A lithium battery pole piece stacking device

Abstract

The utility model relates to a kind of lithium battery pole piece lamination device of lithium battery production equipment technical field, including stacking platform;The stacking platform is cooperated with conveyor one, conveyor two and diaphragm unwinding component;Conveyor one and conveyor two are respectively set in the both sides of stacking platform, the diaphragm unwinding component includes support, the top of the support is fixed with support plate, the support plate is equipped with feeding roller, suction assembly and guide component, the suction assembly and guide component can be moved horizontally on support plate, the suction assembly is connected with support plate by moving assembly one, the guide component includes mounting plate, the mounting plate is connected with support plate by moving assembly two, the mounting plate is equipped with two mutually matched rotating rollers.

Description

Technical Field

[0001] This utility model belongs to the technical field of lithium battery production equipment, specifically relating to a lithium battery electrode stacking device. Background Technology

[0002] In lithium battery production, the cell pack is composed of a separator of a certain length and multiple positive and negative electrode sheets stacked in a certain logical relationship. Each stacking of the separator, positive electrode sheet, and negative electrode sheet is a stacking cycle, and a cell pack is composed of multiple electrode sheets. Patent application number 201911277524.4 discloses a lithium battery electrode stacking device, including a separator feeding mechanism and an electrode receiving mechanism. The separator feeding mechanism is located above the electrode receiving mechanism. The separator feeding mechanism includes a mounting base, a material roll wheel, a guide wheel, an adjusting plate, adjusting bolts, a pressing cylinder, a pressing wheel, a roller frame, a cutter, and a cutting cylinder. The electrode receiving mechanism includes a lifting cylinder, a sliding base, a first linear movement module, a lifting receiving base, a rotating receiving base, a rotating motor, and a pressing assembly. The pressing assembly includes a mounting side plate, a pressing motor, a bidirectional lead screw, a vertical plate, a pressing cylinder, a pressing plate, and a second linear movement module. This patent uses a rotating receiving seat to swing to both sides for stacking electrodes. However, this patent has a complex structure, and the coordination between the components requires high precision from the equipment, which is not conducive to continuous stacking and affects production efficiency. Therefore, a lithium battery electrode stacking device is needed to solve the above technical problems. Summary of the Invention

[0003] The purpose of this utility model is to address the shortcomings of the existing technology by providing a lithium battery electrode stacking device, including a stacking platform; the stacking platform is equipped with a first conveyor, a second conveyor, and a diaphragm unwinding assembly; The first conveyor and the second conveyor are respectively arranged on both sides of the palletizing platform. The diaphragm unwinding assembly includes a bracket, and a support plate is fixed on the top of the bracket. The support plate is provided with a feeding roller, a suction assembly and a guide assembly. The suction assembly and the guide assembly can move horizontally on the support plate. The suction assembly is connected to the support plate through a moving assembly. The guide assembly includes a mounting plate, and the mounting plate is connected to the support plate through a moving assembly. The mounting plate is provided with two cooperating rotating rollers.

[0004] The positive and negative electrode sheets from the electrode material machine are conveyed to the stacking platform by conveyor one and conveyor two respectively. The diaphragm is unwound from the unwinding roller and passes between two rotating rollers. The two rotating rollers guide the diaphragm to prevent it from becoming loose and to improve its flatness. The rotating rollers move back and forth in the horizontal direction under the action of the moving component two, forming a zigzag swing. The positive and negative electrode sheets from conveyor one and conveyor two are placed on the stacking platform in sequence with the diaphragm between them through the suction component for stacking operation.

[0005] Preferably, two suction components are provided, one on each side of the discharge roller. Each suction component includes a connecting plate, a vertical telescopic rod, and a vacuum suction cup. The vertical telescopic rod is an electric push rod or a hydraulic rod. One end of the connecting plate is connected to the moving component, and the fixed end of the vertical telescopic rod is fixed to the other end of the connecting plate. The telescopic end of the vertical telescopic rod points vertically downward and is fixedly connected to the vacuum suction cup. The vacuum suction cup is connected to a vacuum generator and corresponds vertically to the conveying surface of the corresponding conveyor (either conveyor 1 or conveyor 2). Through the cooperation of the vertical telescopic rod, the vacuum generator, and the vacuum suction cup, the positive and negative electrode plates on conveyor 1 and conveyor 2 can be adsorbed and fixed.

