Compression roller cleaning device and positive and negative pole piece and diaphragm rolling device

Abstract

The utility model provides a compression roller cleaning device and a positive and negative pole piece and diaphragm rolling device, and relates to the technical field of battery manufacturing. The compression roller cleaning device comprises a fixing piece and a scraper. The scraper is detachably arranged on the fixing part, an arc-shaped knife face is arranged on the concave face of the scraper and can be completely attached to the surface of the grinding roller, and when the grinding roller works, the whole concave face of the arc-shaped knife face can scrape and sweep the grinding roller at the same time. The scraper is detachably arranged on the fixing piece, so that the scraper is convenient to overhaul, maintain or replace; the concave arc-shaped knife face is arranged on the scraper, so that the grinding roller can be scraped and swept through the whole concave face of the arc-shaped knife face at the same time, and the cleaning quality and efficiency are improved; at least part of the arc-shaped cutter face is coated with the flexible layer, so that particle impurities left on the grinding roller are cleaned through the flexible layer after the grinding roller is scraped by the arc-shaped cutter face, the grinding roller is thoroughly cleaned, and impurities such as dust on the grinding roller are effectively removed under the condition that the grinding roller is not damaged.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and more specifically, to a roller cleaning device and a device for rolling positive and negative electrode sheets and separators. Background Technology

[0002] During the battery cell manufacturing process, the rolling rollers need to press the positive and negative electrode sheets and the separator tightly to ensure the quality of the battery cells. After working for a long time, electrode sheet materials and separator materials are easily adhered to the surface of the rolling rollers, which can lead to problems such as separator puncture, poor consistency of composite sheet thickness, and narrow rolling width, causing short circuits in the cells and consequently reducing the cell qualification rate.

[0003] However, manual cleaning of the rollers is currently the most common method. Due to the high compression ratio and viscosity of the rollers and related materials, impurities such as carbon powder and ceramics stuck on the rollers are not easy to clean. Manual cleaning is not only inefficient, but also cannot completely remove the impurities from the rollers. Utility Model Content

[0004] The purpose of this invention is to provide a roller cleaning device and a positive and negative electrode sheet and diaphragm rolling device, which can solve the manufacturing quality problem of battery cell composite sheets caused by dust particle contamination of the roller. It can not only automatically clean the roller and reduce manual intervention, but also effectively improve the cleaning efficiency. It can effectively remove impurities on the electrode sheet rolling roller to ensure the rolling quality and efficiency of the battery cell composite sheets.

[0005] The embodiments of this utility model are implemented as follows:

[0006] In a first aspect, this utility model provides a pressure roller cleaning device, comprising:

[0007] Fasteners;

[0008] A scraper is detachably mounted on the fixing member. The scraper has a concave arc-shaped blade surface for contacting and scraping the roller. At least a portion of the arc-shaped blade surface is provided with a flexible layer for cleaning the roller.

[0009] In an optional embodiment, the scraper is provided with a liquid injection structure for injecting cleaning agent and for delivering the cleaning agent to the arc-shaped blade surface so that the cleaning agent wets the flexible layer to facilitate cleaning the rolling action.

[0010] In an optional embodiment, the pressure roller cleaning device further includes a limiting member, the scraper is detachably connected to the fixing member by a fastener, the limiting member is disposed on the fixing member, the limiting member is used to limit the scraper and to press the flexible layer.

[0011] In an optional embodiment, the pressure roller cleaning device further includes a mounting component, wherein the fixing component is detachably connected to the mounting component by fasteners.

[0012] In an optional embodiment, the pressure roller cleaning device further includes a first driving member and a guide rail. The mounting member is slidably disposed on the guide rail. The first driving member is connected to the mounting member and is used to drive the mounting member to move along the guide rail, thereby driving the scraper to move along the axial direction of the pressure roller.

[0013] In an optional embodiment, the pressure roller cleaning device further includes a second driving member connected to the mounting member for driving the mounting member to move, thereby causing the scraper to move closer to or away from the pressure roller.

