Cooling device for solar cell screen printing

Abstract

The utility model discloses a cooling device for solar cell screen printing, which comprises a cooling mechanism for cooling cells A. The cooling mechanism comprises a cooling box, a box door hinged with the cooling box and a cell placing plate arranged in the cooling box. The cold air conveying and cooling mechanism comprises a storage box and a sealing plate which are mounted on the outer surface of the cooling box, and a cooling fan and an air conveying assembly which are mounted on the storage box; when a battery piece A is cooled, a cooling fan is started, cold air enters a storage box, then the cold air flows through a first air conveying pipe and enters a flow dividing pipe, then the cold air is divided and flows through a second air conveying pipe and then enters a cooling pipe, the cold air in the cooling pipe is sprayed out from a nozzle, and the cold air is sprayed to the two faces of the battery piece A; under the combined action of the rotating cylinder and the sliding table adjusting cylinder, the position of the battery piece A can be changed, different positions of the surface of the battery piece A can be cooled, heat dissipation of the surface of the battery piece A can be accelerated, and the purpose of cooling is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar cell cooling, and in particular relates to a cooling device for solar cell screen printing. Background Art

[0002] Solar cell screen printing process is an important processing step in the production process of solar cells. After the processes of texturing, diffusion and PECVD, the solar cell has been made into a PN junction, which can generate current under light. In order to conduct the current, electrodes need to be prepared on the surface of the cell. Screen printing technology is a process for processing battery electrodes, that is, printing the paste onto the solar cell substrate through a screen template; in solar cell screen printing, high temperature may cause increased thermal stress on the cell, and high temperature is not conducive to the curing of ink or paste, so it is necessary to cool down the paste (usually metal paste, such as silver paste or aluminum paste) printed on the silicon wafer to quickly cool to room temperature or near room temperature after sintering, so as to ensure the stability and adhesion of the printed pattern and avoid damage to the cell due to high temperature; one of the commonly used cooling methods is forced air cooling, that is, using fans or air conditioners to blow cold air to the cell to accelerate its heat dissipation process;

[0003] The forced air cooling method cools down the screen-printed solar cell. First, after the printing and sintering processes are completed, the cell is immediately removed from the high-temperature area to reduce the continued influence of the heat source. Second, the electrode sheet is moved to the fan cooling area. Then, a fan cooling device is used to generate cold air to force cool the side of the cell facing the cold air. In the above operation, the cold air can only dissipate heat and cool down one side of the cell. During the cooling process, the cell cannot rotate, so that it can dissipate heat and cool down on both sides to achieve a sufficient cooling effect.

[0004] When cooling solar cells using the existing fan-forced air cooling method, there is a problem in that there is no design for heat dissipation and cooling on both sides of the solar cells. Therefore, the present application proposes a cooling device for solar cell screen printing. Utility Model Content

[0005] The purpose of the utility model is to provide a cooling device for solar cell screen printing, so as to solve the problem of the cooling device proposed in the above background art that has no design for heat dissipation and cooling on both sides of the solar cell.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: a solar cell screen printing cooling device, comprising:

[0007] A cooling mechanism for cooling the battery cell A, comprising a cooling box, a door hinged to the cooling box, and a battery cell placement plate installed inside the cooling box;

[0008] The cold air delivery and cooling mechanism includes a storage box and a sealing plate mounted on the outer surface of the cooling box, a cooling fan mounted on the storage box, and an air delivery assembly. The air delivery assembly includes a first air delivery pipe connected to the interior of the storage box at one end, a shunt pipe connected to the other end of the first air delivery pipe, a second air delivery pipe connected to the shunt pipe at one end and inserted into the cooling box at the other end, and a cooling pipe connected to the other end of the second air delivery pipe. The cooling pipe is provided with nozzles distributed equidistantly.

[0009] The rotating mechanism includes a rotating cylinder installed on the cooling box, a limiting half frame connected to the output shaft of the rotating cylinder, a movable plate that matches the inner wall of the limiting half frame, a limiting plate perpendicular to the movable plate, and an adjusting component installed in the limiting half frame. The movable plate is provided with an electromagnet. The adjusting component includes an adjusting slide cylinder installed in the limiting half frame, and a connecting rod with two ends respectively connected to the slide and the movable plate on the adjusting slide cylinder.

[0010] Preferably, the cold air path delivered by the cooling fan is the storage box, direction a in the first air supply pipe, the diversion pipe, direction b in the second air supply pipe, the cooling pipe to the nozzle.

[0011] Preferably, the rotating cylinder drives the limiting half frame and the movable plate to rotate forward and reverse 180 degrees along the c direction.

