Lifting type multi-face unfolding roof solar power generation device and new energy vehicle

Abstract

The invention provides a lifting type multi-face unfolding roof solar power generation device and a new energy vehicle. The lifting type multi-face unfolding roof solar power generation device comprises a plurality of sections of electric lifting mechanisms, a top cover, a top photovoltaic panel, a plurality of flexible photovoltaic panels and a plurality of winding mechanisms. When the multi-section electric lifting mechanism extends, the storage space is opened, and the flexible photovoltaic panel is unfolded, and when the multi-section electric lifting mechanism retracts, the storage space is closed, and the winding mechanism winds the flexible photovoltaic panel. During parking charging, the power generation area is larger, the illumination utilization rate is high, the endurance pressure is effectively relieved, and urban energy conservation and solar energy supplementation under the condition that charging is not conducted in rural areas or in the field are achieved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology for new energy vehicles, and in particular to a liftable multi-faceted unfolding rooftop solar power generation device and a new energy vehicle. Background Technology

[0002] With the popularization and functional iteration of new energy vehicles, the requirements for vehicle range are constantly increasing. Existing solar power generation devices on the roof and under the vehicle are mostly single-planar structures. Due to the limited roof area, the power generation capacity is low, making it difficult to meet daily energy replenishment needs. Based on this, deployable solar power devices are mostly horizontally deployable, occupying space on the outside of the car after deployment.

[0003] In response to the problems of inconvenient daily charging, significant range anxiety, and difficulty in maximizing the use of solar resources when parked, this invention aims to overcome the shortcomings of the existing technologies mentioned above, achieve efficient power generation, improve energy replenishment efficiency, alleviate range pressure, realize urban energy conservation, and provide solar energy replenishment in rural areas or the wilderness where there is no charging available. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a liftable, multi-faceted unfoldable rooftop solar power generation device and a new energy vehicle. The flexible photovoltaic panels on the sides, once unfolded, provide a larger power generation area and higher solar energy utilization, effectively alleviating range anxiety, achieving urban energy conservation, and providing solar energy replenishment in rural or wilderness areas where charging is unavailable. The technical solution adopted by this invention is as follows: On one hand, the present invention provides a liftable multi-faceted unfolding rooftop solar power generation device, comprising: The multi-section electric lifting mechanism is arranged perpendicular to the bottom of the vehicle, with its bottom fixed to the bottom of the vehicle and its bottommost section extending through the roof. The top cover is located on top of the multi-section electric lifting mechanism, forming a storage space between it and the vehicle roof; Top photovoltaic panels are laid on the top surface of the roof; Several flexible photovoltaic panels are arranged laterally within the storage space and distributed around the multi-section electric lifting mechanism as the center; Several winding mechanisms are used to respectively wind up several of the flexible photovoltaic panels; Specifically, when the multi-section electric lifting mechanism extends, the storage space opens, and the flexible photovoltaic panel unfolds, when the multi-section electric lifting mechanism retracts, the storage space closes, and the winding mechanism winds up the flexible photovoltaic panel.

[0005] Furthermore, the winding mechanism includes: A scroll is arranged parallel to the bottom of the vehicle and rotated within the storage space via a bracket. A winding component for winding up the flexible photovoltaic panel on the reel.

[0006] Furthermore, the winding component is a coil spring, and the two sides of the coil spring abut against the top cover and the bracket respectively; Specifically, when the multi-section electric lifting mechanism extends, the torque of the coil spring increases; when the multi-section electric lifting mechanism retracts, the torque of the coil spring decreases.

[0007] Furthermore, the winding component is a motor, which is mounted on the top cover or bracket; When the multi-section electric lifting mechanism extends, the motor drives the roll shaft to rotate to one side; when the multi-section electric lifting mechanism retracts, the motor drives the roll shaft to rotate to the other side.

[0008] Furthermore, when the flexible photovoltaic panel is unfolded, its unfolded surface is arranged perpendicular to or at an angle to the bottom of the vehicle.

