Intelligent processing production line and processing production method for soft package power battery module

Abstract

The invention belongs to the technical field of soft package battery modules, and particularly relates to a soft package power battery module intelligent processing production line and a processing production method.The processing production line comprises a battery cell processing section, a module stacking section and a module welding section; the battery cell processing section comprises a cutting and bending mechanism, a dog ear folding mechanism and a foam pasting mechanism which are sequentially arranged in the processing direction, and the module stacking section comprises a battery module stacking device and a battery module extruding and bundling device which are sequentially arranged in the processing direction; the module welding section comprises a busbar mounting station, a tab bending and rolling mechanism and a tab welding mechanism which are sequentially arranged in the machining direction. According to the invention, automation of the whole-line production process of the soft package battery module is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of soft-pack battery modules, and specifically relates to an intelligent processing production line and a processing production method for a soft-pack power battery module. Background Art

[0002] With the development of the new energy industry, electric vehicles are being used more and more widely, and soft-pack lithium-ion batteries are widely used in the market due to their advantages of light weight, high specific capacity, good safety performance, low internal resistance, and flexible design. How to reasonably plan and layout the processing production line of soft-pack battery modules, connect the various processing steps in series, and realize the automation of the full-line production process of soft-pack power battery modules to meet the growing production needs is the current main research direction. Summary of the invention

[0003] The purpose of the present invention is to provide a soft-pack power battery module intelligent processing production line and processing production method that can realize the automation of the entire production process in order to solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] In a first aspect, the present invention provides an intelligent processing production line for soft-pack power battery modules, the processing production line comprising a battery cell processing section, a module stacking section, and a module welding section arranged in sequence along a processing direction; the battery cell processing section comprises a cutting and bending mechanism, a dog-ear folding mechanism, and a foam mounting mechanism arranged in sequence along the processing direction; the cutting and bending mechanism is used to cut and bend the battery cell tabs to a fixed length, the dog-ear folding mechanism is used to fold dog ears on the battery cells, and the foam mounting mechanism is used to perform foam mounting on the battery cells; the module stacking section comprises a battery module stacking device, a dog-ear folding mechanism, and a foam mounting mechanism arranged in sequence along the processing direction A battery module extrusion and bundling device; the battery module stacking device is used to stack the battery cells that have completed foam pasting, and the battery module extrusion and bundling device is used to extrude and bundle the stacked battery cells into a battery module; the module welding section includes a bus installation station, a tab bending and rolling mechanism, and a tab welding mechanism that are arranged in sequence along the processing direction; the bus installation station is used to install the bus to the battery module, the tab bending and rolling mechanism is used to bend the tabs on the battery module and roll the bent tabs flat, and the tab welding mechanism is used to weld the rolled tabs to the bus.

[0006] The module stacking section includes a stacking turntable, a first stacking mechanism, and a second stacking mechanism. The stacking turntable is provided with a stacking platform, and the stacking turntable can drive the stacking platform 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 platform is rotated to the A surface, it is used to cooperate with the first stacking mechanism to stack the battery cells and the large bracket to form a battery cell module. When the stacking platform is rotated to the B surface, it 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 includes a battery cell moving mechanism, a first flipping mechanism, and a bracket moving mechanism. The battery cell transfer mechanism is used to transfer the battery cells output from the battery cell processing section to the stacking table. The first flipping mechanism is used to adjust the front and back sides of the large bracket. The bracket moving mechanism is used to transfer the large bracket on the first flipping mechanism to the stacking table. The second stacking mechanism includes an end plate assembly pre-installation mechanism, a second flipping mechanism, and an end plate assembly moving mechanism. The end plate assembly pre-installation mechanism is used to assemble the end plate, foam, and small bracket into an end plate assembly. The second flipping mechanism is used to adjust the front and back sides of the end plate assembly. The end plate assembly moving mechanism is used to transfer the end plate assembly on the second flipping mechanism to the stacking table.

[0008] The battery cell processing section also includes a flip matching mechanism located between the dog ear folding mechanism and the foam mounting mechanism, and the flip matching mechanism includes an automatic clamp and a rotating drive component. The automatic clamp is used to clamp the short side of the battery cell, and the rotating drive component is used to drive the automatic clamp to rotate.

[0009] The foam mounting mechanism includes 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 includes a foam silo, a material taking mechanism, and a mounting mechanism. The foam silo is used to store foam. The material taking mechanism is used to take the foam out of the foam silo. The mounting mechanism is used to mount the battery cell that has been sprayed with glue and the foam on the material taking mechanism.

[0010] The battery cell processing section also includes a feeding mechanism, a feeding mechanism, an IV / OCV testing mechanism, and an NG rejection mechanism. The feeding mechanism and the feeding mechanism are respectively arranged at the line head and the line 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 perform IV test and OCV test on the battery cell, and the NG rejection mechanism is used to reject the battery cell that fails the IV test and / or OCV test.

[0011] The battery cell processing section also includes a battery cell carrier, a first conveying mechanism, and a clamping mechanism; the battery cell carrier is used to clamp the battery cells, the first conveying mechanism is used to convey the battery cell carrier along the processing direction, and the clamping mechanism is used to open the battery cell carrier. The clamping mechanism is arranged at the corresponding positions of the loading mechanism, the unloading mechanism, the IV / OCV testing mechanism, and the flipping matching mechanism.

[0012] The tab bending and rolling mechanism includes a three-axis motion mechanism No. 1 and two sets of bending and rolling mechanisms symmetrically arranged on the three-axis motion mechanism No. 1. The bending and rolling mechanism includes a bending mechanism and a rolling mechanism. The bending mechanism is used to bend the tab of the battery cell, and the rolling mechanism is used to roll the bent tab of the battery cell.

[0013] The module welding section also includes a jig and a second conveying mechanism, wherein the second conveying mechanism is used to convey the jig. The jig includes a fixed base plate and a rotating assembly, wherein the fixed base plate is used to carry the battery module, and the rotating assembly is used to drive the fixed base plate to rotate on a horizontal plane at the bus installation station.

[0014] The tab welding mechanism includes a clamping mechanism and a welding mechanism, the clamping mechanism includes a No. 2 three-axis motion mechanism and two pressure head assemblies symmetrically arranged on the No. 2 three-axis motion mechanism, the No. 2 three-axis motion mechanism is used to drive the pressure head assembly to clamp the tab of the battery module, the welding mechanism includes a welding motion mechanism and a galvanometer assembly arranged on the welding motion mechanism, and the welding motion mechanism is used to drive the galvanometer assembly to weld the tab of the battery module.

