Film pressing device for lithium battery production

Abstract

The utility model discloses a film pressing device for lithium battery production, which comprises a bottom frame, a film pressing assembly is movably connected to the surface of one side of the bottom frame, a deflection assembly is fixedly connected to the surface of one side of the film pressing assembly, a distance adjusting assembly is fixedly connected to the outer side of the bottom frame, and film pressing treatment is performed on the left side and the right side of a lithium battery through a guide curved surface on one side of a telescopic block. Then, a rotating roller and a soft cushion are used in cooperation, film pressing treatment is conducted on the upper side and the lower side of the lithium battery twice, during the period, a movable plate and a corner curved plate are used for conducting corner edge sealing and attaching treatment on a side face edge sealing film, overall operation is fast, simple and coherent, the operation time of the whole film pressing process is shortened, and the production efficiency is improved; the distance between the two movable frames is adjusted, the distance between the two telescopic blocks and the distance between the two corner curved plates are controlled, the whole device can be effectively adjusted according to the needed size, the film pressing treatment requirements of lithium batteries of different sizes are met, and the overall practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film pressing processing in lithium battery production, and specifically relates to a film pressing device for lithium battery production. Background Technique

[0002] Lithium batteries have a high energy density. If they are not used correctly or internal failures such as short circuits, overcharging, and over-discharging occur, it may lead to serious consequences such as battery combustion and explosion. During the production process of lithium batteries, through film pasting and pressing treatment, the positive and negative electrodes of the battery chip can be separated by covering the openings on the surface of the battery cell, preventing short circuits caused by direct contact between the positive and negative electrodes, thereby reducing safety risks.

[0003] However, in the existing film pasting and pressing process of lithium batteries, manual operation cannot achieve a continuous production process like automated equipment. Each operation needs to be completed manually, which takes a lot of time and results in low overall production efficiency. Moreover, the operation steps and processes of large machinery are relatively complicated, which may lead to an increase in equipment failure rate and require more maintenance and upkeep, further increasing production costs. Summary of the Invention

[0004] The purpose of the utility model is to provide a film pressing device for lithium battery production to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A film pressing device for lithium battery production, including a chassis, one side surface of the chassis is movably connected with a film pressing assembly, one side surface of the film pressing assembly is fixedly connected with a deflection assembly, and the outside of the chassis is fixedly connected with a distance adjustment assembly;

[0007] The deflection assembly includes a cylinder, one side surface of the output end of the cylinder is fixedly connected with a moving block, one side surface of the moving block is fixedly connected with a moving plate, and one side surface of the moving plate is fixedly connected with a corner curved panel.

[0008] Further, one side surface of the chassis is fixedly connected with a rotating bearing, the inside of the rotating bearing is fixedly connected with a bidirectional threaded rod, there are two bidirectional threaded rods and they are distributed symmetrically horizontally, and the film pressing assembly includes a movable frame, and the movable frame is movably connected to the outside of the bidirectional threaded rod.

[0009] Further, there are two movable frames and they are distributed symmetrically horizontally. One side surface of the movable frame is movably connected with a rotating roller, a soft pad is fixedly connected to the outside of the rotating roller, and there are two rotating rollers at one end of one movable frame, and the two rotating rollers are distributed symmetrically vertically.

[0010] Furthermore, a limiting rod is fixedly connected to one side surface of the movable frame. One side surface of the moving block is movably connected to the outside of the limiting rod. One side surface of the moving block is fixedly connected to a telescopic frame. One side surface of the telescopic frame is movably connected to a telescopic block. A guiding curved surface is arranged on one side surface of the telescopic block. There are two telescopic blocks and they are distributed symmetrically in the horizontal direction.

[0011] Furthermore, the distance adjustment component includes a motor. One end of the bidirectional threaded rod is fixedly connected to a rotating gear. The outside of the rotating gear is movably connected to a linkage rack. The linkage rack meshes with the two rotating gears. One side surface of one of the rotating gears is fixedly connected to the output end of the motor. A limiting plate is fixedly connected to one side surface of the bottom frame. The limiting plate is arranged on the outside of the other rotating gear.

