Film sticking machine for battery

Abstract

The utility model relates to the technical field of lithium battery production, in particular to a film sticking machine for batteries, which comprises a machine body and a feeding belt arranged at the feeding end of the machine body. The discharging belt is arranged at the discharging end of the machine body; the alloy platform is arranged in the machine body; and a film pressing assembly. According to the utility model, the battery to be coated with the film enters the lower part of the film pressing assembly, the film body is conveyed by the conveying assembly and is positioned on the upper surface of the battery body, and the film pressing plate is pushed by the second air cylinder to be close to the surface of the battery body, so that the film body arranged on the upper surface of the battery body can be orderly pressed on the surface of the battery; the problems of large gap and high possibility of swelling caused by manual winding can be avoided, the bonding effect of the film body and the lithium battery is improved, and the film body is prevented from being cracked due to swelling, so that the risk of swelling of the film body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a film applicator for batteries. Background Technology

[0002] Soft-pack lithium batteries consist of a liquid lithium-ion battery encased in a polymer shell. The biggest difference between them and other batteries lies in the soft-pack material (aluminum-plastic composite film), which is also the most critical and technically challenging material in soft-pack lithium batteries. The soft-pack material typically consists of three layers: an outer barrier layer (usually an outer protective layer made of nylon BOPA or PET), a permeation barrier layer (the middle layer of aluminum foil), and an inner layer (a multifunctional high-barrier layer).

[0003] Lithium battery film application typically involves clamping the battery onto a device and manually wrapping the film around it. During the wrapping process, the film may bulge and develop gaps due to different wrapping angles, leading to defects such as film rupture during subsequent pressing processes. Even if the bulging does not result in rupture, it can exacerbate the bulging during subsequent folding processes, thereby increasing the probability of lithium battery bulging and rupture.

[0004] Therefore, we designed a film applicator for batteries. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing technologies easily cause lithium batteries to bulge and lead to film rupture, and to propose a film applicator for batteries.

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

[0007] A battery film applicator includes a body and further includes:

[0008] A feeding belt is installed at the feed end of the machine body;

[0009] A feeding belt is installed at the discharge end of the machine body;

[0010] An alloy platform, wherein the alloy platform is disposed inside the body; and

[0011] A film pressing assembly, comprising a second cylinder disposed on the top of the alloy platform, a push rod disposed at the output end of the second cylinder, and a film pressing plate disposed at the bottom of the push rod.

[0012] Preferably, the alloy platform is provided with a conveying assembly, which includes a first film roll symmetrically arranged on the top of the alloy platform, a second film roll arranged on the side wall of the alloy platform, and a plurality of conveying rollers arranged at the bottom of the alloy platform.

[0013] Preferably, the sidewall of the alloy platform is further provided with a clamping assembly, which includes a clamping cylinder fixed to the sidewall of the alloy platform and a clamping block disposed at the output end of the clamping cylinder and capable of relative movement.

[0014] Preferably, the machine body is provided with a light source assembly, which includes a column disposed inside the machine body, a slider disposed on the column, and a light source disposed on the slider.

[0015] Preferably, the machine body is provided with a sliding assembly, which includes a linear motor disposed on the side wall of the machine body, a mounting plate disposed on the moving end of the linear motor, a sliding plate fixedly disposed on the side wall of the mounting plate, and a plurality of adsorption components disposed on the sliding plate.

[0016] Preferably, the adsorption assembly includes a first support frame disposed on a sliding plate, a dispersion frame disposed on the first support frame, and a plurality of suction nozzles disposed at the bottom of the dispersion frame.

[0017] Preferably, the sliding plate is equipped with a barcode scanner for scanning the battery body, the machine body is equipped with a glass platform for detecting the battery body, the machine body is also equipped with a defective belt for discharging unqualified battery bodies, and the sliding plate is equipped with a second support frame for processing the battery body.

[0018] Preferably, the machine body is provided with a pushing assembly, which includes a first cylinder disposed on the side wall of the sliding plate and a third support frame slidably disposed on the sliding plate, wherein the output end of the first cylinder is fixedly connected to the third support frame.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. In this utility model, the battery to be coated enters below the film pressing assembly, the film is conveyed by the conveying assembly and is located on the upper surface of the battery body. The second cylinder pushes the film pressing plate closer to the surface of the battery body, so that the film placed on the upper surface of the battery body can be neatly pressed onto the battery surface. In this way, the problem of large gaps and easy bulging caused by manual winding can be avoided, the adhesion effect between the film and the lithium battery can be improved, and the film can be prevented from bulging and cracking, thereby reducing the risk of film bulging.

