Sectional type laser welding device for TOPCon-0BB assembly
By integrating cold strip serpentine channels and heat dissipation components into the laser welding device, the real-time cooling problem during welding was solved, ensuring the safety of the passivation layer of TOPCon solar cells and improving welding quality and production efficiency.
Patent Information
- Application Number
- CN202511963223.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-24
- Publication Date
- 2026-02-27
AI Technical Summary
Existing laser welding equipment cannot cool TOPCon cells in real time during welding, resulting in damage to the passivation layer and affecting module conversion efficiency and lifespan.
The system employs a vacuum adsorption conveyor and a galvanometer scanning welding head, combined with serpentine water channels and heat dissipation components within the cold strip, to achieve real-time heat dissipation during the welding process. It also features a quick-release locking mechanism and a scanning flushing mechanism for convenient maintenance and cleaning.
Effectively controlling the passivation layer temperature within a safe threshold avoids damage, ensures welding quality and production line uptime, and achieves efficient and stable heat dissipation and cleaning maintenance.
Smart Images
Figure CN121571808A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of laser welding equipment technology, and in particular to a TOPCon-0BB component segmented laser welding device. Background Technology
[0002] TOPCon-0BB (busbar-less) photovoltaic modules, with their significant advantages of high conversion efficiency and low long-term degradation rate, have become one of the core directions for technological upgrading in the photovoltaic industry, and their market penetration rate continues to increase rapidly. The ultimate realization of their performance advantages highly depends on the core manufacturing process—segmented laser welding of ultra-thin TOPCon cells and fine solder strips. This process requires high-frequency, high-precision solder joint formation, ensuring a reliable metallurgical bond between the solder strips and the fine grid lines of the cell, while minimizing damage to the sensitive structure of the TOPCon cell. Therefore, it places extremely stringent requirements on the precise temperature control and residual heat suppression capabilities of the welding equipment.
[0003] The core performance of TOPCon cells relies on a composite structure of an ultra-thin silica tunneling layer and a polycrystalline silicon passivation layer on the back. This structure is extremely sensitive to temperature, with a tolerance threshold of only ≤300℃; exceeding this threshold leads to performance degradation. During laser welding, the instantaneous temperature at the weld point can reach 800-1000℃. Due to the ultra-thinness and rapid heat conduction of TOPCon cells, a large amount of residual heat quickly diffuses into the cell's interior and surrounding areas, directly conducting to the passivation layer region, leading to crystallization, microcracks, or even peeling of the passivation layer. This damage directly causes a significant decrease in the cell's open-circuit voltage and fill factor, ultimately reducing the module's conversion efficiency and lifespan. Traditional welding equipment generally uses post-weld air cooling or overall water cooling solutions, which only cool the cells as a whole, failing to cool the cells during welding, thus failing to fundamentally solve this problem.
[0004] Therefore, it is necessary to provide a TOPCon-0BB component segmented laser welding device to solve the above-mentioned technical problems. Summary of the Invention
[0005] The technical problem solved by the present invention is to provide a TOPCon-0BB component segmented laser welding device that can dissipate heat in real time during welding, has a quick-release and easy-to-maintain cold strip, and can automatically clean the heat dissipation components.