[0012] Furthermore, a lithium battery is arranged on one side surface of the bottom frame. A main battery film is arranged on the outside of the lithium battery. A side sealing film is arranged on one side surface of the main battery film.

[0013] Compared with the prior art, the utility model provides a film pressing device for lithium battery production, and has the following beneficial effects:

[0014] The utility model performs film pressing treatment on the left and right sides of the lithium battery through the guiding curved surface on one side of the telescopic block. Then, by using the cooperation of the rotating roller and the soft pad, film pressing treatment is performed on the upper and lower sides of the lithium battery twice. During this period, the side sealing film is subjected to corner sealing and fitting treatment by using the moving plate and the corner curved panel. The overall operation is fast, simple and coherent. The operation time of the whole film pressing process is shortened, the failure rate of the equipment is reduced, the production cost is reduced, and the production efficiency is improved.

[0015] The utility model drives the rotating gear fixedly connected to the output end of the motor to rotate through the motor, and at the same time drives the linkage rack and the other rotating gear to rotate synchronously, integrally driving the coaxial rotation of the two bidirectional threaded rods, facilitating the adjustment of the distance between the two movable frames. The position of the moving block is moved by using the air cylinder, and the distance between the two telescopic blocks and the distance between the two corner curved panels are controlled, so that the whole device can be effectively adjusted according to the size of the lithium battery to be processed by film pressing, meeting the requirements of film pressing treatment for lithium batteries of different sizes and improving the overall practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective structure schematic diagram of the upper view angle of the utility model;

[0017] Figure 2 is a perspective structure schematic diagram of the left view angle of the utility model;

[0018] Figure 3Schematic diagram of the sectional view of the three-dimensional structure from the left viewing angle of the present utility model;

[0019] Figure 4 Schematic diagram of the first sectional view of the three-dimensional structure of some components of the present utility model;

[0020] Figure 5 Schematic diagram of the three-dimensional structure from the right viewing angle of the present utility model;

[0021] Figure 6 Schematic diagram of the second sectional view of the three-dimensional structure of some components of the present utility model.

[0022] In the figure: 1, chassis; 2, film pressing assembly; 3, deflection assembly; 4, distance adjusting assembly; 5, lithium battery; 6, main battery film; 7, side edge sealing film; 8, bidirectional threaded rod; 9, movable frame; 10, rotating roller; 11, soft pad; 12, cylinder; 13, limiting rod; 14, moving block; 15, moving plate; 16, corner curved panel; 17, telescopic frame; 18, telescopic block; 19, guiding curved surface; 20, motor; 21, rotating gear; 22, linkage rack; 23, limiting plate; 24, rotating bearing. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3 , the present utility model provides a technical solution: a film pressing device for lithium battery production, including a chassis 1, a film pressing assembly 2 is movably connected to one side surface of the chassis 1, a deflection assembly 3 is fixedly connected to one side surface of the film pressing assembly 2, and a distance adjusting assembly 4 is fixedly connected to the outside of the chassis 1;

[0026] The deflection assembly 3 includes a cylinder 12. On one side surface of the output end of the cylinder 12, a moving block 14 is fixedly connected. On one side surface of the moving block 14, a moving plate 15 is fixedly connected. On one side surface of the moving plate 15, a corner curved panel 16 is fixedly connected. The cylinder 12 is used to change the position of the moving block 14 fixedly connected to the output end of the cylinder 12. There are two cylinders 12 provided at the upper end of an active frame 9, and the two cylinders 12 are placed opposite to each other. The distance between the moving blocks 14 fixed to the output ends of the two cylinders 12 is adjusted by the two cylinders 12, and the moving distances of the output ends of the two cylinders 12 are equal.

[0027] On one side surface of the chassis 1, a rotary bearing 24 is fixedly connected. Inside the rotary bearing 24, a bidirectional threaded rod 8 is fixedly connected. There are two bidirectional threaded rods 8 and they are distributed symmetrically in the horizontal direction. The film pressing assembly 2 includes an active frame 9, and the active frame 9 is movably connected to the outside of the bidirectional threaded rod 8. The distances of the two active frames 9 from the central position of the bidirectional threaded rod 8 at both ends of the bidirectional threaded rod 8 are equal. During the rotation of the bidirectional threaded rod 8, the positions of the two active frames 9 move synchronously in the opposite direction.

