CN102800723A - Solar cell component and manufacturing method thereof - Google Patents
Solar cell component and manufacturing method thereof Download PDFInfo
- Publication number
- CN102800723A CN102800723A CN2011101407083A CN201110140708A CN102800723A CN 102800723 A CN102800723 A CN 102800723A CN 2011101407083 A CN2011101407083 A CN 2011101407083A CN 201110140708 A CN201110140708 A CN 201110140708A CN 102800723 A CN102800723 A CN 102800723A
- Authority
- CN
- China
- Prior art keywords
- electrode
- solar cell
- electric
- conductor
- module according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 210000003850 cellular structure Anatomy 0.000 title abstract 3
- 230000005684 electric field Effects 0.000 claims abstract description 44
- 239000004020 conductor Substances 0.000 claims description 94
- 238000009413 insulation Methods 0.000 claims description 33
- 230000004888 barrier function Effects 0.000 claims description 31
- 239000011810 insulating material Substances 0.000 claims description 8
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000005130 electrotropism Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 abstract 6
- 238000003466 welding Methods 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 238000005452 bending Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
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
- H01L31/04—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
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0516—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module specially adapted for interconnection of back-contact 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
- H01L31/02—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
- H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a solar cell component, which comprises a solar cell, a first conductive piece and an insulating layer, wherein first electrodes which are mutually insulated and isolated and second electrodes opposite to the first electrodes in polarity are arranged on one side surface of the solar cell; an electric field opposite to the first electrodes in polarity is arranged on the surface of the solar cell; the first conductive piece is electrically connected to the first electrodes; and the insulating layer is arranged between the surface of the solar cell and the first conductive piece. According to the invention, because the insulating layer is arranged between the back of the solar cell and the first conductive piece, short-circuiting caused by contacting the first conductive piece connected with the first electrodes and the electric field at the back of the cell and opposite to the first electrodes in polarity can be avoided; and therefore, industrial application of the back contact type solar cell component can be ensured.
Description
Technical field
The present invention relates to a kind of solar module and manufacturing approach thereof, relate in particular to a kind of contact solar module and a kind of manufacturing approach of carrying on the back the contact solar module of carrying on the back.
Background technology
Back of the body contact solar cell (or being called the back electrode solar cell) is meant the positive pole of battery and a kind of silicon solar cell that negative pole all is positioned at cell backside.Compare traditional silicon solar cell,, reduced the shading loss, thereby strengthened effective daylighting area, improved the efficient of battery owing to cancelled the main grid line in the front of battery.In addition,, thereby made things convenient for the connection and the encapsulation of battery, simplified manufacture craft because the positive and negative electrode of battery all is positioned at the back side of battery; And, make battery seem more attractive in appearance from the front because the main grid line of battery front side reduces.So back of the body contact solar cell more and more receives the concern of industry and progressively begins the application of industry.
If back of the body electric field is a positive electric field, in the manufacture process of back of the body contact solar module, when adopting traditional electric connection mode that the adjacent cell sheet electrically is connected in series, the electrical connection device that connects negative electrode inevitably can contact with positive electric field, thereby causes short circuit; If back of the body electric field is a negative electric field, when adopting traditional electric connection mode that the adjacent cell sheet electrically is connected in series, the electrical connection device that connects positive electrode equally inevitably can contact with negative electric field, causes short circuit.The short circuit problem that can occur when therefore how to solve the series connection of back of the body contact solar module adjacent cell sheet is those skilled in the art's urgent problems.
Summary of the invention
The object of the present invention is to provide a kind of solar module; It can make be arranged on back of the body contact back of solar cell be used to connect first electric-conductor of first electrode with the electric field opposite with first polarity of electrode at the back side reliably insulate, thereby guaranteeing to carry on the back contacts the application that solar module can be realized industry.
The present invention also aims to provide a kind of manufacturing approach of solar module; It can make be arranged on back of the body contact back of solar cell be used to connect first electric-conductor of first electrode with the electric field opposite with first polarity of electrode at the back side reliably insulate, thereby guaranteeing to carry on the back contacts the application that solar module can be realized industry.
For realizing one of foregoing invention purpose; A kind of solar module of the present invention; This assembly comprises solar cell; Said solar cell one of which side surface is provided with first electrode of mutually insulated isolation and second electrode opposite with said first polarity of electrode, and said surface is provided with and the opposite electric field of said first polarity of electrode; First electric-conductor electrically connects said first electrode; Insulating barrier is arranged between the said surface and said first electric-conductor of solar cell.
As further improvement of the present invention, said insulating barrier comprises the insulation strip on the said surface that can break away from solar cell.
As further improvement of the present invention, said insulation strip contains expandability polyethylene or thermoplastic elastomer (TPE) or polyvinyl fluoride composite membrane or silica-base material.
As further improvement of the present invention, offer through hole on the said insulation strip, first electric-conductor electrically connects through the through hole and first electrode.
