A high-efficiency drying groove for a texturing process of a photovoltaic panel

Abstract

The utility model discloses a kind of high-efficiency drying tank of photovoltaic panel texturing process, including air blower, air blower is connected in groove body side portion by pipeline, heating bag and efficient filter are connected on pipeline, and the bottom of groove body is connected with several heating plates, and gap is left between heating plate;Heating plate includes two pieces of heat-resistant glass, heat-resistant glass is connected on the frame of stainless steel, frame is connected on support;Gap is left between the heat-resistant glass, and several infrared heating pipes are installed at gap portion.Compared with prior art, the utility model is additionally provided with heating plate at the bottom of groove body, to quickly supplement heat energy in groove body, improve the drying effect and drying efficiency of silicon wafer, improve the problem that product is not suitable for drying near the bottom of drying tank.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic panel manufacturing technology, and in particular to a high-efficiency drying tank for the photovoltaic panel texturing process. Background Technology

[0002] The main material used to manufacture solar photovoltaic panels is semiconductor silicon wafers. They are made through a series of processes, including texturing, diffusion, etching, cleaning the silicon wafer surface, anti-reflective coating, and printing and sintering. During the processing, the surface of the silicon wafer needs to be etched with acid to form a uniform texture, in order to increase the absorption of sunlight, reduce reflection, increase the PN junction area, and thus improve the photoelectric conversion efficiency of the cell. This step is called texturing and is the first step in the overall processing. The effect of silicon wafer texturing is related to the subsequent processing and the quality of the finished solar photovoltaic panel.

[0003] Currently, wet trough-type flocking technology is widely used in the industry. Its advantages include high capacity, low cost, and good flocking consistency. However, in traditional drying troughs, hot air enters from the side of the trough, which is not effective for drying products near the bottom of the trough. To ensure product drying, the drying process time needs to be extended. Utility Model Content

[0004] The purpose of this utility model is to provide a high-efficiency drying tank for the texturing process of photovoltaic panels. By adding a heating plate at the bottom of the tank, heat energy can be quickly replenished to the tank, thereby improving the drying effect and efficiency of silicon wafers and solving the problem that products near the bottom of the drying tank are not suitable for drying.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency drying tank for photovoltaic panel texturing process includes a blower connected to the side of the tank body via a pipe. A heating pack and a high-efficiency filter are connected to the pipe, and several heating plates are connected to the bottom of the tank body with gaps between them.

[0006] A further improvement of this utility model is that two blowers are arranged side by side, and the two blowers are respectively connected to the side of the tank through two pipes.

[0007] A further improvement of this utility model is that the filter is a diaphragmless filter, and the filter media of the diaphragmless filter is U15PTFE.

[0008] A further improvement of this utility model is that the heating pack is a PTC heater.

[0009] A further improvement of this utility model is that a support is connected to the bottom of the tank, and the heating plate is suspended and connected to the support.

[0010] A further improvement of this utility model is that the heating plate includes two pieces of heat-resistant glass, which are connected to a stainless steel frame, and the frame is connected to a support; a gap is left between the heat-resistant glass pieces, and several infrared heating tubes are installed in the gap.

[0011] A further improvement of this utility model is that the heating plate is 3-5cm away from the bottom of the tank, preferably 4cm.

[0012] A further improvement of this utility model is that a thermocouple is installed on the inner wall of the tank.

[0013] A further improvement of this utility model is that the upper surface of the heating plate on the side wall and bottom of the tank is coated with a Teflon coating.

[0014] The beneficial effects of this utility model are: This utility model discloses a high-efficiency drying tank for the photovoltaic panel texturing process. By adding a heating plate at the bottom of the tank, heat energy is quickly replenished to the tank, improving the drying effect and efficiency of silicon wafers, shortening the drying process time by 50%, and significantly reducing energy consumption.

[0015] This utility model provides a high-efficiency drying tank for the photovoltaic panel texturing process. The inner wall of the tank is equipped with thermocouples, which can monitor the temperature inside the tank in real time. When the temperature inside the tank exceeds 120°C, heating is stopped, thus providing high-temperature protection.

[0016] The high-efficiency drying tank for the photovoltaic panel texturing process of this utility model has a Teflon coating on the upper surface of the heating plate on the side wall and bottom of the tank, which ensures the cleanliness of the entire tank device, prevents dirt from being caused to the processed products, and ensures the yield rate of the products. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a cross-sectional view of the heating plate of this utility model.

