Cleaning device and vacuum coating post-processing system
Through the dust blowing, sticking and rolling treatment of the cleaning device, the defects of the composite fluid collecting surface during the vacuum coating process are solved, reducing the risk of battery short circuit and improving battery performance.
Patent Information
- Application Number
- CN202422363485.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-26
AI Technical Summary
In the existing vacuum coating technology, the surface of the composite fluid collector is prone to defects such as concave and bumps, splashes, dense pits, scalds, dead folds, pinholes, and no coating points, resulting in an increase in the probability of battery short-circuiting, and the existing methods cannot effectively avoid the safety risks of highly abnormal splashing on the battery.
The vacuum coating post-treatment is carried out using cleaning devices, including dust blowing equipment, dust sticking rollers and roller pressing equipment. Through purge, adhesive removal and roller pressing treatment, the height of the splashing aluminum dots is controlled to avoid perforations and other defects during the roller pressing process.
It effectively reduces the probability of battery short circuit, improves the cycle and rate performance of the battery, and ensures the quality and safety of the current collector film.
Smart Images
Figure CN223276850U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of vacuum coating technology, and in particular to a cleaning device and a vacuum coating post-processing system. Background Art
[0002] The composite current collector is a "sandwich" structure with an inner layer of a polymer high molecular layer (such as PET, PP or PI) and metal conductive layers (Al or Cu) on both sides. The main method currently used to prepare the composite current collector is wire feeding evaporation coating.
[0003] Currently, vacuum roll-to-roll evaporation is the most common method for fabrication. The detailed process flow is as follows: An evaporation boat melts the metal wire fed into it through resistance heating, forming a molten pool on the boat's surface. The liquid in the pool evaporates and then deposits onto the film surface. Due to the inherent fluctuations in the molten pool caused by dripping from the wire, new defects such as bumps, spatter, dense pitting, burns, dead folds, pinholes, and uncoated areas are prone to appearing during production. Highly abnormal aluminum chips deposited on the current collector surface can pose a significant safety risk to the finished battery, increasing the probability of short circuits. Summary of the Invention
[0004] The purpose of this disclosure is to provide a cleaning device and a vacuum coating post-processing system that can solve at least one of the above-mentioned technical problems. The specific solution is as follows:
[0005] According to the specific embodiments of the present disclosure, on the one hand, the present disclosure provides a cleaning device, which is used for post-processing of vacuum coating, and the cleaning device includes: a dust blowing device, which is configured to blow dust on the surface of the current collector film; a sticky roller, which is arranged downstream of the transmission path of the dust blowing device, and the sticky roller is configured to stick to impurities on the surface of the current collector film; and a rolling device, which is arranged downstream of the transmission path of the sticky roller.
[0006] In an optional embodiment, the dust blowing equipment includes: a first dust blowing part, the first dust blowing part is a strip-shaped structure, the first dust blowing part includes: a first air cavity, a first air inlet is provided at one end of the first air cavity, and the first air inlet is configured to be connected to a blowing device; a first air outlet is provided at the other end of the first air cavity, and the first air outlet is configured to blow dust to the first surface of the current collector film; a second dust blowing part, the second dust blowing part is a strip-shaped structure, the second dust blowing part includes: a second air cavity, a second air inlet is provided at one end of the second air cavity, and the second air inlet is configured to be connected to a blowing device; a second air outlet is provided at the other end of the second air cavity, and the second air outlet is configured to blow dust to the second surface of the current collector film.
[0007] In an optional embodiment, the angle between the air outlet direction of the first air outlet nozzle and the first surface is a first preset angle.
[0008] In an optional embodiment, the angle between the air outlet direction of the second air outlet nozzle and the second surface is a second preset angle.
[0009] In an optional embodiment, the first preset angle is 5-45 degrees.
[0010] In an optional embodiment, the second preset angle is 5-45 degrees.
[0011] In an optional embodiment, the air passage of the first air outlet nozzle gradually decreases along the air outlet direction.
[0012] In an optional embodiment, the air passage of the second air outlet nozzle gradually decreases along the air outlet direction.
