Recycling system and recycling method of photovoltaic module
By separating different components of photovoltaic modules through abrasive jetting and crushing and screening technology, the environmental pollution and material waste problems in the process of waste photovoltaic module treatment are solved, and efficient resource recycling and reuse are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2026-03-10
AI Technical Summary
In the existing technology, the disposal methods of waste photovoltaic modules cause environmental pollution and serious waste of materials, and fail to effectively recycle and utilize valuable module materials.
A spraying unit sprays abrasive onto the surface of the photovoltaic module to peel off different components, which are then separated by a series of crushing and screening units, including a spraying unit, a crushing unit, and a screening unit, to form and separate fragments, particles, and materials, respectively.
It achieves efficient separation and recycling of photovoltaic modules, reduces environmental pollution, improves resource recycling rate, and recovers valuable materials such as silver powder, copper granules and silicon powder.
Smart Images
Figure CN121624196A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of photovoltaic module recycling, and in particular to a photovoltaic module recycling system and method. BACKGROUND
[0002] As photovoltaic modules reach their service life, there will be more and more discarded modules. The aluminum frame, silicon cells, copper, tin, and precious metal silver in the photovoltaic modules have considerable recycling value and economic profit.
[0003] In related technologies, discarded photovoltaic modules are directly buried or incinerated, which pollutes the ecological environment because the backboard material in the photovoltaic modules contains a large amount of fluorine elements. SUMMARY
[0004] To overcome the deficiencies in the prior art, the present application provides a photovoltaic module recycling system and method.
[0005] In a first aspect, the present application provides a photovoltaic module recycling system, comprising: a spraying unit, a first crushing unit, a second crushing unit, a first screening unit, and a second screening unit. The spraying unit is configured to spray abrasive material at a preset angle to a first surface of a photovoltaic module, so that the first surface forms fragments and separates from the photovoltaic module. The first crushing unit is connected to the spraying unit and is configured to crush the fragments to form first particles. The second crushing unit is connected to the first crushing unit and is configured to crush the first particles to form second particles and third particles. The first screening unit is connected to the second crushing unit and is configured to screen the second particles to screen out a first mixture. The second screening unit is connected to the first screening unit and is configured to screen the first mixture to screen out a first material and a second material.
[0006] In combination with the first aspect, in a possible implementation, the spraying unit comprises a plurality of nozzles arranged along a first preset direction. The nozzles are at the preset angle to the first surface, and the preset angle is 45°. The nozzles move along a second preset direction to spray the abrasive material onto the first surface. The second preset direction is perpendicular to the first preset direction.
[0007] With reference to the first aspect, in a possible implementation of the first aspect, the first surface has an edge region, the edge region includes: a first edge and a second edge, the first edge is opposite to the second edge, the first edge is arranged along the first preset direction, the second edge is opposite to the first edge, the second edge is arranged along the second preset direction, and the second edge is connected with the first edge, the length of the nozzle moving along the second preset direction is equal to the length of the second edge along the second preset direction.
[0008] With reference to the first aspect, in a possible implementation of the first aspect, the recycling system of the photovoltaic module further includes: a third screening unit, the third screening unit is connected with the second crushing unit, the third screening unit has a screening grading region, and the screening grading region is used for screening the third particles to screen out a third material and a fourth material.
[0009] With reference to the first aspect, in a possible implementation of the first aspect, the third screening unit includes: a classifier and a collector, the classifier is connected with the second crushing unit, the screening grading region is arranged in the classifier, the collector is connected with the classifier, the classifier is used for separating the third material and the fourth material, and the fourth material falls into the collector.
[0010] With reference to the first aspect, in a possible implementation of the first aspect, the first screening unit has a screen hole, the screen hole has a preset diameter, the first screening unit makes the second mixture pass through the screen hole at a preset vibration frequency, and the first mixture and the second mixture are separated.
[0011] With reference to the first aspect, in a possible implementation of the first aspect, the second screening unit includes: a sorting machine, the sorting machine is connected with the first screening unit, and the sorting machine is used for screening the first mixture to sort out the first material and the second material.
[0012] With reference to the first aspect, in a possible implementation of the first aspect, the recycling system of the photovoltaic module further includes: a first conveying unit, the first conveying unit is connected with the spraying unit, the first conveying unit is used for conveying the photovoltaic module to the spraying unit, and the first surface is attached to the first conveying unit.
