Slow lifting device, texturing system and solar cell manufacturing production line
By designing a preheating tube assembly in the slow lifting device, the heat recovery and reuse of hot water is realized, solving the problem of high energy consumption in the traditional slow lifting process and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-07
AI Technical Summary
In the traditional slow lifting process, the heat from the hot water cannot be recovered and utilized, resulting in high energy consumption.
The preheating pipe assembly is designed to connect the cold water source and the inlet of the hot water machine, allowing the cold water to exchange heat with the hot water in the slow-lift sub-tank, thus recovering and reusing the heat.
The heat exchange process reduces energy consumption and the time and energy required to heat cold water to a certain temperature.
Smart Images
Figure CN224094629U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of solar cell technology, specifically to a slow lifting device, a texturing system, and a solar cell manufacturing production line. Background Technology
[0002] During the manufacturing process of solar cells, texturing is required on the cells. The principle of texturing is to form a micron-scale textured surface on the cell surface through chemical etching, thereby reducing light reflectivity and enhancing light absorption.
[0003] After texturing, the battery cells require post-processing, which includes acid washing (to neutralize residual alkali), slow-lift dehydration (to reduce drying marks), and heat-sealing drying. The slow-lift dehydration process uses hot water at approximately 70°C to clean and dehydrate the battery cells. A robotic arm slowly lifts the cells to remove surface moisture, reduce water droplet carryover, shorten drying time, and prevent marks from remaining after drying.
[0004] In the traditional slow pulling process, the hot water used to clean the solar cells is directly discharged as wastewater, and the heat from the hot water cannot be recovered and utilized, resulting in high energy consumption. Utility Model Content
[0005] Therefore, it is necessary to provide a slow lifting device, a texturing system, and a solar cell manufacturing production line that can reduce energy consumption to address the above problems.
[0006] A slow lifting device, the slow lifting device comprising:
[0007] A slow lifting assembly includes a slow lifting body and a slow lifting accessory. The slow lifting body has a slow lifting main groove, and the slow lifting accessory has a slow lifting secondary groove. The slow lifting main groove and the slow lifting secondary groove are connected.
[0008] A preheating pipe assembly and a water heater are provided. The preheating pipe assembly is installed on the slow-lifting accessory and is at least partially located in the slow-lifting secondary groove. The preheating pipe assembly is connected between a cold water source and the inlet of the water heater. The outlet of the water heater is connected to the slow-lifting main groove.
[0009] In some embodiments, the preheating pipe assembly includes an inlet pipe, an outlet pipe, and a preheating pipe. The inlet pipe and the outlet pipe are both installed on the slow-lifting accessory, and both the inlet pipe and the outlet pipe partially extend into the slow-lifting sub-groove. The inlet pipe is connected to the cold water source, and the outlet pipe is connected to the inlet end of the water heater. The preheating pipe is located in the slow-lifting sub-groove and is connected between the inlet pipe and the outlet pipe.
[0010] In some embodiments, the preheating tube is a capillary coil, and there are multiple capillary coils, all of which are connected between the water inlet pipe and the water outlet pipe.
[0011] In some embodiments, the preheating tube is a perfluoroalkoxy resin tube.
[0012] In some embodiments, the slow lifting device further includes a float level switch, an alarm, and a power supply. The float level switch is disposed in the slow lifting sub-tank and has a low-position normally open contact. One end of the low-position normally open contact is electrically connected to the positive terminal of the power supply, and the alarm is electrically connected between the other end of the low-position normally open contact and the negative terminal of the power supply.
[0013] In some embodiments, the slow lifting assembly further includes an overflow pipe that connects the main slow lifting groove and the secondary slow lifting groove.
[0014] In some embodiments, the slow lifting assembly further includes a waste discharge pipe, which is installed at the bottom of the slow lifting accessory and communicates with the slow lifting sub-slot.
[0015] In some embodiments, the slow-lifting assembly further includes a hot water pipe connected between the outlet of the water heater and the slow-lifting main channel.
[0016] A flocking system comprising a slow lifting device as described in any of the above embodiments.
[0017] A solar cell manufacturing production line includes a texturing system as described in the above embodiments.
[0018] Compared with the prior art, this application has the following beneficial effects:
[0019] The aforementioned slow-lift device, texturing system, and solar cell manufacturing production line are designed with a preheating pipe assembly connected between the cold water source and the inlet of the hot water unit. Therefore, the cold water from the cold water source can exchange heat with the hot water in the slow-lift sub-tank, thus preheating it and raising its temperature. During this heat exchange process, the heat exchanged with the hot water in the slow-lift sub-tank can be recovered and reused, reducing energy consumption. Furthermore, the time and energy required for the preheated cold water to reach a certain temperature in the hot water unit are significantly reduced, further minimizing energy consumption. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the slow lifting device in one embodiment of this application;
[0021] Figure 2 for Figure 1The diagram shows the structure of the capillary coil in the slow lifting sub-groove of the slow lifting device, in conjunction with the inlet and outlet pipes.
