Low-temperature welding strip rapid cooling device for HJT battery

Abstract

The utility model relates to the technical field of solder strip cooling, in particular to a low-temperature solder strip rapid cooling device for an HJT battery, which comprises a pool body, a transverse plate, a water distribution pipe, a water conveying pipe, a water pump, a cooler, a fan, a pinch roller, a first guide wheel, a second guide wheel, an annular air knife, an air conveying pipe, an air pump, an air cooling assembly, an air conveying pipe, an air compressor and a third guide wheel. When the welding strip cooling device is used, when a welding strip passes through the positions below the pinch rollers on the left side and the right side in the cooling pond in a winding mode, cooling liquid in the cooling pond is conveyed into the water distribution pipe through the water pump and then sprayed out through the multiple spray heads below the water distribution pipe, water cooling is conducted on the welding strip, and heat is rapidly absorbed through the cooling liquid; and meanwhile, through rotation of the multiple fans arranged on the two side walls of the cooling pond, water cooling and air cooling are combined, rapid heat absorption cooling of the high-temperature section of the welding strip is achieved, meanwhile, primary heat dissipation of cooling water is achieved, and good practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of welding strip cooling technology, specifically to a low-temperature welding strip rapid cooling device for HJT batteries. Background Technology

[0002] Heterojunction (HJT) cells, also known as composite junction cells, are a special type of PN junction formed by depositing a thin film of amorphous silicon onto crystalline silicon. Compared to traditional homojunction cells, HJT cells offer several advantages: High conversion efficiency: HJT cells can achieve conversion efficiencies exceeding 26%, significantly higher than traditional monocrystalline and polycrystalline silicon cells. Low temperature coefficient: The temperature coefficient of HJT cells is only -0.25% / ℃, while that of traditional monocrystalline silicon cells is -0.45% / ℃, meaning that HJT cells experience less power loss at high temperatures. Bifacial power generation: HJT cells can generate power simultaneously from both the front and back sides, increasing power output by 20-30% compared to traditional cells. Simple manufacturing process: The fabrication process for HJT cells is relatively simple, resulting in lower production costs. Despite these advantages, HJT cells still face some challenges in practical applications, one of which is the interconnection between the cells and the solder ribbon. During the encapsulation process of photovoltaic modules, the cells need to be interconnected with the solder ribbon to collect and transmit current. The process involves generating a certain temperature, and a cooling device is needed to quickly cool the solder ribbon during its transmission to facilitate subsequent processing.

[0003] Currently, existing methods for cooling welding strips typically involve long-distance transmission and cooling devices. Such methods require a large space and have low cooling efficiency. During the production process, the welding strips are often not cooled completely, which can easily damage their surface after passing through the guide rollers.

[0004] Based on this, this utility model designs a low-temperature welding ribbon rapid cooling device for HJT batteries to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rapid cooling device for low-temperature solder ribbons in HJT batteries.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rapid cooling device for low-temperature welding strips in HJT batteries, comprising a pool body, a horizontal plate, a water distribution pipe, a water supply pipe, a water pump, a cooler, a fan, a pressure roller, a first guide roller, a second guide roller, an annular air knife, an air supply pipe, an air pump, an air cooling assembly, an air supply pipe, an air compressor, and a third guide roller. The pool body has a cooling pool with an outlet hole inside. A horizontal plate is fixedly connected to the upper end of the cooling pool. Through slots are provided at both ends of the horizontal plate. A water distribution pipe is fixedly installed at the upper end of the horizontal plate. Multiple nozzles are provided at the lower end of the water distribution pipe. A water supply pipe is fixedly connected to the center of the water distribution pipe. The water supply pipe is fixedly connected to the outlet of the water pump. The inlet of the water pump is connected to the outlet of the cooler via a connecting pipe. The inlet of the cooler is connected to the outlet hole. Multiple fans are provided on the pool walls at both the front and rear ends of the cooling pool.

[0007] As a preferred technical solution of this utility model, pressure rollers are provided below the through grooves on both sides of the horizontal plate. The pressure rollers are fixedly connected to the side wall inside the cooling pool, and the two pressure rollers are on the same horizontal line.

