Coil bar blade coating equipment and coil bar blade coating method

Abstract

The invention belongs to the technical field of battery manufacturing, and discloses winding bar blade coating equipment and a winding bar blade coating method.The winding bar blade coating equipment comprises a bearing unit, a spin coating unit and a control unit, and the bearing unit is used for bearing a coating substrate; and the spin-coating unit is provided with a first winding bar and a second winding bar, the first winding bar and the second winding bar are arranged in a staggered mode, the spin-coating unit is arranged corresponding to the bearing unit, and the control unit is used for controlling the spin-coating unit to rotate relative to the bearing unit. The wire bar blade coating equipment can solve the problems that an existing wire bar blade coating technology is difficult to achieve uniform film thickness, especially the larger the preparation area is, the more obvious the non-uniformity is, and the front end is thick and the rear end is thin inevitably, the function of preparing a uniform large-area film is achieved, and the wire bar blade coating equipment is simple in structure and convenient to operate. When different blade coating materials are replaced, a long pipeline does not need to be cleaned like a coating device, operation is convenient and fast, and production efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of battery manufacturing, and in particular to a wire rod scraping coating device and a wire rod scraping coating method. Background Art

[0002] In recent years, with the continuous deepening of research, perovskite cells have made rapid progress and are hailed as the "new hope in the photovoltaic field." Although the efficiency of perovskite cells is constantly being refreshed, there are still many obstacles to the scale-up and commercialization of the device. The current preparation methods of perovskite cells include wire rod scraping process and coating process.

[0003] The advantages of wire rod coating are: relatively low equipment cost, fast production speed, suitable for large-scale production; can be operated on different substrates, high flexibility. When changing to different materials, there is no need to clean long pipes and fill liquids like coating equipment. The disadvantages are: it is difficult to achieve uniform film thickness during the preparation process, and the phenomenon of thick front end and thin back end is inevitable, which leads to unstable process and affects the use effect.

[0004] The advantages of the coating process are: it can achieve a more uniform film thickness, which is beneficial to improving device performance and stability; it is suitable for preparing large-area, high-quality films. The disadvantages are: the equipment cost is relatively high, the preparation speed is slow, and it is not suitable for large-scale production; it requires more technology and operating experience, and the operation is difficult; when changing to different coating materials, the operation is more complicated and the process is cumbersome. Summary of the invention

[0005] The first object of the present invention is to provide a wire rod coating device, which has a simple structure, simple operation, high production efficiency, and can prepare a uniform large-area thin film.

[0006] The second object of the present invention is to provide a wire rod scraping method, which is simple to operate, has high production efficiency, and can prepare a uniform large-area thin film.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The present invention discloses a wire rod scraping device, comprising: a carrying unit, the carrying unit is used to carry a coating substrate; a spin coating unit, the spin coating unit has a first wire rod and a second wire rod, the first wire rod and the second wire rod are arranged in an alternating manner, and the spin coating unit is arranged corresponding to the carrying unit; a control unit, the control unit is used to control the spin coating unit to rotate relative to the carrying unit; wherein, when the control unit controls the spin coating unit to rotate relative to the spin coating unit at a predetermined speed so that the spin coating unit rotates from a first relative state to a second relative state relative to the carrying unit, the coating on the coating substrate diffuses from the middle area of ​​the coating substrate to the peripheral area.

[0009] In some embodiments, the wire rod scraping equipment further includes: a support base, which is connected to the control unit; and a height adjustment member, which is installed on the support base and is used to adjust the height of the wire rod relative to the carrying unit.

[0010] In some embodiments, the height adjustment member includes a digital display adjuster, the end of which stops at the wire rod; the wire rod scraping equipment also includes an elastic member, one end of which is connected to the wire rod, and the other end is connected to the support seat.

[0011] In some embodiments, the wire rod coating equipment further includes an annular track arranged around the carrying unit, and a sliding block cooperating with the annular track is provided on the support seat.

[0012] In some embodiments, the wire rod scraping equipment also includes a machine platform and a control unit, the control unit is used to drive the wire rod to rotate relative to the carrying unit; the machine platform is used to support the carrying unit, and a control panel is provided on the machine platform, the control panel is electrically connected to the control unit, and is used to adjust the rotation speed of the control unit.

[0013] In some specific embodiments, the wire rod coating equipment further includes a frequency converter, and the frequency converter is electrically connected to the control unit and the control panel.