[0014] In an optional embodiment, the pressure roller cleaning device further includes a magnetic element disposed on the mounting member, the magnetic element being used to magnetically attract the fixing member.

[0015] In an optional embodiment, the pressure roller cleaning device further includes a knob disposed on the top of the mounting component.

[0016] In an optional embodiment, the pressure roller cleaning device further includes a dust suction component disposed on the underside of the scraper, the dust suction component being connected to a negative pressure pipe to absorb dust.

[0017] Secondly, this utility model provides a positive and negative electrode sheet and diaphragm rolling device, including a rolling roller and a roller cleaning device as described in any of the foregoing embodiments, wherein the arc of the arc-shaped blade surface is the same as the arc of the rolling roller.

[0018] The beneficial effects of the pressure roller cleaning device and the positive and negative electrode sheet and diaphragm rolling device provided in this utility model embodiment include: by detachably setting the scraper to the fixing part, it is convenient to inspect, maintain or replace the scraper; by setting the scraper with a concave arc-shaped blade surface, the rolling roller can be scraped through the entire arc-shaped blade surface at the same time, thereby improving the cleaning quality and efficiency; by setting a flexible layer in at least part of the arc-shaped blade surface, the particulate impurities remaining on the rolling roller after the arc-shaped blade surface scrapes the rolling roller can be cleaned through the flexible layer, so as to thoroughly clean the rolling roller, and realize the effective removal of dust and other impurities on the rolling roller without damaging the rolling roller. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the positive and negative electrode sheet and diaphragm rolling device provided in this embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the pressure roller cleaning device provided in an embodiment of this utility model;

[0022] Figure 3 A schematic diagram of a portion of the pressure roller cleaning device provided in an embodiment of this utility model.

[0023] Icons: 1-Positive and negative electrode sheet and diaphragm rolling device; 10-Pressure roller cleaning device; 11-Rolling roller; 100-Fixing component; 200-Scraper; 210-Arc-shaped blade; 220-Liquid injection structure; 300-Limiting component; 400-Mounting component; 510-First driving component; 520-Guide rail; 600-Second driving component; 700-Magnetic component; 800-Knob; 900-Dust collection component; 910-Opening. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In the manufacturing process of lithium-ion batteries, the density and thickness uniformity of the composite sheet are crucial to battery performance. To improve the density and thickness consistency of the composite sheet surface material, thereby increasing the battery's energy density and performance, the positive and negative electrode sheets and the separator need to undergo composite rolling during cell manufacturing.

[0031] During the rolling process, the rolling rollers may wear down due to friction or accumulate dust and particulate matter. These factors can reduce the rolling quality, affect the surface quality and thickness uniformity of the electrode sheets, and may also affect the straightness, roll jump, rigidity and other properties of the rolling rollers due to accumulated dust or other particulate matter. After long-term operation, electrode sheet material and separator material are prone to adhere to the surface of the rolling rollers, leading to problems such as separator puncture, poor thickness consistency of composite sheets, and narrow rolling width, which can cause short circuits in the cells and consequently reduce the cell qualification rate.

[0032] However, the current common cleaning method involves manual wiping with lint-free cloths, which requires stopping the machine for wiping, is labor-intensive, and time-consuming, resulting in extremely low cleaning efficiency. Furthermore, the wiping station in the lithium battery rolling process is mostly operated manually, which is not only complex and costly, but also prone to causing injury to operators during movement, disassembly, and cleaning. Under prolonged working conditions, the accumulation of particles and impurities on the surface of the rolling rollers significantly affects product quality.

[0033] Based on the above issues, please refer to Figures 1 to 3 This utility model provides a positive and negative electrode sheet and separator rolling device 1, which is applied to the field of lithium battery manufacturing technology.

[0034] In this embodiment, the positive and negative electrode sheet and separator rolling device 1 includes a rolling roller 11 and a rolling roller cleaning device 10. The rolling roller 11 is used to perform composite rolling of the positive and negative electrode sheets and the separator to increase the density of the composite sheet, thereby improving the energy density and performance of the battery. The rolling roller cleaning device 10 can clean the rolling roller 11 to solve the battery electrode manufacturing quality problem caused by dust particle contamination of the rolling roller 11. It can not only automatically clean the rolling roller 11 and reduce manual intervention, but also effectively improve the cleaning efficiency and effectively remove impurities on the electrode rolling roller 11 to ensure the rolling quality and efficiency of the electrode sheets.