[0022] Icon labels:
[0023] 1. Slow lifting device; 2. Cold water source;
[0024] 10. Slow-lift assembly; 20. Preheating pipe assembly; 30. Water heater;
[0025] 11. Slow lifting main body; 111. Slow lifting main channel; 12. Slow lifting auxiliary body; 121. Slow lifting secondary channel; 13. Overflow pipe; 14. Waste discharge pipe; 15. Hot water pipe;
[0026] 21. Water inlet pipe; 22. Water outlet pipe; 23. Preheating pipe. Detailed Implementation
[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application 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 application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "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 based on the orientation or positional relationship shown in the accompanying drawings, 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.
[0029] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0030] In this application, unless otherwise expressly 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0031] In this application, unless otherwise expressly 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.
[0032] 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.
[0033] During the manufacturing process of solar cells, texturing is required on the cells. The principle of texturing is to form a micron-scale textured surface on the cell surface through chemical etching, thereby reducing light reflectivity and enhancing light absorption.
[0034] After texturing, the battery cells require post-processing, which includes acid washing (to neutralize residual alkali), slow-lift dehydration (to reduce drying marks), and heat-sealing drying. The slow-lift dehydration process uses hot water at approximately 70°C to clean and dehydrate the battery cells. A robotic arm slowly lifts the cells to remove surface moisture, reduce water droplet carryover, shorten drying time, and prevent marks from remaining after drying.
[0035] In the traditional slow pulling process, the hot water used to clean the solar cells is directly discharged as wastewater, and the heat from the hot water cannot be recovered and utilized, resulting in high energy consumption.
[0036] Please see Figure 1 and Figure 2To alleviate the aforementioned problems, this application provides a slow-lifting device 1, which includes a slow-lifting assembly 10, a preheating pipe assembly 20, and a water heater 30. The slow-lifting assembly 10 includes a slow-lifting main body 11 and a slow-lifting accessory 12. The slow-lifting main body 11 has a slow-lifting main groove 111, and the slow-lifting accessory 12 has a slow-lifting secondary groove 121. The slow-lifting main groove 111 and the slow-lifting secondary groove 121 are connected. The preheating pipe assembly 20 is installed on the slow-lifting accessory 12 and is at least partially located within the slow-lifting secondary groove 121. The preheating pipe assembly 20 is connected between a cold water source 2 and the inlet of the water heater 30, and the outlet of the water heater 30 is connected to the slow-lifting main groove 111.
[0037] Specifically, the outlet of the water heater 30 is connected to the slow-lifting main tank 111. The water heater 30 heats cold water to a certain temperature (e.g., around 70°C) and then inputs the hot water into the slow-lifting main tank 111. The slow-lifting main tank 111 provides a space for cleaning and dehydrating the battery cells. Since the water heater 30 continuously inputs hot water into the slow-lifting main tank 111 during the cleaning process, the hot water in the slow-lifting main tank 111 is always overflowing. The slow-lifting auxiliary tank 121 receives the overflowing hot water from the slow-lifting main tank 111 to prevent hot water from overflowing and contaminating the external environment where the slow-lifting device 1 is located. The preheating tube assembly 20 is connected between the cold water source 2 and the water inlet of the water heater 30. The cold water from the cold water source 2 flows into the preheating tube assembly 20, and after exchanging heat with the hot water in the slow lifting sub-tank 121, it flows into the water heater 30. Then, the water heater 30 reheats the water and delivers it to the slow lifting main tank 111 to clean the battery cells.
[0038] In the existing technology, cold water from cold water source 2 flows directly into water heater 30 for heating before being delivered to the slow-lifting main tank 111 for cleaning battery cells. Heating the cold water to a certain temperature requires a significant amount of energy from the water heater 30, resulting in high energy consumption. Furthermore, the hot water that overflows into the slow-lifting auxiliary tank 121 after cleaning is directly discharged as wastewater to the outside, meaning the heat from the hot water cannot be recovered, further increasing energy consumption.
[0039] In this application, by designing the preheating pipe assembly 20 to connect the cold water source 2 and the inlet of the hot water unit 30, the cold water from the cold water source 2 can exchange heat with the hot water in the slow-lift sub-tank 121 to preheat it, thus raising its temperature. During the heat exchange process, the heat exchanged with the hot water in the slow-lift sub-tank 121 can be recovered and reused, reducing energy consumption. In addition, the time and energy required for the heated cold water to be heated to a certain temperature in the hot water unit 30 are both reduced, further reducing energy consumption.
