CN110473924A - The manufacturing method of imbrication component, solar battery sheet and imbrication component - Google Patents
The manufacturing method of imbrication component, solar battery sheet and imbrication component Download PDFInfo
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- CN110473924A CN110473924A CN201910837455.1A CN201910837455A CN110473924A CN 110473924 A CN110473924 A CN 110473924A CN 201910837455 A CN201910837455 A CN 201910837455A CN 110473924 A CN110473924 A CN 110473924A
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- solar battery
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared 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
- H01L31/02—Details
- H01L31/0224—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared 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
- H01L31/04—Semiconductor devices sensitive to infrared 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
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention relates to the manufacturing methods of a kind of imbrication component, solar battery sheet and imbrication component.Imbrication component includes multiple solar battery sheets, solar battery on piece is provided with positive electrode and back electrode, one positive electrode of the adjacent solar battery sheet of any two directly contacts with another back electrode and forms interconnecting piece to realize conductive connection, and the receiving portion for accommodating binder is provided at interconnecting piece.According to the present invention, conductive interconnections are realized by the direct contact of positive electrode to each other and back electrode between solar battery sheet, thus can be omitted conductive conducting resinl, to avoid the various problems that may be generated by conducting resinl.Also, solar battery on piece is provided with the receiving portion for accommodating binder, so that binder can be steadily positioned between two adjacent solar battery sheets, promotes the fastness of imbrication component.
Description
Technical field
The present invention relates to energy field more particularly to a kind of manufactures of imbrication component, solar battery sheet and imbrication component
Method.
Background technique
As the conventional fossil energy consumption speed such as worldwide coal, petroleum, natural gas is accelerated, ecological environment constantly deteriorates,
Especially greenhouse gas emission leads to increasingly serious Global climate change, and the sustainable development of human society has been subjected to seriously
It threatens.Respective energy development strategy is formulated in countries in the world one after another, to cope with the finiteness and exploitation of conventional fossil energy resources
Utilize bring environmental problem.Solar energy relies on its reliability, safety, popularity, longevity, the feature of environmental protection, resource adequacy
The characteristics of have become one of most important renewable energy, be expected to become the mainstay of the following global power supply.
During new round energy revolution, it is emerging that China's photovoltaic industry has grown into the strategy with international competitive advantage
Industry.However, theCourse of PV Industry still faces problems and challenge, transfer efficiency and reliability are to restrict theCourse of PV Industry
Maximum technology barrier, and cost control and scale economically form restriction.Core of the photovoltaic module as photovoltaic power generation
Center portion part, improving its transfer efficiency to develop efficient component is inexorable trend.Various efficient components are emerged in large numbers currently on the market,
Such as imbrication, half, more main grids, double-side assembly.As the application places of photovoltaic module and application area are more and more extensive, to it
Reliability requirement is higher and higher, especially needs in some severe or extreme weather prone areas using efficient, high reliability
Photovoltaic module.
Widely popularize and background using solar energy green energy resource under, imbrication component utilizes the low-loss electricity of low current
Principle (square direct proportionality with operating current is lost in photovoltaic module power) is so that component power loss is dropped significantly
It is low.It generates electricity secondly by piece pitch area is made full use of in battery component, unit area self-energy density is high.In addition mesh
It is preceding to have used the conductive adhesive with rubber elastomer characteristics instead of general components photovoltaic metal welding band, due to photovoltaic metal welding
Band shows higher series resistance in full wafer battery and the stroke of conductive adhesive current loop will be much smaller than using welding
Mode, so that imbrication component finally be made to become efficient component, while outdoor application reliability is compared with conventional photovoltaic assemblies performance
Performance is more excellent, because imbrication component avoids metal welding band and answers battery and battery interconnection location and other doab domains
Power damage.It is mutual using metal welding band especially under the dynamic of high/low temperature alternation (load of the natures such as wind, snow acts on) environment
Join the general components failure probability of encapsulation far more than using the crystal silicon battery small pieces after the interconnection cutting of the conductive adhesive of elastomer
The imbrication component of encapsulation.
The prevailing technology of current imbrication component is using the cell piece after conductive adhesive interconnection cutting, and conducting resinl is mainly by leading
It is electric mutually mutually to be constituted with bonding.Wherein conductive phase is mainly made of noble metal, such as fine silver granules or wicker copper, silver-colored nickel coat, Yin Baobo
The particles such as glass are simultaneously used to rise electric action between solar battery sheet, and grain shape and distribution are to meet optimal electrical conduction
On the basis of, it is more at present in the majority using 10um grades of D50 < of sheet or class ball-type combination silver powder.Bonding mutually mainly has with weather-proof
Property macromolecule resin quasi polymer constitute, select acrylic resin, organosilicon generally according to adhesive strength and weathering stability
Resin, epoxy resin, polyurethane etc..In order to make conductive adhesive reach lower contact resistance and lower volume resistivity and
Height is bonded and keeps long-term excellent weathering characteristics, the design that general conducting resinl producer can be mutually formulated by conductive phase with bonding
It completes, to guarantee the stability of imbrication component performance under the test of initial stage environmental attack and long-term outdoor practical application.
