Graphene alloy positive electrode sheet processing slurry coating device

Abstract

This utility model discloses a slurry coating device for processing graphene alloy cathode sheets, relating to the field of graphene alloy cathode sheet processing technology. It includes a housing and a metal current collector, and further comprises: an unwinding assembly disposed on the housing; a coating assembly disposed on the housing for coating slurry onto the metal current collector; a compaction assembly disposed on the housing for compressing the slurry on the metal current collector to a specified thickness; an edge removal assembly disposed on the housing for removing slurry exceeding the edge of the metal current collector; and a detection assembly disposed on the housing for detecting the thickness of the slurry on the metal current collector. First, a drive motor drives a bidirectional threaded rod, causing a slider on the bidirectional threaded rod to move a scraper to the edge of the metal current collector to remove slurry overflowing from the edge. Then, a heater cleans the scraper, enabling the coating device to perform automatic edge trimming, thus improving product quality.

Description

Technical Field

[0001] This utility model relates to the field of graphene alloy cathode material processing technology, and in particular to a slurry coating device for processing graphene alloy cathode materials. Background Technology

[0002] Graphene-based lithium-ion batteries are lithium-ion batteries that use graphene materials as electrodes to improve charging and discharging performance. Graphene's excellent conductivity and unique structure enhance its charging and discharging performance. A slurry coating device, on the other hand, is a key piece of equipment and its auxiliary system used in the manufacturing of graphene-containing alloy cathode sheets to uniformly, continuously, and stably coat a slurry containing graphene, alloy materials, conductive agents, binders, and solvents onto the surface of a metal current collector.

[0003] A Chinese patent with authorization announcement number CN115846115A discloses a graphene lithium battery electrode processing device, including a base plate. A support leg is fixedly connected to the lower surface of the base plate, and a lower support plate is fixedly connected to the inner surface of the support leg. A first telescopic rod is fixedly connected to the inner surface of the lower support plate, and a second ring is fixedly connected to the output end of the first telescopic rod. A first rotating shaft is rotatably connected to the inner surface of the second ring, and a vertical rod is fixedly connected to the upper surface of the base plate. This graphene lithium battery electrode processing device, through the design of a coating device and a drying device, enables coating and drying on both sides during use. A limiting device facilitates processing. The design of a liftable first rotating shaft, two extrusion devices, and a measuring device allows for rapid measurement after extrusion, further facilitating processing.

[0004] Although the above-mentioned device can automatically adjust the thickness of the extruded slurry, some of the slurry will be squeezed out of the edge of the metal current collector after being extruded. The above-mentioned device does not have a trimming structure, which makes the width of the produced positive electrode sheet uneven, thereby reducing the product quality. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a slurry coating device for processing graphene alloy positive electrode sheets, which aims to solve the technical problem that the above-mentioned devices do not have a trimming structure, thus reducing product quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A slurry coating apparatus for processing graphene alloy cathode sheets includes a housing, a metal current collector, and further includes:

[0008] An unwinding assembly, disposed on the housing, is used to carry and release the wound metal current collector;

[0009] A coating assembly, disposed on the housing, is used to coat a slurry onto a metal current collector;

[0010] A compaction assembly, disposed on the housing, is used to compress the slurry on the metal current collector to a specified thickness;

[0011] An edge removal component, disposed on the housing, is used to remove slurry that extends beyond the edge of the metal current collector;

[0012] A detection component, mounted on the housing, is used to detect the thickness of the slurry on the metal current collector.

[0013] Preferably, the unwinding assembly includes:

[0014] A drive motor is fixedly connected to the housing;

[0015] The drive roller is rotatably connected to the housing, the drive roller is fixedly connected to the output shaft of the drive motor, and the drive roller is detachably connected to the metal current collector;

[0016] The driven roller is rotatably connected to the housing, and the driven roller is detachably connected to the metal current collector;

[0017] An auxiliary roller is rotatably connected to the housing and is rollingly connected to the metal current collector;

[0018] An electro-hydraulic actuator is fixedly connected to the housing;

[0019] An adjusting roller is mounted on the electro-hydraulic actuator and rotatably connected to the electro-hydraulic actuator. The adjusting roller is also rotatably connected to the metal current collector.

[0020] Preferably, the coating assembly includes:

[0021] A slurry tank is mounted on the machine casing and is fixedly connected to the machine casing;

[0022] A booster pump is fixedly connected to the housing;

[0023] The first transport pipe is fixedly connected to the slurry tank, and the first transport pipe is fixedly connected to the booster pump;

[0024] The second transport pipe is fixedly connected to the booster pump;

[0025] The diverter is fixedly connected to the second transport pipe;

[0026] A slit die head is disposed on the distributor and fixedly connected to the distributor;

[0027] A heating fan is fixedly connected to the housing;

[0028] Ventilation slots are provided on the housing.

