CN119133555A

CN119133555A - A soft-pack power battery module intelligent processing production line and processing production method

Info

Publication number: CN119133555A
Application number: CN202411262491.7A
Authority: CN
Inventors: 冉昌林; 吴文志; 李国强
Original assignee: Wuhan Yifi Laser Corp Ltd
Current assignee: Wuhan Yifi Laser Corp Ltd
Priority date: 2024-09-10
Filing date: 2024-09-10
Publication date: 2024-12-13
Anticipated expiration: 2044-09-10
Also published as: CN119133555B

Abstract

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 soft-pack power battery modules. The processing production line includes 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 sequentially arranged along the processing direction. The module stacking section includes a battery module stacking device and a battery module extrusion and bundling device sequentially arranged along the processing direction. The module welding section includes a busbar installation station, a tab bending and flattening mechanism, and a tab welding mechanism sequentially arranged along the processing direction. The present invention realizes the automation of the full-line production process of soft-pack battery modules.

Description

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

Technical Field

The invention belongs to the technical field of soft-package battery modules, and particularly relates to an intelligent processing production line and a processing production method of a soft-package power battery module.

Background

Along with the development of new energy industry, the application of electric automobiles is more and more widespread, and the soft-package lithium ion battery is widely used in the market due to the advantages of light weight, high specific capacity, good safety performance, small internal resistance, flexible design and the like. How to reasonably plan and layout the processing production line of the soft package battery cell module, and connect each processing procedure in series, thereby realizing the automation of the whole line production process of the soft package power battery module, meeting the increasing production demand, and being the main research direction at present.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an intelligent processing production line and a processing production method for a soft package power battery module, which can realize the automation of a full-line production process.

In order to achieve the above object, the technical scheme of the present invention is as follows:

The invention provides an intelligent processing production line of a soft package power battery module, which comprises a battery cell processing section, a module stacking section and a module welding section which are sequentially arranged along the processing direction, wherein the battery cell processing section comprises a cutting and bending mechanism, a dog-ear folding mechanism and a foam mounting mechanism which are sequentially arranged along the processing direction, the cutting and bending mechanism is used for cutting and bending a battery cell electrode lug to a fixed length, the dog-ear folding mechanism is used for folding a dog ear of the battery cell, the foam mounting mechanism is used for foam mounting the battery cell, the module stacking section comprises a battery module stacking device and a battery module extrusion binding device which are sequentially arranged along the processing direction, the battery module stacking device is used for stacking the battery cell after foam mounting, the battery module extrusion binding device is used for extruding and binding the stacked battery cell into a battery module, the module welding section comprises a busbar mounting station, a pole ear folding rolling mechanism and a pole ear welding mechanism which are sequentially arranged along the processing direction, and the busbar mounting station is used for mounting the busbar to the battery module, and the pole ear folding mechanism is used for rolling the pole ear of the battery module after the pole ear is folded and is used for welding the pole ear rolling mechanism.

The module stacking section comprises a stacking turntable, a first stacking mechanism and a second stacking mechanism, wherein a stacking table is arranged on the stacking turntable and can drive the stacking table to rotate between an A face and a B face, the first stacking mechanism and the second stacking mechanism are respectively close to the A face and the B face, when the stacking table rotates to the A face, the stacking table is used for being matched with the first stacking mechanism to stack the battery core and the large support to form a battery core module, and when the stacking table rotates to the B face, the stacking table is used for being matched with the second stacking mechanism to stack the battery core module and the end plate assembly to form a battery module precursor.

The first stacking mechanism comprises a battery core moving mechanism, a first turnover mechanism and a support moving mechanism, wherein the battery core moving mechanism is used for moving the battery core output by the battery core processing section to the stacking table, the first turnover mechanism is used for adjusting the front and back sides of the large support, the support moving mechanism is used for moving the large support on the first turnover mechanism to the stacking table, the second stacking mechanism comprises an end plate assembly preassembling mechanism, a second turnover mechanism and an end plate assembly moving mechanism, the end plate assembly preassembling mechanism is used for assembling end plates, foam and small supports into end plate assemblies, the second turnover mechanism is used for adjusting the front and back sides of the end plate assemblies, and the end plate assembly moving mechanism is used for moving the end plate assemblies on the second turnover mechanism to the stacking table.

The battery cell processing section further comprises a turnover pairing mechanism located between the dog-ear folding mechanism and the foam pasting mechanism, the turnover pairing mechanism comprises an automatic clamping jaw and a rotary driving piece, the automatic clamping jaw is used for clamping the short side of the battery cell, and the rotary driving piece is used for driving the automatic clamping jaw to rotate.

The foam mounting mechanism comprises a cell glue spraying mechanism and a foam feeding mechanism, wherein the cell glue spraying mechanism is used for spraying glue to a cell, the foam feeding mechanism comprises a foam bin, a material taking mechanism and a mounting mechanism, the foam bin is used for storing foam, the material taking mechanism is used for taking the foam out of the foam bin, and the mounting mechanism is used for mounting the sprayed glue cell and the foam on the material taking mechanism.

The battery cell processing section further comprises a feeding mechanism, a discharging mechanism, an IV/OCV testing mechanism and an NG removing mechanism, wherein the feeding mechanism and the discharging mechanism are respectively arranged at the thread end and the thread tail of the battery cell processing section, the IV/OCV testing mechanism and the NG removing mechanism are arranged between the feeding mechanism and the cutting and bending mechanism, the IV/OCV testing mechanism is used for carrying out IV testing and OCV testing on the battery cells, and the NG removing mechanism is used for removing battery cells which are unqualified in the IV testing and/or the OCV testing;

The battery cell processing section further comprises a battery cell carrier, a first conveying mechanism and a clamping opening mechanism, wherein the battery cell carrier is used for clamping a battery cell, the first conveying mechanism is used for conveying the battery cell carrier along the machining direction, the clamping opening mechanism is used for opening the battery cell carrier, and the clamping opening mechanism is arranged at positions corresponding to the feeding mechanism, the discharging mechanism, the IV/OCV testing mechanism and the overturning pairing mechanism.

The electrode lug bending and leveling mechanism comprises a first triaxial movement mechanism and two groups of bending and leveling mechanisms symmetrically arranged on the first triaxial movement mechanism, the bending and leveling mechanisms comprise bending mechanisms and leveling mechanisms, the bending mechanisms are used for bending the electrode lugs of the battery cells, and the leveling mechanisms are used for leveling the electrode lugs of the battery cells after bending.

The module welding section further comprises a tool jig and a second conveying mechanism, the second conveying mechanism is used for conveying the tool jig, the tool 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 driving the fixed bottom plate to rotate on a horizontal plane at a busbar installation station.

The electrode lug welding mechanism comprises a pressing mechanism and a welding mechanism, the pressing mechanism comprises a second triaxial movement mechanism and two pressing head assemblies symmetrically arranged on the second triaxial movement mechanism, the second triaxial movement mechanism is used for driving the pressing head assemblies to press electrode lugs of the battery module, the welding mechanism comprises a welding movement mechanism and a vibrating mirror assembly arranged on the welding movement mechanism, and the welding movement mechanism is used for driving the vibrating mirror assembly to weld the electrode lugs of the battery module.

