A high speed solid electrode coating method and apparatus

Abstract

The present application relates to the technical field of solid-state battery pole piece preparation, and particularly relates to a high-speed solid-state pole piece gluing method and equipment. The method sequentially divides the pole piece material belt along the width direction into full tab area, cleaning and gluing area and foil blank area, after deviation correction and tension control, sequentially performs laser cleaning on the surface layer of the cleaning and gluing area of the two sides of the pole piece to form a frame-shaped trace, applies solidified glue along the frame-shaped trace and completes solidification; the gluing can adopt point gluing synchronous gluing, roller gap gluing or roller printing gluing mode, the glue is preferably UV glue and is solidified by ultraviolet light. The equipment sequentially sets the unwinding, deviation correction, tension control, laser cleaning, gluing, solidification, pressing and post-processing components along the material belt conveying path, and can adapt to single piece cutting or roll-to-roll material collection. The present application can realize high-speed online gluing of solid-state pole pieces, the frame-shaped trace guarantees the gluing precision and the glue layer bonding force, adapts to the requirements of solvent-free processing, and meets the demand of large-scale production.

Description

Technical Field

[0001] This invention relates to the field of solid-state battery electrode preparation technology, and in particular to a high-speed solid-state electrode coating method and equipment. Background Technology

[0002] Against the backdrop of rapid iteration in new energy battery technology, solid-state batteries are gradually entering the stage of mass production due to their higher energy density and superior safety performance. As the core link in solid-state battery production, electrode preparation directly determines the mass production cost and performance consistency of the battery through its process efficiency and precision. Among these processes, the electrode coating process plays a crucial role in insulating and sealing the electrode and bonding its structure, making it an important step in ensuring the electrochemical performance and structural reliability of solid-state batteries.

[0003] The current solid electrode coating process mainly faces the following technical problems: Firstly, the positioning accuracy of the adhesive coating is insufficient, resulting in limited adhesion of the adhesive layer. Existing adhesive coating processes lack targeted substrate pretreatment, making it easy for the coating position to shift, resulting in poor edge consistency of the adhesive layer and a tendency for adhesive overflow and breakage. At the same time, the adhesion strength between the adhesive layer and the electrode substrate is insufficient, posing a risk of detachment during long-term use.

[0004] Secondly, it is difficult to balance efficiency and alignment accuracy in double-sided gluing. Traditional double-sided gluing often adopts a step-by-step operation method of "offline flipping after single-sided processing and then processing the second side". The process flow path is long, and the secondary positioning is prone to deviation, which cannot simultaneously meet the requirements of production efficiency and double-sided gluing alignment accuracy.

[0005] Thirdly, it is difficult to adapt to the high-speed continuous mass production cycle. Conventional coating methods require pausing the material conveyor belt for operation, which cannot match the operating rhythm of a continuous conveyor belt mass production line, thus restricting the mass production efficiency of solid electrode sheets. Summary of the Invention

[0006] To address the technical problems existing in the prior art, the present invention aims to provide a high-speed solid-state electrode coating method, characterized by comprising the following steps: Unwind the electrode strip, which is divided into a full tab area, a cleaning and coating area and a foil blank area along its width direction. The surface of the cleaning and coating area is a cleaning layer that can be removed by laser. The electrode strip is subjected to deviation correction and tension control; Laser cleaning is performed on the first side of the electrode strip to clean out frame-shaped marks on the surface of the cleaning and coating area on the first side. Apply cured colloid along the frame-shaped marks on the first surface; The curing colloid coated on the first surface is cured; Laser cleaning is performed on the second side of the electrode strip to clean frame-shaped marks on the surface of the cleaning and coating area on the second side. Apply cured colloid along the frame-shaped marks on the second surface; The curing colloid applied to the second surface is cured; Roller pressing is performed on the electrode strips that have completed double-sided adhesive coating and curing; The electrode strip is cut to obtain a single solid electrode; or the electrode strip is rewound to obtain a coated electrode roll.

