CN211907444U - Solar cell module - Google Patents
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- CN211907444U CN211907444U CN202020952309.1U CN202020952309U CN211907444U CN 211907444 U CN211907444 U CN 211907444U CN 202020952309 U CN202020952309 U CN 202020952309U CN 211907444 U CN211907444 U CN 211907444U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model relates to a solar cell module, including protective layer, first adhesive layer, solar cell layer, second adhesive layer and the backing plate layer of stacking gradually the setting, the protective layer is made by transparent material, first adhesive layer permeable ultraviolet light and visible light, the solar cell layer is equipped with solar cell, the backing plate layer with the whole sealing connection of protective layer. Above-mentioned solar module adopts the transparent protective layer to replace the super white knurling toughened glass on conventional subassembly upper strata, adopts the backing plate layer to replace the organic backplate of conventional subassembly or dual glass assembly's backplate glass to cancel the aluminum product frame, on the one hand, reduced solar module's weight by a wide margin, on the other hand, also reduced manufacturing cost by a wide margin.
Description
Technical Field
The utility model relates to an energy field especially relates to a solar module.
Background
As is well known, the solar photovoltaic industry mainly based on crystalline silicon solar cells has been rapidly developed in nearly 20 years, and the global productivity has reached several hundred GW. The cost and the sale price of the crystalline silicon solar cell module are continuously reduced, however, in many photovoltaic power generation application occasions, the price of the photovoltaic module still appears to be expensive, the solar cell module is inexhaustible for popularizing and applying solar energy, and no renewable energy source with environmental pollution exists, so that certain obstacles are formed. As shown in fig. 1, a conventional crystalline silicon solar cell module in the prior art is manufactured by a lamination technology, and is composed of an ultra-white coated toughened glass 10, a first hot-melt adhesive film 20, a solar cell layer 30, a second hot-melt adhesive film 40, an organic or glass back plate 50, an aluminum frame 60, and other materials. The service life of the components manufactured by the technology can reach 25-30 years and even longer. In practical applications, people often pay attention not to the long service life of the components, but to the economical and practical needs. In addition, the conventional module has a heavy weight, wherein the glass and aluminum frame occupy the main part, which brings inconvenience to many mobile applications, and although the thin film solar cell such as cadmium telluride, copper indium gallium selenide and the like can be light and portable, the price is higher, the power generation efficiency is low, the attenuation is large, and the thin film solar cell cannot be favored by the broad users.
SUMMERY OF THE UTILITY MODEL
Accordingly, there is a need for a solar cell module that is inexpensive to manufacture and lightweight.
A solar cell module comprises a protective layer, a first adhesive layer, a solar cell layer, a second adhesive layer and a cushion plate layer which are sequentially stacked;
the protective layer is made of a transparent material;
the first adhesive layer can be transparent to ultraviolet light and visible light;
the solar cell layer is provided with a solar cell;
the protective layer is integrally connected with the gasket plate layer in a sealing way
In one embodiment, the solar cell is a crystalline silicon solar cell.
In one embodiment, the solar cell is a monolithic cell or is formed by connecting a plurality of cells in series or in parallel.
In one embodiment, the protective layer has a thickness of 0.1mm to 2 mm.
In one embodiment, the protective layer outer surface is a smooth or frosted surface.
In one embodiment, the protective layer is a single layer structure or a multi-layer composite structure.
In one embodiment, the first adhesive layer is a hot melt adhesive, and the material of the first adhesive layer is at least one selected from EVA, POE, PVB, and silicone rubber.
In one embodiment, the second adhesive layer is a hot melt adhesive, and the material of the second adhesive layer is at least one selected from EVA, POE, PVB, and silicone rubber.
In one embodiment, the backing plate layer is selected from any one of a fiberglass plate material, a stainless steel plate material, an aluminum plate material or other weather-resistant plastic plate material.
In one embodiment, the protective layer may be a single layer film selected from at least one of PVF, PVDF, ETFE, or PET or a multi-layer composite film selected from at least one of TPT or KPK.