And for realizing the battery component of connection by conducting resinl, after being encapsulated, outdoors in actual use by
To environmental attack, such as high/low temperature alternation expands with heat and contract with cold the relative displacement generated between conducting resinl.It is the most seriously exactly to cause
Existing electric current virtual connection even open circuit, main cause are typically all because concatenation ability is weak each other after combination of materials.Concatenation ability is weak
It is mainly manifested in processing procedure conducting resinl operation and needs a technological operation window, this window is relatively in actual production process
It is narrow, it is highly susceptible to the influence of environmental factor, such as the temperature and humidity of Work places, the length of time after gluing in air entrapment
Etc. can all conductive glue be allowed to lose activity.Hold simultaneously for being changed under dispensing, glue spraying or printing technology by glue self-characteristic
Easily occur being glued uneven deficient phenomena, larger hidden danger is had to product reliability.Secondly conducting resinl mainly by macromolecule resin and
A large amount of noble metal powders are constituted, with high costs and destroy ecological environment to a certain extent and (production of noble metal and process to ring
Border pollution is larger).Furthermore conducting resinl belongs to paste, has certain mobility during sizing or lamination, it is very easy to
Excessive glue causes imbrication interconnected battery string positive and negative anodes short-circuit.
That is, existing and being coupled to each other by force for most of manufactured imbrication components using conductive adhesive mode
Weak feature is spent, for processing procedure to environmental requirement height, technique uses the problems such as easy excessive glue is short-circuit, and use cost is high, and production efficiency is low.
Thus need to provide the manufacturing method of a kind of imbrication component, solar battery sheet and imbrication component, at least partly
Ground solves the above problems.
Summary of the invention
The object of the present invention is to provide the manufacturing methods of a kind of imbrication component, solar battery sheet and imbrication component, make
The positive electrode and back electrode for obtaining two solar battery sheets can be contacted directly to realize and be conductively connected.Also, solar battery
On piece is provided with the receiving portion for accommodating binder, so that binder can steadily be positioned in adjacent two too
Between positive energy cell piece, the fastness of imbrication component is promoted.
According to an aspect of the invention, there is provided a kind of imbrication component, the imbrication component includes multiple solar-electricities
Pond piece, multiple solar battery sheets are arranged successively with imbricated way in a first direction and are fixed to one another by binder,
The solar battery sheet includes base sheet, and the positive electrode extended in a second direction is provided on the top surface of described matrix piece；
The back electrode extended along the third direction for being parallel to the second direction, any two are provided on the bottom surface of described matrix piece
One positive electrode of the adjacent solar battery sheet is directly contacted with another the back electrode and the company of being formed
Socket part to realizing conductive connection,
The receiving portion for accommodating the binder is provided at the interconnecting piece.
In one embodiment, described accommodation section is arranged at least one of the positive electrode and the back electrode,
And there is the opening towards solar battery sheet described in another.
In one embodiment, described when being provided with described accommodation section on the positive electrode and the back electrode
The opening for the receiving portion being arranged at positive electrode and the opening for the receiving portion being arranged at the back electrode are aligned or not aligned with.
In one embodiment, described accommodation section includes running through along the fourth direction perpendicular to the solar battery sheet
The base portion of electrode.
In one embodiment, described accommodation section further includes along the fourth direction through described in solar battery sheet
The throughhole portions of base sheet.
In one embodiment, the radial dimension of the base portion of described accommodation section is greater than or equal to the diameter of the throughhole portions
To size.
In one embodiment, the binder protrudes from the solar battery sheet from the throughhole portions.
In one embodiment, the radial dimension of the part on the prominent solar battery sheet surface of the binder be greater than or
Equal to the radial dimension of the throughhole portions.
In one embodiment, the binder extends in the throughhole portions but does not protrude from solar battery sheet
Surface.
In one embodiment, described accommodation section is multiple.
In one embodiment, described accommodation section further include extend in described matrix piece along the fourth direction it is blind
Hole.
In one embodiment, described accommodation section includes not passing through along the fourth direction perpendicular to the solar battery sheet
Wear the base portion of electrode.
In one embodiment, the binder is that conducting resinl or the binder do not have electric conductivity.
Another aspect of the present invention provides a kind of solar battery sheet, and multiple solar battery sheets can be
It is sequentially connected on one direction with imbricated way, the solar battery sheet includes base sheet, is set on the top surface of described matrix piece
It is equipped with the positive electrode extended in a second direction；It is provided on the bottom surface of described matrix piece along being parallel to the of the second direction
The back electrode that three directions extend, the solar battery sheet are configured to imbricated way and another solar battery sheet
The positive electrode of the two solar battery sheets and back electrode directly contact and form interconnecting piece to realizing conductive connection when being connected,
The solar battery sheet is provided with the receiving portion for accommodating the binder at the interconnecting piece.
In one embodiment, the positive electrode and back electrode that the solar battery sheet is arranged in described accommodation section are extremely
On one few, and there is the opening towards solar battery sheet described in another.
In one embodiment, described when being provided with described accommodation section on the positive electrode and the back electrode
The opening for the receiving portion being arranged at positive electrode and the opening for the receiving portion being arranged at the back electrode are aligned or not aligned with.
In one embodiment, described accommodation section includes running through along the fourth direction perpendicular to the solar battery sheet
The base portion of electrode.
In one embodiment, described accommodation section further includes along the fourth direction through described in solar battery sheet
The throughhole portions of base sheet.
In one embodiment, the radial dimension of the base portion of described accommodation section is greater than or equal to the diameter of the throughhole portions
To size.
In one embodiment, described accommodation section is multiple.
In one embodiment, described accommodation section is the blind hole extended in described matrix piece along the fourth direction.
In one embodiment, described accommodation section includes not passing through along the fourth direction perpendicular to the solar battery sheet
Wear the base portion of electrode.