[0015] In a second aspect, the present invention provides an intelligent processing and production method for a soft-pack power battery module, comprising: cutting and bending the cell tabs to a fixed length by the cutting and bending mechanism; folding the cell tabs by the dog-ear folding mechanism; foam pasting the cell tabs by the foam pasting mechanism; stacking the cell tabs that have completed foam pasting by a battery module stacking device; extruding and bundling the stacked cell tabs into a battery module by the battery module extrusion and bundling device; installing a bus bar on the battery module by a bus bar installation station; bending the tabs on the battery module by the tab bending and rolling mechanism and rolling the bent tabs flat; welding the flattened tabs to the bus bar by the tab welding mechanism.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a soft-pack power battery intelligent processing production line, including a cell processing section, a module stacking section, and a module welding section. The cell processing section includes a cutting and bending mechanism, a dog-ear folding mechanism, and a foam mounting mechanism arranged in sequence along the processing direction. The module stacking section includes a battery module stacking device and a battery module extrusion and bundling device arranged in sequence along the processing direction. The module welding section includes a busbar installation station, a tab bending and flattening mechanism, and a tab welding mechanism arranged in sequence along the processing direction. The processing production line can realize the automation of the entire production process of the soft-pack battery module, and the layout is reasonable to meet production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention. Figure 2 It is a structural schematic diagram of the module stacking section in the present invention. Figure 3 It is a structural schematic diagram of the battery cell moving mechanism in the present invention. Figure 4 It is a structural schematic diagram of the bracket feeding mechanism in the present invention. Figure 5 It is a structural schematic diagram of the support moving mechanism in the present invention. Figure 6 It is a structural schematic diagram of the end plate assembly mechanism of the present invention. Figure 7 It is a schematic diagram of the structure of the extrusion strapping station in the present invention. Figure 8 for Figure 7 Schematic diagram of the structure of the extrusion mechanism. Fig. 9 It is a top view of the battery cell processing section in the present invention. Fig.10 It is a structural schematic diagram of the battery cell processing section in the present invention. Fig.11 It is a schematic structural diagram of the first conveying mechanism in the present invention. Fig.12 It is a top view of the battery cell carrier in the present invention. Fig.13 It is a side view of the battery cell carrier in the present invention. Fig.14 It is a structural schematic diagram of the online code scanning mechanism in the present invention. Fig.15 It is a schematic diagram of the structure of the IV / OCV testing mechanism in the present invention. Fig.16 It is a structural schematic diagram of the dog-ear folding mechanism in the present invention. Fig.17 It is a side view of the folding dog ear mechanism of the present invention. Fig.18 for Fig.17 Schematic diagram of the structure of the middle inner fold block. Fig.19 It is a structural schematic diagram of the flip pairing mechanism in the present invention. Fig. 20 It is a structural schematic diagram of the foam mounting mechanism in the present invention. Fig.21 It is a structural schematic diagram of the material taking mechanism in the present invention. Fig. 22 It is a top view of the material taking mechanism in the present invention. Fig.23 It is a side view of the material taking mechanism in the present invention. Fig.24 It is a structural schematic diagram of the foam centering mechanism in the present invention. Fig.25for Fig.24 Schematic diagram of the structure of the middle material extraction fork. Fig.26 It is a structural schematic diagram of the mounting mechanism in the present invention. Fig. 27 It is a schematic diagram of the structure of the module stacking section in the present invention. Fig.28 It is a schematic structural diagram of the second conveying mechanism in the present invention. Fig.29 It is a schematic diagram of the structure of the tooling fixture in the present invention. Fig.30 It is the front view of the tooling fixture in the present invention. Fig.31 It is a side view of the tooling fixture in the present invention. Fig.32 It is a structural schematic diagram of the rotating assembly in the present invention. Fig.33 It is a schematic diagram of the structure of the rotating motor in the present invention. Fig.34 It is a structural schematic diagram of the code engraving and scanning mechanism in the present invention. Fig.35 It is a schematic structural diagram of the tab bending and rolling mechanism in the present invention. Fig.36 It is a schematic diagram of the structure of the bending mechanism and the rolling mechanism in the present invention. Fig.37 It is a structural schematic diagram of the tab welding mechanism in the present invention. Fig.38 It is a structural schematic diagram of the post-weld detection mechanism in the present invention.

[0018] Fig.39 It is a schematic diagram of the structure of the line segment on the battery cell in the present invention. Fig.40 for Fig.39 Schematic diagram of the structure of the double-actuator drive mechanism. Fig.41 It is a schematic diagram of the structure of the lower line segment of the battery module. Fig.42 This is a schematic diagram of the structure of the module grabbing fixture. Fig.43 This is an exploded view of the predecessor of the battery module.

[0019] In the above figure, 1. battery cell processing section; 11. battery cell carrier; 111. carrier plate; 112. mounting frame; 113. pressure block; 114. elastic member; 115. clamping block; 1151. cross bar; 1152. floating rod; 116. guide rod; 117. pulley; 118. wedge-shaped top block; 12. first conveying mechanism; 13. online code scanning mechanism; 131 scanning dock bracket; 132 scanning dock; 14. IV / OCV test mechanism; 141. first motion mechanism; 142. IV test probe; 143. OCV test probe; 15. cutting and bending mechanism; 16. dog-ear folding mechanism; 161. bottom support mechanism; 162. dog-ear folding lifting cylinder; 163. first drive assembly; 164. outer folding block; 165. second drive dynamic assembly; 166, inner folding block; 167, outer folding inclined plane; 17, flip matching mechanism; 171, second Z-direction linear drive module; 172, automatic clamping claw; 1721, clamping claw bottom plate; 1722, upper clamping plate; 1723, lower clamping plate; 1724, closing drive member; 173, rotating drive member; 18, foam mounting mechanism; 181, battery core spraying mechanism; 182, foam material bin; 183, material picking mechanism; 1831, X-direction linear module; 1832, lifting drive member; 1833, material picking block; 1834, Y-direction drive member; 1835, material picking fork; 1836, Z-direction linear module; 1837, first suction cup; 1838, second suction cup; 1839, slot; 184, mounting mechanism; 1841 , Y-axis linear module; 1842, mounting drive; 1843, mounting clamp; 185, foam centering mechanism; 1851, third double-acting linear module; 1852, baffle; 2, module stacking section; 21, stacking turntable; 22, battery cell moving mechanism; 221, first double-acting linear module; 222, battery cell transfer table; 223, battery cell material removal fixture; 224, battery cell stacking fixture; 23, first flipping mechanism; 24, bracket moving mechanism; 241, second double-acting linear module; 242, large bracket transfer table; 243, large bracket material removal fixture; 244, large bracket stacking fixture; 25, end plate assembly mechanism; 251, loose parts material removal mechanism; 252, glue coating mechanism; 26, second flipping mechanism; 27, End plate assembly moving mechanism; 28, extrusion strapping station; 281, grabbing robot; 282, extrusion mechanism; 2821, upper extrusion block; 2822, lower pressure block; 2823, extrusion cylinder; 29, bracket loading mechanism; 291, large bracket silo; 292, large bracket material taking fixture; 3, module welding section; 31, tooling fixture; 311, fixed bottom plate; 3111, clamping block; 312, rotating assembly; 3121, rotating gear; 3122, rack; 3123, linear module; 3124, first driving member; 3125, plug-in block; 3126, plug-in slot; 313, battery module clamping assembly; 3131, rotating motor; 3132, threaded rod; 3133, clamping block; 3134, threaded sleeve;3135, card connector; 3136, card slot; 314, lower mounting plate; 315, second driving member; 316, moving block; 317, first spring; 32, second conveying mechanism; 321, upper working line; 322, lower return line; 33, code engraving and scanning mechanism; 331, code engraving and scanning motion mechanism; 332, laser code engraving machine; 333, code scanning gun; 334, coaxial dust removal mechanism; 34, pole ear bending and flattening mechanism ; 341, No. 1 three-axis motion mechanism; 3411, double-actuator X-axis linear module; 3412, Y-axis linear module; 3413, Z-axis linear module; 342, bending and rolling mechanism; 3421, bending mechanism; 3422, rolling mechanism; 35, pole ear welding mechanism; 351, clamping mechanism; 3511, No. 2 three-axis motion mechanism; 3512, pressure head assembly; 352, welding mechanism; 3521, welding motion mechanism ; 3522, galvanometer assembly; 36, post-weld inspection mechanism; 361, No. 3 three-axis motion mechanism; 362, micro-resistance test and weld inspection mechanism; 3621, micro-resistance test mechanism; 3622, weld inspection mechanism; 37, online docking platform; 38, reflux docking platform; 4, battery cell online segment; 41, battery cell tray; 42, battery cell buffer silo; 43, tray buffer silo; 44, double-actuator drive mechanism; 45, Battery cell clamp; 46, tray clamp; 5, battery module lower line segment; 51, module grabbing robot; 52, cache rack; 511, module grabbing mechanical arm; 512, module grabbing clamp; 5121, first clamping drive; 5122, first short side clamp; 5123, second short side clamp; 5124, long side clamp; 5125, clamping bottom plate; 6, battery module predecessor; 61, battery cell module; 62, end plate assembly. ; DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with specific implementations and drawings. Figure 1 A preferred embodiment of the present invention is given as follows: Figure 1As shown, a soft-pack power battery module intelligent processing production line includes a battery cell processing section 1, a module stacking section 2, and a module welding section 3 which are sequentially arranged 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 which are sequentially arranged along the processing direction; the cutting and bending mechanism 15 is used to cut and bend the battery cell pole ears to a fixed length, the dog-ear folding mechanism 16 is used to fold the dog ears of the battery cell, and the foam mounting mechanism is used to perform foam mounting on the battery cell; the module stacking section 2 includes a battery module stacking device, a battery Module extrusion and bundling device; 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 battery modules; module welding section 3 includes a busbar installation station, a tab bending and flattening mechanism 34, and a tab welding mechanism 35 arranged in sequence along the processing direction; the busbar installation station is used to install the busbar on the battery module, the tab bending and flattening mechanism 34 is used to bend the tabs on the battery module and flatten the bent tabs, and the tab welding mechanism 35 is used to weld the flattened tabs to the busbars. Through this processing production line, the automation of the entire production process of soft-pack battery modules is realized, and the layout is reasonable.