[0029] Preferably, the compaction component includes:

[0030] The first guide roller is rotatably connected to the housing, and the first guide roller is rollingly connected to the metal current collector;

[0031] A first extrusion roller is disposed on the housing and rotatably connected to the housing, and the first extrusion roller is rotatably connected to the metal current collector.

[0032] A hydraulic cylinder is fixedly connected to the housing;

[0033] A hydraulic rod is slidably connected to the hydraulic cylinder;

[0034] The mounting frame is slidably connected to the housing, and the mounting frame is fixedly connected to the hydraulic rod.

[0035] A second extrusion roller is disposed on the mounting frame and is rotatably connected to the mounting frame.

[0036] Preferably, the edge removal component includes:

[0037] A servo motor is fixedly connected to the housing;

[0038] A bidirectional threaded rod is rotatably connected to the housing;

[0039] A slider is slidably connected to the housing, and the slider is threadedly connected to the bidirectional threaded rod.

[0040] The scraper is fixedly connected to the slider;

[0041] The heater is fixedly connected to the slider.

[0042] Preferably, the detection component includes:

[0043] The second guide roller is rotatably connected to the housing, and the second guide roller is rollingly connected to the metal current collector;

[0044] A mounting base plate is installed on the housing and fixedly connected to the housing.

[0045] The thickness measuring instrument is fixedly connected to the mounting base plate.

[0046] Preferably, the bidirectional threaded rod is fixedly connected to the output shaft of the servo motor.

[0047] Preferably, the heater is in close contact with the blade of the scraper.

[0048] Preferably, there are two slit dies, which are symmetrically distributed on the distributor, and the two slit dies are respectively located on the back and front of the metal current collector.

[0049] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0050] By setting up the edge trimming component, the drive motor first drives the bidirectional threaded rod, which in turn drives the slider on the bidirectional threaded rod to move the scraper to the edge of the metal current collector to remove the slurry that overflows from the edge of the metal current collector. Then, the heater is used to clean the scraper, thereby enabling the coating device to perform automatic edge trimming and improve product quality. Attached Figure Description

[0051] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 A three-dimensional structural schematic diagram of a slurry coating device for processing graphene alloy cathode sheets is shown.

[0053] Figure 2 A first cross-sectional view of a slurry coating apparatus for processing graphene alloy cathode sheets is shown.

[0054] Figure 3 A second cross-sectional view of a slurry coating apparatus for processing graphene alloy cathode sheets is shown.

[0055] Figure 4 It shows Figure 3 A magnified view of a portion of point A in the middle.

[0056] Figure 5 A third cross-sectional view of a slurry coating apparatus for processing graphene alloy cathode sheets is shown.

[0057] Figure 6 It shows Figure 5 A magnified view of a portion of point B in the middle.

[0058] Figure 7 A fourth cross-sectional view of a slurry coating apparatus for processing graphene alloy cathode sheets is shown.

[0059] Legend:

[0060] 1. Housing; 2. Metal current collector; 3. Servo motor; 4. Bidirectional threaded rod; 5. Slider; 6. Scraper; 7. Heater; 8. Drive motor; 9. Driving roller; 10. Driven roller; 11. Auxiliary roller; 12. Electro-hydraulic actuator; 13. Adjusting roller; 14. Slurry tank; 15. Booster pump; 16. First transport pipe; 17. Second transport pipe; 18. Diverter; 19. Slit die head; 20. Heating fan; 21. Ventilation slot; 22. First guide roller; 23. First extrusion roller; 24. Hydraulic cylinder; 25. Hydraulic rod; 26. Mounting frame; 27. Second extrusion roller; 28. Second guide roller; 29. ​​Mounting base plate; 30. Thickness gauge. Detailed Implementation

[0061] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0062] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0065] Reference Figures 1 to 7 The present invention provides a further description of an embodiment of a slurry coating device for processing graphene alloy cathode sheets.

[0066] A slurry coating device for processing graphene alloy cathode sheets includes a housing 1, a metal current collector 2, and further includes:

[0067] An unwinding assembly, mounted on the housing 1, is used to carry and release the wound metal current collector 2. The unwinding assembly includes:

[0068] The drive motor 8 is fixedly connected to the housing 1;

[0069] The active roller 9 is rotatably connected to the housing 1. The active roller 9 is fixedly connected to the output shaft of the drive motor 8. The active roller 9 is detachably connected to the metal current collector 2.