[0007] In some feasible embodiments, the curing adhesive is applied along the frame-shaped marks by using a dispensing machine to continuously apply the curing adhesive within the frame-shaped marks, with the dispensing head of the dispensing machine moving synchronously with the conveying speed of the electrode strip and continuously dispensing adhesive.

[0008] In some feasible embodiments, the method of applying the cured adhesive along the frame-shaped mark is as follows: a high-speed pressure roller is used to apply adhesive through the roller gap. The roller surface of the high-speed pressure roller has an adhesive outlet gap that matches the contour of the frame-shaped mark. During the conveying of the electrode material strip, the high-speed pressure roller synchronously rolls out the adhesive, and the cured adhesive is evenly applied along the adhesive outlet gap into the frame-shaped mark. At the same time, the high-speed pressure roller rolls and conveys the electrode material strip.

[0009] In some feasible embodiments, the cured colloid is applied along the frame-shaped marks by using a printing roller to transfer the cured colloid to the frame-shaped mark area.

[0010] In some feasible embodiments, the curing colloid is a UV adhesive, and in the step of curing the curing colloid coated on the surface of the electrode strip, an ultraviolet light source is used to irradiate the UV adhesive to cure it.

[0011] In some feasible embodiments, after each side is laser-cleaned and before the curing colloid is applied, the surface is dusted to remove dust and debris generated during laser cleaning.

[0012] The present invention also provides a high-speed solid-state electrode coating device for implementing the high-speed solid-state electrode coating method as described in the above embodiments, wherein the high-speed solid-state electrode coating device comprises the following components arranged sequentially along the electrode material conveying path: Unwinding assembly for releasing the electrode stock; A correction component is used to correct the lateral positional offset of the electrode strip; Tension control components are used to control the constant tension conveying of the electrode strip; The first laser cleaning component is used to perform laser cleaning on the surface of the first side of the electrode strip cleaning adhesive area to clean out frame-shaped marks on the first side. The first adhesive application assembly is used to apply cured adhesive along the frame-shaped marks on the first surface; The first curing component is used to cure the curing colloid coated on the first side of the electrode strip; The second laser cleaning component is used to perform laser cleaning on the surface of the second side of the electrode strip cleaning adhesive area to clean out frame-shaped marks on the second side. The second adhesive application assembly is used to apply cured adhesive along the frame-shaped marks on the second surface; The second curing component is used to cure the curing colloid coated on the second side of the electrode strip; The pressing roller assembly is used to press and press the electrode strip that has been coated and cured with adhesive on both sides. A post-processing component is located downstream of the pressing roller assembly.

[0013] In some feasible embodiments, the first and second coating components are each independently any one of a dispensing machine coating unit, a roller press slit coating unit, or a roller printing coating unit; The roller-pressed slit adhesive application unit includes a high-speed roller, and the outer peripheral surface of the high-speed roller is provided with an adhesive dispensing slit that matches the outline of the frame-shaped mark. The roller printing and coating unit includes a printing transfer roller for transferring the cured adhesive to the frame-shaped mark area.

[0014] In some feasible embodiments, an automatic tape-connecting component is also included, which is located downstream of the unwinding component and upstream of the correction component along the tape conveying direction, for automatic connection of new and old electrode rolls without stopping the machine.

[0015] In some feasible embodiments, the post-processing component is a cutting module or a rewinding module; the cutting module is used to cut the electrode strip into single solid electrode sheets, and the rewinding module is used to rewind the electrode strip into finished coils.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: First, the present invention adopts a process route of laser cleaning of pre-formed frame marks and simultaneous adhesive application along the marks, which can complete online adhesive application without stopping the conveyor belt, greatly improving the operating speed of the adhesive application process and adapting to the high-speed mass production requirements of solid electrode sheets; at the same time, the frame marks provide a precise positioning reference and adhesive-containing area for adhesive application, effectively improving the accuracy and consistency of the adhesive application contour and ensuring the insulation and sealing effect.