[0013] In an optional embodiment, the sticky roller includes: a first sticky roller, the first sticky roller is arranged downstream of the transmission path of the dust blowing device, and the first sticky roller is configured to stick to impurities on the first surface of the current collector film.
[0014] In an optional embodiment, the sticky roller further includes: a second sticky roller, which is arranged downstream of the transmission path of the dust blowing device, and the second sticky roller is configured to stick to impurities on the second surface of the current collector film.
[0015] In an optional embodiment, the cleaning device further includes: a first dust suction device, which is arranged downstream of the transmission path of the first dust blowing part, and the first dust suction device is configured to collect impurities blown out by the first dust suction device.
[0016] In an optional embodiment, the cleaning device further includes: a second dust suction device, which is arranged downstream of the transmission path of the second dust blowing part, and the second dust suction device is configured to collect impurities blown out by the second dust suction device.
[0017] In an optional embodiment, the cleaning device further includes: a first dust removal roller, the first dust removal roller being arranged at an end of the first sticky roller away from the transmission path, and the viscosity coefficient of the first dust removal roller being greater than the viscosity coefficient of the first sticky roller.
[0018] In an optional embodiment, the cleaning device further includes: a second dust removal roller, the second dust removal roller is arranged at an end of the second sticky roller away from the transmission path, and the viscosity coefficient of the second dust removal roller is greater than the viscosity coefficient of the second sticky roller.
[0019] In an optional embodiment, the rolling device includes: a first roller and a second roller, the first roller and the second roller are configured to roll the current collector film between the first roller and the second roller; an adjustment device, the adjustment device is configured to adjust the distance between the first roller and the second roller.
[0020] In an optional embodiment, the distance between the first roller and the second roller is 2×10 1 -1×10 5 μm.
[0021] In an optional embodiment, the cleaning device further includes: a first scraper assembly, the first scraper assembly is provided on the first roller, and the first scraper assembly is configured to scrape impurities on the surface of the first roller.
[0022] In an optional embodiment, the cleaning device further includes: a second scraper assembly, the second scraper assembly is provided on the second roller, and the second scraper assembly is configured to scrape impurities on the surface of the second roller.
[0023] According to a specific embodiment of the present disclosure, on the other hand, the present disclosure provides a vacuum coating post-processing system, and the vacuum coating post-processing system includes: a cleaning device as described in any one of the above technical solutions.
[0024] Compared with the prior art, the above solution of the embodiment of the present disclosure has at least the following beneficial effects:
[0025] The cleaning device disclosed in the present invention makes the current collector film first pass through the dust blowing equipment to blow away the loose aluminum splashes and other substances remaining on the surface of the current collector film; and then pass through the first dust sticking roller and the second dust sticking roller to remove some relatively firm aluminum slag and impurities on the first and second surfaces of the current collector film. After the sticking is completed, it passes through the rolling equipment to make the thickness of the current collector film after rolling within a range. After several treatments, the current collector film can effectively control the height of the aluminum splash point, and at the same time, avoid perforation during the rolling process caused by impurities on the surface of the current collector film; it can ensure that the part exceeding the preset height is effectively removed without damaging the current collector film. The battery made of the current collector film treated by the cleaning device disclosed in the present invention can reduce the probability of short circuit of the battery, and at the same time improve the cycle, rate and other performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 A schematic structural diagram of a cleaning device according to an embodiment of the present disclosure is shown.
[0027] Figure 2 A schematic structural diagram of a dust blowing device according to an embodiment of the present disclosure is shown.
[0028] Figure 3 A schematic structural diagram of a dust blowing device according to another embodiment of the present disclosure is shown.
[0029] Figure 4 A schematic structural diagram of a dust blowing device according to another embodiment of the present disclosure is shown.
[0030] Figure 5 A schematic structural diagram of a rolling device according to an embodiment of the present disclosure is shown.
