A pole piece brushing device

Abstract

The application belongs to the field of lithium batteries and cleaning, and relates to a pole piece powder brushing device, which comprises a support, a feeding mechanism, a powder brushing mechanism, a dust filtering box, a dust suction mechanism and an air guide assembly; the dust filtering box is internally provided with a dust filtering assembly and a material guide plate; one side of the dust filtering box is provided with a first controller, and the other side is provided with a corresponding detection plate; the detection plate can reciprocate relative to the first controller and is fixedly connected with a trigger piece; when the detection plate is in contact with the first controller, the first controller controls the feeding mechanism to change materials; the dust filtering assembly has a first state and a second state; when the dust filtering assembly is in the first state, the trigger piece is separated from a switch assembly of the air guide assembly, and the air guide assembly is opened; when the dust filtering assembly is in the second state, the trigger piece is in contact with the switch assembly of the air guide assembly, and the air guide assembly is closed. The application can automatically adjust the powder brushing time and intensity according to the dust amount on the surface of the pole piece, and ensure the consistency of the powder brushing effect.

Description

Technical Field

[0001] This invention belongs to the field of lithium batteries and cleaning, and relates to an electrode powder brushing device. Background Technology

[0002] The information disclosed in this background section is intended only to enhance understanding of the overall background of the invention and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] In the production process of lithium-ion batteries, the quality of the electrodes (positive and negative electrodes) directly affects the battery's performance and safety. During production, dust and impurities remain on the surface of the electrodes due to processes such as coating, rolling, and slitting. If this dust is not removed in time, it may lead to internal short circuits, increased self-discharge, or decreased capacity, seriously affecting the battery's performance and safety. Therefore, electrode powder brushing is an indispensable step in the lithium-ion battery production process.

[0004] Traditional electrode powder brushing equipment typically uses simple brush heads or bristles for powder application. While this can remove some dust, it presents several problems in practical applications. First, the powder brushing effect of traditional equipment is inconsistent. It cannot automatically adjust the brushing time and intensity based on the amount of dust on the electrode surface, resulting in some electrodes being incompletely powdered while others are over-powdered, affecting the coating quality. Second, the dust removal system of traditional equipment is inefficient, and dust generated during the powder brushing process can easily spread into the production environment, affecting workshop cleanliness and the health of operators. Furthermore, traditional equipment has a low degree of automation, requiring manual intervention and monitoring, which increases production costs and operational complexity.

[0005] In summary, there is an urgent need in the industry to develop electrode powder brushing equipment that features efficient powder brushing, automatic adjustment of powder brushing time and intensity, and efficient dust removal. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an electrode powder brushing device. This electrode powder brushing device can efficiently brush powder, automatically adjust brushing time and intensity, and has a highly efficient dust removal function, thus solving the problems of unstable brushing effect, low dust removal efficiency, and low automation in existing equipment.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A first aspect of the present invention provides an electrode powder brushing device, comprising: support; The support frame is equipped with a feeding mechanism; The feeding mechanism is equipped with a powder brushing mechanism; The powder brushing mechanism is equipped with a dust filter box; The dust filter box is connected to the dust collection mechanism via an air guide assembly; The dust filter box is equipped with a dust filter assembly and a guide plate; The dust filter box is equipped with a first controller on one side and a corresponding detection plate on the other side; the detection plate can reciprocate relative to the first controller and is fixedly connected to a trigger; when the detection plate contacts the first controller, the first controller controls the feeding mechanism to change the material. The dust filter assembly has a first state and a second state. When the dust filter assembly is in the first state, the trigger is separated from the switch assembly of the air guide assembly, and the air guide assembly is opened. When the dust filter assembly is in the second state, the trigger is in contact with the switch assembly of the air guide assembly, and the air guide assembly is closed.

[0008] Furthermore, the dust filtration assembly includes: a dust filter screen and an installation frame; the installation frame is provided with a dust filter screen, and a limit baffle and a telescopic cylinder are provided on the side of the installation frame near the first controller, and the telescopic cylinder is fixedly connected to the side wall of the dust filter box.

[0009] Furthermore, the guide plate is inclined and located below the dust filter assembly, with the discharge end of the guide plate connected to the discharge port, which is located on the side wall of the dust filter box.

