Device and method for purifying battery piece in waste photovoltaic panel

Abstract

The invention discloses a device and method for purifying a battery piece in a waste photovoltaic panel, and the device comprises a cleaning assembly which comprises a first cleaning pool, a second cleaning pool and a third cleaning pool, the first cleaning pool and the third cleaning pool are internally provided with demineralized water, and the second cleaning pool is internally provided with a mixture of a surfactant, ethanol and a defoaming agent with a certain concentration; the liquid circulation assembly is arranged on the cleaning assembly, and a liquid pumping unit is installed on the liquid circulation assembly; the drying assembly is arranged on one side of the cleaning assembly; and the transverse moving assembly is arranged above the cleaning assembly and the drying assembly, and a battery piece placing assembly is installed on the transverse moving assembly. By arranging the cleaning pool, the loss of the battery piece in the cleaning process can be avoided in the cleaning and purifying process of the battery piece, and the battery piece is thoroughly cleaned; and secondly, the liquid circulating assembly is matched with the liquid pumping unit, so that recycling of the cleaning liquid is achieved, and water resource consumption in the cleaning process is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of purifying cells in waste photovoltaic panels, and in particular relates to a device and method for purifying cells in waste photovoltaic panels. Background Art

[0002] China started the industrialization of solar photovoltaic in 2000, and by the end of 2023, the installed capacity of solar power generation will be about 610GW. It is estimated that by 2030, the number of photovoltaic modules in China that will be scrapped will reach about 1.7 million tons, and will continue to increase over time. The overall scrapping and recycling of photovoltaic modules is coming.

[0003] Photovoltaic modules are composed of multiple solar cells connected in series and parallel. The main structure includes encapsulation glass, EVA film, cells and backplane, etc. Photovoltaic modules need to be harmlessly treated and recycled to avoid waste of resources. In the composition structure of photovoltaic modules, glass and cells have certain recycling value. The current mainstream recycling method is to first use heat treatment, organic solvent treatment or laser knife to completely separate the encapsulation glass and backplane, and then use mechanical and optical screening equipment to separate the glass and cells. Secondly, the impurities doped in the cells are removed by wet purification method to purify the cells. The higher the purity of the cells, the higher the recycling value.

[0004] However, the current wet purification method mainly uses filters for purification operations. This method has major disadvantages during use. The main reason is that when the battery cells are cleaned, the battery cells pass through the mesh with the flow of the cleaning liquid, causing the battery cells to be lost and the battery cells to be incompletely cleaned; secondly, during the cleaning process, some battery cells will clog the mesh of the filter, damaging the filter structure and causing the purification operation to stagnate. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for purifying cells in discarded photovoltaic panels, so as to solve the technical defects that when purifying and cleaning the cells through a filter, on the one hand, the cells are lost and the cell cleaning is not thorough, and on the other hand, the filter structure is damaged, resulting in stagnation of the purification operation.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, a device for purifying cells in waste photovoltaic panels is provided, comprising: The cleaning component comprises a first cleaning tank, a second cleaning tank and a third cleaning tank, wherein the first cleaning tank and the third cleaning tank are provided with desalted water, and the second cleaning tank is provided with a mixture of a surfactant, ethanol and a defoaming agent having a certain concentration; A liquid circulation component is arranged on the cleaning component, and a liquid pumping unit is installed on the liquid circulation component; A drying component, arranged on one side of the cleaning component; The lateral moving component is arranged above the cleaning component and the drying component, and the battery sheet placement component is installed on the lateral moving component.

[0007] Furthermore, the first cleaning tank, the second cleaning tank and the third cleaning tank are each provided with a liquid circulation assembly, and each of the liquid circulation assemblies is provided with a liquid pumping unit; When cleaning the battery cells, the lateral moving component drives the battery cell placement component to sequentially enter the first cleaning tank, the second cleaning tank and the third cleaning tank to clean the battery cells.

[0008] Furthermore, the battery cell placement assembly includes a tray, a hanger is installed on the tray, and the hanger is connected to the lateral movement assembly.

