Acetic acid attenuation reaction box
By separating the battery cells from the acetic acid solution in the acetic acid degradation reaction chamber, and by using a grid isolation and top flushing water inlet design, the problems of uneven acetic acid mist and residue on the surface of the battery cells are solved, thus improving the accuracy of the test results.
Patent Information
- Application Number
- CN202520308311.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-25
AI Technical Summary
The uneven distribution of acetic acid mist in the existing acetic acid degradation reaction chamber and the excessive etching caused by residues on the surface of the battery cells affect the accuracy of the test results.
Design an acetic acid degradation reaction chamber to separate the battery cells from the acetic acid solution using a grid for isolation. The acetic acid mist escapes downwards from above the battery cells. A rinsing water inlet pipe is installed at the top of the degradation chamber to rinse away any residual acetic acid solution and prevent the battery cells from directly contacting the acetic acid solution.
It improves the uniformity of acetic acid mist in the decay chamber, avoids excessive local etching of the battery cells, and improves the accuracy of reliability test results.
Smart Images
Figure CN223581717U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to solar cell technical field, concretely relates to an acetic acid attenuation reaction box. BACKGROUND
[0002] The slurry used in the process of making solar cell contains a large amount of aluminum paste and glass material, and the traditional packaging material EVA is prone to hydrolysis to produce acetic acid, which causes the grid line to be corroded and leads to acetic acid attenuation. Accurate measurement of acetic acid attenuation is crucial to improving the reliability of the module and the battery.
[0003] The current acetic acid attenuation reaction box is a single box design, and the cell sheet and the acetic acid solution are in the same box. The cell sheet is directly inserted into the acetic acid solution at the bottom of the reaction box, and the uniformity of the acetic acid vapor is ensured by heating and fan. Since the acetic acid solution exists at the bottom of the cell sheet, although the fan is used to increase the uniformity of the acid mist, the uniformity is difficult to guarantee when the wind speed is too small, and the acid mist and the cell sheet contact for too short a time when the wind speed is too large, which is not conducive to the reaction. Even if the wind speed is adjusted appropriately, it is also difficult to guarantee the up-down uniformity of the acetic acid mist due to the existence of the acetic acid liquid. After the reaction is completed, due to the uneven distribution of the acetic acid mist, the local residue on the cell sheet is easily caused during the cooling process due to the decrease in solubility, which causes local over-etching. Therefore, it is difficult to control the uniformity of the acetic acid mist in the actual experimental environment, and the acid and salt residues are easily caused, which may affect the reliability test results. SUMMARY
[0004] The utility model embodiment provides a kind of acetic acid attenuation reaction box, to solve the problem of uneven acetic acid mist and acetic acid residue on the surface of cell sheet leading to over-etching and affecting test results.
[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows: an acetic acid attenuation reaction box is provided, comprising: an attenuation box, a solution tank and a flushing water inlet pipe, a partition grid for condensation of acetic acid solution dripping is arranged at the bottom of the attenuation box, and the partition grid and the bottom of the attenuation box have a space capable of containing acetic acid solution; an acid mist pipe is arranged between the solution tank and the attenuation box to allow the acetic acid mist formed in the solution tank to enter the attenuation box through the acid mist pipe; and the flushing water inlet pipe is arranged at the top of the attenuation box to flush the cell sheet in the attenuation box.
[0006] In an implementable manner, the solution tank is integrated below the attenuation box.
[0007] In an implementable manner, a waste liquid recovery discharge pipe is arranged at the bottom of the attenuation box.
[0008] In an implementation, the top of the attenuation tank is provided with a flushing spray pipe communicating with the flushing water inlet pipe and an acid mist spray pipe communicating with the acid mist pipe, the flushing spray pipe is above the acid mist spray pipe, and the orthographic projections of the two pipes on a horizontal plane are arranged in a staggered manner; the flushing spray pipe is uniformly provided with a plurality of water spray holes along the length direction of the pipe, and the acid mist spray pipe is uniformly provided with a plurality of acid mist spray holes along the length direction of the pipe.
