CN207009457U - A kind of photovoltaic module high reflecting strips and photovoltaic module - Google Patents

Abstract

The utility model relates to a high-reflective strip for photovoltaic components and a photovoltaic component. The high-reflective strip comprises a base material layer, a highly weather-resistant adhesive layer formed on one side of the base material layer, and a The high reflection and high weather resistance layer on the other side, the reflectivity of the high reflection and high weather resistance layer in the 400~1100nm band is more than 80%, and the high reflection and high weather resistance layer is a fluorocarbon resin type high reflection and high weather resistance layer, polyester One of high reflective and high weather resistance layer, epoxy resin type high reflective and high weather resistance layer, polyurethane type high reflective and high weather resistance layer, acrylic type high reflective and high weather resistance layer. The high-reflective strip of the utility model has a reflectivity of more than 85% in the 400-1100nm wave band, and it is used on a photovoltaic module to reuse the sunlight irradiated on the welding strip through reflection, which can improve the overall power generation efficiency by 1 % above, and has the advantages of simple structure, good weather resistance, low production cost, and easy product promotion.

Description

High reflective strip for photovoltaic module and photovoltaic module

technical field

The utility model relates to the technical field of solar cells, in particular to a high reflective strip for a photovoltaic module and a photovoltaic module.

Background technique

Solar cell modules (ie, photovoltaic modules) are usually a laminated structure, mainly including glass layers, EVA encapsulation layers, silicon wafers, EVA encapsulation layers and solar cell backplanes. The unused areas in ordinary modules include solder strips, battery gaps, battery chamfers, upper and lower sides of the module, and left and right sides of the module. These areas account for about 15% of the overall module, which causes a lot of waste of light sources.

In order to reduce the waste of light sources, reflective films are usually installed in these areas. For example, Chinese Patent Publication No. CN106461193A discloses a light redirecting film for a solar module, the light redirecting film defines a longitudinal axis, and includes a base layer, a plurality of microstructures arranged in an orderly manner, and a reflective layer. The microstructures protrude from the base layer and each extend continuously over the base layer to define a corresponding major axis, the major axis of at least one of the microstructures being inclined relative to the longitudinal axis . The reflective layer is disposed on the microstructure opposite to the base layer. The alignment film achieves the reflective effect of the alignment film by setting a specific microstructure and coating the reflective layer on the microstructure. Because the alignment film needs to have a microstructure before coating the reflection layer, its preparation process is complicated. . In addition, the reflective layer of the alignment film can be made of organic materials such as acrylic resin, but its weather resistance is poor, and the reflectivity of the coating itself is poor. The base layer adopts ordinary film, and the film itself has no reflective effect.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a high-reflective strip for photovoltaic modules, which has excellent weather resistance, reflectivity, UV aging resistance, and damp heat aging.

The utility model also provides a photovoltaic assembly.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A high-reflective strip for photovoltaic modules, comprising a substrate layer and a high weather-resistant adhesive layer formed on one side of the substrate layer, and the high-reflective strip also includes a High-reflection and high-weather resistance layer, the reflectance of the high-reflection and high-weather-resistance layer in the 400-1100nm band is more than 80%, and the high-reflection and high-weather resistance layer is a fluorocarbon resin type high-reflection and high-weather resistance layer, a polyester type high-reflection and high-weather resistance layer One of the weather-resistant layer, epoxy resin type highly reflective and highly weather-resistant layer, polyurethane type highly reflective and highly weather-resistant layer, and acrylic type highly reflective and highly weather-resistant layer.

Preferably, the reflectance of the high reflection and high weather resistance layer in the 400-1100 nm band is above 90%.

Further, a plurality of raised structures are formed on the surface of the high-reflection and high-weather-resistant layer, and the raised structures are formed by pressing the surface of the high-reflection and high-weather-resistant layer.

Furthermore, a plurality of the raised structures are distributed sequentially, and the height of the raised structures is 15-30 microns. In some embodiments, each of the raised structures is a prism structure with an apex angle of 113°-127°. Specifically, the raised structure is a cone-shaped structure.

Still further preferably, the included angle between the extending line of the protruding structure in the longitudinal direction and the extending line of the high reflective strip in the longitudinal direction is 40°-50°. Most preferably 45°.