[0021] Further, such as Figure 2 As shown, in another embodiment of the present invention, the module stacking section 2 includes a stacking turntable 21, a first stacking mechanism, and a second stacking mechanism. A stacking platform 211 is provided on the stacking turntable 21. The stacking turntable 21 can drive the stacking platform 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 platform 211 rotates to the A surface, 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 the B surface, it 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. The number of stacking platforms 211 can be two, when one stacking platform 211 faces the A surface, the other stacking platform 211 faces the B surface. The two stacking platforms 211 can operate simultaneously, so that the equipment can work uninterruptedly and ensure production efficiency.

[0022] Further, such as Figure 2As shown, in another embodiment of the present invention, the first stacking mechanism includes a battery cell moving mechanism 22, a first flipping mechanism 23, a bracket moving mechanism 24, and a bracket loading mechanism 29; the battery cell output from the battery cell processing section 1 is transferred to the stacking table 211 by the battery cell moving mechanism 22, the front and back sides of the large bracket are adjusted by the first flipping mechanism 23 according to the stacking requirements, and the large bracket on the first flipping mechanism 23 is transferred to the stacking table 211 by the bracket moving mechanism 24; the second stacking mechanism includes an end plate assembly pre-installation mechanism 25, a second flipping mechanism 26, and an end plate assembly moving mechanism 27; the end plate, foam, and small bracket are assembled into an end plate assembly by the end plate assembly pre-installation mechanism 25, the front and back sides of the end plate assembly are adjusted by the second flipping mechanism 2 according to the stacking requirements, and the end plate assembly on the second flipping mechanism 26 is transferred to the stacking table 211 by the end plate assembly moving mechanism 27;

[0023] like Figure 3 As shown, in another embodiment of the present invention, the battery cell moving mechanism 22 includes a first double-acting linear module 221 and a battery cell transfer table 222, and the two movers of the first double-acting linear module are respectively provided with a battery cell picking fixture 223 and a battery cell stacking fixture 224; the first double-acting linear module 221 first drives the battery cell picking fixture 223 to clamp the battery cell output from the battery cell processing section 1 to the battery cell transfer table 222, and then drives the battery cell stacking fixture 224 to clamp the battery cell on the battery cell transfer table 222 to the stacking table 211;

[0024] like Figure 4 As shown, in another embodiment of the present invention, the bracket loading mechanism 29 includes a large bracket bin 291 and a large bracket taking fixture 292 arranged at the bottom of the large bracket bin 291; the large bracket is taken out from the large bracket bin 291 by the large bracket taking fixture 292, and the front and back sides of the large bracket are adjusted according to the stacking requirements through the first turning mechanism 23;

[0025] like Figure 5 As shown, in another embodiment of the present invention, the bracket moving mechanism 24 includes a second double-motor linear module 241 and a large bracket turntable 242, and the two movers of the second double-motor linear module 241 are respectively provided with a large bracket picking clamp 243 and a large bracket stacking clamp 244; the second double-motor linear module 241 first drives the large bracket picking clamp 243 to clamp the large bracket on the first flipping mechanism 23 to the large bracket turntable 242, and then drives the large bracket stacking clamp 244 to clamp the large bracket on the large bracket turntable 242 to the stacking table 211; the battery cells and the large brackets are stacked on the stacking table 211 to form a battery cell module 61.

[0026] like Figure 6As shown, in another embodiment of the present invention, the end plate assembly pre-installation mechanism 25 includes a feeding mechanism, a loose parts picking mechanism 251, and a gluing mechanism 252; the end plate, foam, and small bracket are clamped from their respective silos to the feeding mechanism by the loose parts picking mechanism 251, and the gluing mechanism 252 glues the end plate, foam, and small bracket so that the three are mounted together to form an end plate assembly 62; the feeding mechanism can be a belt conveyor line; the end plate assembly 62 is conveyed to the second flipping mechanism 26 by the feeding mechanism, and the second flipping mechanism 26 adjusts the front and back sides of the end plate assembly 62 according to the stacking requirements, and the end plate assembly 62 on the second flipping mechanism 26 is clamped by the end plate assembly moving mechanism 27 and moved to the stacking table 211, and the battery cell module 61 and the end plate assembly 62 are stacked on the stacking table 211 to form a battery module precursor 6.

[0027] Further, such as Figure 7 As shown, in another embodiment of the present invention, the module stacking section 2 further includes an extrusion and bundling station 28, which includes a gripping robot 281 and an extrusion mechanism 282; the battery module precursor is transferred to the extrusion mechanism 282 by the gripping robot 281, and the battery module precursor is extruded by the extrusion mechanism 282; after extrusion, the steel strips are bundled to form a 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, and the upper extrusion block 2821 is driven by the extrusion cylinder 2823 to move toward the lower pressure block 2822 to squeeze the battery module precursor 6 between the upper extrusion block 2821 and the lower pressure block 2822.

[0028] The structure of the battery module precursor formed is as follows Fig.43 As shown, it is composed of a front end plate assembly 62, two middle battery cell modules 61, and a rear end plate assembly 62. Fig.43 In the figure, the first three parts from front to back are the end plate, foam, and small bracket, which together constitute the first end plate assembly 62; the last three parts from back to front are the end plate, foam, and small bracket, which together constitute the second end plate assembly 62; the battery cells, foam, and large bracket are grouped into three from front to back, which together constitute the battery cell module 61; a single battery module precursor has at least two repeatedly stacked battery cell modules 61.

