Pole piece coil processing device and lamination equipment

Abstract

The invention provides a pole piece material roll processing device and lamination equipment, and the pole piece material roll processing device comprises an unwinding unit which is used for unwinding a pole piece material roll into a pole piece material belt; the traction unit is used for enabling the pole piece material belt to advance along a preset path; the printing unit comprises a glue supply assembly, a gravure roller and an impressing roller; the gravure roller is rotatably arranged on the first side of the preset path, at least one glue storage ink cell set is arranged on the periphery of the gravure roller, and the glue supply assembly is used for supplying glue to the glue storage ink cell set; the impressing roller is rotatably arranged on the second side of the preset path and is opposite to the gravure roller, and the impressing roller is used for pressing a pole piece material belt to the gravure roller so as to transfer glue in the glue storage ink cell group to the pole piece material belt to form a glue frame; and the rubber frame curing unit is arranged at the downstream of the printing unit along the advancing direction of the pole piece material belt.

Description

Technical Field

[0001] The present invention relates to the technical field of battery preparation, and more particularly to a pole sheet roll processing device and a lamination device. Background Art

[0002] In the preparation of solid-state batteries, it is usually necessary to compound a plastic frame around the edge of the negative electrode sheet. In the prior art, the plastic frame is generally set piece by piece after the electrode sheet roll is cut to form the electrode sheet. For example, the plastic frame is attached to the negative electrode sheet by a robot, but the plastic frame is thin and small in size, and is easily deformed during the loading and transfer process, and is also prone to adhesion. However, setting the plastic frame piece by piece is inefficient and not conducive to large-scale production. Moreover, due to the thinness and small size of the plastic frame, it is easily deformed during the loading and transfer process, and is also prone to adhesion, which is not conducive to production and manufacturing. Summary of the Invention

[0003] The present invention provides a new technical solution for a pole piece material roll processing device, which can at least solve the technical problem of low efficiency of the existing pole piece composite rubber frame.

[0004] The present invention also provides a new technical solution for lamination equipment.

[0005] According to a first aspect of the present invention, a pole piece material roll processing device is provided, comprising: an unwinding unit, the unwinding unit being used to unwind the pole piece material roll into a pole piece material strip; a traction unit, the traction unit being used to make the pole piece material strip travel along a preset path; a printing unit, the printing unit comprising a glue supply assembly, a gravure roller and an embossing roller; the gravure roller being rotatably arranged on a first side of the preset path, the outer periphery of the gravure roller being provided with at least one glue storage mesh group, the glue supply assembly being used to supply glue to the glue storage mesh group; the embossing roller being rotatably arranged on a second side of the preset path and opposite to the gravure roller, the embossing roller being used to press the pole piece material strip toward the gravure roller, so as to transfer the glue in the glue storage mesh group to the pole piece material strip to form a glue frame; a glue frame curing unit, the glue frame curing unit being arranged downstream of the printing unit along the traveling direction of the pole piece material strip.

[0006] Optionally, the glue supply assembly includes: a glue groove, the radial part of the gravure roller is located in the glue groove; a first scraper, the first scraper is in contact with the outer peripheral surface of the gravure roller; along the rotation direction of the gravure roller, the glue groove, the first scraper and the embossing roller are arranged in sequence.

[0007] Optionally, the gravure roller is provided with a glue buffer cavity, which is connected to the glue storage mesh group; the glue supply component includes: a glue barrel and a pump body, the liquid inlet end of the pump body is connected to the glue barrel, and the liquid outlet end of the pump body is connected to the glue buffer cavity.

[0008] Optionally, the glue supply assembly also includes: a second scraper, which is in contact with the outer peripheral surface of the gravure roller; a return pipe, the first end of which is connected to the glue barrel, and the second end of which is located at the lower side of the contact point between the second scraper and the gravure roller.

[0009] Optionally, the glue frame curing unit is selected from one of a UV unit, a hot air unit and an infrared radiation unit.

[0010] Optionally, the glue frame curing unit is a UV unit, and the electrode material roll processing device also includes: a nitrogen inerting unit, which is arranged downstream of the printing unit along the traveling direction, and the nitrogen inerting unit is located on one side of the glue frame curing unit; and / or, a cooling unit, which is arranged downstream of the printing unit along the traveling direction, and the cooling unit is located on one side of the glue frame curing unit.

[0011] Optionally, the hot air unit includes at least three independently arranged hot air modules arranged in sequence along the traveling direction.

