Silicon wafer cleaning device for solar cell production

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By introducing a servo motor-driven turntable system and a reciprocating stirring rack structure into the silicon wafer cleaning device, the problem of incomplete cleaning by existing devices has been solved, achieving a more efficient silicon wafer cleaning effect and a stable cleaning process.

CN223693086UActive Publication Date: 2025-12-19QUJING JA SOLAR TECHNOLOGY CO LTD

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Patent Information

Application Number: CN202520220758.X
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-02-12
Publication Date: 2025-12-19
Estimated Expiration: 2035-02-12

AI Technical Summary

Technical Problem

Existing silicon wafer cleaning devices only have one set of water agitation mechanisms, resulting in poor cleaning effects, reduced cleaning efficiency, and potentially longer cleaning times.

Method used

A silicon wafer cleaning device for solar cell production was designed. It adopts a turntable system driven by a servo motor. The first and second stirring frames are driven to reciprocate through movable blocks and connecting rods to enhance the water agitation effect. The silicon wafers are limited and fixed by guide rods and pressure plate structures.

Benefits of technology

It improves the cleaning effect of silicon wafers, reduces cleaning time, and prevents silicon wafers from moving or breaking randomly in the water flow, thus improving cleaning efficiency and effectiveness.

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Abstract

The utility model discloses a silicon wafer cleaning device for solar cell production, and relates to the technical field of silicon wafer cleaning, the silicon wafer cleaning device comprises a cleaning barrel and a polished rod, one side of the cleaning barrel is connected with a drain pipe, the top of the cleaning barrel is connected with a cover plate through a rotating shaft, and a driving motor is installed in the cleaning barrel. When the silicon wafer cleaning device for solar cell production is used, a servo motor can be started, the servo motor can drive a connecting rod and a connecting block to rotate through a rotating disc and a movable block, the connecting block is connected to one side of a first stirring frame, and therefore the connecting block can drive the first stirring frame to rotate in a reciprocating mode when rotating along with the connecting rod; and meanwhile, a driven shaft is driven to rotate through a first gear and a second gear, the driven shaft rotates to synchronously drive a second stirring frame to rotate through a transmission belt and a belt wheel, and the cleaning effect of the silicon wafers can be improved through continuous reciprocating rotation of a first stirring frame and the second stirring frame.

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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silicon wafer cleaning, in particular to a silicon wafer cleaning device for solar cell production. BACKGROUND

[0002] In the production process of solar cells, the cleaning of silicon wafers is a crucial step, as it removes impurities and contaminants from the surface of the silicon wafer, ensuring the photoelectric conversion efficiency of the cell. The design of a silicon wafer cleaning device needs to consider factors such as efficiency, cleaning effectiveness, and environmental impact.

[0003] The existing silicon wafer cleaning device, in order to reduce production cost, usually only installs a group of motors inside, through which the water flow inside can only be stirred in one direction, and only one set of stirring frame can be driven to stir the water flow. Therefore, the water flow can only rotate in a fixed direction in the cleaning barrel, which affects the cleaning effect and makes the silicon wafers not clean enough. At the same time, it also affects the cleaning efficiency, and it takes longer to clean the silicon wafers. SUMMARY

[0004] The utility model aims at providing a silicon wafer cleaning device for solar cell production to solve the problem of the existing silicon wafer cleaning device, which only has one set of water flow stirring mechanism, leading to the problem of not clean enough silicon wafers.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a silicon wafer cleaning device for solar cell production, comprising: a cleaning barrel and a light rod, one side of the cleaning barrel is connected with a drain pipe, the top of the cleaning barrel is connected with a cover plate through a rotating shaft, a drive motor is installed inside the cleaning barrel, the output end of the drive motor is connected with a lead screw through a shaft coupling, the outside of the lead screw is connected with a storage rack, the light rod is connected with the storage rack on the other side through a pipe connection;

[0006] A servo motor is installed inside the cleaning barrel, the output end of the servo motor is connected with a turntable through an output shaft, the edge of the turntable is connected with a movable block, a connecting rod is inserted into the middle of the movable block, and a connecting block is connected to the top of the connecting rod.

[0007] Preferably, the connecting block is connected with a first stirring frame at one end away from the connecting rod, and the outside of the first stirring frame is connected with a first gear.

[0008] Preferably, the two sides of the first gear are connected with a second gear through meshing, and a driven shaft is connected through the middle of the second gear.

