A mirror-reflective multilayer photovoltaic car roof component and its working method

Abstract

The application discloses a mirror reflection laminated photovoltaic roof assembly and a working method thereof. The mirror reflection laminated photovoltaic roof assembly comprises an upper photovoltaic assembly and a lower photovoltaic assembly. The upper photovoltaic assembly is located at the upper portion of the lower photovoltaic assembly and can move up and down. A mirror reflection assembly is arranged between the upper photovoltaic assembly and the lower photovoltaic assembly. The mirror reflection assembly can extend from between the two photovoltaic assemblies and can rotate. The mirror reflection assembly can reflect light onto the lower photovoltaic assembly. The upper photovoltaic assembly and the lower photovoltaic assembly can both generate electricity. The upper photovoltaic assembly and the lower photovoltaic assembly are arranged. The upper photovoltaic assembly has a lifting function, fully utilizes the space in the vertical direction of the automobile, can avoid the influence of the automobile on other vehicles due to the excessive occupation of the horizontal space, and simultaneously increases the area of the photovoltaic assembly that can be laid on the roof and improves the power of the overall photovoltaic assembly.

Description

Technical Field

[0001] This invention relates to the field of vehicle roof photovoltaic technology, specifically to a mirror-reflective multilayer photovoltaic vehicle roof component and its working method. Background Technology

[0002] With the widespread use of new energy vehicles, especially pure electric vehicles, one of the problems is their range anxiety. Long-term charging via charging stations is inconvenient for pure electric vehicles. Photovoltaic technology, however, can infinitely convert sunlight into electricity, and many car models offer solar roof options.

[0003] Rooftop solar panels have long been a focus of attention due to their ability to replenish vehicle energy in real time during the day and their green and environmentally friendly characteristics. A new energy vehicle equipped with rooftop solar panels can charge the car every moment when there is sunlight, which can effectively reduce the frequency of car charging and alleviate range anxiety. However, due to its own performance and cost defects, it has not been widely used.

[0004] The performance defects of rooftop photovoltaic modules include: (1) The photoelectric conversion efficiency of photovoltaic cells is currently low (the highest photoelectric conversion efficiency of mass-produced monocrystalline silicon cells is around 23%), resulting in a low overall power of the battery modules installed in the vehicle, which is difficult to play a significant role in the vehicle's range. (2) The space utilized on the roof of the car is small. Even if the entire roof is covered, the overall installed power is only a few hundred watt-hours, and the power generation in a day has a limited effect on the vehicle. However, this problem is generally solved by installing multiple photovoltaic modules, such as foldable photovoltaic modules or vehicle roof photovoltaic modules. But this also brings problems. When photovoltaic charging is needed, the photovoltaic modules need to be unfolded one by one, which will occupy the surrounding environmental space and affect other vehicles. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a mirror-reflective multilayer photovoltaic roof assembly and its working method, which can increase the area of ​​photovoltaic components originally installed on the car roof and improve the working efficiency of the whole vehicle photovoltaic system.

[0006] The technical solution of the present invention is as follows:

[0007] In a first aspect of the present invention, a mirror-reflective multilayer photovoltaic (PV) roof assembly is provided, comprising an upper PV module and a lower PV module, wherein the upper PV module is located above the lower PV module and is movable vertically; a mirror-reflective component is disposed between the upper and lower PV modules, the mirror-reflective component extending from between the two PV modules and being rotatable; the mirror-reflective component is capable of reflecting light onto the lower PV module, and both the upper and lower PV modules are capable of generating electricity.

[0008] In some embodiments of the present invention, the upper photovoltaic module includes, from top to bottom, high-transparency white glass, silicon crystal solar cells, tempered glass, and a mirror-reflective film.

[0009] In some embodiments of the present invention, the bottom of the upper photovoltaic module is supported on the roof of the car by a plurality of vertical motion mechanisms, wherein the vertical motion mechanisms are electric push rods.

[0010] In some embodiments of the present invention, the lower photovoltaic module includes high-transparency white glass, silicon crystal solar cells and tempered glass arranged sequentially from top to bottom, and the bottom of the lower photovoltaic module is fixed to the roof of a car.

