A lithium battery production encapsulation equipment

Abstract

This utility model provides a lithium battery production encapsulation equipment, relating to the field of lithium battery production technology. The equipment includes a frame, with a mounting frame fixed to the upper center of the frame. Several enclosed curtains are fixed to both ends of the mounting frame. Hot air blowers are fixed to the center of both sides of the mounting frame. A drive motor is fixed to one corner of the frame, and a drive roller is fixed to the drive end of the drive motor. The drive roller is connected to a driven roller via three spaced conveyor belts. A connecting structure is provided at the other end of the drive roller, and a lifting frame is mounted on the connecting structure. The connecting structure can reciprocate along its own height, carrying the lifting frame. This lithium battery production encapsulation equipment, by driving the drive roller to rotate via the drive motor, not only achieves a thorough encapsulation effect, improving the performance of the encapsulation equipment, but also provides a center limit effect, improving the stability of the encapsulation equipment.

Description

Technical Field

[0001] This utility model relates to a lithium battery production encapsulation equipment, belonging to the field of lithium battery production technology. Background Technology

[0002] Lithium-ion batteries, as crucial energy storage components in modern society, use lithium metal or lithium alloys as positive and negative electrode materials, combined with non-aqueous electrolyte solutions, and are widely used in numerous fields, from portable electronic devices to electric vehicles and energy storage power stations. With the rapid development of technology and the continuous growth in demand for efficient energy storage across industries, the market size of lithium-ion batteries is constantly expanding, and the requirements for their production efficiency and quality are becoming increasingly stringent. In the lithium-ion battery production process, the encapsulation stage using encapsulation equipment is crucial. Encapsulation not only provides physical protection for lithium-ion batteries, preventing mechanical damage such as collisions and scratches during subsequent use, transportation, and storage, but also effectively isolates them from external substances such as moisture and oxygen, preventing internal chemical reactions and thus ensuring stable and reliable battery performance, extending battery life.

[0003] Currently, while existing lithium battery encapsulation equipment can encapsulate lithium batteries with encapsulating films, significant drawbacks have been exposed in actual production applications. Firstly, because the conveyor belt is in close contact with the lower surface of the encapsulated lithium battery, a heat conduction barrier is formed. This prevents the lower surface of the lithium battery from fully absorbing heat during the hot air heating process, resulting in severely uneven heating between the upper and lower surfaces. This uneven heating not only leads to inconsistent shrinkage of the encapsulating film, causing wrinkles and localized loosening, affecting the appearance quality of the lithium battery, but also weakens the sealing performance of the encapsulation layer, reducing the lithium battery's moisture resistance and oxidation resistance. This severely restricts the application effect of the encapsulation equipment, resulting in suboptimal performance.

[0004] On the other hand, the vibrations generated by the conveyor belt during operation can easily cause the lithium batteries, which are being conveyed and encapsulated in plastic film, to shift position. Once the lithium battery shifts and approaches the hot air blower, it will experience excessive heat flux in that area, causing the plastic film to carbonize rapidly, the lithium battery casing to deform, and even damaging the internal electrode materials and electrolyte, greatly shortening the lifespan of the lithium battery. In addition, the shifted lithium battery may also collide with other components inside the equipment, causing abnormal shutdowns and seriously affecting the stability of the encapsulation equipment, thus making the equipment less stable in use. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a lithium battery production molding and encapsulation equipment, which overcomes the shortcomings of the existing technology and effectively solves the problems of poor performance and poor stability of the molding and encapsulation equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A lithium battery production encapsulation equipment includes a frame, an mounting frame fixed at the middle of the upper end of the frame, several closed curtains fixed at both ends of the mounting frame, hot air blowers fixed at the middle of both sides of the mounting frame, a drive motor fixed at one corner of the frame, an active roller fixed at the drive end of the drive motor, and the active roller connected to a driven roller through three spaced conveyor belts.

[0008] The other end of the active roller is provided with a connecting structure, and a lifting frame is provided on the connecting structure; the connecting structure can move back and forth along its own height direction with the lifting frame to lift the lithium battery covered with plastic film that is transported here.

[0009] Preferably, the connection structure includes a fixed frame, a driving rod fixed to the other end of the fixed frame, a driving frame slidably connected to the outer surface of the driving rod, a through groove in the middle of the driving frame, and a lifting frame fixed to one end of the driving frame.