[0006] To solve the above-mentioned technical problems, the present invention provides a segmented laser welding device for TOPCon-0BB components, including a vacuum adsorption conveyor table and a galvanometer scanning welding head. The galvanometer scanning welding head is positioned above the vacuum adsorption conveyor table, which includes an adsorption table and a vortex fan. Multiple insertion slots are formed on one outer wall of the adsorption table, and cold strip blocks are arranged in the insertion slots. A serpentine water channel is formed in the cold strip blocks. One end of an inlet corrugated water inlet pipe is fixedly installed at the inlet of the serpentine water channel, and one end of an outlet corrugated water outlet pipe is fixedly installed at the outlet of the serpentine water channel. A support plate is fixedly installed on the frame of the vacuum adsorption conveyor table, and a liquid storage tank, a water pump, and multiple heat dissipation components are installed on the top of the support plate. One end of an inlet pipe is fixedly installed at the inlet of the water pump, and the other end of the inlet pipe extends into the liquid storage tank. Each of the heat dissipation components includes multiple heat dissipation fins and a heat dissipation coil. The heat dissipation coil passes through and is fixedly installed on the multiple heat dissipation fins. The other end of the corrugated inlet pipe closest to the liquid storage tank is fixedly connected to the outlet of the water pump. The other ends of the remaining corrugated inlet pipes are fixedly connected to the outlets of the corresponding heat dissipation coils. The other end of the corrugated outlet pipe located on the far right extends into the liquid storage tank. The other ends of the remaining corrugated outlet pipes are fixedly connected to the inlets of the corresponding heat dissipation coils.
[0007] Furthermore, an air shroud located behind the plurality of heat dissipation components is fixedly installed on the top of the support plate, an air distribution plate is fixedly installed at the front opening of the air shroud, one end of an exhaust pipe is fixedly installed at the outlet of the vortex fan, and the other end of the exhaust pipe is fixedly connected to the rear air inlet of the air shroud.
[0008] Furthermore, a handle is fixedly installed on the cold strip.
[0009] Furthermore, the cold strip and the adsorption table are provided with a quick-release locking mechanism; The quick-release locking mechanism includes a first latch block, a fixed shaft, a second latch block, and a torsion spring. The first latch block is fixedly mounted on the adsorption platform, the fixed shaft is fixedly mounted on the cold strip block, the second latch block is rotatably sleeved on the fixed shaft, and the torsion spring is sleeved on the fixed shaft, with one end of the torsion spring fixedly connected to the second latch block and the other end fixedly connected to the cold strip block. A first buckle head is integrally formed on the first latch block, and a second buckle head is integrally formed on the second latch block. The outer walls of the first buckle head and the second buckle head are in contact with each other on their adjacent sides. A lever is fixedly mounted on the end of the second latch block away from the second buckle head.
[0010] Furthermore, inclined surfaces are provided on the outer walls of the sides of the first and second buckles that are far apart from each other.
[0011] Furthermore, a limiting end plate is fixedly installed on the end of the fixed shaft away from the cold strip block, and a limiting protrusion is integrally formed on the limiting end plate. A positioning block is fixedly installed on the outer wall of the second buckle away from the cold strip block, and the positioning block is in contact with the limiting protrusion.
[0012] Furthermore, the top of the lever at the end away from the second latch block is provided with several anti-slip grooves.
[0013] Furthermore, a scanning rinsing mechanism for cleaning the heat dissipation components is installed on the front side of the frame of the vacuum adsorption conveyor. The scanning rinsing mechanism includes a U-shaped frame, a long lead screw, a motor, an end water pipe, and multiple nozzles. The U-shaped frame is fixedly installed on the front side of the frame of the vacuum adsorption conveyor. The long lead screw is rotatably installed inside the U-shaped frame, with both ends extending outside the U-shaped frame. A sliding block is slidably installed inside the U-shaped frame. The end water pipe is fixedly installed on the sliding block. Multiple nozzles are fixedly installed on the outer wall of the end water pipe and are all inclined. The long lead screw passes through the sliding block and is threadedly connected to the sliding block. The motor is fixedly installed on the frame of the vacuum adsorption conveyor. The output end of the motor is fixedly connected to one end of the corresponding long lead screw. A water supply hose is fixedly installed at the bottom end of the end water pipe.
[0014] Preferably, a limiting slide is provided on one inner wall of the U-shaped frame, and the sliding block is slidably installed in the limiting slide.
[0015] Furthermore, a barrier is fixedly installed on the top of the support plate, and a discharge pipe is fixedly installed on the front outer wall of the barrier.
