CN109855312A - Film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe - Google Patents
Film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe Download PDFInfo
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- CN109855312A CN109855312A CN201910045414.9A CN201910045414A CN109855312A CN 109855312 A CN109855312 A CN 109855312A CN 201910045414 A CN201910045414 A CN 201910045414A CN 109855312 A CN109855312 A CN 109855312A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
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- Photovoltaic Devices (AREA)
Abstract
The present invention provides a kind of film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, including metal tube and cover cover glass tube on the outside of the metal tube, film photovoltaic power generation coupling selectivity absorber coatings structure is formed on the outer wall of the metal tube, and it is connected with extraction electrode, the both ends of the cover glass tube, which respectively seal connection one, can cut down metallic sheath, the metallic sheath that cuts down is tightly connected by the formation of the outer wall of bellows component and the metal tube, and forms vacuum interlayer between the cover glass tube and the metal tube；The conducting wire of the extraction electrode connection is formed with zigzag section in the vacuum interlayer, and the end of the zigzag section is drawn using straight envelope or is drawn out to outside cover glass tube by transition material.Film photovoltaic power generation coupling selectivity absorber coatings production line is perfectly fused in existing glass metal seal solar energy heat collection pipe production line by the present invention, is reduced costs.
Description
Technical field
It is the present invention relates to a kind of coating structure of solar energy heat collection pipe, in particular to a kind of to utilize film photovoltaic power generation coupling
The glass metal seal direct connection solar energy thermal-collecting tube structure of coating for selective absorption.
Background technique
Solar energy has inexhaustible, nexhaustible and clean and environmental protection huge advantage, is received by society, and
With fast development.
Currently, Solar use mode mainly has power generation and two kinds of heat utilization.Wherein power generation is divided into photovoltaic power generation and photo-thermal
Power generation.Heat utilization is mainly that solar energy is converted into 250 DEG C of thermal energy offer medium temperature below, low-temperature industrial or civilian heat.With
Technology development, by heat recovery, realizes heat when photovoltaic, photo-thermal start to occur technology coupling trend, i.e. solar energy power generating
Electricity supply.When solar energy optical-thermal heats, while can use the temperature difference realization photo-thermal heat supply of collecting system, power supply is realized.Or
Person, when solar energy optical-thermal heats, while photovoltaic electrification component built in part, realize photovoltaic power generation.Above-mentioned mode realizes the sun
It can cogeneration.
In existing solar thermal electric combined supply technology, mainly with the cogeneration of condensation photovoltaic refrigerating mode, commonly too
Positive energy photovoltaic panel backboard waste heat take-back model cogeneration and regular solar heat collection tube built-in photovoltaic module, power generation is simultaneously
Realize heat-collection heat-supply.It is general relative to concentrating photovoltaic power generation technology since regular solar photovoltaic battery panel cost is being remarkably decreased
Logical solar photovoltaic cell panel technology and cost have significant competitive advantage, and therefore, the advantage of condensation photovoltaic will no longer have that
Advantage and be gradually backed out market.And regular solar heat collection tube built-in photovoltaic electrification component realize cogeneration, then occur at
This is high, and generating efficiency is low, and problem not easy to operate, causes to be difficult to the marketization.Regular solar photovoltaic panel backboard waste heat returns
Receipts mode cogeneration technology, for main cogeneration mode in recent years.But there is also waste heat recycling energy be not enough to
, there is the problem of losing more than gain, is also at the situation having difficulty in taking a step in the energy to disappear for the consumption of waste heat recycling.
CN201010184286 provides a kind of photovoltaic/thermal combined vacuum straight-through thermal-arrest for trench light condensing system
Pipe, CN201210090573 provide a kind of photovoltaic and photothermal solar composite heat pipe vacuum tube, and CN201410001326 is provided
A kind of complex type solar photovoltaic interface and solar heat pipe integrating device, CN201710850100 provide a kind of photovoltaic and photothermal
Integral solar vacuum tube, these patents propose the cogeneration of solar energy heat collection pipe Yu photovoltaic electrification component integrated mode
Component, but still there are the following problems:
It 1, is the mode with existing photovoltaic power generation piece component in conjunction with low-temperature solar energy thermal-collecting tube, structure and technique are multiple
It is miscellaneous, it is difficult to carry out large-scale production.
2, existing photovoltaic cell is to separate with solar selectively absorbing coating, or only with photovoltaic cell
The waste heat of piece realizes thermal-arrest and heat exchange.The integration of photovoltaic-photo-thermal structure is not fully demonstrated.
Above-mentioned factor leads to that existing photovoltaic-light-heat integration modular construction is complicated, with high costs, overall efficiency
Lowly, it is difficult to be perfectly combined with existing thermal-collecting tube production line, and lead to not scale low cost market development.
With the development of solar energy techniques, low-temperature solar energy heat utilization technology has tended to be mature, relative to photovoltaic
The cost of power generation is lower, has been not suitable for realizing solar thermal electric combined supply using photovoltaic cell power generation.With groove type solar collection
The maturation of heat pipe and slot type medium temperature solar thermal collection system, such solar energy is by the middle temperature industrial between current 80~550 DEG C
There are huge technology development and the market space in heat utilization and solar energy high temperature power generation direction.Therefore, slot type how is made full use of too
The characteristic of positive energy system, developing low-cost, highly reliable solar chp system will be the following groove type solar system
The main direction of development.
