CN201859877U - Solar battery component - Google Patents
Solar battery component Download PDFInfo
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- CN201859877U CN201859877U CN201020262258.6U CN201020262258U CN201859877U CN 201859877 U CN201859877 U CN 201859877U CN 201020262258 U CN201020262258 U CN 201020262258U CN 201859877 U CN201859877 U CN 201859877U
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- solar cell
- cell module
- bus bar
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- solar
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- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 5
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Images
Classifications
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
Abstract
The utility model provides a solar battery component, which belongs to the field of photovoltaic technology. The solar battery component comprises a solar battery pack string, a sealing bonding layer for sealing the solar battery pack string, a front side light transmittance base plate and a back side armor plate glass, the front side light transmittance base plate, the back side armor plate glass, a bypass diode connected with the solar battery pack string, and a power cable junction box, wherein the area of the back side armor plate glass is smaller than that of the front side light transmittance base plate, so that a dislocation zone is formed on the front side light transmittance base plate at one or more edges; and the bypass diode is fixedly arranged on the dislocation zone of the front side light transmittance base plate. The solar battery component has the advantages of long service life, simple structure, relatively simple processing technology, high output power and low cost.
Description
Technical field
The utility model belongs to the photovoltaic technology field, relates to a kind of solar module, relates in particular to the solar module that a kind of back substrate adopts toughened glass.
Background technology
In view of the finiteness of conventional energy resource supply and the increase of environmental protection pressure, many in the world countries have started the upsurge of development and use solar energy and regenerative resource at present, solar utilization technique has obtained fast development, wherein utilizes utilization that semi-conductive photovoltaic effect changes solar energy into electric energy more and more widely.And solar cell is exactly that wherein general to be used to solar energy converting be the device of electric energy.In actual applications, generally be as basic applying unit with the solar module that forms by the series connection of a plurality of solar cells.
Figure 1 shows that the structural representation of the solar module of prior art.As shown in Figure 1, solar module 10 comprises the solar panel string 15 that is formed by connecting by the series connection of a plurality of solar cells, in order to sealing adhesive linkage 13, front light-transmitting substrate 11 and the back substrate 17 of sealing and protection solar panel string 15, wherein, sealing adhesive linkage 13 comprises positive face seal adhesive linkage 13a between solar panel string 15 and the front light-transmitting substrate 11 and the sealing backside adhesive linkage 13b between solar panel string 15 and the back substrate 17; " front " of substrate and the definition at " back side " define by the sunlight plane of incidence, and sunlight is mainly penetrated on solar panel string 15 from front light-transmitting substrate 11.Sealing adhesive linkage 13 adopts EVAc (ethylene vinyl acetate usually, EVA) material, front light-transmitting substrate 11 adopts toughened glass usually, back substrate 17 adopts TPT (polyvinyl fluoride composite membrane) material usually, and, back substrate 17 is designed to identical shape and size with front light-transmitting substrate 11, thereby the two has equal area.Be the mechanical strength of increase solar module 10 and the facility of installation, solar module 10 also generally includes the frame (not shown in figure 1), and it can or be a plastic frame for aluminum alloy frame.In addition; for realizing the interconnection between the different adjacent solar cell assemblies; can also comprise the terminal box (not shown in figure 1) that the back side is bonding by battery component 10 very much; terminal box generally includes bypass diode; terminal box can be used to protect bypass diode; bypass diode is in parallel with the some solar cell pieces in the solar panel string be used to prevent a certain solar battery cell from damaging or can not generate electricity owing to environmental problem the time, the excessive hot spot effect that causes of himself resistance, avoid assembly heating damage.Usually, draw the back substrate that long busbar passes assembly from the series connected battery sheet of assembly and be connected to terminal box,, need overleaf punching on the substrate 17 usually for drawing this busbar.In addition, for adjacent assembly is connected to each other, need draw long cable from terminal box.
The solar module of prior art shown in Figure 1 mainly contains following technical disadvantages:
First, back substrate 17 costs of TPT material are high and anti-water penetration is bad, and moisture is easily invaded in it and made the easy premature aging of sealing backside adhesive linkage 13b and make solar panel string 15 and metalwork wherein such as (not shown in figure 1)s such as electrode, interconnector easily are corroded; And the back substrate 17 of TPT material itself is easy to wear out, and it can aging become fragile in certain life span and lose defencive function; Therefore, above factor directly influences the life-span of solar module, and its life-span is generally 25 years.
The second, the bypass diode of assembly must be installed in the terminal box and with the busbar of drawing and be connected, and needs to consider the installation and the heat radiation of bypass diode in the terminal box, and the complex structure of terminal box, electric leakage have a big risk, the cost height.
