A new energy vehicle waste lithium battery wet recovery processing device

Abstract

The application provides a new energy automobile waste lithium battery wet recovery treatment device, and belongs to the technical field of waste battery recovery equipment. The device comprises a shell, a discharging mechanism is installed on the inner wall of the shell, the discharging mechanism comprises a hose, the output end of the hose is fixedly connected with a pumping module, a holding mechanism is placed on the top of the discharging mechanism, and a discharging mechanism is installed on the inner wall of the shell. The pumping module on the discharging mechanism injects CO2 into the waste lithium battery, and the circulation and bubble flow provide forced convection, which can quickly take away the reaction products and heat, isolate oxygen to reduce the risk of fire, effectively accelerate the subsequent overall discharge rate, and the holding mechanism can instantly remove the residual electrolyte brought out through the scraping opening after the waste lithium battery is discharged, block the diffusion of pollutants from the source, and significantly improve the recovery environmental protection.

Description

Technical Field

[0001] This invention relates to the field of waste battery recycling equipment technology, and in particular to a wet recycling and processing device for waste lithium batteries from new energy vehicles. Background Technology

[0002] The wet recycling process involves crushing and dissolving waste batteries, then using appropriate chemical reagents to selectively separate the metal elements in the leaching solution, producing high-grade cobalt metal or lithium carbonate for direct recycling. Wet recycling is well-suited for recycling waste lithium batteries with relatively simple chemical compositions. Its equipment investment cost is low, making it suitable for small and medium-sized-scale recycling of waste lithium batteries. Therefore, this method is currently widely used.

[0003] In existing wet recycling and processing devices, if there is still residual charge in the lithium battery during the crushing process, it is easy to cause a short circuit and fire, resulting in low safety. The battery casing and internal sealing structure physically isolate the electrolyte from the outside environment. The aqueous solution can only seep in through extremely small pressure relief valves or defects, and the penetration rate is insufficient for complete discharge. Furthermore, when the casing is intact, the external water cannot contact the internal electrodes, and the residual charge cannot be discharged through the water medium. If the discharge path of "crushing first and then immersing in water" is adopted, the safety performance is low. Therefore, this application provides a wet recycling and processing device for waste lithium batteries from new energy vehicles to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a wet recycling and processing device for waste lithium batteries from new energy vehicles. This device addresses the problems that existing lithium batteries, if still having residual charge during the crushing process, are prone to short circuits and fires. Furthermore, the battery casing and internal sealing structure physically isolate the electrolyte from the outside environment, allowing the aqueous solution to seep in only through extremely small pressure relief valves or defects, resulting in insufficient penetration rate for complete discharge. Additionally, when the casing is intact, external water cannot contact the internal electrodes, preventing residual charge from being discharged through the water medium.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A wet recycling device for waste lithium batteries from new energy vehicles includes a housing with a slide rail mounted on the back and a robotic arm slidably connected to the top of the slide rail. A discharge mechanism is installed on the inner wall of the housing to discharge residual charge in the waste lithium batteries. The discharge mechanism includes a flexible hose, the output end of which is fixedly connected to a pumping module. A holding mechanism is placed on top of the discharge mechanism to temporarily store the pre-treated lithium batteries, and a telescopic frame is installed at the bottom of the holding mechanism. A feeding mechanism is installed on the inner wall of the housing, including a feeding box. The front and back of the feeding box are fixedly connected to the inner wall of the housing, and the top and bottom of the feeding box are open. The feeding mechanism is used to crush and feed the batteries.

[0007] Optionally, an exhaust pipe is installed on the top of the housing, a control panel is installed on the front surface of the housing, a conveying pump is sleeved on the front surface of the housing, one end of the conveying pump is sleeved on the surface of the supply box, and a material conveying port is opened on one side of the housing.

[0008] Optionally, the discharge mechanism includes a supply box, which is installed on the bottom inner wall of the housing. A tray is installed on the top of the supply box, and the top two sides of the tray are symmetrical. An aerator is installed at the center of the inner wall of the tray. Flexible hoses are sleeved on both sides of the supply box, and a pumping module is fixedly connected to one end of each flexible hose.

