Friction scribing device and use method

Abstract

The invention provides a friction scribing device and a use method, and relates to the technical field of perovskite solar cells. The friction scribing device comprises a base plate platform, a friction head, a driving mechanism and a position control system. The friction head is located above the substrate platform, the friction head is made of a flexible material, and the substrate platform is used for placing a perovskite thin film substrate; the driving mechanism is in transmission connection with the friction head to drive the friction head to move and rotate; the position control system is in signal connection with the driving mechanism and used for controlling the motion trail of the friction head. The friction scribing device solves the technical problems that in the prior art, traditional scribing equipment is high in cost and complex in process, and a perovskite thin film is prone to being damaged.

Description

Technical Field

[0001] This application relates to the field of perovskite solar cell technology, and more specifically, to a scribing device and its usage method. Background Technology

[0002] Perovskite solar cells have become a research hotspot in the photovoltaic field due to their high efficiency and low cost. In the fabrication process of perovskite solar cells, it is usually necessary to divide the perovskite thin film into multiple sub-cells and connect them in series using a scribing process. Traditional scribing methods, including laser scribing and mechanical scribing, suffer from problems such as high equipment costs, complex processes, and easy damage to the perovskite thin film. Summary of the Invention

[0003] The purpose of this invention is to provide a friction scribing device and a method of use, so as to alleviate the technical problems of high cost, complex process and easy damage to perovskite thin films in the existing technology of traditional scribing equipment.

[0004] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: In a first aspect, the friction scribing device provided by the present invention includes a substrate platform, a friction head, a drive mechanism, and a position control system; The friction head is located above the substrate platform and is made of a flexible material. The substrate platform is used to place the perovskite thin film substrate. The drive mechanism is connected to the friction head to drive the friction head to move and rotate; The position control system is signal-connected to the drive mechanism and is used to control the movement trajectory of the friction head.

[0005] Furthermore, the surface of the friction head is provided with a plurality of raised structures, which are arranged at intervals.

[0006] Furthermore, the friction head is integrally formed with the protruding structure.

[0007] Furthermore, the friction head includes a connecting post and a spherical part, one end of the connecting post is connected to the driving mechanism, and the other end is connected to the spherical part, and the spherical part is spherical; The outer surface of the spherical portion has a plurality of the aforementioned protrusion structures.

[0008] Furthermore, multiple of the protruding structures are evenly distributed on the outer surface of the spherical portion.

[0009] Furthermore, the material of the friction head is polydimethylsiloxane or polyurethane.

[0010] Furthermore, the friction marking device includes a telescopic rod, one end of which is connected to the drive mechanism and the other end is connected to the friction head, and the telescopic rod is extendable.

[0011] Furthermore, the friction scribing device includes a pressure control system, which includes a pressure sensor and a pressure control mechanism; The pressure sensor is mounted on the friction head; The pressure control mechanism is installed between the drive mechanism and the telescopic rod, and is signal-connected to the pressure sensor, for controlling the contact pressure between the friction head and the perovskite film.

[0012] Furthermore, the drive mechanism is located above the friction head, and the position control system is located inside the substrate platform.

[0013] Secondly, the method of using the friction marking device according to any one of the above claims provided by the present invention includes: Place the perovskite thin film substrate to be scribed on the substrate platform; According to the preset marking pattern, control the friction head to move to the starting position; The friction head is controlled to rub the surface of the perovskite film at a preset pressure and speed to form scribing lines.

[0014] Based on the above technical solutions, the technical effects achievable by this invention can be analyzed as follows: In a first aspect, the friction scribing device provided by the present invention includes a substrate platform, a friction head, a drive mechanism, and a position control system; the friction head is located above the substrate platform and is made of a flexible material; the substrate platform is used to place a perovskite thin film substrate; the drive mechanism is connected to the friction head for driving the friction head to move and rotate; the position control system is connected to the drive mechanism for controlling the movement trajectory of the friction head.

[0015] The support surface of the substrate platform is used to place the perovskite thin film substrate to be scribed, providing support for the perovskite thin film substrate. The friction head is made of a flexible material to avoid damage to the perovskite thin film and can be used to scribble lines on the perovskite thin film. The drive mechanism is connected to the friction head, applying pressure to the friction head and then using the friction between the friction head and the perovskite thin film to scribble lines on the surface of the perovskite thin film; the drive mechanism can drive the friction head to rotate, so that the friction head can scribble lines on the perovskite thin film; the drive mechanism can drive the friction head to reciprocate, so that the friction head can scribble lines at different positions on the perovskite thin film. The position control system is used to control the drive mechanism, so that the drive mechanism drives the friction head to move according to a preset motion trajectory, thereby achieving precise scribing.

