Photovoltaic power generation car cover

Abstract

The utility model discloses a photovoltaic power generation car cover, which relates to the technical field of solar photovoltaic devices and comprises a mounting adhesive layer, a first transparent base material layer, a transparent reflecting layer, a second transparent base material layer, a photovoltaic power generation layer and a transparent protective layer which are stacked. The photovoltaic power generation layer comprises two transparent conductive layers and a transparent absorption layer located between the two transparent conductive layers. The utility model aims to provide a transparent and heat-insulating solar car cover.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaic devices, in particular to a photovoltaic power generation car cover. Background Art

[0002] Photovoltaic thin film is a solar energy conversion technology based on thin film materials. With the continuous development of scientific research and engineering practice, photovoltaic thin film technology plays an important role in the growing solar energy market.

[0003] In the automotive sector, photovoltaic thin-film technology can be used to achieve onboard solar power generation and enhance vehicle energy efficiency. However, photovoltaic films are typically attached to the vehicle body or windows. However, most current photovoltaic films are not light-transmitting and therefore cover the vehicle paint, making them less suitable for use. Utility Model Content

[0004] The main purpose of the utility model is to provide a photovoltaic power generation car cover, aiming to provide a transparent and heat-insulating solar car cover.

[0005] To achieve the above-mentioned object, the present invention provides a photovoltaic power generation car cover, wherein the photovoltaic power generation car cover comprises a stacked mounting adhesive layer, a first transparent substrate layer, a transparent reflective layer, a second transparent substrate layer, a photovoltaic power generation layer, and a transparent protective layer;

[0006] The photovoltaic power generation layer includes two transparent conductive layers and a transparent absorption layer located between the two transparent conductive layers.

[0007] In one embodiment, the transparent reflective layer includes at least two titanium dioxide reflective layers and a silver reflective layer located between the two titanium dioxide reflective layers.

[0008] In one embodiment, an indium tin oxide layer is further disposed between the two titanium dioxide reflective layers, and the indium tin oxide layer is disposed on a side of the silver reflective layer close to the first transparent substrate layer.

[0009] In one embodiment, a nickel layer is further disposed between the two titanium dioxide reflective layers, and the nickel layer is located on a side of the silver reflective layer away from the indium tin oxide layer.

[0010] In one embodiment, the transparent reflective layer includes three titanium dioxide reflective layers, and the silver reflective layer is disposed between two adjacent titanium dioxide reflective layers.

[0011] In one embodiment, the photovoltaic power generation layer further includes a window layer, and the window layer is provided on a side of the transparent absorption layer facing away from the transparent reflection layer.

[0012] In one embodiment, the photovoltaic power generation layer further includes a buffer layer, and the buffer layer is disposed between the transparent absorption layer and the window layer.

[0013] In one embodiment, the photovoltaic power generation layer further includes an anti-reflection layer, and the anti-reflection layer is provided on a side of the transparent protective layer facing the transparent absorption layer.

[0014] In one embodiment, the photovoltaic power generation layer further includes at least two front electrodes, and the two front electrodes are respectively disposed on the two transparent conductive layers.

[0015] In one embodiment, the transparent absorption layer includes a perovskite light absorption layer.

[0016] In the technical solution of this utility model, when sunlight shines on the photovoltaic car cover, the transparent absorption layer converts light energy into electrical energy. The transparent conductive layers on both sides of the transparent absorption layer serve as the positive and negative electrodes, respectively. The transparent protective layer and the transparent conductive layer are made of transparent materials, allowing light to pass through and enter the transparent absorption layer for photoelectric conversion. Current flows between the two transparent conductive layers and can connect to an external circuit through the two transparent conductive layers to form a loop to provide power. Furthermore, while the transparent absorption layer is performing photoelectric conversion, it also allows light to pass through and enter the transparent reflective layer. The transparent reflective layer is configured to reflect infrared and ultraviolet rays while transmitting visible light. The infrared and ultraviolet rays reflected by the transparent reflective layer then pass through the transparent absorption layer for secondary absorption, thereby improving the photoelectric conversion efficiency. Furthermore, when the infrared and ultraviolet rays are reflected, the photovoltaic car cover attached to the vehicle also provides heat insulation. Furthermore, since visible light can pass through the transparent reflective layer, and the first transparent substrate layer and the mounting adhesive layer are both made of transparent materials, the photovoltaic power generation cover appears transparent as a whole, so that the photovoltaic power generation cover attached to the car can show the color of the car itself, which is more applicable and meets the functional requirements required by this application. At the same time, integrating photovoltaic power generation into the car cover can achieve full coverage of the car paint surface to obtain a larger light-receiving area, and can also improve the vehicle-mounted photovoltaic power generation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1This is a cross-sectional schematic diagram of an embodiment of the photovoltaic power generation car cover provided by the utility model.