[0010] Preferably, one end of the fixed frame is fixed to the end of the drive roller away from the drive motor, the outer surface of the drive roller is rotatably connected to the inner wall of one end of the frame, the outer surface of the driven roller is rotatably connected to the inner wall of the other end of the frame, and one end of the driving rod is fixed to one end of the fixed frame.

[0011] Preferably, the outer surface of the driving rod is slidably connected to the inner wall of the through groove, the through groove passes through the middle of the driving frame, the cross section of the driving frame is L-shaped, one end of the driving frame is fixed to one side of the lifting frame, the outer surface of the lifting frame is slidably connected to the inner wall of the middle part of the frame, and the vertical section of the lifting frame is U-shaped.

[0012] Preferably, a fixed rod is fixed in the middle of the lifting frame, and a connecting frame is rotatably connected to both ends of the fixed rod. A sliding frame is rotatably connected to the other end of each of the two connecting frames, and a limit frame is fixed to the adjacent ends of the two sliding frames.

[0013] Preferably, the middle part of the fixing rod is fixed to the middle part of the lifting frame, and the two ends of the fixing rod are rotatably connected to the near ends of the two connecting frames, and the far ends of the two connecting frames are rotatably connected to the far ends of the two sliding frames.

[0014] Preferably, the outer surfaces of the two sliding frames are slidably connected to the inner walls on both sides of the mounting frame. The two sliding frames are symmetrically distributed, and the vertical cross-section of each sliding frame is L-shaped. The middle part of the two limiting frames is fixed at the near ends of the two sliding frames. The near sides of the two limiting frames are arc-shaped. The two limiting frames are in clearance fit with three spaced conveyor belts.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This lithium battery production encapsulation equipment uses a drive motor to drive the active roller to rotate, so that the fixed frame, drive rod, drive frame, through groove, and lifting frame work together to achieve a full encapsulation effect. This effectively avoids encapsulation defects such as wrinkles and loosening caused by uneven local heating, thereby improving the performance of the encapsulation equipment.

[0017] 2. This lithium battery production encapsulation equipment uses a drive motor to drive the active roller to rotate, which allows the fixed rod, connecting frame, sliding frame, and limiting frame to work together to achieve a center limiting effect, avoiding local overheating damage caused by misalignment, and preventing the lithium battery from colliding with equipment components, thereby improving the stability of the encapsulation equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the mounting bracket structure of this utility model;

[0021] Figure 4 This is a partial structural schematic diagram of the present invention.

[0022] In the diagram: 1. Frame; 2. Mounting frame; 3. Enclosed curtain; 4. Hot air blower; 5. Drive motor; 6. Drive roller; 7. Conveyor belt; 8. Driven roller; 9. Fixed frame; 10. Drive rod; 11. Drive frame; 12. Through slot; 13. Lifting frame; 14. Fixed rod; 15. Connecting frame; 16. Sliding frame; 17. Limiting frame. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Example 1

[0025] This utility model provides a lithium battery production encapsulation equipment.

[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4The system includes a frame 1, with a mounting bracket 2 fixed to the upper middle part of the frame 1. Several enclosed curtains 3 are fixed to both ends of the mounting bracket 2. Hot air blowers 4 are fixed to the middle of both sides of the mounting bracket 2. The hot air blowers 4 are LEISTER 11kW high-power hot air blowers, which have been fully disclosed and will not be described in detail here. A drive motor 5 is fixed to one corner of the frame 1. The drive motor 5 and the two hot air blowers 4 are equipped with connecting wires and plugs that can be plugged into a power socket to supply power. An active roller 6 is fixed to the drive end of the drive motor 5. The active roller 6 is connected to the driven roller 8 through three spaced conveyor belts 7. A connecting structure is provided at the other end of the active roller 6. The connecting structure includes a fixed frame 9. A driving rod 10 is fixed to the other end of the fixed frame 9. A driving frame 11 is slidably connected to the outer surface of the driving rod 10. A through groove 12 is opened in the middle of the driving frame 11. A lifting frame 13 is fixed to one end of the driving frame 11.

