CN104966752A - High-electric energy production crystalline silicon solar cell assembly and manufacturing technology thereof - Google Patents

High-electric energy production crystalline silicon solar cell assembly and manufacturing technology thereof Download PDF

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Publication number
CN104966752A
CN104966752A CN201510189026.XA CN201510189026A CN104966752A CN 104966752 A CN104966752 A CN 104966752A CN 201510189026 A CN201510189026 A CN 201510189026A CN 104966752 A CN104966752 A CN 104966752A
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silicon solar
crystal silicon
solar module
microns
nano
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詹兴华
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詹兴华
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/048Encapsulation of modules
    • H01L31/0481Encapsulation of modules characterised by the composition of the encapsulation material
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The present invention discloses a high-electric energy production crystalline silicon solar cell assembly. The high-electric energy production crystalline silicon solar cell assembly comprises a front surface layer, a colloid sealing layer, a crystalline silicon solar cell piece layer, a colloid sealing layer and a back supporting plate. The material of the front surface layer is an ethylene-tetrafluoroethylene copolymer film, and a three-dimensional micro-nano array structure is arranged on the front surface layer. A manufacturing technology involved in the present invention is improved on the basis of an original solar cell assembly packaging technology, and can be accessed in the actual production rapidly.

Description

A kind of high energy output crystal silicon solar batteries assembly and manufacture craft thereof
Technical field
The present invention relates to area of solar cell, specifically a kind of high energy output crystal silicon solar batteries assembly and manufacture craft thereof.
Background technology
Although the application of solar cell can reduce the dependence of human production activity to fossil fuel effectively, the generating efficiency of solar module still governs the development of solar energy generation technology so far.Therefore, the development of unit energy output to photovoltaic industry improving solar module plays key effect.
It is electric energy that solar module realizes transform light energy, in actual production life, provide electric power.In existing photovoltaic products market, monocrystalline/polycrystalline silicon solar module still occupies leading position.Therefore, significantly promote monocrystalline/polycrystalline silicon solar module unit generating total amount and become the key problem in technology point that photovoltaic industry must break through.Especially for construction and the operation of photovoltaic plant, significantly improving of total amount of solar module generating will create huge economic benefit.
For the monocrystalline/polycrystalline silicon solar module of existing photovoltaic market, there is some short slab following.One is, upper surface encapsulating material is the special toughened glass of plated film, and light transmittance is generally 90% to 93%, poor to light anti-reflection effect, and this kind of material transmissivity is difficult to further lifting; Two are, current monocrystalline/polycrystalline silicon solar module cannot control incident ray effectively, realize maximum absorption and utilize; Three are, existing monocrystalline/polycrystalline silicon solar module is strong to incident angle of light dependence; Four are, existing monocrystalline/polycrystalline silicon solar module effectively cannot extend generating dutation; Five are, the particle (as dust) etc. in air drops to solar module surface, the irradiation of meeting stop portions light, cause solar module generating total amount to reduce.
summary of the inventionthe object of this invention is to provide a kind of high energy output crystal silicon solar batteries assembly and manufacture craft thereof, on the basis of crystal silicon solar batteries component package technology and structure, a kind of film material plies with micro-nano light trapping structure is incorporated in solar module, makes solar module have strong antireflection, significantly reduce the performance of the dependence of angle to incident light, surperficial strong-hydrophobicity, high transmission rate etc.Therefore, the solar module that the present invention mentions can realize increasing substantially generating total amount.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of high energy output crystal silicon solar batteries assembly, it is characterized in that: comprise the front surface layer, colloid seal layer, crystal silicon solar batteries lamella, colloid seal layer, the back support plate that stack gradually from top to bottom, it is characterized in that: described front surface layer material is ethylene-tetrafluoroethylene copolymer film, ethylene-tetrafluoroethylene copolymer film has three-dimensional micro-nano array structure;
Described colloid seal layer is ethylene-vinyl acetate copolymer or TPUE rubber TPU;
Described crystal silicon solar batteries lamella is monocrystaline silicon solar cell or polysilicon solar cell;
Described back support plate be toughened glass or other there is the polymeric material of good mechanical strength.
