Photovoltaic module and method of disassembly and recycling

Abstract

The application provides a photovoltaic module and a disassembly and recycling method, and relates to the technical field of photovoltaic recycling.The photovoltaic module comprises a cell piece, photovoltaic glass and a composite adhesive film layer.The photovoltaic glass is arranged opposite to the cell piece.The composite adhesive film layer is abutted between the photovoltaic glass and the cell piece.The composite adhesive film layer comprises two first adhesive film layers and a second adhesive film layer.The second adhesive film layer is abutted between the two first adhesive film layers.The melting point of the first adhesive film layer is less than the melting point of the second adhesive film layer.The cell piece and the photovoltaic glass cooperatively realize the conversion of light energy into electric energy.The first adhesive film layer is pyrolyzed while the second adhesive film layer remains unchanged, so that the two first adhesive film layers can separate and recycle the photovoltaic glass and the cell piece by means of thermal fusion, reducing the damage of the photovoltaic glass and the cell piece in the recycling and peeling process, ensuring the completeness of the cell piece and the photovoltaic glass, and improving the recycling effect.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic recycling technology, and more specifically, to a photovoltaic module and a dismantling and recycling method. Background Technology

[0002] The dismantling of photovoltaic modules, including but not limited to battery components and photovoltaic glass, aims to achieve resource classification and recycling, thereby improving resource utilization efficiency. Currently, during the high-temperature dismantling and recycling process of photovoltaic modules, the encapsulant film may carbonize and adhere during high-temperature heating, potentially causing damage to the photovoltaic glass or battery silicon wafers during separation, thus affecting the recycling effect. Summary of the Invention

[0003] The purpose of this invention is to provide a photovoltaic module and a dismantling and recycling method, which enables the photovoltaic glass and battery components to be separated and recycled by thermal melting of the two first adhesive film layers, thereby reducing the damage to the photovoltaic glass and battery components during the recycling process and improving the recycling effect.

[0004] A first aspect of the present invention provides a photovoltaic module comprising:

[0005] Battery components;

[0006] Photovoltaic glass, wherein the photovoltaic glass is disposed opposite to the battery component;

[0007] A composite adhesive film layer is abutted between the photovoltaic glass and the battery component. The composite adhesive film layer includes two first adhesive film layers and a second adhesive film layer, with the second adhesive film layer abutting between the two first adhesive film layers. The melting point of the first adhesive film layer is lower than that of the second adhesive film layer.

[0008] In one possible embodiment of the present invention, the thickness of any of the first adhesive film layers is D1 and the thickness of the second adhesive film layer is D2, satisfying: 3D1≤D2≤6D1.

[0009] In one possible embodiment of the present invention, the thickness of the first adhesive film layer on the side closer to the battery component is D3, and the thickness of the first adhesive film layer on the side closer to the photovoltaic glass is D4, satisfying: D4<D3≤3D4.

[0010] In one possible embodiment of the present invention, the photovoltaic glass includes a first photovoltaic glass and a second photovoltaic glass, wherein the first photovoltaic glass is disposed opposite to the battery device, and the second photovoltaic glass is disposed opposite to the battery device, such that the battery device is located between the first photovoltaic glass and the second photovoltaic glass.

[0011] In one possible embodiment of the present invention, there are two composite adhesive film layers, one of which abuts between the first photovoltaic glass and the battery, and the other of which abuts between the second photovoltaic glass and the battery.

[0012] In one possible embodiment of the present invention, the first adhesive film layer is a thermoplastic adhesive film.

[0013] A second aspect of the present invention provides a dismantling and recycling method, which applies the photovoltaic module described in any of the above embodiments, and the steps of the dismantling and recycling method include:

[0014] S100: Transport the photovoltaic module to the workbench and obtain the real-time position and preset area of ​​the photovoltaic module;

[0015] S200: Determine whether the real-time location is within the preset area;

[0016] S300: If so, the photovoltaic module is heated to a first preset temperature, so that the first adhesive layer of the composite adhesive layer is in a molten state. The first preset temperature is Q1, and Q1 satisfies: 140℃≤Q1≤250℃, so that the photovoltaic glass and the battery in the photovoltaic module are separated through the first adhesive layer.

[0017] S400: If not, adjust the real-time position of the photovoltaic module until the photovoltaic module is located within the preset area.

[0018] In one possible embodiment of the present invention, the photovoltaic module is heated to a second preset temperature, the second preset temperature being Q2, and Q2 satisfies: 170℃≤Q2≤210℃.

[0019] In one possible embodiment of the present invention, after the photovoltaic glass and the battery are separated, the first preset temperature of the photovoltaic module is gradually changed to a second preset temperature at a preset rate of 3°C / min.

[0020] In one possible embodiment of the present invention, during the process of the first preset temperature gradually changing to the second preset temperature, an inert gas is introduced to place the photovoltaic module in an inert environment.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The photovoltaic module and dismantling and recycling method provided by the present invention ensure that the photovoltaic glass of the photovoltaic module ensures that light energy is incident on the surface of the battery component with relatively high efficiency, so that the battery component and the photovoltaic glass work together to achieve the conversion of light energy into electrical energy. The composite adhesive film layer is used to encapsulate and fix the photovoltaic glass and the battery component. The composite adhesive film layer is provided with two first adhesive film layers and a second adhesive film layer, with the second adhesive film layer located between the two first adhesive film layers. The melting point of the first adhesive film layer is lower than that of the second adhesive film layer. When the first adhesive film layer undergoes pyrolysis, the second adhesive film layer remains unchanged. Thus, the two first adhesive film layers can be separated and recycled by thermal melting, reducing the damage to the photovoltaic glass and the battery component during the recycling and peeling process, ensuring the integrity of the battery component and the photovoltaic glass, and thus improving the recycling effect. The dismantling and recycling method moves and transports the photovoltaic module to the workbench. When the real-time position of the photovoltaic module is within the preset area, the composite adhesive film layer is heated to a first preset temperature. At the first preset temperature, the first adhesive film layer is in a molten state. Since the first adhesive film layer is bonded to the photovoltaic glass and the battery, the purpose of dismantling and separating the photovoltaic glass and the battery is achieved. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 These are schematic diagrams of the structure of a photovoltaic module provided in some embodiments of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the composite encapsulant layer of a photovoltaic module provided in some embodiments of the present invention;

[0025] Figure 3 This is a flowchart illustrating the dismantling and recycling method provided in some embodiments of the present invention.

[0026] Explanation of key component symbols;

[0027] 100 - Photovoltaic module; 110 - Battery; 120 - First photovoltaic glass; 130 - Second photovoltaic glass; 140 - Composite encapsulant layer; 141 - First encapsulant layer; 142 - Second encapsulant layer; X - First direction; Y - Second direction. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] refer to Figure 1 As shown, an embodiment of this application provides a photovoltaic module 100, which includes a battery 110, photovoltaic glass, and a composite encapsulant layer 140.

[0036] Specifically, in combination Figure 1 and Figure 2 As shown, the photovoltaic glass and the battery component 110 are disposed opposite to each other. The composite adhesive film layer 140 abuts between the photovoltaic glass and the battery component 110. The composite adhesive film layer 140 includes two first adhesive film layers 141 and a second adhesive film layer 142. The second adhesive film layer 142 abuts between the two first adhesive film layers 141. The melting point of the first adhesive film layer 141 is lower than that of the second adhesive film layer 142. Accordingly, the photovoltaic glass ensures that light energy is incident on the surface of the battery component 110 with relatively high efficiency, so that the battery component 110 and the photovoltaic glass work together to achieve the conversion of light energy into electrical energy. The composite adhesive film layer 140 is used to encapsulate and fix the photovoltaic glass and the battery component 110. The adhesive film layer 140 is provided with two first adhesive film layers 141 and a second adhesive film layer 142. The second adhesive film layer 142 is located between the two first adhesive film layers 141. The melting point of the first adhesive film layer 141 is lower than that of the second adhesive film layer 142. When the first adhesive film layer 141 undergoes pyrolysis, the second adhesive film layer 142 remains unchanged. This allows the two first adhesive film layers 141 to be separated and recycled by thermal melting, reducing the possibility of damage to the photovoltaic glass and the battery component 110 during the recycling process, ensuring the integrity of the battery component 110 and the photovoltaic glass, and thus improving the recycling effect.

[0037] like Figure 1 and Figure 2 As shown, the photovoltaic module 100 has a first direction X and a second direction Y, wherein the first direction X and the second direction Y are perpendicular to each other. For example, the first direction X is taken as the thickness direction of the photovoltaic module 100, and the second direction Y is taken as the length direction of the photovoltaic module 100. The battery component 110, photovoltaic glass, and composite encapsulant layer 140 are stacked along the first direction X. It is understood that the above definitions are only for ease of understanding the relative positional relationships of the various parts in the photovoltaic module 100 and should not be construed as limiting this application.

[0038] It is understood that the composite film layer 140 is used to protect the battery component 110 and encapsulate the photovoltaic module 100 to facilitate the output of electrical energy. The composite film layer 140 has good weather resistance and stability, blocks water vapor, and maintains the light transmittance and light reflectance inside the photovoltaic module 100, thereby improving the photoelectric conversion efficiency of the photovoltaic module 100.

[0039] The inventors of this application discovered in their research that, since the first adhesive layer 141 and the second adhesive layer 142 have different melting points, and the melting point of the first adhesive layer 141 is lower than that of the second adhesive layer 142, it is necessary to heat the first adhesive layer 141 to reach its melting point so that the second adhesive layer 142 and the battery component 110 or the second adhesive layer 142 and the photovoltaic glass can be peeled and recycled through the first adhesive layer 141 to obtain a more complete photovoltaic glass and battery component 110.

[0040] In one embodiment, optionally, the thickness of any one of the first adhesive film layers 141 is D1, and the thickness of the second adhesive film layer 142 is D2, satisfying: 3D1≤D2≤6D1. On the one hand, the thickness D2 of the second adhesive film layer 142 is greater than or equal to three times the thickness D1 of the first adhesive film layer 141, so that the second adhesive film layer 142 has sufficient thickness to have mechanical strength. When the first adhesive film layer 141 is in a molten state, it is convenient to peel off the photovoltaic glass or battery component 110 through the second adhesive film layer 142, reducing the situation where the two first adhesive film layers 141 are too close together and thus the recycling and dismantling effect of the photovoltaic glass and battery component 110 is improved. On the other hand, the thickness D2 of the second adhesive film layer 142 is less than or equal to six times the thickness D1 of the first adhesive film layer 141. If the thickness D2 of the second adhesive film layer 142 is too large, it will cause high optical loss, reduce the photoelectric conversion efficiency of the photovoltaic module 100, and affect and hinder the lamination and encapsulation process of the photovoltaic module 100. For example, the thickness D1 of the first adhesive film layer 141 is any value between 30um and 60um, and the thickness D1 of the first adhesive film layer 141 can be 30um, 40um, 45um, 50um, 60um, etc. The thickness D2 of the second adhesive film layer 142 is any value between 250um and 350um, and the thickness D2 of the second adhesive film layer 142 can be 250um, 265um, 280um, 300um, 350um, etc.

[0041] Optionally, the thickness of the first adhesive layer 141 on the side closer to the battery component 110 is D3, and the thickness of the first adhesive layer 141 on the side closer to the photovoltaic glass is D4, satisfying: D4 < D3 ≤ 3D4. In other words, the two first adhesive layers 141 are respectively disposed on opposite sides of the second adhesive layer 142. The thickness D3 of the first adhesive layer 141 on the side closer to the battery component 110 is greater than the thickness D4 of the first adhesive layer 141 on the side closer to the photovoltaic glass. Since the battery component 110 is not a smooth plane, the thickness of the first adhesive layer 141 on the side closer to the battery component 110 is greater than the thickness D4 of the first adhesive layer 141 on the side closer to the photovoltaic glass. The thickness D3 of the first adhesive layer 141 on the side near the battery component 110 is relatively large to facilitate better encapsulation of the first adhesive layer 141 and reduce gaps at the connection point between the battery component 110 and the first adhesive layer 141. Furthermore, the thickness D3 of the first adhesive layer 141 on the side near the battery component 110 is less than or equal to three times the thickness D4 of the first adhesive layer 141 on the side near the photovoltaic glass. This ensures the light transmittance of the first adhesive layer 141 while avoiding excessively large manufacturing costs associated with an excessively large thickness D3 on the side near the battery component 110. For example, the thickness D3 of the first adhesive layer 141 on the side near the battery component 110 is 35 μm, and the thickness D4 of the first adhesive layer 141 on the side near the photovoltaic glass is 100 μm.

[0042] In one embodiment, optionally, the photovoltaic glass includes a first photovoltaic glass 120 and a second photovoltaic glass 130, wherein the first photovoltaic glass 120 is disposed opposite to the battery component 110, and the second photovoltaic glass 130 is disposed opposite to the battery component 110, such that the battery component 110 is located between the first photovoltaic glass 120 and the second photovoltaic glass 130. Accordingly, the first photovoltaic glass 120 and the second photovoltaic glass 130 are respectively located on opposite sides of the battery component 110. The first photovoltaic glass 120 and the second photovoltaic glass 130 are used to replace the traditional photovoltaic backsheet, thereby enabling the photovoltaic module 100 to form a double-glass structure.

[0043] Optionally, there are two composite film layers 140. One composite film layer 140 abuts between the first photovoltaic glass 120 and the battery component 110, and the other composite film layer 140 abuts between the second photovoltaic glass 130 and the battery component 110. The composite film layer 140 is used to encapsulate and fix the first photovoltaic glass 120 and the battery component 110, or the composite film layer 140 is used to encapsulate the second photovoltaic glass 130 and the battery component 110. The composite film layer 140 is used to encapsulate the first photovoltaic glass 120, the second photovoltaic glass 130 and the battery component 110, so that the battery component 110, the first photovoltaic glass 120 and the second photovoltaic glass 130 work together to convert light energy into electrical energy.

[0044] Optionally, the first adhesive film layer 141 is a thermoplastic adhesive film. Thermoplastic adhesive films have a linear molecular chain chemical structure, a reversible molten state, strong PID resistance, and excellent weather resistance. For example, thermoplastic adhesive films can be made of PVB, POE, or TPU materials. Additionally, the second adhesive film layer 142 adopts a composite adhesive film structure or a thermosetting adhesive film. Thermosetting adhesive films can be made of EVA material, giving the second adhesive film layer 142 cross-linking and curing properties, making it difficult to melt and decompose.

[0045] In summary, the first photovoltaic glass 120 and the second photovoltaic glass 130 of the photovoltaic module 100 ensure that light energy is incident on the surface of the battery component 110 with relatively high efficiency, so that the battery component 110, the first photovoltaic glass 120 and the second photovoltaic glass 130 work together to achieve the conversion of light energy into electrical energy. The composite adhesive film layer 140 is used to encapsulate and fix the first photovoltaic glass 120 and the battery component 110 or the second photovoltaic glass 130 and the battery component 110. The composite adhesive film layer 140 is provided with a first thermoplastic film, a thermosetting adhesive film and a second thermoplastic film. The thermosetting adhesive film is located between the first thermoplastic film and the second thermoplastic film, so that the first thermoplastic film and the second thermoplastic film can be separated and recycled by hot melt separation, reducing the possibility of damage to the photovoltaic glass and the battery component 110 during the recycling and peeling process, ensuring the integrity of the battery component 110 and the photovoltaic glass, and thus improving the recycling effect.

[0046] refer to Figure 3 As shown, an embodiment of this application provides a dismantling and recycling method, which applies the photovoltaic module 100 described in any of the above embodiments. The steps of the dismantling and recycling method include:

[0047] S100: The photovoltaic module 100 is transported to the workbench, the real-time position and preset area of ​​the photovoltaic module 100 are obtained, and the photovoltaic module 100 is moved and transported to the workbench. The preset area is used to heat and disassemble the photovoltaic module 100. The preset area of ​​the photovoltaic module 100 can form a semi-enclosed space to reduce heat loss.

[0048] For example, before the photovoltaic module 100 is transported to the workbench, the frame components and junction box in the photovoltaic module 100 are disassembled. A visual positioning system (such as a CCD camera + image processing algorithm) or a combination of laser sensors is used to establish a coordinate system transformation model to achieve matching between the visual system and the coordinate system of the robotic arm, and positioning is achieved in conjunction with the end effector of the robotic arm.

[0049] Furthermore, the range of the preset area is larger than the range of the heating station of the workbench. The heating station can be a tunnel furnace heating or an oil bath heating. The heating station is used to heat the photovoltaic module 100. The edge length of the preset area is D, and the edge length of the heating station of the workbench is d, satisfying: 0 < Dd ≤ 3mm, so that the range of the preset area is larger than the range of the heating station of the workbench in order to leave a certain safety margin.

[0050] S200: Determine whether the real-time position is within the preset area. Detect the real-time position of the photovoltaic module 100 using a detection sensor. If the real-time position of the photovoltaic module 100 is within the preset area, it will facilitate the processing and disassembly of the photovoltaic module 100. Use a fuzzy control algorithm to process whether the real-time position is within the preset area or not.

[0051] S300: If so, the photovoltaic module 100 is heated to a first preset temperature, so that the first adhesive layer 141 of the composite adhesive layer 140 is in a molten state. The first preset temperature is Q1, which satisfies: 140℃≤Q1≤250℃. This allows the photovoltaic glass and the battery component 110 in the photovoltaic module 100 to be separated through the first adhesive layer 141. The photovoltaic module 100 is heated to a temperature Q1 greater than or equal to 140℃, or the first preset temperature Q1 of the photovoltaic module 100 is less than or equal to 250℃, so that the first adhesive layer 141 is in a molten state. Since the first adhesive layer 141 bonds the photovoltaic glass and the battery component 110 respectively, it facilitates the disassembly and separation of the photovoltaic glass and the battery component 110.

[0052] S400: If not, adjust the real-time position of the photovoltaic module 100 until the photovoltaic module 100 is located within the preset area. Adjust the real-time position of the photovoltaic module 100 through the end effector of the robotic arm. When the end effector of the robotic arm clamps and moves the photovoltaic module 100, ensure the force feedback adjustment of the end effector of the robotic arm to reduce the situation where excessive clamping force causes damage to the photovoltaic module 100.

[0053] In one embodiment, optionally, the photovoltaic module 100 is heated to a second preset temperature, Q2, where Q2 satisfies: 170℃≤Q2≤210℃. Within the range of the second preset temperature, the first adhesive film layer 141 is in a molten state, which facilitates better disassembly and separation of the photovoltaic glass and battery components 110 of the photovoltaic module 100. Correspondingly, the first adhesive film layer 141 has better fluidity within the range of the second preset temperature. In this state, the melt index of the first adhesive film layer 141 is greater than or equal to 7g / 10min, preventing the photovoltaic glass and battery components 110 from sticking together. This ensures that the photovoltaic glass and battery components 110 are not damaged after disassembly and separation, and the disassembly integrity rate of the photovoltaic glass and battery components 110 is greater than or equal to 99%, reducing the residue of the first adhesive film layer 141 on the photovoltaic glass and battery components 110, and maintaining high disassembly and separation efficiency and disassembly integrity.

[0054] In addition, as a comparative embodiment, when the second preset temperature Q2 is in the range of 140℃≤Q2≤170℃, the fluidity of the first film layer 141 is poor. Under this state, the melt index of the first film layer 141 is greater than or equal to 1g / 10min and less than or equal to 7g / 10min. When the photovoltaic glass and the battery component 110 are disassembled, the disassembly integrity rate of the single-glass structure photovoltaic glass is about 50% to 70%, and the disassembly integrity rate of the double-glass structure photovoltaic glass is about 40% to 60%. There is a lot of residue of the first film layer 141 in the photovoltaic glass and the battery component 110. When the second preset temperature Q2 is greater than 170°C, the energy consumption for heating on the workbench is high. For example, the energy consumption of the tunnel heating furnace is 1000 kWh when the second preset temperature Q2 is 180°C, 1800 kWh when the second preset temperature Q2 is 220°C, and 2500 kWh when the second preset temperature Q2 is 260°C. At this time, the photovoltaic glass is at greater risk of breakage, and the integrity rate of photovoltaic glass disassembly is less than 50%, which may cause damage to the battery component 110.

[0055] In one embodiment, optionally, after the photovoltaic glass and the battery component 110 are separated, the first preset temperature of the photovoltaic module 100 is gradually changed to a second preset temperature at a preset rate of 3°C / min. This allows the heating temperature of the photovoltaic module 100 to change gradually, preventing the photovoltaic glass from cracking or breaking due to rapid temperature changes. The preset rate of 3°C / min reduces energy consumption and VOC emissions, and the processing time is optimized to improve efficiency. Maintaining the heating temperature of the photovoltaic module 100 within the range of the second preset temperature further improves the completeness of the disassembly of the photovoltaic glass and the battery component 110.

[0056] Optionally, during the process of the first preset temperature gradually changing to the second preset temperature, an inert gas is introduced to keep the photovoltaic module 100 in an inert environment, preventing external air from entering and preventing localized sudden cooling in the preset area from causing the photovoltaic glass to crack, thereby improving the dismantling and recycling effect.

[0057] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0058] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A photovoltaic module, characterized in that, include: Battery components; Photovoltaic glass, wherein the photovoltaic glass is disposed opposite to the battery component; A composite adhesive film layer is abutted between the photovoltaic glass and the battery component. The composite adhesive film layer includes two first adhesive film layers and a second adhesive film layer, with the second adhesive film layer abutting between the two first adhesive film layers. The melting point of the first adhesive film layer is lower than that of the second adhesive film layer.

2. The photovoltaic module according to claim 1, characterized in that, The thickness of any of the first adhesive film layers is D1, and the thickness of the second adhesive film layer is D2, satisfying: 3D1≤D2≤6D1.

3. The photovoltaic module according to claim 1, characterized in that, The thickness of the first adhesive film layer on the side closer to the battery component is D3, and the thickness of the first adhesive film layer on the side closer to the photovoltaic glass is D4, satisfying: D4<D3≤3D4.

4. The photovoltaic module according to claim 1, characterized in that, The photovoltaic glass includes a first photovoltaic glass and a second photovoltaic glass. The first photovoltaic glass is disposed opposite to the battery component, and the second photovoltaic glass is disposed opposite to the battery component, such that the battery component is located between the first photovoltaic glass and the second photovoltaic glass.

5. The photovoltaic module according to claim 4, characterized in that, The composite adhesive film layer is in the form of two layers: one composite adhesive film layer abuts between the first photovoltaic glass and the battery device, and the other composite adhesive film layer abuts between the second photovoltaic glass and the battery device.

6. The photovoltaic module according to any one of claims 1 to 5, characterized in that, The first adhesive film layer is a thermoplastic adhesive film.

7. A dismantling and recycling method, wherein the dismantling and recycling method applies the photovoltaic module described in any one of claims 1 to 6, characterized in that, The dismantling and recycling method includes the following steps: The photovoltaic module is transported to the workbench, and the real-time position and preset area of ​​the photovoltaic module are obtained. The preset area is located on the workbench. Determine whether the real-time location is within the preset area; If so, the photovoltaic module is heated to a first preset temperature, so that the first adhesive layer of the composite adhesive layer is in a molten state. The first preset temperature is Q1, and Q1 satisfies: 140℃≤Q1≤250℃, so that the photovoltaic glass and the battery in the photovoltaic module are separated through the first adhesive layer. If not, adjust the real-time position of the photovoltaic module until the photovoltaic module is located within the preset area.

8. The dismantling and recycling method according to claim 7, characterized in that, The photovoltaic module is heated to a second preset temperature, Q2, which satisfies the following condition: 170℃≤Q2≤210℃.

9. The dismantling and recycling method according to claim 8, characterized in that, After the photovoltaic glass and the battery are separated, the first preset temperature of the photovoltaic module is gradually changed to the second preset temperature at a preset rate of 3°C / min.

10. The dismantling and recycling method according to claim 9, characterized in that, During the process of gradually changing from the first preset temperature to the second preset temperature, an inert gas is introduced to keep the photovoltaic module in an inert environment.

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