Photovoltaic cell acetic acid attenuation test simulation device

Abstract

The utility model discloses a photovoltaic cell acetic acid attenuation test simulation device which comprises a device box body, a solution tank is arranged on the inner bottom surface of the device box body, a heating sheet is embedded in the bottom of the solution tank, and a grid plate is arranged on the top of the solution tank; the top of the grid plate is fixedly connected with a support, photovoltaic battery piece bodies are vertically arranged in the support at equal intervals, the side face of the device box body is provided with an air supply header pipe corresponding to the support, and the air supply header pipe is connected with air supply branch pipes corresponding to photovoltaic battery pieces. The acetic acid gas can be in uniform contact with the lower end and the upper end of the photovoltaic cell piece body, and the photovoltaic cell piece body is vertically placed, so that the surface of the photovoltaic cell piece body can be in contact with a light source and the acetic acid gas, and the detection accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic cell testing, and in particular to an acetic acid attenuation test simulation device for photovoltaic cells. Background Art

[0002] Photovoltaic cells are semiconductor devices that convert solar energy into electrical energy. They are the core component of photovoltaic power generation systems. Photovoltaic cells are usually encapsulated with EVA (ethylene-vinyl acetate copolymer) film. During long-term outdoor exposure, in addition to water vapor erosion, the EVA film will also degrade to produce acetic acid. The escaping acetic acid will corrode the electrode grid lines and welding strips of the solar cell, affecting the efficiency and safety of the solar photovoltaic module. Therefore, before the photovoltaic cells leave the factory, their acid resistance needs to be tested through a simulation device. The simulation device generally heats the acetic acid solution, places the photovoltaic cell on it for testing, and then judges the acid resistance based on the state of the photovoltaic cell before and after the test and the contact resistance test. During the test, the photovoltaic cell is generally placed flat on the acetic acid solution, and the acetic acid gas usually moves from bottom to top, and will contact more with the lower end of the photovoltaic cell. Therefore, there is a situation where the photovoltaic cell and the acetic acid gas are not in uniform contact, which affects the accuracy of subsequent testing.

[0003] For example, a "battery cell acetic acid attenuation test simulation device" disclosed in Chinese patent literature, with the announcement number: CN219936994U, discloses that it includes a cabinet and a control module. An inner plate is arranged in the cabinet to divide the inner cavity of the cabinet into an inner cavity and an outer cavity, and a heating module is arranged in the outer cavity; a temperature monitoring module, a humidity monitoring module, and an exhaust module are arranged in the inner cavity; the inner cavity includes a battery reaction area and a bearing area, and the battery reaction area and the bearing area are interconnected in water vapor. A fan module is arranged above the battery reaction area, and a multi-layer support frame is arranged in the bearing area, and each layer is sequentially placed with a silicon wafer basket, a humidity supplement box, and a solution container box; the control module is electrically connected to the heating module, the fan module, the temperature monitoring module, the humidity monitoring module, and the exhaust module. Summary of the invention

[0004] In order to solve the problem of uneven contact between photovoltaic cells and acetic acid gas in the prior art, the present invention provides a photovoltaic cell acetic acid attenuation test simulation device, so that acetic acid gas is in uniform contact with the lower and upper ends of the photovoltaic cell, thereby improving the accuracy of detection.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A photovoltaic cell acetic acid attenuation test simulation device, comprising: a device box, wherein the bottom surface of the device box is provided with a solution tank, the bottom of the solution tank is embedded with a heating plate, and the top is provided with a grid plate;

[0007] The top of the grid plate is fixedly connected with a bracket, the inside of the bracket is vertically arranged with photovoltaic cell bodies at equal intervals, and the side of the device box is provided with an air supply main pipe corresponding to the bracket, and the air supply main pipe is connected with an air supply branch pipe corresponding to the photovoltaic cell. The acetic acid gas can be evenly contacted with the lower end and the upper end of the photovoltaic cell body, and the photovoltaic cell body is placed vertically, so that the surface of the photovoltaic cell body can be in contact with the light source and the acetic acid gas, thereby improving the accuracy of the detection.

[0008] Preferably, the inner side walls of the device box are provided with temperature sensors and humidity sensors, which are arranged on the corresponding two side walls respectively, so as to monitor the temperature and humidity inside the device box.

