Pole piece cleaning device and pole piece slitting system

Abstract

The utility model relates to the technical field of battery pole piece processing, and provides a pole piece cleaning device and a pole piece slitting system.The pole piece cleaning device comprises a plasma generator, a laser generator and a first image acquisition device, the plasma generator is used for generating plasma jet flow, the laser generator is connected with the plasma generator, and the first image acquisition device is connected with the laser generator. The laser generator is located on an ejection path of the plasma jet, the plasma jet and a laser beam generated by the laser generator are used for cleaning the surface of the pole piece, and the first image acquisition device is used for acquiring a surface image of the cleaned pole piece. The laser beam can melt the burrs, the melted burrs are more easily removed by the plasma jet, under the mutual cooperation of the laser beam and the plasma beam, the burr removal effect can be improved, the situation that the burrs on the surface of the pole piece are not thoroughly treated is avoided, the risk of short circuit in a battery cell is reduced, and the safety and cycle life of the battery are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery electrode processing technology, and more specifically, to an electrode cleaning device and an electrode slitting system. Background Technology

[0002] After the battery electrodes are cut, burrs may remain on their surface. These burrs may puncture the protective film between the positive and negative electrodes, causing a short circuit inside the battery and posing safety hazards such as fire and explosion. Therefore, how to effectively deal with the burrs on the surface of the battery electrodes has become an urgent problem to be solved. Utility Model Content

[0003] The present invention aims to solve the problem that burrs in the prior art or related technologies can easily puncture the protective film in the battery, thereby easily causing internal short circuits in the battery and posing safety hazards such as fire and explosion.

[0004] In a first aspect, this application proposes an electrode cleaning apparatus, which includes: a plasma generator, a laser generator, and a first image acquisition device. The plasma generator is used to generate a plasma jet, and the laser generator is connected to the plasma generator and located in the emission path of the plasma jet. The plasma jet and the laser beam generated by the laser generator are used to clean the surface of the electrode. The first image acquisition device is used to acquire an image of the surface of the cleaned electrode.

[0005] Laser beams can melt burrs, and the melted burrs are easier to remove by plasma jets. When laser beams and plasma beams work together, they can improve the burr removal effect, avoid incomplete burr removal on the electrode surface, significantly reduce the risk of short circuits inside the cell, improve battery safety and cycle life, and provide reliable technical support for the manufacture of high-energy-density batteries.

[0006] After surface treatment of the electrode sheet, the burr size is monitored using an image acquisition device, which can comprehensively evaluate the treatment effect, promptly detect and report any abnormalities, effectively ensure the complete removal of burrs on the electrode sheet surface, significantly improve the stability of product quality, and provide a reliable foundation for subsequent production processes.

[0007] In some embodiments, the electrode cleaning apparatus further includes a driving device connected to a plasma generator, the driving device being used to adjust the position of the plasma generator relative to the electrode.

[0008] Adjusting the positions of the plasma generator and laser generator for electrodes of different specifications can match the positions of the plasma generator and laser generator with the specifications of the electrodes. This helps to improve the removal effect of the plasma generator and laser generator on the surface burrs of the electrodes and further reduces the risk of internal short circuits in the battery cell.

[0009] In some embodiments, the driving device includes a bracket, a lifting assembly, and a rotating assembly. The plasma generator is connected to the bracket, and both the lifting assembly and the rotating assembly are connected to the bracket. The lifting assembly is used to drive the plasma generator to move up and down relative to the electrode, and the rotating assembly is used to drive the plasma generator to rotate relative to the electrode.

[0010] Adjusting the height and angle of the electrodes according to their different specifications can improve the removal effect of plasma generators and laser generators on the surface burrs of the electrodes, and further reduce the risk of internal short circuits in the battery cell.

[0011] In some embodiments, the electrode cleaning apparatus further includes: a second image acquisition device, the second image acquisition device being used to acquire a surface image of the electrode, and the driving device being electrically connected to the second image acquisition device.