[0009] Furthermore, it also includes: A traction component, one end of which is connected to one segment of the multi-section electric lifting mechanism located above the vehicle roof, and the other end of which is connected to the vehicle roof; When the multi-section electric lifting mechanism extends, the pulling member pulls the multi-section electric lifting mechanism; when the multi-section electric lifting mechanism retracts, the pulling member closes.

[0010] Furthermore, the pulling component is a traction chain or a traction rope.

[0011] Furthermore, it also includes: A sealing flange is installed on the roof of the vehicle and is sealed to the bottommost segment of the multi-section electric lifting mechanism.

[0012] Furthermore, it also includes: An edge-sealing anti-collision strip is installed at the bottom edge of the top cover.

[0013] On the other hand, the present invention also provides a new energy vehicle, including the aforementioned liftable multi-faceted unfolding roof solar power generation device.

[0014] Advantages of this invention: When driving, the top photovoltaic panel generates electricity normally without affecting driving safety or wind resistance. When parked, it can be unfolded in multiple ways to form multiple power generation surfaces on the top and all four sides. The area of ​​the flexible photovoltaic panel after unfolding is not affected by the area of ​​the top cover, resulting in a larger power generation area, maximizing the use of solar resources, and improving energy replenishment efficiency. The storage space is closed to achieve a protective effect, improve service life and environmental adaptability, and can adapt to different climate conditions. At the same time, when stored, it occupies little height space on the roof, which does not affect the normal driving, parking and garage access of the vehicle. It is compatible with various new energy vehicles, especially autonomous vehicles. The specifications of related components can be adjusted according to the roof size, making it highly versatile. Flexible photovoltaic panels do not occupy space on the outside of the vehicle body when deployed, and do not interfere with the parking of other vehicles; The multi-section electric lifting mechanism operates smoothly and locks reliably. The winding mechanism ensures that the flexible photovoltaic panels are neatly stored and unfolded flat. Automatic lifting and unfolding / storage are achieved through electric control, which is conducive to layout and remote control, suitable for vehicle use scenarios, and is simple and convenient to operate.

[0015] The height of the roof, combined with the tilted unfolding area of ​​the flexible photovoltaic panel, enables passive dynamic light tracking. The height of the roof and the tilt angle of the flexible photovoltaic panel are adjusted according to the incident angle of external sunlight, so that the surface of the flexible photovoltaic panel is as perpendicular as possible to the incident direction of sunlight. This maintains the best photoelectric conversion efficiency at different times of day, in different seasons, or under different operating conditions, thus maximizing the absorption and utilization of solar energy resources. Attached Figure Description

[0016] Figure 1 This is a diagram showing the left and right storage spaces in their closed state.

[0017] Figure 2 This is a diagram showing the storage space open in the left and right directions.

[0018] Figure 3 This is a diagram showing the storage space in the front and back directions when it is open.

[0019] In the diagram: 1-Multi-section electric lifting mechanism, 101-Bottom flange, 2-Undercarriage, 3-Roof, 4-Top cover, 5-Top photovoltaic panel, 6-Flexible photovoltaic panel, 7-Roller, 8-Bracket, 9-Rewinding component, 10-Pull component, 11-Sealing flange, 12-Edge anti-collision strip. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] Please see the appendix Figure 1 and attached Figure 2This application first proposes a liftable multi-faceted unfolding rooftop solar power generation device and a new energy vehicle, including a multi-section electric lifting mechanism 1, a roof cover 4, a top photovoltaic panel 5, several flexible photovoltaic panels 6, and several winding mechanisms. The multi-section electric lifting mechanism 1 is arranged perpendicular to the vehicle floor, with its bottom fixed to the vehicle floor, and its bottommost segment penetrating the roof; the roof cover 4 is located on top of the multi-section electric lifting mechanism 1, forming a storage space between it and the vehicle roof; the top photovoltaic panel 5 is laid on the top surface of the roof cover 4; several flexible photovoltaic panels 6 are arranged laterally within the storage space, distributed around the multi-section electric lifting mechanism 1 as the center; several winding mechanisms are used to wind up several of the flexible photovoltaic panels 6 respectively; wherein, when the multi-section electric lifting mechanism 1 extends, the storage space opens, and the flexible photovoltaic panels 6 unfold; when the multi-section electric lifting mechanism 1 retracts, the storage space closes, and the winding mechanisms wind up the flexible photovoltaic panels 6.

