Vehicle-mounted photovoltaic module

Abstract

The utility model discloses a vehicle-mounted photovoltaic assembly, and the assembly comprises a mounting rack which is used for being disposed at the top of an automobile; the photovoltaic module is arranged on the mounting frame, and the light receiving surface of the photovoltaic module faces upwards; the driving assembly is arranged on the mounting frame, the shielding piece and the photovoltaic module are in the same width direction and are flexible, the driving assembly drives the shielding piece to move between the shielding station and the power generation station, the lower portion of the shielding station and the shielding layer cover the light receiving face, and the lower portion of the power generation station, the shielding piece and the space over the light receiving face are separated. According to the vehicle-mounted photovoltaic module, the driving module drives the shielding piece to move between the power generation station and the shielding station, when external illumination is weak, the shielding piece moves to the shielding station to shield the photovoltaic module, dust accumulation on a light receiving surface is reduced, it is guaranteed that when the shielding piece moves to the power generation station on a sunny day, the photovoltaic module has high power generation efficiency, and the power generation efficiency of the vehicle-mounted photovoltaic module is improved. And the cleaning period of the photovoltaic module is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, and in particular to a vehicle-mounted photovoltaic module. Background Technology

[0002] Vehicle-mounted photovoltaic modules are a new type of green energy device that uses solar energy to generate electricity. They are usually installed on the top or surface of vehicles (such as motorhomes, cars, yachts, etc.) as an auxiliary charging system. They convert sunlight into electrical energy to power the vehicle's electrical appliances, and have the advantages of energy saving, environmental protection, reduced energy consumption and increased vehicle range.

[0003] Existing vehicle-mounted photovoltaic (PV) modules are mainly fixed directly to the roof of the car. Although these modules have a simple structure, they are directly exposed to the outside. When the external light is weak, such as in cloudy or rainy weather or at night, the PV modules not only fail to generate electricity for the battery, but also easily accumulate dust on their surface. This leads to a significant reduction in photoelectric conversion efficiency on sunny days. In order to ensure their power generation efficiency, they need to be cleaned frequently.

[0004] Therefore, it is necessary to improve the existing vehicle-mounted photovoltaic modules. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a vehicle-mounted photovoltaic module that reduces surface dust accumulation to ensure photovoltaic power generation efficiency and extend the cleaning cycle.

[0006] To achieve the above-mentioned technical effects, the technical solution of this utility model is: a vehicle-mounted photovoltaic module, comprising:

[0007] Mounting bracket, the mounting bracket being used for mounting on the roof of a vehicle;

[0008] A photovoltaic module, wherein the photovoltaic module is mounted on the mounting frame with its light-receiving surface facing upward;

[0009] The photovoltaic module includes a driving component and a shielding component. The driving component is mounted on the mounting frame. The shielding component is flexible and has the same width as the photovoltaic module. The driving component drives the shielding component to move between a shielding position and a power generation position. In the shielding position, the shielding layer covers the light-receiving surface. In the power generation position, the shielding component is spaced apart from the space directly above the light-receiving surface.

[0010] Preferably, in order to make the device structure more compact and further reduce dust accumulation on the light-receiving surface of the photovoltaic module, the shading component is attached to the light-receiving surface in the shading position.

[0011] Preferably, in order to drive the shading component to move, the driving assembly includes a transmission belt disposed on both sides of the photovoltaic module and fixedly connected to the shading component, two transmission wheels connected by the transmission belt and rotating around their own axis on the mounting frame, and a driving unit drivenly connected to one of the transmission wheels, wherein the photovoltaic module is disposed between the transmission belts.

[0012] Preferably, in order to achieve a relatively fixed connection between the photovoltaic module and the mounting frame, while ensuring airtightness and reducing dust accumulation on the top of the car, the mounting frame includes mounting shells disposed on both sides of the photovoltaic module. The mounting shells correspond one-to-one with the conveyor belt and are open on one side facing the photovoltaic module. The conveyor belt rotates circumferentially within the mounting shells. The mounting frame also includes a support frame disposed between the mounting shells, and the photovoltaic module is disposed on the support frame.

[0013] Preferably, in order to reduce the weight of the photovoltaic module and reduce the vehicle load, the photovoltaic module is a flexible module.

[0014] Preferably, to facilitate cleaning of the car roof, the mounting bracket further includes a fixing seat and a locking element. The fixing seat is used to fix the mounting shell to the car roof, the mounting shell rotates on the fixing seat with the rotation axis parallel to the width direction of the photovoltaic module, and the locking element is used to lock the mounting shell onto the fixing seat.