[0070] Driven roller 10 is rotatably connected to housing 1, and driven roller 10 is detachably connected to metal current collector 2;

[0071] Auxiliary roller 11 is rotatably connected to the housing 1 and is rollingly connected to the metal current collector 2;

[0072] The electro-hydraulic actuator 12 is fixedly connected to the housing 1;

[0073] The adjusting roller 13 is mounted on the electro-hydraulic actuator 12 and is rotatably connected to the electro-hydraulic actuator 12. The adjusting roller 13 is also rotatably connected to the metal current collector 2.

[0074] When the drive motor 8 is started, the output shaft of the drive motor 8 rotates, which drives the active roller 9, which is fixedly connected to the output shaft of the drive motor 8, to rotate. This drives the metal current collector 2, which is detachably connected to the active roller 9, to perform a winding motion. The movement of the metal current collector 2 drives the metal current collector 2, which is detachably connected to the driven roller 10, to perform an unwinding operation, thereby achieving the effect of moving the metal current collector 2.

[0075] A coating assembly, disposed on the housing 1, is used to coat a slurry onto the metal current collector 2. The coating assembly includes:

[0076] The slurry tank 14 is mounted on the housing 1 and is fixedly connected to the housing 1;

[0077] Booster pump 15 is fixedly connected to housing 1;

[0078] The first transport pipe 16 is fixedly connected to the slurry tank 14, and the first transport pipe 16 is fixedly connected to the booster pump 15.

[0079] The second transport pipe 17 is fixedly connected to the booster pump 15;

[0080] Diverter 18 is fixedly connected to the second transport pipe 17;

[0081] A slit die 19 is disposed on the distributor 18 and fixedly connected to the distributor 18. There are two slit dies 19, which are symmetrically distributed on the distributor 18, and the two slit dies 19 are respectively disposed on the back and front of the metal current collector 2.

[0082] Heating fan 20 is fixedly connected to housing 1;

[0083] Ventilation slot 21 is provided on the housing 1.

[0084] The heating fan 20 is started, and the hot air generated by the heating fan 20 is blown into the inside of the housing 1 through the ventilation slot 21 to preheat the metal current collector 2. Then the booster pump 15 is started, and the booster pump 15 pressurizes and transports the graphene alloy slurry in the slurry tank 14 from the first transport pipe 16 to the second transport pipe 17. The slurry is then flowed by the distributor 18 into the slit dies 19 distributed on the front and back of the metal current collector 2. The slit dies 19 then squeeze the slurry onto the moving metal current collector 2 to achieve the coating effect.

[0085] A compaction assembly, disposed on the housing 1, is used to compress the slurry on the metal current collector 2 to a specified thickness. The compaction assembly includes:

[0086] The first guide roller 22 is rotatably connected to the housing 1, and the first guide roller 22 is rollingly connected to the metal current collector 2;

[0087] The first extrusion roller 23 is disposed on the housing 1 and rotatably connected to the housing 1. The first extrusion roller 23 is rotatably connected to the metal current collector 2.

[0088] Hydraulic cylinder 24 is fixedly connected to the machine housing 1;

[0089] Hydraulic rod 25 is slidably connected to hydraulic cylinder 24;

[0090] Mounting frame 26 is slidably connected to housing 1, and mounting frame 26 is fixedly connected to hydraulic rod 25;

[0091] The second extrusion roller 27 is mounted on the mounting frame 26 and is rotatably connected to the mounting frame 26.

[0092] Start the hydraulic cylinder 24. The liquid in the hydraulic cylinder 24 pushes the hydraulic rod 25, which is slidably connected to the hydraulic cylinder 24, downward. This causes the mounting frame 26, which is fixedly connected to the hydraulic rod 25, to move. The movement of the mounting frame 26 causes the second extrusion roller 27, which is fixedly connected to the mounting frame 26, to move downward until the distance between the second extrusion roller 27 and the first extrusion roller 23 is the same as the sum of the thickness of the metal current collector 2 and the required slurry thickness. Then, close the hydraulic cylinder 24. The metal current collector 2 coated with slurry moves to the compaction component at the adjusted distance and is compacted to the set thickness, thus achieving the effect of adjusting the thickness.

[0093] An edge removal assembly, disposed on the housing 1, is used to remove slurry extending beyond the edge of the metal current collector 2. The edge removal assembly includes:

[0094] Servo motor 3 is fixedly connected to housing 1;

[0095] The bidirectional threaded rod 4 is rotatably connected to the housing 1, and the bidirectional threaded rod 4 is fixedly connected to the output shaft of the servo motor 3.

