Device for physically passivating perovskite solar cell module

Abstract

The utility model discloses a device for physically passivating a perovskite solar cell module. The device comprises a transmission device, a defect acquisition module, a laser device, a dust removal module and a coating device, a plurality of limiting assemblies are evenly arranged on the conveying plate, and battery assemblies are arranged in the limiting assemblies in a limited mode. The transmission plate above the chain wheel transmission machine is a working area; the defect collection module, the laser device and the dust removal module are sequentially arranged in the first machine body, and the transmission device penetrates through the first machine body; the coating device is arranged at the discharging end of the transmission device, the discharging device is arranged between the discharging end of the transmission device and a feeding plate of the coating machine, defects caused by pinholes or particles are directly removed through laser dotting, then holes are filled with coating films, and the problem that the efficiency is reduced due to large-area perovskite pinholes is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell passivation, in particular to a device for physically passivating a perovskite solar cell assembly. Background Art

[0002] The efficiency of small-area perovskite solar cells has exceeded 26% (0.1 cm 2 ), while the efficiency of commercial large-area perovskite solar cells reported publicly is 19.2%. The efficiency difference between large-area and small-area perovskite solar cells is at least 7 percentage points. The main reasons for the large efficiency gap are the uniformity of the perovskite film, the inevitable pinhole defects in the crystallization process of the perovskite film, and the particle defects caused by falling dust (even in a 100-level clean room there will be dust). Pinhole defects will cause the back electrode to connect to the front electrode through the pinhole, causing a short circuit or forming a space charge effect, which directly leads to a decrease in battery efficiency, and particle defects will cause leakage at this position. These two types of defects are the main reasons why the efficiency of large-area battery modules is much lower than that of small-area battery modules. There is currently no way to solve this defect. Utility Model Content

[0003] The utility model aims to provide a device for physically passivating a perovskite solar cell assembly in view of the deficiencies of the prior art.

[0004] The technical solution of the utility model to solve the above problems is: a device for physically passivating a perovskite solar cell assembly, comprising a transmission device, a defect collection module, a laser device, a dust removal module and a coating device;

[0005] The transmission device includes a sprocket conveyor, and a plurality of transmission plates are evenly arranged between the chains of the sprocket conveyor, and the transmission plates are made of transparent material. A plurality of limit assemblies are evenly arranged on the transmission plates, and the battery assembly limit is set in the limit assemblies;

[0006] The transmission plate above the sprocket conveyor is the working area;

[0007] The defect collection module, laser device, and dust removal module are sequentially arranged in the first body, and the transmission device is arranged through the first body; the coating device is arranged at the unloading end of the transmission device, and an inclined feeding plate is provided at the inlet of the coating machine, and a unloading device is provided between the unloading end of the transmission device and the feeding plate of the coating machine.

[0008] Furthermore, the defect collection module includes a pinhole defect collection device and a particle defect collection device.

[0009] Furthermore, the pinhole defect collection device includes a backlight panel and an optical camera. The backlight panel is arranged below the working area, and the optical camera is arranged above the working area and is located directly above the backlight panel.

[0010] Furthermore, the particle defect collection device includes an EL power supply and a near-infrared camera. The near-infrared camera is arranged above the working area. The EL power supply is provided with a positive electrode interface and a negative electrode interface. The positive electrode interface and the negative electrode interface are respectively telescopically arranged on both sides of the working area through a first cylinder. The first cylinder is fixedly arranged on the inner wall of the first body.

[0011] Furthermore, the dust removal module includes a dust suction device and a dust blowing device, the dust blowing device includes a dust blowing fan and two dust blowing pipes, the two dust blowing pipes are respectively arranged on both sides of the working area, and the two dust blowing pipes are respectively connected to the dust blowing fans through pipes; the dust suction device includes a dust suction hood and a dust suction fan, the dust suction hood is connected to the dust suction fan through a pipe, and the dust suction hood is arranged directly above the working area.

[0012] Furthermore, the unloading device includes a first top plate, a plurality of second cylinders, a suction cup base and a plurality of vacuum suction cups, the first top plate is connected to the frame through an adjusting mechanism, the tops of the plurality of second cylinders are fixedly connected to the first top plate, the suction cup base is connected to the telescopic end of the second cylinder, and a plurality of vacuum suction cups are evenly arranged on the suction cup base.