[0008] As a preferred embodiment of this utility model, a first guide wheel is fixedly connected to the left side of the upper end of the cooling pool, and a second guide wheel is fixedly connected to the right side of the upper end of the cooling pool. The first guide wheel and the second guide wheel are arranged on the same horizontal line.

[0009] As a preferred embodiment of this utility model, an annular air knife is provided on the right side of the second guide wheel. The annular air knife is fixedly connected to the upper end of the pool body. The air inlet of the annular air knife is fixedly connected to the air outlet of the air pump through an air supply pipe. The air pump is fixedly installed on the back of the pool body.

[0010] As a preferred embodiment of this utility model, an air-cooling component is provided on the right side of the annular air knife, and the air-cooling component is fixedly installed on the upper end of the pool body.

[0011] As a preferred technical solution of this utility model, the air-cooling component includes a vortex tube, an air outlet, a jet pipe and a compressed air inlet. The vortex tube is fixedly installed at the upper end of the pool body. Two air outlets are provided at the left end of the vortex tube. A jet pipe is fixedly connected to each of the two air outlets. A compressed air inlet is provided on one side of the vortex tube.

[0012] As a preferred technical solution of this utility model, a compressed air inlet on one side of the air-cooling component is fixedly connected to an air supply pipe, and the other end of the air supply pipe is fixedly connected to the air outlet of the air compressor.

[0013] As a preferred embodiment of this utility model, a third guide wheel is provided on the rightmost side of the upper end of the pool body, and the third guide wheel and the second guide wheel are arranged on the same horizontal line.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When this utility model is in use, as the welding strip passes under the pressure rollers on both sides of the cooling pool, the coolant in the cooling pool is transported to the water distribution pipe by a water pump. Then, it is sprayed out through multiple nozzles below the water distribution pipe to cool the welding strip with water. The coolant absorbs heat quickly, and at the same time, the rotation of multiple fans set on both sides of the cooling pool realizes the combination of water cooling and air cooling, realizing the rapid heat absorption and cooling of the high-temperature section of the welding strip, and at the same time realizing the initial heat dissipation of the cooling water, which has good practicality.

[0016] 2. In use, the annular air knife can dry the water-cooled welding strip and remove any coolant that may be on the back of the welding strip. Then, the welding strip passes between the nozzles at the front end of the two air jet pipes on the air-cooling assembly. The cold air sprayed from the nozzles of the air jet pipes cools the welding strip again, achieving cold air temperature control in the low-temperature section of the welding strip, ensuring complete cooling of the welding strip and improving the cooling efficiency of the welding strip. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model;

[0020] Figure 3 This is a top view of the overall structure of this utility model;

[0021] Figure 4 This is a partially enlarged structural schematic diagram of the present invention;

[0022] Figure 5 This is a cross-sectional view of the cooling pool of this utility model;

[0023] Figure 6 This is an enlarged structural schematic diagram of the air-cooling component of this utility model.

[0024] In the diagram: 1. Pool body; 101. Cooling pool; 102. Water outlet; 2. Horizontal plate; 201. Through groove; 3. Water distribution pipe; 301. Nozzle; 4. Water supply pipe; 5. Water pump; 6. Cooler; 7. Fan; 8. Pressure roller; 9. First guide roller; 10. Second guide roller; 11. Annular air knife; 12. Air supply pipe; 13. Air pump; 14. Air cooling assembly; 1401. Vortex tube; 1402. Air outlet; 1403. Jet pipe; 1404. Compressed air inlet; 15. Air supply pipe; 16. Air compressor; 17. Third guide roller. Detailed Implementation

[0025] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Example

[0027] Please see Figure 1-6 This utility model provides the following technical solution: a rapid cooling device for low-temperature welding strips in HJT batteries, comprising a tank body 1, a horizontal plate 2, a water distribution pipe 3, a water supply pipe 4, a water pump 5, a cooler 6, a fan 7, a pressure roller 8, a first guide roller 9, a second guide roller 10, an annular air knife 11, an air supply pipe 12, an air pump 13, an air cooling assembly 14, an air supply pipe 15, an air compressor 16, and a third guide roller 17. A cooling tank 101 is provided on the tank body 1, and a water outlet 102 is provided inside the cooling tank 101 for cooling... A horizontal plate 2 is fixedly connected to the upper end of the pool 101. A through groove 201 is opened at both the left and right ends of the horizontal plate 2. A water distribution pipe 3 is fixedly installed at the upper end of the horizontal plate 2. Multiple nozzles 301 are set at the lower end of the water distribution pipe 3. A water supply pipe 4 is fixedly connected to the center of the water distribution pipe 3. The water supply pipe 4 is fixedly connected to the outlet of the water pump 5. The inlet of the water pump 5 is connected to the outlet of the cooler 6 through a connecting pipe. The inlet of the cooler 6 is connected to the outlet hole 102. Multiple fans 7 are set on the pool walls at both the front and rear ends of the cooling pool 101.

