Airflow cooling device for improving cooling efficiency of photovoltaic welding strip

Abstract

The invention relates to an airflow cooling device for improving the cooling efficiency of a photovoltaic welding strip, and belongs to the technical field of photovoltaic welding strip production. The airflow cooling device comprises a base, a cooling box is fixed to the upper surface of the base, a feeding port is formed in one side of the cooling box, a discharging port is formed in the other side of the cooling box, an air cooler is fixed to the top of the cooling box, and an air guide pipe is fixed to the groove top of an inner cavity of the cooling box; according to the airflow cooling device capable of improving the cooling efficiency of the photovoltaic welding strip, the distance between the air opening and a copper wire of the photovoltaic welding strip is adjusted through the electric push rod, so that cold air makes contact with the copper wire of the photovoltaic welding strip at the optimal temperature, and the cooling efficiency of the photovoltaic welding strip is improved while airflow cooling is conducted. The multiple cooling air ports continuously move in a reciprocating mode, cold air can cover the surface of the photovoltaic welding strip copper wire more evenly, the relative speed between the nozzle and the photovoltaic welding strip copper wire can be reduced, the time of the photovoltaic welding strip copper wire acted by cooling airflow is prolonged, the contact time is prolonged, and the cooling effect is improved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic ribbon production technology, and in particular to an airflow cooling device for improving the cooling efficiency of photovoltaic ribbons. Background Technology

[0002] Photovoltaic welding ribbons are divided into busbars and interconnecting strips, which are used to connect photovoltaic module cells and play an important role in conducting electricity and concentrating. Photovoltaic welding ribbons are usually designed to be circular. The circular shape facilitates continuous production of welding ribbons and can improve production efficiency. Secondly, the uniform cross-section of the circular welding ribbon is conducive to the uniform distribution of heat during welding, thereby ensuring the stability and reliability of welding quality.

[0003] Photovoltaic ribbons typically use copper as the base material. Because copper wire has excellent conductivity and ductility, a large amount of heat is generated during the production process due to friction, stretching, or electric current. If not cooled promptly, this heat will accumulate, causing the copper wire to overheat and affecting its mechanical properties and quality. To avoid these problems, forced airflow is used on the production line to cool the copper wires in the photovoltaic ribbon.

[0004] According to Chinese Patent No. CN213596360U, a photovoltaic welding strip cooling device and photovoltaic welding strip processing equipment are disclosed. The photovoltaic welding strip can pass between the first guide wheel and the second guide wheel, which can guide the photovoltaic welding strip and avoid significant shaking of the photovoltaic welding strip, thereby avoiding photovoltaic welding strip flipping and increasing the defect rate.

[0005] According to Chinese Patent No. CN207468704U, a photovoltaic solder ribbon rapid cooling device is disclosed. The jet pipe blows air at an angle upward, which can prevent the cooling water mist from flowing out of the inlet hole along the solder ribbon after converging on the surface of the solder ribbon. At the same time, it reduces the impact of the airflow on the incompletely solidified tin plating layer on the surface of the solder ribbon that has just entered the cooling tank.

[0006] When the above-mentioned photovoltaic ribbon cooling device performs airflow cooling, the air outlets are all fixed. Therefore, it is impossible to adjust the distance between the nozzle and the photovoltaic ribbon according to the size of the photovoltaic ribbon. This results in an excessively large distance affecting the cooling efficiency, and an excessively small distance causing overcooling or uneven local cooling. Summary of the Invention

[0007] Therefore, it is necessary to provide an airflow cooling device that improves the cooling efficiency of photovoltaic ribbons, addressing the problem that when photovoltaic ribbon cooling devices perform airflow cooling, the air outlets are all fixed, making it impossible to adjust the distance between the nozzle and the photovoltaic ribbon according to the size of the photovoltaic ribbon. This results in excessively large distances affecting cooling efficiency, and excessively small distances causing overcooling or uneven local cooling.

