CN115055284A - Solar cell panel electrostatic dust removal system based on flexible electrode - Google Patents
Solar cell panel electrostatic dust removal system based on flexible electrode Download PDFInfo
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- CN115055284A CN115055284A CN202210644567.7A CN202210644567A CN115055284A CN 115055284 A CN115055284 A CN 115055284A CN 202210644567 A CN202210644567 A CN 202210644567A CN 115055284 A CN115055284 A CN 115055284A
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- 239000000428 dust Substances 0.000 title claims abstract description 74
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 230000006698 induction Effects 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000012717 electrostatic precipitator Substances 0.000 claims 4
- 239000012716 precipitator Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 239000002956 ash Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000000231 atomic layer deposition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/743—Cleaning the electrodes by using friction, e.g. by brushes or sliding elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
Abstract
The invention discloses a solar cell panel electrostatic dust removal system based on a flexible electrode. The flexible electrode supporting rod is driven by a linear stepping motor to drive the flexible conductive electrode to extend upwards to be parallel to the solar cell panel or contract downwards to enable the flexible conductive electrode to be rolled up at the bottom of the solar cell panel. The dust removal brush is located the solar cell panel bottom, contacts with flexible conductive electrode, clears away its surface dust when flexible conductive electrode rolls up downwards, and the dust of clearing away falls into in the ash bucket. The invention has the advantages that: the electrostatic dust removal system can achieve a good dust removal effect on the surface of the solar cell panel.
Description
Technical Field
The invention relates to the technical field of electrostatic dust removal, in particular to a solar cell panel electrostatic dust removal system based on a flexible electrode.
Background
Solar energy is regarded as a green pollution-free renewable energy source and is valued by countries all over the world, and the solar photovoltaic industry of China is developing vigorously. With the vigorous popularization of new energy in China, a plurality of solar photovoltaic power stations are built all over the country, and a plurality of photovoltaic power stations are built in arid regions. Although the arid regions have sufficient sunlight and long sunshine time and provide good conditions for the utilization of solar energy, the regions have the problems of serious dust and sand problems, lack of precipitation and the like. Therefore, solar photovoltaic power stations built in arid regions face two major problems: firstly, the surface of the solar cell panel is easy to accumulate dust due to serious dust and sand problems, and the photoelectric conversion efficiency of the solar cell panel is greatly influenced; secondly, lack the precipitation and lead to unable utilization water resource to remove dust to solar cell panel surface, and the manual cleaning has the scheduling problem that wastes time and energy, with high costs. Therefore, the research and development of the waterless automatic dust removal technology for the solar cell panel is of great significance.
In order to realize the anhydrous automatic dust removal of the solar cell panel, the current main research directions can be divided into the following types: 1) unmanned sweeping (mechanical dust removal is carried out by using unmanned equipment instead of manpower); 2) surface coating (coating the outer surface of the battery plate to change the surface property of the battery plate); 3) electrostatic dust removal (the surface of a cell panel generates static electricity to make dust negatively charged).
Electrostatic dust removal is an important way for solar panels to remove dust. It mainly comprises the following steps: 1) embedding the parallel wires into a glass cover plate of the solar cell panel; 2) the surface of the solar panel is coated with a nano conductive layer, and the other electrode is arranged on the surface of the solar panel. The main mechanism is to use a crossed microelectrode array embedded in a dielectric film or to install an insulated copper mesh electrode on the surface of the solar cell panel. After the electrodes are activated, the electric field pushes dust particles through weak, short-range electrophoresis and/or weak, passive triboelectric charging, and the dust particles slide down the solar cell panel under the combined action of gravity. But over time moisture invades the dielectric film and moisture build-up can eventually lead to electrode shorts and system failures. Furthermore, commercial implementation of embedded interdigitated microelectrode arrays is costly due to the costs associated with microfabrication. In the case of the interdigital copper electrode, a significant shadow is generated on the solar surface, and the power generation efficiency is affected. Therefore, there is a need to develop a new electrostatic dust removal method to overcome the problems of electrical short, high cost and surface shadow.
Disclosure of Invention
The invention aims to provide an electrostatic dust removal system for a solar cell panel. According to the invention, the light-transmitting conductive coating electrode and the flexible conductive electrode form the induction electrode and the dust collection electrode of the electrostatic electrode, so that the induction charge and the electrostatic dust collection of dust on the solar cell panel are realized. The flexible conductive electrode can realize the working cycle of automatic unfolding at night and automatic rolling up at daytime, and shadow is avoided from being generated when the solar cell panel works.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a solar cell panel electrostatic dust removal system based on a flexible electrode, which is characterized by comprising the following components: the device comprises a direct-current high-voltage power supply, a solar cell panel, a light-transmitting conductive coating electrode, a flexible conductive electrode, a flexible electrode supporting rod, a linear stepping motor and a dust removal brush; ash bucket, direct current voltage polarity switching device.
