Flexible portable solar photovoltaic module

Abstract

This invention relates to the field of photovoltaic module technology, specifically a flexible portable solar photovoltaic module, comprising a flexible photovoltaic panel, a storage box assembly, a shape memory alloy frame assembly, and an air-expansion assembly. The shape memory alloy frame assembly is located on both sides of the flexible photovoltaic panel and has shape memory alloy strips embedded inside. The air-expansion assembly includes several air bladders arranged along the flexible photovoltaic panel and connected by rubber tubes. The storage box assembly contains an air pump box and a power control box for controlling the inflation and deflation of the air bladders and energizing the shape memory alloy strips. Inflating the air bladders allows the flexible photovoltaic panel to unfold flat, and deflating the air bladders allows the shape memory alloy strips to restore a preset shape, achieving automatic roll-up for storage. Simultaneously, photovoltaic power generation provides electrical power to the system. This structure achieves automated control of unfolding and storage, offering advantages such as good unfolding flatness, smooth storage, compact structure, and portability.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module technology, specifically to flexible and portable solar photovoltaic modules. Background Technology

[0002] With the continuous development of outdoor mobile power supplies, emergency power supply equipment, and portable power terminals, solar modules are gradually moving towards lightweight, foldable, and portable designs. Compared to traditional rigid photovoltaic panels, flexible photovoltaic modules are lighter, can be bent and stored, and can adapt to complex usage environments. They are now being used in camping, vehicle auxiliary power supply, field operations, and temporary energy replenishment scenarios.

[0003] Existing flexible photovoltaic modules typically employ folded panel splicing, roll-up storage, or direct roll-up storage of flexible sheets. During use, they usually require manual unfolding and placement on the ground, vehicle roof, or support surface, then maintained in their unfolded state using simple corner clamps, ropes, or external supports. Furthermore, some technical solutions attempt to add motor reels or mechanical transmission mechanisms to improve storage convenience; however, these structures are generally geared towards a single winding action, offering limited improvement in support during the unfolding phase. Moreover, the overall mechanism is relatively complex, increasing weight and size, which is detrimental to portable use. Meanwhile, some products still require external power for drive control in outdoor scenarios, limiting the device's independence.

[0004] Therefore, how to ensure that flexible photovoltaic modules can obtain stable support and improve the flatness of the unfolding process while maintaining the overall structure as lightweight and easy to carry, and at the same time take into account the smoothness of the storage process and a certain degree of self-driving capability, remains a technical problem that urgently needs to be improved in this field. Summary of the Invention

[0005] This invention aims to solve the technical problems of existing flexible photovoltaic modules, such as reliance on manual unfolding and folding during use, insufficient support in the unfolded state leading to wrinkles, and unsmooth folding process with low automation. It provides a flexible portable solar photovoltaic module with a simple structure, flat and stable unfolding, and automatic unfolding and folding control.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a flexible portable solar photovoltaic module, comprising a flexible photovoltaic panel, a storage box assembly, a memory frame assembly, and an air-expansion assembly. A plurality of memory frame assemblies are arranged parallel to each other on both sides of the flexible photovoltaic panel. Each memory frame assembly includes a rubber-coated strip and a plurality of shape memory alloy strips embedded within the rubber-coated strip. The storage box assembly includes two rotatably connected boxes, with an air pump box and a power control box respectively located at the bottom of the two boxes. One end of each memory frame assembly and the flexible photovoltaic panel is movably mounted inside the box assembly. The air-expansion assembly includes a plurality of airbags fixed to one side of the flexible photovoltaic panel and the memory frame assembly, and rubber air tubes for communication between the airbags. The plurality of airbags are arranged adjacent to each other along the surface of the flexible photovoltaic panel, and adjacent airbags are movably connected by hinge connectors.

[0007] Through the above structure, the airbag is inflated during the unfolding process to form a planar support structure, thereby driving the flexible photovoltaic panel to unfold flat; during the storage process, the shape memory alloy strip restores the preset shape to generate a curling driving force, thereby achieving automatic winding, thus forming a working system in which unfolding and storage work together, with a simple structure and a high degree of automation.

