A photovoltaic cell panel laser doping apparatus

Abstract

The utility model discloses a photovoltaic cell panel laser doping equipment, including doping device and dust collector, dust collector is located doping device delivery's front end, and dust collector includes conveyer belt, lifting device, dust absorption subassembly, two conveyer belts are left and right arrangement, and the upper surface of conveyer belt can convey photovoltaic silicon wafer, and lifting device is located the middle of two conveyer belts, and lifting device can move along the length direction of conveyer belt, and lifting device includes lifting subassembly, and dust absorption subassembly is located lifting device top, and dust absorption subassembly includes dust suction mouth, and dust suction mouth is to lifting subassembly, and lifting subassembly can lift photovoltaic silicon wafer and be close to dust suction mouth, the utility model discloses a photovoltaic silicon wafer is lifted close to dust absorption subassembly in the process of conveying photovoltaic silicon wafer, and moves photovoltaic silicon wafer through the dust absorption subassembly's roller and negative pressure cleaning photovoltaic silicon wafer upper end surface's dust, and dust absorption cleaning effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field, and more specifically, to a laser doping device for photovoltaic panels. Background Technology

[0002] Photovoltaic silicon wafers are a crucial component in the fabrication of photovoltaic cells. Laser doping of photovoltaic silicon wafers using laser doping equipment is one of the key processes in manufacturing photovoltaic cells. However, existing laser doping equipment inevitably contains dust and debris on the surface of the silicon wafers before laser doping, which affects the entire doping process and reduces the production yield of photovoltaic cells. Current cleaning methods involve brushing or blowing air, but these methods cause dust to scatter inside the equipment. Therefore, a technical solution is needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a laser doping device for photovoltaic panels that can effectively clean photovoltaic silicon wafers on a production line.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a photovoltaic panel laser doping device, including a doping device and a dust removal device. The dust removal device is located at the front end of the doping device's conveyor. The dust removal device includes a conveyor belt, a lifting device, and a dust collection component. The two conveyor belts are arranged side by side, and the upper surface of the conveyor belts can convey photovoltaic silicon wafers. The lifting device is located in the middle of the two conveyor belts and can move along the length of the conveyor belts. The lifting device includes a lifting component, and the dust collection component is located above the lifting device. The dust collection component includes a dust collection port facing the lifting component, and the lifting component can lift the photovoltaic silicon wafers close to the dust collection port.

[0006] Furthermore, the dust collection assembly includes a rotatable roller with a lint-adhesive layer on its outer wall. The lint-adhesive layer can contact the upper surface of the photovoltaic silicon wafer, and the roller rotates from below into the dust collection port.

[0007] Furthermore, the lower end of the roller is lower than the lower end of the suction port, and the suction port located above the roller is provided with scraping teeth. The scraping teeth are located inside the suction port, and part of the scraping teeth extends into the lint-adhesive layer.

[0008] Furthermore, the lifting device includes a base plate, a motor, a connecting frame, and two slide rails arranged side by side, extending along the length of the conveyor belt. The base plate is slidably connected to the slide rails. The output end of the motor is connected to a lead screw, which extends along the length of the conveyor belt and is threadedly connected to a connecting seat on the base plate. The other end of the lead screw is rotatably connected to the connecting frame, which is fixedly installed on the two slide rails.

[0009] Furthermore, the lifting assembly includes a first cylinder and multiple supports. The supports extend radially, and suction cups are installed at the outer ends of the supports. The first cylinder drives the supports to rise and fall, and the suction cups can hold the lower end face of the photovoltaic silicon wafer.

[0010] Furthermore, the lifting assembly includes a top plate located at the center of all the supports, the top plate being able to move up and down, and the top plate being supported by springs.

[0011] Furthermore, the bracket includes a first support rod and a second support rod, the first support rod and the second support rod are slidably connected, the second support rod is partially located inside the first support rod, and the suction cup is installed at the end of the second support rod.

