Automatic turn-over mechanism for square battery

Abstract

The utility model belongs to the technical field of lithium ion batteries, and particularly relates to a square battery automatic turn-over mechanism which comprises a rack, a conveying belt, a pressing mechanism and a turning mechanism, the turning mechanism is arranged at the tail end of the conveying belt and used for turning over a square battery, the pressing mechanism is located on the side portion of the turning mechanism, and the turning mechanism is used for turning over the square battery. The device is used for enabling the square battery to be tightly attached to the overturning mechanism in the overturning process of the overturning mechanism. According to the mechanism, the battery can be automatically overturned, continuous overturning work of the battery can be achieved through mutual cooperation of the conveying belt, the pressing mechanism and the overturning mechanism, workers are replaced, the working efficiency is improved, the elastic pressing belt makes contact with the surface of the battery after the whole overturning process, and therefore the surface of the battery cannot be damaged.

Description

Technical Field

[0001] This utility model belongs to the field of lithium-ion battery technology, specifically relating to an automatic flipping mechanism for square batteries. Background Technology

[0002] Lithium-ion batteries, an indispensable power source in modern technology, are widely used in numerous industries. From portable electronic devices to electric vehicles and energy storage systems, lithium-ion batteries, with their high energy density and long cycle life, have become a key force driving the development of various industries. As application scenarios continue to expand, the market is placing increasingly stringent demands on the performance and quality of lithium-ion batteries.

[0003] In the production process of lithium batteries, the wetting effect of the electrolyte plays a decisive role in battery performance. As an important carrier of ion transport during charging and discharging, the degree of electrolyte wetting within the cell directly affects many key performance indicators of the battery. When the electrolyte can uniformly and thoroughly wet the cell, the amount of electrolyte loss during the formation process of the lithium battery will be significantly reduced, and the SEI film on the negative electrode surface can be formed more uniformly, densely, and stably. This not only helps to reduce the battery's internal resistance and improve its rate performance, but also significantly improves the battery's cycle performance, extends its lifespan, and ensures that the battery can operate stably and reliably under different usage conditions.

[0004] To ensure thorough electrolyte wetting of the battery cell, a high-temperature resting process is commonly added after the electrolyte filling step. This is especially important for larger batteries, where flipping the battery during the resting process is crucial for further optimizing the high-temperature resting effect. Flipping allows the electrolyte to distribute more evenly within the cell under the influence of gravity and molecular diffusion, effectively compensating for uneven wetting that may be caused by the battery's structure and the electrolyte filling method.

[0005] However, in actual production, the battery flipping process currently relies heavily on manual operation. This traditional method has many drawbacks: manual flipping is inefficient and cannot meet the pace requirements of large-scale industrial production, severely restricting the improvement of production efficiency; during manual operation, factors such as worker fatigue and differences in operational proficiency cannot guarantee the consistency and accuracy of each flipping operation, resulting in some batteries being flipped poorly, affecting the overall product quality; in addition, direct manual contact with the battery for flipping poses significant safety hazards. Improper operation may lead to battery short circuits, fires, and other safety accidents, seriously threatening the personal safety of operators and company property.

[0006] Although some battery flipping devices exist in the prior art, such as the battery flipping device disclosed in Chinese Patent (application number: CN2018221574419), which achieves battery flipping through clamping and loading components, this device still reveals many problems in practical applications: during the flipping process, the rigid contact between the battery and the device components can easily damage the battery surface, affecting the battery's appearance and performance; the battery is not securely fixed during flipping and is prone to falling, which can not only damage the battery but also cause equipment malfunctions; moreover, this device cannot achieve continuous automated flipping, requiring frequent manual intervention, which cannot meet the needs of modern lithium battery manufacturers for efficient and stable production. Therefore, the development of an efficient, safe, and continuously automated square battery automatic flipping mechanism that does not damage the battery surface is urgently needed. Utility Model Content

[0007] The purpose of this invention is to provide an automatic flipping mechanism for square batteries, thereby solving the problems existing in the background technology.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automatic square battery flipping mechanism, comprising a frame, a conveyor belt, a pressing mechanism, and a flipping mechanism. The flipping mechanism is located at the end of the conveyor belt and is used to flip the square battery. The pressing mechanism is located on the side of the flipping mechanism and is used to make the square battery adhere tightly to the flipping mechanism during the flipping process.

[0009] Preferably, there are two conveyor belts, which rotate simultaneously via a synchronous pulley, and stop blocks are provided at intervals on the two conveyor belts.

[0010] Preferably, the flipping mechanism includes a drive motor and a flipping disk. The drive motor is mounted on the frame via a motor bracket. There are two flipping disks, and the distance between the two flipping disks is less than the width of the battery. Several slots for placing batteries are provided around the flipping disks, and a stop roller is provided on one side of the slots.

[0011] Preferably, a recycling platform is provided above the flipping mechanism, and the recycling platform is mounted on the motor bracket via a support plate.