The invention provides an intelligent processing production method of a soft package power battery module, which comprises the steps of cutting and bending a battery cell tab by a fixed length through a cutting and bending mechanism, bending the battery cell through a dog tab bending mechanism, foam-attaching the battery cell through a foam-attaching mechanism, stacking the battery cell which is completed in foam-attaching through a battery module stacking device, extruding and bundling the stacked battery cell into a battery module through a battery module extruding and bundling device, installing a busbar on the battery module through a busbar installation station, bending the tab on the battery module through the tab bending and rolling mechanism, rolling the bent tab, and welding the rolled tab and the busbar through the tab welding mechanism.

Compared with the prior art, the intelligent processing production line for the soft-package power battery has the beneficial effects that the intelligent processing production line comprises a battery cell processing section, a module stacking section and a module welding section, wherein the battery cell processing section comprises a cutting and bending mechanism, a dog-ear folding mechanism and a foam mounting mechanism which are sequentially arranged along the 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 tab bending and rolling mechanism and a tab welding mechanism which are sequentially arranged along the processing direction. The full-line production process of the soft package battery module can be automatically realized through the processing production line, and the soft package battery module is reasonable in layout and can meet production requirements.

Drawings

Fig. 1 is a schematic structural view of the present invention. FIG. 2 is a schematic diagram of a module stacking section according to the present invention. Fig. 3 is a schematic structural diagram of a cell moving mechanism in the present invention. Fig. 4 is a schematic structural diagram of a bracket feeding mechanism in the invention. Fig. 5 is a schematic structural view of a bracket moving mechanism in the present invention. Fig. 6 is a schematic structural view of an assembling mechanism of an end plate assembly according to the present invention. Fig. 7 is a schematic view of the structure of the squeeze lashing station of the present invention. Fig. 8 is a schematic view of the pressing mechanism of fig. 7. Fig. 9 is a top view of a cell processing section according to the present invention. Fig. 10 is a schematic structural diagram of a cell processing section in the present invention. Fig. 11 is a schematic structural view of a first conveying mechanism in the present invention. Fig. 12 is a top view of a cell carrier according to the present invention. Fig. 13 is a side view of a cell carrier according to the present invention. Fig. 14 is a schematic structural diagram of an upper line code scanning mechanism in the present invention. FIG. 15 is a schematic diagram of an IV/OCV test mechanism in accordance with the present invention. Fig. 16 is a schematic structural view of a dog-ear folding mechanism in the present invention. Fig. 17 is a side view of the dog-ear folding mechanism of the present invention. Fig. 18 is a schematic view of the structure of the inward folding block in fig. 17. Fig. 19 is a schematic structural view of the flip-over mating mechanism in the present invention. Fig. 20 is a schematic structural view of a foam mounting mechanism according to the present invention. Fig. 21 is a schematic structural view of the take-off mechanism of the present invention. Fig. 22 is a top view of the take off mechanism of the present invention. Fig. 23 is a side view of the take off mechanism of the present invention. Fig. 24 is a schematic structural view of a foam centering mechanism in the present invention. Fig. 25 is a schematic view of the structure of the take-out crotch of fig. 24. Fig. 26 is a schematic structural view of the mounting mechanism in the present invention. FIG. 27 is a schematic view of a module stacking section according to the present invention. Fig. 28 is a schematic structural view of a second conveying mechanism in the present invention. Fig. 29 is a schematic structural diagram of the tooling fixture in the present invention. Fig. 30 is a front view of the tooling fixture of the present invention. Fig. 31 is a side view of the tooling fixture of the present invention. Fig. 32 is a schematic view of a rotary assembly according to the present invention. Fig. 33 is a schematic structural view of a rotary electric machine in the present invention. FIG. 34 is a schematic diagram of a code scanning mechanism according to the present invention. Fig. 35 is a schematic structural view of a tab bending and leveling mechanism according to the present invention. Fig. 36 is a schematic structural view of a bending mechanism and a rolling mechanism in the present invention. Fig. 37 is a schematic structural view of a tab welding mechanism according to the present invention. Fig. 38 is a schematic structural view of a post-weld inspection mechanism according to the present invention.

Fig. 39 is a schematic diagram of a line segment on a cell according to the present invention. Fig. 40 is a schematic view of the dual-motor drive mechanism of fig. 39. Fig. 41 is a schematic view of the structure of the lower line of the battery module. Fig. 42 is a schematic structural view of the module gripping jig. Fig. 43 is an exploded view of a battery module precursor.