[0012] Furthermore, a side plate is installed on the outside of each conveyor belt, and a channel for conveying the photovoltaic silicon wafer is formed between two side plates.

[0013] Furthermore, the lifting device includes a limiting component located on the side of the lifting component close to the doping device. The limiting component includes a second cylinder and a limiting plate. The second cylinder can drive the limiting plate to lift, and the limiting plate can restrict the photovoltaic silicon wafer from being conveyed along the conveyor belt.

[0014] The beneficial effects of this utility model are:

[0015] This invention lifts the photovoltaic silicon wafers close to the dust collection component during the conveying process, and the dust on the upper surface of the photovoltaic silicon wafers is adsorbed by the rollers of the dust collection component during the movement of the photovoltaic silicon wafers. The dust is then cleaned by the negative pressure of the dust collection port, which can remove dust from the photovoltaic silicon wafers on the production line with good dust removal and cleaning effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment.

[0017] Figure 2 This is a schematic diagram of a dust removal device in this embodiment.

[0018] Figure 3This is a cross-sectional view of the dust removal device in this embodiment.

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] Figure 5 This is a top view of the dust removal device in this embodiment.

[0021] Reference numerals: 1. Conveyor belt; 11. Side plate; 2. Lifting device; 21. Base plate; 211. Connecting seat; 22. Lifting assembly; 221. First cylinder; 222. Bracket; 2221. Suction cup; 2222. First support rod; 2223. Second support rod; 223. Top plate; 23. Limiting assembly; 231. Second cylinder; 232. Limiting plate; 24. Motor; 241. Lead screw; 25. Slide rail; 26. Connecting frame; 3. Dust collection assembly; 31. Dust collection port; 311. Dust collection channel; 312. Scraper teeth; 32. Roller; 321. Lint-collecting layer; 101. Photovoltaic silicon wafer. Detailed Implementation

[0022] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] like Figures 1-5 As shown, this embodiment discloses a photovoltaic panel laser doping equipment, including a doping device and a dust removal device. The doping device and the dust removal device are located on the production line. The dust removal device is located at the front end of the doping device conveyor. The dust removal device includes a conveyor belt 1, a lifting device 2, and a dust collection component 3. The two conveyor belts 1 are arranged side to side. The upper surface of the conveyor belt 1 can convey photovoltaic silicon wafers 101. A side plate 11 is installed on the outside of each conveyor belt 1. A channel for conveying photovoltaic silicon wafers 101 is formed between the two side plates 11. The lifting device 2 is located in the middle of the two conveyor belts 1. The photovoltaic silicon wafers 101 at the outer end are sent into the dust removal device through the conveyor belt 1. The dust collection component 3 is located above the lifting device 2 and is connected to an external suction fan.

[0024] The lifting device 2 includes a base plate 21, a lifting assembly 22, a motor 24, a connecting frame 26, and two slide rails 25. The two slide rails 25 are arranged side by side and extend along the length of the conveyor belt 1. The base plate 21 is slidably connected to the slide rails 25. The output end of the motor 24 is connected to a lead screw 241, which extends along the length of the conveyor belt 1 and is threadedly connected to a connecting seat 211 of the base plate 21. The other end of the lead screw 241 is rotatably connected to the connecting frame 26, which is fixedly installed on the two slide rails 25. The motor 24 drives the lead screw 241 to slide the base plate 21 along the slide rails 25. The slide rails 25 provide limiting guidance for the movement of the base plate 21. The lifting assembly 22 is installed on the upper surface of the base plate 21. The lifting device 2 can move along the length of the conveyor belt 1, that is, the lifting assembly 22 can move after lifting the photovoltaic silicon wafer 101.

[0025] The dust collection component 3 includes a dust collection port 31. The upper end of the dust collection port 31 is connected to an external exhaust fan. The lower opening of the dust collection port 31 faces the photovoltaic silicon wafer 101 and the lifting component 22. The lifting component 22 can lift the photovoltaic silicon wafer 101 close to the dust collection port 31. The motor 24 drives the base plate 21 to move so that the dust collection port 31 can perform dust collection from one end to the other on the upper surface of the photovoltaic silicon wafer 101, and can perform comprehensive dust collection on the upper surface of the photovoltaic silicon wafer 101.

