Soft package power battery module intelligent processing production line and processing production method

Abstract

The application belongs to the technical field of soft package battery module, and particularly relates to a soft package power battery module intelligent processing production line and a processing production method, the processing production line comprises an electric core processing section, a module stacking section and a module welding section, the electric core processing section comprises a cutting and bending mechanism, a dog ear bending mechanism and a foam attaching mechanism which are sequentially arranged along a processing direction, the module stacking section comprises a battery module stacking device and a battery module extrusion bundling device which are sequentially arranged along the processing direction, and the module welding section comprises a busbar mounting station, a pole ear bending and rolling mechanism and a pole ear welding mechanism which are sequentially arranged along the processing direction. The application realizes the automation of the whole production process of the soft package battery module.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of soft package battery module, and particularly relates to a soft package power battery module intelligent processing production line and a processing production method. BACKGROUND

[0002] With the development of the new energy industry, electric vehicles are increasingly widely used, and soft package lithium ion batteries are widely used in the market due to their light weight, high specific capacity, good safety performance, small internal resistance, flexible design and other advantages. How to reasonably plan and layout the processing production line of the soft package battery module, connect each processing procedure, realize the automation of the full-line production process of the soft package power battery module, and meet the increasing production demand is the main research direction at present. SUMMARY

[0003] The application aims at the above problems existing in the prior art, and provides a soft package power battery module intelligent processing production line and a processing production method capable of realizing the automation of the full-line production process.

[0004] To achieve the above purpose, the technical scheme of the application is as follows:

[0005] In a first aspect, the application provides a soft package power battery module intelligent processing production line, which comprises an electric core processing section, a module stacking section and a module welding section arranged in sequence along a processing direction. The electric core processing section comprises a cutting and bending mechanism, a dog ear bending mechanism and a foam attaching mechanism arranged in sequence along the processing direction. The cutting and bending mechanism is used for cutting and bending the electric core tab to a fixed length. The dog ear bending mechanism is used for bending the electric core dog ear. The foam attaching mechanism is used for attaching foam to the electric core. The module stacking section comprises a battery module stacking device and a battery module extrusion bundling device arranged in sequence along the processing direction. The battery module stacking device is used for stacking the electric core after foam attachment. The battery module extrusion bundling device is used for extruding and bundling the stacked electric core into a battery module. The module welding section comprises a busbar installation station, a tab bending and rolling mechanism and a tab welding mechanism arranged in sequence along the processing direction. The busbar installation station is used for installing a busbar to the battery module. The tab bending and rolling mechanism is used for bending the tab on the battery module and rolling the bent tab. The tab welding mechanism is used for welding the rolled tab and the busbar.

[0006] The module stacking section comprises a stacking turntable, a first stacking mechanism, and a second stacking mechanism. The stacking turntable is provided with a stacking table. The stacking turntable can drive the stacking table to rotate between a surface A and a surface B. The first stacking mechanism and the second stacking mechanism are respectively arranged close to the surface A and the surface B. When the stacking table rotates to the surface A, the first stacking mechanism is used to cooperate with the first stacking mechanism to stack the battery cell and the large support to form a battery cell module. When the stacking table rotates to the surface B, the second stacking mechanism is used to cooperate with the second stacking mechanism to stack the battery cell module and the end plate assembly to form a battery module precursor.

[0007] The first stacking mechanism comprises a battery cell moving mechanism, a first overturning mechanism, and a support moving mechanism. The battery cell moving mechanism is used to transfer the battery cell output by the battery cell processing section to the stacking table. The first overturning mechanism is used to adjust the front and back surfaces of the large support. The support moving mechanism is used to transfer the large support on the first overturning mechanism to the stacking table. The second stacking mechanism comprises an end plate assembly pre-assembly mechanism, a second overturning mechanism, and an end plate assembly moving mechanism. The end plate assembly pre-assembly mechanism is used to assemble an end plate, a foam, and a small support into an end plate assembly. The second overturning mechanism is used to adjust the front and back surfaces of the end plate assembly. The end plate assembly moving mechanism is used to transfer the end plate assembly on the second overturning mechanism to the stacking table.

[0008] The battery cell processing section further comprises a overturning and pairing mechanism between the dog ear folding mechanism and the foam attaching mechanism. The overturning and pairing mechanism comprises an automatic clamping jaw and a rotary driving member. The automatic clamping jaw is used to clamp the short side of the battery cell. The rotary driving member is used to drive the automatic clamping jaw to rotate.

[0009] The foam attaching mechanism comprises a battery cell glue spraying mechanism and a foam feeding mechanism. The battery cell glue spraying mechanism is used to spray glue on the battery cell. The foam feeding mechanism comprises a foam material bin, a material taking mechanism, and an attaching mechanism. The foam material bin is used to store the foam. The material taking mechanism is used to take the foam out of the foam material bin. The attaching mechanism is used to attach the battery cell that has been sprayed with glue to the foam on the material taking mechanism.

[0010] The battery cell processing section further comprises a feeding mechanism, a discharging mechanism, an IV / OCV testing mechanism, and an NG rejection mechanism. The feeding mechanism and the discharging mechanism are respectively arranged at the head and tail of the battery cell processing section. The IV / OCV testing mechanism and the NG rejection mechanism are arranged between the feeding mechanism and the cutting and bending mechanism. The IV / OCV testing mechanism is used to test the IV and OCV of the battery cell. The NG rejection mechanism is used to reject the battery cell that does not meet the IV test and / or OCV test.

[0011] The battery cell processing section further comprises a battery cell carrier, a first conveying mechanism, and an opening clamp mechanism; the battery cell carrier is used for clamping a battery cell, the first conveying mechanism is used for conveying the battery cell carrier in a processing direction, and the opening clamp mechanism is used for opening the battery cell carrier.

[0012] The tab bending and rolling mechanism comprises a first three-axis motion mechanism and two sets of bending and rolling mechanisms symmetrically arranged on the first three-axis motion mechanism; the bending and rolling mechanism comprises a bending mechanism and a rolling mechanism; the bending mechanism is used for bending the tab of the battery cell, and the rolling mechanism is used for rolling the bent tab of the battery cell.

[0013] The module welding section further comprises a tooling jig and a second conveying mechanism; the second conveying mechanism is used for conveying the tooling jig; the tooling jig comprises a fixed bottom plate and a rotating assembly; the fixed bottom plate is used for carrying a battery module; and the rotating assembly is used for rotating the fixed bottom plate on a horizontal plane at a busbar mounting station.

[0014] The tab welding mechanism comprises a pressing mechanism and a welding mechanism; the pressing mechanism comprises a second three-axis motion mechanism and two pressing head assemblies symmetrically arranged on the second three-axis motion mechanism; the second three-axis motion mechanism is used for driving the pressing head assemblies to press the tabs of the battery module; and the welding mechanism comprises a welding motion mechanism and a galvanometer assembly arranged on the welding motion mechanism; the welding motion mechanism is used for driving the galvanometer assembly to weld the tabs of the battery module.

[0015] In a second aspect, the present application provides a soft-pack power battery module intelligent processing and production method based on the foregoing production line, comprising: cutting and bending the tabs of the battery cell to a fixed length by the cutting and bending mechanism; folding the tabs of the battery cell by the tab folding mechanism; attaching the foam to the battery cell by the foam attaching mechanism; stacking the battery cells with attached foam by a battery module stacking device; extruding and bundling the stacked battery cells into a battery module by a battery module extruding and bundling device; installing a busbar to the battery module by a busbar mounting station; bending the tabs on the battery module and rolling the bent tabs by the tab bending and rolling mechanism; and welding the rolled tabs to the busbar by the tab welding mechanism.

