Photovoltaic module temperature difference method layering equipment and use method

Abstract

The invention provides photovoltaic module temperature difference method layering equipment and a using method. The equipment comprises a rack, a feeding table, a heating and quenching cabin and a discharging table. The heating quenching cabin comprises an electric heating box, a hot air fan and a quenching agent nozzle; the feeding table and the discharging table are arranged at the two ends of the rack correspondingly. The heating and quenching cabin is arranged between the feeding table and the discharging table, and the feeding table and the discharging table partially extend into the heating and quenching cabin. The hot air fan is arranged at the bottom in the heating and quenching cabin; the electric heating box is arranged at the bottom of the heating and quenching cabin and is communicated with the bottom of the heating and quenching cabin through a pipeline; and the quenching agent nozzles are arranged at the top in the heating quenching cabin. According to different expansion coefficients of different materials such as glass, EVA (Ethylene Vinyl Acetate), a silicon battery piece and a back plate in the photovoltaic module, the photovoltaic module is rapidly cooled after being heated, so that the materials such as the glass, the EVA, the battery piece and the back plate are expanded and shrunk to different degrees to be mutually separated from adhesion, and the different materials are layered.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic module layering, and specifically relates to a photovoltaic module layering device and its usage method based on temperature difference. Background Technology

[0002] Photovoltaic modules have a lifespan of approximately 20-25 years. According to projections from the Renewable Energy Society regarding solar cell waste, solid waste from solar cells is expected to increase significantly after 2020, with the cumulative amount gradually rising. Statistics show that one ton of waste crystalline silicon photovoltaic modules contains 70% glass, 8% aluminum frames, 3.65% silicon photovoltaic cells, 0.53% aluminum internal conductors, 0.11% copper internal conductors, and 53g / t of silver, among other components. The recycling of waste photovoltaic modules is of great significance for environmental protection and resource recovery.

[0003] The common method for recycling waste photovoltaic (PV) modules is to collect them by category, and then separate them into different recycled products through layer separation and material sorting. The core of the recycling process is the layer separation of the modules. Currently, the layer separation of PV modules mainly involves physical crushing into small pieces, heat treatment to vaporize and decompose EVA, or chemical dissolution and swelling of EVA. Among these methods, the physical method, after crushing the materials of each layer of the module into small pieces, results in a mixture containing organic matter, silicon cells, solder ribbons, and other materials. The composition is relatively complex, which is not conducive to subsequent material sorting, and the recycled products have low purity and low recycling value.

[0004] The heat treatment process primarily utilizes the thermal decomposition characteristics of EVA in photovoltaic modules. High-temperature heating causes the EVA film to vaporize and evaporate, thereby removing the EVA and releasing the adhesion between the glass, silicon cells, and backsheet. This heat treatment process requires removing the photovoltaic module backsheet before heating; otherwise, at high temperatures, the fluorinated backsheet will produce large amounts of toxic and harmful gases, posing a threat to the environment and human health. Furthermore, the removal of the photovoltaic module backsheet can result in incomplete removal or damage to the silicon cells during the process.

[0005] Chemical solvent separation primarily involves soaking photovoltaic modules in organic solvents to dissolve EVA, thereby breaking the adhesion between the glass, silicon cells, and backsheet. This method requires large quantities of organic solvents, which pose secondary pollution problems after use, necessitating further treatment and hindering the economic benefits of module recycling. Furthermore, the dissolution and swelling process is lengthy, resulting in extremely low separation efficiency. Summary of the Invention

[0006] To address the aforementioned issues, this invention proposes a photovoltaic module temperature difference layering device, comprising a frame, a loading platform, a heating and cooling chamber, and a unloading platform; the heating and cooling chamber includes an electric heating box, a hot air fan, and a cooling agent nozzle.

[0007] The loading platform and unloading platform are respectively located at both ends of the frame;

[0008] The heating and cooling chamber is located between the loading platform and the unloading platform, with the loading platform and unloading platform extending into the heating and cooling chamber.

[0009] The hot air blower is located at the bottom of the heating and cooling chamber;

[0010] The electric heating box is located at the bottom of the heating and cooling chamber and is connected to the bottom of the heating and cooling chamber through a pipeline;

[0011] Multiple quenching agent nozzles are located at the top of the heating and quenching chamber.

[0012] Furthermore, the layering device also includes a feeding transmission device and a discharging transmission device;

[0013] The feeding transmission device is located below the feeding platform and is connected to the feeding platform for transmission.

