CN107560442B - LED anti-light-decay furnace cooling system - Google Patents
LED anti-light-decay furnace cooling system Download PDFInfo
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- CN107560442B CN107560442B CN201710819477.6A CN201710819477A CN107560442B CN 107560442 B CN107560442 B CN 107560442B CN 201710819477 A CN201710819477 A CN 201710819477A CN 107560442 B CN107560442 B CN 107560442B
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Abstract
The invention discloses an LED (light-emitting diode) anti-light-failure furnace cooling system, which comprises a furnace body, wherein a furnace liner is arranged in the furnace body, a cooling aluminum water tank is arranged at the top of the furnace liner, an LED light-emitting module is welded at the bottom of the cooling aluminum water tank, an auxiliary cooling compressed air system and a blower pressurizing air inlet system are respectively arranged on the inner walls of two sides of the furnace liner, a conveying net chain for conveying solar cells to pass through the furnace liner is arranged in the middle of the furnace liner, a water condenser is arranged under the conveying net chain, and a hot air motor for extracting hot air in the furnace liner and adjusting the air draft force is arranged at the bottom of the furnace liner. The invention uses the cooling water of the cooling aluminum water tank to cool the back of the LED light-emitting module, cools the furnace for multiple times, and the temperature in the furnace not only adopts multiple waterway cooling, but also adopts an air cooling system, and the pressurized air inlet pipeline is used for compressed air or cold air to enter, thereby having further cooling effect on the furnace.
Description
Technical Field
The invention relates to the field of hydrogen passivation of photovoltaic cells, in particular to an LED anti-light-failure furnace cooling system.
Background
Solar power generation technology is currently one of the most important renewable energy technologies. The current solar power generation cost is still higher than that of the traditional energy source, and the large-scale application of the solar power generation system is restricted. For this reason, the industry and scientific community have been working on improving the photoelectric conversion efficiency of solar cells and reducing the manufacturing cost of solar cells.
Solar power generation is based on the photovoltaic effect of semiconductor materials. The P-type semiconductor and the N-type semiconductor are contacted to form a PN junction, and a strong internal electric field is generated. Electrons and holes generated by excitation when the semiconductor is irradiated by light are separated by an electric field, and the separated electrons and holes are diffused to the surface in the semiconductor matrix and collected by the electrode, so that electric energy is supplied to the outside. Solar cells therefore place two major demands on the semiconductor material as a substrate, high purity and high integrity. High purity means that the semiconductor material has few impurities; high integrity refers to a high lattice integrity of the semiconductor material. This is because impurities and lattice defects in the semiconductor cause electron and hole recombination loss due to light irradiation, resulting in a decrease in the number of collected carriers and thus a decrease in the photoelectric conversion efficiency of the solar cell.
Solar cells are classified into crystalline silicon solar cells, compound solar cells, organic solar cells, etc., according to semiconductor materials, wherein crystalline silicon solar cells are currently the most mainstream solar cells. This is due to the excellent properties of silicon crystals, one of which is that silicon crystals easily achieve both high purity and high integrity requirements, for example, silicon crystals used in the manufacture of solar cells have a purity of up to 6 or more, 9; monocrystalline silicon is easily produced (although polycrystalline silicon is also used in the manufacture of solar cells).
Even so, the very small amount of impurities and defects in the silicon crystal still have a significant impact on the performance of the solar cell and even restrict further improvement of the cell efficiency. The impurities in the silicon crystal include light element impurities such as oxygen, carbon, nitrogen, etc. (wherein boron and oxygen form a boron-oxygen complex having high recombination activity for electron-hole) in addition to intentionally doped dopants such as boron and phosphorus, and transition metal impurities such as iron, cobalt, nickel, chromium, copper, etc.
Defects in silicon crystals include defects other than intrinsic point defects, particularly grain boundaries, dislocations, and dangling bonds of silicon at the crystal surface, and the like. These impurities and defects act as "killers" for the photo-generated electrons-holes, significantly reducing minority carrier lifetime and thus the conversion efficiency of the solar cell.
The hydrogen element in crystalline silicon plays an important role in solar cells. The hydrogen atoms in the silicon have strong reactivity, and can react with light element impurities and complexes thereof; reacting with boron and phosphorus doping atoms; react with transition metal impurities; is combined with a silicon suspension bond and is concentrated on the surface of the crystal, a crystal boundary and a dislocation area; and even with other hydrogen atoms to form hydrogen molecules, etc. Therefore, the reaction of hydrogen atoms with other impurities and defects can be utilized to deactivate the recombination activity of the recombination centers, and the service life of minority carriers in the silicon crystal is prolonged.
