Lithium-sulfur battery pole piece coating, drying and integrating device

Abstract

The utility model discloses a lithium sulfur battery pole piece coating drying integration device, including base, one side of base is installed with material guiding mechanism, and the other side of base is installed with winding mechanism, and the upper end surface of base is installed with U type seat, and one side of U type seat inside is installed with coating tank, and the upper end surface of coating tank is installed with feeding hopper, and the inboard of coating tank is installed with conveying mechanism, and the lower end surface of coating tank is installed with a plurality of unloading head even, one side of coating tank is provided with the slot, and the inboard of slot is swingly provided with the plugboard, and the lower end surface of plugboard is installed with the mounting seat through first electric push rod, and the inboard of mounting seat is provided with the scraper. The utility model discloses through being provided with conveying mechanism and the unloading head of different hole diameter, can realize balanced coating, and through being provided with dustproof board, has improved drying effect, and simultaneously can dismouting to dustproof board, is convenient for its cleaning, guarantees subsequent dustproof effect.

Description

Technical Field

[0001] This utility model relates to the field of battery electrode processing technology, specifically to an integrated device for coating and drying lithium-sulfur battery electrodes. Background Technology

[0002] Electrode coating is a core process in lithium-sulfur battery manufacturing, and its quality directly affects the battery's capacity, safety, and cycle life. Coating involves uniformly applying a well-stirred slurry onto a current collector and then drying it to remove the solvent, thus forming the electrode sheet.

[0003] However, in most existing lithium-sulfur battery electrode coating devices, when the slurry enters the coating tube through the feeding hole, the slurry tends to concentrate and seep out near the coating nozzle in the middle of the coating tube. This results in less slurry at both ends of the coating tube, leading to uneven coating of the lithium-sulfur battery electrode and affecting the electrical performance of the lithium-sulfur battery. Furthermore, the device cannot prevent dust during the drying process of the lithium-sulfur battery electrode, making the surface of the lithium-sulfur battery electrode easily contaminated by dust or impurities, affecting normal use. Therefore, it does not meet the existing requirements. To address this, we propose an integrated coating and drying device for lithium-sulfur battery electrodes. Utility Model Content

[0004] The purpose of this invention is to provide an integrated coating and drying device for lithium-sulfur battery electrodes, in order to solve the problems mentioned in the background art. In most existing lithium-sulfur battery electrode coating devices, when the slurry enters the coating tube through the feeding hole, the slurry tends to concentrate and seep out near the coating nozzle in the middle of the coating tube, resulting in less slurry at both ends of the coating tube and uneven coating of the lithium-sulfur battery electrodes, which affects the electrical performance of the lithium-sulfur battery. Furthermore, during the drying process of the lithium-sulfur battery electrodes, dust prevention is not possible, which easily leads to the surface of the lithium-sulfur battery electrodes being contaminated by dust or impurities, affecting normal use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated coating and drying device for lithium-sulfur battery electrodes, comprising a base, a material guiding mechanism installed on one side of the base, a winding mechanism installed on the other side of the base, a U-shaped seat installed on the upper surface of the base, a paint box installed on one side inside the U-shaped seat, a feeding hopper installed on the upper surface of the paint box, a conveying mechanism installed on the inner side of the paint box, and multiple feeding heads evenly installed on the lower surface of the paint box. A slot is provided on one side of the paint box, an insert plate is movably installed on the inner side of the slot, an mounting seat is installed on the lower surface of the insert plate via a first electric push rod, a scraper is provided on the inner side of the mounting seat, a through groove is provided on the other side of the slot, a dustproof plate is movably installed on the upper part of the through groove via a movable disassembly mechanism, an air pump is installed in the middle of the through groove, a housing is provided below the air pump, the housing is connected to the inner wall of the U-shaped seat via a second electric push rod, and multiple air jets are evenly installed on the lower surface of the housing.

