Clamping and pressing structure for lithium battery lamination

Abstract

The clamping and pressing structure comprises a table top, a pole piece containing box is arranged at one end of the upper end face of the table top, an opening is formed in the lower end of the pole piece containing box, and a positioning frame is arranged at the end, opposite to the pole piece containing box, of the upper end face of the table top; a push-out mechanism is arranged on the pole piece placing box, and the push-out mechanism pushes the laminated pieces in the pole piece placing box into the positioning frame from the opening; a lifting plate is slidably connected into the positioning frame, a lifting mechanism is arranged on the lower end face of the table top, and the lifting mechanism drives the lifting plate to ascend and descend; and a pressing mechanism is arranged at one end, close to the positioning frame, of the upper end surface of the table surface, and is used for pressing the lithium battery laminations stacked in the positioning frame. The pole piece stacking device has the advantages that pole pieces can be rapidly and accurately stacked, and meanwhile the pressing effect is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production equipment technology, and in particular to a clamping and pressing structure for stacking lithium batteries. Background Technology

[0002] Lithium-ion battery lamination is a battery manufacturing process primarily used in the production of prismatic and pouch batteries. The lamination process involves stacking individual electrode sheets produced in the die-cutting process into battery cells, while the winding process involves winding the electrode sheets into battery cells. Laminated batteries consist of multiple layers of thin battery cells stacked together, each cell containing a positive electrode, a negative electrode, a separator, and an electrolyte. This three-dimensional structure increases the total area of ​​the battery, improving energy density and power output.

[0003] During the stacking process, clamping equipment is required to stack the lithium battery cells. Existing clamping equipment uses suction cups to grab the battery electrodes and then a turning mechanism to place the grabbed lithium battery electrodes in a designated position. This has the following disadvantages:

[0004] 1. The motor is gripped by a suction cup and then placed in a designated position by a steering mechanism. The entire process is time-consuming and the processing efficiency is low.

[0005] 2. After the electrodes are stacked, their height will change. In order to ensure the accuracy of the placement, the height of the electrodes also needs to be adjusted in real time.

[0006] This invention addresses these issues by proposing a clamping and pressing structure for stacking lithium battery cells, aiming to solve the aforementioned problems and enabling the clamping and pressing structure to quickly and accurately stack the electrode cells while effectively ensuring the clamping effect. Utility Model Content

[0007] To address the aforementioned shortcomings in the existing technology, this utility model provides a clamping and pressing structure for stacking lithium batteries.

[0008] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0009] A clamping and pressing structure for lithium battery stacking includes a platform.

[0010] One end of the upper surface of the table is provided with an electrode placement box, the lower end of the electrode placement box is provided with an opening, and a positioning frame is provided on the upper surface of the table opposite to the electrode placement box;

[0011] The electrode placement box is equipped with a push-out mechanism, which pushes the stacked electrodes in the electrode placement box from the opening into the positioning frame.

[0012] A lifting plate is slidably connected inside the positioning frame, and a lifting mechanism is provided on the lower end surface of the platform. The lifting mechanism drives the lifting plate to rise and fall.

[0013] A clamping mechanism is provided at one end of the upper surface of the platform near the positioning frame, which clamps the stacked lithium battery sheets inside the positioning frame.

[0014] As an improvement, the clamping mechanism includes a vertical plate, a hydraulic cylinder, and a pressure plate. The vertical plate is connected to the table surface. A top plate is provided at the upper end of the vertical plate. A hydraulic cylinder is provided on the upper end surface of the top plate. A movable plate is provided below the top plate. The piston rod of the hydraulic cylinder is connected to the movable plate. A pressure plate is provided below the movable plate. The movable plate is connected to the pressure plate through a connecting block. A guide component is provided on the vertical plate to guide the movement of the movable plate.

[0015] As an improvement, the guide component includes a slide rail and a slider. The slide rail is symmetrically provided on the side of the upright plate facing the electrode placement box. The slider is slidably connected to the slide rail and is connected to the movable plate.

[0016] As an improvement, the ejection mechanism includes a motor and a push plate. The motor is located on the side of the electrode placement box, and a cam is located on the output end of the motor. The push plate is located at the opening, and a connecting plate is located on the push plate. A transmission plate is located on the upper surface of the connecting plate, and the transmission plate is in contact with the cam. A limiting rod is located on the push plate, and the limiting rod is connected to the table surface through a support plate. The limiting rod is slidably connected to the support plate, and a limiting piece is located on the end of the limiting rod away from the push plate. A spring is located between the limiting piece and the support plate.

[0017] As an improvement, the spring is sleeved on the outside of the limiting rod.

[0018] As an improvement, the lifting mechanism includes a cylinder and a guide rod. The cylinder is connected to the lower end face of the platform. The piston rod of the cylinder is connected to the lifting plate through a connecting plate and a connecting rod. The lower end face of the lifting plate is provided with a guide rod. The lower end face of the platform is provided with a vertical rod and a limiting plate. The guide rod is slidably connected to the limiting plate.

