Pole piece powder brushing equipment

Abstract

The invention belongs to the field of lithium batteries and cleaning, and relates to pole piece powder brushing equipment which comprises a support, a feeding mechanism, a powder brushing mechanism, a dust filtering box, a dust suction mechanism and an air guide assembly. A dust filtering assembly and a material guide plate are arranged in the dust filtering box; a first controller is arranged on one side of the dust filtering box, and a corresponding detection plate is arranged on the other side of the dust filtering box; the detection plate can reciprocate relative to the first controller and is fixedly connected with the triggering piece, and when the detection plate makes 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, and when the dust filtering assembly is in the first state, the triggering piece is separated from the switch assembly of the air guiding assembly, and the air guiding assembly is opened; when the dust filtering assembly is in the second state, the triggering piece is in contact with the switch assembly of the air guiding assembly, and the air guiding assembly is closed. The dust brushing time and strength can be automatically adjusted according to the dust amount on the surface of the pole piece, and the consistency of the dust brushing effect is ensured.

Description

Technical Field

[0001] The invention belongs to the field of lithium batteries and cleaning, and relates to a pole piece powder brushing device. Background Art

[0002] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention, and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] In the production process of lithium-ion batteries, the quality of the pole pieces (positive and negative pole pieces) directly affects the performance and safety of the battery. During the production process of the pole pieces, dust and impurities will remain on the surface due to processes such as coating, rolling, and slitting. If these dusts are not removed in time, they may cause short circuits in the battery, increase self-discharge, or decrease capacity, seriously affecting the performance and safety of the battery. Therefore, pole piece powdering is an indispensable part of the production process of lithium-ion batteries.

[0004] Traditional electrode powder brushing equipment usually uses a simple brush head or a bristle brush for powder brushing. Although it can remove some dust, there are many problems in practical applications. First, the powder brushing effect of traditional equipment is unstable, and it is unable to automatically adjust the powder brushing time and intensity according to the amount of dust on the surface of the electrode, resulting in incomplete powder brushing of some electrodes, while some electrodes may be over-powdered, affecting the coating quality of the electrode surface. Secondly, the dust removal system of traditional equipment is inefficient, and the dust generated during the powder brushing process can easily spread to the production environment, affecting the cleanliness of the workshop and the health of the operators. In addition, the degree of automation of traditional equipment is low, and manual intervention and monitoring are required, which increases production costs and operational complexity.

[0005] In summary, the industry urgently needs to develop electrode powder brushing equipment with high efficiency, automatic adjustment of powder brushing time and intensity, and high efficiency dust removal function. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a pole piece powder brushing device. The pole piece powder brushing device of the present invention can brush powder efficiently, automatically adjust the powder brushing time and intensity, and has a high-efficiency dust removal function, solving the problems of unstable powder brushing effect, low dust removal efficiency, and low degree of automation of existing equipment.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: The first aspect of the present invention provides a pole piece powder brushing device, comprising: Bracket; A feeding mechanism is provided on the bracket; The feeding mechanism is provided with a powder brushing mechanism; The powder brushing mechanism is provided 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 provided with a dust filter assembly and a material guide plate; A first controller is provided on one side of the dust filter box, and a corresponding detection plate is provided on the other side; the detection plate can reciprocate relative to the first controller and is fixedly connected to the trigger member, and when the detection plate contacts the first controller, the first controller controls the feeding mechanism to change materials; The dust filter assembly has a first state and a second state. When the dust filter assembly is in the first state, the trigger component is separated from the switch component of the air guide assembly, and the air guide assembly is opened; when the dust filter assembly is in the second state, the trigger component is in contact with the switch component of the air guide assembly, and the air guide assembly is closed.

[0008] Furthermore, the dust filter assembly includes: a dust filter net and an installation frame; the dust filter net is arranged in the installation frame, and a limit baffle and a telescopic cylinder are arranged on the side of the installation frame close to 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 arranged at an angle and is located below the dust filter assembly. The discharge end of the guide plate is connected to the discharge port, and the discharge port is arranged on the side wall of the dust filter box.

[0010] Furthermore, the detection plate and the trigger member are respectively fixed on the driving plate, the driving plate is connected to the electric telescopic rod, the electric telescopic rod is fixedly connected to the bracket at one end away from the driving plate, and the trigger member is correspondingly arranged with the switch assembly.

[0011] Furthermore, the switch assembly includes: a ventilation block and a switch plate; the ventilation block is arranged in the air guide assembly, a positioning cylinder is arranged on the side wall of the air guide assembly, a switch plate is slidably arranged in the positioning cylinder, corresponding ventilation ports are respectively arranged on the switch plate and the ventilation block, and one end of the switch plate close to the positioning cylinder is connected to the reset member.