[0015] Preferably, in order to lock the position of the mounting housing, the locking element includes a locking pin, and the mounting housing and the fixing base are respectively provided with a first locking hole and a second locking hole, which are engaged by the locking pin.

[0016] Preferably, in order to ensure the stable movement of the shielding component, the shielding component is a closed loop, and the two ends of the inner circumferential wall of the shielding component are fixedly connected to the outer circumferential edge of the conveyor belt. The side wall of the shielding component is provided with a light-illuminating through hole. In the power generation position, the light-illuminating through hole faces the light-receiving surface and the horizontal projection of the light-receiving surface is located inside the horizontal projection of the light-illuminating through hole.

[0017] Preferably, in order to ensure the airtightness of the device under the power generation position and reduce dust accumulation between the mounting shells, the length and width of the light-illuminating through hole are consistent with the length and width of the photovoltaic module, respectively.

[0018] Preferably, in order to detect the intensity of external sunlight, the mounting frame is equipped with a detector for detecting sunlight intensity, which is an illuminance sensor or a sunlight sensor.

[0019] In summary, compared with the prior art, the vehicle-mounted photovoltaic module of this utility model drives the shading component to move between the power generation position and the shading position. When the external light is weak, the shading component moves to the shading position to block the photovoltaic module, reducing dust accumulation on the light-receiving surface. This ensures that the photovoltaic module has high power generation efficiency when the shading component moves to the power generation position on sunny days, and extends the cleaning cycle of the photovoltaic module. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment;

[0021] Figure 2 yes Figure 1 An explosion diagram;

[0022] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0023] Figure 4 yes Figure 1 Partial structural diagram;

[0024] Figure 5 yes Figure 4 An explosion diagram;

[0025] Figure 6 This is a structural schematic diagram of another usage state of the first embodiment;

[0026] Figure 7 yes Figure 6 An explosion diagram;

[0027] Figure 8 This is a schematic diagram of the structure of the second embodiment;

[0028] Figure 9 yes Figure 8 An explosion diagram;

[0029] Figure 10 yes Figure 9 Enlarged view of part A;

[0030] In the diagram: 1. Mounting bracket; 11. Mounting housing; 111. First locking hole; 112. Rotary joint; 12. Support frame; 121. Support bar; 13. Fixed base; 131. Second locking hole; 14. Locking element; 141. Screw part; 142. Insert rod part; 2. Photovoltaic module; 3. Drive assembly; 31. Conveyor belt; 32. Drive wheel; 321. Notch; 322. Bearing; 33. Drive unit; 331. Connecting frame; 34. Concentric shaft; 341. Insertion hole; 4. Shielding element; 41. Light-emitting through hole; 5. Detector. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0032] First Embodiment

[0033] like Figures 1-7 As shown, the vehicle-mounted photovoltaic module of the first embodiment of this utility model includes:

[0034] Mounting bracket 1, which is used for mounting on the top of a vehicle;

[0035] Photovoltaic module 2, which is mounted on mounting frame 1 with the light-receiving surface facing upward;

[0036] The driving component 3 and the shading component 4 are mounted on the mounting frame 1. The shading component 4 is flexible and has the same width as the photovoltaic module 2. The driving component 3 drives the shading component 4 to move between the shading position and the power generation position. Under the shading position, the shading layer covers the light-receiving surface. Under the power generation position, the shading component 4 is separated from the space directly above the light-receiving surface.

[0037] In this device, the mounting bracket 1 is set on the top of the car. The mounting bracket 1 facilitates the installation of the photovoltaic module 2. The light-receiving surface of the photovoltaic module 2 faces upward, so as to receive sunlight for photovoltaic power generation. In actual use, when the external light is sufficient to enable the photovoltaic module 2 to supply power to the car's internal system, the drive component 3 drives the shading component 4 to move to the power generation position. In the power generation position, the shading component 4 is separated from the space directly above the light-receiving surface to avoid blocking sunlight, thereby facilitating sunlight to shine on the light-receiving surface of the photovoltaic module 2 and facilitating photovoltaic power generation by the photovoltaic module 2.

[0038] When external sunlight is weak and insufficient for photovoltaic module 2 to generate electricity, such as during cloudy or rainy weather, at night, or after a car has driven into a basement, the drive module 3 moves the shading component 4 to the shading position. In the shading position, the shading component 4 can cover the light-receiving surface of photovoltaic module 2, thereby reducing dust accumulation on the light-receiving surface of photovoltaic module 2 and ensuring its cleanliness. In this way, when the shading component 4 moves to the power generation position, photovoltaic module 2 has a higher photovoltaic power generation efficiency. Furthermore, by reducing dust accumulation on the surface of photovoltaic module 2, the cleaning cycle of photovoltaic module 2 is extended, thereby reducing the burden on people.