[0008] An airflow cooling device for improving the cooling efficiency of photovoltaic welding strips includes a base, a cooling box fixed on the upper surface of the base, an inlet on one side of the cooling box and an outlet on the other side, a cold air fan fixed on the top of the cooling box, an air duct fixed on the top of the inner cavity of the cooling box, the air inlet of the air duct and the air outlet of the cold air fan being connected by a pipeline, multiple transfer boxes connected below the air duct, several nozzles fixed at the bottom of the transfer boxes, a movable plate slidably mounted on the inner cavity wall of the cooling box below the air duct, a movable slot penetrating the movable plate, several transfer boxes being disposed in the movable slot and slidably connected to the movable slot, and a power component for controlling the movement of the transfer boxes along the long side of the movable plate on the movable plate.

[0009] Furthermore, the power assembly includes two lugs fixed to the upper surface of the movable plate, with a drive rod rotatably connected between the two lugs. One of the lugs is fixed with a motor that controls the rotation of the drive rod. Several reciprocating screws are integrated on the drive rod, and the transfer box is sleeved on the reciprocating screws and threadedly connected to the reciprocating screws.

[0010] Furthermore, multiple sealing plates are fixed inside the movable slot, and each transfer box is located between two adjacent sealing plates. Movable frames are fixed on both sides of the transfer box, and the movable frames are fitted outside the sealing plates and slidably connected to the sealing plates.

[0011] Furthermore, multiple first branch pipes are evenly fixed at the bottom of the air duct along the center line. Each first branch pipe is slidably connected to a second branch pipe. The bottom end of the second branch pipe extends out of the first branch pipe. A corrugated telescopic pipe is coaxially fixed at the bottom end of the second branch pipe extending out of the first branch pipe. The bottom end of the corrugated telescopic pipe is fixed to the adjacent transfer box. Two electric push rods are fixed at the top of the cooling box. A drive frame is fixed at the top of the moving plate. The extended ends of the electric push rods penetrate into the cooling box and are slidably connected to the cooling box. The extended ends of the two electric push rods that penetrate into the inner cavity of the cooling box are fixedly connected to the drive frame.

[0012] Furthermore, several moving rods are fixed to the top of the moving plate, and several fixed tubes are fixed to the top of the inner cavity of the cooling box. The end of the fixed tube away from the cooling box enters the moving rod and is slidably connected to the moving rod. The fixed tube entering the moving rod is fixedly connected to the top of the inner cavity of the moving rod by a first spring.

[0013] Furthermore, an air outlet pipe is fixed at the bottom of the transfer box and sleeved outside the nozzle. An installation plate is detachably fixed to the inner wall of the air outlet pipe. The two sides of the installation plate bend and extend towards one side of the inner cavity of the air outlet pipe. A V-shaped air guide plate is integrated in the middle of the outer surface of the installation plate.

[0014] Furthermore, a guide frame located inside the cooling box is fixed at the feed inlet end, and a guide groove is opened on one side of the guide frame, with the feed inlet and the guide groove communicating with each other.

[0015] Furthermore, a guide plate is fixedly installed on the inner bottom wall of the cooling box, and the top of the guide plate is set as an inclined surface.

[0016] Furthermore, the cooling box is equipped with a heat dissipation plate located on the lower side of multiple transfer boxes, and multiple contact fins are fixedly installed on the surface of the heat dissipation plate.

[0017] Furthermore, connecting blocks are fixedly connected to the four corners of the heat sink, and multiple connecting plates are fixedly installed on the inner bottom wall of the cooling box. A moving groove is opened on the upper surface of the connecting plate. The bottom end of the connecting block enters the moving groove of the connecting plate and slides in connection with the moving groove. The bottom end of the connecting block is fixedly connected to the bottom of the moving groove by a second spring.