As further improvement of the present invention, an end of said insulation strip extends beyond the edge on the said surface of solar cell.
As further improvement of the present invention, said insulating barrier comprises the said lip-deep insulating material that is attached to solar cell.
As further improvement of the present invention, said insulating material comprises insulation silica gel.
As further improvement of the present invention, said first electric-conductor comprises base band that lengthwise extends and the protuberance that protrudes with respect to base band plane of living in.
As further improvement of the present invention, said protuberance and said first electrode pair should be provided with, and protrude into said through hole and electrically connect with said first electrode.
As further improvement of the present invention, said first electrode protrudes outside the said surface.
As further improvement of the present invention, this assembly also comprises some second electric-conductors that electrically connect said second electrode.
As further improvement of the present invention, the rectangular shape of said first electrode.
As further improvement of the present invention, this assembly comprises that also the interconnect conductive part is to electrically connect said some second electric-conductors.
As further improvement of the present invention, said first electrode is a negative electrode, and said second electrode is a positive electrode, and said electric field is a positive electric field.
As further improvement of the present invention, said first electrode is a positive electrode, and said second electrode is a negative electrode, and said electric field is a negative electric field.
For realizing one of foregoing invention purpose; A kind of solar module of the present invention; This assembly comprises first solar cell and second solar cell adjacent with said first solar cell; Said first and second solar cells include the front that is used to receive irradiation and with said positive opposing backside surface, and the said back side is provided with first electrode, second electrode opposite with first polarity of electrode and the electric field opposite with first polarity of electrode;
First electric-conductor electrically connects said first electrode;
Second electric-conductor electrically connects said second electrode;
Insulating barrier is arranged between the back side and said first electric-conductor of said first, second solar cell;
The interconnect conductive part electrically connects second electric-conductor of first solar cell and first electric-conductor of second solar cell.
As further improvement of the present invention, said insulation strip is provided with the through hole that should be provided with said first electrode pair, and said first electric-conductor is provided with the protuberance that protrudes in the said through hole and electrically connect with said first electrode.
As further improvement of the present invention, said interconnect conductive part is positioned at the back side of first solar cell, and is connected with second electric-conductor on first back of solar cell.
As further improvement of the present invention, said interconnect conductive part is positioned at the back side of second solar cell, and is connected with first electric-conductor on said second back of solar cell.
As further improvement of the present invention, be provided with insulating barrier between the back side of said interconnect conductive part and said second solar cell.
As further improvement of the present invention, said first electrode is a negative electrode, and said second electrode is a positive electrode, and said electric field is a positive electric field.
As further improvement of the present invention, said first electrode is a positive electrode, and said second electrode is a negative electrode, and said electric field is a negative electric field.
For realizing above-mentioned another goal of the invention; The manufacturing approach of a kind of solar module of the present invention; This method comprises the steps to provide first solar cell and second solar cell adjacent with said first solar cell; Said first and second solar cells one of which side surface respectively are provided with plurality of rows first electrode, plurality of rows second electrode opposite with first polarity of electrode and the electric field opposite with first polarity of electrode, and wherein each ranked first electrode and includes several first electrodes; Provide some second electric-conductors to ranked second electrode to connect each respectively; Insulating barrier is provided, and it is positioned at whenever ranked first around the electrode on said first, second back of solar cell; Provide some first electric-conductors to ranked first electrode to connect each respectively, said insulating barrier is between first electric-conductor and first, second back of solar cell; Second electric-conductor of interconnect conductive part to connect first solar cell and first electric-conductor of second solar cell are provided.
As further improvement of the present invention, the said step that first electric-conductor is provided comprises said first electric-conductor is processed to form with each and ranked first some protuberances that electrode pair is answered; The protuberance of said first electric-conductor ranked first the electrode pair electrotropism with each to be connected.
As further improvement of the present invention, the said step of insulating barrier that provides comprises, on the said surface of first and second solar cells, is positioned at each and ranked first the outer first electric-conductor position place's brushing insulating material of electrode.
As further improvement of the present invention; The said step of insulating barrier that provides comprises; On the said surface of first and second solar cells, being positioned at place, the first electric-conductor position provides insulation strip, offers in advance on the said insulation strip with each and ranked first the through hole that electrode pair is answered.
Compared with prior art; The invention has the beneficial effects as follows: through between the back of solar cell and first electric-conductor, insulating barrier being set; First electric-conductor that can avoid connecting first electrode contacts with the electric field opposite with first polarity of electrode of cell backside and is short-circuited, thereby guarantees that the back-contact solar module can realize the application of industry.
