Please prevention mechanism for production of polyimide lithium ion battery diaphragm

Abstract

The utility model discloses an anti-crease mechanism for production of a polyimide lithium ion battery diaphragm, and relates to the technical field of production of battery diaphragms. The clamping device comprises a working plate and a bottom plate, a driving gear, a first driven wheel and a second driven wheel are rotationally installed on the upper surface of the bottom plate, a chain is installed on the circumferential surfaces of the driving gear, the first driven wheel and the second driven wheel, and a plurality of lower clamping plates are evenly installed on the outer side face of the chain. A lifting sliding groove is formed in one surface of the lower clamping plate, a sliding block is slidably installed in the lifting sliding groove, an upper clamping plate is fixedly installed on one surface of the sliding block, the lower clamping plate, the upper clamping plate and a chain are arranged, the chain is driven by a driving gear to move, and the lower clamping plate and the upper clamping plate can clamp a battery diaphragm to conduct synchronous two-way stretching. And compared with asynchronous stretching, thermal shrinkage in two directions is closer, the product consistency is better, wrinkles on the surface of the diaphragm caused by multiple times of stretching can be effectively avoided, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery diaphragm production, in particular to an anti-wrinkle mechanism for the production of polyimide lithium-ion battery diaphragm. Background Art

[0002] In the structure of lithium batteries, the separator is a key internal component. Its performance determines the battery's interface structure and internal resistance, directly impacting its capacity, cycle life, and safety. High-performance separators are crucial for improving the battery's overall performance. The separator's primary function is to separate the positive and negative electrodes of the battery, preventing contact and short circuits. It also allows the passage of electrolyte ions.

[0003] Currently, lithium battery separators are generally stretched asynchronously. Due to the sequence of stretching, the surface temperature of the separator decreases over time, and the biaxial stretching effect is inconsistent, which affects the consistency of the product. At the same time, the separator is prone to wrinkles during the asynchronous stretching process. To solve the above problems, a polyimide lithium-ion battery separator production anti-wrinkle mechanism is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a polyimide lithium-ion battery diaphragm production anti-wrinkle mechanism to solve the problem that the current lithium battery diaphragm stretching generally adopts asynchronous stretching. Due to the sequence of stretching, the surface temperature of the diaphragm decreases over time, the biaxial stretching effect is inconsistent, and the consistency of the product is affected. At the same time, during the asynchronous stretching process, the diaphragm is prone to wrinkles.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a polyimide lithium-ion battery diaphragm production anti-wrinkle mechanism, comprising a working plate and a bottom plate, the upper surface of the bottom plate is rotatably mounted with a driving gear, a first driven wheel and a second driven wheel, the peripheral surfaces of the driving gear, the first driven wheel and the second driven wheel are mounted with chains, the outer side surfaces of the chains are evenly mounted with a plurality of clamping lower plates, one surface of the clamping lower plate is provided with a lifting slot, a slider is slidably mounted in the lifting slot, and one surface of the slider is fixedly mounted with a clamping upper plate.

[0007] Preferably, a supporting vertical plate is fixedly installed on the upper surface of the base plate, a top plate is fixedly installed on the upper surface of the supporting vertical plate, a special-shaped plate is fixedly installed on the upper surface of the top plate, a clamping slide groove and a lifting slide groove are provided on the peripheral side surface of the special-shaped plate, the clamping slide groove and the lifting slide groove are smoothly connected, a connecting rod is fixedly installed on one side surface of the clamping upper plate, one end of the connecting rod is rotatably connected to a sliding ball, and the sliding ball slides with the clamping slide groove and the lifting slide groove.

[0008] Preferably, the upper surface of the working plate is symmetrically fixed with side plates, and the upper surface of the working plate is fixedly mounted with a first support block and a second support block, a side surface of the first support block is provided with a through hole, a rotating shaft is installed in the through hole, one end of the rotating shaft is rotatably connected to the side plate, a second driving motor is fixedly mounted on one surface of the side plate, the power end of the second driving motor passes through the side plate and is fixedly connected to the other end of the rotating shaft, adjusting threads are provided at both ends of the rotating shaft, and a first mounting block and a second mounting block are fixedly mounted on the lower surface of the base plate, a surface of the first mounting block is provided with a threaded hole, and the adjusting thread cooperates with the threaded hole.