[0009] Preferably, a clamping plate is fixedly provided on the bottom end surface of the grid plate, and the clamping plate is fitted with the solution tank; the grid plate is clamped with the side wall of the solution tank through the clamping plate, so as to facilitate positioning of the grid plate on the solution tank.

[0010] Preferably, the side of the bracket is provided with symmetrically arranged clamping seats, and the inside of the clamping seats is provided with rolling-matching rollers, and the surface of the rollers rolls on the outer surface of the photovoltaic cell body. The photovoltaic cell body is positioned, and the rollers are in rolling contact with the photovoltaic cell body, which not only facilitates the taking and placing of the photovoltaic cell body, but also prevents the wear of the photovoltaic cell body.

[0011] Preferably, the device comprises an induced draft fan, the induced draft fan is connected to an exhaust pipe, the end of the exhaust pipe extends to the inside of the device box and is connected to the solution tank, so as to extract part of the acetic acid gas in the solution tank.

[0012] Preferably, the induced draft fan is connected to an air supply pipe, the end of which extends to the interior of the device box and is connected to the main air supply pipe, so as to facilitate the delivery of acetic acid gas to the main air supply pipe.

[0013] Preferably, the air supply branch pipes include a plurality of air supply branch pipes arranged at equal distances, each air supply branch pipe has an air outlet on its side, and the air outlet extends along the axial direction of the air supply branch pipe, thereby improving the uniformity of air supply.

[0014] Preferably, a box door is provided on the side of the device box, and a handle is provided on the outer end surface of the box door; the box door is rotatably connected to a side edge of the device box to realize the opening and closing of the box.

[0015] The present invention has the following advantages:

[0016] (1) The acetic acid gas can be in uniform contact with the lower and upper ends of the photovoltaic cell body, and the photovoltaic cell body is placed upright so that the surface of the photovoltaic cell body can be in contact with the light source and the acetic acid gas, thereby improving the accuracy of detection; (2) The roller positions the photovoltaic cell body, and the roller and the photovoltaic cell body are in rolling contact, which not only facilitates the removal and placement of the photovoltaic cell body, but also prevents the wear of the photovoltaic cell body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described below are merely exemplary. A person skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0018] Figure 1 It is a front view structural schematic diagram in the embodiment.

[0019] Figure 2 It is a side view structural schematic diagram in the embodiment.

[0020] Figure 3 It is a schematic diagram of the enlarged structure of the air supply main pipe in the embodiment when viewed from above.

[0021] Figure 4 1 is a schematic diagram of an enlarged top view of the grid plate in the embodiment.

[0022] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at point A in the middle.

[0023] In the figure:

[0024] 1. Device box; 2. Solution tank; 3. Heating plate; 4. Grid plate; 5. Bracket; 6. Photovoltaic cell body; 7. Temperature sensor; 8. Light source lamp; 9. Humidity sensor; 10. Air supply main pipe; 1001. Air supply branch pipe; 1002. Air outlet; 11. Pallet; 12. Box door; 13. Handle; 14. Draft fan; 1401. Exhaust pipe; 1402. Air supply pipe; 15. Clamp seat; 16. Roller. DETAILED DESCRIPTION

[0025] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0026] like Figure 1-Figure 5As shown, in a preferred embodiment, the present invention discloses a photovoltaic cell acetic acid attenuation test simulation device, comprising: a device box 1, a solution tank 2 is arranged inside the device box 1, a heating plate 3 is arranged at the bottom of the solution tank 2, a bracket 5 is arranged at the top of the solution tank 2, and the bracket 5 is connected to the photovoltaic cell body 6. A light source lamp 8 is arranged at the top of the device box 1, and an air supply main pipe is arranged on the side wall of the device box 1, and the air supply main pipe is located below the light source lamp 8. One side of the air supply main pipe 10 is provided with air supply branches 1001 arranged at equal intervals, and an air outlet 1002 is arranged at the bottom end of the air supply branch pipe 1001. A box door 12 is installed on one side of the device box 1, and a handle 13 is installed on the outer end surface of the box door 12, and an induced draft fan 14 is arranged on the side of the device box 1 away from the box door 12.

