Double-layer engine hood of solar electric automobile
The dual-layer hood structure maximizes the area utilization of photovoltaic modules and enables automatic tracking of sunlight for power generation, solving the problems of insufficient photovoltaic module area and easy damage in traditional solar cars, and improving range efficiency and in-vehicle comfort.
Patent Information
- Application Number
- CN202423023673.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Traditional solar car hood designs fail to fully utilize the area of photovoltaic modules, affecting aesthetics and range efficiency. Furthermore, photovoltaic modules are easily damaged and cannot effectively reduce the temperature inside the car.
A double-layer hood structure was designed, in which the upper hood is integrated with lightweight photovoltaic modules, and the lower hood is integrated with photovoltaic modules, metal and heat insulation materials. The photovoltaic modules can automatically track sunlight to generate electricity by flipping the components, and can be hidden inside the hood when not in use to avoid damage.
The increased photovoltaic module area improved power generation efficiency, reduced interior temperature, maintained the car's aesthetics and structural integrity, and prevented damage to the photovoltaic modules.
Smart Images

Figure CN223508349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric vehicle technology, and in particular to a double-layer engine cover for solar-powered electric vehicles. Background Technology
[0002] Electric vehicles have long suffered from limitations such as short driving range, inadequate charging infrastructure, and high battery costs. In terms of driving range, pure electric vehicles generally have limited range on a full charge, requiring frequent stops to charge for long-distance travel, which severely restricts the convenience of travel; the distribution of charging facilities is uneven, with scarcity in remote areas and some old urban areas, and in cities, charging stations are often malfunctioning or occupied; battery costs make it difficult to reduce the price of the whole vehicle, and the subsequent replacement costs are also considerable.
[0003] With the launch of solar-powered electric vehicles such as the Prius, Lightyear 0, Sion, and Tianjin by Japanese automakers like Toyota, Dutch automaker Lightyear, German automaker Sono, and Chinese automaker IAT, the competitive landscape of the industry is gradually unfolding, and the pace of technological innovation is accelerating. However, this is also highlighting the common shortcomings of existing solar-powered vehicles in terms of structure, especially in the design and application of engine hoods.
[0004] Traditional solar-powered cars often treat the hood merely as a regular body panel, neglecting its potential as a large area for receiving sunlight. While some models do install photovoltaic (PV) modules on the hood, these ordinary PV modules severely impact the car's aesthetics, and due to their limited area and fixed installation angle, the generated electricity provides minimal benefit to range. Currently, colored PV modules are too inefficient, and their color options are insufficient, failing to meet the aesthetic requirements of automobiles. Furthermore, fixed PV modules cannot be installed on the windshield (national standards require a light transmittance of over 70%, which semi-transparent PV modules do not yet meet and are inefficient), significantly reducing the already limited effective PV area in solar-powered cars. Moreover, the interior temperature of a car parked outdoors in summer can reach as high as 80 degrees Celsius. 0 C. This severely impacts vehicle lifespan and human safety and comfort. Furthermore, prolonged exposure of photovoltaic modules to the external environment can damage them and shorten their lifespan. All these drawbacks necessitate innovative and optimized solar energy utilization structures on the hood to overcome the current predicament. Utility Model Content
[0005] This invention aims to at least partially solve one of the technical problems in the related art. Therefore, one objective of this invention is to propose a double-layered hood for a solar-powered electric vehicle, which increases the area of the photovoltaic modules and enables automatic sunlight tracking, effectively reducing the internal temperature of the vehicle body.
[0006] According to the present invention, a double-layer engine cover for a solar-powered electric vehicle includes a front end, a windshield is provided at the right end of the front end, a rotating shaft is movably connected inside the front end, a lower engine cover is fixed to the outer surface of the rotating shaft, an upper engine cover is movably connected to the outer surface of the rotating shaft, and flipping components are provided at both the front and rear ends of the top of the front end, and the upper and lower engine covers can be flipped simultaneously or independently.
[0007] Preferably, the flipping assembly includes a storage slot, and the flipping assembly is fixed to the inner walls of both the front and rear ends of the vehicle. The rotating end of the motor passes through the vehicle and is fixedly connected to a first connecting rod inside the storage slot. The other end of the first connecting rod is movably connected to a second connecting rod. A fixing plate is fixed to the outer surface of the upper hood and is movably connected to the second connecting rod. The upper hood can be flipped by the motor driving the first connecting rod and the second connecting rod.