[0039] A further improvement is that, in the shading position, the shading component 4 is in contact with the light-receiving surface. This design helps reduce the overall height of the device, making the structure more compact. Furthermore, because the shading component 4 covers and is in contact with the light-receiving surface in the shading position, the possibility of dust accumulation on the light-receiving surface of the photovoltaic module 2 is further reduced, which is beneficial for maintaining the cleanliness of the light-receiving surface of the photovoltaic module 2 over the long term and ensuring its consistently high photovoltaic power generation efficiency.

[0040] A further improvement is that the drive assembly 3 includes a transmission belt 31 disposed on both sides of the photovoltaic module 2 and fixedly connected to the shading member 4, two transmission wheels 32 connected to the transmission belt 31 and rotating around their own axis on the mounting frame 1, and a drive unit 33 drivenly connected to one of the transmission wheels 32. The photovoltaic module 2 is disposed between the transmission belts 31. The mounting frame 1 includes mounting shells 11 disposed on both sides of the photovoltaic module 2. The mounting shells 11 correspond one-to-one with the transmission belts 31 and are open on one side facing the photovoltaic module 2. The transmission belts 31 rotate around their own circumference within the mounting shells 11. The mounting frame 1 also includes a support frame 12 disposed between the mounting shells 11. The photovoltaic module 2 is disposed on the support frame 12.

[0041] Specifically, the mounting frame 1 includes a support frame 12 and mounting shells 11 disposed on both sides of the support frame 12 and facing each other. The opposite side of the mounting shells 11 is open to accommodate the drive wheel 32 and the transmission belt 31, preventing the transmission belt 31 from aging and affecting the transmission performance. The photovoltaic module 2 has a rectangular plate structure. The width direction of the photovoltaic module 2 is consistent with the facing direction of the two mounting shells 11, and the length direction is consistent with the length direction of the two mounting shells 11. The support frame 12 includes a number of support bars 121 arranged side by side at intervals along the length direction of the mounting shells 11. The two ends of the support bars 121 are fixedly connected to the inner walls of the two mounting shells 11. The mounting shells 11 are used to fix to the top of the car, and the photovoltaic module 2 is fixed above the support bars 121.

[0042] The transmission belt 31 is horizontally oval-shaped. At both ends of the inner side of the transmission belt 31 are drive wheels 32, one of which is a driving wheel and the other a driven wheel. The drive unit 33 is a dual-axis output motor located between the two mounting housings 11 and below the support frame 12. Its housing is fixedly connected to one of the support bars 121 via a connecting frame 331. The two output shafts are coaxial and fixedly connected to the driving wheels in the two mounting housings 11. The driven wheels in the two mounting housings 11 are fixedly connected to each other via a concentric shaft 34. A cylindrical recess 321 is provided on the side of the transmission wheel 32 facing away from the photovoltaic module 2. A bearing 322, coaxial with the transmission wheel 32, is provided within the recess 321. The outer ring of the bearing 322 is fixedly connected to the inner wall of the recess 321, and the inner ring is fixedly connected to the inner wall of the mounting housing 11, ensuring that the transmission wheel 32 can rotate around its own axis. More preferably, the transmission wheel 32 and the transmission belt 31 are a cooperating synchronous wheel and synchronous belt.

[0043] With the above structure, the drive unit 33 operates, driving the transmission wheel 32, which acts as the driving wheel, to rotate. Under the cooperation of the transmission wheel 32, which acts as the driven wheel, the conveyor belt 31 can rotate circumferentially, adjusting the position of the blocking member 4. Specifically, when the connection between the blocking member 4 and the conveyor belt 31 is mainly concentrated on the upper layer of the conveyor belt 31, such as... Figure 6 and Figure 7 As shown, at this time, the shading component 4 is located at the shading position, covering the light-receiving surface, which facilitates dust accumulation in the photovoltaic module 2; conversely, when the connection between the shading component 4 and the conveyor belt 31 is mainly concentrated in the lower layer of the conveyor belt 31, such as Figure 1 As shown, at this time, the shading component 4 is located at the shading position, and the shading component 4 is separated from the space above the light-receiving surface, so as to facilitate the light-receiving surface of the photovoltaic module 2 to receive sunlight for photovoltaic power generation.