[0040] Practical verification shows that preheated cold water can increase its temperature by 10℃-20℃, which shortens the heating time of the water heater and thus reduces energy consumption. See Table 1 below for details.
[0041] Table 1
[0042] Time (month) Cold water temperature before preheating Preheated cold water temperature difference January-February 14℃ 34℃ 20℃ March-April 20℃ 35℃ 15℃ May-June 24℃ 36℃ 12℃ July to October 25℃ 38℃ 13℃ November-December 16℃ 34℃ 18℃
[0043] In some embodiments, the preheating pipe assembly 20 includes an inlet pipe 21, an outlet pipe 22, and a preheating pipe 23. The inlet pipe 21 and the outlet pipe 22 are both installed on the slow-lifting accessory 12, and both the inlet pipe 21 and the outlet pipe 22 partially extend into the slow-lifting sub-groove 121. The inlet pipe 21 is connected to the cold water source 2, and the outlet pipe 22 is connected to the water inlet end of the water heater 30. The preheating pipe 23 is located in the slow-lifting sub-groove 121 and is connected between the inlet pipe 21 and the outlet pipe 22.
[0044] In actual operation, the cold water from cold water source 2 flows through the inlet pipe 21, passes through the preheating pipe 23, and then reaches the water heater 30 for heating through the outlet pipe 22. Since the preheating pipe 23 is located in the slow-lifting auxiliary tank 121, the cold water can exchange heat with the hot water in the slow-lifting auxiliary tank 121 during the process of flowing through the preheating pipe 23, and then form cold water with a higher temperature before reaching the water heater 30.
[0045] The inlet pipe 21, outlet pipe 22 and preheating pipe 23 are installed so that heat can be recovered and cold water source 2 can be supplied to water heater 30, making the slow lifting device 1 reliable and energy-efficient.
[0046] In some embodiments, the preheating pipe 23 is a capillary coil, and there are multiple capillary coils, all of which are connected between the water inlet pipe 21 and the water outlet pipe 22. As an example, the capillary coil is arranged in the slow lifting sub-trough 121 and is spiraled along the height direction of the slow lifting sub-trough 121.
[0047] This design effectively disperses the cold water in the inlet pipe 21 into each capillary coil before it flows into the water heater 30 through the outlet pipe 22. Dispersing the cold water into each capillary coil increases the heat exchange area between the cold and hot water, improving the heat exchange effect and allowing the cold water to heat up more significantly. This, in turn, improves the energy utilization rate of the slow-lift device, thereby reducing energy consumption.
[0048] In some embodiments, the preheating tube 23 is a perfluoroalkoxy resin (PFA) tube.
[0049] Perfluoroalkoxy resin tubes are resistant to high temperatures and corrosion. They are less likely to react with residual chemicals after cleaning battery cells in hot water, and are less affected by the high temperature of hot water. They are less likely to be damaged or aged, and have a longer service life.
[0050] In some embodiments, the slow lifting device 1 further includes a float level switch, an alarm, and a power supply. The float level switch is disposed in the slow lifting sub-slot 121 and has a low-position normally open contact. One end of the low-position normally open contact is electrically connected to the positive terminal of the power supply, and the alarm is electrically connected between the other end of the low-position normally open contact and the negative terminal of the power supply.
[0051] In actual operation, when the liquid level drops to the low level, the float will trigger the low-level normally open contact to close, connecting the circuit formed by the low-level normally open contact, the power supply, and the alarm, thus activating the alarm and achieving low-level alarm.
[0052] The lowest level detected by the float level switch is the lowest position the float can descend to in hot water. When the liquid level drops to this position, the float will descend accordingly, triggering the normally open low-level contact to close.
[0053] It is understandable that the more hot water in the slow-lifting auxiliary tank 121, the more heat it provides during heat exchange with the cold water in the preheating pipe 23, resulting in better heat exchange and lower energy consumption of the slow-lifting device 1. Conversely, the less hot water in the slow-lifting auxiliary tank 121, the worse the heat exchange and the higher the energy consumption. Therefore, preferably, the liquid level in the slow-lifting auxiliary tank 121 is usually maintained at a higher position. A low-level alarm indicates a malfunction.
[0054] In this application, by designing a float level switch, an alarm and a power supply, the alarm can provide a low-level alarm to indicate a fault, enabling staff to promptly detect and troubleshoot the fault, and ensuring that the slow lifting device 1 can work normally.
[0055] In some embodiments, the slow lifting assembly 10 further includes an overflow pipe 13, which is connected between the slow lifting main tank 111 and the slow lifting secondary tank 121, so that the hot water in the slow lifting main tank 111 can overflow into the slow lifting secondary tank 121, thereby preventing the hot water from overflowing and polluting the external environment where the slow lifting device 1 is located.