[0011] In some embodiments of the present invention, the mirror reflection assembly includes a mirror reflector and a rotating mechanism. The rotating mechanism includes a connecting rod, a slider, a screw, and a micro motor. The mirror reflector is connected to one end of the connecting rod via a universal joint, and the other end of the connecting rod is connected to the slider via a universal joint. The slider is mounted on a slide rail and is connected to the screw. The screw is driven by the micro motor.

[0012] In some embodiments of the present invention, the mirror reflector is mounted on the upper surface of the lower photovoltaic module via hinges, and two hinges are provided.

[0013] In some embodiments of the present invention, the mirror reflector is driven to flip by two sets of rotating mechanisms, and the two connecting rods of the two sets of rotating mechanisms are respectively connected to the middle position of two opposite sides of the mirror reflector.

[0014] In some embodiments of the present invention, at least two sets of the specular reflection assembly are provided.

[0015] In some embodiments of the present invention, the mirror reflection component is mounted on the upper surface of the lower photovoltaic component near the edge.

[0016] In a second aspect of the invention, a method for operating a mirror-reflective multilayer photovoltaic vehicle roof assembly is provided, comprising:

[0017] When there is natural sunlight and the car is in motion, the upper and lower photovoltaic modules are closely attached, and the upper photovoltaic module directly uses natural sunlight to generate electricity to replenish the car's energy.

[0018] When the car is parked, the upper photovoltaic module is driven to move upward by a vertical motion mechanism. The mirror reflector of the mirror reflector is driven to flip outward by a rotation mechanism. The light at a special angle directly shines on the lower photovoltaic module, enabling it to work and generate electricity. Other natural light shines on the mirror reflector and is reflected by the mirror reflector to the mirror reflector film at the bottom of the upper photovoltaic module. At this time, the light source is reflected a second time by the mirror reflector film to the lower photovoltaic module, and the lower photovoltaic module works to generate electricity.

[0019] One or more technical solutions of the present invention have the following beneficial effects:

[0020] (1) The mirror-reflective stacked photovoltaic roof assembly provided by the present invention is provided with an upper photovoltaic assembly and a lower photovoltaic assembly. The upper photovoltaic assembly has a lifting function. When the vehicle is parked and uses sunlight to replenish energy, it makes full use of the vertical space of the car. This avoids the car occupying too much horizontal space and affecting other vehicles. At the same time, it increases the area on the roof where photovoltaic assemblies can be laid and improves the overall power of the photovoltaic assembly.

[0021] (2) The mirror-reflective stacked photovoltaic roof assembly provided by the present invention has a mirror-reflective assembly set between the upper photovoltaic assembly and the lower photovoltaic assembly. At the same time, a mirror-reflective film is set at the bottom of the upper photovoltaic assembly. The mirror-reflective plate of the mirror-reflective assembly can extend from between the two photovoltaic assemblies under the drive of the rotating mechanism. When light shines on the mirror-reflective plate, the light is reflected by the mirror-reflective plate to the mirror-reflective film at the bottom of the upper photovoltaic assembly. At this time, the light source is reflected to the lower photovoltaic cell assembly by the secondary reflection of the mirror-reflective film. In this way, the lower photovoltaic cell assembly can generate electricity through mirror-reflected light and light from other angles, realizing the simultaneous power generation of the upper and lower photovoltaic assemblies. This increases the area of ​​the photovoltaic assembly originally installed on the car roof and greatly improves the working efficiency of the whole vehicle photovoltaic system.