[0016] Compared with related technologies, the TOPCon-0BB component segmented laser welding device provided by the present invention has the following advantages: This invention utilizes cold strips inserted into the adsorption stage. The serpentine channels within these cold strips enable real-time cooling of the back of the battery cells during the welding process. As the coolant flows through these channels, it quickly removes residual heat from the solder joints, keeping the temperature of the passivation layer within a safe threshold. This prevents crystallization and cracking of the passivation layer, effectively reducing the decay of the battery's open-circuit voltage and filler factor. The coolant flowing from each cold strip flows through a separate heat dissipation assembly, preventing a gradual temperature increase caused by multiple cold strips connected in series. This ensures a consistent inlet temperature for each cold strip, resulting in uniform and stable heat dissipation for each battery cell and eliminating the risk of passivation layer damage due to insufficient localized cooling. Furthermore, the multiple cold strips on the adsorption stage form a continuous cooling zone, allowing the battery cells to continue contacting and dissipating heat with subsequent cold strips during the transfer process after welding. This effectively intercepts the secondary diffusion of residual heat from the solder joints, completely preventing the delayed damage to the passivation layer caused by accumulated residual heat. In addition, the heat dissipation component consists of heat dissipation coils and multiple heat dissipation fins, and works with a vortex fan and air shroud to achieve air cooling assistance, which has a higher cooling efficiency for the coolant and can ensure the long-term continuous and stable operation of the water cooling system.
[0017] This invention achieves rapid locking and unlocking of cold strip blocks through the interlocking structure of the first and second buckles. Operators only need to turn the lever to complete the installation and removal of cold strip blocks. When installing cold strip blocks, due to the inclined surface design, there is no need to press the lever. After the cold strip block is inserted into place, the second buckle can automatically lock in the predetermined position without the need for tools. The time required to replace a single set of cold strip blocks is short, which is conducive to significantly improving the production line utilization rate. This invention enables automatic cleaning of heat dissipation components through a scanning flushing mechanism. The motor drives the long lead screw to rotate, causing the sliding block and the end water pipe to move back and forth. The nozzle sprays high-pressure water to wash away the dust accumulated on the surface of the heat dissipation fins and heat dissipation coils. With the help of the enclosure and the wastewater collection and directional discharge of the discharge pipe, secondary pollution from the accumulated dust can be avoided, ensuring that the heat dissipation components maintain a high-efficiency heat dissipation state for a long time.
[0018] The water cooling system, heat dissipation system and cleaning mechanism of this invention are all integrated on the frame of the vacuum adsorption conveyor, which is compact and does not require additional workshop space. The flexible design of the inlet corrugated pipe and the outlet corrugated pipe can be adapted to the disassembly and assembly of the cold strip and the movement of the conveyor, avoiding pipe pulling damage and meeting the continuous operation requirements of the mass production line. Attached Figure Description
[0019] Figure 1 A schematic diagram of the TOPCon-0BB component segmented laser welding device provided by the present invention; Figure 2 for Figure 1 Another structural schematic diagram of the TOPCon-0BB component segmented laser welding device shown; Figure 3 for Figure 1 The enlarged view of part A shown; Figure 4 for Figure 1 The diagram shows the structure of the vacuum adsorption conveyor. Figure 5 for Figure 1 The diagram shows the structure of the adsorption stage. Figure 6 for Figure 1 A schematic diagram of a partial cross-sectional structure of the cold strip shown; Figure 7 for Figure 3 The diagram shows the structure of the quick-release locking mechanism. Figure 8 for Figure 7 A structural schematic diagram of the quick-release locking mechanism from another perspective; Figure 9 for Figure 1 The diagram shows the connection between multiple heat dissipation components and multiple cooling strips. Figure 10 for Figure 9 The diagram shows the structure of the heat dissipation component. Figure 11 for Figure 2 The diagram shows the structure of the air hood; Figure 12 for Figure 1 The diagram shows the structure of the scanning flushing mechanism. Figure 13 for Figure 12 The enlarged view of section B is shown.
