CN219643872U - Monocrystalline silicon solar flexible assembly and junction box thereof - Google Patents
Monocrystalline silicon solar flexible assembly and junction box thereof Download PDFInfo
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- CN219643872U CN219643872U CN202320489967.5U CN202320489967U CN219643872U CN 219643872 U CN219643872 U CN 219643872U CN 202320489967 U CN202320489967 U CN 202320489967U CN 219643872 U CN219643872 U CN 219643872U
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- monocrystalline silicon
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- electrical connection
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 title claims abstract description 33
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000002313 adhesive film Substances 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 3
- 238000000429 assembly Methods 0.000 claims 3
- 238000003466 welding Methods 0.000 abstract description 12
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000565 sealant Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 8
- 238000002834 transmittance Methods 0.000 description 6
- 238000010248 power generation Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910021419 crystalline silicon Inorganic materials 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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 monocrystalline silicon solar flexible assembly and a junction box thereof, wherein the junction box comprises a box body, a box cover, electric connection sheets and diodes, wherein at least two electric connection sheets are arranged in the box body, the box cover is fixed on the upper side of the box body, a fixing boss is arranged at the bottom of the box body, the electric connection sheets are fixed on the upper side of the fixing boss, a lead hole is formed in the middle of the fixing boss, the diodes are connected between two adjacent electric connection sheets, the electric connection sheets and the diodes leave the bottom of the box body, the electric connection sheets and the diodes are prevented from contacting rainwater for a long time, the lead holes for connecting the electric connection sheets are formed in the fixing boss, bus bars led out from a solar battery assembly are connected with the electric connection sheets through the lead holes, then the junction box is sealed through pouring sealant, the sealing property of the junction box is good, the increase of welding spot resistance caused by moisture absorption of welding positions of the diodes is avoided, and the service life of the junction box is prolonged.
Description
Technical Field
The utility model belongs to the technical field of solar energy, and particularly relates to a monocrystalline silicon solar flexible assembly and a junction box thereof.
Background
The crystalline silicon flexible solar module is an environment-friendly charging device for charging 12V lead-acid storage batteries in solar houses by utilizing solar energy, solar ships, solar motor homes, solar tents, solar parks, solar street lamps and the like, and can be used for distributed power generation, light weight, weight of the flexible module is 2.8KG-3KG per square meter, and compared with the conventional glass module, weight of the flexible module is reduced by about 60% -80%, weighing of some roofs is smaller, so that the flexible module is wider in utilization range, supports and ribs are not needed in the installation process, and the flexible module is more convenient to install.
Along with the development of new energy technology, the application of the smooth flexible solar module on 12V lead-acid storage battery electric equipment is more and more extensive, and the flexible solar module of crystalline silicon needs to utilize the terminal box to connect a plurality of modules in series or in parallel when using, because solar module all uses in the open air, waterproof is the important performance of terminal box, although current terminal box can reach basic waterproof requirement through designs such as sealing rubber ring, but when the terminal box is in humid environment for a long time, the welding point of terminal box can be influenced to the welded part of diode through the welding point of terminal box to the rainwater, can lead to the solder joint resistance to increase, and it is serious to generate heat, can reduce the life of terminal box.
In addition, the smooth flexible solar module is mainly a laminated board formed by packaging PET composite films and back films, the surface of a solar panel packaged by using PET is easy to scratch, and if heavy rain or typhoon is encountered, the solar panel can delaminate for a long time, so that adverse phenomena such as short circuit and fire of battery pieces in the flexible solar module are caused.
Disclosure of Invention
The utility model aims to provide a monocrystalline silicon solar flexible assembly and a junction box thereof, and aims to solve the problems that a diode welding point of the junction box of the existing solar assembly generates heat seriously due to poor waterproof property and the service life of the junction box is influenced.
In order to solve the technical problems, the utility model is realized in such a way that a junction box of a monocrystalline silicon solar flexible assembly comprises: the box body, lid, connect electric piece and diode, at least two connect the electric piece setting to be in the box body, the lid is fixed the upside of box body the bottom of box body is equipped with fixed boss, connect the electric piece to fix the upside of fixed boss, the lead wire hole has been seted up at fixed boss middle part, the diode is connected between two adjacent connect the electric piece.
Further, a welding wire hole opposite to the lead wire hole is formed in the middle of the electric connection piece.
Further, the bottom of the box body at two sides of the fixing boss is also provided with an inserting hole, and two sides of the power receiving piece are provided with pins fixed in the inserting hole.
Further, fixing seats are arranged on two sides of the fixing boss, and the insertion holes are formed in the fixing seats.