Described one high energy output crystal silicon solar batteries assembly, is characterized in that: the thickness of described front surface layer is 25 microns or 50 microns, and the three-dimensional micro-nano array structure formed on the ethylene-tetrafluoroethylene copolymer film of front surface layer has following three kinds:
(1), the shape of three-dimensional micro-nano holographic structure is regular pyramid array, and pyramid base length and width are equal is 50 μm, is highly 23 μm, and aspect ratio is 1:2, and the pyramid structure cycle is 60 microns;
(2), the shape of three-dimensional micro-nano holographic structure is the regular pyramid array separated with spine, pyramid base length and width are equal is 50 μm, be highly 10 μm, aspect ratio is 1:5, the pyramid structure cycle is 70 microns, do to separate with the ridge of projection between pyramid, spine height is 10 μm;
(3), the shape of three-dimensional micro-nano holographic structure is moth eye array structure, and moth eye basal diameter 300 microns, high 150 microns, aspect ratio is 1:2, the cycle 300 microns.
Described one high energy output crystal silicon solar batteries assembly, is characterized in that: also include the aluminum alloy frame of frame outside each layer, and is bonded in the terminal box be connected on back support plate and with crystal silicon solar batteries lamella.
A manufacture craft for high energy output crystal silicon solar batteries assembly, is characterized in that: comprise the following steps:
(1), first solar module is formed well by stacked in order for each layer, then the nickel mould and assisted heating device with three-dimensional micro-nano structure are put on ethylene-tetrafluoroethylene copolymer film, and put into solar module laminating machine together with stacked good solar module; Apply pressure by solar module laminating machine after the assisted heating device of solar module laminating machine is heated to 260 degrees Celsius, force value is an atmospheric pressure, stops heating subsequently at once;
(2), air in solar module is extracted out by vacuumizing by solar module laminating machine, then being heated to 140 degrees Celsius makes colloid seal layer melt, by ethylene-tetrafluoroethylene copolymer film, crystal silicon solar batteries lamella and back support plate bond together, after keeping the time of temperature-pressure to be about 20 minutes, complete component lamination, send machine chamber, to carry out after cooling when chamfered edge removes lamination after colloid seal melting layer because pressure stretches out the burr be solidified to form, load onto terminal box and aluminum alloy frame at random, complete the making of high energy output crystal silicon solar batteries assembly.
Advantage of the present invention is:
1. significantly improve assembly generating total amount;
2. the assembly surface of micro-nano array makes solar module surface have strong-hydrophobicity.In conjunction with the resistance to bond of etfe film, the dust or the oil stain that drop on solar module surface are not easy to be attached to solar module surface, and when rain drop erosion time, particle (as dust) can be washed away automatically;
3. improve solar module front surface light transmittance.Light transmittance is promoted to 95% of etfe film by 90% of script photovoltaic glass;
4. weaken or eliminate the solar module problem large to light angle dependence;
5. the packaging technology of solar module is transformed into instinct and is effectively controlled, and while lifting subassembly performance, can access fast in ripe extensive mass actual production, realizes low-cost high-efficiency and produces, create great economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the absorption schematic diagram of different surfaces structure to light, wherein:
Fig. 2 a is planar structure surface is that three-dimensional micro-nano structure is to the reflection of incident light and absorption figure to the reflection of incident light and absorption figure, Fig. 2 b.