[0018] The aforementioned airflow cooling device for improving the cooling efficiency of photovoltaic solder ribbons uses an electric push rod to provide power and adjust the vertical position of the integrated drive frame and moving plate. This allows for adjustment of the distance between the air vents and the copper wires of the photovoltaic solder ribbon, ensuring that the cold air contacts the copper wires at the optimal temperature. While the airflow is cooling, multiple cooling vents move back and forth continuously, which not only allows the cold air to cover the surface of the copper wires more evenly but also reduces the relative speed between the nozzles and the copper wires. This increases the time the copper wires are exposed to the cooling airflow, thus increasing the contact time and improving the cooling effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the protective cooling mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the cooling box of the present invention;

[0023] Figure 4 This is a schematic diagram of the movable plate structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the active cooling component structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the transfer box and nozzle structure of the present invention;

[0026] Figure 7This is a schematic diagram of the protective component structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the guide frame and guide groove structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the connecting plate and connecting block structure of the present invention;

[0029] Figure 10 This is a schematic cross-sectional view of the air outlet duct of the present invention;

[0030] Figure 11 This is a schematic diagram illustrating the structure of the air guide plate of the present invention.

[0031] Figure label:

[0032] 100. Base; 110. Feed inlet; 120. Discharge outlet; 200. Cooling box; 300. Protective cooling mechanism; 310. Air cooler; 320. Movable cooling mechanism; 321. Moving plate; 322. Air duct; 323. Movable slot; 324. Transfer box; 325. Nozzle; 326. Motor; 327. Drive rod; 328. Reciprocating screw; 329. Electric push rod; 3210. Drive frame; 3211. First branch pipe; 3212. Second... Branch pipe; 3213, fixed pipe; 3214, moving rod; 3215, first spring; 3216, movable frame; 3217, sealing plate; 332, rubber conveyor belt; 333, guide frame; 334, guide groove; 335, guide plate; 336, heat dissipation plate; 337, contact fins; 338, connecting block; 339, connecting plate; 3310, moving groove; 3311, second spring; 400, air outlet pipe; 410, mounting plate; 420, air guide plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0035] 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 invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.

[0037] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0038] The following is combined Figures 1-11 This invention describes an airflow cooling device for improving the cooling efficiency of photovoltaic ribbons.

[0039] like Figure 2 , Figure 3 , Figure 5 and Figure 7As shown, in one embodiment, an airflow cooling device for improving the cooling efficiency of photovoltaic welding ribbon includes: a base 100, a cooling box 200 fixedly installed on the top of the base 100, an inlet 110 on one side of the cooling box 200 and an outlet 120 on the other side, a cold air fan 310 fixedly installed on the top of the cooling box 200, an air duct 322 fixedly installed on the top of the inner cavity of the cooling box 200, the air inlet of the air duct 322 being connected to the air outlet of the cold air fan 310 through a pipeline, a plurality of transfer boxes 324 being connected below the air duct 322, and a plurality of nozzles 325 being fixedly installed at the bottom of the transfer box 324, the nozzles 325 being fan-shaped.

[0040] like Figure 2 , Figure 3 , Figure 4 , Figure 5 ,and Figure 6 As shown, a movable plate 321 located below the air duct 322 is slidably connected to the inner cavity of the cooling box 200. A movable slot 323 runs through the movable plate 321. Several transfer boxes 324 are arranged in the movable slot 323 and slidably connected to the movable slot 323. A power component is provided on the movable plate 321 to control the transfer boxes 324 to move along the long side of the movable plate 321.

[0041] In this embodiment, the produced photovoltaic solder ribbon copper wire is introduced into the interior of the cooling box 200 through the feed port 110, so that the photovoltaic solder ribbon copper wire is close to the nozzle 325. Power is provided by the power component to drive multiple cooling air vents to move back and forth continuously, so that the cold air can more evenly cover the entire surface of the photovoltaic solder ribbon copper wire, improving the heat dissipation effect of the photovoltaic solder ribbon copper wire, thereby improving the cooling efficiency.

