A device and method for disassembling a scrapped photovoltaic module back plate

Abstract

The invention relates to the technical field of photovoltaic module recycling, and in particular to an overall disassembly device and method for a scrapped photovoltaic module back plate, comprising a workbench, a hot knife disassembly device and a lifting synchronous belt device, wherein the hot knife disassembly device comprises a hot knife frame, two hot knife bases are mounted on the hot knife frame, hot knife blades are mounted at the bottom of the hot knife bases and heating rods are mounted inside, a rough roller is mounted on the outer side of each hot knife base and a fine roller is mounted between the two hot knife bases; the invention utilizes the heated hot knife blades to quickly melt EVA, reduces the bonding effect and toughness of the packaging material, thereby facilitating the planing of the back plate by the hot knife blade, reduces power consumption, utilizes the rough roller and the fine roller to press the photovoltaic module, ensures the stability of the planing, reduces the limitation of processing the photovoltaic module, can also process broken and bent photovoltaic panels, and improves the efficiency of recycling.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic module recycling, and in particular to an overall disassembly device and method for a scrapped photovoltaic module back plate. Background Art

[0002] Photovoltaic modules are composed of a variety of materials. In general recycling solutions, they are usually processed by removing the frame and junction box. After the processing, the photovoltaic modules are generally laminated boards, consisting of tempered glass, encapsulation layer, battery cells, and photovoltaic backplanes. In the subsequent processing, the more popular treatment solutions currently include inorganic acid dissolution, organic solvent dissolution, thermal decomposition, physical method, and comprehensive method.

[0003] The photovoltaic module backplane is located on the back of the photovoltaic panel, protecting and supporting the cells, and generally has a multi-layer structure (fluorine film / PET / fluorine film). The fluorine film is generally polyvinyl fluoride or polyvinylidene fluoride. To ensure long-term outdoor use, it has the characteristics of insulation, water resistance, aging resistance, weather resistance, high and low temperature resistance, and chemical resistance. However, fluorine compounds are harmful to the human body. A small amount of fluorine (less than 150 mg) can cause a series of diseases. A large amount of fluoride entering the body can cause acute poisoning. General heat treatment methods and solvent methods will cause huge environmental pollution, and because the encapsulation layer has a large viscosity, manual removal is slow, time-consuming and labor-intensive. In addition, some existing physical methods can only process complete photovoltaic modules, and for broken and bent modules, only chemical methods or pyrolysis methods can be used, which are more polluting. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to overcome the problem that the heat treatment method and solvent method used in the prior art when dismantling photovoltaic modules cause environmental pollution and the general physical method has great limitations, a device and method for overall dismantling of the back panel of scrapped photovoltaic modules is now provided.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a device for dismantling the back sheet of a scrapped photovoltaic module, comprising:

[0006] A workbench, comprising a work plate for carrying a photovoltaic module;

[0007] A hot knife disassembly device is slidably installed above the workbench along the X-axis direction and can be lifted and lowered along the Z-axis direction. The hot knife disassembly device includes a hot knife frame, on which two hot knife bases are symmetrically installed, a hot knife blade is installed at the bottom of each hot knife base and a plurality of heating rods are installed inside, a rough roller is installed on the outside of each hot knife base and a fine roller is installed between the two hot knife bases, and the hot knife bases, hot knife blades, rough rollers and fine rollers all extend along the Y-axis direction; during disassembly, the hot knife disassembly device is driven to move along the X-axis direction, and the rough roller located at the front end of the movement direction is always pressed on the back plate to be peeled off The photovoltaic module is pressed between the rough roller and the working flat plate to fix the photovoltaic module. The hot knife blade at the rear end extends between the backboard and the battery cell (i.e. the EVA part of the packaging material). The heated hot knife blade quickly melts the EVA to peel off the backboard. At the same time, the fine roller and another rough roller behind the hot knife blade in working state also press the photovoltaic module to further fix the photovoltaic module. The cooperation of the rough roller and the fine roller can avoid the movement of the photovoltaic module caused by the thrust on the backboard when the hot knife blade peels off the backboard. Through the cooperation of the two, the broken or bent photovoltaic modules can also be fixed for the hot knife blade to work.

[0008] And a lifting synchronous belt device, which is used for transferring the photovoltaic components on it to the working flat plate or transferring the photovoltaic components on the working flat plate to it.