Embodiment
As shown in Figure 1, a kind of high energy output crystal silicon solar batteries assembly, comprise the front surface layer 1, colloid seal layer 2-1, crystal silicon solar batteries lamella 3, colloid seal layer 2-2, the back support plate 4 that stack gradually from top to bottom, front surface layer 1 material is ethylene-tetrafluoroethylene copolymer film, ethylene-tetrafluoroethylene copolymer film has three-dimensional micro-nano array structure;
Colloid seal layer 2-1 and 2-2 is ethylene-vinyl acetate copolymer or TPUE rubber TPU;
Crystal silicon solar batteries lamella 3 is monocrystaline silicon solar cell or polysilicon solar cell;
Back support plate 4 be toughened glass or other there is the polymeric material of good mechanical strength.
The thickness of front surface layer 1 is 25 microns or 50 microns, and the three-dimensional micro-nano array structure formed on the ethylene-tetrafluoroethylene copolymer film of front surface layer has following three kinds:
(1), the shape of three-dimensional micro-nano holographic structure is regular pyramid array, and pyramid base length and width are equal is 50 μm, is highly 23 μm, and aspect ratio is 1:2, and the pyramid structure cycle is 60 microns;
(2), the shape of three-dimensional micro-nano holographic structure is the regular pyramid array separated with spine, pyramid base length and width are equal is 50 μm, be highly 10 μm, aspect ratio is 1:5, the pyramid structure cycle is 70 microns, do to separate with the ridge of projection between pyramid, spine height is 10 μm;
(3), the shape of three-dimensional micro-nano holographic structure is moth eye array structure, and moth eye basal diameter 300 microns, high 150 microns, aspect ratio is 1:2, the cycle 300 microns.
Also include the aluminum alloy frame of frame outside each layer, and be bonded in the terminal box be connected on back support plate and with crystal silicon solar batteries lamella.
A manufacture craft for high energy output crystal silicon solar batteries assembly, comprises the following steps:
(1), first solar module is formed well by stacked in order for each layer, then the nickel mould and assisted heating device with three-dimensional micro-nano structure are put on ethylene-tetrafluoroethylene copolymer film, and put into solar module laminating machine together with stacked good solar module; Apply pressure by solar module laminating machine after the assisted heating device of solar module laminating machine is heated to 260 degrees Celsius, force value is an atmospheric pressure, stops heating subsequently at once;
(2), air in solar module is extracted out by vacuumizing by solar module laminating machine, then being heated to 140 degrees Celsius makes colloid seal layer melt, by ethylene-tetrafluoroethylene copolymer film, crystal silicon solar batteries lamella and back support plate bond together, after keeping the time of temperature-pressure to be about 20 minutes, complete component lamination, send machine chamber, to carry out after cooling when chamfered edge removes lamination after colloid seal melting layer because pressure stretches out the burr be solidified to form, load onto terminal box and aluminum alloy frame at random, complete the making of high energy output crystal silicon solar batteries assembly.
The present invention introduces the micro-nano light trapping structure (or playing the similar micro nano structure of identical action effect) of crystal silicon solar batteries assembly, makes crystal silicon solar batteries assembly strengthen absorbing luminous energy, thus reaches the object improving energy output.Meanwhile, adopt a kind of thin-film material as the encapsulating material of crystal silicon solar batteries upper surface, substitute traditional toughened glass, the novel high energy output crystal silicon solar batteries assembly surface that the present invention is mentioned has higher light transmittance.
Manufacture craft of the present invention; improve on traditional crystal silicon solar batteries module encapsulation techniques; therefore its production technology can access rapidly in actual scale batch production; the cost of novel high energy output crystal silicon solar batteries assembly is controlled, realizes the production of low-cost high-efficiency.Novel high energy output crystal silicon solar batteries assembly disclosed in this invention, more existing traditional crystal silicon solar batteries assembly has rapid progress, in encapsulating material, structure and energy output etc., have breakthrough development, to photovoltaic industry, especially the development of photovoltaic plant has great significance.