Above-mentioned solar module adopts the transparent protective layer to replace the super white knurling toughened glass on conventional subassembly upper strata, adopts the backing plate layer to replace the organic backplate of conventional subassembly or dual glass assembly's backplate glass to cancel the aluminum product frame, on the one hand, reduced solar module's weight by a wide margin, on the other hand, also reduced manufacturing cost by a wide margin.
The utility model has the advantages that: the solar cell module is low in cost, low in selling price, economical, practical, light and durable, is particularly convenient to transport, is simple and easy to install, can be paved, hung, adhered, nailed and riveted at any place irradiated by sunlight, can be combined by connecting a plurality of modules in series and in parallel, and greatly meets the practical requirements of the users.
Drawings
FIG. 1 is a schematic structural diagram of a solar cell module in the prior art;
fig. 2 is a schematic structural diagram of a solar cell module according to an embodiment.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" or "in communication with" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper", "lower", "vertical", "horizontal", "left", "right" and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 2, a solar cell module 10 according to an embodiment includes a protective layer 100, a first adhesive layer 200, a solar cell layer 300, a second adhesive layer 400, and a backing layer 500, which are sequentially stacked.
The protection layer 100 is made of a transparent material, and is disposed on the outermost layer of the solar cell module 10 to protect the solar cell layer 300.
Specifically, the protective layer 100 has good light transmittance and weather resistance, allows visible light and ultraviolet light to pass through, and can maintain stability for a long time in a light environment, and the protective layer 100 may be a single-layer film selected from at least one of PVF (polyvinyl fluoride), PVDF (polyvinylidene fluoride), ETFE (ethylene-tetrafluoroethylene copolymer), or PET (polyethylene terephthalate) or a multi-layer composite film selected from at least one of TPT (polyvinyl fluoride) or KPK (tetrafluoro film). Preferably, since the TPT (polyvinyl fluoride) composite film and the KPK (tetrafluoro film) composite film have excellent weather resistance, the use of the TPT (polyvinyl fluoride) composite film or the KPK (tetrafluoro film) composite film as the material of the protective layer 100 may make the service life of the solar cell module longer.
Further, the thickness of the protective layer 100 is 0.1mm to 2mm, and since the light transmittance of the specific material is fixed, the amount of light transmitted through the protective layer 100 is negatively correlated with the thickness of the protective layer 100, that is, the thicker the thickness of the protective layer 100 is, the less the amount of light is transmitted, and the photoelectric conversion efficiency of the solar cell layer 300 is accordingly reduced; on the contrary, the thinner the thickness of the protection layer 100 is, the more the light quantity is transmitted, which is beneficial to improve the photoelectric conversion efficiency of the solar cell layer 300, and therefore, the higher the light quantity is maintained by reasonably selecting the thickness of the protection layer 100. Preferably, the thickness of the protective layer 100 is 0.1mm to 0.5 mm.
In this embodiment, the protection layer 100 is a smooth surface, when sunlight irradiates the protection layer 100, a part of light is specularly reflected at an interface of the protection layer 100, and another part of light is refracted through the surface of the protection layer 100 to enter the protection layer 100 and penetrate through the first adhesive layer 200 to finally reach the solar cell layer 300, and the surface area of the smooth surface of the protection layer 100 is small, so that the luminous flux entering the solar cell layer 300 through the protection layer 100 is favorably increased.
In another embodiment, the protective layer 100 is a frosted surface, when sunlight irradiates on the protective layer 100, a part of the light is refracted to enter the protective layer 100 through the surface of the protective layer 100 and penetrates through the first adhesive layer 200 to finally reach the solar cell layer 300, and another part of the light is diffusely reflected on the interface of the protective layer 100, so as to avoid light pollution to the environment due to specular reflection.
