Film removing device

Abstract

The invention relates to a film removing device, and belongs to the technical field of battery manufacturing. The film removing device comprises a main conveying line used for conveying battery monomers sleeved with films; the film cutting mechanism is used for cutting the sleeve film; and the film pulling mechanism is arranged at the downstream of the film cutting mechanism and is used for pulling the sleeve film out of the battery monomer. The film removing device can realize automatic stripping of the sleeve film on the surface of the battery monomer, and the film removing efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and more specifically, to a film removal device. Background Technology

[0002] During the manufacturing process of lithium batteries, after the battery cells are packaged, they are usually covered with an insulating film made of PP or PE material. This film not only insulates and protects the electrodes of the battery cells, but also prevents moisture and dirt, and avoids wear on the casing, thereby improving the reliability and safety of the battery cells during transportation.

[0003] However, after each film coating process, there will inevitably be defective NG products. The mainstream approach is to collect the NG products through a collection box and process them manually, which results in low rework efficiency. Summary of the Invention

[0004] Therefore, this application proposes a film removal device that can automatically peel off the film from the surface of battery cells, thereby improving the film removal efficiency.

[0005] The membrane removal device according to the first aspect of this application includes: a main conveyor line for conveying battery cells with protective films; a film cutting mechanism for cutting the protective films; and a film removal mechanism disposed downstream of the film cutting mechanism for removing the protective films from the battery cells.

[0006] Optionally, the film-cutting mechanism includes: a rotating clamping mechanism for supporting the battery cell and driving the battery cell to rotate around its own axis; and a laser cutting assembly for laser cutting the film of the battery cell.

[0007] Optionally, the laser cutting assembly is configured to: laser circumferentially cut the sleeve film when the rotating clamping mechanism drives the battery cell to rotate around its own axis; and laser longitudinally cut the sleeve film when the rotating clamping mechanism fixes and supports the battery cell.

[0008] Optionally, the laser longitudinal cutting trajectory of the laser cutting component is one of a straight line, a multi-fold line, or a wavy line.

[0009] Optionally, the rotating clamping mechanism includes a pair of rotating clamping assemblies arranged opposite each other. The rotating clamping assembly includes a roller assembly, which includes a rotating drive member and two first rollers. The rotating drive member is used to drive the two first rollers to rotate, so as to support the battery cell and drive the battery cell to rotate around its own axis.

[0010] Optionally, the rotating clamping mechanism includes a pair of rotating clamping assemblies arranged opposite each other. The rotating clamping assembly includes a centering positioning assembly, which includes a centering drive and a centering positioning head. The centering drive is used to drive the centering positioning head to extend to clamp the battery cell.

[0011] Optionally, the film cutting mechanism further includes a lifting mechanism, which drives the rotating clamping mechanism to lift and lower to raise the battery cell to the film cutting height position, and the laser cutting component is used to laser cut the film of the battery cell at the film cutting height position.

[0012] Optionally, the membrane removal mechanism includes: a fixed gripper assembly and a membrane removal gripper assembly disposed opposite to each other. The fixed gripper assembly is used to clamp one end of the battery cell. The membrane removal gripper assembly includes a telescopic drive and a membrane removal gripper. The telescopic drive is used to drive the membrane removal gripper to extend or retract. The membrane removal gripper is used to clamp the other end of the battery cell and remove the membrane.

[0013] Optionally, two film-removing mechanisms are provided, which are arranged at intervals along the conveying direction of the main conveyor line and staggered to remove the film from both ends of the battery cell respectively.

[0014] Optionally, the film removal device further includes a film twisting mechanism, which is disposed downstream of the film cutting mechanism and upstream of the film pulling mechanism. The film twisting mechanism includes a first gripper assembly and a second gripper assembly disposed opposite to each other. The first gripper assembly and the second gripper assembly are configured such that one of them holds one end of the battery cell and the other holds the other end of the battery cell and twists the film.

[0015] Optionally, the film removal device further includes a detection and rejection mechanism, located downstream of the film removal mechanism. The detection and rejection mechanism includes: a detection element for detecting whether the film has detached from the battery cell; and a translation module for rejecting NG (non-compliant) battery cells from the main conveyor line.

[0016] Optionally, the detection and rejection mechanism further includes an NG conveyor line for receiving the uncoated NG battery cells held by the translation module. The translation module includes: a lifting gripper for holding the uncoated NG battery cells; and a translation drive assembly for driving the lifting gripper to switch between the main conveyor line and the NG conveyor line.

[0017] Optionally, the detection element and the lifting gripper are both disposed at the execution end of the translation drive assembly, and the detection element and the lifting gripper are spaced apart along the translation direction of the translation drive assembly; when the detection element detects a battery cell with an NG membrane, the translation drive assembly drives the lifting gripper to move to the upper side of the main conveyor line.

[0018] Optionally, the film removal device further includes a feeding mechanism located upstream of the film cutting mechanism for feeding battery cells to the main conveyor line. The feeding mechanism includes: a flipping mechanism for receiving battery cells and flipping them to a horizontal position; and a pusher mechanism for pushing the horizontally positioned battery cells into the main conveyor line.

