Cylindrical battery cell production line and cylindrical battery production process

Abstract

The application belongs to the technical field of batteries, and discloses a cylindrical battery cell production line and a production process of a cylindrical battery. The cylindrical battery cell production line comprises, in sequence along the conveying direction of the battery cell, a first current collector plate welding unit, a battery cell glue pressing unit, a second current collector plate welding unit, a shell cleaning unit, a battery cell into shell unit, a shell penetration welding unit, a cap welding unit and a sealing nail welding unit. The current collector plate welding mechanism of the first current collector plate welding unit is used to weld the current collector plate supplied by the current collector plate feeding mechanism to the first pole. The current collector plate welding mechanism of the second current collector plate welding unit is used to weld the current collector plate supplied by the current collector plate feeding mechanism to the second pole. The battery cell glue pressing unit is used to press the insulating glue protruding from the edge of the first pole to the end face of the first pole. The shell cleaning unit is used to perform laser treatment on the shell. The battery cell into shell unit is used to weld the second pole to the inner bottom wall of the shell through the current collector plate. The cap welding unit is used to cover and pre-spot weld one end of the opening of the shell with the cap.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, and particularly relates to a cylindrical battery cell production line and a production process of cylindrical batteries. BACKGROUND

[0002] In the production process of cylindrical batteries, the battery cell needs to be processed in multiple ways to form a battery, and multiple different production devices are needed to produce the battery to facilitate the automatic production of the battery.

[0003] In the prior art, the degree of automation of multiple production devices is not high, and manual intervention is often needed, and the production process is not well planned, resulting in low production efficiency of the production line. SUMMARY

[0004] The main purpose of the present application is to provide a cylindrical battery cell production line and a production process of cylindrical batteries, which aims to solve the problem of low production efficiency of the production line.

[0005] To achieve the above-mentioned purpose, the present application provides a cylindrical battery cell production line, the opposite ends of the battery cell are a first pole and a second pole, comprising: a first current collector plate welding unit, a battery cell glue pressing unit, a second current collector plate welding unit, a shell cleaning unit, a battery cell into shell unit, a shell penetration welding unit, a cap welding unit, and a sealing pin welding unit are sequentially arranged along the conveying direction of the battery cell, or,

[0006] a first current collector plate welding unit, a second current collector plate welding unit, a battery cell glue pressing unit, a shell cleaning unit, a battery cell into shell unit, a shell penetration welding unit, a cap welding unit, and a sealing pin welding unit are sequentially arranged along the conveying direction of the battery cell;

[0007] The first current collector plate welding unit and the second current collector plate welding unit both include a current collector plate feeding mechanism and a current collector plate welding mechanism, the current collector plate welding mechanism of the first current collector plate welding unit is used to weld the current collector plate supplied by the current collector plate feeding mechanism to the first pole, and the current collector plate welding mechanism of the second current collector plate welding unit is used to weld the current collector plate supplied by the current collector plate feeding mechanism to the second pole;

[0008] The battery cell glue pressing unit is used to press the insulating glue protruding from the edge of the first pole to the end face of the first pole;

[0009] The shell cleaning unit is used for laser treatment of the shell;

[0010] The battery cell into shell unit is used to push the battery cell into the shell, and the second pole faces the inner bottom wall of the shell;

[0011] The shell penetration welding unit is used to weld the second pole to the inner bottom wall of the shell through the current collector plate.

[0012] A cap welding unit is configured to perform a pre-welding on the cap and one end of the opening of the shell;

[0013] A sealing pin welding unit comprises a cap cleaning mechanism configured to clean the end face of the cap and a sealing pin welding mechanism configured to sealingly weld the sealing pin to the liquid injection hole of the cap.

[0014] In an embodiment, the current collector plate feeding mechanism comprises:

[0015] A current collector plate conveying line is configured to convey the cup;

[0016] A current collector plate feeding device comprises a current collector plate feeding seat configured to mount a current collector plate cartridge;

[0017] A current collector plate positioning device comprises a first current collector plate positioning structure configured to hold the current collector plate in a first horizontal direction and a second current collector plate positioning structure configured to adjust the current collector plate held by the first current collector plate positioning structure in a second horizontal direction; and

[0018] A current collector plate moving device has a moving stroke between the current collector plate feeding device, the current collector plate positioning device and the current collector plate conveying line, and is configured to move the current collector plate at the current collector plate feeding device to the current collector plate positioning device or move the current collector plate at the current collector plate positioning device to the cup at the current collector plate conveying line.

[0019] In an embodiment, the current collector plate feeding mechanism further comprises a line pressing strip arranged at the current collector plate conveying line and configured to press the current collector plate into the cup.

[0020] In an embodiment, the cell pressing rubber unit comprises:

[0021] A cell moving device is configured to move the cell in a moving direction;

[0022] A cell pressing piece device is configured to press the connecting piece on the current collector plate of the cell;

[0023] A first rubber pressing driving device is configured to drive the cell after the pressing of the connecting piece to move in a second direction; and

[0024] A cell rubber pressing device is arranged at one side of the cell pressing piece device in the first direction;

[0025] When the cell rubber pressing device presses the end face of the cell coming from the second direction, the cell rubber pressing device is formed with a rubber pressing surface abutting against the end face of the cell.

[0026] In one embodiment, the cell pressing unit further includes a cell lifting device, which is located on the other side of the cell pressing device and is used to lift the connecting piece of the cell current collector after pressing.

[0027] In one embodiment, the housing cleaning unit includes:

[0028] A brush cleaning device is used to brush away impurities from the battery end caps.

[0029] A battery wiping device includes a cleaning cloth supply device, a cleaning positioning device, and a cleaning transfer device. The cleaning cloth supply device provides a pre-length shaped cloth. The cleaning positioning device positions the battery. The cleaning transfer device includes a cleaning transfer structure and a cleaning transfer mechanism. The cleaning transfer structure has a travel distance between the cleaning cloth supply device and the cleaning transfer structure to transfer the shaped cloth to the cleaning transfer structure. The cleaning transfer structure has a travel distance between the cleaning transfer structure and the cleaning positioning device to pick up the shaped cloth from the cleaning transfer structure and wipe the battery's electrolyte filling hole at the cleaning positioning device.

[0030] A laser cleaning device is used to clean the electrolyte filling hole of a battery and simultaneously roughen the axial end face of the battery at the electrolyte filling hole.

[0031] In one embodiment, the housing cleaning unit further includes a waste cloth collection device disposed between the battery wiping device and the laser cleaning device, the waste cloth collection device comprising:

[0032] A collection hopper is used to collect waste cloth after wiping.

[0033] The connecting pipe, with its inlet connected to the collection hopper; and,

[0034] A collection box is located at the outlet of the connecting pipe.

[0035] In one embodiment, the sealing pin welding unit includes a sealing pin feeding section movably disposed horizontally and vertically, the sealing pin feeding section being used to feed sealing pins to the battery's electrolyte filling hole; and,

[0036] The sealing pin welding mechanism is used to weld the sealing pins to the battery's electrolyte filling hole.

[0037] The present invention also provides a manufacturing process for a cylindrical battery, the cylindrical battery comprising a casing, a cell, and a cap, including a cylindrical cell production line according to any one of the above.

[0038] The manufacturing process of the cylindrical battery includes the following steps:

[0039] S1, welding a first current collector plate to the first pole of the battery cell;

[0040] S2, pressing the insulating glue protruding from the first pole edge of the battery cell to the end face of the first pole of the battery cell;

[0041] S3, welding a second current collector plate to the second pole of the battery cell;

[0042] S4, laser cleaning the shell;

[0043] S5, pushing the battery cell into the shell, wherein the second pole faces the inner bottom wall of the shell;

[0044] S6, welding the second pole of the battery cell to the inner bottom wall of the shell through the current collector plate;

[0045] S7, pre-point welding the cap to one end of the opening of the shell;

[0046] S8, welding a sealing pin to seal the injection hole of the battery cell.

[0047] The application also provides a cylindrical battery production process, the cylindrical battery comprising a shell, a battery cell and a cap, and comprising the cylindrical battery cell production line according to any one of the above;

[0048] The cylindrical battery production process comprises the following steps:

[0049] S1, welding a first current collector plate to the first pole of the battery cell;

[0050] S2, welding a second current collector plate to the second pole of the battery cell;

[0051] S3, pressing the insulating glue protruding from the first pole edge of the battery cell to the end face of the first pole of the battery cell;

[0052] S4, laser cleaning the shell;

[0053] S5, pushing the battery cell into the shell, wherein the second pole faces the inner bottom wall of the shell;

[0054] S6, welding the second pole of the battery cell to the inner bottom wall of the shell through the current collector plate;

[0055] S7, pre-point welding the cap to one end of the opening of the shell;

[0056] S8, welding a sealing pin to seal the injection hole of the battery cell.

[0057] The application provides a cylindrical battery cell production line, the battery cell includes a first pole and a second pole arranged oppositely, during the production process, the battery cell first passes through the first current collector plate welding unit in the conveying direction of the production, the current collector plate is welded on the first pole, then the battery cell can first pass through the battery cell glue pressing unit to press the insulating glue on the edge of the first pole flat, or the battery cell can first pass through the second current collector plate welding unit to weld the current collector plate on the second pole, after the current collector plate welding and the pressing of the insulating glue on both ends are completed, the battery cell passes through the shell cleaning unit, then passes through the battery cell shell entering unit to enter the shell into the cleaned shell, and the battery cell and the shell are welded when passing through the shell penetration welding unit, finally, the corresponding parts of the battery cell are welded through the cap welding unit and the sealing nail welding unit, the production of the battery cell is completed, the whole production line includes the whole process of the battery cell production, manual participation in the production steps is not needed, the production process is optimized, the production efficiency can be effectively improved, and the production quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 is a flow block diagram of the cylindrical battery cell production line provided by the embodiment scheme of the application;

[0059] Figure 2 is a structural schematic view of the current collector plate feeding mechanism provided by the application;

[0060] Figure 3 is a structural schematic view of the current collector plate positioning device in Figure 2 ;

[0061] Figure 4 is a structural schematic view of the current collector plate feeding device in Figure 2 ;

[0062] Figure 5 is a partial structural schematic view of the current collector plate conveying line in Figure 2 ;

[0063] Figure 6 is a structural schematic view of the battery cell glue pressing unit provided by the application;

[0064] Figure 7 is a structural schematic view of the first glue pressing driving device in Figure 6 ;

[0065] Figure 8 is a structural schematic view of the battery cell glue pressing device in Figure 6 ;

[0066] Figure 9 is a structural schematic view of the battery cell pressing piece device and the battery cell lifting piece device in Figure 6 ;

[0067] Figure 10 is a structural schematic view of the battery cell pressing piece device and the battery cell lifting piece device in Figure 9Front view of the middle cell pressing device and the cell lifting device;

[0068] Figure 11 Structure diagram of an embodiment of the shell cleaning unit provided by the application;

[0069] Figure 12 For Figure 11 Structure diagram of the brush cleaning device in the middle;

[0070] Figure 13 For Figure 11 Structure diagram of the laser cleaning device in the middle;

[0071] Figure 14 For Figure 11 Structure diagram of the battery sorting mechanism in the middle

[0072] Figure 15 For Figure 1 Structure diagram of the sealing pin welding unit in the middle.