[0009] Preferably, one side of the driven shaft is connected with a transmission belt through a belt pulley, and one end of the transmission belt is connected with a second stirring frame through a belt pulley.

[0010] Preferably, the top of the storage rack is provided with a guide rod and a fixing rod, and the fixing rod is provided with a tooth block in a groove.

[0011] Preferably, the guide rod and the fixing rod are slidably connected with a pressing plate in the middle, and the pressing plate is provided with a movable spring inside.

[0012] Preferably, the two sides of the movable spring are connected with a clamping block penetrating through the groove of the pressing plate, and the top of the clamping block is provided with a pulling block penetrating through the pressing plate.

[0013] Compared with the prior art, the silicon wafer cleaning device for solar cell production has the following beneficial effects: when in use, the servo motor can be started, the servo motor drives the connecting rod and the connecting block to rotate through the rotating disc and the movable block, the connecting block is connected to one side of the first stirring frame, so that the first stirring frame reciprocatingly rotates when the connecting block rotates with the connecting rod, the driven shaft rotates through the first gear and the second gear, the second stirring frame rotates through the transmission belt and the belt pulley driven by the driven shaft, and the cleaning effect of the silicon wafer is improved through the continuous reciprocating rotation of the first stirring frame and the second stirring frame.

[0014] 1. The silicon wafer cleaning device for solar cell production can drive the rotating disc to rotate through the servo motor when the silicon wafer of the solar cell is cleaned, the movable block rotates driven by the rotating disc, the connecting block rotates left and right driven by the connecting rod when the movable block rotates, so that the first stirring frame reciprocatingly rotates left and right, and the driven shaft rotates through the first gear and the second gear, the second stirring frame rotates left and right driven by the driven shaft through the transmission belt when the driven shaft rotates, the water flow is better stirred, and the cleaning effect of the silicon wafer is improved.

[0015] 2. The silicon wafer cleaning device for solar cell production can place the silicon wafer on the groove of the storage rack when the silicon wafer of the solar cell is cleaned, then pull the pulling block, the clamping block and the tooth block in the groove on the side of the fixing rod are separated, the pressing plate can be moved downward without the limiting action of the clamping block and the tooth block, the silicon wafer on the storage rack is limited by the pressing plate at this time, the silicon wafer cannot be moved randomly to affect the cleaning effect, and the stress caused by the water flow cannot cause the silicon wafer to be broken. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the cutting structure of the utility model;

[0017] Figure 2 It is the main view cut structure schematic diagram of the pressing plate of the utility model;

[0018] Figure 3 It is the top view structure schematic diagram of the servo motor of the utility model;

[0019] Figure 4 It is the first perspective three-dimensional structure schematic diagram of the first stirring frame of the utility model;

[0020] Figure 5 It is the second perspective three-dimensional structure schematic diagram of the first stirring frame of the utility model;

[0021] Figure 6 It is the three-dimensional structure schematic diagram of the utility model's storage rack.

[0022] In the drawing: 1, cleaning bucket; 2, drain pipe; 3, cover plate; 4, driving motor; 5, screw rod; 6, storage rack; 7, light pole; 8, servo motor; 9, rotary disc; 10, movable block; 11, connecting rod; 12, connecting block; 13, first stirring frame; 14, first gear; 15, second gear; 16, driven shaft; 17, transmission belt; 18, second stirring frame; 19, guide rod; 20, fixed rod; 21, tooth block; 22, pressing plate; 23, movable spring; 24, clamping block; 25, pull block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figure 1 The utility model provides a kind of technical scheme: a silicon wafer cleaning device for solar cell production, it includes: cleaning bucket 1 and light pole 7, the side of cleaning bucket 1 is connected with drain pipe 2, the top of cleaning bucket 1 is connected with cover plate 3 by rotating shaft, driving motor 4 is installed in the inside of cleaning bucket 1, driving motor 4 output end is connected with screw rod 5 by coupling, the outside of screw rod 5 is connected with storage rack 6, light pole 7 is connected with storage rack 6 on the other side by pipe connection away from screw rod 5;

[0025] The inside of the cleaning barrel 1 is provided with a servo motor 8, the output end of the servo motor 8 is connected with a rotating disc 9 through an output shaft, the edge of the rotating disc 9 is connected with a movable block 10, the middle of the movable block 10 is inserted with a connecting rod 11, the top of the connecting rod 11 is connected with a connecting block 12, the end of the connecting block 12 away from the connecting rod 11 is connected with a first stirring frame 13, the outer side of the first stirring frame 13 is connected with a first gear 14, the two sides of the first gear 14 are both connected with a second gear 15, the middle of the second gear 15 is connected with a driven shaft 16, one side of the driven shaft 16 is connected with a transmission belt 17 through a belt pulley, the end of the transmission belt 17 away from the driven shaft 16 is connected with a second stirring frame 18 through a belt pulley, and the second stirring frame 18 is symmetrically provided with two groups about the center line of the first stirring frame 13.