[0019] Optionally, the main conveyor line includes a clamping fixture, the clamping fixture includes two spaced-apart base portions, and the feeding mechanism further includes: a magnet bracket, disposed on the upper side of the area of ​​the main conveyor line that is connected to the flipping mechanism; and a magnet, disposed on the magnet bracket, for magnetically attracting battery cells to assist the battery cells in entering the clamping fixture from the flipping mechanism.

[0020] Compared with existing technologies, this solution has the following advantages:

[0021] The film removal device in this application includes a film cutting mechanism and a film pulling mechanism. Defective battery cells pass through the film cutting mechanism and the film pulling mechanism in sequence. The film cutting mechanism cuts open the film, and the film pulling mechanism removes the damaged film from the battery cell, thereby realizing automated peeling of the film from the surface of the battery cell and improving the film removal efficiency.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the film removal device provided in the embodiments of this application;

[0025] Figure 2 This is a schematic diagram of the film cutting mechanism of the film removal device provided in the embodiments of this application;

[0026] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the structure of the film removal mechanism of the film removal device provided in the embodiments of this application;

[0028] Figure 5 This is a schematic diagram of the twisting mechanism of the film removal device provided in the embodiments of this application;

[0029] Figure 6 This is a schematic diagram of the detection and rejection mechanism of the film removal device provided in the embodiments of this application;

[0030] Figure 7 This is a schematic diagram of the feeding mechanism of the film removal device provided in the embodiments of this application;

[0031] Figure 8 This is a schematic diagram of the structure of a battery cell with a protective film corresponding to the film removal device provided in the embodiments of this application.

[0032] Icons: 100-Film removal device; 110-Main conveyor line; 111-Clamping fixture; 1111-Base support; 120-Film cutting mechanism; 121-Rotating clamping mechanism; 122-Laser cutting assembly; 1221-Laser emitting unit; 1222-Negative pressure dust removal pipe; 123-Rotating clamping assembly; 1231-Roller assembly; 1232-Rotating drive component; 1233-First roller; 124-Centering and positioning assembly; 1241- Centering drive component; 1242-Centering positioning head; 125-Lifting mechanism; 1251-Lifting drive component; 1252-Lifting plate; 130-Film pulling mechanism; 131-Fixed gripper assembly; 1311-Fixed gripper; 132-Film pulling gripper assembly; 1321-Telescopic drive component; 1322-Film pulling gripper; 133-First film pulling mechanism; 134-Second film pulling mechanism; 135-Waste box; 136-Static eliminator; 137 - Material detection sensor; 138- Film pulling gripper bracket; 140- Film twisting mechanism; 141- First gripper assembly; 1411- Rotary finger cylinder; 1412- Film twisting gripper; 142- Second gripper assembly; 150- Detection and rejection mechanism; 151- Detection element; 152- Translation module; 1521- Lifting gripper; 1522- Translation drive assembly; 1523- Translation plate; 1524- Lifting cylinder; 1525- Rejection Gripper; 153-NG conveyor line; 160-feeding mechanism; 161-tilting mechanism; 1611-tilting drive assembly; 1612-tilting table; 1613-tilting clamping part; 162-push rod mechanism; 1621-push rod drive assembly; 1622-push rod; 163-magnet bracket; 164-magnet; 170-scanning mechanism; 200-cell battery; 210-coating; 211-circumferential cutting trajectory; 212-longitudinal cutting trajectory. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] like Figure 1 As shown, the membrane removal device 100 of some embodiments of this application includes a main conveyor line 110, a membrane cutting mechanism 120, and a membrane removal mechanism 130. The main conveyor line 110 is used to convey battery cells 200 with a protective film 210, the membrane cutting mechanism 120 is used to cut the protective film 210, and the membrane removal mechanism 130 is disposed downstream of the membrane cutting mechanism 120 for removing the protective film 210 from the battery cell 200.

[0036] The main conveyor line 110 conveys battery cells 200 along the first direction X. The film cutting mechanism 120 and the film pulling mechanism 130 are arranged at intervals along the first direction X. During the process of conveying battery cells 200 by the main conveyor line 110, the battery cells 200 pass through the film cutting mechanism 120 and the film pulling mechanism 130 in sequence.

[0037] The film removal device 100 of this application embodiment includes a film cutting mechanism 120 and a film pulling mechanism 130. The battery cell 200 with unqualified film coating passes through the film cutting mechanism 120 and the film pulling mechanism 130 in sequence. The film cutting mechanism 120 cuts open the film coating 210, and the film pulling mechanism 130 removes the damaged film coating 210 from the battery cell 200, thereby peeling off the film coating from the surface of the battery cell 200 and improving the film removal efficiency.

[0038] The specific structure of the membrane removal device 100 is described in detail below.

[0039] like Figure 1 As shown, the battery cell 200 is a cylindrical battery and is horizontal, meaning that the central axis of the battery cell 200 extends along the second direction Y. The first direction X and the second direction Y are two mutually perpendicular horizontal directions.

[0040] like Figure 2 and Figure 3As shown, in some embodiments of this application, the film cutting mechanism 120 includes a rotating clamping mechanism 121 and a laser cutting assembly 122. The rotating clamping mechanism 121 is used to clamp the battery cell 200 and drive the battery cell 200 to rotate around its own axis. The laser cutting assembly 122 is used to laser cut the film 210 of the battery cell 200.