[0031] Reference numerals:
[0032] 100: dust blowing device; 110: first dust blowing unit; 111: first air cavity; 112: first air inlet; 113: first air outlet; 114: first dust collecting device; 120: second dust blowing unit; 121: second air cavity; 122: second air inlet; 123: second air outlet; 124: second dust collecting device;
[0033] 200: first sticky roller;
[0034] 300: second sticky roller;
[0035] 400: rolling equipment; 410: first roller; 420: second roller;
[0036] 500: first dust removal roller;
[0037] 600: second dust removal roller;
[0038] 700: first scraper assembly;
[0039] 800: second scraper assembly;
[0040] 900: current collector film; 910: unwinding mechanism; 920: winding mechanism; 930: guide roller. DETAILED DESCRIPTION
[0041] To make the objectives, technical solutions, and advantages of the present disclosure more clear, the present disclosure will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present disclosure, rather than all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort are intended to fall within the scope of protection of the present disclosure.
[0042] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms "a," "an," "the," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms, and unless the context clearly indicates otherwise, "a plurality" generally includes at least two.
[0043] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.
[0044] It should be understood that although the terms "first," "second," "third," etc. may be used to describe structures in the embodiments of the present disclosure, these structures should not be limited to these terms. These terms are merely used to distinguish different structures. For example, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component without departing from the scope of the embodiments of the present disclosure.
[0045] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.
[0046] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or device. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or device comprising the element.
[0047] In related technologies, during the evaporation process, splashes are deposited onto the composite current collector. These splashes have a certain height and density, which can cause the coating process to break or even render the film unusable. Highly abnormal aluminum chips deposited on the current collector surface can pose a significant safety risk to the finished battery, increasing the probability of short circuits. The failure mechanisms are as follows: First, large metal particles on the material surface pierce the separator, causing physical penetration and short circuits. Second, large metal particles cause the current collector active material to detach, resulting in uneven surface density distribution, affecting the battery's cycle and rate performance. Third, during charging, the positive potential rises, causing metal to dissolve in the copper foil, aluminum foil, current collector, and separator. As the electrolyte diffuses, metal is deposited on the negative electrode, piercing the separator and causing a short circuit. To address these technical issues, related technologies have addressed the following: one approach is to reduce the probability of splashes by modifying the evaporator; another is to increase the distance between the film material and the evaporator. These methods are limited to reducing the probability of splashes on the film material surface and cannot prevent the significant safety risks posed by highly abnormal splashes to the battery.
[0048] To address at least one of the aforementioned technical issues, the present disclosure provides a cleaning device and a vacuum coating post-processing system. The cleaning device is used for vacuum coating post-processing and may include: a dust blowing device 100 configured to blow dust from the surface of a current collector film 900; a sticky roller located downstream of the conveying path of the dust blowing device 100 and configured to adhere to impurities on the surface of the current collector film 900; and a rolling device 400 located downstream of the conveying path of the sticky roller. The current collector film 900 is processed by rolling, and high-splash points are rolled down to a fixed size to reduce the size of the splashes, thereby avoiding the occurrence of belt breakage during the coating process. The composite current collector is directly rolled after post-processing. The aluminum splashes on the surface of the current collector will cause perforations in the base film during rolling, resulting in more pinhole defects, affecting the quality of the composite current collector. During the rolling process, the aluminum splashes will adhere to the pressure roller, forming convex points on the pressure roller, and forming periodic defects during the rolling process. The aluminum splashes on the surface of the current collector film 900 are divided into easy-to-peel and difficult-to-peel. Adding compressed air purge and roller sticking removal before rolling can remove the easy-to-peel aluminum splashes in advance, avoiding the aluminum splashes during the rolling process. The aluminum splashes will be removed and air knife purged before rolling to reduce the aluminum splashes from adhering to the pressure roller during the rolling process. A scraping device is attached to the pressure roller to effectively scrape the aluminum splashes on the pressure roller, avoiding periodic bumps and concave-convex points formed by pressure roller defects. The current collector film 900 is treated with the cleaning device disclosed in the present invention, effectively avoiding perforation defects caused by aluminum slag or impurities during the rolling process.
