Recovery device for thermal runaway lithium battery

Abstract

The utility model relates to the technical field, and discloses a thermal runaway lithium battery recovery device which comprises a box body, a feeding hole is formed in the top of the box body, a treatment box is mounted in the box body, the top of the treatment box is communicated with the feeding hole, a thermal imaging camera is arranged on one side of the treatment box, and a crushing box is mounted on one side of the treatment box; the bottom end of the smashing box communicates with a second smashing box, an oscillating mechanism is installed on one side of the second smashing box, and the bottom end of the second smashing box communicates with a screening box through a discharging groove. According to the device, the lithium batteries to be recycled are placed in the box body, the control air valve is started, aerosol is sprayed into the treatment box through the spraying pipe, the lithium batteries in thermal runaway are subjected to continuous fire extinguishing work and placed in the treatment box for reignition, real-time monitoring is conducted through the thermal imaging camera on one side, and the fire extinguishing efficiency is improved; and the rotating motor is started to drive the bearing disc to rotate during fire extinguishing, so that the lithium battery is driven to rotate in the treatment box, and fire extinguishing comprehensiveness is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery recycling, in particular to a device for recycling thermal runaway lithium batteries. Background Art

[0002] Thermal runaway refers to a chain reaction phenomenon caused by various factors. The large amount of heat and harmful gases emitted by thermal runaway can cause battery fire and explosion. Battery thermal runaway often starts with the decomposition of the negative electrode SEI film in the battery cell, followed by the decomposition and melting of the diaphragm, causing the negative electrode to react with the electrolyte. Subsequently, the positive electrode and the electrolyte will decompose, causing a large-scale internal short circuit, causing the electrolyte to burn, and then spread to other cells, causing serious thermal runaway, causing the entire battery pack to spontaneously combust. When existing lithium batteries are recycled, they often need to be crushed before processing.

[0003] A Chinese document with the publication number CN217313576U has been searched and disclosed a crushing device for lithium battery recycling, which relates to the technical field of lithium battery recycling. The utility model includes a box; two rows of rotating motors are arranged on one side of the box; the ends of the rotating motor shafts are connected to the first rotating shaft; the end of the first rotating shaft is rotatably connected to the first shaft seat; the circumferential side of the first rotating shaft is sleeved with crushing gear columns; the inner walls on both sides of the box and away from the bottom of the crushing gear column are fixedly connected with a stirring mechanism; the stirring mechanism includes a stirring barrel; a servo motor is installed on one side of the box; the end of the servo motor shaft is connected to the second rotating shaft; the circumferential side of the second stirring shaft is provided with spiral stirring blades in a circumferential array. The utility model drives the first rotating shaft by a rotating motor, so that two rows of crushing gear columns mesh with each other to crush the lithium battery, and then the second rotating shaft is driven by a servo motor, so that the spiral stirring blades and stirring rods perform secondary crushing on the lithium battery. The lithium battery is crushed more thoroughly, the operation is simple, and the practicability is strong. The device crushes the lithium battery by setting different crushing devices, but the crushed metal fragments merge with the electrolyte, affecting the recovery efficiency. At the same time, the device does not have a fire extinguishing device for thermal runaway lithium batteries. In view of the above problems, a device for recovering thermal runaway lithium batteries is provided herein. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a device for recovering thermal runaway lithium batteries, aiming to improve the problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a device for recovering thermal runaway lithium batteries, comprising a box body, a feed port is installed on the top of the box body, a processing box is installed inside the box body, the top of the processing box is connected to the feed port, and a thermal imaging camera is arranged on one side of the processing box;

[0006] A crushing box is installed on one side of the processing box, the bottom end of the crushing box is connected to a second crushing box, an oscillating mechanism is installed on one side of the second crushing box, the bottom end of the second crushing box is connected to a screening box through a material discharge chute, and one end of the oscillating mechanism is fixedly connected to one side of the screening box;

[0007] The oscillation mechanism comprises a rotary motor, a sleeve rod is fixedly mounted on the edge of the rotary disk of the rotary motor, a driven rod is movably mounted on the outer surface of the sleeve rod, a connecting block is fixedly sleeved on one end of the driven rod, and the connecting block is fixedly mounted on one side of the screening box.

