Cylindrical battery automatic assembly line and production process thereof

By setting up multiple stations on the battery production line to weld and inspect them in turn along the main conveyor line of the battery cell, the problem of collision damage during parts transfer is solved, and the efficiency and quality of battery production are improved.

CN119108593AActive Publication Date: 2024-12-10WUHAN YIFI LASER CORP LTD
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Patent Information

Application Number
CN202411229877.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-03
Publication Date
2024-12-10
Estimated Expiration
2044-09-03

AI Technical Summary

Technical Problem

In the existing battery production process, parts are prone to collision and damage during the transportation process between different production lines and workshops, resulting in high defect rate and low production efficiency.

Method used

A cylindrical battery automatic assembly line is designed, and the negative electrode current collecting plate welding, battery cell shelling, outer insulation sheet loading, nut lock welding, positive electrode current collecting plate welding, Sealing nail welding and quality inspection realize automatic, efficient and precise production of battery cells, and reduce the number of parts and components.

Benefits of technology

It effectively reduces the defective products and waste rate caused by transportation, improves production efficiency, and realizes automated, efficient and precise production of batteries.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides an automatic cylindrical battery assembly line and a production process thereof, and the automatic cylindrical battery assembly line is provided with a first production station, a second production station, a third production station, a fourth production station, a fifth production station and a sixth production station. The battery cell main conveying line sequentially passes through a first production device, a second production device, a third production device, a fourth production device, a fifth production device and a sixth production device in the cylindrical battery automatic assembly line; a plurality of production devices are used for welding a negative collector plate of a battery cell, putting the battery cell into a shell, feeding an outer insulating sheet, locking a nut on the battery cell, welding the nut and a battery cell pole, welding a positive collector plate, welding a sealing nail, sleeving a film on the battery cell and detecting the battery cell, so that automatic, efficient and precise production of the cylindrical battery is realized.
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Description

Technical Field

[0001] The present invention relates to the technical field of cylindrical battery production, and in particular to an automatic cylindrical battery assembly line and a production process thereof. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] There are many types of batteries on the market with different structures. Some are designed with studs on the cylindrical battery cells. During the battery production process, nuts need to be locked into the studs.

[0004] For the processing of such batteries, in the existing processing procedures, each station is often scattered in different workshops, and the parts of the upstream process are stored together after processing and transported to the downstream process for processing. During the storage and transportation process, the parts are prone to collision and damage, which increases the probability of defective and waste products, and the production efficiency is low. Summary of the invention

[0005] The main purpose of the present invention is to provide a cylindrical battery automatic assembly line and a production process thereof with low defective rate and high production efficiency.

[0006] To achieve the above object, the technical solution of the present invention is implemented as follows: an automatic cylindrical battery assembly line, the automatic cylindrical battery assembly line is sequentially formed with a first production station, a second production station, a third production station, a fourth production station, a fifth production station and a sixth production station along the battery processing direction, and the automatic cylindrical battery assembly line comprises:

[0007] The main battery cell conveyor line passes through the first production station, the second production station, the third production station, the fourth production station, the fifth production station and the sixth production station in sequence, and is used to convey semi-finished battery cells;

[0008] A first production device, provided at the first production station, for welding the negative electrode collector of the battery cell;

[0009] The second production device is provided at the second production station, and is used to put the battery cell into the shell, and sequentially feed the outer insulating sheet to the negative end of the battery cell, lock the nut into the negative electrode post of the battery cell, and weld the nut to the negative electrode post of the battery cell;

[0010] A third production device, provided at the third production station, for welding the positive electrode collector plate of the battery cell;

[0011] A fourth production device, provided at the fourth production station, for cleaning the battery cell injection hole and welding the sealing pin to the battery cell injection hole;

[0012] A fifth production device, provided at the fifth production station, for cleaning the surface of the battery cell and applying a film to the surface of the battery cell;

[0013] The sixth production device is arranged at the sixth production station and is used for performing quality inspection on the battery cells.

[0014] A production process for cylindrical batteries, based on the above cylindrical battery automatic assembly line, the production process for cylindrical batteries includes the following steps:

[0015] welding a negative electrode current collector to a negative electrode of a battery cell by a first production device;

[0016] After the battery cell with the negative electrode collector plate welded is placed into the shell by the second production device, the outer insulating sheet is sequentially fed to the negative end of the battery cell, the nut is locked into the negative electrode post of the battery cell, and the nut is welded to the negative electrode post of the battery cell;

[0017] The positive electrode current collector is welded to the positive electrode of the battery cell after the nut welding is completed by a third production device;

[0018] Cleaning the cell injection hole of the cell that has completed the welding of the positive electrode collector plate and welding the sealing nail to the cell injection hole by the fourth production device;

[0019] The fifth production device cleans the surface of the battery cell after the sealing pin welding and sets a film on the surface of the battery cell;

[0020] The sixth production device is used to perform quality inspection on the battery cells that have been coated with thin films.

[0021] The beneficial effects of the present invention are embodied in:

[0022] According to the present invention, a first production device, a second production device, a third production device, a fourth production device, a fifth production device and a sixth production device are sequentially arranged along a main cell conveyor line, and the main cell conveyor line connects a plurality of production devices in series to perform welding of negative collector plates of the cell, cell shelling, external insulating sheet loading, cell locking nuts, nut and cell pole welding, positive collector plate welding, sealing pin welding, cell sleeve film and cell testing, thereby realizing automated, efficient and precise production of cylindrical batteries, effectively reducing the number of transfers of components between different production lines and different production workshops, and reducing the probability of defective and waste products generated due to transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the attached picture:

[0024] Figure 1 This is a schematic diagram of the production process of the cylindrical battery automatic assembly line of the present invention;

[0025] Figure 2 It is a structural layout diagram of the first production device in the present invention;

[0026] Figure 3 It is a partial enlarged view of the first production device in the present invention;

[0027] Figure 4 It is a structural layout diagram of the negative electrode current collector welding unit described in the present invention;

[0028] Figure 5 It is a structural schematic diagram of the first material taking component in the present invention;

[0029] Figure 6 This is a structural layout diagram of the battery cell transport tooling described in the present invention;

[0030] Figure 7 It is a structural layout diagram of the negative electrode current collector flipping component of the present invention;

[0031] Figure 8 It is a structural layout diagram of the negative electrode current collector press fitting tooling of the present invention;

[0032] Fig. 9 It is a structural layout diagram of the negative electrode current collector welding assembly described in the present invention;

[0033] Fig.10 This is a structural layout diagram of the negative electrode insulating sheet unit of the present invention;

[0034] Fig.11 for Fig.10 Magnified view at A in the middle;

[0035] Fig.12 It is a structural layout diagram of the second production device in the present invention;

[0036] Fig.13 It is a structural layout diagram of the shell loading assembly described in the present invention;

[0037] Fig.14 It is a structural layout diagram of the vertical shell entry assembly described in the present invention;

[0038] Fig.15 It is a structural layout diagram of the external insulation sheet feeding unit described in the present invention;

[0039] Fig.16 It is a structural layout diagram of the guide assembly described in the present invention;

[0040] Fig.17 This is a structural layout diagram of the battery core screw locking unit described in the present invention;

[0041] Fig.18 It is a structural layout diagram of the nut feeding unit described in the present invention;

[0042] Fig.19It is a structural layout diagram of the material distribution component described in the present invention;

[0043] Fig. 20 It is a structural layout diagram of the third production device described in the present invention;

[0044] Fig.21 It is a structural layout diagram of the pre-spot welding unit and the full welding unit described in the present invention;

[0045] Fig. 22 It is a structural layout diagram of the positive electrode current collector plate transport assembly described in the present invention;

[0046] Fig.23 It is a structural layout diagram of the fourth production device described in the present invention;

[0047] Fig.24 It is a structural layout diagram of the fifth production device described in the present invention;

[0048] Fig.25 A three-dimensional view of the film cover unit of the present invention;

[0049] Fig.26 This is a structural view of the film guide shaft described in the present invention;

[0050] Fig. 27 It is a structural layout diagram of the sixth production device described in the present invention;

[0051] Fig.28 It is a structural schematic diagram of the mobile mechanism described in the present invention;

[0052] Fig.29 It is a structural schematic diagram of the flipping mechanism described in the present invention;

[0053] Fig.30 The present invention provides a schematic diagram of the production process of cylindrical battery cells.

[0054] Description of reference numerals:

[0055] 1. Battery cell main conveyor line;

[0056] 2. First production device; 21. First battery cell conveyor line; 22. First loading unit; 23. Negative electrode collector plate feeding unit; 24. Negative electrode insulation sheet feeding unit; 25. Negative electrode collector plate welding unit; 26. First detection unit; 27. Positive electrode encapsulation unit; 28. Battery cell turning unit; 29. ​​Negative electrode insulation sheet pasting unit; 201. Negative electrode encapsulation unit; 202. Battery cell encapsulation unit; 203. First unloading unit; 204, first rejection unit; 251, battery cell transfer tooling; 2511, first connection tray; 25111, first welding part; 25112, first buffer part; 2512, second connection tray; 25121, second welding part; 25122, second buffer part; 252, negative collector plate pressing tooling; 2521, negative collector plate pressure head; 2522, pressing mechanism; 253, negative collector plate feeding tooling; 2 531, first material picking component; 52311, Y-axis slide; 25312, Z-axis slide; 25313, carrier; 25314, first picking component; 2532, negative electrode collector plate positioning component; 2533, negative electrode collector plate material distribution component; 2534, negative electrode collector plate flipping component; 254, negative electrode collector plate welding assembly; 2541, second slide; 2542, progressive slide; 2543, galvanometer welding head ; 2544, distance measuring sensor; 261, first post-weld visual inspection component; 262, short circuit detection component; 291, negative electrode insulating sheet pressing tool; 2911, negative electrode insulating sheet pressing head; 292, negative electrode insulating sheet feeding tool; 2921, second material taking component; 2922, primary positioning component; 2923, negative electrode insulating sheet material dividing component; 2924, negative electrode insulating sheet flipping component; 2925, secondary positioning component;

[0057] 3. Second production device; 31. Second battery cell conveyor line; 32. Shell conveyor line; 321. Shell carrier; 33. Second loading unit; 34. External insulation sheet feeding unit; 35. Nut feeding unit; 36. Battery cell shell unit; 37. External insulation sheet feeding unit; 38. Battery cell screw locking unit; 39. Screw welding unit; 301. Pre-welding visual inspection component; 302. Second post-welding visual inspection component; 303. Second unloading unit; 351. Nut vibration plate; 352. Nut conveying plate; 3521. Nut conveying Groove; 361, shell loading assembly; 362, vertical shell entry assembly; 3621, battery core feeding assembly; 3622, battery core pushing assembly; 3623, shell positioning assembly; 371, outer insulation sheet transfer assembly; 372, guide assembly; 3721, guide bushing; 3722, lifting rod; 381, material distribution assembly; 3811, fixed frame; 3812, first lifting component; 3813, movable frame; 3814, multiple connecting plates; 3815, second lifting component; 3816, positioning column; 382, ​​tightening assembly;

[0058] 4. The third production device; 41. The third battery cell conveyor line; 42. The third loading unit; 43. The positive collector plate feeding unit; 44. The pre-spot welding unit; 45. The full welding unit; 46. The penetration welding unit; 47. The hemming unit; 48. The third detection unit; 49. The third unloading unit; 441. The positive collector plate transfer assembly; 442. The pre-spot welding device; 4411. The handling component; 4412. The positioning component; 4413. The flipping component; 481. The 3D scanning weld device; 482. The post-welding visual inspection device; 483. The short circuit detection device;

[0059] 5. Fourth production device; 51. Fourth battery cell conveyor line; 52. Fourth loading unit; 53. First cleaning unit; 54. Sealing nail loading unit; 55. Sealing nail welding unit; 56. Coding unit; 57. Fourth inspection unit; 58. Fourth unloading unit; 59. Fourth rejection unit; 511. Battery carrier; 571. 2D visual inspection device; 572. 3D visual inspection device;

[0060] 6. The fifth production device; 61. The fifth battery cell conveyor line; 62. The fifth loading unit; 63. The second cleaning unit; 64. The fifth detection unit; 65. The fifth rejection unit; 66. The film sleeve unit; 67. The fifth unloading unit; 631. The end surface cleaning mechanism; 632. The cylindrical surface cleaning mechanism; 661. The material tray; 662. The feeding wheel; 663. The film guide shaft; 6631. The shaft head; 6632. The guide cylinder; 6633. The reset member; 6634. The guide wheel; 6635. The magnetic ring; 664. The cutter; 665. The clamping part; 6651. The fourth driving unit; 6652. The fifth driving unit; 666. The pressing part;

[0061] 7. The sixth production device; 71. The sixth battery cell conveyor line; 72. The sixth loading unit; 73. The code scanning unit; 74. The coding unit; 75. The end face detection unit; 76. The length detection unit; 77. The film detection unit; 78. The diameter detection unit; 79. The weighing unit; 701. The second rejection unit; 702. The sixth unloading unit;

[0062] 8. Flipping mechanism; 81. Cell positioning block; 82. Extrusion block; 83. First drive unit; 84. Second drive unit;

[0063] 9. Moving mechanism; 91. First grabbing component; 92. Second grabbing component. DETAILED DESCRIPTION

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the invention.

