WO2015096490A1 - 双玻光伏电池组件 - Google Patents
双玻光伏电池组件 Download PDFInfo
- Publication number
- WO2015096490A1 WO2015096490A1 PCT/CN2014/084543 CN2014084543W WO2015096490A1 WO 2015096490 A1 WO2015096490 A1 WO 2015096490A1 CN 2014084543 W CN2014084543 W CN 2014084543W WO 2015096490 A1 WO2015096490 A1 WO 2015096490A1
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- WO
- WIPO (PCT)
- Prior art keywords
- layer
- glass
- double
- photovoltaic cell
- cell module
- Prior art date
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- 239000011521 glass Substances 0.000 title claims abstract description 157
- 238000005538 encapsulation Methods 0.000 claims abstract description 26
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 229920005549 butyl rubber Polymers 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 229920002367 Polyisobutene Polymers 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000005338 frosted glass Substances 0.000 claims description 2
- 229920000620 organic polymer Polymers 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 230000009977 dual effect Effects 0.000 description 8
- 239000010408 film Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000005192 partition Methods 0.000 description 7
- 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
- 238000009434 installation Methods 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000000741 silica gel Substances 0.000 description 6
- 229910002027 silica gel Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- 238000004382 potting Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
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- 239000004020 conductor Substances 0.000 description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
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- 230000001070 adhesive effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- PYGSKMBEVAICCR-UHFFFAOYSA-N hexa-1,5-diene Chemical group C=CCCC=C PYGSKMBEVAICCR-UHFFFAOYSA-N 0.000 description 2
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- 229920003023 plastic Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
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- 230000015556 catabolic process Effects 0.000 description 1
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- 125000006850 spacer group Chemical group 0.000 description 1
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- 229920002397 thermoplastic olefin Polymers 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
- H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
- H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
- H01L31/0201—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules comprising specially adapted module bus-bar structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/02168—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells the coatings being antireflective or having enhancing optical properties for the solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
-
- 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
- H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
-
- 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
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0543—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the refractive type, e.g. lenses
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S30/00—Structural details of PV modules other than those related to light conversion
- H02S30/10—Frame structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
-
- 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
Definitions
- the present invention relates to the field of solar cells, and more particularly to a dual glass photovoltaic cell assembly. Background technique
- the existing double glass components use tempered glass as the back sheet, UV high permeability EVA or PVB on the front side, and white EVA or PVB on the back side EVA.
- tempered glass As the back sheet, UV high permeability EVA or PVB on the front side, and white EVA or PVB on the back side EVA.
- the back of the double glass assembly uses an airtight, impervious glass to prevent moisture from entering the assembly, but the gap between the edges of the two sheets of glass is still a weak link, and moisture can still enter the assembly through the encapsulation film, and Due to the sealing effect of the glass, it is difficult to diffuse out. Under the action of ultraviolet light, the small molecules of acetic acid produced by the decomposition of the EVA encapsulating film will still corrode the cell and reduce the life of the module. In the case of PVB packages, the problem is exacerbated by the high water absorption of PVB.
- the problem with white EVA or PVB on the back is that the white part is likely to spread to the front side of the cell after long-term use, which blocks the cell sheet, causing hot spots and affecting component efficiency.
- a solar photovoltaic module including a glass layer, a front film, a plurality of cells arranged in a spacer array, a back film, and a photovoltaic back plate, the photovoltaic back plate including a specular reflection covered by the cell sheet
- the reflective layer structure is an isosceles trapezoid, when the upper bottom surface is exposed to the front surface of the sunlight, the light is directly reflected, and this portion of the light is not utilized, thereby affecting the photoelectric conversion efficiency.
- the reflective layer has a trapezoidal structure
- the corners of the trapezoidal layer tend to cause a certain degree of damage to the package film and the edge of the cell during the lamination process, thereby reducing the life of the entire solar cell module.
