A soft package lithium battery cell liquid injection packaging device

Abstract

This invention discloses a liquid injection and packaging equipment for soft-pack lithium battery cells. The equipment includes a feeding conveyor belt, a four-axis loading robot, a loading gantry robot, a front flipping platform, a front scanning platform, a front weighing platform, a front NG sorting platform, a front buffer platform, a clamping platform, a clamping conveyor line, a clamping return line, a flaring mechanism, a liquid injection mechanism, a settling mechanism, a heat sealing mechanism, a unloading gantry robot, a rear buffer platform, a rear scanning platform, a rear weighing platform, a rear NG sorting platform, a rear flipping platform, a discharge gantry robot, a tray handling robot, an empty tray feeding conveyor line, and a full tray conveyor line. This invention also incorporates a secondary flaring mechanism before liquid injection, which opens the liquid injection port of the soft-pack battery cell first, separating liquid injection from bag opening. This eliminates the need to separate the air bags and flare each cell individually during liquid injection, allowing for batch opening and then batch liquid injection, resulting in higher equipment production efficiency.

Description

[0001] The present application relates to a soft package lithium battery cell production equipment, in particular to a kind of soft package lithium battery cell injection packaging equipment. BACKGROUND

[0002] The production process of soft package battery needs to be injected, and injection is the process of injecting electrolyte into the cell before the soft package cell is packaged, so as to provide a carrier for the transmission of ions in the cell by electrolyte.The injection process of soft package cell includes opening bag, injection, standing and heat sealing process, and the existing injection process generally sets corresponding processing equipment for the above processing procedures, and processes by manual and semi-automatic processing mode of corresponding processing equipment, with low processing efficiency and large equipment area. SUMMARY

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present application is to provide a kind of soft package lithium battery cell injection packaging equipment.

[0004] The purpose of the present application is achieved by the following technical scheme: a kind of soft package lithium battery cell injection packaging equipment, the equipment is equipped with two parallel feed belts, four-axis feeding robot, feeding truss manipulator, front turnover platform, front code scanning platform, front weighing platform, front NG sorting platform, front buffer platform, clamp platform, clamp conveying line, clamp return line, flaring mechanism, injection mechanism, standing mechanism, heat sealing mechanism, unloading truss manipulator, rear buffer platform, rear code scanning platform, rear weighing platform, rear NG sorting platform, rear turnover platform, discharge truss manipulator, tray handling manipulator, tray empty tray feeding conveying line, tray full tray conveying line;Four-axis feeding robot takes two cells from two feed belts at a time, and places the cell on the front turnover platform, and turns the air bag of the cell from horizontal to vertical state;

[0005] Two feed belts are used to transport the cell from the upstream equipment to the feeding position of four-axis feeding robot;Two feed belts are equipped with automatic identification inductor, when detecting that there is cell on the belt, automatically conveying to the edge position of cell CCD camera to position the cell;After positioning, four-axis robot takes two cells according to the position provided by PLC, and then four-axis feeding robot carries the cell to cell front code scanning platform and front turnover station in turn, scans the code of the cell, turns the air bag, and uploads the information of the cell to MES system;

[0006] The upper loading truss manipulator is used for carrying the battery cell from the front turnover platform to the front code scanning platform, the front weighing station, the front NG sorting platform, the front buffer platform and the clamp platform respectively; the upper loading truss manipulator comprises a first upper loading truss manipulator, a second upper loading truss manipulator and a third upper loading truss manipulator; after the air bag of the battery cell is straightened up at the front turnover station, the first upper loading truss manipulator carries the battery cell to the front weighing station, the battery cell is weighed before being injected with liquid, and the weight information is uploaded to the MES system; the second upper loading truss manipulator carries the battery cell with code scanning and weighing defects to the NG sorting station for classification and storage, and carries the good battery cell to the front buffer platform for battery cell pairing; when the number of battery cells stored on the front buffer platform is greater than or equal to 4, the third upper loading truss manipulator carries the battery cells on the front buffer platform in groups of 4 to the battery cell clamp; the battery cell clamp buffers and fixes 8 battery cells, and the battery cell clamp is provided with a clamp conveying line and a clamp return line; the flaring mechanism flares the air bag of the battery cell, and prepares for the injection; the injection mechanism is responsible for injecting the electrolyte with a set weight into the battery cell; the standing mechanism allows the electrolyte to fully soak in the battery cell; the packaging mechanism is responsible for sealing the air bag of the battery cell once, and prepares for the formation;

[0007] The front and rear code scanning platforms are used for uploading the code information of the battery cell to the MES system;

