CN103928555A - Solar battery module - Google Patents
Solar battery module Download PDFInfo
- Publication number
- CN103928555A CN103928555A CN201410186920.7A CN201410186920A CN103928555A CN 103928555 A CN103928555 A CN 103928555A CN 201410186920 A CN201410186920 A CN 201410186920A CN 103928555 A CN103928555 A CN 103928555A
- Authority
- CN
- China
- Prior art keywords
- solar battery
- connecting portion
- conducting terminal
- battery sheet
- solar
- 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.)
- Pending
Links
- 238000004021 metal welding Methods 0.000 claims abstract description 62
- 239000002131 composite material Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 5
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 16
- 238000003466 welding Methods 0.000 description 12
- 229910000679 solder Inorganic materials 0.000 description 8
- 238000009826 distribution Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
- 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
-
- 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
- H01L31/0508—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 the interconnection means having a particular shape
-
- 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
-
- 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)
- 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)
- Sustainable Energy (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a solar battery module. The solar battery module comprises a battery piece array. The battery piece array is provided with a plurality of solar battery pieces. The reverse side of each solar battery piece comprises multiple electrode pairs formed by anodes and cathodes. The relative position between each anode and the corresponding cathode is 45 degrees. Adjacent solar battery pieces are electrically connected in series through metal welding ribbons. Compared with the prior art, the solar battery module has the advantages that the shapes of the metal welding ribbons for electrical tandem connection are changed to be the same through adjustment of the relative positions between the anodes and the cathodes on the reverse sides of the battery pieces, so that the assembling and packaging complexity is reduced; in addition, a part of battery pieces in the solar battery module can be rotated 90 degrees, 180 degrees and 270 degrees, so that the electrodes of every two adjacent battery pieces are completely symmetrical, the size of the metal welding ribbons is decreased, the space utilization rate and packaging density are improved, and the electric power output by the module is increased.
Description
Technical field
The present invention relates to a kind of solar battery sheet, relate in particular to a kind of solar module with this solar cell chip arrays.
Background technology
In the last few years, due to the minimizing year by year of crude oil storage all over the world, energy problem had become the focus that the whole world is gazed at.In order to solve the crisis of power consumption, the forest ecosystem of various alternative energy sources is real is the task of top priority.Along with environmental consciousness comes back, add that solar energy has advantages of zero pollution, inexhaustible, solar energy generation technology has become the focus attracting most attention in association area.Therefore,, in the position of abundance at sunshine, for example building roof, square etc., see the installing of solar panel more and more widely.
Solar panel is a kind of facility that by photovoltaic effect (Photovoltaic Effect), light is converted into electric power.In the prior art, business-like silicon solar cell, its emitter region and emitter region electrode are all positioned at battery front side.Although the silicon materials minority diffusion length of solar level is less, emitter region is positioned at the collection efficiency that battery front side is conducive to improve charge carrier, and this structure also has its limitation.For example, gate line electrode area occupied has still stopped part sunlight, and the effective area of shining light of battery is reduced.In addition, multiple solar battery sheets, in the time carrying out component package, need to be received welding the back side of another piece cell piece from the face bonding of a cell piece, and this serial connection mode has strengthened the difficulty of automated production.
For above-mentioned puzzlement, researcher considers front electrode to transfer to the back side of battery, develops thus the back contact silicon solar cell that many structures are different.At this, back contact silicon solar cell refers to, emitter region electrode and the base electrode of battery are all positioned at cell backside, and it has lot of advantages: 1) efficiency is high.Owing to reducing or having eliminated the shading loss that front gate line electrode brings completely, thereby improve battery efficiency; 2) easily assembling.Adopt brand-new component package pattern to carry out coplanar connection, both reduced the interval between cell piece, improved packaging density, simplified again making technology, reduced encapsulation difficulty; 3) more attractive in appearance.The front homogeneous of battery, attractive in appearance, has met consumer's esthetic requirement.Taking interdigital formula back of the body contact (Interdigitated Back Contact, IBC), battery is as example, and it selects N-type backing material, and front and rear surfaces all covers one deck heat oxide film, to reduce surface recombination.Utilize photoetching technique, carry out respectively phosphorus (P), boron (B) local diffusion at cell backside, form P district, N district that interdigital formula is arranged, and the P of the side of being located thereon
+district, N
+district.Heavily expand the P forming
+district and N
+the voltage saturation effect under high optically focused condition can be effectively eliminated in district.In addition P,
+district and N
+the area coverage of the contact electrode in district has almost reached carries on the back surperficial half, greatly reduces series resistance.
