Automatic stripping device and method for retired power battery electrode plate

Abstract

The invention belongs to the technical field of battery electrode slice recovery, and particularly relates to an automatic stripping device for retired power battery electrode slices, which comprises a frame body, and an intermittent conveyor belt mechanism, a joint bonding table mechanism, a flattening and tensioning assembly, a first stripping assembly, a second stripping assembly and a diaphragm collecting assembly are arranged on the frame body; the joint bonding table mechanism comprises a movably-arranged working plate, the working plate is located in the middle of the upper portion of the intermittent conveying belt mechanism, the flattening and tensioning assembly comprises two sets of symmetrically-distributed flattening rollers, the overall structure of the second stripping assembly is the same as that of the first stripping assembly, the diaphragm collecting assembly comprises a detachable collecting roll, and the collecting roll is used for collecting diaphragms; meanwhile, the first stripping assembly is used for stripping a positive plate below the diaphragm, the second stripping assembly is used for stripping a negative plate on the diaphragm, and a pair of traction rollers are arranged at the tail end to pull the diaphragm forwards. The invention can efficiently strip the electrode plate, separately recover the positive electrode material and the negative electrode material, and realize the industrialized recovery of the retired battery.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery electrode sheet recycling, and particularly relates to an automatic stripping device and method for retired power battery electrode sheets. Background Art

[0002] In the aspect of new energy technology, power batteries are key components in fields such as new energy vehicles. Effectively stripping electrode sheets from retired battery packs is the key to improving the industrial recycling efficiency of retired batteries. In the field of resource recycling and utilization technology, through the disassembly and cascaded utilization of retired power batteries, effective resource recovery and reuse can be achieved, reducing environmental pollution and meeting the requirements of sustainable development.

[0003] The soft package of a high-power power battery pack is composed of several positive and negative electrode sheets pasted on both sides of a long and thin separator, folded in half, and then folded or wound. The sizes and quantities of electrode sheets of different specifications and types, as well as the sizes and lengths of the separators, are different. Automatically stripping and separating the positive and negative electrode sheets from the separator is an important link in disassembling retired batteries.

[0004] Currently, in the industrial recycling process of retired batteries, the positive and negative electrode sheets are stripped from the separator manually, which has low efficiency, high cost, and a large working area. Therefore, the present invention proposes an automatic stripping device and method for retired power battery electrode sheets. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic stripping device and method for retired power battery electrode sheets, which can efficiently strip electrode sheets, recover two types of electrode materials, namely positive and negative electrodes, and achieve the industrial recycling of retired batteries.

[0006] The technical solutions adopted by the present invention are specifically as follows:

[0007] An automatic stripping device for retired power battery electrode sheets includes a frame body, on which an intermittent conveyor belt mechanism, a joint bonding table mechanism, a flattening and tensioning assembly, a first stripping assembly, a second stripping assembly, and a separator collection assembly are provided;

[0008] The joint bonding table mechanism includes a movable working plate, which is located in the middle above the intermittent conveyor belt mechanism. The flattening and tensioning assembly includes two groups of symmetrically distributed flattening rollers. Each group of flattening rollers has four. The two groups of flattening rollers are inclined. The two groups of flattening rollers are located above the side of the intermittent conveyor belt mechanism. The first peeling assembly is located on one side of the two groups of flattening rollers. The second peeling assembly is located directly above the first peeling assembly. The overall structure of the second peeling assembly is basically the same as that of the first peeling assembly. There is a pair of traction rollers at its end to pull the diaphragm forward. The diaphragm collecting assembly includes a detachable collecting roll for collecting the diaphragm. At the same time, the first peeling assembly is used to peel the positive electrode sheet under the diaphragm, and the second peeling assembly is used to peel the negative electrode sheet on the diaphragm.

[0009] Preferably, the joint bonding table mechanism further includes a sliding frame provided on the frame body. The working plate slides horizontally on the sliding frame. An electric telescopic rod is provided on the sliding frame, and the output end of the electric telescopic rod is connected to the side of the working plate.