[0049] Optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
[0050] Figure 1 FIG. 1 shows a schematic structural diagram of a cleaning device according to an embodiment of the present disclosure. Figure 1 As shown, according to a specific embodiment of the present disclosure, a cleaning device is provided for post-vacuum coating treatment. The cleaning device may include: a dust blowing device 100 configured to blow dust from the surface of a current collector film 900; a dust sticking roller located downstream of the conveying path of the dust blowing device 100, configured to stick to impurities on the surface of the current collector film 900; and a rolling device 400 located downstream of the conveying path of the dust sticking roller. The cleaning device of the present disclosure first passes the current collector film 900 through the dust blowing device 100 to remove loose aluminum splatters and other substances remaining on the surface of the current collector film 900. The film then passes through a first and second dust sticking rollers 200 and 300 to remove relatively firm aluminum slag and impurities on the first and second surfaces of the current collector film 900. After sticking, the film passes through the rolling device 400 to maintain the thickness of the pressed current collector film 900 within a certain range. After several treatments, the height of the aluminum splash point on the current collector film 900 is effectively controlled, while also preventing perforations during rolling caused by impurities on the surface of the current collector film 900. The portion exceeding the preset height can be effectively removed without damaging the current collector film 900. Batteries manufactured using the current collector film 900 treated with the disclosed cleaning device can reduce the probability of short circuits while improving cycle and rate performance.
[0051] Figure 2 A schematic structural diagram of a dust blowing device 100 according to an embodiment of the present disclosure is shown. Figure 3 FIG. 1 shows a schematic structural diagram of a dust blowing device 100 according to another embodiment of the present disclosure. Figure 2 and Figure 3As shown, in some embodiments, the dust blowing device 100 may include: a first dust blowing part 110, the first dust blowing part 110 is a strip structure, the first dust blowing part 110 may include: a first air cavity 111, one end of the first air cavity 111 is provided with a first air inlet 112, the first air inlet 112 is configured to connect to a blowing device; the other end of the first air cavity 111 is provided with a first air outlet nozzle 113, the first air outlet nozzle 113 is configured to blow dust to the first surface of the collector film 900; a second dust blowing part 120, the second dust blowing part 120 is a strip structure, the second dust blowing part 120 may include: a second air cavity 121, one end of the second air cavity 121 is provided with a second air inlet 122, the second air inlet 122 is configured to connect to a blowing device; the other end of the second air cavity 121 is provided with a second air outlet nozzle 123, the second air outlet nozzle 123 is configured to blow dust to the second surface of the collector film 900. The first air inlet 112 and the second air inlet 122 of the present disclosure are respectively connected to an air pump or other blowing device to blow dust off the current collector film 900. Figure 3 As shown, in one optional embodiment, the air duct of the first air outlet nozzle 113 gradually decreases along the outlet direction; in another optional embodiment, the air duct of the second air outlet nozzle 123 gradually decreases along the outlet direction. The first air inlet 112 and the second air inlet 122 provide air at a certain flow rate, the air cavity (the first air cavity 111 and the second air cavity 121) is an air circulation duct, and the air outlet (the end of the first air outlet nozzle 113 and the second air outlet nozzle 123, away from the first air cavity 111 and the second air cavity 121) is a slit. Air is squeezed through the slit, blowing out air at a certain flow rate to clean the surface of the current collector.
[0052] In some embodiments, the sticky roller may include: a first sticky roller 200, the first sticky roller 200 is arranged downstream of the transmission path of the dust blowing device 100, and the first sticky roller 200 is configured to stick to impurities on the first side of the current collector film 900; a second sticky roller 300, the second sticky roller 300 is arranged downstream of the transmission path of the dust blowing device 100, and the second sticky roller 300 is configured to stick to impurities on the second side of the current collector film 900.
[0053] In some embodiments, the angle between the air outlet direction of the first air outlet nozzle 113 and the first surface is a first preset angle. In an optional embodiment, the angle between the air outlet direction of the second air outlet nozzle 123 and the second surface is a second preset angle. In some embodiments, the first preset angle is 5-45 degrees. In an optional embodiment, the second preset angle is 5-45 degrees. Specifically, the angle between the air outlet direction of the first air outlet nozzle 113 and the conveying direction of the current collector film 900 is a first preset angle. The angle between the air outlet direction of the second air outlet nozzle 123 and the conveying direction of the current collector film 900 is a second preset angle. Aluminum splash points and dust can be blown toward the dust collection device.