[0073] BRIEF DESCRIPTION OF THE DRAWINGS

[0074] 100, cylindrical battery cell production line; 1, first current collector plate welding unit; 11, current collector plate feeding mechanism; 111, current collector plate conveying line; 1112, wire pressing strip; 112, current collector plate feeding device; 1121, current collector plate feeding seat; 1123, feeding jacking structure; 113, current collector plate positioning device; 1131, first positioning structure of current collector plate; 11311, first positioning part; 113111, first positioning section; 113112, second positioning section; 113113, first guide inclined surface; 1132, second positioning structure of current collector plate; 11321, positioning seat; 11322, second positioning part; 113221, second guide inclined surface; 113222, clamping convex part; 114, current collector plate moving device; 1141, current collector plate moving seat; 1142, rotating frame; 1143, adsorption part; 115, current collector plate detection device; 1151, detection seat; 1152, detection sensor; 2, battery cell glue pressing unit; 21, battery cell moving device; 211, sliding table; 212, bearing seat; 2121, supporting claw; 22, battery cell pressing device; 221 / 222 / 23, first glue pressing driving device; 231, first machine base; 232, push head mounting plate; 233, first driving cylinder; 234, push head; 235, second driving cylinder; 24, battery cell glue pressing device; 241, pressing head; 2411, glue pressing hole; 2412, via hole; 24121, annular protrusion; 24121A, second glue pressing plane; 24122, limiting groove; 242, glue pressing sleeve; 2421, sleeve body; 2422, glue pressing rib; 2422A, guide surface; 2422B, first glue pressing plane; 24211, limiting rib; 243, mounting seat; 244, centering pressing head; 2441, avoiding cavity; 2442, linear bearing; 245, elastic member; 25, lifting mechanism; 251, lifting seat; 252, lifting roller; 26, second glue pressing driving mechanism; 261, second machine base; 262, third driving cylinder; 3, second current collector plate welding unit; 4, shell cleaning unit; 41, brush cleaning device; 411, cleaning clamping structure; 412, brush structure; 4121, dust suction cover; 4122, air suction part; 42, battery wiping device; 43, laser cleaning device; 431, laser dust suction part; 44, waste cloth collecting device; 441, buffering mechanism; 442, code scanning mechanism; 443, rejecting mechanism; 5, battery cell into shell unit; 6, shell penetration welding unit; 7, cap welding unit; 8, sealing pin welding unit.

[0075] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0076] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0077] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, motion condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0078] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0079] Please refer to Figure 1 The present application provides a cylindrical battery cell production line 100, the opposite ends of the battery cell are a first pole and a second pole respectively, comprising: a first current collector disc welding unit 1, a battery cell glue pressing unit 2, a second current collector disc welding unit 3, a shell cleaning unit 4, a battery cell into shell unit 5, a shell penetration welding unit 6, a cap welding unit 7, and a sealing nail welding unit 8 are sequentially arranged along the direction of battery cell conveying.

[0080] The first current collector disc welding unit 1, the second current collector disc welding unit 3, the battery cell glue pressing unit 2, the shell cleaning unit 4, the battery cell into shell unit 5, the shell penetration welding unit 6, the cap welding unit 7, and the sealing nail welding unit 8 are sequentially arranged along the direction of battery cell conveying.

[0081] The first current collector plate welding unit 1 and the second current collector plate welding unit 3 each include a current collector plate feeding mechanism 11 and a current collector plate welding mechanism 12, the current collector plate welding mechanism 12 of the first current collector plate welding unit 1 is used to weld the current collector plate fed by the current collector plate feeding mechanism 11 to the first pole, and the current collector plate welding mechanism 12 of the second current collector plate welding unit 3 is used to weld the current collector plate fed by the current collector plate feeding mechanism 11 to the second pole; the cell rubber pressing unit 2 is used to press the insulating rubber protruding from the edge of the first pole to the end face of the first pole; the shell cleaning unit 4 is used to perform laser treatment on the shell; the cell into shell unit 5 is used to push the cell into the shell with the second pole facing the inner bottom wall of the shell; the shell penetration welding unit 6 is used to weld the second pole to the inner bottom wall of the shell through the current collector plate; the cap welding unit 7 is used to cover the opening end of the shell with the cap and perform pre-point welding; the sealing nail welding unit 8 includes a cap cleaning mechanism 81 and a sealing nail welding mechanism 82, the cap cleaning mechanism 81 is used to clean the end face of the cap, and the sealing nail welding mechanism 82 is used to seal weld the sealing nail at the liquid injection hole of the cap.

[0082] The present application provides a cylindrical cell production line 100, the cell including a first pole and a second pole arranged oppositely, in the production process, the cell first passes through the first current collector plate welding unit 1 to weld the current collector plate on the first pole, then can first pass through the cell rubber pressing unit 2 to press the insulating rubber at the edge of the first pole, or first pass through the second current collector plate welding unit 3 to weld the current collector plate on the second pole, after completing the welding of the current collector plates at both ends and the pressing of the insulating rubber, then pass through the shell cleaning unit 4, then pass through the cell into shell unit 5 to put the cell into the shell with the cleaning completed, and weld the cell and the shell when passing through the shell penetration welding unit 6, finally pass through the cap welding unit 7 and the sealing nail welding unit 8 to weld the corresponding parts of the cell, complete the production of the cell, the whole production line includes the whole process of cell production, without manual participation in the production steps, optimizes the production process, can effectively improve the production efficiency and ensure the production quality.

[0083] It should be noted that the cell includes a first pole and a second pole arranged oppositely, the first pole can be a negative pole, and the second pole is a positive pole, or the first pole is a positive pole, and the second pole is a negative pole; specifically, in the embodiment, the first pole is a positive pole, and the second pole is a negative pole.

[0084] Specifically, in the present embodiment, the busbar feeding mechanism 11 comprises a busbar conveying line 111, a busbar feeding device 112, a busbar positioning device 113, and a busbar moving device 114; the busbar conveying line 111 is used to convey the cup; the busbar feeding device 112 comprises a busbar feeding seat 1121, which is used to mount a busbar clip; the busbar positioning device 113 comprises a busbar first positioning structure 1131 and a busbar second positioning structure 1132, the busbar first positioning structure 1131 is used to hold the busbar along a first horizontal direction, and the busbar second positioning structure 1132 is used to adjust the busbar held by the busbar first positioning structure 1131 along a second horizontal direction; the busbar moving device 114 has an active stroke between the busbar feeding device 112, the busbar positioning device 113, and the busbar conveying line 111, and is used to move the busbar at the busbar feeding device 112 to the busbar positioning device 113, or move the busbar at the busbar positioning device 113 to the cup of the busbar conveying line 111.

[0085] When the current collector plate needs to be transferred into the cup on the current collector plate conveying line 111, the current collector plate transferring device 114 first moves to the current collector plate feeding device 112 to pick up the current collector plate in the current collector plate magazine of the current collector plate feeding seat 1121, and then moves to the current collector plate positioning device 113 to transfer the current collector plate to the current collector plate positioning device 113. The first positioning structure 1131 of the current collector plate first adjusts the position of the current collector plate in the first direction, and then the second positioning structure 1132 of the current collector plate adjusts the position of the current collector plate in the second direction. The current collector plate transferring device 114 then moves to the current collector plate conveying line 111 to accurately place the adjusted current collector plate into the cup on the current collector plate conveying line 111. In this way, by providing the cup to carry the current collector plate, providing the current collector plate conveying line 111 to convey the cup carrying the current collector plate to the battery shell, providing the current collector plate feeding device 112 to supply the current collector plate, and providing the current collector plate positioning device 113 to adjust the position of the current collector plate, the current collector plate transferring device 114 can accurately place the current collector plate into the cup. At the same time, by providing the transferring structure to transfer the current collector plate from the current collector plate feeding device 112 to the current collector plate positioning device 113 to adjust the position of the current collector plate, and then transfer the adjusted current collector plate to the current collector plate conveying line 111 to accurately place the current collector plate into the cup, the error of the current collector plate during the transfer process can be effectively reduced, and the current collector plate feeding mechanism 11 can accurately place the current collector plate into the cup, thereby solving the problem of large error of the current collector plate feeding mechanism 11 during the transfer of the current collector plate.

[0086] It should be noted that the first direction and the second direction can be various, for example, the first direction is front-to-back, the second direction is left-to-right, or the first direction is left-to-right, the second direction is front-to-back, etc., which is not limited by the present application. The two ends of the current collector plate of the cylindrical battery are circularly arranged to match the shape of the battery.

[0087] Further, please refer to Figure 2 and Figure 3The first positioning structure 1131 of the current collector plate comprises two first positioning portions 11311 and two first positioning driving devices. The two first positioning portions 11311 are arranged to be movable along a first horizontal direction and used to clamp the current collector plate. The two first positioning driving devices are respectively connected to the two first positioning portions 11311 and used to drive the two first positioning portions 11311 to move. In this way, the two first positioning portions 11311 are arranged to clamp the current collector plate, and the two first positioning driving devices are arranged to drive the two first positioning portions 11311 to move so as to clamp the current collector plate at a middle position of the two first positioning portions 11311.