[0009] First, the photovoltaic module is transported to the working flat plate with the backplane facing upward, and then the hot knife disassembly device is driven to move along the X-axis direction to the edge or appropriate position of the photovoltaic module, and then the hot knife disassembly device is driven downward to the backplane. After the hot knife base is heated to the specified temperature, the hot knife disassembly device is driven to move along the X-axis direction again. During the movement, the rough roller is always pressed on the backplane, and the hot knife base quickly melts the EVA packaging material between the backplane and the battery cell to quickly peel the backplane from the battery cell.

[0010] The above technical solution utilizes the heated hot knife matrix to quickly melt the EVA, reducing the adhesion and toughness of the packaging material, which is beneficial to the planing of the back panel by the hot knife blade, reducing power consumption, and utilizing coarse rolling and fine rolling to press the photovoltaic modules, thereby ensuring the stability of planing and reducing the limitations of processing photovoltaic modules. Broken and bent photovoltaic panels can also be processed, thereby improving the benefits of recycling.

[0011] Furthermore, the lifting synchronous belt device includes two rubber conveyor belts extending along the X-axis direction and a thin cylinder for driving the lifting thereof. The working platform is provided with two through grooves for the two rubber conveyor belts to pass through; when the photovoltaic components to be disassembled are transmitted over, the thin cylinder drives the two rubber conveyor belts to rise above the working platform to receive the photovoltaic components, and then the thin cylinder drives the two rubber conveyor belts to descend to transfer the photovoltaic components on it to the working platform. After the disassembly is completed, the thin cylinder drives the two rubber conveyor belts to rise to transfer the photovoltaic components on the working platform to it and then send them away.

[0012] Furthermore, a transverse lifting frame device for driving the hot knife disassembly device to move along the Z-axis direction is installed above the workbench, and the transverse lifting frame device includes a base plate, a ball screw pair and a ball screw motor for driving the ball screw pair, a middle mounting plate is fixed on the base plate, a nut of the ball screw pair is embedded in the middle mounting plate, two guide rods are inserted in the middle mounting plate through a guide rod sleeve, the two guide rods are distributed on both sides of the screw rod, an upper mounting plate is fixed on the top of the guide rod through a flange, and a lower mounting plate for installing the hot knife disassembly device is fixed on the bottom of the guide rod through a fixing sleeve, the upper mounting plate, the lower mounting plate and the two guide rods form a frame, the lower mounting plate and the screw rod of the ball screw pair are rotatably connected through a bearing, and the ball screw motor is installed on the upper mounting plate; the ball screw motor is driven, the screw rod rotates, and because the nut is embedded in the middle mounting plate and fixed, the screw rod can move up and down, driving the lower mounting plate to move, thereby driving the frame and the hot knife disassembly device to move up and down.

[0013] Furthermore, a double-screw transmission device for driving the hot knife disassembly device to move along the X-axis direction is installed above the workbench, and the double-screw transmission device includes a double-screw motor, and the output end of the double-screw motor is transmission-connected to two screw transmission pairs, and the base plate is installed on two screw nuts on the two screw transmission pairs; the rotation of the double-screw motor drives the two screws to rotate, thereby driving the hot knife disassembly device to move along the X-axis direction.

[0014] Furthermore, a double slide rail guide device is installed above the workbench, and the double slide rail guide device includes two long horizontal support beams erected on the workbench, both of which extend along the X-axis direction and are provided with two slide rails, and an upper silver slider matching the slide rail is installed at the bottom of the base plate, and the upper silver slider is slidably installed on the slide rail to guide and support the movement of the hot knife disassembly device.

[0015] Furthermore, the double-slide rail guiding device also includes two auxiliary mounting plates, both of which extend along the Y-axis direction and are respectively located at the head and tail of the long cross beam, and the double-screw transmission device is installed on the two auxiliary mounting plates.

[0016] Furthermore, the workbench also includes four high bottom beams, two wide bottom beams, two long bottom beams and two building beams to form a base supporting the working plate, and the two adjacent beams are reinforced by angle brackets.

[0017] Furthermore, the temperature of the hot knife blade in the working state is 105-135° C., which can ensure that the packaging material EVA therein is melted but does not cause the back plate to react.

[0018] A method for using the above-mentioned overall disassembly device for scrapped photovoltaic module back panels comprises the following steps:

[0019] S1: Carry in and place. The back panels of the photovoltaic modules with the junction boxes and frames removed in the previous process are placed upwards and transported by staff or conveyor belts to the designated position on the work platform.