[0021] 2. In this utility model, when the lithium battery first enters the feeding conveyor belt, it can be identified by a barcode scanner. If the lithium battery is ready for the coating process, the sliding component and the adsorption component work together to transfer the lithium battery to the glass platform for subsequent pressing operations. If the lithium battery does not meet the coating requirements, the sliding component and the adsorption component work together to transfer the unqualified lithium battery to the defective conveyor belt and finally remove it from the defective conveyor belt. In this way, the barcode scanner can perform a quality inspection process on the product before coating, which can improve the coating quality of the lithium battery. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a battery film applicator proposed in this utility model;

[0023] Figure 2 This utility model proposes a battery film applicator. Figure 1 Local structural diagram;

[0024] Figure 3 This utility model proposes a battery film applicator. Figure 2 Enlarged view of the structure of the Chinese A label;

[0025] Figure 4 This utility model proposes a battery film applicator. Figure 2 Enlarged view of the structure of the Chinese B-number;

[0026] Figure 5 This is a top view of the internal structure of a battery film applicator proposed in this utility model;

[0027] Figure 6 This utility model proposes a battery film applicator. Figure 5 Local structural diagram;

[0028] Figure 7 This is a side view of a battery film applicator proposed in this utility model;

[0029] Figure 8 This is a front view of a battery film applicator proposed in this utility model;

[0030] Figure 9 This is a schematic diagram of the molding assembly and the feeding conveyor belt;

[0031] Figure 10 for Figure 9 A magnified view of part C in the middle.

[0032] In the diagram: 1. Machine body; 2. Feeding belt; 3. Defective belt; 4. Discharging belt; 5. Hanging plate; 501. Restricting slide rail; 6. Sliding plate; 601. First support frame; 602. Dispersing frame; 603. Barcode scanner; 604. Second support frame; 7. Suction nozzle; 8. Glass platform; 9. First cylinder; 10. Third support frame; 11. Battery body; 12. Column; 1201. Slider; 1202. Light source; 13. Alloy platform; 1301. Second cylinder; 1302. Push rod; 1303. Pressing plate; 1304. Conveying roller; 131. Clamping cylinder; 132. Clamping block; 14. First film roll; 15. Second film roll; 16. Intermediate plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0034] Reference Figures 1-10 A battery coating machine includes a machine body 1, a feeding belt 2, a discharging belt 4, an alloy platform 13, and a pressing assembly. The battery body 11 to be coated is placed inside the machine body 1. The feeding belt 2 is located at the feeding end of the machine body 1, the discharging belt 4 is located at the discharging end of the machine body 1, and the alloy platform 13 is located inside the machine body 1. The pressing assembly mainly presses the film on the surface of the lithium battery to prevent the film from peeling off around the lithium battery. At the same time, with the help of the pressing assembly, the lithium battery bulging caused by peeling off can be avoided, thereby improving the overall coating effect of the lithium battery.

[0035] When a lithium battery needs to undergo a lamination process, the feeding belt 2 is driven by an external power source to transport the battery body 11. The battery body 11 enters the machine body 1 via the feeding belt 2, where it undergoes lamination under the action of the lamination assembly. After lamination, the lithium battery leaves the machine body 1 via the unloading belt 4, preventing obstruction of the next battery body 11 to be lamination. It should be noted that before the battery body 11 enters the unloading belt 4 for lamination, it must be ensured that the alloy platform 13 inside the machine body 1 is properly installed to prevent the battery body 11 from being unable to be processed due to other factors.

[0036] Specifically, the pressing assembly includes a second cylinder 1301 disposed on the top of the alloy platform 13, a push rod 1302 disposed at the output end of the second cylinder 1301, and a pressing plate 1303 disposed at the bottom of the push rod 1302.

[0037] In addition, the body 1 is equipped with a light source assembly, which includes a column 12 disposed inside the body 1, a slider 1201 disposed on the column 12, and a light source 1202 disposed on the slider 1201.

[0038] After the battery body 11 passes through multiple screening processes and arrives at the bottom of the film pressing assembly, the push rod 1302 and the film pressing plate 1303 at the bottom are pushed vertically along the alloy platform 13 under the drive of the second cylinder 1301. When the film pressing plate 1303 moves toward the battery body 11, the film on the surface of the battery body 11 is flattened. During the flattening process, the air content inside the film can be effectively reduced, thereby improving the efficiency of the battery body 11 coating.