[0016] This friction scribing device has the following advantages: Low equipment cost: It adopts a simple mechanical structure and does not require expensive laser equipment; The process is simple: it is easy to operate and can be easily automated. Minimal damage to perovskite films: The friction head, made of flexible material, effectively avoids damage to the perovskite film.

[0017] High scribing accuracy: The movement trajectory of the friction head can be precisely controlled by the position control system, which can achieve high-precision scribing.

[0018] Secondly, the method of using the friction scribing device provided by the present invention includes the following steps: placing the perovskite thin film substrate to be scribed on the substrate platform; controlling the friction head to move to the starting position according to the preset scribing pattern; controlling the friction head to rub the perovskite thin film surface with preset pressure and preset speed to form scribing lines.

[0019] During scribing, the perovskite thin film substrate is first placed on a substrate platform. Then, according to the preset scribing pattern, the friction head is controlled to move to the starting position. Next, the friction head is controlled to rub the perovskite thin film surface at a preset pressure and speed to form scribing lines. Finally, the above steps are repeated until all scribing lines are completed. In this method, the friction head rubs the perovskite thin film surface at a preset pressure and speed, resulting in minimal damage to the perovskite thin film. In addition, this method improves the degree of automation and precisely controls the movement trajectory of the friction head, enabling high-precision scribing. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the friction scribing device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the friction head in the friction scribing device provided in the embodiments of this application.

[0022] icon: 100-Substrate Platform; 200 - Friction head; 210 - Protruding structure; 220 - Connecting post; 230 - Spherical part; 300-Drive mechanism; 400-Position Control System; 500-Telescopic pole; 610 - Pressure sensing element; 620 - Pressure control mechanism. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Example 1 Perovskite solar cells have become a research hotspot in the photovoltaic field due to their high efficiency and low cost. In the fabrication process of perovskite solar cells, it is usually necessary to divide the perovskite thin film into multiple sub-cells and connect them in series using a scribing process. Traditional scribing methods include laser scribing and mechanical scribing, but these methods suffer from problems such as high equipment costs, complex processes, and easy damage to the perovskite thin film.

[0027] In view of this, see Figure 1 and Figure 2The friction scribing device provided in this embodiment of the invention includes a substrate platform 100, a friction head 200, a drive mechanism 300, and a position control system 400. The friction head 200 is located above the substrate platform 100 and is made of a flexible material. The substrate platform 100 is used to place a perovskite thin film substrate. The drive mechanism 300 is connected to the friction head 200 to drive the friction head 200 to move and rotate. The position control system 400 is connected to the drive mechanism 300 to control the movement trajectory of the friction head 200.

[0028] Specifically, this scribing device is applied to perovskite solar cells to scribble lines on the perovskite cells.

[0029] The support surface of the substrate platform 100 is used to place the perovskite thin film substrate to be scribed, providing support for the perovskite thin film substrate. The friction head 200 is made of a flexible material, which can avoid damage to the perovskite thin film, and can be used to scribble lines on the perovskite thin film. The drive mechanism 300 is connected to the friction head 200, applying pressure to the friction head 200 and then using the friction between the friction head 200 and the perovskite thin film to scribble lines on the surface of the perovskite thin film; the drive mechanism 300 can drive the friction head 200 to rotate, so that the friction head 200 can scribble lines on the perovskite thin film; the drive mechanism 300 can drive the friction head 200 to reciprocate, so that the friction head 200 can scribble lines at different positions on the perovskite thin film. The position control system 400 is used to control the drive mechanism 300, so that the drive mechanism 300 drives the friction head 200 to move according to a preset motion trajectory, thereby achieving precise scribing.

[0030] This friction scribing device has the following advantages: Low equipment cost: Utilizing a simple mechanical structure, it eliminates the need for expensive laser equipment; Simple process: Easy to operate and readily automated; Minimal damage to perovskite films: The friction head 200, made of flexible material, effectively avoids damage to the perovskite film; High scribing accuracy: The position control system 400 precisely controls the movement trajectory of the friction head 200, achieving high-precision scribing.

[0031] The structure and shape of the friction head 200 in the friction scribing device are described in detail below: In the optional solution provided by the embodiments of the present invention, the surface of the friction head 200 is provided with a plurality of protrusions 210, and the plurality of protrusions 210 are arranged at intervals.

[0032] Specifically, the protrusion 210 is arc-shaped; or, the protrusion 210 is cylindrical; or, the protrusion 210 is spike-shaped.

[0033] A raised structure 210 is mounted on the surface of the friction head 200 to enhance the friction effect.

[0034] In the optional solution provided by the embodiments of the present invention, the friction head 200 and the protrusion structure 210 are integrally formed.

[0035] Specifically, a friction head 200 with a raised structure 210 is formed by using a mold, thereby improving the connection strength between the friction head 200 and the raised structure 210.

