Continuous recovery device and method for lithium ion battery positive electrode sheets

Abstract

A continuous recovery device and method for lithium ion battery positive electrode sheets. The recovery device comprises a conveying mechanism (1), a loading mechanism (2), a pulse mechanism (3), and an unloading mechanism (4); the conveying mechanism (1) comprises a conveying line (11) and a plurality of clamps (12), the plurality of clamps (12) are uniformly distributed on the conveying line (11) in the conveying direction of the conveying line (11), and the conveying line (11) is sequentially provided with a loading area (111), a pulse area (112), and an unloading area (113) in the conveying direction of the conveying line (11); the loading mechanism (2) is configured to install a positive electrode sheet to be processed into a clamp (12) in the loading area (111), each clamp (12) is configured to sequentially convey the corresponding positive electrode sheet from the loading area (111) to the unloading area (113) through the pulse area (112), and the pulse area (112) is located on the side of the conveying line (11) facing the ground; the pulse mechanism (3) comprises a first driving member (31) and a pulse member (32), the first driving member (31) is spaced apart from and arranged below the pulse area (112), and the first driving member (31) is transmittingly connected to the pulse member (32), so that the pulse member (32) abuts against the positive electrode sheet; and the unloading mechanism (4) is configured to unload aluminum foil separated from the positive electrode sheet.

Description

Continuous recycling device and method for lithium-ion battery positive electrode sheets Technical Field

[0001] The present application relates to the technical field of positive electrode sheet recycling and processing, for example, to a continuous recycling device and method for lithium-ion battery positive electrode sheets. Background Art

[0002] With the development of new energy technologies, the demand for lithium-ion batteries has surged. However, due to the limited lifespan of lithium-ion batteries, the number of discarded lithium-ion batteries is also increasing. The positive electrode of a lithium-ion battery consists of aluminum foil and an active material layer adhered to the surface of the aluminum foil. By recycling retired lithium-ion batteries, elements such as cobalt and lithium contained in the active material layer can be recovered, reducing the raw material costs of subsequent lithium-ion batteries and alleviating the environmental pollution caused by discarded lithium-ion batteries.

[0003] Using high-voltage pulse discharge to separate the aluminum foil of the positive electrode sheet from the active material layer is a common method for recycling lithium-ion batteries. However, pulse discharge recycling devices in related art cut the complete positive electrode sheet into multiple small pieces. Only one of these small pieces can be fixed between the positive and negative electrodes of the device at a time for high-voltage pulse treatment. After treatment, the small piece is removed and replaced with a new one to be processed, resulting in low production efficiency.

[0004] Summary of the Invention

[0005] The present application provides a continuous recycling device and method for lithium-ion battery positive electrode sheets. The recycling device has a simple structure, a high degree of automation, and high production efficiency.

[0006] The present application provides a continuous recycling device for lithium-ion battery positive electrode sheets, comprising: a conveying mechanism, a loading mechanism, a pulse mechanism, and a unloading mechanism;

[0007] The conveying mechanism includes a conveying line and a plurality of clamps, wherein the plurality of clamps are evenly distributed on the conveying line along the conveying direction of the conveying line, and the conveying line is sequentially provided with a loading area, a pulse area and a unloading area along its own conveying direction;

[0008] The loading mechanism is configured to install the positive electrode sheets to be processed into the fixtures in the loading area, and each of the fixtures is configured to sequentially transfer the positive electrode sheets from the loading area to the unloading area via the pulse area, and the pulse area is located on the side of the conveyor line facing the ground;

[0009] The pulse mechanism includes a first driving member and a pulse member, wherein the first driving member is spaced below the pulse zone and is in transmission connection with the pulse member so that the pulse member selectively presses against the positive electrode sheet;

[0010] The unloading mechanism is configured to unload the aluminum foil after the positive electrode sheets are separated.

[0011] As an optional solution for the continuous recovery device of lithium-ion battery positive plates, the clamp includes a mounting seat, a first elastic member and two clamps spaced apart along a first direction, the ends of the two clamps away from each other are respectively hinged to the mounting seat, the ends of the two clamps adjacent to each other are movable ends, the movable ends are provided with hooks, and the mounting seat is provided with an elastic pressing lock. When the clamp is pressed, the hook is engaged or separated from the elastic pressing lock to clamp or release the movable end to clamp or release the positive plate, and the first elastic member is provided between the clamp and the mounting seat, and the first elastic member has a tendency to drive the movable end to rotate around the hinge point to move away from the mounting seat.

[0012] As an optional solution of the continuous recovery device of lithium-ion battery positive electrode sheets, the elastic pressing lock member includes a fixing seat, an elastic claw and a second elastic member, the fixing seat is provided with a mounting groove, the elastic claw is inserted in the mounting groove and is slidably connected to the groove wall of the mounting groove, and the two ends of the second elastic member are respectively connected to the elastic claw and the groove bottom of the mounting groove, the elastic claw includes two main bodies connected at an angle, the two main bodies are adjacent to each other and are respectively protruded with a first clamping portion, the hook is intermittently clamped with the first clamping portion, and the two main bodies are away from each other and are respectively protruded with a guide portion, the inner side wall of the mounting groove is provided with a guide slide, the guide portion is slidably connected to the guide slide, and the guide slide is provided with a clamping hole, when the guide portion is inserted in the clamping hole, the hook is clamped with the first clamping portion, and after the guide portion is separated from the clamping hole, the hook is separated from the first clamping portion.

[0013] As an optional solution for the continuous recovery device of lithium-ion battery positive plates, the inner side wall of the installation groove is protruding with two stopping parts, and the two stopping parts are correspondingly provided with two groups of guide slides, and the guide slides include short vertical grooves, long oblique grooves, long vertical grooves and short oblique grooves. The lower end of one of the stopping parts is connected to the short vertical groove, the lower end of the short vertical groove is connected to the long oblique groove, and one side of the lower end of the long oblique groove is connected to the long vertical groove, and the upper end of the long vertical groove is connected to the short vertical groove of the other stopping part through the short oblique groove. Each of the long oblique grooves is provided with the clamping hole, and the two clamping holes and the two stopping parts are cross-arranged.

[0014] As an optional solution for the continuous recovery device of lithium-ion battery positive plates, the hook includes a clamping portion and a second clamping portion, the clamping portion is connected to the splint, and the second clamping portion is protruding on both sides of the clamping portion along the second direction. The second direction is set at an angle to the first direction, and the clamping portion passes through the gap between the two first clamping portions to press the main body, and the second clamping portion is intermittently clamped with the first clamping portion.

[0015] As an optional solution for the continuous recovery device of lithium-ion battery positive electrode sheets, the conveyor line is also provided with a locking area and an unlocking area, the locking area is located between the loading area and the pulse area, and the unlocking area is located between the pulse area and the unloading area, the loading mechanism includes a loading component and a locking component, the loading component is spaced apart on one side of the loading area, and is configured to place the positive electrode sheet between the clamping plate and the mounting seat, the locking component is spaced apart on one side of the locking area, and is configured to press the clamping plate so that the hook is engaged with the elastic pressing lock, and the positive electrode sheet is clamped between the clamping plate and the mounting seat; the unloading mechanism includes an unlocking component and a unloading component, the unlocking component is spaced apart on one side of the unlocking area, and is configured to press the clamping plate so that the hook is separated from the elastic pressing lock, and the unloading component is spaced apart on one side of the unloading area, and is configured to remove the aluminum foil from between the clamping plate and the mounting seat.