[0029] Further, such as Fig. 9 , Fig.10As shown, in another embodiment of the present invention, the battery cell processing section 1 includes a battery cell carrier 11, a first conveying mechanism 12, and an online code scanning 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 flipping and matching mechanism 17, and a foam mounting mechanism 18, which are arranged in sequence along the conveying direction of the first conveying mechanism 12. The first conveying mechanism 12 is used to transport 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 battery cells. The process flow of the battery cell processing section 1 is as follows: after the battery cells are loaded, the online scanning mechanism 13 first scans the battery cells, and then the IV / OCV testing mechanism 14 tests the resistance and voltage of the battery cells. After the test is completed, the handling robot in the NG rejection mechanism takes away the battery cells that are NG in the scanning or NG in the IV / OCV test, and caches them on the NG pull belt. The qualified battery cells continue to be sent by the battery cell carrier 11 to the cutting and bending mechanism 15 for fixed-length cutting and bending of the battery cell ears. After bending, the dog-ear folding mechanism 16 folds the dog ears inward. After folding the dog ears, the flipping and matching mechanism 17 selectively flips and matches the battery cells according to the stacking order. After flipping and matching, the foam mounting mechanism 18 performs foam mounting. After foam mounting, the robot sends the battery cells to the module stacking section 2, and the empty battery cell carrier 2 is returned to the thread end of the first conveying mechanism 12.

[0030] like Fig.11 As shown, in another embodiment of the present invention, the first conveying mechanism 12 can be a magnetic levitation line, and the spacing between each processing station of the entire magnetic levitation line is 300mm; compared with the traditional step-feeding line, the magnetic levitation line has the characteristics of high speed and high precision, so that under the same production rhythm, the 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; the magnetic levitation line is divided into two layers, the upper layer is the working layer, and the lower layer is the carrier reflux layer, and a loading mechanism and a unloading mechanism are respectively arranged at the head and tail of the magnetic levitation line, and the loading mechanism is used to lift the battery cell carrier 11 from the carrier reflux layer to the working layer, and the loading mechanism can be set to load two battery cell carriers 11 at a time, and the unloading mechanism lowers the battery cell carrier 11 from the working layer to the carrier reflux layer, and the unloading mechanism can be set to reflux one battery cell carrier 11 at a time.

[0031] Further, such as Fig.12 , Fig.13As shown, in another embodiment of the present invention, the battery cell carrier 11 includes a carrier plate 111 and two clamping assemblies, and the two clamping assemblies are symmetrically arranged on both sides of the carrier plate 111, and the clamping assemblies include a mounting frame 112, a pressure block 113, an elastic member 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, and 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 one end thereof is penetrated through the side of the mounting frame 112 away from the carrier plate 111. The elastic member 233 is sleeved on the outside of the guide rod, and the pressure block is an L-shaped structure, and its bottom is fixedly connected to the middle part of the cross plate, and the two ends of the cross plate are respectively connected to the bottom of the two clamping blocks 115, and the top of the clamping block 115 is in contact with the long side of the battery cell.

[0032] Under normal conditions, the two clamping assemblies automatically clamp the battery cell under the spring force of the elastic member 114, so that the battery cell can maintain its position unchanged during high-speed movement, and no secondary positioning is required, so as to ensure the accuracy of subsequent processing technology. The battery cell processing section 1 also includes a clamping mechanism, which is used to open the battery cell carrier 11. The clamping mechanism is arranged at the corresponding positions of the loading mechanism, the unloading mechanism, the IV / OCV testing mechanism 14, and the flipping matching mechanism 17; when it is necessary to open the battery cell carrier and take out or clamp the battery cell therein, the clamping block 115 in the two clamping assemblies is driven to move in reverse by the clamping mechanism, at which time the elastic member 114 is compressed and the battery cell carrier 2 is opened. Specifically, the elastic member 233 can be a spring. The bottom of the clamping block 115 is connected to a pulley 117, and the clamping mechanism includes a driving mechanism (not shown in the figure) and two wedge-shaped top blocks 118. One end of the wedge-shaped top block 111 is provided with a chamfer, and the driving mechanism is used to push the two wedge-shaped top blocks 118. During the jacking process of the driving mechanism, the inner side of the pulley 117 contacts the chamfered inclined surface, and moves along the chamfered inclined surface near the end face of the wedge-shaped top block 118 toward the side of the wedge-shaped top block 118. Due to the squeezing of the wedge-shaped top block 118, the clamping blocks 115 in the two clamping assemblies move in opposite directions, and finally the battery cell is released. Specifically, the driving mechanism can be a telescopic cylinder. In order to prevent the battery cell from being damaged by overpressure, a cross bar 1151 is connected to the top of the clamping block 115 in one clamping assembly, and the cross bar 1151 contacts one long side of the battery cell. A floating rod 1152 is penetrated on 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 limit block is provided at the bottom of the carrier plate to limit the maximum compression of the clamping block 115 to prevent the battery cell from being damaged due to excessive compression.

[0033] like Fig.14 As shown, in another embodiment of the present invention, the online code scanning mechanism 13 includes a scanning terminal bracket 131 and a scanning terminal 132 arranged on the scanning terminal bracket 131; the battery cell code is scanned by the scanning terminal 132 to facilitate subsequent production traceability.

[0034] like Fig.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 an IV test probe 142 and an OCV test probe 143 arranged on the motion mechanism 141, the IV test probe 142 completes the test by contacting the pole ear with the probe and piercing the aluminum-plastic film with the blade, and the OCV test probe 143 completes the test by contacting the pole ear with the probe, and measures the surface temperature of the battery cell at the same time; specifically, the first motion mechanism 141 includes a first Y-direction linear drive module (the Y direction is perpendicular to the conveying direction of the first conveying mechanism 12), and a first Z-direction driving member arranged on the Y-direction linear drive module, and the IV test probe 142 and the OCV test probe 143 are both arranged on the active end of the Z-direction driving member.

[0035] The cutting and bending mechanism 15 includes a tab cutting assembly symmetrically arranged on both sides of the first conveying mechanism 12, and a tab bending assembly symmetrically arranged on both sides of the first conveying mechanism 12; the tab cutting assembly includes a battery cell pressing mechanism and a cutting knife cutting mechanism, the cutting knife cutting mechanism includes a cutting cylinder and a cutting knife, the battery cell pressing mechanism includes a pressing cylinder and a pressing block, the pressing cylinder drives the pressing block to press down to press the battery cell, after pressing, the cutting cylinder drives the cutting knife to cut the battery cell tab; the tab bending assembly includes a bending movement mechanism and a bending block, the bottom of the bending block is set to be in an arc shape, and the bending movement mechanism drives the bottom of the bending block to roll over the tab in the required bending direction, thereby realizing the arc bending of the tab;

[0036] like Figures 16 to 18As shown, in another embodiment of the present invention, the dog-folding ear mechanism 16 includes two dog-folding ear components symmetrically arranged on both sides of the first conveying mechanism 12, the dog-folding ear components include a second motion mechanism, a bottom supporting mechanism 161, and a dog-folding ear lifting cylinder 162, the second motion mechanism includes a second Y-direction linear drive module, and a first Z-direction linear drive module arranged on the second Y-direction linear drive module, the bottom supporting mechanism 161 and the dog-folding ear lifting cylinder 162 are both arranged on the first Z-direction linear drive module, and the dog-folding ear lifting cylinder 162 is located on the bottom supporting mechanism 1 61, an inner folding assembly and an outer folding assembly are arranged on the mover, the outer folding assembly includes a first driving assembly 163 and two symmetrically arranged outer folding blocks 164, the inner sides of the two outer folding blocks 164 are provided with an eight-shaped outer folding inclined surface 167, the movable end of the first driving assembly 163 is connected to the two outer folding blocks 164, the inner folding assembly includes a second driving assembly 165 and two symmetrically arranged inner folding blocks 166, a stop block is provided on one side of the inner folding block 166, and the movable end of the second driving assembly 165 is connected to the two inner folding blocks 166. The working principle of the dog-ear folding mechanism 16 is as follows: the battery carrier 11 is opened by the clamping mechanism; the first Y-direction linear drive module moves forward to make the dog-ear folding mechanism 16 close to the battery cell, and the bottom supporting mechanism 161 extends under the battery cell; the first Z-direction linear drive module rises to make the bottom supporting mechanism 161 support the bottom of the battery cell and drive the battery cell to rise; the dog-ear folding lifting cylinder 162 descends to make the two outer folding blocks 164 and the two inner folding blocks 166 close to the battery cell; the first drive component 163 drives the two outer folding blocks 164 to move toward each other, and presses the outer side of the dog ear 61 of the battery cell through the outer folding inclined surface 167, and the second drive component 1616 drives the two inner folding blocks 166 to move back to back, so that the block presses against the inner side of the dog ear 61 of the battery cell, and the outer folding block 164 and the inner folding block 166 cooperate to fold the battery cell pole ear neatly inward to complete the dog-ear folding, so as to ensure that the bracket and the battery cell will not interfere when the battery cells are stacked.