[0014] In some specific embodiments, the wire rod scraping equipment also includes a supporting frame, which includes a plurality of columns and a top frame, wherein the top frame is spaced apart from the machine and is used to install the control unit; one end of each of the columns is connected to the top frame, and the other end is connected to the machine, wherein: the top frame has a cross beam inside, a support beam is arranged at the intersection of the cross beams, and the support beam is used to support the control unit.

[0015] In some embodiments, the surface of the carrying unit for carrying the coated substrate is square or circular, and the rotation axis of the wire rod is arranged to pass through the geometric center of the carrying unit.

[0016] The present invention also discloses a wire rod scraping method, which is performed by using the wire rod scraping device described above and comprises:

[0017] S1: placing a coated substrate on a carrier unit and adding a coating on the coated substrate;

[0018] S2: driving the spin coating unit to rotate so that the coating is spread radially outward of the coating substrate under the extrusion of the spin coating unit to form a thin film on the coating substrate, and the maximum fluctuation value of the thickness of the thin film is lower than a preset value.

[0019] In some embodiments, in step S2, before driving the wire rod to rotate, the method further includes adjusting the height of the wire rod relative to the carrying unit; and in step S2, the rotation speed of the wire rod is adjustable.

[0020] The beneficial effects of the wire rod scraping device of the present invention are as follows: in the actual working process, the coating substrate is placed on the bearing unit, and the coating is added to the center of the coating substrate. When the control unit controls the spin coating unit to rotate relative to the spin coating unit at a predetermined speed, so that the spin coating unit rotates from the first relative state to the second relative state relative to the bearing unit, the coating added to the coating substrate diffuses from the middle area of ​​the coating substrate to the peripheral area. The thicker coating in the center is naturally squeezed and spread outward during the rotation of the spin coating unit, and the coating can be spread evenly after rotating for many circles. Therefore, the wire rod scraping device of the present invention can solve the problem that the existing wire rod scraping process is difficult to achieve uniform film thickness, especially the larger the preparation area, the more obvious the non-uniformity, and the problem of thick front end and thin rear end is inevitably generated, so as to realize the function of preparing uniform large-area film, and the wire rod scraping device has a simple structure, and when changing to scrape different materials, it is not necessary to clean a long pipeline like the coating equipment, and the operation is convenient and the production efficiency is high.

[0021] The beneficial effects of the wire rod scraping method of the present invention are as follows: in the actual working process, the coating substrate is placed on the bearing unit, and the coating is added to the coating substrate, and the wire rod is driven to rotate relative to the bearing unit. The coating can be slowly spread outward by rotating the wire rod at different angles. The thicker coating is naturally squeezed and spread outward during the rotation of the wire rod, and the coating can be spread evenly after rotating for many circles. Therefore, the wire rod scraping method of the present invention can solve the problem that the existing wire rod scraping process is difficult to achieve uniform film thickness, especially the larger the preparation area, the more obvious the non-uniformity, and the problem of thick front end and thin rear end is inevitably generated, and the function of preparing uniform large-area film is realized. In addition, the wire rod scraping method does not need to clean a long pipeline like the coating process, and the operation is convenient and the production efficiency is high.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a schematic structural diagram of a wire rod coating device according to a first embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A schematic diagram of the wire rod coating device during operation is shown;

[0025] Figure 3 is a structural schematic diagram of a wire rod coating device according to a second embodiment of the present invention;

[0026] Figure 4 It is a top view of the matching structure of the support frame and the control unit of the second embodiment of the present invention.

[0027] Figure 5 is a flow chart of a wire rod coating method according to an embodiment of the present invention;

[0028] Reference numerals:

[0029] 1. Load-bearing unit;

[0030] 2. Spin coating unit; 21. First wire rod; 22. Second wire rod;

[0031] 3. Control unit;

[0032] 4. Support seat; 41. Support part; 42. Connecting part; 421. Sliding block;

[0033] 5. Height adjustment part; 6. Elastic part; 7. Annular track; 8. Machine platform;

[0034] 901, column; 902, top frame; 903, cross beam; 904, support beam;

[0035] 10. Frequency converter. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] Embodiment 1:

[0041] The present invention discloses a wire rod coating device, referring to Figure 1 and Figure 2As shown, the wire bar scraping device of the present invention includes a bearing unit 1, a spin coating unit 2 and a control unit 3, the bearing unit 1 is used to bear the coated substrate; the spin coating unit 2, the spin coating unit 2 has a first wire bar 21 and a second wire bar 22, the first wire bar 21 and the second wire bar 22 are arranged alternately, the spin coating unit 2 is arranged corresponding to the bearing unit 1, and the control unit 3 is used to control the spin coating unit 2 to rotate relative to the bearing unit 1, when the control unit 3 controls the spin coating unit 2 to rotate relative to the spin coating unit 2 at a predetermined speed, so that the spin coating unit 2 rotates from the first relative state to the second relative state relative to the bearing unit 1, the coating added to the coated substrate diffuses from the middle area of ​​the coated substrate to the peripheral area. It can be understood that in the actual working process, the coated substrate is placed on the bearing unit 1, and the coating is added to the center of the coated substrate. When the control unit 3 controls the spin coating unit 2 to rotate relative to the spin coating unit 2 at a predetermined speed, so that the spin coating unit 2 rotates from the first relative state to the second relative state relative to the bearing unit 1, the coating added to the coated substrate diffuses from the middle area of ​​the coated substrate to the peripheral area. The thicker coating in the center is naturally squeezed and spread outward during the rotation of the spin coating unit 2, and the coating can be spread evenly after rotating for multiple turns. Therefore, the wire rod scraping device of the present invention can solve the problem that it is difficult to achieve uniform film thickness in the existing wire rod scraping process, especially the larger the preparation area, the more obvious the unevenness, and the problem of thick front end and thin back end will inevitably occur, and the function of preparing uniform large-area film can be achieved. The wire rod scraping device has a simple structure, and when changing to scrape different materials, it does not need to clean a long pipeline like a coating device, and the operation is convenient and the production efficiency is high.

[0042] Embodiment 2:

[0043] The structure of the wire rod coating equipment of this embodiment is referenced Figure 3 As shown, the wire rod scraping device also includes a support seat 4 and a height adjustment member 5. The support seat 4 is connected to the control unit 3. The height adjustment member 5 is installed on the support seat 4 and is used to adjust the height of the spin coating unit 2 relative to the carrier unit 1. It can be understood that the distance between the spin coating unit 2 and the carrier unit 1 determines the thickness of the film. In this embodiment, the support seat 4 is used to install the height adjustment member 5, and the height adjustment member 5 can adjust the height of the spin coating unit 2 relative to the carrier unit 1. In the actual working process, the height adjustment member 5 can be used to adjust the height of the spin coating unit 2 before the process starts. After the adjustment is completed, the control unit 3 is started. When the control unit 3 drives the support seat 4 to rotate, the spin coating unit 2 can be driven to rotate, thereby realizing the manufacture of films with different thicknesses.

[0044] Optionally, the height adjustment member 5 includes a digital display adjuster, the end of which stops at the spin coating unit 2; the wire rod coating device also includes an elastic member 6, one end of which is connected to the spin coating unit 2, and the other end is connected to the support seat 4. It can be understood that in the actual working process, the height of the spin coating unit 2 can be adjusted by rotating the end of the digital display adjuster, and according to the display data of the digital display adjuster, the user can accurately adjust the height of the spin coating unit 2, thereby achieving accurate adjustment of the film thickness. The elastic member 6 is used to connect the spin coating unit 2 and the support seat 4, and the elastic member 6 can ensure that the spin coating unit 2 always stops at the digital display adjuster, thereby ensuring the adjustment accuracy of the spin coating unit 2.

[0045] In the embodiment of the present invention, the elastic member 6 can be selected as a spring or an elastic sleeve according to actual needs, and the type of the elastic member 6 is not specifically limited. In the embodiment of the present invention, the connection method between the digital display adjuster and the support seat 4 can be selected according to actual needs, and can be connected by connecting members such as screws, or by snap-on connection.

[0046] Optionally, there are multiple digital display adjusters, which are spaced apart along the axial direction of the spin coating unit 2. It is understandable that in the actual process, the parallelism between the spin coating unit 2 and the carrier unit 1 determines the quality of the film. Adjusting the height of the spin coating unit 2 by multiple digital display adjusters can ensure the parallelism between the spin coating unit 2 and the carrier unit 1, thereby ensuring that the wire rod coating equipment of this embodiment can produce high-quality films. Preferably, there are two digital display adjusters, which are respectively located at the two ends of the spin coating unit 2.