Description of drawings
Fig. 1 is the floor map of back of solar cell in the embodiment of the present invention;
Fig. 2 is the floor map that is used between negative pole electric-conductor and back of solar cell, realizing the insulation strip of insulation in the embodiment of the present invention;
Fig. 3 is the floor map after insulation strip shown in Figure 2 is installed on the back of solar cell shown in Figure 1;
Fig. 4 is the end view of negative pole electric-conductor in the embodiment of the present invention;
Fig. 5 is the floor map after negative pole electric-conductor shown in Figure 4 is installed on the back of solar cell shown in Figure 3;
Fig. 6 is the floor map after further anodal electric-conductor and interconnect conductive part being installed on the back of solar cell shown in Figure 4;
Fig. 7 is two floor map that the adjacent cell sheet connects in the embodiment of the present invention;
Fig. 8 is the cross section cross-sectional schematic of solar module in the embodiment of the present invention;
Fig. 9 and Fig. 7 are similar, wherein between interconnect conductive part and back of solar cell, also are provided with insulating barrier.
Embodiment
Below will combine accompanying drawing with metal piercing formula (Metallization Wrap Through; MWT) back of the body contact solar cell is that example is described in detail solar module of the present invention; But application of the present invention is not limited in MWT back of the body contact solar cell; It can use the back of the body contact solar cell of other types equally; Like metal circulating type (Metallization Wrap Around, MWA) back of the body contact solar cell or emitter-base bandgap grading penetration (Emitter Wrap Through, EWT) back of the body contact solar cell.
Solar module is used to absorb luminous energy, and luminous energy is converted into electric energy output, and it can be to arrange the area battery assembly that forms by the laggard row encapsulation of some solar cell series connection and by square formation.The back side 11 for the technological solar cell 10 of employing metal piercing (MWT) shown in Figure 1.Solar cell generally is made up of two or polylith wafer, and semi-conducting material is silicon normally, like monocrystalline silicon, polysilicon, amorphous silicon etc.Receive the irradiation of light when the front of solar cell after, the accumulation of heterocharge appears in the battery two ends, promptly produces " photovoltage "; Here it is " photovoltaic effect "; Under the effect of photovoltaic effect, the two ends of battery produce electromotive force, thereby transform light energy is become electric energy.For the MWT solar cell, the front of battery (not shown) is provided with some metal grid lines that are arranged in parallel (not shown) usually, with behind the irradiation that receives light, collects the photogenerated current that produces.The back side 11 of battery is provided with positive electrode 111 and negative electrode 112, because the back side of battery can be through the printing aluminum slurry to form positive electric field, so negative electrode need be through certain mode and positive electrode and positive electric field formation insulation.For example, around negative electrode 112, also be formed with insulating regions (indicate) shown in Fig. 1, prevent that negative electrode and on every side positive electric field from electrically conducting.This insulating regions can form through laser ablation, also can form through other modes.Negative electrode 112 is connected through the through hole (not shown) that runs through battery with the metal grid lines that is positioned at the front; This through hole can obtain through the laser drill technology; And be formed with the coat of metal at through-hole inner surface; The positive metal grid lines and the negative electrode at the back side are electrically conducted, thereby, the photogenerated current that metal grid lines is collected is transferred to negative electrode.Because the MWT technology is well known to those skilled in the art, like on February 21st, 2007 European patent EP 0 985 233 B1 numbers of bulletin, so the applicant no longer further launches narration at this.
As shown in Figure 1; In this execution mode; The back side of battery is provided with staggered plurality of rows positive electrode 111 and plurality of rows negative electrode 112; Wherein each of positive electrode 111/ negative electrode 112 drains into the electrode terminal that comprises that less two spaces are provided with, the rectangular shape of this electrode terminal, and the back side that protrudes from battery is provided with.Certainly, what those skilled in the art can expect easily is, in other embodiments, and the shape of positive and negative electrode 111,112, number, and all visual different design requirement of arrangement mode and changing.
Extremely shown in Figure 7 with reference to Fig. 2; Except solar cell 10, the insulating barrier between the back side 11 that solar module also comprises the some anodal electric-conductor 31 and the some negative pole electric-conductors 32 that are used for every row's positive electrode 111 of corresponding connection and negative electrode 112, be arranged on negative pole electric-conductor 32 and solar cell and being used for is realized the interconnect conductive part 33 that electrically connects between adjacent solar cell 10.
A kind of execution mode of insulating barrier as shown in Figure 2, in this execution mode, the insulation strip 20 of insulating barrier for breaking away from solar cell 10 back sides 11.Insulation strip 20 is processed by insulating material, as the expandability polyethylene (Expandable Polyethylene, EPE) or thermoplastic elastomer (TPE) (Thermoplastic Elastomer, TPE) or polyvinyl fluoride composite membrane (TPT) or silica-base material etc.Insulation strip 20 is strip; It has a body 21; On body 21, offer and the corresponding through hole 22 of each row's negative electrode 112; The interval of wherein adjacent two through holes 22 is suitable with the interval of corresponding adjacent two negative electrodes 112, and through hole 22 same rectangular shapes are suitable with the size of negative electrode 112.Need to prove that mentioned " quite " comprises identically in preamble and the back literary composition, is also included within interior roughly the same of permissible range.For example, the spacing of adjacent through-holes 22 can be a bit larger tham the spacing of corresponding adjacent negative electrode 112, only need guarantee that negative electrode 112 can expose in through hole; The size of through hole 22 can be slightly smaller than the size of negative electrode 112.In addition, what those skilled in the art can expect easily is, the shape of through hole 22 also can be inconsistent with negative electrode 112, and circular like through hole 22, the minor face that this circular diameter is less than or equal to the rectangle of negative electrode 112 gets final product.In addition; In other embodiments; Insulating barrier can be attached to the insulating material on the back side 11 of solar cell 10, and as around negative electrode, brushing insulation silica gel etc., this mode can realize electrically intercepting between the back side 11 of negative pole electric-conductor 32 and solar cell 10 equally effectively.
