CN214226886U - Solar cell etching device and preparation system - Google Patents
Solar cell etching device and preparation system Download PDFInfo
- Publication number
- CN214226886U CN214226886U CN202120646260.1U CN202120646260U CN214226886U CN 214226886 U CN214226886 U CN 214226886U CN 202120646260 U CN202120646260 U CN 202120646260U CN 214226886 U CN214226886 U CN 214226886U
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- etching
- solar cell
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- groove
- storage
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- 238000005530 etching Methods 0.000 title claims abstract description 145
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 91
- 238000003860 storage Methods 0.000 claims abstract description 61
- 239000002699 waste material Substances 0.000 claims abstract description 21
- 238000002637 fluid replacement therapy Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000001802 infusion Methods 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 36
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 101100518501 Mus musculus Spp1 gene Proteins 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 description 1
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 description 1
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Weting (AREA)
- Photovoltaic Devices (AREA)
Abstract
The utility model provides a solar cell etching device and preparation system, the etching device include multistage sculpture groove and respectively with at different levels the sculpture groove matches a plurality of holding tanks that set up, wherein: the etching grooves in multiple stages are sequentially arranged along the running direction of the battery piece, and the etching grooves in all stages are communicated with the matched storage grooves, so that etching liquid can circularly flow between the etching grooves in one stage and the storage grooves; the storage tanks at different levels are sequentially communicated with each other and are all communicated with a waste liquid pipeline, and when the etching liquid in the storage tanks exceeds a preset threshold value, the etching liquid can be discharged to the next storage tank and/or the waste liquid pipeline. The device is provided with a plurality of stages of etching grooves, and the etching liquid in the previous stage of etching groove can overflow into the next stage of etching groove through a storage groove matched with the etching liquid, but is not directly discharged, so that the utilization rate of the etching liquid can be effectively increased. The method can save the liquid medicine, reduce the discharge of acid-containing wastewater and is beneficial to environmental protection.
Description
Technical Field
The utility model relates to a solar cell sculpture field especially relates to a solar cell sculpture device and preparation system.
Background
The etching is a necessary process for manufacturing the solar cell, and is used for removing the PSG layer and the edge pn junction formed in the previous diffusion process, avoiding forming a leakage channel at the edge, increasing the parallel resistance of the cell, and simultaneously properly polishing the back surface of the cell, thereby being beneficial to improving the conversion efficiency of the cell. On current PERC equipment, in order to reach the sculpture polishing effect, can set up a longer, holistic sculpture groove, the liquid medicine concentration in the whole cell body is even, avoids the destruction of etching solution to the battery is positive simultaneously, can cover the one deck water film before the sculpture goes on at the battery openly to the protection battery is positive.
However, in the working process of the existing etching groove, the water film can fall off due to shaking or poor roller level when the cell is conveyed, which is equivalent to continuously supplementing pure water into the etching solution, and the etching solution can be diluted, thereby increasing the consumption of the etching solution. And continuous liquid supplement also causes that a large amount of liquid medicine is discharged from the overflow pipeline without participating in reaction, thereby causing unnecessary waste.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solar cell etching device for effectively promote the utilization ratio of sculpture liquid, save the liquid medicine, can also reduce simultaneously and contain sour wastewater discharge, reduce cost, solar cell etching device include multistage sculpture groove and respectively with at different levels the sculpture groove matches a plurality of holding tanks that set up, wherein:
the etching grooves in multiple stages are sequentially arranged along the running direction of the battery piece, and the etching grooves in all stages are communicated with the matched storage grooves, so that etching liquid can circularly flow between the etching grooves in one stage and the storage grooves;
the storage tanks at different levels are sequentially communicated with each other and are all communicated with a waste liquid pipeline, and when the etching liquid in the storage tanks exceeds a preset threshold value, the etching liquid can be discharged to the next storage tank and/or the waste liquid pipeline.