[0056] In some embodiments, the slow-lift assembly 10 further includes a waste drain pipe 14, which is installed at the bottom of the slow-lift accessory 12 and communicates with the slow-lift sub-slot 121. Hot water overflowing into the slow-lift sub-slot 121 is discharged through the waste drain pipe 14 to prevent the slow-lift sub-slot 121 from overflowing and polluting the external environment where the slow-lift device 1 is located.
[0057] In some embodiments, the slow lifting assembly 10 further includes a hot water pipe 15, which is connected between the water outlet of the water heater 30 and the slow lifting main tank 111, so that the hot water generated by heating in the water heater 30 can be transported to the slow lifting main tank 111 through the hot water pipe 15 and clean the battery cells.
[0058] This application also provides a flocking system, which includes a flocking device and a slow lifting device 1 as described in any of the above embodiments.
[0059] The texturing device is used to texturize the battery cells, and the slow lifting device 1 is used to clean and dehydrate the texturized battery cells.
[0060] The flocking system in this application has the effects of any of the above embodiments, and therefore will not be described in detail here.
[0061] This application also provides a solar cell manufacturing production line, which includes a texturing system as described in the above embodiments.
[0062] The solar cell manufacturing production line in this application has the effects of any of the above embodiments, and therefore will not be described in detail here.
[0063] The aforementioned slow-lifting device 1, texturing system, and solar cell manufacturing production line are designed with a preheating pipe assembly 20 connected between the cold water source 2 and the inlet of the hot water unit 30. Therefore, the cold water from the cold water source 2 can exchange heat with the hot water in the slow-lifting auxiliary tank 121 to preheat it, increasing its temperature. During this heat exchange process, the heat exchanged with the hot water in the slow-lifting auxiliary tank 121 can be recovered and reused, reducing energy consumption. Furthermore, the time and energy required for the heated cold water to reach a certain temperature in the hot water unit 30 are significantly reduced, further minimizing energy consumption.
[0064] 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.
[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A slow lifting device, characterized in that, The slow lifting device includes: The slow lifting assembly (10) includes a slow lifting body (11) and a slow lifting accessory (12). The slow lifting body (11) has a slow lifting main groove (111), and the slow lifting accessory (12) has a slow lifting secondary groove (121). The slow lifting main groove (111) and the slow lifting secondary groove (121) are connected. The preheating pipe assembly (20) and the water heater (30) are installed on the slow-lifting accessory (12) and are at least partially located in the slow-lifting sub-slot (121). The preheating pipe assembly (20) is connected between the cold water source (2) and the inlet of the water heater (30). The outlet of the water heater (30) is connected to the slow-lifting main slot (111).
2. The slow lifting device according to claim 1, characterized in that, The preheating pipe assembly (20) includes an inlet pipe (21), an outlet pipe (22), and a preheating pipe (23). The inlet pipe (21) and the outlet pipe (22) are both installed on the slow-lifting accessory (12), and the inlet pipe (21) and the outlet pipe (22) both partially extend into the slow-lifting sub-groove (121). The inlet pipe (21) is connected to the cold water source (2), and the outlet pipe (22) is connected to the water inlet of the water heater (30). The preheating pipe (23) is located in the slow-lifting sub-groove (121) and is connected between the inlet pipe (21) and the outlet pipe (22).
3. The slow lifting device according to claim 2, characterized in that, The preheating pipe (23) is a capillary coil, and there are multiple capillary coils, all of which are connected between the water inlet pipe (21) and the water outlet pipe (22).
4. The slow lifting device according to claim 2 or 3, characterized in that, The preheating pipe (23) is a perfluoroalkoxy resin pipe.
5. The slow lifting device according to claim 1, characterized in that, The slow lifting device also includes a float level switch, an alarm and a power supply. The float level switch is located in the slow lifting sub-tank (121) and has a low-position normally open contact. One end of the low-position normally open contact is electrically connected to the positive terminal of the power supply, and the alarm is electrically connected between the other end of the low-position normally open contact and the negative terminal of the power supply.
6. The slow lifting device according to claim 1, characterized in that, The slow lifting assembly (10) also includes an overflow pipe (13), which is connected between the slow lifting main groove (111) and the slow lifting secondary groove (121).
7. The slow lifting device according to claim 1, characterized in that, The slow lifting assembly (10) also includes a waste discharge pipe (14), which is installed at the bottom of the slow lifting accessory (12) and communicates with the slow lifting sub-slot (121).
8. The slow lifting device according to claim 1, characterized in that, The slow lifting assembly (10) also includes a hot water pipe (15), which is connected between the outlet of the water heater (30) and the slow lifting main channel (111).
9. A flocking system, characterized in that, The flocking system includes a slow lifting device as described in any one of claims 1 to 8.
10. A solar cell manufacturing production line, characterized in that, Includes the flocking system as described in claim 9 above.