An additional aspect of the present invention provides a kind of manufacturing method for manufacturing imbrication component, and the manufacturing method includes such as
Lower step:
Manufacture multiple solar battery sheets according to above-mentioned any one scheme；
Apply binder in the corresponding receiving portion of each solar battery sheet；
The multiple solar battery sheet is arranged, be fixed to each other and made arbitrarily with imbricated way along the first direction
One positive electrode in two adjacent solar battery sheets directly contacts to realize conductive connect with another back electrode
It connects.
In one embodiment, the step of manufacturing the multiple solar battery sheet include:
Full wafer solar battery sheet is pre-processed；
The full wafer solar battery sheet after pretreatment is cut into small pieces to form the multiple solar-electricity
Pond piece.
In one embodiment, described to include: to the pretreated step of full wafer solar battery sheet progress
In the full wafer solar battery on piece print positive electrode and back electrode；
The first receiving portion is processed at the positive electrode, and/or the second receiving is processed at the back electrode
Portion.
According to the present invention, when interconnecting solar battery sheet at imbrication component, by each other between solar battery sheet
Between positive electrode and back electrode direct contact and realize conductive interconnections, thus can be omitted conductive conducting resinl.In this way,
Environmental attack, high/low temperature alternation, expanding with heat and contract with cold etc. is easily destroyed the factor of conducting resinl and just will not influence imbrication component of the invention,
Imbrication component is not easy electric current virtual connection and open circuit occur.Also, since conducting resinl need not be arranged, then excessive glue and caused by imbrication
The problems such as positive and negative anodes of component are breaking would not also occur.In addition, the electric conductivity due to not requiring binder, the life of imbrication component
Cost is produced also to be minimized.Also, solar battery on piece is provided with the receiving portion for accommodating binder, and receiving portion can have
There are various structures, so that binder can be steadily positioned between two adjacent solar battery sheets, is promoted folded
The fastness of watt component.
Detailed description of the invention
Above-mentioned and other purposes, feature, advantage and function for a better understanding of the present invention, can be with reference to institute in attached drawing
The preferred embodiment shown.Identical appended drawing reference refers to identical component in attached drawing.It should be appreciated by those skilled in the art that attached
Figure is intended to schematically illustrate the preferred embodiment of the present invention, does not have an any restrictions effect to the scope of the present invention, each in figure
A component is not necessarily drawn to scale.
Fig. 1 is to be omitted first in figure according to a kind of schematic diagram of the solar battery sheet of preferred embodiment of the present invention
Receiving portion and the second receiving portion；
Fig. 2 and Fig. 3 is the top signal that two solar battery sheets in the preferred embodiment are interconnected with imbricated way
Figure and bottom schematic view；
Fig. 4 is the imbrication component that the solar battery sheet in present embodiment is mutually unified into imbricated way；
Fig. 5 be Fig. 4 in along line B-B interception schematic cross-section a part, but show it is two adjacent too
It is positive can cell piece and binder therebetween not yet contact the state being bonded together, to show receiving portion；
Fig. 6 is a part of the schematic cross-section along line A-A interception in Fig. 4；
Fig. 7 and Fig. 8 is the diagram of two alternatives of Fig. 6.
Specific embodiment
Referring now to the drawings, it describes the specific embodiments of the present invention in detail.As described herein is only according to this hair
Bright preferred embodiment, those skilled in the art can expect can be realized this hair on the basis of the preferred embodiment
Bright other modes, the other modes equally fall into the scope of the present invention.
The present invention provides a kind of imbrication component, solar battery sheet and the method for manufacturing the imbrication component, Fig. 1 to Fig. 8
Show the various aspects of several preferred embodiments of the invention.
Fig. 1 shows the solar battery sheet 1 of a preferred embodiment of the present invention, and Fig. 4 is the sun in multiple Fig. 1
The imbrication component 30 that energy cell piece 1 is arranged in imbricated way.Firstly the need of explanation, hereinafter it will be mentioned that " first party
To " be understood to be the arragement direction of each solar battery sheet 1 in imbrication component 30, substantially with it is each substantially rectangular
The width direction of solar battery sheet 1 is consistent, and first direction is shown by D1 in figs. 2,3 and 4；" second direction " can be by
A length direction being not understood as on the top surface 25 of substantially rectangular solar battery sheet 1, second direction are shown in Fig. 1 by D2
Out；" third direction " is understood to be a length direction on the bottom surface 24 of substantially rectangular solar battery sheet 1, the
Three directions are shown in Fig. 1 by D3；" fourth direction " is understood to be thickness direction or the height side of solar battery sheet
To fourth direction is shown into Fig. 8 by D4 in Fig. 4.
It continues with reference to Fig. 1.Solar battery sheet 1 includes base sheet, and base sheet is preferably made of silicon.Base sheet
Surface printing has multiple electrodes, and electrode is preferably made from silver.
Specifically, the positive electrode 12 that D2 extends in a second direction is provided on the top surface 25 of base sheet；The bottom of base sheet
The back electrode 13 extended along the third direction D3 for being parallel to second direction D2 is provided on surface 24.Positive electrode 12 and back electrode 13
There is interval in the first direction dl.Preferably, when solar battery sheet 1 is connected with imbricated way, two of arbitrary neighborhood
One positive electrode 12 in solar battery sheet 1 can with another 13 direct physical contact of back electrode and carry out it is conductive even
It connects.Preferably, the size of the lap between two adjacent solar battery sheets in the first direction dl is 0.05mm-
5mm。
In order to facilitate producing and assembling, solar battery sheet 1 can be processed into keeps its top surface 25 and bottom surface 24 equal
For rectangle or substantially rectangular.The positive electrode 12 and back electrode 13 of same solar battery sheet 1 are separately positioned on 25 He of top surface
On the diagonally opposing corner edge of bottom surface 24, for example, positive electrode 12 and back electrode 13 can be separately positioned on top surface 25 and bottom surface
On 24 longitudinal edge.In this way, when two neighboring solar battery sheet 1 is stacked, the bottom surface of previous solar battery sheet 1
The positive electrode 12 of the top surface 25 of back electrode 13 and the latter solar battery sheet 1 on 24 is arranged such with respect to (referring to Fig. 5)
The overlapping of the large area between solar battery sheet 1 can be avoided the occurrence of, so that the exposed area of imbrication component 30 be made to increase.And
And first direction D1 can be parallel to top surface 25, bottom surface 24 transverse edge direction, that is to say, that first direction D1
Perpendicular to second direction D2 and third direction D3.
