CN104377259A - Photovoltaic cell assembly with two glass layers - Google Patents
Photovoltaic cell assembly with two glass layers Download PDFInfo
- Publication number
- CN104377259A CN104377259A CN201310733663.XA CN201310733663A CN104377259A CN 104377259 A CN104377259 A CN 104377259A CN 201310733663 A CN201310733663 A CN 201310733663A CN 104377259 A CN104377259 A CN 104377259A
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- Prior art keywords
- layer
- photovoltaic cell
- frame
- glass photovoltaic
- glass
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- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 26
- 210000004027 cell Anatomy 0.000 claims description 50
- 210000003850 cellular structure Anatomy 0.000 claims description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000741 silica gel Substances 0.000 claims description 9
- 229910002027 silica gel Inorganic materials 0.000 claims description 9
- 229920005549 butyl rubber Polymers 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229920005987 OPPANOL® Polymers 0.000 claims description 2
- 239000005338 frosted glass Substances 0.000 claims description 2
- 229920000620 organic polymer Polymers 0.000 claims description 2
- 238000005538 encapsulation Methods 0.000 abstract description 22
- 239000000463 material Substances 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 6
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- 239000010410 layer Substances 0.000 description 107
- 239000005341 toughened glass Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
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- 238000009434 installation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
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- 229910052742 iron Inorganic materials 0.000 description 3
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- 239000004698 Polyethylene Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
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- 238000005452 bending Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
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- 238000007514 turning Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
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- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
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- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- 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
- Y02E10/52—PV systems with concentrators
Abstract
The invention discloses a photovoltaic cell assembly with two glass layers. The assembly comprises a body, a reflective coating, an end sealing block and a frame, wherein the body comprises the first glass layer, a first encapsulating layer, a cell assembly layer, a second encapsulation layer and the second glass layer, the first glass layer, the first encapsulating layer, the cell assembly layer, the second encapsulation layer and the second glass layer are sequentially stacked, and the outer edge of the first glass layer and the outer edge of the second glass layer are higher than the outer edge of the first encapsulation layer, the outer edge of the cell assembly layer and the outer edge of the second encapsulation layer; the reflective coating is arranged on the second glass layer; the end sealing block is disposed between the first glass layer and the second glass layer and located on the periphery of the first encapsulation layer or the cell assembly layer or the second encapsulation layer; the frame is disposed on the outer periphery of the body. According to the photovoltaic cell assembly, by means of the end sealing block, the defect that a traditional encapsulation material is exposed outside is overcome, moisture and corrosive gas can be prevented from entering the assembly, and the service life of the assembly is prolonged; the reflective coating can reflect light penetrating through a gap of a cell to reduce encapsulation loss, and the frame can effectively protect the cell assembly.
Description
Technical field
The present invention relates to area of solar cell, especially relate to a kind of two glass photovoltaic cell component.
Background technology
Existing pair of glass assembly uses toughened glass as backboard, and front uses high EVA or PVB thoroughly of ultraviolet, and back side one deck EVA uses white EVA or PVB.The defect of this assembly the following aspects:
First, two glass module backside uses airtight, fluid-tight glass, can prevent steam from entering assembly, but the gap between the edge of two sheet glass remains a weak link, steam still can enter component internal through encapsulating film, and due to the airtight effect of glass, is difficult to spread out.Under action of ultraviolet radiation, EVA encapsulating film decomposes the Small molecular such as acetic acid that produces still can corrosion cell sheet, reduces assembly life-span.If PVB encapsulation, because PVB water absorption is very high, problem can be more serious.
The second, the back side uses white EVA or PVB Problems existing to be the front being probably diffused into cell piece after white portion Long-Time Service, is formed and blocks, cause hot spot, affect component efficiency cell piece.
3rd, there is potential safety hazard without frame in module edge, because the place of toughened glass most fragile is edge and corner, if protect improper, is easy to cause assembly cracked.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is to propose a kind of good weatherability, life-span long and high to absorption of UV two glass photovoltaic cell components.