[0014] The material feeding transmission device is located below the material feeding platform and is connected to the material feeding platform for transmission.

[0015] Furthermore, the loading platform includes a first drive shaft, a first roller, a first roller chain, a first belt conveyor, and a loading sensor;

[0016] Multiple first rollers are spaced apart within the first belt conveyor, and the rotation of the multiple first rollers drives the first belt conveyor to drive the transmission.

[0017] The first drive shaft is mounted on the outer first roller and is connected to the feeding drive device.

[0018] The first roller chain connects to the central shafts of multiple first rollers and cooperates with the central shafts of the first rollers to achieve chain drive;

[0019] The feeding sensor is mounted on the side baffle of the frame.

[0020] Furthermore, the unloading platform includes a second drive shaft, a second roller, a second roller chain, a second belt conveyor, and an unloading sensor;

[0021] Multiple second rollers are spaced apart within the second belt conveyor, and the rotation of the multiple second rollers drives the second belt conveyor to drive the transmission.

[0022] The second drive shaft is mounted on the outer second roller and is connected to the feeding drive device.

[0023] The second roller chain connects to the central shafts of multiple second rollers and cooperates with the central shafts of the second rollers to achieve chain drive;

[0024] The feeding sensor is installed on the side baffle of the frame.

[0025] Furthermore, the layering device also includes a PLC control system, which is electrically connected to the feeding sensor and the unloading sensor.

[0026] Furthermore, the heating and cooling chamber also includes a feed inlet, an insulation layer, a hot exhaust vent, a hot air circulation pipeline, a condensate discharge outlet, a discharge outlet, and a heating platform;

[0027] The feed inlet and discharge outlet are arranged opposite each other on both sides of the heating and cooling chamber. The feed inlet is located on the side closer to the loading platform, and the discharge outlet is located on the side closer to the unloading platform.

[0028] The insulation layer is disposed on the top of the heating and cooling chamber, and multiple cooling agent nozzles are embedded in the top insulation layer;

[0029] The bottom port of the hot air circulation pipe is connected to the pipe of the electric heating box, and the top port of the hot air circulation pipe is connected to the hot exhaust port.

[0030] The heating platform is positioned above the hot air blower;

[0031] The condensate discharge port is located on the side wall of the heating and quenching chamber and above the heating platform.

[0032] Furthermore, the heating and cooling chamber includes a first sealing plate and a second sealing plate, with the first sealing plate disposed at the inlet and the second sealing plate disposed at the outlet.

[0033] This application also relates to a method of using a photovoltaic module temperature difference stratification device, including the following steps:

[0034] Step S1: Place the retired photovoltaic modules with the backsheet facing up on the loading platform of the layering equipment.

[0035] Step S2: After the feeding sensor detects the presence of the photovoltaic module, it transmits the sensing data to the PLC control system. At the same time, the feeding transmission device is automatically started, the first sealing plate at the feed inlet is opened, and the first belt conveyor transports the photovoltaic module to the heating and cooling chamber. Then the first sealing plate is automatically closed.

[0036] Step S3: After the photovoltaic module enters the heating and cooling chamber, the electric heating box and hot air fan are started, and the hot exhaust vent is opened to heat the glass surface of the photovoltaic module. The heating temperature range is adjustable from 0 to 500℃, the heating time is adjustable from 0 to 50 minutes, and the photovoltaic module heating rate is greater than 10℃ / s.

[0037] Step S4: After heating is completed, the electric heating box, hot air blower, and hot exhaust vent will automatically shut off, and the shut-off time should be <1 second.

[0038] Step S5: Open the quenching agent nozzle and spray the quenching agent to rapidly cool the back panel of the photovoltaic module. The cooling temperature range is room temperature to -20℃, the cooling time should be less than 10s, and the cooling rate of the photovoltaic module should be greater than 100℃ / s.

[0039] Step S6: After the quenching is completed, the quenching agent nozzle is closed, the condensate drain port is opened, the second sealing plate is opened, and the photovoltaic module is transported to the outside of the heating and quenching chamber by the second belt conveyor. When the material sensor detects the material, it stops. At this time, the condensate in the heating and quenching chamber is discharged and the condensate drain port is closed.

[0040] Furthermore, in step S3, the heating temperature is 150°C and the heating time is 10 minutes.

[0041] Furthermore, in step S5, the quenching agent includes a liquid gas with a low boiling point.

