Pole piece dust removal device and battery production system

Abstract

The application relates to a kind of pole piece dust removal device and battery production system, wherein, pole piece dust removal device includes bearing roller, dust sticking roller group and cleaning mechanism, bearing roller is used to tension and transport pole piece, dust sticking roller group is located above bearing roller and is used to adhere to the particle on the surface of pole piece, cleaning mechanism is peripherally arranged in dust sticking roller group and is used to remove the particle on dust sticking roller group;Wherein, cleaning mechanism includes cleaning main body and heating assembly, hot air channel and suction channel isolated from each other are arranged in cleaning main body, and heating assembly is at least partially arranged in hot air channel;The outlet of hot air channel is towards dust sticking roller group to output hot air, and the inlet of suction channel is towards dust sticking roller group to suck particle.The pole piece dust removal device and battery production system described above, utilize hot air channel to output hot air to dust sticking roller group, reduce the adhesion between particle and the adhesive layer of dust sticking roller group by heat energy, then utilize suction channel to suck the particle desorbed on dust sticking roller group, realize the efficient removal and collection of particle.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to an electrode dust removal device and a battery production system. Background Technology

[0002] With the popularization and promotion of new energy vehicles, their charging and discharging performance and range are increasingly attracting attention and importance. Power batteries, a type of rechargeable battery, are the power source for new energy vehicles and are widely used in the field.

[0003] In the processing of lithium battery electrodes, steps such as coating, baking, and cold pressing are typically required. Before cold pressing, the electrode surface is usually cleaned of dust to prevent particles from damaging the electrode during the pressing process. Existing electrode dust removal devices are prone to causing secondary pollution during the dust removal process and have low dust removal efficiency, failing to adequately meet production needs. Utility Model Content

[0004] Therefore, it is necessary to provide an electrode dust removal device and battery production system to address the problems of existing electrode dust removal devices that are prone to secondary pollution and have low dust removal efficiency during the dust removal process.

[0005] An electrode dust removal device includes a support roller, a dust-adhesive roller assembly, and a cleaning mechanism. The support roller is used to tension and transport the electrode. The dust-adhesive roller assembly is located above the support roller and is used to adhere particles to the surface of the electrode. The cleaning mechanism surrounds the dust-adhesive roller assembly and is used to remove particles from the assembly. The cleaning mechanism includes a cleaning body and a heating component. The cleaning body has a mutually isolated hot air channel and a suction channel. The heating component is at least partially located within the hot air channel. The outlet of the hot air channel faces the dust-adhesive roller assembly, and the inlet of the suction channel faces the assembly. This electrode dust removal device utilizes the hot air channel to output hot air to the dust-adhesive roller assembly. The heat reduces the adhesion between particles and the adhesive layer on the dust-adhesive roller assembly. The suction channel then removes the detached particles from the assembly, achieving efficient particle removal and collection. This maintains the cleanliness and adhesion performance of the dust-adhesive roller assembly, effectively improving the situation where particle accumulation causes decreased adhesion efficiency or contamination of the electrode surface, thus enhancing the cleaning efficiency and effectiveness of the electrode dust removal device.

[0006] In some embodiments, the heating assembly includes a first heating element and a second heating element. The first heating element is disposed within the hot air channel, and the second heating element is disposed within the cleaning body and located outside the outlet of the hot air channel. Thus, through the synergistic heating of the first and second heating elements, the temperature stability of the hot air output from the hot air channel is effectively improved, heat loss during transmission is reduced, and the desorption capability of the cleaning mechanism on the surface of the sticky roller assembly is enhanced, thereby further improving the overall cleaning efficiency and operational reliability of the electrode dust removal device.

[0007] In some embodiments, there are multiple first heating elements, each spaced apart within the hot air channel. This arrangement of multiple first heating elements not only improves the temperature uniformity of the hot air within the hot air channel but also enhances the adaptability to differences in particle adhesion in different areas, facilitating the stable and efficient removal of particles from the surface of the sticky roller assembly.

[0008] In some embodiments, there are multiple second heating elements, which are spaced apart circumferentially along the adhesive roller assembly, and the preset heating temperature achievable by each second heating element gradually increases along the rotation direction of the adhesive roller assembly. Thus, by setting the temperature of each second heating element in a gradient manner, a staged and gradual thermal desorption process for particles can be achieved during the rotation of the adhesive roller assembly, reducing the risk of adhesive layer aging or deformation due to sudden local temperature rises, and effectively improving the removal efficiency for particles of different types and adhesion strengths.

[0009] In some embodiments, both the first heating element and the second heating element are infrared lamps; the wavelength of the infrared lamps is 2.5μm to 4.5μm, and / or the preset heating temperature of the infrared lamps is 600℃ to 1000℃. Thus, by limiting the wavelength range of the infrared lamps and the preset heating temperature range, heat energy can efficiently penetrate the particle surface and act on the particle-adhesive interface, significantly improving desorption efficiency and achieving a dual optimization of cleaning effect and equipment stability.

[0010] In some embodiments, the heating assembly further includes an induction coil disposed within the cleaning body and offset from the second heating element; the adhesive roller assembly has a conductive metal portion, which generates eddy currents with the induction coil through electromagnetic induction. Thus, the heat generated by electromagnetic induction directly acts on the adhesive roller assembly, forming a synergistic heating mechanism with external hot air heating. This not only accelerates the overall heating rate of the adhesive layer but also enhances the desorption capability for deeply embedded particles.

[0011] In some embodiments, the adhesive roller assembly includes a first adhesive roller and a second adhesive roller. The first adhesive roller contacts the electrode surface on the carrier roller and is used to adhere particles to the electrode surface. The second adhesive roller contacts the surface of the first adhesive roller and is used to transfer particles from the first adhesive roller. A conductive metal portion is configured as a rod-shaped structure disposed within the second adhesive roller. Thus, by disposing the conductive metal portion inside the second adhesive roller and combining it with electromagnetic heating via an induction coil, efficient thermal desorption of the transferred particles is achieved, reducing the probability of secondary contamination or decreased adhesion performance caused by particle accumulation on the surface of the second adhesive roller.