[0042] like Figure 2 , Figure 3 , Figure 4 , Figure 5 ,and Figure 6 As shown, the power assembly includes two lugs fixed to the upper surface of the movable plate 321, with a drive rod 327 rotatably connected between the two lugs. A motor 326 that controls the rotation of the drive rod 327 is fixed on one of the lugs. Several reciprocating screws 328 are integrated on the drive rod 327. The transfer box 324 is sleeved on the reciprocating screws 328 and threadedly connected to them. The reciprocating screws 328 are in the form of two threaded grooves with the same pitch and opposite directions, connected at both ends by a transition curve. The rotation of the reciprocating screws 328 causes the side of the spiral groove to push the slider placed in the spiral groove to perform axial reciprocating motion. The motor 326 provides power to drive the drive rod 327, which is coaxially fixed to the output shaft of the motor 326, to rotate, thereby driving the reciprocating screws 328, which are coaxially fixed to the drive rod 327, to rotate, thus realizing the movement of the transfer box 324 within the movable groove 323.

[0043] like Figure 2 , Figure 3 , Figure 4 , Figure 5 ,and Figure 6 As shown, multiple sealing plates 3217 are fixed inside the movable groove 323, and each transfer box 324 is located between two adjacent sealing plates 3217. Movable frames 3216 are fixed on both sides of the transfer box 324. The movable frames 3216 are sleeved on the outside of the sealing plates 3217 and are slidably connected to the sealing plates 3217. When the transfer box 324 moves in the horizontal direction, the cooperation between the sealing plates 3217 and the movable frames 3216 plays a guiding and limiting role in the movement of the transfer box 324.

[0044] like Figure 2 , Figure 3 , Figure 4 , Figure 5 ,and Figure 6 As shown, multiple first branch pipes 3211 are evenly fixed at the bottom of the air duct 322 along the center line. Each first branch pipe 3211 is slidably connected to a second branch pipe 3212. The bottom end of the second branch pipe 3212 extends out of the first branch pipe 3211. A corrugated telescopic pipe is coaxially fixed at the bottom end of the second branch pipe 3212 extending out of the first branch pipe 3211. The bottom end of the corrugated telescopic pipe is fixed to the adjacent transfer box 324. A rubber sealing ring is fixed on the outer circumference of the second branch pipe 3212 to seal the gap between the first branch pipe 3211 and the second branch pipe 3212. Through the cooperation of the first branch pipe 3211, the second branch pipe 3212 and the corrugated telescopic pipe, the movement of the transfer box in the vertical and horizontal directions is not affected, while the cold air in the air duct 322 enters the transfer box 324 along the movement path of the first branch pipe 3211, the second branch pipe 3212 and the corrugated telescopic pipe, and enters the air outlet duct 400 through the nozzle 325.

[0045] like Figure 2 , Figure 3 , Figure 4 , Figure 5 ,and Figure 6 As shown, two electric push rods 329 are fixed on the top of the cooling box 200, and a drive frame 3210 is fixed on the top of the moving plate 321. The extended ends of the electric push rods 329 are inserted into the cooling box 200 and slidably connected to the cooling box 200. The extended ends of the two electric push rods 329 inserted into the inner cavity of the cooling box 200 are fixedly connected to the drive frame 3210. Power is provided by the electric push rods 329 to adjust the distance between the air vent and the photovoltaic soldering copper wire so that the cold air contacts the photovoltaic soldering copper wire at the optimal temperature. The air cooler 310 adjusts the distance between the air vent and the photovoltaic soldering copper wire through the movable cooling component 320 so that the cold air contacts the photovoltaic soldering copper wire at the optimal temperature.

[0046] like Figure 2 , Figure 3 , Figure 4 , Figure 5,and Figure 6 As shown, a number of moving rods 3214 are fixed to the top of the moving plate 321, and a number of fixed tubes 3213 are fixed to the top of the inner cavity of the cooling box 200. The end of the fixed tube 3213 away from the cooling box 200 enters the moving rod 3214 and is slidably connected to the moving rod 3214. The fixed tube 3213 entering the moving rod 3214 is fixedly connected to the top of the inner cavity of the moving rod 3214 by a first spring 3215.

