Battery cell hot-pressing device

Abstract

This invention discloses a battery cell hot pressing device, including a worktable, a guide post fixed to the upper end of the worktable, a mounting plate fixed to the upper end of the guide post, a cylinder fixed to the upper end of the mounting plate, a piston rod of the cylinder fixed to a sliding plate, a lower end of the sliding plate fixed to an upper heating plate, and a lower end of the upper heating plate fixed to an upper pressure plate. A mounting cavity is provided on the worktable below the upper pressure plate, a fixing rod is fixed inside the mounting cavity, and hollow rods are symmetrically fitted around the fixing rods on both sides of a support plate. The hollow rods are driven to rotate by a drive mechanism. A rotating shell is fitted around the fixing rods and fixed to the hollow rods. The upper and lower ends of the rotating shell are open, and a lower pressure plate (first and second) capable of vertical movement is provided at the upper and lower ends of the rotating shell, respectively. The ends of the lower pressure plates near the fixing rods are fixed to the lower heating plate. A receiving plate is provided inside the mounting cavity below the rotating shell. This invention can automatically complete the material discharge, improving work efficiency.

Description

Technical Field

[0001] This invention relates to a battery processing apparatus, specifically a battery cell hot pressing apparatus. Background Technology

[0002] A battery cell refers to a single electrochemical cell containing positive and negative electrodes, and is generally not used directly. The quality of the battery cell directly determines the quality of the rechargeable battery. Battery cells are divided into three types: aluminum-cased cells, pouch cells, and cylindrical cells. Mobile phone batteries typically use aluminum-cased cells, while Bluetooth and other digital products often use pouch cells. Laptop batteries use a series-parallel combination of cylindrical cells.

[0003] During the battery cell assembly process, a certain adhesive force is required to fix the entire cell in place. Currently, the battery cells are generally assembled by hot pressing. However, after hot pressing, the battery cells may stick to the lower platen, thus affecting their output and reducing work efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a battery cell hot pressing device that can automatically complete the unloading process and improve work efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A battery cell hot pressing device includes a worktable with two or more guide pillars fixed to its upper end. A mounting plate is fixed to the upper end of each guide pillar. A cylinder is fixed to the upper end of the mounting plate. The piston rod of the cylinder is fixed to a sliding plate. The lower end of the sliding plate is fixed to an upper heating plate. The lower end of the upper heating plate is fixed to an upper pressure plate. A mounting cavity is provided on the worktable below the upper pressure plate. A fixing rod is fixed inside the mounting cavity. A support plate is fixed to the upper end of the fixing rod via a connecting rod. A shock-absorbing column is fixed to the upper end of the support plate. The upper ends of the shock-absorbing columns are all fixed to the top plate. Hollow rods are symmetrically sleeved on both sides of the support plate outside the fixed rod. The hollow rods are driven to rotate by the drive mechanism. A rotating shell is sleeved on the fixed rod. The rotating shell is fixed to the hollow rod. The upper and lower ends of the rotating shell are open. The upper and lower ends of the rotating shell are respectively provided with a first lower pressure plate and a second lower pressure plate that can move vertically. The ends of the first lower pressure plate and the second lower pressure plate near the fixed rod are respectively fixed to the lower heating plate. A receiving plate is provided inside the mounting cavity and below the rotating shell.

[0007] Preferably, the drive mechanism includes a motor fixed to the upper end of the support plate, the output shaft of the motor being fixed to the drive gear, a driven gear being fixedly disposed on the hollow rod, and the drive gear and the driven gear being meshed and connected.

[0008] Preferably, the inner walls of the rotating shell are symmetrically provided with sliding grooves, and a slider is installed in each of the sliding grooves. The sliders on the same inner wall of the rotating shell are fixed to the sliding plate. The end of the sliding plate away from the slider is fixed to the heat insulation plate. The two ends of the lower pressure plate and the lower pressure plate are respectively fixed with heat insulation plates. The heat insulation plates are fixed by heat insulation rods.

[0009] Preferably, an electromagnetic plate is embedded and fixed at the top of the slide groove, and the slider is made of iron.

