Temperature detection auxiliary basket and screen process cartridge furnace

Abstract

The application provides a temperature detection auxiliary basket and a screen process clogging furnace, wherein the temperature detection auxiliary basket comprises a basket main body assembly, the basket main body assembly comprises a first end plate, a second end plate, a basket rack and a connecting structure, the connecting structure is arranged in parallel with the basket rack, two ends of the basket rack are connected with the first end plate and the second end plate respectively, and two ends of the connecting structure are connected with the first end plate and the second end plate respectively; and a mounting platform assembly is connected with the connecting structure, and a temperature detection device is arranged on the mounting platform assembly. The technical scheme of the application effectively solves the problem that battery pieces are easily damaged in the process of detecting the temperature of silicon pieces in the screen process clogging furnace.

Description

Technical Field

[0001] This application relates to the technical field of solar cell processing, and more particularly to a temperature detection auxiliary basket and a wire mesh processing stopper furnace. Background Technology

[0002] HJT cells are a type of photoelectric conversion device developed based on the photovoltaic effect. Currently, the main types of solar cells on the international photovoltaic market are crystalline silicon, monocrystalline heterojunction, amorphous silicon thin film, cadmium telluride thin film, and copper indium selenide thin film solar cells. However, due to limitations in material purity and manufacturing processes, it is difficult to further improve their conversion efficiency. Therefore, if HJT cells want to quickly occupy the photovoltaic market, they can only achieve this by gaining a significant cost advantage.

[0003] The main reason for the rapid market dominance of heterojunction solar cells is their higher efficiency and more stable process. In particular, the lower furnace temperature used in the wire mesh process of the cassette furnace offers significant advantages in energy saving and efficiency improvement. Therefore, optimizing the furnace temperature is crucial. Frequent temperature adjustments require frequent temperature pulling processes for verification. Routine shutdowns and restarts, or furnace temperature checks, also increase the workload of the temperature pulling process. The temperature pulling process involves checking the surface temperature of the solar cells. Typically, thermocouples are connected to the surface of the cells and placed in an insulated box, entering the cassette furnace along with the silicon wafer basket for temperature testing.

[0004] In existing technologies, thermocouple housings lack a fixed placement area during the temperature-raising process. Production line workers typically place them directly on the base connecting the cassette furnace and the conveyor structure without additional fixation. During the operation of the conveyor structure, there is significant shaking, causing the housing to tip over. This can lead to severe blockage of the cassette furnace and even production line shutdowns and machine damage. The connection between the thermocouple wires and the solar cells can also cause the solar cells to slide, resulting in damage. Utility Model Content

[0005] One of the technical problems this application aims to solve is that during the process of detecting the temperature of silicon wafers inside the screen printing furnace, there is a problem that the solar cells are easily damaged.

[0006] To solve the above-mentioned technical problems, this application provides a temperature detection auxiliary basket and wire mesh process jamming furnace.

[0007] According to this application, a temperature detection auxiliary flower basket includes: a flower basket main body assembly, which includes a first end plate, a second end plate, a flower basket rack, and a connecting structure. The connecting structure is arranged parallel to the flower basket rack, and both ends of the flower basket rack are respectively connected to the first end plate and the second end plate. Both ends of the connecting structure are respectively connected to the first end plate and the second end plate. An installation platform assembly is connected to the connecting structure, and a temperature detection device is mounted on the installation platform assembly.

[0008] In some embodiments, the connection structures include multiple structures disposed on the circumferential outer side of the mounting platform component.

[0009] In some embodiments, the installation platform component includes an installation platform structure and a plurality of limiting structures connected to the installation platform structure, and a temperature detection device is disposed on the installation platform structure and located between the plurality of limiting structures.

[0010] In some embodiments, multiple limiting structures are movably connected to the mounting platform structure.

[0011] In some embodiments, the mounting platform structure has multiple elongated holes, each corresponding to a multiple limiting structure, and fasteners pass through the elongated holes and connect to the limiting structures.

[0012] In some embodiments, the mounting platform components are movably connected to the connection structure.