The published literature reports that the method of introducing hydrogen atoms in silicon crystals is as follows:
(1) A silicon nitride film is deposited using a Plasma Enhanced Chemical Vapor Deposition (PECVD) process in the fabrication of solar cells. The hydrogen atoms rich in the silicon nitride film diffuse to the interface of the silicon crystal, so that the silicon dangling bond on the interface is passivated, and the surface recombination rate of the silicon crystal is obviously reduced.
(2) And (5) hydrogen plasma treatment. Hydrogen atoms can be introduced at the near surface of the silicon crystal by immersion in a hydrogen plasma. The problem with these methods, whether they are for depositing silicon nitride films or hydrogen plasma treatments, is that hydrogen can only be introduced near the surface layer of the silicon crystal (typically less than a few microns) and cannot be introduced in the matrix at high concentrations, so that the passivation of impurities and defects inside the solar cell matrix by hydrogen atoms is very weak.
How to realize the introduction of higher concentration hydrogen atoms into the solar cell matrix and maximally utilize the passivation effect of the hydrogen atoms on impurities and defects in the matrix. Therefore, the hydrogen passivation generation method of the unbalanced carrier has important significance for improving the conversion efficiency of the solar cell.
The method for generating the unbalanced carrier comprises the following steps: photo-thermal method, and electric injection method.
During operation of the photothermal method, the LED lamp generates a large amount of heat, and a cooling system capable of cooling the LED lamp and controlling the temperature of the product is required.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an LED anti-light-decay furnace cooling system. The LED anti-light attenuation furnace cooling system enables the solar cell to be controllable in the process of deactivation and anti-attenuation. The LED module has controllable light intensity and controllable battery piece process temperature. The solar cell can be processed at high light intensity and low temperature/low light intensity and high temperature. The controllable range of the actual temperature/light intensity is wider.
In order to solve the defects in the prior art, the technical scheme provided by the invention is as follows: the utility model provides an LED anti-light-decay stove cooling system, includes the furnace body, have the stove courage in the furnace body, the top of stove courage is equipped with the cooling aluminum water tank, the bottom welding of cooling aluminum water tank has LED light-emitting module, be equipped with auxiliary cooling compressed air system and air-blower pressurization air inlet system on the both sides inner wall of stove courage respectively, the middle part of stove courage is equipped with the transport net chain that is used for carrying solar wafer through this stove courage, be equipped with the water condenser under the transport net chain, the bottom of stove courage is equipped with the hot-blast motor that draws out the hot-blast in the stove courage to can adjust the convulsions wind-force.
As an improvement of the cooling system of the LED light attenuation resistant furnace, the inner walls of the two sides of the furnace are respectively provided with an auxiliary heating tube, when the temperature in the furnace needs to be increased, the auxiliary cooling compressed air system and the air blower pressurizing air inlet system are closed, and the auxiliary heating tubes are heated.
As an improvement of the cooling system of the LED anti-light attenuation furnace, the end part of a cooling compressed air pipeline of the auxiliary cooling compressed air system is provided with an air knife capable of adjusting compressed air, and the air knives on the two side walls are obliquely blown to the surface of the solar cell, so that the temperature of the solar cell is directly reduced.
As an improvement of the cooling system of the LED anti-light attenuation furnace, the top of the cavity of the furnace is also provided with a glass interlayer for heat insulation and light transmission, a natural wind circulation cavity is arranged between the glass interlayer and the cooling aluminum water tank, an air inlet of the natural wind circulation cavity is arranged on one side of the furnace, an air outlet pipeline of the natural wind circulation cavity is arranged on the other side of the furnace, an air blower is arranged on the air outlet pipeline of the natural wind circulation cavity, the air blower performs ventilation, natural wind is introduced into the air inlet of the furnace, air flow is generated on the surface of the LED light-emitting module, and the surface of the LED light-emitting module is cooled.
As an improvement of the LED anti-light-failure furnace cooling system, the air blower pressurizing air inlet system uses the air blower with adjustable power to supply fresh air to two sides of the furnace, so that the ambient temperature in the furnace is reduced, and the effect of reducing the temperature of the solar cell is achieved.
