Perovskite laminated inkjet printing automatic device

Abstract

The utility model discloses a kind of perovskite laminated inkjet printing automatic equipment, comprising: six big modules of flower basket feeding, telescopic transmission, paper winding platform positioning compensation, inkjet printing, air knife cleaning and discharging recycling, flower basket feeding assembly extracts perovskite battery piece from flower basket by piece;First telescopic transmission line extracts battery piece from flower basket feeding assembly;Feeding transfer assembly temporarily stores battery piece and completes preliminary positioning;Paper winding positioning compensation assembly is connected with feeding transfer assembly;Inkjet assembly sprays perovskite ink to battery piece according to preset path;Air knife component is cleaned after printing to battery piece by blowing;Discharging transfer assembly receives battery piece that printing is completed and is transmitted to discharging station;Second telescopic transmission line recycles finished product battery piece;Flower basket discharging assembly receives finished product battery piece;The technology solves the precision, efficiency and compatibility problem in perovskite laminated battery piece large-scale production, provides key equipment support for photovoltaic industry upgrading.

Description

Technical Field

[0001] This utility model relates to an automatic inkjet printing device, and more particularly to an automatic perovskite stack inkjet printing device. Background Technology

[0002] Perovskite tandem solar cells, as a representative of next-generation photovoltaic technology, have received considerable attention in scientific research and industry in recent years. Their core advantage lies in achieving a wide range of absorption across the solar spectrum through their tandem structure (such as perovskite / crystalline silicon, perovskite / perovskite, etc.), thereby significantly improving photoelectric conversion efficiency. Currently, the laboratory efficiency of single-junction perovskite cells has exceeded 25%, while tandem cells have surpassed 30%, demonstrating the potential to surpass traditional crystalline silicon cells. In terms of materials, perovskite thin films are prepared at low temperatures using solution methods, significantly reducing energy consumption, and different bandgap materials can be flexibly matched through compositional control. However, the long-term stability of perovskite cells remains a major challenge, especially in humid and hot environments where ion migration, phase transitions, and decomposition are prone to occur. To address this, the industry has improved durability through interface passivation, hydrophobic encapsulation, and material modification (such as introducing cesium / formamidinium mixed cations). Some advanced encapsulation technologies have already extended cell life to tens of thousands of hours.

[0003] However, existing perovskite tandem solar cell production equipment suffers from low positioning accuracy, poor material compatibility, insufficient drying efficiency, and fragmented processes, resulting in high production costs and low yield rates for large-scale production, making it difficult to meet the demands of the photovoltaic industry for efficient, stable, and low-cost manufacturing. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and provides an automatic perovskite stack inkjet printing device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automatic perovskite stacked inkjet printing device, comprising: a basket feeding assembly for picking up perovskite solar cells one by one from the basket;

[0006] The first telescopic transmission line is connected to the flower basket feeding assembly and is used to extract the battery cells from the flower basket feeding assembly.

[0007] The feeding transfer component connects to the telescopic transmission line to temporarily store the battery cells and complete the initial positioning.

[0008] The roll paper positioning compensation component, which interfaces with the feeding transfer component, includes:

[0009] Transfer roll paper, used for flexibly supporting battery cells;

[0010] Paper roll motor, used to drive and transport paper rolls;

[0011] DD motors are used to drive the paper roll platform to rotate around an axis to achieve angle compensation;

[0012] A linear motor is used to drive the paper roll platform to translate horizontally for position calibration;

[0013] The camera positioning component is used to collect real-time battery cell position data and feed it back to the DD motor and linear motor;

[0014] The inkjet assembly is connected to the end of the roll paper platform and is used to spray perovskite ink onto the solar cell along a preset path.

[0015] The air knife assembly, arranged in parallel with the inkjet assembly, is used to blow and clean the printed battery cells;

[0016] The unloading transfer unit is used to receive the printed battery cells and transfer them to the unloading station;

[0017] The second telescopic transmission line is connected to the unloading transfer component and is used to recycle the finished battery cells;

[0018] The flower basket feeding assembly receives finished battery cells.

