Drying oven device and coating equipment

Abstract

The embodiment of the utility model provides a drying oven device and coating equipment, and relates to the technical field of battery pole piece drying. The drying oven device comprises a drying oven air nozzle assembly, an ultrasonic sensor assembly and an air valve opening adjusting valve assembly. The drying oven air nozzle assembly comprises a first drying oven air nozzle and a second drying oven air nozzle which are correspondingly arranged, an air nozzle opening of the first drying oven air nozzle faces the first direction, and an air nozzle opening of the second drying oven air nozzle faces the second direction; the ultrasonic sensor assembly comprises a first ultrasonic sensor and a second ultrasonic sensor, the first ultrasonic sensor is arranged at a tuyere of the first drying oven tuyere, and the second ultrasonic sensor is arranged at a tuyere of the second drying oven tuyere; the air valve opening adjusting valve assembly comprises a first opening adjusting valve and a second opening adjusting valve, the first opening adjusting valve is connected with the first drying oven air nozzle and the first ultrasonic sensor, and the second opening adjusting valve is connected with the second drying oven air nozzle and the second ultrasonic sensor.

Description

Technical Field

[0001] The present application relates to the technical field of battery pole piece drying, and in particular to an oven device and a coating device. Background Art

[0002] At present, lithium-ion batteries have the advantages of higher energy density, low self-discharge, and long cycle life compared to lead-acid batteries, nickel-metal hydride batteries, and nickel-cadmium batteries. They are currently widely used in the field of consumer electronics. As the core working component of lithium-ion batteries, the performance of battery pole pieces determines the performance of lithium-ion batteries. The preparation process of lithium-ion battery pole pieces is generally as follows: the positive / negative electrode active materials, conductive agents, binders, and solvents are mixed evenly in a certain proportion to prepare a slurry, and then the slurry is coated on the current collector, heated to evaporate the solvent to obtain a dry pole piece, and then the dry pole piece is rolled and cut to a certain size to make an electrode.

[0003] Generally, the drying process of the electrode often involves the heat and mass transfer process inside the electrode and the heat and mass transfer process between the electrode and the drying medium, which has a very important impact on the performance of the electrode. In the current technical solution, the state of the diaphragm in the oven is generally confirmed manually through a visual window; however, the manual confirmation of the state of the diaphragm in the oven can only be confirmed during a single debugging, or the personnel strengthen the multiple inspections and confirmations, but there is no monitoring in the process, which is easy to produce batch scrapping nozzles in the process, resulting in batch scrapping of the electrode, which seriously affects the production efficiency of the electrode. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an oven device and a coating device, which can achieve the technical effect of improving the production efficiency of pole pieces.

[0005] In a first aspect, an embodiment of the present application provides an oven device, including an oven air nozzle assembly, an ultrasonic sensor assembly, and an air valve opening regulating valve assembly;

[0006] The oven air nozzle assembly comprises a first oven air nozzle and a second oven air nozzle which are arranged correspondingly, wherein the air nozzle opening of the first oven air nozzle faces a first direction, and the air nozzle opening of the second oven air nozzle faces a second direction;

[0007] The ultrasonic sensor assembly includes a first ultrasonic sensor and a second ultrasonic sensor, wherein the first ultrasonic sensor is disposed at the air nozzle of the first oven air nozzle, and the second ultrasonic sensor is disposed at the air nozzle of the second oven air nozzle;

[0008] The air valve opening regulating valve assembly includes a first opening regulating valve and a second opening regulating valve, the first opening regulating valve is respectively connected to the first oven air nozzle and the first ultrasonic sensor, and the second opening regulating valve is respectively connected to the second oven air nozzle and the second ultrasonic sensor.

[0009] In the above implementation process, when the wet film electrode enters the internal wind field of the oven formed by the first oven air nozzle and the second oven air nozzle through the oven opening, the first ultrasonic sensor and the second ultrasonic sensor can link the first oven air nozzle and the second oven air nozzle to position the wet film electrode, and according to the position state of the electrode in the internal wind field of the oven, the air valve opening of the first oven air nozzle is adjusted by the first opening regulating valve, and the air valve opening of the second oven air nozzle is adjusted by the second opening regulating valve, so that the electrode is floated away from the oven air nozzle, which effectively improves the state of the electrode, prevents the electrode from contacting the surface of the air nozzle, and avoids the phenomenon of abnormal dot-like pits in the appearance of the electrode; thereby, the oven device can avoid the situation where the electrode is scraped by the air nozzle in batches, thereby achieving the technical effect of improving the production efficiency of the electrode.