[0035] In detail, the pressure roller cleaning device 10 includes a fixing member 100 and a scraper 200.

[0036] The scraper 200 is detachably mounted on the fixing member 100. The scraper 200 has a concave arc-shaped blade surface 210. The entire concave surface of the arc-shaped blade surface 210 simultaneously adheres to the rolling roller 11 to scrape the rolling roller 11.

[0037] In this embodiment, the scraper 200 is detachably mounted on the fixing member 100, which facilitates inspection, maintenance, or replacement of the scraper 200. Furthermore, by providing a concave arc-shaped blade surface 210 on the scraper 200, the upper and lower ends of the arc-shaped blade surface 210 can simultaneously scrape the roller 11, thereby improving cleaning quality and efficiency. Therefore, the roller cleaning device 10 provided by this utility model has a high degree of automation, effectively scraping and cleaning the roller 11 with the scraper 200 to thoroughly clean dust and other particulate impurities from the roller 11, while preventing damage to the roller 11.

[0038] Optionally, the scraper 200 is made of polyurethane (polyurethane). Of course, it is not limited to this; the scraper 200 can also be a rigid mechanism made of other materials. The material of the scraper 200 is not specifically limited here. A flexible layer is provided on the surface of the scraper. The flexible layer is made of a flexible material, such as sponge, lint-free cloth, etc.

[0039] In this embodiment, because polyurethane has good stability, chemical resistance, resilience and mechanical properties, it not only enables the scraper 200 to stably scrape the roller 11 and achieve a good cleaning effect, but also ensures that there is a suitable contact pressure with the roller 11, avoiding rigid contact between the scraper 200 and the roller 11 and damage to the roller 11.

[0040] During the actual operation of the pressure roller cleaning device, the roller 11 is first scraped by the arc-shaped blade 210 of the scraper 200 to clean dust and other particulate impurities on the roller 11. Then, the part of the arc-shaped blade 210 with the flexible layer is aligned with the roller 11 to sweep away the particulate impurities remaining on the roller 11, thereby ensuring that the roller 11 is thoroughly cleaned. In addition, the flexible layer is made of flexible material to avoid damaging the roller 11.

[0041] It is understood that the flexible layer can be fixed to the arc-shaped blade surface 210 by bonding or other means; the flexible layer can also be detachably set on the arc-shaped blade surface 210, so that after the arc-shaped blade surface 210 scrapes the rolling roller 11, the flexible layer can be set on the arc-shaped blade surface 210 to clean the rolling roller 11 through the flexible layer.

[0042] It should be noted that the curvature of the arc-shaped blade 210 is the same as that of the rolling roller 11.

[0043] Furthermore, the scraper 200 is provided with a liquid injection structure 220, which is used to inject cleaning agent and to deliver the cleaning agent to the arc-shaped blade surface 210 so that the cleaning agent wets the flexible layer to facilitate cleaning the roller 11.

[0044] In this embodiment, a cleaning agent can be injected into the interior of the scraper 200 through the injection structure 220. The cleaning agent can be a reagent with cleaning effect such as alcohol. The surface of the arc-shaped blade 210 is provided with grooves. After the cleaning agent flows in through the injection structure 220 of the scraper 200, it fully wets the flexible layer on the surface of the arc-shaped blade 210, thereby achieving a better cleaning effect on the roller.

[0045] Furthermore, the pressure roller cleaning device 10 also includes a limiting member 300. The scraper 200 is detachably connected to the fixing member 100 by fasteners. The limiting member 300 is disposed on the fixing member 100 and is used to limit the scraper 200.

