Photovoltaic cell oxidation equipment and oxidation process

Abstract

The present invention belongs to the technical field of photovoltaic cell processing, and specifically is a photovoltaic cell oxidation device and oxidation process, comprising an oxidation box, a fixed disk is arranged above the oxidation box, a high-temperature heating plate is installed at the bottom end of the oxidation box, an oxygen injection component is installed on one side of the oxidation box, a flip component for multi-station switching is arranged outside the fixed disk, and a flushing component for cleaning is arranged on the side of the oxidation box away from the oxygen injection component; by arranging multiple groups of fixed disks, it is convenient to oxidize multiple groups of photovoltaic cells at the same time, and when installing, the fixed disk is driven to flip by a flip frame, so that the photovoltaic cells can be installed in different stations, and after cleaning, the fixed disk enters the interior of the oxidation box, and the fixed disk is driven to flip by the flip frame to dry the photovoltaic cell and preheat it at the same time. When oxidizing the photovoltaic cell, the fixed disk can be driven to flip and switch stations by the flip frame, and the oxidation efficiency can be improved by arranging a multi-station fixed disk.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic cell processing, and specifically relates to a photovoltaic cell oxidation device and an oxidation process. Background Art

[0002] Photovoltaic cells are a type of semiconductor wafer made of silicon wafers. During the production process, the surface of photovoltaic cells needs to be oxidized. Through the oxidation process, a layer of oxide film can be formed on the surface of the photovoltaic cell. The oxide film can protect the surface of the photovoltaic cell and prevent the surface of the photovoltaic cell from being contaminated during use, which may affect its use.

[0003] During the production process, dirt may adhere to the surface of photovoltaic cells. The dirt will block the surface of the photovoltaic cells during the oxidation process, affecting the oxidation effect in the blocked area, resulting in the stability of the photovoltaic cells during use. In addition, it will take a long time to heat the photovoltaic cells during the oxidation process, and the processing efficiency will be low.

[0004] To this end, the present invention provides a photovoltaic cell oxidation device and an oxidation process. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the photovoltaic cell oxidation equipment described in the present invention includes an oxidation box, a fixed disk is arranged above the oxidation box, a high-temperature heating plate is installed at the bottom end of the oxidation box, an oxygen injection component is installed on one side of the oxidation box, a temperature sensor is installed at the top of the oxidation box, an oxygen concentration sensor is arranged on one side of the temperature sensor, the oxygen concentration sensor is installed at the top of the oxidation box, an exhaust hole is provided on the side of the oxygen concentration sensor away from the temperature sensor, a turntable is arranged below the exhaust hole, an air outlet is provided inside the turntable, a first motor is installed on the top of the oxidation box, the end of the rotating shaft of the first motor is fixedly connected to the top of the turntable, a flip component for multi-station switching is arranged on the outside of the fixed disk, and a flushing component for cleaning is arranged on the side of the oxidation box away from the oxygen injection component.

[0007] Preferably, the turnover assembly comprises side support rollers rotatably connected to both sides of the interior of the fixed plate, and a bottom support roller is rotatably connected to the lower part of the interior of the fixed plate.

[0008] Preferably, a baffle is hinged on one side of the fixed disk, coil springs are fixed outside the rotating shafts on both sides of the baffle, flip holes matching the outer diameter of the coil springs are opened on both sides of the interior of the fixed disk, and the outer side of the coil spring is fixedly connected to the inner side of the flip hole of the fixed disk.

[0009] Preferably, six groups of fixed disks are provided, and a flip frame is fixed between the six groups of fixed disks, the fixed disks are evenly distributed outside the flip frame, a cover plate is provided above the flip frame, both ends of the flip frame are rotatably connected with connecting frames, the top of the connecting frame is fixedly connected to the cover plate, a transmission disk is fixed at one end of the flip frame, a second motor is installed at the top of the cover plate, an output disk is fixed to the end of the rotating shaft of the second motor, a metal chain is sleeved on the outside of the transmission disk and the output disk of the second motor, the metal chain is composed of a metal rope and a plurality of metal spheres, and the plurality of metal spheres are evenly fixed on the outside of the metal rope.