As an improvement of the cooling system of the LED light attenuation resistant furnace, a plurality of cooling fins are arranged on the water condenser at intervals, water inlet and outlet ports of the water condenser are all arranged on one side surface of the furnace, the cooling fins increase the uniformity of air draft of the hot air motor, the surface temperature difference of the solar cell is reduced, and the temperature of hot air exhaust is reduced.
As an improvement of the LED anti-light-failure furnace cooling system, the cooling aluminum water tank is connected with the cooling water supply water tank through a cooling water supply pipeline, and the cooling aluminum water tank is connected with the cooling water return tank through a cooling water return pipeline.
As an improvement of the cooling system of the LED anti-light-decay furnace, the LED light-emitting module is welded with the cooling aluminum water tank, is tightly attached, and uses cooling water to cool the back of the LED light-emitting module.
As an improvement of the cooling system of the LED light attenuation resistant furnace, a preheating area, an illumination area and a cooling area are sequentially arranged from a feeding end to a discharging end of the furnace body, a plurality of groups of cooling aluminum water tanks which are mutually communicated are arranged right above the illumination area, a conveying net belt drives solar cells to sequentially pass through the preheating area, the illumination area and the cooling area, the preheating temperature of the solar cells passing through the preheating area is 200-500 ℃, the solar cells pass through the illumination area, the LED cooling aluminum water tanks carry out illumination treatment on the solar cells, and when the temperature of the furnace bladder is reduced to a certain extent, an auxiliary heating pipe carries out auxiliary heating on the furnace bladder.
Compared with the prior art, the invention has the advantages that: the invention uses the cooling water of the cooling aluminum water tank to cool the back of the LED light-emitting module, cools the furnace for multiple times, and the temperature in the furnace not only adopts multiple waterway cooling, but also adopts an air cooling system, and the pressurized air inlet pipeline is used for compressed air or cold air to enter, thereby having further cooling effect on the furnace. The invention also adopts the black teflon bottom plate for absorbing illumination heat, and the black teflon bottom plate can absorb redundant light which does not illuminate on the solar cell, so that the illumination of the LED lamp can not affect the temperature of the furnace greatly, and the furnace is ensured to be in a constant temperature state. The solar energy battery pack cooling device comprises a boiler furnace, a solar energy battery pack cooling device and a solar energy battery pack cooling device.
Drawings
The invention and its advantageous technical effects are described in further detail below with reference to the attached drawings and to the detailed description, wherein:
fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the present invention.
FIG. 3 is a cross-sectional view A-A of FIG. 1 in accordance with the present invention.
Reference numeral name: 1. furnace body 2, furnace courage 3, cooling aluminum water tank 4, LED lighting module 5, auxiliary cooling compressed air system 6, air-blower pressurization air inlet system 7, solar cell 8, conveying net chain 9, water condenser 10, hot air motor 11, auxiliary heating pipe 12, glass interlayer 13, natural wind circulation cavity 14, cooling water supply water tank 15, cooling water return tank 101, preheating zone 102, illumination zone 103, cooling zone.
Detailed Description
The invention will be further described with reference to the drawings and specific examples, to which embodiments of the invention are not limited.
As shown in fig. 1, fig. 2 and fig. 3, an LED anti-light-failure furnace cooling system comprises a furnace body 1, wherein a furnace liner 2 is arranged in the furnace body 1, a cooling aluminum water tank 3 is arranged at the top of the furnace liner 2, an LED light-emitting module 4 is welded at the bottom of the cooling aluminum water tank 3, an auxiliary cooling compressed air system 5 and a blower pressurizing air inlet system 6 are respectively arranged on the inner walls of two sides of the furnace liner 2, a conveying net chain 8 for conveying solar cells 7 through the furnace liner 2 is arranged in the middle of the furnace liner 2, a water condenser 9 is arranged under the conveying net chain 8, and a hot air motor 10 for extracting hot air in the furnace liner and adjusting the air draft and wind power is arranged at the bottom of the furnace liner 2.
Preferably, the inner walls of the two sides of the furnace 2 are also respectively provided with an auxiliary heating pipe 11, and when the temperature in the furnace 2 needs to be raised, the auxiliary cooling compressed air system 5, the blower pressurized air inlet system 6 and the natural wind system are closed, and the auxiliary heating pipes 11 are heated.
Preferably, the end part of the cooling compressed air pipeline of the auxiliary cooling compressed air system 5 is provided with an air knife capable of adjusting compressed air, and the air knives on the two side walls are obliquely blown to the surface of the solar cell 7, so that the temperature of the solar cell 7 is directly reduced.