[0041] With this configuration, the battery cell 200 can be rotated, and the laser emitted by the laser cutting component 122 forms a cutting trajectory on the sleeve 210 of the battery cell 200, dividing the sleeve 210 into multiple parts, making it easy to remove the sleeve 210 from the battery cell 200.

[0042] In other embodiments, the battery cell 200 may be fixedly clamped while the laser emitting part 1221 moves to form a cutting trajectory on the sheath 210.

[0043] In some embodiments of this application, the laser cutting assembly 122 is configured to: laser circumferentially cut the sleeve film 210 when the rotating clamping mechanism 121 drives the battery cell 200 to rotate around its own axis; and laser longitudinally cut the sleeve film 210 when the rotating clamping mechanism 121 fixes and supports the battery cell 200.

[0044] like Figure 3 and Figure 8 As shown, the laser cutting assembly 122 includes a laser emitting part 1221 and a negative pressure dust removal tube 1222. The laser emitting part 1221 is used to emit laser light, and the negative pressure dust removal tube 1222 is used to draw air outward to suck out the dust generated during the cutting process of the film 210.

[0045] The laser cutting assembly 122 cuts the sleeve 210 along the circumferential direction of the battery cell 200 to form a circumferential cutting trajectory 211; and cuts the sleeve 210 along the axial direction of the battery cell 200 to form a longitudinal cutting trajectory 212.

[0046] With this configuration, a circumferential cutting trajectory 211 and a longitudinal cutting trajectory 212 can be formed on the sleeve 210, cutting the sleeve 210 along the second direction Y to form two parts, and each part is broken in the circumferential direction, which makes it easy to detach from the battery cell 200 later.

[0047] In other embodiments, the sheath 210 may also be cut along other trajectories.

[0048] In some embodiments of this application, the laser longitudinal cutting trajectory of the laser cutting component 122 is one of a straight line, a multi-fold line, or a wavy line.

[0049] like Figure 8 As shown, as an example, the circumferential trajectory 211 is a circle, and the longitudinal trajectory 212 is a multi-broken line extending along the second direction Y.

[0050] The aforementioned longitudinal cutting trajectory 212 simplifies the laser emission shape or laser movement trajectory of the laser cutting assembly 122, which can shorten the cycle time of longitudinal cutting by the laser cutting assembly 122 and improve the film cutting efficiency.

[0051] Preferably, the longitudinal tracing 212 is a multi-bent line or a wavy line, and the longitudinal tracing 212 has obvious bends, which facilitates the detection of whether the film 210 has been removed by visual inspection in subsequent processes.

[0052] like Figure 3 As shown, in some embodiments of this application, the rotating clamping mechanism 121 includes a pair of rotating clamping assemblies 123 disposed opposite to each other. The rotating clamping assembly 123 includes a roller assembly 1231, which includes a rotating drive member 1232 and two first rollers 1233. The rotating drive member 1232 is used to drive the two first rollers 1233 to rotate, so as to support the battery cell 200 and drive the battery cell 200 to rotate about its own axis.

[0053] A pair of rotating clamping assemblies 123 are arranged opposite each other on both sides of the main conveyor line 110 along the second direction Y. Each rotating clamping assembly 123 includes a roller assembly 1231 and a centering and positioning assembly 124. The two roller assemblies 1231 are used to support the battery cell 200 from both ends and drive the battery cell 200 to rotate.

[0054] Two first rollers 1233 are arranged side by side along a first direction X, and the central axis of each first roller 1233 extends along a second direction Y. The rotation drive 1232 is a servo motor, which drives the two first rollers 1233 to rotate synchronously via a belt assembly. The two first rollers 1233 on the same side are used to jointly support one end of the battery cell 200 along the second direction Y from below and can drive the battery cell 200 to rotate. The four first rollers 1233 together support the battery cell 200 from both sides and drive the battery cell 200 to rotate.

[0055] With this configuration, the battery cell 200 can be supported by two roller assemblies 1231 and rotated, so that the battery cell 200 can be laser longitudinally cut in a fixed support state and laser circumferentially cut during rotation.

[0056] In some embodiments of this application, the rotating clamping mechanism 121 includes a pair of rotating clamping components 123 disposed opposite to each other. The rotating clamping component 123 includes a centering positioning component 124. The centering positioning component 124 includes a centering drive member 1241 and a centering positioning head 1242. The centering drive member 1241 is used to drive the centering positioning head 1242 to extend so as to clamp the battery cell 200.

[0057] The centering drive 1241 is a linear cylinder, and the centering positioning head 1242 is disposed at the actuating end of the centering drive 1241. The centering drive 1241 is used to drive the centering positioning head 1242 to extend along the second direction Y to clamp the battery cell 200, and to retract to release the battery cell 200. It can be understood that the centering positioning head 1242 can clamp the battery cell 200 while allowing the battery cell 200 to rotate around its own axis under the drive of the roller assembly 1231.

[0058] With this configuration, the battery cell 200 can be clamped from both ends along the axial direction of the battery cell 200 while the two roller assemblies 1231 are fixedly supporting the battery cell 200 or driving the battery cell 200 to rotate, thereby improving the positional accuracy of the battery cell 200 and improving the accuracy of laser circumferential cutting and longitudinal cutting.