But in existing IBC battery module, each tandem cell piece is often by difform metal welding (ribbon) serial connection, such as J type welding, E type welding and I type welding, this has aggravated the electrically complexity of serial connection of cell piece undoubtedly.In addition, different due to welding, cannot share with other solar modules, and recycling rate of waterused is lower.Moreover intrinsic circuit design is difficult to change, once need to increase bypass circuit (bypass circuit), E type welding and J type welding also must correspondingly increase, to making troubles on processing procedure.In view of this, how designing a kind of new solar module, to address the aforementioned drawbacks, is a person skilled problem urgently to be resolved hurrily in the industry.
Summary of the invention
For solar module of the prior art using welding existing above-mentioned defect while being electrically connected in series, thereby the invention provides solar module a kind of novelty, that there is single welding shape and be electrically connected in series solar battery sheet.
According to one aspect of the present invention, a kind of solar module is provided, this solar module comprises a cell piece array (cell array), this cell piece array has multiple solar battery sheets, the back side of each solar battery sheet comprises multiple electrode pairs that are made up of anodal (anode) and negative pole (cathode), the relative position of wherein said positive pole and described negative pole is 45 degree, between adjacent solar battery sheet, is electrically connected in series by a metal welding (ribbon).
An embodiment therein, described solar battery sheet is interdigital formula back of the body contact (Interdigitated Back Contact, an IBC) cell piece.
An embodiment therein, described cell piece array is the matrix of one 3 row × 4 row, and the solar battery sheet of adjacent two row is end to end to form S shape current path, and each solar battery sheet comprises 8 electrode pairs.
An embodiment therein, " I " type that is shaped as of described metal welding, described metal welding comprises a body, is positioned at one first connecting portion and one second connecting portion of described body both sides, the conducting terminal of wherein said the first connecting portion is electrically connected to one first electrode of an adjacent solar battery sheet, the conducting terminal of described the second connecting portion is electrically connected to one second electrode of another adjacent solar battery sheet, and the first electrode is contrary with the polarity of the second electrode.
An embodiment therein, each conducting terminal of described metal welding adopts bump design, to strengthen in electrical contact between the negative or positive electrode of solar battery sheet.
An embodiment therein, the below of described metal welding is also provided with an EPE composite membrane, in order to described metal welding and the described solar battery sheet of being electrically insulated.
An embodiment therein, the conducting terminal of the conducting terminal of described the first connecting portion and described the second connecting portion is crisscross arranged, and line between two conducting terminals is not vertical with described body.
An embodiment therein, line between the corresponding conducting terminal of the conducting terminal of described the first connecting portion and described the second connecting portion is vertical with described body, and the conducting terminal of described the first connecting portion is not equal to the conducting terminal of described the second connecting portion to the distance of body to the distance of body.
An embodiment therein, line between the corresponding conducting terminal of the conducting terminal of described the first connecting portion and described the second connecting portion is vertical with described body, and the conducting terminal of described the first connecting portion equals the conducting terminal of described the second connecting portion to the distance of body to the distance of body.
An embodiment therein, a part of solar battery sheet in described cell piece array is 90-degree rotation, 180 degree and 270 degree respectively.
Adopt solar module of the present invention, it comprises a cell piece array, this cell piece array has multiple solar battery sheets, the back side of each solar battery sheet comprises multiple electrode pairs that are made up of anodal and negative pole, relative position anodal and negative pole is 45 degree, between adjacent solar battery sheet, is connected in series by a metal welding charging property.Than prior art, the present invention can see through the positive pole at the cell piece back side and the relative position adjustment of negative pole, makes the metal welding that is electrically connected in series use change unified shape into, the complexity while having reduced component package.In addition, this solar module also can be by 90-degree rotation, 180 degree and 270 degree respectively of a part of cell piece wherein, make the electrode full symmetric of two adjacent cell pieces, and then the size of dwindling metal welding, in guaranteeing that all cell pieces are successfully connected in series, also can improve space availability ratio and packaging density, and increase the output power of module.