[0016] Compared with the prior art, the soft package power battery intelligent processing production line has the advantages that the soft package power battery intelligent processing production line comprises an electric core processing section, a module stacking section and a module welding section, the electric core processing section comprises cutting and bending mechanisms, dog ear folding mechanisms and foam attaching mechanisms arranged in sequence along a processing direction, the module stacking section comprises battery module stacking devices and battery module extrusion bundling devices arranged in sequence along the processing direction, and the module welding section comprises busbar mounting stations, tab folding and rolling mechanisms and tab welding mechanisms arranged in sequence along the processing direction. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present application. Figure 2 It is a structural schematic diagram of the module stacking section in the present application. Figure 3 It is a structural schematic diagram of the electric core moving mechanism in the present application. Figure 4 It is a structural schematic diagram of the support loading mechanism in the present application. Figure 5 It is a structural schematic diagram of the support moving mechanism in the present application. Figure 6 It is a structural schematic diagram of the end plate assembly assembling mechanism in the present application. Figure 7 It is a structural schematic diagram of the extrusion bundling station in the present application. Figure 8 It is a structural schematic diagram of the extrusion mechanism in the present application. Figure 7 It is a structural schematic diagram of the extrusion mechanism in the present application. Figure 9 It is a top view of the electric core processing section in the present application. Figure 10 It is a structural schematic diagram of the electric core processing section in the present application. Figure 11 It is a structural schematic diagram of the first conveying mechanism in the present application. Figure 12 It is a top view of the electric core carrier in the present application. Figure 13 It is a side view of the electric core carrier in the present application. Figure 14 It is a structural schematic diagram of the line scanning and coding mechanism in the present application. Figure 15 It is a structural schematic diagram of the IV / OCV testing mechanism in the present application. Figure 16 It is a structural schematic diagram of the dog ear folding mechanism in the present application. Figure 17 It is a side view of the dog ear folding mechanism in the present application. Figure 18 It is a structural schematic diagram of the inner folding block in the present application. Figure 17 It is a structural schematic diagram of the inner folding block in the present application. Figure 19 It is a structural schematic diagram of the turnover pairing mechanism in the present application. Figure 20 It is a structural schematic diagram of the foam attaching mechanism in the present application. Figure 21 It is a structural schematic diagram of the material taking mechanism in the present application. Figure 22 It is a top view of the material taking mechanism in the present application. Figure 23 It is a side view of the material taking mechanism in the present application. Figure 24 It is a structural schematic diagram of the foam centering mechanism in the present application. Figure 25For Figure 24 Structure diagram of the middle material taking fork. Figure 26 Structure diagram of the mounting mechanism in the application. Figure 27 Structure diagram of the module stacking section in the application. Figure 28 Structure diagram of the second conveying mechanism in the application. Figure 29 Structure diagram of the tooling jig in the application. Figure 30 Front view of the tooling jig in the application. Figure 31 Side view of the tooling jig in the application. Figure 32 Structure diagram of the rotating assembly in the application. Figure 33 Structure diagram of the rotating motor in the application. Figure 34 Structure diagram of the code carving and scanning mechanism in the application. Figure 35 Structure diagram of the tab bending and rolling mechanism in the application. Figure 36 Structure diagram of the bending mechanism and the rolling mechanism in the application. Figure 37 Structure diagram of the tab welding mechanism in the application. Figure 38 Structure diagram of the post-welding detection mechanism in the application. Figure 39 Structure diagram of the cell online section in the application. Figure 40 Figure 39 Structure diagram of the double-motor driving mechanism in the application. Figure 41 Structure diagram of the battery module offline section. Figure 42 Structure diagram of the module grabbing clamp. Figure 43 Exploded view of the battery module precursor.

[0018] ​In the above figure, 1, cell processing section; 11, cell carrier; 111, carrier plate; 112, mounting frame; 113, pressing block; 114, elastic member; 115, clamping block; 1151, horizontal rod; 1152, floating rod; 116, guide rod; 117, pulley; 118, wedge-shaped top block; 12, first conveying mechanism; 13, upper line code scanning mechanism; 131, code scanning head support; 132, code scanning head; 14, IV / OCV testing mechanism; 141, first movement mechanism; 142, IV test probe; 143, OCV test probe; 15, cutting and bending mechanism; 16, dog ear folding mechanism; 161, bottom supporting mechanism; 162, dog ear folding lifting cylinder; 163, first driving assembly; 164, outer folding block; 165, second driving assembly; 166, inner folding block; 167, outer folding inclined surface; 17, overturning pairing mechanism; 171, second Z-direction linear driving module; 172, automatic clamping jaw; 1721, clamping jaw bottom plate; 1722, upper clamping plate; 1723, lower clamping plate; 1724, folding driving member; 173, rotary driving member; 18, foam attaching mechanism; 181, cell glue spraying mechanism; 182, foam material bin; 183, material taking mechanism; 1831, X-direction linear module; 1832, lifting driving member; 1833, material taking block; 1834, Y-direction driving member; 1835, material taking Y-shaped fork; 1836, Z-direction linear module; 1837, first suction cup; 1838, second suction cup; 1839, insertion slot; 184, attaching mechanism; 1841, Y-direction linear module; 1842, attaching driving member; 1843, attaching clamping jaw; 185, foam centering mechanism; 1851, third double-mover linear module; 1852, baffle; 2, module stacking section; 21, stacking turntable; 22, cell moving mechanism; 221, first double-mover linear module; 222, cell transfer turntable; 223, cell material taking clamp; 224, cell stacking clamp; 23, first overturning mechanism; 24, support moving mechanism; 241, second double-mover linear module; 242, large support transfer turntable; 243, large support material taking clamp; 244, large support stacking clamp; 25, end plate assembly pre-assembly mechanism; 251, loose part material taking mechanism; 252, gluing mechanism; 26, second overturning mechanism; 27, end plate assembly moving mechanism; 28, extrusion bundling station; 281, grabbing robot; 282, extrusion mechanism; 2821, upper extrusion block; 2822, lower pressing block; 2823, extrusion cylinder; 29, support feeding mechanism; 291, large support material bin; 292, large support material taking clamp; 3, module welding section; 31, tool jig; 311, fixed bottom plate; 3111, clamping block; 312, rotary assembly; 3121, rotary gear; 3122, rack; 3123, linear module; 3124, first driving member; 3125, insertion block; 3126, insertion slot; 313, battery module clamping assembly; 3131, rotary motor; 3132, threaded rod; 3133, clamping block; 3134, threaded sleeve;3135, card joint; 3136, card slot; 314, lower mounting plate; 315, second driving member; 316, moving block; 317, first spring; 32, second conveying mechanism; 321, upper layer working line; 322, lower layer reflow line; 33, code carving and scanning mechanism; 331, code carving and scanning movement mechanism; 332, laser code carving machine; 333, code scanning gun; 334, coaxial dust removal mechanism; 34, tab bending and rolling flattening mechanism; 341, first three-axis movement mechanism; 3411, double-motor X-axis linear module; 3412, Y-axis linear module; 3413, Z-axis linear module; 342, bending and rolling flattening mechanism; 3421, bending mechanism; 3422, rolling flattening mechanism; 35, tab welding mechanism; 351, pressing mechanism; 3511, second three-axis movement mechanism; 3512, pressing head assembly; 352, welding mechanism; 3521, welding movement mechanism; 3522, galvanometer assembly; 36, post-welding detection mechanism; 361, third three-axis movement mechanism; 362, micro-resistance testing and welding seam detection mechanism; 3621, micro-resistance testing mechanism; 3622, welding seam detection mechanism; 37, upper line connection platform; 38, reflow connection platform; 4, electric core upper line section; 41, electric core tray; 42, electric core buffer stock bin; 43, tray buffer stock bin; 44, double-motor driving mechanism; 45, electric core clamp; 46, tray clamp; 5, battery module lower line section; 51, module grabbing robot; 52, buffer rack; 511, module grabbing mechanical arm; 512, module grabbing clamp; 5121, first clamping driving member; 5122, first short side clamping plate; 5123, second short side clamping plate; 5124, long side clamping plate; 5125, clamping bottom plate; 6, battery module precursor; 61, electric core module; 62, end plate assembly. DETAILED DESCRIPTION

[0019] The application will be further described in conjunction with the specific embodiments and the accompanying drawings. Figure 1 A preferred embodiment of the application is given, as follows Figure 1As shown in the figure, a soft package power battery module intelligent processing production line, including the cell processing section 1, module stacking section 2, module welding section 3 arranged in the processing direction; the cell processing section 1 includes cutting and bending mechanism 15, dog ear folding mechanism 16 and foam mounting mechanism arranged in the processing direction; cutting and bending mechanism 15 is used for cutting and bending the length of the cell tab, dog ear folding mechanism 16 is used for folding the dog ear of the cell, foam mounting mechanism is used for foam mounting of the cell; module stacking section 2 includes battery module stacking device, battery module extrusion bundling device arranged in the processing direction; battery module stacking device is used for stacking the foam mounting of the cell, battery module extrusion bundling device is used for extruding and bundling the stacked cell into battery module; module welding section 3 includes busbar installation station, tab bending and rolling mechanism 34, tab welding mechanism 35 arranged in the processing direction; busbar installation station is used for installing busbar to battery module, tab bending and rolling mechanism 34 is used for bending the tab on the battery module and rolling the bent tab, tab welding mechanism 35 is used for welding the rolled tab and busbar. Through the processing production line, the automation of soft package battery module production process is realized, and the layout is reasonable.