[0088] It can be understood that there are various ways for the first positioning structure 1131 of the current collector plate to clamp the current collector plate. In other embodiments, the first positioning structure 1131 of the current collector plate comprises a first positioning reference portion and a first positioning clamping portion. The first positioning clamping portion is arranged to be movable along a first horizontal direction and used to push the current collector plate against the first positioning reference portion so as to clamp the current collector plate. Further, the first positioning driving device can be a driving cylinder or a driving oil cylinder, and the present application does not make any limitation in this regard.

[0089] In an embodiment of the present application, the first positioning portion 11311 is partially arranged to be concave, so that the two first positioning portions 11311 abut against each other to form an installation groove for the current collector plate to be installed in. In this way, the two first positioning portions 11311 can clamp the current collector plate along a first direction.

[0090] Since the current collector plate needs to be adjusted along a second direction after being adjusted along a first direction, in the present embodiment, the first positioning portion 11311 comprises a first positioning segment 113111 and a second positioning segment 113112. The first positioning segment 113111 is arranged to extend along a second horizontal direction. The second positioning segment 113112 is arranged at an end of the first positioning segment 113111 away from the second positioning structure 1132 of the current collector plate and extends along the first horizontal direction. In this way, the first positioning segment 113111 is arranged to clamp the current collector plate along the first direction, and the second positioning segment 113112 is arranged to abut against the current collector plate so as to cooperate with the second positioning structure 1132 of the current collector plate to adjust the position of the current collector plate. In this way, the first positioning segment 113111, the second positioning segment 113112 and the second positioning structure 1132 of the current collector plate form a three-point circle positioning, which helps to improve the positioning accuracy of the current collector plate positioning device 113.

[0091] In order to facilitate the collector plate moving device 114 to place the collector plate into the collector plate positioning device 113, in the embodiment, the first positioning part 11311 is provided with a first guide inclined surface 113113, which is arranged to be inclined downward from the outside of the first positioning part 11311 to the inside of the first positioning part 11311, so as to guide the collector plate into a preset position when the collector plate moving device 114 places the collector plate into the collector plate positioning device 113, so that the two first positioning parts 11311 can clamp and position the collector plate, thereby enabling the collector plate first positioning structure 1131 to adjust the position of the collector plate.

[0092] It should be noted that the above two associated technical features: "the first positioning part 11311 comprises a first positioning section 113111 and a second positioning section 113112, the first positioning section 113111 is arranged to extend along the second horizontal direction, and the second positioning section 113112 is arranged at one end of the first positioning section 113111 away from the collector plate second positioning structure 1132 and extends along the first horizontal direction", and "the first positioning part 11311 is provided with a first guide inclined surface 113113, which is arranged to be inclined downward from the outside of the first positioning part 11311 to the inside of the first positioning part 11311", can be set alternatively or simultaneously, and obviously, the simultaneous setting is better.

[0093] In an embodiment of the present application, the collector plate second positioning structure 1132 comprises a positioning seat 11321 and two second positioning parts 11322 arranged at the positioning seat 11321 along the first horizontal direction, and the positioning seat 11321 is arranged to be movable along the second horizontal direction, so that the movement of the positioning seat 11321 drives the two second positioning parts 11322 to move along the second direction, so as to drive the two sides of the collector plate to abut against the corresponding two first positioning parts 11311, thereby enabling the collector plate second positioning structure 1132 to adjust the position of the collector plate along the second direction. In another embodiment, the two second positioning parts 11322 are arranged to be movable along the first horizontal direction, and when the two second positioning parts 11322 clamp the collector plate along the first direction, the position of the collector plate can move along the second direction, thereby enabling the collector plate second positioning structure 1132 to adjust the position of the collector plate along the second direction.

[0094] It should be noted that the two related technical features mentioned above, "the positioning seat 11321 can be movably set along the second horizontal direction" and "the two second positioning parts 11322 can be movably set along the first horizontal direction", can be set either one or both. Obviously, setting them both at the same time is better.

[0095] Furthermore, in one embodiment, the second positioning structure 1132 of the collector plate further includes a second positioning drive device, which is driven and connected to the positioning seat 11321 to drive the positioning seat 11321 to move along the second direction. It is understood that the second positioning drive device can be a drive cylinder, a drive hydraulic cylinder, etc., and the present invention does not limit this. In another embodiment, the second positioning structure 1132 of the collector plate further includes two second positioning clamping drive devices, which are respectively driven and connected to two second positioning parts 11322 so that the two second positioning parts 11322 can clamp the collector plate.

[0096] Furthermore, clamping protrusions 113222 are provided on opposite sides of the two second positioning portions 11322. From the inner side of the second positioning portion 11322 towards its outer side, the width of the clamping protrusions 113222 gradually increases in the second direction. This allows the two clamping protrusions 113222 to move the collector plate along the second direction when the two second positioning portions 11322 approach each other along the first direction, thereby enabling the second positioning structure 1132 of the collector plate to adjust the position of the collector plate along the second direction. It can be understood that the collector plate has clamping grooves corresponding to the clamping protrusions 113222, so that when the second positioning portion 11322 moves along the first direction, it drives the collector plate to move along the second direction.

[0097] In one embodiment of the present invention, the second positioning part 11322 is provided with a second guide slope 113221, which is inclined downward from the outside of the second positioning part 11322 toward the inside of the second positioning part 11322, so that when the collecting plate transfer device 114 puts the collecting plate into the collecting plate positioning device 113, the collecting plate is guided to a preset position, so that the two second positioning parts 1132 can clamp and position the collecting plate, thereby enabling the second positioning structure 1132 of the collecting plate to adjust the position of the collecting plate.

[0098] In one embodiment of the present invention, a plurality of the collector plate positioning devices 113 are provided, and the plurality of collector plate positioning devices 113 are spaced apart along a first direction. In this way, by providing a plurality of collector plate positioning devices 113, a plurality of collector plates can be positioned simultaneously, thereby helping to improve the feeding efficiency of the collector plate feeding mechanism 11.

[0099] To enable the collecting tray transfer device 114 to transfer one collecting tray at a time, in this embodiment, the collecting tray positioning device 113 includes a collecting tray detection device 115. The collecting tray detection device 115 includes a detection base 1151, a detection sensor 1152, and a detection drive device. The detection base 1151 is movably arranged along a second horizontal direction. The detection sensor 1152 is located on the detection base 1151 and is used to detect whether the collecting trays of the first positioning structure 1131 are stacked. The detection drive device drives the detection base 1151. Thus, by setting the detection base 1151, the detection sensor 1152 is driven to move along the second direction, enabling the detection sensor to transfer one collecting tray at a time. The sensor 1152 can avoid the collector tray transfer device 114 to prevent interference between the sensor 1152 and the collector tray transfer device 114, facilitating the collector tray transfer device 114 in picking up and placing the collector tray. By setting the sensor 1152, the number of collector trays on the collector tray positioning device 113 is detected, preventing multiple collector trays from appearing, so that the collector tray transfer device 114 can transfer one collector tray at a time. Simultaneously, by setting the detection drive device to drive the detection seat 1151 to move, the sensor 1152 can avoid the collector tray transfer device 114, preventing interference between the sensor 1152 and the collector tray transfer device 114. It is understood that the detection drive device can be a drive cylinder or a drive hydraulic cylinder, etc., and the present invention is not limited to this.

[0100] Furthermore, the collecting plate detection device 115 and the collecting plate positioning device 113 are configured as positioning groups in a one-to-one correspondence. Multiple positioning groups are configured, and multiple positioning seats 11321 are spaced apart along the first direction. In this way, by setting multiple positioning groups, multiple collecting plates can be positioned simultaneously, thereby helping to improve the feeding efficiency of the collecting plate feeding mechanism 11.

[0101] In one embodiment of the present invention, please refer to Figure 4The collector plate feeding device 112 includes a collector plate feeding seat 1121 and a feeding clamping structure 1122. The collector plate feeding seat 1121 is used for mounting the collector plate clip. The feeding clamping structure 1122 includes a feeding holding part 11221 and a feeding driving device. The feeding holding part 11221 is movably arranged in the vertical direction to press the collector plate feeding seat 1121 against a fixing member. The feeding driving device is driven by the feeding holding part 11221. The feeding holding part 11221 is used to drive the feeding plate to move vertically. Thus, by providing the collecting plate feeding seat 1121, the collecting plate clip is installed, and by providing the feeding holding part 11221, the collecting plate clip is pressed against the collecting plate feeding seat 1121, preventing the collecting plate clip from rising synchronously with the collecting plate. Simultaneously, by providing the feeding drive device, the feeding holding part 11221 is moved to facilitate loading and unloading of the collecting plate clip. Furthermore, the collecting plate feeding device 112 is horizontally movable to transport the collecting plate to the feeding position, which facilitates the collecting plate transfer device 114 picking up the collecting plate and allows the unused collecting plate feeding device 112 to be moved out of the feeding position.

[0102] In one embodiment, a plurality of collecting discs are stacked vertically within the collecting disc magazine. Further, the collecting disc magazine includes a magazine sleeve for driving and a magazine base plate movably mounted vertically within the magazine sleeve. The feeding device further includes a feeding lifting structure 1123 that drives and connects to the magazine base plate to lift the magazine base plate upwards, so that the collecting disc transfer device 114 can pick up the collecting discs within the collecting disc magazine. It is understood that the feeding lifting structure 1123 can be a driving cylinder, a driving hydraulic cylinder, etc., as long as it can drive the magazine base plate upwards; this invention does not limit this.

[0103] In one embodiment of the present invention, please refer to Figure 2The collecting tray transfer device 114 includes a collecting tray transfer base 1141, a rotating frame 1142, and multiple adsorption parts 1143. The collecting tray transfer base 1141 is movably arranged horizontally, and its moving stroke passes through the collecting tray feeding device 112, the positioning mechanism, and the collecting tray conveyor line 111. The rotating frame 1142 is rotatably mounted on the collecting tray transfer base 1141 about an axis extending vertically. The multiple adsorption parts 1143 are mounted on the rotating frame 1142 and are spaced apart circumferentially along the rotating frame 1142 to pick up the collecting tray. Thus, by setting the collecting tray transfer base 1141, the adsorption parts 1143 can be positioned on the collecting tray feeding device 112, the collecting tray conveyor line 111, and the collecting tray conveyor line 111. The tray positioning device 113 switches between the tray conveying line 111 and the tray positioning device 113 to move the tray from the tray feeding device 112 to the tray positioning device 113 for adjustment, and then moves the adjusted tray to the tray conveying line 111 for accurate placement into the cup. By setting the rotating frame 1142 to provide multiple adsorption parts 1143, it is easier to pick up multiple trays at once, improving the feeding efficiency of the tray feeding mechanism 11. At the same time, by setting multiple adsorption parts 1143 to pick up and put down the tray, the tray transfer device 114 can transfer the tray from the tray feeding device 112 to the cup on the tray conveying line 111.

