A cleaning device and a processing system for solar cells.
By designing the main water tank, auxiliary tank, and drip tank system of the battery cell cleaning device, the problem of water waste after cleaning was solved, water recycling was realized, and the amount of pure water used was reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 通合新能源(金堂)有限公司
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-31
AI Technical Summary
Existing chain-type wet cleaning equipment directly discharges pure water after cleaning the battery cells, resulting in a waste of water resources.
Design a battery cell cleaning device, including a main water tank, a secondary tank, a drain pipe and a drip tank. Through the combination of water-saving pipes and water supply pipes, the cleaning water is purified and reused. The secondary tank is used to purify the liquid flowing into the main water tank, and the drip tank is used as an intermediate storage and supply unit to circulate and supply the liquid to the main water tank.
It enables the recycling and reuse of the water after cleaning, reducing the amount of pure water used and reducing water waste.
Smart Images
Figure CN224583650U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery cell processing equipment technology, and more specifically, to a battery cell cleaning device and a battery cell processing system. Background Technology
[0002] In the production process of Topcon batteries, chain-type wet processing equipment is widely used for the cleaning and treatment of silicon wafers, including chain-type texturing equipment, chain-type acid etching equipment, and chain-type PSG (phosphosilicate glass) removal equipment. Chain-type wet processing equipment has become a crucial link in Topcon battery production due to its advantages such as low manufacturing cost, high output, and stable process results.
[0003] In some related technologies, battery cells are used in cleaning devices to remove PSG, and a large amount of pure water is directly discharged after the cleaning process, which easily leads to the waste of water resources. Utility Model Content
[0004] The purpose of this invention is to provide a battery cell cleaning device and a battery cell processing system, which can realize the recycling and reuse of water after cleaning, thereby reducing the waste of water resources.
[0005] The embodiments of this utility model can be implemented as follows:
[0006] In a first aspect, this utility model provides a battery cell cleaning device, comprising:
[0007] The main water tank is used to clean silicon wafers and is also connected to the first drain pipe.
[0008] The secondary tank is connected to the main water tank through a water-saving pipe. The secondary tank is used to purify the liquid flowing into the main water tank. The secondary tank is connected to the first water supply pipe. The end of the first water supply pipe away from the secondary tank is connected to a pure water source. A first valve is installed on the first water supply pipe. The secondary tank is also connected to a second drain pipe.
[0009] The sewage pipe is connected to the secondary trough via a second drainage pipe.
[0010] The drip tank is connected to the secondary tank via a second water supply pipe. Liquid in the secondary tank can flow to the drip tank through the second water supply pipe. The drip tank is used to supply liquid to the main water tank.
[0011] In an optional embodiment, a second valve is provided on the second drain pipe, and a liquid level detector is provided in the secondary tank, with the liquid level detector being communicatively connected to the second valve.
[0012] In an optional embodiment, the secondary tank is also connected to an overflow pipe. One end of the overflow pipe is connected to the secondary tank, and the other end of the overflow pipe is connected to the second drain pipe or sewage pipe. The other end of the overflow pipe is located downstream of the second valve. The height of the connection between the overflow pipe and the secondary tank is higher than that of the second drain pipe. When the liquid level in the secondary tank is higher than the height of the overflow pipe, the liquid can be discharged from the secondary tank through the overflow pipe.
[0013] In an optional implementation, the main water tank is also connected to a third water supply pipe, the end of which is away from the main water tank and connected to a pure water source.
[0014] In an optional embodiment, the secondary tank is also connected to a heat exchanger for exchanging heat with the secondary tank.
[0015] In an optional implementation, the heat exchanger is a heating coil.
[0016] In an optional embodiment, a pH detection device is also provided in the secondary tank, which is used to detect the pH value in the secondary tank.
[0017] In an optional embodiment, the battery cell cleaning device further includes a first filter element, through which a second water supply pipe passes, and the first filter element is used to filter the liquid flowing from the secondary tank to the drip tank.