- an object of the present invention is to provide a dual-glass photovoltaic cell assembly that improves the output power of the photovoltaic module, has good weather resistance, long life, high absorption rate to ultraviolet light, and good stability. High security.
- a dual glass photovoltaic cell assembly includes: a body, the body comprising a first glass layer, a first encapsulation layer, a cell stack layer, a second encapsulation layer, and a second glass which are sequentially stacked a layer, an outer edge of the first glass layer and the second glass layer exceeds the first encapsulation layer, the cell stack layer, and the second encapsulation layer
- 1 PIDM136468P An outer edge; a reflective coating disposed on a side surface of the second glass layer facing the battery panel layer; an end seal block, the end seal block being disposed on Between the first glass layer and the second glass layer, and the end seal block is located at an outer circumference of the first encapsulation layer, the cell stack layer, and the second encapsulation layer; and a frame, the frame is encapsulated by a sealant On the outer periphery of the body, the frame has a notch; a junction box, the junction box is disposed at the notch, the junction box is sealed with the body and the frame, and the battery panel layer is A bus bar is drawn between the first glass layer and the second glass layer, and the junction box is electrically connected to the bus bar.
- the double-glass photovoltaic cell assembly of the present invention by providing the end seal block, the deficiency of the conventional photovoltaic module edge to expose the package material is compensated, and the first glass layer and the second glass layer which are densely packed with the upper and lower layers can be well combined.
- the moisture and corrosive gases in the barrier environment enter the inside of the module, slow down the attenuation of the components and extend the life of the components.
- the reflective coating the light passing through the gap of the cell can be reflected back to reduce the package loss.
- the first glass layer and the second glass layer of the body can be prevented from being crushed to the greatest extent, thereby protecting the battery assembly, facilitating transportation and long life.
- the bus bar can be effectively led out from the edge of the body through the bezel.
- FIG. 1 is a cross-sectional view of a dual glass photovoltaic cell assembly in accordance with an embodiment of the present invention
- FIG. 2 is a schematic illustration of the dual glass photovoltaic cell assembly shown in Figure 1;
- Figure 3 is a schematic cross-sectional view of the frame of the double-glass photovoltaic cell assembly shown in Figure 1;
- Figure 4 is a developed perspective view of the frame of Figure 2;
- Figure 5 is a schematic diagram of light reflection of a backing layer in the double-glass photovoltaic cell assembly shown in Figure 1;
- FIG. 6 is a schematic view of a junction box in a dual glass photovoltaic cell assembly in accordance with one embodiment of the present invention.
- Figures 7a and 7b are top and bottom views of the junction box shown in Figure 1;
- Figure 8 is a schematic illustration of a dual glass photovoltaic cell assembly in accordance with another embodiment of the present invention.
- Figure 9 is a partial enlarged view of the double-glass photovoltaic cell assembly shown in Figure 8, showing the assembly of the diode and the junction box;
- Figure 10 is a schematic view showing the positive and negative junction boxes respectively taken out in the double-glass photovoltaic cell assembly shown in Figure 9;
- Figure 11 is a side view in the direction of A in Figure 10;
- Figure 12 is a partial schematic view of the second glass layer of the dual glass photovoltaic cell assembly shown in Figure 9, showing
- first glass layer 11 a first glass layer 11; a first encapsulation layer 12; a cell stack layer 13; a bus bar 131;
- a second encapsulation layer 14 a second glass layer 15; a receiving groove 16;
- a casing 41a a chamber 40a; sub-chambers 401a, 402a and 403a;
- a casing 41b a chamber 410b; a threading hole 411b; a conductive sheet 42b;
- PIDM136468P Connected and “connected” should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or passed through The intermediate medium is indirectly connected and can be internal to the two components.
- the specific meanings of the above terms in the present invention can be understood in the specific circumstances by those skilled in the art.
- the double glass photovoltaic cell assembly comprises: a body 1, a reflective coating 2, an end seal block 3, a side frame 6, and a junction box 4.
