Battery red-blue composite laser repairing device

Abstract

The utility model provides a kind of battery red blue composite laser repair equipment, comprising: processing moving assembly, including rack, X-axis moving unit, Z-axis moving unit and support;Laser assembly, including blue light laser output unit and infrared laser output unit;Orthographic projection of blue light laser output unit and orthographic projection of infrared laser output unit do not overlap;To-be-processed moving assembly, including stage, Y-axis moving unit for facilitating stage to move along Y-axis direction;Stage is movably arranged below infrared laser output unit, stage is equipped with clamp for fixing perovskite battery.The utility model can comprehensively heat perovskite battery, efficiently remove residual solvent of precursor, cooperate blue light laser output unit to carry out laser heating repair, greatly improve the crystal formation quality of perovskite battery.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to a battery red-blue composite laser repair device. Background Technology

[0002] The high efficiency of perovskite solar cells is closely related to the quality of the photosensitive layer, while a high-quality light-absorbing layer depends on the crystal growth conditions. Annealing is an essential and crucial step in the formation of high-quality crystals; it evaporates the solvent and drives the crystallization of the thin film. Therefore, the annealing method, duration, and temperature during the crystallization process of perovskite crystals have a significant impact on the crystallization quality and crystal structure of the perovskite thin film.

[0003] Traditional perovskite solar cell processing has the following drawbacks;

[0004] 1. Traditional annealing uses a bottom-up heating method, which results in delayed heating of the film surface. This heat transfer direction is opposite to the crystallization direction, which restricts the diffusion of reactants and easily leads to problems such as uneven crystal growth and crystallization defects, ultimately affecting film quality and device efficiency;

[0005] 2. Traditional annealing cannot completely remove residual solvents from the precursor, interfering with the crystallization process and resulting in significant differences in component diffusion.

[0006] 3. Uneven heating: Uneven heating will cause the efficiency of the component to decrease significantly as the area increases. Utility Model Content

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide a red-blue composite laser repair device for perovskite batteries. This device is equipped with an infrared laser output unit that can heat the perovskite battery from top to bottom, enabling comprehensive heating of the perovskite battery, efficiently removing residual solvents from the precursor, and combining with a blue laser output unit for laser heating repair, thereby greatly improving the crystal formation quality of the perovskite battery.

[0008] The embodiments of this utility model are achieved through the following technical solutions:

[0009] A battery red-blue composite laser repair device includes: a processing moving component, including a frame, an X-axis moving unit disposed on the top of the frame, a Z-axis moving unit connected to the moving end of the X-axis moving unit, and a support; a first arm is provided extending horizontally forward from the top of the support, and a second arm is provided extending horizontally forward from the bottom of the support.

[0010] The laser assembly includes a blue laser output unit disposed on the first arm and an infrared laser output unit disposed on the second arm; the orthographic projection of the blue laser output unit and the orthographic projection of the infrared laser output unit do not overlap; the infrared laser output unit is a vertical cavity surface emitter laser.

[0011] The moving component to be processed includes a stage and a Y-axis moving unit for moving the stage along the Y-axis direction; the stage is movably disposed below the infrared laser output unit, and the stage is provided with a clamp for fixing the perovskite cell.

[0012] According to a preferred embodiment, the length of the first arm is greater than the length of the second arm.

[0013] According to a preferred embodiment, it also includes a temperature measuring unit;

[0014] The temperature measuring unit is located on one side of the platform.

[0015] According to a preferred embodiment, the system further includes a transfer plate disposed at the bottom of the platform, the transfer plate having a heating structure inside.

[0016] According to a preferred embodiment, a thermocouple is also provided inside the adapter plate.

[0017] According to a preferred embodiment, a turntable is provided at the bottom of the platform, the turntable is disposed on the moving end of the Y-axis moving unit, and the rotating end of the turntable is connected to the adapter plate.

[0018] A method for repairing batteries using red-blue composite lasers includes the following steps:

[0019] Step S10: Fix the perovskite cell using a clamp; use a heat-generating adapter plate to heat the perovskite cell, causing the stage to provide auxiliary heating.

[0020] Step S20: Thermocouples are used to test the temperature of each area of ​​the stage to obtain temperature data of the stage area.

[0021] Step S30: The infrared laser output unit anneals and heats the perovskite solar cell as a whole for a heating time of T1.

[0022] Step S40: The thermal imager performs temperature tests on the surface of various regions of the perovskite solar cell to obtain perovskite surface temperature data.

[0023] Step S50: Based on the temperature data of the stage area and the temperature data of the perovskite surface, the annealing heating power of the infrared laser output unit is adjusted in real time using a temperature measuring instrument to detect the temperature.