In this execution mode, anodal electric-conductor 31 and negative pole electric-conductor 32 all adopt the form of welding 30.As shown in Figure 4, this welding 30 is a bonding jumper, and it comprises a strip base band 301 and the some protuberances 302 that protrude with respect to base band plane of living in.The interval of number and adjacent protuberance that wherein is used for the protuberance 302 on the welding of negative or positive electrode electric-conductor 31 is suitable with the interval of the number of each row's positive and negative electrode 111,112 and adjacent electrode terminal respectively.Protuberance 302 is mainly used in the 11 last times of the back side that are installed to solar cell 10 at welding 30, passes the through hole on the insulating barrier, is fixedly connected to form electrical the contact, like the welding of adopting in this execution mode with the corresponding electrode terminal.This protuberance 302 can be integrally formed with base band 301, as forming through bending or punching press; Also can be arranged on the base band, as at salient point of base band surface soldered through additional form.In this execution mode, it is suitable welding to be cut into the rectangle width of width and electrode terminal in advance, then as long as the bending base band just can form protuberance, thereby has made things convenient for the manufacturing of solar module.Owing to insulating barrier can be set between anodal electric-conductor 31 and the back of solar cell 11,, promptly save protuberance so anodal electric-conductor 31 can adopt the welding that does not need bending.In addition, in other embodiments, anodal electric-conductor can save, and promptly directly on the back side 11 of solar cell, forms the positive electrode of strip.In addition; In other embodiments; Some negative electrodes of each row are strip; Promptly form an all-in-one-piece strip negative electrode, this moment the through hole 22 on the said insulating barrier 20 also correspondence be arranged to a strip through hole, also only need be provided with one on the said base band 301 and get final product with the corresponding strip protuberance 302 of strip through hole.In this execution mode, interconnect conductive part 33 is used to realize the positive and negative electrode electric-conductor 31 of adjacent solar cell, the interconnection between 32, and it can adopt the form of bonding jumper.
With reference to Fig. 3, Fig. 5, Fig. 6 and shown in Figure 7; During assembling; Earlier insulation strip 20 is installed to the back side 11 of solar cell 10; Wherein the through hole on the insulation strip 20 22 and corresponding negative electrode 112 over against, an end 25 of insulation strip 20 extends beyond the edge 115 of solar cell 10, and can further snap on the back side of adjacent solar cell (as shown in Figure 7).Then; Negative pole electric-conductor 32 is connected to the back side 11 of solar cell; Wherein the protuberance on the negative pole electric-conductor welds with corresponding negative electrode; Because insulation strip 20 is arranged between the back side 11 of negative pole electric-conductor 32 and solar cell, and insulation strip 20 all intercepted contacting of negative pole electric-conductor 32 and back of solar cell 11 on longitudinally and horizontal cross direction, thereby makes the positive electric field at the back side 11 of negative pole electric-conductor 32 and solar cell effectively insulate.Again, anodal electric-conductor 31 is connected to the back side 11, the protuberance on the wherein anodal electric-conductor and 111 welding of corresponding positive electrode of solar cell.Certainly, in other embodiments, anodal electric-conductor 31 and negative pole electric-conductor 32 are installed to the order of back of solar cell 11 can conversion; Perhaps negative pole electric-conductor 32 can be earlier and insulation strip 20 assemblings, and then both are installed on the back side 11 of solar cell together.
With reference to being connected of Fig. 6 and two adjacent solar cells shown in Figure 7, certainly, solar module generally includes tens or tens solar cells that so connect, below only with wherein adjacent two be that example describes.In this execution mode, interconnect conductive part 33 is electrically connected the some anodal electric-conductor 311 on first solar cell, 101 back sides earlier, and then realizes electrically connecting with some negative pole electric-conductors of being come by extension on second solar cell, 102 back sides 322.Because interconnect conductive part 33 is connected with anodal electric-conductor 311 earlier, thereby the interconnect conductive part can directly contact with the back side of solar cell and need not to insulate.Certainly; In other embodiments; As shown in Figure 9; Interconnect conductive part 33 also can be earlier be connected earlier with the negative pole electric-conductor 322 of second solar cell 102, and then is connected with anodal electric-conductor 311 on first solar cell 101, only need between the interconnect conductive part 33 and second solar cell, 102 back sides, insulating barrier 29 be set in advance this moment; The set-up mode of this insulating barrier can be identical with the above-mentioned insulating barrier that is arranged between negative pole electric-conductor and the back of solar cell, and the applicant no longer gives unnecessary details at this.In addition, the interconnect conductive part can be arranged on the back side of first solar cell, also can be arranged on the back side of second solar cell.Since the end 25 of insulation strip 20 further extend beyond second solar cell 102 edge 115 and with the back side overlap joint of first solar cell 101; Thereby see from the front of solar cell; Negative pole electric-conductor 322 is insulated that bar 20 blocks and can't be in sight, has guaranteed the attractive in appearance of solar module.