[0019] In a preferred embodiment of this utility model, the first telescopic transmission line is driven by a servo motor to a synchronous belt mechanism, which extracts battery cells one by one from the basket feeding assembly in an intermittent stepping motion, with a transmission speed of 400-600mm / s.

[0020] In a preferred embodiment of this invention, the camera positioning component is perpendicular to the battery cell transmission plane and is directly opposite the detection area of ​​the battery cell positioning mark.

[0021] In a preferred embodiment of this utility model, an elastic buffer pad is provided at the end of the paper roll platform. The elastic buffer pad is made of silicone and has a thickness of 3mm.

[0022] In a preferred embodiment of this invention, the transport roll is made of polyimide film with a thickness of 50-150 μm.

[0023] In a preferred embodiment of this utility model, the inkjet assembly includes: a multi-channel piezoelectric printhead with a nozzle diameter of 20-50μm; an ink heating and temperature control device with a temperature of 25-60℃; and an inkjet path planning system that supports XYZ three-axis linkage control.

[0024] In a preferred embodiment of this utility model, the airflow pressure of the air knife assembly is 0.1-0.3MPa, and the distance between it and the inkjet assembly is 5-15mm.

[0025] In a preferred embodiment of this invention, the surface of the transport roll is coated with a polytetrafluoroethylene coating.

[0026] In a preferred embodiment of the present invention, the roll positioning compensation component further includes tempered glass disposed on the transport roll, the tempered glass having pores for ventilation and adsorption of battery cells.

[0027] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0028] (1) The equipment adopts a closed-loop modular design for the entire process of feeding, conveying, positioning, printing, cleaning and unloading. Each station is seamlessly connected by a telescopic conveyor line. Compared with traditional segmented equipment, the modular structure greatly reduces the manual transfer links, shortens the cycle time to less than 30s / piece, and increases the production capacity by more than 5 times. In particular, the composite design of the roll paper platform and tempered glass, through the flexible transition of the silicone buffer pad, maintains the flexibility of the transmission while using vacuum adsorption to achieve absolute stillness during battery cell printing, solving the contradiction between flexible bearing and rigid positioning, and enabling the positioning accuracy to break through the industry bottleneck of ±5μm.

[0029] (2) The dynamic compensation system constructs a multi-degree-of-freedom compensation matrix by vector synthesis control of DD motor and linear motor combined with camera positioning component. When the cell tilts by ±3° or shifts by ±5mm, the system can complete the joint correction of angle and position within 10ms. Compared with simple mechanical limit or single-axis compensation scheme, the cell efficiency loss caused by stacking misalignment can be reduced from 5% to 0.5%. Compared with the existing technology, this real-time closed-loop control mechanism is particularly suitable for the millimeter-level deformation of perovskite thin film, effectively improving the robustness of the process window.

[0030] (3) The inkjet assembly adopts a deep integration of piezoelectric multi-channel printhead and XYZ three-axis linkage system, and with the ink constant temperature control system, it achieves stable printing in a wide temperature range of 25-60℃. By optimizing the nozzle diameter to 30μm and matching it with a 5kHz printing frequency, the single-channel output efficiency reaches 120ml / h, while the ink droplet volume is controlled at 2-5pL. This reduces the standard deviation of perovskite layer thickness uniformity from 8% in the traditional process to 3%, significantly improving the consistency of the photoelectric conversion efficiency of the battery. The air knife assembly adopts a trapezoidal nozzle and an optimal 8mm blowing distance design to form a laminar air curtain under 0.2MPa air pressure, which can control the ink droplet residue rate to below 0.1%. Compared with the single blowing mode, this pressure-distance combination shortens the drying time to 15s (25℃ environment), avoids the interlayer mutual solubility problem caused by solvent residue, and provides a clean substrate surface for subsequent lamination processes. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0032] Figure 1 This is a perspective structural diagram of a preferred embodiment of the present invention;

[0033] Figure 2 This is a perspective structural diagram of a preferred embodiment of the present invention;