[0013] In some embodiments, the basket rack includes a plurality of racks, each rack having a first fixed position and a second fixed position, with a predetermined distance between the first fixed position and the second fixed position.

[0014] In some embodiments, the projection of the mounting platform component along the horizontal direction is located between the first fixed position and the second fixed position.

[0015] In some embodiments, the basket rack includes a connecting portion, a supporting portion, and a force-applying portion. The two ends of the connecting portion are respectively connected to a first end plate and a second end plate. The supporting portion is connected to the connecting portion. The force-applying portion is movably connected to the connecting portion. The force-applying portion has a force-applying state close to the supporting portion and a force-waiting state far from the supporting portion.

[0016] According to another aspect of this application, a screen printing process stopper furnace is also provided. The screen printing process stopper furnace adopts the above-mentioned temperature detection auxiliary basket. The screen printing process stopper furnace includes a conveying assembly, and a first end plate is connected to the conveying assembly.

[0017] Through the above technical solution, the temperature detection auxiliary basket provided in this application has solar cells mounted on the basket rack, and the temperature detection device connected to the mounting platform assembly, which in turn is connected to the connecting structure. Since both ends of the connecting structure and the basket rack are connected to the first and second end plates, the relative positions of the solar cells and the temperature detection device are fixed. A thermocouple wire connects the solar cells and the temperature detection device. The main assembly of the basket is mounted on the conveying assembly of the screen-mesh furnace. Even if the main assembly of the basket tilts due to vibration of the conveying assembly, the temperature detection device will not slip, causing the solar cells to slide and resulting in damage. The technical solution of this application effectively solves the problem of easy damage to solar cells during the detection of silicon wafer temperature inside the screen-mesh furnace in the prior art. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This paper shows a schematic diagram of the structure of the temperature detection auxiliary flower basket disclosed in Embodiment 1 of this application; Figure 2 This paper shows a top view of the mounting platform assembly for the temperature detection auxiliary flower basket disclosed in Embodiment 2 of this application; Figure 3 This diagram shows a partially enlarged structural schematic of the rack of the temperature detection auxiliary flower basket disclosed in Embodiment 3 of this application.

[0020] Explanation of reference numerals in the attached figures: 10. Main component of the flower basket; 11. First end plate; 12. Second end plate; 13. Flower basket rack; 131. First fixing position; 132. Second fixing position; 133. Connecting part; 134. Supporting part; 135. Force-applying part; 14. Connecting structure; 20. Mounting platform component; 21. Mounting platform structure; 211. Elongated hole; 22. Limiting structure. Detailed Implementation

[0021] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments of the application herein, but includes all technical solutions falling within the scope of the claims.

[0022] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0023] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0025] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0026] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0028] like Figure 1 As shown, the temperature detection auxiliary flower basket disclosed in Embodiment 1 of this application includes: a flower basket main body assembly 10 and an installation platform assembly 20. The flower basket main body assembly 10 includes a first end plate 11, a second end plate 12, a flower basket rack 13 and a connecting structure 14. The connecting structure 14 is arranged parallel to the flower basket rack 13. The two ends of the flower basket rack 13 are respectively connected to the first end plate 11 and the second end plate 12. The two ends of the connecting structure 14 are respectively connected to the first end plate 11 and the second end plate 12. The installation platform assembly 20 is connected to the connecting structure 14. The temperature detection device is installed on the installation platform assembly 20.

[0029] Using the technical solution of Embodiment 1, the solar cell is mounted on the rack 13, and the temperature detection device is connected to the mounting platform assembly 20. The mounting platform assembly 20 is connected to the connecting structure 14. Since both ends of the connecting structure 14 and the rack 13 are connected to the first end plate 11 and the second end plate 12, the relative positions of the solar cell and the temperature detection device are fixed. A thermocouple wire connects the solar cell and the temperature detection device. The main assembly 10 of the rack is mounted on the conveying assembly of the wire mesh process cassette furnace. Even if the main assembly of the rack tilts due to vibration of the conveying assembly, the temperature detection device will not slip, causing the solar cell to slide and be damaged. The technical solution of Embodiment 1 effectively solves the problem of easy damage to solar cells during the detection of silicon wafer temperature inside the wire mesh process cassette furnace in the prior art.