[0006] Preferably, the moving component includes a horizontal screw and a reversible motor. A horizontal groove is provided on the support plate, and the screw is disposed within the groove. Both ends of the screw are rotatably connected to the ends of the groove via bearings. One end of the screw passes through the groove and is fixedly connected to the output shaft of the motor. Two connecting plates are each fixedly connected to a slider, which is slidably disposed within the groove and threadedly engaged with the screw. The reversible rotation of the motor drives the screw to rotate in both directions, causing the two sliders to reciprocate along the screw. When one slider moves the vacuum suction cup to move the adsorbed positive electrode sheet above the stacking platform, the other slider is positioned above the discharge end of either conveyor one or conveyor two, adsorbing and fixing the negative electrode sheet on either conveyor one or conveyor two. Conversely, the reversible rotation of the motor allows the positive electrode sheet, diaphragm, and negative electrode sheet to be stacked. This arrangement ensures that the two vacuum suction cups move synchronously with the screw, preventing them from simultaneously being above the stacking platform and avoiding interference during the stacking process.

[0007] Preferably, the moving component one includes two linear modules one, which are respectively disposed on both sides of the feeding roller, and two connecting plates are respectively fixedly connected to the slide table one of the corresponding linear module one. This arrangement allows for individual control of each vacuum suction cup, and the movement of the two vacuum suction cups does not interfere with each other.

[0008] Preferably, the second moving component includes a horizontal frame and a second reversible motor. The horizontal frame is fixedly connected to a support rod via a fixed rod. A horizontal groove is provided on the horizontal frame, and a second screw is installed within the groove. Both ends of the second screw are rotatably connected to both ends of the groove via bearings. One end of the second screw passes through the groove and is fixedly connected to the output shaft of the second motor. A second slider is fixedly connected to the mounting plate. The second slider is slidably disposed within the groove and threadedly engaged with the second screw. By rotating the second motor in both directions, the second slider drives two rollers to reciprocate horizontally in a zigzag pattern, facilitating the stacking of the positive and negative electrode sheets.

[0009] Preferably, the second moving component is a second linear module, which is fixed on the support plate, and the second slide of the second linear module is fixedly connected to the mounting plate.

[0010] Preferably, a second vertical telescopic rod is fixed to the bottom of the palletizing platform. The fixed end of the second vertical telescopic rod is fixed to the ground, and the telescopic end is fixedly connected to the lower surface of the palletizing platform. The second vertical telescopic rod is an electric push rod or a hydraulic rod. The height of the palletizing platform can be reasonably adjusted as needed by extending and retracting the second vertical telescopic rod, which is beneficial for stacking positive and negative electrode sheets.

[0011] Preferably, the palletizing platform has limit plates fixed on both sides of conveyor one and conveyor two, and the top of the limit plates is provided with transition rollers. This setting can limit the position of the stacked electrode sheets, improve the stability of the stacking, and prevent the stability of the stacked electrode sheets from being affected when the diaphragm is bent in a zigzag shape. The transition rollers are in contact with the diaphragm, preventing the top of the limit plates from causing wear to the diaphragm.

[0012] This utility model also includes other components that enable the normal operation of a lithium battery electrode stacking device, such as control components for motor one and motor two, control components for hydraulic rods, control components for electric push rods, control components for vacuum generators, and control components for conveyors one and two. These are all conventional technologies and equipment in the field. Furthermore, devices or components not limited in this utility model, such as electric push rods, hydraulic rods, motors, vacuum generators, vacuum suction cups, conveyors one and two, all employ conventional technologies and equipment in the field.

[0013] Working principle: The positive electrode sheet and the negative electrode sheet are transported by conveyor one and conveyor two respectively. The unwinding roller is used to wind the diaphragm. During the stacking process, the diaphragm is unwound from the unwinding roller and passes between two rotating rollers. Under the action of the moving component two, the rotating rollers move back and forth in the horizontal direction, forming a zigzag swing. The suction component places the positive electrode sheet and the negative electrode sheet on conveyor one and conveyor two, and the diaphragm in sequence, on the stacking platform for stacking operation.