[0039] In use, the column 12 stands upright inside the machine body 1. The height of the slider 1201 along the column 12 is adjusted according to actual lighting requirements, and the slider is fixed with bolts or other fasteners. Two light sources 1202 can be symmetrically distributed along the slider, so that both light sources are positioned above the lithium battery to provide illumination for the entire process. The light source 2 can be used to observe whether there are holes on the membrane. If a hole is found, the battery body 11 can be transferred to the defective belt 3 and removed from the machine body 1.

[0040] Furthermore, the body 1 is provided with a sliding assembly, which includes a linear motor 501 disposed on the side wall of the body 1, a hanging plate 5 disposed on the moving end of the linear motor, a sliding plate 6 fixedly disposed on the side wall of the hanging plate 5, and a number of adsorption assemblies disposed on the sliding plate 6.

[0041] Specifically, the adsorption assembly includes a first support frame 601 disposed on the sliding plate 6, a dispersion frame 602 disposed on the first support frame 601, and a plurality of suction nozzles 7 disposed at the bottom of the dispersion frame 602.

[0042] To ensure the orderly transport of the battery body 11 within the machine body 1, the adsorption components are spaced apart along the length of the sliding plate during operation. When the battery body 11 enters the machine body 1 from the feeding belt 2, the linear motor 501 drives the sliding plate to move above the battery body 11. At this time, the barcode scanner 603 scans the product quality. If the product is qualified, the dispersing frame and suction nozzle 7 in the adsorption components grip the battery body 11 and transfer it to the glass platform. If the product is unqualified, the dispersing frame and suction nozzle 7 in the adsorption components grip the battery body 11 and transfer it to the defective belt 3. Specifically, when gripping the battery, the first support frame 601 aligns the dispersing frame 602 on the side wall with the battery body 11 and presses the surrounding suction nozzles 7 against the battery body 11. Using existing suction nozzle adsorption technology, the battery body 11 is fixed to the dispersing frame 602. Then, with the cooperation of the sliding plate 6 and the first support frame 601, the transport of the battery body 11 is completed.

[0043] As a preferred technical solution in this embodiment, in order to inspect the quality of the battery body 11, the sliding plate 6 is provided with a barcode scanner 603 for scanning the battery body 11, and the machine body 1 is provided with a glass platform 8 for inspecting the battery body 11. The machine body 1 is provided with a defective belt 3 for discharging unqualified battery bodies 11, and the sliding plate 6 is provided with a second support frame 604 for processing the battery body 11.

[0044] After the battery body 11 enters the machine body 1 from the feeding belt 2, it is first scanned by the barcode scanner 603 to ensure that the current battery body 11 meets the current processing requirements. After the battery body 11 passes the barcode scanner 603 scan, it will enter the glass platform 8 hanging on the machine body 1. The glass platform 8 serves to process and transfer the battery body 11. The existing processing technology can be used to clean the surface of the battery body 11 and open the slots to ensure that the film is not misaligned on the battery body 11.

[0045] In addition, the body 1 is also provided with a pushing assembly, which includes a first cylinder 9 fixedly installed on the side wall of the sliding plate 6 and a third support frame 10 installed on the sliding plate 6;

[0046] To ensure that the battery body 11 can quickly enter the defective belt 3, the first cylinder 9 can quickly push the battery body 11 on the third support frame 10 to the top of the defective belt 3, so as to prevent the defective battery body 11 from lowering the properly coated battery body 11.

[0047] In some embodiments, the alloy platform 13 is provided with a conveying assembly, which includes a first film roll 14 symmetrically arranged on the alloy platform 13, a second film roll 15 arranged on the alloy platform 13, and a plurality of conveying rolls 1304 arranged at the bottom of the alloy platform 13.

[0048] Meanwhile, the side wall of the alloy platform 13 is also provided with a clamping assembly, which includes a clamping cylinder 131 fixed to the side wall of the alloy platform and a clamping block 132 disposed at the output end of the clamping cylinder and capable of relative movement.

[0049] In use, the film to be coated on the surface of the battery body 11 is placed on the external film roller. The end of the film away from the film roller passes over the first film roller 14, the second film roller 15 and the conveyor roller 1304, and is finally placed in the two clamping blocks 132 of the clamping cylinder 131. During operation, the battery body 11 enters below the conveying assembly. The clamping blocks 132 clamp the end of the film and pull the film along the first film roller 14, the second film roller 15 and the conveyor roller 1304. At this time, the second cylinder 1301 drives the pressing plate 1303 to move closer to the battery body, so that the film is finally attached to the surface of the battery body 11. Then, the film placed on the battery body 11 can be melted off from the surrounding film by the hot melting mechanism set at the bottom of the pressing assembly. In this way, a film layer can be formed on the surface of the battery body without affecting the film's continued conveying along the conveying assembly. It should be noted that the hot-melt mechanism in this embodiment is a device for melting membrane materials in the prior art. It can be set below the pressure plate 1303 according to the shape of the battery body 11. When the pressure plate 1303 presses the membrane to release it from the battery body 11, the hot-melt mechanism can cut the membrane to achieve the effect of separating the membrane from the surrounding membrane after it is attached. Since this device is prior art, it will not be described in detail here.

