Photovoltaic unit

Abstract

A photovoltaic unit comprising a member; the first photovoltaic unit is fixed at a position above the component; the second photovoltaic unit is arranged below the first photovoltaic unit; and the second photovoltaic unit comprises at least one second photovoltaic module, and the second photovoltaic module comprises one or more of a flat plate type structure, a folding type structure and a winding type structure. The roof photovoltaic system is compact and reasonable in structure and convenient to operate, the defect that the area of a traditional roof photovoltaic system is fixed and limited is overcome by introducing the second photovoltaic unit which can be stored and unfolded, the area expandability and flexibility of the photovoltaic panel are remarkably improved, the second photovoltaic unit can be easily unfolded or stored according to requirements, and the roof photovoltaic system is convenient to use. Therefore, electric energy output is optimized, and dependence on an external power supply is reduced. Meanwhile, due to the selection of various structures such as a flat plate type structure, a folding type structure and a winding type structure, the roof photovoltaic unit can adapt to different vehicle types and requirements, neatness and attractiveness of the appearance of the vehicle are guaranteed, and the overall efficiency and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive photovoltaic power generation, in particular to a photovoltaic unit. Background Art

[0002] With the global emphasis on renewable energy and the improvement of environmental awareness, solar energy, as a clean and renewable energy form, has been increasingly widely applied. In the fields of architecture or transportation, such as photovoltaic panels on rooftops or on vehicles, as an efficient way to utilize solar energy resources, they are gradually becoming a research hotspot. The rooftop or vehicle-mounted photovoltaic system installs photovoltaic panels on the vehicle roof to convert solar energy into electrical energy, providing auxiliary power for buildings or vehicles or directly driving the vehicle, thereby reducing the dependence on traditional energy and reducing carbon emissions.

[0003] However, especially in the existing vehicle-mounted photovoltaic systems, there are still many deficiencies in design, which limit their efficiency and convenience in practical applications. Specifically, the existing vehicle-mounted photovoltaic systems mainly have the following defects:

[0004] Fixed and limited area of photovoltaic panels: Traditional vehicle-mounted photovoltaic systems usually directly lay photovoltaic panels with fixed sizes on the vehicle roof, and cannot flexibly adjust the area of the photovoltaic panels according to actual needs. When the sunlight is sufficient, this design may not meet the high demand for electrical energy of the vehicle; while when the sunlight is insufficient or no additional power is required, the area of these photovoltaic panels appears redundant.

[0005] Limited light energy conversion efficiency: Due to the limited and fixed area of the photovoltaic panels, the existing vehicle-mounted photovoltaic systems often have difficulty achieving the optimal state in terms of light energy conversion efficiency. Especially during vehicle driving, the photovoltaic panels may be affected by factors such as vehicle body occlusion and dust accumulation, further reducing the light energy conversion efficiency.

[0006] To sum up, these problems not only limit the actual application effect of the vehicle-mounted photovoltaic system, but also hinder its promotion and application in a wider range of fields.

[0007] Therefore, we propose a photovoltaic unit. Summary of the Utility Model

[0008] The applicant of the present utility model aims at the above-mentioned shortcomings in the existing production technology, provides a photovoltaic unit, which not only solves the defect of the fixed and limited area of the traditional vehicle-mounted photovoltaic system, but also significantly improves the area scalability and flexibility of the photovoltaic panels.

[0009] The technical solution adopted by the present utility model is as follows:

[0010] A photovoltaic unit, comprising:

[0011] A component, which is fixed on a platform and provides fixing and storage functions, and at least one installation position is provided on the component;

[0012] A first photovoltaic unit, which is fixed above the component;

[0013] A second photovoltaic unit, which is placed below the first photovoltaic unit, can be stored in the corresponding installation position, and can be unfolded and extended out of the side wall of the first photovoltaic unit;

[0014] The first photovoltaic unit includes at least one first photovoltaic module, and the first photovoltaic module is of a flat structure;

[0015] The second photovoltaic unit includes at least one second photovoltaic module, and the second photovoltaic module includes one or more of a flat structure, a folding structure and a winding structure.

