A foldable photovoltaic rack and a storable photovoltaic energy storage station comprising the same

Abstract

This invention belongs to the field of photovoltaic technology, specifically relating to a foldable photovoltaic frame and a retractable photovoltaic energy storage station including the same. The foldable photovoltaic frame includes a photovoltaic panel, a bottom frame, a top frame for placing the photovoltaic panel, and a support frame. The support frame includes a main frame and an auxiliary frame, with a tensionable connecting mechanism between them. The main frame includes an upper and a lower part that are hinged to each other. The upper end of the upper part of the main frame is connected to the side of the top frame, and the lower end of the lower part of the main frame is connected to the side of the bottom frame. The auxiliary frame includes an upper and a lower part that are hinged to each other. The upper end of the upper part of the auxiliary frame is hinged to the upper part of the main frame, and the lower end of the lower part of the auxiliary frame is hinged to the lower part of the main frame. One end of the connecting mechanism is located at the hinge point between the upper and lower parts of the main frame, and the other end is located at the hinge point between the upper and lower parts of the auxiliary frame. This invention has a large illumination area, is easy to store and carry, can be quickly deployed in outdoor environments, and is suitable for various harsh outdoor environments.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic technology, and more specifically, relates to a foldable photovoltaic frame and a retractable photovoltaic energy storage station including the same. Background Technology

[0002] Currently, energy storage stations are generally constructed on planned plots of land, requiring investment in civil engineering costs. The construction process involves transporting and landing large components such as containers, refrigeration units, battery cell stacks, photovoltaic panels, and support structures, making the installation process quite complex. Photovoltaic energy storage stations typically separate the photovoltaic panel array from the energy storage facilities, requiring additional land or building resources. Photovoltaic arrays with fixed supports require a stable foundation, while energy storage facilities are usually housed in cabinets or buildings, combined with converters, transformers, switchgear, controllers, and security equipment. Once deployed, they become fixed assets and are not easily moved. Currently, photovoltaic energy storage stations are developing towards large-scale and high-capacity applications, serving residential communities, electric vehicle charging stations, and public service facilities. This means that energy storage stations under construction are mainly geared towards urban applications and require more open, flat land, a larger number of energy storage carriers, and grid integration.

[0003] In some areas where there are poor civil engineering conditions and limited ground and above-ground space, such as mountainous areas, valleys, and tidal flats, there is a demand for photovoltaic energy storage, but it is not convenient to build large and medium-sized energy storage bases on a large scale. In some field environments where special operations are carried out, there is only a short-term demand for energy storage and consumption, and people tend to use clean photovoltaic resources, but the power capacity is not large, the cost of building fixed energy storage stations is too high, and the utilization rate of energy storage stations is low.

[0004] Therefore, existing energy storage sites are not suitable for these application scenarios, cannot be deployed quickly, and are difficult to relocate when the environment changes. Summary of the Invention

[0005] The present invention aims to overcome at least one of the shortcomings of the prior art and provide a foldable photovoltaic frame and a retractable photovoltaic energy storage station including the frame, in order to overcome the problem of the narrow applicability of existing energy storage stations.

[0006] One objective of this invention is to provide a foldable photovoltaic frame, comprising a photovoltaic panel, a bottom frame, a top frame for placing the photovoltaic panel, and a support frame. The support frame is height-adjustable and includes a main frame and an auxiliary frame, with a tensionable connecting mechanism between the main frame and the auxiliary frame. The main frame includes an upper part and a lower part that are hinged to each other. The upper end of the upper part of the main frame is connected to the side of the top frame, and the lower end of the lower part of the main frame is connected to the side of the bottom frame. The auxiliary frame includes an upper part and a lower part that are hinged to each other. The upper end of the upper part of the auxiliary frame is hinged to the upper part of the main frame, and the lower end of the lower part of the auxiliary frame is hinged to the lower part of the main frame. One end of the connecting mechanism is located at the hinge between the upper and lower parts of the main frame, and the other end of the connecting mechanism is located at the hinge between the upper and lower parts of the auxiliary frame.

[0007] An adjustable-height support frame connects the top and bottom frames. The support frame consists of a main frame and an auxiliary frame, connected by a tensionable mechanism. Adjusting the distance between the hinge points of the main and auxiliary frames via this mechanism allows the main and auxiliary frames to fold downwards or upwards, thereby lowering or raising the height of the support frame and achieving a foldable photovoltaic system.

[0008] Furthermore, the main frame also includes a first hinge device. The upper part of the main frame includes an upper support rod, and the lower part of the main frame includes a lower support rod. The tail end of the upper support rod and the head end of the lower support rod are respectively hinged to the first hinge device and rotate relative to the first hinge device. The upper support rod is connected to the side of the top frame, and the lower support rod is connected to the side of the bottom frame.

[0009] The auxiliary frame also includes a second hinge device. The upper part of the auxiliary frame includes an upper auxiliary support rod, and the lower part of the auxiliary frame includes a lower auxiliary support rod. The tail end of the upper auxiliary support rod and the head end of the lower auxiliary support rod are respectively hinged to the second hinge device and rotate relative to the second hinge device. The upper auxiliary support rod is hinged to the upper support rod, and the lower auxiliary support rod is hinged to the lower support rod. A connecting mechanism is provided between the first hinge device and the second hinge device.

[0010] The auxiliary upper and lower support rods are respectively hinged to the second hinge device and are rotatable relative to the second hinge device. The first and second hinge devices are arranged opposite each other. When the height needs to be lowered, the distance between the first and second hinge devices is increased through the connecting mechanism, and the support frame is pressed down, causing the upper and lower support rods and auxiliary upper and lower support rods to fold downward, thereby reducing the height of the support frame and achieving a folding effect. When the height needs to be increased, the distance between the first and second hinge devices is decreased through the connecting mechanism, causing the upper and lower support rods and auxiliary upper and lower support rods to fold upward, thereby increasing the height of the support frame. The height of the support frame is adjustable, and due to the action of the connecting mechanism, the support frame can be fixed at a certain height without external force, making it suitable for various application scenarios.

