Lithium ion battery electrolyte recycling device

Abstract

The utility model discloses a recycling device for electrolyte of a lithium ion battery. The recycling device comprises a recycling box and a suction cylinder, the lithium ion battery electrolyte recycling device has the beneficial effects that the filter cylinder and the driving motor are adopted, when the lithium ion battery electrolyte is recycled, the input end is communicated with the electrolytic tank, the electric cylinder is shortened to pull the piston to move upwards, the internal pressure of the suction cylinder is reduced under the action of atmospheric pressure, the electrolyte in the electrolytic tank enters the suction cylinder through the input pipe, then the electric cylinder extends, and the electrolyte in the electrolytic tank enters the suction cylinder; electrolyte is pressed out of an inflow pipe and enters a filter cylinder by increasing the air pressure in a suction cylinder, a driving motor drives the filter cylinder to rotate at a high speed through a main shaft, impurities in the electrolyte are filtered and recycled, the electrolyte is thrown out of the filter cylinder, the impurities stay in the filter cylinder, and the electrolyte is collected along an inclined plate, falls down, penetrates through a leakage hole and enters the position below the inclined plate. According to the device, through the centrifugal filtration effect of the filter cartridge, the cleanliness of the recycled electrolyte is improved, the centrifugal filtration speed is high, the working efficiency is high, and the recycling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery production technology, and more specifically, to a lithium-ion battery electrolyte recycling device. Background Technology

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental conditions. With the development of science and technology, lithium batteries have become mainstream. Lithium batteries can be broadly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable.

[0003] After searching, it was found that application number CN202210233745.7, entitled "A Quantitative Dropping Device for Lithium-ion Battery Electrolyte," utilizes a recovery pump to recover the electrolyte and inject it into a collection tank for easy recycling. However, this direct recovery method has the following problems: First, impurities are easily generated in the electrolyte during electrolysis, and these impurities affect the subsequent electrolysis effect when directly recycled. Second, the recovery pump uses the high-speed rotation of the impeller in the impeller chamber to create negative pressure for suction. When the electrolyte enters the impeller chamber, it collides with the impeller and is subjected to high-speed shearing and agitation. Organic solvents in lithium batteries are prone to generating bubbles, affecting stability. Further improvements can be made.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a lithium-ion battery electrolyte recycling device, which has the advantages of improved recycling and reuse efficiency, simpler structure, and extended service life, thereby solving the problems mentioned in the background technology.

[0006] To achieve the aforementioned advantages of improved recycling and reuse efficiency, simpler structure, and extended service life, the specific technical solution adopted by this utility model is as follows:

[0007] A lithium-ion battery electrolyte recycling device includes a recycling tank and a suction cylinder. The suction cylinder is fixedly mounted on the top surface of the recycling tank, and an electric cylinder is fixedly installed on the top surface of the suction cylinder. The moving rod of the electric cylinder passes through the suction cylinder and extends into the suction cylinder. A piston is fixedly connected to the other end of the moving rod of the electric cylinder. An inclined plate is fixedly installed inside the recycling tank. A leakage hole is opened at one end of the bottom surface of the inclined plate, and a drive motor is fixedly installed on the bottom surface of the inclined plate. A main shaft is installed at the output end of the drive motor, and a filter cartridge is fixedly connected to the other end of the main shaft. An inflow pipe is connected through the bottom surface of the suction cylinder and extends into the inside of the filter cartridge. A first one-way end cap is connected through the bottom surface of the inflow pipe. An input pipe is connected through the bottom surface of the suction cylinder, and the top opening of the input pipe extends into the suction cylinder. A second one-way end cap is connected through the top surface of the input pipe. An output pipe is connected through the top surface of the recycling tank and passes through the inclined plate and extends to the bottom of the recycling tank.

[0008] Furthermore, the first unidirectional end cap and the second unidirectional end cap have the same structure, and the first unidirectional end cap and the second unidirectional end cap are installed in opposite directions. The first unidirectional end cap includes a through box, a sealing plate, a sealing gasket, and a torsion spring. The sealing gasket is fixedly bonded to the surface of the sealing plate, and one end of the sealing plate is rotatably connected to the surface of the through box through the torsion spring. The sealing gasket abuts against the bottom of the inflow pipe and the top of the input pipe, respectively.

