Laminated body, battery and photovoltaic module

Abstract

The utility model belongs to the field of photovoltaic technology. The utility model discloses a laminated body. The laminated body comprises a barrier permeation layer, a high-temperature-resistant layer, a flame-retardant layer, a water vapor barrier layer and an insulating layer, the transmittance of the blocking and permeating layer to light with the wave band of 315-400 nm is smaller than or equal to 8%, and the transmittance of the blocking and permeating layer to light with the wave band of 750-1000 nm is larger than or equal to 50%; the high-temperature-resistant layer is arranged on one side of the barrier permeation layer; the flame-retardant layer is arranged on the side, away from the barrier permeation layer, of the high-temperature-resistant The water vapor blocking layer is arranged on the side, away from the high-temperature-resistant layer, of the flame- The insulating layer is arranged on the side, away from the flame-retardant layer, of the water vapor blocking layer. The utility model also discloses a battery. The utility model also discloses a photovoltaic module. The laminated body disclosed by the utility model is good in high temperature resistance, high in ultraviolet rejection rate, good in fireproof and flame-retardant effects and relatively high in safety.

Description

Technical Field

[0001] The present application belongs to the field of photovoltaic technology, and in particular relates to a laminate, a battery and a photovoltaic module. Background Art

[0002] With the development of batteries and photovoltaic modules, the performance requirements for packaging materials are getting higher and higher. Batteries and photovoltaic modules need to have ultra-high temperature resistance, UV aging resistance, flame retardancy and fire resistance. The packaging materials in related technologies have poor high temperature resistance, UV aging resistance and fire resistance. The poor high temperature resistance and fire retardancy of packaging materials will cause high-temperature combustion of batteries or photovoltaic modules, causing safety hazards. The poor UV aging resistance of packaging materials will seriously affect the service life of photovoltaic modules or batteries. Utility Model Content

[0003] The embodiment of the present application provides a laminated body, which has good high temperature resistance, high UV blocking rate, good fire retardant effect, and high safety.

[0004] An embodiment of the present application provides a laminate, which includes a barrier layer, a high temperature resistant layer, a flame retardant layer, a water vapor barrier layer and an insulating layer; the barrier layer has a transmittance of less than or equal to 8% for light in the 315-400nm band, and a transmittance of greater than or equal to 50% for light in the 750-1000nm band; the high temperature resistant layer is arranged on one side of the barrier layer; the flame retardant layer is arranged on a side of the high temperature resistant layer away from the barrier layer; the water vapor barrier layer is arranged on a side of the flame retardant layer away from the high temperature resistant layer; and the insulating layer is arranged on a side of the water vapor barrier layer away from the flame retardant layer.

[0005] Furthermore, the permeation barrier layer is a colored acrylic resin layer or a colored fluorocarbon resin layer; and the degree of crosslinking of the permeation barrier layer is greater than or equal to 90%.

[0006] Furthermore, the melting point of the high temperature resistant layer is greater than or equal to 300°C.

[0007] Furthermore, the high temperature resistant layer is one of a polyetheretherketone layer, a polysulfone layer, a polyimide layer, a polyarylate layer or a polyphenylene sulfide layer; and the thickness of the high temperature resistant layer is 10-50 μm.

[0008] Furthermore, the flame retardant layer is one of a polyurethane flame retardant resin layer, an epoxy flame retardant resin layer, a silicone flame retardant resin layer or an acrylic flame retardant resin layer.

[0009] Furthermore, the water vapor barrier layer is an oxide layer.

[0010] Furthermore, the electrical insulation strength of the insulating layer is greater than or equal to 6V / μm, the melting point of the insulating layer is greater than or equal to 150° C., and the thickness of the insulating layer is 25-150 μm.

[0011] Furthermore, the laminate also includes an adhesive layer, which is arranged on a side of the insulating layer away from the water vapor barrier layer; the adhesive layer is one of a polyurethane layer, an epoxy layer, a silicone layer, an acrylic layer or a polyolefin layer.

