Solar cell sintering furnace
By setting up fixed fixtures in the solar cell sintering furnace, the furnace temperature gauge and the solar cell maintain a fixed relative position during the sintering process, which solves the problem of inaccurate sintering temperature measurement and improves the production quality of solar cells.
Patent Information
- Application Number
- CN202520317161.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-26
AI Technical Summary
The existing solar cell sintering furnaces have inaccurate sintering temperature measurements, which affects the production quality of solar cells.
By setting up fixed fixtures, the solar cells and furnace temperature gauges are kept in a fixed relative position during the sintering process. The furnace temperature gauges are used to accurately measure and record the temperature changes of the solar cells, thereby achieving precise control of the sintering process.
To ensure the accuracy of temperature measurement during the solar cell sintering process, improve production quality and efficiency, and ensure that the sintering process is carried out according to the preset temperature curve, thereby improving the production quality of solar cells.
Smart Images
Figure CN223840891U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solar cell technology, and in particular to a solar cell sintering furnace. Background Technology
[0002] In the production process of solar cells, metallization sintering is required. Through high-temperature heat treatment, the metal paste coated on the surface of the silicon wafer is transformed into a metal electrode with good conductivity, and a reliable electrical connection is achieved between the electrode and the silicon substrate. However, the sintering temperature of existing solar cell sintering furnaces is difficult to measure accurately, which affects the sintering quality of solar cells and thus the production quality of solar cells. Utility Model Content
[0003] Therefore, it is necessary to provide a solar cell sintering furnace that improves upon the aforementioned defects, addressing the problem that inaccurate sintering temperature measurement in existing solar cell sintering furnaces affects the production quality of solar cells.
[0004] This application provides a solar cell sintering furnace for metallizing solar cells. The solar cell sintering furnace includes: a sintering assembly; a conveying assembly disposed within the sintering assembly for conveying the solar cell through the sintering assembly in a preset direction; and a fixing fixture disposed on the conveying assembly. The conveying assembly conveys the fixing fixture to move along the preset direction, and the fixing fixture includes a first fixing part and a second fixing part. The first fixing part is used to fix the solar cell, and the second fixing part is used to fix a furnace temperature gauge, which is used to measure the temperature of the solar cell as it passes through the sintering assembly.
[0005] By setting up fixed fixtures to fix the solar cells and furnace temperature gauges, the conveying component can ensure that the solar cells and furnace temperature gauges have a fixed relative position when conveying them through the sintering component. This ensures that the temperature measured and recorded by the furnace temperature gauge is the temperature of the same location on the solar cell when passing through the sintering component, which can accurately reflect the temperature changes during the solar cell sintering process. This ensures that the sintering process of the solar cell sintering furnace is carried out according to the preset temperature curve, guarantees the sintering quality of the solar cells, and improves the production quality of solar cells.
[0006] In some embodiments, the fixing fixture further includes a connecting portion disposed between the first fixing portion and the second fixing portion, the connecting portion connecting the first fixing portion and the second fixing portion, the furnace temperature gauge including a main body and a temperature measuring portion, the main body being fixed to the second fixing portion, and the temperature measuring portion passing through the connecting portion and correspondingly disposed with the solar cell to measure the temperature of the solar cell.
[0007] In some embodiments, the first fixing part is a hollow structure so that the furnace temperature gauge can measure the temperature of the surface of the solar cell near the first fixing part.
[0008] In some embodiments, the temperature measuring unit includes at least a first temperature measuring unit and a second temperature measuring unit, and the solar cell includes a first surface away from the first fixing part and a second surface close to the first fixing part. The first temperature measuring unit and the second temperature measuring unit are respectively used to measure the temperature of the first surface and the second surface.
[0009] In some embodiments, the first temperature measuring unit and the second temperature measuring unit are respectively used to measure the temperature of the geometric center of the first surface and the second surface.
[0010] In some embodiments, the temperature measuring element is a thermocouple, which is attached to the surface of the solar cell.
[0011] In some embodiments, the first fixing part includes at least a first step and a second step of different sizes to accommodate solar cells of different sizes.
[0012] In some embodiments, the fixing fixture further includes a holding portion for holding the fixing fixture.
[0013] In some embodiments, the sintering assembly includes at least a drying zone, a sintering zone, and a cooling zone arranged sequentially along the preset direction.