[0006] Preferably, the winding mechanism includes two fixed plates, which are fixedly connected to the outer surface of the base. A winding roller is rotatably connected to one side of the two fixed plates. A winding motor for rotating the winding roller is installed on the front end face of one of the fixed plates. The material guiding mechanism includes two square plates, which are fixedly connected to the outer surface of the base. A material guiding roller is rotatably connected to one side of the two square plates.

[0007] Preferably, a sealing cover is threadedly connected above the outer surface of the feeding hopper, and square blocks are installed on both the front and back sides of the outer surface of the insert plate. Four square slots are provided above both sides of the inner wall of the slot, and the square blocks are inserted into the inner side of the square slots. A handle is installed on the upper end face of the insert plate, and the mounting base is connected to the scraper by bolts.

[0008] Preferably, the conveying mechanism includes a rotating shaft with helical blades fitted on its outer surface. A rotary motor for rotating the shaft is installed in the front of the paint tank through a cavity. The diameter of the discharge head increases sequentially from the middle to the front and back. A solenoid valve is installed on the inner side of the discharge head.

[0009] Preferably, the air pump is fixedly connected to the inner wall of the channel via a support frame, one end of the air pump is connected to the housing via a retractable hose, and an electric heating element is installed on the inner side of the housing.

[0010] Preferably, the movable disassembly mechanism includes a sliding plate and a cross plate. The sliding plate is installed in front of and behind the through groove via a strip groove. The sliding plate is connected to the inner wall of the strip groove by two second springs. A retaining plate is installed on the opposite side of the outer surface of the two sliding plates.

[0011] Preferably, the front and rear faces of the dustproof plate are provided with slots, the strip slot and the through slot are connected by a connecting slot, the card plate can pass through the connecting slot, the card plate can be snapped into the inside of the slot, the horizontal plate is located at the four corners below the dustproof plate, the horizontal plate is fixedly connected to the inner wall of the through slot, and a first spring is installed on the upper end face of the horizontal plate.

[0012] Preferably, a collection groove is provided on one side of the upper surface of the base, a box is installed on the rear end face of the base, and a liquid pump is installed on the rear end face of the box. The liquid pump is connected to the box through a first pipe, and the box is connected to the rear end face of the feeding hopper through a second connecting pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model is equipped with a conveying mechanism and a feeding head, with the diameter of the feeding head increasing sequentially from the middle to the front and back. During the coating process, by controlling a rotary motor, the rotary motor drives the rotating shaft to rotate. The rotation of the spiral blades actively pushes the coating concentrated in the middle to both ends, forcibly achieving the lateral distribution of the coating. By reducing the diameter of the middle feeding head to increase its flow resistance, more coating flows to the feeding heads at both ends with lower resistance, thereby achieving balanced discharge. This utility model can achieve balanced coating by setting up a conveying mechanism and feeding heads with different diameters.

[0015] 2. This utility model, by providing a dustproof plate, can prevent dust from entering the air during the drying of the battery electrodes, thus avoiding contamination of the battery electrodes. Furthermore, by providing a movable disassembly mechanism, the dustproof plate can be disassembled and installed, facilitating cleaning and ensuring the dustproof effect during subsequent use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a main sectional view of the entire utility model;

[0018] Figure 3 This is a partial structural schematic diagram of the groove of this utility model;

[0019] Figure 4 This is a side sectional view of the entire utility model;

[0020] Figure 5 This is a partial structural diagram of the disassembly mechanism of this practical application.

[0021] In the diagram: 1. Base; 2. Winding mechanism; 201. Winding motor; 202. Winding roller; 203. Fixing plate; 3. U-shaped seat; 4. Dustproof plate; 5. Movable disassembly mechanism; 501. First spring; 502. Horizontal plate; 503. Strip groove; 504. Second spring; 505. Slide plate; 506. Card plate; 507. Card slot; 6. Insert plate; 7. Paint box; 8. Feeding hopper; 9. Material guiding mechanism; 901. Square plate; 902. Material guiding roller; 10. Slot; 11. First electric push rod; 12. Scraper; 13. Mounting seat; 14. Second electric push rod; 15. Air pump; 16. Housing; 17. Jet nozzle; 18. Conveying mechanism; 1801. Rotating shaft; 1802. Spiral blade; 1803. Rotary motor; 19. Discharge head; 20. Through groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] The winding motor 201 (model YEJ3-112M-4), the first electric push rod 11 (model LBP40), the second electric push rod 14 (model KA10-70), the air pump 15 (model 2XZ-0.25), the rotary motor 1803 (model YS7134), and the liquid pump (model IS200-150-400) mentioned in this utility model can all be purchased from the market or obtained through private customization.