[0026] In specific implementation, the silicon wafer cleaning device for solar cell production can place the silicon wafer on the storage rack 6 when cleaning the silicon wafer of the solar cell, then start the driving motor 4, drive the storage rack 6 to move through the lead screw 5, and make the storage rack 6 move to the inside of the cleaning barrel 1 along the light rod 7;

[0027] When the storage rack 6 is located in the inside of the cleaning barrel 1, start the servo motor 8, the servo motor 8 drives the rotating disc 9 to rotate through the output shaft, the movable block 10 is movably connected with the edge of the rotating disc 9, and the movable block 10 can stretch and contract along the rotating disc 9, when the rotating disc 9 rotates, the movable block 10 is driven to move in a circle;

[0028] When the rotating disc 9 drives the movable block 10 to rotate to the right side, since one end of the movable block 10 is inserted into the outer side of the connecting rod 11, when the movable block 10 rotates to the right side, the connecting rod 11 is driven to rotate to the right side, the connecting rod 11 is connected with the first stirring frame 13 through the connecting block 12, therefore the whole first stirring frame 13 is driven to rotate to the right side, when the rotating disc 9 drives the movable block 10 to rotate to the left side, the movable block 10 is driven to rotate to the left side while stretching and contracting along the rotating disc 9, and the first stirring frame 13 is driven to rotate to the left side;

[0029] When the first stirring frame 13 rotates to the left and right sides, the first gear 14 on the outer side is driven to rotate to drive the second gear 15 to rotate, the second gear 15 is connected with the driving shaft in the middle, therefore the first gear 14 is driven to rotate through the second gear 15 to drive the driven shaft 16 to rotate, the transmission belt 17 is connected with the second stirring frame 18 through the belt pulley on one side of the driven shaft 16, and the other end of the transmission belt 17 is connected with the second stirring frame 18 through the belt pulley, therefore the second stirring frame 18 is driven to rotate under the cooperation of the transmission belt 17, the first stirring frame 13 and the second stirring frame 18 are synchronously driven to rotate, the water flow stirring effect in the inside of the cleaning barrel 1 is increased, and therefore the silicon wafer on the storage rack 6 can be better cleaned.

[0030] Referring to Figure 1 , Figure 3 , Figure 4 With Figure 5 It is known that, in use, the rotating disc 9 can be rotated by the servo motor 8, and the rotating disc 9 can drive the first stirring frame 13 to rotate through the connecting rod 11 and the connecting block 12, and then cooperate with the first gear 14 and the second gear 15 to drive the driven shaft 16 to rotate, and the driven shaft 16 can drive the second stirring frame 18 to rotate through the transmission belt 17, so that the water flow can be stirred better, and the cleaning effect of the silicon wafer can be increased.

[0031] The top of the storage rack 6 is provided with a guide rod 19 and a fixed rod 20, the groove of the fixed rod 20 is provided with a tooth block 21, the middle of the guide rod 19 and the fixed rod 20 is slidably connected with a pressing plate 22, the inside of the pressing plate 22 is provided with a movable spring 23, the two sides of the movable spring 23 are connected with clamping blocks 24 penetrating the groove of the pressing plate 22, the top of the clamping blocks 24 is provided with pull blocks 25 penetrating the pressing plate 22, and the pressing plate 22 forms a sliding structure between the guide rod 19 and the fixed rod 20.

[0032] In specific implementation, when it is necessary to press the silicon wafer, the silicon wafer can be placed on the groove of the storage rack 6, and then the two groups of pull blocks 25 at the top of the pressing plate 22 are pulled close to the middle, the movement of the pull blocks 25 drives the two groups of clamping blocks 24 to move close to each other, at this time, the clamping blocks 24 are separated from the tooth blocks 21 in the groove of the side surface of the fixed rod 20, without the butt joint of the clamping blocks 24 and the tooth blocks 21, the pressing plate 22 can slide downward along the guide rod 19, when the pressing plate 22 contacts the silicon wafer on the storage rack 6, the silicon wafer on the storage rack 6 can be limited by the pressing block at the bottom of the pressing plate 22, and then the pull blocks 25 are loosened, at this time, the two groups of clamping blocks 24 move away from each other by the reset action of the movable spring 23, and are butt jointed into the tooth blocks 21 in the groove of the fixed rod 20, at this time, the position of the pressing plate 22 can be limited and fixed, and the silicon wafer can be limited by the pressing plate 22, so that the silicon wafer can be prevented from floating randomly with the water flow.