[0008] In a preferred embodiment, the present invention can be further configured as follows: the shape memory alloy strip is a nickel-titanium alloy shape memory metal strip structure, the shape memory alloy strip has a preset shape memory, the preset shape memory is a planar spiral structure, the shape memory alloy strip recovers to the preset shape memory under the action of electric heating, and is in a bendable martensitic state in the non-heated state, a plurality of the shape memory alloy strips are evenly and parallel to each other arranged inside the rubber-coated strip, and the rubber-coated strip is provided with fixing wings on both sides for connecting and fixing to the edge of the flexible photovoltaic panel.

[0009] Through the above settings, the shape memory alloy strip generates a stable curling driving force when energized, and transmits this driving force to the flexible photovoltaic panel through the rubber-coated strip to achieve the storage action. At the same time, it has good flexibility when not energized, which facilitates deformation and coordination during the unfolding process.

[0010] In a preferred embodiment, the present invention may be further configured such that: the power control box integrates an energy storage power supply and an energy conversion circuit for electrical connection with the output terminal of the flexible photovoltaic panel, the energy storage power supply being used to provide power input to the shape memory alloy strip and the air pump box.

[0011] With the above setup, energy can be stored by generating electricity using flexible photovoltaic panels, and energy can be provided for the inflation and deflation of airbags and the heating of shape memory alloy strips, thereby enabling the system to operate self-powered and improving its overall independence and practicality.

[0012] In a preferred embodiment, the present invention can be further configured such that: the air pump box is provided with an air pump structure and an air path switching structure, and a plurality of airbags are connected in series or in parallel through the rubber air tubes, and one end of the rubber air tubes is connected to the air pump port through the air path switching structure.

[0013] The above settings enable the inflation and deflation switching control of the airbag body, allowing the air-expanding components to quickly switch between the deployed and retracted states, thereby improving the automation level and control reliability of the overall structure.

[0014] In a preferred embodiment, the present invention can be further configured such that: one end of the two boxes is hinged to each other, and the other end is provided with a handle and a locking device; a connecting plate is rotatably installed on the inner side of the box, and one end of the connecting plate is movably connected to the surface of the airbag near the side of the box.

[0015] With the above settings, during the manual closing of the box, the linkage plate can guide and introduce the flexible photovoltaic panel, memory frame assembly, and air-expansion component, allowing them to smoothly enter the storage cavity, thereby improving the smoothness of the storage process.

[0016] In a preferred embodiment, the present invention may be further configured such that each of the airbags is a cylindrical structure and its length is equal to the width of the flexible photovoltaic panel, and the inner side of the box is provided with a storage cavity adapted to the size of the airbags and the flexible photovoltaic panel.

[0017] The above configuration enables the airbag to form a continuous support structure when deployed, and it can be integrated with the flexible photovoltaic panel for storage, thus improving the structural compactness.

[0018] In a preferred embodiment, the invention may be further configured such that the airbag body is made of a non-elastic sealing material and has an internal limiting structure for limiting the maximum expansion size.

[0019] The above settings enable the airbag to form a stable support structure after inflation and prevent excessive bulging, while it can flatten and thin after deflation, thereby reducing the obstruction to the winding process.

[0020] In a preferred embodiment, the present invention may be further configured such that: the rubber-coated strip has an embedded groove structure extending along the length direction inside, the shape memory alloy strip is embedded in the embedded groove structure, and the opening of the embedded groove structure is provided with a sealing layer.

[0021] The above settings can stably limit the shape memory alloy strip, preventing it from shifting or coming off during repeated deformation, thus improving structural reliability.

[0022] In a preferred embodiment, the present invention may be further configured such that the rubber-coated strip is a multi-layer composite structure, including an outer elastic protective layer and an inner thermally conductive layer.

[0023] With the above configuration, the heat-conducting layer can improve the heating response efficiency of the shape memory alloy strip, thereby shortening the storage response time, while the outer elastic protective layer can improve the overall durability.

[0024] The beneficial effects achieved by this invention are as follows: 1. In this invention, by setting up a collaborative structure of air-expanding components and memory frame groups, the airbags are gradually inflated during the unfolding phase to form a continuous support surface, which drives the flexible photovoltaic panel to unfold synchronously. Compared with the traditional method of relying on manual stretching or simple support rods, the unfolding action is more stable, and the panel is less likely to have local curling, wrinkles, or uneven stress. It can keep the light-receiving surface in a better flat state, thereby improving the actual light-gathering efficiency and usage stability.