Summary of the invention
The present invention provides a kind of film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, be purpose is to mention
It is low for a kind of development cost, the solar chp system of high reliablity and service.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of film photovoltaic generates electricity coupling selectivity absorber coatings solar energy heat collection pipe, including metal tube and covers described
Cover glass tube on the outside of metal tube, it is characterised in that:
Ceramic insulating layer, metal conducting layer, high resistance selective absorbing is successively formed on the outer wall of the metal tube to apply
Layer coupling metal gate layers, inside transparent conducting coating, photovoltaic film layer, transparent conducting coating couple metal gate layers and subtract
Anti- layer, the high resistance coating for selective absorption coupling metal gate layers include inner metal grid layer, are formed in inner metal
High resistance coating for selective absorption in the division region of grid layer and the inside being electrically connected is formed with inner metal grid layer
Electrode applies band, and in the outer surface of the photovoltaic film layer, molding transparent conducting coating couples metal gate layers, the electrically conducting transparent
Coating coupling metal gate layers include outside metal gate layers, be formed in outside metal gate layers divide region in outside it is saturating
Bright conductive coating and the lateral electrode being electrically connected with the formation of outside metal gate layers apply band；The medial electrode applies band and outside
Electrode painting, which takes, is connected separately with extraction electrode；
The both ends of the cover glass tube, which respectively seal connection one, can cut down metallic sheath, and the metallic sheath that cuts down passes through bellows group
The outer wall of part and the metal tube, which is formed, to be tightly connected, and forms vacuum clip between the cover glass tube and the metal tube
Layer；
The conducting wire of the extraction electrode connection is formed with zigzag section in the vacuum interlayer, and the end of the zigzag section is adopted
It is drawn with straight envelope or is drawn out to outside cover glass tube by transition material.
The film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, in which: the high resistance selection
200mm × 200mm film rectangular resistance of property absorber coatings between 500-50000 ohm, the photovoltaic film layer
200mm × 200mm film rectangular resistance is between 0.1-200 ohm.
The film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, in which: the zigzag section is S-shaped
Or helical form.
The film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, in which: described to cut down metallic sheath
It is connect with the outer end end cap seal of a bellows, the inner end of the bellows is tightly connected a support ring, the support ring
Sealing is fixed in metal pipe outer wall.
The film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, in which: in the support ring
Evaporable air-absorbing agent and/or nonevaporable getter are fixed with by getter support.
The film photovoltaic generates electricity coupling selectivity absorber coatings solar energy heat collection pipe, in which: the transition material is
Transitional glass or transition ceramics.
The film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, in which: the inner metal grid
Pole layer has multiple coating items, with multiple coating rings, in the shape of a spiral or grid-shaped, and the outside metal gate layers have
Multiple coating items have multiple coating rings, are in the shape of a spiral or grid-shaped.
The film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, in which: the coating item is parallel
It is arranged in the axial direction of the metal tube, or there is the angle of 0-45 degree with the axial direction of the metal tube.
The film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, in which: the coating ring is vertical
It is arranged in the axial direction of the metal tube, or there is the angle of 0-45 degree with the axial direction of the metal tube.
The film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe, in which: the inner metal grid
The multiple coating rings or multiple coating items of pole layer pass through the medial electrode and apply band formation series, parallel or series-parallel；It is described outer
The multiple coating rings or multiple coating items of side metal gate layers apply band by the lateral electrode and form series, parallel or string simultaneously
Connection.
Structure provided by the invention has the advantages that compared with prior art
1) two different coatings of complete characteristic are coupled by the present invention, select photovoltaic film layer as low resistance
Property absorber coatings, retain former high resistance coating for selective absorption, realize that photovoltaic power generation and selective absorbing collection are heating integrated, significantly
Ground reduces the structural complexity and processing cost of coating.
2) using the film photovoltaic power generation coupling selectivity absorber coatings structure of coating formulation, relative to conventional independent light
Lie prostrate module and thermal-arrest pipe composite structure, have be easily worked, the advantage of material and low processing cost.
3) film photovoltaic electrification structure couples overlay model with coating for selective absorption, has no effect on coating for selective absorption
Absorption solar energy performance.Meanwhile the photovoltaic power generation coating of membrane structure is converted into thermal energy to solar energy, and transmits to steel pipe
Thermal resistance influence be it is very small, can be ignored, have no effect on the thermal-arrest of thermal-collecting tube, heat transfer property.
4) vacuum interlayer inside conductor is formed with the setting of zigzag section (S-shaped or helical form), solves that thermal-collecting tube is heated to be slightly variable
To the influence of electrode stretcher strain when shape.And the straight envelope or transition sealing of conducting wire and cover glass tube solve thermo-electric generation structure
Electric energy is drawn.