[0059] like Figure 3 As shown, in some embodiments of this application, the film cutting mechanism 120 further includes a lifting mechanism 125, which is used to drive the rotating clamping mechanism 121 to lift and lower, so as to raise the battery cell 200 to the film cutting height position, and the laser cutting component 122 is used to laser cut the sleeve 210 of the battery cell 200 at the film cutting height position.

[0060] The lifting mechanism 125 includes a lifting drive 1251 and a lifting plate 1252. The lifting drive 1251 is a motor that drives the lifting plate 1252 to rise and fall in the vertical direction Z through a nut screw mechanism. A pair of rotating clamping assemblies 123 are installed on the lifting plate 1252. Under the drive of the lifting plate 1252, a pair of roller assemblies 1231 and a pair of centering and positioning assemblies 124 rise and fall synchronously.

[0061] This configuration allows the battery cells 200 on the main conveyor line 110 to be raised to the cutting height, reducing the impact of laser cutting on other battery cells 200 and providing more installation space for arranging the laser cutting assembly 122.

[0062] In other embodiments, the lifting mechanism 125 may only drive the roller assembly 1231 to rise and fall, while the centering and positioning assembly 124 is positioned at the film cutting height.

[0063] like Figure 4 As shown, in some embodiments of this application, the film removal mechanism 130 includes a fixed gripper assembly 131 and a film removal gripper assembly 132 disposed opposite to each other. The fixed gripper assembly 131 is used to hold one end of the battery cell 200. The film removal gripper assembly 132 includes a telescopic drive member 1321 and a film removal gripper 1322. The telescopic drive member 1321 is used to drive the film removal gripper 1322 to extend or retract. The film removal gripper 1322 is used to hold the other end of the battery cell 200 and remove the film 210.

[0064] The fixed gripper assembly 131 and the film-pulling gripper assembly 132 are arranged opposite to each other on both sides of the main conveyor line 110 along the second direction Y. The fixed gripper assembly 131 includes a fixed gripper 1311, which is fixedly mounted on the film-pulling gripper bracket 138. The telescopic drive 1321 is also mounted on the film-pulling gripper bracket 138, and the film-pulling gripper 1322 is mounted on the actuating end of the telescopic drive 1321. The fixed gripper 1311 and the film-pulling gripper 1322 are arranged opposite to each other along the second direction Y. The telescopic drive 1321 is a linear cylinder used to drive the film-pulling gripper 1322 to extend or retract along the second direction Y.

[0065] Both the fixing jaw 1311 and the film-removing jaw 1322 include a finger cylinder and a pair of jaws. The finger cylinder can adjust the clamping force of the pair of jaws so that the clamping force of the fixing jaw 1311 can clamp one end of the battery cell 200, while the clamping force of the film-removing jaw 1322 is smaller. When the film-removing jaw 1322 retracts along the second direction Y, it can remove the film 210 from the battery cell 200.

[0066] With this configuration, the protective film 210 can be removed from the battery cell 200, thereby separating the protective film 210 from the battery cell 200.

[0067] like Figure 4 As shown, in some embodiments of this application, two film removal mechanisms 130 are provided. The two film removal mechanisms 130 are arranged at intervals along the conveying direction of the main conveying line 110. The two film removal mechanisms 130 are staggered to remove the film 210 from both ends of the battery cell 200 respectively.

[0068] Specifically, two membrane removal mechanisms 130 are arranged at intervals along the first direction X, and the battery cell 200 passes through the two membrane removal mechanisms 130 in sequence.

[0069] The staggered arrangement of the two film removal mechanisms 130 means that the two film removal mechanisms 130 are arranged in opposite directions in the second direction Y. For example, the film removal device 100 includes a first film removal mechanism 133 and a second film removal mechanism 134 arranged sequentially along the first direction X. The fixing gripper assembly 131 of the first film removal mechanism 133 and the film removal gripper assembly 132 of the second film removal mechanism 134 are disposed on one side of the main conveyor line 110 in the second direction Y, and the film removal gripper assembly 132 of the first film removal mechanism 133 and the fixing gripper assembly 131 of the second film removal mechanism 134 are disposed on the other side of the main conveyor line 110 in the second direction Y.

[0070] The film cutting mechanism 120 forms a longitudinal cutting trajectory 212 during longitudinal cutting, cutting the film 210 into two films along the second direction Y. The first film pulling mechanism 133 pulls out one of the films, and the second film pulling mechanism 134 pulls out the other film.

[0071] With this configuration, the film 210 can be reliably removed from the battery cell 200 by pulling the film from both ends of the battery cell 200 in two separate actions.

[0072] In other embodiments, the membrane removal mechanism 130 may also include two oppositely arranged membrane removal gripper assemblies 132, which take turns removing the membrane 210 from both ends of the battery cell 200.

[0073] like Figure 4 As shown, in some embodiments of this application, the film removal mechanism 130 further includes a waste box 135, an electrostatic eliminator 136, and a material detection sensor 137.