[0020] Further, as shown in the figure, Figure 2 In another embodiment of the application, the module stacking section 2 includes a stacking turntable 21, a first stacking mechanism, a second stacking mechanism, the stacking turntable 21 is provided with a stacking table 211, the stacking turntable 21 can drive the stacking table 211 to rotate between the A surface and the B surface, the first stacking mechanism and the second stacking mechanism are respectively arranged close to the A surface and the B surface, when the stacking table 211 rotates to the A surface, it is used for cooperating with the first stacking mechanism to stack the cell and the large support to form the cell module, when the stacking table 211 rotates to the B surface, it is used for cooperating with the second stacking mechanism to stack the cell module and the end plate assembly to form the battery module precursor. The number of stacking tables 211 can be two, one of the stacking tables 211 faces the A surface, and the other of the stacking tables 211 faces the B surface, the two stacking tables 211 can work at the same time, so that the equipment can work continuously and ensure the production efficiency.

[0021] Further, as shown in the figure, Figure 2As shown in another embodiment of the present application, the first stacking mechanism includes the cell moving mechanism 22, the first turnover mechanism 23, the support moving mechanism 24, and the support feeding mechanism 29. The cell moving mechanism 22 is used to transfer the cells output by the cell processing section 1 to the stacking table 211. The first turnover mechanism 23 is used to adjust the front and back sides of the large support according to the stacking requirement. The support moving mechanism 24 is used to transfer the large support on the first turnover mechanism 23 to the stacking table 211. The second stacking mechanism includes the end plate assembly pre-assembly mechanism 25, the second turnover mechanism 26, and the end plate assembly moving mechanism 27. The end plate assembly pre-assembly mechanism 25 is used to assemble the end plate, the foam, and the small support into an end plate assembly. The second turnover mechanism 26 is used to adjust the front and back sides of the end plate assembly according to the stacking requirement. The end plate assembly moving mechanism 27 is used to transfer the end plate assembly on the second turnover mechanism 26 to the stacking table 211.

[0022] As shown in another embodiment of the present application, the cell moving mechanism 22 includes the first double-motor linear module 221 and the cell transfer table 222. The two motors of the first double-motor linear module 221 are respectively provided with the cell taking clamp 223 and the cell stacking clamp 224. The first double-motor linear module 221 is used to drive the cell taking clamp 223 to take the cell output by the cell processing section 1 to the cell transfer table 222, and then drive the cell stacking clamp 224 to take the cell on the cell transfer table 222 to the stacking table 211. Figure 3

[0023] As shown in another embodiment of the present application, the support moving mechanism 24 includes the second double-motor linear module 241 and the large support transfer table 242. The two motors of the second double-motor linear module 241 are respectively provided with the large support taking clamp 243 and the large support stacking clamp 244. The second double-motor linear module 241 is used to drive the large support taking clamp 243 to take the large support on the first turnover mechanism 23 to the large support transfer table 242, and then drive the large support stacking clamp 244 to take the large support on the large support transfer table 242 to the stacking table 211. Figure 4 As shown in another embodiment of the present application, the support moving mechanism 24 includes the second double-motor linear module 241 and the large support transfer table 242. The two motors of the second double-motor linear module 241 are respectively provided with the large support taking clamp 243 and the large support stacking clamp 244. The second double-motor linear module 241 is used to drive the large support taking clamp 243 to take the large support on the first turnover mechanism 23 to the large support transfer table 242, and then drive the large support stacking clamp 244 to take the large support on the large support transfer table 242 to the stacking table 211.

[0024] Figure 5 As shown in another embodiment of the present application, the support moving mechanism 24 includes the second double-motor linear module 241 and the large support transfer table 242. The two motors of the second double-motor linear module 241 are respectively provided with the large support taking clamp 243 and the large support stacking clamp 244. The second double-motor linear module 241 is used to drive the large support taking clamp 243 to take the large support on the first turnover mechanism 23 to the large support transfer table 242, and then drive the large support stacking clamp 244 to take the large support on the large support transfer table 242 to the stacking table 211.

[0025] As shown in another embodiment of the present application, the support moving mechanism 24 includes the second double-motor linear module 241 and the large support transfer table 242. The two motors of the second double-motor linear module 241 are respectively provided with the large support taking clamp 243 and the large support stacking clamp 244. The second double-motor linear module 241 is used to drive the large support taking clamp 243 to take the large support on the first turnover mechanism 23 to the large support transfer table 242, and then drive the large support stacking clamp 244 to take the large support on the large support transfer table 242 to the stacking table 211. Figure 6 ​​As shown, in another embodiment of the present invention, the end plate assembly pre-assembly mechanism 25 includes a feeding mechanism, a component picking mechanism 251, and an adhesive application mechanism 252. The component picking mechanism 251 picks up the end plate, foam, and small bracket from their respective hoppers and feeds them onto the feeding mechanism. The adhesive application mechanism 252 applies adhesive to the end plate, foam, and small bracket, so that the three are attached together to form the end plate assembly 62. The feeding mechanism can be a belt conveyor. The end plate assembly 62 is conveyed to the second flipping mechanism 26 through the feeding mechanism. The second flipping mechanism 26 adjusts the front and back of the end plate assembly 62 according to the stacking requirements. The end plate assembly moving mechanism 27 picks up the end plate assembly 62 from the second flipping mechanism 26 and moves it onto the stacking platform 211. The cell module 61 and the end plate assembly 62 are stacked on the stacking platform 211 to form the battery module front body 6.

[0026] Furthermore, such as Figure 7 As shown, in another embodiment of the present invention, the module stacking section 2 further includes a compression and bundling station 28, which includes a gripping robot 281 and a compression mechanism 282. The gripping robot 281 transfers the battery module precursor to the compression mechanism 282, and the compression mechanism 282 compresses the battery module precursor. After compression, steel strips are bundled to form the battery module. The bundling of the steel strips can be done manually. Figure 8 As shown, in another embodiment of the present invention, the extrusion mechanism 282 may include an upper extrusion block 2821, a lower pressure block 2822, and an extrusion cylinder 2823. The extrusion cylinder 2823 drives the upper extrusion block 2821 to move toward the lower pressure block 2822 to extrude the battery module front body 6 between the upper extrusion block 2821 and the lower pressure block 2822.

[0027] The structure of the precursor to the formed battery module is as follows Figure 43 As shown, it consists of a front endplate assembly 62, two middle cell modules 61, and a rear endplate assembly 62. Figure 43 In the middle, the first three parts, from front to back, are end plate, foam and small bracket, which together form the first end plate assembly 62; the last three parts, from back to front, are end plate, foam and small bracket, which together form the second end plate assembly 62; the battery cell, foam and large bracket are grouped into groups of three from front to back, which together form the battery cell module 61; the predecessor of a single battery module has at least two repeatedly stacked battery cell modules 61.