[0012] In some embodiments, the number of conductive metal portions is at least two, and each conductive metal portion is evenly distributed along the circumferential direction of the second adhesive roller at its inner circumferential edge. Thus, by evenly distributing multiple conductive metal portions along the inner circumferential direction of the second adhesive roller, the continuity and uniformity of induction heating can be achieved, reducing the risk of temperature fluctuations or localized overheating caused by single-point heating, and improving the consistency and reliability of particle desorption.

[0013] In some embodiments, the dynamic viscosity of the first sticking roller is lower than that of the second sticking roller. Thus, by making the dynamic viscosity of the first sticking roller lower than that of the second sticking roller, not only is the transfer efficiency of particles from the electrode surface to the second sticking roller improved, but fatigue wear of the adhesive layer under high-speed conditions is also reduced, thereby extending the overall service life of the sticking roller assembly.

[0014] In some embodiments, the cleaning mechanism surrounds the outer periphery of the second adhesive roller, and the central angle corresponding to the cleaning body covering the outer periphery of the second adhesive roller is 30°~50°. In this way, by limiting the covering angle of the cleaning body on the second adhesive roller, the hot air and suction can be effectively applied to the second adhesive roller, while reducing the probability of increased airflow resistance or poor heat dissipation of the roller due to excessive covering.

[0015] In some embodiments, the cleaning body is divided into adjacent first and second regions along the radial direction of the second adhesive roller; a hot air channel is located in the first region, and a suction channel is located in the second region. Thus, by dividing the cleaning body radially into independent first and second regions, effective spatial isolation and functional synergy between hot air supply and particle suction are achieved, improving the efficiency of thermal desorption and particle collection.

[0016] In some embodiments, at least two air supply ports are provided in the first region, one end of each air supply port being connected to an external air supply device, and the other end of each air supply port being connected to the inlet of the hot air channel. Thus, by providing multiple air supply ports, a uniform distribution of hot airflow at the inlet of the hot air channel can be achieved, thereby improving the uniformity of hot air coverage on the surface of the second adhesive roller.

[0017] In some embodiments, the second region is provided with at least two suction ports, one end of each suction port being connected to an external negative pressure device, and the other end of each suction port being connected to the outlet of the suction channel. Thus, by providing multiple suction ports, not only is the ability to capture desorbed particles enhanced, but the operational stability and cleaning continuity of the system under high dust load conditions are also improved.

[0018] In some embodiments, the electrode dust removal device further includes a base and a moving mechanism. The first sticking roller, the second sticking roller, and the cleaning mechanism are all disposed on the base, and the moving mechanism is connected to the base and used to drive the base to move. In this way, the position of the first sticking roller, the second sticking roller, and the cleaning mechanism on the base is adjusted relative to the electrode to facilitate cleaning of particles on the surface of the electrode and quick reset or avoidance operation after cleaning.

[0019] A battery production system includes the aforementioned electrode dust removal device. The system utilizes a hot air channel to output hot air to the dust-adhesive roller assembly. The heat reduces the adhesion between particles and the adhesive layer on the roller assembly. A suction channel then removes the detached particles from the roller assembly, achieving efficient particle removal and collection. This maintains the cleanliness and adhesion performance of the roller assembly, effectively improving the situation where particle accumulation leads to decreased adhesion efficiency or contamination of the electrode surface, thus enhancing the cleaning efficiency and effectiveness of the electrode dust removal device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an electrode dust removal device in some embodiments of this application.

[0021] Figure 2 for Figure 1 A cross-sectional view of the cleaning mechanism in the electrode dust removal device shown.

[0022] Figure 3 for Figure 1 A cross-sectional view of the second sticking roller in the electrode dust removal device shown.

[0023] Figure label:

[0024] 10. Electrode film;

[0025] 100. Carrying roller;

[0026] 200, Adhesive roller assembly; 201, Conductive metal part; 210, First adhesive roller; 220, Second adhesive roller;

[0027] 300. Cleaning mechanism; 310. Cleaning body; 310a. First zone; 310b. Second zone; 311. Hot air duct; 312. Suction duct; 320. Heating component; 321. First heating element; 322. Second heating element; 330. Air supply interface; 340. Suction interface;

[0028] 400. Base;

[0029] 500. Mobile mechanism. Detailed Implementation

[0030] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0032] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0035] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0036] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0037] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0038] With the popularization and promotion of new energy vehicles, their charging and discharging performance and range are increasingly attracting attention and importance. Power batteries, a type of rechargeable battery, are the power source for new energy vehicles and are widely used in the field.

[0039] In the processing of lithium battery electrodes, steps such as coating, baking, and cold pressing are typically required. Before cold pressing, the electrode surface is usually cleaned of dust to prevent particles from damaging the electrode during the pressing process. Existing electrode dust removal devices are prone to causing secondary pollution during the dust removal process and have low dust removal efficiency, failing to adequately meet production needs.

[0040] Based on the above considerations, and after in-depth research, an electrode dust removal device and battery production system were designed. Hot air is output to the dust-adhesive roller assembly through a hot air channel. The heat energy reduces the adhesion force between the particles and the adhesive layer of the dust-adhesive roller assembly. Then, the suction channel is used to suck up the desorbed particles from the dust-adhesive roller assembly, achieving efficient removal and collection of particles. This maintains the cleanliness and adhesion performance of the dust-adhesive roller assembly, effectively improving the situation where the adhesion efficiency of the dust-adhesive roller assembly decreases or the electrode surface is contaminated due to particle accumulation. This is beneficial to improving the cleaning efficiency and effect of the electrode dust removal device.