[0018] In an optional embodiment, the cell cleaning device further includes a second filter element through which the water-saving pipe passes, and the second filter element is used to filter the liquid flowing from the main water tank to the secondary tank.
[0019] Secondly, this utility model provides a battery cell processing system, including a battery cell cleaning device according to any of the foregoing embodiments.
[0020] The beneficial effects provided by this utility model embodiment include: This utility model embodiment provides a battery cell cleaning device and a battery cell processing system. The battery cell processing system includes a battery cell cleaning device, which includes a main water tank, a secondary tank, a drain pipe, and a drip tank. The main water tank is used to clean silicon wafers and is also connected to a first drain pipe. The secondary tank is connected to the main water tank through a water-saving pipe and is used to purify the liquid flowing into the main water tank. The secondary tank is connected to a first water supply pipe, and the end of the first water supply pipe away from the secondary tank is connected to a pure water source. A first valve is installed on the first water supply pipe. The secondary tank is also connected to a second drain pipe, and the drain pipe is connected to the secondary tank through the second drain pipe. The drip tank is connected to the secondary tank through the second water supply pipe, and the liquid in the secondary tank can flow to the drip tank through the second water supply pipe. The drip tank is used to supply liquid to the main water tank. The secondary tank purifies the liquid flowing from the main tank. After purification, the liquid flows through a second supply pipe into a drip tank, which then serves as an intermediate storage and supply unit. The treated liquid is then supplied to the main tank for reuse in cleaning silicon wafers, thus recycling the wastewater and reducing the consumption of pure water. This system enables the recovery and reuse of the cleaning water, minimizing water waste. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 A schematic diagram of the structure of the battery cell cleaning device provided in an embodiment of this utility model;
[0023] Figure 2 This is a schematic diagram of the structure of a battery cell cleaning device provided in an optional embodiment of the present invention.
[0024] Icons: 1-Battery cell cleaning device; 100-Main water tank; 110-Water-saving pipe; 111-Switch valve; 200-Secondary tank; 210-First water supply pipe; 211-First valve; 220-Second drain pipe; 221-Second valve; 230-Level detector; 240-Overflow pipe; 300-Drain pipe; 400-Drip tank; 420-Second water supply pipe; 500-Heat exchanger; 600-pH detection device; 700-First filter element; 800-Second filter element. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0028] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0029] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0030] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0031] It should be noted that the cell cleaning device is mainly used to remove the BSG (borosilicate glass) and PSG (phosphosilicate glass) layers from the front and back of Topcon cells.
[0032] The following describes in detail, with reference to the accompanying drawings, the specific structure of a battery cell cleaning device provided by this utility model and its corresponding technical effects.
[0033] Please refer to Figure 1The present invention provides a battery cell cleaning device 1, which includes a main water tank 100, a secondary tank 200, a drain pipe 300 and a drip tank 400. The main water tank 100 is used to clean silicon wafers and is also connected to a first drain pipe. The secondary tank 200 is connected to the main water tank 100 via a water-saving pipe 110. The secondary tank 200 is used to purify the liquid flowing into the main water tank 100. The secondary tank 200 is connected to the first water supply pipe 210. The end of the first water supply pipe 210 away from the secondary tank 200 is connected to a pure water source. A first valve 211 is installed on the first water supply pipe 210. The secondary tank 200 is also connected to a second drain pipe 220. The sewage pipe 300 is connected to the secondary tank 200 via the second drain pipe 220. The drip tank 400 is connected to the secondary tank 200 via the second water supply pipe 420. The liquid in the secondary tank 200 can flow to the drip tank 400 via the second water supply pipe 420. The drip tank 400 is used to supply liquid to the main water tank 100.
[0034] It should be noted that the main water tank 100 in this application can be understood as the main cleaning tank for silicon wafers, directly involved in the cleaning of silicon wafers. After cleaning, the liquid in the main water tank 100 can be discharged through the first drain pipe, and the liquid in the main water tank 100 can also flow to the auxiliary tank 200 through the water-saving pipe 110.