[0022] (3) The upper and lower photovoltaic modules in this invention are mainly composed of high-efficiency crystalline silicon solar cells and transparent glass or transparent organic material substrates, which have the characteristics of long service life and strong mechanical resistance to external pressure. The main factors affecting the power of a photovoltaic system are the photoelectric conversion efficiency of the solar cells used and the area of ​​the overall system. The larger the area, the greater the overall system power. This application improves the power of the photovoltaic modules installed in the vehicle by designing upper and lower photovoltaic modules, so that the car can obtain more photovoltaic energy. At the same time, this vertical structure will not occupy the surrounding environmental space and affect other vehicles and pedestrians, thereby increasing the car's range. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the composition structure of the mirror-reflective multilayer photovoltaic roof assembly of the present invention;

[0024] Figure 2 This is a schematic diagram of the upper photovoltaic module of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the mirror reflection component of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the lower photovoltaic module of the present invention;

[0027] Figure 5 This is a schematic diagram of the mirror-reflective multilayer photovoltaic roof assembly of the present invention in use.

[0028] In the diagram: 1. Upper photovoltaic module; 2. Mirror reflective module; 3. Lower photovoltaic module; 4. Vertical motion mechanism; 11. First high-transparency white glass; 12. Second silicon crystal solar cell; 13. Second tempered glass; 14. Mirror reflective film; 21. Micro motor; 22. Screw; 23. Connecting rod; 24. Connecting rod, 25. Slide rail; 26. Universal joint; 27. Mirror reflective plate; 28. Hinge; 31. Second high-transparency white glass; 32. Second silicon crystal solar cell; 33. Second tempered glass; 41. Supporting connecting rod; 42. Motor. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Example 1

[0031] In a typical embodiment of the present invention, a mirror-reflective multilayer photovoltaic vehicle roof assembly is proposed, such as... Figure 1 As shown, the system includes an upper photovoltaic module 1 and a lower photovoltaic module 3. The upper photovoltaic module 1 is located above the lower photovoltaic module 3 and can move up and down. A mirror reflector 2 is provided between the upper photovoltaic module 1 and the lower photovoltaic module 3. The mirror reflector 2 can extend from between the two photovoltaic modules and can rotate. The mirror reflector 2 can reflect light onto the lower photovoltaic module 3. Both the upper photovoltaic module 1 and the lower photovoltaic module 3 can generate electricity.

[0032] like Figure 2As shown, the upper photovoltaic module 1 includes a first high-transparency white glass 11, a first silicon crystal solar cell 12, a first tempered glass 13, and a mirror reflective film 14 arranged sequentially from top to bottom. The upper high-transparency white glass and the lower tempered glass sandwich several silicon crystal solar cells in the middle and finally encapsulate them into a whole to form the upper photovoltaic module. The bottom of the upper photovoltaic module is also attached with a high-efficiency mirror reflective film 14 for reflecting light.

[0033] In this embodiment, the bottom of the upper photovoltaic module 1 is supported on the car roof by multiple vertical motion mechanisms 4. Each vertical motion mechanism 4 is an electric push rod and includes a support link 41 and a motor 42. The motor 42 drives the support link 41 to move up and down, thereby moving the upper photovoltaic module 1 up and down. Those skilled in the art can also choose other lifting structures to achieve the vertical movement of the upper photovoltaic module in the vertical plane, such as lifting cylinders and lifting hydraulic cylinders, as long as the vertical movement of the upper photovoltaic module can be achieved. In one specific embodiment, four sets of vertical motion mechanisms are provided, supporting the four corners of the upper photovoltaic module respectively.

[0034] like Figure 3 As shown, the mirror reflection assembly includes a mirror reflector 27 and a rotating mechanism. The rotating mechanism includes a connecting rod 23, a slider 24, a screw 22, and a micro motor 21. The mirror reflector 27 is connected to one end of the connecting rod 23 via a universal joint 26, and the other end of the connecting rod 23 is connected to the slider 24 via a universal joint 26. The slider 24 is mounted on a slide rail 25 and is connected to the screw 22. The screw 22 is driven by the micro motor 21. The mirror reflector 24 is mounted on the upper surface of the lower photovoltaic module 3 via hinges 28, of which there are two. The specific implementation process is as follows: the screw 22 is driven by the micro motor 21 to move. When the screw 23 is driven by the micro motor 21, it pushes the slider 24 to move on the connecting rod slide rail 25, causing the connecting rod 23 to deflect. Finally, the mirror reflector 24 is rotated by the hinges 28.