In another embodiment, the side of the protective layer 100 away from the first adhesive layer 200 is further provided with a nano super-hydrophobic coating (not shown), which gives the protective layer 100 self-cleaning ability for automatically removing stains from the surface of the protective layer 100 in rainy days. Because the solar cell set is located outdoors, the user can not regularly clean the surface of the protective layer 100, after a period of time, dust is easily accumulated on the protective layer 100 and dirt is formed, the light transmittance is seriously affected, the protective layer 100 has self-cleaning capability by arranging the transparent super-hydrophobic coating on the surface of the protective layer 100, at ordinary times, the dust is deposited on the protective layer 100, and when raining, the dust can be easily washed away by rainwater, so that the protective layer 100 of the solar cell assembly 10 is in a clean state, and the solar cell assembly 10 further keeps higher photoelectric conversion efficiency. The transparent super-hydrophobic material on the market can be used as the super-hydrophobic coating of the utility model.
The first adhesive layer 200 is disposed between the protective layer 100 and the solar cell layer 300, and is used for bonding the protective layer 100 and the solar cell layer 300 together.
Specifically, the first adhesive layer 200 has good light transmittance, is transparent to ultraviolet light and visible light, has excellent adhesive strength, has high stability, is not easily weathered under strong light, and can maintain good adhesion fastness among the protective layer 100, the solar cell layer 300, and the cushion layer 500 for a long time.
Further, the first adhesive layer 200 is a hot melt adhesive, and the material of the first adhesive layer 200 is selected from at least one of EVA (ethylene vinyl acetate), POE (polyethylene octene co-elastomer), PVB (polyvinyl butyral/polyvinyl butyral), and silicone rubber.
The solar cell layer 300 is provided with a photosensitive material, which can convert solar energy into electric energy after absorbing light with a specific wavelength. The optional solar cell is a crystalline silicon solar cell, and further comprises a monocrystalline silicon solar cell and a polycrystalline silicon solar cell.
Specifically, the side length of the solar cell layer 300 is less than the side lengths of the protective layer 100, the first adhesive layer 200, the second adhesive layer 400 and the cushion layer 500, the protective layer 100 and the cushion layer 500 are integrally attached together through the first adhesive layer 200 and the second adhesive layer 400, the solar cell layer 300 is arranged between the protective layer 100 and the cushion layer 500, one side of the solar cell layer 300 is connected with the protective layer 100 through the first adhesive layer 200, and the other side of the solar cell layer is connected with the cushion layer 500 through the second adhesive layer 400. The solar cell layer 300 is provided with a plurality of PN junctions, and when light is irradiated to the PN junctions, if light is irradiated to the solar cell and light is absorbed at the interface layer, photons having sufficient energy can excite electrons from covalent bonds in P-type silicon and N-type silicon so as to generate electron-hole pairs, and the electrons and holes near the interface layer are separated from each other by an electric field action before recombination, wherein the electrons move to the N region and the holes move to the P region. The P area is positively charged, the N area is negatively charged, and thus the thin layer between the N area and the P area generates electromotive force, and further current is output outwards.
In the present embodiment, the crystalline silicon solar cell provided on the solar cell layer 300 is a single monolithic cell.
In some embodiments, the crystalline silicon solar cell disposed on the solar cell layer 300 is formed by dividing a whole cell into half or smaller cell units connected in series or in parallel, and different output voltages or output currents can be obtained by connecting a plurality of cell units in series or in parallel; meanwhile, the serial and parallel combination of the plurality of solar cell modules is convenient for users to use.
The second adhesive layer 400 is disposed on a side of the solar cell layer 300 away from the first adhesive layer 200, and is used for adhering the solar cell layer 300 to the cushion layer 500.
Specifically, the second adhesive layer 400 has excellent adhesive strength, high stability, and is not easily weathered and deteriorated, and can maintain good adhesion between the solar cell layer 300 and the cushion layer 500 for a long time.
Further, the second adhesive layer 400 is a hot melt adhesive, and the material of the second adhesive layer 400 is selected from at least one of EVA, POE, PVB, and silicone rubber.
The cushion layer 500 is disposed on a side of the second adhesive layer 400 away from the solar cell layer 300, and provides a supporting function for the whole solar cell module 10.