Brief description of the drawings
Reader, after having read the specific embodiment of the present invention with reference to accompanying drawing, will become apparent various aspects of the present invention.Wherein,
Fig. 1 illustrates the distribution of electrodes schematic diagram according to the solar battery sheet of one embodiment of the present invention;
Fig. 2 A to Fig. 2 C illustrates that respectively solar module of the present invention has the right distribution of electrodes schematic diagram of positive and negative electrode of varying number;
Fig. 3 illustrates the first preferred embodiment that adopts the solar battery sheet of Fig. 1 to form solar module;
Fig. 4 illustrates the structural representation of the metal welding of the solar module of Fig. 3;
Fig. 5 (a) illustrates respectively the shape schematic diagram of the metal welding of the solar module of Fig. 3 to Fig. 5 (d);
Fig. 6 illustrates the second preferred embodiment that adopts the solar battery sheet of Fig. 1 to form solar module;
Fig. 7 illustrates the structural representation of the metal welding of the solar module of Fig. 6;
Fig. 8 illustrates the shape schematic diagram of the metal welding of the solar module of Fig. 6;
Fig. 9 illustrates the 3rd preferred embodiment that adopts the solar battery sheet of Fig. 1 to form solar module;
Figure 10 illustrates the structural representation of the metal welding of the solar module of Fig. 9;
Figure 11 illustrates the shape schematic diagram of the metal welding of the solar module of Fig. 9;
Figure 12 illustrates that the solar cell of Fig. 3 carries out the connection diagram of component package with output power;
Figure 13 illustrates that the solar cell of Fig. 6 carries out the connection diagram of component package with output power; And
Figure 14 illustrates that the solar cell of Fig. 9 carries out the connection diagram of component package with output power.
Embodiment
For the technology contents that the application is disclosed is more detailed and complete, can be with reference to accompanying drawing and following various specific embodiments of the present invention, in accompanying drawing, identical mark represents same or analogous assembly.But those of ordinary skill in the art should be appreciated that the embodiment that hereinafter provided is not used for limiting the scope that the present invention is contained.In addition, accompanying drawing, only for being schematically illustrated, is not drawn according to its life size.
With reference to the accompanying drawings, the embodiment of various aspects of the present invention is described in further detail.
Fig. 1 illustrates the distribution of electrodes schematic diagram according to the solar battery sheet of one embodiment of the present invention.Fig. 2 A to Fig. 2 C illustrates that respectively solar module of the present invention has the right distribution of electrodes schematic diagram of positive and negative electrode of varying number.
With reference to Fig. 1, solar battery sheet 1 of the present invention, for example interdigital formula back of the body contact (Interdigitated Back Contact, IBC) cell piece, its back side comprises 8 electrode pairs.Each electrode pair is made up of anodal (anode) 10 and negative pole (cathode) 12.Wherein, anodal 10 represent with angle a with the relative position of negative pole 12.Preferably, positive pole 10 is 45 degree with the relative position of negative pole 12.Those skilled in the art is to be understood that, the solar battery sheet 1 of Fig. 1 is only schematic example, anodal 10 with the relative position of negative pole 12 prerequisite that is miter angle under, also can by the cell piece back side clockwise or be rotated counterclockwise, equally also be contained in spiritual scope of the present invention.
In addition,, in other some embodiment, the electrode pair at the back side of solar battery sheet 1 can elasticity be selected according to actual needs.For example, solar battery sheet 1 can only comprise single anodal 10 and single negative pole 12, wherein anodal 10 is arranged at respectively on the diagonal at the square back side with negative pole 12, that is, their relative position is 45 degree.As shown in Figure 2 A.In addition, the quantity of this electrode pair also can increase to 4 pairs or 12 pairs, as shown in Fig. 2 B and Fig. 2 C.
Fig. 3 illustrates the first preferred embodiment that adopts the solar battery sheet of Fig. 1 to form solar module.
With reference to Fig. 3, in this embodiment, solar module of the present invention comprises a cell piece array (cell array).This cell piece array has multiple solar battery sheets 21.The distribution of electrodes of this solar battery sheet 21 have been described in detail in Fig. 1, for simplicity, repeats no more herein.