[0104] It is understood that the collecting plate transfer device 114 also includes a transfer driving device and a transfer rotating device. The transfer driving device drives and connects to the collecting plate transfer seat 1141, and the transfer rotating device drives and connects to the rotating frame 1142. Thus, by setting the transfer driving device, the collecting plate transfer seat 1141 is driven to move horizontally, and by setting the transfer rotating device, the rotating frame 1142 is driven to rotate, so as to switch the adsorption part 1143 at different positions to pick up and put down the collecting plate.

[0105] In order to fix the collector plate inside the cup, in this embodiment, please refer to Figure 5 The collecting tray feeding mechanism 11 further includes a pressing line 1112 disposed on the collecting tray conveying line 111 to press the collecting tray into the cup. Thus, by setting the pressing line 1112, the collecting tray is pressed into the receiving groove of the cup, preventing the position of the collecting tray from moving when the cup moves.

[0106] It is understood that the cup is provided with a receiving groove for the collection plate to be installed, and the upper end surface of the cup is provided with a connecting groove that connects to the receiving groove. The connecting groove is used to accommodate the pressure line. The connecting groove includes two connecting groove sections, which are respectively provided on both sides of the receiving groove, so that the pressure line can press the collection plate tightly into the receiving groove.

[0107] On the other hand, please see Figure 6 The cell pressing unit 2 includes a cell transfer device 21, a cell pressing device 22, a first pressing drive device 23, and a cell pressing device 24. The cell transfer device 21 is used to carry the cell and move it along the moving direction. The cell pressing device 22 is used to press the connecting piece on the cell current collector. The first pressing drive device 23 is used to drive the pressed cell to move along the second direction. The cell pressing device 24 is located on one side of the cell pressing device 22 along the first direction. When the cell pressing device 24 presses the end face of the cell coming from the second direction, the cell pressing device 24 forms a pressing surface that abuts against the end face of the cell.

[0108] The technical solution of this invention uses a cell pressing device 22 to press the connecting piece on the cell current collector before pressing, which avoids the easily damaged area of ​​the connecting piece during pressing. The cell transfer device 21 then transfers the pressed cell to the corresponding position of the cell pressing device 24. The first pressing drive device 23 drives the pressed cell to move toward the cell pressing device 24 until the end face of the cell comes into contact with the pressing surface of the cell pressing device 24 for pressing. This presses the adhesive paper around the cell to the end face of the cell, achieving a good pressing effect, avoiding damage to the connecting piece, thereby improving product yield and reducing costs and increasing efficiency.

[0109] Specifically, the battery cell transfer device 21 includes a slide 211 and a support 212. The slide 211 extends along a first direction, and the support 212 is mounted on the slide 211 and can move along the first direction. The support 212 is provided with claws 2121 to support the battery cell. The battery cell can slide along the claws 2121 along a second direction under the push of the first adhesive driving device 23.

[0110] Specifically, please refer to Figure 7The first pressure-pressing drive device 23 includes a first base 231, a pusher mounting plate 232, a first drive cylinder 233, a pusher 234, and a second drive cylinder 235. The first base 231 is disposed on the side of the pressure-pressing surface of the pressure-pressing mechanism, and the pusher mounting plate 232 is movably mounted on the base along a second direction. The first drive cylinder 233 is used to drive the pusher mounting plate 232. The pusher 234 is movably mounted on the pusher mounting plate 232 along the second direction, and the second drive cylinder 235 is used to drive the pusher 234. With this configuration, the first drive cylinder 233 drives the pusher mounting plate 232, causing the pusher 234 to initially push the battery cell to a position close to the pressure head 241, thereby controlling the second drive cylinder 235 to drive the pusher 234, so that the pusher 234 slowly pushes the battery cell against the pressure-pressing surface for pressure-pressing.

[0111] In one embodiment of the present invention, please refer to Figure 8 The battery cell pressing device 24 includes a pressing head 241 and a pushing sleeve 242; the pressing head 241 is provided with a pressing hole 2411; the pushing sleeve 242 is movably installed in the pressing hole 2411 along a second direction; wherein, when pressing the battery cell end face, the battery cell end face abuts against the pushing sleeve 242 until the pressing head 241 and the pushing sleeve 242 together form a pressing surface that abuts against the battery cell end face, and the connecting pieces all avoid the pressing head 241 and the pushing sleeve 242. With this configuration, when the battery cell reaches the corresponding position of the battery cell pressing device 24, the first pressing drive device 23 first pushes the battery cell until the end face of the battery cell abuts against the push sleeve 242, and further pushes the battery cell to move. The battery cell pushes the push sleeve 242 to move away from the first pressing drive device 23 until the end face of the battery cell abuts against the push sleeve 242 and the pressing head 241 at the same time. At this time, the pressing head 241 and the push sleeve 242 together form a pressing surface that abuts against the end face of the battery cell. The part of the adhesive paper protruding from the end face of the battery cell is completely pressed against the end face of the battery cell by the pressing surface, thus completing the pressing. During the pressing process, the connecting piece avoids the pressure head 241 and the push sleeve 242, thus preventing damage to the connecting piece.

[0112] Furthermore, the pressure head 241 is made of an elastic material, specifically one or more of silicone, thermoplastic polyurethane, polycarbonate, or a polymer. This design prevents the battery cell from being scratched and allows for deformation during the bonding process, thereby improving the bonding effect.

[0113] In one embodiment of the present invention, the push sleeve 242 includes a sleeve body 2421 and a plurality of pressure ribs 2422 disposed at one end of the sleeve body 2421. The plurality of pressure ribs 2422 are arranged at intervals along the circumference of the sleeve body 2421. The pressure head 241 is provided with a plurality of circumferentially arranged pressure holes 2411. The plurality of pressure ribs 2422 move in a corresponding manner within the plurality of pressure holes 2411. With this configuration, when the battery cell reaches the corresponding position of the battery cell pressure device 24, the first pressure driving device 23 first pushes the battery cell until the end face of the battery cell abuts against the pressure ribs 2422, and further pushes the battery cell to move. The battery cell pushes the push sleeve 242 to move away from the first pressure driving device 23 until the end face of the battery cell abuts against the pressure ribs 2422 and the pressure head 241 at the same time. At this time, the pressure head 241 and the pressure ribs 2422 together form a pressure surface that abuts against the end face of the battery cell.

[0114] In one embodiment of the present invention, the end face of the pressure rib 2422 facing away from the sleeve body 2421 includes a guide surface 2422A and a first pressure surface 2422B; the guide surface 2422A is used to guide the incoming battery cell; the first pressure surface 2422B is used to abut against the end face of the battery cell. With this configuration, when the first pressure driving device 23 pushes the battery cell until the end face of the battery cell abuts against the push sleeve 242, the first pressure driving device 23 pushes the battery cell and the adhesive paper to move along the guide surface 2422A so that the battery cell faces the first pressure surface 2422B. At the same time, during the movement of the adhesive paper, the adhesive paper is gathered towards the center position along the guide surface 2422A, thereby pushing the battery cell to abut against the first pressure surface 2422B, and further pushing the battery cell and the push sleeve 242 to move until the battery cell abuts against the pressure head 241 and the first pressure surface 2422B together, thus completing the pressure bonding.

[0115] Specifically, the guide surface 2422A is inclined, and the inclination direction is from the outside of the push sleeve 242 toward its inside, in a direction close to the pressure pushing structure, and the first pressure plane 2422B extends radially.

[0116] Furthermore, the guide surface 2422A is at least partially arc-shaped, curving outwards towards the outside of the push sleeve 242.

[0117] It should be noted that when different cell pressing devices 22 press the connecting pieces on the cell current collector, the connecting pieces have different pressing positions. One position is where the connecting piece extends along the axial direction of the cell, and the other position is where the connecting piece extends along the radial direction of the cell. Correspondingly, the cell adhesive pressing device 24 is configured with different structures for the pressing positions corresponding to different cell pressing devices 22. If the cell pressing device 22 presses the connecting piece to the position extending radially along the cell, the side of the pressing head 241 near the first adhesive pressing drive device 23 is set as a flat end face, and multiple adhesive pressing holes 2411 are opened on the end face. This configuration allows for clearance.

[0118] In one embodiment of the present invention, the cell pressing device 22 presses the connecting piece to a position extending along the axial direction of the cell. Please refer to [link to previous document]. Figure 6 and Figure 8 The battery cell pressing device 24 also includes a mounting base 243, a centering pressure head 244, and an elastic element 245. The centering pressure head 244 is movably mounted on the mounting base 243 in the second direction via a linear bearing 2442. The centering pressure head 244 abuts against the end of the sleeve body 2421 away from the pressing rib 2422. The centering pressure head 244 forms a clearance cavity 2441. The connecting piece on the battery cell current collector extends into the clearance cavity 2441 through the pressure head 241 and the pushing sleeve 242. The elastic element 245 (shown in the figure as the active stroke of the elastic element 245) is located between the mounting base 243 and the centering pressure head 244 to drive the pushing element to abut against the pushing sleeve 242. With this configuration, during the process of the first pressing drive device 23 pushing the battery cell, the connecting piece on the battery cell current collector extends into the clearance cavity 2441 through the pressure head 241 and the push sleeve 242. The connecting piece forms clearance with the pressure head 241 and the push sleeve 242. After the first pressing drive device 23 pushes the battery cell until the end face of the battery cell abuts against the push sleeve 242 and the pressure head 241 to complete the pressing, the first pressing drive device 23 moves away from the battery cell pressing device 24, while the battery cell and the pressing sleeve return to the position before abutting against the battery cell under the action of the elastic element 245.

[0119] Specifically, the mounting base 243 has a mounting hole extending in the second direction. The outer ring of the linear bearing 2442 is disposed within the mounting hole, and the centering pressure head 244 is provided with a mounting rod, which is connected to the inner ring of the linear bearing 2442. This arrangement allows the centering pressure head 244 to be movably mounted on the mounting base 243 via the linear bearing 2442, enabling the centering pressure head 244 to move stably in the second direction and thus align with the push-fit sleeve 242 for stable adhesive application.