5) outside metal gate layers, the coating ring in inner metal grid layer or coating item can connect and/or in parallel, to have
Effect improves the voltage or electric current of photovoltaic power generation, to further effectively improve efficiency.By dielectric ceramic layer, effectively realize
With effective isolation of steel tube surface, coating for selective absorption metal infrared reflecting layer.Metal layer is electric using metallic conduction is realized
The extraction of pole, while alternatively the infrared reflecting layer of property absorber coatings uses, one layer of realization is difunctional.
Detailed description of the invention
Fig. 1, Fig. 2 are a kind of solar energy heat collection pipe with film photovoltaic power generation coupling selectivity absorber coatings structure respectively
The longitudinal sectional view and transverse sectional view of structure；
Fig. 3 is the cross-sectional view of Fig. 2；
Fig. 4, Fig. 5, Fig. 6 be film photovoltaic power generation coupling selectivity absorber coatings structure different embodiments circumferentially
Deployed configuration schematic diagram；
Fig. 7 is the manufacturing process flow diagram of solar energy heat collection pipe provided by the invention.
Description of symbols: steel pipe 1；Coating structure 2；Ceramic insulating layer 21；Metal conducting layer 22；High resistance is selectively inhaled
It receives coating and couples metal gate layers 23；Inner metal grid layer 231；High resistance coating for selective absorption 232；Medial electrode applies band
233；Inside transparent conducting coating 24；Photovoltaic film layer 25；Transparent conducting coating couples metal gate layers 26；Outside electrically conducting transparent
Coating 261；Outside metal gate layers 262；Lateral electrode applies band 263；Anti-reflection layer 27；First extraction electrode 31；Second draws electricity
Pole 32；First conducting wire 311；Second conducting wire 321；Zigzag section 312,322；Cover glass tube 4；Metallic sheath 41 can be cut down；Bellows 42；End
Lid 43；Support ring 44；Vacuum interlayer 45；Getter support 46；Evaporable air-absorbing agent 47；Nonevaporable getter 48.
Specific embodiment
Hereinafter reference will be made to the drawings is described in detail by way of example and not limitation some specific embodiments of the present invention.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
Attached drawing is not necessarily to be depicted true to scale.
It as shown in Figure 1 and Figure 2, is provided by the invention a kind of with film photovoltaic power generation coupling selectivity absorber coatings knot
The longitudinal sectional view and transverse sectional view of the solar energy heat collection pipe of structure, the thermal-collecting tube include:
Steel pipe 1, managing interior circulation has fluid to be heated, and outer wall is equipped with film photovoltaic power generation coupling selectivity and absorbs
Coating structure 2 (specific structure is described in detail below) is also connected with the first extraction electrode 31, the second extraction electrode 32 on coating structure 2,
While the coating structure 2 can convert the solar energy received to heat transfer to hot fluid to be added, electricity is also generated
By drawing the first extraction electrode 31, the second extraction electrode 32 exports；
Cover glass tube 4 covers the lateral surface in the steel pipe 1, and the both ends of cover glass tube 4, which respectively seal connection one, can cut down metal
Set 41, the metallic sheath 41 that cuts down respectively are tightly connected with the outer end end cap 43 of a bellows 42, the inner end of the bellows 42
Be tightly connected a support ring 44, the sealing of support ring 44 is fixed on 1 outer wall of steel pipe, in this way, the cover glass tube 4 with
Confined space is formed between the steel pipe 1, the confined space can be made to become vacuum interlayer 45 by vacuuming action；In order to protect
Vacuum degree is held, passes through the fixed evaporable air-absorbing agent 47 of getter support 46 and nonevaporable getter in the support ring 44
48；When steel pipe 1 and cover glass tube 4 due to temperature is different or thermal expansion coefficient difference generates axially opposing displacement when, pass through institute
The relative displacement can be absorbed by stating bellows 42；First extraction electrode 31, the second extraction electrode 32 connection first are led
Line 311, the second conducting wire 321 are formed with zigzag section 312,322 (S-shaped or helical form), the complications in the vacuum interlayer 45
The end of section 312,322 is then passed through the cover glass tube 4 and is connected to outside, with by the zigzag section 312,322 to absorb
State relative displacement.Wherein, first conducting wire 311, the second conducting wire 321 are drawn using straight envelope or by transitional glass, transition
The transition materials such as ceramics are drawn out to 4 outside of cover glass tube；
The film photovoltaic power generation coupling selectivity absorber coatings structure 2, as shown in Figure 2, Figure 3, Figure 4, comprising:
Ceramic insulating layer 21 is arranged in the outer wall of the steel pipe 1, plays insulating effect, the thickness of the ceramic insulating layer 21
Between 0.1 micron -10 microns, material be mainly metal oxide, nitride, metal oxynitride, nonmetal oxide,
The mixture that any or any doping of non-metal nitride, nonmetallic nitrogen oxides is formed；
Metal conducting layer 22 is molded on the outer wall of ceramic insulating layer 21, and the thickness of the metal conducting layer 22 is between 0.1