[0014] In some embodiments, the conveying assembly includes a plurality of conveying rollers spaced apart along the preset direction, the conveying rollers being rotatable along their own axis to convey the fixed fixture along the preset direction. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the solar cell sintering furnace at one angle in an embodiment of this utility model;
[0016] Figure 2 for Figure 1 A magnified view of a portion of position A in the middle;
[0017] Figure 3 This is a schematic diagram of the solar cell sintering furnace from another angle in an embodiment of this utility model;
[0018] Figure 4 for Figure 3 A magnified view of a portion of position B in the middle;
[0019] Figure 5 for Figure 1 An enlarged view of the front view;
[0020] Figure 6This is a schematic diagram of the structure of the fixing tool in the embodiment of this utility model;
[0021] Figure 7 for Figure 6 Top view;
[0022] Figure 8 for Figure 7 Sectional view along CC;
[0023] Figure 9 This is a schematic diagram of the structure after the solar cell and furnace temperature gauge are placed in the fixed fixture in this embodiment of the present invention;
[0024] Figure 10 for Figure 9 Top view.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1 Solar cell sintering furnace; 11 Sintering module, 111 Drying zone, 112 Sintering zone, 113 Cooling zone, 114 Infrared lamp; 12 Conveying module, 121 Conveying roller; 13 Fixing fixture, 131 First fixing part, 1311 First step, 1312 Second step, 132 Second fixing part, 133 Connecting part, 134 Holding part;
[0027] 2 solar cells, 21 first surface, 22 second surface;
[0028] 3 Furnace temperature gauge, 31 Main body, 32 Temperature measuring part, 321 First temperature measuring part, 322 Second temperature measuring part;
[0029] X is the preset direction. Detailed Implementation
[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.
[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0036] To better understand the embodiments of this application, the following is combined with... Figures 1 to 10 The embodiments of this application will be described in detail.
[0037] like Figures 1 to 10 As shown, this application provides a solar cell sintering furnace for metallizing solar cells 2. The solar cell sintering furnace includes a sintering assembly 11, a conveying assembly 12, and a fixing fixture 13. The conveying assembly 12 is inserted into the sintering assembly 11 and is used to convey the solar cell 2 through the sintering assembly 11 along a preset direction X. The fixing fixture 13 is disposed on the conveying assembly 12, and the conveying assembly 12 conveys the fixing fixture 13 to move along the preset direction X. The fixing fixture 13 includes a first fixing part 131 and a second fixing part 132. The first fixing part 131 is used to fix the solar cell 2, and the second fixing part 132 is used to fix a furnace temperature gauge 3. The furnace temperature gauge 3 is used to measure the temperature of the solar cell 2 as it passes through the sintering assembly 11.
[0038] The sintering component 11 refers to providing a sintering temperature so that the solar cell 2 can transform the metal paste coated on the silicon wafer surface into a highly conductive metal electrode in a high-temperature environment. The sintering process can achieve a reliable electrical connection between the electrode and the silicon substrate.
[0039] In some embodiments, the sintering component 11 can be a resistance heater, which generates Joule heat by passing an electric current through a resistive material (such as a silicon carbide rod, tungsten wire, molybdenum wire, etc.) to heat the solar cell sintering furnace. Alternatively, the sintering component 11 can also heat the surface of the solar cell 2 using methods such as lasers or high-frequency induction; this application does not limit the scope of the embodiments.
[0040] The conveying component 12 refers to the component that conveys the solar cell 2 along a preset direction X. Specifically, in some embodiments, the conveying component 12 can be a mesh belt conveyor, using a high-temperature resistant metal mesh belt (such as stainless steel or nickel-based alloy) as a carrier, and continuously conveying the solar cell 2 along the preset direction X via a motor drive; in other embodiments, the conveying component 12 can also be a roller conveyor, using a high-temperature resistant ceramic roller or alloy roller, causing the roller to rotate via a motor, thereby pushing the solar cell 2 to move along the preset direction X within the sintering component 11. It should be noted that the conveying component 12 in the embodiments of this application can also be other conveying devices such as chain conveyors or belt conveyors, and the embodiments of this application do not limit this.
[0041] The conveying component 12 is installed in the sintering component 11. That is, when the conveying component 12 conveys the solar cell 2, it can convey the solar cell 2 from the inlet end of the sintering component 11 to the outlet end of the sintering component 11, so that the solar cell 2 passes through the sintering component 11 while moving along the preset direction X, thereby completing the sintering process of the solar cell 2. This allows the entire sintering process to be carried out continuously, which can improve the production efficiency of the solar cell 2.