[0008] The front weighing station is used for weighing the battery cell and uploading the weight data to the MES system;

[0009] The front NG sorting platform is used for buffering the battery cell with code scanning error and unqualified weight, and manually taking out the battery cell after storage;

[0010] The front buffer platform is used for buffering and pairing the battery cell;

[0011] The battery cell clamp is used for covering the battery cell in a fixed position; the battery cell clamp is arranged on the clamp platform;

[0012] The clamp conveying line is used for carrying the clamp to a fixed station for bag opening, injection, standing and heat sealing;

[0013] The clamp return line is located below the clamp conveying line, and is used for returning the empty clamp to the loading position, waiting for the upper loading truss manipulator to carry the battery cell to the clamp; the clamp return line is responsible for returning the empty battery cell clamp to the battery cell loading position, realizing automatic circulation of loading and unloading;

[0014] The unloading truss manipulator is used for carrying the battery cell from the clamp to the rear buffer platform, the rear code scanning platform, the rear weighing platform, the rear NG sorting platform and the rear turnover platform; the unloading truss manipulator comprises a first unloading truss manipulator, a second unloading truss manipulator and a third unloading truss manipulator, the first unloading truss manipulator is responsible for carrying the battery cell on the clamp in groups of four to the rear buffer platform; the second unloading truss manipulator carries the battery cell in groups of three from the buffer platform to the rear code scanning and weighing platform to scan and weigh the battery cell and upload the information to the MES system; the third unloading truss manipulator carries the defective battery cell to the rear NG sorting platform to store the battery cell in groups, and carries the good battery cell to the rear turnover platform to turn over the angle of the battery cell;

[0015] The rear buffer platform is used for buffering the battery cell from the clamp;

[0016] The rear code scanning platform is used for scanning the code of the battery cell and uploading to the MES system;

[0017] The rear weighing platform is used for weighing the battery cell and uploading the weight to the MES system;

[0018] The rear NG sorting platform is used for classifying and buffering the defective battery cell in the expansion, code scanning and weighing;

[0019] The rear turnover platform is used for turning over the battery cell from the air bag vertically to the inclined battery cell, and waiting for the unloading truss manipulator to take the material; the unloading truss manipulator is used for carrying the battery cell from the rear turnover platform to the material tray for stacking;

[0020] The tray carrying manipulator is used for carrying the empty tray to the battery cell unloading position;

[0021] The empty tray feeding conveying line is used for conveying the empty tray into the equipment;

[0022] The full tray discharging conveying line is used for conveying the full tray to the outside of the equipment; one end of the empty tray feeding conveying line and the full tray discharging conveying line is provided with a tray lifting mechanism; the tray carrying manipulator is responsible for carrying the empty battery cell tray to the battery cell discharging station to realize automatic unloading cycle; in addition, the AVG is arranged to automatically dock the empty tray feeding conveying line and the full tray discharging conveying line, so that the equipment can realize automatic unloading without human intervention.

[0023] The unloading truss manipulator takes five groups of battery cells from the rear turnover platform at a time and places them on the battery cell tray, each battery cell tray can store 50 battery cells, and the battery cell tray can be stacked up to 15 trays.

[0024] As an improvement of the soft package lithium battery cell liquid injection packaging equipment, the flaring mechanism comprises an upper bag opening mounting plate and a lower bag opening mounting plate, four corners of the upper bag opening mounting plate are provided with guide sleeves, and four corners of the lower bag opening mounting plate are provided with guide rods, the guide rods are arranged in the guide sleeves, the upper bag opening mounting plate is provided with a bag opening lifting cylinder and a plurality of empty space avoiding positions, and the lower bag opening mounting plate is provided with a plurality of bag suction mechanisms at intervals.

[0025] The flaring mechanism further comprises an intermediate lifting plate, and a plurality of bag opening scraper mechanisms are arranged at intervals on the intermediate lifting plate.

[0026] As an improvement of the soft package lithium battery cell liquid injection packaging equipment, the bag suction mechanism comprises a bag suction control cylinder, the bag suction control cylinder controls the movement of a bag suction lifting support, four groups of bag opening lifting guide rods are arranged at intervals on the bag suction lifting support, each group of bag opening lifting guide rods has two bag opening guide rods, the bottom of each group of bag opening lifting guide rods is connected to a bag suction plate, two inclined bag suction guide holes are arranged in mirror image on the bag suction plate, a bag suction guide wheel is arranged in each bag suction guide hole, the bag suction guide wheel is connected to a suction disc mounting rod, the bottom of the suction disc mounting rod is provided with a suction disc mounting plate, a plurality of suction discs are arranged at intervals on the suction disc mounting plate, one side of the suction disc mounting rod is connected to a linear sliding rail through a sliding block, and every two corresponding suction disc mounting rods jointly open the bag opening of one battery cell.

