Ex-service photovoltaic module EVA heating device and method based on intelligent far infrared
By employing precise temperature control and uniform heating technology through an intelligent far-infrared heating device, the problems of high energy consumption, slow heating speed, and uneven temperature in the dismantling of retired photovoltaic modules have been solved, achieving efficient and energy-saving EVA film removal. This technology is suitable for heating and delamination of multilayer composite materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-13
- Publication Date
- 2026-03-10
AI Technical Summary
Existing hot air or resistance heating equipment has problems such as high energy consumption, slow heating speed and uneven temperature distribution in the dismantling of retired photovoltaic modules, making it difficult to meet the requirements of efficient and low-carbon disposal.
The device employs an intelligent far-infrared heating system, which achieves precise temperature control and uniform heating through an intelligent far-infrared heating cluster and a photoelectric sensor array. The power of the main far-infrared heating rod is dynamically controlled by utilizing the rectangular array layout of the far-infrared heating unit and the position detection component of the auxiliary signal infrared heating rod.
It achieves a 2-3 times increase in heating efficiency, a 40%-60% reduction in energy consumption, and significantly improves the uniformity and controllability of the heating process, avoiding the risk of local overheating, adapting to photovoltaic modules of different sizes, and supporting large-scale continuous processing.
Smart Images
Figure CN121624205A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of photovoltaic module recycling and resource utilization technology, specifically to a heating device and method for retired photovoltaic modules based on intelligent far-infrared technology and EVA. Background Technology
[0002] As the photovoltaic industry continues to expand, a large number of early-stage photovoltaic modules have gradually entered the retirement stage. The efficient dismantling and resource utilization of retired photovoltaic modules has become a common concern in the industry and environmental protection fields.
[0003] A photovoltaic module typically consists of a glass layer, EVA film, solar cells, a backsheet, an aluminum frame, and a junction box. The removal processes for the aluminum frame and junction box are relatively mature and can be completed quickly, either manually or mechanically. However, the EVA film, located in the interlayer, undergoes cross-linking and curing during production, forming a strong bond with the glass and solar cells. These characteristics ensure the module's weather resistance and lifespan, but also make EVA separation during dismantling extremely difficult, becoming a major technical bottleneck restricting the resource recycling of retired modules.
[0004] Currently, the main treatments for EVA films include mechanical methods, solvent methods, and thermal treatment methods. Among them, mechanical methods are suitable for initial crushing, but the degree of peeling is limited and film residue is easily left behind; solvent methods have better separation effects, but require a large amount of organic reagents, leading to environmental pollution and high costs; thermal treatment methods have greater industrialization potential due to their mature technology and high resource recovery rate.
[0005] However, traditional hot air or resistance heating equipment often suffers from drawbacks such as high energy consumption, slow heating speed, and uneven temperature distribution, making it difficult to meet the needs of efficient and low-carbon disposal of retired photovoltaic modules.
[0006] Therefore, developing a new type of heating device that can achieve precise temperature control, uniform heating, and energy efficiency has become a key direction for solving the problem of dismantling retired photovoltaic modules. Summary of the Invention
[0007] The purpose of this invention is to provide a heating device and method for EVA of decommissioned photovoltaic modules based on intelligent far-infrared technology, so as to overcome the problems existing in the prior art. This invention can achieve precise temperature control, uniform heating, and energy saving and high efficiency.
[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a heating device for EVA of decommissioned photovoltaic modules based on intelligent far-infrared technology, comprising: The intelligent far-infrared heating cluster includes several far-infrared heating units. Each far-infrared heating unit includes a far-infrared heating unit body, an auxiliary signal infrared heating rod and several main far-infrared heating rods disposed on the far-infrared heating unit body. The auxiliary signal infrared heating rod is located in the middle of the far-infrared heating unit body, and the several main far-infrared heating rods are located on both sides of the auxiliary signal infrared heating rod. A waste photovoltaic roller conveyor is installed at the bottom of the intelligent far-infrared heating cluster to transport retired photovoltaic EVA modules to be processed; An intelligent far-infrared detection device is installed at the bottom of the waste photovoltaic roller conveyor to detect the blocking status of the signal light emitted by the auxiliary signal infrared heating rod. The intelligent far-infrared detection device is communicatively connected to the auxiliary signal infrared heating rod and several main far-infrared heating rods, and controls the power of the corresponding main far-infrared heating rod based on the blocking state of the signal light detected by the intelligent far-infrared detection device.
[0009] In some embodiments, the intelligent far-infrared heating cluster consists of M×N far-infrared heating units, forming a rectangular heating area; where M represents the number of rows in the rectangular heating area, N represents the number of columns in the rectangular heating area, and both M and N are positive integers.
[0010] In some embodiments, the heating temperature of the far-infrared heating unit is 20 °C to 800 °C.
[0011] In some embodiments, the waste photovoltaic roller conveyor includes two rollers and several metal strips tensioned between the rollers.
[0012] In some embodiments, the roller is driven by a variable frequency motor, and the transmission speed of the retired photovoltaic module EVA is 0.25 m / s to 1 m / s.
[0013] In some embodiments, the vertical distance between the intelligent far-infrared heating cluster and the waste photovoltaic roller conveyor is 0.2 m to 0.5 m; The vertical distance between the waste photovoltaic roller conveyor and the intelligent far-infrared detection device is 0.2 m to 0.3 m.
[0014] In some embodiments, the intelligent far-infrared detection device is a photoelectric sensor array.
[0015] Secondly, the present invention provides a method for heating EVA in decommissioned photovoltaic modules based on intelligent far-infrared technology, comprising the following steps: The auxiliary signal infrared heating rod is activated, and the auxiliary signal infrared heating rod emits signal light; The waste photovoltaic roller conveyor and the intelligent far-infrared detection device are activated, and the retired photovoltaic module EVA is transferred through the waste photovoltaic roller conveyor. During the transmission of decommissioned photovoltaic module EVA, the intelligent far-infrared detection device detects the shading status of the signal light, and the decommissioned photovoltaic module EVA is heated by the main far-infrared heating rod of the far-infrared heating unit according to the detected shading status of the signal light.
[0016] In some embodiments, the signal light blocking state refers to whether the signal light emitted by the auxiliary signal infrared heating rod of the far-infrared heating unit directly above the retired photovoltaic module EVA is blocked by the retired photovoltaic module EVA.
[0017] In some embodiments, heating the decommissioned photovoltaic module EVA by the main far-infrared heating rod of the far-infrared heating unit according to the detected signal light occlusion state specifically includes: When the signal light is blocked by the decommissioned photovoltaic module EVA, the intelligent far-infrared detection device controls the far-infrared heating unit to start the main far-infrared heating rod to heat the decommissioned photovoltaic module EVA. When the signal light is not blocked by the retired photovoltaic module EVA, the intelligent far-infrared detection device continues to detect the blocking status of the signal light.
[0018] The above technical solution has the following advantages or beneficial effects: Firstly, this invention provides a heating device for EVA of decommissioned photovoltaic modules based on intelligent far-infrared technology. By integrating intelligent detection and regional power control, it achieves precise and efficient heating. Its core beneficial effects are as follows: First, it possesses excellent energy-saving characteristics. By heating the far-infrared heating units only in the EVA-covered area of the decommissioned photovoltaic module at full power, while maintaining low-power standby in areas without modules, energy consumption can be significantly reduced by 40%-60% compared to traditional overall heating methods. Second, it achieves extremely high heating efficiency and uniformity. Far-infrared radiation energy directly penetrates the glass and is efficiently absorbed by EVA molecules, achieving simultaneous heating inside and outside, increasing the heating rate by 2-3 times, and avoiding the problems of surface overheating and insufficient internal temperature. Finally, the entire process is intelligently automated. The intelligent far-infrared detection device detects the module position in real time and dynamically controls the far-infrared heating units of the corresponding intelligent far-infrared heating cluster. The response is rapid, avoiding human intervention and the risk of local overheating, ensuring stable and consistent processing quality, and providing key technical support for the green and efficient recycling of decommissioned photovoltaic modules. In some embodiments, by designing the intelligent far-infrared heating cluster as a rectangular array composed of M×N heating units, a high degree of modularity and scalability of the heating area is achieved. This layout can precisely match retired photovoltaic modules of different sizes and specifications, ensuring no dead angles in heating coverage and greatly improving the versatility and adaptability of the equipment. The rectangular array, combined with an intelligent detection system, enables precise regional dynamic power control. The heating rod of the corresponding unit is activated only when the module moves to a certain area, effectively avoiding energy waste. At the same time, this structure is conducive to the uniform distribution of the heat field, ensuring uniform heating of the EVA film, improving the quality and efficiency of the peeling or pyrolysis process, and providing the optimal heating effect for large-scale, continuous processing.
[0019] In some embodiments, by setting the operating temperature range of the far-infrared heating unit to 20 °C to 800 °C, it has a wide range of process adaptability. This range can not only meet the low temperature requirements of physical stripping of EVA at 100 °C to 150 °C, but also cover the high temperature requirements of pyrolysis to completely remove EVA at 450 °C to 800 °C, thereby realizing multiple uses of one machine and significantly improving the processing capacity and economy of the device.
[0020] In some embodiments, a transmission device consisting of two rollers and several metal strips is used, which is structurally stable and efficient. The metal strips provide a solid support surface, ensuring that large-area photovoltaic modules pass smoothly through the heating zone and avoiding damage caused by bending. At the same time, the strip structure reduces the contact area with the module backsheet, which reduces heat loss and allows far-infrared rays to penetrate through the gaps to achieve auxiliary heating of the back of the module, thereby improving the overall thermal efficiency and heating uniformity.
[0021] In some embodiments, by setting the transmission speed to be adjustable from 0.25 m / s to 1 m / s, and combining it with an adjustable spacing of 0.2 m to 0.5 m between the heating cluster and the transmission device, and 0.2 m to 0.3 m between the transmission device and the detection device, precise synergistic optimization of process parameters is achieved. The matching of speed and spacing ensures that the photovoltaic module obtains a precise residence time in the heating zone, enabling the EVA film to reach the target temperature fully and uniformly, while avoiding the hidden dangers of insufficient or overheating, and significantly improving the controllability of processing efficiency and process quality.
[0022] In some embodiments, by employing a photoelectric sensor array as a detection device, high-speed, accurate, and non-contact identification of the position of photovoltaic modules is achieved. This array can detect the shading status of the auxiliary signal light of all heating units in parallel, responding quickly and ensuring the real-time and accuracy of the start-stop control of the heating units. This provides a reliable technical foundation for realizing on-demand, energy-efficient, and regionalized dynamic heating.
[0023] Secondly, this invention provides a method for heating EVA in decommissioned photovoltaic modules based on intelligent far-infrared technology. Firstly, it achieves precise, regionalized dynamic energy delivery. The main heating rod of the corresponding upper heating unit is only triggered when the photoelectric sensor array detects that the module is blocking the signal light. After the module leaves, it switches to a low-power standby mode, fundamentally avoiding unnecessary energy loss and achieving significant energy savings, expected to reach 40%-60%. Secondly, this method ensures the uniformity and controllability of the heating process. Far-infrared radiation directly acts on the EVA layer and utilizes its molecular resonance absorption characteristics to achieve synchronous and rapid heating inside and outside, effectively avoiding problems such as surface overheating or insufficient internal temperature caused by traditional heating methods, improving heating efficiency by 2-3 times. Finally, the entire process is fully automated. Through a closed-loop control of "detection-judgment-execution," no manual intervention is required. It responds quickly and effectively prevents local overheating, ensuring high consistency and stability in the processing quality of different batches of modules, providing reliable methodological support for large-scale, continuous green recycling operations.
[0024] In some embodiments, by precisely defining the "signal light blocking state" and its control logic, intelligent detection and power execution are directly linked, achieving millimeter-level precision position perception and instantaneous response. This ensures that heat energy is precisely delivered only to the area covered by the component entity, fundamentally eliminating ineffective energy consumption. The aforementioned closed-loop control strategy is the core of achieving ultra-low operating energy consumption and uniform and efficient heating of the device, providing a key guarantee for the stability and reliability of the process. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of a smart far-infrared-based EVA heating device for decommissioned photovoltaic modules, as shown in some embodiments of this specification. Figure 2 This is a front view of a smart far-infrared-based EVA heating device for decommissioned photovoltaic modules, as shown in some embodiments of this specification. Figure 3 This is a left view of a smart far-infrared-based EVA heating device for decommissioned photovoltaic modules, as shown in some embodiments of this specification. Figure 4 This is a top view of a smart far-infrared-based EVA heating device for decommissioned photovoltaic modules, as shown in some embodiments of this specification. Figure 5 This is a schematic diagram of the operating structure of an EVA heating device for decommissioned photovoltaic modules based on intelligent far-infrared technology, as shown in some embodiments of this specification. Figure 6 This is a schematic diagram of the structure of an intelligent far-infrared heating cluster based on intelligent far-infrared technology, according to some embodiments of this specification. Figure 7This is a front view of an intelligent far-infrared heating cluster based on intelligent far-infrared technology, as shown in some embodiments of this specification. In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Heating device frame; 2. Intelligent far-infrared heating cluster; 21. Far-infrared heating unit body; 22. Auxiliary signal infrared heating rod; 23. Main far-infrared heating rod; 3. Waste photovoltaic roller conveyor device; 4. Intelligent far-infrared detection device; 5. Metal strip; 6. Retired photovoltaic module EVA. Detailed Implementation
[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0032] Example: Figure 1 This is a schematic diagram of a smart far-infrared-based EVA heating device for decommissioned photovoltaic modules, as shown in some embodiments of this specification. Figure 3 This is a left view of a smart far-infrared-based EVA heating device for decommissioned photovoltaic modules, as shown in some embodiments of this specification. The smart far-infrared-based EVA heating device for decommissioned photovoltaic modules includes a smart far-infrared heating cluster 2, a waste photovoltaic roller conveyor 3, and a smart far-infrared detection device 4; wherein, Figure 6 This is a schematic diagram of a smart far-infrared heating cluster based on intelligent far-infrared technology, as shown in some embodiments of this specification. Figure 7This is a front view of an intelligent far-infrared heating cluster based on intelligent far-infrared technology, as shown in some embodiments of this specification. The intelligent far-infrared heating cluster 2 includes several far-infrared heating units. Each far-infrared heating unit includes a far-infrared heating unit body 21, and auxiliary signal infrared heating rods 22 and several main far-infrared heating rods 23 disposed on the far-infrared heating unit body 21. The auxiliary signal infrared heating rods 22 are located in the middle of the far-infrared heating unit body 21, and the several main far-infrared heating rods 23 are located on both sides of the auxiliary signal infrared heating rods 22. (The last sentence appears to be unrelated and refers to a waste photovoltaic roller conveyor system.) A device 3 is installed at the bottom of the intelligent far-infrared heating cluster 2 for transmitting decommissioned photovoltaic modules (EVA6) to be processed; an intelligent far-infrared detection device 4 is installed at the bottom of the waste photovoltaic roller conveyor 3 for detecting the blocking status of the signal light emitted by the auxiliary signal infrared heating rod 22; wherein, the intelligent far-infrared detection device 4 is communicatively connected to the auxiliary signal infrared heating rod 22 and several main far-infrared heating rods 23 of the intelligent far-infrared heating cluster 2, and controls the power of the corresponding main far-infrared heating rod 23 based on the blocking status of the signal light detected by the intelligent far-infrared detection device 4; In some embodiments, the intelligent far-infrared-based retired photovoltaic module EVA heating device further includes a heating device frame 1, which is used to combine various unit components into an overall heating system. The intelligent far-infrared heating cluster 2, the waste photovoltaic roller conveyor 3, and the intelligent far-infrared detection device 4 are all disposed inside the heating device frame 1. The intelligent far-infrared heating cluster 2 consists of several far-infrared heating units arranged in a rectangular array within the heating device frame 1, and the intelligent far-infrared detection device 4 can be located at the inner bottom of the heating device frame 1.
[0033] In some embodiments, Figure 4 This is a top view of a smart far-infrared-based EVA heating device for decommissioned photovoltaic modules, as shown in some embodiments of this specification. The smart far-infrared heating cluster 2 consists of M×N far-infrared heating units with dimensions of 0.2 m×0.2 m, forming a rectangular heating area with dimensions of 2 m×7.2 m. Here, M represents the number of rows in the rectangular heating area, N represents the number of columns in the rectangular heating area, and both M and N are positive integers. In some embodiments, M×N is preferably 10×36, that is, 360 far-infrared heating units.
[0034] In some embodiments, a single far-infrared heating unit includes four main far-infrared heating rods 23 with a length of 18 cm and one auxiliary signal infrared heating rod 22 with a length of 2 cm. The auxiliary signal infrared heating rod 22 is located in the middle of the far-infrared heating unit body 21, and two main far-infrared heating rods 23 are respectively arranged on both sides of the auxiliary signal infrared heating rod 22.
[0035] In some embodiments, the emission bands of the main far-infrared heating rod 23 and the auxiliary signal infrared heating rod 22 are mainly concentrated in 2–14 μm, which highly matches the molecular absorption peak of the EVA film.
[0036] In some embodiments, the main far-infrared heating rod 23 and the auxiliary signal infrared heating rod 22 are preferably made of carbon fiber or ceramic matrix materials, and precise temperature control is achieved through a PLC control system. A thermocouple or infrared thermometer can be optionally installed as a feedback element.
[0037] In some embodiments, the heating temperature of the far-infrared heating unit is 20 °C to 800 °C. The heating temperature can be adjusted according to subsequent process requirements, such as the heating temperature for physical stripping of EVA is 100 °C to 150 °C, and the heating temperature for pyrolysis to remove EVA is set at 450 °C to 800 °C.
[0038] In some embodiments, Figure 2 This is a front view of a smart far-infrared-based EVA heating device for decommissioned photovoltaic modules, as shown in some embodiments of this specification. The waste photovoltaic roller conveying device 3 includes two rollers and several metal strips 5 tensioned between the rollers.
[0039] In some embodiments, the diameter of the roller is 0.5 m, and the number of metal strips 5 is 10.
[0040] In some embodiments, the roller is driven by a variable frequency motor, and the transmission speed of the retired photovoltaic module EVA6 is 0.25 m / s to 1 m / s.
[0041] In some embodiments, for a typical decommissioned photovoltaic module EVA6, when the transmission speed is set to 0.5 m / s, the EVA film only needs to be heated to 120 °C for about 10–15 s, which can meet the requirements of the physical peeling process.
[0042] In some embodiments, the overall device is arranged from top to bottom, with the top layer being the intelligent far-infrared heating cluster 2, the middle layer being the waste photovoltaic roller conveyor 3, and the bottom layer being the intelligent far-infrared detection device 4. The vertical distance between the intelligent far-infrared heating cluster 2 and the waste photovoltaic roller conveyor 3 is 0.2 m to 0.5 m; the vertical distance between the waste photovoltaic roller conveyor 3 and the intelligent far-infrared detection device 4 is 0.2 m to 0.3 m.
[0043] In some embodiments, the intelligent far-infrared detection device 4 is a photoelectric sensor array used to detect whether the light emitted by the auxiliary signal infrared heating rod 22 is blocked by the decommissioned photovoltaic module EVA6. Specifically, it is responsible for detecting and controlling the power of each far-infrared heating unit in the far-infrared heating cluster 2. The low-power mode is a single auxiliary signal infrared heating rod 22, and the maximum power is when all five heating rods (i.e., four main far-infrared heating rods 23 and one auxiliary signal infrared heating rod 22) are turned on simultaneously. The power adjustment logic is as follows: when the intelligent far-infrared detection device 4 detects that the light from a certain far-infrared heating unit in the intelligent far-infrared heating cluster 2 is shining, that is, the decommissioned photovoltaic module EVA6 is not in the area of this far-infrared heating unit, the power of that far-infrared heating unit is reduced to low; when the intelligent far-infrared detection device 4 detects that the light from a certain far-infrared heating unit in the intelligent far-infrared heating cluster 2 has disappeared, that is, the decommissioned photovoltaic module EVA6 is in the area of this far-infrared heating unit, the power of that far-infrared heating unit is reduced to maximum.
[0044] The workflow and principle of the intelligent far-infrared-based EVA heating device for decommissioned photovoltaic modules described in this specification are as follows: After the device is started, each far-infrared heating unit remains in a low-power standby state, with only the auxiliary signal rod lit. As the waste photovoltaic roller conveyor 3 operates, the decommissioned photovoltaic module EVA6 enters the heating area, and the signal light of the corresponding far-infrared heating unit is blocked. The intelligent far-infrared detection device 4 identifies this and sends a signal, immediately switching the aforementioned far-infrared heating units to a high-power state, and the main far-infrared heating rod 23 begins to work. During the transmission process, the decommissioned photovoltaic module EVA6 passes through the heating area sequentially, and the EVA film is gradually heated to the target temperature, achieving efficient heating.
[0045] In some embodiments, Figure 5 The present invention provides a schematic diagram of the operating structure of a smart far-infrared-based EVA heating device for decommissioned photovoltaic modules, as shown in some embodiments of this specification. The invention also provides a smart far-infrared-based EVA heating method for decommissioned photovoltaic modules, comprising the following steps: Step 1: Activate the auxiliary signal infrared heating rod 22, which emits signal light; The waste photovoltaic roller conveyor 3 and the intelligent far-infrared detection device 4 are activated, and the retired photovoltaic module EVA6 is transferred through the waste photovoltaic roller conveyor 3. During the transmission of the retired photovoltaic module EVA6, the intelligent far-infrared detection device 4 detects the shading status of the signal light, and the retired photovoltaic module EVA6 is heated by the main far-infrared heating rod 23 of the far-infrared heating unit according to the detected shading status of the signal light.
[0046] In some embodiments, the signal light blocking state refers to whether the signal light emitted by the auxiliary signal infrared heating rod 22 of the far-infrared heating unit directly above the retired photovoltaic module EVA6 is blocked by the retired photovoltaic module EVA6.
[0047] In some embodiments, heating the decommissioned photovoltaic module EVA6 via the main far-infrared heating rod 23 of the far-infrared heating unit according to the detected signal light occlusion state specifically includes: When the signal light is blocked by the retired photovoltaic module EVA6, the intelligent far-infrared detection device 4 controls the far-infrared heating unit to start the main far-infrared heating rod 23 to heat the retired photovoltaic module EVA6, and the retired photovoltaic module EVA6 is heated to the target temperature. When the signal light is not blocked by the retired photovoltaic module EVA6, the intelligent far-infrared detection device 4 continues to detect the blocking status of the signal light until the heating ends.
[0048] The intelligent far-infrared heating device and method for retired photovoltaic modules based on EVA, as described in this invention, can be applied to the dismantling, EVA film removal, and related recycling processes of retired photovoltaic modules. The advantages of the intelligent far-infrared heating cluster 2 of this invention are that it can control individual far-infrared heating units separately, operating only the far-infrared heating unit directly above the retired photovoltaic module EVA6 at maximum power, thereby significantly reducing the energy consumption of the entire system. Compared with traditional hot air heating and resistance heating, the energy propagation mode of this technology is thermal radiation, resulting in a fast energy transfer rate and eliminating the need for heat transfer media such as air, thus minimizing heat loss compared to traditional heating methods. Furthermore, the intelligent far-infrared heating cluster 2 can further reduce energy consumption by controlling the far-infrared wavelength. More importantly, the EVA of the photovoltaic panel is a high-molecular-weight organic material, and the radiation energy of the cluster can be directly absorbed by the strong absorption band of the polymer. Combined with the resonance effect, this creates a high heating rate for the intelligent far-infrared heating cluster 2. Simultaneously, through the strong penetration characteristics of the intelligent far-infrared heating cluster 2, the inner and outer layers of the EVA are heated simultaneously, ensuring thermal uniformity.
[0049] This invention offers several advantages. First, through regionalized power control, only the far-infrared heating unit directly above the retired photovoltaic module EVA6 operates at full power, while the remaining intelligent far-infrared heating cluster 2 remains in standby mode. This achieves precise energy delivery, significantly reducing energy consumption and achieving an energy saving rate of 40-60%. Second, its core lies in wavelength matching absorption, achieved through precise control of the far-infrared emission band (2-14). The device (μm) closely matches the molecular absorption peak of the EVA film, significantly improving heat conduction efficiency through resonance, resulting in a heating rate 2-3 times higher than traditional methods. Furthermore, an integrated intelligent detection and dynamic control system uses photoelectric sensors to monitor the position of the retired photovoltaic module's EVA6 in real time and automatically control the start and stop of the corresponding far-infrared heating unit. This not only provides rapid response but also effectively avoids localized overheating, ensuring precision and safety during the heating process. Moreover, thanks to the penetrating power of far-infrared radiation, heat can be evenly distributed across the inner and outer layers of the EVA film, achieving synchronous heating and solving the uniformity problem of "surface overheating and internal underheating" that often occurs in traditional conductive heating methods. Finally, the device has strong application scalability; its technical principles are also applicable to the heating and delamination of multilayer composite materials such as laminated glass, composite boards, and laminated plastics, demonstrating broad application prospects.
[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.
Claims
1. A smart far infrared-based EVA heating device for decommissioned photovoltaic modules, characterized by, The application relates to a smart far-infrared heating cluster (2) comprising a plurality of far-infrared heating units, wherein each far-infrared heating unit comprises a far-infrared heating unit body (21), an auxiliary signal infrared heating rod (22) and a plurality of main far-infrared heating rods (23) arranged on the far-infrared heating unit body (21), the auxiliary signal infrared heating rod (22) is arranged at the middle of the far-infrared heating unit body (21), and the plurality of main far-infrared heating rods (23) are arranged on both sides of the auxiliary signal infrared heating rod (22); a waste photovoltaic roller transmission device (3) arranged at the bottom of the smart far-infrared heating cluster (2) and used for transmitting a waste photovoltaic component EVA (6) to be treated; and a smart far-infrared detection device (4) arranged at the bottom of the waste photovoltaic roller transmission device (3) and used for detecting a shielding state of signal light emitted by the auxiliary signal infrared heating rod (22). The smart far-infrared detection device (4) is in communication connection with the auxiliary signal infrared heating rod (22) and the plurality of main far-infrared heating rods (23), and the power of the main far-infrared heating rods (23) is controlled based on the shielding state of the signal light detected by the smart far-infrared detection device (4). The smart far-infrared heating cluster (2) is composed of M*N far-infrared heating units, and a rectangular heating area is formed; wherein M represents the number of rows of the rectangular heating area, N represents the number of columns of the rectangular heating area, and M and N are both positive integers. The heating temperature of the far-infrared heating unit is 20 DEG C-800 DEG C. The waste photovoltaic roller transmission device (3) comprises two rollers and a plurality of metal belts (5) tensioned between the rollers.
2. The EVA heating device for decommissioned photovoltaic modules based on intelligent far infrared according to claim 1, characterized in that, The rollers are driven by a variable frequency motor, and the transmission speed of the waste photovoltaic component EVA (6) is 0.25 m / s-1 m / s.
3. The EVA heating device for decommissioned photovoltaic modules based on intelligent far infrared according to claim 1, characterized in that, The vertical distance between the smart far-infrared heating cluster (2) and the waste photovoltaic roller transmission device (3) is 0.2 m-0.5 m.
4. The EVA heating device for decommissioned photovoltaic modules based on intelligent far infrared according to claim 1, characterized in that, The vertical distance between the waste photovoltaic roller transmission device (3) and the smart far-infrared detection device (4) is 0.2 m-0.3 m.
5. The smart far infrared-based EVA heating device for decommissioned photovoltaic modules according to claim 4, characterized in that, The smart far-infrared detection device (4) is a photoelectric sensor array.
6. The smart far infrared-based EVA heating device for decommissioned photovoltaic modules according to claim 1, characterized in that, The application further discloses a smart far-infrared-based waste photovoltaic component EVA heating device, and the device comprises the following steps: The auxiliary signal infrared heating rod (22) is started, and the auxiliary signal infrared heating rod (22) emits signal light; 7. The EVA heating device for decommissioned photovoltaic modules based on intelligent far infrared according to claim 1, characterized in that, The waste photovoltaic roller transmission device (3) and the smart far-infrared detection device (4) are started, and the waste photovoltaic component EVA (6) is transmitted through the waste photovoltaic roller transmission device (3); 8. A smart far infrared-based EVA heating method for decommissioned photovoltaic modules, characterized by, In the transmission process of the waste photovoltaic component EVA (6), the shielding state of the signal light is detected through the smart far-infrared detection device (4), and the waste photovoltaic component EVA (6) is heated through the main far-infrared heating rods (23) of the far-infrared heating unit according to the detected shielding state of the signal light. 9. The EVA heating method for decommissioned photovoltaic modules based on intelligent far infrared according to claim 8, characterized in that, The shielding state of the signal light is whether the signal light emitted by the auxiliary signal infrared heating rod (22) of the far infrared heating unit directly above the EVA (6) of the retired photovoltaic module is shielded by the EVA (6) of the retired photovoltaic module.
10. The EVA heating method for decommissioned photovoltaic modules based on intelligent far infrared according to claim 8, characterized in that, The heating of the retired photovoltaic module EVA (6) by the main far infrared heating rod (23) of the far infrared heating unit according to the shielding state of the detected signal light specifically comprises: When the signal light is shielded by the EVA (6) of the retired photovoltaic module, the intelligent far infrared detection device (4) controls the far infrared heating unit to start the main far infrared heating rod (23) to heat the EVA (6) of the retired photovoltaic module; When the signal light is not shielded by the EVA (6) of the retired photovoltaic module, the intelligent far infrared detection device (4) continues to detect the shielding state of the signal light.