[0047] like Figure 10 and Figure 11 As shown, an air outlet duct 400 is fixed at the bottom of the transfer box 324 and sleeved outside the nozzle 325. An installation plate 410 is detachably fixed to the inner wall of the air outlet duct 400. The two sides of the installation plate 410 bend and extend towards one side of the inner cavity of the air outlet duct 400. A V-shaped air guide plate is integrated in the middle of the outer surface of the installation plate 410. By providing an integrated installation plate 410 and air guide plate in the air outlet duct 400, airflow separation is triggered and turbulence is formed. The intense disturbance of the turbulence causes the cold air to continuously impact the surface of the photovoltaic welding ribbon, thinning the laminar boundary layer that hinders heat conduction and improving cooling efficiency.

[0048] like Figure 2 , Figure 3 , Figure 4 , Figure 5 ,and Figure 6 As shown, a guide frame 333 is fixed at the end of the feed inlet 110 and located inside the cooling box 200. A guide groove 334 is provided on one side of the guide frame 333. The feed inlet 110 and the guide groove 334 are interconnected. By setting the guide frame 333 and the guide groove 334, the airflow of the cooling air outlet is guided to form an air curtain, which effectively blocks external gas and impurities, keeps the inside of the cooling box 200 clean, prevents external pollutants from affecting the copper wire of the photovoltaic welding ribbon, and improves product quality. Two rubber conveyor belts 332 stacked one on top of the other are provided inside the discharge port 120. The adjacent sides of the two rubber conveyor belts 332 are close to each other.

[0049] like Figure 2 , Figure 3 , Figure 7 , Figure 8 ,and Figure 9As shown, a guide plate 335 is fixedly installed on the inner bottom wall of the cooling box 200. The top of the guide plate 335 is set as an inclined surface. A heat dissipation plate 336 is provided inside the cooling box 200. The heat dissipation plate 336 is located on the lower side of multiple transfer boxes 324. Multiple contact fins 337 are fixedly installed on the surface of the heat dissipation plate 336. Connecting blocks 338 are fixedly connected to the four corners of the heat dissipation plate 336. Multiple connecting plates 339 are fixedly installed on the inner bottom wall of the cooling box 200. A moving groove 3310 is opened on the upper surface of the connecting plate 339. The bottom end of the connecting block 338 enters the moving groove 3310 of the connecting plate 339 and slides in connection with the moving groove 3310. The bottom end of the connecting block 338 is fixedly connected to the bottom of the moving groove 3310 by a second spring 3311.

[0050] In use, when cooling the copper wire of the photovoltaic welding ribbon, the airflow from the cooler 310 is delivered into the air duct 322, and then transported through multiple first branch pipes 3211, second branch pipes 3212, and corrugated telescopic pipes to the corresponding transfer box 324. The air is then sprayed out through multiple nozzles 325 connected to the transfer box 324 and the outlet pipe 400. First, two electric push rods 329 are activated to move the drive frame 3210, which in turn moves the moving plate 321, simultaneously changing the distance between the multiple transfer boxes 324, the corresponding nozzles 325, and the photovoltaic welding ribbon copper wire. This ensures that the airflow contacts the photovoltaic welding ribbon copper wire at a suitable temperature when outputting the cooling airflow, improving the cooling effect. Furthermore, when the nozzles 325 output cooling airflow, the motor 326 can be activated to rotate the drive rod 327, which in turn rotates multiple reciprocating screws 328 simultaneously. Multiple reciprocating screws 328 and multiple transfer boxes 324 are threaded together, causing the multiple transfer boxes 324 to reciprocate on the reciprocating screws 328. This synchronously drives the corresponding multiple nozzles 325 to reciprocate. The movement of the nozzles 325 and the air outlet duct 400 causes changes in the direction and speed of the airflow, increasing the turbulence. Turbulence has a higher heat transfer efficiency than laminar flow, and can more effectively remove the heat from the surface of the photovoltaic welding ribbon copper wire, improving the cooling effect. Furthermore, the reciprocating movement of the nozzles 325 and the air outlet duct 400 reduces the relative speed between the nozzles 325, the air outlet duct 400 and the photovoltaic welding ribbon copper wire when the photovoltaic welding ribbon copper wire passes through. This allows the same section of photovoltaic welding ribbon copper wire to be subjected to the cooling airflow for a longer period of time when passing through the nozzles 325 and the air outlet duct 400, thereby increasing the contact time and further improving the cooling effect.