- the body 1 includes a first glass layer 11 , a first encapsulation layer 12 , a cell stack layer 13 , a second encapsulation layer 14 , and a second glass layer 15 , which are sequentially stacked and disposed in sequence.
- the outer edges of the glass layer 11 and the second glass layer 15 exceed the outer edges of the first encapsulation layer 12, the cell stack layer 13, and the second encapsulation layer 14.
- the first glass layer 11 may be ordinary low-iron ultra-white embossed tempered glass or coated low-iron ultra-white embossed tempered glass
- the second glass layer 15 may be ordinary low-iron ultra-white embossed tempered glass or ordinary tempered glass. glass.
- the strength of the body 1 is increased, and the ability of the body 1 to withstand the load is improved. Due to its excellent weatherability, aging resistance, insulation and fire resistance, the glass has a much higher wear resistance than the polymer backsheet.
- the use of glass as a back sheet can well enhance the aging resistance of the battery pack, and the pressure resistance and fire resistance of the double glass photovoltaic cell module according to the present invention are also improved.
- the reflective coating 2 is provided on the side surface of the second glass layer 15 facing the cell stack layer 13 (the lower surface as shown in Figs. 1 and 5).
- the reflective coating 2 is in the form of a flat web, and the first glass layer 11 is frosted glass.
- the end seal block 3 is disposed between the first glass layer 1 1 and the second glass layer 15, and the end seal block 3 is located on the outer periphery of the first encapsulation layer 12 / cell stack layer 13 / second encapsulation layer 14. Specifically, the double-glass photovoltaic cell assembly is pressed by the first glass layer 110, the first encapsulation layer 12, the cell stack layer 13, the second encapsulation layer 14, the second glass layer 15, and the end seal block.
- the symbol " / " used in the description of the present application means "and”.
- the frame 6 is encapsulated on the outer periphery of the body 1 by a sealant. Alternatively, the frame is fixed to the outside of the outer edge of the body 1 by silicone, butyl rubber or double-sided tape.
- the frame 6 has a notch 60, the junction box 4 is disposed at the notch 60, the junction box 4 is sealed with the body 1 and the frame 6, and the cell stack 13 leads the bus bar 131 from between the first glass layer 11 and the second glass layer 15.
- the junction box 4 is electrically connected to the bus bar 131 to extract the energy of the battery chip.
- the double-glass photovoltaic cell assembly of the present invention by providing the end seal block, the deficiency of the conventional photovoltaic module edge to expose the package material is compensated, and the first glass layer and the second glass layer which are densely packed with the upper and lower layers can be well combined.
- the moisture and corrosive gases in the barrier environment enter the inside of the module, slow down the attenuation of the components and extend the life of the components.
- the reflective coating the light passing through the gap of the cell can be reflected back to reduce the package loss.
- the first glass layer 11 and the second glass layer 15 of the body 1 can be prevented from being crushed to the utmost extent, thereby protecting the battery assembly, facilitating transportation and long life.
- bus bar 131 can be effectively taken out from the edge of the body through the bezel 6.
- the cross section of the reflective coating 2 is formed into a substantially triangular shape having a vertex angle, and the reflective coating 2 corresponds to an adjacent battery in the battery panel layer 13. Inter-gap, and/or cell edge position settings. Therefore, referring to FIG. 5, the light entering the gap between the first glass layer 11 and the cell sheet is reflected by the triangular reflective coating 2 with a circular chamfer, and the reflected light is incident on the first glass layer 11 to continue to be reflected.
- the use of the battery chip further improves the utilization of photons and improves the output power of the battery components.
- the triangular reflective coating 2 with rounded chamfer does not damage the edge of the cell and the encapsulation film, and can fit well in the battery assembly, increasing the safety and mechanical of the battery assembly. Stability and extended service life.