[0014] This utility model has the following advantages: it has a simple and reasonable structure, can perform continuous stacking operations, operates smoothly, improves the efficiency and quality of stacking, and is conducive to improving production efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of a lithium battery electrode stacking device in Embodiment 1 of this utility model; Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 A diagram illustrating another state; Figure 4 for Figure 3 Top view; Figure 5 This is a schematic diagram of a lithium battery electrode stacking device in Example 2; Figure 6 This is a schematic diagram of a lithium battery electrode stacking device in Example 3; Figure 7 This is a schematic diagram of a lithium battery electrode stacking device in Example 4; Figure 8 The images shown are enlarged views of the limiting plate and the palletizing platform in Examples 3 and 4.

[0017] In the diagram: 1. Palletizing platform; 2. Conveyor 1; 3. Conveyor 2; 4. Support plate; 5. Slide 1; 6. Screw 1; 7. Motor 1; 8. Connecting plate; 9. Feeding roller; 10. Vertical telescopic rod 1; 11. Vacuum suction cup; 12. Positive electrode plate; 13. Negative electrode plate; 14. Horizontal frame; 15. Screw 2; 16. Motor 2; 17. Mounting plate; 18. Rotating roller; 19. Diaphragm; 20. Fixing rod; 21. Linear module 1; 22. Linear module 2; 23. Limiting plate; 24. Transition roller. Detailed Implementation

[0018] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0019] Example 1 like Figure 1-4 As shown, this utility model provides a lithium battery electrode stacking device, including a stacking platform 1; the stacking platform 1 is equipped with a first conveyor 2, a second conveyor 3 and a diaphragm 19 unwinding assembly; The conveyor 1 2 and conveyor 2 3 are respectively arranged on both sides of the palletizing platform 1. The unwinding assembly of the diaphragm 19 includes a bracket, and a support plate 4 is fixed on the top of the bracket. The support plate 4 is provided with a feeding roller 9, a suction assembly and a guide assembly. The suction assembly and the guide assembly can move horizontally on the support plate 4. The suction assembly is connected to the support plate 4 through a moving assembly 1. The guide assembly includes a mounting plate 17. The mounting plate 17 is connected to the support plate 4 through a moving assembly 2. The mounting plate 17 is provided with two cooperating rotating rollers 18.

[0020] Positive electrode sheet 12 and negative electrode sheet 13 are conveyed to the stacking platform 1 by conveyor 2 and conveyor 3 respectively. The diaphragm 19 is unwound from the unloading roller 9 and passes between two rotating rollers 18. Under the action of the moving component 2, the rotating rollers 18 move back and forth in the horizontal direction, forming a zigzag swing. The suction component places the positive electrode sheet 12 and negative electrode sheet 13 on the stacking platform 1 in sequence with the diaphragm 19 between them for stacking operation.

[0021] Two suction components are provided, one on each side of the discharge roller 9. Each suction component includes a connecting plate 8, a vertical telescopic rod 10, and a vacuum suction cup 11. The vertical telescopic rod is either an electric push rod or a hydraulic rod. One end of the connecting plate 8 is connected to the moving component 1, and the fixed end of the vertical telescopic rod 10 is fixed to the other end of the connecting plate 8. The telescopic end of the vertical telescopic rod 10 points vertically downward and is fixedly connected to the vacuum suction cup 11. The vacuum suction cup 11 is connected to a vacuum generator and corresponds vertically to the conveying surface of the corresponding conveyor 2 or conveyor 3. Through the cooperation of the vertical telescopic rod 10, the vacuum generator, and the vacuum suction cup 11, the positive electrode 12 and the negative electrode 13 on the conveyor 2 and conveyor 3 can be adsorbed and fixed.