[0054] Figure 4 FIG. 1 shows a schematic structural diagram of a dust blowing device 100 according to another embodiment of the present disclosure. Figure 4 As shown, in some embodiments, the cleaning device may further include: a first dust collection device 114, located downstream of the conveying path of the first dust blowing section 110, and configured to collect impurities blown out by the first dust collection device 114. In an optional embodiment, a second dust collection device 124 is located downstream of the conveying path of the second dust blowing section 120, and configured to collect impurities blown out by the second dust collection device 124. By collecting the impurities blown out by the first dust collection device 114 and the second dust collection device 124, respectively, the first dust collection device 114 and the second dust collection device 124 can be used to concentrate aluminum splatter and other impurities and blow them toward the dust collection device. During actual use, the first dust collection device 114 and the first dust blowing section 110 can use the same blowing device, and the air inlet of the blowing device is connected to the first dust collection device 114. It should be noted that a filter is set between the air inlet of the blowing device and the first dust collection device 114, and only air flow is allowed to pass through. When the blowing device provides air flow to the first dust blowing section 110, the first dust collection device 114 collects the air flow, thereby completing the simultaneous dust collection and dust blowing; the second dust collection device 124 and the second dust blowing section 120 can use the same blowing device, and the air inlet of the blowing device is connected to the second dust collection device 124. It should be noted that a filter is set between the air inlet of the blowing device and the second dust collection device 124, and only air flow is allowed to pass through. When the blowing device provides air flow to the second dust blowing section 120, the second dust collection device 124 collects the air flow, thereby completing the simultaneous dust collection and dust blowing.
[0055] In some embodiments, the cleaning device may further include: a first dust removal roller 500, disposed at the end of the first sticky roller 200 away from the conveying path; the viscosity coefficient of the first dust removal roller 500 is greater than that of the first sticky roller 200. In an optional embodiment, a second dust removal roller 600 is disposed at the end of the second sticky roller 300 away from the conveying path; the viscosity coefficient of the second dust removal roller 600 is greater than that of the second sticky roller 300. It should be noted that both the first sticky roller 200 and the second sticky roller 300 are low-viscosity rollers, which function to continuously clean aluminum splatter or other substances from the surface of the current collector film 900; and both the first dust removal roller 500 and the second dust removal roller 600 are high-viscosity rollers, which function to clean impurities adhering to the low-viscosity rollers.
[0056] Figure 5 FIG. 1 shows a schematic structural diagram of a rolling device according to an embodiment of the present disclosure. Figure 5 As shown, in some embodiments, the rolling device 400 may include: a first roller 410 and a second roller 420, wherein the first roller 410 and the second roller 420 are configured to roll the current collector film 900 passing between the first roller 410 and the second roller 420; and an adjustment device configured to adjust the distance between the first roller 410 and the second roller 420. In an optional embodiment, the distance between the first roller 410 and the second roller 420 is 2×10 1 -1×10 5 μm. It should be noted that the axial lengths of the first roller 410 and the second roller 420 are greater than or equal to the width of the current collector film 900. By adjusting the distance between the first roller 410 and the second roller 420 using the adjustment device, the height of the aluminum splash point on the current collector film 900 is controlled, effectively avoiding breakage during the coating process caused by the splash point height and increasing product yield.