[0027] As an improvement of the soft package lithium battery cell liquid injection packaging equipment, the bag opening scraper mechanism comprises a scraper lifting control motor mounted on the intermediate lifting plate and a lower support connected to the upper bag opening mounting plate through a guide rod, the scraper lifting control motor controls the lifting of a scraper support, the scraper support has four connecting rods, the connecting rods are arranged in the lower support, the lower ends of every two connecting rods are connected to a scraper guide plate, two inclined scraper guide holes are arranged in mirror image on the scraper guide plate, a sliding rail mounting plate is arranged on the lower support, a sliding rail is arranged on the sliding rail mounting plate, a scraper mounting plate is slidably connected to the sliding rail through a sliding block, a scraper is arranged at the bottom of the scraper mounting plate, a scraper guide wheel is arranged at the middle of the scraper mounting plate, the scraper guide wheel extends into the scraper guide hole, a screw nut is arranged at the middle of the scraper support, an output shaft of the scraper lifting control motor is provided with a lifting transmission screw rod, the lifting transmission screw rod is screwed with the screw nut, the scraper extends out of the lower bag opening mounting plate, and the upper end of the scraper lifting control motor extends out of the empty space avoiding position.

[0028] As an improvement of the soft package lithium battery cell liquid injection packaging equipment, the opening direction of the bag suction mechanism is transverse, the opening direction of the bag opening scraper mechanism is longitudinal, and the scraper extends between the two suction disc mounting plates.

[0029] The bag suction control cylinder controls the opening of the two suction plate mounting plates, the bag opening lifting cylinder controls the descent of the plurality of bag opening scrapers, the scrapers extend into the bag opening of the battery cell, the scraper lifting control motor controls the descent of the scraper support, the scraper guide wheels slide along the inclined scraper guide holes, the two scrapers are guided to open along the two mirror image scraper guide holes, the bag opening is scraped, and the secondary bag opening is realized.

[0030] As an improvement of the soft package lithium battery cell liquid injection packaging equipment, the battery cell bag opening on the cell clamp is completed and is conveyed to the lower side of the liquid injection mechanism by the clamp conveying line.

[0031] The liquid injection mechanism comprises a liquid injection cylinder mounting plate and a liquid injection cavity, the middle part of the liquid injection cylinder mounting plate is provided with a liquid injection cylinder, the upper end of the liquid injection cavity is provided with a liquid injection lower mounting plate, the four corners of the liquid injection lower mounting plate are each provided with a liquid injection guide rod, four liquid injection guide sleeves are arranged on the liquid injection cylinder mounting plate at intervals, the liquid injection guide rods are arranged on the liquid injection guide sleeves, the upper ends of the liquid injection guide rods are connected through a connecting frame, the piston rod end of the liquid injection cylinder is connected to the connecting frame, and a plurality of liquid injection needle control mechanisms are arranged on the liquid injection lower mounting plate at intervals.

[0032] As an improvement of the soft package lithium battery cell liquid injection packaging equipment, the liquid injection needle control mechanism comprises a cylinder mounting vertical plate, one side of the cylinder mounting vertical plate is provided with a liquid injection needle control cylinder, the piston rod end of the liquid injection needle control cylinder is provided with a connecting plate, the connecting plate is provided with a liquid injection needle mounting plate, the liquid injection needle mounting plate is provided with a liquid injection needle, and the liquid injection needle extends into the liquid injection cavity.

[0033] When the liquid injection mechanism is used for liquid injection, the liquid injection cylinder controls the liquid injection cavity to descend and cover the clamp, and the liquid injection needle control cylinder controls the liquid injection needle to descend and insert into the bag opening of the battery cell.

[0034] As an improvement of the soft package lithium battery cell liquid injection packaging equipment, the heat sealing mechanism comprises a heat sealing cavity, an intermediate connecting plate and an upper connecting plate, both sides of the upper connecting plate are respectively provided with side plates, groove holes are arranged on the two side plates, four heat sealing lifting guide rods are arranged on the heat sealing cavity at intervals, four heat sealing guide sleeves are arranged on the intermediate connecting plate at intervals, the heat sealing lifting guide rods are arranged in the heat sealing guide sleeves, a heat sealing lifting control cylinder is arranged in the middle part of the intermediate connecting plate, and the piston rod of the heat sealing lifting control cylinder is connected to the heat sealing cavity.