In the upper diagram, 1, a battery cell processing section, 11, a battery cell carrier, 111, a carrier plate, 112, a mounting rack, 113, a pressing block, 114, an elastic piece, 115, a clamping block, 1151, a cross rod, 1152, a floating rod, 116, a guide rod, 117, a pulley, 118, a wedge-shaped top block, 12, a first conveying mechanism, 13, an upper line code scanning mechanism, 131, a code scanning head bracket, 132, a code scanning head, 14, an IV/OCV testing mechanism, 141, a first moving mechanism, 142, an IV testing probe, 143, an OCV testing probe, 15, a cutting and bending mechanism, 16, a dog ear folding mechanism, 161, a lower line code scanning head and a lower line code scanning mechanism, The lifting cylinder for folding dog ears comprises a bottom supporting mechanism, a 162-folding dog ear lifting cylinder, a 163-first driving component, a 164-folding block, a 165-second driving component, a 166-folding block, a 167-folding inclined plane, a 17-folding pairing mechanism, a 171-second Z-direction linear driving module, a 172-automatic clamping jaw, a 1721-clamping jaw bottom plate, a 1722-upper clamping plate, a 1723-lower clamping plate, a 1724-folding driving piece, a 173-rotating driving piece, a 18-foaming cotton attaching mechanism, a 181-cell glue spraying mechanism, a 182-foaming cotton bin, a 183-taking mechanism, a 1831-X-direction linear module, a 1832-X-direction linear driving module, Lifting driving member, 1833, material taking block, 1834, Y-direction driving member, 1835, material taking crotch, 1836, Z-direction linear module, 1837, first sucker, 1838, second sucker, 1839, slot, 184, mounting mechanism, 1841, Y-direction linear module, 1842, mounting driving member, 1843, mounting clamping jaw, 185, foam centering mechanism, 1851, third double-movable-sub linear module, 1852, baffle, 2, module stacking section, 21, stacking turntable, 22, cell moving mechanism, 221, first double-movable-sub linear module, 222, cell middle turntable, 223, cell picking clamp, 224, cell stacking clamp, 23, first turnover mechanism, 24, bracket moving mechanism, 241, second double-active-cell linear module, 242, large bracket middle rotary table, 243, large bracket picking clamp, 244, large bracket stacking clamp, 25, end plate assembly assembling mechanism, 251, bulk picking mechanism, 252, gluing mechanism, 26, second turnover mechanism, 27, end plate assembly moving mechanism, 28, extrusion binding station, 281, grabbing robot, 282, extrusion mechanism, 2821, upper extrusion block, 2822, lower extrusion block, 2823, extrusion cylinder, 29, Bracket feeding mechanism, 291, large bracket bin, 292, large bracket taking clamp, 3, module welding section, 31, tool fixture, 311, fixed bottom plate, 3111, clamping block, 312, rotating assembly, 3121, rotating gear, 3122, rack, 3123, linear module, 3124, first driving member, 3125, inserting block, 3126, inserting groove, 313, battery module clamping assembly, 3131, rotating motor, 3132, threaded rod, 3133, clamping block, 3134, threaded sleeve, 3135, clamping head, 3136, clamping groove, 314, The lower mounting plate, 315, the second driving part, 316, the moving block, 317, the first spring, 32, the second conveying mechanism, 321, the upper working line, 322, the lower return line, 33, the code scanning mechanism, 331, the code scanning mechanism, 332, the laser code printer, 333, the code scanning gun, 334, the coaxial dust removing mechanism, 34, the lug bending and rolling mechanism, 341, the first triaxial moving mechanism, 3411, the double-acting sub X-axis linear module, 3412, the Y-axis linear module, 3413, the Z-axis linear module, 342, the bending and rolling mechanism, 3421, the bending mechanism, 3422, the welding machine comprises a rolling mechanism, a 35-lug welding mechanism, a 351-pressing mechanism, a 3511-second triaxial moving mechanism, a 3512-pressing head assembly, a 352-welding mechanism, a 3521-welding moving mechanism, a 3522-vibrating mirror assembly, a 36-post-welding detecting mechanism, a 361-third triaxial moving mechanism, a 362-microresistance testing and welding seam detecting mechanism, a 3621-microresistance testing mechanism, a 3622-welding seam detecting mechanism, a 37-upper wire connecting platform, a 38-reflow connecting platform, a 4-upper wire section of a battery core, a 41-battery core tray, a 42-battery core buffer bin, a 43-tray buffer bin, a 44-battery core buffer bin and a welding seam detecting mechanism, The battery module comprises a double-rotor driving mechanism, 45 parts of battery cell clamps, 46 parts of tray clamps, 5 parts of battery module lower line segments, 51 parts of module grabbing robots, 52 parts of buffer material racks, 511 parts of module grabbing mechanical arms, 512 parts of module grabbing clamps, 5121 parts of first clamping driving members, 5122 parts of first short-side clamping plates, 5123 parts of second short-side clamping plates, 5124 parts of long-side clamping plates, 5125 parts of clamping bottom plates, 6 parts of battery module precursors, 61 parts of battery cell modules, 62 parts of end plate assemblies.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and the accompanying drawings. Fig. 1 shows a preferred embodiment of the invention, as shown in fig. 1, the intelligent processing production line of the soft package power battery module comprises 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, wherein the battery cell processing section 1 comprises a cutting and bending mechanism 15, a dog lug mechanism 16 and a foam pad mounting mechanism which are sequentially arranged along the processing direction, the cutting and bending mechanism 15 is used for cutting and bending electrode lugs of the battery cell at fixed length, the dog lug mechanism 16 is used for bending the electrode lugs, the foam pad mounting mechanism is used for foam pad mounting of the battery cell, the module stacking section 2 comprises a battery module stacking device and a battery module extrusion bundling device which are sequentially arranged along the processing direction, the battery module extrusion bundling device is used for extruding and bundling the stacked battery cells into battery modules, the module welding section 3 comprises a bus bar mounting station, a lug rolling mechanism 34 and a lug welding mechanism 35 which are sequentially arranged along the processing direction, and the bus bar mounting station is used for rolling the lug leveling mechanism to bend the electrode lugs of the battery cell and the lug leveling mechanism after the battery is used for bending the lug leveling mechanism is used for welding the bus bar rolling and bending the lug leveling mechanism 35. The full-line production process of the soft package battery module is automated through the processing production line, and the layout is reasonable.

Further, as shown in fig. 2, in another embodiment of the present invention, the module stacking section 2 includes a stacking table 21, a first stacking mechanism, and a second stacking mechanism, where the stacking table 21 is provided with a stacking table 211, the stacking table 21 can drive the stacking table 211 to rotate between the a-plane and the B-plane, the first stacking mechanism and the second stacking mechanism are respectively disposed near the a-plane and the B-plane, and when the stacking table 211 rotates to the a-plane, the first stacking mechanism is used to cooperate with the first stacking mechanism to stack the battery cells and the large support to form a battery cell module, and when the stacking table 211 rotates to the B-plane, 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. The number of the stacking tables 211 can be two, when one stacking table 211 faces the A face and the other stacking table 211 faces the B face, the two stacking tables 211 can work simultaneously, so that the equipment can work intermittently, and the production efficiency is ensured.

Further, as shown in fig. 2, in another embodiment of the present invention, the first stacking mechanism includes a cell moving mechanism 22, a first turnover mechanism 23, a support moving mechanism 24 and a support feeding mechanism 29, the cell output by the cell processing section 1 is transferred to a stacking table 211 through the cell moving mechanism 22, the front and back sides of the large support are adjusted through the first turnover mechanism 23 according to stacking requirements, the large support on the first turnover mechanism 23 is transferred to the stacking table 211 through the support moving mechanism 24, the second stacking mechanism includes an end plate assembly preassembling mechanism 25, a second turnover mechanism 26 and an end plate assembly moving mechanism 27, the end plate, the foam and the small support are assembled into an end plate assembly through the end plate assembly preassembling mechanism 25, the front and back sides of the end plate assembly are adjusted through the second turnover mechanism 2 according to stacking requirements, and the end plate assembly on the second turnover mechanism 26 is transferred to the stacking table 211 through the end plate assembly moving mechanism 27;

As shown in fig. 3, in another embodiment of the present invention, the cell moving mechanism 22 includes a first double-acting linear module 221 and a cell middle rotating stage 222, wherein two movers of the first double-acting linear module are respectively provided with a cell material taking clamp 223 and a cell stacking clamp 224;

In another embodiment of the present invention, as shown in fig. 4, the rack loading mechanism 29 comprises a large rack storage 291 and a large rack taking clamp 292 arranged at the bottom of the large rack storage 291, wherein the large rack is taken out from the large rack storage 291 by the large rack taking clamp 292, and the front and back sides of the large rack are adjusted by the first turnover mechanism 23 according to stacking requirements;

In another embodiment of the present invention, as shown in fig. 5, the rack moving mechanism 24 includes a second dual-active-cell linear module 241 and a large rack turntable 242, wherein a large rack taking clamp 243 and a large rack stacking clamp 244 are respectively disposed on two active cells of the second dual-active-cell linear module 241, the large rack taking clamp 243 is driven by the second dual-active-cell linear module 241 to clamp the large rack on the first tilting mechanism 23 to the large rack turntable 242, then the large rack stacking clamp 244 is driven to clamp the large rack on the large rack turntable 242 to the stacking table 211, and the electric core and the large rack are stacked on the stacking table 211 to form the electric core module 61.

