Sunshade device applied to motor home and motor home

Abstract

The utility model belongs to the technical field of perovskite batteries, and discloses a sunshade device applied to a motor home. Wherein the sun-shading device can be fixed on the motor home; the sunshade device comprises a hollow shaft and a sunshade assembly wound around the hollow shaft. The hollow shaft is connected with the driving device, and the driving device is used for controlling the hollow shaft to rotate so that the sunshade assembly wound around the hollow shaft can stretch, or the unfolded sunshade assembly can be wound back to the hollow shaft. The sun-shading assembly comprises sun-shading cloth and a flexible perovskite solar cell located on one side of the sun-shading cloth, and the flexible perovskite solar cell covers at least part of the sun-shading cloth. According to the invention, the light and thin flexible perovskite solar cell and the sunshade cloth are combined, and the power generation area of the solar cell is obviously increased on the premise that the influence on the weight and the size of the sunshade cloth is small after the combination, so that the power generation capacity is improved, the storage is convenient, and the occupation of the internal space of the motor home is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to perovskite battery technical field relates to a sunshade device and motor home for motor home. BACKGROUND

[0002] Motor home is also called home on wheels, which has the functions of both house and car. With the vigorous development of tourism, motor home travel has become a popular trend. During travel, motor homes often stop at places where power facilities are not perfect, such as river banks and grasslands. In this case, if the motor home is short of power, its use will be seriously affected. Therefore, it is necessary to equip the motor home with solar cells.

[0003] Some current motor homes usually only set solar panels in part of the roof area, so the installed solar panels have small area and small power, which cannot meet the power supply demand of the motor home. At the same time, most solar panels are heavy, which brings great bearing pressure to the top of the motor home. Therefore, how to expand the area of the motor home structure to set larger and lighter solar panels has become a problem to be solved. SUMMARY

[0004] The utility model aims at overcoming the above-mentioned prior art defects, and provides a sunshade device and motor home for motor home.

[0005] The utility model provides a sunshade device for motor home, the sunshade device is connected with motor home;The sunshade device includes: hollow shaft and sunshade component that is wound on the hollow shaft;

[0006] The hollow shaft is connected with the driving device, and the driving device is used for controlling the rotation of the hollow shaft, so that the sunshade component wound on the hollow shaft is stretched, or the unfolded sunshade component is wound on the hollow shaft;

[0007] The sunshade component includes sunshade cloth and flexible perovskite solar cell on one side of the sunshade cloth, and the flexible perovskite solar cell covers at least part of the sunshade cloth.

[0008] Further, the first end of the sunshade component is fixedly connected with the hollow shaft, and the second end of the sunshade component is detachably connected with the supporting structure.

[0009] Further, the edge position of the interior of the motor home body is provided with a containing cavity, the motor home body has a first opening in communication with the containing cavity;The sunshade device is located in the containing cavity, and the second end of the sunshade component can extend out of the first opening.

[0010] Further, the driving device comprises a first reset spring; the sunshade device comprises a first pull tab matched with the first reset spring, the first pull tab being connected with the second end of the sunshade assembly; the normal projection of the first pull tab on a reference plane does not overlap with the normal projection of the flexible perovskite solar cell on the reference plane.

[0011] The first pull tab is capable of receiving a pulling force to drive the sunshade assembly to stretch.

[0012] Further, the sunshade device further comprises a storage bin, the storage bin being fixedly arranged at an edge position outside the motor home body, or the storage bin being fixedly arranged on the top of the motor home.

[0013] The storage bin has a containing space; the hollow shaft and the sunshade assembly are located in the containing space; the storage bin has a second opening in communication with the containing space, and the second end of the sunshade assembly can extend out of the second opening.

[0014] Further, the driving device comprises a second reset spring; the sunshade device comprises a second pull tab matched with the second reset spring, the second pull tab being connected with the second end of the sunshade assembly; the normal projection of the second pull tab on a reference plane does not overlap with the normal projection of the flexible perovskite solar cell on the reference plane.