[0024] Please see Figures 1 to 5 This utility model provides an embodiment of an integrated coating and drying device for lithium-sulfur battery electrodes, comprising a base 1, a guiding mechanism 9 mounted on one side of the base 1, a winding mechanism 2 mounted on the other side of the base 1, a U-shaped seat 3 mounted on the upper surface of the base 1, a coating tank 7 mounted on one side inside the U-shaped seat 3, a feeding hopper 8 mounted on the upper surface of the coating tank 7, a conveying mechanism 18 mounted on the inner side of the coating tank 7, multiple feeding heads 19 evenly mounted on the lower surface of the coating tank 7, and a slot 10 provided on one side of the coating tank 7. A side-mounted insert plate 6 is provided. A mounting base 13 is installed on the lower end face of the insert plate 6 via a first electric push rod 11. A scraper 12 is provided on the inner side of the mounting base 13. A through groove 20 is provided on the other side of the slot 10. A dustproof plate 4 is movably installed on the upper part of the through groove 20 via a movable disassembly mechanism 5. An air pump 15 is installed in the middle of the through groove 20. A housing 16 is provided below the air pump 15. The housing 16 is connected to the inner wall of the U-shaped seat 3 via a second electric push rod 14. Multiple jet nozzles 17 are evenly installed on the lower end face of the housing 16.

[0025] The winding mechanism 2 includes two fixed plates 203, which are fixedly connected to the outer surface of the base 1. A winding roller 202 is rotatably connected to one side of the two fixed plates 203. A winding motor 201 for rotating the winding roller 202 is installed on the front end face of one of the fixed plates 203. The material guiding mechanism 9 includes two square plates 901, which are fixedly connected to the outer surface of the base 1. A material guiding roller 902 is rotatably connected to one side of the two square plates 901, which improves the stability of the connection between the fixed plates 203, the square plates 901 and the base 1. When the winding motor 201 is working, it can drive the winding roller 202 to rotate and wind up the dried battery electrode sheets.

[0026] A sealing cover is threadedly connected to the upper surface of the feeding hopper 8. Square blocks are installed on the front and back of both sides of the outer surface of the insert plate 6. Four square slots are provided on the upper sides of both sides of the inner wall of the slot 10, and the square blocks are inserted into the inner side of the square slots. A handle is installed on the upper end face of the insert plate 6. The mounting base 13 is connected to the scraper 12 by bolts. The insert plate 6 can be removed from the inside of the slot 10 by using the handle. The scraper 12 can be removed from the inside of the mounting base 13 by loosening the bolts, so that the scraper 12 can be removed for cleaning.

[0027] The conveying mechanism 18 includes a rotating shaft 1801, with a spiral blade 1802 fitted on the outer surface of the rotating shaft 1801. A rotary motor 1803 for rotating the rotating shaft 1801 is installed in the front of the paint tank 7 through a cavity. The discharge head 19 has an increasing aperture from the middle to the front and back. A solenoid valve is installed on the inner side of the discharge head 19. The operation of the rotary motor 1803 can drive the rotating shaft 1801 to rotate. Through the rotation of the spiral blade 1802, the paint concentrated in the middle is actively pushed to both ends, forcing the lateral distribution of the paint. By reducing the aperture of the middle discharge head 19, its flow resistance is increased, so that more paint flows to the discharge heads 19 at both ends with lower resistance, achieving balanced discharge.

[0028] The air pump 15 is fixedly connected to the inner wall of the through groove 20 by a support frame. One end of the air pump 15 is connected to the housing 16 by a retractable hose. An electric heating element is installed on the inner side of the housing 16. When the air pump 15 is working, the gas enters the housing 16 through the retractable hose, is heated by the electric heating element, and is discharged through the jet nozzle 17.

[0029] The movable disassembly mechanism 5 includes a slide plate 505 and a horizontal plate 502. The slide plate 505 is installed in front of and behind the through groove 20 through a strip groove 503. The slide plate 505 is connected to the inner wall of the strip groove 503 by two second springs 504. A locking plate 506 is installed on the opposite side of the outer surface of the two slide plates 505. The locking plate 506 can be moved by sliding the slide plate 505.

[0030] The front and rear faces of the dustproof plate 4 are provided with slots 507. The strip groove 503 is connected to the through groove 20 through a connecting groove. The locking plate 506 can pass through the connecting groove and can be locked into the inside of the slot 507. The horizontal plate 502 is located at the four corners below the dustproof plate 4. The horizontal plate 502 is fixedly connected to the inner wall of the through groove 20. The upper end face of the horizontal plate 502 is equipped with a first spring 501. The locking plate 506 can limit the dustproof plate 4. When the locking plate 506 leaves the inside of the slot 507, the dustproof plate 4 is pushed upward into the through groove 20 under the action of the four first springs 501.

[0031] A collection trough is provided on one side of the upper surface of the base 1. A box is installed on the rear end face of the base 1, and a liquid pump is installed on the rear end face of the box. The liquid pump is connected to the box through a first pipe, and the box is connected to the rear end face of the feeding hopper 8 through a second connecting pipe. This allows the coating flowing down from the gap between the inner wall of the base 1 and the lithium battery electrode to be collected and then transported to the feeding hopper 8, thus avoiding waste of slurry.

[0032] When using this integrated coating and drying device for lithium-sulfur battery electrodes, the power is first turned on. First, the coating is poured into the coating box 7 through the feeding hopper 8. Then, the battery electrode is wound around the guide roller 902, and the other end of the battery electrode is attached to the take-up roller 202. The solenoid valve is opened. During the coating process, the rotary motor 1803 is controlled, driving the rotating shaft 1801 to rotate. The rotation of the spiral blades 1802 actively pushes the coating concentrated in the middle towards both ends, forcing a lateral distribution of the coating. By reducing the orifice diameter of the middle discharge head 19, its flow resistance is increased, allowing more coating to flow to the discharge heads 19 at both ends where the resistance is lower, thus achieving balanced discharge. The coated lithium-sulfur battery electrode is then wound by the take-up roller 202 and passed through the scraper 12, thus evenly coating the slurry on the surface of the electrode. It is then dried by hot air sprayed from the jet nozzle. Furthermore, by setting... The dustproof plate 4 can prevent dust from entering the air during the drying of the battery electrodes, thus avoiding contamination of the electrodes. A movable disassembly mechanism 5 allows for the disassembly and assembly of the dustproof plate 4. This is achieved by pulling two sliding plates 505 outwards. The movement of the sliding plates 505 moves the clamping plate 506, disengaging it from the inner side of the clamping slot 507 and releasing the restriction on the dustproof plate 4. Under the action of four first springs 501, the dustproof plate 4 is pushed upwards into the through slot 20. Workers can then remove the dustproof plate 4 from the inside of the through slot 20 for easy cleaning, ensuring effective dust prevention during subsequent use. This invention, through the provision of a conveying mechanism 18 and feeding heads 19 with different apertures, achieves even coating distribution. Furthermore, the dustproof plate 4 improves the drying effect and allows for easy disassembly and assembly for cleaning, ensuring continued dust prevention.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An integrated coating and drying device for lithium-sulfur battery electrodes, comprising a base (1), characterized in that: A material guiding mechanism (9) is installed on one side of the base (1), and a winding mechanism (2) is installed on the other side of the base (1). A U-shaped seat (3) is installed on the upper surface of the base (1). A paint box (7) is installed on one side inside the U-shaped seat (3). A feeding hopper (8) is installed on the upper surface of the paint box (7). A conveying mechanism (18) is installed on the inner side of the paint box (7). Multiple feeding heads (19) are evenly installed on the lower surface of the paint box (7). A slot (10) is provided on one side of the paint box (7). An insert plate (6) is movably arranged on the inner side of the slot (10). The lower end of the insert plate (6) A mounting base (13) is installed on the surface via a first electric push rod (11). A scraper (12) is provided on the inner side of the mounting base (13). A through groove (20) is provided on the other side of the slot (10). A dustproof plate (4) is movably installed on the upper part of the through groove (20) via a movable disassembly mechanism (5). An air pump (15) is installed in the middle of the through groove (20). A housing (16) is provided below the air pump (15). The housing (16) is connected to the inner wall of the U-shaped seat (3) via a second electric push rod (14). Multiple jet nozzles (17) are evenly installed on the lower end face of the housing (16).