[0017] Secondly, the present invention adopts a double-sided operation process of cleaning-applying adhesive-curing on one side in sequence. After the first side is coated and cured, the second side is processed. This avoids problems such as scratches caused by uncured adhesive layers and double-sided positioning interference that may occur when processing both sides at the same time. At the same time, the double-sided processing is completed online continuously without the need for intermediate transfer and flipping, which improves production efficiency and double-sided positioning accuracy.

[0018] Finally, the coating equipment of the present invention adopts modular components arranged sequentially along the conveyor belt path, integrating the entire process of unwinding, correction, tension control, laser cleaning, coating, curing and post-processing. The line layout is compact and the process connection is smooth. It can realize two production modes: roll-to-roll or single-sheet output, adapting to different solid electrode production scenarios, and the equipment has strong versatility. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A process flow diagram of the high-speed solid electrode coating method provided in the embodiments of the present invention; Figure 2 This is a schematic diagram of the structure of the electrode strip provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the high-speed solid-state electrode coating equipment with cut-out layout provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a roll-to-roll high-speed solid electrode coating device provided in an embodiment of the present invention.

[0021] Figure reference numerals: 1. Electrode strip, 101. Full tab area, 102. Cleaning and coating area, 103. Foil blank area, 104. Frame mark, 2. Unwinding assembly, 3. Automatic tape splicing assembly, 4. Tracking assembly, 5. Tension control assembly, 6. First laser cleaning assembly, 7. First coating assembly, 8. First curing assembly, 9. Second laser cleaning assembly, 10. Second coating assembly, 11. Second curing assembly, 12. Pressing roller assembly, 13. Post-processing assembly, 14. Dust removal assembly, 15. Transition roller. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Reference Figure 1 As shown, this embodiment of the invention provides a high-speed solid-state electrode coating method. This method is designed to meet the requirements of solvent-free, high-precision, and high-speed coating of solid-state electrodes. It can continuously complete the cleaning, coating, and curing processes on both sides of the electrode online, and specifically includes the following steps: Step 1: Unwind the electrode sheet material strip 1. (Refer to...) Figure 2 As shown, the electrode strip 1 is divided into a full tab area 101, a cleaning and coating area 102, and a foil blank area 103 along its width. The surface layer of the cleaning and coating area 102 is a cleaning layer that can be removed by laser. Specifically, the electrode strip 1 is a continuous strip structure in a roll. The full tab area 101 is the current collector tab area of ​​the electrode, used for subsequent series and parallel welding of the battery. The cleaning and coating area 102 is the functional area to be coated with adhesive, and the cleaning layer material on its surface can be selectively removed by laser to form a coating positioning reference. The foil blank area 103 is a metal foil substrate that provides structural support and conductivity for the electrode. The three areas are distributed along the width of the strip and extend continuously along its length. After being rolled up, they are continuously output through an unwinding process.

[0024] The second step involves correcting the deviation and controlling the tension of the electrode strip 1. After the electrode strip 1 is unwound, it first undergoes a deviation correction process to detect and correct any lateral positional deviation in real time, ensuring that the strip is smoothly conveyed along the preset path and guaranteeing the positional accuracy of subsequent laser cleaning and coating processes. Simultaneously, the tension control process adjusts the tension of the strip in real time, maintaining a constant conveying tension throughout the entire process. This prevents the strip from becoming loose and wrinkled or from stretching and deforming due to excessive tension, providing a stable material supply for subsequent high-precision processing.

