Cutting and unwinding device for flexible stainless steel substrate of solar cell
The cutting and unwinding device for flexible stainless steel substrates integrates cutting and unwinding functions, allowing for easy handling and reducing impurity diffusion, thereby improving the convenience and performance of solar cell substrates.
Patent Information
- Application Number
- CN202323197070.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-24
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-11-24
AI Technical Summary
Existing flexible stainless steel substrates for solar cells are inconvenient to use as they require unwinding and cutting separately, which complicates their handling and can lead to substrate damage during the process.
A cutting and unwinding device that integrates a storage box with a cutting mechanism, using a laser cutter and a MoNx thin film barrier layer to prevent impurity element diffusion and facilitate cutting and unwinding stainless steel substrates, the substrate body, which incorporates a substrate body, the substrate body, the substrate is rolled up on a substrate body, the substrate is rolled up on the surface of the substrate, and the substrate is rolled up on the substrate, and the substrate is rolled up on the surface of the carrier shaft, the carrier shaft is placed between two U-shaped lifting frames, and the substrate body is pulled out to drive rotation, realizing placement and removal of the substrate body.
Enables convenient and efficient cutting of flexible stainless steel substrates to any desired length, while preventing harmful impurity diffusion, thus enhancing the performance and usability of solar cells.
Smart Images
Figure CN222154284U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar cell substrates, in particular to a cutting and unwinding device for a flexible stainless steel substrate of a solar cell. Background Art
[0002] A solar cell is a power generation device that uses sunlight to shine on a semiconductor material to generate current through the photoelectric effect of the semiconductor material. Traditional solar cells usually use hard materials such as glass and ceramics as substrates. These substrate materials have high stability, but they also have some problems. For example, the hard material substrate is heavy, which is not conducive to the lightweight of solar cells; at the same time, the hard material substrate also limits the application scope of solar cells and cannot adapt to some special application scenarios. Therefore, the development of new solar cell substrate materials has become an urgent problem to be solved.
[0003] As a metal material with excellent mechanical properties and corrosion resistance, flexible stainless steel has the advantages of light weight, high strength and corrosion resistance. At the same time, flexible stainless steel also has good electrical conductivity, which can effectively improve the power generation efficiency of solar cells. Therefore, there is great potential in applying flexible stainless steel to the substrate material of solar cells. Flexible stainless steel substrate for solar cells is an emerging technology. The copper indium gallium selenide cell technology with flexible stainless steel as the substrate is popular in the market because of the outstanding characteristics of the cell being bendable and easy to make into lightweight components that fit perfectly with buildings and installation surfaces. For the cutting of flexible stainless steel substrates for solar cells, non-contact cutting methods such as laser cutting or plasma cutting are usually used to avoid damage to the material.
[0004] Flexible CIGS solar cells have attracted wide attention due to their flexibility, lightness, stability and high efficiency, and are used in aerospace, photovoltaic building integration and other fields. Stainless steel is used as the mainstream substrate for flexible CIGS solar cells due to its low cost, high temperature resistance and roll-to-roll production technology. However, one of the huge problems faced by flexible CIGS solar cells with stainless steel substrates is that the diffusion of harmful impurity elements such as Fe in the substrate into the CIGS absorption layer will affect the performance of the solar cell. The Mo Nx barrier layer prepared on the stainless steel substrate can prevent the diffusion of harmful impurity elements such as Fe into the CIGS absorption layer, thereby improving the performance of the CIGS solar cell.
[0005] Some existing stainless steel flexible substrates are rolled up by a winding device during production. When the substrate is to be used, the substrate needs to be unrolled first, and then a cutting device needs to be used to cut the substrate, which makes it inconvenient to use the substrate at any time.
[0006] For example, the device for winding stainless steel flexible substrates disclosed in the announcement number CN214934504U uses a motor to drive the rotating drum to complete the winding of the semi-finished product instead of skilled personnel winding the semi-finished product; it prevents the semi-finished product from being damaged by too large a size and too small a size; the shaft drum can be quickly removed and installed; this device does not require the operator's experience, and the semi-finished product will rarely or will not cause dents or wrinkles during the winding process. The semi-finished product after winding is easy to unwind and reload for production. The substrate is wound by the device of this patent, and the semi-finished product after winding needs to be unwound and reloaded before the subsequent production process can be carried out.
[0007] Therefore, it is necessary to invent a cutting and unwinding device for a flexible stainless steel substrate of a solar cell to solve the above problems. Utility Model Content
[0008] The utility model aims to provide a cutting and unwinding device for a flexible stainless steel substrate of a solar cell, so as to solve the problem that some existing stainless steel flexible substrates are rolled up by a winding device during production, and when the substrate is taken out, the substrate needs to be unrolled first, and then a cutting device needs to be found to cut the substrate, which makes it inconvenient to take the substrate at any time.