[0035] The upper end of the intermediate connecting plate is provided with a front guide rod and a rear guide rod, the front guide rod is provided with a cam at both ends, the cam extends into the slot hole, the rear guide rod is fixed on the side plate at both ends, one side of the upper connecting plate is provided with a turnover cylinder mounting plate, the turnover cylinder mounting plate is provided with a turnover control cylinder, the piston rod end of the turnover control cylinder is provided with a U-shaped connecting piece, the U-shaped connecting piece is rotatably connected to the mounting seat through a shaft, the mounting seat is mounted on the intermediate connecting plate, and the end of the turnover control cylinder is provided with a connecting seat which is rotatably connected to the turnover cylinder mounting plate through a pin.

[0036] As an improvement of the soft package lithium battery cell liquid injection packaging equipment, upper and lower limit position cylinders are arranged on the two side plates, when the turnover control cylinder controls the heat sealing cavity to be turned over to a side standing state, the upper limit position cylinder controls the piston rod to extend and abut against the bottom surface of the intermediate connecting plate, and when the turnover control cylinder controls the heat sealing cavity to be turned over to a horizontal state, the lower limit position cylinder controls the piston rod to extend and abut against the upper end surface of the intermediate connecting plate.

[0037] A plurality of heat sealing jaw cylinders are arranged on the heat sealing cavity in a spaced manner, each heat sealing jaw cylinder controls the movement of two clamping arms, and the clamping arms are both provided with a heat sealing plate, and the clamping surface of the heat sealing plate is sawtooth-shaped.

[0038] As an improvement of the soft package lithium battery cell liquid injection packaging equipment, the static placement mechanism comprises a static placement cavity and a static placement control cylinder mounting plate, the static placement cavity is movably connected to the static placement control cylinder mounting plate through a plurality of static placement lifting guide rods and guide sleeves, the middle part of the static placement control cylinder mounting plate is provided with a static placement lifting control cylinder, the piston rod of the static placement lifting control cylinder is connected to a guide rod connecting frame, and the guide rod connecting frame is connected to the static placement lifting guide rods.

[0039] The static placement cavity is provided with a shaft vacuum pipeline and a drying gas pipeline, during static placement work, the static placement lifting control cylinder controls the static placement cavity to descend and cover the battery cell clamp, and the shaft vacuum pipeline and the drying gas pipeline alternately perform vacuumizing and vacuum breaking on the static placement cavity.

[0040] The beneficial effects of this invention are as follows: The soft-pack lithium battery cell liquid injection packaging equipment of this invention horizontally transports the battery cells to the loading position through two feeding conveyor lines. A four-axis loading robot picks up two battery cells at a time from the two feeding conveyor belts and places the battery cells on the front flipping platform. The air bag of the battery cell is flipped from horizontal to vertical. After the air bag of the battery cell is upright at the front flipping station, the first loading gantry robot moves the battery cell to the front weighing station for pre-liquid injection weighing and uploads the weight information to the MES system. The second loading gantry robot moves the battery cells that fail the barcode scanning and weighing to the NG sorting station for classification and storage, and moves the good battery cells to the front buffer platform for pairing. When the number of battery cells stored on the front buffer platform is greater than or equal to 4, the third loading gantry robot moves the battery cells from the front buffer platform to the battery cell fixture in groups of 4. The battery cell fixture buffers and fixes 8 battery cells, and a clamp is provided under the battery cell fixture. The invention comprises a conveyor line and a fixture return line; a flaring mechanism flares the cell air bag to prepare for electrolyte injection; an injection mechanism injects a set weight of electrolyte into the cell; a settling mechanism allows the electrolyte to fully impregnate the cell; a sealing mechanism seals the cell air bag to prepare for formation; after heat sealing, the cell is conveyed to the unloading position by the fixture conveyor line; a first unloading gantry robot moves four cells at a time from the cell fixture to the rear buffer platform; a second unloading gantry robot moves three cells at a time from the buffer platform to the rear barcode and weighing platform for barcode scanning, weighing, and uploading information to the MES system; a third unloading gantry robot moves defective cells to the rear NG sorting platform for classification and storage, and good cells to the rear flipping platform for tilting; this invention achieves automated continuous processing of soft-pack cell electrolyte injection, with fully automated production from loading to unloading.