[0010] Preferably, an inlet and outlet are provided at the top of the oxidation box, and first support frames are provided at both ends of the inlet and outlet, and the bottom end of the first support frame is fixedly connected to the top of the oxidation box, a third motor is installed at the top of one of the first support frames, a first threaded rod is fixed to the end of the rotating shaft of the third motor, and a guide slide rod is fixed inside the other first support frame, a first lifting block is fixed to the end of the cover plate close to the third motor, the first lifting block is threadedly connected to the first threaded rod, and a guide block is fixed to the end of the cover plate away from the third motor, and the guide block is sleeved on the outside of the guide slide rod.

[0011] Preferably, the outer diameter of the bottom end of the cover plate matches the inner diameter of the inlet and outlet.

[0012] Preferably, the flushing assembly includes a water tank fixed on the side of the oxidation tank away from the oxygen injection assembly, a water pump is installed on the top of the water tank, a water pump pipe is fixed to the water inlet end of the water tank, the water pump pipe is connected to the interior of the water tank, a water outlet pipe is fixed to the water outlet end of the water pump, and a water spray rack is fixed to the end of the water outlet pipe away from the water pump.

[0013] Preferably, the water spray rack is composed of a plurality of pipe bodies, and a plurality of spray heads are fixed at equal intervals on the top of the water spray rack.

[0014] Preferably, a water receiving trough is provided above the oxidation box, a mesh plate is fixed inside the water receiving trough, movable blocks are fixed on both sides of the water receiving trough, the internal threads of the movable blocks are connected with a second threaded rod, two groups of second support frames are fixed on the side of the top of the oxidation box away from the oxygen injection assembly, a fourth motor is installed on the side of the second support frame away from the second threaded rod, the end of the rotating shaft of the fourth motor is fixedly connected to one end of the second threaded rod, and the other end of the second threaded rod is rotatably connected to the top of the oxidation box through a support block.

[0015] The present invention provides the following photovoltaic cell oxidation process, comprising:

[0016] Silicon wafer cleaning: Clean the surface of photovoltaic cells by flushing the components to remove pollutants such as metal impurities, organic matter and oxides attached to the surface;

[0017] Wafer drying: The cleaned photovoltaic cells are dried by the heat of the high-temperature heating plate to remove the residual moisture on the surface of the photovoltaic cells after rinsing;

[0018] Pretreatment: preheat the photovoltaic cells, increase the temperature of the photovoltaic cells, and reduce the heating time during the oxidation process

[0019] Oxidation process: The cleaned photovoltaic cells are placed in an oxidation box. Under high temperature and oxygen reaction, a dense silicon dioxide oxide film is formed on the surface of the photovoltaic cells.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The photovoltaic cell oxidation equipment described in the present invention can facilitate the oxidation of multiple groups of photovoltaic cells at the same time by setting multiple groups of fixed disks. During installation, the fixed disk can be driven to flip by the flip frame to facilitate the installation of the photovoltaic cells in different stations. After cleaning, the fixed disk enters the interior of the oxidation box. The fixed disk can be driven to flip by the flip frame to dry and preheat the photovoltaic cells at the same time. When oxidizing the photovoltaic cells, the fixed disk can be driven to flip and switch stations by the flip frame, and the oxidation efficiency can be improved by setting a multi-station fixed disk.

[0022] 2. The photovoltaic cell oxidation equipment described in the present invention can clean the dirt on the surface of the photovoltaic cell by spraying water mist through a water spray rack, and at the same time, the flushing water flow can be recovered through a water receiving trough, and the mesh plate can filter out the dirt in the water. The recovered water can be returned to the inside of the water tank through a recovery pipe, so that the water inside the water tank can be recycled. The fourth motor drives the water receiving trough to move and can be removed from under the fixed plate after the water spray rack completes flushing, so as to prevent the water receiving trough from affecting the lifting and lowering of the fixed plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 is a stereogram of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0026] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0027] Figure 4 It is a schematic diagram of the fixed disk structure in the present invention;

[0028] Figure 5It is a schematic diagram of a partial cross-sectional structure of a fixed disk in the present invention;

[0029] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0030] Figure 7 It is a schematic diagram of the water tank structure in the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the water spray rack in the present invention;

[0032] Fig. 9 It is a schematic diagram of the water receiving trough structure in the present invention.