Furthermore, the transparent conductive coating electrode and the flexible conductive electrode form an induction electrode and a dust collection electrode of the electrostatic electrode, and the induction charging and the electrostatic dust collection of dust on the solar cell panel are realized under the action of a direct-current high-voltage power supply and a direct-current voltage polarity switching device.
Furthermore, the light-transmitting conductive coating electrode has good conductivity, light transmission and refraction resistance, and can be tightly combined with the surface of the solar cell panel.
Furthermore, the flexible conductive electrode has good conductivity, mechanical strength and flexibility, and is light and durable. The flexible conductive electrode can realize the working cycle of regularly unfolding at night and regularly rolling up at daytime, and shadow is avoided from being generated when the solar cell panel works at daytime.
Furthermore, the flexible electrode supporting rod is driven by a linear stepping motor to drive the flexible conductive electrode to extend upwards to be parallel to the solar cell panel or contract downwards to enable the flexible conductive electrode to be rolled up at the bottom of the solar cell panel.
Furthermore, the dust removal brush is located the solar cell panel bottom, contacts with flexible conductive electrode, clears away its surface dust when flexible conductive electrode rolls up downwards, and the dust of clearing away falls into in the ash bucket.
The invention has the beneficial effects that:
1) according to the invention, the light-transmitting conductive coating electrode and the flexible conductive electrode form the induction electrode and the dust collection electrode of the electrostatic electrode, so that the induction charge and the electrostatic dust collection of dust on the solar cell panel are realized;
2) according to the invention, the electrode is made of flexible materials, so that the electrode can be coiled and stored, the space required by electrode storage is greatly reduced, the efficient utilization of the space is realized, and the shielding of a solar cell panel is avoided;
3) compared with the traditional electrode moving method of the solar cell panel electrostatic dust removal technology, the electrode material can be curled, and the flexible electrode can fully cover the whole surface of the solar cell panel after being unfolded, so that the method has the advantages of large dust collection area, omnibearing performance, no dead angle, and good dust removal efficiency and effect;
4) in this design, the dust that dust removal back electrode surface carried can be got rid of by the brush of installing at the receiver entry in the material backrush in-process, realizes the autosegregation between dust and the electrode. The separated dust automatically falls into a lower dust hopper to achieve the storage effect;
5) in the dust removal process, the upper flexible electrode and the conductive coating on the surface of the solar cell panel are subjected to dust removal by electrostatic induction, so that the current between the two electrodes is very small, the power consumption is low in the working process, and the economic benefit is better;
6) the flexible electrode support, the motor, the brush and other components are arranged below the solar cell panel frame, so that the occupied space is small, the overall weight is light, and the influence on the solar cell panel frame is small;
7) the arrangement of the sliding rails is less, the moving distance is shorter, and the loss to the motor is smaller; the flexible electrode material is firm and durable and is not easy to damage; the surface conductive coating of the solar cell panel has strong adhesion and is not easy to scratch. The effect can make this equipment have longer maintenance cycle, reduces the fortune maintenance cost.
Drawings
FIG. 1 is a top view of the present invention;
fig. 2 is a side view of the present invention.
As shown in the figure: 1. a direct current high voltage power supply; 2. a solar panel; 3. a light transmissive conductive coated electrode; 4. a flexible conductive electrode; 5. a flexible electrode support rod; 6. a linear stepper motor; 7. a dust removal brush; 8. an ash hopper; 9. DC voltage polarity switching device.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the invention relates to an electrostatic dust removal system for a solar cell panel, which has a specific structure as shown in figures 1 and 2.
The present invention proposes a new electrostatic method to charge the dust and impart a strong coulomb force to repel the dust.
Firstly, coating materials such as nano ZnO, nano aluminum and the like on a glass plate of a solar cell panel layer by layer according to the proportion of 30:1 by adopting an atomic layer deposition method, so that a light-transmitting conducting layer coated with a thickness of 5-10 nanometers is formed on the surface of the glass plate, and the transmittance of the coated glass is ensured to be very close to the transmittance of the original uncoated glass. The light-transmitting conductive layer serves as an induction electrode of the system of the invention.