[0016] As an optional solution for a continuous recovery device for lithium-ion battery positive electrode sheets, the pulse component includes a first pole and a second pole arranged at intervals along the first direction, and the two clamps are respectively provided with first holes corresponding to the first pole and the second pole, and the first pole and the second pole respectively pass through the corresponding first holes and abut against the two ends of the positive electrode sheet.

[0017] As an optional solution of the continuous recovery device for lithium-ion battery positive electrode sheets, the aperture of the first hole gradually decreases from the side away from the mounting seat to the side close to the mounting seat; and / or,

[0018] The mounting seat is provided with a limiting groove configured to limit the position of the positive electrode sheet; and / or,

[0019] The clamping plates are made of conductive material, and the first pole and the second pole are respectively in contact with the two clamping plates.

[0020] As an optional solution for the continuous recovery device of lithium-ion battery positive plates, it also includes a reaction tank, the pulse mechanism is arranged in the reaction tank, the reaction tank is loaded with reaction liquid, and the pulse zone is located below the liquid surface of the reaction liquid.

[0021] As an optional solution for the continuous recovery device of lithium-ion battery positive electrode sheets, the conveying line includes a driven roller arranged in the pulse zone, one end of the driven roller is rotatably connected to the groove wall of the reaction tank, the other end of the driven roller is provided with a fixing pin, and the central axis of the fixing pin is spaced apart from the rotation axis of the driven roller, the first driving member includes a guide seat and a connecting rod, the pulse member is arranged on the guide seat, and guide grooves are recessed on two opposite groove walls of the reaction tank, and the length of the guide groove extends in the vertical direction, the two ends of the guide seat are respectively slidably arranged in the two guide grooves, the guide seat is provided with the connecting rod, and the connecting rod is provided with a waist-shaped hole, the fixing pin is slidably arranged in the waist-shaped hole, the driven roller rotates to drive the fixing pin to push the connecting rod so that the guide seat moves along the guide groove, and the pulse member abuts or is spaced apart from the positive electrode sheet in the pulse zone.

[0022] The present application also provides a method for continuously recycling positive electrode sheets of lithium-ion batteries, which is applied to the above-mentioned continuous recycling device for positive electrode sheets of lithium-ion batteries, and the method comprises:

[0023] The positive electrode sheets to be processed are stacked on one side of the loading area of ​​the conveyor line of the conveying mechanism of the continuous recovery device for positive electrode sheets of lithium ion batteries, and the loading mechanism of the continuous recovery device for positive electrode sheets of lithium ion batteries loads the positive electrode sheets one by one onto the clamp of the loading area;

[0024] The conveyor line transfers the fixture loaded with the positive electrode sheet in the loading area to the pulse area of ​​the conveyor line, and the first driving member of the pulse mechanism of the lithium-ion battery positive electrode sheet continuous recovery device drives the pulse member to rise so that the pulse member abuts against the positive electrode sheet, and the pulse member is energized to separate the aluminum foil of the positive electrode sheet from the active material layer;

[0025] After the aluminum foil is separated from the active material layer, the active material layer freely floats and falls below due to its own gravity for collection. The conveyor line transfers the aluminum foil still clamped on the clamp from the pulse area to the unloading area of ​​the conveyor line, and the unloading mechanism of the lithium-ion battery positive electrode sheet continuous recovery device takes out the aluminum foil in the clamp on the unloading area.

[0026] As an optional solution for the continuous recycling method of lithium-ion battery positive electrode sheets, separating the aluminum foil of the positive electrode sheet from the active material layer includes:

[0027] The pulse zone is set below the liquid level of the reaction liquid in the reaction tank of the lithium ion battery positive plate continuous recovery device. Driven by the conveyor line, the active material layer of the positive plate after the pulse reaction is impacted by the reaction liquid and falls off.

[0028] As an optional solution for the continuous recycling of lithium-ion battery positive plates, it also includes:

[0029] The pulse member is slidably arranged on the side wall of the reaction tank, so that one end of the linkage member is hinged to the end surface of the driven roller on the conveyor line, and the hinge point between the linkage member and the driven roller is spaced apart from the rotation axis of the driven roller. The other end of the linkage member is hinged to the pulse member, and the conveyor line drives the driven roller to rotate, so that the linkage member synchronously drives the pulse member to abut or space between the positive electrode sheet;

[0030] Wherein, the driven roller is rotatably arranged in the pulse zone, and the linkage member is the first driving member.

[0031] As an optional solution to the continuous recycling method of lithium-ion battery positive electrode sheets, the loading mechanism loads the positive electrode sheets one by one onto the fixture in the loading area, including:

[0032] In the loading area, the loading assembly of the loading mechanism places the positive electrode sheet between the clamping plate and the mounting seat of the clamp;

[0033] The conveyor line transfers the clamp loaded with the positive electrode sheet in the loading area to the locking area on the conveyor line, and the locking component of the loading mechanism presses the clamping plate so that the hook of the clamping plate engages with the elastic pressing lock on the mounting seat, so that the positive electrode sheet is clamped between the clamping plate and the mounting seat.

[0034] As an optional solution for the continuous recycling method of lithium-ion battery positive electrode sheets, the conveyor line moves the aluminum foil still clamped on the clamp from the pulse area to the unloading area of ​​the conveyor line, and the unloading mechanism takes out the aluminum foil in the clamp on the unloading area, including:

[0035] The conveyor line transfers the aluminum foil still clamped on the clamp from the pulse zone to the unlocking zone on the conveyor line. The unlocking component of the unloading mechanism presses the clamping plate to separate the hook from the elastic pressing lock. The first elastic member between the clamping plate and the mounting seat drives the clamping plate away from the mounting seat, and the aluminum foil is released from the clamping of the clamping plate and the mounting seat.

[0036] The conveyor line transfers the fixture loaded with the aluminum foil in the unlocking area to the unloading area, and the unloading component of the unloading mechanism takes out the aluminum foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present application will be described below with reference to the accompanying drawings and embodiments.

[0038] FIG1 is a schematic structural diagram of a continuous recovery device for lithium-ion battery positive electrode sheets according to an embodiment of the present application.

[0039] FIG2 is a cross-sectional view of a continuous recovery device for lithium-ion battery positive electrode sheets according to an embodiment of the present application.

[0040] FIG3 is a schematic structural diagram of a clamp according to an embodiment of the present application.

[0041] FIG4 is a schematic structural diagram of an elastic pressing lock according to an embodiment of the present application.

[0042] FIG5 is a schematic diagram of the cooperation between the elastic pressing lock and the hook according to an embodiment of the present application (locked state).

[0043] FIG6 is a schematic diagram of the cooperation between the elastic pressing lock and the hook according to an embodiment of the present application (unlocked state).

[0044] FIG7 is a schematic structural diagram of a guide slideway according to an embodiment of the present application.

[0045] FIG8 is a schematic structural diagram of a pulse mechanism according to an embodiment of the present application.

[0046] FIG9 is a schematic diagram of a continuous recycling method for lithium-ion battery positive electrode sheets according to an embodiment of the present application.

