Producing and laminating equipment for soft package battery tabs

Abstract

The utility model discloses film coating equipment for producing a soft package battery tab, and belongs to the field of film coating of battery tabs. The device comprises a preheating block, a heating block and a shaping block which are arranged in a machining base in a sliding mode, a sliding flexible block is arranged in the shaping block, a heating wire for generating heat is arranged in the flexible block, a structure which can be completely attached to a thin film and has a certain temperature exists on the surface of the shaping block, the thin film can be extruded, and the shaping effect is improved. Meanwhile, a movable heating pipe is arranged on the surface of the shaping block, heating is carried out at a local position after the position is fixed through the heating pipe, the overall temperature of the area is increased, and then the surface of the shaping block has two heating modes including heating pipe local heating and heating pipe local heating; and in the other mode, the edge can be preheated and then the center can be heated for the complex-shape area of the metal block through comprehensive heating of the flexible block, uniform flowing of the film is promoted, and holes in the edge of the metal block are avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery tab processing, and in particular to a coating equipment for producing tabs of soft-pack batteries. Background Technology

[0002] The tab is a conductive metal sheet that connects the battery cell to the outside in a pouch battery. The coating is a polymer film that wraps around the tab. The coating creates a protective layer on the surface of the tab, preventing the electrolyte from corroding the tab and preventing current leakage.

[0003] The process of coating the tabs generally involves first flattening the metal strip, then bonding the metal strip and film together, followed by hot pressing to ensure a tight bond between the film and metal strip, and finally cooling and shaping. The hot pressing process typically requires three heating stages. The coating is performed before the second heating to ensure a tight bond between the film and metal strip. The second heating removes air bubbles, and the third heating causes the film edges to shrink, forming heating lines and sealing any holes at the beveled edges. However, during the heat shrinkage process, stress concentration at the tab edges and corners can obstruct film flow, easily leading to holes. Alternatively, the film may sag locally due to gravity or tension during heating, resulting in wrinkles or holes on the surface after shrinkage. Ultimately, holes may still exist between the finished metal strip and film, affecting the tab's sealing performance.

[0004] In summary, existing tab coating equipment, during the hot pressing process, cannot guarantee that the film will completely cover the metal strip when it shrinks due to stress and other factors, which may lead to the problem of holes. Utility Model Content

[0005] This invention provides a coating equipment for producing tabs of soft-pack batteries, which can solve the problem in the prior art where, during the hot pressing process of tab coating equipment, it is difficult to ensure that the film completely covers the metal strip when it shrinks due to stress and other factors, which may result in holes.

[0006] A coating equipment for producing tabs of soft-pack batteries includes a processing base, a feeding rod fixedly connected inside the processing base, and a hot pressing mechanism disposed on the surface of the processing base. The hot pressing mechanism includes:

[0007] Two preheating blocks, two heating blocks, and two shaping blocks are provided, all of which are slidably disposed inside the processing base.

[0008] A flexible block is slidably connected inside the shaping block, and a connecting spring is fixedly connected between the flexible block and the shaping block. Several heating wires are fixedly connected inside the flexible block; several heating tubes are slidably connected to the surface of the shaping block, and the distance between the heating tubes and the flexible block is greater than zero.

[0009] The detection component is fixedly installed inside the processing base;

[0010] A coating assembly is disposed between the processing base and the heating block, and the coating assembly is rotatably disposed inside the heating block.

[0011] Optionally, the flexible block includes several rigid blocks and several composite blocks. The rigid blocks are fixedly connected to the end of the connecting spring on the side near the shaping block, and a heat insulation layer is provided on this side. The rigid blocks and composite blocks are spaced apart, and the rigid blocks and composite blocks are detachably connected.

[0012] Optionally, each heating tube is fixedly connected to an operating block at one end, and a plurality of bidirectional screws are rotatably connected inside the shaping block, with each bidirectional screw threadedly connected to two operating blocks.

[0013] Optionally, a motor is fixedly connected inside the shaping block, and the end of the motor output shaft is fixedly connected to a single bidirectional screw, with a synchronization component provided between adjacent bidirectional screws.