[0041] Please refer to Figures 1 to 3In one embodiment, the electrode dust removal device includes a support roller 100, a dust-adhesive roller group 200, and a cleaning mechanism 300. The support roller 100 is used to tension and transport the electrode 10. The dust-adhesive roller group 200 is disposed above the support roller 100 and is used to adhere particles on the surface of the electrode 10. The cleaning mechanism 300 is disposed around the outer periphery of the dust-adhesive roller group 200 and is used to remove particles from the dust-adhesive roller group 200. The cleaning mechanism 300 includes a cleaning body 310 and a heating component 320. The cleaning body 310 is provided with a mutually isolated hot air channel 311 and a suction channel 312. The heating component 320 is at least partially disposed in the hot air channel 311. The outlet of the hot air channel 311 faces the dust-adhesive roller group 200, and the inlet of the suction channel 312 faces the dust-adhesive roller group 200.

[0042] It should be noted that the electrode 10 is tensioned and conveyed on the support roller 100, and the dust-adhesive roller assembly 200 is able to press on the support roller 100 and adhere the particles on the surface of the electrode 10. After a period of use, when the dust-adhesive roller assembly 200 needs to be cleaned, hot air is output to the dust-adhesive roller assembly 200 through the hot air channel 311. The heat energy reduces the adhesion between the particles and the adhesive layer of the dust-adhesive roller assembly 200, and then the suction channel 312 is used to suck up the desorbed particles on the dust-adhesive roller assembly 200, thereby achieving efficient removal and collection of particles.

[0043] In the embodiments of this application, the support roller 100 is a component used to tension and transport the electrode sheet 10. The support roller 100 is driven by a drive motor to rotate, so as to realize the continuous transport of the electrode sheet 10. The number of support rollers 100 is not limited to one. The number of support rollers 100 can be set according to the actual process requirements. Each support roller 100 can cooperate with each other to achieve precise control of the tension of the electrode sheet 10 and reasonable layout of the transport path.

[0044] In the embodiments of this application, the dust-adhesive roller assembly 200 is a component disposed above the carrier roller 100 and used to adhere particles to the surface of the electrode sheet 10. A contact pressure is formed between the dust-adhesive roller assembly 200 and the carrier roller 100 to effectively adhere the particles to the surface of the electrode sheet 10. The dust-adhesive roller assembly 200 is typically made of an elastic material with high adhesion properties, and its surface adhesive layer has sufficient viscosity at room temperature to capture dust, metal shavings, or other particulate impurities on the surface of the electrode sheet 10. The dust-adhesive roller assembly 200 can adopt a single-roller or multi-roller structure. When the dust-adhesive roller assembly 200 is a multi-roller structure, the rollers can achieve step-by-step transfer and centralized processing of particles through pressing or gap fitting.

[0045] In the embodiments of this application, the cleaning mechanism 300 is a component surrounding the adhesive roller assembly 200 and used to remove particles from the adhesive roller assembly 200. During the cleaning process, the cleaning mechanism 300 effectively removes particles adhering to the surface of the adhesive roller assembly 200 through the combined action of hot air and suction. The cleaning body 310 is provided with a mutually isolated hot air channel 311 and a suction channel 312. The high-temperature airflow output from the hot air channel 311 can soften or weaken the bonding force between the particles and the adhesive layer, making the particles easier to detach. At the same time, the suction channel 312 quickly sucks away the detached particles under negative pressure, preventing them from re-attaching or scattering onto the surface of the electrode sheet 10. The cross-sectional shape and size of the hot air channel 311 and the suction channel 312 can be optimized according to the actual airflow requirements to ensure uniform airflow distribution, minimal pressure loss, and effective coverage of the cleaning area of ​​the adhesive roller assembly 200.

[0046] The aforementioned electrode dust removal device utilizes the hot air channel 311 to output hot air to the dust-adhesive roller group 200. The heat energy reduces the adhesion force between the particles and the adhesive layer of the dust-adhesive roller group 200. Then, the suction channel 312 is used to suck up the desorbed particles on the dust-adhesive roller group 200, thereby achieving efficient removal and collection of particles. This maintains the cleanliness and adhesion performance of the dust-adhesive roller group 200, effectively improving the situation where the adhesion efficiency of the dust-adhesive roller group 200 decreases or the surface of the electrode 10 is contaminated due to particle accumulation. This is beneficial to improving the cleaning efficiency and effect of the electrode dust removal device.

[0047] Please refer to some embodiments in this application. Figure 1 and Figure 2 The heating component 320 includes a first heating element 321 and a second heating element 322. The first heating element 321 is disposed in the hot air channel 311, and the second heating element 322 is disposed in the cleaning body 310 and located outside the outlet of the hot air channel 311.

[0048] Understandably, the first heating element 321 is used to initially heat the airflow entering the hot air channel 311, and the second heating element 322 is used to perform secondary heating or local supplementary heating on the airflow flowing through the hot air channel 311, so that the hot air maintains sufficient heat energy when it comes into contact with the surface of the sticky roller assembly 200, so as to weaken the bonding force between the particles and the adhesive layer of the sticky roller assembly 200.

[0049] In the embodiments of this application, the first heating element 321 is a component disposed in the hot air channel 311. The first heating element 321 can be in the form of an electric heating wire, a ceramic heater or an infrared heating element, etc., and its arrangement is adapted to the airflow direction of the hot air channel 311, as long as the airflow in the hot air channel 311 can be heated evenly.