[0020] Numbering on the map: 1. Cold strip block; 101. Serpentine water channel; 2. Inlet corrugated combination pipe; 3. Outlet corrugated combination pipe; 4. Support plate; 5. Heat dissipation fins; 6. Heat dissipation coil; 7. Liquid storage tank; 8. Water pump; 9. Inlet pipe; 10. Air cover; 11. Air distribution plate; 12. Exhaust pipe; 13. First fastener block; 131. First fastener head; 14. Fixed shaft; 15. Second fastener block; 151. Second fastener head; 16. Torsion spring; 17. Lever; 18. U-shaped frame; 19. Long lead screw; 20. Motor; 21. Sliding block; 22. Mounting plate; 23. Terminal water pipe; 24. Nozzle; 25. Water supply hose; 26. Enclosure; 27. Discharge pipe; 100. Vacuum adsorption conveyor table; 110. Adsorption table; 1101. Insertion slot; 200. Galvanometer scanning welding head; 300. Vortex fan. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Please refer to the following: Figures 1-13 A segmented laser welding device for TOPCon-0BB modules includes: a vacuum adsorption conveyor 100 and a galvanometer scanning welding head 200. The galvanometer scanning welding head 200 is positioned above the vacuum adsorption conveyor 100. The vacuum adsorption conveyor 100 is used to stably convey TOPCon solar cells. A vortex fan 300 provides negative pressure to the adsorption platform 110, ensuring that the ultra-thin solar cells are tightly adhered to the surface of the porous conveyor belt at the top of the adsorption platform 110, preventing them from warping due to thermal stress during welding. The galvanometer scanning welding head 200... The welding head 200 uses a pulsed fiber laser, enabling high-frequency segmented welding of multiple weld points per second, adapting to the welding requirements of fine solder strips in OBB components. The vacuum adsorption conveyor 100 includes an adsorption stage 110 and a vortex fan 300. Multiple insertion slots 1101 are formed on one outer wall of the adsorption stage 110. Each insertion slot 1101 is staggered with the corresponding longitudinal column of air holes on the adsorption stage 110. A cold strip block 1 is placed in the insertion slot 1101. The width of the insertion slot 1101 is equal to the thickness of the cold strip block 1. The tolerance is ±0.02mm to ensure that the cold strip 1 does not wobble after insertion. A serpentine water channel 101 is formed inside the cold strip 1. The design of the serpentine water channel 101 extends the residence time of the coolant in the cold strip 1, improving heat exchange efficiency. A handle is fixedly installed on the cold strip 1 for easy pushing and pulling. One end of the inlet corrugated water inlet pipe 2 is fixedly installed at the inlet of the serpentine water channel 101, and one end of the outlet corrugated water outlet pipe 3 is fixedly installed at the outlet. The inlet corrugated water inlet pipe 2 and the outlet corrugated water outlet pipe 3 are connected... The middle part of the corrugated composite pipe 3 is a corrugated pipe, and the upper and lower parts are stainless steel pipes, which have both flexibility and sealing properties, and can be adapted to the disassembly and assembly of the cold strip 1. A support plate 4 is fixedly installed on the frame of the vacuum adsorption conveyor table 100. A liquid storage tank 7, a water pump 8 and multiple heat dissipation components are installed on the top of the support plate 4. The coolant stored in the liquid storage tank 7 is deionized water containing 5% ethylene glycol, which has both antifreeze and antiboiling properties. One end of the water inlet pipe 9 is fixedly installed at the water inlet of the water pump 8, and the other end of the water inlet pipe 9 extends into the liquid storage tank 7. Each heat dissipation component includes multiple heat dissipation fins 5 and heat dissipation coils 6. The heat dissipation fins 5 are made of aluminum alloy. The heat dissipation coils 6 are made of copper tubing and are tightly fitted to the heat dissipation fins 5. The other end of the inlet corrugated combination pipe 2 near the liquid storage tank 7 is fixedly connected to the outlet of the water pump 8. The other ends of the remaining inlet corrugated combination pipes 2 are fixedly connected to the outlets of the corresponding heat dissipation coils 6. The other end of the rightmost outlet corrugated combination pipe 3 extends into the liquid storage tank 7. The other ends of the remaining outlet corrugated combination pipes 3... One end is fixedly connected to the inlet of the corresponding heat dissipation coil 6. This connection method can realize the series circulation of coolant, ensuring that the inlet water temperature of each group of cold strips 1 is consistent. The water pump 8 draws low-temperature coolant from the storage tank 7 and delivers it to the serpentine water channel 101 of each cold strip 1 through the inlet pipe 9 and the inlet corrugated combination pipe 2. After absorbing the residual heat of the battery cell welding in the water channel, the coolant is guided to the corresponding independent heat dissipation component through the outlet corrugated combination pipe 3. It exchanges heat with the heat dissipation fins 5 through the heat dissipation coil 6. The cooled coolant flows back to the storage tank 7 to form a closed-loop heat dissipation circuit.