[0015] The second pull tab is capable of receiving a pulling force to drive the sunshade assembly to stretch.

[0016] Further, the sunshade device further comprises a fixed rod; the hollow shaft is sleeved on at least part of the fixed rod, and the hollow shaft and at least part of the fixed rod are coaxial;

[0017] The fixed rod comprises a first fixed rod, and a second fixed rod and a third fixed rod fixedly connected with both sides of the first fixed rod, the extension direction of the first fixed rod intersects with the extension direction of the second fixed rod, and intersects with the extension direction of the third fixed rod;

[0018] The hollow shaft is sleeved on the first fixed rod, and the second fixed rod and the third fixed rod are fixedly arranged at an edge position of the motor home body, or the second fixed rod and the third fixed rod are fixedly arranged on the top of the motor home.

[0019] Further, the flexible perovskite solar cell comprises a flexible substrate, a perovskite cell functional layer and a thin film packaging layer stacked in sequence.

[0020] Further, the sunshade device further comprises an adhesive layer between the flexible perovskite solar cell and the sunshade cloth.

[0021] In addition, the application further discloses a house car comprising the sunshade device.

[0022] The utility model provides a sunshade device for house car, relative to prior art, has the following beneficial effects:

[0023] First, according to the feature that the sunshade cloth (sunshade) will be equipped on the existing house car, the flexible perovskite solar cell and sunshade cloth are combined in the application, the area of solar cell is significantly increased, and the power generation capacity is improved.

[0024] Second, the perovskite solar cell in the application can be a flexible thin film structure, the flexible perovskite solar cell has the characteristics of being light and thin, so that the influence on the weight and volume of the sunshade cloth after being combined with the sunshade cloth is small.

[0025] Third, the flexible perovskite solar cell and sunshade cloth are combined, so that they can be rolled into the storage bin or containing cavity through the reel, which not only expands the power generation area of solar cell, but also is convenient to store.

[0026] Fourth, the sunshade device and solar power generation device are integrated, which can simplify the structure of house car, make the structure of house car more compact, and there is no need to re-plan the installation position of solar cell, so that the occupation of the internal space of house car can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings incorporated into the specification and forming a part thereof, together with the specification, serve to explain the principles of the utility model.

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor under the premise of not paying the creative labor.

[0029] Figure 1 It is the structure schematic view of embodiment 1 in the utility model;

[0030] Figure 2 It is the structure schematic view of embodiment 2 in the utility model;

[0031] Figure 3 It is the structure schematic view of embodiment 3 in the utility model;

[0032] Figure 4 It is the partial structure schematic view of sunshade device in the utility model;

[0033] Figure 5It is the sectional view of the sunshade assembly in the utility model;

[0034] Figure 6 It is the schematic view of the fixed rod in the utility model;

[0035] Figure 7 It is the layer structure schematic view of the normal type flexible perovskite solar cell in the utility model;

[0036] Figure 8 It is the layer structure schematic view of the reverse type flexible perovskite solar cell in the utility model.

[0037] Wherein: 1 is the vehicle body;2 is the hollow shaft;3 is the sunshade assembly;31 is the sunshade cloth;32 is the flexible perovskite solar cell;321 is the flexible substrate;322 is the perovskite cell functional layer;3220 is the first electrode layer;3221 is the electron transport layer;3222 is the perovskite compound light absorption layer;3223 is the hole transport layer;3224 is the second electrode layer;323 is the thin film encapsulation layer;5 is the fixed rod;5-1 is the first fixed rod;5-2 is the second fixed rod;5-3 is the third fixed rod;6 is the support structure;7 is the accommodating cavity;8 is the first pull tab;9 is the storage bin;11 is the second pull tab;12 is the adhesive layer. DETAILED DESCRIPTION

[0038] The example embodiments will be described in detail herein, and the embodiments described in the following example embodiments do not represent all the embodiments consistent with the utility model. Instead, they are only examples of devices consistent with some aspects of the utility model as detailed in the appended claims.

