Battery pack plastic diaphragm processing and decomposing device

Abstract

The invention belongs to the technical field of battery pack diaphragm treatment, and particularly relates to a battery pack plastic diaphragm treatment and decomposition device which comprises an equipment shell and a feeding port, the feeding port is formed in the upper surface of the equipment shell, a stirring rod penetrates through the interior of the equipment shell, and a first bearing is installed between the stirring rod and the equipment shell; a stirring rod is arranged in the equipment shell, a first driving motor is arranged between the end part of the stirring rod and the equipment shell, an air blower is arranged on the upper surface of the equipment shell, an air outlet of the air blower is connected with a heating pipe, an electric heating wire is connected in the heating pipe in a penetrating manner, and the end part of the heating pipe is connected with a first connecting pipe. According to the method, the crushed and decomposed plastic diaphragm is treated in a heating and oxidizing mode, then the plastic diaphragm is subjected to acid pickling and oxidizing treatment, and finally the plastic diaphragm is subjected to cleaning and drying treatment, so that oil existing on the surface is removed, and the application universality of the battery pack plastic diaphragm after recycling treatment is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery pack diaphragm processing, and in particular relates to a battery pack plastic diaphragm processing and decomposition device. Background Art

[0002] The plastic separator of the battery pack is also called the isolation membrane. It is a porous plastic film located between the positive and negative electrodes of the lithium-ion battery. It is one of the key inner components of the battery. The main function of the plastic separator of the battery pack is to prevent the positive and negative electrodes from directly contacting each other and short-circuiting, ensuring the safe operation of the battery; allowing lithium ions to pass through to complete the ion migration during the charging and discharging process; when an abnormality occurs in the battery system, such as temperature rise, the thermoplastic separator will melt, the micropores will close, and it will become an insulator, blocking the current and preventing danger. The production process of the plastic separator of the battery pack includes many links such as raw material formula and rapid formula adjustment, micropore preparation technology, and independent design of complete sets of equipment. Among them, micropore preparation technology is the core; The performance of the plastic separator of the battery pack has an important influence on the overall performance of the battery, so the plastic separator of the battery pack needs to meet the following requirements: First, the plastic separator of the battery pack must have good insulation properties to prevent short circuits caused by contact between the positive and negative electrodes; second, the plastic separator of the battery pack needs to have sufficient puncture strength, tensile strength, etc., and basically maintain dimensional stability under sudden high temperature conditions; at the same time, the plastic separator of the battery pack needs to ensure low resistance and high ionic conductivity, and have good permeability to lithium ions; the solvent of the electrolyte is a highly polar organic compound, and the separator must be resistant to electrolyte corrosion and have sufficient chemical and electrochemical stability; it must also have good wettability to the electrolyte and sufficient liquid absorption and moisture retention capacity; finally, the plastic separator of the battery pack needs to have spatial stability and flatness to ensure the stability and flatness of the internal structure of the battery.

[0003] When the existing battery pack plastic diaphragm is processed and decomposed, since plasticizers are added to the battery pack plastic diaphragm, oil will be separated when the plastic diaphragm is recycled and crushed, resulting in a large amount of oil in the crushed battery pack plastic diaphragm. This will result in the battery pack plastic diaphragm needing to be degreased after processing, otherwise the processed material cannot be used directly. Summary of the invention