[0035] The secondary tank 200 is mainly used to collect water discharged from the main water tank 100. It can also purify the liquid flowing into the main water tank 100. After purification in the secondary tank 200, the water flows into the drip tank 400 through the second water supply pipe 420. The drip tank 400 then serves as an intermediate storage and supply unit, supplying the treated water to the main water tank 100 for reuse in cleaning silicon wafers. This wastewater recycling reduces the amount of pure water used. The system enables the recovery and reuse of the cleaned water, reducing water waste.
[0036] It should be noted that the battery cell cleaning device 1 provided in this embodiment has two modes. The first mode is the pure water mode. In this mode, pure water from the pure water source can directly enter the auxiliary tank 200 through the first supply pipe, and then enter the drip tank 400 through the second supply pipe, and then enter the main water tank 100 from the drip tank 400 for cleaning silicon wafers. The wastewater after cleaning in the main water tank 100 can be directly discharged through the first drain pipe. At this time, the water-saving pipe 110 does not participate in the operation, that is, the water-saving pipe 110 is closed.
[0037] Understandably, a switch valve 111 is also installed on the water-saving pipe 110. In pure water mode, the switch valve 111 is closed.
[0038] The second mode is the water-saving mode. In this mode, the water-saving pipe 110 is open, and the wastewater from cleaning silicon wafers in the main water tank 100 can enter the secondary tank 200 through the water-saving pipe 110. After a certain degree of purification, the liquid in the secondary tank 200 returns to the drip tank 400 through the second water supply pipe 420. Then, the drip tank 400 supplies liquid to the main water tank 100 again for cleaning silicon wafers. In this way, the wastewater can be recycled, reducing the amount of pure water used and reducing the waste of water resources.
[0039] It should be noted that the purification of the liquid in the secondary tank 200 can be achieved by adding reactants or by adding a purification filter. Alternatively, the liquid in the secondary tank 200 can be purified simultaneously with the addition of purifying reactants and the use of a purification filter, thus restoring the liquid to a level suitable for cleaning silicon wafers. The aforementioned purifying reactants and purification filter are conventional methods used by those skilled in the art and will not be described in detail here.
[0040] It should be noted that the valves in the battery cell cleaning device 1 provided in this embodiment can be connected to the PLC for communication.
[0041] In the operation of the cell cleaning device 1 in this embodiment, when the system is first started, it defaults to pure water mode. At this time, the secondary tank 200 is empty, the water-saving pipe 110 is closed, and pure water enters the secondary tank 200 through the first water supply pipe 210. Then, the water in the secondary tank 200 enters the drip tank 400 through the second water supply pipe 420. Then, the drip tank 400 supplies liquid to the main water tank 100 to achieve the cleaning of the silicon wafer.
[0042] When water-saving mode is needed, the water-saving pipe 110 can be opened. The liquid in the main water tank 100 can enter the secondary tank 200 through the water-saving pipe 110. After a certain purification, the liquid in the secondary tank 200 returns to the drip tank 400 through the second water supply pipe 420. Then the drip tank 400 supplies liquid to the main water tank 100 again for cleaning silicon wafers.
[0043] In detail, a second valve 221 is installed on the second drain pipe 220, and a liquid level detector 230 is installed in the secondary tank 200. The liquid level detector 230 is communicatively connected to the second valve 221. Understandably, in water-saving mode, when the liquid level detector 230 detects that the liquid level in the secondary tank 200 exceeds the preset level, the second valve 221 can open. The liquid in the secondary tank 200 can then be discharged through the drain pipe 300 via the second drain pipe 220. This ensures the safety of the liquid level in the secondary tank 200, avoids overflow, and improves the operational safety of the battery cell cleaning device 1.
[0044] Optionally, in some embodiments, to further ensure that the secondary tank 200 overflows, the secondary tank 200 is also connected to an overflow pipe 240. One end of the overflow pipe 240 is connected to the secondary tank 200, and the other end of the overflow pipe 240 is connected to the second drain pipe 220 or the sewage pipe 300. The other end of the overflow pipe 240 is located downstream of the second valve 221. That is, the end of the overflow pipe 240 away from the secondary tank 200 is located downstream of the second valve 221. The height of the connection between the overflow pipe 240 and the secondary tank 200 is higher than that of the second drain pipe 220. When the liquid level in the secondary tank 200 is higher than the height of the overflow pipe 240, the liquid can be discharged from the secondary tank 200 through the overflow pipe 240.
