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CN-118950526-B - Pole piece processing equipment

CN118950526BCN 118950526 BCN118950526 BCN 118950526BCN-118950526-B

Abstract

The invention relates to the technical field of batteries, and discloses pole piece processing equipment which comprises a powder removing device, a cutting device and a moving platform, wherein the moving platform is used for supporting pole pieces, the moving platform can reciprocate between the powder removing device and the cutting device, the powder removing device is used for removing powder from pole pieces, and the cutting device is used for cutting pole pieces after the powder is removed. The powder removing device comprises a vertical moving component and a powder removing component, wherein the powder removing component comprises a powder removing brush, a first pressing ring and a first elastic piece, the powder removing brush is arranged on the vertical moving component, the first pressing ring is elastically connected with the vertical moving component through the first elastic piece and is sleeved outside the powder removing brush, the vertical moving component is used for driving the powder removing component to move towards the direction close to the pole piece, when the first pressing ring is abutted to the pole piece, the vertical moving component continuously drives the powder removing component to move, the first pressing ring is compressed through resistance, and therefore the first pressing ring is abutted to the pole piece until the powder removing brush is abutted to the pole piece. The pole piece processing equipment can be used for carrying out pretreatment on the pole piece, and the automation degree is high.

Inventors

  • Meng Shanglin
  • ZHANG HUILONG
  • LI HAIJUN
  • ZHANG BAOSHENG

Assignees

  • 中能瑞新(深圳)能源科技有限公司

Dates

Publication Date
20260512
Application Date
20240911

Claims (12)