The 3rd, for cooperating terminal box, need draw long busbar; For realizing the interconnection between the adjacent solar cell assembly, need draw long cable from terminal box; Particularly draw busbar, need punching on the back substrate 17, increase the technology difficulty of making greatly; And the series resistance that long busbar and cable have directly increased material cost and assembly has reduced the power output of assembly.
The 4th, need increase the mechanical strength of solar module with thick and heavy expensive aluminium alloy protecting border.
Therefore, existing solar cell assembly construction complexity, the life-span is short, cost is high, manufacture craft is loaded down with trivial details and power output is not high.
In view of this, be necessary to propose a kind of solar module of new structure.
The utility model content
The technical problems to be solved in the utility model is that the structure of simplifying solar module also effectively reduces its cost, improves its useful life.
For solving above technical problem, the utility model provides a kind of solar module, comprising:
The solar panel string;
The front light-transmitting substrate;
Back side armorplate glass;
Sealing adhesive linkage with described solar panel string and front light-transmitting substrate and the sealing of back side armorplate glass;
The bypass diode that connects with solar panel polyphone; And
The power line terminal box
Wherein, so that form folded difference zone on the light-transmitting substrate of the described front of one or more edges, described bypass diode is fixedly set on the folded poor zone on the light-transmitting substrate of described front the area of described back side armorplate glass less than the area of described front light-transmitting substrate.
Preferably, described solar module also comprises the frame ceiling that is nested in around the described solar module.
In an optimized technical scheme, described power line terminal box is the contiguous block that is arranged at the edge of described solar module.Wherein, described contiguous block is installed in the edge in described folded difference zone, and described folded poor zone is provided with busbar, and described contiguous block is provided with the busbar outlet; Described solar module also comprises the cable that is used for projected current, and described cable is fixedlyed connected with described busbar at the busbar outlet place of contiguous block.
Described contiguous block also is provided with the cable outlet, and the cable of fixedlying connected with described busbar is fixedly drawn from described cable outlet.
Also be provided with seal groove and capping on the described contiguous block.
Preferably, described solar module also is included in the set corner protection piece of edge that contiguous block is not set.
In another technical scheme of the present utility model, described power line terminal box is arranged on the side in the described folded difference of having of described solar module zone, described folded poor zone is provided with busbar, and described power line terminal box is provided with the busbar outlet; Described solar module also comprises the cable that is used for projected current, and described cable is fixedlyed connected with described busbar at the busbar outlet place of described terminal box.
Preferably, described sealing adhesive linkage is EVAc or polyvinyl butyral resin material.
Described sealing adhesive linkage comprises positive face seal adhesive linkage and sealing backside adhesive linkage, and preferably, described sealing backside adhesive linkage is the sealing adhesives of white.
Preferably, described front light-transmitting substrate adopts super white patterned toughened glass or ultrawhite float glass process toughened glass.
Preferably, apply white glazed colour layer on the armorplate glass of the described back side.
Preferably, described back side armorplate glass employing ordinary flat toughened glass material.
In an optimized technical scheme, described bypass diode is fixed on the described folded poor zone by adhesives.The busbar of described solar module is arranged on the described folded poor zone, and busbar and described bypass diode electrically connect.
Preferably, described bypass diode is with described busbar packed being fixed on the described folded poor zone when the battery component lamination encapsulates.
Preferably, described solar module is an oblong-shaped, and described folded poor zone is arranged on described rectangular broadside along last.
Technique effect of the present utility model is, the solar module employing back side armorplate glass that cost is low, ageing resistace is good of the present utility model is as substrate, and it is regional with the placement bypass diode to form folded difference by size design on the light-transmitting substrate of front, and busbar can be drawn from terminal box easily.Therefore, solar module of the present utility model has the following advantages: (1) anti-moisture entering can be good, and back substrate and inner sealing adhesives etc. are difficult for aging, so the life-span is long; (2) the power line junction box structure is simple, can realize with the form of contiguous block, thereby and the assembly mechanical strength is high can save the aluminium alloy protecting border, and therefore simple in structure; (3) do not need to draw busbar from the back substrate punching, the assembly processing technology is simple relatively; (4) can shorten the length of busbar and cable, effectively reduce series resistance, thereby make solar module power output height; (5) the establishment of component cost is low.
Description of drawings
Fig. 1 is the cross section structure schematic diagram of the solar module of prior art;
Fig. 2 is the structure schematic diagram of the solar module that provides according to the utility model embodiment;
Fig. 3 is the structural representation in the A-A cross section of solar module shown in Figure 2;
Fig. 4 is the structural representation in the B-B cross section of solar module shown in Figure 2;
Fig. 5 is the structural representation of contiguous block 222 shown in Figure 2;
Fig. 6 is the partial structurtes enlarged diagram after contiguous block 222 shown in Figure 5 is fixed on the solar module.