[0010] Furthermore, the first oven air nozzle is provided with a first air nozzle cavity, and the first ultrasonic sensor is nested inside the first air nozzle cavity.

[0011] In the above implementation process, the first oven nozzle is provided with a first nozzle cavity, and the first ultrasonic sensor is embedded in the first nozzle cavity, so that the position of the pole piece can be accurately located by the first ultrasonic sensor, and the distance between the pole piece and the first oven nozzle can be detected.

[0012] Furthermore, the second oven air nozzle is provided with a second air nozzle cavity, and the second ultrasonic sensor is nested inside the second air nozzle cavity.

[0013] In the above implementation process, the second oven nozzle is provided with a second nozzle cavity, and the second ultrasonic sensor is embedded in the second nozzle cavity, so that the position of the pole piece can be accurately located by the second ultrasonic sensor, and the distance between the pole piece and the second oven nozzle can be detected.

[0014] Furthermore, the first oven air nozzle and the second oven air nozzle are staggered.

[0015] In the above implementation process, the first oven air nozzle and the second oven air nozzle are staggered to facilitate the continuous passage of the pole piece through the internal wind field of the oven.

[0016] Furthermore, the oven device also includes a photoelectric sensor, and the photoelectric sensor is arranged at the first oven air nozzle or the second oven air nozzle.

[0017] In the above implementation process, the photoelectric sensor can be used to immediately stop the machine after continuously sensing that the pole piece is scratching near the air nozzle, thereby effectively avoiding the situation where the air nozzle is scratched.

[0018] Furthermore, the first ultrasonic sensor and the second ultrasonic sensor are I-shaped ultrasonic sensors.

[0019] In the above implementation process, the I-shaped ultrasonic sensor can perform dual sensing in the horizontal and vertical directions to ensure that the electrode is accurately positioned in the oven, avoiding the situation where both sides of the electrode are qualified but the middle film area is unqualified.

[0020] Furthermore, a diaphragm channel is provided between the first oven air nozzle and the second oven air nozzle.

[0021] In the above implementation process, there is a certain height difference between the first oven air nozzle and the second oven air nozzle, thereby forming a diaphragm channel to facilitate the electrode to pass through the internal wind field of the oven.

[0022] Furthermore, the I-shaped ultrasonic sensor is arranged at a first sensing end and a second sensing end, the first sensing end is arranged at both sides of the first oven air nozzle and the second oven air nozzle, and the second sensing end is arranged at a middle position between the first oven air nozzle and the second oven air nozzle.

[0023] In a second aspect, an embodiment of the present application provides a coating device, comprising at least one oven device as described in any one of the first aspect.

[0024] Furthermore, the coating device also includes a roller device, and the roller device includes a first roller mechanism and a second roller mechanism, and the first roller mechanism and the second roller mechanism are respectively arranged at both ends of the inlet and outlet of the oven device.

[0025] Other features and advantages disclosed in the present application will be described in the following description, or some features and advantages can be inferred or determined without doubt from the description, or can be learned by implementing the above-mentioned technology disclosed in the present application.

[0026] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A structural front view of a drying oven device provided in an embodiment of the present application;

[0029] Figure 2 A top view of the structure of the first oven air nozzle provided in an embodiment of the present application;

[0030] Figure 3 A structural side view of the oven device provided in an embodiment of the present application;

[0031] Figure 4 A schematic diagram of the structure of the coating equipment provided in an embodiment of the present application.

[0032] Figure numerals: oven air nozzle assembly 100; first oven air nozzle 110; second oven air nozzle 120; ultrasonic sensor assembly 200; first ultrasonic sensor 210; second ultrasonic sensor 220; air valve opening regulating valve assembly 300; first opening regulating valve 310; second opening regulating valve 320; pole piece 400; over-roll device 500; first over-roll mechanism 510; second over-roll mechanism 520. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0034] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0035] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0036] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0038] Generally, in the drying process of the electrode (membrane), the state of the electrode in the oven is manually confirmed through the visual window; however, the state of the membrane in the oven can only be confirmed during a single commissioning, or the personnel can strengthen the inspection and confirmation multiple times, but there is no monitoring during the drying process, which is easy to produce batch scrapping nozzles in the process, resulting in batch scrapping of the electrode, which seriously affects the production efficiency of the electrode;