[0039] Example 1

[0040] As Figure 1 , Figure 4 , Figure 5 Indicated, a sunshade device applied to a motor home, the sunshade device is connected with the motor home. Wherein, the motor home can include: vehicle body 1, and the top of the motor home connected with the vehicle body 1. The sunshade device can include: hollow shaft 2 and sunshade assembly 3 wound on the hollow shaft 2;

[0041] In the present application, the hollow shaft 2 can be connected with the driving device, the driving device can control the rotation of the hollow shaft 2, so that the sunshade assembly 3 wound on the hollow shaft 2 is stretched, or the driving device can control the rotation of the hollow shaft 2, so that the sunshade assembly 3 is rolled back on the hollow shaft 2.

[0042] The driving device can be a reversible motor. The output shaft of the rotary motor is connected with the hollow shaft 2. The output shaft of the rotary motor drives the hollow shaft 2 to rotate. When the reversible motor drives the hollow shaft 2 to rotate around a first rotation direction, the sunshade cloth 31 with the flexible perovskite solar cell 32 on the surface is unfolded. When the reversible motor drives the hollow shaft 2 to rotate around a second rotation direction, the sunshade cloth 31 with the flexible perovskite solar cell 32 on the surface is rolled up on the hollow shaft 2. Here, the first rotation direction can be one of the clockwise direction and the counterclockwise direction, and the second rotation direction can be the other one of the clockwise direction and the counterclockwise direction. It should be noted that the motor home is provided with a control system. The start and stop of the reversible motor and the forward rotation and reverse rotation of the reversible motor can be realized through the control system.

[0043] Here, the sunshade assembly 3 can include a sunshade cloth 31 and a flexible perovskite solar cell 32 on one side of the sunshade cloth 31. The sunshade cloth 31 can be used to prevent light from entering the vehicle to prevent the temperature in the vehicle from rising under the irradiation of the sun. It should be noted that the size of the sunshade cloth 31 in the stretching direction can be adjusted as needed. Correspondingly, the coverage size of the flexible perovskite solar cell 32 on the sunshade cloth 31 can also be adjusted accordingly. In addition, the sunshade cloth 31 can be a cloth that can better block ultraviolet rays. For example, the raw material can be cotton, hemp, chemical fiber, etc. It has good absorption, conversion, reflection and scattering effects on ultraviolet rays (especially UV-A and UV-B) in the 180-400nm wave band.

[0044] The flexible perovskite solar cell 32 can cover at least part of the sunshade cloth 31. For example, the flexible perovskite solar cell 32 can cover the entire sunshade cloth 31. In this way, the overall coverage area of the flexible perovskite solar cell 32 can be large, so as to ensure that the power generation is high, so as to ensure that the flexible perovskite solar cell 32 can better provide power supply for the motor home.

[0045] It should be noted that the flexible perovskite solar cell 32 can be a thin film structure. The flexible perovskite solar cell 32 has the characteristics of being light and thin, so as to ensure that the influence on the weight and volume of the sunshade cloth after being combined with the sunshade cloth is small. For example, the thickness of the flexible perovskite solar cell 32 can be less than 0.1mm. In this way, the flexible perovskite solar cell 32 can be conveniently rolled up for storage, and at the same time, the flexible perovskite solar cell 32 can also be conveniently stretched out. Here, after the flexible perovskite solar cell 32 is stretched out, the area of the flexible perovskite solar cell 32 can be large, so as to increase the power generation, so that the flexible perovskite solar cell 32 can provide sufficient power supply for the motor home.