[0009] Furthermore, enclosure bars are provided around the pallet, wherein mounting frames are provided on the tops of two opposite enclosure bars, and the hanger is arranged between the two mounting frames.

[0010] Furthermore, the cross section of the tray is rectangular.

[0011] Furthermore, the drying assembly includes a drying furnace, and heating units are provided on two opposite sides of the drying furnace, and the heating units are used to heat the interior of the drying furnace; The top of the drying furnace is slidably connected with a furnace cover.

[0012] Furthermore, a guide rail is provided on the top of the drying furnace, and a slider is provided on the bottom of the furnace cover, and the slider cooperates with the guide rail.

[0013] Furthermore, the drying furnace is provided with an air inlet, and the furnace cover is provided with an exhaust hole.

[0014] Furthermore, the lateral movement assembly includes a lateral guide rail, an electric hoist is installed on the lateral guide rail, and the electric hoist is connected to the battery cell placement assembly.

[0015] In a second aspect, a method for using a device for purifying cells in waste photovoltaic panels is provided, wherein the method is performed using the purification device as described above, and comprises: Adding deionized water into the first cleaning tank and the third cleaning tank, and adding a mixture of a surfactant, ethanol and a defoaming agent having a certain concentration into the second cleaning tank; The battery cells to be cleaned are stacked on a pallet, and the electric hoist and the transverse guide rail are used to drive the hanger on the pallet to make the pallet move laterally; By lateral displacement, the battery cells to be cleaned on the tray are sequentially placed into the first cleaning tank, the second cleaning tank and the third cleaning tank to clean the battery cells to be cleaned; Using a liquid circulation component to circulate the liquids in the first cleaning tank, the second cleaning tank and the third cleaning tank; The cleaned battery cells are placed in a drying furnace through the cooperation of the electric hoist and the transverse guide rail, and the battery cells are dried by the heating unit in the drying furnace.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up the first cleaning pool, the second cleaning pool and the third cleaning pool, and adding deionized water to the first cleaning pool and the third cleaning pool, and adding a mixture of a certain concentration of surfactant, ethanol and defoaming agent to the second cleaning pool, when cleaning and purifying the battery cells to be cleaned, on the one hand, the problem of battery cells being lost as the liquid flows during the cleaning process can be avoided, and the problem that the battery cells will damage the filter holes during the purification operation through the filter screen in the existing wet purification method, resulting in battery cell loss and incomplete cleaning of the battery cells can be solved; on the other hand, the impurities on the battery cells can be effectively removed by two different cleaning liquids, thereby improving the purity of the battery cells. Secondly, the liquid circulation component is installed on the cleaning component, and cooperates with the liquid pumping unit to realize the recycling of two different cleaning liquids, which not only reduces the water resource consumption during the cleaning process, but also ensures the quality of the cleaning liquid through circulation filtration and other methods, avoiding the problem of affecting the cleaning effect due to cleaning liquid contamination, and further improving the purification efficiency and economy; finally, the drying component can be used to quickly dry the cleaned battery cells, thereby accelerating the purification efficiency.

[0017] 2. The setting of the first cleaning tank, the second cleaning tank and the third cleaning tank can be applicable to the cleaning and purification operations of battery cells of different sizes.

[0018] 3. Using a tray to hold the battery cells to be cleaned can prevent the battery cells from slipping or being damaged during the cleaning, drying and moving process; and the connection between the hanger and the horizontal moving component realizes the automation of battery cell cleaning.

[0019] 4. The hanger is set between the two mounting frames, which further improves the stability of the pallet during movement.

