Device for cleaning fragments of return carrier plate under solar cell

Abstract

The utility model discloses a device for cleaning fragments of a return carrier plate below a solar cell. The device at least comprises but not limited to a conveying mechanism, a purging mechanism and a material cavity, the conveying mechanism is arranged in the material cavity, a bearing part of the conveying mechanism is of a hollow structure, the blowing mechanisms stretch across the conveying mechanism in the width direction, and the number of the blowing mechanisms is at least one in the length direction of the conveying mechanism; when the scheme is used, the battery pieces are conveyed through the conveying mechanism, and the conveying mechanism is of a hollow structure, so that the blowing mechanism can blow out airflow in the preset direction when the battery pieces with missing partial areas appear in the conveying process, and the damaged battery pieces automatically fall off from the conveying mechanism; the situation that new battery pieces placed by a feeding machine are overlapped with missing battery pieces in the later period, so that HJT battery piece film coating fails is avoided, and the yield of the battery pieces is increased.

Description

Technical Field

[0001] This utility model relates to the field of silicon wafer transfer technology, and in particular to a device for cleaning fragments from a solar cell backhaul carrier plate. Background Technology

[0002] Because the carrier plate (for HJT solar cells) of the PVD loading equipment has a hollow design, after the solar cell unloading machine picks up the cells, the carrier plate returns to the loading machine via the lower return mechanism for the cell placement operation. Due to the suction cup structure of the unloading machine, incomplete solar cells cannot be picked up, resulting in some missing cells being missed and returned to the loading machine. After the loading machine places the cells, the new cells overlap with the missing cells, causing HJT cell coating failure. Current technology cannot automatically clean the missing cells, and manual inspection is not only time-consuming and labor-intensive but also prone to oversight, reducing the cell coating yield. Utility Model Content

[0003] The purpose of this invention is to provide a device for cleaning fragments on the lower return carrier plate of solar cells, addressing the above-mentioned shortcomings. This solves the problems of existing technologies that cannot automatically clean missing solar cells, and manual inspection is not only time-consuming and labor-intensive, but also prone to negligence, reducing the yield of solar cell coating.

[0004] This utility model is achieved through the following solution:

[0005] An apparatus for cleaning debris from a solar cell undercarriage transport plate includes, but is not limited to, a conveying mechanism, a blowing mechanism, and a material chamber; the conveying mechanism is disposed in the material chamber, and the bearing portion of the conveying mechanism has a hollow structure; the blowing mechanism is disposed across the width direction of the conveying mechanism, and at least one blowing mechanism is provided along the length direction of the conveying mechanism.

[0006] Based on the above-mentioned device for cleaning debris from the lower return carrier plate of a solar cell, the blowing mechanism includes a fixed cavity, a main air duct, an air inlet, and an air outlet; the fixed cavity is generally a cuboid structure, the main air duct is arranged along the length of the fixed cavity, the air inlet is located on the side walls at both ends of the fixed cavity, and the air outlet is located at the bottom of one side of the fixed cavity.

[0007] Based on the above-mentioned device for cleaning debris from the lower return carrier plate of a solar cell, a plurality of auxiliary air chambers are arranged sequentially along the length of the main air channel. One end of each auxiliary air chamber is connected to the main air channel, and the other end penetrates the side wall of the fixed chamber.

[0008] Based on the above-mentioned device for cleaning debris from a solar cell undercarriage transfer plate, the auxiliary air chamber includes a first chamber and a second chamber. The first chamber is directly connected to the main air duct, and the second chamber is set at a predetermined angle to the first chamber. The opening directions of the second chamber and the fixed chamber are opposite to the movement direction of the transmission mechanism.

[0009] Based on the above-mentioned device for cleaning debris from the bottom return carrier plate of a solar cell, the first cavity includes a first end and a second end, and the width of the first cavity gradually increases from the first end to the second end; the thickness of the first cavity remains unchanged.

[0010] Based on the above-mentioned device for cleaning debris from the bottom return carrier plate of a solar cell, the second cavity includes a third end and a fourth end. From the third end to the fourth end, the width of the second cavity gradually increases, and the thickness of the second cavity gradually decreases.

[0011] Based on the above-mentioned device for cleaning fragments of the lower return carrier plate of solar cells, the conveying mechanism includes a drive wheel, a mating groove and a bearing plate; the drive wheel is symmetrically arranged on both sides of the material cavity, and multiple drive wheels are arranged along the length direction of the material cavity; the mating groove is sleeved on the drive wheel; the bearing plate is arranged between two mating grooves; the bearing plate is a perforated mesh plate.

[0012] Based on the above-mentioned device for cleaning debris from a solar cell undercarriage support plate, the fixed cavity is spaced at a predetermined distance from the support plate.

