Pole piece recycling mechanism, pole piece recycling method and battery disassembly system

Abstract

The present application provides a pole piece recovery mechanism, a pole piece recovery method and a battery disassembly system, wherein the pole piece recovery mechanism includes a base and a fixed component, a winding component, an adsorption component, a material receiving component and a pulling component which are sequentially arranged on the base along the transmission direction of the diaphragm and the pole piece. The pole piece recovery mechanism provided by the present application has a clamping part that clamps the diaphragm and moves, and then the adsorption component approaches the diaphragm so that the adsorption component adsorbs the diaphragm; then the adsorption component moves with the diaphragm and transports the diaphragm to the winding component; then the fixed component clamps the diaphragm and the pole piece; then the winding component starts to wind, at which time the pole piece is spit out forward driven by the diaphragm and enters the material receiving component to complete the recovery of the pole piece; the above structure is simple and compact, easy to use, more convenient to operate, shortens the operation time, helps to reduce the operation intensity of workers, and can effectively and quickly separate the diaphragm from the pole piece.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a pole piece recycling mechanism, a pole piece recycling method and a battery disassembly system. Background Art

[0002] Lithium batteries contain a large amount of metal components, which can be recycled. The positive electrode sheet, film and negative electrode sheet inside the lithium battery are wound together. In the prior art, the recycling of lithium batteries is carried out by crushing the whole battery. Due to the different materials of the positive electrode sheet, negative electrode sheet and film inside the lithium battery, crushing the lithium battery as a whole makes the subsequent separation work more difficult, and the purity of the separated valuable metals is not high, which increases the recycling cost. Summary of the invention

[0003] The purpose of the present application is to provide a battery cell disassembly mechanism, a pole piece recovery method and a battery disassembly system which have a simple and compact structure and can effectively separate the diaphragm and the pole piece.

[0004] To achieve the above-mentioned objectives, an embodiment of the first aspect of the present application provides a pole piece recovery mechanism for separating the diaphragm and the pole piece, which includes a base and a fixing component, a winding component, an adsorption component, a material receiving component and a pulling component arranged on the base in sequence along the transmission direction of the diaphragm and the pole piece; wherein the fixing component includes an upper pressure plate and a lower pressure plate arranged opposite to each other, a first channel for the diaphragm and the pole piece to pass through is formed between the upper pressure plate and the lower pressure plate, the upper pressure plate and the lower pressure plate can move relative to each other to change the distance between the upper pressure plate and the lower pressure plate, and the upper pressure plate and the lower pressure plate are configured to press against the diaphragm and the pole piece; the winding component includes an upper rolling device and a lower rolling device arranged opposite to each other, a second channel for the diaphragm and the pole piece to pass through is formed between the upper rolling device and the lower rolling device; the adsorption component includes an upper suction plate and a lower suction plate arranged opposite to each other A suction plate, a third channel for the diaphragm and the electrode piece to pass through is formed between the upper suction plate and the lower suction plate, the upper suction plate and the lower suction plate can move on the base to change the distance between the upper suction plate and the lower suction plate, the upper suction plate is configured to absorb the upper diaphragm and transport the upper diaphragm to the upper winding device, the lower suction plate is configured to absorb the lower diaphragm and transport the lower diaphragm to the lower winding device; the material receiving assembly includes a material receiving plate, the material receiving plate is movably mounted on the base, and the feeding end of the material receiving plate corresponds to the first channel; the pulling assembly includes a clamping part and a driving device, the clamping part is movably mounted on the base, the driving device drives the clamping part to move on the base, and the clamping part is configured to clamp the diaphragm and the electrode piece to pass through the first channel, the second channel and the third channel in sequence.

[0005] Compared with the prior art, the above technical solution has the following advantages:

[0006] The clamping part clamps one end of the diaphragm and the electrode piece, and passes through the first channel, the second channel and the third channel in sequence under the drive of the driving device, and then the upper suction plate and the lower suction plate approach the diaphragm respectively, so that the upper suction plate adsorbs the upper diaphragm and the lower suction plate adsorbs the lower diaphragm; then the upper suction plate moves with the upper diaphragm and conveys the upper diaphragm to the upper winding device, and the lower suction plate moves with the lower diaphragm and conveys the lower diaphragm to the lower winding device; then the upper pressing plate and the lower pressing plate move relative to each other and abut against each other to clamp the diaphragm and the electrode piece, and at the same time, the receiving plate moves to the outlet of the first channel; then the upper winding device starts to wind the upper diaphragm, and the lower winding device starts to wind the lower diaphragm. At this time, the electrode piece is spit out forward driven by the upper diaphragm and the lower diaphragm, and enters the receiving plate to complete the recovery of the electrode piece; the above structure is simple and compact, easy to use, more convenient to operate, shortens the operation time, is conducive to reducing the operating intensity of workers, and can effectively and quickly separate the diaphragm from the electrode piece.

[0007] An embodiment of the second aspect of the present application provides a battery disassembly system, including the above-mentioned electrode recovery mechanism.

[0008] Compared with the prior art, the above technical solution has the following advantages:

[0009] The battery disassembly system has a simple and compact structure, is easy to use and more convenient to operate. In addition, it can effectively and quickly separate the diaphragm from the pole piece.

[0010] The third aspect of the present application provides a method for recycling a pole piece, which comprises the following steps:

[0011] Fix the diaphragm and the pole piece;

[0012] The pulling assembly clamps one end of the diaphragm and the electrode piece and passes through between the upper pressing plate and the lower pressing plate, between the upper rolling device and the lower rolling device, and between the upper suction plate and the lower suction plate in sequence, and moves to the first preset position;

[0013] The upper suction plate and the lower suction plate of the adsorption assembly are respectively close to the diaphragm and the electrode piece until they are pressed against the diaphragm and the electrode piece, the suction plate adsorbs the upper diaphragm, and the lower suction plate adsorbs the lower diaphragm, so that the diaphragm and the electrode piece are separated from the pulling assembly;

[0014] The upper suction plate and the lower suction plate move away from the diaphragm and the pole piece respectively, the upper suction plate transports the upper diaphragm to the upper winding device, and the lower suction plate transports the lower diaphragm to the lower winding device;

[0015] Fixing the upper diaphragm on the upper winding device and the lower diaphragm on the lower winding device, and separating the upper suction plate from the upper diaphragm and the lower suction plate from the lower diaphragm;

[0016] The upper pressing plate and the lower pressing plate are respectively moved toward the diaphragm and the pole piece until they are pressed against the diaphragm and the pole piece;

[0017] The upper winding device winds up the upper diaphragm, the lower winding device winds up the lower diaphragm, and the receiving plate approaches the upper pressing plate and the lower pressing plate and moves to set a second preset position;

[0018] After the upper diaphragm is completely rolled onto the upper rolling device, the upper diaphragm is removed from the upper rolling device and recovered, and after the lower diaphragm is completely rolled onto the lower rolling device, the lower diaphragm is removed from the lower rolling device and recovered.