In specific implementation, each stage of etching groove is communicated with the corresponding stage of storage groove through a first pipeline and a second pipeline, so that etching liquid can circulate between the etching groove and the storage groove.
In specific implementation, the lengths of the etching grooves at each stage are gradually decreased along the moving direction of the solar cell.
In specific implementation, the concentration of the etching liquid in each stage of etching groove is decreased progressively along the moving direction of the solar cell.
In specific implementation, the solar cell etching device comprises two stages of etching grooves.
In specific implementation, the solar cell etching device further comprises a liquid inlet pipeline, and the liquid inlet pipeline is respectively communicated with each storage groove so as to replenish etching liquid to each storage groove.
In specific implementation, the solar cell etching device comprises a plurality of liquid inlet pipelines, and the number of the liquid inlet pipelines is matched with the component number of the etching liquid.
In specific implementation, valves are arranged between the storage tank and the liquid inlet pipeline and between the storage tank and the waste liquid pipeline.
In specific implementation, the length of each etching groove is greater than or equal to that of the solar cell.
The utility model also provides a solar cell's preparation system, include solar cell sculpture device.
The utility model provides a solar cell etching device, including multistage sculpture groove and respectively with the sculpture groove at different levels match a plurality of holding tanks that set up: the multi-stage etching grooves are sequentially arranged along the running direction of the battery piece, and all the stages of etching grooves are communicated with the matched storage grooves, so that the etching liquid can circularly flow between the etching grooves in one stage and the storage grooves; the storage tanks at different levels are sequentially communicated, and each storage tank is communicated with the waste liquid pipeline, so that after the etching liquid in the storage tank exceeds a preset threshold value, the etching liquid can be discharged to the next storage tank and/or the waste liquid pipeline. The device is provided with a plurality of stages of etching grooves, and the etching liquid in the previous stage of etching groove can overflow into the next stage of etching groove through a storage groove matched with the etching liquid, but is not directly discharged, so that the utilization rate of the etching liquid can be effectively increased. The method can save the liquid medicine, reduce the discharge of acid-containing wastewater, reduce the cost and have extremely high application value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts. In the drawings:
fig. 1 is a schematic structural diagram of a solar cell etching apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
As shown in fig. 1, the utility model provides a solar cell etching device for effectively promote the utilization ratio of sculpture liquid, save the liquid medicine, can also reduce simultaneously and contain sour waste water discharge, reduce cost, solar cell etching device include multistage sculpture groove 10 and respectively with at different levels a plurality of holding tanks 20 that sculpture groove 10 matches the setting, wherein:
the etching grooves 10 in multiple stages are sequentially arranged along the running direction of the battery piece, and the etching grooves 10 in all stages are communicated with the storage grooves 20 matched with each other, so that etching liquid can circularly flow between the etching grooves 10 in one stage and the storage grooves 20;
the storage tanks 20 at all levels are sequentially communicated with each other and are all communicated with a waste liquid pipeline 30, and when the etching liquid in the storage tank 20 exceeds a preset threshold value, the etching liquid can be discharged to the next storage tank 20 and/or the waste liquid pipeline 30.
In specific implementation, the length of each etching groove 10 can be set in various embodiments. For example, in order to ensure that the solar cell can fully react with the etching solution when entering the etching device, the lengths of the etching grooves 10 arranged in front of the etching device can be lengthened, that is, the lengths of the etching grooves 10 at each stage can be gradually decreased along the moving direction of the solar cell, which is beneficial to the reaction. As shown in fig. 1, a plurality of continuous etching grooves 10 are provided, the lengths of the grooves along the moving direction of the solar cell can be respectively L1, L2, L3, … … Ln (L is the length of the groove), and n is an integer greater than one.
In specific implementation, the concentration of the etching solution in each stage of the etching tank 10 may be set in various embodiments. For example, in order to facilitate the reaction of the solar cell, the concentration of the etching solution in each stage of the etching groove 10 may decrease along the moving direction of the solar cell.