In another embodiment of the present invention, as shown in fig. 6, the end plate assembly preassembling mechanism 25 comprises a feeding mechanism, a component picking mechanism 251 and a gluing mechanism 252, wherein the end plate, the foam and the small support are clamped onto the feeding mechanism through the component picking mechanism 251, the end plate, the foam and the small support are glued together through the gluing mechanism 252 to form the end plate assembly 62, the feeding mechanism can be a belt conveying line, the end plate assembly 62 is conveyed to the second turnover mechanism 26 through the feeding mechanism, the front side and the back side of the end plate assembly 62 are adjusted according to stacking requirements through the second turnover mechanism 26, the end plate assembly 62 on the second turnover mechanism 26 is clamped by the end plate assembly moving mechanism 27 and moved to the stacking table 211, and the electric core module 61 and the end plate assembly 62 are stacked on the stacking table 211 to form the battery module precursor 6.

Further, as shown in fig. 7, in another embodiment of the present invention, the module stacking section 2 further includes a squeeze strapping station 28, the squeeze strapping station 28 includes a grabbing robot 281, a squeeze mechanism 282, the battery module precursor is transferred to the squeeze mechanism 282 by the grabbing robot 281, the battery module precursor is squeezed by the squeeze mechanism 282, and a strapping band is squeezed to form a battery module, and the strapping band may be manually completed. As shown in fig. 8, in another embodiment of the present invention, the pressing mechanism 282 may include an upper pressing block 2821, a lower pressing block 2822, and a pressing cylinder 2823, and the upper pressing block 2821 is moved toward the lower pressing block 2822 by the pressing cylinder 2823 to press the battery module precursor 6 between the upper pressing block 2821 and the lower pressing block 2822.

The structure of the formed battery module precursor is shown in fig. 43, and the battery module precursor consists of a front end plate assembly 62, two middle battery core modules 61 and a rear end plate assembly 62, wherein in fig. 43, the front three parts are sequentially an end plate, foam and a small bracket from front to back to jointly form the front end plate assembly 62, the rear three parts are sequentially an end plate, foam and a small bracket from back to front to jointly form the rear end plate assembly 62, each three of the battery cores, foam and a large bracket from front to back are combined to jointly form the battery core module 61, and at least two repeatedly stacked battery core modules 61 are arranged in the single battery module precursor.

Further, as shown in fig. 9 and 10, 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 upper wire code scanning mechanism 13, an IV/OCV testing mechanism 14, a NG rejection mechanism, a cutting and bending mechanism 15, a dog-ear folding mechanism 16, a flip-over pairing mechanism 17, and a foam mounting mechanism 18 sequentially disposed along a conveying direction of the first conveying mechanism 12, where the first conveying mechanism 12 is used for conveying the battery cell carrier 11 to each processing mechanism in the battery cell processing section 1, and the battery cell carrier 11 is used for mounting a battery cell. The process flow of the cell processing section 1 comprises the steps of carrying out cell code scanning by a wire code scanning mechanism 13 after cell feeding, testing the resistance and the voltage of the cell by an IV/OCV testing mechanism 14, taking the cell of a code scanning NG or an IV/OCV testing NG by a carrying manipulator in an NG removing mechanism after testing, caching the cell on an NG pull belt, continuously sending the qualified cell to a cutting and bending mechanism 15 by a cell carrier 11, cutting and bending the cell tab at a fixed length, carrying out dog-ear inward folding by a dog-ear folding mechanism 16 after bending, carrying out selective overturning pairing on the cell by an overturning pairing mechanism 17 according to the stacking sequence after overturning pairing, carrying out foam mounting by a foam mounting mechanism 18, carrying the cell to a module stacking section 2 by a manipulator after foam mounting, and carrying the empty cell carrier 2 back to the wire head of a first conveying mechanism 12.

In another embodiment of the present invention, as shown in fig. 11, the first conveying mechanism 12 may be a magnetic suspension line, where the distance between each processing station of the whole magnetic suspension line is 300mm, compared with the traditional step of feeding, the magnetic suspension line body has the characteristics of high speed and high precision, so that the working position of each processing mechanism is reduced by at least half and the length of the whole line machine is shortened by at least half under the same production beat, the magnetic suspension line is divided into two layers, the upper layer is a working layer, the lower layer is a carrier reflow layer, the line head and the line tail of the magnetic suspension line are respectively provided with a feeding mechanism and a discharging mechanism, the feeding mechanism is used for lifting the electric core carrier 11 from the carrier reflow layer to the working layer, the feeding mechanism can be used for feeding two electric core carriers 11 at a time, the discharging mechanism lowers the electric core carrier 11 from the working layer to the carrier reflow layer, and the discharging mechanism can be used for reflowing one electric core carrier 11 at a time.

Further, as shown in fig. 12 and 13, in another embodiment of the present invention, the electric core carrier 11 includes a carrier plate 111 and two clamping assemblies, the two clamping assemblies are symmetrically disposed on two sides of the carrier plate 111, the clamping assemblies include a mounting frame 112, a pressing block 113, an elastic member 114, a clamping block 115 and a guide rod 116, the mounting frame 112 is fixedly connected with a long side of the carrier plate 111, the guide rod is perpendicular to the long side of the carrier plate, one end of the guide rod is connected with the top of the pressing block 113, one end of the guide rod is arranged on one side of the mounting frame 112 far away from the carrier plate 111 in a penetrating manner, the elastic member 233 is sleeved outside the guide rod, the pressing block is in an L-shaped structure, the bottom of the pressing block is fixedly connected with the middle of a transverse plate, two ends of the transverse plate are respectively connected with the bottoms of the two clamping blocks 115, and the top of the clamping block 115 is contacted with the long side of the electric core.

Under the normal state, the two clamping assemblies automatically compress the battery cell under the action of the spring force of the elastic piece 114, so that the battery cell can keep unchanged in position in the high-speed moving process, secondary positioning is not needed, and the precision of the subsequent processing technology can be ensured. The battery cell processing section 1 further comprises a clamping opening mechanism, the clamping opening mechanism is used for opening the battery cell carrier 11, the clamping opening mechanism is arranged at the corresponding positions of the feeding mechanism, the discharging mechanism, the IV/OCV testing mechanism 14 and the overturning pairing mechanism 17, when the battery cell carrier needs to be opened, the battery cell carrier is taken out of or clamped in the battery cell carrier, the clamping blocks 115 in the two clamping assemblies are driven to move back through the clamping opening mechanism, at the moment, the elastic piece 114 is compressed, and the battery cell carrier 2 is opened. Specifically, the elastic member 233 may be a spring. The bottom of the clamping block 115 is connected with a pulley 117, the clamping opening mechanism comprises 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 for jacking the two wedge-shaped top blocks 118. In the jacking process of the driving mechanism, the inner side of the pulley 117 is contacted with the chamfered inclined surface and moves along the position, close to the end surface of the wedge-shaped jacking block 118, on the chamfered inclined surface towards the position, close to the side surface of the wedge-shaped jacking block 118, and due to extrusion of the wedge-shaped jacking block 118, the clamping blocks 115 in the two clamping assemblies move back to each other, and finally the battery cells are released. Specifically, the driving mechanism may be a telescopic cylinder. In order to prevent the battery cell from being damaged by overvoltage, the top of the clamping block 115 in one clamping assembly is connected with a cross rod 1151, the cross rod 1151 is in contact with one long side of the battery cell, the top of the clamping block 115 in the other clamping assembly is penetrated with a floating rod 1152, the floating rod 1152 is in contact with the other long side of the battery cell, and the bottom of the carrier plate is provided with a limiting block for limiting the maximum compression degree of the clamping block 115 so as to prevent the battery cell from being crushed due to excessive compression.