[0025] The third step involves laser cleaning the first surface of the electrode strip 1, creating a frame-shaped mark 104 on the surface of the cleaning and coating area 102 on the first surface. When the electrode strip 1 is conveyed to the first laser cleaning station, the laser emitting device emits a laser beam of set power onto the surface of the cleaning and coating area 102 on the first surface of the electrode. The laser beam scans along a preset frame-shaped path, selectively removing the surface material of the cleaning layer through the energy of the laser, forming a frame-shaped mark 104 that matches the contour of the preset coating area. This frame-shaped mark 104 serves as a visual positioning reference for subsequent coating, ensuring accurate coating position. Furthermore, the slightly rough surface of the frame-shaped mark 104 enhances the adhesion between the adhesive layer and the electrode, while the grooved structure of the frame shape accommodates the adhesive, limiting its outward diffusion and improving the regularity of the adhesive layer contour.

[0026] The fourth step involves applying a cured adhesive along the frame-shaped markings 104 on the first surface. The electrode strip 1, having completed laser cleaning on the first surface, continues to be conveyed to the first adhesive application station. The adhesive application device uses the frame-shaped markings 104 as a positioning reference to precisely apply the cured adhesive within the area enclosed by the markings. The adhesive application process is synchronized with the conveying of the electrode strip 1, eliminating the need to pause the strip, thus achieving high-speed online adhesive application and ensuring continuous operation of the production line.

[0027] The fifth step is to cure the adhesive applied to the first side. The electrode strip 1, after the first side coating is completed, is immediately conveyed to the first curing station. The curing device outputs curing energy to the coating area, causing the adhesive to undergo a cross-linking curing reaction. The adhesive layer is cured before the electrode strip 1 leaves the first curing station, forming an adhesive layer with insulating and sealing functions. After single-sided coating and curing, the adhesive layer is stable, preventing problems such as adhesive layer scratches and adhesion during subsequent conveying and second-side processing.

[0028] Step 6: Laser cleaning is performed on the second side of the electrode strip 1, creating frame-shaped marks 104 on the surface of the cleaning and adhesive coating area 102 on the second side. After the adhesive coating on the first side is cured, the electrode strip 1 is conveyed to the second side processing station via the transition roller 15. The second laser cleaning device uses the same process parameters as the first side to perform laser scanning cleaning on the surface of the cleaning and adhesive coating area 102 on the second side of the electrode strip 1, forming frame-shaped marks 104 aligned with the first side at the corresponding positions on the second side, ensuring that the positions of the adhesive coating areas on both sides are consistent.

[0029] Step 7: Apply cured adhesive along the frame-shaped mark 104 on the second surface. After the laser cleaning of the second surface is completed, the electrode strip 1 is conveyed to the second adhesive application station. The second adhesive application device applies cured adhesive synchronously with the frame-shaped mark 104 on the second surface as a reference, ensuring that the positional accuracy and contour accuracy of the adhesive application on the second surface are consistent with those on the first surface.

[0030] Step 8: Curing the adhesive applied to the second side. After the second side is coated with adhesive, it immediately enters the second curing station, where the adhesive on the second side is cured by a curing device, completing the double-sided coating and curing process of electrode strip 1.

[0031] Step 9: Roll pressing is performed on the electrode strip 1 after double-sided adhesive coating and curing. The double-sided cured electrode strip 1 passes through the pressing roller assembly, and the rolling action makes the adhesive layer bond more tightly to the electrode substrate, further improving the adhesion reliability of the adhesive layer, while ensuring the flatness of the electrode, providing a stable strip state for subsequent post-processing processes.

[0032] Step 10, Post-processing. Depending on production needs, the electrode strip 1 can be cut to obtain a single solid electrode sheet; or the electrode strip 1 can be rewound to obtain a coated electrode roll. Specifically, when using the single-sheet output mode, the pressed electrode strip 1 is conveyed to the cutting station and cut with high precision according to the preset electrode size to obtain a single-sheet finished solid electrode sheet, which can directly flow into the subsequent battery assembly process; when using the roll-to-roll production mode, the pressed electrode strip 1 is directly conveyed to the rewinding station for rewinding to obtain a rolled coated electrode roll, which is convenient for storage and transportation and adaptable to subsequent roll-to-roll processing.