[0013] The second aspect of the present application provides a recycling method of a photovoltaic module, which adopts the recycling system of the photovoltaic module described above, and the recycling method of the photovoltaic module includes the following steps: obtaining a photovoltaic module and placing the photovoltaic module in a spraying unit to separate glass and a back plate, driving the back plate to move so that the back plate sequentially passes through a first crushing unit, a second crushing unit, a first screening unit and a second screening unit to obtain gravel and copper.
[0014] In conjunction with the second aspect, in one possible implementation, while a portion of the backplate passes through the second crushing unit into the first screening unit, a portion of the backplate passes through the second crushing unit into the third screening unit to obtain silver powder and silicon powder.
[0015] Compared with the prior art, the beneficial effects of this application are:
[0016] The photovoltaic module recycling system provided in this application sprays abrasive material onto the first surface of the photovoltaic module using a spraying unit to peel the first surface off the photovoltaic module. The resulting fragments are then separated by a first crushing unit, a second crushing unit, a first screening unit, and a second screening unit to obtain a first material and a second material, thereby improving the recycling rate of the photovoltaic module. Compared to treating photovoltaic modules by landfilling or incineration, this application separates different components of the photovoltaic module through abrasive spraying. On the one hand, this effectively reduces environmental pollution; on the other hand, the photovoltaic module processed by the recycling system described in this application yields different materials, reducing material waste and improving resource recycling rate. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 A side view of the photovoltaic module recycling system is shown.
[0019] Figure 2 A top view of the photovoltaic module recycling system is shown.
[0020] Figure 3 A schematic diagram of the nozzle structure of the photovoltaic module recycling system is shown;
[0021] Figure 4 A schematic diagram of a photovoltaic module recycling method is shown.
[0022] Explanation of key component symbols:
[0023] 100 - Spraying unit; 110 - Nozzle; 200 - First crushing unit; 210 - First crusher; 300 - Second crushing unit; 310 - Second crusher; 400 - First screening unit; 410 - Circular vibrating screen; 500 - Second screening unit; 510 - Sorter; 600 - First conveying unit; 700 - Third screening unit; 710 - Grader; 720 - Collector; 800 - Dust collector; 900 - Photovoltaic module; 910 - First side; 920 - Second side. Detailed Implementation
[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0025] 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.
[0026] 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 one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0027] 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 or an electrical 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.
[0028] 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.
[0029] Example 1
[0030] Please see Figure 1 This application provides a photovoltaic module recycling system, comprising: a spraying unit 100, a first crushing unit 200, a second crushing unit 300, a first screening unit 400, and a second screening unit 500. The spraying unit 100 sprays abrasive material at a preset angle onto a first surface of the photovoltaic module 900, causing the first surface to form fragments that separate from the photovoltaic module 900. The first crushing unit 200 is connected to the spraying unit 100 and crushes the fragments to form first particles. The second crushing unit 300 is connected to the first crushing unit 200 and crushes the first particles to form second and third particles. The first screening unit 400 is connected to the second crushing unit 300 and screens the second particles to separate a first mixture. The second screening unit 500 is connected to the first screening unit 400 and screens the first mixture to separate first and second materials. The abrasive is sprayed onto the first surface of the photovoltaic module 900 by the spraying unit 100 to peel the first surface off the photovoltaic module 900. The resulting fragments are then sieved and separated by the cooperation of the first crushing unit 200, the second crushing unit 300, the first sieving unit 400, and the second sieving unit 500 to obtain the first material and the second material, thereby improving the recovery rate of the photovoltaic module 900. Compared with the disposal of photovoltaic modules 900 by landfilling or incineration, this application separates different components of the photovoltaic module 900 by abrasive spraying. On the one hand, this effectively reduces environmental pollution; on the other hand, the photovoltaic module 900 processed by the photovoltaic module recycling system of this application yields different materials, reducing material waste and improving the recycling rate of resources.
[0031] In some embodiments, the photovoltaic module 900 has a first surface and a second surface disposed opposite to each other. The first surface is a backsheet surface. The second surface is a glass surface.
[0032] Please see Figure 1 and Figure 2 In some embodiments, the photovoltaic module recycling system further includes a first conveying unit 600. The first conveying unit 600 is disposed on a supporting surface, on the side of the spraying unit 100 opposite to the first crushing unit 200, and connected to the spraying unit 100. The first conveying unit 600 is used to convey the photovoltaic module 900 onto the spraying unit 100. The first surface is in contact with the first conveying unit 600.