[0009] In an implementation, the flushing water inlet pipe and the acid mist pipe are arranged on opposite side edges of the top of the attenuation tank.
[0010] In an implementation, the flushing spray pipe comprises a plurality of longitudinal long pipes arranged in parallel, and adjacent longitudinal long pipes are connected end to end by transverse short pipes to form a grid-shaped elbow pipe.
[0011] In an implementation, the acid mist spray pipe comprises a plurality of transverse long pipes arranged in parallel, and adjacent transverse long pipes are connected end to end by longitudinal short pipes to form a grid-shaped elbow pipe; the transverse long pipes are perpendicular to the longitudinal long pipes.
[0012] In an implementation, the top of the attenuation tank is provided with an exhaust hole, the exhaust hole is provided with an exhaust pipe, and the exhaust pipe is provided with an exhaust valve.
[0013] In an implementation, the top of the attenuation tank is provided with an exhaust hole, and the exhaust hole is provided with a sealing cover for opening and closing the exhaust hole.
[0014] The vinegar attenuation reaction box has the advantages that: the solution box for containing vinegar solution is added on the basis of the attenuation box for containing battery pieces, the battery pieces are separated from the vinegar solution, the battery pieces are placed in the attenuation box and cannot directly contact the vinegar solution, meanwhile, the grid is arranged at the bottom of the attenuation box to separate the battery pieces from the vinegar solution condensed and dropped to the bottom of the attenuation box, the vinegar mist is diffused from the top of the battery piece to the bottom, the grid lines on the battery piece are corroded and attenuated, and the uniformity of the vinegar mist distribution in the attenuation box is improved; the flushing water inlet pipe is arranged at the top of the attenuation box, the vinegar mist is stopped from being introduced into the attenuation box after the attenuation in the attenuation box reaches the preset time, the flushing water inlet pipe is opened at the same time, and the battery piece is flushed, the residual vinegar solution on the battery piece is flushed away, the flushing water and the flushed vinegar solution also flow into the space at the bottom of the attenuation box through the grid and cannot contact the battery piece, the problem that the local excessive etching of the battery piece affects the accuracy of the reliability test result is avoided, and the accuracy of the reliability test result of the battery piece attenuation test is improved; after the vinegar mist meets the battery piece and is condensed, the battery piece can be downwardly dropped into the space below the grid through the grid, the battery piece cannot directly contact the vinegar solution, the risk of the residual vinegar solution on the battery piece is greatly avoided, and the problem that the local excessive etching of the battery piece affects the accuracy of the reliability test result is avoided; BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 A structure schematic view of the vinegar attenuation reaction box is provided for the utility model embodiment;
[0016] Figure 2 A structure schematic view of the acid mist spraying pipe is provided for the utility model embodiment;
[0017] Figure 3 A structure schematic view of the flushing spraying pipe is provided for the utility model embodiment;
[0018] Figure 4 A structure schematic view of the grid is provided for the utility model embodiment;
[0019] BRIEF DESCRIPTION OF DRAWINGS
[0020] 1, attenuation box; 2, control valve; 3, flushing water inlet pipe; 4, exhaust hole; 5, acid mist pipe; 6, waste liquid recovery discharge pipe; 7, grid; 8, solution box; 9, acid mist spraying pipe; 91, horizontal long pipe; 92, vertical short pipe; 93, acid mist spraying hole; 10, flushing spraying pipe; 101, vertical long pipe; 102, horizontal short pipe; 103, water spraying hole. DETAILED DESCRIPTION
[0021] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer, the utility model will be explained in further detail below in combination with the drawings and examples.
[0022] Please refer to Figures 1 to 4 The utility model provides an acetic acid attenuation reaction box, which comprises an attenuation box 1, a solution tank 8 and a flushing water inlet pipe 3.
