CN103208546B - A kind of solar cell module - Google Patents
A kind of solar cell module Download PDFInfo
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- CN103208546B CN103208546B CN201210086064.9A CN201210086064A CN103208546B CN 103208546 B CN103208546 B CN 103208546B CN 201210086064 A CN201210086064 A CN 201210086064A CN 103208546 B CN103208546 B CN 103208546B
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- 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
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention provides a kind of solar cell module, on array, be electrically connected with the electrode leads to client for extracted current that extends battery component; The bypass diode that is also connected in parallel to protection solar battery sheet on described array, described bypass diode is arranged in the first terminal box or is arranged in the first terminal box and the second terminal box; On described array, be electrically connected with the diode exit that extends battery component, described bypass diode is connected in parallel by diode exit and array; Described at least part of electrode leads to client is electrically connected with the second terminal box; Described diode exit is electrically connected with the first terminal box or diode exit is electrically connected with the first terminal box and the second terminal box. Can shorten to a great extent the length of positive and negative exit, to reduce the internal resistance of solar cell module. Assembling between battery modules, also can shorten the length of cable in terminal box to a great extent simultaneously, reduces the steadiness of resistance and connection, and the assembling between battery modules is also more convenient simultaneously.
Description
Technical field
The present invention relates to solar cell module field.
Background technology
In existing solar power system, that the connection in series-parallel of multi-disc cell piece is obtained to suitable voltage value and current value composition solar battery array, by backsheet layer, adhesive layer, array, adhesive layer and glass plate form solar module after setting gradually lamination, seal along frame is set in week, left and right or upper and lower two edges at solar module are just connecting, negative exit 1, 2 just draw, negative current, in the middle of solar module, connect diode exit 3 and connect bypass diode, just, negative exit 1, 2, diode exit 3 is all drawn from the centre at the backsheet layer edge of solar module, wherein just, negative exit 1, 2 also can be connected with bypass diode, play the effect of bypass diode, the terminal box 10 that access contains bypass diode, terminal box 10 is provided with two connecting portions of the cable that connects load. so just, negative exit 1, 2 length will be very long, particularly for powerful large battery, its cell piece in parallel is many, just drawing welding and negative to draw the distance that welding is separated by farther, the increase of bus bar length, increase the resistance of busbar, and electric current in whole solar cell module is derived by busbar, current density on busbar is large, the increase of busbar resistance, increase the loss of solar cell module power, reduce the power of solar cell module, in addition, the cable of common 1m also can loss Partial Power in installation process, and power station install in cable width larger, between unfixed cable and cable, mutually tangle, not only affect outward appearance but also affect maintenance.
Summary of the invention
For solving the large and low problem of power of the internal resistance of existing solar cell module, the invention provides a kind of internal resistance that can reduce solar module, improve the solar cell module of solar module power.
The object of this invention is to provide a kind of solar cell module and comprise that battery component, packaged battery assembly are positioned at frame, the first terminal box and second terminal box on battery component week edge; Wherein, battery component comprises the backsheet layer, adhesive layer, array, adhesive layer and the glass plate that set gradually, described array is connected and/or is composed in parallel by some solar battery sheets, is electrically connected with the electrode leads to client for extracted current that extends battery component on array; The bypass diode that is also connected in parallel to protection solar battery sheet on array, bypass diode is arranged in the first terminal box or is arranged in the first terminal box and the second terminal box; On array, be electrically connected with the diode exit that extends battery component, bypass diode is connected in parallel by diode exit and array; Electrode leads to client is electrically connected with the second terminal box at least partly; Diode exit is electrically connected with the first terminal box or diode exit is electrically connected with the first terminal box and the second terminal box.
The present invention reduces internal resistance for realizing, reduce the length of busbar, an extra electrode connection box can be only set more, a positive terminal box or a negative terminal box can be only set, wherein, electrode leads to client comprises positive exit and negative exit, radical the present invention of positive exit and negative exit does not limit, the present invention only need have electrode leads to client to access extra electrode connection box, generally preferred electrode terminal box is nearer apart from the electrode leads to client of access and the junction of solar module, shorten the length of electrode leads to client, reduce internal resistance, it can be partial electrode exit, for example positive exit or negative exit, when positive exit, when negative exit can be many, also can be the positive exit of part or the negative exit of part, at least can reach the object that shortens electrode leads to client, the junction that while also can arrange positive exit and negative exit and solar battery array according to the annexation of solar battery array is nearer, now also can be by positive exit, negative exit is introduced electrode connection box simultaneously, electrode connection box is arranged on the compare Jin position, junction of the positive exit of distance and negative exit and solar battery array.
Wherein, positive exit, negative exit are the part that connects array extracted current, generally be connected with terminal box, by terminal box extracted current, can be various shapes, can one-part form, also can multisection type, the present invention does not limit, and can be that sheet can be also strip etc., only needs conduction.
Preferably, the first terminal box is diode terminal box; The second terminal box is electrode connection box, and electrode leads to client comprises positive exit and negative exit, and positive exit is electrically connected and/or bears exit with electrode connection box and is electrically connected with electrode connection box.
Further preferably, electrode connection box is positive terminal box, and positive exit is electrically connected with positive terminal box; Negative exit is electrically connected with diode terminal box. Or further preferred, electrode connection box is negative terminal box, bears exit and is electrically connected with negative terminal box; Positive exit is electrically connected with diode terminal box. Only have in a kind of electrode leads to client access electrode connection box of polarity, the position of electrode connection box better arranges, only need from the junction of this polarity exit and solar module close to optimum. The position that positive exit and negative exit are drawn is inconsistent, connects different terminal boxes, and the position of set of terminal box is also inconsistent.
Number the present invention of bypass diode is not particularly limited, design according to solar battery array, can contain multiple, be arranged in whole or in part the first terminal box, also can there is part to be arranged in the second terminal box, the radical of diode exit designs according to the number of bypass diode, diode exit is for being connected with protection device, general not as the electric current exit of battery, internal resistance impact when itself is normally worked on solar module is less, for diode exit draw and position the present invention of bypass diode does not limit, the present invention is preferably placed in diode terminal box, diode exit is electrically connected with diode terminal box.