[0039] In order to solve the above-mentioned technical problems, the present application provides an oven device and a coating device; see Figures 1 to 3 , Figure 1 This is a structural front view of the oven device provided in the embodiment of the present application. Figure 2 A top view of the structure of the first oven air nozzle provided in an embodiment of the present application, Figure 3 A structural side view of an oven device provided in an embodiment of the present application; the oven device comprises an oven air nozzle assembly 100, an ultrasonic sensor assembly 200 and an air valve opening regulating valve assembly 300;

[0040] Exemplarily, the oven air nozzle assembly 100 includes a first oven air nozzle 110 and a second oven air nozzle 120 that are arranged correspondingly, wherein the air nozzle opening of the first oven air nozzle 110 faces the first direction, and the air nozzle opening of the second oven air nozzle 120 faces the second direction;

[0041] Exemplarily, the openings of the first oven air nozzle 110 and the second oven air nozzle 120 are oriented in different directions, for example, one air nozzle opens upward and the other air nozzle opens downward; wherein an internal wind field of the oven is formed between the first oven air nozzle 110 and the second oven air nozzle 120.

[0042] Exemplarily, the ultrasonic sensor assembly 200 includes a first ultrasonic sensor 210 and a second ultrasonic sensor 220, wherein the first ultrasonic sensor 210 is disposed at the nozzle of the first oven nozzle 110, and the second ultrasonic sensor 220 is disposed at the nozzle of the second oven nozzle 120;

[0043] Exemplarily, the first ultrasonic sensor 210 and the second ultrasonic sensor 220 can detect the distance between the pole piece 400 and the first oven tuyere 110 and the second oven tuyere 120 when the pole piece 400 passes through the internal wind field of the oven.

[0044] Exemplarily, the air valve opening regulating valve assembly 300 includes a first opening regulating valve 310 and a second opening regulating valve 320, the first opening regulating valve 310 is respectively connected to the first oven air nozzle 110 and the first ultrasonic sensor 210, and the second opening regulating valve 320 is respectively connected to the second oven air nozzle 120 and the second ultrasonic sensor 220.

[0045] Exemplarily, the first opening regulating valve 310 is used to control the opening of the air valve of the first oven air nozzle 110, and the first opening regulating valve 310 is linked with the first ultrasonic sensor 210, and the opening of the air valve of the first oven air nozzle 110 is automatically adjusted according to the distance information fed back by the first ultrasonic sensor 210; similarly, the second opening regulating valve 320 is used to control the opening of the air valve of the second oven air nozzle 120, and the second opening regulating valve 320 is linked with the second ultrasonic sensor 220, and the opening of the air valve of the second oven air nozzle 120 is automatically adjusted according to the distance information fed back by the second ultrasonic sensor 220;

[0046] In some embodiments, when the wet film electrode 400 enters the internal wind field of the oven formed by the first oven nozzle 110 and the second oven nozzle 120 through the oven opening, the first ultrasonic sensor 210 and the second ultrasonic sensor 220 can link the first oven nozzle 110 and the second oven nozzle 120 to position the wet film electrode 400. According to the position state of the electrode 400 in the internal wind field of the oven, the air valve opening of the first oven nozzle 110 is adjusted by the first opening regulating valve 310, and the air valve opening of the second oven nozzle 120 is adjusted by the second opening regulating valve 320, so that the electrode 400 floats away from the oven nozzle, effectively improving the electrode state, preventing the electrode 400 from contacting the nozzle surface, and avoiding the generation of abnormal dot-like pits in the appearance of the electrode; thereby, the oven device can avoid the occurrence of batch scraping of the electrode by the nozzle, thereby achieving the technical effect of improving the production efficiency of the electrode.

[0047] Exemplarily, the first oven air nozzle 110 is provided with a first air nozzle cavity, and the first ultrasonic sensor 210 is nested inside the first air nozzle cavity.

[0048] Exemplarily, the first oven nozzle 110 is provided with a first nozzle cavity, and the first ultrasonic sensor 210 is embedded in the first nozzle cavity, so that the position of the pole piece 400 can be accurately located by the first ultrasonic sensor 210, and the distance between the pole piece 400 and the first oven nozzle 110 can be detected.

[0049] Exemplarily, the second oven air nozzle 120 is provided with a second air nozzle cavity, and the second ultrasonic sensor 220 is nested inside the second air nozzle cavity.