[0034] Figure 3 This is a top view of a preferred embodiment of the present invention;

[0035] In the diagram: 1. Flower basket unloading assembly; 2. Flower basket loading assembly; 3. Second telescopic conveyor line; 4. First telescopic conveyor line; 5. Loading transfer assembly; 6. Unloading transfer assembly; 7. Camera positioning assembly; 8. Roll paper positioning compensation assembly; 9. Inkjet assembly; 10. Roll paper conveyor; 11. Battery cell; 12. Tempered glass; 13. Roll paper motor; 14. DD motor; 15. Linear motor; 16. Air knife assembly. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0037] like Figure 1 and Figure 2 As shown, an automated perovskite stack inkjet printing device includes: a basket feeding assembly 2, used to pick up perovskite solar cells 11 one by one from the basket;

[0038] The first telescopic transmission line 4 is connected to the flower basket feeding assembly 2 and is used to extract the battery cell 11 from the flower basket feeding assembly 2.

[0039] The feeding transfer component 5 is connected to the telescopic transmission line to temporarily store the battery cells 11 and complete the initial positioning.

[0040] The roll paper positioning compensation component 8, which is connected to the feeding transfer component 5, includes:

[0041] The paper roll 10 is used to flexibly support the battery cell 11;

[0042] Paper roll motor 13 is used to drive and transport paper roll 10;

[0043] DD motor 14 is used to drive the paper roll platform to rotate around the axis to achieve angle compensation;

[0044] Linear motor 15 is used to drive the paper roll platform to translate horizontally to achieve position calibration;

[0045] The camera positioning component 7 is used to collect the position data of the battery cell 11 in real time and feed it back to the DD motor 14 and the linear motor 15.

[0046] The inkjet assembly 9 is connected to the end of the roll paper platform and is used to spray perovskite ink onto the battery cell 11 along a preset path.

[0047] The air knife assembly 16 is arranged in parallel with the inkjet assembly 9 and is used to blow and clean the printed battery cell 11.

[0048] The unloading transfer component 6 is used to receive the printed battery cells 11 and transfer them to the unloading station;

[0049] The second telescopic transmission line 3 is connected to the unloading transfer component 6 and is used to recycle the finished battery cell 11.

[0050] Flower basket feeding assembly 1, receiving finished battery cells 11.

[0051] Specifically, the basket loading assembly 2 employs a vacuum suction cup array, a vacuum generator, and a basket adapter. The vacuum suction cup array is arranged in a 12×12 matrix, with suction cup diameters of φ3mm and adjustable spacing (200-400mm). The vacuum generator uses a rotary vane vacuum pump, achieving a vacuum level of -60~-80kPa and a response time ≤0.5s. The basket adapter is equipped with a laser rangefinder sensor, capable of identifying the basket height (±2mm accuracy). It can pick up battery cells 11 one by one, with graded control of vacuum suction.

[0052] More specifically, the material transfer component 6 can be equipped with an RFID reader to read the batch information of the battery cells 11. The finished battery cells 11 are transferred to the unloading position via the second telescopic transmission line 3. After the RFID verification is passed, the battery cells 11 fall freely into the flower basket. When the flower basket is full, an audible and visual alarm can be triggered to prompt manual replacement.

[0053] like Figure 3 As shown, further, the first telescopic transmission line 4 is driven by a servo motor to pull out the battery cells 11 one by one from the basket feeding assembly 2 in an intermittent stepping motion. The transmission speed is 400-600mm / s. During the extraction process, the edge position of the battery cells 11 is detected by a photoelectric sensor.

[0054] Specifically, the telescopic transmission line is driven by a servo motor (400W) driving a synchronous belt mechanism with a transmission ratio of 1:5; the synchronous belt is made of aramid fiber with a tensile strength ≥3000N / mm². 2 The transmission error is ≤0.02mm / m.

[0055] like Figure 2 As shown, the camera positioning component 7 is perpendicular to the transmission plane of the battery cell 11 and is directly opposite the detection area of ​​the battery cell positioning mark.