[0008] Preferably, a first rotating shaft is movably connected inside the fixed plate, and one end of the second connecting rod is fitted and fixed to the surface of the first rotating shaft.
[0009] Preferably, a second rotating shaft is movably connected between the first connecting rod and the second connecting rod to achieve mutual movable connection.
[0010] Preferably, the upper hood is integrated with lightweight photovoltaic modules, with the photovoltaic surface facing downwards. The lower hood is integrated with lightweight photovoltaic modules, metal, heat insulation materials, etc., with the photovoltaic surface facing upwards.
[0011] Preferably, light sensors are installed on both the upper and lower surfaces of the upper hood, and a controller that can automatically control the motor is also installed, so that the upper hood can open automatically and automatically track sunlight to generate electricity.
[0012] The beneficial effects of this utility model are:
[0013] 1. By operating the flip-up component, the upper hood flips backward and finally stops at the windshield of the car. At this time, the photovoltaic modules of both the lower and upper hoods are exposed to sunlight, which can absorb solar energy to generate photovoltaic power, thereby increasing the area of the photovoltaic modules. At the same time, the photovoltaic modules are set inside the hood, saving roof space.
[0014] 2. At the same time, the hood can block the windshield of the car, preventing sunlight from shining directly into the car through the windshield, which can effectively reduce the temperature inside the car.
[0015] 3. When not in use, the photovoltaic modules can be stored inside the cover to prevent damage to them. This will not affect the vehicle's exterior design or increase wind resistance. Furthermore, the color of the upper surface of the hood is the same as other parts of the car, so it will not affect the car's aesthetics. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the double-layer engine hood of the solar-powered electric vehicle proposed in this utility model.
[0017] Figure 2 This is a top view of the double-layer engine hood of the solar-powered electric vehicle proposed in this utility model.
[0018] Figure 3 This is a schematic diagram of the internal structure of the front of the solar-powered electric vehicle with a double-layered engine hood proposed in this utility model.
[0019] Figure 4 This is a schematic diagram of the flip-up assembly structure for the double-layer hood of the solar-powered electric vehicle proposed in this utility model.
[0020] Figure 5 This is a schematic diagram of the surface structure of the upper engine cover of the double-layer engine cover for the solar-powered electric vehicle proposed in this utility model.
[0021] In the diagram: 1. Front of the vehicle; 2. Windshield; 3. Rotating shaft; 4. Lower hood; 5. Upper hood; 6. Flip-over assembly; 7. Storage compartment; 8. Motor; 9. First connecting rod; 10. Second connecting rod; 11. Fixing plate; 12. First rotating shaft; 13. Second rotating shaft. Detailed Implementation
[0022] Reference Figure 1-5 The solar-powered electric vehicle features a double-layered hood, including a front end 1. A windshield 2 is located at the right end of the front end 1. A rotating shaft 3 is movably connected inside the front end 1. A lower hood 4 is fixed to the outer surface of the rotating shaft 3, and an upper hood 5 is movably connected to the outer surface of the rotating shaft 3. Flip-up components 6 are located at both the front and rear ends of the top of the front end 1. The upper hood 5 is integrated with lightweight photovoltaic modules, with the photovoltaic surface facing down. The lower hood 4 is integrated with lightweight photovoltaic modules, metal, and heat-insulating materials, with the photovoltaic surface facing up. The lower hood 4 and the upper hood 5 can flip simultaneously or independently around the rotating shaft 3. The upper hood 5 can be flipped by driving the flip-up components 6 independently, while the lower hood 4 can be flipped manually. The upper surface of the upper hood 5 is the same color as other parts of the car, thus not affecting the car's aesthetics.
[0023] The lower hood 4 and the upper hood 5 are connected in parallel and connected to the MPPT (Maximum Power Point Tracking) controller. The voltage is then increased by the DC / DC boost controller to charge the electric vehicle's power battery.
[0024] The flipping assembly 6 includes a storage tank 7. The inner walls of both the front and rear ends of the vehicle head 1 are threaded with the flipping assembly 6. The rotating end of the motor 8 passes through the vehicle head 1 and is interference-connected to the first connecting rod 9 inside the storage tank 7. The other end of the first connecting rod 9 is movably connected to the second connecting rod 10. The outer surface of the upper hood 5 is fixed with a fixing plate 11 that is movably connected to the second connecting rod 10. The motor 8 drives the first connecting rod 9 to rotate, while simultaneously driving the second connecting rod 10 to move. The movement of the second connecting rod 10 causes the upper hood 5 to flip around the rotation axis 3 as the center, and finally stop at the windshield 2 of the car. At this time, both the lower hood 4 and the upper hood 5 are exposed to sunlight, which can absorb solar energy to realize photovoltaic power generation and power the power battery.
