Film removing liquid filtering structure and film removing device

Abstract

The utility model provides a membrane removing liquid filtering structure and a membrane removing device. The membrane removing liquid filtering structure comprises an isolation groove, and an isolation auxiliary groove is formed in the isolation groove; the film removing groove is provided with a first film removing auxiliary groove and a second film removing auxiliary groove, and the first film removing auxiliary groove is communicated with the isolation auxiliary groove and the second film removing auxiliary groove; the spraying pipe assembly is erected on the first film removing auxiliary tank, communicates with the film removing tank and is used for spraying the film removing liquid in the film removing tank, so that the sprayed film removing liquid enters the first film removing auxiliary tank; the circulating filtering assembly is arranged between the second membrane removing auxiliary tank and the isolation auxiliary tank and is used for filtering the membrane removing liquid entering the second membrane removing auxiliary tank through the first membrane removing auxiliary tank and conveying the filtered membrane removing liquid to the isolation auxiliary tank; according to the invention, the membrane removing liquid can be circularly filtered, the cell piece is prevented from being broken, and the production efficiency of a production line is improved.

Description

Technical Field

[0001] This application belongs to the field of solar cell technology, specifically relating to a membrane removal liquid filtration structure and membrane removal device. Background Technology

[0002] In the fabrication process of solar cells, it is usually necessary to use a mask to pattern the front side to form a front groove, and to use a mask to pattern the back side to form a back groove. After forming the required structure, the remaining photosensitive film on the cell needs to be removed by a stripping solution.

[0003] However, when removing the mask, a large amount of mask residue is generated inside the machine. After a period of use, a large amount of inherent adhesive and chemical residue are generated on the rollers and transmission gears inside the machine. When the machine continues to produce, these residues will cause wear on the gears and cause the machine to malfunction. At the same time, the residual adhesive on the rollers will cause the cells to stick together during the transmission process, resulting in cell fragmentation and affecting the production line capacity. Utility Model Content

[0004] This application provides a membrane stripping solution filtration structure and membrane stripping device for circulating and filtering the membrane stripping solution, avoiding cell fragmentation and improving the membrane stripping efficiency of the production line.

[0005] To address the aforementioned technical problems, this application provides a membrane-removing liquid filtration structure, comprising:

[0006] An isolation groove, wherein an isolation sub-groove is provided on the isolation groove;

[0007] A film removal tank, wherein a first film removal sub-tank and a second film removal sub-tank are provided on the film removal tank, and the first film removal sub-tank is connected to the isolation sub-tank and the second film removal sub-tank respectively;

[0008] A spray pipe assembly is mounted on the first defilm removal sub-tank and connected to the defilm removal tank, and is used to spray the defilm removal liquid in the defilm removal tank so that the sprayed defilm removal liquid enters the first defilm removal sub-tank.

[0009] A circulating filtration assembly is disposed between the second membrane removal sub-tank and the isolation sub-tank, for filtering the membrane removal liquid that enters the second membrane removal sub-tank through the first membrane removal sub-tank, and transferring the filtered membrane removal liquid to the isolation sub-tank.

[0010] As a further improvement of this application, the spray pipe assembly includes a plurality of first spray pipes and second spray pipes arranged along a first direction and connected to the film removal tank, and each of the first spray pipes and the second spray pipes is provided with a plurality of nozzles for spraying film removal liquid along its length direction, so as to spray the film removal liquid in the film removal tank to the first film removal auxiliary tank through the nozzles.

[0011] As a further improvement of this application, the circulating filtration assembly includes an inlet pipe, a filter barrel connected to the inlet pipe, and an outlet pipe connected to the filter barrel and the isolation sub-tank respectively. The filter barrel is provided with a filter screen for filtering the membrane removal liquid.

[0012] As a further improvement of this application, the filter screen is inclinedly disposed inside the filter barrel to divide the interior of the filter barrel into a first receiving cavity connected to the liquid inlet pipe and a second receiving cavity connected to the liquid outlet pipe.

