Soaking device for recycling lithium battery pole piece

Abstract

The utility model discloses a soaking device for recycling a lithium battery pole piece, which belongs to the technical field of new energy and energy conservation, and adopts the technical scheme that the soaking device comprises a dissolving tank, a bracket is arranged on the outer side of the top of the dissolving tank, an adjusting assembly is arranged at the bottom of the bracket, a soaking assembly is arranged at the bottom of the adjusting assembly, and the soaking assembly is arranged in the dissolving tank. The adjusting assembly comprises a fixed seat slidably connected to the inner side of the support, the top of the fixed seat is fixedly connected with a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected with a supporting seat. The problem that the recovery efficiency is affected due to the fact that the pole pieces at the bottom and corners of the container cannot be fully contacted with the dissolving solution due to extrusion of the pole pieces on the upper layer when many lithium battery pole pieces are recovered in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of new energy and energy-saving technology, and in particular to a soaking device for recycling lithium battery electrode sheets. Background Technology

[0002] With the widespread application of lithium iron phosphate batteries in energy storage and power fields, the production scale of battery companies has also experienced explosive growth. The amount of waste electrode sheets that have not yet been injected with liquid during the production process is also very large. For a large manufacturer with a capacity of 100GWh, the demand for lithium iron phosphate materials for a 280Ah large aluminum-cased battery is about 240,000 tons. Calculated based on an electrode sheet scrap rate of 10%, that is 24,000 tons, with an output value of more than 600 million RMB, indicating a huge market prospect.

[0003] In existing lithium battery electrode dissolution processes, the lithium battery electrode is directly placed into the dissolution device, which requires manual stirring. Otherwise, the lithium battery electrode may accumulate in the dissolution device, resulting in low dissolution efficiency. In addition, the impurities generated after dissolution need to be cleaned regularly, which requires shutdown for cleaning.

[0004] The existing patent (publication number: CN222510833U) discloses a dissolving device for recycling lithium battery electrodes. It uses a motor to rotate a turntable and change the position of the hoppers, ensuring that one hopper is always above the solution surface for removing undissolved impurities and adding lithium battery electrodes, while the other hopper is below the solution surface for dissolution. This allows for continuous loading, unloading, and dissolution without stopping the machine, significantly improving work efficiency. An electric slide moves along an electric rail, and a pneumatic cylinder raises and lowers a leveling plate to adjust its height. The leveling plate then evens out the lithium battery electrodes in the hoppers, ensuring uniform thickness and sufficient contact with the solution, thus improving dissolution efficiency.

[0005] To address the aforementioned issues, existing patents offer solutions. Existing immersion devices for recycling lithium battery electrodes typically place the lithium battery electrodes directly inside a container, then bring the container into contact with the dissolving solution for recycling and dissolution. However, when recycling a large number of lithium battery electrodes, the electrodes at the bottom and corners of the container may not be able to fully contact the dissolving solution due to the pressure from the upper electrodes, resulting in insufficient immersion and thus affecting recycling efficiency.

[0006] To address this, a soaking device for recycling lithium battery electrodes is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a soaking device for recycling lithium battery electrodes, which can solve the problem that existing soaking devices for recycling lithium battery electrodes usually place the lithium battery electrodes directly inside the container and then bring the container into contact with the dissolving liquid for recycling and dissolution. However, when recycling a large number of lithium battery electrodes, the electrodes at the bottom and corners of the container may not be able to fully contact the dissolving liquid due to the compression of the upper electrodes, resulting in insufficient soaking and thus affecting the recycling efficiency.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an immersion device for recycling lithium battery electrode sheets, comprising a dissolving tank, a support being provided on the top outer side of the dissolving tank, an adjustment component being provided at the bottom of the support, and an immersion component being provided at the bottom of the adjustment component;

[0009] The adjustment assembly includes a fixed seat slidably connected to the inner side of the bracket. A hydraulic cylinder is fixedly connected to the top of the fixed seat. A support seat is fixedly connected to the output end of the hydraulic cylinder. A limit rod is fixedly connected to the top of the support seat. The limit rod is slidably connected to the fixed seat. A slide rail is fixedly connected to the inner side of the bracket. A limit slider is slidably connected to the outer side of the slide rail. A displacement drive is fixedly connected to the inner side of the limit slider. The displacement drive is threadedly connected to the support seat. A fixed support plate is fixedly connected to the bottom of the support seat. Shock-absorbing seats are fixedly connected to both sides of the bottom of the fixed support plate.