[0033] Please see Figure 1 and Figure 3 In some embodiments, the spraying unit 100 includes a plurality of nozzles 110 arranged along a first preset direction. The nozzles 110 are at the preset angle to the first surface. The preset angle is 45°. The nozzles 110 move along a second preset direction to spray the abrasive onto the first surface. The second preset direction is perpendicular to the first preset direction.
[0034] In some embodiments, the first conveying unit 600 is a roller conveyor line, the first conveying unit 600 is arranged along the second preset direction, and the first conveying unit 600 is used to convey the photovoltaic module 900 along the second preset direction.
[0035] In some embodiments, the blasting unit 100 is a sandblasting device. The abrasive is gravel with a particle size of 10 to 20 mesh to avoid damage to the glass during blasting, thus protecting the integrity of the glass, improving the recycling quality and efficiency of the photovoltaic module 900, and allowing the intact glass to be reused, thereby increasing the recycling rate of resources.
[0036] In some embodiments, the nozzle 110 sprays the abrasive onto the first surface under preset pressure and sealing conditions to separate the backplate from the glass and generate the fragments. The preset pressure is 0.8 MPa.
[0037] In some embodiments, the fragments include backplane fragments and silicon substrate fragments.
[0038] In some embodiments, the first surface has an edge region. See also Figure 3The edge region includes a first edge 910 and a second edge 920. Two first edges 910 are arranged opposite each other along a first preset direction. Two second edges 920 are arranged opposite each other along a second preset direction, and the second edges 920 are connected to the first edges 910. The length by which the nozzle 110 moves along the second preset direction is equal to the length of the second edge 920 along the second preset direction.
[0039] In some embodiments, the first side 910 is the short side, and the second side 920 is the long side. The nozzle 110 sprays from one of the first sides 910 to the other first side 910 along the second preset direction to complete sandblasting.
[0040] In some embodiments, the photovoltaic module recycling system further includes a second conveying unit and a third conveying unit. The second conveying unit is connected to the spraying unit 100 and is disposed between the spraying unit 100 and the first crushing unit 200. The second conveying unit is used to convey glass. The third conveying unit is disposed between the spraying unit 100 and the first crushing unit 200 and connects the spraying unit 100 and the first crushing unit 200. The third conveying unit is used to convey backsheet fragments, silicon board fragments, and sandblasting gravel to the first crushing unit 200.
[0041] In some embodiments, the second conveying unit is located on the side of the third conveying unit away from the support surface, the second conveying unit is a transverse roller, and the second conveying unit is used to convey glass along the second preset direction.
[0042] In some embodiments, the third conveying unit is a belt conveyor line, and the third conveying unit is used to convey backplate fragments, silicon plate fragments and sandblasting gravel along the first preset direction.
[0043] In some embodiments, the size of the backplate fragments and silicon plate fragments on the third conveying unit is 1cm to 10cm.
[0044] Please see Figure 1 and Figure 2 In some embodiments, the first crushing unit 200 includes a first crusher 210. The first crusher 210 is used for the initial crushing of backplate fragments and silicon plate fragments.
[0045] In some embodiments, the first particle has a first preset size. The second particle has a second preset size. The first preset size is 5 mm. The first preset size is larger than the second preset size.
[0046] Please see Figure 1 and Figure 2 In some embodiments, the second pulverizing unit 300 includes a second pulverizer 310. The second pulverizer 310 is an ultrafine pulverizer, and the second pulverizer 310 has a pulverizing and grading zone. The second pulverizing and grading zone is used to separate the second particles from the third particles.
[0047] In some embodiments, the second particles comprise the first mixture and the second mixture. The first mixture comprises the first material and the second material. The second mixture comprises EVA adhesive and backing plate fragments.
[0048] Please see Figure 1 and Figure 2 In some embodiments, the first screening unit 400 includes a circular vibrating screen 410. The circular vibrating screen 410 includes a ton bag. The circular vibrating screen 410 has screen holes with a preset diameter. The circular vibrating screen 410 vibrates at a preset frequency to allow the second mixture to pass through the screen holes into the ton bag, and to separate the first mixture from the second mixture, with the first mixture entering the second screening unit 500.
[0049] In some embodiments, the preset diameter is 60 mesh. The preset vibration frequency is 960 times / min.
[0050] Please see Figure 1 and Figure 2 In some embodiments, the second screening unit 500 includes a separator 510. The separator 510 is connected to the circular vibrating screen 410 via a pipe, and the separator 510 is used to screen the first mixture according to the density difference of the materials to separate the first material from the second material.
