A portable solar photovoltaic panel

Abstract

The utility model relates to photovoltaic panel technical field discloses a kind of portable solar photovoltaic panel, including flexible substrate and multiple photovoltaic monomers, multiple photovoltaic monomers are arranged along the length direction interval of flexible substrate, and the gap between adjacent two photovoltaic monomers forms folding seam;Wherein, photovoltaic monomer includes base material layer and fluorine-based plastic layer, base material layer includes oppositely arranged light-receiving surface and back light surface;Fluorine-based plastic layer is set on light-receiving surface.Such design, in non-use state, flexible substrate can be turned over and folded along folding seam, improve the carrying convenience of portable solar photovoltaic panel, secondly, fluorine-based plastic layer is overlaid on the light-receiving surface of base material layer, can effectively inhibit dust, dirt, water vapor and other pollutants on photovoltaic panel surface accumulation, surface dirt stripping can be realized by natural precipitation or wind effect, reduce artificial maintenance frequency and cost.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic panel technology, and in particular to a portable solar photovoltaic panel. Background Technology

[0002] Photovoltaic power generation technology, as an important form of renewable energy utilization, has been widely applied in centralized power plants, distributed rooftops, and outdoor mobile energy fields.

[0003] Currently, mainstream photovoltaic (PV) panels generally adopt an encapsulation structure consisting of tempered glass covering and an aluminum frame. This structure improves the mechanical strength and impact resistance of the PV panel to a certain extent, enabling it to withstand certain environmental loads such as hail and wind pressure. However, this structure also increases the overall weight of the PV panel, leading to difficulties in transportation, installation, and mobile applications, low deployment efficiency, and limited applicability. It is particularly unfavorable for applications with high requirements for lightweighting and portability, such as emergency power supply, field operations, or portable power generation.

[0004] To improve portability, flexible photovoltaic (PV) panel technology has emerged in the market. These panels utilize polymer-based backsheets or glass-free encapsulation processes, significantly reducing weight and achieving a degree of flexibility. However, the surface of flexible PV panels easily attracts dust and contaminants that are difficult to remove naturally, resulting in poor self-cleaning capabilities and a significant decrease in power generation efficiency over long-term use. Furthermore, flexible materials are insufficient in terms of impact resistance, puncture resistance, and weather resistance, especially prone to aging and damage in harsh outdoor environments. Utility Model Content

[0005] The main objective of this invention is to provide a portable solar photovoltaic panel that addresses the shortcomings of the prior art and solves the problem of poor self-cleaning ability of flexible photovoltaic panels.

[0006] To achieve the above objectives, this utility model proposes a portable solar photovoltaic panel, comprising: Flexible substrate; Multiple photovoltaic cells are arranged at intervals along the length of the flexible substrate, and the gaps between two adjacent photovoltaic cells form folding seams. The photovoltaic cell includes: A substrate layer, the substrate layer comprising a light-facing surface and a back-light-facing surface disposed opposite to each other; A fluoropolymer layer is disposed on the light-facing surface.

[0007] Optionally, the substrate layer includes a first polymer adhesive layer, a first anti-microcrack functional layer, a second polymer adhesive layer, a second anti-microcrack functional layer, a third polymer adhesive layer, a crystalline silicon solar cell layer, a fourth polymer adhesive layer, and a fiber substrate layer, which are stacked sequentially from top to bottom, and the fluoropolymer layer is disposed on the first polymer adhesive layer.

[0008] Optionally, the first polymer adhesive layer, the second polymer adhesive layer, the third polymer adhesive layer, and the fourth polymer adhesive layer are all ethylene-vinyl acetate copolymer layers.

[0009] Optionally, both the first anti-microcrack functional layer and the second anti-microcrack functional layer are glass fiber composite material layers.

[0010] Optionally, the fiber substrate layer is a glass fiber board.

[0011] Optionally, a handle box is provided at one end of the flexible substrate, and a handle groove is provided on the handle box.