[0010] Preferably, the soaking assembly includes a fixing plate fixedly connected to the bottom of the fixing support plate, and a drive motor is fixedly connected to the outside of the fixing plate.

[0011] Preferably, the output end of the drive motor is fixedly connected to a rotating shaft, a transmission wheel is fixedly connected to the outer side of the rotating shaft, and a transmission belt is sleeved on the outer side of the transmission wheel.

[0012] Preferably, a soaking roller is movably connected to the bottom of the transmission belt, and a fixed cover plate is snapped onto the outer side of the soaking roller.

[0013] Preferably, a sedimentation tank is provided on the outside of the dissolving tank, a transfer pump is bolted to the top of the sedimentation tank, the inlet end of the transfer pump is connected to a transfer pipe, the transfer pipe is connected to the dissolving tank, and the output end of the transfer pump is connected to the sedimentation tank.

[0014] Preferably, a laser displacement sensor is bolted to the outside of the fixed base, and a data acquisition device is electrically connected to the outside of the laser displacement sensor. The data acquisition device is bolted to the fixed base.

[0015] Preferably, a drain pipe is connected to the front side of the dissolving tank, and a control valve is provided on the outside of the drain pipe.

[0016] Preferably, a feed pipe is connected to the left side of the dissolving tank, and a flange is threadedly connected to the outside of the feed pipe.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application can precisely control the horizontal position and immersion depth of the soaking drum in the dissolution tank by adjusting the component, so that the lithium battery electrode is in the optimal soaking position, ensuring that the electrode is fully and evenly in contact with the soaking solution, which greatly improves the soaking effect and thus improves the recycling efficiency. At the same time, when recycling lithium battery electrodes of different batches and shapes, by flexibly adjusting the position of the soaking drum, it can be ensured that each electrode can effectively participate in the soaking reaction.

[0019] 2. This application utilizes an immersion assembly to efficiently separate active materials from lithium battery electrodes. The immersion drum continuously tumbles the lithium battery electrodes, ensuring they are fully in contact with the immersion solution from all directions, thus improving immersion efficiency and effectiveness. This thorough contact allows the active materials on the electrodes to be separated more quickly and completely, improving the quality and efficiency of lithium battery electrode recycling. For electrodes with strong active material adhesion, the continuous rotation of the drum and the tumbling of the electrodes ensure effective separation of the active materials. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of a lithium battery electrode recycling soaking device according to the present invention;

[0021] Figure 2 This is a cross-sectional view of the dissolving tank of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0023] Figure 4 This is a schematic diagram of the immersion assembly of this utility model;

[0024] Figure 5 This is a schematic diagram of the sedimentation tank of this utility model.

[0025] In the diagram, 1. Dissolving tank; 2. Support frame; 3. Sedimentation tank; 4. Adjustment assembly; 401. Fixed base; 402. Hydraulic cylinder; 403. Support base; 404. Limiting rod; 405. Slide rail; 406. Limiting slider; 407. Displacement drive component; 408. Fixed support plate; 409. Shock absorber; 5. Immersion assembly; 501. Fixed plate; 502. Drive motor; 503. Rotating shaft; 504. Transmission wheel; 505. Transmission belt; 506. Immersion drum; 507. Fixed cover plate; 6. Conveying pump; 7. Conveying pipe; 8. Laser displacement sensor; 9. Data acquisition device; 10. Drain pipe; 11. Control valve; 12. Feed pipe; 13. Flange. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A soaking device for recycling lithium battery electrode sheets includes a dissolving tank 1, a support 2 is provided on the top outer side of the dissolving tank 1, an adjustment component 4 is provided at the bottom of the support 2, and an soaking component 5 is provided at the bottom of the adjustment component 4.

[0029] The adjustment assembly 4 includes a fixed seat 401 slidably connected to the inner side of the bracket 2. A hydraulic cylinder 402 is fixedly connected to the top of the fixed seat 401. A support seat 403 is fixedly connected to the output end of the hydraulic cylinder 402. A limit rod 404 is fixedly connected to the top of the support seat 403. The limit rod 404 is slidably connected to the fixed seat 401. A slide rail 405 is fixedly connected to the inner side of the bracket 2. A limit slider 406 is slidably connected to the outer side of the slide rail 405. A displacement drive 407 is fixedly connected to the inner side of the limit slider 406. The displacement drive 407 is threadedly connected to the support seat 403. A fixed support plate 408 is fixedly connected to the bottom of the support seat 403. Shock-absorbing seats 409 are fixedly connected to both sides of the bottom of the fixed support plate 408.