The graphene-based or carbon nanotube-based flexible conductive electrode is used as a dust collecting electrode of the system, and the flexible conductive electrode has good conductivity, mechanical strength and flexibility, and is light and durable. The flexible conductive electrode is regularly unfolded at night to carry out dust collection work, and the bottom of the solar cell panel is regularly rolled up at daytime, so that shadows are prevented from being generated when the solar cell panel works.
The flexible electrode supporting rods are arranged at the front end and two sides of the flexible electrode, electric wires are arranged inside the flexible electrode supporting rods to supply power to the flexible electrode, the supporting rods are driven by the linear stepping motor, the flexible conductive electrode is driven to be unfolded upwards at regular time at night and to be parallel to the solar cell panel, or the flexible conductive electrode is driven to be folded downwards at regular time at daytime and to be rolled up at the bottom of the solar cell panel.
The transparent conductive coating electrode and the flexible conductive electrode are connected with the output end of the direct-current high-voltage power supply through the direct-current voltage polarity switching device, the polarity of the two electrodes is changed to realize the switching between the electrostatic induction state and the dust collection state, and further the induction charging and the electrostatic dust collection of dust on the solar cell panel are realized.
The fly ash is used as dust to be scattered on the surface of a solar cell polar plate, when sufficient voltage (10-20kV) is applied, dust particles on an electrode of a light-transmitting conductive coating layer accumulate charges due to induction, after the solar cell polar plate works for a period of time (the induction charging time is different according to the thickness of an ash layer and can be set to be 10-20 minutes), the polarity of the electrode is switched, so that the charged particles and the surface of the electrode repel each other, move to a flexible conductive electrode for collecting dust and are trapped.
The dust removal brush is located at the bottom of the solar cell panel, is fixed through the rotating shaft of the flexible conductive electrode and is in contact with the inner surface of the flexible conductive electrode, when the flexible conductive electrode is rolled downwards after dust collection is finished, the brush is used for removing dust on the surface of the flexible conductive electrode, and the removed dust falls into the dust hopper.
The process is repeated for 3-5 times, and the surface of the solar cell panel can be well cleaned.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes, modifications, equivalents and improvements can be made without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a solar cell panel electrostatic precipitator system based on flexible electrode which characterized in that includes following part: the device comprises a direct-current high-voltage power supply (1), a solar cell panel (2), a light-transmitting conductive coating electrode (3), a flexible conductive electrode (4), a flexible electrode supporting rod (5), a linear stepping motor (6), a dust removing brush (7), an ash bucket (8) and a direct-current voltage polarity switching device (9).
2. The solar cell panel electrostatic dust collection system based on the flexible electrode according to claim 1, wherein the light-transmitting conductive coating electrode (3) and the flexible conductive electrode (4) form an induction electrode and a dust collection electrode of the electrostatic electrode, and the induction charging and the electrostatic dust collection of dust on the solar cell panel (2) are realized under the action of the direct-current high-voltage power supply (1) and the direct-current voltage polarity switching device (9).
3. The flexible electrode based solar panel electrostatic precipitator system according to claim 1, wherein the light-transmitting conductive coating electrode (3) has good conductivity, light transmission and refraction resistance, and can be tightly combined with the surface of the solar panel (2); the flexible conductive electrode (4) has good conductivity, mechanical strength and flexibility, and is light and durable.
4. The flexible electrode based solar panel electrostatic precipitator system according to claim 1, wherein the flexible electrode support rod (5) is driven by the linear stepping motor (6) to drive the flexible conductive electrode (4) to extend upwards to be parallel to the solar panel (2) or to shrink downwards to roll up the flexible conductive electrode (4) at the bottom of the solar panel (2).
5. The flexible electrode based solar panel electrostatic precipitator system according to claim 1, wherein the precipitator brush (7) is located at the bottom of the solar panel (2) and contacts with the flexible conductive electrode (4), when the flexible conductive electrode (4) rolls downwards, the surface dust is removed, and the removed dust falls into the dust hopper (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210644567.7A CN115055284B (en) | 2022-06-08 | 2022-06-08 | Solar cell panel electrostatic dust collection system based on flexible electrode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210644567.7A CN115055284B (en) | 2022-06-08 | 2022-06-08 | Solar cell panel electrostatic dust collection system based on flexible electrode |
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| Publication Number | Publication Date |
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| CN115055284A true CN115055284A (en) | 2022-09-16 |
| CN115055284B CN115055284B (en) | 2023-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532734A (en) * | 2022-09-21 | 2022-12-30 | 清华大学 | Self-powered solar panel electrostatic dust collection device and method |
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2022
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| Publication number | Publication date |
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| CN115055284B (en) | 2023-04-28 |
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