Between -100 microns of micron, material is monometallic or more metal composite coatings, such as any of copper, aluminium, silver, gold, iron, platinum, molybdenum, tungsten
Monometallic coating or any more metal composite coatings；
High resistance coating for selective absorption couples metal gate layers 23, including the selection of inner metal grid layer 231, high resistance
Property absorber coatings 232 and medial electrode apply band 233, in which: 231 thickness of inner metal grid layer is between 0.1 micron -100
It is monometallic coating or more metal composite coatings, as any monometallic of copper, aluminium, silver, gold, iron, platinum, molybdenum, tungsten applies between micron
Layer or any more metal composite coatings；The inner metal grid layer 231 is in linear or distributed in grid in metal conducting layer
The width of 22 outer surface, lines or grid lines is between 50 microns -2 millimeters, and the spacing between lines or grid lines is between 5
Between millimeter -100mm；The high resistance coating for selective absorption 232 is prepared in the outer surface of metal conducting layer 22, and is located at interior
Between the region that side metal gate layers 231 divide, with the inner metal grid layer 231 circumferentially to or it is axially contact, but not
It covers in radial directions, thickness is between 20 nanometers -500 microns；The high resistance coating for selective absorption 232
Material is the film resistor material that pure metal is formed, and the pure metal can be monometallic and be also possible to more metal composites, institute
The material for the high resistance coating for selective absorption 232 stated is also possible to pure metal and non-pure metal adulterates the film resistor material to be formed
Material, the non-pure metal is metal oxide, metal nitride, metal oxynitride, nonmetal oxide, nonmetallic nitridation
Any or arbitrary composition of object, nonmetallic nitrogen oxides, and the molar ratio between pure metal and non-pure metal should
Between 1:100-100:1；In short, the film resistor material should be made to be formed by 200mm × 200mm film square electricity
Resistance is between 500-50000 ohm；The medial electrode applies band 233 and is electrically connected with the inner metal grid layer 231 formation,
For exporting electric energy to the second extraction electrode 32, for thickness between 1 micron -100 microns, width is 1.0-5.0 millimeters
Between, material is monometallic coating or more metal composite coatings, as any monometallic of copper, aluminium, silver, gold, iron, platinum, molybdenum, tungsten applies
Layer or any more metal composite coatings；
Inside transparent conducting coating 24 is arranged in the appearance of high resistance coating for selective absorption coupling metal gate layers 23
Face, is indium-tin oxide coatings or zinc oxide aluminum coating, thickness between 0.1 micron -100 microns, and with inside gold
Belong to grid layer 231 and forms good electrical contact；
Photovoltaic film layer 25 is arranged in the outer surface of inside transparent conducting coating 24, by monocrystalline silicon, polysilicon, copper and indium gallium
At least one composition of selenium, GaAs, thickness are formed by 200mm × 200mm film between 10 microns -1000 microns
Square resistance is between 0.1-200 ohm；
Transparent conducting coating couples metal gate layers 26, is arranged in the outer surface of the photovoltaic film layer 25, including outside
Transparent conducting coating 261, outside metal gate layers 262 and lateral electrode apply band 263, in which: the outside metal gate layers
262 be monometallic coating or more metal composite coatings, as copper, aluminium, silver, gold, iron, platinum, molybdenum, tungsten any monometallic coating or appoint
It anticipates more metal composite coatings；The outside metal gate layers 262 are in linear or distributed in grid in the outer of photovoltaic film layer 25
The width of surface, lines or grid lines between 50 microns -2 millimeters, spacing between lines or grid lines between 5 millimeters -
Between 100mm；The outside transparent conducting coating 261 is prepared in the outer surface of photovoltaic film layer 25, and is located at outside metal gate
Between the region that pole layer 262 divides, with the outside metal gate layers 262 circumferentially to or it is axially contact, but not in radial side
Covering upwards, thickness is between 0.1 micron -100 microns；The material of the outside transparent conducting coating 261 is indium oxide
Tin coating or zinc oxide aluminum coating；The lateral electrode applies band 263 and is electrically connected with the outside metal gate layers 262 formation, uses
It exports in by electric energy to the first extraction electrode 31, for thickness between 1 micron -100 microns, width is 1.0-5.0 millimeter
Between, material be monometallic coating or more metal composite coatings, as copper, aluminium, silver, gold, iron, platinum, molybdenum, tungsten any monometallic coating
Or any more metal composite coatings；
Anti-reflection layer 27 is arranged in the outer surface of the transparent conducting coating coupling metal gate layers 26, is the oxidation of aluminium, silicon
Any or any combination of object, nitride or nitrogen oxides, with a thickness of 40-200 nanometers, outer surface can concave-convex surface structure or
Vesicular texture；
Such structure can be acted on by photovoltaic and be produced electricl energy, not influence solar energy heating also.