[0057] In some embodiments, the cleaning device may further include a first scraper assembly 700, mounted on the first roller 410 and configured to scrape impurities from the surface of the first roller 410. In an alternative embodiment, the cleaning device may further include a second scraper assembly 800, mounted on the second roller 420 and configured to scrape impurities from the surface of the second roller 420. Scraping devices (the first scraper assembly 700 and the second scraper assembly 800) are attached to the first roller 410 and the second roller 420 to continuously or periodically remove impurities (primarily aluminum slag) from the roller press 400, effectively scraping away aluminum splatter on the rollers and avoiding periodic uneven spots caused by roller defects. In an alternative embodiment, the first scraper assembly 700 may include a first scraper configured to scrape impurities adhering to the surface of the first roller 410; and a first dust box configured to collect impurities scraped by the first scraper. In an optional embodiment, the first scraper has two substantially parallel sides, one of which serves as a sidewall of the first dust box, and the other is disposed on the surface of the first roller 410. In an optional embodiment, the end of the first scraper away from the first dust box is bent toward the first roller 410, forming a deflection portion. This deflection portion facilitates improved dust collection efficiency. The first scraper can be made of graphite, stainless steel, or other materials. One end of the first scraper just barely contacts the surface of the first roller 410. As the first roller 410 rotates, the first scraper scrapes impurities adhering to the surface of the first roller 410 and drops them into the first dust box. The first scraper is a plate-shaped structure, and its length is greater than or equal to the axial length of the first roller 410. In an optional embodiment, the second scraper assembly 800 may include: a second scraper configured to scrape impurities adhering to the surface of the second roller 420; and a second dust box configured to collect impurities scraped by the second scraper. The second scraper has two roughly parallel sides, one side serving as the side wall of the second dust box, and the other side being provided on the surface of the second roller 420. In an optional embodiment, the end of the second scraper away from the second dust box is deflected toward the second roller 420 to form a deflection portion. The deflection portion facilitates improving the efficiency of dust collection. The material of the second scraper can be graphite, stainless steel, etc. One end of the second scraper just contacts the surface of the second roller 420. When the second roller 420 rotates, the second scraper scrapes off impurities stuck to the surface of the second roller 420 and drops them into the second dust box. The second scraper is a plate-like structure, and the length of the second scraper is greater than or equal to the axial length of the second roller 420.In an optional embodiment, the position where the first scraper contacts the surface of the first roller 410 is located below the horizontal plane where the center of the first roller 410 is located; in another optional embodiment, the position where the second scraper contacts the surface of the second roller 420 is located below the horizontal plane where the center of the second roller 420 is located.
[0058] In some embodiments, the cleaning device may further include a conveying mechanism configured to convey the current collector film 900 so that the current collector film 900 passes through the conveying path of the cleaning device. In an alternative embodiment, the conveying mechanism may include an unwinding mechanism 910 configured to release the current collector film 900; a rewinding mechanism 920 configured to rewind the current collector film 900 after being processed by the cleaning device; and a guide roller 930 disposed in the conveying path of the current collector film 900. In an alternative embodiment, a plurality of guide rollers 930 are provided. In another optional embodiment, at least one guide roller 930 is provided in the transmission path between the unwinding mechanism 910 and the dust blowing device 100; in another optional embodiment, at least one guide roller 930 is provided in the transmission path between the dust blowing device 100 and the first sticky roller 200; in another optional embodiment, at least one guide roller 930 is provided in the transmission path between the first sticky roller 200 and the second sticky roller 300; in another optional embodiment, at least one guide roller 930 is provided in the transmission path between the second sticky roller 300 and the rolling device 400; in another optional embodiment, at least one guide roller 930 is provided in the transmission path between the rolling device 400 and the winding mechanism 920.
[0059] According to a specific embodiment of the present disclosure, on the other hand, a vacuum coating post-processing system is provided, and the vacuum coating post-processing system may include: a cleaning device as described in any one of the above embodiments.
[0060] The present disclosure is intended to protect a cleaning device and a vacuum coating post-processing system. The cleaning device is used for vacuum coating post-processing and may include: a dust blowing device 100 configured to blow dust from the surface of a current collector film 900; a dust sticking roller located downstream of the conveying path of the dust blowing device 100 and configured to stick to impurities on the surface of the current collector film 900; and a rolling device 400 located downstream of the conveying path of the dust sticking roller. The cleaning device of the present disclosure first passes the current collector film 900 through the dust blowing device 100 to remove loose aluminum splatters and other substances remaining on the surface of the current collector film 900. The current collector film 900 then passes through a first and second dust sticking rollers 200 and 300 to remove relatively firm aluminum slag and impurities on the first and second surfaces of the current collector film 900. After sticking, the current collector film 900 passes through the rolling device 400 to maintain a thickness within a certain range after rolling. After several treatments, the height of the aluminum splash point on the current collector film 900 is effectively controlled, while also preventing perforations during rolling caused by impurities on the surface of the current collector film 900. The portion exceeding the preset height can be effectively removed without damaging the current collector film 900. Batteries manufactured using the current collector film 900 treated with the disclosed cleaning device can reduce the probability of short circuits while improving cycle and rate performance.