[0065] See also Figure 1 The present invention discloses an automatic cylindrical battery assembly line, which is provided with a first production station, a second production station, a third production station, a fourth production station, a fifth production station and a sixth production station in sequence along the battery core processing direction, and the automatic cylindrical battery assembly line comprises:

[0066] The battery cell main conveyor line 1 passes through the first production station, the second production station, the third production station, the fourth production station, the fifth production station and the sixth production station in sequence. The battery cell is located on the battery cell main conveyor line 1 in a vertical posture to convey the semi-finished products of the battery cell;

[0067] The first production device 2 is arranged at the first production station, and is used for welding the negative collector plate of the battery cell; the second production device 3 is arranged at the second production station, and is used for putting the battery cell into the shell, and sequentially feeding the outer insulating sheet to the negative end of the battery cell, locking the nut onto the negative pole of the battery cell, and welding the nut to the negative pole of the battery cell; the third production device 4 is arranged at the third production station, and is used for welding the positive collector plate of the battery cell; the fourth production device 5 is arranged at the fourth production station, and is used for cleaning the liquid injection hole of the battery cell and welding the sealing nail to the liquid injection hole of the battery cell; the fifth production device 6 is arranged at the fifth production station, and is used for cleaning the surface of the battery cell and putting a film on the surface of the battery cell; the sixth production device 7 is arranged at the sixth production station, and is used for detecting the end face, length, diameter and weight of the battery cell. In this scheme, the first production device 2, the second production device 3, the third production device 4, the fourth production device 5, the fifth production device 6 and the sixth production device 7 are arranged in sequence along the main battery cell conveyor line 1. The main battery cell conveyor line 1 connects multiple production devices in series to perform negative electrode collector plate welding, battery cell shelling, external insulation sheet loading, battery cell locking nut, nut and battery cell pole welding, positive electrode collector plate welding, sealing nail welding, battery cell sleeve film and battery cell testing, so as to realize the automated, efficient and precise production of cylindrical batteries, effectively reduce the number of transfers of parts between different production lines and different production workshops, and reduce the probability of defective and waste products caused by transfer.

[0068] The cylindrical battery automatic assembly line provided by this solution is used for processing and testing cylindrical battery cells. According to the process flow, the negative collector plate welding, battery cell shelling, external insulation sheet loading, battery cell locking nut, nut and battery cell pole welding, positive collector plate welding, primary helium inspection, liquid injection after helium inspection, and liquid injection hole sealing nail welding are completed in sequence. Before the welding of the negative collector plate, there are also battery cell disassembly machine and current collector plate disassembly machine. After the sealing welding, there are some other process equipment (such as testing, formation), etc., and then the battery cell is coated and the appearance is inspected. After the appearance inspection, it is a finished battery. Finally, the battery is packaged and collected and packed into boxes.

[0069] like Figures 2 to 11 As shown, the first production device 2 is formed with a negative collector plate welding station, a first inspection station, a positive electrode glue coating station, a negative electrode insulating sheet pasting station, a negative electrode glue coating station and a battery cell glue collection station, and the first production device 2 includes: a first battery cell conveyor line 21, located on one side of the battery cell main conveyor line 1, the first battery cell conveyor line 21 passes through the negative collector plate welding station, the first inspection station, the positive electrode glue coating station, the negative electrode insulating sheet pasting station, the negative electrode glue coating station and the battery cell glue collection station in sequence, for conveying the battery cell; A loading unit 22 includes a first flip loading component, which is used to flip the vertical battery cells on the main battery cell conveyor line 1 into a horizontal position, and arrange them longitudinally on the first battery cell conveyor line 21; a negative electrode collector plate feeding unit 23 is a negative electrode collector plate feeding conveyor line, which is located on one side of the first battery cell conveyor line 21, and is used to transport the negative electrode collector plate to the negative electrode collector plate welding station; preferably, the negative electrode collector plate feeding conveyor line is arranged on the lower side of the main battery cell conveyor line 1 close to the first battery cell conveyor line 21 to improve space utilization.

[0070] The battery cell conveyor line and feeding and conveying structure used in the present application can have many forms, such as a belt conveyor line or a magnetic levitation conveyor line. The specific structure is not limited in the embodiments of the present application. Preferably, the present application uses a magnetic levitation conveyor line, which has the advantages of fast and precise positioning. The negative insulating sheet feeding unit 24 is used to convey the negative insulating sheet to the negative insulating sheet pasting station. Specifically, the negative insulating sheet feeding unit 24 can adopt a negative insulating sheet cutting device, which includes an insulating sheet unwinding module, an insulating sheet The blanking mechanism, the insulating sheet loading and transferring mechanism, the insulating sheet storage bin, the insulating sheet unloading and transferring mechanism, the insulating sheet unwinding module is used to unwind the insulating sheet raw material, the insulating sheet blanking mechanism is used to punch the insulating sheet raw material to obtain the insulating sheet, the insulating sheet loading and transferring mechanism is used to transfer the insulating sheet obtained by punching to the insulating sheet storage bin, and the insulating sheet unloading and transferring mechanism is used to transfer the insulating sheet placed in the insulating sheet storage bin to the negative electrode collector plate welding station; in addition, the negative electrode insulating sheet feeding unit 24 can also be a negative electrode insulating sheet feeding and conveying line to convey the negative electrode insulating sheet to the negative electrode insulating sheet pasting station;

[0071] The negative collector plate welding unit 25 is provided at the negative collector plate welding station, and includes a cell transport tool 251, a negative collector plate pressing tool 252, a negative collector plate feeding tool 253, and a negative collector plate welding assembly 254; the cell transport tool 251 can switch between the first cell conveying line 21 and the negative collector plate pressing tool 252 to transport the cell to be welded to the corresponding negative collector plate pressing tool 25 2, and transport the battery cell welded at the negative collector plate pressing tool 252 back to the first battery cell conveyor line 21; the negative collector plate pressing tool 252 is used to place the negative collector plate and press the negative collector plate to the end of the battery cell; the negative collector plate feeding tool 253 is used to provide the negative collector plate to the negative collector plate pressing tool 252; the negative collector plate welding assembly 254 is used to weld the negative collector plate pressed on the end of the battery cell;

[0072] The first detection unit 26 is arranged at the first detection station, and is used for performing visual inspection and short-circuit detection on the ends of the battery cells that have completed the welding of the negative electrode collector plate; specifically, the first detection unit 26 includes a first post-weld visual inspection component 261 and a short-circuit detection component 262, and the first post-weld visual inspection component 261 and the short-circuit detection component 262 are arranged in sequence along the conveying direction of the first battery cell conveyor line 21, the first post-weld visual inspection component 261 is used for performing post-weld visual inspection on the battery cells that have completed the welding of the negative electrode collector plate, and the short-circuit detection component 262 is used for performing short-circuit detection on the battery cells that have completed the welding of the negative electrode collector plate, so as to identify the battery cells with unqualified quality; the first production device 2 also includes a first rejection unit 204, which is used to cooperate with the first detection unit 26 to process the battery cells with unqualified quality offline through the first rejection unit 204.

[0073] The positive electrode encapsulation unit 27 includes a positive electrode encapsulation component, which is arranged at the positive electrode encapsulation station and is located on one side of the first battery cell conveyor line 21, and is used to encapsulate the battery cell moved directly below it with a positive electrode; the battery cell turning unit 28 includes a battery cell turning robot, which is arranged at the positive electrode encapsulation station and is used to turn the battery cell that has completed the positive electrode encapsulation. In this embodiment, the battery cell turning unit 28 can also be other mechanical structures that can realize the turning of the battery cell, such as a rotary cylinder equipped with pneumatic clamps, etc., which is not specifically limited in this embodiment; the negative electrode insulating sheet pasting unit 29 is arranged at the negative electrode insulating sheet pasting station, and includes a negative electrode insulating sheet pressing tool 291 and a negative electrode insulating sheet feeding tool 292; the negative electrode insulating sheet pressing tool 291 Used to pick up the negative electrode insulating sheet and press the negative electrode insulating sheet to the negative end of the battery cell; the negative electrode insulating sheet feeding tool 292 is used to provide the negative electrode insulating sheet to the negative electrode insulating sheet pressing tool 291; the negative electrode glue coating unit 201, including a negative electrode glue coating component, is arranged at the negative electrode glue coating station and is located on one side of the first battery cell conveying line 21, and is used to perform negative electrode glue coating on the battery cell moved directly below it; the battery cell glue collecting unit 202 is arranged at the battery cell glue collecting station, and is used to perform glue collection on the end of the battery cell after glue coating; in this embodiment, the battery cell glue collecting unit 202 includes a glue collection component and a glue collection reference component, the glue collection component is used to perform glue collection on the end of the battery cell, and the glue collection reference component is used to reference the battery cell when the battery cell is glued.

[0074] The first unloading unit 203 includes a first turning unloading component, which is used to turn the horizontal battery cells on the first battery cell conveying line 21 into a vertical posture and place them on the battery cell main conveying line 1.

[0075] The battery transfer tool 251 includes a first connecting plate 2511 and a second connecting plate 2512 connected to the first battery conveying line 21; the first connecting plate 2511 is provided with a first welding portion 25111 and a first buffer portion 25112, and the first welding portion 25111 and the first buffer portion 25112 are alternately connected to the first battery conveying line 21; the second connecting plate 2512 is provided with a second welding portion 25121 and a second buffer portion 25122, and the second welding portion 25121 and the second buffer portion 25122 are alternately connected to the first battery conveying line 21 is connected; the first welding part 25111 and the second buffer part 25122 are connected to the first battery cell conveying line 21 at the same time, and the first welding part 25111 and the second buffer part 25122 are connected to each other; the first buffer part 25112 and the second welding part 25121 are connected to the first battery cell conveying line 21 at the same time, and the first buffer part 25112 and the second welding part 25121 are connected to each other; the negative electrode current collecting disc pressing tool 252 is used to press the negative electrode current collecting disc to the end of the battery cell in the first welding part 25111 and the second welding part 25121 in a non-connected state.

[0076] During the welding operation, in the first beat, after the first welding part 25111 receives the battery cell on the first battery cell conveying line 21, it moves toward the negative collector plate welding assembly 254, and during this process, the first buffer part 25112 is connected to the first battery cell conveying line 21 to receive the subsequent battery cell, and at the same time, the second welding part 25121 is connected to the first battery cell conveying line 21 and the first buffer part 25112, and the unwelded battery cell inside the first buffer part 25112 is transferred to the second welding part 25121;

[0077] In the second beat, after the first welding part 25111 is welded, it is reconnected to the first battery cell conveying line 21. In this step, the second welding part 25121 is synchronously transferred toward the negative collector plate welding assembly 254 for welding, and the second buffer part 25122 is connected to the first battery cell conveying line 21 and the first welding part 25111 to receive the already welded battery cells inside it and convey them to the subsequent process in the subsequent cycle step. The first beat and the second beat are operated alternately to perform the welding process of the continuous collector plate.

[0078] It should also be noted that the first buffer section 25112 is only used to carry the incoming battery cells on the first battery cell conveying line 21 , while the second buffer section 25122 is only used to carry the battery cells that have been welded inside the first welding section 25111 .

[0079] The negative current collecting disc feeding tool 253 includes a first material taking component 2531, a negative current collecting disc positioning component 2532, a negative current collecting disc material dividing component 2533 and a negative current collecting disc flipping component 2534, and also includes the following steps before the negative current collecting disc is welded: s100, the first material taking component 2531 picks up the negative current collecting disc delivered by the negative current collecting disc feeding unit 23; s200, the first material taking component 2531 transfers the negative current collecting disc to the negative current collecting disc positioning component 2532, and the negative current collecting disc positioning component 2532 is used to adjust the position of the current collecting disc ; s300, the negative current collecting disc dividing component 2533 picks up the negative current collecting disc in the negative current collecting disc positioning component 2532, and transfers it to the negative current collecting disc flipping component 2534 at the corresponding battery cell; s400, the negative current collecting disc flipping component 2534 adjusts the posture of the current collecting disc, and adjusts the position of the negative current collecting disc to correspond to the negative current collecting disc pressing tooling 252; s500, the negative current collecting disc pressing tooling 252 picks up the adjusted current collecting disc, and clamps the negative current collecting disc on the negative current collecting disc pressing tooling 252, waiting for the negative current collecting disc welding assembly 254 to be welded.

[0080] It should be noted that if Figure 4As shown, in order to save working space, the negative collector disc feeding conveyor line is arranged perpendicular to the first battery cell conveyor line 21, and the corresponding positions of the first connecting plate 2511 and the second connecting plate 2512 are provided with a negative collector disc flipping component 2534 and a negative collector disc pressing tooling 252. Only one place is shown in the figure to facilitate the display of the negative collector disc welding assembly 254; in the above steps, the negative collector disc moves at a uniform speed on the negative collector disc feeding conveyor line, and is grabbed and transferred by the first material picking component 2531. After being positioned by the negative collector disc positioning component 2532, the negative collector disc material dividing component 2533 grabs the material and alternately transfers it to the corresponding negative collector disc flipping component 2534. After adjusting the posture of the collector disc, it is used for subsequent welding.