[0047] Optionally, there are multiple elastic members 6, and the multiple elastic members 6 are spaced apart along the axial direction of the spin coating unit 2. It can be understood that in the actual process, the parallelism between the spin coating unit 2 and the carrier unit 1 determines the quality of the film, and the spin coating unit 2 is fixed by multiple elastic members 6, which is conducive to ensuring the parallelism between the spin coating unit 2 and the carrier unit 1, thereby ensuring that the wire rod coating device of this embodiment can produce high-quality films.

[0048] It should be supplemented that, in the embodiment of the present invention, the control unit 3 can select a motor or a rotary cylinder or other structures according to actual needs.

[0049] It should be noted that in other embodiments of the present invention, the structure of the height adjustment member 5 can also be adjusted according to actual needs. For example, in some embodiments, the height adjustment member 5 is a connecting bolt, the support seat 4 is provided with a bolt hole that matches the connecting bolt, and the spin coating unit 2 is provided with a plug-in blind hole that matches the connecting bolt, and the elastic sleeve in the plug-in blind hole. The connecting bolt passes through the bolt hole and is inserted into the elastic sleeve to connect with the spin coating unit 2. In the actual working process, the height of the spin coating unit 2 can also be adjusted by rotating the connecting bolt.

[0050] refer to Figure 3 As shown, the wire rod scraping device also includes an annular track 7 arranged around the bearing unit 1, and a sliding block 421 cooperating with the annular track 7 is provided on the support seat 4. It can be understood that in the actual working process, the control unit 3 starts to drive the spin coating unit 2 to rotate relative to the bearing unit 1, and the coating in the middle can be slowly spread outward by rotating the spin coating unit 2 at different angles. The thicker coating in the center is naturally squeezed and spread outward during the rotation of the spin coating unit 2, and the coating can be spread evenly after rotating for many circles. It can be concluded that the stability of the rotation of the spin coating unit 2 directly determines the quality of the film. In this embodiment, by setting the annular track 7 and the sliding block 421, during the rotation of the driving member support seat 4, the sliding block 421 can only slide along the circumferential direction of the annular track 7, thereby limiting the movement of the support seat 4, which is conducive to improving the rotation stability of the spin coating unit 2, thereby improving the quality of the film.

[0051] Optionally, the support seat 4 includes a support portion 41 and a connection portion 42, wherein the support portion 41 is arranged in parallel with the spin coating unit 2 and is used to support the height adjustment member 5, and the connection portion 42 is connected to the support portion 41 and is arranged toward the bearing unit 1; a sliding block 421 is arranged on the connection portion 42. It can be understood that installing the spin coating unit 2 on the support portion 41 arranged in parallel with the spin coating unit 2 can ensure the installation stability of the spin coating unit 2 and the stability of the height adjustment, thereby being conducive to improving the quality of the film, and providing the connection portion 42 on the support portion 41 for installing the sliding block 421 can facilitate the installation of the sliding block 421, which is more convenient than directly connecting the sliding block 421 to the support portion 41. Preferably, there are two connection portions 42, and the support seat 4 is a gantry structure.

[0052] Further optionally, the support portion 41 and the connecting portion 42 are an integrally formed structure. This is conducive to simplifying the manufacturing process of the support seat 4, thereby reducing the manufacturing cost of the entire wire rod coating device. In addition, in the embodiment of the present invention, the support portion 41 can be fixed to the connecting portion 42 by a connecting member such as a bolt, or can be directly welded to the connecting portion 42. The specific connection method can be selected according to actual needs.

[0053] refer to Figure 3As shown, the wire rod scraping equipment also includes a machine table 8, which is used to support the carrier unit 1. A control panel is provided on the machine table 8. The control panel is electrically connected to the control unit 3 through the frequency converter 10, and is used to adjust the rotation speed of the control unit 3 so that the spin coating unit 2 rotates at different rotation speeds during the process. It can be understood that in the actual working process, the control unit 3 starts to drive the spin coating unit 2 to rotate relative to the carrier unit 1. The coating in the middle can be slowly spread outward by rotating the spin coating unit 2 at different angles. The rotation speed of the control unit 3 is adjusted through the control panel, so that the spin coating unit 2 rotates at different rotation speeds during the process and spreads the coating, which is beneficial to improving the quality of the film.

