Electrified crushing system of lithium battery

Abstract

The electrified crushing system comprises a chain scraper conveyor, a feeding device is arranged at the front end of the chain scraper conveyor, the tail end of the chain scraper conveyor is connected with an anaerobic feeding machine, a feeding port of the anaerobic feeding machine is communicated with the tail end of the chain scraper conveyor, and a discharging port of the anaerobic feeding machine is communicated with the tail end of the chain scraper conveyor. And a discharge hole in the bottom of the anaerobic feeder is connected with a feed hole in the top of the primary crusher through a disc feeder. The electrified crushing system of the lithium battery works under the electrified condition, continuous and uniform crushing is guaranteed, the working efficiency is improved, it is guaranteed that electrolyte cannot be generated in a concentrated mode, oxygen feeding can be isolated, water is prevented from entering the system, and it is guaranteed that impurities in powder screened in the later procedure are few.

Description

Technical Field

[0001] This invention relates to a charged crushing system for lithium batteries. Background Technology

[0002] With the rapid development of the new energy industry, a wave of lithium battery retirements is quietly approaching. How to efficiently and environmentally recycle the electrode materials from used batteries has become an urgent problem for the industry to solve.

[0003] Current lithium battery-powered crushing systems have several problems: 1. The feeding structure during lithium battery crushing and recycling typically uses a dual gate valve feeding method. However, this feeding method allows different lithium batteries to enter the same cavity, which can easily lead to short circuits between the positive and negative electrodes and the concentrated generation of electrolyte, thus posing a safety hazard.

[0004] 2. Previous feeding structures could not be operated under power, which could not guarantee continuous and uniform crushing.

[0005] 3. Air and water can easily enter the cavity of the feeding mechanism, resulting in a higher content of impurities in the recovered powder, requiring multiple screenings. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a safe, reliable, efficient, and pollution-free lithium battery crushing system.

[0007] The objective of this invention is achieved as follows: A lithium battery charged crushing system includes a chain conveyor, the front end of which is a feeding device, and the end of which is connected to an oxygen-free feeder. The feed inlet of the oxygen-free feeder is connected to the end of the chain conveyor, and the oxygen-free feeder includes a box body. The housing consists of a rotor, side housings, and an outer housing. The outer housing is annular. There are two side housings, which are fixed to the two sides of the outer housing respectively. The front end of the rotor passes through the side housings and the end is connected to the drive motor. Multiple partitions are evenly installed on the outside of the rotor, dividing the outside of the rotor into equal parts. The partitions, side housings, and outer housing form multiple cavities, each of which can hold a lithium battery. The inner walls of the partitions, side housings, and outer housing are embedded with rubber plates. The bottom of the outer housing is connected to the discharge port. The outer casing is also provided with multiple nitrogen inlets and air outlets, which are connected to external nitrogen pipes and exhaust pipes, respectively. The bottom discharge port of the oxygen-free feeder is connected to the top feed port of the primary crusher via a disc feeder. The bottom of the primary crusher is connected to the top of the secondary crusher via a detachable flange. Both the primary and secondary crushers are equipped with multiple cutter discs arranged longitudinally side by side. Multiple grooves are formed on the outer edge of the cutter teeth. A motor is installed on each of the two sides of the primary and secondary crushers. The output shaft of the motor passes through the outer wall of the crusher and is connected to each cutter disc. In the parallel arrangement of cutter discs, the odd-numbered cutter discs are driven by the motor on the left, and the even-numbered cutter discs are driven by the motor on the right. The odd-numbered and even-numbered cutter discs rotate in opposite directions. The bottom of the secondary crusher is equipped with a star-shaped discharge port.

[0008] A temperature sensor and a flame detector are installed above the discharge port, and an explosion-proof valve is installed in the pipeline where the inlet is located.

[0009] The feeding device is equipped with a weighing module.

[0010] The feed inlet is funnel-shaped.

[0011] The primary and secondary crushers are also connected to external nitrogen pipelines.

