Solar cell wet bench

Abstract

The application relates to a solar cell wet drying device and a solar cell wet machine. The solar cell wet drying device comprises a drying piece, a heating piece and a pure water channel. The drying piece is hollow to form a drying groove for containing the solar cell; the heating piece comprises a heating part and a gas conveying pipe, one end of the gas conveying pipe is communicated with the gas outlet of the heating part, and the other end is communicated with the drying groove; the pure water channel is arranged on the side of the drying piece and is used for recycling the heat of the drying piece. The pure water channel is arranged on the side of the drying piece, the heat on the surface of the drying piece is used for heating the pure water in the pure water channel, the heat recycling is realized, the energy utilization rate of the solar cell wet drying device is improved, and the production cost of the solar cell is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar cell production, in particular to a solar cell wet method machine. BACKGROUND

[0002] In the wet manufacturing process of solar cells, water, chemical reagents and other reaction by-products may be left on the surface of the cells in the processes of cleaning, texturing and etching. If these residues are not removed, they will not only reduce the photoelectric conversion efficiency of the solar cell, but also cause quality problems such as poor electrode contact and decreased surface passivation effect, which seriously affect the reliability and service life of the solar cell. Therefore, a solar cell wet drying device is needed to remove the water and other substances left on the surface of the solar cell. However, the existing solar cell wet drying device has the problem of high energy consumption, which increases the production cost of the solar cell. SUMMARY

[0003] Therefore, it is necessary to provide a solar cell wet drying device and a solar cell wet method machine to improve the above-mentioned defects in view of the problem of high energy consumption of the existing solar cell wet drying device.

[0004] In one aspect, the present application provides a solar cell wet drying device, comprising:

[0005] a drying piece, which is hollow to form a drying groove for accommodating a solar cell;

[0006] a heating piece, comprising a heating part and a gas conveying pipe, one end of the gas conveying pipe being in communication with the gas outlet of the heating part, and the other end being in communication with the drying groove, so as to convey the gas of the heating part to the drying groove; and

[0007] a pure water channel, which is arranged on the side of the drying piece and is used for recovering the heat of the drying piece.

[0008] By arranging the pure water channel on the side of the drying piece, the pure water in the pure water channel is heated by the heat on the surface of the drying piece, the heat is recycled and utilized, the energy utilization rate of the solar cell wet drying device is improved, and the production cost of the solar cell is reduced.

[0009] In some embodiments, the pure water channel is arranged in a serpentine shape.

[0010] In some embodiments, the pure water channel is integrally arranged on the drying piece; or

[0011] The solar cell wet drying device comprises a mounting plate arranged on the drying piece, and the pure water channel is arranged on the mounting plate.

[0012] In some embodiments, the solar cell wet drying device further comprises a drainage member arranged at the lower part of the drying member, the drainage member comprises a drainage groove and a drainage pipe, the inner wall of the drainage groove is arranged downwardly and obliquely, one end of the drainage groove is arranged in communication with the drying groove, the other end is arranged in communication with the drainage pipe, and the size of the drainage groove gradually decreases in the direction away from the drying groove.

[0013] In some embodiments, the solar cell wet drying device further comprises a gas circulation member, the gas circulation member comprises:

[0014] a gas-liquid separation part arranged at the drainage pipe, the gas-liquid separation part comprises a drainage end and an exhaust end; and

[0015] a gas return pipe, one end of which is arranged in communication with the exhaust end, and the other end is arranged in communication with the gas inlet of the heating member.

[0016] In some embodiments, the gas-liquid separation part is a gas permeable membrane arranged between the gas return pipe and the drainage pipe.

[0017] In some embodiments, the solar cell wet drying device further comprises a top cover arranged at the upper part of the drying groove, the top cover is openable and closable, one end of the gas supply pipe is arranged in communication with the heating part, and the other end is arranged in communication with the side surface of the drying member.

[0018] The top cover is arranged in communication with the end of the gas supply pipe away from the heating part.

[0019] In another aspect of the present application, a solar cell wet processing machine is provided, comprising:

[0020] the above-mentioned solar cell wet drying device; and

[0021] a water supply device arranged in communication with the inlet end of the pure water channel to provide pure water;

[0022] a solar cell wet processing tank arranged upstream of the solar cell wet drying device, the solar cell wet processing tank is arranged in communication with the outlet end of the pure water channel to receive the heated pure water.

