Cleaning system

Abstract

The utility model discloses a cleaning system which comprises a conveying device and a cleaning device, the conveying device can convey workpieces from a feeding end to a discharging end, and the cleaning device can clean the workpieces in the conveying process. The cleaning device comprises an infiltrating mechanism, an ultrasonic mechanism, a polish-brush mechanism, a flushing mechanism and a drying mechanism which are sequentially arranged in the conveying direction of the conveying device, and workpieces can sequentially pass through the infiltrating mechanism, the ultrasonic mechanism, the polish-brush mechanism, the flushing mechanism and the drying mechanism in the process that the workpieces are driven by the conveying device to be conveyed. Through the arrangement of the conveying device and the cleaning device, the battery pieces can be automatically cleaned by the cleaning device in the process of being conveyed from the feeding end to the discharging end through the conveying device, manual interference is not needed, the automation degree is high, and the cleaning speed is high.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and specifically to a cleaning system. Background Technology

[0002] In the manufacturing process of solar cells, to ensure a high level of cleanliness on the silicon wafer surface, a large amount of cleaning solution is required, combined with chemical etching, ultrasonic vibration, and heating to remove contaminants. Currently, silicon wafer cleaning mostly uses tank-type cleaning machines. Inside these machines, the silicon wafers, supported by baskets or similar mechanisms, are held vertically, perpendicular to the horizontal plane, and pass through acid and / or alkaline washing tanks, as well as multiple rinsing tanks, to complete the cleaning process. However, tank-type silicon wafer cleaning suffers from drawbacks such as low automation and slow cleaning speed. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a cleaning system that solves the problems of low automation and slow washing speed of existing tank cleaning machines.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a cleaning system, comprising:

[0005] The conveying device can convey the workpiece from the infeed end to the discharge end. The workpiece in this application is a battery cell whose surface needs to be cleaned, but the workpiece is not limited to battery cells. Any workpiece whose upper surface is parallel or approximately parallel can be cleaned using the cleaning system of this application.

[0006] A cleaning device that can clean workpieces during the transport process;

[0007] The cleaning device includes an immersion mechanism, an ultrasonic mechanism, a brushing mechanism, a rinsing mechanism, and a drying mechanism arranged sequentially along the transmission direction of the transmission device. During the transmission process driven by the transmission device, the workpiece can pass through the immersion mechanism, the ultrasonic mechanism, the brushing mechanism, the rinsing mechanism, and the drying mechanism in sequence.

[0008] With the addition of a transmission device and a cleaning device, the solar cells can be automatically cleaned by the cleaning device during the process of being transported from the inlet to the outlet via the transmission device. No manual intervention is required, resulting in a high degree of automation and fast cleaning speed.

[0009] The cleaning device uses an immersion mechanism, an ultrasonic mechanism, a brushing mechanism, and a rinsing mechanism to clean the surface of the solar cells sequentially, which can improve the cleanliness of the solar cell surface and prevent the performance of the solar cells from being affected by surface contaminants.

[0010] Furthermore, the wetting mechanism includes a first nozzle disposed above and / or below the conveying device. The first nozzle is a conical solid nozzle, which can spray a first cleaning liquid onto the surface of the workpiece. The conical solid nozzle design allows the liquid to be evenly dispersed into the airflow, resulting in finer droplets, a better spray effect, and thus a better wetting effect on the workpiece.

[0011] Furthermore, the ultrasonic mechanism includes an ultrasonic tank for holding a first cleaning solution, and the workpiece can be immersed in the first cleaning solution for ultrasonic cleaning during the transmission process.

[0012] The ultrasonic mechanism also includes a heating element that heats the first cleaning fluid in the ultrasonic tank. When the workpiece passes through the ultrasonic mechanism, it can be simultaneously ultrasonicated and immersed in high temperature, making it easier for contaminants on the workpiece surface to be removed.

[0013] Furthermore, the brushing mechanism is disposed above and / or below the transmission device, and the brushing mechanism includes a brush that is rotatable and has a gap between it and the workpiece located on the transmission device.

