CN209526092U - Solar battery interconnection architecture - Google Patents

Abstract

This application discloses a kind of solar battery interconnection architectures, including at least two panels solar panel being arranged with imbricated texture, the front of each solar panel, which is arranged side by side, a plurality of grid line, the front of each solar panel, which is also arranged side by side, a plurality of conducting wire, and conducting wire intersects and is conductively connected with grid line；The overlapping place of two adjacent solar panels is provided with electrode disk on underlying solar panel, and electrode disk is electrically connected with the electrode for the Solar panel backside being located above, and electrode disk is electrically connected with conducting wire.Above scheme reduces the internal resistance of interconnection architecture, so that loss caused by the resistance of interconnection architecture can be greatly reduced by the way that multiple conducting wires are arranged.In addition, usually the sunlight for being incident on conducting wire can be reflected into solar battery plate surface again using conducting wire, the utilization rate of the light of solar panel is improved, adverse effect caused by traditional gate line electrode shading is reduced.

Description

Solar battery interconnection architecture

Technical field

The utility model relates generally to solar photovoltaic technology field, and in particular to a kind of solar battery is mutually coupled Structure.

Background technique

Currently, gradually exhausting with fossil energy, solar-energy photo-voltaic cell is as new energy substitution scheme, using more Come more extensive.Solar-energy photo-voltaic cell is the device that the luminous energy of the sun is converted to electric energy.Solar-energy photo-voltaic cell utilizes photoproduction Volt principle generates carrier, is then drawn carrier using electrode, to obtain utilizable electric energy.

The interconnection of solar-energy photo-voltaic cell is an important ring for photovoltaic solar power generation, and technical solution is for photovoltaic power generation There can be important influence.Imbricated texture is a kind of preferable scheme for realizing solar-energy photo-voltaic cell interconnection.Imbricated texture knot In structure, the mutually overlapping connection (alternatively referred to as overlapping) of solar-energy photo-voltaic cell head and the tail drastically reduces solar-energy photo-voltaic cell By the gap in conventional arrangement interconnection architecture, more solar-energy photo-voltaic cell units can be set on unit area, improve Effective sun light utilization efficiency.

However, using the solar-energy photo-voltaic cell interconnection scheme of imbricated texture at present, come with some shortcomings, such as: it is existing The internal resistance of the solar-energy photo-voltaic cell interconnection scheme of imbricated texture is excessive, affects whole power output；Due to its own Interconnection architecture transmits the biggish limitation of resistance, and each solar panel (also referred to as solar battery sheet) needs smaller transmission Distance (namely solar panel needs do relatively narrow), if therefore using the solar panel of cutting technique, need by by Silicon rod slicing and the full wafer solar panel being process, are repeatedly cut, and the solar panel of multi-disc narrower width, cutting are obtained The increase of number can bring the decline of yield rate, and increase the risk of solar panel crack.In addition, current solar-electricity The general of pond plate forms gate line electrode by way of silk-screen printing silver paste, and using such mode, cost is relatively high, printing There is shading in gate electrode, adversely affect to photoelectric conversion efficiency.

Utility model content

In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of solar battery interconnection architecture, is at least used It is high with the risk for solving big existing interconnection architecture internal resistance, solar panel fragment rate and crack, using silk-screen printing silver paste shape It is at high cost at gate line electrode, the problem of being adversely affected to photoelectric conversion efficiency.

The utility model provides a kind of solar battery interconnection architecture, including at least two panels sun being arranged with imbricated texture Energy solar panel, the front of each solar panel, which is arranged side by side, a plurality of grid line,

The front of each solar panel, which is also arranged side by side, an a plurality of conducting wire, the conducting wire intersect with the grid line and It is conductively connected；

The overlapping place of the solar panel of adjacent two is provided with electrode on underlying solar panel Disk, the electrode disk are electrically connected with the electrode for the Solar panel backside being located above, and electrode disk is electrically connected with the conducting wire It connects.

Further, the solar panel is full wafer solar panel or is parallel to the grid line side by full wafer solar panel edge To progress half, one third, a quarter, sub- solar panel made of 1/5th or 1/6th cuttings.

Further, the front of each solar panel is equipped with the polymer film of light transmission, each conducting wire with The polymer film is fixedly connected.