[0030] It should be noted that the aforementioned temperature detection device uses thermocouples, which are housed inside the insulation box to prevent the high temperature inside the furnace from affecting the thermocouple's detection results. The thermocouple wires are pulled out from inside the insulation box and attached to the surface of the solar cells using high-temperature resistant tape to monitor the surface temperature of the solar cells. Because the furnace temperature is frequently adjusted, the temperature of some solar cells needs to be checked using the temperature detection device before each adjustment. Since the thermocouples need to be removed from inside the insulation box to obtain temperature values, the insulation box is typically not fixedly connected to other structures. Due to the small size and height of the temperature detection device, if placed directly on the conveying assembly, it is easily affected by vibration during transport and may slip off the conveying assembly. However, the temperature detection auxiliary basket of this application is taller; even if vibration occurs and the basket tilts, it will only collide with the inner wall of the furnace and will not fall off the conveying assembly.

[0031] like Figure 1As shown, in the technical solution of Embodiment 1, the connecting structure 14 includes multiple structures, which are disposed on the circumferential outer side of the mounting platform assembly 20. All multiple connecting structures 14 are connected to the mounting platform assembly 20, ensuring the stability of the mounting platform assembly 20. Simultaneously, when the temperature detection device is mounted on the mounting platform assembly 20, the multiple connecting structures 14 are located on the circumferential outer side of the temperature detection device, thereby preventing the temperature detection device from slipping off the mounting platform assembly. In the technical solution of Embodiment 1, the connecting structure 14 includes six structures. Four connecting structures 14 are respectively disposed at the four corners of the mounting platform assembly 20, and the remaining two connecting structures 14 are respectively disposed at the two opposite sides of the mounting platform assembly 20. This ensures that the mounting platform assembly 20 is subjected to uniform force, provides a certain degree of protection for the temperature detection device, and does not obstruct the placement of the temperature detection device.

[0032] like Figure 1 As shown, in the technical solution of Embodiment 1, the installation platform assembly 20 includes an installation platform structure 21 and multiple limiting structures 22. The multiple limiting structures 22 are connected to the installation platform structure 21. The temperature detection device is mounted on the installation platform structure 21 and located between the multiple limiting structures 22. The limiting structures 22 are used to restrict the position of the temperature detection device on the installation platform structure 21, and work together with part of the connecting structure 14 to restrict the position of the temperature detection device on the installation platform structure 21 and prevent the temperature detection device from sliding. The limiting structures 22 are located on the side where there is no connecting structure 14.

[0033] like Figure 1As shown, in the technical solution of Embodiment 1, the basket rack 13 includes multiple racks, each with a first fixing position 131 and a second fixing position 132, with a predetermined distance between the first fixing position 131 and the second fixing position 132. The basket rack 13 is used to provide fixed positions for the solar cells. During the inspection process, two solar cells are typically used for temperature testing. The two solar cells are respectively positioned in the upper and lower spaces of the basket main assembly 10, corresponding to the uppermost and lowermost silicon wafers in actual production. In actual production, the temperature of the middle silicon wafer is usually within the range of the temperatures of the uppermost and lowermost silicon wafers. Therefore, in Embodiment 1, only the first fixing position 131 and the second fixing position 132 are provided, corresponding to the uppermost and lowermost silicon wafers respectively. Their actual positions can be set according to the basket model used in the production process. By only setting the first fixing position 131 and the second fixing position 132, the structure of the main component 10 of the flower basket is simplified, the cost is reduced, and the production flower basket is not needed during the temperature testing process, thus increasing its service life. Furthermore, since the actual production flower basket has many teeth, misalignment is prone to occur during the insertion of the battery cells, leading to battery cell damage. However, in Embodiment 1, only the first fixing position 131 and the second fixing position 132 are provided, and the vertical distance between them is large, thus preventing misalignment.