[0014] Furthermore, the rinsing mechanism includes a steam rinsing mechanism, which includes a second nozzle connected to a steam generator and a second cleaning fluid pipeline. The second nozzle is capable of mixing the steam delivered by the steam generator and the cleaning fluid delivered by the cleaning fluid pipeline.

[0015] Furthermore, the rinsing mechanism also includes a cleaning spray mechanism, which includes a third nozzle connected to a second cleaning fluid pipeline, and the cleaning spray mechanism can spray a second cleaning fluid onto the workpiece surface.

[0016] Furthermore, the cleaning device also includes a drying mechanism, which includes an air knife and a second heating element, the air knife being connected to an airflow duct; the drying mechanism also includes a first filter, which is connected to the airflow duct, and the airflow passes through the first filter for filtration before reaching the workpiece surface.

[0017] Furthermore, it also includes a condensing device, which is connected to the cleaning device and located above the cleaning device. The condensing device can condense the hot gas or hot air in the cleaning device.

[0018] Furthermore, it also includes a liquid storage device, the outlet of which is connected to the inlet of the ultrasonic mechanism, and the liquid storage device includes a second filter, which is disposed on the pipe connecting the outlet of the liquid storage device and the inlet of the ultrasonic mechanism.

[0019] Furthermore, the conveying device includes multiple first rollers and multiple second rollers. The multiple first rollers are arranged sequentially along the conveying direction of the workpiece, and the second rollers are disposed above the first rollers, located on the upper and lower sides of the workpiece, respectively, enabling them to clamp and convey the workpiece. The arrangement of the first and second rollers to clamp the workpiece makes the conveying device more stable during workpiece conveying, preventing the workpiece from shifting position during the conveying process and during the cleaning process by the cleaning device.

[0020] The beneficial effects of this utility model are:

[0021] 1) With the setting of the transmission device and the cleaning device, the battery cells can be automatically cleaned by the cleaning device during the process of being transported from the feeding end to the discharging end by the transmission device. No manual intervention is required. The degree of automation is high and the cleaning speed is fast.

[0022] 2) The cleaning device uses an immersion mechanism, an ultrasonic mechanism, a brushing mechanism, and a rinsing mechanism to clean the surface of the solar cells in sequence, which can improve the cleanliness of the solar cell surface and prevent the performance of the solar cells from being affected by contaminants on the surface. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a cleaning system according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0027] In the diagram: 1. Conveying device; 11. First roller; 12. Second roller; 13. Feeding end; 14. Discharge end; 2. Cleaning device; 21. Immersion mechanism; 22. Ultrasonic mechanism; 23. Brushing mechanism; 24. Steam rinsing mechanism; 241. Steam generator; 242. Second cleaning fluid pipeline; 25. Cleaning spray mechanism; 26. Drying mechanism; 261. First filter; 262. Airflow pipeline; 27. Cooling mechanism; 3. Condensation device; 31. Condenser; 32. Condensation port; 4. Liquid storage device; 41. Second filter; 42. Second cleaning fluid pipeline; 5. Battery cell. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0030] See appendix Figure 1 and attached Figure 2 As shown, this embodiment provides a cleaning system for cleaning the grooved battery cells 5 to prevent surface contaminants from affecting their performance. The cleaning system includes a transfer device 1, a cleaning device 2, a condensation device 3, and a liquid storage device 4. The transfer device 1 transports the battery cells 5, and during transport, the cleaning device 2 cleans and dries them. The condensation device 3 collects steam and hot air generated during the cleaning process, preventing direct emission into the air and environmental pollution. The liquid storage device 4 stores a first cleaning solution, supplies it to the cleaning device 2, and recycles it, allowing for reuse and saving on its usage. The first cleaning solution is tap water, an organic solvent, or a cleaning agent, and is used to dissolve and remove contaminants from the surface of the battery cells 5.

[0031] In some embodiments, the conveying device 1 includes a plurality of first rollers 11 arranged sequentially along the conveying direction of the battery cell 5. The distance between two adjacent first rollers 11 is less than the length or width of the battery cell 5, ensuring that the plurality of first rollers 11 can sequentially convey the battery cell 5 from the inlet end 13 to the outlet end 14 of the conveying device 1. During the conveying process of the conveying device 1, the battery cell 5 can sequentially pass through the cleaning device 2 to complete the cleaning and drying of the battery cell 5.

