Lithium ion battery crushing and recycling device

Abstract

The utility model discloses a lithium ion battery crushing and recycling device which comprises a low-temperature treatment box and a nitrogen storage tank, a lithium battery crusher is fixedly installed in the low-temperature treatment box, the bottom end of the lithium battery crusher is fixedly connected with a discharging connecting pipe, the bottom end of the discharging connecting pipe is fixedly provided with a separation connecting pipe, and the separation connecting pipe is fixedly connected with the nitrogen storage tank. One side of the separation connecting pipe is fixedly connected with a gas outlet branch pipe, one end of the gas outlet branch pipe is fixedly provided with a fixed connecting pipe, and one end of the fixed connecting pipe is fixedly provided with a nitrogen circulating pipe. According to the lithium battery crusher, the temperature in the lithium battery crusher is reduced through the low-temperature treatment box, the evaporation capacity of electrolyte is reduced, meanwhile, the temperature of circulating nitrogen is reduced, the safety in the lithium battery crusher is ensured, the continuity of crushing a lithium battery by the whole device can be ensured, meanwhile, the difficulty of separating electrolyte steam by nitrogen can be reduced, and the service life of the lithium battery crusher is prolonged. The work burden of the whole device is reduced, and the whole device can work continuously.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium-ion battery crushing and recycling, in particular to a lithium-ion battery crushing and recycling device. Background Technique

[0002] In the prior art, as a secondary battery, lithium-ion batteries are currently applied in many fields such as energy storage, kinetic energy, and consumption. Physical crushing dry recycling has become the mainstream recycling method at present because of its short process flow, low cost, low pollution, and the ability to achieve full-component recycling. Crushing is the most important process link in this method because there may be risks of fire and explosion.

[0003] After retrieval, a patent with the Chinese patent application number 202322235723.7 discloses a safe crushing and recycling device for retired lithium-ion batteries, including a feeding conveyor device, a counting device, a feeding sealing device, a safe crushing and aggregating device, a filtering and backwashing device, an air extraction device, and a nitrogen gas supply and recycling device. The discharge end of the feeding conveyor device is located above the feeding end of the feeding sealing device. The bottom end of the feeding sealing device is connected to the upper part of the safe crushing and aggregating device. The counting device and the filtering and backwashing device are located on the top of the feeding sealing device. The air inlet of the filtering and backwashing device is connected to the feeding sealing device through a flange. The air extraction device is located on one side of the safe crushing and aggregating device. The safe crushing and aggregating device is connected to the air extraction device through an air extraction fan inlet pipe.

[0004] The above patent has the following deficiencies: This device circulates the nitrogen gas that has undergone temperature reduction treatment to protect the crushing process in real time. The crushing safety is high, and the nitrogen gas can be recycled to reduce resource waste and improve resource utilization rate. However, in actual use, the heated nitrogen gas is used to increase the evaporation rate of the electrolyte, and the evaporated electrolyte is carried away, and then the nitrogen gas is separated. The overall process is relatively cumbersome, and the separation of nitrogen gas will also increase the working burden of the overall device. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a lithium-ion battery crushing and recycling device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A lithium-ion battery crushing and recycling device, comprising: a low-temperature treatment box and a nitrogen storage tank. Inside the low-temperature treatment box, a lithium battery crusher is fixedly installed. At the bottom end of the lithium battery crusher, a discharge connection pipe is fixedly connected. At the bottom end of the discharge connection pipe, a separation connection pipe is fixedly installed. On one side of the separation connection pipe, an air outlet branch pipe is fixedly connected. At one end of the air outlet branch pipe, a fixed connection pipe is fixedly installed. At one end of the fixed connection pipe, a nitrogen circulation pipe is fixedly installed. At the top end of the nitrogen circulation pipe, a three-way pipe is fixedly installed. One air outlet of the three-way pipe is fixedly installed with a connecting air pipe. At one end of the connecting air pipe, an installation adapter pipe is fixedly installed. At the bottom end of the installation adapter pipe, a ventilation connection pipe is provided. The ventilation connection pipe is fixedly connected to the top end of the lithium battery crusher.

[0008] As a further scheme of the present utility model: An air extraction pump is fixedly installed at the air inlet of the three-way pipe. The air inlet of the air extraction pump is connected to the nitrogen storage tank.