[0027] A box door 12 is installed on the outer wall of one side of the device box body 1, and a handle 13 is installed on the outer wall of the box door 12. An induced draft fan 14 is arranged on the side of the device box body 1 away from the box door 12;

[0028] A temperature sensor 7 is installed on an inner wall at the top of the device box 1, and a humidity sensor 9 is installed on another inner wall at the top of the device box 1, which are used to monitor the temperature and humidity inside the device box 1;

[0029] A clamping plate 11 is fixed on both sides of the bottom of the grid plate 4, and the clamping plate 11 is tightly fitted with the solution tank 2, so as to facilitate positioning the grid plate 4 on the solution tank 2;

[0030] A clamping seat 15 is fixed on the inner wall of the bracket 5 at both ends of the photovoltaic cell body 6, and a roller 16 is installed inside the clamping seat 15, and one side of the roller 16 extends to the outside of the clamping seat 15 and fits tightly with the photovoltaic cell body 6, so as to facilitate the clamping of the photovoltaic cell body 6;

[0031] An exhaust pipe 1401 is installed at the input end of the induced draft fan 14, and one end of the exhaust pipe 1401 extends to the inside of the device box 1 and is connected to the solution tank 2, so as to extract part of the acetic acid gas in the solution tank 2;

[0032] The output end of the induced draft fan 14 is provided with a gas delivery pipe 1402, and one end of the gas delivery pipe 1402 extends into the interior of the device housing 1 and is connected to the main air supply pipe 10, so as to facilitate the delivery of acetic acid gas to the main air supply pipe 10;

[0033] The induced draft fan 14 is started to extract part of the acetic acid gas inside the solution tank 2 through the exhaust pipe 1401 and transport it to the air supply main pipe 10 through the air supply pipe 1402. The air supply main pipe 10 guides the acetic acid gas into the air supply branch pipe 1001. The acetic acid gas is discharged from the air outlet 1002 and moves from top to bottom to contact the photovoltaic cell body 6. This design allows the acetic acid gas to be evenly in contact with the lower and upper ends of the photovoltaic cell body 6. The acetic acid solution in the solution tank is heated by the heating plate, and the generated acetic acid gas rises and contacts with the photovoltaic cell body. The induced draft fan is started to extract part of the acetic acid gas in the solution tank through the exhaust pipe and transport it to the air supply main pipe through the air supply pipe. The air supply main pipe guides the acetic acid gas into the air supply branch pipe, and the acetic acid gas is discharged from the air outlet and moves from top to bottom to contact with the photovoltaic cell body. This design allows the acetic acid gas to contact with the lower end of the photovoltaic cell body. , and the upper end is evenly contacted, and the photovoltaic cell body is placed upright, so that the surface of the photovoltaic cell body can contact the light source and acetic acid gas, thereby improving the accuracy of detection; by providing a grid plate, a bracket, a clamp seat, and a roller, the photovoltaic cell body is placed upright in sequence inside the bracket at the top of the grid plate, and the two ends of the photovoltaic cell body are clamped between the clamp seats, the roller positions the photovoltaic cell body, and the roller is in rolling contact with the photovoltaic cell body, which not only facilitates the taking and placing of the photovoltaic cell body, but also prevents the wear of the photovoltaic cell body.

[0034] When this embodiment is in use: first, the photovoltaic cell body 6 is placed upright in sequence inside the bracket 5 at the top of the grid plate 4, and the two ends of the photovoltaic cell body 6 are clamped between the clamp seats 15. The roller 16 positions the photovoltaic cell body 6. The roller 16 and the photovoltaic cell body 6 are in rolling contact, which is not only convenient for taking and placing the photovoltaic cell body 6, but also prevents the wear of the photovoltaic cell body 6. Then, the light source lamp 8 irradiates and heats the photovoltaic cell body 6 to simulate sunlight irradiation. At the same time, the heating plate 3 heats the acetic acid solution inside the solution tank 2, and the generated acetic acid gas rises and contacts the photovoltaic cell body 6. The induced draft fan 14 is started to extract part of the acetic acid gas inside the solution tank 2 through the exhaust pipe 1401 and transport it to the air supply main pipe 10 through the air supply pipe 1402. The air supply main pipe 10 will Acetic acid gas is introduced into the air supply branch pipe 1001, and the acetic acid gas is discharged from the air outlet 1002 and moves from top to bottom to contact the photovoltaic cell body 6. This design allows the acetic acid gas to evenly contact the lower and upper ends of the photovoltaic cell body 6, and the photovoltaic cell body 6 is placed upright so that the surface of the photovoltaic cell body 6 can contact the light source and acetic acid gas, thereby improving the accuracy of detection. The temperature sensor 7 detects the temperature inside the device box 1, and the humidity sensor 9 detects the humidity inside the device box 1. Finally, pull the handle 13 to open the box door 12, lift the grid plate 4 to separate the card plate 11 from the solution tank 2, and then remove the grid plate 4 as a whole, so as to facilitate the removal of the photovoltaic cell body 6 from the device box 1, and then test the photovoltaic cell body 6 to determine its acid resistance.