[0023] A shroud 10 is fixedly installed on the top of the support plate 4, located behind multiple heat dissipation components. A wind distribution plate 11 is fixedly installed at the front opening of the shroud 10. The wind distribution plate 11 has micro-holes arranged in an array, which allows the airflow blown by the vortex fan 300 to act evenly on the surface of the heat dissipation fins 5, improving air cooling efficiency. One end of the exhaust pipe 12 is fixedly installed at the outlet of the vortex fan 300, and the other end of the exhaust pipe 12 is fixedly connected to the rear air inlet of the shroud 10. The airflow generated by the vortex fan 300 is introduced into the shroud 10 through the exhaust pipe 12, and after being evenly dispersed by the micro-hole array of the wind distribution plate 11, it is blown vertically onto the surface of the heat dissipation fins 5 and heat dissipation coils 6 of the heat dissipation components, accelerating air convection and quickly carrying away the heat transferred by the coolant to the fins and coils. The closed design of the shroud 10 can prevent airflow diffusion and ensure that the air cooling energy is concentrated on the heat dissipation area. Together with the water cooling system, it forms a composite heat dissipation structure of water cooling and air cooling, improving the cooling speed of the coolant.
[0024] The cold strip block 1 and the adsorption table 110 are equipped with quick-release locking mechanisms. Specifically, the quick-release locking mechanism includes a first buckle block 13, a fixed shaft 14, a second buckle block 15, and a torsion spring 16. The first buckle block 13 is fixedly installed on the adsorption table 110, the fixed shaft 14 is fixedly installed on the cold strip block 1, the second buckle block 15 is rotatably sleeved on the fixed shaft 14, and the torsion spring 16 is sleeved on the fixed shaft 14. One end of the torsion spring 16 is fixedly connected to the second buckle block 15, and the other end is fixedly connected to the cold strip block 1. The second buckle block 15 can be locked by the torsion spring 16. The first buckle 131 is stably engaged with the first buckle 131. The first buckle 131 is integrally formed on the first buckle block 13, and the second buckle 151 is integrally formed on the second buckle block 15. The outer walls of the first buckle 131 and the second buckle 151 are in contact with each other. A lever 17 is fixedly installed at the end of the second buckle block 15 away from the second buckle 151. When the operator moves the lever 17 downward, the second buckle block 15 can be rotated around the fixed shaft 14, so that the first buckle 131 and the second buckle 151 are separated, and the cold strip block 1 is unlocked.