[0074] The waste box 135 is located below the film pulling gripper assembly 132. After the film pulling gripper 1322 pulls out the film 210, it releases and the film 210 falls into the waste box 135 below. The two film pulling mechanisms 130 can share one waste box 135. The static eliminator 136 is located above the film pulling gripper assembly 132 to eliminate static electricity on the film 210, prevent the film from adhering to the film pulling gripper 1322, and ensure that the film 210 can fall into the waste box 135 below when the film pulling gripper 1322 is released. The material detection sensor 137 is used to detect whether the battery cell 200 has reached the film pulling mechanism 130. The fixed gripper assembly 131 and the film pulling gripper assembly 132 respond and perform the film pulling action.

[0075] like Figure 1 and Figure 5 As shown, in some embodiments of this application, the film removal device 100 further includes a film twisting mechanism 140, which is disposed downstream of the film cutting mechanism 120 and upstream of the film pulling mechanism 130. The film twisting mechanism 140 includes a first gripper assembly 141 and a second gripper assembly 142 disposed opposite to each other. The first gripper assembly 141 and the second gripper assembly 142 are configured such that one of them holds one end of the battery cell 200, and the other holds the other end of the battery cell 200 and twists the film 210.

[0076] The first gripper assembly 141 and the second gripper assembly 142 are disposed opposite each other on both sides of the main conveyor line 110 along the second direction Y. When the first gripper assembly 141 grips the first end of the battery cell 200, the second gripper assembly 142 grips the second end of the battery cell 200 and twists the sleeve 210; when the second gripper assembly 142 grips the second end of the battery cell 200, the second gripper assembly 142 grips the other end of the battery cell 200 and twists the first end of the sleeve 210, thereby twisting the two parts of the sleeve 210 in sequence.

[0077] The first gripper assembly 141 and the second gripper assembly 142 have the same structure. Taking the first gripper assembly 141 as an example, the first gripper assembly 141 includes a rotary finger cylinder 1411 and a pair of twisting membrane grippers 1412. The rotary finger cylinder 1411 is used to drive the pair of twisting membrane grippers 1412 to rotate and open and close. The pair of twisting membrane grippers 1412 are used to clamp the battery cell 200 and the twisting membrane 210. The rotary finger cylinder 1411 can adjust the clamping force to twist the membrane 210 without applying torque to the battery cell 200 at the same end.

[0078] With this configuration, the sleeve 210 can be twisted circumferentially along the battery cell 200 after the sleeve 210 is cut, which makes it easier for the subsequent film removal mechanism 130 to remove the sleeve 210 from the battery cell 200, thus improving the pass rate of the film removal process.

[0079] like Figure 1 and Figure 6 As shown, in some embodiments of this application, the film removal device 100 further includes a detection and rejection mechanism 150, which is disposed downstream of the film removal mechanism 130. The detection and rejection mechanism 150 includes a detection element 151 and a translation module 152. The detection element 151 is used to detect whether the film 210 is detached from the battery cell 200, and the translation module 152 is used to reject the battery cell 200 that has been removed from the main conveyor line 110.

[0080] The detection element 151 is a CCD camera, positioned downstream of the film removal mechanism 130 along the first direction X. Battery cells 200 on the main conveyor line 110 pass sequentially through the detection element 151. The detection element 151 takes a picture to identify whether the film 210 has been properly removed. If the film 210 is not detached from the battery cell 200, the battery cell 200 is determined to be a defective product (NG) for film removal. The translation drive assembly 1522 then responds by removing the defective product from the main conveyor line 110.

[0081] This setup allows for the timely removal of defective products after membrane removal, ensuring that qualified battery cells 200 proceed to the next process.

[0082] like Figure 6 As shown, in some embodiments of this application, the detection rejection mechanism 150 further includes an NG conveyor line 153 for receiving the uncoated NG battery cells 200 held by the translation module 152. The translation module 152 includes a lifting gripper 1521 and a translation drive assembly 1522. The lifting gripper 1521 is used to hold the uncoated NG battery cells 200, and the translation drive assembly 1522 is used to drive the lifting gripper 1521 to switch between the main conveyor line 110 and the NG conveyor line 153.

[0083] The main conveyor line 110 and the NG conveyor line 153 are arranged side by side along the second direction Y. The execution end of the translation drive component 1522 is provided with a translation plate 1523. The lifting gripper 1521 is provided on the translation plate 1523. The translation drive component 1522 drives the translation plate 1523 to move along the second direction Y, thereby driving the lifting gripper 1521 to switch between the main conveyor line 110 and the NG conveyor line 153, and unloading the uncoated NG product to the NG conveyor line 153.

[0084] The lifting gripper 1521 includes a lifting cylinder 1524 and a rejection gripper 1525. The lifting cylinder 1524 is disposed on the translation plate 1523, and the rejection gripper 1525 is disposed on the execution end of the lifting cylinder 1524. The lifting cylinder 1524 is used to drive the rejection gripper 1525 to lift and lower, and the rejection gripper 1525 is used to grab the uncoated NG products from the main conveyor line 110.

[0085] With this configuration, NG products can be received via NG conveyor line 153 and processed in batches.

[0086] In other embodiments, NG products can also be collected in other ways.