[0050] Exemplarily, the second oven nozzle 120 is provided with a second nozzle cavity, and the second ultrasonic sensor 220 is embedded in the second nozzle cavity, so that the position of the pole piece 400 can be accurately located by the second ultrasonic sensor 220, and the distance between the pole piece 400 and the second oven nozzle 120 can be detected.

[0051] Exemplarily, the first oven tuyere 110 and the second oven tuyere 120 are staggered.

[0052] Exemplarily, by staggering the first oven air nozzle 110 and the second oven air nozzle 120 , it is convenient for the pole piece 400 to continuously pass through the wind field inside the oven.

[0053] Exemplarily, the oven device further includes a photoelectric sensor, which is disposed at the first oven air nozzle or the second oven air nozzle.

[0054] For example, through the photoelectric sensor, the machine can be shut down immediately after continuously sensing that the pole piece 400 is scraping near the air nozzle, thereby effectively avoiding the situation where the air nozzle is scratched.

[0055] Exemplarily, the first ultrasonic sensor 210 and the second ultrasonic sensor 220 are I-shaped ultrasonic sensors.

[0056] For example, the I-shaped ultrasonic sensor can perform dual sensing in the horizontal and vertical directions to ensure that the electrode piece is accurately positioned in the oven, thereby avoiding the situation where both sides of the electrode piece are qualified but the middle film area is unqualified.

[0057] Optionally, an I-shaped ultrasonic sensor, that is, an ultrasonic sensor adopts an “I”-shaped opposing structure in the horizontal direction.

[0058] Exemplarily, a membrane channel is provided between the first oven air nozzle 110 and the second oven air nozzle 120 .

[0059] Exemplarily, there is a certain height difference between the first oven air nozzle 110 and the second oven air nozzle 120, thereby forming a membrane channel to facilitate the pole piece 400 to pass through the internal wind field of the oven.

[0060] Exemplarily, the I-shaped ultrasonic sensor is arranged at a first sensing end and a second sensing end, the first sensing end is arranged at both sides of the first oven air nozzle 110 and the second oven air nozzle 120, and the second sensing end is arranged at a middle position between the first oven air nozzle 110 and the second oven air nozzle 120.

[0061] See also Figure 4 , Figure 4 A schematic diagram of the structure of a coating device provided in an embodiment of the present application, the coating device includes at least one oven device and a roller device 500;

[0062] Exemplarily, the roller device 500 includes a first roller mechanism 510 and a second roller mechanism 520, and the first roller mechanism 510 and the second roller mechanism 520 are respectively arranged at both ends of the inlet and outlet of the oven device.

[0063] Exemplarily, when the coating equipment includes a plurality of oven devices, the plurality of oven devices are arranged side by side, and the first roller mechanism 510 and the second roller mechanism 520 are respectively arranged at both ends of the inlet and outlet of the plurality of oven devices.

[0064] Illustratively, an oven device and coating equipment provided in an embodiment of the present application can improve the design of an oven nozzle with controllable pole piece suspension state, and eliminate abnormalities in the blowing nozzle during batch coating; wherein, an ultrasonic sensor assembly is arranged in the oven nozzle assembly, and an I-shaped ultrasonic sensor runs through the oven nozzle; in addition, an air valve opening regulating valve assembly is respectively connected to the ultrasonic sensor assembly and the oven nozzle assembly, so as to realize real-time automatic adjustment of the oven air valve opening; thus, during the debugging and startup process of the oven device and coating equipment provided in an embodiment of the present application, the ultrasonic sensor can continue to work, real-time locate the state of the pole piece inside the nozzle, and quantitatively adjust the air valve according to the state of the pole piece close to the nozzle, so as to reduce the situation of blowing nozzles of batch pole pieces.

[0065] In some implementation scenarios, combined with Figures 1 to 4 The specific system structure and function implementation of the oven device and coating equipment provided in the embodiments of the present application are described as follows:

[0066] During normal coating debugging, due to the adjustment of the air valve opening size / change of wind frequency, the overall wind field inside the oven changes, and the pole piece may even be scraped off in the oven, thereby reducing the coating quality rate; during the process, due to inconsistent tension of the internal pole piece, the wet film shakes, rubs against or overlaps the upper and lower air nozzles, resulting in poor appearance of batch pole pieces;

[0067] In view of the above problems, the oven device and coating equipment are an oven nozzle design that improves the controllable suspension state of the pole piece. An I-shaped ultrasonic sensor is embedded in the nozzle, and the ultrasonic sensor automatically adjusts the air valve opening;