[0020] 5. The rectangular structure can effectively disperse the pressure generated when the battery cells are placed, reducing deformation or damage caused by uneven local force. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of the device for purifying cells in waste photovoltaic panels provided by the present invention; Figure 2 A schematic diagram of a cell placement assembly in a cell purification device for waste photovoltaic panels provided by the present invention; Figure 3 A schematic diagram of a drying component in a device for purifying cells in waste photovoltaic panels provided by the present invention; Figure 4 A flow chart of the method for using the device for purifying cells in waste photovoltaic panels provided by the present invention; Among them: 1. Cleaning assembly; 101. First cleaning tank; 102. Second cleaning tank; 103. Third cleaning tank; 2. Pipeline; 3. Liquid pumping unit; 4. Drying furnace; 401. Heating unit; 402. Guide rail; 403. Furnace cover; 4031. Exhaust hole; 404. Air inlet hole; 5. Horizontal guide rail; 6. Electric hoist; 7. Battery cell placement assembly; 701. Tray; 702. Hanger. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Photovoltaic modules are composed of multiple solar cells connected in series and parallel. The main structure includes encapsulation glass, EVA film, cells and backplane, etc. Photovoltaic modules need to be harmlessly treated and recycled to avoid waste of resources. In the composition structure of photovoltaic modules, glass and cells have certain recycling value. The current mainstream recycling method is to first use heat treatment, organic solvent treatment or laser knife to completely separate the encapsulation glass and backplane, and then use mechanical and optical screening equipment to separate the glass and cells. Secondly, the impurities doped in the cells are removed by wet purification method to purify the cells. The higher the purity of the cells, the higher the recycling value.

[0030] However, the current wet purification method mainly uses filters for purification operations. This method has major disadvantages during use. The main reason is that when the battery cells are cleaned, the battery cells pass through the mesh with the flow of the cleaning liquid, causing the battery cells to be lost; secondly, during the cleaning process, some battery cells will clog the mesh of the filter, damaging the filter structure and causing the purification operation to stagnate.

[0031] In order to solve the above technical defects, the inventor provides a device and method for purifying cells in discarded photovoltaic panels.

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figure 1-Figure 3As shown, in the first aspect of the embodiment of the present invention, a device for purifying cells in waste photovoltaic panels is provided, the device comprising a cleaning component 1, the cleaning component 1 comprising a first cleaning tank 101, a second cleaning tank 102 and a third cleaning tank 103, deionized water is added to the first cleaning tank 101 and the third cleaning tank 103, and a mixture of a surfactant, ethanol and a defoaming agent with a certain concentration is added to the second cleaning tank 102; both liquids are used to clean the cells; a liquid circulation component is arranged in the first cleaning tank 101, the second cleaning tank 102 and the third cleaning tank 103, a liquid pumping unit 3 is installed on the liquid circulation component, when the cells to be cleaned are cleaned, the cleaning liquid in the first cleaning tank 101, the second cleaning tank 102 and the third cleaning tank 103 is circulated; a drying component is arranged on one side of the cleaning component 1, and is used to dry the cleaned cells; a lateral moving component is arranged above the cleaning component 1 and the drying component, and a cell placing component 7 is installed on the lateral moving component, and the lateral moving component is used to move the cell placing component 7 according to a preset working direction. The battery cells to be cleaned and purified are placed on the battery cell placement component 7, and a cleaning liquid is added to the cleaning component 1, and the drying component is started at the same time; then the battery cell placement component 7 is driven by the lateral moving component to move to the top of the cleaning component 1, and the impurities on the battery cells to be cleaned are cleaned in the first cleaning tank 101, the second cleaning tank 102 and the third cleaning tank 103 in turn; the battery cells after cleaning are then entered into the drying component by the cooperation of the lateral moving component and the battery cell placement component 7, and are heated and dried by the drying component, thereby completing the purification operation; in the process of cleaning the battery cells, by setting the first cleaning tank 101, the second cleaning tank 102 and the The third cleaning pool 103, and adding deionized water to the first cleaning pool 101 and the third cleaning pool 103, and adding a mixture of a certain concentration of surfactant, ethanol and defoaming agent to the second cleaning pool 102, when cleaning and purifying the battery cells to be cleaned, on the one hand, it can prevent the battery cells from being lost with the flow of liquid during the cleaning process, and solve the problem that the battery cells will damage the filter holes when the existing wet purification method is used to purify through the filter screen, resulting in the battery cells flowing through the filter holes with the flow of liquid and losing and incomplete cleaning; on the other hand, through two different cleaning liquids, impurities on the battery cells can be effectively removed, and the purity of the battery cells is improved. Secondly, the liquid circulation component is installed on the cleaning component 1, and cooperates with the liquid pumping unit 3 to realize the recycling of two different cleaning liquids, which not only reduces the water resource consumption in the cleaning process, but also ensures the quality of the two cleaning liquids through circulation filtration and other methods, avoiding the problem of affecting the cleaning effect due to cleaning liquid pollution, and further improving the purification efficiency and economy; finally, the drying component can be used to quickly dry the cleaned battery cells, which speeds up the purification efficiency.