[0042] Compared with the prior art, the beneficial effects of this application are as follows:

[0043] This application relates to a photovoltaic module temperature difference layering device. The device uses an electric heating box, a hot air fan, and a quenching agent nozzle, all housed within a heating and quenching chamber, to heat the photovoltaic module, followed by rapid cooling. Utilizing the different coefficients of thermal expansion of the various materials within the photovoltaic module, such as glass, EVA, silicon cells, and backsheet, the rapid cooling after heating causes these materials to expand and contract to varying degrees, causing them to separate and detach from each other, thus achieving layering of the different materials.

[0044] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 A schematic diagram of the layering device in an embodiment of the present invention is shown;

[0047] Figure 2 A schematic diagram of the heating and cooling chamber in an embodiment of the present invention is shown;

[0048] Figure 3 A schematic diagram of the loading platform in an embodiment of the present invention is shown;

[0049] Figure 4 A schematic diagram of the unloading platform in an embodiment of the present invention is shown.

[0050] In the diagram, 1-frame, 2-feeding platform, 21-first drive shaft, 22-first roller, 23-first roller chain, 24-first belt conveyor, 25-feeding sensor, 3-feeding transmission device, 4-heating and quenching chamber, 41-electric heating box, 42-hot air fan, 43-quenching agent nozzle, 44-feed inlet, 45-insulation layer, 46-hot exhaust vent, 47-hot air circulation pipeline, 48-condensate discharge port, 49-discharge port, 5-unloading platform, 51-second drive shaft, 52-second roller, 53-second roller chain, 54-second belt conveyor, 55-unloading sensor, 6-unloading transmission device, 7-PLC control system. Detailed Implementation

[0051] 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.

[0052] like Figure 1 , 2 As shown in Figures 3 and 4, a photovoltaic module temperature difference layering device includes a frame 1, a loading platform 2, a heating and cooling chamber 4, and a unloading platform 5; the heating and cooling chamber 4 includes an electric heating box 41, a hot air fan 42, and a cooling agent nozzle 43.

[0053] The loading platform 2 and the unloading platform 5 are respectively located at both ends of the frame 1;

[0054] The heating and cooling chamber 4 is located between the loading platform 2 and the unloading platform 5, with the loading platform 2 and the unloading platform 5 extending into the heating and cooling chamber 4.

[0055] The hot air blower 42 is located at the bottom of the heating and cooling chamber 4;

[0056] The electric heating box 41 is located at the bottom of the heating and cooling chamber 4 and is connected to the interior of the heating and cooling chamber 4 through a pipeline;

[0057] Multiple quenching agent nozzles 43 are disposed at the top of the heating quenching chamber 4.

[0058] The frame 1 consists of a lower support leg and a platform mounted on the support leg. The loading platform 2, the heating and cooling chamber 4, and the unloading platform 5 are all set on the platform of the frame 1. Baffles are set on the sides of the platforms of the loading platform 2 and the unloading platform 5 to prevent the photovoltaic modules from falling off during transportation on the loading platform 2 and the unloading platform 5.

[0059] The electric heating box 41 and the hot air fan 42 are used to heat the photovoltaic modules. The quenching agent nozzle 43 is connected to the condenser pipe. The refrigerant reaches the quenching agent nozzle 43 through the condenser pipe and is sprayed out from the quenching agent nozzle 43 to cool the photovoltaic modules.

[0060] The layering equipment also includes a feeding transmission device 3 and a discharging transmission device 6;

[0061] The feeding transmission device 3 is located below the feeding platform 2 and is connected to the feeding platform 2 in a transmission manner.

[0062] The feeding transmission device 6 is located below the feeding platform 5 and is connected to the feeding platform 5 for transmission.

[0063] The feeding transmission device 3 is equipped with a transmission shaft. The transmission shaft and the first transmission shaft 21 in the feeding platform 2 are connected by a chain to achieve transmission. When the transmission shaft rotates, it will drive the first transmission shaft 21 to rotate through the chain.

[0064] The feeding transmission device 6 is also equipped with a transmission shaft. The transmission shaft and the second transmission shaft 51 in the feeding table 5 are connected by a chain to achieve transmission. When the transmission shaft rotates, it will drive the second transmission shaft 51 to rotate through the chain.

[0065] The loading platform 2 includes a first drive shaft 21, a first roller 22, a first roller chain 23, a first belt conveyor 24, and a loading sensor 25;

[0066] Multiple first rollers 22 are spaced apart within the first belt conveyor 24, and the rotation of the multiple first rollers 22 drives the first belt conveyor 24 to drive the transmission.

[0067] The first drive shaft 21 is mounted on the outer first roller 22 and is connected to the feeding drive device 3.