In structure shown in Fig. 4, the inner metal grid layer 231 has multiple along the axial parallel arrangement of steel pipe 1
Inside coating ring, the inside coating ring apply 233 parallel connection of band by the medial electrode, and the outside metal gate layers 262 have
There are multiple outside coating rings along the axial parallel arrangement of steel pipe 1, the outside coating ring applies band 263 simultaneously by the lateral electrode
Connection；In the present embodiment, the inside coating ring is staggered in the axial direction of steel pipe 1 with outside coating ring；
Again as shown in figure 5, there are the inner metal grid layer 231 multiple insides along the circumferential parallel arrangement of steel pipe 1 to apply
Layer item, the inside coating item apply 233 parallel connection of band by the medial electrode, and the outside metal gate layers 262 have multiple
Along the outside coating ring of the axial parallel arrangement of steel pipe 1, the outside coating ring applies 263 parallel connection of band by the lateral electrode；Such as
This, is mutually perpendicular to the coating item with coating ring；
Under the guide of embodiment shown in Fig. 5, there is another alternative embodiment, i.e. outside metal gate layers 262 have
Multiple outside coating items along the circumferential parallel arrangement of steel pipe 1, the inner metal grid layer 231 have multiple axial along steel pipe 1
The inside coating ring of parallel arrangement, the coating item is same as coating ring to be mutually perpendicular to, just no longer attached drawing；
In the embodiment shown in fig. 6, the inner metal grid layer 231 is netted with outside metal gate layers 262,
And the grid intersection of inner metal grid layer 231 is located at the grid element center position of outside metal gate layers 262, thus mutually
It is staggered.
On the basis of Fig. 4, Fig. 5, Fig. 6, inner metal grid layer 231 be may be selected with multiple coating items, with multiple
Coating ring is grid-shaped, can also be oblique coating item (with the angle of 1 axis of steel pipe between 0-45 degree), oblique coating ring
(with the angle of 1 axis of steel pipe between 0-45 degree) or helical ring, and outside metal gate layers 262 also may be selected have multiple paintings
Layer item has multiple coating rings or grid-shaped, can also be oblique coating item, oblique coating ring or helical ring, then inside gold
Any combination can be formed by belonging to grid layer 231 and outside metal gate layers 262, and can be to connect, simultaneously between coating item, coating ring
Connection or series-parallel connection relationship.On this basis, it may occur to persons skilled in the art that more inner metal grid layer 231,
The structure of outside metal gate layers 262, herein again can not be not exhaustive one by one.
Compared with existing disclosed photovoltaic solar thermal-collecting tube structure, structure of the invention is had the advantage that
1) two different coatings of complete characteristic are coupled by the present invention, select photovoltaic film layer 25 as low resistance
Selecting property absorber coatings retain former high resistance coating for selective absorption 232, realize photovoltaic power generation and selective absorbing thermal-arrest one
Change, reduces the structural complexity and processing cost of coating significantly.
2) using the film photovoltaic power generation coupling selectivity absorber coatings structure 2 of coating formulation, relative to the independent of routine
Photovoltaic module and thermal-arrest pipe composite structure, have be easily worked, the advantage of material and low processing cost.
3) film photovoltaic electrification structure couples overlay model with coating for selective absorption, has no effect on coating for selective absorption
Absorption solar energy performance.Meanwhile the photovoltaic power generation coating of membrane structure is converted into thermal energy to solar energy, and passes to steel pipe 1
Pass thermal resistance influence be it is very small, can be ignored, have no effect on the thermal-arrest of thermal-collecting tube, heat transfer property.
4) 45 inside conductor of vacuum interlayer is formed with the setting of zigzag section (S-shaped or helical form), solve thermal-collecting tube be heated it is micro-
To the influence of electrode stretcher strain when deformation.And the straight envelope or transition sealing of conducting wire and cover glass tube 4 solve photovoltaic power generation knot
The electric energy of structure is drawn.
5) outside metal gate layers 262, the coating ring in inner metal grid layer 231 or coating item can connect and/or simultaneously
Connection, to effectively improve the voltage or electric current of photovoltaic power generation, to further effectively improve efficiency.By dielectric ceramic layer, have
Effect realizes effective isolation with 1 surface of steel pipe, coating for selective absorption metal infrared reflecting layer.Metal layer, which uses, realizes gold
Belong to the extraction of conductive electrode, while alternatively the infrared reflecting layer of property absorber coatings uses, one layer of realization is difunctional.
In short, the present invention realizes film photovoltaic power generation and the perfect combination of coating for selective absorption, and so as to form
The glass metal seal direct connection solar energy thermal-collecting tube of highly reliable, inexpensive cogeneration mode.
Although in addition, the present invention be by taking thermal-collecting tube as an example to film photovoltaic generate electricity coupling selectivity absorber coatings structure 2 into
Introduction is gone, but those skilled in the art are it will also be understood that film photovoltaic power generation coupling selectivity absorber coatings can also be with
It prepares or is molded on the outer surface of the canister (such as collecting plate) irradiated by solar energy of other shapes.
It mainly include following work as shown in fig. 7, being the manufacturing process flow diagram of solar energy heat collection pipe provided by the invention
Step: steel pipe plated film, the pre-treatment of cover glass, small metalwork pre-treatment, general assembly, vacuum evacuation, detection and packaging.
The steel pipe coating process process specifically includes that steel pipe polishing, cleaning, exhaust, plated film, electrode assembly.
The polishing refers to the corrosion for removing steel tube surface by way of mechanically or chemically, is lower than surface smoothness
1.0 micron.