[0012] Preferably, the pressing mechanism includes a pressing roller and a pressing belt. The pressing belt surrounds one side of the flipping mechanism. The two ends of the pressing roller are connected to the inner wall of the protective box. The pressing roller includes a first pressing roller, a second pressing roller, a third pressing roller, and a fourth pressing roller. The first and second pressing rollers are located above the flipping disc and are flush with the recycling table. The third pressing roller is directly below the second pressing roller and is flush with the lowest point of the flipping disc. The fourth pressing roller is located diagonally below the flipping disc and is lower than the conveyor belt.

[0013] Preferably, both ends of the pressure roller are connected to the side of the protective box via bearings.

[0014] Preferably, the surface of the pressing roller is provided with a rubber layer.

[0015] Preferably, the conveyor belt is provided with a baffle on its side.

[0016] Preferably, the compression band is elastic.

[0017] Preferably, the drive motor is a stepper motor.

[0018] The beneficial effects of this invention are as follows: This mechanism, through the coordinated operation of a conveyor belt, a pressing mechanism, and a flipping mechanism, achieves continuous automatic flipping of square batteries, completely replacing manual operation. Compared to traditional manual flipping methods, it significantly improves work efficiency, reduces labor costs, and meets the high-efficiency requirements for battery flipping in large-scale lithium battery production, effectively improving overall production efficiency. Throughout the flipping process, the battery surface is contacted by an elastic pressing belt. This elastic pressing belt ensures the battery is firmly attached to the flipping mechanism for smooth flipping while preventing damage to the battery surface, greatly protecting the battery's appearance and performance integrity. Especially in lithium battery production, the integrity of the battery surface is crucial for battery safety and stability. This mechanism effectively reduces problems such as scratches and wear on the battery surface caused by flipping operations, improving product quality. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is the front view of the present invention;

[0021] Figure 3 This is a front view of the internal structure of this utility model;

[0022] Figure 4 This is a side view of the internal structure of this utility model;

[0023] Figure 5 This is a schematic diagram showing the working state of the internal pressing mechanism and flipping mechanism of this utility model;

[0024] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Conveyor belt; 21. Stop block; 3. Pressing mechanism; 31. Pressing roller; 311. First pressing roller; 312. Second pressing roller; 313. Third pressing roller; 314. Fourth pressing roller; 32. Pressing belt; 33. Protective box; 4. Tilting mechanism; 41. Drive motor; 42. Tilting disc; 43. Slot; 44. Stop roller; 5. Battery; 6. Recycling table. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixed connection," and "fixed connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0029] like Figure 1 As shown, an automatic square battery flipping mechanism includes a frame 1, a conveyor belt 2, a pressing mechanism 3, and a flipping mechanism 4. The flipping mechanism is located at the end of the conveyor belt and is used to flip the square batteries. The pressing mechanism is located on the side of the flipping mechanism and is used to keep the square batteries tightly against the flipping mechanism during flipping. Two conveyor belts are mounted on the frame and rotate simultaneously via synchronous pulleys. Stops 21 are spaced apart on the two conveyor belts, and batteries 5 are placed between adjacent stops. When the conveyor belts are running, the batteries move smoothly towards the end of the conveyor belt under the constraint of the stops, preparing for the subsequent flipping operation.

[0030] like Figure 3As shown, the clamping mechanism is located on the side of the flipping mechanism. Specifically, the clamping mechanism 3 includes a clamping roller 31 and a clamping belt 32. The clamping belt 32 surrounds one side of the flipping mechanism. In this device, the clamping belt has a certain elasticity and presses against the battery surface. A protective box 33 is provided outside the clamping mechanism and the flipping mechanism. The protective box serves two purposes: supporting the drive roller and protecting the clamping mechanism and the flipping mechanism. The two ends of the drive roller are connected to the side of the protective box through bearings. Figure 5 As shown, the pressing rollers include a first pressing roller 311, a second pressing roller 312, a third pressing roller 313, and a fourth pressing roller 314. The first and second pressing rollers are arranged parallel to each other, located above the flipping disc and flush with the recovery table. The third pressing roller is located directly below the second pressing roller and flush with the lowest point of the flipping disc. The fourth pressing roller is located diagonally below the flipping disc and lower than the conveyor belt. The pressing belt is wound around the first, second, third, and fourth pressing rollers to form a closed loop. When the battery reaches the vicinity of the flipping mechanism, the pressing belt uses its own elasticity to press against the battery surface, ensuring that the battery remains firmly against the flipping mechanism during the flipping process, preventing the battery from shifting or falling off.