[0014] Optionally, the synchronization component includes a synchronization pulley fixedly disposed on the surface of the bidirectional screw, and a synchronization belt is drivingly connected between adjacent synchronization pulleys.

[0015] Optionally, the detection assembly includes four support rods fixedly disposed inside the processing base, and a machine vision system is disposed between the support rods and the processing base.

[0016] Optionally, the two support rods are grouped together, with the two support rods in the same group arranged vertically and symmetrically relative to the feeding rod, and the two groups of support rods arranged horizontally and symmetrically relative to the shaping block.

[0017] Optionally, the coating assembly includes two coating blocks slidably disposed inside the processing seat. The two coating blocks are arranged vertically and symmetrically relative to the feeding rod. The distance between the side of the coating block near the feeding rod and the preheating block is greater than zero. The distance between the side of the coating block near the shaping block and the heating block is greater than zero. Each heating block is rotatably connected to a pushing column on the side near the coating block. A ring spring is fixedly connected between the pushing column and the heating block. A contact column is rotatably connected inside the pushing column.

[0018] Optionally, a number of clamping rollers are rotatably connected to the surface of the processing seat. The clamping rollers are divided into two groups, and the two groups of clamping rollers are arranged vertically and symmetrically relative to the feeding rod. A cleaning component is provided between the clamping roller near the preheating block and the processing seat.

[0019] Optionally, the cleaning assembly includes several cleaning brushes fixedly disposed on the surface of the pressure roller, the surface of the pressure roller having several through grooves, and the cleaning brushes and through grooves being staggered; a collection box is fixedly connected to the surface of the processing seat, a vacuum fan is fixedly connected inside the collection box, both the pressure roller and the collection box have connecting grooves, the connecting grooves communicating with the through grooves, and a filter screen is fixedly connected inside the collection box, the filter screen covering the vacuum fan.

[0020] This invention provides a coating equipment for producing tabs of soft-pack batteries, including a preheating block, a heating block, and a shaping block slidably disposed inside a processing base. A flexible block is slidably disposed inside the shaping block, and a heating wire for generating heat is disposed inside the flexible block. This results in a structure on the surface of the shaping block that can completely adhere to the film and has a certain temperature, allowing for compression of the film and ensuring it is firmly bonded to the surface of the metal block under external force. Simultaneously, a movable heating tube is disposed on the surface of the shaping block. After being fixed in position, the heating tube provides localized heating, causing the overall temperature of that area to rise. This results in two heating methods on the surface of the shaping block: localized heating by the heating tube and overall heating through the flexible block. For complex-shaped areas of the metal block, the edges can be preheated first, followed by heating the center, promoting uniform film flow and preventing holes from appearing at the edges of the metal block. Attached Figure Description

[0021] Figure 1 A schematic diagram of a coating equipment for producing tabs of soft-pack batteries provided by this utility model;

[0022] Figure 2 A three-dimensional sectional view of the shaping block provided by this utility model;

[0023] Figure 3 Provided by this utility model Figure 2 Enlarged view of the local structure at point A;

[0024] Figure 4 Provided by this utility model Figure 2 Enlarged view of the local structure at point B;

[0025] Figure 5 Provided by this utility model Figure 2 Enlarged view of the local structure at point C;

[0026] Figure 6 An exploded three-dimensional view of the shaping block provided by this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Processing base; 2. Feeding rod; 3. Preheating block; 4. Heating block; 5. Shaping block; 6. Connecting spring; 7. Heating wire; 8. Heating tube; 9. Rigid block; 10. Composite block; 11. Operating block; 12. Bidirectional screw; 13. Motor; 14. Synchronous pulley; 15. Synchronous belt; 16. Support rod; 17. Coating block; 18. Push column; 19. Contact column; 20. Pressure roller; 21. Cleaning brush; 22. Collection box; 23. Dust extraction fan; 24. Filter screen. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0030] like Figures 1 to 6 As shown in the figure, the present invention provides a coating equipment for producing tabs of soft-pack batteries, including a processing base 1, a feeding rod 2 fixedly connected inside the processing base 1, and a hot pressing mechanism provided on the surface of the processing base 1, the hot pressing mechanism including:

[0031] Two preheating blocks 3, two heating blocks 4, and two shaping blocks 5 are provided. The preheating blocks 3, heating blocks 4, and shaping blocks 5 are all slidably disposed inside the processing base 1. Each preheating block 3, heating block 4, and shaping block 5 forms a group, and the two groups are arranged vertically and symmetrically relative to the feeding rod 2.