[0023] The utility model provides an acetic acid attenuation reaction box, which has the beneficial effects that: on the basis of the attenuation box 1 for containing battery pieces, the solution tank 8 for containing acetic acid solution is added, so that the battery pieces and the acetic acid solution are separated, the battery pieces are placed in the attenuation box 1 and cannot directly contact the acetic acid solution; meanwhile, the grid 7 is arranged at the bottom of the attenuation box 1 to separate the battery pieces from the acetic acid solution condensed and dropped to the bottom of the attenuation box 1, the acetic acid mist is allowed to escape downward from the top of the battery pieces to corrode and attenuate the grid lines on the battery pieces, so that the uniformity of the distribution of the acetic acid mist in the attenuation box 1 is improved; the flushing water inlet pipe 3 is arranged at the top of the attenuation box 1, after the attenuation in the attenuation box 1 reaches the preset time, the supply of the acetic acid mist into the attenuation box 1 is stopped, and the flushing water inlet pipe 3 is opened to flush the battery pieces, so that the acetic acid solution remaining on the battery pieces can be flushed away; the flushing water and the flushed acetic acid solution also flow into the space at the bottom of the attenuation box 1 through the grid 7 and cannot contact the battery pieces, so that the problem of the local over-etching of the battery pieces affecting the accuracy of the reliability test results is avoided, and the accuracy of the reliability test results of the battery piece attenuation test is improved; after the acetic acid mist meets and condenses the battery pieces, the acetic acid mist can drop into the space below the grid 7 along the battery pieces and through the grid 7, so that the battery pieces not only cannot directly contact the acetic acid solution, but also can greatly avoid the risk of the acetic acid solution remaining on the battery pieces, thereby avoiding the problem of the local over-etching of the battery pieces affecting the accuracy of the reliability test results.
[0024] Optionally, the grid 7 can also be a through hole uniformly arranged on an acid-resistant plate, the shape of the through hole can be a round hole, a rectangular hole or other polygonal hole, and the battery piece placing rack or placing table is supported by the grid 7.
[0025] In some examples, referring to Figure 1As shown, the solution tank 8 is integrated below the attenuation tank 1, reducing the space volume occupied by the reaction tank.
[0026] In some embodiments, referring to Figure 1 As shown, the bottom of the attenuation tank 1 is provided with a waste liquid recovery discharge pipe 6. The acetic acid solution flowing to the bottom of the attenuation tank 1 will mix with grid line metals such as silver, aluminum and other elements due to the corrosion of the grid lines on the battery sheet, and will form waste acetic acid solution due to water washing and dilution. Therefore, the acetic acid solution can be recovered and reused after being recovered and treated through the waste liquid recovery discharge pipe 6, reducing material waste.
[0027] In some embodiments, referring to Figure 1 , Figure 2 and Figure 3 As shown, the top of the attenuation tank 1 is provided with a flushing spray pipe 10 communicating with the flushing water inlet pipe 3 and an acid mist spray pipe 9 communicating with the acid mist pipe 5. The flushing spray pipe 10 is located above the acid mist spray pipe 9, and the orthographic projections of the two pipes on the horizontal plane are arranged in a staggered manner. The flushing spray pipe 10 is uniformly provided with a plurality of water spray holes 103 along the length direction of the pipe, and the acid mist spray pipe 9 is uniformly provided with a plurality of acid mist spray holes 93 along the length direction of the pipe. The flushing spray pipe 10 and the acid mist spray pipe 9 are both for the purpose of improving the uniformity of water or acetic acid mist spraying. The flushing spray pipe 10 is above the acid mist spray pipe 9, which can avoid the direct spraying of acetic acid mist from the acid mist spray pipe 9 to the flushing spray pipe 10, thereby preventing the corrosion of the flushing spray pipe 10.
[0028] In some embodiments, referring to Figure 1 As shown, the flushing water inlet pipe 3 and the acid mist pipe 5 are separately arranged on the opposite side edges of the top of the attenuation tank 1. The control valve 2 is arranged on each of the flushing water inlet pipe 3 and the acid mist pipe 5.