[0031] like Figure 4 As shown, the flipping mechanism includes a drive motor 41 and a flipping disc 42. There are two flipping discs, the distance between which is less than the width of the battery. Several slots 43 for placing batteries are provided around the flipping disc. A guide roller 44 is provided on one side of each slot. The drive motor drives the flipping disc to rotate. When the flipping disc rotates, the guide roller 44 comes into close contact with the clamping band in the clamping mechanism, confining the battery within the space between the slot and the clamping band. This prevents the battery from falling when it is vertical. A recycling platform 6 is provided above the flipping mechanism. After the flipping mechanism flips the battery, it enters the recycling platform for collection. When the battery is conveyed to the slot position of the flipping disc, the drive motor starts, causing the flipping disc to rotate. During rotation, the guide roller and the clamping band come into close contact, further confining the battery within the space formed by the slot and the clamping band. When the flipping disc rotates 180°, the battery is flipped.

[0032] Working principle: First, the square batteries 5 to be flipped are placed sequentially on the conveyor belt 2, with the batteries positioned between two adjacent stops 21. The spacing of the stops 21 is adapted to the battery size, ensuring the stability of the batteries during transport and preventing them from shifting or shaking on the conveyor belt. Side baffles on the conveyor belt 2 further prevent the batteries from slipping off the side of the conveyor belt. As the conveyor belt rotates, the batteries are smoothly transported to the end of the conveyor belt. When the batteries 5 approach the flipping mechanism 4, the pressing mechanism 3 begins to function. The elastic pressing band 32, driven by the pressing roller 31, tightly adheres to the surface of the batteries. The first pressing roller 311 and the second pressing roller 312 are located above the flipping disc 42 and flush with the recycling table 6. The third pressing roller 313 is directly below the second pressing roller and flush with the lowest point of the flipping disc. The fourth pressing roller 314 is located diagonally below the flipping disc and below the conveyor belt. This arrangement allows the pressing belt 32 to form a closed loop, pressing and fixing the battery from multiple directions. Then, when the battery reaches the slot 43 position on the flipping disc 42, the drive motor 41 (stepper motor) receives a control signal and starts working, driving the flipping disc 42 to rotate. The slots 43 around the flipping disc 42 are used for precise battery positioning. The guide roller 44 on one side of the slots makes close contact with the pressing belt 32 during the flipping process, firmly confining the battery within the space between the slots and the pressing belt. During the 180° rotation of the flipping disc 42, the battery stably completes the flipping action under the pressure of the clamping belt 32 and the obstruction of the guide roller 44, preventing the battery from falling or shifting position during the flipping process. Finally, the flipped battery 5 is sent to the upper recycling table 6 as the flipping disc 42 rotates. The recycling table 6 is mounted on the motor bracket via a support plate, and its position design ensures that the battery can smoothly transition from the flipping disc to the recycling table. On the recycling table, the battery can be conveyed or manually collected and transported to subsequent production processes, such as electrolyte wetting effect testing and packaging, thereby achieving the continuity of the entire production process.

[0033] For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A square battery automatic turning mechanism, characterized by: It includes a frame, a conveyor belt, a pressing mechanism, and a flipping mechanism. The flipping mechanism is located at the end of the conveyor belt and is used to flip the square battery. The pressing mechanism is located on the side of the flipping mechanism and is used to make the square battery stick tightly to the flipping mechanism during the flipping process.

2. The square cell automatic flipping mechanism according to claim 1, wherein: The conveyor belts consist of two belts that rotate simultaneously via a synchronous pulley, and stop blocks are spaced apart on the two conveyor belts.

3. The square cell automatic flipping mechanism according to claim 1, wherein: The flipping mechanism includes a drive motor and a flipping disk. The drive motor is mounted on the frame via a motor bracket. There are two flipping disks, and the distance between the two flipping disks is less than the width of the battery. Several slots for placing batteries are provided around the flipping disks, and a stop roller is provided on one side of the slots.

4. The square cell automatic flipping mechanism according to claim 3, wherein: A recycling platform is provided above the flipping mechanism, and the recycling platform is mounted on the motor bracket via a support plate.

5. The square cell automatic flipping mechanism according to claim 4, wherein: The pressing mechanism includes pressing rollers and pressing belts. The pressing belts surround one side of the flipping mechanism. The two ends of the pressing rollers are connected to the inner wall of the protective box. The pressing rollers include a first pressing roller, a second pressing roller, a third pressing roller, and a fourth pressing roller. The first and second pressing rollers are located above the flipping disc and are flush with the recycling table. The third pressing roller is directly below the second pressing roller and is flush with the lowest point of the flipping disc. The fourth pressing roller is located diagonally below the flipping disc and is lower than the conveyor belt.

6. The square cell automatic flipping mechanism of claim 5, wherein: The two ends of the pressure roller are connected to the side of the protective box via bearings.

7. The square cell automatic flipping mechanism of claim 5, wherein: The surface of the pressure roller is provided with a rubber layer.

8. The square cell automatic flipping mechanism of claim 2, wherein: The conveyor belt is equipped with baffles on its sides.

9. The square cell automatic flipping mechanism of claim 5, wherein: The compression band is elastic.

10. The square cell automatic flipping mechanism of claim 4, wherein: The drive motor is a stepper motor.

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