- the reflective layer corresponding to the gap between adjacent cells in the cell stack layer 13 and/or the edge position of the cell sheet constitutes an integrated network board structure
- the apex angle of the triangle formed by the cross section of the reflective coating 2 is ⁇ /6-5 ⁇ /6. Further, the apex angle of the triangle is ⁇ /4- ⁇ /2. More preferably, the apex angle of the triangle is ⁇ /3.
- the cross section of the reflective coating 2 forms a triangle having a base angle ⁇ of 15-85 degrees. Further, the triangle has a base angle ⁇ angle of 30-70 degrees. More preferably, the triangle has a base angle ⁇ angle of 60 degrees. It will be understood by those skilled in the art that the apex angle and the bottom angle of the above triangle can be used arbitrarily.
- the reflective coating 2 is a white organic polymer layer, including but not limited to a fluorocarbon resin layer, a diallyl polyisophthalate layer, a polyvinylidene fluoride layer, a polyethylene layer, and a polytetrafluoroethylene layer.
- At least one of the polymer layer and the white silica gel layer has high reflectivity and excellent aging resistance.
- the reflective coating 2 is adhered to one side of the transparent layer by processes including, but not limited to, spraying, coating, printing, and the like.
- the junction box 4 is engaged with the outer edge of the body 1 and is glued to the frame 6.
- the junction box 3 is mounted on the edge of the battery assembly instead of being perforated or slotted in the back of the assembly, maintaining the complete structure of the second glass layer 15, which does not form a stress concentration point and is more secure.
- this distribution of the junction box 3 can reduce the length of the internal bus bar and the external cable of the component with respect to the conventional components, saves cost, and reduces the resistance to increase the power output.
- two sides of the junction box 4 facing the body 1 are provided with two engaging legs (not shown), and the two engaging legs are respectively engaged at the outer edges of the body 1.
- the junction box 4 is glued to the first glass layer 11 and the second glass layer 15 of the body 1.
- the body 1 is formed in a rectangular shape, and the junction box 4 is three and spaced apart from each other on one of the short sides of the body 1, and each adjacent two junction boxes 4 Between the package connectors 8 being connected, the package connector 8 encapsulating the outer edge of the body 1 corresponding to the notch 60, thereby encapsulating the connector 8 and
- the bezel 6 collectively protects the edges of the body 1.
- the outer edges of conventional battery components are usually not protected or only protected by tape.
- the components of this structure are easily broken due to the corners of the tempered glass, which is less safe, and is dangerous during transportation and installation. Larger.
- the edge of the battery assembly and the impact resistance of the four corners are greatly improved, and the sealing of the battery assembly is further enhanced. effect.
- the bezel 6 and the package connector 8 can be made of a plurality of materials, respectively.
- the frame 6 is an aluminum member
- the package connector 8 is an insulating member.
- the frame 6 needs to have a grounding hole 64.
- the bezel 6 and the package connector 8 are both aluminum members, and a grounding hole 64 may be provided in each of the package connectors 8 between adjacent two junction boxes 4.
- the present invention is not limited thereto, and both the side frame 6 and the package connector 8 may be insulating members. At this time, the bezel 6 and the package connecting member 8 will not need to be provided with the grounding holes 64.
- the junction box 4 includes: a casing 41a, at least two partitions 42a, a conductive block 43a, a diode 44a, and a connector 45a.
- the casing 41a has a chamber 410.
- the side wall of the chamber 410 has a plurality of threading holes 41.
- the bus bar 131 led out by the battery sheet in the photovoltaic module is adapted to enter the cavity through the threading hole 41 1 .
- Within chamber 410 as shown in Figures 6 and 7b.
- At least two partitions 42a are disposed within the chamber 410 to divide the chamber 410 into at least three sub-chambers, for example, the partition 42a may be a plastic piece.
- a threading hole 41 1 is provided on the side walls of the two sub-chambers of the outermost ends of at least three sub-chambers.
- the threading hole 41 1 is a rectangular hole as shown in Fig. 7b.
- a conductive block 43a is disposed in the chamber 410 and extends through at least three sub-chambers to lengthen the length of the conductive block 43a.