[0010] Preferably, the flattening roller includes a mounting frame provided on the frame body. The mounting frame is symmetrically provided with first tubes. The first tubes are movably provided with telescopic columns. Springs are sleeved on the telescopic columns. The springs and the lower ends of the telescopic columns are jointly connected with inclined rods. The two groups of inclined rods are symmetrically distributed. The two ends of the flattening roller are installed on the inclined rods through bearings. Each group of four flattening rollers is arranged in an equidistant array.

[0011] Preferably, the first peeling assembly includes a first mounting strip provided on the frame body. Two first smoothing rollers are provided on one side of the first mounting strip. A first corner roller is provided at the other end of the first mounting strip. A first flattening platform is provided in the middle of the first mounting strip. First height adjusting tubes are provided on both sides of the first mounting strip. The lower side of the first height adjusting tube is hinged with a first connecting rod. A first blade is installed on the first connecting rod. The first blade is inclined.

[0012] Preferably, the second peeling assembly includes a second mounting strip provided on the frame body. Two second smoothing rollers are provided on one side of the second mounting strip. A second corner roller and a rubber roller are provided at the other end of the second mounting strip. A second flattening platform is provided in the middle of the second mounting strip. Second height adjusting tubes are provided on both sides of the second mounting strip. The lower side of the second height adjusting tube is hinged with a second connecting rod. A second blade is installed on the second connecting rod. The second blade is inclined.

[0013] Preferably, a first concave conveyor belt and a second concave conveyor belt are provided on the frame body. The first concave conveyor belt is located below the first blade, and the second concave conveyor belt is located below the second blade. One end of the second mounting strip is provided with a first driving motor, and the output end of the first driving motor is connected to the second turning roller.

[0014] Preferably, the diaphragm collecting assembly includes a second driving motor provided on the frame body. The rotating shafts at both ends of the collecting roll are placed on the frame body through bearings, and the output end of the second driving motor is connected to the rotating shaft at one end of the collecting roll.

[0015] A method for using an automatic stripping device for electrodes of retired power batteries includes the following steps:

[0016] Step 1: Initially, reserve a certain length of diaphragm or a thin rope with a certain strength on the collecting roll, so that the diaphragm or the thin rope can sequentially pass through: the second stripping assembly, the first stripping assembly, the flattening and tensioning assembly to the joint bonding table mechanism;

[0017] Step 2: Place the battery electrode group soft package on the intermittent conveyor belt mechanism. When the working plate extends above the intermittent conveyor belt mechanism, splice the reserved diaphragm on the working plate with the diaphragm of the battery electrode group soft package to be stripped.

[0018] Step 3: Start the first driving motor. The output end of the first driving motor drives the second turning roller to rotate. Cooperating with the rubber roller, the friction between the second turning roller and the rubber roller and the diaphragm realizes driving the diaphragm to stretch forward. The speed can be adjusted. At the same time, the second driving motor drives the collecting roll to rotate to collect the diaphragm.

[0019] Step 4: Under the action of the spring squeezing towards the middle, the two flattening rollers flatten the battery electrode group soft package. When the flattened and tensioned battery electrode group soft package is pulled by the diaphragm to the first blade, the inclined first blade cooperates with the first flattening platform to strip the positive electrode sheet under the diaphragm; the first concave conveyor belt collects the positive electrode sheet;

[0020] Step 5: Under the continuous pulling of the diaphragm, when the flattened and tensioned diaphragm and the negative electrode sheet pass through the second blade, the inclined second blade cooperates with the second flattening platform to strip the negative electrode sheet on the diaphragm; the second concave conveyor belt collects the negative electrode sheet;

[0021] Step 6: The collecting roll winds and collects the diaphragm, and splices the diaphragm at the root of the battery electrode group soft package with the diaphragm at the end of the next battery electrode group soft package to complete the continuous automatic stripping and separation of the positive electrode sheet and the negative electrode sheet of the battery electrode group soft package.

[0022] The technical effects achieved by the present invention are:

[0023] The technology of the present invention is mature and the mechanism is simple. It has a modular structure and programmed control. The total installed capacity is about 3 kW and the floor area is about 2 m 2 , and it is convenient for installation and debugging; it is easy to operate, only one person is required to operate, and the operation is simple.

