High-transmittance photovoltaic cell back film

Abstract

The utility model relates to the technical field of photovoltaic cell back films, in particular to a high-transmittance photovoltaic cell back film which comprises a bearing frame, an operation mechanism is installed on the frame wall of the bearing frame, and the operation mechanism is composed of an L-shaped frame, a buffer plate A, an operation cylinder, a frame body, a buffer plate B and a buffer plate C in a combined mode. A set of symmetrical L-shaped frames are welded to the frame wall of the bearing frame, frame bodies are installed at the plate tops of the L-shaped frames through bolts, the frame bodies are connected through an operating cylinder in a welded mode, a set of symmetrical buffer plates B are welded to one side of the inner wall of the operating cylinder, and a set of symmetrical buffer plates C are welded to the other side of the inner wall of the operating cylinder. And the buffer plate B and the buffer plate C are mutually crossed, a buffer plate A is welded between the plate walls of the L-shaped frame, the construction waste slides to the conveying steel belt through the buffer plate A, rapid throwing of the high-rise construction waste is achieved, and the waste transfer efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell back films, in particular to a high-transmittance photovoltaic cell back film. Background Art

[0002] With the advancement of photovoltaic technology, the technical requirements for solar cell backsheets are also gradually increasing. Currently, solar cell backsheets must not only meet conventional requirements for production, processing, and outdoor applications, such as fracture strength, fracture growth rate, peel strength from EVA, UV resistance, and heat and humidity resistance, but also consider their impact on module power gain. With the rapid development of bifacial solar cell technology, high visible light transmittance solar cell backsheets have become one of the primary functional backsheets in market demand.

[0003] The main function of photovoltaic cell back films is to protect solar cells, EVA films, and other materials, resist environmental erosion such as humidity and heat, and provide weather resistance and insulation protection. Located on the back of the solar panel, the back film protects and supports the cells, and has reliable insulation, water resistance, and aging resistance. It can effectively block the intrusion of air, water vapor, and ultraviolet rays, thereby protecting the cells from damage and extending the service life of solar modules. In addition, the back film also has a high infrared reflectivity, which can reduce the temperature of the module, which is of great significance for improving the conversion efficiency and overall performance of solar cells. Existing photovoltaic cell back films have poor thermal insulation and light reflection properties. To this end, we propose a high-transmittance photovoltaic cell back film to facilitate increasing the light reflection and thermal insulation properties of the photovoltaic cell back film. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a high-transmittance photovoltaic cell back film.

[0005] The technical solution adopted by the utility model to solve its technical problems is a high-transmittance photovoltaic cell back film, which includes a back film body and a connecting layer. The bottom of the back film body is connected to a reflective mechanism, and the reflective mechanism is composed of a reflective layer, a reflective film and a protective layer. The top of the reflective film is sprayed with a reflective layer, and the reflective layer is located at the bottom of the back film body. The bottom of the reflective film is adhered to a protective layer, and the bottom of the protective layer is adhered to a connecting layer.

[0006] By adopting the above technical solution, the reflectivity of the back film main body is improved. A reflective mechanism is connected to the bottom of the back film main body. The reflective mechanism is composed of a reflective layer, a reflective film and a protective layer. The material of the reflective film is PU polymer film material. The PU polymer film material has good reflectivity. Since the reflective layer is sprayed on the top of the reflective film, the material of the reflective layer is metal particle reflective paint material. The metal particle reflective paint material can increase the reflectivity of the reflective film material. When light hits the back film main body, after the back film main body is transparent, the light passes through the reflective layer and passes through the back film main body again, thereby realizing re-illumination of the back film main body. A protective layer is adhered to the bottom of the reflective film. The material of the protective layer is polyester film material. The polyester film material has good explosion-proof properties and can protect the back film main body.

[0007] Specifically, it also includes a heat insulation mechanism, and the bottom of the connecting layer is connected to the heat insulation mechanism.

[0008] By adopting the above technical solution, the back film body can be thermally insulated and protected by the thermal insulation mechanism.

[0009] Specifically, the heat insulation structure is composed of a heat insulation layer, a waterproof layer and a bottom plate. The heat insulation layer is adhered to the bottom of the connecting layer, the waterproof layer is adhered to the bottom of the heat insulation layer, and the bottom plate is adhered to the bottom of the waterproof layer.

[0010] By adopting the above technical solution, when transporting the construction waste after being put into storage, a conveying mechanism is installed on the wall of the carrier frame, and the conveying mechanism is composed of a motor, a conveying steel belt, a conveying wheel A and a conveying wheel B. When the construction waste falls into the conveying steel belt, the motor is controlled by the controller. Since the output end of the motor is connected to one end of the conveying wheel A, the motor drives the conveying wheel A to rotate. Since the conveying wheel A and the conveying wheel B are connected by the conveying steel belt, the conveying steel belt is driven to rotate. After the bucket of the operating vehicle is placed at the bottom of the conveying steel belt, the construction waste falls into the bucket of the operating vehicle for transportation.