[0024] Step S60: The blue laser output unit outputs a laser beam to repair the perovskite solar cell in a specific area. The processing time is T2.

[0025] Step S70: Check whether the perovskite solar cell has been repaired. If the repair test result is satisfactory, end step S60 to obtain the finished perovskite solar cell. If the repair test result is unsatisfactory, repeat step S60 until the repair test result is satisfactory.

[0026] According to a preferred embodiment, the wavelength range of the infrared laser output unit is 800-1064nm;

[0027] The wavelength range of the blue laser output unit is 440-460nm.

[0028] According to a preferred embodiment, the annealing temperature does not exceed 200°C.

[0029] According to a preferred embodiment, the time of T1 is 1-3 seconds.

[0030] According to a preferred embodiment, the repair detection result is determined based on the lattice changes of the perovskite solar cell.

[0031] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0032] This invention features an infrared laser output unit that can heat from top to bottom, resulting in high heating efficiency. The heat transfer direction is the same as the crystallization direction, promoting the diffusion of reactants and providing comprehensive and uniform heating for the perovskite solar cell. It also efficiently removes residual solvents from the precursor and, in conjunction with a blue laser output unit, performs laser heating repair, greatly improving the crystal formation quality of the perovskite solar cell.

[0033] The orthographic projection of the blue laser output unit does not overlap with the orthographic projection of the infrared laser output unit, ensuring that the blue laser output unit can flexibly switch between processing perovskite cells and the infrared laser output unit. The switching between red and blue laser processing can be achieved by driving the Y-axis moving unit. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the structure of a battery red-blue composite laser repair device provided in this embodiment of the present invention;

[0036] Figure 2 A side view of a battery red-blue composite laser repair device provided in this embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the platform provided in an embodiment of this utility model;

[0038] Figure 4 This is another three-dimensional structural schematic diagram of a battery red-blue composite laser repair device provided for an embodiment of the present utility model.

[0039] Icons: 1. Frame; 2. X-axis moving unit; 3. Z-axis moving unit; 4. Support; 5. First arm; 6. Second arm; 7. Infrared laser output unit; 8. Blue laser output unit; 9. Stage; 10. Y-axis moving unit; 11. Fixture; 12. Temperature measuring unit; 121. Thermal imager; 122. Thermometer; 13. Adapter plate; 14. Heating structure; 15. Thermocouple; 16. Turntable. Detailed Implementation

[0040] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0041] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 utility model.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0043] Example

[0044] Please refer to Figures 1 to 4A battery red-blue composite laser repair device includes: a processing moving component, including a frame 1, an X-axis moving unit 2 disposed on the top of the frame 1, a Z-axis moving unit 3 connected to the moving end of the X-axis moving unit 2, and a support 4; a first arm 5 is provided horizontally extending forward from the top of the support 4, and a second arm 6 is provided horizontally extending forward from the bottom of the support 4; a laser component, including a blue laser output unit 8 disposed on the first arm 5 and an infrared laser output unit 7 disposed on the second arm 6; the orthographic projection of the blue laser output unit 8 and the orthographic projection of the infrared laser output unit 7 do not overlap; the infrared laser output unit 7 is a vertical cavity surface emitter laser; a moving component to be processed, including a stage 9 and a Y-axis moving unit 10 for moving the stage 9 along the Y-axis direction; the stage 9 is movably disposed below the infrared laser output unit 7, and the stage 9 is provided with a clamp 11 for fixing the perovskite battery.

[0045] Preferably, the length of the first arm 5 is greater than the length of the second arm 6.

[0046] Preferably, it also includes a temperature measuring unit 12;

[0047] Temperature measuring unit 12 is located on one side of stage 9.

[0048] Preferably, it also includes an adapter plate 13 disposed at the bottom of the platform 9, and the adapter plate 13 is provided with a heating structure 14 inside.

[0049] Preferably, a thermocouple 15 is also provided inside the adapter plate 13.

[0050] Preferably, a turntable 16 is provided at the bottom of the platform 9. The turntable 16 is located on the moving end of the Y-axis moving unit 10, and the rotating end of the turntable 16 is connected to the adapter plate 13.

[0051] A method for repairing batteries using red-blue composite lasers includes the following steps:

[0052] In step S10, the perovskite cell is fixed using the clamp 11; the heat generated by the adapter plate 13 with the heating structure 14 causes the stage 9 to provide auxiliary heating to the perovskite cell.

