Solid-liquid separation structure for film residues and battery piece film removing device

Abstract

The utility model discloses a solid-liquid separation structure for film residues and a battery piece film removing device. The solid-liquid separation structure of the film residues comprises a rotary liquid removal mechanism and an extrusion liquid removal mechanism which are connected in sequence, and the extrusion liquid removal mechanism is used for carrying out extrusion liquid removal on the film residues subjected to rotary centrifugal liquid removal treatment of the rotary liquid removal mechanism; the push plates move relatively to conduct extrusion liquid removal treatment on the film residues, the film residues obtained after liquid removal is completed are transferred to the first discharging opening, and separated liquid flows out of the first liquid outlet. According to the solid-liquid separation structure for the film residues, through rotary centrifugal liquid removal and two-way extrusion removal treatment, full separation of liquid and the film residues is achieved through combination of the two liquid removal treatments, and the treatment cost is reduced; the film slag treatment effect is improved, and the large-scale productivity requirement can be met; and the extrusion liquid removal mechanism is used for carrying out extrusion liquid removal treatment on the film residues and transferring the film residues at the same time.

Description

Technical Field

[0001] The present application relates to the field of solar cell technology, and in particular to a solid-liquid separation structure for film residue and a cell film removal device. Background Art

[0002] During the manufacturing process of solar cells, masks are used for front-side patterning to form front grooves, and for back-side patterning to form back grooves. When removing the mask adhesive, film residue is produced. However, the large amount of liquid contained in the film residue makes it difficult to handle and increases processing costs. Existing film residue treatment equipment mostly uses a screw-type extrusion dehydration method, which can only remove 35% to 45% of the liquid in the film residue, resulting in poor solid-liquid separation of the film residue. Liquids, especially chemicals, carried away by the film residue are difficult to handle, and the cost of film residue treatment is high.

[0003] Therefore, it is very necessary to provide a solid-liquid separation structure for membrane residue with a higher deliquescence capacity and a cell membrane removal device. Utility Model Content

[0004] The purpose of this application is to solve the above problems and provide a solid-liquid separation structure for film residue and a battery cell film removal device. The solid-liquid separation structure of film residue can fully separate the solid and liquid of the film residue for removing the mask glue, thereby reducing the processing cost of the film residue.

[0005] In order to solve the above technical problems, the technical solutions adopted in this application are as follows:

[0006] In the first aspect, the present application provides a solid-liquid separation structure for membrane residue, which includes a rotary dehydration mechanism and an extrusion dehydration mechanism connected in sequence, the extrusion dehydration mechanism is used to extrude and dehydrate the membrane residue that has been subjected to rotary centrifugal dehydration treatment by the rotary dehydration mechanism; the extrusion dehydration mechanism includes relatively arranged push plates, and a first liquid outlet and a first material outlet are provided on the moving path of the push plates; the push plates move relatively to extrude and dehydrate the membrane residue, and transfer the membrane residue after dehydration to the first material outlet, and the separated liquid flows out from the first liquid outlet.

[0007] Optionally, the extrusion and deliquidation mechanism also includes a first shell provided with a first accommodating chamber and a first driving member externally arranged on the first accommodating chamber; the push plate is arranged in the first accommodating chamber, the driving end of the first driving member is connected to the push plate, and the first discharge port and the first liquid outlet are arranged on the first shell.

[0008] Optionally, the rotary deliquoring mechanism includes a second shell provided with a second accommodating chamber, a second driving member externally arranged on the second shell, and a filter cartridge provided in the second accommodating chamber and driven by the second driving member; the filter cartridge is coaxially arranged with the second shell, and the filter cartridge is surrounded to form a chamber for accommodating film residue; the second shell is provided with a second feed port, a second discharge port and a second liquid outlet; the first shell is provided with a first feed port connected to the second discharge port, and the first discharge port is externally connected to a film residue collection tank.