[0019] Compared with the prior art, the above technical solution has the following advantages:

[0020] The pole piece recovery method is simple to operate, easy to use, more convenient to operate, shortens the operation time, helps to reduce the operating intensity of workers, and can effectively and quickly separate the diaphragm from the pole piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings are only intended to illustrate and explain the present application, and do not limit the scope of the present application.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the first embodiment of the pole piece recovery mechanism described in the present application;

[0023] Figure 2 yes Figure 1 A partial structural schematic diagram of a pole piece recovery mechanism is shown;

[0024] Figure 3 yes Figure 2 A schematic diagram of the structure shown in the first working state;

[0025] Figure 4 yes Figure 2 A schematic diagram of the structure shown in the second working state;

[0026] Figure 5 yes Figure 2 A schematic diagram of the structure shown in the third working state;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the second embodiment of the pole piece recovery mechanism described in the present application;

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the third embodiment of the pole piece recovery mechanism described in the present application;

[0029] Figure 8 is a partial structural schematic diagram of a first embodiment of the fixing assembly described in the present application;

[0030] Fig. 9 is a partial structural schematic diagram of a second embodiment of the fixing assembly described in the present application;

[0031] Fig.10 is a schematic diagram of the structure of the winding assembly described in the present application;

[0032] Fig.11 It is a flowchart of the electrode recycling method described in this application.

[0033] Description of Figure Numbers:

[0034] 10. Fixed assembly; 11. Upper pressure plate; 111. First moving member; 112. First plate body; 113. Upper pressure roller; 114. Upper elastic pad; 115. Upper guide roller; 12. Lower pressure plate; 121. Second moving member; 122. Second plate body; 123. Lower pressure roller; 124. Lower elastic pad; 125. Lower guide roller; 13. First channel; 20. Winding assembly; 21. Upper winding device; 211. Upper moving member; 212. Upper rotating member; 213. Upper winding needle; 214. Upper unloading member; 22. Lower winding device; 221. Lower moving member; 222. Lower rotating member ; 223, lower winding needle; 224, lower material withdrawal piece; 23, second channel; 30, adsorption component; 31, upper suction plate; 32, lower suction plate; 33, third channel; 34, upper lifting device; 35, lower lifting device; 40, material receiving component; 41, material receiving plate; 42, cutting device; 43, recycling box; 50, pulling component; 51, clamping part; 52, driving device; 60, cutting component; 61, moving component; 62, cutter; 70, separation component; 71, separation roller; 72, fourth channel; 80, heating component; 90, scraper; 100, diaphragm and electrode. DETAILED DESCRIPTION

[0035] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0036] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0037] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The following discussion provides multiple embodiments of the present application. Although each embodiment represents a single combination of the application, different embodiments of the present application can be replaced or combined, so the present application can also be considered to include all possible combinations of the same and / or different embodiments recorded. Therefore, if one embodiment includes A, B, C, and another embodiment includes a combination of B and D, then the present application should also be considered to include an embodiment containing one or more of all other possible combinations of A, B, C, D, although the embodiment may not be clearly recorded in the following text. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figures 1 to 5 As shown, the electrode sheet recovery mechanism for separating the diaphragm and the electrode sheet provided in the embodiment of the first aspect of the present application includes a base (not shown in the figure) and a fixing component 10, a winding component 20, an adsorption component 30, a material receiving component 40 and a pulling component 50 arranged on the base in sequence along the transmission direction of the diaphragm and the electrode sheet 100 (the diaphragm and the electrode sheet 100 are wound to form a battery cell).

[0039] The fixing assembly 10 includes an upper pressing plate 11 and a lower pressing plate 12 which are arranged opposite to each other.

[0040] A first channel 13 is formed between the upper pressing plate 11 and the lower pressing plate 12 for the diaphragm and the pole piece 100 to pass through. The upper pressing plate 11 and the lower pressing plate 12 can move relative to each other to change the distance between the upper pressing plate 11 and the lower pressing plate 12. The upper pressing plate 11 and the lower pressing plate 12 are configured to press against the diaphragm and the pole piece. Specifically, the upper pressing plate 11 and the lower pressing plate 12 can move relative to the base under the drive of the moving device, or one of the upper pressing plate 11 and the lower pressing plate 12 is fixed to the base (i.e., cannot move relative to the base), and the other moves relative to the base under the drive of the moving device.

[0041] The winding assembly 20 includes an upper winding device 21 and a lower winding device 22 which are arranged opposite to each other.

[0042] A second passage 23 is formed between the upper winding device 21 and the lower winding device 22 for the diaphragm and the pole piece 100 to pass through. Specifically, the upper winding device 21 has two upper winding needles, the upper diaphragm passes through the gap between the upper winding needles, and then the upper winding device 21 drives the two upper winding needles to rotate, so that the upper diaphragm is wound around the two upper winding needles. Similarly, the lower winding device 22 has two lower winding needles, the lower diaphragm passes through the gap between the lower winding needles, and then the lower winding device 22 drives the two lower winding needles to rotate, so that the lower diaphragm is wound around the two lower winding needles.

[0043] The adsorption assembly 30 includes an upper suction plate 31 and a lower suction plate 32 which are arranged opposite to each other.

[0044] A third passage 33 is formed between the upper suction plate 31 and the lower suction plate 32 for the diaphragm and the pole piece 100 to pass through. The upper suction plate 31 and the lower suction plate 32 can move on the base to change the distance between the upper suction plate 31 and the lower suction plate 32. The upper suction plate 31 is configured to absorb the upper diaphragm and transport the upper diaphragm to the upper winding device 21, and the lower suction plate 32 is configured to absorb the lower diaphragm and transport the lower diaphragm to the lower winding device 22. Specifically, the winding assembly 20 also includes an upper lifting device 34 and a lower lifting device 35. The upper suction plate 31 is disposed on the upper lifting device 34, and the upper lifting device 34 can drive the upper suction plate 31 to move relative to the base; the lower suction plate 32 is disposed under the lower lifting device 35, and the lower lifting device 35 can drive the lower suction plate 32 to move relative to the base.