Further, the diode includes a kickback prevention diode and a bypass diode, and the kickback prevention diode is connected with the bypass diode in series with the power connection pad.
Further, the electric connection piece comprises an anode electric connection piece, a cathode electric connection piece and a middle electric connection piece, the middle electric connection piece is arranged between the anode electric connection piece and the cathode electric connection piece, the anti-recoil diode is connected with the bypass diode at two ends of the middle electric connection piece, and two ends of the box body are respectively provided with an anode wiring hole for connecting the anode electric connection piece and a cathode wiring hole for connecting the cathode electric connection piece.
The monocrystalline silicon solar flexible assembly is characterized by comprising a solar cell assembly and the junction box, wherein the solar cell assembly is connected with the junction box through a bus bar.
Further, the solar cell module comprises a back film, a cell piece and a front film which are sequentially arranged, and prepreg layers are respectively arranged on two sides of the cell piece.
Further, two sides of the prepreg layer are provided with adhesive film layers, and the adhesive film layers are made of EVA materials.
Further, the front film is ETFE material.
Compared with the prior art, the monocrystalline silicon solar flexible assembly and the junction box thereof have the beneficial effects that:
according to the solar cell module, the fixing boss is arranged at the bottom of the box body, the power receiving piece is fixed on the fixing boss, so that the power receiving piece and the diode leave the bottom of the box body, the power receiving piece and the diode are prevented from contacting rainwater for a long time, the fixing boss is provided with the lead holes for connecting the power receiving piece, the bus bars led out of the solar cell module are connected with the power receiving piece through the lead holes, and then the junction box is sealed by pouring sealant, the sealing performance of the junction box is good, the increase of welding spot resistance caused by dampness at the welding position of the diode is avoided, and the service life of the junction box is prolonged.
The solar cell module adopts the novel mode that prepreg and back film are combined with each other to protect the solar cell, so that the solar panel is firmer, light in weight and convenient to carry, and the defects that the original flexible module is easy to delaminate, is too heavy in weight and is not easy to carry are overcome.
The adoption of the ETFE high-transmittance transparent protective film and the monocrystalline silicon battery piece improves the transmittance of the flexible component, so that the power generation efficiency of the solar component is improved. And the ETFE transparent protective film has strong corrosion resistance and long service life.
Drawings
FIG. 1 is a schematic view of a monocrystalline silicon solar module in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic view of a solar cell module in a layered configuration in accordance with an embodiment of the present utility model;
FIG. 3 is a schematic view of the overall structure of a junction box of a monocrystalline silicon solar energy flexible assembly in an embodiment of the utility model;
FIG. 4 is an exploded view of a junction box of a monocrystalline silicon solar energy flexible assembly in an embodiment of the utility model;
FIG. 5 is a top view of a junction box of a monocrystalline silicon solar energy flexible assembly in an embodiment of the utility model;
FIG. 6 is a cross-sectional view at A-A in FIG. 5;
FIG. 7 is a cross-sectional view at B-B in FIG. 6;
in the drawings, each reference numeral denotes:
100. a solar cell module 200 and a junction box;
101. a back film 102, a prepreg layer 103, a battery sheet 104, a front film 105, and a film layer;
201. the box body 202, the box cover 203, the positive electrode tab 204, the middle tab 205, the negative electrode tab 206, the anti-recoil diode 207, the bypass diode 208, the fixing boss 209, the lead hole 210, the fixing seat 211, the insertion hole 212, the pin 213, the welding line hole 214, the buckle 215 and the clamping angle.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Examples:
referring to fig. 1-2, in the present embodiment, a single crystal silicon solar flexible module includes a solar cell module 100 and a junction box 200, and the solar cell module 100 is connected to the junction box 200 through a bus bar. The solar cell module 100 includes a back film 101, a cell sheet 103, and a front film 104, which are sequentially disposed, and prepreg layers 102 are provided on both sides of the cell sheet 103. The solar cell module 100 adopts the novel mode that the prepreg and the back film 101 are mutually combined to protect the solar cell piece 103, so that the solar panel is firmer, light in weight and convenient to carry, and the defects that the original flexible module is easy to delaminate, and is too heavy in weight and difficult to carry are overcome. The two sides of the prepreg layer 102 are provided with adhesive film layers 105, and the adhesive film layers 105 are made of EVA materials. The front film 104 is made of ETFE material, and the transparent protective film with high ETFE transmittance and the battery piece 103 are adopted to improve the transmittance of the flexible component, so that the power generation efficiency of the solar component is improved. And the ETFE transparent protective film has strong corrosion resistance and long service life.