[0051] After cooling, the photovoltaic welding strip copper wire is discharged through the discharge port 120. During discharge, the rubber conveyor belts 332 located on both sides of the discharge port 120 rotate, wrapping around the outside of the photovoltaic welding strip copper wire to prevent airflow from the discharge port 120 side. The cooling airflow moves towards the bottom wall of the cooling box 200 after passing through the photovoltaic welding strip copper wire, and comes into contact with the guide plate 335. It is then guided by the inclined surface of the guide plate 335 into the guide groove 334, and then through the guide groove 334 to the inlet 110. This allows the cooling airflow to form an air curtain at the inlet 110 to prevent external gases and impurities from entering, and also to cool the newly entered photovoltaic welding strip copper wire. The copper wire is used for initial cooling to reduce its temperature and alleviate the subsequent cooling load. The contact ends of multiple contact fins 337 are all set in an arc shape. When the photovoltaic soldering copper wire passes through the cooling box 200, the second spring 3311 can push the connecting plate 339 to move the heat sink 336 upward, so that multiple contact fins 337 come into contact with the photovoltaic soldering copper wire, and quickly conduct the heat of the photovoltaic soldering copper wire to the heat sink 336. The multiple contact fins 337 are spaced apart and located below the nozzle 325, so they can be cooled by the cooling airflow together with the photovoltaic soldering copper wire, improving the performance of the contact fins 337.

[0052] It should be noted that the air cooler, motor, and electric actuator mentioned above are all components with relatively mature existing technologies. The specific models can be selected according to actual needs. At the same time, the air cooler, motor, and electric actuator can be powered by the built-in power supply or by AC power. The specific power supply method should be selected according to the situation, and will not be elaborated here.

[0053] 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.

[0054] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An airflow cooling device for improving the cooling efficiency of photovoltaic ribbons, characterized in that, The device includes a base (100), a cooling box (200) fixed on the upper surface of the base (100), and a feed inlet (110) on one side and a discharge outlet (120) on the other side. The cooling device further includes: The protective cooling mechanism (300) includes a cold air blower (310) fixed on the top of the cooling box (200), a duct (322) fixed on the top of the inner cavity of the cooling box (200), the air inlet of the duct (322) and the air outlet of the cold air blower (310) are connected through a pipeline, and multiple transfer boxes (324) are connected below the duct (322), and several nozzles (325) are fixed at the bottom of the transfer box (324). The movable cooling mechanism (320) includes a movable plate (321) disposed on the inner wall of the cooling box (200) and located below the air duct (322). A movable slot (323) runs through the movable plate (321). Several transfer boxes (324) are disposed in the movable slot (323) and slidably connected to the movable slot (323). The movable plate (321) is provided with a power component for controlling the transfer boxes (324) to move along the long side of the movable plate (321).

2. The airflow cooling device for improving the cooling efficiency of photovoltaic ribbons according to claim 1, characterized in that, The power assembly includes two lugs fixed to the upper surface of the movable plate (321), and a drive rod (327) is rotatably connected between the two lugs. A motor (326) for controlling the rotation of the drive rod (327) is fixed on one of the lugs. Several reciprocating screws (328) are integrated on the drive rod (327). A transfer box (324) is sleeved on the reciprocating screws and threadedly connected to the reciprocating screws (328).