[0120] The elastic element 245 is a compression spring, and the clearance cavity 2441 has an opening on the side facing the push sleeve 242 so that the connecting piece can be inserted into the clearance cavity 2441.

[0121] Specifically, a through hole 2412 is provided on the pressure head 241 to allow the connecting piece on the power core collector to pass through.

[0122] Furthermore, multiple pressure-sealing holes 2411 are arranged circumferentially along the through hole 2412.

[0123] Furthermore, an annular protrusion 24121 is provided on the inner sidewall of the through hole 2412, and multiple adhesive pressing holes 2411 are provided on the annular protrusion 24121. With this arrangement, the annular protrusion 24121 forms a second adhesive pressing plane 24121A. During adhesive pressing, the first adhesive pressing drive device 23 pushes the battery cell until the end face of the battery cell simultaneously abuts against the first adhesive pressing plane 2422B and the second adhesive pressing plane 24121A.

[0124] Furthermore, the inner wall of the through hole 2412 is recessed with a limiting groove 24122, and correspondingly, the outer periphery of the sleeve body 2421 is protruded with a limiting rib 24211 to limit the range of motion of the push sleeve 242.

[0125] In one embodiment of the present invention, please refer to Figure 9 and Figure 10 The tablet pressing mechanism includes a tablet pressing base 221 and a tablet pressing assembly. The tablet pressing assembly is installed on the tablet pressing base 221 and is used to bend the connecting piece on the current collector of the battery cell downward.

[0126] In one embodiment of the present invention, the tableting assembly includes a plurality of tableting rollers 222; the plurality of tableting rollers 222 are rotatably mounted on a tableting base 221 about an axis extending in a second direction; the plurality of tableting rollers 222 are arranged in a first direction and are at least partially inclined, the inclination direction being downward towards the direction of the cell pressing device 24. With this arrangement, when the cell transfer device 21 carries the cell to the corresponding position of the tableting structure, the connecting piece is located below the tableting rollers. As the cell moves, the tableting rollers 222 tilt downward, causing the connecting piece to gradually press down, thereby achieving tableting.

[0127] Specifically, the pressing seat 221 is located on one side of the cell transfer device 21 along the first direction of its travel, and performs pressing when the cell transfer device 21 carries the cell to move.

[0128] Specifically, multiple pressing rollers 222 near the cell pressing device 22 are arranged horizontally to ensure that the connecting sheet does not twist after pressing, which facilitates subsequent pressing operations.

[0129] In one embodiment of the present invention, the cell pressing unit 2 further includes a lifting mechanism 25, which is located on the other side of the cell pressing device 22 and is used to lift the connecting piece of the cell current collector after pressing. This arrangement allows the connecting piece to be returned to its initial position after the pressing operation.

[0130] In one embodiment of the present invention, the lifting mechanism 25 includes a lifting seat 251 and a lifting assembly mounted on the lifting seat 251. The lifting assembly is used to bend the connecting piece on the current collector of the battery cell upward. The lifting assembly includes a plurality of lifting rollers 252. The plurality of lifting rollers 252 are rotatably mounted on the lifting seat 251 about an axis extending in a second direction. The plurality of lifting rollers 252 are arranged in a first direction and are at least partially inclined, with the inclination direction being downward towards the direction of the battery cell pressing device 24. With this arrangement, when the battery cell transfer device 21 carries the battery cell to the corresponding position of the lifting mechanism 25, the connecting piece is located above the pressure roller. As the battery cell moves, the pressure roller 222 tilts upward, causing the connecting piece to gradually rise and be restored.

[0131] Furthermore, the highest position of the lifting assembly and the lowest position of the pressing assembly are at the same height. This arrangement ensures that the connecting piece can completely return to its original position when the pressing assembly lifts it.

[0132] In one embodiment of the present invention, the cell pressing device 24 is movably disposed along a second direction; the cell pressing unit 2 further includes a second pressing drive mechanism 26 to drive the cell pressing device 24 to move. With this configuration, when the first pressing drive device 23 drives the pressed cell to move toward the cell pressing device 24, the second pressing drive mechanism 26 can synchronously drive the cell pressing device 24 to move toward the first pressing drive device 23; after the cell pressing device 24 completes pressing, the cell can be pushed back to the corresponding position of the cell pressing device 24, thereby enabling the cell transfer device 21 to transport the cell for the next operation.

[0133] Specifically, the second pressing drive mechanism 26 includes a second base 261 and a third drive cylinder 262. The battery cell pressing device 24 is movably mounted on the second base 261. The third drive cylinder 262 is used to drive the battery cell pressing device 24. The mounting base 243, pressing base 221 and lifting plate of the battery cell pressing device 24 are mounted on the second base 261.

[0134] In one embodiment of the present invention, the working process of the cell bonding unit 2 is as follows:

[0135] In the first step, the cell transfer device 21 is in the initial position. The cell to be pressed is placed on the cell transfer device 21. The cell transfer device 21 is controlled to move the cell to the corresponding position of the cell pressing device 22. Then, the cell transfer device 21 is controlled to slowly move the cell toward the cell pressing device 24. The connecting piece passes through multiple pressing rollers 222 of the cell pressing device 22 with gradually decreasing height and is gradually bent downward until the cell passes through the cell pressing device 22 and the connecting piece is bent to the pressing position.

[0136] The second step involves controlling the cell transfer device 21 to move the cell to the corresponding position with the cell pressing device 24, and then controlling the first pressing drive device 23 to push the cell toward the cell pressing device 24. Under the push of the first pressing drive device 23, the cell and the adhesive paper move along the guide surface 2422A of the pressing rib 2422 until the end of the cell abuts against the first pressing plane 2422B. The adhesive paper is pressed against the end face of the cell. The cell moves further to abut against the second pressing plane 24121A. During this process, the connecting piece extends into the clearance cavity 2441 through the pressing head 241 and the pushing sleeve 242.

[0137] The third step is to control the second pressing drive mechanism 26 to drive the cell pressing device 24, so that the cell retracts to the corresponding position of the cell pressing device 24.

[0138] The fourth step involves controlling the cell transfer device 21 to move the cell to the corresponding position of the lifting mechanism 25; then controlling the cell transfer device 21 to slowly move the cell away from the cell pressing device 24. The connecting piece passes through multiple pressing rollers 222 of the cell pressing device 22, which are gradually raised in height, and is gradually bent upwards until the cell passes through the cell pressing device 22 and the connecting piece is restored.

[0139] The present invention also proposes a cell bonding method, which is based on a cell bonding unit 2. The specific structure of the cell bonding unit 2 is as described in the above embodiment. The cell bonding method includes the following steps:

[0140] S1. Control the cell transfer device 21 to transfer the cell to the cell pressing device 22 to press the connecting piece on the cell current collector to adjust the connecting piece to the middle of the cell.

[0141] S2. Control the cell transfer device 21 to move the cell to the cell pressing device 24, and control the first pressing drive device 23 to drag the cell toward the cell pressing device 24 to press the cell end face.

[0142] S3. Control the cell transfer device 21 to transfer the cell to the lifting mechanism 25 to lift the connecting piece on the cell current collector so as to move the connecting piece back to its initial position.

[0143] The technical solution of the present invention controls the cell pressing device 22 to press the connecting piece on the cell current collector before pressing, and then controls the cell transfer device 21 to transfer the pressed cell to the corresponding position of the cell pressing device 24 for pressing. Finally, the cell transfer device 21 lifts the connecting piece on the cell current collector to restore it, thereby achieving a good pressing effect, avoiding damage to the connecting piece and not affecting subsequent processes, improving product yield, and reducing costs and increasing efficiency.

[0144] On the other hand, please see Figure 11 The casing cleaning unit 4 includes a brush cleaning device 41, a battery wiping device 42, and a laser cleaning device 43. The brush cleaning device 41 is used to brush away impurities on the battery end cap. The battery wiping device 42 includes a cleaning cloth supply device, a cleaning positioning device, and a cleaning transfer device. The cleaning cloth supply device is used to provide a pre-set length of shaped cloth. The cleaning positioning device is used to position the battery. The cleaning transfer device includes a cleaning transfer structure and a cleaning transfer structure. The cleaning transfer structure has a travel between the cleaning cloth supply device and the cleaning transfer structure to transfer the shaped cloth to the cleaning transfer structure. The cleaning transfer structure has a travel between the cleaning transfer structure and the cleaning positioning device to pick up the shaped cloth on the cleaning transfer structure and wipe the battery's liquid injection hole at the cleaning positioning device. The laser cleaning device 43 is used to clean the battery's liquid injection hole and simultaneously roughen a portion of the battery's end face in the circumferential direction of the liquid injection hole.

[0145] In the technical solution of this invention, the battery to be cleaned is first conveyed to the brush cleaning device 41, which performs a first cleaning to remove impurities from the battery end cap, resulting in a battery to be wiped. Then, the battery is conveyed to the battery wiping device 42, where a cleaning cloth supply device provides a pre-formed cloth of a preset length. Simultaneously, a cleaning positioning device positions the battery to be wiped within the cleaning positioning device. Finally, a cleaning transfer device transports the formed cloth to the end of the battery to be wiped for wiping, achieving automated wiping of the second cleaning step, resulting in a clean battery. Finally, the clean battery is conveyed to the laser cleaning device 43, which uses laser to clean the liquid injection hole on the end cap of the battery and roughens a portion of the circumferential end face of the liquid injection hole, completing a third cleaning operation. This configuration improves the wiping quality and efficiency of the battery wiping device 42, and through three-stage cleaning, further enhances the cleaning quality of the lithium battery liquid injection hole cleaning device 1000.

[0146] In one embodiment of the present invention, please refer to Figure 12The brush cleaning device 41 includes a cleaning clamping structure 411 and a brush structure 412. The cleaning clamping structure 411 includes two clamping parts spaced apart horizontally, at least one of which is a movable clamping part. The movable clamping part is movably arranged horizontally so that the two clamping parts can clamp the battery. The brush structure 412 is movably arranged vertically and can rotate along a vertically extending axis. The brush structure 412 is used to brush away impurities on the end cap of the battery. With this configuration, when the battery to be brushed moves to the brush cleaning device 41, the two clamping parts of the cleaning clamping structure 411 can move closer to each other and jointly clamp the battery to be brushed to position it. Then, the brush structure 412 moves downward to meet the battery to be brushed and rotates along a vertically extending axis after meeting it, so that the bristles of the brush structure 412 can rotate relative to the battery to be brushed, thereby brushing away impurities on the end cap of the battery to be brushed.