[0036] The friction head 200 and the raised structure 210 are integrally formed, which enhances the connection strength between the friction head 200 and the raised structure 210 and extends the service life of the friction head 200.

[0037] Among the optional solutions provided in the embodiments of the present invention, see [link to relevant documentation]. Figure 2 The friction head 200 includes a connecting post 220 and a spherical part 230. One end of the connecting post 220 is connected to the drive mechanism 300, and the other end is connected to the spherical part 230. The spherical part 230 is spherical. The outer surface of the spherical part 230 has a plurality of protrusions 210.

[0038] Specifically, the connecting post 220 is cylindrical, and its bottom is connected to the spherical part 230. The connecting post 220 and the spherical part 230 are integrally formed; or, the connecting post 220 and the spherical part 230 are separate structures, connected by means of bonding or other methods.

[0039] The connecting post 220 is used to connect the drive mechanism 300 and the spherical part 230, which is used to scribble lines on the perovskite film.

[0040] In the optional solution provided by the embodiments of the present invention, a plurality of protrusions 210 are evenly distributed on the outer surface of the spherical portion 230.

[0041] Specifically, multiple protruding structures 210 are arranged neatly.

[0042] The even distribution of multiple protrusions 210 ensures that the frictional force output of the spherical part 230 is continuous and stable, achieving all-round friction scribing without dead angles; in addition, the even distribution of multiple protrusions 210 ensures uniform wear of the friction head 200, extends the service life of the friction head 200, and maintains consistent performance throughout the life cycle of the friction head 200.

[0043] In the optional solutions provided in the embodiments of the present invention, the material of the friction head 200 is polydimethylsiloxane or polyurethane.

[0044] Specifically, the friction head 200 is made of flexible materials such as polydimethylsiloxane (PDMS) or polyurethane (PU) to make the friction head 200 flexible and avoid damaging the perovskite film.

[0045] The following details the other structural features of the friction scribing device: In an optional embodiment of the present invention, the friction marking device includes a telescopic rod 500, one end of which is connected to the drive mechanism 300 and the other end is connected to the friction head 200, and the telescopic rod 500 is telescopic.

[0046] Specifically, the telescopic rod 500 is telescopic. Before marking, the length of the telescopic rod 500 is adjusted so that the height between the friction head 200 and the base plate platform 100 meets the requirements. For example, the telescopic rod 500 includes an outer sleeve, an inner rod body, an array of positioning holes, and a manual locking pin. The outer sleeve serves as a fixed base, and its wall has a row of evenly distributed positioning holes. The inner rod body is nested inside the outer sleeve, and its surface is machined with corresponding through holes. The end of the rod body is connected to the connecting post 220 in the friction head 200. During adjustment, the user manually pulls out the manual locking pin and directly pulls or pushes the inner rod body to the required length. When the through hole of the inner rod body aligns with a positioning hole on the outer sleeve, the locking pin is inserted through both to achieve mechanical rigid locking.

[0047] The telescopic rod 500 has an adjustable length to accommodate perovskite films of different thicknesses.

[0048] In an optional embodiment of the present invention, the friction scribing device includes a pressure control system, which includes a pressure sensor 610 and a pressure control mechanism 620. The pressure sensor 610 is installed on the friction head 200. The pressure control mechanism 620 is installed between the drive mechanism 300 and the telescopic rod 500 and is signal-connected to the pressure sensor 610 to control the contact pressure between the friction head 200 and the perovskite film.

[0049] Specifically, the drive assembly and the pressure control mechanism 620 are connected together by bolts. The pressure control mechanism 620 can adjust the pressure during the movement of the friction head 200. The pressure control mechanism 620 can be configured as a pneumatic control mechanism or a hydraulic control mechanism, which is not limited here.

[0050] The pressure control system is used to control the contact pressure between the friction head 200 and the perovskite film.

[0051] In the optional solution provided by the embodiments of the present invention, the drive mechanism 300 is located above the friction head 200, and the position control system 400 is located inside the substrate platform 100.

[0052] Specifically, the drive mechanism 300 includes a drive assembly, a drive support plate, and a support frame. The drive support plate is mounted on top of the support frame, and the drive assembly is fixedly mounted on the drive support plate. The base plate platform 100 is located inside the support frame. For example, the drive assembly includes a translational servo motor, a ball screw, a rotary servo motor, and a connecting flange. The translational servo motor and the ball screw are fixedly connected via a coupling. The nut seat on the ball screw serves as an integrated platform, directly mounting the rotary servo motor. The output shaft of the rotary motor is connected to the connecting flange via a rigid coupling, and the pressure control mechanism 620 is mounted on this connecting flange. The telescopic rod 500 is connected to the pressure control mechanism 620, and the friction head 200 is connected to the telescopic rod 500. During operation, the translational servo motor drives the ball screw to rotate, transforming it into a nut seat, which, along with the entire rotary drive unit on it, translates along a linear guide rail. Simultaneously, the rotary servo motor integrated on the nut seat directly drives the connecting flange and the friction head 200, achieving rotation. The position control system 400 includes a computer, which automatically controls the operation of the drive components through computer programming, thereby realizing the automated control of the friction scribing device and improving the scribing accuracy.