[0009] Furthermore, the main shaft is rotatably connected to the inclined plate via a sealed bearing, and the surface of the inclined plate is polished.

[0010] Furthermore, the other end of the input pipe is connected to the bottom of the electrolytic cell, and the top opening of the input pipe is higher than the top opening of the inflow pipe, and the input pipe is sealed to the bottom surface of the suction cylinder.

[0011] Furthermore, the other end of the output pipe is connected to an electrolyte suction device, and the output pipe is sealed to the top surface of the recovery tank.

[0012] Furthermore, the recycling bin has a cleaning door hinged above the inclined plate on the front facade corresponding to the filter cartridge position, and the cleaning door is a sealed door.

[0013] Furthermore, multiple sets of torsion springs are arranged, and the two ends of the torsion springs are respectively fixedly connected to the sealing plate and the side wall of the through box.

[0014] Furthermore, the filter cartridge surface is densely covered with filter holes, and the filter cartridge and the main shaft are arranged coaxially.

[0015] Compared with the prior art, this utility model provides a lithium-ion battery electrolyte recycling device, which has the following beneficial effects:

[0016] (1) This utility model uses a filter cartridge and a drive motor. When recycling lithium-ion battery electrolyte, the input end is connected to the electrolytic cell, the electric cylinder shortens and pulls the piston upward, thereby reducing the internal pressure of the suction cylinder through atmospheric pressure. The electrolyte in the electrolytic cell enters the suction cylinder through the input pipe. Then, the electric cylinder extends and increases the internal air pressure of the suction cylinder to push the electrolyte into the filter cartridge through the inlet pipe. The drive motor drives the filter cartridge to rotate at high speed through the main shaft, filtering and recycling impurities in the electrolyte. The electrolyte is thrown out of the filter cartridge, and the impurities remain in the filter cartridge. The electrolyte collects along the inclined plate and falls through the leakage hole, entering the area below the inclined plate to complete the collection. The other end of the output pipe is connected to the electrolyte suction equipment, which can complete the recycling. This device improves the cleanliness of the recycled electrolyte through the centrifugal filtration effect of the filter cartridge. The centrifugal filtration speed is fast and the working efficiency is high, which improves the recycling efficiency.

[0017] (2) This utility model adopts a first one-way end cap and a second one-way end cap. The installation directions of the first one-way end cap and the second one-way end cap are opposite. When the suction cylinder draws up the electrolyte, the sealing plate of the second one-way end cap opens along the torsion spring. The torsion spring generates elastic potential energy. When the electric cylinder stops shortening, the torsion spring rebounds and pushes the sealing plate to close the top opening of the input pipe. When the suction cylinder discharges the electrolyte, the electric cylinder extends and the sealing plate on the bottom surface of the first one-way end cap opens along the torsion spring, so that the electrolyte can be discharged. After the electrolyte is discharged, the torsion spring rebounds and closes the bottom opening of the inflow pipe. The sealing plate is fixedly pasted with a sealing gasket. The sealing gasket is made of corrosion-resistant rubber material, which avoids electrolyte erosion and extends service life. The suction process is stable and avoids the problem of electrolyte bubbles caused by the rapid rotation of the impeller when using a traditional recovery pump for electrolyte pumping. It is more stable and reliable. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the lithium-ion battery electrolyte recycling device proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the external structure of the lithium-ion battery electrolyte recycling device proposed in this utility model from its front elevation.

[0021] Figure 3 This is a schematic diagram of the external structure of the lithium-ion battery electrolyte recycling device proposed in this utility model from the rear elevation.

[0022] Figure 4This is a schematic diagram of the structure of the first unidirectional end cap proposed in this utility model.