[0009] Optionally, the pumping module includes a fixed base, a plug-in block is installed on one side of the inner wall of the fixed base, a pumping port is opened at one end of the plug-in block, multiple sets of support bars are provided at the top and bottom of the plug-in block, multiple sets of push pins are installed at the output end of the pumping port, a groove is opened on the inner side of the push pin, a shell-cracking hook is installed on the inner wall of the groove, and a baffle is installed on one side of the outer wall of the shell-cracking hook.

[0010] Optionally, a dual-head pump is installed inside the supply box. The output end of the delivery pump is fixedly connected to the surface of the dual-head pump, and the input end of the hose is fixedly connected to the output end of the dual-head pump. A bidirectional cylinder is horizontally installed inside the supply box. Output shafts are installed on both the left and right output ends of the bidirectional cylinder. The fixing base is L-shaped. The plug block is made of tungsten carbide. The opening of the pumping port is set at an angle. The front end of the push needle is needle-cone shaped and has a groove inside. The baffle angle is 30 degrees.

[0011] Optionally, the holding mechanism includes a placement box, a connecting plate fixedly connected to one side of the placement box, a telescopic frame installed at the bottom of the placement box, a fixed tray fixedly connected to one side of the placement box, the bottom of the fixed tray fitting snugly against the telescopic frame, two sets of first electric telescopic rods provided inside the telescopic frame, scraping ports installed on both sides of the telescopic frame, and multiple sets of barbs provided at the top and bottom of the scraping ports.

[0012] Optionally, the placement box is configured to be plugged into the top of the pallet, the number of the holding mechanisms is set to multiple sets, the multiple sets of holding mechanisms are connected by the connecting plate through threads, the inner side of the scraper opening is aligned with the outer surface of the plug-in block, and the front end of the barb is bent into a hook shape.

[0013] Optionally, the top opening of the feeding box is funnel-shaped, and the inner wall of the top opening of the feeding box is directly the same as the outer diameter of the fixed tray. A second electric telescopic rod is sleeved on both sides of the feeding box. A clamping plate is sleeved on one end of the second electric telescopic rod. The clamping plate is L-shaped, and a push rod is fixedly connected to one side of the clamping plate. One end of the push rod is installed on the outside of the telescopic frame.

[0014] Optionally, a conveyor belt is installed at the bottom of the housing, with one end of the conveyor belt located on the inner wall of the housing, the top of the conveyor belt aligned with the opening at the bottom of the feeding box, and the other end of the conveyor belt located on the outside of the feeding port.

[0015] Optionally, a dryer is installed on one side of the housing, with the air intake at the back of the dryer located on the outer wall of the housing and the air outlet at the front of the dryer located on the inner wall of the housing.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above solution, a discharge mechanism is set up, and a pumping module is inserted into both sides of the waste lithium battery. The pusher gradually pierces the surface of the waste lithium battery and enters the interior. The support bar supports the internal structure of the waste lithium battery, and CO2 is pumped into the waste lithium battery through the pumping port to distribute it evenly. This reduces the risk of piercing the interior of the waste lithium battery. In addition, the set aerator generates a large number of micro bubbles, which creates a huge gas-liquid interface inside the waste lithium battery. This significantly improves the mass transfer rate of CO2 diffusion into the electrolyte and isolates oxygen, making the subsequent discharge of the waste lithium battery more thorough. This eliminates the risk of explosion caused by local short circuits during further crushing. At the same time, the bubbles can adsorb volatile decomposition products, limit their diffusion concentration, and reduce the risk of toxic gas release in subsequent processes.

[0018] By setting up a support mechanism, the surface material is scraped off through the scraper after discharge, which improves the recycling efficiency of waste lithium batteries and effectively isolates the recycling device from the corrosion of harmful substances, reduces the cost of manual cleaning and replacement, and can effectively avoid contact with residual materials during discharge, which may cause local combustion due to high temperature, thus improving the overall safety of the equipment. Furthermore, it blocks the spread of pollutants from the source and significantly improves the environmental friendliness of recycling.