[0035] In this embodiment, in order to improve the stability of the mirror reflector 24 during rotation, the mirror reflector 24 is driven to flip by two sets of rotating mechanisms. The two connecting rods 23 of the two sets of rotating mechanisms are respectively connected to the middle position of the two opposite sides of the mirror reflector 24, so as to support the mirror reflector and drive the mirror reflector to rotate.

[0036] like Figure 4As shown, the lower photovoltaic module 3 includes a second high-transparency white glass 31, a second silicon crystal cell 32, and a second tempered glass 33 arranged sequentially from top to bottom. The bottom of the lower photovoltaic module 3 is fixed to the roof of a car. The upper high-transparency white glass and the lower tempered glass sandwich the silicon crystal cell in the middle and finally encapsulate it into a whole lower photovoltaic cell module, and its overall size is the same as that of the upper photovoltaic cell module.

[0037] In this embodiment, at least two sets of the mirror reflection component 2 are provided, and multiple sets can also be provided as needed.

[0038] In this embodiment, the mirror reflector 2 is installed on the upper surface of the lower photovoltaic module 1 near the edge, so that the mirror reflector can extend more easily from between the upper and lower photovoltaic modules to better reflect sunlight.

[0039] The working principle of the mirror-reflective multilayer photovoltaic roof assembly provided in this embodiment is as follows:

[0040] When there is natural light and the car is in motion, the upper and lower photovoltaic modules are closely attached. The upper photovoltaic cell module, which can move vertically, is located at the top of the car body and can directly use natural light to generate electricity to replenish the car's energy.

[0041] When the vehicle is parked, the motor of the vertically movable component pushes the support link upward, causing the upper vertically movable photovoltaic module to move upward. When it reaches its limit position, the micro-motor of the side mirror reflector drives the screw to move outward. At this time, the link will rotate outward and inward due to the outward movement of the screw, simultaneously causing the connected mirror reflector to rotate outward. At this time, a small portion of light at a special angle can directly shine on the lower photovoltaic module to enable it to generate electricity, while the rest of the natural light shines on the mirror reflector. The light is reflected by the mirror reflector onto the mirror reflector film at the bottom of the upper vertically movable photovoltaic module. The light source is then reflected a second time by the mirror reflector film onto the lower photovoltaic module. In this way, the lower photovoltaic module can generate electricity through mirror reflection and other angles of light.

[0042] At this point, the overall roof assembly is in the following condition: Figure 5 As shown, this configuration allows both the upper, vertically movable photovoltaic (PV) modules and the lower PV modules to simultaneously receive natural sunlight and generate electricity to supplement the vehicle's energy. This effectively increases the area of ​​the PV modules that would otherwise be installed on the car roof, significantly improving the overall efficiency of the vehicle's PV system. Furthermore, this vertical structure does not occupy surrounding space or affect other vehicles or pedestrians, thus increasing the vehicle's range.

[0043] Example 2

[0044] In a typical embodiment of the present invention, a method for operating a mirror-reflective multilayer photovoltaic vehicle roof assembly is provided, comprising:

[0045] When there is natural sunlight and the car is in motion, the upper and lower photovoltaic modules are closely attached, and the upper photovoltaic module directly uses natural sunlight to generate electricity to replenish the car's energy.

[0046] When the car is parked, the upper photovoltaic module is driven to move upward by a vertical motion mechanism. The mirror reflector of the mirror reflector is driven to flip outward by a rotation mechanism. The light at a special angle directly shines on the lower photovoltaic module, enabling it to work and generate electricity. Other natural light shines on the mirror reflector and is reflected by the mirror reflector to the mirror reflector film at the bottom of the upper photovoltaic module. At this time, the light source is reflected a second time by the mirror reflector film to the lower photovoltaic module, and the lower photovoltaic module works to generate electricity.