[0054] refer to Figure 3 As shown, the wire rod scraping device also includes a support frame, which includes a plurality of columns 901 and a top frame 902. The top frame 902 is spaced apart from the machine 8 and is used to install the control unit 3; one end of each column 901 is connected to the top frame 902, and the other end is connected to the machine 8. It can be understood that installing the control unit 3 through the support frame can ensure that the control unit 3 is stably installed above the bearing unit 1, and ensure that the spin coating unit 2 can move stably, which is conducive to improving the quality of the film. The support frame has a simple structure and a small weight, which is conducive to reducing the manufacturing cost of the wire rod scraping device.

[0055] Optional, reference Figure 4 As shown, the top frame 902 has a cross beam 903 inside, and a support beam 904 is set at the intersection of the cross beam 903, and the support beam 904 is used to support the control unit 3. It can be understood that the support beam 904 is set at the intersection of the cross beam 903, and the support beam 904 is used to support the control unit 3, so that the rotation axis of the spin coating unit 2 can pass through the geometric center of the bearing unit 1. In the actual working process, the coating substrate is usually placed at the center of the bearing unit 1, and the rotation axis of the spin coating unit 2 passes through the geometric center of the bearing unit 1, which can facilitate the thicker coating in the center to be naturally squeezed and spread outward during the rotation of the spin coating unit 2, and the coating can be spread evenly after rotating for multiple circles.

[0056] Optionally, the surface of the carrier unit 1 for carrying the coated substrate is square or circular, and the rotation axis of the spin coating unit 2 is set through the geometric center of the carrier unit 1. In actual working process, the coated substrate is usually placed in the center of the carrier unit 1, and the rotation axis of the spin coating unit 2 is set through the geometric center of the carrier unit 1, which can facilitate the thicker coating in the center to be naturally squeezed and spread outward during the rotation of the spin coating unit 2, and the coating can be spread evenly after rotating multiple times.

[0057] The present invention discloses a wire rod scraping method, such as Figure 5As shown, the wire rod scraping method includes the following steps: S1: placing a coated substrate on a carrying unit 1, and adding a coating on the coated substrate; S2: driving the spin coating unit 2 to rotate so that the coating is spread radially outward of the coated substrate under the extrusion action of the spin coating unit 2 to form a thin film on the coated substrate, and the maximum fluctuation value of the thickness of the thin film is lower than a preset value.

[0058] It is understandable that during the process, the coating substrate is placed on the carrier unit 1, and the coating is added to the coating substrate. The spin coating unit 2 rotates relative to the carrier unit 1. The coating can be slowly spread outward by rotating the spin coating unit 2 at different angles. The thicker coating is naturally squeezed and spread outward during the rotation of the spin coating unit 2. After rotating for many circles, the coating can be spread evenly. Therefore, the wire rod scraping method of the present invention can solve the problem that it is difficult to achieve uniform film thickness in the existing wire rod scraping process, especially the larger the preparation area, the more obvious the unevenness, and the problem of thick front end and thin back end will inevitably occur, so as to realize the function of preparing uniform large-area film, and when changing to scrape different materials, there is no need to clean a long pipe like the coating process, so that the wire rod scraping method disclosed in the present invention is easy to operate and has high production efficiency.

[0059] It should be noted that the maximum fluctuation value of the thickness of the film refers to the difference between the maximum thickness and the minimum thickness of the film. For example, during the process, the maximum fluctuation value of the thickness of the film can be determined based on the average thickness of the formed film. For example, if the average thickness is 50 μm, then the maximum fluctuation value of the thickness of the film does not exceed 2% of the average thickness, that is, 1 μm. Of course, in an alternative embodiment, the maximum fluctuation value of the thickness of the film can also be directly specified as a specific value according to the process requirements, such as 1.5 μm, etc.

[0060] In addition, during the spin coating process, the maximum thickness on the film refers to the maximum thickness of the film itself. If there are obvious protrusions on the film due to environmental reasons or raw materials, the thickness of the protrusions should not be regarded as the thickness of the film itself.

[0061] Optionally, in step S2, before driving the spin coating unit 2 to rotate, the step further includes adjusting the height of the spin coating unit 2 relative to the carrier unit. The spacing between the spin coating unit 2 and the carrier unit 1 determines the thickness of the film. In the actual working process, the height of the spin coating unit 2 is adjusted before the process starts to achieve the manufacture of films of different thicknesses, so that the wire rod scraping method of this embodiment can be applied to the manufacture of films of various thicknesses.

[0062] Optionally, in step S2, the rotation speed of the spin coating unit 2 is adjustable. In actual operation, the spin coating unit 2 rotates relative to the carrier unit 1. By rotating the spin coating unit 2 at different angles, the coating in the middle can be slowly spread outward. By adjusting the rotation speed of the spin coating unit 2, the quality of the film can be improved.