[0053] Step S20: Thermocouple 15 performs temperature tests on each area of ​​stage 9 to obtain temperature data of each area of ​​stage 9.

[0054] Step S30: The infrared laser output unit 7 performs overall annealing heating on the perovskite solar cell for a heating time of T1.

[0055] In step S40, the thermal imager 121 performs temperature tests on the surface of various regions of the perovskite solar cell to obtain perovskite surface temperature data.

[0056] Step S50: Based on the temperature data of the stage 9 area and the temperature data of the perovskite surface, the annealing heating power of the infrared laser output unit 7 is adjusted in real time by using the temperature measuring instrument 122 to detect the temperature.

[0057] Step S60: Blue laser output unit 8 outputs a laser beam to repair areas of the perovskite solar cell. The processing time is T2.

[0058] Step S70: Check whether the perovskite solar cell has been repaired. If the repair test result is satisfactory, end step S60 to obtain the finished perovskite solar cell. If the repair test result is unsatisfactory, repeat step S60 until the repair test result is satisfactory.

[0059] Preferably, the wavelength range of the infrared laser output unit 7 is 800-1064nm;

[0060] The wavelength range of the blue laser output unit 8 is 440-460nm.

[0061] Preferably, the annealing temperature does not exceed 200°C.

[0062] Preferably, the time T1 is 1-3 seconds.

[0063] Preferably, the repair test results are determined based on the lattice changes of the perovskite solar cell.

[0064] The working principle of this utility model:

[0065] This invention is equipped with an infrared laser output unit 7 that can heat from top to bottom, which can comprehensively heat the perovskite solar cell, efficiently remove residual solvent from the precursor, and, together with the blue laser output unit 8, perform laser heating repair, greatly improving the crystal formation quality of the perovskite solar cell.

[0066] The orthographic projection of the blue laser output unit 8 and the orthographic projection of the infrared laser output unit 7 do not overlap, ensuring flexible switching between the processing of perovskite cells by the blue laser output unit 8 and the processing of perovskite cells by the infrared laser output unit 7. This switching between red and blue laser processing can be achieved by driving the Y-axis movement unit 10. In this embodiment, the length of the first arm 5 is greater than the length of the second arm 6. Since the blue laser output unit 8 is located at the end of the first arm 5, and the infrared laser output unit 7 is located at the end of the second arm 6, the laser beams output by the blue laser output unit 8 and the infrared laser output unit 7 do not overlap, ensuring that the blue laser beams and infrared laser beams do not interfere with each other and can cooperate, avoiding interference with the processing effect. Similarly, the length of the second arm 6 can also be greater than that of the first arm 5.

[0067] In this embodiment, the X-axis moving unit 2 can cause the Z-axis moving unit 3 and the support 4 to move together along the X-axis direction, and the Z-axis moving unit 3 can cause the support 4 to move along the Z-axis direction, which is the vertical direction; specifically, please refer to the appendix. Figure 1 , Figure 2 The appendix Figure 1 The Z-axis direction, as indicated in the diagram, is the vertical direction (up and down); the X-axis direction is the horizontal direction (front and back); and the Y-axis direction is the horizontal direction (left and right). X-axis movement unit 2, Y-axis movement unit 10, and Z-axis movement unit 3 can all be selected from linear modules, cylinders, or other movable drive structures.

[0068] The infrared laser output unit 7 is a vertical-cavity surface-emitting laser (VCSEL). This unit has an LED chip and can perform surface heating of the area, ensuring heating uniformity. The thermal imager 121 can test the temperature of the perovskite solar cell, and the temperature controller can adjust the power of the VCSEL to ensure uniform temperature in each area. Whether the perovskite solar cell repair is complete can be determined by observing the lattice size under an electron microscope, thus judging whether the repair test result is satisfactory or unsatisfactory. The blue laser output unit 8 can select a 450nm blue laser, and the infrared laser output unit 7 can select a 940nm VCSEL. Furthermore, the blue laser output unit 8 and the infrared laser output unit 7 can be cooled separately using shunts, such as... Figure 4 As shown, it is not indicated by reference numerals in this embodiment. The infrared laser output unit 7 is a vertical-cavity surface-emitting laser (VCSEL), which can radiate a high-energy-density laser beam (several J / cm²) in a short time (tens to hundreds of nanoseconds) with low energy consumption. It can perform low-temperature treatment, rapid heating, uniform heating, and bulk heating of perovskite solar cell films, achieving a photoelectric conversion efficiency of over 20% and good stability. In this embodiment, a VCSEL is used to perform laser annealing on the perovskite solar cell film. The photoluminescence intensity of the laser-annealed perovskite solar cell film is more than three times higher than that of the thermally annealed perovskite solar cell film. It can control the crystallization of the perovskite solar cell film with high quality. The average grain size of the perovskite solar cell film after laser annealing is significantly larger than that of the perovskite solar cell film treated by heat treatment.