  1. 1. The pole piece processing equipment is characterized by comprising a powder removing device (1), a cutting device (2) and a moving platform (31), wherein the moving platform (31) can reciprocate between the powder removing device (1) and the cutting device (2), and the moving platform (31) is used for supporting the pole piece (100); The powder removing device (1) comprises a vertical removing assembly (11) and a powder removing assembly (12), wherein the powder removing assembly (12) comprises a powder removing brush (121), a first pressing ring (122) and a first elastic piece (123), the powder removing brush (121) is arranged on the vertical removing assembly (11), the first pressing ring (122) is elastically connected with the vertical removing assembly (11) through the first elastic piece (123) and sleeved outside the powder removing brush (121), the vertical removing assembly (11) is used for driving the powder removing assembly (12) to move towards the direction close to the pole piece (100), and when the first pressing ring (122) abuts against the pole piece (100), the vertical removing assembly (11) continuously drives the powder removing assembly (12) to move, and the first pressing ring (122) is subjected to resistance to enable the first elastic piece (123) to be compressed so that the first pressing ring (122) is kept abutting against the pole piece (100) until the powder removing brush (121) abuts against the pole piece (100); The cutting device (2) is used for cutting out a pole piece (100) after powder, the cutting device (2) comprises a driving assembly (21), an upper cutting assembly (22) and a lower cutting assembly (23), the upper cutting assembly (22) comprises an upper cutting die (221), a second pressing ring (222) and a second elastic piece (223), the upper cutting die (221) is arranged on the driving assembly (21), the second pressing ring (222) is sleeved on the upper cutting die (221) and is elastically connected with the upper cutting die (221) through the second elastic piece (223), and the lower cutting assembly (23) comprises a cutting die (231); The driving assembly (21) is used for driving the upper cutting assembly (22) to move towards the direction close to the pole piece (100), when the second pressing ring (222) is abutted against the pole piece (100), the driving assembly (21) continuously drives the upper cutting assembly (22) to move, the second pressing ring (222) is subjected to resistance to enable the second elastic piece (223) to be compressed, so that the second pressing ring (222) is abutted against the pole piece (100) until the upper cutting die (221) is abutted against the pole piece (100), and under the driving of the driving assembly (21), the upper cutting die (221) is matched with the cutting die (231) to cut the pole piece (100).
  2. 2. The pole piece processing device according to claim 1, wherein the powder removing assembly (12) further comprises a first guide ring (124), the first guide ring (124) is disposed on the vertical moving assembly (11), the first pressing ring (122) is coaxially disposed with the first guide ring (124) and is disposed in the first guide ring (124) in a penetrating manner, and the first guide ring (124) is used for limiting the first pressing ring (122) to move only along the axial direction of the first guide ring (124), and the axial direction of the first guide ring (124) is consistent with the moving direction of the powder removing assembly (12).
  3. 3. The pole piece treatment device according to claim 2, characterized in that the powder removing means (1) further comprises a dust collection assembly (14), the dust collection assembly (14) being arranged on the vertical movement assembly (11) and being connected to the powder removing assembly (12), the dust collection assembly (14) being used for collecting powder formed during powder removal; The dust collection assembly (14) comprises a dust collection pipeline (141), a collection box (142), a vacuum pipeline (143) and a vacuum valve (144), one end of the dust collection pipeline (141) is connected with the first guide ring (124), the other end of the dust collection pipeline is connected with the collection box (142), one end of the vacuum pipeline (143) is connected with the collection box (142), the other end of the vacuum pipeline is connected with a vacuumizing device, and the vacuum valve (144) is arranged on the vacuum pipeline (143).
  4. 4. A pole piece treatment device according to claim 3, characterized in that a first collecting hole (1241) is arranged on the side wall of the first guide ring (124), a second collecting hole (1221) is arranged on the side wall of the first compression ring (122), the second collecting hole (1221) is communicated with the first collecting hole (1241), the dust collection pipeline (141) is communicated with the first collecting hole (1241) and is positioned outside the first guide ring (124), and the dust collection pipeline (141) is used for sucking powder in the first compression ring (122); the bottom side wall of the first pressure ring (122) is also provided with an air hole (1222), and when the first pressure ring (122) is abutted against the pole piece (100) to enclose a closed cavity, the air hole (1222) is used for communicating the closed cavity with the external environment.
  5. 5. The pole piece processing device according to claim 2, wherein the vertical movement assembly (11) comprises a first supporting frame (111), a vertical movement driving member (112) and a mounting frame (113), the vertical movement driving member (112) is arranged on the first supporting frame (111), the mounting frame (113) is connected with an output shaft of the vertical movement driving member (112), the powder removal assembly (12) is arranged on the mounting frame (113), and the vertical movement driving member (112) is used for driving the powder removal assembly (12) to move in a vertical direction; The first guide ring (124) is arranged on the mounting frame (113), two ends of the first elastic piece (123) are respectively abutted against the first compression ring (122) and the mounting frame (113), and the powder removing brush (121) is arranged on the mounting frame (113).
  6. 6. Pole piece handling equipment according to claim 1, characterized in that the de-powdering device (1) further comprises a support (13), the support (13) being arranged below the de-powdering brush (121), the moving platform (31) being located between the de-powdering brush (121) and the support (13), the de-powdering brush (121) being capable of being moved against at least part of the moving platform (31) towards the side of the support (13) under the drive of the vertical movement assembly (11), so that the pole piece (100) abuts against the support (13).
  7. 7. The pole piece processing device according to claim 1, wherein the upper cutting assembly (22) further comprises a second guide ring (224) and an upper die holder (225), one end of the upper die holder (225) is connected with the output shaft of the driving assembly (21), the other end of the upper die holder (225) is connected with the upper cutting die (221), the second guide ring (224) is arranged on the driving assembly (21), and the second guide ring (224) is coaxially arranged with the upper die holder (225) and sleeved outside the upper die holder (225), and the second guide ring (224) is used for limiting the upper die holder (225) to move only in the vertical direction.
  8. 8. The pole piece processing device according to claim 7, wherein the driving assembly (21) comprises a second supporting frame (211) and a cutting driving piece (212), the cutting driving piece (212) is arranged on the second supporting frame (211), the cutting upper die (221) is connected with an output shaft of the cutting driving piece (212), the cutting driving piece (212) is used for driving the cutting upper die (221) to move in the vertical direction, and the second guide ring (224) is arranged on the second supporting frame (211).
  9. 9. The pole piece processing device according to claim 1, wherein the second elastic piece (223) comprises an elastic element (2231) and a guide pin (2232), the elastic element (2231) is sleeved on the guide pin (2232), two ends of the elastic element (2231) are respectively abutted against the second pressing ring (222) and the upper cutting die (221), a first end of the guide pin (2232) is connected with the second pressing ring (222), a second end of the guide pin (2232) is slidably connected with the upper cutting die (221), and the second pressing ring (222) can drive the guide pin (2232) to move relative to the upper cutting die (221) in the vertical direction.
  10. 10. The pole piece processing apparatus according to claim 1, wherein the cutting die (231) is disposed below the cutting upper die (221), the moving platform (31) is located between the cutting upper die (221) and the cutting die (231), and the cutting upper die (221) is capable of pressing at least part of the moving platform (31) toward one side of the cutting die (231) under the driving of the driving assembly (21), so that the pole piece (100) is abutted against the cutting die (231); the cutting die (231) is provided with a first receiving hole (2311), and the first receiving hole (2311) penetrates through the cutting die (231) in the vertical direction.
  11. 11. The pole piece processing device according to claim 6, wherein the moving platform (31) comprises a mounting plate (312), a third elastic piece (313) and a supporting plate (311), a movable groove (3123) is arranged on the mounting plate (312), a limiting hole (3122) is arranged on the bottom wall of the movable groove (3123), the supporting plate (311) is slidably arranged in the movable groove (3123), a limiting pin (3112) is arranged on the supporting plate (311), the limiting pin (3112) is slidably inserted in the limiting hole (3122), the third elastic piece (313) is sleeved on the limiting pin (3112), one end of the third elastic piece (313) is abutted against the supporting plate (311), and the other end is abutted against the wall of the limiting hole (3122), and when the third elastic piece (313) is compressed, the supporting plate (311) can be contacted with the bottom wall of the movable groove (3123); A bearing groove (3111) is formed in the supporting plate (311), the bearing groove (3111) is used for placing the pole piece (100), a first through hole (3113) is formed in the groove wall of the bearing groove (3111) in a penetrating mode, a second through hole (3121) is formed in the groove wall of the movable groove (3123) in a penetrating mode, and the second through hole (3121) is communicated with the first through hole (3113); When the supporting plate (311) moves towards one side of the supporting member (13), the supporting member (13) can pass through the second through hole (3121) and the first through hole (3113) to be in contact with the pole piece (100) in the bearing groove (3111); when the supporting plate (311) moves towards one side of the cutting die (231), the cutting die (231) can pass through the second through hole (3121) and the first through hole (3113) to be in contact with the pole piece (100) in the supporting groove (3111).
  12. 12. The pole piece treatment device according to any one of claims 1-10, further comprising a support platform (32) and a translational drive (33), wherein the powder removing device (1), the cutting device (2) and the translational drive (33) are arranged on the support platform (32), a guide rail (321) is arranged on the support platform (32), the moving platform (31) is arranged on the guide rail (321) in a sliding manner, the moving platform (31) is arranged on the translational drive (33), and the translational drive (33) drives the moving platform (31) to reciprocate between the powder removing device (1) and the cutting device (2); The two ends of the extending direction of the guide rail (321) are respectively provided with a first limiting part (322) and a second limiting part (323), the moving platform (31) can move along the extending direction of the guide rail (321) to be abutted against the first limiting part (322), and the moving platform (31) can move along the extending direction of the guide rail (321) to be abutted against the second limiting part (323).