[0012] By automatically adjusting the position and tilt angle of the plasma generator and laser generator, electrodes of different specifications can be precisely matched, ensuring the uniformity and consistency of the surface treatment of the electrodes. Furthermore, this automatic adjustment function reduces the need for manual intervention, improves production efficiency, and lowers the risk of uneven processing or electrode damage caused by improper positioning of the plasma generator and laser generator, thereby improving product quality and equipment operating efficiency.

[0013] In some embodiments, the power of the plasma generator and the laser generator can be adjusted, and at least one of the plasma generator and the laser generator is electrically connected to the second image acquisition device.

[0014] By electrically connecting at least one of the plasma generator and the laser generator to the second image acquisition device, the power of at least one of the plasma generator and the laser generator can be automatically adjusted. This intelligent adjustment significantly improves the accuracy and reliability of burr processing and reduces quality fluctuations caused by improper manual adjustment.

[0015] In some embodiments, under the drive of the driving device, the distance between the laser generator and the electrode is greater than or equal to 5 mm and less than or equal to 15 mm.

[0016] Within the aforementioned range, the laser generator can be adapted to a wide range of electrode specifications, which helps to improve the matching degree between the laser generator and different electrode specifications, thereby improving the deburring effect on different electrode specifications.

[0017] In some embodiments, the electrode cleaning apparatus further includes a second image acquisition device for acquiring a surface image of the cleaned electrode.

[0018] By monitoring burr size using image acquisition devices before and after surface treatment of the electrode sheets, the processing effect can be comprehensively evaluated, and any abnormalities can be detected and reported in a timely manner. This closed-loop control mechanism effectively removes surface burrs from the electrode sheets, significantly improving product quality stability and providing a reliable foundation for subsequent production processes. Furthermore, closed-loop control facilitates tracing the source of problems, optimizing processing parameters, and further enhancing overall production efficiency and product consistency.

[0019] In some embodiments, the plasma generator has a jet outlet, and the plasma generator includes a temperature sensing element, a discharge section, and a pressure controller. The temperature sensing element is located at the jet outlet, and the pressure controller is used to convert electrical energy into heat energy so that the pressure controller provides heat to the discharge section. The pressure controller is electrically connected to the temperature sensing element.

[0020] The power of the pressure controller can be adjusted according to the temperature of the plasma jet outlet, thereby achieving temperature control of the plasma jet and adjusting the deburring temperature. Depending on the electrode specifications, the deburring effect can be improved by adjusting the deburring temperature.

[0021] In some embodiments, a laser generator is disposed at the jet outlet.

[0022] The plasma jet passes through a laser generator, and the laser beam generated by the laser generator acts on the same position on the electrode surface as the plasma jet, which helps to improve the removal of burrs on the electrode surface.

[0023] In some embodiments, the minimum power of the laser generator is 400W, and the maximum power of the laser generator is 1000W.

[0024] In some embodiments, the width of the laser beam acting on the electrode is greater than or equal to 50 mm; and / or the cleaning speed of the laser generator on the electrode is S, 10 mm / s ≤ S ≤ 300 mm / s.

[0025] Secondly, this application provides an electrode slitting system, which includes a die-cutting assembly and an electrode cleaning device as described above. The die-cutting assembly is used to cut the electrode, and the electrode cleaning device is used to clean the surface of the cut electrode.

[0026] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 A schematic diagram of the structure of the plasma generator and the laser generator in an embodiment of this utility model is shown;

[0029] Figure 2 A schematic diagram of the electrode cleaning device in an embodiment of this utility model is shown;

[0030] Figure 3 A schematic diagram of the electrode slitting system in an embodiment of this utility model is shown.

[0031] Figure label:

[0032] 10. Electrode slitting system; 100. Electrode cleaning device; 110. Plasma generator; 111. Jet outlet; 112. Temperature detection element; 113. Discharge section; 114. Pressure controller; 115. Gas flow controller; 116. Gas pipeline; 120. Laser generator; 130. Drive device; 131. Support; 132. Lifting assembly; 133. Rotating assembly; 140. Second image acquisition device; 150. First image acquisition device; 200. Die-cutting assembly. Detailed Implementation

[0033] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0035] Burrs on the surface of battery electrodes are usually generated during the cutting process. For example, molten bead burrs during laser die-cutting of battery electrodes, or burrs caused by improper blade spacing or blade wear during pre-cutting, slitting, and winding finishing. Burrs are sharp metallic impurities present on the edge of the electrode and may puncture the separator in the battery, causing an internal short circuit.