[0019] By setting up a feeding mechanism, the push rod applies pressure to both sides of the telescopic frame. Due to the excessive pressure on both sides of the telescopic frame, the surface of the waste lithium battery begins to crack, achieving the effect of pre-crushing. This method not only ensures that the waste lithium battery is firmly clamped in the predetermined position during the pre-crushing process, but also greatly enhances the overall crushing force, significantly improves the success rate of effectively pre-crushing waste lithium batteries of various shapes, sizes and shell strengths, and creates favorable conditions for subsequent thorough crushing and sorting processes. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0021] Figure 1 This is a three-dimensional structural diagram of the recycling and processing device;

[0022] Figure 2 This is a three-dimensional cross-sectional view of the recycling and processing device;

[0023] Figure 3 This is a three-dimensional cross-sectional view of the rear structure of the recycling and processing device;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure assembly during the discharge process of the support mechanism and the discharge mechanism;

[0025] Figure 5 This is a three-dimensional structural diagram of the discharge mechanism;

[0026] Figure 6 This is a three-dimensional structural diagram of the pumping module;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the support bar;

[0028] Figure 8 A three-dimensional structural diagram of the support mechanism;

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the telescopic frame;

[0030] Figure 10 This is a three-dimensional structural diagram of the scraper nozzle;

[0031] Figure 11 A schematic diagram of the three-dimensional structure assembly during the material feeding process of the support mechanism and the unloading mechanism;

[0032] Figure 12 This is a three-dimensional structural process diagram of the feeding mechanism;

[0033] Figure 13 This is a three-dimensional structural diagram of the plug-in block.

[0034] Figure 14 A three-dimensional structural diagram illustrating the process of inserting the connector into the scraper opening;

[0035] Figure 15 This is a magnified three-dimensional view of the pusher insertion process;

[0036] Figure 16 This is a schematic diagram of the three-dimensional structure of the pusher needle;

[0037] Figure 17 This is a bottom view of the three-dimensional structure of the pusher pin.

[0038] Reference numerals: 1. Shell; 10. Exhaust pipe; 11. Control panel; 12. Conveying pump; 13. Slide rail; 14. Material inlet; 2. Discharge mechanism; 20. Supply box; 21. Hose; 22. Pumping module; 220. Fixing base; 221. Connecting block; 222. Pumping port; 223. Support bar; 224. Push needle; 225. Shell cracking hook; 226. Baffle; 227. Groove; 23. Output shaft; 24. Pallet; 25. Aerator; 3. Holding mechanism; 30. Placement box; 31. Connecting plate; 32. Telescopic frame; 320. First electric telescopic rod; 321. Scraper port; 322. Barb; 33. Fixed pallet; 4. Robotic arm; 5. Unloading mechanism; 50. Unloading box; 51. Second electric telescopic rod; 52. Clamping plate; 53. Push rod; 6. Conveyor belt; 7. Dryer.

[0039] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0040] The following is a detailed description of a wet recycling and processing device for waste lithium batteries from new energy vehicles provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0041] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0042] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0043] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0044] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0045] like Figures 1 to 17As shown, an embodiment of the present invention provides a wet recycling device for waste lithium batteries from new energy vehicles, including a housing 1. A slide rail 13 is installed on the back of the housing 1, and a robotic arm 4 is slidably connected to the top of the slide rail 13. A discharge mechanism 2 is installed on the inner wall of the housing 1. The discharge mechanism 2 discharges the residual charge in the waste lithium batteries. The discharge mechanism 2 includes a hose 21, and a pumping module 22 is fixedly connected to the output end of the hose 21. A holding mechanism 3 is placed on the top of the discharge mechanism 2. The holding mechanism 3 temporarily stores the pre-treated lithium batteries. A telescopic frame 32 is installed at the bottom of the holding mechanism 3. A feeding mechanism 5 is installed on the inner wall of the housing 1. The feeding mechanism 5 includes a feeding box 50. The front end and back of the feeding box 50 are fixedly connected to the inner wall of the housing 1. The top and bottom of the feeding box 50 are both open. The feeding mechanism 5 is used to crush the batteries and feed them in.