[0011] Furthermore, it also includes a first connector, one end of which is hinged to an upper support rod and the other end of which is hinged to an auxiliary upper support rod; and / or, it also includes a second connector, one end of which is hinged to a lower support rod and the other end of which is hinged to an auxiliary lower support rod.

[0012] The auxiliary upper support rod is set on the upper support rod, and the auxiliary lower support rod is set on the lower support rod. During the process of adjusting the height of the support frame, the auxiliary upper and lower support rods need to rotate relative to the upper and lower support rods. A connector is set at the connection between the two to reduce wear during relative rotation, increase service life, and also make the connection between the two more stable.

[0013] Furthermore, the top frame includes a first fixed frame and a first telescopic frame. One end of the first telescopic frame is connected to the first fixed frame, and the other end is connected to the upper part of the main frame. One end of the photovoltaic panel on the top frame is mounted on the first telescopic frame so as to follow the telescopic movement of the first telescopic frame.

[0014] The bottom frame includes a second fixed frame and a second telescopic frame. The length of the second telescopic frame is adjustable. One end of the second telescopic frame is connected to the second fixed frame, and the other end is connected to the lower part of the main frame.

[0015] The telescopic section is located on the left and right sides of the fixed frame. The photovoltaic panels are installed on the fixed frame and the telescopic frame. When using the photovoltaic frame, pull the telescopic frame outward to unfold the photovoltaic panels installed on the telescopic frame and increase the photovoltaic area. When storing the photovoltaic frame, push the telescopic frame towards the fixed frame to the compressed state for easy storage.

[0016] Furthermore, the telescopic frame includes a telescopic rod and a side rod. One end of the telescopic rod is connected to one side of the fixed frame, and the other end is connected to the side rod. The telescopic rod can extend and retract relative to the fixed frame, and one end of the photovoltaic panel is mounted on the side rod.

[0017] The telescopic pole moves in and out relative to the fixed frame, causing one end of the photovoltaic panel mounted on the side pole to move in and out, thereby increasing or decreasing the area of ​​the photovoltaic panel.

[0018] Furthermore, the photovoltaic panels installed on the top frame are flexible photovoltaic panels, and a winding mechanism is installed on the side rods, with one end of the flexible photovoltaic panel attached to the winding mechanism.

[0019] The flexible photovoltaic panel is mounted on a winding mechanism on both sides. The winding mechanism moves with the telescopic frame. When storing the photovoltaic panel, the winding mechanism rotates to roll up the photovoltaic panel, preventing damage caused by repeated folding.

[0020] The second objective of this invention is to provide a retractable photovoltaic energy storage station, comprising a main unit, at least one extended unit, and an energy storage box; both the main unit and the extended unit are foldable photovoltaic frames, the foldable photovoltaic frame comprising two support frames, the two support frames being arranged opposite to each other along a first direction, and an installation space being formed between the top frame and the bottom frame of the foldable photovoltaic frame;

[0021] The main unit has at least one extended unit on each side along the second direction, which is perpendicular to the first direction. The height of the extended unit is lower than that of the main unit. The height of the extended units decreases from the middle to both sides. The main unit and the extended units, as well as the extended units themselves, are connected by a linkage mechanism. The linkage mechanism is used to retract the extended units toward the main unit or release them toward both sides of the main unit. When the extended units are released toward both sides of the main unit, the several installation spaces are connected to form the installation cavity of the photovoltaic energy storage station. The energy storage box is installed in the installation cavity and is used to store the electrical energy generated by the photovoltaic panels.

[0022] This invention provides a retractable photovoltaic energy storage station. The main body is a compressible and foldable canopy, composed of a main unit and several outwardly extending units arranged sequentially. The middle unit and the extending units, as well as the extending units themselves, are connected by a linkage mechanism. Flexible photovoltaic panels are installed on the roof, with one end of each panel mounted on a winding mechanism connected to a telescopic frame. Initially compressed, the telescopic frame unfolds in the width direction. The outward stretching motion of the telescopic frame drives the winding mechanism to rotate, causing the flexible photovoltaic panels mounted on the winding mechanism to extend, increasing the light-receiving area. In the length direction, several extending units are stacked below the main unit. When unfolded, these extending units are pushed outward from below the main unit, ensuring each unit is fully unfolded, allowing the photovoltaic panels of these extending units to receive sunlight and increasing the light-receiving area. When unfolded, several installation spaces connect to form an installation cavity for the photovoltaic energy storage station, within which the energy storage box is installed. Both sides of the support frame are height-adjustable, allowing the height of the support frame to be adjusted according to the sunlight conditions of the site, so that the two support frames form a certain height difference, and the photovoltaic panels installed on the photovoltaic frame form a certain angle, increasing the light-receiving area.

[0023] Furthermore, the main unit and the extension unit are connected by at least two connecting mechanisms, and the extension units are connected to each other. The connecting mechanisms include a first connecting mechanism and a second connecting mechanism. The upper end of the first connecting mechanism is located on the side of the top frame, and the lower end is connected to the upper part of the main frame. The upper end of the second connecting mechanism is located on the side of the bottom frame, and the lower end extends toward the lower side of the bottom frame.

[0024] The first connecting mechanism includes a top side frame, a slide groove, and a slider. The slide groove is set on the top side frame of the main unit and each extended unit. One end of the slider is set inside the slide groove, and the other end is slidably set in the slide groove of the adjacent extended unit. The upper end of the top side frame is connected to the side of the top frame, and the lower end is connected to the upper part of the main frame.

[0025] The second connecting mechanism includes a bottom side frame, a slide groove, and a slider. The slide groove is set on the bottom side frame of the main unit and each extended unit. One end of the slider is set inside the slide groove, and the other end is slidably set in the slide groove of the adjacent extended unit. The upper end of the bottom side frame is connected to the side of the bottom frame.