[0036] In related technologies, when it is necessary to remove burrs from the surface of battery electrodes, chemical reagents or electrolytes are usually used. However, these reagents or electrolytes may contaminate the electrode surface, thus affecting battery performance. Alternatively, plasma nozzles can be used to remove burrs from the battery electrode surface. However, the effectiveness of plasma nozzles in removing burrs is limited; after the deburring step, some burrs may still remain on the battery electrode surface, posing a risk of incomplete burr removal.

[0037] Based on the above considerations, in order to improve the removal effect of burrs on the electrode surface, this application proposes an electrode cleaning device. The electrode cleaning device is equipped with a plasma generator and a laser generator. The plasma generator is used to generate a plasma jet, and the laser generator can emit a laser beam. The plasma jet and the laser beam act together on the electrode surface, causing the electrode surface to generate a large tensile stress, thereby improving the treatment effect of burrs on the electrode surface.

[0038] Combination Figure 2 and Figure 3 As shown, the electrode cleaning device 100 disclosed in this application embodiment is used in the electrode slitting system 10, which is used to slit and clean the electrode surface during the lithium battery processing.

[0039] The electrode slitting system 10 includes a die-cutting assembly 200 and an electrode cleaning device 100. The die-cutting assembly 200 can use laser slitting technology to cut the electrode. The cut electrode is transported to the vicinity of the electrode cleaning device 100, where the electrode cleaning device 100 cleans the surface of the cut electrode to remove burrs. The electrode slitting system 10 also includes an electrode conveying structure, which consists of a conveyor belt, rollers, or a robotic arm. This structure is responsible for the conveying and positioning of the electrode between the various mechanisms, ensuring the continuity and stability of the entire processing flow.

[0040] Combination Figure 1 , Figure 2 and Figure 3 As shown, the electrode cleaning apparatus 100 includes a plasma generator 110, a laser generator 120, and a first image acquisition device 150. The plasma generator 110 is used to generate a plasma jet. The laser generator 120 is connected to the plasma generator 110 and is located in the emission path of the plasma jet. The plasma jet and the laser beam generated by the laser generator 120 are used to clean the surface of the electrode. The first image acquisition device 150 is used to acquire an image of the surface of the cleaned electrode.

[0041] When a working gas is introduced into the plasma generator 110, the discharge section 113 in the plasma generator 110 generates plasma under the influence of the airflow and electric field. The plasma is ejected in the form of a jet. The mechanism of plasma jet deburring is to utilize the high-voltage discharge effect generated by plasma under high voltage to create a localized high-temperature and high-energy environment in the treatment area. When the plasma jet interacts with the electrode surface, the burrs are physically removed through the generated mechanical stress (such as tensile stress) and thermal effect. Specifically, the high-energy ion flow generated by the plasma nozzle acts directly on the electrode surface and end face. Through mechanical impact and localized stress concentration, the burr material is broken or detached, thereby achieving precise burr removal. Compared with traditional chemical or mechanical treatment methods, plasma treatment has the characteristics of high precision and low damage, and can effectively avoid excessive damage to the electrode substrate.

[0042] The laser generator 120 can generate a laser beam. When the laser beam irradiates the surface of the electrode, the laser beam melts or vaporizes the metal burrs through instantaneous high temperature, thereby achieving the purpose of removing the burrs.

[0043] In this scheme, the laser generator 120 is located on the emission path of the plasma jet, so that the plasma jet and the laser beam can work together to remove burrs from the same area on the electrode surface.

[0044] Laser beams can melt burrs, and the melted burrs are easier to remove with plasma beams. When laser beams and plasma beams work together, they can improve the burr removal effect, avoid incomplete burr removal on the electrode surface, significantly reduce the risk of short circuits inside the cell, improve battery safety and cycle life, and provide reliable technical support for the manufacture of high-energy-density batteries.

[0045] After surface treatment of the electrode sheet, the burr size is monitored using an image acquisition device, which can comprehensively evaluate the treatment effect, promptly detect and report any abnormalities, effectively ensure the complete removal of burrs on the electrode sheet surface, significantly improve the stability of product quality, and provide a reliable foundation for subsequent production processes.

[0046] Combination Figure 1 and Figure 2 As shown, in some embodiments, the electrode cleaning apparatus 100 further includes a driving device 130, which is connected to the plasma generator 110 and is used to adjust the position of the plasma generator 110 relative to the electrode.

[0047] The drive device 130 can drive the plasma generator 110 to move, thereby changing the relative position of the plasma generator 110 and the electrode.

[0048] For electrodes of different specifications, the shape and size of the electrodes may be different. If the position of the plasma generator 110 remains unchanged, the plasma generator 110 will have different surface treatment effects on electrodes of different specifications, resulting in inconsistent burr removal effects on the electrode surface, making it difficult to ensure the burr removal effect.

[0049] Therefore, to improve the burr removal effect, in this embodiment, the plasma generator 110 is connected to the driving device 130. The driving device 130 can change the position of the plasma generator 110 relative to the electrode. For electrode sheets of different specifications, the plasma generator 110 can be adjusted to the corresponding position. Since the laser generator 120 is mounted on the plasma generator 110, when the position of the laser generator 120 changes, the position of the laser generator 120 changes synchronously.

[0050] Adjusting the positions of the plasma generator 110 and the laser generator 120 for electrodes of different specifications can match the positions of the plasma generator 110 and the laser generator 120 with the specifications of the electrodes. This helps to improve the removal effect of the plasma generator 110 and the laser generator 120 on the surface burrs of the electrodes, and further reduces the risk of internal short circuits in the battery cell.

[0051] Combination Figure 1 and Figure 2 As shown, in some embodiments, the driving device 130 includes: a bracket 131, a lifting assembly 132, and a rotating assembly 133. The plasma generator 110 is connected to the bracket 131. The lifting assembly 132 and the rotating assembly 133 are both connected to the bracket 131. The lifting assembly 132 is used to drive the plasma generator 110 to rise and fall relative to the electrode, and the rotating assembly 133 is used to drive the plasma generator 110 to rotate relative to the electrode.

[0052] The lifting assembly 132 and the rotating assembly 133 are mounted on the bracket 131. When the lifting assembly 132 and the rotating assembly 133 are mounted on the same component, the relative positions of the lifting assembly 132 and the rotating assembly 133 are not easily changed, so the position of the plasma generator 110 can be accurately adjusted.

[0053] The lifting assembly 132 can drive the plasma generator 110 to move up and down, thereby adjusting the height of the plasma generator 110 and the height of the plasma generator 110 relative to the electrode. For electrode of different specifications, the lifting assembly 132 drives the plasma generator 110 to move up and down relative to the electrode, changing the position of the plasma generator 110 relative to the electrode, so that the height of the plasma generator 110 matches the electrode of different specifications.

[0054] For example, the lifting assembly 132 can be a combination of a motor and a ball screw, or the lifting assembly 132 can be a structure of a motor, gears and racks. Of course, any structure that can drive the plasma generator 110 to lift is within the scope of protection of this application.

[0055] The rotating assembly 133 can drive the plasma generator 110 to rotate, thereby adjusting the angle of the plasma generator 110 relative to the electrode, so that the angle of the plasma generator 110 matches the electrode of different specifications.

[0056] Adjusting the height and angle of the electrodes according to their different specifications helps improve the removal effect of burrs on the electrode surface by the plasma generator 110 and the laser generator 120, further reducing the risk of short circuits inside the battery cell.

[0057] For example, the rotating assembly 133 can be a combination of a motor and a drive shaft, with the plasma generator 110 fixed on the drive shaft and the motor driving the drive shaft to rotate. Alternatively, the rotating assembly 133 can also drive the plasma generator 110 to rotate via a gear set. Of course, any structure capable of driving the plasma generator 110 to rotate is within the scope of protection of this application.

[0058] It should be noted that the lifting component 132 in this embodiment can drive the plasma generator 110 and the rotating component 133 to move up and down synchronously.

[0059] Combination Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the electrode cleaning apparatus 100 further includes a second image acquisition device 140, which is used to acquire surface images of the electrode, and the driving device 130 is electrically connected to the second image acquisition device 140.