[0011] Specifically, the heat insulation layer is made of a heat insulation film, the waterproof layer is made of a waterproof film, and the bottom plate is made of a metal plate.

[0012] By adopting the above technical solutions, the thermal insulation film made of nano-composite material adopts advanced nanotechnology and has a more excellent thermal insulation effect. This material of thermal insulation film can reflect most of the infrared and ultraviolet rays in the solar spectrum, thereby significantly reducing heat transfer. The waterproof film has good waterproof properties, and the metal plate material has good protective properties.

[0013] Specifically, the reflective layer is made of metal particle reflective paint, the reflective film is made of PU polymer film, and the protective layer is made of polyester film.

[0014] By adopting the above technical solutions, the metal particle reflective paint material can increase the reflectivity of the reflective film material and improve the transmittance of the battery back film. The PU polymer film material has good reflectivity and the polyester film material has good explosion-proof properties.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model describes a high-transmittance photovoltaic cell back film, which improves the reflectivity of the back film body. A reflective mechanism is connected to the bottom of the back film body, and the reflective mechanism is composed of a reflective layer, a reflective film and a protective layer. The reflective film is made of a PU polymer film material, and the PU polymer film material has good reflectivity. Since a reflective layer is sprayed on the top of the reflective film, the reflective layer is made of a metal particle reflective paint material, and the metal particle reflective paint material can increase the reflectivity of the reflective film material. When light hits the back film body, after the back film body is transparent, the light passes through the reflective layer and passes through the back film body again, thereby realizing re-illumination of the back film body. A protective layer is adhered to the bottom of the reflective film, and the protective layer is made of a polyester film material. The polyester film material has good explosion-proof properties and can protect the back film body.

[0017] (2) The high-transmittance photovoltaic cell back film described in the present invention is used to transport the construction waste after it is placed. Since a conveying mechanism is installed on the wall of the carrier frame, the conveying mechanism is composed of a motor, a conveying steel belt, a conveying wheel A and a conveying wheel B. When the construction waste falls into the conveying steel belt, the motor is controlled by the controller. Since the output end of the motor is connected to one end of the conveying wheel A, the motor drives the conveying wheel A to rotate. Since the conveying wheel A and the conveying wheel B are connected by the conveying steel belt, the conveying steel belt is driven to rotate. After the bucket of the operating vehicle is placed at the bottom of the conveying steel belt, the construction waste falls into the bucket of the operating vehicle for transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 It is the main figure of the utility model;

[0020] Figure 2 This is a schematic diagram of the reflective mechanism structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the heat insulation structure of the utility model;

[0022] In the figure: 1. back film body; 2. reflective mechanism; 201. reflective layer; 202. reflective film; 203. protective layer; 3. connecting layer; 4. heat insulation mechanism; 401. heat insulation layer; 402. waterproof layer; 403. bottom plate. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] As an embodiment of the present invention, Figure 1 、 Figure 2 and Figure 3 As shown, the high-transmittance photovoltaic cell back film described in the present invention includes a back film body 1 and a connecting layer 3. The bottom of the back film body 1 is connected to a reflective mechanism 2, and the reflective mechanism 2 is composed of a reflective layer 201, a reflective film 202 and a protective layer 203. The top of the reflective film 202 is sprayed with a reflective layer 201, and the reflective layer 201 is located at the bottom of the back film body 1. The bottom of the reflective film 202 is adhered to the protective layer 203, and the bottom of the protective layer 203 is adhered to the connecting layer 3.

[0025] When in use, in order to improve the reflectivity of the back film main body 1, a reflective mechanism 2 is connected to the bottom of the back film main body 1, and the reflective mechanism 2 is composed of a reflective layer 201, a reflective film 202 and a protective layer 203. The material of the reflective film 202 is PU polymer film material, and the PU polymer film material has good reflectivity. Since the top of the reflective film 202 is sprayed with a reflective layer 201, the material of the reflective layer 201 is metal particle reflective paint material, and the metal particle reflective paint material can increase the reflectivity of the reflective film 202 material. When light hits the back film main body 1, after the back film main body 1 is transparent, the light passes through the reflective layer 201 and passes through the back film main body 1 again, thereby realizing re-illumination of the back film main body 1. A protective layer 203 is adhered to the bottom of the reflective film 202, and the material of the protective layer 203 is polyester film material. The polyester film material has good explosion-proof properties and can protect the back film main body 1.

[0026] like Figure 1 As shown, a heat insulation mechanism 4 is also included, and the bottom of the connecting layer 3 is connected to the heat insulation mechanism 4.

[0027] When in use, the back film body 1 can be thermally insulated and protected by the thermal insulation mechanism 4 .

[0028] like Figure 1 and Figure 3As shown, the thermal insulation mechanism 4 is composed of a thermal insulation layer 401, a waterproof layer 402 and a bottom plate 403. The thermal insulation layer 401 is adhered to the bottom of the connecting layer 3, the waterproof layer 402 is adhered to the bottom of the thermal insulation layer 401, and the bottom plate 403 is adhered to the bottom of the waterproof layer 402.