[0025] Both the first buckle 131 and the second buckle 151 have inclined surfaces on their outer walls on opposite sides. When the cold strip block 1 is pushed into the insertion slot 1101, the inclined surface on the second buckle 151 contacts the inclined surface on the first buckle 131, causing the second buckle 151 to automatically rotate upwards. When the cold strip block 1 is inserted into place, the second buckle 151 will automatically reset under the action of the torsion spring 16 and lock behind the first buckle 131. This design facilitates the automatic locking and positioning of the buckles. A limiting end plate is fixedly installed on the end of the fixed shaft 14 away from the cold strip block 1. A limiting protrusion is integrally formed on the limiting end plate. A positioning block is fixedly installed on the outer wall of the second buckle 15 away from the cold strip block 1. The positioning block contacts the limiting protrusion, and the second buckle 15 remains horizontal in the initial state under the obstruction of the limiting protrusion. Several anti-slip grooves are provided on the top of the end of the lever 17 away from the second buckle 15 to increase the friction between the fingers and the lever 17 and facilitate operation.
[0026] A scanning rinsing mechanism for cleaning heat dissipation components is installed on the front side of the frame of the vacuum adsorption conveyor 100. Specifically, the scanning rinsing mechanism includes a U-shaped frame 18, a long lead screw 19, a motor 20, an end water pipe 23, and multiple nozzles 24. The U-shaped frame 18 is fixedly installed on the front side of the frame of the vacuum adsorption conveyor 100. The long lead screw 19 is rotatably installed inside the U-shaped frame 18, with both ends extending outside the U-shaped frame 18. A sliding block 21 is slidably installed inside the U-shaped frame 18. Specifically, a limiting slide is provided on one inner wall of the U-shaped frame 18, and the sliding block 21 is slidably installed in the limiting slide. An mounting plate 22 is fixedly installed on the sliding block 21. The end water pipe 23 is fixedly installed on the mounting plate 22. Multiple nozzles 24 are all fixedly installed on the outer wall of the end water pipe 23 and are all inclined. The inclination angle of the nozzles 24 is 5-10°, which allows the high-pressure water flow to impact the heat dissipation components from front to back. The surface of the fins 5 is effectively cleaned of dust accumulation between the fin gaps. The long screw 19 passes through the sliding block 21 and is threadedly connected to the sliding block 21. The motor 20 is fixedly installed on the frame of the vacuum adsorption conveyor table 100. The output end of the motor 20 is fixedly connected to one end of the corresponding long screw 19. The bottom end of the end water pipe 23 is fixedly installed with a water supply hose 25. The end of the water supply hose 25 away from the end water pipe 23 is connected to the outlet of the high-pressure water pump to provide high-pressure water flow for the rinsing mechanism. The high-pressure water pump delivers high-pressure water flow to the end water pipe 23 through the water supply hose 25. The water is then sprayed directionally onto the surface of the heat dissipation fins 5 through the inclined nozzle 24. At the same time, the motor 20 drives the long screw 19 to rotate, causing the sliding block 21 to reciprocate linearly along the limiting slide of the U-shaped frame 18. The mounting plate 22 drives the end water pipe 23 and the nozzle 24 to scan synchronously, realizing a comprehensive cleaning of the heat dissipation components and avoiding dust accumulation that affects heat dissipation efficiency.
[0027] A baffle 26 is fixedly installed on the top of the support plate 4. A discharge pipe 27 is fixedly installed on the front outer wall of the baffle 26. The baffle 26 can limit the excessive outflow of wastewater after rinsing and discharge the wastewater at a fixed point through the discharge pipe 27.