- the bus bar 131 is adapted to be soldered to the conductive block 43a to extract energy from the battery.
- Diode 44a is disposed in the intermediate subchamber of at least three of the subchambers to prevent the cell from burning out when a hot spot effect is encountered and to prevent current backflow when there is no illumination.
- the diode 44a is electrically connected to the conductive block 43a, and preferably, the diode 44a is soldered to the conductive block 43a.
- the connector 45a is located outside the casing 41a and is connected to the conductive block 43a via a cable 46a.
- the chamber 410 is divided into a plurality of sub-chambers by the partition plate 42a, and the diode 44a is disposed in the intermediate sub-chamber, and the welded portion at the diode 44a is welded when the bus bar 131 is welded. Will not melt, avoiding diode desoldering.
- the diode 44a fails or the junction box 4 fails, it is only necessary to solder the bus bar 131, or the bus bar 131 can be taken out from the threading hole 41 1 to remove the junction box, which is convenient and time-saving, facilitates maintenance of the power station, and extends the component. life.
- the double glass photovoltaic cell assembly according to the present embodiment may further include a chip type sheet diode 9 soldered on the bus bar 131 and laminated on the first glass layer 1 1 and the second glass layer 15 Between the two, the battery is prevented from burning off when the hot spot effect is encountered, and the current is prevented from flowing back when there is no light.
- the number of partitions 42a is two and the two partitions 42a will chamber
- 6 PIDM136468P 410 is divided into three sub-chambers, namely a first sub-chamber 401a, a second sub-chamber 402a, and a third sub-chamber 403a, wherein the diode 44a is disposed in the most intermediate sub-chamber 402a, as shown in FIG.
- the subchamber in which the diode 44a is located that is, the second subchamber 402a, is sealed by a potting glue.
- a potting glue may also be poured.
- the casing 41a includes a casing and a cover (not shown) that are fastened to each other, and the casing and the casing are sealed by a butyl rubber to ensure waterproofness of the junction box.
- junction box according to the embodiment of the present invention will be specifically described below with reference to Fig. 6, and the welding of the bus bar 131 and the conductive block 43a will be described as an example.
- the bus bar 131 led out from the battery piece in the photovoltaic module extends through the threading hole 41 1 into the first sub-chamber 401a and the third sub-chamber 403a, as shown in FIG.
- the solder remaining in the sub-chamber 401a and the third sub-chamber 403a is heated to solder the bus bar 131 to the conductive block 43a.
- the potting compound is injected into the second sub-chamber 402a where the diode 44a is located, thereby completing the installation of the junction box.
- junction box according to the embodiment of the present invention solves the problem that the existing junction box is difficult to replace, and the welding bus bar easily causes the diode to be desoldered, prolonging the service life, and achieving a 40-year long warranty.
- a double-glass photovoltaic cell assembly includes a chip-type thin-film diode 9 soldered on a bus bar 131 and laminated on a first glass layer 11 and a second glass. Between the layers 15, the battery sheet is prevented from burning off when the hot spot effect is encountered, and the current is prevented from flowing back when there is no light.
- the junction box 4 is two and formed in an L shape, and the junction box 4 is disposed at two adjacent corners of the body 1, and the bus bar 131 extends into the junction box 4 to take out the energy of the battery sheet.
- the chip diode 9 is directly soldered to the bus bar 131, and the bus bar 131 is taken out from both ends and soldered to the positive and negative wires at the two corners of the body 1 respectively.
- the sheet diode 9 has a side length of 8-12 mm.
- the material of the junction box 4 may be ceramic, thereby improving the tolerance to the environment.
- the material of the junction box 4 can also be plastic.
- the thickness H of the diode 9 is less than 0.8 mm, otherwise the first glass layer 11 and the second glass layer 15 above and below it will be held against.
- the receiving groove 16 is formed on the second glass layer 15.
- the side of the length of the side of the diode 9 is 0. 2mm.