[0012] An embodiment of the present application also provides a battery, which includes any of the above-mentioned stacked bodies.

[0013] An embodiment of the present application also provides a photovoltaic module, which includes any of the above-mentioned laminates.

[0014] The laminate of the present application is achieved by arranging a water vapor barrier layer, a flame retardant adhesive layer, a high temperature resistant layer and a barrier transmission layer on the outside of the insulating layer, so that the laminate can have high temperature resistance, UV aging resistance and flame retardant fireproof properties at the same time, and has good packaging performance and safety. The laminate in the present application has high infrared transmittance and better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of a stacked body in one embodiment of the present application;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of a stacked body in another embodiment of the present application;

[0017] Figure 3 Schematic diagram of the cross-sectional structure of the laminate in Comparative Example 1;

[0018] Figure 4 Schematic diagram of the cross-sectional structure of the laminate in Comparative Example 2;

[0019] Figure 5 Schematic diagram of the cross-sectional structure of the laminate in Comparative Example 3;

[0020] Figure 6 This is a schematic diagram of the cross-sectional structure of the laminate in Comparative Example 4.

[0021] In the figure: a laminate 100 , a barrier layer 11 , a high temperature resistant layer 12 , a flame retardant layer 13 , a water vapor barrier layer 14 , an insulating layer 15 , and an adhesive layer 16 . DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0023] The present application embodiment provides a Figure 1The laminate 100 shown can be used as a packaging material for a battery or a photovoltaic module or for repairing a battery or a photovoltaic module. The laminate 100 includes a barrier layer 11, a high temperature resistant layer 12, a flame retardant layer 13, a water vapor barrier layer 14 and an insulating layer 15 in sequence. The barrier layer 11 is arranged at the outermost layer of the laminate 100. The barrier layer 11 has a transmittance of less than or equal to 8% for light in the 315-400nm band, and a transmittance of greater than or equal to 50% for light in the 750-1000nm band. The barrier layer 11 has a good ultraviolet blocking ability, can block ultraviolet light, protect the internal structure, and improve the ultraviolet aging resistance of the laminate 100. The barrier layer 11 also has a high infrared transmittance, can transmit infrared light well, and the internal infrared band can transmit more through the barrier layer 14, so that the heat inside the laminate 100 is more dissipated, and the heat dissipation capacity of the laminate 100 is improved. The high temperature resistant layer 12 is arranged on one side of the barrier and transmission layer 11. The high temperature resistant layer 12 has high high temperature resistance. At a higher temperature, the high temperature resistant layer 12 can still have good mechanical strength and mechanical properties. The high temperature resistant layer 12 can also improve the protection ability of the stack 100, so that the stack 100 can better protect the battery and photovoltaic modules. The high temperature resistant layer 12 has a high melting point and can withstand high temperature mutations in a short period of time. The high temperature resistant layer 12 has good resistance to high temperature deformation, so that the stack 100 is not easy to deform in a high temperature environment, and the high temperature resistance of the stack 100 is improved. The flame retardant layer 13 is arranged on the side of the high temperature resistant layer 12 away from the barrier and transmission layer 11. The flame retardant layer 13 has the function of flame retardancy and self-extinguishing. When combustion occurs, it can prevent the flame from spreading, and improve the fire retardant performance of the stack 100. The water vapor barrier layer 14 is arranged on the side of the flame retardant layer 13 away from the high temperature resistant layer 12. The water vapor barrier layer 14 has good barrier properties and still has strong water vapor barrier properties at high temperatures, which can improve the weather resistance of the laminate 100 and improve the service life of the laminate 100. The insulating layer 15 is arranged on the side of the water vapor barrier layer 14 away from the flame retardant layer 13. The insulating layer 15 has good electrical insulation performance and can improve the safety of the laminate 100. The insulating layer 15 is protected by the barrier layer 11, the flame retardant layer 13 and the water vapor barrier layer 14 on the outside, which has higher safety and longer service life. The laminate 100 in the embodiment of the present application can simultaneously have high temperature resistance, UV aging resistance and flame retardant fireproof properties by stacking different layers in a specific structure. As an optional embodiment, the barrier layer 11 is one of a colored acrylic resin layer or a colored fluorocarbon resin layer. The acrylic resin layer has good weather resistance and chemical stability, strong UV resistance, and is not easy to powder and fall off. The fluorocarbon resin layer has good corrosion resistance and strong adhesion.The colored acrylic resin layer and the colored fluorocarbon resin layer can effectively block ultraviolet light and transmit infrared light on the basis of ensuring that the acrylic resin layer and the fluorocarbon resin layer have good weather resistance and corrosion resistance, thereby improving the ultraviolet blocking performance and weather resistance of the laminate 100, enhancing the protection ability of the laminate 100, and extending the service life of the laminate 100. The cross-linking degree of the barrier layer 11 is greater than or equal to 90%, which can improve the weather resistance of the barrier layer 11 and extend the service life of the laminate 100.