[0019] In the diagram: 1-Blower, 2-Pipe, 3-Tank, 301-Support, 4-Heating Pack, 5-Filter, 6-Heating Plate, 601-Heat-resistant Glass, 602-Frame, 603-Infrared Heating Tube. Detailed Implementation

[0020] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1: As Figures 1-2As shown, a high-efficiency drying tank for photovoltaic panel texturing process includes a blower 1, which is connected to the side of the tank body 3 through a pipe 2. A heating pack 4 and a filter 5 are connected to the pipe 2, and several heating plates 6 are connected to the bottom of the tank body 3, with gaps between the heating plates 6.

[0022] There are two blowers 1 arranged side by side, and the two blowers 1 are respectively connected to the side of the tank body 3 through two pipes 2.

[0023] Filter 5 is a diaphragmless filter, and the filter media for the diaphragmless filter is U15PTFE.

[0024] Heating pack 4 is a PTC heater.

[0025] The bottom of the tank 3 is connected to a support 301, and the heating plate 6 is suspended and connected to the support 301.

[0026] The heating plate 6 includes two heat-resistant glass pieces 601, which are connected to a stainless steel frame 602. The frame 602 is connected to a support 301. There is a gap between the heat-resistant glass pieces 601, and several infrared heating tubes 603 are installed in the gap.

[0027] The heating plate 6 is 4cm away from the bottom of the tank 3.

[0028] Thermocouples are installed on the inner wall of tank 3.

[0029] Example 2: This example is a further improvement on Example 1. The main improvement is that, in Example 1, the product would be contaminated by dirt inside the tank 3 during use; however, in this example, the above-mentioned defect can be avoided. Specifically: The upper surface of the heating plate 6 on the side wall and bottom of the tank 3 is coated with Teflon coating. In this embodiment, the upper surface of the heating plate 6 on the side wall and bottom of the tank 3 is coated with Teflon coating to ensure the cleanliness of the entire tank 3 device, prevent the processing products from getting dirty, and ensure the product yield.

[0030] Apart from the above, this embodiment is exactly the same as Embodiment 1, and will not be described again here.

[0031] The specific working principle of this utility model is as follows: Blower 1, heating pack 4, infrared heating tube 603 and thermocouple are all electrically connected to the controller of the photovoltaic panel processing machine.

[0032] During operation, blower 1 blows hot air into the tank 3, while infrared heating tube 603 supplements the heat, improving the drying effect and efficiency of the silicon wafers, shortening the drying process time by 50%, and significantly reducing energy consumption. When the thermocouple detects that the internal temperature of the tank 3 exceeds 120°C, the heating pack 4 and infrared heating tube 603 stop working, providing high-temperature protection. Furthermore, the heating plates 6 on the side walls and bottom of the tank 3 are coated with a Teflon coating to ensure the cleanliness of the entire tank 3 system, preventing contamination of the processed products and guaranteeing a high product yield.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-efficiency drying tank for the photovoltaic panel texturing process, characterized in that: Includes a blower (1), which is connected to the side of the tank (3) via a pipe (2). A heating pack (4) and a filter (5) are connected to the pipe (2), and several heating plates (6) are connected to the bottom of the tank (3), with gaps between the heating plates (6).

2. The high-efficiency drying tank for the photovoltaic panel texturing process as described in claim 1, characterized in that: The blowers (1) are two arranged side by side, and the two blowers (1) are respectively connected to the side of the tank (3) through two pipes (2).

3. The high-efficiency drying tank for the photovoltaic panel texturing process as described in claim 1, characterized in that: The filter (5) is a diaphragmless filter, and the filter media of the diaphragmless filter is U15PTFE.

4. The high-efficiency drying tank for the photovoltaic panel texturing process as described in claim 1, characterized in that: The heating pack (4) is a PTC heater.

5. The high-efficiency drying tank for the photovoltaic panel texturing process as described in claim 1, characterized in that: The bottom of the tank (3) is connected to a support (301), and the heating plate (6) is suspended on the support (301).

6. The high-efficiency drying tank for the photovoltaic panel texturing process as described in claim 5, characterized in that: The heating plate (6) includes two heat-resistant glass pieces (601), which are connected to a stainless steel frame (602), and the frame (602) is connected to a support (301); there is a gap between the heat-resistant glass pieces (601), and several infrared heating tubes (603) are installed in the gap.

7. The high-efficiency drying tank for the photovoltaic panel texturing process as described in claim 5, characterized in that: The heating plate (6) is 3-5cm away from the bottom of the tank (3).

8. The high-efficiency drying tank for the photovoltaic panel texturing process as described in claim 1, characterized in that: Thermocouples are installed on the inner wall of the tank (3).

9. A high-efficiency drying tank for the photovoltaic panel texturing process as described in any one of claims 1-8, characterized in that: The side walls of the tank (3) and the upper surface of the heating plate (6) at the bottom of the tank (3) are coated with Teflon coating.

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