[0019] Compared to traditional technologies, the advantages of this utility model are:

[0020] 1. The electrode stacking mechanism pushes the stacked electrodes in the electrode placement box from the opening into the positioning frame, quickly placing the battery electrodes in the positioning frame, which facilitates the efficient operation of the stacking process.

[0021] 2. During the stacking of battery electrode sheets, the lifting assembly drives the lifting plate to move downward, so that the upper surface of the electrode sheets stacked on the lifting plate is always flush with the upper surface of the table, which facilitates the placement of the electrode sheets. At the same time, when pressing, the extension length of the hydraulic cylinder piston rod is constant, which effectively improves the pressing effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the pressing mechanism of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure at point A of this utility model;

[0026] Appendix Label Reference Table:

[0027] 1. Tabletop; 2. Electrode placement box; 3. Positioning frame; 4. Lifting plate; 5. Vertical plate; 6. Hydraulic cylinder; 7. Pressure plate; 8. Top plate; 9. Movable plate; 10. Connecting block; 11. Slide rail; 12. Slider; 13. Motor; 14. Push plate; 15. Cam; 16. Transmission plate; 17. Limiting rod; 18. Limiting piece; 19. Spring; 20. Cylinder; 21. Guide rod; 22. Connecting rod; 23. Vertical rod. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0029] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0030] To make the content of this utility model easier to understand, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model.

[0031] Example 1

[0032] Combined with appendix Figure 1 and 4 The table 1 has an electrode placement box 2 at one end of its upper surface, and the electrode placement box 2 has an opening at its lower end. The table 1 has a positioning frame 3 at the end opposite to the electrode placement box 2.

[0033] The electrode placement box 2 is equipped with a push-out mechanism, which pushes the stacked electrodes in the electrode placement box 2 from the opening into the positioning frame 3.

[0034] The ejection mechanism includes a motor 13 and a push plate 14. The motor 13 is located on the side of the electrode placement box 2. A cam 15 is located on the output end of the motor 13. The push plate 14 is located at the opening. A connecting plate is located on the push plate 14. A transmission plate 16 is located on the upper surface of the connecting plate. The transmission plate 16 is in contact with the cam 15. A limiting rod 17 is located on the push plate 14. The limiting rod 17 is connected to the table 1 through a support plate. The limiting rod 17 is slidably connected to the support plate. A limiting piece 18 is located on the end of the limiting rod 17 away from the push plate 14. A spring 19 is located between the limiting piece 18 and the support plate.

[0035] The spring 19 is sleeved on the outside of the limiting rod 17.

[0036] In use, the battery electrode is placed in the electrode placement box 2. The motor 13 rotates, which drives the cam 15 to rotate. The rotation of the cam 15 drives the transmission plate 16 to move. The transmission plate 16 drives the push plate 14 to move in the opposite direction to the electrode placement box 2 through the connecting plate. The motor 13 continues to rotate, which drives the cam 15 to continue to rotate. The push plate 14 moves towards the electrode placement box 2 under the action of the spring 19, pushing the battery electrode at the lower end of the electrode placement box 2 from the opening into the positioning frame 3.

[0037] During the movement of the push plate 14, the limit rod 17 guides the movement direction of the push plate 14 and also guides the extension and retraction direction of the spring 19.

[0038] Combined with appendix Figure 2 A lifting plate 4 is slidably connected inside the positioning frame 3, and a lifting mechanism is provided on the lower end surface of the platform 1. The lifting mechanism drives the lifting plate 4 to rise and fall.

[0039] The lifting mechanism includes a cylinder 20 and a guide rod 21. The cylinder 20 is connected to the lower end face of the platform 1. The piston rod of the cylinder 20 is connected to the lifting plate 4 through a connecting plate and a connecting rod 22. The lower end face of the lifting plate 4 is provided with a guide rod 21. The lower end face of the platform 1 is provided with a vertical rod 23 and a limiting plate. The guide rod 21 is slidably connected to the limiting plate.

[0040] During the process of pushing the battery electrode into the positioning frame 3, the piston rod of the cylinder 20 extends, driving the lifting plate 4 to move downward. During the downward movement of the lifting plate 4, the guide rod 21 guides the movement direction of the lifting plate 4. The movement of the lifting plate 4 ensures that the upper surface of the electrode stacked on the lifting plate 4 remains flush with the upper surface of the platform 1, facilitating the placement of the electrode.

[0041] Combined with appendix Figure 1-3 The upper surface of the platform 1 is provided with a pressing mechanism at one end near the positioning frame 3, and the pressing mechanism presses the stacked lithium battery sheets inside the positioning frame 3.