In another embodiment of the present invention, as shown in fig. 14, the on-line code scanning mechanism 13 comprises a scanning terminal bracket 131 and a scanning terminal 132 arranged on the scanning terminal bracket 131, and the code scanning is performed by the scanning terminal 132 so as to trace the source of the subsequent production.

In another embodiment of the present invention, as shown in fig. 15, the IV/OCV testing mechanism 14 includes two IV/OCV testing components symmetrically disposed on two sides of the first conveying mechanism 12, the IV/OCV testing mechanism 14 includes a first moving mechanism 141, an IV testing probe 142 disposed on the moving mechanism 141, an OCV testing probe 143, the IV testing probe 142 is used to complete the test by contacting a tab with a probe, and a blade pierces an aluminum plastic film, the OCV testing probe 143 is used to complete the test by contacting a tab with a probe, and simultaneously, the surface temperature of the battery cell is measured, specifically, the first moving mechanism 141 includes a first Y-direction linear driving module (Y-direction is perpendicular to the conveying direction of the first conveying mechanism 12), a first Z-direction driving member disposed on the Y-direction linear driving module, and the IV testing probe 142 and the OCV testing probe 143 are disposed on the movable end of the Z-direction driving member.

The cutting and bending mechanism 15 comprises tab cutting assemblies symmetrically arranged at two sides of the first conveying mechanism 12 and tab bending assemblies symmetrically arranged at two sides of the first conveying mechanism 12, wherein each tab cutting assembly comprises a battery core pressing mechanism and a cutting knife cutting mechanism, each cutting knife cutting mechanism comprises a cutting cylinder and a cutting knife, each battery core pressing mechanism comprises a pressing cylinder and a pressing block, the pressing cylinders drive the pressing blocks to press down so as to press down the battery core, and after the battery core is pressed, the cutting cylinders drive the cutting knives to cut the battery core tabs;

As shown in fig. 16 to 18, in another embodiment of the present invention, the dog-ear earphone mechanism 16 includes two dog-ear assemblies symmetrically disposed on two sides of the first conveying mechanism 12, the dog-ear assemblies include a second motion mechanism, a bottom supporting mechanism 161, and a dog-ear lifting cylinder 162, the second motion mechanism includes a second Y-direction linear driving module, a first Z-direction linear driving module disposed on the second Y-direction linear driving module, the bottom supporting mechanism 161 and the dog-ear lifting cylinder 162 are disposed on the first Z-direction linear driving module, the dog-ear lifting cylinder 162 is disposed above the bottom supporting mechanism 161, an inner folding assembly and an outer folding assembly are disposed on a mover of the dog-ear lifting cylinder 162, the outer folding assembly includes a first driving assembly 163 and two outer folding blocks 164 symmetrically disposed, a splayed outer folding inclined surface 167 is disposed on an inner side of the two outer folding blocks 164, the movable end of the first driving assembly 163 is connected with the two outer folding blocks 164, the inner folding assembly includes a second driving assembly 165, two inner folding blocks 166 symmetrically disposed on one side of the inner folding blocks 166 are disposed, and the movable ends of the two inner folding blocks 165 are connected with the movable ends of the two outer folding blocks. The dog-ear folding mechanism 16 has the working principle that the cell carrier 11 is opened through the opening and clamping mechanism, the first Y-direction linear driving module advances to enable the dog-ear folding mechanism 16 to be close to a cell, the bottom supporting mechanism 161 stretches into the lower portion of the cell, the first Z-direction linear driving module ascends to enable the bottom supporting mechanism 161 to support the bottom of the cell and drive the cell to ascend, the dog-ear folding lifting cylinder 162 descends to enable the two outer folding blocks 164 and the two inner folding blocks 166 to be close to the cell, the first driving assembly 163 drives the two outer folding blocks 164 to move in the opposite direction, the outer side of the dog-ear 61 of the cell is pressed through the outer folding inclined surface 167, the second driving assembly 1616 drives the two inner folding blocks 166 to move in the opposite direction, the abutting blocks abut against the inner side of the dog-ear 61 of the cell, and the outer folding blocks 164 and the inner folding blocks 166 are matched to enable the cell-ear folding to be completed in order, so that the dog-ear folding is ensured not to be interfered when the cell is stacked.

As shown in fig. 19, in another embodiment of the present invention, the turnover pairing mechanism 17 includes two turnover pairing assemblies symmetrically disposed on two sides of the first conveying mechanism 12, the turnover pairing assemblies include a second Z-direction linear driving module 171, an automatic clamping jaw 172 disposed on the second Z-direction linear driving module 171, and a rotation driving member 173, the automatic clamping jaw 172 includes a clamping jaw bottom plate 1721, an upper clamping plate 1722, a lower clamping plate 1723, and a folding driving member 1724, the clamping jaw bottom plate 1721 is disposed on a rotation shaft of the rotation driving member 173, the upper clamping plate 1722 and the lower clamping plate 1723 are slidably disposed on the clamping jaw bottom plate 1721, and the upper clamping plate 1722 is disposed opposite to the lower clamping plate 1723, and the folding driving member 1724 is used for driving the upper clamping plate 1722 to fold with the lower clamping plate 1723. The working principle of the overturning pairing mechanism 17 is that the folding driving piece 1724 drives the upper clamping plate 1722 and the lower clamping plate 1723 to fold so as to clamp the short sides of the battery cells, the rotating driving piece 173 drives the automatic clamping jaw 172 to rotate 180 degrees after clamping the battery cells, so as to finish overturning the battery cells, before overturning the battery cells, the second Z-direction linear driving module 171 firstly drives the automatic clamping jaw 172 to rise to a proper height so as to prevent the subsequent battery cells from interfering with the battery cell carrier 11, and after the battery cells are overturned, the automatic clamping jaw 172 is driven to descend to the original position, and the battery cells are put back into the battery cell carrier 11.

Further, as shown in fig. 20, in another embodiment of the present invention, the foam mounting mechanism 18 includes a cell glue spraying mechanism 181 and a foam feeding mechanism, where the cell glue spraying mechanism 181 is used to spray glue to a cell, the foam feeding mechanism includes a foam bin 182, a material taking mechanism 183 and a mounting mechanism 184, the foam bin 182 is used to store foam, the material taking mechanism 183 is used to take out foam in the foam bin 182, and the mounting mechanism 184 is used to mount the sprayed cell with the foam on the material taking mechanism 183.