Description

Pole piece processing equipment Technical Field The invention relates to the technical field of batteries, in particular to pole piece processing equipment. Background Along with the wide application of lithium batteries, batteries produced by different process materials can form energy decay or safety problems of different conditions when used in different environments, and failure analysis and detection are required to be carried out on the batteries for analyzing the reasons of the energy decay or the safety problems, so that the process is improved, the battery performance is improved, the batteries are required to be disassembled before failure analysis and detection are carried out, and the disassembled pole pieces are processed. According to different failure analysis detection items, the pole piece processing modes before detection are also different. For example, when performing reverse capacity analysis detection, the pole piece pretreatment method is to wipe and remove active substances on one side of the pole piece manually by NMP (N-methyl-2-pyrrolidone, N-methylpyrrolidone) and deionized water to completely expose a foil part to obtain a single-sided pole piece, but the treatment efficiency is low, the other side of the pole piece cannot be ensured to be unaffected in the treatment process, and safety risks such as foil breakage or cracks possibly exist, and when performing ICP (Inductively Coupled Plasma, inductively coupled plasma technology) detection, the pole piece pretreatment method is to manually scrape the active substances on the surface of the pole piece to serve as a detection sample, but the manual sampling efficiency is low, the consistency of the sample is low due to manual operation, and the foil of the pole piece is easy to be scraped in the process of scraping the sample to influence the test result. At present, no matter which failure analysis and detection project is used, manual modes are mostly adopted for pole piece processing modes before detection, the automation degree and the processing efficiency of the pole piece processing operation modes are lower, and the accuracy of a test result is not influenced by damage or interference of external factors when a detection sample is processed. Therefore, there is a need for a pole piece handling device to solve the above problems. Disclosure of Invention The invention aims to provide pole piece processing equipment which can carry out different pretreatment on the pole piece so as to meet the requirements of various failure analysis and detection, has high automation degree and high processing efficiency, has small damage to the pole piece and can improve the accuracy of the test result of the battery failure analysis. The technical scheme adopted by the invention is as follows: The pole piece processing equipment comprises a powder removing device, a cutting device and a moving platform, wherein the moving platform can reciprocate between the powder removing device and the cutting device, and the moving platform is used for supporting a pole piece; The powder removing device comprises a vertical moving assembly and a powder removing assembly, wherein the powder removing assembly comprises a powder removing brush, a first pressing ring and a first elastic piece, the powder removing brush is arranged on the vertical moving assembly, the first pressing ring is elastically connected with the vertical moving assembly through the first elastic piece and sleeved on the powder removing brush, the vertical moving assembly is used for driving the powder removing assembly to move towards the direction close to the pole piece, when the first pressing ring is abutted to the pole piece, the vertical moving assembly continuously drives the powder removing assembly to move, the first pressing ring is pressed by the first elastic piece under resistance, so that the first pressing ring is abutted to the pole piece until the powder removing brush is abutted to the pole piece, and the powder removing brush is used for removing powder from the pole piece; the cutting device is used for cutting the pole piece after the powder is cut off. Optionally, the powder removing assembly further comprises a first guide ring, the first guide ring is arranged on the vertical moving assembly, the first compression ring and the first guide ring are coaxially arranged and penetrate through the first guide ring, the first guide ring is used for limiting the first compression ring to only move along the axial direction of the first guide ring, and the axial direction of the first guide ring is consistent with the moving direction of the powder removing assembly. Optionally, the powder removing device further comprises a dust collection assembly, wherein the dust collection assembly is arranged on the vertical movement assembly and connected with the powder removing assembly, and the dust collection assembly is used for collecting powder formed during powder remo