[0004] The purpose of the present invention is to provide a battery pack plastic diaphragm processing and decomposition device, aiming to solve the problem in the prior art that when the existing battery pack plastic diaphragm is processed and decomposed, since plasticizers are added to the battery pack plastic diaphragm, oil will be separated when the plastic diaphragm is recycled and crushed, resulting in a large amount of oil in the crushed battery pack plastic diaphragm. This will result in the need to degrease the battery pack plastic diaphragm after processing, otherwise the processed material cannot be used directly.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a battery pack plastic diaphragm processing and decomposition device, comprising an equipment shell and a feed port, the upper surface of the equipment shell is provided with a feed port, a stirring rod is passed through the interior of the equipment shell, a first bearing is installed between the stirring rod and the equipment shell, a first driving motor is installed between the end of the stirring rod and the equipment shell, a blower is installed on the upper surface of the equipment shell, the air outlet of the blower is connected to a heating tube, an electric heating wire is passed through the interior of the heating tube, the end of the heating tube is connected to a first connecting tube, and the bottom side of the first connecting tube is connected to an air inlet pipe The air inlet pipe passes through the surface of the equipment shell and extends to the interior of the equipment shell, the side surface of the equipment shell is connected to an oxidant storage box, the side surface of the oxidant storage box is connected to a second connecting pipe, the side surface of the second connecting pipe is installed with a spray head, the middle part of the second connecting pipe is installed with a solenoid valve, the interior of the equipment shell is provided with an automatic opening and closing mechanism, the bottom side of the equipment shell is provided with a pickling tank, the interior of the equipment shell is provided with a first conveyor belt, the interior of the equipment shell is provided with a second conveyor belt, the surface of the second conveyor belt is provided with a dryer, and the surface of the second conveyor belt is provided with a water washing mechanism.

[0006] As a preferred embodiment of the battery pack plastic diaphragm processing and decomposition device of the present invention, two stirring rods are provided, and the stirring rods form a rotating structure with the device housing through the first bearing.

[0007] As a preferred battery pack plastic diaphragm processing and decomposition device of the present invention, the heating tube, the first connecting tube and the air inlet tube form a connecting structure, and the electric heating wire is made of iron-chromium-aluminum-containing molybdenum diaphragm material.

[0008] As a preferred battery pack plastic diaphragm processing and decomposition device of the present invention, the solenoid valve adopts a pilot solenoid valve, and the model of the solenoid valve is PU225-04.

[0009] As a preferred battery pack plastic diaphragm processing and decomposition device of the present invention, the automatic opening and closing mechanism includes hinges, partitions, sliding rods, fan-shaped gears, rotating rods, second bearings, second drive motors and limit grooves, and two sets of hinges are installed on the inner wall of the device shell, and the side surfaces of the two sets of hinges are respectively connected to a partition, and the ends of the two partitions are respectively connected to sliding rods, and a limiting groove is opened on the surface of the device shell close to the sliding rod, and the ends of the two sliding rods are connected to a fan-shaped gear.

[0010] As a preferred battery pack plastic diaphragm processing and decomposition device of the present invention, a rotating rod is connected through the center of the sector gear, a second bearing is installed between the rotating rod and the equipment housing, and a second drive motor is installed between the end of the rotating rod and the equipment housing.

[0011] As a preferred battery pack plastic diaphragm processing and decomposition device of the present invention, the partition forms a rotating structure with the device housing through a hinge, and the sliding rod forms a sliding connection with the device housing through a limiting groove.

[0012] As a preferred embodiment of the battery pack plastic diaphragm processing and decomposition device of the present invention, a meshing structure is formed between the two sector gears, and the sector gears form a rotating structure with the second bearing through a rotating rod.

[0013] As a preferred battery pack plastic diaphragm processing and decomposition device of the present invention, the water washing mechanism includes a water spraying pipe, a connecting water pipe, a water valve and a tap water pipe, a water spraying pipe is installed on the surface of the second conveyor belt, the end of the water spraying pipe is connected to the connecting water pipe, a water valve is installed in the middle of the connecting water pipe, and the end of the connecting water pipe is connected to the tap water pipe.