In Fig. 3, schematically cell piece array is the matrix of one 3 row × 4 row.Between two adjacent solar battery sheets 21, be electrically connected in series by a metal welding (ribbon) 23 (as shown in the filling frame in figure).For example, the positive pole of the solar battery sheet lower end in cell piece array the 1st row the 1st row is electrically coupled to the negative pole of the solar battery sheet upper end in cell piece array the 2nd row the 1st row by metal welding 23.Thus, thus the solar battery sheets of adjacent two row are end to end has formed S shape current path (as shown in the dotted line in figure).Below will launch to describe by Fig. 4, Fig. 5 (a) correlative detail of metal welding 23 to Fig. 5 (d).
Fig. 4 illustrates the structural representation of the metal welding of the solar module of Fig. 3.Fig. 5 (a) illustrates respectively the shape schematic diagram of the metal welding of the solar module of Fig. 3 to Fig. 5 (d).
In conjunction with Fig. 4, Fig. 5 (a)～5 (d), the below of metal welding 23 is also provided with an EPE composite membrane 25, in order to the electrode of be electrically insulated metal welding 23 and the solar battery sheet below its.At this, EPE composite membrane 25 is to be composited by EVA/PET/EVA, is mainly used in the sensitive position of photovoltaic module inside, is used as electric insulation, physical separation and battery/welding location.In addition,, for strengthening in electrical contact between the negative or positive electrode of solar battery sheet, each conducting terminal (T1 or T2) employing bump design of metal welding 23, as shown in mark 231.
In this specific embodiment, taking Fig. 5 (a) as example, " I " type that is shaped as of metal welding 23.This metal welding 23 comprises a body 232, is positioned at one first connecting portion 234 and one second connecting portion 236 of body 232 both sides.The conducting terminal T2 of the conducting terminal T1 of the first connecting portion 234 and the second connecting portion 236 is crisscross arranged, and line between two conducting terminal T1, T2 is not vertical with body 232.
And, the conducting terminal T1 of the first connecting portion 234 is electrically connected to one first electrode of an adjacent solar battery sheet 21, the conducting terminal T2 of the second connecting portion 236 is electrically connected to one second electrode of another adjacent solar battery sheet 21, and the first electrode is contrary with the polarity of the second electrode.For example, when the first electrode is anodal, the second electrode is negative pole.Or when the first electrode is negative pole, the second electrode is anodal.Fig. 5 (c) is all short formula (body is narrower) welding with the metal welding of Fig. 5 (a), Fig. 5 (b) is long formula (body is wider) welding with the metal welding of Fig. 5 (d), because its connected mode is similar, repeat no more herein.
Fig. 6 illustrates the second preferred embodiment that adopts the solar battery sheet of Fig. 1 to form solar module.Fig. 7 illustrates the structural representation of the metal welding of the solar module of Fig. 6.Fig. 8 illustrates the shape schematic diagram of the metal welding of the solar module of Fig. 6.The main distinction of Fig. 6 and Fig. 3 is to be, in this embodiment, when the solar battery sheet in solar module is connected in series by metal welding charging property, the type of metal welding has tailed off.That is the sharing degree of metal welding 35 is higher.
With reference to Fig. 6, in order to reduce shape or the type of metal welding 35, some solar battery sheet in cell piece array can be rotated.In Fig. 6, if regard the position of solar battery sheet 31 as initial position, can be by solar battery sheet 33 Rotate 180 degree, make adjacent two cell pieces in the time of electrical serial connection electrode connecting line separately on same straight line.
Similarly, in Fig. 7, the below of metal welding 35 is also provided with an EPE composite membrane 37, in order to the electrode of be electrically insulated metal welding 35 and the solar battery sheet below its.In addition,, for strengthening in electrical contact between the negative or positive electrode of solar battery sheet, each conducting terminal (T1 or T2) employing bump design of metal welding 35, as shown in mark 351.And left side salient point 351 is different from the distance of right side salient point 351 to straight line L1 to the distance of straight line L1.Easily find out, no longer there is the situation that the conducting terminal in Fig. 5 (a)～Fig. 5 (d) is crisscross arranged in the metal welding 35 in Fig. 6, just the opposite, line between the corresponding conducting terminal T2 of the conducting terminal T1 of the first connecting portion 354 and the second connecting portion 356 is vertical with body 352, and the conducting terminal T1 of the first connecting portion 354 is not equal to the conducting terminal T2 of the second connecting portion 356 to the distance h 2 of body 352, as shown in Figure 8 to the distance h 1 of body 352.