Embodiment
What introduce below is a plurality of some in may embodiment of the present utility model, aims to provide basic understanding of the present utility model, is not intended to confirm key of the present utility model or conclusive key element or limits claimed scope.In the accompanying drawings, for the sake of clarity, might amplify the thickness of layer or the area in zone, but should not be considered to the proportionate relationship that strictness has reflected physical dimension as schematic diagram.In the accompanying drawing, identical label refers to identical structure division, therefore will omit description of them.
Herein orientation terms such as the upper and lower, left and right of mentioning, centre define with respect to the orientation of the solar cell of anticipating shown in the accompanying drawing, they are relative notions, can correspondingly change according to different modes that solar module used, places.
The structure schematic diagram of the solar module that provides according to the utility model embodiment is provided.As shown in Figure 2, solar module 20 is designed to rectangular shape, and still, its concrete shape and size are not limited by the utility model embodiment, and those skilled in the art can select the shape and the size of solar module according to concrete actual needs.For ease of explanation, the right and left shown in Figure 2 be defined as the broadside of this solar module than minor face, the long limit on both sides up and down shown in Figure 2 is defined as the long limit of this solar module.Schematic diagram shown in Fig. 2 is the back side diagrammatic sketch of solar module 10, sunlight is not to inject the Semiconductor substrate from this face, in this utility model, " front " is defined as the plane of incidence of sunlight, and " back side " is meant the another side with positive " opposite ".
Figure 3 shows that the structural representation in the A-A cross section of solar module shown in Figure 2; Figure 4 shows that the structural representation in the B-B cross section of solar module shown in Figure 2.Structure below in conjunction with Fig. 2, Fig. 3 and the solar module 10 to this utility model embodiment shown in Figure 4 is elaborated.
Sealing adhesive linkage 23 is mainly used in protection solar panel string 25, and it can adhering and sealing solar panel string 25 and front light-transmitting substrate 21 and back side armorplate glass 27.Sealing adhesive linkage 23 comprises positive face seal adhesive linkage 23a between front light-transmitting substrate 21 and the solar panel string 25 and the sealing backside adhesive linkage 23b between back side armorplate glass 27 and the solar panel string 25.Sealing adhesive linkage 23 can be selected shock resistance and the better adhesive material of durability, for example, can select using plasma encapsulant, PVB (Polyvinylbutyral, polyvinyl butyral resin) material, EVA (Ethylene/vinyl acetate, EVAc) material etc.The concrete thickness of sealing adhesive linkage 23 is not limited by the utility model embodiment.For positive face seal adhesive linkage 23a, when selecting material, also should consider the light transmittance of material, to improve the conversion efficiency of solar module; For sealing backside adhesive linkage 23b, can adopt the sealing adhesives of white, to increase the conversion efficiency of reflection of light rate, raising solar module.
Front light-transmitting substrate 21 covers on the positive face seal adhesive linkage 23a, and in this embodiment, front light-transmitting substrate 21 also adopts the high toughened glass of intensity, for example, adopts ultrawhite toughened glass; Preferably, also can adopt super white patterned toughened glass, embossing toughened glass has texture, thereby can reduce surface diffuse reflectance, reduce light pollution and can increase by 0.5%～1% light transmittance when sunlight incident.But for reducing cost, can select to use does not have the ultrawhite of embossing float glass process toughened glass yet.In this embodiment, the light transmittance of front light-transmitting substrate 21 is generally more than 90%.
In this utility model, the back substrate of solar module 20 adopts back side armorplate glass 27, and than the back substrate of TPT material, back side armorplate glass 27 has remarkable advantages aspect anti-environment, the ageing-resistant performance, and the intensity height.In this embodiment, the long limit size of back side armorplate glass 27 less than the long limit size of front light-transmitting substrate 21, the area of its back side armorplate glass 27 is also less than the area of front light-transmitting substrate 21, thereby can on top form the folded difference zone 211 of front light-transmitting substrate 21 along place's (on broadside), in this utility model, " folded difference zone " is meant because the not corresponding zone that overlaps that area difference caused of back side armorplate glass 27 and front light-transmitting substrate 21.Dotted line among Fig. 2 is depicted as one of them limit (coated by the frame ceiling and can not see) of back side armorplate glass 27, and other limits of its folded difference zone 211 and assembly are surrounded by frame ceiling 29.The area size in folded difference zone 211 is not limited by the utility model embodiment, because it is used to place bypass diode 24, the area in folded difference zone 211 can be provided with according to the volume and the quantity of placement bypass diode 24.Preferably, folded difference regional 211 is about 5 millimeters to about 50 millimeters in the scope of the size W of long side direction.In addition, the position in folded difference zone 211 is not limited to a side of the broadside of the utility model embodiment, needs according to actual conditions, those skilled in the art can be provided with other position, edge that folded difference zone 211 is formed on the front light-transmitting substrate, for example, another broadside among Fig. 2 is along the position, or the position, long edge among Fig. 2.In addition, need to prove, in other cases, shape and position corresponding relation that also can be by design front light-transmitting substrate 21 and back side armorplate glass 27, be chosen in different edge along forming a plurality of folded differences zone simultaneously, for example, form folded difference zone along the position at two broadsides respectively simultaneously.