[0096] Slider 5 is slidably connected to housing 1, and slider 5 is threadedly connected to bidirectional threaded rod 4;

[0097] The scraper 6 is fixedly connected to the slider 5;

[0098] The heater 7 is fixedly connected to the slider 5, and the heater 7 is in close contact with the blade of the scraper 6.

[0099] The servo motor 3 is started, and the output shaft of the servo motor 3 rotates, which drives the bidirectional threaded rod 4, which is fixedly connected to the output shaft of the servo motor 3, to rotate. This drives the slider 5, which is threadedly connected to the bidirectional threaded rod 4 and restricted by the sliding housing 1, to slide. The sliding of the slider 5 drives the scraper 6, which is fixedly connected to the slider 5, to slide until the blade of the scraper 6 contacts the edge of the metal current collector 2. The servo motor 3 is then turned off, and the scraper 6 scrapes off the slurry that has overflowed from the edge of the metal current collector 2. After production is completed, the heater 7 is started, and the heater 7 heats the scraper 6 until the slurry remaining on the scraper 6 melts and falls off the scraper 6 completely, achieving the effect of trimming and cleaning the scraper 6.

[0100] By setting up the edge trimming component, the drive motor 8 first drives the bidirectional threaded rod 4, so that the slider 5 on the bidirectional threaded rod 4 drives the scraper 6 to stick to the edge of the metal current collector 2 to remove the slurry that overflows from the edge of the metal current collector 2. Then, the heater 7 cleans the scraper 6, thereby enabling the coating device to perform automatic edge trimming work and improve product quality.

[0101] A detection component, mounted on the housing 1, is used to detect the slurry thickness on the metal current collector 2. The detection component includes:

[0102] The second guide roller 28 is rotatably connected to the housing 1, and the second guide roller 28 is rollingly connected to the metal current collector 2;

[0103] The mounting base plate 29 is mounted on the housing 1 and is fixedly connected to the housing 1.

[0104] Thickness measuring instrument 30 is fixedly connected to mounting base plate 29.

[0105] When the metal current collector 2 moves past the thickness detector 30 via the second guide roller 28 connected by rolling, the thickness detector 30 detects the thickness of the metal current collector 2 to check whether it is qualified, thus achieving the effect of automatic detection.

[0106] Working principle: When the drive motor 8 is started, the output shaft of the drive motor 8 rotates, which drives the active roller 9, which is fixedly connected to the output shaft of the drive motor 8, to rotate, thereby driving the metal current collector 2, which is detachably connected to the active roller 9, to perform a winding motion. The movement of the metal current collector 2 drives the metal current collector 2, which is detachably connected to the driven roller 10, to perform an unwinding operation.

[0107] While the unwinding operation is underway, the hydraulic cylinder 24 is activated. The liquid in the hydraulic cylinder 24 pushes the hydraulic rod 25, which is slidably connected to the hydraulic cylinder 24, downward, thereby driving the mounting frame 26, which is fixedly connected to the hydraulic rod 25, to move. The movement of the mounting frame 26 drives the second extrusion roller 27, which is fixedly connected to the mounting frame 26, to move downward until the distance between the second extrusion roller 27 and the first extrusion roller 23 is the same as the sum of the thickness of the metal current collector 2 and the required slurry thickness. Then the hydraulic cylinder 24 is closed.

[0108] The heating fan 20 is started. The hot air generated by the heating fan 20 is blown into the inside of the housing 1 through the ventilation slot 21 and preheats the metal current collector 2. Then the booster pump 15 is started. The booster pump 15 pressurizes and transports the graphene alloy slurry in the slurry tank 14 from the first transport pipe 16 to the second transport pipe 17. The slurry is then flowed by the distributor 18 into the slit dies 19 distributed on the front and back of the metal current collector 2. The slit dies 19 then squeeze the slurry onto the moving metal current collector 2 to achieve the coating effect.

[0109] The metal current collector 2 coated with slurry is moved to the compaction component at the adjusted distance for compaction. During compaction, some slurry overflows from the edge of the metal current collector 2. At this time, the servo motor 3 is started. The output shaft of the servo motor 3 rotates, which drives the bidirectional threaded rod 4 fixedly connected to the output shaft of the servo motor 3 to rotate. This drives the slider 5, which is threadedly connected to the bidirectional threaded rod 4 and restricted by the sliding housing 1, to slide. The sliding of the slider 5 drives the scraper 6 fixedly connected to the slider 5 to slide until the blade of the scraper 6 contacts the edge of the metal current collector 2. The servo motor 3 is then turned off. The scraper 6 scrapes off the slurry that has overflowed from the edge of the metal current collector 2, achieving a trimming effect. After production is completed, the heater 7 is started. The heater 7 heats the scraper 6 until the slurry remaining on the scraper 6 melts and completely falls off the scraper 6, achieving the cleaning effect of the scraper 6.