The cleaning, after referring to steel pipe polishing, first pass through the method removal spot of steel tube surface physically or chemically, oil and
Corrosion forms one layer of passivating film in steel tube surface secondly by method physically or chemically, then carries out to steel tube surface impurity
Cleaning, the moisture film of steel tube surface defective material is removed finally by air knife mode, prevents steel pipe from further aoxidizing.
After referring to washing steel pipes, steel pipe is put into vacuum furnace for the exhaust, first suction to 10Pa with
Under, heater is warming up to 400-450 DEG C, and keeps the temperature lasting evacuated state about 20-60 minutes simultaneously, vacuum natural cooling
To after 350-150 DEG C, it is filled with purity oxygen or nitrogen, realizes that surface quickly aoxidizes or nitrogenizes, is further formed densification on surface
Metal oxide or metal nitride films；Finally taken out under the conditions of 100 DEG C ± 30 DEG C.
The plated film specifically includes that plasma cleaning, the preparation of ceramic insulating layer 21, the preparation of metal conducting layer 22, inside gold
Belong to the preparation of grid layer 231, the preparation of high resistance coating for selective absorption 232, the preparation of inside transparent conducting coating 24, photovoltaic film layer
25 preparation, outside transparent conducting coating 261 preparation, outside metal gate layers 262 preparation, anti-reflection layer 27 preparation, electrode etch with
And electrode assembly.
The plasma cleaning refers to that the steel pipe for being 100 DEG C ± 30 DEG C by temperature after exhaust is packed into vacuum coating equipment, leads to
It crosses after being evacuated to setting vacuum degree, opens aura or arc light plasma cleaning process, remove the dust or impurity of steel tube surface,
Surface cleaning is kept, while opening vacuum heater, keeping temperature of steel pipe is between 150 DEG C -450 DEG C.
Prepared by the ceramic insulating layer 21, refer in vacuum coating equipment using magnetron sputtering or other vacuum coating sides
Method selects pure metal and alloying metal target according to 21 material property of ceramic insulating layer, is with nitrogen, oxygen, carbonaceous gas etc.
Reaction gas prepares ceramic insulating layer 21 by working gas of argon gas.
Prepared by the metal conducting layer 22, refer in vacuum coating equipment using magnetron sputtering or other vacuum coating sides
Method selects pure metal and alloying metal target according to 22 material property of metal conducting layer, prepares metal by working gas of argon gas
Conductive layer 22.
Prepared by the inner metal grid layer 231, refer in vacuum coating equipment using magnetron sputtering or other Vacuum Depositions
Film method selects pure metal and alloying metal target, using argon gas as work gas according to 231 material property of inner metal grid layer
Body prepares the inner metal grid layer 231 of corresponding construction by steel tube surface shielding mode；Or refer to using laser melting,
The method of evaporation, vacuum covering selects pure metal and alloying metal preparation inside according to 231 material property of inner metal grid layer
Metal gate layers 231.The preparation of inner metal grid layer 231 further includes forming medial electrode on metal conducting layer 22 to apply band
233, the medial electrode applies band 233 and the inner metal grid layer 231 is connected and/or is connected in parallel.
It is prepared by the high resistance coating for selective absorption 232, refer in vacuum coating equipment using magnetron sputtering or other
Vacuum coating method, the resistive formation material property according to coating for selective absorption select pure metal and alloying metal target, with
Nitrogen, oxygen, carbonaceous gas etc. are reaction gas, prepare high resistance coating for selective absorption 232 by working gas of argon gas；Or
Person refers to selectively to inhale by using the high resistance on the technique of laser or plasma etching removal 231 surface of inner metal grid layer
Coating 232 is received, realizes 231 surface exposure of inner metal grid layer.
Prepared by the inside transparent conducting coating 24, be using the method for vacuum coating, including magnetron sputtering, multi sphere ion
The modes such as plating, cathodic sputtering, radio-frequency sputtering, vapor deposition prepare zinc oxide aluminum coating or indium tin oxide transparent conductive coating, and make interior
Side transparent conducting coating 24 is formed with inner metal grid layer 231 and is well contacted.
Prepared by the photovoltaic film layer 25, be using the method for vacuum coating, including magnetron sputtering, multi-arc ion coating, yin
Pole sputtering, radio-frequency sputtering, vapor deposition mode prepare be with copper indium gallium selenide, GaAs, monocrystalline silicon, polysilicon etc. basic membrane system light
Volt power generation coating, and good combination is formed with inside transparent conducting coating 24.
It is prepared by the outside transparent conducting coating 261, be using the method for vacuum coating, including magnetron sputtering, multi sphere from
Sub- plating, cathodic sputtering, radio-frequency sputtering, vapor deposition mode prepare zinc oxide aluminum coating or indium tin oxide transparent conductive coating, and make
Outside transparent conducting coating 261 is formed with photovoltaic film layer 25 and is well contacted.