In addition, preferably,, can apply white glazed colour layer (not shown) on the back side armorplate glass 27 in order to increase reflecting rate.Back side armorplate glass 27 also can adopt ordinary flat toughened glass to reduce cost.
Folded poor regional 211 edge at front light-transmitting substrate 21 is provided with two contiguous blocks 222, and therefore it also can be called the power line contiguous block as the electric current exit of solar module.In this utility model, because bypass diode 24 is arranged on folded poor regional 211 on the front light-transmitting substrate 21, the power line terminal box can be simplified greatly, thereby in this embodiment, can realize the function of power line terminal box with the form of contiguous block 222.In this embodiment, in contiguous block 222 positions, the busbar on the folded difference zone 211 is fixedly welded on the cable 293 that is used for projected current.The concrete structure of contiguous block 222 and electric current lead-out mode will illustrate in Fig. 5 and Fig. 6.
Because back substrate adopts back side armorplate glass 27; improved the intensity of solar module greatly; and can protect the contiguous block 222 of corner pairing two edge being provided with of a broadside of solar module; in this embodiment; contiguous block 222 not only is used for projected current (function of power line terminal box); can also be used to protecting the corner of its position, prevent the fragmentation of its corner, place owing to slight impact.
In this embodiment; solar module also comprises the corner protection piece 224 that is arranged on pairing two edges of another broadside (edge of contiguous block 222 is not set); corner protection piece 224 only is used to protect the corner, prevents the fragmentation owing to slight impact of its corner, place.Therefore, in a lot of application scenarios, the solar module of this embodiment can no longer need be provided with the aluminium alloy protecting border around solar module.But, in this embodiment,, on the surrounding of solar module 20, frame ceiling 29 can be set for further improving the protection effect, its while can increase the sealing effectiveness of assembly, improves the quality of solar module better.The last lower edge that front light-transmitting substrate and back side armorplate glass are nested into frame ceiling 29 as shown in the figure together gets final product; by up and down than existing aluminium alloy protecting border; this frame ceiling 29 is simple in structure, and last lower edge is narrower, so materials cost and processing cost are also low.
Need to prove, when folded difference zone all is set on two broadsides of solar module, will all be provided with contiguous block 222 on four corners, no longer comprise corner protection piece 224 this moment, at this moment, the corner protection piece 224 among Fig. 2 is connected piece 222 and substitutes.
Figure 5 shows that the structural representation of contiguous block shown in Figure 2 222; Figure 6 shows that the partial structurtes enlarged diagram after contiguous block 222 shown in Figure 5 is fixed on the solar module.As shown in Figure 5 and Figure 6, in this embodiment, the matrix of contiguous block 222 is set to square, and the matrix below of contiguous block 222 is provided with nested mouthful 2228, and contiguous block 222 is wherein fixedly embedded with the corner of solar module by nested mouthful of 2228 correspondences.The matrix of contiguous block 222 is provided with busbar outlet 2222, busbar outlet 2222 is used for the corresponding busbar 242 that exposes on the folded difference zone 211, before the capping (not shown) sealing of contiguous block 222, cable can be fixedly welded on the busbar 242 from the busbar outlet.Also be provided with cable outlet 2226 on the matrix of contiguous block 222; and around matrix, open seal groove 2224; can fill the colloid that is used to seal in the seal groove 2224; after cable 293 and busbar are welded to connect; the capping (not shown) of contiguous block 222 is fixed on the matrix of contiguous block 222 by seal groove; thereby fixed cable 293 preferably, and made that the busbar of edge is sealed to protect preferably, improved the reliability of solar panel.Need to prove that among Fig. 6, contiguous block 222 is fixed on the corner of solar module but goes back the unsealing capping.As from the foregoing, this utility model has been utilized folded poor region design, does not need to draw busbar (the difficult and easy damaged glass of drilling technology on the armorplate glass) from 27 punchings of back side armorplate glass; And the length that can reduce the length of busbar and cable greatly realizes that electric current (for example draws, cable can be foreshortened to 0.2 meter to 0.3 meter scope by original 1 meter), reduce series resistance, improved the power output of solar module, but also reduced cost.
