer edge of the first drive gear (17) meshes with a plurality of first driven gears (15) distributed equidistantly along the circumferential direction. The center of the first driven gear (15) is fixedly connected to a first driven shaft (16). The top surface of the first driven shaft (16) is rotatably connected to the top wall of the second hollow block (4), and the bottom end rotatably penetrates the bottom surface of the second hollow block (4). The first driven shaft (16) is engaged with the clamping component.

6. The carbon rod coating device for battery production according to claim 5, characterized in that: The clamping component includes multiple hollow shafts (19) that rotatably pass through the first hollow block (3). A cross groove (32) is formed on the top surface of each hollow shaft (19), and a cross block (33) is inserted into the cross groove (32). The cross block (33) is fixed to the bottom surface of the first driven shaft (16). Multiple third air holes (31) are formed on the side of the hollow shaft (19). Multiple cylinders (10) are rotatably connected to the bottom surface of the first hollow block (3). The cylinders (10) are fixedly connected to the bottom surface of the hollow shaft (19). The bottom surface of the mandrel (19) is penetrated by the second air hole (30), the top wall of the cylinder (10) is penetrated by the first air hole (29) which is connected to the second air hole (30), the cylinder (10) is fixedly connected to the annular air bag (20), the top surface of the first hollow block (3) is fixedly connected to the air pipe (38), the end of the air pipe (38) is threaded to the sealing cap (35), the air pipe (38) is provided with a sealing element, the bottom surface of the second hollow block (4) is provided with a groove (34), and the air pipe (38) is located in the groove (34).

7. A carbon rod coating device for battery production according to claim 6, characterized in that: The sealing element includes a support ring (37) fixed inside the air pipe (38). The top surface of the support ring (37) is symmetrically provided with two second blind holes. Two second sliding grooves are symmetrically provided inside the second blind holes. A second slider is slidably connected inside the second sliding groove. A second spring is fixed between the second slider and the second sliding groove. A second guide rod is fixed between the two second sliders. The second guide rod is slidably connected inside the second blind hole. The top surfaces of the two second guide rods are fixed together with a sealing plate (39). A handle (36) is fixedly connected to the top surface of the sealing plate (39). The handle (36) abuts against the top wall of the sealing cover (35).

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