Perovskite solar module encapsulating structure and method for packing
Technical field
The present invention relates to a kind of encapsulating structure of solar module, particularly relate to a kind of perovskite solar module encapsulating structure and method for packing thereof, belong to solar module technical field.
Background technology
Increasingly serious along with global ecological environment and energy shortage problem, solar energy power generating is subject to various countries' common concern.At present, the stable about 19%(monocrystalline of battery conversion efficiency of industrialization crystalline silicon) and 17 ~ 18%(polycrystalline), there is the bottlenecks of technology and cost in further raising efficiency.Although some high-efficiency silicon cells technology are constantly proposed, in these efficient solar battery complicated process of preparation, volume production, quality is wayward, high to equipment requirement, therefore, is difficult to realize volume production.Except silicon solar cell, the compound film battery, organic photovoltaic cell, dye-sensitized solar cells etc. of other type, its battery conversion efficiency does not have remarkable breakthrough for many years.In recent years, the novel battery technology that one is referred to as " perovskite solar cell " causes the extensive concern of scientific research personnel, and its battery conversion efficiency is promoted to current 20.1% from 3.8% within short time several years, and constantly refreshes in units of the moon.Perovskite system refers to a class and perovskite CaTiO
3there is the general name of the organic-inorganic hybrid system of similar crystal structure.Perovskite has complicated electrical and optical properties, and its core photoelectric conversion material has the feature of cheapness, easily preparation, and this is for it is extensive, low cost manufacture provides possibility.
Solar cell itself is subject to the impact of steam in environment, oxygen, dust, corrosive chemical and external impacts etc., causes damaging, hydraulic performance decline even lost efficacy, cannot work in natural environment steadily in the long term.Single solar cell electric current and voltage output value less, the requirement of practical application to power output cannot be met.Therefore, by solar cell series and parallel, packaging protection must be implemented, extraction electrode wire, make several watts of photovoltaic electrification components to hundreds of watts of different output powers.General, the structure of solar cell package assembling comprises the parts such as back substrate, solar cell, interconnect circuit, packaging plastic, face glass plate, frame.Component package technology is directly connected to its power stage, working life, reliability and cost.
Although the efficiency of perovskite solar cell constantly promotes, compare conventional crystal silicon or thin film solar cell, it is more subject to such environmental effects.In high humidity environment, water permeation, in the perovskite solar cell not having to encapsulate, makes perovskite functional material decompose; Long-time pyroprocess can change calcium titanium ore bed material or organic cavity transmission layer was lost efficacy, and causes solar cell performance to decay rapidly.Therefore, titanium ore solar cell long-term stable operation, needs the component package technology adapted.Traditional component package technology, water proofing property possibly cannot meet the requirement of perovskite solar cell; Usually need high-temperature operation in encapsulation process, the performance of perovskite solar cell can be affected.This proposes higher technical requirement to component package technology, needs to design a kind of encapsulating structure and method for packing being applicable to perovskite solar cell.
Summary of the invention
The present invention is directed in prior art, lack specially for encapsulating structure and the method for packing of perovskite solar cell, a kind of perovskite solar cell encapsulating structure and method for packing are provided, on the basis not affecting perovskite solar cell performance, assembly is encapsulated, avoid the factor such as steam, high temperature, chemical corrosion, external carbuncle to the adverse effect of perovskite solar cell, improve the reliability of perovskite solar module, promote development and the commercial application of perovskite solar cell.
For this reason, the present invention adopts following technical scheme:
A kind of perovskite solar cell encapsulating structure, for some perovskite solar cells (2) are packaged into photovoltaic module, some perovskite solar cells are by interconnected conducting wire (3) series connection and/or parallel connection, comprise back substrate (1), packaging plastic and face glass (6), it is characterized in that: described packaging plastic comprises the solar cell packaging plastic (4) for being encapsulated by single solar cell and the component package glue (5) for jointly being encapsulated by some solar cells, described solar cell packaging plastic (4) adopts water white epoxies packaging plastic, silicone based packaging plastic, polyurethane packaging plastic or ultraviolet photo-curing packaging plastic, described component package glue (5) adopts ethylene-vinyl acetate copolymer (EVA), polyvinyl butyral resin (PVB) or POE (POE), back substrate filled by component package glue, perovskite solar cell, interconnected conducting wire, solar cell packaging plastic, space between face glass plate.
Further, described solar cell packaging plastic (4) coated perovskite solar cell at least in part.
Further, described back substrate (1) adopts TPT, TPE, FPF, FFC, PET, FFC, BBP, EVA, PET, THV, glass or pottery.
Further, described some perovskite solar cell (2) tilings are placed, mutually not overlapping.
Further, described some perovskite solar cells (2) are connected into several series connection group by interconnected conducting wire, in parallel between several series connection group, then draw positive pole and negative pole through confluxing.
Further, reinforcing frame (7) is also provided with in the periphery of photovoltaic module.
Another aspect of the present invention, provides a kind of perovskite solar cell method for packing, comprises the steps:
A., multiple perovskite solar cell is provided;
B. tile each perovskite solar cell of arranged distribution, uses conductor wire that the positive electrode of perovskite solar cell and negative electrode series connection are formed several series connection group, in parallel between several series connection group, then draw positive pole and negative pole through confluxing;
C. configure solar cell packaging plastic, it be coated with and cover each perovskite solar cell at least in part, solidifying described solar cell packaging plastic;
D. by the perovskite solar cell horizontal through step C process overleaf substrate, and the sensitive surface making perovskite solar cell upward;
E. overleaf substrate and perovskite solar cell cover one deck component package glue;
F. horizontal face glass on component package glue, shape, the area of the shape of face glass, area and back substrate are identical, form the lamination setting gradually back substrate, perovskite solar cell, interconnected conducting wire, solar cell packaging plastic, component package glued membrane, glass front plate from bottom to top;
G. above-mentioned lamination is sent into hot pressure-bearing cavity, implement heating pressure-bearing, curing assembly packaging plastic, the temperature range of heating is 100 to 180 DEG C, and time range is 10 to 120 minutes.