[0046] As one implementation method in this embodiment, such as Figures 1 to 3 As shown, an exhaust pipe 10 is installed on the top of the housing 1, a control panel 11 is installed on the front surface of the housing 1, and a conveying pump 12 is sleeved on the front surface of the housing 1. One end of the conveying pump 12 is sleeved on the surface of the supply box 20. A material conveying port 14 is opened on one side of the housing 1. During the unloading of waste lithium batteries, the exhaust pipe 10 absorbs internal gas and effectively discharges harmful gases generated by battery breakage in a timely manner, ensuring a safe working environment. The operator starts the recycling and processing device by touching the control panel 11. CO2 is drawn in through the external interface of the conveying pump 12 and conveyed to the inside of the supply box 20 through the conveying pump 12. The gas is conveyed in a fully enclosed manner in the supply box 20. At the same time, the sealed conveying avoids the harm of personnel contact and significantly reduces the cost of subsequent environmental protection treatment.

[0047] As one implementation method in this embodiment, such as Figures 4 to 5 As shown, the discharge mechanism 2 includes a supply box 20, which is installed on the bottom inner wall of the housing 1. A support plate 24 is installed on the top of the supply box 20. The two sides of the top of the support plate 24 are symmetrical. An aerator 25 is installed at the center of the inner wall of the support plate 24. Flexible hoses 21 are sleeved on both sides of the supply box 20. A pumping module 22 is fixedly connected to one end of the flexible hose 21. CO2 is drawn in through the external interface of the delivery pump 12 and delivered to the inside of the supply box 20 through the delivery pump 12. Since a double-headed pump is installed inside the supply box 20, the double-headed pump pumps CO2 through the flexible hoses 21 on both sides of the supply box 20. CO2 is delivered to the pumping module 22 at the output end of the flexible hoses 21. A bidirectional circulating gas field is formed inside the supply box 20, and the CO2 delivery forms a countercurrent airflow. A uniform positive pressure environment can be established inside the supply box 20 to prevent metal dust from reaching the lower explosive limit and improve discharge safety. The positive pressure difference physically isolates external oxygen from penetrating and reduces the risk of explosion during the discharge of waste lithium batteries.

[0048] As one implementation method in this embodiment, such as Figures 6 to 7and Figures 13 to 17 As shown, the pumping module 22 includes a fixed base 220. A plug-in block 221 is installed on one side of the inner wall of the fixed base 220. A pumping port 222 is opened at one end of the plug-in block 221. Multiple sets of support bars 223 are provided at the top and bottom of the plug-in block 221. Multiple sets of push pins 224 are installed at the output end of the pumping port 222. A groove 227 is opened on the inner side of the push pin 224. A shell-cracking hook 225 is installed on the inner wall of the groove 227. A baffle 226 is installed on one side of the outer wall of the shell-cracking hook 225. When the pumping module 22 applies pressure to both sides of the waste lithium battery, the push pins 224 gradually break the surface of the waste lithium battery. Because the insulating sealing film on the inner side of the steel shell of the waste lithium battery forms an elastic buffer layer with the explosion-proof valve structure, it disperses the penetrating force of the pusher 224 and avoids the risk of electrolyte spraying and sparks caused by instantaneous shell breaking. The baffle 226 on one side of the shell-breaking hook 225 acts as a rigid reaction force support, ensuring that the rotational torque of the shell-breaking hook 225 is completely converted into the shell tearing force, so that the inner shell-breaking hook 225 can simultaneously expand the shell crack in a controllable manner, realize the gradual peeling of the layered material, and ensure that the internal residual voltage is slowly released through the tear edge. In addition, the support bars 223 at the top and bottom of the plug block 221 gradually expand the internal structure of the waste lithium battery, establish a stable support space inside the waste lithium battery. The support bars 223 effectively reduce the risk of internal short circuit caused by contact with the electrode during the peeling of the waste lithium battery surface. This discharge method improves the integrity of the internal electrode structure of the lithium battery and can penetrate into the internal structure of the waste lithium battery for complete discharge, providing core pre-treatment guarantee for recyclability.