[0023] In some embodiments, at least two side surfaces of the drying member are provided with the pure water channel, and the pure water channels of each side surface are arranged in series; and / or

[0024] The solar cell wet processing machine comprises at least two drying members, and the pure water channels of each drying member are arranged in series.

[0025] In some embodiments, the solar cell wet process machine further comprises a heating device, one end of which is in communication with the outlet end of the pure water channel, and the other end of which is in communication with the solar cell wet process tank, for heating the pure water. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a perspective view of a solar cell wet process drying device according to an embodiment of the present application;

[0027] Figure 2 FIG. 2 is a front view of the solar cell wet process drying device of FIG. 1; Figure 1

[0028] Figure 3 FIG. 3 is a sectional view of the solar cell wet process drying device of FIG. 1 along A-A;

[0029] Figure 4 FIG. 4 is a sectional view of the solar cell wet process drying device of FIG. 1 along B-B;

[0030] Figure 5 FIG. 5 is a perspective view of a solar cell wet process machine according to an embodiment of the present application;

[0031] Figure 6 FIG. 6 is a front view of the solar cell wet process machine of FIG. 5; Figure 5

[0032] Figure 7 FIG. 7 is a sectional view of the solar cell wet process machine of FIG. 5 along A-A; Figure 6

[0033] FIG. 8 is a sectional view of the solar cell wet process machine of FIG. 5 along B-B; Figure 8 Figure 6

[0034] Figure 9 FIG. 9 is a perspective view of a solar cell wet process machine according to an embodiment of the present application;

[0035] Figure 10 FIG. 10 is a perspective view of the solar cell wet process machine of FIG. 9, in which the pure water channels of the multiple sides of the drying member are connected in series.

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 1 solar cell wet process drying device; 11 drying member, 111 drying groove; 12 heating member, 121 heating portion, 122 gas supply pipe; 13 pure water channel; 14 mounting plate; 15 drainage member, 151 drainage groove, 152 drainage pipe; 16 gas circulation member, 161 gas-liquid separation portion, 1611 drainage end, 1612 gas discharge end, 162 gas return pipe; 17 top cover; 18 valve, 181 first valve, 182 second valve;

[0038] 2 water supply device;

[0039] ​​​​3 heating device;

[0040] 4 solar cell wet process tank;

[0041] 5 solar cell. DETAILED DESCRIPTION

[0042] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details, and that the present application is not limited to the specific embodiments disclosed below.

[0043] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0044] In addition, the terms "first", "second", etc. are used only for the purpose of description and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0045] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0048] To better understand the embodiments of this application, the following is combined with... Figures 1 to 10 The embodiments of this application will be described in detail.

[0049] like Figures 1 to 8 As shown, this application provides a wet drying apparatus 1 for solar cells, including a drying element 11, a heating element 12, and a pure water channel 13. The drying element 11 is hollow to form a drying tank 111 for accommodating solar cells 5. The heating element 12 includes a heating section 121 and a gas supply pipe 122. One end of the gas supply pipe 122 is connected to the outlet of the heating section 121, and the other end is connected to the drying tank 111 to transport gas from the heating section 121 to the drying tank 111. The pure water channel 13 is disposed on the side of the drying element 11 for recovering heat from the drying element 11.

[0050] The drying element 11 is hollow, that is, a cavity is formed inside the drying element 11, which constitutes a drying tank 111 for accommodating the solar cell 5.

[0051] The solar cell 5 can be stably arranged in the drying groove 111 by various fixing modes, and the embodiments of the present application do not limit this. Specifically, in some embodiments, a groove is arranged on the inner wall of the drying groove 111, and the solar cell 5 is arranged in the groove by clamping to realize the fixed arrangement of the solar cell 5 in the drying groove 111. In other embodiments, a clamping piece is arranged in the drying groove 111, and the solar cell 5 is clamped and fixed in the clamping piece. The clamping piece can be a fixing piece such as a clamping jaw, or a magnetic piece or a vacuum suction piece. In still other embodiments, a cradle such as a flower basket is arranged in the drying groove 111, and the solar cell 5 is placed in the cradle to realize batch placing or taking of the solar cell 5, thereby improving the production efficiency of the solar cell wet drying device 1.