Fig. 9 illustrates the 3rd preferred embodiment that adopts the solar battery sheet of Fig. 1 to form solar module.Figure 10 illustrates the structural representation of the metal welding of the solar module of Fig. 9.Figure 11 illustrates the shape schematic diagram of the metal welding of the solar module of Fig. 9.The main distinction of Fig. 9 and Fig. 3 is to be, in this embodiment, when the solar battery sheet in solar module is connected in series by metal welding charging property, the type of metal welding becomes single.That is, in this solar module, only there is a kind of metal welding 49 of shape.
In order to reach this purpose, in the time of component package, a part of cell piece dextrorotation in this module must be turn 90 degrees, another part cell piece turns clockwise 180, more a part of cell piece 270 degree (or being rotated counterclockwise 90 degree) that turn clockwise.In Fig. 9, if regard the position of solar battery sheet 41 as initial position, 270 degree that solar battery sheet 43 turned clockwise, by solar battery sheet 45 dextrorotation turnbacks, and turn 90 degrees solar battery sheet 47 dextrorotations.
With reference to Figure 10 and Figure 11, the below of metal welding 49 is also provided with an EPE composite membrane 48, in order to the electrode of be electrically insulated metal welding 49 and the solar battery sheet below its.In addition,, for strengthening in electrical contact between the negative or positive electrode of solar battery sheet, each conducting terminal (T1 or T2) employing bump design of metal welding 49, as shown in mark 491.And left side salient point 491 equals the distance of right side salient point 491 to straight line L2 to the distance of straight line L2.In other words, line between the corresponding conducting terminal T2 of the conducting terminal T1 of the first connecting portion 494 and the second connecting portion 496 is vertical with body 492, and the conducting terminal T1 of the first connecting portion 494 equals the conducting terminal T2 of the second connecting portion 496 to the distance of body 492, as shown in mark h to the distance of body 492.
Figure 12 illustrates that the solar cell of Fig. 3 carries out the connection diagram of component package with output power.As shown in figure 12, in the time adopting the solar module of above-mentioned Fig. 3 to carry out component package, on corresponding metal welding, form solder joint P1, P2, P3 and P4.Then,, by the electric power output line C1, C2, C3 and the C4 that form from solder joint cabling, concentrate on the middle output of solar module.
Figure 13 illustrates that the solar cell of Fig. 6 carries out the connection diagram of component package with output power.As shown in figure 13, in the time adopting the solar module of above-mentioned Fig. 6 to carry out component package, on corresponding metal welding, form solder joint P5, P6 and P7.Because the corresponding cell piece tandem of each solder joint is not electrically connected, therefore, in the time of component package, need to export separately by electric power output line C5, the C6 and the C7 that form from solder joint cabling respectively.
Figure 14 illustrates that the solar cell of Fig. 9 carries out the connection diagram of component package with output power.As shown in figure 14, in the time adopting the solar module of above-mentioned Fig. 9 to carry out component package, on corresponding metal welding, form solder joint P8, P9, P10 and P11.Because the corresponding cell piece tandem of each solder joint connects by metal welding charging property, only need be by same electric power output line C8 output when component package.Preferably, in order to prevent that electric current from recharging, also can between two adjacent solder joints, one-way conduction element be set, such as diode.
Adopt solar module of the present invention, it comprises a cell piece array, this cell piece array has multiple solar battery sheets, the back side of each solar battery sheet comprises multiple electrode pairs that are made up of anodal and negative pole, relative position anodal and negative pole is 45 degree, between adjacent solar battery sheet, is connected in series by a metal welding charging property.Than prior art, the present invention can see through the positive pole at the cell piece back side and the relative position adjustment of negative pole, makes the metal welding that is electrically connected in series use change unified shape into, the complexity while having reduced component package.In addition, this solar module also can be by 90-degree rotation, 180 degree and 270 degree respectively of a part of cell piece wherein, make the electrode full symmetric of two adjacent cell pieces, and then the size of dwindling metal welding, in guaranteeing that all cell pieces are successfully connected in series, also can improve space availability ratio and packaging density, and increase the output power of module.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, without departing from the spirit and scope of the present invention in the situation that, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replacement all drop in the claims in the present invention book limited range.