Further, in step C, described solar cell packaging plastic adopts water white epoxide-resin glue, and by the proportional arrangement epoxide-resin glue of A:B=2:1, control temperature scope is 30-80 DEG C, and the time is 2-6 hour, solidification solar cell packaging plastic.
Further, in step e, described component package glue adopts POE glued membrane.
Further, also comprise step H, overleaf substrate and face glass panel edges assembling frame, and with the gap between silica gel sealing frame and panel.
Perovskite solar cell encapsulating structure of the present invention, can protect perovskite solar cell effectively, avoids the factor such as steam, high temperature, chemical corrosion, external carbuncle to the adverse effect of perovskite solar cell, improves the reliability of perovskite solar module; By encapsulating separately each perovskite solar cell, solar cell packaging plastic selects the encapsulating material with good waterproof and dustproof, anti-external impacts, heat dissipation characteristics, good to the protected effect of solar cell; Solar cell packaging plastic can solidify at normal temperatures, heating cure (temperature of heating can lower than 100 DEG C) or ultraviolet radiation-curable encapsulation process be without the need to long-time pyroprocess, ensure that perovskite solar cell performance in component package process is subsequently unattenuated, and excellent; The saturating glass of good performance of waterproof, seepage control, polymer panel and component package material is adopted respectively in the end face of assembly, bottom surface and surrounding, effectively can stop steam invasion and attack in natural environment, have that good UV resistance is aging simultaneously, chemical corrosion, external force wearing and tearing performance, ensure perovskite solar module long-term stable operation.Perovskite solar module method for packing provided by the invention, compatiblely can use traditional solar module encapsulation technology, for the application of perovskite solar module provides a kind of feasible scheme.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein, 1 is back substrate, and 2 is perovskite solar cell, and 3 is interconnected conducting wire, and 4 is solar cell packaging plastic, and 5 is component package glue, and 6 is face glass, and 7 is frame.
Embodiment
In order to make those skilled in the art person better understand the present invention program, carry out clear, complete description below in conjunction with accompanying drawing to technical scheme of the present invention, part same as the prior art in the present invention is with reference to prior art.
Embodiment 1:
As shown in Figure 1, perovskite solar cell encapsulating structure of the present invention, for some perovskite solar cells 2 are packaged into photovoltaic module, some perovskite solar cells 2 tile and place, mutually not overlapping; Some perovskite solar cells 2 are connected into several series connection group by interconnected conducting wire 3, in parallel between several series connection group, then draw positive pole and negative pole through confluxing.This encapsulating structure comprises: back substrate 1, packaging plastic and face glass 6, packaging plastic comprises the solar cell packaging plastic 4 for being encapsulated by single solar cell and is used for the component package glue 5 that jointly encapsulated by some solar cells, solar cell packaging plastic 4 is coated perovskite solar cell at least in part, solar cell packaging plastic 4 adopts water white epoxies packaging plastic, silicone based packaging plastic, polyurethane packaging plastic or ultraviolet photo-curing packaging plastic, component package glue 5 adopts ethylene-vinyl acetate copolymer (EVA), polyvinyl butyral resin (PVB) or POE (POE), back substrate filled by component package glue, perovskite solar cell, interconnected conducting wire, solar cell packaging plastic, space between face glass plate.Back substrate 1 adopts TPT, TPE, FPF, FFC, PET, FFC, BBP, EVA, PET, THV, glass or pottery; Also be provided with in the periphery of photovoltaic module and reinforce frame 7.
Embodiment 2:
Another aspect of the present invention, provides a kind of perovskite solar cell method for packing, comprises the steps:
A., multiple perovskite solar cell is provided;
B. tile each perovskite solar cell of arranged distribution, uses conductor wire that the bottom electrode of perovskite solar cell and top electrode series connection are formed several series connection group, in parallel between several series connection group, then draw positive pole and negative pole through confluxing;
C. in the present embodiment, solar cell packaging plastic adopts water white epoxide-resin glue, and by the proportional arrangement epoxide-resin glue of A:B=2:1, control temperature is 80 DEG C, and the time is 2 hours, solidification solar cell packaging plastic;
D. by the perovskite solar cell horizontal through step C process overleaf substrate, and the sensitive surface making perovskite solar cell upward;
E. overleaf substrate and perovskite solar cell cover one deck component package glue, in the present embodiment, component package glue adopts POE glued membrane;
F. horizontal face glass on component package glue, shape, the area of the shape of face glass, area and back substrate are identical, form the lamination setting gradually back substrate, perovskite solar cell, interconnected conducting wire, solar cell packaging plastic, component package glued membrane, glass front plate from bottom to top;
G. above-mentioned lamination is sent into hot pressure-bearing cavity, implement heating pressure-bearing, curing assembly packaging plastic, the temperature of heating is 150 °, and the time is 5 minutes.
H. substrate and face glass panel edges assembling aluminum alloy frame overleaf, and with the gap between silica gel sealing frame and panel.
Embodiment 3:
The difference of the present embodiment and embodiment 2 is:
In step G, the temperature of described heating is 100 °, and the time is 20 minutes.
Certainly, the present invention also has other execution modes, is only preferred embodiment of the present invention above, is not used for limiting practical range of the present invention, and all equivalences done according to the content of the application's the scope of the claims change and modify, and all should be technology category of the present invention.