[0081] In step s100, the first material picking component 2531 further includes a Y-axis slide 52311, a Z-axis slide 25312, a carrier 25313 and a first picking component 25314; step s100 further includes the following steps:

[0082] s101, the Y-axis slide 52311 drives the Z-axis slide 25312 and the supporting platform 25313 and the first material picking component 2531 arranged thereon to move between the negative current collector disc feeding conveyor line and the negative current collector disc positioning component 2532; s102, the Z-axis slide 25312 drives the supporting platform 25313 to descend above the negative current collector disc feeding conveyor line; s103, the first material picking component 2531 picks up several negative current collector discs from the negative current collector disc feeding conveyor line and places them in the negative current collector disc positioning component 2532.

[0083] It should be added that the first material picking component 2531 is a negative pressure suction grabbing structure, which can be a suction cup. A plurality of first material picking components 2531 are arranged on the supporting platform 25313, as well as an air path conversion device and a pressure monitoring device connected to each first material picking component 2531, so as to ensure that each first material picking component 2531 can grab the collecting plate with the same adsorption force.

[0084] like Figure 3 As shown, in step s200, the negative current collecting disc positioning component 2532 is used to carry the negative current collecting disc and serve as a transit for the negative current collecting disc dividing component 2533 to pick up. The first picking component 2531 and the negative current collecting disc dividing component 2533 alternately transfer the negative current collecting disc on the negative current collecting disc positioning component 2532. In the above, the negative current collecting disc positioning component 2532 is provided with a first placement hole corresponding to the first picking component 25314, and the first placement hole is used to carry the negative current collecting disc. A positioning pin is provided in the first placement hole, and the positioning pin corresponds to the center hole of the negative current collecting disc, so that in the process of placing the negative current collecting disc, the positioning pin can calibrate the position of each negative current collecting disc.

[0085] The negative electrode current collecting disc distributing component 2533 includes an electric slide and a sliding seat slidably arranged thereon, and a second picking member is provided on the sliding seat. S300 also includes the following steps: S301, the sliding seat is alternately transferred between the negative electrode current collecting disc positioning component 2532 and the negative electrode current collecting disc flipping component 2534 along the electric slide; S302, the second picking member picks up the negative electrode current collecting disc in the negative electrode current collecting disc positioning component 2532; S303, the second picking member places the negative electrode current collecting disc in the negative electrode current collecting disc flipping component 2534.

[0086] It should be noted that the second picking member is also a negative pressure suction grabbing structure. After the negative current collecting disc positioning member 2532 grabs the negative current collecting disc, the negative current collecting disc dividing member 2533 is alternately transferred to the first connecting disc 2511 and the second connecting disc 2512 .

[0087] In another preferred embodiment, Figure 7 As shown, the step s400 also includes the following steps: s401, the negative current collecting disc flipping component 2534 receives the negative current collecting disc in the second picking component; s402, the negative current collecting disc flipping component 2534 synchronizes the transfer process of the negative current collecting disc dividing component 2533, drives the negative current collecting disc to flip, and adjusts the posture of the negative current collecting disc to correspond to the battery cell; s403, the negative current collecting disc flipping component 2534 transfers the negative current collecting disc into the negative current collecting disc pressing tooling 252.

[0088] It should be supplemented that the negative current collecting disc flipping component 2534 includes multiple flipping tables and a first driving component for driving the flipping tables to rotate; a transmission rotating rod is provided at the output end of the first driving component; a third picking member is provided at one end of the flipping table, and the other end of the flipping table is fixedly provided on the transmission rotating rod, so as to drive multiple flipping tables to rotate synchronously under the drive of the first driving component; a positioning block corresponding to the negative current collecting disc is provided on the third picking member, and a suction cup cylinder acting on the negative current collecting disc is provided in the positioning block; a second driving component for driving the flipping table to extend is provided on the flipping table, and the second driving component is used to drive the flipping table to extend to the corresponding position of the negative current collecting disc pressing tooling 252.

[0089] The negative electrode current collecting disc flipping component 2534 is in a horizontal posture, and is used to receive the negative electrode current collecting disc transferred from the negative electrode current collecting disc distributing component 2533. After receiving the negative electrode current collecting disc, the negative electrode current collecting disc flipping component 2534 rotates 90 degrees, and switches the negative electrode current collecting disc to a vertical state corresponding to the negative electrode current collecting disc pressing tooling 252 and the battery cell; and then Figure 7 As shown, the second driving assembly drives the turning table to extend to the corresponding position of the negative electrode current collecting disc pressing tooling 252, and pushes the negative electrode current collecting disc into the negative electrode current collecting disc pressing tooling 252 through the suction cup cylinder.

[0090] In the present application, it is also necessary to add that the related structures of the negative electrode current collecting plate pressing tool 252, such as Figure 7 As shown, the negative electrode current collecting disc pressing tool 252 is arranged below the negative electrode current collecting disc flipping component 2534 and is arranged opposite to the battery cell in the welding part;

[0091] The negative electrode current collecting disc pressing tool 252 includes a negative electrode current collecting disc pressing head 2521 and a material sensor and a locking piece arranged on the side of the negative electrode current collecting disc pressing head 2521; the material sensor is used to detect whether there is a current collecting disc inside the negative electrode current collecting disc pressing head 2521, and if there is, the next step of laser welding is carried out; the output end of the locking piece is provided with a locking rod that abuts the current collecting disc, and the locking rod is used to abut the current collecting disc for locking; the side of the negative electrode current collecting disc pressing head 2521 is also provided with a gas supply assembly for introducing protective gas during the welding process.

[0092] In this application, if Fig. 9 As shown, the negative collector plate welding assembly 254 includes a second slide 2541, a progressive slide 2542, a galvanometer welding head 2543 and a distance sensor 2544; the negative collector plate welding assembly 254 adopts the following welding steps: s501, the negative collector plate welding assembly 254 alternately switches along the second slide 2541 on one side of the first docking plate 2511 and the second docking plate 2512; s502, after the negative collector plate welding assembly 254 moves to the corresponding docking plate, the distance sensor 2544 automatically calculates the focal length by measuring the distance to the focal length docking plate, and then adjusts the distance of the laser welding focal length by moving the progressive slide 2542. s503, N galvanometer welding heads 2543 weld the N current collecting plates corresponding to them, and weld the M current collecting plates adjacent to the target current collecting plates by deflecting the galvanometer welding heads 2543; s504, the negative current collecting plate welding assembly 254 moves a distance of M+1 current collecting plate widths along the current collecting plate layout direction, and welds again until all the current collecting plates in the docking plate are welded.

[0093] Specifically, three groups of galvanometer welding heads 2543 are arranged on the negative current collecting plate welding assembly 254. Through the deflection of the galvanometer welding head 2543, each galvanometer welding head 2543 completes the welding of two current collecting plates (that is, the adjacent current collecting plates are M, M=1), and then, the overall negative current collecting plate welding assembly 254 moves the positions of the two current collecting plates, and welds the other two groups of current collecting plates again, thereby achieving the purpose of welding the current collecting plates and battery cells. It should be supplemented that the spacing between each galvanometer welding head 2543 is the same as the range of its action. For example, the galvanometer welding head 2543 can weld three current collecting plates at the same time, and the spacing between each galvanometer welding head 2543 is the distance of the unit length of three current collecting plates.

[0094] It should be added that, in the process of transferring the battery cell carried in the welding part toward the negative electrode current collecting plate welding assembly 254 in step s501 , the welding part pushes the battery cell and fixes it on the negative electrode current collecting plate pressing tool 252 .

[0095] In the above steps, if Figure 4 , Figure 8 As shown, the first connecting plate 2511 and the second connecting plate 2512 are both provided with a pressing mechanism 2522 corresponding to the negative electrode current collecting plate pressing tool 252;

[0096] The clamping mechanism 2522 includes a push head, a pressure sensor disposed on the push head, and a third driving component for driving the push head to move; a cylinder connecting plate for supporting the push head and the pressure sensor is disposed on the output end of the third driving component.

[0097] The clamping mechanism 2522 also includes a cell bracket for carrying the cell, and a cell clamping member for clamping the cell is arranged in the cell bracket; a push plate is also arranged on the output end of the third drive component, and a cam mechanism which is transmission-connected to the cell clamping member is arranged on the side of the cell bracket opposite to the push plate; when the third drive component is running, the push plate at its output end first contacts the cam mechanism to open the cell clamping member which is transmission-connected to the cam mechanism, so that the cell is movable inside the cell bracket; secondly, the third drive component continues to run, and the push head on the cylinder connecting plate at its output end contacts the cell, pushing the cell to move along the cell bracket toward the negative collector plate pressing tooling 252 until the pressure sensor detects that the cell reaches a predetermined pressure.

[0098] During the transfer of the welding parts of the first connecting plate 2511 and the second connecting plate 2512 to the negative collector plate welding assembly 254 , the pressing mechanism 2522 operates synchronously to release the clamping of the battery cell and push the battery cell to be pressed onto the negative collector plate pressing tool 252 .

[0099] It is easy to imagine that when the first docking tray 2511 and the second docking tray 2512 are switched perpendicularly to the first battery cell conveying line 21, an electric slide should be provided to drive the first docking tray 2511 and the second docking tray 2512 to switch. When the electric slide switches, the first battery cell conveying line 21 stops running.

[0100] In this solution, the positive electrode rubber-coated component and the negative electrode rubber-coated component have the same structure, both of which include a rubber-coated component, a battery cell rotation drive component and a centering and positioning component;

[0101] The rubber coating assembly includes a rubber coating base, an unwinding element, a tension adjusting element, a drawstring element and a shearing element; the unwinding element is arranged on the rubber coating base, and is used to install a tape roll for rubber coating and unwind the tape roll; the tension adjusting element is arranged on the rubber coating base, and is used to adjust the tension of the unwinding tape on the tape roll, and is used to guide the tension-adjusted tape to the drawstring element; the drawstring element is used to pull the tape out to a specified length and position the tape; the shearing element is arranged on the rubber coating base, and is used to shear the tape pulled out by the drawstring element; when rubber coating the battery cell, the tape roll is stably unwound by the unwinding element, and the unwinding tape on the tape roll is stably transported to the drawstring element after being tensioned by the tension adjusting element, and the drawstring element holds the tape in place and positions the tape so that the shearing element can shear the tensioned tape;

[0102] The battery cell rotating assembly is used to apply a flexible pressing force to the back of the tape, ensuring that the adhesive surface of the tape is reliably attached to the surface of the battery cell without damaging the tape and the battery cell, and driving the battery cell to rotate, so as to better complete the rubber coating operation on the end of the battery cell. Specifically, the battery cell rotating assembly includes a rotating drive unit and a roller connected to the rotating drive unit, and the roller contacts the cylindrical surface of the battery cell, applies pressure to the tape and drives the battery cell to rotate; wherein the rotating drive unit is a motor.

[0103] The centering positioning component is arranged corresponding to the rubber-coating component, and is used to lift the battery cell to be rubber-coated that is moved to the bottom of the corresponding rubber-coating component from the first battery cell conveyor line 21, and adjust the relative position of the battery cell to the corresponding rubber-coating component by pushing the end of the battery cell, while making the battery cell contact with the battery cell rotating component; and after the battery cell is rubber-coated, the battery cell is returned to the original position of the first battery cell conveyor line 21; wherein, the centering positioning component lifts the two ends of the battery cell by two roller groups, and the roller group includes two rollers, and the end of the battery cell is located between the two rollers in the corresponding roller group; at the same time, when the centering positioning component limits the battery cell, it contacts the part of the battery cell end through the turntable.

[0104] In this scheme, the negative electrode insulating sheet pasting station and the negative electrode glue coating station are both set at the same position relative to the first battery cell conveying line 21. First, the battery cell is located on the centering positioning component in the negative electrode glue coating unit 201. The negative electrode insulating sheet pasting unit 29 pastes the negative electrode insulating sheet on the battery cell located on the negative electrode glue coating unit 201. The negative electrode glue coating unit 201 starts working again to glue the negative electrode of the battery cell.

[0105] The negative electrode insulating sheet pressing tool 291 includes a negative electrode insulating sheet pressing head 2911 arranged at the end of the corresponding battery cell. The negative electrode insulating sheet pressing head 2911 is used to place the negative electrode insulating sheet parallel to the end of the battery cell. A pushing component can be provided to push the negative electrode insulating sheet pressing head 2911 to move toward and away from the battery cell, so that the battery cell is pressed with the negative electrode insulating sheet on the negative electrode insulating sheet pressing head 2911. The pushing component can be a telescopic cylinder.