[0013] Furthermore, the two ends of the adjusting screw are rotatably connected to the two mounting seats through bearings, one end of the adjusting screw is connected to the output shaft of the adjusting motor, the two ends of the guide rod are respectively fixedly connected to the two mounting seats, and a screw-on part and a sliding part are provided on the first top plate, the screw-on part is screwed on the adjusting screw, and the sliding part is slidably sleeved on the guide rod.

[0014] The utility model has beneficial effects:

[0015] The utility model provides a device for physically passivating a perovskite solar cell assembly, which directly removes defects caused by pinholes or particles by laser dotting, and then fills the holes with a coating, thereby solving the problem of reduced efficiency caused by large-area perovskite pinholes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the positive electrode interface and the negative electrode interface;

[0018] Figure 3 It is a schematic diagram of the structure of the dust blowing pipe;

[0019] Figure 4It is a structural schematic diagram of the unloading device;

[0020] In the figure: 1-sprocket conveyor, 2-transmission plate, 3-limiting assembly, 4-working area, 5-first body, 6-partition, 7-backlight plate, 8-optical camera, 9-EL power supply, 10-near infrared camera, 11-positive electrode interface, 12-negative electrode interface, 13-first cylinder, 14-dust blowing pipe, 15-dust hood, 16-coating machine, 17-feeding plate, 18-unloading device, 19-first top plate, 20-second cylinder, 21-suction cup base, 22-vacuum suction cup, 23-adjustment mechanism, 24-laser device. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] As shown in the figure, a device for physically passivating a perovskite solar cell module includes a transmission device, a defect collection module, a laser device, a dust removal module, and a coating device;

[0023] The transmission device includes a sprocket conveyor, and a plurality of transmission plates are evenly arranged between the chains of the sprocket conveyor, and the transmission plates are made of transparent material. A plurality of limit assemblies are evenly arranged on the transmission plates, and the battery assembly limit is set in the limit assemblies. The transmission plate above the sprocket conveyor is a working area.

[0024] The defect collection module, the laser device, and the dust removal module are sequentially arranged in the first body. The transmission device is arranged through the first body, and a partition is provided between the defect collection module and the laser device to prevent the light of the laser device from affecting the image collection of the defect collection module.

[0025] The defect collection module includes a pinhole defect collection device and a particle defect collection device. The pinhole defect collection device includes a backlight panel and an optical camera. The backlight panel is arranged below the working area. The optical camera is arranged above the working area and is located directly above the backlight panel. The particle defect collection device includes an EL power supply and a near-infrared camera. The near-infrared camera is arranged above the working area. The EL power supply is provided with a positive electrode interface and a negative electrode interface. The positive electrode interface and the negative electrode interface are respectively arranged on both sides of the working area through a first cylinder, and the first cylinder is fixedly arranged on the inner wall of the first body. The laser device is arranged above the working area. The dust removal module includes a dust suction device and a dust blowing device. The dust blowing device includes a dust blowing fan and two dust blowing pipes. The two dust blowing pipes are respectively arranged on both sides of the working area. The two dust blowing pipes are respectively connected to the dust blowing fan through pipes. The dust suction device includes a dust suction hood and a dust suction fan. The dust suction hood is connected to the dust suction fan through a pipe, and the dust suction hood is arranged directly above the working area.

[0026] The coating device includes a coating machine, an inclined feed plate is provided at the inlet of the coating machine, a unloading device is provided between the unloading end of the transmission device and the feed plate of the coating machine, the unloading device includes a first top plate, a plurality of second cylinders, a suction cup base and a plurality of vacuum suction cups, the first top plate is connected to the frame through an adjusting mechanism, the tops of the plurality of second cylinders are fixedly connected to the first top plate, the suction cup base is connected to the telescopic end of the second cylinder, a plurality of vacuum suction cups are evenly arranged on the suction cup base, the adjusting mechanism includes two mounting seats, an adjusting screw and a guide rod, both ends of the adjusting screw are rotatably connected to the two mounting seats through bearings, one end of the adjusting screw is connected to the output shaft of the adjusting motor, and both ends of the guide rod are respectively fixedly connected to the two mounting seats, a screw-on part and a sliding part are provided on the first top plate, the screw-on part is screwed on the adjusting screw, and the sliding part is slidably sleeved on the guide rod.

[0027] The battery components are sequentially passed through the defect collection module to collect defect information, the laser device for laser marking and dust removal, and then the unloading device transports the battery components from the transmission device to the coating machine, where the electrodes are first led out and the bus bars are bonded, and then the coating is carried out.