[0008] As a further description of the above technical solution:

[0009] Three crushing rollers are installed inside the crushing box, three motors are installed on one side of the front end of the box, and the motors are connected to the crushing rollers one by one, and the crushing rollers are arranged in an inverted triangle structure.

[0010] As a further description of the above technical solution:

[0011] A stirring roller is installed inside the second crushing box, a second crushing roller is installed on the top of the stirring roller, one end of the second crushing roller passes through the box body and is provided with a second motor, and one end of the stirring roller is connected to the stirring motor.

[0012] As a further description of the above technical solution:

[0013] An aerosol storage box is installed on one side of the box body, and two aerosol fire extinguishing devices are installed inside the aerosol storage box. A control air valve is installed on the top of the aerosol storage box, and one end of the control air valve is connected to a nozzle, and one end of the nozzle is connected to one side of the internal processing box of the box body.

[0014] As a further description of the above technical solution:

[0015] The bottom end of the processing box is fixedly connected with connecting rods by bolts, and the bottom end of the connecting rod is fixedly connected with a support plate. A rotating motor is installed in the top center of the support plate. The rotating motor runs through the interior of the processing box and is connected to a receiving plate at one end. An electric push rod is arranged on one side of the rotating motor.

[0016] As a further description of the above technical solution:

[0017] Two screening plates are installed inside the screening box, and the aperture of the upper screening plate is larger than that of the lower screening plate. The bottom end of the screening box is connected with a discharge port, and the other end of the discharge port is connected with a collection box.

[0018] The utility model has the following beneficial effects:

[0019] In the utility model, the lithium batteries to be recycled are placed inside a box and the control air valve is started to spray the aerosol into the interior of the processing box through the nozzle to continuously extinguish the thermal runaway lithium batteries, prevent them from re-igniting inside, and conduct real-time monitoring through a thermal imaging camera on one side to improve the fire extinguishing efficiency. While extinguishing the fire, a rotating motor is started to drive the receiving plate to rotate, thereby driving the lithium batteries to rotate in the processing box to ensure comprehensive fire extinguishing. After the processing is completed, the electric push rod is started to drive the receiving plate structure to tilt, so that it enters the crushing box and the second crushing box for crushing. The crushed lithium batteries are classified through sub-screening, and the oscillation mechanism can be started to accelerate the sub-screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a thermal runaway lithium battery recovery device proposed by the utility model;

[0021] Figure 2 This is a cross-sectional view of a thermal runaway lithium battery recovery device proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of an oscillating mechanism for a thermal runaway lithium battery recovery device proposed by the utility model;

[0023] Figure 4 This is an enlarged schematic diagram of the structure at A of a thermal runaway lithium battery recovery device proposed by the utility model;

[0024] Legend:

[0025] 1. Box body; 2. Feeding port; 3. Processing box; 4. Crushing box; 5. Second crushing box; 6. Oscillation mechanism; 601. Rotating motor; 602. Sleeve rod; 603. Driven rod; 604. Connecting block; 7. Screening box; 8. Crushing roller; 9. Motor; 10. Stirring roller; 11. Second crushing roller; 12. Second motor; 13. Aerosol storage box; 14. Nozzle; 15. Connecting rod; 16. Support plate; 17. Rotating motor; 18. Receiving plate; 19. Electric push rod; 20. Screening plate; 21. Discharging port; 22. Collection box; 23. Thermal imaging camera. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-4The utility model provides an embodiment: a device for recovering a thermal runaway lithium battery, comprising a box body 1, a feed port 2 is installed on the top of the box body 1, a processing box 3 is installed inside the box body 1, the top of the processing box 3 is connected to the feed port 2, and a thermal imaging camera 23 is arranged on one side of the processing box 3;

[0028] A crushing box 4 is installed on one side of the processing box 3, and the bottom end of the crushing box 4 is connected to a second crushing box 5, and an oscillating mechanism 6 is installed on one side of the second crushing box 5. The bottom end of the second crushing box 5 is connected to a screening box 7 through a material discharge chute, and one end of the oscillating mechanism 6 is fixedly connected to one side of the screening box 7;