[0016] Further, the platform is an area located outdoors and capable of facing the sun, including the top of a transportation device or the top of a building.

[0017] Further, the weight of the second photovoltaic unit is less than that of the first photovoltaic unit, the thickness of the second photovoltaic unit is less than that of the first photovoltaic unit, the weight of the second photovoltaic unit is more than 30% less than that of the first photovoltaic unit, and the thickness of the second photovoltaic unit is more than 20% less than that of the first photovoltaic unit.

[0018] Further, the second photovoltaic unit in the unfolded state is arranged parallel to the first photovoltaic unit or at a certain angle.

[0019] Further, the first photovoltaic module includes a photovoltaic module encapsulated by two layers of glass front and back or a photovoltaic module encapsulated by a single layer of front glass.

[0020] Further, the number of the second photovoltaic modules is 1, 2, 3 or 4.

[0021] Further, the second photovoltaic module is of a flat structure, parallel to the first photovoltaic unit, and is drawn and installed in the installation position provided on the component, and the length, width and thickness of each second photovoltaic module do not exceed the effective space of the installation position, and the second photovoltaic module is drawn and installed on the corresponding installation position of the component through a slide rail.

[0022] Further, the second photovoltaic module is of a folding structure, and the second photovoltaic module is turned up 180 degrees and stacked, and then drawn and stored in the installation position.

[0023] Even further, a locking structure for fixing the stored second photovoltaic module is further provided on the component.

[0024] Further, the second photovoltaic module has a wound structure. One end of the second photovoltaic module is fixed to the component, and the other end of the second photovoltaic module is connected to a shaft for winding. After the module is laid out, it can be on the same plane as the first module or form a certain angle, such as hanging vertically on both sides.

[0025] Further, the shaft is circular or rectangular, and the length and thickness of the shaft size do not exceed the length and thickness of the contour edge of the corresponding installation position of the component.

[0026] Furthermore, it further includes a support component for supporting the second photovoltaic module. The support component includes two cross - arranged connecting rods and plug connectors docked with the connecting rods. There are two groups of plug connectors respectively arranged on the shaft and the component, and the two groups of plug connectors can be docked with each other.

[0027] The beneficial effects of the present utility model are as follows:

[0028] The structure of the present utility model is compact, reasonable and easy to operate. By introducing a second photovoltaic unit that can be stored and deployed, it not only solves the defect that the area of the traditional roof photovoltaic system is fixed and limited, but also significantly improves the area scalability and flexibility of the photovoltaic panel. Users can easily deploy or store the second photovoltaic unit according to the actual lighting conditions and power consumption requirements, thereby optimizing the power output and reducing the dependence on external power sources. At the same time, the selection of various structures such as flat, folding and wound makes the roof photovoltaic unit adaptable to different vehicle models and requirements, ensuring both the cleanliness and beauty of the vehicle appearance and improving the overall efficiency and stability.

[0029] At the same time, the present utility model also has the following advantages:

[0030] 1. Through the design of introducing a second photovoltaic unit that can be stored and deployed, the area scalability of the photovoltaic panel in the roof photovoltaic unit of the present utility model is significantly improved. Whether it is a flat, folding or wound structure, users can flexibly adjust the area of the photovoltaic panel according to actual needs. When there is sufficient sunlight and more power is needed, the second photovoltaic unit can be easily deployed to increase the power output; while when the sunlight is insufficient or no additional power is needed, the second photovoltaic unit can be stored to reduce the vehicle burden. This flexibility not only meets the changing power requirements under different lighting conditions, but also improves the practicability and adaptability of the roof photovoltaic unit.

[0031] 2. In the roof-mounted photovoltaic unit of the present utility model, through a cleverly designed installation position and storage mechanism, the roof space is maximally utilized while ensuring the cleanliness and beauty of the vehicle appearance. When the second photovoltaic unit is stored in the installation position, the vehicle appearance is hardly affected, maintaining the original streamline design and aesthetics of the vehicle. This is undoubtedly an important advantage for consumers who pay attention to the vehicle appearance. In addition, the design of the installation position also fully considers the aerodynamic performance, ensuring the stability and fuel economy of the vehicle during high-speed driving.