[0012] Optionally, the flexible substrate is equipped with multiple supports, and each of the multiple supports is respectively configured to correspond one-to-one with a multiple of the photovoltaic cells.

[0013] Optionally, the support includes: The support body can switch between an unfolded state and a retracted state. The support body includes: A connecting plate, the connecting plate being used to connect to the flexible substrate; A support plate, wherein the support plate and the connecting plate are movably connected by a pivot. The support plate is provided with a first snap-fit ​​part, and the connecting plate is provided with a second snap-fit ​​part. When the first snap-fit ​​part and the second snap-fit ​​part are engaged, the bracket body is in the storage state.

[0014] Optionally, the first snap-fit ​​portion includes a mating hole and a first snap protrusion located within the mating hole, and the second snap-fit ​​portion includes a snap-fit ​​body and a second snap protrusion for mating with the first snap protrusion. When the bracket body is in a retracted state, the upper end face of the first snap protrusion and the lower end face of the second snap protrusion abut against each other.

[0015] Optionally, the flexible substrate has fixing straps on both sides, a first pressing buckle is installed on the fixing straps, and a second pressing buckle that cooperates with the first pressing buckle is provided on the back of the flexible substrate.

[0016] Beneficial Effects: The portable solar photovoltaic panel proposed in this utility model includes a flexible substrate and multiple photovoltaic cells. The photovoltaic cells are arranged at intervals along the length of the flexible substrate, and the gaps between adjacent photovoltaic cells form folding seams. Each photovoltaic cell includes a substrate layer and a fluoropolymer layer. The substrate layer includes a light-facing surface and a backlighting surface arranged opposite each other. The fluoropolymer layer is disposed on the light-facing surface. This design allows the flexible substrate to be folded along the folding seams when not in use, enabling the portable solar photovoltaic panel to be folded and stored, thereby reducing the volume and space occupied by the portable solar photovoltaic panel when not in use and improving its portability. Secondly, the light-facing surface of the substrate layer serves as a light-receiving interface, and the fluoropolymer layer on it gives the photovoltaic panel a low surface energy characteristic, which can effectively inhibit the accumulation of pollutants such as dust, oil, and water vapor on the photovoltaic panel surface. Surface contaminants can be removed by natural precipitation or wind, reducing the frequency and cost of manual maintenance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is one of the schematic diagrams showing the portable solar photovoltaic panel disclosed in this application in use when unfolded; Figure 2 This is a schematic diagram of the portable solar photovoltaic panel disclosed in this application after being folded and stored. Figure 3 This is a schematic diagram of the structure of a photovoltaic cell disclosed in this application; Figure 4 This is a schematic diagram of the structure of the flexible substrate disclosed in this application; Figure 5 This is the second schematic diagram of the portable solar photovoltaic panel disclosed in this application when it is unfolded and in use; Figure 6 This is a schematic diagram of the support disclosed in this application in its deployed state; Figure 7 for Figure 6 A magnified view of a section at point A in the middle; Figure 8 This is a schematic diagram of the bracket disclosed in this application in its stowed state; Figure 9 This is a schematic diagram of the structure when the first and second snap-fit ​​parts disclosed in this application are engaged.