[0068] The wet film electrode enters the wind field inside the oven through the oven port, and the electrode passes above the oven air nozzle. At this time, the air nozzle ultrasonic sensor reads the display distance of the electrode in the oven. When the display distance of the electrode in the oven is less than 1cm, due to the continuous movement of the film in the oven, the vibration of the wet film electrode will approach the upper hull, and will scratch the surface of the coating area to form a very fine scraping nozzle morphology, or scratch the film, which may seriously cause the belt to break and affect the coating quality rate. Synchronize the edge of the air nozzle in the longitudinal direction to confirm whether the entire film is attached to the air nozzle, causing it to be scrapped;

[0069] The oven air nozzle assembly provided in the embodiment of the present application has an I-shaped ultrasonic sensor embedded in the air nozzle cavity. The ultrasonic sensor can accurately locate the edge position of the diaphragm and link the air valve for adjustment. The edge vertical ultrasonic sensor can confirm whether the diaphragm as a whole is in contact with the air nozzle. The two can work simultaneously or independently.

[0070] The air nozzle structure provided in the embodiment of the present application can use an ultrasonic sensor to link with the air valve to position the electrode during coating. The air valve opening is adjusted in the oven according to the position state to make the electrode float away from the air nozzle of the oven, thereby effectively improving the state of the electrode and preventing the electrode from contacting the surface of the air nozzle and causing abnormal dot-like pits on the appearance of the electrode. The opposing edge photoelectric sensor will stop immediately after continuously sensing that the diaphragm is scratched near the air nozzle, thereby effectively avoiding the situation where the air nozzle is scratched.

[0071] In all the embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms are not elaborated in the embodiments of the present application.

[0072] It should be understood that the "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0073] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0074] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A drying oven device, characterized in that: It includes an oven air nozzle assembly, an ultrasonic sensor assembly and an air valve opening regulating valve assembly; The oven air nozzle assembly comprises a first oven air nozzle and a second oven air nozzle which are arranged correspondingly, wherein the air nozzle opening of the first oven air nozzle faces a first direction, and the air nozzle opening of the second oven air nozzle faces a second direction; The ultrasonic sensor assembly includes a first ultrasonic sensor and a second ultrasonic sensor, wherein the first ultrasonic sensor is disposed at the air nozzle of the first oven air nozzle, and the second ultrasonic sensor is disposed at the air nozzle of the second oven air nozzle; The air valve opening regulating valve assembly includes a first opening regulating valve and a second opening regulating valve, the first opening regulating valve is respectively connected to the first oven air nozzle and the first ultrasonic sensor, and the second opening regulating valve is respectively connected to the second oven air nozzle and the second ultrasonic sensor.

2. The oven device according to claim 1, characterized in that: The first oven air nozzle is provided with a first air nozzle cavity, and the first ultrasonic sensor is nested inside the first air nozzle cavity.

3. The oven device according to claim 2, characterized in that: The second oven air nozzle is provided with a second air nozzle cavity, and the second ultrasonic sensor is nested inside the second air nozzle cavity.

4. The oven device according to claim 1, characterized in that: The first oven air nozzle and the second oven air nozzle are staggered.

5. The oven device according to claim 1, characterized in that: The oven device further includes a photoelectric sensor, and the photoelectric sensor is disposed at the first oven air nozzle or the second oven air nozzle.

6. The oven device according to any one of claims 1 to 5, characterized in that: The first ultrasonic sensor and the second ultrasonic sensor are I-shaped ultrasonic sensors.

7. The oven device according to claim 6, characterized in that: The I-shaped ultrasonic sensor is arranged at a first sensing end and a second sensing end, the first sensing end is arranged at both sides of the first oven air nozzle and the second oven air nozzle, and the second sensing end is arranged in the middle position of the first oven air nozzle and the second oven air nozzle.

8. The oven device according to claim 1, characterized in that: A diaphragm channel is provided between the first oven air nozzle and the second oven air nozzle.

9. A coating device, characterized in that: The method comprises at least one oven device according to any one of claims 1 to 8.

10. The coating device according to claim 9, characterized in that: The coating equipment further includes a roller device, which includes a first roller mechanism and a second roller mechanism. The first roller mechanism and the second roller mechanism are respectively arranged at both ends of the inlet and outlet of the oven device.

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