Preferably, electrode leads to client is electrically connected with array by the conductive strips of drawing on solar battery sheet, and described diode exit is electrically connected with array by the conductive strips of drawing on solar battery sheet.
Preferably, electrode leads to client and diode exit pass from backsheet layer respectively, and the first terminal box is positioned at backsheet layer surface, and the second terminal box is positioned at backsheet layer surface.
Preferably, electrode leads to client is electrically connected with the conductive strips on the row of array or the two edges cell piece of row, at least partly electrode leads to client passes from the backsheet layer position of the junction that is electrically connected with conductive strips, and the second terminal box is positioned at electrode leads to client backsheet layer and passes place.
Electrode leads to client comprises positive exit and negative exit, and the second terminal box is positive terminal box, further preferred, and positive exit passes from the backsheet layer position of the junction that be electrically connected with conductive strips, and just terminal box is positioned at positive exit backsheet layer and passes place. Or further preferably the second terminal box is negative terminal box, negative exit passes from the backsheet layer position of the junction that be electrically connected with conductive strips, and negative terminal box is positioned to be born exit backsheet layer and pass place.
Preferably, electrode connection box is positioned at backsheet layer surface, edge, i.e. a close together for isolated edge of solar module. The backsheet layer surface that is generally the position that electrode leads to client is connected with solar battery array, above-mentioned edge is generally edge, long limit.
Further preferably, electrode connection box is 65-85mm from the distance at an above-mentioned edge of solar module.
Further preferably, the first terminal box is diode terminal box, and described diode terminal box is the wide 1/3-1/2 of solar cell module or is the 1/3-1/2 of the length of solar cell module from the distance at a described edge. From the long limit of solar module or minor face about centre of being generally minor face draw diode terminal box, for the extraction location of a terminal box of routine, facilitate the laying of bypass diode and the design of diode exit to draw. The radical of general diode exit is more, connects more complicatedly, adopts this kind of structure, can make diode exit in the setting of diode terminal box bilateral symmetry, prevents the winding of diode exit, prevents short circuit, connects and is simple and easy to realization.
The first terminal box and the second terminal box can all be positioned at the backsheet layer surface of solar module one end. Be positioned at a side of solar module, now preferably the first terminal box is positioned at about centre position of this side, and the second terminal box is positioned at a position of this side.
The first terminal box and the second terminal box also can lay respectively at the backsheet layer surface of solar module upper and lower end parts or left and right end portions. Be positioned at the both sides of solar module, now preferably the first terminal box is positioned at wherein about centre position of a side, and the second terminal box is positioned at a position of opposite side. Preferably this kind of structure, is conducive to assembling of solar module and module, and what energy was more effective reduces internal resistance, long and more loaded down with trivial details connected mode need not be set, the risk that reduces costs and be short-circuited and open circuit. Adopt technical scheme of the present invention can simply realize this structure, and longer busbar need not be set, reduce the internal resistance of cell.
Wherein, the distance at the edge of electrode connection box and solar module refers to the distance of electrode connection He center from the edge of solar module.
Wherein, " on ", the solar cell module that adopts for convenience of describing of D score, " left side ", " right side " directional terminology that those skilled in the art can observe while generally placing.
Preferably, backsheet layer is provided with the hole for passing electrode leads to client and diode exit, and the position that is positioned at hole between the adhesive layer contacting with backsheet layer and array surface is provided with pad.
Preferably, between positive exit, negative exit and diode exit and solar module, be equipped with the sealing of insulated enclosure thing.
Preferably, array is composed in series by the capable m row of a n solar battery sheet, and n solar battery sheet in row is connected in series and forms series connection row, and every two series connection row are parallel with a bypass diode.
Preferably, bypass diode comprises at least two, between described bypass diode, is one another in series.
Preferably, the length of the electrode leads to client of connection the second terminal box is 200-250mm.
Preferably, the second terminal box comprises box body; Be positioned at the electrode leads to client access port of cartridge outer surface; Be positioned at cartridge outer surface for connecting the load connecting portion of cable of load; The first buckle for connecting electrode exit or the first welding rod that are arranged in box, the first buckle or the first welding rod and load connecting portion conduct.
The second terminal box can also comprise the bypass diode that is arranged in box; Be positioned at the diode exit access port of cartridge outer surface; Be arranged in box for connecting the second buckle or second welding rod of diode exit, the second buckle or the second welding rod and bypass diode conduct. Diode exit access port and electrode leads to client access port can be same, can be also multiple, and the number of diode exit access port itself can be also multiple.
Further preferably, electrode leads to client snaps in the first buckle or welds with the first welding rod; In the second terminal box, also containing the thermal component that is useful on heat radiation, be positioned at box body.
Preferably, the first terminal box comprises box body; Be positioned at the diode exit access port of cartridge outer surface; Be arranged in box for connecting the second buckle or second welding rod of diode exit, the second buckle or the second welding rod and bypass diode conduct.
Preferably, the first terminal box comprises the electrode leads to client access port that is positioned at cartridge outer surface; Be positioned at cartridge outer surface for connecting the load connecting portion of cable of load; The first buckle for connecting electrode exit or the first welding rod that are arranged in box, described the first buckle or the first welding rod and load connecting portion conduct.
Project organization of the present invention, can shorten the length of positive exit or negative exit to a great extent, more than shortening 310mm, thereby reduces the internal resistance of solar cell module. Assembling between battery modules simultaneously, also can shorten to a great extent the length of cable in terminal box, reduce the steadiness of resistance and connection, the assembling between battery modules is simultaneously also more convenient, and project organization of the present invention can be reduced to 220mm by 1000mm by the length of electrode connection box cable.