[0024] As an optional embodiment, the melting point of the high temperature resistant layer 12 is greater than or equal to 300°C, which can enable the high temperature resistant layer 12 to maintain good mechanical properties at temperatures below 300°C, provide stable support for the laminate 100, and improve the shape stability of the laminate 100 at high temperatures. As an optional embodiment, the high temperature resistant layer 12 can be made of special engineering plastics. Preferably, the high temperature resistant layer 12 may include at least one of a polyetheretherketone layer (PEEK), a polysulfone layer (PSK), a polyimide layer (PI), a polyarylate layer (PAR) or a polyphenylene sulfide layer (PPS). Special engineering plastics have good high temperature resistance and mechanical properties. Among them, the polyetheretherketone layer has excellent wear resistance, heat resistance and chemical corrosion resistance, and has good flame retardancy, which can improve the high temperature resistance and fire retardant properties of the laminate 100. The polysulfone layer has excellent mechanical properties, high strength, high hardness, and good heat resistance and moisture resistance, which can improve the mechanical properties of the laminate 100. The polyimide layer and the polyarylate layer have high dimensional stability. The polyphenylene sulfide layer has excellent corrosion resistance. The above materials all have good high temperature resistance, and a suitable high temperature resistant layer 12 can be selected according to specific needs and use environment.

[0025] As an optional embodiment, the thickness of the high temperature resistant layer 12 is 10-50 μm. Increasing the thickness of the high temperature resistant layer 12 can improve the mechanical properties and high temperature deformation resistance of the high temperature resistant layer 12, but the increase in the thickness of the high temperature resistant layer 12 will also make the stack 100 thicker as a whole. When the thickness of the high temperature resistant layer 12 is 10-50 μm, the high temperature resistant layer 12 is relatively thin and has good mechanical properties and high temperature deformation resistance.

[0026] As an optional embodiment, the flame retardant layer 13 can be a flame retardant resin layer. Preferably, the flame retardant layer 13 includes at least one of a polyurethane flame retardant resin layer, an epoxy flame retardant resin layer, a silicone flame retardant resin layer or an acrylic flame retardant resin layer. These resin layers themselves have certain high temperature resistance and good self-extinguishing properties, which can effectively prevent the spread of fire and improve the fire retardant ability of the laminate 100. The flame retardant resin layer can be made of the corresponding resin plus a flame retardant commonly used in the art. The aforementioned resin also has good adhesion and can improve the structural stability of the laminate 100.

[0027] As an optional embodiment, the water vapor barrier layer 14 is an oxide layer. The oxide layer has a dense structure and still has a strong barrier function at a higher temperature. The water vapor barrier layer 14 can be at least one of an aluminum oxide layer, a titanium dioxide layer or a silicon dioxide layer. These oxide layers have a dense structure and excellent water vapor barrier performance. The water vapor barrier layer 14 can be formed by vapor deposition, magnetron sputtering or high temperature evaporation.