[0042] The fixing fixture 13 is a component placed on the conveying assembly 12. When the conveying assembly 12 moves along the preset direction X, it can also move the fixing fixture 13 along the preset direction X. The fixing fixture 13 is provided with a first fixing part 131 and a second fixing part 132. The first fixing part 131 is used to fix the solar cell 2, and the second fixing part 132 is used to fix the furnace temperature gauge 3. In this way, on the one hand, the solar cell 2 and the furnace temperature gauge 3 can also move along the preset direction X under the conveying of the conveying assembly 12; on the other hand, when the solar cell 2 and the furnace temperature gauge 3 move along the preset direction X, they can always remain relatively fixed, ensuring that the temperature measured and recorded by the furnace temperature gauge 3 is the temperature of the same position of the solar cell 2, so that the furnace temperature gauge 3 can accurately reflect the temperature changes during the sintering process of the solar cell.
[0043] The furnace temperature instrument 3 is an instrument for measuring and recording the temperature of the solar cell 2. The temperature measurement method of the furnace temperature instrument 3 can be a contact temperature measurement method such as a thermocouple, or a non-contact temperature measurement method such as an infrared thermometer or a thermal imager. This application embodiment does not limit this.
[0044] When the conveying assembly 12 is a mesh belt conveyor, the relative position between the solar cell 2 and the furnace temperature gauge 3 will change due to vibration during the conveying process, causing the temperature gauge 3 to measure a different position and affecting the accuracy of temperature measurement. Similarly, when the conveying assembly 12 is a roller conveyor, the difference in rotational speed between the rollers will also cause a change in the relative position between the solar cell 2 and the furnace temperature gauge 3, affecting the accuracy of temperature measurement.
[0045] In this application, a fixed fixture 13 is used to fix the solar cell 2 and the furnace temperature gauge 3. The conveying assembly 12 ensures a fixed relative position between the solar cell 2 and the furnace temperature gauge 3 as they pass through the sintering assembly 11. This ensures that the temperature measured and recorded by the furnace temperature gauge 3 at the same location on the solar cell 2 during passage through the sintering assembly 11. Since the sintering process of the solar cell 2 involves preheating, peak sintering, and cooling, and each stage has strict requirements for the temperature-time curve, maintaining a fixed relative position ensures that the temperature measured and recorded by the furnace temperature gauge 3 is the temperature at a fixed measuring point on the solar cell 2. This allows for real-time tracking of temperature changes at specific locations. On one hand, this ensures that the sintering process of the solar cell sintering furnace follows a preset temperature curve; on the other hand, it allows for monitoring of the furnace's operation, ensuring the sintering quality of the solar cell 2 and improving the overall production quality of the solar cell 2.
[0046] like Figures 3 to 5 As shown, in some embodiments, the sintering assembly 11 includes infrared lamps 114, with multiple infrared lamps 114 spaced apart along a preset direction X. The infrared radiation generated by the infrared lamps 114 directly heats the surface of the solar cell 2. Compared with other heating methods, using infrared lamps 114 to heat the surface of the solar cell 2 has the advantage of fast thermal response, enabling rapid heating of the solar cell 2 and improving the production efficiency of the solar cell 2. Furthermore, by setting multiple infrared lamps 114 spaced apart along a preset direction X, temperature control in specific areas can be achieved, providing sintering conditions at different temperatures, resulting in better metallization sintering quality of the solar cell 2.
[0047] like Figure 5 As shown, in some embodiments, infrared lamps 114 are provided on both the upper and lower sides of the conveying component 12. This ensures that there are temperature sources on both sides of the solar cell 2, which can improve the heating efficiency of the solar cell 2 while ensuring that both sides of the solar cell 2 can be adjusted independently, thereby improving the sintering quality of the solar cell 2.
[0048] like Figures 6 to 10 As shown, in some embodiments, the fixing fixture 13 further includes a connecting part 133 disposed between the first fixing part 131 and the second fixing part 132. The connecting part 133 connects the first fixing part 131 and the second fixing part 132. The furnace temperature instrument 3 includes a main body part 31 and a temperature measuring part 32. The main body part 31 is fixed to the second fixing part 132. The temperature measuring part 32 passes through the connecting part 133 and is disposed corresponding to the solar cell 2 to measure the temperature of the solar cell 2.
[0049] The temperature measuring unit 32 can be a contact temperature measuring instrument such as a thermocouple, or a non-contact temperature measuring instrument such as an infrared thermometer or a thermal imager. This application embodiment does not limit this.
[0050] The connecting part 133 is a notch provided between the first fixing part 131 and the second fixing part 132. By providing the connecting part 133, the first fixing part 131 and the second fixing part 132 can be connected, so that the temperature measuring part 32 of the furnace temperature instrument 3 can be physically connected to the main body part 31 through the connecting part 133, and the temperature measured by the temperature measuring part 31 can be transmitted.