[0052] The heating part 121 is a component for heating the gas. By arranging one end of the gas conveying pipe 122 in communication with the gas outlet of the heating part 121 and the other end in communication with the drying groove 111, the gas heated by the heating part 121 can be introduced into the drying groove 111 to form a gas flow with a certain temperature in the drying groove 111, thereby realizing the drying function of the solar cell 5 in the drying groove 111.

[0053] The pure water channel 13 refers to a channel for the flow of pure water, which can be a square channel or a circular channel, and the embodiments of the present application do not limit this. The pure water channel 13 is arranged on the side of the drying piece 11. Specifically, as shown in Figure 3 and 4 The pure water channel 13 can be arranged on one or more sides of the drying piece 11, or on all four sides of the drying piece 11, and the embodiments of the present application do not limit this. It should be noted that the pure water channel 13 can be integrally arranged on the side wall of the drying piece 11, or can be arranged on a separate plate and attached to the side wall of the drying piece 11, and the embodiments of the present application do not limit this.

[0054] In some embodiments, the drying piece 11 and / or the gas conveying pipe 122 are coated with a heat insulation material to reduce heat loss. In other embodiments, the gas conveying pipe 122 can be directly made of a material with low thermal conductivity to reduce heat loss.

[0055] By arranging the pure water channel 13 on the side of the drying piece 11, the heat on the surface of the drying piece 11 can be used to heat the pure water in the pure water channel 13, and the heated pure water can be used in the cleaning and texturing steps of the solar cell wet process, thereby realizing the function of heat recovery and improving the energy utilization rate of the solar cell wet drying device 1, thereby reducing the production cost of the solar cell. It should be noted that the heated pure water can also be used in other processes with temperature requirements, and the embodiments of the present application do not limit this.

[0056] As shown in Figure 7As shown in some embodiments, the pure water channel 13 is arranged in a serpentine manner.

[0057] The pure water channel 13 is arranged in a serpentine manner, that is, the pure water channel 13 is designed in a continuous "S" shape. By arranging the pure water channel 13 in a serpentine manner, the length of the pure water channel 13 can be extended, the residence time of the pure water in the pure water channel 13 can be increased, the heat recovery efficiency of the pure water can be significantly improved, and the energy utilization rate of the solar cell wet drying device 1 can be further improved.

[0058] As shown in some embodiments, the pure water channel 13 is arranged in a serpentine manner. Figures 3 to 8 As shown in some embodiments, the pure water channel 13 is arranged in a serpentine manner.

[0059] The pure water channel 13 is arranged in a serpentine manner, that is, the pure water channel 13 is designed in a continuous "S" shape. By arranging the pure water channel 13 in a serpentine manner, the length of the pure water channel 13 can be extended, the residence time of the pure water in the pure water channel 13 can be increased, the heat recovery efficiency of the pure water can be significantly improved, and the energy utilization rate of the solar cell wet drying device 1 can be further improved.

[0060] In comparison, in some other embodiments, the pure water channel 13 is arranged on the outside of the drying piece 11 through the mounting plate 14. That is, the pure water channel 13 is composed of a channel in the mounting plate 14, so that different aperture and direction of the pure water channel 13 can be replaced, and the applicability of the solar cell wet drying device 1 can be improved. The mounting plate 14 is arranged on the outside of the drying piece 11, and the mounting plate 14 and the drying piece 11 can be connected by heat-conducting glue, or can be connected by bolts, clamps or other detachable ways.

[0061] As shown in some embodiments, the pure water channel 13 is arranged in a serpentine manner. Figure 1 、 2 As shown in some embodiments, the solar cell wet drying device 1 further comprises a drainage piece 15 arranged at the lower part of the drying piece 11. The drainage piece 15 comprises a drainage groove 151 and a drainage pipe 152. The inner wall of the drainage groove 151 is arranged in an inclined downward manner. One end of the drainage groove 151 is arranged in communication with the drying groove 111, and the other end is arranged in communication with the drainage pipe 152. The size of the drainage groove 151 gradually decreases in the direction away from the drying groove 111.

[0062] The drainage member 15 is arranged at the lower part of the drying member 11, and is used for timely draining the liquid such as water and chemical reagent in the drying groove. The drainage member 15 comprises a drainage groove 151 and a drainage pipe 152, wherein the inner wall of the drainage groove 151 is arranged in a downward inclined manner, so as to ensure that the liquid can be naturally drained under the action of gravity, and improve the draining efficiency of the liquid.