[0012] Optionally, the electrode material roll processing device also includes: a rubber frame detection unit, which is arranged downstream of the rubber frame curing unit along the travel direction, and the rubber frame detection unit is located on the first side of the preset path; the rubber frame detection unit includes at least one of a visual detection module, a size measurement module and an insulation detection module.

[0013] Optionally, the pole piece material roll processing device also includes: a correction unit, which is arranged upstream of the printing unit along the travel direction, and the correction unit is used to correct the pole piece material strip in its width direction; an offset detection unit, which is provided upstream and / or downstream of the correction unit along the travel direction.

[0014] Optionally, the electrode stock roll processing device further includes: a plasma cleaning unit, the plasma cleaning unit is arranged upstream of the printing unit along the traveling direction, and the plasma cleaning unit is located on the first side of the preset path.

[0015] Optionally, the pole piece roll processing device further includes: a material strip dust removal unit, the material strip dust removal unit is arranged upstream of the plasma cleaning unit along the traveling direction, and the material strip dust removal unit is located on the first side of the preset path.

[0016] Optionally, the electrode stock roll processing device further includes: a tension control unit, which is arranged upstream of the printing unit along the traveling direction.

[0017] Optionally, the traction unit is a winding unit.

[0018] Optionally, the traction unit includes a rotatable traction roller, and the pole piece roll processing device further includes: a slicing unit, and the slicing unit is arranged downstream of the traction unit along the traveling direction.

[0019] According to a second aspect of the present invention, there is provided a lamination device comprising any one of the pole piece roll processing devices described above.

[0020] According to the electrode material roll processing device of the present invention, the glue supply component, gravure roller and embossing roller are arranged to cooperate, so that the glue can be transferred to the edge of the electrode to form a glue frame when the electrode material strip moves. Moreover, the glue frame curing unit is arranged to solidify the transferred glue frame when the electrode material strip moves, without the need for positioning, transferring and waiting for each piece, which effectively improves the battery production efficiency, can meet the needs of large-scale production, and ensures the glue frame yield.

[0021] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0023] Figure 1 2 is a schematic structural diagram of a pole piece roll processing device according to an embodiment of the present invention;

[0024] Figure 2 2 is a schematic structural diagram of a pole piece roll processing device according to another embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a gravure roller according to an embodiment of the present invention.

[0026] Reference numerals

[0027] 100. Electrode sheet coil processing device;

[0028] 10. Unwinding unit; 20. Traction unit; 30. Printing unit; 31. Glue supply assembly; 311. Glue tank; 312. First scraper; 313. Glue barrel; 314. Second scraper; 315. Return pipe; 316. Glue injection hose; 32. Gravure roller; 321. Glue storage grid group; 33. Imprinting roller; 40. Glue frame curing unit; 50. Glue frame detection unit; 60. Deviation correction unit; 70. Plasma cleaning unit; 80. Tension control unit; 90. Slicing unit.

[0029] 200. Pole material strip. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0034] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0035] First, the electrode sheet roll processing device 100 according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] like Figures 1 to 3 As shown, the electrode material roll processing device 100 according to an embodiment of the present invention includes: an unwinding unit 10, a traction unit 20, a printing unit 30 and a glue frame curing unit 40.

[0037] Specifically, the unwinding unit 10 is used to unwind the electrode material roll into a electrode material strip 200; the traction unit 20 is used to make the electrode material strip 200 move along a preset path; the printing unit 30 includes a glue supply component 31, a gravure roller 32 and an embossing roller 33; the gravure roller 32 is rotatably arranged on the first side of the preset path, and the outer periphery of the gravure roller 32 is provided with at least one glue storage mesh group 321, and the glue supply component 31 is used to supply glue to the glue storage mesh group 321; the embossing roller 33 is rotatably arranged on the second side of the preset path and opposite to the gravure roller 32, and the embossing roller 33 is used to press the electrode material strip 200 toward the gravure roller 32 to transfer the glue in the glue storage mesh group 321 to the electrode material strip 200 to form a glue frame; the glue frame curing unit 40 is arranged downstream of the printing unit 30 along the moving direction of the electrode material strip 200.

[0038] In other words, if Figures 1 to 3As shown, the electrode sheet stock roll processing device 100 according to an embodiment of the present invention is mainly used to process the electrode sheet stock roll. The electrode sheet stock roll is formed by winding a electrode sheet strip 200, on which a plurality of electrode sheets are divided, and the plurality of electrode sheets are distributed along the length direction of the electrode sheet strip 200. The electrode sheet stock roll processing device 100 mainly includes a body, on which an unwinding unit 10, a traction unit 20, a printing unit 30 and a plastic frame curing unit 40 are provided. Among them, the unwinding unit 10 can install the electrode sheet stock roll, and the electrode sheet stock roll can be unwound into the electrode sheet strip 200 through the unwinding unit 10, and the traction unit 20 can pull the electrode sheet strip 200 along a preset path.