[0045] The receiving assembly 40 includes a receiving plate 41 .

[0046] The receiving plate 41 is movably mounted on the base, and the feed end of the receiving plate 41 corresponds to the first channel 13. When the traction assembly pulls the diaphragm and the electrode piece to the position, the adsorption assembly needs to adsorb the diaphragm. At this time, the receiving plate is located in the gap between the upper pressing plate and the lower pressing plate, that is, the receiving plate is located on one side of the third channel, thereby avoiding the interference between the receiving plate and the upper pressing plate and the lower pressing plate. When the adsorption assembly separates the upper and lower diaphragms from the electrode piece, the receiving plate first moves into the third channel, and then the feed end of the receiving plate moves to the outlet of the first channel, so that the receiving plate collects the electrode piece separated from the upper and lower diaphragms.

[0047] The pulling assembly 50 includes a clamping portion 51 and a driving device 52. The clamping portion 51 is movably mounted on the base. The driving device 52 drives the clamping portion 51 to move on the base. The clamping portion 51 is configured to clamp the diaphragm and the pole piece 100 to pass through the first channel 13, the second channel 23 and the third channel 33 in sequence.

[0048] The electrode recovery mechanism provided in this application is as follows: Figure 2 As shown, the clamping portion 51 clamps one end of the diaphragm and the pole piece 100, and driven by the driving device 52, the diaphragm and the pole piece 100 pass through the first channel 13, the second channel 23 and the third channel 33 in sequence, as shown in FIG. Figure 3 As shown, the upper suction plate 31 and the lower suction plate 32 are respectively close to the diaphragm, so that the upper suction plate 31 absorbs the upper diaphragm and the lower suction plate 32 absorbs the lower diaphragm; Figure 4 As shown, the upper suction plate 31 then moves with the upper diaphragm and transports the upper diaphragm to the upper roll device 21, and the lower suction plate 32 moves with the lower diaphragm and transports the lower diaphragm to the lower roll device 22; Figure 5As shown, the upper pressure plate 11 and the lower pressure plate 12 then move relative to each other and abut against each other to clamp the diaphragm and the electrode 100. At the same time, the receiving plate 41 moves to the outlet of the first channel 13. Then the upper winding device 21 starts to wind the upper diaphragm, and the lower winding device 22 starts to wind the lower diaphragm. At this time, the electrode is spit out forward driven by the upper and lower diaphragms, and enters the receiving plate 41 to complete the recovery of the electrode. The above structure is simple and compact, easy to use, more convenient to operate, shortens the operation time, helps to reduce the operating intensity of workers, and can effectively and quickly separate the diaphragm from the electrode.

[0049] like Figures 1 to 5 As shown, in one embodiment of the present application, the material receiving component 40 further includes: a cutting device 42 and a recovery box 43 .

[0050] The cutting device 42 is fixed on the base and disposed adjacent to the discharge end of the receiving plate 41 . The cutting device 42 is configured to cut the pole pieces.

[0051] The recovery box 43 is disposed on the base and is arranged corresponding to the cutting device 42 .

[0052] The length of the pole piece separated from the diaphragm is relatively long. The pole piece coming out from the discharge end of the receiving plate 41 is cut into smaller pieces by the cutting device 42, and then the pieces enter the recycling box 43 to recycle the pole piece, so as to facilitate the subsequent unified recycling process.

[0053] like Figures 1 to 5 As shown, in one embodiment of the present application, the upper pressing plate 11 includes a first moving member 111 and a first plate body 112 .

[0054] The first plate body 112 is arranged on the first movable member 111, and the first movable member 111 is movably arranged on the base. The first movable member 111 can move along the transmission direction so that the first plate body 112 is located below the upper rolling device 21 or the first plate body 112 is located between the upper rolling device 21 and the upper suction plate 31.

[0055] In addition, the upper pressing plate 11 further includes an upper guide roller 115 , which is configured to contact the upper diaphragm so that the contact between the upper diaphragm and the upper pressing plate 11 is rolling friction, so that the upper diaphragm can be wound more smoothly by the upper winding device 21 .

[0056] The lower pressing plate 12 includes a second moving member 121 and a second plate body 122 .

[0057] The second plate body 122 is arranged on the second movable member 121, and the second movable member 121 is movably arranged on the base. The second movable member 121 can move along the transmission direction so that the second plate body 122 is located above the lower rolling device 22 or the second plate body 122 is located between the lower rolling device 22 and the lower suction plate 32.

[0058] In addition, the lower pressing plate 12 further includes a lower guide roller 125 , which is configured to contact the lower diaphragm so that the contact between the lower diaphragm and the lower pressing plate 12 is rolling friction, so that the lower diaphragm can be wound more smoothly by the lower winding device 22 .

[0059] After the upper suction plate 31 absorbs the upper diaphragm and the lower suction plate 32 absorbs the lower diaphragm, the first movable member 111 drives the first plate body 112 to move, so that the first plate body 112 is located below the upper rolling device 21 or the first plate body 112 is located between the upper rolling device 21 and the upper suction plate 31; at the same time, the second movable member 121 drives the second plate body 122 to move, so that the second plate body 122 is located above the lower rolling device 22 or the second plate body 122 is located between the lower rolling device 22 and the lower suction plate 32, even if the angle between the diaphragm separated from the pole piece and the diaphragm not separated from the pole piece is not greater than 90°, the pole piece and the diaphragm are easier to separate, thereby ensuring the separation efficiency of the pole piece and the diaphragm, and improving the working efficiency of the product.

[0060] like Figure 6 As shown, in one embodiment of the present application, a cutting component 60 is disposed between the adsorption component 30 and the pulling component 50 .

[0061] The cutting assembly 60 includes a moving assembly 61 and a cutter 62 .

[0062] The moving assembly 61 is disposed on the base, and the cutter 62 is disposed on the moving assembly 61 . The cutter 62 is configured to cut off the diaphragm and the pole piece 100 dragged by the pulling assembly 50 .

