Ceramic edge coating device for improving virtual edge, pole piece production system and battery production line

Abstract

The utility model discloses a ceramic edge coating device for improving virtual edges, a pole piece production system and a battery production line, which belong to the technical field of batteries and comprise a coating assembly, a monitoring assembly and a drying assembly which are sequentially arranged along the advancing direction of a current collector, the coating assembly is used for independently coating ceramic slurry to an edge area of a current collector to form a ceramic edge; the monitoring assembly is connected with the coating assembly, the monitoring assembly is used for obtaining size information of the ceramic slurry coating the edge area in real time and transmitting the size information to the coating assembly, and the coating assembly dynamically adjusts the flow of the ceramic slurry of the spray head according to the size information; and the drying assembly is used for drying the edge area coated with the ceramic slurry. According to the utility model, the technical effects of avoiding the virtual edge defect of the positive plate and improving the yield can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and specifically relates to a ceramic edge coating device for improving virtual edges, an electrode sheet making system, and a battery production line. Background Technology

[0002] In the manufacturing process of lithium-ion batteries, the edge area of ​​the positive electrode sheet typically needs to be coated with a ceramic material to form a ceramic edge. The ceramic layer has high hardness, heat resistance, and chemical stability, forming a protective layer on the positive electrode sheet. In existing technologies, the ceramic edge and the positive electrode slurry are often coated simultaneously, that is, the ceramic slurry and the positive electrode slurry are simultaneously coated onto the current collector through a shared extrusion coating die. However, the simultaneous coating method is prone to the diffusion of low-concentration ceramic slurry into the high-concentration positive electrode slurry area, resulting in cross-contamination between the two slurries. After defects such as blurred edges, burrs, or uneven thickness appear on the ceramic edge, they will directly affect the dimensional accuracy and edge insulation performance of the positive electrode sheet, leading to a decrease in the yield of the positive electrode sheet.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this invention is that the positive electrode sheet is prone to having a false edge and has a low yield.

[0005] To address the aforementioned technical problems, this utility model provides a ceramic edge coating device for improving the appearance of ceramic edges. The ceramic edge coating device includes a coating component, a monitoring component, and a drying component arranged sequentially along the travel direction of the collector. The coating component is used to individually coat ceramic slurry onto the edge region of the collector to form a ceramic edge. The monitoring component is connected to the coating component and is used to acquire the size information of the ceramic slurry coated on the edge region in real time and transmit the size information to the coating component. The coating component dynamically adjusts the ceramic slurry flow rate of the nozzle according to the size information. The drying component is used to dry the edge region coated with the ceramic slurry.

[0006] Optionally, the ceramic edge coating apparatus further includes an unwinding assembly, a roller passing assembly, and a coating machine. The unwinding assembly is used to release the current collector; the roller passing assembly guides the current collector from the unwinding assembly through the roller passing assembly into the coating machine, and the coating machine is used to coat the dried current collector with a positive electrode slurry.

[0007] Optionally, the coating assembly includes a driver, a lead screw connected to the driver, a nozzle threadedly connected to the lead screw, and a flow regulating mechanism connected to the nozzle. The driver drives the lead screw to move the nozzle along a direction perpendicular to the current collector, so that the nozzle's projection onto the edge region along a direction close to the edge region covers the edge region. The nozzle is configured to coat the edge region with ceramic slurry. The flow regulating mechanism is connected to the monitoring assembly and is used to regulate the flow rate of the nozzle.

[0008] Optionally, the flow adjustment mechanism includes a flow control knob and a stepper motor connected to the flow control knob. After receiving the size information, the stepper motor drives the flow control knob to adjust the size of the nozzle opening cross-sectional area.

[0009] Optionally, the monitoring component includes a CCD camera and an image processing unit. The CCD camera acquires image information of the ceramic slurry coated on the edge region in real time. The image processing unit generates size information of the ceramic slurry based on the image information and transmits the size information to the coating component.

[0010] Optionally, the monitoring component further includes a support frame, on which the CCD camera is mounted, with the lens of the CCD camera facing the edge area, and the CCD camera connected to the image processing unit via a data cable.

[0011] Optionally, the drying assembly includes an oven and a heater disposed within the oven for heating the interior of the oven.