[0009] Preferably, a mounting hole is provided on one side of the side plate, a cooling water pipe is fixedly installed in the mounting hole, a cooling drum is rotatably installed on the other side of the side plate, a water channel is provided in the cooling drum, and the water channel is connected to the cooling water pipe.

[0010] Preferably, the second mounting block has a guide hole on one surface thereof, a guide rod is installed in the guide hole, and a through hole is provided on one side surface of the second support block, which is fixedly connected to the guide rod.

[0011] Preferably, a first driving motor is fixedly mounted on the upper surface of the top plate, and a power end of the first driving motor passes through the top plate and is connected to a driving gear.

[0012] Preferably, a boss is fixedly mounted on the upper surface of the clamping lower plate.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model is provided with a clamping lower plate, a clamping upper plate and a chain. The chain moves under the drive of the driving gear. The clamping lower plate and the clamping upper plate can clamp the battery diaphragm for synchronous bidirectional stretching. Compared with asynchronous stretching, the heat shrinkage in the two directions is closer, the product consistency is better, and wrinkles on the diaphragm surface caused by multiple stretching can be effectively avoided. It is highly practical.

[0015] 2. The utility model is provided with a clamping chute and a lifting chute. Since the height of the clamping chute is lower than the lifting chute, when the sliding ball slides in the clamping chute, the clamping lower plate and the clamping upper plate are tightly attached. When moving to the lifting chute, the clamping upper plate is lifted away from the clamping lower plate, which can automatically clamp and release the diaphragm, realize automatic synchronous stretching, improve stretching work efficiency, and further enhance practicality.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a front structural diagram of the present invention;

[0020] Figure 3 for Figure 2 BB cross-sectional structure diagram;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping assembly of the utility model;

[0022] Figure 5 This is a front structural diagram of the clamping assembly of the utility model;

[0023] Figure 6 This is a left-side structural schematic diagram of the clamping assembly of the present invention;

[0024] Figure 7 for Figure 4 A schematic diagram of the partially enlarged structure at point B in the middle;

[0025] Figure 8 for Figure 5 Schematic diagram of the partially enlarged structure at point C in the middle.

[0026] In the accompanying drawings, the list of components represented by each reference numeral is as follows: 1. working plate; 2. first drive motor; 3. side plate; 4. second drive motor; 5. top plate; 6. cooling water pipe; 7. cooling drum; 8. special-shaped plate; 9. bottom plate; 10. driving gear; 11. first driven wheel; 12. first support block; 13. rotating shaft; 14. adjusting thread; 15. guide rod; 16. second support block; 17. second driven wheel; 18. supporting vertical plate; 19. first mounting block; 20. threaded hole; 21. guide hole; 22. second mounting block; 23. clamping slide; 24. clamping lower plate; 25. boss; 26. lifting slide; 27. clamping upper plate; 28. lifting slide; 29. sliding ball; 30. connecting rod; 31. slider; 32. chain. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1-8 As shown, the utility model is a polyimide lithium-ion battery diaphragm production anti-wrinkle mechanism, including a working plate 1 and a bottom plate 9, the upper surface of the bottom plate 9 is rotatably installed with a driving gear 10, a first driven wheel 11 and a second driven wheel 17, the peripheral surfaces of the driving gear 10, the first driven wheel 11 and the second driven wheel 17 are installed with a chain 32, and the outer side surface of the chain 32 is evenly installed with a plurality of clamping lower plates 24, one surface of the clamping lower plate 24 is provided with a lifting slot 26, and a slider 31 is slidably installed in the lifting slot 26, and a clamping upper plate 27 is fixedly installed on one surface of the slider 31. By arranging the clamping lower plate 24, the clamping upper plate 27 and the chain 32, the chain 32 moves under the drive of the driving gear 10, and the clamping lower plate 24 and the clamping upper plate 27 can clamp the battery diaphragm for synchronous bidirectional stretching. Compared with asynchronous stretching, the heat shrinkage in the two directions is closer, the product consistency is better, and wrinkles on the diaphragm surface caused by multiple stretching can be effectively avoided. It is highly practical.