[0035] In another embodiment, the present solution discloses a photovoltaic cell acetic acid attenuation test simulation device, including the following features: comprising a device box 1, wherein the device box 1 is provided with a cavity opening forward. The rear side of the device box 1 is provided with an opening, wherein the opening accommodates an air supply main pipe, and the air supply main pipe passes through the device box 1 to connect the inside and outside of the device box 1.

[0036] The bottom end face of the cavity inside the device housing 1 is provided with a fixedly connected solution tank 2, the bottom of the solution tank 2 is fixedly connected to the bottom end face of the cavity, and the opening of the solution tank 2 faces upward. A heating plate 3 is embedded at the bottom of the solution tank 2, and the heating plate 3 is located in the bottom of the solution tank 2, and the distance between the bottom face of the opening of the solution tank 2 and the heating plate 3 is less than the distance between the bottom face of the solution tank 2 and the heating plate 3. In other words, the heating plate 3 is embedded in the bottom of the solution tank 2 near the internal opening, so that the heating plate 3 transfers more heat upward to the solution tank 2 during the heating process, so that the heating efficiency of the solution in the solution tank 2 is higher, and the heating plate 3 can be prevented from transferring too much heat to the bottom of the device during the heating process, which ultimately not only improves the heating efficiency during the working process, but also makes the solution vaporization more efficient, and avoids the high temperature effect of long-term heating on the bottom of the device.

[0037] In another embodiment, in order to further improve the heating efficiency, the present solution sets a bracket 5 for vertically accommodating the photovoltaic cell body 6, and the clamping seats 15 for accommodating the photovoltaic cell body 6 are arranged at fixed intervals in the bracket 5. The clamping seats 15 are arranged in pairs, and every two clamping seats 15 form a pair, and each pair of clamping seats 15 are arranged at equal intervals at the edge of the bracket 5 and face the center of the bracket 5. The bracket 5 includes a square frame with a hollow middle, and each pair of clamping seats 15 is located at the inner edge of the square frame.

[0038] The distance between each pair of clamps 15 and any other adjacent pair of clamps 15 is greater than the distance between two clamps 15 in each pair of clamps 15. Each pair of clamps 15 is symmetrically arranged inside the square frame. The photovoltaic cell body 6 is fixed vertically through a simple and reliable structure, and the gas generated by the heating of the lower solution tank 2 is not blocked, while the gas generated by the heating of the lower solution tank 2 is minimized as much as possible. The efficiency of the gas generated by the heating of the lower solution tank 2 contacting the photovoltaic cell body 6 is improved. More gas generated by the heating of the lower solution tank 2 contacts the photovoltaic cell body 6 in a shorter time.

[0039] In other embodiments, in order to better clamp the photovoltaic cell body 6 and facilitate removal, and to avoid damage to the surface or interior of the photovoltaic cell body 6, a roller 16 is provided inside the clamp seat 15 in this solution. The roller 16 rolls in a cylindrical shape, and in each pair of clamp seats 15, two rollers 16 are arranged in parallel, and when working, the two rollers 16 rotate in opposite directions, and the outer edges of the two rollers 16 contact the front and back surfaces of the photovoltaic cell body 6 in the clamp seat 15, respectively, and when the photovoltaic cell body 6 moves in and out, the outer edges of the two rollers 16 roll on the front and back surfaces of the photovoltaic cell body 6, respectively, so that the movement of the photovoltaic cell body 6 is smoother, and the surface of the photovoltaic cell body 6 is prevented from generating large-area friction, thereby preventing damage.

[0040] The two ends of the roller 16 are rotatably connected to the clamp seat 15, the rotation center axis of the roller 16 is arranged vertically with the bracket 5, and the roller 16 is provided with a roller shaft. In one embodiment, the roller shaft is fixedly connected to the inner side of the clamp seat 15, so that the roller 16 rotates on the roller shaft, thereby playing a role in helping the photovoltaic cell body 6 to move. In other embodiments, the roller shaft is rotatably connected to the inner side of the clamp seat 15. At this time, the roller shaft and the roller 16 are fixedly connected, and the roller 16 and the roller shaft rotate together, thereby playing a role in helping the photovoltaic cell body 6 to move.