[0047] In the figure: 1. Conveying mechanism; 11. Conveying line; 111. Loading area; 112. Pulsing area; 113. Unloading area; 114. Locking area; 115. Unlocking area; 12. Clamp; 121. Mounting seat; 1211. Limiting groove; 122. First elastic member; 123. Clamping plate; 1231. Movable end; 1232. First hole; 124. Hook; 1241. Abutting portion; 1242. Second clamping portion; 2. Loading mechanism; 21. Loading assembly; 22. Locking assembly; 3. Pulsing mechanism; 31. First driving member; 311. Guide seat; 312. Connecting rod; 3121. Waist-shaped hole; 313. Support rod; 32. Pulsing member; 32 1. First pole; 322. Second pole; 4. Blanking mechanism; 41. Unlocking assembly; 42. Blanking assembly; 5. Elastic pressing lock; 51. Fixing seat; 511. Mounting groove; 512. Clamping hole; 52. Elastic claw; 521. Main body; 522. First clamping part; 523. Guide part; 53. Second elastic part; 54. Guide slide; 541. Short vertical groove; 542. Long oblique groove; 543. Long vertical groove; 544. Short oblique groove; 55. Stopper; 6. Reaction groove; 61. Guide groove; 7. Fixing pin. DETAILED DESCRIPTION

[0048] The technical solutions of the embodiments of the present application will be described below with reference to the accompanying drawings. The described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0049] In the description of this application, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0050] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0051] Typically, pulse discharge is applied to the positive electrode sheet to separate the aluminum foil from the active material layer, allowing for the recovery of elements such as nickel, cobalt, and manganese in the active material layer. The principle of pulse discharge treatment is that applying a high-voltage pulse current to the aluminum foil instantly generates a large amount of heat, vaporizing the active material layer on the foil. This simultaneously generates a breakdown and forms a plasma, which in turn breaks the active material layer into small particles that separate from the foil. Both the active material layer and the aluminum foil can be recycled and reused.

[0052] As shown in Figures 1 and 2, the continuous recovery device for lithium-ion battery positive electrode sheets of the embodiment of the present application includes a conveying mechanism 1, a loading mechanism 2, a pulse mechanism 3 and a discharge mechanism 4. The conveying mechanism 1 includes a conveyor line 11 and a plurality of clamps 12. All clamps 12 are evenly distributed on the conveyor line 11 along the conveying direction of the conveyor line 11. The conveyor line 11 is sequentially provided with a loading area 111, a pulse area 112 and a discharge area 113 along its own conveying direction. The loading mechanism 2 is configured to install the positive electrode sheet to be processed into the loading area 1 11, and each clamp 12 can transfer the positive electrode sheet from the loading area 111 to the pulse area 112 to the unloading area 113 in sequence. The pulse area 112 is located on the side of the conveyor line 11 facing the ground. The pulse mechanism 3 includes a first driving member 31 and a pulse member 32. The first driving member 31 is arranged at intervals below the pulse area 112. The first driving member 31 is connected to the pulse member 32 in transmission so that the pulse member 32 selectively presses against the positive electrode sheet. The unloading mechanism 4 is configured to unload the aluminum foil after the positive electrode sheet is separated.

[0053] The loading area 111 and the unloading area 113 are located on the top surface of the conveyor line 11 to facilitate the smooth loading of the positive electrode sheets and the smooth unloading of the aluminum foil. The pulse area 112 is located on the side of the conveyor line 11 facing the ground, that is, on the bottom surface of the conveyor line 11. Therefore, the positive electrode sheets need to be clamped and fixed by the clamp 12 to ensure the connection stability of the positive electrode sheets. The clamp 12 always clamps the positive electrode sheets between the loading area 111 and the pulse area 112. The aluminum foil after the pulse reaction in the pulse area 112 is always clamped and transferred to the unloading area 113 by the clamp 12. Through the setting of the conveyor line 11 and the clamp 12, the positive electrode sheets clamped on the clamp 12 can be sequentially transferred to the pulse area 112. Cooperating with the first driving member 31, the pulse member 32 is driven to abut against the positive electrode sheet. The high-voltage pulse current passed by the pulse member 32 can flow into the positive electrode sheet to separate the aluminum foil on the positive electrode sheet from the active material layer, thereby realizing the separation and recovery of materials such as cobalt and lithium in the active material layer. By sequentially arranging the loading area 111, the pulse area 112 and the unloading area 113 on the conveyor line 11, cooperating with the loading mechanism 2, the pulse mechanism 3 and the unloading mechanism 4, the positive electrode sheet can be automatically loaded in the loading area 111 through the loading mechanism 2, and then the conveyor line 11 conveys the positive electrode sheet in the loading area 111 to the pulse area 112 for unloading. Automatic high-voltage pulse separation, and finally the conveyor line 11 conveys the aluminum foil separated in the pulse area 112 to the unloading area 113 for automatic unloading through the unloading mechanism 4. Multiple stations work together in parallel to realize the continuous production of automatic loading of positive electrode sheets, automatic pulse and automatic unloading of aluminum foil after pulse. The degree of automation is high, which effectively improves the production efficiency of positive electrode sheet separation and recovery. One person can supervise multiple lithium-ion battery positive electrode sheet continuous recovery device production lines, which reduces labor input, avoids contact between operators and high-voltage pulse structures, and reduces accidents of accidental electric shock to operators.

[0054] In this embodiment, as shown in Figure 3, the clamp 12 includes a mounting seat 121, a first elastic member 122 and two splints 123 arranged at intervals along a first direction (the first direction is the X direction in the figure), the ends of the two splints 123 away from each other are hinged to the mounting seat 121 respectively, and the ends of the two splints 123 adjacent to each other are movable ends 1231, and the movable end 1231 is provided with a hook 124. An elastic pressing lock 5 is provided on the mounting seat 121. By pressing the splint 123, the hook 124 is engaged or separated from the elastic pressing lock 5, so that the movable end 1231 clamps or releases the positive electrode sheet. A first elastic member 122 is provided between the splint 123 and the mounting seat 121. The first elastic member 122 always has a tendency to drive the movable end 1231 to rotate around the hinge point to move away from the mounting seat 121. By setting the hook 124 and the elastic pressing lock 5, the positive electrode sheet is placed on the mounting seat 121, and the two ends of the positive electrode sheet are respectively located under the two clamping plates 123. Pressing once can realize the engagement of the hook 124 and the elastic pressing lock 5, so that the positive electrode sheet can be clamped between the clamping plate 123 and the mounting seat 121; pressing again can realize the separation of the hook 124 and the elastic pressing lock 5, so that the aluminum foil is separated from the clamping of the clamping plate 123 and the mounting seat 121, so that the unloading mechanism 4 can take it out. The structure is simple, the locking and unlocking operations are convenient and time-saving and labor-saving, and the clamp 12 can be opened and closed quickly.

[0055] Optionally, as shown in FIG4 , the elastic pressing lock member 5 includes a fixing seat 51, an elastic claw 52, ​​and a second elastic member 53. The fixing seat 51 is provided with a mounting groove 511. The elastic claw 52 is inserted into the mounting groove 511 and is slidably connected to the groove wall of the mounting groove 511. The two ends of the second elastic member 53 are respectively connected to the elastic claw 52 and the groove bottom of the mounting groove 511. The elastic claw 52 includes two main bodies 521 connected at an angle. The two main bodies 521 are adjacent to each other and are respectively provided with a first clamping portion 522 protruding from one side. The hook 124 is intermittently engaged with the first engaging portion 522. A guide portion 523 is protruded from each side of the two main bodies 521 away from each other. A guide slide 54 is provided on the inner sidewall of the mounting groove 511. The guide portion 523 is slidably connected to the guide slide 54, and the guide slide 54 is provided with an engaging hole 512. When the guide portion 523 is inserted into the engaging hole 512, the hook 124 engages with the first engaging portion 522. When the guide portion 523 is separated from the engaging hole 512, the hook 124 is separated from the first engaging portion 522. The second elastic member 53 is provided to constantly drive the elastic claw 52 toward the bottom of the mounting groove 511, so that the guide portion 523 always engages the engaging hole 512, ensuring the engagement stability of the elastic press lock 5. In addition, the mounting seat 121 can be recessed with an air-avoiding groove so that the bottom of the positive electrode sheet is exposed except for the two ends in the length direction, so as to facilitate the desorption of the active material layer of the positive electrode sheet after the active material layer and the aluminum foil are separated, reduce the situation where the active material layer is still pressed on the aluminum foil by the clamp 12, improve the separation effect of the pulse active material layer and the aluminum foil, and reduce the waste of the active material layer.

[0056] As shown in Figures 5 and 6, the mounting groove 511 is a cylindrical groove. Here, the unlocked state and the locked state of the clamp 12 are explained as an example. Press the splint 123. Under the push of the hook 124, the elastic claw 52 overcomes the elastic action of the first elastic member 122 and slides downward along the groove wall of the mounting groove 511. At the same time, the elastic claw 52 rotates 90 degrees along the central axis of the mounting groove 511 so that the guide portion 523 is engaged with the engaging hole 512. At this time, the first engaging portion 522 clamps the hook 124 to achieve the locking of the hook 124. At this time, the clamp 12 In the locked state, the positive electrode sheet is clamped between the clamping plate 123 and the mounting seat 121; press the clamping plate 123 again, and under the push of the hook 124, the guide part 523 is separated from the clamping hole 512, and under the guidance of the guide slide 54, the elastic claw 52 rotates 90 degrees along the groove wall of the mounting groove 511. At this time, the hook 124 is disengaged from the clamping of the first clamping part 522, and the movable end 1231 of the clamping plate 123 moves in the direction away from the mounting seat 121 under the elastic force of the first elastic member 122 to open the clamp 12. The structure is simple and easy to operate.

[0057] Optionally, the bottom end surface of the guide portion 523 is an inclined surface, which is inclined downward from the end away from the elastic claw 52 to the end close to the elastic claw 52, ​​so that when the hook 124 presses the elastic claw 52, ​​the guide portion 523 can be separated from the engaging hole 512 along the inclined surface. Of course, the edge of the engaging hole 512 can also be provided with a certain chamfer to facilitate the separation and guidance of the guide portion 523.

[0058] For example, as shown in Figures 4, 6 and 7, two stopping portions 55 are protruding from the inner side wall of the mounting groove 511, and two groups of guide slides 54 are correspondingly provided on the two stopping portions 55. The guide slides 54 include a short vertical groove 541, a long oblique groove 542, a long vertical groove 543 and a short oblique groove 544. The lower end of a stopping portion 55 is connected to the short vertical groove 541, the lower end of the short vertical groove 541 is connected to the long oblique groove 542, and one side of the lower end of the long oblique groove 542 is connected to the long vertical groove 543. The upper end of the long vertical groove 543 is connected to the short vertical groove 541 of the other stopping portion 55 through the short oblique groove 544. Each long oblique groove 542 is provided with a snap-in hole 512, and the two snap-in holes 512 and the two stopping portions 55 are arranged in a cross-staggered manner. The setting of the guide slide 54 can effectively ensure the sliding guidance of the guide part 523, improve the accuracy of the engagement or separation between the guide part 523 and the engagement hole 512, and thus improve the accuracy of the engagement or separation between the first engagement part 522 and the hook 124.

[0059] As shown in Figures 5 and 6, the hook 124 includes a pressing portion 1241 and a second clamping portion 1242. The pressing portion 1241 is connected to the clamping plate 123. The pressing portion 1241 is provided with second clamping portions 1242 protruding on both sides along the second direction (the second direction is the Y direction shown in the figure). The second direction is set at an angle to the first direction. In this embodiment, the first direction is set perpendicular to the second direction. The pressing portion 1241 can pass through the gap between the two first clamping portions 522 to press the main body 521, and the second clamping portion 1242 is intermittently clamped with the first clamping portion 522. That is, in the unlocked state, the second clamping portion 1242 is perpendicular to the first clamping portion 522. At this time, the end of the clamping portion 1241 away from the splint 123 and the second clamping portion 1242 can pass through the gap between the two first clamping portions 522 and enter the space between the two main bodies 521. When the clamping portion 1241 presses the elastic claw 52 to rotate 90 degrees, the first clamping portion 522 is parallel to the second clamping portion 1242, and the top of the second clamping portion 1242 is clamped on the bottom side of the first clamping portion 522, thereby achieving the purpose of locking the hook 124 and the elastic pressing lock 5.

[0060] The specific working process of clamping and loosening the clamp 12 is as follows: pressing the splint 123 to make the second clamping portion 1242 of the hook 124 pass through the gap between the two first clamping portions 522, and the pressing portion 1241 pushes the elastic claw 52 to move downward, so that the guide portion 523 enters the long oblique groove 542 along the short vertical groove 541 and is clamped into the clamping hole 512. During this process, the elastic claw 52 rotates 90 degrees to make the first clamping portion 522 and the second clamping portion 1242 clamped to complete the locking of the hook 124 and the elastic pressing lock 5, thereby realizing the clamping of the splint 123 to the positive electrode sheet; pressing the splint 123 again, the pressing portion 1241 pushes the elastic claw 52 to move downward, so that the guide portion 523 is disengaged After hole 512, it continues along the long oblique groove 542 to enter the bottom of the long vertical groove 543, and releases the pressure on the clamp 123. Under the elastic force of the second elastic member 53, the elastic claw 52 drives the guide part 523 to move upward along the long vertical groove 543, and is guided to the bottom of the stop part 55 through the short oblique groove 544. During this process, the elastic claw 52 rotates 90 degrees. At this time, the first clamping part 522 is separated from the second clamping part 1242. Under the elastic action of the first elastic member 122, the tightening part 1241 drives the second clamping part 1242 to disengage from between the two first clamping parts 522 to complete the unlocking of the hook 124 and the elastic pressing lock 5, and reciprocates in sequence to realize the clamping and loosening of the clamp 12, which is simple and flexible to operate. The first elastic member 122 and the second elastic member 53 can be directly springs. Of course, the first elastic member 122 can also be a torsion spring. The torsion spring is sleeved on the connecting shaft between the clamping plate 123 and the mounting seat 121, which will not be described in detail here.

[0061] As shown in FIG2 , the conveyor line 11 is further provided with a locking area 114 and an unlocking area 115 . The locking area 114 is located between the loading area 111 and the pulse area 112 , and the unlocking area 115 is located between the pulse area 112 and the unloading area 113 . The loading mechanism 2 includes a loading component 21 and a locking component 22 . The loading component 21 is spaced apart on one side of the loading area 111 and is configured to place the positive electrode sheet between the clamping plate 123 and the mounting seat 121 . The locking component 22 is spaced apart on one side of the locking area 114 . It is configured to press the splint 123 so that the hook 124 is engaged with the elastic pressing lock 5, so that the positive electrode sheet is clamped between the splint 123 and the mounting seat 121; the unloading mechanism 4 includes an unlocking component 41 and a unloading component 42, the unlocking component 41 is arranged at intervals on one side of the unlocking area 115, and is configured to press the splint 123 to separate the hook 124 from the elastic pressing lock 5, and the unloading component 42 is arranged at intervals on one side of the unloading area 113, and is configured to remove the aluminum foil from between the splint 123 and the mounting seat 121.

[0062] The loading assembly 21 and the unloading assembly 42 can be directly operated by a robot combined with a clamp and a form. The locking assembly 22 and the unlocking assembly 41 respectively adopt a second driving member and a third driving member. In the initial state, the clamp 12 is set at an angle between the clamp 123 and the mounting seat 121, so that there is a storage space for the positive electrode sheet between the clamp 123 and the mounting seat 121. The robot of the loading assembly 21 drives the first clamp to place the positive electrode sheet to be processed from the outside on the clamp 12 of the loading area 111 to realize automatic loading of the positive electrode sheet. The locking assembly 22, that is, the second driving member, presses the clamp 123 so that the hook 124 on the clamp 123 is engaged with the elastic pressing lock 5 to realize stable clamping of the positive electrode sheet by the clamp 123 and the mounting seat 121. After the pulse reaction in the pulse area 112, the clamp 12 loaded with aluminum foil is transferred to the unlocking area 115, and the third driving member presses the clamp 123. This disengages the hook 124 from the elastic pressing lock 5, and the movable end 1231 of the clamp 123 opens, facilitating the transfer of the clamp 12 to the unloading area 113. The robot of the unloading assembly 42 drives the second clamping jaw to unload the aluminum foil. The unloading clamp 12 is then transferred from the unloading area 113 to the loading area 111, and this reciprocating process is repeated, achieving continuous pulse recovery of the positive electrode sheets. The first, second, and third drive members can utilize linear drive structures such as pneumatic cylinders or electric cylinders, and the second and third drive members can simultaneously press the two clamps 123. In other embodiments, the loading assembly 21 and the unloading assembly 42 can also utilize structures such as robot-driven suction cups. The provision of the locking area 114 and the unlocking area 115 separates them from the loading area 111 and the unloading area 113, allowing multiple processes to operate independently without interference, and with a short waiting time between separate operations, effectively improving the production efficiency of the continuous recovery device for lithium-ion battery positive electrode sheets.

[0063] In some embodiments, as shown in FIG8 , the pulse member 32 includes a first pole 321 and a second pole 322 spaced apart along a first direction. Two clamping plates 123 are provided with first holes 1232 corresponding to the first pole 321 and the second pole 322, respectively. The first pole 321 and the second pole 322 pass through the corresponding first holes 1232 and abut against the ends of the positive electrode sheet. Because aluminum foil is conductive, the aluminum foil of the positive electrode sheet is exposed at least at the position relative to the first holes 1232. The first pole 321 and the second pole 322 abut against the ends of the aluminum foil to form an electrical circuit, allowing the pulse current to flow through the aluminum foil. Through the setting of the first hole 1232, when the first pole 321 and the second pole 322 abut against the positive electrode sheet, the side of the positive electrode sheet away from the first pole 321 or the second pole 322 is supported by the mounting base 121, thereby preventing the positive electrode sheet from being punctured by the first pole 321 or the second pole 322, or from being pushed and displaced by the first pole 321 or the second pole 322, thereby effectively ensuring the structural and positional stability of the positive electrode sheet during pulse discharge reaction.

[0064] Optionally, the aperture of the first hole 1232 gradually decreases from the side away from the mounting base 121 to the side close to the mounting base 121. That is, the inclined hole wall of the first hole 1232 can serve as a guide surface when the first pole 321 and the second pole 322 move toward the positive electrode sheet, thereby improving the abutment stability of the first pole 321 and the second pole 322 with the positive electrode sheet. In addition, a limiting groove 1211 is provided on the mounting base 121 to limit the position of the positive electrode sheet. The setting of the limiting groove 1211 facilitates improving the positional stability of the first pole sheet. Of course, the clamping plate 123 is made of a conductive material, and the first pole 321 and the second pole 322 are respectively in abutment with the two clamping plates 123. In this embodiment, the first pole 321 and the second pole 322 are in contact with the wall of the first hole 1232, that is, in addition to the first pole 321 and the second pole 322 being in contact with the aluminum foil themselves, they can also be in contact with the aluminum foil through the clamping plate 123 to ensure the stability of the connection between the first pole 321 and the second pole 322 and the aluminum foil, thereby avoiding the exposed part of the aluminum foil on the positive electrode sheet being separated from the first pole 321 or the second pole 322 and failing to form a complete power circuit. In addition, the mounting base 121 is made of insulating material, which improves the stability of the current flow and prevents the current from being conducted to the transmission line 11 and affecting the operation of other structures. The first pole 321 and the second pole 322 are respectively the positive pole and the negative pole, which are connected to the positive and negative pulse currents respectively.

[0065] As shown in FIG2 , the continuous recovery device for lithium-ion battery positive electrode sheets further includes a reaction tank 6, a pulse mechanism 3 disposed within the reaction tank 6, the reaction tank 6 being loaded with a reaction solution, and a pulse zone 112 located below the liquid surface of the reaction solution. The provision of the reaction tank 6 and the placement of the pulse zone 112 below the liquid surface of the reaction solution allow the active material layer after separation of the positive electrode sheets to float in the reaction solution, preventing the active material layer from vaporizing into particles and drifting away with the air, thereby helping to improve the recovery rate of the active material layer. Furthermore, the transmission coordination of the conveyor line 11 allows the active material layer that is partially adhered to the aluminum foil to fall off due to relative impact with the reaction solution, thereby improving the desorption effect of the active material layer.

[0066] In other embodiments, as shown in Figures 2 and 8, the conveyor line 11 includes a driven roller arranged in the pulse zone 112, one end of the driven roller is rotatably connected to the groove wall of the reaction tank 6, and the other end is provided with a fixed pin 7, and the central axis of the fixed pin 7 is spaced apart from the rotation axis of the driven roller. The first driving member 31 includes a guide seat 311 and a connecting rod 312, the pulse member 32 is arranged on the guide seat 311, and a guide groove 61 is recessed on the two opposite groove walls of the reaction tank 6, and the length of the guide groove 61 extends in the vertical direction. The two ends of the guide seat 311 are respectively slidably arranged in the two guide grooves 61, and a connecting rod 312 is provided on the guide seat 311. The connecting rod 312 is provided with a waist-shaped hole 3121, and the fixed pin 7 is slidably arranged in the waist-shaped hole 3121. The driven roller rotates to drive the fixed pin 7 to push the connecting rod 312, so that the guide seat 311 moves along the guide groove 61, so that the pulse member 32 is abutted or spaced with the positive electrode sheet of the pulse zone 112.

[0067] A support rod 313 is provided on the guide seat 311 . A connecting rod 312 is provided at one end of the support rod 313 away from the guide seat 311 . The length of the connecting rod 312 extends in the horizontal direction, that is, the length of the waist-shaped hole 3121 extends in the horizontal direction. Under the drive of the conveyor line 11, the driven roller makes a circular motion. When the fixed pin 7 eccentrically arranged on the end face of the driven roller moves from the lowest point to the highest point, it drives the support rod 313 to make the guide seat 311 move up along the guide groove 61, so that the pulse member 32 fixed on the guide seat 311 rises and abuts against the positive electrode sheet; when the fixed pin 7 moves from the highest point to the lowest point as the driven roller rotates, it drives the support rod 313 to make the guide seat 311 move down along the guide groove 61, so that the pulse member 32 fixed on the guide seat 311 moves down and is spaced apart from the current collector, so that the conveyor line 11 transfers the positive electrode sheet in the next clamp 12 to the pulse zone 112, and transfers the current collector separated in the pulse zone 112 from the pulse zone 112 to the unloading zone 113. By rotating the driven roller, the fixed pin 7 is driven to cooperate with the support rod 313 to realize the driving of the pulse member 32, effectively improving the contact between the pulse member 32 and the positive electrode sheet and the consistency of the positive electrode sheet transmission by the conveyor line 11, and reducing the setting of additional active driving mechanisms, reducing energy consumption and reducing the investment in equipment production costs.

[0068] Optionally, the conveyor line 11 is at least partially located outside the slot of the reaction tank 6, and the loading area 111, the locking area 114, the unlocking area 115 and the unloading area 113 are all located outside the slot of the reaction tank 6 to facilitate the loading of the positive electrode sheet and the unloading of the aluminum foil, and to ensure the stability of the positive electrode sheet and the aluminum foil on the conveyor line 11, to prevent the positive electrode sheet or the aluminum foil from falling off from the clamp 12.

[0069] As shown in FIG9 , the present application further provides a method for continuously recycling positive electrode sheets of lithium-ion batteries, which is applied to the continuous recycling device for positive electrode sheets of lithium-ion batteries in any of the above embodiments. The method for continuously recycling positive electrode sheets of lithium-ion batteries comprises the following steps:

[0070] S10. The positive electrode sheets to be processed are stacked on one side of the loading area 111 of the conveying line 11 of the conveying mechanism 1 of the continuous recycling device for lithium-ion battery positive electrode sheets. The loading mechanism 2 of the continuous recycling device for lithium-ion battery positive electrode sheets loads the positive electrode sheets one by one onto the clamp 12 of the loading area 111.

[0071] S20, the conveyor line 11 transfers the clamp 12 loaded with the positive electrode sheet in the loading area 111 to the pulse area 112 of the conveyor line 11, and the first driving member 31 of the pulse mechanism 3 of the lithium-ion battery positive electrode sheet continuous recovery device drives the pulse member 32 to rise so that the pulse member 32 abuts against the positive electrode sheet, and the pulse member 32 is energized to separate the aluminum foil of the positive electrode sheet from the active material layer.

[0072] S30, after the aluminum foil is separated from the active material layer, the active material layer freely floats down due to its own gravity for collection, and the conveyor line 11 transfers the aluminum foil still clamped on the clamp 12 from the pulse area 112 to the unloading area 113 of the conveyor line 11, and the unloading mechanism 4 of the lithium-ion battery positive electrode continuous recovery device takes out the aluminum foil in the clamp 12 in the unloading area 113.

[0073] In the above method, the positive electrode sheets are conveyed by the conveyor line 11 in combination with the clamp 12 so that the positive electrode sheets can be transferred one by one to the pulse zone 112. The first driving member 31 of the pulse mechanism 3 drives the pulse member 32 to desorb and separate the positive electrode sheets by pulse discharge. After desorption and separation, the aluminum foil is driven by the conveyor line 11 to leave the pulse zone 112, and at the same time, the next untreated positive electrode sheet is driven to enter the pulse zone 112 for pulse discharge, which can realize continuous pulse discharge recovery processing of the positive electrode sheets and improve the recovery efficiency of the positive electrode sheet pulse discharge. Through the setting of the loading mechanism 2 and the unloading mechanism 4, the automatic loading of the positive electrode sheets to be processed and the automatic unloading of the aluminum foil after the pulse reaction can be realized, with a high degree of automation, reducing the input of manpower, and avoiding the contact between the operator and the high-voltage pulse structure, reducing the accidental electric shock of the operator.

[0074] When the continuous recovery device for lithium-ion battery positive electrode sheets is provided as in the aforementioned technical solution, the continuous recovery device for lithium-ion battery positive electrode sheets also provides a reaction tank 6, and the pulse zone 112 is set below the liquid surface of the reaction liquid in the reaction tank 6. Driven by the conveying line 11, the active material layer after the pulse reaction of the positive electrode sheet can be impacted by the reaction liquid and fall off. The separated active material layer can float in the reaction liquid, avoiding the active material layer vaporized into particles and floating away with the air, which helps to improve the recovery rate of the positive electrode material.

[0075] Optionally, as shown in Figures 2 and 8, the conveyor line 11 also provides a driven roller rotatably set in the pulse zone 112, and the first driving member 31 is a linkage member, and the pulse member 32 is slidably set on the side wall of the reaction tank 6, so that one end of the linkage member is hinged on the end face of the driven roller, and the hinge point between the linkage member and the driven roller is spaced apart from the rotation axis of the driven roller, and the other end is hinged to the pulse member 32. In step S20, the conveyor line 11 drives the driven roller to rotate, so that the linkage member synchronously drives the pulse member 32 to abut or space the positive electrode sheet, effectively improving the abutment between the pulse member 32 and the positive electrode sheet and the consistency of the positive electrode sheet transmission by the conveyor line 11, and can reduce the setting of additional active driving mechanisms, reduce energy consumption and reduce the investment in equipment production costs.

[0076] As shown in FIG2 and FIG3 , the conveyor line 11 further provides a locking area 114 , and step S10 includes the following specific steps:

[0077] S101 , in the loading area 111 , the loading assembly 21 of the loading mechanism 2 places the positive electrode sheet between the clamping plate 123 of the fixture 12 and the mounting seat 121 .

[0078] S102, the conveyor line 11 transfers the clamp 12 loaded with the positive electrode sheet in the loading area 111 to the locking area 114, and the locking component 22 of the loading mechanism 2 presses the clamp 123 so that the hook 124 of the clamp 123 is engaged with the elastic pressing lock 5 on the mounting seat 121, so that the positive electrode sheet is clamped between the clamp 123 and the mounting seat 121.

[0079] By setting the locking area 114, this method is applied to divide the discharge and locking of the positive electrode sheet by the clamp 12 into two interval processes, reducing the interference and waiting time between the loading component 21 and the locking component 22, and being able to load the next clamp 12 while one clamp 12 completes locking, effectively improving the working efficiency of the loading mechanism 2, thereby improving the overall production efficiency of the lithium-ion battery positive electrode sheet continuous recovery device.

[0080] The conveyor line 11 further provides an unlocking area 115. Step S30 includes the following specific steps:

[0081] S301, the conveyor line 11 transfers the aluminum foil still clamped on the clamp 12 from the pulse area 112 to the unlocking area 115, and the unlocking component 41 of the unloading mechanism 4 presses the clamping plate 123 to separate the hook 124 from the elastic pressing lock 5. The first elastic member 122 between the clamping plate 123 and the mounting seat 121 drives the clamping plate 123 away from the mounting seat 121, and the aluminum foil is released from the clamping of the clamping plate 123 and the mounting seat 121.

[0082] S302 , the conveyor line 11 transfers the fixture 12 loaded with aluminum foil from the unlocking area 115 to the unloading area 113 , and the unloading component 42 of the unloading mechanism 4 takes out the aluminum foil.

[0083] By setting up the unlocking zone 115, the method is applied to divide the unlocking and unloading of the remaining aluminum foil by the clamp 12 after the pulse reaction into two separate processes, thereby reducing the mutual interference and waiting time between the unlocking component 41 and the unloading component 42. While unloading is being carried out in the unloading zone 113, the previous clamp 12 can be unlocked in the unlocking zone 115. The two workstations are processed in parallel, which effectively improves the working efficiency of the unloading mechanism 4, thereby improving the overall production efficiency of the lithium-ion battery positive electrode sheet continuous recovery device.

[0084] The beneficial effects of the embodiment of the present application are as follows: by setting up the conveyor line and the clamp, the positive electrode sheets clamped on the clamp can be sequentially conveyed to the pulse zone, and the first driving member drives the pulse member to abut against the positive electrode sheet, and the high-voltage pulse current passed by the pulse member can flow into the positive electrode sheet to separate the aluminum foil on the positive electrode sheet from the active material layer, thereby realizing the separation and recovery of materials such as cobalt and lithium in the active material layer; by sequentially setting up the loading zone, the pulse zone and the unloading zone on the conveyor line, and coordinating the loading mechanism, the pulse mechanism and the unloading mechanism, the positive electrode sheets can be automatically loaded in the loading zone through the loading mechanism, and then the conveyor line can load the materials in the loading zone to the positive electrode sheet. The positive electrode sheet is transported to the pulse area for automatic high-voltage pulse separation. Finally, the conveyor line transports the aluminum foil separated in the pulse area to the unloading area for automatic unloading by the unloading mechanism. Multiple stations work together in parallel to realize the continuous production of automatic loading of positive electrode sheets, automatic pulse and automatic unloading of aluminum foil after pulse. The high degree of automation effectively improves the production efficiency of positive electrode sheet separation and recovery. One person can supervise multiple lithium-ion battery positive electrode sheet continuous recovery device production lines, which reduces labor input, avoids contact between operators and high-voltage pulse structures, and reduces accidents of accidental electric shock to operators.

[0085] In the description of this document, the terms "upper", "lower", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on this application.

[0086] In the description of this specification, the reference term "an embodiment" or the like means that the specific features, structures, materials, or characteristics of the embodiment are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment.

[0087] In addition, although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in multiple embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A continuous recycling device for lithium-ion battery positive electrode sheets, comprising: A conveying mechanism (1), a feeding mechanism (2), a pulse mechanism (3) and a discharging mechanism (4); The conveying mechanism (1) includes a conveyor line (11) and a plurality of jigs (12). The plurality of jigs (12) are evenly arranged on the conveyor line (11) along the conveying direction of the conveyor line (11). The conveyor line (11) is sequentially provided with a feeding area (111), a pulse area (112) and a discharging area (113) along its own conveying direction; The feeding mechanism (2) is configured to install the positive electrode sheet to be processed into the jig (12) in the feeding area (111), and each jig (12) is configured to convey the positive electrode sheet from the feeding area (111) through the pulse area (112) to the discharging area (113) in sequence. The pulse area (112) is located on the side of the conveyor line (11) facing the ground; The pulse mechanism (3) includes a first driving member (31) and a pulse member (32). The first driving member (31) is arranged at intervals below the pulse area (112). The first driving member (31) is in transmission connection with the pulse member (32) to enable the pulse member (32) to selectively press against the positive electrode sheet; The discharging mechanism (4) is configured to discharge the aluminum foil after the positive electrode sheet is separated.

2. The continuous recycling device for the positive electrode sheet of a lithium-ion battery according to claim 1, wherein, The jig (12) includes a mounting seat (121), a first elastic member (122) and two clamping plates (123) arranged at intervals along a first direction. The two ends of the two clamping plates (123) away from each other are respectively hinged to the mounting seat (121). The ends of the two clamping plates (123) adjacent to each other are movable ends (1231). A hook (124) is arranged at the movable end (1231). An elastic pressing lock (5) is arranged on the mounting seat (121). When the clamping plate (123) is pressed, the hook (124) is engaged or separated from the elastic pressing lock (5) to clamp or release the positive electrode sheet at the movable end (1231). The first elastic member (122) is arranged between the clamping plate (123) and the mounting seat (121). The first elastic member (122) has a moving tendency to drive the movable end (1231) to rotate around the hinge point to move away from the mounting seat (121).

3. The continuous recycling device for the positive electrode sheet of a lithium-ion battery according to claim 2, wherein, The elastic pressing lock (5) includes a fixed seat (51), elastic claws (52) and a second elastic member (53). The fixed seat (51) is provided with an installation groove (511). The elastic claws (52) are inserted into the installation groove (511) and are slidably connected to the groove wall of the installation groove (511). The two ends of the second elastic member (53) are respectively connected to the elastic claws (52) and the bottom of the installation groove (511). The elastic claws (52) include two main body parts (521) connected at an angle. On one side where the two main body parts (521) are adjacent to each other, first clamping parts (522) are respectively protrudingly arranged. The hook (124) is intermittently clamped with the first clamping part (522). On one side where the two main body parts (521) are away from each other, guiding parts (523) are respectively protrudingly arranged. A guiding slideway (54) is arranged on the inner side wall of the installation groove (511). The guiding part (523) is slidably connected to the guiding slideway (54), and a clamping hole (512) is arranged on the guiding slideway (54). When the guiding part (523) is inserted into the clamping hole (512), the hook (124) is clamped with the first clamping part (522). After the guiding part (523) is separated from the clamping hole (512), the hook (124) is separated from the first clamping part (522).

4. The lithium-ion battery cathode sheet continuous recycling device according to claim 3, wherein, Two stopping parts (55) are protrudingly arranged on the inner side wall of the installation groove (511). Two groups of guiding slideways (54) are correspondingly arranged for the two stopping parts (55). The guiding slideway (54) includes a short vertical groove (541), a long inclined groove (542), a long vertical groove (543) and a short inclined groove (544). The lower end of one stopping part (55) is connected to the short vertical groove (541). The lower end of the short vertical groove (541) is connected to the long inclined groove (542). One side of the lower end of the long inclined groove (542) is connected to the long vertical groove (543). The upper end of the long vertical groove (543) is connected to the short vertical groove (541) of the other stopping part (55) through the short inclined groove (544). The clamping hole (512) is arranged on each long inclined groove (543). The two clamping holes (512) and the two stopping parts (55) are arranged in a crosswise manner.

5. The continuous recycling device for the positive electrode sheet of a lithium-ion battery according to claim 3, wherein, The hook (124) includes a pressing part (1241) and a second clamping part (1242). The pressing part (1241) is connected to the clamping plate (123). The second clamping parts (1242) are respectively protrudingly arranged on both sides of the pressing part (1241) along the second direction. The second direction is arranged at an angle with the first direction. The pressing part (1241) passes through the gap between the two first clamping parts (522) to press the main body part (521). The second clamping part (1242) is intermittently clamped with the first clamping part (522).

6. The continuous recovery device for the positive electrode sheet of a lithium-ion battery according to claim 2, wherein, The conveyor line (11) is further provided with a locking area (114) and an unlocking area (115). The locking area (114) is located between the loading area (111) and the pulse area (112), and the unlocking area (115) is located between the pulse area (112) and the unloading area (113). The loading mechanism (2) includes a loading component (21) and a locking component (22). The loading component (21) is arranged at intervals on one side of the loading area (111) and is configured to place the positive electrode sheet between the clamping plate (123) and the mounting seat (121). The locking component (22) is arranged at intervals on one side of the locking area (114) and is configured to press the clamping plate (123) so that the hook (124) is clamped with the elastic pressing lock (5). The positive electrode sheet is clamped between the clamping plate (123) and the mounting seat (121). The unloading mechanism (4) includes an unlocking component (41) and an unloading component (42). The unlocking component (41) is arranged at intervals on one side of the unlocking area (115) and is configured to press the clamping plate (123) so that the hook (124) is separated from the elastic pressing lock (5). The unloading component (42) is arranged at intervals on one side of the unloading area (113) and is configured to take out the aluminum foil from between the clamping plate (123) and the mounting seat (121).

7. The continuous recovery device for lithium-ion battery positive electrode sheets according to any one of claims 2-6, wherein, The pulse member (32) includes a first pole column (321) and a second pole column (322) arranged at intervals along the first direction. Two clamping plates (123) are respectively provided with first holes (1232) corresponding to the first pole column (321) and the second pole column (322). The first pole column (321) and the second pole column (322) respectively pass through the corresponding first holes (1232) and abut against both ends of the positive electrode sheet.

8. The continuous recycling device for the positive electrode sheet of a lithium-ion battery according to claim 7, wherein, The aperture of the first hole (1232) gradually decreases from the side away from the mounting seat (121) towards the side close to the mounting seat (121); and / or, The mounting seat (121) is provided with a limiting groove (1211) configured to limit the position of the positive electrode sheet; and / or, The clamping plate (123) is made of a conductive material, and the first pole column (321) and the second pole column (322) respectively abut against the two clamping plates (123).

9. The lithium-ion battery positive electrode sheet continuous recovery device according to any one of claims 1-6 further includes a reaction tank (6). The pulse mechanism (3) is arranged in the reaction tank (6). The reaction tank (6) is filled with a reaction liquid, and the pulse area (112) is located below the liquid level of the reaction liquid.

10. The continuous recycling device for the positive electrode sheet of a lithium-ion battery according to claim 9, wherein, The conveyor line (11) includes a driven roller (116) disposed in the pulse region (112). One end of the driven roller (116) is rotatably connected to the tank wall of the reaction tank (6). A fixing pin (7) is provided at the other end of the driven roller (116), and the central axis of the fixing pin (7) is spaced from the rotation axis of the driven roller (116). The first driving member (31) includes a guiding seat (311) and a connecting rod (312). The pulse member (32) is disposed on the guiding seat (311). Guiding grooves (61) are recessed in two opposite tank walls of the reaction tank (6), and the length of the guiding grooves (61) extends in the vertical direction. Two ends of the guiding seat (311) are respectively slidably disposed in the two guiding grooves (61). The connecting rod (312) is provided on the guiding seat (311), and a waist-shaped hole (3121) is provided on the connecting rod (312). The fixing pin (7) is slidably disposed in the waist-shaped hole (3121). The driven roller (116) rotates to drive the fixing pin (7) to push the connecting rod (312), so that the guiding seat (311) moves along the guiding groove (61). The pulse member (21) abuts against or is spaced from the positive electrode sheet in the pulse region (112).

11. A method for continuously recycling a positive electrode sheet of a lithium-ion battery, which is applied to the lithium-ion battery positive electrode sheet continuous recycling device according to any one of claims 1-10. The method includes: Stacking the positive electrode sheets to be processed on one side of the feeding area (111) of the conveyor line (11) of the conveying mechanism (1) of the lithium-ion battery positive electrode sheet continuous recycling device. The feeding mechanism (2) of the lithium-ion battery positive electrode sheet continuous recycling device feeds the positive electrode sheets one by one onto the fixture (12) in the feeding area (111); The conveyor line (11) transfers the fixture (12) loaded with the positive electrode sheet in the feeding area (111) to the pulse region (112) of the conveyor line (11). The first driving member (31) of the pulse mechanism (3) of the lithium-ion battery positive electrode sheet continuous recycling device drives the pulse member (32) to rise, so that the pulse member (32) abuts against the positive electrode sheet. The pulse member (32) is energized to separate the aluminum foil of the positive electrode sheet from the active material layer; After the aluminum foil is separated from the active material layer, the active material layer freely floats and falls downward due to its own gravity for collection. The conveyor line (11) transfers the aluminum foil still clamped on the fixture (12) from the pulse region (112) to the discharging area (113) of the conveyor line (11). The discharging mechanism (4) of the lithium-ion battery positive electrode sheet continuous recycling device takes out the aluminum foil in the fixture (12) in the discharging area (113).

12. The continuous recovery method of the lithium-ion battery positive electrode sheet according to claim 11, wherein, The separating the aluminum foil of the positive electrode sheet from the active material layer includes: The pulse area (112) is arranged below the liquid level of the reaction liquid in the reaction tank (6) of the continuous recovery device for the positive electrode sheet of the lithium-ion battery. Driven by the conveyor line (11), the active material layer after the pulsed reaction of the positive electrode sheet is impacted by the reaction liquid and falls off.

13. The continuous recovery method for the positive electrode sheet of a lithium-ion battery according to claim 12 further includes: The pulse member (32) is slidably arranged on the side wall of the reaction tank (6). One end of the linkage member is hinged to the end face of the driven roller (116) on the conveyor line (11), and the hinge point between the linkage member and the driven roller (116) is arranged at an interval from the rotation axis of the driven roller (116). The other end of the linkage member is hinged to the pulse member (32). The conveyor line (11) drives the driven roller (116) to rotate, so that the linkage member synchronously drives the pulse member (32) to contact or be spaced from the positive electrode sheet. Wherein, the driven roller (116) is rotatably arranged in the pulse area (112), and the linkage member is the first driving member (31).

14. The continuous recycling method of the lithium ion battery positive electrode sheet according to claim 11, wherein, The feeding mechanism (2) feeds the positive electrode sheets one by one onto the fixture (12) in the feeding area (111), including: In the feeding area (111), the feeding component (21) of the feeding mechanism (2) places the positive electrode sheet between the clamping plate (123) and the mounting seat (121) of the fixture (12). The conveyor line (11) transfers the fixture (12) loaded with the positive electrode sheet in the feeding area (111) to the locking area (114) on the conveyor line (11). The locking component (22) of the feeding mechanism (2) presses the clamping plate (123) so that the hook (124) of the clamping plate (123) is clamped with the elastic pressing lock (5) on the mounting seat (121), and the positive electrode sheet is clamped between the clamping plate (123) and the mounting seat (121).

15. The method for continuously recycling a positive electrode sheet of a lithium-ion battery according to claim 14, wherein, The conveyor line (11) transfers the aluminum foil still clamped on the fixture (12) from the pulse area (112) to the discharging area (113) of the conveyor line (11). The discharging mechanism (4) takes out the aluminum foil in the fixture (12) in the discharging area (113), including: The conveyor line (11) transfers the aluminum foil still clamped on the fixture (12) from the pulse area (112) to the unlocking area (115) on the conveyor line (11). The unlocking component (41) of the discharging mechanism (4) presses the clamping plate (123) so that the hook (124) is separated from the elastic pressing lock (5), and the first elastic member (122) between the clamping plate (123) and the mounting seat (121) drives the clamping plate (123) away from the mounting seat (121), and the aluminum foil is disengaged from the clamping between the clamping plate (123) and the mounting seat (121). The conveyor line (11) transfers the fixture (12) loaded with the aluminum foil in the unlocking area (114) to the blanking area (113), and the blanking component (42) of the blanking mechanism (4) takes out the aluminum foil.

Images