[0039] The printing unit 30 primarily includes a glue supply assembly 31, a gravure roller 32, and an embossing roller 33. Both the gravure roller 32 and the embossing roller 33 are rotatably mounted on the machine body and can be driven by independent motors. The gravure roller 32 is located on the first side of the preset path (i.e., the first side of the electrode strip 200 in its thickness direction). A glue storage cell group 321 is provided on the periphery of the gravure roller 32. The glue storage cell group 321 is in the shape of a rectangular frame, which is the same shape as the required glue frame. The embossing roller 33 is located on the second side of the preset path (i.e., the second side of the electrode strip 200 in its thickness direction), and the position of the embossing roller 33 corresponds to that of the gravure roller 32. During use, the glue supply assembly 31 can continuously supply glue to the glue storage mesh group 321, and the embossing roller 33 can press the electrode material strip 200 against the gravure roller 32, so that the glue storage mesh group 321 can accurately transfer the glue in the electrode material strip 200 to the first side of the electrode material strip 200 as it moves, forming a glue frame located at the edge of the electrode, thereby ensuring the accuracy of the glue frame. The glue frame curing unit 40 is located downstream of the printing unit 30 along the direction of travel of the electrode material strip 200. The glue frame curing unit 40 can cure the transferred glue frame as the electrode material strip 200 moves, which can effectively increase the molding speed of the glue frame, thereby preventing glue from sagging or contaminating the electrode active layer.

[0040] Therefore, according to the electrode material roll processing device 100 provided in this embodiment, the glue supply component 31, the gravure roller 32 and the embossing roller 33 are coordinated to transfer the glue to the edge of the electrode to form a glue frame when the electrode material strip 200 moves, and the glue frame curing unit 40 is set to solidify the transferred glue frame when the electrode material strip 200 moves, without the need for positioning, transferring and waiting piece by piece, which effectively improves the battery production efficiency, can meet the needs of large-scale production, and ensures the glue frame yield.

[0041] It should be noted that the number of the glue storage cell groups 321 on the gravure roller 32 can be determined according to the size of the gravure roller 32 and the size of the pole piece, which will not be described in detail in this embodiment.

[0042] In some optional examples of the present invention, the gravure roller 32 is a ceramic-coated gravure roller 32 . The ceramic-coated gravure roller 32 has good wear resistance. The use of the ceramic-coated gravure roller 32 can ensure the service life of the gravure roller 32 .

[0043] According to one embodiment of the present invention, the glue storage cell group 321 includes multiple cells that form a rectangular frame structure. The cells can be laser engraved, with a cell line count of 150 lines per inch (LPI) and a cell groove depth of 25 μm. Furthermore, the cell groove edge slope can be set to 45° to reduce glue residue.

[0044] In some specific embodiments of the present invention, the glue supply assembly 31 includes: a glue groove 311, the gravure roller 32 is located in the glue groove 311 in its radial portion; a first scraper 312, the first scraper 312 is in contact with the outer peripheral surface of the gravure roller 32; along the rotation direction of the gravure roller 32, the glue groove 311, the first scraper 312 and the embossing roller 33 are arranged in sequence.

[0045] Specifically, if Figure 1 As shown, the glue supply assembly 31 primarily comprises a glue tank 311 and a first scraper 312. The glue tank 311 is used to hold the glue required for printing. The opening of the glue tank 311 is longer than the axial dimension of the gravure roller 32. The glue tank 311 is located on the underside of the gravure roller 32. The gravure roller 32 extends radially from the opening of the glue tank 311 into the glue tank 311, so that a portion of the gravure roller 32 is located in the glue within the glue tank 311. The first scraper 312 is mounted on the machine body, with one end of the first scraper 312 contacting the outer circumference of the gravure roller 32. Furthermore, the glue tank 311, the first scraper 312, and the impression roller 33 are arranged sequentially in the direction of rotation of the gravure roller 32. During use, as the gravure roller 32 rotates, the first scraper 312 can scrape off all excess glue outside the glue storage mesh group 321, leaving only a fixed amount of glue in the glue storage mesh, and the scraped glue can flow into the glue groove 311 from the opening of the glue groove 311.

[0046] In this embodiment, the glue supply component 31 can automatically fill the glue storage mesh with glue by virtue of the rotation of the gravure roller 32, without the need for an additional driving structure for glue supply, and the structure is simple.