[0051] like Figure 6 , 7 as well as Figure 10 As shown, in some embodiments, the first fixing part 131 has a hollow structure so that the furnace temperature instrument 3 can measure the temperature of the surface of the solar cell 2 near the first fixing part 131.
[0052] By setting the first fixing part 131 as a hollow structure, the surface of the solar cell 2 near the first fixing part 131 can be exposed. On the one hand, it is convenient for heat to be transferred from the hollow structure to the surface of the solar cell 2 near the first fixing part 131; on the other hand, it is convenient to measure the temperature of the surface of the solar cell 2 near the first fixing part 131.
[0053] like Figure 9 and Figure 10 As shown, in some embodiments, the temperature measuring unit 32 includes at least a first temperature measuring unit 321 and a second temperature measuring unit 322. The solar cell 2 includes a first surface 21 away from the first fixing part 131 and a second surface 22 close to the first fixing part 131. The first temperature measuring unit 321 and the second temperature measuring unit 322 are respectively used to measure the temperature of the first surface and the second surface.
[0054] The temperature measuring unit 32 includes at least a first temperature measuring unit 321 and a second temperature measuring unit 322. The first temperature measuring unit 321 and the second temperature measuring unit 322 can be the same temperature measuring instrument or different temperature measuring instruments. This application embodiment does not limit this. It should be noted that in some embodiments, the temperature measuring unit 32 may also be provided with more than two temperature measuring units as needed. This application embodiment does not limit this.
[0055] By setting a first temperature measuring unit 321 and a second temperature measuring unit 322 to measure the temperature of the first surface 21 and the second surface 22 respectively, the temperature of the first surface 21 and the second surface 22 of the solar cell 2 can be recorded in real time. This can be adapted to the process requirements where the first surface 21 and the second surface 22 need to follow different temperature-time curves. On the other hand, it can also prevent the solar cell 2 from warping or cracking due to uneven thermal expansion caused by an excessive temperature difference between the first surface 21 and the second surface 22, thereby improving the production quality of the solar cell 2.
[0056] In some embodiments, the first temperature measuring unit 321 and the second temperature measuring unit 322 are respectively used to measure the temperature of the geometric center of the first surface 21 and the second surface 22.
[0057] Since the geometric center of the solar cell 2 is easy to accurately locate, the accurate positioning of the measuring unit 32 can be guaranteed, and the reading deviation caused by the offset of the temperature measuring point can be avoided, thereby further improving the measurement accuracy of the furnace temperature instrument 3.
[0058] like Figure 9 and Figure 10 As shown, in some embodiments, the temperature measuring unit 32 is a thermocouple, which is attached to the surface of the solar cell 2.
[0059] The temperature measuring unit 32 is a thermocouple, that is, the furnace temperature instrument 3 uses a contact temperature measurement method to measure the temperature of the solar cell 2. Compared with the non-contact measurement method, the thermocouple directly conducts heat through physical contact, which can reduce environmental interference (such as air flow, dust, steam, etc.), improve measurement accuracy, and ensure the production quality of the solar cell 2.
[0060] like Figures 6 to 8 As shown, in some embodiments, the first fixing part 131 includes at least a first step 1311 and a second step 1312 of different sizes to accommodate solar cells 2 of different sizes.
[0061] By setting a first step 1311 and a second step 1312 of different sizes, solar cells 2 of different sizes can be fixed on the first step 1311 and the second step 1312 respectively when they are produced, thereby completing the production of solar cells 2 of different sizes and improving the applicability of the equipment.
[0062] It should be noted that, depending on actual production needs, the first fixing part 131 may also be provided with two or more steps, and this application embodiment does not limit this.
[0063] like Figures 6 to 10 As shown, in some embodiments, the fixing fixture 13 further includes a holding part 134 for holding the fixing fixture 13.
[0064] By setting the holding part 134, the fixed tooling 134 can be easily removed from or placed on the conveying assembly 12, thereby facilitating the loading and unloading of the solar cell 2 and the furnace temperature gauge 3.
[0065] like Figure 1 and Figure 3 As shown, in some embodiments, the sintering assembly 11 includes at least a drying zone 111, a sintering zone 112, and a cooling zone 113 arranged sequentially along a preset direction X.