Cooperate with reference to the cross-sectional schematic through the solar module after the lamination encapsulation shown in Figure 8.What be positioned at bottom, solar module 100 back sides is the backboard 40 that is used for protection packaging, and it can be processed by polyvinyl fluoride composite membrane (TPT).What be positioned at solar module 100 positive tops is the glass of light-permeable, is generally toughened glass.Be arranged in the some solar cells of mentioning for above-mentioned execution mode 10 that are interconnected, the insulation strip 20 that is arranged on back of solar cell at solar module 100 middle parts and the welding 30 that is used for the positive and negative electrode electric-conductor.The upper and lower both sides that are positioned at solar cell 10 are respectively equipped with the hot melt adhesive stick, and like ethylene-vinyl acetate copolymer (EVA), it has certain elasticity, can solar cell be wrapped up within it, and be bonded as one with upper strata glass and lower floor's backboard.
The structure of the solar cell of introducing in the above-mentioned execution mode is the n+/p structure; Be that the solar cell front is n type silicon; The back side is p type silicon, and the solar cell of this structure is positive to form negative electric field, and the back side forms positive electric field; So being positioned at the negative electrode at the back side (will be first electrode with the opposite polarity electrode definition of back surface field; Correspondingly, the electrode opposite with first polarity of electrode is second electrode) need effectively insulate with positive electric field with negative pole electric-conductor (electric-conductor that will be connected first electrode is defined as first electric-conductor, and the electric-conductor that connects second electrode is defined as second electric-conductor).For the solar cell of p+/n structure, because the solar cell front is a p type silicon, the back side is n type silicon, so at the positive formation of solar cell positive electric field, and form negative electric field overleaf.The present invention can be applicable to the solar cell of p+/n structure equally; At this moment; The positive electrode (first electrode) that needs to be positioned at the back side effectively insulate with anodal electric-conductor (first electric-conductor) and back side negative electric field, and identical in its insulation mode and the above-mentioned execution mode, the applicant no longer gives unnecessary details at this.
Through between the back of solar cell and first electric-conductor, insulating barrier being set; First electric-conductor that can avoid connecting first electrode contacts with the electric field opposite with first polarity of electrode of cell backside and is short-circuited, thereby guarantees that the back-contact solar module can realize the application of industry.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and under the situation that does not deviate from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore; No matter from which point; All should regard embodiment as exemplary; And be nonrestrictive, scope of the present invention is limited accompanying claims rather than above-mentioned explanation, therefore is intended to the implication of the equivalents that drops on claim and all changes in the scope are included in the present invention.Should any Reference numeral in the claim be regarded as limit related claim.
In addition; Describing according to execution mode though should be appreciated that this specification, is not that each execution mode only comprises an independently technical scheme; This narrating mode of specification only is for clarity sake; Those skilled in the art should make specification as a whole, and the technical scheme among each embodiment also can form other execution modes that it will be appreciated by those skilled in the art that through appropriate combination.
Claims (26)
1. a solar module (100) is characterized in that, this assembly comprises:
Solar cell (10); Said solar cell one of which side surface (11) is provided with first electrode (112) of mutually insulated isolation and second electrode (111) opposite with said first polarity of electrode, and said surface is provided with and the opposite electric field of said first polarity of electrode;
First electric-conductor (32) electrically connects said first electrode;
Insulating barrier (20) is arranged between the said surface (11) and said first electric-conductor (32) of solar cell.
2. solar module according to claim 1 is characterized in that: said insulating barrier comprises the insulation strip (20) on the said surface that can break away from solar cell.
3. solar module according to claim 2 is characterized in that, said insulation strip contains expandability polyethylene or thermoplastic elastomer (TPE) or polyvinyl fluoride composite membrane or silica-base material.
4. solar module according to claim 2 is characterized in that: offer through hole (22) on the said insulation strip (20), first electric-conductor (32) electrically connects through the through hole and first electrode.
5. solar module according to claim 2 is characterized in that: an end (25) of said insulation strip extends beyond the edge on the said surface of solar cell.
6. solar module according to claim 1 is characterized in that: said insulating barrier comprises the said lip-deep insulating material that is attached to solar cell.
7. solar module according to claim 6 is characterized in that: said insulating material comprises insulation silica gel.