[0147] It is understandable that during the process of brushing away impurities on the end cap of the battery to be cleaned by the brush structure 412, the impurities brushed off by the brush structure 412 may adhere to other parts of the battery or other processing devices, thus affecting the subsequent processing of the battery and the normal operation of other processing devices. Therefore, it is necessary to collect the impurities brushed off by the brush structure 412. In a further embodiment of the present invention, the brush cleaning device 41 also includes a brush dust collection mechanism, which is disposed on the brush structure 412 to absorb the impurities brushed off by the brush structure 412, thereby further improving the cleaning efficiency of the brush cleaning device 41.

[0148] It should be noted that the present invention does not limit the specific structural form of the brush suction structure. In one embodiment of the present invention, the brush cleaning device 41 can be configured as a dust suction hood 4121 and an air suction unit 4122. The dust suction hood 4121 is disposed on the brush structure 412 to cover the end cap of the battery. The air suction unit 4122 is disposed on the dust suction hood 4121 and communicates with the interior of the dust suction hood 4121. The air suction unit 4122 is used to absorb the impurities brushed off by the brush structure 412. When the brush structure 412 brushes off the impurities on the end cap of the battery to be removed, the dust suction hood 4121 can collect the impurities brushed off by the brush structure 4122 inside the dust suction hood 4121 to prevent the impurities from escaping. At the same time, the air suction unit 4122 starts to work and can absorb the impurities inside the dust suction hood 4121, thereby collecting all the impurities brushed off by the brush structure 412 to ensure the cleaning efficiency of the brush cleaning device 41.

[0149] In another embodiment of the present invention, the brush cleaning device 41 can also be configured as a dust suction hood 4121 and a dust removal part. The dust suction hood 4121 is used to cover the end cap of the battery, and the dust removal part is used to wipe the battery. With this configuration, when the brush structure 412 brushes away impurities, the dust suction hood 4121 can collect the impurities brushed off by the brush structure 412 inside the dust suction hood 4121 to prevent the impurities from scattering. After the brush structure 412 has finished brushing, the dust removal part moves to wipe all parts of the battery, thereby removing the impurities brushed off by the brush structure 412 and adhering to the battery. In this way, the cleaning effect of the brush cleaning device 41 can also be guaranteed.

[0150] Furthermore, in this invention, the cleaning and feeding device, the cleaning and positioning device, and the cleaning and transferring device are arranged at intervals along a straight line. The cleaning and feeding device cuts the fabric and provides shaped fabric. The cleaning and transferring device's cleaning transfer structure transfers the shaped fabric to the transferring structure. The transferring structure of the cleaning and transferring device transports the shaped fabric to the end of the battery to wipe the liquid injection hole. After wiping, the cleaning and transferring device transports the waste fabric to the collection hopper to collect the waste fabric, thus realizing the automation of the entire process from cutting to recycling of the fabric and greatly improving production efficiency.

[0151] In one embodiment of the present invention, in order to enable the cleaning and feeding device to provide a pre-set length of shaped fabric, the cleaning and feeding device includes: a feeding seat, a feeding reel, a feeding structure, and a cutting structure; the feeding seat is disposed on the machine base; the feeding reel is disposed on the feeding seat for placing the fabric roll; the feeding structure is disposed on the feeding seat for further transferring the fabric on the feeding reel; and the cutting structure is disposed on the feeding seat for cutting the fabric to form a shaped fabric.

[0152] The technical solution of this invention involves placing a fabric roll on a fabric feed reel, using a fabric feeding structure to further transfer the fabric from the reel, and then controlling a cutting structure to cut the fabric to form a shaped fabric of a suitable size.

[0153] As one embodiment of the fabric supply seat, the fabric supply seat is provided with a limiting groove that can accommodate the fabric. The limiting groove extends in the left and right directions to limit the movement direction of the fabric.

[0154] Furthermore, as one embodiment of the fabric feeding structure, to further transfer the fabric on the fabric feed reel, the fabric feeding structure includes a fabric feeding roller structure and a clamping roller drive motor; the fabric feeding roller structure includes a driving roller and a driven roller disposed on the fabric feed base, the driving roller and the driven roller respectively disposed on both sides of the fabric for clamping the fabric; the clamping roller drive motor is disposed on the fabric feed base and drives the driving roller. The driving roller and the driven roller of the fabric feeding roller structure press the fabric from both sides of the fabric, and then rotate under the drive of the clamping roller drive motor, causing the fabric to extend from one side of the fabric feeding roller structure, thereby further transferring the fabric. When the fabric is transferred to the positioning mechanism, the fabric feeding roller structure provides a movable end extending out of the fabric feeding roller structure, providing conditions for cutting.

[0155] Furthermore, to improve the fabric conveying efficiency, multiple anti-slip ridges are provided on the outer wall of the driving roller and / or driven roller, and these ridges are arranged in an alternating pattern. The anti-slip ridges reduce slippage during fabric conveying and improve conveying efficiency.

[0156] When the fabric on the feed roll is almost used up, if the battery-operated wiping device 42 is still running, it will cause the device to idle and result in missed wiping, greatly affecting production efficiency. As one implementation of the fabric feeding structure, a feed sensor is installed on the feed base to detect the amount of fabric on the feed roll, and a control center and alarm device are also included. When the feed sensor detects that the fabric on the feed roll is about to run out, it sends a signal to the control center, which then activates the alarm device to alert the operator; when the feed sensor detects that the fabric on the feed roll is completely used up, it sends a signal to the control center, which then shuts down the battery-operated wiping device 42.

[0157] As one embodiment of the fabric feeding structure, the fabric feeding structure also includes a pressure roller disposed on the fabric supply seat; the limiting groove has a matching groove corresponding to the pressure roller for accommodating the pressure roller. The pressure roller presses the fabric down into the matching groove but restricts the movement of the fabric, merely tensioning the fabric to prevent fabric wrinkles from affecting subsequent cutting.

[0158] As one embodiment of the fabric feeding structure, the fabric feeding structure also includes a plurality of guide rollers disposed on the fabric feeding seat. The plurality of guide rollers are disposed at intervals along the vertical direction on the fabric feeding seat to tension the fabric and prevent the fabric from wrinkling.

[0159] As one implementation of the fabric feeding structure, the fabric feeding reel, the fabric feeding structure, and the cutting structure are correspondingly configured as fabric feeding groups. Two fabric feeding groups are provided, one on each side of the fabric feeding base. The configuration of the fabric feeding groups enables the simultaneous supply of multiple pieces of shaped fabric on a single fabric feeding base.

[0160] As one embodiment of the cutting structure, to enable the cutting structure to cut the fabric, the cutting structure includes a cutting blade and a cutting drive device; the cutting blade is movably mounted on the fabric supply seat along the front and back to cut the fabric; the cutting drive device is located on the fabric supply seat and is connected to the cutting blade for driving. When the fabric is transferred to the positioning mechanism, the cutting blade cuts the fabric under the drive of the cutting drive device to form a shaped fabric.

[0161] Specifically, the cutting drive device is a cutting cylinder, which drives the cutting blade to move back and forth for cutting.

[0162] As one implementation of the cutting blade, the cutting blade is positioned on one side of the fabric, with its blade perpendicular to the side edge of the fabric. The cutting blade moves back and forth under the action of a cutting cylinder to side-cut the fabric. During side-cutting, one side of the fabric makes point contact with the blade, resulting in a better cutting effect.

[0163] Furthermore, to ensure the fabric remains stable during cutting, the cutting structure also includes two cutting pressure heads mounted vertically on the fabric supply seat, spaced apart on both sides of the cutting blade. When the fabric is transported to the positioning mechanism, the cutting pressure heads move downwards to hold the fabric in place, thus fixing the fabric on both sides of the cutting blade and improving the cutting effect.

[0164] Specifically, a pressure head cylinder is installed on the fabric supply seat to drive the cutting pressure head to press and hold the fabric.

[0165] The fabric supply seat is equipped with a pressure table corresponding to the pressure head. The pressure table is close to the movement path side of the cleaning and transfer structure. When the pressure head is lifted, the formed fabric falls above the cleaning and transfer structure.

[0166] Preferably, the cleaning and transfer structure is provided with a transfer seat movably mounted on the machine base, and the cutting pressure head is positioned above the transfer seat when it moves to the positioning mechanism, so as to directly press the fabric onto the transfer seat.

[0167] In one embodiment of the present invention, in order to improve the wiping effect, a nozzle is provided on the cloth supply seat to spray wiping agent onto the cloth at the cloth supply mechanism.

[0168] The technical solution of the present invention improves the wiping effect of the battery by setting a nozzle in the cloth feeding mechanism to spray a wiping agent onto the cloth.

[0169] Preferably, the nozzle is positioned on the side of the cutting head near the positioning mechanism, so that the wiping agent is sprayed onto the shaped fabric.

[0170] In one embodiment of the present invention, the cleaning and material transfer structure includes: a material transfer seat, a support platform, an elastic element, and a material transfer drive device; the material transfer seat is movably installed on the machine base in the front-back and left-right directions, and the material transfer seat is provided with a support groove; the support platform is movably installed in the support groove in the up-down direction to support the shaped fabric; the elastic element is provided between the material transfer seat and the support platform; the material transfer drive device is connected to the material transfer seat to drive the material transfer seat to move.

[0171] The technical solution of the present invention uses a material transfer drive device to drive the material transfer seat to move back and forth and left and right between the fabric supply mechanism and the transfer mechanism, so as to transfer the shaped fabric to the transfer mechanism.

[0172] The working process of the cleaning transfer structure and the cutting structure is as follows: When the fabric feeding structure moves the fabric to the fabric feeding mechanism, the transfer drive device drives the transfer seat to reach below the cutting pressure head; then the cutting pressure head presses down to press the fabric tightly onto the support platform; then the cutting cylinder drives the cutting blade to cut the fabric; after the cutting is completed, the cutting pressure head rises, and at this time, the formed fabric is located on the support platform.

[0173] Specifically, the elastic element is a spring structure, which allows the support platform to be mounted vertically on the transfer seat.