[0010] Furthermore, the detection plate and the trigger are respectively fixed on the drive plate, the drive plate is connected to the electric telescopic rod, the end of the electric telescopic rod away from the drive plate is fixedly connected to the bracket, and the trigger and the switch assembly are respectively set.

[0011] Furthermore, the switch assembly includes: a vent block and a switch plate; the vent block is disposed inside the air guiding assembly, a positioning cylinder is disposed on the side wall of the air guiding assembly, and the switch plate is slidably disposed inside the positioning cylinder; the switch plate and the vent block are respectively provided with corresponding vents, and the end of the switch plate near the positioning cylinder is connected to the reset component.

[0012] Furthermore, the feeding mechanism includes: a material changing motor; a material carrying tray is provided on the material changing motor, a bearing component is provided on the material carrying tray, the bearing component can slide along the diameter direction of the material carrying tray and is elastically connected to the electrode; a sensing rod is also provided on one side of the material changing motor.

[0013] Furthermore, the bearing component includes: a bearing column; an elastic element is fitted on the outside of the bearing column; a positioning pin is movably disposed above the bearing column; the bottom of the bearing column is connected to a movable block; the movable block is connected to a linear motor; and the linear motor is connected to a second controller.

[0014] Furthermore, the elastic element is a spring.

[0015] Furthermore, the loading tray is provided with multiple mounting slots, and movable blocks are provided in the mounting slots.

[0016] Furthermore, the powder brushing mechanism includes: a dust collection frame; a dust collection frame is provided below the dust filter box, a mounting frame is provided inside the dust collection frame, a drive motor is provided on the mounting frame, and the brush disc is connected to the drive motor.

[0017] Furthermore, the air guiding assembly includes: an air transmission pipe and an air guiding cylinder; one end of the air transmission pipe is connected to the dust collection mechanism, and the other end is connected to the air guiding cylinder, and the end of the air guiding cylinder away from the air transmission pipe is connected to the air outlet at the top of the dust filter box.

[0018] Beneficial effects of the present invention (1) This invention, through the cooperation of a brush and a vacuum fan, can efficiently remove dust and impurities from the surface of the electrode. The invention is equipped with a detection plate and a controller, which can automatically adjust the brushing time and intensity according to the amount of dust on the electrode surface, ensuring consistent brushing results. When there is a lot of dust on the electrode surface, the equipment will automatically extend the brushing time to ensure thorough dust removal; when there is less dust, the equipment will automatically shorten the brushing time to avoid over-brushing. The invention is equipped with a high-efficiency vacuum fan and a dust filter box, which can effectively collect the dust generated during the brushing process, preventing dust from spreading into the production environment and maintaining a clean workshop. The dust filter box contains a dust filter screen and a guide plate. After being filtered by the dust filter screen, the dust slides into the dust collection box through the guide plate for subsequent processing.

[0019] (2) The present invention is equipped with a material changing motor and a linear motor, which can automatically replace the electrode sheets, reduce manual intervention, and improve production efficiency. After the electrode sheets are brushed with powder, the equipment will automatically remove the brushed electrode sheets and send the unbrushed electrode sheets into the brushing area to ensure the continuity of the production process and work efficiency.

[0020] (3) This invention provides an efficient, intelligent electrode powder brushing device with automatic adjustment function by organically combining technologies such as efficient powder brushing, automatic adjustment, intelligent control and efficient dust removal. It can not only effectively improve the powder brushing efficiency and effect, but also solve the problems of unstable powder brushing effect, low dust removal efficiency and low degree of automation of traditional equipment, and has broad application prospects and market value.