[0060] The second image acquisition device 140 is used to acquire images of the electrode surface, so that the second image acquisition device 140 can acquire the size and position of the burrs on the electrode surface.

[0061] The drive device 130 is electrically connected to the second image acquisition device 140. When the second image acquisition device 140 acquires the size and position of the burrs on the electrode surface, it can transmit the acquired image information to the controller. The controller controls the drive device 130 to start running according to the image information, so that the drive device 130 adjusts the position and angle of the plasma generator 110.

[0062] By automatically adjusting the position and rotation angle of the plasma generator 110 and the laser generator 120, electrodes of different specifications can be precisely matched, ensuring the uniformity and consistency of the electrode surface treatment. Furthermore, this automatic adjustment function reduces the need for manual intervention, improves production efficiency, and lowers the risk of uneven processing or electrode damage caused by improper positioning of the plasma generator 110 and the laser generator 120, thereby improving product quality and equipment operating efficiency.

[0063] By monitoring burr size using image acquisition devices before and after electrode surface treatment, the processing effect can be comprehensively evaluated, and any abnormalities can be detected and reported promptly. This closed-loop control mechanism effectively ensures the complete removal of burrs from the electrode surface, significantly improving product quality stability and providing a reliable foundation for subsequent production processes. Furthermore, closed-loop control facilitates tracing the source of problems, optimizing processing parameters, and further enhancing overall production efficiency and product consistency.

[0064] In some embodiments, the power of the plasma generator 110 and the laser generator 120 can be adjusted, and at least one of the plasma generator 110 and the laser generator 120 is electrically connected to the second image acquisition device 140.

[0065] The power of the plasma generator 110 can be adjusted to match the power of different electrode specifications. Similarly, the power of the laser generator 120 can also be adjusted to match the power of different electrode specifications.

[0066] At least one of the plasma generator 110 and the laser generator 120 is electrically connected to the second image acquisition device 140. When the second image acquisition device 140 acquires the size and position of the burrs on the electrode surface, it can transmit the acquired image information to the controller. The controller adjusts the power of at least one of the plasma generator 110 and the laser generator 120 according to the image information.

[0067] By electrically connecting at least one of the plasma generator 110 and the laser generator 120 to the second image acquisition device 140, the power of at least one of the plasma generator 110 and the laser generator 120 can be automatically adjusted. This intelligent adjustment significantly improves the accuracy and reliability of burr processing and reduces quality fluctuations caused by improper manual adjustment.

[0068] In some embodiments, under the drive of the drive device 130, the distance between the laser generator 120 and the electrode surface is greater than or equal to 5 mm and less than or equal to 15 mm.

[0069] The height adjustment range of the laser generator 120 from the electrode surface is between 5mm and 15mm, and the laser generator 120 has a large height adjustment range.

[0070] Within the aforementioned range, the laser generator 120 can be adapted to a wide range of electrode specifications, which helps to improve the matching degree between the laser generator 120 and electrode specifications, thereby improving the deburring effect on electrode specifications.

[0071] For example, the first image acquisition device 150 and the second image acquisition device 140 can be CCD (Charge-Coupled Device) cameras.

[0072] like Figure 1 As shown, in some embodiments, the plasma generator 110 has a jet outlet 111. The plasma generator 110 includes a temperature detection element 112, a discharge section 113, and a pressure controller 114. The temperature detection element 112 is located at the jet outlet 111. The pressure controller 114 is used to convert electrical energy into heat energy so that the pressure controller 114 provides heat to the discharge section 113. The pressure controller 114 is electrically connected to the temperature detection element 112.

[0073] The pressure controller 114 converts electrical energy into heat energy. When the heat energy is transferred to the discharge section 113, the heat carried by the plasma jet is discharged through the jet outlet 111. The temperature sensor 112 can detect the temperature at the jet outlet 111, and the controller can control the power of the pressure controller 114 according to the temperature collected by the temperature sensor 112.

[0074] Based on the temperature of the jet outlet 111, the power of the pressure controller 114 can be adjusted accordingly to achieve temperature control of the plasma jet, thereby adjusting the burr treatment temperature. Depending on the electrode sheet of different specifications, the burr treatment effect can be improved by adjusting the burr treatment temperature.