[0032] 3. The design of the roof-mounted photovoltaic unit of the present utility model fully considers user experience and convenience. Whether it is a flat type, a folding type or a winding type structure, users can realize the deployment and storage of the second photovoltaic unit through simple operations. The adjustment function of the support assembly also allows users to adjust the tilt angle of the photovoltaic panel according to actual needs to optimize the light energy reception effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the present utility model.

[0034] Figure 2 is a schematic structural diagram of the winding type second photovoltaic unit of the present utility model.

[0035] Figure 3 is a schematic connection structure diagram of the second photovoltaic unit and the support assembly in Embodiment 3 of the present utility model.

[0036] Wherein:

[0037] 100, component; 110, installation position; 200, second photovoltaic unit; 300, support assembly; 310, plug joint; 320, connecting rod; 400, shaft rod; 500, first photovoltaic unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The following combines the drawings to illustrate the detailed embodiments of the present utility model.

[0039] Embodiment 1

[0040] As Figures 1 - 3 shown, the roof-mounted photovoltaic unit in this embodiment mainly consists of a component 100, a first photovoltaic unit 500, a flat type second photovoltaic unit 200 and a support assembly 300. The component 100 serves as a base, and a plurality of installation positions 110 are designed thereon for storing the second photovoltaic unit 200. These installation positions not only provide a safe storage space for the second photovoltaic unit, but also ensure the cleanliness and beauty of the roof appearance.

[0041] Combined with the drawings, the following elaborates on the specific structure:

[0042] As Figures 1 - 3As shown, the component 100 in this embodiment is usually an anti-corrosion metal structure, which is detachably fixed on the roof of a building or the top of a transportation device, or other outdoor areas that can face the sun. In this embodiment, the roof of a vehicle is taken as an example for illustration. A plurality of mounting positions 110 are provided on the component 100 for accommodating the second photovoltaic unit 200 and facilitating the installation and storage of the second photovoltaic unit 200.

[0043] A series of mounting positions 110 are ingeniously designed on the component 100. These mounting positions are customized according to the shape and size of the vehicle roof to maximize the use of space without affecting the aerodynamic performance of the vehicle. The mounting positions are made of lightweight and high-strength composite materials, which not only reduce the overall weight but also ensure the structural firmness.

[0044] As Figures 1 - 3 shown, the first photovoltaic unit 500 in this embodiment is fixed above the component 100 and is the main power generation part of the photovoltaic system. It includes one or more first photovoltaic modules, which usually adopt a flat structure and have high photoelectric conversion efficiency and good weather resistance. The size and power of the first photovoltaic unit 500 are determined according to specific application requirements and can be a single large-power module or a combination of multiple small-power modules.

[0045] The first photovoltaic modules have various encapsulation methods, including photovoltaic modules encapsulated with two layers of glass front and back (double-glass modules) and photovoltaic modules encapsulated with a single layer of front glass (single-glass modules). Double-glass modules have higher mechanical strength and weather resistance and are suitable for harsh environments; while single-glass modules are lighter and have lower costs and are suitable for application scenarios with strict requirements on weight and cost.

[0046] The surface of the first photovoltaic module is covered with a scratch-resistant and wear-resistant transparent protective film, which effectively prevents the influence of pollutants such as dust and bird droppings on the battery panel. The first photovoltaic unit 500 is usually arranged parallel to the vehicle roof. In necessary cases, it can also be adjusted at a certain angle, or connected to the component 100 in an adjustable angle manner, and basically covers the area of the vehicle roof.

[0047] The first photovoltaic unit 500 in this embodiment has a rectangular structure, which better matches the shape of the vehicle roof and can also increase the coverage area with the vehicle roof.

[0048] As Figures 1 - 3 shown, the second photovoltaic unit 200 in this embodiment is a major highlight of the present invention. It is placed below the first photovoltaic unit 500 and can be stored in the mounting position 110 of the component 100. When it is necessary to increase the power generation or adjust the angle of the photovoltaic panel, the second photovoltaic unit 200 can be unfolded and extended out of the side wall of the first photovoltaic unit 500.