In order to describe the duty of battery, often battery and load system are simulated with an equivalent circuit. Under constant light is shone, an in running order solar cell, its photoelectric current does not change with duty, in equivalent circuit, it is regarded as to constant-current source so long. The photoelectric current part load R that flows throughL, set up terminal voltage V at load two ends, conversely it again forward bias in p-n junction diode, cause the dark current I of one and photoelectric current opposite directionbk, like this, the equivalent circuit of a desirable PN homojunction solar cell is just drawn into as shown in Figure 1. But, due to above with the electrode at the back side with contact, and material itself has certain resistivity, base and top layer all inevitably will be introduced additional resistance. The flow through electric current of load, during through them, must cause loss. In equivalent circuit, can be by a series resistance R for their total effectSRepresent. Due to the electric leakage of battery edge with while making metallic electrode, locate the metal bridge electric leakage that forms etc. at micro-crack, the cut etc. of battery, make the part should be by the short circuit current of load, the available resistance R in parallel of size of this effectShCome equivalent. Its equivalent circuit is just depicted as the form of Fig. 2. Wherein dark current equals gross area AT and JbkProduct, and photoelectric current ILFor the effective area of shining light A of batteryEWith JLProduct, junction voltage is at this moment not equal to the terminal voltage of load, as seen from the figure
(formula 1)
Because Rs is caused by the series connection of a series of resistance in solar modules, here just its sub-fraction relating to is busbar resistance R c and terminal box connection resistance Rj, theoretical supposition design like this can reduce Rc and Rj, reduced Rs, IRs item reduces, Vj increases, i.e. internal resistance reduces to show as power output and increases.
Project organization of the present invention is compared with existing structure, and the internal resistance of solar cell module can reduce 0.015ohm, and power can increase 2W, has outstanding beneficial effect, for the development of solar cell is laid a good foundation, simultaneously of the present invention simple in structure, easily realizes.
Brief description of the drawings
Fig. 1 the present invention does not consider series and parallel compensated resistance pn homojunction solar cell equivalent circuit structure schematic diagram.
Fig. 2 the present invention considers series and parallel compensated resistance pn homojunction solar cell equivalent circuit structure schematic diagram.
The array structural representation of Fig. 3 embodiment of the present invention.
The solar module inside of Fig. 4 embodiment of the present invention arranges a kind of array structural representation of bypass diode.
A kind of solar cell modular structure schematic diagram that the positive exit of Fig. 5 embodiment of the present invention, negative exit, diode exit are drawn.
A kind of solar cell modular structure schematic diagram of Fig. 6 embodiment of the present invention.
The another kind of solar cell modular structure schematic diagram of Fig. 7 embodiment of the present invention.
The structural representation that three solar cell modules of Fig. 8 embodiment of the present invention connect.
The internal structure schematic diagram of a kind of positive terminal box of Fig. 9 embodiment of the present invention.
The internal structure schematic diagram of a kind of diode terminal box of Figure 10 embodiment of the present invention.
The existing array structural representation of Figure 11.
The existing a kind of solar cell modular structure schematic diagram of Figure 12.
Detailed description of the invention
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated. Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Herein, same reference numerals represents same composition part. And, in this article, term " on ", the directional terminology such as D score, " left side ", " right side " is respectively the term in the orientation based in diagram, it may be not identical with actual installation situation, is not limited to scope of the present invention.
Embodiment
This example describes solar cell module in detail.
Solar cell module comprises that battery component, packaged battery assembly are positioned at frame, electrode connection box and the diode terminal box 8 on battery component week edge.
Solar module of the present invention comprises the backsheet layer, adhesive layer, array, adhesive layer and the glass plate that set gradually, is prepared by lamination after their stacked laying; Array is connected and/or is composed in parallel by some solar battery sheets, the present embodiment is specifically all composed in series solar battery array and describes in detail as example to be arranged as solar battery sheet that 10 row 6 are listed as, first 10 solar battery sheets are serially connected in to row by conductive strips such as weldings as shown in Figure 3, then on adhesive layer, arrange 6 row, then by the 6 row composition solar battery array that is together in series.
Glass plate is selected low iron ultra-clear glasses, and backsheet layer can be by solidifying to form after back veneer material lamination, adopts techniques well known to realize, such as the TPT backboard that adopts E.I.Du Pont Company to produce. Backboard for the protection of the back side of battery in order to avoid be subject to the impact of external environment. Backsheet layer generally has following characteristic: high pressure resistant and have high insulating property, weatherability is good, and anti-UV ultraviolet ray ageing is shockproof and can effectively protect cell piece fracture. Because it is conventionally known to one of skill in the art, therefore seldom describe. Backsheet layer also can be glass plate, can make like this solar module of transparent two sides.
The effect of adhesive layer is rigid solar array row and bypass diode, and be bonded between backsheet layer and glass plate, material can be traditional epoxy resin, polyurethane and silicon rubber etc., also can be EVA(plastic of poly vinyl acetate), can in EVA, add various known additives simultaneously, the effect that binding agent needs is to present transparent effect after solidifying, and light transmission is good.
Welding the present invention be not particularly limited, and can be copper strips, and the length of welding is 235mm, and wide is 1.5mm, and thick is 0.2mm.
The size of solar battery sheet as required can designed, designed, the solar cell length of a film adopting in this example is 156mm, wide is 156mm, thick is 0.2mm, solar battery sheet can be monocrystalline silicon, polysilicon or non-crystal silicon solar cell, the concrete principle of solar battery sheet and be configured to conventionally known to one of skill in the artly, therefore seldom describes.
Backsheet layer, adhesive layer, array, adhesive layer, glass plate are after laminating machine laminating, become a tabular assembly, frame is provided with the groove that solar module is installed, this groove coordinates the week edge that is contained in described tabular assembly, and after installing, there is a space at the sidewall of frame and the solar module back side, control circuit, apparatus for storing electrical energy etc. also can be arranged in this space, because it is conventionally known to one of skill in the art, therefore seldom describe.