[0012] Preferably, an exhaust fan is provided on the surface of the cooling box facing away from the storage box, and an air inlet of the exhaust fan is connected to the interior of the cooling box.

[0013] Preferably, the side surface of the battery cell placement plate matches the surface of the opposite limiting plate, one end of the connecting rod is a right-angle structure, and a sliding groove for the connecting rod to slide is provided on the inner side wall of the "U"-shaped limiting half frame.

[0014] Preferably, a clamping plate is rotatably connected to the inner portion of the battery cell placement plate near the corner, and a spiral clamp is passed through the clamping plate.

[0015] Preferably, a connecting plate and a filter screen are provided on the sealing plate, and a collecting cover is provided on the other end of the connecting plate.

[0016] Preferably, the filter screen includes an outer frame and an inner mesh plate, a filter bag is provided on the outer side of the filter screen, the collecting cover is a conical shell structure with one end narrow d1 and the other end wide d2, and the narrow end d1 of the collecting cover bends and extends toward the wide end d2, and the inner surface of the collecting cover is provided with sound insulation cotton d3.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the present invention, when cooling the battery cell A, the cooling fan is started, and the cold air gas enters the storage box, and then the cold air gas flows through the first air pipe into the diversion pipe. After that, the cold air gas is diverted and flows through the second air pipe into the cooling pipe. The cold air gas in the cooling pipe is ejected from the nozzle, and the cold air gas is sprayed onto both sides of the battery cell A, which can accelerate the heat dissipation on the surface of the battery cell A and achieve the purpose of cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a side structural diagram of the cooling box of the present invention;

[0021] Figure 3 For the utility model Figure 2 Schematic diagram of the structure of the limiting half frame in the middle cooling box in the BB direction;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the limiting half frame of the utility model;

[0023] Figure 5 For the utility model Figure 3 The enlarged structural diagram of the middle C part;

[0024] Figure 6 This is a schematic diagram of the top view of the collecting cover of the present invention;

[0025] Figure 7 This is a schematic diagram of the three-dimensional structure of the current collecting cover of the present utility model;

[0026] In the figure: 3. Sealing plate; 5. Exhaust fan; 11. Cooling box; 12. Box door; 13. Battery cell placement plate; 21. Storage box; 22. Cooling fan; 23. First air pipe; 24. Diverter pipe; 25. Second air pipe; 26. Cooling pipe; 31. Connecting plate; 32. Collecting cover; 33. Filter screen; 34. Filter bag; 41. Rotating cylinder; 42. Limiting half frame; 43. Moving plate; 44. Limiting plate; 51. Adjusting slide cylinder; 52. Connecting rod; 131. Clamp; 132. Screw chuck; 261. Nozzle; 431. Electromagnet. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] See also Figures 1 to 5 The utility model provides a technical solution: a cooling device for solar cell screen printing, comprising a cooling mechanism for cooling battery cell A, comprising a cooling box 11, a box door 12 hinged to the cooling box 11, and a battery cell placement plate 13 installed inside the cooling box 11. The battery cell A is placed inside the cooling box 11 for cooling. The box door 12 and the cooling box 11 are in a closed and sealed state. The cooling fan 22 is started and delivers a cold air flow, so that the interior of the cooling box 11 is in a low temperature and air circulation state, so as to achieve the purpose of heat dissipation and cooling of the battery cell A; the cold air delivery cooling mechanism comprises a storage box 21 and a sealing plate 3 installed on the outer surface of the cooling box 11, a cooling fan 22 installed on the storage box 21, an air delivery fan 22, and an air delivery fan 22. The storage box 21 is firmly screwed with the cooling box 11 and the cooling fan 22 by screws. The cooling fan 22 is started and delivers cold air. The air delivery component includes a first air delivery pipe 23 connected to the interior of the storage box 21 at one end, a shunt pipe 24 connected to the other end of the first air delivery pipe 23, a second air delivery pipe 25 connected to the shunt pipe 24 at one end and inserted into the interior of the cooling box 11 at the other end, and a cooling pipe 26 connected to the other end of the second air delivery pipe 25. The cooling pipe 26 is provided with equidistantly distributed nozzles 261, and the nozzles 261 are connected to the cooling pipe 26. When cooling the battery cell A, the cooling fan 22 is started, and the cold air enters the interior of the storage box 21. Then the cold air flows through the first air delivery pipe 23 and enters the shunt pipe 24. The flow tube 24, after which the cold air is diverted and flows through the second air delivery pipe 25 into the cooling pipe 26. The cold air in the cooling pipe 26 is ejected from the nozzle 261, which can accelerate the heat dissipation on the surface of the battery cell A and achieve the purpose of cooling; the rotating mechanism includes a rotating cylinder 41 installed on the cooling box 11, a limiting half frame 42 connected to the output shaft of the rotating cylinder 41, a moving plate 43 that matches the inner wall of the limiting half frame 42, a limiting plate 44 that is perpendicular to the moving plate 43, and an adjusting component installed in the limiting half frame 42. The rotating cylinder 41 is screwed together with the cooling box 11 by screws, and the limiting plate 44 is screwed together with the moving plate 43 by screws. The moving plate 43 is provided with an electromagnet 431, and the electromagnet 431 is connected to the cooling box 11 by screws. The movable plate 43 is screwed together by screws, and the electromagnet 431 is firmly attached to the battery cell placement plate 13 by magnetic adsorption, so that the battery cell A fixed inside the battery cell placement plate 13 is in a firm state. The adjustment component includes an adjustment slide cylinder 51 installed in the limiting half frame 42, and a connecting rod 52 with the slide on the adjustment slide cylinder 51 and the movable plate 43 at both ends. The adjustment slide cylinder 51 is screwed together with the limiting half frame 42 and the connecting rod 52 by screws. When the slide on the adjusting slide cylinder 51 drives the connecting rod 52 to move back and forth in a straight line, the connecting rod 52 drives the movable plate 43 to move back and forth in a straight line, so that the battery cell placement plate 13 and the battery cell A move in the same direction, and heat can be dissipated at different positions on the battery cell A.