[0032] A flexible block is slidably connected inside the shaping block 5. A connecting spring 6 is fixedly connected between the flexible block and the shaping block 5. The side of the flexible block near the connecting spring 6 is in contact with the shaping block 5. Several heating wires 7 are fixedly connected inside the flexible block.

[0033] It should be noted that the heating wire 7 is electrically connected to an external power source. When the heating wire 7 is energized, it generates heat, which raises the temperature of the flexible block itself.

[0034] A plurality of heating tubes 8 are slidably connected to the surface of the shaping block 5, and the distance between the heating tubes 8 and the flexible block is greater than zero;

[0035] It should be noted that the heating tube 8 is electrically connected to an external power source, and the heating tube 8 generates heat when energized.

[0036] The detection component is fixedly installed inside the processing base 1;

[0037] A coating assembly is disposed between the processing base 1 and the heating block 4, and the coating assembly is rotatably disposed inside the heating block 4;

[0038] In summary, the present invention provides a coating equipment for producing tabs of soft-pack batteries, comprising a preheating block 3, a heating block 4, and a shaping block 5 slidably disposed inside a processing base 1. A flexible block is disposed inside the shaping block 5, and a heating wire 7 for generating heat is disposed inside the flexible block. Thus, the surface of the shaping block 5 has a structure that can completely adhere to the film and has a certain temperature, enabling the film to be squeezed and firmly adhered to the surface of the metal block under external force. Simultaneously, a movable heating tube 8 is disposed on the surface of the shaping block 5. Through the heating tube 8, after being fixed in position, local heating is applied to the area, causing the overall temperature of that area to rise. This results in two heating methods on the surface of the shaping block 5: local heating by the heating tube 8 and overall heating through the flexible block. For complex-shaped areas of the metal block, the edges can be preheated first, followed by heating the center, promoting uniform film flow and preventing holes from appearing at the edges of the metal block.

[0039] In some specific implementations, the flexible block includes several rigid blocks 9 and several composite blocks 10. The rigid blocks 9 are made of aluminum alloy or copper alloy. The side of the rigid block 9 near the shaping block 5 is fixedly connected to the end of the connecting spring 6, and a heat insulation layer is provided on this side. The composite blocks 10 are made of carbon fiber composite material. The rigid blocks 9 and composite blocks 10 are spaced apart and are detachably connected. Different areas of the flexible block are constructed using different materials. The rigid blocks 9 can support and connect the composite blocks 10. Since the composite blocks 10 are made of carbon fiber composite material, they have a certain degree of flexibility and can adhere to the film, thereby ensuring the basic position of the flexible block and achieving adhesion to the film.

[0040] In some specific implementations, each heating tube 8 is fixedly connected to an operating block 11 at one end. A plurality of bidirectional screws 12 are rotatably connected inside the shaping block 5. Each bidirectional screw 12 is threadedly connected to two operating blocks 11. A motor 13 is fixedly connected inside the shaping block 5. The end of the output shaft of the motor 13 is fixedly connected to a single bidirectional screw 12. A synchronization assembly is provided between adjacent bidirectional screws 12. The position of the operating block 11 can be quickly controlled via the bidirectional screws 12, thereby changing the position of the heating tube 8. Simultaneously, the bidirectional screws 12 are directly controlled by the motor 13, facilitating user operation.

[0041] In a further embodiment, the synchronization component includes a synchronization wheel 14 fixedly disposed on the surface of the bidirectional screw 12, and a synchronization belt 15 is connected between adjacent synchronization wheels 14 for transmission; the transmission between adjacent bidirectional screws 12 is realized through the synchronization belt 15, without restricting the sliding trajectory of the synchronization belt 15 inside the shaping block 5, and thus avoiding interference of the synchronization belt 15 with the circuit connection.