In the present invention:
1, front surface layer
Front surface layer disclosed in this invention is a kind of thin-film material, and its English name is Ethylene-Tetra-Fluoro-Ethylene (ETFE); Chinese is ethylene-tetrafluoroethylene copolymer.Etfe film has good thermal stability, strong corrosion resistance, by force ageing resistance, high flame retardant, extremely low vapor permeability, superior tensile and mechanicalness etc. go out color characteristic; be suitable as the encapsulating material of solar battery sheet, play protection battery and circuit function.Meanwhile, this material transmissivity is up to 95% or more, and the not transmission of the light such as shielding of ultraviolet, its life-span reaches 25 years or more especially, meets the requirement at least 20 years solar module life-spans or more completely.In addition, etfe film has good resistance to bond surface, makes it have high anti-soil, the feature of easy cleaning.Usual rainwater can remove main dirt.
In sum, etfe film is suitable as crystal silicon solar batteries assembly front surface encapsulation material, has outstanding durability, transparency, light, after-tack.
The etfe film used disclosed in the present invention has a kind of micro-nano light trapping structure (or playing the similar micro nano structure of identical action effect), its micro-nano light trapping structure be characterized as following listed by:
(1), front surface photic zone thickness is 30 microns, 50 microns or 100 microns;
(2), front surface photic zone upper surface has three-dimensional micro-nano array light trapping structure, its structure and morphology (including but not limited to) cylinder (four directions, six sides etc.), cylinder, pyramid (three pyramids, tetrahedral pyramidal cylinders etc.), semicircle spheroid, semiellipsoid, regular parabolic surface post (ball) body;
Example: list three kinds of three-dimensional micro-nano light trapping structures put into production:
A. the shape of three-dimensional micro-nano holographic structure is regular pyramid array, and pyramid base length and width are equal, is 50 μm, is highly 23 μm, and aspect ratio is 1:2, and the pyramid structure cycle is 60 microns;
B. the shape of three-dimensional micro-nano holographic structure is the regular pyramid array separated with spine, and pyramid base length and width are equal, are 50 μm, be highly 10 μm, aspect ratio is 1:5, and the pyramid structure cycle is 70 microns, do to separate with the ridge of projection between pyramid, spine height is 10 μm;
C. the shape of three-dimensional micro-nano holographic structure is moth eye array structure, and moth eye basal diameter 300 microns is high 150 microns, and aspect ratio is 1:2, the cycle 300 microns;
Above-described three-dimensional micro-nano light trapping structure, its function is to import incident light and to transmit effectively to control, and makes solar battery sheet absorb more luminous energy, thus the more electricity of output.Three-dimensional micro-nano light trapping structure simultaneously can extend effective generating dutation and weaken solar module to the dependence of incident angle of light and have hydrophobicity effect, and then acts on from many aspects, the overall energy output of raising solar module.
Micro-nano light trapping structure principle Analysis disclosed in this invention is as follows:
Above-mentioned front surface photic zone is attached on colloid seal material layer, and the refractive index of bi-material closely, can be considered transparent integrated after lamination.Have the photic zone upper surface of micro-nano light trapping structure, when incident ray wave-length coverage is 400nm to 1100nm, photic zone upper surface reflectivity is lower than 4%.Meanwhile, the micro-nano light trapping structure that above-mentioned front surface photic zone exists, compared with planar front surface photic zone, can increase effective transmissometer area and more incident ray is absorbed.
As shown in Figure 2, regarded as by incident ray and be made up of photon, so inner at the micro nano structure periodically with specific morphology, photon retard motion, will by roundtrip, refraction.Photon will be restricted in solar module, make more photon arrive solar cell lamella.At solar cell lamella by photoelectric conversion effect, produce more electric power.Thus, front surface photic zone achieves the effective control importing incident ray and transmit, and plays light trapping effect, reaches the luminous energy that maximized absorption comes from solar radiation, and be converted into more electric energy.
2, colloid seal material layer
Colloid seal material is for the front surface layer at solar module, provides and cohere between solar cell lamella and back support plate.Under high temperature and strong ultraviolet radiation, the physicochemical properties of colloid seal material are stable, and are optical clear and low thermal resistance.