[0019] Explanation of icon numbers: 1. Flexible substrate; 11. First base layer; 12. Second base layer; 13. Third base layer; 2. Photovoltaic cell; 21. Substrate layer; 210. First polymer adhesive layer; 211. First anti-microcrack functional layer; 212. Second polymer adhesive layer; 213. Second anti-microcrack functional layer; 214. Third polymer adhesive layer; 215. Crystalline silicon cell layer; 216. Fourth polymer adhesive layer; 217. Fiber substrate layer; 218. Fifth polymer adhesive layer; 219. Fabric layer; 22. Fluoroplastic layer; 3. Bracket; 31. Bracket body; 311. Connecting plate; 3111. First mating surface; 31111. First arc-shaped surface; 31112. First flat surface; 3112. Adhesive groove; 312. Support plate; 3121. Second mating surface; 31211. Second arc-shaped surface; 31212. Second flat surface; 4. First snap-fit ​​part; 41. Mating hole; 42. First snap-fit ​​protrusion; 421. First guide slope; 422. Second guide slope; 5. Second snap-fit ​​part; 51. Snap-fit ​​body; 52. Second snap-fit ​​protrusion; 521. Third guide slope; 522. Fourth guide slope; 6. Fixing strap; 7. Suitcase with handle; 8. Handle groove; 9. Sundial block.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0025] See Figures 1-4 As shown in the embodiment of this application, a portable solar photovoltaic panel includes a flexible substrate 1 and a plurality of photovoltaic cells 2. The plurality of photovoltaic cells 2 are disposed on the front side of the flexible substrate 1 and are arranged at intervals along the length direction of the flexible substrate 1. The gap between two adjacent photovoltaic cells 2 forms a folding seam. The photovoltaic cell 2 includes a substrate layer 21 and a fluoropolymer layer 22. The substrate layer 21 includes a light-facing surface and a back-light-facing surface disposed opposite to each other, and the fluoropolymer layer 22 is disposed on the light-facing surface.

[0026] When not in use, the flexible substrate 1 can be flipped and folded along the folding seam, so that the portable solar photovoltaic panel can be folded and stored, thereby reducing the volume and space occupied by the portable solar photovoltaic panel when not in use and improving the portability of the portable solar photovoltaic panel.

[0027] In this embodiment, the light-facing surface of the substrate layer 21 serves as the light-receiving interface, and a fluoropolymer layer 22 is applied to it, giving the photovoltaic panel a low surface energy characteristic. This effectively inhibits the accumulation of pollutants such as dust, oil, and water vapor on the photovoltaic panel surface, and allows surface contaminants to be removed under natural precipitation or wind, reducing the frequency and cost of manual maintenance.

[0028] It is worth mentioning that the fluoropolymer layer 22 in this embodiment not only has high light transmittance, but also can suppress light absorption loss caused by the accumulation of pollutants, so that more light can be absorbed by the solar cells in the photovoltaic panel, thereby improving the light utilization rate of the photovoltaic panel and thus improving the photoelectric conversion efficiency of the photovoltaic panel.

[0029] See Figure 3 As shown, the substrate layer 21 includes a first polymer adhesive layer 210, a first anti-microcrack functional layer 211, a second polymer adhesive layer 212, a second anti-microcrack functional layer 213, a third polymer adhesive layer 214, a crystalline silicon solar cell layer 215, a fourth polymer adhesive layer 216, a fiber substrate layer 217, a fifth polymer adhesive layer 218, and a fabric layer 219, which are stacked sequentially from top to bottom. The fluoropolymer layer 22 is disposed on the first polymer adhesive layer 210.

[0030] Specifically, the first polymer adhesive layer 210, the second polymer adhesive layer 212, the third polymer adhesive layer 214, the fourth polymer adhesive layer 216 and the fifth polymer adhesive layer 218 are all ethylene-vinyl acetate copolymer layers, the first anti-microcrack functional layer 211 and the second anti-microcrack functional layer 213 are both (PGF) glass fiber composite material layers, and the fiber substrate layer 217 is a glass fiber board.

[0031] By adopting the above structural design, the synergistic effect of each functional material layer not only ensures photoelectric conversion performance but also improves the photovoltaic panel's impact resistance, waterproof performance, and service life. Specifically, the multilayer ethylene-vinyl acetate copolymer adhesive layer forms a stable interfacial bond between the functional layers, effectively avoiding the risk of interlayer delamination. Simultaneously, its excellent light transmittance ensures efficient light absorption by the crystalline silicon cell layer 215. The addition of a glass fiber composite material layer reduces microcracks and warping, lowering the risk of microcracks in the crystalline silicon cell layer 215 during lamination and use. Furthermore, the glass fiber substrate enhances the photovoltaic panel's rigidity and dimensional stability.