[0028] Furthermore, such as Figure 9 , Figure 10As shown, in another embodiment of the present application, the battery cell processing section 1 comprises a battery cell carrier 11, a first conveying mechanism 12, and sequentially arranged along the conveying direction of the first conveying mechanism 12 an upper line scanning code mechanism 13, an IV / OCV testing mechanism 14, an NG rejection mechanism, a cutting and bending mechanism 15, a dog ear folding mechanism 16, a flip pairing mechanism 17, and a foam attaching mechanism 18. The first conveying mechanism 12 is used to convey the battery cell carrier 11 to each processing mechanism in the battery cell processing section 1, and the battery cell carrier 11 is used to carry the battery cell. The process flow of the battery cell processing section 1 is as follows: after the battery cell is loaded, the battery cell is scanned by the upper line scanning code mechanism 13, and then the resistance and voltage of the battery cell are tested by the IV / OCV testing mechanism 14. After the testing is completed, the battery cell that is NG in scanning code or IV / OCV testing is taken out by the handling robot in the NG rejection mechanism and placed on the NG pull belt for buffering, and the qualified battery cell is continuously conveyed by the battery cell carrier 11 to the cutting and bending mechanism 15 for fixed-length cutting and bending of the battery cell tab. After the bending, the dog ear is folded inward by the dog ear folding mechanism 16. After the dog ear is folded, the battery cell is selectively flipped and paired according to the stacking sequence by the flip pairing mechanism 17. After the flip pairing, the foam is attached by the foam attaching mechanism 18. After the foam is attached, the battery cell is conveyed to the module stacking section 2 by the robot, and the empty battery cell carrier 11 is returned to the line head of the first conveying mechanism 12.

[0029] As shown in FIG. 1, Figure 11 In another embodiment of the present application, the first conveying mechanism 12 can be a magnetic levitation line, and the distance between each processing station of the entire magnetic levitation line is 300 mm. Compared with the traditional step-by-step line, the magnetic levitation line has the characteristics of high speed and high precision, so that the number of stations of each processing mechanism can be reduced by at least half and the length of the entire line machine is shortened by at least half under the same production rhythm. The magnetic levitation line is divided into two layers, the upper layer is the working layer, and the lower layer is the carrier return layer. An upper loading mechanism and a lower unloading mechanism are arranged at the line head and the line tail of the magnetic levitation line, respectively. The upper loading mechanism is used to lift the battery cell carrier 11 from the carrier return layer to the working layer, and the upper loading mechanism can be arranged to load two battery cell carriers 11 at a time. The lower unloading mechanism is used to lower the battery cell carrier 11 from the working layer to the carrier return layer, and the lower unloading mechanism can be arranged to return one battery cell carrier 11 at a time.

[0030] Further, as shown in FIG. 1, Figure 12 , Figure 13As shown, in another embodiment of the present invention, the battery cell carrier 11 includes a carrier plate 111 and two clamping assemblies. The two clamping assemblies are symmetrically arranged on both sides of the carrier plate 111. Each clamping assembly includes a mounting frame 112, a pressure block 113, an elastic element 114, a clamping block 115, and a guide rod 116. The mounting frame 112 is fixedly connected to the long side of the carrier plate 111. The guide rod is arranged perpendicular to the long side of the carrier plate. One end of the guide rod is connected to the top of the pressure block 113, and the other end passes through the side of the mounting frame 112 away from the carrier plate 111. The elastic element 114 is sleeved on the outside of the guide rod. The pressure block has an L-shaped structure, and its bottom is fixedly connected to the middle of the horizontal plate. The two ends of the horizontal plate are respectively connected to the bottom of the two clamping blocks 115. The top of the clamping blocks 115 is in contact with the long side of the battery cell.

[0031] Under normal conditions, the two clamping components automatically press the battery cell together under the spring force of the elastic element 114, ensuring that the battery cell remains in a fixed position even during high-speed movement, eliminating the need for secondary positioning and guaranteeing the accuracy of subsequent processing. The battery cell processing section 1 also includes an opening mechanism for opening the battery cell carrier 11. This opening mechanism is located at corresponding positions in the loading mechanism, unloading mechanism, IV / OCV testing mechanism 14, and flipping pairing mechanism 17. When it is necessary to open the battery cell carrier 11 to remove or insert a battery cell, the opening mechanism drives the clamping blocks 115 in the two clamping components to move in opposite directions. At this time, the elastic element 114 is compressed, and the battery cell carrier 11 is opened. Specifically, the elastic element 114 can be a spring. A pulley 117 is connected to the bottom of the clamping block 115. The opening mechanism includes a drive mechanism (not shown in the figure) and two wedge-shaped top blocks 118. One end of each wedge-shaped top block 118 has a chamfer, and the drive mechanism is used to push the two wedge-shaped top blocks 118 forward. During the jacking process of the drive mechanism, the inner side of the pulley 117 contacts the chamfered inclined surface and moves along the chamfered inclined surface from the end face of the wedge-shaped top block 118 towards the side face of the wedge-shaped top block 118. Due to the compression of the wedge-shaped top block 118, the clamping blocks 115 in the two clamping assemblies move in opposite directions, ultimately releasing the battery cell. Specifically, the drive mechanism can be a telescopic cylinder. To prevent overpressure damage to the battery cell, a crossbar 1151 is connected to the top of the clamping block 115 in one clamping assembly, and the crossbar 1151 contacts one long side of the battery cell. A floating rod 1152 is passed through the top of the clamping block 115 in the other clamping assembly, and the floating rod 1152 contacts the other long side of the battery cell. A limiting block is provided at the bottom of the carrier plate to limit the maximum clamping degree of the clamping block 115 and prevent excessive clamping from damaging the battery cell.

[0032] like Figure 14 As shown, in another embodiment of the present invention, the online scanning mechanism 13 includes a scanning dock bracket 131 and a scanning dock 132 disposed on the scanning dock bracket 131; the scanning dock 132 is used to scan the battery cell for subsequent production traceability.

[0033] like Figure 15 As shown, in another embodiment of the present invention, the IV / OCV testing mechanism 14 includes two IV / OCV testing components symmetrically arranged on both sides of the first conveying mechanism 12; the IV / OCV testing mechanism 14 includes a first motion mechanism 141 and IV test probes 142 and OCV test probes 143 disposed on the first motion mechanism 141. The IV test probe 142 completes the test by contacting the electrode tab and piercing the aluminum-plastic film with a blade, and the OCV test probe 143 completes the test by contacting the electrode tab and simultaneously measuring the surface temperature of the battery cell; specifically, the first motion mechanism 141 includes a first Y-direction linear drive module (Y-direction is the conveying direction perpendicular to the first conveying mechanism 12) and a first Z-direction drive member disposed on the Y-direction linear drive module, and the IV test probes 142 and OCV test probes 143 are both disposed on the movable end of the Z-direction drive member.

[0034] The cutting and bending mechanism 15 includes a tab cutting assembly and a tab bending assembly symmetrically arranged on both sides of the first conveying mechanism 12. The tab cutting assembly includes a cell pressing mechanism and a cutting blade cutting mechanism. The cutting blade cutting mechanism includes a cutting cylinder and a cutting blade. The cell pressing mechanism includes a pressing cylinder and a pressing block. The pressing cylinder drives the pressing block to press down to press the cell. After pressing, the cutting cylinder drives the cutting blade to cut the cell tab. The tab bending assembly includes a bending motion mechanism and a bending block. The bottom of the bending block is set to be arc-shaped. The bending motion mechanism drives the bottom of the bending block to roll along the tab in the required bending direction, thereby realizing the arc bending of the tab.

[0035] like Figure 16 to Figure 18As shown, in another embodiment of the present application, the dog ear folding mechanism 16 comprises two dog ear folding assemblies symmetrically arranged on both sides of the first conveying mechanism 12, the dog ear folding assembly comprising a second movement mechanism, a bottom supporting mechanism 161, and a dog ear folding lifting cylinder 162, the second movement mechanism comprising a second Y-direction linear drive module, a first Z-direction linear drive module arranged on the second Y-direction linear drive module, the bottom supporting mechanism 161 and the dog ear folding lifting cylinder 162 are arranged on the first Z-direction linear drive module, the dog ear folding lifting cylinder 162 is located above the bottom supporting mechanism 161, and the inner folding assembly and the outer folding assembly are arranged on the mover of the dog ear folding lifting cylinder 162, the outer folding assembly comprising a first driving assembly 163 and two outer folding blocks 164 symmetrically arranged, the inner side of the two outer folding blocks 164 is provided with an outer folding inclined surface 167 in the shape of a splayed end, the movable end of the first driving assembly 163 is connected with the two outer folding blocks 164, and the inner folding assembly comprises a second driving assembly 165 and two inner folding blocks 166 symmetrically arranged, one side of the inner folding block 166 is provided with a stop block, and the movable end of the second driving assembly 165 is connected with the two inner folding blocks 166. The working principle of the dog ear folding mechanism 16 is as follows: the cell carrier 11 is opened through the opening mechanism; the first Y-direction linear drive module advances, so that the dog ear folding mechanism 16 approaches the cell, and the bottom supporting mechanism 161 extends into the lower side of the cell; the first Z-direction linear drive module rises, so that the bottom supporting mechanism 161 supports the bottom of the cell and drives the cell to rise; the dog ear folding lifting cylinder 162 descends, so that the two outer folding blocks 164 and the two inner folding blocks 166 approach the cell; the first driving assembly 163 drives the two outer folding blocks 164 to move towards each other, and the outer folding inclined surface 167 presses the outer side of the dog ear of the cell, the second driving assembly 1616 drives the two inner folding blocks 166 to move away from each other, so that the stop block abuts against the inner side of the dog ear of the cell, and the outer folding block 164 and the inner folding block 166 cooperate to fold the dog ear of the cell in order to ensure that the bracket and the cell do not interfere when the cells are stacked.