[0010] Preferably, annular slide rails are fixed at both ends of the rotating shell, and annular grooves adapted to the annular slide rails are provided on the inner wall of the mounting cavity, with the annular slide rails installed in the annular grooves.

[0011] Preferably, arc-shaped covers are fixed at both ends of the rotating shell.

[0012] Preferably, cylinder 2 and cylinder 3 are fixed to the upper end of the worktable and on both sides of the upper pressure plate, respectively. The piston rod of cylinder 2 is fixed to the push plate. A surrounding plate is symmetrically fixed to the upper end of the worktable and between the push plate and the mounting cavity. The piston rod of cylinder 3 is fixed to the movable plate. Horizontal slide rails are fixed to both sides of cylinder 3. The movable plate is installed on the horizontal slide rails. The movable plate is fixed to the moving plate by a push rod. A vertical slide rail is fixed to the end of the moving plate away from the movable plate. Two sliders 2 are installed on the vertical slide rails. The end of slider 2 away from the moving plate is fixed to the limiting plate.

[0013] Preferably, the distance between the two limiting plates remains constant from both ends of the slider and then gradually increases.

[0014] Preferably, the mounting cavity is provided with mounting grooves on both sides of the receiving plate, and a lead screw and a guide rod are respectively provided in the two mounting grooves. One end of the lead screw is fixed to the output shaft of the second motor, and the other end of the lead screw is connected to the inner wall of the mounting groove through a bearing. Both ends of the guide rod are fixed to the inner wall of the mounting groove. The lead screw and the guide rod pass through the slider three, and the lead screw and the slider three are connected by threads. The receiving plate is composed of a fixed plate and a rotating plate. The rotating plate is hinged to the fixed plate. The slider three are respectively fixed at both ends of the fixed plate. The receiving plate is set at the bottom of the mounting cavity, and a horizontal plate is fixed on the outer wall of the worktable below the mounting cavity.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1) By setting up a rotating shell, the hot-pressed battery cells rotate together with the shell. Under the action of gravity, the battery cells fall onto the receiving plate, thus automatically completing the discharge without the need for staff intervention.

[0017] 2) By setting a limit plate, it is convenient to feed cells of different sizes and help the cells to be placed on the first and second lower pressure plates;

[0018] 3) The receiving plate consists of a fixed plate and a rotating plate. The rotating plate can be tilted to facilitate the discharge of the battery cells. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the battery cell hot pressing device in an embodiment of the present invention;

[0020] Figure 2 This is a top view of the three structures of the cylinder in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal mechanism of the rotating shell in an embodiment of the present invention;

[0022] Figure 4 This is a side view of the rotating shell and the annular rotating shell in an embodiment of the present invention;

[0023] Figure 5 This is a top view of the rotating shell in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the receiving plate in an embodiment of the present invention;