Prepared by the outside metal gate layers 262, refer in vacuum coating equipment using magnetron sputtering or other Vacuum Depositions
Film method, the material property according to outside metal gate layers 262 select pure metal and alloying metal target, using argon gas as work gas
Body prepares the outside metal gate layers 262 of corresponding construction by steel tube surface shielding mode；Or refer to using laser melting,
The method of evaporation, vacuum covering, the material property according to outside metal gate layers 262 select pure metal or alloying metal preparation outer
Side metal gate layers 262.The outside metal gate layers 262 preparation further include formed on transparent conducting coating 261 on the outside it is outer
Lateral electrode applies band 263, and the lateral electrode applies band 263 and the outside metal gate layers 262 are carried out series connection and/or parallel connection even
It connects.
Prepared by the anti-reflection layer 27, refer to the method using magnetron sputtering, based on aluminium, aluminium silicon composite material, silicon etc.
Sputtering of materials target prepares anti-reflection layer 27 by working gas of argon gas with nitrogen, oxygen, carbonaceous gas etc. for reaction gas.
The electrode etch passes through laser or plasma etching side after referring to that completing anti-reflection layer 27 prepares in vacuum chamber
Formula applies band at thermal-collecting tube both ends or single-ended outer conductive and inner conductive is applied and performed etching at band, led with getting rid of outside
Electropaining band and inner conductive apply the coating of the outer surface of band.
The electrode assembly, refers to after completing electrode etch in vacuum chamber, plated film steel pipe is taken out out of vacuum coating room,
By welding, extraction electrode is respectively welded at corresponding outer conductive painting band and inner conductive painting takes.
The cover glass pre-treating technology process specifically includes that glass metal seal, connects tail pipe, is coated with anti-reflection film.
The glass metal seal, metallic sheath 41 will can be cut down by way of direct or transition sealing and cover glass tube by referring to
4 sealings weld together, and then anneal to sealing-in position and surrounding, to keep good vacuum sealing performance, mechanicalness
It can be with cold-and-heat resistent impact property.Used cover glass tube 4 is Pyrex.
It is described to connect tail pipe, be 4 setting position of cover glass tube punch, directly seal or transition sealing by way of seal two rows
Gas tail pipe, and make annealing treatment.The structure of used tailpipe can be material identical with cover glass tube 4, or part is adopted
With material identical with 4 material of cover glass tube, directly sealed with realizing.
It is described to be coated with anti-reflection membrane process, refer to and surfaces externally and internally is carried out to cover glass tube 4, or the individually cleaning of inner surface.It is logical
The mode for crossing lifting is coated with anti-reflection film on 4 surface of cover glass tube, realizes anti-reflection film in cover glass by way of 150-450 DEG C of heating
The solidification on 4 surface of glass pipe.
The small metalwork pre-treatment refers to getter element combination, the combination of 42 component of bellows etc..
The getter element combination, refers to and fixes evaporable air-absorbing agent and nonevaporable getter by spot welding mode
On getter support 46, getter element is formed.
42 component of the bellows combination refers to and support ring 44, bellows 42, the welded connecting of end cap 43 gets up to form wave
Then getter element welding or other mechanical connection manners are fixed on the vacuum cavity of 42 component of bellows by 42 component of line pipe
Side.
General assembly refers to and combines plated film steel pipe, cover glass tube 4 and 42 component of bellows, assembles, welding together.
The combination refers to and now plated film steel pipe is inserted into cover glass tube 4, and guarantees that conducting wire is inserted into tailpipe
It is interior.
The assembly refers to and is inserted into 42 component of bellows from thermal-collecting tube both ends that be fixed on cover glass tube 4 cuts down metal
Between set 41 and steel pipe, and carry out circumference and axially position.
The welding, refer to successively by cover glass tube 4, can cut down between metallic sheath 41,42 component of bellows and plated film steel pipe
Preparatory spot-welded is fixed, then by continuously welding, is realized cover glass tube 4, can be cut down metallic sheath 41,42 component of bellows and plated film
Closed welding between steel pipe.
The vacuum evacuation refers to and the thermal-collecting tube after general assembly is put into exhaust station, by tailpipe and vacuum machine
Group connection opens setting program heating mode, is gradually heated to 350-450 DEG C, holds after being evacuated to 10pa inside thermal-collecting tube
It is continuous to vacuumize and keep the temperature 30-120 minutes, when being then gradually cooled to 400-200 DEG C according to setting program, opens Electronic seal and set
It is standby, by tailpipe from row's mouth hermetic separation, and ensure conducting wire and tailpipe sealing sealing.Finally according to setting cooling temperature
Curve, thermal-collecting tube natural cooling or pressure are cooled to room temperature.
The detection refers to using range estimation, vacuum degree, the appearance of helium mass spectrometer detector, electric spark detector to thermal-collecting tube
Etc. quality detected, then laser marking.
The packaging, refers to and completes above procedure, thermal-collecting tube is packaged, vanning.Complete entire thermal-collecting tube production technology mistake
Journey.
A kind of film photovoltaic power generation coupling selectivity absorber coatings glass metal seal direct connection solar energy provided by the invention
The processing method of thermal-collecting tube, has the advantage that
1) film photovoltaic power generation coupling selectivity absorber coatings production line existing glass metal is perfectly fused to melt
It seals in solar energy heat collection pipe production line, it is only necessary to which the vacuum coating employed in existing coating for selective absorption coating process is set
The vacuum coater for increasing film photovoltaic coating and station and laser or plasma etching equipment appropriate in standby.