[0046] In one possible implementation manner, as shown in FIG. 6, the sunshade assembly 3 can include a sunshade cloth 31 and a flexible perovskite solar cell 32 on one side of the sunshade cloth 31. The sunshade cloth 31 can be used to prevent light from entering the vehicle to prevent the temperature in the vehicle from rising under the irradiation of the sun. It should be noted that the size of the sunshade cloth 31 in the stretching direction can be adjusted as needed. Correspondingly, the coverage size of the flexible perovskite solar cell 32 on the sunshade cloth 31 can also be adjusted accordingly. In addition, the sunshade cloth 31 can be a cloth that can better block ultraviolet rays. For example, the raw material can be cotton, hemp, chemical fiber, etc. It has good absorption, conversion, reflection and scattering effects on ultraviolet rays (especially UV-A and UV-B) in the 180-400nm wave band. Figure 5As shown, the flexible perovskite solar cell 32 and the sunshade cloth 31 can be provided with an adhesive layer 12, that is, the adhesive layer 12 can be adhered to the flexible perovskite solar cell 32 and the sunshade cloth 31 respectively, so that the flexible perovskite solar cell 32 and the sunshade cloth 31 can be adhered together through the adhesive layer 12, so that the connection between the flexible perovskite solar cell 32 and the sunshade cloth 31 is more stable.

[0047] In the embodiment of the present application, the first end of the sunshade assembly 3 can be fixedly connected with the hollow shaft 2, and the second end of the sunshade assembly 3 can be detachably connected with the support structure 6.

[0048] In the embodiment, preferably, the support structure 6 is a support rod, the bottom surface of the two corners of the second end of the sunshade assembly 3 is provided with a groove, the top end of the support rod is detachably connected in the groove, and the bottom end of the support rod is inserted into the soil to be fixed, or the bottom end of the support rod is provided with a base to be fixed. Preferably, the support rod is a telescopic structure, which is convenient for stretching the sunshade assembly 3 to various heights and angles, so as to better charge the motor home by the flexible perovskite solar cell 32 in the sunshade assembly 3.

[0049] Further, as shown in the drawings, Figure 1 As shown, the edge position inside the vehicle body 1 can be provided with a containing cavity 7, and the vehicle body 1 has a first opening communicating with the containing cavity 7. For example, the containing cavity 7 can be located at a position close to the top of the vehicle body 1. The sunshade device can be arranged in the containing cavity 7, and the second end of the sunshade assembly 3 can extend out of the first opening.

[0050] In the present application, the driving device can include a first reset spring, and the sunshade device includes a first pull tab 8 cooperating with the first reset spring, and the first pull tab 8 is connected with the second end of the sunshade assembly 3. The orthographic projection of the first pull tab 8 on the reference plane does not overlap with the orthographic projection of the flexible perovskite solar cell 32 on the reference plane. For example, the orthographic projection of the first pull tab 8 on the reference plane can not coincide with the orthographic projection of the flexible perovskite solar cell 32 on the reference plane. It should be noted that the reference plane refers to a plane parallel to the extension plane of the stretched sunshade assembly 3.

[0051] Here, the material of the first pull tab 8 can be plastic or corrosion-resistant metal, for example, the material of the first pull tab 8 can be 304 stainless steel or 316 stainless steel.

[0052] The first pull tab 8 can receive pulling force to extend the sunshade component 3. In this case, the user can pull the first pull tab 8 to allow the second end of the sunshade component 3 to extend out of the first opening. After the sunshade component 3 extends out of the first opening, the first pull tab 8 can be fixed to the support structure 6. Specifically, the support structure 6 is a telescopic support rod, the upper end of which can be connected to the first pull tab 8, and the lower end of which can be fixed to the ground.

[0053] Here, the sunshade assembly 3 can be automatically reset by the first reset spring. Specifically, when the first pull tab 8 is removed from the support structure 6 and placed in a non-fixed state, the sunshade assembly 3 can be automatically reset by the first reset spring.