The solar cell module 100 is manufactured by laminating the cell sheets 103 into an ultrathin cell plate through the steps of cell sheet series connection, material lamination, teflon lamination forming and the like, cutting into a required shape through finished product laser cutting, welding and fixing the outer lead corresponding to the product through the junction box 200 after the product is cooled, testing the power parameters and the like, and completing the manufacture of the module.
The monocrystalline silicon solar flexible component is an ultra-light flexible component between a high-efficiency monocrystalline silicon battery piece and a novel flexible process, and mainly has the advantages that the monocrystalline silicon solar battery piece is laminated with a prepreg material through an ETFE film to form the flexible component, and the monocrystalline silicon solar flexible component absorbs solar energy and converts the solar energy into electric energy to provide electric energy for an electric appliance, and the device has the following specific principle that: when the sunlight is sufficient, the monocrystalline silicon solar flexible component generates current and voltage under the action of the sunlight, the external lead led out from the junction box 200 of the product directly charges the existing electronic product which accords with the output voltage and current, the portable solar energy solar flexible component is convenient to carry, mainly maintains 12V lead-acid storage battery power, is convenient to install and use, and is suitable for power utilization emergency use of solar houses, solar ships, solar caravans, solar tents, solar parking lots, energy storage power boxes and the like. The internal combustion engine is not required to be used for electric energy conversion, so that the consumption of rare energy sources is reduced; the adoption of the ETFE high-transmittance transparent protective film and the monocrystalline silicon cell 103 improves the transmittance of the flexible component, so that the power generation efficiency of the solar component is improved; the adoption of the high-strength ETFE ensures that the solar panel is firmer, can bend at 30 degrees and is not easy to scratch and damage, thereby improving the defect that the original monocrystalline silicon solar module cannot bend; the novel prepreg and back plate combined mode is adopted to protect the solar cell 103, and the novel lamination process is adopted to package the solar panel, so that the solar panel is firmer, light in weight and convenient to carry, and the defects that the original flexible assembly is easy to delaminate, and is too heavy in weight and difficult to carry are overcome; the waterproof and anti-ultraviolet junction box 200 is adopted, so that the defect that the original junction box is waterproof and easy to weather is overcome. In addition, the ETFE film is laminated by the Teflon grid cloth layer, so that the surface of the flexible component is honeycomb-shaped, and the defects that the appearance shape of the original smooth surface flexible component is single, hard and few in selectivity are overcome. The solar cell module 100 adopts stainless steel hanging positions, has strong corrosion resistance and long service life, and overcomes the defect that the original crystalline silicon module cannot be randomly installed and hung; compared with the conventional glass component, the single crystal silicon solar flexible component can be used for distributed power generation, is light in weight, has the weight of 2.8KG-3KG per square meter, is reduced by about 60% -80% compared with the conventional glass component, has the weight of 11KG-14KG per square meter, has small roof weighing, and is wider in utilization range, and supports and ribs are not needed in the installation process, so that the flexible component is more convenient to install.
Referring to fig. 3-6, the junction box 200 of the monocrystalline silicon solar flexible assembly described above includes: the box body 201, the lid 202, connect electric piece and diode, connect the electric piece setting in the box body 201, lid 202 is fixed in the upside of box body 201, is equipped with fixed boss 208 in the bottom of box body 201, connects the electric piece and fixes the upside at fixed boss 208, and the diode is connected between two adjacent electric pieces. The waterproof and anti-ultraviolet material is adopted for the box body 201 and the box cover 202, so that the defect that the original junction box 200 is easy to weather is overcome.
The electric connection piece is fixed on the fixing boss 208, so that the electric connection piece and the diode leave the bottom of the box body 201, the electric connection piece and the diode are prevented from contacting rainwater for a long time, the welding point resistance of the diode is prevented from being increased due to moisture, and the service life of the junction box 200 is prolonged.
In this embodiment, the lead hole 209 of connecting the electric connection piece has been seted up on fixed boss 208, lead hole 209 has been seted up at fixed boss 208 middle part, the welding line hole 213 that sets up relatively with lead hole 209 has been seted up at the middle part of electric connection piece, it is more convenient to weld, the busbar that draws forth from solar module 100 connects the electric connection piece through lead hole 209, then seals the junction box 200 through pouring the sealant, the leakproofness of junction box 200 is better.