[0019] Description of Figure Numbers:

[0020] 100. Photovoltaic power generation cover; 1. Mounting adhesive layer; 2. First transparent substrate layer; 3. Transparent reflective layer; 31. Titanium dioxide reflective layer; 32. Silver reflective layer; 33. Indium tin oxide layer; 34. Nickel layer; 4. Second transparent substrate layer; 5. Photovoltaic power generation layer; 51. Transparent conductive layer; 52. Transparent absorption layer; 53. Window layer; 54. Buffer layer; 55. Anti-reflection layer; 56. Front electrode; 6. Transparent protective layer.

[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] Photovoltaic thin film is a solar energy conversion technology based on thin film materials. With the continuous development of scientific research and engineering practice, photovoltaic thin film technology plays an important role in the growing solar energy market.

[0026] In the automotive sector, photovoltaic thin-film technology can be used to achieve onboard solar power generation and enhance vehicle energy efficiency. However, photovoltaic films are typically attached to the vehicle body or windows. However, most current photovoltaic films are not light-transmitting and therefore cover the vehicle paint, making them less suitable for use.

[0027] In view of this, the present invention proposes a photovoltaic power generation car cover, please refer to Figure 1 , is an embodiment of the photovoltaic power generation car cover, and the photovoltaic power generation car cover will be described in detail below with reference to specific drawings.

[0028] See also Figure 1 The photovoltaic power generation car cover 100 includes a stacked mounting adhesive layer 1, a first transparent substrate layer 2, a transparent reflective layer 3, a second transparent substrate layer 4, a photovoltaic power generation layer 5 and a transparent protective layer 6; wherein the photovoltaic power generation layer 5 includes two transparent conductive layers 51 and a transparent absorption layer 52 located between the two transparent conductive layers 51.

[0029] In the technical solution of the present invention, when sunlight shines on the photovoltaic car cover 100, the transparent absorption layer 52 converts the light energy into electrical energy. The transparent conductive layers 51 on either side of the transparent absorption layer 52 serve as the positive and negative electrodes, respectively. The transparent protective layer 6 and the transparent conductive layer 51 are made of transparent materials, allowing light to pass through and enter the transparent absorption layer 52 for photoelectric conversion. Current flows between the two transparent conductive layers 51 and connects to an external circuit through the two transparent conductive layers 51, forming a loop to provide power. Furthermore, while performing photoelectric conversion, the transparent absorption layer 52 also allows light to pass through and enter the transparent reflective layer 3. The transparent reflective layer 3 is configured to reflect infrared and ultraviolet rays while transmitting visible light. The infrared and ultraviolet rays reflected by the transparent reflective layer 3 are then reabsorbed by the transparent absorption layer 52, thereby improving the photoelectric conversion efficiency. Furthermore, by reflecting the infrared and ultraviolet rays, the photovoltaic car cover 100 attached to the vehicle also provides thermal insulation. Furthermore, since visible light can pass through the transparent reflective layer 3, and the first transparent substrate layer 2 and the mounting adhesive layer 1 are both made of transparent materials, the photovoltaic power generation car cover 100 appears transparent as a whole, so that the photovoltaic power generation car cover 100 attached to the car can show the color of the car itself, and is more applicable, meeting the functional requirements required by this application. At the same time, integrating photovoltaic power generation into the car cover can achieve full coverage of the car paint surface to obtain a larger light-receiving area, and can also improve the vehicle-mounted photovoltaic power generation performance.