In order to save the manufacture material of electrode, while not influencing the electric conductivity between solar battery sheet 1 again, it can be such as figure
Shown in 1, set positive electrode 12 and/or back electrode 13 to extend along Directional discontinuity setting.
Imbrication component 30 provided by the present invention can be folded side by above-mentioned solar battery sheet 1 each other and be connected and be formed.
It, can be solid relative to each other by each solar battery sheet 1 by binder 4 after solar battery sheet 1 folds side interconnection each other
Fixed, binder 4 can preferably not have electric conductivity, and certainly, binder 4 also can have electric conductivity.For example, binder 4 can
To be made of the materials such as acrylic resin, organic siliconresin, epoxy resin, polyurethane, and to form certain thickness, need
Some auxiliary agents or substance, such as curing agent, crosslinking agent, coupling agent or ball are added in resin.
For the convenience of description, one of them is known as the solar battery sheet that any two are interconnected with imbricated way
First solar battery sheet 32, another is known as the second solar battery sheet 31, the first solar battery sheet 32 and second sun
Can cell piece 31 after the interconnection of folded side, positive electrode 12 and 13 direct physical contact of back electrode and formed interconnecting piece 34 (such as Fig. 2 with
Shown in Fig. 3) to realize conductive connection.It should be noted that " the first solar battery sheet " mentioned herein and " second sun
Can cell piece " it should be construed as relativity concept and nonabsoluteness concept, for example, in certain a pair of adjacent solar battery sheet
The first solar battery sheet can be the second solar battery sheet in the adjacent solar battery sheet of another pair simultaneously.
In order to keep the connection between solar battery sheet stronger, it is arranged at the interconnecting piece 34 of solar battery sheet and uses
In the receiving portion for accommodating binder 4.The positive electrode 12 and back electrode 13 that a solar battery sheet 1 is arranged in receiving portion are at least
On one, and there is the opening towards another solar battery sheet 1.For example, the positive electrode of the first solar battery sheet 32
The first receiving portion can be set at 12, the first receiving portion has top opening at the top of it；The back of second solar battery sheet 31
The second receiving portion has can be set in electrode 13, and the second receiving portion has bottom opening in its bottom.
In imbrication component 30, one of the first receiving portion and the second receiving portion can be only set, or first is arranged simultaneously
Receiving portion and the second receiving portion.It is appreciated that when there is only the first receiving portion, the binder 4 being accommodated in the first receiving portion
It can be in contact and realize Nian Jie with the second solar battery sheet 31 in the top open part of the first receiving portion；When there is only the second appearances
Receive portion when, be accommodated in binder 4 in the second receiving portion can at the bottom opening of the second receiving portion with the first solar battery
Piece 32 is in contact and realizes bonding.
Preferably, as shown in Fig. 5 to Fig. 8, imbrication component 30 interior the first receiving portion of setting and the second receiving portion simultaneously, first
The bottom opening of the top opening of receiving portion and the second receiving portion can be mutually aligned to accommodate the first receiving portion and second
Portion collectively defines accommodating chamber, and binder 4 is located in the accommodating chamber thus by the first solar battery sheet 32 and the second solar energy
Cell piece 31 is fixed to each other.It needs to illustrate again, Fig. 5 is that the imbrication component 30 in Fig. 4 is illustrated along the section that line B-B intercepts
A part of figure, and be not complete sectional view, it will be understood that there should be substantially six solar-electricities in full sectional view
Pond piece 1, and two solar battery sheets 1 adjacent to each other in six solar battery sheets 1 are illustrated only in Fig. 5；Similarly,
Fig. 6 is a part for the schematic cross-section that the imbrication component 30 in Fig. 4 is intercepted along line A-A, and not complete sectional view, completely
Sectional view in should include substantially five conducting resinl regions being spaced each other, and three conducting resinls therein are illustrated only in Fig. 6
Region, Fig. 7 and Fig. 8 are similarly.
First receiving portion and the second receiving portion can also further have preferred structure.For example, as shown in Fig. 5 to 8,
First receiving portion can run through positive electrode 12 along fourth direction D4, and the second receiving portion can run through back electrode along fourth direction D4
13, the part of the penetrating electrode of receiving portion is referred to as base portion.