[0041] The present invention also includes a secondary flaring mechanism before liquid injection, which can open the liquid injection port of the soft-pack battery cell first, separating liquid injection from bag opening. It eliminates the need to separate the air bag flaring of each battery cell individually during liquid injection. By opening bags in batches and then injecting liquid in batches, the equipment has higher production efficiency. Attached Figure Description

[0042] Figure 1 This is a perspective view of the present invention;

[0043] Figure 2 This is a perspective view of the present invention from another direction;

[0044] Figure 3 This is a perspective view of the flaring mechanism of the present invention;

[0045] Figure 4 This is a front view of the flaring mechanism of the present invention;

[0046] Figure 5 This is a perspective view of the liquid injection mechanism of the present invention;

[0047] Figure 6 This is a front view of the injection mechanism of the present invention;

[0048] Figure 7 This is a perspective view of the heat sealing mechanism of the present invention;

[0049] Figure 8 This is a front view of the heat sealing mechanism of the present invention;

[0050] Figure 9 This is a top view of the heat sealing mechanism of the present invention;

[0051] Figure 10 This is a top view of the present invention;

[0052] Figure 11 yes Figure 2 Enlarged view of point A in the image. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0054] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0055] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0056] like Figures 1-11As shown, a soft-pack lithium battery cell liquid injection packaging equipment includes: two parallel feeding conveyors 2; a four-axis feeding robot 26; a feeding gantry robot 28; a front flipping platform 27; a front barcode weighing platform 8; a front NG sorting platform; a front buffer platform 9; a clamping platform; a clamping conveyor line 13; a clamping return line 14; a flaring mechanism 3; a liquid injection mechanism 4; a settling mechanism 5; a heat sealing mechanism 6; a unloading gantry robot 29; a rear buffer platform 16; a rear barcode weighing platform 18; a rear NG sorting platform; a rear flipping platform 20; a discharge gantry robot 25; a tray handling robot 24; an empty tray feeding conveyor line 22; a full tray feeding conveyor line 23; and a four-axis feeding robot 26 feeding from two... One feeding conveyor belt 2 picks up two battery cells at a time and places them on the front flipping platform 27, flipping the air bags of the battery cells from horizontal to vertical. Two feeding conveyor belts 2 are used to transport battery cells from upstream equipment to the loading position of the four-axis loading robot 26. The two feeding conveyor belts 2 are equipped with automatic identification sensors. When a battery cell is detected on the conveyor belt, it is automatically transported to the edge gripping position of the battery cell CCD camera for positioning. After positioning, the four-axis loading robot 26 picks up two battery cells at a time according to the position provided by the PLC. After picking up the battery cells, the robot sequentially transports the battery cells to the front barcode scanning platform and the front flipping station, scans the battery cell barcode, flips the air bags, and uploads the battery cell information to the MES system.

[0057] The loading gantry robot 28 is used to transport battery cells from the front tilting platform to the front barcode and weighing station 8, the front NG sorting platform, the front buffer platform 9, and seven clamping platforms. The loading gantry robot 28 includes a first loading gantry robot 7, a second loading gantry robot 10, and a third loading gantry robot 12. After the air bag of the battery cell is uprighted on the front tilting platform 27, the first loading gantry robot 7 transports the battery cell to the front barcode and weighing station 8, weighs it before electrolyte injection, and uploads the weight information to the MES system. The second loading gantry robot 10 transports the battery cells that fail barcode scanning and weighing to the NG sorting station for classification and storage, and transports the good battery cells to the front buffer platform. On platform 9, battery cells are paired. When the number of battery cells stored on the current buffer platform 9 is greater than or equal to 4, the third loading gantry robot 12 transports the battery cells from the front buffer platform in groups of 4 to the battery cell fixture 11. The battery cell fixture 11 buffers and fixes 8 battery cells. The battery cell fixture 11 is equipped with a fixture conveyor line and a fixture return line. The flaring mechanism 3 flares the battery cell air bag to prepare for electrolyte injection. The electrolyte injection mechanism 4 is responsible for injecting a set weight of electrolyte into the battery cell. The settling mechanism 5 allows the electrolyte to fully wet the inside of the battery cell. The sealing mechanism 6 is responsible for sealing the battery cell air bag once to prepare for formation. The front and rear barcode scanning platforms are used to upload the battery cell code information to the MES system.

[0058] The front scanning and weighing station 8 is used to weigh the battery cells and upload the weight data to the MES system;

[0059] The front NG sorting platform is used to buffer battery cells that have scanning errors or are not up to weight standards, and they are manually removed when the storage is full.

[0060] The front cache platform 9 is used for cell cache pairing;

[0061] The battery cell clamp 11 is used to wrap the battery cell in a fixed position; the battery cell clamp 11 is set on the clamp platform; the clamp conveyor line 13 is used to transport the battery cell clamp 11 to a fixed station for opening, liquid injection, settling and heat sealing; the clamp return line 14 is located below the clamp conveyor line, and the clamp return line 14 is used to return the empty battery cell clamp 11 to the loading position, waiting for the loading gantry robot 28 to transport the battery cell onto the battery cell clamp 11; the clamp return line 14 is responsible for returning the empty battery cell clamp to the battery cell loading position to realize automatic cyclic loading and unloading; both ends of the clamp return line 14 are equipped with a fixture lifting mechanism 15; the fixture lifting mechanism 15 includes a fixture lifting control cylinder, which controls the lifting of a lifting plate.