[0033] In some feasible embodiments, the application of cured adhesive along the frame-shaped mark 104 can be achieved using a dispensing machine with simultaneous adhesive application: the dispensing machine continuously applies the cured adhesive within the frame-shaped mark 104, with the dispensing head moving synchronously with the conveying speed of the electrode material belt 1 and continuously dispensing adhesive. Specifically, the dispensing head of the dispensing machine is equipped with a vision positioning module, which can identify the position of the frame-shaped mark 104 in real time. The dispensing head moves synchronously with the conveying speed of the electrode material belt 1, continuously dispensing adhesive during the following movement, precisely filling the area enclosed by the frame-shaped mark 104 with cured adhesive. This method does not require customized dedicated coating rollers, and the coating contour can be flexibly adjusted through programming to adapt to the production of multiple electrode specifications.

[0034] In some feasible embodiments, the application of cured colloid along the frame-shaped mark 104 can also be achieved using a roller-pressed slit coating method: a high-speed roller is used for roller-pressed slit coating. The roller surface of the high-speed roller has a slit for dispensing colloid that matches the contour of the frame-shaped mark 104. During the conveying of the electrode strip 1, the high-speed roller synchronously dispenses colloid, and the cured colloid is evenly coated along the slit into the frame-shaped mark 104. At the same time, the high-speed roller simultaneously conveys the electrode strip. Specifically, the high-speed roller has a colloid flow channel inside, through which the cured colloid is conveyed to the slit on the roller surface. The high-speed roller rotates at a speed consistent with the linear velocity of the electrode strip 1. When the slit on the roller surface rotates to the position where it contacts the electrode, the cured colloid is squeezed out from the slit and precisely coated within the area of ​​the frame-shaped mark 104. Simultaneously, the high-speed roller can also act as a conveyor roller to provide conveying power for the electrode strip 1, eliminating the need for additional conveyor roller sets and simplifying the production line structure.

[0035] In some feasible embodiments, the application of cured adhesive along the frame-shaped mark 104 can also be achieved using a roller printing method: a printing roller transfers the cured adhesive onto the frame-shaped mark 104 area. Specifically, the printing roller surface is provided with raised patterns corresponding to the contour of the frame-shaped mark 104. During the rotation of the printing roller, the cured adhesive is first picked up through the adhesive trough, and then excess adhesive is scraped off by a scraper, leaving the adhesive only on the raised patterns on the roller surface. When the printing roller contacts the electrode strip 1, the cured adhesive on the raised surfaces is transferred to the frame-shaped mark 104 area of ​​the electrode, completing the adhesive application. This method provides precise control of the adhesive thickness and high edge neatness of the adhesive layer, making it suitable for applications requiring high consistency in the appearance and thickness of the adhesive layer.

[0036] In some feasible embodiments, the curing colloid is a UV adhesive. In the step of curing the colloid coated on the surface of the electrode strip 1, an ultraviolet light source is used to irradiate the UV adhesive to cure it. Specifically, the UV adhesive, or ultraviolet light curing adhesive, is solvent-free and meets the solvent-free processing requirements of solid electrodes. The curing device uses an ultraviolet LED light source that can output ultraviolet light of a specific wavelength. When the coated electrode passes through the ultraviolet light irradiation area, the UV adhesive absorbs the ultraviolet light energy and initiates a polymerization reaction, completing curing in a short time. The curing speed is fast, requiring no long waiting time, and can match the production line cycle of high-speed conveyor belts. Furthermore, the curing process involves no solvent evaporation, resulting in a clean and environmentally friendly production environment.