[0030] In this embodiment, the cold air path delivered by the cooling fan 22 is the storage box 21, the first air pipe 23 in direction a, the diversion pipe 24, the second air pipe 25 in direction b, the cooling pipe 26 to the nozzle 261. The cooling fan 22 is started, and the cold air gas enters the interior of the storage box 21. Then, the cold air gas flows through the first air pipe 23 into the diversion pipe 24. After that, the cold air gas is diverted and flows through the second air pipe 25 into the cooling pipe 26. The cold air gas in the cooling pipe 26 is ejected from the nozzle 261, which can accelerate the heat dissipation on the surface of the battery cell A and achieve the purpose of cooling.

[0031] In this embodiment, the rotating cylinder 41 drives the limiting half frame 42 and the movable plate 43 to rotate 180 degrees in the direction c, and the rotating cylinder 41 drives the limiting half frame 42 and the movable plate 43 to flip over, and then flip the battery cell placement plate 13 and the battery cell A, so that the battery cell A can be cooled on both sides.

[0032] In this embodiment, an exhaust fan 5 is provided on the surface of the cooling box 11 facing away from the storage box 21. The exhaust fan 5 is connected to the cooling box 11 by screws. The air inlet of the exhaust fan 5 is connected to the inside of the cooling box 11. When the exhaust fan 5 is started, it can suck the gas inside the cooling box 11 to increase air convection.

[0033] In this embodiment, the side surface of the battery cell placement plate 13 is consistent with the surface of the opposite limiting plate 44, the battery cell placement plate 13 is limited by the limiting plate 44, one end of the connecting rod 52 is a right-angle structure, and the inner side wall of the "U"-shaped limiting half frame 42 is provided with a sliding groove for the connecting rod 52 to slide, and the connecting rod 52 is limited by the limiting half frame 42.

[0034] In this embodiment, a clamp 131 is rotatably connected to the inner corner of the battery cell placement plate 13, and a spiral clamp 132 is passed through the clamp 131. The battery cell placement plate 13 is a frame structure, which allows the battery cell A inside to be suspended in the air. The clamp 131 clamps the suspended battery cell A, and the spiral clamp 132 made of rubber material is a spiral columnar structure, which can further clamp the battery cell A.

[0035] To sum up: when cooling the battery cell A, the cooling fan 22 is started, and the cold air gas enters the storage box 21, and then the cold air gas flows through the first air pipe 23 into the diversion pipe 24, and then the cold air gas is diverted and flows through the second air pipe 25 into the cooling pipe 26, and the cold air gas in the cooling pipe 26 is ejected from the nozzle 261, and the cold air gas is sprayed onto both sides of the battery cell A. Under the joint action of the rotating cylinder 41 and the adjusting slide cylinder 51, the position of the battery cell A can be changed, and heat can be dissipated at different positions on its surface, which can accelerate the heat dissipation of the surface of the battery cell A and achieve the purpose of cooling.