[0023] In the picture:

[0024] 1. Recycling bin; 2. Inclined plate; 3. Drive motor; 4. Filter cartridge; 5. Main shaft; 6. Leakage hole; 7. Output pipe; 8. Inflow pipe; 9. First one-way end cap; 10. Suction cylinder; 11. Piston; 12. Input pipe; 13. Second one-way end cap; 14. Electric cylinder; 15. Cleaning door; 16. Through box; 17. Sealing plate; 18. Sealing gasket; 19. Torsion spring. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present invention, a lithium-ion battery electrolyte recycling device is provided.

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, the lithium-ion battery electrolyte recycling device according to an embodiment of the present invention includes a recycling tank 1 and a suction cylinder 10. The suction cylinder 10 is fixedly mounted on the top surface of the recycling tank 1, and an electric cylinder 14 is fixedly installed on the top surface of the suction cylinder 10. The moving rod of the electric cylinder 14 passes through the suction cylinder 10 and extends into the interior of the suction cylinder 10. A piston 11 is fixedly connected to the other end of the moving rod of the electric cylinder 14. The piston 11 slides against the inner wall of the suction cylinder 10. An inclined plate 2 is fixedly installed inside the recycling tank 1, and the bottom surface of the inclined plate 2... A leakage hole 6 is provided at one end, and a drive motor 3 is fixedly installed on the bottom surface of the inclined plate 2. A main shaft 5 is installed at the output end of the drive motor 3, and a filter cartridge 4 is fixedly connected to the other end of the main shaft 5. An inflow pipe 8 is connected through the bottom surface of the suction cylinder 10, and the inflow pipe 8 extends to the inside of the filter cartridge 4. A first one-way end cap 9 is connected through the bottom surface of the inflow pipe 8. An input pipe 12 is connected through the bottom surface of the suction cylinder 10, and the top opening of the input pipe 12 extends into the inside of the suction cylinder 10. A second one-way end cap 1 is connected through the top surface of the input pipe 12. 3. An output pipe 7 is connected to the top surface of the recycling box 1, and the output pipe 7 passes through the inclined plate 2 and extends to the bottom of the recycling box 1. When recycling lithium-ion battery electrolyte, the input end is connected to the electrolytic cell, the electric cylinder 14 shortens and pulls the piston 11 upward, thereby reducing the internal pressure of the suction cylinder 10 through atmospheric pressure. The electrolyte in the electrolytic cell enters the suction cylinder 10 through the input pipe 12. Subsequently, the electric cylinder 14 extends, and by increasing the air pressure inside the suction cylinder 10, the electrolyte is pumped into the inlet pipe 8 and into the filter cartridge. Inside the filter cartridge 4, the drive motor 3 drives the filter cartridge 4 to rotate at high speed through the main shaft 5, filtering and recovering impurities in the electrolyte. The electrolyte is thrown out of the filter cartridge 4, while the impurities remain in the filter cartridge 4. The electrolyte collects along the inclined plate 2, falls through the leakage hole 6, and enters below the inclined plate 2 to complete the collection. The other end of the output pipe 7 is connected to the electrolyte suction device, which can complete the recycling. This device improves the cleanliness of the recovered electrolyte through the centrifugal filtration effect of the filter cartridge 4. The centrifugal filtration speed is fast, the working efficiency is high, and the recycling efficiency is improved.