[0050] In the embodiments of this application, the second heating element 322 is a component disposed within the cleaning body 310 and located outside the outlet of the hot air channel 311, that is, the second heating element 322 is positioned adjacent to the outlet of the hot air channel 311. The second heating element 322 is used to compensate for the temperature of the hot air about to contact the dust roller assembly 200. The second heating element 322 can be a heating element such as a ring-shaped electric heating element or an embedded heating film, and its arrangement should be such that the hot air can still maintain an effective working temperature after leaving the hot air channel 311. In addition, the power of the second heating element 322 and the first heating element 321 can be independently adjusted to adapt to the cleaning needs of different material electrode sheets 10 and different particle types, thereby improving the adaptability and cleaning stability of the device.

[0051] Through the above settings, the temperature stability of the hot air output from the hot air channel 311 is effectively improved by the coordinated heating of the first heating element 321 and the second heating element 322, the heat loss of the hot air during the transmission process is reduced, and the desorption capability of the cleaning mechanism 300 on the surface particles of the dust-adhesive roller group 200 is enhanced, thereby further improving the overall cleaning efficiency and operational reliability of the electrode dust removal device.

[0052] Please refer to some embodiments in this application. Figure 1 and Figure 2 There are multiple first heating elements 321, and each first heating element 321 is spaced apart in the hot air channel 311.

[0053] In the embodiments of this application, each first heating element 321 is spaced apart within the hot air channel 311; that is, each first heating element 321 can be evenly spaced or non-evenly spaced. Each first heating element 321 extends axially along the adhesive roller assembly 200, and the length and spacing of each first heating element 321 can be rationally arranged according to the length and cross-sectional shape of the hot air channel 311 to match the airflow path and optimize heat transfer efficiency. Furthermore, the power of each first heating element 321 can be independently controlled to dynamically adjust the hot air temperature distribution according to actual working conditions, further improving adaptability to particles with different adhesion strengths.

[0054] In the embodiments of this application, the types of each first heating element 321 can be exactly the same or different. For example, each first heating element 321 can be in the form of a heating wire, a PTC ceramic heater or an infrared radiation element, etc., to achieve multi-stage precise temperature control of the airflow in the hot air channel 311.

[0055] By setting up multiple first heating elements 321 as described above, not only is the temperature uniformity of hot air within the hot air channel 311 improved, but the adaptability to differences in particle adhesion in different areas is also enhanced, which is conducive to the stable and efficient removal of particles from the surface of the dust-adhesive roller group 200.

[0056] Please refer to some embodiments in this application. Figure 1 and Figure 2 There are multiple second heating elements 322, and each second heating element 322 is arranged at intervals along the circumference of the dust-sticking roller group 200. The preset heating temperature that each second heating element 322 can achieve gradually increases along the rotation direction of the dust-sticking roller group 200.

[0057] It is understandable that each of the second heating elements 322 is arranged sequentially along the rotation direction of the second sticking roller 220, and its preset heating temperature increases in a gradient. This allows the hot air to gradually increase its operating temperature as it contacts the surface of the sticking roller group 200, which helps to gently soften the bond between the particles and the adhesive layer in the initial contact area, while providing higher heat energy in the subsequent contact area to completely remove stubborn particles.

[0058] In the embodiments of this application, each of the second heating elements 322 is arranged circumferentially around the adhesive roller assembly 200, so that hot air can act on its surface in stages and gradually during the rotation of the adhesive roller assembly 200. The heating temperature of each of the second heating elements 322 can be dynamically adjusted according to the material characteristics, particle type and production speed of the electrode sheet 10, so as to achieve the best balance between efficient desorption and protective adhesive layer.

[0059] In the embodiments of this application, the preset heating temperature of each second heating element 322 gradually increases along the rotation direction of the dust-adhesive roller assembly 200. The increasing trend can be linear or non-linear; for example, when the dust-adhesive roller assembly 200 rotates counterclockwise, the preset heating temperature of each second heating element 322 gradually increases from right to left. The preset heating temperature of each second heating element 322 can be dynamically adjusted according to parameters such as the electrode material 10, operating speed, and ambient humidity, further enhancing the device's adaptability to complex working conditions.

[0060] By setting the above parameters and gradually increasing the temperature of each second heating element 322, the particles can be thermally desorbed in stages during the rotation of the adhesive roller group 200. This reduces the risk of adhesive layer aging or deformation caused by sudden local temperature rise and effectively improves the removal efficiency of particles of different types and adhesion strengths.

[0061] Please refer to some embodiments in this application. Figure 1 and Figure 2 Both the first heating element 321 and the second heating element 322 are infrared lamps; the wavelength of the infrared lamps is 2.5μm~4.5μm, and / or the preset heating temperature of the infrared lamps is 600℃~1000℃.

[0062] In the embodiments of this application, both the first heating element 321 and the second heating element 322 are infrared lamps. The wavelength range and preset heating temperature of the infrared lamps are optimized to effectively desorb various particulate impurities without damaging the adhesive layer of the adhesive roller assembly 200. The installation angle and irradiation distance of the infrared lamps can be adjusted according to the curvature and rotation speed of the adhesive roller assembly 200 to improve the uniformity of hot air output and the sufficiency of the action time.

[0063] By setting the infrared lamps to a specific wavelength range and a preset heating temperature range, heat energy can be efficiently penetrated to the particle surface and act on the particle-adhesive interface, significantly improving desorption efficiency and achieving a dual optimization of cleaning effect and equipment stability.

[0064] Based on some embodiments in this application, please refer to Figures 1 to 3 The heating assembly 320 also includes an induction coil, which is located inside the cleaning body 310 and is offset from the second heating element 322; the dust roller assembly 200 is provided with a conductive metal part 201, which generates induced eddy currents with the induction coil through electromagnetic induction.

[0065] It should be noted that when the induction coil is energized, it generates an alternating magnetic field. The alternating magnetic field interacts with the conductive metal part 201 in the dust-adhesive roller assembly 200, which induces eddy currents in the conductive metal part 201 and generates heat. This heat can be directly transferred to the adhesive layer of the dust-adhesive roller assembly 200, which helps to reduce the adhesion between the particles and the adhesive layer.