[0029] During use, when transporting the construction waste after being put into use, a conveying mechanism is installed on the wall of the carrier frame, and the conveying mechanism is composed of a motor, a conveying steel belt, a conveying wheel A and a conveying wheel B. When the construction waste falls into the conveying steel belt, the motor is controlled by the controller. Since the output end of the motor is connected to one end of the conveying wheel A, the motor drives the conveying wheel A to rotate. Since the conveying wheel A and the conveying wheel B are connected by the conveying steel belt, the conveying steel belt is driven to rotate. After the bucket of the operating vehicle is placed at the bottom of the conveying steel belt, the construction waste falls into the bucket of the operating vehicle for transportation.

[0030] like Figure 3 As shown, the material of the heat insulation layer 401 is a heat insulation film material, the material of the waterproof layer 402 is a waterproof film material, and the material of the bottom plate 403 is a metal plate material.

[0031] When in use, the thermal insulation film is made of nano-composite material and adopts advanced nanotechnology, which has a more excellent thermal insulation effect. This material of thermal insulation film can reflect most of the infrared and ultraviolet rays in the solar spectrum, thereby significantly reducing heat transfer. The waterproof film has good waterproof properties, and the metal plate material has good protection.

[0032] like Figure 2 As shown, the reflective layer 201 is made of metal particle reflective paint, the reflective film 202 is made of PU polymer film, and the protective layer 203 is made of polyester film.

[0033] When in use, the metal particle reflective paint material can increase the reflectivity of the reflective film 202 material and improve the transmittance of the battery back film. The PU polymer film material has good reflectivity and the polyester film material has good explosion-proof performance.

[0034] When the utility model is in use, in order to improve the reflectivity of the back film main body 1, a reflective mechanism 2 is connected to the bottom of the back film main body 1, and the reflective mechanism 2 is composed of a reflective layer 201, a reflective film 202 and a protective layer 203. The material of the reflective film 202 is a PU polymer film material, and the PU polymer film material has good reflectivity. Since the reflective layer 201 is sprayed on the top of the reflective film 202, the reflective layer 201 is made of a metal particle reflective paint material, and the metal particle reflective paint material can increase the reflectivity of the reflective film 202 material. When light hits the back film main body 1, after the back film main body 1 is transparent, the light passes through the reflective layer 201 and passes through the back film main body 1 again, thereby realizing the re-illumination of the back film main body 1. The protective layer 203 is adhered to the bottom of the reflective film 202 3. The material of the protective layer 203 is polyester film. The polyester film has good explosion-proof properties and can protect the back film body 1. When the construction waste after being placed is transported, a conveying mechanism is installed on the wall of the carrier frame. The conveying mechanism is composed of a motor, a conveying steel belt, a conveying wheel A and a conveying wheel B. When the construction waste falls into the conveying steel belt, the motor is controlled by the controller. Since the output end of the motor is connected to one end of the conveying wheel A, the motor drives the conveying wheel A to rotate. Since the conveying wheel A and the conveying wheel B are connected by the conveying steel belt, the conveying steel belt is driven to rotate. After the bucket of the operating vehicle is placed at the bottom of the conveying steel belt, the construction waste falls into the bucket of the operating vehicle for transportation.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-transmittance photovoltaic cell back film, characterized by: The invention comprises a back film body (1) and a connecting layer (3); the bottom of the back film body (1) is connected to a reflective mechanism (2); the reflective mechanism (2) is composed of a reflective layer (201), a reflective film (202) and a protective layer (203); the top of the reflective film (202) is sprayed with the reflective layer (201); the reflective layer (201) is located at the bottom of the back film body (1); the bottom of the reflective film (202) is adhered to a protective layer (203); the bottom of the protective layer (203) is adhered to a connecting layer (3).

2. The high-transmittance photovoltaic cell back film according to claim 1, characterized in that: It also includes a heat insulation mechanism (4), and the bottom of the connection layer (3) is connected to the heat insulation mechanism (4).

3. The high-transmittance photovoltaic cell back film according to claim 2, characterized in that: The heat insulation mechanism (4) is composed of a heat insulation layer (401), a waterproof layer (402) and a bottom plate (403); the heat insulation layer (401) is adhered to the bottom of the connection layer (3); the waterproof layer (402) is adhered to the bottom of the heat insulation layer (401); and the bottom plate (403) is adhered to the bottom of the waterproof layer (402).

4. The high-transmittance photovoltaic cell back film according to claim 3, characterized in that: The heat-insulating layer (401) is made of a heat-insulating film material, the waterproof layer (402) is made of a waterproof film material, and the bottom plate (403) is made of a metal plate material.

5. The high-transmittance photovoltaic cell back film according to claim 1, characterized in that: The material of the reflective layer (201) is a metal particle reflective paint material, the material of the reflective film (202) is a PU polymer film material, and the material of the protective layer (203) is a polyester film material.

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