The power connection pieces in this embodiment include a positive power connection piece 203, a negative power connection piece 205, and an intermediate power connection piece 204, and the intermediate power connection piece 204 is disposed between the positive power connection piece 203 and the negative power connection piece 205. The diode includes a kickback prevention diode 206 and a bypass diode 207, and the kickback prevention diode 206 and the bypass diode 207 are connected in series to a power pad. The anti-kickback diode 206 prevents reverse charging and the bypass diode 207 prevents hot plate effects, improving the shortcomings of the original flexible component junction box 200 that are prone to kickback during use and cause component burn-out. The anti-kickback diode 206 and the bypass diode 207 are connected to two ends of the middle connection piece 204, and two ends of the box 201 are respectively provided with a positive electrode wiring hole connected with the positive electrode connection piece 203 and a negative electrode wiring hole connected with the negative electrode connection piece 205.
The bottom of the box body 201 at two sides of the fixing boss 208 is also provided with an inserting hole 211, two sides of the positive electrode power connection sheet 203, the negative electrode power connection sheet 205 and the middle power connection sheet 204 are respectively provided with a pin 212 fixed in the inserting hole 211, two sides of the fixing boss 208 are provided with fixing seats 210, the inserting hole 211 is formed in the fixing seats 210, and the power connection sheets are fixed more firmly and are convenient to install.
Referring to fig. 7, a plurality of buckles 214 are provided on the side of the case 201, a clip 215 is provided on the case cover 202 correspondingly, the clip 215 passes through the buckles 214 when the case cover 202 is fixed on the case 201 downwards, and the clip 215 is fixed on the lower side of the buckles 214. In order to ensure the sealing property of the junction of the cover 202 and the case 201, a sealing ring should preferably be provided between the cover 202 and the case 201.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The utility model provides a terminal box of monocrystalline silicon solar energy flexible assembly, its characterized in that includes box body, lid, connects electric piece and diode, at least two connect the electric piece setting to be in the box body, the lid is fixed the upside of box body the bottom of box body is equipped with fixed boss, connect the electric piece to fix the upside of fixed boss, the lead wire hole has been seted up at fixed boss middle part, the diode is connected two adjacent connect between the electric piece.
2. The junction box of a monocrystalline silicon solar energy flexible assembly according to claim 1, wherein a solder wire hole is provided in the middle of the electrical connection piece opposite to the lead wire hole.
3. The junction box of monocrystalline silicon solar energy flexible assemblies according to claim 1, wherein the bottom of the box body at two sides of the fixing boss is also provided with a jack, and two sides of the power connection piece are provided with pins fixed in the jack.
4. A junction box for a monocrystalline silicon solar energy flexible assembly in accordance with claim 3, wherein two sides of the fixing boss are provided with fixing seats, and the insertion holes are formed in the fixing seats.
5. The junction box of monocrystalline silicon solar energy flexible assemblies according to claim 1, wherein the diodes comprise a kickback prevention diode and a bypass diode, the kickback prevention diode being connected to the grounding plate in series with the bypass diode.
6. The junction box of monocrystalline silicon solar energy flexible assemblies according to claim 5, wherein the electrical connection pieces comprise an anode electrical connection piece, a cathode electrical connection piece and a middle electrical connection piece, the middle electrical connection piece is arranged between the anode electrical connection piece and the cathode electrical connection piece, the anti-recoil diode and the bypass diode are connected at two ends of the middle electrical connection piece, and two ends of the box body are respectively provided with an anode wiring hole for connecting the anode electrical connection piece and a cathode wiring hole for connecting the cathode electrical connection piece.
7. A monocrystalline silicon solar flexible assembly comprising a solar cell assembly and the junction box of any of claims 1-6, the solar cell assembly being connected to the junction box by a bus bar.
8. The monocrystalline silicon solar energy flexible assembly according to claim 7, wherein the solar cell assembly comprises a back film, a cell and a front film arranged in sequence, and prepreg layers are respectively arranged on two sides of the cell.
9. The monocrystalline silicon solar energy flexible assembly of claim 8, wherein two sides of the prepreg layer are provided with adhesive film layers, and the adhesive film layers are made of EVA materials.
10. The monocrystalline silicon solar energy flexible assembly of claim 8, wherein the front film is ETFE material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320489967.5U CN219643872U (en) | 2023-03-02 | 2023-03-02 | Monocrystalline silicon solar flexible assembly and junction box thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320489967.5U CN219643872U (en) | 2023-03-02 | 2023-03-02 | Monocrystalline silicon solar flexible assembly and junction box thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219643872U true CN219643872U (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320489967.5U Active CN219643872U (en) | 2023-03-02 | 2023-03-02 | Monocrystalline silicon solar flexible assembly and junction box thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219643872U (en) |
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2023
- 2023-03-02 CN CN202320489967.5U patent/CN219643872U/en active Active
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