[0046] In this embodiment, a limiting member 300 is provided on the fixing member 100 to limit the scraper 200 in the event of loose fasteners, preventing the scraper 200 from falling off the fixing member 100 and causing damage to the scraper 200, the pressing roller 11, and the composite sheet. The scraper 200 is detachably connected to the fixing member 100 by fasteners, facilitating quick disassembly of the scraper 200. The scraper 200 can be disassembled simply by loosening or removing the fasteners from the fixing member 100. Similarly, when installing the scraper 200, it is only necessary to lock it onto the fixing member 100 using the fasteners, making assembly and disassembly convenient and quick.

[0047] It should be noted that the limiting member 300 is also used to hold the flexible layer, thereby ensuring that the flexible layer is firmly set on the curved blade surface.

[0048] Furthermore, the pressure roller cleaning device 10 also includes a mounting component 400, and the fixing component 100 is detachably connected to the mounting component 400 by fasteners, thereby facilitating the assembly or disassembly of the mounting component 400.

[0049] Optionally, the fasteners can be bolts, screws, or other components, as long as they enable detachable connection between the scraper 200 and the fixing member 100, and between the fixing member 100 and the mounting member 400. No specific limitations are imposed here.

[0050] Furthermore, the pressure roller cleaning device 10 also includes a first driving member 510 and a guide rail 520. The mounting member 400 is slidably disposed on the guide rail 520. The first driving member 510 is connected to the mounting member 400 and is used to drive the mounting member 400 to move along the guide rail 520, so as to drive the scraper 200 to move along the axial direction of the pressure roller 11.

[0051] In this embodiment, mounting holes (not shown) are provided on the upper and lower sides of the mounting member 400. There are two guide rails 520. The upper and lower mounting holes of the mounting member 400 are slidably engaged with the two guide rails 520 respectively. Thus, the mounting member 400 is driven to move along the extension direction of the guide rails 520 by the first driving member 510. Since the extension direction of the guide rails 520 is set parallel to the axial direction of the roller 11 in actual application, the first driving member 510 can drive the mounting member 400 to move along the axial direction of the roller 11 and can reciprocate along this direction, thereby driving the scraper 200 to reciprocate along the axial direction on the surface of the roller 11, thereby achieving comprehensive cleaning of the roller 11.

[0052] Furthermore, the pressure roller cleaning device 10 also includes a second drive member 600, which is connected to the mounting member 400 and is used to drive the mounting member 400 to move so as to move the scraper 200 closer to or away from the pressure roller 11.

[0053] In this embodiment, the second driving member 600 drives the mounting member 400 to move, which in turn drives the fixing member 100 and the scraper 200 to move. This causes the scraper 200 to move closer to or further away from the roller 11. When the roller 11 stops working or the scraper 200 needs to be replaced, the second driving member 600 drives the scraper 200 away from the roller 11, achieving a retraction action. When the roller 11 needs to be cleaned, the second driving member 600 drives the scraper 200 closer to the roller 11 to scrape the surface of the roller 11. The driving force of the second driving member 600 can also be controlled according to the surface contamination of the roller 11, thereby controlling the contact force between the scraper 200 and the surface of the roller 11, thus achieving a good cleaning effect.

[0054] It is understood that the output end of the second drive unit 600 can be connected to the mounting part 400 or the first drive unit 510, as long as the second drive unit 600 drives the scraper 200 to move in the direction close to or away from the rolling roller 11, no specific limitation is made here.

[0055] Optionally, both the first driving member 510 and the second driving member 600 can be cylinders. Of course, in other embodiments, they can also be other driving devices, as long as they can achieve the above-mentioned driving action. No specific limitation is made here.

[0056] Furthermore, the pressure roller cleaning device 10 also includes a magnetic element 700, which is disposed on the mounting member 400 and is used to magnetically attract and fix the member 100.

[0057] In this embodiment, by providing a magnetic element 700 at the bottom of the mounting element 400 to magnetically attract the fixing element 100, the stability of the fixing element 100 installed on the mounting element 400 is further improved.

[0058] Furthermore, the pressure roller cleaning device 10 also includes a knob 800, which is located on the top of the mounting member 400.