[0012] Compared with the prior art, the beneficial effects of the present invention are: This invention relates to a live-charged crushing system for lithium batteries. By incorporating an oxygen-free feeder, the system operates under energized conditions, ensuring continuous and uniform crushing and improving work efficiency. The rotating rotor allows individual lithium batteries to enter a single cavity, preventing short circuits between the positive and negative terminals of different batteries. As the internal rotor rotates, the lithium batteries within each cavity are sequentially discharged from the discharge port and enter the next stage of the crushing system, ensuring even material distribution to the next process and preventing electrolyte concentration. Simultaneously, the equipment has multiple internal cavities. After the lithium batteries are fed in, the cavities remove any air and inject nitrogen, effectively isolating oxygen intake and preventing water ingress, thus minimizing impurities in the powder after subsequent screening. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the charged crushing system for lithium batteries according to the present invention.

[0014] Figure 2 for Figure 1 Structural diagram of the oxygen-free feeder.

[0015] Figure 3 This is a side view of the oxygen-free feeder.

[0016] Figure 4 This is a cross-sectional view of an oxygen-free feeder.

[0017] Figure 5This is a schematic diagram of the cutter head, cutter teeth, and grooves.

[0018] The components include: chain conveyor 1, feeding device 1.1, oxygen-free feeder 2, feed inlet 2.1, housing 2.2, rotor 2.3, side housing 2.4, outer housing 2.5, drive motor 2.6, partition 2.7, cavity 2.8, discharge port 2.9, nitrogen charging inlet 2.10, air exhaust outlet 2.11, temperature sensor 2.12, flame detector 2.13, explosion-proof valve 2.14, disc feeder 3, primary crusher 4, feed inlet 4.1, secondary crusher 5, detachable flange 6, cutter head 7, cutter teeth 8, groove 9, motor 10, nitrogen pipeline 11, and star-shaped discharge port 12. Detailed Implementation

[0019] See Figures 1 to 5 This invention relates to a charged crushing system for lithium batteries, comprising a chain conveyor 1, an oxygen-free feeder 2, a primary crusher 3, a secondary crusher 4, and a screw feeder 5.

[0020] The front end of the chain conveyor 1 is a feeding device 1.1, which is equipped with a weighing module. Waste lithium batteries are placed in the feeding device 1.1 and then conveyed backwards via the chain conveyor 1. The end of the chain conveyor 1 is connected to an oxygen-free feeder 2, and the feed inlet 2.1 of the oxygen-free feeder 2 is connected to the end of the chain conveyor 1. The oxygen-free feeder 2 includes a housing 2.2.

[0021] The housing 2.2 consists of a rotor 2.3, side housings 2.4, and an outer housing 2.5. The outer housing 2.5 is annular. There are two side housings 2.4, which are fixed to the two sides of the outer housing 2.5 respectively. The front end of the rotor 2.3 passes through the side housing 2.4, and the end is connected to the drive motor 2.6. Multiple partitions 2.7 are evenly installed on the outside of the rotor 2.3, dividing the outside of the rotor 2.3. The partitions 2.7, side housings 2.4, and outer housing 2.5 form multiple cavities 2.8, each of which can hold a lithium battery. The inner walls of the partitions 2.7, side housings 2.4, and outer housing 2.5 are embedded with rubber plates for protection. The bottom of the outer housing 2.5 is connected to the discharge port 2.9, which is used to individually send the lithium batteries in each cavity 2.8 to the next process.

[0022] The outer casing 2.5 is also provided with multiple nitrogen inlets 2.10 and air outlets 2.11. The nitrogen inlets 2.10 and air outlets 2.11 are connected to external nitrogen pipes and exhaust pipes, respectively, for introducing nitrogen for protection and for discharging excess air. A temperature sensor 2.12 and a flame detector 2.13 are installed above the discharge port 2.9 for detecting temperature and flame. An explosion-proof valve 2.14 is installed in the pipe where the feed inlet 2.1 is located, which provides explosion protection.

[0023] The oxygen-free feeder is used to isolate oxygen during feeding. As the rotor rotates, individual lithium batteries can enter a single cavity, avoiding short circuits between the positive and negative terminals of different batteries. The equipment has multiple internal chambers; after the lithium batteries are fed in, the first chamber removes any air introduced, while the second chamber is filled with nitrogen to further isolate them from air. As the internal rotor rotates, the lithium batteries inside each chamber are sequentially discharged from the discharge port into the next stage of the crushing system, ensuring even material distribution to the next process and preventing safety hazards.