[0029] The upper surface of the bottom plate 9 is fixedly mounted with a supporting vertical plate 18, the upper surface of the supporting vertical plate 18 is fixedly mounted with a top plate 5, the upper surface of the top plate 5 is fixedly mounted with a special-shaped plate 8, the peripheral side of the special-shaped plate 8 is provided with a clamping chute 23 and a lifting chute 28, the clamping chute 23 and the lifting chute 28 are smoothly connected, a side surface of the clamping upper plate 27 is fixedly mounted with a connecting rod 30, one end of the connecting rod 30 is rotatably connected to a sliding ball 29, the sliding ball 29 is fixedly mounted with a connecting rod 30, and the sliding ball 29 is fixedly mounted with a connecting rod 30. 9 slides in cooperation with the clamping chute 23 and the lifting chute 28. By setting the clamping chute 23 and the lifting chute 28, since the height of the clamping chute 23 is lower than the lifting chute 28, when the sliding ball 29 slides in the clamping chute 23, the clamping lower plate 24 and the clamping upper plate 27 are in close contact. When moving to the lifting chute 28, the clamping upper plate 27 is lifted away from the clamping lower plate 24, which can automatically clamp and release the diaphragm, realize automatic synchronous stretching, improve stretching work efficiency, and further improve practicality.

[0030] The upper surface of the working plate 1 is symmetrically fixedly installed with a side plate 3, and the upper surface of the working plate 1 is fixedly installed with a first support block 12 and a second support block 16. A through hole is provided on one side of the first support block 12, and a rotating shaft 13 is installed in the through hole. One end of the rotating shaft 13 is rotatably connected to the side plate 3, and a second drive motor 4 is fixedly installed on one surface of the side plate 3. The power end of the second drive motor 4 passes through the side plate 3 and is fixedly connected to the other end of the rotating shaft 13. Adjustment threads 14 are provided at both ends of the rotating shaft 13, and a first mounting block 19 and a second mounting block 22 are fixedly installed on the lower surface of the base plate 9. A threaded hole 20 is provided on one surface of the first mounting block 19, and the adjusting thread 14 cooperates with the threaded hole 20. By setting the first mounting block 19 and the adjusting thread 14, the distance between the two clamping components can be controlled, thereby stretching diaphragms of different sizes and improving the adaptability of the equipment.

[0031] A mounting hole is provided on one side of the side plate 3, and a cooling water pipe 6 is fixedly installed in the mounting hole. A cooling roller 7 is rotatably installed on the other side of the side plate 3. A water channel is provided in the cooling roller 7, and the water channel is connected to the cooling water pipe 6. By arranging several groups of cooling rollers 7, the diaphragm can be quickly cooled and shaped, and wrinkles caused by inconsistent surface cooling can be effectively avoided.

[0032] The second mounting block 22 has a guide hole 21 on one surface thereof, in which the guide rod 15 is installed. A through hole is formed on one side of the second supporting block 16 , which is fixedly connected to the guide rod 15 .

[0033] The first drive motor 2 is fixedly mounted on the upper surface of the top plate 5 , and the power end of the first drive motor 2 passes through the top plate 5 and is connected to the driving gear 10 .

[0034] A boss 25 is fixedly mounted on the upper surface of the clamping lower plate 24 .

[0035] Example: Figures 1-8As shown, the working principle of the anti-folding mechanism for the production of polyimide lithium-ion battery diaphragms of the present invention is as follows: the second drive motor 4 works to drive the rotating shaft 13 to rotate, and the first mounting block 19 moves along with the adjusting threads 14 at both ends of the rotating shaft 13 to control the distance between the two clamping components to meet the initial size of the diaphragm. The first drive motor 2 works to drive the driving gear 10 to rotate, and the driving gear 10 drives the chain 32 to move along the driving gear 10, the first driven wheel 11 and the second driven wheel 17. Since the height of the clamping chute 23 is lower than the lifting chute 28, when the sliding ball 29 slides in the clamping chute 23, the clamping The lower plate 24 and the clamping upper plate 27 are tightly attached. When they move to the lifting slide 28, the clamping upper plate 27 rises away from the clamping lower plate 24, and can automatically clamp and release the diaphragm. The battery diaphragm is synchronously biaxially stretched. Compared with asynchronous stretching, the heat shrinkage in the two directions is closer, the product consistency is better, and it can effectively avoid wrinkles on the diaphragm surface caused by multiple stretching. At the same time, it can automatically clamp and release the diaphragm to achieve automatic synchronous stretching and improve the stretching work efficiency. After stretching, the diaphragm passes through several groups of cooling rollers 7, which can quickly cool the diaphragm and shape it, effectively avoiding wrinkles caused by inconsistent surface cooling.