[0025] In the diagram, 1. Workbench, 2. Guide column, 3. Mounting plate, 4. Cylinder 1, 5. Sliding plate, 6. Upper heating plate, 7. Upper pressure plate, 8. Cylinder 2, 9. Cylinder 3, 10. Push plate, 11. Enclosure plate, 12. Movable plate, 13. Horizontal slide rail, 14. Push rod, 15. Moving plate, 16. Vertical slide rail, 17. Slider 2, 18. Limiting plate, 19. Mounting cavity, 20. Fixed rod, 21. Connecting rod, 22. Support plate, 23. Vibration damping column, 24. Top plate, 25. Hollow rod, 26. Motor 1 27. Driving gear; 28. Driven gear; 29. ​​Rotating shell; 30. Circular slide rail; 31. Arc-shaped cover; 32. Lower pressure plate one; 33. Lower pressure plate two; 34. Lower heating plate; 35. Receiving plate; 3501. Fixed plate; 3502. Rotating plate; 36. Slide groove; 37. Electromagnetic plate; 38. Slider one; 39. Slide plate; 40. Heat insulation plate one; 41. Heat insulation plate two; 42. Heat insulation rod; 43. Mounting groove; 44. Lead screw; 45. Guide rod; 46. Motor two; 47. Slider three; 48. Horizontal plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-6 As shown, the battery cell hot pressing device includes a worktable 1. Two or more guide posts 2 are fixed to the upper end of the worktable 1, and a mounting plate 3 is fixed to the upper end of each guide post 2. A cylinder 4 is fixed to the upper end of the mounting plate 3. The piston rod of cylinder 4 passes through the mounting plate 3 and is fixed to a sliding plate 5. The sliding plate 5 passes through the guide posts 2, and the guide posts 2 have through holes for the sliding plate 5 to pass through. The lower end of the sliding plate 5 is fixed to an upper heating plate 6, and the lower end of the upper heating plate 6 is fixed to an upper pressure plate 7. Cylinders 8 and 9 are fixed to the upper end of the worktable 1 and on both sides of the upper pressure plate 7, respectively. The piston rod of cylinder 8 is fixed to a push plate 10. A surrounding plate 11 is symmetrically fixed to the upper end of the worktable 1 and on one side of the push plate 10. The piston rod of cylinder 9 is fixed to a movable plate 12. Horizontal slide rails 13 are fixed to both sides of cylinder 9, and the movable plate 12 is mounted on the horizontal slide rails 13. The movable plate 12 is fixed to the moving plate 15 via the push rod 14. A vertical slide rail 16 is fixed to the end of the moving plate 15 away from the movable plate 12. Two sliders 17 are mounted on the vertical slide rail 16 and are fixed to the vertical slide rail 16 with bolts. The end of the slider 17 away from the moving plate 15 is fixed to the limiting plate 18. The distance between the two limiting plates 18 remains constant from the end of the slider 17 and then gradually increases, thereby playing a guiding and limiting role.

[0028] A mounting cavity 19 is provided on the workbench 1 and below the upper pressure plate 7. A fixing rod 20 is horizontally fixed in the mounting cavity 19. A support plate 22 is fixed to the upper end of the fixing rod 20 via a connecting rod 21. A shock-absorbing column 23 is fixed to the upper end of the support plate 22, and the upper ends of the shock-absorbing columns 23 are all fixed to the top plate 24. Hollow rods 25 are symmetrically sleeved on both sides of the support plate 22 outside the fixing rod 20. The hollow rods 25 are driven to rotate by a drive mechanism. The drive mechanism includes a motor 26 fixed to the upper end of the support plate 22. The output shaft of the motor 26 is fixed to the drive gear 27. A driven gear 28 is fixedly sleeved on the hollow rod 25. The drive gear 27 and the driven gear 28 are meshed together. A rotating shell 29 is sleeved on the fixing rod 20. The rotating shell 29 is a square cylindrical shell. The rotating shell 29 is fixed to the hollow rod 25 and is connected to the fixing rod 20 via bearings. The rotating shell 29 has open top and bottom ends. Annular slide rails 30 are fixed to both ends of the rotating shell 29. Annular grooves, adapted to the annular slide rails 30, are provided on the inner wall of the mounting cavity 19, and the annular slide rails 30 are installed within the annular grooves. Arc-shaped covers 31 are fixed to both ends of the rotating shell 29, with gaps between the upper and lower ends of the arc-shaped covers 31 and the rotating shell 29.

[0029] The rotating shell 29 has a vertically movable lower pressure plate 32 at its upper end and a lower pressure plate 33 at its lower end. The ends of the lower pressure plates 32 and 33 near the fixing rod 20 are fixed to the lower heating plate 34. A receiving plate 35 is provided inside the mounting cavity 19 and below the rotating shell 29. The inner walls of the rotating shell 29 are symmetrically provided with sliding grooves 36. An electromagnetic plate 37 is embedded in the top of each sliding groove 36. A slider 38, made of iron, is installed inside each sliding groove 36. The bottom of the sliding groove 36 is flush with the upper surface of the top plate 24. Slider 38 on the same inner wall of the rotating shell 29 is fixed to a sliding plate 39. The end of the sliding plate 39 away from slider 38 is fixed to a heat insulation plate 40. Heat insulation plates 41 are fixed to both ends of the lower pressure plates 32 and 33. The heat insulation plates 40 and 41 are fixed by heat insulation rods 42. The installation of heat insulation plate 40, heat insulation plate 41, and heat insulation rod 42 can prevent the temperature of slider 38 from becoming too high, thereby reducing the impact on the lifespan of electromagnetic plate 37.

