Low-carbon battery cell separator and electrode plate separation and recovery device

Abstract

A low-carbon battery cell separator and electrode plate separation and recovery device. A traction member pulls an electrode assembly to move in a first direction and through a cutting member, one of recovery mechanisms, one of tearing mechanisms, a further recovery mechanism, a further tearing mechanism and the remaining recovery mechanisms in sequence, so as to recover a first separator, a first electrode plate, a second electrode plate and a second separator in sequence, realizing the automatic recovery of separators and electrode plates of battery cells.

Description

A low-carbon battery cell diaphragm and electrode separation and recovery device Technical Field

[0001] This article relates to the field of battery cell recycling technology, and in particular to a low-carbon battery cell diaphragm electrode separation and recovery device. Background Art

[0002] With the rapid development of my country's new energy vehicle industry, lithium batteries, the primary power batteries used in vehicles, have a service life of 3-5 years. Used lithium batteries contain high-value metals and toxic and hazardous substances. Therefore, recycling and reusing used lithium batteries not only achieves resource recycling but also reduces environmental pollution.

[0003] In this regard, when recycling lithium batteries in the existing technology, one of the recycling methods is to crush the lithium battery cells before recycling. However, when the cells are completely crushed, the valuable components in the diaphragm and the electrode are mixed with each other, which is difficult to separate. It is necessary to use multiple equipment to separate them step by step. The recycling process is long, the equipment investment is large, and the energy consumption of multiple equipment when working is also large, which is not conducive to achieving low-carbon and environmental protection.

[0004] Another recycling method is to separate the diaphragm and the electrode of the battery cell and recycle the diaphragm and the electrode separately. The electrode assembly of the battery cell is mainly composed of a first diaphragm, a first electrode, a second diaphragm and a second electrode stacked together in sequence. Since the diaphragm and the electrode of the battery cell are soft in texture, the device for recycling the diaphragm and the electrode in the prior art mainly uses manual separation of the diaphragm and the electrode, so the efficiency of recycling the diaphragm and the electrode in the battery cell is low, and it is not conducive to automation.

[0005] Summary of the Invention

[0006] The purpose of this paper is to provide a low-carbon battery cell diaphragm and electrode separation and recovery device to realize the automated separation and recovery of the battery cell diaphragm and electrode, improve the recovery efficiency, and make the recovery work low-carbon and environmentally friendly.

[0007] In order to solve the above technical problems, this article provides the following technical solutions:

[0008] A low-carbon battery cell diaphragm and electrode piece separation and recovery device is used to separate and recover the first diaphragm, the first electrode piece, the second diaphragm and the second electrode piece of an electrode assembly, comprising a traction member, a cutting member, a tearing mechanism, and a recovery mechanism. The cutting member is used to disconnect the first diaphragm. Two tearing mechanisms are provided for correspondingly tearing the first electrode piece and the second electrode piece. Four recovery mechanisms are provided for correspondingly recovering the first diaphragm, the first electrode piece, the second diaphragm and the second electrode piece. Along the first direction, the cutting member, one of the recovery mechanisms, one of the tearing mechanisms, another of the recovery mechanisms, another of the tearing mechanisms and the remaining recovery mechanisms are arranged in sequence. The traction member is used to pull the electrode assembly to move along the first direction and pass through the cutting member, one of the recovery mechanisms, one of the tearing mechanisms, another of the recovery mechanisms, another of the tearing mechanisms and the remaining recovery mechanisms in sequence.

[0009] In one embodiment, the tearing mechanism includes a clamping assembly, a supporting member, a rotating tearing disk and a first driving member, the clamping assembly is used to clamp the electrode assembly, the rotating tearing disk and the supporting member are arranged opposite to each other, the traction member is used to drive the electrode assembly to pass between the rotating tearing disk and the supporting member, the distance between the rotating tearing disk and the supporting member is adjustable, and the first driving member is used to drive the rotating tearing disk to rotate.

[0010] In one embodiment, the rotating tearing disk includes a disk body and a frosted layer, and the frosted layer is provided on a side of the disk body facing the supporting member.

[0011] In one embodiment, the rotating tearing disk includes a disk body and a suction cup, and the suction cup is provided on a side of the disk body facing the supporting member.

[0012] In one embodiment, the recycling mechanism includes a scraper and a recycling box, wherein the scraper is inclined toward the electrode assembly, and the front end of the scraper is close to the electrode assembly, and the recycling box is adjacent to the rear end of the scraper to collect the electrode sheets and diaphragms scraped from the electrode assembly by the scraper.

[0013] In one embodiment, a front end of the scraper is provided with an arc portion on a side facing the electrode assembly, and a front end of the scraper extends in a direction opposite to the first direction to form a spike portion.

[0014] In one embodiment, the recovery mechanism includes a shell, a negative pressure device, a recovery roller and a second driving member. The shell is provided with a first opening and a second opening. The negative pressure device is connected to the first opening. The second opening faces and is close to the electrode assembly. The recovery roller is arranged in the shell and can rotate relative to the shell. The second driving member is used to drive the recovery roller to rotate.

[0015] In one embodiment, an outer surface of the recovery roller is provided with an adhesive layer.

[0016] In one embodiment, the second opening of the housing is trumpet-shaped.

[0017] In one embodiment, a tensioning assembly is further included, wherein the tensioning assembly includes two tensioning rollers arranged at intervals, and the traction member is used to drive the electrode assembly to pass around the two tensioning rollers in sequence, and then pass through the cutting member, one of the recovery mechanisms, one of the tearing mechanisms, another recovery mechanism, another tearing mechanism and the remaining recovery mechanisms in sequence along the first direction.

[0018] Compared with the prior art, the low-carbon battery cell diaphragm electrode separation and recovery device of the embodiment of this invention has the following advantages:

[0019] In the article, the traction member pulls the electrode assembly to move along the first direction and passes through the cutting member, one of the recycling mechanisms, one of the tearing mechanisms, another recycling mechanism, another tearing mechanism and the remaining recycling mechanisms in sequence. When the electrode assembly passes through the cutting member, the cutting member first cuts off the first diaphragm, and then when the electrode assembly passes through one of the recycling mechanisms, the recycling mechanism can recycle the first diaphragm and expose the first electrode piece. Then, when the electrode assembly passes through one of the tearing mechanisms, the tearing mechanism can tear the first electrode piece. Then, when the electrode assembly passes through another recycling mechanism, the recycling mechanism can recycle the first electrode piece. Furthermore, after the electrode assembly passes through another tearing mechanism, the tearing mechanism tears the second electrode piece. Finally, the second electrode piece and the second diaphragm are correspondingly recycled through the remaining two recycling mechanisms. Therefore, this article can automatically separate the first diaphragm, the first electrode piece, the second diaphragm and the second electrode piece and recycle them separately, realizing the automatic recycling of the diaphragms and electrode pieces of the battery cell, reducing manual participation, and improving recycling efficiency. In addition, compared with the recycling method of crushing battery cells, the battery cell recycling method in this article is more low-carbon and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of the overall structure of the embodiment of this invention;

[0021] FIG2 is a schematic structural diagram of a first embodiment of a rotating tearing disk in this document;

[0022] FIG3 is a schematic structural diagram of a second embodiment of the rotating tearing disk herein;

[0023] FIG4 is a schematic structural diagram of a third embodiment of the rotating tearing disk herein;

[0024] FIG5 is a schematic structural diagram of a fourth embodiment of the rotating tearing disk herein;

[0025] FIG6 is a schematic structural diagram of a fifth embodiment of the rotating tearing disk herein;

[0026] FIG7 is a schematic structural diagram of a first embodiment of the recycling mechanism herein;

[0027] Figure 8 is an enlarged view of point A in Figure 7;

[0028] FIG9 is a schematic structural diagram of a second embodiment of the recycling mechanism in this article.

[0029] In the figure, 100, electrode assembly; 110, first diaphragm; 120, first pole piece; 130, second diaphragm; 140, second pole piece; 1, traction member; 2, cutting member; 3, tearing mechanism; 31, clamping assembly; 311, first clamping block; 312, second clamping block; 32, supporting member; 33, rotating tearing disk; 331, disk body; 332, frosted layer; 333, suction cup; 4, recovery mechanism; 41, scraper; 411, arc surface portion; 412, spike portion; 42, recovery box; 43, shell; 431, first opening; 432, second opening; 44, negative pressure device; 45, recovery roller; 5, tensioning assembly; 51, tensioning roller. DETAILED DESCRIPTION

[0030] The following embodiments are further described in detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0031] As shown in FIG1 , this article relates to a low-carbon battery cell diaphragm electrode separation and recovery device for separating and recovering the first diaphragm 110, the first electrode 120, the second diaphragm 130, and the second electrode 140 of the electrode assembly 100, including a traction member 1, a cutting member 2, a tearing mechanism 3, and a recovery mechanism 4. The cutting member 2 is used to disconnect the first diaphragm 110. The tearing mechanism 3 is provided with two for correspondingly tearing the first electrode 120 and the second electrode 140. The recovery mechanism 4 is provided with four for correspondingly recovering the first diaphragm 110. , a first electrode piece 120, a second diaphragm 130 and a second electrode piece 140; along the first direction, the cutting piece 2, one of the recovery mechanisms 4, one of the tearing mechanisms 3, another recovery mechanism 4, another tearing mechanism 3 and the remaining recovery mechanisms 4 are arranged in sequence, and the traction piece 1 is used to pull the electrode assembly 100 to move along the first direction and pass through the cutting piece 2, one of the recovery mechanisms 4, one of the tearing mechanisms 3, another recovery mechanism 4, another tearing mechanism 3 and the remaining recovery mechanisms 4 in sequence.

[0032] In the present invention, the traction member 1 pulls the electrode assembly 100 to move in the first direction and passes through the cutting member 2, one of the recovery mechanisms 4, one of the tearing mechanisms 3, another recovery mechanism 4, another tearing mechanism 3 and the remaining recovery mechanisms 4 in sequence. When the electrode assembly 100 passes through the cutting member 2, the cutting member 2 first cuts off the first diaphragm 110, and then the traction member 1 pulls the uncut first electrode piece 120, the second diaphragm 130 and the second electrode piece 140 to move in the first direction. When the electrode assembly 100 passes through one of the recovery mechanisms 4, the recovery mechanism 4 can recycle the first diaphragm 110 and expose the first electrode piece 120. When the electrode assembly 100 continues to move and passes through one of the tearing mechanisms 3, the tearing mechanism 3 The first electrode sheet 120 is torn apart. At this time, the traction member 1 pulls the unbroken second diaphragm 130 and the second electrode sheet 140 in the first direction. When the electrode assembly 100 continues to move and passes through another recycling mechanism 4, the recycling mechanism 4 recycles the first electrode sheet 120. Furthermore, after the electrode assembly 100 continues to move through the other tearing mechanism 3, the tearing mechanism 3 tears the second electrode sheet 140. Finally, the second electrode sheet 140 and the second diaphragm 130 are correspondingly recycled through the remaining two recycling mechanisms 4. Therefore, the present invention can automatically separate the first diaphragm 110, the first electrode sheet 120, the second diaphragm 130 and the second electrode sheet 140 and recycle them separately, realizing the automated recycling of the diaphragms and electrode sheets of the battery cell, reducing manual participation and improving recycling efficiency. In addition, compared with the recycling method of crushing the battery cell, the battery cell recycling method of the present invention is more low-carbon and environmentally friendly.

[0033] The tearing mechanism 3 includes a clamping assembly 31, a supporting member 32, a rotating tearing disk 33 and a first driving member. The clamping assembly 31 is used to clamp the electrode assembly 100. The rotating tearing disk 33 and the supporting member 32 are arranged opposite to each other. The traction member 1 is used to drive the electrode assembly 100 to pass between the rotating tearing disk 33 and the supporting member 32. The distance between the rotating tearing disk 33 and the supporting member 32 is adjustable. The first driving member is used to drive the rotating tearing disk 33 to rotate.

[0034] Specifically, when the traction member 1 passes through the tearing mechanism 3, the clamping assembly 31 is first used to clamp the electrode assembly 100. At this time, the tearing mechanism 3 is located between the clamping assembly 31 and the traction member 1, so that when the rotating tearing disk 33 tears the pole piece, the electrode assembly 100 will not be offset, ensuring stable tearing of the pole piece. The specific principle of the rotating tearing disk 33 tearing the pole piece is to first drive the rotating tearing disk 33 and the supporting member 32 to approach each other so as to clamp the electrode assembly 100 through the two, and then the first driving member drives the rotating tearing disk 33 to rotate 90°-180° to tear the pole piece to pieces.

[0035] The rotating tearing disk 33 and the supporting member 32 are both made of a material with relatively high hardness, thereby increasing the positive pressure when the rotating tearing disk 33 and the supporting member 32 clamp the electrode assembly 100, increasing the friction between the rotating tearing disk 33 and the electrode assembly 100, and improving the efficiency and success rate of the rotating tearing disk 33 in tearing the electrode sheet.

[0036] The clamping assembly 31 includes a first clamping block 311, a second clamping block 312 and a clamping drive. The first clamping block 311 and the second clamping block 312 are opposite to each other. The clamping drive drives the first clamping block 311 and the second clamping block 312 to move closer to or away from each other, so that they can be used to clamp the electrode assembly 100. The clamping drive can be a clamping cylinder. The first clamping block 311 and the second clamping block 312 are fixedly connected to the two output ends of the clamping cylinder, so as to facilitate the adjustment of the distance between the first clamping block 311 and the second clamping block 312.

[0037] As shown in Figures 2 and 3, in one embodiment, the rotating tearing disk 33 includes a disk body 331 and a frosted layer 332. The frosted layer 332 is provided on the side of the disk body 331 facing the supporting member 32, thereby increasing the friction with the pole piece and improving the efficiency and success rate of tearing the pole piece.

[0038] Specifically, in one embodiment, the frosted layer 332 is a whole frosted block, which completely covers the side of the disk body 331 facing the supporting member 32, thereby increasing the contact area between the electrode and the frosted layer 332; in another embodiment, the frosted layer 332 includes multiple frosted blocks, which are arranged in a circular array on the side of the disk body 331 facing the supporting member 32, thereby reducing the contact area between the frosted layer 332 and the electrode, and at the same time increasing the pressure per unit area between the frosted layer 332 and the electrode, which is more conducive to tearing the electrode.

[0039] 4 to 6 , in another embodiment, the rotating tearing disk 33 includes a disk body 331 and a suction cup 333. The suction cup 333 is provided on a side of the disk body 331 facing the supporting member 32, so that the suction cup 333 can suck the outer surface of the pole piece and then tear the pole piece apart when the suction cup 333 rotates.

[0040] Specifically, in one embodiment, the suction cup 333 is provided with one, and the outer periphery of the suction cup 333 extends to the outer periphery of the disc body 331, thereby generating a greater suction force to improve the efficiency of tearing the pole piece. It is further explained that the diameter of the suction cup 333 is less than or equal to the width of the pole piece to ensure that the suction cup 333 will not leak and can stably suck the pole piece. At the same time, in this embodiment, the suction cup 333 can be a concave suction cup 333 or a convex suction cup 333; in another embodiment, the suction cup 333 is provided with multiple, and the multiple suction cups 333 are arranged in a circular array on the side of the disc body 331 facing the supporting member 32 to reduce the contact area between the suction cup 333 and the pole piece, increase the pressure per unit area between the suction cup 333 and the pole piece, and facilitate tearing the pole piece. At the same time, in this embodiment, the suction cup 333 can also be a concave suction cup 333 or a convex suction cup 333.

[0041] As shown in Figures 7 and 8, in one embodiment, the recycling mechanism 4 includes a scraper 41 and a recycling box 42, the scraper 41 is inclined toward the electrode assembly 100, and the front end of the scraper 41 is close to the electrode assembly 100, and the recycling box 42 is adjacent to the rear end of the scraper 41 to collect the electrode sheets and diaphragms scraped from the electrode assembly 100 by the scraper 41.

[0042] By setting the scraper 41 and the recycling box 42, and the scraper 41 being close to the electrode assembly 100, when the traction member 1 drives the electrode assembly 100 through the recycling mechanism 4, the scraper 41 will pick up the broken electrode sheets and diaphragms, and allow the electrode sheets and diaphragms to move along the scraper 41 from the front end to the rear end, and fall into the recycling box 42, thereby realizing automatic separation and collection of the electrode sheets and diaphragms.

[0043] Optionally, a curved surface portion 411 is provided at the front end of the scraper 41 on a side facing the electrode assembly 100, thereby preventing the scraper 41 from scratching the electrode assembly 100 and preventing interference with the movement of the electrode assembly 100 in the first direction. A spike portion 412 is formed at the front end of the scraper 41, extending in a direction opposite to the first direction. Thus, when the electrode assembly 100 moves in the first direction, the ends of the severed electrode sheets and diaphragms on the electrode assembly 100 can be lifted by the spike portion 412, thereby achieving separation of the electrode sheets and diaphragms on the electrode assembly 100.

[0044] As shown in Figure 9, in another embodiment, the recovery mechanism 4 includes a shell 43, a negative pressure device 44, a recovery roller 45 and a second driving member. The shell 43 is provided with a first opening 431 and a second opening 432. The negative pressure device 44 is connected to the first opening 431. The second opening 432 faces and is close to the electrode assembly 100. The recovery roller 45 is arranged in the shell 43 and can rotate relative to the shell 43. The second driving member is used to drive the recovery roller 45 to rotate.

[0045] When the recovery mechanism 4 is in operation, the negative pressure device 44 works to form a negative pressure in the shell 43, thereby forming a suction force at the second opening 432. Since the second opening 432 of the shell 43 is close to the electrode assembly 100, the pole pieces and diaphragms disconnected from the electrode assembly 100 can be sucked into the shell 43 when passing through the recovery mechanism 4. At the same time, since the second driving member drives the recovery roller 45 to rotate, the pole pieces and diaphragms entering the shell 43 can be wound on the recovery roller 45. On the one hand, it is convenient to recover the pole pieces and diaphragms, and on the other hand, it prevents the pole pieces and diaphragms from being sucked to the negative pressure device 44, affecting the normal operation of the negative pressure device 44.

[0046] Optionally, the outer surface of the recovery roller 45 is coated with an adhesive to form an adhesive layer on the outer surface of the recovery roller 45, so that the ends of the pole piece and the diaphragm entering the shell 43 can be adhered to the winding roller, allowing the winding roller to better and more easily wind the pole piece and the diaphragm thereon.

[0047] Furthermore, the second opening 432 of the shell 43 is trumpet-shaped, which is conducive to the pole piece and the diaphragm being sucked into the shell more smoothly, thereby improving the recovery efficiency of the pole piece or the diaphragm.

[0048] As shown in Figure 1, in this embodiment, the cutting member 2 is a laser cutter. When the electrode assembly 100 passes through the laser cutter, the temperature of the laser cutter is set to cut off the first diaphragm 110 of the outermost layer of the electrode assembly 100. Compared with cutting with a knife, a saw blade or a grinding wheel, cutting with a laser cutter will not cause damage to the electrode sheet of the next layer, thereby ensuring that the traction member 1 continues to smoothly pull the electrode assembly 100 to move along the first direction.

[0049] In this embodiment, the traction member 1 is specifically a traction clamp, which can clamp the free end of the electrode assembly 100, and then allow the electrode assembly 100 to unfold and move stably along the first direction to separate and recover the diaphragm and electrode sheets on the electrode assembly 100 in turn.

[0050] In this embodiment, the low-carbon battery cell diaphragm electrode separation and recovery device also includes a tensioning assembly 5, which includes two tensioning rollers 51 arranged at intervals. The traction member 1 is used to drive the electrode assembly 100 to pass around the two tensioning rollers 51 in sequence, and then pass through the cutting member 2, one of the recovery mechanisms 4, one of the tearing mechanisms 3, another recovery mechanism 4, another tearing mechanism 3 and the remaining recovery mechanisms 4 in sequence along the first direction.

[0051] By setting the tensioning assembly 5, the electrode assembly 100 can be in a straightened state in the first direction after the traction member 1 drives the electrode assembly 100 to pass around the two tensioning rollers 51, thereby ensuring smoother separation and recovery of the electrode sheets and diaphragms.

[0052] The specific working process of a low-carbon battery cell diaphragm electrode separation and recovery device in this paper is as follows:

[0053] The traction clamp first clamps the free end of the electrode assembly 100 to unfold the electrode sheet and the diaphragm of the electrode assembly 100, and then the traction clamp drives the electrode assembly 100 to pass through the two tensioning rollers 51 and move along the first direction to make the electrode assembly 100 in a straight state in the first direction. When the electrode assembly 100 passes through the laser cutter, the laser cutter cuts the first diaphragm 110, and then the electrode assembly 100 moves to a recycling mechanism 4 to recycle the cut first diaphragm 110. Then the electrode assembly 100 moves to a tearing mechanism 3, and the rotating tearing disk 33 and the supporting member 32 press The electrode assembly 100 is tightened, and the rotating tearing disk 33 is rotated to tear the first electrode piece 120. Then, when the electrode assembly 100 continues to move to another recycling mechanism 4, the recycling mechanism 4 recycles the first electrode piece 120. Furthermore, the electrode assembly 100 continues to move to another tearing mechanism 3, and the second electrode piece 140 is also torn apart under the action of the rotating tearing disk 33. Finally, the traction clamp releases the remaining second diaphragm 130, allowing the second electrode piece 140 and the second diaphragm 130 to be correspondingly recycled by the remaining two recycling mechanisms 4, completing the separation and recycling of the battery cell diaphragm and the electrode piece.

[0054] In summary, compared with the existing technology, the low-carbon battery cell diaphragm pole piece separation and recovery device in this article can automatically realize the separation and recovery of pole pieces and diaphragms, without the need for subsequent separation of pole pieces and diaphragms, thereby improving the efficiency of battery cell recycling. At the same time, this article adopts a relatively simple structure, so it can reduce the cost of equipment and has high practicality.

[0055] The above is only an optional implementation method of this article. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of this article. These improvements and replacements should also be regarded as the scope of protection of this article.

Claims

1. A low-carbon battery cell diaphragm and pole piece separation and recovery device, used for separating and recovering a first diaphragm (110), a first pole piece (120), a second diaphragm (130) and a second pole piece (140) of an electrode assembly (100), characterized in that: The invention comprises a traction member (1), a cutting member (2), a tearing mechanism (3), and a recovery mechanism (4); the cutting member (2) is used to disconnect the first diaphragm (110); two tearing mechanisms (3) are provided to tear the first pole piece (120) and the second pole piece (140) respectively; four recovery mechanisms (4) are provided to recover the first diaphragm (110), the first pole piece (120), the second diaphragm (130), and the second pole piece (140) respectively; along a first direction, the cutting member (2), one of the recovery mechanisms (4), one of the tearing mechanisms (3), another of the recovery mechanisms (4), another of the tearing mechanisms (3), and the remaining of the recovery mechanisms (4) are arranged in sequence at intervals; the traction member (1) is used to pull the electrode assembly (100) to move along the first direction and pass through the cutting member (2), one of the recovery mechanisms (4), one of the tearing mechanisms (3), another of the recovery mechanisms (4), another of the tearing mechanisms (3), and the remaining of the recovery mechanisms (4) in sequence.

2. The low-carbon battery cell diaphragm pole piece separation and recovery device according to claim 1 is characterized in that: The tearing mechanism (3) comprises a clamping assembly (31), a supporting member (32), a rotating tearing disk (33) and a first driving member, wherein the clamping assembly (31) is used to clamp the electrode assembly (100), the rotating tearing disk (33) and the supporting member (32) are arranged opposite to each other, the traction member (1) is used to drive the electrode assembly (100) to pass between the rotating tearing disk (33) and the supporting member (32), the distance between the rotating tearing disk (33) and the supporting member (32) is adjustable, and the first driving member is used to drive the rotating tearing disk (33) to rotate.

3. The low-carbon battery cell diaphragm pole piece separation and recovery device according to claim 2 is characterized in that: The rotating tearing disc (33) comprises a disc body (331) and a frosted layer (332), wherein the frosted layer (332) is arranged on a side of the disc body (331) facing the supporting member (32).

4. The low-carbon battery cell diaphragm pole piece separation and recovery device according to claim 2, characterized in that: The rotating tearing disc (33) comprises a disc body (331) and a suction cup (333), wherein the suction cup (333) is arranged on a side of the disc body (331) facing the supporting member (32).

5. The low-carbon battery cell diaphragm pole piece separation and recovery device according to claim 1, characterized in that: The recycling mechanism (4) comprises a scraper (41) and a recycling box (42); the scraper (41) is inclined toward the electrode assembly (100), and the front end of the scraper (41) is close to the electrode assembly (100); the recycling box (42) is adjacent to the rear end of the scraper (41) to collect the electrode sheets and diaphragms scraped from the electrode assembly (100) by the scraper (41).

6. The low-carbon battery cell diaphragm pole piece separation and recovery device according to claim 5, characterized in that: A front end of the scraper (41) is provided with an arc surface portion (411) on a side facing the electrode assembly (100), and a front end of the scraper (41) extends in a direction opposite to the first direction to form a spike portion (412).

7. The low-carbon battery cell diaphragm pole piece separation and recovery device according to claim 1, characterized in that: The recovery mechanism (4) comprises a shell (43), a negative pressure device (44), a recovery roller (45) and a second driving member. The shell (43) is provided with a first opening (431) and a second opening (432). The negative pressure device (44) is connected to the first opening (431). The second opening (432) faces and is close to the electrode assembly (100). The recovery roller (45) is arranged in the shell (43) and can rotate relative to the shell (43). The second driving member is used to drive the recovery roller (45) to rotate.

8. The low-carbon battery cell diaphragm pole piece separation and recovery device according to claim 7 is characterized in that: The outer surface of the recovery roller (45) is provided with an adhesive layer.

9. The low-carbon battery cell diaphragm pole piece separation and recovery device according to claim 7, characterized in that: The second opening (432) of the shell (43) is in a trumpet shape.

10. The low-carbon battery cell diaphragm pole piece separation and recovery device according to claim 1, characterized in that: The invention also comprises a tensioning assembly (5), wherein the tensioning assembly (5) comprises two tensioning rollers (51) arranged at an interval, and the traction member (1) is used to drive the electrode assembly (100) to pass around the two tensioning rollers (51) in sequence, and then pass through the cutting member (2), one of the recovery mechanisms (4), one of the tearing mechanisms (3), another of the recovery mechanisms (4), another of the tearing mechanisms (3), and the remaining recovery mechanisms (4) in sequence along a first direction.

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