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

[0013] Furthermore, the bearing assembly includes: a bearing column; an elastic member is mounted on the outer side of the bearing column, a positioning pin is movably arranged on the top of 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 member is a spring.

[0015] Furthermore, a plurality of mounting grooves are provided on the loading tray, and movable blocks are provided in the mounting grooves.

[0016] Furthermore, the powder brushing mechanism includes: a dust suction frame; a dust suction frame is arranged below the dust filter box, a mounting frame is arranged inside the dust suction frame, a driving motor is arranged on the mounting frame, and the brush plate is connected to the driving motor.

[0017] Furthermore, the air guide assembly includes: an air transfer tube and an air guide cylinder; one end of the air transfer tube is connected to the dust suction mechanism, and the other end is connected to the air guide cylinder; the end of the air guide cylinder away from the air transfer tube is connected to the air outlet at the top of the dust filter box.

[0018] Beneficial effects of the present invention (1) The present invention can efficiently remove dust and impurities on the surface of the electrode through the cooperation of the brush plate and the dust suction fan. The present invention is equipped with a detection plate and a controller, which can automatically adjust the powder brushing time and intensity according to the amount of dust on the surface of the electrode to ensure the consistency of the powder brushing effect; when there is more dust on the surface of the electrode, the equipment will automatically extend the powder brushing time to ensure that the dust is completely removed; when there is less dust, the equipment will automatically shorten the powder brushing time to avoid excessive powder brushing. The present invention is equipped with an efficient dust suction fan and a dust filter box, which can effectively collect the dust generated during the powder brushing process, prevent the dust from spreading into the production environment, and keep the workshop clean. A dust filter net and a guide plate are provided in the dust filter box. After the dust is filtered by the dust filter net, it slides into the dust collecting box through the guide plate for subsequent processing.

[0019] (2) The present invention is equipped with a material replacement motor and a linear motor, which can automatically replace the pole piece, reduce manual intervention, and improve production efficiency. When the pole piece is powdered, the equipment will automatically remove the pole piece that has been powdered and send the pole piece that has not been powdered into the powdering area to ensure the continuity of the production process and work efficiency.

[0020] (3) The present invention provides an efficient, intelligent, and automatically adjustable electrode powder brushing device through the organic combination of efficient powder brushing, automatic adjustment, intelligent control, and efficient dust removal technologies. 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 practicability, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the exemplary embodiments of the present invention and their description are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1This is a schematic diagram of the structure of the electrode powder brushing equipment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the dust filter box of the electrode powder brushing equipment of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the feeding device of the electrode powder brushing equipment of the present invention; Figure 4 It is a cross-sectional view of the pole piece powder brushing device of the present invention; Among them, 1. bottom plate; 2. side plate; 3. material change motor; 4. induction rod; 5. loading tray; 6. mounting slot; 7. elastic member; 8. bearing column; 9. electrode sheet; 10. dust suction frame; 11. dust filter box; 12. brush plate; 13. dust collection box; 14. first controller; 15. air guide cylinder; 16. air transmission pipe; 17. dust suction fan; 18. guide plate; 19. drive plate; 20. electric telescopic rod; 21. detection plate; 22. telescopic retractable part; 23, positioning cylinder; 24, dust filter; 25, limit baffle; 26, telescopic cylinder; 27, fixed block; 28, mounting frame; 29, fixed rod; 30, drive motor; 31, mounting frame; 32, guide plate; 33, discharge port; 34, movable block; 35, sealing plate; 36, positioning pin; 37, ventilation block; 38, switch plate; 39, reset part; 40, second controller; 41, linear motor; 42, mounting groove. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0025] The present invention will be further described in detail below in conjunction with specific embodiments. It should be noted that the specific embodiments are intended to explain the present invention rather than to limit it.