[0009] As a further scheme of the present utility model: An installation pipe head is fixedly installed between the ventilation connection pipe and the installation adapter pipe. At the top of the inner cavity of the installation pipe head, a guide air blower I is fixedly installed.

[0010] As a further scheme of the present utility model: At one end of the inner cavity of the air outlet branch pipe close to the fixed connection pipe, a guide air blower II is fixedly installed. On one side of the guide air blower II, a filter screen plate is provided.

[0011] As a further scheme of the present utility model: One side of the ventilation connection pipe is fixedly connected with a feed connection pipe. The top end of the feed connection pipe penetrates through the top box body of the low-temperature treatment box and extends upward.

[0012] As a further scheme of the present utility model: At the top of the extended end of the feed connection pipe, a battery feed hopper is fixedly installed. At the top end of the battery feed hopper, a sealed top cover is fixedly installed.

[0013] As a further scheme of the present utility model: An electromagnetic valve II is fixedly installed at the bottom end of the separation connection pipe. At the bottom end of the electromagnetic valve II, a crushed battery collection box is fixedly installed.

[0014] As a further scheme of the present utility model: An installation connection frame is fixedly installed on the front surface of the low-temperature treatment box. Inside the installation connection frame, a refrigerator is fixedly installed.

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

[0016] This lithium-ion battery crushing and recycling device reduces the temperature inside the lithium battery crusher through a low-temperature treatment box, reduces the evaporation of the electrolyte, and simultaneously reduces the temperature of the circulating nitrogen to ensure the safety inside the lithium battery crusher. It can not only ensure the continuity of the overall device for crushing lithium batteries, but also reduce the difficulty of separating the electrolyte vapor from nitrogen, reduce the workload of the overall device, and enable the overall device to work continuously.

[0017] Parts not involved in this device are the same as or can be implemented using existing technologies. The structure of this utility model is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the overall assembly of this utility model;

[0019] Figure 2 is a partial sectional structural schematic diagram of the overall assembly of this utility model;

[0020] Figure 3 For this utility model Figure 2 is an enlarged structural schematic diagram of part A;

[0021] Figure 4 For this utility model Figure 2 is an enlarged structural schematic diagram of part B.

[0022] In the figure: 1, bearing workbench; 2, support column; 3, crushed battery collection box; 4, bearing base; 5, low-temperature treatment box; 6, installation connection frame; 7, refrigerator; 8, nitrogen storage tank; 9, solenoid valve 1; 10, air extraction pump; 11, three-way pipe; 12, connecting air pipe; 13, installation adapter pipe; 14, battery feed hopper; 15, sealing top cover; 16, feed connecting pipe; 17, ventilation connecting pipe; 18, installation pipe head; 19, diversion fan 1; 20, lithium battery crusher; 21, heat dissipation fin 1; 22, nitrogen circulation pipe; 23, heat dissipation fin 2; 24, fixed connecting pipe; 25, discharge connecting pipe; 26, separation connecting pipe; 27, outlet branch pipe; 28, filter screen plate; 29, diversion fan 2; 30, solenoid valve 2; 31, solenoid valve 3. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of this utility model will be clearly and completely described in conjunction with the drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all of the embodiments.

[0024] A lithium-ion battery crushing and recycling device, as Figures 1 to 4As shown in the figure, it includes a low-temperature treatment box 5 and a nitrogen storage tank 8. The bottom end of the low-temperature treatment box 5 is fixedly installed at the top end of the bearing workbench 1. The bottom end of the bearing workbench 1 is fixedly installed with a plurality of support columns 2 at equal intervals. The nitrogen storage tank 8 is fixedly installed on one side of the top end of the bearing workbench 1.

[0025] An installation connection frame 6 is fixedly installed on the front surface of the low-temperature treatment box 5. A refrigerator 7 is fixedly installed inside the installation connection frame 6. The refrigerating end of the refrigerator 7 penetrates through the front box body of the low-temperature treatment box 5 and extends into the interior of the low-temperature treatment box 5, so that the interior of the low-temperature treatment box 5 always maintains a low temperature state.

[0026] There are many types of the above-mentioned refrigerators 7 to choose from. Taking the semiconductor refrigeration device as an example, its heat absorption end is inside the low-temperature treatment box 5, quickly reducing the temperature inside the low-temperature treatment box 5; the heat dissipation end of the semiconductor refrigeration device is set outside, and the heat dissipated by the semiconductor refrigeration device can be utilized in various ways.

[0027] A lithium battery crusher 20 is fixedly installed inside the low-temperature treatment box 5. The bottom end of the lithium battery crusher 20 is fixedly connected to a discharge connection pipe 25. The bottom end of the discharge connection pipe 25 is fixedly installed with a separation connection pipe 26. The bottom end of the separation connection pipe 26 penetrates through the low-temperature treatment box 5 and the bearing workbench 1 and extends downward, and its extended end is fixedly installed with a solenoid valve II 30.

[0028] The bottom end of the solenoid valve II 30 is fixedly installed with a crushed battery collection box 3. A bearing base 4 is arranged at the bottom end of the crushed battery collection box 3, and a solenoid valve III 31 is fixedly installed at the top end of the crushed battery collection box 3. When the crushed lithium-ion battery enters the interior of the crushed battery collection box 3, the solenoid valve III 31 is closed to reduce the evaporation amount of the electrolyte and reduce the influence of the electrolyte on nitrogen.

[0029] After the lithium battery solid fragments and the electrolyte are separated inside the crushed battery collection box 3, the heat of the heat dissipation end of the semiconductor refrigeration device can be used to heat the lithium battery solid fragments to accelerate the evaporation rate of the residual electrolyte and reduce the influence of the electrolyte on the later treatment of the lithium battery solid fragments.

[0030] An air outlet branch pipe 27 is integrally formed on one side of the separation connection pipe 26. A diversion fan II 29 is fixedly installed at the end of the inner cavity of the air outlet branch pipe 27 far from the separation connection pipe 26. A filter screen plate 28 is arranged on the side of the diversion fan II 29 close to the separation connection pipe 26. The diversion fan II 29 extracts nitrogen, and the filter screen plate 28 prevents the lithium battery solid fragments from having an adverse impact on the diversion fan II 29.

[0031] One end of the air outlet branch pipe 27 is fixedly installed with a fixed connection pipe 24. One end of the fixed connection pipe 24 is fixedly installed with a nitrogen circulation pipe 22. A plurality of heat dissipation fins II 23 are fixedly connected to the outer wall of the nitrogen circulation pipe 22 to accelerate the cooling of nitrogen.

[0032] At the top of the nitrogen circulation pipe 22, a three-way pipe 11 is fixedly installed. An air extraction pump 10 is fixedly installed at the air inlet of the three-way pipe 11. The air inlet of the air extraction pump 10 is connected to the nitrogen storage tank 8. An electromagnetic valve I 9 is fixedly installed at the air inlet of the nitrogen storage tank 8. The electromagnetic valve I 9 cooperates with the air extraction pump 10 to control the export volume and export speed of nitrogen.

[0033] One air outlet of the three-way pipe 11 is fixedly installed with a connecting air pipe 12. One end of the connecting air pipe 12 is fixedly installed with a mounting adapter pipe 13. At the bottom end of the mounting adapter pipe 13, a mounting pipe head 18 is fixedly installed. At the top of the inner cavity of the mounting pipe head 18, a guiding air blower I 19 is fixedly installed.

[0034] At the bottom end of the mounting pipe head 18, a ventilation connecting pipe 17 is fixedly installed. The bottom end of the ventilation connecting pipe 17 penetrates through the top box body of the low-temperature treatment box 5 and extends downward. The extended end is fixedly connected to the top end of the lithium battery crusher 20.

[0035] One side of the ventilation connecting pipe 17 is fixedly connected with a feeding connecting pipe 16. The top end of the feeding connecting pipe 16 penetrates through the top box body of the low-temperature treatment box 5 and extends upward; at the top of the extended end of the feeding connecting pipe 16, a battery feeding hopper 14 is fixedly installed. At the top end of the battery feeding hopper 14, a sealing top cover 15 is fixedly installed to prevent the leakage of electrolyte evaporation gas during the crushing process of lithium-ion batteries; at the same time, a plurality of heat dissipation fins I 21 are equidistantly fixedly connected to the outer wall of the lithium battery crusher 20 to accelerate the reduction speed of the internal temperature of the lithium battery crusher 20.

[0036] Working principle:

[0037] Please refer to Figures 1 to 4 and assemble this device as Figure 1 shown.

[0038] During the use of this device, first turn on the cooler 7 to cool the interior of the low-temperature treatment box 5. At the same time, start the air extraction pump 10 and the first electromagnetic valve 9 to extract nitrogen from the interior of the nitrogen storage tank 8 and introduce it into the tee 11. Synchronously turn on the first diversion fan 19 and the second diversion fan 29 to make the nitrogen circulate inside the tee 11, the connecting air pipe 12, the lithium battery crusher 20, the fixed connecting pipe 24 and the nitrogen circulation pipe 22; open the sealed top cover 15, and then quantitatively pour the lithium-ion battery to be crushed into the battery feed hopper 14. The lithium battery crusher 20 crushes the lithium-ion battery. The circulating low-temperature nitrogen reduces the possibility of fire and explosion during the crushing of the lithium-ion battery. At the same time, the low-temperature treatment box 5 absorbs the heat inside the lithium battery crusher 20 and reduces the evaporation amount of the electrolyte. After the crushing is completed, it enters the crushed battery collection box 3 through the second electromagnetic valve 30 and the third electromagnetic valve 31, waiting for the next operation; after the crushing work of the lithium-ion battery is completed, the nitrogen inside the device is evacuated through the air extraction pump 10 and introduced into the nitrogen storage tank 8. Then, the nitrogen inside the nitrogen storage tank 8 is separated to separate the electrolyte vapor carried in the nitrogen, and to ensure the purity of the nitrogen to the greatest extent.

[0039] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A lithium-ion battery crushing and recycling device, characterized in that, Including: A low-temperature treatment box (5) and a nitrogen storage tank (8). Inside the low-temperature treatment box (5), a lithium battery crusher (20) is fixedly installed. At the bottom end of the lithium battery crusher (20), a discharge connection pipe (25) is fixedly connected. At the bottom end of the discharge connection pipe (25), a separation connection pipe (26) is fixedly installed. On one side of the separation connection pipe (26), an air outlet branch pipe (27) is fixedly connected. At one end of the air outlet branch pipe (27), a fixed connection pipe (24) is fixedly installed. At one end of the fixed connection pipe (24), a nitrogen circulation pipe (22) is fixedly installed. At the top end of the nitrogen circulation pipe (22), a three-way pipe (11) is fixedly installed. One air outlet of the three-way pipe (11) is fixedly installed with a connection air pipe (12). At one end of the connection air pipe (12), a mounting adapter pipe (13) is fixedly installed. At the bottom end of the mounting adapter pipe (13), a ventilation connection pipe (17) is provided. The ventilation connection pipe (17) is fixedly connected to the top end of the lithium battery crusher (20).

2. The lithium-ion battery crushing and recycling device according to claim 1, wherein: The intake port of the three-way pipe (11) is fixedly installed with an air extraction pump (10). The intake port of the air extraction pump (10) is connected to the nitrogen storage tank (8).

3. The lithium-ion battery crushing and recycling device according to claim 1, wherein: Between the ventilation connection pipe (17) and the mounting adapter pipe (13), a mounting pipe head (18) is fixedly installed. At the top of the inner cavity of the mounting pipe head (18), a diversion fan one (19) is fixedly installed.

4. A lithium-ion battery crushing and recycling device according to claim 1, characterized in that: At one end of the inner cavity of the air outlet branch pipe (27) close to the fixed connection pipe (24), a diversion fan two (29) is fixedly installed. On one side of the diversion fan two (29), a filter screen plate (28) is provided.

5. A lithium-ion battery crushing and recycling device according to claim 1, characterized in that: On one side of the ventilation connection pipe (17), a feed connection pipe (16) is fixedly connected. The top end of the feed connection pipe (16) penetrates through the top box body of the low-temperature treatment box (5) and extends upward.

6. The lithium-ion battery crushing and recycling device according to claim 5, wherein: At the top of the extended end of the feed connection pipe (16), a battery feed hopper (14) is fixedly installed. At the top end of the battery feed hopper (14), a sealed top cover (15) is fixedly installed.

7. A lithium-ion battery crushing and recycling device according to claim 1, characterized in that: At the bottom end of the separation connection pipe (26), a solenoid valve two (30) is fixedly installed. At the bottom end of the solenoid valve two (30), a crushed battery collection box (3) is fixedly installed.

8. A lithium-ion battery crushing and recycling device according to claim 1, characterized in that: On the front surface of the low-temperature treatment box (5), a mounting connection frame (6) is fixedly installed. Inside the mounting connection frame (6), a refrigerator (7) is fixedly installed.

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