According to the two glass photovoltaic cell component of one of the present invention, comprise: body, described body comprises the first glassy layer, the first encapsulated layer, cell piece group layer, the second encapsulated layer and the second glassy layer that are cascading, and the outward flange of described first glassy layer and described second glassy layer exceedes the outward flange of described first encapsulated layer, cell piece group layer and the second encapsulated layer; Reflecting coating, described reflecting coating is located at the side towards described cell piece group layer of described second glassy layer on the surface; End part seal block, described end part seal block is located between described first glassy layer and described second glassy layer, and described end part seal block is positioned at the periphery of the first encapsulated layer/cell piece group layer/the second encapsulated layer; And frame, described frame is located on the neighboring of described body.
According to of the present invention pair of glass photovoltaic cell component, by arranging end part seal block, compensate for traditional photovoltaic module edge and encapsulating material is exposed to outer deficiency, first glassy layer closely knit in conjunction with levels and the second glassy layer, can be good at intercepting the steam in environment, corrosive gas enters component internal, the assembly that slows down is decayed, and extends assembly life-span; By arranging reflecting coating, the light reflection through cell piece gap can be gone back to reduce encapsulation loss; By arranging frame, when having edge or four turnings of external impacts battery component, the first glassy layer of body and the second glassy layer farthest can be avoided to be crashed, protect battery component thus, be convenient to transport and the life-span long.In addition, can effectively the edge of busbar from body be drawn by frame.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the cutaway view of the two glass photovoltaic cell components according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the two glass photovoltaic cell components shown in Fig. 1;
Fig. 3 is the frame schematic cross-section of the two glass photovoltaic cell components shown in Fig. 1;
Fig. 4 is the expansion schematic diagram of frame in Fig. 2;
Fig. 5 is the light reflection principle figure of the two glass photovoltaic cell component dorsulum layers shown in Fig. 1;
Fig. 6 is the schematic diagram of terminal box in two according to an embodiment of the invention glass photovoltaic cell component;
Fig. 7 a and Fig. 7 b is the top and bottom perspective views of the terminal box shown in Fig. 1;
Fig. 8 is the schematic diagram of two in accordance with another embodiment of the present invention glass photovoltaic cell component;
Fig. 9 is the partial enlarged drawing in the two glass photovoltaic cell components shown in Fig. 8, illustrated therein is the assembling of diode and terminal box;
Figure 10 is the schematic diagram of drawing positive pole and negative terminal box in the two glass photovoltaic cell components shown in Fig. 9 respectively;
Figure 11 be in Figure 10 A to end view;
Figure 12 is the partial schematic diagram of the second glassy layer in the two glass photovoltaic cell components shown in Fig. 9, illustrated therein is holding tank.
Reference numeral:
Body 1;
First glassy layer 11; First encapsulated layer 12; Cell piece group layer 13; Busbar 131;
Second encapsulated layer 14; Second glassy layer 15; Holding tank 16;
Reflecting coating 2; End part seal block 3;
Terminal box 4;
First embodiment:
Box body 41a; Chamber 40a; Sub-chamber 401a, 402a and 403a;
Through wires hole 411a; Dividing plate 42a; Conducting block 43a; Diode 44a; Connector 45a; Cable 46a;
Second embodiment:
Box body 41b; Chamber 410b; Through wires hole 411b; Conducting strip 42b; Plug connector 43b; Cable 44b; Fixture 5; Frame 6; Breach 60; U-lag 61; Raised line 62; V-shaped groove 63; Ground hole 64; Fluid sealant 7; Encapsulation connector 8; Thin slice diode 9
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " on ", D score, "front", "rear", " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Describe according to the two glass photovoltaic cell component of the one of the embodiment of the present invention below with reference to Fig. 1-Figure 12.
According to of the present invention pair of glass photovoltaic cell component, comprising: body 1, reflecting coating 2, end part seal block 3 and frame 6.