[0054] Furthermore, the sunshade device also includes a fixing rod 5; the hollow shaft 2 is sleeved on at least a portion of the fixing rod 5, and the hollow shaft 2 and at least a portion of the fixing rod 5 are coaxial.

[0055] Furthermore, such as Figure 6 As shown, the fixing rod 5 includes a first fixing rod 5-1, and a second fixing rod 5-2 and a third fixing rod 5-3 fixedly connected to both sides of the first fixing rod 5-1. That is, one side of the first fixing rod 5-1 can be connected to the second fixing rod 5-2, and the other side of the first fixing rod 5-1 can be connected to the third fixing rod 5-3. In this way, the second fixing rod 5-2 and the third fixing rod 5-3 can be connected together through the first fixing rod 5-1.

[0056] The first fixing rod 5-1 extends in a direction that intersects with the extension direction of the second fixing rod 5-2 and the extension direction of the third fixing rod 5-3. Alternatively, the extension direction of the first fixing rod 5-1 may be perpendicular to the extension direction of the second fixing rod 5-2 and the extension direction of the third fixing rod 5-3.

[0057] Here, the hollow shaft 2 is sleeved on the first fixing rod 5-1, and the second fixing rod 5-2 and the third fixing rod 5-3 are fixedly installed at the edge of the RV body, or the second fixing rod 5-2 and the third fixing rod 5-3 are fixedly installed on the top of the RV. In this way, the fixing rods 5 can ensure a more stable connection between the sunshade device and the RV.

[0058] Furthermore, the flexible perovskite solar cell 32 may include: a flexible substrate 321, a perovskite cell functional layer 322, and a thin film encapsulation layer 323 stacked sequentially.

[0059] Furthermore, such as Figure 7As shown, the perovskite battery functional layer 322 comprises a first electrode layer 3220, an electron transport layer 3221, a perovskite compound light-absorbing layer 3222, a hole transport layer 3223 and a second electrode layer 3224 stacked in sequence; the second electrode layer 3224 is a transparent electrode. The perovskite solar cell of this structure is a positive perovskite solar cell. In an example, the thickness of the electron transport layer 3221 is 20-50 nm, the thickness of the perovskite compound light-absorbing layer 3222 is 200-800 nm, the thickness of the hole transport layer 3223 is 50-200 nm, and the thickness of the first electrode layer 3220 and the second electrode layer 3224 is 80-150 nm.

[0060] The perovskite compound light-absorbing layer 3222 comprises, but is not limited to, at least one of methylamine lead iodide (CH3NH3PbI3), methylamine lead bromide (CH3NH3PbBr3), cesium chloride lead (CsPbCl3), lead bromide (CsPbBr3), lead chloride bromide (CsPbBrxCl 3-x ), lead sulfide (PbS);

[0061] The electron transport layer 3221 comprises, but is not limited to, at least one of TiO2, SnO2, methyl fullerene (PCBM);

[0062] The hole transport layer 3223 comprises, but is not limited to, at least one of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA), NiOx, Spiro-OMeTAD.

[0063] In addition, the application also discloses a motor home, which can comprise the sunshade device. The motor home can be any vehicle such as a self-propelled A-type motor home, a self-propelled B-type motor home, a self-propelled C-type motor home, a towed A-type motor home, a towed B-type motor home, a towed C-type motor home, a towed D-type motor home, a mobile villa A-type motor home, an off-road motor home, a racing motor home, a campsite motor home, etc.

[0064] Embodiment 2

[0065] As Figure 2 shown, based on the embodiment 1, the difference between the embodiment 1 and the embodiment 2 is that the motor home further comprises a storage bin 9, which is fixedly arranged at an edge position outside the vehicle body 1. In an example, the storage bin 9 can be fixedly arranged at a position closer to the top of the side of the vehicle body of the motor home.