Preferably, the top of the cavity of the furnace 2 is also provided with a glass interlayer 12 for heat insulation and light transmission, a natural wind circulation cavity 13 is arranged between the glass interlayer 12 and the cooling aluminum water tank 3, an air inlet of the natural wind circulation cavity 13 is arranged on one side of the furnace 2, an air outlet pipeline of the natural wind circulation cavity 13 is arranged on the other side of the furnace 2, an air blower is arranged on the air outlet pipeline of the natural wind circulation cavity 13, the air blower performs ventilation, natural wind is introduced into the air inlet of the furnace 2, air flow is generated on the surface of the LED light-emitting module 4, and the surface of the LED light-emitting module 4 is cooled.
Preferably, the air blower pressurizing air inlet system 6 supplies fresh air to two sides of the furnace 2 by using an air blower with adjustable power, reduces the ambient temperature in the furnace 2, and plays a role in reducing the temperature of the solar cell 7.
Preferably, a plurality of cooling fins are arranged on the water condenser 9 at intervals, water inlet and outlet ports of the water condenser 9 are all arranged on one side surface of the furnace liner 2, the cooling fins increase the uniformity of air draft of the hot air motor 10, the surface temperature difference of the solar cell 7 is reduced, and the temperature of hot air exhaust is reduced.
Preferably, the cooling aluminum water tank 3 is connected with the cooling water supply water tank 14 through a cooling water supply pipeline, and the cooling aluminum water tank 3 is connected with the cooling water return tank 15 through a cooling water return pipeline.
Preferably, the LED light emitting module 4 is welded with the cooling aluminum water tank 3, and is tightly attached, and cooling water is used for cooling the back of the LED light emitting module 4.
Preferably, a preheating area 101, an illumination area 102 and a cooling area 103 are sequentially arranged from a feeding end to a discharging end of the furnace body 1, a plurality of groups of cooling aluminum water tanks 3 which are mutually communicated are arranged right above the illumination area 102, the conveying net chain 8 drives the solar cells 7 to sequentially pass through the preheating area 101, the illumination area 102 and the cooling area 103, the preheating temperature of the solar cells 7 in the preheating area 101 is 200-500 ℃, when the solar cells 7 pass through the illumination area 102, the cooling aluminum water tanks 3 carry out illumination treatment on the solar cells, and when the temperature of the furnace liner 2 is reduced to a certain degree, the auxiliary heating pipes carry out auxiliary heating on the furnace liner 2.
The invention uses the cooling water of the cooling aluminum water tank to cool the back of the LED light-emitting module, cools the furnace for multiple times, and the temperature in the furnace not only adopts multiple waterway cooling, but also adopts an air cooling system, and the pressurized air inlet pipeline is used for compressed air or cold air to enter, thereby having further cooling effect on the furnace. The invention also adopts the black teflon bottom plate for absorbing illumination heat, and the black teflon bottom plate can absorb redundant light which does not illuminate on the solar cell, so that the illumination of the LED lamp can not affect the temperature of the furnace greatly, and the furnace is ensured to be in a constant temperature state. The solar energy battery pack cooling device comprises a boiler furnace, a solar energy battery pack cooling device and a solar energy battery pack cooling device.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the principles and structure of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An LED anti-light attenuation furnace cooling system comprises a furnace body, wherein a furnace is arranged in the furnace body, the LED anti-light attenuation furnace cooling system is characterized in that a cooling aluminum water tank is arranged at the top of the furnace, LED light emitting modules are welded at the bottom of the cooling aluminum water tank, an auxiliary cooling compressed air system and a blower pressurizing air inlet system are respectively arranged on the inner walls of the two sides of the furnace, a conveying net chain for conveying solar cells to pass through the furnace is arranged in the middle of the furnace, a water condenser is arranged right below the conveying net chain, a hot air motor for extracting hot air in the furnace and adjusting exhaust wind force is arranged at the bottom of the furnace, auxiliary heating pipes are respectively arranged on the inner walls of the two sides of the furnace, when the temperature needs to be increased in the furnace, the auxiliary cooling compressed air system and the blower pressurizing air inlet system are closed, the auxiliary heating pipes are heated, the top of the cavity of the furnace is also provided with a glass interlayer for heat insulation and light transmission, a natural wind circulation cavity is arranged between the glass interlayer and the cooling aluminum water tank, an air inlet of the natural wind circulation cavity is arranged on one side of the furnace, an air outlet pipeline of the natural wind circulation cavity is arranged on the other side of the furnace, an air blower is arranged on the air outlet pipeline of the natural wind circulation cavity and is used for exhausting air, natural wind is fed into the air inlet of the furnace, the surface of the LED light-emitting module is enabled to generate air flow, the surface of the LED light-emitting module is cooled, a preheating area, an illumination area and a cooling area are sequentially arranged from the feeding end to the discharging end of the furnace, a plurality of groups of cooling aluminum water tanks which are mutually communicated are arranged right above the illumination area, the conveying mesh belt drives solar cells to sequentially pass through the preheating area, the illumination area and the cooling area, the preheating temperature of the solar cell passing through the preheating area is 200-500 ℃, the solar cell passes through the illumination area, the LED cooling aluminum water tank is used for carrying out illumination treatment on the solar cell, and when the temperature of the furnace is reduced to a certain degree, the auxiliary heating pipe is used for carrying out auxiliary heating on the furnace.