[0049] As one implementation method in this embodiment, such as Figure 4 and Figure 6 As shown, a dual-head pump is installed inside the supply box 20. The output end of the delivery pump 12 is fixedly connected to the surface of the dual-head pump, and the input end of the hose 21 is fixedly connected to the output end of the dual-head pump. A bidirectional cylinder is horizontally installed inside the supply box 20. Output shafts 23 are installed on both the left and right output ends of the bidirectional cylinder. The fixed base 220 is L-shaped, the plug block 221 is made of tungsten carbide, the opening of the pump port 222 is set at an angle, the front end of the push needle 224 is needle-cone shaped and has a groove inside, and the baffle 226 has an angle of 30 degrees. The tungsten carbide plug block 221 reduces replacement costs, improves the service life of the equipment, and can effectively reduce the risk of sparks generated when rubbing against the electrode. The pump port 222 guides the airflow to directly hit the deepest part of the waste lithium battery, so that the waste lithium battery is discharged more thoroughly.

[0050] As one implementation method in this embodiment, such as Figures 8 to 10As shown, the holding mechanism 3 includes a placement box 30, a connecting plate 31 fixedly connected to one side of the placement box 30, a telescopic frame 32 installed at the bottom of the placement box 30, and a fixed tray 33 fixedly connected to one side of the placement box 30. The bottom of the fixed tray 33 fits perfectly against the telescopic frame 32. Two sets of first electric telescopic rods 320 are provided inside the telescopic frame 32. Scraping ports 321 are installed on both sides of the telescopic frame 32. Multiple sets of barbs 322 are provided at the top and bottom of the scraping ports 321. During the discharge process, the barbs 322 arranged at the top and bottom of the scraping ports 321 scrape the surface of the plug block 221, and the barbs 322 simultaneously scrape the grooves 227 on the surface of the pusher 224, effectively removing the electrolyte and harmful substances carried by it and preventing the transfer of pollution. During the pre-crushing process, the first electric telescopic rods 320 drive the two sides of the telescopic frame 32 to squeeze towards the middle, realizing automated pre-crushing without manual contact, promoting further fine crushing and improving work efficiency.

[0051] As one implementation method in this embodiment, such as Figure 8 and Figure 10 As shown, the placement box 30 is configured to be plugged into the top of the tray 24. The number of holding mechanisms 3 is set to multiple sets, which are connected by a connecting plate 31. The inner side of the scraping port 321 is aligned with the outer surface of the plugging block 221. The front end of the barb 322 is bent into a hook shape, which can be fixedly connected to the connecting plate 31 as needed to form multiple sets of holding mechanisms 3, matching the flexible requirements of lithium battery recycling. The placement box 30 can be moved to the next recycling step in a short time by the robot arm 4. The design of the barb 322 effectively scrapes off the material carried out from the inside of the waste lithium battery from the surface of the pumping module 22, preventing the transfer of pollution.

[0052] As one implementation method in this embodiment, such as Figure 8As shown, the top opening of the feeding box 50 is funnel-shaped, and the inner wall of the top opening of the feeding box 50 is directly the same as the outer diameter of the fixed tray 33. Second electric telescopic rods 51 are sleeved on both sides of the feeding box 50. A clamping plate 52 is sleeved at one end of the second electric telescopic rod 51. The clamping plate 52 is L-shaped, and a push rod 53 is fixedly connected to one side of the clamping plate 52. One end of the push rod 53 is installed on the outside of the telescopic frame 32. When the supporting mechanism 3 moves down to the top of the feeding box 50 via the robotic arm 4, the opening of the feeding box 50 precisely supports the bottom of the supporting mechanism 3. The two ends of the first electric telescopic rod 320 retract towards the middle, generating a pulling force on the telescopic frames 32 on both sides. When the telescopic frame 32 retracts to a certain extent, it adheres to the surface of the waste lithium battery, and the second electric... The telescopic rod 51 drives the clamping plate 52 to clamp towards the center. The push rod 53 located on one side of the clamping plate 52 generates a pushing force towards the center. The push rod 53 applies pressure to both sides of the telescopic frame 32 again. Due to the excessive pressure on both sides of the telescopic frame 32, the surface of the waste lithium battery begins to crack, achieving the effect of pre-crushing. The progressive crushing improves the controllability of the waste lithium battery shell and internal structure, avoiding the generation of too much fine dust or violent reactions. During the clamping process on both sides, the waste lithium battery gradually falls into fragments and falls through the feeding box 50 to the top of the conveyor belt 6. The preliminary crushing reduces the energy consumption of subsequent refining work. Furthermore, the simultaneous pressure applied by the telescopic frame 32 and the push rod 53 significantly improves the success rate of effectively pre-crushing waste lithium batteries of various shapes, sizes, and shell strengths.