[0087] like Figure 6 As shown, in some embodiments of this application, the detection element 151 and the lifting gripper 1521 are both disposed at the execution end of the translation drive assembly 1522, and the detection element 151 and the lifting gripper 1521 are spaced apart along the translation direction of the translation drive assembly 1522; when the detection element 151 detects the battery cell 200 with the membrane removed NG, the translation drive assembly 1522 drives the lifting gripper 1521 to move to the upper side of the main conveyor line 110.

[0088] The detection element 151 and the lifting gripper 1521 are spaced apart along the second direction Y on the translation plate 1523. The detection element 151 is located on the upper side of the main conveyor line 110 to detect each battery cell 200 that passes through in sequence. When it is necessary to remove the unused product, the translation drive assembly 1522 drives the translation plate 1523 to move along the second direction Y, and switches the lifting gripper 1521 to the upper side of the main conveyor line 110. The lifting gripper 1521 descends to grab the unused product and then lifts it up. The translation drive assembly 1522 drives the translation plate 1523 to continue to move along the second direction Y, and translates the lifting gripper 1521 to the upper side of the NG conveyor line 153. The lifting gripper 1521 descends and places the unused product onto the NG conveyor line 153.

[0089] This configuration allows the detection element 151 and the lifting gripper 1521 to share the same workstation on the main conveyor line 110, reducing the space occupied by the detection and rejection mechanism 150.

[0090] In other embodiments, the detection element 151 and the lifting gripper 1521 may also be arranged at intervals along the conveying direction of the main conveyor line 110, with the detection element 151 fixedly arranged upstream of the lifting gripper 1521.

[0091] like Figure 1 and Figure 7 As shown, in some embodiments of this application, the film removal device 100 further includes a feeding mechanism 160, which is located upstream of the film cutting mechanism 120, for feeding the battery cell 200 to the main conveyor line 110. The feeding mechanism 160 includes a flipping mechanism 161 and a pusher mechanism 162. The flipping mechanism 161 is used to receive the battery cell 200 and flip the battery cell 200 to a horizontal state, and the pusher mechanism 162 is used to push the horizontally positioned battery cell 200 into the main conveyor line 110.

[0092] The flipping mechanism 161 includes a flipping drive assembly 1611 and a flipping table 1612. The flipping drive assembly 1611 includes a rotary motor and a transmission assembly for driving the flipping table 1612 to rotate around a first axis P. The flipping table 1612 is provided with four flipping clamping parts 1613 spaced apart along the first axis P. Each flipping clamping part 1613 is used to clamp one battery cell 200. The first axis P is parallel to the first direction X. When the flipping table 1612 is in a vertical state, it is used to receive battery cells 200 with film NG. After the flipping table 1612 is switched to a horizontal state, the axis of the battery cell 200 extends along the second direction Y, and the push rod mechanism 162 pushes the battery cell 200 into the main conveyor line 110 along the second direction Y.

[0093] The push rod mechanism 162 includes a push rod drive assembly 1621 and four push rods 1622. The four push rods 1622 are spaced apart along the first axis P. Each push rod 1622 corresponds to a flip clamping part 1613. The push rod drive assembly 1621 drives the four push rods 1622 to extend synchronously along the second direction Y, so as to push the four battery cells 200 into the main conveyor line 110 synchronously.

[0094] With this configuration, battery cells 200 can be received in batches and flipped, and the placement posture of battery cells 200 can be adjusted in batches, so that the battery cells 200 are sent into the main conveyor line 110 in a lying position.

[0095] like Figure 7As shown, in some embodiments of this application, the main conveyor line 110 includes a clamping fixture 111, which includes two spaced-apart base portions 1111. The feeding mechanism 160 also includes a magnet bracket 163 and a magnet 164. The magnet bracket 163 is disposed on the upper side of the area of ​​the main conveyor line 110 that is connected to the flipping mechanism 161. The magnet 164 is disposed on the magnet bracket 163 and is used to magnetically attract the battery cell 200 to assist the battery cell 200 in entering the clamping fixture 111 from the flipping mechanism 161.

[0096] The main conveyor line 110 includes multiple clamping fixtures 111 spaced apart along a first direction X, each clamping fixture 111 being used to clamp one battery cell 200; two base supports 1111 spaced apart along a second direction Y, and used to jointly support one battery cell 200, with a gap between the two base supports 1111. During the process of the push rod mechanism 162 pushing the battery cell 200 into the clamping fixture 111, the end of the battery cell 200 passes sequentially through the two base supports 1111, causing its outer peripheral surface to abut against the two base supports 1111.

[0097] Specifically, there are four magnets 164, which are spaced apart along the first direction X on the magnet bracket 163, and each magnet 164 corresponds to a flipping clamping part 1613.

[0098] With this configuration, the battery cell 200 can be magnetically attracted by the magnet 164, which reduces the possibility of the battery cell 200 falling into the gap and reliably guides the battery cell 200 to move along the second direction Y onto the clamping fixture 111.

[0099] like Figure 1 As shown, in some embodiments of this application, the film removal device 100 further includes a barcode scanning mechanism 170, which is located upstream of the film cutting mechanism 120, for reading the information code of the battery cell 200.

[0100] The barcode scanning mechanism 170 is located downstream of the feeding mechanism 160 and upstream of the film cutting mechanism 120. It includes a barcode scanning component and a rotating clamping mechanism. The rotating clamping mechanism has the same structure as the rotating clamping mechanism 121 in the film cutting mechanism 120. It is used to clamp the battery cell 200 and drive the battery cell 200 to rotate around its own axis. The barcode scanning component reads the information code of the battery cell 200 or the film 210.

