Square battery positive electrode sheet outwrapping winding mechanism and double-station winding machine

Abstract

The invention discloses a square battery cell positive electrode sheet outer wrapping winding mechanism and a double-station winding machine, the winding mechanism comprises: a winding assembly, comprising two plug-in winding needle units, the plug-in winding needle unit at the upper winding station can receive a diaphragm, a negative electrode sheet and a positive electrode sheet and rotate to the lower winding station to carry out positive electrode sheet edge wrapping winding after completing pre-winding and sheet insertion winding; a pole sheet pressing assembly, comprising two pole sheet pressing devices, used for pressing the negative electrode sheet and the positive electrode sheet onto the diaphragm; a diaphragm ... pole sheet pressing devices, The invention comprises two diaphragm pressing devices, and presses the diaphragm, the negative electrode sheet and the positive electrode sheet tightly during the pre-winding, sheet insertion winding and rotation from the upper winding station to the lower winding station of the plug-in needle winding unit, and / or presses the two diaphragms to clamp the negative electrode sheet during the diaphragm welding and cutting process of the diaphragm welding and cutting assembly; the positive electrode sheet lifting assembly is used to lift the positive electrode sheet and match the positive electrode sheet edge wrapping; the finishing assembly is used to hold the diaphragm during the diaphragm welding and cutting process, and / or hold the positive electrode sheet during the positive electrode sheet edge wrapping process.

Description

Technical Field

[0001] The present invention relates to the technical field of battery equipment, in particular to a square battery core positive electrode sheet outer wrapping winding mechanism and a double-station winding machine. Background Art

[0002] Among the current battery cell equipment, wound battery cells are adopted by the majority of lithium battery manufacturers due to their advantages such as stable battery performance and high manufacturing efficiency. They account for a large market share, and therefore the demand for corresponding battery winding machines is also large.

[0003] However, the existing winding machines for square cells on the market have become more and more difficult to manufacture, with high equipment costs and low yield rates due to the increasingly smaller volume of square cells and higher process precision requirements. At the same time, the existing adapted winding machines have problems such as complex structure, complex operation, unstable cell production and low yield rates.

[0004] At the same time, the battery cell winding outsourcing process includes positive electrode sheet outsourcing and diaphragm outsourcing. It is difficult to outsource the positive electrode sheet of small square wound batteries due to the compact space of the mechanism. Currently, the equipment involved in the outsourcing of positive electrode sheets of square wound batteries are all wound conventional square batteries.

[0005] In the relevant technical field, there is still a lack of better technical solutions to solve the above problems. Summary of the invention

[0006] The technical problem solved by the present invention is to provide a square battery cell positive electrode sheet outer wrapping winding mechanism and a double-station winding machine for the problems in the prior art mentioned above, so as to solve the problem that small and medium-sized square battery cell winding equipment in the related technical field is difficult to realize the outer wrapping winding of the positive electrode sheet due to space constraints, thereby realizing the outer wrapping winding of the positive electrode sheet of small square battery cells.

[0007] In the first aspect, a technical solution adopted by the present invention is as follows: a square battery cell positive electrode sheet outer wrapping winding mechanism, comprising a winding assembly arranged on a panel and a pole sheet pressing assembly, a diaphragm pressing assembly, a diaphragm welding and cutting assembly, a positive electrode sheet lifting assembly and a finishing assembly arranged on the panel and located on the circumferential outer side of the winding assembly, wherein:

[0008] The winding assembly includes two plug-in needle winding units that can rotate alternately between an upper winding station and a lower winding station. The plug-in needle winding unit located at the upper winding station can receive the separator, the negative electrode sheet and the positive electrode sheet at the upper winding station and rotate to the lower winding station to perform positive electrode sheet edge wrapping and finishing after completing pre-winding and insert sheet winding.

[0009] The electrode sheet pressing assembly includes two electrode sheet pressing devices symmetrically arranged on both sides of the winding upper auxiliary device, which are used to cooperate with the winding upper auxiliary device to press the unwound negative electrode sheet and positive electrode sheet against the diaphragm and / or pull in the sheet; the diaphragm pressing assembly includes two symmetrically arranged diaphragm pressing devices, and presses the diaphragm with the negative electrode sheet and the positive electrode sheet during the pre-winding, insert winding and rotation from the upper winding station to the lower winding station of the plug-in needle winding unit, and / or presses the two diaphragms to clamp the negative electrode sheet during the welding and cutting of the diaphragm by the diaphragm welding and cutting assembly; the positive electrode sheet lifting assembly is used to lift the positive electrode sheet and enable the diaphragm welding and cutting assembly to weld and cut the two diaphragms; the finishing assembly is used to hold the diaphragm during the diaphragm welding and cutting process, and / or hold the positive electrode sheet during the positive electrode sheet edge wrapping process and cooperate with the plug-in needle winding unit to complete the positive electrode sheet edge wrapping and winding finishing of the battery cell.

[0010] As a further elaboration of the above technical solution:

[0011] In the above technical solution, the two plug-in needle winding units are installed on the revolution component, and the revolution component includes a base seat fixed to the panel, and a main shaft turntable is coaxially mounted on the base seat. The main shaft turntable rotates through the meshing transmission of a transmission gear arranged at one axial end thereof and a driving gear arranged on the driving shaft of a reducer driven by the revolution motor, and drives the two plug-in needle winding units nested on the main shaft turntable to rotate alternately between the upper winding station and the lower winding station; each of the plug-in needle winding units includes a needle winding unit The main shaft is provided with a first transmission gear, and the first transmission gear is meshed with a driven gear on two coaxial transmission shafts. Both transmission shafts are connected to the winding drive motor through a synchronous belt transmission pair, and the transmission shaft is driven by the corresponding winding drive motor to rotate. The two plug-in winding needle units are driven to rotate relative to the main shaft turntable to complete the winding of the battery cell; a shaft tail wheel is also arranged at the axial end of each winding needle center shaft away from the winding needle connector, and a shaft tail paddle wheel is arranged at the end of the winding needle core shaft extending out of the winding needle center shaft provided with the shaft tail wheel; each of the plug-in winding needle units is also connected to a withdrawal device arranged vertically on the panel, and the withdrawal device includes a mounting plate arranged vertically on the panel, and a linear guide is arranged on the mounting plate, and a needle outgoing paddle block and a paddle pull block are movably arranged on the linear guide, and the needle outgoing paddle block and the ... The pulling blocks are respectively connected to the driving cylinders fixed on the mounting plate through the connecting blocks and can be driven by the matching driving cylinders to slide along the linear guide rail. The needle ejection block and the paddle pull block are also arranged to be movably docked with the shaft tail wheel and the shaft tail paddle wheel respectively in the setting position, and drive the plug-in needle winding unit to eject or withdraw the needle during the sliding of the needle ejection block along the linear guide rail, and / or drive the plug-in piece to insert / withdraw the wound battery cell parallel to the winding needle during the sliding of the paddle pull block along the linear guide rail.

[0012] In the above technical scheme, the two electrode sheet pressing devices include a negative electrode sheet pressing device and a positive electrode sheet pressing device, and the negative electrode sheet pressing device and the positive electrode sheet pressing device both include a slide group seat arranged vertically on a panel, and the slide group seat is connected to a movable frame via a first linear guide rail arranged vertically thereon, and one end of the movable frame matching its moving direction is equipped with a electrode sheet pressing roller via a pressure wheel seat, and the pressure wheel seat of the positive electrode sheet pressing device is also connected to a sheet entry guide block adapted to the winding upper auxiliary device, and the movable frame is also connected to a first driving cylinder arranged on the slide group seat; the first driving cylinder drives the movable frame to drive the electrode sheet pressing roller and / or the sheet entry guide block to move along the first linear guide rail, matching The unwound negative electrode sheet and positive electrode sheet are pressed against the diaphragm and / or pulled in; the two diaphragm pressing devices each include a first slide seat arranged vertically on the panel, the first slide seat is connected to the first moving frame through a second linear guide rail arranged vertically thereto, the first moving frame is matched with one end of its moving direction and is equipped with a diaphragm pressing roller through a first pressing wheel seat, the first moving frame is also connected to a second driving cylinder arranged on the first slide seat; the second driving cylinder drives the first moving frame to drive the diaphragm pressing roller to move along the second linear guide rail, matching the diaphragm to press the negative electrode sheet and the positive electrode sheet and / or pressing the two diaphragms to clamp the negative electrode sheet; the diaphragm welding and cutting assembly includes symmetrically arranged hot and cold welding and cutting devices and a welding and cutting auxiliary device, the hot and cold welding and cutting device and the welding and cutting auxiliary device both include a second slide seat arranged vertically on the panel, the second slide seat is connected to the welding and cutting frame through a third linear guide rail arranged vertically thereto, the welding and cutting frame of the hot and cold welding and cutting device is connected to the hot cutting welding knife through a thermal insulation pad, the lower part of the hot cutting welding knife is also provided with a diaphragm cold cutting knife fixedly connected to the welding and cutting frame, the welding and cutting frame of the welding and cutting auxiliary device is fixedly connected to a welding and cutting pad block that matches and faces the hot cutting welding knife and the diaphragm cold cutting knife at a setting position, the welding and cutting frame is also connected to a third driving cylinder arranged on the second slide seat; the third driving cylinder drives the welding and cutting frame to slide along the third linear guide rail, so that the hot cutting welding knife and the diaphragm cold cutting knife The knife and the welding and cutting pad move towards each other to match the welding and cutting of the diaphragm; the finishing component includes a third slide seat arranged vertically on the panel, and the third slide seat is connected to the third moving frame through a fourth linear guide rail arranged vertically thereto, and the third moving frame is matched with one end of its moving direction and is equipped with a pressure roller through a third pressure wheel seat, and the third moving frame is also connected to a fourth driving cylinder arranged on the third slide seat; the fourth driving cylinder drives the third moving frame to drive the pressure roller to move along the fourth linear guide rail, matching the pressure holding of the diaphragm during the diaphragm welding and cutting process, and / or pressing the positive electrode sheet during the positive electrode sheet wrapping process and cooperating with the plug-in winding needle unit to complete the wrapping and winding of the positive electrode sheet of the battery cell.

[0013] In the above technical scheme, the positive electrode sheet lifting component includes a mounting frame arranged vertically on the panel, and a translation cylinder is arranged vertically on the end of the mounting frame away from the panel, and the translation cylinder is connected to a movable seat through a transmission. The movable seat is equipped with a suction sheet rotating shaft arranged parallel to the mounting frame through a bearing, and the suction sheet rotating shaft is connected to a pole piece suction sheet rod for installing a vacuum suction cup through a swing arm, and the suction sheet rotating shaft is also connected to a fifth driving cylinder arranged on the movable seat through a suction sheet driving block and a linkage block; the translation cylinder drives the movable seat to translate, so that the pole piece suction sheet rod and the vacuum suction cup are moved to one side of the end face of the positive pole piece, and cooperates with the fifth driving cylinder to drive the suction sheet rotating shaft to rotate, so that the pole piece suction sheet rod swings and the vacuum suction cup is vacuum-adsorbed, thereby matching to lift the positive pole sheet.

[0014] The winding mechanism of the present invention sets a positive electrode sheet lifting component in a relatively small mechanism space, and lifts the positive electrode sheet when the battery cell is wound to the end position, thereby facilitating the cutting and welding of the two diaphragms, and after the welding is completed, the positive electrode sheet is wrapped and wound to meet the positive electrode sheet outsourcing process requirements. The winding mechanism of the present invention solves the problem that small and medium-sized square battery cell winding equipment in the related technical field is difficult to realize the outsourcing of positive electrode sheets due to space constraints, and realizes the outsourcing of positive electrode sheets for small square battery cells.

[0015] In the second aspect, another technical solution adopted by the present invention is as follows: a double-station winding machine, including a square battery cell positive electrode sheet outer wrapping winding mechanism as described in the first aspect, and also including: a diaphragm unwinding mechanism, including two diaphragm unwinding assemblies, used to correct and distribute the two diaphragms of the battery cell to the upper winding station of the winding mechanism; a pole piece unwinding mechanism, including two pole piece correction unwinding assemblies, the two pole piece correction unwinding assemblies are symmetrically arranged on both sides of one of the two diaphragm unwinding assemblies, and are used to unwind, measure the length, brush powder to remove iron, correct the deviation of the positive and negative pole sheets of the battery cell in turn and feed them to the pole piece feeding and cutting mechanism; the pole piece feeding and cutting mechanism, It comprises two sheet feeding and cutting components, which are respectively docked with the matching electrode sheet deviation correction and unwinding components, and are used to feed the positive electrode sheet / negative electrode sheet unwound by the matching electrode sheet deviation correction and unwinding components to the upper winding station of the winding mechanism, and cut the positive electrode sheet / negative electrode sheet after the winding mechanism winds the positive electrode sheet / negative electrode sheet to a set length; a gluing mechanism is arranged beside the lower winding station, and is used to affix the termination tape to the tail of the battery cell that has completed the positive electrode sheet edge wrapping and winding; a material unloading mechanism is docked with the winding mechanism and the gluing mechanism at the lower winding station, and unloads the material after the battery cell is subjected to winding defect detection, battery cell pressing and short circuit test.

[0016] As a further elaboration of the above technical solution:

[0017] In the above technical scheme, each diaphragm unwinding assembly includes a base fixedly arranged on the panel, a guide rail extending along the vertical panel is arranged on the base, a slide is arranged on the guide rail, the slide is fixedly connected to a linkage plate, the linkage plate is connected to the base through a ball screw and a linear guide sleeve assembly, the ball screw is also connected to a deviation correction motor arranged on the linkage plate through a coupling, the deviation correction motor can drive the linkage plate to drive the slide to slide along the guide rail, a diaphragm unwinding expansion shaft that is movable and passes through the panel is nested on the slide, and the The diaphragm unwinding expansion shaft is transmission-connected to the expansion shaft cylinder arranged on the linkage plate through the expansion shaft connector, and the diaphragm unwinding expansion shaft is also transmission-connected to the unwinding drive motor arranged on the linkage plate through a synchronous wheel transmission pair; the linkage plate is also connected to the roller support plate through a sliding rod that movably penetrates the panel, and the roller support plate is equipped with a plurality of diaphragm rollers arranged in sequence along the diaphragm feeding direction and a diaphragm electrostatic rod installed through a bracket through bearings, and the roller support plate is also provided with a diaphragm tension roller that is transmission-connected to the sixth drive cylinder through a pivoting swing arm and is used to tension the diaphragm.