[0053] As one implementation method in this embodiment, such as Figures 1 to 2 As shown, a conveyor belt 6 is installed at the bottom of the housing 1. One end of the conveyor belt 6 is located on the inner wall of the housing 1, and the top of the conveyor belt 6 is aligned with the opening at the bottom of the feeding box 50. The other end of the conveyor belt 6 is located on the outside of the feeding port 14. A dryer 7 is installed on one side of the housing 1. The air intake at the back of the dryer 7 is located on the outer wall of the housing 1, and the air outlet at the front of the dryer 7 is located on the inner wall of the housing 1. The dryer 7 performs a drying process on the discharged waste lithium batteries to remove free water from the surface and internal pores of the batteries, cut off the electrolyte hydrolysis reaction path, and eliminate the conductive water molecules. The electrical pathway effectively reduces the risk of short circuits and thermal runaway. After air drying, the internal material is in the form of dry granules, improving crushing efficiency. At the same time, the dried material is less likely to adhere to the inner wall of the equipment, reducing the frequency of downtime for cleaning. The conveyor belt 6 enables fully automatic material flow, significantly reducing manual handling costs. Its closed conveying structure effectively isolates the risk of exposure of electrolyte and active materials inside the lithium battery after initial crushing, reducing environmental pollution from the source. The contactless conveying mode can also avoid the introduction of metal impurities, ensuring the purity of material recovery and minimizing the loss of valuable components.

[0054] The working principle of the technical solution provided by this invention is as follows:

[0055] First, the operator touches the control screen 11 to start the recycling device. At this time, the robotic arm 4 uses its built-in program to grab the waste lithium batteries and place them into the holding mechanism 3. The waste lithium batteries fall through the placement box 30 to the telescopic frame 32. The fixed trays 33 on both sides of the placement box 30 support the bottom of the falling waste lithium batteries, while the holding mechanism 3 is temporarily placed on top of the tray 24. At this time, the cylinder inside the supply box 20 pushes the output shaft 23 to move towards the center. The output shaft 23 is sleeved on the bottom of the fixed seat 220, which drives the pumping module 22 to move synchronously. During the movement of the pumping module 22, the hoses 21 fixedly connected to both sides of the fixed seat 220 move synchronously towards the center. Under the continuous action of the cylinder, The pumping module 22 applies pressure to both sides of the waste lithium battery through the scraper port 321. At this time, the pusher needle 224 gradually breaks through the surface of the waste lithium battery. Since the insulating sealing film on the inner side of the waste lithium battery's steel shell and the explosion-proof valve structure form an elastic buffer layer, the penetrating force of the pusher needle 224 is dispersed. While penetrating into the waste lithium battery, the baffle 226 on one side of the shell-crack hook 225 acts as a rigid reaction force support, ensuring that the rotational torque of the shell-crack hook 225 is completely converted into the shell tearing force, so that the inner shell-crack hook 225 simultaneously expands the shell crack in a controllable manner, realizing the gradual peeling of the layered material. To facilitate subsequent CO2 injection, the support strips 223 at the top and bottom of the plug block 221 The internal structure of the waste lithium battery is gradually expanded to establish a stable support space inside the waste lithium battery. During the insertion process, it continuously rubs against the electrode active layer. Furthermore, the multiple sets of ridges on the surface of the support strip 223 perform micro-cutting with the internal structure of the waste lithium battery, generating directional shear force. This causes the interface between the separator and the current collector to form multi-level interconnected pores, thereby increasing the CO2 permeation rate.