In some embodiments of the present utility model, the thickness of the high reflection and high weather resistance layer is 15-100 microns.

The high-reflective strip of the present invention has a reflectivity of more than 85% in the 400-1100nm band, and has excellent performances such as ultraviolet resistance, damp heat aging and the like.

Preferably, the high-reflective strip has a reflectivity of more than 95% in the 400-1100nm band.

The average power of the photovoltaic module adopting the high reflective strip of the invention can be increased by more than 1.0%.

Further, the high reflection and high weather resistance layer is a high reflection and high weather resistance coating or a high reflection and high weather resistance film layer.

In some embodiments of the present utility model, the raw materials for preparing the high-reflection and high-weather-resistant layer include matrix resin and reflective filler, and the added amount of the reflective filler accounts for 10-60% of the added amount of the matrix resin. The matrix resin is one or more of fluorocarbon resin, polyester, epoxy resin, polyurethane resin and acrylic resin.

Further, the reflective filler is one or more of titanium dioxide, mica powder, silicon dioxide, pearl powder, silver-coated glass, glass microspheres, barium sulfate, calcium carbonate, silver paste, and aluminum paste. It is preferably titanium dioxide, more preferably rutile titanium dioxide, which can be ordinary rutile titanium dioxide, or rutile titanium dioxide with the special function of converting ultraviolet or infrared into visible light, or a mixture of the two.

In some specific embodiments of the present invention, for example, the raw materials for preparing the fluorocarbon resin coating consist of fluorocarbon resin and reflective filler.

The fluorocarbon resin is a fluorocarbon resin containing hydroxyl or amino groups, such as tetrafluoroethylene-vinyl ester copolymer, tetrafluoroethylene-vinyl ether copolymer, chlorotrifluoroethylene-vinyl ester copolymer, trifluoroethylene One or more mixtures of vinyl chloride-vinyl ether copolymers. The reflective filler is one or more of titanium dioxide, mica powder, silicon dioxide, pearl powder, silver-coated glass, glass microspheres, barium sulfate, calcium carbonate, silver paste, and aluminum paste. It is preferably titanium dioxide, silver paste, and more preferably rutile titanium dioxide, which can be ordinary rutile titanium dioxide, or rutile titanium dioxide with the special function of converting ultraviolet or infrared into visible light, or a mixture of the two.

In some embodiments of the present utility model, the fluorocarbon resin type high reflection and high weather resistance coating, the polyester type high reflection and high weather resistance coating, the epoxy resin type high reflection and high weather resistance coating, the polyurethane type high reflection Coating materials for high weather-resistant coatings and acrylic high-reflective high-weather-resistant coatings are also commercially available. The fluorocarbon resin type high reflection and high weather resistance film layer, polyester type high reflection and high weather resistance film layer, epoxy resin type high reflection and high weather resistance film layer, polyurethane type high reflection and high weather resistance film layer, acrylic type high reflection and high weather resistance film layer Films used for the layers are also commercially available.

In some embodiments of the present utility model, the thickness of the high reflection and high weather resistance layer is 1-30 microns, preferably 2-10 microns.

In some embodiments of the present utility model, the substrate layer is a high reflective film substrate or a foamed high reflective film substrate, and the high reflective film substrate or the foamed high reflective film substrate is at 400- The 1100nm band has a reflectivity of more than 85%.

Preferably, the high-reflection film substrate or the foamed high-reflection film substrate has a reflectivity of more than 95% in the 400-1100nm band.

Wherein, the high reflective film substrate is prepared through a non-foaming process. The foamed high-reflection film substrate is prepared through a foaming process.

Preferably, the substrate layer is a highly reflective polyethylene terephthalate film or a foamed highly reflective polyethylene terephthalate film, a highly reflective polyethylene naphthalate film or One of a foamed highly reflective polyethylene naphthalate film, a highly reflective polybutylene phthalate film, or a foamed highly reflective polybutylene phthalate film.

In some embodiments of the present invention, the thickness of the substrate layer is 10-150 microns, preferably 20-100 microns, and may be 50 microns, 75 microns or 100 microns.

In some embodiments of the present invention, the film used in the substrate layer can be obtained commercially.