[0044] A further improvement is that the shielding member 4 is a closed loop, and the two ends of the inner circumferential wall of the shielding member 4 are fixedly connected to the outer circumferential edge of the conveyor belt 31. A light-illuminating through hole 41 is provided on the side wall of the shielding member 4. In the power generation position, the light-illuminating through hole 41 faces the light-receiving surface and the horizontal projection of the light-receiving surface is located inside the horizontal projection of the light-illuminating through hole 41.

[0045] With the above structure, the position of the light-illuminating aperture 41 will change accordingly depending on the position of the shading member 4. Specifically, in the light-emitting position, the light-illuminating aperture 41 is located directly above the photovoltaic module 2, facilitating sunlight to shine onto the light-receiving surface of the photovoltaic module 2. In the shading position, the light-illuminating aperture 41 is located directly below the photovoltaic module 2. The shading member 4 is fixedly connected to the circumferential outer edge of the conveyor belt 31, increasing the contact area between the shading member 4 and the conveyor belt 31. This ensures that after the conveyor belt 31 rotates circumferentially under the influence of the driving unit 33, the shading member 4 can adjust its position accordingly. It should be noted that the flexible shading member 4 can be selected in various ways, such as a shading film or a shading cloth.

[0046] A further improvement is that the length and width of the light-illuminating aperture 41 are consistent with the length and width of the photovoltaic module 2, respectively. With this improvement, when the shading member 4 moves to the power generation position, the photovoltaic module 2 is positioned directly below and adjacent to the inner side of the light-illuminating aperture 41. This reduces the gap between the photovoltaic module 2 and the light-illuminating aperture 41, thereby decreasing dust accumulation between the two mounting shells 11 on the top of the vehicle.

[0047] A further improvement is that the mounting frame 1 is equipped with a detector 5 for detecting the intensity of sunlight. The detector 5 is an illuminance sensor or a sunlight sensor.

[0048] Specifically, detector 5 is positioned above one of the mounting housings 11. By detecting the intensity of external sunlight, when the sunlight intensity is sufficient for the photovoltaic module 2 to generate electricity, the drive component 3 automatically adjusts the shading component 4 to the power generation position, enabling the photovoltaic module 2 to generate electricity. Conversely, when the sunlight is weak, the drive component 3 automatically adjusts the shading component 4 to the shading position, reducing dust accumulation on the light-receiving surface of the photovoltaic module 2, thus ensuring subsequent power generation efficiency and extending the cleaning cycle. Detector 5 can be either a illuminance sensor or a solar sensor. Illuminance sensors measure and record the intensity of sunlight, typically converting sunlight into an electrical signal output, with the output signal being proportional to the illuminance. Solar sensors, similarly based on the principle of solar irradiance spectrum, possess high sensitivity and reliability. They can sense the presence and intensity of sunlight and convert this information into electrical signals or other forms of signal output for use by the photovoltaic system.

[0049] Second Embodiment

[0050] like Figures 8-10 As shown, the vehicle-mounted photovoltaic module of the second embodiment of this utility model is based on the first embodiment, but differs in that the mounting bracket 1 further includes a fixing seat 13 and a locking member 14. The fixing seat 13 is used to fix it to the top of the car, and the mounting shell 11 rotates on the fixing seat 13 with the rotation axis parallel to the width direction of the photovoltaic module 2. The locking member 14 is used to lock the mounting shell 11 onto the fixing seat 13. The locking member 14 includes a locking pin, and the mounting shell 11 and the fixing seat 13 are respectively provided with a first locking hole 111 and a second locking hole 131. The first locking hole 111 and the second locking hole 131 are engaged by the locking pin.

[0051] Compared to the first embodiment, in this embodiment, the mounting bracket 13 is fixed to the car roof, and the mounting shell 11 rotates on the mounting bracket 13 and is locked in position by the locking member 14. Thus, after long-term use, the locking member 14 can be released to lock the mounting shell 11, making it easy for the mounting shell 11 to rotate upward, so that the car roof is exposed and easy to clean.

[0052] Specifically, two sets of fixing seats 13 are provided, one for each of the mounting shell 11 on the side opposite to the open side. Each set of fixing seats 13 includes a first fixing seat 13 and a second fixing seat 13. One end of the mounting shell 11 has a first locking hole 111 coaxial with the concentric shaft 34, and the other end is fixed with a rotating joint 112, which rotates on the first fixing seat 13. A second locking hole 131 is provided on the second fixing seat 13. Both the first and second locking holes 111 are through holes extending parallel to the width direction of the photovoltaic module 2. With this structure, the mounting shell 11 can be locked onto the second fixing seat 13 by passing a locking pin through the second locking hole 131 and the first locking hole 111 in sequence.