[0022] As attached Figure 1 - Appendix Figure 3 As shown, the multi-section electric lifting mechanism 1 is centrally located relative to the vehicle's left-right direction and is fixed to the vehicle floor 2 via a base flange 101. The number of sections of the multi-section electric lifting mechanism 1 can be freely selected based on the lifting height and vehicle size. The multi-section electric lifting mechanism 1 can also be non-centrally located relative to the vehicle's front-rear direction. With the advancement of autonomous driving technology, many vehicle models have eliminated traditional rearview mirrors and rear windshields, replacing them with a combination of cameras and sensors for recognition. Especially in unmanned delivery vehicles and driverless vans, there is no need to consider the impact of the multi-section electric lifting mechanism 1 on the visual comfort of passengers.

[0023] The multi-section electric lifting mechanism 1 can be selected from various hollow telescopic rods in the prior art, and the gradual lifting of multiple sections is achieved by motor drive. Understandably, the cables required for the top photovoltaic panel 5 and the flexible photovoltaic panel 6 are routed through the cavities inside the multiple sections. When the lifting length of the multi-section electric lifting mechanism 1 is long, the portion of the cables required for the top photovoltaic panel 5 and the flexible photovoltaic panel 6 within the cavities inside the multiple sections can be configured as spiral cables to reduce the required space.

[0024] When the power generation device is used on long vehicles such as trucks or vans, the stability of the roof 4 can be increased by adding more electric lifting mechanisms 1 in the front and rear directions of the vehicle body.

[0025] During power generation, the top photovoltaic panel 5 and flexible photovoltaic panel 6 convert solar energy into electrical energy. The DC power is then transmitted to the inverter inside the vehicle via cables. The inverter boosts the voltage to a DC voltage range that matches the on-board charging system before supplying it to charge the new energy battery. The inverter can be a dedicated on-board inverter (1-2kW power) with a conversion efficiency of ≥95%, and the charge / discharge controller is an MPPT charge / discharge controller that supports wide voltage input.

[0026] Because the area and internal volume of the roof cover 4 are limited, while the space above the vehicle roof is unlimited, when the roof cover 4 is raised and the flexible photovoltaic panel 6 is unfolded, the higher the roof cover 4 is raised, the larger the unfolded area of ​​the flexible photovoltaic panel 6 becomes, and the larger the power generation area becomes. Compared with other photovoltaic panel combinations, the power generation area can be increased by 4-10 times. The multi-faceted power generation mode of the top and sides effectively increases the power generation area and effectively improves the power generation capacity, which can meet the daily commuting energy needs of vehicles, alleviate range anxiety, and reduce dependence on the power grid. It enables urban energy conservation and solar energy replenishment in situations where there is no charging, such as rural areas or wilderness where there are no charging facilities.

[0027] As attached Figure 1 - Appendix Figure 3 As shown, in one embodiment, the cross-sectional shape of the top cover 4 is roughly umbrella-shaped to prevent water accumulation. The outer edge width of the top cover 4 is no greater than the width of the roof 3, allowing for better coverage of various components within the storage space. When the storage space is closed, the top cover 4 engages with the roof 3, achieving dust protection for the storage space. The height of the generator above the vehicle is the height of the top cover 4. Appropriately reducing the height of the top cover 4 (e.g., 300mm) helps reduce wind resistance and mitigate the impact of garage height restrictions. The maximum lifting height of the generator can be adjusted according to actual needs, making it suitable for various new energy vehicles (including cars, vans, box trucks, trucks, RVs, and autonomous vehicles) and different parking scenarios' lighting requirements. When adapting, the specifications of relevant components can be adjusted according to the roof dimensions, demonstrating strong versatility.