The electric core glue spraying mechanism 181 comprises a third Y-direction linear driving module and a glue valve arranged on the third Y-direction linear driving module, wherein the third Y-direction linear driving module spans over the first conveying mechanism 12, and the glue valve is driven to move and spray glue through the third Y-direction linear driving module, and a color code sensor is arranged on the glue valve so as to detect glue spraying effect.

In another embodiment of the present invention, as shown in fig. 21 to 23, a discharging hole is formed in the foam bin 182, the material taking mechanism 183 includes a material taking assembly and a transplanting assembly, the material taking assembly includes an X-direction linear module 1831, a lifting driving member 1832, and a material taking block 1833, a mover of the X-direction linear module 1831 is connected to the lifting driving member 1832, a movable end of the lifting driving member 1832 is connected to the material taking block 1833, the transplanting assembly includes 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 disposed on the mover of the Z-direction linear module 1836, and the movable end thereof is connected to one end of the material taking fork 1835, and as shown in fig. 25, 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 sucker 1837 and a second sucker 1838.

The working principle of the material taking mechanism is that an X-direction linear module 1831 drives a lifting driving part 1832 and a material taking block 1833 to move to a material outlet, the lifting driving part 1832 drives the material taking block 1833 to move to the material taking block 1833 to prop against foam in a foam bin 182, after a first sucker 1837 on the material taking block 1833 absorbs foam, the lifting driving part 1832 drives the material taking block 1833 to move to the original position, the X-direction linear module 1831 drives the lifting driving part 1832 and the material taking block 1833 to move until the material taking block 1833 is aligned with a material taking fork 1835, after the alignment, a Y-direction driving part 1834 drives the material taking fork 1835 to extend until the material taking block 1833 is matched with a slot, after a second sucker 1838 on the material taking fork 1835 absorbs foam, the Y-direction driving part 1835 is retracted until the material taking fork 1833 is completely withdrawn from the slot, and after the material taking block 1833 is completely withdrawn from the slot, the Z-direction linear module drives the Y-direction driving part 1834 and the material taking fork 1835 to be lifted to a transplanting position from the material taking position so as to be convenient to butt joint with the material taking mechanism 184.

The discharging hole is formed in the bottom of the foam bin 182, the X-direction linear module 1831 is located below the foam bin 182, the foam bins 182 are arranged along the length direction of the X-direction linear module 1831, after one foam bin 182 is taken out, the rest foam naturally falls down and waits for taking out, foam position adjusting mechanisms are reduced, the number of the foam bins 182 is at least four, at least 120 foam bins 182 are cached, and therefore continuous feeding can be achieved for at least 50min, the discharging hole is provided with a taking baffle, the taking baffle is opened during taking, and the taking baffle rebounds after taking out is finished, so that foam is prevented from falling out.

In another embodiment of the present invention, as shown in fig. 24, the foam mounting mechanism 18 further includes a foam centering mechanism 185, where the foam centering mechanism 185 includes a third double-acting linear module 1851, two baffles 1852, the third double-acting linear module 1851 is disposed on the mover of the X-direction linear module 1831, two movers of the third double-acting linear module 1851 are respectively connected to the two baffles 1852, the two baffles 1852 are slidably disposed on the mover of the X-direction linear module 1831 and symmetrically disposed at two sides of the material taking block 1833, and the working principle of the foam centering mechanism 185 is that after the foam is taken out, the third double-acting linear module 1851 drives the two movers to move in opposite directions, so that the two baffles 1852 move in opposite directions, and the foam located between the two baffles 1852 is centered, so as to improve the accuracy of transplanting the subsequent foam, and the third double-acting linear module 1851 drives the two movers to move back to the original position.

As shown in FIG. 26, in another embodiment of the invention, the mounting mechanism 184 comprises a Y-direction linear module 1841, a mounting driving member 1842 and a mounting claw 1843, wherein the Y-direction linear module 1841 spans over the conveying mechanism, the mounting driving member 1842 is arranged on a rotor of the Y-direction linear module 1841, the movable end of the mounting driving member 1842 is connected with the mounting claw 1843, the Y-direction linear module 1841 and the mounting driving member 1842 jointly drive the mounting claw 1843 to mount electric cores and foam, the mounting driving member 1842 is preferably a cylinder driving member capable of vertically lifting, the mounting mechanism 184 is operated in such a manner that the mounting driving member 1842 and the mounting claw 1843 are driven to move above the electric core carrier 11 by the opening clamping mechanism 11, the mounting driving member 1842 drives the mounting claw 1843 to descend to clamp the electric cores on the electric core carrier 11, the mounting driving member 1843 drives the mounting claw 1843 to ascend to clamp the electric cores on the electric core 1843, and the mounting driving member 1843 ascends to drive the mounting claw 1843 to move back to the electric core 1845 and the mounting claw 1843 to the mounting claw 1845 to move the mounting claw 1845 upwards and the mounting driving member 1845 to clamp the electric core 1843 to move the mounting claw 1843 upwards.

Further, as shown in fig. 27 and 29, in another embodiment of the present invention, the module welding section 3 includes a tool fixture 31, a second conveying mechanism 32, and a code scanning mechanism 33, a busbar mounting station, a tab bending and rolling mechanism 34, a tab welding mechanism 35, and a post-welding detecting mechanism 36 sequentially disposed along a conveying direction of the second conveying mechanism 32, where the second conveying mechanism 32 is used to convey the tool fixture 31 to each processing mechanism in the module welding section 3, the tool fixture 31 is used to carry a battery module, and the tool fixture 31 can rotate on a horizontal plane. The work flow of the module welding section 3 comprises the steps of grabbing a battery module onto a tooling fixture 31 of a wire end of a second conveying mechanism 32 through a manipulator, conveying the tooling fixture 31 to each station through the second conveying mechanism 32, carrying out code marking and code marking through a code marking and scanning mechanism 33 at one station, installing a busbar support by a busbar installation station at the two stations, wherein the busbar support can be manually installed or installed by a manipulator, the embodiment is not limited to the two stations, installing the busbar support on the front side firstly, then rotating the tooling fixture 31, turning the front side and the back side of the battery module, installing the busbar support on the back side, carrying out lug bending and rolling through a lug bending and rolling mechanism 34 at three stations, carrying out lug welding processing through a lug welding mechanism 35 at four stations, carrying out micro-resistance detection and weld quality detection of the lug through a post-welding detection mechanism 36 at five stations, grabbing the battery module to the next step by the manipulator, and reflowing the empty tooling fixture 31 to the wire end of the second conveying mechanism 32.

In another embodiment of the present invention, as shown in fig. 28, the module welding segment 3 further comprises an upper wire connection platform 37 and a reflow connection platform 38, wherein the second conveying mechanism 32 is preferably a magnetic levitation wire, comprising an upper layer work wire 321 and a lower layer reflow wire 322, the upper wire connection platform 37 is arranged at the wire ends of the upper layer work wire 321 and the lower layer reflow wire 322 and used for moving the tool fixture 31 from the lower layer reflow wire 322 to the upper layer work wire 321, and the reflow connection platform 38 is arranged at the wire ends of the upper layer work wire 321 and the lower layer reflow wire 322 and used for lowering the tool fixture 31 from the upper layer work wire 321 to the lower layer reflow wire 322 so as to form the circulation of the tool fixture 31.