[0062] The unloading gantry robot 29 is used to transport battery cells from the fixture to the rear buffer platform 16, the rear barcode weighing platform 18, the rear NG sorting platform, and the rear flipping platform 20. The unloading gantry robot 29 includes a first unloading gantry robot 17, a second unloading gantry robot 19, and a third unloading gantry robot 21. The first unloading gantry robot 17 is responsible for transporting the battery cells in groups of four from the battery cell fixture 11 to the rear buffer platform 16. The second unloading gantry robot 19 transports the battery cells in groups of three from the buffer platform to the rear barcode and weighing platform 18 for barcode scanning and weighing, and uploads the information to the MES system. The third unloading gantry robot 21 transports the defective battery cells to the rear NG sorting platform for classification and storage, and transports the good battery cells to the rear flipping platform to flip the battery cell angle.

[0063] The post-cache platform 16 is used to cache the battery cells coming off the fixture;

[0064] The post-scanning platform is used to scan the codes on the battery cells and upload the data to the MES system;

[0065] The subsequent barcode scanning and weighing platform 18 is used to weigh the battery cells and upload the weight to the MES system;

[0066] The post-NG sorting platform is used to classify and buffer defective battery cells based on their flaring, barcode scanning, and weighing.

[0067] The rear flipping platform 20 is used to flip the battery cell from vertical to tilted position, so that the unloading gantry robot 25 can pick up the material.

[0068] The unloading gantry robot 25 is used to transport the battery cells from the rear tilting platform 20 to the material tray for stacking.

[0069] The material tray handling robot 24 is used to transport empty material trays to the battery cell unloading position;

[0070] The empty tray feeding conveyor line 22 is used to convey empty trays into the equipment;

[0071] The full-pan discharge conveyor 23 is used to transport full-pan materials to the outside of the equipment; both the empty-pan feeding conveyor 22 and the full-pan discharge conveyor 23 are equipped with a pallet lifting mechanism at one end; the pallet handling robot 24 is responsible for transporting the empty cell pallet to the cell discharge station to realize automatic unloading cycle; in addition, an AVG that automatically docks with the empty pallet feeding conveyor 22 and the full-pan discharge conveyor 23 is set up to realize automatic unloading of the equipment without human intervention.

[0072] The unloading gantry robot 25 picks up five battery cells at a time from the rear tilting platform and places them on the battery cell tray. Each battery cell tray has five rows and ten columns, and one tray can store 50 battery cells. The battery cell trays can be stacked up to fifteen trays.

[0073] Preferably, the flaring mechanism 3 includes an upper bag-opening mounting plate 31 and a lower bag-opening mounting plate 32. The upper bag-opening mounting plate 31 is provided with guide sleeves at each of its four corners, and the lower bag-opening mounting plate 32 is provided with guide rods at each of its four corners. The guide rods pass through the guide sleeves. The upper bag-opening mounting plate 31 is provided with a bag-opening lifting cylinder 33 and multiple clearance positions 34. The lower bag-opening mounting plate 32 is provided with multiple bag-suction mechanisms 35 at intervals.

[0074] The flaring mechanism 3 also includes an intermediate lifting plate 36, on which multiple bag-opening scraper mechanisms 37 are spaced apart.

[0075] Preferably, the suction bag mechanism 35 includes a suction bag control cylinder 351, which controls the movement of a suction bag lifting bracket 352. The suction bag lifting bracket 352 is provided with four sets of opening lifting guide rods 353 at intervals. Each set of opening lifting guide rods 353 has two opening guide rods. The bottom of each set of opening lifting guide rods 353 is connected to a suction bag plate 354. The suction bag plate 354 is provided with two inclined suction bag guide holes 355 mirrored on it. Each suction bag guide hole 355 is provided with a suction bag guide wheel 356. The suction bag guide wheel 356 is connected to a suction cup mounting rod 357. The bottom of the suction cup mounting rod 357 is provided with a suction cup mounting plate 358. Multiple suction cups 359 are provided at intervals on the suction cup mounting plate 358. One side of the suction cup mounting rod 357 is connected to a linear slide rail through a slider. Every two corresponding suction cup mounting rods 357 open the bag opening of one battery cell.