[0036] As Figure 19As shown, in another embodiment of the present invention, the flip pairing mechanism 17 includes two flip pairing components symmetrically arranged on both sides of the first conveying mechanism 12. The flip pairing components include a second Z-axis linear drive module 171, an automatic gripper 172 disposed on the second Z-axis linear drive module 171, and a rotary drive member 173. The automatic gripper 172 includes a gripper base plate 1721, an upper gripper plate 1722, a lower gripper plate 1723, and a closing drive member 1724. The gripper base plate 1721 is disposed on the rotation axis of the rotary drive member 173. The upper gripper plate 1722 and the lower gripper plate 1723 are slidably disposed on the gripper base plate 1721, and the upper gripper plate 1722 and the lower gripper plate 1723 are disposed opposite to each other. The closing drive member 1724 is used to drive the upper gripper plate 1722 and the lower gripper plate 1723 to close. The working principle of the flipping and pairing mechanism 17 is as follows: the closing drive 1724 drives the upper clamping plate 1722 and the lower clamping plate 1723 to close together to clamp the short side of the battery cell. After clamping the battery cell, the rotation drive 173 drives the automatic gripper 172 to rotate 180 degrees to complete the flipping of the battery cell. Before flipping the battery cell, the second Z-axis linear drive module 171 first drives the automatic gripper 172 to rise to a suitable height to prevent the battery cell from interfering with the battery cell carrier 11 due to the subsequent flipping. After the battery cell flipping is completed, the automatic gripper 172 is driven to descend to its original position to put the battery cell back into the battery cell carrier 11.

[0037] Furthermore, such as Figure 20 As shown, in another embodiment of the present invention, the foam mounting mechanism 18 includes a battery cell adhesive spraying mechanism 181 and a foam feeding mechanism. The battery cell adhesive spraying mechanism 181 is used to spray adhesive onto the battery cell. The foam feeding mechanism includes a foam hopper 182, a material picking mechanism 183, and a mounting mechanism 184. The foam hopper 182 is used to store foam, and the material picking mechanism 183 is used to remove the foam from the foam hopper 182. The mounting mechanism 184 is used to mount the adhesive-sprayed battery cell onto the foam on the material picking mechanism 183.

[0038] The battery cell adhesive spraying mechanism 181 includes a third Y-axis linear drive module and an adhesive valve disposed on the third Y-axis linear drive module. The third Y-axis linear drive module spans above the first conveying mechanism 12. The adhesive valve is driven by the third Y-axis linear drive module to move while spraying adhesive onto the battery cell. A color mark sensor is provided on the adhesive valve to detect the adhesive spraying effect.

[0039] like Figure 21 to Figure 23As shown, in another embodiment of the present application, the foam material bin 182 is provided with a discharge port, and the material taking mechanism 183 comprises a material taking assembly and a transplanting assembly. The material taking assembly comprises an X-direction linear module 1831, a lifting driving member 1832 and a material taking block 1833. The mover of the X-direction linear module 1831 is connected with the lifting driving member 1832, and the movable end of the lifting driving member 1832 is connected with the material taking block 1833. The transplanting assembly comprises a Y-direction driving member 1834, a material taking fork 1835 and a Z-direction linear module 1836. The Z-direction linear module has a material taking position and a transplanting position. The Y-direction driving member 1834 is arranged on the mover of the Z-direction linear module 1836, and the movable end thereof is connected with one end of the material taking fork 1835. Figure 25 As shown, the other end of the material taking fork 1835 is provided with a slot 1839, and the material taking block 1833 and the material taking fork 1835 are respectively provided with a first suction disc 1837 and a second suction disc 1838.

[0040] The working principle of the material taking mechanism is as follows: the X-direction linear module 1831 drives the lifting driving member 1832 and the material taking block 1833 to move to the discharge port, the lifting driving member 1832 drives the material taking block 1833 to move to the position where the material taking block 1833 abuts against the foam in the foam material bin 182, after the first suction disc 1837 on the material taking block 1833 takes the foam, the lifting driving member 1832 drives the material taking block 1833 to move to the original position; the X-direction linear module 1831 drives the lifting driving member 1832 and the material taking block 1833 to move to the position where the material taking block 1833 is aligned with the material taking fork 1835; after the alignment, the Y-direction driving member 1834 drives the material taking fork 1835 to extend until the material taking block 1833 cooperates with the slot, after the second suction disc 1838 on the material taking fork 1835 takes the foam, the Y-direction driving member 1834 drives the material taking fork 1835 to retract until the material taking block 1833 completely exits the slot; after the material taking block 1833 completely exits the slot, the Z-direction linear module drives the Y-direction driving member 1834 and the material taking fork 1835 to rise from the material taking position to the transplanting position, so as to be connected with the mounting mechanism 184.

[0041] The discharge port is arranged at the bottom of the foam material bin 182, the X-direction linear module 1831 is located below the foam material bin 182, and a plurality of foam material bins 182 are arranged along the length direction of the X-direction linear module 1831; after one foam is taken out from each foam material bin 182, the remaining foams naturally fall and wait for taking, thereby reducing the foam position adjusting mechanism; the number of the foam material bins 182 is at least four, and each foam material bin 182 stores at least 120 foams, so that the material can be continuously supplied for at least 50 minutes; the discharge port is provided with a material taking baffle, the material taking baffle is opened during taking, and rebounds after the taking is completed, thereby preventing the foams from falling out.

[0042] As shown, Figure 24As shown, in another embodiment of the present invention, the foam mounting mechanism 18 further includes a foam centering mechanism 185. The foam centering mechanism 185 includes a third double-moving linear module 1851 and two baffles 1852. The third double-moving linear module 1851 is disposed on the moving part of the X-direction linear module 1831. The two moving parts of the third double-moving linear module 1851 are respectively connected to the two baffles 1852. The two baffles 1852 are slidably disposed on the moving part of the X-direction linear module 1831 and are symmetrically arranged on both sides of the material picking block 1833. The working principle of the foam centering mechanism 185 is as follows: after the foam is taken out, the third double-moving linear module 1851 drives the two moving parts to move towards each other, so that the two baffles 1852 move towards each other, so that the foam located between the two baffles 1852 is centered, thereby improving the accuracy of subsequent foam transplantation; the third double-moving linear module 1851 drives the two moving parts to move away from each other and return to their original positions.

[0043] like Figure 26 As shown, in another embodiment of the present invention, the mounting mechanism 184 includes a Y-axis linear module 1841, a mounting drive 1842, and a mounting gripper 1843. The Y-axis linear module 1841 spans above the conveying mechanism. The mounting drive 1842 is mounted on the moving part of the Y-axis linear module 1841. The movable end of the mounting drive 1842 is connected to the mounting gripper 1843. The Y-axis linear module 1841 and the mounting drive 1842 jointly drive the mounting gripper 1843 to mount the battery cell and foam. Specifically, the mounting drive 1842 is preferably a vertically lifting cylinder drive. The working principle of the mounting mechanism 184 is as follows: the battery cell carrier is opened by the clamping mechanism. The Y-axis linear module 1841 drives the mounting drive 1842 and mounting jaw 1843 to move above the cell carrier 11. The mounting drive 1842 drives the mounting jaw 1843 to descend so that the mounting jaw 1843 can grip the cell on the cell carrier 11. After gripping, the mounting drive 1842 drives the mounting jaw 1843 to rise and return to its original position. The Y-axis linear module 1841 drives the mounting drive 1842 and mounting jaw 1843 to move above the picking fork 1835. The mounting drive 1842 drives the mounting jaw 1843 to descend so that the cell on the mounting jaw 1843 is mounted together with the foam on the picking fork 1835.