[0034] like Figure 1 As shown, in the technical solution of Embodiment 1, the projection of the mounting platform assembly 20 along the horizontal direction is located between the first fixed position 131 and the second fixed position 132. The vertical position of the mounting platform assembly 20 is located between the first fixed position 131 and the second fixed position 132, and its horizontal position is staggered from the first fixed position 131 and the second fixed position 132. This arrangement minimizes the length of the thermocouple wire and facilitates wiring.

[0035] like Figure 2 As shown, the difference between the technical solution of Embodiment 2 and Embodiment 1 is that the multiple limiting structures 22 are movably connected to the mounting platform structure 21. By adjusting the positions of the multiple limiting structures 22, the spacing between the multiple limiting structures 22 is changed, thereby enabling the limiting of temperature detection devices of different sizes, thus improving versatility.

[0036] like Figure 2As shown, in the technical solution of Embodiment 2, the mounting platform structure 21 has multiple elongated holes 211, which are correspondingly arranged with multiple limiting structures 22. Fasteners pass through the elongated holes 211 and connect to the limiting structures 22. Bolts are used as fasteners. The bottom of the limiting structure 22 has threaded holes that mate with the bolts. The bolts pass through the elongated holes and mate with the threaded holes. Loosening the bolts allows the position of the corresponding limiting structure 22 to be adjusted along the length of the elongated holes 211. After adjusting to the appropriate position, tightening the bolts fixes the limiting structure 22. In the technical solution of Embodiment 2, the limiting structures 22 and elongated holes 211 include four sets corresponding to the four sides of the temperature detection device. By adjusting the limiting structures 22, the movement of the temperature detection device in all four directions can be limited, resulting in good limiting effect.

[0037] like Figure 3 As shown, the difference between the technical solution of Embodiment 3 and that of Embodiment 1 is that the rack 13 includes a connecting part 133, a supporting part 134, and a force-applying part 135. The two ends of the connecting part 133 are connected to the first end plate 11 and the second end plate 12, respectively. The supporting part 134 is connected to the connecting part 133, and the force-applying part 135 is movably connected to the connecting part 133. The force-applying part 135 has a force-applying state close to the supporting part 134 and a force-waiting state away from the supporting part 134. The connecting part 133 has a threaded section, and the force-applying part 135 engages with the threaded section. Rotating the force-applying part 135 causes it to move vertically under the action of the threaded transmission, moving closer to or away from the supporting part 134. The supporting part 134 supports the battery cell, and the force-applying part 135 applies pressure to the upper surface of the battery cell. The battery cell is clamped by the supporting part 134 and the force-applying part 135, preventing the battery cell from sliding.

[0038] The difference between the technical solution of Embodiment 4 and Embodiment 1 is that the mounting platform assembly 20 and the connecting structure 14 are movably connected. The connecting structure 14 uses a screw, with bearings at both ends where it connects to the first end plate 11 and the second end plate 12. The inner ring of the bearing is fitted onto the screw, and the outer ring mates with either the first end plate 11 or the second end plate 12. Therefore, the first end plate 11 and the second end plate 12 are not affected by the rotation of the connecting structure 14. The mounting platform assembly 20 has a connecting hole that mates with the screw. When the connecting structure 14 rotates, the mounting platform assembly 20 moves vertically, causing the temperature detection device to move vertically and changing the distance between the mounting platform assembly 20 and the second end plate 12. When setting up the temperature detection device, first adjust the mounting platform assembly 20 according to the size of the temperature detection device, place the temperature detection device on the mounting platform assembly 20, and then adjust the position of the mounting platform assembly 20 again so that the mounting platform assembly 20 moves closer to the second end plate 12 until the temperature detection device contacts the second end plate 12. At this time, the temperature detection device is held by the second end plate 12 and the mounting platform assembly 20, which further prevents the temperature detection device from slipping.

[0039] The wire mesh screen printing process's sealing furnace uses the aforementioned temperature detection auxiliary basket. The furnace includes a conveying assembly, with a first end plate 11 connected to it. When checking the furnace temperature, the temperature detection auxiliary basket is placed on the conveying assembly of the furnace. The surface temperature of the solar cells is checked using a temperature detection device to determine if the furnace temperature is suitable. If the furnace temperature is suitable, no further adjustments are needed, and the furnace can be used for processing large batches of solar cells.

