Vehicle-mounted liftable photovoltaic sunshade and power generation integrated device

Abstract

The invention relates to a vehicle-mounted liftable photovoltaic sunshade and power generation integrated device which comprises a mounting frame, a reflecting layer, a power generation layer and a heat insulation layer are sequentially mounted on the mounting frame from outside to inside, a hook is arranged at the top of the mounting frame, and a winding assembly for driving the mounting frame to descend into a vehicle door is arranged at the bottom of the mounting frame; wherein the reflecting layer is a high-reflectivity nano ceramic coating; the power generation layer is a flexible crystalline silicon or thin-film solar cell unit; the heat insulation layer is an aerogel felt or a vacuum heat insulation plate; the outer side reflecting layer reflects more than 85% of solar radiation, and heat input is reduced from the source; the middle air layer takes away 30% of residual heat on the surface of the photovoltaic panel through natural convection; the heat flow conducted into the automobile is reduced by more than 60% through the inner side heat insulation layer, and the temperature rise rate in the automobile can be reduced by 40%-50% compared with a traditional sun shield.

Description

Technical Field

[0001] This invention relates to the field of automotive energy conservation and temperature control technology, and in particular to an integrated vehicle-mounted liftable photovoltaic sunshade power generation device. Background Technology

[0002] Existing automotive sunshades suffer from two major problems: First, traditional built-in sunshades only block some direct sunlight and cannot prevent solar radiation from being conducted into the car through the glass, leading to a significant greenhouse effect. Second, while some external photovoltaic sunshades have power generation capabilities, they are not optimized for heat insulation, allowing heat absorbed by the photovoltaic panels to easily transfer into the car through the glass, resulting in limited cooling effects. Therefore, there is an urgent need for an external sunshade device that can both efficiently utilize solar energy and significantly reduce the greenhouse effect through structural optimization.

[0003] Patent (CN218085028U) discloses an automatically lifting car sunshade, which achieves sunshade function through automatic lifting devices for the front and rear windshields and side windshields, and has dual heat insulation and light blocking effects. Although the device achieves automatic opening and closing of the sunshade and adaptability to multiple scenarios, it has the following drawbacks: lack of energy conversion capability: it only has a sunshade function and does not integrate components such as photovoltaic panels, so it cannot use solar energy to power the vehicle; the heat insulation mechanism is outdated, using internal sunshade, which cannot effectively block infrared radiation, relying on physical blocking for heat insulation, and does not use professional heat insulation materials such as high-reflective coatings and aerogels, so it cannot block the heat conduction path of the glass, and the effect of improving the greenhouse effect in the car is limited; the structure ages over time, the rope cannot be replaced separately, the structure is complex and takes up space: the front and rear windshield sunshade devices need to be installed in the inner box of the window, and the side windshield devices rely on the interior door panel for fixation, which increases the complexity of the interior structure and affects space utilization; the operation is not convenient: the side windshield sunshade needs to be manually fixed by hooking around the glass, which cannot respond quickly while driving and is cumbersome to operate. Patent (CN218570127U) discloses an outdoor liftable photovoltaic module. It achieves automatic lifting and auxiliary support of the photovoltaic panel through casters at the bottom of the frame, side support components, and an internal lifting component, solving the problems of fixed structures and susceptibility to damage in harsh weather conditions in existing solar modules. Although the device has lifting and mobility functions, it has the following shortcomings: the device only focuses on lifting and transporting the photovoltaic panel and does not integrate composite functions such as energy storage, shading, and temperature control, thus failing to meet the diverse needs of outdoor scenarios (such as vehicle-mounted or emergency power supply). The lifting drive relies on a hydraulic system, which has high energy consumption and cost. Using multi-stage hydraulic rods to drive the lifting component requires an additional hydraulic power source, increasing the equipment weight and energy consumption. Furthermore, the hydraulic system has high maintenance costs, making it unsuitable for lightweight scenarios (such as vehicle-mounted). The support components rely on manually adjustable screws and feet for fixation, resulting in insufficient stability in strong winds or complex terrain. There is a conflict between space constraints and portability; the frame needs to accommodate multi-stage lifting components and a toolbox, leading to a large overall size. Movement relies on casters, making it difficult to adapt to narrow spaces (such as inside car doors). Even when folded up, it still requires external storage space and cannot be fully integrated into the vehicle's structure. Furthermore, thermal management and power generation efficiency optimization are not addressed; the photovoltaic panels lack heat dissipation design, making them prone to temperature rise and reduced power generation efficiency in high-temperature environments. Without a reflective or insulating layer, it cannot prevent heat absorption from being conducted to the surrounding environment, potentially affecting the stability of adjacent equipment (such as vehicle batteries).