[0028] Working principle: During the welding and heat dissipation stage, the vortex fan 300 and water pump 8 are started first. The vortex fan 300 provides negative pressure to the adsorption table 110, and the water pump 8 draws out the coolant from the storage tank 7 and sends it through the inlet pipe 9 and the inlet corrugated combination pipe 2 into the serpentine water channel 101 of the leftmost cold strip 1. The TOPCon solar cells are conveyed by the feeding mechanism to the porous conveyor belt of the vacuum adsorption conveyor table 100. Under the action of negative pressure, they are tightly attached and the movement is paused when they are directly below the galvanometer scanning welding head 200. The galvanometer scanning welding head 200 is started to perform segmented laser welding on the solar cells and the thin welding strip. The residual heat generated by the welding point is conducted to the cold strip 1 through the solar cells and the porous conveyor belt. The coolant is quickly carried away by the coolant in the serpentine water channel 101; the coolant after absorbing heat flows into the heat dissipation coil 6 through the outlet corrugated combination pipe 3. The airflow blown out by the vortex fan 300 acts evenly on the heat dissipation fins 5 through the air cover 10 and the air distribution plate 11, and cools the coolant in the heat dissipation coil 6 by air cooling, so as to control the temperature of the passivation layer area on the back of the battery cell at a low range and avoid damage to the passivation layer. The cooled coolant enters the next cold strip 1 under the action of water pressure, and finally flows back to the storage tank 7 through the outlet corrugated combination pipe 3 on the last cold strip 1. In this way, a continuous and stable cooling zone is formed, which can continue to cool the battery cells that have been welded. When the cold strip 1 needs to be replaced or maintained, first remove the top of the inlet corrugated pipe 2 and the outlet corrugated pipe 3. Then, the operator can hold the handle and push the lever 17 downward with their thumb, causing the second buckle 15 to rotate around the fixed shaft 14. The torsion spring 16 is compressed, and the first buckle 131 separates from the second buckle 151. Then, pull it outward to remove the cold strip 1 from the insertion slot 1101. During installation, align the cold strip 1 with the insertion slot 1101 and insert it. The inclined surfaces of the first buckle 131 and the second buckle 151 contact each other. The second buckle 151 first tilts upward. During this process, the torsion spring 16 will be compressed. After the cold strip 1 is installed in place, it will automatically lock under the elastic force of the torsion spring 16, completing the quick positioning and locking of the cold strip 1. The whole process does not require tools and takes little time. When the surface of the heat dissipation components is covered with dust, the scanning flushing mechanism is activated. The water supply hose 25 is connected to a high-pressure water source, and the high-pressure water flows through the end water pipe 23 and is sprayed out from the nozzle 24. At the same time, the motor 20 is started, driving the long lead screw 19 to rotate, which causes the sliding block 21 and the end water pipe 23 to move back and forth along the limiting slide of the U-shaped frame 18. The high-pressure water flow sprayed from the nozzle 24 thoroughly flushes the heat dissipation fins 5 and the heat dissipation coil 6. The wastewater and dust generated during the flushing are collected by the enclosure 26 and discharged through the discharge pipe 27. The cleaning process can be completed automatically during production line breaks without stopping the machine, ensuring that the heat dissipation components maintain a high-efficiency heat dissipation state for a long time.
[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A segmented laser welding device for TOPCon-0BB components, comprising a vacuum adsorption conveyor stage and a galvanometer scanning welding head, wherein the galvanometer scanning welding head is disposed above the vacuum adsorption conveyor stage, and the vacuum adsorption conveyor stage comprises an adsorption stage and a vortex fan, characterized in that, Multiple insertion slots are provided on one outer wall of the adsorption platform. Cold strip blocks are arranged in the insertion slots. A serpentine water channel is formed in the cold strip blocks. One end of the inlet corrugated water inlet pipe is fixedly installed at the inlet of the serpentine water channel, and one end of the outlet corrugated water outlet pipe is fixedly installed at the outlet of the serpentine water channel. A support plate is fixedly installed on the frame of the vacuum adsorption conveyor. A liquid storage tank, a water pump and multiple heat dissipation components are installed on the top of the support plate. One end of the inlet pipe is fixedly installed at the inlet of the water pump, and the other end of the inlet pipe extends into the liquid storage tank. Each of the heat dissipation components includes multiple heat dissipation fins and a heat dissipation coil. The heat dissipation coil passes through and is fixedly installed on the multiple heat dissipation fins. The other end of the corrugated inlet pipe closest to the liquid storage tank is fixedly connected to the outlet of the water pump. The other ends of the remaining corrugated inlet pipes are fixedly connected to the outlets of the corresponding heat dissipation coils. The other end of the corrugated outlet pipe located on the far right extends into the liquid storage tank. The other ends of the remaining corrugated outlet pipes are fixedly connected to the inlets of the corresponding heat dissipation coils.