[0014] As a preferred battery pack plastic diaphragm processing and decomposition device of the present invention, the water spray pipe, the connecting water pipe and the tap water pipe form a connecting structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can generate a large amount of heat through the electric heating wire, and then the hot air can be transmitted to the inside of the equipment shell through the blower, the heating pipe, the first connecting pipe and the air inlet pipe, and then the high-energy potassium acid solution is sprayed to the plastic diaphragm fragments through the spray head. When the first driving motor drives the stirring rod to rotate, the oxidation of the surface of the plastic diaphragm fragments can be accelerated. Then when the two partitions rotate, the plastic diaphragm fragments can fall into the inside of the pickling tank, and the acetic acid in the pickling tank can react with the oxide on the surface of the plastic diaphragm fragments. Then, the plastic diaphragm fragments in the pickling tank can be transmitted to the surface of the second conveyor belt through the first conveyor belt, and then the water sprayed from the water spray pipe can clean the plastic diaphragm fragments. Then, when the second conveyor belt transmits the plastic diaphragm fragments to the inner side of the dryer, the plastic diaphragm fragments can be dried by the dryer. In this way, the oiliness on the surface of the battery pack plastic diaphragm can be removed, and the wide application of the battery pack plastic diaphragm after recycling is increased. The integrated processing process has high efficiency, simple operation and high economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a top view of a partial structure of the present invention; Figure 3It is a cross-sectional view of the internal structure of the present invention; Figure 4 This is a schematic diagram of the oxidant spray structure of the present invention; Figure 5 This is a schematic diagram of the heating structure of the present invention; Figure 6 This is a cross-sectional view of the heating tube structure of the present invention; Figure 7 This is a schematic diagram of the connection structure of the stirring rod of the present invention; Figure 8 It is a cross-sectional view of the automatic opening and closing mechanism of the present invention; Fig. 9 It is a cross-sectional view of the meshing structure of the sector gear of the present invention; Fig.10 It is a schematic diagram of the transmission structure of the present invention; Fig.11 For the present invention Fig.10 Schematic diagram of the structure at point A in the middle.

[0017] In the figure: 1. Equipment housing; 2. Feed inlet; 3. Stirring rod; 4. First drive motor; 5. Blower; 6. Heating pipe; 7. First connecting pipe; 8. Air inlet pipe; 9. Electric heating wire; 10. Hinge; 11. Partition; 12. Sliding rod; 13. Fan gear; 14. Rotating rod; 15. Second bearing; 16. Second drive motor; 17. Limiting groove; 18. Oxidant storage box; 19. Second connecting pipe; 20. Spray head; 21. Solenoid valve; 22. Pickling tank; 23. First conveyor belt; 24. Second conveyor belt; 25. Watering pipe; 26. Connecting water pipe; 27. Water valve; 28. Tap water pipe; 29. ​​Dryer; 30. First bearing. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 11The present invention provides the following technical solutions: a battery pack plastic diaphragm processing and decomposition device, comprising a device housing 1 and a feed port 2, the upper surface of the device housing 1 is provided with the feed port 2, a stirring rod 3 is penetrated inside the device housing 1, a first bearing 30 is installed between the stirring rod 3 and the device housing 1, a first driving motor 4 is installed between the end of the stirring rod 3 and the device housing 1, a blower 5 is installed on the upper surface of the device housing 1, a heating pipe 6 is connected to the air outlet of the blower 5, an electric heating wire 9 is penetrated inside the heating pipe 6, a first connecting pipe 7 is connected to the end of the heating pipe 6, an air inlet pipe 8 is connected to the bottom side of the first connecting pipe 7, and the air inlet pipe 8 penetrates The surface of the equipment shell 1 extends to the interior of the equipment shell 1, the side surface of the equipment shell 1 is connected to an oxidant storage box 18, the side surface of the oxidant storage box 18 is connected to a second connecting pipe 19, the side surface of the second connecting pipe 19 is installed with a spray head 20, the middle part of the second connecting pipe 19 is installed with a solenoid valve 21, the interior of the equipment shell 1 is provided with an automatic opening and closing mechanism, the bottom side of the equipment shell 1 is provided with a pickling tank 22, the interior of the equipment shell 1 is provided with a first conveyor belt 23, the interior of the equipment shell 1 is provided with a second conveyor belt 24, the surface of the second conveyor belt 24 is provided with a dryer 29, and the surface of the second conveyor belt 24 is provided with a water washing mechanism.