[0106] The negative electrode insulating sheet feeding tool 292 includes a second material taking component 2921, a primary positioning component 2922, a negative electrode insulating sheet dividing component 2923, a secondary positioning component 2925 and a negative electrode insulating sheet flipping component 2924; the second material taking component 2921 is used to pick up the negative electrode insulating sheet on the negative electrode insulating sheet feeding unit 24 and move it laterally to the primary positioning component 2922; preferably, the second material taking component 2921 can be a material taking robot that can pick up multiple negative electrode insulating sheets at a time; the primary positioning component 2922 is used to receive the laterally placed negative electrode insulating sheet and perform a primary positioning on the negative electrode insulating sheet; in this embodiment, the primary positioning component 2922 is provided with a second placement hole corresponding to the second material taking component 2921, and the second placement hole is used to carry the negative electrode insulating sheet and position the negative electrode insulating sheet;

[0107] The negative electrode insulating sheet distributing component 2923 is used to pick up the negative electrode insulating sheet in the primary positioning component 2922 and transfer it horizontally to the secondary positioning component 2925; in this embodiment, the negative electrode insulating sheet distributing component 2923 includes a third slide that spans the primary positioning component 2922 and the secondary positioning component 2925 and a negative electrode insulating sheet sucker assembly, and the third slide drives the negative electrode insulating sheet sucker assembly to transfer the negative electrode insulating sheet on the primary positioning component 2922 to the corresponding secondary positioning component 2925; wherein the primary positioning component 2922 and the secondary positioning component 2925 can be provided in plurality, distributed on both sides of the third slide;

[0108] The secondary positioning component 2925 is used to receive the negative electrode insulating sheet placed horizontally and perform secondary positioning on the negative electrode insulating sheet; in this embodiment, the secondary positioning component 2925 includes a positioning support platform, and a limiting groove is provided on the top of the positioning support platform, and the negative electrode insulating sheet is placed in the limiting groove for limiting;

[0109] The negative insulating sheet flipping component 2924 is arranged at the corresponding negative insulating sheet pressing tool 291, and is used to pick up the negative insulating sheet in the secondary positioning component 2925, and flip the negative insulating sheet to a vertical posture, driving the negative insulating sheet in the vertical posture to move, so that the position of the negative insulating sheet corresponds to the negative insulating sheet pressing tool 291. In this embodiment, the negative electrode insulating sheet flipping component 2924 includes a second flipping power component and a second flipping table connected to the second flipping power component. The second flipping power component is used to drive the second flipping table to flip 90° up and down. The second flipping table is also provided with corresponding grasping elements and lifting elements. The grasping elements are used to receive the negative electrode insulating sheet in a horizontal posture and limit the negative electrode insulating sheet, and drive the negative electrode insulating sheet to flip to a vertical posture. The lifting element is used to drive the grasping element to move up and down after the negative electrode insulating sheet is flipped to a vertical posture, so that the negative electrode collecting plate corresponds to the negative electrode insulating sheet pressure head 2911; the above-mentioned flipping components can also be directly replaced by a multi-axis industrial robot. The difference is that the cost of this application is lower.

[0110] like Figures 12 to 19As shown, the second production device 3 is formed with a battery cell shelling station, an outer insulating sheet loading station, a battery cell screw locking station, a battery cell screw welding station and a second inspection station. The second production device 3 includes: a second battery cell conveyor line 31, located on one side of the battery cell main conveyor line 1, and the second battery cell conveyor line 31 passes through the battery cell shelling station, the outer insulating sheet loading station, the battery cell screw locking station, the battery cell screw welding station and the second inspection station in sequence to convey the battery cell; a shell conveyor line 32, located on the second battery cell conveyor line 3 1, for conveying the shell of the battery cell to the battery cell shelling station; specifically, the shell on the shell conveying line 32 is in a vertical posture with the opening downward, and the shell is conveyed to the battery cell shelling station in this posture; the shell carrier 321 is arranged on the second battery cell conveying line 31, for carrying and clamping the shell of the battery cell, and moves with the second battery cell conveying line 31; in this embodiment, the shell carrier 321 has a clearance hole at the bottom of each shell corresponding to each shell for the corresponding battery cell to enter the shell; the second loading unit 33 includes a first A vertical loading component is used to transfer the vertical battery cells on the battery cell main conveyor line 1 to the battery cell shelling station in a vertical posture; the outer insulating sheet feeding unit 34 is the outer insulating sheet feeding conveyor line, which is located on one side of the second battery cell conveyor line 31 and is used to convey the outer insulating sheet to the outer insulating sheet loading station; the nut feeding unit 35 is used to supply nuts to the battery cell screw locking station; specifically, the nut feeding unit 35 includes a stand and a nut vibrating plate 351 and a nut conveying plate 352 arranged on the stand, and the nut conveying plate 352 is used to convey the nut to the outer insulating sheet feeding station. The plate 352 is butted with the discharge end of the nut vibration disk 351. The nut vibration disk 351 is provided with a plurality of discharge ports for outputting nuts. The nut conveying plate 352 is provided with a plurality of nut conveying grooves 3521. Each nut conveying groove 3521 corresponds to each discharge port one by one and is interconnected. A large number of nuts placed in the nut vibration disk 351 enter into different nut conveying grooves 3521 on the nut conveying plate 352 under the high-frequency vibration of the nut vibration disk 351, and the nuts are conveyed to the battery core screw locking station;

[0111] The battery cell shelling unit 36 ​​is arranged at the battery cell shelling station, and includes a shell loading assembly 361 and a vertical shell loading assembly 362 arranged in sequence along the conveying direction of the second battery cell conveying line 31; the shell loading assembly 361 is arranged between the second battery cell conveying line 31 and the shell conveying line 32 for clamping the shell on the shell conveying line 32, and conveying the shell to the shell carrier 321 with the opening facing downward, and the second battery cell conveying line 31 drives the shell carrier 321 equipped with the shell to move to the vertical shell loading assembly 362; the vertical shell loading assembly 362 is located below the second loading unit 33, and is used to receive the vertical battery cell on the second loading unit 33 and move the battery cell in a vertical posture to the bottom of the shell carrier 321, and push the battery cell upward into the shell; in this embodiment, the vertical shell loading assembly 362 includes a shell positioning component 3623, a battery cell feeding component 3621 and a battery cell pushing component 3622;

[0112] The shell positioning component 3623 is used to clamp and position the top of the shell in the shell carrier 321, and includes a pressing and clamping element and a first lifting element. The pressing and clamping element is arranged at the execution end of the first lifting element. The pressing and clamping element includes a mounting block connected to the first lifting element and a first clamping member and a pressing member arranged on the mounting block. The first clamping member is used to clamp the top of the shell in the shell carrier 321 to keep the shell in a vertical posture. The pressing member presses on the top of the shell from top to bottom to prevent the shell from moving up during the process of inserting the battery cell into the shell. The first lifting element and the pressing member can use a telescopic cylinder as the power for moving up and down.

[0113] The cell feeding component 3621 includes a cell positioning carrier and a servo slide that drives the cell positioning carrier to move. After receiving the cell transported by the second loading unit 33, the cell positioning carrier is driven by the servo slide to move to the bottom of the shell carrier 321 and the top of the cell pushing component 3622. The cell pushing component 3622 pushes the cell from bottom to top into the shell to complete the vertical entry of the cell into the shell. The cell pushing component 3622 includes a push rod and a pushing member connected to the push rod. The push rod corresponds to the cell in the cell positioning carrier one by one. The bottom of the cell positioning carrier has a clearance hole for the push rod to pass through; the pushing member can be a vertically arranged lifting cylinder or a vertically movable module.

[0114] When the battery cells are put into the shells, in the first beat, the battery cell feeding component 3621 transfers toward the shell carrier 321 after receiving the battery cells from the second loading unit 33. During this process, the second loading unit 33 transfers toward the battery cell main conveyor line 1 to pick up the battery cells on the battery cell main conveyor line 1. In the second beat, the battery cell feeding component 3621 drives the battery cells to move to the bottom of the shell carrier 321 and the top of the battery cell pushing component 3622. The battery cell pushing component 3622 starts to work. During this process, the shell positioning component clamps and positions the shell. The shell in the carrier 321; in the third beat, the battery cell pushing component 3622 and the shell positioning component are reset, and the battery cell feeding component 3621 moves toward the second loading unit 33. At the same time, the second loading unit 33 picks up the battery cell on the battery cell main conveyor line 1 and moves it toward the battery cell feeding component 3621. The second battery cell conveyor line 31 drives the shell carrier 321 with the shelled battery cell to be conveyed to the subsequent process, and moves the shell carrier 321 to which the battery cell to be shelled is moved; the above-mentioned first beat to the third beat are repeated to carry out continuous battery cell shelling.

[0115] The external insulating sheet loading unit is arranged at the external insulating sheet loading station, and includes an external insulating sheet transfer assembly and a guide assembly. The external insulating sheet transfer assembly is used to absorb the external insulating sheet from the external insulating sheet feeding unit 34, and transfer the external insulating sheet to just above the guide assembly, and drive the external insulating sheet to move downward; the shell carrier 321 carries the battery cell with the shell into the guide assembly, and makes the negative end of the battery cell be located just below the external insulating sheet transfer assembly; the guide assembly is used to guide the downwardly moving external insulating sheet and press the battery cell from bottom to top, so that the external insulating sheet is loaded to the negative end of the battery cell. Specifically, the outer insulating sheet transfer mechanism includes a horizontal slide, a vertical slide and an outer insulating sheet suction cup assembly. The vertical slide is connected to the execution end of the horizontal slide. The horizontal slide drives the vertical slide to move back and forth between the insulating sheet feeding unit 34 and the second battery cell conveying line 31. The outer insulating sheet suction cup assembly is installed at the execution end of the vertical slide. The vertical slide drives the outer insulating sheet suction cup assembly to move up and down. The outer insulating sheet suction cup assembly is used to absorb and release the outer insulating sheet. When the outer insulating sheet suction cup assembly absorbs multiple outer insulating sheets at one time, The arrangement direction of the multiple outer insulating sheets is parallel to the conveying direction of the second battery cell conveying line 31, and the moving direction of the horizontal slide is perpendicular to the conveying direction of the second battery cell conveying line 31; the guide assembly includes multiple guide bushings on the top and multiple lifting rods 3722 on the bottom, and the shell carrier 321 is between the guide bushings and the lifting rods 3722. When the suction cup assembly feeds the insulating sheet to the negative end of the battery cell, the suction cup of the suction cup assembly is vertically guided by the guide bushing, and the battery cell is pressed against the battery cell directly below by the lifting rod 3722;

[0116] The battery cell screw locking unit 38 is arranged at the battery cell screw locking station, and is used to pick up a plurality of nuts and tighten the nuts onto a plurality of battery cells to be processed; the battery cell screw locking unit 38 includes a material dividing component 381 and a tightening component 382, ​​the material dividing component 381 includes a fixed frame 3811, a first lifting element 3812, a movable frame 3813, a plurality of connecting plates 3814, a second lifting component 3815 and a positioning column 3816, wherein the fixed frame 3811 is located at the bottom of the nut conveying plate 352, and the first lifting element 3812 is installed on the fixed frame 381 1 is far away from the nut vibration plate 351, the execution end of the first lifting element 3812 is connected to the movable frame 3813, so that the movable frame 3813 is driven by the first lifting element 3812 to move up and down, and the movable frame 3813 includes a support plate and a mounting plate, one end of the support plate is connected to the execution end of the first lifting element 3812, and the other end is connected to the mounting plate, and multiple connecting plates 3814 are installed on the top of the mounting plate of the movable frame 3813, and the connecting plate is provided with a receiving groove corresponding to the nut conveying groove 3521 on the side close to the nut conveying groove 3521. When the execution end of the descending element 3812 is at the minimum extension length, the receiving groove of the connecting plate is connected with the nut conveying groove 3521, receiving a single nut output by the nut conveying groove 3521, and positioning the nut. The second lifting component 3815 is arranged at the bottom of the mounting plate of the movable frame 3813, and the execution end of the second lifting component 3815 is inserted into the connecting plate. Before sucking the nut, the execution end of the second lifting component 3815 is extended to push the nut in the connecting plate upward, so that the nut leaves the receiving groove for easy suction. The tightening assembly 382 includes a plurality of tightening guns, A bottom plate, a horizontal electric slide, a bracket, a vertical electric slide and a battery cell clamping plate, wherein the bracket is mounted on the execution end of the horizontal electric slide, the vertical electric slide is mounted on the bracket, the bottom plate is mounted on the execution end of the vertical electric slide, and a plurality of tightening guns are mounted on the bottom plate. The horizontal electric slide is used to drive the tightening gun to move between the nut conveying plate 352 and the battery cell clamp, and the vertical electric slide is used to drive the tightening gun to move downward to absorb the nuts on the connecting plate, and to drive the tightening gun to move downward close to the battery cell to be processed, and then the tightening gun works to tighten the nut on the corresponding battery cell;

[0117] The screw welding unit 39 is a laser welding component, which is arranged at the battery cell screw welding station and is used to weld the screw to the negative electrode of the battery cell; the second detection unit is arranged at the second detection station and is used to detect the locking effect of the screw and the negative electrode of the battery cell before the screw is welded, and to detect the welding effect of the screw and the negative electrode of the battery cell after the screw is welded; specifically, it includes a pre-welding visual detection component 301 and a second post-welding visual detection component 302, and the pre-welding visual detection component 301 and the second post-welding visual detection component 302 are sequentially arranged along the conveying direction of the second battery cell conveyor line 31, the pre-welding visual detection component 301 is used to detect the locking effect of the screw and the negative electrode of the battery cell, and the second post-welding visual detection component 302 is used to detect the welding effect of the screw and the negative electrode of the battery cell that has been welded; the second production device 3 also includes a second rejection unit 701, which is used to cooperate with the second detection unit to process the battery cells with unqualified quality offline through the second rejection unit 701;

[0118] The second unloading unit 303 includes a first vertical unloading component, which is used to transfer the vertical battery cells on the second battery cell conveying line 31 to the battery cell main conveying line 1 in a vertical posture.