[0026] One end of the slider is mounted on the slide groove and slides along the inner wall of the groove. One end of the side frame is mounted on the top side rod. When multiple units are connected, the slider is embedded in adjacent slide grooves, allowing adjacent photovoltaic frames to slide along the grooves. Preferably, both ends of the slide groove are closed, which limits the slider mounted in the groove. The top and bottom side frames have a certain length downwards, providing storage height for the extended units, facilitating the storage of the photovoltaic station.

[0027] Furthermore, it also includes side photovoltaic panels, which are mounted on the top side frame.

[0028] The side photovoltaic panels are installed on the top side frame. When in use, the side photovoltaic panels are flipped outwards and laid flat to increase the photovoltaic area.

[0029] Furthermore, it also includes a cleaning strip, the upper end of which is set on the lower surface of the top frame, and the height of the cleaning strip does not exceed the height difference between adjacent units.

[0030] The cleaning strips are installed on the lower surface of the top frame. During the retraction of adjacent extended units, the cleaning strips can scrape off the dust accumulated on the lower photovoltaic panels, while also serving as a buffer to reduce the damage to the photovoltaic panels.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] 1. The photovoltaic energy storage station designed in this invention is a foldable canopy with compressed height, length, and width, making it easy to store and carry. It can be quickly deployed in outdoor environments and is suitable for various occasions, including rugged terrain. In areas far from urban power grids and in field camps, it can utilize solar energy to store electrical energy for production and daily life needs with low investment, facilitating some field operations and reducing the consumption of fossil fuels.

[0033] 2. When encountering unfavorable weather conditions or needing to relocate the work site, the entire set of equipment of this invention can quickly change from the working state to the storage state, and the volume occupied is much smaller than that of existing photovoltaic energy storage stations of the same capacity, making it convenient to transfer, store or transport.

[0034] 3. The support frame of the present invention that supports the height of the shed can be adjusted as needed. The height difference between the two sides can be adjusted to form a certain height difference, so that the photovoltaic panels at the top can be formed at a certain angle to adapt to the angle of sunlight incidence, thereby obtaining a longer sunshine duration and increasing photovoltaic power generation.

[0035] 4. The present invention sets up a side photovoltaic panel, which increases the photovoltaic area on the basis of the original top photovoltaic panel, thereby increasing the overall light-receiving area and the amount of solar power generated.

[0036] 5. The present invention provides a cleaning felt strip on the lower surface of the top frame. During the retraction of adjacent extended units, the cleaning felt strip can scrape off the dust accumulated on the lower photovoltaic panel, and at the same time, it can also play a buffering and protective role, reducing the damage of the photovoltaic panel. Attached Figure Description

[0037] Figure 1 This is a partial structural schematic diagram of the photovoltaic frame according to Embodiment 1 of the present invention.

[0038] Figure 2 This is a schematic diagram of the support frame according to Embodiment 1 of the present invention.

[0039] Figure 3 This is a partial structural diagram of two adjacent protruding units in Embodiment 1 of the present invention.

[0040] Figure 4 This is a partial structural diagram of Embodiment 1 of the present invention.

[0041] Figure 5 This is a partial structural diagram of the bottom frame of Embodiment 1 of the present invention.

[0042] Figure 6 This is a schematic diagram of the unfolded usage state of Embodiment 2 of the present invention.

[0043] Figure 7 This is a schematic diagram of the internal structure in the unfolded state of Embodiment 2 of the present invention.

[0044] Figure 8 This is a cross-sectional view of the extended unit in the folded state according to Embodiment 2 of the present invention.

[0045] Marking Explanation: 101-Top Fixing Frame, 102-Bottom Fixing Frame, 201-Top Telescopic Frame, 202-Bottom Telescopic Frame, 3-Top Side Frame, 4-Side Photovoltaic Panel, 5-Support Frame, 501-Upper Support Rod, 502-Lower Support Rod, 503-Auxiliary Upper Support Rod, 504-Auxiliary Lower Support Rod, 505-First Hinge Device, 506-Wire Take-up Device, 507-Wire Rope, 508-Second Hinge Device, 509-First Connector, 510- Second connector, 6-Structural stabilizing rod, 7-Bottom side frame, 8-Cast, 9-Connecting mechanism, 901-Slider, 902-Slide groove, 10-Roller, 11-Flexible photovoltaic panel, 12-Pressure roller, 13-Cleaning felt strip, 14-Flat plate, 15-Additional plate, 16-Transition plate, 17-Lightweight panel assembly, 18-Side photovoltaic panel stabilizing rod, 19-Ventilator, 20-Air guide component, 21-Energy storage box, 22-Transmission box, 23-Control box. Detailed Implementation

[0046] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention. To better illustrate the following embodiments, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0047] Example 1

[0048] A foldable photovoltaic frame includes a photovoltaic panel 11, a bottom frame, a top frame for placing the photovoltaic panel 11, and a support frame. When the number of support frames 5 is set to one, the support frame 5 includes a main frame and an auxiliary frame, and a tensionable connection mechanism is provided between the main frame and the auxiliary frame. The main frame includes an upper part and a lower part that are hinged to each other. The upper end of the upper part of the main frame is connected to the side of the top frame, and the lower end of the lower part of the main frame is connected to the side of the bottom frame. The auxiliary frame includes an upper part and a lower part that are hinged to each other. The upper end of the upper part of the auxiliary frame is hinged to the upper part of the main frame, and the lower end of the lower part of the auxiliary frame is hinged to the lower part of the main frame. One end of the connection mechanism is located at the hinge between the upper and lower parts of the main frame, and the other end of the connection mechanism is located at the hinge between the upper and lower parts of the auxiliary frame.

[0049] The height-adjustable support frame connects the top frame and the bottom frame. The support frame consists of a main frame and an auxiliary frame. A tensionable connecting mechanism is provided between the main frame and the auxiliary frame. By adjusting the distance between the hinge points of the main frame and the auxiliary frame through the connecting mechanism, the main frame and the auxiliary frame can be folded downwards or upwards, thereby reducing or increasing the height of the support frame and making the photovoltaic frame foldable.