Further, the polymer film includes base and the adhesive layer that is set in the base, the adhesive layer patch Together in the front of the solar panel.

Further, each conducting wire is at least partially disposed at the adhesive layer.

Further, be provided with pierced pattern on the polymer film, the pierced pattern be located at adjacent two described in lead Between line.

Further, the conducting wire outer peripheral surface is provided with conductive layer.

Further, overlapping place's width of the two adjacent solar panels is 0.1-3mm.

Further, the conducting wire is vertical with the grid line.

Further, the thickness of the polymer film is between 5 microns to 150 microns.

Further, the quantity of the conducting wire of the front setting of each solar panel is 3-100 root.

Further, on a straight line, being provided with one section of grid line or be arranged at intervals with grid line described in multistage.

Above scheme, the front of solar panel by conducting wire by after the connection of each grid line, then by electrode disk with it is adjacent The electrode at the back side of solar panel is electrically connected, since in commensurateiy wide, the cross-sectional area of conducting wire is compared with conventional screen The cross-sectional area of the argentiferous gate line electrode of printing is big, is the section comparatively optimized, therefore can accomplish electric current transmission Maximum efficiency.In addition, the internal resistance of interconnection architecture is reduced, so that caused by the resistance of interconnection architecture by setting multiple conducting wires Loss can be greatly reduced.In addition, usually the sunlight for being incident on conducting wire can be reflected into solar-electricity again using conducting wire Pond plate surface improves the utilization rate of the light of solar panel, reduces adverse effect caused by traditional gate line electrode shading.

Detailed description of the invention

By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other Feature, objects and advantages will become more apparent upon:

Fig. 1 is the perspective view of solar battery interconnection architecture provided by the embodiment of the utility model；

Fig. 2 is the perspective view that place is overlapped in solar battery interconnection architecture provided by the embodiment of the utility model；

Fig. 3 is the partial enlarged view I of Fig. 1；

Fig. 4 is the structural schematic diagram of Solar panel backside provided by the embodiment of the utility model；

Fig. 5 is schematic diagram of the conducting wire provided by the embodiment of the utility model in conjunction with polymer film；

Fig. 6 is the schematic diagram provided by the embodiment of the utility model for showing hollow out figure；

Fig. 7 is the schematic diagram provided by the embodiment of the utility model for showing one of grid line structure；

Fig. 8 is the schematic diagram provided by the embodiment of the utility model for showing another grid line structure.

Specific embodiment

The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched The specific embodiment stated is used only for explaining relevant utility model, rather than the restriction to the utility model.It further needs exist for illustrating , part relevant to utility model is illustrated only for ease of description, in attached drawing.

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As Figure 1-Figure 4, solar battery interconnection architecture provided by the utility model, including what is be arranged with imbricated texture At least two panels solar panel 1 wherein shows 3 solar panels 1 in Fig. 1, the front of each solar panel 1 is Being arranged side by side has a plurality of grid line 3, and a plurality of grid line 3 is such as, but not limited to uniform intervals parallel arrangement, each solar panel 1 Front, which is also arranged side by side, a plurality of conducting wire 2, and such as, but not limited to, 2 uniform intervals parallel arrangement of conducting wire, conducting wire 2 intersects with grid line 3 And it is conductively connected；The overlapping place 4 of two adjacent solar panels 1 is provided with electrode on underlying solar panel 1 Disk 9, electrode disk 9 is electrically connected with the electrode 11 at 1 back side of solar panel being located above, and electrode disk is electrically connected with conducting wire 2.

It is mentioned herein to be arranged side by side, it can be parallel setting, be also possible to nonparallel setting.Such as it is but unlimited In a plurality of conducting wire arranged side by side can be arranges in flat shape, radial can also arrange.

When above-mentioned front refers to that solar panel 1 works, towards the one side of the sun, the back side is and front opposite one Face.

The overlapping place 4 of two adjacent solar panels 1 namely the lap-joint of two adjacent solar panels.

Conducting wire 2 mentioned herein simultaneously not merely refers to that section is the conducting wire of positive round, is also possible to ellipse etc..