[0063] Since there is only a diaphragm at the front end of the diaphragm and the electrode 100, when the upper suction plate 31 absorbs the upper diaphragm and the lower suction plate 32 absorbs the lower diaphragm, the moving component 61 drives the cutter 62 to cut off the diaphragm at the front end, and then the upper suction plate 31 and the lower suction plate 32 move respectively to separate the diaphragm from the electrode, thereby exposing the electrode to complete the separation of the diaphragm and the electrode. The setting of the cutting component 60 avoids the diaphragm at the front end of the diaphragm and the electrode 100 being too long, resulting in the front end of the diaphragm being difficult to separate when separating the diaphragm and the electrode, thereby ensuring that the diaphragm and the electrode can be quickly separated, easy to use, and more convenient to operate. Specifically, the working process of the cutting component 60 is as follows: the clamping part 51 clamps one end of the diaphragm and the pole piece 100, and under the drive of the driving device 52, passes through the first channel 13, the second channel 23 and the third channel 33 in sequence, and then the upper suction plate 31 and the lower suction plate 32 approach the diaphragm respectively, so that the upper suction plate 31 absorbs the upper diaphragm and the lower suction plate 32 absorbs the lower diaphragm; then the moving component 61 drives the cutter 62 to move to cut off the diaphragm at the front end, and then the upper suction plate 31 moves with the upper diaphragm and transports the upper diaphragm to the upper winding device 21, and the lower suction plate 32 moves with the lower diaphragm and transports the lower diaphragm to the lower winding device 22.

[0064] like Figure 7 As shown, in one embodiment of the present application, the pole piece recovery mechanism further includes a separation assembly 70 . In the transmission direction, the separation assembly 70 is located on a side of the fixing assembly 10 away from the winding assembly 20 .

[0065] The separation assembly 70 includes a plurality of separation rollers 71 arranged in sequence along the transmission direction. Each separation roller 71 is arranged on a base and can rotate relative to the base. There is a gap between two adjacent separation rollers 71. The plurality of gaps are connected to form a fourth channel 72 through which the diaphragm and the pole piece pass.

[0066] After the diaphragm with the pole piece enters the fourth channel 72 of the separation component 70, it is rolled at different angles and arcs by multiple separation rollers 71 to invalidate the adhesive force between the diaphragm and the pole piece, so that the diaphragm and the pole piece are separated, that is, the diaphragm and the pole piece are easier to separate, thereby ensuring the separation efficiency of the pole piece and the diaphragm, and improving the working efficiency of the product.

[0067] like Figure 7 As shown, in one embodiment of the present application, the pole piece recovery mechanism further includes a heating component 80 .

[0068] In the transport direction, the heating assembly 80 is located on a side of the fixing assembly 10 away from the winding assembly 20 , and the heating assembly 80 is adapted to heat the diaphragm and the pole piece 100 .

[0069] The heating component 80 can heat the diaphragm and the electrode 100 to melt the glue between the diaphragm and the electrode, thereby reducing the bonding strength between the diaphragm and the electrode, making the diaphragm and the electrode easier to separate, thereby ensuring the separation efficiency of the electrode and the diaphragm and improving the work efficiency of the product.

[0070] like Figure 7 As shown, in one embodiment of the present application, a scraper 90 is provided at the inlet end of the receiving plate 41 .

[0071] The scraper 90 is configured to guide the pole piece to separate from the diaphragm.

[0072] The scraper 90 interferes with the electrode, so that the electrode is separated from the diaphragm along the scraper 90 and enters the receiving plate 41, so that the scraper 90 is fully separated from the diaphragm, ensuring the separation efficiency of the electrode and the diaphragm and improving the work efficiency of the product.

[0073] like Figure 8 As shown, in one embodiment of the present application, a plurality of upper pressing rollers 113 are provided on the plate surface of the upper pressing plate 11 that contacts the diaphragm, and the plurality of upper pressing rollers 113 are capable of rotating relative to the upper pressing plate 11 .

[0074] The multiple upper pressure rollers 113 roll on the diaphragm with the pole piece to invalidate the adhesive force between the diaphragm and the pole piece, so that the diaphragm and the pole piece are separated, that is, the diaphragm and the pole piece are easier to separate, thereby ensuring the separation efficiency of the pole piece and the diaphragm and improving the work efficiency of the product.

[0075] Similarly, a plurality of lower pressing rollers 123 are provided on the plate surface of the lower pressing plate 12 that contacts the diaphragm, and the plurality of lower pressing rollers 123 are capable of rotating relative to the lower pressing plate 12 .

[0076] The multiple lower pressure rollers 123 roll on the diaphragm with the pole piece to invalidate the adhesive force between the diaphragm and the pole piece, so that the diaphragm and the pole piece are separated, that is, the diaphragm and the pole piece are easier to separate, thereby ensuring the separation efficiency of the pole piece and the diaphragm and improving the work efficiency of the product.

[0077] like Fig. 9 As shown, in one embodiment of the present application, an upper elastic pad 114 is provided on the plate surface of the upper pressing plate 11 in contact with the diaphragm, and / or a lower elastic pad 124 is provided on the plate surface of the lower pressing plate 12 in contact with the diaphragm.

[0078] The setting of the upper elastic pad 114 makes the contact between the upper pressure plate 11 and the diaphragm elastic. On the one hand, it avoids damage to the diaphragm and ensures the integrity of the separation diaphragm. On the other hand, due to the squeezing of the upper pressure plate 11 and the lower pressure plate 12, the upper elastic pad 114 is deformed, so that the force-bearing surfaces of the diaphragm and the pole piece 100 are unevenly stressed, thereby making it easier to separate the diaphragm and the pole piece, ensuring the separation efficiency of the pole piece and the diaphragm, and improving the working efficiency of the product.

[0079] Similarly, the setting of the lower elastic pad 124 makes the contact between the lower pressure plate 12 and the diaphragm elastic. On the one hand, it avoids damage to the diaphragm and ensures the integrity of the separation diaphragm. On the other hand, due to the squeezing of the upper pressure plate 11 and the lower pressure plate 12, the lower elastic pad 124 is deformed, so that the force-bearing surfaces of the diaphragm and the pole piece 100 are unevenly stressed, thereby making it easier to separate the diaphragm and the pole piece, ensuring the separation efficiency of the pole piece and the diaphragm, and improving the working efficiency of the product.

[0080] like Fig.10 As shown, in one embodiment of the present application, the upper winding device 21 includes: an upper moving member 211 , an upper rotating member 212 and an upper winding needle 213 .

[0081] The upper moving member 211 is disposed on the base.

[0082] The upper rotating member 212 is disposed on the upper moving member 211 , and the upper moving member 211 can drive the upper rotating member 212 to enter or exit the upper gap between the upper suction plate 31 and the upper pressing plate 11 .

[0083] The upper winding needle 213 is disposed on the upper rotating member 212 , and the upper rotating member 212 can drive the upper winding needle 213 to rotate.

[0084] The lower winding device 22 includes a lower moving member 221 , a lower rotating member 222 and a lower winding needle 223 .

[0085] The lower moving member 221 is disposed on the base.

[0086] The lower rotating member 222 is disposed on the lower moving member 221 , and the lower moving member 221 can drive the lower rotating member 222 to enter or exit the lower gap between the lower suction plate 32 and the lower pressing plate 12 .

[0087] The lower winding needle 223 is disposed on the lower rotating member 222 , and the lower rotating member 222 can drive the lower winding needle 223 to rotate.

[0088] After the upper suction plate 31 moves into place with the upper diaphragm, the upper moving part 211 drives the upper rotating part 212 to enter the upper gap between the upper suction plate 31 and the upper pressure plate 11, and makes the upper winding needle 213 inserted on the upper diaphragm, and then the upper rotating part 212 drives the upper winding needle 213 to rotate to wind the upper diaphragm on the upper rotating part 212. When the upper diaphragm is completely wound on the upper winding needle 213, the upper moving part 211 drives the upper rotating part 212 to withdraw from the upper gap between the upper suction plate 31 and the upper pressure plate 11 to avoid the upper winding needle 213 and the upper suction plate 31 from occurring during the next pulling of the upper diaphragm by the upper suction plate 31. The above structure is simple, easy to operate, and can effectively complete the winding of the upper diaphragm. Similarly, after the lower suction plate 32 moves into place with the lower diaphragm, the lower moving part 221 drives the lower rotating part 222 to enter the lower gap between the lower suction plate 32 and the lower pressure plate 12, and makes the lower winding needle 223 inserted on the lower diaphragm, and then the lower rotating part 222 drives the lower winding needle 223 to rotate to wind the lower diaphragm on the lower winding needle 223. When the lower diaphragm is completely wound on the lower winding needle 223, the lower moving part 221 drives the upper rotating part 212 to withdraw from the lower gap between the lower suction plate 32 and the lower pressure plate 12 to avoid the occurrence of the lower winding needle 223 and the lower suction plate 32 during the next pulling of the lower diaphragm by the lower suction plate 32. The above structure is simple, easy to operate, and can effectively complete the winding of the lower diaphragm.

[0089] like Fig.10 As shown, in one embodiment of the present application, the upper roll-up device 21 further includes: an upper material-removing member 214 .

[0090] The upper stripping member 214 is disposed on the base and is located on the moving path of the upper rotating member 212 . The upper stripping member 214 is configured to remove the upper diaphragm on the upper winding needle 213 from the upper diaphragm.

[0091] The lower rolling device 22 further includes a lower material stripping member 224 .

[0092] The lower stripping member 224 is disposed on the base and is located on the moving path of the lower rotating member 222 . The lower stripping member 224 is configured to strip the lower diaphragm on the lower winding needle 223 therefrom.

[0093] When the upper diaphragm is completely wound on the upper winding needle 213, the upper moving part 211 drives the upper rotating part 212 to withdraw from the upper gap between the upper suction plate 31 and the upper pressure plate 11. Since the upper material stripping part 214 is located on the moving path of the upper rotating part 212, the upper material stripping part 214 interferes with the upper diaphragm on the upper winding needle 213, so that the upper diaphragm is detached from the upper winding needle 213. On the one hand, the automation of the product is improved and the recovery of the upper diaphragm is convenient. On the other hand, it is convenient for the upper winding needle 213 to effectively wind the previous upper diaphragm. Similarly, when the lower diaphragm is completely wound on the lower winding needle 223, the lower moving part 221 drives the upper rotating part 212 to withdraw from the lower gap between the lower suction plate 32 and the lower pressure plate 12. Since the lower material removal part 224 is located on the moving path of the lower rotating part 222, the lower material removal part 224 interferes with the lower diaphragm on the lower winding needle 223, so that the lower diaphragm is detached from the lower winding needle 223. On the one hand, the automation of the product is improved and the recovery of the lower diaphragm is convenient. On the other hand, it is convenient for the lower winding needle 223 to effectively wind the next lower diaphragm.

[0094] The specific working process of the electrode recovery mechanism is:

[0095] The diaphragm and the electrode piece are passed through the heating component so that the heating component heats the diaphragm and the electrode piece; then the diaphragm and the electrode piece are passed through a plurality of separation rollers in turn so that the plurality of separation rollers roll the diaphragm and the electrode piece; then the clamping part clamps one end of the diaphragm and the electrode piece, and driven by the driving device, the diaphragm and the electrode piece are passed through the first channel, the second channel and the third channel in turn, and then the upper suction plate and the lower suction plate approach the diaphragm respectively, so that the upper suction plate absorbs the upper diaphragm and the lower suction plate absorbs the lower diaphragm; then the moving component drives the cutter to move and cut off the front end of the diaphragm; then the upper suction plate moves with the upper diaphragm and transports the upper diaphragm to On the upper winding device, at the same time, the lower suction plate moves with the lower diaphragm and transports the lower diaphragm to the lower winding device; then the upper pressure plate and the lower pressure plate move relative to each other and press against each other to clamp the diaphragm and the electrode piece. At the same time, the receiving plate moves to the outlet of the first channel; then the winding needle of the upper winding device starts to wind the upper diaphragm, and the winding needle of the lower winding device starts to wind the lower diaphragm. At this time, the electrode piece is spit out forward under the drive of the upper and lower diaphragms and enters the receiving plate. The electrode piece coming out from the discharge end of the receiving plate is cut into smaller fragments by the cutting device, and then the fragments enter the recycling box for recycling of the electrode piece.

[0096] The battery disassembly system provided in the embodiment of the second aspect of the present application includes the above-mentioned electrode recovery mechanism.

[0097] The battery disassembly system provided by the present application has a simple and compact structure, is easy to use, and is more convenient to operate. In addition, the diaphragm and the pole piece can be separated effectively and quickly.

[0098] like Fig.11 As shown, the electrode recovery method provided by the embodiment of the third aspect of the present application comprises the following steps:

[0099] Step S10, fixing the diaphragm and the electrode.

[0100] Step S20, the pulling assembly clamps one end of the diaphragm and the electrode piece and passes through between the upper pressing plate and the lower pressing plate, between the upper rolling device and the lower rolling device, and between the upper suction plate and the lower suction plate in sequence, and moves to the first preset position.

[0101] Step S30, the upper suction plate and the lower suction plate of the adsorption assembly approach the diaphragm and the electrode piece respectively until they are pressed against the diaphragm and the electrode piece, the suction plate adsorbs the upper diaphragm, and the lower suction plate adsorbs the lower diaphragm, so as to separate the diaphragm and the electrode piece from the pulling assembly.

[0102] In step S40, the upper suction plate and the lower suction plate move away from the diaphragm and the pole piece respectively, the upper suction plate transports the upper diaphragm to the upper winding device, and the lower suction plate transports the lower diaphragm to the lower winding device.

[0103] Step S50, fixing the upper diaphragm on the upper rolling device and the lower diaphragm on the lower rolling device, and separating the upper suction plate from the upper diaphragm and the lower suction plate from the lower diaphragm.

[0104] In step S60 , the upper pressing plate and the lower pressing plate are respectively moved closer to the diaphragm and the electrode piece until they are pressed against the diaphragm and the electrode piece.

[0105] Step S70, the upper winding device winds up the upper diaphragm, the lower winding device winds up the lower diaphragm, and the receiving plate approaches the upper pressing plate and the lower pressing plate and moves to set a second preset position.

[0106] Step S80: After the upper diaphragm is completely rolled onto the upper rolling device, the upper diaphragm is removed from the upper rolling device and recovered; after the lower diaphragm is completely rolled onto the lower rolling device, the lower diaphragm is removed from the lower rolling device and recovered.

[0107] The electrode recovery method of the present application is simple to operate, easy to use, more convenient to operate, shortens the operation time, helps to reduce the operating intensity of workers, and can effectively and quickly separate the diaphragm from the electrode.

[0108] In one embodiment of the present application, the diaphragm and the pole piece are separated from the pulling assembly, specifically comprising the following steps:

[0109] The moving component drives the cutter to cut off the diaphragm and the pole piece between the pulling component and the adsorption component.

[0110] Since there is only a diaphragm at the front end of the diaphragm and the electrode, when the upper suction plate adsorbs the upper diaphragm and the lower suction plate adsorbs the lower diaphragm, the moving component drives the cutter to cut off the diaphragm at the front end, and then the upper suction plate and the lower suction plate move respectively to separate the diaphragm from the electrode, thereby exposing the electrode to complete the separation of the diaphragm and the electrode. The above steps avoid the diaphragm at the front end of the diaphragm and the electrode being too long, resulting in the front end of the diaphragm being difficult to separate when separating the diaphragm and the electrode, thereby ensuring that the diaphragm and the electrode can be quickly separated, easy to use, and more convenient to operate.

[0111] In one embodiment of the present application, the upper suction plate transports the upper diaphragm to the upper roll-up device, specifically comprising the following steps:

[0112] The upper moving member drives the upper winding needle to enter the upper gap between the upper suction plate and the upper pressing plate through the upper rotating member, and the upper winding needle is inserted on the upper diaphragm.

[0113] After the upper suction plate moves into place with the upper diaphragm, the upper moving part drives the upper rotating part to enter the upper gap between the upper suction plate and the upper pressure plate, and the upper winding needle is inserted on the upper diaphragm, and then the upper rotating part drives the upper winding needle to rotate to wind the upper diaphragm on the upper rotating part. When the upper diaphragm is completely wound on the upper winding needle, the upper moving part drives the upper rotating part to withdraw from the upper gap between the upper suction plate and the upper pressure plate to avoid the upper winding needle and the upper suction plate from being caught in the process of the upper suction plate pulling the upper diaphragm next time.

[0114] The lower suction plate transports the lower diaphragm to the lower winding device, which specifically includes the following steps:

[0115] The lower moving member drives the lower rolling needle to enter the lower gap between the lower suction plate and the lower pressure plate through the lower rotating member, and the lower rolling needle is inserted on the lower diaphragm.

[0116] After the suction plate moves into place with the lower diaphragm, the lower moving part drives the lower rotating part to enter the lower gap between the lower suction plate and the lower pressure plate, and makes the lower winding needle inserted on the lower diaphragm, and then the lower rotating part drives the lower winding needle to rotate to wind the lower diaphragm on the lower winding needle. When the lower diaphragm is completely wound on the lower winding needle, the lower moving part drives the upper rotating part to withdraw from the lower gap between the lower suction plate and the lower pressure plate to avoid the lower winding needle and the lower suction plate from happening during the next pulling of the lower diaphragm by the lower suction plate.

[0117] In one embodiment of the present application, after the upper diaphragm is completely rolled onto the upper rolling device, the upper diaphragm is removed from the upper rolling device and recovered, which specifically includes the following steps:

[0118] The upper moving member drives the upper winding needle to withdraw from the upper gap between the upper suction plate and the upper pressing plate through the upper rotating member, and the upper material withdrawing member blocks the upper diaphragm wound on the upper winding needle to remove the upper diaphragm from the upper winding needle.

[0119] When the upper diaphragm is completely wound on the upper winding needle, the upper moving part drives the upper rotating part to withdraw from the upper gap between the upper suction plate and the upper pressure plate. Since the upper material stripping part is located on the moving path of the upper rotating part, the upper material stripping part interferes with the upper diaphragm on the upper winding needle, so that the upper diaphragm is separated from the upper winding needle. On the one hand, the automation of the product is improved and the recovery of the upper diaphragm is convenient. On the other hand, it is convenient for the upper winding needle to effectively wind the previous upper diaphragm.

[0120] After the lower diaphragm is completely rolled onto the lower rolling device, the lower diaphragm is taken off from the lower rolling device and recovered, which specifically includes the following steps:

[0121] The lower moving member drives the lower winding needle to withdraw from the lower gap between the lower suction plate and the lower pressure plate through the lower rotating member, and the lower material withdrawal member blocks the lower diaphragm wound on the lower winding needle to remove the lower diaphragm from the lower winding needle.

[0122] After the lower diaphragm is completely wound on the lower winding needle, the lower moving part drives the upper rotating part to withdraw from the lower gap between the lower suction plate and the lower pressure plate. Since the lower material removal part is located on the moving path of the lower rotating part, the lower material removal part interferes with the lower diaphragm on the lower winding needle, so that the lower diaphragm is detached from the lower winding needle. On the one hand, the automation of the product is improved and the recovery of the lower diaphragm is convenient. On the other hand, it is convenient for the lower winding needle to effectively wind the next lower diaphragm.

[0123] In one embodiment of the present application, before the pulling assembly clamps one end of the diaphragm and the electrode piece and sequentially passes between the upper pressing plate and the lower pressing plate, between the upper rolling device and the lower rolling device, and between the upper suction plate and the lower suction plate, the following steps are also included:

[0124] The diaphragm and the pole piece are passed through a fourth channel formed by a plurality of separation rollers.

[0125] After the diaphragm with the pole piece passes through the fourth channel of the separation component, it is rolled at different angles and arcs by multiple separation rollers to invalidate the adhesion between the diaphragm and the pole piece, so that the diaphragm and the pole piece are separated, making it easier to separate the diaphragm and the pole piece, thereby ensuring the separation efficiency of the pole piece and the diaphragm and improving the working efficiency of the product.

[0126] In one embodiment of the present application, before the pulling assembly clamps one end of the diaphragm and the electrode piece and sequentially passes between the upper pressing plate and the lower pressing plate, between the upper rolling device and the lower rolling device, and between the upper suction plate and the lower suction plate, the following steps are also included:

[0127] The pulling assembly clamps one end of the diaphragm and the pole piece and passes through the heating device.

[0128] The heating component can heat the diaphragm and the electrode to melt the glue between the diaphragm and the electrode, thereby reducing the bonding strength between the diaphragm and the electrode, making the diaphragm and the electrode easier to separate, thereby ensuring the separation efficiency of the electrode and the diaphragm and improving the work efficiency of the product.

[0129] In the description of this application, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the working state of this application, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. The terms "first", "second", "third", and "fourth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0130] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. The term "plurality" refers to two or more, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0131] The present application has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various replacements and improvements may be made to the present application, all of which fall within the scope of protection of the present application.

Claims

1. A pole piece recovery mechanism, characterized in that: Used to separate the diaphragm and the electrode, the electrode recovery mechanism includes a base and a fixing component, a winding component, an adsorption component, a material receiving component and a pulling component sequentially arranged on the base along the transmission direction of the diaphragm and the electrode; The fixing assembly includes an upper pressing plate and a lower pressing plate which are arranged opposite to each other, a first passage for the diaphragm and the electrode piece to pass through is formed between the upper pressing plate and the lower pressing plate, the upper pressing plate and the lower pressing plate can move relative to each other to change the distance between the upper pressing plate and the lower pressing plate, and the upper pressing plate and the lower pressing plate are configured to press against the diaphragm and the electrode piece; The winding assembly comprises an upper winding device and a lower winding device which are arranged opposite to each other, and a second passage for the diaphragm and the pole piece to pass through is formed between the upper winding device and the lower winding device; The adsorption assembly comprises an upper suction plate and a lower suction plate which are arranged opposite to each other, a third passage for the diaphragm and the electrode piece to pass through is formed between the upper suction plate and the lower suction plate, the upper suction plate and the lower suction plate can move on the base to change the distance between the upper suction plate and the lower suction plate, the upper suction plate is configured to adsorb the upper diaphragm and transport the upper diaphragm to the upper rolling device, and the lower suction plate is configured to adsorb the lower diaphragm and transport the lower diaphragm to the lower rolling device; The material receiving assembly comprises a material receiving plate, which is movably mounted on the base, and a feeding end of the material receiving plate corresponds to the first channel; The pulling assembly comprises a clamping part and a driving device, wherein the clamping part is movably mounted on the base, and the driving device drives the clamping part to move on the base, and the clamping part is configured to clamp the diaphragm and the pole piece to pass through the first channel, the second channel and the third channel in sequence; Wherein, the upper rolling device comprises: an upper moving member, and the upper moving member is arranged on the base; An upper rotating member, wherein the upper rotating member is disposed on the upper moving member, and the upper moving member can drive the upper rotating member to enter or exit the upper gap between the upper suction plate and the upper pressure plate; and An upper winding needle, wherein the upper winding needle is arranged on the upper rotating member, and the upper rotating member can drive the upper winding needle to rotate; The lower rolling device comprises: a lower moving member, and the lower moving member is arranged on the base; A lower rotating member, wherein the lower rotating member is disposed on the lower moving member, and the lower moving member can drive the lower rotating member to enter or exit the lower gap between the lower suction plate and the lower pressure plate; and A lower winding needle is arranged on the lower rotating member, and the lower rotating member can drive the lower winding needle to rotate.

2. The electrode recovery mechanism according to claim 1, characterized in that: A cutting component is provided between the adsorption component and the pulling component; The cutting assembly includes a moving assembly and a cutter. The moving assembly is arranged on the base. The cutter is arranged on the moving assembly. The cutter is configured to cut off the diaphragm and the pole piece dragged by the pulling assembly.

3. The electrode recovery mechanism according to claim 1, characterized in that: The receiving assembly further includes: a cutting device, which is fixed on the base and disposed adjacent to the discharge end of the receiving plate, and is configured to cut the pole pieces; and A recycling box is arranged on the base and corresponds to the cutting device.

4. The electrode recovery mechanism according to claim 1, characterized in that: The upper pressing plate includes a first moving member and a first plate body, the first plate body is arranged on the first moving member, the first moving member is movably arranged on the base, and the first moving member can move along the transmission direction so that the first plate body is located below the upper rolling device or the first plate body is located between the upper rolling device and the upper suction plate; The lower pressure plate includes a second movable member and a second plate body, the second plate body is arranged on the second movable member, the second movable member is movably arranged on the base, and the second movable member can move along the transmission direction so that the second plate body is located above the lower rolling device or the second plate body is located between the lower rolling device and the lower suction plate.

5. The electrode recovery mechanism according to any one of claims 1 to 4, characterized in that: The pole piece recovery mechanism further comprises a separation assembly, which is located at a side of the fixing assembly away from the winding assembly in the transmission direction; The separation assembly includes a plurality of separation rollers arranged in sequence along the transmission direction, each of the separation rollers is arranged on the base and can rotate relative to the base, a gap is provided between two adjacent separation rollers, and a plurality of the gaps are connected to form a fourth channel through which the diaphragm and the pole piece pass.

6. The electrode recovery mechanism according to any one of claims 1 to 4, characterized in that: The electrode piece recovery mechanism also includes a heating component. In the transmission direction, the heating component is located on a side of the fixing component away from the winding component. The heating component is configured to heat the diaphragm and the electrode piece.

7. The electrode recovery mechanism according to any one of claims 1 to 4, characterized in that: A plurality of upper pressing rollers are arranged on the plate surface of the upper pressing plate in contact with the diaphragm, and the plurality of upper pressing rollers are capable of rotating relative to the upper pressing plate; and / or A plurality of lower pressing rollers are arranged on the plate surface of the lower pressing plate in contact with the diaphragm, and the plurality of lower pressing rollers can rotate relative to the lower pressing plate.

8. The electrode recovery mechanism according to any one of claims 1 to 4, characterized in that: An upper elastic pad is provided on the plate surface of the upper pressing plate in contact with the diaphragm; and / or A lower elastic pad is arranged on the plate surface of the lower pressure plate that contacts the diaphragm.

9. The electrode recovery mechanism according to any one of claims 1 to 4, characterized in that: A scraper is provided at the inlet end of the receiving plate, and the scraper is configured to guide the electrode piece to separate from the diaphragm.

10. The electrode recovery mechanism according to claim 1, characterized in that: The upper winding device further comprises: an upper stripping member, the upper stripping member being arranged on the base and being located on the moving path of the upper rotating member, the upper stripping member being configured to remove the upper diaphragm on the upper winding needle from the upper diaphragm; The lower rolling device further comprises: a lower stripping piece, which is arranged on the base and located on the moving path of the lower rotating piece, and is configured to remove the lower diaphragm on the lower rolling needle.

11. A battery disassembly system, characterized in that: It comprises a pole piece recovery mechanism as claimed in any one of claims 1 to 10.

12. A method for recycling pole pieces, characterized in that: The pole piece recycling method comprises the following steps: Fix the diaphragm and the pole piece; The pulling assembly clamps one end of the diaphragm and the electrode piece and passes through between the upper pressing plate and the lower pressing plate, between the upper rolling device and the lower rolling device, and between the upper suction plate and the lower suction plate in sequence, and moves to the first preset position; The upper suction plate and the lower suction plate of the adsorption assembly are respectively close to the diaphragm and the electrode piece until they are pressed against the diaphragm and the electrode piece, the suction plate adsorbs the upper diaphragm, and the lower suction plate adsorbs the lower diaphragm, so that the diaphragm and the electrode piece are separated from the pulling assembly; The upper suction plate and the lower suction plate move away from the diaphragm and the pole piece respectively, the upper suction plate transports the upper diaphragm to the upper winding device, and the lower suction plate transports the lower diaphragm to the lower winding device; Fixing the upper diaphragm on the upper winding device and the lower diaphragm on the lower winding device, and separating the upper suction plate from the upper diaphragm and the lower suction plate from the lower diaphragm; The upper pressing plate and the lower pressing plate are respectively moved toward the diaphragm and the pole piece until they are pressed against the diaphragm and the pole piece; The upper winding device winds up the upper diaphragm, the lower winding device winds up the lower diaphragm, and the receiving plate approaches the upper pressing plate and the lower pressing plate and moves to set a second preset position; After the upper diaphragm is completely rolled onto the upper rolling device, the upper diaphragm is removed from the upper rolling device and recovered; after the lower diaphragm is completely rolled onto the lower rolling device, the lower diaphragm is removed from the lower rolling device and recovered; The upper suction plate transports the upper diaphragm to the upper roll device, which specifically includes the following steps: The upper moving part drives the upper winding needle to enter the upper gap between the upper suction plate and the upper pressure plate through the upper rotating part, and the upper winding needle is inserted on the upper diaphragm; The lower suction plate transports the lower diaphragm to the lower winding device, which specifically includes the following steps: The lower moving member drives the lower rolling needle to enter the lower gap between the lower suction plate and the lower pressure plate through the lower rotating member, and the lower rolling needle is inserted on the lower diaphragm.

13. The pole piece recycling method according to claim 12, characterized in that: The separation of the diaphragm and the pole piece from the pulling assembly specifically includes the following steps: The moving component drives the cutter to cut off the diaphragm and the pole piece between the pulling component and the adsorption component.

14. The pole piece recycling method according to claim 13, characterized in that: After the upper diaphragm is completely rolled onto the upper rolling device, the upper diaphragm is taken off from the upper rolling device and recovered, which specifically includes the following steps: The upper moving part drives the upper winding needle to withdraw from the upper gap between the upper suction plate and the upper pressure plate through the upper rotating part, and the upper material withdrawal part blocks the upper diaphragm wound on the upper winding needle, and removes the upper diaphragm from the upper winding needle; After the lower diaphragm is completely rolled onto the lower rolling device, the lower diaphragm is taken off from the lower rolling device and recovered, which specifically includes the following steps: The lower moving member drives the lower winding needle to withdraw from the lower gap between the lower suction plate and the lower pressure plate through the lower rotating member, and the lower material withdrawal member blocks the lower diaphragm wound on the lower winding needle to remove the lower diaphragm from the lower winding needle.

15. The pole piece recycling method according to claim 12, characterized in that: Before the pulling assembly clamps one end of the diaphragm and the electrode piece and sequentially passes between the upper pressing plate and the lower pressing plate, between the upper rolling device and the lower rolling device, and between the upper suction plate and the lower suction plate, the following steps are also included: The diaphragm and the pole piece are passed through a fourth channel formed by a plurality of separation rollers.

16. The electrode recovery method according to claim 12, characterized in that: Before the pulling assembly clamps one end of the diaphragm and the electrode piece and sequentially passes between the upper pressing plate and the lower pressing plate, between the upper rolling device and the lower rolling device, and between the upper suction plate and the lower suction plate, the following steps are also included: The pulling assembly clamps one end of the diaphragm and the pole piece and passes through the heating device.

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