As shown in Figure 1, body 1 comprise be cascading the first glassy layer 11, first encapsulated layer 12 be cascading, cell piece group layer 13, second encapsulated layer 14 and the second glassy layer 15, first glassy layer 11 and the second glassy layer 15 outward flange more than the outward flange of the first encapsulated layer 12, cell piece group layer 13 and the second encapsulated layer 14.Alternatively, the first glassy layer 11 can be the super white patterned toughened glass of common low iron or the super white patterned toughened glass of the low iron of plated film, and the second glassy layer 15 can be the super white patterned toughened glass of common low iron or common toughened glass.By adopting the first glassy layer 11 and the second glassy layer 15, improve the intensity of body 1, improve the ability of the bearing load of body 1.Because glass has superpower weatherability, ageing-resistant performance, insulation property and fire protecting performance, anti-wear performance is also high than macromolecule backboard.Use glass can strengthen the ageing-resistant performance of battery component well as backboard, and be also therefore improved according to the withstand voltage properties of of the present invention pair of glass photovoltaic cell component and fire protecting performance.
Reflecting coating 2 is located at the side towards cell piece group layer 13 of the second glassy layer 15 (lower surface as shown in figure 1 and figure 5) on the surface.Alternatively, reflecting coating 2 is dull and stereotyped network-like, and the first glassy layer 11 is frosted glass.
End part seal block 3 is located between the first glassy layer 11 and the second glassy layer 15, and end part seal block 3 is positioned at the periphery of the first encapsulated layer 12/ cell piece group layer 13/ second encapsulated layer 14.Specifically, two glass photovoltaic cell component is that the first glassy layer 11, first encapsulated layer 12, cell piece group layer 13, second encapsulated layer 14, second glassy layer 15 and end part seal block 3 lamination are obtained.The symbol "/" adopted in the description of wherein, the application represents " with ".
Frame 6 is contained on the neighboring of body 1 by sealant sealing, and alternatively, frame is fixed on the outer peripheral outside of body 1 by mechanical structure (such as engaging), silica gel, butyl rubber or two-sided tape.
According to of the present invention pair of glass photovoltaic cell component, by arranging end part seal block, compensate for traditional photovoltaic module edge and encapsulating material is exposed to outer deficiency, first glassy layer closely knit in conjunction with levels and the second glassy layer, can be good at intercepting the steam in environment, corrosive gas enters component internal, the assembly that slows down is decayed, and extends assembly life-span; Assembly also can inapplicable sealing block 3, assembly can meet the life-span that existing standard specifies.By arranging reflecting coating, the light reflection through cell piece gap can be gone back to reduce encapsulation loss; By arranging frame, when having edge or four turnings of external impacts battery component, the first glassy layer 11 of body 1 and the second glassy layer 15 farthest can be avoided to be crashed, protect battery component thus, be convenient to transport and the life-span long.In addition, can effectively the edge of busbar 131 from body be drawn by frame 6.
According to one embodiment of present invention, frame 6 has breach 60, terminal box 4, terminal box 4 is arranged on breach 60 place, terminal box 4 and body 1 and frame 6 sealing-in, cell piece group layer 13 draws busbar 131 between the first glassy layer 11 and the second glassy layer 15, and terminal box 4 is electrically connected to be drawn by the energy of cell piece with busbar 131.
According to some embodiments of the present invention, as shown in Figure 5, the cross section of reflecting coating 2 is formed as the general triangular shape that drift angle is circular arc, and reflecting coating 2 is arranged corresponding to the gap between the adjacent cell sheet in cell piece group layer 13 and/or cell piece marginal position.Thus, with reference to figure 5, the light to cell piece gap is entered from the first glassy layer 11, reflect at the triangle reflecting coating 2 of band circular arc chamfering, light after reflection continues to reflex on cell piece to the first glassy layer 11 and utilizes, so just further increase the utilance of photon, improve the power output of battery component.In addition, in laminating technology, the triangle reflecting coating 2 of band circular arc chamfering can not damage cell piece edge and packaging adhesive film, can be good at agreeing with in battery component, increases fail safe and the mechanical stability of battery component, extends useful life.