[0004] Overall, while existing external solar photovoltaic panel technology has made some progress in structural design and functional integration, bottlenecks remain in terms of adaptability to complex environments and performance optimization, resulting in limited greenhouse effect reduction. Environmental adaptability and automation are low, space utilization and portability are insufficient, and the fixed structures installed externally or inside the vehicle occupy extra space, requiring external storage after storage, and cannot be integrated seamlessly with vehicle structures such as doors. These issues make it difficult for existing external solar photovoltaic panels to meet the actual needs of automotive scenarios in terms of efficient heat insulation, power generation stability, ease of operation, and environmental adaptability. In summary, how to achieve efficient heat insulation and stable power generation through structural innovation and integrated design has become an urgent problem for those skilled in the art. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This invention is a vehicle-mounted, liftable photovoltaic sunshade and power generation integrated device, comprising: The mounting frame is provided with a reflective layer, a power generation layer and a heat insulation layer installed sequentially from the outside to the inside. The top of the mounting frame is provided with a hook and the bottom of the mounting frame is provided with a retracting assembly that drives the mounting frame to descend into the car door. The reflective layer is a high-reflectivity nano-ceramic coating; The intermediate power generation layer is a flexible crystalline silicon or thin-film solar cell unit; The insulation layer is an aerogel felt or a vacuum insulation board.

[0006] Furthermore, when the mounting frame is hung on the vehicle window via the hook, a convection gap is formed between the hook and the vehicle window.

[0007] Furthermore, the winding assembly includes: two fixed rods fixed inside the vehicle door and arranged horizontally opposite each other, each fixed rod being fitted with a winding rod, and the winding rod being connected to the corresponding fixed rod via a coil spring assembly; One end of each of the two winding ropes is connected to the mounting frame, and the other end is connected to the corresponding winding rod.

[0008] Furthermore, a connecting terminal is provided on one end of the winding rope, and a fixing member is provided on the end of the winding rod near the other winding rod. The fixing member is provided with a cavity for installing the connecting terminal.

[0009] Furthermore, the coil spring assembly includes: a housing, the middle of which is fixedly connected to the end of the fixing rod; a coil spring is disposed inside the housing; one end of the inner side of the coil spring is fixed to the housing, and the other end is provided with a latch; the end of the winding rod is rotatably connected to the housing; and the inner wall of the winding rod is provided with a protrusion that is positioned with the latch.

[0010] The beneficial effects of this invention are: The triple cooling mechanism: the outer reflective layer reflects more than 85% of solar radiation, reducing heat input at the source; the middle air layer removes 30% of the residual heat from the photovoltaic panel surface through natural convection; and the inner heat insulation layer reduces the heat flow into the vehicle by more than 60%, which can reduce the rate of temperature rise in the vehicle by 40%-50% compared to traditional sunshades.

[0011] Improved power generation efficiency: Due to the setting of the convection gap, the temperature rise of the photovoltaic panel is reduced, and the power generation efficiency is increased by 5%-8%. With the angle adjustment function, the average daily power generation can be increased by 15%-20% throughout the year.

[0012] Highly adaptable to various installations: The hook design is suitable for the power windows of mainstream car models (glass thickness 4-8mm), and is compatible with differences in window thickness. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a structural schematic diagram of this embodiment; Figure 2 This is a cross-sectional view of the reflective layer, the power generation layer, and the heat insulation layer; Figure 3 This is a side view of the embodiment in conjunction with the car door; Figure 4 This is a diagram showing the alignment of this embodiment with the vehicle window; Figure 5 This is a diagram showing the fit between the connecting terminals and the fixing components; Figure 6 This is a diagram showing the fit between the winding rod and the fixing component; Figure 7 This is a schematic diagram of a coil spring assembly. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0016] See Figure 1-7 This embodiment is a vehicle-mounted liftable photovoltaic sunshade and power generation integrated device, including: a mounting frame 1, wherein a reflective layer 11, a power generation layer 12, and a heat insulation layer 13 are sequentially installed on the mounting frame 1 from the outside to the inside; a hook 2 is provided on the top of the mounting frame 1; and a retractable assembly 3 is provided on the bottom of the mounting frame 1 to drive the mounting frame 1 down into the vehicle door 01; wherein the reflective layer 11 is a high-reflectivity nano-ceramic coating; the intermediate power generation layer 12 is a flexible crystalline silicon or thin-film solar cell unit; and the heat insulation layer 13 is an aerogel felt or a vacuum insulation panel; In this embodiment, the rigid structure of the mounting frame 1 is achieved by the retracting assembly 3 to automatically descend relative to the car door 01. The top of the mounting frame 1 is provided with a hook 2. By hanging the hook 2 on the top of the car window 02, the car window 02 and the mounting frame 1 can rise synchronously. Once the hook 2 is detached from the car window 02, the mounting frame 1 will automatically descend. The mounting frame 1 is equipped with a reflective layer 11, a power generation layer 12, and a heat insulation layer 13. Specifically, the outer reflective layer 11 adopts a high reflectivity nano-coating (reflectivity ≥90%), preferably a titanium dioxide-based ceramic coating, which can reflect 800-2500nm near-infrared radiation into the atmospheric environment, reducing the heat absorption of the photovoltaic panel itself. Intermediate power generation layer 12: Composed of flexible crystalline silicon / thin film solar cell units, electrically connected through FPC circuit board, with conductive pull cord connection terminals reserved at the edge; Inner insulation layer 13: made of aerogel felt or vacuum insulation board, 0.5-2mm thick, with a thermal conductivity ≤0.013W / (m²). K) forms a thermal barrier to block heat from being conducted into the vehicle.