[0020] S2: Positioning movement, driving the transverse lifting frame device to move along the X-axis direction to the edge or a suitable position of the photovoltaic module, and then driving the hot knife disassembly device to move down to the back plate of the photovoltaic module;

[0021] S3: Heating the blade body, energizing the heating rod to heat it to a specified temperature;

[0022] S4: Planing off the back sheet, and moving the lateral lifting frame device and the hot knife disassembly device laterally through the double-screw transmission device, so as to peel the back sheet off the photovoltaic module;

[0023] S5: cleaning and returning to the original position, collecting and processing the peeled backplane, and then lifting the hot knife disassembly device and returning the transverse lifting frame device to the original position;

[0024] S6: Transport out, lift the synchronous belt device to transport the processed photovoltaic modules out for the next step of processing.

[0025] The beneficial effects of the present invention are as follows: the present invention utilizes the heated hot knife substrate to quickly melt the EVA, thereby reducing the bonding effect and toughness of the packaging material, which is beneficial to the planing of the back panel by the hot knife blade, reducing power consumption, and utilizing coarse rolling and fine rolling to press the photovoltaic components, thereby ensuring the stability of planing, reducing the limitations of processing the photovoltaic components, and also being able to process broken and bent photovoltaic panels, thereby improving the benefits of recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a structural schematic diagram of a transverse lifting frame device;

[0029] Figure 3 It is a schematic diagram of the structure of the hot knife disassembly device;

[0030] Figure 4 for Figure 3 a top view of the structure shown;

[0031] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle;

[0032] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure at the middle BB;

[0033] Figure 7 It is a structural schematic diagram of a double-screw transmission device;

[0034] Figure 8 It is a structural schematic diagram of a double-slide guide device;

[0035] Fig. 9 It is a left side view of the present invention;

[0036] Fig.10 It is a front view of the present invention.

[0037] In the figure:

[0038] 1. Transverse lifting frame device; 101. Base plate; 102. Reinforcement plate; 103. Screw through hole; 104. Adjustment gasket; 105. Base plate wiring hole; 106. Lower mounting plate; 107. Middle mounting plate; 108. Upper mounting plate; 109. Ball screw pair; 110. Guide rod; 111. Ball screw motor;

[0039] 2. Hot knife disassembly device; 201. Hot knife frame; 202. Hot knife frame wiring hole; 203. Hot knife frame mounting hole group; 204. Long bolt; 205. Short bolt; 206. Hot knife blade; 207. Hot knife base; 208. Heating rod; 209. Rolling mounting plate; 210. Fine rolling; 211. Coarse rolling;

[0040] 3. Double-screw transmission device; 301. Double-screw motor; 302. Screw transmission pair; 303. Coupling; 304. Screw nut; 305. Screw rod body; 306. Screw fixing seat;

[0041] 4. Double slide rail guide device; 401. Auxiliary mounting plate; 402. Upper silver slider; 403. Slide rail; 404. Long horizontal support beam; 405. Short support beam; 406. Adjusting welding plate;

[0042] 5. Workbench; 501. Work platform; 502. High bottom beam; 503. Wide bottom beam; 504. Long bottom beam; 505. Building beam; 506. Angle bracket;

[0043] 6. Lifting synchronous belt device; 601. Conveying motor; 602. Rubber conveyor belt; 603. Thin cylinder; 604. Cylinder mounting plate; 605. Four-claw welding disc; 606. Conveyor belt shaft; 607. Conveyor belt bracket. DETAILED DESCRIPTION

[0044] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0045] Embodiment 1:

[0046] like Figure 1-10 As shown, the present invention is an overall disassembly device for scrapped photovoltaic module back panels, comprising:

[0047] The workbench 5 includes a work platform 501 and a base for supporting the work platform 501. The base includes four high bottom beams 502, two wide bottom beams 503, two long bottom beams 504 and two building beams 505. The beams are reinforced and installed by angle brackets 506. The size of the workbench 5 meets the maximum size of common scrapped photovoltaic modules on the market, so laminates of different sizes can be processed. When building the platform, the flatness and rigidity of the work platform 501 need to be ensured as much as possible;

[0048] The hot knife disassembly device 2 is slidably installed above the workbench 5 along the X-axis direction (i.e., the length direction of the photovoltaic module) and can be raised and lowered along the Z-axis direction. The hot knife disassembly device 2 includes a hot knife frame 201, and two hot knife bases 207 are symmetrically installed on the hot knife frame 201 through long bolts 204. A hot knife blade 206 is fixed to the bottom of each hot knife base 207 through a short bolt 205. The blade has high hardness and rigidity, and its angle can be set to 30°. The angle of the blade can be adjusted by installing an angle shim according to actual conditions to achieve the best cutting effect.