[0066] In the embodiments of this application, the induction coil is a component disposed within the cleaning body 310 and offset from the second heating element 322. The induction coil and the second heating element 322 are spatially independent, allowing the electromagnetic induction area and the hot air action area to be independent yet synergistically effective. The number of turns, energizing frequency, and current intensity of the induction coil can be designed to match the material and size of the conductive metal part 201 to regulate the intensity and distribution of the induced eddy currents, thereby achieving precise replenishment of the local temperature of the sticky roller assembly 200. Optionally, the energizing frequency of the induction coil is 35kHz, the power density is 5kW / m²~15kW / m², and the distance between the induction coil and the second sticky roller 220 of the sticky roller assembly 200 is 1mm~3mm.

[0067] In the embodiments of this application, the conductive metal part 201 is a component that generates induced eddy currents with the induction coil through electromagnetic induction. The conductive metal part 201 is typically made of copper, aluminum, or other highly conductive metal materials, and its shape is adapted to the structure of the adhesive roller assembly 200 so that it can be continuously and effectively coupled with the induction coil during rotation. The arrangement position and area of ​​the conductive metal part 201 can be adjusted according to actual heating requirements to achieve selective heating of specific areas of the adhesive layer, further improving the particle desorption efficiency.

[0068] With the above settings, the heat generated by electromagnetic induction directly acts on the adhesive roller assembly 200, forming a composite heating mechanism that works synergistically with external hot air heating. This not only accelerates the overall heating rate of the adhesive layer but also enhances the desorption capability for deeply embedded particles.

[0069] Please refer to some embodiments in this application. Figure 1 The dust-adhesive roller assembly 200 includes a first dust-adhesive roller 210 and a second dust-adhesive roller 220. The first dust-adhesive roller 210 contacts the surface of the electrode 10 on the carrier roller 100 and is used to adhere particles on the surface of the electrode 10. The second dust-adhesive roller 220 contacts the surface of the first dust-adhesive roller 210 and is used to transfer particles on the first dust-adhesive roller 210. The conductive metal part 201 is configured as a rod-shaped structure disposed in the second dust-adhesive roller 220.

[0070] Understandably, the first sticking roller 210 directly contacts the surface of the electrode 10. After the first sticking roller 210 captures the particles on the surface of the electrode 10, the particles on the first sticking roller 210 are transferred to the surface of the second sticking roller 220 through the pressing contact between the first sticking roller 210 and the second sticking roller 220. At this time, the conductive metal part 201 of the second sticking roller 220 generates eddy current heating under the action of the induction coil, which raises the temperature of the adhesive layer, thereby reducing the adhesion of the particles and making it easier to remove the particles on the second sticking roller 220 in the future.

[0071] In the embodiments of this application, the first adhesive roller 210 is a component that contacts the surface of the electrode 10 on the carrier roller 100. The first adhesive roller 210 directly undertakes the initial task of capturing particles on the surface of the electrode 10. The hardness, elastic modulus, and surface roughness of the first adhesive roller 210 can be optimized according to the material of the electrode 10 and the process speed. For example, the adhesive layer on the surface of the first adhesive roller 210 is an organosilicon gel with a thickness of 2.5 mm ± 0.1 mm, a Shore A hardness of 25 ± 3, and a dynamic viscosity of 4000 cps.

[0072] In the embodiments of this application, the second adhesive roller 220 is a component used to transfer particles from the first adhesive roller 210. The second adhesive roller 220 and the first adhesive roller 210 are pressed together, and the transfer of particles from the first adhesive roller 210 to the second adhesive roller 220 is achieved through the relative movement between the two. The surface of the second adhesive roller 220 is also covered with a highly adhesive layer, but its material or hardness may differ from that of the first adhesive roller 210 to optimize particle transfer efficiency and reduce adhesive layer wear. For example, the adhesive layer on the surface of the second adhesive roller 220 is a high-viscosity silicone resin with a thickness of 5 mm, a Shore A hardness of 15±2, and a dynamic viscosity of 8000 cps.

[0073] In the embodiments of this application, the conductive metal portion 201 is configured as a rod-shaped structure disposed within the second adhesive roller 220. During the rotation of the second adhesive roller 220, the conductive metal portion 201 is continuously subjected to the alternating magnetic field generated by the induction coil, thereby stably generating eddy currents and maintaining the temperature of the adhesive layer, causing the particles transferred to the second adhesive roller 220 to rapidly desorb under thermal action. The conductive metal portion 201 is disposed through the second adhesive roller 220 along its axial direction. The rod-shaped structure can be solid or hollow, and the material is preferably oxygen-free copper or aluminum alloy with high conductivity.

[0074] By setting the conductive metal part 201 inside the second adhesive roller 220 and combining it with the electromagnetic heating method of the induction coil, efficient thermal desorption of the transferred particles is achieved, reducing the probability of secondary pollution or decreased adhesion performance caused by the accumulation of particles on the surface of the second adhesive roller 220.

[0075] Based on some embodiments in this application, please refer to Figure 1 The number of conductive metal parts 201 is at least two, and each conductive metal part 201 is evenly distributed at intervals along the circumferential direction of the second adhesive roller 220 at the inner peripheral edge of the second adhesive roller 220.

[0076] In the embodiments of this application, each conductive metal part 201 is evenly distributed along the circumferential spacing of the second adhesive roller 220, and the circumferential spacing of each conductive metal part 201 is optimized according to the magnetic field coverage of the induction coil and the rotational speed of the second adhesive roller 220. The size and shape of each conductive metal part 201 can be exactly the same or different. For example, each conductive metal part 201 can be a rod-shaped structure with a rectangular cross-section, a circular cross-section, or an irregular cross-section.