On array, be electrically connected with the electrode leads to client for extracted current that extends battery component, electrode leads to client comprises positive exit 1 and negative exit 2, positive exit 1 and negative exit 2 extend battery component for drawing positive current and negative current, extended mode the present invention is not particularly limited, for example can from draw at edge, encapsulate again the frame on all edges or draw from frame, the present invention is for saving easy to connect space and further reduce the length of busbar, preferably passes from backsheet layer. for example can be at backsheet layer, on adhesive layer, cut or design the hole for passing positive exit and negative exit, shell tool on the array back side, the present embodiment can be that left hand edge or right hand edge 75mm place open a 20mm gap with distance limit on the adhesive layer contacting with backsheet layer on backsheet layer, and while laying, between the adhesive layer of opening, add therewith the pad 11 of a 100*30mmEVA and 90*30mmTPT at the array back side, with the 85mm gap of intermediate open position at minor face, and while laying, between the adhesive layer of opening, add therewith the pad 11 of a 100*670mmEVA and 90*660mmTPT at the array back side, pass after this opening until positive exit 1 and negative exit 2, again by this opening sealing, at solar module and positive exit 1, between negative exit 2, insulated enclosure thing is set and makes solar module insulated enclosure. this opening be smeared or be filled to insulated enclosure thing can, for filling glue,, can be also silica gel adhesive plaster, directly twines and be attached to positive exit 1, negative 2 surfaces of exit and open circumferential surface.
The present embodiment is specifically taking electrode connection box as positive terminal box 6, positive exit 1 is electrically connected and draws positive current with positive terminal box 6, in diode terminal box 8, be also provided with electric current lead division, negative exit 2 is electrically connected with diode terminal box 8 and draws negative current is that example describes in detail. Now positive exit 1, negative exit 2 are inconsistent from the extended position of battery component, positive exit 1 welds positive pole and draws welding, negative exit 2 welds negative pole and draws welding, the extraction location that positive and negative electrode is drawn welding is different, generally along with the number of the cell piece of connecting is more, the distance that positive and negative electrode is drawn between welding will be far away, generally be positioned at the two edges of solar battery array, as shown in Figure 3, positive and negative electrode is drawn welding and is positioned at the left and right edges of solar battery array, can be 65-85mm from the distance of left and right edges. Positive exit 1, negative exit 2 are drawn welding with the positive and negative electrode on the row of array or the two edges cell piece of row respectively and are electrically connected, if being positive pole, the welding of drawing on first row cell piece as shown in Figure 3 draws welding, the welding of drawing on last row cell piece is that negative pole is drawn welding, draw on welding and weld positive exit 1 at the positive pole of the nethermost battery of first row, in the end the negative pole of a nethermost battery of row is drawn the negative exit 2 of welding on welding. For reducing the length of electrode leads to client, reduce the internal resistance of solar cell module, positive exit 1 or negative exit 2 can be passed from approaching most backsheet layer with it, directly connecting electrode terminal box, with beeline extracted current. The present embodiment is specially, after passing from solar cell module back veneer leafing right hand edge 75mm, positive exit 1 is electrically connected with the positive terminal box 6 arranging herein, negative exit 2 is electrically connected with the diode terminal box 8 arranging herein from about centre position of solar cell module back veneer layer lower limb passes, as accompanying drawing 3.
Positive exit 1, negative exit 2 can be from one end extracted currents of solar module, and as shown in accompanying drawing 5,6, all from the below extracted current of solar module, positive exit 1 is positioned at left hand edge place, and negative exit 2 is positioned at the centre position of below. Also can be from the multiterminal extracted current of solar module, be two ends extracted current as shown in Figure 7, respectively from the above and below extracted current of solar module, positive exit 1 is positioned at left hand edge place, top, negative exit 2 is positioned at the centre position of below, be conducive to the connection in series-parallel assembling between solar module, long and more loaded down with trivial details cable need not be set, the risk that reduces costs and be short-circuited and open circuit. Adopt technical scheme of the present invention can simply realize this structure, and longer busbar need not be set, reduce the internal resistance of cell. Can connect cell piece and positive and negative exit 1,2 according to design. Solar module of the present invention can be understood as and contains four ends, and as shown in Figure 3, upper and lower, left and right are respectively one end.
Position the present invention of electrode connection box and diode terminal box 8 is also not particularly limited, and is preferably all positioned at backsheet layer surface, not only saves space, and do not affect sensitive surface be subject to light rate. Can be for a variety of with the mode being electrically connected of electrode leads to client, diode exit, the present invention specifically accesses positive terminal box 6 with positive exit 1, and negative exit 2 accesses diode terminal box 8 and describes in detail for example.
Connection can adopt the modes such as welding, for shorten the length of busbar and reduce connect difficulty, to the connective stability of parts. Preferably positive terminal box 6 is positioned at positive exit 1 backsheet layer and passes place. The present embodiment specifically describes in detail as an example of accompanying drawing 5 example, and positive terminal box 6 is positioned at the left hand edge place of the lower end on the backsheet layer surface of one end of solar module extracted current. Positive terminal box 6 is preferably 65-85mm with the distance of solar module left hand edge, and the present embodiment is specially 75mm, does not limit with distance the present invention of solar module lower limb, and it is that example describes in detail that the present embodiment is specially 60mm.
On array, be parallel with the bypass diode 5 of protection solar battery sheet. Number the present invention of bypass diode 5 is not particularly limited, bypass diode 5 can be arranged in diode terminal box 8, in the time containing multiple bypass diode 5, even can be arranged in these two terminal boxes of diode terminal box 8 and electrode connection box, also can there is part bypass diode 5 to be positioned at solar module, be packaged between backsheet layer and glass plate, can design connection according to actual conditions. On array, be electrically connected with the diode exit 3 that extends battery component, by diode exit 3, bypass diode 5 and array be connected in parallel; Extended mode the present invention is not particularly limited, for example, can from draw at edge, encapsulate the frame on all edges again or draw from frame, and the present invention is for saving easy to connect space and further reduce the length of busbar, preferably passes from backsheet layer. For example can on backsheet layer, adhesive layer, cut or design the hole for passing diode exit 3, between adhesive layer under backsheet layer and the array back side, be positioned at the position pad Upper gasket 11 in hole, diode exit 3 can pass from electrode leads to client backsheet layer, draw diode exit 3 on solar cell module back veneer layer surface, connect bypass diode 5.