[0029] In some embodiments, referring to Figure 3 As shown, the flushing spray pipe 10 includes a plurality of longitudinally long pipes 101 arranged in parallel, and adjacent longitudinally long pipes 101 are connected end to end through transversely short pipes 102 to form a grid-shaped elbow pipe. The flushing spray pipe 10 is designed in the shape of a grid-shaped elbow pipe, which improves the flushing length and distribution area of the flushing spray pipe 10 in a limited area, so that the sprayed water can be uniformly sprayed onto the battery sheet, and the acetic acid residue on the surface of the battery can be better removed, thereby increasing the accuracy of the acetic acid attenuation test and having important significance for the reliability test of the battery and the assembly.
[0030] Optionally, the flushing spray pipe 10 includes a flushing main pipe and a plurality of flushing branch pipes connected in parallel to the flushing main pipe. The flushing branch pipes are arranged in parallel, for example, the flushing main pipe is arranged on one side of the flushing water inlet pipe 3, the flushing branch pipes are arranged in the longitudinal direction and consistent with the trend of the longitudinally long pipes 101, and the flushing main pipe is perpendicular to the flushing branch pipes.
[0031] In some embodiments, referring to Figure 2 As shown in the figure, the acid mist spray pipe 9 comprises a plurality of transverse long pipes 91 arranged in parallel, adjacent transverse long pipes 91 are connected end to end by longitudinal short pipes 92 to form a grid-shaped elbow pipe; the transverse long pipe 91 is perpendicular to the longitudinal long pipe 101. Similarly, this design of the acid mist spray pipe 9 increases the length in a limited area, and also expands the distribution area of the acid mist spray hole 93, so that the homogenization degree of the acetic acid mist can be greatly achieved, and the accuracy of the test result of the battery piece attenuation test is improved.
[0032] In some embodiments, referring to Figure 1 As shown in the figure, the top of the attenuation box 1 is provided with an exhaust hole 4, the exhaust hole 4 is provided with an exhaust pipe, and the exhaust pipe is provided with an exhaust valve. The acetic acid mist is introduced into the attenuation box 1 by heating, and the air in the attenuation box 1 is exhausted. After a preset time, the air is exhausted, the exhaust valve is closed, and the test is performed again.
[0033] In some embodiments, referring to Figure 1 As shown in the figure, the top of the attenuation box 1 is provided with an exhaust hole 4, the exhaust hole 4 is provided with an exhaust pipe, and the exhaust pipe is provided with an exhaust valve. The acetic acid mist is introduced into the attenuation box 1 by heating, and the air in the attenuation box 1 is exhausted. After a preset time, the air is exhausted, the exhaust valve is closed, and the test is performed again.
[0034] It is explained that the sealing cover is not drawn in the figure, but the sealing cover can adopt a conventional design, for example, a rotating shaft and a torsional spring can be used to install on the top of the attenuation box to flip and open, and the sealing cover can be directly made of plastic or rubber material to block the exhaust hole.
[0035] The test process of the present application is as follows:
[0036] The utility model adopts the way that the solution tank 8 and the attenuation box 1 are separate, the top of the attenuation box 1 is provided with acid mist spray pipe 9 that interlaces vertically and horizontally, the diameter of acid mist spray hole 93 on acid mist spray pipe 9 is controlled at 0.01-0.1mm, the top of acid mist spray pipe 9 is flushing spray pipe 10, flushing water inlet pipe 3 is connected with pure water tank (the pure water requirement is secondary water, and the conductivity is greater than or equal to 18MΩ.cm), and the inductive stop valve is arranged on flushing water inlet pipe 3 and acid mist spray pipe 9; 2-4 exhaust holes 4 are arranged on the top of attenuation box 1; the attenuation box 1 is provided with mesh-shaped acetic acid resistant grid 7 at the bottom, the grid 7 buckle is arranged at 10-20mm from the bottom of the attenuation box 1 to support the grid 7; the side wall of the attenuation box 1 can be opened, and the battery piece is convenient to put in and take out.