[0069] This embodiment describes a laser-repair process for perovskite solar cells, involving laser annealing. Laser annealing removes residual solvents, which are typically added during perovskite cell fabrication to improve solubility and crystallinity. The infrared laser output unit 7 performs laser annealing on the perovskite cells, removing these residual solvents and improving performance and stability. Furthermore, it stabilizes the crystal structure of the perovskite cells. Perovskite materials exhibit various crystal structures, each affecting cell performance. The high temperature during laser annealing promotes crystal rearrangement and stabilization, further enhancing cell performance and stability. It also improves electron mobility, which affects photoelectric efficiency. As temperature increases during laser annealing, electron mobility improves, thus increasing cell efficiency. This embodiment also eliminates impurities and improves crystal quality. Laser annealing removes impurities from the perovskite cells, particularly those other than oxides, improving crystal quality. Finally, it allows for adjustment of crystallinity and morphology, improving photoelectric conversion efficiency. Improved stability and durability: Laser annealing helps improve the stability and durability of perovskite solar cells, extending their lifespan. Promoted formation and growth of perovskite solar cell thin films: Laser annealing facilitates the formation of perovskite solar cell thin films, allowing for the rational control of film growth through nucleation and growth stages.

[0070] In this embodiment, the temperature measuring unit 12 includes an infrared thermal imager (hereinafter referred to as thermal imager 121) and a temperature detector. The temperature detector and the infrared thermal imager work together. The infrared thermal imager detects the temperature of the perovskite solar cell, and the temperature detector uses temperature feedback to adjust the laser power, providing real-time feedback to ensure consistent surface temperature. In this embodiment, other laser components (such as green laser beams) can also be selected for processing. This embodiment uses both infrared and blue laser beams for laser annealing and repair; alternatively, blue laser beams can be used for annealing and repair, with various combinations possible. The repair time for blue laser beam repair is adjusted according to actual needs; the blue laser repair time (processing time of blue laser output unit 8) is T2. The perovskite layer of the perovskite solar cell has high absorption characteristics, used for local defect repair. The blue laser output unit 8 can rapidly heat up (reaching 120-150 degrees Celsius within 1-3 seconds), precisely controlling the heat-affected zone.

[0071] The adapter plate 13 with heating structure 14 heats up, prompting the stage 9 to provide auxiliary heating for the perovskite cell, thereby improving the efficiency of laser annealing of the perovskite cell and enabling rapid temperature rise. Since the infrared laser output unit 7 performs laser annealing from top to bottom, the adapter plate 13 heats the stage 9 through heat transfer, thereby heating the perovskite cell from bottom to top, greatly improving heating efficiency and ensuring uniform heating.

[0072] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A battery red-blue composite laser repair device, characterized in that, include: The processing moving assembly includes a frame, an X-axis moving unit disposed on the top of the frame, a Z-axis moving unit connected to the moving end of the X-axis moving unit, and a support; a first arm extends horizontally forward from the top of the support, and a second arm extends horizontally forward from the bottom of the support. The laser assembly includes a blue laser output unit disposed on the first arm and an infrared laser output unit disposed on the second arm; the orthographic projection of the blue laser output unit and the orthographic projection of the infrared laser output unit do not overlap; the infrared laser output unit is a vertical cavity surface emitter laser. The moving component to be processed includes a stage and a Y-axis moving unit for moving the stage along the Y-axis direction; the stage is movably disposed below the infrared laser output unit, and the stage is provided with a clamp for fixing the perovskite cell.

2. The battery red-blue composite laser repair device according to claim 1, characterized in that, The length of the first arm is greater than the length of the second arm.

3. The battery red-blue composite laser repair device according to claim 1, characterized in that, It also includes a temperature measuring unit; The temperature measuring unit is located on one side of the platform.

4. The battery red-blue composite laser repair device according to claim 1, characterized in that, It also includes a transfer plate disposed at the bottom of the platform, and the transfer plate has a heating structure inside.

5. The battery red-blue composite laser repair device according to claim 4, characterized in that, The adapter plate is also equipped with a thermocouple.

6. The battery red-blue composite laser repair device according to claim 5, characterized in that, A turntable is provided at the bottom of the platform, and the turntable is located on the moving end of the Y-axis moving unit. The rotating end of the turntable is connected to the adapter plate.

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