[0018] In the above technical scheme, the two pole piece correction and unwinding assemblies each include a correction and unwinding assembly, a position correction assembly, a color mark detection assembly, a tension assembly, at least one powder brushing device, at least one iron removal device, a length measurement assembly and a process correction assembly which are sequentially arranged along the pole piece feeding direction; wherein, the correction and unwinding assembly includes a first base arranged on a panel, a first guide rail extending in a direction perpendicular to the panel is arranged on the first base, a first slide is arranged on the first guide rail, the first slide is fixedly connected to a follower plate, the follower plate is connected to the first base through a first ball screw and a first linear guide sleeve assembly, the first ball screw is also connected to a first correction motor arranged on the follower plate through a first coupling, and the first correction The motor can drive the follower plate to drive the first slide to slide along the first guide rail, and a pole piece unwinding shaft that movably passes through the panel is embedded on the first slide. One end of the pole piece unwinding shaft is connected to the first unwinding motor arranged on the follower plate through a synchronous belt transmission pair, and the other end is connected to the expansion shaft body that carries the pole piece coil. The first unwinding motor can drive the pole piece unwinding shaft to drive the expansion shaft body to rotate for matching unwinding; a tensioning cylinder is arranged at one axial end of the pole piece unwinding shaft, and the tensioning cylinder can drive the tensioning mandrel that passes through the pole piece unwinding shaft and movably docked with the expansion shaft body to insert / exit the expansion shaft body, so that the expansion shaft body tightens the pole piece coil, and the follower plate is also connected to a roller bracket provided with a pole piece roller through a first slide rod that movably passes through the panel; the position The deflection correction component comprises a deflection correction frame mounted on the vertical panel, two deflection correction adjustment guide rods are fixedly arranged on the end of the deflection correction frame away from the panel, a deflection correction adjustment slider is arranged on the deflection correction adjustment guide rod, a mounting plate for mounting a deflection correction sensor is fixedly connected to the deflection correction adjustment slider, and the deflection correction adjustment slider can also be driven by a differential head installed on the front positioning block to drive the deflection correction adjustment slider to slide along the deflection correction adjustment guide rod to match the position correction of the pole piece; the color mark detection component comprises a detection bracket mounted on the vertical panel, two optical axes are fixedly arranged on the end of the detection bracket away from the panel, a detection mounting seat driven to slide by an adjustment screw arranged between the two optical axes is movably arranged on the optical axis, and a color mark sensor is fixedly arranged on the detection mounting seat; the tension component comprises a fixed The tension roller on the roller frame is connected to the sixth driving cylinder fixed on the panel through the tension swing arm shaft nested on the panel, and the sixth driving cylinder can drive the tension roller to swing through the tension swing arm shaft to drive the roller frame to adjust the tension of the pulled pole piece; each of the powder brushing devices includes a pole piece powder brushing roller installed in a powder suction box and driven to rotate by a driving motor, the powder suction box is fixed to the panel through a powder suction box bracket, and a first pressure roller is provided at a position matching each powder suction box on the panel, and the first pressure roller presses the pole piece against the matching pole piece powder brushing roller to perform powder brushing and dust removal; each of the iron removal devices includes a magnet installed in an iron removal seat, and the iron removal seat is fixed to the panel through a T-shaped mounting seat;The length measuring assembly includes a length measuring angle seat fixed to the panel, the length measuring angle seat is connected to the pressure roller seat on which the length measuring pressure roller is installed through a linear guide rod, the pressure roller seat is also connected to the seventh driving cylinder fixed on the length measuring angle seat, the length measuring angle seat is also movably connected to the length measuring roller that matches the length measuring pressure roller in position through a bearing, the length measuring roller is also connected to an encoder arranged at one end of its axial direction and used to measure the unwinding length of the pole piece through a coupling; the process correction assembly includes a correction base fixed to the panel, the correction base is connected to the correction roller mounting seat on which the process correction roller is installed through a correction swing angle bearing, the correction base is also provided with a rotating shaft, a support is fixed on the rotating shaft, the support is provided with an electric ball screw transmission pair that is transmission-connected to the correction roller mounting seat through a screw connector and a support shaft, the correction roller mounting seat is also movably connected to the correction base through a support plate, a cam bearing and a slide seat. ;

[0019] In the above technical scheme, the two sheet feeding and cutting assemblies both include a sheet feeding base installed on the panel, a ball screw slide is arranged on the sheet feeding base, the ball screw slide is connected to a slide plate through transmission, a first ball screw slide is fixed on the slide plate, the slide plate is also connected to the pole piece cutting assembly through a cutter connecting block, and the first ball screw slide is connected to a sheet feeding clamp assembly movably docked with the pole piece cutting assembly through a sheet feeding connecting block; the ball screw slide drives the slide plate to drive the pole piece cutting assembly and the first ball screw slide to move, so that the pole piece cutting assembly, the sheet feeding clamp assembly and the pole piece clamped by the sheet feeding clamp assembly move toward the upper winding station, cooperate with the first ball screw slide to drive the sheet feeding clamp assembly to move, match the sheet feeding clamp assembly to clamp the positive pole piece / negative pole piece toward the matching pole piece cutting assembly to complete the sheet feeding, and / or make the pole piece cutting assembly cut after the winding mechanism winds the positive pole piece / negative pole piece to a set length; the sheet feeding clamp assembly includes A sheet feeding support plate connected to a sheet feeding connection block, a fixed pressure block is fixedly arranged on one side of the sheet feeding support plate in the width direction, the fixed pressure block is fixedly connected to a fixed sheet feeding clamp, and a pressure roller is installed through a support seat, a support block is fixedly arranged on the other side of the sheet feeding support plate in the width direction, the support block is movably connected to a movable roller seat through a guide rod, a sheet feeding pressure roller which is directly opposite to the pressure roller in position and a movable sheet feeding clamp which is directly opposite to the fixed sheet feeding clamp in position, the movable roller seat is also connected to a sheet feeding support plate The pole piece cutting assembly includes a cutter seat fixedly connected to the cutter connecting block, a fixed cutter seat for installing a fixed cutter is fixedly arranged on the cutter seat, a ninth driving cylinder is arranged at the end of the cutter seat facing away from the fixed cutter seat, the ninth driving cylinder is connected to the movable cutter seat through a linkage block in cooperation with two guide posts which penetrate the cutter seat and extend to the side where the fixed cutter seat is arranged, and the movable cutter seat is movably connected to the cutter pressure plate which is opposite to the fixed cutter in position through a first guide rod in cooperation with a spring.

[0020] In the above technical scheme, the glue-applying mechanism includes an upper glue bottom plate fixed to the panel, a glue-applying base is arranged on the upper glue bottom plate, a vertical plate extending in a direction perpendicular to the panel is fixed on one side in the length direction of the glue-applying base, and a tape reel, a pre-stretched tape assembly and a pull-cut tape assembly are arranged in sequence on one side wall of the vertical plate along its extension direction, the pull-cut tape assembly is used to receive the tape pre-stretched and relaxed from the tape reel by the pre-stretched tape assembly and pull the tape of a set length and then cut it into tape sheets; it also includes an upper tape assembly arranged on the glue-applying base and docked with the pull-cut tape assembly, the upper tape assembly can deliver the tape sheet to the lower winding station to complete the glue-applying of the tail of the battery cell where the positive electrode sheet is wrapped. ; Wherein, the pre-stretching tape assembly includes a plurality of tape rollers arranged perpendicular to the vertical plate, and the plurality of tape rollers are arranged at intervals along the extension direction of the vertical plate, and a pre-stretching roller arranged on a pre-stretching slider is also arranged between two of the plurality of tape rollers, and the pre-stretching slider is passed through a vertically arranged guide shaft and is connected to the pre-stretching cylinder in transmission; the pulling and cutting tape assembly includes a tape pulling cylinder arranged on the vertical plate, and the tape pulling cylinder is connected to a first slide plate hung on two fourth linear guide rails through a cylinder connecting block, and a top rubber bottom plate is also hung on the two fourth linear guide rails, and a tape back-pressing assembly, a tape cutting assembly and a tape middle-pressing assembly which are arranged in sequence along the extension direction of the vertical plate are provided on the first slide plate, and the top rubber The bottom plate is fixed with a front tape pressing assembly; the tape pulling cylinder can drive the first slide plate to drive the tape rear pressing assembly, the tape cutting assembly and the tape middle pressing assembly to move toward / away from the tape front pressing assembly, cooperate with the tape rear pressing assembly, the tape middle pressing assembly and the tape front pressing assembly to clamp the tape and the tape cutting assembly to cut the tape, so as to match the pre-stretched and relaxed tape to be sent forward and cut into tape pieces of set length; the tape front pressing assembly includes a top glue cylinder fixedly mounted on the top glue bottom plate, the top glue cylinder is connected to the top glue block, the top glue cylinder drives the top glue block to move toward the upper tape assembly and press the vacuum adsorption glue roller of the upper tape assembly to press the tape; the tape The rear pressure assembly includes a rear glue pressing cylinder fixedly mounted on the first slide plate, the rear glue pressing cylinder can drive the rear glue pressing block to move vertically and cooperate with the glue pressing stopper located just above the rear glue pressing block and fixedly connected to the first slide plate to clamp the adhesive tape; the adhesive tape intermediate pressure assembly includes an intermediate glue pressing cylinder fixedly mounted on the first slide plate, the intermediate glue pressing cylinder can drive the intermediate glue pressing block to move vertically until it presses against the top glue block located just above the intermediate glue pressing block to clamp the adhesive tape; the adhesive tape cutting assembly includes a glue cutting cylinder vertically mounted on the first slide plate, the glue cutting cylinder can drive the glue cutting knife to move vertically and cut the adhesive tape matched and clamped by the adhesive tape rear pressure assembly, the adhesive tape intermediate pressure assembly and the adhesive tape front pressure assembly into adhesive tape sheets;The upper adhesive tape assembly includes a tenth driving cylinder installed at the other end of the adhesive base in the length direction, the tenth driving cylinder is connected to the first mounting seat of the rotating arm cylinder, the rotating arm cylinder is pivotally connected to the adhesive rotating block arranged on the U-shaped bracket through the joint bearing and the adhesive rotating arm, the rotating arm cylinder can drive the adhesive rotating block to swing relative to the U-shaped bracket and drive the adhesive suction and pasting assembly arranged thereon to absorb the adhesive tape sheet cut by the pulling and cutting adhesive tape assembly and send it to the tail of the battery cell where the positive electrode sheet is wrapped, the adhesive suction and pasting assembly includes a adhesive roller mounting seat fixed on the adhesive rotating block, the adhesive roller mounting seat is equipped with a vacuum adsorption adhesive roller through a bearing, the vacuum adsorption adhesive roller is also connected to the driving motor fixed on the U-shaped bracket through the first synchronous belt transmission pair and driven to rotate by the driving motor to apply adhesive. ;

[0021] In the above technical scheme, the unloading mechanism includes a cell taking assembly, a bad winding rejection assembly, an upper lifting cell connecting assembly, a cell receiving assembly, a cell moving assembly, a core pressing short circuit testing assembly, a rejection assembly and a good product conveying assembly, which are arranged on the panel and are sequentially connected along the unloading direction; wherein, the cell taking assembly includes a fifth linear guide rail extending along the unloading direction, and the fifth linear guide rail is connected to a horizontal receiving rack via a core connecting block, and the core connecting block is also connected to a material taking cylinder for transmission; the material taking cylinder drives the core connecting block to drive the horizontal receiving rack to move, so as to match the cells received from the lower winding station and transferred toward the upper lifting core connecting assembly; the bad winding rejection assembly is arranged between the cell taking assembly and the upper lifting core connecting assembly The lifting and connecting core assembly comprises a first mounting plate arranged on the vertical panel, a sixth linear guide rail extending from the vertical panel is arranged on the first mounting plate, a core connecting slide plate is arranged on the sixth linear guide rail, and the core connecting slide plate can be driven by a transverse cylinder arranged on the first mounting plate to slide along the sixth linear guide rail, a seventh linear guide rail is vertically arranged on the core connecting slide plate, a core suction slide seat is arranged on the seventh linear guide seat, a core suction slide seat is fixedly connected to a core suction mounting block, and the core suction slide seat At least one row of vacuum nozzles is provided on the mounting block, and the core suction slide is also connected to the lifting cylinder fixed on the core connecting slide; the transverse cylinder drives the core connecting slide to move in matching manner, and cooperates with the lifting cylinder to drive the core suction slide to drive the core suction mounting block and the vacuum nozzle to move vertically, so as to suck up and lift the battery core transferred by the battery core assembly and move it horizontally to just above the battery core connecting assembly; the battery core connecting assembly includes a second mounting plate arranged vertically on the panel, and a connecting cylinder for connecting the connecting support block is vertically installed on the second mounting plate, and the connecting cylinder drives the connecting support block to move vertically and movably dock with the front support plate of the upper lifting battery core connecting assembly and the core pressing short circuit test assembly, so as to match the battery core connected by the upper lifting battery core connecting assembly. The battery cell that is lifted up and fed laterally is then moved to a position flush with the front support plate; the battery cell moving assembly comprises an eighth linear guide rail extending in the direction of material removal, a slider seat is arranged on the eighth linear guide rail, the slider seat is drivingly connected to a moving cylinder arranged on the panel, a vertically arranged lifting cylinder is fixed on the slider seat, the lifting cylinder is drivingly connected to a core pulling claw frame that is located directly above the receiving support block and the front support plate at the setting position; the moving cylinder drives the slider seat to slide along the eighth linear guide rail, cooperates with the lifting cylinder to drive the core pulling claw frame to move vertically, and matches to move the battery cell from the receiving support block, the front support plate and the heating block of the core pressing short circuit test assembly to the front support plate, the heating block and the good product conveying assembly;The core short-circuit test assembly also includes a first fixed plate and a second fixed plate connected by a connecting rod, the heating block is fixedly arranged on the first fixed plate, and a pole ear contact block driven by a first cylinder to move vertically is arranged on the side of the heating block, the second fixed plate is connected to a down-pressing heat-insulating seat on which the down-pressing heating block is installed through a down-pressing guide rod, the down-pressing heat-insulating seat is also connected to a down-pressing cylinder arranged on the second fixed plate, and the down-pressing heat-insulating seat is also movably connected to the pole ear down-pressing block through a third guide rod and a spring, the down-pressing heating block is matched and opposite to the heating block in position, and the pole ear down-pressing block is in position The upper part matches and faces the contact block of the pole ear; the rejection assembly includes a rejection hanging plate fixedly connected to the second fixed plate through a connecting piece, the rejection hanging plate is equipped with a suction nozzle sliding block that can slide along the vertical feeding direction through a round rod, the suction nozzle sliding block is connected to the second cylinder arranged on the rejection hanging plate by driving, the suction nozzle sliding block is also connected to the suction nozzle mounting plate for mounting the pneumatic suction nozzle through a telescopic guide rod, and the suction nozzle mounting plate is also connected to the material taking cylinder arranged on the suction nozzle sliding block by driving; the good product conveying assembly is a conveyor belt docked with the pressure core short circuit test assembly, and is used to convey the good product battery cells for feeding. ;