[0047] In some optional embodiments of the present invention, glue tank 311 is a thermostatic tank that can consistently control the glue temperature within a preset range, such as 25°C, to ensure stable glue viscosity and properties, thereby ensuring consistent printing quality. A stirrer is also provided within glue tank 311. The stirring action of the stirrer effectively prevents sedimentation of solid components in the glue, thereby ensuring uniformity and consistency of the glue.

[0048] According to one embodiment of the present invention, the gravure roller 32 is provided with a glue buffer chamber, which is connected to the glue storage mesh group 321; the glue supply component 31 includes: a glue barrel 313 and a pump body, the liquid inlet end of the pump body is connected to the glue barrel 313, and the liquid outlet end of the pump body is connected to the glue buffer chamber.

[0049] That is to say, if Figure 2 As shown, the gravure roller 32 is hollow, with its inner wall defining a glue buffer chamber that communicates with each cell of the glue storage cell group 321. The glue supply assembly 31 primarily comprises a glue barrel 313 and a pump body. The glue barrel 313 can be a thermostatic barrel for storing glue. The pump body can be a gear pump, with the pump body's liquid inlet connected to the glue barrel 313 and the pump body's liquid outlet connected to the glue buffer chamber. Specifically, the pump body's liquid inlet is provided with a liquid inlet pipe, the first end of which is located at the pump body's liquid inlet, and the second end of which is located within the glue barrel 313. One end of the gravure roller 32 is provided with a coaxially arranged glue injection channel, the first end of which communicates with the glue buffer chamber, while the pump body's liquid outlet is connected to the glue injection channel via a glue injection pipe 316.

[0050] In this embodiment, the glue in the glue barrel 313 can be injected into the glue buffer chamber through the pump body, and then evenly distributed to the glue storage mesh group 321 by the glue buffer chamber, which is conducive to ensuring a constant glue supply amount, thereby ensuring the consistency of the thickness of the glue frame.

[0051] In some optional examples of the present invention, a glue injection valve is provided on the glue injection tube 316 .

[0052] In some specific embodiments of the present invention, the glue supply assembly 31 also includes: a second scraper 314, which is in contact with the outer peripheral surface of the gravure roller 32; a return pipe 315, the first end of which is connected to the glue barrel 313, and the second end of which is located at the lower side of the contact point between the second scraper 314 and the gravure roller 32.

[0053] Specifically, if Figure 2As shown, the machine body is equipped with a second scraper 314, which is in contact with the outer circumference of the gravure roller 32. During use, as the gravure roller 32 rotates, the second scraper 314 can scrape away any glue protruding from the outer circumference of the gravure roller 32, thereby ensuring a consistent thickness of the glue frame. A glue barrel 313 is located below the gravure roller 32. A return pipe 315 is fixedly connected to the upper end of the glue barrel 313. The lower end of the return pipe 315 is connected to the glue barrel 313, and the upper end of the return pipe 315 is located below the contact between the second scraper 314 and the gravure roller 32. This allows the glue scraped off by the second scraper 314 to be immediately recycled back to the glue barrel 313, achieving glue recycling. At the same time, gas can enter the glue barrel 313 from the upper end of the return pipe 315, and without the need for an additional ventilation structure, it can also ensure the balance of air pressure inside and outside the glue barrel 313, thereby preventing negative pressure from forming in the glue barrel 313 when the pump body is pumping glue, which may cause fluctuations in the glue supply.

[0054] In some optional examples of the present invention, a filter is provided on the return pipe 315 , which may be a 10 μm grade filter. The filter can intercept particulate impurities in the return glue liquid, thereby preventing the particulate impurities from contaminating the glue in the glue barrel 313 .

[0055] In some specific embodiments of the present invention, both the first scraper 312 and the second scraper 314 can be made of polyurethane scrapers, which have good wear resistance and elasticity. The angles of the first scraper 312 and the second scraper 314 can be set to 50 degrees. In addition, the pressure between the first scraper 312, the second scraper 314 and the roller surface of the gravure roller 32 is adjustable. Specifically, the first scraper 312 and the second scraper 314 are respectively configured with a drive structure and a pressure sensor. The pressure sensor can dynamically feedback the real-time pressure between the corresponding scraper and the roller surface of the gravure roller 32. The control system of the electrode roll processing device 100 can adjust the pressure applied by the corresponding scraper according to the feedback pressure, ensuring that the pressure between the scraper and the roller surface remains within a preset range, thereby effectively preventing glue from splashing or scratching the roller surface.

[0056] According to one embodiment of the present invention, the frame curing unit 40 is selected from one of a UV unit, a hot air unit and an infrared radiation unit.