[0050] This embodiment provides a foldable photovoltaic frame, such as Figure 1As shown, the system includes a photovoltaic panel 11, a bottom frame, a top frame for placing the photovoltaic panel, and two support frames 5. The support frames 5 are height-adjustable and include a main frame and an auxiliary frame. A tensionable connection mechanism is provided between the main frame and the auxiliary frame. The main frame includes an upper part and a lower part that are hinged to each other. The upper end of the upper part of the main frame is connected to the side of the top frame, and the lower end of the lower part of the main frame is connected to the side of the bottom frame. The auxiliary frame includes an upper part and a lower part that are hinged to each other. The upper end of the upper part of the auxiliary frame is hinged to the upper part of the main frame, and the lower end of the lower part of the auxiliary frame is hinged to the lower part of the main frame. One end of the connection mechanism is located at the hinge between the upper and lower parts of the main frame, and the other end of the connection mechanism is located at the hinge between the upper and lower parts of the auxiliary frame.

[0051] The height-adjustable support frame 5 is set on both sides of the top frame and the bottom frame, connecting the top frame and the bottom frame. The support frame 5 consists of a main frame and an auxiliary frame. A telescopic connecting mechanism is set between the main frame and the auxiliary frame. By adjusting the distance between the main frame and the auxiliary frame through the connecting mechanism, the main frame and the auxiliary frame can be folded downward, thereby reducing the height of the support frame 5 and making the photovoltaic frame foldable. The height of the support frames 5 on both sides is adjustable. The height of the support frames 5 on both sides can be adjusted according to the sunlight conditions of the site, so that the flexible photovoltaic panels 11 set on the photovoltaic frame form a certain angle and increase the light-receiving area.

[0052] like Figure 2 As shown, the main frame includes an upper support rod 501, a lower support rod 502, and a first hinge device 505. The tail end of the upper support rod 501 and the head end of the lower support rod 502 are respectively hinged to the inner plane of the first hinge device 505. The upper support rod 501 and the lower support rod 502 can rotate inward and outward relative to the first hinge device 505. The upper support rod 501 is connected to the side of the top frame, and the lower support rod 502 is connected to the side of the bottom frame.

[0053] The auxiliary frame includes an upper auxiliary support rod 503, a lower auxiliary support rod 504, and a second hinge device 508. The tail end of the upper auxiliary support rod 503 and the head end of the lower auxiliary support rod 504 are respectively hinged to the inner plane of the second hinge device 508. The first hinge device 505 and the second hinge device 508 are arranged opposite to each other. The upper auxiliary support rod 503 and the lower auxiliary support rod 504 can rotate relative to the second hinge device. The upper auxiliary support rod 503 is hinged to the upper support rod 501, and the lower auxiliary support rod 504 is hinged to the lower support rod 502. A connecting mechanism is provided between the first hinge device 505 and the second hinge device 508.

[0054] Preferably, it further includes a first connector 509, one end of which is hinged to an upper support rod 501 and the other end of which is hinged to an auxiliary upper support rod 503. It also includes a second connector 510, one end of which is hinged to a lower support rod 502 and the other end of which is hinged to an auxiliary lower support rod 504.

[0055] The auxiliary upper support rod 503 is mounted on the upper support rod 501, and the auxiliary lower support rod 504 is mounted on the lower support rod 502. During the adjustment of the support frame height, the auxiliary upper and lower support rods need to rotate relative to each other. By providing a connecting piece at their connection point, sliding wear during relative rotation is reduced, increasing service life and making the connection more stable. Preferably, the first connecting piece 509 and the second connecting piece 510 are bushing connectors.

[0056] The connecting mechanism of the present invention can be a slide rail, an elastic rope, or a telescopic rod, etc. In this embodiment, the connecting mechanism consists of a wire rope 507 and a take-up device 506. The take-up device 506 is mounted on the second hinge device 508. The steel wire rope 507 mounted on the first hinge device 505 passes through the second hinge device 508 and connects to the take-up device 506. When the height needs to be lowered, the length of the steel wire rope 507 is extended. Due to the weight of the top frame, the main frame and auxiliary frame fold downwards, reducing the height of the support frame 5. When the required height is reached, the take-up device 506 is used to fix the length of the steel wire rope 507. The steel wire rope 507 provides inward tension to the two hinge devices, allowing the support frame 5 to be fixed at a certain height, thus achieving a foldable effect for the photovoltaic frame. When the height needs to be raised, the take-up device 506 is used to reduce the length of the steel wire rope 507. Due to the tension of the steel wire rope 507, the main frame and auxiliary frame fold upwards, increasing the height of the support frame 5. The height of the support frames 5 on both sides is adjustable. The height of the support frames 5 on both sides can be adjusted according to the sunlight conditions of the site, so that the flexible photovoltaic panels 11 mounted on the photovoltaic frame form a certain tilt angle, increasing the light-receiving area.

[0057] like Figure 3 As shown, the top frame includes a first fixed frame 101 and a second telescopic frame 201. One end of the first telescopic frame 201 is connected to the first fixed frame 101, and the other end is connected to the upper part of the main frame. One end of the flexible photovoltaic panel 11 is set on the first telescopic frame 201 so as to follow the telescopic movement of the first telescopic frame 201.

[0058] The bottom frame includes a second fixed frame 102 and a second telescopic frame 202. The second telescopic frame 202 has an adjustable length. One end of the second telescopic frame 202 is connected to the first fixed frame 201, and the other end is connected to the lower part of the main frame.