[0063] Optionally, in step S1, the coating is added to the center of the coated substrate. Therefore, during the actual process, the spin coating unit 2 rotates relative to the carrier unit 1, and the coating with a thicker thickness at the center can be slowly spread outward by rotating the spin coating unit 2 at different angles, which is conducive to improving the uniformity of the film at the center and edge of the coated substrate, thereby better solving the problem that it is difficult to achieve uniform film thickness in the existing wire rod scraping process, especially the larger the preparation area, the more obvious the unevenness, and inevitably produces the problem of thick front end and thin back end.

[0064] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A wire rod coating device, characterized in that: include: A carrying unit (1), the carrying unit (1) being used for carrying a coated substrate; A spin coating unit (2), the spin coating unit (2) comprising a first wire rod (21) and a second wire rod (22), the first wire rod (21) and the second wire rod (22) being arranged in a staggered manner, and the spin coating unit (2) being arranged corresponding to the carrying unit (1); A control unit (3), the control unit (3) being used to control the spin coating unit (2) to rotate relative to the carrying unit (1); When the control unit (3) controls the spin coating unit (2) to rotate relative to the spin coating unit (2) at a predetermined speed, so that the spin coating unit (2) rotates from a first relative state to a second relative state relative to the supporting unit (1), the coating on the coating substrate diffuses from the middle area of ​​the coating substrate to the peripheral area.

2. The wire rod coating equipment according to claim 1, characterized in that: The wire rod coating equipment also includes: A support base (4), the support base (4) being connected to the control unit (3); A height adjustment member (5), the height adjustment member (5) is mounted on the support seat (4) and is used to adjust the height of the spin coating unit (2) relative to the carrying unit (1).

3. The wire rod coating equipment according to claim 2, characterized in that: The height adjustment member (5) comprises a digital display adjuster, the end of which stops at the spin coating unit (2); the wire rod scraping device also comprises an elastic member (6), one end of which is connected to the spin coating unit (2) and the other end of which is connected to the support seat (4).

4. The wire rod coating equipment according to claim 2, characterized in that: The wire rod scraping device further comprises an annular track (7) arranged around the carrying unit (1), and a sliding block (421) cooperating with the annular track (7) is provided on the support seat (4).

5. The wire rod coating equipment according to claim 1, characterized in that: The wire rod coating equipment further comprises a machine platform (8), wherein the machine platform (8) is used to support the carrying unit (1), and a control panel is provided on the machine platform (8), wherein the control panel is electrically connected to the control unit (3) and is used to adjust the rotation speed of the control unit (3).

6. The wire rod coating equipment according to claim 5, characterized in that: The wire rod coating device further comprises a frequency converter (10), wherein the frequency converter (10) is electrically connected to the control unit (3) and the control panel.

7. The wire rod coating equipment according to claim 5, characterized in that: The wire rod scraping equipment also includes a support frame, which includes a plurality of columns (901) and a top frame (902), wherein the top frame (902) is spaced apart from the machine platform (8) and is used to install the control unit (3); one end of each column (901) is connected to the top frame (902), and the other end is connected to the machine platform (8), wherein: a cross beam (903) is provided inside the top frame (902), a support beam (904) is provided at the intersection of the cross beam (903), and the support beam (904) is used to support the control unit (3).

8. The wire rod coating equipment according to claim 1, characterized in that: The surface of the carrying unit (1) for carrying the coated substrate is square or circular, and the rotation axis of the spin coating unit (2) is arranged to pass through the geometric center of the carrying unit (1).

9. A wire rod coating method, characterized in that: The wire rod coating method is performed using a wire rod coating device as described in any one of claims 1 to 8, and comprises: S1: placing a coated substrate on a carrier unit (1) and adding a coating on the coated substrate; S2: driving the spin coating unit (2) to rotate so that the coating is spread radially outward of the coating substrate under the squeezing action of the spin coating unit (2) to form a thin film on the coating substrate, and the maximum fluctuation value of the thickness of the thin film is lower than a preset value.

10. The wire rod coating method according to claim 9, characterized in that: In step S2, before driving the spin coating unit (2) to rotate, the method further includes adjusting the height of the spin coating unit (2) relative to the carrier unit (1); and in step S2, the rotation speed of the spin coating unit (2) is adjustable.

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