[0030] In this embodiment: by activating the displacement drive 407, the displacement drive 407 drives the support base 403 to move left and right, thereby causing the soaking roller 506 at the bottom of the support base 403 to move horizontally. Through the action of the displacement drive 407, the soaking roller 506 can be accurately moved to the designated position in the dissolution tank 1, so that the lithium battery electrode sheet is in the optimal soaking position in the dissolution tank 1, ensuring that the electrode sheet is in full and uniform contact with the soaking solution, thereby improving the soaking effect and recycling efficiency. Then, the hydraulic cylinder 402 is activated, and the hydraulic cylinder 402 pushes the support base 403 downward. During the downward movement of 03, the displacement drive 407 and the limiting slider 406 slide outside the slide rail 405. At the same time, the limiting support rod 404 on the top of the support 403 slides inside the fixed seat 401. The limiting support rod 404, the limiting slider 406 and the slide rail 405 work together to limit the movement trajectory of the support 403, which facilitates the adjustment of the immersion depth of the soaking roller 506 in the dissolution pool 1, ensuring that the lithium battery electrode can fully contact the soaking liquid during the soaking process. At the same time, the shock-absorbing seat 409 can prevent the fixed support plate 408 from making rigid contact with the dissolution pool 1.

[0031] Specifically, such as Figure 4 As shown, the soaking assembly 5 includes a fixing plate 501 fixedly connected to the bottom of the fixing support plate 408, and a drive motor 502 is fixedly connected to the outside of the fixing plate 501.

[0032] Specifically, such as Figure 4 As shown, a rotating shaft 503 is fixedly connected to the output end of the drive motor 502, and a transmission wheel 504 is fixedly connected to the outer side of the rotating shaft 503. A transmission belt 505 is sleeved on the outer side of the transmission wheel 504.

[0033] Specifically, such as Figure 4 As shown, a soaking roller 506 is movably connected to the bottom of the transmission belt 505, and a fixed cover plate 507 is snapped onto the outside of the soaking roller 506.

[0034] In this embodiment: First, the lithium battery electrodes to be recycled are placed inside the soaking drum 506, taking care to avoid the electrodes piling up or getting tangled together, so as to ensure that the electrodes can fully contact the soaking solution later. Then, the fixing cover plate 507 is snapped and fixed to the soaking drum 506. The drive motor 502 is started, and the output shaft of the drive motor 502 starts to rotate, driving the rotating shaft 503 fixed to it to rotate together. When the rotating shaft 503 rotates, the transmission wheel 504 fixed on its outer side also rotates. Since the transmission wheel 504 is fitted with a transmission belt 505, the rotation of the transmission wheel 504 drives the transmission belt 505 to move through friction. The bottom of the transmission belt 505 is movably connected to the soaking drum 506, so the movement of the transmission belt 505 drives the soaking drum 506 to rotate. During the rotation of the soaking drum 506, the lithium battery electrodes to be recycled placed in the drum are constantly tumbling and fully contacting the soaking solution, so as to achieve the soaking and separation of the active materials on the electrodes.

[0035] Specifically, such as Figure 5 As shown, a sedimentation tank 3 is installed on the outside of the dissolving tank 1. A transfer pump 6 is bolted to the top of the sedimentation tank 3. The inlet end of the transfer pump 6 is connected to a transfer pipe 7, which is connected to the dissolving tank 1. The output end of the transfer pump 6 is connected to the sedimentation tank 3.

[0036] Specifically, such as Figure 2 As shown, a laser displacement sensor 8 is bolted to the outside of the fixed base 401, and a data acquisition device 9 is electrically connected to the outside of the laser displacement sensor 8. The data acquisition device 9 is bolted to the fixed base 401.