[0037] When the attenuation box 1 and the solution box 8 are placed in the oven and the heating is started, the inductive stop valve on the acid mist pipe 5 is opened, the acetic acid mist passes through the acid mist pipe 5 and the acid mist spray pipe 9 into the attenuation box 1, and the air in the main attenuation box 1 is discharged, and the process lasts for 30-300s; the top exhaust hole 4 is closed, the inductive stop valve on the flushing water inlet pipe 3 remains closed at this time, the inductive stop valve on the acid mist pipe 5 is closed after the heating is finished; the inductive stop valve on the flushing water inlet pipe 3 is opened within 5s, the pure water spraying is started, and is maintained for 10-60s to be closed; the battery piece is taken out, placed in a dryer to room temperature, and then subsequent experimental tests can be carried out.
[0038] The application has the advantages that due to the long acid mist spray pipe 9 and the uniform distribution of the acid mist spray holes 93, the acid mist is more uniformly diffused; meanwhile, the flushing spray pipe 10 after the reaction is finished uniformly sprays water to remove the residual acetic acid, avoids causing secondary corrosion to affect the experimental results, and thus the acetic acid attenuation can be more accurately measured, and the reliability test of the battery and the assembly has important significance.
[0039] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.
[0040] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. An acetic acid decay reaction chamber, characterized in that, include: The attenuation chamber (1) has a grid (7) at its bottom for dripping acetic acid solution for condensation, and there is a space between the grid (7) and the bottom of the attenuation chamber (1) that can accommodate the acetic acid solution. An acid mist pipe (5) is provided between the solution tank (8) and the attenuation tank (1) so that the acetic acid mist formed in the solution tank (8) enters the attenuation tank (1) through the acid mist pipe (5); and A flushing inlet pipe (3) is installed on top of the attenuation box (1) to flush the battery cells inside the attenuation box (1).
2. The acetic acid decay reaction chamber as described in claim 1, characterized in that, The solution tank (8) is integrated below the attenuation tank (1).
3. The acetic acid decay reaction chamber as described in claim 1, characterized in that, The bottom of the attenuation box (1) is provided with a waste liquid recovery and discharge pipe (6).
4. The acetic acid decay reaction chamber as described in claim 1, characterized in that, The top of the attenuation box (1) is provided with a flushing spray pipe (10) connected to the flushing water inlet pipe (3) and an acid mist spray pipe (9) connected to the acid mist pipe (5). The flushing spray pipe (10) is located above the acid mist spray pipe (9), and the two are arranged in a staggered manner with their orthogonal projections on the horizontal plane. The flushing spray pipe (10) has a number of water spray holes (103) evenly distributed along the length of the pipe, and the acid mist spray pipe (9) has a number of acid mist spray holes (93) evenly distributed along its length.
5. The acetic acid decay reaction chamber as described in claim 4, characterized in that, The flushing water inlet pipe (3) and the acid mist pipe (5) are respectively located on opposite sides of the top of the attenuation box (1).
6. The acetic acid decay reaction chamber as described in claim 4, characterized in that, The flushing spray pipe (10) includes multiple parallel longitudinal pipes (101), and adjacent longitudinal pipes (101) are connected end to end by transverse short pipes (102) to form a grid-shaped bend.
7. The acetic acid decay reaction chamber as described in claim 6, characterized in that, The acid mist spray pipe (9) includes multiple parallel horizontal long pipes (91), and the adjacent horizontal long pipes (91) are connected end to end by longitudinal short pipes (92) to form a grid-shaped bend; the horizontal long pipes (91) are perpendicular to the longitudinal long pipes (101).
8. The acetic acid decay reaction chamber as described in claim 1, characterized in that, The top of the attenuation box (1) is provided with an exhaust hole (4), an exhaust pipe is provided on the exhaust hole (4), and an exhaust valve is provided on the exhaust pipe.
9. The acetic acid decay reaction chamber as described in claim 1, characterized in that, The top of the attenuation box (1) is provided with an exhaust port (4), and the exhaust port (4) is provided with a sealing cover for opening and closing the exhaust port (4).