[0028] There are two active frames 9 and they are distributed symmetrically in the horizontal direction. On one side surface of the active frame 9, a rotating roller 10 is movably connected. On the outside of the rotating roller 10, a soft pad 11 is fixedly connected. At one end of an active frame 9, there are two rotating rollers 10, and the two rotating rollers 10 are distributed symmetrically in the vertical direction. The four rotating rollers 10 are arranged in pairs opposite to each other, and the four rotating rollers 10 facilitate the film on the upper and lower sides of the battery to be attached to the battery. The soft pad 11 has a certain elasticity and is used to facilitate the attachment of the battery to the outer film and prevent damage to the battery caused by excessive pressure during the film pressing process.

[0029] On one side surface of the active frame 9, a limiting rod 13 is fixedly connected. On one side surface of the moving block 14, it is movably connected to the outside of the limiting rod 13. The moving block 14 can move along the placement track of the limiting rod 13, and the moving track is always parallel to the limiting rod 13. On one side surface of the moving block 14, a telescopic frame 17 is fixedly connected. On one side surface of the telescopic frame 17, a telescopic block 18 is movably connected. On one side surface of the telescopic block 18, a guiding curved surface 19 is provided. There are two telescopic blocks 18 and they are distributed symmetrically in the horizontal direction. The guiding curved surface 19 is used to guide the film on the side of the battery to be attached to the battery.

[0030] The distance adjustment component 4 includes a motor 20. One end of a bidirectional threaded rod 8 is fixedly connected to a rotating gear 21. A linkage rack 22 is movably connected to the outside of the rotating gear 21. The linkage rack 22 meshes with the two rotating gears 21. One side surface of one of the rotating gears 21 is fixedly connected to the output end of the motor 20. A limiting plate 23 is fixedly connected to one side surface of the chassis 1. The limiting plate 23 is arranged outside the other rotating gear 21. When the motor 20 is started, it drives the rotating gear 21 connected to the output end of the motor 20 to rotate. While rotating, by using the connection between the two rotating gears 21 and the linkage rack 22, the two bidirectional threaded rods 8 are enabled to rotate synchronously and in the same direction, facilitating the adjustment of the distance between the two movable frames 9 according to the specific requirements of the battery film pressing.

[0031] A lithium battery 5 is arranged on one side surface of the chassis 1. A main battery film 6 is arranged outside the lithium battery 5. A side edge-sealing film 7 is arranged on one side surface of the main battery film 6. After the main battery film 6 is attached to the surface of the lithium battery 5, the side edge-sealing film 7 is then folded and attached to the outside of the main battery film 6.

[0032] Working principle: Please refer to Figures 1-6As shown, the utility model is fixedly connected to the total lithium battery 5 production device. Before use, the robotic arm inside the total device is used to clamp the already produced lithium battery 5, and one side of the film to be attached to the outside of the lithium battery 5 is attached and connected to the bottom end of the lithium battery 5. Then, by controlling the robotic arm, the whole is transported to the upper end of the utility model. At this time, the motor 20 drives the rotating gear 21 fixedly connected to the output end of the motor 20 to rotate. When the rotating gear 21 fixedly connected to the output end of the motor 20 rotates, it will simultaneously drive the linkage rack 22 and another rotating gear 21 to rotate synchronously, and overall drive the coaxial rotation of the two bidirectional threaded rods 8. The distance between the two movable frames 9 will increase or decrease correspondingly following the rotation of the two bidirectional threaded rods 8. The cylinder 12 drives the moving block 14 at the output end of the cylinder 12 to move, controlling the distance between the two telescopic blocks 18 and between the two corner curved panels 16, so that the overall device can be effectively adjusted according to the size of the lithium battery 5 to be processed by film pressing. After controlling the robotic arm of the total device to move the clamped lithium battery 5 downward facing the upper end of the utility model, the left and right sides of the lithium battery 5 are subjected to film pressing treatment through the guiding curved surface 19 on one side of the telescopic block 18. Then, by using the cooperation of the rotating roller 10 and the soft pad 11, the upper and lower sides of the lithium battery 5 are subjected to two film pressing treatments. During this period, the side edge sealing film 7 is subjected to corner edge sealing and fitting treatment by using the moving plate 15 and the corner curved panel 16. The overall operation is fast, simple and continuous. The operation time of the whole film pressing process is shortened, the equipment failure rate is reduced, the production cost is reduced, and the production efficiency is improved. During the film pressing process, when the lithium battery 5 reaches the middle stage of the film pressing treatment, in order to prevent the robotic arm originally clamped at the upper end from affecting the film pressing treatment, another robotic arm of the total device should clamp the lithium battery 5 that has been subjected to film pressing treatment from the lower end. After the lower end is fixedly clamped, the upper end is released. After the overall film pressing treatment, it is taken out and transported to the next process, improving the overall practicability.