[0059] Telescopic frames 2 are installed on the left and right sides of the fixed frame 1. Photovoltaic panels 11 are installed on the fixed frame 1 and the telescopic frames 2. When using the photovoltaic frame, the telescopic frames 2 are pulled to the left and right to unfold the flexible photovoltaic panels 11 installed on the telescopic frames 2, increasing the photovoltaic area. When storing the photovoltaic frame, the telescopic frames 2 are retracted to the compressed state for easy storage. Preferably, pressure rollers 12 are also provided on the photovoltaic panels to press down and guide the photovoltaic panels 11, preventing the photovoltaic panels 11 from curling or warping.

[0060] In practice, the telescopic frame includes a telescopic rod and a side rod. One end of the telescopic rod is connected to one side of the fixed frame 1, and the other end is connected to the side rod. The telescopic rod can extend and retract relative to the fixed frame 1.

[0061] The telescopic pole moves in and out relative to the fixed frame 1, which in turn causes one end of the flexible photovoltaic panel 11 mounted on the side pole to move in and out, thereby increasing or decreasing the area of ​​the flexible photovoltaic panel.

[0062] In order to save materials and make the frame structure lightweight, this embodiment specifically sets the frame of the fixed frame 1 to be hollow, and the connection between the fixed frame 1 and the telescopic rod is provided with an opening. When storing, push the left and right side rods towards the fixed frame 1 so that the telescopic rod is stored in the fixed frame 1, and the area of ​​the telescopic frame 2 is reduced. At this time, the length of the photovoltaic panel needs to be reduced accordingly. When unfolding, pull the side rods on both sides away from the fixed frame 1 so that the telescopic rod is pulled out from the fixed frame 1 and extends to both sides of the fixed frame 1, and the area of ​​the telescopic frame 2 is increased.

[0063] In practice, a winding mechanism is installed on the side rod, and the flexible photovoltaic panel 11 on the top frame is installed on the winding mechanism on both sides.

[0064] The winding mechanism is set as a roller 10, with the flexible photovoltaic panel 11 mounted on both sides of the roller 10. The roller 10 moves with the telescopic frame 1. When storing the flexible photovoltaic panel 11, the roller 10 rotates to roll up the photovoltaic panel 11, preventing damage to the photovoltaic panel 11 due to repeated folding.

[0065] Preferably, the scroll 10 contains a spring to facilitate automatic reset and rotation during storage.

[0066] Preferably, it also includes a moving device, which is disposed at the lower end of the bottom side frame.

[0067] The movable device is located at the lower end of the bottom frame, allowing the foldable photovoltaic support frame to be moved to the desired location, thus increasing its usability. Preferably, in this embodiment, the movable device is configured as casters 8.

[0068] The working method of this embodiment is as follows: In the width direction, the two ends of the flexible photovoltaic panel 11 are respectively connected to the rollers 10 on the two side frames. When the flexible photovoltaic panel 11 is stored, the side rods on the left and right sides are pushed towards the fixed frame 1 to retract the telescopic rods and reduce the area of ​​the telescopic frame 2. At this time, the length of the flexible photovoltaic panel 11 needs to be reduced accordingly. The excess flexible photovoltaic panel 11 is rolled up by the rollers 10 to achieve the effect of storing the flexible photovoltaic panel 11. When the flexible photovoltaic panel 11 is unfolded, the side rods on both sides are pulled away from the fixed frame 1 to extend the telescopic rods to both sides of the fixed frame 1 and increase the area of ​​the telescopic frame 2. The flexible photovoltaic panel 11 is unrolled by rotating the rollers 10 until the telescopic rods are extended to their maximum length. At this time, the area of ​​the flexible photovoltaic panel 11 reaches its maximum and is completely laid on the surface of the frame structure formed by the fixed frame 1 and the telescopic frame 2.

[0069] In the vertical direction, when the height needs to be reduced, the length of the steel wire rope 507 is extended. Due to the weight of the top frame, the main frame and auxiliary frame fold downwards, reducing the height of the support frame. When the required height is reached, the length of the steel wire rope 507 is fixed using the wire take-up device 506. The steel wire rope 507 provides inward tension to the two fixing devices, allowing the support frame to be fixed at a certain height, thus achieving a foldable effect for the photovoltaic frame. When the height needs to be increased, the length of the steel wire rope 507 is reduced using the wire take-up device 506. Due to the tension of the steel wire rope 507, the main frame and auxiliary frame fold upwards, increasing the height of the support frame 5. The height of the support frames 5 on both sides is adjustable. The height of the support frames 5 on both sides can be adjusted according to the sunlight conditions of the site, so that the flexible photovoltaic panels 11 installed on the photovoltaic frame form a certain tilt angle, increasing the illumination area.

[0070] Example 2

[0071] This embodiment provides a retractable photovoltaic energy storage station, such as... Figure 6 As shown, it includes a main unit, at least one extension unit, and an energy storage box 21; the main unit and the extension unit are both foldable photovoltaic frames, the foldable photovoltaic frame includes two support frames 5, the two support frames 5 are arranged opposite to each other along a first direction, and an installation space is formed between the top frame and the bottom frame of the foldable photovoltaic frame;

[0072] The main unit has at least one extended unit on each side along the second direction, which is perpendicular to the first direction. The height of the extended unit is lower than that of the main unit. The height of the extended units decreases from the middle to both sides. The main unit and the extended units, as well as the extended units themselves, are connected by a connecting mechanism 9. The connecting mechanism 9 is used to retract the extended units toward the main unit or release them toward both sides of the main unit. When the extended units are released toward both sides of the main unit, the several installation spaces are connected to form the installation cavity of the photovoltaic energy storage station. The energy storage box 21 is installed in the installation cavity and is used to store the electrical energy generated by the photovoltaic panel 11.