[0021] (4) The present invention has a simple structure, a high degree of automation, strong practicality, and is easy to promote. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. Exemplary embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0023] Figure 1This is a schematic diagram of the electrode powder brushing device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the dust filter box in the electrode powder brushing equipment of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the feeding device for the electrode powder brushing equipment of the present invention; Figure 4 This is a cross-sectional view of the electrode powder brushing device of the present invention; The components include: 1. Base plate; 2. Side plate; 3. Material changing motor; 4. Sensing rod; 5. Material tray; 6. Mounting slot; 7. Elastic element; 8. Support column; 9. Electrode plate; 10. Dust collection frame; 11. Dust filter box; 12. Brush plate; 13. Dust collection box; 14. First controller; 15. Air guide tube; 16. Air transmission pipe; 17. Dust collection fan; 18. Guide plate; 19. Drive plate; 20. Electric telescopic rod; 21. Detection plate; 22. Extension rod. 23. Retractable part; 24. Positioning cylinder; 25. Dust filter screen; 26. Limiting baffle; 27. Telescopic cylinder; 28. Fixing block; 29. ​​Mounting frame; 30. Fixing rod; 31. Drive motor; 32. Mounting bracket; 33. Guide plate; 34. Discharge port; 35. Movable block; 36. Sealing plate; 37. Positioning pin; 38. Ventilation block; 39. Switch plate; 40. Reset part; 41. Second controller; 42. Linear motor; 43. Mounting slot. Detailed Implementation

[0024] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] The present invention will be further described in detail below with reference to specific embodiments. It should be noted that the specific embodiments are explanations of the present invention and not limitations thereof.