[0037] like Fig.19As shown, in another embodiment of the present invention, the flipping matching mechanism 17 includes two flipping matching components symmetrically arranged on both sides of the first conveying mechanism 12, and the flipping matching components include a second Z-direction linear drive module 171, an automatic clamping jaw 172 arranged on the second Z-direction linear drive module 171, and a rotating drive member 173. The automatic clamping jaw 172 includes a clamping jaw base plate 1721, an upper clamping plate 1722, a lower clamping plate 1723, and a closing drive member 1724. The clamping jaw base plate 1721 is arranged on the rotating axis of the rotating drive member 173, the upper clamping plate 1722 and the lower clamping plate 1723 are slidably arranged on the clamping jaw base plate 1721, and the upper clamping plate 1722 and the lower clamping plate 1723 are arranged opposite to each other, and the closing drive member 1724 is used to drive the upper clamping plate 1722 and the lower clamping plate 1723 to close. The working principle of the flipping pairing mechanism 17 is as follows: the closing driving member 1724 drives the upper clamping plate 1722 and the lower clamping plate 1723 to close to clamp the short side of the battery cell. After clamping the battery cell, the rotating driving member 173 drives the automatic clamping claw 172 to rotate 180 degrees to complete the flipping of the battery cell; before flipping the battery cell, the second Z-axis linear driving module 171 first drives the automatic clamping claw 172 to rise to a suitable height to prevent the subsequent battery cell from interfering with the battery cell carrier 11 due to flipping. After the battery cell is flipped, the automatic clamping claw 172 is driven to descend to its original position to put the battery cell back into the battery cell carrier 11.

[0038] Further, such as Fig. 20 As shown, in another embodiment of the present invention, the foam mounting mechanism 18 includes a battery cell glue spraying mechanism 181 and a foam feeding mechanism. The battery cell glue spraying mechanism 181 is used to spray glue on the battery cell. The foam feeding mechanism includes a foam material bin 182, a material taking mechanism 183, and a mounting mechanism 184. The foam material bin 182 is used to store foam. The material taking mechanism 183 is used to take out the foam in the foam material bin 182. The mounting mechanism 184 is used to mount the glue-sprayed battery cell with the foam on the material taking mechanism 183.

[0039] The battery cell glue spraying mechanism 181 includes a third Y-axis linear drive module and a glue valve arranged on the third Y-axis linear drive module. The third Y-axis linear drive module spans above the first conveying mechanism 12. The glue valve is driven by the third Y-axis linear drive module to spray glue on the battery cell while moving. A color code sensor is provided on the glue valve to detect the glue spraying effect.

[0040] like Figure 21 to Figure 23As shown, in another embodiment of the present invention, the foam bin 182 is provided with a discharge port, the material taking mechanism 183 includes a material taking component and a transplanting component, the material taking component includes an X-axis linear module 1831, a lifting drive member 1832, and a material taking block 1833, the mover of the X-axis linear module 1831 is connected to the lifting drive member 1832, the movable end of the lifting drive member 1832 is connected to the material taking block 1833, the transplanting component includes a Y-axis drive member 1834, a material taking fork 1835, and a Z-axis linear module 1836, the Z-axis linear module has a material taking position and a transplanting position, the Y-axis drive member 1834 is arranged on the mover of the Z-axis linear module 1836, and its movable end is connected to one end of the material taking fork 1835; as shown in FIG. Fig.25 As shown, a slot 1839 is provided at the other end of the material picking fork 1835, and a first suction cup 1837 and a second suction cup 1838 are provided on the material picking block 1833 and the material picking fork 1835 respectively.

[0041] The working principle of the material taking mechanism is as follows: the X-axis linear module 1831 drives the lifting drive member 1832 and the material taking block 1833 to move to the material outlet, the lifting drive member 1832 drives the material taking block 1833 to move until the material taking block 1833 presses against the foam in the foam bin 182, and after the first suction cup 1837 on the material taking block 1833 absorbs the foam, the lifting drive member 1832 drives the material taking block 1833 to move to the original position; the X-axis linear module 1831 drives the lifting drive member 1832 and the material taking block 1833 to move until the material taking block 1833 and the material taking block 1833 are in contact with each other. The material fork 1835 is aligned; after alignment, the Y-axis driving component 1834 drives the material picking fork 1835 to extend until the material picking block 1833 cooperates with the slot, and after the second suction cup 1838 on the material picking fork 1835 absorbs the foam, the Y-axis driving component 1834 drives the material picking fork 1835 to retract until the material picking block 1833 completely withdraws from the slot; after the material picking block 1833 completely withdraws from the slot, the Z-axis linear module drives the Y-axis driving component 1834 and the material picking fork 1835 to rise from the material picking position to the transfer position, so as to facilitate docking with the mounting mechanism 184.

[0042] The discharge port is opened at the bottom of the foam silo 182, the X-axis linear module 1831 is located below the foam silo 182, and multiple foam silos 182 are arranged along the length direction of the X-axis linear module 1831; after each foam is taken out from the foam silo 182, the remaining foam falls naturally and waits for material collection, reducing the foam position adjustment mechanism; the number of foam silos 182 is at least four, and each foam silo 182 buffers at least 120 pieces of foam, so that continuous feeding can be carried out for at least 50 minutes; a material collection baffle is provided at the discharge port, and the material collection baffle is opened when collecting materials, and the material collection baffle rebounds after the collection is completed to prevent the foam from falling out.

[0043] like Fig.24As shown, in another embodiment of the present invention, the foam mounting mechanism 18 also includes a foam centering mechanism 185, which includes a third double-moving linear module 1851 and two baffles 1852. The third double-moving linear module 1851 is arranged on the mover of the X-direction linear module 1831, and the two movers of the third double-moving linear module 1851 are respectively connected to the two baffles 1852, and the two baffles 1852 are slidably arranged on the mover of the X-direction linear module 1831, and are symmetrically arranged on both sides of the material taking block 1833; the working principle of the foam centering mechanism 185 is as follows: after taking out the foam, the third double-moving linear module 1851 drives the two movers to move toward each other, so that the two baffles 1852 move toward each other, so that the foam located between the two baffles 1852 is centered to improve the accuracy of subsequent foam transplanting; the third double-moving linear module 1851 drives the two movers to move back to their original positions.