[0032] In some embodiments, the transmission device 1 further includes a plurality of second rollers 12, which are disposed above the first rollers 11 and located on the upper and lower sides of the battery cell 5, respectively, to clamp the battery cell 5. The arrangement of the first rollers 11 and second rollers 12 to clamp the battery cell 5 makes the transmission device 1 more stable during transmission of the battery cell 5, preventing the battery cell 5 from shifting position during transmission and during the cleaning process by the cleaning device 2, thus avoiding any impact on the cleaning effect.

[0033] In some embodiments, the cleaning device 2 includes a wetting mechanism 21, which is disposed on one side of the feed end 13. After the battery cell 5 enters the cleaning system, it first passes through the wetting mechanism 21 to wet the battery cell 5, so as to facilitate subsequent cleaning.

[0034] The wetting mechanism 21 includes a first nozzle disposed above the roller. The first nozzle is connected to the outlet of the liquid storage device 4 via a first cleaning liquid pipe 42. The first cleaning liquid is sprayed onto the battery cell 5 through the first nozzle to wet and wet the surface of the battery cell 5. The first nozzle is a conical solid nozzle. By setting the first nozzle as a conical solid nozzle, the first cleaning liquid can be evenly dispersed into the airflow, thereby obtaining relatively fine droplets, resulting in a good spray effect, and thus achieving a good wetting effect on the battery cell 5, reducing the adhesion between contaminants and the battery cell 5.

[0035] In some embodiments, the cleaning device 2 further includes an ultrasonic mechanism 22, which includes an ultrasonic tank containing a first cleaning solution. During transport, the battery cell 5 is immersed in the first cleaning solution, and the contaminants on the surface of the battery cell 5 are removed by ultrasonic vibration. To further enhance the cleaning effect of the ultrasonic mechanism 22, a heating element is provided inside the ultrasonic mechanism 22 to heat the first cleaning solution in the ultrasonic tank. When the battery cell 5 passes through the ultrasonic mechanism, it is simultaneously subjected to ultrasonication and high-temperature immersion, making it easier for contaminants on the surface of the battery cell 5 to detach.

[0036] By setting up a wetting mechanism 21 in front of the ultrasonic mechanism 22, the battery cell 5 is wetted by the first cleaning liquid sprayed by the wetting mechanism 21 during the transmission process, which reduces the adhesion of contaminants to the surface of the battery cell 5. When it passes through the ultrasonic mechanism 22 for ultrasonic cleaning, a better ultrasonic cleaning effect can be achieved.

[0037] In some embodiments, the cleaning device 2 includes a brush mechanism 23, which is positioned above or below the battery cell 5 but does not contact the surface of the battery cell 5, thus being a non-contact brush. Utilizing the centrifugal force generated during the brush's rotation, a second cleaning liquid on the brush is flung out, possessing a certain speed and intensity, striking the surface of the battery cell 5 to remove contaminants. Since the battery cell 5 has already undergone wetting by the immersion mechanism 21 and high-temperature ultrasonic soaking by the ultrasonic mechanism 22, most of the contaminants have been removed. The remaining contaminants have relatively weak adhesion to the battery cell 5 and can be easily removed by the centrifugal cleaning liquid from the brush mechanism 23. The non-contact brush design prevents friction and damage to the surface of the battery cell 5 during cleaning. Furthermore, the non-contact design also prevents the brush from picking up contaminants from the battery cell 5, thus avoiding contamination of subsequent battery cells 5 during cleaning.

[0038] In some embodiments, the cleaning device 2 further includes a rinsing mechanism for rinsing the surface of the battery cell. The rinsing mechanism includes a steam rinsing mechanism 24, which includes a gas-liquid mixing nozzle. The nozzle sprays two fluids to rinse the battery surface. The gaseous state of the two fluids is water vapor, and the liquid state is a second cleaning liquid. In this embodiment, the second cleaning liquid is purified water or distilled water. The second cleaning liquid pipe 242 and the steam pipe are respectively connected to the mixing nozzle. The steam and the second cleaning liquid mix at the nozzle to form high-temperature water vapor, which cleans the surface and grooves of the battery cell 5. The two fluids utilize the different densities, surface tensions, viscosity, and gas solubility of the two substances to form a mixture with unique fluid behavior. Compared with traditional single-liquid cleaning methods, the two-fluid cleaning effect is better. The two-fluid cleaning has excellent surface tension and viscosity, and can form a cleaning layer on the target surface that can cover and penetrate micropores, effectively removing surface contaminants.