[0077] With the above configuration, by evenly distributing multiple conductive metal parts 201 in the circumferential direction within the second adhesive roller 220, the continuity and uniformity of induction heating can be achieved, reducing the risk of temperature fluctuations or local overheating caused by single-point heating, and improving the consistency and reliability of particle desorption.

[0078] Based on some embodiments in this application, please refer to Figure 1 The dynamic viscosity of the first sticking roller 210 is less than that of the second sticking roller 220.

[0079] Understandably, the lower dynamic viscosity of the first sticking roller 210 allows it to quickly capture particles on the surface of the electrode 10 when it comes into contact with the electrode 10, while reducing damage to the coating of the electrode 10; while the higher dynamic viscosity of the second sticking roller 220 is beneficial for firmly receiving and locking the particles transferred from the first sticking roller 210 during the pressing process.

[0080] By setting the above parameters so that the dynamic viscosity of the first sticking roller 210 is less than that of the second sticking roller 220, the transfer efficiency of particles from the surface of the electrode 10 to the second sticking roller 220 is improved, and the fatigue wear of the adhesive layer under high-speed conditions is reduced, thereby extending the overall service life of the sticking roller group 200.

[0081] Please refer to some embodiments in this application. Figure 1 and Figure 2 The cleaning mechanism 300 is arranged around the outer periphery of the second adhesive roller 220, and the central angle corresponding to the outer periphery of the cleaning body 310 covering the second adhesive roller 220 is 30°~50°.

[0082] In the embodiments of this application, the cleaning mechanism 300 surrounds the outer periphery of the second adhesive roller 220, that is, the cleaning mechanism 300 covers part of the outer periphery of the second adhesive roller 220 in an arc-shaped structure, and the coverage area corresponds to a central angle of 30°~50°. A constant gap is maintained between the inner wall of the cleaning body 310 and the surface of the second adhesive roller 220 to maintain the stability of the airflow channel and ensure that the hot air is blown evenly and the particles are efficiently removed. Preferably, the central angle corresponding to the outer periphery of the second adhesive roller 220 covered by the cleaning body 310 is 60°, and the distance between the inner wall of the cleaning body 310 and the surface of the second adhesive roller 220 is 3mm~5mm.

[0083] By limiting the covering angle of the cleaning body 310 on the second sticky roller 220, the hot air and suction can be effectively applied to the second sticky roller 220, while reducing the probability of increased airflow resistance or poor heat dissipation of the roller due to excessive covering.

[0084] Please refer to some embodiments in this application. Figure 1 and Figure 2 The cleaning body 310 is divided into an adjacent first region 310a and a second region 310b along the radial direction of the second adhesive roller 220; the hot air channel 311 is located in the first region 310a and the suction channel 312 is located in the second region 310b.

[0085] It should be noted that during cleaning, the second sticky roller 220 rotates around its own axis, and the hot air channel 311 in the first region 310a delivers hot air to the surface of the second sticky roller 220. The heat reduces the adhesion between the particles and the adhesive layer of the sticky roller assembly 200. Then, the suction channel 312 in the second region 310b is used to suck up the particles that have been desorbed from the second sticky roller 220.

[0086] In the embodiments of this application, the first region 310a and the second region 310b are arranged adjacent to each other radially along the second adhesive roller 220, and the first region 310a and the second region 310b can be symmetrically distributed from left to right. In addition, the volume ratio of the first region 310a and the second region 310b can be adjusted according to process requirements to balance heating intensity and suction capacity, thereby maintaining stable cleaning performance at different operating speeds.

[0087] In the embodiments of this application, the hot air channel 311 is located in the first region 310a, and the suction channel 312 is located in the second region 310b. The hot air channel 311 and the suction channel 312 are structurally isolated from each other. The cross-sectional shapes of the hot air channel 311 and the suction channel 312 can be designed to conform to the curvature of the second adhesive roller 220, so that the airflow flows in close contact with the roller surface, further enhancing the heat exchange effect and particle capture capability. Optionally, the air source input into the hot air channel 311 is clean compressed air, the pressure in the hot air channel 311 is 50Pa~200Pa, the gas temperature is 80℃~120℃, and the gas flow rate is 0.5m³ / min~2m³ / min; the suction negative pressure in the suction channel 312 is -2.5kPa~-4.0kPa, and the suction air volume is 15m³ / min.

[0088] By dividing the cleaning body 310 radially into an independent first region 310a and a second region 310b, the hot air supply and particle suction are effectively isolated in space and functionally coordinated, thereby improving the efficiency of thermal desorption and particle collection.

[0089] Based on some embodiments in this application, please refer to Figure 1 and Figure 2 The first area 310a is provided with at least two air supply interfaces 330. One end of each air supply interface 330 is connected to an external air supply device, and the other end of each air supply interface 330 is connected to the inlet of the hot air channel 311.

[0090] Understandably, the external air supply device inputs external air into each air supply interface 330, and the air is then delivered by each air supply interface 330 to the inlet of the hot air channel 311. After being heated by the heating component 320, the air is finally blown out from the outlet of the hot air channel 311 onto the surface of the second sticky roller 220.

[0091] In the embodiments of this application, at least two air supply interfaces 330 are provided in the first region 310a. The air supply interface 330 is a component used to connect an external air supply device and the inlet of the hot air channel 311. The number and distribution of the air supply interfaces 330 can be optimized according to the structural length of the hot air channel 311 and the requirements for airflow uniformity. Each air supply interface 330 can be equipped with an independent flow regulating valve, which facilitates dynamic adjustment of the air intake in different sections during operation, thereby adapting to changes in roller surface temperature distribution or particle load.

[0092] With the above settings, by setting multiple air supply ports 330, the hot air flow can be evenly distributed at the inlet of the hot air channel 311, thereby improving the uniformity of hot air coverage on the surface of the second sticky roller 220.