[0028] A pressure roller 8 is provided below the through groove 201 on both the left and right sides of the horizontal plate 2. The pressure roller 8 is fixedly connected to the side wall inside the cooling pool 101, and the two pressure rollers 8 are on the same horizontal line.

[0029] The pressure rollers 8 installed on the inner two side walls of the cooling pool 101 can guide and limit the welding strip in the cooling pool 101, ensuring that the welding strip can pass directly under the water distribution pipe 3. The coolant sprayed from the water distribution pipe 3 and the multiple fans 7 installed at the front and rear of the cooling pool 101 combine water cooling and air cooling to quickly cool the welding strip and improve cooling efficiency.

[0030] A first guide wheel 9 is fixedly connected to the left side of the upper end of the cooling pool 101, and a second guide wheel 10 is fixedly connected to the right side of the upper end of the cooling pool 101. The first guide wheel 9 and the second guide wheel 10 are set on the same horizontal line.

[0031] An annular air knife 11 is provided on the right side of the second guide wheel 10. The annular air knife 11 is fixedly connected to the upper end of the pool body 1. The air inlet of the annular air knife 11 is fixedly connected to the air outlet of the air pump 13 through the air supply pipe 12. The air pump 13 is fixedly installed on the back of the pool body 1.

[0032] An air-cooling component 14 is provided on the right side of the annular air knife 11, and the air-cooling component 14 is fixedly installed on the upper end of the pool body 1.

[0033] The air-cooled assembly 14 includes a vortex tube 1401, an air outlet 1402, a jet pipe 1403, and a compressed air inlet 1404. The vortex tube 1401 is fixedly installed at the upper end of the pool body 1. Two air outlets 1402 are provided at the left end of the vortex tube 1401. A jet pipe 1403 is fixedly connected to each of the two air outlets 1402. A compressed air inlet 1404 is provided on one side of the vortex tube 1401.

[0034] A compressed air inlet 1404 on one side of the air-cooled assembly 14 is fixedly connected to an air supply pipe 15, and the other end of the air supply pipe 15 is fixedly connected to the air outlet of the air compressor 16.

[0035] A third guide wheel 17 is provided on the far right of the upper end of the pool body 1. The third guide wheel 17 and the second guide wheel 10 are set on the same horizontal line.

[0036] With the structure of the air cooling component 14 described above, when the welding strip passes between the nozzles at the front end of the two air jet pipes 1403, the welding strip can be air-cooled, and the temperature of the welding strip can be controlled by the cold air. By cooperating with the annular air knife 11, it is ensured that the low temperature section of the welding strip can be cooled quickly and completely.