[0025] 2. In this invention, by setting shape memory alloy strips inside the memory frame assembly, the shape recovery characteristics after being energized are used to generate active curling traction force during the storage stage, so that the flexible photovoltaic panel automatically rolls back and retracts after the airbag body is deflated, without the need for an additional rolling mechanism or a lot of manual operation, making the overall storage process smoother.

[0026] 3. In this invention, by setting up a box, a connecting plate and an adaptable storage cavity, the flexible photovoltaic panel, memory frame group and air-expansion component can be guided and organized when closed and stored, so that each component enters the box according to a preset path, reducing folding jamming, misalignment and stacking and local compression. The overall structure after storage is more compact and portable. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention; Figure 2 This is a schematic diagram of the rear structure of an embodiment of the present invention; Figure 3 This is a top view of one embodiment of the present invention; Figure 4 This is a schematic diagram of the curled state structure of a memory frame assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a storage box assembly structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the storage state according to an embodiment of the present invention; Figure 7 This is a partial cross-sectional structural diagram of a memory frame assembly according to an embodiment of the present invention.

[0028] Figure label: 100. Flexible photovoltaic panels; 200. Storage box assembly; 210. Box body; 220. Air pump box; 230. Power control box; 211. Handle; 212. Connecting plate; 300. Memory frame assembly; 310. Rubber-coated strip; 320. Shape memory alloy strip; 311. Fixed wing; 400. Air-propelled assembly; 410. Airbag body; 420. Rubber air tube; 411. Hinge connector. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0030] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0031] The following describes, with reference to the accompanying drawings, some embodiments of the flexible portable solar photovoltaic module provided by the present invention.

[0032] Combination Figures 1 to 7 As shown, the flexible portable solar photovoltaic module provided by the present invention includes a flexible photovoltaic panel 100, a storage box assembly 200, a memory frame assembly 300, and an air-expansion component 400. Several memory frame assemblies 300 are arranged parallel to each other on both sides of the flexible photovoltaic panel 100. Each memory frame assembly 300 includes a rubber-coated strip 310 and several shape memory alloy strips 320 embedded within the rubber-coated strip 310. The storage box assembly 200 includes two rotatably connected box bodies 210. The bottom ends of the two box bodies 210 are respectively provided with an air pump box 220 and a power control unit. The box 230, the memory frame assembly 300, and the flexible photovoltaic panel 100 are all movably installed inside the box 210. The air-expansion assembly 400 includes several airbags 410 fixed to one side of the flexible photovoltaic panel 100 and the memory frame assembly 300, and rubber air tubes 420 for connecting the various airbags 410. The airbags 410 are arranged adjacent to each other along the surface of the flexible photovoltaic panel 100, and the adjacent airbags 410 are movably connected by hinge connectors 411. The above structure forms a collaborative working system of "airbag expansion + shape memory roll-up".

[0033] like Figure 4 and 7As shown, the shape memory alloy strip 320 is a nickel-titanium alloy shape memory metal strip structure with a preset shape memory. The preset shape memory is a planar spiral structure with the spiral axis parallel to the axis of each airbag 410. Multiple shape memory alloy strips 320 are arranged parallel to each other. When the shape memory alloy strip 320 is heated by electricity, it recovers to the planar spiral structure. In the non-heated state, it is in a bendable martensitic state. Several shape memory alloy strips 320 are evenly and parallelly arranged inside the rubber covering strip 310. The rubber covering strip 310 flexibly encapsulates and transmits force to the shape memory alloy strip 320. Fixed wings 311 are provided on both sides of the rubber covering strip 310. The fixed wings 311 are used to connect and fix with the edge of the flexible photovoltaic panel 100, so that the shape memory alloy strip 320 can generate a stable curling traction effect on the flexible photovoltaic panel 100 during the recovery process.

[0034] In this embodiment, the power control box 230 integrates an energy storage power supply and an energy conversion circuit. The energy conversion circuit is electrically connected to the output terminal of the flexible photovoltaic panel 100 and is used to convert photovoltaic power generation and store it in the energy storage power supply. The energy storage power supply is used to provide power input to the shape memory alloy strip 320 and the air pump box 220, thereby realizing the self-powered drive of the system and improving the independent use capability of the device.