The radical of diode exit 3 designs according to the number of the bypass diode 5 of solar battery array and connection, the present embodiment is (as accompanying drawing 3, 5) specifically to connect three bypass diodes 5 and need to design four diode exits 3 and describe in detail as example, bypass diode 5 outside solar module is encapsulated in diode terminal box 8, diode exit 3 passes about centre position of solar cell module back veneer layer below together with negative exit 2, it is 85-90mm gap that a length is scratched in the position that is 60mm from the distance of lower limb, at diode exit 3, silica gel is smeared between negative exit 2 and osculum and osculum surface, insulated enclosure. wherein, negative exit 2 accesses in diode terminal box 8, can be connected with the bypass diode 5 in diode terminal box 8, play the effect of a diode exit 3, can save a diode exit 3, for the present embodiment, adopt a negative exit 2 to replace the effect of a diode exit 3, actual only need adopts three diode exits 3 to access diode terminal box 8, as Fig. 5,6. with should electrode connection box during for negative terminal box 7, in access diode terminal box 8 be positive exit 1 time, also can design with reference to this. for the structure of the present embodiment, in the time that positive exit 1 contains many, even can by part, from diode terminal box 8, the positive exit 1 close to accesses in diode terminal box 8, now also can save the diode exit 3 of the quantity such as the positive exit 1 of access, can certainly be in positive terminal box 6 access from positive terminal box 6 the diode exit close to, the more corresponding bypass diode 5 that quantity are set in positive terminal box 6.
The radical of general diode exit is more, connect more complicated, preferably diode terminal box is positioned at about centre position of solar module one end, for the solar module of the present embodiment, the distance at one edge of the solar module at diode terminal box ionization electrode terminal box place can be 480-500mm, from the long limit of solar module or minor face about centre of being generally minor face draw diode terminal box, for the extraction location of a terminal box of routine, facilitate the laying of bypass diode and the design of diode exit to draw, make diode exit in the setting of diode terminal box bilateral symmetry, prevent the winding of diode exit, prevent short circuit, connect and be simple and easy to realize. the present embodiment is specially about centre position of solar cell module back veneer layer below, is 496mm from the distance of left hand edge, does not limit from the distance of lower limb, and the present embodiment is specially 60mm.
Bypass diode 5 is electrically connected with array by the welding on solar battery sheet with array, the array of the present embodiment can be composed in series by the capable m row of a n solar battery sheet, n solar battery sheet in row is connected in series and forms series connection row 4, and every two series connection row are all parallel with the bypass diode of a sheet. the present embodiment is specifically with n=10, m=6 is that example describes in detail, each solar battery sheet is arranged as shown in Figure 3, the present embodiment is specifically all composed in series solar battery array and describes in detail as example to be arranged as solar battery sheet that 10 row 6 are listed as, first 10 solar battery sheets are serially connected in to row by conductive strips such as weldings as shown in Figure 3, as first row s11, s21, s31, s41s101 series connection forms the first series connection row, secondary series s12, s22, s32, s42s102 series connection forms the second series connection row, the 3rd row s13, s23, s33, s43s103 series connection forms the 3rd series connection row, by that analogy, then on adhesive layer, arrange 6 row, composition solar battery array is again together in series 6 row. as shown in Figure 4, list one first bypass diode D1 in parallel in first and second series connection, list one second bypass diode D2 in parallel in third and fourth series connection, list one the 3rd bypass diode D3 in parallel in the 5th, six series connection, adopt this circuit connecting mode to connect the first bypass diode D1, the second bypass diode D2 and the 3rd bypass diode D3.
D1, D2, D3 can partly or entirely be arranged in diode terminal box 8, and the present embodiment is specifically by D1, D2, D3 is all placed in diode terminal box 8, can realize by elongated portion diode exit 3. Bypass diode 5 plays the effect of protection solar cell module; in the time selecting the solar battery array of 60 cell piece compositions that are listed as with 10 row 6 of the present embodiment; can select three bypass diodes 5; three 5 of bypass diodes are one another in series; the rated current of bypass diode 5 can be more than 15A; in the time that the quantity of cell piece increases; the rated current that can adjust bypass diode 5 realizes protection; in the time that series connection row increase, also can increase bypass diode 5, increase the radical of diode exit 3 simultaneously.
Electrode connection box of the present invention is used for drawing solar cell electric current, as electrode leads to client, its outer surface is provided with the load connecting portion 62 of the cable 9 for connecting load as shown in Figure 9, load connecting portion 62 can adopt and well known to a person skilled in the art various connecting portions, for example with the supporting bolt of cable etc., only need arrange one. Wherein can be provided for eliminating the bypass diode 5 of cell piece hot spot effect simultaneously. The present invention describes in detail as an example of the simplest positive terminal box 6 example, and if accompanying drawing 9 is the structural representation of the necessary parts in inside of positive terminal box 6, positive terminal box 6 comprises box body, is positioned at the positive exit access port of cartridge outer surface; Be positioned at cartridge outer surface for connecting the load connecting portion 62 of cable of load; Be arranged in box for connecting the first buckle 61 or first welding rod of positive exit, positive exit 1 snaps in the first buckle 61 through the positive exit access port of cartridge outer surface or welds with the first welding rod, realize the fixing and electrical connection of positive exit 1 in box body, the first buckle 61 or the first welding rod and load connecting portion 62 are to conduct, conducting can be by well known to a person skilled in the art the various modes that conduct, for example pass through sheet metal, load connecting portion 62 is generally metal parts, can directly be connected with outside, outside can coated high molecular insulated with material. In the time containing bypass diode 5 in positive terminal box 6, positive terminal box 6 also comprises the bypass diode 5 that is arranged in box; Be positioned at the diode exit access port of cartridge outer surface, diode exit access port can have multiplely also can be 1; And be arranged in box for connecting the second buckle or second welding rod of diode exit, the second buckle or the second welding rod and bypass diode conduct, by snapping in the second buckle or welding the second welding rod is realized being connected of bypass diode 5 and array, other structures the present invention of positive terminal box 6 is not particularly limited, design as required, the present invention does not repeat at this.