8. solar module according to claim 4 is characterized in that: said first electric-conductor comprises base band (301) that lengthwise extends and the protuberance (302) that protrudes with respect to base band plane of living in.
9. solar module according to claim 8 is characterized in that: said protuberance and said first electrode pair should be provided with, and protrude into said through hole and electrically connect with said first electrode.
10. solar module according to claim 1 is characterized in that: said first electrode protrudes outside the said surface (11).
11. solar module according to claim 1 is characterized in that: this assembly also comprises some second electric-conductors that electrically connect said second electrode.
12. according to any described solar module in the claim 1 to 11, it is characterized in that: the rectangular shape of said first electrode.
13. solar module according to claim 11 is characterized in that: this assembly comprises that also the interconnect conductive part is to electrically connect said some second electric-conductors.
14. solar module according to claim 1 is characterized in that: said first electrode is a negative electrode, and said second electrode is a positive electrode, and said electric field is a positive electric field.
15. solar module according to claim 1 is characterized in that: said first electrode is a positive electrode, and said second electrode is a negative electrode, and said electric field is a negative electric field.
16. a solar module is characterized in that, this assembly comprises:
First solar cell (101) and second solar cell (102) adjacent with said first solar cell; Said first and second solar cells include the front that is used to receive irradiation and with said positive opposing backside surface (11), and the said back side is provided with first electrode (112), second electrode (111) and with the first polarity of electrode opposite electric field opposite with first polarity of electrode;
First electric-conductor (32) electrically connects said first electrode;
Second electric-conductor (31) electrically connects said second electrode;
Insulating barrier (20) is arranged between the back side (11) and said first electric-conductor (32) of said first, second solar cell;
Interconnect conductive part (33) electrically connects second electric-conductor of first solar cell and first electric-conductor of second solar cell.
17. solar module according to claim 16; It is characterized in that: said insulation strip (20) is provided with the through hole (22) that should be provided with said first electrode pair, and said first electric-conductor (32) is provided with the protuberance (302) that protrudes in the said through hole and electrically connect with said first electrode.
18. solar module according to claim 16 is characterized in that: said interconnect conductive part (33) is positioned at the back side of first solar cell (101), and is connected with second electric-conductor (311) on first back of solar cell.
19. solar module according to claim 16 is characterized in that: said interconnect conductive part (33) is positioned at the back side of second solar cell (102), and is connected with first electric-conductor (322) on said second back of solar cell.
20. solar module according to claim 19 is characterized in that: be provided with insulating barrier between the back side of said interconnect conductive part (33) and said second solar cell (102).
21. solar module according to claim 16 is characterized in that: said first electrode is a negative electrode, and said second electrode is a positive electrode, and said electric field is a positive electric field.
22. solar module according to claim 16 is characterized in that: said first electrode is a positive electrode, and said second electrode is a negative electrode, and said electric field is a negative electric field.
23. the manufacturing approach of a solar module is characterized in that, this method comprises the steps:
First solar cell (101) and second solar cell (102) adjacent with said first solar cell are provided; Said first and second solar cells one of which side surface (11) respectively are provided with plurality of rows first electrode (112), second electrode (111) and the electric field opposite with first polarity of electrode that plurality of rows is opposite with first polarity of electrode, and wherein each ranked first electrode and includes several first electrodes;
Provide some second electric-conductors (31) to ranked second electrode to connect each respectively;
Insulating barrier (20) is provided, and it is positioned at whenever ranked first around the electrode on said first, second back of solar cell (11);
Provide some first electric-conductors (32) to ranked first electrode to connect each respectively, said insulating barrier is positioned between first electric-conductor and first, second back of solar cell (11);
Second electric-conductor of interconnect conductive part (33) to connect first solar cell and first electric-conductor of second solar cell are provided.
24. the manufacturing approach of solar module according to claim 23 is characterized in that: the said step of first electric-conductor that provides comprises:
Said first electric-conductor is processed to form with each ranked first some protuberances (302) that electrode pair is answered;
The protuberance of said first electric-conductor ranked first the electrode pair electrotropism with each to be connected.
25. the manufacturing approach of solar module according to claim 23; It is characterized in that: the said step of insulating barrier (20) that provides comprises; On the said surface of first and second solar cells, be positioned at each and ranked first the outer first electric-conductor position place's brushing insulating material of electrode (112).