[0030] Installation slots 43 are provided on both sides of the receiving plate 35 within the mounting cavity 19. A lead screw 44 and a guide rod 45 are respectively installed in each of the two mounting slots 43. One end of the lead screw 44 is fixed to the output shaft of motor 46, which is fixed to the worktable 1. The other end of the lead screw 44 is connected to the inner wall of the mounting slot 43 via a bearing. Both ends of the guide rod 45 are fixed to the inner wall of the mounting slot 43. The lead screw 44 and guide rod 45 pass through slider 47, and are connected to slider 47 via threads. The receiving plate 35 consists of a fixed plate 3501 and a rotating plate 3502, which are hinged to the fixed plate 3501. Slider 47 is fixed to both ends of the fixed plate 3501. The receiving plate 35 is located at the bottom of the mounting cavity 19. A horizontal plate 48 is fixed on the outer wall of the worktable 1 below the mounting cavity 19.

[0031] Working principle: The initial position of the lower pressure plate 32 is flush with the upper surface of the rotating shell 29, i.e., flush with the upper surface of the worktable 1. At this time, the electromagnetic plate 37 above is fixed, fixing the slider 38 to the slide groove 36. The distance between the two limiting plates 18 is adjusted according to the size of the battery cell, and then the slider 17 is fixed to the vertical slide rail 16 with bolts. The cylinder 9 is activated, which pushes the limiting plate 18 and the moving plate 15 above the lower pressure plate 32. The battery cell to be heat-pressed is placed between the surrounding plates 11 using a robotic arm, and then the cylinder 8 is activated, which drives the push plate 10 to push the battery cell to the upper end of the lower pressure plate 32. The limiting plate 18 can prevent the battery cell from shifting in its final placement position. When the battery cell contacts the moving plate 15, the electromagnetic plate 37 above is de-energized, and the slider 38 falls to the bottom of the slide groove 36 under the action of gravity. Simultaneously, the lower pressure plate 32 and the battery cell descend together with the slider 38, positioning the lower heating plate 34 above the top plate 24, and then resetting the push plate 10 and the limiting plate 18. The upper heating plate 6 and the lower heating plate 34, fixed to the lower pressure plate 32, are activated, and the cylinder 4 drives the sliding plate 5 downwards, using the upper pressure plate 7 and the lower pressure plate 32 to complete the heat pressing of the battery cell.

[0032] After hot pressing, motor 26 is started, driving the drive gear 27 to rotate. The drive gear 27 then drives the driven gear 28 to rotate, which in turn drives the hollow rod 25 and the rotating shell 29 to rotate. This causes the lower pressure plate 33 to rotate above the lower pressure plate 32, and the lower pressure plate 33, in conjunction with the upper pressure plate 7, initiates the hot pressing of the next battery cell. When the lower pressure plate 32 rotates to the lower end of the rotating shell 29, the slider 38 slides down under gravity into the groove 36, activating the electromagnetic plate 37 and fixing it to the lower pressure plate 32. Simultaneously, the battery cell falls onto the receiving plate 35 under gravity. Even if the battery cell separates from the lower pressure plate 32 during rotation, it can slide down along the arc-shaped cover 31 onto the receiving plate 35. Then start motor 2 46, motor 2 46 drives lead screw 44 to rotate, lead screw 44 drives slider 3 47 to move, so that fixed plate 3501 moves along the bottom of mounting cavity 19. When rotating plate 3502 moves out of mounting cavity 19, rotating plate 3502 rotates downward and tilts to overlap on horizontal plate 48, so that battery cell is discharged along rotating plate 3502.