[0059] In this embodiment, a knob 800 is provided on the top of the mounting member 400 to facilitate user gripping. When it is necessary to disassemble the scraper 200, the user can hold the knob 800 with one hand and loosen the fasteners on the fixing member 100 with the other hand to remove the scraper 200 from the fixing member 100, thus facilitating the replacement of the scraper 200.

[0060] Furthermore, the pressure roller cleaning device 10 also includes a dust suction component 900, which is disposed on the lower side of the scraper 200 and is used to connect to a negative pressure pipe to absorb dust.

[0061] In this embodiment, a dust-collecting component 900 is provided to absorb the dust particles scraped off by the scraper 200, thereby avoiding pollution to the device and the environment and achieving a good cleaning effect.

[0062] It is worth mentioning that the dust collection component 900 is provided with multiple openings 910, and the openings 910 are spaced apart from the rolling roller 11. The cross-section of the openings 910 is concave arc-shaped. Through the negative pressure pipe, the openings 910 can achieve a certain negative pressure wind speed, thereby eliminating dust particles.

[0063] In summary, this utility model provides a pressure roller cleaning device 10 and a positive and negative electrode sheet and diaphragm rolling device 1. By detachably mounting the scraper 200 to the fixing member 100, it is convenient to inspect, maintain, or replace the scraper 200. By setting the scraper 200 with a concave arc-shaped blade surface 210, the rolling roller 11 can be scraped simultaneously through the arc-shaped blade surface 210, thereby improving the cleaning quality and efficiency. The first driving member 510 and the second driving member 600 can adjust the scraping range and scraping force of the scraper 200. The dust collection member 900 collects the scraped dust particles, avoiding dust generation and reducing the pollution of equipment and environment caused by dust particles. It can be seen that the pressure roller cleaning device 10 provided by this utility model has a high degree of automation. It can effectively scrape and clean the rolling roller 11 through the scraper 200 to thoroughly clean the dust and other particulate impurities on the rolling roller 11 and avoid damage to the rolling roller 11.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pressure roller cleaning device, characterized in that, include: Fasteners; A scraper is detachably mounted on the fixing member. The scraper has a concave arc-shaped blade surface for contacting the rolling roller to scrape the rolling roller. At least a portion of the arc-shaped blade surface is provided with a flexible layer for cleaning the rolling roller. The pressure roller cleaning device also includes a mounting component, and the fixing component is detachably connected to the mounting component by fasteners; The pressure roller cleaning device further includes a first driving member and a guide rail. The mounting member is slidably disposed on the guide rail. The first driving member is connected to the mounting member and is used to drive the mounting member to move along the guide rail, so as to drive the scraper to move along the axial direction of the pressure roller. The pressure roller cleaning device further includes a second driving component, which is connected to the mounting component and is used to drive the mounting component to move so as to move the scraper closer to or away from the pressure roller.

2. The pressure roller cleaning device according to claim 1, characterized in that, The scraper is equipped with a liquid injection structure, which is used to inject cleaning agent and deliver the cleaning agent to the arc-shaped blade surface so that the cleaning agent wets the flexible layer to facilitate cleaning of the rolling roller.

3. The pressure roller cleaning device according to claim 1, characterized in that, The pressure roller cleaning device also includes a limiting member. The scraper is detachably connected to the fixing member by a fastener. The limiting member is disposed on the fixing member and is used to limit the scraper and to press the flexible layer.

4. The pressure roller cleaning device according to claim 1, characterized in that, The pressure roller cleaning device also includes a magnetic component, which is disposed on the mounting component and is used to magnetically attract the fixing component.

5. The pressure roller cleaning device according to claim 1, characterized in that, The pressure roller cleaning device also includes a knob located on the top of the mounting component.

6. The pressure roller cleaning device according to claim 1, characterized in that, The pressure roller cleaning device also includes a dust suction component, which is located on the lower side of the scraper and is used to connect to a negative pressure pipe to absorb dust.

7. A device for rolling positive and negative electrode sheets and a separator, characterized in that, It includes a pressing roller and a roller cleaning device as described in any one of claims 1-6, wherein the arc of the arc-shaped blade is the same as the arc of the pressing roller.

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