[0045] Optionally, the main water tank 100 is also connected to a third water supply pipe. The end of the third water supply pipe away from the main water tank 100 is connected to a pure water source. In other words, in some cases, the pure water source can directly enter the main water tank 100 through the third water supply pipe to clean the main water tank 100.
[0046] Optionally, in order to ensure that the temperature of the liquid in the secondary tank 200 is within a suitable temperature range under different ambient temperatures, in some embodiments, the secondary tank 200 is also connected to a heat exchanger 500. The heat exchanger 500 is used to exchange heat with the secondary tank 200 so that the liquid in the secondary tank 200 is within a suitable temperature range, thereby ensuring that the liquid in the secondary tank 200 can be smoothly supplied to the main water tank 100 after entering the dripping tank 400 for cleaning silicon wafers.
[0047] In this embodiment, the heat exchanger 500 can be a heating coil, which can be a coil tube connected to the secondary tank 200. When the ambient temperature is low, it can heat the liquid in the secondary tank 200, keeping the liquid within a suitable temperature range, thus facilitating the smooth flow of the liquid from the secondary tank 200 to the drip tank 400. Of course, in some other embodiments, the heat exchanger 500 can also be other types of heat exchange structures, such as a PTC heating element.
[0048] Please refer to Figure 2 Optionally, in some embodiments, a pH detection device 600 is also provided in the secondary tank 200. The pH detection device 600 is used to detect the pH value in the secondary tank 200. It can be understood that by detecting the pH value of the liquid in the secondary tank 200 by the pH detection device 600, it is possible to prevent liquid with an excessively high pH value from entering the drip tank 400 and then entering the main water tank 100 to clean the silicon wafers, which could cause defects in the silicon wafers.
[0049] The pH detection device can be a conductivity instrument. For example, the pH detection device includes an electrode and a galvanometer. The electrode is set inside the sub-tank 200, and the galvanometer can be installed on the outer wall of the sub-tank 200. The galvanometer is connected to the electrode. The galvanometer can provide feedback on the pH value of the liquid in the sub-tank 200 through the detection status of the electrode, which also makes it convenient for users to observe the pH value through the galvanometer.
[0050] Optionally, the battery cell cleaning device 1 further includes a first filter element 700. In order to improve the filtration effect of the liquid flowing from the secondary tank 200 to the dripping tank 400, in some embodiments, the second water supply pipe 420 passes through the first filter element 700, which is used to filter the liquid flowing from the secondary tank 200 to the dripping tank 400.
[0051] Optionally, in some other embodiments, in order to achieve preliminary filtration and purification of the liquid flowing from the main water tank 100 to the secondary tank 200, the battery cell cleaning device 1 further includes a second filter element 800, through which the water-saving pipe 110 passes, and the second filter element 800 is used to filter the liquid flowing from the main water tank 100 to the secondary tank 200.
[0052] This utility model embodiment also provides a battery cell processing system, which includes the aforementioned battery cell cleaning device 1. Therefore, the battery cell processing system also possesses the same technical effects as the battery cell cleaning device 1, and the technical effects of the battery cell processing system will not be elaborated further here.