[0037] In this embodiment: by setting up a sedimentation tank 3, a transfer pump 6, and a transfer pipe 7, after the lithium battery electrode sheets are soaked, the transfer pump 6 is turned on. The transfer pump 6 draws the soaked solution from the dissolution tank 1 through the transfer pipe 7 connected to the water inlet. Under the action of the transfer pump 6, the solution flows along the transfer pipe 7 to the sedimentation tank 3. After entering the sedimentation tank 3, it is left to stand, allowing the active material that has fallen off the electrode sheets to settle to the bottom of the sedimentation tank 3 under the action of gravity, realizing solid-liquid separation. This facilitates further processing and recycling of the solid material, and also obtains a relatively pure soaking solution for recycling or environmental treatment, improving the efficiency and quality of lithium battery electrode sheet recycling. By setting up a laser displacement sensor 8 and a data acquisition device 9, the laser displacement... Sensor 8 is installed on the outside of the fixed base 401. During operation, it continuously monitors the distance between the soaking component 5 and the dissolving tank 1 and transmits the monitoring data in real time to the data acquisition unit 9, which is electrically connected to it. The data acquisition unit 9 is bolted to the fixed base 401 and is responsible for collecting and storing the data transmitted by the laser displacement sensor 8. Then, it transmits the data to the external control system. The operator can then view this data at any time to understand the position status of the soaking component 5. At the same time, based on the distance data, the horizontal and vertical positions of the soaking roller 506 can be adjusted more accurately, so that the soaking roller 506 can reach the optimal soaking position in the dissolving tank 1 more precisely and its immersion depth can be controlled more accurately, further improving the stability and consistency of the soaking effect.

[0038] Specifically, such as Figure 1 As shown, a drain pipe 10 is connected to the front side of the dissolving tank 1, and a control valve 11 is installed on the outside of the drain pipe 10.

[0039] Specifically, such as Figure 2 As shown, a feed pipe 12 is connected to the left side of the dissolving tank 1, and a flange 13 is threadedly connected to the outside of the feed pipe 12.

[0040] In this embodiment: By setting up a drain pipe 10 and a control valve 11, when it is necessary to discharge the soaking solution in the dissolving tank 1 or to clean the equipment after soaking, the control valve 11 outside the drain pipe 10 is opened. The soaking solution in the dissolving tank 1 is discharged through the drain pipe 10 under the action of gravity. After the discharge is completed, the control valve 11 is closed to prevent the soaking solution from leaking. The setting of the drain pipe 10 and the control valve 11 facilitates the discharge operation of the soaking solution in the dissolving tank 1. In the process of equipment maintenance, cleaning and replacement of soaking solution, the soaking solution can be discharged quickly and conveniently, which improves the convenience and efficiency of equipment operation. At the same time, it also helps to ensure the cleanliness of the internal environment of the equipment and reduce the problem of equipment corrosion or the impact on the subsequent soaking effect caused by the residue of soaking solution. By setting up a feed pipe 12 and a flange 13, when adding soaking solution to the dissolving tank 1, the flange 13 is first connected to the external soaking solution storage container, and then the material is added. The cooperation between the flange 13 and the feed pipe 12 avoids the leakage of soaking solution during the material addition process, which improves the efficiency and safety of material addition.