- the diode 9 is substantially in close contact with the first glass layer 11 and the second glass layer 15 located above and below it, so that the heat generated by the diode 9 can be quickly conducted.
- the junction box 4 includes: a casing 41b, a conductive piece 42b, and a connector 43b.
- the casing 41b has a chamber 410b therein, and the side wall of the chamber 410b has a threading hole 411b (as shown in FIG. 5).
- the threading hole 11 is a rectangular hole.
- the conductive strip 42b is disposed in the chamber 410b, wherein the bus bar 131 extends through the threading hole 411b into the chamber 410b and is connected to the conductive sheet 42b.
- the plug 43b is located outside the box 41b and is connected to the conductive block through the cable 44b. .
- the bus bar 131 and the conductive strip 42b may be soldered or snap-fit connections.
- the double-glass photovoltaic cell assembly according to the embodiment of the invention solves the problem that the existing junction box is difficult to replace, and the solder bus bar easily causes the diode to be desoldered, and the service life is prolonged.
- the junction box is simple to install, requires fewer cables and bus bars, reduces resistance and increases power output.
- the adhesive seal member having a water vapor transmission rate of less than 0.01 g/m 2 /day may be a butyl rubber member or a polyisobutylene rubber member, or a water vapor transmission rate of less than 0.01 g / m 2 / day in accordance with the embodiment of the present invention. Therefore, the deficiency of the traditional photovoltaic module edge to expose the packaging material is compensated for, and the first glass layer 11 and the second glass layer 15 which are densely packed with the upper and lower layers can well block the water vapor and corrosive gas entering the component in the environment. Internally, slows component degradation and extends component life. Thereby, the double glass battery module according to the present invention has good weather resistance, high structural strength, long life, and high ultraviolet absorption rate.
- the dual glass photovoltaic cell assembly according to the present invention may further comprise a plurality of fixing devices 5 disposed on a side surface of the second glass layer 15 remote from the cell stack layer 13, It is used to mount the entire battery assembly to somewhere by the fixing device 5.
- the back side of the battery assembly is bonded to the four fixing devices 5 by using a high-strength adhesive, whereby the fixing device 5 can be fixed to the bracket for fixing the battery assembly by screws (not shown). Out).
- This type of installation ensures a more uniform force on the battery components, enhances the ability of the components to withstand loads, and is safer and more reliable.
- the fixture 5 is provided with a positioning member for fixing the double glass battery assembly to the external carrier.
- the fixing means 5 are four and evenly distributed on the surface of the second glass layer 15, i.e., the back of the entire battery assembly. Thereby, it is convenient to mount the entire battery assembly to a certain mounting surface or mounting bracket (not shown).
- a bezel in a double-glass photovoltaic cell assembly according to an embodiment of the present invention will be described in detail below with reference to Figs. 1 to 4, in which three junction boxes are provided on the short side of the main body as an example.
- the frame 6 can be fixed to the outside of the outer edge of the body 1 by silicone, butyl rubber or double-sided tape.
- the frame 6 is formed as a frame structure, and the cross section of the frame 6 has a U-shaped groove, and the width of the groove of the U-shaped groove is larger than the thickness of the body 1 to cover the outer edge of the body 1.
- the thickness of the frame 6 is l_2 mm, that is, the thickness of each side of the U-shaped groove of the frame 6 is l_2 mm.
- the outer surface of the bezel 6 is formed with ridges 62 as shown in FIG.
- the ribs 62 extend along the length of the bezel 6.
- the ridges 62 extend straight or curved along the length of the frame 6, for example, may also extend in a spiral. By providing the ridges, the overall strength of the bezel 6 can be increased, and the appearance of the bezel 6 can be made more beautiful.
- the frame 6 is an integral frame 6 formed by bending a package strip.
- the package strip is a continuous conductor in which the package strip has at least two predetermined bending positions, a 90-degree V-shaped groove 63 is formed at each predetermined bending position, and a grounding hole 64 is formed in the package strip.