Specifically, the cushion layer 500 has high strength and weather resistance, meets the use requirements of different environments, and can maintain stability in outdoor environments for several years or even decades. Alternative bedding layer 500 materials include fiberglass sheet material, stainless steel sheet material, aluminum sheet material, or other weather resistant sheet material, it being understood that other materials having high strength and weatherability may also be used as the bedding layer material of the present invention.
Above-mentioned solar module 10 adopts transparent protective layer 100 to replace the super white knurling toughened glass on conventional subassembly upper strata, adopts the organic backplate of backing plate layer 500 replacement conventional subassembly or dual glass assembly's backplate glass to cancel the aluminum product frame, on the one hand, reduced solar module's weight by a wide margin, on the other hand, also reduced manufacturing cost by a wide margin.
Specific examples are as follows.
Example 1
Referring to fig. 2, the solar cell module of the present embodiment includes a protection layer 100, a first adhesive layer 200, a solar cell layer 300, a second adhesive layer 400, and a cushion layer 500.
The protective layer 100 is made of PVF (polyvinyl fluoride) film material with a single-layer structure, the thickness of the protective layer is 0.1mm, the surface of the protective layer is a smooth surface, the first adhesive layer 200 is EVA (ethylene vinyl acetate) hot melt adhesive, the solar cell layer 300 is provided with a monolithic monocrystalline silicon solar cell, the second adhesive layer 400 is EVA hot melt adhesive, and the cushion layer 500 is a glass fiber plate. The side length of the protective layer 100 is the same as the side lengths of the first adhesive layer 200, the second adhesive layer 400 and the cushion layer 500, the side length of the solar cell layer 300 is smaller than the side lengths of the protective layer 100, the first adhesive layer 200, the second adhesive layer 400 and the cushion layer 500, the protective layer 100 and the cushion layer 500 are integrally connected in a sealing manner through the second adhesive layer 200, the solar cell layer 300 is arranged in the protective layer 100 and the cushion layer 500, one side of the solar cell layer is connected with the protective layer 100 through the first adhesive layer 200, and the other side of the solar cell layer is connected with the cushion layer 500 through the second adhesive layer 400.
Above-mentioned solar module adopts transparent protective layer 100 to replace the super white knurling toughened glass on conventional subassembly upper strata, adopts the organic backplate of backing plate layer 500 replacement conventional subassembly or dual glass assembly's backplate glass to cancel the aluminum product frame, on the one hand, reduced solar module's weight by a wide margin, on the other hand, also reduced manufacturing cost by a wide margin. Meanwhile, the smooth surface protection layer 100 improves the utilization rate of light, which is helpful for improving the photoelectric conversion efficiency.
Example 2
The solar cell module of the embodiment includes a protection layer 100, a first adhesive layer 200, a solar cell layer 300, a second adhesive layer 400, a cushion layer 500, and a nano super-hydrophobic coating disposed on the protection layer 100.
The protective layer 100 is made of PVDF (polyvinylidene fluoride) material with a single-layer structure, the thickness of the protective layer is 0.5mm, the first adhesive layer 200 is POE (polyethylene octene co-elastomer) hot melt adhesive, the solar cell layer 300 is provided with a monocrystalline silicon solar cell string formed by connecting two solar cell units with equal size in series through a whole cell, the second adhesive layer 400 is PVB (polyvinyl butyral/polyvinyl butyral) hot melt adhesive, the cushion layer 500 is a stainless steel plate material, wherein the side length of the protective layer 100 is the same as that of the first adhesive layer 200, the second adhesive layer 400 and the cushion layer 500, the side length of the solar cell layer 300 is smaller than that of the protective layer 100, the first adhesive layer 200, the second adhesive layer 400 and the cushion layer 500, the protective layer 100 and the cushion layer 500 are integrally and hermetically connected through the second adhesive layer 200, the solar cell layer 300 is arranged in the protective layer 100 and the cushion layer 500, one side of the solar cell layer is connected with the protective layer 100 through the first adhesive layer 200, and the other side is connected to the mat layer 500 by the second adhesive layer 400. The nano super-hydrophobic coating is arranged on one side of the protective layer 100 far away from the first adhesive layer 200 and is prepared by coating a self-cleaning glass coating with the model AF-6000 provided by Nelumbo leaf nanotechnology Co., Ltd, Ningbo city, on the protective layer 100 and drying.