[0066] The storage bin 9 has a containing space; the sunshade device and the driving device are arranged in the containing space, the storage bin 9 has a second opening in communication with the containing space, and the second end of the sunshade assembly 3 can extend out of the second opening.

[0067] In the present application, the driving device can include a second reset spring; the sunshade device includes a second pull tab 11 cooperating with the first reset spring, and the second pull tab 11 can be connected with the second end of the sunshade assembly 3. Wherein, the orthogonal projection of the second pull tab 11 on the reference plane does not overlap with the orthogonal projection of the flexible perovskite solar cell 32 on the reference plane. For example, the orthogonal projection of the second pull tab 11 on the reference plane can not coincide with the orthogonal projection of the flexible perovskite solar cell 32 on the reference plane.

[0068] In this case, the user can pull the second pull tab 11 to make the second end of the sunshade assembly 3 extend out of the second opening. After the sunshade assembly 3 extends out of the second opening, the second pull tab 11 can be fixed on the support structure 6.

[0069] In the present embodiment: the material of the second pull tab 11 can be plastic or corrosion-resistant metal, for example, the material of the second pull tab 11 can be 304 stainless steel or 316 stainless steel, and the second pull tab 11 can also be provided with an anti-slip handle or anti-slip particles to prevent slipping when pulling the second pull tab 11.

[0070] Wherein, the second pull tab 11 can receive a pulling force to drive the sunshade assembly 3 to extend. In this case, the user can pull the second pull tab 11 to make the second end of the sunshade assembly 3 extend out of the second opening, and after the sunshade assembly 3 extends out of the second opening, the second pull tab 11 can be fixed on the support structure 6. Specifically, the support structure 6 is a telescopic support rod, the upper end of the telescopic support rod can be connected with the second pull tab 11, and the lower end of the telescopic support rod can be fixed on the ground.

[0071] Here, the second reset spring can make the sunshade assembly 3 automatically reset. Specifically, when the second pull tab 11 is removed from the support structure 6 and is in a state of not being fixed, the second reset spring can make the sunshade assembly 3 automatically reset.

[0072] It should be noted that the sunshade assembly 3 in the embodiment can be stretched or rewound onto the hollow shaft 2 by the driving device. The driving device can be a forward and reverse motor, or the driving device can include a reset spring. When the driving device is a forward and reverse motor, the forward and reverse motor can make the sunshade assembly 3 stretch through the forward rotation of the motor output shaft, or make the sunshade assembly 3 rewind through the reverse rotation of the motor output shaft. When the driving device has a reset spring, the sunshade cloth 31 can be rewound by the reset spring.

[0073] It also needs to be explained that the storage bin 9 can accommodate the sunshade assembly 3 and the hollow shaft 2, on the other hand, the storage bin 9 can protect the sunshade cloth 31 with the surface of the flexible perovskite solar cell 32, so as to avoid damage to it in bad weather such as rain and snow.

[0074] Embodiment 3

[0075] As Figure 3 shown, based on embodiment 1, the difference between this embodiment and embodiment 2 is that the storage bin 9 is fixedly arranged on the top of the motor home.

[0076] In this embodiment, the storage bin 9 is fixedly arranged on the top of the motor home through the fixing rod 5, and preferably, the storage bin 9 is arranged on the top of the motor home and close to the position of the side wall of the motor home.

[0077] Embodiment 4

[0078] As Figure 8 shown, based on embodiment 1, the difference between this embodiment and embodiment 1 is that the perovskite battery functional layer 322 comprises a first electrode layer 3220, a hole transport layer 3223, a perovskite compound light absorption layer 3222, an electron transport layer 3221 and a second electrode layer 3224 stacked in sequence; the second electrode layer 3224 is a transparent electrode, and the perovskite solar cell with the structure is a reverse type perovskite solar cell.

[0079] The above is only a specific embodiment of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application.