[0057] That is, the frame curing unit 40 can be a UV unit, a hot air unit or an infrared radiation unit. Among them, the UV unit mainly includes a UV lamp array, which can be an LED array with a wavelength of 395nm and a power density of 800mW / cm 2 When the glue frame curing unit 40 adopts a UV unit, the glue selected for printing is UV insulating glue, such as Dymax9001-E, which has a viscosity of 300 cP (25°C) and a volume resistivity of >10 15Ω·cm. The UV unit can irradiate UV light to the glue frame formed by transfer, so that it can be quickly cured. The hot air unit mainly includes a hot air blower, which has a blowing port with a slit structure, and the length direction of the blowing port can be consistent with the width direction of the electrode material strip 200. When the glue frame curing unit 40 adopts a hot air unit, the glue selected for printing can be a thermosetting glue, and the hot air unit can blow hot air to the glue frame formed by transfer, providing an environment with a relatively high temperature, which is conducive to the rapid drying and curing of the glue frame. The infrared radiation unit can be an infrared radiator, which can emit infrared radiation with a wavelength of about 1.2μm toward the glue frame formed by transfer, thereby achieving penetrating drying of the glue frame and enabling the glue frame to be quickly cured.

[0058] In some specific embodiments of the present invention, the glue frame curing unit 40 is a UV unit, and the electrode material roll processing device 100 also includes: a nitrogen inerting unit, which is arranged downstream of the printing unit 30 along the traveling direction, and the nitrogen inerting unit is located on one side of the glue frame curing unit 40; and / or, a cooling unit, which is arranged downstream of the printing unit 30 along the traveling direction, and the cooling unit is located on one side of the glue frame curing unit 40.

[0059] Specifically, the frame curing unit 40 is a UV unit, and a nitrogen inerting unit is provided downstream of the printing unit 30. The nitrogen inerting unit can be a nitrogen source, such as a nitrogen bottle, and is located on one side of the UV unit. The nitrogen curing unit can continuously deliver nitrogen to the surrounding area of ​​the frame when the frame is irradiated by UV light, reducing the oxygen concentration in the environment of the frame to less than 100 ppm. The low-oxygen environment can significantly suppress the oxygen inhibition effect, thereby effectively improving the curing efficiency of the frame.

[0060] The cooling unit can be a cold plate or a cold roller, and can be located on the second side of the preset path. During use, the electrode strip 200 is located between the cooling unit and the frame curing unit 40, and the cooling unit can be attached to the side of the electrode strip 200 facing away from the frame. The cooling unit can cool the electrode strip 200 while the frame is curing, thereby effectively preventing damage to the electrode strip 200 due to excessive temperature.

[0061] According to one embodiment of the present invention, the hot air unit includes at least three independently arranged hot air modules sequentially arranged along the traveling direction.

[0062] That is to say, the hot air unit includes a plurality of hot air modules, and the plurality of hot air modules are distributed along the traveling direction of the electrode strip 200. Each hot air module includes at least one hot air blower, and the temperature of each hot air blower can be adjusted independently. In this embodiment, the hot air unit includes at least three hot air modules, namely, a first hot air module, a second hot air module and a third hot air module, and the first hot air module, the second hot air module and the third hot air module are distributed in sequence along the traveling direction of the electrode strip 200. When in use, the temperature of the area where the first hot air module and the third module are located is lower than the temperature of the area where the second hot air module is located, so that the hot air unit can form a preheating zone of 50°C, a main curing zone of 80°C to 120°C and a slow cooling zone of 40°C, so that the heating and cooling of the glue frame are stable, which can effectively avoid stress concentration and deformation, and ensure the molding quality of the glue frame.

[0063] In some specific embodiments of the present invention, the electrode material roll processing device 100 also includes: a rubber frame detection unit 50, which is arranged downstream of the rubber frame curing unit 40 along the traveling direction, and the rubber frame detection unit 50 is located on the first side of the preset path; the rubber frame detection unit 50 includes at least one of a visual detection module, a thickness measurement module and an insulation detection module.