[0044] Furthermore, such as Figure 27 , Figure 29As shown in the other embodiment of the present application, the module welding section 3 comprises a tooling fixture 31, a second conveying mechanism 32, a code marking and scanning mechanism 33, a busbar mounting station, a tab bending and rolling mechanism 34, a tab welding mechanism 35, a post-welding detection mechanism 36 arranged in sequence along the conveying direction of the second conveying mechanism 32, and the second conveying mechanism 32 is used to convey the tooling fixture 31 to each processing mechanism in the module welding section 3, the tooling fixture 31 is used to carry the battery module, and the tooling fixture 31 can rotate in the horizontal plane. The working process of the module welding section 3 is as follows: the battery module is grabbed by the manipulator to the tooling fixture 31 at the head of the second conveying mechanism 32, and the tooling fixture 31 is conveyed to each station by the second conveying mechanism 32; the code marking and scanning mechanism 33 is used for code marking and scanning at a station; the busbar support is mounted at the second station by the busbar mounting station, which can be manually mounted or mounted by a manipulator, and this embodiment does not limit this; when the busbar support is mounted, the busbar support on the front side is mounted first, then the tooling fixture 31 is rotated, the front and back sides of the battery module are adjusted, and then the busbar support on the back side is mounted; the tab bending and rolling mechanism 34 is used for tab bending and rolling at the third station; the tab welding mechanism 35 is used for tab welding at the fourth station; the post-welding detection mechanism 36 is used for micro-resistance detection and weld quality detection of the tab at the fifth station; the battery module is grabbed by the manipulator to the next process; and the empty tooling fixture 31 is returned to the head of the second conveying mechanism 32.

[0045] As shown in the other embodiment of the present application, Figure 28 As shown in the other embodiment of the present application, the module welding section 3 further comprises an uplink connection platform 37 and a return connection platform 38; the second conveying mechanism 32 is preferably a magnetic suspension line, comprising an upper working line 321 and a lower return line 322; the uplink connection platform 37 is arranged at the head of the upper working line 321 and the lower return line 322, and is used to move the tooling fixture 31 from the lower return line 322 to the upper working line 321; the return connection platform 38 is arranged at the tail of the upper working line 321 and the lower return line 322, and is used to lower the tooling fixture 31 from the upper working line 321 to the lower return line 322, so as to form the circulation of the tooling fixture 31.

[0046] Further, as shown in the other embodiment of the present application, Figure 29 to Figure 32As shown in the figure, in another embodiment of the application, the tooling jig 31 comprises a fixed base plate 311, a rotating assembly 312, a battery module clamping assembly 313, the battery module clamping assembly 313 is arranged on the upper surface of the fixed base plate 311, used for clamping the battery module and centering the battery module, the rotating assembly 312 comprises a rotating gear 3121, a rack 3122, a driving assembly, the rotating gear 3121 is arranged on the lower surface of the fixed base plate 311, the rotating gear 3121 is engaged with the rack 3122, the driving assembly is connected with the rack 3122, used for driving the rack 3122 to move to drive the rotating gear 3121 to rotate, and then drive the fixed base plate 311 to rotate on the horizontal plane. The tooling jig 31 is used to carry the battery module, and the tooling jig 31 is designed to be rotatable, after the busbar installation on the front surface of the battery module is completed, the front and back surfaces of the battery module are turned over by the tooling jig 31, and the busbar on the back surface of the battery module is installed by using the same set of busbar installation station, without the need to set two sets of busbar installation stations to meet the busbar installation requirements of the front and back surfaces of the battery module; the rotation angle is set to 180 degrees to realize the complete turning over of the front and back surfaces of the battery module.

[0047] As shown in the figure, Figure 32 As shown in the figure, in another embodiment of the application, the driving assembly comprises a linear module 3123, a first driving member 3124, the mover of the linear module 3123 is connected with the first driving member 3124, the movable end of the first driving member 3124 is connected with a plug-in block 3125, the rack 3122 is provided with a plug-in slot 3126, the first driving member 3124 is used to make the plug-in block 3125 and the plug-in slot 3126 be plugged in when the movable end of the first driving member 3124 is stretched out, the linear module 3123 is used to drive the rack 3122 to move to drive the rotating gear 3121 to rotate, and then drive the fixed base plate 311 to rotate on the horizontal plane; the first driving member 3124 is preferably a telescopic air cylinder.

[0048] As shown in the figure, Figure 32 As shown in the figure, in another embodiment of the application, the lower surface of the fixed base plate 311 is further provided with a clamping block 3111, and the module tooling jig 31 further comprises a lower mounting plate 314 and a rotating locking assembly, the lower mounting plate 314 is arranged below the rotating gear 3121, the rotating locking assembly comprises a second driving member 315, a moving block 316 and a first spring 317, one end of the moving block 316 is connected with the lower mounting plate 314 through the first spring 317, the other end of the moving block 316 can be clamped with the clamping block 3111, the movable end of the second driving member 315 is connected with the moving block 316, used for driving the moving block 316 to exit the clamping block 3111.

[0049] In the locked state, the moving block 316 engages with the locking block 3111 under the force of the first spring 317, locking the fixed base plate 311 and preventing the fixed base plate 311 and the battery module placed on the fixed base plate 311 from rotating due to accidental contact. When it is necessary to flip the battery module, the moving block 316 is driven out of the locking block by the second driving member 315 to unlock, and the fixed base plate 311 resumes free rotation. Specifically, the movable block 316 has a T-shaped structure. Its first end is connected to the lower mounting plate 314 via a first spring 317, its second end can engage with the locking block 3111, and its third end is equipped with a pulley. The movable end of the second driving member 315 is connected to a push block, which has a chamfer on the side near the pulley. When the movable end of the second driving member 315 extends, the pulley contacts the inclined surface of the chamfer and rolls along the inclined surface. Under the pressure of the inclined surface of the chamfer, the first spring 317 is compressed, and the movable block 316 exits the locking block 3111. To improve rotational smoothness, multiple ball bearings are provided between the lower mounting plate 314 and the fixed base plate 311. The ball bearings provide support for the rotation of the fixed base plate 311 while reducing the friction between the lower mounting plate 314 and the fixed base plate 311. There can be four ball bearings, which are respectively located at the four corners of the lower mounting plate 314.

[0050] Furthermore, such as Figure 32 As shown, in another embodiment of the present invention, the battery module clamping assembly 313 includes a rotary motor 3131, a threaded rod 3132, and two symmetrically arranged clamping blocks 3133, both of which are slidably mounted on a fixed base plate 311. The fixed base plate 311 may be provided with a slide rail, and the bottom of each clamping block 3133 may have a slider that cooperates with the slide rail. The bottom of each clamping block 3133 is connected to a threaded sleeve 3134, the threads of which have opposite directions. The outer wall of clamping block 2 is threadedly engaged with the inner walls of the two threaded sleeves 3134. The output shaft of the rotary motor 3131 is coaxially arranged with the threaded rod 3132, and the output shaft of the rotary motor 3131 is connected to one end of the threaded rod 3132. The rotary motor 3131 drives the threaded rod 3132 to rotate forward, thereby driving the two clamping blocks 3133 to move towards each other and clamp the battery module in the middle. Alternatively, the rotary motor 3131 drives the threaded rod 3132 to rotate in the opposite direction, thereby driving the two clamping blocks 3133 to move away from each other and release the battery module in the middle. Using the rotary motor 3131 as the sole power source, and through the transmission engagement between the threaded rod 3132 and the threaded sleeves 3134, it is possible to ensure that the movement of the two clamping blocks 3133 remains synchronized, thereby ensuring the alignment accuracy of the battery module. In addition, a floating block is provided on the clamping block 3133. The floating block is connected to the clamping block 3133 through a second spring. By setting the floating block and the second spring, over-clamping is prevented from causing deformation or damage to the battery module.