[0093] Please refer to some embodiments in this application. Figure 1 and Figure 2 The second region 310b is provided with at least two suction ports 340. One end of each suction port 340 is connected to an external negative pressure device, and the other end of each suction port 340 is connected to the outlet of the suction channel 312.

[0094] Understandably, when the external negative pressure device is running, the particles desorbed on the second sticky roller 220 enter the suction channel 312 through the inlet and exit the external negative pressure device through the outlet of the suction channel 312, thereby achieving efficient collection and discharge of the desorbed particles.

[0095] In the embodiments of this application, at least two suction ports 340 are provided in the second region 310b. The suction ports 340 are components used to connect the external negative pressure device to the outlet of the suction channel 312. The number and layout of the suction ports 340 are optimized according to the length of the suction channel 312 and the required uniformity of negative pressure. Each suction port 340 can be configured with an independent regulating valve or throttling device to dynamically balance the suction intensity of different sections.

[0096] By setting up multiple suction ports 340 as described above, the ability to capture desorbed particles is enhanced, and the operational stability and cleaning continuity of the system under high dust load conditions are improved.

[0097] Please refer to some embodiments in this application. Figure 1 and Figure 2 The electrode dust removal device also includes a base 400 and a moving mechanism 500. The first sticking roller 210, the second sticking roller 220 and the cleaning mechanism 300 are all located on the base 400. The moving mechanism 500 is connected to the base 400 and is used to drive the base 400 to move.

[0098] It should be noted that the moving mechanism 500 can drive the base 400 to move laterally or longitudinally, so that the first sticking roller 210, the second sticking roller 220 and the cleaning mechanism 300 on the base 400 can be adjusted in position relative to the electrode 10, so as to clean the particles on the surface of the electrode 10 and to quickly reset or avoid the operation after cleaning.

[0099] In the embodiments of this application, the base 400 is a component that provides installation space for the first adhesive roller 210, the second adhesive roller 220, and the cleaning mechanism 300. The base 400 can be made of high-strength aluminum alloy or stainless steel, possessing good rigidity and thermal stability, and can effectively support each functional component and maintain their relative positional accuracy. The base 400 can integrate cable channels and air circuit interfaces, realizing a compact layout of the heating, sensing, and suction systems, improving the overall integration and maintenance convenience.

[0100] In the embodiments of this application, the moving mechanism 500 is a component connected to the base 400 and used to drive the base 400 to move. The moving mechanism 500 can adopt a servo motor driven linear module, pneumatic slide table, or ball screw structure, and its stroke range and positioning accuracy are adapted according to the production line layout and the width of the electrode 10. The motion trajectory and speed of the moving mechanism 500 can be programmed by the control system to adapt to the cleaning needs of electrode 10 of different specifications, and support functions such as automatic avoidance and emergency retraction.

[0101] With the above settings, the first sticking roller 210, the second sticking roller 220 and the cleaning mechanism 300 on the base 400 are adjusted in position relative to the electrode 10, so as to facilitate cleaning of particles on the surface of the electrode 10 and quick reset or avoidance operation after cleaning.

[0102] Please refer to Figures 1 to 3 One embodiment of the battery production system includes the aforementioned electrode dust removal device.

[0103] It should be noted that the battery production system also includes components such as coating device, rolling device, and slitting device. Each device is arranged sequentially along the conveying path of electrode 10 to form a continuous production process.

[0104] The aforementioned battery production system utilizes hot air channel 311 to output hot air to the dust-adhesive roller assembly 200. The heat energy reduces the adhesion force between the particles and the adhesive layer of the dust-adhesive roller assembly 200. Then, the suction channel 312 is used to suck up the detached particles from the dust-adhesive roller assembly 200, achieving efficient removal and collection of particles. This maintains the cleanliness and adhesion performance of the dust-adhesive roller assembly 200, effectively improving the situation where the adhesion efficiency of the dust-adhesive roller assembly 200 decreases or the surface of the electrode sheet 10 is contaminated due to particle accumulation. This is beneficial to improving the cleaning efficiency and effect of the electrode sheet dust removal device.

[0105] According to some embodiments in this application, see Figures 1 to 3In one embodiment, the electrode dust removal device includes a support roller 100, a dust-adhesive roller group 200, a cleaning mechanism 300, a base 400, and a moving mechanism 500. The support roller 100 is used to tension and transport the electrode 10. The dust-adhesive roller group 200 is disposed above the support roller 100 and is used to adhere particles on the surface of the electrode 10. The cleaning mechanism 300 is disposed around the outer periphery of the dust-adhesive roller group 200 and is used to remove particles on the dust-adhesive roller group 200. The cleaning mechanism 300 includes a cleaning body 310 and a heating component 320. The cleaning body 310 is provided with a hot air channel 311 and a suction channel 312 that are isolated from each other. The heating component 320 is at least partially disposed in the hot air channel 311. The outlet of the hot air channel 311 faces the dust-adhesive roller group 200, and the inlet of the suction channel 312 faces the dust-adhesive roller group 200. The dust-adhesive roller assembly 200 and the cleaning mechanism 300 are both located on the base 400. The moving mechanism 500 is connected to the base 400 and is used to drive the base 400 to move. The dust-adhesive roller assembly 200 includes a first adhesive roller 210 and a second adhesive roller 220. The first adhesive roller 210 contacts the surface of the electrode 10 on the carrier roller 100 and is used to adhere particles on the surface of the electrode 10. The second adhesive roller 220 contacts the surface of the first adhesive roller 210 and is used to transfer particles on the first adhesive roller 210. The dynamic viscosity of the first adhesive roller 210 is less than that of the second adhesive roller 220. The cleaning mechanism 300 is arranged around the outer periphery of the second adhesive roller 220, and the cleaning body 310 covers the outer periphery of the second adhesive roller 220 at a central angle of 30°~50°. The cleaning body 310 is divided into an adjacent first region 310a and a second region 310b along the radial direction of the second adhesive roller 220. The hot air channel 311 is located in the first region 310a, and the suction channel 312 is located in the second region 310b.