[0036] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A polyimide lithium-ion battery separator production anti-wrinkle mechanism, comprising a working plate (1) and a bottom plate (9), characterized in that: A driving gear (10), a first driven wheel (11) and a second driven wheel (17) are rotatably mounted on the upper surface of the base plate (9); a chain (32) is mounted on the peripheral surfaces of the driving gear (10), the first driven wheel (11) and the second driven wheel (17); a plurality of clamping lower plates (24) are evenly mounted on the outer side surface of the chain (32); a lifting chute (26) is provided on one surface of the clamping lower plate (24); a slider (31) is slidably mounted in the lifting chute (26); and a clamping upper plate (27) is fixedly mounted on one surface of the slider (31).

2. The anti-wrinkle mechanism for producing a polyimide lithium-ion battery separator according to claim 1, characterized in that: A supporting vertical plate (18) is fixedly mounted on the upper surface of the bottom plate (9), a top plate (5) is fixedly mounted on the upper surface of the supporting vertical plate (18), a special-shaped plate (8) is fixedly mounted on the upper surface of the top plate (5), a clamping chute (23) and a lifting chute (28) are provided on the peripheral side surface of the special-shaped plate (8), the clamping chute (23) and the lifting chute (28) are smoothly connected, a connecting rod (30) is fixedly mounted on one side surface of the clamping upper plate (27), one end of the connecting rod (30) is rotatably connected to a sliding ball (29), and the sliding ball (29) is slidably matched with the clamping chute (23) and the lifting chute (28).

3. The anti-wrinkle mechanism for producing a polyimide lithium-ion battery separator according to claim 1, characterized in that: The upper surface of the working plate (1) is symmetrically fixedly mounted with a side plate (3), the upper surface of the working plate (1) is fixedly mounted with a first support block (12) and a second support block (16), a side surface of the first support block (12) is provided with a through hole, a rotating shaft (13) is installed in the through hole, one end of the rotating shaft (13) is rotatably connected to the side plate (3), a second driving motor (4) is fixedly mounted on one surface of the side plate (3), a power end of the second driving motor (4) passes through the side plate (3) and is fixedly connected to the other end of the rotating shaft (13), an adjusting thread (14) is provided at both ends of the rotating shaft (13), a first mounting block (19) and a second mounting block (22) are fixedly mounted on the lower surface of the base plate (9), a surface of the first mounting block (19) is provided with a threaded hole (20), and the adjusting thread (14) matches the threaded hole (20).

4. The anti-wrinkle mechanism for producing a polyimide lithium-ion battery separator according to claim 3, characterized in that: A mounting hole is provided on one side of the side plate (3), and a cooling water pipe (6) is fixedly installed in the mounting hole. A cooling roller (7) is rotatably installed on the other side of the side plate (3), and a water channel is provided in the cooling roller (7), which is connected to the cooling water pipe (6).

5. The anti-wrinkle mechanism for producing polyimide lithium-ion battery separator according to claim 3, characterized in that: The second mounting block (22) has a guide hole (21) formed on one surface of the second mounting block (22), a guide rod (15) is installed in the guide hole (21), and a through hole is formed on one side surface of the second supporting block (16), the through hole being fixedly connected to the guide rod (15).

6. The anti-wrinkle mechanism for producing a polyimide lithium-ion battery separator according to claim 2, characterized in that: A first drive motor (2) is fixedly mounted on the upper surface of the top plate (5), and a power end of the first drive motor (2) passes through the top plate (5) and is connected to a driving gear (10).

7. The anti-wrinkle mechanism for producing polyimide lithium-ion battery separator according to claim 1, characterized in that: A boss (25) is fixedly mounted on the upper surface of the clamping lower plate (24).

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