[0049] A rough roller 211 is installed on the outside of each hot knife base 207, and a fine roller 210 is installed between the two hot knife bases 207. The rough roller 211 and the fine roller 210 are installed on the roller mounting plates 209 located at both ends of the hot knife frame 201, which are mainly used to flatten various photovoltaic panels and maintain the stability of the panels to reduce relative displacement and increase friction. The three rollers are kept horizontal, and the blade of the hot knife blade 206 is located below the roller. A number of heating rods 208 are installed on each hot knife base 207. The heating rods 208 need to keep the temperature of the hot knife blade 206 between 105-135°C to ensure that the packaging material EVA therein is melted, but the temperature is guaranteed not to cause the backplane to react. The power cord of the heating rod 208 can be combed and placed through two symmetrical substrate wiring holes 105 and the hot knife frame wiring holes 202. The hot knife base 207, the hot knife blade 206, the rough roller 211 and the fine roller 2 10 are extended along the Y-axis direction (i.e., the width direction of the photovoltaic module); during disassembly, the hot knife disassembly device 2 is driven to move along the X-axis direction, and the rough roller 211 located at the front end of the movement direction is always pressed on the backboard to be peeled off, so that the photovoltaic module is pressed between the rough roller 211 and the working flat plate 501 to fix the photovoltaic module, and the hot knife blade 206 located at the rear end extends between the backboard and the battery cell (i.e., the EVA part of the packaging material), and the heated hot knife blade 206 quickly melts the EVA to peel off the backboard, and at the same time, the fine roller 210 and another rough roller 211 behind the hot knife blade 206 in a working state also press the photovoltaic module to further fix the photovoltaic module, and the cooperation of the rough roller 211 and the fine roller 210 can avoid the movement of the position of the photovoltaic module caused by the thrust generated on the backboard when the hot knife blade 206 peels off the backboard, and the broken or bent photovoltaic module can also be fixed by the cooperation of the two to provide the hot knife blade 206 with work.

[0050] A transverse lifting frame device 1 for driving the hot knife disassembling device 2 to lift is installed above the workbench 5. The transverse lifting frame device 1 includes a base plate 101, a ball screw pair 109 and a ball screw motor 111 for driving the ball screw pair 109. The base plate 101 is spliced ​​with four reinforcing plates 102 to improve the stability, structural rigidity and strength of the base plate 101. Two symmetrical base plate wiring holes 105 are provided on the base plate 101 to correspond to the hot knife frame wiring holes 202. Four groups of screw through holes 103 are provided on the side of the base plate 101 to pass through two screw rod bodies 305 and install two screw nuts 304. A middle mounting plate 107 is fixed on the base plate 101. The nut of the ball screw pair 109 is embedded in the middle mounting plate 107. The middle mounting plate 107 is inserted through a guide rod sleeve Two guide rods 110 are provided, and the two guide rods 110 are distributed on both sides of the screw rod. An upper mounting plate 108 is fixed to the top of the guide rod 110 through a flange, and a lower mounting plate 106 is fixed to the bottom of the guide rod 110 through a fixing sleeve. The upper mounting plate 108, the lower mounting plate 106 and the two guide rods 110 form a frame. The lower mounting plate 106 is rotatably connected with the screw rod of the ball screw pair 109 through a bearing and the lower mounting plate 106 is located below the top plate of the hot knife frame 201. The two are threadedly connected through the hot knife frame mounting hole group 203, and the ball screw motor 111 is installed on the upper mounting plate 108; the ball screw motor 111 is driven to rotate the screw rod, and because the nut is embedded in the middle mounting plate 107 and fixed, the screw rod can move up and down, driving the lower mounting plate 106 to move, thereby driving the frame and the hot knife disassembly device 2 to move up and down.

[0051] A double-screw transmission device 3 for driving the hot knife disassembling device 2 to move along the X-axis direction is installed above the workbench 5. The double-screw transmission device 3 includes a double-screw motor 301. The output end of the double-screw motor 301 is connected to two screw transmission pairs 302. The base plate 101 is installed on two screw nuts 304 on the two screw transmission pairs 302. Two couplings 303 are installed between the two screw transmission pairs 302, and a coupling 303 is installed between the double-screw motor 301 and one of the screw transmission pairs 302. The screw rod body 305 passes through the screw through hole 103 in the transverse lifting frame device 1, and the two screw nuts 304 are fixedly installed on the base plate 101.