[0037] In some feasible embodiments, after each side is laser-cleaned and before the curing adhesive is applied, the surface is dusted to remove dust and debris generated during laser cleaning. Specifically, a small amount of material dust that is vaporized and stripped off is generated during the laser cleaning process. If it remains on the electrode surface, it will affect the adhesion and insulation performance of the adhesive layer. Therefore, a dust removal component 14 is installed between the laser cleaning station and the adhesive application station, or on the side opposite to the laser cleaning station. The dust and debris generated during laser cleaning are thoroughly removed by negative pressure suction or ion air blowing, ensuring the cleanliness of the electrode adhesive surface and improving the bonding reliability between the adhesive layer and the electrode.

[0038] Reference Figure 3 and Figure 4 As shown, this embodiment of the invention also provides a high-speed solid electrode coating equipment for implementing the above-mentioned high-speed solid electrode coating method. The high-speed solid electrode coating equipment is provided with an unwinding assembly 2, an automatic tape splicing assembly 3, a deviation correction assembly 4, a tension control assembly 5, a first laser cleaning assembly 6, a first coating assembly 7, a first curing assembly 8, a second laser cleaning assembly 9, a second coating assembly 10, a second curing assembly 11, a pressing roller assembly 12, and a post-processing assembly 13 along the electrode material conveying path 1.

[0039] The unwinding assembly 2 is located at the upstream end of the line and is used to release the electrode material rolls and continuously output the rolled electrode material strip 1 to the downstream process. The unwinding assembly 2 is equipped with an air shaft and an unwinding motor, which can be adapted to material rolls with different inner diameters and can adjust the unwinding speed to match the running rhythm of the entire production line.

[0040] The automatic tape splicing assembly 3 is positioned downstream of the unwinding assembly 2 and upstream of the correction assembly 4 along the tape conveying direction. It is used for automatic splicing of new and old electrode rolls without stopping the machine. When the current roll is about to run out, the automatic tape splicing assembly 3 can automatically splice the head of the new roll with the tail of the old roll, realizing roll changing without stopping the machine, avoiding production interruptions during roll changing, and further improving the continuous operation time and production efficiency of the production line.

[0041] The correction component 4 is located downstream of the automatic tape-jointing component 3 and is used to correct the lateral positional deviation of the electrode strip 1. The correction component 4 uses photoelectric or visual detection to identify the edge position of the electrode strip 1 in real time, and corrects the lateral positional deviation of the electrode strip 1 by adjusting the position of the guide roller, so as to ensure that the electrode enters the laser cleaning station with accurate positioning.

[0042] The tension control component 5 is located downstream of the correction component 4 and is used to control the constant tension conveying of the electrode strip 1. The tension control component 5 includes a tension detection sensor and a tension adjustment roller. By adjusting the unwinding speed and roller group position through real-time feedback, it controls the constant tension conveying of the electrode strip 1, avoiding slack or overstretching of the strip and ensuring processing accuracy.

[0043] The first laser cleaning component 6 is located downstream of the tension control component 5 and is used to perform laser cleaning on the surface of the first cleaning and coating area of ​​the electrode strip 1 to clean out frame-shaped marks 104 on the first surface. The first laser cleaning component 6 includes a laser, a scanning galvanometer and a focusing optical path. The frame size and scanning parameters for cleaning can be set by the control system, and a precise laser scanning path can be output to form regular frame-shaped marks 104 on the electrode surface.

[0044] The first adhesive coating component 7 is located downstream of the first laser cleaning component 6 and is used to apply cured adhesive along the frame-shaped marks 104 on the first surface. The first adhesive coating component 7 is set in accordance with the conveying path of the electrode strip 1 and can complete online adhesive coating during the continuous conveying of the strip without stopping the machine.

[0045] The first curing component 8 is located downstream of the first coating component 7 and is used to cure the curing colloid coated on the first side of the electrode strip 1. The irradiation area of ​​the first curing component 8 covers the coating range of the electrode, which can ensure that the colloid is cured after passing through the curing area to form a stable adhesive layer structure.