[0042] In some specific implementations, the detection component includes four support rods 16 fixedly disposed inside the processing base 1. Two support rods 16 form a group, and the two support rods 16 in the same group are arranged vertically and symmetrically relative to the feeding rod 2. The two groups of support rods 16 are arranged horizontally and symmetrically relative to the shaping block 5. A machine vision system (not shown in the figure) is disposed between the support rods 16 and the processing base 1. The machine vision system can quickly compare the metal strips at different positions and directly detect the qualified status of the metal strip coating.

[0043] It should be noted that the machine vision system consists of a hardware layer, an algorithm layer, and a software layer, and is one of the core technologies of intelligent manufacturing; it is typically composed of an industrial camera, lens, light source, image processing software, and hardware devices, and is used for automated detection, measurement, recognition, and other tasks.

[0044] In some specific implementations, the coating assembly includes two coating blocks 17 slidably disposed inside the processing base 1. The two coating blocks 17 are arranged vertically and symmetrically relative to the feeding rod 2. The distance between the side of the coating block 17 near the feeding rod 2 and the preheating block 3 is greater than zero. The distance between the side of the coating block 17 near the shaping block 5 and the heating block 4 is greater than zero. Each heating block 4 near the coating block 17 is rotatably connected to a push column 18. A ring spring is fixedly connected between the push column 18 and the heating block 4. A contact column 19 is rotatably connected inside the push column 18. Through the coating blocks 17, after the metal block is initially heated, the film can be adhered to the surface of the metal block. At the same time, the metal block continues to move and first adheres to the contact column 19. The movement of the metal block causes the contact column 19 to rotate, thereby pushing the air between the film and the metal block to be discharged.

[0045] In some specific implementations, a plurality of pressure rollers 20 are rotatably connected to the surface of the processing seat 1. The pressure rollers 20 are divided into two groups, and the two groups of pressure rollers 20 are arranged vertically and symmetrically relative to the feeding rod 2. A cleaning component is provided between the pressure rollers 20 near the preheating block 3 and the processing seat 1.

[0046] In a further embodiment, the cleaning assembly includes a plurality of cleaning brushes 21 fixedly disposed on the surface of the pressure roller 20, the surface of the pressure roller 20 having a plurality of through grooves, the cleaning brushes 21 and the through grooves being staggered; a collection box 22 is fixedly connected to the surface of the processing seat 1, a vacuum fan 23 is fixedly connected inside the collection box 22, both the pressure roller 20 and the collection box 22 have connecting grooves (not shown in the figure) inside, the connecting grooves (not shown in the figure) communicating with the through grooves, a filter screen 24 is fixedly connected inside the collection box 22, and the filter screen 24 covers the vacuum fan 23;

[0047] The working principle of this utility model:

[0048] First, the metal strip is placed on the surface of the feeding rod 2, and one end of the metal strip is guided through the pressure roller 20. Then, the pressure roller 20 is rotated, flattening the metal strip and driving it to move. The metal strip first adheres to the preheating block 3, increasing the local temperature. Then, it slides to the coating block 17. The coating block 17 moves to adhere the film to the metal strip. It slides again, first adhering to the contact post 19. The sliding causes the contact post 19 to rotate, expelling air from the film and the metal strip. After passing the heating block 4, the film and metal strip are bonded. It slides again, and the machine vision system captures an image. It slides into the shaping block 5. The shaping block 5 slides, and the flexible block contacts the film. The shaping block 5 slides again, and the flexible block squeezes the film. At the same time, the composite block 10 inside the flexible block adheres to the edge of the metal strip, causing the film and metal strip to adhere completely. The heating tube 8 is activated, and the film shrinks in a local area. Then, the heating wire 7 is activated, and the edge of the film shrinks, sealing the holes. After sliding again, the machine vision system captures an image for comparison and inspection.