[0041] In other embodiments, the support is provided with a grid plate 4, in which evenly arranged grids are provided, and the size of the grid plate 4 is the same as that of the support. When the solution tank is heated, the acetic acid gas escapes from the top of the solution tank, and the acetic acid gas enters the grid plate 4 from the bottom end face of the grid plate 4, and is divided into several parts by the evenly arranged grids. Since the acetic acid gas that each grid can accommodate at the same time is limited, when the acetic acid gas flow rate is fixed, at the same time, the acetic acid gas is divided into several even parts by the grid, and finally escapes from the top of the grid plate 4, ensuring that the acetic acid gas reaching the photovoltaic cell body is even and stable. In addition, the photovoltaic cell body in the support is also evenly arranged relative to the grid plate 4, so that each photovoltaic cell body can obtain even acetic acid gas, and at the same time, a uniform acetic acid gas supply is ensured for multiple photovoltaic cell bodies during the test process.

[0042] In other embodiments, an air supply main pipe 10 is provided inside the device box and above the bracket. The air supply main pipe 10 inputs acetic acid gas from above the photovoltaic cell body. In order to uniformly provide the acetic acid gas above the photovoltaic cell body, the present solution is provided with air supply branch pipes 1001 arranged at equal intervals. The air supply branch pipes 1001 evenly divide the acetic acid gas in the air supply main pipe 10 and respectively provide the acetic acid gas above each photovoltaic cell body. On this basis, in the present solution, a strip-shaped air outlet 1002 is axially provided on the lower end face of the air supply branch pipe 1001, and the uniform output of the acetic acid gas is achieved through the strip-shaped air outlet 1002. The strip-shaped air outlet 1002 is parallel to the top of each photovoltaic cell body. This allows each photovoltaic cell body to receive uniform acetic acid gas in any direction at the top.

[0043] These modifications or improvements made on the basis of the present invention without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A photovoltaic cell acetic acid attenuation test simulation device, characterized in that: include: A device box, wherein the bottom surface of the device box is provided with a solution tank, a heating plate is embedded in the bottom of the solution tank, and a grid plate is provided on the top; A bracket is fixedly connected to the top of the grid plate, photovoltaic cells are vertically arranged at equal intervals inside the bracket, and an air supply main pipe corresponding to the bracket is provided on the side of the device box, and the air supply main pipe is connected to air supply branches corresponding to the photovoltaic cells.

2. The photovoltaic cell acetic acid attenuation test simulation device according to claim 1, characterized in that: The inner side walls of the device box are provided with temperature sensors and humidity sensors, and the temperature sensors and humidity sensors are arranged on the corresponding two side walls respectively.

3. A photovoltaic cell acetic acid attenuation test simulation device according to claim 1 or 2, characterized in that: A clamping plate is fixedly arranged on the bottom end surface of the grid plate, and the clamping plate is fitted with the solution tank; the grid plate is clamped with the side wall of the solution tank through the clamping plate.

4. A photovoltaic cell acetic acid attenuation test simulation device according to claim 1 or 2, characterized in that: The side of the bracket is provided with symmetrically arranged clamping seats, and the inside of the clamping seats is provided with rolling-matching rollers, and the surface of the rollers rolls on the outer surface of the photovoltaic cell body.

5. The photovoltaic cell acetic acid attenuation test simulation device according to claim 1, characterized in that: The device comprises an induced draft fan, wherein the induced draft fan is connected with an exhaust pipe, and the end of the exhaust pipe extends to the inside of the device box and is connected with the solution tank.

6. The photovoltaic cell acetic acid attenuation test simulation device according to claim 5, characterized in that: The induced draft fan is connected with an air supply pipe, the end of which extends to the interior of the device box and is connected with the air supply main pipe.

7. A photovoltaic cell acetic acid attenuation test simulation device according to claim 1 or 2 or 5 or 6, characterized in that: The air supply branch pipes include a plurality of air supply branch pipes arranged at equal distances, and an air outlet is provided on the side of each air supply branch pipe, and the air outlet extends along the axial direction of the air supply branch pipe.

8. A photovoltaic cell acetic acid attenuation test simulation device according to claim 1 or 2 or 5 or 6, characterized in that: A box door is arranged on the side of the device box body, and a handle is arranged on the outer end surface of the box door; the box door is rotatably connected to one side edge of the device box body.

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