[0051] Furthermore, such asFigure 30 As shown in the other embodiment of the present application, the output shaft of the rotary motor 3131 is provided with a clamping joint 3135, one end of the threaded rod 3132 is provided with a clamping groove 3136, and the battery module clamping assembly 313 further comprises a power mechanism 3137, the output end of the power mechanism 3137 is connected with the rotating shaft of the rotary motor 3131. When the output end of the power mechanism 3137 is extended, the rotary motor 3131 is driven to move towards one end of the threaded rod 3132 until the clamping joint 3135 is clamped with the clamping groove 3136, at this time the rotary motor 3131 and the threaded rod 3132 are in a connected state, and can normally transmit power. When the output end of the power mechanism 3137 is retracted, the rotary motor 3131 is driven to move away from the threaded rod 3132 until the clamping joint 3135 exits the clamping groove 3136. The rotary motor 3131 and the threaded rod 3132 are arranged in a detachable connection, after clamping and centering the battery module, the rotary motor 3131 and the threaded rod 3132 are turned into a separated state, so that the rotary motor 3131 will not interfere with the subsequent other processing mechanisms

[0052] Further, as shown in the embodiment of the present application, the battery module clamping assembly 31 comprises a rotary motor 3131, a threaded rod 3132 and a battery module clamping mechanism 3133. The threaded rod 3132 is arranged on the rotary motor 3131, and the battery module clamping mechanism 3133 is arranged on the threaded rod 3132. Figure 34 Further, as shown in the embodiment of the present application, the battery module clamping assembly 31 comprises a rotary motor 3131, a threaded rod 3132 and a battery module clamping mechanism 3133. The threaded rod 3132 is arranged on the rotary motor 3131, and the battery module clamping mechanism 3133 is arranged on the threaded rod 3132.

[0053] Further, in another embodiment of the present application, the number of the tab bending and rolling mechanisms 34 is two groups, and the two groups of tab bending and rolling mechanisms 34 are symmetrically arranged on both sides of the second conveying mechanism 32 and are respectively used for bending and rolling the front tab and the back tab. Figure 35As shown, the tab bending and rolling mechanism 34 comprises a first three-axis motion mechanism 341 and two sets of bending and rolling mechanisms 342. The first three-axis motion mechanism 341 comprises a double-mover X-axis linear module 3411, one Y-axis linear module 3412 is arranged on each mover of the double-mover X-axis linear module 3411, and one Z-axis linear module 3413 is arranged on the mover of each Y-axis linear module 3412. The two sets of bending and rolling mechanisms 342 are symmetrically arranged on the movers of the two Z-axis linear modules 3413. The bending and rolling mechanism 342 comprises a bending mechanism 3421, a rolling mechanism 3422, a vision mechanism, a distance measuring mechanism, and a key mechanism missing detection mechanism. The working principle of the tab bending and rolling mechanism 34 is as follows: first, the vision mechanism and the distance measuring mechanism jointly detect the position of the battery module tab, and then feed back the position information to the first three-axis motion mechanism 341 after the detection is completed. Then, the first three-axis motion mechanism 341 carries the bending mechanism 3421 to process the tab, and the tab is first bent and then flattened. After the bending and flattening of all tabs of the battery module are completed, the first three-axis motion mechanism 341 carries the rolling mechanism 3422 to process the tab, so that the tab is flat.

[0054] As shown in the drawings, Figure 36 In another embodiment of the present application, the bending mechanism 3421 is a bending piece, and the rolling mechanism 3422 is a circular supporting roller. Through the action of the first three-axis motion mechanism 341, the bending piece is first moved a certain distance along the X-axis direction to coincide with the tab to be bent, and then the bending piece is moved a certain distance along the Y-axis direction to complete the bending work of the tab. After bending, through the action of the first three-axis motion mechanism 341, the circular supporting roller is first moved a certain distance along the X-axis direction to contact the tab, and then the circular supporting roller is moved a certain distance along the Y-axis direction to complete the tab flattening.

[0055] Further, as shown in the drawings, Figure 37As shown, in another embodiment of the present invention, the tab welding mechanism 35 includes a clamping mechanism 351 and a welding mechanism 352. The clamping mechanism 351 includes a second three-axis motion mechanism 3511 and two pressure head assemblies 3512. Specifically, the second three-axis motion mechanism 3511 has the same structure as the first three-axis motion mechanism 341. The two pressure head assemblies 3512 are respectively disposed on the movers of the two Z-axis linear modules 3413 of the second three-axis motion mechanism 3511. The welding mechanism 352 includes a welding motion mechanism 3521 and a galvanometer assembly 3522. The galvanometer assembly 3522 is disposed on the welding motion mechanism 3521 and is used to weld the tabs of the battery module. The working principle of the electrode welding mechanism 35 is as follows: the second three-axis motion mechanism 3511 carries a set of pressure head assemblies 3512 to press the electrode on one side of the battery module. After pressing, the welding motion mechanism 3521 carries the galvanometer assembly 3522 to weld the electrode. While waiting for the electrode on one side of the battery module to be welded, the second three-axis motion mechanism 3511 carries another set of pressure head assemblies 3512 to press the electrode on the other side of the battery module. The two sets of pressure head assemblies 3512 press alternately, so that the galvanometer assembly 3522 keeps processing without stopping.

[0056] Furthermore, such as Figure 38 As shown, in another embodiment of the present invention, the soft-pack battery module assembly and welding line further includes a post-weld inspection mechanism 36. The post-weld inspection mechanism 36 includes a third-axis motion mechanism 361 and two micro-resistance testing and weld inspection mechanisms 362. The third-axis motion mechanism 361 has the same structure as the first-axis motion mechanism 341. The two micro-resistance testing and weld inspection mechanisms 362 are symmetrically arranged on the movers of the two Z-axis linear modules 3413 of the third-axis motion mechanism 361. The micro-resistance testing and weld inspection mechanism 362 includes a micro-resistance testing mechanism 3621 and a weld inspection mechanism 3622. The micro-resistance testing mechanism 3621 is used for micro-resistance testing, and the weld inspection mechanism 3622 is used for weld quality inspection. The working principle of the post-weld inspection mechanism 36 is as follows: the third-axis motion mechanism 361 carries the micro-resistance testing mechanism 3621 and the weld inspection mechanism 3622 to perform micro-resistance testing and weld quality inspection on the battery module.

[0057] Furthermore, such as Figure 39 , Figure 40As shown, in another embodiment of the present invention, the intelligent processing production line for soft-pack power batteries further includes a cell loading section 4. The cell loading section 4 includes a cell tray 41, a cell buffer hopper 42, a tray buffer hopper 43, and a dual-movement drive mechanism 44. The cell buffer hopper 42 is used to store the cell tray 41 containing cells. The cell tray 41 containing cells is placed into the cell buffer hopper 42 manually or by an AGV. The two movers of the dual-movement drive mechanism 44 are respectively provided with a cell clamp 45 and a tray clamp 46. The cell clamp 45 is used to clamp the cells in the cell tray 41 and place the cells into the cell processing section 1 under the drive of the dual-movement drive mechanism 44. The cell clamp 45 is used to clamp the empty tray clamp 46 in the cell buffer hopper 42 and place the empty tray clamp 46 into the tray buffer hopper 43 under the drive of the dual-movement drive mechanism 44.

[0058] like Figure 41 , Figure 42 As shown, in another embodiment of the present invention, the intelligent processing production line for soft-pack power batteries further includes a battery module off-line section 5, including a module gripping robot 51 and a buffer rack 52; the module gripping robot 51 is used to grip the battery modules output from the module welding section 3 and place them into the buffer rack 52 to realize the off-line storage of battery modules; the module gripping robot 51 includes a module gripping robotic arm 511 and a module gripping fixture 512 disposed thereon; the module gripping fixture 512 includes a gripping base plate 5125 and a short-side clamping component and a long-side clamping component disposed thereon, the short-side clamping component includes a first clamping drive 5121 and a first short-side clamping plate 5122 and a second short-side clamping plate 5122 disposed opposite to each other. 123, the first short-side clamping plate 5122 is fixedly connected to the clamping base plate 5125, the second short-side clamping plate 5123 is slidably disposed on the clamping base plate 5125, the movable end of the first clamping drive member 5121 is connected to the second short-side clamping plate 5123, and is used to drive the second short-side clamping plate 5123 to move toward the first short-side clamping plate 5122; the long-side clamping assembly includes a second clamping drive member and two oppositely disposed long-side clamping plates 5124, the second clamping drive member is slidably disposed on the clamping base plate 5125, the second clamping drive member is drivenly connected to the two long-side clamping plates, and is used to drive the two long-side clamping plates to move toward each other; the battery module is clamped by the cooperation of the short-side clamping assembly and the long-side clamping assembly.