In some embodiments of the present invention, the film used in the substrate layer can also be self-produced, and can be a foamed high-reflection film substrate prepared by foaming, or prepared by adding special reflective fillers High reflective film substrates, or foamed high reflective film substrates prepared for foaming and adding reflective fillers. Preferably, the substrate layer is a high reflective film substrate prepared by adding special reflective fillers, or a foamed high reflective film substrate prepared for foaming and adding reflective fillers. The reflective filler is one or more of titanium dioxide, mica powder, silicon dioxide, pearl powder, silver-coated glass, glass microspheres, barium sulfate, calcium carbonate, silver paste, and aluminum paste. Titanium dioxide is preferred.

In some embodiments of the present invention, the high-reflection film substrate or the foamed high-reflection film substrate also has excellent ultraviolet resistance.

In other embodiments of the present invention, an organic anti-ultraviolet functional material and/or an inorganic anti-ultraviolet functional material is added when preparing the high-reflection film substrate or the foamed high-reflection film substrate.

Preferably, the inorganic anti-ultraviolet functional material is one or more mixtures of titanium dioxide, barium sulfate, zinc oxide, cerium oxide, talc, and calcium carbonate.

Preferably, the organic anti-ultraviolet functional material is one or a mixture of salicylates, benzophenones, benzotriazoles, substituted acrylonitriles, triazines and hindered amines.

In some embodiments of the present utility model, the high weather-resistant adhesive layer can be pressure-sensitive adhesive, hot-melt adhesive or semi-cured adhesive, which needs to have good UV aging resistance and damp heat aging performance, and has the same characteristics as metal products. Good initial adhesion performance, and after lamination, it has a peeling force of more than 4N/cm with the solder tape of the photovoltaic module.

Preferably, the pressure-sensitive adhesive can be acrylic, polyester, polyurethane, silicone, natural rubber, polyvinyl ether, etc., preferably acrylic, polyurethane and silicone.

Preferably, the hot melt adhesive can be polyester, ethylene and its copolymers (EVA, EEA, EAA, EVAL), polyurethane, polyamide, polyolefin, styrene, etc., preferably polyolefin Classes and vinyl polymers.

Preferably, the prepreg film can be polyurethane, polyester, acrylic, epoxy, polyamide, etc.; preferably polyurethane, acrylic and epoxy.

In some embodiments of the present invention, the thickness of the highly weather-resistant adhesive layer may be 1-100 microns, preferably 5-30 microns, and may be 15 microns, 20 microns or 25 microns.

Another technical solution of the present utility model is: a photovoltaic module including the above-mentioned high-reflective strip.

Preferably, the photovoltaic module includes a glass plate, a first EVA adhesive layer, a cell unit, a second EVA adhesive layer, and a back plate arranged in sequence in the up and down direction, and the cell unit includes a plurality of cell sheets, a plurality of The battery sheets are electrically connected by a plurality of welding strips, and the high reflective strip is pasted on the surface of each of the welding strips and/or between the battery pieces, and the high reflection and high weather resistance of the high reflective strip A layer faces the first EVA adhesive layer.

In some embodiments of the present invention, a plurality of battery cells are connected in series through a welding ribbon to form a battery unit. The cell unit, EVA, and back sheet with high reflective strips are arranged in the up and down direction and then laminated to prepare the finished photovoltaic module.

Due to the implementation of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art:

The high-reflective strip of the utility model has a reflectivity of more than 85% in the 400-1100nm band. When it is used on a photovoltaic module, the sunlight irradiated on the welding strip can be reused after reflection, and the overall power generation efficiency can be improved by 1. More than %, and has the advantages of simple structure, good weather resistance, low production cost and easy product promotion.

Description of drawings

Fig. 1 is the side view structural representation of the utility model highly reflective strip;

Fig. 2 is the front structural schematic diagram of the utility model highly reflective strip;

Fig. 3 is a top view schematic diagram of the unpasted high-reflective strip of the photovoltaic module of the present invention (the glass plate and the first EVA pasting layer are not shown)

Fig. 4 is a schematic diagram of an enlarged side view of place A in Fig. 3;

In the figure: 1. High reflection and high weather resistance layer; 11. Protruding structure; 2. Substrate layer; 3. High weather resistance adhesive layer; 4. Glass plate; 5. The first EVA adhesive layer; 6. Battery sheet; 7. High reflective strip; 8. Second EVA adhesive layer; 9. Back panel; 10. Welding tape.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Examples of the described embodiments are shown in the drawings, wherein like or similar reference numerals designate like or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

The utility model provides a high-reflective strip for photovoltaic modules. When in use, the high-reflective strip is pasted on the welding strip or between the battery sheets of the module, so that the light irradiated on the welding strip and between the battery sheets is reflected. It is reused by the components to improve the power generation efficiency of the components, so that the overall efficiency of the components is increased by more than 1.0%, and it has excellent UV aging resistance, damp heat aging and other properties.