[0073] The retractable photovoltaic energy storage station has a compressible and foldable canopy as its main body. The canopy consists of a main unit and several extension units arranged outwards in sequence. The main unit and the extension units, as well as the extension units themselves, are connected by a connecting mechanism 9. Flexible photovoltaic panels 11 are installed on the roof, with both ends of the flexible photovoltaic panels 11 mounted on rollers 10 on both sides. The rollers 10 are connected to a telescopic frame 2. In the width direction, the telescopic frame 2 is initially in a compressed state. When unfolded, the extension movement of the telescopic frame 2 drives the rollers 10 to rotate, thereby extending the flexible photovoltaic panels 11 mounted on the rollers 10 and increasing the light-receiving area. In the length direction, several extension units are stacked under the main unit. When unfolded, a moving device 8 pushes the extension units out from under the main unit, and each extension unit is in a fully unfolded state, allowing the photovoltaic panels of several extension units to receive sunlight and increasing the light-receiving area. When unfolded, several installation spaces are connected to form the installation cavity of the photovoltaic energy storage station. The energy storage box 21 is installed in the installation cavity, and the flexible photovoltaic panels 11 can convert solar energy into electrical energy and store it in the energy storage box 21.

[0074] In specific implementation, the main unit and the extension unit are connected by at least two connecting mechanisms, and the extension units are connected to each other. The connecting mechanisms include a first connecting mechanism and a second connecting mechanism. The upper end of the first connecting mechanism is located on the side of the top frame, and the lower end is connected to the upper part of the main frame. The upper end of the second connecting mechanism is located on the side of the bottom frame, and the lower end extends toward the lower side of the bottom frame.

[0075] The first connecting mechanism includes a top side frame 3, a slide groove 902 and a slider 901. The slide groove 902 is set on the top side frame 3 of the main unit and each extended unit. One end of the slider 901 is set inside the slide groove 902, and the other end is slidably set in the slide groove 902 of the adjacent extended unit. The upper end of the top side frame 3 is connected to the side rod of the top frame, and the lower end is connected to the upper part of the main frame.

[0076] The second connecting mechanism includes a bottom side frame 7, a slide groove 902, and a slider 901. The slide groove 902 is provided on the bottom side frame 7 of the main unit and each extension unit. One end of the slider 901 is provided inside the slide groove 902, and the other end is slidably provided in the slide groove 902 of the adjacent extension unit. The upper end of the bottom side frame 7 is connected to the side rod of the bottom frame.

[0077] Preferably, the two casters 8 are respectively hinged to both ends of the bottom side frame 7, and the bottom side frame 7 has grooves at both ends for accommodating the casters 8.

[0078] One end of the slider 901 is mounted on the slide groove 902 and slides along the inner wall of the slide groove 902. When multiple photovoltaic frames are connected, the protrusion of the slider 901 is embedded in the slide groove 902 of the adjacent photovoltaic frame, allowing the adjacent photovoltaic frames to slide along the slide groove 902. Preferably, the slide groove 902 is closed at both ends, which limits the slider 901 mounted in the slide groove 902. The slide groove 902 is mounted on the side frame, and the top side frame 3 and the bottom side frame 7 have a certain length downward to allow for the storage height of the extended unit, making it easy to store the photovoltaic station.

[0079] In specific implementation, it also includes side photovoltaic panels 4, which are set on the top side frame 3.

[0080] A flipping shaft is provided at the lower part of the top side frame 3, which connects to one side of the side photovoltaic panel 4. In the retracted state, the side photovoltaic panel 4 flips inward with the light-receiving surface facing down; in the unfolded state, the side photovoltaic panel 4 flips outward with the light-receiving surface facing up, which can increase the overall solar power generation. Preferably, to enhance the stability of the side photovoltaic panel 4, side photovoltaic panel stabilizing rods 18 are hinged to both sides of the side photovoltaic panel 4, and the other end of the stabilizing rod 18 is hinged to the upper support rod 501.

[0081] In a specific implementation, it also includes a cleaning strip 13, which is set on the lower surface of the top frame, and the height of the cleaning strip 13 does not exceed the height difference between adjacent units.

[0082] The cleaning strip 13 is set on the lower surface of the top frame. During the retraction of the adjacent extended unit below, the cleaning strip 13 can scrape off the dust accumulated on the lower photovoltaic panel 11, and at the same time, it can also play a buffering and protective role, reducing the damage of the photovoltaic panel 11.

[0083] The working principle of this embodiment is as follows:

[0084] When there is a protruding unit, the slide groove 902 of the protruding unit and the main unit are at the same height. The height of the top side frame 3 of the protruding unit is lower than that of the main unit. The slider 901 of the main unit is embedded in the slide groove 902 of the protruding unit, so that the protruding unit is slidably connected to the main unit. When storing, push the protruding unit to slide under the main unit to complete the storage. When unfolding, pull out the protruding unit so that the protruding unit is fully extended and unfolded to the length of use.

[0085] When there are two protruding units located on both sides of the main unit, the grooves 902 of the protruding units and the main unit are on the same horizontal line. The height 3 of the side frames of the two protruding units is lower than that of the main unit. The width of the top frame of the main unit is more than twice that of the adjacent protruding units. The main unit is provided with two sliders 901, which are respectively embedded in the grooves 902 of the two protruding units, so that the two protruding units are slidably connected to the main unit. When stored, the two protruding units are pushed from both sides to slide into the bottom of the main unit to complete the storage. When unfolded, the protruding units are pulled out from both sides to fully extend to the usable length.

[0086] In this embodiment, a main unit, named segment M, is set up, with 4 segments on each side, for a total of 9 segments. The width of the main unit is more than twice that of the adjacent extended units. In the initial retracted state, the 4 extended units on each side are nested together. The extended unit with the smallest cross-sectional size is located at the innermost part and is named A4. A3 is one size larger than A4 and surrounds A4; A2 is one size larger than A3 and surrounds A3; A1 is one size larger than A2 and surrounds A2; and M, the main unit, is one size larger than A1 and surrounds A1. Symmetrically, the subsequent segments, starting from segment M, are named B1, B2, B3, and B4 respectively. Viewed from the front, the flexible photovoltaic panels and frames at the top are layered on top of each other, and the bottom frames are also layered on top of each other.