[0061] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. References to the common and similar parts between the various embodiments will be sufficient. For the systems or devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, their descriptions are relatively simple; for relevant details, refer to the descriptions of the methods.
[0062] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.
Claims
1. A cleaning device for vacuum coating post-processing, characterized in that: include: a dust blowing device configured to blow dust off the surface of the current collector film; A sticky roller, the sticky roller being arranged downstream of the conveying path of the dust blowing device, the sticky roller being configured to stick to impurities on the surface of the current collector film; A roller pressing device is provided downstream of the conveying path of the sticky roller.
2. The cleaning device according to claim 1, characterized in that The dust blowing equipment comprises: a first dust blowing portion, the first dust blowing portion being a strip-shaped structure, comprising: a first air cavity, one end of the first air cavity being provided with a first air inlet, the first air inlet being configured to be connected to an air blowing device; the other end of the first air cavity being provided with a first air outlet, the first air outlet being configured to blow dust toward the first surface of the current collector film; The second dust blowing part is a strip-shaped structure, and the second dust blowing part includes: a second air cavity, a second air inlet is provided at one end of the second air cavity, and the second air inlet is configured to connect to a blowing device; a second air outlet is provided at the other end of the second air cavity, and the second air outlet is configured to blow dust onto the second surface of the current collector film.
3. The cleaning device according to claim 2, characterized in that The angle between the air outlet direction of the first air outlet nozzle and the first surface is a first preset angle; and / or The angle between the air outlet direction of the second air outlet nozzle and the second surface forms a second preset angle.
4. The cleaning device according to claim 2, characterized in that The air passage of the first air outlet nozzle gradually decreases along the air outlet direction; and / or The air passage of the second air outlet nozzle gradually decreases along the air outlet direction.
5. The cleaning device according to claim 1, characterized in that The sticky roller comprises: a first sticky roller, the first sticky roller being disposed downstream of the conveying path of the dust blowing device, the first sticky roller being configured to stick to impurities on the first surface of the current collector film; The second sticky roller is arranged downstream of the conveying path of the dust blowing device, and the second sticky roller is configured to stick to impurities on the second surface of the current collector film.
6. The cleaning device according to claim 2, characterized in that Also includes: a first dust collection device, the first dust collection device being disposed downstream of a conveying path of the first dust blowing portion, the first dust collection device being configured to collect impurities blown out by the first dust collection device; and / or The second dust collecting device is arranged downstream of the transmission path of the second dust blowing part, and the second dust collecting device is configured to collect impurities blown out by the second dust collecting device.
7. The cleaning device according to claim 5, characterized in that Also includes: a first dust removal roller, the first dust removal roller being disposed at an end of the first sticky roller away from the conveying path, the viscosity coefficient of the first dust removal roller being greater than the viscosity coefficient of the first sticky roller; and / or The second dust removal roller is arranged at one end of the second sticky roller away from the transmission path, and the viscosity coefficient of the second dust removal roller is greater than the viscosity coefficient of the second sticky roller.
8. The cleaning device according to claim 1, characterized in that The rolling equipment comprises: a first roller and a second roller, wherein the first roller and the second roller are configured to roll the current collector film passing between the first roller and the second roller; An adjustment device is configured to adjust the distance between the first roller and the second roller.
9. The cleaning device according to claim 8, characterized in that Also includes: a first scraper assembly, the first scraper assembly being disposed on the first roller, the first scraper assembly being configured to scrape impurities off the surface of the first roller; and / or The second scraper assembly is provided on the second roller, and the second scraper assembly is configured to scrape impurities on the surface of the second roller.
10. A vacuum coating post-processing system, characterized in that: include: A cleaning device as claimed in any one of claims 1 to 9.