[0052] A double-slide guide device 4 is installed above the workbench 5. The double-slide guide device 4 includes two long horizontal beams 404 mounted on the workbench 5. The long horizontal beams 404 are reinforced and welded by adjusting welding plates 406. The two long horizontal beams 404 extend along the X-axis direction and are paved with two slide rails 403. An upper silver slider 402 matching the slide rail 403 is installed at the bottom of the base plate 101, and an adjusting gasket 104 is provided between the upper silver slider 402 and the base plate 101. The upper silver slider 402 is slidably installed on the slide rail 403. One of the two slide rails 403 is a fixed end that cannot be adjusted, and the other can be adjusted in height by a gasket to ensure the level of the hot knife disassembly device 2. The upper silver slider 402 also needs to be adjusted in height to ensure the level.

[0053] Four short support beams 405 are welded to the head and tail of the two long horizontal support beams 404. An auxiliary mounting plate 401 is respectively mounted on the two corresponding short support beams 405 on the two long horizontal support beams 404. The auxiliary mounting plate 401 extends along the Y-axis direction. The two long horizontal support beams 404 and the two auxiliary mounting plates 401 form a frame structure. One of the two auxiliary mounting plates 401 is used to fix the double-screw motor 301 and the screw transmission pair 302, and the other is used to install the fixed end of the screw. The two screw rod bodies 305 pass through one of the auxiliary mounting plates 401 and are inserted into the other auxiliary mounting plate 401 through two screw fixing seats 306.

[0054] The lifting synchronous belt device 6 is used to transfer the photovoltaic components on it to the working platform 501 or transfer the photovoltaic components on the working platform 501 to it. The lifting synchronous belt device 6 includes two rubber conveyor belts 602 extending along the X-axis direction and a thin cylinder 603 used to drive it to rise and fall. The working platform 501 is provided with two through grooves for the two rubber conveyor belts 602 to pass through; wherein the thin cylinder 603 is installed on the cylinder mounting plate 604, and the cylinder mounting plate 604 is installed on two building beams 505. A four-claw welding disk 605 is welded on the output end of the thin cylinder 603, and a conveyor belt bracket 607 is welded on the four-claw welding disk 605. The rubber conveyor belt 602, the conveyor belt shaft 606 and the conveying motor 601 are all installed on the conveyor belt bracket 607, and the conveying motor 601 drives the rubber conveyor belt 602 for conveying. Since the mass of the photovoltaic panel after removing the frame and the junction box is not large, approximately between 20-30 kg, a thin cylinder 603 and a conveying motor 601 with a smaller load can be selected.

[0055] A method for using the above-mentioned overall disassembly device for scrapped photovoltaic module back panels comprises the following steps:

[0056] A method for using the above-mentioned overall disassembly device for scrapped photovoltaic module back panels comprises the following steps:

[0057] S1: transporting and placing, the photovoltaic module back panel with the junction box and frame removed in the previous process is facing upwards, and is transported by staff or a conveyor belt and placed in a designated position on the work platform 501.

[0058] S2: Positioning movement, driving the transverse lifting frame device 1 to move along the X-axis direction to the edge or a suitable position of the photovoltaic module, and then driving the hot knife disassembly device 2 to move down to the back plate of the photovoltaic module;

[0059] S3: Heating the blade body, energizing the heating rod 208 to heat the blade body to a specified temperature;

[0060] S4: Planing off the back sheet, and laterally moving the transverse lifting frame device 1 and the hot knife disassembly device 2 through the double-screw transmission device 3, so as to peel off the back sheet from the photovoltaic module;

[0061] S5: cleaning and returning to the original position, collecting and processing the peeled backplane, and then lifting the hot knife disassembly device 2 and returning the transverse lifting frame device 1 to the original position;

[0062] S6: transport out, lift the lifting synchronous belt device 6 to transport the processed photovoltaic components out for the next step of processing.