[0076] Preferably, the bag-opening scraper mechanism 37 includes a scraper lifting control motor 371 mounted on the intermediate lifting plate 36 and a lower bracket 372 connected to the bag-opening mounting plate 31 via guide rods. The scraper lifting control motor 371 controls the lifting of a scraper bracket 373. The scraper bracket 373 has four connecting rods 374, which pass through the lower bracket 372. The lower ends of every two connecting rods 374 are connected to a scraper guide plate 375. The scraper guide plate 375 has two inclined scraper guide holes 376 mirrored on it. The lower bracket 372 is provided with a slide rail mounting plate 377. The mounting plate 377 is equipped with a slide rail, which is slidably connected to the scraper mounting plate 378 via a slider. The scraper 379 is located at the bottom of the scraper mounting plate 378, and the scraper guide wheel 370 is located in the middle of the scraper mounting plate 378. The scraper guide wheel 370 extends into the scraper guide hole 376. The middle of the scraper bracket 373 is equipped with a lead screw nut. The output shaft of the scraper lifting control motor 371 is equipped with a lifting transmission lead screw 3710, which is screwed to the lead screw nut. The scraper 379 extends out from the lower mounting plate 32 of the bag opening, and the upper end of the scraper lifting control motor 371 extends out from the clearance position 34.

[0077] Preferably, the bag-opening direction of the suction bag mechanism 35 is horizontal, and the bag-opening scraper mechanism 37 is vertical, with the scraper extending between the two suction cup mounting plates;

[0078] After the suction bag control cylinder 351 controls the two suction cup mounting plates 358 to open, the bag opening lifting cylinder 33 controls the multiple bag opening scraper mechanisms 37 to descend, so that the scraper 379 extends into the opening of the battery cell bag. During the process of the scraper lifting control motor 371 controlling the scraper bracket 373 to descend, the scraper guide wheel 370 slides along the inclined scraper guide hole 376, so that the two scrapers 379 are guided to open along the two mirror-set scraper guide holes 376, scraping open the bag opening and realizing secondary bag opening.

[0079] Preferably, after the battery cells on the battery cell clamp 11 are unpacked, they are transported by the clamp conveyor line 13 to the area directly below the liquid injection mechanism 4;

[0080] The injection mechanism 4 includes an injection cylinder mounting plate 41 and an injection chamber 42. An injection cylinder 43 is provided in the middle of the injection cylinder mounting plate 41. An injection lower mounting plate 44 is provided at the upper end of the injection chamber 42. An injection guide rod is provided at each of the four corners of the injection lower mounting plate 44. Four injection guide sleeves are provided at intervals on the injection cylinder mounting plate 41. The injection guide rods pass through the injection guide sleeves. The upper ends of the injection guide rods are connected by a connecting frame 45. The piston rod end of the injection cylinder 43 is connected to the connecting frame 45. Multiple injection needle control mechanisms 46 are provided at intervals on the injection lower mounting plate 44.

[0081] Preferably, the injection needle control mechanism 46 includes a cylinder mounting plate 461, an injection needle control cylinder 462 is provided on one side of the cylinder mounting plate 461, a connecting plate 463 is provided at the piston rod end of the injection needle control cylinder 462, an injection needle mounting plate 464 is provided on the connecting plate 463, and an injection needle 465 is provided on the injection needle mounting plate 464, with the injection needle 465 extending into the injection cavity 42;

[0082] When the liquid injection mechanism 4 injects liquid, the liquid injection cylinder 43 controls the liquid injection chamber 42 to descend and cover the cell clamp 11, and the liquid injection needle control cylinder 462 controls the liquid injection needle 465 to descend, so that the liquid injection needle is inserted into the cell bag opening.

[0083] Preferably, the heat sealing mechanism 6 includes a heat sealing cavity 61, an intermediate connecting plate 62 and an upper connecting plate 63. Side plates 64 are provided on both sides of the upper connecting plate 63, and slots 65 are provided on both side plates 64. Four heat sealing lifting guide rods are provided at intervals on the heat sealing cavity 61. Four heat sealing guide sleeves are provided at intervals on the intermediate connecting plate 62. The heat sealing lifting guide rods pass through the heat sealing guide sleeves. A heat sealing lifting control cylinder 66 is provided in the middle of the intermediate connecting plate 62. The piston rod of the heat sealing lifting control cylinder 66 is connected to the heat sealing cavity 61.