As shown in Figures 1-2, the high-reflective strip for photovoltaic modules includes a substrate layer 2, a high weather-resistant adhesive layer 3 formed on one side of the substrate layer 2, and a high Reflective high weather resistance layer 1, the reflectivity of the high reflection high weather resistance layer 1 in the 400-1100nm band is more than 80%, the high reflection high weather resistance layer 1 is a fluorocarbon resin type coating, a polyester type coating, an epoxy resin type coating One of layer, polyurethane type coating, acrylic type coating.

A plurality of protruding structures 11 are formed on the surface of the high reflection and high weather resistance layer 1 , and the protrusion structures 11 are formed by pressing the surface of the high reflection and high weather resistance layer. A plurality of protruding structures 11 are distributed sequentially, and each protruding structure 11 is a cone-shaped structure, with an apex angle α of 113°-127°, and a protruding height h of 15-30 microns. The included angle between the longitudinal extension line of each prism structure and the longitudinal extension line of the high reflective strip is 40°-50°.

When the high-reflective strip is used on the photovoltaic module, multiple cells are connected in series through the ribbon to form a cell unit, and the high-reflective strip is attached to the surface of the ribbon, and then the glass plate, EVA, and the battery with the high-reflective strip The sheet unit, EVA, and back sheet are arranged in the vertical direction and then laminated to prepare a finished photovoltaic module. The structure of the photovoltaic module is shown in Figure 3-4. The junction layer 5, the cell unit, the second EVA adhesive layer 8 and the back plate 9, the cell unit includes a plurality of battery sheets 6, and the plurality of battery sheets 6 are electrically connected by a plurality of welding ribbons 10, and each welding ribbon The surface of 10 is pasted with highly reflective strip 7, the highly weather-resistant adhesive layer 3 of the highly reflective strip 7 is in contact with the surface of the welding strip 10, and the highly reflective and highly weather-resistant layer 1 of the highly reflective strip 7 faces the first EVA adhesive layer 5.

The preparation method of the utility model photovoltaic module comprises the following steps:

(1) Preparation of high-reflective strips: Coating or laminating the material for preparing the high-reflective and high-weather-resistant layer on one side of the substrate layer, and then pressing the surface of the high-reflective and high-weather-resistant layer with a pressure roller to form a raised structure on the surface ; The material of the high weather resistance adhesive layer is coated on the other side of the substrate layer to make a high reflective strip.

(2) Preparation of photovoltaic modules: connect multiple cells in series with ribbons to make cell units; cut the high-reflective strips into 1mm or other widths as wide as the ribbons; attach the cut high-reflective strips On the surface of the ribbon; the glass plate, EVA, cell unit with high reflective strips, EVA and back plate are arranged in sequence in the up and down direction and laminated to prepare a photovoltaic module.

The utility model is further described below through specific embodiments.

Example 1

This embodiment provides a high-reflective strip for photovoltaic modules, including a base material layer 2, a highly weather-resistant adhesive layer 3 formed on one side of the base material layer 2, and a high-reflection high-gloss strip formed on the other side of the base material layer 2. The weather-resistant layer 1, the high-reflection and high-weather-resistance layer 1 is a fluorocarbon resin coating, the thickness H of the high-reflection and high-weather-resistance layer 1 is 35 microns, and a plurality of prism structures 11 are formed on the surface of the high-reflection and high-weather-resistance layer 1, and the height of the protrusion is h is 25 microns, the apex angle α is 120°, and the included angle between the longitudinal extension line of the prism structure and the longitudinal extension line of the high-reflective strip is 45°.