[0017] In some possible embodiments, when the mounting frame 11 is hung on the window 02 by the hook 2, a convection gap 03 is formed between the hook 2 and the window 02; In this embodiment, the convection gap 03 can remove heat from the surface of the power generation layer through natural wind, thereby improving the power generation efficiency of the power generation layer.

[0018] In some possible embodiments, the winding assembly 3 includes: two fixed rods 31 fixed inside the door 01 and arranged horizontally opposite each other, each fixed rod 31 is covered with a winding rod 32, and the winding rod 32 is connected to the corresponding fixed rod 31 by a coil spring assembly; one end of the two winding ropes 33 is connected to the mounting frame 1, and the other end is connected to the corresponding winding rod 32. In this embodiment, the retractable rod can rotate relative to the fixed rod. When the mounting frame rises to the upper position, the coil spring assembly is in a tensioned state. When the mounting frame descends into the car door, the coil spring assembly is in a normal state. The purpose of setting up two retractable rods on the left and right is that, since the upper surface of the car window is curved, the travel path lengths on both sides are inconsistent during the lifting and lowering of the mounting frame. Therefore, setting up two retractable rods and two fixed rods ensures that the mounting frame is rolled up smoothly.

[0019] In some possible embodiments, a section of the winding rope 33 is provided with a connecting terminal 34, and a fixing member 35 protrudes from the end of the winding rod 32 near the other winding rod 33, and a cavity 36 is provided in the fixing member 35 for installing the connecting terminal 34. In this embodiment, this configuration allows for the detachment of the winding rope from the take-up rod, enabling the replacement of the winding rope.

[0020] In some possible embodiments, the coil spring assembly 4 includes: a housing 41, the middle part of which is fixedly connected to the end of the fixing rod 31; a coil spring 42 is disposed inside the housing 41; one end of the inner side of the coil spring 42 is fixed to the housing 41, and the other end is provided with a latch 43; the end of the winding rod 32 is rotatably connected to the housing 41; and the inner wall of the winding rod 32 is provided with a protrusion that is positioned with the latch 43. In this embodiment, the fixing rod is connected to the center of the box, the winding rod is rotatably connected to the box, one end of the coil spring is connected to the box, and the other end of the coil spring is connected to the winding rod through the engagement of the snap-fit. This realizes the solution of connecting the fixing rod and the winding rod through the coil spring assembly.

[0021] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A vehicle-mounted, liftable photovoltaic sunshade and power generation integrated device, characterized in that, include: The mounting frame is provided with a reflective layer, a power generation layer and a heat insulation layer installed sequentially from the outside to the inside. The top of the mounting frame is provided with a hook and the bottom of the mounting frame is provided with a retracting assembly that drives the mounting frame to descend into the car door. The reflective layer is a high-reflectivity nano-ceramic coating; The power generation layer is a flexible crystalline silicon or thin-film solar cell unit; The insulation layer is an aerogel felt or a vacuum insulation board.

2. The vehicle-mounted liftable photovoltaic sunshade power generation integrated device according to claim 1, characterized in that, When the mounting frame is hung on the car window via the hook, a convection gap is formed between the hook and the car window.

3. The vehicle-mounted liftable photovoltaic sunshade power generation integrated device according to claim 1, characterized in that, The winding assembly includes: two fixed rods fixed inside the vehicle door and arranged horizontally opposite each other, each fixed rod is covered with a winding rod, and the winding rod is connected to the corresponding fixed rod by a coil spring assembly; One end of each of the two winding ropes is connected to the mounting frame, and the other end is connected to the corresponding winding rod.

4. The vehicle-mounted liftable photovoltaic sunshade power generation integrated device according to claim 3, characterized in that, One end of the winding rope is provided with a connecting terminal, and a fixing member is provided at the end of the winding rod near the other winding rod. The fixing member is provided with a cavity for installing the connecting terminal.

5. The vehicle-mounted liftable photovoltaic sunshade power generation integrated device according to claim 3, characterized in that, The coil spring assembly includes: a housing, the middle of which is fixedly connected to the end of the fixing rod; a coil spring is disposed inside the housing; one end of the inner side of the coil spring is fixed to the housing, and the other end is provided with a latch; the end of the winding rod is rotatably connected to the housing; and the inner wall of the winding rod is provided with a protrusion that is positioned with the latch.

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