[0087] During the longitudinal unfolding phase, the casters 8, which are folded into the bottom side frame 7, are pulled out and folded downwards to touch the ground. At this time, the bottom layer units, namely sections A4 and B4, are pulled out. When they are pulled out by a distance approximately the width of a single photovoltaic panel, due to the presence of the connecting mechanism 9, sections A4 and B4 automatically pull out the layer above them, and then each layer above it is pulled out one by one, from A4 to A1, from B4 to B1. Each section is fully extended, unfolding to the usable length of the canopy.

[0088] During the lateral extension phase, starting from section M, the flexible photovoltaic panel 5 is connected at both ends to the rollers 10 on both side frames. When unfolding, the side rods are pulled away from the fixed frame 1, causing the telescopic rods to be pulled out of the fixed frame 1 and extend to both sides of the fixed frame 1. This increases the area of ​​the telescopic frame 2, and the flexible photovoltaic panel 11 is unwound by the rotation of the rollers 10 until the telescopic rods reach their maximum length. At this point, the area of ​​the flexible photovoltaic panel 11 reaches its maximum, completely covering the surface of the frame structure formed by the fixed frame 1 and the telescopic frame 2. Due to the interlocking shape of the slider 901 and the groove 902 of the connecting mechanism 9, the lateral extension of section M will affect A1 and B1, A1 will affect A2, B1 will affect B2, and so on. The lateral extension of each extended unit makes them nearly synchronous and aligned as they unfold outwards. Once all sections reach their widest lateral position, the wheel brakes of each section's casters 8 are engaged to position the canopy.

[0089] In the vertical unfolding stage, such as Figure 8 As shown, the support frame 5 is gradually extended by the cable retractor 506, thereby raising the shed to a predetermined height. Due to the linkage mechanism between the units via the slider 901 and the chute 902, when lifting starts from segment M, A1 and B1 will also rise accordingly, thereby driving other units such as A2 and B2 to rise synchronously. This process requires precise coordination of the vertical extension amplitude of each unit. The cable retractor 506 ensures that the wire rope 507 maintains appropriate tension to prevent it from retracting, thereby maintaining the unfolding angle and height of the support frame 5, facilitating synchronous control of the vertical unfolding of each unit segment. The height of the support frame 5 can be set in different levels to ensure that the top photovoltaic panel reaches a preset tilt angle, which is determined based on the complementary angle of the statistical average solar altitude angle of the application area. In this embodiment, a structural stabilizing rod 6 is also introduced, one end of which is connected to the lower part of the lower support rod 501 by a hinge, and the other end is connected to the long side of the bottom frame to further enhance the stability of the support frame 5.

[0090] In specific implementation, such as Figure 5 As shown, a steel plate is installed on the bottom frame, consisting of a centrally fixed flat plate 14, an additional plate 16 hinged to the wide side of the flat plate, and a transition plate 15 connected to the long side. This facilitates the installation of various equipment inside the shed and is suitable for various harsh environments. In the folded state, the additional plates 16 on both sides are flipped and folded over to cover the central flat plate 14. The upper edge of the transition plate 15 is connected to the outward edge of the central flat plate 15. When each unit is unfolded longitudinally, the transition plate 15 rests on top of the lower flat plate 14, thus preventing the wheeled housing from being pushed in without jamming.

[0091] After the shed is fully unfolded, the steel plates laid on the bottom frame are pulled out layer by layer, and the additional plate 16 is flipped upwards so that the plate surface is connected as one piece. In specific implementation, a control box 23 and a power transmission box 22 are also included. The energy storage box 21, control box 23, and power transmission box 22 are equipped with casters 8, which can roll on the plate surface, facilitating the movement of the boxes to designated positions. (See reference...) Figure 7 The arrangement is as follows: Wiring is installed between the photovoltaic panels and the control box 23. Wiring is also installed between the control box 23 and each energy storage box 21, with the transmission lines of the energy storage boxes 21 connected to the transmission box 22. The transmission box 22 is also controlled by the control box 23, outputting controllable electrical energy. Each of the control box 23, energy storage box 21, and transmission box 22 has an independent cooling fan. In practical implementation, an upward air guide component 20 can be designed to facilitate the removal of heat from the greenhouse, taking into account the rising characteristics of hot air.

[0092] Preferably, such as Figure 6 As shown, the fully extended canopy is covered with lightweight panel assemblies 17 to protect the equipment inside. Ventilation fans 19 are installed in the panel assemblies under the front and rear roofs. The fan motors can be rotated according to the external wind direction to allow fresh air to enter and hot air to be exhausted.

[0093] When the site needs to be relocated, personnel enter the shed to shut down each enclosure, disconnect the cable contacts, remove the air guide components 20 installed on the enclosure, and move them out of the shed along with the enclosure. The outer panel assembly 17 is then removed. The additional panel 16 is flipped over so that it overlaps the flat plate 14. The stabilizing rods 18 of the side photovoltaic panels 4 are folded back to their original positions. The side photovoltaic panels 4 are flipped downwards and turned inwards to reset. This begins the folding and compression of the shed, increasing the length of the steel cables 507 of the first hinge device 505 and the second hinge device 508. Due to the gravity of the flexible photovoltaic panels 11 on the top frame, the main frame and auxiliary frame automatically possess the potential energy to fold inwards, reducing the height of the shed.

[0094] Lower to the storage height and lift the wheel brakes of each caster 8 to allow them to roll freely. Starting from section M, retract the top and bottom telescopic frames 2 of each unit laterally. During the lateral retraction, the roller 10 rotates, and a portion of each side of the flexible photovoltaic panel 11 on the roof rolls back onto the roller 10. Then, push each unit back longitudinally, from A4 to A1, from B4 to B1. As each section retracts into the previous section, ensure that the casters 8 fold back into the grooves provided in the bottom side frame 7. The cleaning felt strip 13 fixed under the long side of the top frame scrapes away the accumulated dust on the lower flexible photovoltaic panel 11 during the retraction of the next unit, and also serves as a cushioning protection. The unit sections are then nested together under section M, achieving the initial storage state.