[0106] The heating assembly 320 includes multiple first heating elements 321, multiple second heating elements 322, and an induction coil. Each first heating element 321 is spaced apart within the hot air channel 311. Each second heating element 322 is located within the cleaning body 310 and outside the outlet of the hot air channel 311. The second heating elements 322 are spaced apart circumferentially along the adhesive roller assembly 200, and the preset heating temperature achievable by each second heating element 322 gradually increases along the rotation direction of the second adhesive roller 220. The induction coil is located within the cleaning body 310 and is offset from the second heating elements 322. The second adhesive roller 220 has at least two conductive metal portions 201. The conductive metal portions 201 and the induction coil generate eddy currents through electromagnetic induction. Each conductive metal portion 201 is evenly distributed circumferentially along the inner periphery of the second adhesive roller 220.

[0107] According to some embodiments in this application, see Figures 1 to 3 One embodiment of the battery production system includes the aforementioned electrode dust removal device.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electrode dust removal device, characterized in that, include: A carrier roller (100) is used to tension and convey the electrode sheet (10). A dust-adhesive roller assembly (200) is disposed above the carrier roller (100) and is used to adhere particles to the surface of the electrode sheet (10); A cleaning mechanism (300) is disposed around the outer periphery of the sticky roller assembly (200) and is used to remove particles from the sticky roller assembly (200); The cleaning mechanism (300) includes a cleaning body (310) and a heating component (320). The cleaning body (310) is provided with a hot air channel (311) and a suction channel (312) that are isolated from each other. The heating component (320) is at least partially located in the hot air channel (311). The outlet of the hot air channel (311) faces the dust-sticking roller group (200), and the inlet of the suction channel (312) faces the dust-sticking roller group (200).

2. The electrode dust removal device according to claim 1, characterized in that, The heating assembly (320) includes a first heating element (321) and a second heating element (322). The first heating element (321) is disposed in the hot air channel (311), and the second heating element (322) is disposed in the cleaning body (310) and located outside the outlet of the hot air channel (311).

3. The electrode dust removal device according to claim 2, characterized in that, There are multiple first heating elements (321), and each first heating element (321) is spaced apart in the hot air channel (311).

4. The electrode dust removal device according to claim 2, characterized in that, There are multiple second heating elements (322), each second heating element (322) is arranged circumferentially along the dust-sticking roller group (200), and the preset heating temperature that each second heating element (322) can achieve gradually increases along the rotation direction of the dust-sticking roller group (200).

5. The electrode dust removal device according to claim 2, characterized in that, Both the first heating element (321) and the second heating element (322) are infrared lamps; The wavelength of the infrared lamp is 2.5μm to 4.5μm, and / or the preset heating temperature of the infrared lamp is 600℃ to 1000℃.

6. The electrode dust removal device according to claim 2, characterized in that, The heating assembly (320) also includes an induction coil, which is disposed within the cleaning body (310) and offset from the second heating element (322); The dust-adhesive roller assembly (200) is provided with a conductive metal part (201), and the conductive metal part (201) and the induction coil generate induced eddy currents through electromagnetic induction.

7. The electrode dust removal device according to claim 6, characterized in that, The dust-adhesive roller assembly (200) includes a first adhesive roller (210) and a second adhesive roller (220). The first adhesive roller (210) contacts the surface of the electrode (10) on the carrier roller (100) and is used to adhere particles on the surface of the electrode (10). The second adhesive roller (220) contacts the surface of the first adhesive roller (210) and is used to transfer particles on the first adhesive roller (210). The conductive metal part (201) is configured as a rod-shaped structure disposed within the second adhesive roller (220).

8. The electrode dust removal device according to claim 7, characterized in that, The number of the conductive metal parts (201) is at least two, and each of the conductive metal parts (201) is evenly distributed at a circumferential interval on the inner peripheral edge of the second adhesive roller (220).

9. The electrode dust removal device according to claim 7, characterized in that, The dynamic viscosity of the first sticking roller (210) is less than that of the second sticking roller (220).

10. The electrode dust removal device according to claim 7, characterized in that, The cleaning mechanism (300) is arranged around the outer periphery of the second adhesive roller (220), and the central angle corresponding to the outer periphery of the second adhesive roller (220) covered by the cleaning body (310) is 30°~50°.

11. The electrode dust removal device according to claim 7, characterized in that, The cleaning body (310) is divided into an adjacent first region (310a) and a second region (310b) along the radial direction of the second adhesive roller (220). The hot air channel (311) is located in the first region (310a), and the suction channel (312) is located in the second region (310b).

12. The electrode dust removal device according to claim 11, characterized in that, The first area (310a) is provided with at least two air supply ports (330), one end of each air supply port (330) is connected to an external air supply device, and the other end of each air supply port (330) is connected to the inlet of the hot air channel (311).

13. The electrode dust removal device according to claim 11, characterized in that, The second region (310b) is provided with at least two suction ports (340), one end of each suction port (340) is connected to an external negative pressure device, and the other end of each suction port (340) is connected to the outlet of the suction channel (312).

14. The electrode dust removal device according to claim 7, characterized in that, The electrode dust removal device also includes a base (400) and a moving mechanism (500). The first sticking roller (210), the second sticking roller (220) and the cleaning mechanism (300) are all located on the base (400). The moving mechanism (500) is connected to the base (400) and is used to drive the base (400) to move.

15. A battery production system, characterized in that, Includes the electrode dust removal device as described in any one of claims 1-14.

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