[0049] The second photovoltaic unit 200 includes at least one second photovoltaic component, which is usually designed according to the shape of the component 100. In this embodiment, the component 100 is rectangular, so the number of second photovoltaic components is 1, 2, 3, or 4. The structural forms of these components are flexible and diverse, and can be one or more of a flat structure, a folding structure, and a winding structure. The flat structure is similar to the first photovoltaic unit 500, which is simple and efficient; the folding structure is convenient for storage and deployment, and occupies less space; the winding structure is more flexible and can adjust the length and angle according to needs.

[0050] The weight and thickness of the second photovoltaic component are usually less than those of the first photovoltaic component to reduce the overall weight and improve the storage efficiency. Specifically, the weight of the second photovoltaic unit 200 may be less than 30%-40% of the weight of the first photovoltaic unit 500, preferably 30%, and the thickness may be less than 20% of the thickness of the first photovoltaic unit 500. Such a design enables the second photovoltaic unit 200 to be easily stored and deployed without affecting the overall stability.

[0051] The second photovoltaic unit 200 in this embodiment is made of the same material as the first photovoltaic unit 500, but is smaller and more flexible in size.

[0052] Embodiment 2

[0053] As Figure 1 shown, in this embodiment, the second photovoltaic component is designed as a flat structure and is directly stored in the installation position 110 on the component 100 by sliding, and is also stored in the installation position 110 after folding in a folding manner.

[0054] In this embodiment, the second photovoltaic component is parallel to the first photovoltaic unit 500, and is slidably arranged in the installation position 110 opened on the component 100, and the length, width, and thickness of each second photovoltaic component do not exceed the effective space of the installation position 110. The second photovoltaic component is slidably arranged on the corresponding installation position 110 of the component 100 through a slide rail.

[0055] If the second photovoltaic unit 200 adopts a flat structure, multiple installation positions 110 are on different planes and are parallel to each other.

[0056] If the second photovoltaic unit 200 adopts a folding structure, the area of the installation position 110 can be planned according to the folding area, and the installation position 110 can be arranged on the same plane or different planes.

[0057] The folding second photovoltaic unit in this embodiment adopts an upward flip of 180° for folding and storage.

[0058] When the vehicle is in a stationary state and there is sufficient sunlight, the user can, through simple operations, extract the second photovoltaic unit 200 from the installation position 110 and expand it to a position parallel to the first photovoltaic unit 500. The expansion process is smooth and does not require complex mechanical devices to achieve. The expanded second photovoltaic unit can significantly increase the total area of the photovoltaic panels, thereby increasing the power output.

[0059] To ensure the stability of the second photovoltaic unit in the expanded state, a support assembly 300 is provided on the first photovoltaic unit 500.

[0060] The support assembly 300 includes two cross - arranged connecting rods 320 and socket joints 310 docked with the connecting rods 320. There are two groups of socket joints 310 respectively arranged at both ends of the movable end of the second photovoltaic unit 200 and the corresponding sides of the first photovoltaic unit 500.

[0061] During expansion, by expanding the second photovoltaic unit 200 and then docking the cross - arranged connecting rods 320 with the socket joints 310, the support for the second photovoltaic unit 200 is achieved.

[0062] In another embodiment, there are two groups of socket joints 310 respectively arranged at the movable end of the second photovoltaic unit 200 and the side wall of the vehicle. The side wall of the vehicle and the movable end of the second photovoltaic unit 200 are connected and supported by the connecting rods 320 to improve the strength.

[0063] Meanwhile, the support assembly 300 can also include ropes to connect the second photovoltaic unit 200 with other vertical structures, such as anchor piles, trees, etc., so as to fix the second photovoltaic unit 200.

[0064] The length of the connecting rod 320 can be adjusted, allowing the user to adjust the tilt angle of the second photovoltaic unit according to actual needs to optimize the light energy reception effect.

[0065] In addition, after the second photovoltaic unit 200 is stored in the installation position 110 by means of pulling, at this time, a locking structure for fixing the stored second photovoltaic unit is also provided on the first photovoltaic unit 500. The locking structure is realized by means such as screw connection and pin connection to prevent it from falling off.