[0053] The drive assembly is located above the friction head 200, which allows the friction head 200 to be positioned above the substrate platform 100 while utilizing the space above the friction head 200, thus avoiding the problem of the friction scribing device occupying too much space. The position control system 400 is located inside the substrate platform 100, facilitating adjustment and observation of the position control system 400.

[0054] The following is a detailed explanation of the principle of the friction scribing device: The substrate platform 100 is used to place the perovskite thin film substrate to be scribed. The rubbing head 200 is made of PDMS material, and its surface is provided with raised structures 210. The drive mechanism 300 is used to drive the rubbing head 200 to reciprocate on the surface of the perovskite thin film. The pressure control system is used to control the contact pressure between the rubbing head 200 and the perovskite thin film. The position control system 400 is used to control the movement trajectory of the perovskite thin film.

[0055] Example 2 The method of using the friction scribing device provided in this embodiment of the invention includes the following steps: placing the perovskite thin film substrate to be scribed on the substrate platform 100; controlling the friction head 200 to move to the starting position according to the preset scribing pattern; controlling the friction head 200 to rub the perovskite thin film surface with preset pressure and preset speed to form scribing lines.

[0056] Specifically, the preset speed of the friction head 200 is set to 0.1-10 mm / s, and the preset pressure between the friction head 200 and the perovskite film is set to 0.01-1 N.

[0057] During scribing, the perovskite thin film substrate is first placed on the substrate platform 100. Then, according to the preset scribing pattern, the friction head 200 is controlled to move to the starting position. Next, the friction head 200 is controlled to rub the perovskite thin film surface at a preset pressure and speed to form scribing lines. Finally, the above steps are repeated until all scribing lines are completed. In this method, the friction head 200 rubs the perovskite thin film surface at a preset pressure and speed, causing minimal damage to the perovskite thin film. In addition, this method improves the degree of automation and precisely controls the movement trajectory of the friction head 200, enabling high-precision scribing.

[0058] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0059] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A friction marking device, characterized in that, include: The substrate platform (100), the friction head (200), the drive mechanism (300), and the position control system (400) are included. The friction head (200) is located above the substrate platform (100), and the friction head (200) is made of a flexible material. The substrate platform (100) is used to place the perovskite thin film substrate. The drive mechanism (300) is connected to the friction head (200) for driving the friction head (200) to move and rotate; The position control system (400) is signal-connected to the drive mechanism (300) and is used to control the movement trajectory of the friction head (200).

2. The friction scribe apparatus of claim 1, wherein, The surface of the friction head (200) is provided with a plurality of protrusions (210), which are arranged at intervals.

3. The friction scribe apparatus of claim 2, wherein, The friction head (200) is integrally formed with the protruding structure (210).

4. The friction scribe apparatus of claim 3, wherein, The friction head (200) includes a connecting post (220) and a spherical part (230). One end of the connecting post (220) is connected to the driving mechanism (300) for transmission, and the other end is connected to the spherical part (230). The spherical part (230) is spherical. The outer surface of the spherical portion (230) has a plurality of the protrusions (210).

5. The friction scribe apparatus of claim 4, wherein, Multiple protrusions (210) are evenly distributed on the outer surface of the spherical portion (230).

6. The friction marking device according to any one of claims 1-5, characterized in that, The friction head (200) is made of polydimethylsiloxane or polyurethane.

7. The friction marking device according to claim 1, characterized in that, The friction marking device includes a telescopic rod (500), one end of which is connected to the drive mechanism (300) and the other end is connected to the friction head (200), and the telescopic rod (500) is telescopic.

8. The friction scribing device according to claim 7, characterized in that, The friction marking device includes a pressure control system, which includes a pressure sensor (610) and a pressure control mechanism (620). The pressure sensor (610) is mounted on the friction head (200); The pressure control mechanism (620) is installed between the drive mechanism (300) and the telescopic rod (500) and is signal-connected to the pressure sensor (610) to control the contact pressure between the friction head (200) and the perovskite film.

9. The friction marking device according to claim 1, characterized in that, The drive mechanism (300) is located above the friction head (200), and the position control system (400) is located inside the substrate platform (100).

10. A method of using the friction marking device according to any one of claims 1-9, characterized in that, include: Place the perovskite thin film substrate to be scribed on the substrate platform (100); According to the preset scribing pattern, control the friction head (200) to move to the starting position; The friction head (200) is controlled to rub the surface of the perovskite film with a preset pressure and a preset speed to form a scribing line.

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