Above-mentioned solar module adopts transparent protective layer 100 to replace the super white knurling toughened glass on conventional subassembly upper strata, adopts the organic backplate of backing plate layer 500 replacement conventional subassembly or dual glass assembly's backplate glass to cancel the aluminum product frame, on the one hand, reduced solar module's weight by a wide margin, on the other hand, also reduced manufacturing cost by a wide margin. Meanwhile, under the action of the nano super-hydrophobic coating, the frosted surface of the protective layer 100 can prevent light from being subjected to mirror reflection on the surface of the protective layer 100 to cause light pollution on one hand, and on the other hand, the nano super-hydrophobic coating endows the protective layer 100 with excellent self-cleaning capability, so that dust on the surface of the protective layer 100 can be easily washed away in rainy days when meeting water.
Example 3
This example is similar to example 2 except that the protective layer 100 is made of an ETFE (ethylene-tetrafluoroethylene copolymer) film having a thickness of 0.8 mm.
Example 4
The solar cell module of the present embodiment includes a protection layer 100, a first adhesive layer 200, a solar cell layer 300, a second adhesive layer 400, and a cushion layer 500.
The protective layer 100 is a TPT (polyvinyl fluoride) transparent composite film with a multilayer structure, the surface of the protective layer is a smooth surface, the thickness of the protective layer is 1mm, the first adhesive layer 200 is silicon rubber, a polycrystalline silicon solar cell string formed by dividing a whole cell into 6 equal-size solar cell units in parallel is arranged on the solar cell layer 300, the second adhesive layer 400 is POE (polyethylene octene co-elastomer) hot melt adhesive, and the cushion layer 500 is a glass fiber plate. The side length of the protective layer 100 is the same as the side lengths of the first adhesive layer 200, the second adhesive layer 400 and the cushion layer 500, the side length of the solar cell layer 300 is smaller than the side lengths of the protective layer 100, the first adhesive layer 200, the second adhesive layer 400 and the cushion layer 500, the protective layer 100 and the cushion layer 500 are integrally connected in a sealing manner through the second adhesive layer 200, the solar cell layer 300 is arranged in the protective layer 100 and the cushion layer 500, one side of the solar cell layer is connected with the protective layer 100 through the first adhesive layer 200, and the other side of the solar cell layer is connected with the cushion layer 500 through the second adhesive layer 400.
Above-mentioned solar module adopts the super white knurling toughened glass on conventional subassembly upper strata to replace the protective layer 100 that multilayer combined material made, adopts the backing plate layer 500 to replace the organic backplate of conventional subassembly or the backplate glass of dual glass assembly to cancel the aluminum product frame, on the one hand, reduced solar module's weight by a wide margin, on the other hand, also reduced manufacturing cost by a wide margin. Meanwhile, the solar cell layer 300 is formed by connecting a plurality of cells in parallel, which is beneficial to obtaining higher output current.
Example 5
The solar cell module of the present embodiment includes a protection layer 100, a first adhesive layer 200, a solar cell layer 300, a second adhesive layer 400, and a cushion layer 500.
The protective layer 100 is a KPK (tetrafluoro film) transparent composite film with a multilayer structure, the thickness of the protective layer is 1.5mm, the first adhesive layer 200 is PVB hot melt adhesive, a crystalline silicon solar cell string formed by connecting a whole cell in series into 6 equal-size solar cell units is arranged on the solar cell layer 300, the second adhesive layer 400 is silicon rubber, and the cushion layer 500 is a glass fiber plate. The side length of the protective layer 100 is the same as the side lengths of the first adhesive layer 200, the second adhesive layer 400 and the cushion layer 500, the side length of the solar cell layer 300 is smaller than the side lengths of the protective layer 100, the first adhesive layer 200, the second adhesive layer 400 and the cushion layer 500, the protective layer 100 and the cushion layer 500 are integrally connected in a sealing manner through the second adhesive layer 200, the solar cell layer 300 is arranged in the protective layer 100 and the cushion layer 500, one side of the solar cell layer is connected with the protective layer 100 through the first adhesive layer 200, and the other side of the solar cell layer is connected with the cushion layer 500 through the second adhesive layer 400.