[0020] Preferably, two stirring rods 3 are provided, and the stirring rods 3 form a rotating structure with the device housing 1 through the first bearing 30 .

[0021] During specific use, the first driving motor 4 can drive the stirring rod 3 to rotate when in operation, thereby accelerating the oxidation rate of the surface of the plastic diaphragm fragments.

[0022] Preferably, the heating tube 6, the first connecting tube 7 and the air inlet tube 8 form a communicating structure, and the electric heating wire 9 is made of an iron-chromium-aluminum-containing molybdenum insulating material.

[0023] During specific use, the electric heating wire 9 can generate a large amount of heat after being energized, and the blower 5 can generate wind when running, and the heat can enter the interior of the device housing 1 through the first connecting pipe 7 and the air inlet pipe 8, thus providing a suitable temperature environment for the oxidation of the plastic diaphragm fragments.

[0024] Preferably, the solenoid valve 21 is a pilot-operated solenoid valve, and the model of the solenoid valve 21 is PU225-04.

[0025] During specific use, the solenoid valve 21 is opened to allow the potassium permanganate solution inside the oxidant storage box 18 to enter the interior of the second connecting pipe 19 and be sprayed toward the plastic diaphragm fragments inside the device housing 1 through the spray head 20. At this time, the potassium permanganate solution can react with the surface of the plastic diaphragm fragments for oxidation.

[0026] Preferably: the automatic opening and closing mechanism includes a hinge 10, a partition 11, a sliding rod 12, a fan-shaped gear 13, a rotating rod 14, a second bearing 15, a second drive motor 16 and a limit groove 17, and two sets of hinges 10 are installed on the inner wall of the device housing 1, and the side surfaces of the two sets of hinges 10 are respectively connected to a partition 11, and the ends of the two partitions 11 are respectively connected to the sliding rods 12, and the limiting grooves 17 are opened on the surface of the device housing 1 near the sliding rods 12, and the ends of the two sliding rods 12 are connected to a fan-shaped gear 13.

[0027] Preferably, a rotating rod 14 is connected through the center of the sector gear 13 , a second bearing 15 is installed between the rotating rod 14 and the device housing 1 , and a second driving motor 16 is installed between the end of the rotating rod 14 and the device housing 1 .

[0028] Preferably, the partition 11 forms a rotating structure with the device housing 1 through the hinge 10 , and the sliding rod 12 forms a sliding connection with the device housing 1 through the limiting groove 17 .

[0029] During specific use, the rotation of the sector gear 13 can drive the sliding rod 12 to rotate inside the limiting groove 17 , and the rotation of the sliding rod 12 can drive the partition 11 to rotate, thereby limiting the stability of the movement of the partition 11 .

[0030] Preferably, a meshing structure is formed between the two sector gears 13 , and a rotating structure is formed between the sector gear 13 and the second bearing 15 via the rotating rod 14 .

[0031] During specific use, when the second driving motor 16 is running, it can drive the sector gear 13 to rotate through the rotating rod 14. The rotation of the sector gear 13 can drive another sector gear 13 to rotate. The rotation of another sector gear 13 can drive another partition 11 to rotate through the partition 11 sliding rod 12.

[0032] Preferably: the water washing mechanism includes a water spraying pipe 25, a connecting water pipe 26, a water valve 27 and a tap water pipe 28, the surface of the second conveyor belt 24 is installed with a water spraying pipe 25, the end of the water spraying pipe 25 is connected to the connecting water pipe 26, the middle of the connecting water pipe 26 is installed with a water valve 27, and the end of the connecting water pipe 26 is connected to the tap water pipe 28.

[0033] Preferably, the water spray pipe 25 , the connecting water pipe 26 and the tap water pipe 28 form a communication structure.