[0026] The dust collection assembly 3 includes a rotatable roller 32, which is rotatably mounted on a dust collection port 31. A dust collection channel 311 is formed inside the dust collection port 31. The roller 32 is driven by a small motor. The outer wall of the roller 32 is provided with a lint-adhesive layer 321, which can contact the upper surface of the photovoltaic silicon wafer 101. The lint-adhesive layer 321 can adhere dust from the upper surface of the photovoltaic silicon wafer 101 by rotating. The roller 32 rotates from below into the dust collection port 31. Figure 4 As shown, the roller 32 rotates clockwise, drawing dust from the rear end of the upper surface of the photovoltaic silicon wafer 101 into the dust suction channel 311, where it can be adsorbed by the dust suction port 31.

[0027] The lower end of the roller 32 is lower than the lower end of the suction port 31. The suction port 31 located above the roller 32 is provided with scraper teeth 312. The scraper teeth 312 are located inside the suction port 31, and part of the scraper teeth 312 extends into the lint layer 321. The scraper teeth 312 can scrape off the dust adhering to the lint layer 321 of the roller 32. As the roller 32 rotates, the scraper teeth 312 scrape off the dust and suck it away along the suction channel 311. The scraper teeth 312 can clean the roller 32 in time, making the cleaning effect of the roller 32 better.

[0028] The lifting device 2 includes a limiting component 23, which is located on the side of the lifting component 22 near the doping device. The limiting component 23 includes a second cylinder 231 and a limiting plate 232. The second cylinder 231 can drive the limiting plate 232 to lift, and the limiting plate 232 can restrict the photovoltaic silicon wafer 101 from being conveyed along the conveyor belt 1. When the photovoltaic silicon wafer 101 is conveyed along the conveyor belt 1, the second cylinder 231 lifts the limiting plate 232, and the limiting plate 232 blocks the photovoltaic silicon wafer 101, thus preventing it from moving. When the lifting component 22 lifts the photovoltaic silicon wafer 101, the photovoltaic silicon wafer 101 can move up and down along the limiting plate 232. After the photovoltaic silicon wafer 101 is cleaned, it is placed back on the conveyor belt 1, the second cylinder 231 drives the limiting plate 232 to retract, and the photovoltaic silicon wafer 101 is sent to the doping device.

[0029] The lifting assembly 22 includes a first cylinder 221 and multiple supports 222. Each support 222 has a central connecting platform. There are four supports 222, which extend radially. Each support 222 includes a first support rod 2222 and a second support rod 2223. The first support rod 2222 can rotate and adjust around the central connecting platform and can be locked with screws. The first support rod 2222 and the second support rod 2223 are slidably connected. A portion of the second support rod 2223 is located within the first support rod 2222. The two rods 2223 are telescopic, and the bracket 222 can be adjusted according to the different widths of the photovoltaic silicon wafers 101, changing the position of the four suction cups 2221. The suction cups 2221 are installed on the outer end of the bracket 222 and are installed at the end of the second rod 2223. The four suction cups 2221 are arranged in an X-shape. The suction cups 2221 can hold the lower end face of the photovoltaic silicon wafer 101, and can maximize the adsorption and fixation of the lower end face of the photovoltaic silicon wafer 101, making the photovoltaic silicon wafer 101 more stable.

[0030] The lifting assembly 22 includes a top plate 223, which is located at the center of all the supports 222. The top plate 223 is slidably connected to the connecting platform and can move up and down. The top plate 223 is supported by a spring. The first cylinder 221 drives the supports 222 to rise and fall. When the lifting assembly 22 rises, the suction port of the top plate 223 and the suction cup 2221 touch the lower end face of the photovoltaic silicon wafer 101. Since the suction cup 2221 will deform when adsorbing, the retractable top plate 223 can not only support the middle of the photovoltaic silicon wafer 101, but also prevent the photovoltaic silicon wafer 101 from bending downward at the four corners and bulging in the center when adsorbed.