[0026] like Figure 1-4As shown, taking the electrode sheet used in the lithium-ion battery production process as an example, the present invention provides an electrode sheet powder brushing device, including: a base plate 1, a side plate 2 fixedly connected to one side of the base plate 1, a material changing motor 3 fixedly connected to the base plate 1, a material carrier 5 fixedly connected to the top of the output shaft of the material changing motor 3, an installation groove 6 opened on the material carrier 5, a linear motor 41 fixedly connected to one side of the inner wall of the installation groove 6, a movable block 34 fixedly connected to the end of the output shaft of the linear motor 41, a bearing column 8 slidably passing through the movable block 34, an electrode sheet 9 set on the bearing column 8, a positioning pin 36 movably set on the bearing column 8 above the electrode sheet 9, an elastic element 7 sleeved on the bearing column 8 below the electrode sheet 9, a second controller 40 fixedly connected to the bottom of the material carrier 5 on one side of the linear motor 41, the second controller 40 being used to control the linear motor 41 to drive the movable block 34 to move, and a sensing rod 4 fixedly connected to the base plate 1 on one side of the material changing motor 3, the sensing rod 4 corresponding to the position of the second controller 40; A vacuum cleaner fan 17 is fixedly connected to one side of the side plate 2. An air inlet pipe 16 is fixedly connected to the air inlet of the vacuum cleaner fan 17. An air guide tube 15 is fixedly connected to one end of the air inlet pipe 16. An air vent block 37 is fixedly connected inside the air guide tube 15. A positioning cylinder 23 is fixedly connected to the outer wall of the air guide tube 15 below the air vent block 37. A switch plate 38 is slidably installed inside the positioning cylinder 23. One end of the switch plate 38 is slidably connected to the side wall of the air guide tube 15. An air vent is provided on the switch plate 38. A reset member 39 is fixedly connected between the end of the switch plate 38 and the positioning cylinder 23. In its natural state, the air vent on the switch plate 38 corresponds to the air vent on the air vent block 37. The air guide tube 1... 5. A dust filter box 11 is fixedly connected to the bottom of the dust filter box 11, which is fixedly mounted on the bracket. An installation frame 28 is slidably installed inside the dust filter box 11. A dust filter screen 24 is fixedly connected to the installation frame 28. A telescopic cylinder 26 is fixedly connected to the installation frame 28. A fixing block 27 is fixedly connected to the inner wall of the dust filter box 11 above the telescopic cylinder 26. An elastic element 7 is sleeved on the telescopic end of the telescopic cylinder 26. A limiting baffle 25 is fixedly connected to the installation frame 28. A first controller 14 is fixedly connected to the side wall of the dust filter box 11 above the limiting baffle 25. The first controller 14 is used to control the rotation of the material changing motor 3 to change materials. A guide plate 32 is fixedly connected inside the dust filter box 11 below the dust filter screen 24. The bottom of the guide plate 32 can be made of a smooth material or coated with a smooth coating to facilitate dust to bypass the guide plate 32 and enter the dust filter 24. The guide plate 32 is inclined (the length of the guide plate 32 is slightly longer than the dust filter 24 to ensure dust collection efficiency). A discharge port 33 is opened on the side wall of the dust box 11 on one side of the guide plate 32. A dust collection box 13 is fixedly connected to the outer wall of the dust box 11 on the side of the discharge port 33. A sealing plate 35 is detachably connected to the bottom of the dust collection box 13. A one-way valve is provided in the dust collection box 13 to ensure that dust enters in one direction. A dust collection frame 10 is fixedly connected to the bottom of the dust box 11. A mounting frame 31 is fixedly connected inside the dust collection frame 10. A mounting frame 31 is fixedly mounted on the mounting frame 31. A drive motor 30 is fixedly connected, and the output shaft of the drive motor 30 extends to the bottom of the mounting bracket 31 and is fixedly connected to the brush plate 12. An electric telescopic rod 20 is fixedly connected to the side wall of the side plate 2. The telescopic end of the electric telescopic rod 20 is fixedly connected to the drive plate 19. A guide plate 18 is fixedly connected to the upper end of the drive plate 19. The guide plate 18 is correspondingly set with the switch plate 38. A detection plate 21 is slidably connected through the lower end of the drive plate 19. One end of the detection plate 21 is slidably connected through the side wall of the dust box 11 and is correspondingly set with the first controller 14 in the horizontal direction. A fixing rod 29 is fixedly connected to one side of the detection plate 21. A telescopic member 22 is fixedly connected between the fixing rod 29 and the drive plate 19. The actual working principle is as follows: the operator places the electrode plate 9, which needs to be powder-brushed, on the support column 8, and then positions the electrode plate 9 under the action of the positioning pin 36. Then, the vacuum fan 17 and drive motor 30 are started. The drive motor 30 drives the brush disc 12 to clean the dust on the electrode plate 9. The dust brushed off by the vacuum fan 17 is sucked into the dust filter box 11. The dust passes through the gap between the guide plate 32 and the dust filter box 11 and is filtered at the bottom of the dust filter screen 24. The electric telescopic rod 20 drives the guide plate 18 and the detection plate 21 to move via the drive plate 19 (if the detection plate 21 is not present). If the screen is blocked, it indicates that there is no dust. The extension range of the electric telescopic rod 20 remains constant, always in a reciprocating extension state (changing materials or closing the air duct 15 does not affect its movement). During the vacuuming process, as dust accumulates at the bottom of the filter screen 24, its permeability decreases. Under the action of the vacuum fan 17, the filter screen 24 moves upward, which in turn causes the mounting frame 28 to move the limit baffle 25 upward. The limit baffle 25 rises and blocks one side of the first controller 14. In this case, the detection plate 21 will be blocked by the limit baffle 25 during its movement, and thus will not come into contact with the first controller 14. This situation indicates that the electric telescopic rod 20 has a constant extension range, always in a reciprocating extension state (changing material or closing the air duct 15 does not affect its movement). The dust on electrode 9 is not completely cleaned and needs to be cleaned further. Then, guide plate 18 will contact switch plate 38, causing switch plate 38 to move. The vent on switch plate 38 will separate from the vent on vent block 37, at which point air guide cylinder 15 will be sealed. The dust filter box 11 will lose suction, and the filtered dust will fall onto guide plate 32 and eventually slide into dust collection box 13 through discharge port 33 for collection. Then, electric telescopic rod 20 will reset, and switch plate 38 will reset under the action of reset component 39. The vent on switch plate 38 will align with the one on vent block 37, and dust collection will continue under the action of vacuum fan 17. The above steps are repeated to achieve repeated processing of the same electrode plate 9. When the dust on the electrode plate 9 is cleaned, dust will no longer accumulate on the dust filter 24, and the dust filter 24 will no longer move upward. At this time, the detection plate 21 will not be blocked by the limit baffle 25 during its movement, and the detection plate 21 will contact the first controller 14. The first controller 14 will control the material changing motor 3 to rotate and change the material. When rotating and changing the material, the second controller 40 of the next station will contact the sensing rod 4 to achieve circumferential positioning. The linear motor 41 will drive the electrode plate 9 to move to achieve diametrical positioning, thereby achieving comprehensive powder brushing treatment. Through the above steps, while ensuring the efficiency of powder brushing of electrode sheet 9, the dust on electrode sheet 9 is thoroughly cleaned. For electrode sheets 9 with different amounts of dust and impurities, this method can flexibly adjust the brushing time according to the amount of dust on electrode sheet 9. Compared with traditional powder brushing equipment, it improves the processing effect and efficiency, and has a better effect.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electrode powder brushing device, characterized in that, include: support; The support frame is equipped with a feeding mechanism; The feeding mechanism is equipped with a powder brushing mechanism; The powder brushing mechanism is equipped with a dust filter box; The dust filter box is connected to the dust collection mechanism via an air guide assembly; The dust filter box is equipped with a dust filter assembly and a guide plate; The dust filter box is equipped with a first controller on one side and a corresponding detection plate on the other side; the detection plate can reciprocate relative to the first controller and is fixedly connected to the trigger guide plate; when the detection plate contacts the first controller, the first controller controls the feeding mechanism to change the material. The dust filter assembly has a first state and a second state. When the dust filter assembly is in the first state, the trigger guide plate separates from the switch assembly of the air guide assembly, and the air guide assembly is opened. When the dust filter assembly is in the second state, the trigger guide plate contacts the switch assembly of the air guide assembly, and the air guide assembly is closed. The dust filtration assembly includes: a dust filter screen and a mounting frame; the mounting frame is provided with a limit baffle and a telescopic cylinder on the side near the first controller. The detection plate and the trigger guide plate are respectively fixed on the drive plate; The switching assembly includes: a vent block and a switch plate; the vent block is disposed inside the air guiding assembly, a positioning cylinder is disposed on the side wall of the air guiding assembly, and the switch plate is slidably disposed inside the positioning cylinder; the switch plate and the vent block are respectively provided with corresponding vents, and the end of the switch plate near the positioning cylinder is connected to a reset component.