[0036] Example 2

[0037] See also Figures 1 to 7 The filter screen 33 is provided on the outer side of the filter screen 33, and the filter screen 33 is provided on the outer side of the filter screen 33. The filter screen 33 is provided with a filter bag 34 on the outer side of the filter screen 33. The filter screen 33 and the filter bag 34 play the role of filtering impurities in the cold air. The filter screen 33 and the filter bag 34 play the role of filtering impurities in the cold air. The filter screen 33 is a conical shell structure with a narrow end d1 and a wide end d2 at the other end, and the narrow end d1 of the filter screen 32 is bent and extended toward the wide end d2. The inner surface of the filter screen 32 is provided with sound insulation cotton d3. When the sealing plate 3 is tightly fitted with the storage box 21, the filter screen 32 is opposed to the cooling fan 22, which is conducive to the cold air passing through the filter screen 32, so as to filter the cold air concentrated through the filter screen 32, and the sound insulation cotton d3 has a noise reduction effect.

[0038] In summary, when the sealing plate 3 is tightly fitted to the storage box 21 , the collecting cover 32 is opposed to the cooling fan 22 , which facilitates the cold air to pass through the collecting cover 32 , so as to facilitate filtering the cold air passing through the collecting cover 32 .

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling device for solar cell screen printing, characterized in that: include A cooling mechanism for cooling a battery cell A, comprising a cooling box (11), a door (12) hinged to the cooling box (11), and a battery cell placement plate (13) installed inside the cooling box (11); A cold air delivery and cooling mechanism comprises a storage box (21) and a sealing plate (3) mounted on the outer surface of a cooling box (11), a cooling fan (22) mounted on the storage box (21), and an air delivery assembly, wherein the air delivery assembly comprises a first air delivery pipe (23) one end of which is connected to the interior of the storage box (21), a shunt pipe (24) connected to the other end of the first air delivery pipe (23), a second air delivery pipe (25) one end of which is connected to the shunt pipe (24) and the other end of which is inserted into the interior of the cooling box (11), and a cooling pipe (26) connected to the other end of the second air delivery pipe (25), wherein nozzles (261) are equidistantly distributed on the cooling pipe (26); The rotating mechanism comprises a rotating cylinder (41) installed on a cooling box (11), a limiting half frame (42) connected to the output shaft of the rotating cylinder (41), a moving plate (43) matched with the inner wall of the limiting half frame (42), a limiting plate (44) perpendicular to the moving plate (43), and an adjusting component installed in the limiting half frame (42). The moving plate (43) is provided with an electromagnet (431). The adjusting component comprises an adjusting slide cylinder (51) installed in the limiting half frame (42), and a connecting rod (52) with two ends respectively connected to the slide on the adjusting slide cylinder (51) and the moving plate (43).

2. The solar cell screen printing cooling device according to claim 1, characterized in that: The cold air path delivered by the cooling fan (22) is the storage box (21), direction a in the first air delivery pipe (23), the diversion pipe (24), direction b in the second air delivery pipe (25), the cooling pipe (26) to the nozzle (261).

3. The solar cell screen printing cooling device according to claim 1, characterized in that: The rotating cylinder (41) drives the limiting half frame (42) and the moving plate (43) to rotate forward and reverse 180 degrees along the c direction.

4. The solar cell screen printing cooling device according to claim 1, characterized in that: An exhaust fan (5) is provided on the surface of the cooling box (11) facing away from the storage box (21), and an air inlet of the exhaust fan (5) is connected to the interior of the cooling box (11).

5. The solar cell screen printing cooling device according to claim 1, characterized in that: The side surface of the battery cell placement plate (13) matches the surface of the opposite limiting plate (44), one end of the connecting rod (52) is a right-angle structure, and a sliding groove for the connecting rod (52) to slide is provided on the inner side wall of the "U"-shaped limiting half frame (42).

6. The solar cell screen printing cooling device according to claim 1, characterized in that: A clamping plate (131) is rotatably connected to the inner portion of the battery cell placement plate (13) near the corner, and a spiral clamp (132) passes through the clamping plate (131).

7. The solar cell screen printing cooling device according to claim 1, characterized in that: A connecting plate (31) and a filter screen (33) are provided on the sealing plate (3), and a collecting cover (32) is provided on the other end of the connecting plate (31).

8. The solar cell screen printing cooling device according to claim 7, characterized in that: The filter screen (33) includes an outer frame and an inner mesh plate. A filter bag (34) is provided on the outer side of the filter screen (33). The collecting cover (32) is a conical shell structure with a narrow end d1 and a wide end d2. The narrow end d1 of the collecting cover (32) is bent and extended toward the wide end d2. The inner surface of the collecting cover (32) is provided with sound insulation cotton d3.

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