[0028] In one embodiment, the length of the top photovoltaic panel 5 is adapted to the size of the top cover 4, and the width does not exceed the width of the top cover 4. It is installed on the top cover 4 by means of adhesive or rivet fixing. The top photovoltaic panel 5 is preferably a monocrystalline silicon solar panel encapsulated in tempered glass, which has high photoelectric conversion efficiency and is shock-resistant and scratch-resistant. During normal driving, it receives sunlight to generate electricity; when parked, it rises together with the top cover 4 to maintain a horizontal state and continues to generate electricity.

[0029] In one specific embodiment, the top of the top cover 4 is provided with a positioning groove for accommodating the top photovoltaic panel 5. The fixing and sealing effects are further improved by adding an O-ring between the side wall of the groove and the edge of the top photovoltaic panel 5.

[0030] In one specific embodiment, holes are drilled in the top cover 4 to facilitate cable routing for the top photovoltaic panel 5.

[0031] In other specific embodiments, a notch may be provided on the side of the top cover 4 near the rear of the vehicle to facilitate the discharge of impurities and rainwater.

[0032] As attached Figure 1 He Ru Figure 2 As shown, in one embodiment, four sets of winding mechanisms are provided, located in the front, back, left, and right directions of the multi-section electric lifting mechanism 1, with the photovoltaic surface of the flexible photovoltaic panel 6 facing outwards. Therefore, when the four flexible photovoltaic panels 6 are unfolded, they form four lateral power generation surfaces around the top photovoltaic panel 5, maximizing the utilization of solar resources, receiving sunlight from different angles, and significantly improving power generation.

[0033] In this embodiment, the flexible photovoltaic panel 6 has a photoelectric conversion efficiency of ≥20%, and its surface is covered with a scratch-resistant and wear-resistant coating. Due to its thinness, flexibility / rollability, it is rolled up on the winding mechanism, reducing the space occupied in the winding state.

[0034] As attached Figure 1 He Ru Figure 2 As shown, during driving, the flexible photovoltaic panel 6 is rolled up on the winding mechanism and hidden in the storage space. The storage space is closed to prevent the structure from being damaged by extreme weather (such as heavy rain, strong winds, and blizzards) and does not occupy extra space. The new energy vehicle generates electricity normally by relying on the top photovoltaic panel 5. When parking, after confirming that the parking position is safe, flat, and free of obstacles that block sunlight, the top cover 4 is raised, and the flexible photovoltaic panel 6 is unfolded. The new energy vehicle generates electricity by relying on the top photovoltaic panel 5 and the flexible photovoltaic panels 6 around the perimeter, covering sunlight from different angles.

[0035] In one embodiment, the winding mechanism includes a spool 7 and a winding member 9. The spool 7 is arranged parallel to the bottom of the vehicle and is rotatably mounted in the storage space via a bracket 8. The winding member 9 is used to wind up the flexible photovoltaic panel 6 on the spool 7. The spool 7 provides a carrier for winding up the flexible photovoltaic panel 6, and the winding member 9 provides power for winding up the flexible photovoltaic panel 6.

[0036] In one specific embodiment, one side of the flexible photovoltaic panel 6 is connected to a winding mechanism, which is mounted on the top cover 4, and the other side of the flexible photovoltaic panel 6 is mounted on the roof 3. By placing the winding mechanism on the top, the erosion of the winding mechanism by the environment (such as dust and rainwater) can be reduced, which helps to extend the service life of the winding mechanism.