[0033] like Figure 1 As shown, further, the first cleaning pool 101, the second cleaning pool 102 and the third cleaning pool 103 are all rectangular structures. In the process of cleaning the battery cells, the fallen or slipped battery cells can be effectively intercepted inside the pool, which can solve the problem of battery cell loss during the cleaning process and can also be applied to the cleaning and purification of battery cells of different sizes; secondly, by setting a liquid circulation component on each cleaning pool and installing a liquid pumping unit 3 on each liquid circulation component, two different cleaning liquids can be recycled during the cleaning process; specifically, the liquid circulation component is preferably a pipeline 2, and the liquid pumping unit 3 is preferably a water pump. It is worth noting that the cleaning liquid in the first cleaning pool 101 is deionized water, the cleaning liquid in the second cleaning pool 102 is a mixture of surfactant, ethanol and defoaming agent with a certain concentration, and the cleaning liquid added to the third cleaning pool 103 is the same as the cleaning liquid in the first cleaning pool 101, which is deionized water; the cleaning liquid in the second cleaning pool 102 is mainly used to remove impurities carried by the battery cells after cleaning in the first cleaning pool 101.

[0034] During the cleaning and purification process, the lateral moving component first moves the battery cells to be cleaned stacked on the battery cell placement component 7 to the first cleaning tank 101, and at the same time starts the liquid circulation component on the first cleaning tank 101, so that the battery cells to be cleaned are fully in contact with the desalted water, and the soluble impurities mixed in the battery cells are removed. At the same time, the desalted water can be recycled; then the battery cells are moved to the second cleaning tank 102 by the lateral moving component to remove the impurities adhering to the surface of the battery cells (mainly the residues after EVS removal), and finally the battery cells are moved to the third cleaning tank 103 to remove the impurities carried by the battery cells in the second cleaning tank 102. Through the coordinated operation of the first cleaning tank 101, the second cleaning tank 102 and the third cleaning tank 103, the impurities attached to the battery cells can be completely removed. In order to ensure that the battery cells will not fall off during the cleaning process, such as Figure 2 As shown, the battery cell placement component 7 includes a tray 701, and the cross-section of the tray 701 is rectangular. The rectangular structure can effectively disperse the pressure generated when the battery cells are placed, and reduce the deformation or damage of the tray 701 caused by local uneven force; a hanger 702 is installed on the tray 701, and the hanger 702 is connected to the lateral moving component. The tray 701 is provided with enclosure rods on all sides, and the tops of two opposite enclosure rods are provided with mounting frames, and the hanger 702 is arranged between the two mounting frames. On the one hand, the setting of the mounting frame can enclose the battery cells stacked on the tray 701 to reduce the possibility of the battery cells slipping or falling. On the other hand, the mounting frame further improves the stability of the tray 701 during the movement.