[0026] like Figure 1-4As shown, taking the pole piece for lithium ion battery production process as an example, the present invention provides a pole piece powder brushing device, including: a bottom plate 1, one side of the bottom plate 1 is fixedly connected to the side plate 2, the bottom plate 1 is fixedly connected to the material changing motor 3, the top of the output shaft of the material changing motor 3 is fixedly connected to the loading plate 5, the loading plate 5 is provided with a mounting groove 6, the inner wall of the mounting groove 6 is fixedly connected to a linear motor 41, the end of the output shaft of the linear motor 41 is fixedly connected to a movable block 34, a bearing column 8 is slidably provided on the movable block 34, an electrode sheet 9 is provided on the bearing column 8, a positioning pin 36 is movably provided on the bearing column 8 above the electrode sheet 9, an elastic member 7 is sleeved on the bearing column 8 below the electrode sheet 9, the bottom of the loading plate 5 on one side of the linear motor 41 is fixedly connected to the second controller 40, the second controller 40 is used to control the linear motor 41 to drive the movable block 34 to move, the bottom plate 1 on one side of the material changing motor 3 is fixedly connected to the sensing rod 4, and the sensing rod 4 corresponds to the position of the second controller 40; One side of the side panel 2 is fixedly connected to the dust suction fan 17, the air inlet end of the dust suction fan 17 is fixedly connected to the air transfer pipe 16, one end of the air transfer pipe 16 is fixedly connected to the air guide cylinder 15, the air guide cylinder 15 is fixedly connected to the ventilation block 37, the outer wall of the air guide cylinder 15 below the ventilation block 37 is fixedly connected to the positioning cylinder 23, a switch plate 38 is slidably penetrated in the positioning cylinder 23, one end of the switch plate 38 is slidably penetrated and connected to the side wall of the air guide cylinder 15, a 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 a natural state, the ventilation holes on the switch plate 38 are correspondingly arranged with the ventilation holes on the ventilation block 37, and the air guide cylinder 1 The bottom of the dust filter box 11 is fixedly connected, and the dust filter box 11 is fixed on the bracket. A mounting frame 28 is slidably arranged in the dust filter box 11, and a dust filter net 24 is fixedly connected to the mounting frame 28. A telescopic cylinder 26 is fixedly connected to the mounting frame 28, and a fixed block 27 is fixedly connected to the inner wall of the dust filter box 11 above the telescopic cylinder 26, wherein an elastic member 7 is sleeved on the telescopic end of the telescopic cylinder 26. A limit baffle 25 is fixedly connected to the mounting frame 28, and a side wall of the dust filter box 11 on one side above the limit baffle 25 is fixedly connected to a first controller 14, and the first controller 14 is used to control the rotation of the material changing motor 3 for material changing. A material guide plate 32 (the The bottom of the guide plate 32 can be made of smooth material or coated with a smooth coating to facilitate dust to bypass the guide plate 32 and enter the dust filter net 24). The guide plate 32 is tilted (the length of the guide plate 32 is slightly longer than the dust filter net 24 to ensure the dust collection efficiency). The side wall of the dust filter box 11 on one side of the guide plate 32 is provided with a discharge port 33, and the outer wall of the dust filter box 11 on the side of the discharge port 33 is fixedly connected to the dust box 13. The bottom of the dust box 13 is detachably connected to the sealing plate 35. A one-way valve is arranged in the dust box 13 to ensure one-way dust entry. The bottom of the dust filter box 11 is fixedly connected to the dust suction frame 10, and the dust suction frame 10 is fixedly connected to the mounting frame 31. The mounting frame 31 is fixedly connected to the dust box 13. The drive motor 30 is fixedly connected, the output shaft of the drive motor 30 extends to the bottom of the mounting frame 31 and the bottom is fixedly connected to the brush plate 12, the side wall of the side plate 2 is fixedly connected to the electric telescopic rod 20, the telescopic end of the electric telescopic rod 20 is fixedly connected to the drive plate 19, the upper end of the drive plate 19 is fixedly connected to the guide plate 18, the guide plate 18 is corresponding to the switch plate 38, the lower end of the drive plate 19 is slidably penetrated to set the detection plate 21, one end of the detection plate 21 is slidably penetrated and connected with the side wall of the dust filter box 11, and is horizontally arranged corresponding to the first controller 14, one side of the detection plate 21 is fixedly connected to the fixing rod 29, and the telescopic member 22 is fixedly connected between the fixing rod 29 and the drive plate 19; The actual working principle is that the operator places the electrode sheet 9 to be brushed with powder on the bearing column 8, and then realizes the positioning of the electrode sheet 9 under the action of the positioning pin 36, and then starts the dust suction fan 17 and the drive motor 30, and the drive motor 30 drives the brush plate 12 to clean the dust on the electrode sheet 9. The dust brushed off by the dust suction fan 17 is sucked into the dust filter box 11, and 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 net 24. The electric telescopic rod 20 drives the guide plate 18 and the detection plate 21 to move through the drive plate 19 (if the detection plate 21 is not The electric telescopic rod 20 is always in a reciprocating telescopic state, and the material replacement or closing of the air guide cylinder 15 does not affect its movement state). During the dust collection operation, the dust filter 24 accumulates at the bottom and its permeability becomes poor. Then, under the action of the dust suction fan 17, the dust filter 24 moves up, and then the mounting frame 28 drives the limit baffle 25 to move up. The limit baffle 25 rises and blocks the 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 will not contact the first controller 14. This situation shows that the electric telescopic rod 20 is always in a reciprocating telescopic state, and will not contact the first controller 14. The dust on the electrode 9 is not cleaned thoroughly and needs to be cleaned further. Then the guide plate 18 will contact the switch plate 38 to drive the switch plate 38 to move, and the vent on the switch plate 38 will be separated from the vent on the vent block 37. At this time, the air guide cylinder 15 will be closed. At this time, the dust filter box 11 loses suction, and the filtered dust will fall on the guide plate 32 and finally slide into the dust collecting box 13 through the discharge port 33 for collection. Then the electric telescopic rod 20 is reset, and the switch plate 38 is reset under the action of the reset member 39. The vent on the switch plate 38 corresponds to that on the vent block 37. At this time, dust collection continues under the action of the dust suction fan 17. , the above steps are repeated to realize repeated processing of the same electrode sheet 9. When the dust on the electrode sheet 9 is cleaned, the dust filter screen 24 will no longer accumulate dust, and the dust filter screen 24 will no longer move up. At this time, the detection plate 21 will not be blocked by the limit baffle 25 during the movement, and then the detection plate 21 will contact the first controller 14, and the first controller 14 will control the material change 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 realize the positioning in the circumferential direction, and the linear motor 41 will drive the electrode sheet 9 to move to realize the positioning in the diameter direction, thereby realizing comprehensive powder brushing processing; Through the above steps, while ensuring the powder brushing processing efficiency of the electrode sheet 9, the dust on the electrode sheet 9 is thoroughly cleaned. For electrode sheets 9 containing different amounts of dust and impurities, this method can flexibly adjust the powder brushing time according to the amount of dust on the electrode sheet 9. Compared with traditional powder brushing equipment, it improves the processing effect and processing efficiency, and has a better use effect.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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 pole piece powder brushing device, characterized in that: include: Bracket; A feeding mechanism is provided on the bracket; The feeding mechanism is provided with a powder brushing mechanism; The powder brushing mechanism is provided 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 provided with a dust filter assembly and a material guide plate; A first controller is provided on one side of the dust filter box, and a corresponding detection plate is provided on the other side; the detection plate can reciprocate relative to the first controller and is fixedly connected to the trigger member, and when the detection plate contacts the first controller, the first controller controls the feeding mechanism to change materials; The dust filter assembly has a first state and a second state. When the dust filter assembly is in the first state, the trigger component is separated from the switch component of the air guide assembly, and the air guide assembly is opened; when the dust filter assembly is in the second state, the trigger component is in contact with the switch component of the air guide assembly, and the air guide assembly is closed.

