A processing method for lithium battery tab glue

Abstract

The present invention provides a processing method for lithium battery tab glue, which relates to the technical field of lithium batteries and includes the following steps: preparing a PEN layer and a PP layer by using a co-extrusion molding process; mixing rubber, a flame retardant, a curing agent, an ion capture agent, an accelerator, graphene and a resin to obtain a semi-finished adhesive, and filtering the dispersed semi-finished adhesive through a filter screen with a size of 5-10 microns to obtain a finished adhesive; coating the finished adhesive on the surface of the PEN layer and drying to obtain an adhesive layer; laminating the PP layer on the surface of the adhesive layer away from the PEN layer and curing to obtain a tab glue colloid. In the present invention, filtering the dispersed semi-finished adhesive through a filter screen with a size of 5-10 microns can remove impurities in the semi-finished adhesive, improve the quality of the finished adhesive, improve the bonding effect of the tab glue colloid, reduce the defective rate of tabs, and improve the electrolyte resistance and penetration resistance of the tab glue colloid.

Description

Technical Field

[0001] The present invention relates to the technical field of soft-pack lithium batteries, and particularly to a processing method for lithium battery tab glue. Background Art

[0002] Tab glue is the insulated part on the tab. Its function is to prevent short circuit between the metal strip and the aluminum-plastic film during battery encapsulation, and during encapsulation, it is heat-sealed and bonded with the aluminum-plastic film through heating to prevent liquid leakage. Since the tab glue needs to be in long-term contact with the electrolyte inside the battery, therefore, the tab glue needs to have electrolyte resistance performance and certain tolerance to solvents and acids.

[0003] During the production process of tab glue, adhesives need to be used for bonding. However, in the existing processing of tab glue, it is easy for the adhesives to be mixed with more impurities. The impurities will affect the quality of the adhesives, the bonding effect of the tab glue becomes poor, the rejection rate of the tabs increases, and the electrolyte resistance performance and permeation resistance performance of the tabs are reduced. Summary of the Invention

[0004] The present invention provides a processing method for lithium battery tab glue to solve the technical problem that in the existing processing of tab glue, it is easy for the adhesives to be mixed with more impurities and the bonding effect of the tab glue becomes poor.

[0005] To solve the above technical problem, the present invention discloses a processing method for lithium battery tab glue, including the following steps:

[0006] Step 1: Prepare a PEN layer and a PP layer respectively by using a co-extrusion molding process;

[0007] Step 2: Mix rubber, flame retardant, curing agent, ion scavenger, accelerator, graphene and resin to obtain a semi-finished adhesive. Add the semi-finished adhesive to a high-speed disperser for dispersion. After the dispersion is completed, filter the dispersed semi-finished adhesive through a 5 - 10 micron filter screen to obtain a finished adhesive;

[0008] Step 3: Coat the surface of the PEN layer with the finished adhesive, and dry it to obtain an adhesive layer;

[0009] Step 4: Compound the PP layer on the surface of the adhesive layer away from the PEN layer, and cure it to obtain a tab glue colloid.

[0010] Preferably, in Step 1, the PEN layer is made of PEN material, and the PP layer is made of 140°C soluble PP material.

[0011] Preferably, the finished adhesive includes, by weight percentage: 20 - 40% of rubber, 5 - 10% of flame retardant, 3 - 5% of curing agent, 0.05 - 0.1% of ion scavenger, 3 - 5% of accelerator, 1 - 5% of graphene, and 30 - 60% of resin.

[0012] Preferably, in step 2, the dispersion duration of the high-speed disperser is 3 - 10 h, the rotation speed of the high-speed disperser is 800 - 120 r / min, a constant-temperature water bath is arranged on the high-speed disperser, and during the dispersion process, the dispersion temperature is controlled at 25 - 30 °C through the constant-temperature water bath.

[0013] Preferably, in step 4, after the tab glue colloid is prepared, the tab glue colloid is slit and its performance is detected. The performance detection includes: detecting the thickness of the PEN layer, detecting the thickness of the PP layer, detecting the thickness of the adhesive layer, detecting the total thickness of the tab glue colloid, detecting the peel strength of the PP layer, and soaking the tab glue colloid in the battery electrolyte to detect whether the tab glue colloid is delaminated.

[0014] Preferably, in step 2, first, rubber, flame retardant, curing agent, ion scavenger, accelerator, graphene, and resin are mixed through a mixing device. The mixing device includes a mixing tank. A plurality of first support legs are arranged at the bottom of the mixing tank. A stirring motor is arranged at the center of the bottom of the mixing tank. A stirring shaft is arranged at the output end of the stirring motor. The upper end of the stirring shaft penetrates through the bottom wall of the mixing tank and extends into the mixing tank, and a plurality of stirring blades are arranged. The stirring blades are perpendicular to the stirring shaft. The position where the stirring shaft penetrates through the bottom wall of the mixing tank is in sealed rotational connection. A mixing inlet is arranged on one side wall at the upper end of the mixing tank. A protective door is arranged at the mixing inlet. A mixing output pipe is arranged on the side wall at the lower end of the mixing tank. The mixing output pipe is communicated with the inside of the mixing tank. A feeding assembly is arranged in the mixing tank, and the feeding assembly is used for feeding materials into the mixing tank.

[0015] Preferably, the feeding assembly includes: a fixed shaft, which is fixedly connected to the center position of the inner wall of the top of the mixing tank. A first gear is fixedly arranged at the lower end of the fixed shaft. A rotating cylinder is rotatably sleeved on the fixed shaft. A mounting plate is fixedly arranged on the outer wall of the rotating cylinder. A feeding tank is arranged at one end of the mounting plate away from the rotating cylinder. A feeding port is arranged at the upper end of the feeding tank. A feeding pipe is communicated at the bottom of the feeding tank. The lower end of the feeding pipe is communicated with a transfer pipe. The lower end of the transfer pipe is communicated with the inside of the mixing tank through a blanking port. The transfer pipe is cylindrical. A rotating column is horizontally arranged in the transfer pipe. The front and rear ends of the rotating column are rotatably connected to the front and rear side walls of the transfer pipe through first rotating shafts. A placing groove is arranged on the outer wall of the rotating column along the axial direction of the rotating column. The rear end of the first rotating shaft located at the rear extends to the outside of the transfer pipe and is provided with a first sprocket. A first motor is arranged on the lower surface of the mounting plate. A second gear is arranged at the output end of the first motor. The second gear is a semi-circular gear, and the second gear is intermittently engaged with the first gear. A driving assembly is arranged between the first motor and the feeding tank, and the driving assembly is used for driving the first sprocket to rotate. A vertical pipe is fixedly arranged on the upper surface of the mounting plate. A first spring is arranged in the vertical pipe. The lower end of the first spring is fixedly connected to the inner wall of the vertical pipe. The upper end of the first spring is provided with a clamping column. The clamping column is slidably connected to the inner wall of the vertical pipe. The upper end of the clamping column is provided as a hemispherical body and is adapted to a clamping groove. A plurality of clamping grooves are arranged in an annular array centered on the center of the inner wall of the top of the mixing tank on the inner wall of the top of the mixing tank.

[0016] Preferably, the driving assembly includes: two fixed plates disposed between the first motor and the feeding tank, the upper ends of the fixed plates are fixedly connected to the lower surface of the mounting plate, a sliding rod is disposed between the two fixed plates, the front and rear ends of the sliding rod respectively penetrate through the front and rear fixed plates and are slidably connected to the penetration positions of the fixed plates, baffles are fixedly provided at the front and rear ends of the sliding rod, a second spring is disposed between the baffle and the fixed plate, one end of the second spring is fixedly connected to the side wall of the baffle, and the other end of the second spring is fixedly connected to the side wall of the fixed plate. First racks are provided on the left and right sides of the sliding rod, a second rotating shaft is disposed between the fixed plate and the first motor, the upper end of the second rotating shaft is rotatably connected to the lower surface of the mounting plate, a third gear is provided at the lower end of the second rotating shaft, the third gear is intermittently engaged with the second gear, the third gear is engaged with the first rack close to the first motor, a support plate is disposed between the fixed plate and the feeding tank, the upper end of the support plate is fixedly connected to the lower surface of the mounting plate, a third rotating shaft is rotatably provided at the front end of the support plate, a first bevel gear and a second sprocket are sequentially provided on the third rotating shaft from front to back, the second sprocket is drivingly connected to the first sprocket through a chain, a fourth rotating shaft is disposed in front of the support plate, the upper end of the fourth rotating shaft is rotatably connected to the lower surface of the mounting plate, a fourth gear and a second bevel gear are sequentially provided on the fourth rotating shaft from top to bottom, the second bevel gear is engaged with the first bevel gear, and the fourth gear is engaged with the first rack close to the feeding tank.

[0017] Preferably, in step 2, the filter screen is disposed in the filtering device, and the filtering device includes: a filtering box, a filtering inlet is provided at the upper end of the filtering box, a filtering outlet is provided at the lower end of the filtering box, a plurality of second support legs are provided at the bottom of the filtering box, sliding grooves are provided at positions close to the middle on the inner walls of the left and right sides of the filtering box, an installation opening is provided on the front side wall of the filtering box, the installation opening is communicated with the sliding groove, an installation frame body is slidably disposed between the two sliding grooves, a handle is provided at the front end of the installation frame body, the filter screen is horizontally disposed in the installation frame body through an installation component, a first channel is provided inside the front end of the installation frame body, the first channel is communicated with the sliding groove through a first through hole, a bidirectional electric push rod is provided at the center of the first channel, a telescopic shaft is provided at the output end of the bidirectional electric push rod, a pushing block is provided at the end of the telescopic shaft away from the bidirectional electric push rod, an installation groove is provided on the side of the sliding groove away from the first channel, the installation groove is communicated with the sliding groove, a clamping block is slidably disposed in the installation groove, the cross section of the clamping block is in the shape of a right trapezoid, an inclined surface is provided on the front end of the clamping block close to the installation opening side, a third spring is provided in the installation groove, one end of the third spring is fixedly connected to the inner wall of the installation groove, and the other end of the third spring is fixedly connected to the clamping block.

[0018] Preferably, the installation component includes a second channel. The two second channels are symmetrically arranged on the left and right sides of the installation frame body. The two second channels are located on the horizontal plates on the left and right sides of the filter net. The front end of the second channel is communicated with the first channel. Two horizontal plates are arranged on both the left and right sides of the filter net. The two horizontal plates are respectively arranged on the upper and lower sides of the filter net. The horizontal plates are slidably connected to the installation frame body through second through holes. The second through holes are communicated with the second channel. A second rack is arranged at one end of the horizontal plate away from the filter net. A third rack is arranged on one side of the push block close to the second channel. The upper and lower sides of the third rack are toothed. The third rack extends between the two second racks. A fifth rotating shaft is arranged between the third rack and the second rack. The fifth rotating shaft is rotatably connected to the rear side wall of the second channel. A fifth gear is arranged on the fifth rotating shaft. The fifth gear is respectively meshed with the third rack and the second rack.

[0019] The technical solution of the present invention has the following advantages: The present invention provides a method for processing lithium battery tab glue, which relates to the technical field of lithium batteries and includes the following steps: preparing a PEN layer and a PP layer by a co-extrusion molding process; mixing rubber, a flame retardant, a curing agent, an ion scavenger, an accelerator, graphene and a resin to obtain a semi-finished adhesive, adding the semi-finished adhesive to a high-speed disperser for dispersion, and filtering the dispersed semi-finished adhesive with a filter net of 5-10 microns to obtain a finished adhesive; coating the finished adhesive on the surface of the PEN layer and drying to obtain an adhesive layer; laminating the PP layer on the surface of the adhesive layer away from the PEN layer and curing to obtain a tab glue colloid. In the present invention, filtering the dispersed semi-finished adhesive with a filter net of 5-10 microns can remove impurities in the semi-finished adhesive, improve the quality of the finished adhesive, improve the bonding effect of the tab glue colloid, reduce the rejection rate of tabs, and improve the electrolyte resistance and penetration resistance of the tab glue colloid.

[0020] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the devices specifically pointed out in the written specification and the drawings of the specification.

[0021] The following will further describe the technical solution of the present invention in detail through the drawings and embodiments. Description of the Drawings

[0022] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation to the present invention. In the drawings:

[0023] Figure 1 is a flow chart of a method for processing lithium battery tab glue according to the present invention;

[0024] Figure 2Schematic diagram of the overall structure of the mixing device in the present invention;

[0025] Figure 3 For the present invention Figure 2 Enlarged view of part A in;

[0026] Figure 4 For the present invention Figure 3 Partial cross-sectional view taken along line B-B in;

[0027] Figure 5 For the present invention Figure 2 Enlarged view of part C in;

[0028] Figure 6 For the present invention Figure 2 Enlarged view of part D in;

[0029] Figure 7 Schematic diagram of the overall structure of the filtering device in the present invention;

[0030] Figure 8 For the present invention Figure 7 Enlarged view of part E in;

[0031] Figure 9 For the present invention Figure 7 Partial cross-sectional view taken along line F-F in;

[0032] Figure 10 For the present invention Figure 9 Partial cross-sectional view taken along line G-G in;

[0033] Figure 11 For the present invention Figure 9 Enlarged view of part H in.

[0034] In the figure: 1, filter screen; 2, mixing tank; 3, first support leg; 4, stirring motor; 5, stirring shaft; 6, stirring blade; 7, mixing output pipe; 8, fixed shaft; 9, first gear; 10, rotating drum; 11, mounting plate; 12, feeding tank; 14, feeding pipe; 15, transfer pipe; 16, blanking port; 17, rotating column; 18, first rotating shaft; 19, first sprocket; 20, placement groove; 21, first motor; 22, second gear; 23, vertical pipe; 24, first spring; 25, clamping column; 26, clamping groove; 27, fixing plate; 28, sliding rod; 29, baffle; 30, second spring; 31, first rack; 32, second rotating shaft; 33, third gear; 34, support plate; 35, third rotating shaft; 36, first bevel gear; 37, second sprocket; 38, chain; 39, fourth rotating shaft; 40, fourth gear; 41, second bevel gear; 42, filter box; 43, filter inlet; 44, filter outlet; 45, second support leg; 46, sliding groove; 47, mounting frame; 48, handle; 49, first channel; 50, first through hole; 51, bidirectional electric push rod; 52, telescopic shaft; 53, push block; 54, mounting groove; 55, clamping block; 56, third spring; 57, second channel; 58, cross plate; 59, second through hole; 60, second rack; 61, third rack; 62, fifth rotating shaft; 63, fifth gear. Detailed implementation mode

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0036] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] Embodiment 1:

[0038] The embodiment of the present invention provides a method for processing lithium battery tab glue, as Figure 1 shown, including the following steps:

[0039] Step 1: Prepare the PEN layer and the PP layer respectively by using a coextrusion molding process;

[0040] Step 2: Mix rubber, flame retardant, curing agent, ion scavenger, accelerator, graphene and resin to obtain a semi-finished adhesive. Add the semi-finished adhesive to a high-speed disperser for dispersion. After the dispersion is completed, filter the dispersed semi-finished adhesive with a filter screen 1 with a size of 5-10 microns to obtain a finished adhesive;

[0041] Step 3: Coat the surface of the PEN layer with the finished adhesive and dry it to obtain an adhesive layer;

[0042] Step 4: Laminate the PP layer on the surface of the adhesive layer away from the PEN layer and cure it to obtain an ear tab glue colloid.

[0043] The working principle and beneficial effects of the above technical solution are as follows: First, the PEN layer and the PP layer are respectively prepared by a co-extrusion molding process. After the PEN layer and the PP layer are prepared, they are respectively wound up for standby. Then, mix rubber, flame retardant, curing agent, ion scavenger, accelerator, graphene and resin to obtain a semi-finished adhesive. Add the semi-finished adhesive to a high-speed disperser for dispersion. After the dispersion is completed, filter the dispersed semi-finished adhesive with a filter screen 1 with a size of 5-10 microns to obtain a finished adhesive. Then, coat the surface of the PEN layer with the finished adhesive and dry it to obtain an adhesive layer. Laminate the PP layer on the surface of the adhesive layer away from the PEN layer and cure it to obtain an ear tab glue colloid. Adhesive layers are provided on both the upper and lower sides of the PEN layer. During preparation, first apply a first-side adhesive layer on one side of the PEN layer. After the first-side adhesive layer is dried, laminate the PP layer on the surface of the adhesive layer by a hot pressing method. After curing, apply a second-side adhesive layer on the other side of the PEN layer. After drying the second-side adhesive layer, laminate the PP layer on the adhesive layer by a hot pressing method to finally form an ear tab glue colloid. The hot pressing temperature is set to 85°C. In the present invention, filtering the dispersed semi-finished adhesive with a filter screen 1 with a size of 5-10 microns can remove impurities in the semi-finished adhesive, improve the quality of the finished adhesive, improve the bonding effect of the ear tab glue colloid, reduce the unqualified rate of ear tabs, and improve the electrolyte resistance and penetration resistance of the ear tab glue colloid.

[0044] Example 2

[0045] On the basis of the above Example 1, in Step 1, the PEN layer is made of PEN material, and the PP layer is made of 140°C soluble PP material;

[0046] The finished adhesive includes, by weight percentage: 20-40% of rubber, 5-10% of flame retardant, 3-5% of curing agent, 0.05-0.1% of ion scavenger, 3-5% of accelerator, 1-5% of graphene and 30-60% of resin.

[0047] The working principle and beneficial effects of the above technical solution are as follows: The PEN layer is made of PEN material, which is polyethylene naphthalate material. The PP layer is made of PP material soluble at 140°C, and the PP material is polypropylene material. The finished adhesive includes, by weight percentage: 20-40% rubber, 5-10% flame retardant, 3-5% curing agent, 0.05-0.1% ion scavenger, 3-5% accelerator, 1-5% graphene, and 30-60% resin. The finished adhesive prepared with the above ratio has a relatively strong bonding force, which can improve the bonding effect between the PP layer and the PEN layer, thereby improving the quality of the tab glue colloid.

[0048] Example 3

[0049] On the basis of Example 1 or 2, in Step 2, the dispersion time of the high-speed disperser is 3-10 h, the rotation speed of the high-speed disperser is 800-120 r / min, a constant temperature water bath is set on the high-speed disperser, and the dispersion temperature is controlled at 25-30°C through the constant temperature water bath during the dispersion process.

[0050] The working principle and beneficial effects of the above technical solution are as follows: The dispersion time of the high-speed disperser is 3-10 h, which can fully disperse the adhesive semi-finished product, making the various components of the adhesive semi-finished product evenly mixed, improving the bonding performance of the finished adhesive. The constant temperature water bath set on the high-speed disperser can cool down the high-speed disperser, avoiding the overheating of the high-speed disperser and being beneficial to the long-term operation of the high-speed disperser.

[0051] Example 4

[0052] On the basis of any one of Examples 1-3, in Step 4, after the tab glue colloid is prepared, it is slit and subjected to performance testing. The performance testing includes: detecting the thickness of the PEN layer, detecting the thickness of the PP layer, detecting the thickness of the adhesive layer, detecting the total thickness of the tab glue colloid, detecting the peel strength of the PP layer, and immersing the tab glue colloid in the battery electrolyte to detect whether the tab glue colloid is delaminated.

[0053] The working principle and beneficial effects of the above technical solution are as follows: After the tab glue colloid is made, the tab glue colloid is cut and corresponding performance tests are carried out. The performance tests include: detecting the thickness of the PEN layer, detecting the thickness of the PP layer, detecting the thickness of the adhesive layer, detecting the total thickness of the tab glue colloid, using a tensile machine to detect the peel strength of the PP layer, and immersing the tab glue colloid in the battery electrolyte to detect whether the tab glue colloid is delaminated. Specifically, the thickness of the PEN layer is required to be within the range of 12 ± 1 μm, the thickness of the adhesive layer is required to be within the range of 13 ± 1 μm, the thickness of the PP layer is required to be within the range of 30 ± 1 μm, the total thickness of the tab glue colloid is required to be within the range of 100 ± 3 μm, the peel strength of the PP layer is required to be greater than 10 N / mm, and the tab glue colloid is considered qualified if there is no delamination after being immersed in the battery electrolyte for 4 hours, otherwise it is unqualified. Through the above performance tests, the tab glue colloid that does not meet the performance test requirements can be removed, thus ensuring the product quality of the tab glue colloid and meeting the user's needs.

[0054] Example 5

[0055] On the basis of any one of Examples 1 - 4, as Figures 2 - 6 shown, in Step 2, first, rubber, flame retardant, curing agent, ion capturer, accelerator, graphene, and resin are mixed by a mixing device. The mixing device includes a mixing tank 2. A plurality of first support legs 3 are provided at the bottom of the mixing tank 2. A stirring motor 4 is provided at the center position of the bottom of the mixing tank 2. The output end of the stirring motor 4 is provided with a stirring shaft 5. The upper end of the stirring shaft 5 penetrates the bottom wall of the mixing tank 2, extends into the interior of the mixing tank 2, and is provided with a plurality of stirring blades 6. The stirring blades 6 are perpendicular to the stirring shaft 5. The stirring shaft 5 is in sealed rotational connection with the position where it penetrates the bottom wall of the mixing tank 2. A mixing inlet is provided on one side wall at the upper end of the mixing tank 2, and a protective door is provided at the mixing inlet. A mixing output pipe 7 is provided on the side wall at the lower end of the mixing tank 2, and the mixing output pipe 7 is communicated with the interior of the mixing tank 2. A feeding assembly is provided in the mixing tank 2 for feeding materials into the mixing tank 2.

[0056] The working principle and beneficial effects of the above technical solution are as follows: Open the protective door, put rubber, flame retardant, curing agent, ion capturer, accelerator, graphene and resin into the feeding assembly through the mixing inlet, then close the protective door, start the stirring motor 4, the rotation of the stirring motor 4 drives the rotation of the stirring shaft 5, and the rotation of the stirring shaft 5 drives the rotation of the stirring blades 6. The feeding assembly can evenly put rubber, flame retardant, curing agent, ion capturer, accelerator, graphene and resin into the mixing tank 2, and then fully mix them after being stirred by the stirring blades 6. The mixed rubber, flame retardant, curing agent, ion capturer, accelerator, graphene and resin can be discharged to the high-speed disperser through the mixing output pipe 7, and are dispersed at high speed by the high-speed disperser. Using the mixing device to mix rubber, flame retardant, curing agent, ion capturer, accelerator, graphene and resin before dispersion can preliminarily mix the raw materials, which is beneficial to the subsequent high-speed dispersion, can reduce the dispersion time of the high-speed disperser, improve the dispersion efficiency, and reduce the processing cost. Moreover, the feeding assembly is arranged inside the mixing tank 2, and no external impurities will be mixed into the mixing tank 2 during the feeding process, thereby improving the quality of the raw materials of rubber, flame retardant, curing agent, ion capturer, accelerator, graphene and resin, reducing the impurities in the semi-finished adhesive, ensuring the quality of the finished adhesive, improving the bonding effect of the tab glue colloid, and being beneficial to improving the electrolyte resistance and penetration resistance of the tab glue colloid. Also, since the impurities in the semi-finished adhesive are reduced, the impurities removed by the filter screen 1 are also correspondingly reduced, thereby prolonging the service life of the filter screen 1.

[0057] Example 6

[0058] On the basis of Example 5, as Figures 2 - 6As shown in the figure, the feeding assembly includes: a fixed shaft 8, which is fixedly connected to the center position of the inner wall of the top of the mixing tank 2. A first gear 9 is fixedly arranged at the lower end of the fixed shaft 8. A rotating cylinder 10 is rotatably sleeved on the fixed shaft 8. An installation plate 11 is fixedly arranged on the outer wall of the rotating cylinder 10. A feeding box 12 is arranged at one end of the installation plate 11 away from the rotating cylinder 10. A feeding port is arranged at the upper end of the feeding box 12. A feeding pipe 14 is communicated with the bottom of the feeding box 12. The lower end of the feeding pipe 14 is communicated with a transfer pipe 15. The lower end of the transfer pipe 15 is communicated with the inside of the mixing tank 2 through a blanking port 16. The transfer pipe 15 is cylindrical. A rotating column 17 is horizontally arranged in the transfer pipe 15. The front and rear ends of the rotating column 17 are rotatably connected to the front and rear side walls of the transfer pipe 15 through a first rotating shaft 18. A placing groove 20 is arranged on the outer wall of the rotating column 17 along the axial direction of the rotating column 17. The rear end of the first rotating shaft 18 located at the rear extends to the outside of the transfer pipe 15 and is provided with a first sprocket 19. A first motor 21 is arranged on the lower surface of the installation plate 11. A second gear 22 is arranged at the output end of the first motor 21. The second gear 22 is a semi-circular gear, and the second gear 22 is intermittently engaged with the first gear 9. A driving assembly is arranged between the first motor 21 and the feeding box 12, and the driving assembly is used to drive the first sprocket 19 to rotate. A vertical pipe 23 is fixedly arranged on the upper surface of the installation plate 11. A first spring 24 is arranged in the vertical pipe 23. The lower end of the first spring 24 is fixedly connected to the inner wall of the vertical pipe 23. A clamping column 25 is arranged at the upper end of the first spring 24. The clamping column 25 is slidably connected to the inner wall of the vertical pipe 23. The upper end of the clamping column 25 is a hemisphere and is adapted to a clamping groove 26. A plurality of clamping grooves 26 are arranged, and the plurality of clamping grooves 26 are annularly arranged on the inner wall of the top of the mixing tank 2 with the center of the inner wall of the top of the mixing tank 2 as the center of the circle.