[0032] See Figure 4 As shown, in one embodiment of this application, the flexible substrate 1 includes a first base layer 11, a second base layer 12, and a third base layer 13 arranged sequentially from top to bottom. The first base layer 11 is a fluoropolymer, the second base layer 12 is an ethylene-vinyl acetate copolymer, and the third base layer 13 is a fabric. The first base layer 11 is made of fluoropolymer, which can effectively inhibit the accumulation of pollutants such as dust, oil, and moisture on the surface of the flexible substrate 1.

[0033] See Figure 1 As shown, a carrying case 7 is provided at one end of the flexible substrate 1, and a carrying handle groove 8 is provided on the carrying case 7. This design makes it easy for users to carry, thereby improving the portability of the portable solar photovoltaic panel.

[0034] In one embodiment of this application, the carrying case 7 is provided with a storage space, in which a controller is installed. The controller is equipped with multiple interfaces, including but not limited to a USB interface, a Type interface, and an XT30 interface. The controller has an MPPT charging circuit, which enables the photovoltaic panel to directly charge mobile digital products such as mobile phones and computers through interfaces such as the USB interface and the Type interface, thereby meeting the portable charging needs. It can also charge energy storage products through the XT30 interface.

[0035] Specifically, the storage space inside the carrying case 7 can accommodate the controller, as well as adapter cables and related accessories. By integrating storage and carrying functions into the carrying case 7, it not only makes it easier for users to hold and carry the photovoltaic panels, but also eliminates the need for an additional carrying accessory bag, thereby improving the overall portability and ease of use of the photovoltaic panels.

[0036] It should be noted that the MPPT charging circuit mentioned above is prior art, and this application does not involve any improvement to the MPPT charging circuit. Therefore, this application will not elaborate further.

[0037] In one embodiment of this application, a sundial block 9 is provided on the handle box 7. The position of the projection of the gnomon on the sundial block 9 or the position of the projection point can be used to determine whether the sunlight is facing the photovoltaic panel.

[0038] See Figure 1 and Figure 2 As shown, the flexible substrate 1 has fixing straps 6 on both sides, and a first pressing buckle is installed on the fixing straps 6. The flexible substrate 1 has a second pressing buckle that cooperates with the first pressing buckle on the back side.

[0039] When the flexible substrate 1 is folded in sequence to form multiple folded layers stacked on top of each other, the first pressing buckle and the second pressing buckle can be engaged. At this time, the multiple folded layers are bound together to be in a compact stacked state, thereby preventing the flexible substrate 1 from unfolding during storage and carrying.

[0040] See Figure 5 As shown, the flexible substrate 1 is equipped with multiple supports 3, and the multiple supports 3 are respectively set to correspond one-to-one with multiple photovoltaic cells 2.

[0041] See Figure 6 As shown, the bracket 3 includes a bracket body 31, which can switch between an unfolded state and a retracted state. When the bracket body 31 is in the unfolded state, one part of the bracket body 31 abuts against the ground and the other part abuts against the back of the photovoltaic panel, so that the photovoltaic panel can be placed at an angle. When the photovoltaic panel needs to be folded up, the bracket body 31 is first switched from the unfolded state to the retracted state, so that the bracket body 31 is stored and fixed to the back of the photovoltaic panel, and then the photovoltaic panel is folded up for easy carrying.

[0042] Specifically, the bracket body 31 includes a support plate 312 and a connecting plate 311. The connecting plate 311 and the support plate 312 are movably connected. When the bracket body 31 is in the unfolded state, the connecting plate 311 and the support plate 312 form an angle. When the bracket body 31 is in the retracted state, the connecting plate 311 and the support plate 312 are in contact. A glue-receiving groove 3112 is provided on the end face of the connecting plate 311 facing away from the support plate 312. The glue-receiving groove 3112 is filled with an adhesive medium for connecting with the photovoltaic panel.