[0022] The winding machine of the present invention can realize the outwrapping and winding of the positive electrode sheet of a small square battery cell, and the structural layout of the winding machine is reasonable and the operation is convenient; the winding machine of the present invention adopts a two-winding station structure, which has a simple structure and a reasonable distribution of station functions compared to the three-winding station structure on the market, and effectively reduces the processing and manufacturing costs; the plug-in winding assembly of the winding machine of the present invention adopts a coaxial double winding needle setting, wherein the first winding needle is the main winding needle, and the second winding needle is an auxiliary winding needle for inserting the sheet, which can be selected to be opened or closed according to the production needs of the battery cell process, and the introduction of the inserting sheet can effectively reduce the "S" deformation of the battery cell and improve the yield rate of the wound battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional view of the winding mechanism of the present invention;

[0024] Figure 2 yes Figure 1 A frontal view of

[0025] Figure 3 is a three-dimensional view of a winding assembly of the winding mechanism of the present invention;

[0026] Figure 4 is another stereoscopic view of a winding assembly of the winding mechanism of the present invention;

[0027] Figure 5 It is an exploded view of the plug-in type needle winding unit of the present invention;

[0028] Figure 6 It is a three-dimensional view of the positive electrode sheet lifting assembly of the present invention;

[0029] Figure 7 is a three-dimensional diagram of the winding machine of the present invention;

[0030] Figure 8 It is a front view of the winding machine of the present invention;

[0031] Fig. 9 It is a three-dimensional diagram of the membrane unwinding mechanism of the winding machine of the present invention

[0032] Fig.10 It is a three-dimensional diagram of the pole piece unwinding mechanism of the winding machine of the present invention;

[0033] Fig.11 is a three-dimensional diagram of the deviation-correcting unwinding assembly of the present invention;

[0034] Fig.12 is a stereogram of the process deviation correction assembly of the present invention;

[0035] Fig.13 It is a three-dimensional diagram of the electrode feeding and cutting mechanism of the present invention;

[0036] Fig.14 It is a three-dimensional diagram of the glue sticking mechanism of the present invention;

[0037] Fig.15 It is a stereoscopic view of the blanking mechanism of the present invention. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] Example 1

[0040] Reference Figure 1 To Attachment Figure 6 , a square battery cell positive electrode sheet outwrapping winding mechanism according to an embodiment of the present invention is used to wind small square battery cells and complete the positive electrode sheet outwrapping winding. The winding mechanism of this embodiment sets a positive electrode sheet lifting component in a smaller mechanism space, and lifts the positive electrode sheet when the battery cell is wound to the end position, thereby facilitating the cutting and welding of the two diaphragms. After the welding is completed, the positive electrode sheet is wrapped and wound to meet the positive electrode sheet outwrapping process requirements. The winding mechanism of the present invention solves the problem that small and medium-sized square battery cell winding equipment in the related technical field is difficult to realize the outwrapping winding of the positive electrode sheet due to space constraints, and realizes the outwrapping winding of the positive electrode sheet of small square batteries.

[0041] Reference Figure 1 To Attachment Figure 6 , a square battery cell positive electrode sheet outer wrapping winding mechanism 800 according to an embodiment of the present invention includes a panel (attached Figure 1 To Attachment Figure 6The winding assembly 100 (not shown) is provided on the panel and is provided on the outer side of the winding assembly 100, and the electrode sheet pressing assembly 200, the diaphragm pressing assembly 300, the diaphragm welding and cutting assembly 400, the positive electrode sheet lifting assembly 500 and the finishing assembly 600 are provided. The winding assembly 100 includes two plug-in winding needle units 11 that can rotate alternately between the upper winding station 001 and the lower winding station 002. The plug-in winding needle unit 11 located at the upper winding station 001 can receive the diaphragm 01, the negative electrode sheet 02 and the positive electrode sheet 03 at the upper winding station and rotate to the lower winding station 002 after completing the pre-winding and inserting the sheet to perform the positive electrode sheet edge wrapping and finishing, that is, the pre-winding and post-insertion winding of the small square battery cell until it is wound to All windings before welding and cutting of the diaphragm 01 are carried out at the upper winding station 001. After completing the above winding, the winding assembly 100 changes stations, and the plug-in winding needle unit 11 that has completed the above winding is wound together with the battery cell to the lower winding station 002. During the station change process, the plug-in winding needle unit 11 stops working. After rotating to the lower winding station 002, the plug-in winding needle unit 11 continues the previous winding and matches to complete the outpacking of the positive electrode sheet 03. The plug-in winding needle unit 11 that was located at the lower winding station 002 in the previous period is matched and rotated to the upper winding station 001 to prepare for the winding of the next battery cell. The so-called pre-winding is to first wind the wound battery cell to a certain thickness according to the winding requirements, and then choose to insert the sheet.

[0042] The pole piece pressing assembly 200 includes two pole piece pressing devices 21 symmetrically arranged on both sides of the winding upper auxiliary device 700. The two pole piece pressing devices 21 are used to cooperate with the winding upper auxiliary device 700 to press the unwound negative pole piece 02 and positive pole piece 03 against the diaphragm 01 and / or pull them in. In practice, since the diaphragm 01, the negative electrode sheet 02 and the positive electrode sheet 03 are distributed in the order of diaphragm 01, negative electrode sheet 02, diaphragm 01, positive electrode sheet 03 from left to right, the electrode sheet pressing device 21 located on the left side realizes electrode sheet pressing by pressing the diaphragm 01 to the negative electrode sheet 02 so that the negative electrode sheet is pressed against the diaphragm 01 and / or pulled into the sheet. The so-called pulling into the sheet is through the pressing of the electrode sheet pressing assembly 21, so that the front end of the electrode sheet is guided toward the winding auxiliary device 700, and the positive and negative electrode sheets are sent into the plug-in winding needle unit 11 in cooperation with the conduction of the guide roller on the winding auxiliary device 700. At the same time, the electrode sheet pressing device 21 located on the left side can also be used to press the diaphragm 01.

[0043] The diaphragm pressing assembly 300 includes two symmetrically arranged diaphragm pressing devices 31, which are used to press the diaphragm 01 against the negative electrode sheet 02 and the positive electrode sheet 03 during the pre-rolling, insert winding and rotation from the upper winding station 001 to the lower winding station 002 of the plug-in needle winding unit 11, and / or to press the two diaphragms 01 to clamp the negative electrode sheet 02 during the diaphragm welding and cutting process of the diaphragm welding and cutting assembly 400. In practice, during the process of pre-winding, insert winding and rotation from the upper winding station 001 to the lower winding station 002 by the plug-in winding needle unit 11, the diaphragm 01 has not yet been welded and cut, and the diaphragm 01 is still being unwound. The diaphragm pressing device 31 on the right side presses the positive electrode sheet 03 to press the diaphragm 01 tightly against the positive electrode sheet 03, and the diaphragm pressing device 31 on the left side presses the diaphragm 01 to press the diaphragm 01 tightly against the negative electrode sheet 02. Of course, during this process, both the positive electrode sheet 03 and the negative electrode sheet 02 are being unwound. When the plug-in needle winding unit 11 rotates to the lower winding station 002, the diaphragm welding and cutting assembly 400 is in the process of diaphragm welding and cutting, and the plug-in needle winding unit 11 is in the process of positive electrode sheet outer wrapping and winding, the two diaphragm pressing devices 31 on the left and right sides both press the diaphragm 01 to clamp the negative electrode sheet 02 between the two diaphragms 01 to ensure the corresponding tension, and keep the diaphragm 01 and the negative electrode sheet 02 from loosening during the diaphragm welding and cutting and positive electrode sheet outer wrapping and winding.

[0044] The positive electrode sheet lifting assembly 500 is used to lift the positive electrode sheet 03 and enable the diaphragm welding and cutting assembly 300 to weld and cut the two diaphragms 01. In practice, the positive electrode sheet 01 is lifted off from the wound diaphragm 01, the negative electrode sheet 02 and the separator 01, so as to ensure that the positive electrode sheet 03 can continue to be wound after the diaphragm 01 is welded and cut. At the same time, the positive electrode sheet lifting assembly 500 is also arranged in a position so that when the positive electrode sheet 03 is lifted, the diaphragm welding and cutting assembly 300 can extend between the positive electrode sheet lifting assembly 500 and the diaphragm pressing assembly 300, so as to weld and cut the diaphragm 01. It should be understood that in order to complete the outpacking of the positive electrode sheet, in practice, the length of the positive electrode sheet 03 is longer than that of the negative electrode sheet 02, that is, after the negative electrode sheet 02 is clamped and wound by the two diaphragms 01, the positive electrode sheet 03 still has a set winding length left outside, and this part is lifted up by the positive electrode sheet lifting component 500, so that the diaphragm 01 is cut and welded, and then the positive electrode sheet 03 starts to be wrapped and wound from the welding and cutting position of the diaphragm 01.

[0045] The finishing component 600 is used to hold the diaphragm 01 during the diaphragm welding and cutting process, and / or hold the positive electrode sheet 03 during the positive electrode sheet wrapping process, and cooperate with the plug-in needle winding unit 11 (located at the lower winding station) to complete the wrapping and winding of the positive electrode sheet of the battery cell. In practice, when the diaphragm is welded and cut, the finishing component 600 holds the diaphragm 01 on the outside of the battery cell to be wrapped with the positive electrode sheet, so that the partially wound battery cell will not be loose. After the diaphragm is welded and cut, the finishing component 600 presses the positive electrode sheet 03 against the partially wound battery cell, thereby ensuring that the positive electrode sheet is tightly wrapped.

[0046] In some of these embodiments, reference is made to the attached Figure 1 To Attachment Figure 5 , two plug-in needle winding units 11 are installed on the revolving component 12, and the revolving component 12 includes a base seat 121 fixed to the panel, and a main shaft turntable 122 is coaxially mounted on the base seat 121. The main shaft turntable 122 rotates by meshing the transmission gear 123 arranged at one axial end thereof with the driving gear 126 arranged on the driving shaft of the reducer 125 driven by the revolving motor 124, and drives the two plug-in needle winding units 11 nested on the main shaft turntable 122 to rotate alternately between the upper winding station 001 and the lower winding station 002. In practice, the plug-in needle winding unit 11 is nested and assembled in the main shaft turntable 122, that is, the plug-in needle winding unit 11 can not only rotate with the main shaft turntable 122, but also rotate relative to the main shaft turntable 122 to perform winding; it can also move along the axial direction of the main shaft turntable 122 to perform needle removal and needle pushing. Refer to the attached Figure 5Each plug-in needle winding unit 11 includes a needle winding center shaft 111, a needle winding 113 connected to the needle winding center shaft 111 through a needle winding connector 112, and a needle winding core shaft 115 movably inserted into the needle winding center shaft 111 and connected to a plug 114 movably inserted into the needle winding connector 112; the needle winding center shaft 111 is movably assembled on the main shaft turntable 122 through a winding outer shaft 116 and a shaft sleeve (not numbered in the figure), and a first transmission gear 117 is provided on the needle winding outer shaft 116, and the first transmission gear 117 is meshed and connected with a driven gear 141 provided on two coaxial transmission shafts 14, and both transmission shafts 14 are driven by synchronous belts. The auxiliary gear 15 is connected to the winding drive motor 16 in transmission, and the transmission shaft 14 is driven by the corresponding winding drive motor 16 to rotate and drive the two plug-in winding needle units 11 to rotate relative to the main shaft turntable 122 to complete the winding of the battery cell; in practice, the two first transmission gears 117 are complementary and interfere with each other during transmission, and the first transmission gear 117 is engaged with the driven gear 141 to transmit, so that the outer shaft 116 of the winding needle is rotated, and the transmission shaft 14 that drives the corresponding driven gear 141 to rotate is also connected to different winding drive motors 16 in transmission, so that the corresponding plug-in winding needle unit 11 can be driven by the winding drive motor 16 to rotate in the upper winding station 0 01 and the lower winding station 002 can drive the corresponding plug-in needle winding unit 11 to rotate and wind; each needle winding center axis 111 is also provided with a shaft tail wheel 118 at one axial end away from the needle winding connector 112, and the end of the needle winding core shaft 115 extending out of the needle winding center axis 111 provided with the shaft tail wheel 118 is provided with a shaft tail dial wheel 119; each plug-in needle winding unit 11 is also connected to a pull-out device 17 provided on the vertical panel, and the pull-out device 17 includes a mounting plate 171 provided on the vertical panel, and a linear guide rail 172 is provided on the mounting plate 171, and a needle output dial block 173 and a dial pull block 174 are movably installed on the linear guide rail 172, and the needle output dial block 1 73 and the paddle pull block 174 are respectively connected to the driving cylinder 176 fixed on the mounting plate 171 through the connecting block 175 and can be driven by the matching driving cylinder 176 to slide along the linear guide 172. The needle ejection paddle block 173 and the paddle pull block 174 are also arranged to be movably docked with the shaft tail wheel 118 and the shaft tail paddle wheel 119 respectively in the setting position, and drive the plug-in needle winding unit 11 to eject or retract the needle during the sliding of the needle ejection paddle block 173 along the linear guide 172, and / or drive the plug 114 to insert / extract the wound battery cell parallel to the winding needle 113 during the sliding of the paddle pull block 174 along the linear guide 172.