Further, as shown in fig. 29 to 32, in another embodiment of the present invention, the tool fixture 31 includes a fixed bottom plate 311, a rotating assembly 312, and a battery module clamping assembly 313, where the battery module clamping assembly 313 is disposed on an upper surface of the fixed bottom plate 311 and is used for clamping and centering the battery module, the rotating assembly 312 includes a rotating gear 3121, a rack 3122, and a driving assembly, the rotating gear 3121 is disposed on a lower surface of the fixed bottom plate 311, the rotating gear 3121 is meshed with the rack 3122, and the driving assembly is connected with the rack 3122 and is used for driving the rack 3122 to move to drive the rotating gear 3121 to rotate, thereby driving the fixed bottom plate 311 to rotate on a horizontal plane. The battery module is carried by the tool jig 31, the tool jig 31 is in a rotatable design, after the busbar on the front side of the battery module is installed, the tool jig 31 is used for turning the front side and the back side of the battery module, the same busbar installation station is continuously used for installing the busbar on the back side of the battery module, two busbar installation stations are not needed to be arranged to meet the busbar installation requirements on the front side and the back side of the battery module, and the rotation angle is set to be 180 degrees so as to realize the complete turning of the front side and the back side of the battery module.

As shown in fig. 32, in another embodiment of the present invention, the driving assembly includes a linear module 3123 and a first driving member 3124, wherein a mover of the linear module 3123 is connected to the first driving member 3124, a movable end of the first driving member 3124 is connected to a plugging block 3125, a plugging slot 3126 is formed on the rack 3122, the first driving member 3124 is used for plugging the plugging block 3125 with the plugging slot 3126 when the movable end of the first driving member 3124 extends, the linear module 3123 is used for driving the rack 3122 to move to drive the rotation gear 3121 to rotate and further drive the fixed bottom plate 311 to rotate on a horizontal plane, and the first driving member 3124 is preferably a telescopic cylinder.

As shown in fig. 32, in another embodiment of the present invention, a clamping block 3111 is further disposed on the lower surface of the fixed bottom plate 311, the module fixture 31 further includes a lower mounting plate 314 and a rotation locking assembly, the lower mounting plate 314 is disposed below the rotation gear 3121, 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, the other end of the moving block 316 is capable of being clamped to the clamping block 3111, and a movable end of the second driving member 315 is connected to the moving block 316 for driving the moving block 316 to withdraw from the clamping block 3111.

In the locking state, the moving block 316 is clamped with the clamping block 3111 under the action of the first spring 317, the fixed bottom plate 311 is locked, the fixed bottom plate 311 and the battery module placed on the fixed bottom plate 311 are prevented from rotating due to accidental touch, and when the battery module needs to be overturned, the moving block 316 is driven to withdraw from the clamping block by the second driving piece 315, so that unlocking is realized, and at the moment, the fixed bottom plate 311 is restored to freely rotate. Specifically, the moving block 316 has a T-shaped structure, a first end of the moving block 316 is connected with the lower mounting plate 314 through a first spring 317, a second end of the moving block is clamped with the clamping block 3111, a third end of the moving block is provided with a pulley, a movable end of the second driving member 315 is connected with a pushing block, a chamfer is arranged on one side of the pushing block, which is close to the pulley, when the movable end of the second driving member 315 extends out, the pulley is contacted with the chamfer, the pulley rolls along the chamfer, under the pressure of the chamfer, the first spring 317 is extruded, and meanwhile, the moving block 316 exits from the clamping block 3111. In order to improve the rotation smoothness, a plurality of balls are arranged between the lower mounting plate 314 and the fixed bottom plate 311, support is provided for the rotation of the fixed bottom plate 311 through the balls, the friction force between the lower mounting plate 314 and the fixed bottom plate 311 is reduced, and the number of the balls can be four and are respectively arranged at four corners of the lower mounting plate 314.

Further, as shown in fig. 32, 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, where the two clamping blocks 3133 are slidably disposed on the fixed bottom plate 311, a sliding rail is disposed on the fixed bottom plate 311, a sliding block matched with the sliding rail is disposed at the bottom of the clamping block 3133, threaded sleeves 3134 are connected to the bottoms of the two clamping blocks 3133, the threads of the two threaded sleeves 3134 are opposite in direction, the outer wall of the threaded rod 3132 is matched with the inner wall of the two threaded sleeves 3134 through threads, an output shaft of the rotating motor 3131 is coaxially disposed 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 for driving the threaded rod 3132 to rotate in a forward direction to drive the two clamping blocks 3133 to move in a opposite direction, or driving the threaded rod 3132 to rotate in a reverse direction to drive the two clamping blocks 3133 to move in a reverse direction, so as to release the middle battery module. In addition, the clamping blocks 3133 are provided with floating blocks, the floating blocks are connected with the clamping blocks 3133 through second springs, and deformation or damage of the battery module due to excessive clamping is prevented through the floating blocks and the second springs.

Further, as shown in fig. 30, in another embodiment of the present invention, the output shaft of the rotating electric machine 3131 is provided with a snap-fit joint 3135, one end of the threaded rod 3132 is provided with a snap-fit groove 3136, 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 rotating shaft of the rotating electric machine 3131. When the output end of the power mechanism 3137 extends, the rotating motor 3131 is driven to move towards one end of the threaded rod 3132 until the clamping head 3135 is clamped with the clamping groove 3136, at this time, the rotating motor 3131 and the threaded rod 3132 are in a connection state, power can be normally transmitted, and when the output end of the power mechanism 3137 retracts, the rotating motor 3131 is driven to move towards a direction away from the threaded rod 3132 until the clamping head 3135 is retracted out of the clamping groove 3136. The rotating motor 3131 and the threaded rod 3132 are detachably connected, and after the battery module is clamped and centered, the rotating motor 3131 and the threaded rod 3132 are turned into a separated state, so that the rotating motor 3131 cannot interfere with other subsequent processing mechanisms.

Further, as shown in fig. 34, the code scanning mechanism 33 includes a code scanning mechanism 331, and a laser code printer 332, a code scanning gun 333 and a coaxial dust removing mechanism 334 disposed on the code scanning mechanism 331. Specifically, the code-marking and code-scanning movement mechanism 331 is a three-dimensional movement mechanism, and comprises 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, wherein the laser code-marking machine 332, the code-scanning gun 333 and the coaxial dust-removing mechanism 334 are all arranged on the Z-axis cantilever. The working principle of the code-etching and code-scanning mechanism 33 is that when the code-etching and code-scanning mechanism 331 works, the code-etching and code-scanning mechanism 331 carries the laser code-etching machine 332, the code-scanning gun 333 and the coaxial dust-removing mechanism 334 to reach the code-etching position of a product, the laser code-etching machine 332 performs laser code etching on a product bracket, the coaxial dust-removing mechanism 334 synchronously performs processing dust treatment on laser processing, and the code-scanning gun 333 scans codes for reading and binding.