[0025] Installing photovoltaic modules on the lower surface of the lower hood 4 and the upper surface of the upper hood 5, respectively, and activating them by flipping the module 6, effectively prevents the photovoltaic modules from being exposed to the external environment when not in use. This reduces damage to the photovoltaic modules caused by external factors (such as weather, scratches, pollution, ultraviolet rays, rain, dust, etc.) and prevents them from aging and degrading in performance. When not in use, the photovoltaic modules are hidden inside the hood, which does not affect the vehicle's appearance design or increase wind resistance. Setting the photovoltaic modules inside the hood saves roof space, allowing the roof to be reserved for other functions or designs (such as vehicle antennas, solar sunroofs, etc.).
[0026] The fixed plate 11 is internally connected to a first rotating shaft 12. One end of the second connecting rod 10 is fitted and fixed to the surface of the first rotating shaft 12. The first connecting rod 9 and the second connecting rod 10 are movably connected by a second rotating shaft 13, and the first rotating shaft 12 and the second rotating shaft 13 are mutually movably connected.
[0027] Light sensors are installed on both the upper and lower surfaces of the upper hood 5, and a controller that can automatically control the motor 8 is also installed. This allows the upper hood 5 to open automatically, adjust its angle, and automatically track sunlight to generate electricity, so that it can absorb sunlight to the maximum extent under different weather conditions (such as sunlight angle, time of day, etc.) and improve the efficiency of photovoltaic power generation.
[0028] When this device is in use, if the car is parked and there is sufficient sunlight, the flip-up component 6 can be controlled to open the upper hood 5, ultimately positioning the upper hood 5 against the windshield 2. At this time, the photovoltaic modules of both the lower hood 4 and the upper hood 5 are exposed to sunlight, absorbing solar energy to generate photovoltaic power, which is then supplied to the car's power battery via the MPPT controller and boost controller. Simultaneously, the upper hood 5 effectively blocks the windshield 2, preventing direct sunlight from entering the car interior and effectively reducing the interior temperature. When the upper hood 5 is positioned against the windshield 2, to inspect the engine area, simply manually open the lower hood 4.
Claims
1. A double-layered engine hood for a solar-powered electric vehicle, characterized in that: The vehicle includes a front end (1), a windshield (2) is provided on the right end of the front end (1), a rotating shaft (3) is movably connected inside the front end (1), a lower engine cover (4) is fixed on the outer surface of the rotating shaft (3), an upper engine cover (5) is movably connected on the outer surface of the rotating shaft (3), and a flipping assembly (6) is provided at both the front and rear ends of the top of the front end (1).
2. The double-layer engine hood for a solar-powered electric vehicle according to claim 1, characterized in that: The flipping assembly (6) includes a storage slot (7). The flipping assembly (6) is fixed on the inner walls of both the front and rear ends of the vehicle head (1). The rotating end of the motor (8) passes through the vehicle head (1) and is fixedly connected to the first connecting rod (9) inside the storage slot (7). The other end of the first connecting rod (9) is movably connected to the second connecting rod (10). The outer surface of the upper engine cover (5) is fixed with a fixing plate (11) that is movably connected to the second connecting rod (10).
3. The double-layer engine hood for a solar-powered electric vehicle according to claim 2, characterized in that: The fixed plate (11) is movably connected to the first rotating shaft (12), and one end of the second connecting rod (10) is fitted and fixed to the surface of the first rotating shaft (12).
4. The double-layer engine hood for a solar-powered electric vehicle according to claim 2, characterized in that: A second rotating shaft (13) is movably connected between the first connecting rod (9) and the second connecting rod (10).
5. The double-layer engine hood for a solar-powered electric vehicle according to claim 1, characterized in that: The photovoltaic surface of the lower hood (4) faces upward, and the photovoltaic surface of the upper hood (5) faces downward.
6. The double-layer engine hood for a solar-powered electric vehicle according to claim 1, characterized in that: Light sensors are installed on both the upper and lower surfaces of the upper hood (5).