As the structural representation of the accompanying drawing 10 the simplest diode terminal box 8 that is the present embodiment, diode terminal box 8 comprises box body, be positioned at one or more diode exit access ports of box surface, be arranged in box for connecting multiple the second buckles or the second welding rod and the bypass diode 5 etc. of diode exit 3, by snapping in the second buckle or welding the second welding rod is realized being connected of bypass diode 5 and array, other structures the present invention in diode terminal box 8 is not particularly limited, design as required, for example heat radiation etc., the present invention does not repeat at this. in the present embodiment, diode terminal box 8 also can comprise the negative exit access port that is positioned at cartridge outer surface, and negative exit access port and diode exit access port can be same hole, can be also independent holes, design according to actual conditions. be positioned at cartridge outer surface for connecting the load connecting portion 62 of cable of load, be arranged in box for connecting the first buckle 61 or first welding rod of negative exit 2, negative exit 2 snaps in the first buckle 61 through the negative exit access port of cartridge outer surface or welds with the first welding rod, realize the fixing and electrical connection of negative exit 2 in box body, the first buckle 61 or the first welding rod and load connecting portion 62 are to conduct, conducting can be by well known to a person skilled in the art the various modes that conduct, for example pass through sheet metal, load connecting portion 62 is generally metal parts, can directly be connected with outside, outside can coated high molecular insulated with material.
General because terminal box is electric current assembles, may exist electric current large, the phenomenon of heating, can in electrode connection box and diode terminal box 8, some thermal components be set, such as fin etc., are positioned at the bottom of box body, also can offer louvre at box body periphery surface. It can be conventional cell material that material the present invention of the box body of electrode connection box and diode terminal box 8 is not particularly limited, such as macromolecular material etc., shape the present invention of box body is also not particularly limited, can be square etc., in box body, also can contain other for screw of being connected and fixed etc., also can contain other functional parts that strengthen terminal box function etc., the present invention is not particularly limited, only introduce in detail the necessary parts that are connected with the present invention herein, in electrode connection box of the present invention, bypass diode etc. can be set, simple in structure. Positive exit 1, negative exit 2 can be drawn respectively from two terminal boxes, draw aspect, easy to operate, avoid short circuit, misconnection risk simultaneously, improve the security of battery.
Shape, material and width, thickness the present invention of positive exit 1, negative exit 2 and diode exit 3 are not particularly limited, it can be for example the lead-out tablet of multistage composition, material can be selected copper strips etc., preferably, the positive length of exit 1 or the length of negative exit 2 are 200-250mm, diode exit 3 length can be for designing according to demand. Specifically just the length of exit 1 is 204mm in the present embodiment, and the length of negative exit 2 is 514mm, and the length of four diode exits 3 is respectively two 514mm and two 367mm.
The connection of positive terminal box 6 and diode terminal box 8 and backsheet layer can adopt and well known to a person skilled in the art various connections, for example gluing. Can design the shape of frame, make the sidewall of frame and the solar module back side have the space of placing positive terminal box 6 and diode terminal box 8, improve space availability ratio.
Prepare in the following method the solar cell module of the present embodiment,
Press shown in Fig. 3, after backsheet layer, apart from left hand edge 75mm, positive exit 1 is set near the place of left hand edge, the specification of positive exit 1 is 204*6*0.2mm, draws from the opening of backboard and EVA, notes aperture position (apart from edge 75mm) and the size (20mm) of backboard and EVA when laying. diode exit 3 is set in the middle of lower edge and draws negative exit 2. the place of each opening adds Upper gasket 11, newly-increased pad 11 specifications are, EVA100*30mm, TPT90*30mm, often scale group technique (single weldering again, series welding, lay, lamination, chamfered edge, clean) prepare module and make 4PCS solar modules, be numbered 001, 002, 003, 004, wherein 003 module has carried out group frame and has been connected terminal box step, it is positive exit 1, negative exit 2 connects respectively positive terminal box 6 and diode terminal box 8(Fig. 5, 6), diode exit 3 accesses diode terminal box 8(Fig. 6), for the uniformity of guarantee test with reduce otherness, all contrast tests are all to carry out on same assembly.
Performance test
The both positive and negative polarity of power measuring is received respectively to positive exit 1, negative exit 2 and diode exit 3 places, the difference of contrast test power, contrast herein can divide two groups, work to carry out, group one: all do not connect terminal box, directly the lead-in wire of power measuring is linked to measured power on busbar; Group two: all connect short-term terminal box (J.B.) (resistance is 3.5mohm), then the lead-in wire of power measuring is connected to measured power in short-term terminal box, respectively 4PCS assembly is tested, data are as table 1,2.
Table 1
Table 2
The power ratio that power measuring connects positive exit 1, the 2 places test of negative exit connects the slightly high 1W of being approximately of diode exit 3 place's measured power, Rs has also approximately reduced 0.007ohm, be that positive exit 1, negative exit 2 resistance R c show as 0.007ohm in solar modules, power output increases 0.7W.
At diode exit, 3 places connect terminal box, connect respectively the terminal box of the different wiring length of same producer same model, carrying out before power test, the resistance of first having tested long line terminal box and short-term terminal box is respectively: 11.5mohm, 3.5mohm, shorten wiring length after resistance R j reduced 8mohm. 001,002,004 these three modules are tested, and data are as table 3,4.
Table 3
Table 4
Connection resistance Rj shows as 3.8mohm, and the impact of power output is increased to power greatly about 0.7W left and right for reducing Rj3.8mohm. In solar power station, general impacts meeting is very obvious.