Above Fig. 5 and structure shown in Figure 6 have only illustrated the folded contiguous block 222 that differs from the left corner in zone 211 of the broadside of solar module shown in Figure 2, according to design symmetry, the contiguous block 222 of the right corner in the folded difference zone 211 on the broadside of solar module shown in Figure 2 also can adopt analog structure to draw the electric current of the other end, is not repeated at this.
Need to prove, Fig. 5 and embodiment illustrated in fig. 6 in, contiguous block 222 has substituted the function of the power line terminal box of solar module simultaneously.But, be to be understood that, solar module of the present utility model can also comprise independently power line terminal box, like this, the power line terminal box is arranged on the side in the folded difference of having of solar module zone 211 (also be embodiment illustrated in fig. 2 broadside on), be provided with the busbar outlet on the power line terminal box equally, the cable of solar module is fixedlyed connected with its busbar at the busbar outlet place of this power line terminal box.
Need to prove that among the OBL solar module embodiment shown in Figure 2, folded difference zone 211 is arranged on the broadside.Those skilled in the art will recognize that, 211 residing limits of correspondence, folded difference zone are not limited by the utility model embodiment, for example can also be arranged on the long limit folding difference zone 211, corresponding change also can be done in the position of bypass diode 24 and contiguous block 222.
Above example has mainly illustrated solar module of the present utility model, although only some of them execution mode of the present utility model is described, but those of ordinary skills should understand, and the utility model can be in not departing from its purport and scope be implemented with many other forms.Therefore, example of being showed and execution mode are regarded as illustrative and not restrictive, and under situation about not breaking away from as defined the utility model spirit of appended each claim and scope, the utility model may be contained various modifications and replacement.
Claims (17)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020262258.6U CN201859877U (en) | 2010-07-07 | 2010-07-07 | Solar battery component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020262258.6U CN201859877U (en) | 2010-07-07 | 2010-07-07 | Solar battery component |
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| CN201859877U true CN201859877U (en) | 2011-06-08 |
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| CN201020262258.6U Expired - Lifetime CN201859877U (en) | 2010-07-07 | 2010-07-07 | Solar battery component |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103681918A (en) * | 2013-12-20 | 2014-03-26 | 湖南共创光伏科技有限公司 | Film solar cell component and packaging method thereof |
| CN109065641A (en) * | 2013-12-09 | 2018-12-21 | 太阳能公司 | Manufacture solar battery emitter region is injected and covered using autoregistration |
| JP2020098931A (en) * | 2013-07-05 | 2020-06-25 | アールイーシー ソーラー プライベート リミテッド | Solar cell assembly |
-
2010
- 2010-07-07 CN CN201020262258.6U patent/CN201859877U/en not_active Expired - Lifetime
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|---|---|---|---|---|
| JP2020098931A (en) * | 2013-07-05 | 2020-06-25 | アールイーシー ソーラー プライベート リミテッド | Solar cell assembly |
| EP3017520B1 (en) | 2013-07-05 | 2020-10-14 | REC Solar Pte. Ltd. | Solar cell assembly |
| JP2022043315A (en) * | 2013-07-05 | 2022-03-15 | アールイーシー ソーラー プライベート リミテッド | Solar cell module including solar cell assembly |
| JP7362795B2 (en) | 2013-07-05 | 2023-10-17 | アールイーシー ソーラー プライベート リミテッド | Solar module including solar cell assembly |
| US12212146B2 (en) | 2013-07-05 | 2025-01-28 | Rec Solar Pte. Ltd. | Solar cell assembly |
| CN109065641A (en) * | 2013-12-09 | 2018-12-21 | 太阳能公司 | Manufacture solar battery emitter region is injected and covered using autoregistration |
| CN109065641B (en) * | 2013-12-09 | 2022-05-10 | 太阳能公司 | Solar cell emitter region fabrication using self-aligned implantation and capping |
| CN103681918A (en) * | 2013-12-20 | 2014-03-26 | 湖南共创光伏科技有限公司 | Film solar cell component and packaging method thereof |
| CN103681918B (en) * | 2013-12-20 | 2016-08-17 | 湖南共创光伏科技有限公司 | A kind of Thinfilm solar cell assembly and method for packing thereof |
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