[0047] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A specular reflective laminated photovoltaic roof assembly, characterized by, The application relates to a photovoltaic module, which comprises an upper photovoltaic module and a lower photovoltaic module, the upper photovoltaic module is arranged on the upper portion of the lower photovoltaic module, and the upper photovoltaic module can move up and down; a mirror surface reflection component is arranged between the upper photovoltaic module and the lower photovoltaic module, the mirror surface reflection component can extend from between the two photovoltaic modules and can rotate; the mirror surface reflection component can reflect light to the lower photovoltaic module, and the upper photovoltaic module and the lower photovoltaic module can generate electricity. The mirror surface reflection component comprises a mirror surface reflection plate and a rotating mechanism, the rotating mechanism comprises a connecting rod, a sliding block, a screw rod and a micro motor, one end of the connecting rod is connected with the mirror surface reflection plate through a universal joint, the other end of the connecting rod is connected with the sliding block through a universal joint, the sliding block is arranged on a sliding rail, the sliding block is connected with the screw rod, and the screw rod is driven by the micro motor.

2. The specular reflective laminated photovoltaic roof assembly of claim 1, wherein, The upper photovoltaic module comprises high-transparency white glass, silicon crystal battery pieces, tempered glass and a mirror surface reflection film piece arranged in sequence from top to bottom.

3. The specular reflective laminated photovoltaic roof assembly of claim 1, wherein, The bottom of the upper photovoltaic module is supported on the roof of a car through a plurality of vertical movement mechanisms, and the vertical movement mechanisms adopt electric push rods.

4. The specular reflective laminated photovoltaic roof assembly of claim 1, wherein, The lower photovoltaic module comprises high-transparency white glass, silicon crystal battery pieces and tempered glass arranged in sequence from top to bottom, and the bottom of the lower photovoltaic module is fixed on the roof of the car.

5. The specular reflective laminated photovoltaic roof assembly of claim 1, wherein, The mirror surface reflection plate is installed on the upper surface of the lower photovoltaic module through a hinge, and the hinge is provided with two.

6. The specular reflective laminated photovoltaic roof assembly of claim 1, wherein, The mirror surface reflection plate is driven to overturn through two groups of rotating mechanisms, and two connecting rods of the two groups of rotating mechanisms are connected with the mirror surface reflection plate at the middle positions of two opposite sides of the mirror surface reflection plate.

7. The specular reflective laminated photovoltaic roof assembly of claim 1, wherein, The mirror surface reflection component is provided with at least two groups.

8. The specular reflective laminated photovoltaic roof assembly of claim 1, wherein, The mirror surface reflection component is installed on the upper surface of the lower photovoltaic module at a position close to the edge.

9. A method of operating a specular reflective laminated photovoltaic roof assembly as claimed in any one of claims 1 to 8, wherein, The application relates to a photovoltaic module, which comprises an upper photovoltaic module and a lower photovoltaic module, the upper photovoltaic module is arranged on the upper portion of the lower photovoltaic module, and the upper photovoltaic module can move up and down; a mirror surface reflection component is arranged between the upper photovoltaic module and the lower photovoltaic module, the mirror surface reflection component can extend from between the two photovoltaic modules and can rotate; the mirror surface reflection component can reflect light to the lower photovoltaic module, and the upper photovoltaic module and the lower photovoltaic module can generate electricity. When the car is in the process of driving and is illuminated by natural light, the upper photovoltaic module and the lower photovoltaic module are closely attached, and the upper photovoltaic module directly utilizes the natural light to work and generate electricity to supply energy to the car; When the car is parked, the upper photovoltaic module is driven to move upwards through the vertical movement mechanism, the mirror surface reflection plate of the mirror surface reflection component is driven to overturn outwards through the rotating mechanism, part of the natural light directly irradiates on the lower photovoltaic battery component to make the lower photovoltaic battery component work and generate electricity, and the other part of the natural light irradiates on the mirror surface reflection plate, the light is reflected to the mirror surface reflection film piece at the bottom of the upper photovoltaic battery component through the reflection of the mirror surface reflection plate, the light source is reflected to the lower photovoltaic battery component through the secondary reflection of the mirror surface reflection film piece, and the lower photovoltaic component works and generates electricity.

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