[0009] Optionally, the filter cartridge is at least partially configured as a filter screen, and the pore size of the filter screen is 1±0.5 mm.

[0010] Optionally, a control valve is provided at the second discharge port.

[0011] Optionally, a shock-absorbing structure is provided between the inner wall of the second shell and the outer wall of the filter cartridge.

[0012] Optionally, the solid-liquid separation structure of the membrane residue also includes a liquid reflux mechanism, which is used to recover the liquid separated by the rotary deliquidation mechanism and the extrusion deliquidation mechanism; the liquid reflux mechanism includes a first reflux pipe and a second reflux pipe respectively connected to the second liquid outlet and the first liquid outlet.

[0013] Optionally, the extrusion deliquoring mechanism further includes a liquid collecting tank connected to the first liquid outlet; the liquid collecting tank is arranged between the first liquid outlet and the second reflux pipe.

[0014] Optionally, the extrusion dehydration mechanism is provided at the lower portion of the rotation dehydration mechanism.

[0015] In the second aspect, the present application provides a battery cell film removal device, including a film removal mechanism and a solid-liquid separation structure for film residue as described above; the film removal mechanism is used to remove the mask glue from the battery cell and transport the generated film residue to the solid-liquid separation structure of the film residue.

[0016] The beneficial effects of this application include at least:

[0017] The solid-liquid separation structure for membrane residue described in this application includes a rotary deliquating mechanism and an extrusion deliquating mechanism. The rotary deliquating mechanism is used to perform a preliminary rotary centrifugal deliquating treatment on the membrane residue. After being treated by the rotary deliquating mechanism, the membrane residue still carries some liquid. The membrane residue treated by the rotary deliquating mechanism is further squeezed by the relative movement of the push plate 21 in the extrusion deliquating mechanism, and the liquid remaining in the membrane residue is subjected to a second separation. The composite deliquating mechanism, which combines rotary centrifugal deliquating and bidirectional extrusion deliquating treatment, achieves a full separation of the liquid from the membrane residue, reducing processing costs; improving the membrane residue processing effect and efficiency, and being able to meet large-scale production capacity requirements; the extrusion deliquating mechanism performs an extrusion deliquating treatment on the membrane residue while transferring the membrane residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the solid-liquid separation structure for membrane slag in this application.

[0019] Figure 2 This is the structural diagram of the extrusion dehydration mechanism.

[0020] Figure 3 Schematic diagram of the internal structure of the first shell.

[0021] Figure 4 This is a schematic structural diagram of the cell film removal device of the present application.

[0022] Among them, 10-solid-liquid separation structure for membrane residue, 1-rotating deliquidation mechanism, 11-second shell, 12-second driving member, 13-second accommodating chamber, 14-filter cartridge, 141-filter screen, 15-second feed port, 16-second discharge port, 17-second liquid outlet, 18-control valve, 19-shock absorption structure, 2-extrusion deliquidation mechanism, 21-push plate, 211-first push plate, 212-second push plate, 22-first liquid outlet, 23-first discharge port, 24-liquid collecting tank, 25-first accommodating chamber, 26-first shell, 27-first driving member, 271-first telescopic cylinder, 272-second telescopic cylinder, 28-first feed port, 29-membrane residue collecting tank, 3-liquid reflux mechanism, 31-first reflux pipe, 32-second reflux pipe, 33-liquid storage tank, 20-membrane removal mechanism. DETAILED DESCRIPTION

[0023] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0024] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0025] In this application, descriptions such as “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0026] In the description of this application, the orientations or positional relationships indicated are based on those shown in the accompanying drawings and are provided solely for the purpose of facilitating and simplifying the description of this application. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting this application. The "downward" direction refers to the direction of the mounting plane of the solid-liquid separation structure proximal to the membrane residue; the "inward" direction refers to the direction proximal to the central axis of the first shell, and the "outward" direction refers to the direction away from the central axis of the first shell.