At the positive negative exit of exit 1, place connects short-term terminal box (resistance is 3.5mohm), connect normal long line terminal box at diode exit 3, negative exit 2 places, distinguish measured power again, can test 001,002,004 these three modules, data are as table 5,6.
Table 5
Table 6
The comprehensive resistance of positive and negative exit and terminal box wiring shows as Rs to the impact of power output and reduces 0.01ohm, reduces Rj+Rc and increases power output 1.1W. In solar power station
By after three battery modules series connection (as Fig. 8), the length of each electrode connection box cable can shorten as 220mm. According to three series connection of the solar cell module of the prior art of accompanying drawing (as Figure 12), more than the length of its every series connection cable is necessary for 1000mm.
Claims (24)
1. a solar cell module, is characterized in that, comprises that battery component, packaged battery assembly are positioned atFrame, the first terminal box and second terminal box on all edges of battery component;
Described battery component comprise the backsheet layer that sets gradually, adhesive layer, array, adhesive layer andGlass plate, described array is connected and/or is composed in parallel by some solar battery sheets, described arrayOn be electrically connected with the electrode leads to client for extracted current that extends battery component;
On described array, be also connected in parallel to the bypass diode of protection solar battery sheet, described bypassDiode is arranged in the first terminal box or is arranged in the first terminal box and the second terminal box;
On described array, be electrically connected with the diode exit that extends battery component, described bypass two utmost pointsPipe is connected in parallel by diode exit and array;
Electrode leads to client is electrically connected with the second terminal box at least partly;
Described diode exit is electrically connected with the first terminal box or diode exit and the first terminal box andTwo terminal box electrical connections;
Described the first terminal box is diode terminal box; Described the second terminal box is electrode connection box, described electricityUtmost point exit comprises positive exit and negative exit, and described positive exit is electrically connected with electrode connection box and/or is negativeExit is electrically connected with electrode connection box.
2. solar cell module according to claim 1, is characterized in that, described electrode connection boxFor positive terminal box, described positive exit is electrically connected with positive terminal box; Described negative exit and diode terminal boxElectrical connection.
3. solar cell module according to claim 1, is characterized in that, described electrode connection boxFor negative terminal box, described negative exit is electrically connected with negative terminal box; Described positive exit and diode terminal boxElectrical connection.
4. solar cell module according to claim 1, is characterized in that, described bypass diodeBe arranged in diode terminal box, described diode exit is electrically connected with diode terminal box.
5. solar cell module according to claim 1, is characterized in that, described electrode leads to clientBe electrically connected with array by the conductive strips of drawing on solar battery sheet, described diode exit passes throughThe conductive strips of drawing on solar battery sheet are electrically connected with array.
6. solar cell module according to claim 1, is characterized in that, described electrode leads to clientAnd diode exit passes from backsheet layer respectively, described the first terminal box is positioned at backsheet layer surface, describedTwo terminal boxes are positioned at backsheet layer surface.
7. solar cell module according to claim 6, is characterized in that, described electrode leads to clientBe electrically connected described at least part of electrode with the conductive strips on the row of array or the two edges cell piece of rowExit passes from the backsheet layer position of the junction that is electrically connected with conductive strips, and described the second terminal box is positioned at electricityUtmost point exit backsheet layer passes place.
8. solar cell module according to claim 7, is characterized in that, described electrode leads to clientComprise positive exit and negative exit, described the second terminal box is positive terminal box, described positive exit from leadThe backsheet layer position of the junction of electricity band electrical connection passes, and described positive terminal box is positioned at positive exit backsheet layer and wearsSource.
9. solar cell module according to claim 7, is characterized in that, described electrode leads to clientComprise positive exit and negative exit, described the second terminal box is negative terminal box, described negative exit from leadThe backsheet layer position of the junction of electricity band electrical connection passes, and described negative terminal box is positioned at negative exit backsheet layer and wearsSource.
10. solar cell module according to claim 6, is characterized in that, described electrode connectionBox is positioned at the backsheet layer surface at an edge of solar module.
11. solar cell modules according to claim 10, is characterized in that described electrode connectionBox is 65～85mm from the distance at a described edge of solar module.
12. solar cell modules according to claim 10, is characterized in that, described the first wiringBox is diode terminal box, and described diode terminal box is solar cell module from the distance at a described edgeWide 1/3～1/2 or be solar cell module length 1/3～1/2.
13. solar cell modules according to claim 6, is characterized in that, described the first wiringBox and the second terminal box are all positioned at the backsheet layer surface of solar module one end.
14. solar cell modules according to claim 6, is characterized in that, described the first wiringBox and the second terminal box lay respectively at the backsheet layer surface of solar module upper and lower end parts or left and right end portions.
15. solar cell modules according to claim 6, is characterized in that, on described backsheet layerBe provided with the hole for passing electrode leads to client and diode exit, the adhesive layer contacting with backsheet layer and electricityThe position that is positioned at hole between the array surface of pond is provided with pad.
16. solar cell modules according to claim 6, is characterized in that, described electrode is drawnBetween end, diode exit and solar module, be equipped with the sealing of insulated enclosure thing.
17. solar cell modules according to claim 1, is characterized in that described arrayBe composed in series by the capable m row of a n solar battery sheet, n solar battery sheet in row is connected in seriesForm series connection row, every two series connection row are parallel with a bypass diode.
18. solar cell modules according to claim 1, is characterized in that, described bypass two utmost pointsPipe comprises at least two, between described bypass diode, is one another in series.
19. solar cell modules according to claim 1, is characterized in that, connect the second wiringThe length of the electrode leads to client of box is 200～250mm.
20. solar cell modules according to claim 1, is characterized in that, described the second wiringBox comprises box body;
Be positioned at the electrode leads to client access port of cartridge outer surface;
Be positioned at cartridge outer surface for connecting the load connecting portion of cable of load;
Be arranged in the first buckle for connecting electrode exit or first welding rod of box, described the first buckle orThe first welding rod and load connecting portion conduct.