[0034] When in use, after the water valve 27 is opened, the water in the water pipe 28 can enter the inside of the water spray pipe 25 through the connecting water pipe 26, and the water in the water spray pipe 25 can be sprayed out from the bottom side, and the sprayed water can wash the plastic diaphragm fragments.

[0035] Working principle: When using the battery pack plastic diaphragm treatment and decomposition device, first add potassium permanganate solution to the inside of the oxidant storage box 18, and inject acetic acid solution into the inside of the pickling tank 22, and then put the crushed battery pack plastic diaphragm into the feed port 2; connect the electric heating wire 9 to the power supply, and the electric heating wire 9 can generate a lot of heat after being energized. At this time, the blower 5 can be operated, and the blower 5 can generate wind when it is running. The heat can enter the inside of the first connecting pipe 7 along with the wind generated by the blower 5, and the hot air inside the first connecting pipe 7 can enter the inside of the equipment housing 1 through the air inlet pipe 8; At this time, the solenoid valve 21 is opened to allow the potassium permanganate solution in the oxidant storage box 18 to enter the second connecting pipe 19, and the potassium permanganate solution in the second connecting pipe 19 can be sprayed to the plastic diaphragm fragments in the device housing 1 through the spray head 20. At this time, the surface of the plastic diaphragm fragments can be oxidized under the action of the oxidant and the temperature, and at the same time, the first drive motor 4 can drive the stirring rod 3 to rotate when it is running, so that the oxidation speed of the surface of the plastic diaphragm fragments can be accelerated; Then the second drive motor 16 can be operated. When the second drive motor 16 is operated, the sector gear 13 can be driven to rotate through the rotating rod 14. The rotation of the sector gear 13 can drive the partition 11 to rotate through the sliding rod 12. At the same time, the rotation of the sector gear 13 can drive another sector gear 13 to rotate. The rotation of another sector gear 13 can drive another partition 11 to rotate through the partition 11 sliding rod 12. At this time, the plastic diaphragm fragments on the upper layer of the equipment housing 1 can fall into the inside of the pickling tank 22. At this time, the plastic diaphragm fragments can be pickled by acetic acid in the pickling tank 22, so that the oxide layer on the surface of the plastic diaphragm fragments can be decomposed by chemical reaction; When the first conveyor belt 23 is in operation, the plastic diaphragm fragments suspended on the surface of the pickling tank 22 can be conveyed to a high place, and then the plastic diaphragm fragments on the surface of the first conveyor belt 23 can fall from the end to the surface of the second conveyor belt 24. At this time, the second conveyor belt 24 can drive the plastic diaphragm fragments to be conveyed. After the water valve 27 is opened, the water inside the tap water pipe 28 can enter the inside of the water spraying pipe 25 through the connecting water pipe 26. The water inside the water spraying pipe 25 can be sprayed out from the bottom side, and the sprayed water can rinse the plastic diaphragm fragments. When the rinsed plastic diaphragm fragments are conveyed to the inner side of the dryer 29 by the second conveyor belt 24, the plastic diaphragm fragments can be dried by the dryer 29, and the dried plastic diaphragm fragments can be collected after being conveyed to the end by the second conveyor belt 24.