Preferably, as shown in fig. 6, the second receiving portion not only runs through the back electrode 13 of the second solar battery sheet 31, and
And run through the base sheet of entire second solar battery sheet 31 along fourth direction D4, the part through base sheet of receiving portion is claimed
For throughhole portions.That is, the second receiving portion not only has bottom opening, also there is top opening, observe shown in Fig. 4 folded
Watt component 30 can see the top opening 33 of each second receiving portion.Wherein, the portion through back electrode 13 of the receiving portion
The radial dimension for dividing the radial dimension of (i.e. base portion) to be greater than or equal to the part (i.e. throughhole portions) through base sheet of the through-hole,
Binder 4 is poured in the through hole and is filled up through-hole.It the part through base sheet of the through-hole can be for cylinder-shaped hole simultaneously
Diameter with 0.05-5mm, or for other shape holes and can have the maximum radial dimension for being less than 10mm, it is preferable that bonding
Agent 4 can also be projected upwards from the top open part of the second receiving portion in base sheet, and project upwards the protruding portion in base sheet
The radial dimension divided can be greater than or equal to the part through base sheet of through-hole, alternatively, binder 4 can also be only in through-hole section
The surface extended in point without protruding from base sheet.It should be noted that " the radial ruler of through-hole mentioned herein, binder 4
It is very little " it refers in the size being parallel in the first plane, i.e. the size in the plane perpendicular to fourth direction D4.
Since binder 4 is filled with through-hole, so binder 4 can be divided with reference to Fig. 6 for three parts: through back electricity
The first binder part 41 of pole 13 protrudes from the third of base sheet through the second binder part 42 of base sheet and at top
Binder part 34, then the radial dimension of first binder part 41 is greater than the radial dimension of third binder part 43, third
The radial dimension of binder part 43 is greater than the radial dimension of the second binder part 42.Such setting is so that binder 4
It protrudes from the part of base sheet and together forms the structure of a rivet shape, such structure energy through the part of base sheet
Enough guarantee that binder 4 is accommodated firmly in base sheet and is not easy to skid off out of base sheet, fall off.
Similarly, with reference to Fig. 7, the first receiving portion also be can be set to along fourth direction D4 through the first solar battery
The through-hole of piece 32, the radial dimension of the part through positive electrode 12 of the through-hole are greater than the radial ruler through the part of base sheet
Very little, the first receiving portion not only has top opening at this time, also has bottom opening.Preferably, it is contained in the first receiving portion
Binder 4 has the protrusion for the bottom surface that base sheet is protruded from along bottom opening, and the radial dimension of the protrusion is greater than
The radial dimension of the part through base sheet of through-hole.
Such setting can be when applying binder 4 to solar battery sheet, direct the opening from receiving portion by binder 4
Mouth pours into, and such operation is relatively simple, and due to the binding effect of receiving portion, can be avoided binder 4 and spill over other positions.
It is of course also possible to set the first receiving portion to do not have bottom opening, the second receiving portion is set as not having
Top opening, the first receiving portion and the second receiving portion are all formed as blind hole, when two solar battery sheets 1 the first receiving portion and
When second receiving portion is aligned, the first receiving portion and the second receiving portion collectively define a closed accommodating chamber.Fig. 8 is shown
Such example.It in this case, must be first in the first receiving portion and the second receiving portion in order to realize the interconnection of solar battery sheet 1
Then the positive electrode 12 of two solar battery sheets 1 and back electrode 13 are aligned by interior filling adhesive again, Fig. 5 is such case
Under imbrication component 30 assembling process in schematic diagram.Further, blind hole can extend in the electrodes along fourth direction D4
But not penetrating electrode, that is to say, that the height of blind hole can be less than the height of electrode.
The present invention additionally provides a kind of manufacturing method for manufacturing above-mentioned imbrication component 30 simultaneously comprising following steps:
Manufacture multiple solar battery sheets 1 as described above；
Apply binder 4 on each solar battery sheet 1；
Multiple solar battery sheets 1 are arranged along first direction D1 with imbricated way, is fixed to each other and makes arbitrary neighborhood
Two solar battery sheets 1 in one positive electrode 12 be aligned with another back electrode 13 and directly contact.
Further, the step of manufacturing multiple solar battery sheet 1 include:
Full wafer solar battery sheet is pre-processed；
Full wafer solar battery sheet after pretreatment is cut into small pieces to form multiple solar battery sheets 1, too
The size in the first direction dl of positive energy cell piece can be the size of full wafer solar battery sheet in the first direction dl
1/20-1/2。
Further, carrying out pretreated step to full wafer solar battery sheet includes:
Multiple positive electrodes 12 and multiple back electrodes 13 are printed in full wafer solar battery on piece；
The design of positive electrode 12 and back electrode 13 forms receiving portion in gap or the place of leaving a blank；
Preferably, receiving portion is processed on positive electrode 12 and/or back electrode 13 and/or base sheet, such as in positive electrode
The first receiving portion is processed at 12, the second receiving portion is processed at back electrode 13, if the first receiving portion and the second receiving portion are
Through the through-hole of base sheet, then the step can be realized by laser beam perforation, observe full wafer solar battery sheet top surface or
Bottom surface, then it can be seen that multiple receiving portions are arranged in full wafer solar battery on piece in array.
Pretreated step is carried out to full wafer solar battery sheet further include:
The making herbs into wool on total base sheet surface of full wafer solar battery sheet 1；
Passivation layer in one layer of precipitating is grown in the front and back of total base sheet；
The passivation layer in one layer of growth deposition on interior passivation layer；
One layer of outer passivation layer of growth deposition on middle passivation layer.
More specifically, interior passivation layer is deposited using thermal oxidation method or laughing gas oxidation or ozonisation or nitric acid solution chemical method,
And interior passivation layer is set as silica coating；And/or
Middle passivation layer is deposited using PECVD or ALD layer or solid target through PVD layer method, and middle passivation layer is set as three
Al 2 O film layer or film layer containing aluminum oxide；And/or
Outer passivation layer is deposited using PVD, CVD or ALD method.