[0027] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4 It is worth noting that one end of the fixed frame 9 is fixed to the end of the active roller 6 away from the drive motor 5. The outer surface of the active roller 6 is rotatably connected to the inner wall of one end of the frame 1. The outer surface of the driven roller 8 is rotatably connected to the inner wall of the other end of the frame 1. One end of the driving rod 10 is fixed to one end of the fixed frame 9. The outer surface of the driving rod 10 is slidably connected to the inner wall of the through groove 12. The through groove 12 passes through the middle of the driving frame 11. The cross section of the driving frame 11 is L-shaped. One end of the driving frame 11 is fixed to one side of the lifting frame 13. The outer surface of the lifting frame 13 is slidably connected to the inner wall of the middle part of the frame 1. The vertical section of the lifting frame 13 is U-shaped.

[0028] In use, this invention employs a drive motor 5 to rotate the active roller 6, which, along with the driven roller 8, forms a transmission system via a conveyor belt 7. Multiple sets of spaced conveyor belts 7 operate smoothly under the drive of the roller sets, pushing the lithium batteries encased in plastic film forward along the conveyor path. When the lithium battery reaches the inlet of the mounting frame 2, it is squeezed through the sealing curtain 3 and enters the plastic sealing working area within the mounting frame 2. At this time, the hot air blowers 4 on both sides of the mounting frame 2 are simultaneously activated, and the hot air preheats and shrinks the plastic film.

[0029] Simultaneously, the fixed frame 9, coaxially fixed with the drive roller 6, rotates synchronously, driving the drive rod 10, which passes through the through groove 12 in the middle of the drive frame 11, to perform circular motion. Driven by the drive rod 10, the lifting mechanism composed of the drive frame 11 and the lifting frame 13 performs precise up-and-down reciprocating motion under the guidance and limiting action of the inner wall in the middle of the frame 1. When the lithium battery is conveyed to the top of the lifting frame 13, the lifting frame 13 rises in time, lifting the lithium battery from the surface of the conveyor belt 7, so that the bottom area, which was originally in contact with the conveyor belt 7 and was not heated enough, is fully exposed to the hot air coverage of the hot air blowers 4 on both sides. Through this dynamic lifting mechanism, the plastic sealing film on the surface of the lithium battery can be heated in all directions and evenly, achieving a full sealing effect, effectively avoiding sealing defects such as wrinkles and loosening caused by uneven local heating, thereby improving the performance of the sealing equipment.

[0030] Example 2

[0031] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 Based on Embodiment 1, a central limiting function has been added;

[0032] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4 It is worth noting that a fixed rod 14 is fixed in the middle of the lifting frame 13, and a connecting frame 15 is rotatably connected to both ends of the fixed rod 14. A sliding frame 16 is rotatably connected to the other end of each of the two connecting frames 15. A limit frame 17 is fixed to the near end of each of the two sliding frames 16. The middle of the fixed rod 14 is fixed in the middle of the lifting frame 13, and the two ends of the fixed rod 14 are rotatably connected to the near end of each of the two connecting frames 15. The far end of each of the two connecting frames 15 is rotatably connected to the far end of each of the two sliding frames 16. The outer surfaces of the two sliding frames 16 are slidably connected to the inner walls on both sides of the mounting frame 2. The two sliding frames 16 are symmetrically distributed, and the vertical cross-section of each sliding frame 16 is L-shaped. The middle of the two limit frames 17 is fixed to the near end of each of the two sliding frames 16. The near sides of each of the two limit frames 17 are arc-shaped. The two limit frames 17 are in clearance fit with the three spaced conveyor belts 7.

[0033] In use, this invention works as follows: the drive motor 5 drives the active roller 6 to rotate, causing the fixed frame 9, which is coaxially fixed with the active roller 6, to rotate synchronously. The fixed frame 9, through the cooperation of the drive rod 10 and the through groove 12, converts the rotational motion into linear motion, driving the lifting mechanism composed of the drive frame 11 and the lifting frame 13 to slide precisely up and down under the constraint of the limiting guide rail in the middle of the frame 1. The fixed rod 14 fixed at the lower end of the lifting frame 13 moves up and down synchronously, transmitting the vertical motion to the sliding frame 16 on the inner wall of the mounting frame 2 through the connecting frame 15 rotatably connected at both ends. Under the limiting action of the inner wall of the mounting frame 2, the two sliding frames 16 slide horizontally in opposite directions, thereby driving the two limiting frames 17 fixed at the lower end to reciprocate in opposite directions while maintaining a safe clearance from the conveyor belt 7.