[0013] Based on the above-mentioned device for cleaning debris from the lower return carrier plate of a solar cell, a plug is provided on the air inlet, and the size of the plug is 6mm.

[0014] Based on the above-mentioned device for cleaning debris from the lower return plate of a solar cell, the air inlet is located at the center of the side wall of the fixed cavity.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0016] 1. In use, this solution uses a conveying mechanism to transport the solar cells. Since the conveying mechanism has a hollow structure, when some solar cells are missing during transport, the blowing mechanism can blow air in a predetermined direction to make the damaged solar cells fall off the conveying mechanism automatically. This avoids the situation where the new solar cells are loaded onto the feeding machine later and the missing solar cells overlap, causing the HJT solar cell coating to fail, thus improving the yield of solar cells. Attached Figure Description

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

[0018] Figure 2 This is a side view of the overall structure of this utility model;

[0019] Figure 3 This is a top view of the overall structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the purging mechanism in this utility model;

[0021] Figure 5 This is a cross-sectional structural diagram of the purging mechanism in this utility model;

[0022] Figure descriptions: 1. Conveying mechanism; 2. Blowing mechanism; 3. Material chamber; 4. Fragment; 11. Drive wheel; 12. Fitting groove; 13. Bearing plate; 21. Fixed chamber; 22. Main air passage; 23. Air inlet; 24. Air outlet; 25. Auxiliary air chamber; 251. First chamber; 252. Second chamber; 253. First end; 254. Second end; 255. Third end; 256. Fourth end. Detailed Implementation

[0023] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0024] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., 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 component 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.

[0026] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0027] Example 1

[0028] like Figures 1-5As shown, this utility model provides a technical solution:

[0029] An apparatus for cleaning debris from a solar cell undercarriage transfer plate includes, but is not limited to, a conveying mechanism 1, a blowing mechanism 2, and a material chamber 3; the conveying mechanism 1 is disposed in the material chamber 3, and the bearing part of the conveying mechanism 1 has a hollow structure; the blowing mechanism 2 is disposed across the width direction of the conveying mechanism, and at least one blowing mechanism 2 is provided along the length direction of the conveying mechanism.

[0030] Based on the above structure, the battery cells are transported by the conveying mechanism 1. Since the conveying mechanism 1 has a hollow structure, when a battery cell is missing in a certain area during the transport, the blowing mechanism 2 can blow out air in a predetermined direction, so that the damaged battery cell will automatically fall off the conveying mechanism. This avoids the situation where the new battery cell is put on by the feeding machine later overlaps with the missing battery cell, causing the HJT battery cell coating to fail, thus improving the yield of the battery cells.

[0031] As an example, the purging mechanism 2 may include a fixed cavity 21, a main air passage 22, an air inlet 23, and an air outlet 24. The fixed cavity 21 is generally a cuboid structure. The main air passage 22 is arranged along the length of the fixed cavity 21. The air inlet 23 is located on the side walls at both ends of the fixed cavity 21, and the air outlet 24 is located at the bottom of one side of the fixed cavity 21. The air inlet 23 may be located at the center of the side wall of the fixed cavity 21.

[0032] Based on the above structure, compressed gas enters the main air passage 22 through the air inlet 23, and then is blown out from the air outlet 24 to the conveying mechanism 1, blowing the damaged battery cells off the conveying mechanism.

[0033] As an example, multiple auxiliary air chambers 25 are arranged sequentially along the length of the main airway 22. One end of the auxiliary air chamber 25 is connected to the main airway 22, and the other end passes through the side wall of the fixed cavity 21.

[0034] Based on the above structure, by setting multiple auxiliary air chambers 25, the compressed gas entering from the main air channel 22 can be transported to the auxiliary air chambers 25 along the length of the main air channel 22 while keeping the air pressure as constant as possible; this ensures that the air pressure output from each auxiliary air chamber 25 is the same as soon as possible, thus ensuring the efficiency of blowing off damaged battery cells.

[0035] As an example, the auxiliary air chamber 25 may include a first chamber 251 and a second chamber 252. The first chamber 251 is directly connected to the main airway 22, and the second chamber 252 is set at a predetermined angle to the first chamber 251. The opening direction of the second chamber 252 and the fixed chamber 21 is opposite to the movement direction of the transmission mechanism.

[0036] Based on the above structure, by setting the second cavity 252 and the first cavity 251 to a predetermined angle, the air outlet direction can be changed, so that the airflow can blow away the fragments 4.

[0037] As an example, the first cavity 251 may include a first end 253 and a second end 254, wherein the width dimension of the first cavity 251 is gradually increased from the first end 253 to the second end 254, while the thickness dimension remains unchanged.