[0056] At this time, CO2 is drawn in through the external interface of the delivery pump 12 and delivered to the inside of the supply tank 20. Since a double-headed pump is installed inside the supply tank 20, the double-headed pump pumps CO2 through the hoses 21 on both sides of the supply tank 20. The CO2 is delivered to the pumping module 22 at the output end of the hoses 21 and injected into the waste lithium battery through the pumping port 222. CO2 enters the waste lithium battery through the holes opened in the support bar 223. At this time, the waste lithium battery is filled with CO2. The aerator 25 inside the tray 24 continues to operate, causing bubbles to be generated inside the waste lithium battery. The rising bubbles can carry away the local heat generated by the reaction when punctured. During the rising process of the bubbles, the electrolyte inside the waste lithium battery is stirred, breaking the concentration boundary layer, isolating oxygen, avoiding local reaction saturation, and ensuring that CO2 quickly penetrates into the depth of the electrolyte and the electrode surface.

[0057] After the discharge is completed, the cylinder of the supply box 20 drives the output shaft 23 to move outward. At this time, the pumping module 22 is pulled out from the inside of the waste lithium battery. As the pumping module 22 is pulled out, when the plug block 221 passes through the scraper outlet 321, the barbs 322 arranged at the top and bottom of the scraper outlet 321 scrape the surface of the plug block 221. At the same time, the barbs 322 scrape the groove 227 on the surface of the pusher pin 224, effectively removing the electrolyte and harmful substances it carries, preventing the transfer of pollution. Then the pumping module 22 is separated from both sides of the waste lithium battery.

[0058] Next, the robotic arm 4 is activated. The robotic arm 4 grasps the interconnected connecting plates 31, which are fixed together by bolts. Multiple sets of supporting mechanisms 3 can be fixed as needed. The robotic arm 4 then picks up the supporting mechanism 3 and slides it to the left along the movement trajectory of the slide rail 13. When it slides to the designated position, the supporting mechanism 3 aligns with the unloading mechanism 5. The robotic arm 4 then releases its gripper, and the supporting mechanism 3 falls to the top of the unloading mechanism 5. Simultaneously, the air dryer 7 dries the waste lithium batteries inside the supporting mechanism 3. The first electric telescopic rod 320 retracts from both ends towards the middle, generating tension on the telescopic frames 32 on both sides. When the telescopic frame 32 retracts to a certain extent, it adheres to the surface of the waste lithium battery. At this time, the first electric telescopic rod 320 continues to operate, and the telescopic frames 32 on both sides exert inward pressure on both sides of the waste lithium battery. The second electric telescopic rod 51 drives the clamping plate 52 to clamp towards the middle, and the push rod 53 located on one side of the clamping plate 52 generates a pushing force towards the middle. The push rod 53 applies pressure to both sides of the telescopic frame 32 again. Due to the excessive pressure on both sides of the telescopic frame 32, the surface of the waste lithium battery begins to crack, achieving the effect of pre-crushing. During the crushing process, the gas generated by the waste lithium battery is discharged through the exhaust pipe 10.

[0059] After the pre-crushing is completed, the waste lithium battery fragments fall through the feeding box 50 to the conveyor belt 6. The conveyor belt 6 transports the waste lithium battery fragments to one end, and the waste lithium battery fragments pass through the feeding port 14 to the next stage for further crushing.