[0053] In summary, the present invention provides a battery cell cleaning device 1 and a battery cell processing system. The battery cell processing system includes a battery cell cleaning device 1, which includes a main water tank 100, a secondary water tank 200, a drain pipe 300, and a drip tank 400. The main water tank 100 is used to clean silicon wafers, and the main water tank 100 is also connected to a first drain pipe. The secondary tank 200 is connected to the main water tank 100 via a water-saving pipe 110. The secondary tank 200 is used to purify the liquid flowing into the main water tank 100. The secondary tank 200 is connected to the first water supply pipe 210. The end of the first water supply pipe 210 away from the secondary tank 200 is connected to a pure water source. A first valve 211 is installed on the first water supply pipe 210. The secondary tank 200 is also connected to a second drain pipe 220. The sewage pipe 300 is connected to the secondary tank 200 via the second drain pipe 220. The drip tank 400 is connected to the secondary tank 200 via the second water supply pipe 420. The liquid in the secondary tank 200 can flow to the drip tank 400 via the second water supply pipe 420. The drip tank 400 is used to supply liquid to the main water tank 100. The secondary tank 200 purifies the liquid flowing from the main water tank 100. After purification in the secondary tank 200, the liquid flows into the drip tank 400 through the second water supply pipe 420. The drip tank 400 then serves as an intermediate storage and supply unit, supplying the treated liquid to the main water tank 100 for reuse in cleaning silicon wafers. This wastewater recycling reduces the consumption of pure water. The system enables the recovery and reuse of the cleaned water, minimizing water waste.
[0054] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A cleaning device for battery pieces, characterized by, include: A main water tank (100) is used to clean silicon wafers, and the main water tank (100) is also connected to a first drain pipe; A secondary tank (200) is connected to the main water tank (100) via a water-saving pipe (110). The secondary tank (200) is used to purify the liquid flowing into the main water tank (100). The secondary tank (200) is connected to a first water supply pipe (210). The end of the first water supply pipe (210) away from the secondary tank (200) is connected to a pure water source. A first valve (211) is provided on the first water supply pipe (210). The secondary tank (200) is also connected to a second drain pipe (220). A sewage pipe (300) is connected to the secondary tank (200) via a second drainage pipe (220); A drip tank (400) is connected to the secondary tank (200) via a second water supply pipe (420). Liquid in the secondary tank (200) can flow to the drip tank (400) via the second water supply pipe (420). The drip tank (400) is used to supply liquid to the main water tank (100).
2. The battery cell cleaning apparatus according to claim 1, characterized in that: A second valve (221) is provided on the second drain pipe (220), and a liquid level detector (230) is provided in the sub-tank (200). The liquid level detector (230) is communicatively connected to the second valve (221).
3. The battery cell cleaning apparatus according to claim 2, characterized in that: The sub-tank (200) is also connected to an overflow pipe (240). One end of the overflow pipe (240) is connected to the sub-tank (200), and the other end of the overflow pipe (240) is connected to the second drain pipe (220) or the sewage pipe (300). The other end of the overflow pipe (240) is located downstream of the second valve (221). The height of the connection between the overflow pipe (240) and the sub-tank (200) is higher than that of the second drain pipe (220). When the liquid level in the sub-tank (200) is higher than the height of the overflow pipe (240), the liquid can be discharged from the sub-tank (200) through the overflow pipe (240).
4. The battery cell cleaning apparatus according to claim 1, characterized in that: The main water tank (100) is also connected to a third water supply pipe, the end of which is away from the main water tank (100) is connected to a pure water source.
5. The battery cell cleaning apparatus according to claim 1, characterized in that: The secondary tank (200) is also connected to a heat exchanger (500), which is used to exchange heat with the secondary tank (200).
6. The battery cell cleaning apparatus according to claim 5, characterized in that: The heat exchanger (500) is a heating coil.
7. The battery cell cleaning apparatus according to claim 1, characterized in that: The secondary tank (200) is also equipped with a pH detection device (600), which is used to detect the pH value in the secondary tank (200).
8. The battery cell cleaning apparatus according to claim 1, characterized in that: The battery cell cleaning device also includes a first filter element (700), through which the second water supply pipe (420) passes. The first filter element (700) is used to filter the liquid flowing from the sub-tank (200) to the drip tank (400).
9. The battery cell cleaning apparatus according to claim 1, characterized in that: The battery cell cleaning device also includes a second filter (800), through which the water-saving pipe (110) passes. The second filter (800) is used to filter the liquid flowing from the main water tank (100) to the secondary tank (200).
10. A cell processing system, comprising: The cleaning apparatus includes the battery cell cleaning device according to any one of claims 1-9.