[0101] This setup enables traceability of information in subsequent processes, allowing for comprehensive monitoring of the processing flow of each 200 battery cells.

[0102] like Figures 1 to 8 As shown, the working principle of the film removal device 100 in this embodiment is as follows:

[0103] The flipping mechanism 161 of the feeding mechanism 160 receives the battery cell 200 with the sleeve film 210 in a vertical state and flips it to a horizontal state. The push rod mechanism 162 pushes the battery cell 200 into the main conveyor line 110. The main conveyor line 110 conveys the battery cell 200 along the first direction X. The barcode scanning mechanism 170 reads the information code of the battery cell 200.

[0104] Under the conveying of the main conveyor line 110, the battery cell 200 reaches the film cutting mechanism 120. The lifting mechanism 125 drives the rotating clamping mechanism 121 to rise. The rotating clamping assembly 123 supports the battery cell 200 from the bottom and lifts the battery cell 200 to the film cutting height position. The centering positioning assembly 124 extends and clamps the battery cell 200. The roller assembly 1231 drives the battery cell 200 to rotate around its own axis. The laser cutting assembly 122 performs a circumferential cut on the film 210.

[0105] The roller assembly 1231 stops rotating, and the laser cutting assembly 122 performs longitudinal cutting on the film 210;

[0106] The centering and positioning component 124 retracts, the lifting mechanism 125 descends, and the battery cell 200 returns to the main conveyor line 110.

[0107] Under the conveying of the main conveyor line 110, the battery cell 200 reaches the twisting film mechanism 140. The first gripper assembly 141 clamps the first end of the battery cell 200, and the second gripper assembly 142 clamps the second end of the battery cell 200 and twists the film 210.

[0108] The second gripper assembly 142 is released and reset, and then clamps the second end of the battery cell 200 again. The first gripper assembly 141 is released and reset, and then clamps the first end of the battery cell 200 again and twists the sleeve 210.

[0109] Both the first gripper assembly 141 and the second gripper assembly 142 are released and reset, and the main conveyor line 110 continues to convey the battery cell 200.

[0110] Under the conveying of the main conveyor line 110, the battery cell 200 reaches the first film removal mechanism 133. The fixed gripper 1311 of the first film removal mechanism 133 clamps the first end of the battery cell 200, and the film removal gripper 1322 clamps the second end of the battery cell 200 and retracts, removing a part of the film 210 from the battery cell 200.

[0111] Under the conveying of the main conveyor line 110, the battery cell 200 reaches the second film removal mechanism 134. The fixing claw 1311 of the second film removal mechanism 134 clamps the second end of the battery cell 200, and the film removal claw 1322 clamps the first end of the battery cell 200 and retracts, removing the other part of the film 210 from the battery cell 200, and completely removing the film 210 from the battery cell 200.

[0112] Under the conveying of the main conveyor line 110, the battery cell 200 reaches the detection and rejection mechanism 150. The detection element 151 takes a picture to detect whether the film 210 has been removed from the battery cell 200. If the film 210 has been completely removed, the battery cell 200 continues to be conveyed. If the film 210 has not been completely removed, the translation drive assembly 1522 drives the lifting gripper 1521 to move to the upper side of the main conveyor line 110, lowers and clamps the battery cell 200 with the film removed (NG) and then lifts it up. The translation drive assembly 1522 drives the lifting gripper 1521 to move to the upper side of the NG conveyor line 153. The lifting gripper 1521 lowers and places the battery cell 200 with the film removed (NG) onto the NG conveyor line 153.

[0113] The detection element 151 is reset and continues to detect the next battery cell 200.

[0114] The film removal device 100 of this application embodiment includes a feeding mechanism 160, a barcode scanning mechanism 170, a film cutting mechanism 120, a film twisting mechanism 140, a film pulling mechanism 130, and a detection and rejection mechanism 150 arranged sequentially along the conveying direction of the main conveyor line 110. It can fully automate the processes of flipping feeding, barcode reading, film cutting, film twisting, film pulling, and rejection. It can not only realize automatic film removal operation, but also improve the film removal qualification rate and improve the film removal efficiency of battery cells 200 through the film cutting, twisting, and pulling processes.

[0115] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0116] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A membrane removal device (100), characterized in that, include: The main conveyor line (110) is used to convey battery cells (200) with sheaths (210); A film cutting mechanism (120) is used to cut the film sleeve (210); A film removal mechanism (130) is disposed downstream of the film cutting mechanism (120) for removing the film (210) from the battery cell (200).

2. The membrane removal device (100) according to claim 1, characterized in that, The film cutting mechanism (120) includes: The rotating clamping mechanism (121) is used to support the battery cell (200) and drive the battery cell (200) to rotate around its own axis; Laser cutting assembly (122) for laser cutting the casing (210) of a single cell (200).

3. The membrane removal device (100) according to claim 2, characterized in that, The laser cutting assembly (122) is configured as follows: When the rotating clamping mechanism (121) drives the battery cell (200) to rotate around its own axis, the laser-cut sleeve (210) is used; and Laser longitudinal cutting of the sleeve (210) is performed while the rotating clamping mechanism (121) is used to fix and support the battery cell (200).