[0043] See Figure 7 As shown, the connecting plate 311 is provided with a first mating surface 3111, which includes a first arcuate surface 31111 and a first flat surface 31112. The support plate 312 is provided with a second mating surface 3121 that mates with the first mating surface 3111. The second mating surface 3121 includes a second arcuate surface 31211 and a second flat surface 31212. The first arcuate surface 31111 and the second arcuate surface 31211 are opposite to each other, and the first flat surface 31112 and the second flat surface 31212 are opposite to each other. When the support plate 312 is flipped open until the first flat surface 31112 and the second flat surface 31212 are in contact, the bracket body 31 is in the unfolded state.

[0044] Specifically, when the support plate 312 is flipped open to a certain angle and its lower end abuts against the ground, the second flat surface 31212 and the first flat surface 31112 abut against each other, thereby limiting the opening angle of the support plate 312, so that the included angle between the support plate 312 and the connecting plate 311 is always maintained at a predetermined angle.

[0045] In this embodiment, the adhesive medium is a fixative.

[0046] See Figure 8 As shown, the bracket 3 provided in this embodiment has an adhesive groove 3112 on the end face of the connecting plate 311 facing away from the support plate 312, which provides a bearing and working interface for the adhesive medium. This allows the connecting plate 311 to be fixedly connected to the photovoltaic panel through the adhesive medium, thus eliminating the need to drill holes in the photovoltaic panel. This avoids damage to the original waterproof coating and sealing structure of the photovoltaic panel, ensuring the structural integrity of the photovoltaic panel.

[0047] See Figure 1 and Figure 9 As shown, the support plate 312 is provided with a first snap-fit ​​part 4, and the connecting plate 311 is provided with a second snap-fit ​​part 5. When the first snap-fit ​​part 4 and the second snap-fit ​​part 5 are engaged, the bracket body 31 is in a retracted state.

[0048] In this embodiment, the first snap-fit ​​part 4 includes a mating hole 41 and a first snap-fit ​​protrusion 42 located in the mating hole 41. The second snap-fit ​​part 5 includes a snap-fit ​​body 51 and a second snap-fit ​​protrusion 52 for mating with the first snap-fit ​​protrusion 42. When the bracket body 31 is in the storage state, the upper end face of the first snap-fit ​​protrusion 42 and the lower end face of the second snap-fit ​​protrusion 52 abut against each other.

[0049] Specifically, the upper surface of the first latching protrusion 42 is a first guide slope 421, and the lower surface of the first latching protrusion 42 is a second guide slope 422. Correspondingly, the upper surface of the second latching protrusion 52 is provided with a third guide slope 521 that cooperates with the second guide slope 422, and the lower surface of the second latching protrusion 52 is provided with a fourth guide slope 522 that cooperates with the first guide slope 421.

[0050] When the external force drives the support plate 312 to move towards the connecting plate 311 to switch to the retracted state, the mating hole 41 of the first locking part 4 approaches the second locking part 5, and the third guide slope 521 first contacts the second guide slope 422. Then, under the continuous action of the external force, the second locking part 5 deforms. At the same time, through the guiding characteristics of the slope, the second locking part 5 slides along the inclined direction of the second guide slope 422 to smoothly engage with the mating hole 41. This design effectively avoids jamming problems, reduces the fastening resistance, and improves the smoothness and efficiency of the fastening operation. After the second locking part 5 is fully engaged with the mating hole 41, the fourth guide slope 522 contacts the first guide slope 421, thereby completing the locking.

[0051] The first latch 42 and the second latch 52 work together to enhance the stability of the bracket body 31 in the stored state and prevent the support plate 312 from accidentally coming loose due to vibration.