[0059] The working principle and beneficial effects of the above technical solution are as follows: When the feeding assembly feeds materials, the first motor 21 is controlled to start. When the first motor 21 starts, it drives the second gear 22 to rotate. When the second gear 22 rotates, it can intermittently mesh with the first gear 9. When the second gear 22 meshes with the first gear 9, the first gear 9 is fixedly connected to the fixed shaft 8. Therefore, when the second gear 22 rotates, it can drive the mounting plate 11 to rotate around the fixed shaft 8. The mounting plate 11 drives the rotating cylinder 10 to rotate on the fixed shaft 8, and the clamping column 25 is separated from the clamping groove 26 provided on the inner wall of the top of the mixing tank 2. When the meshing between the second gear 22 and the first gear 9 ends, the clamping column 25 is reinserted into the next clamping groove 26. At this time, the mounting plate 11 stops rotating. During the process of the mounting plate 11 stopping rotating, the driving assembly can drive the first sprocket 19 to rotate. When the first sprocket 19 rotates, it can drive the rotating column 17 to rotate through the first rotating shaft 18. The placement groove 20 of the rotating column 17 is communicated with the feeding pipe 14, and the raw materials in the feeding tank 12 fall into the placement groove 20 through the feeding pipe 14. When the mounting plate 11 rotates, the driving assembly drives the first sprocket 19 to rotate quickly in the reverse direction. The rotating column 17 rotates in the reverse direction in the transfer pipe 15, and the placement groove 20 quickly rotates to be communicated with the blanking port 16. The raw materials in the placement groove 20 can fall into the mixing tank 2 through the blanking port 16. Then, the raw materials are stirred and mixed by the stirring blades 6. By setting the feeding assembly, the raw materials can be added to the mixing tank 2 at equal intervals, providing sufficient stirring time for the stirring blades 6, avoiding the reduction of the stirring efficiency of the stirring blades 6 due to excessive raw material input, contributing to the full mixing of the raw materials. At the same time, the mounting plate 11 can drive the feeding tank 12 to rotate, thereby changing the position of the blanking port 16, enabling the raw materials to fall into the mixing tank 2 from different directions, avoiding the concentration of raw materials at a fixed position in the mixing tank 2 and the accumulation of raw materials. By changing the blanking position of the raw materials, the raw materials are input into the mixing tank 2 from multiple directions and angles, improving the uniformity of the raw materials and further enhancing the mixing effect of the raw materials. After the meshing between the second gear 22 and the first gear 9 ends, the mounting plate 11 can be controlled to stop rotating by the clamping column 25 being inserted into the clamping groove 26, avoiding excessive rotation of the mounting plate 11 due to inertia and ensuring the accuracy of the raw material input position. Since the size of the placement groove 20 is fixed, the amount of raw materials input into the mixing tank 2 each time can also be kept fixed, further ensuring the consistency of the raw materials. Finally, the quality of the adhesive finished product is guaranteed, and the bonding effect, electrolyte resistance performance, and penetration resistance performance of the tab glue colloid are improved.

[0060] Example 7

[0061] On the basis of Example 6, as Figures 2 - 6As shown, the driving assembly includes: two fixed plates 27 arranged between the first motor 21 and the charging box 12, the upper end of the fixed plate 27 is fixedly connected to the lower surface of the mounting plate 11, a sliding rod 28 is arranged between the two fixed plates 27, the front and rear ends of the sliding rod 28 respectively penetrate the fixed plates 27 on the front and rear sides and are slidably connected to the fixed plates 27 through the position, baffles 29 are fixedly arranged at the front and rear ends of the sliding rod 28, a second spring 30 is arranged between the baffle 29 and the fixed plate 27, one end of the second spring 30 is fixedly connected to the side wall of the baffle 29, and the other end of the second spring 30 is fixedly connected to the side wall of the fixed plate 27, first racks 31 are arranged on the left and right sides of the sliding rod 28, a second rotating shaft 32 is arranged between the fixed plate 27 and the first motor 21, the upper end of the second rotating shaft 32 is rotatably connected to the lower surface of the mounting plate 11, and a third gear is arranged at the lower end of the second rotating shaft 32 The third gear 33 is intermittently meshed with the second gear 22, the third gear 33 is meshed with the first rack 31 near the first motor 21, a support plate 34 is arranged between the fixed plate 27 and the charging box 12, the upper end of the support plate 34 is fixedly connected to the lower surface of the mounting plate 11, and a third rotating shaft 35 is rotatably arranged at the front end of the support plate 34, a first bevel gear 36 and a second sprocket 37 are arranged on the third rotating shaft 35 in sequence from front to back, the second sprocket 37 is transmission connected to the first sprocket 19 through a chain 38, a fourth rotating shaft 39 is arranged in front of the support plate 34, the upper end of the fourth rotating shaft 39 is rotatably connected to the lower surface of the mounting plate 11, a fourth gear 40 and a second bevel gear 41 are arranged on the fourth rotating shaft 39 in sequence from top to bottom, the second bevel gear 41 is meshed with the first bevel gear 36, and the fourth gear 40 is meshed with the first rack 31 near the charging box 12.