[0035] In this embodiment, the air pump box 220 is equipped with an air pump structure and an air path switching structure. Several airbags 410 are connected in series or in parallel through rubber air tubes 420. One end of the rubber air tube 420 is connected to the air pump port through the air path switching structure. The air path switching structure can realize the inflation or deflation switching control of the airbags 410, so that the air deployment component 400 can switch between the deployed state and the retracted state.

[0036] like Figure 5 As shown, one end of the two boxes 210 is hinged to each other, and the other end is provided with a handle 211 and a locking device for easy carrying and locking. A connecting plate 212 is rotatably installed on the inner side of the box 210. One end of the connecting plate 212 is movably connected to the surface of the airbag 410 near the side of the box 210. The connecting plate 212 is used to guide the flexible photovoltaic panel 100, the memory frame group 300 and the air-expansion component 400 into the storage cavity inside the box 210 when the box 210 is manually closed, thereby improving the smoothness of the storage process.

[0037] like Figure 2 and 3As shown, each airbag 410 has a cylindrical structure and its length is equal to the width of the flexible photovoltaic panel 100. The inner side of the box 210 is provided with a storage cavity that is adapted to the size of the airbag 410 and the flexible photovoltaic panel 100, so that the unfolded components can be stored inside the box 210 as a whole. The airbag 410 is made of non-elastic sealing material and has a limiting structure inside to limit the maximum expansion size. In the inflated state, it prevents excessive expansion and forms a stable support structure. In the deflated state, the airbag 410 is in a flat and contracted state to reduce the thickness and reduce the obstruction to the roll-up storage.

[0038] like Figure 7 As shown, the rubber-coated strip 310 has a groove structure extending along its length inside, and the shape memory alloy strip 320 is embedded in the groove structure. The opening of the groove structure is provided with a sealing layer to limit and fix the shape memory alloy strip 320 and prevent it from falling out. The rubber-coated strip 310 is a multi-layer composite structure, including an outer elastic protective layer and an inner heat-conducting layer. The heat-conducting layer is used to improve the heating efficiency of the shape memory alloy strip 320, thereby improving its response speed.

[0039] Working principle and usage process of this invention: During the unfolding process, first place the storage box assembly 200 in the usage position in its folded state. By unlocking the locking fasteners between the two boxes 210 and unfolding them to the sides, the flexible photovoltaic panel 100, the memory frame assembly 300, and the air-expansion component 400 are gradually released from the inside of the box 210. In the initial unfolding stage, the connecting plate 212 rotates with the box 210, causing the airbag 410 near the box to rotate and guide it, thereby guiding each airbag 410 and the flexible photovoltaic panel 100 to unfold smoothly along the preset path, avoiding folding, jamming, or misalignment.

[0040] Subsequently, the air pump structure inside the air pump box 220 is activated. Under the control of the air path switching structure, gas is delivered to the interior of each airbag 410 through the rubber air tube 420. Each airbag 410 is inflated and expanded in sequence. As the diameter of the airbag 410 gradually decreases along the direction away from the box 210, a progressively unfolding thrust distribution is formed during the inflation process, thereby driving the flexible photovoltaic panel 100 to gradually unfold along the length direction and tend to flatten. At the same time, adjacent airbags 410 are flexibly connected by hinge connectors 411, so that the overall unfolding process has good continuity and stability.

[0041] After the airbags 410 reach the set expansion state, they form a stable support structure, thereby providing support for the flexible photovoltaic panel 100 and maintaining its unfolded working form. At this time, the flexible photovoltaic panel 100 can convert light energy into electricity. The electricity is output and used through an external interface, and can also be stored in the energy storage power supply through the power conversion circuit inside the power control box 230 for use in the subsequent storage process.

[0042] During the storage process, the gas is first switched to the exhaust state through the gas path switching structure, so that the gas inside the airbag 410 is discharged through the rubber air tube 420. As the gas is gradually released, the volume of each airbag 410 decreases and loses its supporting function, so that the flexible photovoltaic panel 100 enters a flexible and deformable state.