[0052] In summary, the portable solar photovoltaic panel proposed in this invention includes a flexible substrate 1 and multiple photovoltaic cells 2. The multiple photovoltaic cells 2 are arranged at intervals along the length of the flexible substrate 1, and the gap between two adjacent photovoltaic cells 2 forms a folding seam. Each photovoltaic cell 2 includes a substrate layer 21 and a fluoropolymer layer 22. The substrate layer 21 includes a light-facing surface and a backlight surface arranged opposite to each other. The fluoropolymer layer 22 is disposed on the light-facing surface. This design allows the flexible substrate 1 to be folded along the folding seam when not in use, enabling the portable solar photovoltaic panel to be folded and stored, thereby reducing the volume and space occupied by the portable solar photovoltaic panel when not in use and improving its portability. Furthermore, the light-facing surface of the substrate layer 21 serves as a light-receiving interface, and the fluoropolymer layer 22 covers it, giving the photovoltaic panel a low surface energy characteristic. This effectively inhibits the accumulation of pollutants such as dust, oil, and moisture on the photovoltaic panel surface, allowing surface contaminants to be removed by natural precipitation or wind, reducing the frequency and cost of manual maintenance.

[0053] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A portable solar photovoltaic panel, characterized in that, include: Flexible substrate; Multiple photovoltaic cells are arranged at intervals along the length of the flexible substrate, and the gaps between two adjacent photovoltaic cells form folding seams. The photovoltaic cell includes: A substrate layer, the substrate layer comprising a light-facing surface and a back-light-facing surface disposed opposite to each other; A fluoropolymer layer is disposed on the light-facing surface.

2. The portable solar photovoltaic panel according to claim 1, characterized in that, The substrate layer includes, from top to bottom, a first polymer adhesive layer, a first anti-microcrack functional layer, a second polymer adhesive layer, a second anti-microcrack functional layer, a third polymer adhesive layer, a crystalline silicon solar cell layer, a fourth polymer adhesive layer, and a fiber substrate layer, and the fluoropolymer layer is disposed on the first polymer adhesive layer.

3. The portable solar photovoltaic panel according to claim 2, characterized in that, The first polymer adhesive layer, the second polymer adhesive layer, the third polymer adhesive layer, and the fourth polymer adhesive layer are all ethylene-vinyl acetate copolymer layers.

4. The portable solar photovoltaic panel according to claim 2, characterized in that, Both the first anti-microcrack functional layer and the second anti-microcrack functional layer are glass fiber composite material layers.

5. The portable solar photovoltaic panel according to claim 2, characterized in that, The fiber substrate layer is a glass fiber board.

6. The portable solar photovoltaic panel according to claim 1, characterized in that, One end of the flexible substrate is provided with a handle box, and the handle box is provided with a handle groove.

7. The portable solar photovoltaic panel according to claim 1, characterized in that, The flexible substrate is equipped with multiple supports, and each of the multiple supports is respectively configured to correspond one-to-one with a multiple of the photovoltaic cells.

8. The portable solar photovoltaic panel according to claim 7, characterized in that, The support includes: The support body can switch between an unfolded state and a retracted state. The support body includes: A connecting plate, the connecting plate being used to connect to the flexible substrate; A support plate, wherein the support plate and the connecting plate are movably connected by a pivot. The support plate is provided with a first snap-fit ​​part, and the connecting plate is provided with a second snap-fit ​​part. When the first snap-fit ​​part and the second snap-fit ​​part are engaged, the bracket body is in the storage state.

9. The portable solar photovoltaic panel according to claim 8, characterized in that, The first snap-fit ​​portion includes a mating hole and a first snap protrusion located within the mating hole. The second snap-fit ​​portion includes a snap-fit ​​body and a second snap protrusion for mating with the first snap protrusion. When the bracket body is in a retracted state, the upper end face of the first snap protrusion and the lower end face of the second snap protrusion abut against each other.

10. The portable solar photovoltaic panel according to claim 1, characterized in that, The flexible substrate has fixing straps on both sides, and a first pressing buckle is installed on the fixing strap. The flexible substrate has a second pressing buckle on the back side that cooperates with the first pressing buckle.

Images