[0033] In the figure: 1, oxidation box; 11, inlet and outlet; 12, temperature sensor; 13, oxygen concentration sensor; 14, exhaust hole; 141, turntable; 142, exhaust hole; 143, first motor; 2, fixed plate; 21, flip frame; 211, transmission plate; 212, metal chain; 22, second motor; 23, cover plate; 231, first lifting block; 232, guide block; 233, connecting frame; 24, third motor; 241, first support frame; 242, first Threaded rod; 243, guide slide rod; 25, side support roller; 251, bottom support roller; 252, baffle; 253, coil spring; 3, high-temperature heating plate; 4, oxygen injection assembly; 5, water tank; 51, water pump; 511, water outlet pipe; 512, water suction pipe; 52, water spray rack; 521, nozzle; 53, water receiving trough; 531, moving block; 532, mesh plate; 533, recovery pipe; 54, fourth motor; 541, second threaded rod; 542, second support rack. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] like Figures 1 to 3As shown, a photovoltaic cell oxidation device described in an embodiment of the present invention comprises an oxidation box 1, a fixed disk 2 is arranged above the oxidation box 1, a high-temperature heating plate 3 is installed at the bottom end of the oxidation box 1, an oxygen injection component 4 is installed on one side of the oxidation box 1, a temperature sensor 12 is installed at the top of the oxidation box 1, an oxygen concentration sensor 13 is arranged on one side of the temperature sensor 12, the oxygen concentration sensor 13 is installed at the top of the oxidation box 1, an exhaust hole 14 is provided on the side of the oxygen concentration sensor 13 away from the temperature sensor 12, a turntable 141 is arranged below the exhaust hole 14, an air outlet 142 is provided inside the turntable 141, a first motor 143 is installed on the top of the oxidation box 1, the end of the rotating shaft of the first motor 143 is fixedly connected to the top of the turntable 141, a flip component for multi-station switching is arranged on the outside of the fixed disk 2, and a flushing component for cleaning is arranged on the side of the oxidation box 1 away from the oxygen injection component 4;

[0036] In order to make photovoltaic cells more durable during production, their surfaces need to be oxidized. The formed oxide layer can protect the photovoltaic cells. During oxidation, the photovoltaic cells are placed inside the fixed disk 2, and the surface of the photovoltaic cells is cleaned by the flushing component. Then, the fixed disk 2 can be placed inside the oxidation box 1 by the flipping component. At this time, oxygen is input into the oxidation box 1 through the oxygen injection component 4. During the oxygen supply process, the first motor 143 is started to drive the turntable 141 to rotate so that the air outlet 142 is aligned with the exhaust hole 14. At this time, the gas inside the oxidation box 1 is squeezed out from the inside of the air outlet 142 and the exhaust hole 14 by the input oxygen. The oxygen concentration inside the oxidation box 1 is monitored in real time by the oxygen concentration sensor 13. After the set oxygen concentration is reached, the oxygen injection component 4 stops supplying oxygen, and the first motor 143 drives the turntable 141 to rotate to separate the air outlet 142 from the exhaust hole 14. Then the high-temperature heating plate 3 is powered on to generate heat, and the heat generated by the high-temperature heating plate 3 can pre-heat the photovoltaic cells inside the fixed disk 2. At the same time, the flip component drives the fixed disk 2 to flip continuously, and the moisture on the surface of the photovoltaic cells inside the fixed disk 2 is evaporated by heating. Then the rotation of the fixed disk 2 is stopped, so that one of the fixed disks 2 faces the high-temperature heating plate 3, and the high-temperature heating plate 3 bakes the photovoltaic cells inside the current fixed disk 2 to oxidize them. The temperature sensor 12 can monitor the temperature inside the oxidation box 1 in real time, and the oxygen concentration sensor 13 monitors the oxygen consumption inside the oxidation box 1. When there is a lack of oxygen, the oxygen injection component 4 is provided to supplement oxygen in time. An oxide layer can be generated on the surface of the photovoltaic cells inside the fixed disk 2 by baking with oxygen and the high-temperature heating plate 3, and then the photovoltaic cells inside other fixed disks 2 are switched to be oxidized by the flip component. After the oxidation is completed, the photovoltaic cells inside the fixed disk 2 can be taken out.