[0050] It should be noted that a winding film roller can also be connected to the end of the film body away from the clamping block 132. During use, the film body after pressing can be wound around the winding film roller to achieve recycling and winding.

[0051] The working principle of this utility model is as follows:

[0052] When it is necessary to apply a film to the battery body 11, the stacked battery bodies 11 are placed on the feeding belt 2 and enter the machine body 1 in an orderly manner. With the cooperation of the first support frame 601 and multiple suction nozzles 7, the battery bodies 11 complete the adsorption work. During the adsorption work, the barcode scanner 603 fixed on one side of the sliding plate 6 will scan them to ensure that each battery body 11 can be applied. When the barcode scanner 603 scans out the battery body 11 that does not meet the processing requirements, the battery body 11 will be transferred to the defective belt 3 under the action of the sliding plate 6 and discharged from the machine body 1 for manual removal by the staff. The qualified battery bodies 11 will be sent to the glass platform 8 for simple cleaning and repair. After that, the battery body 11 enters the film pressing assembly. Under the action of the second cylinder 1301, the film pressing plate 1303 will press down on the film on the top of the battery body 11 to press the film firmly onto the battery surface. Then the battery body 11 with the film pressed is discharged from the unloading belt 4.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A film applicator for batteries, comprising a body (1), characterized in that, Also includes: Feeding belt (2), which is set at the feed end of the machine body (1); Feeding belt (4), the feeding belt is set at the discharge end of the machine body (1); Alloy platform (13), which is disposed inside the body (1); as well as The pressure film assembly includes a second cylinder (1301) disposed on the top of the alloy platform (13), a push rod (1302) disposed at the output end of the second cylinder (1301), and a pressure film plate (1303) disposed at the bottom of the push rod (1302).

2. The film sticking machine for battery according to claim 1, characterized in that, The alloy platform (13) is provided with a conveying assembly, which includes a first film roll (14) symmetrically arranged on the top of the alloy platform (13), a second film roll (15) arranged on the side wall of the alloy platform (13), and a plurality of conveying rollers (1304) arranged at the bottom of the alloy platform (13).

3. The film sticking machine for battery according to claim 2, characterized in that, The alloy platform (13) is also provided with a clamping assembly on its side wall. The clamping assembly includes a clamping cylinder (131) fixed to the side wall of the alloy platform and a clamping block (132) disposed at the output end of the clamping cylinder and capable of relative movement.

4. The film sticking machine for battery according to claim 1, characterized in that, The body (1) is provided with a light source assembly, which includes a column (12) disposed inside the body (1), a slider (1201) disposed on the column (12), and a light source (1202) disposed on the slider (1201).

5. The film sticking machine for battery according to claim 1, characterized in that, The body (1) is provided with a sliding assembly, which includes a linear motor (501) disposed on the side wall of the body, a hanging plate (5) disposed on the moving end of the linear motor, a sliding plate (6) fixedly disposed on the side wall of the hanging plate, and a number of adsorption components disposed on the sliding plate (6).

6. The film sticking machine for battery according to claim 5, characterized in that, The adsorption assembly includes a first support frame (601) disposed on a sliding plate (6), a dispersing frame (602) disposed on the first support frame (601), and a plurality of suction nozzles (7) disposed at the bottom of the dispersing frame (602).

7. The film sticking machine for battery according to claim 5, characterized in that, The sliding plate (6) is equipped with a barcode scanner (603) for scanning the battery body (11), the machine body (1) is equipped with a glass platform (8) for detecting the battery body (11), the machine body (1) is also equipped with a defective belt (3) for discharging unqualified battery bodies (11), and the sliding plate (6) is equipped with a second support frame (604) for processing the battery body (11).

8. The film laminating machine for a battery according to claim 1, wherein The body (1) is provided with a pushing assembly, which includes a first cylinder (9) disposed on the side wall of the sliding plate (6) and a third support frame (10) slidably disposed on the sliding plate (6). The output end of the first cylinder (9) is fixedly connected to the third support frame (10).

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