[0012] Optionally, the drying assembly further includes a temperature sensor and a data acquisition and control module connected to the heater and the temperature sensor respectively. The temperature sensor acquires temperature information inside the oven in real time. The data acquisition and control module receives the temperature information and compares the temperature information with a preset threshold to adjust the heating power of the heater, wherein the preset threshold ranges from 60°C to 100°C.

[0013] According to another aspect of the present invention, the present invention also provides an electrode fabrication system, including the aforementioned ceramic edge coating device for improving the virtual edge.

[0014] According to another aspect of the present invention, the present invention also provides a battery production line, including the aforementioned electrode sheet making system.

[0015] Beneficial effects:

[0016] This invention provides a ceramic edge coating device for improving the appearance of ceramic edges. A coating component, a monitoring component, and a drying component are arranged sequentially along the travel direction of the current collector. The coating component applies ceramic slurry to the edge region of the current collector to form a ceramic edge. The monitoring component is connected to the coating component and acquires the size information of the ceramic slurry applied to the edge region in real time, transmitting this information to the coating component. The coating component dynamically adjusts the ceramic slurry flow rate of the nozzle based on the size information. The drying component dries the edge region coated with ceramic slurry. In this way, the monitoring component detects the ceramic edge size data in real time, feeds the data back to the coating component, and adjusts the ceramic slurry flow rate of the nozzle, dynamically matching the amount of ceramic slurry applied with the desired target value. This achieves a dynamic matching relationship between the amount of ceramic slurry applied and the travel speed of the current collector, ensuring that an appropriate amount of ceramic slurry is applied to the edge region. Before the cathode slurry coating process, the current collector coated with ceramic slurry is first dried in a drying assembly. This forms a physical isolation layer on the edge area, preventing the diffusion of the ceramic slurry if it is not completely dry. This avoids edge blurring caused by ceramic slurry diffusion, so when the current collector enters the subsequent cathode slurry coating stage, the solidified ceramic edge effectively blocks the penetration of the cathode slurry into the edge area, thus eliminating the edge blurring defects caused by the mixing of the two slurries. This achieves the technical effect of avoiding edge blurring defects in the cathode sheet and improving the yield rate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a ceramic edge coating device for improving virtual edges, provided as an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the nozzle structure in a ceramic edge coating device for improving virtual edges, provided as an embodiment of the present invention.

[0020] Figure 3 This is a structural block diagram of a monitoring component in a ceramic edge coating device for improving virtual edges, provided as an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the drying component in a ceramic edge coating device for improving virtual edges, provided as an embodiment of the present invention.

[0022] Figure 5This is a structural block diagram of a temperature sensor and acquisition control module in a ceramic edge coating device for improving virtual edges, provided as an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the current collector in a ceramic edge coating device for improving virtual edges, provided as an embodiment of the present invention. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the embodiments of this application, "at least one" refers to one or more; "multiple" refers to two or more. In the description of this application, the terms "first," "second," "third," etc., are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0027] In this specification, references such as "one embodiment" or "some embodiments" mean that one or more embodiments of this application include the specific features, structures, or characteristics described in connection with that embodiment. Therefore, the terms "comprising," "including," "having," and variations thereof in this specification all mean "including but not limited to," unless otherwise specifically emphasized. It should be noted that in the embodiments of this application, "and / or" describes 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.

[0028] It should be noted that, in the embodiments of this utility model, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component. Furthermore, in the embodiments of this application, "connection" can also be understood as an electrical connection; the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components. The terms "vertical," "horizontal," "left," "right," and similar expressions used in the embodiments of this utility model are for illustrative purposes only and are not intended to limit the utility model.