[0062] The working principle and beneficial effects of the above technical solution are as follows: In the initial state, the placement groove 20 is communicated with the blanking port 16. After the driving assembly is started, the second gear 22 first meshes with the third gear 33. The rotation of the second gear 22 drives the rotation of the third gear 33. The rotation of the third gear 33 drives the movement of the first rack 31 close to the first motor 21. The first rack 31 drives the sliding rod 28 to slide between the two fixing plates 27, and the length of the second spring 30 changes accordingly. At the same time, the first rack 31 close to the feeding box 12 drives the fourth gear 40 to rotate. The fourth gear 40 drives the second bevel gear 41 to rotate through the fourth rotating shaft 39. The rotation of the second bevel gear 41 drives the rotation of the first bevel gear 36. The first bevel gear 36 drives the second sprocket 37 to rotate through the third rotating shaft 35. The second sprocket 37 drives the first sprocket 19 to rotate through the chain 38. The first sprocket 19 drives the rotating column 17 to rotate in the transfer pipe 15 through the first rotating shaft 18, so that the placement groove 20 is communicated with the feeding pipe 14, and the raw material falls from the feeding box 12 into the placement groove 20. After the second gear 22 and the third gear 33 finish meshing, the mounting plate 11 starts to rotate. While the mounting plate 11 is rotating, the two second springs 30 return to their original positions under the action of elastic force, so that the first rack 31 close to the feeding box 12 drives the fourth gear 40 to rotate in the reverse direction, and the rotating column 17 rotates quickly in the reverse direction until the placement groove 20 is communicated with the blanking port 16. At this time, the raw material in the placement groove 20 can quickly fall into the mixing box 2. The driving assembly can realize the rapid and equally spaced alternating blanking of the feeding box 12. Since the rotating column 17 can quickly return to its original position, when the mounting plate 11 is rotating, the raw material in the placement groove 20 can be sprinkled into the mixing box 2 through the blanking port 16, avoiding the concentrated input of raw materials. The sprinkled raw material can be quickly mixed with the raw material in the mixing box 2, improving the mixing efficiency of the mixing device and accelerating the processing efficiency of the adhesive finished product.

[0063] Example 8

[0064] On the basis of any one of Examples 1-7, if Figures 7 - 11As shown, in step 2, the filter screen 1 is arranged in the filtering device. The filtering device includes: a filtering box 42, a filtering inlet 43 is arranged at the upper end of the filtering box 42, a filtering outlet 44 is arranged at the lower end of the filtering box 42, a plurality of second support legs 45 are arranged at the bottom of the filtering box 42, sliding grooves 46 are arranged at the inner walls of the left and right sides of the filtering box 42 near the middle position, an installation opening is arranged on the front side wall of the filtering box 42, and the installation opening is communicated with the sliding grooves 46. An installation frame body 47 is slidably arranged between the two sliding grooves 46. A handle 48 is arranged at the front end of the installation frame body 47. The filter screen 1 is horizontally arranged in the installation frame body 47 through an installation component. A first channel 49 is arranged inside the front end of the installation frame body 47. The first channel 49 is communicated with the sliding grooves 46 through first through holes 50. A bidirectional electric push rod 51 is arranged at the center of the first channel 49. A telescopic shaft 52 is arranged at the output end of the bidirectional electric push rod 51. A push block 53 is arranged at one end of the telescopic shaft 52 away from the bidirectional electric push rod 51. An installation groove 54 is arranged on the side of the sliding groove 46 away from the first channel 49. The installation groove 54 is communicated with the sliding groove 46. A clamping block 55 is slidably arranged in the installation groove 54. The cross section of the clamping block 55 is in the shape of a right trapezoid. An inclined surface is arranged on the front end of the clamping block 55 near the installation opening. A third spring 56 is arranged in the installation groove 54. One end of the third spring 56 is fixedly connected with the inner wall of the installation groove 54, and the other end of the third spring 56 is fixedly connected with the clamping block 55.

[0065] The working principle and beneficial effects of the above technical solution are as follows: To ensure the filtering environment of the filter screen 1 and avoid contamination of the filter screen 1 by external impurities during the filtering process, the filter screen 1 is arranged in the installation frame 47. The installation frame 47 is slidably installed in the filter box 42 with only a filter inlet 43 and a filter outlet 44. The semi-finished adhesive to be filtered is put into the filter box 42 through the filter inlet 43, and after being filtered by the filter screen 1, it is discharged from the filter outlet 44. During the filtering process, external impurities will not contaminate the filter screen 1, extending the service life of the filter screen 1. The installation frame 47 is in the shape of a rectangular frame. The left and right sides of the installation frame 47 are respectively slidably connected to the sliding grooves 46 on the inner walls of the left and right sides of the filter box 42. A handle 48 is arranged at the front end of the installation frame 47. By grasping the handle 48, the installation frame 47 can be installed or removed from the installation opening. When installing the installation frame 47, the installation frame 47 is placed into the filter box 42 along the sliding groove 46. After the installation frame 47 contacts the clamping block 55, the clamping block 55 is driven to slide along the installation groove 54 by the inclined surface of the clamping block 55, and the third spring 56 is compressed. After the installation of the installation frame 47 cannot be pushed anymore, the installation groove 54 and the first through hole 50 are in the same plane. At this time, under the action of the third spring 56, the clamping block 55 slides into the first through hole 50. The clamping block 55 is simultaneously located in the installation groove 54, the sliding groove 46, and the first through hole 50. At this time, pulling the handle 48 cannot remove the installation frame 47. A controller is arranged in the first channel 49. The controller is electrically connected to the bidirectional electric push rod 51. When the filter screen 1 needs to be cleaned, the controller controls the bidirectional electric push rod 51 to extend. The bidirectional electric push rod 51 drives the push block 53 to slide towards the installation groove 54 through the telescopic shaft 52. The push block 53 contacts the clamping block 55 and pushes the clamping block 55 to slide towards the installation groove 54 until the clamping block 55 is separated from the first through hole 50. At this time, the handle 48 can be pulled to remove the installation frame 47 from the installation opening, so as to clean the filter screen 1. After the cleaning is completed, the controller controls the bidirectional electric push rod 51 to retract to its original position, facilitating the rapid installation of the installation frame 47. By arranging the filter screen 1 in the sealed filter box 42 to filter the semi-finished adhesive, the cleanliness of the filtering environment can be improved, avoiding external impurities from mixing and adhering to the filter screen 1 during the filtering process and causing blockage of the filter screen 1, ensuring the service life of the filter screen 1. At the same time, the installation frame 47 is firmly installed under the fixation of the clamping block 55, avoiding the random removal of the installation frame 47 during the filtering process and affecting the filtering quality. By controlling the bidirectional electric push rod 51 to push through the controller, the clamping block 55 can be separated from the first through hole 50, facilitating the rapid disassembly of the installation frame 47 and being beneficial to the rapid cleaning of the filter screen 1, saving the disassembly and installation time.