Above scheme after the front of solar panel 1 is connected each grid line 3 by conducting wire 2, then passes through electrode disk and phase The electrode at the back side of adjacent solar panel 1 is electrically connected, since in commensurateiy wide, the cross-sectional area of conducting wire 2 is more conventional The cross-sectional area of the argentiferous gate line electrode of silk-screen printing is big, is the section comparatively optimized, therefore can accomplish that electric current passes Defeated maximum efficiency.In addition, the internal resistance of interconnection architecture is reduced, so that the resistance of interconnection architecture is made by setting multiple conducting wires 2 At loss can be greatly reduced.Further, since the reduction of interconnection architecture internal resistance, solar panel 1 can use biggish Unit, it is a solar panel 1 that maximum, which can be full wafer silicon wafer to manufacture,.It is led in addition, can will be usually incident on using conducting wire 2 The sunlight of line 2 is reflected into the surface of solar panel 1 again, improves the utilization rate of the light of solar panel 1, reduces It is adversely affected caused by traditional gate line electrode shading.

Wherein, electrode disk 9 can be set as one whole along the edge of solar panel, can also be along solar energy The edge of solar panel is arranged multiple electrodes disk 9, such as the quantity of electrode disk 9 is consistent with the quantity of conducting wire 2, electrode disk 9 with lead Line 2 connects one to one.In order to save material, the one end that can be conducting wire 2 is electrically connected with electrode disk 9.

Further, solar panel is full wafer solar panel or is carried out by full wafer solar panel along 3 direction of grid line is parallel to Half, one third, a quarter, sub- solar panel made of 1/5th or 1/6th cuttings.

Full wafer solar panel mentioned herein by the full wafer silicon wafer to manufacture after silicon rod slicing whole piece solar panel.

The internal resistance of solar panel 1 can be reduced due to being provided with after conducting wire 2 on solar panel 1, it is maximum Solar panel 1 can be full wafer solar panel, certainly can also use full wafer solar panel half, one third, four / mono-, 1/5th or six/first-class size, as the solar battery of bigger area can be used in the interconnection architecture Plate 1, in the interconnection architecture of same area, the quantity of the solar panel 1 of use is reduced, therefore reduces technique connection Number can then be reduced simultaneously as greater area of solar panel 1 can be used to full wafer solar panel Cutting times thereby reduce the risk because of cutting bring mechanical damage, fragment rate and crack.

Further, the front of each solar panel 1 is equipped with the polymer film of light transmission, each conducting wire 2 and polymer Film is fixedly connected.

In production, the polymer film of light transmission can be fixed in a manner of first by conducting wire 2 by hot pressing etc..In order to make in next step When making, conducting wire 2 can come into full contact with grid line 3, then a part of cambered surface of conducting wire 2 can protrude the surface of polymer film.Later, will The polymer film for being fixed with conducting wire is laid on the front of solar panel 1, and makes a part of arc of the protrusion polymer film of conducting wire 2 Facing towards grid line, hot pressing is carried out to polymer film, so that it is sticked to the front of solar panel 1, with each conducting wire 2 of fixation, and protects Each conducting wire 2 is demonstrate,proved to be electrically connected with grid line 3.Using such mode, the laying and contraposition of conducting wire 2 are more convenient and smart in manufacturing process Really, and process complexity is reduced, or even reduces processing step, moreover it is possible to guarantee that conducting wire 2 is adequately electrically connected with grid line 3.

Further, it see also Fig. 5, polymer film includes base 7 and the adhesive layer being set in base 76, adhesive layer 6 Fit in the front of solar panel 1.

Polymer film is using adhesive layer 6 and the lamination layer structure of base 7, and in processing, adhesive layer 6 fits in solar-electricity The front of pond plate 1, plays the role of adhesive layer, in addition, adhesive layer 6 becomes the contact with solar panel 1 of conducting wire 2 For flexible contact, fragment rate is reduced.Base 7 solidifies after hot-pressing, has certain intensity, and can playing protection, it is covered The effect of the structure of lid.

Further, the material of base and/or adhesive layer be at least cellulose acetate, polyolefin, polyamide, polyphenylene oxide, Fluororesin, polymethyl methacrylate, polysulfones, polyester, epoxy resin, organic siliconresin, polyimide resin, phenolic resin, At least any one in polyurethane and acrylic resin.