Above-mentioned solar module adopts the super white knurling toughened glass who has protective layer 100 that multilayer composite film made to replace conventional subassembly upper strata, adopts the organic backplate of backing plate layer 500 replacement conventional subassembly or dual glass assembly's backplate glass to cancel the aluminum product frame, on the one hand, reduced solar module's weight by a wide margin, on the other hand, also reduced manufacturing cost by a wide margin, simultaneously, solar module layer 300 is established ties by a plurality of batteries and is formed, is favorable to obtaining higher output voltage.
Example 6
This embodiment is similar to embodiment 5 except that the protective layer 100 is made of a PET (polyethylene terephthalate) film having a single-layer structure, the thickness of which is 2mm, and the backing plate layer 500 is made of an aluminum plate material.
Above-mentioned solar cell module adopts transparent protective layer 100 to replace the super white knurling toughened glass on conventional subassembly upper strata, adopts the organic backplate of backing plate layer 500 replacement conventional subassembly or dual glass assembly's backplate glass to cancel the aluminum product frame, on the one hand, reduced solar cell module's weight by a wide margin, on the other hand, also reduced manufacturing cost by a wide margin, simultaneously, solar cell layer 300 is established ties by a plurality of batteries and is formed, is favorable to obtaining higher output voltage.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A solar cell module is characterized by comprising a protective layer, a first adhesive layer, a solar cell layer, a second adhesive layer and a backing plate layer which are sequentially stacked;
the protective layer is made of a transparent material;
the first adhesive layer can be transparent to ultraviolet light and visible light;
the solar cell layer is provided with a solar cell;
the protective layer is integrally connected with the gasket plate layer in a sealing mode.
2. The solar cell assembly according to claim 1, wherein the solar cell is a crystalline silicon solar cell.
3. The solar cell module as claimed in claim 2, wherein the solar cell is a monolithic cell or is formed by connecting in series or in parallel cell units which are divided into a plurality of pieces by the monolithic cell.
4. The solar cell module as claimed in claim 1, wherein the protective layer has a thickness of 0.1mm to 2 mm.
5. The solar cell module as claimed in claim 1, wherein the outer surface of the protective layer is a smooth or frosted surface.
6. The solar cell module as claimed in claim 5, wherein the protective layer has a single-layer structure or a multi-layer composite structure.
7. The solar cell module of claim 1, wherein the first adhesive layer is a hot melt adhesive, and the material of the first adhesive layer is at least one selected from EVA, POE, PVB, and silicone rubber.
8. The solar cell module of claim 1, wherein the second adhesive layer is a hot melt adhesive, and the material of the second adhesive layer is at least one selected from EVA, POE, PVB, and silicone rubber.
9. The solar cell module as claimed in claim 1, wherein the backing plate layer is selected from any one of glass fiber plate, stainless steel plate, aluminum plate or other weather-resistant plastic plate.
10. The solar cell module as claimed in claim 1, wherein the protective layer is a single-layer film selected from at least one of PVF, PVDF, ETFE or PET or a multi-layer composite film selected from at least one of TPT or KPK.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020952309.1U CN211907444U (en) | 2020-05-29 | 2020-05-29 | Solar cell module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020952309.1U CN211907444U (en) | 2020-05-29 | 2020-05-29 | Solar cell module |
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| CN211907444U true CN211907444U (en) | 2020-11-10 |
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| CN202020952309.1U Active CN211907444U (en) | 2020-05-29 | 2020-05-29 | Solar cell module |
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