2. The electrode powder brushing equipment as described in claim 1, characterized in that, A dust filter screen is installed inside the mounting frame, and the telescopic cylinder is fixedly connected to the side wall of the dust filter box.

3. The electrode powder brushing equipment as described in claim 1, characterized in that, The guide plate is inclined and located below the dust filter assembly. The discharge end of the guide plate is connected to the discharge port, which is located on the side wall of the dust filter box.

4. The electrode powder brushing equipment as described in claim 1, characterized in that, The drive plate is connected to the electric telescopic rod, and the end of the electric telescopic rod away from the drive plate is fixedly connected to the bracket. The trigger guide plate and the switch assembly are respectively set.

5. The electrode powder brushing equipment as described in claim 1, characterized in that, The feeding mechanism includes: a material changing motor; a material carrying tray is provided on the material changing motor, a bearing component is provided on the material carrying tray, the bearing component can slide along the diameter direction of the material carrying tray and is elastically connected to the electrode; a sensing rod is also provided on one side of the material changing motor.

6. The electrode powder brushing equipment as described in claim 5, characterized in that, The load-bearing component includes: a load-bearing column; an elastic element is fitted on the outer side of the load-bearing column; a positioning pin is movably disposed above the load-bearing column; the bottom of the load-bearing column is connected to a movable block; the movable block is connected to a linear motor; and the linear motor is connected to a second controller.

7. The electrode powder brushing equipment as described in claim 5, characterized in that, The loading tray is provided with multiple mounting slots, and movable blocks are provided in the mounting slots.

8. The electrode powder brushing equipment as described in claim 1, characterized in that, The powder brushing mechanism includes: a dust collection frame; a dust collection frame is provided below the dust filter box, a mounting frame is provided inside the dust collection frame, a drive motor is provided on the mounting frame, and the drive motor is connected to the brush plate.

9. The electrode powder brushing equipment as described in claim 1, characterized in that, The air guiding assembly includes: an air transmission pipe and an air guiding cylinder; one end of the air transmission pipe is connected to the dust collection mechanism, and the other end is connected to the air guiding cylinder; the end of the air guiding cylinder away from the air transmission pipe is connected to the air outlet at the top of the dust filter box.

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