[0119] Among them, the first vertical loading component, the first vertical unloading component and the shell loading assembly 361 all include a lateral moving module, a vertical moving module and a clamp, the lateral moving module is used to drive the clamp to move horizontally, the vertical moving module is used to drive the clamp to move vertically, and the clamp is used to clamp the corresponding battery cell and the shell; specifically, the vertical moving module is arranged at the execution end of the lateral moving module, and the clamp is arranged at the execution end of the vertical moving module. For example, when the lateral moving module is a lateral electric slide, the vertical moving module is connected to the slide in the electric slide, and when the lateral moving module is a telescopic cylinder, the clamp is arranged on the telescopic rod of the telescopic cylinder; since the specific structures of the lateral moving module, the vertical moving module and the clamp are common knowledge of technicians in this field, they will not be described in detail here. Of course, the industrial clamp robot in the prior art can also be directly used to achieve the above purpose.

[0120] like Figure 20 to Figure 22As shown, the third production device 4 is formed with a pre-spot welding station, a full welding station, a penetration welding station, a rolling station and a third inspection station, and the third production device 4 includes: a third battery cell conveyor line 41, located on one side of the battery cell main conveyor line 1, and the third battery cell conveyor line 41 passes through the pre-spot welding station, the full welding station, the penetration welding station, the rolling station and the third inspection station in sequence to convey the battery cells; a third loading unit 42, including a second flip loading component, used to flip the vertical battery cells on the battery cell main conveyor line 1 into a horizontal position, and convey them to the second battery cell conveyor line 31 in a longitudinal arrangement posture; a positive collector disc feeding unit 43, which is a positive collector disc feeding and conveying line, located on one side of the third battery cell conveyor line 41, and used to convey the positive collector disc to the pre-spot welding station;

[0121] The pre-spot welding unit 44 is provided at the pre-spot welding station, and includes a positive current collector disc transport assembly 441, a positive current collector disc pressing tool, and a pre-spot welding device 442. The positive current collector disc transport assembly 441 is used to transfer the positive current collector disc to the pressure head of the positive current collector disc pressing tool; the positive current collector disc pressing tool is used to place the positive current collector disc and press the positive current collector disc to the end of the battery cell;

[0122] The pre-spot welding device 442 is used to pre-spot weld the positive electrode current collector pressed on the end of the battery cell;

[0123] The positive current collecting disc transport assembly 441 includes a transport component 4411, a positioning component 4412 and a flipping component 4413. The transport component 4411 includes a suction cup and a slide extending along the transport direction of the third battery cell conveyor line 41. The slide covers the positive current collecting disc feeding unit 43, the positioning component 4412 and the flipping component 4413. The suction cup is used to suck the positive current collecting disc from the positive current collecting disc feeding unit 43 and release the positive current collecting disc at the positioning component 4412. The slide is used to drive the suction cup to move between the positive current collecting disc feeding unit 43, the positioning component and the flipping component in sequence. The flipping component 4413 is used to transfer the positive current collecting disc positioned and placed at the positioning component 4412 to the positive current collecting disc pressing tooling.

[0124] The full welding unit 45 includes a full welding device, which is arranged at the full welding station and is used for full welding the pre-spot-welded battery cell ends;

[0125] The penetration welding unit 46 includes a penetration welding device, which is arranged at the penetration welding station and is used to perform penetration welding on the ends of the battery cells after full welding; wherein the pre-spot welding device 442, the full welding device and the penetration welding device are all laser welding devices;

[0126] The rolling unit 47 is provided at the rolling station to remove the welding spots and welding slag at the weld seam of the battery cell after welding; it includes a clamping rotating component and a rolling component, the third battery cell conveying line 41 drives the battery cell to move between the clamping rotating component and the rolling component, the clamping rotating component clamps the end of the battery cell to drive the battery cell to rotate, and the rolling component rolls the weld seam of the battery cell;

[0127] The third inspection unit 48 is arranged at the third inspection station, and is used to detect the welding effect of the battery cell after welding; it includes a 3D scanning weld device 481 and a post-welding visual inspection device 482, the 3D scanning weld device 481 is used to detect the weld quality of the battery after penetration welding, and the post-welding visual inspection device 482 is specifically a 2D visual inspection device 571, which is used to detect the weld quality of the battery cell after rolling; the third inspection unit 48 also includes a short circuit detection device 483, which is used to perform short circuit detection on the battery cell after rolling; the third production device 4 also includes a third rejection unit, which is used to cooperate with the third inspection unit 48 to process the battery cells with unqualified quality offline through the third rejection unit.

[0128] The third unloading unit 49 includes a second turning unloading component, which is used to turn the horizontal battery cells on the third battery cell conveying line 41 into a vertical posture and place them on the battery cell main conveying line 1.

[0129] Specifically, the pre-spot welding unit 44, the full welding unit 45 and the penetration welding unit 46 in the present application all include a welding unit with the same structure and working principle as the "battery cell transfer tooling 251", and the welding unit is provided with two connecting plates, and a welding part and a buffer part are provided on each connecting plate, and the welding part and the buffer part are alternately connected to the third battery cell conveying line 41; the corresponding positive electrode collector plate pressing tooling, positioning parts and flipping parts are respectively provided with two groups, corresponding to the two connecting plates in the pre-spot welding unit 44; at the same time, the corresponding pre-spot welding device 442, full welding device and penetration welding device have the same welding structure and movement process as the "negative electrode collector plate welding assembly 254", and when working, they alternately switch on one side of the two connecting plates to perform welding operations.

[0130] like Fig.23 , Fig.24As shown, the fourth production device 5 is formed with a first cleaning station, a nail supply station, a sealing nail welding station, a coding station and a fourth inspection station, and the fourth production device 5 includes: a fourth battery cell conveyor line 51, located on one side of the battery cell main conveyor line 1, and the fourth battery cell conveyor line 51 passes through the first cleaning station, the nail supply station, the sealing nail welding station, the coding station and the fourth inspection station in sequence to convey the battery cells; a multi-row battery cell carrier 511, arranged on the fourth battery cell conveyor line 51, to carry multiple rows of vertical battery cells and move with the fourth battery cell conveyor line 51; in this embodiment, the battery cells on the multi-row battery cell carrier 511 are two rows; a fourth loading unit 52, including a second vertical loading component, used to convey the battery cells on the battery cell main conveyor line 1 to the multi-row battery cell carrier 511 in a vertical posture; wherein the second vertical loading component has the same structure as the first vertical loading component;

[0131] The first cleaning unit 53 includes a laser cleaning mechanism, which is arranged at the first cleaning station to clean the injection holes of the battery cells on the multi-row battery cell carrier 511 moved to the first cleaning station. In the present embodiment, the first cleaning unit 53 can also be other cleaning mechanisms capable of cleaning the injection holes of the battery cells, such as an alcohol cleaning mechanism, a dimethyl carbonate (DMC) cleaning structure, etc., which is not specifically limited in the present embodiment; in the present embodiment, the laser cleaning mechanism includes a laser cleaning component A and a laser cleaning component B which are arranged on both sides of the fourth battery cell conveying line 51 and are symmetrically arranged along the conveying trajectory line of the fourth battery cell conveying line 51, and also includes two corresponding groups of laser dust removal positioning mechanisms. The laser cleaning component A and the laser cleaning component B synchronously perform laser cleaning on the two rows of battery cells on the multi-row battery cell carrier 511, and respectively position and remove dust on the two rows of battery cells through the two groups of laser dust removal positioning mechanisms.

[0132] The sealing nail feeding unit 54 is provided at the nail supply station, and is used to pick up the sealing nails and move the sealing nails to the sealing nail welding station; wherein, the sealing nail feeding unit 54 adopts a sealing nail feeding mechanism, and the sealing nail feeding mechanism has the same structure as the outer insulating sheet transfer mechanism, and of course, a multi-axis industrial robot in the prior art can also be directly used for picking up; the sealing nail welding unit 55 includes a sealing nail welding mechanism, and is provided at the sealing nail welding station, and is used to weld the sealing nails in the liquid injection holes of the battery core;

[0133] The coding unit 56 is provided at the coding station and is used to laser engrave the battery cell. In this embodiment, the sealing pin welding unit 55 and the coding unit 56 are arranged in the same manner in the fourth production device 5, and both have a laser. The difference lies in the different models, control methods and actions performed by the lasers.

[0134] The sealing nail welding unit 55 / coding unit 56 includes two sealing nail welding assemblies / two laser coding assemblies and two sets of laser dust removal positioning mechanisms, which are arranged on both sides of the fourth battery cell conveying line 51 and symmetrically arranged along the conveying track line of the fourth battery cell conveying line 51. The two sealing nail welding assemblies / two laser coding assemblies are symmetrically arranged, and the two rows of battery cells on the multi-row battery cell carrier 511 are laser welded / coded synchronously by the two sealing nail welding assemblies / two laser coding assemblies, and the two rows of battery cells are positioned and dusted respectively by the two sets of laser dust removal positioning mechanisms.

[0135] The fourth inspection unit 57 is provided at the fourth inspection station, and is used to inspect the weld of the sealing nail; in the present embodiment, the fourth inspection unit 57 includes a 2D visual inspection device 571 and a 3D visual inspection device 572, and the 2D visual inspection device 571 and the 3D visual inspection device 572 are respectively arranged in sequence along the conveying direction of the fourth battery cell conveying line 51, and are used to perform 2D and 3D inspections on the weld of the sealing nail; the fourth production device 5 also includes a fourth rejection unit 59, which is used to cooperate with the fourth inspection unit 57, and the battery cells with unqualified quality are processed offline through the fourth rejection unit 59;

[0136] The fourth unloading unit 58 includes a second vertical unloading component, which is used to transport the battery cells on the fourth battery cell conveying line 51 to the battery cell main conveying line 1 in a specified posture. The second vertical unloading component has the same structure as the first vertical unloading component.

[0137] like Figure 24 to Figure 26 As shown, the fifth production device 6 is formed with a second cleaning station, a first rejecting station and a film covering station, and the fifth production device 6 includes: a fifth battery cell conveying line 61, located on one side of the battery cell main conveying line 1, and the fifth battery cell conveying line 61 passes through the second cleaning station, the first rejecting station and the film covering station in sequence to convey the battery cells;

[0138] The fifth loading unit 62 includes a third flipping loading component, which is used to flip the vertical battery cells on the battery cell main conveying line 1 into a horizontal position, and convey them to the fifth battery cell conveying line 61 in a longitudinal arrangement posture;

[0139] The second cleaning unit 63 is arranged at the second cleaning station, and the end face cleaning mechanism 631 and the cylindrical cleaning mechanism 632 are respectively used to clean the end face and the cylindrical surface of the battery cell; specifically, the cylindrical cleaning mechanism 632 includes a first cleaning component and a dust removal pipe arranged perpendicular to the battery cell, and also includes a supporting wheel for receiving the battery cell and driving the battery cell to rotate, and a third driving unit for driving the supporting wheel to operate; the end face cleaning mechanism 631 includes a second cleaning component distributed on both sides of the fifth battery cell conveyor line 61; the first cleaning component and the second cleaning component are plasma rotating spray guns; the first cleaning component is arranged above the battery cell, and the spray gun has a fixed height, the gun head rotates to spray plasma, and the battery cell rotates one circle driven by the driving wheel to complete the plasma cleaning of the cylindrical surface. At the same time, the end face cleaning mechanism 631 is respectively arranged at both ends of the battery cell, and the spray gun rotates to perform plasma cleaning on the end face of the battery cell; it also includes a fifth detection unit 64, which detects dirt, scratches and impurities on the cylindrical surface of the battery cell by visual detection. The fifth rejection unit 65 is provided at the first rejection station, and is used to reject unqualified products detected by the fifth detection unit 64; the fifth rejection unit 65 can adopt a multi-axis industrial picking robot; the film covering unit 66 is provided at the film covering station, and is used to cover the film on the surface of the battery cell; the film covering unit 66 is a film covering machine;

[0140] The fifth unloading unit 67 includes a third turning unloading component, which is used to transport the battery cells on the fifth battery cell conveying line 61 to the battery cell main conveying line 1 in a specified posture.