- a continuous bezel conductor is used because if each side of the bezel conductor is not continuous, the battery assembly needs to be grounded at each side of the installation, which increases cost and is difficult to install.
- the grounding hole 64 has a diameter of 2-4 mm.
- the assembly can be directly bent and formed, so that the bent 90-degree V-shaped grooves 63 just form the corners of the frame.
- the frame 6 and the connecting member 4 are both insulating polymer materials, it is not necessary to open the grounding hole 64 and the plurality of V-shaped grooves 63 on the frame 6, but directly cut out the required size segments for installation, that is, the frame 6 is connected to the connecting member 4 in sequence.
- the first encapsulation layer 12 and the second encapsulation layer 14 are transparent silica gel layers or polyolefin layers. Therefore, compared with the conventional EVA packaging film, the advantage is that the ultraviolet light absorbed by the EVA ultraviolet absorber can be converted into electric energy to increase the output of the photovoltaic module; in addition, the transparent silica layer or the polyolefin layer is irradiated by ultraviolet light. It is very stable, does not degrade to produce small molecules such as acetic acid, corrodes the battery, and has better weather resistance.
- the transparent silica gel is a film-like structure which is thermoplastic, solid at room temperature, and gradually softens after an increase in temperature.
- Transparent liquid silica gel is a two-component silica gel. It is liquid at room temperature. The two components are uniformly mixed in a ratio of 1:1. After lamination at 5 °C (T 130 °C, it can be cured into a thermosetting transparent silica gel with low lamination temperature. It saves energy and helps to extend the life of the laminator.
- the back and front plates of the double-glass assembly are rigid glass, which is easier to apply and laminate than the conventional backsheet of polymer materials.
- the second encapsulating layer 14 is a polyolefin layer, the thermosetting polyolefin or the thermoplastic polyolefin.
- the temperature of the component may reach 8 in actual use (TlO (TC, the thermoplastic film will soften, have certain fluidity, and the thermosetting film does not There will be this problem, and the components have higher temperature resistance.
- the double-glass photovoltaic cell assembly according to the present invention has good weather resistance, high structural strength, long life, and high ultraviolet absorption rate.
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- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/107,816 US10186625B2 (en) | 2013-12-27 | 2014-08-15 | Double-glass photovoltaic cell module |
JP2016543178A JP2017501584A (ja) | 2013-12-27 | 2014-08-15 | デュアルガラス光電池モジュール |
KR1020167017236A KR20160090898A (ko) | 2013-12-27 | 2014-08-15 | 이중유리 광전지모듈 |
EP14875670.3A EP3089355A4 (en) | 2013-12-27 | 2014-08-15 | Dual-glass photovoltaic cell module |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201310737528.2A CN104752538A (zh) | 2013-12-27 | 2013-12-27 | 双玻光伏电池组件 |
CN201310737528.2 | 2013-12-27 |
Publications (1)
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WO2015096490A1 true WO2015096490A1 (zh) | 2015-07-02 |
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PCT/CN2014/084543 WO2015096490A1 (zh) | 2013-12-27 | 2014-08-15 | 双玻光伏电池组件 |
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US (1) | US10186625B2 (zh) |
EP (1) | EP3089355A4 (zh) |
JP (1) | JP2017501584A (zh) |
KR (1) | KR20160090898A (zh) |
CN (1) | CN104752538A (zh) |
WO (1) | WO2015096490A1 (zh) |
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CN203813724U (zh) * | 2013-12-27 | 2014-09-03 | 比亚迪股份有限公司 | 双玻光伏电池组件及其边框 |
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US10186625B2 (en) | 2019-01-22 |
JP2017501584A (ja) | 2017-01-12 |
EP3089355A1 (en) | 2016-11-02 |
US20160315209A1 (en) | 2016-10-27 |
KR20160090898A (ko) | 2016-08-01 |
EP3089355A4 (en) | 2017-01-11 |
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