Preferably, corresponding to the reflector layer composition integral network plate structure that the gap between the adjacent cell sheet in cell piece group layer 13 and/or cell piece marginal position are arranged,
Alternatively, the leg-of-mutton drift angle radian that the cross section of reflecting coating 2 is formed is ∏/6-5 ∏/6.Further, this leg-of-mutton drift angle radian is ∏/4-∏/2.More preferably, this leg-of-mutton drift angle radian is ∏/3.Alternatively, the leg-of-mutton base angle angle that the cross section of reflecting coating 2 is formed is 15-85 degree.Further, this leg-of-mutton base angle angle is 30-70 degree.More preferably, this leg-of-mutton base angle angle is 60 degree.Those skilled in the art be appreciated that above-mentioned leg-of-mutton drift angle radian and base angle angle can arbitrarily with the use of.
In certain embodiments, reflecting coating 2 is white organic polymer layer, include but not limited at least one in fluorocarbon resin layer, PDAIP layer, polyvinylidene fluoride layer, polyethylene layer, polytetrafluoroethylene floor, fluorocarbon resin modified poly nitride layer, PDAIP modified poly nitride layer, polyvinylidene fluoride modified polymeric layer, PE modified polymeric layer, polytetrafluoroethylmodified modified polymeric layer and white silica gel, there is highly reflective, the features such as resistance to ag(e)ing is excellent.Reflecting coating 2 is adhering closely to hyaline layer one side by including, but are not limited to the processing technologys such as spraying, coating, printing.
As shown in Figure 2 and Figure 8, terminal box 4 is fastened on the outward flange of body 1, and is connect by rubber seal with frame 6.Thus, terminal box 3 is arranged on the edge of battery component, instead of at module backside perforate or fluting, maintain the complete structure of the second glassy layer 15, can not form stress concentration point, fail safe is higher.In addition, this distribution of terminal box 3 can reduce the length of component internal busbar and External cable relative to traditional components, provide cost savings, and decreases resistance increase power stage.Alternatively, the side towards body 1 of terminal box 4 is provided with two engagings pin (scheming not shown), and two engaging pin are fastened on the outer edge of body 1 respectively.Further, in an alternate exemplary, on the first glassy layer 11 that terminal box 4 is adhesive in body 1 and the second glassy layer 15.
According to one embodiment of present invention; as shown in Figure 2; body 1 is formed as rectangle; terminal box 4 is three and is spaced to turn up the soil to be located on one of them minor face of body 1; often be connected by encapsulation connector 8 between adjacent two terminal boxes 4; encapsulation connector 8 encapsulates the outward flange of the body 1 corresponding to breach 60 place, and thus, encapsulation connector 8 and frame 6 are protected the edge of body 1 jointly.In contrast, the outer rim of traditional battery component is not usually protected or is only used adhesive tape protection, the assembly of this structure due to the corner of toughened glass easily stressed and cracked, fail safe is lower, transport and when installing risk larger.And after using U-shaped rigid border and encapsulation connector 8 to protect according to two glass photovoltaic cell components of the embodiment of the present invention, the edge of battery component and the impact resistant capability of corner have had and improve greatly, and further enhance the sealing effectiveness of battery component.Certainly this module edge also can not use frame to protect, or only uses adhesive tape protection.
In the present embodiment, frame 6 and encapsulation connector 8 can be respectively multiple material and make.Wherein, in an alternate exemplary, frame 6 is aluminium part, and encapsulation connector 8 is insulating part, now frame 6 needs to have a ground hole 64.In another alternate exemplary, frame 6 and encapsulation connector 8 are aluminium part, and the encapsulation connector 8 often between adjacent two terminal boxes 4 can be equipped with a ground hole 64.Certainly, the present invention is not limited to this, and frame 6 and encapsulation connector 8 can be all insulating part, and now, frame 6 and encapsulation connector 8 all will not need to arrange ground hole 64.
Specifically describe the structure of the terminal box 4 of the present embodiment below.Terminal box 4 comprises: box body 41a, at least two dividing plate 42a, conducting block 43a, diode 44a and connector 45a.As shown in Figure 6, have chamber 410 in box body 41a, the sidewall of chamber 410 has multiple through wires hole 411, the busbar 131 that in photovoltaic module, cell piece is drawn is adapted to pass through through wires hole 411 and enters in chamber 410, as shown in Fig. 6 and Fig. 7 b.At least two dividing plate 42a are located at so that chamber 410 is divided at least three sub-chamber in chamber 410, and such as dividing plate 42a can be working of plastics.Through wires hole 411 is located on the sidewall of Liang Ge sub-chamber of outermost end at least three sub-chamber.Alternatively, through wires hole 411 is rectangular opening, as shown in Figure 7b.