The colloid seal material used disclosed in the present invention is ethylene-vinyl acetate copolymer, and english name is Ethylene Vinyl Acetate(EVA).The EVA that the present invention openly uses is a kind of hot melt adhesive stick, and thickness is between 0.4 millimeter to 0.6 millimeter, and surfacing, thickness is even, includes crosslinking agent.This material is flake, at front surface layer and solar cell lamella, between solar cell lamella and back support plate.
Through hot pressing, there is melting adhered and crosslinking curing in EVA, and becomes completely transparent.After vacuum hotpressing, can good cementability be formed between EVA and ETFE, form optically transparent one.EVA after solidification can bear Atmosphere changes and have elasticity, by dense for solar cell lamella real real encapsulating, and and front surface layer, back support harden to be integrated seal protection formed to component internal solar battery sheet.In addition, ETFE has extremely strong anti-steam permeability, can delay the aging jaundice of EVA, extends the solar module life-span, improves solar module power generating quality.
Except EVA, also can use TPUE rubber TPU(Thermoplastic polyurethanes) be colloid seal material.
3, solar cell lamella
The solar battery sheet adopted is monocrystaline silicon solar cell or polysilicon solar cell.For polysilicon solar battery slice, the solar battery sheet used disclosed in the present invention is of a size of 156mm*156mm polysilicon solar battery slice, and electricity conversion is demarcated as 17.6%.The operating voltage of monolithic solar cell sheet is about 0.5V.Solar cell lamella is the solar battery sheet of some is carried out connection in series-parallel and forms after drawing connecting electrode line.The solar battery sheet number comprised in the single photovoltaic module used disclosed in the present invention is: 10,20,30 or 60.
Solar battery sheet operation principle is: be matrix with Semiconducting Silicon Materials, utilizes diffusion technology in silicon crystal, to mix appropriate boron, the impurity such as phosphorus, is formed pnknot.When after solar light irradiation silicon crystal, pnelectron-hole pair is produced in knot.? pnunder the effect of knot internal electric field, electron-hole pair is separated.Hole tends to ptype district, electronics tends to ntype district, thus pnelectrical potential difference is formed in knot.Now, connect external circuit, get final product generation current.
4, back support plate
Back support plate material disclosed in this invention be toughened glass or other there is the polymeric material of good mechanical strength, as polycarbonate.The effect of back support plate material is the support protective effect giving solar cell lamella back lifting face.Toughened glass have good environment resistant erosiveness, strong insulating capacity and and EVA can form good bonding.The toughened glass of above-mentioned use, its tempering performance meets GB GB9963-88, or the solar module shock resistance after encapsulation reaches the performance index specified in the silicon solar cell environmental test method of GB GB9535-88 ground.
5, terminal box
Terminal box disclosed in this invention is made up of ABS, and is added with anti-aging and anti-ultraviolet radiation agent, can guarantee that solar module reaches out of doors more than 25 years and do not occur aging fracture phenomena useful life.Binding post is become by the high connductivity solution copper of outer nickel coating, can guarantee the reliable of electrically conducting and electrical connection.Terminal box silica gel is bonded in back support plate surface.
6, aluminum alloy frame
Frame adopts hard aluminium alloy processed to make, and surface oxide layer thickness is greater than 10 microns, can ensure that environment reaches the useful life of more than 25 years out of doors.