[0034] When the lifting frame 13 moves upward to lift the lithium battery covered with plastic sealing film, the fixing rod 14 moves upward, causing the two sliding frames 16 to slide in opposite directions, so that the limiting frames 17 move away from each other synchronously, leaving space for the lithium battery to be lifted. When the lifting frame 13 completes the plastic sealing auxiliary operation and moves down to its original position, the two limiting frames 17 move closer to each other, accurately pushing the unsealed lithium battery conveyed on the conveyor belt 7 to the central area. Through this linkage mechanism, the limiting frames 17 can effectively correct the positional deviation of the lithium battery during the conveying process, achieving the effect of central limiting, avoiding local overheating damage caused by deviation, and preventing the lithium battery from colliding with equipment components, thereby improving the stability of the plastic sealing equipment.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic sealing device for lithium battery production, comprising a frame (1), characterized in that: The frame (1) has a mounting frame (2) fixed at the middle of the upper end. Several closed curtains (3) are fixed at both ends of the mounting frame (2). Hot air blowers (4) are fixed at the middle of both sides of the mounting frame (2). A drive motor (5) is fixed at one corner of the frame (1). An active roller (6) is fixed at the drive end of the drive motor (5). The active roller (6) is connected to the driven roller (8) through three spaced conveyor belts (7). The other end of the active roller (6) is provided with a connecting structure, and a lifting frame (13) is provided on the connecting structure; the connecting structure can move back and forth with the lifting frame (13) in its own height direction to lift the lithium battery covered with plastic film that is transported here.

2. The plastic packaging equipment for lithium battery production according to claim 1, characterized in that: The connection structure includes a fixed frame (9), a drive rod (10) is fixed at the other end of the fixed frame (9), a drive frame (11) is slidably connected to the outer surface of the drive rod (10), a through groove (12) is provided in the middle of the drive frame (11), and a lifting frame (13) is fixed at one end of the drive frame (11).

3. The plastic packaging equipment for lithium battery production of claim 2, wherein: One end of the fixed frame (9) is fixed to the end of the active roller (6) away from the drive motor (5). The outer surface of the active roller (6) is rotatably connected to the inner wall of one end of the frame (1). The outer surface of the driven roller (8) is rotatably connected to the inner wall of the other end of the frame (1). One end of the driving rod (10) is fixed to one end of the fixed frame (9).

4. The plastic packaging equipment for lithium battery production of claim 2, wherein: The outer surface of the drive rod (10) is slidably connected to the inner wall of the through groove (12). The through groove (12) passes through the middle of the drive frame (11). The cross section of the drive frame (11) is L-shaped. One end of the drive frame (11) is fixed to one side of the lifting frame (13). The outer surface of the lifting frame (13) is slidably connected to the inner wall of the middle part of the frame body (1). The vertical section of the lifting frame (13) is U-shaped.

5. The plastic packaging equipment for lithium battery production of claim 1, wherein: A fixed rod (14) is fixed in the middle of the lifting frame (13). Both ends of the fixed rod (14) are rotatably connected to a connecting frame (15). The other ends of the two connecting frames (15) are rotatably connected to a sliding frame (16). The adjacent ends of the two sliding frames (16) are fixed with a limit frame (17).

6. The plastic packaging equipment for lithium battery production of claim 5, wherein: The middle part of the fixed rod (14) is fixed to the middle part of the lifting frame (13). The two ends of the fixed rod (14) are rotatably connected to the near ends of the two connecting frames (15). The far ends of the two connecting frames (15) are rotatably connected to the far ends of the two sliding frames (16).

7. The plastic packaging equipment for lithium battery production of claim 5, wherein: The outer surfaces of the two sliding frames (16) are slidably connected to the inner walls on both sides of the mounting frame (2). The two sliding frames (16) are symmetrically distributed. The vertical cross-section of each sliding frame (16) is L-shaped. The middle part of the two limiting frames (17) is fixed at the near ends of the two sliding frames (16). The near sides of the two limiting frames (17) are arc-shaped. The two limiting frames (17) are in clearance fit with the three spaced conveyor belts (7).

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