[0037] like Figures 4 to 5As shown, the flip assembly includes side support rollers 25 rotatably connected to both sides of the interior of the fixed plate 2, and a bottom support roller 251 rotatably connected to the lower part of the interior of the fixed plate 2;

[0038] When fixing the photovoltaic cell panel, the photovoltaic cell panel is inserted from the opening on one side of the fixing plate 2. At this time, the side support rollers 25 can guide the photovoltaic cell piece, and the bottom support rollers 251 can support the bottom of the photovoltaic cell piece. Due to the rotation direction restriction of the side support rollers 25, the photovoltaic cell piece inside the fixing plate 2 can only move left and right, which can prevent the photovoltaic cell piece inside the fixing plate 2 from falling off during the flipping process.

[0039] like Figures 4 to 6 As shown, a baffle 252 is hinged on one side of the fixed disk 2, and coil springs 253 are fixed to the outside of the rotating shafts on both sides of the baffle 252. Flip holes matching the outer diameter of the coil spring 253 are opened on both sides of the interior of the fixed disk 2, and the outer side of the coil spring 253 is fixedly connected to the inner side of the flip hole of the fixed disk 2;

[0040] The baffle 252 is flipped inside the opening of the fixed disk 2. When the photovoltaic cell is placed into the fixed disk 2, the baffle 252 is flipped parallel to the fixed disk 2. After the photovoltaic cell is placed into the fixed disk 2, the baffle 252 is released. At this time, the coil spring 253 can drive the baffle 252 to automatically reset. During the flipping process, the elastic force of the coil spring 253 can support the baffle 252 to keep it in a stable state, thereby preventing the photovoltaic cell from falling off from the inside of the fixed disk 2 during the flipping process.

[0041] like Figures 4 to 5 As shown, six groups of fixed disks 2 are provided, and a turning frame 21 is fixed between the six groups of fixed disks 2. The fixed disks 2 are evenly spaced outside the turning frame 21. A cover plate 23 is provided above the turning frame 21. Both ends of the turning frame 21 are rotatably connected with a connecting frame 233. The top of the connecting frame 233 is fixedly connected to the cover plate 23. A transmission disk 211 is fixed at one end of the turning frame 21. A second motor 22 is installed at the top of the cover plate 23. An output disk is fixed to the end of the rotating shaft of the second motor 22. A metal chain 212 is sleeved on the outside of the transmission disk 211 and the output disk of the second motor 22. The metal chain 212 is composed of a metal rope and a plurality of metal balls. The plurality of metal balls are evenly spaced and fixed on the outside of the metal rope.

[0042] When in use, the photovoltaic cell is installed inside the fixed disk 2. After one installation is completed, the second motor 22 is started to drive the transmission disk 211 to rotate through the metal chain 212, and the transmission disk 211 drives the flip frame 21 to flip, and the flip frame 21 drives the fixed disk 2 to flip. The fixed disk 2 at different stations can be switched by flipping. After switching, the photovoltaic cells are installed inside the fixed disk 2 at other stations. When the fixed disk 2 is placed inside the oxidation box 1, the fixed disk 2 is driven to flip by the flip frame 21, so that the high-temperature heating plate 3 can rotate when drying the photovoltaic cells inside the fixed disk 2, which can make the photovoltaic cells more evenly dried and at the same time preheat the photovoltaic cells to reduce the subsequent heating time. After oxidation, the station of the fixed disk 2 can be switched, so that the photovoltaic cells at other stations can be oxidized quickly and conveniently. The metal chain 212 is set so that the high temperature state inside the oxidation box 1 will not be affected by the flipping of the flip frame 21.