7, laminating technology
By sequentially stacked for layer each in solar cell chip module, be followed successively by front surface layer (ETFE), colloid seal layer (EVA), solar cell lamella, colloid seal layer (EVA), back support plate (toughened glass).The nickel mould and assisted heating device with three-dimensional micro-nano structure are put on ETFE, then put into solar module laminating machine together with stacked good solar module.Pressure is applied by laminating machine after assisted heating device being heated to 260 degrees Celsius, force value is an atmospheric pressure, the semi-finished product solar module of zone of heating poststack is stopped to put into laminating machine subsequently at once, air in assembly is extracted out by vacuumizing by solar module laminating machine, then being heated to 140 degrees Celsius makes EVA melt, by ETFE, solar cell lamella and glass bond together, after keeping the time of temperature-pressure to be about 20 minutes, complete component lamination, send machine chamber, carry out after cooling stretching out the burr be solidified to form due to pressure after EVA when chamfered edge removes lamination melts, load onto terminal box and aluminum alloy frame at random, complete the making of novel high energy output crystal silicon solar batteries assembly.
Laminating technology is that solar module produces a crucial step.Laminating temperature disclosed in this invention, lamination times determine according to the character of ETFE and EVA.Therefore, lamination times disclosed in this invention is 20 minutes.Wherein the pumpdown time is 5 minutes, and the heat-insulation pressure keeping time is 15 minutes.Pressure is an atmospheric pressure.Curing temperature is 140 degrees centigrade.
8, frame up
After lamination, frame up to solar module with aluminum alloy frame, increase the intensity of assembly, further sealed solar energy battery component, extends its useful life.The gap silicone resin of frame and assembly is filled, to ensure its sealing.
9, Welding junction box
At module backside lead-in wire place's welding box, be beneficial to the connection between solar module and other equipment or other solar modules.Bonding area is greater than 80% of the gross area, and terminal box 1521 silica gel certain proportions are filled.
Described in novel high energy output crystal silicon (monocrystalline/polycrystalline silicon) solar module performance evaluation proposed by the invention is summarized as follows.
Novel high energy output crystal silicon (monocrystalline/polycrystalline silicon) solar module structure disclosed in this invention is the novel solar battery assembly combining photonic crystal principles, crystal silicon solar electricity generating principle and Application of micron.It is come from adjustment and the change of the structure of solar module having been carried out to novelty that assembly energy output disclosed in this invention improves, and is successfully incorporated into by three-dimensional photon crystal structure in crystal silicon solar batteries assembly ripe at present.
The solar module front surface material used disclosed in the present invention is macromolecule polymer material.Compare existing crystal silicon solar batteries assembly, utilize the tempering coated glass that polymer replaces traditional front surface used, promote light transmittance on the one hand, simultaneously effective production control cost.Due to plasticity and the ductility of polymer, suitable controlled temperature, pressure, in the heat-insulation pressure keeping time, after vacuum lamination, the micro-nano light trapping structure of polymeric material upper surface, be not damaged, do not produce deformation, can be incorporated in solar module smoothly.
In general, when incident ray to the surface of solar module in vertical (incident angle is 90 degree) or close to vertical incidence time, the solar energy radiation amount that component internal solar battery sheet receives maximizes.Solar battery sheet effectively absorbs maximization to luminous energy, and photoelectric conversion result is best.But, when incident angle is very little time, the light dropping on solar module surface can be reflected in a large number, make solar module can not absorb enough luminous energy, cause the minimizing of solar module energy output or solar module not to work, such situation occurs in morning and the dusk of one day.Therefore solar module has very large dependence of angle to incident light.
Micro nano structure is stereoeffect.Micro-nano light trapping structure is introduced in solar module, the micro-nano light trapping structure existed by surface is come incident light scattering, play strong antireflection effect, thus reduce or greatly eliminate solar module to the dependence of incident angle of light and the negative effect to solar module energy output.For example, when sunlight ray is incident to photovoltaic cell with a very little angle, a certain part surface of micro-nano light trapping structure can with 90 degree or close to the angle faces of 90 degree to incident light, light can be fully absorbed with very little loss.Other light is because incided other parts of micro-and nano-structural surface and then reflected, and light of its reflection can with close on the micro nano structure of the incident angle incidence so far structure periphery of 90 degree, thus also imported on solar battery sheet by low-loss absorption.