[0075] like Figure 1 As shown, in some embodiments, the laser generator 120 is disposed at the jet outlet 111.

[0076] The laser generator 120 is installed at the jet outlet 111 of the plasma generator 110. When the plasma jet passes through the jet outlet 111, the plasma jet will pass through the laser generator 120. The laser beam generated by the laser generator 120 and the plasma jet act on the same position on the electrode surface, which is beneficial to improving the treatment effect of burrs on the electrode surface.

[0077] Of course, in other embodiments, the laser generator 120 may also be integrated inside the plasma generator 110.

[0078] In some embodiments, the minimum power of the laser generator 120 is 400W, and the maximum power of the laser generator 120 is 1000W.

[0079] The power of the laser generator 120 can be adjusted, and the power of the laser generator 120 is between 400W and 1000W.

[0080] The laser generator 120 has a wide power adjustment range, which allows the power of the laser generator 120 to be adapted to different specifications of electrodes, which is beneficial to improving the treatment effect of surface burrs on electrodes of different specifications.

[0081] For example, the power of the laser generator 120 is 400W, 500W, 800W or 1000W.

[0082] In some embodiments, the width of the laser beam acting on the electrode surface is greater than or equal to 50 mm; and / or the cleaning speed of the laser generator 120 on the electrode surface is S, where 10 mm / s ≤ S ≤ 300 mm / s.

[0083] The width of the laser beam acting on the electrode surface is greater than or equal to 50 mm. The width of the laser beam acting on the electrode surface is sufficient to cover most of the burrs, which helps to improve the efficiency of the laser beam in removing burrs.

[0084] In the embodiments of this application, an electrode slitting system 10 is provided. The slitting electrode is processed by a plasma generator 110. The plasma generates high voltage, which causes a large tensile stress on the surface of the electrode. Through mechanical effect, it plays a major role in removing burrs, thereby eliminating metal burrs on the end face and plane of the electrode and reducing the risk of short circuit inside the cell.

[0085] After the electrode is cut, the second image acquisition device 140 monitors the size of the electrode end face and the plane burrs, and automatically adjusts the laser beam power of the plasma generator 110.

[0086] The plasma generator 110 in the electrode cleaning device 100 can automatically adjust its position according to the electrode position and can be flipped at different angles.

[0087] After the electrode is processed by the plasma generator 110, the first image acquisition device 150 monitors the size of the burrs on the end face and plane of the electrode again to achieve closed-loop control of burrs.

[0088] The technical effects that the above solutions can achieve are as follows:

[0089] High-efficiency burr removal is achieved by using the high voltage generated by the plasma generator 110, which causes large tensile stress on the electrode connection plane. This mechanical effect separates and removes the metal burrs on the end face and plane of the electrode from the substrate. Compared with traditional chemical or electrolytic treatments, this method is more efficient and achieves better cleanliness, removing burrs more thoroughly.

[0090] To reduce the risk of short circuits in battery cells, metal burrs on the surface of the slit electrodes can puncture the separator, causing internal short circuits and potentially leading to battery safety issues. This device significantly reduces the risk of internal short circuits by efficiently removing burrs from the electrode end faces and planes, thus improving battery safety and reliability.

[0091] To avoid chemical contamination, traditional deburring methods typically involve chemical reagents or electrolytes, which may contaminate the electrode surface and affect battery performance. Plasma jet and laser beam deburring, however, are physical methods that avoid chemical contamination and maintain the cleanliness of the electrode surface.

[0092] To improve processing accuracy, the tensile stress generated during the plasma generator 110 process can precisely separate burrs from the substrate, thereby improving the flatness and consistency of the electrode surface and improving processing accuracy.

[0093] With strong applicability, this method is applicable to electrode sheets of different materials, especially metal electrode sheets, and can effectively deal with various burr problems generated during the slitting process, thus having a wide range of applications.