[0029] The oscillation mechanism 6 includes a rotating motor 601, a sleeve rod 602 is fixedly installed at the edge of the turntable of the rotating motor 601, a driven rod 603 is movably installed on the outer surface of the sleeve rod 602, one end of the driven rod 603 is fixedly sleeved with a connecting block 604, and the connecting block 604 is fixedly installed on one side of the screening box 7. When the rotating motor 601 is started to drive the sleeve rod 602 to rotate, the sleeve rod 602 drives the movably connected driven rod 603 to move, and the driven rod 603 drives the screening box 7 through the connecting block 604 to complete the oscillation work, thereby accelerating the classification of lithium batteries.

[0030] Three crushing rollers 8 are installed inside the crushing box 4, and three motors 9 are installed on the front side of the box body 1. The motors 9 are connected to the crushing rollers 8 one by one, and the crushing rollers 8 are arranged in an inverted triangle structure. The motors 9 are started by an external controller to drive the crushing rollers 8 to complete the initial crushing of the lithium battery, so that the external metal structure is separated from the built-in electrolyte, which is convenient for subsequent recycling.

[0031] A stirring roller 10 is installed inside the second pulverizing box 5, and a second pulverizing roller 11 is installed on the top of the stirring roller 10. One end of the second pulverizing roller 11 passes through the box body 1 and is provided with a second motor 12. One end of the stirring roller 10 is connected to the stirring motor. The stirring motor is started to drive the stirring roller 10 to complete the stirring work and enhance the pulverizing effect. The second motor 12 is started by an external controller to drive the second pulverizing roller 11 to complete the secondary pulverization of the lithium battery.

[0032] An aerosol storage box 13 is installed on one side of the box body 1, and two aerosol fire extinguishing devices are installed inside the aerosol storage box 13. A control air valve is installed on the top of the aerosol storage box 13, and one end of the control air valve is connected to a nozzle 14, and one end of the nozzle 14 is connected to one side of the internal processing box 3 of the box body 1. The aerosol fire extinguishing cans are collected through the aerosol storage box 13, and the control air valve is started to transport the built-in aerosol to the interior of the processing box 3 through the nozzle 14 for fire extinguishing work, so as to prevent the internal structure of the lithium battery from the risk of re-ignition.

[0033] The bottom end of the processing box 3 is fixedly connected with a connecting rod 15 by bolts, and the bottom end of the connecting rod 15 is fixedly connected with a support plate 16. A rotating motor 17 is installed in the center of the top of the support plate 16. The rotating motor 17 runs through the interior of the processing box 3 and is connected with a receiving plate 18 at one end. An electric push rod 19 is provided on one side of the rotating motor 17. The connecting rod 15 is fixedly installed on the bottom of the processing box 3 by bolts, thereby completing the fixed connection with the support plate 16. By starting the rotating motor 17, the receiving plate 18 can be driven to rotate slowly, and the receiving plate 18 can receive the thermal runaway lithium batteries inside the box body 1. When the lithium battery is extinguished, the electric push rod is started to drive one side of the receiving plate 18 to be in an inclined state, thereby transporting the lithium battery to the inside of the crushing box 4.

[0034] Two sieve plates 20 are installed inside the sieve box 7, and the aperture of the upper sieve plate 20 is larger than that of the lower sieve plate 20. The bottom end of the sieve box 7 is connected to a discharge port 21, and the other end of the discharge port 21 is connected to a collecting box 22. The decomposed lithium batteries are classified and recycled through the sieve plates 20 with different apertures, and the electrolyte is collected into the collecting box 22 through the discharge port 21 to complete the structural separation from the metal sheet.

[0035] Working principle: Place the thermal runaway lithium battery to be processed into the box 1 through the feed port 2, then the lithium battery enters the processing box 3 and is received by the receiving plate 18, start the control valve to spray the aerosol through the nozzle 14 to continuously extinguish the lithium battery, and at the same time start the rotating motor 17 to drive the receiving plate 18 to rotate, so as to ensure that the lithium battery can be fully contacted when the aerosol is extinguished, start the electric push rod 19 through the external controller to drive one side of the receiving plate 18 to adjust to the tilt angle, so that the lithium battery enters the crushing box 4, and start the three motors 9 to drive the crushing roller 8 to rotate, so as to complete the crushing of the lithium battery. Decomposition work, then the decomposed lithium battery enters the temple of the second crushing box 5, starts the second motor 12 to drive the second crushing roller 11 for secondary decomposition, and the decomposed lithium battery enters the interior of the sub-screen 7, and is collected through the sub-screen plates 20 with different apertures. At the same time, the rotary motor 601 is started to drive the sleeve rod 602 to rotate, and the sleeve rod 602 drives the movable connected driven rod 603 to move, and the driven rod 603 drives the sub-screen box 7 to complete the oscillation work through the connecting block 604, thereby accelerating the classification of lithium batteries, separating metal scraps of different sizes and electrolytes, and the electrolyte is collected into the collection box 22 through the discharge port 21.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for recovering a thermal runaway lithium battery, comprising a housing (1), characterized in that: A feed port (2) is installed on the top of the box body (1), a processing box (3) is installed inside the box body (1), the top of the processing box (3) is connected to the feed port (2), and a thermal imaging camera (23) is arranged on one side of the processing box (3); A crushing box (4) is installed on one side of the processing box (3); the bottom end of the crushing box (4) is connected to a second crushing box (5); an oscillating mechanism (6) is installed on one side of the second crushing box (5); the bottom end of the second crushing box (5) is connected to a screening box (7) through a material discharge chute; one end of the oscillating mechanism (6) is fixedly connected to one side of the screening box (7); The oscillating mechanism (6) comprises a rotating motor (601), a sleeve rod (602) is fixedly mounted on the edge of the rotating disk of the rotating motor (601), a driven rod (603) is movably mounted on the outer surface of the sleeve rod (602), a connecting block (604) is fixedly sleeved on one end of the driven rod (603), and the connecting block (604) is fixedly mounted on one side of the screening box (7).

2. A device for recovering thermal runaway lithium batteries according to claim 1, characterized in that: Three crushing rollers (8) are installed inside the crushing box (4), three motors (9) are installed on one side of the front end of the box body (1), and the motors (9) are connected to the crushing rollers (8) in a one-to-one correspondence. The crushing rollers (8) are arranged in an inverted triangle structure.

3. The device for recovering thermal runaway lithium batteries according to claim 1, characterized in that: A stirring roller (10) is installed inside the second crushing box (5), a second crushing roller (11) is installed on the top of the stirring roller (10), one end of the second crushing roller (11) passes through the box body (1) and is provided with a second motor (12), and one end of the stirring roller (10) is connected to the stirring motor.

4. The device for recovering thermal runaway lithium batteries according to claim 1, characterized in that: An aerosol storage box (13) is installed on one side of the box body (1), and two aerosol fire extinguishing devices are installed inside the aerosol storage box (13). A control air valve is installed on the top of the aerosol storage box (13), and one end of the control air valve is connected to a nozzle (14), and one end of the nozzle (14) is connected to one side of the internal processing box (3) of the box body (1).

5. The device for recovering thermal runaway lithium batteries according to claim 3, characterized in that: The bottom end of the processing box (3) is fixedly connected to a connecting rod (15) by bolts, and the bottom end of the connecting rod (15) is fixedly connected to a support plate (16). A rotating motor (17) is installed in the center of the top of the support plate (16). The rotating motor (17) runs through the interior of the processing box (3) and is connected to a receiving plate (18) at one end. An electric push rod (19) is arranged on one side of the rotating motor (17).

6. The device for recovering thermal runaway lithium batteries according to claim 1, characterized in that: Two screening plates (20) are installed inside the screening box (7), and the aperture of the upper screening plate (20) is larger than that of the lower screening plate (20). The bottom end of the screening box (7) is connected to a discharge port (21), and the other end of the discharge port (21) is connected to a collection box (22).

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