[0047] It is understood that in some of these embodiments, reference is made to the accompanying Figure 1 To Attachment Figure 2The two-electrode sheet pressing device 21 includes a negative electrode sheet pressing device 22 and a positive electrode sheet pressing device 23. The negative electrode sheet pressing device 22 and the positive electrode sheet pressing device 23 both include a slide block 211 arranged vertically on the panel. The slide block 211 is connected to a moving frame 213 through a first linear guide rail 212 arranged vertically thereto. One end of the moving frame 213 matching its moving direction (vertical to the axial direction of the spindle turntable 122) is equipped with a pole sheet pressing roller 215 through a pressing wheel seat 214. The positive electrode sheet pressing device 23 The pressure wheel seat 214 is also connected to the sheet entry guide block 231 adapted to the winding auxiliary device 700, and the movable frame 213 is also connected to the first driving cylinder 216 arranged on the slide seat 211; the first driving cylinder 216 drives the movable frame 213 to drive the electrode pressure roller 215 and / or the sheet entry guide block 231 to move along the first linear guide rail 212, matching the unwinding negative electrode sheet 02 and the positive electrode sheet 03 to be pressed against the diaphragm 01 and / or pulled into the sheet. In this embodiment, the two diaphragm pressing devices 31 both include a first slide seat 311 arranged vertically on the panel, and the first slide seat 311 is connected to the first movable frame 313 through a second linear guide rail 312 arranged vertically thereto, and the first movable frame 313 is matched with one end of its moving direction and is equipped with a diaphragm pressing roller 315 through a first pressure wheel seat 314, and the first movable frame 313 is also connected to the second driving cylinder 316 arranged on the first slide seat 311; the second driving cylinder 316 drives the first movable frame 313 to drive the diaphragm pressing roller 315 to move along the second linear guide rail 312, so as to match the diaphragm 01 with the negative electrode sheet 02 and the positive electrode sheet 03 and / or press the two diaphragms 01 to clamp the negative electrode sheet 02. In this embodiment, the diaphragm welding and cutting assembly 400 includes a symmetrically arranged hot and cold welding and cutting device 41 and a welding and cutting auxiliary device 42. The hot and cold welding and cutting device 41 and the welding and cutting auxiliary device 42 both include a second slide seat 411 arranged vertically on the panel. The second slide seat 411 is connected to the welding and cutting frame 413 through a third linear guide rail 412 arranged vertically thereto. The welding and cutting frame 413 of the hot and cold welding and cutting device 41 is connected to the hot cutting welding knife 414 through an insulation pad (not shown in the drawings). The lower part of the hot cutting welding knife 414 is also provided with a fixed connection with the welding and cutting frame 413. The diaphragm cold cutting knife 415, the welding and cutting frame 413 of the welding and cutting auxiliary device 42 is fixedly connected to the setting position and matches the hot cutting welding knife 414 and the diaphragm cold cutting knife 415 with the welding and cutting pad 421 facing the welding and cutting pad. The welding and cutting frame 413 is also connected to the third driving cylinder 416 provided on the second slide seat 411; the third driving cylinder 416 drives the welding and cutting frame 413 to slide along the third linear guide rail 412, matching the hot cutting welding knife 414 and the diaphragm cold cutting knife 415 to move towards each other with the welding and cutting pad 421, matching to perform welding and cutting on the diaphragm.In this embodiment, the finishing component 600 includes a third slide seat 61 arranged vertically on the panel, and the third slide seat 61 is connected to the third movable frame (not shown in the drawings) through a fourth linear guide rail 62 arranged vertically thereto, and the third movable frame is equipped with a pressure roller 63 at one end matching its moving direction through a third pressure wheel seat (not shown in the drawings), and the third movable frame is also connected to the fourth driving cylinder 64 arranged on the third slide seat 61; the fourth driving cylinder 64 drives the third movable frame to drive the pressure roller 63 to move along the fourth linear guide rail 62, matching the pressure holding of the diaphragm 01 during the diaphragm welding and cutting process, and / or pressing the positive electrode sheet 03 during the positive electrode sheet wrapping process and cooperating with the plug-in winding needle unit 11 to complete the wrapping and winding of the positive electrode sheet of the battery cell.

[0048] It is understood that in some of the embodiments, reference is made to the accompanying Figure 1 , Attachment Figure 2 and attached Figure 6 , the positive electrode sheet lifting component 500 includes a mounting frame 51 arranged vertically on the panel, and the mounting frame 51 is vertically provided with a translation cylinder 52 away from the end connected to the panel, and the translation cylinder 52 is connected to the moving seat 53 through transmission, and the moving seat 53 is equipped with a suction sheet rotating shaft 54 ​​arranged parallel to the mounting frame 51 through a bearing, and the suction sheet rotating shaft 54 ​​is connected to the pole piece suction sheet rod 56 installed with the vacuum suction cup 55 through a swing arm 510, and the suction sheet rotating shaft 53 is also connected to the fifth driving cylinder 59 arranged on the moving seat 53 through the suction sheet driving block 57 and the linkage block 58; the translation cylinder 52 drives the moving seat 53 to translate, so that the pole piece suction sheet rod 56 and the vacuum suction cup 55 move to one side of the end face of the positive electrode sheet 03, and cooperates with the fifth driving cylinder 59 to drive the suction sheet rotating shaft 53 to rotate, so that the pole piece suction sheet rod 56 swings and the vacuum suction cup 55 is vacuum-absorbed, so as to lift the positive electrode sheet 03. It should be noted that the function of the positive electrode sheet outsourcing lifting component is to lift the positive electrode sheet 03 separately when the battery cell is wound to the end, and after lifting, the diaphragm welding component 400 completes the welding and cutting of the diaphragm, and then continues to wind, so as to meet the needs of the battery cell positive electrode sheet outsourcing process, and the specific working process includes the following steps: Step 1: The translation cylinder 52 is extended to the standby position, and the suction sheet rotating shaft 53 is also in the lifting standby position; Step 2: When the positive electrode sheet needs to be lifted, the translation cylinder 52 retracts, so that the vacuum suction cup 55 and the electrode sheet suction rod 56 enter the suction sheet working position; Step 3: The fifth The driving cylinder 59 extends through the swing arm 510, the connecting block 58, the suction cup shaft 53, and the electrode suction rod 56 to drive the vacuum suction cup 55 to contact the positive electrode sheet, and the suction cup vacuum absorbs the electrode sheet; Step 4: The fifth driving cylinder 59 retracts through the swing arm 510, the connecting block 58, the suction cup shaft 53, and the electrode suction rod 56 to drive the vacuum suction cup 55 to lift the absorbed positive electrode sheet 03 to the lifting standby position; Step 5: After the positive electrode sheet is lifted, the diaphragm is welded and cut off, and the vacuum suction cup 55 releases the positive electrode sheet 03 and continues to wind it, completing the positive electrode sheet outsourcing lifting function.

[0049] Example 2

[0050] The present invention also provides a double-station winding machine, Figure 1 To Attachment Fig.15 The winding machine is a panel-type winding machine, which is used for the winding production of small square battery cells and the winding and wrapping of positive electrode sheets. The winding machine shown in the figure automatically completes a series of actions required for battery cell winding, such as unwinding, tension control, deviation correction, winding, defective detection and rejection, and unloading, to achieve fully automatic winding of battery cells, which solves the problems of small size, high process precision, great manufacturing difficulty, high equipment cost and low yield rate of small square battery cells in the existing market. The winding machine reduces equipment costs, improves battery cell production stability and improves battery cell yield through innovative designs of "electrode sheet feeding and cutting mechanism", "glue sticking mechanism" and "unloading mechanism".

[0051] Attached Figure 7 To Attachment Fig.15A double-station winding machine shown in the figure includes a panel 10, on which are provided a diaphragm unwinding mechanism 20, a pole piece unwinding mechanism 30, a pole piece feeding and cutting mechanism 40, a square battery cell positive pole piece outer wrapping winding mechanism 800 in Example 1, a gluing mechanism 60 and a feeding mechanism 70; wherein, the diaphragm unwinding mechanism 20 includes two diaphragm unwinding assemblies 2, which are used to correct the deviation of the two diaphragms 01 of the battery cell and deliver them to the upper winding station 001 of the winding mechanism; in this embodiment, the two diaphragm unwinding assemblies 2 are arranged at a 90° position, that is, the diaphragm unwinding assembly 2 on the left is arranged horizontally on the panel 10, while the diaphragm unwinding assembly 2 on the right is arranged vertically, and the diaphragm unwinding directions are horizontal and vertical respectively. In the direction, the two diaphragm unwinding assemblies 2 match the two diaphragms 01 of the battery cell to correct the deviation and send them to the upper winding station 001 of the above-mentioned positive electrode sheet outer wrapping winding mechanism 800; the electrode sheet unwinding mechanism 30 includes two electrode sheet correction unwinding assemblies 3, and the two electrode sheet correction unwinding assemblies 3 are symmetrically arranged on both sides of one of the two diaphragm unwinding assemblies 2, and are used to unwind, measure the length, brush powder to remove iron and correct the deviation of the positive electrode sheet 03 and the negative electrode sheet 02 of the battery cell in turn and feed them to the electrode sheet feeding and cutting mechanism 40; in the present embodiment, the two electrode sheet correction unwinding assemblies 3 are symmetrically arranged with the diaphragm unwinding assembly 2 located on the right, that is, the vertically arranged diaphragm unwinding assembly 2 as the symmetry center, and the two electrode sheet unwinding assemblies 3 are used to unwind, measure the length, and correct the deviation of the positive and negative electrode sheets of the battery cell in turn. Measure, brush powder, remove iron and correct the deviation and feed it to the pole piece feeding and cutting mechanism 400. In this embodiment, each pole piece correction unwinding component 3 includes a correction unwinding component 301, a position correction component 302, a color mark detection component 303, a tension component 304, at least one powder brushing device 305, at least one iron removal device 306, a length measuring component 307 and a process correction component 308 which are arranged in sequence along the pole piece feeding direction, and the pole piece material roll is unwound by the correction unwinding component 301 and stretched along the position correction component 302, the color mark detection component 303, the tension component 304, the powder brushing device 305, the iron removal device 306, the length measuring component 307 and the process correction component 308. The position correction component 302 is used to correct the deviation from The unwinding component 301 corrects the position of the unwound pole piece, so that the position of the pole piece can be adjusted during the stretching process. The color mark detection component 303 is used for color mark recognition to determine the unwinding process or the unwinding position or the pole piece recognition. The tension component 304 is used to adjust the tension of the pole piece unwinding. The powder brushing device 305 is used for static electricity elimination and dust removal. The iron removal device 306 is used to absorb iron filings. The length measuring component 307 is used to measure the length of the unwound pole piece, so that the subsequent pole piece feeding and cutting mechanism 40 can cut the pole piece after feeding the set length. The process correction component 308 is used to adjust the position during the transmission process before the pole piece is transported to the pole piece feeding and cutting mechanism 40, so that the pole piece can be smoothly fed into the pole piece feeding and cutting mechanism 40.The electrode sheet feeding and cutting mechanism 40 includes two sheet feeding and cutting components 4, which are respectively connected to the matching electrode sheet correction and unwinding components 3. In practice, they are arranged at the front end of the feeding direction of the matching process correction component 308, so as to be connected to the electrode unwinding mechanism 30, and are used to feed the positive electrode sheet 03 / negative electrode sheet 02 unwinding by the matching electrode sheet correction and unwinding component 3 to the upper winding station 001 of the winding mechanism 800, and to cut the positive electrode sheet 03 / negative electrode sheet 02 after the winding mechanism 800 winds the positive electrode sheet 03 / negative electrode sheet 02 to the set length. It should be noted that the electrode sheet feeding and cutting assembly 4 on the right is used to feed the positive electrode sheet 03 and adapt to cutting, and the winding mechanism 800 is used to carry out the outer winding of the positive electrode sheet. Therefore, in the winding process, the length of the positive electrode sheet fed and cut by the electrode sheet feeding and cutting assembly 4 on the right to the winding mechanism 800 is longer than the length of the negative electrode sheet fed and cut by the electrode sheet feeding and cutting assembly 4 on the left. The gluing mechanism 50 is located beside the lower winding station 002 and is used to end the tail of the battery cell that has completed the positive electrode sheet wrapping and winding, that is, to stick the tape on the tail of the wound battery cell to make the tail in a shaped and bonded state. The unloading mechanism 60 is docked with the winding mechanism 800 and the gluing mechanism 50 at the lower winding station 002, and unloads the battery cells after performing winding defect detection, battery cell pressing and short-circuit test; in the present embodiment, the unloading mechanism 60 includes a battery cell taking assembly 601, a winding defect rejection assembly 602, an upper lifting battery cell assembly 603, a battery cell receiving assembly 604, a battery cell moving assembly 605, a core pressing short-circuit test assembly 606, a rejection assembly 607 and a good product conveying assembly 608, which are arranged on the panel 10 and are sequentially docked along the unloading direction; it should be noted that, in practice, the winding defect is determined by judging whether the wound battery cell is defective or not by inspecting its appearance, and the winding defect detection is performed during unloading. It has been completed before; the short-circuit test is completed by a short-circuit tester after the two pole pieces of the wound battery cell are short-circuited (not shown in the drawings). In this embodiment, the unloading mechanism 60 unloads the battery cell with glue affixed from the lower winding station 002 of the winding mechanism 800, and the battery cell is moved to the core pressing short-circuit test assembly 606 through the battery cell removal assembly 601, the upper lifting and connecting battery cell assembly 603, the battery cell connecting assembly 604 and the battery cell moving assembly 605, and the battery cell pressing and battery cell short-circuit tests are carried out simultaneously; after completion, the battery cell is moved to the good product conveying assembly 608 by the battery cell moving assembly 605, and the battery cell with poor short circuit is discharged by the rejection assembly 607, and the good product is conveyed to the battery cell box by the good product conveying assembly 608.

[0052] The working process of the winding machine of this embodiment is as follows: according to the winding process requirements, the battery cell winding process includes the negative electrode sheet 02 / positive electrode sheet 03 entering the upper winding station after electrode sheet unwinding and correction, defective yellow label detection, tension control, electrode sheet iron removal, powder brushing and dust collection, electrode sheet length measurement, electrode sheet process correction, electrode sheet feeding, and electrode sheet cutting; the two-layer diaphragm 01 enters the winding station after diaphragm unwinding, tension control, static electricity elimination, and diaphragm unwinding and correction; a total of four layers of materials are wound according to the process requirements of the battery cell; the termination tape is unwound and prepared by the gluing mechanism 50, and waits after the upper winding station 001 completes the above-mentioned winding except for the positive electrode sheet edge wrapping, and the winding assembly 100 rotates the conversion station to the lower winding station 002 and after completing the edging of the positive electrode sheet, the glue sticking mechanism 50 sticks the prepared termination tape to the battery cell at the unloading station; the unloading mechanism 60 unloads the glued battery cell from the lower winding station 002 of the winding mechanism 800; the battery cell is moved to the core pressing short circuit test component 606 through the battery cell removal component 601, the upper lifting and connecting battery cell component 603, the battery cell connecting component 604 and the battery cell moving component 605, and the battery cell pressing and battery cell short circuit tests are carried out simultaneously; after completion, the battery cell moving component 605 moves the battery cell to the good product conveying component 608, the battery cell with poor short circuit is discharged by the rejection component 607, and the good product is conveyed to the battery cell box by the good product conveying component 608, and finally the manufacture of the battery cell is completed.

[0053] In some of these embodiments, reference is made to the attached Fig. 9Each diaphragm unwinding assembly 2 includes a base 201 fixed on the panel 10, a guide rail 202 extending along the vertical panel 10 is provided on the base 201, a slide 203 is movably installed on the guide rail 202, the slide 203 is fixedly connected to the linkage plate 204, the linkage plate 204 is connected to the base 201 through a ball screw 205 and a linear guide sleeve assembly 206, the ball screw 205 is also connected to the correction motor 208 provided on the linkage plate 204 through a coupling 207, the correction motor 208 can drive the linkage plate 204 to drive the slide 203 to slide along the guide rail 202, and a diaphragm unwinding expansion shaft 209 that movably penetrates the panel 10 is embedded on the slide 203, and the diaphragm unwinding expansion shaft 209 is connected to the expansion shaft connector 2010 through the expansion shaft connector 2010. The expansion shaft cylinder 2011 (in this embodiment, the expansion shaft cylinder 2011 is a thin cylinder) on the linkage plate 204 is connected in transmission, and the diaphragm unwinding expansion shaft 209 is also connected in transmission with the unwinding drive motor 2013 arranged on the linkage plate 204 through the synchronous wheel transmission pair 2012; the linkage plate 204 is also connected to the roller support plate 2016 through a slide bar 2015 that moves through the panel 10, and the roller support plate 2016 is equipped with a plurality of diaphragm rollers 2017 arranged in sequence along the diaphragm 01 rolling direction and a diaphragm electrostatic rod 2019 installed through a bracket 218 through a bearing (not numbered in the figure), and the roller support plate 2016 is also provided with a driving cylinder 2021 that is connected in transmission through a pivot swing arm 2020 and is used to tension the diaphragm The diaphragm tension roller 2022 of the film; during the deflection correction and unwinding, the unwinding drive motor 2013 drives the diaphragm unwinding expansion shaft 209 to rotate, so that the diaphragm coil tightened on the diaphragm unwinding expansion shaft 209 is pulled and unwound along the diaphragm roller 2017, the diaphragm electrostatic rod 2019 and the diaphragm tension roller 2022, and the deflection correction motor 208 drives the linkage plate 204 and the slide seat 203 to move relative to the base 201 to correct the deflection, so that the diaphragm unwinding expansion shaft 209 and the roller support plate 2016 move in a corrective manner, and the deflection correction and unwinding of the diaphragm are matched and sent to the winding mechanism 80. It should be noted that the diaphragm unwinding expansion shaft 209 includes a coaxially arranged expansion core shaft and a shaft sleeve, and the shaft sleeve is connected to the unwinding drive motor 2013 through a synchronous belt drive pair 2012, thereby driving the diaphragm The unwinding expansion shaft 209 rotates as a whole, thereby unwinding, and the expanding core shaft is connected to the expansion shaft cylinder 2011 through the expansion shaft connector 2010 provided at one axial end thereof, and can be driven by the expansion shaft cylinder 2011 to move axially, matching the expansion shaft device provided at the other axial end of the diaphragm unwinding expansion shaft 209 to expand or contract, thereby winding and tightening the diaphragm; and the deflection correction unwinding of the diaphragm is achieved by the deflection correction motor 208 driving the linkage plate 204 and the slide seat 203 to move relative to the base 201, thereby making the diaphragm roller 2017, the diaphragm electrostatic rod 2019 and the diaphragm tension roller 2022 match and move to complete the deflection correction; the structure of the diaphragm deflection correction unwinding component 2 can refer to the following structural description of the deflection correction unwinding component 301 and the corresponding drawings.

[0054] In some of these embodiments, reference is made to the attached Figure 7 , Attachment Figure 8 and attached Fig.10 To Attachment Fig.12The deflection correcting unwinding component 301 includes a first base 3011 fixed on the panel 10, a first guide rail 3012 extending in a direction perpendicular to the panel 10 is provided on the first base 3011, a first slide 3013 is movably installed on the first guide rail 3012, the first slide 3013 is fixedly connected to a follower plate 3014, the follower plate 3014 is connected to the first base 3011 through a first ball screw 3015 and a first linear guide sleeve assembly 3016, the first ball screw 3015 is also connected to a first deflection correcting motor 3017 provided on the follower plate 3014 through a first coupling (not shown in the drawings), the first deflection correcting motor 3017 can drive the follower plate 3014 to drive the first slide 3013 to slide along the first guide rail 3012, and a pole piece unwinding shaft 301 that movably penetrates the panel 10 is nested on the first slide 3013 8. One end of the pole piece unwinding shaft 3018 is connected to the first unwinding motor 30110 arranged on the follower plate 3014 through a synchronous belt transmission pair 3019, and the other end is connected to the expansion shaft body 30111 carrying the pole piece coil. The first unwinding motor 30112 can drive the pole piece unwinding shaft 3018 to drive the expansion shaft body 30111 to rotate for matching unwinding; a tensioning cylinder 30112 is arranged at one axial end of the pole piece unwinding shaft 3018, and the tensioning cylinder 30112 can drive the tensioning mandrel 30113 that passes through the pole piece unwinding shaft 3018 and is movably connected to the expansion shaft body 30111 to insert / withdraw the expansion shaft body 30111, so that the expansion shaft body 30111 tightens the pole piece coil, and the follower plate 3013 is also connected to the roller bracket 30116 provided with a pole piece roller 30115 through the first sliding rod 30114 that movably passes through the panel 10. In this embodiment, the position correction component 302 includes a correction frame 3021 installed on the vertical panel 10, and two correction adjustment guide rods 3022 are fixedly provided on the end of the correction frame 3021 away from the panel 10. The correction adjustment guide rods 3022 are provided with a correction adjustment slider 3023. The correction adjustment slider 3023 is fixedly connected to a mounting piece 3024 on which a correction sensor 3027 is installed. In practice, the mounting piece 3024 is a mounting piece 3024 with a slot, and the pole piece in unwinding passes through the slot. By adjusting the position of the mounting piece 3024, the pole piece can be adaptively adjusted in the unwinding and stretching process. The correction adjustment slider 3023 can also be arranged on the positioning block 3025 before correction. The differential head 3026 drives the correction adjustment slider 3023 to slide along the correction adjustment guide rod 3022, and matches the position correction of the pole piece. It should be noted that the position correction component 302 is only manually set at the correction position, that is, it is set by the differential head 3027; in this embodiment, the color mark detection component 303 includes a detection bracket 3031 installed vertically on the panel 10, and two optical axes 3032 are fixed on the end of the detection bracket 3031 away from the panel 10. A detection mounting seat 3034 driven to slide by an adjustment screw 3033 arranged between the two optical axes 3032 is movably installed on the optical axis 3032, and a color mark sensor 3035 is fixed on the detection mounting seat 3034;In the present embodiment, the tension assembly 304 includes a tension roller 3042 fixed on a roller frame 3041, and the roller frame 3042 is connected to the first driving cylinder 3044 fixed on the panel 10 by being nested in the tension swing arm shaft 3043 on the panel 10. The first driving cylinder 3044 can drive the tension roller 3043 to swing through the tension swing arm shaft 3043 to drive the roller frame 3041 to adjust the tension of the pulled pole piece; in the present embodiment, each powder brushing device 305 includes a pole piece powder brushing roller 3052 installed in a powder suction box 3051 and driven to rotate by a driving motor (not shown in the drawings), and the powder suction box 3051 is fixed to the panel 10 through the powder suction box bracket 3053, and each powder suction box 305 is matched on the panel 10. 1 is provided with a pressure roller 3054, and the pressure roller 3054 presses the pole piece against the matching pole piece powder brushing roller 3052 to perform powder brushing and dust removal; in the present embodiment, each iron removal device 306 includes a magnet installed in an iron removal seat 3061 (not shown in the accompanying drawings), and the iron removal seat 3061 is fixedly connected to the panel 10 through a T-shaped mounting seat 3062; in the present embodiment, the length measuring component 307 includes a length measuring angle seat 3071 fixedly connected to the panel 10, and the length measuring angle seat 3071 is connected to a pressure roller seat 3074 on which a length measuring pressure roller 3073 is installed through a linear guide rod 3072, and the pressure roller seat 3074 is also connected to a second driving cylinder 3075 fixedly installed on the length measuring angle seat 3071 through a bearing (as shown in the accompanying drawings) The measuring roller 3073 is also connected to an encoder 3078 at one end of its axial direction and used to measure the unwinding length of the pole piece through a coupling 3077; the measuring roller 3073 presses the pole piece against the measuring roller 3073 to drive the measuring roller 3073 to rotate, and measures the number of revolutions of the measuring roller 3073 through the encoder 3078 to measure the unwinding length of the pole piece; in this embodiment, the process correction component 308 includes a correction base 3081 fixed on the panel 10, and the correction base 3081 is connected to a correction roller mounting seat 3084 on which the process correction roller 3083 is installed through a correction swing angle bearing 3082, and a rotating shaft 3083 is also provided on the correction base 3081. 085, a support 3086 is fixed on the rotating shaft 3085, and an electric ball screw transmission pair 3089 is provided on the support 3086, which is connected to the correction roller mounting seat 3084 through a screw connector 3087 and a support shaft 3088. The correction roller mounting seat 3084 is also movably connected to the correction base 3081 through a support plate 30810, a cam bearing 30811 and a slide seat 30812; the electric ball screw transmission pair 3089 drives the correction roller mounting seat 3084 to swing with the correction swing angle bearing 30811 as the rotation axis, and cooperates with the guide of the support plate 30810, the cam bearing 30811 and the slide seat 30812 to match the correction roller mounting seat 3084 to drive the two process correction rollers 3083 to swing and perform process correction on the pole piece. ;

[0055] In some of these embodiments, reference is made to the attached Figure 7 To Attachment Figure 8 and attached Fig.13, the two sheet feeding and cutting components 4 both include a sheet feeding base 401 mounted on the panel 10, a ball screw slide 402 is arranged on the sheet feeding base 401, the ball screw slide 402 is connected to a slide plate 403 by transmission, a first ball screw slide 404 is fixed on the slide plate 403, the slide plate 403 is also connected to the pole sheet cutting component 406 through a cutter connecting block 405, and the first ball screw slide 404 is connected to a sheet feeding clamp component 408 movably connected to the pole sheet cutting component 406 through a sheet feeding connecting block 407; the ball screw slide 402 drives the slide plate 403 to drive the pole sheet cutting Component 406 and the first ball screw slide 404 move, so that the electrode cutting component 406, the film feeding clamp component 408 and the positive electrode sheet / negative electrode sheet clamped by the film feeding clamp component 408 move toward the upper winding station 001 of the winding mechanism 800, and cooperate with the first ball screw slide 405 to drive the film feeding clamp component 408 to move, so that the film feeding clamp component 408 clamps the positive electrode sheet / negative electrode sheet and moves toward the matching electrode cutting component 406 to complete the film feeding, and / or the electrode cutting component 406 cuts the positive electrode sheet / negative electrode sheet after the winding mechanism 800 winds the positive electrode sheet / negative electrode sheet to a set length.In this embodiment, the film feeding clamp assembly 408 includes a film feeding support plate 4081 connected to the film feeding connection block 407, a fixed pressing block 4082 is fixedly arranged on one side of the width direction of the film feeding support plate 4081, the fixed pressing block 4082 is fixedly connected to the fixed film feeding clamp 4083, and a pressing roller 4085 is installed through a support seat 4084, and a support block 4086 is fixedly arranged on the other side of the width direction of the film feeding support plate 4081, and the support block 4086 is movably connected to a movable roller seat 4088 through a guide rod 4087. 088 is provided with a sheet feeding pressure roller 4089 which is opposite to the pressure roller 4085 and a dynamic sheet feeding clamp 40810 which is opposite to the fixed sheet feeding clamp 4083. The dynamic roller seat 4088 is also connected to the third driving cylinder 40811 which is provided on the sheet feeding support plate 4081. The third driving cylinder 40811 drives the dynamic roller seat 4088 to drive the sheet feeding pressure roller 4089 and the dynamic sheet feeding clamp 40810 to move toward the pressure roller 4085 and the fixed sheet feeding clamp 4083 to match the introduced positive electrode sheet. / negative electrode sheet is clamped; in this embodiment, the electrode sheet cutting assembly 406 includes a cutter seat 4061 fixedly connected to the cutter connecting block 46, a fixed cutter seat 4063 on which a fixed cutter 4062 is installed is fixedly arranged on the cutter seat 4061, and a fourth driving cylinder 4064 is arranged at the end of the cutter seat 4061 facing away from the fixed cutter seat 4063, and the fourth driving cylinder 4064 cooperates with two guide pillars 4066 that penetrate the cutter seat 4061 and extend to the side where the fixed cutter seat 4063 is arranged to connect the moving The knife seat 4067 and the movable knife seat 4067 are movably connected to the cutter pressure plate 4069 which is opposite to the fixed cutter 4062 through the first guide rod 4068 and the spring (not numbered in the figure); the fourth driving cylinder 4064 drives the movable knife seat 4067 to drive the cutter pressure plate 4069 to move relative to the fixed cutter 4062, and cuts the positive electrode sheet / negative electrode sheet wound to a set length, and the matching electrode sheet feeding and cutting mechanism 40 cuts the positive electrode sheet / negative electrode sheet after the winding mechanism 800 winds the positive electrode sheet / negative electrode sheet to a set length.