[0094] This system improves the flexibility and adaptability of deburring. By automatically adjusting the position and tilt angle of the plasma generator 110, it can precisely match electrodes of different specifications, ensuring the uniformity and consistency of plasma processing. Furthermore, this automatic adjustment function reduces the need for manual intervention, improves production efficiency, and lowers the risk of uneven processing or electrode damage caused by improper positioning of the plasma generator 110, thereby enhancing product quality and equipment operating efficiency.

[0095] This system achieves intelligent and precise deburring. An image acquisition device monitors the burr size of the electrode in real time and dynamically adjusts the laser beam power of the plasma generator 110 based on actual conditions. This ensures moderate deburring intensity, avoiding both under-processing (resulting in burr residue) and over-processing (potential electrode damage). This intelligent adjustment significantly improves the precision and reliability of deburring, reduces quality fluctuations caused by improper manual adjustments, and extends the equipment's lifespan.

[0096] A complete closed-loop control system for burr removal quality was established. By monitoring burr size before and after processing using image acquisition devices, the processing effect can be comprehensively evaluated, and any abnormalities can be detected and reported promptly. This closed-loop control mechanism effectively ensures the complete removal of burrs from the electrode surface, significantly improving product quality stability and providing a reliable foundation for subsequent production processes. Furthermore, closed-loop control facilitates tracing the source of problems, optimizing processing parameters, and further improving overall production efficiency and product consistency.

[0097] The electrode cleaning device 100 includes a second image acquisition device 140 after laser die cutting, a plasma generator 110, a laser generator 120, a first image acquisition device 150 after deburring, and an electrode conveying structure, etc.

[0098] The second image acquisition device 140 is used to perform preliminary detection of burrs on the electrode sheet after laser die-cutting. It identifies the burr size on the electrode sheet surface through a CCD camera and image processing system to ensure the accuracy of subsequent processing.

[0099] The plasma generator 110 consists of a plasma generating device, electrodes, a gas flow controller 115, a high-voltage controller, and a display screen. The high-voltage controller converts electrical energy into heat energy, and the operating ambient temperature is room temperature. Under the influence of airflow and an electric field, the discharge section 113 generates plasma. A working gas (such as air, O2, Ar, CF4, or SF6) is introduced through the gas pipe 116. The plasma is ejected from the nozzle in the form of a jet. The laser generator 120 has a power of 400W to 1000W (adjustable), a laser beam processing width of 50mm, a processing height of 5mm to 15mm, and a laser beam processing speed of 10mm / s to 300mm / s. Figure 1 The dotted line is used to represent the heat output of the pressure controller 114.

[0100] The first image acquisition device 150 is used to perform secondary inspection on the plasma-treated electrode to ensure that burrs have been effectively removed and the electrode surface meets the process requirements.

[0101] The electrode conveying structure consists of conveyor belts, rollers, or robotic arms, and is responsible for the transfer and positioning of electrodes between various mechanisms, ensuring the continuity and stability of the entire processing flow.

[0102] The mechanism of plasma deburring utilizes the high-voltage discharge effect generated by plasma under high voltage to create a localized high-temperature and high-energy environment in the treatment area. When the plasma interacts with the material surface, the burrs are physically removed through the generated mechanical stress (such as tensile stress) and thermal effect. Specifically, the high-energy ion current generated by the plasma generator 110 acts directly on the electrode surface and end face. Through mechanical impact and localized stress concentration, the burr material fractures or detaches, thereby achieving precise burr removal. Compared with traditional chemical or mechanical treatment methods, plasma treatment features high precision and low damage, effectively avoiding excessive damage to the electrode substrate.

[0103] The characteristics of the processed products include: complete removal of burrs on the electrode end faces and planes, resulting in a smoother surface; the dense layer generated during plasma treatment improves the stability and electrochemical performance of the electrodes; and the precise application of mechanical stress reduces secondary contamination or substrate damage that may occur with traditional processing methods. Furthermore, plasma treatment significantly reduces the risk of internal short circuits within the cell, improving battery safety and cycle life, and providing a reliable technical guarantee for the manufacture of high-energy-density batteries.

[0104] The risks associated with plasma treatment of electrode burrs include material damage, operational safety hazards, and equipment maintenance issues. Improvement measures include: optimizing processing parameters to avoid excessive material damage; requiring operators to wear protective equipment; regularly maintaining the nozzles to ensure stable equipment operation; and strengthening equipment calibration to improve automation accuracy. These measures can significantly reduce risks and improve production safety and efficiency.

