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CN-122025515-A - Intelligent tabletting device for sodium ion battery pole piece production

CN122025515ACN 122025515 ACN122025515 ACN 122025515ACN-122025515-A

Abstract

The invention belongs to the technical field of battery manufacturing equipment, and discloses an intelligent tabletting device for producing sodium ion battery pole pieces, which comprises a pair of single-pair compacting rollers, a detection mechanism, a bracket, a pair of secondary compacting rollers, a hydraulic station, a base and a central controller, wherein the detection mechanism is positioned at the discharging side of the primary compacting rollers, the system can identify the local defect of the pole piece in real time and accurately position the defect point, then selectively heats and softens the defect point, and finally, the compaction block capable of being independently controlled carries out accurate local pressure compensation.

Inventors

  • HE TAO
  • LIU XIAOLEI
  • JIANG YONG

Assignees

  • 中宸距弛(甘肃)新能源有限公司

Dates

Publication Date
20260512
Application Date
20260108

Claims (10)

  1. 1. Intelligent tabletting device is used in production of sodium ion battery pole piece, its characterized in that includes: A pair of one-time compacting rollers (2); the detection mechanism (3) is positioned at the discharging side of the primary compaction roller (2) and is used for detecting the pole piece subjected to primary compaction and outputting defect position information; The support (4), support (4) are located the ejection of compact side of detection mechanism (3), be connected with a pair of apron (5) of relative setting on support (4), a pair of apron (5) are located the upper and lower both sides of pole piece transmission path respectively, apron (5) are close to pole piece one end and are connected with a plurality of heating brick (6) that lay in matrix form, be connected with heating pipe (7) on heating brick (6); The device comprises a pair of secondary compaction rollers (8), wherein the pair of secondary compaction rollers (8) are positioned on the discharging side of a cover plate (5), a hydraulic cavity (9) is formed in the roller body of each secondary compaction roller (8), a plurality of groups of mounting grooves (10) are formed in the surface of each secondary compaction roller (8) along the axial direction, compaction blocks (11) are connected in the mounting grooves (10) in a sliding manner, springs (12) are connected between the compaction blocks (11) and the inner walls of the mounting grooves (10), the hydraulic cavity (9) is connected with the bottom of each mounting groove (10) through independent oil ways, and independent electromagnetic valves (13) are connected to each oil way; the hydraulic station is connected with the hydraulic cavity (9) through a pipeline and a rotary joint; The pole piece conveying device comprises a base (1), wherein a primary compacting roller (2), a detection mechanism (3), a bracket (4) and a secondary compacting roller (8) are sequentially connected to the base (1) along a pole piece conveying path in sequence, the primary compacting roller (2) and the secondary compacting roller (8) are connected with the base (1) through bearing seats, and a power mechanism for driving the primary compacting roller (2) and the secondary compacting roller (8) to rotate is connected to the base (1); The detection mechanism (3), each heating pipe (7), each electromagnetic valve (13), the hydraulic station and the driving mechanism are electrically connected with the central controller; The central controller is configured to receive the defect position information, control the opening and closing of the heating pipe (7) corresponding to the defect position according to the defect position information, and control the driving mechanism, the hydraulic station and the corresponding electromagnetic valve (13) to act cooperatively, so that the corresponding compaction block (11) protrudes at a set position to execute local secondary compaction.
  2. 2. The intelligent tabletting device for producing sodium ion battery pole pieces is characterized in that the detection mechanism (3) comprises a visual detection unit for acquiring the surface image of the pole pieces and a physical detection unit for detecting the surface density and thickness of the pole pieces.
  3. 3. The intelligent tabletting device for producing sodium ion battery pole pieces is characterized in that the heating bricks (6) are arranged in a matrix on the cover plate (5), and the arrangement positions of the heating bricks (6) along the width direction of the pole pieces are in one-to-one correspondence with the arrangement positions of the mounting grooves (10) on the secondary compaction roller (8).
  4. 4. An intelligent tabletting device for producing sodium ion battery pole pieces according to claim 1, wherein the pair of secondary compaction rollers (8) are configured such that when the compaction blocks (11) are in an unoccupied state, a gap for only pole pieces to pass through is formed between the pair of secondary compaction rollers (8), and when part of the compaction blocks (11) are controlled to be raised, compaction is applied to the pole pieces only in local areas corresponding to the raised compaction blocks (11).
  5. 5. The intelligent tabletting device for producing sodium ion battery pole pieces, as set forth in claim 1, is characterized in that at least two compaction blocks (11) are arranged in each group of the installation grooves (10) along the circumferential direction of the secondary compaction roller (8).
  6. 6. The intelligent tabletting device for producing sodium ion battery pole pieces is characterized in that the working surface of each compaction block (11) is an outwards convex arc surface, and a plurality of compaction blocks (11) are closely arranged in the circumferential direction and the axial direction of the secondary compaction roller (8), so that when any one or more compaction blocks (11) are raised, the working surface of each compaction block can smoothly transition with the surface of the working surface of the adjacent compaction block (11) to jointly form a local continuous curved surface for extruding the pole pieces.
  7. 7. The intelligent tabletting device for producing sodium ion battery pole pieces, as set forth in claim 1, is characterized in that all side edges of the compacting block (11) are provided with chamfers.
  8. 8. The intelligent tabletting device for producing sodium ion battery pole pieces is characterized in that a device for driving the secondary compaction roller (8) in the power mechanism is a servo motor.
  9. 9. The intelligent tabletting device for producing sodium ion battery pole pieces, as set forth in claim 8, wherein the central controller is further configured to control the servo motor to intermittently rotate the secondary compaction roller (8) according to the defect position information.
  10. 10. The intelligent tabletting device for producing sodium ion battery pole pieces is characterized in that the central controller is further configured to control the heating pipe (7) corresponding to the defect position to conduct time sequence on-off according to the defect position information and the pole piece transmission speed.

