Lithium battery discharging device

Abstract

The utility model provides a lithium battery discharging device, which relates to the technical field of renewable resources and comprises a placing platform, a feeding conveying mechanism, a feeding conveying mechanism, a salt water tank and a cleaning platform which are linearly arranged along the advancing direction of materials, the conveying plane of the feeding conveying mechanism is arranged in an inclined downhill manner; the horizontal part section sinks below the liquid level of the brine tank and keeps a preset distance from the tank bottom; the lifting part section obliquely extends upwards from the interior of the salt water tank to the position over the cleaning platform, and a draining area exposed out of the liquid level is formed; and a lithium battery piercing structure is erected above the descending part section. The device can improve the discharge efficiency and the recovery efficiency of the lithium battery, and reduces the risk of harmful metal pollution in the lithium battery by discharging the lithium battery.

Description

Technical Field

[0001] This utility model relates to the field of renewable resource technology, and in particular to a lithium battery discharge device. Background Technology

[0002] In recent years, due to increasingly prominent environmental pollution and energy crises, new energy vehicles and power batteries have experienced rapid development. Power batteries include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Among them, lithium-ion batteries, with their high energy density and cycle characteristics, are hailed as the best development direction for future power batteries. With the continuous upgrading of electronic and electrical products and the increasing production and sales of new energy vehicles, the number of waste lithium batteries will inevitably increase dramatically. However, waste lithium batteries contain residual charges, and direct disposal may cause short circuits, explosions, and other hazards. Furthermore, the subsequent dismantling of these waste lithium batteries also poses safety risks. To further improve the discharge efficiency of lithium batteries and enable the simultaneous processing of large numbers of lithium batteries, ensuring the complete removal of residual charges within them, a solution is needed.

[0003] Authorization announcement number CN211350899U discloses a discharge device for waste lithium batteries. The structure and scheme for discharge involve "preparing a high-concentration brine solution in a brine mother liquor tank, which is pumped into the brine pool by a first metering pump. Water is pumped into the brine pool through an inlet pipe by a second metering pump. The two are mixed to prepare a lower-concentration brine solution for discharge. Waste lithium batteries are placed in a basket, and then the entire basket is placed into the brine pool, submerging the basket. After the lithium batteries have discharged for a certain period, the basket is lifted, and the lithium batteries are dried or de-dried before being replaced with the next batch." In other words, a basket-based method is used to remove and place waste lithium batteries in a brine pool for soaking and then drying. However, this structure has significant technological bottlenecks: its basket-based batch processing requires frequent immersion, lifting, and drying processes, resulting in a long processing cycle and slow efficiency, making it difficult to meet the daily processing needs of thousands of battery sets in large-scale recycling scenarios. In other words, the existing technology still has technical defects that require improvement. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art and provides a lithium battery discharge device that helps improve working efficiency and reduce the risk of harmful metal contamination inside lithium batteries.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A lithium battery discharge device includes a placement platform, a feeding conveyor, a conveying mechanism, a brine tank, and a cleaning platform arranged linearly along the material travel direction.

[0007] The feeding and conveying mechanism includes the following three continuous conveying sections, wherein:

[0008] The descending section connects to the end of the feed conveyor mechanism, and its conveying plane is arranged on a downward slope.

[0009] The horizontal section is submerged below the surface of the brine tank and maintains a preset distance from the bottom of the tank.

[0010] The lifting section extends upwards from inside the brine tank to directly above the cleaning platform, forming a drainage area exposed on the liquid surface;

[0011] A lithium battery puncture structure is installed above the descending section.

[0012] Furthermore, the placement platform extends laterally with a material storage area, and its bottom is fixed to the ground by a support frame. The platform is equipped with a three-axis robot arm for laterally transferring lithium batteries to the feeding conveyor mechanism.

[0013] Furthermore, the feeding conveyor adopts a belt conveyor, and the material conveying mechanism adopts a corrosion-resistant roller conveyor, with the two achieving speed synchronization through a servo motor.

[0014] Furthermore, the lithium battery puncture structure includes several parallel processing stations, each station being configured with:

[0015] A baffle plate is used to position the lithium battery.

[0016] The cylinder drives the needle to penetrate the lithium battery casing vertically, with the cylinder and the baffle plate positioned opposite each other.

[0017] The permeation pores have a diameter of 3-5 mm and are located above the brine tank.