[0063] The drainage groove 151 is arranged in communication with the drying groove 111 at one end, and is arranged in communication with the drainage pipe 152 at the other end, and the size of the drainage groove 151 gradually decreases in the direction away from the drying groove 111. That is, the drainage groove 151 is in a funnel shape, which is convenient for collecting the drained liquid into the drainage pipe 152, and realizes the recycling treatment of the liquid.

[0064] The drainage pipe 152 is arranged in communication with the small end of the drainage groove 151, and is used for collecting the liquid in the drainage groove 151, so as to prevent the residual chemical reagent from affecting the environment. The drainage pipe 152 and the small end of the drainage groove 151 can be connected in a detachable connection mode such as bolt connection and clamping connection, so as to facilitate maintenance and cleaning.

[0065] By arranging the drainage member 15, on the one hand, the liquid in the drying groove 111 can be timely drained, and the drying quality of the solar cell 5 is improved; on the other hand, the drainage member 15 is also a gas discharge channel in the drying groove 111, and the gas flows through the solar cell 5 and is discharged from the drainage member 15 to the drying groove 111, so as to realize the circulating flow of the hot air in the drying groove 111, and further improve the drying quality of the solar cell 5.

[0066] As shown in FIGS. Figure 1 and Figure 2 In some embodiments, the solar cell wet drying device 1 further comprises a gas circulation member 16, and the gas circulation member 16 comprises a gas-liquid separation part 161 and a gas return pipe 162. The gas-liquid separation part 161 is arranged in the drainage pipe 152, and comprises a drainage end 1611 and a gas discharge end 1612. The gas return pipe 162 is arranged in communication with the gas discharge end 1612 at one end, and is arranged in communication with the gas inlet of the heating member 12 at the other end.

[0067] The gas circulation member 16 is a gas recycling member of the solar cell wet drying device 1, and mainly comprises the gas-liquid separation part 161 and the gas return pipe 162. The gas-liquid separation part 161 is a member for separating the gas and the liquid in the drainage pipe 152, and discharges the liquid and the gas from the drainage end 1611 and the gas discharge end 1612 respectively, so as to realize the separation of the gas and the liquid. Specifically, the gas-liquid separation part 161 can be a member for separating the gas and the liquid by using gravity, or can be a member for separating the gas and the liquid by using centrifugal force, and the embodiments of the present application do not limit this.

[0068] The back gas pipe 162 is arranged in communication with the exhaust end 1612 at one end and the gas inlet of the heating element 12 at the other end. By arranging the back gas pipe 162, the gas separated from the gas-liquid separation part 161 can be introduced back into the heating element 12. The gas is heated to a preset temperature in the heating element 12 and then flows back into the drying groove 111. In this way, the heat in the solar cell wet drying device 1 can be further recycled, the energy utilization rate is improved, and the production cost is reduced.

[0069] By arranging the gas circulation part 16, the gas separated from the drying groove 111 can be recycled, the circulation of the gas in the drying groove 11 is realized, and the residual heat of the gas can be reused. The energy utilization rate of the solar cell wet drying device 1 is further improved.

[0070] In some embodiments, the solar cell wet drying device 1 further comprises a drying part arranged in the back gas pipe 162, which is used to remove the liquid in the backflow gas, and further improve the drying effect of the solar cell wet drying device 1.

[0071] As shown in Figure 1 and 2 In some embodiments, the solar cell wet drying device 1 further comprises a valve 18 arranged at the gas inlet of the heating element 12, which is used to adjust the flow of the gas entering the heating element 12. Specifically, the valve 18 comprises a first valve 181 and a second valve 182. The first valve 181 is used to adjust the flow of the backflow gas in the back gas pipe 162, and the second valve 182 is used to adjust the flow of the additional gas, so as to ensure that the heating element 12 and the drying groove 111 have sufficient gas. For example, when the solar cell wet drying device 1 starts to work, the second valve 182 is opened to ensure sufficient gas flow in the heating element 12, and when the solar cell wet drying device 1 works stably, only the first valve 181 needs to be opened.

[0072] In some embodiments, the gas-liquid separation part 161 is a gas-permeable membrane arranged between the back gas pipe 162 and the drain pipe 152.