[0029] This utility model provides a ceramic edge coating device for improving the appearance of fuzzy edges in Embodiment 1. Please refer to [link to related documentation]. Figures 1 to 6 As shown, Figure 1 This is a schematic diagram of the structure of a ceramic edge coating device for improving virtual edges provided in an embodiment of this utility model. Figure 2 This is a schematic diagram of the nozzle structure in a ceramic edge coating device for improving virtual edges provided by an embodiment of the present invention. Figure 3 This is a structural block diagram of a monitoring component in a ceramic edge coating device for improving virtual edges, provided by an embodiment of this utility model. Figure 4 This is a schematic diagram of the drying component in a ceramic edge coating device for improving virtual edges, provided by an embodiment of this utility model. Figure 5 This is a structural block diagram of a temperature sensor and acquisition control module in a ceramic edge coating device for improving virtual edges, provided by an embodiment of this utility model. Figure 6 This is a schematic diagram of the current collector in a ceramic edge coating device for improving virtual edges provided by an embodiment of the present invention. The ceramic edge coating device for improving virtual edges provided by this embodiment of the present invention includes a coating component 1, a monitoring component 2, and a drying component 3. The coating component 1, monitoring component 2, and drying component 3 are arranged sequentially along the travel direction of the current collector 7. The coating component 1 is used to individually coat ceramic slurry onto the edge region 71 of the current collector 7 to form a ceramic edge. The monitoring component 2 is connected to the coating component 1 and is used to acquire the size information of the ceramic slurry coated on the edge region 71 in real time and transmit the size information to the coating component 1. The coating component 1 dynamically adjusts the ceramic slurry flow rate of the nozzle 13 according to the size information. The drying component 3 is used to dry the edge region 71 coated with ceramic slurry.

[0030] Among them, the edge region 71 of the current collector 7 refers to, for example, Figure 6The area near the left and right edges of the current collector 7 shown in the diagram is used to coat the ceramic slurry.

[0031] Among them, such as Figure 6 As shown, the size information of the ceramic slurry refers to the width of the ceramic slurry coated on the edge region 71 in the left and right horizontal direction along the left and right direction of the current collector 7.

[0032] The nozzle 13 can be connected to the feed pump, which provides ceramic slurry to the nozzle 13. The nozzle 13 can adopt a non-contact spiral atomization setting. There can also be a two-stage filtration device between the feed pump and the nozzle 13 to filter the ceramic slurry and prevent slurry particles from clogging the nozzle 13.

[0033] In this embodiment, a coating component 1, a monitoring component 2, and a drying component 3 are arranged sequentially along the travel direction of the current collector 7. The coating component 1 is used to individually coat the ceramic slurry onto the edge region 71 of the current collector 7 to form a ceramic edge. The monitoring component 2 is connected to the coating component 1 and is used to acquire the size information of the ceramic slurry coated on the edge region 71 in real time and transmit the size information to the coating component 1. The coating component 1 dynamically adjusts the ceramic slurry flow rate of the nozzle 13 according to the size information. The drying component 3 is used to dry the edge region 71 coated with ceramic slurry. In this way, the monitoring component 2 detects the ceramic edge size information data in real time, feeds the size information data back to the coating component 1, and adjusts the ceramic slurry flow rate of the nozzle 13 so that the amount of ceramic slurry coated is dynamically matched with the target value to be met. This achieves a dynamic matching relationship between the amount of ceramic slurry coated and the travel speed of the current collector 7, realizing the coating of an appropriate amount of ceramic slurry on the edge region 71. Before the positive electrode slurry coating process, the current collector 7 coated with ceramic slurry is first dried in the drying assembly 3. This forms a physical isolation layer on the edge region 71, preventing the diffusion of the ceramic slurry if it is not completely dry. This avoids edge blurring caused by ceramic slurry diffusion, so that when the current collector 7 enters the subsequent positive electrode slurry coating station, the solidified ceramic edge can effectively block the penetration of the positive electrode slurry into the edge region 71, thus eliminating the edge blurring defects caused by the mixing of the two slurries. This achieves the technical effect of avoiding edge blurring defects in the positive electrode sheet and improving the yield.

[0034] As one implementation, the ceramic edge coating device for improving the virtual edge provided in Embodiment 1 of this utility model further includes an unwinding assembly 4, a roller conveyor assembly 5, and a coating machine. The unwinding assembly 4 is used to release the current collector 7, and the roller conveyor assembly 5 guides the current collector 7 from the unwinding assembly 4 through the roller conveyor assembly 5 into the coating machine. The coating machine is used to coat the dried current collector 7 with the positive electrode slurry. Those skilled in the art will understand that the specific structure of the unwinding assembly 4 and the coating machine in the ceramic edge coating device for improving the virtual edge provided in Embodiment 1 of this utility model is not limited; it is only necessary to realize that the current collector 7 is released through the unwinding assembly 4, and the coating machine coats the dried current collector 7 with the positive electrode slurry. The constant tension of the unwinding assembly 4 can make the current collector 7 move smoothly, avoiding uneven coating thickness of the ceramic edge due to sudden tension changes. The chrome-plated steel roller of the roller conveyor assembly 5 can reduce the transmission friction of the current collector 7 through mirror treatment. The coating machine coats the ceramic edge with the positive electrode slurry after the ceramic edge is dried. At this time, a solidified isolation layer has been formed on the ceramic edge, which can effectively prevent the subsequent positive electrode slurry from penetrating into the edge area 71.