[0013] The circulating filtration assembly further includes an extractor connected to the first receiving cavity, the extractor being used to extract filter residue from the first receiving cavity.

[0014] As a further improvement of this application, an inlet valve is provided on the inlet pipe, and a drain pipe is provided between the second defilm removal sub-tank and the defilm removal tank, with a drain valve provided on the drain pipe.

[0015] As a further improvement of this application, a circulation pump is provided between the liquid outlet pipe and the filter barrel, and a regulating valve is provided on the liquid outlet pipe.

[0016] As a further improvement of this application, the first defilm removal sub-tank is arranged adjacent to the isolation sub-tank and the second defilm removal sub-tank respectively, and a first overflow port is provided between the first defilm removal sub-tank and the isolation sub-tank, and a second overflow port is provided between the first defilm removal sub-tank and the second defilm removal sub-tank.

[0017] This application also provides a membrane removal device, which includes the membrane removal liquid filtration structure described in any of the above claims, wherein a water washing tank and a drying tank are provided on the side of the membrane removal tank away from the isolation tank along a first direction;

[0018] The water washing tank is used to wash the battery cells after the film has been removed, and the drying tank is used to dry the washed battery cells.

[0019] As a further improvement of this application, a plurality of first lower rollers are provided on the isolation sub-groove along the first direction to transfer the battery cell to the top of the first film removal sub-groove via the plurality of first lower rollers;

[0020] The first stripping groove is provided with a plurality of second lower rollers and a second upper roller corresponding to the second lower rollers along the first direction. The second upper rollers and the second lower rollers are used to clamp the battery cells so that the battery cells are transported along the first direction.

[0021] The first spray pipe is located above the second upper roller, and the second spray pipe is located between the first film removal sub-tank and the second lower roller.

[0022] As a further improvement of this application, the height of the film-removing liquid in the isolation sub-tank does not exceed the upper surface of the first lower roller.

[0023] The membrane removal liquid filtration structure and membrane removal device provided in this application embodiment are as follows: An isolation sub-tank is provided on the isolation tank, and a first membrane removal sub-tank and a second membrane removal sub-tank are provided on the membrane removal tank. This allows the spray pipe assembly to spray the membrane removal liquid from the membrane removal tank onto the upper and lower sides of the battery cell. The sprayed membrane removal liquid enters the first membrane removal sub-tank. Since the first membrane removal sub-tank is connected to the isolation sub-tank and the second membrane removal sub-tank, the sprayed membrane removal liquid enters the second membrane removal sub-tank. The membrane removal liquid is filtered by a circulating filtration assembly provided between the second membrane removal sub-tank and the isolation sub-tank. The filtered membrane removal liquid then passes through the isolation sub-tank back into the first membrane removal sub-tank, and this reciprocating circulation achieves filtration of the membrane removal liquid. This prevents the presence of impurities in the membrane removal liquid, which could lead to incomplete membrane removal on the battery cell surface, resulting in issues such as grid line loss or breakage. It also prevents impurities from adhering to the rollers, causing battery fragmentation and cell blockage, thereby improving production line capacity and ensuring the service life of the machine. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the membrane removal liquid filtration structure provided in the embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the circulating filtration component in the membrane removal liquid filtration structure provided in the embodiments of this application;

[0027] Figure 3 This is a schematic diagram of the filter barrel in the membrane removal liquid filtration structure provided in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram of the spray pipe assembly in the membrane removal liquid filtration structure provided in the embodiments of this application;

[0029] Figure 5 This is a schematic diagram of the structure of the film removal device provided in the embodiments of this application;

[0030] Explanation of reference numerals in the attached figures:

[0031] 10-Isolation groove; 11-Isolation secondary groove; 12-First overflow port; 13-First lower roller;

[0032] 20 - Film removal tank; 21 - First film removal auxiliary tank; 22 - Second film removal auxiliary tank; 23 - Second overflow port; 24 - Second upper roller; 25 - Second lower roller;