Above-mentioned every process and other unmentioned processes, being capable of specific and optimization.For example, when processing initial,
Can be by full wafer solar battery sheet through vision-based detection and Relatively orientation, vision-based detection platform has high-precision CCD up and down
The positive back side special graph (such as mark point, primary and secondary gratings) and PL (luminescence generated by light of infrared camera crawl full wafer solar battery sheet
Laser detector) to realize that printing error is more than a certain range and open defect or underbead crack carries out automatic identification and picks
Except to NG magazine.Wherein, full wafer solar battery sheet opens pressure sorting by accurately color, efficiency and height, by the whole of feeding
Piece solar battery sheet is the consistent cell piece of attribute (can match docking monolithic solar cell piece sorting function).It sets simultaneously
Standby material loading platform has special magazine and processing mechanism.
It, can be in perforated portion in the step of processing perforative through-hole (i.e. the preferred embodiment of receiving portion) to base sheet
The anti-short circuit protection measures for PN junction are arranged in position, including etching edge etc..Match direct physics fitting or using non-conductive adhesive
The positive and negative pole surface of mode increases texturing processing, and can be designed and be completed by screen painting roughness, to increase positive electricity
The actually active engagement capacity size of pole 12 and back electrode 13.
For making herbs into wool step, good suede structure is obtained by surface wool manufacturing using monocrystalline silicon piece, to realize increase
Specific surface area can receive more multi-photon (energy), while reduce the reflection of incident light, subsequent residual when may include cleaning and texturing
The step of liquid stayed, to reduce acid and influence of the alkaline matter to battery knot.It can also include PN processed after making herbs into wool
The step of knot comprising: it is reacted by phosphorus oxychloride and silicon wafer, obtains phosphorus atoms；By certain time, phosphorus atoms enter
The superficial layer of silicon wafer, and spread by the gap between silicon atom to silicon wafer internal penetration, form N-type semiconductor and p-type
The interface of semiconductor.Diffusion process is completed, realizes the conversion of luminous energy to electric energy.Since diffusion is in silicon chip edge shape
At short-channel, back that light induced electron collected by the front of PN junction can have the region of phosphorus to flow to PN junction along edge-diffusion
Face, and short circuit is caused, edge PN junction is etched by plasma etching and is removed, edge is can be avoided and causes short circuit, in addition, may be used also
To increase SE processing step.Also, since diffusion process can make silicon chip surface form one layer of phosphorosilicate glass, pass through dephosphorization silicon
Glass process reduces the influence to imbrication battery efficiency.
Further, laser slotting can also be carried out to silicon wafer after the passivation layer is formed；It is carried out after printing electrode
Sintering, and by light decay furnace or electrical pumping furnace, battery pond photo attenuation is reduced, battery testing stepping is finally carried out.
Laser cutting machine is preferably used at the step of multiple solar battery sheets to complete in silicon wafer sliver.For sintering
Good full wafer silicon wafer increases online laser cutting dicing processes, and the full wafer silicon wafer sintered enters scribing check bit and carries out appearance inspection
It looks into and vision positioning (the bad meeting automatic shunt of appearance detection is to NG) is carried out to OK piece, it can be free according to online production beat
More rail scribing machines or preset cache stack area are set, to realize that on-line continuous feeds operation.It is set according to cutting scribing optimal effectiveness
Determine laser relevant parameter, with realize faster cutting speed, relatively narrow cutting heat affected area and cutting line width, more preferably uniformly
Property and scheduled depth of cut etc..Pass through the automatic severing machine structure completion cleavage of online laser scribing means after completing automatic cutting
The place's of setting sliver realizes the natural separation of each solar battery sheet 1.It should be noted that laser cut is separate PN junction side,
It avoids PN junction is impaired from leakage current occur, cell piece front and back sides direction is confirmed before needing scribing feeding, if contrary need to increase list
180 ° of only reversing arrangements.
Binder can be carried by halftone or needle seal wound packages carries, by printing machine or high-accuracy point/glue spraying equipment too
Complete the gluing operation of given pace in the specified region of positive energy cell piece.Wherein pass through positioning module under printing mode to solar energy
Cell piece is accurately positioned, printed pattern opening have automated location deviation-correcting function, it can be ensured that halftone aperture position and with
Size application site (i.e. laser deep-cuts corresponding or through hole position) center is overlapped.Tree lace 3D vision-based detection is provided with after gluing online
Function, equipment can non-conductive adhesive colloid height, width etc. are related to volume after online measuring printing parameter (deep-cut work for laser
The test of tree lace glue-type need to be detected by software algorithm under skill, be can avoid difference in structure and fluctuated mistake to optic test bring
Difference), the imperfect NG piece with non-uniform phenomenon of tree lace is rejected, equipment has artificial custom feature, different thresholds can be set
Value carries out processing procedure control.Then, in the interconnection process of solar battery sheet, positioning can be carried for direct physics abutted equipment
Binding function is bonded using locating adhesive tape or other non-conductive glue of fixation such as on imbrication component, imbrication component is avoided to exist
Positive and negative anodes contact displacement is caused to influence interconnection reliability in transmission movement or lamination process.Simultaneously include direct physics fitting after
Binder is applied outside connecting sewing and is attached fixation, can be matched colorless and transparent type binder and be used, meet client to appearance
It is required that.