Description

Intelligent tabletting device for sodium ion battery pole piece production Technical Field The invention relates to the technical field of battery manufacturing equipment, in particular to an intelligent tabletting device for producing sodium ion battery pole pieces. Background In the production process of sodium ion battery pole pieces, the pole pieces after being coated and dried are subjected to a rolling process to compact the surface active substance coating, reduce the porosity, improve the density and the conductivity and control the overall thickness of the pole pieces, at present, a pair of roller type tablet presses are generally adopted in the process, the pole pieces pass through a gap between a pair of precision rollers, the compaction is completed at one time under huge pressure, and the process mainly depends on preset static technological parameters for operation. However, the existing tabletting technology has significant drawbacks: 1. The method is an open loop process, the quality of the compacted pole pieces cannot be detected and fed back on line in real time, adaptability to factors such as fluctuation of coating incoming materials and equipment state change is lacking, and poor consistency of thickness and density of pole pieces in batches is easily caused; 2. local defects (such as slight bulges, undervoltage and microcracks) in the compaction process cannot be identified and remedied in time, and can only be processed into waste products or degraded products later, so that material waste and yield loss are caused. Therefore, it is needed to develop a tabletting device capable of sensing the compaction state of the pole piece in real time, dynamically adjusting the process and intelligently remedying the local defects so as to improve the consistency, stability and overall yield of the production quality of the pole piece. Disclosure of Invention The invention aims to provide an intelligent tabletting device for producing sodium ion battery pole pieces, which solves the problems in the prior art, and the intelligent closed-loop repairing system is constructed by integrating on-line detection, matrix fixed-point heating and hydraulic driving type local secondary compaction after primary compaction, can identify the local defects of the pole pieces in real time and accurately position the pole pieces, and then selectively heating and softening the defect points, and finally implementing accurate local pressure compensation by independently controllable compaction blocks, thereby fundamentally overcoming the defect that the defects cannot be remedied on line by the traditional single compaction, converting post-scrapping into on-line repair, obviously improving the consistency and yield of pole piece production, simultaneously reducing material waste and realizing high-quality and low-loss intelligent production. In order to achieve the above purpose, the present invention provides the following technical solutions: Intelligent tabletting device is used in production of sodium ion battery pole piece, includes: a pair of one-time compaction rollers; the detection mechanism is positioned at the discharging side of the primary compacting roller and is used for detecting the pole piece subjected to primary compacting and outputting defect position information; The support is positioned at the discharging side of the detection mechanism, a pair of cover plates which are oppositely arranged are connected to the support, the pair of cover plates are respectively positioned at the upper side and the lower side of the pole piece transmission path, one end, close to the pole piece, of the cover plates is connected with a plurality of heating bricks which are distributed in a matrix form, and heating pipes are connected to the heating bricks; The pair of secondary compaction rollers are positioned on the discharging side of the cover plate, a hydraulic cavity is formed in the roller body of each secondary compaction roller, a plurality of groups of mounting grooves are formed in the surface of each secondary compaction roller along the axial direction, compaction blocks are connected in the mounting grooves in a sliding manner, springs are connected between the compaction blocks and the inner walls of the mounting grooves, the hydraulic cavity is connected with the bottom of each mounting groove through independent oil ways, and each oil way is connected with an independent electromagnetic valve; the hydraulic station is connected with the hydraulic cavity through a pipeline and a rotary joint; The device comprises a base, a primary compaction roller, a detection mechanism, a bracket and a secondary compaction roller, wherein the primary compaction roller, the detection mechanism, the bracket and the secondary compaction roller are sequentially connected to the base along a pole piece transmission path, the primary compaction roller and the secondary compaction roller are connected with the base t