[0141] The film covering unit 66 is arranged on the side of the fifth battery cell conveyor line 61, and the film covering unit 66 includes a material tray 661, a feeding wheel 662, a film guide shaft 663, a cutter 664, a clamping part 665 and a mounting frame; a film tape is arranged on the material tray 661, and the film tape is pulled to the film guide shaft 663 by the feeding wheel 662, and the film guide shaft 663 is coaxial with the axis of the corresponding battery cell, and the film tape is sleeved on the film guide shaft 663 to stretch the film tape, so as to facilitate the transfer of the film on the film guide shaft 663 to the battery cell; the clamping part 665 is used to clamp the film tape and move it on the film guide shaft 663, and the cutter 664 is used to cut the film tape;

[0142] Specifically, an end of the film guide shaft 663 close to the feeding wheel 662 is provided with an axis head 6631, and the axis head 6631 is in a duckbill shape from small to large. When the film tape is first loaded, the film tape is manually sleeved on the axis head 6631, and the film tape is pulled to the other end of the film guide shaft 663, and cut by the cutter 664. The feeding wheel 662 continues to drive the film tape forward to feed the material, and the cut film sleeve moves and sleeves on the outer surface of the battery cell under the push of the rear film sleeve; in order to facilitate the movement of the film tape on the film guide shaft 663, a sliding section is provided on the film guide shaft 663, and a guide cylinder 6632 is sleeved on the sliding section, and the diameter of the sliding section is smaller than the diameter of the film guide shaft 663; at the same time, the pressing part 666 is arranged on an inner side wall of the mounting frame, and the clamping part 665 includes a fourth driving unit 6651 and a fifth driving unit 6652. 652, and also includes two groups of clamping blocks for clamping the guide cylinder 6632 and the film tape; the fifth driving unit 6652 is used to drive the two groups of clamping blocks to move relative to each other to clamp the guide cylinder 6632 and the film tape, and the sixth driving unit is used to drive the clamping part 665 to reciprocate and pull the guide cylinder 6632 and the film tape to move toward the cutter 664; the pressing part 666 presses and fixes the film tape at a fixed period, and when the fourth driving unit 6651 drives the guide cylinder 6632 and the film tape to move toward the cutter 664, the fifth driving unit 6652 is in a clamping state, and the pressing part 666 is in an unlocking state to facilitate the advancement of the film tape, and during the resetting process of the guide cylinder 6632, in order to ensure that the film tape is fixed in position, the pressing part 666 presses down and fixes the film tape on the film guide shaft 663 to prevent it from shifting.

[0143] It should be added that a reset member 6633 corresponding to the guide cylinder 6632 is provided in the sliding section, and the reset member 6633 is used to push the guide cylinder 6632 away from one end of the cutter 664; the pressing part 666 is used to fix the film tape during the reset process of the clamping part 665. When in use, the film tape can be periodically advanced to the cutter 664, so that after being cut by the cutter 664, it can be sleeved on the battery cell.

[0144] It should also be noted that a first mounting hole corresponding to the film guide shaft 663 is provided on the mounting frame, and magnetic rings 6635 are provided on the inner wall of the first mounting hole and both ends of the film guide shaft 663. The magnetic rings 6635 are used to suspend the film guide shaft 663 in the mounting frame; a plurality of guide wheels 6634 in contact with the film guide shaft 663 are provided in the mounting frame.

[0145] It should also be added that the cutter 664 includes a sixth drive unit, a rotating ring and a blade; the sixth drive unit is connected to the rotating ring in a transmission manner; the rotating ring and the axis of the film guide shaft 663 are in the same straight line, and the rotating ring is rotatably arranged on the mounting frame; the blade is fixedly arranged on the rotating ring. When the sixth drive unit is in operation, it can drive the rotating ring and the blade to rotate along the film guide shaft 663 and cut the film strip, and the cut film strip can be pushed forward under the subsequent film strip conveying and sleeved on the surface of the battery cell.

[0146] Finally, it should be noted that the fifth battery cell conveying line 61 and the fifth loading unit 62 , the second cleaning unit 63 , the fifth detection unit 64 , the film covering unit 66 and the fifth unloading unit 67 are all in two groups and are arranged opposite to each other.

[0147] like Fig. 27 As shown, the sixth production device 7 includes two sixth battery cell conveying lines 71, and the two sides of the two sixth battery cell conveying lines 71 are respectively formed with incoming material scanning stations, coding stations, end face detection stations, length detection stations, film sleeve detection stations, diameter detection stations, weighing stations and second rejection stations. Each sixth battery cell conveying line 71 is arranged on one side of the battery cell main conveying line 1, and passes through the incoming material scanning station, coding station, end face detection station, length detection station, film sleeve detection station, diameter detection station, weighing station and second rejection station in sequence to convey the battery cells; the sixth production device 7 also includes:

[0148] The sixth loading unit 72 is provided with two, corresponding to the two sixth battery cell conveyor lines 71 respectively, and includes a fourth flip loading component, which is used to flip the vertical battery cells on the battery cell main conveyor line 1 into a horizontal position, and convey them to the corresponding sixth battery cell conveyor line 71 in a longitudinal arrangement posture; the sixth loading unit 72 can also be loaded by an industrial robot;

[0149] The code scanning unit 73 is a code scanning device, which is arranged at the incoming code scanning station and is used to scan the code engraved on the battery cell by the coding unit 56;

[0150] The coding unit 74 is provided at the coding station, and is used to code on the battery cell and scan the code; specifically, it includes a coding device and a code scanner, the coding device first codes on the battery cell, and the code scanner then scans the code; wherein the coding device may also be a laser coding device;

[0151] The end face detection unit 75 is a visual detection device, which is arranged at the end face detection station to detect the end face of the battery cell; the visual detection device is specifically a CCD visual detection device; the length detection unit 76 is arranged at the length detection station to detect the length size of the battery cell; specifically, the length detection unit 76 can be a photoelectric sensor; the film detection unit 77 is arranged at the film detection station to detect defects in the film of the battery cell; specifically, the film detection unit 77 can be a 2.5D line scan camera; the diameter detection unit 78 is arranged at the diameter detection station to detect the diameter size of the battery cell; specifically, the diameter detection unit 78 can be Photoelectric sensor; a weighing unit 79, which is arranged at the weighing station to detect the weight of the battery cell; specifically, the weighing station can be an electronic belt scale; the sixth rejection unit 701, which is arranged at the second rejection station to reject the unqualified products detected by any of the inkjet station, the end face detection station, the length detection station, the sleeve detection station, the diameter detection station and the weighing station; the sixth rejection unit 701 can adopt a multi-axis industrial picking robot; the sixth unloading unit 702, including a fourth flipping unloading component, is used to flip the horizontal battery cell on the sixth battery cell conveyor line 71 to a vertical posture and place it on the battery cell main conveyor line 1.

[0152] like Fig.28 , Fig.29 As shown, the first flip loading component, the second flip loading component, the third flip loading component, the fourth flip loading component, the first flip unloading component, the second flip unloading component, the third flip unloading component and the fourth flip unloading component all include a flipping mechanism 8 and a moving mechanism 9;

[0153] The mobile mechanism 9 is provided with a first grasping component 91 and a second grasping component 92, which are arranged in parallel, and the first grasping component 91 and the second grasping component 92 also have a lifting function to grasp the battery cell. The mobile mechanism 9 is used to drive the first grasping component 91 and the second grasping component 92 to alternately transfer over the flipping mechanism 8, the battery cell main conveying line 1 and the corresponding battery cell conveying line; the first grasping component 91 is used to grasp the battery cell placed vertically on the battery cell main conveying line 1, and transfer the battery cell to the flipping mechanism 8, which is attached Fig. 20It can be known that the first grasping component 91 is provided with vertical clamps, the spacing of which corresponds to the width of the battery cell, so as to grasp the vertically arranged battery cell; the flipping mechanism 8 is used to adjust the vertical battery cell to a horizontal posture; the second grasping component 92 is used to grasp the battery cell in a horizontal posture in the flipping mechanism 8, and transfer it to the corresponding battery cell conveying line in this posture, and the second grasping component 92 is provided with horizontal clamps, the spacing of which corresponds to the length of the battery cell, so as to grasp the horizontally arranged battery cell. Among them, the flipping mechanism 8 includes a battery cell positioning block 81 and an extrusion block 82. A push head for contacting the battery cell is provided in the battery cell positioning block 81, and the push head is conical in shape to contact the battery cell. The battery cell positioning block 81 is provided with a storage portion corresponding to the battery cell, and the vertical battery cell can be placed in the storage portion;

[0154] It also includes a first driving unit 83 for driving the cell positioning block 81 to rotate, and a second driving unit 84 for driving the extrusion block 82 to move; the first driving unit 83 is used to drive the cell positioning block 81 and the cells inside it to rotate 90 degrees, and adjust the vertical cells to a horizontal posture. The second driving unit 84 is used to drive the extrusion block 82 to move toward the cells in the horizontal posture and press the cells together, so as to regularize the horizontal posture and arrange them evenly, so as to facilitate the subsequent second grasping component 92 to grasp and transfer.

[0155] like Fig.30As shown, the present invention also discloses a production process of a cylindrical battery. Based on the above-mentioned cylindrical battery automatic assembly line, the production process of the cylindrical battery cell includes the following steps: S100, welding the negative electrode collector to the negative electrode of the battery cell through the first production device 2; the battery cell main conveyor line 1 transports the battery cell to the first production station, and the first production device 2 can weld the negative electrode collector to the negative electrode of the battery cell; S200, after the battery cell with the negative electrode collector welded is put into the shell by the second production device 3, the outer insulating sheet is fed to the negative end of the battery cell, the nut is locked into the battery cell, and the outer insulating sheet is fed to the negative end of the battery cell, and the nut is locked into the battery cell. The negative electrode column of the battery cell is welded to the negative electrode column of the battery cell (the negative electrode column is a stud) and the nut is welded to the negative electrode column of the battery cell; the battery cell main conveyor line 1 transports the battery cell from the first production station to the second production station, and the second production device can push the battery cell with the negative current collector welded into the shell until the bottom of the shell, and then put an insulating sheet on the negative electrode of the battery cell, and then lock the nut into the negative electrode column of the battery cell, and finally weld the nut to the negative electrode column of the battery cell; S300, weld the positive current collector to the positive electrode of the battery cell with the nut welded through the third production device 4; the battery cell main conveyor line 1 transports the battery cell from the first production station to the second production station, and the second production device can push the battery cell with the negative current collector welded to the shell until the bottom of the shell, and then put an insulating sheet on the negative electrode of the battery cell, and then lock the nut into the negative electrode column of the battery cell, and finally weld the nut to the negative electrode column of the battery cell; S300, weld the positive current collector to the positive electrode of the battery cell with the nut welded The conveyor line 1 transports the battery cell from the second production station to the third production station, and the third production device 4 can weld the positive collector plate to the positive electrode of the battery cell; S400, the battery cell injection hole is cleaned by the fourth production device 5 for the battery cell that has completed the welding of the positive collector plate, and the sealing nail is welded to the battery cell injection hole; the battery cell main conveyor line 1 transports the battery cell from the third production station to the fourth production station, and the fourth production device 5 first cleans the battery cell injection hole, and then welds the sealing nail to the injection hole of the battery cell after cleaning; S500, the fifth production device 6 The surface of the battery cell on which the sealing pins have been welded is cleaned and a film is sleeved on the surface of the battery cell; the battery cell main conveyor line 1 transports the battery cell from the fourth production station to the fifth production station, and the fifth production device 6 first cleans the surface of the battery cell, and then sleeves the film on the surface of the battery cell after cleaning; S600, the battery cell on which the film sleeve is completed is quality inspected by the sixth production device 7; the battery cell main conveyor line 1 transports the battery cell from the fifth production station to the sixth production station, and the sixth production device 7 can perform an overall quality inspection on the battery after the sleeve is thinned.

[0156] In the technical solution of the present application, during the transportation process of the battery cell main conveyor line 1, the first production device 2, the second production device 3, the third production device 4, the fourth production device 5, the fifth production device 6 and the sixth production device 7 successively perform processing tasks such as negative collector plate welding, battery cell shelling, external insulating sheet loading, battery cell locking nut welding, nut and battery cell pole welding, positive collector plate welding, sealing nail welding, battery cell sleeve film and battery cell testing for the battery cells, so as to realize the automated, efficient and precise production of cylindrical batteries, effectively reduce the number of transfers of parts between different production lines and different production workshops, and reduce the probability of defective and waste products caused by transfer.