More specifically, binder includes the discontinuous printing of discontinuous, the cross sectional shape of binder by halftone opening design
Including parallelogram and non-parallel quadrangle (such as round, ellipse), while matching laser and deep-cutting technique opening shape.Between
Disconnected formula size design can match other design technologies of imbrication component, to ensure that solar battery sheet positive electrode and back electrode are formed
Good contact, binder are being suitable for buried structure design (after the preset binder of electrode zone most under laser deep-cuts technique
High-order and electrode altitude difference≤100um).The battery buried structure is the formation of itself manufacturing process, as conventional cell structure contains
There is Al-BSF, does not prepare Al-BSF in the adhesive area of printing present embodiment.There is a thickness using binder, passes through
Buried layer solar battery structure designs so that the sinking of binder place-centric line, leads so that positive back electrode 13 forms good contact
It is logical, it avoids adhesive thickness from influencing positive and negative anodes and effectively contacts conduction electric current.Wherein the bonding scene of binder is silicon nitride+viscous
Agent+silicon nitride is tied, but not limited to this scene, the bonding including each layer structural interface of high-efficiency battery.
Patch robot or servo motion mould group can pick up solar battery sheet and wide according to the good patch of predetermined design
Degree carries out effective lamination, and lamination precision includes x, y=+/- 100um；Theta=+/- 0.03 °, wherein x indicates lamination gradient, y
Indicate that lamination lap, theta indicate that lamination rotates angle；According to required precision under different patch widths, x y theta hold
Poor range is adjustable, and appearance and size can satisfy requirement under the certain patch width of principle guarantee.
After completing lamination, complete imbrication component by line end lead automatic punching or pre-punched hole (end lead come
Designated position punching is completed in material) fixed length cuts realization welding and meets electric current export, combine positive electrode, back electrode and end
Lead is effectively connected.End lead may include the coating (such as tin-lead bismuth silver indium element combinations) of unlike material.
The imbrication component prepared is arranged in series and parallel according to photovoltaic module typesetting requirement, go here and there with string spacing according to etc. it is electric
A size value is arranged in the reflective requirement of gesture combination appearance requirement and gap, and general setting includes 0.1~100mm.Automaton hand
It completes to be soldered into final component positive and negative anodes by converging automatically after pendulum vibration is made and welded and exported Current Voltage picking up imbrication component,
Semi-finished product module successively is made into according to stack paving glue film, back shroud (backboard or glass) later.
Semi-finished product module semi-finished product module qualified after EL (electroluminescent) and VI (apparent visual) detection carries out layer
Pressure technique, laminating process include three cavity layer pressures.Wherein laminating process combines new interconnection architecture evacuated in closed chamber
Heating pressurization is so that glue film progress heat cure is finally laminated into a complete structural member to fit closely.
Solar battery sheet, imbrication component and manufacturing method of the invention, so that solar battery sheet interconnection is at imbrication group
When part, conductive interconnections are realized by the direct contact of positive electrode to each other and back electrode between solar battery sheet, thus can
To omit conductive conducting resinl.In this way, environmental attack, high/low temperature alternation, expand with heat and contract with cold etc. be easily destroyed conducting resinl because
Element just will not influence imbrication component of the invention, thus be not easy electric current virtual connection and open circuit occur.Also, it is led due to that need not be arranged
Electric glue, then excessive glue and caused by imbrication component positive and negative anodes it is breaking the problems such as would not also occur.In addition, due to not requiring to glue
The electric conductivity of agent is tied, the production cost of imbrication component is also minimized.
The above description of numerous embodiments of the invention is supplied to one of related fields commonly for purposes of illustration
Technical staff.It is not intended to the present invention is exclusive or is confined to single disclosed embodiment.As described above, the field of above teaching
In those of ordinary skill be readily apparent that a variety of substitutions and modification of the invention.Therefore, implement although some substitutions have been described in detail
Mode, those of ordinary skill in the art are readily apparent that or relatively easily develop other embodiments.The present invention is intended to include here
All substitutions, remodeling and the modification of the invention of description, and fall into its in the spirit and scope of invention as described above
His embodiment.
Appended drawing reference:
Solar battery sheet 1
The top surface 25 of solar battery sheet
The bottom surface 24 of solar battery sheet
Positive electrode 12
Back electrode 13
Binder 4
First solar battery sheet 32
Second solar battery sheet 31
Interconnecting piece 34
The top opening 33 of second receiving portion
First binder part 41
Second binder part 42
Third binder part 43
First direction D1
Second direction D2
Third direction D3
Fourth direction D4
Claims (25)
1. a kind of imbrication component, the imbrication component includes multiple solar battery sheets, and multiple solar battery sheets are
It is arranged successively on one direction (D1) with imbricated way and passes through binder (4) and be fixed to one another, the solar battery sheet includes base
Body piece is provided with the positive electrode (12) that (D2) extends in a second direction on the top surface (25) of described matrix piece；Described matrix piece
Bottom surface (24) on be provided with along be parallel to the second direction third direction (D3) extend back electrode (13), any two
One positive electrode of a adjacent solar battery sheet is directly contacted and is formed with another the back electrode
Interconnecting piece to realizing conductive connection,
The receiving portion for accommodating the binder is provided at the interconnecting piece.
2. imbrication component according to claim 1, which is characterized in that described accommodation section setting is in the positive electrode and described
In at least one of back electrode, and there is the opening towards solar battery sheet described in another.
3. imbrication component according to claim 2, which is characterized in that be respectively provided with when on the positive electrode and the back electrode
When having described accommodation section, the opening of the opening for the receiving portion being arranged at the positive electrode and the receiving portion being arranged at the back electrode
It is aligned or not aligned with.
4. imbrication component according to claim 2, which is characterized in that described accommodation section includes along perpendicular to the solar energy
The base portion of fourth direction (D4) penetrating electrode of cell piece.
5. imbrication component according to claim 4, which is characterized in that described accommodation section further includes passing through along the fourth direction
Wear the throughhole portions of the described matrix piece of solar battery sheet.