[0042] The pressing mechanism includes a vertical plate 5, a hydraulic cylinder 6, and a pressure plate 7. The vertical plate 5 is connected to the table surface 1. A top plate 8 is provided at the upper end of the vertical plate 5. A hydraulic cylinder 6 is provided on the upper surface of the top plate 8. A movable plate 9 is provided below the top plate 8. The piston rod of the hydraulic cylinder 6 is connected to the movable plate 9. A pressure plate 7 is provided below the movable plate 9. The movable plate 9 is connected to the pressure plate 7 through a connecting block 10.

[0043] After the battery electrode sheets are stacked, the piston rod of the hydraulic cylinder 6 extends, driving the movable plate 9 to move downward. The movable plate 9 drives the pressure plate 7 to move downward through the connecting block 10, pressing the electrode sheets stacked in the positioning frame 3.

[0044] Example 2

[0045] Combined with appendix Figure 3 The upright plate 5 is provided with a guide component, which guides the movement of the movable plate 9;

[0046] The guide component includes a slide rail 11 and a slider 12. The slide rail 11 is symmetrically provided on the side of the upright plate 5 facing the electrode placement box 2. The slider 12 is slidably connected to the slide rail 11 and is connected to the movable plate 9.

[0047] During the movement of the pressure plate 7, the movable plate 9 drives the slider 12 to slide on the slide rail 11, thereby guiding the movement direction of the pressure plate 7 and ensuring the pressing effect of the pressure plate 7.

[0048] The above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.

Claims

1. A clamping and pressing structure for stacking lithium batteries, comprising a platform (1), characterized in that: The table (1) has an electrode placement box (2) at one end of its upper surface, and the electrode placement box (2) has an opening at its lower end. The table (1) has a positioning frame (3) at the end opposite to the electrode placement box (2). The electrode placement box (2) is provided with a push-out mechanism, which pushes the stacked electrodes in the electrode placement box (2) from the opening into the positioning frame (3); A lifting plate (4) is slidably connected inside the positioning frame (3), and a lifting mechanism is provided on the lower end face of the platform (1). The lifting mechanism drives the lifting plate (4) to rise and fall. The upper end of the platform (1) near the positioning frame (3) is provided with a pressing mechanism, which presses the stacked lithium battery sheets inside the positioning frame (3).

2. The clamping and pressing structure for lithium battery stacking according to claim 1, characterized in that: The pressing mechanism includes a vertical plate (5), a hydraulic cylinder (6), and a pressure plate (7). The vertical plate (5) is connected to the table surface (1). The upper end of the vertical plate (5) is provided with a top plate (8). The upper surface of the top plate (8) is provided with a hydraulic cylinder (6). The bottom of the top plate (8) is provided with a movable plate (9). The piston rod of the hydraulic cylinder (6) is connected to the movable plate (9). The bottom of the movable plate (9) is provided with a pressure plate (7). The movable plate (9) is connected to the pressure plate (7) through a connecting block (10). The vertical plate (5) is provided with a guide component, which guides the movement of the movable plate (9).

3. The clamping and pressing structure for lithium battery stacking according to claim 2, characterized in that: The guide component includes a slide rail (11) and a slider (12). The slide rail (11) is symmetrically provided on the side of the upright plate (5) facing the electrode placement box (2). The slider (12) is slidably connected on the slide rail (11) and the slider (12) is connected to the movable plate (9).

4. The clamping and pressing structure for lithium battery stacking according to claim 1, characterized in that: The ejection mechanism includes a motor (13) and a push plate (14). The side of the electrode placement box (2) is provided with a motor (13). The output end of the motor (13) is provided with a cam (15). The opening is provided with a push plate (14). The push plate (14) is provided with a connecting plate. The upper surface of the connecting plate is provided with a transmission plate (16). The transmission plate (16) is in contact with the cam (15). The push plate (14) is provided with a limiting rod (17). The limiting rod (17) is connected to the table (1) through a support plate. The limiting rod (17) is slidably connected to the support plate. The end of the limiting rod (17) away from the push plate (14) is provided with a limiting piece (18). A spring (19) is provided between the limiting piece (18) and the support plate.

5. The clamping and pressing structure for lithium battery stacking according to claim 4, characterized in that: The spring (19) is sleeved on the outside of the limiting rod (17).

6. The clamping and pressing structure for lithium battery stacking according to claim 1, characterized in that: The lifting mechanism includes a cylinder (20) and a guide rod (21). The cylinder (20) is connected to the lower end face of the platform (1). The piston rod of the cylinder (20) is connected to the lifting plate (4) through a connecting plate and a connecting rod (22). The lower end face of the lifting plate (4) is provided with a guide rod (21). The lower end face of the platform (1) is provided with a vertical rod (23) and a limiting plate. The guide rod (21) is slidably connected to the limiting plate.

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