[0046] The second laser cleaning component 9 is located downstream of the first curing component 8 and is used to perform laser cleaning on the surface of the second side of the electrode strip 1, so as to clean out frame-shaped marks 104 on the second side. The second laser cleaning component 9 and the first laser cleaning component 6 correspond to the two surfaces of the electrode, respectively. The orientation of the electrode strip 1 is adjusted by the transition roller 15 so that the second side faces the light-emitting side of the second laser cleaning component 9, thereby completing the cleaning operation of the second side.

[0047] The second adhesive application assembly 10 is located downstream of the second laser cleaning assembly 9 and is used to apply cured adhesive along the frame-shaped marks 104 on the second surface. The second adhesive application assembly 10 adopts the same configuration as the first adhesive application assembly 7 to ensure the accuracy and consistency of double-sided adhesive application.

[0048] The second curing component 11 is located downstream of the second coating component 10 and is used to cure the curing adhesive coated on the second side of the electrode strip 1; after the second side is cured, the double-sided coating process of the electrode strip 1 is completed.

[0049] The pressing roller assembly 12 is located downstream of the second curing assembly 11 and is used to press the electrode strip 1 that has completed double-sided adhesive coating and curing to make the adhesive layer bond more tightly with the electrode substrate, while ensuring the flatness of the electrode and improving the quality of the finished product.

[0050] The post-processing component 13 is located downstream of the pressing roller assembly 12 and is used to perform final finished product processing on the electrode strip 1 after double-sided coating, curing and pressing, and output a product form that meets production requirements.

[0051] In some feasible embodiments, the first coating assembly 7 and the second coating assembly 10 are each independently a dispensing machine coating unit, a roller-pressed slit coating unit, or a roller-printed coating unit. The roller-pressed slit coating unit includes a high-speed pressure roller with a slit on its outer circumference matching the contour of the frame mark 104. An adhesive supply channel is provided inside the high-speed pressure roller to evenly deliver the cured adhesive to the slit, completing the coating process as the roller rotates. The roller-printed coating unit includes a printing transfer roller, used in conjunction with an adhesive trough and a scraping mechanism, to apply the cured adhesive to the electrode surface via transfer. These three coating units can be flexibly selected according to production needs, or installation interfaces can be reserved on the same equipment for quick model changeover.

[0052] In some feasible embodiments, the post-processing component 13 is either a cutting module or a rewinding module. When the equipment is configured for single-sheet output mode, the post-processing component 13 is a cutting module, which uses a high-precision cutting die or laser cutting method to cut the electrode strip 1 into single solid electrode sheets, outputting single sheet finished products. When the equipment is configured for roll-to-roll production mode, the post-processing component 13 is a rewinding module, which includes a winding shaft and a winding motor, and winds the electrode strip 1 into finished product rolls, outputting roll-shaped finished products. The two modules can be installed interchangeably, allowing the equipment to adapt to different production modes and improving the equipment's versatility.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for coating high-speed solid-state electrodes, characterized in that, Includes the following steps: Unwind the electrode strip, which is divided into a full tab area, a cleaning and coating area and a foil blank area along its width direction. The surface of the cleaning and coating area is a cleaning layer that can be removed by laser. The electrode strip is subjected to deviation correction and tension control; Laser cleaning is performed on the first side of the electrode strip to clean out frame-shaped marks on the surface of the cleaning and coating area on the first side. Apply cured colloid along the frame-shaped marks on the first surface; The curing colloid coated on the first surface is cured; Laser cleaning is performed on the second side of the electrode strip to clean frame-shaped marks on the surface of the cleaning and coating area on the second side. Apply cured colloid along the frame-shaped marks on the second surface; The curing colloid applied to the second surface is cured; Roller pressing is performed on the electrode strips that have completed double-sided adhesive coating and curing; The electrode strip is cut to obtain a single solid electrode; or the electrode strip is rewound to obtain a coated electrode roll.