Claims (10)
1. a solar module, it is characterized in that, described solar module comprises a cell piece array, this cell piece array has multiple solar battery sheets, the back side of each solar battery sheet comprises multiple electrode pairs that are made up of anodal and negative pole, the relative position of wherein said positive pole and described negative pole is 45 degree, between adjacent solar battery sheet, is connected in series by a metal welding charging property.
2. solar module according to claim 1, is characterized in that, described solar battery sheet is an interdigital formula back of the body contact cell piece.
3. solar module according to claim 1, is characterized in that, described cell piece array is the matrix of one 3 row × 4 row, and the solar battery sheet of adjacent two row is end to end to form S shape current path, and each solar battery sheet comprises 8 electrode pairs.
4. solar module according to claim 3, is characterized in that, " I " type that is shaped as of described metal welding, and described metal welding comprises a body, is positioned at one first connecting portion and one second connecting portion of described body both sides,
The conducting terminal of wherein said the first connecting portion is electrically connected to one first electrode of an adjacent solar battery sheet, the conducting terminal of described the second connecting portion is electrically connected to one second electrode of another adjacent solar battery sheet, and the first electrode is contrary with the polarity of the second electrode.
5. solar module according to claim 4, is characterized in that, each conducting terminal of described metal welding adopts bump design, to strengthen in electrical contact between the negative or positive electrode of solar battery sheet.
6. solar module according to claim 5, is characterized in that, the below of described metal welding is also provided with an EPE composite membrane, in order to described metal welding and the described solar battery sheet of being electrically insulated.
7. solar module according to claim 4, is characterized in that, the conducting terminal of the conducting terminal of described the first connecting portion and described the second connecting portion is crisscross arranged, and line between two conducting terminals is not vertical with described body.
8. solar module according to claim 4, it is characterized in that, line between the corresponding conducting terminal of the conducting terminal of described the first connecting portion and described the second connecting portion is vertical with described body, and the conducting terminal of described the first connecting portion is not equal to the conducting terminal of described the second connecting portion to the distance of body to the distance of body.
9. solar module according to claim 4, it is characterized in that, line between the corresponding conducting terminal of the conducting terminal of described the first connecting portion and described the second connecting portion is vertical with described body, and the conducting terminal of described the first connecting portion equals the conducting terminal of described the second connecting portion to the distance of body to the distance of body.
10. solar module according to claim 9, is characterized in that, a part of solar battery sheet in described cell piece array is 90-degree rotation, 180 degree and 270 degree respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410186920.7A CN103928555A (en) | 2014-05-05 | 2014-05-05 | Solar battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410186920.7A CN103928555A (en) | 2014-05-05 | 2014-05-05 | Solar battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103928555A true CN103928555A (en) | 2014-07-16 |
Family
ID=51146715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410186920.7A Pending CN103928555A (en) | 2014-05-05 | 2014-05-05 | Solar battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103928555A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505414A (en) * | 2014-12-16 | 2015-04-08 | 新奥光伏能源有限公司 | Solar cell assembly |
| CN105830230A (en) * | 2016-03-21 | 2016-08-03 | 无锡携创新能源科技有限公司 | Battery assembly adopting back contact technology and production method thereof |
| CN107195696A (en) * | 2017-05-10 | 2017-09-22 | 晶澳（扬州）太阳能科技有限公司 | A kind of MWT solar battery sheets and the MWT solar cell modules being made using it |