[0022] The moving component includes a horizontal screw 6 and a reversible motor 7. A horizontal groove 5 is provided on the support plate 4. The screw 6 is disposed within the groove 5, with both ends of the screw 6 rotatably connected to the ends of the groove 5 via bearings. One end of the screw 6 passes through the groove 5 and is fixedly connected to the output shaft of the motor 7. Two connecting plates 8 are each fixedly connected to a slider 1. Both sliders 1 are slidably disposed within the groove 5 and threadedly engaged with the screw 6. The reversible rotation of the motor 7 drives the screw 6 to rotate in both directions, causing the two sliders 1 to reciprocate along the screw 6. When one slider 1 moves the vacuum suction cup 11 to move the adsorbed positive electrode 12 above the stacking platform 1, the other slider is positioned above the discharge end of the conveyor 2 or conveyor 3, adsorbing and fixing the negative electrode 13 on the conveyor 2 or conveyor 3. The reverse is also true. Thus, with the reversible rotation of the motor 7, the positive electrode 12, the diaphragm 19, and the negative electrode 13 can be stacked.

[0023] The second moving component includes a horizontal frame 14 and a reversible motor 16. The horizontal frame 14 is fixedly connected to a support rod via a fixing rod 20. A horizontal groove 2 is provided on the horizontal frame 14, and a screw 15 is installed within the groove 2. Both ends of the screw 15 are rotatably connected to both ends of the groove 2 via bearings. One end of the screw 15 passes through the groove 2 and is fixedly connected to the output shaft of the motor 16. A slider 2 is fixedly connected to the mounting plate 17. The slider 2 is slidably disposed within the groove 2 and threadedly engaged with the screw 15. The reversible rotation of the motor 16 causes the slider 2 to drive two rollers 18 to move reciprocally in the horizontal direction, forming a zigzag pattern, facilitating the stacking of the positive electrode 12 and the negative electrode 13.

[0024] A vertical telescopic rod 2 is fixed to the bottom of the stacking platform 1. The fixed end of the vertical telescopic rod 2 is fixed to the ground, and the telescopic end of the vertical telescopic rod 2 is fixedly connected to the lower surface of the stacking platform 1. The vertical telescopic rod 2 is an electric push rod or a hydraulic rod. The height of the stacking platform 1 can be reasonably adjusted as needed by extending and retracting the vertical telescopic rod 2, which is beneficial for stacking the positive and negative electrode sheets 13.

[0025] Example 2 like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the moving component includes two linear modules 21, which are respectively disposed on both sides of the feeding roller 9. Two connecting plates 8 are fixedly connected to the slides of the corresponding linear modules 21. This arrangement allows for individual control of each vacuum suction cup 11, ensuring that the movement of the two vacuum suction cups 11 does not interfere with each other.

[0026] The second moving component is a linear module 22, which is fixed on the support plate 4. The slide of the linear module 22 is fixedly connected to the mounting plate 17.

[0027] Example 3 like Figure 6 , 8 As shown, the difference between this embodiment and Embodiment 1 is that limit plates 23 are fixed on both sides of the palletizing platform corresponding to conveyor one and conveyor two, respectively, and transition rollers 24 are provided at the top of the limit plates. This setting can limit the position of the stacked electrode sheets, improve the stability of the stacking, and prevent the stability of the stacked electrode sheets from being affected when the diaphragm is bent in a zigzag shape. The transition rollers are in contact with the diaphragm, preventing the top of the limit plates from causing wear to the diaphragm.

[0028] Example 4 like Figure 7-8As shown, the difference between this embodiment and Embodiment 2 is that limit plates 23 are fixed on both sides of the palletizing platform corresponding to conveyor one and conveyor two, respectively, and transition rollers 24 are provided at the top of the limit plates. This setting can limit the position of the stacked electrode sheets, improve the stability of the stacking, and prevent the stability of the stacked electrode sheets from being affected when the diaphragm is bent in a zigzag shape. The transition rollers are in contact with the diaphragm, preventing the top of the limit plates from causing wear to the diaphragm.