[0073] The gas-permeable membrane is a kind of selective permeation material, which can allow the passage of gas and can prevent the passage of liquid. The gas-permeable membrane is arranged between the back gas pipe 162 and the drain pipe 152. Specifically, the gas-permeable membrane is arranged on the inner side wall of the communication part of the drain pipe 152 and the back gas pipe 162. During the backflow of the gas, the gas is allowed to flow into the back gas pipe 162 and the liquid is prevented from flowing into the back gas pipe 162.

[0074] By arranging the gas-permeable membrane between the back gas pipe 162 and the drain pipe 152, the structure of the gas-liquid separation part 161 can be simplified.

[0075] As shown in Figure 1 and 2As shown, in some embodiments, the solar cell wet drying device 1 further comprises a top cover 17 which is openably and closably arranged on the upper portion of the drying groove 111, and the gas conveying pipe 122 is arranged in communication with the heating portion 121 at one end and with the side surface of the drying member 11 at the other end.

[0076] The top cover 17 is openably and closably arranged on the upper portion of the drying groove 111. Specifically, in some embodiments, the top cover 17 is hingedly arranged on the upper side of the drying member 11, and the opening and closing of the drying groove 111 is realized by rotating the top cover 17 relative to the drying member 11. In other embodiments, the top cover 17 is slidingly arranged on the upper side of the drying member 11, and the opening and closing of the drying groove 111 is realized by moving the top cover 17 relative to the drying member 11. It should be noted that the top cover 17 can also be in other forms to realize the opening and closing of the drying groove 111, and the embodiments of the present application do not limit this. By arranging the top cover 17 which is openably and closably arranged on the upper portion of the drying groove 111, the opening of the drying groove 111 can be realized by using the top cover 17, which is convenient for the solar cell 5 to be put in or taken out. When the solar cell 5 is dried, the inside of the drying groove 111 can be in a closed state by closing the top cover 17, which can prevent heat from being lost due to the overflow of gas, and further improve the energy utilization rate of the solar cell wet drying device 1.

[0077] In some embodiments, the solar cell wet drying device 1 further comprises a locking member arranged on the top cover 17. The locking member can be a magnetic lock, a mechanical bolt, or an electronic lock, and the embodiments of the present application do not limit this. By arranging the locking member, the stable closing of the top cover 17 during the drying process can be ensured, and the pollution of the solar cell 5 or the loss of heat due to accidental opening can be prevented.

[0078] The gas conveying pipe 122 is arranged in communication with the heating portion 121 at one end and with the side surface of the drying member 11 at the other end. Specifically, the other end of the gas conveying pipe 122 can be arranged in communication with any side surface of the drying member 11, and the embodiments of the present application do not limit this. Preferably, when the drying member 11 is in the shape of a rectangular parallelepiped, the gas conveying pipe 122 is arranged in communication with the side surface in the width direction of the drying member 11. In this way, the pure water channel 13 can be arranged on the side surface in the length direction of the drying member 11, the contact area of the pure water channel 13 and the drying member 11 is increased, the heat collection effect is increased, and the pure water channel 13 can be avoided, thereby simplifying the structure of the solar cell wet drying device 1. It should be noted that when the four side surfaces of the drying member 11 are all provided with the pure water channel 13, the communication part of the gas conveying pipe 122 with the side surface of the drying member 11 needs to avoid the pure water channel.

[0079] The gas pipe 122 is arranged in communication with the heating part 121 at one end and the side of the drying part 11 at the other end, that is, the gas heated by the heating part 121 flows into the drying groove 111 from the side of the drying part 11 through the gas pipe 122. In this way, the gas in the drying groove 111 flows into the drying groove 111 from the side of the drying part 11 and then flows out from the bottom of the drainage part 15 after passing through the solar cell 5 in the drying groove 111, forming a flowing hot air in the drying groove 111, which can carry the liquid out of the drying groove 111 while drying the solar cell 5. In addition, the end of the gas pipe 122 away from the heating part 121 is arranged in communication with the side of the drying part 11, which can avoid affecting the opening and closing of the top cover 17 and the taking and placing of the solar cell 5 due to the communication between the gas pipe 122 and the top cover 17, and can also avoid the input position of the gas being too close to the discharge position due to the communication between the gas pipe 122 and the bottom of the drying part 11, which can cause the gas to be unable to effectively disperse to the upper region of the drying groove 111, thereby affecting the drying effect of the solar cell 5.