[0024] In the present invention, by setting a first flattening platform, the upper surface of the flattened battery electrode group soft package is attached to the first flattening platform, so as to ensure that the first blade peels off the positive electrode sheet under the diaphragm smoothly. At the same time, the height and inclination angle of the first blade can be finely adjusted, so as to ensure the peeling effect and achieve precise peeling of the positive electrode sheet under the diaphragm.

[0025] In the present invention, by setting a second flattening platform, the upper surface of the battery electrode group soft package after peeling off the positive electrode sheet is attached to the second flattening platform, so as to ensure that the second blade peels off the negative electrode sheet on the diaphragm smoothly. At the same time, the height and inclination angle of the second blade can be finely adjusted, so as to ensure the peeling effect and achieve precise peeling of the negative electrode sheet on the diaphragm. Description of the Drawings

[0026] Figure 1 is the overall structural schematic diagram of an automatic peeling device for electrode sheets of retired power batteries according to the present invention;

[0027] Figure 2 is the overall structural schematic diagram of an automatic peeling device for electrode sheets of retired power batteries according to the present invention from another perspective;

[0028] Figure 3 is the front view of the first peeling assembly in an automatic peeling device for electrode sheets of retired power batteries according to the present invention;

[0029] Figure 4 is the present invention Figure 3 the enlarged view at B in;

[0030] Figure 5 is the front view of the second peeling assembly in an automatic peeling device for electrode sheets of retired power batteries according to the present invention;

[0031] Figure 6 is the present invention Figure 5 the enlarged view at C in;

[0032] Figure 7 is the front view of the flattening and tensioning assembly in an automatic peeling device for electrode sheets of retired power batteries according to the present invention.

[0033] In the drawings, the list of components represented by each reference numeral is as follows:

[0034] 1. Frame; 2. Intermittent conveyor belt mechanism; 3. Joint bonding table mechanism; 4. Flattening and tensioning assembly; 5. First peeling assembly; 6. Second peeling assembly; 7. Diaphragm collection assembly; 8. Diaphragm; 9. Positive electrode plate; 10. Negative electrode plate; 301. Working plate; 302. Sliding frame; 303. Electric telescopic rod; 401. Flattening roller; 402. Mounting frame; 403. First pipe; 404. Telescopic column; 405. Spring; 406. Tilt rod; 501. First mounting strip; 502. First smoothing roller; 503. First corner roller; 504. First flattening platform; 505. First height adjustment pipe; 506. First connecting rod; 507. First blade; 508. First concave conveyor belt; 601. Second mounting strip; 602. Second smoothing roller; 603. Second corner roller; 604. Second flattening platform; 605. Second height adjustment pipe; 606. Second connecting rod; 607. Second blade; 608. Second concave conveyor belt; 609. First drive motor; 610. Rubber roller; 701. Collection roll; 702. Second drive motor. Detailed implementation mode

[0035] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention.

[0036] Embodiment 1:

[0037] As Figures 1 - 7 shown, an automatic peeling device for electrode plates of retired power batteries includes a frame 1, on which an intermittent conveyor belt mechanism 2, a joint bonding table mechanism 3, a flattening and tensioning assembly 4, a first peeling assembly 5, a second peeling assembly 6, and a diaphragm collection assembly 7 are provided;

[0038] The joint bonding table mechanism 3 includes a movably arranged working plate 301, the working plate 301 is located in the middle above the intermittent conveyor belt mechanism 2, the flattening and tensioning assembly 4 includes two groups of symmetrically distributed flattening rollers 401, each group of flattening rollers 401 has four, the two groups of flattening rollers 401 are inclined, and the two groups of flattening rollers 401 are located above the side of the intermittent conveyor belt mechanism 2; the first peeling assembly 5 is located on one side of the two groups of flattening rollers 401, the second peeling assembly 6 is located directly above the first peeling assembly 5, the overall structure of the second peeling assembly 6 is basically the same as the overall structure of the first peeling assembly 5, and there is a pair of traction rollers at its end to pull the diaphragm forward, the diaphragm collection assembly 7 includes a detachable collection roll 701, and the collection roll 701 is used to collect the diaphragm 8 and pull the diaphragm 8 forward at the same time; at the same time, the first peeling assembly 5 is used to peel the positive electrode plate 9 under the diaphragm 8, and the second peeling assembly 6 is used to peel the negative electrode plate 10 on the diaphragm 8.

[0039] As Figures 1 - 7As shown, the technology of the present invention is mature and the mechanism is simple. It has a modular structure and programmed control. The total installed capacity is about 3 kw and the floor area is about 2 m 2 , and it is convenient for installation and debugging; it is easy to operate, only one person is needed for operation, and the operation is simple;

[0040] Preferably, the joint bonding table mechanism 3 further includes a sliding frame 302 arranged on the frame body 1. The working plate 301 slides horizontally on the sliding frame 302. An electric telescopic rod 303 is arranged on the sliding frame 302, and the output end of the electric telescopic rod 303 is connected to the side of the working plate 301.

[0041] Preferably, the flattening roller 401 includes a mounting frame 402 arranged on the frame body 1. First tubes 403 are symmetrically arranged on the mounting frame 402. Telescopic columns 404 are movably arranged on the first tubes 403. Springs 405 are sleeved on the telescopic columns 404. The springs 405 and the lower ends of the telescopic columns 404 are jointly connected with inclined rods 406. The two groups of inclined rods 406 are symmetrically distributed. Both ends of the flattening roller 401 are installed on the inclined rods 406 through bearings, and four flattening rollers 401 in each group are arranged in an equidistant array.

[0042] As Figures 1 - 7 shown, in the present invention, under the elastic force of the spring 405, the two groups of flattening rollers 401 flatten the soft package of the battery electrode group, so that the inclined first blade 507 cooperates with the first flattening platform 504 to smoothly peel the positive electrode sheet 9 under the separator 8; at the same time, the inclined second blade 607 cooperates with the second flattening platform 604 to smoothly peel the negative electrode sheet 10 on the separator 8.

[0043] Preferably, the first peeling assembly 5 includes a first mounting strip 501 arranged on the frame body 1. Two first smoothing rollers 502 are arranged on one side of the first mounting strip 501. A first corner roller 503 is arranged at the other end of the first mounting strip 501. A first flattening platform 504 is arranged in the middle of the first mounting strip 501. First height adjusting tubes 505 are arranged on both sides of the first mounting strip 501. The lower side of the first height adjusting tube 505 is hinged with a first connecting rod 506. A first blade 507 is installed on the first connecting rod 506, and the first blade 507 is inclined; the first height adjusting tube 505 includes a fixed square tube and a telescopic square tube that slides up and down in the fixed square tube. A limit bolt that can closely fit with the telescopic square tube is threadedly connected to the end of the fixed square tube. A screw rod is connected to the side of the telescopic square tube. The end of the first connecting rod 506 is sleeved on the screw rod, and a nut for limiting the angle of the first connecting rod 506 is threadedly connected to the screw rod.

[0044] As Figures 1 - 7As shown, in the present invention, by providing the first flattening platform 504, the upper surface of the flattened battery electrode group soft package is attached to the first flattening platform 504, making the flattened battery electrode group soft package flat and having a certain tension, thereby ensuring that the first blade 507 can peel off the positive electrode sheet 9 under the separator 8 smoothly. At the same time, the height and inclination angle of the first blade 507 can be finely adjusted, so as to ensure the peeling effect and achieve precise peeling of the positive electrode sheet 9 under the separator 8.

[0045] Preferably, the second peeling assembly 6 includes a second mounting strip 601 provided on the frame 1. Two second flattening rollers 602 are provided on one side of the second mounting strip 601. The other end of the second mounting strip 601 is provided with a second turning roller 603 and a rubber roller 610. A second flattening platform 604 is provided in the middle of the second mounting strip 601. Second height adjustment tubes 605 are provided on both sides of the second mounting strip 601. The lower side of the second height adjustment tube 605 is hinged with a second connecting rod 606. A second blade 607 is installed on the second connecting rod 606, and the second blade 607 is inclined; the second height adjustment tube 605 includes a fixed square tube and a telescopic square tube that slides up and down in the fixed square tube. The end of the fixed square tube is threadedly connected with a limit bolt that can closely fit the telescopic square tube. A screw rod is connected to the side of the telescopic square tube. The end of the second connecting rod 606 is sleeved on the screw rod, and a nut for limiting the angle of the second connecting rod 606 is threadedly connected to the screw rod.

[0046] In the present invention, the gap between the second turning roller 603 and the rubber roller 610 can be adjusted, and the separator 8 passes through this gap. When the first drive motor 609 is started and the output end drives the second turning roller 603 to rotate, a frictional force is generated with the rubber roller 610 to drive the separator 8 to stretch forward.

[0047] In the present invention, by providing the second flattening platform 604, the upper surface of the flattened battery electrode group soft package after peeling off the positive electrode sheet 9 is attached to the second flattening platform 604, making the flattened battery electrode group soft package flat and having a certain tension after peeling off the positive electrode sheet 9, thereby ensuring that the second blade 607 can peel off the negative electrode sheet 10 on the separator 8 smoothly. At the same time, the height and inclination angle of the second blade 607 can be finely adjusted, so as to ensure the peeling effect and achieve precise peeling of the negative electrode sheet 10 on the separator 8.

[0048] Preferably, a first concave conveyor belt 508 and a second concave conveyor belt 608 are provided on the frame 1. The first concave conveyor belt 508 is located below the first blade 507, and the second concave conveyor belt 608 is located below the second blade 607. One end of the second mounting strip 601 is installed with a first drive motor 609, and the output end of the first drive motor 609 is connected to the second turning roller 603.

[0049] The first concave conveyor belt 508 and the second concave conveyor belt 608 continuously convey the peeled positive electrode sheet 9 or negative electrode sheet 10 respectively, so that the equipment can continue to operate and improve production efficiency.

[0050] Preferably, the diaphragm collecting assembly 7 includes a second driving motor 702 disposed on the frame 1. The rotating shafts at both ends of the collecting roll 701 are placed on the frame 1 through bearings, and the output end of the second driving motor 702 is connected to the rotating shaft at one end of the collecting roll 701.

[0051] As Figures 1 - 7 shown, in the present invention, when the collecting roll 701 is full of the diaphragm 8, the diaphragm 8 is cut off at the collecting roll 701, and a certain length is reserved, and the diaphragm 8 on the collecting roll 701 is directly removed. The rotation speed of the second driving motor 702 is adjustable, the rotation and winding speed of the collecting roll 701 is adjustable, and as the diameter of the roll increases from small to large, the rotation speed can be automatically adjusted and reduced through tension control to ensure that the linear speed remains unchanged.

[0052] Embodiment 2:

[0053] A method for using an automatic stripping device for electrode sheets of retired power batteries includes the following steps:

[0054] Step 1: Initially, a certain length of the diaphragm 8 or a thin rope is reserved on the collecting roll 701, so that the diaphragm 8 or the thin rope can sequentially pass through: the second stripping assembly 6, the first stripping assembly 5, the flattening and tensioning assembly 4 to the joint bonding table mechanism 3;

[0055] Step 2: Place the battery electrode group soft package on the intermittent conveyor belt mechanism 2. When the working plate 301 extends above the intermittent conveyor belt mechanism 2, splice the reserved diaphragm 8 or thin rope on the working plate 301 with the diaphragm 8 of the battery electrode group soft package to be stripped;

[0056] Step 3: Start the first driving motor 609. The output end of the first driving motor 609 drives the second turning roller 603 to rotate. Cooperating with the rubber roller 610, the frictional force between the second turning roller 603 and the rubber roller 610 and the diaphragm 8 is used to drive the diaphragm 8 to be stretched forward. At the same time, the second driving motor 702 drives the collecting roll 701 to rotate to collect the diaphragm 8;

[0057] Step 4: Under the action of the spring 405 pressing towards the middle, the two flattening rollers 401 flatten the battery electrode group soft package. When the flattened and tensioned battery electrode group soft package is pulled by the diaphragm 8 to the first blade 507, the inclined first blade 507 cooperates with the first flattening platform 504 to strip the positive electrode sheet 9 under the diaphragm 8; the first concave conveyor belt 508 collects and transports the positive electrode sheet 9;

[0058] Step 5: Under the continuous pulling of the diaphragm 8, when the flattened and tensioned diaphragm 8 and the negative electrode sheet 10 pass through the second blade 607, the inclined second blade 607 cooperates with the second flattening platform 604 to strip the negative electrode sheet 10 on the diaphragm 8; the second concave conveyor belt 608 collects and transports the negative electrode sheet 10;

[0059] Step 6: Collect the wound collecting diaphragm 8 of the winding 701, splice the diaphragm 8 at the root of the soft package of the battery electrode group with the diaphragm 8 at the end of the soft package of the next battery electrode group together, and complete the continuous automatic peeling and separation of the positive electrode sheet 9 and the negative electrode sheet 10 of the battery electrode group soft package.

[0060] In the present invention, according to the actual production situation, the first peeling assembly 5 may also first peel the negative electrode sheet 10, and then the second peeling assembly 6 peels the positive electrode sheet 9.

[0061] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. An automatic stripping device for the electrode sheets of retired power batteries, characterized in that: It includes a frame body (1), and an intermittent conveyor belt mechanism (2), a joint bonding table mechanism (3), a flattening and tensioning assembly (4), a first peeling assembly (5), a second peeling assembly (6) and a diaphragm collection assembly (7) are provided on the frame body (1); The joint bonding table mechanism (3) includes a movable working plate (301). The working plate (301) is located in the middle above the intermittent conveyor belt mechanism (2). The flattening and tensioning assembly (4) includes two groups of symmetrically distributed flattening rollers (401). Each group of flattening rollers (401) has four. The two groups of flattening rollers (401) are inclined. The two groups of flattening rollers (401) are located above the side of the intermittent conveyor belt mechanism (2). The first peeling assembly (5) is located on one side of the two groups of flattening rollers (401). The second peeling assembly (6) is located directly above the first peeling assembly (5). The overall structure of the second peeling assembly (6) is basically the same as the overall structure of the first peeling assembly (5), and there is an additional pair of traction rollers at its end to pull the diaphragm (8) forward. The diaphragm collection assembly (7) includes a detachable collection roll (701), and the collection roll (701) is used to collect the diaphragm (8). At the same time, the first peeling assembly (5) is used to peel the positive electrode sheet (9) under the diaphragm (8), and the second peeling assembly (6) is used to peel the negative electrode sheet (10) on the diaphragm (8).

2. The automatic stripping device for the electrode plates of retired power batteries according to claim 1, characterized in that: The joint bonding table mechanism (3) further includes a sliding frame (302) provided on the frame body (1). The working plate (301) slides horizontally on the sliding frame (302). An electric telescopic rod (303) is provided on the sliding frame (302), and the output end of the electric telescopic rod (303) is connected to the side of the working plate (301).

3. The automatic stripping device for the electrode plates of retired power batteries according to claim 2, wherein: The flattening roller (401) includes a mounting frame (402) provided on the frame body (1). First tubes (403) are symmetrically provided on the mounting frame (402). Telescopic columns (404) are movably provided on the first tubes (403). Springs (405) are sleeved on the telescopic columns (404). The springs (405) and the lower ends of the telescopic columns (404) are jointly connected with inclined rods (406). The two groups of inclined rods (406) are symmetrically distributed. Both ends of the flattening roller (401) are installed on the inclined rods (406) through bearings. Each group of four flattening rollers (401) are arranged in an equidistant array.

4. The automatic stripping device for the electrode sheet of retired power batteries according to claim 3, wherein: The first peeling assembly (5) includes a first mounting strip (501) provided on the frame body (1). Two first smoothing rollers (502) are provided on one side of the first mounting strip (501). A first turning roller (503) is provided at the other end of the first mounting strip (501). A first flattening table (504) is provided in the middle of the first mounting strip (501). First height adjustment tubes (505) are provided on both sides of the first mounting strip (501). The lower side of the first height adjustment tube (505) is hinged with a first connecting rod (506), and a first blade (507) is installed on the first connecting rod (506). The first blade (507) is inclined.

5. The automatic stripping device for the electrode sheets of retired power batteries according to claim 4, wherein: The second peeling component (6) includes a second mounting strip (601) arranged on the frame body (1). On one side of the second mounting strip (601), there are two second flattening rollers (602). At the other end of the second mounting strip (601), there is a second corner roller (603) and a rubber roller (610). In the middle of the second mounting strip (601), there is a second flattening platform (604). On both sides of the second mounting strip (601), there are second height adjustment tubes (605). At the lower side of the second height adjustment tube (605), a second connecting rod (606) is hinged. A second blade (607) is installed on the second connecting rod (606), and the second blade (607) is arranged obliquely.

6. The automatic stripping device for the electrode plates of retired power batteries according to claim 5, characterized in that: On the frame body (1), there is a first concave conveyor belt (508) and a second concave conveyor belt (608). The first concave conveyor belt (508) is located below the first blade (507), and the second concave conveyor belt (608) is located below the second blade (607). At one end of the second mounting strip (601), a first driving motor (609) is installed. The output end of the first driving motor (609) is connected to the second corner roller (603).

7. An automatic stripping device for retired power battery electrode sheets according to claim 6, characterized in that: The diaphragm collecting component (7) includes a second driving motor (702) arranged on the frame body (1). The rotating shafts at both ends of the collecting roll (701) are placed on the frame body (1) through bearings. The output end of the second driving motor (702) is connected to the rotating shaft at one end of the collecting roll (701).

8. A method for using an automatic stripping device for retired power battery electrode sheets according to any one of claims 1-7, characterized in that: It includes the following steps: Step 1: Initially, reserve a certain length of diaphragm (8) or thin string on the collecting roll (701) so that the diaphragm (8) or thin string can sequentially pass through the second peeling component (6), the first peeling component (5), the flattening and tensioning component (4) to the joint bonding table mechanism (3). Step 2: Place the battery pole group soft package on the intermittent conveyor belt mechanism (2). When the working plate (301) extends above the intermittent conveyor belt mechanism (2), splice the reserved diaphragm (8) or thin string on the working plate (301) with the diaphragm (8) of the battery pole group soft package to be peeled. Step 3: Start the first driving motor (609). The output end of the first driving motor (609) drives the second corner roller (603) to rotate. Cooperating with the rubber roller (610), the frictional force between the second corner roller (603), the rubber roller (610) and the diaphragm (8) is used to drive the diaphragm (8) to stretch forward. At the same time, the second driving motor (702) drives the collecting roll (701) to rotate to collect the diaphragm (8). Step 4: Under the action of the spring (405) squeezing towards the middle, the two flattening rollers (401) flatten the battery pole group soft package. When the flattened and tensioned battery pole group soft package is pulled by the diaphragm (8) to the first blade (507), the inclined first blade (507) cooperates with the first flattening platform (504) to peel the positive electrode sheet (9) under the diaphragm (8); the first concave conveyor belt (508) collects the positive electrode sheet (9). Step 5: Under the continuous pulling of the diaphragm (8), when the flattened diaphragm (8) with a certain tension passes the second blade (607) together with the negative electrode plate (10), the inclined second blade (607) cooperates with the second flattening platform (604) to strip the negative electrode plate (10) from the diaphragm (8); the second concave conveyor belt (608) collects the negative electrode plates (10). Step 6: The collecting reel 701 winds and collects the diaphragm (8), and joins the diaphragm (8) at the root of the soft package of the battery electrode group with the diaphragm (8) at the end of the soft package of the next battery electrode group, completing the continuous automatic stripping and separation of the positive electrode plate (9) and the negative electrode plate (10) of the battery electrode group soft package.

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