[0027] Example:

[0028] In the first aspect, an embodiment of the present application provides a solid-liquid separation structure for membrane residue, which is preferably used for solid-liquid separation treatment of membrane residue generated after removing the mask glue from the battery cell; it includes a rotary dehydration mechanism 1 and an extrusion dehydration mechanism 2 connected in sequence, the rotary dehydration mechanism 1 is used to perform rotary centrifugal dehydration on the received membrane residue, and the extrusion dehydration mechanism 2 is used to extrude and dehydrate the membrane residue treated by the rotary dehydration mechanism 1; the extrusion dehydration mechanism 2 includes relatively arranged push plates 21, and a first liquid outlet 22 and a first material outlet 23 are provided on the moving path of the push plate 21; the push plate 21 moves relatively to perform extrusion and dehydration treatment on the membrane residue, and transfers the membrane residue after dehydration to the first material outlet 23, and the separated liquid flows out from the first liquid outlet 22.

[0029] The solid-liquid separation structure for membrane residue described in the present application includes a rotary deliquidation mechanism 1 and an extrusion deliquidation mechanism 2. The rotary deliquidation mechanism 1 is used to perform preliminary rotary centrifugal deliquidation treatment on the membrane residue. After being treated by the rotary deliquidation mechanism 1, the membrane residue still carries some liquid. The membrane residue treated by the rotary deliquidation mechanism 1 is further squeezed by the relative movement of the push plate 21 in the extrusion deliquidation mechanism 2, and the liquid remaining in the membrane residue is subjected to a second separation. Through rotary centrifugal deliquidation and bidirectional extrusion deliquidation treatment, the composite deliquidation mechanism that combines two deliquidation treatments achieves sufficient separation of the liquid and the membrane residue, reduces processing costs, improves the membrane residue treatment effect and performance, and can meet large-scale production capacity requirements; the extrusion deliquidation mechanism 2 performs extrusion deliquidation treatment on the membrane residue while transferring the membrane residue.

[0030] See also Figure 2 As shown, the extrusion and deliquidation mechanism 2 further includes a first housing 26 having a first accommodating chamber 25 and a first driving member 27 externally disposed to the first accommodating chamber 25. The push plate 21 is disposed within the first accommodating chamber 25, and the driving end of the first driving member 27 is connected to the push plate 21. The first discharge port 23 and the first liquid outlet 22 are disposed on the first housing 26. The first discharge port 23 is externally connected to a film residue collection tank 29. The film residue collection tank 29 collects the deliquidated film residue blocks for centralized processing.

[0031] During use, the rotary dehydration mechanism 1 transports the membrane residue after centrifugal dehydration from the second discharge port 16 to the extrusion dehydration mechanism 2, where it falls into the first shell 26 and is placed between the push plates 21. Driven by the first drive member 27, the push plates 21 move relatively close to squeeze and dehydrate the membrane residue, and the dehydrated liquid flows out from the first liquid outlet 22. After dehydration is completed, the membrane residue forms a membrane residue filter cake under the action of the push plates 21. The resulting membrane residue filter cake is moved by the push plates 21 to the position corresponding to the first discharge port 23. The push plates 21 move relatively away, causing the membrane residue filter cake to fall from the first discharge port 23 and be collected in the membrane residue collection tank 29 for centralized processing of the membrane residue filter cake. In this way, the extrusion dehydration mechanism 2 performs a second dehydration process on the membrane residue, so that the liquid and the membrane residue are fully separated and the liquid and the membrane residue filter cake can be processed separately.

[0032] The first driving member 27 is disposed perpendicular to the plane of the push plate 21. The first driving member 27 is a telescopic cylinder, and the telescopic end of the first driving member 27 is connected to the surface of the push plate 21. Optionally, in other embodiments, the first liquid outlet 22 is also provided with a filter 141 for filtering the liquid to prevent film residue from flowing out of the first liquid outlet 22.

[0033] Optionally, during the extrusion and deliquescence process, the membrane residue is transferred by the push plate 21 to the area corresponding to the first liquid outlet 22. At this time, the extruded liquid can flow directly to the first liquid outlet 22, thereby improving the liquid discharge efficiency. Figure 2As shown, the push plate 21 includes a first push plate 211 and a second push plate 212 relatively arranged in the first shell 26, the first driving member 27 includes a first telescopic cylinder 271 and a second telescopic cylinder 272 respectively connected to the first push plate 211 and the second push plate 212, the first liquid outlet 22 and the first material outlet 23 are arranged between the travel paths of the first push plate 211 and the second push plate 212, the first push plate 211 is arranged close to the first liquid outlet 22, and the second push plate 212 is arranged close to the first material outlet 23, the area corresponding to the first liquid outlet 22 is the first travel, and the area corresponding to the first material outlet 23 is the second travel. In the process of squeezing and deliquiding the film residue, the second telescopic cylinder 272 extends, driving the second push plate 212 to move close to the first push plate 211. The first push plate 211 and the second push plate 212 work together to move the film residue to the area corresponding to the first stroke, and apply force to the film residue to squeeze and deliquidate the film residue. Under the joint action of the first push plate 211 and the second push plate 212, the liquid is separated from the film residue and discharged from the first liquid outlet 22. The first push plate 211 and the second push plate 212 are in contact with each other. The plates 212 continuously move closer to each other until deliquescence is complete. After deliquescence is complete, a film residue block of a certain shape is formed between the first push plate 211 and the second push plate 212. The first telescopic cylinder 271 extends, and the second telescopic cylinder 272 contracts, so that the first push plate 211 and the second push plate 212 jointly clamp the resulting film residue block and move it to the second stroke position corresponding to the first discharge port 23. Then, the first push plate 211 and the second push plate 212 move away from each other, allowing the film residue block to fall from the first discharge port 23. It is understood that the cross-sectional area of ​​the first discharge port 23 is not less than the cross-sectional area of ​​the film residue block to ensure that the film residue block can be smoothly discharged from the first discharge port 23.

[0034] See also Figure 1 and Figure 3As shown, the rotary deliquescence mechanism 1 includes a second shell 11 provided with a second accommodating chamber 13, a second driving member 12 externally arranged on the second shell 11, and a filter cartridge 14 provided in the second accommodating chamber 13 and driven by the second driving member 12; the filter cartridge 14 is coaxially arranged with the second shell 11, and the filter cartridge 14 is surrounded by a chamber for accommodating membrane residue; the second shell 11 is provided with a second feed port 15, a second discharge port 16 and a second liquid outlet 17, the second feed port 15 is used to receive the membrane residue to be processed, the second liquid outlet 17 is used for the outflow of liquid separated by rotary centrifugation, the second discharge port 16 is used to discharge the membrane residue that has undergone rotary centrifugal deliquescence, and the first shell 26 is provided with a first feed port 28 connected to the second discharge port 16. During use, membrane residue is fed into the chamber of the filter cartridge 14 through the second feed port 15. The second drive member 12 drives the filter cartridge 14 to rotate to centrifugally filter the membrane residue. During the rotation, liquid that is easily separated separates from the membrane residue and is discharged from the second housing 11 through the second liquid outlet 17. Optionally, the second drive member 12 is a rotary motor, and the filter cartridge 14 is connected to the rotating shaft of the rotary motor.

[0035] See also Figure 3 As shown, the filter cartridge 14 is at least partially configured as a filter screen 141, and the mesh size of the filter screen 141 is 1±0.5 mm. The setting of the pore size of the filter screen 141 ensures that the liquid can flow out smoothly while preventing the membrane residue from escaping from the filter cartridge 14.

[0036] See also Figure 1 As shown, a control valve 18 is provided at the second discharge port 16. When the filter cartridge 14 performs rotary centrifugal filtration on the membrane residue, the control valve 18 is closed to prevent the separated liquid from flowing from the second discharge port 16 to the extrusion deliquification mechanism 2. Optionally, the control valve 18 is a bidirectional pneumatic butterfly valve.

[0037] See also Figure 3 As shown, a shock-absorbing structure 19 is provided between the inner wall of the second housing 11 and the outer wall of the filter cartridge 14. This shock-absorbing structure 19 prevents the filter cartridge 14 from rotating excessively and deviating from its axis when driven by the second drive member 12, thereby improving the operational stability of the rotary dehydration mechanism 1 and avoiding structural damage to the components of the rotary dehydration mechanism 1 during operation. Optionally, the shock-absorbing structure 19 is a spring shock-absorbing structure, disposed radially along the filter cartridge 14, with one end connected to the inner wall of the second housing 11 and the other end connected to the outer wall of the filter cartridge 14.

[0038] See also Figure 1As shown, the solid-liquid separation structure for membrane residue also includes a liquid reflux mechanism 3, which is used to recover the liquid separated by the rotary deliquidation mechanism 1 and the extrusion deliquidation mechanism 2; the liquid reflux mechanism 3 includes a first reflux pipe 31 and a second reflux pipe 32 respectively connected to the second liquid outlet 17 and the first liquid outlet 22.

[0039] Optionally, in some embodiments, the liquid reflux mechanism 3 further includes a liquid storage tank 33 connected to the first reflux pipe 31 and the second reflux pipe 32; when the liquid storage tank 33 is filled with recovered liquid, the recovered liquid is centrally placed in the liquid circulation storage tank of the solar cell production equipment; in this way, the solid-liquid separation structure of the membrane residue can be independently arranged for easy arrangement. In another embodiment, the first reflux pipe 31 and the second reflux pipe 32 of the liquid reflux mechanism 3 are connected to the liquid circulation storage tank of the solar cell production equipment, so that the liquid returned after being processed by the solid-liquid separation structure of the membrane residue can be immediately involved in the liquid circulation of the production equipment.

[0040] The setting of the liquid reflux mechanism 3 allows the liquid separated by the rotary deliquidation mechanism 1 and the squeeze deliquidation mechanism 2 to flow back to the liquid reflux mechanism 3 through the second liquid outlet 17 and the first liquid outlet 22, thereby recovering the liquid generated by the rotary deliquidation mechanism 1 and the squeeze deliquidation mechanism 2, and recycling the separated liquid for a second time, thereby reducing pollution to the environment and saving production costs.

[0041] See also Figure 1 and Figure 2 As shown, the extrusion deliquification mechanism 2 further includes a liquid collection tank 24 connected to the first liquid outlet 22; the liquid collection tank 24 is disposed between the first liquid outlet 22 and the second reflux pipe 32. When the extrusion deliquification mechanism 2 performs the second extrusion deliquification process on the film residue, if the outflow of liquid is small, the liquid collection tank 24 collects and discharges the liquid, facilitating centralized processing operations.

[0042] See also Figure 1 As shown, in the embodiment of the present application, the extrusion dehydration mechanism 2 is arranged below the rotary dehydration mechanism 1. The rotary dehydration mechanism 1 and the extrusion dehydration mechanism 2 are arranged in an upper and lower distribution, which saves equipment installation space and allows the film residue discharged from the rotary dehydration mechanism 1 to be directly fed into the extrusion dehydration mechanism 2, eliminating the need for an intermediate material delivery pipeline.

[0043] Specifically, the second feed port 15 is provided at the upper portion of the second housing 11, the second discharge port 16 and the second liquid outlet 17 are provided at the lower portion of the second housing 11, the first feed port 28 is provided at the upper portion of the first housing 26 and aligned with the second discharge port 16, and the first discharge port 23 and the first liquid outlet 22 are provided at the lower portion of the first housing 26. It will be appreciated that in other embodiments, the rotary deliquating mechanism 1 and the extrusion deliquating mechanism 2 may be adaptively adjusted based on actual installation space and production requirements.

[0044] After testing, the solid-liquid separation structure of the membrane slag described in this application has a deliquoring rate of more than 85% for the membrane slag, fully removes the liquid in the membrane slag, reduces the amount of liquid in the membrane slag, reduces the processing cost, and improves the membrane slag processing efficiency.

[0045] In the second aspect, the present application provides a battery cell film removal device, see Figure 4 As shown, it includes a film removal mechanism 20 and the solid-liquid separation structure 10 for film residue as described above; the film removal mechanism 20 is used to remove the mask glue from the battery cell and transport the generated film residue to the solid-liquid separation structure 10 for film residue.

[0046] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above embodiments merely represent preferred embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A solid-liquid separation structure for membrane slag, characterized by: It includes a rotary dehydration mechanism and an extrusion dehydration mechanism connected in sequence, the extrusion dehydration mechanism is used to extrude and dehydrate the membrane residue that has been subjected to the rotary centrifugal dehydration treatment by the rotary dehydration mechanism; the extrusion dehydration mechanism includes relatively arranged push plates, and a first liquid outlet and a first material outlet are provided on the moving path of the push plates; the push plates move relatively to extrude and dehydrate the membrane residue, and transfer the membrane residue after dehydration to the first material outlet, and the separated liquid flows out from the first liquid outlet.

2. The solid-liquid separation structure for membrane slag according to claim 1, characterized in that: The extrusion and deliquidation mechanism also includes a first shell provided with a first accommodating chamber and a first driving member externally arranged on the first accommodating chamber; the push plate is arranged in the first accommodating chamber, the driving end of the first driving member is connected to the push plate, and the first discharge port and the first liquid outlet are arranged on the first shell.

3. The solid-liquid separation structure for membrane slag according to claim 2, characterized in that: The rotary deliquoring mechanism includes a second shell provided with a second accommodating chamber, a second driving member externally arranged on the second shell, and a filter cartridge arranged in the second accommodating chamber and driven by the second driving member; the filter cartridge is coaxially arranged with the second shell, and the filter cartridge is surrounded by a chamber for accommodating film residue; the second shell is provided with a second feed port, a second discharge port and a second liquid outlet; the first shell is provided with a first feed port connected to the second discharge port, and the first discharge port is externally connected to a film residue collection tank.

4. The solid-liquid separation structure for membrane slag according to claim 3, characterized in that: The filter cartridge is at least partially configured as a filter screen, and the pore size of the filter screen is 1±0.5 mm.

5. The solid-liquid separation structure for membrane slag according to claim 3, characterized in that: A control valve is provided at the second discharge port.

6. The solid-liquid separation structure for membrane slag according to claim 3, characterized in that: A shock-absorbing structure is provided between the inner wall of the second shell and the outer wall of the filter cartridge.

7. The solid-liquid separation structure for membrane slag according to claim 3, characterized in that: The solid-liquid separation structure of the membrane residue also includes a liquid reflux mechanism, which is used to recover the liquid separated by the rotary deliquidation mechanism and the extrusion deliquidation mechanism; the liquid reflux mechanism includes a first reflux pipe and a second reflux pipe respectively connected to the second liquid outlet and the first liquid outlet.

8. The solid-liquid separation structure for membrane slag according to claim 7, characterized in that: The extrusion deliquescence mechanism further includes a liquid collecting tank connected to the first liquid outlet; the liquid collecting tank is arranged between the first liquid outlet and the second reflux pipe.

9. The solid-liquid separation structure for membrane slag according to claim 1, characterized in that: The extrusion dehydration mechanism is arranged at the lower part of the rotation dehydration mechanism.

10. A cell film removal device, characterized in that: It comprises a film removal mechanism and a solid-liquid separation structure for film residue as claimed in any one of claims 1 to 9; the film removal mechanism is used to remove the mask glue from the battery cell and transport the generated film residue to the solid-liquid separation structure for film residue.

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