[0035] In one embodiment, the coating assembly 1 includes a driver, a lead screw, and a nozzle 13. The lead screw is connected to the driver, and the nozzle 13 is threadedly connected to the lead screw. The driver drives the lead screw to move the nozzle 13 along a direction perpendicular to the current collector 7, so that the projection of the nozzle 13 onto the edge region 71 in a direction close to the edge region 71 covers the edge region 71. That is, the projection of the nozzle 13 onto the edge region 71 in a direction close to the edge region 71 is located on the edge region 71. The nozzle 13 is configured to coat the ceramic slurry onto the edge region 71. A flow regulation mechanism is connected to the nozzle 13 and to the monitoring assembly 2. The flow regulation mechanism is used to adjust the flow rate of the nozzle 13. There can be multiple nozzles 13. The driver may include a cylinder or a motor. Those skilled in the art will understand that in the ceramic edge coating device for improving the virtual edge provided in Embodiment 1 of this utility model, there are no restrictions on the specific structure of the lead screw and the nozzle 13. It is only necessary to connect the lead screw and the nozzle 13 by thread, such as connecting the outer shell of the nozzle 13 and the lead screw to each other by thread, connecting the lead screw to the shaft of the motor, rotating the shaft of the motor to drive the lead screw to rotate, and the rotating lead screw to drive the nozzle 13 to move.

[0036] In one implementation, the flow adjustment mechanism includes a flow control knob 141 and a stepper motor. The stepper motor is connected to the flow control knob 141. After receiving dimensional information, the stepper motor drives the flow control knob 141 to adjust the size of the nozzle 13's opening cross-sectional area. Those skilled in the art will understand that the specific structure of the flow control knob 141 and the stepper motor in the ceramic edge coating device for improving virtual edges provided in Embodiment 1 of this utility model is not limited. It is sufficient that the stepper motor drives the flow control knob 141 to rotate, and the rotating flow control knob 141 can adjust the size of the nozzle 13's opening cross-sectional area. For example, the stepper motor can drive the flow control knob 141 through a planetary reducer. The flow control knob 141 and the nozzle 13 valve body are connected by a trapezoidal thread to achieve stepless adjustment of the nozzle 13's opening cross-sectional area. That is, the stepper motor can close the nozzle 13 opening by pushing the flow control knob 141, or it can open the nozzle 13 opening by pushing the flow control knob 141.

[0037] In one implementation, the monitoring component 2 includes a CCD camera 21 and an image processing unit 22. The CCD camera 21 acquires image information of the ceramic slurry coated on the edge region 71 in real time. The image processing unit 22 generates the size information of the ceramic slurry based on the image information and transmits the size information to the coating component 1. The image processing unit 22 can use a preset algorithm to extract the ceramic edge contour through edge detection technology and calculate the size information of the ceramic slurry, i.e., the width parameter of the ceramic slurry.

[0038] In one implementation, the monitoring component 2 also includes a support frame, which can be a carbon fiber support frame. A CCD camera 21 is mounted on the support frame, with its lens facing the edge region 71. The CCD camera 21 is connected to the image processing unit 22 via a data cable. Those skilled in the art will understand that the specific structure of the support frame in the ceramic edge coating device for improving virtual edges provided in Embodiment 1 of this utility model is not limited; it is only necessary to ensure that the support frame provides support for the CCD camera 21, allowing the lens of the CCD camera 21 located on the support frame to face the edge region 71.

[0039] In one embodiment, the drying assembly 3 includes an oven 31 and a heater 32. The heater 32 is disposed inside the oven 31 and is used to heat the interior of the oven 31. The heater 32 may include three sets of infrared radiation heating tubes.