[0031] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A laser doping device for photovoltaic panels, characterized in that, The device includes a doping device and a dust removal device. The dust removal device is located at the front end of the doping device's conveyor. The dust removal device includes a conveyor belt (1), a lifting device (2), and a dust collection component (3). The two conveyor belts (1) are arranged side by side. The upper surface of the conveyor belts (1) can convey photovoltaic silicon wafers (101). The lifting device (2) is located in the middle of the two conveyor belts (1). The lifting device (2) can move along the length of the conveyor belts (1). The lifting device (2) includes a lifting component (22). The dust collection component (3) is located above the lifting device (2). The dust collection component (3) includes a dust collection port (31). The dust collection port (31) faces the lifting component (22). The lifting component (22) can lift the photovoltaic silicon wafers (101) and bring them close to the dust collection port (31).

2. The photovoltaic panel laser doping equipment according to claim 1, characterized in that, The dust collection assembly (3) includes a rotatable roller (32), the outer wall of which is provided with a lint-adhesive layer (321), the lint-adhesive layer (321) being able to contact the upper surface of the photovoltaic silicon wafer (101), and the roller (32) rotating from below into the dust collection port (31).

3. The photovoltaic panel laser doping equipment according to claim 2, characterized in that, The lower end of the roller (32) is lower than the lower end of the suction port (31). The suction port (31) located above the roller (32) is provided with scraping teeth (312). The scraping teeth (312) are located inside the suction port (31), and part of the scraping teeth (312) extends into the lint-removing layer (321).

4. The photovoltaic panel laser doping equipment according to claim 1, characterized in that, The lifting device (2) includes a base plate (21), a motor (24), a connecting frame (26), and two slide rails (25). The two slide rails (25) are arranged in a left-right configuration and extend along the length of the conveyor belt (1). The base plate (21) is slidably connected to the slide rails (25). The output end of the motor (24) is connected to a lead screw (241), which extends along the length of the conveyor belt (1). The lead screw (241) is threadedly connected to the connecting seat (211) of the base plate (21). The other end of the lead screw (241) is rotatably connected to the connecting frame (26), which is fixedly installed on the two slide rails (25).

5. The photovoltaic panel laser doping equipment according to claim 1, characterized in that, The lifting assembly (22) includes a first cylinder (221) and multiple supports (222). The supports (222) extend in the radial direction, and a suction cup (2221) is installed at the outer end of the supports (222). The first cylinder (221) drives the supports (222) to rise and fall, and the suction cup (2221) can hold the lower end face of the photovoltaic silicon wafer (101).

6. The photovoltaic panel laser doping device according to claim 5, characterized in that, The lifting assembly (22) includes a top plate (223) located at the center of all the supports (222). The top plate (223) is capable of moving up and down and is supported by springs.

7. The photovoltaic panel laser doping equipment according to claim 5, characterized in that, The bracket (222) includes a first support rod (2222) and a second support rod (2223), the first support rod (2222) and the second support rod (2223) are slidably connected, the second support rod (2223) is partially located inside the first support rod (2222), and the suction cup (2221) is installed at the end of the second support rod (2223).

8. The photovoltaic panel laser doping equipment according to claim 1, characterized in that, Each of the conveyor belts (1) has a side plate (11) installed on its exterior, and a channel for conveying the photovoltaic silicon wafer (101) is formed between the two side plates (11).

9. The photovoltaic panel laser doping equipment according to claim 1, characterized in that, The lifting device (2) includes a limiting component (23), which is located on the side of the lifting component (22) close to the doping device. The limiting component (23) includes a second cylinder (231) and a limiting plate (232). The second cylinder (231) can drive the limiting plate (232) to lift, and the limiting plate (232) can restrict the photovoltaic silicon wafer (101) from being conveyed along the conveyor belt (1).

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