[0157] In this embodiment, step S100 includes:

[0158] The incoming materials are put on line, and the battery cells are put on line in a horizontal posture to the first battery cell conveyor line 21, and the negative collector plate is conveyed to the negative collector plate welding station through the negative collector plate feeding unit 23, and the negative insulating sheet is conveyed to the negative insulating sheet pasting station through the negative insulating sheet feeding unit 24;

[0159] The main cell conveyor line 1 transports the cells to the first production station, the first cell conveyor line 21 transports the cells to the negative electrode collector plate welding station, and the negative electrode collector plate goes online to the negative electrode collector welding station to wait for welding with the cells;

[0160] Negative electrode collector disc welding, the battery cell conveyed by the first battery cell conveyor line 21 is received by the battery cell transfer tooling 251, and the battery cell is transferred to the negative electrode collector disc pressing tooling 252, the negative electrode collector disc conveyed by the negative electrode insulating sheet feeding unit 24 is received by the negative electrode collector disc feeding tooling 253, and the negative electrode collector disc is transferred to the negative electrode collector disc pressing tooling 252, the negative electrode collector disc pressing tooling 252 receives the negative electrode collector disc conveyed by the negative electrode collector disc feeding unit 23 and presses the negative electrode collector disc to the end of the battery cell on the battery cell transfer tooling 251, and then the negative electrode collector disc welding assembly 254 welds the negative electrode collector disc to the negative electrode of the battery cell;

[0161] The first cell conveyor line 21 transports the cell that has completed the welding of the negative electrode collector plate to the first inspection station, and the first inspection unit 26 performs visual inspection and short circuit inspection on the end of the cell that has completed the welding of the negative electrode collector plate;

[0162] The first cell conveying line 21 transports the cell from the first inspection station to the positive electrode encapsulation station, and the positive electrode of the cell is encapsulated by the positive electrode encapsulation unit 27;

[0163] The first cell conveyor line 21 transports the cell from the positive electrode encapsulation station to the negative electrode encapsulation station. During this process, the first cell conveyor line 21 drives the cell to pass through the cell turning unit 28, and the cell turning unit 28 turns the cell that has completed the positive electrode encapsulation 180 degrees.

[0164] Paste the negative electrode insulating sheet. The negative electrode insulating sheet pasting station and the negative electrode encapsulation station are set at the same position relative to the first battery cell conveyor line 21. The negative electrode insulating sheet is picked up by the negative electrode insulating sheet feeding tool 292, and the negative electrode insulating sheet is conveyed to the negative electrode insulating sheet pressing tool 291. After picking up the negative electrode insulating sheet, the negative electrode insulating sheet pressing tool 291 presses the negative electrode insulating sheet to the negative end of the battery cell, and then the negative electrode of the battery cell is encapsulated by the negative electrode encapsulation unit 201.

[0165] The first cell conveying line 21 transports the cell from the negative electrode encapsulation station to the cell encapsulation station, and the cell encapsulation unit 202 performs encapsulation treatment on the ends of the encapsulated cell.

[0166] The first battery cell conveyor line 21 drives the battery cells after the glue collection to continue to move through the first unloading unit 203 , and the battery cells after the glue collection are flipped into a vertical posture by the first unloading unit 203 and placed on the battery cell main conveyor line 1 .

[0167] The battery cell transfer tool 251 works by the following steps:

[0168] S111, the first connecting plate 2511 and the second connecting plate 2512 are connected to the first battery cell conveying line 21 in sequence;

[0169] S112, the first welding part 25111 and the first buffer part 25112 on the first connecting tray 2511 are alternately connected to the first battery cell conveying line 21, and the second welding part 25121 and the second buffer part 25122 on the second connecting tray 2512 are alternately connected to the first battery cell conveying line 21; when the buffer part on one connecting tray is connected to the first battery cell conveying line 21, the welding part on the other connecting tray is synchronously connected to the first battery cell conveying line 21, and the buffer part and the welding part are connected;

[0170] S113 , the negative electrode current collecting plate welding assembly 254 welds the battery cells in the welding portion in the non-connected state.

[0171] The negative electrode current collecting plate feeding tool 253 operates in the following steps:

[0172] S121. Pick up the negative electrode current collecting disc delivered by the negative electrode current collecting disc feeding unit 23 through the first material picking component 2531 and transfer the negative electrode current collecting disc to the negative electrode current collecting disc positioning component 2532, and adjust the position of the current collecting disc; S122. Pick up the negative electrode current collecting disc in the negative electrode current collecting disc positioning component 2532 through the negative electrode current collecting disc dividing component 2533, and transfer it to the negative electrode current collecting disc flipping component 2534 at the corresponding battery cell; S123. Adjust the posture of the current collecting disc through the negative electrode current collecting disc flipping component 2534, and adjust the position of the negative electrode current collecting disc to correspond to the negative electrode current collecting disc pressing tooling 252.

[0173] The negative electrode insulating sheet feeding tool 292 operates in the following steps:

[0174] S131. Pick up the negative electrode insulating sheet on the negative electrode insulating sheet feeding unit 24 through the second material picking component 2921, and move it laterally to the primary positioning component 2922 for primary positioning; S132. Pick up the negative electrode insulating sheet in the primary positioning component 2922 through the negative electrode insulating sheet dividing component 2923, and transfer it laterally to the secondary positioning component 2925 for secondary positioning; S133. Pick up the negative electrode insulating sheet in the secondary positioning component 2925 through the negative electrode insulating sheet flipping component 2924, and flip the negative electrode insulating sheet to a vertical posture, drive the negative electrode insulating sheet in the vertical posture to move, so that the position of the negative electrode insulating sheet corresponds to the negative electrode insulating sheet pressing tooling 291.

[0175] In this embodiment, step S200 includes:

[0176] The shell conveyor line 32 conveys the shell to the battery cell shelling station, and the battery cell main conveyor line 1 transports the battery cell to the second production station; the battery cell shelling unit 36 ​​first conveys the shell to the second battery cell conveyor line 31 with the opening facing downward, and then moves the battery cell to the bottom of the corresponding shell in a vertical posture, and pushes the battery cell upward into the corresponding shell;

[0177] The second cell conveyor line 31 transports the cell that has been shelled to the external insulating sheet loading station, and the external insulating sheet feeding unit 34 transports the external insulating sheet to the external insulating sheet loading station. The external insulating sheet loading unit 37 sucks the external insulating sheet from the external insulating sheet feeding unit 34, and transfers the external insulating sheet to the top of the corresponding cell, and drives the external insulating sheet to move downward, so that the external insulating sheet is placed on the negative pole of the cell.

[0178] The second cell conveyor line 31 transports the cells from the outer insulating sheet loading station to the cell screw locking station, and the nut feeding unit 35 conveys the nuts to the cell screw locking station, and the cell screw locking unit 38 picks up a plurality of nuts and tightens the nuts onto the negative poles of the cells to be processed;

[0179] The second cell conveyor line 31 transports the cell from the cell screw locking station to the cell screw welding station, and the screws are welded to the cell negative pole by the screw welding unit 39;

[0180] The second cell conveyor line 31 transports the cell from the cell screw welding station to the second inspection station, and the second inspection unit inspects the locking effect of the screw and the negative electrode of the cell before the screw is welded, and inspects the welding effect of the screw and the negative electrode of the cell after the screw is welded;

[0181] The second battery cell conveyor line 31 drives the battery cells that have been inspected by the second inspection station to continue to move and pass through the second unloading unit 303 , and the battery cells are placed on the battery cell main conveyor line 1 in a vertical posture through the second unloading unit 303 .

[0182] The second battery cell conveying line 31 is provided with a shell carrier 321, and the battery cell shell insertion unit 36 ​​operates by the following steps:

[0183] S211, clamp the shell on the shell conveyor through the shell loading component 361, and convey the shell to the shell carrier 321 with the opening facing downward; S212, the second battery cell conveying line 31 drives the shell carrier 321 equipped with the shell to move to the vertical shell entry component 362; S213, the vertical shell entry component 362 first receives the vertical battery cell on the second loading unit 33 through the battery cell feeding component 3621 and moves the battery cell in a vertical posture to the bottom of the shell carrier 321, then clamps and positions the shell in the shell carrier 321 through the shell positioning component 3623, and pushes the battery cell from bottom to top into the shell through the battery cell pushing component 3622, thereby completing the vertical shell entry of the battery cell.

[0184] In this embodiment, step 400 includes: loading the incoming materials onto the fourth cell conveying line 51 in a vertical position, and conveying the sealing nails to the nail supply station through the sealing nail loading unit 54;

[0185] The main cell conveyor line 1 conveys the cells to the fourth production station, and the fourth cell conveyor line 51 conveys the cells to the first cleaning station, where the injection holes of the cells are cleaned by the first cleaning unit 53;

[0186] The fourth cell conveying line 51 transports the cell from the first cleaning station to the sealing pin welding station, and the sealing pin is welded in the injection hole of the cell by the sealing pin welding unit 55;

[0187] The fourth cell conveyor line 51 transports the cells from the sealing nail welding station to the coding station, and the coding unit 56 performs laser coding on the cells;

[0188] The fourth cell conveyor line 51 transports the cells from the coding station to the fourth inspection station, and the welds of the sealing pins are inspected by the fourth inspection unit 57;

[0189] The fourth battery cell conveyor line 51 drives the battery cells inspected by the fourth inspection station to continue to move and pass through the fourth unloading unit 58 , and the battery cells are placed on the battery cell main conveyor line 1 in a vertical posture through the fourth unloading unit 58 .

[0190] In this embodiment, step 500 includes:

[0191] Incoming materials are put on line, and the battery cells are put on line in a horizontal position to the fifth battery cell conveying line 61;

[0192] The main cell conveyor line 1 transports the cells to the fifth production station, and the fifth cell conveyor line 61 transports the cells to the second cleaning station, where the end faces and cylindrical surfaces of the cells are cleaned by the second cleaning unit 63;

[0193] The fifth cell conveyor line 61 transports the cells from the second cleaning station to the first rejecting station. During this process, the fifth cell conveyor line 61 drives the cells to pass through the fifth inspection unit 64 to inspect dirt, scratches and impurities on the cell cylindrical surface.

[0194] Rejecting unqualified products: Rejecting unqualified products after being tested by the fifth testing unit 64 through the fifth rejecting unit 65;

[0195] The fifth cell conveyor line 61 transports the cell from the first rejection station to the film covering station, and a film is covered on the outer surface of the cell by the film covering unit 66;

[0196] The fifth battery cell conveyor line 61 drives the battery cells after being coated to continue to move and pass through the fifth unloading unit 67 , and the battery cells are placed on the battery cell main conveyor line 1 in a vertical posture through the fifth unloading unit 67 .

[0197] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0198] It should be noted that if the embodiments of the invention involve directional indications (such as up and down), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0199] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "multiple" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the invention.

Claims

1. An automatic assembly line for cylindrical batteries, It is characterized in that The cylindrical battery automatic assembly line is sequentially formed with a first production station, a second production station, a third production station, a fourth production station, a fifth production station and a sixth production station along the battery core processing direction. The cylindrical battery automatic assembly line includes: The battery cell main conveying line (1) passes through the first production station, the second production station, the third production station, the fourth production station, the fifth production station and the sixth production station in sequence, and is used to convey semi-finished products of the battery cells; A first production device (2), arranged at the first production station, for welding the negative electrode collector plate of the battery cell; A second production device (3) is provided at the second production station, and is used to put the battery cell into the shell, and sequentially feed the outer insulating sheet to the negative end of the battery cell, lock the nut into the negative electrode post of the battery cell, and weld the nut to the negative electrode post of the battery cell; A third production device (4), arranged at the third production station, for welding the positive electrode collector plate of the battery cell; A fourth production device (5), arranged at the fourth production station, for cleaning the battery cell injection hole and welding the sealing pin to the battery cell injection hole; A fifth production device (6), arranged at the fifth production station, for cleaning the surface of the battery cell and applying a film to the surface of the battery cell; The sixth production device (7) is arranged at the sixth production station and is used for performing quality inspection on the battery cells.