In particular implementations, the number of stages of etching the trench 10 may be set in various embodiments. For example, to simplify the overall structure, the solar cell etching apparatus may include two stages of the etching grooves 10. The length of the two-stage etching groove 10 is L1> L2, and the concentration is eta 1> eta 2 (eta is the concentration of the etching solution). For another example, as shown in fig. 1, the solar cell etching apparatus may include three stages of the etching grooves 10.
In a specific implementation, as shown in fig. 1, in order to effectively replenish the etching liquid, the solar cell etching apparatus further includes a liquid replenishing pipeline 40, and the liquid replenishing pipeline 40 may be respectively communicated with each of the storage tanks 20 to replenish the etching liquid to each of the storage tanks 20.
In specific implementation, the number of the liquid replenishing pipelines 40 can be set in various embodiments, for example, the solar cell etching device includes a plurality of the liquid replenishing pipelines 40, and the number of the liquid replenishing pipelines 40 matches with the number of the components of the etching liquid. For example, if the etching solution has three components, three sets of fluid replacement pipes 40 are required.
In a specific implementation, in order to facilitate controlling the liquid inlet and waste liquid discharge of the device, valves may be disposed between the storage tank 20 and the liquid replenishing pipeline 40 and between the storage tank and the waste liquid pipeline 30.
In one embodiment, the silicon wafer may be run from right to left, as shown in FIG. 1.
For example, the apparatus may be provided with a 3-stage etching tank 10, the lengths of the tank bodies are L1, L2 and L3 from right to left, and the concentrations of the chemical solutions are η 1, η 2 and η 3 from right to left.
The primary etching tank 10 is communicated with a storage tank 20 through a first pipeline 21 and a second pipeline 22, and etching liquid can circulate in the two tank bodies. The etching liquid in the storage tank 20 reaches the warning liquid level (set threshold value) and then overflows to the storage tank 20 of the secondary etching tank 10 through a third pipeline 23.
The secondary etching tank 10 is communicated with a storage tank 20 through a first pipeline 21 and a second pipeline 22, and etching liquid can circulate in the two tank bodies. The etching liquid in the storage tank 20 overflows to the storage tank 20 of the three-stage etching tank 10 through a third pipeline 23 after reaching the warning liquid level.
The three-stage etching tank 10 is communicated with a storage tank 20 through a first pipeline 21 and a second pipeline 22, and etching liquid can circulate in the two tank bodies. The etching liquid in the storage tank 20 overflows to the waste liquid pipe 30 through the fourth pipe 24 after reaching the warning liquid level.
The liquid replenishing pipe 40 is communicated with the storage tanks 20 of each stage through a plurality of fifth pipes 25, respectively, to replenish the new liquid. It should be noted that the number of fluid replacement lines 40 is related to the number of fluid components, e.g., three components, and three sets of fluid replacement lines 40 are required.
The waste liquid pipe 30 is connected to the storage tanks 20 of each stage through a plurality of fourth pipes 24, respectively, and when each storage tank 20 reaches a threshold value, direct discharge of waste liquid may be performed through the waste liquid pipe 30.
In specific implementation, in order to ensure that the reaction of the solar cell is sufficient, the lengths of the etching grooves 10 at each stage may be greater than or equal to the length of the solar cell.
The utility model also provides a solar cell's preparation system, include solar cell sculpture device.