[0039] In some embodiments, the steam rinsing mechanism 24 includes a steam generator 241 connected to a mixing nozzle, which provides hot steam for the two-fluid rinsing process.

[0040] In some embodiments, the rinsing mechanism includes a cleaning spray mechanism 25, which includes fan-shaped nozzles. The cleaning spray mechanism 25 cleans the battery surface and groove by introducing a second cleaning liquid, rinsing away the water vapor remaining in the steam rinsing stage, so as to prevent the water vapor adhering to the surface of the battery cell from containing contaminants. After the water vapor is dried in the later stage, the contaminants will adhere to the surface of the battery cell 5 or the groove.

[0041] During the immersion, ultrasonic, and brushing stages of the cleaning process, the battery surface is heavily contaminated, so a first cleaning solution is used to clean the battery surface. In the rinsing stage, which is the final stage of battery cell cleaning, a second cleaning solution with higher purity is used. This reduces the cost of the cleaning solution and effectively prevents the cleaning solution from contaminating the battery outlet.

[0042] In some embodiments, the cleaning device 2 further includes a drying mechanism 26, which includes an air knife for providing airflow around the battery cell 5, the airflow being able to dry the second cleaning liquid on the surface of the battery cell 5. In order to accelerate the drying speed of the second cleaning liquid on the surface of the battery cell 5, a heating element is also provided for heating the airflow in the airflow duct 262, and the battery cell 5 is dried by the heated airflow (hot air).

[0043] In some embodiments, the drying mechanism 26 includes a first filter 261, which is connected to an airflow duct 262. Before reaching the surface of the battery cell 5, the airflow passes through the first filter 261 to filter out any impurities or contaminants that may be present in the airflow, thereby preventing secondary contamination of the battery cell 5 during the drying process.

[0044] By using a second cleaning solution during the rinsing stage and filtered gas to dry the cells during the drying stage, secondary contamination during the cell cleaning process is avoided, ensuring the cleanliness of the cells.

[0045] In some embodiments, a cooling mechanism 27 is also included, which includes an axial cooling fan to cool the battery cell 5 heated by the hot air from the drying mechanism 26, and then the battery cell 5 is output from the discharge end 14.

[0046] In some embodiments, the condensing device 3 is connected to and located above the cleaning device 2, and is used to condense and discharge the hot gas or hot air in the cleaning device 2. The condensing device 3 reduces the amount of waste gas discharged into the environment by the cleaning system, making it environmentally friendly.

[0047] Specifically, the condensing device 3 is connected to the ultrasonic mechanism 22. During high-temperature ultrasonication, the second cleaning liquid evaporates into high-temperature gas, which enters the condensing device 3 and is condensed into liquid by the condenser 31 before being discharged from the condenser port 32. Similarly, the condensing device 3 is connected to the rinsing mechanism, where the water mist and hot steam generated during the rinsing process are condensed by the condensing device 3. The condensing device 3 is also connected to the drying mechanism 26, where the hot air inside the drying mechanism 26 is cooled by the condensing device 3 before being discharged.

[0048] In some embodiments, the outlet of the liquid storage device 4 is connected to the inlets of the ultrasonic mechanism 22 and the wetting mechanism 21, respectively. The liquid storage device 4 provides the first cleaning fluid to the ultrasonic mechanism 22 and the wetting mechanism 21. Because the outlets of the ultrasonic mechanism 22 and the wetting mechanism 21 are connected to the inlet of the liquid storage device 4, the first cleaning fluid in the ultrasonic mechanism 22 and the wetting mechanism 21 can flow back to the liquid storage device 4. The liquid storage device 4 allows the first cleaning fluid in the ultrasonic mechanism 22 and the wetting mechanism 21 to be reused.