[0056] In some of these embodiments, reference is made to the attached Figure 7 , Attachment Figure 8 and attached Fig.14The glue-applying mechanism 50 includes a glue-applying bottom plate 501 fixedly connected to the panel 10, a glue-applying base 502 is arranged on the glue-applying bottom plate 501, a vertical plate 503 extending in a direction perpendicular to the panel 10 is fixedly arranged on one side of the length direction of the glue-applying base 502, and a tape reel 504, a pre-stretched tape assembly 505 and a pull-cut tape assembly 506 are arranged in sequence on one side wall of the vertical plate 503 along its extension direction, and the pull-cut tape assembly 506 is used to receive the termination tape pre-stretched and relaxed from the tape reel 504 by the pre-stretched tape assembly 505, and pull the tape of a set length and then cut it into tape sheets; it also includes an upper tape assembly 507 arranged on the glue-applying base 502 and connected to the pull-cut tape assembly 506, and the upper tape assembly 507 can deliver the tape sheet to the tail of the battery cell where the positive electrode sheet is wrapped at the lower winding station 001. Glue sticking; wherein, the pre-stretched tape assembly 505 includes a plurality of tape rollers 551 arranged on a vertical plate 503, and the plurality of tape rollers 551 are arranged at intervals along the extension direction of the plate 503. A pre-stretched roller 553 arranged on a pre-stretched slider 552 is also arranged between two of the plurality of tape rollers 551. The pre-stretched slider 552 is passed through a vertically arranged guide shaft 554 and is connected to a pre-stretched cylinder 555 in transmission. In one embodiment, the pre-stretched cylinder 555 is arranged on a mounting seat (not numbered in the accompanying drawings) for installing the guide column shaft 554, and the pre-stretched cylinder 555 is below the pre-stretched slider 552; the pre-stretched cylinder 555 drives the pre-stretched slider 552 to drive the pre-stretched roller 553 to slide vertically, and cooperates with the traction of the tape roller 551 to pre-stretch the tape roll to a set length. In practice, because the tape at the end of the tape roll has a certain degree of stickiness, directly pulling the tape out of the tape roll and cutting it will cause the tape to be stretched, and sticking it to the end of the battery cell will cause unstable fitting and insufficient tension; during pre-stretching, the tape is wrapped around the tape roller 551, and the pre-stretching cylinder 555 drives the pre-stretching slider 552 to drive the pre-stretching roller 553 to move vertically downward, and the pre-stretching roller 553 drives the tape downward, so that the tape roll is unwound and a section of tape is pulled out. The pulled tape is in a relaxed state, which makes it convenient for the pulling and cutting tape assembly 506 to clamp the tape, and avoids the pulling and cutting tape assembly 506 from cutting the tape into tape sheets. In the process, the tension of pulling and / or cutting is too large, causing the tape sheets to be stretched (expanded outward), and after being stuck to the end of the battery cell, the glue is not in place and the adhesive tension is insufficient.The tape pulling and cutting assembly 506 includes a tape pulling cylinder 561 disposed on the vertical plate 503, the tape pulling cylinder 561 is connected to a first slide plate 563 hung on two fourth linear guide rails 562 through a cylinder connecting block 561, and a top rubber bottom plate (not shown in the drawings) is also hung on the two fourth linear guide rails 563, and a tape rear pressure assembly 565, a tape cutting assembly 566 and a tape middle pressure assembly 567 are sequentially arranged along the extension direction of the vertical plate 503 on the first slide plate 563, and a tape front pressure assembly 568 is fixed on the top rubber bottom plate; the tape pulling cylinder 56 The first slide plate 563 can be driven to drive the tape rear pressure assembly 565, the tape cutting assembly 566 and the tape intermediate pressure assembly 567 to move toward / away from the tape front pressure assembly 568, and cooperate with the tape rear pressure assembly 565, the tape intermediate pressure assembly 567 and the tape front pressure assembly 568 to clamp the tape and the tape cutting assembly 566 to cut the tape, so as to match the pre-stretched and relaxed tape to be forwarded and cut into tape pieces of set length; the tape front pressure assembly 568 includes a top glue cylinder 5681 fixedly arranged on the top glue bottom plate 564, and the top glue cylinder 5681 is driven by a transmission link The top glue block 5682 is connected, and the top glue cylinder 5681 drives the top glue block 5682 to move toward the upper tape assembly 507 and press the vacuum adsorption glue roller 5782 of the upper tape assembly 507 to press the tape; the tape rear pressure assembly 565 includes a rear glue pressing cylinder 5651 fixedly arranged on the first slide 563, and the rear glue pressing cylinder 5651 can drive the rear glue pressing block 5652 to move vertically and cooperate with the glue pressing stopper 569 arranged just above the rear glue pressing block 5652 and fixedly connected to the first slide 563 to clamp the tape; the tape middle pressure assembly 567 includes a fixed The middle glue pressure cylinder 5671 arranged on the first slide plate 563 can drive the middle glue pressure block 5672 to move vertically until it presses against the top glue block 5682 located just above the middle glue pressure block 5672 to clamp the tape; the tape cutting assembly 566 includes a glue cutting cylinder 5661 vertically arranged on the first slide plate 563, and the glue cutting cylinder 5661 can drive the glue cutting knife 5662 to move vertically and cut the tape clamped by the tape rear pressure assembly 565, the tape middle pressure assembly 567 and the tape front pressure assembly 568 into tape sheets.The upper adhesive tape assembly 507 includes a tenth driving cylinder 571 installed at the other end of the adhesive base 502 in the length direction. The tenth driving cylinder 571 is connected to the first mounting seat 573 for mounting the rotating arm cylinder 572. The rotating arm cylinder 572 is pivotally connected to the adhesive rotating block 577 provided on the U-shaped bracket 576 through the joint bearing 574 and the adhesive rotating arm 575. The rotating arm cylinder 572 can drive the adhesive rotating block 577 to swing relative to the U-shaped bracket 576 and drive the adhesive suction and pasting assembly 578 provided thereon to absorb the adhesive tape sheet cut by the pulling and cutting adhesive tape assembly 506 and send it to the tail of the battery cell where the positive electrode sheet is wrapped. The adhesive suction and pasting assembly 578 includes an adhesive roller mounting seat 57 fixedly provided on the adhesive rotating block 577. 81. A vacuum adhesive adhesive roller 5782 is mounted on the adhesive roller mounting seat 5781 via a bearing (not numbered in the accompanying drawings). The vacuum adhesive adhesive roller 5782 is also connected to a drive motor 5784 fixed on the U-shaped bracket 576 via a first synchronous belt transmission pair 5783 and driven to rotate by the drive motor 5784 to apply adhesive tape. In practice, the drive motor 5784 drives the vacuum adhesive adhesive roller 5782 to rotate, so that the vacuum adhesive adhesive roller 5782 rolls on the end of the battery cell winding to apply the tape. The swing of the adhesive suction and application assembly 578 is to complete the removal of the tape sheet from the cutting tape assembly 507 to a position matching the tail end of the battery cell, and the vacuum adhesive adhesive roller 5782 uses a vacuum adsorption method to absorb the tape and then transfer it.

[0057] The glue sticking mechanism 50 in this embodiment is to pull out the tape installed on the tape reel 504 according to a certain length, cut it, and then transfer it to the vacuum adsorption glue sticking roller, and then rotate it to a certain angle to drive the vacuum adsorption glue sticking roller to rotate and stick the tape to the battery cell again; its working process is as follows: the tape is pulled out from the tape reel, passes through the pre-stretching tape assembly, and then passes through the tape roller to reach the tape back-pressing assembly. The front end of the tape is exposed to the front end of the tape back-pressing assembly, which is the initial position of the tape threading; the tape feeding is started, the tape back-pressing assembly sends the tape forward, and the tape with the exposed front end reaches the top glue block of the tape front-pressing assembly After the tape is placed on the top, the top glue block presses the exposed part of the front end of the tape; the tape rear pressure assembly releases the rear pressure block, and at the same time, the tape rear pressure assembly retreats, the rear pressure block of the tape rear pressure assembly presses the tape, and the middle pressure block of the tape middle pressure assembly also presses the tape, and the vacuum adsorption glue roller starts to vacuum adsorb the back of the tape; the tape cutting assembly returns after cutting the tape, and the tape front pressure assembly and the tape middle pressure assembly return and blow air to separate and release the tape; the vacuum adsorption glue roller attaches the cut tape and rotates to the gluing angle, and the vacuum adsorption glue roller tapes the battery cell. After the battery cell gluing is completed, the vacuum adsorption glue roller returns to wait.

[0058] In some of these embodiments, reference is made to the attached Figure 7 , Attachment Figure 8 and attached Fig.15, the cell taking assembly 601 includes a fifth linear guide rail 611 extending along the material cutting direction, the fifth linear guide rail 611 is connected to a horizontal material receiving frame 613 through a core connecting block 612, and the core connecting block 612 is also connected to a material taking cylinder 614 in transmission connection; the material taking cylinder 614 drives the core connecting block 612 to drive the horizontal material receiving frame 613 to move, so as to match the cell taken from the lower winding station 001 and transfer it toward the upper core connecting assembly 603; the bad winding rejection assembly 602 is arranged between the cell taking assembly 601 and the upper core connecting assembly 603, and includes a material blocking bracket 621 arranged on the vertical panel 10, and a material blocking cylinder 623 connected to a material blocking plate 622 is arranged on the material blocking bracket 621, and the material blocking cylinder 623 drives the material blocking plate 62 2 moves, so that the baffle plate 622 removes the poorly wound battery cells transferred by the battery cell removal assembly 601 from the horizontal receiving rack 613; the upper lifting battery cell assembly 603 includes a first mounting plate 631 arranged vertically on the panel 10, a sixth linear guide rail 632 extending vertically from the panel 10 is arranged on the first mounting plate 631, a core connecting slide plate 633 is arranged on the sixth linear guide rail 632, the core connecting slide plate 633 can be driven by a transverse cylinder 634 arranged on the first mounting plate 631 to slide along the sixth linear guide rail 632, a seventh linear guide rail 635 is vertically arranged on the core connecting slide plate 633, a core suction slide seat 636 is arranged on the seventh linear guide rail 635, a core suction slide seat 636 is fixedly connected to a core suction mounting block 637, and a core suction mounting block 637 is provided to There is one less row of vacuum suction nozzles 638, and the core suction slide 636 is also connected to the lifting cylinder 639 fixed on the core connecting slide 633; ​​the transverse cylinder 634 drives the core connecting slide 633 to move in coordination with the lifting cylinder 639 to drive the core suction slide 636 to drive the core suction mounting block 637 and the vacuum suction nozzle 638 to move vertically, so as to suck and lift the battery cells transferred by the battery cell assembly 601 and move them horizontally to the top of the battery cell connecting assembly 604; the battery cell connecting assembly 604 includes a second mounting plate 641 arranged vertically on the panel 10, and a connecting cylinder 643 connected to a connecting support block 642 is vertically installed on the second mounting plate 641, and the connecting cylinder 643 drives the connecting support block 642 to move vertically and to contact with the connecting support block 642. The upper lifting cell assembly 603 and the front support plate 661 of the core short circuit test assembly 606 are movably connected, and are matched to receive the cells lifted and laterally fed by the upper lifting cell assembly 606 and then transferred to a position flush with the front support plate 661; the cell moving assembly 605 includes an eighth linear guide rail 651 extending along the material unloading direction, and a slider seat 652 is provided on the eighth linear guide rail 651, and the slider seat 652 is transmission-connected with a moving cylinder 653 provided on the panel 10, and a vertically arranged lifting cylinder 654 is fixed on the slider seat 652, and the lifting cylinder 654 is transmission-connected to a core pulling claw frame 655 located directly above the receiving support block 642 and the front support plate 6613 at the setting position;The material transfer cylinder 563 drives the slider seat 652 to slide along the eighth linear guide rail 651, and cooperates with the lifting cylinder 654 to drive the core pulling claw frame 655 to move vertically, so as to match the battery cell from the receiving support block 642, the front support plate 6613 and the heating block 664 of the core pressing short circuit test assembly 606 to the front support plate 6613, the heating block 664 and the good product conveying assembly 608. In practice, the battery cell transfer assembly 605 transfers the battery cell between two adjacent workstations; the core pressing short circuit test assembly 606 also includes a first fixed plate 662 and a second fixed plate 663 connected by a connecting rod 661. The first The heating block 664 is fixed on the fixed plate 662, and a pole ear contact block 666 driven by the first cylinder 665 to move vertically is also provided on the side of the heating block 664. The second fixed plate 663 is connected to a downward pressing heat insulation seat 669 on which a downward pressing heating block 668 is installed through a downward pressing guide rod 667. The downward pressing heat insulation seat 669 is also connected to a downward pressing cylinder 6610 provided on the second fixed plate 666. The downward pressing heat insulation seat 669 is also movably connected to the pole ear downward pressing block 6612 through a third guide rod 6611 and a spring (not numbered in the figure). The downward pressing heating block 668 is matched with the heating block 664 in position, and the pole The ear pressing block 6612 is matched with the ear contact block 666 in position; the pressing cylinder 6610 drives the pressing insulation block 669 to drive the pressing heating block 668 and the ear pressing block 6612 to move vertically, so as to press the wound battery cells and perform short circuit test on the battery cells and the ear; the rejecting assembly 67 includes a rejecting hanging plate 672 fixedly connected to the second fixed plate 663 through a connecting piece 671, and the rejecting hanging plate 672 is equipped with a suction nozzle sliding block 674 that can slide along the vertical feeding direction through a round rod 673, and the suction nozzle sliding block 674 is connected to the second cylinder 675 provided on the rejecting hanging plate 672 in driving connection. The nozzle slide block 674 is also connected to the nozzle mounting plate 678 for mounting the pneumatic nozzle 677 through the telescopic guide rod 676, and the nozzle mounting plate 678 is also connected to the material taking cylinder 679 provided on the nozzle slide block 674; the material taking cylinder 679 drives the nozzle mounting plate 678 to drive a plurality of vacuum nozzles 677 to move vertically, and cooperates with the second cylinder 675 to drive the nozzle slide block 674 to move, so as to match and suck the defective products that have completed the core pressing and short circuit test into the rejection box; and the good product conveying assembly 608 is a conveyor belt docked with the core pressing short circuit test assembly 66, and is used to convey the good lithium battery for unloading. ;