[0037] The working principle and usage process of this utility model are as follows: In specific use, the welding strip passes over the top of the first guide wheel 9 at the leftmost end of the cooling pool 1, then exits from below the pressure wheel 8 on the left side of the cooling pool 101, then exits from below the pressure wheel 8 on the right side of the cooling pool 101, then passes over the top of the second guide wheel 10, passes through the center of the annular air knife 11, and then passes around to the third guide wheel 17. While the welding strip passes through the cooling pool 101, the coolant in the cooling pool 101 is drawn into the cooler 6 by the water pump 5. The cooler 6 cools the coolant, and then the water pump 5 transports the cooled coolant through the water pipe 4 to the water distribution pipe 3, where it is sprayed out through multiple nozzles 301 below the water distribution pipe 3. Coolant is sprayed onto the welding strip, and at the same time, multiple fans 7 on both sides of the cooling pool 101 are activated to blow air onto the welding strip to quickly remove heat, achieving a combination of water cooling and air cooling to rapidly cool the high-temperature section of the welding strip. Then, when the welding strip passes through the annular air knife 11, the annular air knife 11 can remove the coolant on the surface of the welding strip and cool it down again. When the welding strip passes between the nozzles at the front end of the two jet pipes 1403 on the air cooling component 14, the cold air sprayed out by the nozzles of the jet pipes 1403 achieves air cooling of the welding strip. Through the combined use of the annular air knife 11 and the air cooling component 14, the cold air temperature control of the low-temperature section of the welding strip is achieved, ensuring complete cooling of the welding strip and improving the cooling efficiency of the welding strip.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A low temperature solder ribbon rapid cooling device for HJT cells, characterized by: The system includes a pool body (1), a horizontal plate (2), a water distribution pipe (3), a water supply pipe (4), a water pump (5), a cooler (6), a fan (7), a pressure roller (8), a first guide wheel (9), a second guide wheel (10), an annular air knife (11), an air supply pipe (12), an air pump (13), an air-cooling assembly (14), an air supply pipe (15), an air compressor (16), and a third guide wheel (17). A cooling pool (101) is provided on the pool body (1), and a water outlet (102) is provided inside the cooling pool (101). A horizontal plate (2) is fixedly connected to the upper end of the cooling pool (101). The horizontal plate (2) has through slots (201) on both the left and right ends. A water distribution pipe (3) is fixedly installed on the upper end of the horizontal plate (2). Multiple nozzles (301) are provided at the lower end of the water distribution pipe (3). A water supply pipe (4) is fixedly connected to the center of the water distribution pipe (3). The water supply pipe (4) is fixedly connected to the outlet of the water pump (5). The inlet of the water pump (5) is connected to the outlet of the cooler (6) through a connecting pipe. The inlet of the cooler (6) is connected to the outlet hole (102). Multiple fans (7) are provided on the pool walls at both the front and rear ends of the cooling pool (101).

2. The low-temperature solder strip rapid cooling device for HJT cells according to claim 1, characterized in that: A pressure roller (8) is provided below the through groove (201) on both sides of the horizontal plate (2). The pressure roller (8) is fixedly connected to the side wall inside the cooling pool (101), and the two pressure rollers (8) are on the same horizontal line.

3. The low-temperature solder strip rapid cooling device for HJT cells according to claim 1, characterized in that: A first guide wheel (9) is fixedly connected to the left side of the upper end of the cooling pool (101), and a second guide wheel (10) is fixedly connected to the right side of the upper end of the cooling pool (101). The first guide wheel (9) and the second guide wheel (10) are set on the same horizontal line.

4. The low-temperature solder strip rapid cooling device for HJT cells according to claim 1, characterized in that: An annular air knife (11) is provided on the right side of the second guide wheel (10). The annular air knife (11) is fixedly connected to the upper end of the pool body (1). The air inlet of the annular air knife (11) is fixedly connected to the air outlet of the air pump (13) through the air supply pipe (12). The air pump (13) is fixedly installed on the back of the pool body (1).

5. The low-temperature solder strip rapid cooling device for HJT cells according to claim 1, characterized in that: An air-cooling component (14) is provided on the right side of the annular air knife (11), and the air-cooling component (14) is fixedly installed on the upper end of the pool body (1).

6. The low-temperature solder strip rapid cooling device for HJT cells according to claim 5, characterized in that: The air-cooling assembly (14) includes a vortex tube (1401), an air outlet (1402), a jet pipe (1403), and a compressed air inlet (1404). The vortex tube (1401) is fixedly installed at the upper end of the pool body (1). Two air outlets (1402) are provided at the left end of the vortex tube (1401). A jet pipe (1403) is fixedly connected to each of the two air outlets (1402). A compressed air inlet (1404) is provided on one side of the vortex tube (1401).

7. The low-temperature solder strip rapid cooling device for HJT cells according to claim 6, characterized in that: The compressed air inlet (1404) on one side of the air-cooled assembly (14) is fixedly connected to an air supply pipe (15), and the other end of the air supply pipe (15) is fixedly connected to the air outlet of the air compressor (16).

8. The low-temperature solder strip rapid cooling device for HJT cells according to claim 1, characterized in that: The third guide wheel (17) is arranged at the rightmost side of the upper end of the pool body (1) and is arranged on the same horizontal line as the second guide wheel (10).

Images