The high-reflection and high-weather-resistance layer 1 of this embodiment adopts hydroxyl-containing fluorocarbon resin (FEVE), which is produced by Sanai Fu Zhonghao: ZHM-2 and high-reflection titanium dioxide (W1335 produced by Shanghai Everbright Trading). For the coating, the mass ratio of FEVE to high inverse titanium dioxide is 50:50, and the coating thickness is 10um.

The substrate layer 2 of this embodiment is a foamed high-weather-resistant and high-reflective PET film prepared by adopting a foaming process and adding reflective fillers, which has a reflectivity of more than 95% in the 400-1100nm band, and a thickness of 10-150 microns. In this example the thickness is 75 microns. Specifically, the reflective filler is titanium dioxide, and the added amount accounts for 10% of the mass of the polyester.

The highly weather-resistant adhesive layer 3 in this embodiment is a high-weather-resistant acrylic pressure-sensitive adhesive with a thickness of 1-100 microns, and the thickness in this example is 20 microns.

The preparation method of the high-reflective strip includes the following steps: coating the material for preparing the high-reflection and high-weather-resistance layer on one side of the base layer, curing, and the thickness H is 35 microns, and then pressing the surface of the high-reflection and high-weather-resistance layer with a pressure roller, so that Its surface is formed with a prism structure with a convex height h of 25 microns and an apex angle α of 120°. The angle between the longitudinal extension line of the prism structure and the longitudinal extension line of the high-reflective strip is 45°; The material of the first layer is coated on the other side of the substrate layer and cured to make a highly reflective strip.

The high-reflective strip of this embodiment is used on photovoltaic modules, and its preparation method is: a plurality of cells are connected in series with a ribbon to form a cell unit; the high-reflective strip is cut into 1mm or other widths the same as the ribbon Laminate the cut high-reflective strips on the surface of the ribbon; arrange the glass plate, EVA, cell unit with high-reflective strips, EVA and back sheet in sequence in the up and down direction to prepare a photovoltaic module.

Example 2

This embodiment provides a high-reflective strip for photovoltaic modules, except for the following, the others are the same as embodiment 1, wherein,

High reflection and high weather resistance layer 1 is made of hydroxyl-containing fluorocarbon resin (FEVE), which is produced by Sanai Fuzhonghao: ZHM-2 and mirror silver paste (METALURE A-2010 produced by Germany Erka), the prepared coating , The mass ratio of FEVE to mirror silver paste is 160:3, and the coating thickness is 10um.

The substrate layer 2 is a foamed high-weather-resistant and high-reflective PET film prepared by a foaming process and adding reflective fillers. It has a reflectivity of more than 95% in the 400-1100nm band and a thickness of 10-150 microns. In this example, the thickness is 50 microns. Specifically, the reflective filler is titanium dioxide, and the added amount accounts for 10% of the mass of the polyester.

The highly weather-resistant adhesive layer 3 is a high-weather resistant acrylic pressure-sensitive adhesive with a thickness of 1-100 microns, and the thickness in this example is 20 microns.

The preparation method of the high reflective strip is the same as in Example 1.

The high reflective strip of this embodiment is used on the photovoltaic module, and the preparation method of the photovoltaic module is the same as that in Example 1.

Example 3

This embodiment provides a high-reflective strip for photovoltaic modules, except for the following, the others are the same as embodiment 1, wherein,

The high-reflection and high-weather resistance layer 1 is made of hydroxyl-containing fluorocarbon resin (FEVE), which is produced by Sanai Fuzhonghao: ZHM-2 and high-reflection titanium dioxide are W1335 produced by Shanghai Everbright Trading. The prepared coating, FEVE and The mass ratio of high inverse titanium dioxide is 40:60.

Substrate layer 2 is a highly weather-resistant and highly reflective PET film prepared by adding reflective fillers and anti-ultraviolet functional materials. It has a reflectivity of more than 95% in the 400-1100nm band and a thickness of 10-150 microns. In this example, the thickness is 75 Microns.

The anti-ultraviolet functional material may be an organic anti-ultraviolet functional material and/or an inorganic anti-ultraviolet functional material. The specific organic anti-ultraviolet functional material is a mixture of benzotriazoles and substituted acrylonitriles. Such as UV531, UV326, TINUVIN770, TINUVIN571, etc., the inorganic anti-ultraviolet functional material is a mixture of titanium dioxide, cerium oxide, talcum powder, calcium carbonate, etc.