6. imbrication component according to claim 5, which is characterized in that the radial dimension of the base portion of described accommodation section be greater than or
Equal to the radial dimension of the throughhole portions.
7. imbrication component according to claim 5, which is characterized in that the binder protrudes from institute from the throughhole portions
State solar battery sheet.
8. imbrication component according to claim 7, which is characterized in that the prominent solar battery sheet surface of the binder
Partial radial dimension is greater than or equal to the radial dimension of the throughhole portions.
9. imbrication component according to claim 5, which is characterized in that the binder extend in the throughhole portions but
The surface of solar battery sheet is not protruded from.
10. imbrication component according to claim 1, which is characterized in that described accommodation section is multiple.
11. imbrication component according to claim 4, which is characterized in that described accommodation section further includes along the fourth direction
The blind hole extended in described matrix piece.
12. imbrication component according to claim 2, which is characterized in that described accommodation section includes along perpendicular to the sun
The base portion of fourth direction (D4) non-penetrating electrode of energy cell piece.
13. imbrication component described in any one of -12 according to claim 1, which is characterized in that the binder is conduction
Glue or the binder do not have electric conductivity.
14. a kind of solar battery sheet, multiple solar battery sheets can be in a first direction with imbricated way successively phase
Even, the solar battery sheet includes base sheet, and the positive electricity extended in a second direction is provided on the top surface of described matrix piece
Pole；The back electrode extended along the third direction for being parallel to the second direction is provided on the bottom surface of described matrix piece, it is described
Solar battery sheet is configured to the two solar batteries when being connected with imbricated way with another solar battery sheet
The positive electrode and back electrode of piece directly contact and form interconnecting piece to realizing conductive connection,
It is characterized in that, the solar battery sheet is provided with the receiving for accommodating the binder at the interconnecting piece
Portion.
15. solar battery sheet according to claim 14, which is characterized in that described accommodation section is arranged in the solar energy
In at least one of the positive electrode of cell piece and the back electrode, and have towards solar battery described in another
The opening of piece.
16. solar battery sheet according to claim 15, which is characterized in that when on the positive electrode and the back electrode
When being provided with described accommodation section, the opening for the receiving portion being arranged at the positive electrode and the receiving portion being arranged at the back electrode
Opening be aligned or not aligned with.
17. solar battery sheet according to claim 15, which is characterized in that described accommodation section includes along perpendicular to described
The base portion of fourth direction (D4) penetrating electrode of solar battery sheet.
18. solar battery sheet according to claim 17, which is characterized in that described accommodation section further includes along the described 4th
Throughhole portions of the direction through the described matrix piece of solar battery sheet.
19. solar battery sheet according to claim 18, which is characterized in that the radial dimension of the base portion of described accommodation section
More than or equal to the radial dimension of the throughhole portions.
20. solar battery sheet according to claim 14, which is characterized in that described accommodation section is multiple.
21. solar battery sheet according to claim 17, which is characterized in that described accommodation section includes along the four directions
To the blind hole extended in described matrix piece.
22. solar battery sheet according to claim 15, which is characterized in that described accommodation section includes along perpendicular to described
The base portion of fourth direction (D4) non-penetrating electrode of solar battery sheet.
23. a kind of manufacturing method for manufacturing imbrication component, which is characterized in that the manufacturing method includes the following steps:
Manufacture solar battery sheet described in multiple any one of 4-22 according to claim 1；
Apply binder in the corresponding receiving portion of each solar battery sheet；
The multiple solar battery sheet is arranged along the first direction with imbricated way, is fixed to each other and makes arbitrary neighborhood
Two solar battery sheets in one positive electrode and another back electrode directly contact to realize conductive connection.
24. according to the method for claim 23, which is characterized in that the step of manufacturing the multiple solar battery sheet packet
It includes:
Full wafer solar battery sheet is pre-processed；
The full wafer solar battery sheet after pretreatment is cut into small pieces to form the multiple solar battery sheet.
25. according to the method for claim 23, which is characterized in that described pretreated to the progress of full wafer solar battery sheet
Step includes:
In the full wafer solar battery on piece print positive electrode and back electrode；
Receiving portion is processed at the positive electrode and/or the back electrode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837455.1A CN110473924A (en) | 2019-09-05 | 2019-09-05 | The manufacturing method of imbrication component, solar battery sheet and imbrication component |
| PCT/CN2019/127008 WO2020052695A2 (en) | 2019-09-05 | 2019-12-20 | Laminated tile assembly, solar cell piece, and manufacturing method for laminated tile assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837455.1A CN110473924A (en) | 2019-09-05 | 2019-09-05 | The manufacturing method of imbrication component, solar battery sheet and imbrication component |
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| Publication Number | Publication Date |
|---|---|
| CN110473924A true CN110473924A (en) | 2019-11-19 |
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| CN201910837455.1A Pending CN110473924A (en) | 2019-09-05 | 2019-09-05 | The manufacturing method of imbrication component, solar battery sheet and imbrication component |
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| CN (1) | CN110473924A (en) |
| WO (1) | WO2020052695A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020052695A3 (en) * | 2019-09-05 | 2020-07-09 | 成都晔凡科技有限公司 | Laminated tile assembly, solar cell piece, and manufacturing method for laminated tile assembly |
| WO2021013276A3 (en) * | 2020-03-30 | 2021-03-11 | 成都晔凡科技有限公司 | Large cell piece, solar cell pieces, shingled assembly, and manufacturing method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020052695A3 (en) | 2020-07-09 |
| WO2020052695A2 (en) | 2020-03-19 |
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