[0056] Specifically, camera positioning component 7 is for the industrial camera that is set up.

[0057] Furthermore, an elastic buffer pad is provided at the end of the paper roll platform. The elastic buffer pad is made of silicone and is 3mm thick.

[0058] Furthermore, the transport roll 10 is made of polyimide film with a thickness of 50-150 μm.

[0059] Furthermore, the inkjet assembly 9 includes: a multi-channel piezoelectric printhead with a nozzle diameter of 20-50μm; an ink heating and temperature control device with a temperature of 25-60℃; and an inkjet path planning system that supports XYZ three-axis linkage control.

[0060] Specifically, the inkjet assembly 9 parameters are as follows: printhead uses a piezoelectric printhead (multi-channel, φ30μm aperture), printing frequency 10kHz; droplet volume 2-5pL, ink viscosity 1-10mPa·s. The temperature control system includes...

[0061] Heating element: Thin film resistor (power 5W / cm) 2 Temperature control accuracy ±1℃;

[0062] Cooling system: Miniature fan (airflow 2m³ / h) 3 / min), to prevent ink from overheating and carbonizing.

[0063] During path planning, the XYZ three-axis linkage is used: linear motor 15 (thrust 200N) + harmonic reducer (reduction ratio 100); scanning speed 500mm / s, positioning accuracy ±5μm.

[0064] Furthermore, the airflow pressure of the air knife assembly 16 is 0.1-0.3 MPa, and the distance between it and the inkjet assembly 9 is 5-15 mm.

[0065] Specifically, the airflow parameters of the air knife assembly 16 are as follows:

[0066] Air pressure 0.2MPa (adjustable range 0.1-0.3MPa), flow rate 15m³ / h 3 / h;

[0067] Nozzle cross-section: trapezoidal (top base 2mm, bottom base 5mm, height 10mm);

[0068] The distance between the nozzle and the battery cell 11 is 8mm (adjustable via an electric slide with an adjustment accuracy of 0.1mm).

[0069] During cleaning, the cleaning effect is guaranteed to be ≤0.1% of ink droplet residue after purging (verified by a contact angle tester);

[0070] The drying time needs to be ≤15s at 25℃.

[0071] Furthermore, the surface of the transport roll 10 is coated with a polytetrafluoroethylene (PTFE) coating. Specifically, PTFE is a polymer material with extremely strong chemical stability. Its carbon-fluorine bond energy in its molecular structure is extremely high, and it hardly reacts with any known chemical substances (except molten alkali metals and fluorine gas). In this invention, coating the surface of the transport roll 10 with a PTFE coating first solves the problem of the corrosiveness of perovskite ink—perovskite ink typically contains polar solvents (such as DMF, DMSO) and metal ions (such as Pb). 2 These components are prone to swelling or degradation with common polymers (such as polyimide), leading to wrinkling and reduced strength on the surface of the transport paper roll 10. The PTFE coating, however, acts as a physical barrier, isolating the ink from the paper roll substrate, allowing the paper roll to maintain dimensional stability even after prolonged contact with ink.

[0072] Furthermore, the roll paper positioning compensation component 8 also includes tempered glass 12 disposed on the transport roll paper 10, the tempered glass 12 having pores and allowing air to be absorbed by the battery cell 11.

[0073] In use, the first telescopic transmission line 4 extracts a battery cell 11 from the flower basket loading component 2; the loading transfer component 5 receives the battery cell 11, and after the battery cell 11 is in place, the loading transfer component 5 moves to the next station; the roll paper positioning compensation component 8 moves to the receiving position after the loading transfer component 5, the roll paper platform receives the battery cell 11, and after the battery cell 11 is in place, the roll paper positioning compensation component 8 moves to the next station, and after the roll paper positioning compensation component 8 moves to the inkjet component 9, the inkjet component 9 starts inkjet operation and the air knife component 16 starts airflow. During this process, the roll paper positioning compensation component 8 moves at a constant speed to the air knife component 16; the roll paper positioning compensation component 8 returns to the next station, and the roll paper positioning compensation component 8 moves to the unloading position in front of the unloading transfer component 6, the unloading transfer component 6 transmits the battery cell 11 to the telescopic transmission line, and after the battery cell 11 is in place, the second telescopic transmission line 3 moves the battery cell 11 to the flower basket unloading component 1.