It is preferred that the material of adhesive layer 6 can be polyolefin, polyamide, polyphenylene oxide, fluororesin, poly- methyl-prop At least any one in e pioic acid methyl ester, polysulfones and polyester.

It is preferred that the material of base 7 can be epoxy resin, organic siliconresin, polyimide resin, phenolic aldehyde tree At least any one in rouge, polyurethane and acrylic resin.

Further, each conducting wire 2 is at least partially disposed at adhesive layer 6, it can be ensured that during hot pressing, conducting wire 2 quilt It is depressed into 1 front of solar panel and is contacted with grid line 3, realize good electrical connection.

Further, as shown in fig. 6, being provided with pierced pattern 8 on polymer film, pierced pattern 8, which is located at adjacent two, is led Between line 2.Pierced pattern 8 can be any shape, such as rectangle, circle, ellipse etc..It is to make that pierced pattern 8, which is arranged, Light is irradiated to solar panel front directly through pierced pattern 8, so that light transmittance is ensured, and reduces polymerization The usage amount of object film, reduces costs.

Further, 2 outer peripheral surface of conducting wire is provided with conductive layer 5.Conductive layer 5 plays adhesive or solder in hot pressing Effect, be conducive to realize conducting wire 2 be preferably electrically connected with grid line 3, improve the reliability of connection.

Further, the material of conductive layer 5 is metal or alloy of the fusing point between 70-180 degree；Alternatively,

The material of conductive layer 5 is electroconductive resin of the softening temperature between 90-120 degree.Using the conductive layer of above-mentioned temperature 5, lower hot pressing temperature can be used, reduce thermal stress when hot pressing, prevent 1 crack of solar panel or broken The problem of.

Further, the material of conductive layer 5 includes any material in Ag, Bi, Cd, Ga, In, Pb, Sn, Ti, Zn Simple substance or alloy can choose its corresponding alloy positioned at this temperature range if the fusing point of simple substance is higher than this temperature range； Alternatively, the material of conductive layer 5 includes electroconductive resin, the softening temperature of the electroconductive resin is between 90-120 degree, electroconductive resin packet The conducting particles for including resin base material and being set in resin base material, resin base material include cellulose acetate, fluororesin, polysulfones tree Any one of rouge, polyester resin, polyamide, polyurethane resin and polyolefin resin, conducting particles include gold, silver, At least any one in copper, aluminium, zinc, nickel and graphite.The shape of conducting particles can be graininess and/or sheet.

Further, 4 width of overlapping place of two adjacent solar panels 1 is 0.1-3mm.It can be protected using this width The contact performance of adjacent two solar panels connection is demonstrate,proved, and the effect of blocking that will not should be overlapped causes solar panel need not The loss wanted.Such as the width at overlapping place is set as 0.5mm, 1.5mm, 2mm, 3mm etc..

Further, conducting wire 2 is vertical with grid line 3.So that electric current transmission line is most short, loss is reduced.

Further, it is provided with the conducting wire (not shown) that is connected on each solar panel, is connected and leads Line is electrically connected with each conducting wire 2 on the solar panel 1 where it.Be connected as a preferred method, conducting wire with lead Line 2 is vertical.

By the way that the conducting wire that is connected is arranged between conducting wire 2, electrode loose contact region and solar-electricity can be made Electric energy transmission performance caused by bad connection is guaranteed between the plate of pond, improves yields.The line footpath of conducting wire of being connected can be with It is identical with conducting wire 2, it can also be different.The conducting wire that is connected can be set one, more can also be arranged with appropriate intervals, setting Amount will comprehensively consider the transmission for guaranteeing electric current, and guarantee less shading as far as possible.

Further, the thickness of polymer film can polymerize between 5 microns to 150 microns to guarantee under heat Object film has enough stability, and polymer film surface contraction is small after the cooling period, and surface is flat.

Further, the quantity of the conducting wire 2 of the front setting of each solar panel 1 is 3-100 root.Multiple conducting wires 2 can It arranges at uniform intervals.

The quantity of setting can comprehensively consider the transmission for guaranteeing electric current, and guarantee less shading as far as possible to determine.

Further, on a straight line, being provided with one section of grid line or be arranged at intervals with multistage grid line.