[0037] In another specific embodiment, one side of the flexible photovoltaic panel 6 is connected to a winding mechanism, which is mounted on the roof 3, and the other side of the flexible photovoltaic panel 6 is mounted on the roof cover 4. By placing the winding mechanism at the bottom, the weight of the winding mechanism is borne by the roof 3, which enhances the stability of the vehicle body, achieves a better gravity balance effect, and improves the stress on the multi-section electric lifting mechanism.

[0038] In another specific embodiment, two winding mechanisms are connected to both sides of the flexible photovoltaic panel 6, and the two winding mechanisms are respectively installed on the roof 3 and the top cover 4. The simultaneous winding of the flexible photovoltaic panel 6 by the upper and lower winding mechanisms can speed up the winding process.

[0039] The installation location and number of winding mechanisms are determined by the vehicle body's counterweight requirements to balance the vehicle body's weight.

[0040] In this embodiment, the connection between the bracket 8 and the roof 3 or roof cover 4 is specifically as follows: pre-drilled holes are made on the roof 3 or roof cover 4, and the bracket 8 is fixed with bolts. The connection between the flexible photovoltaic panel 6 and the roof 3 or roof cover 4 is specifically as follows: the flexible photovoltaic panel 6 is fixed to the surface of the roof 3 or roof cover 4 using detachable methods such as mechanical clips or rivets, which are common in existing technologies. The connection between the flexible photovoltaic panel 6 and the roller 7 is specifically as follows: the flexible photovoltaic panel 6 is also fixed to the roller 7 using detachable methods such as mechanical clips or rivets, which are common in existing technologies.

[0041] When the flexible photovoltaic panel 6 is damaged, the multi-section electric lifting mechanism 1 is extended and the flexible photovoltaic panel 6 is unfolded, so that the flexible photovoltaic panel 6 can be disassembled and replaced.

[0042] In this embodiment, in any of the winding mechanisms, an L-shaped bracket 8 is provided at each end of the roll 7, and a bearing is installed between the bracket 8 and the roll 7 to reduce the frictional resistance of the roll 7.

[0043] In one specific embodiment, the winding component 9 is a coil spring, and the two sides of the coil spring are respectively connected to the top cover 4 and the bracket 8; wherein, when the multi-section electric lifting mechanism 1 extends, the torque of the coil spring increases, and when the multi-section electric lifting mechanism 1 retracts, the torque of the coil spring decreases.

[0044] Furthermore, the winding mechanism is based on the spring roller blind mechanism in the prior art. The preload of the spring can be adjusted according to actual needs. Under normal conditions (including during driving), the flexible photovoltaic panel 6 is wound onto the roller 7 to avoid the flexible photovoltaic panel 6 from loosening and causing abnormal noise or damage during driving, thereby reducing the number of electrical components used and lowering costs.

[0045] In another specific embodiment, the winding component 9 is a motor, which is mounted on the top cover 4 or the bracket 8; when the multi-section electric lifting mechanism 1 extends, the motor drives the winding shaft 7 to rotate to one side, and when the multi-section electric lifting mechanism 1 retracts, the motor drives the winding shaft 7 to rotate to the other side.

[0046] Preferably, the motor can be a geared motor, which, together with the extension of the multi-section electric lifting mechanism 1, slowly releases the flexible photovoltaic panel 6, avoiding the stretching or loosening of the flexible photovoltaic panel 6 due to the excessively fast or slow rotation speed of the roller 7.

[0047] Please see the appendix Figure 2 and attached Figure 3 In one embodiment, when the flexible photovoltaic panel 6 is unfolded, its unfolded surface is arranged perpendicular to or at an angle to the vehicle floor 2. Normally, the flexible photovoltaic panel 6 is unfolded perpendicular to the vehicle floor 2. Since the angle of sunlight is not perpendicular to the top photovoltaic panel 5, tilting the unfolded flexible photovoltaic panel 6 increases its illumination area.