Claims

1. A smart processing production line for soft-pack power battery modules, characterized in that: The process includes a cell processing section (1), a module stacking section (2), and a module welding section (3) arranged sequentially along the processing direction. The battery cell processing section (1) includes a cutting and bending mechanism (15), a dog-ear folding mechanism (16), and a foam mounting mechanism arranged sequentially along the processing direction; the cutting and bending mechanism (15) is used to cut and bend the battery cell tabs to a fixed length, the dog-ear folding mechanism (16) is used to fold the battery cell into dog ears, and the foam mounting mechanism is used to mount the battery cell with foam. The module stacking section (2) includes a battery module stacking device and a battery module extrusion and bundling device arranged sequentially along the processing direction; the battery module stacking device is used to stack the cells that have completed foam mounting, and the battery module extrusion and bundling device is used to extrude and bundle the stacked cells into a battery module. The module welding section (3) includes a busbar installation station, a tab bending and rolling mechanism (34), and a tab welding mechanism (35) arranged sequentially along the processing direction; the busbar installation station is used to install a busbar onto the battery module, the tab bending and rolling mechanism (34) is used to bend the tabs on the battery module and roll the bent tabs flat, and the tab welding mechanism (35) is used to weld the rolled tabs to the busbar; The module stacking section (2) includes a stacking turntable (21), a first stacking mechanism, and a second stacking mechanism. The stacking turntable (21) is provided with a stacking platform (211). The stacking turntable (21) can drive the stacking platform (211) to rotate between surface A and surface B. The first stacking mechanism and the second stacking mechanism are respectively located close to surface A and surface B. When the stacking platform (211) rotates to surface A, it is used to cooperate with the first stacking mechanism to stack the battery cell and the large bracket to form a battery cell module. When the stacking platform (211) rotates to surface B, it is used to cooperate with the second stacking mechanism to stack the battery cell module and the end plate assembly to form the battery module precursor.

2. The intelligent processing production line for soft-pack power battery modules according to claim 1, characterized in that: The first stacking mechanism includes a cell moving mechanism (22), a first flipping mechanism (23), and a support moving mechanism (24). The cell moving mechanism is used to transfer the cells output from the cell processing section (1) to the stacking platform (211). The first flipping mechanism (23) is used to adjust the front and back of the large support. The support moving mechanism (24) is used to transfer the large support on the first flipping mechanism (23) to the stacking platform (211). The second stacking mechanism includes an end plate assembly pre-assembly mechanism (25), a second flipping mechanism (26), and an end plate assembly moving mechanism (27). The end plate assembly pre-assembly mechanism (25) is used to assemble the end plate, foam, and small bracket into an end plate assembly. The second flipping mechanism (26) is used to adjust the front and back of the end plate assembly. The end plate assembly moving mechanism (27) is used to transfer the end plate assembly on the second flipping mechanism (26) to the stacking platform (211).

3. The intelligent processing production line for soft-pack power battery modules according to claim 1, characterized in that: The cell processing section (1) also includes a flipping and pairing mechanism (17) located between the dog ear folding mechanism (16) and the foam mounting mechanism. The flipping and pairing mechanism (17) includes an automatic gripper (172) and a rotation drive (173). The automatic gripper (172) is used to grip the short side of the cell, and the rotation drive (173) is used to drive the automatic gripper (172) to rotate.

4. The intelligent processing production line for soft-pack power battery modules according to claim 1, characterized in that: The foam mounting mechanism (18) includes a battery cell adhesive spraying mechanism (181) and a foam feeding mechanism. The battery cell adhesive spraying mechanism (181) is used to spray adhesive onto the battery cell. The foam feeding mechanism includes a foam hopper (182), a material picking mechanism (183), and a mounting mechanism (184). The foam hopper (182) is used to store foam. The material picking mechanism (183) is used to take the foam out of the foam hopper (182). The mounting mechanism (184) is used to mount the glued battery cell to the foam on the material picking mechanism (183).

5. The intelligent processing production line for soft-pack power battery modules according to claim 3, characterized in that: The cell processing section (1) further includes a feeding mechanism, a discharging mechanism, an IV / OCV testing mechanism (14), and an NG rejection mechanism. The feeding mechanism and the discharging mechanism are respectively located at the beginning and end of the wire in the cell processing section (1). The IV / OCV testing mechanism (14) and the NG rejection mechanism are located between the feeding mechanism and the cutting and bending mechanism (15). The IV / OCV testing mechanism (14) is used to perform IV testing and OCV testing on the cells. The NG rejection mechanism is used to reject cells that fail the IV test and / or OCV test. The cell processing section (1) further includes a cell carrier (11), a first conveying mechanism (12), and a clamping mechanism; the cell carrier (11) is used to clamp the cell, the first conveying mechanism (12) is used to convey the cell carrier (11) along the processing direction, and the clamping mechanism is used to open the cell carrier (11). The clamping mechanism is provided at the corresponding positions of the loading mechanism, unloading mechanism, IV / OCV testing mechanism (14), and flipping pairing mechanism (17).

6. The intelligent processing production line for soft-pack power battery modules according to claim 1, characterized in that: The electrode tab bending and rolling mechanism (34) includes a first three-axis motion mechanism (341) and two sets of bending and rolling mechanisms (342) symmetrically arranged on the first three-axis motion mechanism (341). The bending and rolling mechanism (342) includes a bending mechanism (3421) and a rolling mechanism (3422). The bending mechanism (3421) is used to bend the electrode tab of the battery cell, and the rolling mechanism (3422) is used to roll the bent electrode tab of the battery cell.

7. The intelligent processing production line for soft-pack power battery modules according to claim 1, characterized in that: The module welding section (3) also includes a tooling fixture (31) and a second conveying mechanism (32). The second conveying mechanism (32) is used to convey the tooling fixture (31). The tooling fixture (31) includes a fixed base plate (311) and a rotating component. The fixed base plate (311) is used to mount the battery module. The rotating component is used to drive the fixed base plate (311) to rotate on the horizontal plane at the busbar installation station.

8. The intelligent processing production line for soft-pack power battery modules according to claim 7, characterized in that: The electrode welding mechanism (35) includes a clamping mechanism (351) and a welding mechanism (352). The clamping mechanism (351) includes a second three-axis motion mechanism (3511) and two pressure head assemblies (3512) symmetrically arranged on the second three-axis motion mechanism (3511). The second three-axis motion mechanism (3511) is used to drive the pressure head assembly (3512) to clamp the electrode of the battery module. The welding mechanism (352) includes a welding motion mechanism (3521) and a galvanometer assembly (3522) arranged on the welding motion mechanism (3521). The welding motion mechanism (3521) is used to drive the galvanometer assembly (3522) to weld the electrode of the battery module.

9. A method for intelligent processing and production of soft-pack power battery modules, characterized in that: The intelligent processing and production method for the soft-pack power battery module is based on the production line described in claim 1, and includes the following steps: The cutting and bending mechanism (15) is used to cut and bend the battery cell tabs to a fixed length. The battery cell is folded into a dog-ear shape using the folding dog-ear mechanism (16); The foam mounting mechanism is used to mount foam onto the battery cells. The battery cells that have completed foam mounting are stacked using a battery module stacking device. The stacked battery cells are compressed and bundled into battery modules using the battery module extrusion and bundling device. Busbars are installed on the battery modules via busbar installation stations; The tabs on the battery module are bent and the bent tabs are rolled flat by the tab bending and rolling mechanism (34). The flattened electrode and the busbar are welded by the electrode welding mechanism (35).

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