[0018] Furthermore, the length L1 of the feeding conveyor mechanism is 8900±100mm, and the installation height H1 is 1250±50mm; the dimensions of each section of the feeding conveyor mechanism meet the following requirements:

[0019] The total length of the descending section and the horizontal section is L2 = 27500 ± 500 mm;

[0020] The length of the lifting section L3 is 8500±500mm, and the height of the end section H2 is 4500±500mm;

[0021] The height h of the upper surface of the horizontal section from the upper edge of the brine tank is 500±100mm.

[0022] Furthermore, the cleaning platform is equipped with high-pressure swirling spray pipes on both sides, with a spray angle of 30~45°, water pressure of 0.5~1.2MPa, and rinsing time of ≥15min.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] This invention improves the discharge and recycling efficiency of lithium batteries by arranging the placement platform, feeding conveyor, conveying mechanism, brine tank, and cleaning platform linearly along the material travel direction. Soaking a large number of lithium batteries in brine ensures complete discharge, thus improving discharge efficiency. Discharging the lithium batteries facilitates a smoother recycling process, increasing recycling efficiency. Furthermore, discharging the lithium batteries reduces the risk of harmful metal contamination within the batteries. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of a lithium battery discharge device viewed from above.

[0027] Figure 2 This is a schematic diagram of the lithium battery discharge device viewed from the side.

[0028] Figure 3 This is a schematic diagram of the infeed conveyor and the feeding conveyor.

[0029] Figure 4 This is a top view of the punctured structure of a lithium battery.

[0030] In the picture:

[0031] 1. Placement platform; 2. Feeding conveyor mechanism; 3. Feeding conveyor mechanism; 301. Lowering section; 302. Horizontal section; 303. Lifting section; 4. Brine tank; 5. Cleaning platform; 6. Lithium battery puncture structure; 601. Cylinder; 602. Baffle plate; 603. Needle; 7. Support frame; 8. Three-axis robot; 9. High-pressure cyclone spray pipe. Detailed Implementation

[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0033] like Figures 1 to 4As shown, this utility model claims protection for a lithium battery discharge device, including a placement platform 1, an infeed conveying mechanism 2, a feeding conveying mechanism 3, a brine tank 4, and a cleaning platform 5 arranged linearly along the material travel direction. The bottom of the placement platform 1 is fixed to the ground by a support frame 7, and the placement platform 1 has a material storage area extending laterally. The infeed conveying mechanism 2 is placed in the middle of the placement platform 1. A three-axis robot 8 is provided on the material storage area of ​​the placement platform 1. The material storage area can hold lithium batteries that need to be processed. The workers will classify or adjust the placement of the lithium batteries on the placement platform 1, and then the three-axis robot 8 will be used to laterally transfer the lithium batteries in the material storage area to the infeed conveying mechanism 2 and transport them forward.

[0034] The feeding and conveying mechanism 3 includes the following three continuous conveying sections, wherein:

[0035] The descending section 301 of the feeding conveyor 3 is connected to the end of the infeed conveyor 2, and its conveying plane is arranged in a downward slope; a lithium battery piercing structure 6 is erected above the descending section 301, combined with... Figure 4 See, the lithium battery piercing structure 6 includes several parallel processing stations. Each station is equipped with a cylinder 601 and a baffle plate 602 for positioning the lithium battery. The cylinder 601 and the baffle plate 602 are arranged opposite to each other. After the lithium battery is placed between the cylinder 601 and the baffle plate 602, the cylinder 601 drives the piercing needle 603 to vertically penetrate the lithium battery casing. Each station has a penetration hole corresponding to the part where the lithium battery is placed. The diameter of the penetration hole is 3~5mm. The penetration hole is located above the brine tank 4. The electrolyte will fall into the brine tank 4 through the penetration hole and will not cause dirt to the outside.

[0036] The horizontal section 302 of the feeding and conveying mechanism 3 is submerged below the surface of the brine tank 4 and maintains a preset distance from the bottom of the tank. The punctured lithium battery is placed on the descending section 301 and conveyed into the brine tank 4. The brine tank 4 immerses the punctured lithium battery in brine for a long time to ensure that the lithium battery is completely discharged in the brine tank.