[0049] In some embodiments, the liquid storage device 4 further includes a second filter 41, which is disposed on the pipe connecting the liquid outlet of the liquid storage device 4 and the liquid inlet of the ultrasonic mechanism 22 and the immersion mechanism 21. During the process of the liquid storage device 4 delivering the first cleaning liquid to the ultrasonic mechanism 22 and the immersion mechanism 21, the first cleaning liquid is first filtered through the second filter 41 to ensure the cleanliness of the first cleaning liquid before being transmitted to the ultrasonic mechanism 22 and the immersion mechanism 21.

[0050] In some embodiments, the second filter 41 is disposed between the inlet and outlet of the liquid storage device 4. The second cleaning liquid in the liquid storage device 4 enters the second filter 41 from the outlet and then enters the liquid storage device 4 through the inlet, thereby achieving the effect of cleaning the cleaning liquid in the liquid storage device 4.

[0051] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

[0053] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0054] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A cleaning system, characterized in that, include: The transmission device (1) can transfer the workpiece from the feed end (13) to the discharge end (14). Cleaning device (2), which can clean the workpiece during the transmission process; The cleaning device (2) includes an immersion mechanism (21), an ultrasonic mechanism (22), a brushing mechanism (23), a rinsing mechanism, and a drying mechanism (26) arranged sequentially along the transmission direction of the transmission device (1). During the transmission process, the workpiece can pass through the immersion mechanism (21), the ultrasonic mechanism (22), the brushing mechanism (23), the rinsing mechanism, and the drying mechanism (26) in sequence.

2. The cleaning system according to claim 1, characterized in that, The immersion mechanism (21) includes a first nozzle disposed above and / or below the transmission device (1), the first nozzle being a conical solid nozzle capable of spraying a first cleaning liquid onto the surface of the workpiece.

3. The cleaning system according to claim 1, characterized in that, The ultrasonic mechanism (22) includes an ultrasonic tank for holding a first cleaning solution. During the transmission process, the workpiece can be immersed in the first cleaning solution for ultrasonic cleaning. The ultrasonic mechanism (22) also includes a heating element that can heat the first cleaning fluid in the ultrasonic tank.

4. The cleaning system according to claim 1, characterized in that, The brushing mechanism (23) is disposed above and / or below the transmission device (1). The brushing mechanism (23) includes a brush that is rotatable and has a gap between it and the workpiece located on the transmission device (1).

5. The cleaning system according to claim 1, characterized in that, The rinsing mechanism includes a steam rinsing mechanism (24), which includes a second nozzle. The second nozzle is connected to a steam generator (241) and a second cleaning fluid pipeline. The second nozzle can mix the steam delivered by the steam generator (241) and the cleaning fluid delivered by the cleaning fluid pipeline.

6. The cleaning system according to claim 1, characterized in that, The rinsing mechanism also includes a cleaning spray mechanism (25), which includes a third nozzle connected to a second cleaning fluid pipeline. The cleaning spray mechanism (25) can spray a second cleaning fluid onto the surface of the workpiece.

7. The cleaning system according to claim 1, characterized in that, The drying mechanism (26) includes an air knife and a second heating element, the air knife and the airflow pipe (262) are connected; the drying mechanism (26) also includes a first filter (261), the first filter (261) and the airflow pipe (262) are connected.

8. The cleaning system according to claim 1, characterized in that, The cleaning system also includes a condenser (3), which is connected to the cleaning device (2) and located above the cleaning device (2). The condenser (3) can condense the hot air or hot wind in the cleaning device (2).

9. The cleaning system according to claim 1, characterized in that, The cleaning system also includes a liquid storage device (4), the outlet of which is connected to the inlet of the ultrasonic mechanism (22). The liquid storage device (4) includes a second filter (42), which is installed on the pipe connecting the outlet of the liquid storage device (4) and the inlet of the ultrasonic mechanism (22).

10. The cleaning system according to claim 1, characterized in that, The transmission device (1) includes a plurality of first rollers (11) and a plurality of second rollers (12). The plurality of first rollers (11) are arranged sequentially along the conveying direction of the workpiece. The second rollers (12) are disposed above the first rollers (11) and are located on the upper and lower sides of the workpiece, respectively, and can clamp and transmit the workpiece.

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