[0028] As an optional embodiment, the electrical insulation strength of the insulating layer 15 is greater than or equal to 6V / μm, and the melting point of the insulating layer 15 is greater than or equal to 150°C. The electrical insulation strength of the insulating layer 15 is greater than or equal to 6V / μm, and has good insulation performance. When encapsulating photovoltaic modules or batteries, it can prevent short circuits caused by contact between the battery cells in the battery or photovoltaic module and external metal. Preferably, the electrical insulation strength of the insulating layer 15 is greater than or equal to 10V / μm. The melting point of the insulating layer 15 is greater than or equal to 150°C, which can improve the high temperature resistance and safety of the stack 100.

[0029] As an optional embodiment, the insulating layer 15 may include at least one of a biaxially oriented polyester layer (BOPET), a biaxially oriented polypropylene layer (BOPP), a polyamide layer (PA) or a polycarbonate layer (PC). These resin layers have good insulation properties and a high melting point, and can improve the safety of the laminate 100.

[0030] As an optional embodiment, the thickness of the insulating layer 15 is 25-150 μm. As the thickness of the insulating layer 15 increases, the insulating performance of the insulating layer 15 is good, and it can provide better insulation capacity, and can prevent the battery from contacting the water vapor barrier layer 14, thereby improving the safety of the stack 100. The insulating layer 15 should not be too thick. An increase in the thickness of the insulating layer 15 will also increase the overall thickness of the stack 100, which does not meet the requirements of light and thin use. When the thickness of the insulating layer 15 is 25-150 μm, the insulating layer 15 is relatively thin and has good insulation performance.

[0031] As an optional implementation, Figure 2 As shown, the laminate 100 further includes an adhesive layer 16. The adhesive layer 16 is disposed on a side of the insulating layer 15 away from the water vapor barrier layer 14. The adhesive layer 16 can improve the viscosity of the laminate 100, so that the laminate 100 does not need to be glued on site when in use, thereby improving the convenience of the laminate 100.

[0032] As an optional embodiment, the bonding layer 16 may include at least one of a self-adhesive pressure-sensitive resin layer or a polyolefin layer having hot-melt bonding properties. These materials have good bonding properties and can be applied to a variety of interfaces. Preferably, the bonding layer 16 may include at least one of a polyurethane layer, an epoxy layer, a silicone layer, an acrylic layer or a polyolefin layer. The polyolefin layer may include at least one of an EVA layer, a POE layer or a TPU layer.

[0033] The embodiment of the present application provides a battery, which includes any of the above-mentioned laminated bodies 100. The laminated body 100 can be used as a battery shell, and can be used to replace the nylon layer in the battery shell (such as an aluminum-plastic film). The above-mentioned laminated body 100 has the properties of ultra-high temperature resistance, ultraviolet aging resistance, flame retardancy and fire resistance, has good reliability, and can improve the service life and safety of the battery.

[0034] The embodiment of the present application provides a photovoltaic module, which includes any of the above-mentioned laminates 100. The laminate 100 can be used as a back layer film or a back layer substrate in a photovoltaic module, and can also be used as an insulation strip, insulation tape or repair tape of a photovoltaic module. The above-mentioned laminate 100 has the properties of ultra-high temperature resistance, ultraviolet aging resistance, flame retardancy and fire resistance, has good reliability, and can improve the service life and safety of the photovoltaic module.

[0035] The present application is further described below in conjunction with embodiments, but the protection scope of the present application is not limited to the embodiments.

[0036] Example 1

[0037] like Figure 1 As shown, a laminate 100 includes a barrier layer 11, a high temperature resistant layer 12, a flame retardant layer 13, a water vapor barrier layer 14, an insulating layer 15 and an adhesive layer 16 in sequence.