[0064] Specifically, if Figure 1 and Figure 2 As shown, the machine body is provided with a glue frame detection unit 50 downstream of the glue frame curing unit 40. The glue frame detection unit 50 is located on the first side of the preset path. The glue frame on the first side of the pole piece strip 200 can be detected by the glue frame detection unit 50. The glue frame detection unit 50 includes a visual detection module, a dimension measurement module and an insulation detection module. Among them, the visual detection module can be a CCD visual system, and the lens of the visual detection module is facing the first side of the pole piece strip 200. The visual detection module can identify whether the glue frame has defects such as broken glue, bubbles or foreign matter. The recognition result can be fed back to the control system of the pole piece roll processing device 100 in real time, so as to facilitate the adjustment of the device operation according to the recognition structure to ensure the stability of the glue frame quality. The dimension measurement module can be a laser triangulation measuring instrument. The width and / or thickness of the glue frame can be measured by the dimension measurement module. The measurement result can be fed back to the control system in real time, so as to facilitate the adjustment of the device operation according to the measurement result to ensure that the glue frame reaches the predetermined size. The insulation detection module can be a non-contact resistance meter, which can detect whether the insulation of the rubber frame meets the standards. The test results can be fed back to the control system in real time, making it easy to adjust the device operation according to the test results to ensure the quality of the rubber frame.

[0065] According to one embodiment of the present invention, the pole piece material roll processing device 100 further includes: a correction unit 60, which is arranged upstream of the printing unit 30 along the travel direction, and the correction unit 60 is used to correct the pole piece material strip 200 in its width direction; and an offset detection unit, which is provided upstream and / or downstream of the correction unit 60 along the travel direction.

[0066] That is to say, if Figure 1 and Figure 2 As shown, the machine body is provided with a correction unit 60 upstream of the printing unit 30, and offset detection units are provided upstream and downstream of the correction unit 60. The correction unit 60 can correct the offset of the pole piece strip 200 in its width direction, the offset detection unit located upstream can detect the offset of the pole piece strip 200 in its width direction before the pole piece passes through the correction unit 60, and the offset detection unit located downstream can detect the offset of the pole piece strip 200 in its width direction after the pole piece passes through the correction unit 60.

[0067] During use, when the upstream offset detection unit detects that the pole piece material strip 200 is offset, the correction unit 60 can correct the pole piece material strip 200 according to the detection result of the offset detection unit; the downstream offset detection unit can perform a secondary detection on the pole piece material strip 200 after correction to determine whether the correction effect is qualified, and feed back the detection result to the control system to realize closed-loop dynamic compensation, thereby ensuring that the position of the pole piece material strip 200 always remains within the qualified range, and thus ensuring the accuracy of the subsequent printed rubber frame relative to the pole piece position.

[0068] In this embodiment, the correction unit 60 can adopt an existing correction mechanism, such as a serpentine correction mechanism, to correct the electrode strip 200 before printing the rubber frame. The correction unit 60 can also adopt other existing correction structures, which will be understood by those skilled in the art and will not be described in detail here.

[0069] In some specific embodiments of the present invention, the electrode stock roll processing device 100 further includes: a plasma cleaning unit 70, which is arranged upstream of the printing unit 30 along the traveling direction, and the plasma cleaning unit 70 is located on the first side of the preset path.

[0070] Specifically, if Figure 1 and Figure 2As shown, the machine body is provided with a plasma cleaning unit 70 upstream of the printing unit 30. The plasma cleaning unit 70 may be a plasma cleaning machine. The plasma cleaning unit 70 is located on the first side of the preset path. The plasma cleaning unit 70 can be used as a pretreatment unit to pretreat the first side of the electrode strip 200. For example, the plasma cleaning unit 70 can use a mixed gas of argon / oxygen 8:2 as the working medium, a power density of 300W / m, and a processing speed of 10m / min-30m / min to perform plasma pretreatment on the first side of the electrode strip 200. It has been verified that the surface energy of the electrode strip 200 is increased from 30dyn / cm to more than 60dyn / cm, which significantly improves the surface activity and provides stronger adhesion for the subsequent glue frame.

[0071] According to one embodiment of the present invention, the pole piece roll processing device 100 further includes: a material strip dust removal unit, which is arranged upstream of the plasma cleaning unit 70 along the traveling direction, and the material strip dust removal unit is located on the first side of the preset path.

[0072] That is to say, the machine body is provided with a material strip dust removal unit upstream of the plasma cleaning unit 70, and the material strip dust removal unit is located on the first side of the preset path, and the material strip dust removal unit can be used to remove dust from the first side of the electrode material strip 200. Specifically, the material strip dust removal unit consists of an ion wind rod and a dust-sticking roller rotatably mounted on the machine body, and the ion wind rod is arranged upstream of the dust-sticking roller. During operation, the ion wind rod first blows ion wind toward the electrode material strip 200 to neutralize the static electricity on its surface and reduce the adhesion of dust (for example, graphite dust); then the first side of the material strip passes closely against the surface of the dust-sticking roller, and the dust-sticking roller completely removes the dust, thereby providing a substrate surface with better adhesion for subsequent rubber frame printing.