[0033] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A battery cell hot pressing device, characterized in that: The device includes a workbench with two or more guide pillars fixed at its upper end. A mounting plate is fixed to the upper end of each guide pillar. A cylinder is fixed to the upper end of the mounting plate. The piston rod of the cylinder is fixed to a sliding plate. The lower end of the sliding plate is fixed to an upper heating plate. The lower end of the upper heating plate is fixed to an upper pressure plate. A mounting cavity is provided on the workbench below the upper pressure plate. A fixing rod is fixed inside the mounting cavity. A support plate is fixed to the upper end of the fixing rod via a connecting rod. A shock-absorbing column is fixed to the upper end of the support plate. The upper ends of the shock-absorbing columns are all fixed to a top plate. Hollow rods are symmetrically fitted around the fixing rods on both sides of the support plate. The hollow rods are driven to rotate by a driving mechanism. A rotating shell is fitted around the fixing rods. The rotating shell is fixed to the hollow rods. The upper and lower ends of the rotating shell are open. A lower pressure plate (first and second) capable of vertical movement is provided at the upper and lower ends of the rotating shell. The ends of the lower pressure plates near the fixing rods are fixed to the lower heating plate. A receiving plate is provided inside the mounting cavity below the rotating shell.

2. The battery cell hot pressing device according to claim 1, characterized in that: The drive mechanism includes a motor fixed to the upper end of the support plate. The output shaft of the motor is fixed to the drive gear. A driven gear is fixedly mounted on the hollow rod. The drive gear and the driven gear are meshed and connected.

3. The battery cell hot pressing device according to claim 1, characterized in that: The inner walls of the rotating shell are symmetrically provided with sliding grooves, and sliders are installed in the sliding grooves. The sliders on the same inner wall of the rotating shell are fixed to the sliding plate. The end of the sliding plate away from the slider is fixed to the heat insulation plate. The two ends of the lower pressure plate and the lower pressure plate are respectively fixed with heat insulation plates. The heat insulation plates are fixed by heat insulation rods.

4. The battery cell hot pressing device according to claim 3, characterized in that: An electromagnetic plate is embedded and fixed at the top of the slide, and the slider is made of iron.

5. The battery cell hot pressing device according to claim 1, characterized in that: The rotating shell is fixed with annular slide rails at both ends, and the inner wall of the mounting cavity is provided with annular grooves that are adapted to the annular slide rails. The annular slide rails are installed in the annular grooves.

6. The battery cell hot pressing device according to claim 1, characterized in that: Arc-shaped covers are fixed at both ends of the rotating shell.

7. The battery cell hot pressing device according to claim 1, characterized in that: Cylinder 2 and Cylinder 3 are fixed to the upper end of the worktable and on both sides of the upper pressure plate, respectively. The piston rod of Cylinder 2 is fixed to the push plate. A surrounding plate is symmetrically fixed to the upper end of the worktable between the push plate and the mounting cavity. The piston rod of Cylinder 3 is fixed to the movable plate. Horizontal slide rails are fixed to both sides of Cylinder 3. The movable plate is installed on the horizontal slide rails. The movable plate is fixed to the moving plate by a push rod. A vertical slide rail is fixed to the end of the moving plate away from the movable plate. Two sliders 2 are installed on the vertical slide rails. The end of slider 2 away from the moving plate is fixed to the limiting plate.

8. The battery cell hot pressing device according to claim 7, characterized in that: The distance between the two limiting plates remains constant from both ends of the slider and then gradually increases.

9. The battery cell hot pressing device according to claim 1, characterized in that: The mounting cavity is provided with mounting grooves on both sides of the receiving plate. A lead screw and a guide rod are respectively provided in the two mounting grooves. One end of the lead screw is fixed to the output shaft of the second motor, and the other end of the lead screw is connected to the inner wall of the mounting groove through a bearing. Both ends of the guide rod are fixed to the inner wall of the mounting groove. The lead screw and the guide rod pass through the third slider. The lead screw and the third slider are connected by threads. The receiving plate is composed of a fixed plate and a rotating plate. The rotating plate is hinged to the fixed plate. The third slider is fixed at both ends of the fixed plate. The receiving plate is set at the bottom of the mounting cavity. A horizontal plate is fixed on the outer wall of the worktable below the mounting cavity.

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