[0044] like Fig.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 clamp 1843. The Y-axis linear module 1841 spans over the conveying mechanism, the mounting drive 1842 is arranged on the mover of the Y-axis linear module 1841, the movable end of the mounting drive 1842 is connected to the mounting clamp 1843, and the Y-axis linear module 1841 and the mounting drive 1842 jointly drive the mounting clamp 1843 to mount the battery cell and the foam; specifically, the mounting drive 1842 is preferably a cylinder drive that can be lifted vertically; the working principle of the mounting mechanism 184 is: the battery cell carrier is opened by the clamping mechanism Tool 11; the Y-axis linear module 1841 drives the mounting drive component 1842 and the mounting clamp 1843 to move to the top of the battery cell carrier 11, and the mounting drive component 1842 drives the mounting clamp 1843 to descend, so that the mounting clamp 1843 clamps the battery cell on the battery cell carrier 11; after clamping, the mounting drive component 1842 drives the mounting clamp 1843 to rise and return to the original position; the Y-axis linear module 1841 drives the mounting drive component 1842 and the mounting clamp 1843 to move to the top of the material picking fork 1835, and the mounting drive component 1842 drives the mounting clamp 1843 to descend, so that the battery cell on the mounting clamp 1843 and the foam on the material picking fork 1835 are mounted together.

[0045] Further, such as Fig. 27 , Fig.29As shown, in another embodiment of the present invention, the module welding section 3 includes a jig 31, a second conveying mechanism 32, and a code engraving and scanning mechanism 33, a bus installation station, a tab bending and rolling mechanism 34, a tab welding mechanism 35, and a post-weld inspection mechanism 36 which are arranged in sequence along the conveying direction of the second conveying mechanism 32. The second conveying mechanism 32 is used to transport the jig 31 to each processing mechanism in the module welding section 3. The jig 31 is used to carry the battery module, and the jig 31 can rotate on a horizontal plane. The working process of the module welding section 3 is as follows: the battery module is grabbed by the robot to the jig 31 at the end of the second conveying mechanism 32, and the second conveying mechanism 32 conveys the jig 31 to each workstation; the code engraving and scanning mechanism 33 performs code engraving and scanning at the first workstation; the bus bracket is installed by the bus installation station at the second workstation, which can be installed manually or by the robot, and this embodiment does not limit this; when installing the bus bracket, the front bus bracket is installed first, and then the jig 31 is rotated, and after the front and back sides of the battery module are turned, the bus bracket on the back side is installed; at the third workstation, the tab bending and rolling mechanism 34 performs tab bending and rolling; at the fourth workstation, the tab welding mechanism 35 performs tab welding processing; at the fifth workstation, the post-weld detection mechanism 36 performs tab micro-resistance detection and weld quality detection; the robot grabs the battery module to the next process; the empty jig 31 is returned to the end of the second conveying mechanism 32.

[0046] like Fig.28 As shown, in another embodiment of the present invention, the module welding section 3 also includes an upper line docking platform 37 and a reflux docking platform 38; the second conveying mechanism 32 is preferably a magnetic levitation line, including an upper working line 321 and a lower reflux line 322; the upper line docking platform 37 is arranged at the line ends of the upper working line 321 and the lower reflux line 322, and is used to move the tooling fixture 31 from the lower reflux line 322 to the upper working line 321; the reflux docking platform 38 is arranged at the line ends of the upper working line 321 and the lower reflux line 322, and is used to lower the tooling fixture 31 from the upper working line 321 to the lower reflux line 322 to form a tooling fixture 31 circulation.

[0047] Further, such as Figure 29 to Figure 32As shown, in another embodiment of the present invention, the tooling fixture 31 includes a fixed base plate 311, a rotating assembly 312, and a battery module clamping assembly 313. The battery module clamping assembly 313 is arranged on the upper surface of the fixed base plate 311, and is used to clamp the battery module and center the battery module. The rotating assembly 312 includes a rotating gear 3121, a rack 3122, and a driving assembly. The rotating gear 3121 is arranged on the lower surface of the fixed base plate 311, and the rotating gear 3121 is meshed with the rack 3122. The driving assembly is connected to the rack 3122, and is used to drive the rack 3122 to move to drive the rotating gear 3121 to rotate, thereby driving the fixed base plate 311 to rotate on a horizontal plane. The battery module is carried by using a jig 31, and the jig 31 is of rotatable design. After completing the installation of the bus on the front side of the battery module, the front and back sides of the battery module are turned by using the jig 31, and the same set of bus installation stations are used to continue to install the bus on the back side of the battery module. There is no need to set up two sets of bus installation stations to meet the bus installation requirements on the front and back sides of the battery module; the rotation angle is set to 180 degrees to achieve complete rotation of the front and back sides of the battery module.

[0048] like Fig.32 As shown, in another embodiment of the present invention, the driving assembly includes a linear module 3123 and a first driving member 3124. The mover of the linear module 3123 is connected to the first driving member 3124. The movable end of the first driving member 3124 is connected to a plug-in block 3125. The rack 3122 is provided with a plug-in slot 3126. The first driving member 3124 is used to connect the plug-in block 3125 with the plug-in slot 3126 when the movable end of the first driving member 3124 is extended. 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 cylinder.

[0049] like Fig.32 As shown, in another embodiment of the present invention, a clamping block 3111 is further provided on the lower surface of the fixed base plate 311, and the module fixture 31 also includes a lower mounting plate 314 and a rotation locking assembly. The lower mounting plate 314 is arranged below the rotating gear 3121, and the rotation locking assembly includes a second driving member 315, a moving block 316, and a first spring 317. One end of the moving block 316 is connected to the lower mounting plate 314 through the first spring 317, and 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 to the moving block 316 for driving the moving block 316 to exit the clamping block 3111.

[0050] In the locked state, the moving block 316 is engaged with the clamping block 3111 under the action of the first spring 317, locking the fixed base plate 311 to prevent the fixed base plate 311 and the battery module placed on the fixed base plate 311 from rotating due to accidental touch; when the battery module needs to be flipped, the moving block 316 is driven by the second driving member 315 to exit the clamping block to achieve unlocking, and the fixed base plate 311 resumes free rotation. Specifically, the moving block 316 is a T-shaped structure, the first end of which is connected to the lower mounting plate 314 through the first spring 317, the second end of which can be engaged with the clamping block 3111, and the third end of which is provided with a pulley. The movable end of the second driving member 315 is connected with a push block, and a chamfer is provided on the side of the push block close to the pulley. When the movable end of the second driving member 315 is extended, the pulley contacts the chamfered inclined surface, and the pulley rolls along the chamfered inclined surface. Under the pressure of the chamfered inclined surface, the first spring 317 is squeezed, and the moving block 316 withdraws from the clamping block 311. In order to improve the smoothness of rotation, a plurality of balls are arranged between the lower mounting plate 314 and the fixed bottom plate 311, and the balls provide support for the rotation of the fixed bottom plate 311 while reducing the friction between the lower mounting plate 314 and the fixed bottom plate 311; the number of balls can be four, which are respectively arranged at the four corners of the lower mounting plate 314.

[0051] Further, such as Fig.32 As shown, in another embodiment of the present invention, the battery module clamping assembly 313 includes a rotating motor 3131, a threaded rod 3132, and two symmetrically arranged clamping blocks 3133, and the two clamping blocks 3133 are both slidably arranged on the fixed base plate 311; it can be that a slide rail is provided on the fixed base plate 311, and a slider matching the slide rail is provided at the bottom of the clamping block 3133; the bottoms of the two clamping blocks 3133 are both connected to a threaded sleeve 3134, and the threads of the two threaded sleeves 3134 are opposite in direction, and the threaded rod 313 The outer wall of the rotating motor 3131 and the inner wall of the two threaded sleeves 3134 are matched by threads, the output shaft of the rotating motor 3131 is coaxially arranged with the threaded rod 3132, and the output shaft of the rotating motor 3131 is connected with one end of the threaded rod 3132, and the rotating motor 3131 is used to drive the threaded rod 3132 to rotate forward to drive the two clamping blocks 3133 to move toward each other and clamp the battery module in the middle, or drive the threaded rod 3132 to rotate in the opposite direction to drive the two clamping blocks 3133 to move backward and loosen the battery module in the middle. The rotating motor 3131 is used as the only power source, and the threaded rod 3132 and the threaded sleeve 3134 are driven and matched, so that the movement of the two clamping blocks 3133 can always be kept synchronous, thereby ensuring the centering accuracy of the battery module; in addition, a floating block is provided on the clamping block 3133, and the floating block is connected to the clamping block 3133 through a second spring. By setting the floating block and the second spring, the battery module can be prevented from being deformed or damaged due to excessive clamping.