[0038] Specifically, the thickness of the laminate 100 is 200 μm;

[0039] The blocking and transmission layer 11 is a colored acrylic resin layer, the light transmittance of the blocking and transmission layer 11 to the light in the 315-400nm band is 1%, the light transmittance of the blocking and transmission layer 11 to the light in the 750-1000nm band is 80%, and the crosslinking degree of the blocking and transmission layer 11 is 95%;

[0040] The high temperature resistant layer 12 is a polyetheretherketone layer, the melting point of the high temperature resistant layer 12 is 330° C., and the thickness of the high temperature resistant layer 12 is 30 μm;

[0041] The flame retardant layer 13 is a polyurethane flame retardant resin layer;

[0042] The water vapor barrier layer 14 is an aluminum oxide layer;

[0043] The insulating layer 15 is a biaxially stretched polyester layer. The electrical insulation strength of the insulating layer 15 is 100 kV / cm. The melting point of the insulating layer 15 is 255° C. and the thickness of the insulating layer 15 is 90 μm.

[0044] The adhesive layer 16 is a polyurethane layer.

[0045] Example 2

[0046] like Figure 1 As shown, a laminate 100 includes a barrier layer 11, a high temperature resistant layer 12, a flame retardant layer 13, a water vapor barrier layer 14, an insulating layer 15 and an adhesive layer 16 in sequence.

[0047] Specifically, the thickness of the laminate 100 is 180 μm;

[0048] The blocking and transmission layer 11 is a colored fluorocarbon resin layer, the light transmittance of the blocking and transmission layer 11 to the light in the 315-400nm band is 1.3%, the light transmittance of the blocking and transmission layer 11 to the light in the 750-1000nm band is 83%, and the crosslinking degree of the blocking layer is 92%;

[0049] The high temperature resistant layer 12 is a polysulfone layer, the melting point of the high temperature resistant layer 12 is 275°C, and the thickness of the high temperature layer is 30 μm;

[0050] The flame retardant layer 13 is an epoxy flame retardant resin layer;

[0051] The water vapor barrier layer 14 is a silicon dioxide layer;

[0052] The insulating layer 15 is a biaxially oriented polypropylene layer, the electrical insulation strength of the insulating layer 15 is 60 kV / cm, the melting point of the insulating layer 15 is 165° C., and the thickness of the insulating layer 15 is 90 μm.

[0053] The adhesive layer 16 is an EVA layer.

[0054] Example 3

[0055] Except for the following technical features, the rest is the same as Example 1.

[0056] The thickness of the high temperature resistant layer 12 is 10 μm.

[0057] Example 4

[0058] Except for the following technical features, the rest is the same as Example 1.

[0059] The thickness of the high temperature resistant layer 12 is 50 μm.

[0060] Example 5

[0061] Except for the following technical features, the rest is the same as Example 1.

[0062] The thickness of the high temperature resistant layer 12 is 60 μm.

[0063] Example 6

[0064] Except for the following technical features, the rest is the same as Example 1.

[0065] The thickness of the insulating layer 15 is 25 μm.

[0066] Example 7

[0067] Except for the following technical features, the rest is the same as Example 1.

[0068] The thickness of the insulating layer 15 is 150 μm.

[0069] Example 8

[0070] Except for the following technical features, the rest is the same as Example 1.

[0071] The thickness of the insulating layer 15 is 160 μm.

[0072] Example 9

[0073] Except for the following technical features, the rest is the same as Example 1.

[0074] The degree of crosslinking of the permeation barrier layer 11 is 90%.

[0075] Comparative Example 1

[0076] Except for the following technical features, the rest is the same as Example 1.

[0077] like Figure 3 As shown, the laminate 100 includes a barrier layer 11 , a water vapor barrier layer 14 , a high temperature resistant layer 12 , a flame retardant layer 13 , an insulating layer 15 and an adhesive layer 16 in sequence.