Conducting block 43a to be located in chamber 410 and to run through at least three sub-chamber, increases the length of conducting block 43a.Busbar 131 is suitable for being welded to connect with conducting block 43a thus being drawn by the energy of cell piece.Diode 44a is located in the dynatron chamber at least three sub-chamber, makes to prevent when running into hot spot effect cell piece from burning, and prevents electric current backflow when not having illumination.Diode 44a is electrically connected with conducting block 43a, and preferably, diode 44a is soldered on conducting block 43a.It is outer and be connected with conducting block 43a by cable 46a that connector 45a is positioned at box body 41a.
Thus, according to the terminal box 4 of the embodiment of the present invention, by dividing plate 42a, chamber 410 is divided into multiple sub-chamber, and diode 44a is located in dynatron chamber, when welding busbar 131, the weld at diode 44a place can not melt, and avoids diode sealing-off.In addition, when diode 44a lost efficacy or terminal box 4 lost efficacy, only need weld lower busbar 131, or busbar 131 is taken out from through wires hole 411 just can take off terminal box, easy and simple to handlely to save time, be convenient to power plant maintenance, prolongation assembly life-span.Further alternatively, two glass photovoltaic modulies according to the present embodiment can also comprise SMD thin slice diode 9, thin slice diode 9 to be welded on busbar 131 and to be laminated between the first glassy layer 11 and the second glassy layer 15, make to prevent when running into hot spot effect cell piece from burning, and prevent electric current backflow when there is no illumination.
According to a preferred raw example of the present invention, the quantity of dividing plate 42a is two, and chamber 410 is divided into three sub-chamber, i.e. the first sub-chamber 401a, the second sub-chamber 402a and the 3rd sub-chamber 403a by two dividing plate 42a, wherein diode 44a is located in middle sub-chamber 402a, as shown in Figure 6.Sealed by casting glue in the sub-chamber i.e. second sub-chamber 402a at diode 44a place.Thus, the casting glue having thermal conductivity good around diode 44a can be kept, the temperature of diode can be reduced in time, protection diode.Alternatively, can cavity be kept in the first sub-chamber 401a and the 3rd sub-chamber 403a, also can pour into casting glue.
Alternatively, box body 41a comprises the cassette holder and lid (scheming not shown) that mutually fasten, is sealed between lid and cassette holder by butyl rubber, thus ensures the water proofing property of terminal box.
Specifically describe the installation process according to the terminal box of the embodiment of the present invention below with reference to Fig. 6, be welded as example with busbar 131 and conducting block 43a and be described.
As shown in Figure 6, the busbar 131 that cell piece is drawn from photovoltaic module extend in the first sub-chamber 401a and the 3rd sub-chamber 403a through through wires hole 411, as shown in Figure 6, busbar 131 is welded on conducting block 43a when heating by reserved in the first sub-chamber 401a and the 3rd sub-chamber 403a scolding tin.Finally casting glue is injected in the second sub-chamber 402a at diode 44a place, thus completes the installation of terminal box.
According to the terminal box of the embodiment of the present invention, solve existing terminal box and be difficult to change and weld the problem that busbar easily causes diode sealing-off, increase the service life, overlength quality guarantee in 40 years can be realized.
As shown in Figure 6, according to another embodiment of the invention, two glass photovoltaic cell component comprises SMD thin slice diode 9, thin slice diode 9 to be welded on busbar 131 and to be laminated between the first glassy layer 11 and the second glassy layer 15, make to prevent when running into hot spot effect cell piece from burning, and prevent electric current backflow when there is no illumination.Now, terminal box 4 is two and is formed as L shape respectively, and terminal box 4 is located at wherein two adjacent corners places of body 1, and busbar 131 to stretch in terminal box 4 thus drawn by the energy of cell piece.Specifically, when laying the cell piece matrix in cell piece group layer, be directly soldered on busbar 131 by thin slice diode 9, busbar 131 is drawn from two ends, is respectively welded in the positive and negative terminal box of body 1 Liang Ge corner, as Figure 8-Figure 10.Alternatively, the length of side of thin slice diode 9 is 8-12mm.