[0040] In one implementation, the drying assembly 3 also includes a temperature sensor 33 and a data acquisition and control module 34. The temperature sensor 33 collects temperature information inside the oven 31 in real time. The data acquisition and control module 34 is connected to both the heater 32 and the temperature sensor 33. The data acquisition and control module 34 receives the temperature information and compares it with a preset threshold to adjust the heating power of the heater 32. The preset threshold ranges from 60°C to 100°C. For example, assuming the preset threshold is 80°C, when the temperature inside the oven 31 collected by the temperature sensor 33 is 70°C, the data acquisition and control module 34 can control all three sets of infrared radiation heating tubes to turn on, and the three sets of infrared radiation heating tubes will heat simultaneously to increase the temperature inside the oven 31. When the temperature inside the oven 31 collected by the temperature sensor 33 is 90°C, the data acquisition and control module 34 can control all three sets of infrared radiation heating tubes to turn off, and the three sets of infrared radiation heating tubes will stop heating simultaneously to decrease the temperature inside the oven 31.

[0041] To provide a detailed description of the electrode fabrication system provided by this utility model, the above embodiment 1 provides a detailed description of a ceramic edge coating device for improving virtual edges. Based on the same utility model concept, this application also provides an electrode fabrication system, as detailed in embodiment 2.

[0042] Embodiment 2 of this utility model provides an electrode sheet preparation system, including the above-mentioned ceramic edge coating device for improving the virtual edge.

[0043] This invention provides an electrode fabrication system. A coating component 1, a monitoring component 2, and a drying component 3 are sequentially arranged along the travel direction of a current collector 7. The coating component 1 coats ceramic slurry onto the edge region 71 of the current collector 7 to form a ceramic edge. The monitoring component 2 is connected to the coating component 1 and acquires the size information of the ceramic slurry coated on the edge region 71 in real time, transmitting this information to the coating component 1. The coating component 1 dynamically adjusts the ceramic slurry flow rate of the nozzle 13 based on the size information. The drying component 3 dries the edge region 71 coated with ceramic slurry. In this way, the monitoring component 2 detects the ceramic edge size information data in real time, feeds the data back to the coating component 1, and adjusts the ceramic slurry flow rate of the nozzle 13, dynamically matching the ceramic slurry coating amount with the desired target value. This achieves a dynamic matching relationship between the ceramic slurry coating amount and the travel speed of the current collector 7, ensuring that an appropriate amount of ceramic slurry is coated on the edge region 71. Before the positive electrode slurry coating process, the current collector 7 coated with ceramic slurry is first dried in the drying assembly 3. This forms a physical isolation layer on the edge region 71, preventing the diffusion of the ceramic slurry if it is not completely dry. This avoids edge blurring caused by ceramic slurry diffusion, so that when the current collector 7 enters the subsequent positive electrode slurry coating station, the solidified ceramic edge can effectively block the penetration of the positive electrode slurry into the edge region 71, thus eliminating the edge blurring defects caused by the mixing of the two slurries. This achieves the technical effect of avoiding edge blurring defects in the positive electrode sheet and improving the yield.

[0044] To provide a detailed description of the battery production line provided by this utility model, the above embodiment 1 provides a detailed description of a ceramic edge coating device for improving virtual edges. Based on the same utility model concept, this application also provides a battery production line, as detailed in embodiment 3.

[0045] Embodiment 3 of this utility model provides a battery production line, including the above-mentioned electrode sheet making system.