[0080] As shown in Figure 9 and 10 Another aspect of the present application provides a solar cell wet process machine, which comprises a solar cell wet drying device 1, a water supply device 2 and a solar cell wet process tank 4. The water supply device 2 is arranged in communication with the inlet end of the pure water channel 13 to provide pure water. The solar cell wet process tank 4 is arranged upstream of the solar cell wet drying device 1 and is arranged in communication with the outlet end of the pure water channel 13 to receive the heated pure water.

[0081] The water supply device 2 is arranged in communication with the inlet end of the pure water channel 13, and the solar cell wet process tank 4 is arranged in communication with the outlet end of the pure water channel 13. That is, the water supply device 2 and the solar cell wet process tank 4 are connected through the pure water channel 13, so that the pure water provided by the water supply device 2 flows through the pure water channel 13 first, is heated by the waste heat of the solar cell wet drying device 1 and then flows into the solar cell wet process tank 4 to adjust the temperature of the liquid in the solar cell wet process tank 4.

[0082] Specifically, in some embodiments, the solar cell wet process tank 4 comprises a silicon wafer cleaning tank for removing contaminants, oxide layers or residues on the surface of the silicon wafer. In order to improve the chemical activity of the cleaning liquid and thus improve the cleaning effect of the silicon wafer, the liquid in the silicon wafer cleaning tank has a temperature requirement. However, during use, the temperature of the liquid in the silicon wafer cleaning tank will decrease due to the taking of the silicon wafer and other factors. By arranging the outlet end of the pure water channel 13 in communication with the silicon wafer cleaning tank, heated pure water can be added to the silicon wafer cleaning tank to adjust the temperature of the silicon wafer cleaning tank and maintain it within a predetermined range.

[0083] In other embodiments, the solar cell wet process tank 4 also includes a texturing tank to form a textured surface on the silicon wafer, thereby reducing light reflection and improving light absorption efficiency. Similarly, by connecting the outlet end of the pure water channel 13 to the texturing tank, hot pure water can be added to the texturing tank to adjust its temperature and maintain it within a preset range.

[0084] It should be noted that the solar cell wet process tank 4 may also include other process tanks with temperature requirements in the solar wet process, and this application embodiment does not limit this.

[0085] The solar cell wet process machine of this application utilizes the heat from the solar cell wet drying device 1 to heat pure water, thereby recovering and utilizing the heat in the solar cell wet drying device 1, reducing the energy consumption of the solar cell wet process machine, and lowering production costs.

[0086] like Figure 10 As shown, in some embodiments, at least two sides of the drying element 11 are provided with pure water channels 13, and the pure water channels 13 on each side are connected in series; and / or the solar cell wet process machine includes at least two drying elements 11, and the pure water channels 13 of each drying element 11 are connected in series.

[0087] Specifically, in some embodiments, at least two sides of the drying element 11 are provided with pure water channels 13, and the pure water channels 13 on each side are connected in series. That is, pure water flows into the solar cell wet process tank 4 only after passing through the pure water channels 13 on each side in sequence. In this way, the flow distance of pure water can be extended, achieving efficient heating of pure water. In other embodiments, the solar cell wet process machine includes at least two drying elements 11, and the pure water channels 13 of each drying element 11 are connected in series. Similarly, this allows pure water to pass through the pure water channels 13 of each drying element 11 in sequence, improving the heating effect. In still other embodiments, the solar cell wet process machine includes multiple drying elements 11, and at least two sides of each drying element 11 are provided with pure water channels 13. Pure water flows through the pure water channels 13 on each side of the drying element 11 in sequence before flowing into the pure water channel 13 of the next drying element, ensuring the maximum flow distance of pure water and further improving the heating effect.

[0088] like Figure 10 As shown, in some embodiments, the solar cell wet process machine also includes a heating device 3, one end of which is connected to the outlet end of the pure water channel 13, and the other end is connected to the solar cell wet process tank 4, for heating pure water.