2. The cooling system of the LED light-resistant furnace according to claim 1, wherein an air knife capable of adjusting compressed air is arranged at the end part of a cooling compressed air pipeline of the auxiliary cooling compressed air system, and the air knives on the two side walls are obliquely blown to the surface of the solar cell, so that the temperature of the solar cell is directly reduced.
3. The cooling system of the LED light-attenuation-resistant furnace according to claim 1, wherein the blower pressurization air inlet system uses a blower with adjustable power to supply fresh air to two sides of the furnace, so that the environmental temperature in the furnace is reduced, and the effect of reducing the temperature of solar cells is achieved.
4. The cooling system of the LED light-resistant furnace according to claim 1, wherein a plurality of cooling fins are arranged on the water condenser at intervals, water inlet and outlet ports of the water condenser are all arranged on one side surface of the furnace, the cooling fins increase the uniformity of air suction of the hot air motor, reduce the surface temperature difference of the solar cell, and reduce the temperature of hot air discharge.
5. The LED light-resistant furnace cooling system of claim 4, wherein the cooling aluminum water tank is connected to a cooling water supply water tank through a cooling water supply pipe, and the cooling aluminum water tank is connected to a cooling water return tank through a cooling water return pipe.
6. The cooling system of claim 4, wherein the LED lighting module is welded to the cooling aluminum water tank, and the back of the LED lighting module is cooled by cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710819477.6A CN107560442B (en) | 2017-09-12 | 2017-09-12 | LED anti-light-decay furnace cooling system |
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| CN201710819477.6A CN107560442B (en) | 2017-09-12 | 2017-09-12 | LED anti-light-decay furnace cooling system |
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| CN107560442A CN107560442A (en) | 2018-01-09 |
| CN107560442B true CN107560442B (en) | 2023-07-14 |
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| CN110021684A (en) * | 2019-04-19 | 2019-07-16 | 无锡奥特维科技股份有限公司 | Cooling device and annealing furnace |
| CN110195983A (en) * | 2019-04-30 | 2019-09-03 | 常州捷佳创智能装备有限公司 | A kind of cooling structure |
| CN111129215B (en) * | 2019-12-16 | 2021-11-16 | 浙江爱旭太阳能科技有限公司 | Light source regeneration furnace and method for reducing efficiency attenuation of PERC (positive electrode resistance) battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204857673U (en) * | 2015-07-10 | 2015-12-09 | 东莞市科隆威自动化设备有限公司 | Temperature control system of light decay stove |
| CN106017076B (en) * | 2016-07-09 | 2018-07-27 | 东莞市科隆威自动化设备有限公司 | A kind of closed-loop temperature-controlled oven and its temprature control method |
| CN106338054A (en) * | 2016-10-08 | 2017-01-18 | 苏州南北深科智能科技有限公司 | Unit lamp box structure of luminous decay resistant furnace |
| CN206312913U (en) * | 2016-12-20 | 2017-07-07 | 苏州南北深科智能科技有限公司 | Separate type for the anti-light stove that declines transmits cooling structure |
| CN107046081B (en) * | 2017-03-07 | 2019-06-14 | 东莞市科隆威自动化设备有限公司 | A kind of anti-light furnace that declines |
| CN207299953U (en) * | 2017-09-12 | 2018-05-01 | 东莞市科隆威自动化设备有限公司 | A kind of anti-light stove cooling systems that decline of LED |
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