[0041] Working Principle: In the process of using the immersion device for lithium battery electrode recycling, immersion solution is first added to the dissolving tank 1 through the feed pipe 12 and flange 13. Then, the lithium battery electrodes to be recycled are placed inside the immersion drum 506, taking care to avoid electrode accumulation or entanglement to ensure sufficient contact between the electrodes and the immersion solution. Next, the fixing cover 507 is snapped into place on the immersion drum 506. Then, the displacement drive 407 is activated, causing the support base 403 to move left and right, thereby causing the immersion drum 506 at the bottom of the support base 403 to move horizontally. Through the action of the displacement drive 407, the immersion solution is fully immersed. The roller 506 is accurately moved to the designated position within the dissolution tank 1, ensuring the lithium battery electrode sheets are in the optimal immersion position within the tank. This guarantees sufficient and uniform contact between the electrode sheets and the immersion solution, thereby improving the immersion effect and recycling efficiency. Next, the hydraulic cylinder 402 is activated, pushing the support base 403 downwards. During this downward movement, the displacement drive component 407 and the limiting slider 406 slide outside the slide rail 405. Simultaneously, the limiting support rod 404 at the top of the support base 403 slides inside the fixed base 401. The limiting support rod 404, the limiting slider 406, and the slide rail 405 work together to maintain the position of the support base 403. The movement trajectory of the 3rd wheel is limited to facilitate adjustment of the immersion depth of the soaking roller 506 in the dissolving tank 1, ensuring that the lithium battery electrode sheet can fully contact the soaking solution during the soaking process. At the same time, the shock-absorbing seat 409 can prevent the fixed support plate 408 from making rigid contact with the dissolving tank 1. Then, the drive motor 502 is started, and the output shaft of the drive motor 502 starts to rotate, driving the rotating shaft 503 fixedly connected to it to rotate together. When the rotating shaft 503 rotates, the transmission wheel 504 fixed on its outer side also rotates. Since the transmission wheel 504 is fitted with a transmission belt 505, the rotation of the transmission wheel 504 drives the transmission belt 505 to move through friction. The bottom of the transmission belt 505 The part is connected to the soaking drum 506, so the movement of the transmission belt 505 drives the soaking drum 506 to rotate. During the rotation of the soaking drum 506, the lithium battery electrode sheets that need to be recycled are placed in the drum and continuously tumble, making full contact with the soaking solution to achieve the soaking and separation of active materials on the electrode sheets. Finally, the transfer pump 6 is started. The transfer pump 6 draws the soaked solution from the dissolving tank 1 through the transfer pipe 7. Under the action of the transfer pump 6, the solution flows along the transfer pipe 7 to the sedimentation tank 3. After the solution enters the sedimentation tank 3, it is left to stand in the sedimentation tank 3 for a period of time, so that the active materials that have fallen off the electrode sheets settle to the bottom of the sedimentation tank 3 under the action of gravity, thus achieving solid-liquid separation.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A soaking device for lithium battery pole piece recycling, comprising a dissolving pool (1), characterized in that: The top outer side of the dissolving tank (1) is provided with a support (2), the bottom of the support (2) is provided with an adjusting assembly (4), and the bottom of the adjusting assembly (4) is provided with a soaking assembly (5); The adjusting assembly (4) comprises a fixed seat (401) slidably connected to the inner side of the support (2), the top of the fixed seat (401) is fixedly connected with a hydraulic cylinder (402), the output end of the hydraulic cylinder (402) is fixedly connected with a supporting seat (403), the top of the supporting seat (403) is fixedly connected with a limiting support rod (404), the limiting support rod (404) is slidably connected with the fixed seat (401), the inner side of the support (2) is fixedly connected with a sliding rail (405), the outer side of the sliding rail (405) is slidably connected with a limiting sliding block (406), the inner side of the limiting sliding block (406) is fixedly connected with a displacement driving piece (407), the displacement driving piece (407) is threadedly connected with the supporting seat (403), and the bottom of the supporting seat (403) is fixedly connected with a fixed support plate (408). Both sides of the bottom of the fixed support plate (408) are fixedly connected with damping seats (409). 2.The soaking device for recovering lithium battery pole pieces according to claim 1, characterized in that: The soaking assembly (5) comprises a fixed plate (501) fixedly connected to the bottom of the fixed support plate (408), and the outer side of the fixed plate (501) is fixedly connected with a driving motor (502). 3.The soaking device for recovering lithium battery pole pieces according to claim 2, characterized in that: The output end of the driving motor (502) is fixedly connected with a rotating shaft (503), the outer side of the rotating shaft (503) is fixedly connected with a transmission wheel (504), and the outer side of the transmission wheel (504) is sleeved with a transmission belt (505).

4. The soaking device for recovering lithium battery pole pieces according to claim 3, characterized in that: The bottom of the transmission belt (505) is movably connected with a soaking roller (506), and the outer side of the soaking roller (506) is clamped with a fixed cover plate (507).

5. The soaking device for lithium battery pole piece recovery according to claim 1, characterized in that: The outer side of the dissolving tank (1) is provided with a precipitation tank (3), the top of the precipitation tank (3) is bolted with a conveying pump (6), the water inlet end of the conveying pump (6) is connected with a conveying pipe (7), the conveying pipe (7) communicates with the dissolving tank (1), and the output end of the conveying pump (6) communicates with the precipitation tank (3). 6.The soaking device for recovering lithium battery pole pieces according to claim 1, characterized in that: The outer side of the fixed seat (401) is bolted with a laser displacement sensor (8), and the outer side of the laser displacement sensor (8) is electrically connected with a data collector (9), and the data collector (9) is bolted with the fixed seat (401). 7.The soaking device for recovering lithium battery pole pieces according to claim 1, characterized in that: The front side of the dissolving tank (1) is communicated with a drain pipe (10), and the outer side of the drain pipe (10) is provided with a control valve (11). 8.The soaking device for recovering lithium battery pole pieces according to claim 1, characterized in that: The left side of the dissolving tank (1) is connected with a feed pipe (12), and the outer side of the feed pipe (12) is threadedly connected with a flange plate (13).

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