2. The high-speed solid electrode coating method according to claim 1, characterized in that, The method of applying the cured adhesive along the frame-shaped mark is as follows: a dispensing machine is used to continuously apply the cured adhesive within the frame-shaped mark, and the dispensing head of the dispensing machine moves synchronously with the conveying speed of the electrode material strip and continuously dispenses adhesive.

3. The high-speed solid electrode coating method according to claim 1, characterized in that, The method of applying the cured adhesive along the frame-shaped mark is as follows: a high-speed pressure roller is used to apply adhesive through the roller gap. The roller surface of the high-speed pressure roller has an adhesive outlet gap that matches the outline of the frame-shaped mark. During the conveying of the electrode material strip, the high-speed pressure roller synchronously rolls out the adhesive, and the cured adhesive is evenly applied along the adhesive outlet gap into the frame-shaped mark. At the same time, the high-speed pressure roller rolls and conveys the electrode material strip.

4. The high-speed solid electrode coating method according to claim 1, characterized in that, The curing colloid is applied along the frame-shaped marks by using a printing roller to transfer the curing colloid to the frame-shaped mark area.

5. The high-speed solid electrode coating method according to any one of claims 1 to 4, characterized in that, The curing colloid is a UV adhesive. In the step of curing the curing colloid coated on the surface of the electrode strip, an ultraviolet light source is used to irradiate the UV adhesive to cure it.

6. The high-speed solid electrode coating method according to any one of claims 1 to 4, characterized in that, After each side is laser cleaned and before the curing colloid is applied, the surface is dusted to remove dust and debris generated during laser cleaning.

7. A high-speed solid-state electrode coating device, characterized in that, For implementing the high-speed solid-state electrode coating method as described in any one of claims 1 to 6, the high-speed solid-state electrode coating equipment comprises: [the following components are sequentially arranged along the electrode material conveying path] Unwinding assembly for releasing the electrode stock; A correction component is used to correct the lateral positional offset of the electrode strip; Tension control components are used to control the constant tension conveying of the electrode strip; The first laser cleaning component is used to perform laser cleaning on the surface of the first side of the electrode strip cleaning adhesive area to clean out frame-shaped marks on the first side. The first adhesive application assembly is used to apply cured adhesive along the frame-shaped marks on the first surface; The first curing component is used to cure the curing colloid coated on the first side of the electrode strip; The second laser cleaning component is used to perform laser cleaning on the surface of the second side of the electrode strip cleaning adhesive area to clean out frame-shaped marks on the second side. The second adhesive application assembly is used to apply cured adhesive along the frame-shaped marks on the second surface; The second curing component is used to cure the curing colloid coated on the second side of the electrode strip; The pressing roller assembly is used to press and press the electrode strip that has been coated and cured with adhesive on both sides. A post-processing component is located downstream of the pressing roller assembly.

8. The high-speed solid electrode coating equipment according to claim 7, characterized in that, The first and second glue-coating components are each independently any one of a dispensing machine glue-coating unit, a roller press slit glue-coating unit, or a roller printing glue-coating unit; The roller-pressed slit adhesive application unit includes a high-speed roller, and the outer peripheral surface of the high-speed roller is provided with an adhesive dispensing slit that matches the outline of the frame-shaped mark. The roller printing and coating unit includes a printing transfer roller for transferring the cured adhesive to the frame-shaped mark area.

9. The high-speed solid electrode coating equipment according to claim 7, characterized in that, It also includes an automatic belt splicing component, which is located downstream of the unwinding component and upstream of the correction component along the belt conveying direction, for automatic splicing of new and old electrode rolls without stopping the machine.

10. The high-speed solid electrode coating equipment according to claim 7, characterized in that, The post-processing component is a cutting module or a rewinding module; the cutting module is used to cut the electrode strip into single solid electrode sheets, and the rewinding module is used to rewind the electrode strip into finished coils.

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