[0066] The sintering assembly 11 includes at least a drying zone 111, a sintering zone 112, and a cooling zone 113 arranged sequentially along a preset direction X. That is, the solar cell 2 passes through the drying zone 111, the sintering zone 112, and the cooling zone 113 sequentially under the transport of the transport assembly 12. The drying zone 111 can provide a stable precursor for the sintering process of the solar cell 2, the sintering zone 112 can optimize the electrical performance of the solar cell 2, and the cooling zone 113 can ensure the reliability of the sintering structure of the solar cell 2 and improve the sintering quality of the solar cell 2.
[0067] like Figures 1 to 4 As shown, in some embodiments, the conveying assembly 12 includes a plurality of conveying rollers 121 spaced apart along a preset direction X. The conveying rollers 121 can rotate along their own axis to convey the fixed fixture 13 along the preset direction X.
[0068] That is, the conveying component 12 is a roller conveying device. The fixed tooling 13 is conveyed along the preset direction X by the rotation of the conveying roller 121. Compared with the mesh chain conveying device, the conveying roller 121 can provide a more stable conveying environment and can avoid the solar cell 2 from shaking during the conveying process, which would affect the measurement accuracy.
[0069] Specifically, such as Figures 1 to 10 As shown, firstly, the solar cell 2 and the furnace temperature gauge 3 are fixed in the first fixing part 131 and the second fixing part 132 of the fixing fixture 13, respectively. Then, the conveying assembly 12 conveys the fixing fixture 13 and the solar cell 2 and furnace temperature gauge 3 fixed thereon into the sintering assembly 11 along a preset direction X. During the passage through the sintering assembly 11, the temperature measuring part 31 of the furnace temperature gauge 3 measures the surface temperature of the solar cell 2 in real time. After the solar cell 2 and the furnace temperature gauge 3 have completely passed through the sintering assembly 11, the furnace temperature gauge obtains a temperature change curve at a specific location on the solar cell 2. This temperature change curve is compared with the preset temperature curve of the sintering process to determine the working condition of the solar cell sintering furnace and the sintering quality of the solar cell 2.
[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0071] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A solar cell sintering furnace for metallizing and sintering solar cells, characterized in that, The solar cell sintering furnace includes: Sintered components; A conveying assembly, inserted into the sintering assembly, is used to convey the solar cell through the sintering assembly in a predetermined direction; and A fixing fixture is disposed on the conveying assembly, the conveying assembly conveys the fixing fixture to move along the preset direction, and the fixing fixture includes a first fixing part and a second fixing part, the first fixing part is used to fix the solar cell, and the second fixing part is used to fix the furnace temperature gauge, the furnace temperature gauge is used to measure the temperature of the solar cell when it passes through the sintering assembly.
2. The solar cell sintering furnace according to claim 1, characterized in that, The fixing fixture further includes a connecting part disposed between the first fixing part and the second fixing part, the connecting part connecting the first fixing part and the second fixing part, the furnace temperature instrument includes a main body and a temperature measuring part, the main body is fixed to the second fixing part, and the temperature measuring part passes through the connecting part and is disposed corresponding to the solar cell to measure the temperature of the solar cell.
3. The solar cell sintering furnace according to claim 2, characterized in that, The first fixing part has a hollow structure so that the furnace temperature instrument can measure the temperature of the surface of the solar cell near the first fixing part.
4. The solar cell sintering furnace according to claim 3, characterized in that, The temperature measuring unit includes at least a first temperature measuring unit and a second temperature measuring unit. The solar cell includes a first surface away from the first fixing part and a second surface close to the first fixing part. The first temperature measuring unit and the second temperature measuring unit are respectively used to measure the temperature of the first surface and the second surface.
5. The solar cell sintering furnace according to claim 4, characterized in that, The first temperature measuring unit and the second temperature measuring unit are used to measure the temperature of the geometric center of the first surface and the second surface, respectively.
6. The solar cell sintering furnace according to claim 2, characterized in that, The temperature measuring unit is a thermocouple, which is attached to the surface of the solar cell.
7. The solar cell sintering furnace according to any one of claims 1 to 6, characterized in that, The first fixing part includes at least a first step and a second step of different sizes to accommodate solar cells of different sizes.
8. The solar cell sintering furnace according to any one of claims 1 to 6, characterized in that, The fixing fixture also includes a holding part for holding the fixing fixture.
9. The solar cell sintering furnace according to any one of claims 1 to 6, characterized in that, The sintering assembly includes at least a drying zone, a sintering zone, and a cooling zone arranged sequentially along the preset direction.
10. The solar cell sintering furnace according to any one of claims 1 to 6, characterized in that, The conveying assembly includes a plurality of conveying rollers spaced apart along the preset direction. The conveying rollers are rotatable along their own axes to convey the fixed tooling along the preset direction.