2. The electrode powder brushing device according to claim 1, characterized in that: The dust filter assembly includes: a dust filter net and a mounting frame; the dust filter net is arranged in the mounting frame, and a limit baffle and a telescopic cylinder are arranged on the side of the mounting frame close to the first controller, and the telescopic cylinder is fixedly connected to the side wall of the dust filter box.

3. The electrode powder brushing device according to claim 1, characterized in that: The guide plate is arranged obliquely and is located below the dust filter assembly. The discharge end of the guide plate is connected to the discharge port, and the discharge port is arranged on the side wall of the dust filter box.

4. The electrode powder brushing device according to claim 1, characterized in that: The detection plate and the trigger are respectively fixed on the driving plate, the driving plate is connected to the electric telescopic rod, one end of the electric telescopic rod away from the driving plate is fixedly connected to the bracket, and the trigger is correspondingly arranged with the switch assembly.

5. The electrode powder brushing device according to claim 1, characterized in that: The switch assembly includes: a ventilation block and a switch plate; the ventilation block is arranged in the air guide assembly, a positioning cylinder is arranged on the side wall of the air guide assembly, a switch plate is arranged to slide through the positioning cylinder, corresponding ventilation ports are arranged on the switch plate and the ventilation block respectively, and one end of the switch plate close to the positioning cylinder is connected to the reset member.

6. The electrode powder brushing device according to claim 1, characterized in that: The feeding mechanism includes: a material changing motor; a material loading tray is arranged on the material changing motor, a bearing assembly is arranged on the material loading tray, the bearing assembly can slide along the diameter direction of the material loading tray and is elastically connected to the pole piece; a sensing rod is also arranged on one side of the material changing motor.

7. The electrode powder brushing device according to claim 6, characterized in that: The bearing assembly includes: a bearing column; an elastic member is sleeved on the outer side of the bearing column, a positioning pin is movably arranged on the upper side of 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.

8. The electrode powder brushing device according to claim 6, characterized in that: A plurality of mounting grooves are arranged on the material loading tray, and movable blocks are arranged in the mounting grooves.

9. The electrode powder brushing device according to claim 1, characterized in that: The powder brushing mechanism comprises: a dust suction frame; a dust suction frame is arranged below the dust filter box, a mounting frame is arranged inside the dust suction frame, a driving motor is arranged on the mounting frame, and the brush plate is connected to the driving motor.

10. The electrode powder brushing device according to claim 1, characterized in that: The air guide assembly comprises: an air transfer pipe and an air guide cylinder; one end of the air transfer pipe is connected to the dust suction mechanism, and the other end is connected to the air guide cylinder; the end of the air guide cylinder away from the air transfer pipe is connected to the air outlet at the top of the dust filter box.

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