[0040] In summary, an integrated temperature-sensing basket (temperature detection auxiliary basket) has been designed. In existing technologies, ordinary temperature-sensing baskets have no fixed position for the battery cells, which are placed arbitrarily. Manual placement of the cells can lead to errors, causing them to twist and break. The temperature-sensing basket of this application designs the battery cells to be placed in fixed positions (first fixed position 131 and second fixed position 132), reducing the temperature differences between the upper and lower temperature zones monitored by each wire in the furnace and minimizing twisting, thus reducing the breakage rate. In existing technologies, ordinary temperature-sensing boxes (insulated boxes for housing thermocouples) have no fixed position and are unstable when placed on the front basket base during operation. This application changes this to an integrated basket with left and right railings (connecting structure 14) and a front protruding stop. In the technical solution of this application, the thermocouple wires pass through the inside of the temperature-sensing basket, avoiding direct exposure of the thermocouple wires to the outside of the basket and mitigating the safety hazards of traditional baskets.

[0041] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions of this application based on the above description.

[0042] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A temperature-detecting auxiliary flower basket, characterized in that, include: The main body component (10) of the flower basket includes a first end plate (11), a second end plate (12), a flower basket rack (13), and a connecting structure (14). The connecting structure (14) is arranged parallel to the flower basket rack (13). The two ends of the flower basket rack (13) are respectively connected to the first end plate (11) and the second end plate (12). The two ends of the connecting structure (14) are respectively connected to the first end plate (11) and the second end plate (12). The installation platform component (20) is connected to the connection structure (14), and the temperature detection device is installed on the installation platform component (20).

2. The temperature detection auxiliary flower basket according to claim 1, characterized in that, The connection structure (14) includes a plurality of such connection structures (14) which are disposed on the circumferential outer side of the mounting platform assembly (20).

3. The temperature detection auxiliary flower basket according to claim 1, characterized in that, The installation platform component (20) includes an installation platform structure (21) and multiple limiting structures (22), the multiple limiting structures (22) being connected to the installation platform structure (21), and the temperature detection device being disposed on the installation platform structure (21) and located between the multiple limiting structures (22).

4. The temperature detection auxiliary flower basket according to claim 3, characterized in that, The plurality of the limiting structures (22) are movably connected to the mounting platform structure (21).

5. The temperature detection auxiliary flower basket according to claim 3, characterized in that, The installation platform structure (21) has multiple elongated holes (211), and the multiple elongated holes (211) are provided in a one-to-one correspondence with the multiple limiting structures (22). Fasteners pass through the elongated holes (211) and are connected to the limiting structures (22).

6. The temperature detection auxiliary flower basket according to claim 1, characterized in that, The installation platform component (20) is movably connected to the connection structure (14).

7. The temperature detection auxiliary flower basket according to any one of claims 1 to 6, characterized in that, The basket rack (13) includes a plurality of racks, each having a first fixed position (131) and a second fixed position (132), with a predetermined distance between the first fixed position (131) and the second fixed position (132).

8. The temperature detection auxiliary flower basket according to claim 7, characterized in that, The projection of the mounting platform component (20) along the horizontal direction is located between the first fixed position (131) and the second fixed position (132).

9. The temperature detection auxiliary flower basket according to any one of claims 1 to 6, characterized in that, The basket rack (13) includes a connecting part (133), a supporting part (134), and a force-applying part (135). The two ends of the connecting part (133) are connected to the first end plate (11) and the second end plate (12) respectively. The supporting part (134) is connected to the connecting part (133). The force-applying part (135) is movably connected to the connecting part (133). The force-applying part (135) has a force-applying state close to the supporting part (134) and a force-waiting state away from the supporting part (134).

10. A screen printing process sealing furnace, characterized in that, The wire mesh process stopper furnace adopts a temperature detection auxiliary basket as described in any one of claims 1 to 9, and the wire mesh process stopper furnace includes a conveying assembly, wherein the first end plate (11) is connected to the conveying assembly.

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