26. the manufacturing approach of solar module according to claim 23; It is characterized in that: the said step of insulating barrier (20) that provides comprises; On the said surface of first and second solar cells, being positioned at place, the first electric-conductor position provides insulation strip (20), offers in advance on the said insulation strip with each and ranked first the through hole (22) that electrode pair is answered.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110140708.3A CN102800723B (en) | 2011-05-27 | 2011-05-27 | Solar module and manufacture method thereof |
| PCT/CN2011/075414 WO2012162900A1 (en) | 2011-05-27 | 2011-06-07 | Solar cell module and manufacturing method thereof |
| JP2013538039A JP2013542614A (en) | 2011-05-27 | 2011-06-07 | Solar cell module and manufacturing method thereof |
| US13/193,470 US9153713B2 (en) | 2011-04-02 | 2011-07-28 | Solar cell modules and methods of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110140708.3A CN102800723B (en) | 2011-05-27 | 2011-05-27 | Solar module and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102800723A true CN102800723A (en) | 2012-11-28 |
| CN102800723B CN102800723B (en) | 2015-10-21 |
Family
ID=47199780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110140708.3A Active CN102800723B (en) | 2011-04-02 | 2011-05-27 | Solar module and manufacture method thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2013542614A (en) |
| CN (1) | CN102800723B (en) |
| WO (1) | WO2012162900A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022204A (en) * | 2012-12-12 | 2013-04-03 | 常州大学 | Novel back contacting photovoltaic assembly solder strip and manufacture method thereof |
| CN103296132A (en) * | 2012-03-05 | 2013-09-11 | 聚日（苏州）科技有限公司 | Method for connecting solar cell plates electrically |
| CN103311343A (en) * | 2013-05-24 | 2013-09-18 | 中利腾晖光伏科技有限公司 | Insulated solar cell module |
| CN104241429A (en) * | 2013-06-14 | 2014-12-24 | 三菱电机株式会社 | Light receiving element module and manufacturing method therefor |
| CN110783415A (en) * | 2019-11-07 | 2020-02-11 | 江苏辉伦太阳能科技有限公司 | Novel solar cell module and preparation method thereof |
| CN111245366A (en) * | 2020-01-09 | 2020-06-05 | 徐州谷阳新能源科技有限公司 | PSG adjusting and testing method for improving steady state of MWT solar cell |
| CN113823704A (en) * | 2021-11-23 | 2021-12-21 | 陕西众森电能科技有限公司 | P-type silicon back contact solar cell and preparation method thereof |
| CN113823705A (en) * | 2021-11-24 | 2021-12-21 | 陕西众森电能科技有限公司 | Heterojunction back contact solar cell and preparation method thereof |
| CN114235682A (en) * | 2021-12-27 | 2022-03-25 | 南京日托光伏新能源有限公司 | Method for testing surface coating bonding force of electroplated metal foil for MWT battery pack |
| CN117525194A (en) * | 2023-12-07 | 2024-02-06 | 淮安捷泰新能源科技有限公司 | Solar cell interconnection structure and interconnection method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816486B (en) * | 2017-04-01 | 2018-12-25 | 泰州中来光电科技有限公司 | Battery strings of a kind of N-type IBC solar battery patch connection and preparation method thereof, component and system |
| CN109659376B (en) * | 2018-10-18 | 2024-04-05 | 珈伟新能源股份有限公司 | Solar cell panel and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009059921A (en) * | 2007-08-31 | 2009-03-19 | Sharp Corp | Photoelectric conversion device, photoelectric conversion device connector, and photoelectric conversion module |
| EP2105970A1 (en) * | 2006-12-26 | 2009-09-30 | Kyocera Corporation | Solar cell module |
| CN101556975A (en) * | 2008-04-10 | 2009-10-14 | 通用电气公司 | Wafer level interconnection and method |
| DE102009047778A1 (en) * | 2009-02-24 | 2010-09-02 | Bosch Solar Energy Ag | MWT semiconductor solar cell with a plurality of the semiconducting material contacting, parallel to each other narrow conductive fingers of predetermined length |
| CN202678319U (en) * | 2011-05-27 | 2013-01-16 | 苏州阿特斯阳光电力科技有限公司 | Solar cell module |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09282986A (en) * | 1996-04-11 | 1997-10-31 | Mitsubishi Electric Corp | Vacuum valve |
| DE102007013553A1 (en) * | 2007-03-19 | 2008-09-25 | Q-Cells Ag | Solar cell device, solar cell module and connection arrangement |
| JP4989549B2 (en) * | 2007-08-24 | 2012-08-01 | 三洋電機株式会社 | Solar cell and solar cell module |
| JP2009130117A (en) * | 2007-11-22 | 2009-06-11 | Sharp Corp | Solar cell, semiconductor device link, and its connecting interconnect |
| JP5035845B2 (en) * | 2008-01-04 | 2012-09-26 | シャープ株式会社 | Solar cell and solar cell module |
-
2011
- 2011-05-27 CN CN201110140708.3A patent/CN102800723B/en active Active
- 2011-06-07 JP JP2013538039A patent/JP2013542614A/en active Pending