[0033] 30-Spray pipe assembly; 31-First spray pipe; 32-Second spray pipe; 33-Third spray pipe; 34-Fourth spray pipe; 35-Nozzle; 36-First pipeline; 37-Second pipeline; 38-Third pipeline; 39-Fourth pipeline;

[0034] 40-Circulating filter assembly; 41-Inlet pipe; 411-Inlet valve; 42-Filter barrel; 421-Filter screen; 422-First receiving cavity; 423-Second receiving cavity; 43-Outlet pipe; 431-Regulating valve; 44-Ejector; 441-First extraction pipe; 442-Second extraction pipe; 45-Drain pipe; 451-Drain valve; 46-Circulating pump; 47-Collection barrel; 48-Trapezoidal velocity equalization device;

[0035] 50 - Washing tank; 51 - Third upper roller; 52 - Third lower roller;

[0036] 60 - Drying tank; 61 - Fourth lower roller;

[0037] 100-cell battery. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0039] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0040] To make the description of this disclosure more detailed and complete, illustrative descriptions of the implementation methods and specific embodiments of this application are provided below; however, this is not the only form of implementing or utilizing the specific embodiments of this application. The implementation methods cover the features of multiple specific embodiments and the method steps and their order for constructing and operating these specific embodiments. However, other specific embodiments may also be used to achieve the same or equivalent functions and step sequences.

[0041] Please refer to Figures 1-5 This application provides a membrane removal solution filtration structure and membrane removal device for circulating and filtering the membrane removal solution, preventing cell fragmentation and improving the membrane removal efficiency of the production line. Please refer to... Figure 1 This is a schematic diagram of the membrane removal liquid filtration structure provided in the embodiments of this application. The membrane removal liquid filtration structure provided in this application includes an isolation tank 10, a membrane removal tank 20, a spray pipe assembly 30, and a circulating filtration assembly 40.

[0042] As an optional implementation, this application provides an isolation sub-groove 11 on the isolation groove 10 and a first film removal sub-groove 21 and a second film removal sub-groove 22 on the film removal groove 20, such that the first film removal sub-groove 21 is connected to the isolation sub-groove 11 and the second film removal sub-groove 22 respectively.

[0043] It should be noted that the above-mentioned provision of an isolation sub-groove 11 on the isolation groove 10 means that the isolation sub-groove 11 is mounted on the isolation groove 10 and there is a certain gap between the isolation sub-groove 11 and the isolation groove 10. Similarly, the provision of a first film removal sub-groove 21 and a second film removal sub-groove 22 on the film removal groove 20 means that the first film removal sub-groove 21 and the second film removal sub-groove 22 are mounted above the film removal groove 20 and there is a certain gap between the first film removal sub-groove 21 and the second film removal sub-groove 22.

[0044] Please refer to Figure 2 This is a schematic diagram of the circulating filtration component 40 in the membrane removal liquid filtration structure provided in this application embodiment. In this application, the first membrane removal sub-tank 21, the isolation sub-tank 11, and the second membrane removal sub-tank 22 are connected. This can be done by directly connecting the first membrane removal sub-tank 21 and the isolation sub-tank 11 through a pipe, or by directly connecting the first membrane removal sub-tank 21 and the second membrane removal sub-tank 22 through a pipe. Alternatively, an overflow port for liquid flow can be provided between the first membrane removal sub-tank 21 and the isolation sub-tank 11, and an overflow port for flow can be provided between the first membrane removal sub-tank 21 and the second membrane removal sub-tank 22. Both the pipe and overflow port configuration methods are feasible.

[0045] In a preferred embodiment provided in this application, please continue to refer to... Figure 2Preferably, the first defilm removal sub-tank 21 and the isolation sub-tank 11 are arranged adjacent to each other, and the first defilm removal sub-tank 21 and the second defilm removal sub-tank 22 are arranged adjacent to each other. A first overflow port 12 is provided between the first defilm removal sub-tank 21 and the isolation sub-tank 11, and a second overflow port 23 is provided between the first defilm removal sub-tank 21 and the second defilm removal sub-tank 22. The connection between the isolation sub-tank 11, the first defilm removal sub-tank 21 and the second defilm removal sub-tank 22 is achieved by setting the first overflow port 12 and the second overflow port 23. Of course, other arrangement methods are also feasible, and this application does not impose further restrictions on them.