[0066] In summary, in this embodiment, the photovoltaic unit can flexibly adjust the expansion state of the second photovoltaic unit according to the actual lighting conditions and power consumption requirements. When the sunlight is insufficient or additional power is not needed, the second photovoltaic unit can be stored in the installation position 110 to reduce the vehicle burden; when the sunlight is sufficient and more power is needed, the second photovoltaic unit can be easily expanded to increase the power output. This flexibility makes the roof photovoltaic unit more adaptable to the complex and changeable vehicle - using environment.

[0067] When the second photovoltaic unit is housed in the installation position 110, the vehicle's appearance is hardly affected, maintaining the original vehicle's streamlined design and aesthetics. This is undoubtedly an important advantage for consumers who pay attention to the vehicle's appearance.

[0068] The roof photovoltaic unit in this embodiment has significant advantages in reducing carbon emissions and environmental pollution. By increasing the power output of the photovoltaic panels and optimizing the power management and distribution strategies, the roof photovoltaic unit in this embodiment can further reduce the fuel consumption and emission levels of the vehicle, contributing to the realization of green and low-carbon travel.

[0069] Embodiment Three

[0070] As Figures 2 - 3 shown, different from Embodiment 1, the second photovoltaic unit 200 in this embodiment adopts a winding structure. The reason why the second photovoltaic unit 200 in this embodiment can be wound is that it uses new materials, such as thin-film solar cell materials like copper indium gallium selenide (CIGS). These materials not only make the components thinner and lighter but also significantly improve the photoelectric conversion efficiency. The "flexible" characteristic of the flexible photovoltaic panel allows it to be bent, folded, or even rolled up, greatly expanding the possibilities of installation and application.

[0071] The winding second photovoltaic unit is designed as a roll of film that can be freely wound and unwound. One end of the component is fixed at a specific position on the first photovoltaic unit 500, and the other end is connected to a precisely designed shaft rod 400. The winding and unwinding operations of the second photovoltaic unit can be achieved through the rotational movement of the shaft rod.

[0072] To ensure the performance stability and service life extension of the flexible photovoltaic material during long-term use, a protective layer is also covered on the surface of the component to resist the influence of adverse factors such as ultraviolet radiation and rain erosion. At the same time, to improve the overall strength and stiffness of the component, a reinforcing layer is also added below the protective layer to enhance the mechanical properties of the component.

[0073] The winding second photovoltaic unit in this embodiment is opened manually and fixed by the support component 300 after being opened.

[0074] One end of the winding second photovoltaic unit is fixed on the first photovoltaic unit 500, and the other end is connected with a shaft rod 400. The length of the shaft rod 400 is greater than the length of the corresponding side of the second photovoltaic unit 200, facilitating the shaft rod 400 to extend out on both sides of the second photovoltaic unit 200.

[0075] The shaft rod 400 in this embodiment is circular or rectangular, and the length and thickness of the dimensions of the shaft rod 400 do not exceed the length and thickness of the contour edge of the corresponding installation position 110 of the component 100.

[0076] The support component 300 in this embodiment includes two cross - arranged connecting rods 320 and socket joints 310 docked with the connecting rods 320. There are two groups of socket joints 310 respectively arranged at both ends of the shaft rod 400 and both ends of the corresponding sides of the first photovoltaic unit 500.

[0077] When unfolding, by unfolding the second photovoltaic unit 200 and then docking the cross - arranged connecting rods 320 with the socket joints 310, the support for the second photovoltaic unit 200 is realized.

[0078] The two groups of socket joints in this embodiment can be docked with each other, which is convenient for the drum 400 to wind the second photovoltaic unit 200 and then dock it into the socket joints 310 on the first photovoltaic unit 500, thus realizing fixation.

[0079] Embodiment Four

[0080] In this embodiment, the second photovoltaic unit 200 adopts one or more of a flat structure, a folding structure and a winding structure. Through the combination of second photovoltaic units 200 with various different structures, the use in different environments can be realized.