Further, in another embodiment of the present invention, the number of the tab bending and leveling mechanisms 34 is two, the two sets of tab bending and leveling mechanisms 34 are symmetrically disposed at two sides of the second conveying mechanism 32 and are respectively used for bending and leveling the front tab and the back tab, as shown in fig. 35, the tab bending and leveling mechanism 34 includes a first triaxial movement mechanism 341 and two sets of bending and leveling mechanisms 342, the first triaxial movement mechanism 341 includes a double-rotor X-axis linear module 3411, two movers of the double-rotor X-axis linear module 3411 are respectively provided with a Y-axis linear module 3412, each mover of the Y-axis linear modules 3412 is provided with a Z-axis linear module 3413, and the two sets of bending and leveling mechanisms 342 are symmetrically disposed on movers of the two Z-axis linear modules 3413, wherein the bending and leveling mechanisms 342 include a bending mechanism 3421, a leveling mechanism 3422, a vision mechanism, a distance measuring mechanism and a key mechanism missing detection mechanism. The working principle of the tab bending and leveling mechanism 34 is that the visual mechanism and the ranging mechanism are used for detecting the position of the tab of the battery module together, the position information is fed back to the first triaxial movement mechanism 341 after detection is completed, then the first triaxial movement mechanism 341 carries the bending mechanism 3421 to process the tab, bending is carried out firstly, then the tab is flattened, and after bending and flattening of all tabs of the battery module are completed, the first triaxial movement mechanism 341 carries the leveling mechanism 3422 to process the tab, so that the tab is leveled.

In another embodiment of the present invention, as shown in fig. 36, the bending mechanism 3421 is a bending sheet, the rolling mechanism 3422 is a round carrier roller, the bending sheet is driven to move a certain distance along the X-axis direction by the action of the first triaxial movement mechanism 341 to make the bending sheet coincide with the tab to be bent, then the bending sheet is driven to move a certain distance along the Y-axis direction to complete the bending operation of the tab, and after bending, the round carrier roller is driven to move a certain distance along the X-axis direction by the action of the first triaxial movement mechanism 341 to make the round carrier roller contact with the tab, and then the round carrier roller is driven to move a certain distance along the Y-axis direction to complete the leveling of the tab.

Further, as shown in fig. 37, in another embodiment of the present invention, the tab welding mechanism 35 includes a pressing mechanism 351 and a welding mechanism 352, the pressing mechanism 351 includes a second triaxial moving mechanism 3511 and two ram assemblies 3512, specifically, the second triaxial moving mechanism 3511 has the same structure as the first triaxial moving mechanism 341, the two ram assemblies 3512 are respectively disposed on the movers of the two Z-axis linear modules 3413 of the second triaxial moving mechanism 3511, the welding mechanism 352 includes a welding moving mechanism 3521 and a vibrating mirror assembly 3522, and the vibrating mirror assembly 3522 is disposed on the welding moving mechanism 3521 for welding the tab of the battery module. The working principle of the tab welding mechanism 35 is that the second triaxial moving mechanism 3511 carries a group of pressing head assemblies 3512 to press the tab on one side of the battery module, after pressing, the welding moving mechanism 3521 carries a vibrating mirror assembly 3522 to weld the tab, when the tab on one side of the battery module is waited for welding, the second triaxial moving mechanism 3511 carries another group of pressing head assemblies 3512 to press the tab on the other side of the battery module, and the two groups of pressing head assemblies 3512 are alternately pressed, so that the vibrating mirror assembly 3522 keeps non-stop processing.

Further, as shown in fig. 38, in another embodiment of the present invention, the soft package battery module assembly welding line body further includes a post-welding detection mechanism 36, the post-welding detection mechanism 36 includes a third triaxial movement mechanism 361, two micro-resistance testing and welding seam detection mechanisms 362, the third triaxial movement mechanism 361 has the same structure as the first triaxial movement mechanism 341, the two micro-resistance testing and welding seam detection mechanisms 362 are symmetrically disposed on the movers of the two Z-axis linear modules 3413 of the third triaxial movement mechanism 361, the micro-resistance testing and welding seam detection mechanisms 362 includes a micro-resistance testing mechanism 3621 and a welding seam detection mechanism 3622, the micro-resistance testing mechanism 3621 is used for performing micro-resistance detection, and the welding seam detection mechanism 3622 is used for performing welding seam quality detection. The working principle of the post-welding detection mechanism 36 is that the third triaxial movement mechanism 361 carries a micro-resistance testing mechanism 3621 and a welding seam detection mechanism 3622 to detect micro-resistance and welding seam quality of the battery module.

Further, as shown in fig. 39 and 40, in another embodiment of the present invention, the smart processing line for soft package power batteries further includes a battery upper line segment 4, where the battery upper line segment 4 includes a battery tray 41, a battery buffer bin 42, a tray buffer bin 43, and a double-acting driving mechanism 44, the battery buffer bin 42 is used for storing the battery tray 41 with the battery, the battery tray 41 with the battery is placed in the battery buffer bin 42 manually or by an AGV trolley, two movers of the double-acting driving mechanism 44 are respectively provided with a battery clamp 45 and a tray clamp 46, the battery clamp 45 is used for clamping the battery in the battery tray 41, and placing the battery in the battery processing segment 1 under the driving of the double-acting driving mechanism 44, and the battery clamp 45 is used for clamping the hollow tray clamp 46 in the battery buffer bin 42, and placing the hollow tray clamp 46 in the tray buffer bin 43 under the driving of the double-acting driving mechanism 44.

In another embodiment of the invention, as shown in fig. 41 and 42, the flexible-package power battery intelligent processing production line further comprises a battery module lower line segment 5, wherein the battery module lower line segment comprises a module grabbing robot 51 and a buffer material frame 52, the module grabbing robot 51 is used for grabbing a battery module output by a module welding section 3 to the buffer material frame 52 to realize battery module lower line storage, the module grabbing robot 51 comprises a module grabbing mechanical arm 511 and a module grabbing clamp 512 arranged on the module grabbing mechanical arm, the module grabbing clamp 512 comprises a clamping bottom plate 5125 and a short-side clamping assembly and a long-side clamping assembly arranged on the clamping bottom plate, the short-side clamping assembly comprises a first clamping driving member 5121, a first short-side clamping plate 5122 and a second short-side clamping plate 5123 which are oppositely arranged, the first short-side clamping plate 5122 is fixedly connected with the clamping bottom plate 5125, the second short-side clamping plate 5123 is slidingly arranged on the clamping bottom plate 5125, the first clamping driving member 5121 is connected with the second short-side clamping plate 5123 and is used for driving the second short-side clamping plate 5122 to move towards the first short-side clamping plate 5122, the long-side clamping assembly comprises a second clamping driving member and a long-side clamping assembly which is arranged on the opposite clamping bottom plate and two long-side clamping plates 5124 are arranged on the clamping bottom plate.

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).