[0051] In some embodiments, the first material is copper granules, and the particle size of the copper granules is 0.5 mm to 1 mm, and the second material is gravel.
[0052] Please see Figure 1 and Figure 2 In some embodiments, the photovoltaic module recycling system further includes a third screening unit 700. The third screening unit 700 is connected to the second crusher 310 via a pipe, and is located on the side of the second crusher 310 opposite to the third conveying unit. The third screening unit 700 has a screening and grading zone. The screening and grading zone is used to screen the third particles to separate the third material from the fourth material.
[0053] Please see Figure 1 and Figure 2In some embodiments, the third screening unit 700 includes a classifier 710 and a collector 720. The classifier 710 is connected to the second crusher 310 via a pipe, and the classifier 710 is located on the side of the separator 510 away from the second crusher 310. The screening and grading zone is disposed in the classifier 710. The collector 720 is a cyclone collector 720, located on the side of the classifier 710 away from the second screening unit 500, and is connected to the classifier 710 via a pipe. The classifier 710 is used to separate the third material from the fourth material, and the fourth material falls into the collector 720.
[0054] In some embodiments, the photovoltaic module recycling system further includes a dust collector 800. The dust collector 800 is a pulse dust collector 800, which is disposed on the support surface and located on the side of the collector 720 away from the classifier 710. The dust collector 800 and the collector 720 are connected by a pipe.
[0055] In some embodiments, the second pulverizer 310 has a first outlet end and a second outlet end. The first outlet end is connected to the circular vibrating screen 410 via a pipe. The second outlet end is connected to the classifier 710 via a pipe.
[0056] In some embodiments, the second pulverizer 310 includes: a grinding block, a gear ring, and a first classifying wheel. The pulverizing and classifying zone is located in the first classifying wheel. The grinding block and the gear ring cooperate to pulverize the first particles. The resulting second particles and the third particles are screened by the first classifying wheel. The second particles are discharged from the second pulverizer 310 through the first outlet end and enter the circular vibrating screen 410. The third particles are discharged from the second pulverizer 310 through the second outlet end and enter the classifier 710.
[0057] In some embodiments, the particle size of the third particle is smaller than that of the second particle. The rapidly rotating grinding block and the gear ring generate a combination of forces, including collision, friction, and shearing, to crush the first particle.
[0058] In some embodiments, the classifier 710 includes a fan, a second classifying wheel, and a cylinder. The cylinder has a first end and a second end. The first end is located at the end of the cylinder near the supporting surface. The second end is located at the end of the first end away from the supporting surface. Under the centripetal force of the fan, the third particles in the cylinder move from the first end to the second end with the rising airflow. Under the strong centrifugal force generated by the rapidly rotating second classifying wheel, the coarse and fine particles in the third particles are separated. The fine particles enter the collector 720 or the dust collector 800 through the second end, while the coarse particles descend to the first end and are discharged from the first end. The discharged coarse particles are the third material.
[0059] In some embodiments, the third material is silver powder, and the third material has a third preset size. The third preset size is 2µm to 150µm.
[0060] In some embodiments, the photovoltaic module recycling system further includes an induced draft fan. The induced draft fan is connected to the dust collector 800 via a pipe.
[0061] In some embodiments, the fourth material is silicon powder, and the fourth material has a fourth preset size. The fourth preset size is 2µm to 150µm. During the pulverizing process of the second pulverizer 310, the generated ultrafine powder enters the dust collector 800 and is filtered through a bag filter. The filtered purified air is discharged by the induced draft fan, which can effectively control the diffusion of dust and reduce the impact on the environment.
[0062] The abrasive is sprayed onto the first surface through the nozzle 110 to separate the backplate from the glass, obtaining intact glass. After processing by the first crusher 210, the second crusher 310, the circular vibrating screen 410, the sorter 510, the classifier 710, and the collector 720, in addition to EVA particles and silicon powder, high-value silver powder and copper particles can also be obtained. Furthermore, the dust collector 800 and the induced draft fan effectively control the spread of dust during the recycling process of the photovoltaic module 900. The photovoltaic module recycling system of this application, on the one hand, can environmentally recycle the photovoltaic module 900, reducing its impact on the environment; on the other hand, it can efficiently recycle the photovoltaic module 900 and obtain various recyclables, improving the recycling rate of the photovoltaic module 900.