[0063] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An overall disassembly device for scrapped photovoltaic module backsheets, characterized in that: include: A workbench (5), comprising a work plate (501) for carrying a photovoltaic module; A hot knife disassembly device (2) is slidably mounted above the workbench (5) along the X-axis direction and can be raised and lowered along the Z-axis direction. The hot knife disassembly device (2) comprises a hot knife frame (201). Two hot knife bases (207) are symmetrically mounted on the hot knife frame (201). A hot knife blade (206) is mounted at the bottom of each hot knife base (207) and a plurality of heating rods (208) are mounted inside each hot knife base (207). A rough roller (211) is mounted on the outside of each hot knife base (207) and a fine roller (210) is mounted between the two hot knife bases (207). The hot knife bases (207), the hot knife blades (206), the rough roller (211) and the fine roller (210) all extend along the Y-axis direction. and a lifting synchronous belt device (6) for transferring the photovoltaic components thereon to the working flat plate (501) or transferring the photovoltaic components on the working flat plate (501) thereon; The lifting synchronous belt device (6) comprises two rubber conveyor belts (602) extending along the X-axis direction and a thin cylinder (603) for driving the two rubber conveyor belts to be lifted and lowered. The working plate (501) is provided with two through grooves for the two rubber conveyor belts (602) to pass through. A transverse lifting frame device (1) for driving the hot knife disassembling device (2) to move along the Z-axis direction is installed above the workbench (5). The transverse lifting frame device (1) comprises a base plate (101), a ball screw pair (109) and a ball screw motor (111) for driving the ball screw pair (109). A middle mounting plate (107) is fixed on the base plate (101). The nut of the ball screw pair (109) is embedded in the middle mounting plate (107). Two guide rods (110) are inserted in the middle mounting plate (107). An upper mounting plate (108) is fixed on the top of the guide rod (110). A lower mounting plate (106) for mounting the hot knife disassembling device (2) is fixed on the bottom of the guide rod (110). The lower mounting plate (106) is rotatably connected to the screw of the ball screw pair (109) via a bearing.

2. The overall disassembly device for scrapped photovoltaic module backsheet according to claim 1, characterized in that: A double-screw transmission device (3) for driving the hot knife disassembling device (2) to move along the X-axis direction is installed above the workbench (5), the double-screw transmission device (3) comprising a double-screw motor (301), the output end of the double-screw motor (301) being transmission-connected to two screw transmission pairs (302), and the base plate (101) being installed on two screw nuts (304) on the two screw transmission pairs (302).

3. The overall disassembly device for scrapped photovoltaic module backsheet according to claim 2, characterized in that: A double-slide guide device (4) is installed above the workbench (5), and the double-slide guide device (4) includes two long horizontal support beams (404) mounted on the workbench (5), and the two long horizontal support beams (404) both extend along the X-axis direction and are provided with two slide rails (403), and an upper silver slider (402) matching the slide rail (403) is installed at the bottom of the base plate (101), and the upper silver slider (402) is slidably mounted on the slide rail (403).

4. The overall disassembly device for scrapped photovoltaic module backsheets according to claim 3 is characterized by: The double-slide guide device (4) further comprises two auxiliary mounting plates (401), both of which extend along the Y-axis direction and are respectively located at the head and tail of the long cross beam (404), and the double-screw transmission device (3) is mounted on the two auxiliary mounting plates (401).

5. The overall disassembly device for scrapped photovoltaic module backsheet according to claim 1, characterized in that: The workbench (5) further comprises four high bottom beams (502), two wide bottom beams (503), two long bottom beams (504) and two building beams (505), and adjacent beams are reinforced by corner brackets (506).

6. The overall disassembly device for scrapped photovoltaic module backsheets according to claim 1, characterized in that: The temperature of the hot knife blade (206) in working state is 105-135°C.

7. A method for using a device for dismantling a scrapped photovoltaic module back sheet according to any one of claims 1 to 6, characterized in that: S1: transporting and placing, the photovoltaic module back panel with the junction box and frame removed in the previous process is facing upwards, and is transported by staff or a conveyor belt and placed at a designated position on the work platform (501); S2: Positioning movement, driving the transverse lifting frame device (1) to move along the X-axis direction to the edge or a suitable position of the photovoltaic module, and then driving the hot knife disassembly device (2) to move down to the back plate of the photovoltaic module; S3: heating the blade body, energizing the heating rod (208) to heat the blade body to a specified temperature; S4: Planing off the back sheet, and laterally moving the transverse lifting frame device (1) and the hot knife disassembly device (2) through the double-screw transmission device (3), thereby peeling the back sheet off the photovoltaic module; S5: cleaning and returning to the original position, collecting and processing the peeled backing plate, and then lifting the hot knife disassembly device (2) and returning the transverse lifting frame device (1); S6: transport out for processing, lifting the lifting synchronous belt device (6) to transport the processed photovoltaic components out for the next step of processing.

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