[0037] The salt concentration in the brine tank 4 is 5-10%. Too high a salt concentration can damage the internal structure of the lithium battery, while too low a salt concentration can reduce the discharge efficiency of the lithium battery. Therefore, it is advisable to select a concentration within the above range.

[0038] The lifting section 303 of the feeding and conveying mechanism 3 extends upward from inside the brine tank 4 to directly above the washing platform 5, forming a drainage area exposed on the liquid surface; the soaked lithium batteries are transported upward from the lifting section 303.

[0039] In this embodiment, the feeding and conveying mechanism 3 adopts a corrosion-resistant roller conveyor with gaps between the rollers, which helps the lithium battery to drain in the drainage area formed by the lifting section 303.

[0040] The feeding conveyor 2 adopts a belt conveyor, which is conducive to smooth transportation; the feeding conveyor 3 and the feeding conveyor 2 are synchronized in speed and used in coordination through a servo motor.

[0041] The length L1 of the feeding conveyor 2 is 8900±100mm, and the installation height H1 is 1250±50mm; the dimensions of each section of the feeding conveyor 3 meet the following requirements:

[0042] The total length L2 of the descending section 301 and the horizontal section 302 is 27500±500mm;

[0043] The length of the lifting section 303 is L3=8500±500mm, and the end height is H2=4500±500mm;

[0044] The height h of the upper surface of the horizontal section 302 from the upper edge of the brine tank 4 is 500±100mm.

[0045] Preferably, in this embodiment, the length L1 of the feeding conveyor 2 is 8923mm and the installation height H1 is 1226mm; the dimensions of each section of the feeding conveyor 3 satisfy:

[0046] The total length L2 of the descending segment 301 and the horizontal segment 302 is 27399 mm;

[0047] The length of the lifting section 303 is L3=8559mm, and the end height is H2=4661mm;

[0048] The height h of the upper surface of the horizontal section 302 from the upper edge of the brine tank 4 is 500mm.

[0049] Finally, the lithium battery is conveyed down to the cleaning platform 5 by the lifting section 303. The cleaning platform 5 is equipped with high-pressure swirling spray pipes 9 on both sides, with a spray angle of 30~45°, water pressure of 0.5~1.2MPa, and rinsing time of ≥15min, to rinse and soak the lithium battery for a long time, diluting and removing NaCl on the surface of the lithium battery.

[0050] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, 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 battery discharge device, characterized by: It includes a placement platform (1) arranged linearly along the material travel direction, an infeed conveyor mechanism (2), a feeding conveyor mechanism (3), a brine tank (4), and a cleaning platform (5): The feeding and conveying mechanism (3) includes the following three continuous conveying sections, wherein: The descending section (301) is connected to the end of the feeding conveyor (2), and its conveying plane is arranged in an inclined downward slope; The horizontal section (302) is submerged below the surface of the brine tank (4) and maintains a preset distance from the bottom of the tank; The lifting section (303) extends upward from inside the brine tank (4) to directly above the cleaning platform (5), forming a drainage area exposed on the liquid surface; A lithium battery piercing structure (6) is erected above the descending section (301); The placement platform (1) has a material storage area that extends laterally. Its bottom is fixed to the ground by a support frame (7). The placement platform (1) is equipped with a three-axis robot (8) for laterally transferring lithium batteries to the feeding conveyor (2). The feeding conveyor (2) adopts a belt conveyor, and the feeding conveyor (3) adopts a corrosion-resistant roller conveyor. The two are synchronized in speed by a servo motor. The lithium battery puncture structure (6) includes several parallel processing stations, each station being configured with: The baffle plate (602) is used to position the lithium battery; The cylinder (601) drives the needle (603) to penetrate the lithium battery casing vertically, and the cylinder (601) and the baffle plate (602) are arranged opposite to each other; The permeation holes have a diameter of 3~5mm and are located above the brine tank (4). The length L1 of the feeding conveyor (2) is 8900±100mm and the installation height H1 is 1250±50mm; the dimensions of each section of the feeding conveyor (3) meet the following requirements: The total length L2 of the descending section (301) and the horizontal section (302) is 27500±500mm; The length of the lifting section (303) is L3=8500±500mm, and the end height is H2=4500±500mm; The height h of the upper surface of the horizontal section (302) from the upper edge of the brine tank (4) (400) is 500±100mm; The cleaning platform (5) is equipped with high-pressure swirling spray pipes (9) on both sides.

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