[0060] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0061] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A wet recycling and processing device for waste lithium batteries from new energy vehicles, comprising a shell, characterized in that, A slide rail is mounted on the back of the housing, and a robotic arm is slidably connected to the top of the slide rail; The inner wall of the housing is equipped with a discharge mechanism, which discharges the residual charge in the waste lithium battery. The discharge mechanism includes a hose, and the output end of the hose is fixedly connected to a pumping module. The discharge mechanism is equipped with a support mechanism on top, which temporarily stores the pre-treated lithium battery. A telescopic frame is installed at the bottom of the support mechanism. The inner wall of the housing is equipped with a feeding mechanism, which includes a feeding box. The front and back of the feeding box are fixedly connected to the inner wall of the housing. The top and bottom of the feeding box are both open. The feeding mechanism is used to crush the battery and feed it in. An exhaust pipe is installed on the top of the housing, a control panel is installed on the front surface of the housing, a conveying pump is sleeved on the front surface of the housing, one end of the conveying pump is sleeved on the surface of the supply box, and a material conveying port is opened on one side of the housing. The discharge mechanism includes a supply box, which is installed on the bottom inner wall of the housing. A support plate is installed on the top of the supply box. The two sides of the top of the support plate are symmetrical. An aerator is installed at the center of the inner wall of the support plate. Flexible hoses are sleeved on both sides of the supply box. A pumping module is fixedly connected to one end of each flexible hose. The pumping module includes a fixed base, a plug-in block is installed on one side of the inner wall of the fixed base, and a pumping port is opened at one end of the plug-in block. CO2 is pumped through the pumping port and evenly distributed into the interior of the waste lithium battery. Multiple sets of support bars are provided at the top and bottom of the plug-in block. Multiple sets of push pins are installed at the output end of the pumping port. The push pins have grooves on their inner sides. A shell-cracking hook is installed on the inner wall of the groove. A baffle is installed on one side of the outer wall of the shell-cracking hook. The supply box is equipped with a double-headed pump. The output end of the delivery pump is fixedly connected to the surface of the double-headed pump. The input end of the hose is fixedly connected to the output end of the double-headed pump. A bidirectional cylinder is horizontally installed inside the supply box. Output shafts are installed on both the left and right output ends of the bidirectional cylinder. The fixed base is L-shaped. The plug block is made of tungsten carbide. The opening of the pump port is set at an angle. The front end of the push needle is needle-cone shaped and has a groove inside. The baffle angle is 30 degrees. The holding mechanism includes a placement box, a connecting plate fixedly connected to one side of the placement box, a telescopic frame installed at the bottom of the placement box, a fixed tray fixedly connected to one side of the placement box, the bottom of the fixed tray fitting snugly against the telescopic frame, two sets of first electric telescopic rods provided inside the telescopic frame, scraping ports installed on both sides of the telescopic frame, and multiple sets of barbs provided at the top and bottom of the scraping ports. The top opening of the feeding box is funnel-shaped, and the inner wall of the top opening of the feeding box is directly the same as the outer diameter of the fixed tray. The feeding box is fitted with a second electric telescopic rod on both sides. A clamping plate is fitted at one end of the second electric telescopic rod. The clamping plate is L-shaped, and a push rod is fixedly connected to one side of the clamping plate. One end of the push rod is installed on the outside of the telescopic frame.

2. The wet recycling and treatment device for waste lithium batteries from new energy vehicles according to claim 1, characterized in that, The placement box is configured to be plugged into the top of the tray, and the number of the holding mechanisms is set to multiple sets. The multiple sets of holding mechanisms are connected by threads through the connecting plate. The inner side of the scraper is aligned with the outer surface of the plug-in block, and the front end of the barb is bent into a hook shape.

3. The wet recycling and treatment device for waste lithium batteries from new energy vehicles according to claim 2, characterized in that, A conveyor belt is installed at the bottom of the housing. One end of the conveyor belt is located on the inner wall of the housing, and the top of the conveyor belt is aligned with the opening at the bottom of the feeding box. The other end of the conveyor belt is located on the outside of the feeding port.

4. The wet recycling and treatment device for waste lithium batteries from new energy vehicles according to claim 3, characterized in that, A dryer is installed on one side of the housing. The air intake on the back of the dryer is located on the outer wall of the housing, and the air outlet at the front of the dryer is located on the inner wall of the housing.

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