[0009] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cutting and unwinding device for a flexible stainless steel substrate of a solar cell, comprising a substrate body, a storage box and a cutting mechanism, both sides of the inner wall of the storage box are fixedly connected with U-shaped lifting frames, a loading shaft is rotatably connected between the two U-shaped lifting frames, the substrate body is rolled up on the surface of the loading shaft, a guide shaft is rotatably connected inside the storage box, the guide shaft is arranged directly below the substrate body, the cutting mechanism is composed of a cutting box, a base, a laser cutter and a laser generator, the cutting box and the base are fixedly connected to one side of the storage box, the cutting box is arranged on the top of the base, one end of the substrate body bypasses the bottom of the guide shaft and extends to the inside of the cutting box, the laser cutter is arranged above the cutting box, and the laser generator is installed on the outside of the storage box.
[0010] The substrate body is rolled up by the carrier shaft, and the carrier shaft is placed between two U-shaped lifting frames. Pulling the substrate body can drive the carrier shaft to rotate, thereby realizing the placement and removal of the substrate body.
[0011] Preferably, a capping cover is hingedly mounted on the top of the storage box, and the laser cutter is electrically connected to the laser generator.
[0012] The laser is generated by a laser generator, and then a high-energy laser beam is emitted outward by a laser cutter to cut the stainless steel substrate body with the laser.
[0013] Preferably, an open slot is provided at the top of the cutting box, and slide rails are installed on both sides of the inner wall of the open slot.
[0014] Slide rails are installed on both sides of the opening groove to facilitate pushing the laser cutter to move along the slide rails.
[0015] Preferably, the laser cutter is disposed between the two slide rails, and sliders are fixedly connected to both sides of the laser cutter, and the sliders are slidably connected to the slide rails.
[0016] Preferably, a shielding plate is hingedly installed on the front of the cutting box, and a shift handle is fixedly connected to the top of the laser cutter.
[0017] Lifting the shielding plate facilitates pulling out the substrate body, and lowering the shielding plate prevents the user from accidentally touching it during laser cutting.
[0018] Preferably, a laser cutting table is provided on the top of the base, and the laser cutting table is arranged directly below the opening groove.
[0019] By arranging a laser cutting table on the base, it is prevented that the laser may damage the base.
[0020] Preferably, the cutting box and the top cover are both made of transparent acrylic material, and the storage box and the top cover are fixed by adsorption through a magnetic block.
[0021] The transparent cutting box and cover make it easy to observe the cutting process and the remaining amount of the substrate body.
[0022] Preferably, the substrate body is made of a flexible stainless steel strip, and a Mo Nx thin film barrier layer is provided on the surface of the substrate body.
[0023] Providing a MoNx thin film barrier layer on the surface of the substrate body can prevent harmful impurity elements of Fe from diffusing into the copper indium gallium selenide absorption layer, which is beneficial to improving the performance of copper indium gallium selenide solar cells.
[0024] In the above technical solution, the technical effects and advantages provided by the utility model are:
[0025] By rolling up the substrate body and storing it in a storage box, one side of the storage box is equipped with a cutting mechanism. The substrate body is pulled out and passed through the cutting box. The laser cutter can be moved to cut and cut the substrate body, making it convenient for users to take the substrate at any time and cut the substrate to any length according to needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0027] Figure 2 It is a structural sectional view of the utility model;
[0028] Figure 3 This is a schematic diagram of the overall structure of the utility model when the substrate body is taken out;
[0029] Figure 4 This is a schematic diagram of the structure of the laser cutter and the slide rail of the utility model;
[0030] Figure 5 It is a structural schematic diagram of the cutting box and the base of the utility model.
[0031] Description of reference numerals:
[0032] 1. Substrate body; 2. Storage box; 3. U-shaped lifting frame; 4. Loading shaft; 5. Guide shaft; 6. Cutting box; 7. Base; 8. Laser cutter; 9. Laser generator; 10. Top cover; 11. Opening groove; 12. Slide rail; 13. Slider; 14. Shielding plate; 15. Shift handle; 16. Laser cutting table. DETAILED DESCRIPTION
[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0034] The utility model provides Figure 1-5 A cutting and unwinding device for a flexible stainless steel substrate for a solar cell shown in the figure comprises a substrate body 1, a storage box 2 and a cutting mechanism, U-shaped lifting frames 3 are fixedly connected to both sides of the inner wall of the storage box 2, a loading shaft 4 is rotatably connected between the two U-shaped lifting frames 3, the substrate body 1 is rolled up on the surface of the loading shaft 4, a guide shaft 5 is rotatably connected inside the storage box 2, the guide shaft 5 is arranged directly below the substrate body 1, the cutting mechanism consists of a cutting box 6, a base 7, a laser cutter 8 and a laser generator 9, the cutting box 6 and the base 7 are fixedly connected to one side of the storage box 2, the cutting box 6 is arranged on the top of the base 7, one end of the substrate body 1 bypasses the bottom of the guide shaft 5 and extends to the inside of the cutting box 6, the laser cutter 8 is arranged above the cutting box 6, and the laser generator 9 is installed on the outside of the storage box 2.