[0053] Furthermore, the transmission wheel 32 is annular, and both ends of the concentric shaft 34 are provided with insertion holes 341 coaxial with it. The locking pin includes a screw portion 141 and an insertion rod portion 142 connected coaxially. The insertion rod portion 142 is adapted to the insertion hole 341, and the screw portion 141 is threadedly connected to the second locking hole 131. With the above structure, the threaded connection of the screw portion 141 and the second locking hole 131 ensures the connection strength between the locking pin and the fixed seat 13, preventing the locking pin from disengaging from the fixed seat 13. At the same time, the insertion rod portion 142 and the insertion hole 341 are engaged to ensure the locking strength and further ensure the stable rotation of the concentric shaft 34 around its own axis.

[0054] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A vehicle-mounted photovoltaic module, characterized in that, include: Mounting bracket (1), said mounting bracket (1) is used for mounting on the top of a vehicle; A photovoltaic module (2) is mounted on the mounting frame (1) with the light-receiving surface facing upwards; The driving component (3) and the shielding component (4) are provided on the mounting frame (1). The shielding component (4) is in the same width direction as the photovoltaic module (2) and is flexible. The driving component (3) drives the shielding component (4) to move between the shielding position and the power generation position. Under the shielding position, the shielding layer covers the light-receiving surface. Under the power generation position, the shielding component (4) is separated from the space directly above the light-receiving surface.

2. The vehicle-mounted photovoltaic module according to claim 1, characterized in that: In the shielding position, the shielding component (4) is in contact with the light-receiving surface.

3. The vehicle-mounted photovoltaic module according to claim 1, characterized in that: The drive assembly (3) includes a transmission belt (31) disposed on both sides of the photovoltaic module (2) and fixedly connected to the shielding member (4), two drive wheels (32) connected by the transmission belt (31) and rotating around their own axis on the mounting frame (1), and a drive unit (33) driven by one of the drive wheels (32). The photovoltaic module (2) is disposed between the transmission belts (31).

4. The vehicle-mounted photovoltaic module according to claim 3, characterized in that: The mounting frame (1) includes mounting shells (11) facing each other on both sides of the photovoltaic module (2). The mounting shells (11) correspond one-to-one with the conveyor belts (31) and are open on one side facing the photovoltaic module (2). The conveyor belts (31) rotate around themselves within the mounting shells (11). The mounting frame (1) also includes a support frame (12) disposed between the mounting shells (11). The photovoltaic module (2) is disposed on the support frame (12).

5. The vehicle-mounted photovoltaic module according to claim 4, characterized in that: The photovoltaic module (2) is a flexible module.

6. The vehicle-mounted photovoltaic module according to claim 4, characterized in that: The mounting bracket (1) further includes a fixing seat (13) and a locking member (14). The fixing seat (13) is used to fix the mounting to the top of the vehicle. The mounting shell (11) rotates on the fixing seat (13) with the rotation axis parallel to the width direction of the photovoltaic module (2). The locking member (14) is used to lock the mounting shell (11) on the fixing seat (13).

7. The vehicle-mounted photovoltaic module according to claim 6, characterized in that: The locking component (14) includes a locking pin. The mounting shell (11) and the fixing base (13) are respectively provided with a first locking hole (111) and a second locking hole (131). The first locking hole (111) and the second locking hole (131) are engaged by the locking pin.

8. The vehicle-mounted photovoltaic module according to claim 1, characterized in that: The shielding member (4) is a closed loop. The two ends of the inner circumferential wall of the shielding member (4) are fixedly connected to the outer circumferential edge of the conveyor belt (31). A light-illuminating through hole (41) is provided on the side wall of the shielding member (4). Under the power generation position, the light-illuminating through hole (41) faces the light-receiving surface and the horizontal projection of the light-receiving surface is located inside the horizontal projection of the light-illuminating through hole (41).

9. The vehicle-mounted photovoltaic module according to claim 8, characterized in that: The length and width of the light-emitting through hole (41) are the same as the length and width of the photovoltaic module (2).

10. The vehicle-mounted photovoltaic module according to any one of claims 1-9, characterized in that: The mounting bracket (1) is equipped with a detector (5) for detecting the intensity of sunlight. The detector (5) is a light intensity sensor or a sunlight sensor.

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