As shown in fig. 7, being to be provided with one section of grid line 3 in a straight line on solar panel 1, on 1 side of positive energy solar panel Multiple electrodes disk 9 has been uniformly arranged at edge.

As shown in figure 8, being that interval is provided with multistage grid line 3 in a straight line on solar panel 1.Wherein every section of grid line 3 all connect have conducting wire.Using the grid line 3 of multisection type, the material of the processing of grid line 3 can be saved, and is further reduced shading, The effective light absorption area for increasing solar panel, to improve photoelectric conversion efficiency.It is uniform in 1 edge of positive energy solar panel Provided with multiple electrodes disk 9.

Further, the material of conducting wire 2 can select at least appointing in copper, aluminium, silver, gold, corronil and ormolu It is a kind of.The wire rod of the lamination layer structures such as copper-clad aluminum conductor also can be used in conducting wire 2.Conducting wire 2 uses copper wire as a preferred method, Using copper wire both conductivity with higher, and it is relative to noble metals such as use gold and silver, and has the advantages that at low cost.

Conductive layer 5 is such as, but not limited to be formed in the outer surface of conducting wire 2 using techniques such as coatings.The line footpath of conducting wire 2 is for example But be not limited to 50um, 100um, 150um etc..

Further, electrode disk 9 and the electrode at 1 back side of solar panel that is located above can by setting secondly Bridging agent 10 between person is electrically connected, and bridging agent 10 can be, but not limited to lead for soldering paste, softening temperature 90-120 degree Electric resin, fusing point are in metal or alloy of 70-180 degree etc..

Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art Member is it should be appreciated that utility model range involved in the application, however it is not limited to made of the specific combination of above-mentioned technical characteristic Technical solution, while should also cover in the case where not departing from inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein Can technical characteristic replaced mutually and the technical solution that is formed.

Claims (12)

1. a kind of solar battery interconnection architecture, each described including at least two panels solar panel being arranged with imbricated texture The front of solar panel, which is arranged side by side, a plurality of grid line, which is characterized in that

The front of each solar panel, which is also arranged side by side, a plurality of conducting wire, and the conducting wire intersects with the grid line and conduction Connection；

The overlapping place of the solar panel of adjacent two is provided with electrode disk on underlying solar panel, institute It states electrode disk to be electrically connected with the electrode for the Solar panel backside being located above, and the electrode disk is electrically connected with the conducting wire It connects.

2. solar battery interconnection architecture according to claim 1, which is characterized in that the solar panel is full wafer Solar panel carries out half, one third along being parallel to the grid line direction by full wafer solar panel, a quarter, five/ Sub- solar panel made of one or 1/6th cuttings.

3. solar battery interconnection architecture according to claim 1, which is characterized in that each solar panel is just Face is equipped with the polymer film of light transmission, and each conducting wire is fixedly connected with the polymer film.

4. solar battery interconnection architecture according to claim 3, which is characterized in that the polymer film include base and The adhesive layer being set in the base, the adhesive layer fit in the front of the solar panel.

5. solar battery interconnection architecture according to claim 4, which is characterized in that at least partly position of each conducting wire In the adhesive layer.

6. solar battery interconnection architecture according to claim 5, which is characterized in that be provided with and engrave on the polymer film Null pattern, the pierced pattern is between the two adjacent conducting wires.

7. solar battery interconnection architecture according to claim 1-6, which is characterized in that the conducting wire outer peripheral surface It is provided with conductive layer.

8. solar battery interconnection architecture according to claim 1-6, which is characterized in that described in adjacent two too Overlapping place's width of positive energy solar panel is 0.1-3mm.

9. solar battery interconnection architecture according to claim 1-6, which is characterized in that the conducting wire with it is described Grid line is vertical.

10. according to the described in any item solar battery interconnection architectures of claim 3-6, which is characterized in that the polymer film Thickness between 5 microns to 150 microns.

11. solar battery interconnection architecture according to claim 1-6, which is characterized in that each solar energy The quantity of the conducting wire of the front setting of solar panel is 3-100 root.

12. solar battery interconnection architecture according to claim 1-6, which is characterized in that on a straight line, if It is equipped with one section of grid line or is arranged at intervals with grid line described in multistage.