[0174] Specifically, the material transfer drive device includes an adjusting cylinder and a material transfer cylinder. The adjusting cylinder is fixedly installed on the machine base and has a forward and backward movable slider. The material transfer cylinder is fixedly installed on the movable slider. The material transfer cylinder has a left and right mounting slider. The mounting slider has a moving stroke from the fabric feeding mechanism to the material transfer structure. The material transfer seat is fixedly installed on the mounting slider and can move forward and backward and left and right.

[0175] As one embodiment of the cleaning and transferring structure, the cleaning and transferring structure also includes a transferring gripper that is movably mounted vertically on the transferring seat to clamp the shaped fabric onto the support platform. The shaped fabric is fixed during the process of the cleaning and transferring structure transferring the shaped fabric to the transfer structure.

[0176] Specifically, a pressure cylinder is also installed on the mounting slider to drive the material transfer gripper to move up and down.

[0177] In one embodiment of the present invention, the cleaning and transferring structure includes: a transferring seat, a claw structure, a transferring pressure head, and a transferring drive device; the transferring seat is movably installed on the machine base in the horizontal and vertical directions; the claw structure includes two transferring claws movably installed on the transferring seat in the left and right directions to support the shaped fabric; the transferring pressure head is disposed on the transferring seat and is located between the two transferring claws; the transferring drive device drives the connected transferring claws to drive the transferring claws to move.

[0178] The technical solution of the present invention uses a material transfer seat to move horizontally and vertically on the machine base, driving the material transfer claw to move between the material transfer structure and the positioning mechanism, so as to transport the shaped cloth to the end of the battery for wiping.

[0179] The working process of the cleaning transfer structure and the cleaning conveyor structure is as follows: When the cleaning conveyor structure transfers the shaped fabric to the conveyor structure, the shaped fabric is located on the support seat, and the conveyor grippers of the cleaning transfer structure release the fabric; then the conveyor seat moves to the position where the conveyor claws are directly above the conveyor seat; then the moving drive device drives the conveyor claws to move downward; when the lower end face of the conveyor head contacts the support table, the moving drive device continues to drive the conveyor claws to press down until the elastic element is compressed. At this time, the support surface of the support table is pressed down by the conveyor head to the top surface of the support groove, and the shaped fabric forms a shape with convex sides and concave center; then, the conveyor claws move closer to each other to support the convex sides of the shaped fabric.

[0180] Specifically, the moving drive device includes a left-right slide and a right-up slide. The left-right slide is mounted on the machine base and passes through the feeding mechanism and the positioning mechanism. The output end of the left-right slide is provided with a mounting plate, and the right-up slide is fixedly connected to the mounting plate. The output end of the right-up slide is equipped with a transfer seat, so that the transfer seat is movably mounted on the machine base in the horizontal and vertical directions.

[0181] As one embodiment of the cleaning and material transfer structure, the side wall of the bearing tank is provided with a first clearance groove to avoid the material transfer claw of the cleaning and material transfer structure.

[0182] As one embodiment of the cleaning and material transfer structure, the bearing groove is provided with a first clearance groove, and the material transfer claw is provided with a second clearance groove. The second clearance groove is provided corresponding to the first clearance groove to avoid the material transfer claw of the cleaning and material transfer structure.

[0183] In one embodiment of the present invention, the transfer claw has an upward supporting surface, which is located above the lower end face of the transfer head, so that the shaped fabric can be pressed between the transfer head and the transfer claw.

[0184] The technical solution of the present invention sets the supporting surface of the transfer claw above the lower end face of the transfer pressure head, so that when the transfer claw supports the forming fabric, the forming fabric maintains a state of convexity on both sides and concaveness in the center, so that the forming fabric can be pressed between the transfer pressure head and the transfer claw during the transfer process.

[0185] In one embodiment of the present invention, the claw structure wipes the battery end in a rotating manner. The transfer seat includes: a transfer body and a transfer rotating seat; the transfer body is movably mounted on the base in the horizontal and vertical directions; the transfer rotating seat is rotatably mounted on the transfer body about an axis extending in the vertical direction; wherein, the claw structure and the transfer pressure head are disposed on the transfer rotating seat.

[0186] The technical solution of the present invention uses a claw structure and a transfer head to transfer the shaped fabric to the end of the battery, and the transfer head presses the shaped fabric onto the end of the battery. The rotation of the transfer rotating seat drives the claw structure and the transfer head to rotate at the end of the battery, so that the shaped fabric held by the claw structure and the transfer head rotates relative to the end of the battery, thereby wiping the battery.

[0187] The material transfer body has a rotary motor, and the output end of the rotary motor is equipped with a material transfer rotating seat.

[0188] In one embodiment of the present invention, a receiving hole is recessed in the middle of the material transfer head.

[0189] The technical solution of the present invention uses a receiving hole to ensure that when the shaped fabric is rotated and wiped, the wiping agent sprayed on the shaped fabric is collected in the receiving hole, so that the shaped fabric will not be spun dry under the action of centrifugal force.

[0190] Specifically, the positioning protrusion is also provided with a radial groove to connect the receiving hole to the edge of the transfer head, providing a path for the collection of wiping agent.

[0191] Of course, it is understood that this invention does not limit the specific material of the wiping agent. In one embodiment of this invention, the wiping agent may be alcohol; in another embodiment, it may be acetone; and in other embodiments, it may be other liquids with cleaning capabilities. Specifically, the material can be selected according to the requirements.

[0192] As one embodiment of the material transfer head, the lower end of the material transfer head is provided with a positioning protrusion for positioning in the mating groove of the battery.

[0193] As one embodiment of the cleaning positioning device, the cleaning positioning device includes a positioning conveying structure and a positioning clamping structure. The positioning conveying structure is disposed on the base and is used to convey the battery to the positioning mechanism; the positioning clamping structure is disposed on the base and is used to clamp and fix the battery to the positioning mechanism.

[0194] As one embodiment of the positioning and conveying structure, the positioning and conveying structure includes a positioning cylinder that is horizontally movably mounted on the base, the positioning cylinder being used to support and push the battery.

[0195] Specifically, a conveying cylinder is installed on the base to drive the positioning cylinder to move horizontally.

[0196] As one embodiment of the positioning and conveying structure, the positioning and clamping structure includes two clamping plates, which are horizontally and movably installed on both sides of the positioning cylinder to clamp the battery.

[0197] Specifically, the base is equipped with two clamping cylinders to drive the two clamping plates to move horizontally.

[0198] The working process of the cleaning transfer device and the cleaning positioning device is as follows: After the positioning conveying structure transports the battery to the positioning mechanism, the positioning clamping structure clamps and fixes the battery at the positioning mechanism; the claw structure of the cleaning transfer structure transfers the cut fabric to the battery's liquid injection hole and rotates and wipes it.

[0199] In one embodiment of the present invention, the waste cloth collection device 44 includes: a collection hopper, a connecting pipe, and a collection box; the collection hopper is located at the waste cloth collection mechanism and is used to collect the waste cloth after wiping; the inlet of the connecting pipe is connected to the collection hopper; and the collection box is located at the outlet of the connecting pipe.

[0200] The working process of the cleaning and transferring device and the waste cloth collection device 44 is as follows: After the battery is wiped clean, the claw structure of the cleaning and transferring device transfers the waste cloth to the collection hopper. The claw structure enters from the material inlet of the collection hopper. When the claw structure is released, the waste cloth enters the collection box along the hopper and the connecting pipe, so as to realize the automation of the entire process of cloth from cutting to recycling, which greatly improves production efficiency.

[0201] As one implementation of the collection hopper, the collection hopper is equipped with an air outlet to blow air into the hopper's inlet. This prevents waste fabric from becoming stuck with the claw structure, thereby increasing the recycling speed.

[0202] Furthermore, the inlet of the collection hopper is equipped with a shield to prevent waste cloth from being blown out of the hopper when the air outlet blows air into the inlet of the collection hopper.

[0203] Optionally, the shielding element is a brush, which isolates the hopper while allowing the claw structure to freely enter and exit the hopper's inlet.

[0204] Similarly, please see Figure 13 When cleaning batteries with a laser cleaning device, it is also necessary to remove dust from the areas of the battery to be cleaned. In one embodiment of the present invention, the laser cleaning device 43 includes a laser dust collection part 431, which is used to absorb impurities generated by laser cleaning when the laser cleaning device 43 cleans the battery with laser, so as to further ensure the cleanliness of the cleaning.

[0205] It should be noted that during battery transportation, some batteries may be defective. Even after three-stage cleaning, the sealing nails cannot be welded onto these defective batteries. Therefore, to avoid cleaning defective batteries and thus affecting the efficiency of the cleaning equipment, please refer to [the relevant documentation / reference needed]. Figure 14In one embodiment of the present invention, a battery sorting mechanism is further provided on the side of the brush cleaning device 41 away from the battery wiping device 42. The battery sorting mechanism includes a buffer mechanism 441, a barcode scanning mechanism 442, and a rejection mechanism 443. The buffer mechanism 441 is used to buffer multiple batteries. The barcode scanning mechanism 442 is provided above the buffer mechanism 441 and is used to scan the batteries on the buffer mechanism 441 to detect whether the batteries are qualified. The rejection mechanism 443 includes a push rod that is movably arranged in the horizontal direction. The push rod is used to push the unqualified batteries detected by the barcode scanning mechanism 442 away from the buffer mechanism 441 and unload them as NG (not qualified) materials. With this setup, when the batteries are transported to the battery sorting mechanism, the buffer mechanism 441 first buffers multiple batteries sequentially. During the buffering process, the barcode scanning mechanism 442 scans the batteries on the buffer mechanism 441 to check if they are qualified. Qualified batteries can be further transported to the brush cleaning device 41 for brush cleaning. For unqualified batteries, the push rod of the rejection structure can move towards the unqualified batteries to push them away from the buffer mechanism 441 and unload them, thus preventing the cleaning device from cleaning unqualified batteries and ensuring lithium cleaning efficiency.