[0063] Example 2
[0064] Please see Figure 4This application provides a method for recycling photovoltaic modules. The method uses the photovoltaic module recycling system described in Embodiment 1 above, and includes the following steps:
[0065] S100: Obtain the photovoltaic module and drive the photovoltaic module to move into the spraying unit to separate the glass from the backsheet and obtain fragments and glass;
[0066] S200: Drive the fragments to move so that the fragments are crushed by the first crusher to obtain the first particles;
[0067] S300: Drive the first particle to move so that the first particle is crushed by the second crusher to obtain the second particle and the third particle;
[0068] S400: The second particle passes through a circular vibrating screen and a separator in sequence to obtain EVA glue, backing plate fragments, copper granules and gravel. The third particle passes through a classifier and a collector in sequence to obtain silver powder and silicon powder.
[0069] In some embodiments, the photovoltaic module in S100 is a scrapped module glass lamination after the aluminum frame has been removed.
[0070] In some embodiments, the photovoltaic module in S100 is moved to the spraying unit via a roller conveyor line, and the spraying unit sprays abrasive into the back sheet of the photovoltaic module through a nozzle to separate the back sheet from the glass and obtain back sheet fragments and complete glass.
[0071] In some embodiments, the fragments in S200 are moved to the first crusher via a belt conveyor for crushing.
[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0073] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A recycling system for photovoltaic modules, characterized by, The photovoltaic module recycling system comprises: a spraying unit for spraying abrasive material to a first surface of a photovoltaic module at a preset angle, so that the first surface forms a fragment and separates from the photovoltaic module; a first crushing unit connected with the spraying unit, and the first crushing unit is used for crushing the fragment to form a first particle; a second crushing unit connected with the first crushing unit, and the second crushing unit is used for crushing the first particle to form a second particle and a third particle; a first screening unit connected with the second crushing unit, and the first screening unit is used for screening the second particle to screen out a first mixture; a second screening unit connected with the first screening unit, and the second screening unit is used for screening the first mixture to screen out a first material and a second material.
2. The recycling system of photovoltaic modules according to claim 1, characterized in that, The spraying unit comprises: a plurality of nozzles arranged along a first preset direction, the nozzles are at the preset angle with the first surface, and the preset angle is 45°, the nozzles move along a second preset direction to spray the abrasive material to the first surface, and the second preset direction is perpendicular to the first preset direction.
3. The recycling system of photovoltaic modules according to claim 2, characterized in that, The first surface has an edge area, and the edge area comprises: two oppositely arranged first edges arranged along the first preset direction; two oppositely arranged second edges arranged along the second preset direction, and the second edges are connected with the first edges, and the length of the nozzles moving along the second preset direction is equal to the length of the second edges along the second preset direction.
4. The recycling system of photovoltaic modules according to claim 1, characterized in that, The photovoltaic module recycling system further comprises: a third screening unit connected with the second crushing unit, the third screening unit has a screening grading area for screening the third particle to screen out a third material and a fourth material.
5. The recycling system of photovoltaic modules according to claim 4, characterized in that, The third screening unit comprises: a grader connected with the second crushing unit, and the screening grading area is arranged in the grader; a collector connected with the grader, the grader is used for separating the third material and the fourth material, and the fourth material falls into the collector.
6. The recycling system of photovoltaic modules according to claim 1, characterized in that, The first screening unit has a screen hole with a preset diameter, the first screening unit makes the second mixture pass through the screen hole at a preset vibration frequency, and separates the first mixture and the second mixture.
7. The recycling system of photovoltaic modules according to claim 6, characterized in that, The second screening unit comprises: a sorter connected with the first screening unit, and the sorter is used for screening the first mixture to separate the first material and the second material.
8. The recycling system of photovoltaic modules according to any of claims 1-7, characterized in that, The photovoltaic module recycling system further comprises: a first conveying unit connected with the spraying unit, the first conveying unit is used for conveying the photovoltaic module to the spraying unit, and the first surface is attached to the first conveying unit.
9. A method of recycling a photovoltaic module, characterized by, The photovoltaic module recycling method using the photovoltaic module recycling system of any one of claims 1-8 comprises the following steps: The photovoltaic module is obtained, and the photovoltaic module is placed in a spraying unit to separate the glass from the back plate; the back plate is driven to move so as to pass through a first crushing unit, a second crushing unit, a first screening unit and a second screening unit in sequence to obtain the sand and the copper pellet.
10. The recycling method of a photovoltaic module according to claim 9, characterized in that, Part of the fragments enters the third screening unit through the second crushing unit while part of the fragments enters the first screening unit through the second crushing unit to obtain the silver powder and the silicon powder.