[0073] In some specific embodiments of the present invention, the electrode roll processing device 100 further includes: a tension control unit 80, and the tension control unit 80 is arranged upstream of the printing unit 30 along the traveling direction.

[0074] Specifically, the machine body is provided with a tension control unit 80 upstream of the printing unit 30, and the tension of the pole piece strip 200 can be adjusted in real time through the tension control unit 80. The tension control unit 80 is mainly composed of a magnetic powder brake, a swing arm and a swing roller, wherein the magnetic powder brake is fixed to the machine body, the first end of the swing arm is connected to the output end of the magnetic powder brake, and the swing roller is rotatably provided at the second end of the swing arm, and the swing roller is located on the first side or the second side of the preset path. When in use, the pole piece strip 200 passes around the swing roller and enters the printing unit 30. The magnetic powder brake outputs a variable torque according to the real-time tension of the strip, and drives the swing roller to swing up and down through the swing arm, thereby changing the path length and realizing closed-loop adjustment of the tension, thereby stabilizing the tension within a predetermined range, and ensuring the accuracy and consistency of the subsequent rubber frame position.

[0075] According to one embodiment of the present invention, the traction unit 20 is a winding unit.

[0076] In this embodiment, the traction unit 20 is a winding unit arranged on the machine body. The winding unit can not only pull the electrode material strip 200 along a preset path, but also wind it up after the electrode material strip 200 is printed with a plastic frame and cured, so as to facilitate subsequent equipment use.

[0077] In some optional embodiments of the present invention, the reeling unit and the unreeling unit 10 respectively include a motor and an air shaft, the motor being fixedly connected to the machine body, and the output end of the motor being fixedly connected to the air shaft. In addition, the reeling unit and the unreeling unit 10 may also adopt other existing unreeling and reeling structures, which will not be described in detail in this embodiment.

[0078] In some specific embodiments of the present invention, the traction unit 20 includes a rotatable traction roller, and the pole piece roll processing device 100 further includes: a slicing unit 90, and the slicing unit 90 is arranged downstream of the traction unit 20 along the traveling direction.

[0079] Specifically, the traction unit 20 includes a traction roller and a motor. The motor is fixedly connected to the body. One end of the traction roller is fixedly connected to the output end of the motor. The traction roller can be driven to rotate by the motor. The outer peripheral surface of the traction roller can cooperate with the first side surface of the pole piece strip 200. By controlling the rotation of the traction roller, the pole piece strip 200 can be pulled along the preset path. Figure 1 and Figure 2 As shown, a slicing unit 90 is further provided downstream of the traction unit 20. The slicing unit 90 can adopt an existing electrode slicer, which mainly includes a slicing platform, a cutter and a drive member. The slicing platform and the cutter are distributed in the vertical direction. The cutter can be a circular cutter. The drive member can be a structure such as a cylinder. The output end of the drive member is connected to the cutter, and the cutter can be driven to move in the vertical direction by the drive member. When in use, the traction unit 20 can pull the electrode strip 200 between the slicing platform and the cutter. The drive member can drive the cutter to cut the electrode strip 200 to form a electrode with a plastic frame.

[0080] Compared with the traction unit 20 using a winding unit, this embodiment omits the winding process. After the plastic frame is cured, the slicing process can be carried out directly without the need for additional winding operations, thereby effectively simplifying the process flow.

[0081] According to one embodiment of the present invention, the traction unit 20 includes at least one roller structure, and the pole piece strip 200 can be pulled along a preset path by driving the roller structure to rotate by a motor.

[0082] In some embodiments of the present invention, a conveying unit, such as a conveyor belt, is further provided downstream of the slicing unit 90 , and the electrode sheets can be conveyed to the next workstation via the conveying unit.

[0083] In some specific embodiments of the present invention, the electrode stock roll processing device 100 further includes a plurality of rollers, which are rotatably provided on the machine body, and the required preset path can be defined by the rollers.

[0084] An embodiment of the present invention further provides a lamination device, including the electrode stock roll processing device 100 described in any of the above embodiments. Since the electrode stock roll processing device 100 according to the embodiment of the present invention has the above technical effects, the lamination device according to the embodiment of the present invention also has corresponding technical effects, which will not be described in detail in this embodiment.