[0043] like Figures 4 to 5 As shown, an inlet and outlet 11 is provided at the top of the oxidation box 1, and first support frames 241 are provided at both ends of the inlet and outlet 11. The bottom end of the first support frame 241 is fixedly connected to the top of the oxidation box 1, and a third motor 24 is installed at the top of one of the first support frames 241. A first threaded rod 242 is fixed to the end of the rotating shaft of the third motor 24, and a guide slide bar 243 is fixed inside the other first support frame 241. A first lifting block 231 is fixed to one end of the cover plate 23 close to the third motor 24, and the first lifting block 231 is threadedly connected to the first threaded rod 242. A guide block 232 is fixed to one end of the cover plate 23 away from the third motor 24, and the guide block 232 is sleeved on the outside of the guide slide bar 243.

[0044] After all the photovoltaic cells are installed inside the fixed plate 2, the third motor 24 is started to drive the first threaded rod 242 to rotate, and the first threaded rod 242 drives the first lifting block 231 to move downward. At this time, the first lifting block 231 drives the cover plate 23, and the cover plate 23 simultaneously drives the fixed plate 2 to extend into the interior of the oxidation box 1. During the descending process of the cover plate 23, the guide block 232 slides on the outside of the guide slide rod 243 to support the other end of the cover plate 23. When the photovoltaic cells inside the fixed plate 2 are oxidized, the third motor 24 is started to rotate in the opposite direction to make the fixed plate 2 rise from the inside of the oxidation box 1.

[0045] like Figures 1 to 4 As shown, the outer diameter of the bottom end of the cover plate 23 matches the inner diameter of the inlet and outlet 11;

[0046] When the fixed plate 2 descends, the cover plate 23 will descend together with the fixed plate 2. After the fixed plate 2 enters the interior of the oxidation box 1, the cover plate 23 covers the top of the inlet and outlet 11, and the bottom end of the cover plate 23 is inserted into the interior of the inlet and outlet 11, which can achieve a certain degree of sealing for the inlet and outlet 11, thereby preventing external air from entering the interior of the oxidation box 1 during use and affecting the oxidation of the photovoltaic cells, and reducing the leakage of oxygen from the inside of the oxidation box 1 to the outside.

[0047] like Figures 1 to 9 As shown, the flushing assembly includes a water tank 5 fixed to the side of the oxidation tank 1 away from the oxygen injection assembly 4, a water pump 51 is installed on the top of the water tank 5, a water pumping pipe 512 is fixed to the water inlet end of the water tank 5, the water pumping pipe 512 is connected to the inside of the water tank 5, a water outlet pipe 511 is fixed to the water outlet end of the water pump 51, and a water spraying frame 52 is fixed to the end of the water outlet pipe 511 away from the water pump 51;

[0048] Before oxidizing the photovoltaic cells, their surface needs to be rinsed. At this time, the water pump 51 is started to extract water from the water tank 5 through the suction pipe 512. The water pump 51 then transports the water to the inside of the water spray rack 52 through the outlet pipe 511. The surface of the photovoltaic cells can be rinsed through the water spray rack 52. During the rinsing process, the turning rack 21 is used to drive the fixed plate 2 to turn over, so that the photovoltaic cells at different stations can be cleaned.

[0049] like Figures 1 to 9 As shown, the water spray frame 52 is composed of a plurality of pipes, and a plurality of spray heads 521 are fixed at equal intervals on the top of the water spray frame 52;

[0050] When washing the surface of the photovoltaic cell, water is input into the interior of the water spray rack 52 through the water outlet pipe 511, and the water is sprayed out through the nozzle 521. The water mist sprayed by multiple nozzles 521 can cover the surface of the photovoltaic cell, so that the photovoltaic cell can be cleaned more quickly.