2. The TOPCon-0BB component segmented laser welding device according to claim 1, characterized in that, An air shroud located behind the plurality of heat dissipation components is fixedly installed on the top of the support plate. An air distribution plate is fixedly installed at the front opening of the air shroud. One end of an exhaust pipe is fixedly installed at the outlet of the vortex fan, and the other end of the exhaust pipe is fixedly connected to the rear air inlet of the air shroud.
3. The TOPCon-0BB component segmented laser welding device according to claim 1, characterized in that, A handle is fixedly installed on the cold strip block.
4. The TOPCon-0BB component segmented laser welding device according to claim 3, characterized in that, The cold strip and the adsorption table are equipped with quick-release locking mechanisms; The quick-release locking mechanism includes a first latch block, a fixed shaft, a second latch block, and a torsion spring. The first latch block is fixedly mounted on the adsorption platform, the fixed shaft is fixedly mounted on the cold strip block, the second latch block is rotatably sleeved on the fixed shaft, and the torsion spring is sleeved on the fixed shaft, with one end of the torsion spring fixedly connected to the second latch block and the other end fixedly connected to the cold strip block. A first buckle head is integrally formed on the first latch block, and a second buckle head is integrally formed on the second latch block. The outer walls of the first buckle head and the second buckle head are in contact with each other on their adjacent sides. A lever is fixedly mounted on the end of the second latch block away from the second buckle head.
5. The TOPCon-0BB component segmented laser welding device according to claim 4, characterized in that, Inclined surfaces are provided on the outer walls of the sides of the first and second buckles that are far apart from each other.
6. The TOPCon-0BB component segmented laser welding device according to claim 4, characterized in that, A limiting end plate is fixedly installed at the end of the fixed shaft away from the cold strip block. A limiting protrusion is integrally formed on the limiting end plate. A positioning block is fixedly installed on the outer wall of the second buckle away from the cold strip block. The positioning block is in contact with the limiting protrusion.
7. The TOPCon-0BB component segmented laser welding device according to claim 4, characterized in that, The top of the lever, away from the second latch block, has several anti-slip grooves.
8. The TOPCon-0BB component segmented laser welding device according to claim 1, characterized in that, The front side of the frame of the vacuum adsorption conveyor is equipped with a scanning rinsing mechanism for cleaning the heat dissipation components. The scanning rinsing mechanism includes a U-shaped frame, a long lead screw, a motor, an end water pipe, and multiple nozzles. The U-shaped frame is fixedly installed on the front side of the frame of the vacuum adsorption conveyor. The long lead screw is rotatably installed inside the U-shaped frame, with both ends extending outside the U-shaped frame. A sliding block is slidably installed inside the U-shaped frame. The end water pipe is fixedly installed on the sliding block. Multiple nozzles are fixedly installed on the outer wall of the end water pipe and are all inclined. The long lead screw passes through the sliding block and is threadedly connected to the sliding block. The motor is fixedly installed on the frame of the vacuum adsorption conveyor. The output end of the motor is fixedly connected to one end of the corresponding long lead screw. A water supply hose is fixedly installed at the bottom end of the end water pipe.
9. The TOPCon-0BB component segmented laser welding device according to claim 8, characterized in that, A limiting slide is provided on one inner wall of the U-shaped frame, and the sliding block is slidably installed in the limiting slide.
10. The TOPCon-0BB component segmented laser welding device according to claim 8, characterized in that, A barrier is fixedly installed on the top of the support plate, and a discharge pipe is fixedly installed on the front outer wall of the barrier.