[0052] Further, such as Fig.30 As shown, in another embodiment of the present invention, 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 includes a power mechanism 3137, and the output end of the power mechanism 3137 is connected to the rotary 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 toward 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 transmit power normally. When the output end of the power mechanism 3137 is retracted, the rotary motor 3131 is driven to move in a direction away from the threaded rod 3132 until the clamping joint 3135 exits the clamping groove 3136. The rotating motor 3131 and the threaded rod 3132 are set to be detachably connected. After clamping and centering the battery module, the rotating motor 3131 and the threaded rod 3132 are turned into a separated state, so that the rotating motor 3131 will not interfere with other subsequent processing mechanisms.

[0053] Further, such as Fig.34 As shown, the code engraving and scanning mechanism 33 includes a code engraving and scanning motion mechanism 331 and a laser code engraving machine 332, a code scanning gun 333 and a coaxial dust removal mechanism 334 arranged on the code engraving and scanning motion mechanism 331. Specifically, the code engraving and scanning motion mechanism 331 is a three-dimensional motion mechanism, including an X-axis cantilever, a Y-axis cantilever arranged on the X-axis cantilever, and a Z-axis cantilever arranged on the Y-axis cantilever. The laser code engraving machine 332, the code scanning gun 333 and the coaxial dust removal mechanism 334 are all arranged on the Z-axis cantilever. The working principle of the code engraving and scanning mechanism 33 is as follows: when working, the code engraving and scanning motion mechanism 331 carries the laser code engraving machine 332, the code scanning gun 333 and the coaxial dust removal mechanism 334 to the product engraving position, the laser code engraving machine 332 performs laser engraving on the product bracket, and the coaxial dust removal mechanism 334 synchronously performs processing dust treatment on the laser processing; then the code scanning gun 333 scans the code, reads it and binds it.

[0054] Furthermore, in another embodiment of the present invention, 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 used to bend and roll the front tab and the back tab respectively; Fig.35As shown, the ear bending and rolling mechanism 34 includes a three-axis motion mechanism No. 1 341 and two sets of bending and rolling mechanisms 342. The three-axis motion mechanism No. 1 341 includes a double-moving X-axis linear module 3411. Each of the two movers of the double-moving X-axis linear module 3411 is provided with a Y-axis linear module 3412. Each mover of the Y-axis linear module 3412 is provided with a Z-axis linear module 3413. 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 includes a bending mechanism 3421, a rolling mechanism 3422, a visual 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: the visual mechanism and the distance measuring mechanism jointly detect the position of the tab of the battery module first, and after the detection is completed, the position information is fed back to the No. 1 three-axis motion mechanism 341, and then the No. 1 three-axis motion mechanism 341 carries the bending mechanism 3421 to process the tab, first bending and then flattening. After completing the bending and flattening of all the tabs of the battery module, the No. 1 three-axis motion mechanism 341 carries the rolling mechanism 3422 to process the tab to make the tab flat.

[0055] like Fig.36 As shown, in another embodiment of the present invention, the bending mechanism 3421 is a bending sheet, and the rolling mechanism 3422 is a circular roller; through the action of the No. 1 three-axis motion mechanism 341, the bending sheet is first driven to move a certain distance along the X-axis direction, so that the bending sheet coincides with the pole ear to be bent, and then the bending sheet is driven to move a certain distance along the Y-axis direction to complete the bending work of the pole ear; after bending, through the action of the No. 1 three-axis motion mechanism 341, the circular roller is first driven to move a certain distance along the X-axis direction, so that the circular roller contacts the pole ear, and then the circular roller is driven to move a certain distance along the Y-axis direction, thereby completing the flattening of the pole ear.

[0056] Further, such as Fig.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 No. 2 three-axis motion mechanism 3511 and two pressure head assemblies 3512, specifically, the No. 2 three-axis motion mechanism 3511 has the same structure as the No. 1 three-axis motion mechanism 341, the two pressure head assemblies 3512 are respectively arranged on the movers of the two Z-axis linear modules 3413 of the No. 2 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 arranged on the welding motion mechanism 3521, and is used to weld the tabs of the battery module. The working principle of the tab welding mechanism 35 is as follows: the No. 2 three-axis motion mechanism 3511 carries a set of pressure head assemblies 3512 to press the tabs on one side of the battery module. After pressing, the welding motion mechanism 3521 carries the galvanometer assembly 3522 to weld the tabs; while waiting for the tabs on one side of the battery module to be welded, the No. 2 three-axis motion mechanism 3511 carries another set of pressure head assemblies 3512 to press the tabs on the other side of the battery module. The two sets of pressure head assemblies 3512 are pressed alternately, so that the galvanometer assembly 3522 keeps processing without stopping.

[0057] Further, such as Fig.38 As shown, in another embodiment of the present invention, the soft pack battery module assembly welding line also includes a post-weld detection mechanism 36, which includes a No. 3 three-axis motion mechanism 361, two micro-resistance testing and weld detection mechanisms 362, the No. 3 three-axis motion mechanism 361 has the same structure as the No. 1 three-axis motion mechanism 341, and the two micro-resistance testing and weld detection mechanisms 362 are symmetrically arranged on the movers of the two Z-axis linear modules 3413 of the No. 3 three-axis motion mechanism 361; the micro-resistance testing and weld detection mechanism 362 includes a micro-resistance testing mechanism 3621 and a weld detection mechanism 3622, the micro-resistance testing mechanism 3621 is used for micro-resistance detection, and the weld detection mechanism 3622 is used for weld quality detection. The working principle of the post-weld detection mechanism 36 is: the No. 3 three-axis motion mechanism 361 carries the micro-resistance testing mechanism 3621 and the weld detection mechanism 3622 to perform micro-resistance detection and weld quality detection on the battery module.

[0058] Further, such as Fig.39 , Fig.40As shown, in another embodiment of the present invention, the intelligent processing production line for soft-pack power batteries also includes a battery cell upper line segment 4, the battery cell upper line segment 4 includes a battery cell tray 41, a battery cell buffer silo 42, a tray buffer silo 43, and a dual-actuator driving mechanism 44. The battery cell buffer silo 42 is used to store the battery cell tray 41 loaded with batteries, and the battery cell tray 41 loaded with batteries is placed into the battery cell buffer silo 42 manually or by an AGV vehicle; the two movers of the dual-actuator driving mechanism 44 are respectively provided with a battery cell clamp 45 and a tray clamp 46, the battery cell clamp 45 is used to clamp the battery cell in the battery cell tray 41, and place the battery cell into the battery cell processing section 1 under the drive of the dual-actuator driving mechanism 44; the battery cell clamp 45 is used to clamp the empty tray clamp 46 in the battery cell buffer silo 42, and place the empty tray clamp 46 into the tray buffer silo 43 under the drive of the dual-actuator driving mechanism 44.