[0089] The heating device 3 is in communication with the outlet end of the pure water channel 13 at one end and is in communication with the solar cell wet process tank 4 at the other end. In this way, the pure water provided by the water supply device 2 first passes through the pure water channel 13, is heated once by the waste heat of the solar cell wet drying device 1, and then flows into the heating device 3. The pure water is heated twice in the heating device 3 to further increase the temperature of the pure water. The pure water heated twice is introduced into the solar cell wet process tank 4 to adjust the temperature of the solar cell wet process tank 4. It should be noted that in some embodiments, the water supply device 2 and the heating device 3 are also directly connected by an additional pipeline to ensure that the pure water in the heating device 3 is supplied in time and in sufficient quantity, and to further ensure that sufficient hot water is provided for the solar cell wet process tank 4.

[0090] In some embodiments, the heating device 3 further comprises a temperature control member for adjusting the temperature of the pure water output by the heating device 3.

[0091] The temperature control member is a component for adjusting the temperature of the pure water output by the heating device 3, so that the temperature of the pure water flowing from the heating device 3 to the solar cell wet process tank 4 is maintained within a predetermined range, and the pure water in the solar cell wet process tank 4 is accurately adjusted to meet different process requirements.

[0092] Specifically, as shown in Figures 1 to 10 In the drying process of the solar cell wet drying device 1, the water supply device 2 provides pure water to the pure water channel 13, so that the pure water is heated once by the waste heat outside the drying member 11 when flowing through the pure water channel 13 arranged outside the drying member 11. Subsequently, the pure water flows into the heating device 3, is heated twice to a predetermined temperature, and is then delivered to the solar cell wet process tank 4 to participate in the preparation process of the solar cell 5 raw material and / or semi-finished product. In this way, in the production process of the solar cell 5, the pure water can be preliminarily heated by the waste heat of the solar cell wet drying device 1, the heat in the solar cell wet drying device 1 is recycled and utilized, the energy consumption of the solar cell wet machine is reduced, and the production cost is reduced.

[0093] The technical features of the above-described embodiments can be combined in any way. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as within the scope of the present disclosure.

[0094] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A solar cell wet machine characterized by, The solar cell wet processing machine includes: A solar cell wet drying device includes a drying component, a heating component, and a mounting plate. The drying component is hollow to form a drying tank for accommodating solar cells. The heating component includes a heating part and a gas supply pipe. One end of the gas supply pipe is connected to the gas outlet of the heating part, and the other end is connected to the drying tank to deliver gas from the heating part to the drying tank. The mounting plate is fitted to the outside of the drying component and has a pure water channel for recovering heat from the drying component. A water supply device is connected to the inlet end of the pure water channel to provide pure water; and A solar cell wet process tank is located upstream of the solar cell wet drying device. The solar cell wet process tank is connected to the outlet end of the pure water channel and is used to receive the heated pure water.

2. The solar cell wet machine of claim 1, wherein, The pure water channel is arranged in a serpentine, meandering pattern.

3. The solar cell wet machine of claim 1, wherein, The solar cell wet drying device also includes a drainage component disposed at the lower part of the drying component. The drainage component includes a drainage trough and a drainage pipe. The inner wall of the drainage trough is inclined downward. One end of the drainage trough is connected to the drying trough, and the other end is connected to the drainage pipe. The size of the drainage trough gradually decreases in the direction away from the drying trough.

4. The solar cell wet machine of claim 3, wherein, The solar cell wet drying apparatus further includes a gas circulation component, which comprises: A gas-liquid separator is provided in the drain pipe, the gas-liquid separator including a drain end and an exhaust end; and The return pipe is connected at one end to the exhaust end and at the other end to the air inlet of the heating element.

5. The solar cell wet machine of claim 4, wherein, The gas-liquid separation section is a breathable membrane disposed between the return gas pipe and the drain pipe.

6. The solar cell wet machine according to any one of claims 3 to 5, wherein, The solar cell wet drying device also includes an openable and closable top cover on the upper part of the drying tank, one end of the gas supply pipe is connected to the heating part, and the other end is connected to the side of the drying component.

7. The solar cell wet machine of claim 1, wherein, The drying element has pure water channels on at least two sides, and the pure water channels on each side are connected in series; and / or The solar cell wet process machine includes at least two drying elements, and the pure water channels of each drying element are connected in series.

8. The solar cell wet machine of claim 1, wherein, The solar cell wet process machine also includes a heating device, one end of which is connected to the outlet end of the pure water channel, and the other end of which is connected to the solar cell wet process tank, for heating the pure water.

Images