Alternatively, the material of terminal box 4 can be pottery, can improve the tolerance to environment thus.Certainly, the material of terminal box 4 also can be plastics.
Wherein in an alternate exemplary, the thickness H of diode 9 is less than 0.8mm, otherwise will withstand the first glassy layer 11 and the second glassy layer 15 of the side of being located thereon and below.And in another alternate exemplary of the present invention, the thickness H of diode 9 is 0.8-2mm, now in the relative side of the first glassy layer 11 with the second glassy layer 15, at least one is formed with holding tank 16, the total depth h=H-0.8mm of holding tank 16.That is, if when one of them in the first glassy layer 11 and the second glassy layer 15 is provided with holding tank 16, the degree of depth of this holding tank is h=H-0.8mm; If when the first glassy layer 11 and the second glassy layer 15 all have corresponding holding tank 16, the total depth of two holding tanks is h=H-0.8mm.Alternatively, as shown in Figure 6, holding tank 16 is formed on the second glassy layer 15.
Preferably, holding tank 16 is square groove, and the large 0.2mm of the length of side of the side ratio diode 9 of holding tank 16.Like this, the heat conduction that diode 9 produces substantially and the first glassy layer 11 and the second glassy layer 15 close contact of the side of being located thereon and below, thus can be gone out by diode 9 soon.
Particularly, terminal box 4 comprises: box body 41b, conducting strip 42b and plug connector 43b, have chamber 410b in box body 41b, the sidewall of chamber 410b has through wires hole 411b(as shown in Figure 5), alternatively, through wires hole 11 is rectangular opening.Conducting strip 42b is located in chamber 410b, and wherein busbar 131 to stretch in chamber 410b through through wires hole 411b and is connected with conducting strip 42b, and plug connector 43b is positioned at box body 41b and be connected with conducting block by cable 44b outward.Alternatively, busbar 131 and conducting strip 42b can for being welded to connect or being connected together.
According to two glass photovoltaic cell components of the embodiment of the present invention, solve existing terminal box and be difficult to change and weld the problem that busbar easily causes diode sealing-off, increase the service life.In addition, the installation of terminal box is simple, required cable and busbar few, reduce resistance and increase power stage.
In two glass photovoltaic cell components according to some embodiments of the invention, end part seal block 3 can be butyl rubber part or Oppanol part or water vapor transmittance lower than the adhesive glue part of 0.01g/m2/ days, compensate for traditional photovoltaic module edge thus and encapsulating material is exposed to outer deficiency, in conjunction with the first glassy layer 11 and the second glassy layer 15 that levels is closely knit, can be good at intercepting the steam in environment, corrosive gas enters component internal, the assembly that slows down is decayed, and extends assembly life-span.Thus, make according to of the present invention pair of glass battery component, good weatherability, structural strength are high, and the life-span is long, high to absorption of UV.
In a further embodiment, multiple fixture 5 can also be comprised according to of the present invention pair of glass photovoltaic cell component, multiple fixture 5 is located at the side away from cell piece group layer 13 of the second glassy layer 15 on the surface, for whole battery component being mounted to somewhere by fixture 5.Specifically, as shown in Figure 2, the back side of battery component uses that high strength bond is gluing connects four pieces of fixtures 5, fixture 5 can be fixed by screws in the support (scheming not shown) for securing battery cell packs thus.The installation of this mode ensures the stressed more even of battery component, enhances the ability of assembly bearing load, more safe and reliable.
As shown in Figure 2, fixture 5 is provided with the keeper for being fixed on by two glass battery component in outer carrier.Alternatively, fixture 5 is four and is evenly distributed on the surface of the second glassy layer 15, i.e. the back side of whole battery component.Thus, can easily whole battery component be mounted on certain mounting surface or mounting bracket (scheming not shown).