[0059] like Fig.41 , Fig.42 As shown, in another embodiment of the present invention, the intelligent processing production line of soft-pack power batteries also includes a battery module offline segment 5, including a module grabbing robot 51 and a cache rack 52; the module grabbing robot 51 is used to grab the battery module output by the module welding segment 3 to the cache rack 52 to realize offline storage of the battery module; the module grabbing robot 51 includes a module grabbing mechanical arm 511 and a module grabbing fixture 512 arranged thereon; the module grabbing fixture 512 includes a clamping bottom plate 5125 and a short side clamping assembly and a long side clamping assembly arranged thereon, and the short side clamping assembly includes a first clamping driving member 5121 and a first short side clamping plate 5122 and a second short side clamping plate 5125 arranged relatively. 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 set on the clamping base plate 5125, the movable end of the first clamping driving 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 driving member and two long side clamping plates 5124 arranged opposite to each other, the second clamping driving member is slidably set on the clamping base plate 5125, and the second clamping driving member is transmission-connected with 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 cooperating with the short side clamping assembly and the long side clamping assembly.

Claims

1. A soft-pack power battery module intelligent processing production line, characterized by: The method comprises sequentially arranging a cell processing section (1), a module stacking section (2), and a module welding section (3) along a processing direction; The battery cell processing section (1) comprises a cutting and bending mechanism (15), a dog ear folding mechanism (16) and a foam mounting mechanism which are sequentially arranged along a processing direction; the cutting and bending mechanism (15) is used to cut and bend the battery cell pole ears to a fixed length, the dog ear folding mechanism (16) is used to fold the dog ears of the battery cell, and the foam mounting mechanism is used to perform foam mounting on the battery cell; The module stacking section (2) comprises a battery module stacking device and a battery module extrusion and bundling device which are sequentially arranged along the processing direction; the battery module stacking device is used to stack the battery cells that have completed foam pasting, and the battery module extrusion and bundling device is used to extrude and bundle the stacked battery cells into a battery module; The module welding section (3) comprises a busbar installation station, a tab bending and flattening mechanism (34), and a tab welding mechanism (35) which are arranged in sequence along a processing direction; the busbar installation station is used to install a busbar on a battery module, the tab bending and flattening mechanism (34) is used to bend the tabs on the battery module and flatten the bent tabs, and the tab welding mechanism (35) is used to weld the flattened tabs to the busbar.

2. The intelligent processing production line for soft-pack power battery modules according to claim 1 is characterized in that: The module stacking section (2) comprises a stacking turntable (21), a first stacking mechanism, and a second stacking mechanism. A stacking platform (211) is provided on the stacking turntable (21). The stacking turntable (21) can drive the stacking platform (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 platform (211) rotates to the A surface, 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 the B surface, it 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.

3. The intelligent processing production line for soft-pack power battery modules according to claim 2 is characterized in that: The first stacking mechanism comprises a cell moving mechanism (22), a first flipping mechanism (23), and a bracket moving mechanism (24); the cell moving mechanism is used to transfer the cell 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 sides of the large bracket; and the bracket moving mechanism (24) is used to transfer the large bracket on the first flipping mechanism (23) to the stacking platform (211); The second stacking mechanism comprises an end plate assembly pre-installation mechanism (25), a second flipping mechanism (26), and an end plate assembly moving mechanism (27); the end plate assembly pre-installation 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 sides of the end plate assembly; and 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).

4. The intelligent processing production line for soft-pack power battery modules according to claim 1, characterized in that: The battery cell processing section (1) further comprises a flipping pairing mechanism (17) located between the dog-ear folding mechanism (16) and the foam mounting mechanism, the flipping pairing mechanism (17) comprising an automatic clamping claw (172) and a rotating drive member (173), the automatic clamping claw (172) being used to clamp the short side of the battery cell, and the rotating drive member (173) being used to drive the automatic clamping claw (172) to rotate.

5. The intelligent processing production line for soft-pack power battery modules according to claim 1 is characterized in that: The foam mounting mechanism (18) comprises a battery core glue spraying mechanism (181) and a foam feeding mechanism. The battery core glue spraying mechanism (181) is used to spray glue on the battery core. The foam feeding mechanism comprises a foam material bin (182), a material taking mechanism (183), and a mounting mechanism (184). The foam material bin (182) is used to store foam. The material taking mechanism (183) is used to take the foam out of the foam material bin (182). The mounting mechanism (184) is used to mount the battery core that has been sprayed with glue on the foam on the material taking mechanism (183).

6. The intelligent processing production line for soft-pack power battery modules according to claim 4 is characterized in that: The cell processing section (1) further comprises a loading mechanism, a unloading mechanism, an IV / OCV testing mechanism (14), and an NG rejection mechanism. The loading mechanism and the unloading mechanism are respectively arranged at the thread head and thread tail of the cell processing section (1). The IV / OCV testing mechanism (14) and the NG rejection mechanism are arranged between the loading 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 cell, and the NG rejection mechanism is used to reject the cell that fails the IV test and / or OCV test. The battery cell processing section (1) further comprises a battery cell carrier (11), a first conveying mechanism (12), and a clamping mechanism; the battery cell carrier (11) is used for clamping the battery cell, the first conveying mechanism (12) is used for conveying the battery cell carrier (11) along a processing direction, the clamping mechanism is used for opening the battery cell carrier (11), and the clamping mechanism is arranged at corresponding positions of the loading mechanism, the unloading mechanism, the IV / OCV testing mechanism (14), and the flipping and pairing mechanism (17).

7. The intelligent processing production line for soft-pack power battery modules according to claim 1, characterized in that: The tab bending and rolling mechanism (34) comprises 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) comprises a bending mechanism (3421) and a rolling mechanism (3422); the bending mechanism (3421) is used to bend the tab of the battery cell, and the rolling mechanism (3422) is used to roll the bent tab of the battery cell.

8. The intelligent processing production line for soft-pack power battery modules according to claim 1, characterized in that: The module welding section (3) further comprises a jig (31) and a second conveying mechanism (32), wherein the second conveying mechanism (32) is used to convey the jig (31), and the jig (31) comprises a fixed base plate (311) and a rotating assembly, wherein the fixed base plate (311) is used to carry a battery module, and the rotating assembly is used to drive the fixed base plate (311) to rotate on a horizontal plane at a busbar installation station.

9. The intelligent processing production line for soft-pack power battery modules according to claim 8, characterized in that: The tab welding mechanism (35) comprises a clamping mechanism (351) and a welding mechanism (352); the clamping mechanism (351) comprises a No. 2 three-axis motion mechanism (3511) and two pressing head assemblies (3512) symmetrically arranged on the No. 2 three-axis motion mechanism (3511); the No. 2 three-axis motion mechanism (3511) is used to drive the pressing head assembly (3512) to clamp the tab of the battery module; the welding mechanism 352 comprises 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 tab of the battery module.

10. The method for intelligent processing and production of a soft-pack power battery module according to claim 1, characterized in that: The intelligent processing and production method of soft-pack power batteries comprises the following steps: The cell tabs are cut to a fixed length and bent by the cutting and bending mechanism (15); Performing dog-ear folding on the battery cell by means of the dog-ear folding mechanism (16); Performing foam mounting on the battery cell by using the foam mounting mechanism; The battery cells that have completed foam mounting are stacked by a battery module stacking device; The stacked battery cells are extruded and bundled into a battery module by the battery module extrusion and bundling device; Installing busbars on battery modules through busbar installation stations; The tabs on the battery module are bent by the tab bending and rolling mechanism (34), and the bent tabs are rolled flat; The flattened pole lug and busbar are welded by the pole lug welding mechanism (35).

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