[0078] Comparative Example 2

[0079] like Figure 4 As shown, a laminate 100 includes a high temperature resistant layer 12, a flame retardant layer 13, a water vapor barrier layer 14, an insulating layer 15 and an adhesive layer 16 in sequence.

[0080] Specifically, the thickness of the laminate 100 is 200 μm;

[0081] The high temperature resistant layer 12 is a polyetheretherketone layer, the melting point of the high temperature resistant layer 12 is 335° C., and the thickness of the high temperature resistant layer 12 is 30 μm;

[0082] The flame retardant layer 13 is a polyurethane flame retardant resin layer;

[0083] The water vapor barrier layer 14 is an aluminum oxide layer;

[0084] The insulating layer 15 is a biaxially stretched polyester layer, the electrical insulation strength of the insulating layer 15 is 110 kV / cm, the melting point of the insulating layer 15 is 260° C., and the thickness of the insulating layer 15 is 90 μm.

[0085] The adhesive layer 16 is a polyurethane layer.

[0086] Comparative Example 3

[0087] like Figure 5 As shown, a laminate 100 includes a barrier layer 11, a flame retardant layer 13, a water vapor barrier layer 14, an insulating layer 15 and a bonding layer 16 in sequence.

[0088] Specifically, the thickness of the laminate 100 is 180 μm;

[0089] The blocking and transmission layer 11 is a colored acrylic resin layer, the light transmittance of the blocking and transmission layer 11 to the light in the 315-400nm band is 15%, the light transmittance of the blocking and transmission layer 11 to the light in the 750-1000nm band is 85%, and the crosslinking degree of the blocking and transmission layer 11 is 80%;

[0090] The flame retardant layer 13 is a polyurethane flame retardant resin layer;

[0091] The water vapor barrier layer 14 is an aluminum oxide layer;

[0092] The insulating layer 15 is a biaxially stretched polyester layer, the electrical insulation strength of the insulating layer 15 is 105 kV / cm, the melting point of the insulating layer 15 is 255° C., and the thickness of the insulating layer 15 is 90 μm.

[0093] The adhesive layer 16 is a polyurethane layer.

[0094] Comparative Example 4

[0095] like Figure 6 As shown, a laminate 100 includes a barrier layer 11, a high temperature resistant layer 12, a flame retardant layer 13, an insulating layer 15 and an adhesive layer 16 in sequence.

[0096] Specifically,

[0097] The thickness of the laminate 100 is 160 μm;

[0098] The blocking and transmission layer 11 is a colored acrylic resin layer, the light transmittance of the blocking and transmission layer 11 to the light in the 315-400nm band is 5%, the light transmittance of the blocking and transmission layer 11 to the light in the 750-1000nm band is 65%, and the crosslinking degree of the blocking and transmission layer 11 is 75%;

[0099] The high temperature resistant layer 12 is a polyetheretherketone layer, the melting point of the high temperature resistant layer 12 is 330° C., and the thickness of the high temperature resistant layer 12 is 30 μm;

[0100] The flame retardant layer 13 is a polyurethane flame retardant resin layer;

[0101] The insulating layer 15 is a biaxially stretched polyester layer. The electrical insulation strength of the insulating layer 15 is 200 Å, the melting point of the insulating layer 15 is 250° C., and the thickness of the insulating layer 15 is 90 μm.

[0102] The adhesive layer 16 is a polyurethane layer.

[0103] 1. Performance test:

[0104] The above embodiments and comparative examples were subjected to performance tests.

[0105] UV cut-off rate: The standard refers to the determination of light transmittance and haze of transparent plastics GB / T 2410-2008, the test range is 280-380nm, cut-off rate = 100% - light transmittance.

[0106] Relative Temperature Index (RTI): RTI is a specific temperature value at which the original value of the material's properties drops to half after 6,000-20,000 hours. The higher the RTI value, the higher the grade of the material. The standard refers to the UL746B standard to determine the relative temperature index (RTI) of the material.

[0107] Surface flammability test: Use a radiant panel flame spread tester, the standard is based on ASTM E 162.

[0108] Xenon lamp UV aging: Use xenon lamp UV aging tester, refer to GB / T16422.2 standard.

[0109] Water vapor barrier performance: Use water vapor transmission rate tester, standard refers to GB / T 1037.

[0110] Insulation performance: Tested using a breakdown voltage tester in accordance with ASTM D 149.

[0111] 2. Performance test results:

[0112] The performance test results of the above embodiments and comparative examples are shown in Table 1.

[0113] Table 1: Test results of embodiments and comparative examples

[0114]

[0115] As can be seen from the table, compared with implementations 1-9, Comparative Example 1 has a different stacking order, and the UV aging resistance and surface flammability of the laminate are both reduced. Compared with implementations 1-9, Comparative Example 2 has no barrier transmission layer, and the UV aging resistance of the laminate is poor, and the relative temperature index is low, and the water vapor permeability is reduced. Compared with implementations 1-9, Comparative Example 3 has no high temperature resistant layer, and the laminate cannot pass the surface flammability test. Compared with implementations 1-9, Comparative Example 4 has no water vapor barrier layer, the water vapor permeability of the laminate is too high, and the relative temperature index is reduced. In Examples 1-9, through the appropriate stacking order, the layers are matched and coordinated with each other, so that the laminate has high temperature resistance, UV aging resistance and flame retardant properties at the same time, and has good packaging performance and safety.

[0116] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A laminate, It is characterized in that include: A blocking and transmitting layer, wherein the transmittance of the blocking and transmitting layer to light in the wavelength band of 315-400 nm is less than or equal to 8%, and the transmittance of the blocking and transmitting layer to light in the wavelength band of 750-1000 nm is greater than or equal to 50%; A high temperature resistant layer, the high temperature resistant layer being arranged on one side of the barrier layer; A flame retardant layer, the flame retardant layer being arranged on a side of the high temperature resistant layer away from the barrier layer; A water vapor barrier layer, the water vapor barrier layer being arranged on a side of the flame retardant layer away from the high temperature resistant layer; The insulating layer is arranged on a side of the water vapor barrier layer away from the flame retardant layer.

2. The laminate according to claim 1, Features: The barrier layer is a colored acrylic resin layer or a colored fluorocarbon resin layer; The crosslinking degree of the barrier layer is greater than or equal to 90%.

3. The laminate according to claim 1, Features: The melting point of the high temperature resistant layer is greater than or equal to 300°C.

4. The laminate according to claim 1, Features: The high temperature resistant layer is one of a polyetheretherketone layer, a polysulfone layer, a polyimide layer, a polyarylate layer or a polyphenylene sulfide layer; The thickness of the high temperature resistant layer is 10-50 μm.

5. The laminate according to claim 1, Features: The flame retardant layer is one of a polyurethane flame retardant resin layer, an epoxy flame retardant resin layer, an organic silicon flame retardant resin layer or an acrylic flame retardant resin layer.

6. The laminate according to claim 1, Features: The water vapor barrier layer is an oxide layer.

7. The laminate according to claim 1, Features: The electrical insulation strength of the insulating layer is greater than or equal to 6V / μm, and the melting point of the insulating layer is greater than or equal to 150°C; The thickness of the insulating layer is 25-150 μm.

8. The laminate according to claim 1, Features: The laminate further comprises an adhesive layer, wherein the adhesive layer is disposed on a side of the insulating layer away from the water vapor barrier layer; The bonding layer is one of a polyurethane layer, an epoxy layer, a silicone layer, an acrylic layer or a polyolefin layer.

9. A battery, It is characterized in that include: The battery comprises the stacked body according to any one of claims 1 to 8.

10. A photovoltaic module, It is characterized in that include: The photovoltaic module comprises the laminate according to any one of claims 1 to 8.

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