[0030] Specifically, the transparent reflective layer 3 includes at least two titanium dioxide reflective layers 31 and a silver reflective layer 32 located between the two titanium dioxide reflective layers 31. It should be noted that the material of the first transparent substrate layer 2 and the second transparent substrate layer 4 proposed in this application includes flexible transparent TPU or TPH film. The titanium dioxide reflective layer 31 is formed by depositing titanium dioxide by magnetron sputtering, so as to utilize its high refractive index to reflect infrared light and achieve a certain heat insulation effect. On this basis, the deposited silver reflective layer 32 is mainly used to reflect infrared and ultraviolet rays to provide excellent heat insulation performance, meeting the functional requirements of transparency, light reflection and heat insulation required by the transparent reflective layer 3. On this basis, the transparent reflective layer 3 includes three titanium dioxide reflective layers 31, and the silver reflective layer 32 is provided between two adjacent titanium dioxide reflective layers 31. This combination enhances the light reflection performance and the required heat insulation performance.

[0031] Specifically, an indium tin oxide layer 33 is disposed between the two titanium dioxide reflective layers 31. This indium tin oxide layer 33 is positioned on the side of the silver reflective layer 32 closest to the first transparent substrate layer 2. Depositing the indium tin oxide layer 33 on the titanium dioxide reflective layer 31 primarily facilitates the growth of the subsequent silver reflective layer 32, allowing it to quickly form a continuous, dense structure. This significantly reduces the thickness of the subsequent silver reflective layer 32, lowering its reflectivity in the visible light band. This allows the original metallic paint color to be directly visible, meeting functional requirements. Furthermore, the dense silver reflective layer 32 effectively reflects infrared and ultraviolet rays, improving thermal insulation performance.

[0032] In addition, a nickel layer 34 is disposed between the two titanium dioxide reflective layers 31. The nickel layer 34 is located on the side of the silver reflective layer 32 facing away from the indium tin oxide layer 33. The nickel layer 34 deposited on the silver reflective layer 32 primarily protects the silver reflective layer 32, preventing oxidation and reduced thermal insulation. This ensures that the infrared reflectivity of the silver reflective layer 32 does not decrease with extended use, thereby extending the service life of the photovoltaic car cover 100 and ensuring a long-lasting high thermal insulation effect. In summary, the indium tin oxide layer 33 and the nickel layer 34 primarily assist the silver reflective layer 32 in better performing its reflective function, achieving a better thermal insulation effect.

[0033] In addition, the transparent conductive layer 51 can be a zinc oxide layer or a tin dioxide layer. In this embodiment, the transparent conductive layer 51 is a zinc oxide layer. The zinc oxide layer has a high light transmission rate and can effectively pass through sunlight, reducing the loss of sunlight entering the photovoltaic film. At the same time, the zinc oxide layer has strong corrosion resistance and can maintain stable electrical properties in harsh environments, thereby maintaining the power generation performance of the photovoltaic power generation vehicle body.

[0034] In addition, the photovoltaic power generation layer 5 further includes a window layer 53, which is disposed on the side of the transparent absorption layer 52 facing away from the transparent reflective layer 3. The window layer 53 is configured as a zinc oxide layer. The zinc oxide layer has high transparency, allowing sunlight to enter the transparent absorption layer 52 and reducing light loss during the incident process. The zinc oxide layer also has good electrical conductivity, effectively conducting electrons to the transparent conductive layer 51 and collecting charges, thereby improving the electrical conductivity of the photovoltaic power generation layer 5.

[0035] In addition, the photovoltaic power generation layer 5 further includes a buffer layer 54, which is disposed between the transparent absorption layer 52 and the window layer 53. The buffer layer 54 is disposed between the transparent absorption layer 52 and the window layer 53 and can be configured as a cadmium sulfide layer or an indium trisulfide layer to balance the energy band difference between the transparent absorption layer 52 and the transparent conductive layer 51, thereby improving the charge separation efficiency and thus improving the energy conversion efficiency of the photovoltaic power generation layer 5.

[0036] In addition, the photovoltaic power generation layer 5 further includes an anti-reflection layer 55, which is disposed on the side of the transparent protective layer 6 facing the transparent absorption layer 52. The anti-reflection layer 55 can be configured as a silicon dioxide layer or a magnesium fluoride layer, which can reduce the reflectivity of sunlight and increase the absorptivity of the photovoltaic power generation layer 5 to sunlight, thereby improving the photoelectric conversion efficiency of the photovoltaic power generation layer 5.