[0085] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0086] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A pole piece roll processing device, characterized in that: include: An unwinding unit (10), the unwinding unit (10) being used to unwind the pole piece roll into a pole piece strip; A traction unit (20), the traction unit (20) being used to cause the pole piece strip to travel along a preset path; A printing unit (30), the printing unit (30) comprising a glue supply assembly (31), a gravure roller (32) and an embossing roller (33); The gravure roller (32) is rotatably arranged on a first side of the preset path, at least one glue storage cell group (321) is provided on the outer periphery of the gravure roller (32), and the glue supply component (31) is used for supplying glue to the glue storage cell group (321); The embossing roller (33) is rotatably arranged on the second side of the preset path and is opposite to the gravure roller (32), and the embossing roller (33) is used to press the electrode material strip toward the gravure roller (32) to transfer the glue in the glue storage mesh group (321) to the electrode material strip to form a glue frame; A glue frame curing unit (40) is provided downstream of the printing unit (30) along the traveling direction of the electrode material strip.

2. The electrode roll processing device according to claim 1, characterized in that: The glue supply component (31) comprises: A glue groove (311), wherein the gravure roller (32) is located in the glue groove (311) at its radial direction; a first scraper (312), wherein the first scraper (312) is in contact with the outer peripheral surface of the gravure roller (32); Along the rotation direction of the gravure roller (32), the glue groove (311), the first scraper (312) and the embossing roller (33) are arranged in sequence.

3. The electrode roll processing device according to claim 1, characterized in that: The gravure roller (32) is provided with a glue buffer cavity, and the glue buffer cavity is communicated with the glue storage mesh group (321); The glue supply component (31) comprises: A glue barrel (313) and a pump body, wherein the liquid inlet end of the pump body is communicated with the glue barrel (313), and the liquid outlet end of the pump body is communicated with the glue buffer chamber.

4. The electrode roll processing device according to claim 3, characterized in that: The glue supply component (31) further includes: a second scraper (314), the second scraper (314) being in contact with the outer peripheral surface of the gravure roller (32); A return pipe (315), wherein a first end of the return pipe (315) is connected to the glue barrel (313), and a second end of the return pipe (315) is located below the contact point between the second scraper (314) and the gravure roller (32).

5. The electrode roll processing device according to claim 1, characterized in that: The glue frame curing unit (40) is selected from one of a UV unit, a hot air unit and an infrared radiation unit.

6. The electrode roll processing device according to claim 1, characterized in that: The frame curing unit (40) is a UV unit, and the electrode roll processing device further comprises: a nitrogen inerting unit, the nitrogen inerting unit being arranged downstream of the printing unit (30) along the traveling direction, the nitrogen inerting unit being located on one side of the plastic frame curing unit (40); and / or, A cooling unit is provided downstream of the printing unit (30) along the traveling direction, and the cooling unit is located on one side of the plastic frame curing unit (40).

7. The electrode roll processing device according to claim 5, characterized in that: The hot air unit includes at least three independently arranged hot air modules arranged in sequence along the traveling direction.

8. The electrode roll processing device according to claim 1, characterized in that: Also includes: a plastic frame detection unit (50), the plastic frame detection unit (50) being arranged downstream of the plastic frame curing unit (40) along the traveling direction, and the plastic frame detection unit (50) being located on a first side of the preset path; The plastic frame detection unit (50) comprises at least one of a visual detection module, a size measurement module and an insulation detection module.

9. The electrode roll processing device according to claim 1, characterized in that: Also includes: a deflection correction unit (60), the deflection correction unit (60) being arranged upstream of the printing unit (30) along the traveling direction, the deflection correction unit (60) being used to correct the deflection of the electrode strip in its width direction; A deviation detection unit is provided upstream and / or downstream of the deviation correction unit (60) along the traveling direction.

10. The electrode roll processing device according to claim 1, characterized in that: Also includes: A plasma cleaning unit (70) is provided upstream of the printing unit (30) along the traveling direction, and the plasma cleaning unit (70) is located on a first side of the preset path.

11. The electrode roll processing device according to claim 10, characterized in that: Also includes: A material belt dust removal unit is provided upstream of the plasma cleaning unit (70) along the traveling direction, and the material belt dust removal unit is located on a first side of the preset path.

12. The electrode roll processing device according to claim 1, characterized in that: Also includes: A tension control unit (80) is provided upstream of the printing unit (30) along the traveling direction.

13. The electrode roll processing device according to claim 1, characterized in that: The traction unit (20) is a winding unit.

14. The electrode roll processing device according to claim 1, characterized in that: The traction unit (20) includes a rotatable traction roller, and the pole piece coil processing device further includes: A slicing unit (90) is provided downstream of the traction unit (20) along the traveling direction.

15. A lamination device, characterized in that: A pole piece roll processing device comprising the pole piece roll processing device according to any one of claims 1 to 14.

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