[0043] Subsequently, the power control box 230 supplies electricity to heat the shape memory alloy strip 320, causing it to change from a martensitic state to an austenitic state and return to the preset planar spiral shape. During this recovery process, several shape memory alloy strips 320 generate contraction and curling driving forces, which are transmitted to the edge of the flexible photovoltaic panel 100 through the rubber covering strip 310, thereby pulling the flexible photovoltaic panel 100 to gradually curl and be stored in the direction of the box 210.

[0044] After the flexible photovoltaic panel 100, the memory frame assembly 300 and the air-expansion component 400 are completely stored inside the box 210, the power supply to the shape memory alloy strip 320 is stopped, allowing it to gradually cool and return to the martensitic state. At this time, the overall structure maintains the curled storage shape. Finally, the two boxes 210 are manually closed and locked with the fasteners to complete the entire storage process.

[0045] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flexible and portable solar photovoltaic module, characterized in that, include: Flexible photovoltaic panel (100); The storage box assembly (200) includes two boxes (210) that are rotatably connected to each other, and the bottom ends of the two boxes (210) are respectively provided with an air pump box (220) and a power control box (230). Memory frame groups (300), several memory frame groups (300) are arranged in parallel to each other on both sides of the flexible photovoltaic panel (100); An air-spreading component (400) includes several airbags (410) fixed to one side of the flexible photovoltaic panel (100) and the memory frame group (300), and rubber air tubes (420) for connecting each of the airbags (410). The several airbags (410) are arranged adjacent to each other along the surface of the flexible photovoltaic panel (100). Both the memory frame group (300) and the flexible photovoltaic panel (100) are movably installed on one end inside the box body (210).

2. The flexible portable solar photovoltaic module according to claim 1, characterized in that, The memory frame assembly (300) includes a rubber-coated strip (310) and a plurality of shape memory alloy strips (320) embedded in the inner side of the rubber-coated strip (310). The rubber-coated strip (310) has fixed wings (311) on both sides for connecting and fixing to the edge of the flexible photovoltaic panel (100).

3. The flexible portable solar photovoltaic module according to claim 2, characterized in that, The shape memory alloy strip (320) is a nickel-titanium alloy shape memory metal strip structure. The shape memory alloy strip (320) has a preset shape memory form, which is a planar spiral structure. The shape memory alloy strip (320) recovers to the preset shape memory form under the action of electric heating. In the non-heated state, it is in a bendable martensitic state. Several shape memory alloy strips (320) are evenly and parallel to each other arranged inside the rubber-coated strip (310).

4. The flexible portable solar photovoltaic module according to claim 1, characterized in that, The rubber-coated strip (310) has a multi-layer composite structure, including an outer elastic protective layer and an inner thermally conductive layer.

5. The flexible portable solar photovoltaic module according to claim 1, characterized in that, The power control box (230) integrates an energy storage power supply and an energy conversion circuit for electrical connection with the output terminal of the flexible photovoltaic panel (100).

6. The flexible portable solar photovoltaic module according to claim 1, characterized in that, The diameter of each airbag (410) gradually decreases along the direction away from the box body (210), and adjacent airbags (410) are movably connected by hinge connectors (411).

7. The flexible portable solar photovoltaic module according to claim 1, characterized in that, The air pump box (220) is equipped with an air pump structure and an air path switching structure. Several airbags (410) are connected in series or in parallel through the rubber air tube (420). One end of the rubber air tube (420) is connected to the air pump port through the air path switching structure.

8. The flexible portable solar photovoltaic module according to claim 1, characterized in that, The two boxes (210) are hinged to each other at one end, and the other end is provided with a handle (211) and a locking device. A connecting plate (212) is rotatably installed on the inner side of the box (210), and one end of the connecting plate (212) is movably connected to the surface of the airbag (410) near the side of the box (210).

9. The flexible portable solar photovoltaic module according to claim 1, characterized in that, Each of the airbags (410) is cylindrical and its length is equal to the width of the flexible photovoltaic panel (100). The inner side of the box (210) is provided with a storage cavity that is adapted to the size of the airbags (410) and the flexible photovoltaic panel (100).

10. The flexible portable solar photovoltaic module according to claim 1, characterized in that, The airbag body (410) is made of a non-elastic sealing material and has an internal limiting structure to limit the maximum expansion size in order to prevent excessive inflation when inflated.

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