[0035] like Figure 3As shown, the drying assembly includes a drying furnace 4, which is a rectangular structure and is adapted to the tray 701. Heating units 401 are provided on opposite sides of the drying furnace 4. The two heating units 401 are used to heat the inside of the drying furnace 4 and dry the battery cells located in the drying furnace 4. In the application process, the heating unit 401 is preferably a quartz tube protection resistance wire heating rod. In addition, a guide rail 402 is provided on the top of the drying furnace 4, and a slider is provided at the bottom of the furnace cover 403. The slider cooperates with the guide rail 402 to enable the drying furnace 4 to be slidably connected with the furnace cover 403, which is convenient for opening or blocking and reduces labor intensity. An air inlet 404 is provided on the drying furnace 4, and an exhaust hole 4031 is provided on the furnace cover 403, which can effectively discharge steam during the drying process.

[0036] like Figure 1 As shown, the lateral movement assembly in this embodiment includes a lateral guide rail 5 , on which an electric hoist 6 is installed, and the electric hoist 6 is connected to a battery cell placement assembly 7 .

[0037] In a second aspect of an embodiment of the present invention, a method for using a device for purifying cells in waste photovoltaic panels is provided. The method is performed using the purification device as described above. Figure 4 As shown, including: S101, adding deionized water into the first cleaning tank and the third cleaning tank, and adding a mixture of a surfactant, ethanol and a defoaming agent with a certain concentration into the second cleaning tank; illustratively, adding deionized water into the first cleaning tank 101 and the third cleaning tank 103, respectively, and adding a mixture of a surfactant, ethanol and a defoaming agent with a certain concentration into the second cleaning tank 102, the liquid levels of the two cleaning liquids are located in the middle and upper part of the first cleaning tank 101, the second cleaning tank 102 and the third cleaning tank 103, and are at a certain distance from the tank, on the one hand, after the tray 701 enters the tank, the two cleaning liquids can cover the battery cells accumulated on the tray 701, on the other hand, when the first batch of battery cells to be cleaned are cleaned, the remaining contents of the two cleaning liquids can continue to clean the second batch of battery cells to be cleaned.

[0038] S102, stacking the battery cells to be cleaned on a pallet, and utilizing the cooperation of an electric hoist and a transverse guide rail to drive the hanger on the pallet to cause the pallet to move laterally; illustratively, since the first cleaning pool 101, the second cleaning pool 102, and the third cleaning pool 103 are arranged laterally with respect to each other, the electric hoist 6 and the transverse guide rail 5 are utilized to enable the electric hoist 6 to drive the battery cells stacked on the pallet 701 through the hanger 702 to move laterally above the first cleaning pool 101, the second cleaning pool 102, and the third cleaning pool 103.

[0039] S103, by lateral displacement, the battery cells to be cleaned on the tray are sequentially placed in the first cleaning tank, the second cleaning tank and the third cleaning tank for cleaning. Exemplarily, under the action of the electric hoist 6, the battery cells to be cleaned on the tray 701 are sent to the first cleaning tank 101, and the battery cells are cleaned with desalted water. At the same time, the liquid pumping unit on the first cleaning tank 101 is started to circulate the desalted water in the first cleaning tank 101. Then, the battery cells are placed in the second cleaning tank 102, and the impurities remaining on the battery cells during the cleaning process in the first cleaning tank 101 are cleaned again; after the cleaning is completed, the battery cells are finally cleaned in the third cleaning tank 103.

[0040] S104. Utilize a liquid circulation component to circulate the liquid in the first cleaning tank, the second cleaning tank, and the third cleaning tank. For example, during the cleaning process of the battery cells, when the battery cells are cleaned in different cleaning tanks, the corresponding liquid circulation component on the cleaning tank is opened to circulate the cleaning liquid (deionized water or a mixture of surfactant, ethanol, and defoaming agent with a certain concentration), thereby saving resources.

[0041] S105, the cleaned battery cells are placed in a drying furnace through the cooperation of the electric hoist and the transverse guide rail, and the battery cells are dried by the heating unit in the drying furnace; illustratively, after the battery cells have passed through the first cleaning tank 101, the second cleaning tank 102 and the third cleaning tank 103 to completely remove impurities on the battery cells, the electric hoist 6 and the transverse guide rail 5 are cooperated to move the tray 701 to the top of the drying furnace 4, and the tray 701 is sent into the drying furnace 4, and then the hanger 702 is separated from the electric hoist 6; the furnace cover 403 is moved to block the drying furnace 4, and finally the heating unit 401 is started to heat the inside of the drying furnace 4 by using the external PLC control cabinet to dry the battery cells and complete the purification; when cleaning and purifying subsequent battery cells, it is only necessary to repeat the above steps.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A device for purifying cells from discarded photovoltaic panels, characterized in that: include: A cleaning component (1) comprises a first cleaning tank (101), a second cleaning tank (102) and a third cleaning tank (103), wherein the first cleaning tank (101) and the third cleaning tank (103) are provided with demineralized water, and the second cleaning tank (102) is provided with a mixture of a surfactant, ethanol and a defoaming agent having a certain concentration; A liquid circulation component, arranged on the cleaning component (1), wherein a liquid pumping unit (3) is installed on the liquid circulation component; A drying component, arranged on one side of the cleaning component (1); A transverse moving component is arranged above the cleaning component (1) and the drying component, and a battery cell placement component (7) is installed on the transverse moving component.

2. The purification device according to claim 1, characterized in that A liquid circulation component is disposed on each of the first cleaning tank (101), the second cleaning tank (102) and the third cleaning tank (103), and a liquid pumping unit (3) is installed on each of the liquid circulation components; When cleaning the battery cells, the lateral moving component drives the battery cell placement component (7) to sequentially enter the first cleaning tank (101), the second cleaning tank (102) and the third cleaning tank (103) to clean the battery cells.

3. The purification device according to claim 1 or 2, characterized in that: The battery sheet placement assembly (7) comprises a tray (701), a hanger (702) is mounted on the tray (701), and the hanger (702) is connected to the lateral movement assembly.

4. The purification device according to claim 3, characterized in that The tray (701) is provided with enclosure bars on all four sides, wherein the tops of two opposing enclosure bars are provided with mounting frames, and the hanger (702) is arranged between the two mounting frames.

5. The purification device according to claim 3, characterized in that: The cross section of the tray (701) is rectangular.

6. The purification device according to claim 1, characterized in that: The drying component comprises a drying furnace (4), wherein heating units (401) are provided on two opposite sides of the drying furnace (4), and the heating units (401) are used to heat the interior of the drying furnace (4); A furnace cover (403) is slidably connected to the top of the drying furnace (4).

7. The purification device according to claim 6, characterized in that A guide rail (402) is provided at the top of the drying furnace (4), and a slider is provided at the bottom of the furnace cover (403), and the slider cooperates with the guide rail (402).

8. The purification device according to claim 6, characterized in that The drying furnace (4) is provided with an air inlet hole (404), and the furnace cover (403) is provided with an air exhaust hole (4031).

9. The purification device according to claim 1, characterized in that: The transverse movement assembly comprises a transverse guide rail (5), an electric hoist (6) is mounted on the transverse guide rail (5), and the electric hoist (6) is connected to the battery cell placement assembly (7).

10. A method for using a device for purifying cells in discarded photovoltaic panels, characterized in that: The method is carried out using the purification device according to any one of claims 1 to 9, comprising: Adding deionized water into the first cleaning tank and the third cleaning tank, and adding a mixture of a surfactant, ethanol and a defoaming agent having a certain concentration into the second cleaning tank; The battery cells to be cleaned are stacked on a pallet, and the electric hoist and the transverse guide rail are used to drive the hanger on the pallet to make the pallet move laterally; By lateral displacement, the battery cells to be cleaned on the tray are sequentially placed into the first cleaning tank, the second cleaning tank and the third cleaning tank to clean the battery cells to be cleaned; Using a liquid circulation component to circulate the liquids in the first cleaning tank, the second cleaning tank and the third cleaning tank; The cleaned battery slices are placed in a drying furnace through the cooperation of the electric hoist and the transverse guide rail, and the battery slices are dried by the heating unit in the drying furnace.

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