21. solar cell modules according to claim 20, is characterized in that, described the second wiringBox also comprises the bypass diode that is arranged in box;
Be positioned at the diode exit access port of cartridge outer surface;
Be arranged in box for connecting the second buckle or second welding rod of diode exit, the second buckle orTwo welding rods and bypass diode conduct.
22. solar cell modules according to claim 20, is characterized in that, described electrode is drawnEnd snaps in the first buckle or welds with the first welding rod; In described the second terminal box, also contain and be useful on the loose of heat radiationThermal part, is positioned at box body.
23. solar cell modules according to claim 1, is characterized in that, described the first wiringBox comprises box body;
Be positioned at the diode exit access port of cartridge outer surface;
Be arranged in box for connecting the second buckle or second welding rod of diode exit, the second buckle orTwo welding rods and bypass diode conduct.
24. solar cell modules according to claim 23, is characterized in that, described the first wiringBox comprises the electrode leads to client access port that is positioned at cartridge outer surface;
Be positioned at cartridge outer surface for connecting the load connecting portion of cable of load;
Be arranged in the first buckle for connecting electrode exit or first welding rod of box, described the first buckle orThe first welding rod and load connecting portion conduct.
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| CN201210086064.9A CN103208546B (en) | 2012-01-13 | 2012-03-28 | A kind of solar cell module |
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| CN201210011213 | 2012-01-13 | ||
| CN201210011213.5 | 2012-01-13 | ||
| CN2012100112135 | 2012-01-13 | ||
| CN201210086064.9A CN103208546B (en) | 2012-01-13 | 2012-03-28 | A kind of solar cell module |
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| CN103208546B true CN103208546B (en) | 2016-05-11 |
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| CN201210086064.9A Active CN103208546B (en) | 2012-01-13 | 2012-03-28 | A kind of solar cell module |
| CN2012201225348U Expired - Lifetime CN202549853U (en) | 2012-01-13 | 2012-03-28 | Solar battery module |
| CN2012100860668A Pending CN103208547A (en) | 2012-01-13 | 2012-03-28 | Solar cell module |
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| CN102931241B (en) * | 2012-11-26 | 2015-11-11 | 晶科能源有限公司 | A kind of crystalline silicon component |
| CN103094381A (en) * | 2012-12-13 | 2013-05-08 | 常州天合光能有限公司 | Solar battery assembly |
| CN103066144B (en) * | 2012-12-25 | 2015-06-10 | 英利能源（中国）有限公司 | Solar cell module and novel leading wire mode thereof |
| CN103545391A (en) * | 2013-11-07 | 2014-01-29 | 中利腾晖光伏科技有限公司 | Hidden-crack-preventing double-glass module |
| CN104701402B (en) * | 2013-12-09 | 2017-10-10 | 聚日（苏州）科技有限公司 | A kind of serial solar energy battery and forming method thereof |
| US20150326177A1 (en) * | 2014-05-06 | 2015-11-12 | Integrated Solar Technology, LLC | Integrated Wire Management for Roof-Integrated Solar Panels |
| CN105576057B (en) * | 2014-10-31 | 2018-06-26 | 比亚迪股份有限公司 | Solar cell module and preparation method thereof |
| CN106611801A (en) * | 2015-10-21 | 2017-05-03 | 英属开曼群岛商精曜有限公司 | Solar cell module |
| TWI584575B (en) * | 2015-10-22 | 2017-05-21 | 上銀光電股份有限公司 | Solar panel apparatus |
| CN105305955A (en) * | 2015-11-09 | 2016-02-03 | 张家港其辰光伏科技有限公司 | Solar cell module and solar power generation system |
| CN107104156B (en) * | 2016-02-18 | 2020-09-04 | 珠海格力电器股份有限公司 | Photovoltaic module with self-cleaning function |
| CN106785856A (en) * | 2016-11-25 | 2017-05-31 | 中国人民解放军装备学院 | Laser delivery of energy opto-electronic conversion synergisting method based on photovoltaic cell arrays circuit optimization |
| CN108599716A (en) * | 2018-06-26 | 2018-09-28 | 浙江晶科能源有限公司 | A kind of photovoltaic junction box |
| CN108631724A (en) * | 2018-06-26 | 2018-10-09 | 浙江晶科能源有限公司 | A kind of photovoltaic module |
| CN109841699A (en) * | 2019-04-02 | 2019-06-04 | 晶澳（扬州）太阳能科技有限公司 | Back contact solar cell group string and preparation method thereof, component |
| CN112564621B (en) * | 2020-12-14 | 2022-03-08 | 泰州隆基乐叶光伏科技有限公司 | Photovoltaic module production method and system |
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| CN202049982U (en) * | 2011-05-17 | 2011-11-23 | 碧辟普瑞太阳能有限公司 | Solar photovoltaic assembly with parallel type battery cell strings |
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| CN102024865B (en) * | 2009-09-23 | 2012-06-20 | 江苏尚昆光伏科技有限公司 | Connection method of solar photovoltaic module battery plate |
| CN201699031U (en) * | 2010-04-20 | 2011-01-05 | 泰科电子(上海)有限公司 | Solar photovoltaic component |
| CN102315303A (en) * | 2011-09-29 | 2012-01-11 | 江苏石光光伏有限公司 | High-power solar assembly with dual junction boxes and production method thereof |
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| CN202058742U (en) * | 2010-08-30 | 2011-11-30 | 冯秀华 | Solar photovoltaic component |
| CN202049982U (en) * | 2011-05-17 | 2011-11-23 | 碧辟普瑞太阳能有限公司 | Solar photovoltaic assembly with parallel type battery cell strings |
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| CN103208545B (en) | 2016-08-03 |
| CN103208547A (en) | 2013-07-17 |
| CN202549853U (en) | 2012-11-21 |
| CN103208546A (en) | 2013-07-17 |
| CN103208545A (en) | 2013-07-17 |
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