[0033] Conversely, the above steps can be repeated, the pull blocks 25 are pulled again to separate the clamping blocks 24 from the tooth blocks 21 in the groove of the fixed rod 20, and then the pressing plate 22 is pulled upward, without the block of the pressing plate 22, the silicon wafer on the storage rack 6 can be taken out.

[0034] Referring to Figure 1 , Figure 2 With Figure 6It can be known that, in use, the silicon wafer can be placed on the storage rack 6 according to the use requirement, then the pull block 25 is pulled to separate the clamping block 24 from the tooth block 21 in the groove of the side surface of the fixing rod 20, at this time, the pressing plate 22 can be moved downward to limit the silicon wafer on the storage rack 6, so as to avoid the silicon wafer from moving randomly to affect the cleaning effect.

[0035] In summary: the silicon wafer cleaning device for solar cell production can inject clean water into the cleaning barrel 1 in use, then the silicon wafer can be placed on the storage rack 6, and the pressing plate 22 is pressed onto the storage rack 6, so that the silicon wafer can be limited, at this time, the driving motor 4 can be started, the driving motor 4 drives the storage rack 6 to move downward through the lead screw 5 and the light rod 7, when the storage rack 6 moves into the water, the servo motor 8 can be started, the servo motor 8 drives the first stirring rack 13 to rotate through the turntable 9, the movable block 10, the connecting rod 11 and the connecting block 12, at this time, the flowing water can clean the silicon wafer on the storage rack 6, after cleaning, the valve of the drain pipe 2 can be opened to discharge waste water, which is the use characteristics of the silicon wafer cleaning device for solar cell production, the contents not described in detail in the description belong to the prior art known to those skilled in the art.

[0036] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A silicon wafer cleaning device for solar cell production, comprising: The utility model provides a cleaning barrel (1) and light pole (7), its characterized in be: the one side of cleaning barrel (1) is connected with drain pipe (2), the top of cleaning barrel (1) is connected with cover plate (3) through rotating shaft, the inside installation of cleaning barrel (1) has drive motor (4), drive motor (4) output is connected with lead screw (5) through coupling, the outside of lead screw (5) is connected with storage rack (6), light pole (7) is connected with storage rack (6) in the other side and is away from lead screw (5) and is connected with pipe, The inside installation of cleaning barrel (1) has servo motor (8), the output of servo motor (8) is connected with carousel (9) through output shaft, the edge of carousel (9) is connected with movable block (10) through penetration, the middle insertion of movable block (10) has connecting rod (11), the top of connecting rod (11) is connected with connecting block (12).

2. The silicon wafer cleaning device for solar cell production according to claim 1, characterized in that: The one end of connecting block (12) is connected with first stirring frame (13) and is away from connecting rod (11), and the outside of first stirring frame (13) is connected with first gear (14). 3.The silicon wafer cleaning device for solar cell production of claim 2, wherein: The both sides of first gear (14) are connected with second gear (15) through penetration, and the middle penetration of second gear (15) is connected with driven shaft (16).

4. The silicon wafer cleaning device for solar cell production of claim 3, wherein: The one side of driven shaft (16) is connected with transmission belt (17) through belt pulley, and the one end of transmission belt (17) is connected with second stirring frame (18) through belt pulley and is away from driven shaft (16).

5. The silicon wafer cleaning device for solar cell production of claim 1, wherein: The top of storage rack (6) is installed with guide rod (19) and fixed rod (20), and the recess of fixed rod (20) is installed with tooth block (21).

6. The silicon wafer cleaning device for solar cell production of claim 5, wherein: The middle sliding connection of guide rod (19) and fixed rod (20) has pressing plate (22), and the inside installation of pressing plate (22) has movable spring (23).

7. The silicon wafer cleaning device for solar cell production of claim 6, wherein: The both sides of movable spring (23) are connected with clamping block (24) through the recess of pressing plate (22), and the top of clamping block (24) is installed with pull block (25) through the recess of pressing plate (22).