2. The integrated coating and drying device for lithium-sulfur battery electrodes according to claim 1, characterized in that: The winding mechanism (2) includes two fixed plates (203), which are fixedly connected to the outer surface of the base (1). A winding roller (202) is rotatably connected to one side of the two fixed plates (203). A winding motor (201) for rotating the winding roller (202) is installed on the front end face of one of the fixed plates (203). The material guiding mechanism (9) includes two square plates (901), which are fixedly connected to the outer surface of the base (1). A material guiding roller (902) is rotatably connected to one side of the two square plates (901).

3. The integrated coating and drying device for lithium-sulfur battery electrodes according to claim 1, characterized in that: The outer surface of the feeding hopper (8) is connected to a sealing cover by a thread. Square blocks are installed on both sides of the outer surface of the insert plate (6). Four square slots are provided on the upper sides of both sides of the inner wall of the slot (10), and the square blocks are inserted into the inner side of the square slots. A handle is installed on the upper end of the insert plate (6). The mounting base (13) is connected to the scraper (12) by bolts.

4. The integrated coating and drying device for lithium-sulfur battery electrodes according to claim 1, characterized in that: The conveying mechanism (18) includes a rotating shaft (1801), with a spiral blade (1802) sleeved on the outer surface of the rotating shaft (1801). A rotary motor (1803) for rotating the rotating shaft (1801) is installed in the front of the paint tank (7) through a cavity. The discharge head (19) has an increasing diameter from the middle to the front and back. A solenoid valve is installed on the inner side of the discharge head (19).

5. The integrated coating and drying device for lithium-sulfur battery electrodes according to claim 1, characterized in that: The air pump (15) is fixedly connected to the inner wall of the through groove (20) by a support frame. One end of the air pump (15) is connected to the housing (16) by a retractable hose. An electric heating element is installed on the inner side of the housing (16).

6. The integrated coating and drying apparatus for lithium-sulfur battery electrodes according to claim 1, characterized in that: The movable disassembly mechanism (5) includes a sliding plate (505) and a horizontal plate (502). The sliding plate (505) is installed in front of and behind the through groove (20) through a strip groove (503). The sliding plate (505) is connected to the inner wall of the strip groove (503) by two second springs (504). A clamping plate (506) is installed on the opposite side of the outer surface of the two sliding plates (505).

7. The integrated coating and drying apparatus for lithium-sulfur battery electrodes according to claim 6, characterized in that: The front and rear faces of the dustproof plate (4) are provided with slots (507), the strip groove (503) and the through groove (20) are connected by a connecting groove, the card plate (506) can pass through the connecting groove, the card plate (506) can be inserted into the inside of the slot (507), the horizontal plate (502) is located at the four corners below the dustproof plate (4), the horizontal plate (502) is fixedly connected to the inner wall of the through groove (20), and the upper end face of the horizontal plate (502) is equipped with a first spring (501).

8. The integrated coating and drying apparatus for lithium-sulfur battery electrodes according to claim 1, characterized in that: A collection trough is provided on one side of the upper surface of the base (1), a box is installed on the rear end face of the base (1), and a liquid pump is installed on the rear end face of the box. The liquid pump is connected to the box through a first pipe, and the box is connected to the rear end face of the feeding hopper (8) through a second connecting pipe.

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