Describing in detail according to the frame in two glass photovoltaic cell components of the embodiment of the present invention below with reference to Fig. 1-Fig. 4, is wherein that three of being located on body minor face are described for terminal box.
As shown in Figure 1, frame 6 can be fixed on the outer peripheral outside of body 1 by silica gel, butyl rubber or two-sided tape.Frame 6 is formed as frame structure, and the cross section of frame 6 has U-lag, and the width of rebate of U-lag is greater than the thickness of body 1 to cover on the outward flange of body 1.
Alternatively, the thickness of frame 6 is 1-2mm, and namely the thickness on every bar limit of the U-lag of frame 6 is 1-2mm.In certain embodiments, the outer surface of frame 6 is formed with raised line 62, as shown in Figure 3.Alternatively, raised line 62 extends along the length direction of frame 6.Further, raised line 62 extends along the length direction straight line of frame 6 or curve, such as, can also be spiral extension.By arranging raised line, the bulk strength of frame 6 can be increased, and make the outward appearance of frame 6 more attractive in appearance.
Frame 6 is the one frame 6 that a package strip is bent to form.Specifically, this package strip is continuous conductor, and wherein package strip has at least two predetermined crooked place, forms the V-shaped groove 63 of 90 degree, and in package strip, arrange ground hole 64 at each predetermined crooked place place.Adopt a continuous print frame conductor, reason is, if every section of limit of frame conductor is discontinuous, then battery component when mounted, and every section of limit all needs ground connection, increases cost and installs difficulty.Preferably, the diameter of ground hole 64 is 2-4mm.In addition, by package strip to be gone out the V-shaped groove 63 of formation three 90 degree in predetermined square position, can direct bending and forming when making to install, the V-shaped groove 63 of 90 degree after such bending just forms the corner of frame.
When frame 6 and connector 4 are the high polymer material member of insulation, without the need to outputing ground hole 64 and multiple V-shaped groove 63 on frame 6, but the size segmentation directly cutting out needs is installed, and is connected successively with connector 4 by frame 6.
In addition, in certain embodiments, the first encapsulated layer 12 and the second encapsulated layer 14 are transparent silicon glue-line or polyolefin layer.Thus, relative to traditional EVA encapsulating film, its advantage is through the ultraviolet light absorbed by EVA ultraviolet absorber, to be converted to electric energy, increases the output of photovoltaic module; In addition, transparent silicon glue-line or polyolefin layer are very stable under UV-irradiation, and the Small molecular such as non-degradable generation acetic acid, corrosion cell sheet, weatherability is better.Specifically, transparent silica gel is a kind of membrane structure, is thermoplasticity, is solid-state under normal temperature, and temperature is softened after raising gradually.Transparent liquid silica gel is a kind of two component silica gel, and be liquid under normal temperature, can be solidified into heat cured transparent silica gel 50 ~ 130 DEG C of laminated after two components are good with 1:1 Homogeneous phase mixing, laminating temperature is low, saves the energy, and contributes to the prolonged layer press life-span.The backboard of two glass assembly and header board are all the glass of rigidity, to be more convenient for gluing and lamination than the Normal back plate of macromolecular material.When the first encapsulated layer 12 and the second encapsulated layer 14 are polyolefin layer, thermosetting polyolefin or TPO.Assembly temperature when reality uses may reach 80 ~ 100 DEG C, and thermoplastic film can soften, and have certain mobility, and thermosetting film does not have this problem, and assembly heat resistance is higher.
According to of the present invention pair of glass photovoltaic cell component, good weatherability, structural strength are high, and the life-span is long, high to absorption of UV.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (13)
1. a two glass photovoltaic cell component, is characterized in that, comprising:
Body, described body comprises the first glassy layer, the first encapsulated layer, cell piece group layer, the second encapsulated layer and the second glassy layer that are cascading, and the outward flange of described first glassy layer and described second glassy layer exceedes the outward flange of described first encapsulated layer, cell piece group layer and the second encapsulated layer;
Reflecting coating, described reflecting coating is located at the side towards described cell piece group layer of described second glassy layer on the surface;
End part seal block, described end part seal block is located between described first glassy layer and described second glassy layer, and described end part seal block is positioned at the periphery of the first encapsulated layer/cell piece group layer/the second encapsulated layer; And
Frame, described frame is located on the neighboring of described body.