[0049] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A coating equipment for producing tabs of soft-pack batteries, comprising a processing base (1), wherein a feeding rod (2) is fixedly connected inside the processing base (1), characterized in that, The surface of the processing base (1) is provided with a hot pressing mechanism, the hot pressing mechanism comprising: Two preheating blocks (3), two heating blocks (4) and two shaping blocks (5) are slidably disposed inside the processing base (1); The shaping block (5) has a flexible block slidably connected inside, and a connecting spring (6) is fixedly connected between the flexible block and the shaping block (5). Several heating wires (7) are fixedly connected inside the flexible block. Several heating tubes (8) are slidably connected to the surface of the shaping block (5), and the distance between the heating tubes (8) and the flexible block is greater than zero. The detection component is fixedly installed inside the processing base (1); A coating assembly is disposed between the processing base (1) and the heating block (4), and the coating assembly is rotatably disposed inside the heating block (4).

2. The coating equipment for producing tabs of soft-pack batteries as described in claim 1, characterized in that, The flexible block includes several rigid blocks (9) and several composite blocks (10). The rigid block (9) is fixedly connected to the end of the connecting spring (6) on the side near the shaping block (5), and a heat insulation layer is provided on this side. The rigid block (9) and the composite block (10) are spaced apart, and the rigid block (9) and the composite block (10) are detachably connected.

3. The coating equipment for producing tabs of soft-pack batteries as described in claim 1, characterized in that, One end of each heating tube (8) is fixedly connected to an operating block (11), and several bidirectional screws (12) are rotatably connected inside the shaping block (5). Each bidirectional screw (12) is threadedly connected to two operating blocks (11).

4. The coating equipment for producing tabs of soft-pack batteries as described in claim 3, characterized in that, The shaping block (5) is internally connected to a motor (13), and the end of the output shaft of the motor (13) is fixedly connected to a single bidirectional screw (12). A synchronization component is provided between adjacent bidirectional screws (12).

5. The coating equipment for producing tabs of soft-pack batteries as described in claim 4, characterized in that, The synchronization component includes a synchronization wheel (14) fixedly disposed on the surface of the bidirectional screw (12), and a synchronization belt (15) is connected between adjacent synchronization wheels (14).

6. The coating equipment for producing tabs of soft-pack batteries as described in claim 1, characterized in that, The detection assembly includes four support rods (16) fixedly installed inside the processing base (1), and a machine vision system is provided between the support rods (16) and the processing base (1).

7. The coating equipment for producing tabs of soft-pack batteries as described in claim 6, characterized in that, The two support rods (16) are a group. The two support rods (16) in the same group are arranged vertically and symmetrically relative to the feeding rod (2). The two groups of support rods (16) are arranged horizontally and symmetrically relative to the shaping block (5).

8. The coating equipment for producing tabs of soft-pack batteries as described in claim 1, characterized in that, The coating assembly includes two coating blocks (17) slidably disposed inside the processing seat (1). The two coating blocks (17) are arranged vertically and symmetrically relative to the feeding rod (2). The distance between the side of the coating block (17) near the feeding rod (2) and the preheating block (3) is greater than zero. The distance between the side of the coating block (17) near the shaping block (5) and the heating block (4) is greater than zero. Each heating block (4) near the coating block (17) is rotatably connected to a push column (18). A ring spring is fixedly connected between the push column (18) and the heating block (4). A contact column (19) is rotatably connected inside the push column (18).

9. The coating equipment for producing tabs of soft-pack batteries as described in claim 1, characterized in that, The processing seat (1) is rotatably connected to several pressing rollers (20). The pressing rollers (20) are divided into two groups. The two groups of pressing rollers (20) are arranged vertically and symmetrically relative to the feeding rod (2). A cleaning component is provided between the pressing roller (20) near the preheating block (3) and the processing seat (1).

10. The coating equipment for producing tabs of soft-pack batteries as described in claim 9, characterized in that, The cleaning assembly includes several cleaning brushes (21) fixedly disposed on the surface of the pressure roller (20). Several through grooves are provided on the surface of the pressure roller (20). The cleaning brushes (21) and the through grooves are staggered. A collection box (22) is fixedly connected to the surface of the processing seat (1). A vacuum fan (23) is fixedly connected inside the collection box (22). Both the pressure roller (20) and the collection box (22) have connecting grooves that communicate with the through grooves. A filter screen (24) is fixedly connected inside the collection box (22). The filter screen (24) covers the vacuum fan (23).

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