[0068] The first roller chain 23 connects to the central shafts of multiple first rollers 22 and cooperates with the central shafts of the first rollers 22 to achieve chain drive;

[0069] The feeding sensor 25 is mounted on the side baffle of the frame 1.

[0070] Both the first roller chain 23 and the first belt conveyor 24 are made of high-temperature and cold-resistant materials, and are guaranteed to have a certain stability under large temperature differences.

[0071] The heating and cooling chamber (4) is made of high-temperature and cold-resistant materials and ensures a certain degree of stability under large temperature differences.

[0072] The feeding transmission device 3 drives the first transmission shaft 21 to rotate via a chain. The first transmission shaft 21 drives the first roller chain 23 to rotate, which in turn causes the multiple first rollers 22 that cooperate with it to rotate. Under the action of the multiple first rollers 22, the first belt conveyor device 24 also realizes the transmission function and realizes the transportation of photovoltaic modules. When the feeding sensor 25 senses the status of the photovoltaic modules, it will send a signal to the PLC control system 7, which will automatically control the equipment feeding and subsequent process.

[0073] The unloading platform 5 includes a second drive shaft 51, a second roller 52, a second roller chain 53, a second belt conveyor 54, and an unloading sensor 55;

[0074] Multiple second rollers 52 are spaced apart within the second belt conveyor 54, and the rotation of the multiple second rollers 52 drives the second belt conveyor 54 to drive the transmission.

[0075] The second drive shaft 51 is mounted on the outer second roller 52 and is connected to the unloading drive device 6.

[0076] The second roller chain 53 connects to the central shafts of multiple second rollers 52 and cooperates with the central shafts of the second rollers 52 to achieve chain drive;

[0077] The feeding sensor 55 is mounted on the side baffle of the frame 1.

[0078] The feeding transmission device 6 drives the second transmission shaft 51 to rotate via a chain. The second transmission shaft 51 drives the second roller chain 53 to rotate, which in turn causes the multiple second rollers 52 that cooperate with it to rotate. Under the action of the multiple second rollers 52, the second belt conveyor device 54 also realizes the transmission function and realizes the transportation of photovoltaic modules. The feeding sensor 54 senses the status of the photovoltaic modules and transmits a signal to the PLC control system 7, which will automatically control the equipment to discharge materials and subsequent processes.

[0079] The layering device also includes a PLC control system 7, which is electrically connected to the feeding sensor 25 and the unloading sensor 55.

[0080] The heating and cooling chamber 4 also includes a feed inlet 44, an insulation layer 45, a hot exhaust vent 46, a hot air circulation pipe 47, a condensate discharge outlet 48, a discharge outlet 49, and a heating platform. After the photovoltaic modules enter the heating and cooling chamber 4 through the loading platform 2, they are placed on the heating platform. The heating platform has good thermal conductivity. When heated by the hot air fan 42 located under the heating platform and the electric heating box 41 connected to the bottom of the heating and cooling chamber 4, the heat is conducted to the photovoltaic modules through the heating platform.

[0081] Since the photovoltaic module is in contact with the heating platform, the temperature is higher closer to the heating platform and lower farther away from the heating platform. In order to ensure that the photovoltaic module is heated evenly, the function of the hot air circulation pipe 47 is to send the heat under the heating platform to the photovoltaic module that is far away from the heating platform through the hot exhaust port 46 at the port of the hot air circulation pipe 47.

[0082] After heating is finished, quickly open the quenching nozzle 43 to cool. When the temperature changes, condensate will be generated. Therefore, it is necessary to open the condensate drain port 48 to drain the condensate to avoid affecting the cooling effect.

[0083] The feed inlet 44 and the discharge outlet 49 are arranged opposite to each other on both sides of the heating and cooling chamber 4. The feed inlet 44 is located on the side closer to the loading platform 2, and the discharge outlet 49 is located on the side closer to the unloading platform 5.

[0084] The insulation layer 45 is disposed on the top of the heating and cooling chamber 4, and a plurality of cooling agent nozzles 43 are embedded in the top insulation layer 45; the condenser pipe connected to the cooling agent nozzles 43 is disposed in the space between the top of the heating and cooling chamber 4 and the insulation layer 45, and the refrigerant in the condenser pipe is sprayed out through the cooling agent nozzles 43 to cool the photovoltaic module.

[0085] The bottom port of the hot air circulation pipe 47 is connected to the pipe of the electric heating box 41, and the top port of the hot air circulation pipe 47 is connected to the hot exhaust port 46.