[0206] In one embodiment of the present invention, the buffer mechanism 441 can be configured as a rotating platform that rotates vertically. The rotating platform has multiple buffer positions arranged circumferentially, each buffer position being able to buffer one battery. It is understood that the rotating platform is located on the battery transport path, and at least one buffer position of the rotating platform is located on the battery input path, and at least one buffer position is located on the battery output path. Thus, during the battery transport process, the battery will move to one of the buffer positions of the rotating platform, and the rotating platform can drive the battery to rotate. During the rotation, the scanning mechanism 442 will detect whether the battery on the buffer position is qualified. If the battery is qualified, when the rotating platform drives the battery to rotate to the output path, the battery will leave the buffer position to be transported to the next mechanism. If the battery is unqualified, during the process of the rotating belt driving the battery to rotate to the output path, the push rod will abut against and push the unqualified battery, causing the battery to be removed from the rotating platform for NG unloading.

[0207] On the other hand, please see Figure 15 The sealing nail welding unit 8 includes a sealing nail feeding part that is movably arranged in the horizontal and vertical directions, and the sealing nail feeding part is used to drive the sealing nail to the electrolyte injection hole of the battery.

[0208] Based on the above-mentioned cylindrical cell production line, the present invention also provides a manufacturing process for a cylindrical battery, wherein the cylindrical battery includes a casing, a cell, and a cap.

[0209] In the first embodiment provided by the present invention, the manufacturing process of the cylindrical battery includes the following steps:

[0210] S1. A first current collector is welded to the first pole of the battery cell;

[0211] S2. Press the insulating adhesive protruding from the edge of the first electrode on the battery cell to the end face of the first electrode of the battery cell;

[0212] S3. Weld a second current collector to the second pole of the battery cell;

[0213] S4. Perform laser cleaning on the housing;

[0214] S5. Push the battery cell into the housing, wherein the second electrode faces the inner bottom wall of the housing;

[0215] S6. Weld the second electrode of the battery cell to the inner bottom wall of the housing via the current collector;

[0216] S7. Pre-weld the cap to one end of the opening of the shell.

[0217] S8. Weld a sealing pin to seal the electrolyte injection hole of the battery cell.

[0218] In the second embodiment provided by the present invention, the manufacturing process of the cylindrical battery includes the following steps:

[0219] S1. A first current collector is welded to the first pole of the battery cell;

[0220] S2. Weld a second current collector to the second pole of the battery cell;

[0221] S3. Press the insulating adhesive protruding from the edge of the first electrode on the battery cell to the end face of the first electrode of the battery cell;

[0222] S4. Perform laser cleaning on the housing;

[0223] S5. Push the battery cell into the housing, wherein the second electrode faces the inner bottom wall of the housing;

[0224] S6. Weld the second electrode of the battery cell to the inner bottom wall of the housing via the current collector;

[0225] S7. Pre-weld the cap to one end of the opening of the shell.

[0226] S8. Weld a sealing pin to seal the electrolyte injection hole of the battery cell.

[0227] This invention provides a manufacturing process for a cylindrical battery. The battery cell includes a first electrode and a second electrode arranged opposite to each other. During the production process, the battery cell first passes through a first current collector welding unit along the production conveying direction, where a current collector is welded onto the first electrode. Then, it can first pass through a battery cell pressing unit to flatten the insulating adhesive at the edge of the first electrode, or it can first pass through a second current collector welding unit to weld a current collector onto the second electrode. After completing the welding of the current collectors at both ends and the flattening of the insulating adhesive, it passes through a housing cleaning unit, then through a battery cell housing insertion unit to insert the battery cell into the cleaned housing. The battery cell and housing are welded together when passing through a housing penetration welding unit. Finally, the corresponding parts of the battery cell are welded together through a cap welding unit and a sealing nail welding unit, completing the battery cell production. The entire production line includes the entire battery cell production process without manual intervention in the production steps, optimizing the production process, effectively improving production efficiency, and ensuring production quality.

[0228] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A cylindrical battery cell production line, wherein the two opposite ends of the battery cell are respectively a first electrode and a second electrode, characterized in that, include: Along the cell conveying direction, the system sequentially includes a first collector plate welding unit, a cell pressing unit, a second collector plate welding unit, a housing cleaning unit, a cell insertion unit, a housing penetration welding unit, a cap welding unit, and a sealing nail welding unit; or, Along the cell conveying direction, there are sequentially arranged a first collector plate welding unit, a second collector plate welding unit, a cell pressing unit, a housing cleaning unit, a cell entering the housing unit, a housing penetration welding unit, a cap welding unit, and a sealing nail welding unit; Both the first collector plate welding unit and the second collector plate welding unit include a collector plate feeding mechanism and a collector plate welding mechanism. The collector plate welding mechanism of the first collector plate welding unit is used to weld the collector plate supplied by the collector plate feeding mechanism to the first pole, and the collector plate welding mechanism of the second collector plate welding unit is used to weld the collector plate supplied by the collector plate feeding mechanism to the second pole. The cell pressing unit is used to press the insulating adhesive protruding from the edge of the first electrode flat to the end face of the first electrode; The housing cleaning unit is used for laser treatment of the housing; A cell insertion unit is used to push the cell into the housing, with its second electrode facing the inner bottom wall of the housing; The housing penetration welding unit is used to weld the second electrode to the inner bottom wall of the housing via the current collector; The cap welding unit is used to perform pre-tack welding of the cap to one end of the opening of the housing; The sealing nail welding unit includes a cap cleaning mechanism and a sealing nail welding mechanism. The cap cleaning mechanism is used to clean the end face of the cap, and the sealing nail welding mechanism is used to weld the sealing nail to the injection hole of the cap.

2. The cylindrical battery cell production line according to claim 1, characterized in that, The feeder mechanism of the manifold includes: The collector tray conveyor line is used to transport cups; A collector plate feeding device includes a collector plate feeding base, which is used for mounting a collector plate clip; A collector plate positioning device includes a first collector plate positioning structure and a second collector plate positioning structure. The first collector plate positioning structure is used to clamp the collector plate along a first horizontal direction, and the second collector plate positioning structure is used to adjust the collector plate clamped in the first positioning structure along a second horizontal direction. A collecting tray transfer device has a movable stroke between the collecting tray feeding device, the collecting tray positioning device, and the collecting tray conveying line, for transferring the collecting tray at the collecting tray feeding device to the collecting tray positioning device, or transferring the collecting tray at the collecting tray positioning device to the cup of the collecting tray conveying line.

3. The cylindrical battery cell production line according to claim 2, characterized in that, The collecting tray feeding mechanism also includes a pressure line provided on the collecting tray conveyor line to press the collecting tray tightly inside the cup.

4. The cylindrical battery cell production line according to claim 1, characterized in that, The cell bonding unit includes: A battery cell transfer device is used to carry battery cells and move them along the direction of movement. A cell pressing device is used to press the connecting pieces on the current collector of the battery cell. A first pressure-adhesive driving device is used to drive the pressed battery cell to move along a second direction; and... A cell pressing device is disposed on one side of the cell pressing device along the first direction; When the cell pressing device presses adhesive onto the end face of the cell that is fed from the second direction, the cell pressing device forms a pressing surface that abuts against the end face of the cell.

5. The cylindrical battery cell production line according to claim 4, characterized in that, The cell pressing unit also includes a cell lifting device, which is located on the other side of the cell pressing device and is used to lift the connecting piece of the cell current collector after pressing.

6. The cylindrical battery cell production line according to claim 1, characterized in that, The housing cleaning unit includes: A brush cleaning device is used to brush away impurities from the battery end caps. A battery wiping device includes a cleaning cloth supply device, a cleaning positioning device, and a cleaning transfer device. The cleaning cloth supply device provides a pre-length shaped cloth. The cleaning positioning device positions the battery. The cleaning transfer device includes a cleaning transfer structure and a cleaning transfer structure. The cleaning transfer structure has a travel distance between the cleaning cloth supply device and the cleaning transfer structure to transfer the shaped cloth to the cleaning transfer structure. The cleaning transfer structure has a travel distance between the cleaning transfer structure and the cleaning positioning device to pick up the shaped cloth from the cleaning transfer structure and wipe the battery's electrolyte filling hole at the cleaning positioning device. A laser cleaning device is used to clean the electrolyte filling hole of a battery and simultaneously roughen the axial end face of the battery at the electrolyte filling hole.

7. The cylindrical battery cell production line according to claim 6, characterized in that, The housing cleaning unit further includes a waste cloth collection device disposed between the battery wiping device and the laser cleaning device, the waste cloth collection device comprising: A collection hopper is used to collect waste cloth after wiping. The connecting pipe, with its inlet connected to the collection hopper; and, A collection box is located at the outlet of the connecting pipe.

8. The cylindrical battery cell production line according to claim 1, characterized in that, The sealing nail welding unit includes a sealing nail feeding part that is movably arranged horizontally and vertically, and the sealing nail feeding part is used to drive the sealing nail to the battery's electrolyte injection hole.

9. A manufacturing process for a cylindrical battery, the cylindrical battery comprising a casing, a cell, and a cap, characterized in that, Includes the cylindrical battery cell production line according to any one of claims 1 to 8; The manufacturing process of the cylindrical battery includes the following steps: S1. A first current collector is welded to the first pole of the battery cell; S2. Press the insulating adhesive protruding from the edge of the first electrode on the battery cell to the end face of the first electrode of the battery cell; S3. Weld a second current collector to the second pole of the battery cell; S4. Perform laser cleaning on the housing; S5. Push the battery cell into the housing, wherein the second electrode faces the inner bottom wall of the housing; S6. Weld the second electrode of the battery cell to the inner bottom wall of the housing via the current collector; S7. Pre-weld the cap to one end of the opening of the shell. S8. Weld a sealing pin to seal the electrolyte injection hole of the battery cell.

10. A manufacturing process for a cylindrical battery, the cylindrical battery comprising a casing, a cell, and a cap, characterized in that, Includes the cylindrical battery cell production line according to any one of claims 1 to 8; The manufacturing process of the cylindrical battery includes the following steps: S1. A first current collector is welded to the first pole of the battery cell; S2. Weld a second current collector to the second pole of the battery cell; S3. Press the insulating adhesive protruding from the edge of the first electrode on the battery cell to the end face of the first electrode of the battery cell; S4. Perform laser cleaning on the housing; S5. Push the battery cell into the housing, wherein the second electrode faces the inner bottom wall of the housing; S6. Weld the second electrode of the battery cell to the inner bottom wall of the housing via the current collector; S7. Pre-weld the cap to one end of the opening of the shell. S8. Weld a sealing pin to seal the electrolyte injection hole of the battery cell.

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