[0036] Finally, it should be noted that the above are only preferred embodiments of the present invention and are 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 replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery pack plastic diaphragm processing and decomposition device, comprising a device housing (1) and a feed inlet (2), characterized in that: The upper surface of the device housing (1) is provided with a feed port (2); a stirring rod (3) is passed through the interior of the device housing (1); a first bearing (30) is installed between the stirring rod (3) and the device housing (1); a first drive motor (4) is installed between the end of the stirring rod (3) and the device housing (1); a blower (5) is installed on the upper surface of the device housing (1); an air outlet of the blower (5) is connected to a heating pipe (6); an electric heating wire (9) is passed through the interior of the heating pipe (6); an end of the heating pipe (6) is connected to a first connecting pipe (7); the bottom side of the first connecting pipe (7) is connected to an air inlet pipe (8); the air inlet pipe (8) passes through the surface of the device housing (1) and extends to the device housing (1); ), the side surface of the equipment housing (1) is connected to an oxidant storage box (18), the side surface of the oxidant storage box (18) is connected to a second connecting pipe (19), the side surface of the second connecting pipe (19) is installed with a spray head (20), the middle part of the second connecting pipe (19) is installed with a solenoid valve (21), the interior of the equipment housing (1) is provided with an automatic opening and closing mechanism, the bottom side of the equipment housing (1) is provided with a pickling tank (22), the interior of the equipment housing (1) is provided with a first conveyor belt (23), the interior of the equipment housing (1) is provided with a second conveyor belt (24), the surface of the second conveyor belt (24) is provided with a dryer (29), and the surface of the second conveyor belt (24) is provided with a water washing mechanism.

2. A battery pack plastic diaphragm processing and decomposition device according to claim 1, characterized in that: Two stirring rods (3) are provided, and the stirring rods (3) form a rotating structure with the device housing (1) through the first bearing (30).

3. A battery pack plastic diaphragm processing and decomposition device according to claim 1, characterized in that: The heating tube (6), the first connecting tube (7) and the air inlet tube (8) form a communication structure, and the electric heating wire (9) is made of an iron-chromium-aluminum-containing molybdenum insulating material.

4. A battery pack plastic diaphragm processing and decomposition device according to claim 1, characterized in that: The solenoid valve (21) is a pilot-operated solenoid valve, and the model of the solenoid valve (21) is PU225-04.

5. The battery pack plastic diaphragm processing and decomposition device according to claim 1, characterized in that: The automatic opening and closing mechanism comprises a hinge (10), a partition (11), a sliding rod (12), a sector gear (13), a rotating rod (14), a second bearing (15), a second driving motor (16) and a limiting groove (17); two sets of hinges (10) are installed on the inner wall of the device housing (1); the side surfaces of the two sets of hinges (10) are respectively connected to a partition (11); the ends of the two partitions (11) are respectively connected to the sliding rod (12); the limiting groove (17) is provided on the surface of the device housing (1) near the sliding rod (12); and the ends of the two sliding rods (12) are connected to a sector gear (13).

6. A battery pack plastic diaphragm processing and decomposition device according to claim 5, characterized in that: A rotating rod (14) is connected and penetrated at the center of the sector gear (13); a second bearing (15) is installed between the rotating rod (14) and the device housing (1); and a second drive motor (16) is installed between the end of the rotating rod (14) and the device housing (1).

7. A battery pack plastic diaphragm processing and decomposition device according to claim 6, characterized in that: The partition plate (11) forms a rotating structure with the device housing (1) via a hinge (10), and the sliding rod (12) forms a sliding connection with the device housing (1) via a limiting groove (17).

8. A battery pack plastic diaphragm processing and decomposition device according to claim 7, characterized in that: A meshing structure is formed between the two sector gears (13), and a rotating structure is formed between the sector gear (13) and the second bearing (15) via a rotating rod (14).

9. The battery pack plastic diaphragm processing and decomposition device according to claim 1, characterized in that: The water washing mechanism comprises a water spraying pipe (25), a connecting water pipe (26), a water valve (27) and a tap water pipe (28); the surface of the second conveyor belt (24) is provided with a water spraying pipe (25); the end of the water spraying pipe (25) is connected to the connecting water pipe (26); the middle of the connecting water pipe (26) is provided with a water valve (27); and the end of the connecting water pipe (26) is connected to the tap water pipe (28).

10. A battery pack plastic diaphragm processing and decomposition device according to claim 9, characterized in that: The shower pipe (25), the connecting water pipe (26) and the tap water pipe (28) form a communication structure.

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