[0110] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A slurry coating device for processing a graphene alloy positive electrode sheet, comprising a casing (1), a metal current collector (2), characterized in that, Also includes: An unwinding assembly is disposed on the housing (1) and is used to carry and release the wound metal current collector (2). A coating assembly, disposed on the housing (1), is used to coat the slurry onto the metal current collector (2); A compaction assembly, disposed on the housing (1), is used to compress the slurry on the metal current collector (2) to a specified thickness; An edge removal assembly, disposed on the housing (1), is used to remove slurry that extends beyond the edge of the metal current collector (2); The edge removal component includes: A servo motor (3) is fixedly connected to the housing (1); A bidirectional threaded rod (4) is rotatably connected to the housing (1); The slider (5) is slidably connected to the housing (1), and the slider (5) is threadedly connected to the bidirectional threaded rod (4); The scraper (6) is fixedly connected to the slider (5); The heater (7) is fixedly connected to the slider (5); The detection component is disposed on the housing (1) and is used to detect the thickness of the slurry on the metal current collector (2).

2. The graphene alloy positive electrode sheet processing slurry coating device according to claim 1, characterized in that, The unwinding assembly includes: The drive motor (8) is fixedly connected to the housing (1); The active roller (9) is rotatably connected to the housing (1), the active roller (9) is fixedly connected to the output shaft of the drive motor (8), and the active roller (9) is detachably connected to the metal current collector (2); Driven roller (10) is rotatably connected to the housing (1), and driven roller (10) is detachably connected to the metal current collector (2); An auxiliary roller (11) is rotatably connected to the housing (1), and the auxiliary roller (11) is rollingly connected to the metal current collector (2); An electro-hydraulic actuator (12) is fixedly connected to the housing (1); An adjusting roller (13) is disposed on the electro-hydraulic actuator (12) and is rotatably connected to the electro-hydraulic actuator (12). The adjusting roller (13) is rotatably connected to the metal current collector (2).

3. The graphene alloy positive electrode sheet processing slurry coating device according to claim 2, characterized in that, The coating assembly includes: The slurry tank (14) is installed on the housing (1) and is fixedly connected to the housing (1); A booster pump (15) is fixedly connected to the housing (1); The first transport pipe (16) is fixedly connected to the slurry tank (14), and the first transport pipe (16) is fixedly connected to the booster pump (15); The second transport pipe (17) is fixedly connected to the booster pump (15); The distributor (18) is fixedly connected to the second transport pipe (17); A slit die head (19) is disposed on the distributor (18) and fixedly connected to the distributor (18); A heating fan (20) is fixedly connected to the housing (1); Ventilation slot (21) is provided on the housing (1).

4. The graphene alloy positive electrode sheet processing slurry coating device according to claim 3, characterized by, The compaction component includes: The first guide roller (22) is rotatably connected to the housing (1), and the first guide roller (22) is rollingly connected to the metal current collector (2); The first extrusion roller (23) is disposed on the housing (1) and rotatably connected to the housing (1). The first extrusion roller (23) is rotatably connected to the metal current collector (2). Hydraulic cylinder (24) is fixedly connected to the housing (1); The hydraulic rod (25) is slidably connected to the hydraulic cylinder (24); The mounting frame (26) is slidably connected to the housing (1), and the mounting frame (26) is fixedly connected to the hydraulic rod (25); The second extrusion roller (27) is disposed on the mounting frame (26) and is rotatably connected to the mounting frame (26).

5. The graphene alloy positive electrode sheet processing slurry coating device according to claim 4, characterized by, The detection component includes: The second guide roller (28) is rotatably connected to the housing (1), and the second guide roller (28) is rollingly connected to the metal current collector (2); Mounting base plate (29) is set on the housing (1) and fixedly connected to the housing (1); The thickness measuring instrument (30) is fixedly connected to the mounting base plate (29).

6. The slurry coating device for graphene alloy positive electrode sheet processing according to claim 5, characterized in that, The bidirectional threaded rod (4) is fixedly connected to the output shaft of the servo motor (3).

7. The graphene alloy positive electrode sheet processing slurry coating device according to claim 6, characterized by, The heater (7) is in close contact with the blade of the scraper (6). 8.The slurry coating device for graphene alloy positive electrode sheet processing of claim 7, wherein There are two slit dies (19), which are symmetrically distributed on the distributor (18), and the two slit dies (19) are respectively located on the back and front of the metal current collector (2).

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