[0048] When all four flexible photovoltaic panels 6 are arranged at an angle, they unfold to form a platform-like structure, which can further improve power generation efficiency while maintaining structural stability.

[0049] Preferably, when the two flexible photovoltaic panels 6 in the left and right directions of the vehicle body are arranged vertically and the two flexible photovoltaic panels 6 in the front and rear directions of the vehicle body are arranged at an angle, it is more suitable for vehicles with longer bodies.

[0050] To improve the stability of the entire power generation device when the multi-section electric lifting mechanism 1 extends, this application also includes a pulling member 10; one end of the pulling member 10 is connected to one of the sections of the multi-section electric lifting mechanism 1 located above the vehicle roof 3, and the other end is connected to the vehicle roof 3; when the multi-section electric lifting mechanism 1 extends, the pulling member 10 pulls the multi-section electric lifting mechanism 1, and when the multi-section electric lifting mechanism 1 retracts, the pulling member 10 retracts.

[0051] As attached Figure 1 and attached Figure 2 As shown, in one embodiment, the upper end of the traction member 10 is connected to the first segment (i.e., the attached segment) of the multi-section electric lifting mechanism 1 located above the vehicle roof 3. Figure 1 The second section of the multi-section electric lifting mechanism 1); when the top cover 4 is fastened to the roof 3, the pulling member 10 naturally hangs down and retracts into the storage space; the electric lifting mechanism 1 extends to its first section above the roof 3 (i.e., the attached section). Figure 1 When the second section of the electric lifting mechanism 1 is fully extended, the traction member 10 is fully straightened, and the state of the multi-section electric lifting mechanism 1 is maintained by the traction force, thereby improving stability.

[0052] Please see the appendix Figure 2 As is easily understood, when the tensioning member 10 is in the tensioned state, it is tilted. Therefore, when the flexible photovoltaic panel 6 is unfolded, the tensioning member 10 is arranged at an angle to the multi-section electric lifting mechanism 1. It should be noted that the tensioning member 10 in the tensioned state should avoid the unfolded surface of the flexible photovoltaic panel 6.

[0053] In some specific embodiments, the traction component 10 is a commonly used traction chain or traction rope. Both the traction chain and traction rope are flexible traction structures; when the upper cover 4 is fastened to the vehicle's upper shell 3, the traction chain or traction rope naturally hangs down and is retracted and hidden within the storage space.

[0054] In other specific embodiments, the traction member 10 is an assembly of a pull rod connected to a traction chain or traction rope. The lower end of the pull rod is rotatably connected to the roof 3, and the traction chain or traction rope is connected to a multi-section electric lifting mechanism 1.

[0055] In this embodiment, the number of traction components 10 is selected according to the size and weight of the entire power generation device and the vehicle model. Preferably, the lower end of the traction component 10 is fixed to the roof 3 by means of mechanical buckles, rivets or other detachable methods, and the upper end of the traction component 10 is also fixed to the multi-section electric lifting mechanism 1 by means of mechanical buckles, rivets or other detachable methods, so that a traction component 10 can be replaced in time when it is damaged.

[0056] To improve the sealed connection between the multi-section electric lifting mechanism 1 and the roof 3, as shown in the attached... Figure 1 As shown, this application also includes a sealing flange 11; the sealing flange 11 is disposed on the roof 3 and is sealed to the bottommost segment of the multi-section electric lifting mechanism 1.

[0057] To achieve sealed protection of the storage space, as shown in the attached document... Figure 1 As shown, this application also includes an edge-protecting anti-collision strip 12 disposed at the bottom edge of the top cover 4. The edge-protecting anti-collision strip 12 can also prevent the top cover 4 from impacting the roof 3, avoid deformation of the roof 3, and reduce vibration during driving.