2. The cylindrical battery automatic assembly line according to claim 1, It is characterized in that The first production device (2) is formed with a negative electrode current collector welding station, a first detection station, a positive electrode glue encapsulation station, a negative electrode insulation sheet pasting station, a negative electrode glue encapsulation station and a battery cell glue collection station, and the first production device (2) includes: A first battery cell conveying line (21) sequentially passes through a negative electrode current collector welding station, a first testing station, a positive electrode encapsulation station, a negative electrode insulating sheet pasting station, a negative electrode encapsulation station and a battery cell encapsulation station, for conveying battery cells; A first loading unit (22) is used to transport the battery cells on the battery cell main conveying line (1) to the first battery cell conveying line (21) in a horizontal longitudinal arrangement; A negative electrode current collecting disc feeding unit (23) is used to convey the negative electrode current collecting disc to the negative electrode current collecting disc welding station; A negative electrode insulation sheet feeding unit (24) is used to transport the negative electrode insulation sheet to the negative electrode insulation sheet pasting station; A negative electrode collector plate welding unit (25) is provided at the negative electrode collector plate welding station, comprising a cell transport tool (251), a negative electrode collector plate pressing tool (252), a negative electrode collector plate feeding tool (253) and a negative electrode collector plate welding assembly (254); the cell transport tool (251) is capable of switching between the first cell conveying line (21) and the negative electrode collector plate pressing tool (252) to transport the cell to be welded to the corresponding negative electrode collector plate pressing tool (254). 252), and transport the battery cell welded at the negative current collector plate pressing tool (252) back to the first battery cell conveyor line (21); the negative current collector plate pressing tool (252) is used to place the negative current collector plate and press the negative current collector plate to the end of the battery cell; the negative current collector plate feeding tool (253) is used to provide the negative current collector plate to the negative current collector plate pressing tool (252); the negative current collector plate welding assembly (254) is used to weld the negative current collector plate pressed to the end of the battery cell; A first detection unit (26), arranged at the first detection station, is used to perform visual detection and short circuit detection on the end of the battery cell after the negative electrode collector plate is welded; A positive electrode encapsulation unit (27), arranged at the positive electrode encapsulation station, is used to encapsulate the positive electrode of the battery cell; A battery cell turning unit (28), arranged at the positive electrode encapsulation station, is used to turn the battery cell that has completed the positive electrode encapsulation; A negative electrode insulating sheet pasting unit (29) is arranged at the negative electrode insulating sheet pasting station, comprising a negative electrode insulating sheet pressing tool (291) and a negative electrode insulating sheet feeding tool (292); the negative electrode insulating sheet pressing tool (291) is used to pick up the negative electrode insulating sheet and press the negative electrode insulating sheet onto the negative end of the battery cell; the negative electrode insulating sheet feeding tool (292) is used to provide the negative electrode insulating sheet to the negative electrode insulating sheet pressing tool (291); A negative electrode encapsulation unit (201), arranged at the negative electrode encapsulation station, is used to encapsulate the negative electrode of the battery cell; A battery cell glue collecting unit (202), arranged at the battery cell glue collecting station, is used to collect glue from the ends of the battery cells after glue coating; The first unloading unit (203) is used to transport the battery cells on the first battery cell conveying line (21) to the battery cell main conveying line (1) in a specified posture.

3. The cylindrical battery automatic assembly line according to claim 1, It is characterized in that The second production device (3) is formed with a battery cell shell insertion station, an external insulation sheet loading station, a battery cell screw locking station, a battery cell screw welding station and a second inspection station, and the second production device (3) includes: A second battery cell conveying line (31) sequentially passes through a battery cell shelling station, an outer insulation sheet loading station, a battery cell screw locking station, a battery cell screw welding station and a second inspection station to convey the battery cells; A shell conveying line (32) is used to convey the shell of the battery cell to the battery cell shell insertion station; A second loading unit (33) is used to convey the battery cells on the battery cell main conveying line (1) to the battery cell shelling station in a vertical posture; An outer insulating sheet feeding unit (34) is used to convey the outer insulating sheet to the outer insulating sheet loading station; A nut feeding unit (35) is used to supply nuts to the battery core screw locking station; A battery cell shelling unit (36) is arranged at the battery cell shelling station, and comprises a shell loading assembly (361) and a vertical shell loading assembly (362); the shell loading assembly (361) is used to clamp the shell on the shell conveying line (32), and convey the shell to the second battery cell conveying line (31) with the opening facing downward; the vertical shell loading assembly (362) is used to receive the vertical battery cell on the second loading unit (33), and move the battery cell in a vertical posture to the bottom of the shell, and push the battery cell upward into the shell; The external insulating sheet loading unit (37) is arranged at the external insulating sheet loading station, and comprises an external insulating sheet transfer component (371) and a guide component (372). The external insulating sheet transfer component (371) is used to absorb the external insulating sheet from the external insulating sheet feeding unit (34), transfer the external insulating sheet to the position directly above the guide component (372), and drive the external insulating sheet to move downward; the second battery cell conveying line (31) carries the battery cell with the shell into the guide component (372), and makes the negative terminal of the battery cell be located directly below the external insulating sheet transfer component (371); the guide component (372) is used to guide the external insulating sheet that moves downward and press against the battery cell from bottom to top, so that the external insulating sheet is loaded to the negative terminal of the battery cell; A battery core screw locking unit (38), arranged at the battery core screw locking station, is used to pick up a plurality of nuts and tighten the nuts onto a plurality of battery cores to be processed; A screw welding unit (39), arranged at the battery cell screw welding station, for welding the screw to the negative electrode of the battery cell; A second detection unit is provided at the second detection station, and is used to detect the locking effect of the screw and the negative electrode of the battery cell before the screw is welded, and to detect the welding effect of the screw and the negative electrode of the battery cell after the screw is welded; The second unloading unit (303) is used to transport the battery cells on the second battery cell conveying line (31) to the battery cell main conveying line (1) in a specified posture.

4. The cylindrical battery automatic assembly line according to claim 1, It is characterized in that The third production device (4) is formed with a pre-spot welding station, a full welding station, a penetration welding station, a hemming station and a third inspection station, and the third production device (4) includes: A third battery cell conveying line (41) passes through a pre-spot welding station, a full welding station, a penetration welding station, a hemming station and a third inspection station in sequence to convey the battery cells; A third loading unit (42) is used to transport the battery cells on the battery cell main conveying line (1) to the second battery cell conveying line (31) in a horizontal longitudinal arrangement; A positive electrode current collecting disc feeding unit (43) is used to convey the positive electrode current collecting disc to the pre-spot welding station; A pre-spot welding unit (44) is arranged at the pre-spot welding station, comprising a positive current collector disc transfer assembly (441), a positive current collector disc pressing tool and a pre-spot welding device (442), wherein the positive current collector disc transfer assembly (441) is used to transfer the positive current collector disc to the pressure head of the positive current collector disc pressing tool; the positive current collector disc pressing tool is used to place the positive current collector disc and press the positive current collector disc to the end of the battery cell; the pre-spot welding device (442) is used to pre-spot weld the positive current collector disc pressed to the end of the battery cell; A full welding unit (45) is provided at the full welding station and is used to perform full welding on the end of the battery cell and the positive electrode current collector after pre-spot welding; A penetration welding unit (46) is arranged at the penetration welding station and is used to perform penetration welding on the ends of the battery cells after full welding; A hemming unit (47), arranged at the hemming station, for removing welding spots and welding slag at the welding seam of the battery core after welding; A third detection unit (48), arranged at the third detection station, for detecting the welding effect of the battery cell after welding; The third unloading unit (49) is used to transport the battery cells on the third battery cell conveying line (41) to the battery cell main conveying line (1) in a specified posture.

5. The cylindrical battery automatic assembly line according to claim 1, It is characterized in that The fourth production device (5) is formed with a first cleaning station, a nail supply station, a sealing nail welding station, a coding station and a fourth inspection station, and the fourth production device (5) includes: A fourth battery cell conveying line (51) passes through the first cleaning station, the nail supply station, the sealing nail welding station, the coding station and the fourth inspection station in sequence to convey the battery cells; A multi-row battery cell carrier (511) is arranged on the fourth battery cell conveying line (51) and is used to carry multiple rows of battery cells and travel along the fourth battery cell conveying line (51); A fourth loading unit (52) is used to convey the battery cells on the battery cell main conveying line (1) to the multiple rows of battery cell carriers (511) in a vertical posture; A first cleaning unit (53) comprises a laser cleaning mechanism, which is arranged at the first cleaning station and is used to clean the injection holes of the battery cells on the multi-row battery cell carrier (511) moved to the first cleaning station; A sealing nail feeding unit (54) is arranged at the nail supply station and is used to pick up the sealing nails and move the sealing nails to the sealing nail welding station; A sealing pin welding unit (55), comprising a sealing pin welding mechanism, is arranged at the sealing pin welding station and is used to weld the sealing pin to the liquid injection hole of the battery cell; A coding unit (56), comprising a laser coding mechanism, is arranged at the coding station and is used to laser code the battery cell; A fourth inspection unit (57), provided at the fourth inspection station, for inspecting the weld of the sealing pin; The fourth unloading unit (58) is used to transport the battery cells on the fourth battery cell conveying line (51) to the battery cell main conveying line (1) in a specified posture.

6. The cylindrical battery automatic assembly line according to claim 1, It is characterized in that The fifth production device (6) is formed with a second cleaning station, a fifth inspection station and a film sleeve station, and the fifth production device (6) includes: A fifth battery cell conveying line (61) passes through the second cleaning station, the fifth inspection station and the film coating station in sequence to convey the battery cells; A fifth loading unit (62) is used to transport the battery cells on the battery cell main conveying line (1) to the fifth battery cell conveying line (61); A second cleaning unit (63) is provided at the second cleaning station, and an end surface cleaning mechanism (631) and a cylindrical surface cleaning mechanism (632) are used to clean the end surface and the cylindrical surface of the battery cell respectively; A fifth detection unit (64), used for visually detecting the cylindrical surface of the battery cell; A film covering unit (66), arranged at the film covering station and used for covering the film on the surface of the battery cell; The fifth unloading unit (67) is used to transport the battery cells on the fifth battery cell conveying line (61) to the battery cell main conveying line (1) in a specified posture.

7. The cylindrical battery automatic assembly line according to claim 5, It is characterized in that The sixth production device (7) is formed with an incoming material scanning station, a coding station, an end face detection station, a length detection station, a film detection station, a diameter detection station, a weighing station and a second rejection station, and the sixth production device (7) includes: A sixth cell conveying line (71) sequentially passes through a material code scanning station, a code spraying station, an end face detection station, a length detection station, a film detection station, a diameter detection station, a weighing station and a second rejection station to convey the cells; A sixth loading unit (72) is used to transport the battery cells on the battery cell main conveying line (1) to the sixth battery cell conveying line (71) in a horizontal longitudinal arrangement; A code scanning unit (73), arranged at the incoming code scanning station, for scanning the code engraved on the battery cell by the coding unit (56); A coding unit (74), arranged at the coding station, for coding on the battery cell and scanning the coding; An end face detection unit (75), arranged at the end face detection station, for detecting the end face of the battery cell; A length detection unit (76), arranged at the length detection station, for detecting the length of the battery cell; A film casing detection unit (77), arranged at the film casing detection station, is used to detect defects in the film casing of the battery cell; A diameter detection unit (78), arranged at the diameter detection station, for detecting the diameter size of the battery cell; A weighing unit (79), arranged at the weighing station, for detecting the weight of the battery cell; The sixth unloading unit (702) is used to transport the battery cells on the sixth battery cell conveying line (71) to the battery cell main conveying line (1) in a specified posture.

8. The cylindrical battery automatic assembly line according to claim 2, It is characterized in that The battery cell transfer tool (251) comprises a first connecting plate (2511) and a second connecting plate (2512) connected to the first battery cell conveying line (21); The first connecting plate (2511) is provided with a first welding portion (25111) and a first buffer portion (25112), wherein the first welding portion (25111) and the first buffer portion (25112) are alternately connected to the first battery cell conveying line (21); A second connecting plate (2512) is provided with a second welding portion (25121) and a second buffer portion (25122), wherein the second welding portion (25121) and the second buffer portion (25122) are alternately connected to the first battery cell conveying line (21); The first welding portion (25111) and the second buffer portion (25122) are simultaneously connected to the first battery cell transmission line (21), and the first welding portion (25111) and the second buffer portion (25122) are connected to each other; the first buffer portion (25112) and the second welding portion (25121) are simultaneously connected to the first battery cell transmission line (21), and the first buffer portion (25112) and the second welding portion (25121) are connected to each other; The negative electrode current collector plate pressing tool (252) is used to press the negative electrode current collector plate onto the ends of the battery cell in the first welding part (25111) and the second welding part (25121) in a non-connected state.

9. The cylindrical battery automatic assembly line according to claim 6, It is characterized in that The film covering unit (66) is arranged on the side of the fifth battery cell conveying line (61); The film covering unit (66) comprises a material tray (661), a feeding wheel (662), a film guide shaft (663), a cutter (664), a clamping portion (665) and a mounting frame; A film tape is provided on the material tray (661), and the film tape is pulled to the film guide shaft (663) via the feeding wheel (662). The film guide shaft (663) is used to stretch the film tape, and the film tape is sleeved on the film guide shaft (663). The clamping part (665) is used to clamp the film tape and move it on the film guide shaft (663), and the cutter (664) is used to cut the film tape.

10. A production process for cylindrical batteries, based on the cylindrical battery automatic assembly line according to any one of claims 1 to 9, It is characterized in that The production process of the cylindrical battery cell comprises the following steps: Welding the negative electrode collector to the negative electrode of the battery cell by a first production device (2); After the battery cell with the negative electrode collector plate welded is placed into a shell by the second production device (3), an outer insulating sheet is sequentially loaded onto the negative terminal of the battery cell, a nut is locked onto the negative electrode post of the battery cell, and the nut is welded to the negative electrode post of the battery cell; The positive electrode current collector is welded to the positive electrode of the battery cell after the nut welding is completed by a third production device (4); Cleaning the cell injection hole of the cell that has completed the welding of the positive electrode collector plate and welding the sealing pin to the cell injection hole by using the fourth production device (5); The surface of the battery cell to which the sealing pins have been welded is cleaned by a fifth production device (6) and a film is sleeved on the surface of the battery cell; The sixth production device (7) is used to perform quality inspection on the battery cells that have been coated with the film.

Citation Information

Patent Citations

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    CN112122831A

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