In sum, the introducing of micro-nano light trapping structure makes solar module significantly reduce the dependence of solar module to angle of incident light, extend effective generating dutation, solar module energy output is promoted in a large number, to photovoltaic plant construction and operation, revolutionary impact will be brought.

Claims (4)

1. one kind high energy output crystal silicon solar batteries assembly, it is characterized in that: comprise the front surface layer, colloid seal layer, crystal silicon solar batteries lamella, colloid seal layer, the back support plate that stack gradually from top to bottom, it is characterized in that: described front surface layer material is ethylene-tetrafluoroethylene copolymer film, ethylene-tetrafluoroethylene copolymer film has three-dimensional micro-nano array structure;
Described colloid seal layer is ethylene-vinyl acetate copolymer or TPUE rubber TPU;
Described crystal silicon solar batteries lamella is monocrystaline silicon solar cell or polysilicon solar cell;
Described back support plate be toughened glass or other there is the polymeric material of good mechanical strength.
2. one according to claim 1 high energy output crystal silicon solar batteries assembly, it is characterized in that: the thickness of described front surface layer is 25 microns or 50 microns, the three-dimensional micro-nano array structure formed on the ethylene-tetrafluoroethylene copolymer film of front surface layer has following three kinds:
(1), the shape of three-dimensional micro-nano holographic structure is regular pyramid array, and pyramid base length and width are equal is 50 μm, is highly 23 μm, and aspect ratio is 1:2, and the pyramid structure cycle is 60 microns;
(2), the shape of three-dimensional micro-nano holographic structure is the regular pyramid array separated with spine, pyramid base length and width are equal is 50 μm, be highly 10 μm, aspect ratio is 1:5, the pyramid structure cycle is 70 microns, do to separate with the ridge of projection between pyramid, spine height is 10 μm;
(3), the shape of three-dimensional micro-nano holographic structure is moth eye array structure, and moth eye basal diameter 300 microns, high 150 microns, aspect ratio is 1:2, the cycle 300 microns.
3. one according to claim 1 high energy output crystal silicon solar batteries assembly, is characterized in that: also include the aluminum alloy frame of frame outside each layer, and is bonded in the terminal box be connected on back support plate and with crystal silicon solar batteries lamella.
4. a manufacture craft for high energy output crystal silicon solar batteries assembly, is characterized in that: comprise the following steps:
(1), first solar module is formed well by stacked in order for each layer, then the nickel mould and assisted heating device with three-dimensional micro-nano structure are put on ethylene-tetrafluoroethylene copolymer film, and put into solar module laminating machine together with stacked good solar module; Apply pressure by solar module laminating machine after the assisted heating device of solar module laminating machine is heated to 260 degrees Celsius, force value is an atmospheric pressure, stops heating subsequently at once;
(2), air in solar module is extracted out by vacuumizing by solar module laminating machine, then being heated to 140 degrees Celsius makes colloid seal layer melt, by ethylene-tetrafluoroethylene copolymer film, crystal silicon solar batteries lamella and back support plate bond together, after keeping the time of temperature-pressure to be about 20 minutes, complete component lamination, send machine chamber, to carry out after cooling when chamfered edge removes lamination after colloid seal melting layer because pressure stretches out the burr be solidified to form, load onto terminal box and aluminum alloy frame at random, complete the making of high energy output crystal silicon solar batteries assembly.
CN201510189026.XA 2015-04-17 2015-04-17 High-electric energy production crystalline silicon solar cell assembly and manufacturing technology thereof Pending CN104966752A (en)

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CN107768465A (en) * 2017-09-29 2018-03-06 宝鸡长达电气科技有限公司 A kind of solar cell module and preparation method thereof
CN108091716A (en) * 2017-12-11 2018-05-29 浙江晶科能源有限公司 A kind of solar double-glass assemblies
CN110299419A (en) * 2019-06-27 2019-10-01 深圳市上古光电有限公司 A kind of coating technique of new type solar energy flexible unit
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Application publication date: 20151007