Claims

1. A laminating device for lithium battery production, comprising a base frame (1), characterized in that: A film pressing assembly (2) is movably connected to a surface of one side of the base frame (1), a deflection assembly (3) is fixedly connected to a surface of one side of the film pressing assembly (2), and a distance adjustment assembly (4) is fixedly connected to the outer side of the base frame (1); The deflection assembly (3) comprises a cylinder (12), a moving block (14) being fixedly connected to a surface on one side of an output end of the cylinder (12), a moving plate (15) being fixedly connected to a surface on one side of the moving block (14), and a corner curved plate (16) being fixedly connected to a surface on one side of the moving plate (15).

2. A film pressing device for lithium battery production according to claim 1, characterized in that: A rotating bearing (24) is fixedly connected to a surface of one side of the base frame (1), and a bidirectional threaded rod (8) is fixedly connected to the inner side of the rotating bearing (24). Two bidirectional threaded rods (8) are provided and are distributed in a transverse symmetrical manner. The film pressing assembly (2) includes a movable frame (9), and the movable frame (9) is movably connected to the outer side of the bidirectional threaded rod (8).

3. A film pressing device for lithium battery production according to claim 2, characterized in that: Two movable frames (9) are provided and are distributed in a transverse symmetrical manner. A rotating roller (10) is movably connected to a surface of one side of the movable frame (9). A soft pad (11) is fixedly connected to the outer side of the rotating roller (10). Two rotating rollers (10) are provided at one end of one movable frame (9). The two rotating rollers (10) are distributed in a vertical symmetrical manner.

4. A film pressing device for lithium battery production according to claim 3, characterized in that: One side surface of the movable frame (9) is fixedly connected to a limit rod (13), one side surface of the moving block (14) is movably connected to the outside of the limit rod (13), one side surface of the moving block (14) is fixedly connected to a telescopic frame (17), one side surface of the telescopic frame (17) is movably connected to a telescopic block (18), one side surface of the telescopic block (18) is provided with a guide curved surface (19), and two telescopic blocks (18) are provided and are distributed in a transverse symmetrical manner.

5. The laminating device for lithium battery production according to claim 2, characterized in that: The pitch adjustment assembly (4) comprises a motor (20), one end of the bidirectional threaded rod (8) is fixedly connected to a rotating gear (21), the outer side of the rotating gear (21) is movably connected to a linkage rack (22), the linkage rack (22) and the two rotating gears (21) are meshed with each other, one side surface of one rotating gear (21) is fixedly connected to the output end of the motor (20), and one side surface of the base frame (1) is fixedly connected to a limit plate (23), and the limit plate (23) is arranged on the outer side of the other rotating gear (21).

6. A film pressing device for lithium battery production according to claim 5, characterized in that: A lithium battery (5) is arranged on one side surface of the base frame (1), a battery main film (6) is arranged on the outside of the lithium battery (5), and a side edge sealing film (7) is arranged on one side surface of the battery main film (6).

Images