| WO2017161692A1 (en) * | 2016-03-21 | 2017-09-28 | 无锡携创新能源科技有限公司 | Cell module using back contact process and manufacturing method therefor |
| CN107564985A (en) * | 2016-06-30 | 2018-01-09 | 比亚迪股份有限公司 | Cell piece component, cell piece matrix and solar cell module |
| CN107946398A (en) * | 2017-11-15 | 2018-04-20 | 钟建龙 | A kind of solar module |
| CN108028289A (en) * | 2015-09-01 | 2018-05-11 | 索拉威特公司 | With the solar array component system passively switched |
| US20230021066A1 (en) * | 2021-07-15 | 2023-01-19 | Zhejiang Aiko Solar Energy Technology Co., Ltd. | Back contact solar cell string and preparation method therefor, module, and system |
-
2014
- 2014-05-05 CN CN201410186920.7A patent/CN103928555A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505414A (en) * | 2014-12-16 | 2015-04-08 | 新奥光伏能源有限公司 | Solar cell assembly |
| CN108028289A (en) * | 2015-09-01 | 2018-05-11 | 索拉威特公司 | With the solar array component system passively switched |
| CN108028289B (en) * | 2015-09-01 | 2019-09-03 | 索拉威特公司 | With the solar array component system passively switched |
| CN105830230A (en) * | 2016-03-21 | 2016-08-03 | 无锡携创新能源科技有限公司 | Battery assembly adopting back contact technology and production method thereof |
| WO2017161692A1 (en) * | 2016-03-21 | 2017-09-28 | 无锡携创新能源科技有限公司 | Cell module using back contact process and manufacturing method therefor |
| CN105830230B (en) * | 2016-03-21 | 2018-07-27 | 无锡携创新能源科技有限公司 | A kind of back contacts technique battery component and preparation method thereof |
| US10608132B2 (en) | 2016-03-21 | 2020-03-31 | Suzhou Coop&Inno Green Energy Technology Co., Ltd | Back-contact cell module and method of manufacturing same |
| CN107564985A (en) * | 2016-06-30 | 2018-01-09 | 比亚迪股份有限公司 | Cell piece component, cell piece matrix and solar cell module |
| CN107195696A (en) * | 2017-05-10 | 2017-09-22 | 晶澳（扬州）太阳能科技有限公司 | A kind of MWT solar battery sheets and the MWT solar cell modules being made using it |
| CN107946398A (en) * | 2017-11-15 | 2018-04-20 | 钟建龙 | A kind of solar module |
| US20230021066A1 (en) * | 2021-07-15 | 2023-01-19 | Zhejiang Aiko Solar Energy Technology Co., Ltd. | Back contact solar cell string and preparation method therefor, module, and system |
| US11728442B2 (en) * | 2021-07-15 | 2023-08-15 | Zhejiang Aiko Solar Energy Technology Co., Ltd. | Back contact solar cell string and preparation method therefor, module, and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103928555A (en) | Solar battery module | |
| CN105874609B (en) | The modular manufacture of solar energy battery core with low resistance electrode | |
| CN104037265B (en) | A kind of method of HIT solar cell and electrode preparation and series connection | |
| JP5171001B2 (en) | Method for manufacturing solar cell module, solar cell and solar cell module | |
| WO2019214627A1 (en) | Solar cell string, string group, assembly, and manufacturing method thereof | |
| EP2816609B1 (en) | Solar cell | |
| JP2015070260A (en) | Solar cell | |
| CN108461551A (en) | A kind of solar battery sheet and lamination dual-glass solar cell assembly | |
| CN109509805A (en) | Imbrication component and method for manufacturing imbrication component | |
| CN215815896U (en) | Solar cell module | |
| CN110212051A (en) | A kind of heat resistanceheat resistant spot veneer block photovoltaic module | |
| CN207753025U (en) | Portrait type photovoltaic laminate component | |
| CN109888033A (en) | Solar module | |
| CN214753809U (en) | Back contact solar cell string, assembly and system | |
| CN104269453A (en) | High-efficiency back contact solar cell back sheet without main grids, high-efficiency back contact solar cell assembly without main grids and manufacturing technology | |
| CN207367985U (en) | Double-sided solar cell and solar cell module | |
| US20180294367A1 (en) | Back contact solar cell substrate, method of manufacturing the same and back contact solar cell | |
| CN204204882U (en) | Without main grid high efficiency back contact solar cell assembly | |
| CN204230264U (en) | Without main grid high efficiency back contact solar cell backboard and assembly | |
| CN203521434U (en) | Solar cell sheet, solar cell string, and solar cell assembly | |
| CN110459619A (en) | Selenium antimony trisulfide battery component and preparation method thereof | |
| CN109904261A (en) | Solar module | |
| KR20130008918A (en) | Mixed type photovoltaic module | |
| CN213093208U (en) | MWT solar cell back electrode structure and battery pack | |
| CN209675305U (en) | Solar module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140716 |