[0105] Plasma treatment can efficiently and precisely remove metal burrs from the plane and end faces of electrode sheets, significantly improving the surface quality and uniformity of the electrodes. This method uses the high-pressure tensile stress generated by the plasma nozzle to separate and remove burrs from the substrate through mechanical effects, offering higher efficiency and cleanliness compared to traditional chemical or mechanical treatment methods.

[0106] Secondly, plasma treatment significantly reduces the risk of internal short circuits within the battery cell. Burrs are one of the main causes of short circuits in battery cells. By thoroughly removing metal burrs from the electrode surface, the possibility of the electrode puncturing the separator is reduced, thereby improving the safety and reliability of the battery.

[0107] Furthermore, plasma treatment is a physical method that avoids the contamination problems that may arise from traditional chemical treatments, maintaining the cleanliness of the electrode surface. At the same time, the precision of plasma treatment effectively improves processing accuracy, ensuring the flatness and consistency of the electrode surface.

[0108] Finally, plasma processing technology is applicable to electrode sheets of different materials, demonstrating broad applicability and meeting the deburring requirements after various electrode sheet slitting processes. Through intelligent adjustment and closed-loop control, the reliability and production efficiency of the processing are further improved, providing a reliable technical guarantee for the manufacture of high-energy-density batteries.

[0109] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0110] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electrode cleaning device, characterized in that, include: A plasma generator for generating a plasma jet; A laser generator is connected to the plasma generator and is located in the emission path of the plasma jet. The plasma jet and the laser beam generated by the laser generator are used to clean the surface of the electrode. A first image acquisition device is used to acquire a surface image of the cleaned electrode sheet.

2. The electrode cleaning device according to claim 1, characterized in that, The electrode cleaning device further includes: A driving device, connected to the plasma generator, is used to adjust the position of the plasma generator relative to the electrode.

3. The electrode cleaning device according to claim 2, characterized in that, The driving device includes: A support frame, to which the plasma generator is connected; A lifting assembly is connected to the bracket, and the lifting assembly is used to drive the plasma generator to move up and down relative to the electrode. A rotating assembly, connected to the support, is used to drive the plasma generator to rotate relative to the electrode.

4. The electrode cleaning apparatus according to claim 2, characterized in that, The electrode cleaning device further includes: The second image acquisition device is used to acquire a surface image of the electrode sheet, and the driving device is electrically connected to the second image acquisition device.

5. The electrode cleaning apparatus according to claim 4, characterized in that, The power of the plasma generator and the laser generator can be adjusted, and at least one of the plasma generator and the laser generator is electrically connected to the second image acquisition device.

6. The electrode cleaning apparatus according to claim 2, characterized in that, Under the drive of the driving device, the distance between the laser generator and the electrode is greater than or equal to 5 mm and less than or equal to 15 mm.

7. The electrode cleaning apparatus according to any one of claims 1 to 6, characterized in that, The plasma generator has a jet outlet and includes a temperature detection element, a discharge section, and a pressure controller. The temperature detection element is located at the jet outlet, and the pressure controller is used to convert electrical energy into heat energy so that the pressure controller provides heat to the discharge section. The pressure controller is electrically connected to the temperature detection element.

8. The electrode cleaning apparatus according to claim 7, characterized in that, The laser generator is located at the jet outlet.

9. The electrode cleaning apparatus according to any one of claims 1 to 6, characterized in that, The minimum power of the laser generator is 400W, and the maximum power of the laser generator is 1000W.

10. The electrode cleaning apparatus according to any one of claims 1 to 6, characterized in that, The laser beam acts on the electrode with a width greater than or equal to 50 mm; and / or The cleaning speed of the laser generator on the electrode is S, where 10 mm / s ≤ S ≤ 300 mm / s.

11. An electrode slitting system, characterized in that, include: A die-cutting assembly for cutting electrode sheets; The electrode cleaning apparatus according to any one of claims 1 to 10, wherein the electrode cleaning apparatus is used to clean the surface of the cut electrode.

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