[0095] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A foldable photovoltaic frame, characterized in that, The system includes a photovoltaic panel, a bottom frame, a top frame for placing the photovoltaic panel, and two support frames. The two support frames are positioned opposite each other on either side of the top and bottom frames and connect them. The two support frames can be independently adjusted to create a height difference. Each support frame includes a main frame and an auxiliary frame, connected by a tensionable connecting mechanism. The main frame includes an upper and a lower section that are hinged to each other. The upper end of the upper section of the main frame is connected to the side of the top frame, and the lower end of the lower section is connected to the side of the bottom frame. The auxiliary frame includes an upper and a lower section that are hinged to each other. The upper end of the upper section of the auxiliary frame is hinged to the upper part of the main frame, and the lower end of the lower section of the auxiliary frame is hinged to the lower part of the main frame. One end of the connecting mechanism is located at the hinge between the upper and lower sections of the main frame, and the other end is located at the hinge between the upper and lower sections of the auxiliary frame. The connecting mechanism is used to adjust the distance between the hinges of the main frame and the auxiliary frame to drive the support frame to fold and change its height. The top frame includes a first fixed frame and a first telescopic frame. One end of the first telescopic frame is connected to the first fixed frame, and the other end is connected to the upper part of the main frame. One end of the photovoltaic panel on the top frame is set on the first telescopic frame so as to follow the telescopic movement of the first telescopic frame. The bottom frame includes a second fixed frame and a second telescopic frame. The second telescopic frame is adjustable in length. One end of the second telescopic frame is connected to the second fixed frame, and the other end is connected to the lower part of the main frame. The telescopic frame includes a telescopic rod and a side rod. One end of the telescopic rod is connected to one side of the fixed frame, and the other end is connected to the side rod. The telescopic rod can extend and retract relative to the fixed frame. One end of the photovoltaic panel is set on the side rod.

2. A folding photovoltaic frame according to claim 1, characterized in that, The main frame also includes a first hinge device. The upper part of the main frame includes an upper support rod, and the lower part of the main frame includes a lower support rod. The tail end of the upper support rod and the head end of the lower support rod are respectively hinged to the first hinge device and rotate relative to the first hinge device. The upper support rod is connected to the side of the top frame, and the lower support rod is connected to the side of the bottom frame. The auxiliary frame also includes a second hinge device. The upper part of the auxiliary frame includes an upper auxiliary support rod, and the lower part of the auxiliary frame includes a lower auxiliary support rod. The tail end of the upper auxiliary support rod and the head end of the lower auxiliary support rod are respectively hinged to the second hinge device and rotate relative to the second hinge device. The upper auxiliary support rod is hinged to the upper support rod, and the lower auxiliary support rod is hinged to the lower support rod. A connecting mechanism is provided between the first hinge device and the second hinge device.

3. A folding photovoltaic frame according to claim 2, characterized in that, It also includes a first connector, one end of which is hinged to an upper support rod and the other end of which is hinged to an auxiliary upper support rod; and / or, it also includes a second connector, one end of which is hinged to a lower support rod and the other end of which is hinged to an auxiliary lower support rod.

4. A folding photovoltaic frame according to claim 1, characterized in that, The photovoltaic panels installed on the top frame are flexible photovoltaic panels, and a winding mechanism is installed on the side rods, with one end of the flexible photovoltaic panel attached to the winding mechanism.

5. A folding photovoltaic frame according to claim 2, characterized in that, The connecting mechanism includes a steel wire rope and a take-up device. The take-up device is mounted on the second hinge device. One end of the steel wire rope is connected to the first hinge device, and the other end passes through the second hinge device and connects to the take-up device.

6. A retractable photovoltaic energy storage station, characterized in that, It includes a main unit, at least one extension unit, and an energy storage box; the main unit and the extension unit are both foldable photovoltaic frames as described in any one of claims 1-5, the foldable photovoltaic frame includes two support frames, the two support frames are arranged opposite to each other along a first direction, and an installation space is formed between the top frame and the bottom frame of the foldable photovoltaic frame; The main unit has at least one extended unit on each side along the second direction, which is perpendicular to the first direction. The height of the extended unit is lower than that of the main unit. The height of the extended units decreases from the middle to both sides. The main unit and the extended units, as well as the extended units themselves, are connected by a linkage mechanism. The linkage mechanism is used to retract the extended units toward the main unit or release them toward both sides of the main unit. When the extended units are released toward both sides of the main unit, the several installation spaces are connected to form the installation cavity of the photovoltaic energy storage station. The energy storage box is installed in the installation cavity and is used to store the electrical energy generated by the photovoltaic panels.

7. A retractable photovoltaic energy storage station according to claim 6, characterized in that, The main unit and the extension unit are connected by at least two connecting mechanisms, and the extension units are connected to each other. The connecting mechanisms include a first connecting mechanism and a second connecting mechanism. The upper end of the first connecting mechanism is located on the side of the top frame, and the lower end is connected to the upper part of the main frame. The upper end of the second connecting mechanism is located on the side of the bottom frame, and the lower end extends toward the lower side of the bottom frame. The first connecting mechanism includes a top side frame, a slide groove, and a slider. The slide groove is set on the top side frame of the main unit and each extended unit. One end of the slider is set inside the slide groove, and the other end is slidably set in the slide groove of the adjacent extended unit. The second linkage mechanism includes a bottom side frame, a slide groove, and a slider. The slide groove is set on the bottom side frame of the main unit and each extension unit. One end of the slider is set inside the slide groove, and the other end is slidably set in the slide groove of the adjacent extension unit.

8. A retractable photovoltaic energy storage station according to claim 7, characterized in that, It also includes side photovoltaic panels, which are mounted on the top side frame.

9. A retractable photovoltaic energy storage station according to claim 7, characterized in that, It also includes cleaning strips, which are set on the lower surface of the top frame, and the height of the cleaning strips does not exceed the height difference between adjacent units.

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