[0046] Furthermore, in this application, the spray pipe assembly 30 is mounted on the first decoction sub-tank 21 and connected to the decoction tank 20. Since the decoction tank 20 contains a decoction liquid for removing the adhesive film on the surface of the battery cell 100, and the battery cell 100 is transported along the first direction to the top of the first decoction sub-tank 21, the spray pipe assembly 30 can be connected to the decoction tank 20 to spray the decoction liquid in the decoction tank 20 onto the battery cell 100 transported on the first decoction sub-tank 21. The sprayed decoction liquid will then flow further into the first decoction sub-tank.

[0047] As an optional implementation, this application places the aforementioned circulating filtration assembly 40 between the second membrane removal sub-tank 22 and the isolation sub-tank 11. Since the sprayed membrane removal liquid enters the first membrane removal sub-tank 21, and the first membrane removal sub-tank 21 is connected to the second membrane removal sub-tank 22, the membrane removal liquid will enter the second membrane removal sub-tank 22 through the first membrane removal sub-tank 21. The circulating filtration assembly 40 located between the second membrane removal sub-tank 22 and the isolation sub-tank 11 filters the membrane removal liquid entering the second membrane removal sub-tank 22, and then transfers the filtered membrane removal liquid to the second membrane removal sub-tank 22. The solution is fed into the isolation sub-tank 11. The membrane removal solution entering the isolation sub-tank 11 is the filtered membrane removal solution. The filtered membrane removal solution re-enters the first membrane removal sub-tank 21 and the second membrane removal sub-tank 22, and is filtered again by the circulating filter assembly 40 before entering the isolation sub-tank 11. This cycle is repeated to filter the membrane removal solution and prevent fragments and other solid residues in the membrane removal solution from affecting the membrane removal effect. Otherwise, the membrane removal on the surface of the solar cell 100 will not be clean, resulting in problems such as grid line drop or breakage, which will affect the production efficiency of the solar cell 100.

[0048] In the embodiments of this application, please refer to Figure 4This is a schematic diagram of the spray pipe assembly 30 in the membrane removal liquid filtration structure provided in this application embodiment. The spray pipe assembly 30 includes a plurality of first spray pipes 31 and second spray pipes 32 arranged along a first direction and connected to the membrane removal liquid sub-tank. The first direction can be understood as the transmission direction of the battery cell 100 during the membrane removal process. It can be observed that each first spray pipe 31 and second spray pipe 32 is provided with a plurality of nozzles 35 for spraying membrane removal liquid along its length direction, so as to spray the membrane removal liquid in the membrane removal tank 20 to the first membrane removal sub-tank 21 through the nozzles 35.

[0049] Specifically, taking the plane where the battery cell 100 is located as a reference, the first spray pipe 31 and the second spray pipe 32 need to be respectively set on the upper and lower sides of the battery cell 100 to spray and clean the upper and lower sides of the battery cell 100. This application provides a pipeline structure on one side of the decoction tank 20 for connecting the first spray pipe 31 and the second spray pipe 32. The pipeline structure includes a first pipeline 36 connected to the decoction tank 20, a second pipeline 37 arranged in the vertical direction, a third pipeline 38 connected to the first spray pipe 31, and a fourth pipeline 32 connected to the second spray pipe 32. 9. The first pipeline 36 is connected to the second pipeline 37. The second pipeline 37 is connected to the third pipeline 38 and the fourth pipeline 39 respectively. Thus, the decoction liquid in the decoction tank 20 is transmitted to the first spray pipe 31 and the second spray pipe 32 through the first pipeline 36, the second pipeline 37, the third pipeline 38 and the fourth pipeline 39. Then, it is sprayed onto the battery cell 100 through a number of nozzles 35 provided on the first spray pipe 31 and the second spray pipe 32 to perform decoction treatment on the battery cell 100. The sprayed decoction liquid will flow into the first decoction auxiliary tank 21.

[0050] In an optional embodiment, the above-mentioned circulating filtration assembly 40 includes a filter tank 42, an inlet pipe 41, and an outlet pipe 43 connected to the isolation sub-tank 11. A filter screen 421 for filtering the membrane removal liquid is provided in the filter tank 42. Since the membrane removal liquid sprayed in the first membrane removal sub-tank 21 will enter the second membrane removal sub-tank 22, it will be further drawn into the filter tank 42 through the inlet pipe 41 located between the second membrane removal sub-tank 22 and the isolation sub-tank 11. The membrane removal liquid is filtered by the filter screen 421 in the filter tank 42. The outlet pipe 43 is connected to the filter tank 42 and the isolation sub-tank 11 respectively, so that the membrane removal liquid filtered by the filter screen 421 in the filter tank 42 will enter the isolation sub-tank 11 through the outlet pipe 43, thereby realizing the filtration and circulation of the membrane removal liquid.

[0051] For details, please refer to Figure 3This is a schematic diagram of the filter barrel 42 in the membrane removal liquid filtration structure provided in this application embodiment. In this application, the filter screen 421 is inclinedly arranged in the filter barrel 42, thereby dividing the interior of the filter barrel 42 into a first receiving cavity 422 connected to the inlet pipe 41 and a second receiving cavity 423 connected to the outlet pipe 43. At this time, the membrane removal liquid enters the first receiving cavity 422 through the inlet pipe 41. The residue filtered in the membrane removal liquid will be retained in the first receiving cavity 422. The filtered liquid enters the second receiving cavity 423 and then enters the isolation sub-tank 11 through the outlet pipe 43.

[0052] Prolonged filtration can cause filter residue to clog the first receiving cavity 422, affecting the cleaning and filtration effect of the membrane removal solution. Therefore, this application also provides an extractor 44 for extracting the filter residue. The extractor 44 is connected to the first receiving cavity 422 through a first extraction pipe 441. The extractor 44 extracts the filter residue in the first receiving cavity 422. A collection bucket 47 is also provided for collecting the filter residue. The collection bucket 47 is connected to the extractor 44 through a second extraction pipe 442. At this time, the filter residue remaining in the first receiving cavity 422 will sequentially enter the collection bucket 47 through the first extraction pipe 441, the extractor 44, and the second extraction pipe 442, thereby effectively cleaning the filter residue in the first receiving cavity 422 and preventing it from clogging and affecting the filtration effect.

[0053] As an optional implementation, this application provides an inlet valve 411 on the inlet pipe 41 to control whether the inlet pipe 41 needs to be filled with liquid, and provides a drain pipe 45 between the second defilm removal sub-tank 22 and the defilm removal tank 20, and provides a drain valve 451 on the drain pipe 45.

[0054] Thus, the opening and closing of the inlet valve 411 and the outlet valve 451 can be controlled according to the current filtration status and the current volume of the demembranes in the second demembranes sub-tank 22. The inlet valve 411 can be set to be open and the outlet valve 451 to be closed for a preset time. At this time, the demembranes in the second demembranes sub-tank 22 will enter the circulating filtration assembly 40 for filtration. When the preset time ends, the inlet valve 411 is set to be closed and the outlet valve 451 is set to be open, so that the demembranes in the second demembranes sub-tank 22 after multiple filtrations enter the demembranes tank 20. Since the first spray pipe 31 and the second spray pipe 32 are connected in the demembranes tank 20, the demembranes after multiple filtrations will be sprayed onto the battery cell 100 through the first spray pipe 31 and the second spray pipe 32, and then flow back into the first demembranes sub-tank 21. This process of filtering and recycling of the demembranes is repeated multiple times.

[0055] Of course, the desiccant in the second desiccant tank 22 can also be tested using appropriate instruments. When it is determined that the residue inside is less than the standard value, the drain valve 451 is opened and the inlet valve 411 is closed, so that the desiccant in the second desiccant tank 22 that meets the standard enters the desiccant tank 20 through the drain pipe 45. The above methods, whether by opening the drain valve 451 at a preset time or by directly testing the desiccant in the second desiccant tank 22, are all feasible, and this application does not impose too many restrictions on them.

[0056] It should be noted that only one of the above-mentioned inlet valve 411 and outlet valve 451 can be opened at the same time, and the other must be closed to prevent unfiltered membrane stripping solution from entering the membrane stripping tank 20 and affecting the membrane stripping effect on the battery cell 100.

[0057] Preferably, this application also provides a circulation pump 46 between the outlet pipe 43 and the filter tank 42, a regulating valve 431 on the outlet pipe 43, and a trapezoidal uniform velocity flow device between the outlet pipe 43 and the isolation sub-tank 11 to prevent the membrane removal liquid from flowing back in the pipeline and to ensure the circulation filtration and flow direction of the membrane removal liquid.

[0058] Based on the above-mentioned membrane removal liquid filtration structure for circulating filtration of the membrane removal liquid, this application also provides a membrane removal device for removing the membrane from the battery cell 100. Please refer to... Figure 5 This is a schematic diagram of the structure of the membrane removal device provided in the embodiment of this application. The membrane removal device includes the above-mentioned membrane removal liquid filtration structure. Furthermore, this application provides a plurality of first lower rollers 13 on the membrane removal sub-tank along the first direction, which is the transmission direction of the battery cell 100. The battery cell 100 is transmitted to the top of the first membrane removal sub-tank 21 through the plurality of first lower rollers 13.

[0059] Furthermore, this application also provides a plurality of second lower rollers 25 and second upper rollers 24 corresponding to the second lower rollers 25 along the first direction on the first decoction sub-tank 21. At this time, the battery cell 100 entering the first decoction sub-tank 21 will sequentially enter between the second upper roller 24 and the second lower roller 25. The second upper roller 24 and the second lower roller 25 clamp the battery cell 100 and make it transport along the first direction. During the transport process, the first spray pipe 31 and the second spray pipe 32 set on the upper and lower sides of the battery cell 100 spray the battery cell 100 with decoction liquid, so that the battery cell 100 can complete the decoction operation while being transported along the first direction.

[0060] In this embodiment of the application, it is preferable to place the first spray pipe 31 above the second upper roller 24 and the second spray pipe 32 between the first film removal sub-groove 21 and the second lower roller 25. This arrangement can achieve spraying of the battery cell 100 without affecting the transmission of the battery cell 100 between the second upper roller 24 and the second lower roller 25.

[0061] It should be noted that since the defilm removal solution will enter the first defilm removal sub-tank 21 through the isolation sub-tank 11, it is necessary to limit the height of the defilm removal solution in the isolation sub-tank 11 to not exceed the upper surface of the first lower roller 13. This can also be understood as the battery cell 100 not being able to contact the defilm removal solution in the isolation sub-tank 11. When the height of the defilm removal solution may contact the battery cell 100, the drain valve 451 should be opened to allow the filtered liquid to flow into the defilm removal tank 20.

[0062] As an optional implementation, this application further provides a washing tank 50 and a drying tank 60 along the first direction on the side of the stripping tank 20 away from the isolation tank 10. The stripped battery cell 100 is washed with water through the washing tank 50 and dried through the drying tank 60. After the battery cell 100 is sprayed with stripping liquid through the first stripping auxiliary tank 21, it will enter the washing tank 50 and the drying tank 60 along the first direction for corresponding processing.

[0063] Furthermore, this application also provides a third upper roller 51 and a third lower roller 52 on the washing tank 50. A third spray pipe 33 is provided on the third upper roller 51, and a fourth spray pipe 34 is provided between the third lower roller 52 and the washing tank 50. The third spray pipe 33 and the fourth spray pipe 34 are connected to the washing tank 50. A plurality of nozzles 35 for spraying liquid are provided on the third spray pipe 33 and the fourth spray pipe 34 along their length. For the description of the third spray pipe 33 and the fourth spray pipe 34, please refer to the relevant description of the first spray pipe 31 and the second spray pipe 32. The difference is that the first spray pipe 31 and the second spray pipe 32 spray a film-removing liquid for film removal, while the third spray pipe 33 and the fourth spray pipe 34 spray a cleaning liquid. This will not be elaborated further here, and those skilled in the art should know it.

[0064] Furthermore, this application also provides several fourth lower rollers 61 along the first direction on the drying tank 60. At this time, the cleaned battery cell 100 will enter the drying tank 60 along the first direction, and the battery cell 100 will be transported along the first direction by the fourth lower rollers 61 for subsequent processing operations.

[0065] For other details regarding the membrane removal device in implementing the above technical solution, please refer to the description in the membrane removal liquid filtration structure provided in the above application embodiments, which will not be repeated here.

[0066] This application provides an isolation tank 10, a film removal tank 20, a water tank, and a drying tank 60 arranged along a first direction. The isolation tank 10 isolates the film removal liquid in the film removal tank 20. A first lower roller 13 is provided on the isolation tank 10, a second upper roller 24 and a second lower roller 25 are provided on the film removal tank 20, a third upper roller 51 and a third lower roller 52 are provided on the water washing tank 50, and a fourth lower roller 61 is provided on the drying tank 60. This allows the battery cell 100 to be transported along the first direction in the film removal device. During the transport, the film removal liquid is used to remove the film from the battery cell. The film removal treated battery cell 100 is cleaned with a cleaning liquid. After cleaning, the battery cell 100 is dried to obtain the desired film-removed battery cell 100.

[0067] Furthermore, this application provides an isolation sub-channel 11 on the isolation channel 10 and a first defilm removal sub-channel 21 and a second defilm removal sub-channel 22 on the defilm removal channel 20. This allows the spray pipe assembly 30 to spray the defilm removal liquid in the defilm removal channel 20 onto the upper and lower sides of the battery cell 100. The sprayed defilm removal liquid enters the first defilm removal sub-channel 21. Since the first defilm removal sub-channel 21 is connected to the isolation sub-channel 11 and the second defilm removal sub-channel 22, the sprayed defilm removal liquid will enter the second defilm removal sub-channel 22. The defilm removal liquid is filtered by the circulating filter assembly 40 provided between the second defilm removal sub-channel 22 and the isolation sub-channel 11. The filtered defilm removal liquid then passes through the isolation sub-channel 11 and enters the first defilm removal sub-channel 21 again. This reciprocating circulation achieves filtration of the defilm removal liquid, preventing the presence of impurities in the defilm removal liquid from causing incomplete defilm removal on the surface of the battery cell 100, resulting in issues such as grid line loss or breakage.

[0068] Furthermore, this application provides an inlet valve 411 on the inlet pipe 41 and a drain valve 451 on the drain pipe 45. When there is too much filter residue in the filter tank 42, the drain valve 451 is opened and the inlet valve 411 is closed. The impurities in the filter tank 42 are extracted by the extractor 44. At this time, the filtered liquid will enter the membrane removal tank 20 through the drain pipe 45 and spray the battery cell 100 again through the spray pipe assembly 30. This realizes the filtration and recycling of the membrane removal liquid, effectively saving filtration and cleaning costs. Moreover, this setting can prevent impurities in the membrane removal liquid from remaining on the rollers and the machine, which would cause the transmission gears and rollers in the machine to become too heavy and cause the device to malfunction. It also prevents impurities from adhering to the rollers and causing blockage and fragmentation of the battery cell 100, thereby improving the production line capacity and ensuring the service life of the machine.

[0069] It is understood that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, 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.

[0070] The above embodiments are merely exemplary implementations used to illustrate the principles of this application; however, this application is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this application, and these modifications and improvements are also considered to be within the scope of protection of this application.

Claims

1. A stripping solution filtration structure, characterized by, It includes: An isolation groove, wherein an isolation sub-groove is provided on the isolation groove; A film removal tank, wherein a first film removal sub-tank and a second film removal sub-tank are provided on the film removal tank, and the first film removal sub-tank is connected to the isolation sub-tank and the second film removal sub-tank respectively; A spray pipe assembly is mounted on the first defilm removal sub-tank and connected to the defilm removal tank, and is used to spray the defilm removal liquid in the defilm removal tank so that the sprayed defilm removal liquid enters the first defilm removal sub-tank. A circulating filtration assembly is disposed between the second membrane removal sub-tank and the isolation sub-tank, for filtering the membrane removal liquid that enters the second membrane removal sub-tank through the first membrane removal sub-tank, and transferring the filtered membrane removal liquid to the isolation sub-tank.

2. The stripper solution filtration structure of claim 1, wherein, The spray pipe assembly includes a plurality of first spray pipes and second spray pipes arranged along a first direction and connected to the film removal tank. Each of the first spray pipes and the second spray pipes is provided with a plurality of nozzles for spraying film removal liquid along its length direction, so as to spray the film removal liquid in the film removal tank to the first film removal auxiliary tank through the nozzles.

3. The stripper solution filtration structure of claim 1, wherein, The circulating filtration assembly includes an inlet pipe, a filter barrel connected to the inlet pipe, and an outlet pipe connected to the filter barrel and the isolation sub-tank respectively. The filter barrel is provided with a filter screen for filtering the membrane removal liquid.

4. The stripper solution filtration structure of claim 3, wherein, The filter screen is inclined inside the filter bucket to divide the interior of the filter bucket into a first receiving cavity connected to the liquid inlet pipe and a second receiving cavity connected to the liquid outlet pipe. The circulating filtration assembly further includes an extractor connected to the first receiving cavity, the extractor being used to extract filter residue from the first receiving cavity.

5. The membrane-removing liquid filtration structure as described in claim 3, characterized in that, An inlet valve is provided on the inlet pipe, and a drain pipe is provided between the second film removal sub-tank and the film removal tank, with a drain valve provided on the drain pipe.

6. The membrane-removing liquid filtration structure as described in claim 3, characterized in that, A circulation pump is installed between the liquid outlet pipe and the filter barrel, and a regulating valve is installed on the liquid outlet pipe.

7. The membrane-removing liquid filtration structure as described in claim 1, characterized in that, The first defilm removal sub-tank is arranged adjacent to the isolation sub-tank and the second defilm removal sub-tank respectively, and a first overflow port is provided between the first defilm removal sub-tank and the isolation sub-tank, and a second overflow port is provided between the first defilm removal sub-tank and the second defilm removal sub-tank.

8. A film removal device, characterized in that, Includes the membrane removal fluid filtration structure as described in any one of claims 1-7; The side of the membrane removal tank away from the isolation tank is provided with a washing tank and a drying tank along the first direction; The water washing tank is used to wash the battery cells after the film has been removed, and the drying tank is used to dry the washed battery cells.

9. The film removal device as described in claim 8, characterized in that, The isolation sub-groove is provided with a plurality of first lower rollers along the first direction to transfer the battery cells to the top of the first film removal sub-groove via the plurality of first lower rollers; The first stripping groove is provided with a plurality of second lower rollers and a second upper roller corresponding to the second lower rollers along the first direction. The second upper rollers and the second lower rollers are used to clamp the battery cells so that the battery cells are transported along the first direction. The first spray pipe is located above the second upper roller, and the second spray pipe is located between the first film removal sub-tank and the second lower roller.

10. The film removal device as described in claim 9, characterized in that, The height of the film-removing liquid in the isolation sub-tank does not exceed the upper surface of the first lower roller.

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