[0046] This invention provides a battery production line. A coating component 1, a monitoring component 2, and a drying component 3 are sequentially arranged along the travel direction of the current collector 7. The coating component 1 is used to individually coat ceramic slurry onto the edge region 71 of the current collector 7 to form a ceramic edge. The monitoring component 2 is connected to the coating component 1 and is used to acquire the size information of the ceramic slurry coated on the edge region 71 in real time and transmit the size information to the coating component 1. The coating component 1 dynamically adjusts the ceramic slurry flow rate of the nozzle 13 according to the size information. The drying component 3 is used to dry the edge region 71 coated with ceramic slurry. In this way, the monitoring component 2 detects the ceramic edge size information data in real time, feeds the size information data back to the coating component 1, and adjusts the ceramic slurry flow rate of the nozzle 13, so that the ceramic slurry coating amount dynamically matches the desired target value. This achieves a dynamic matching relationship between the ceramic slurry coating amount and the travel speed of the current collector 7, realizing the coating of an appropriate amount of ceramic slurry on the edge region 71. Before the positive electrode slurry coating process, the current collector 7 coated with ceramic slurry is first dried in the drying assembly 3. This forms a physical isolation layer on the edge region 71, preventing the diffusion of the ceramic slurry if it is not completely dry. This avoids edge blurring caused by ceramic slurry diffusion, so that when the current collector 7 enters the subsequent positive electrode slurry coating station, the solidified ceramic edge can effectively block the penetration of the positive electrode slurry into the edge region 71, thus eliminating the edge blurring defects caused by the mixing of the two slurries. This achieves the technical effect of avoiding edge blurring defects in the positive electrode sheet and improving the yield.

[0047] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A ceramic edge coating device for improving virtual edges, characterized in that, The ceramic edge coating device includes a coating component, a monitoring component, and a drying component arranged sequentially along the travel direction of the collector. The coating component is used to coat ceramic slurry separately onto the edge area of ​​the collector to form a ceramic edge. The monitoring component is connected to the coating component and is used to acquire the size information of the ceramic slurry coated on the edge area in real time and transmit the size information to the coating component. The coating component dynamically adjusts the ceramic slurry flow rate of the nozzle according to the size information. The drying component is used to dry the edge area coated with the ceramic slurry.

2. The ceramic edge coating apparatus for improving virtual edges according to claim 1, characterized in that, The ceramic edge coating device further includes an unwinding assembly, a roller conveying assembly, and a coating machine. The unwinding assembly is used to release the current collector. The roller conveying assembly guides the current collector from the unwinding assembly through the roller conveying assembly into the coating machine. The coating machine is used to coat the dried current collector with a positive electrode slurry.

3. The ceramic edge coating apparatus for improving virtual edges according to claim 1, characterized in that, The coating assembly includes a driver, a lead screw connected to the driver, a nozzle threadedly connected to the lead screw, and a flow regulating mechanism connected to the nozzle. The driver drives the lead screw to move the nozzle along a direction perpendicular to the current collector, so that the nozzle's projection onto the edge region along a direction close to the edge region covers the edge region. The nozzle is configured to coat the edge region with ceramic slurry. The flow regulating mechanism is connected to the monitoring assembly and is used to regulate the flow rate of the nozzle.

4. The ceramic edge coating apparatus for improving virtual edges according to claim 3, characterized in that, The flow adjustment mechanism includes a flow control knob and a stepper motor connected to the flow control knob. After receiving the size information, the stepper motor drives the flow control knob to adjust the size of the nozzle opening cross-sectional area.

5. The ceramic edge coating apparatus for improving virtual edges according to claim 1, characterized in that, The monitoring component includes a CCD camera and an image processing unit. The CCD camera acquires image information of the ceramic slurry coated on the edge area in real time. The image processing unit generates size information of the ceramic slurry based on the image information and transmits the size information to the coating component.

6. The ceramic edge coating apparatus for improving virtual edges according to claim 5, characterized in that, The monitoring component also includes a support frame, on which the CCD camera is mounted. The lens of the CCD camera faces the edge area, and the CCD camera is connected to the image processing unit via a data cable.

7. The ceramic edge coating apparatus for improving virtual edges according to claim 1, characterized in that, The drying assembly includes an oven and a heater disposed inside the oven, the heater being used to heat the interior of the oven.

8. The ceramic edge coating apparatus for improving virtual edges according to claim 7, characterized in that, The drying assembly also includes a temperature sensor and a data acquisition and control module connected to the heater and the temperature sensor respectively. The temperature sensor acquires the temperature information inside the oven in real time. The data acquisition and control module receives the temperature information and compares the temperature information with a preset threshold to adjust the heating power of the heater. The preset threshold ranges from 60°C to 100°C.

9. An electrode preparation system, characterized in that, The ceramic edge coating apparatus for improving virtual edges includes any one of claims 1 to 8.

10. A battery production line, characterized in that, Includes the electrode fabrication system as described in claim 9.

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