[0029] In the above embodiments, all can be equipped with a controller (PLC). Conveyor 1, Conveyor 2, Vertical Telescopic Rod 1, Vertical Telescopic Rod 2, Linear Module 1, Linear Module 2, Vacuum Suction Cup, and Vacuum Generator are all connected to the controller, which controls their operation. The control principle of the controller and the connection with each component are existing technologies and common knowledge. Those skilled in the art can refer to the instruction manual for understanding and use, and will not be elaborated here. Conveyor 1 and Conveyor 2 in the above embodiments can be belt conveyors. At the same time, in the embodiments, infrared sensors can be set at the discharge end of Conveyor 1 and Conveyor 2 to sense the position of the electrode. When the infrared sensor senses that the electrode has been conveyed to the discharge end of Conveyor 1 or Conveyor 2, the corresponding vacuum suction cup moves down to contact the electrode and adsorb it, and then the electrode is transported to the palletizing station, improving the overall accuracy of the operation.

[0030] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lithium battery electrode stacking device, comprising a stacking table; characterized in that: The palletizing station is equipped with conveyor one, conveyor two and diaphragm unwinding assembly; The first conveyor and the second conveyor are respectively arranged on both sides of the palletizing platform. The diaphragm unwinding assembly includes a bracket, and a support plate is fixed on the top of the bracket. The support plate is provided with a feeding roller, a suction assembly and a guide assembly. The suction assembly and the guide assembly can move horizontally on the support plate. The suction assembly is connected to the support plate through a moving assembly. The guide assembly includes a mounting plate, and the mounting plate is connected to the support plate through a moving assembly. The mounting plate is provided with two cooperating rotating rollers.

2. The lithium battery electrode stacking device according to claim 1, characterized in that: Two suction components are provided, which are respectively located on both sides of the discharge roller. Each suction component includes a connecting plate, a vertical telescopic rod, and a vacuum suction cup. One end of the connecting plate is connected to the moving component, and the fixed end of the vertical telescopic rod is fixed to the other end of the connecting plate. The telescopic end of the vertical telescopic rod is vertically downward and fixedly connected to the vacuum suction cup. The vacuum suction cup is connected to a vacuum generator, and the vacuum suction cup corresponds vertically to the conveying surface of the corresponding conveyor one or conveyor two.

3. A lithium battery electrode stacking device according to claim 2, characterized in that: The moving component includes a horizontal screw and a reversible motor. The support plate has a horizontal groove. The screw is disposed in the groove. Both ends of the screw are rotatably connected to the two ends of the groove via bearings. One end of the screw passes through the groove and is fixedly connected to the output shaft of the motor. Two connecting plates are fixedly connected with sliders. Both sliders are slidably disposed in the groove and threadedly engaged with the screw.

4. A lithium battery electrode stacking device according to claim 2, characterized in that: The moving component includes two linear modules, which are respectively disposed on both sides of the feeding roller, and two connecting plates are respectively fixedly connected to the slide of the corresponding linear module.

5. A lithium battery electrode stacking device according to claim 1, characterized in that: The second moving component includes a horizontal frame and a second reversible motor. The horizontal frame is fixedly connected to a support rod via a fixed rod. The horizontal frame is provided with a horizontal sliding groove. A second screw is provided in the sliding groove. The two ends of the second screw are rotatably connected to the two ends of the sliding groove via bearings. One end of the second screw passes through the sliding groove and is fixedly connected to the output shaft of the second motor. A second slider is fixedly connected to the mounting plate. The second slider is slidably disposed in the sliding groove and threadedly engaged with the second screw.

6. A lithium battery electrode stacking device according to claim 1, characterized in that: The second moving component is a linear module, which is fixed on the support plate, and the slide of the linear module is fixedly connected to the mounting plate.

7. A lithium battery electrode stacking device according to claim 1, characterized in that: A vertical telescopic rod 2 is fixed to the bottom of the palletizing platform. The fixed end of the vertical telescopic rod 2 is fixed to the ground, and the telescopic end of the vertical telescopic rod 2 is fixedly connected to the lower surface of the palletizing platform.

8. A lithium battery electrode stacking device according to claim 1, characterized in that: The palletizing station has limit plates fixed on both sides of conveyor one and conveyor two, and the top of the limit plates is provided with transition rollers.

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