[0080] It should be understood that the present application is not limited to the above described and that various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A sunshade device applied to a recreational vehicle, characterized by, The sunshade device is arranged on one side of the recreational vehicle; the sunshade device comprises a hollow shaft (2) and a sunshade assembly (3) wound on the hollow shaft (2); The hollow shaft (2) is connected with a driving device, and the driving device is used for controlling the rotation of the hollow shaft (2) so as to make the sunshade assembly (3) wound on the hollow shaft (2) stretch, or make the unfolded sunshade assembly (3) wind back on the hollow shaft (2); The sunshade assembly (3) comprises a sunshade cloth (31) and a flexible perovskite solar cell (32) located on one side of the sunshade cloth (31), and the flexible perovskite solar cell (32) covers at least part of the sunshade cloth (31); The sunshade device further comprises a fixed rod (5); the hollow shaft (2) is sleeved on at least part of the fixed rod (5), and at least part of the hollow shaft (2) and the fixed rod (5) are coaxial; The fixed rod (5) comprises a first fixed rod (5-1), and a second fixed rod (5-2) and a third fixed rod (5-3) fixedly connected with both sides of the first fixed rod (5-1); the extension direction of the first fixed rod (5-1) intersects with the extension direction of the second fixed rod (5-2) and the extension direction of the third fixed rod (5-3); The hollow shaft (2) is sleeved on the first fixed rod (5-1), and the second fixed rod (5-2) and the third fixed rod (5-3) are fixedly arranged at the edge position of the recreational vehicle body, or the second fixed rod (5-2) and the third fixed rod (5-3) are fixedly arranged on the top of the recreational vehicle.

2. A shading device according to claim 1, characterised in that The first end of the sunshade assembly (3) is fixedly connected with the hollow shaft (2), and the second end of the sunshade assembly (3) is detachably connected with a support structure (6).

3. A shading device according to claim 2, wherein, An accommodating cavity (7) is arranged at the edge position inside the recreational vehicle body, and the recreational vehicle body has a first opening communicating with the accommodating cavity (7); the sunshade device is located in the accommodating cavity (7), and the second end of the sunshade assembly (3) can extend out of the first opening.

4. A shading device according to claim 3, characterised in that The driving device comprises a first reset spring; the sunshade device comprises a first pull tab (8) matched with the first reset spring, the first pull tab (8) is connected with the second end of the sunshade assembly (3); the orthographic projection of the first pull tab (8) on a reference plane does not overlap with the orthographic projection of the flexible perovskite solar cell (32) on the reference plane; The first pull tab (8) can receive a pulling force to drive the sunshade assembly (3) to stretch.

5. A shading device according to claim 2, wherein The sunshade device further comprises a storage bin (9), which is fixedly arranged at the edge position outside the recreational vehicle body, or the storage bin (9) is fixedly arranged on the top of the recreational vehicle; The storage bin (9) has a containing space; the hollow shaft (2) and the sunshade assembly (3) are located in the containing space; the storage bin (9) has a second opening communicating with the containing space, and the second end of the sunshade assembly (3) can extend out of the second opening.

6. A shading device according to claim 5, wherein The driving device comprises a second reset spring; the sunshade device comprises a second pull tab (11) matched with the second reset spring, the second pull tab (11) being connected with a second end of the sunshade assembly (3); a normal projection of the second pull tab (11) on a reference plane does not overlap with a normal projection of the flexible perovskite solar cell (32) on the reference plane; The second pull tab (11) can receive a pulling force to drive the sunshade assembly (3) to stretch.

7. A shading device according to claim 1, characterised in that The flexible perovskite solar cell (32) comprises a flexible substrate (321), a perovskite cell functional layer (322) and a thin film packaging layer (323) stacked in sequence.

8. A shading device according to claim 1, characterised in that The sunshade device further comprises an adhesive layer (12) located between the flexible perovskite solar cell (32) and the sunshade cloth (31).

9. A recreational vehicle characterized by, The sunshade device comprises any one of claims 1-8.

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