[0024] The bottom discharge port of the oxygen-free feeder 2 is connected to the top feed port 4.1 of the primary crusher 4 via a disc feeder 3. The feed port 4.1 is funnel-shaped, allowing the lithium battery to fall into the middle area of ​​the primary crusher 4, thereby improving the crushing effect. The bottom of the primary crusher 4 is connected to the top of the secondary crusher 5 via a detachable flange 6, which allows for easy cleaning of the interiors of both the primary crusher 4 and the secondary crusher 5 after disassembly.

[0025] Both the primary crusher 4 and the secondary crusher 5 are equipped with multiple cutter discs 7 arranged longitudinally side by side. Multiple grooves 9 are formed on the outer edge of the cutter teeth 8 of each cutter disc 7. These grooves assist the cutter teeth 8 in crushing waste lithium batteries, improving the crushing effect. A motor 10 is installed on each of the two sides of the primary crusher 4 and the secondary crusher 5. The output shaft of the motor 10 passes through the outer wall of the crusher and is connected to each cutter disc 7. In the parallel arrangement of the cutter discs 7, the odd-numbered rows are driven by the motor on the left, and the even-numbered rows are driven by the motor on the right. The odd-numbered and even-numbered rows of cutter discs rotate in opposite directions, further enhancing the crushing effect.

[0026] The primary crusher 4 and the secondary crusher 5 are also connected to an external nitrogen pipeline 11 for introducing nitrogen to protect the crushing environment. A star-shaped discharge port 12 is provided at the bottom of the secondary crusher 5.

[0027] Additionally, it should be noted that the above-described specific implementation is merely an optimized solution of this patent, and any modifications or improvements made by those skilled in the art based on the above concept are within the scope of protection of this patent.

Claims

1. A live shredding system for lithium batteries, characterized by: Including chain conveyer, the front end of chain conveyer is loading device, the end of chain conveyer is connected with anaerobic feeder, the feed inlet of anaerobic feeder is communicated with the end of chain conveyer, the anaerobic feeder includes a box body box body; The box body is composed of rotor, side box body, outer box body, wherein the outer box body is annular, the side box body has two, and is fixed with the two sides of outer box body respectively, the front end of rotor passes through the side box body, the end is connected with driving motor, and a plurality of partitions are uniformly installed on the outside of rotor, the outside of rotor is evenly divided by partition, and the partition forms a plurality of cavities with side box body and outer box body, a lithium battery can fall into each cavity, rubber plate is embedded in the inner wall of partition, side box body and outer box body, and the bottom of outer box body is connected with discharge port; A plurality of nitrogen filling inlets and air outlets are formed on the outer box body, and the nitrogen filling inlets and air outlets are connected with external nitrogen pipe and exhaust pipe respectively; The bottom discharge port of anaerobic feeder is connected with the top feed inlet of primary crusher through disc feeder, the bottom of primary crusher is connected with the top of secondary crusher through a detachable flange, a plurality of cutter heads are arranged in the primary crusher and secondary crusher, the cutter heads are longitudinally arranged in parallel, a plurality of grooves are formed on the cutter teeth of outer edge of cutter head, a motor is arranged on the two sides of primary crusher and secondary crusher, the output shaft of motor penetrates the outer wall of crusher, and is connected with each cutter head, in the parallel arranged cutter heads, the cutter heads in odd number column are driven by left motor, the cutter heads in even number column are driven by right motor, the cutter heads in odd number column and even number column rotate in opposite directions, and the bottom of secondary crusher is provided with star-shaped discharge port.

2. The live shredding system of lithium batteries of claim 1, wherein: Temperature sensor and flame detector are arranged above the discharge port, and the pipeline with feed inlet is provided with explosion-proof valve.

3. The live shredding system of lithium batteries of claim 1, wherein: The loading device is provided with weighing module.

4. The live shredding system of lithium batteries of claim 1, wherein: The feed inlet is funnel-shaped.

5. The live shredding system of lithium batteries of claim 1, wherein: The primary crusher and secondary crusher are also connected with external nitrogen pipeline.

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