[0081] The folding - type and flat - type photovoltaic modules occupy a relatively large space and are subject to a relatively large inertial force during driving. In this regard, the winding - type photovoltaic module has obvious advantages.

[0082] However, in actual use, the winding - type is greatly affected by the external environment and cannot be used in strong - wind weather, which will accelerate aging and damage. At this time, the flat - type and folding - type have better stability. Therefore, through combined use, it can adapt to more environments, improve the space utilization rate and portability of the photovoltaic panel, and also maintain a relatively high light - energy conversion efficiency and stability.

[0083] The above description is an explanation of the present utility model, not a limitation thereof. The scope defined by the present utility model can be seen in the claims. Any form of modification can be made within the protection scope of the present utility model.

Claims

1. A photovoltaic unit, characterized in that: include: A component, which is fixed on the platform and provides fixing and storage functions, and at least one installation position is provided on the component; A first photovoltaic unit, which is fixed at a position above the component; A second photovoltaic unit is disposed below the first photovoltaic unit and can be stored in a corresponding installation position and can be unfolded and extended out of a side wall of the first photovoltaic unit; A first photovoltaic unit includes at least one first photovoltaic component, wherein the first photovoltaic component is a flat-plate structure; The second photovoltaic unit includes at least one second photovoltaic component, and the second photovoltaic component includes one or more of a flat-plate structure, a folded structure, and a rolled structure.

2. A photovoltaic unit according to claim 1, characterized in that: The platform is an area located outdoors and facing the sun, including the top of transportation equipment or the top of a building.

3. A photovoltaic unit according to claim 1, characterized in that: The weight of the second photovoltaic unit is less than the weight of the first photovoltaic unit, the thickness of the second photovoltaic unit is less than the thickness of the first photovoltaic unit, the weight of the second photovoltaic unit is less than 30% of the weight of the first photovoltaic unit, and the thickness of the second photovoltaic unit is less than 20% of the thickness of the first photovoltaic unit.

4. A photovoltaic unit according to claim 1, characterized in that: The second photovoltaic unit in the unfolded state is arranged parallel to the first photovoltaic unit or forms a certain angle with the first photovoltaic unit.

5. A photovoltaic unit according to any one of claims 1 to 4, characterized in that: The first photovoltaic module includes a photovoltaic module encapsulated by two layers of front and rear glass or a photovoltaic module encapsulated by a single layer of front glass.

6. A photovoltaic unit according to claim 1, characterized in that: The number of the second photovoltaic components is 1, 2, 3 or 4.

7. A photovoltaic unit according to claim 6, characterized in that: The second photovoltaic component is a flat-plate structure, parallel to the first photovoltaic unit, and is pulled out and set in an installation position opened on the component. The length, width and thickness of each second photovoltaic component do not exceed the effective space of the installation position. The second photovoltaic component is pulled out and set in the corresponding installation position of the component through a slide rail.

8. A photovoltaic unit according to claim 6, characterized in that: The second photovoltaic component is a foldable structure. The second photovoltaic component is flipped upward by 180 degrees and stacked, and then pulled out and stored in the installation position.

9. A photovoltaic unit according to any one of claims 7 or 8, characterized in that: The component is also provided with a locking structure for fixing the stored second photovoltaic assembly.

10. A photovoltaic unit according to claim 6, characterized in that: The second photovoltaic component is a winding structure, one end of the second photovoltaic component is fixed on the component, and the other end of the second photovoltaic component is connected to an axis rod for winding. After the component is rolled out, it can be on the same plane as the first component, or form a certain angle such as hanging on two sides.

11. A photovoltaic unit according to claim 10, characterized in that: The shaft rod is circular or rectangular, and the length and thickness of the shaft rod do not exceed the length and thickness of the contour edge of the corresponding installation position of the component.

12. A photovoltaic unit according to any one of claims 10 or 11, characterized in that: It also includes a support assembly for supporting the second photovoltaic assembly, the support assembly includes two cross-arranged connecting rods and plug connectors docked with the connecting rods, there are two groups of plug connectors respectively arranged on the shaft and the component, and the two groups of plug connectors can dock with each other.

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