[0066] Example 9

[0067] Based on Example 8, as Figure 10 、 Figure 11As shown, the installation component includes a second channel 57. The two second channels 57 are symmetrically arranged on the left and right sides of the installation frame 47. The two second channels 57 are located on the left and right horizontal plates 58 of the filter net 1. The front end of the second channel 57 is communicated with the first channel 49. Two horizontal plates 58 are arranged on both the left and right sides of the filter net 1. The two horizontal plates 58 are respectively arranged on the upper and lower sides of the filter net 1. The horizontal plate 58 is slidably connected with the installation frame 47 through a second through hole 59. The second through hole 59 is communicated with the second channel 57. A second rack 60 is arranged at one end of the horizontal plate 58 away from the filter net 1. A third rack 61 is arranged on one side of the push block 53 close to the second channel 57. The upper and lower sides of the third rack 61 are toothed. The third rack 61 extends between the two second racks 60. A fifth rotating shaft 62 is arranged between the third rack 61 and the second rack 60. The fifth rotating shaft 62 is rotatably connected with the rear side wall of the second channel 57. A fifth gear 63 is arranged on the fifth rotating shaft 62. The fifth gear 63 is respectively meshed with the third rack 61 and the second rack 60.

[0068] The working principle and beneficial effects of the above technical solution are as follows: When the filter net 1 is damaged and needs to be replaced, start the bidirectional electric push rod 51, so that the bidirectional electric push rod 51 continues to retract. The push block 53 slides away from the first through hole 50. The push block 53 drives the third rack 61 to move towards the second through hole 59. The third rack 61 drives the fifth gear 63 to rotate. The fifth gear 63 drives the second racks 60 on the upper and lower sides to slide away from the filter net 1. The second rack 60 drives the horizontal plate 58 to slide into the second through hole 59. At this time, the horizontal plates 58 on the upper and lower sides of the filter net 1 are separated from the filter net 1, and the filter net 1 can be taken out of the installation frame 47. After replacing the filter net 1, put the new filter net 1 into the installation frame 47, and then control the bidirectional electric push rod 51 to return to its original position. The bidirectional electric push rod 51 drives the push block 53 to slide towards the first through hole 50, and drives the two second racks 60 to slide towards the filter net 1 through the third rack 61. The horizontal plates 58 on the upper and lower sides are re-abutted against the edges of the upper and lower side walls of the filter net 1. At this time, the installation of the filter net 1 is completed. By setting the installation component, it is beneficial to the quick disassembly and assembly of the filter net 1, improves the convenience of replacing the filter net 1, and reduces the labor intensity.

[0069] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A processing method for lithium battery tab glue, characterized in that It includes the following steps: Step 1: Prepare the PEN layer and the PP layer respectively by using a co-extrusion molding process; Step 2: Mix rubber, flame retardant, curing agent, ion capturer, accelerator, graphene and resin to obtain a semi-finished adhesive. Add the semi-finished adhesive to a high-speed disperser for dispersion. After the dispersion is completed, filter the dispersed semi-finished adhesive through a filter screen (1) with a size of 5-10 microns to obtain a finished adhesive; Step 3: Coat the surface of the PEN layer with the finished adhesive and dry it to obtain an adhesive layer; Step 4: Compound the PP layer on the surface of the adhesive layer away from the PEN layer and cure it to obtain an ear tab glue colloid; In Step 2, first mix rubber, flame retardant, curing agent, ion capturer, accelerator, graphene and resin through a mixing device. The mixing device includes a mixing tank (2). Several first support legs (3) are arranged at the bottom of the mixing tank (2). A stirring motor (4) is arranged at the center position of the bottom of the mixing tank (2). A stirring shaft (5) is arranged at the output end of the stirring motor (4). The upper end of the stirring shaft (5) penetrates the bottom wall of the mixing tank (2), extends into the interior of the mixing tank (2) and is provided with several stirring blades (6). The stirring blades (6) are perpendicular to the stirring shaft (5). The stirring shaft (5) is hermetically and rotatably connected to the position where it penetrates the bottom wall of the mixing tank (2). A mixing inlet is arranged on one side wall at the upper end of the mixing tank (2), and a protective door is arranged at the mixing inlet. A mixing output pipe (7) is arranged on the side wall at the lower end of the mixing tank (2). The mixing output pipe (7) is communicated with the interior of the mixing tank (2). A feeding assembly is arranged in the mixing tank (2), and the feeding assembly is used for feeding materials into the mixing tank (2); The feeding assembly includes: a fixed shaft (8), the fixed shaft (8) is fixedly connected to the center position of the inner wall of the top of the mixing tank (2), a first gear (9) is fixedly arranged at the lower end of the fixed shaft (8), a rotating cylinder (10) is rotatably sleeved on the fixed shaft (8), a mounting plate (11) is fixedly arranged on the outer wall of the rotating cylinder (10), a feeding tank (12) is arranged at one end of the mounting plate (11) away from the rotating cylinder (10), a feeding port is arranged at the upper end of the feeding tank (12), a feeding pipe (14) is communicated at the bottom of the feeding tank (12), a transfer pipe (15) is communicated at the lower end of the feeding pipe (14), the lower end of the transfer pipe (15) is communicated with the inside of the mixing tank (2) through a blanking port (16), the transfer pipe (15) is cylindrical, a rotating column (17) is horizontally arranged in the transfer pipe (15), the front and rear ends of the rotating column (17) are rotatably connected to the front and rear side walls of the transfer pipe (15) through a first rotating shaft (18), a placing groove (20) is arranged on the outer wall of the rotating column (17) along the axial direction of the rotating column (17), the rear end of the first rotating shaft (18) located at the rear extends to the outside of the transfer pipe (15) and is provided with a first sprocket (19), a first motor (21) is arranged on the lower surface of the mounting plate (11), a second gear (22) is arranged at the output end of the first motor (21), the second gear (22) is a semi-circular gear, the second gear (22) is intermittently meshed with the first gear (9), a driving assembly is arranged between the first motor (21) and the feeding tank (12), and the driving assembly is used for driving the first sprocket (19) to rotate. A vertical pipe (23) is fixedly arranged on the upper surface of the mounting plate (11), a first spring (24) is arranged in the vertical pipe (23), the lower end of the first spring (24) is fixedly connected to the inner wall of the vertical pipe (23), a clamping column (25) is arranged at the upper end of the first spring (24), the clamping column (25) is slidably connected to the inner wall of the vertical pipe (23), the upper end of the clamping column (25) is a hemispherical body and is adapted to a clamping groove (26), a plurality of clamping grooves (26) are arranged, and the plurality of clamping grooves (26) are annularly arranged on the inner wall of the top of the mixing tank (2) centered on the center of the inner wall of the top of the mixing tank (2); The driving assembly includes: two fixed plates (27) disposed between the first motor (21) and the feeding tank (12), the upper ends of the fixed plates (27) are fixedly connected to the lower surface of the mounting plate (11), a sliding rod (28) is disposed between the two fixed plates (27), the front and rear ends of the sliding rod (28) respectively penetrate through the front and rear fixed plates (27) and are slidably connected to the penetration positions of the fixed plates (27), baffles (29) are fixedly provided at the front and rear ends of the sliding rod (28), a second spring (30) is disposed between the baffles (29) and the fixed plates (27), one end of the second spring (30) is fixedly connected to the side wall of the baffle (29), the other end of the second spring (30) is fixedly connected to the side wall of the fixed plate (27), first racks (31) are disposed on the left and right sides of the sliding rod (28), a second rotating shaft (32) is disposed between the fixed plate (27) and the first motor (21), the upper end of the second rotating shaft (32) is rotatably connected to the lower surface of the mounting plate (11), a third gear (33) is disposed at the lower end of the second rotating shaft (32), the third gear (33) intermittently meshes with the second gear (22), the third gear (33) meshes with the first rack (31) close to the first motor (21), a support plate (34) is disposed between the fixed plate (27) and the feeding tank (12), the upper end of the support plate (34) is fixedly connected to the lower surface of the mounting plate (11), a third rotating shaft (35) is rotatably provided at the front end of the support plate (34), a first bevel gear (36) and a second sprocket (37) are sequentially arranged on the third rotating shaft (35) from front to back, the second sprocket (37) is drivingly connected to the first sprocket (19) through a chain (38), a fourth rotating shaft (39) is disposed in front of the support plate (34), the upper end of the fourth rotating shaft (39) is rotatably connected to the lower surface of the mounting plate (11), a fourth gear (40) and a second bevel gear (41) are sequentially arranged on the fourth rotating shaft (39) from top to bottom, the second bevel gear (41) meshes with the first bevel gear (36), and the fourth gear (40) meshes with the first rack (31) close to the feeding tank (12).