[0051] like Figures 1 to 9 As shown, a water receiving trough 53 is arranged above the oxidation box 1, a mesh plate 532 is fixed inside the water receiving trough 53, moving blocks 531 are fixed on both sides of the water receiving trough 53, the inner thread of the moving block 531 is connected with a second threaded rod 541, two sets of second support frames 542 are fixed on the side of the top of the oxidation box 1 away from the oxygen injection assembly 4, a fourth motor 54 is installed on the side of the second support frame 542 away from the second threaded rod 541, the end of the rotating shaft of the fourth motor 54 is fixedly connected to one end of the second threaded rod 541, and the other end of the second threaded rod 541 is rotatably connected to the top of the oxidation box 1 through the support block;

[0052] During the process of cleaning the photovoltaic cells by the water spray rack 52, the dirt on the surface of the photovoltaic cells is washed off by water mist. At this time, the water receiving trough 53 can store the water and dirt flowing down from the surface of the photovoltaic cells. At this time, the dirt and the water flow can be separated by the mesh plate 532. When used inside the water tank 5, it is in a sealed state. When the water pump 51 pumps water through the suction pipe 512, negative pressure will be generated inside the water tank 5. Therefore, the water tank 5 will suck the filtered water flow inside the water receiving trough 53 into its interior through the recovery pipe 533, so that the flushing water flow can be recycled. When cleaning the photovoltaic cells inside the fixed disk 2, starting the fourth motor 54 to drive the second threaded rod 541 to rotate can make the moving block 531 drive the water receiving trough 53 to move. The water receiving trough 53 moves to the bottom of the fixed disk 2 to start cleaning. After cleaning, starting the fourth motor 54 to rotate in the opposite direction can move the water receiving trough 53 away from the bottom of the fixed disk 2, which can prevent the high-temperature heating plate 3 from affecting the use of the fixed disk 2.

[0053] A one-piece forming process for hardware die-casting parts, comprising:

[0054] Silicon wafer cleaning: Clean the surface of photovoltaic cells by flushing the components to remove pollutants such as metal impurities, organic matter and oxides attached to the surface;

[0055] Wafer drying: The cleaned photovoltaic cell is dried by the heat of the high-temperature heating plate 3 to remove the residual moisture on the surface of the photovoltaic cell after washing;

[0056] Pretreatment: preheat the photovoltaic cells, increase the temperature of the photovoltaic cells, and reduce the heating time during the oxidation process

[0057] Oxidation process: The cleaned photovoltaic cell is placed in the oxidation box 1, and reacts with oxygen at high temperature to form a dense silicon dioxide oxide film on the surface of the photovoltaic cell.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A photovoltaic cell oxidation device, characterized in that: The invention comprises an oxidation box (1), wherein a fixing plate (2) is arranged above the oxidation box (1), a high-temperature heating plate (3) is installed at the bottom of the oxidation box (1), an oxygen injection assembly (4) is installed on one side of the oxidation box (1), a temperature sensor (12) is installed at the top of the oxidation box (1), an oxygen concentration sensor (13) is arranged on one side of the temperature sensor (12), the oxygen concentration sensor (13) is installed at the top of the oxidation box (1), and the oxygen concentration sensor (13) is away from the temperature sensor (1). An exhaust hole (14) is provided on one side of the fixed plate (2), a rotating disk (141) is provided below the exhaust hole (14), an exhaust hole (142) is provided inside the rotating disk (141), a first motor (143) is installed at the top of the oxidation box (1), the end of the rotating shaft of the first motor (143) is fixedly connected to the top of the rotating disk (141), a flip assembly for multi-station switching is provided outside the fixed disk (2), and a flushing assembly for cleaning is provided on the side of the oxidation box (1) away from the oxygen injection assembly (4); The turning assembly comprises side support rollers (25) rotatably connected to both sides of the interior of the fixed plate (2), and a bottom support roller (251) rotatably connected to the lower part of the interior of the fixed plate (2); A baffle (252) is hingedly connected to one side of the fixed disk (2), coil springs (253) are fixed to the outside of the rotating shafts on both sides of the baffle (252), and flip holes matching the outer diameter of the coil spring (253) are opened on both sides of the interior of the fixed disk (2), and the outer side of the coil spring (253) is fixedly connected to the inner side of the flip hole of the fixed disk (2); The fixed disks (2) are provided in six groups, and a turning frame (21) is fixed between the six groups of fixed disks (2). The fixed disks (2) are distributed at equal intervals outside the turning frame (21). A cover plate (23) is provided above the turning frame (21). Both ends of the turning frame (21) are rotatably connected to connecting frames (233), and the top of the connecting frame (233) is fixedly connected to the cover plate (23). A transmission disk (211) is fixed to one end of the turning frame (21), and a second motor (22) is installed at the top of the cover plate (23). An output disk is fixed to the end of the rotating shaft of the second motor (22). Metal chains (212) are provided on the outside of the transmission disk (211) and the output disk of the second motor (22). The metal chain (212) is composed of a metal rope and a plurality of metal balls, and the plurality of metal balls are fixed on the outside of the metal rope at equal intervals. The top of the oxidation box (1) is provided with an inlet and outlet (11), and both ends of the inlet and outlet (11) are provided with first support frames (241), and the bottom end of the first support frame (241) is fixedly connected to the top of the oxidation box (1), and a third motor (24) is installed on the top of one of the first support frames (241), and a first threaded rod (242) is fixed to the end of the rotating shaft of the third motor (24), and a guide slide rod (243) is fixed inside the other first support frame (241), and a first lifting block (231) is fixed to one end of the cover plate (23) close to the third motor (24), and the first lifting block (231) is threadedly connected to the first threaded rod (242), and a guide block (232) is fixed to one end of the cover plate (23) away from the third motor (24), and the guide block (232) is sleeved on the outside of the guide slide rod (243).