[0058] On the other hand, this application also provides a new energy vehicle, including the aforementioned liftable multi-faceted unfolding roof solar power generation device. By installing this power generation device in conjunction with the vehicle floor 2 and roof 3, it can meet the power generation needs of various new energy vehicles (including automobiles, vans, box trucks, trucks, RVs, and autonomous vehicles). When adapted, the specifications of relevant components can be adjusted according to the roof size, making it highly versatile. The power supply source is expanded to solar energy and the power grid, which can significantly reduce grid energy consumption and carbon emissions, in line with the trend of green development of new energy vehicles.

[0059] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A retractable, multi-faceted, unfoldable rooftop solar power generation device, characterized in that, include: A multi-section electric lifting mechanism (1) is arranged perpendicular to the bottom of the vehicle, with its bottom fixed to the bottom of the vehicle and its bottommost section penetrating the roof of the vehicle. The top cover (4) is set on top of the multi-section electric lifting mechanism (1) and forms a storage space between it and the roof; Top photovoltaic panels (5) are laid on the top surface of the top cover (4); Several flexible photovoltaic panels (6) are arranged laterally within the storage space and distributed around the multi-section electric lifting mechanism (1); Several winding mechanisms are used to wind up several of the flexible photovoltaic panels (6) respectively. When the multi-section electric lifting mechanism (1) extends, the storage space opens, and the flexible photovoltaic panel (6) unfolds, when the multi-section electric lifting mechanism (1) retracts, the storage space closes, and the winding mechanism winds up the flexible photovoltaic panel (6).

2. The lifting multi-faceted unfolding rooftop solar power generation device as described in claim 1, characterized in that, The winding mechanism includes: A scroll (7) is arranged parallel to the bottom of the vehicle and rotated within the storage space via a bracket (8); A winding component (9) is used to wind up the flexible photovoltaic panel (6) on the reel (7).

3. The lifting multi-faceted unfolding rooftop solar power generation device as described in claim 2, characterized in that: The winding component (9) is a coil spring, and the two sides of the coil spring are respectively connected to the winding shaft (7) and the bracket (8). When the multi-section electric lifting mechanism (1) extends, the torque of the coil spring increases; when the multi-section electric lifting mechanism (1) contracts, the torque of the coil spring decreases.

4. The lifting multi-faceted unfolding rooftop solar power generation device as described in claim 2, characterized in that: The winding component (9) is a motor, which is mounted on the top cover (4) or the bracket (8); When the multi-section electric lifting mechanism (1) extends, the motor drives the reel (7) to rotate to one side; when the multi-section electric lifting mechanism (1) retracts, the motor drives the reel (7) to rotate to the other side.

5. The lifting multi-faceted unfolding rooftop solar power generation device as described in claim 1, characterized in that: When the flexible photovoltaic panel (6) is unfolded, its unfolded surface is arranged perpendicular to or at an angle to the bottom of the vehicle.

6. The lifting multi-faceted unfolding rooftop solar power generation device as described in claim 1, characterized in that, Also includes: The traction component (10) has one end connected to one of the segments of the multi-section electric lifting mechanism (1) located above the vehicle roof, and the other end connected to the vehicle roof. When the multi-section electric lifting mechanism (1) extends, the pulling member (10) pulls the multi-section electric lifting mechanism (1); when the multi-section electric lifting mechanism (1) retracts, the pulling member (10) closes.

7. The lifting multi-faceted unfolding rooftop solar power generation device as described in claim 6, characterized in that: The traction component (10) is a traction chain or traction rope.

8. The liftable multi-faceted unfolding rooftop solar power generation device as described in any one of claims 1-7, characterized in that, Also includes: A sealing flange (11) is provided on the roof of the vehicle and is sealed to the bottom section of the multi-section electric lifting mechanism (1).

9. The liftable multi-faceted unfolding rooftop solar power generation device as described in any one of claims 1-7, characterized in that, Also includes: An edge-protecting strip (12) is provided at the bottom edge of the top cover (4).

10. A new energy vehicle, characterized in that, This includes a retractable, multi-faceted rooftop solar power generation device.

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