[0035] In one aspect of the present embodiment, a capping cover 10 is hingedly installed on the top of the storage box 2, the laser cutter 8 is electrically connected to the laser generator 9, an opening slot 11 is opened on the top of the cutting box 6, and slide rails 12 are installed on both sides of the inner wall of the opening slot 11, the laser cutter 8 is arranged between the two slide rails 12, and sliders 13 are fixedly connected on both sides of the laser cutter 8, and the sliders 13 are slidably connected to the slide rails 12, a baffle plate 14 is hingedly installed on the front of the cutting box 6, a shift handle 15 is fixedly connected to the top of the laser cutter 8, a laser cutting table 16 is arranged on the top of the base 7, and the laser cutting table 16 is arranged directly below the opening slot 11, the cutting box 6 and the capping cover 10 are both made of acrylic transparent material, the storage box 2 and the capping cover 10 are fixed by magnetic suction blocks, the substrate main body 1 is made of a flexible stainless steel belt, and a Mo Nx thin film barrier layer is arranged on the surface of the substrate main body 1.
[0036] Working principle of this utility model:
[0037] Refer to the instruction manual Figure 1-5 When using the utility model, firstly roll up the substrate body 1 on the surface of the carrier shaft 4, then open the capping cover 10, put the substrate body 1 together with the carrier shaft 4 into the storage box 2, and the two ends of the carrier shaft 4 are rotatably connected with the two U-shaped lifting frames 3 respectively, and the carrier shaft 4 is lifted and supported by the U-shaped lifting frames 3, and one end of the substrate body 1 is passed around the bottom of the guide shaft 5 and pulled into the cutting box 6;
[0038] When taking the substrate main body 1, the shielding plate 14 is lifted up, and then the substrate main body 1 is stretched outward. After being pulled out to a specified length, the laser cutter 8 and the laser generator 9 are started, and the laser cutter 8 is pushed by the shift handle 15 to move the laser cutter 8 along the slide rail 12. During the movement of the laser cutter 8, the substrate main body 1 is laser cut on the laser cutting table 16 by the laser beam.
Claims
1. A cutting and unwinding device for a solar cell flexible stainless steel substrate, comprising a substrate body (1), a storage box (2) and a cutting mechanism, Features: Both sides of the inner wall of the storage box (2) are fixedly connected with U-shaped lifting frames (3), and a loading shaft (4) is rotatably connected between the two U-shaped lifting frames (3). The substrate body (1) is rolled up on the surface of the loading shaft (4), and a guide shaft (5) is rotatably connected inside the storage box (2). The guide shaft (5) is arranged directly below the substrate body (1). The cutting mechanism consists of a cutting box (6), a base (7), a laser cutter (8) and a laser generator (9). The cutting box (6) and the base (7) are fixedly connected to one side of the storage box (2), and the cutting box (6) is arranged on the top of the base (7). One end of the substrate body (1) bypasses the bottom of the guide shaft (5) and extends into the inside of the cutting box (6). The laser cutter (8) is arranged above the cutting box (6), and the laser generator (9) is installed on the outside of the storage box (2).
2. The cutting and unwinding device for a solar cell flexible stainless steel substrate according to claim 1, Features: A capping cover (10) is hingedly mounted on the top of the storage box (2), and the laser cutter (8) is electrically connected to the laser generator (9).
3. The cutting and unwinding device for a flexible stainless steel substrate for solar cells according to claim 1, Features: An opening groove (11) is provided on the top of the cutting box (6), and slide rails (12) are installed on both sides of the inner wall of the opening groove (11).
4. The cutting and unwinding device for a flexible stainless steel substrate for solar cells according to claim 3, Features: The laser cutter (8) is arranged between the two slide rails (12), and sliders (13) are fixedly connected to both sides of the laser cutter (8), and the sliders (13) are slidably connected to the slide rails (12).
5. The cutting and unwinding device for a solar cell flexible stainless steel substrate according to claim 1, Features: A shielding plate (14) is hingedly mounted on the front of the cutting box (6), and a shifting handle (15) is fixedly connected to the top of the laser cutter (8).
6. The cutting and unwinding device for a solar cell flexible stainless steel substrate according to claim 3, Features: A laser cutting tabletop (16) is arranged on the top of the base (7), and the laser cutting tabletop (16) is arranged directly below the opening groove (11).
7. The cutting and unwinding device for a solar cell flexible stainless steel substrate according to claim 2, Features: The cutting box (6) and the top cover (10) are both made of transparent acrylic material, and the storage box (2) and the top cover (10) are fixed by adsorption via a magnetic block.
8. The cutting and unwinding device for a solar cell flexible stainless steel substrate according to claim 1, Features: The substrate body (1) is made of a flexible stainless steel strip, and a Mo Nx thin film barrier layer is provided on the surface of the substrate body (1).