2. A photovoltaic cell oxidation device according to claim 1, characterized in that: The outer diameter of the bottom end of the cover plate (23) matches the inner diameter of the inlet and outlet (11).

3. A photovoltaic cell oxidation device according to claim 2, characterized in that: The flushing assembly comprises a water tank (5) fixed to a side of the oxidation tank (1) away from the oxygen injection assembly (4); a water pump (51) is installed at the top of the water tank (5); a water pump pipe (512) is fixed to the water inlet end of the water tank (5); the water pump pipe (512) is connected to the inside of the water tank (5); a water outlet pipe (511) is fixed to the water outlet end of the water pump (51); and a water spray frame (52) is fixed to the end of the water outlet pipe (511) away from the water pump (51).

4. A photovoltaic cell oxidation device according to claim 3, characterized in that: The water spray frame (52) is composed of a plurality of pipe bodies, and a plurality of spray heads (521) are fixed at equal intervals on the top of the water spray frame (52).

5. The photovoltaic cell oxidation device according to claim 4, characterized in that: A water receiving trough (53) is arranged above the oxidation box (1), a mesh plate (532) is fixed inside the water receiving trough (53), moving blocks (531) are fixed on both sides of the water receiving trough (53), the inner thread of the moving block (531) is connected to a second threaded rod (541), two groups of second support frames (542) are fixed on the side of the top of the oxidation box (1) away from the oxygen injection assembly (4), a fourth motor (54) is installed on the side of the second support frame (542) away from the second threaded rod (541), the end of the rotating shaft of the fourth motor (54) is fixedly connected to one end of the second threaded rod (541), and the other end of the second threaded rod (541) is rotatably connected to the top of the oxidation box (1) through a support block.

6. An oxidation process using the photovoltaic cell oxidation device according to any one of claims 1 to 5, characterized in that: The steps include: Silicon wafer cleaning: Clean the surface of photovoltaic cells by flushing the components to remove metal impurities, organic matter and oxide pollutants attached to the surface; Wafer drying: The cleaned photovoltaic cell is placed in an oxidation box (1), and the cleaned photovoltaic cell is dried by the heat of a high-temperature heating plate (3) to remove the moisture remaining on the surface of the photovoltaic cell after rinsing; Pretreatment: preheating the photovoltaic cells, increasing the temperature of the photovoltaic cells, and reducing the heating time during the oxidation process; Oxidation process: Under high temperature and oxygen reaction, a dense silicon dioxide oxide film is formed on the surface of the photovoltaic cell.

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