4. The membrane removal device (100) according to claim 3, characterized in that, The laser longitudinal cutting trajectory of the laser cutting component (122) is one of a straight line, a multi-fold line, or a wavy line.

5. The membrane removal device (100) according to claim 2, characterized in that, The rotating clamping mechanism (121) includes a pair of rotating clamping assemblies (123) disposed opposite each other, the rotating clamping assembly (123) including: The roller assembly (1231) includes a rotation drive (1232) and two first rollers (1233). The rotation drive (1232) is used to drive the two first rollers (1233) to rotate in order to support the battery cell (200) and drive the battery cell (200) to rotate about its own axis.

6. The membrane removal device (100) according to claim 2, characterized in that, The rotating clamping mechanism (121) includes a pair of rotating clamping assemblies (123) disposed opposite each other, the rotating clamping assembly (123) including: The centering and positioning assembly (124) includes a centering drive (1241) and a centering and positioning head (1242), wherein the centering drive (1241) is used to drive the centering and positioning head (1242) to extend to clamp the battery cell (200).

7. The membrane removal device (100) according to claim 2, characterized in that, The film cutting mechanism (120) further includes a lifting mechanism (125), which is used to drive the rotating clamping mechanism (121) to lift and lower, so as to lift the battery cell (200) to the film cutting height position. The laser cutting component (122) is used to laser cut the sleeve (210) of the battery cell (200) at the film cutting height position.

8. The membrane removal device (100) according to claim 1, characterized in that, The membrane removal mechanism (130) includes: The fixed gripper assembly (131) and the film-removing gripper assembly (132) are arranged opposite to each other. The fixed gripper assembly (131) is used to clamp one end of the battery cell (200). The film-removing gripper assembly (132) includes a telescopic drive (1321) and a film-removing gripper (1322). The telescopic drive (1321) is used to drive the film-removing gripper (1322) to extend or retract. The film-removing gripper (1322) is used to clamp the other end of the battery cell (200) and remove the film (210).

9. The membrane removal device (100) according to claim 1, characterized in that, Two film removal mechanisms (130) are provided, and the two film removal mechanisms (130) are arranged at intervals along the conveying direction of the main conveying line (110). The two film removal mechanisms (130) are staggered to remove the film (210) from both ends of the battery cell (200) respectively.

10. The membrane removal device (100) according to claim 1, characterized in that, The film removal device (100) further includes a film twisting mechanism (140), which is disposed downstream of the film cutting mechanism (120) and upstream of the film pulling mechanism (130). The film twisting mechanism (140) includes: The first gripper assembly (141) and the second gripper assembly (142) are configured to be positioned relative to each other as follows: One of them holds one end of the battery cell (200), and the other holds the other end of the battery cell (200) and twists the sleeve (210).

11. The membrane removal device (100) according to claim 1, characterized in that, The film removal device (100) further includes a detection and rejection mechanism (150), which is disposed downstream of the film removal mechanism (130). The detection and rejection mechanism (150) includes: The detection element (151) is used to detect whether the protective film (210) has detached from the battery cell (200); Translation module (152) is used to remove battery cells (200) with uncoated membranes from the main conveyor line (110).

12. The membrane removal device (100) according to claim 11, characterized in that, The detection and rejection mechanism (150) further includes an NG conveyor line (153) for receiving the removed NG battery cells (200) held by the translation module (152). The translation module (152) includes: Lifting gripper (1521) is used to hold the battery cell (200) with the membrane removed from the NG; Translation drive assembly (1522) is used to drive the lifting gripper (1521) to switch between the main conveyor line (110) and the NG conveyor line (153).

13. The membrane removal device (100) according to claim 12, characterized in that, The detection element (151) and the lifting gripper (1521) are both disposed at the execution end of the translation drive assembly (1522), and the detection element (151) and the lifting gripper (1521) are spaced apart along the translation direction of the translation drive assembly (1522). When the detection element (151) detects a battery cell (200) with the membrane removed (NG), the translation drive assembly (1522) drives the lifting gripper (1521) to move to the upper side of the main conveyor line (110).

14. The membrane removal device (100) according to claim 1, characterized in that, The film removal device (100) further includes a feeding mechanism (160), located upstream of the film cutting mechanism (120), for feeding battery cells (200) onto the main conveyor line (110). The feeding mechanism (160) includes: A flipping mechanism (161) is used to receive a battery cell (200) and flip the battery cell (200) to a horizontal position; A push rod mechanism (162) is used to push the horizontally positioned battery cell (200) into the main delivery line (110).

15. The membrane removal device (100) according to claim 14, characterized in that, The main conveyor line (110) includes a clamping fixture (111), the clamping fixture (111) includes two spaced-apart base portions (1111), and the feeding mechanism (160) further includes: A magnet support (163) is disposed on the upper side of the area of ​​the main conveyor line (110) that is connected to the flipping mechanism (161); A magnet (164) is provided on the magnet bracket (163) for magnetically attracting the battery cell (200) to assist the battery cell (200) in entering the clamping fixture (111) by the flipping mechanism (161).

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