2. The processing method of a lithium battery tab glue according to claim 1, wherein, In step 1, the PEN layer is made of PEN material, and the PP layer is made of 140 °C soluble PP material.

3. A method for processing a lithium battery tab glue according to claim 1, characterized in that, The finished adhesive includes, by weight percentage: 20 - 40% rubber, 5 - 10% flame retardant, 3 - 5% curing agent, 0.05 - 0.1% ion scavenger, 3 - 5% accelerator, 1 - 5% graphene, and 30 - 60% resin.

4. A method for processing a lithium battery tab glue according to claim 1, characterized in that, In step 2, the dispersion time of the high-speed disperser is 3 - 10 h, the rotation speed of the high-speed disperser is 800 - 120 r / min, a constant temperature water bath is provided on the high-speed disperser, and the dispersion temperature is controlled at 25 - 30 °C through the constant temperature water bath during the dispersion process.

5. A method for processing a lithium battery tab glue according to claim 1, characterized in that, In step 4, after the tab glue colloid is prepared, the tab glue colloid is slit and its performance is detected. The performance detection includes: detecting the thickness of the PEN layer, detecting the thickness of the PP layer, detecting the thickness of the adhesive layer, detecting the total thickness of the tab glue colloid, detecting the peel strength of the PP layer, and immersing the tab glue colloid in the battery electrolyte to detect whether the tab glue colloid is delaminated.

6. A method for processing a lithium battery tab glue according to claim 1, characterized in that, In step 2, the filter screen (1) is arranged in the filtering device. The filtering device includes: a filtering box (42), a filtering inlet (43) is arranged at the upper end of the filtering box (42), a filtering outlet (44) is arranged at the lower end of the filtering box (42), several second support legs (45) are arranged at the bottom of the filtering box (42), sliding grooves (46) are arranged at the inner walls of the left and right sides of the filtering box (42) near the middle position, an installation opening is arranged on the front side wall of the filtering box (42), the installation opening is communicated with the sliding groove (46), an installation frame body (47) is slidably arranged between the two sliding grooves (46), a handle (48) is arranged at the front end of the installation frame body (47), the filter screen (1) is horizontally arranged in the installation frame body (47) through an installation component, a first channel (49) is arranged inside the front end of the installation frame body (47), the first channel (49) is communicated with the sliding groove (46) through a first through hole (50), a bidirectional electric push rod (51) is arranged at the center of the first channel (49), a telescopic shaft (52) is arranged at the output end of the bidirectional electric push rod (51), a push block (53) is arranged at one end of the telescopic shaft (52) away from the bidirectional electric push rod (51), an installation groove (54) is arranged on the side of the sliding groove (46) away from the first channel (49), the installation groove (54) is communicated with the sliding groove (46), a clamping block (55) is slidably arranged in the installation groove (54), the cross section of the clamping block (55) is in the shape of a right trapezoid, a slope is arranged on the front end of the clamping block (55) near the installation opening side, a third spring (56) is arranged in the installation groove (54), one end of the third spring (56) is fixedly connected with the inner wall of the installation groove (54), and the other end of the third spring (56) is fixedly connected with the clamping block (55).

7. A method for processing the tab glue of a lithium battery according to claim 6, characterized in that, The installation component includes second channels (57), the two second channels (57) are symmetrically arranged on the left and right sides of the installation frame body (47), the two second channels (57) are located on the left and right transverse plates (58) of the filter screen (1), the front end of the second channel (57) is communicated with the first channel (49), two transverse plates (58) are arranged on both the left and right sides of the filter screen (1), the two transverse plates (58) are respectively arranged on the upper and lower sides of the filter screen (1), the transverse plates (58) are slidably connected with the installation frame body (47) through second through holes (59), the second through holes (59) are communicated with the second channels (57), a second rack (60) is arranged at one end of the transverse plate (58) away from the filter screen (1), a third rack (61) is arranged on the side of the push block (53) close to the second channel (57), the upper and lower sides of the third rack (61) are toothed, the third rack (61) extends between the two second racks (60), a fifth rotating shaft (62) is arranged between the third rack (61) and the second rack (60), the fifth rotating shaft (62) is rotatably connected with the rear side wall of the second channel (57), and a fifth gear (63) is arranged on the fifth rotating shaft (62), and the fifth gear (63) is respectively meshed with the third rack (61) and the second rack (60).

Images