[0086] The heating platform is positioned above the hot air blower 42;

[0087] The condensate discharge port 48 is located on the side wall of the heating and cooling chamber 4 and above the heating platform.

[0088] The heating and cooling chamber 4 includes a first sealing plate and a second sealing plate. The first sealing plate is located at the feed inlet 44, and the second sealing plate is located at the discharge outlet 49.

[0089] The first sealing plate and the second sealing plate are used to isolate the outside world from the heating and cooling chamber (4). The first sealing plate is made of high temperature and cold resistant materials and ensures a certain stability under large temperature difference.

[0090] This application also relates to a method of using a photovoltaic module temperature difference stratification device, including the following steps:

[0091] Step S1: Place the retired photovoltaic modules with the back panel facing up on the loading platform 2 of the layering equipment.

[0092] In step S2, after the feeding sensor 25 senses the presence of the photovoltaic module, it transmits the sensing data to the PLC control system 7. At the same time, the feeding transmission device 3 is automatically started, the first sealing plate at the feed port 44 is opened, and the first belt conveyor 24 transports the photovoltaic module to the heating and cooling chamber 4. Then the first sealing plate is automatically closed.

[0093] Step S3: After the photovoltaic module enters the heating and cooling chamber 4, the electric heating box 41 and the hot air fan 42 are started, and the hot exhaust port 46 is opened to heat the glass surface of the photovoltaic module. The heating temperature range is adjustable from 0 to 500℃, the heating time is adjustable from 0 to 50 minutes, and the photovoltaic module heating rate is greater than 10℃ / s.

[0094] Step S4: After heating is completed, the electric heating box 41, hot air fan 42, and hot exhaust vent 46 will automatically shut down. The shut-off time should be <1 second.

[0095] Step S5: The quenching agent nozzle 43 and the condensate discharge port 48 are opened to spray the quenching agent to rapidly cool the back panel of the photovoltaic module. The cooling temperature range is room temperature to -20℃, the cooling time should be less than 10s, and the cooling rate of the photovoltaic module is greater than 100℃ / s.

[0096] Step S6: After the rapid cooling is completed, the rapid cooling agent nozzle 43 is closed, the second sealing plate is opened, and the photovoltaic module is transported to the outside of the heating and rapid cooling chamber 4 by the second belt conveyor 54. The process stops when the material sensor 55 senses the material.

[0097] In step S3, the heating temperature is 150°C and the heating time is 10 minutes.

[0098] In step S5, the quenching agent includes a liquid gas with a low boiling point.

[0099] Liquid gases with low boiling points include liquid nitrogen.

[0100] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic module temperature difference layering device, comprising a frame (1), characterized in that: It also includes a loading platform (2), a heating and cooling chamber (4) and a unloading platform (5); the heating and cooling chamber (4) includes an electric heating box (41), a hot air blower (42) and a cooling agent nozzle (43); The loading platform (2) and unloading platform (5) are respectively located at both ends of the frame (1); The heating and cooling chamber (4) is located between the loading platform (2) and the unloading platform (5), and the loading platform (2) and the unloading platform (5) extend into the heating and cooling chamber (4); The hot air blower (42) is located at the bottom of the heating and cooling chamber (4); The electric heating box (41) is located at the bottom of the heating and cooling chamber (4) and is connected to the bottom of the heating and cooling chamber (4) through a pipeline; Multiple quenching agent nozzles (43) are disposed at the top of the heating quenching chamber (4).

2. The photovoltaic module temperature difference method stratification device according to claim 1, characterized in that: The layering equipment also includes a feeding transmission device (3) and a discharging transmission device (6); The feeding transmission device (3) is located below the feeding platform (2) and is connected to the feeding platform (2) in a transmission manner; The feeding transmission device (6) is located below the feeding platform (5) and is connected to the feeding platform (5) for transmission.

3. The photovoltaic module temperature difference method stratification device according to claim 2, characterized in that: The loading platform (2) includes a first drive shaft (21), a first roller (22), a first roller chain (23), a first belt conveyor (24), and a loading sensor (25); Multiple first rollers (22) are spaced apart inside the first belt conveyor (24), and the rotation of the multiple first rollers (22) drives the first belt conveyor (24) to drive the transmission. The first drive shaft (21) is mounted on the outer first roller (22) and is connected to the feeding drive device (3) for transmission. The first roller chain (23) connects to the central shafts of multiple first rollers (22) and cooperates with the central shafts of the first rollers (22) to achieve chain drive; The feeding sensor (25) is installed on the side baffle of the frame (1).