[0028] In one embodiment, the first one-way end cap 9 and the second one-way end cap 13 have the same structure, but are installed in opposite directions. The first one-way end cap 9 includes a through box 16, a sealing plate 17, a sealing gasket 18, and a torsion spring 19. The sealing gasket 18 is fixedly bonded to the surface of the sealing plate 17, and one end of the sealing plate 17 is rotatably connected to the surface of the through box 16 via the torsion spring 19. The sealing gasket 18 abuts against the bottom opening of the inflow pipe 8 and the top opening of the input pipe 12, respectively. Multiple sets of torsion springs 19 are arranged, and both ends of the torsion springs 19 are fixedly connected to the side walls of the sealing plate 17 and the through box 16, respectively. The sealing plate 17 of the first one-way end cap 9 is located below the through box 16 of the first one-way end cap 9, and the sealing plate 17 of the second one-way end cap 13 is located above the through box 16 of the second one-way end cap 13. The top surface of the through box 16 of the first one-way end cap 9 is connected to the bottom opening of the inflow pipe 8. The bottom surface of the through box 16 of the second one-way head 13 is connected to the top opening of the input pipe 12. When the suction cylinder 10 draws in the electrolyte, the sealing plate 17 of the second one-way head 13 opens along the torsion spring 19. The torsion spring 19 generates elastic potential energy. When the electric cylinder 14 stops shortening, the torsion spring 19 rebounds, pushing the sealing plate 17 to close the top opening of the input pipe 12. When the suction cylinder 10 discharges the electrolyte, the electric cylinder 14 extends, and the sealing plate 17 on the bottom surface of the first one-way head 9 opens along the torsion spring 19, allowing the electrolyte to be discharged. After the electrolyte is discharged, the torsion spring 19 rebounds to close the bottom opening of the inflow pipe 8. Sealing gaskets 18 are fixedly pasted on the surface of the sealing plate 17. The sealing gaskets 18 are made of corrosion-resistant rubber material, which avoids electrolyte erosion, extends service life, and ensures stable suction. This avoids the problem of electrolyte bubbles caused by the rapid rotation of the impeller when using a traditional recovery pump for electrolyte pumping, making it more stable and reliable.

[0029] In one embodiment, the spindle 5 is rotatably connected to the inclined plate 2 via a sealed bearing, and the surface of the inclined plate 2 is polished to facilitate the sliding of electrolyte.

[0030] In one embodiment, the other end of the input pipe 12 is connected to the bottom of the electrolytic cell, and the top opening of the input pipe 12 is higher than the top opening of the inflow pipe 8. The input pipe 12 is sealed to the bottom surface of the suction cylinder 10 to prevent air leakage and ensure sealing performance.

[0031] In one embodiment, the other end of the output pipe 7 is connected to an electrolyte suction device, and the output pipe 7 is sealed to the top surface of the recovery box 1 to prevent air leakage and ensure sealing performance.

[0032] In one embodiment, the cleaning door 15 is hinged above the inclined plate 2 on the front of the recycling bin 1, corresponding to the position of the filter cartridge 4. The cleaning door 15 is a sealed door, which facilitates the cleaning of impurities by the staff.

[0033] In one embodiment, the filter cartridge 4 is densely perforated on its surface, and the filter cartridge 4 and the main shaft 5 are arranged coaxially to improve the stability of the rotation of the filter cartridge 4.

[0034] Working principle:

[0035] When recycling lithium-ion battery electrolyte, the input end is connected to the electrolytic cell. The electric cylinder 14 shortens, pulling the piston 11 upward. This reduces the internal pressure of the suction cylinder 10 through atmospheric pressure. The electrolyte in the electrolytic cell enters the suction cylinder 10 through the input pipe 12. Subsequently, the electric cylinder 14 extends, increasing the internal air pressure of the suction cylinder 10 to force the electrolyte to flow into the filter cylinder 4 through the inlet pipe 8. The drive motor 3 drives the filter cylinder 4 to rotate at high speed through the main shaft 5, filtering and recovering impurities in the electrolyte. The electrolyte is thrown out of the filter cylinder 4, while the impurities remain in the filter cylinder 4. The electrolyte collects along the inclined plate 2, falls through the drain hole 6, and enters below the inclined plate 2, completing the collection. The other end of the output pipe 7 is connected to the electrolyte suction equipment, thus completing the recycling. This device improves the cleanliness of the recovered electrolyte through the centrifugal filtration effect of the filter cylinder 4. The centrifugal filtration speed is fast, the working efficiency is high, and the efficiency is improved. The recycling efficiency is improved. Meanwhile, the first one-way end cap 9 and the second one-way end cap 13 are installed in opposite directions. When the suction cylinder 10 draws in the electrolyte, the sealing plate 17 of the second one-way end cap 13 opens along the torsion spring 19. The torsion spring 19 generates elastic potential energy. When the electric cylinder 14 stops shortening, the torsion spring 19 rebounds, pushing the sealing plate 17 to close the top opening of the input pipe 12. When the suction cylinder 10 discharges the electrolyte, the electric cylinder 14 extends, and the sealing plate 17 on the bottom surface of the first one-way end cap 9 opens along the torsion spring 19, allowing the electrolyte to be discharged. After the electrolyte is discharged, the torsion spring 19 rebounds to close the bottom opening of the inflow pipe 8. Sealing gaskets 18 are fixedly pasted onto the surface of the sealing plate 17. The sealing gaskets 18 are made of corrosion-resistant rubber, preventing electrolyte erosion and extending service life. The suction process is stable, avoiding the electrolyte bubble problem caused by the rapid rotation of the impeller when using a traditional recycling pump for electrolyte pumping, making it more stable and reliable.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., 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 connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., 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 lithium-ion battery electrolyte recycling device, characterized in that, The system includes a recycling bin (1) and a suction cylinder (10). The suction cylinder (10) is fixedly mounted on the top surface of the recycling bin (1), and an electric cylinder (14) is fixedly installed on the top surface of the suction cylinder (10). The moving rod of the electric cylinder (14) passes through the suction cylinder (10) and extends into the inside of the suction cylinder (10). A piston (11) is fixedly connected to the other end of the moving rod of the electric cylinder (14). An inclined plate (2) is fixedly installed inside the recycling bin (1), and a drain hole (6) is opened at one end of the bottom surface of the inclined plate (2). A drive motor (3) is fixedly installed on the bottom surface of the inclined plate (2), and a main shaft (5) is installed at the output end of the drive motor (3). The other end of the main shaft (5) is fixedly connected to a filter cylinder (4). The bottom surface of the suction cylinder (10) is connected to an inflow pipe (8), which extends to the inside of the filter cylinder (4). The bottom surface of the inflow pipe (8) is connected to a first one-way end cap (9). The bottom surface of the suction cylinder (10) is connected to an input pipe (12), which extends to the inside of the suction cylinder (10). The top surface of the input pipe (12) is connected to a second one-way end cap (13). The top surface of the recycling box (1) is connected to an output pipe (7), which passes through the inclined plate (2) and extends to the bottom of the recycling box (1).

2. The lithium-ion battery electrolyte recycling device according to claim 1, characterized in that, The first one-way end cap (9) and the second one-way end cap (13) have the same structure, and the first one-way end cap (9) and the second one-way end cap (13) are installed in opposite directions. The first one-way end cap (9) includes a through box (16), a sealing plate (17), a sealing gasket (18) and a torsion spring (19). The sealing gasket (18) is fixedly bonded to the surface of the sealing plate (17), and one end of the sealing plate (17) is rotatably connected to the surface of the through box (16) through the torsion spring (19). The sealing gasket (18) abuts against the bottom of the inflow pipe (8) and the top of the input pipe (12) respectively.

3. The lithium-ion battery electrolyte recycling device according to claim 1, characterized in that, The main shaft (5) is rotatably connected to the inclined plate (2) through a sealed bearing, and the surface of the inclined plate (2) is polished.

4. The lithium-ion battery electrolyte recycling device according to claim 1, characterized in that, The other end of the input pipe (12) is connected to the bottom of the electrolytic cell, and the top opening of the input pipe (12) is higher than the top opening of the inflow pipe (8), and the input pipe (12) is sealed to the bottom surface of the suction cylinder (10).

5. The lithium-ion battery electrolyte recycling device according to claim 1, characterized in that, The other end of the output pipe (7) is connected to the electrolyte suction device, and the output pipe (7) is sealed to the top surface of the recovery box (1).

6. The lithium-ion battery electrolyte recycling device according to claim 1, characterized in that, The recycling bin (1) is hinged to the filter cartridge (4) on the front side above the inclined plate (2) with a cleaning door (15), and the cleaning door (15) is a sealed door.

7. The lithium-ion battery electrolyte recycling device according to claim 2, characterized in that, The torsion springs (19) are arranged in multiple sets, and the two ends of the torsion springs (19) are fixedly connected to the side walls of the sealing plate (17) and the through box (16), respectively.

8. The lithium-ion battery electrolyte recycling device according to claim 1, characterized in that, The filter cartridge (4) has densely packed filter holes on its surface, and the filter cartridge (4) and the main shaft (5) are arranged coaxially.

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