3. The airflow cooling device for improving the cooling efficiency of photovoltaic ribbons according to claim 2, characterized in that, Multiple spaced sealing plates (3217) are fixed inside the movable slot (323), and each transfer box (324) is located between two adjacent sealing plates (3217). Movable frames (3216) are fixed on both sides of the transfer box (324). The movable frames (3216) are fitted outside the sealing plates (3217) and are slidably connected to the sealing plates (3217).

4. The airflow cooling device for improving the cooling efficiency of photovoltaic ribbons according to claim 1, characterized in that, Multiple first branch pipes (3211) are evenly fixed at the bottom of the air duct (322) along the center line. A second branch pipe (3212) is slidably connected inside each first branch pipe (3211). The bottom end of the second branch pipe (3212) extends out of the first branch pipe (3211). A corrugated telescopic pipe is coaxially fixed at the bottom end of the second branch pipe (3212) extending out of the first branch pipe (3211). The bottom end of the corrugated telescopic pipe is fixed to the adjacent transfer box (324). Two electric push rods (329) are fixed at the top of the cooling box (200). A drive frame (3210) is fixed at the top of the moving plate (321). The extended ends of the electric push rods (329) are inserted into the cooling box (200) and slidably connected to the cooling box (200). The extended ends of the two electric push rods (329) inserted into the inner cavity of the cooling box (200) are fixedly connected to the drive frame (3210).

5. The airflow cooling device for improving the cooling efficiency of photovoltaic ribbons according to claim 1, characterized in that, A number of moving rods (3214) are fixed on the top of the moving plate (321), and a number of fixed tubes (3213) are fixed on the top of the inner cavity of the cooling box (200). The end of the fixed tube (3213) away from the cooling box (200) enters the moving rod (3214) and slides to connect with the moving rod (3214). The fixed tube (3213) entering the moving rod (3214) is fixedly connected to the top of the inner cavity of the moving rod (3214) by a first spring (3215).

6. The airflow cooling device for improving the cooling efficiency of photovoltaic ribbons according to claim 1, characterized in that, The bottom of the transfer box (324) is fixed with an air outlet pipe (400) sleeved outside the nozzle (325). The inner cavity wall of the air outlet pipe (400) is detachably fixed with an installation plate (410). The two sides of the installation plate (410) bend and extend towards one side of the inner cavity of the air outlet pipe (400). The outer surface of the installation plate (410) has an integrated V-shaped air guide plate (420) in the middle position.

7. The airflow cooling device for improving the cooling efficiency of photovoltaic ribbons according to claim 1, characterized in that, A guide frame (333) located inside the cooling box (200) is fixed at the end of the feed inlet (110). A guide groove (334) is provided on one side of the guide frame (333), and the feed inlet (110) and the guide groove (334) are connected to each other.

8. The airflow cooling device for improving the cooling efficiency of photovoltaic ribbons according to claim 1, characterized in that, A guide plate (335) is fixedly installed on the inner bottom wall of the cooling box (200), and the top of the guide plate (335) is set as an inclined surface.

9. The airflow cooling device for improving the cooling efficiency of photovoltaic ribbons according to claim 1, characterized in that, The cooling box (200) is equipped with a heat sink (336) inside. The heat sink (336) is located on the lower side of multiple transfer boxes (324). Multiple contact fins (337) are fixedly installed on the surface of the heat sink (336).

10. The airflow cooling device for improving the cooling efficiency of photovoltaic ribbons according to claim 9, characterized in that, Connecting blocks (338) are fixedly connected to the four corners of the heat sink (336). Multiple connecting plates (339) are fixedly installed on the inner bottom wall of the cooling box (200). A moving groove (3310) is opened on the upper surface of the connecting plate (339). The bottom end of the connecting block (338) enters the moving groove (3310) of the connecting plate (339) and is slidably connected to the moving groove (3310). The bottom end of the connecting block (338) is fixedly connected to the bottom of the moving groove (3310) by a second spring (3311).

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