[0028] A method for physically passivating a perovskite solar cell assembly comprises the following steps:

[0029] Step 1, collect defects of the battery assembly, turn on the backlight panel, and under the illumination of the backlight panel, the pinholes of the battery assembly are transparent, and the image is collected by an optical camera, and the position of the pinhole defect is determined by image recognition; the EL power supply applies a constant voltage to the battery assembly, and then the image is collected by a near-infrared camera, and the position of the particle defect is determined by image recognition;

[0030] Step 2: laser dotting is performed according to the determined positions of the pinhole defects and particle defects. The laser device performs laser dotting, and the laser dotting surrounds the pinholes or particles to ensure that the defective spots are removed;

[0031] Step 3, a dust removal device removes dust from the battery assembly after laser dotting;

[0032] Step 4, first lead out the electrodes of the battery assembly after dust removal, attach the busbars, and then coat it; the coating is prepared by evaporation of parylene, or by ALD to prepare an aluminum oxide film to fill the holes.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A device for physically passivating a perovskite solar cell module, characterized in that: It includes a transmission device, a defect collection module, a laser device, a dust removal module and a coating device; The transmission device comprises a sprocket conveyor, a plurality of transmission plates are evenly arranged between the chains of the sprocket conveyor, and the transmission plates are made of transparent material; a plurality of limit assemblies are evenly arranged on the transmission plates, and the battery assembly limit is set in the limit assemblies; The transmission plate above the sprocket conveyor is the working area; The defect collection module, laser device and dust removal module are sequentially arranged in the first body, and the transmission device is arranged through the first body; the coating device is arranged at the unloading end of the transmission device, and the coating device includes a coating machine, and an inclined feeding plate is arranged at the inlet of the coating machine, and a unloading device is arranged between the unloading end of the transmission device and the feeding plate of the coating machine.

2. A device for physically passivating a perovskite solar cell assembly as claimed in claim 1, characterized in that: The defect collection module includes a pinhole defect collection device and a particle defect collection device.

3. A device for physically passivating a perovskite solar cell assembly as claimed in claim 2, characterized in that: The pinhole defect collection device comprises a backlight plate and an optical camera. The backlight plate is arranged below a working area, and the optical camera is arranged above the working area and is located directly above the backlight plate.

4. A device for physically passivating a perovskite solar cell assembly as claimed in claim 2, characterized in that: The particle defect collection device includes an EL power supply and a near-infrared camera. The near-infrared camera is arranged above the working area. The EL power supply is provided with a positive electrode interface and a negative electrode interface. The positive electrode interface and the negative electrode interface are respectively telescopically arranged on both sides of the working area through a first cylinder. The first cylinder is fixedly arranged on the inner wall of the first body.

5. A device for physically passivating a perovskite solar cell assembly as claimed in claim 1, characterized in that: The dust removal module includes a dust suction device and a dust blowing device. The dust blowing device includes a dust blowing fan and two dust blowing pipes. The two dust blowing pipes are respectively arranged on both sides of the working area, and the two dust blowing pipes are respectively connected to the dust blowing fans through pipes; the dust suction device includes a dust suction hood and a dust suction fan. The dust suction hood is connected to the dust suction fan through a pipe, and the dust suction hood is arranged directly above the working area.

6. A device for physically passivating a perovskite solar cell assembly as claimed in claim 1, characterized in that: The unloading device includes a first top plate, a plurality of second cylinders, a suction cup base and a plurality of vacuum suction cups. The first top plate is connected to the frame through an adjusting mechanism, the tops of the plurality of second cylinders are fixedly connected to the first top plate, the suction cup base is connected to the telescopic end of the second cylinder, and the plurality of vacuum suction cups are evenly arranged on the suction cup base.

7. A device for physically passivating a perovskite solar cell assembly as claimed in claim 6, characterized in that: The adjustment mechanism includes two mounting seats, an adjusting screw, and a guide rod. The two ends of the adjusting screw are rotatably connected to the two mounting seats through bearings. One end of the adjusting screw is connected to the output shaft of the adjusting motor. The two ends of the guide rod are respectively fixedly connected to the two mounting seats. A screw-on part and a sliding part are provided on the first top plate. The screw-on part is screwed on the adjusting screw, and the sliding part is slidably sleeved on the guide rod.

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