[0037] In addition, the photovoltaic power generation layer 5 further includes at least two front electrodes 56, each disposed on one of the two transparent conductive layers 51. The front electrodes 56 are capable of effectively collecting the charge generated in the photovoltaic power generation layer 5 and transmitting the collected charge to a connected external circuit. It is understood that the front electrodes 56 can be configured as either a polytriphenylamine electrode or a nickel-aluminum electrode. In this embodiment, a nickel-aluminum electrode is selected, as the nickel-aluminum electrode has excellent corrosion resistance and can provide protection for the front electrodes 56 under various environmental conditions.

[0038] In addition, the transparent absorption layer 52 includes a perovskite light-absorbing layer. Specifically, the perovskite light-absorbing layer is configured as an electron transport layer, a light-absorbing layer, and a hole transport layer. The hole transport layer and the electron transport layer are carrier transport layers. The hole transport layer material is PEDOT:PSSAI4083 and NiOx, and the electron transport layer material is PCBM and ZnO. Both are transparent structures. The light-absorbing layer material is CH3NH3PbI3-xClx and CH3NH3PbI3, and is a translucent structure. This achieves the transparency of the perovskite light-absorbing layer. Although the light-absorbing layer is a translucent structure, the photovoltaic power generation car cover 100 affects the color of the vehicle body paint, but still appears as the original paint color of the vehicle body, meeting the requirements to a certain extent.

[0039] In addition, the transparent protective layer 6 is configured as wear-resistant polyurethane, which is coated on the outside of the photovoltaic power generation layer 5 by a winding coating and bonding line from the original liquid material. The coated liquid material is dried to make the liquid wear-resistant polyurethane material solid, thereby forming a scratch-resistant transparent protective layer 6.

[0040] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A photovoltaic power generation car cover, characterized in that: It includes a stacked mounting adhesive layer, a first transparent substrate layer, a transparent reflective layer, a second transparent substrate layer, a photovoltaic power generation layer, and a transparent protective layer; The photovoltaic power generation layer includes two transparent conductive layers and a transparent absorption layer located between the two transparent conductive layers.

2. The photovoltaic power generation car cover according to claim 1, characterized in that: The transparent reflective layer includes at least two titanium dioxide reflective layers and a silver reflective layer located between the two titanium dioxide reflective layers.

3. The photovoltaic power generation car cover according to claim 2, characterized in that: An indium tin oxide layer is further provided between the two titanium dioxide reflective layers, and the indium tin oxide layer is provided on a side of the silver reflective layer close to the first transparent substrate layer.

4. The photovoltaic power generation car cover according to claim 3, characterized in that: A nickel layer is further provided between the two titanium dioxide reflective layers, and the nickel layer is located on a side of the silver reflective layer away from the indium tin oxide layer.

5. The photovoltaic power generation car cover according to claim 2, characterized in that: The transparent reflective layer includes three titanium dioxide reflective layers, and the silver reflective layer is arranged between two adjacent titanium dioxide reflective layers.

6. The photovoltaic power generation car cover according to claim 1, characterized in that: The photovoltaic power generation layer further includes a window layer, which is arranged on a side of the transparent absorption layer facing away from the transparent reflection layer.

7. The photovoltaic power generation car cover according to claim 6, characterized in that: The photovoltaic power generation layer further includes a buffer layer, and the buffer layer is arranged between the transparent absorption layer and the window layer.

8. The photovoltaic power generation car cover according to claim 7, characterized in that: The photovoltaic power generation layer further includes an anti-reflection layer, and the anti-reflection layer is arranged on a side of the transparent protective layer facing the transparent absorption layer.

9. The photovoltaic power generation vehicle cover according to any one of claims 6 to 8, characterized in that: The photovoltaic power generation layer further includes at least two front electrodes, and the two front electrodes are respectively arranged on the two transparent conductive layers.

10. The photovoltaic power generation car cover according to claim 1, characterized in that: The transparent absorption layer includes a perovskite light absorption layer.

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