[0059] The above does not limit the technical scope of the present invention in any way. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A square battery cell positive electrode sheet outer wrapping winding mechanism, characterized in that: It includes a winding assembly arranged on the panel and a pole piece pressing assembly, a diaphragm pressing assembly, a diaphragm welding and cutting assembly, a positive pole piece lifting assembly and a finishing assembly arranged on the panel and located on the circumferential outer side of the winding assembly, wherein: The winding assembly includes two plug-in needle winding units that can rotate alternately between an upper winding station and a lower winding station. The plug-in needle winding unit located at the upper winding station can receive the separator, the negative electrode sheet and the positive electrode sheet at the upper winding station and rotate to the lower winding station to perform positive electrode sheet edge wrapping and finishing after completing pre-winding and insert sheet winding. The electrode sheet pressing assembly comprises two electrode sheet pressing devices symmetrically arranged on both sides of the winding upper auxiliary device, which are used to cooperate with the winding upper auxiliary device to press the unwound negative electrode sheet and positive electrode sheet against the diaphragm and / or pull in the sheet; the diaphragm pressing assembly comprises two symmetrically arranged diaphragm pressing devices, and presses the diaphragm with the negative electrode sheet and the positive electrode sheet during the pre-winding, sheet insertion winding and rotation from the upper winding station to the lower winding station of the plug-in needle winding unit, and / or presses the two diaphragms to clamp the negative electrode sheet during the welding and cutting of the diaphragm by the diaphragm welding and cutting assembly; the positive electrode sheet lifting assembly is used to lift the positive electrode sheet and enable the diaphragm welding and cutting assembly to weld and cut the two diaphragms; the finishing assembly is used to hold the diaphragm during the diaphragm welding and cutting process, and / or hold the positive electrode sheet during the positive electrode sheet hemming process and cooperate with the plug-in needle winding unit to complete the winding and finishing of the positive electrode sheet hemming of the battery cell; The two plug-in needle winding units are installed on the revolution component, and the revolution component includes a base seat fixed to the panel, and a main shaft turntable is coaxially mounted on the base seat. The main shaft turntable rotates through the meshing transmission of a transmission gear arranged at one axial end thereof and a driving gear arranged on a driving shaft of a reducer driven by the revolution motor, and drives the two plug-in needle winding units nested on the main shaft turntable to rotate alternately between the upper winding station and the lower winding station; each of the plug-in needle winding units includes a winding needle center shaft, and a winding needle center shaft. The shaft is connected to a winding needle through a winding needle connector, and a winding needle core shaft movably inserted into the winding needle middle shaft and connected to a plug-in sheet movably inserted into the winding needle connector; the winding needle middle shaft is movably assembled on the main shaft turntable through a winding outer shaft and a shaft sleeve, and a first transmission gear is arranged on the winding needle outer shaft, and the first transmission gear is meshed and connected with a driven gear arranged on two coaxial transmission shafts, and the two transmission shafts are both connected to the winding drive motor through a synchronous belt transmission pair, and the transmission shaft is driven to rotate by the corresponding winding drive motor and drives the two A plug-in type winding needle unit rotates relative to the main shaft turntable to complete the winding of the battery cell; an axial end of each winding needle center axis away from the winding needle connector is also provided with an axis tail wheel, and an axis tail dial wheel is provided at the end of the winding needle core shaft extending out of the winding needle center axis provided with the axis tail wheel; each of the plug-in type winding needle units is also connected to a pull-out device provided on the vertical panel, and the pull-out device includes a mounting plate provided on the vertical panel, and a linear guide is provided on the mounting plate, and a needle pull block and a paddle pull block are movably installed on the linear guide, and the needle pull block and the paddle pull block are provided. The pin-out pull block and the paddle pull block are respectively connected to the drive cylinder fixed on the mounting plate through the connecting block and can be driven by the matching drive cylinder to slide along the linear guide rail. The pin-out pull block and the paddle pull block are also arranged to be movably connected with the shaft tail wheel and the shaft tail paddle wheel respectively in the setting position, and drive the plug-in type needle winding unit to eject or withdraw the needle during the sliding of the pin-out pull block along the linear guide rail, and / or drive the plug-in pull block to insert / withdraw the wound battery cell parallel to the winding needle during the sliding of the paddle pull block along the linear guide rail; The positive electrode sheet lifting component includes a mounting frame arranged perpendicular to the panel, and a translation cylinder is arranged perpendicular to the end of the mounting frame away from the panel, and the translation cylinder is connected to a movable seat through a transmission. The movable seat is equipped with a suction sheet rotating shaft arranged parallel to the mounting frame through a bearing, and the suction sheet rotating shaft is connected to a pole piece suction sheet rod for installing a vacuum suction cup through a swing arm, and the suction sheet rotating shaft is also connected to a fifth driving cylinder arranged on the movable seat through a suction sheet driving block and a linkage block; the translation cylinder drives the movable seat to translate, so that the pole piece suction sheet rod and the vacuum suction cup are moved to one side of the end face of the positive electrode sheet, and cooperates with the fifth driving cylinder to drive the suction sheet rotating shaft to rotate, so that the pole piece suction sheet rod swings and the vacuum suction cup is vacuum-adsorbed, thereby matching to lift the positive electrode sheet.

2. A square battery cell positive electrode sheet outer wrapping winding mechanism according to claim 1, characterized in that: The two electrode sheet pressing devices include a negative electrode sheet pressing device and a positive electrode sheet pressing device, and the negative electrode sheet pressing device and the positive electrode sheet pressing device both include a slide group seat arranged vertically on a panel, and the slide group seat is connected to a movable frame through a first linear guide rail arranged vertically thereto, and one end of the movable frame matching its moving direction is equipped with an electrode sheet pressing roller through a pressure wheel seat, and the pressure wheel seat of the positive electrode sheet pressing device is also connected to a sheet entry guide block adapted to the winding upper auxiliary device, and the movable frame is also connected to a first driving cylinder arranged on the slide group seat; the first driving cylinder drives the movable frame to drive the electrode sheet pressing roller and / or the sheet entry guide block to move along the first linear guide rail to match the unwinding negative electrode The sheet and the positive sheet are pressed against the diaphragm and / or pulled in; the two diaphragm pressing devices each include a first slide seat arranged vertically on the panel, the first slide seat is connected to the first moving frame through a second linear guide rail arranged vertically thereto, and the first moving frame is equipped with a diaphragm pressing roller at one end matching its moving direction through a first pressing wheel seat. The first moving frame is also connected to a second driving cylinder arranged on the first slide seat in a transmission manner; the second driving cylinder drives the first moving frame to drive the diaphragm pressing roller to move along the second linear guide rail, matching the diaphragm to press the negative sheet and the positive sheet and / or pressing the two diaphragms to clamp the negative sheet; the diaphragm welding and cutting assembly includes symmetrically arranged hot and cold welding and cutting devices and welding and cutting auxiliary The auxiliary device, the hot and cold welding and cutting device and the welding and cutting auxiliary device both include a second slide seat arranged vertically on the panel, the second slide seat is connected to the welding and cutting frame through a third linear guide rail arranged vertically thereto, the welding and cutting frame of the hot and cold welding and cutting device is connected to the hot cutting welding knife through a thermal insulation pad, the lower part of the hot cutting welding knife is also provided with a diaphragm cold cutting knife fixedly connected to the welding and cutting frame, the welding and cutting frame of the welding and cutting auxiliary device is fixedly connected to the welding and cutting pad block that matches and faces the hot cutting welding knife and the diaphragm cold cutting knife at the setting position, and the welding and cutting frame is also connected to the third driving cylinder arranged on the second slide seat; the third driving cylinder drives the welding and cutting frame to slide along the third linear guide rail, so that the hot cutting welding knife and the diaphragm cold cutting knife are aligned with the welding and cutting pad block. The welding and cutting pads move towards each other to match the welding and cutting of the diaphragm; the finishing component includes a third slide seat arranged vertically on the panel, and the third slide seat is connected to the third moving frame through a fourth linear guide rail arranged vertically thereto; the third moving frame is matched with one end of its moving direction and is equipped with a pressure roller through a third pressure wheel seat, and the third moving frame is also connected to a fourth driving cylinder arranged on the third slide seat; the fourth driving cylinder drives the third moving frame to drive the pressure roller to move along the fourth linear guide rail, matching the pressure holding of the diaphragm during the diaphragm welding and cutting process, and / or pressing the positive electrode sheet during the positive electrode sheet wrapping process and cooperating with the plug-in winding needle unit to complete the wrapping and winding of the positive electrode sheet of the battery cell.

3. A double-station winding machine, characterized in that: A square battery cell positive electrode sheet outer wrapping winding mechanism comprising any one of claims 1 to 2, and further comprising: a diaphragm unwinding mechanism, comprising two diaphragm unwinding assemblies, for correcting and delivering the two diaphragms of the battery cell to the upper winding station of the winding mechanism; a pole piece unwinding mechanism, comprising two pole piece correction unwinding assemblies, the two pole piece correction unwinding assemblies are symmetrically arranged on both sides of one of the two diaphragm unwinding assemblies, and are used to sequentially unwind, measure the length, brush powder to remove iron, correct the deviation of the positive and negative pole sheets of the battery cell, and feed them to the pole piece feeding and cutting mechanism; the pole piece feeding and cutting mechanism, comprising two feeding and cutting assemblies, the two pole piece correction unwinding assemblies are symmetrically arranged on both sides of one of the two diaphragm unwinding assemblies, and are used to sequentially unwind, measure the length, brush powder to remove iron, correct the deviation of the positive and negative pole sheets of the battery cell, and feed them to the pole piece feeding and cutting mechanism. The sheet feeding and cutting components are respectively docked with the matching electrode sheet deviation correction and unwinding components, and are used to feed the positive electrode sheet / negative electrode sheet unwound by the matching electrode sheet deviation correction and unwinding components to the upper winding station of the winding mechanism, and cut the positive electrode sheet / negative electrode sheet after the winding mechanism winds the positive electrode sheet / negative electrode sheet to a set length; the gluing mechanism is arranged beside the lower winding station, and is used to affix the termination tape to the tail of the battery cell that has completed the positive electrode sheet edge wrapping; the unloading mechanism is docked with the winding mechanism and the gluing mechanism at the lower winding station, and unloads the material after the battery cell is subjected to winding defect detection, battery cell pressing and short circuit test.

4. A double-station winding machine according to claim 3, characterized in that: Each diaphragm unwinding assembly includes a base fixedly arranged on the panel, a guide rail extending along the vertical panel is arranged on the base, a slide is arranged on the guide rail, the slide is fixedly connected to a linkage plate, the linkage plate is connected to the base through a ball screw and a linear guide sleeve assembly, the ball screw is also connected to a deviation correction motor arranged on the linkage plate through a coupling, the deviation correction motor can drive the linkage plate to drive the slide to slide along the guide rail, a diaphragm unwinding expansion shaft that moves through the panel is nested on the slide, and the diaphragm unwinding expansion shaft is embedded in the slide. The shaft is connected to the expansion shaft cylinder on the linkage plate through an expansion shaft connector, and the diaphragm unwinding expansion shaft is also connected to the unwinding drive motor on the linkage plate through a synchronous wheel transmission pair; the linkage plate is also connected to the roller support plate through a sliding rod that moves through the panel, and the roller support plate is equipped with a plurality of diaphragm rollers arranged in sequence along the diaphragm feeding direction and a diaphragm electrostatic rod installed through a bracket through bearings, and the roller support plate is also provided with a diaphragm tension roller that is connected to the sixth drive cylinder through a pivoting swing arm and is used to tension the diaphragm.

5. A double-station winding machine according to claim 3, characterized in that: The two pole piece deviation correction and unwinding assemblies include a deviation correction and unwinding assembly, a position deviation correction assembly, a color mark detection assembly, a tension assembly, at least one powder brushing device, at least one iron removal device, a length measurement assembly and a process deviation correction assembly which are sequentially arranged along the pole piece feeding direction; wherein, the deviation correction and unwinding assembly includes a first base arranged on a panel, a first guide rail extending in a direction perpendicular to the panel is arranged on the first base, a first slide is arranged on the first guide rail, the first slide is fixedly connected to a follower plate, the follower plate is connected to the first base through a first ball screw and a first linear guide sleeve assembly, the first ball screw is also connected to a first deviation correction motor arranged on the follower plate through a first coupling, and the first deviation correction motor can transmit the The follower plate drives the first slide to slide along the first guide rail, and a pole piece unwinding shaft that movably passes through the panel is embedded in the first slide. One end of the pole piece unwinding shaft is connected to the first unwinding motor arranged on the follower plate through a synchronous belt transmission pair, and the other end is connected to the expansion shaft body that carries the pole piece coil. The first unwinding motor can drive the pole piece unwinding shaft to drive the expansion shaft body to rotate for matching unwinding; a tensioning cylinder is arranged at one axial end of the pole piece unwinding shaft, and the tensioning cylinder can drive the tensioning mandrel that passes through the pole piece unwinding shaft and movably docked with the expansion shaft body to insert / exit the expansion shaft body, so that the expansion shaft body tightens the pole piece coil. The follower plate is also connected to a roller bracket provided with a pole piece roller through a first slide rod that movably passes through the panel; the position correction component package The invention also comprises a deflection correction frame installed on the vertical panel, two deflection correction adjustment guide rods are fixedly arranged on the end of the deflection correction frame away from the panel, a deflection correction adjustment slider is arranged on the deflection correction adjustment guide rod, a mounting plate for mounting a deflection correction sensor is fixedly connected to the deflection correction adjustment slider, and the deflection correction adjustment slider can also be driven by a differential head installed on the front positioning block of the deflection correction to drive the deflection correction adjustment slider to slide along the deflection correction adjustment guide rod to match the position correction of the pole piece; the color mark detection component comprises a detection bracket installed on the vertical panel, two optical axes are fixedly arranged on the end of the detection bracket away from the panel, a detection mounting seat driven to slide by an adjustment screw arranged between the two optical axes is movably arranged on the optical axis, and a color mark sensor is fixedly arranged on the detection mounting seat; the tension component comprises a detection bracket fixed on the roller The tension roller on the frame, the roller frame is connected to the sixth driving cylinder fixed on the panel through the tension swing arm shaft nested on the panel, and the sixth driving cylinder can drive the tension roller to swing through the tension swing arm shaft to adjust the tension of the pulled pole piece; each of the powder brushing devices includes a pole piece powder brushing roller installed in a powder suction box and driven to rotate by a driving motor, the powder suction box is fixed to the panel through a powder suction box bracket, and a first pressure roller is provided at a position matching each powder suction box on the panel, and the first pressure roller presses the pole piece against the matching pole piece powder brushing roller to perform powder brushing and dust removal; each of the iron removal devices includes a magnet installed in an iron removal seat, and the iron removal seat is fixed to the panel through a T-shaped mounting seat;The length measuring assembly includes a length measuring angle seat fixed to the panel, the length measuring angle seat is connected to the pressure roller seat on which the length measuring pressure roller is installed through a linear guide rod, the pressure roller seat is also connected to the seventh driving cylinder fixed on the length measuring angle seat, the length measuring angle seat is also movably connected to the length measuring roller that matches the length measuring pressure roller in position through a bearing, the length measuring roller is also connected to an encoder arranged at one end of its axial direction and used to measure the unwinding length of the pole piece through a coupling; the process correction assembly includes a correction base fixed to the panel, the correction base is connected to the correction roller mounting seat on which the process correction roller is installed through a correction swing angle bearing, the correction base is also provided with a rotating shaft, a support is fixed on the rotating shaft, the support is provided with an electric ball screw transmission pair that is transmission-connected to the correction roller mounting seat through a screw connector and a support shaft, the correction roller mounting seat is also movably connected to the correction base through a support plate, a cam bearing and a slide seat. ; 6. A double-station winding machine according to claim 3, characterized in that: The two sheet feeding and cutting assemblies each include a sheet feeding base mounted on the panel, a ball screw slide being arranged on the sheet feeding base, a slide plate being connected to the ball screw slide for transmission, a first ball screw slide being fixedly arranged on the slide plate, the slide plate being also connected to the pole piece cutting assembly via a cutter connecting block, the first ball screw slide being connected to a sheet feeding clamp assembly movably docked with the pole piece cutting assembly via a sheet feeding connecting block; the ball screw slide drives the slide plate to drive the pole piece cutting assembly and the first ball screw slide to move, so that the pole piece cutting assembly, the sheet feeding clamp assembly and the pole piece clamped by the sheet feeding clamp assembly move toward the upper winding station, cooperate with the first ball screw slide to drive the sheet feeding clamp assembly to move, match the sheet feeding clamp assembly to clamp the positive pole piece / negative pole piece toward the matching pole piece cutting assembly to complete the sheet feeding, and / or make the pole piece cutting assembly cut after the winding mechanism winds the positive pole piece / negative pole piece to a set length; the sheet feeding clamp assembly includes a sheet feeding connection The cam is connected to the sheet feeding support plate by a block, and a fixed pressure block is fixedly arranged on one side of the sheet feeding support plate in the width direction of the sheet feeding support plate, and the fixed pressure block is fixedly connected to the fixed sheet feeding clamp, and a pressure roller is installed through a support seat, and a support block is fixedly arranged on the other side of the width direction of the sheet feeding support plate, and the support block is movably connected to a movable roller seat through a guide rod, and the movable roller seat is provided with a sheet feeding pressure roller which is directly opposite to the pressure roller in the position and a movable sheet feeding clamp which is directly opposite to the fixed sheet feeding clamp in the position, and the movable roller seat is also transmission-connected with an eighth driving cylinder arranged on the sheet feeding support plate; the pole sheet cutting assembly comprises a cutting seat fixedly connected to the cutting knife connecting block, and a fixed knife seat for installing a fixed cutting knife is fixedly arranged on the cutting seat, and a ninth driving cylinder is arranged at the end of the cutting seat which is back to the fixed knife seat, and the ninth driving cylinder is connected to the moving knife seat through a linkage block in cooperation with two guide pillars which penetrate the cutting seat and extend to the side where the fixed knife seat is provided, and the moving knife seat is movably connected to the cutting knife pressure plate which is directly opposite to the fixed cutting knife in the position through a first guide rod in cooperation with a spring.

7. A double-station winding machine according to claim 3, characterized in that: The glue sticking mechanism comprises an upper glue base plate fixedly connected to the panel, a glue sticking base is arranged on the upper glue base plate, a vertical plate extending in a direction perpendicular to the panel is fixedly arranged on one side in the length direction of the glue sticking base, a tape reel, a pre-stretched tape assembly and a pull-cut tape assembly are arranged in sequence on one side wall of the vertical plate along its extension direction, the pull-cut tape assembly is used to receive the tape pre-stretched and relaxed from the tape reel by the pre-stretched tape assembly and pull the tape of a set length and then cut it into tape sheets; it also comprises an upper tape assembly arranged on the glue sticking base and connected to the pull-cut tape assembly, the upper tape assembly can deliver the tape sheet to the lower winding station for glue sticking at the tail of the battery cell where the positive electrode sheet is wrapped; wherein, the pre-stretched tape assembly The adhesive tape pulling assembly includes a plurality of adhesive tape rollers arranged perpendicular to the vertical plate, and the plurality of adhesive tape rollers are arranged at intervals along the extension direction of the vertical plate, and a pre-tensioning roller arranged on a pre-tensioning slider is provided between two of the plurality of adhesive tape rollers, and the pre-tensioning slider is passed through a vertically arranged guide shaft and is connected to the pre-tensioning cylinder in transmission; the adhesive tape pulling and cutting assembly includes an adhesive tape pulling cylinder arranged on the vertical plate, and the adhesive tape pulling cylinder is connected to a first slide plate hung on two fourth linear guide rails through a cylinder connecting block, and a top adhesive bottom plate is also hung on the two fourth linear guide rails, and a adhesive tape rear pressure assembly, an adhesive tape cutting assembly and an adhesive tape middle pressure assembly which are arranged in sequence along the extension direction of the vertical plate are provided on the first slide plate, and a adhesive tape The adhesive tape front pressing assembly; the adhesive tape pulling cylinder can drive the first slide plate to drive the adhesive tape rear pressing assembly, the adhesive tape cutting assembly and the adhesive tape middle pressing assembly to move toward / away from the adhesive tape front pressing assembly, cooperate with the adhesive tape rear pressing assembly, the adhesive tape middle pressing assembly and the adhesive tape front pressing assembly to clamp the adhesive tape and the adhesive tape cutting assembly to cut the adhesive tape, match the pre-stretched and relaxed adhesive tape to be sent forward and cut into adhesive tape pieces of set length; the adhesive tape front pressing assembly includes a top glue cylinder fixedly mounted on the top glue bottom plate, the top glue cylinder is connected to the top glue block, the top glue cylinder drives the top glue block to move toward the upper adhesive tape assembly and press the vacuum adsorption adhesive roller of the upper adhesive tape assembly to press the adhesive tape; the adhesive tape rear pressing assembly The adhesive tape assembly comprises a rear adhesive-pressing cylinder fixed on the first slide plate, the rear adhesive-pressing cylinder being able to drive the rear adhesive-pressing block to move vertically and cooperate with the adhesive-pressing stopper block arranged just above the rear adhesive-pressing block and fixed to the first slide plate to clamp the adhesive tape; the adhesive tape intermediate-pressure assembly comprises an intermediate adhesive-pressing cylinder fixed on the first slide plate, the intermediate adhesive-pressing cylinder being able to drive the intermediate adhesive-pressing block to move vertically until it presses against the top adhesive block located just above the intermediate adhesive-pressing block to clamp the adhesive tape; the adhesive tape cutting assembly comprises an adhesive-cutting cylinder vertically arranged on the first slide plate, the adhesive-cutting cylinder being able to drive the adhesive-cutting knife to move vertically and cut the adhesive tape clamped by the adhesive tape rear-pressure assembly, the adhesive tape intermediate-pressure assembly and the adhesive tape front-pressure assembly into adhesive tape sheets;The upper adhesive tape assembly includes a tenth driving cylinder installed at the other end of the adhesive base in the length direction, the tenth driving cylinder is connected to the first mounting seat of the rotating arm cylinder, the rotating arm cylinder is pivotally connected to the adhesive rotating block arranged on the U-shaped bracket through the joint bearing and the adhesive rotating arm, the rotating arm cylinder can drive the adhesive rotating block to swing relative to the U-shaped bracket and drive the adhesive suction and pasting assembly arranged thereon to absorb the adhesive tape sheet cut by the pulling and cutting adhesive tape assembly and send it to the tail of the battery cell where the positive electrode sheet is wrapped, the adhesive suction and pasting assembly includes a adhesive roller mounting seat fixed on the adhesive rotating block, the adhesive roller mounting seat is equipped with a vacuum adsorption adhesive roller through a bearing, the vacuum adsorption adhesive roller is also connected to the driving motor fixed on the U-shaped bracket through the first synchronous belt transmission pair and driven to rotate by the driving motor to apply adhesive. ; 8. A double-station winding machine according to claim 3, characterized in that: The unloading mechanism includes a cell taking assembly, a bad winding rejection assembly, an upper cell connecting assembly, a cell receiving assembly, a cell moving assembly, a core pressing short circuit testing assembly, a rejection assembly and a good product conveying assembly, which are arranged on the panel and are sequentially connected along the unloading direction; wherein, the cell taking assembly includes a fifth linear guide rail extending along the unloading direction, and the fifth linear guide rail is connected to a horizontal receiving rack via a core connecting block, and the core connecting block is also connected to a material taking cylinder for transmission; the material taking cylinder drives the core connecting block to drive the horizontal receiving rack to move, so as to match the cells received from the lower winding station and transferred toward the upper core connecting assembly; the bad winding rejection assembly is arranged between the cell taking assembly and the upper core connecting assembly, and includes a vertical A material blocking bracket is arranged on the panel, and a material blocking cylinder which is connected to a material blocking plate is arranged on the material blocking bracket, and the material blocking cylinder drives the material blocking plate to move so that the material blocking plate can remove the poorly wound battery cells transferred by the battery cell removal assembly from the horizontal material receiving rack; the upper lifting battery cell assembly comprises a first mounting plate arranged vertically on the panel, a sixth linear guide rail extending vertically from the panel is arranged on the first mounting plate, a core connecting slide plate is arranged on the sixth linear guide rail, and the core connecting slide plate can be driven by a transverse cylinder arranged on the first mounting plate to slide along the sixth linear guide rail, a seventh linear guide rail is vertically arranged on the core connecting slide plate, a core suction slide seat is arranged on the seventh linear guide seat, a core suction mounting block is fixedly connected to the core suction slide seat, and the core suction mounting block is provided with There are at least one row of vacuum suction nozzles, and the core suction slide is also connected to the lifting cylinder fixed on the core connecting slide; the transverse movement cylinder drives the core connecting slide to move in match, and cooperates with the lifting cylinder to drive the core suction slide to drive the core suction mounting block and the vacuum suction nozzle to move vertically, so as to match the battery cell transferred by the battery cell assembly to be sucked up and moved horizontally to just above the battery cell connecting assembly; the battery cell connecting assembly includes a second mounting plate arranged vertically on the panel, and a receiving cylinder for transmission connection to the receiving support block is vertically installed on the second mounting plate, and the receiving cylinder drives the receiving support block to move vertically and movably dock with the front support plate of the upper lifting battery cell connecting assembly and the core pressing short circuit test assembly, so as to match the support plate received by the upper lifting battery cell connecting assembly The battery cell that is lifted and fed laterally is then moved to a position flush with the front support plate; the battery cell moving assembly comprises an eighth linear guide rail extending in the direction of material removal, a slider seat is arranged on the eighth linear guide rail, the slider seat is drivingly connected to a moving cylinder arranged on the panel, a vertically arranged lifting cylinder is fixed on the slider seat, the lifting cylinder is drivingly connected to a core pulling claw frame located directly above the receiving support block and the front support plate at the setting position; the moving cylinder drives the slider seat to slide along the eighth linear guide rail, cooperates with the lifting cylinder to drive the core pulling claw frame to move vertically, and matches to move the battery cell from the receiving support block, the front support plate and the heating block of the core pressing short circuit test assembly to the front support plate, the heating block and the good product conveying assembly;The core short-circuit test assembly also includes a first fixed plate and a second fixed plate connected by a connecting rod, the heating block is fixedly arranged on the first fixed plate, and a pole ear contact block driven by a first cylinder to move vertically is arranged on the side of the heating block, the second fixed plate is connected to a down-pressing heat-insulating seat on which the down-pressing heating block is installed through a down-pressing guide rod, the down-pressing heat-insulating seat is also connected to a down-pressing cylinder arranged on the second fixed plate, and the down-pressing heat-insulating seat is also movably connected to the pole ear down-pressing block through a third guide rod and a spring, the down-pressing heating block is matched and opposite to the heating block in position, and the pole ear down-pressing block is in position The upper part matches and faces the contact block of the pole ear; the rejection assembly includes a rejection hanging plate fixedly connected to the second fixed plate through a connecting piece, the rejection hanging plate is equipped with a suction nozzle sliding block that can slide along the vertical feeding direction through a round rod, the suction nozzle sliding block is connected to the second cylinder arranged on the rejection hanging plate by driving, the suction nozzle sliding block is also connected to the suction nozzle mounting plate for mounting the pneumatic suction nozzle through a telescopic guide rod, and the suction nozzle mounting plate is also connected to the material taking cylinder arranged on the suction nozzle sliding block by driving; the good product conveying assembly is a conveyor belt docked with the pressure core short circuit test assembly, and is used to convey the good product battery cells for feeding. ;

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