4. The photovoltaic module temperature difference method stratification device according to claim 3, characterized in that: The unloading platform (5) includes a second drive shaft (51), a second roller (52), a second roller chain (53), a second belt conveyor (54), and an unloading sensor (55); Multiple second rollers (52) are spaced apart inside the second belt conveyor (54), and the rotation of the multiple second rollers (52) drives the second belt conveyor (54) to drive the transmission. The second drive shaft (51) is mounted on the outer second roller (52) and is connected to the feeding drive device (6) for transmission. The second roller chain (53) connects to the central shafts of multiple second rollers (52) and cooperates with the central shafts of the second rollers (52) to achieve chain drive; The feeding sensor (55) is installed on the side baffle of the frame (1).

5. The photovoltaic module temperature difference method stratification device according to claim 4, characterized in that: The layering device also includes a PLC control system (7), which is electrically connected to the feeding sensor (25) and the unloading sensor (55).

6. The photovoltaic module temperature difference method stratification device according to claim 5, characterized in that: The heating and cooling chamber (4) also includes a feed inlet (44), an insulation layer (45), a hot exhaust vent (46), a hot air circulation pipeline (47), a condensate discharge outlet (48), a discharge outlet (49), and a heating platform; The feed inlet (44) and the discharge outlet (49) are arranged opposite to each other on both sides of the heating and cooling chamber (4). The feed inlet (44) is located on the side closer to the loading platform (2), and the discharge outlet (49) is located on the side closer to the unloading platform (5). The insulation layer (45) is disposed on the top of the heating and cooling chamber (4), and a plurality of cooling agent nozzles (43) are embedded in the top insulation layer (45); The bottom port of the hot air circulation pipe (47) is connected to the pipe of the electric heating box (41), and the top port of the hot air circulation pipe (47) is connected to the hot exhaust port (46). The heating platform is positioned above the hot air blower (42); The condensate discharge port (48) is located on the side wall of the heating and cooling chamber (4) and above the heating platform.

7. The photovoltaic module temperature difference method stratification device according to claim 6, characterized in that: The heating and cooling chamber (4) includes a first sealing plate and a second sealing plate. The first sealing plate is located at the feed inlet (44), and the second sealing plate is located at the discharge outlet (49).

8. A method of using a photovoltaic module temperature difference method stratification device according to any one of claims 1-7, characterized in that: Includes the following steps: Step S1: Place the retired photovoltaic module with the back panel facing up on the loading platform (2) of the layering equipment; Step S2: After the feeding sensor (25) senses the presence of the photovoltaic module, it transmits the sensing data to the PLC control system (7) and starts the feeding transmission device (3). The first sealing plate at the feed inlet (44) opens, and the first belt conveyor (24) transports the photovoltaic module to the heating and cooling chamber (4). Then the first sealing plate closes automatically. Step S3: After the photovoltaic module enters the heating and cooling chamber (4), the electric heating box (41) and hot air blower (42) are started, and the hot exhaust port (46) is opened to heat the glass surface of the photovoltaic module. The heating temperature range is adjustable from 0 to 500℃, the heating time is adjustable from 0 to 50 minutes, and the photovoltaic module heating rate is greater than 10℃ / s. Step S4: After heating is completed, the electric heating box (41), hot air blower (42), and hot exhaust vent (46) will automatically shut down. The shut-off time should be <1s. Step S5, the quenching agent nozzle (43) is opened, and the quenching agent is sprayed to rapidly cool the back panel of the photovoltaic module. The cooling temperature range is room temperature to -20℃, the cooling time should be less than 10s, and the cooling rate of the photovoltaic module is greater than 100℃ / s. Step S6: After the rapid cooling is completed, the rapid cooling agent nozzle (43) is closed, and the condensate discharge port (48) is opened. The second sealing plate is opened, and the photovoltaic module is transported to the outside of the heating and rapid cooling chamber (4) by the second belt conveyor (54). When the material sensor (55) senses the material, it stops. At this time, the condensate in the heating and rapid cooling chamber (4) is discharged and the condensate discharge port (48) is closed.

9. The method of using the photovoltaic module temperature difference method stratification device according to claim 8, characterized in that: In step S3, the heating temperature is 150°C and the heating time is 10 minutes.

10. The method of using the photovoltaic module temperature difference method stratification device according to claim 8, characterized in that: In step S5, the quenching agent includes a liquid gas with a low boiling point.

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