[0074] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automated perovskite multilayer inkjet printing device, characterized in that, include: The basket feeding assembly (2) is used to pick up the perovskite solar cells (11) one by one from the basket. The first telescopic transmission line (4) is connected to the flower basket feeding assembly (2) and is used to extract the battery cell (11) from the flower basket feeding assembly (2). The loading transfer component (5) is connected to the telescopic transmission line to temporarily store the battery cells (11) and complete the initial positioning; The roll paper positioning compensation component (8) is connected to the feeding transfer component (5); the roll paper positioning compensation component (8) includes a roll paper platform; The inkjet assembly (9) is connected to the end of the roll paper platform and is used to spray perovskite ink onto the battery cell (11) along a preset path; The air knife assembly (16) is arranged in parallel with the inkjet assembly (9) and is used to blow and clean the printed battery cell (11); The unloading transfer assembly (6) is used to receive the printed battery cells (11) and transfer them to the unloading station; The second telescopic transmission line (3) is connected to the unloading transfer assembly (6) and is used to recycle the finished battery cells (11); Flower basket feeding assembly (1), receiving finished battery cells (11).

2. The automatic perovskite multilayer inkjet printing equipment according to claim 1, characterized in that: The roll paper positioning compensation component (8) includes: Transmission roll paper (10) is used to flexibly support the battery cell (11). A paper roll motor (13) is used to drive the paper roll (10). DD motor (14) is used to drive the paper roll platform to rotate around the axis to achieve angle compensation; A linear motor (15) is used to drive the paper roll platform to translate horizontally to achieve position calibration; The camera positioning component (7) is used to collect the position data of the battery cell (11) in real time and feed it back to the DD motor (14) and the linear motor (15).

3. The automatic perovskite multilayer inkjet printing equipment according to claim 2, characterized in that: The camera positioning component (7) is perpendicular to the transmission plane of the battery cell (11) and is directly opposite to the detection area of ​​the battery cell positioning mark.

4. The automatic perovskite multilayer inkjet printing equipment according to claim 1, characterized in that: The first telescopic transmission line (4) is driven by a servo motor to extract battery cells (11) one by one from the basket feeding assembly (2) in an intermittent stepping motion, with a transmission speed of 400-600 mm / s.

5. The automatic perovskite multilayer inkjet printing equipment according to claim 4, characterized in that: An elastic buffer pad is provided at the end of the paper roll platform. The elastic buffer pad is made of silicone and is 3mm thick.

6. The automatic perovskite multilayer inkjet printing equipment according to claim 2, characterized in that: The transport roll (10) is made of polyimide film with a thickness of 50-150μm.

7. The automatic perovskite multilayer inkjet printing equipment according to claim 1, characterized in that: The inkjet assembly (9) includes: a multi-channel piezoelectric printhead with a nozzle diameter of 20-50μm; an ink heating and temperature control device with a temperature of 25-60℃; and an inkjet path planning system that supports XYZ three-axis linkage control.

8. The automatic perovskite multilayer inkjet printing equipment according to claim 1, characterized in that: The airflow pressure of the air knife assembly (16) is 0.1-0.3 MPa, and the distance between it and the inkjet assembly (9) is 5-15 mm.

9. The automatic perovskite multilayer inkjet printing equipment according to claim 2, characterized in that: The surface of the transport roll (10) is coated with a polytetrafluoroethylene coating.

10. The automatic perovskite multilayer inkjet printing equipment according to claim 1, characterized in that: The roll paper positioning compensation component (8) also includes tempered glass (12) disposed on the transport roll paper (10), the tempered glass (12) having pores and allowing air to be absorbed by the battery cell (11).

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