[0038] The second cavity 252 may include a third end 255 and a fourth end 256. The width of the second cavity 252 gradually increases from the third end 255 to the fourth end 256, and the thickness of the second cavity 252 gradually decreases.

[0039] Based on the above structure, by setting the first cavity 251 and the second cavity 252 as flared structures, the air outlet area can be increased, allowing the gas to stay briefly in the first cavity 251 and the second cavity 252 before being compressed and discharged, thereby improving the purging efficiency.

[0040] As an example, the conveying mechanism 1 may include a drive wheel 11, a mating groove 12 and a bearing plate 13; the drive wheel 11 is symmetrically arranged on both sides of the material cavity 3, and multiple drive wheels 11 are arranged along the length of the material cavity 3; the mating groove 12 is sleeved on the drive wheel 11; the bearing plate 13 is arranged between two mating grooves 12; the bearing plate 13 may be a perforated mesh plate.

[0041] Based on the above structure, the drive wheel 11 drives the mating groove 12 to move, thereby driving the support plate 13 to move in a specified direction to realize the transmission of the battery cells.

[0042] As an example, the fixed cavity 21 is spaced at a predetermined distance from the bearing plate 13, and a plug can be provided on the air inlet 23. The size of the plug is 6mm.

[0043] Based on the above structure, there is a 2mm gap between the air inlet 23 and the air outlet 24, forming a small air duct. When compressed gas is introduced, the strong air pressure causes the compressed gas to be ejected from the air outlet 24, forming an air curtain above the carrier plate, which can effectively clean the solar cells on the moving carrier plate.

[0044] This solution ensures personnel safety and reduces production capacity loss from cleaning work. Based on a cleaning time of 10 minutes per substrate fragment 4 and a cleaning frequency of once per shift, it can increase production by 4,800 pieces per day. It also reduces the cost of defects caused by fragment 4. Based on a defect rate of 0.01% per machine per day, the cost of 104 solar cells can be recovered per day.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for cleaning debris from a solar cell underpass carrier plate, characterized in that, The system includes, but is not limited to, a conveying mechanism, a purging mechanism, and a material chamber; the conveying mechanism is disposed in the material chamber, and the bearing part of the conveying mechanism has a hollow structure; the purging mechanism is disposed across the width direction of the conveying mechanism, and at least one purging mechanism is disposed along the length direction of the conveying mechanism; the purging mechanism includes a fixed cavity, a main air passage, an air inlet, and an air outlet; the fixed cavity is generally a cuboid structure, the main air passage is disposed along the length of the fixed cavity, the air inlet is disposed on the side walls at both ends of the fixed cavity, and the air outlet is disposed at the bottom position of one side of the fixed cavity.

2. The apparatus for cleaning debris from the lower return plate of a solar cell as described in claim 1, characterized in that: Multiple auxiliary air chambers are arranged sequentially along the length of the main airway. One end of each auxiliary air chamber is connected to the main airway, and the other end passes through the side wall of the fixed chamber.

3. The apparatus for cleaning debris from the lower return plate of a solar cell as described in claim 2, characterized in that: The auxiliary air chamber includes a first chamber and a second chamber. The first chamber is directly connected to the main airway, and the second chamber is set at a predetermined angle to the first chamber. The opening direction of the second chamber and the fixed chamber is opposite to the movement direction of the transmission mechanism.

4. The apparatus for cleaning debris from the lower return plate of a solar cell as described in claim 3, characterized in that: The first cavity includes a first end and a second end. The width of the first cavity gradually increases from the first end to the second end, while the thickness of the first cavity remains constant.

5. The apparatus for cleaning debris from the lower return plate of a solar cell as described in claim 4, characterized in that: The second cavity includes a third end and a fourth end. From the third end to the fourth end, the width of the second cavity gradually increases, and the thickness of the second cavity gradually decreases.

6. The apparatus for cleaning debris from the lower return plate of a solar cell as described in claim 5, characterized in that: The conveying mechanism includes a drive wheel, a mating groove, and a bearing plate; the drive wheels are symmetrically arranged on both sides of the material cavity, and multiple drive wheels are arranged along the length of the material cavity; the mating groove is sleeved on the drive wheel; the bearing plate is arranged between two mating grooves; the bearing plate is a perforated mesh plate.

7. The apparatus for cleaning debris from the lower return plate of a solar cell as described in claim 6, characterized in that: The fixed cavity spacer plate is set at a predetermined distance.

8. The apparatus for cleaning debris from the lower return plate of a solar cell as described in any one of claims 1 to 7, characterized in that: The air inlet is equipped with a plug, and the quick plug is 6mm in size.

9. The apparatus for cleaning debris from the lower return plate of a solar cell as described in any one of claims 1 to 7, characterized in that: The air inlet is located at the center of the side wall of the fixed cavity.

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