To sum up, the utility model provides a solar cell etching device, including multistage sculpture groove 10 and respectively with the sculpture groove 10 at different levels match a plurality of holding tanks 20 that set up: the multistage etching grooves 10 are sequentially arranged along the running direction of the battery piece, and each stage of etching groove 10 is communicated with the matched storage groove 20, so that the etching liquid can circularly flow between the etching groove 10 and the storage groove 20 in one stage; the storage tanks 20 at different levels are sequentially communicated, and the storage tanks 20 are all communicated with the waste liquid pipeline 30, so that when the etching liquid in the storage tanks 20 exceeds a preset threshold value, the etching liquid can be discharged to the next storage tank 20 and/or the waste liquid pipeline 30. The device is provided with a plurality of stages of etching grooves 10, and the etching liquid of the previous stage of etching groove 10 can overflow into the next stage of etching groove 10 through a storage groove 20 matched with the etching liquid, but not be directly discharged, so that the utilization rate of the etching liquid can be effectively increased. The method can save the liquid medicine, reduce the discharge of acid-containing wastewater, reduce the cost and have extremely high application value.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a solar cell etching device, which characterized in that, solar cell etching device includes multistage etching groove (10) and respectively with each level a plurality of holding tanks (20) that etching groove (10) match the setting, wherein:
the multistage etching grooves (10) are sequentially arranged along the running direction of the cell, and each stage of etching groove (10) is communicated with the matched storage groove (20) so that etching liquid can circularly flow between the etching groove (10) and the storage groove (20) in one stage;
the storage tanks (20) at different levels are sequentially communicated and are all communicated with a waste liquid pipeline (30), and when etching liquid in the storage tanks (20) exceeds a preset threshold value, the etching liquid can be discharged to the next storage tank (20) and/or the waste liquid pipeline (30).
2. The solar cell etching apparatus according to claim 1, wherein each stage of the etching tank (10) communicates with the storage tank (20) of the corresponding stage through a first pipe (21) and a second pipe (22) to enable circulation of the etching liquid between the etching tank (10) and the storage tank (20).
3. The solar cell etching device according to claim 1, wherein the length of the etching groove (10) in each stage decreases along the moving direction of the solar cell.
4. The solar cell etching device according to claim 1, wherein the concentration of the etching solution in each stage of the etching groove (10) decreases progressively along the moving direction of the solar cell.
5. The solar cell etching apparatus according to claim 1, wherein the solar cell etching apparatus comprises two stages of the etching grooves (10).
6. The solar cell etching apparatus according to claim 1, further comprising a liquid replenishing pipe (40), wherein the liquid replenishing pipe (40) is respectively communicated with the storage tanks (20) to replenish the etching liquid to the storage tanks (20).
7. The solar cell etching device according to claim 6, comprising a plurality of the fluid replacement pipes (40), wherein the number of the fluid replacement pipes (40) is matched with the number of components of the etching solution.
8. The solar cell etching apparatus according to claim 6, wherein valves are disposed between the storage tank (20) and the fluid infusion pipe (40) and the waste liquid pipe (30).
9. The solar cell etching device according to claim 1, wherein the length of each etching groove (10) is greater than or equal to the length of a solar cell.
10. A solar cell production system comprising the solar cell etching apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120646260.1U CN214226886U (en) | 2021-03-30 | 2021-03-30 | Solar cell etching device and preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120646260.1U CN214226886U (en) | 2021-03-30 | 2021-03-30 | Solar cell etching device and preparation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214226886U true CN214226886U (en) | 2021-09-17 |
Family
ID=77694054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120646260.1U Active CN214226886U (en) | 2021-03-30 | 2021-03-30 | Solar cell etching device and preparation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214226886U (en) |
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2021
- 2021-03-30 CN CN202120646260.1U patent/CN214226886U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314417 No. 1 Jisheng Road, Jiaxing City, Zhejiang Province Patentee after: Zhengtai Xinneng Technology Co.,Ltd. Address before: 314417 No. 1 Jisheng Road, Jiaxing City, Zhejiang Province Patentee before: HAINING ASTRONERGY TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314417 No. 1 Jisheng Road, Jiaxing City, Zhejiang Province Patentee after: Zhengtai Xinneng Technology Co.,Ltd. Address before: 314417 No. 1 Jisheng Road, Jiaxing City, Zhejiang Province Patentee before: Zhengtai Xinneng Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |