Containerized double-glass photovoltaic module recycling device and recycling process

Abstract

The application discloses a container type double-glass photovoltaic module recycling equipment and process, which comprises a junction box removing device, a frame removing device, a glass stripping device, a container, a junction box removing device, a frame removing device, a glass stripping device and a connection transfer device. On one hand, the application reduces the battery piece transportation cost through quality change, and greatly reduces the mixing between silicon and silicon dioxide (glass) under the pretreatment of stress relief and preheating; on the other hand, part of the process which needs independent frame removing or independent stripping can be independently operated or combined, and is high in flexibility and free in combination and selection, including free combination and purchase or lease. In addition, through the container docking and transfer, the application is not limited by the site level and height difference, and can be recycled in the site environment with inconsistent levels once the container is docked, so that the technical obstacles of on-site recycling are overcome, and the development of on-site recycling technology is promoted.

Description

[0001] This application is a divisional application of Containerized Photovoltaic Module Recycling Equipment, filed on November 17, 2023, with application number 2023115321589. Technical Field

[0002] This invention belongs to the field of photovoltaic technology, specifically relating to a containerized double-glass photovoltaic module recycling equipment and a containerized photovoltaic module recycling process. Background Technology

[0003] Photovoltaics (PV) is a new type of power generation system that utilizes the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy. It can operate independently or be connected to the grid. A photovoltaic panel module is a power generation device that generates direct current when exposed to sunlight. It consists of thin, solid-state photovoltaic cells made almost entirely of semiconductor materials (such as silicon), specifically including a glass panel, EVA adhesive layer, solar cells, backsheet, junction box, and frame. More than 90% of these materials are recyclable, possessing considerable recycling value and high economic profits. Therefore, photovoltaic modules that have reached the end of their lifespan need to be recycled, which not only alleviates the shortage of raw materials for photovoltaic devices to some extent but also avoids environmental pollution.

[0004] However, existing photovoltaic module recycling methods generally involve first collecting photovoltaic modules (including single-glass, double-glass, and frameless photovoltaic modules), then loading and transporting them to a designated site for individual recycling. Therefore, this recycling method has the following drawbacks:

[0005] 1) The weight of a single photovoltaic module is about 18-30kg. Therefore, not only is the quantity limited during recycling and transportation, but the number of recycling and transportation will also increase. This results in defects such as high recycling costs and low efficiency. However, after dismantling and stripping, the weight of the cells in a single photovoltaic module is 10-15g. Therefore, if the cells are recycled directly on site, it will be a qualitative change in terms of transportation.

[0006] 2) During the recycling process, recycling equipment is generally placed horizontally on the ground, and there are height differences between adjacent processes that require connection. Only after the entire process is dismantled can the recycling needs be met. However, if the recycling equipment is placed on-site, the limitations of the on-site environment (levelness and height differences, etc.) cannot solve the problem of placing the recycling equipment. Therefore, it is impossible to carry out recycling under conditions of inconsistent levelness, resulting in obvious technical obstacles to on-site recycling and hindering the development of on-site recycling of photovoltaic modules. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an improved containerized double-glass photovoltaic module recycling equipment.

[0008] The present invention also relates to a recycling process for containerized photovoltaic modules.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0010] A containerized double-glass photovoltaic module recycling equipment includes a junction box removal device, a frame removal device, and a glass peeling device. The glass peeling device includes a pre-treatment unit for stress relief and softening of each glass surface through crushing and softening, a primary peeling unit, a connecting and reversing unit, and a secondary peeling unit, and performs crushing, softening, primary peeling, and secondary peeling on each glass surface sequentially. In particular, the double-glass photovoltaic module recycling equipment also includes at least two containers joined at their ends along the length direction, the junction box removal device, the frame removal device, the glass peeling device, and a connecting transfer device located between two adjacent container sections. The junction box removal device and the frame removal device are located within the same container section, and each unit of the glass peeling device is located within the remaining container. The connecting transfer device eliminates the height difference between the preceding and following container sections, and the connecting transfer device is located at the tail end of either the preceding or following container.

[0011] Preferably, there are two containers, with the junction box removal device and the frame removal device located in the first container, the glass peeling device located in the second container, and the connecting transfer device located between the frame removal device and the peeling pretreatment unit.

[0012] In some specific embodiments, the frame removal device is located above the pretreatment unit. After the double-glass photovoltaic module with the frame removed enters the transfer channel formed by the connecting transfer device, it gradually descends to a horizontal state and is sent into the stripping pretreatment unit.

[0013] According to a specific embodiment and preferred aspect of the present invention, the connecting transfer device includes a horizontally extending receiving section and a guide section inclined from top to bottom, wherein a transfer channel that gradually decreases in size from front to back is formed between the receiving section and the guide section.

[0014] Preferably, both the receiving section and the guiding section are annular transmission belts.

[0015] According to another specific embodiment and preferred aspect of the invention, the preceding container has two compartments, with junction box removal device and frame removal device arranged sequentially in the two compartments, and each compartment having an openable or closed wing door on its side.

[0016] Preferably, the wing door is configured to open or close by flipping around the length of the container.

[0017] According to another specific embodiment and preferred aspect of the present invention, the peeling pretreatment unit includes a stress-relieving mechanism and a preheating mechanism, wherein the stress-relieving mechanism includes a transmission channel connected to a transfer channel, a lifting component capable of moving up and down and connected to a photovoltaic module from the transmission channel, and a crushing head located at the top, wherein the lifting component is raised upward after being connected to the photovoltaic module, and crushes the upper glass under the vertical compression formed by the glass bonding crushing head; the preheating mechanism is used to soften the adhesive layer of the glass.

[0018] Preferably, the lifting component includes a telescopic cylinder and a support frame, wherein the support portion of the support frame is misaligned with the transmission channel, and the photovoltaic module is connected when the support portion protrudes from the transmission surface of the transmission channel; and / or, there are multiple extrusion crushing heads, which are arranged in an array on the bottom surface of the top seat plate; and / or, each extrusion crushing head includes a fixed rod and a crushing head located at the bottom of the fixed rod, wherein the crushing head gradually narrows from top to bottom and has a spherical bottom; and / or, the preheating mechanism includes a heating furnace and a heating roller, wherein the heating roller forms the transmission surface, and the temperature formed in the heating furnace is 80-120°C.

[0019] Another technical solution of the present invention is: a containerized photovoltaic module recycling process, wherein the recycling equipment includes at least two containers that can be docked at their ends along the length direction; a junction box removal device, a frame removal device, and a glass peeling device arranged in each container; and a connecting transfer device located between two adjacent containers, and includes the following steps:

[0020] S1, Equipment Assembly

[0021] The junction box removal device and the frame removal device are loaded separately by a transport vehicle. The junction box removal device and the frame removal device are loaded into one container, and the glass peeling device and the back panel removal device are loaded into the remaining container. The required containers are delivered to the recycling site and the two containers are aligned and spliced ​​in the front and rear directions. The connecting transfer device eliminates the height difference between the front and rear sections of the container, and the connecting transfer device is located at the tail section of the front container or the rear container.

[0022] S2, Recycling

[0023] First, the junction box and backing adhesive are removed. Simultaneously, the removed junction box is discharged from the side outlet of the container. After the junction box is removed, the photovoltaic module enters the frame removal device, which removes the long and short sides separately. Simultaneously, the removed long and short sides are discharged from the side outlet. The photovoltaic module or frameless photovoltaic module with the frame removed is directly transferred through the transfer channel and gradually lowered to a horizontal state before being sent into the corresponding container for stress-relief crushing. Then, it is softened and subjected to initial and secondary peeling, with the broken glass discharged from the side outlet. Then, the other side of the glass is subjected to stress-relief crushing, softening, initial peeling, and secondary peeling to complete the recycling of the solar cells.

[0024] Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0025] In existing photovoltaic (PV) module recycling, a single PV module weighs approximately 18-30 kg. This not only limits the quantity that can be recycled and transported but also increases the number of transport trips, resulting in high recycling costs and low efficiency. However, after dismantling and stripping, the weight of a single PV module's solar cells is only 10-15 g. Therefore, directly recycling the solar cells on-site would significantly improve transportation efficiency. During recycling, equipment is typically placed horizontally on the ground, and there are height differences between adjacent processes requiring seamless connection. The entire process must be dismantled before recycling can be completed. However, placing the equipment on-site presents challenges due to environmental limitations (levelness and height differences), making it impossible to recycle even with inconsistent levels. This creates significant technical obstacles to on-site PV module recycling and hinders its development. This invention cleverly addresses these shortcomings by comprehensively designing the PV module recycling process and equipment. After adopting this photovoltaic module recycling equipment, the modules are loaded separately using transport vehicles. The junction box removal device and frame removal device are loaded into one container, while the glass peeling device and backsheet removal device are loaded into the remaining containers. The required containers are delivered to the recycling site, where two containers are aligned front-to-back. A connecting transfer device eliminates the height difference between the two containers and is located at the end of either the preceding or following container. First, the junction box and backing adhesive are removed, with the removed junction box exiting from the side outlet. The photovoltaic modules with the junction box removed then enter the frame removal device, where the long and short sides are removed separately, with the removed long and short sides exiting from the side outlet. The photovoltaic modules with the frame removed, or frameless photovoltaic modules, are directly transferred through the transfer channel and gradually lowered to a horizontal state before being fed into the corresponding container for stress-relieving crushing. After softening, the glass is peeled off, and the broken glass exits from the side outlet. The cells are discharged while the other side of the glass undergoes stress relief, softening, initial peeling, and secondary peeling to complete the recycling of the cells. Therefore, this invention reduces the transportation cost of cells by qualitative changes under the condition of container splicing and recycling, and significantly reduces the mixing between silicon and silica (glass) through stress relief and preheating pretreatment. On the other hand, some processes that require independent frame disassembly or peeling are implemented independently in two containers. This allows for independent or combined operations, enabling multi-scenario applications with high flexibility. Manufacturers of the required equipment can freely choose and combine options, including free combination of purchase or leasing. In addition, through container docking and connection for transfer, it is not limited by the levelness and height difference of the site. Once the containers are docked, recycling can be carried out in site environments with inconsistent levelness, thereby overcoming technical obstacles to on-site recycling and promoting the development of on-site recycling technology. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the containerized photovoltaic module recycling equipment of the present invention;

[0027] Figure 2 for Figure 1 Enlarged structural diagram of the front section of the container;

[0028] Figure 3 for Figure 2 A schematic diagram of the structure of the enclosure containing the junction box removal device after the wing door is opened;

[0029] Figure 4 for Figure 2 A schematic diagram of the structure of the box wing door where the middle frame removal device is located after it has been unfolded;

[0030] Figure 5 for Figure 1 Enlarged structural diagram of the middle and rear container section;

[0031] Figure 6 for Figure 5 Simplified structural diagram;

[0032] Figure 7 for Figure 6 Schematic diagram of the structure of the primary stripping unit;

[0033] Figure 8 for Figure 6 A schematic diagram of the structure of the stripping unit in the middle;

[0034] Figure 9 for Figure 8 A partial structural diagram;

[0035] Of which: 1. Container; 10. Container compartments; 100. Wing doors;

[0036] 2. Connecting transfer device; 20. Receiving section; 21. Guiding section;

[0037] 3. Junction box removal device;

[0038] 4. Frame removal device;

[0039] 5. Glass peeling device; 50. Primary peeling unit; 51. Secondary peeling unit; 52. Connecting and reversing unit; 53. Peeling pretreatment unit; 531. Stress relief mechanism; a. Transmission channel; b. Lifting component; b1. Telescopic cylinder; b2. Bearing frame; c. Crushing head; c1. Fixed rod; c2. Crushing head; 532. Preheating mechanism; d. Heating furnace; e. Heating roller;

[0040] 6. Backplate removal device; 60. Transmission unit; 600. Circular transmission belt assembly; 601. Inner support transmission roller; 61. Grinding unit; m. Grinding tool; n. Cooling tool; n1. Water pipe; n2. High-pressure nozzle. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] 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 are not intended to 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.

[0043] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] like Figure 1 As shown, the containerized photovoltaic module recycling equipment involved in this embodiment includes at least two containers 1 that can be docked from the ends in the length direction, a connecting transfer device 2 located between two adjacent containers 1, a junction box removal device 3, a frame removal device 4, and a glass peeling device 5.

[0048] In some specific embodiments, container 1 has two sections. The junction box removal device 3 and the frame removal device 4 are located in the front section of container 1, and the glass peeling device 5 is located in the rear section of container 1. During recycling, two transport vehicles are aligned and spliced ​​from the rear. The connecting transfer device 2 eliminates the height difference between the front and rear sections and guides the photovoltaic modules with the junction boxes and frames removed into the glass peeling device 5. The side of each container 1 forms a material inlet. The photovoltaic modules undergo junction box removal, frame removal, peeling pretreatment, initial roller peeling, and second removal of residual glass in sequence and continuously through the connecting transfer device 2. The junction box, frame, and broken glass are discharged from the material inlet respectively. The solar cells are stored in the corresponding container 1.

[0049] Combination Figures 2 to 4As shown, the preceding container 1 has two sub-compartments 10. A junction box removal device 3 and a frame removal device 4 are sequentially arranged within the two sub-compartments 10. Each sub-compartment 10 has openable or closed wing doors 100 on both sides. The wing doors 100 are designed to open or close from the top of the sub-compartment 10, rotating around the length of the container. The opposite sides of the open wing doors 100 form material inlets, through which the removed junction boxes and frames are discharged. Meanwhile, the junction box removal device 3 and the frame removal device 4 are respectively referenced in CN115179022A, patent titled: Integrated Disassembly and Removal Equipment and Method for Frames and Junction Boxes of Photovoltaic Modules. The junction box removal device 3 refers to a junction box removal station, and the frame removal device 4 refers to a frame removal station. Further details are omitted here, as they are clearly feasible.

[0050] Combination Figure 5 As shown, the connecting transfer device 2 is located at the tail end of the next container 1, and the output end of the frame removal device 4 is located above the input end of the glass peeling device 5. The connecting transfer device 2 includes a horizontally extending receiving section 20 and a guide section 21 that is inclined from top to bottom. A transfer channel that gradually decreases in size from front to back is formed between the receiving section 20 and the guide section 21, and both the receiving section 20 and the guide section 21 are annular transmission belts.

[0051] Combination Figures 6 to 9 As shown, the glass peeling device 5 includes a primary peeling unit 50, a secondary peeling unit 51, and a connecting reversing unit 52. The glass peeling device 5 refers to CN116603836A, patent name: Glass Separation, Removal and Recycling Equipment for Photovoltaic Modules. That is, the primary peeling device corresponds to the primary peeling unit 50 of this application; the secondary peeling device corresponds to the secondary peeling unit 51 of this application; and the connecting reversing device corresponds to the connecting reversing unit 52 of this application. It is clear and feasible, without going into details here. In other words, the primary peeling unit 50 can keep the broken photovoltaic module from having its broken glass peeled off by the upper roller at the same slope; the secondary peeling unit 51 can remove the remaining glass at the same angle of the photovoltaic module; and the connecting reversing unit 52 is used to reverse the front and back of the photovoltaic module and connect the primary peeling unit and the secondary peeling unit.

[0052] See you again Figure 6The glass peeling device 5 also includes a peeling pretreatment unit 53 located at the front end of the primary peeling unit 50. The peeling pretreatment unit 53 includes a stress-relieving mechanism 531 and a preheating mechanism 532. The stress-relieving mechanism 531 is used for glass to break or shatter under pressure. The stress-relieving mechanism 531 includes a transmission channel a connected to the transfer channel, a lifting component b that can move up and down and connects to the photovoltaic module from the transmission channel a, and a crushing head c located at the top. The lifting component b is lifted upward after connecting to the photovoltaic module and crushes the upper glass under the vertical compression formed by the glass adhering to the crushing head c. In some specific embodiments, the lifting component b includes a telescopic cylinder b1 and a support frame b2. The support part of the support frame b2 is misaligned with the transmission channel. When the support part protrudes from the transmission surface of the transmission channel a, the connection of the photovoltaic module is completed. Multiple crushing heads (c) are arranged in an array on the bottom surface of the top seat plate. Each crushing head (c) includes a fixed rod (c1) and a crushing head (c2) located at the bottom of the fixed rod (c1). The crushing heads gradually narrow from top to bottom and have a spherical bottom. This creates optimal crushing pressure, reducing the difficulty of peeling and preventing damage to the solar cells. The preheating mechanism (532) softens the adhesive layer of the glass and includes a heating furnace (d) and a heating roller (e). The heating roller (e) forms a transmission surface, and the temperature formed in the heating furnace (d) is 80–120°C. Generally, 90±2°C is sufficient. The purpose of the preheating temperature is to break the stress on the adhesive film and the glass, making the glass easier to peel off.

[0053] Furthermore, to further facilitate the subsequent processing of solar cells, the photovoltaic module recycling equipment in this embodiment also includes a backsheet removal device 6 docked with the re-stripping unit 51. The backsheet removal device 6 includes a transmission unit 60 and a grinding unit 61 located above the transmission surface formed by the transmission unit 60, wherein the grinding unit 61 performs wet grinding. Using wet grinding to remove the backsheet avoids environmental pollution and toxicity caused by the vaporization of fluorine-containing components, and also avoids mixing caused by backsheet residue, further improving the purity of the recycled silicon. The grinding unit 61 includes multiple grinding groups arranged side-by-side above the transmission surface formed by the transmission unit 60. Each grinding group includes a grinding tool m and a cooling tool n, wherein the grinding tool m is a grinding wheel and / or abrasive belt, and the cooling tool n is a water jet for cooling.

[0054] In some specific embodiments, the transmission unit 60 includes an annular drive belt assembly 600 and an inner support transmission roller 601 located at the grinding point. In this example, two grinding points are used in a front-to-back arrangement, where the grinding tool m is an abrasive belt grinding component, and the grit of the abrasive paper increases sequentially along the transmission direction. This combination of coarse grinding and fine grinding effectively improves the backsheet removal quality. There are two inner support transmission rollers 601, each corresponding to one of the grinding tools m. The cooling tool n corresponds to one of the inner support transmission rollers 601 and is symmetrically arranged about the front and back of the inner support transmission rollers 601. The cooling tool n includes a water pipe n1 located above the annular drive belt assembly 600, high-pressure nozzles n2 spaced along the length of the water pipe n1, and a cooling liquid pressurization supply component. The high-pressure nozzles n2 are inclined downwards towards the grinding point, and the vertical component of the sprayed water flow constitutes a downward positive pressure that presses the battery cell onto the annular drive belt assembly 600, while grinding and transmission occur simultaneously under the transmission of the annular drive belt assembly 600. In addition, the cooling is achieved by counter-current water flow, and the horizontal components of the water flow cancel each other out, thus not affecting the transmission of the battery cells; at the same time, the grinding direction of the grinding wheel and / or the belt grinding parts is the same as the transmission direction, which facilitates transmission; the grinding tool m can also be a combination of grinding wheel and belt grinding parts for wet grinding.

[0055] In summary, the implementation process of this embodiment is as follows:

[0056] S1, Equipment Assembly

[0057] Two transport vehicles are used to load the two containers. The junction box removal device 3 and the frame removal device 4 are loaded into one container 1, and the glass peeling device 5 and the back panel removal device 6 are loaded into another container 1. The two containers 1 are delivered to the recycling site, and the two transport vehicles are aligned from the rear to the front and rear to splice the two containers 1.

[0058] S2, Recycling

[0059] The photovoltaic module is sent to the junction box removal device 3, where the junction box and backing adhesive are removed. Simultaneously, the removed junction box is discharged from the side outlet. The photovoltaic module with the junction box removed then enters the frame removal device 4, where the long and short sides are removed separately. The removed long and short sides are discharged from the side outlet. After the frame is removed, the photovoltaic module enters the transfer channel and gradually descends to a horizontal position before being sent to the peeling pretreatment unit 53. Next, it is crushed by the stress-relieving mechanism 531 and then sent to a 90±2℃ heating furnace for preheating to soften the backing adhesive. The pretreated photovoltaic module is then sent to the glass peeling device 5, where the primary peeling unit 50 keeps the crushed photovoltaic module at the same incline as it is peeled off by the upper roller. The surface of the broken glass is connected to the reversing unit 52 for reversing the front and back of the photovoltaic module and connecting the primary stripping unit and the secondary stripping unit. The secondary stripping unit 51 removes the remaining glass at the same angle as the photovoltaic module to complete the glass removal. At this time, the broken glass is discharged from the side outlet. Meanwhile, the solar cells enter the back sheet removal device 6 with the back sheet facing upward. The back sheet is removed by wet grinding to form the solar cells. The wet grinding uses two-stage abrasive belt grinding parts, and the grit of the abrasive paper selected for the two-stage abrasive belt grinding parts increases. Then, the grinding is cooled by the downward impact formed by the high-pressure nozzle, and the solar cells are transported to the collection layer of the container 1 by the ring transmission belt assembly 600 to complete the recycling of the solar cells.

[0060] Therefore, after adopting this photovoltaic module recycling equipment, the equipment is assembled through on-site container docking. The photovoltaic modules undergo sequential and continuous dismantling of junction boxes, frame removal, pre-treatment by peeling, initial stripping by rollers, and removal of residual glass via a connecting transfer device. The junction boxes, frames, and broken glass are discharged from the material inlet, while the solar cells are stored in corresponding containers or discharged from the material inlet. Thus, this invention achieves several advantages. First, after implementing on-site recycling, the weight of the solar cells recycled from a single photovoltaic module is approximately 10g. Combined with the cost of transporting the equipment once, compared to existing centralized recycling methods involving loaded photovoltaic modules, transportation costs are significantly reduced, offering greater flexibility and practicality. Second, through container docking and connecting transfer, it is not limited by on-site levelness or height differences. Once the containers are docked, recycling can be carried out in environments with inconsistent levelness, thereby overcoming technical obstacles to on-site recycling and promoting on-site recycling. The development of recycling technology; the advantages of junction box and frame removal and glass peeling are respectively referred to CN115179022A and CN116603836A, and will not be elaborated here; the fourth aspect is that in the process of removing glass and backsheet, stress relief and preheating are combined to eliminate some stress, and the glass is peeled off with high quality and no residue in the multiple peeling, which greatly reduces the mixing between silicon and silicon dioxide (glass) and also reduces the difficulty of subsequent processing. In the end, the purity of silicon is effectively improved to meet the requirements of recycling. At the same time, wet grinding is used to remove the backsheet. The sprayed water flow forms positive pressure and is cooled by the water flow. After the water flow is flushed, the horizontal component force cancels each other out and does not affect the transmission of the battery cell. After cooling, it will not cause environmental pollution or toxicity caused by the vaporization of fluorine components. It also avoids mixing caused by backsheet residue and further improves the purity of recycled silicon.

[0061] The present invention has been described in detail above, with the aim of enabling those skilled in the art to understand and implement the invention. However, this description should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be included within the scope of protection of the invention.

Claims

1. A containerized double-glass photovoltaic module recycling device, comprising a junction box removal device, a frame removal device, and a glass peeling device, wherein the glass peeling device comprises a primary peeling unit, a reversing unit, and a secondary peeling unit, characterized in that: The glass stripping device also includes a pre-treatment unit for stress relief and softening of each glass pane, and performs glass stripping, softening, initial and secondary stripping on each pane. The double-glass photovoltaic module recycling equipment also includes at least two containers connected end-to-end along the length direction, a junction box removal device, a frame removal device, a glass stripping device, and a connecting transfer device located between two adjacent containers. The junction box removal device and the frame removal device are located in the same container, and each unit of the glass stripping device is located in the remaining container. The connecting transfer device eliminates the drop between the front and rear containers and is located at the tail end of the front or rear container. The connecting transfer device includes a horizontally extending receiving section and a guide section inclined from top to bottom. A transfer channel that gradually decreases in size from front to back is formed between the receiving section and the guide section. Both the receiving section and the guide section are annular transmission belts. The frame removal device is located above the pre-treatment unit. After the double-glass photovoltaic module with the frame removed enters the transfer channel formed by the connecting transfer device and gradually descends to a horizontal state before being sent into the pre-treatment unit. The pretreatment unit includes a stress-relieving mechanism and a preheating mechanism. The stress-relieving mechanism includes a transmission channel that connects to the transfer channel, a lifting component that can move up and down and connects to the photovoltaic module from the transmission channel, and a crushing head located at the top. The lifting component is lifted upward after connecting to the photovoltaic module and crushes the upper glass under the vertical compression formed by the glass-fitting crushing head. Each crushing head includes a fixed rod and a crushing head located at the bottom of the fixed rod. The crushing head gradually narrows from top to bottom and has a spherical bottom. The preheating mechanism is used to soften the adhesive layer of the glass and includes a heating furnace and a heating roller. The heating roller forms a transmission surface, and the temperature formed in the heating furnace is 80~120℃.

2. The containerized double-glass photovoltaic module recycling equipment according to claim 1, characterized in that: The container consists of two parts. The junction box removal device and the frame removal device are located in the first container, and the glass peeling device is located in the second container. The connecting transfer device is located between the frame removal device and the pre-processing unit.

3. The containerized double-glass photovoltaic module recycling equipment according to claim 2, characterized in that: The previous container has two compartments, with junction box removal device and side panel removal device arranged sequentially in the two compartments, and each compartment has a wing door that can be opened or closed on the side.

4. The containerized double-glass photovoltaic module recycling equipment according to claim 3, characterized in that: The wing doors are designed to open or close by rotating around the length of the container.

5. The containerized double-glass photovoltaic module recycling equipment according to claim 1, characterized in that: The lifting component includes a telescopic cylinder and a support frame. The support part of the support frame is misaligned with the transmission channel. When the support part protrudes from the transmission surface of the transmission channel, the photovoltaic module is connected.

6. The containerized double-glass photovoltaic module recycling equipment according to claim 1, characterized in that: The crushing heads are multiple and are arranged in an array on the bottom surface of the top seat plate.

7. A containerized photovoltaic module recycling process, characterized in that, The recycling equipment used is the containerized double-glass photovoltaic module recycling equipment as claimed in any one of claims 1 to 6, and includes at least two containers that can be docked from their ends along the length direction; a junction box removal device, a frame removal device, and a glass peeling device arranged in each of the containers; and a connecting transfer device located between two adjacent containers, and includes the following steps: S1, Equipment Assembly The junction box removal device and the frame removal device are loaded separately by a transport vehicle. The junction box removal device and the frame removal device are loaded into one container, and the glass peeling device and the back panel removal device are loaded into the remaining container. The required containers are delivered to the recycling site and the two containers are aligned and spliced ​​in the front and rear directions. The connecting transfer device eliminates the height difference between the front and rear sections of the container, and the connecting transfer device is located at the tail section of the front container or the rear container. S2, Recycling First, the junction box and adhesive backing are removed. Simultaneously, the removed junction box is discharged from the side outlet of the container. After the junction box is removed, the photovoltaic module enters the frame removal device, which removes the long and short sides separately. The removed long and short sides are discharged from the side outlet. The photovoltaic module with the frame removed, or the frameless photovoltaic module, is directly transferred through the transfer channel and gradually lowered to a horizontal position before being fed into the corresponding container for stress-relief crushing. Then, it is softened before initial and secondary peeling, with the broken glass discharged from the side outlet. Next, the stress-relief crushing, softening, initial peeling, and secondary peeling of the other side of the glass are performed. To complete the recycling of battery cells.

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