In this example, the reflective filler is titanium dioxide, which is added in an amount of 20% of the weight of the polyester; the anti-ultraviolet functional material is UV531, a mixture of titanium dioxide and cerium oxide, and the amount added is 0.5% of the weight of the polyester.

The highly weather-resistant adhesive layer 3 is a high-weather resistant acrylic pressure-sensitive adhesive with a thickness of 1-100 microns, and the thickness in this example is 20 microns.

The preparation method of the high reflective strip is the same as in Example 1.

The high reflective strip of this embodiment is used on the photovoltaic module, and the preparation method of the photovoltaic module is the same as that in Example 1.

The photovoltaic modules of Examples 1-3 were tested for performance, and the results are shown in Table 1.

Table 1

The high reflective strip of the utility model has excellent reflective performance, visible light transmittance of over 95% (400-1100nm), good weather resistance performance and component power improvement performance.

In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model has been described in detail above, its purpose is to allow those familiar with the technology in this field to understand the content of the utility model and implement it, and can not limit the scope of protection of the utility model. All equivalent changes or modifications made in essence shall fall within the protection scope of the present utility model.

Claims (10)

1. A high-reflective strip for photovoltaic modules, comprising a substrate layer and a high weather-resistant adhesive layer formed on one side of the substrate layer, characterized in that: the high-reflective strip also includes a layer formed on the substrate layer A high reflection and high weather resistance layer on the other side of the layer, the reflectance of the high reflection and high weather resistance layer in the 400~1100nm band is more than 80%, and the high reflection and high weather resistance layer is a fluorocarbon resin type high reflection and high weather resistance layer, One of polyester type high reflection and high weather resistance layer, epoxy resin type high reflection and high weather resistance layer, polyurethane type high reflection and high weather resistance layer, acrylic type high reflection and high weather resistance layer. 2. The high-reflective strip for photovoltaic modules according to claim 1, characterized in that: the surface of the high-reflection and high-weather-resistance layer is formed with a plurality of raised structures, and the raised structures are formed by making the high-reflective high The surface of the weather-resistant layer is formed by pressing. 3. The highly reflective strip for photovoltaic modules according to claim 2, characterized in that: a plurality of said raised structures are distributed in sequence, and the raised height is 15-30 microns. 4. The high reflective strip for photovoltaic modules according to claim 3, characterized in that: the included angle between the longitudinal extension line of the raised structure and the longitudinal extension line of the high reflective strip is 40°~50° . 5. The highly reflective strip for photovoltaic modules according to claim 1, characterized in that: the high reflective and weather resistant layer is a highly reflective and weather resistant coating or a highly reflective and weather resistant film layer. 6. The high-reflective strip for photovoltaic modules according to claim 1, characterized in that: the substrate layer is a high-reflection film substrate or a foamed high-reflection film substrate, and the high-reflection film substrate or hair The bubble-type high-reflection film substrate has a reflectivity of more than 85% in the 400-1100nm band. 7. The high reflective strip for photovoltaic modules according to claim 1, characterized in that: the substrate layer is a highly reflective polyethylene terephthalate film or a foamed highly reflective polyethylene terephthalate film Glycol ester film, highly reflective polyethylene naphthalate film or foamed highly reflective polyethylene naphthalate film, highly reflective polybutylene phthalate film or foamed highly reflective polyethylene One of the butylene phthalate films. 8 . The highly reflective strip for photovoltaic modules according to claim 1 , wherein the highly weather-resistant adhesive layer is pressure-sensitive adhesive, hot-melt adhesive or semi-cured adhesive film. 9. A photovoltaic module, comprising the high reflective strip according to any one of claims 1-8. 10. The photovoltaic module according to claim 9, characterized in that: the photovoltaic module comprises a glass plate, a first EVA adhesive layer, a cell unit, a second EVA adhesive layer and a back plate arranged in sequence in the up and down direction , the battery slice unit includes a plurality of battery slices, the plurality of battery slices are electrically connected by a plurality of welding strips, and the high reflective strip is pasted on the surface of each of the welding strips and/or between the battery slices , the highly reflective and highly weather-resistant layer of the highly reflective strip faces the first EVA adhesive layer.