2. according to claim 1 pair of glass photovoltaic cell component, is characterized in that, described frame is fixed on the neighboring of described body by silica gel, butyl rubber or two-sided tape.
3. according to claim 1 pair of glass photovoltaic cell component, it is characterized in that, described frame is formed as frame structure, and the cross section of described frame has U-lag, and the width of rebate of described U-lag is greater than the thickness of described photovoltaic cell component to cover on the outward flange of described photovoltaic cell component.
4. according to claim 2 pair of glass photovoltaic cell component, is characterized in that, the thickness of described frame is 1-2mm.
5. according to claim 4 pair of glass photovoltaic cell component, is characterized in that, the outer surface of described frame is formed with raised line, and described raised line extends along the length direction of described frame.
6. according to claim 1 pair of glass photovoltaic cell component, is characterized in that, described frame is the one frame that a package strip is bent to form.
7. according to claim 6 pair of glass photovoltaic cell component, is characterized in that, described package strip has at least two predetermined crooked place, forms the V-shaped groove of 90 degree at each predetermined crooked place place.
8. according to claim 1 pair of glass photovoltaic cell component, is characterized in that, described first encapsulated layer and the second encapsulated layer are transparent liquid silica gel layer or polyolefin layer.
9. the two glass photovoltaic cell components according to any one of claim 1-8, is characterized in that, described end part seal block is butyl rubber part or Oppanol part.
10. according to claim 1 pair of glass photovoltaic cell component, is characterized in that, described pair of glass photovoltaic cell component is that the first glassy layer, the first encapsulated layer, cell piece group layer, the second encapsulated layer, the second glassy layer and end part seal block lamination are obtained.
11. according to claim 1 pairs of glass photovoltaic cell components, it is characterized in that, described reflector layer is arranged corresponding to the gap between the adjacent cell sheet in described cell piece group layer and/or cell piece marginal position, and described reflecting coating is dull and stereotyped network-like, and described first glassy layer is frosted glass.
12. according to claim 11 pairs of glass photovoltaic cell components, is characterized in that, described reflector layer is arranged corresponding to the gap between the adjacent cell sheet in described cell piece group layer and/or cell piece marginal position, and described reflecting coating has convex-concave surface.
13. according to claim 11 pairs of glass photovoltaic cell components, is characterized in that, reflecting coating is white organic polymer coating.
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| CN105185853A (en) * | 2015-10-08 | 2015-12-23 | 阿特斯(中国)投资有限公司 | Double-glazed photovoltaic module |
| WO2016201946A1 (en) * | 2015-06-19 | 2016-12-22 | 中利腾晖光伏科技有限公司 | Lightweight solar cell assembly with high mechanical load resistance |
| CN106301187A (en) * | 2015-06-08 | 2017-01-04 | 江苏银环新能源科技有限公司 | Double glass boundless deckle strap hook intelligent assembly |
| CN106653900A (en) * | 2016-11-30 | 2017-05-10 | 安徽电气集团股份有限公司 | Dual-glass photovoltaic module |
| WO2017114291A1 (en) * | 2015-12-31 | 2017-07-06 | 比亚迪股份有限公司 | Sealing tape compound, sealing tape and application thereof |
| CN107256901A (en) * | 2017-07-19 | 2017-10-17 | 日氟荣高分子材料(上海)有限公司 | A kind of pair of glass photovoltaic module and its production and use |
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| CN109626867A (en) * | 2018-12-29 | 2019-04-16 | 常州华美光电新材料有限公司 | Photovoltaic module high reflection applies glaze glass preparation technique |
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| CN106301187A (en) * | 2015-06-08 | 2017-01-04 | 江苏银环新能源科技有限公司 | Double glass boundless deckle strap hook intelligent assembly |
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| CN109626867A (en) * | 2018-12-29 | 2019-04-16 | 常州华美光电新材料有限公司 | Photovoltaic module high reflection applies glaze glass preparation technique |
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