- 2011-06-07 WO PCT/CN2011/075414 patent/WO2012162900A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2105970A1 (en) * | 2006-12-26 | 2009-09-30 | Kyocera Corporation | Solar cell module |
| JP2009059921A (en) * | 2007-08-31 | 2009-03-19 | Sharp Corp | Photoelectric conversion device, photoelectric conversion device connector, and photoelectric conversion module |
| CN101556975A (en) * | 2008-04-10 | 2009-10-14 | 通用电气公司 | Wafer level interconnection and method |
| DE102009047778A1 (en) * | 2009-02-24 | 2010-09-02 | Bosch Solar Energy Ag | MWT semiconductor solar cell with a plurality of the semiconducting material contacting, parallel to each other narrow conductive fingers of predetermined length |
| CN202678319U (en) * | 2011-05-27 | 2013-01-16 | 苏州阿特斯阳光电力科技有限公司 | Solar cell module |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296132A (en) * | 2012-03-05 | 2013-09-11 | 聚日（苏州）科技有限公司 | Method for connecting solar cell plates electrically |
| CN103296132B (en) * | 2012-03-05 | 2016-01-20 | 聚日（苏州）科技有限公司 | The method of electrical connection solar battery sheet |
| CN103022204A (en) * | 2012-12-12 | 2013-04-03 | 常州大学 | Novel back contacting photovoltaic assembly solder strip and manufacture method thereof |
| CN103022204B (en) * | 2012-12-12 | 2016-05-04 | 常州大学 | A kind of back of the body contact photovoltaic module welding strip and preparation method thereof |
| CN103311343A (en) * | 2013-05-24 | 2013-09-18 | 中利腾晖光伏科技有限公司 | Insulated solar cell module |
| CN104241429A (en) * | 2013-06-14 | 2014-12-24 | 三菱电机株式会社 | Light receiving element module and manufacturing method therefor |
| CN110783415A (en) * | 2019-11-07 | 2020-02-11 | 江苏辉伦太阳能科技有限公司 | Novel solar cell module and preparation method thereof |
| CN111245366A (en) * | 2020-01-09 | 2020-06-05 | 徐州谷阳新能源科技有限公司 | PSG adjusting and testing method for improving steady state of MWT solar cell |
| CN111245366B (en) * | 2020-01-09 | 2021-05-18 | 徐州谷阳新能源科技有限公司 | PSG adjusting and testing method for improving steady state of MWT solar cell |
| CN113823704A (en) * | 2021-11-23 | 2021-12-21 | 陕西众森电能科技有限公司 | P-type silicon back contact solar cell and preparation method thereof |
| CN113823705A (en) * | 2021-11-24 | 2021-12-21 | 陕西众森电能科技有限公司 | Heterojunction back contact solar cell and preparation method thereof |
| CN114235682A (en) * | 2021-12-27 | 2022-03-25 | 南京日托光伏新能源有限公司 | Method for testing surface coating bonding force of electroplated metal foil for MWT battery pack |
| CN117525194A (en) * | 2023-12-07 | 2024-02-06 | 淮安捷泰新能源科技有限公司 | Solar cell interconnection structure and interconnection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102800723B (en) | 2015-10-21 |
| JP2013542614A (en) | 2013-11-21 |
| WO2012162900A1 (en) | 2012-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102800723B (en) | Solar module and manufacture method thereof | |
| EP3751625B1 (en) | Solar cell string, string group, assembly, and manufacturing method thereof | |
| CN202678319U (en) | Solar cell module | |
| EP3544060B1 (en) | Photovoltaic lamination assembly with bypass diodes | |
| JP2008282926A (en) | Solar battery module | |
| JP2009043842A (en) | Solar battery module | |
| CN107910396A (en) | A kind of two-sided monocrystalline lamination photovoltaic module and its manufacture method | |
| JP2005011869A (en) | Solar cell module and its manufacturing method | |
| CN207602596U (en) | A kind of two-sided monocrystalline lamination photovoltaic module | |
| CN102646728A (en) | Back electrode structure of back contact silicon solar cell panel and manufacture method thereof | |
| CN105097975A (en) | Solar battery assembly | |
| CN103426940A (en) | Electrode structure of interlaced back contact (IBC) solar cell | |
| CN210156385U (en) | Silicon-based heterojunction solar cell laminated photovoltaic module | |
| WO2024098968A1 (en) | Photovoltaic cell structure, manufacturing method therefor and photovoltaic module | |
| US9153713B2 (en) | Solar cell modules and methods of manufacturing the same | |
| EP2317560A3 (en) | Solar cell and method for manufacturing the same | |
| CN110071186B (en) | Thin film photovoltaic module inline structure and production process | |
| CN102522460A (en) | Packaging method of silicon-based solar cells of photovoltaic module | |
| JP2010027972A (en) | Solar battery module, and manufacturing method thereof | |
| US20230327035A1 (en) | Interconnection piece and solar cell assembly | |
| US20190051782A1 (en) | Photovoltaic module | |
| KR20180079425A (en) | Back electrode type solar cell substrate, method for manufacturing the same, and back electrode type solar cell | |
| CN214043690U (en) | Photovoltaic module | |
| CN209785947U (en) | MWT solar cell, cell string and cell module | |
| CN204088340U (en) | Without main grid high efficiency back contact solar cell backboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |