DRT-based high-voltage pulse separation and recovery device and processing method for positive electrode sheets

Abstract

This application discloses a high-voltage pulse separation and recovery device and method for positive electrode sheets based on DRT. The high-voltage pulse separation and recovery device for positive electrode sheets based on DRT is provided with a storage area, a feeding area, a processing area and a recovery area in sequence. The feeding area is provided with a first conveying mechanism, and a feeding mechanism is provided between the storage area and the feeding area. The feeding mechanism can place the positive electrode sheets in the storage area onto the first conveying mechanism. The processing area is provided with a reaction box with a top opening filled with solution. A base is provided inside the reaction box, and part of the base is located outside the reaction box through the opening. The first conveying mechanism can transport the positive electrode sheets onto the base, thereby realizing automatic feeding. A pressure plate and an energizing part are provided above the reaction box. When the pressure plate descends, the energizing part can abut against the positive electrode sheet and press the base into the solution to apply a pulse current to the current collector in the solution, so that the positive electrode material is dispersed in the solution. A second conveying mechanism is provided on the base, and the second conveying mechanism can transport the current collector to the recovery area, thereby realizing the separation and recovery of the positive electrode sheets.

Description

Technical Field

[0001] This application relates to the field of battery positive electrode recycling technology, for example to a high-voltage pulse separation and recycling device and method based on DRT for positive electrode recycling. Background Technology

[0002] With the development of new energy technologies, the demand for batteries has surged. However, due to the short lifespan of batteries, the number of discarded batteries has also increased dramatically. Directly discarding discarded batteries pollutes the environment. At the same time, the metals such as nickel, cobalt, manganese, lithium, iron, copper, and aluminum in discarded batteries have high recycling value, so discarded batteries are recycled.

[0003] In related technologies, the recycling and processing of positive electrode sheets from waste batteries generally involves using a pulse discharge treatment device to perform pulse discharge treatment on the positive electrode sheets, thereby separating the current collector from the positive electrode material. However, current pulse discharge treatment devices mainly rely on manual feeding, making it impossible to continuously and automatically separate and recycle the positive electrode sheets, resulting in low production efficiency. Summary of the Invention

[0004] This application provides a high-voltage pulse separation and recycling device and method for positive electrode sheets based on DRT, which can realize continuous automatic separation and recycling of positive electrode sheets with high automation and high efficiency.

[0005] In a first aspect, a high-voltage pulse separation and recovery device for positive electrode sheets based on DRT is provided, which sequentially comprises a storage area, a feeding area, a processing area, and a recovery area. The storage area is configured to store positive electrode sheets to be processed. The feeding area is equipped with a first conveying mechanism, and a feeding mechanism is provided between the storage area and the feeding area. The feeding mechanism is configured to place the positive electrode sheets onto the first conveying mechanism. The processing area is equipped with a reaction chamber with a top opening. A liftable base is provided inside the reaction chamber, and part of the base extends through the opening and is located outside the reaction chamber. The first conveying mechanism is capable of... The positive electrode sheet is conveyed onto the base; the reaction chamber is filled with a solution, and a pulse discharge module is provided above the reaction chamber. The pulse discharge module includes a liftable pressure plate and an energized part mounted on the pressure plate. When the pressure plate descends, the energized part abuts against the positive electrode sheet and presses the base into the solution to apply a pulse current to the positive electrode sheet in the solution, thereby dispersing the positive electrode material separated from the positive electrode sheet in the solution. A second conveying mechanism is provided on the base, which is configured to convey the current collector of the separated positive electrode sheet to the recovery area.

[0006] As an alternative solution for a high-voltage pulse separation and recovery device based on DRT, the feeding area is provided with a material tray, the material tray is provided with a positioning groove for placing the positive electrode sheet, and the base is provided with a positioning structure, the positioning structure being configured to align the positioning groove with the energized part.

[0007] As an optional solution for a high-voltage pulse separation and recovery device based on DRT, the positioning structure includes positioning elements and guide rollers. The top surface of the base is provided with an installation groove at the front end along the conveying direction of the first conveying mechanism. The positioning elements can be raised and lowered in the installation groove. When the material tray is conveyed to the base, at least part of the positioning elements can rise outside the installation groove and restrict the movement of the material tray. The top surface of the base is provided with two rows of guide rollers at intervals along the conveying direction perpendicular to the first conveying mechanism. The two rows of guide rollers are configured to roll against two sides of the material tray perpendicular to its own moving direction.

[0008] As an alternative solution for a high-voltage pulse separation and recovery device based on DRT, the bottom of the positioning tank is set as a grid structure, and the solution can penetrate through the grid structure into the positioning tank.

[0009] As an alternative solution for a high-voltage pulse separation and recovery device based on DRT, the base is connected to the bottom wall of the reaction chamber via retractable legs, and an elastic element is sleeved on the outside of the legs. The elastic element is disposed between the base and the bottom wall of the reaction chamber, and the elastic element can drive the base to return to its original position after the pressure decreases.

[0010] As an alternative solution for a high-voltage pulse separation and recovery device for positive electrode sheets based on DRT, the recovery area is provided with a recovery box with an open top, and a rotating seat is provided above the recovery box. The second conveying mechanism conveys the material tray to the rotating seat. The rotating seat is provided with a fixing mechanism, which is configured to restrict the material tray on the rotating seat. The rotating seat is connected to a flipping mechanism, which can drive the rotating seat to flip so as to pour the current collector of the positive electrode sheet into the recovery box.

[0011] As an alternative solution for a high-voltage pulse separation and recovery device based on DRT, a third conveying mechanism is provided on the rotating base. The third conveying mechanism is connected to the first conveying mechanism and can convey the material tray to the second conveying mechanism.

[0012] As an alternative solution for a high-voltage pulse separation and recovery device based on DRT, the fixing mechanism includes a clamping plate and a driving member. The clamping plate is disposed on the inner side wall of the rotating seat and spaced apart from the inner bottom wall of the rotating seat. A space for accommodating the material tray is formed between the clamping plate and the rotating seat. The driving member is connected to the clamping plate and can drive the clamping plate to move vertically and press against the material tray.

[0013] As an alternative solution for a high-voltage pulse separation and recovery device based on DRT, a cleaning zone is provided between the processing zone and the recovery zone. The cleaning zone is equipped with a fourth conveying mechanism, which is configured to convey the positive electrode sheet from the processing zone to the recovery zone. A cleaning component and a drying component are provided above the fourth conveying mechanism. The cleaning component includes a first nozzle for spraying cleaning fluid, and the drying component includes a second nozzle for blowing air. The first nozzle and the second nozzle are arranged sequentially along the conveying direction of the fourth conveying mechanism and face the fourth conveying mechanism.

[0014] As an alternative solution for a high-voltage pulse separation and recovery device for positive electrode sheets based on DRT, a transition zone is provided between the cleaning zone and the processing zone. The transition zone is equipped with a first water collection tank, which is connected to the reaction tank via a pipe. A fifth conveying mechanism is provided above the first water collection tank. The fifth conveying mechanism is configured to convey the material tray from the processing zone to the cleaning zone. The fifth conveying mechanism is equipped with a drain section, through which the solution attached to the positive electrode sheet can drip into the first water collection tank.

[0015] As an optional solution for a high-voltage pulse separation and recovery device based on DRT, the feeding mechanism includes a suction cup assembly, a first moving assembly, and a second moving assembly. The first moving assembly is connected to the suction cup assembly to drive the suction cup assembly to move up and down. The second moving assembly is connected to the first moving assembly to drive the first moving assembly to move back and forth between the storage area and the feeding area.

[0016] Secondly, a method for separating and recovering positive electrode sheets using high-voltage pulse separation is provided. This method utilizes the aforementioned DRT-based high-voltage pulse separation and recovery device for positive electrode sheets to separate and recover the positive electrode sheets. The method includes the following steps:

[0017] Step S100: The feeding mechanism transfers the positive electrode sheet to be processed in the storage area to the first conveying mechanism in the feeding area, and then the first conveying mechanism conveys the positive electrode sheet to the base in the processing area.

[0018] Step S200: After the positive electrode is delivered to the base, the pressure plate of the pulse discharge module descends so that the energized part abuts against the positive electrode and presses the positive electrode and the base together into the solution in the reaction tank.

[0019] Step S300: After the positive electrode is completely immersed in the solution, the energized part is energized to apply a pulse current to the positive electrode, so as to separate the positive electrode material of the positive electrode from the current collector.

[0020] Step S400: After separation, the pressure plate rises and moves away from the base, causing the base to rise and reset. The second conveying mechanism then conveys the current collector to the recycling area for recycling.

[0021] As an alternative method for high-voltage pulse separation and recovery of positive electrode sheets, in step S400, the current collector is cleaned and dried during the process of the current collector moving from the processing area to the recovery area.

[0022] As an alternative method for high-voltage pulse separation and recovery of positive electrode sheets, a material tray is conveyed on the first conveying mechanism, and a positioning structure is provided on the base;

[0023] In step S100, the feeding mechanism positions the positive electrode sheet on the material tray, and the first conveying mechanism conveys the material tray and the positive electrode sheet together to the base;

[0024] In step S200, during the process of the material tray being conveyed to the base, the positioning structure blocks and positions the material tray, so that the positive electrode plate on the material tray is aligned with the energized part.

[0025] As an alternative method for high-voltage pulse separation and recovery of positive electrode sheets, the recovery area is provided with a recovery box with an open top, and a rotating seat is provided above the recovery box. The rotating seat is provided with a fixing mechanism and a third conveying mechanism connected to the first conveying mechanism.

[0026] In step S400, the second conveying mechanism conveys the tray to the rotating seat, and then the fixing mechanism abuts against the tray to restrict the tray on the rotating seat;

[0027] The rotating seat is flipped over, and the current collector on the material tray is poured into the recycling box for recycling. Then the rotating seat is flipped back to its original position, the fixing mechanism moves away from the material tray, and the third conveying mechanism conveys the material tray to the first conveying mechanism for recycling.

[0028] The beneficial effects of this application are as follows: By setting up a feeding mechanism and a first conveying mechanism, the two work together to achieve automatic feeding of the positive electrode sheet; after feeding, the pressure plate can be lowered so that the energized part abuts against the current collector of the positive electrode sheet, and the base and the positive electrode sheet are pressed together into the solution in the reaction tank. Then, the energized part is energized to apply a high-voltage pulse current to the current collector, causing the positive electrode material to vaporize, thereby separating the current collector and the positive electrode material. Since the positive electrode sheet is immersed in the solution for pulse discharge treatment, the vaporized small particles of positive electrode material can be dispersed in the solution and are difficult to enter the air, thus avoiding the vaporized small particles of positive electrode material from drifting away with the air, which helps to improve the recovery rate of the positive electrode material; after the positive electrode material is separated, the pressure plate rises and resets, so that the base can rise and reset to lift the current collector out of the solution. The second conveying mechanism can transport the current collector to the recovery area for recycling, thereby realizing the separation and recovery of the current collector and the positive electrode material of the positive electrode sheet. Compared with related technologies, the high-voltage pulse separation and recycling device based on DRT of this application can continuously and automatically feed and pulse discharge the positive electrode sheet, with a high degree of automation, and can realize continuous automatic separation and recycling of the positive electrode sheet with high efficiency. Attached Figure Description

[0029] The present application will now be described with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a schematic diagram of the structure of the high-voltage pulse separation and recovery positive electrode device based on DRT described in the embodiments of this application;

[0031] Figure 2 This is a perspective view of a high-voltage pulse separation and recovery device based on DRT according to this application;

[0032] Figure 3 This is a perspective view of the material tray in an embodiment of this application;

[0033] Figure 4 This is a perspective view of the base according to an embodiment of this application;

[0034] Figure 5 This is an assembly diagram of the rotating seat, flipping mechanism, and positioning mechanism according to one embodiment of this application.

[0035] In the picture:

[0036] 100. Storage area; 200. Feeding area; 300. Processing area; 400. Recycling area; 500. Cleaning area; 600. Transition area; 700. Positive electrode sheet;

[0037] 1. Material tray; 101. Positioning groove; 102. Grid structure; 2. First conveying mechanism; 3. Feeding mechanism; 301. Suction cup assembly; 302. First moving assembly; 303. Second moving assembly; 4. Reaction chamber; 5. Base; 6. Pulse discharge module; 601. Pressure plate; 602. Power supply part; 7. Second conveying mechanism; 8. Positioning structure; 801. Positioning component; 802. Guide roller; 9. Support leg; 10. Elastic component; 11. Recycling box; 12. Rotating seat; 121, Second rotating shaft; 13, Fixing mechanism; 131, Clamping plate; 132, Driving component; 14, Tilting mechanism; 141, Drive motor; 142, Drive gear; 143, First rotating shaft; 144, Gear; 145, Synchronous belt; 15, Third conveying mechanism; 16, Fourth conveying mechanism; 17, First nozzle; 18, Second nozzle; 19, First water collection tank; 20, Fifth conveying mechanism; 21, Second water collection tank; 22, Storage platform. Detailed Implementation

[0038] The embodiments of this application will now be described with reference to the accompanying drawings. These described embodiments are merely some, not all, of the embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application according to the circumstances.

[0040] Directional Recycling Technology (DRT) is a technology based on reverse product positioning design. Through short-range recycling processes, it recycles failed materials from retired products back into usable materials for future product manufacturing. In the field of power batteries, directional recycling refers to the process of restoring used batteries through pretreatment and hydrometallurgical processes to produce materials needed for manufacturing power batteries. Manufacturers can directly use the processed battery raw materials to create high-quality power batteries.

[0041] Currently, the positive electrode material and current collector of a positive electrode sheet can be separated and recycled through pulse discharge processing. The pulse discharge process is as follows: a high-voltage pulse current is applied to the current collector, which can instantly generate a large amount of heat in the current collector, causing the positive electrode material on the current collector to vaporize. At the same time, breakdown occurs and plasma is formed, which causes the positive electrode material to form small particles and detach from the current collector. Both the small particles of positive electrode material and the current collector can be recycled and reused.

[0042] Reference Figure 1 and Figure 2 This application provides a high-voltage pulse separation and recovery device for positive electrode sheets based on DRT, which is provided with a storage area 100, a feeding area 200, a processing area 300 and a recovery area 400 in sequence.

[0043] Storage area 100 is equipped with storage platform 22, which is configured to store positive electrode sheets 700 to be processed. Loading area 200 is equipped with a first conveying mechanism 2. A loading mechanism 3 is located between storage area 100 and loading area 200, capable of placing the positive electrode sheets 700 onto the first conveying mechanism 2. Processing area 300 is equipped with a reaction chamber 4 with a top opening, filled with a solution. A liftable base 5 is located inside the reaction chamber 4, with a portion of the base 5 extending through the opening and outside the reaction chamber 4. The first conveying mechanism 2 can transport the positive electrode sheets 700. The reaction chamber 4 is mounted on the base 5. A pulse discharge module 6 is provided above the reaction chamber 4. The pulse discharge module 6 includes a liftable pressure plate 601 and an energized part 602 mounted on the pressure plate 601. When the pressure plate 601 is lowered, the energized part 602 can abut against the positive electrode 700 and press the base 5 into the solution to apply a pulse current to the positive electrode 700 in the solution, so that the positive electrode material separated from the positive electrode 700 is dispersed in the solution. A second conveying mechanism 7 is provided on the base 5. The second conveying mechanism 7 is configured to convey the current collector of the separated positive electrode 700 to the recovery area 400.

[0044] Understandably, by setting up the feeding mechanism 3 and the first conveying mechanism 2, the two work together to achieve automatic feeding of the positive electrode sheet 700. After feeding, the pressure plate 601 can be lowered so that the energized part 602 abuts against the current collector of the positive electrode sheet 700, and the base 5 and the positive electrode sheet 700 are pressed together into the solution in the reaction tank 4. Then, the energized part 602 is energized, which can apply a high-voltage pulse current to the current collector to vaporize the positive electrode material, thereby separating the current collector and the positive electrode material. Since the positive electrode sheet 700 is immersed in the solution for pulse discharge, The vaporized small particles of positive electrode material disperse in the solution, making it difficult for them to enter the air. The solution is used to collect the vaporized positive electrode material, preventing it from drifting away with the air and improving the recovery rate. After separation, the pressure plate 601 rises and resets, allowing the base 5 to rise and reset, lifting the current collector out of the solution. The second conveying mechanism 7 transports the current collector to the recovery zone 400 for recycling, thus achieving the separation and recovery of the current collector and positive electrode material of the positive electrode sheet 700. This design enables continuous automatic feeding and pulse discharge processing of the positive electrode sheet 700, with a high degree of automation. Therefore, the high-voltage pulse separation and recovery positive electrode sheet device based on DRT of this application can continuously and automatically separate and recover the positive electrode sheet 700 with high efficiency.

[0045] Optionally, the solution can be a coolant (e.g., water), which can be used to collect the vaporized cathode material and to rapidly cool the vaporized cathode material.

[0046] In some embodiments, the DRT-based high-voltage pulse separation and recovery device for positive electrode sheets further includes a controller, with the feeding mechanism 3, the first conveying mechanism 2, and the second conveying mechanism 7 respectively connected to the controller. The controller can control the feeding mechanism 3, the first conveying mechanism 2, and the second conveying mechanism 7 to work together, making the entire processing flow smoother.

[0047] Optional, refer to Figure 1 and Figure 2The feeding mechanism 3 includes a suction cup assembly 301, a first moving assembly 302, and a second moving assembly 303. The first moving assembly 302 is connected to the suction cup assembly 301 to drive the suction cup assembly 301 to move up and down. The second moving assembly 303 is connected to the first moving assembly 302 to drive the first moving assembly 302 to reciprocate between the storage area 100 and the feeding area 200. For example, the suction cup assembly 301 can be an electric suction cup structure, the first moving assembly 302 can be an electric slide rail mechanism, and the second moving assembly 303 can be a lifting cylinder. The lifting cylinder is slidably mounted on the electric slide rail mechanism, and its output end is connected to the suction cup assembly 301. The electric slide rail mechanism can drive the lifting cylinder and the suction cup assembly 301 to reciprocate between the storage area 100 and the feeding area 200 together. The lifting cylinder can drive the suction cup assembly 301 to move up and down to automatically tighten or loosen the positive electrode sheet 700, thereby realizing automatic feeding of the positive electrode sheet 700.

[0048] In this embodiment, refer to Figures 1 to 4 The feeding area 200 is provided with a material tray 1, and the material tray 1 is provided with a positioning groove 101. The feeding mechanism 3 can place the positive electrode 700 of the storage area 100 into the positioning groove 101. The positioning groove 101 restricts the movement of the positive electrode 700 relative to the material tray 1, so as to position the positive electrode 700 on the material tray 1. After the positive electrode 700 is placed on the material tray 1, the first conveying mechanism 2 conveys the material tray 1 and the positive electrode 700 together to the base 5. The base 5 is provided with a positioning structure 8, which can prevent the positioning material tray 1 from moving, so as to align the positioning groove 101 with the power supply part 602. The pressure plate 601 descends to abut against the material tray 1 and presses the material tray 1 and the base 5 into the solution. At the same time, it ensures that the energizing part 602 accurately abuts against the positive electrode 700 in the positioning groove 101, preventing the positive electrode 700 from floating in the solution and ensuring that the energizing part 602 can apply a pulse current to the positive electrode 700.

[0049] Optional, such as Figure 3 As shown, the tray 1 has multiple parallel positioning slots 101, each of which can hold a positive electrode 700. The pressure plate 601 has multiple sets of energizing parts 602, each capable of applying a pulse current to the positive electrode 700 in a positioning slot 101. This design allows for the simultaneous separation and recycling of multiple positive electrode 700s, resulting in higher processing efficiency.

[0050] In some embodiments, such as Figure 3 As shown, the bottom of the positioning groove 101 is set as a grid structure 102. The grid structure 102 can support the positive electrode 700. At the same time, during the pulse discharge process, the solution can penetrate through the grid structure 102 and seep into the positioning groove 101 to ensure that the solution is in full contact with the positive electrode 700.

[0051] Optional, such as Figure 4 As shown, the positioning mechanism includes a positioning element 801 and guide rollers 802. A mounting groove is provided at the front end of the top surface of the base 5 along the conveying direction of the first conveying mechanism 2. The positioning element 801 can be raised and lowered within the mounting groove to selectively extend outside the mounting groove and restrict the movement of the tray 1. For example, a drive mechanism (e.g., a lifting cylinder or motor) is provided within the mounting groove. The drive mechanism is connected to a controller and can drive the positioning element 801 to move up and down, giving the positioning element 801 a raised position and a lowered position. When the positioning element 801 is in the raised position, at least part of it is outside the mounting groove; when the positioning element 801 is in the lowered position, it is completely retracted into the mounting groove. Two rows of guide rollers 802 are spaced apart on the top surface of the base 5 along the conveying direction perpendicular to the first conveying mechanism 2. Each row of guide rollers 802 includes at least one guide roller 802, and the length of each row of guide rollers 802 extends along the conveying direction of the second conveying mechanism 7.

[0052] Understandably, the positioning element 801 and the two rows of guide rollers 802 surround the base 5 and form a positioning space to accommodate the tray 1. The positioning space is aligned with the pressure plate 601. The rear end of the positioning space along the conveying direction of the first conveying mechanism 2 forms an opening for the tray 1 to enter. The tray 1 can pass through the opening and enter the positioning space. During the process of the first conveying mechanism 2 conveying the tray 1 to the positioning space on the base 5, the two rows of guide rollers 802 can roll against the two opposite sides of the tray 1 perpendicular to its own moving direction to limit the moving direction of the tray 1 and prevent the tray 1 from deviating. At the same time, the positioning element 801 is in the rising position. After the tray 1 moves into place, the positioning element 801 can block the tray 1 from moving further, and precisely position the tray 1 in the positioning space, so that the pressure plate 601 is aligned with the tray 1 and the energized part 602 is aligned with the positioning groove 101, thereby ensuring that the energized part 602 is precisely aligned with the positive electrode 700 in the positioning groove 101. After the positive electrode 700 completes the pulse discharge process, before the second conveying mechanism 7 conveys the material tray 1, the positioning member 801 is in the descending position to avoid interfering with the conveying of the material tray 1.

[0053] Optional, refer to Figure 1 The base 5 is connected to the inner bottom wall of the reaction chamber 4 via retractable support legs 9, and an elastic element 10 is sleeved on the outer side of the support legs 9. The elastic element 10 is located between the base 5 and the inner bottom wall of the reaction chamber 4, and can drive the base 5 to return to its original position after the pressure decreases. During pulse discharge treatment, the pressure plate 601 descends to abut against the material tray 1 and overcomes the elastic force of the elastic element 10 to drive the material tray 1 and the base 5 to descend and be immersed in the solution. After the pulse discharge treatment is completed, the pressure plate 601 moves away from the material tray 1 and the base 5 and rises to return to its original position to release the pressure on the base 5. The base 5 can automatically rise to its original position under the action of the elastic element 10.

[0054] For example, the elastic element 10 can be a spring.

[0055] In some embodiments, a hydraulic damper is also provided inside the outrigger 9. The hydraulic damper can use hydraulic damping to buffer and slow down the extension and retraction movement of the outrigger to a stop, playing a certain degree of protection, so that the base 5 can rise smoothly and prevent the material tray 1 from falling off the base 5 due to inertia, thus avoiding safety accidents or damage to the device.

[0056] Optional, refer to Figure 1 The pressure plate 601 is connected to a lifting mechanism, which can be a lifting cylinder, to drive the pressure plate 601 to move upward. For example, the pressure plate 601 integrates a power supply circuit board, and the pulse discharge mechanism also includes a pulse discharge body. The pulse discharge body is disposed on the side of the pressure plate 601 opposite to the energized part 602. The power supply circuit board is connected to the pulse discharge body to provide power to it. The energized part 602 is connected to the pulse discharge body and includes a positive energized part 602 and a negative energized part 602. The positive and negative energized parts 602 can simultaneously abut against the current collector of the positive electrode 700 to form an electrical circuit, allowing the pulse current to flow through the current collector.

[0057] In this embodiment, refer to Figure 1 and Figure 5 The recycling area 400 is equipped with a recycling box 11 with an open top. A rotating seat 12 is provided above the recycling box 11. The second conveying mechanism 7 can convey the material tray 1 to the rotating seat 12. A fixing mechanism 13 is provided on the rotating seat 12. When the material tray 1 is conveyed to the rotating seat 12, the fixing mechanism 13 can restrict the material tray 1 on the rotating seat 12 to prevent the material tray 1 from moving relative to the rotating seat 12. The rotating seat 12 is connected to a flipping mechanism 14. The flipping mechanism 14 can drive the rotating seat 12 to flip so that the current collector of the positive electrode 700 is poured into the recycling box 11, thereby realizing automatic collection of the current collector.

[0058] For example, refer to Figure 5The recycling area 400 is equipped with a support frame, and the recycling box 11 is located on the top surface of the support frame. The flipping mechanism 14 includes a drive motor 141, which is connected to a controller. The output end of the drive motor 141 is equipped with a drive gear 142. The support frame has two opposing side plates, and each side plate is rotatably equipped with a first rotating shaft 143. Part of the first rotating shaft 143 is located inside the support frame and is equipped with teeth 144 that mesh with the drive gear 142. Part of the first rotating shaft 143 is located outside the support frame. The rotating seat 12 is a "U" shaped mechanism. The two opposite outer sides of the rotating seat 12 are rotatably connected to an external fixed platform through a second rotating shaft 121. A synchronous belt 145 is connected between the first rotating shaft 143 and the second rotating shaft 121. The controller can control the drive motor 141 to drive the drive gear 142 to rotate, and drive the first rotating shaft 143 to rotate, thereby driving the second rotating shaft 121 to rotate in conjunction with the synchronous belt 145, thereby realizing the automatic flipping of the rotating seat 12.

[0059] Of course, in other embodiments, the drive motor 141 can be fixedly mounted on an external fixed platform, and the output end of the drive motor 141 is connected to the outer side of the rotating seat 12 to directly drive rotation and flipping.

[0060] Optional, refer to Figure 5 The fixing mechanism 13 includes a clamping plate 131 and a driving member 132. The clamping plate 131 is disposed on the inner side wall of the rotating seat 12 and spaced apart from the inner bottom wall of the rotating seat 12. A space for accommodating the material tray 1 is formed between the clamping plate 131 and the rotating seat 12. The material tray 1 can be conveyed into the space. The driving member 132 is connected to the clamping plate 131, and the controller is connected to the driving member 132. The controller can control the driving member 132 to drive the clamping plate 131 to move in the vertical direction so as to selectively press the material tray 1 against the rotating seat 12.

[0061] For example, refer to Figure 2 and Figure 5 The rotating seat 12 is provided with a third conveying mechanism 15, which is connected to the second conveying mechanism 7. After the collecting fluid on the material tray 1 is poured into the recycling box 11, the flipping mechanism 14 can drive the rotating seat to reset, and then the clamping plate 131 rises away from the material tray 1. The third conveying mechanism 15 can transport the empty material tray 1 back to the second conveying mechanism 7 for recycling of the material tray 1.

[0062] Optional, refer to Figure 1 and Figure 2A cleaning zone 500 is provided between the processing zone 300 and the recovery zone 400. The cleaning zone 500 is equipped with a fourth conveying mechanism 16, which is configured to convey the positive electrode sheet 700 from the processing zone 300 to the recovery zone 400. A mounting base is provided above the fourth conveying mechanism 16, and a cleaning assembly and a drying assembly are mounted on the mounting base. The cleaning assembly includes a first nozzle 17 for spraying cleaning fluid (e.g., water), and the drying assembly includes a drying body and a second nozzle 18 for blowing air. The first nozzle 17 and the second nozzle 18 are arranged sequentially along the conveying direction of the fourth conveying mechanism 16 and are directly opposite the fourth conveying mechanism 16. By providing the cleaning assembly, the first nozzle 17 can spray cleaning fluid during the conveying process of the material tray 1 to rinse the solution and positive electrode material adhering to the material tray 1 and the current collector, which helps to improve the separation effect. Furthermore, by providing the drying assembly, the second nozzle 18 can be used to dry the cleaned material tray 1 and the current collector, ensuring that the current collector is recovered dry.

[0063] In some embodiments, the length of the fourth conveying mechanism 16 may be designed to be long enough to ensure both cleaning and drying effects.

[0064] It should be noted that the cleaning component can adopt an existing cleaning structure. For example, the cleaning component also includes a water pump and a pipe. The first end of the pipe is connected to the tank storing the cleaning liquid, and the second end of the pipe is connected to the water pump and the first nozzle 17 in sequence. The first nozzle 17 can clean the liquid through the water pump. The drying body can adopt an existing fan structure. The mounting base is provided with an air duct that connects to the fan and the second nozzle 18. The fan can blow air out from the second nozzle 18.

[0065] In some embodiments, the cleaning fluid and the solution are not the same liquid, and the cleaning fluid cannot be directly recycled back into reaction tank 4. (Refer to...) Figure 1 Optionally, a transition zone 600 is provided between the cleaning zone 500 and the processing zone 300. The transition zone 600 is equipped with a first water collection tank 19, which is connected to the reaction tank 4 through a pipe. A fifth conveying mechanism 20 is provided above the first water collection tank 19. The fifth conveying mechanism 20 is configured to convey the material tray 1 from the processing zone 300 to the cleaning zone 500. The fifth conveying mechanism 20 is provided with a perforated drain section, so that the solution attached to the material tray 1 and the positive electrode 700 can drip into the first water collection tank 19 through the drain section, so as to recover the solution attached to the positive electrode 700 and the positive electrode material in the solution into the reaction tank 4, which helps to improve the recovery rate of the positive electrode material.

[0066] In other embodiments, reference continues. Figure 1The solution and cleaning fluid can be the same liquid (e.g., water). A second water collection tank 21 is provided below the fourth conveying mechanism 16. The second water collection tank 21 is connected to the reaction tank 4 through a pipeline. The fourth conveying mechanism 16 is provided with a hollow part. During cleaning, the cleaning fluid can drip from the hollow part into the second water collection tank 21 and be recovered into the reaction tank 4, so as to recover the positive electrode material in the cleaning fluid into the reaction tank 4, which helps to improve the recovery rate of the positive electrode material.

[0067] Reference Figure 2 For example, the first conveying mechanism 2, the second conveying mechanism 7, the fifth conveying mechanism 20, the fourth conveying mechanism 16, and the third conveying mechanism 15 can all be roller conveyors of related technologies. In some embodiments, there is a gap between two adjacent rollers on the roller conveyor, and the gap on the fifth conveying mechanism 20 is formed as a drain portion, while the gap on the fourth conveying mechanism 16 is formed as a hollow portion.

[0068] Continue to refer to Figure 2 Optionally, the first conveying mechanism 2, the second conveying mechanism 7, the fifth conveying mechanism 20, the fourth conveying mechanism 16, and the third conveying mechanism 15 are connected end-to-end in sequence to facilitate continuous and smooth conveying of the material tray 1. It should be noted that "end-to-end" here refers to the alignment of two adjacent conveying mechanisms with a certain distance between them, rather than a fixed connection. Therefore, the second conveying mechanism 7 can move up and down with the base 5, and the third conveying mechanism 15 can rotate with the rotating seat 12.

[0069] This application also provides a method for high-voltage pulse separation and recovery of positive electrode sheets. The positive electrode sheet 700 is continuously and automatically separated and recovered using the high-voltage pulse separation and recovery device based on DRT according to any of the above embodiments, thereby improving the separation and recovery efficiency of the positive electrode sheet 700. The method for high-voltage pulse separation and recovery of positive electrode sheets includes the following steps:

[0070] In step S100, the feeding mechanism 3 transfers the positive electrode sheet 700 to be processed in the storage area 100 to the first conveying mechanism 2 in the feeding area 200, and then the first conveying mechanism 2 conveys the positive electrode sheet 700 to the base 5 in the processing area 300 to achieve continuous automatic feeding.

[0071] In step S200, after the positive electrode 700 is delivered to the base 5, the pressure plate 601 of the pulse discharge module 6 descends so that the energized part 602 abuts against the positive electrode 700, and presses the positive electrode 700 and the base 5 together into the solution in the reaction tank 4.

[0072] In step S300, after the positive electrode plate 700 is completely immersed in the solution, the energizing unit 602 is energized to apply a pulse current to the current collector of the positive electrode plate 700, so that the positive electrode material of the positive electrode plate 700 is separated from the current collector; the positive electrode material is dispersed in the solution after separation for easy recovery.

[0073] In step S400, after separation, the pressure plate 601 rises and moves away from the base 5, causing the base 5 to rise and reset, so as to remove the collector. The second conveying mechanism 7 conveys the collector to the recycling area 400 for recycling.

[0074] In the above method, continuous automatic feeding is achieved through the coordinated cooperation of the feeding mechanism 3 and the first conveying mechanism 2, which enables continuous automatic separation and recycling of the positive electrode sheet 700.

[0075] Please combine Figure 1 and Figure 2 The high-voltage pulse separation and recovery device for positive electrode plates based on DRT as described in the aforementioned technical solution further includes a cleaning zone 500, which is equipped with a cleaning component and a drying component.

[0076] Correspondingly, in step S400, during the process of the current collector moving from the processing zone 300 to the recovery zone 400, the current collector is cleaned using a cleaning component and dried using a drying component, so as to wash away the solution attached to the current collector and the positive electrode material in the solution and then dry it, so as to improve the separation effect of the positive electrode material and the current collector.

[0077] Please combine Figure 1 and Figure 2 In the aforementioned technical solution, the high-voltage pulse separation and recovery positive electrode device based on DRT has a material tray 1 conveyed on the first conveying mechanism 2 and a positioning structure 8 provided on the base 5.

[0078] Correspondingly, in step S100, the feeding mechanism 3 positions the positive electrode 700 on the material tray 1 to position the positive electrode 700 on the material tray 1, and the first conveying mechanism 2 conveys the material tray 1 and the positive electrode 700 together to the base 5.

[0079] In step S200, during the process of conveying the material tray 1 to the base 5, the positioning structure 8 blocks and positions the material tray 1, so that the positive electrode 700 on the material tray 1 is aligned with the energized part 602, ensuring that the energized part 602 can be accurately connected to the positive electrode 700.

[0080] Optional, please refer to Figure 1 and Figure 5 As shown, in the high-voltage pulse separation and recovery device based on DRT in the aforementioned technical solution, the recovery area 400 is provided with a recovery box 11 with an open top, and a rotating seat 12 is provided above the recovery box 11. The rotating seat 12 is provided with a fixing mechanism 13 and a third conveying mechanism 15 connected to the first conveying mechanism 2.

[0081] Correspondingly, in step S400, the second conveying mechanism 7 conveys the tray 1 to the rotating seat 12, and then the fixing mechanism 13 presses against the tray 1 to restrict the tray 1 on the rotating seat 12 and prevent the tray 1 from moving relative to the rotating seat 12.

[0082] The rotating seat 12 is flipped over to pour the current collector on the material tray 1 into the recycling box 11 for recycling. Then the rotating seat 12 is flipped back to its original position, the fixing mechanism 13 moves away from the material tray 1, and the third conveying mechanism 15 conveys the material tray 1 to the first conveying mechanism 2 for recycling.

[0083] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0084] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0085] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation, characterized in that, It is provided with a storage area (100), a feeding area (200), a processing area (300) and a recycling area (400) in sequence; The storage area (100) is configured to store the positive electrode sheet (700) to be processed. The loading area (200) is provided with a first conveying mechanism (2). A loading mechanism (3) is provided between the storage area (100) and the loading area (200). The loading mechanism (3) is configured to place the positive electrode sheet (700) on the first conveying mechanism (2). The processing area (300) is provided with a reaction box (4) with a top opening. A liftable base (5) is provided inside the reaction box (4), and at least part of the base (5) can pass through the opening and be located outside the reaction box (4). The first conveying mechanism (2) can transport the positive electrode sheet (700) to the base (5). The reaction chamber (4) is filled with a solution. A pulse discharge module (6) is provided above the reaction chamber (4). The pulse discharge module (6) includes a liftable pressure plate (601) and an energized part (602) installed on the pressure plate (601). When the pressure plate (601) is lowered, the energized part (602) can abut against the positive electrode (700) and press the base (5) into the solution to apply a pulse current to the positive electrode (700) in the solution, so that the positive electrode material separated from the positive electrode (700) is dispersed in the solution. The base (5) is provided with a second conveying mechanism (7), which is configured to convey the current collector of the separated positive electrode (700) to the recycling area (400).

2. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to claim 1, characterized in that, The feeding area (200) is provided with a feeding tray (1), the feeding tray (1) is provided with a positioning groove (101) for placing the positive electrode plate (700), the base (5) is provided with a positioning structure (8), the positioning structure (8) is configured to align the positioning groove (101) with the energized part (602).

3. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to claim 2, characterized in that, The positioning structure (8) includes a positioning element (801) and a guide roller (802). The top surface of the base (5) is provided with an installation groove at the front end along the conveying direction of the first conveying mechanism (2). The positioning element (801) can be raised and lowered in the installation groove. When the material tray (1) is conveyed to the base (5), at least part of the positioning element (801) can rise outside the installation groove to restrict the movement of the material tray (1). The top surface of the base (5) is provided with two rows of guide rollers (802) at intervals along the conveying direction perpendicular to the first conveying mechanism (2). The two rows of guide rollers (802) are respectively set to roll against the two sides of the material tray (1) perpendicular to its own moving direction.

4. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to claim 2, characterized in that, The bottom of the positioning groove (101) is set as a grid structure (102), and the solution can penetrate through the grid structure (102) into the positioning groove (101).

5. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to claim 2, characterized in that, The base (5) is connected to the inner bottom wall of the reaction chamber (4) via a retractable support leg (9), and an elastic element (10) is sleeved on the outer side of the support leg (9). The elastic element (10) is disposed between the base (5) and the inner bottom wall of the reaction chamber (4). The elastic element (10) can drive the base (5) to return to its original position after the pressure decreases.

6. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to any one of claims 2 to 5, characterized in that, The recycling area (400) is provided with a recycling box (11) with an open top. A rotating seat (12) is provided above the recycling box (11). The second conveying mechanism (7) conveys the material tray (1) to the rotating seat. A fixing mechanism (13) is provided on the rotating seat (12). The fixing mechanism (13) is configured to restrict the material tray (1) on the rotating seat (12). The rotating seat (12) is connected to a flipping mechanism (14). The flipping mechanism (14) can drive the rotating seat (12) to flip so as to pour the current collector of the positive electrode (700) into the recycling box (11).

7. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to claim 6, characterized in that, The rotating seat (12) is provided with a third conveying mechanism (15), which is connected to the first conveying mechanism (2). The third conveying mechanism (15) can convey the material tray (1) to the second conveying mechanism (7).

8. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to claim 6, characterized in that, The fixing mechanism (13) includes a clamping plate (131) and a driving member (132). The clamping plate (131) is disposed on the inner side wall of the rotating seat (12) and spaced apart from the inner bottom wall of the rotating seat (12). A space for accommodating the tray (1) is formed between the clamping plate (131) and the rotating seat (12). The driving member (132) is connected to the clamping plate (131) and can drive the clamping plate (131) to move vertically and press against the tray (1).

9. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to any one of claims 2 to 5, characterized in that, A cleaning zone (500) is provided between the processing zone (300) and the recycling zone (400). The cleaning zone (500) is provided with a fourth conveying mechanism (16). The fourth conveying mechanism (16) is configured to convey the positive electrode plate (700) from the processing zone (300) to the recycling zone (400). A cleaning assembly and a drying assembly are provided above the fourth conveying mechanism (16). The cleaning assembly includes a first nozzle (17) for spraying cleaning liquid, and the drying assembly includes a second nozzle (18) for blowing air. The first nozzle (17) and the second nozzle (18) are arranged sequentially along the conveying direction of the fourth conveying mechanism (16) and face the fourth conveying mechanism (16).

10. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to claim 9, characterized in that, A transition zone (600) is provided between the cleaning zone (500) and the processing zone (300). The transition zone (600) is provided with a first water collection tank (19). The first water collection tank (19) is connected to the reaction tank (4) through a pipe. A fifth conveying mechanism (20) is provided above the first water collection tank (19). The fifth conveying mechanism (20) is configured to convey the material tray (1) from the processing zone (300) to the cleaning zone (500). The fifth conveying mechanism (20) is provided with a drain section. The solution attached to the positive electrode plate (700) can drip into the first water collection tank (19) through the drain section.

11. The high-voltage pulse separation and recovery device for positive electrode plates based on directional circulation according to any one of claims 1 to 5, characterized in that, The feeding mechanism (3) includes a suction cup assembly (301), a first moving assembly (302), and a second moving assembly (303). The first moving assembly (302) is connected to the suction cup assembly (301) to drive the suction cup assembly (301) to move up and down. The second moving assembly (303) is connected to the first moving assembly (302) to drive the first moving assembly (302) to move back and forth between the storage area (100) and the feeding area (200).

12. A method for high-voltage pulse separation and recovery of positive electrode sheets, characterized in that, The positive electrode sheet (700) is separated and recovered using the high-voltage pulse separation and recovery device based on directional circulation as described in any one of claims 1-11, the method comprising the following steps: Step S100: The feeding mechanism (3) transfers the positive electrode sheet (700) to be processed in the storage area (100) to the first conveying mechanism (2) in the feeding area (200), and then the first conveying mechanism (2) conveys the positive electrode sheet (700) to the base (5) in the processing area (300); In step S200, after the positive electrode (700) is delivered to the base (5), the pressure plate (601) of the pulse discharge module (6) descends so that the energized part (602) abuts against the positive electrode (700) and presses the positive electrode (700) and the base (5) together into the solution in the reaction tank (4); Step S300: After the positive electrode (700) is completely immersed in the solution, the energized part (602) is energized to apply a pulse current to the positive electrode (700) so that the positive electrode material of the positive electrode (700) is separated from the current collector. In step S400, after separation, the pressure plate (601) rises and moves away from the base (5), causing the base (5) to rise and reset. The second conveying mechanism (7) then conveys the current collector to the recycling area (400) for recycling.

13. The method for high-voltage pulse separation and recovery of positive electrode sheets according to claim 12, characterized in that, In step S400, during the process of the current collector moving from the processing zone (300) to the recovery zone (400), the current collector is cleaned and dried.

14. The method for high-voltage pulse separation and recovery of positive electrode sheets according to claim 12, characterized in that, The first conveying mechanism (2) conveys a material tray (1), and the base (5) is provided with a positioning structure (8); In step S100, the feeding mechanism (3) positions the positive electrode sheet (700) on the material tray (1), and the first conveying mechanism (2) conveys the material tray (1) and the positive electrode sheet (700) together to the base (5); In step S200, during the process of the material tray (1) being conveyed to the base (5), the positioning structure (8) blocks and positions the material tray (1), so that the positive electrode plate (700) on the material tray (1) is aligned with the energized part (602).

15. The method for high-voltage pulse separation and recovery of positive electrode sheets according to claim 14, characterized in that, The recycling area (400) is provided with a recycling box (11) with an open top. A rotating seat (12) is provided above the recycling box (11). The rotating seat (12) is provided with a fixing mechanism (13) and a third conveying mechanism (15) connected to the first conveying mechanism (2). In step S400, the second conveying mechanism (7) conveys the tray (1) to the rotating seat (12), and then the fixing mechanism (13) abuts against the tray (1) to restrict the tray (1) on the rotating seat (12); The rotating seat (12) is flipped over, and the current collector on the material tray (1) is poured into the recycling box (11) for recycling. Then the rotating seat (12) is flipped back to its original position, the fixing mechanism (13) moves away from the material tray (1), and the third conveying mechanism (15) conveys the material tray (1) to the first conveying mechanism (2) for recycling.

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