2) ceramic insulating layer 21 in corresponding film photovoltaic power generation coating and electrically conducting transparent apply the preparation process of band, can adopt
It is prepared with the infrared metallic reflector of original coating for selective absorption, the equipment of anti-reflection layer 27 and technique, process flow is simple, can
It leans on, equipment and technique low in input cost, operating cost are cheap, and stability is good.
Described above to be merely exemplary for the purpose of the present invention, and not restrictive, those of ordinary skill in the art understand,
Without departing from the spirit and scope defined by the claims, can many modifications may be made, variation or equivalent, but will all fall
Enter within protection scope of the present invention.
Claims (10)
- The coupling selectivity absorber coatings solar energy heat collection pipe 1. a kind of film photovoltaic generates electricity, including metal tube and cover in the gold Belong to the cover glass tube on the outside of pipe, it is characterised in that:Ceramic insulating layer, metal conducting layer, high resistance coating for selective absorption coupling are successively formed on the outer wall of the metal tube Close metal gate layers, inside transparent conducting coating, photovoltaic film layer, transparent conducting coating coupling metal gate layers and anti-reflection Layer, the high resistance coating for selective absorption coupling metal gate layers include inner metal grid layer, are formed in inner metal grid High resistance coating for selective absorption in the divisions region of pole layer and to form the inside that is electrically connected with inner metal grid layer electric Pole applies band, and in the outer surface of the photovoltaic film layer, molding transparent conducting coating couples metal gate layers, and the electrically conducting transparent applies Layer coupling metal gate layers include outside metal gate layers, be formed in outside metal gate layers divide region in outside it is transparent Conductive coating and the lateral electrode being electrically connected with the formation of outside metal gate layers apply band；The medial electrode applies band and outside electricity Pole, which applies to take, is connected separately with extraction electrode；The both ends of the cover glass tube, which respectively seal connection one, can cut down metallic sheath, it is described cut down metallic sheath by bellows component with The outer wall of the metal tube, which is formed, to be tightly connected, and forms vacuum interlayer between the cover glass tube and the metal tube；The conducting wire of the extraction electrode connection is formed with zigzag section in the vacuum interlayer, and the end of the zigzag section is using straight Envelope is drawn or is drawn out to outside cover glass tube by transition material.
- The coupling selectivity absorber coatings solar energy heat collection pipe 2. film photovoltaic according to claim 1 generates electricity, feature exist In: 200mm × 200mm film rectangular resistance of the high resistance coating for selective absorption is between 500-50000 ohm, institute 200mm × 200mm film rectangular resistance of photovoltaic film layer is stated between 0.1-200 ohm.
- The coupling selectivity absorber coatings solar energy heat collection pipe 3. film photovoltaic according to claim 1 generates electricity, feature exist In: the zigzag section is S-shaped or helical form.
- The coupling selectivity absorber coatings solar energy heat collection pipe 4. film photovoltaic according to claim 1 generates electricity, feature exist In: described to cut down metallic sheath and connect with the outer end end cap seal of a bellows, the inner end of the bellows is tightly connected one Support ring, the support ring sealing are fixed in metal pipe outer wall.
- The coupling selectivity absorber coatings solar energy heat collection pipe 5. film photovoltaic according to claim 4 generates electricity, feature exist In: in the support ring evaporable air-absorbing agent and/or nonevaporable getter are fixed with by getter support.
- The coupling selectivity absorber coatings solar energy heat collection pipe 6. film photovoltaic according to claim 1 generates electricity, feature exist In: the transition material is transitional glass or transition ceramics.
- The coupling selectivity absorber coatings solar energy heat collection pipe 7. film photovoltaic according to claim 1 generates electricity, feature exist In: the inner metal grid layer with multiple coating items, there are multiple coating rings, in the shape of a spiral or grid-shaped, it is described Outside metal gate layers with multiple coating items, there are multiple coating rings, in the shape of a spiral or grid-shaped.
- The coupling selectivity absorber coatings solar energy heat collection pipe 8. film photovoltaic according to claim 7 generates electricity, feature exist In: the coating item is parallel to the axial arrangement of the metal tube, or has the folder of 0-45 degree with the axial direction of the metal tube Angle.
- The coupling selectivity absorber coatings solar energy heat collection pipe 9. film photovoltaic according to claim 7 generates electricity, feature exist In: the coating ring is arranged perpendicular to the axial direction of the metal tube, or has the folder of 0-45 degree with the axial direction of the metal tube Angle.
- The coupling selectivity absorber coatings solar energy heat collection pipe 10. film photovoltaic according to claim 7 generates electricity, feature exist In: the multiple coating rings or multiple coating items of the inner metal grid layer apply band formation by the medial electrode and connect, simultaneously Connection is series-parallel；The multiple coating rings or multiple coating items of the outside metal gate layers apply band by the lateral electrode and are formed Series, parallel is series-parallel.
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| CN109855312B (en) | 2024-06-21 |
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