[0084] The upper front side of the intermediate connecting plate 62 is provided with a front guide rod 67 and the rear side is provided with a rear guide rod 68. The two ends of the front guide rod 67 are respectively provided with cams 69, which extend into the slot 65. The two ends of the rear guide rod 68 are respectively fixed on the side plate 64. The side of the upper connecting plate 63 is provided with a tilting cylinder mounting plate 60. The tilting cylinder mounting plate 60 is provided with a tilting control cylinder 601. The piston rod end of the tilting control cylinder 601 is provided with a U-shaped connector 602. The U-shaped connector 602 is rotatably connected to the mounting base 603 through a shaft. The mounting base 603 is mounted on the intermediate connecting plate 62. The end of the tilting control cylinder 601 is provided with a connecting seat. The connecting seat is rotatably connected to the tilting cylinder mounting plate 60 through a pin.

[0085] Preferably, an upper limit cylinder 604 and a lower limit cylinder 605 are provided on the two side plates 64 at intervals. When the flip control cylinder 601 controls the heat sealing cavity 61 to flip to the side upright state, the upper limit cylinder 604 controls the piston rod to extend and abut against the bottom surface of the middle connecting plate 62. When the flip control cylinder 601 controls the heat sealing cavity 61 to flip to the horizontal state, the lower limit cylinder 605 controls the piston rod to extend and abut against the upper end surface of the middle connecting plate 62.

[0086] Multiple heat-sealing gripper cylinders 606 are spaced apart on the heat-sealing cavity 61. Each heat-sealing gripper cylinder controls the movement of two gripping arms. Each gripping arm is equipped with a heat-sealing plate, and the gripping surface of the heat-sealing plate is serrated.

[0087] Preferably, the stationary mechanism 5 includes a stationary cavity 51 and a stationary control cylinder mounting plate 52. The stationary cavity 51 is movably connected to the stationary control cylinder mounting plate 52 via multiple stationary lifting guide rods 55 and guide sleeves. A stationary lifting control cylinder 53 is provided in the middle of the stationary control cylinder mounting plate 52. The piston rod of the stationary lifting control cylinder 53 is connected to the guide rod connecting frame 54, and the guide rod connecting frame 54 is connected to the stationary lifting guide rod 55.

[0088] The settling chamber 51 is equipped with a shaft vacuum pipe 56 and a drying gas pipe 57. During the settling operation, the settling lifting control cylinder 53 controls the settling chamber 51 to descend and cover the clamp 13. The shaft vacuum pipe 56 and the drying gas pipe 57 alternately evacuate and break the vacuum in the settling chamber 51 to accelerate the settling of the electrolyte.

[0089] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and structure of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid injection packaging device for soft-pack lithium battery cells, characterized in that, The equipment is equipped with two parallel feeding conveyors, a four-axis loading robot, a loading gantry robot, a front tilting platform, a front scanning platform, a front weighing platform, a front NG sorting platform, a front buffer platform, a clamping platform, a clamping conveyor line, a clamping return line, a flaring mechanism, a liquid injection mechanism, a settling mechanism, a heat sealing mechanism, a unloading gantry robot, a rear buffer platform, a rear scanning platform, a rear weighing platform, a rear NG sorting platform, a rear tilting platform, a discharge gantry robot, a tray handling robot, an empty tray feeding conveyor line, and a full tray feeding conveyor line. The four-axis loading robot picks up two battery cells at a time from the two feeding conveyors and places them on the front tilting platform, tilting the air bags of the battery cells from horizontal to an upright position. The two feeding conveyors are used to transport battery cells from upstream equipment to the loading position of the four-axis loading robot. The loading gantry robot is used to transport battery cells from the front flipping platform to the front scanning platform, the front weighing station, the front NG sorting platform, the front buffer platform, and seven clamping platforms; the front and rear scanning platforms upload the battery cell code information to the MES system. The front weighing station is used to weigh the battery cells and upload the weight data to the MES system; The front NG sorting platform is used to buffer battery cells that have scanning errors or are not up to weight standards, and they are manually removed when the storage is full. The pre-caching platform is used for cell cache pairing; Battery cell clamps are used to hold battery cells in a fixed position; The fixture conveyor line is used to transport fixtures to fixed workstations for bag opening, liquid injection, settling and heat sealing; The fixture return line is located below the fixture conveyor line. The fixture return line is used to return empty fixtures to the loading position, waiting for the loading gantry robot to transport the battery cells onto the fixture. The unloading gantry robot is used to move battery cells from the fixture to the rear buffer platform, rear barcode scanning platform, rear weighing platform, rear NG sorting platform and rear flipping platform; The post-caching platform is used to cache the battery cells coming off the fixture; The post-scanning platform is used to scan the codes on the battery cells and upload the data to the MES system; The post-weighing platform is used to weigh the battery cells and upload the weight to the MES system; The post-NG sorting platform is used to classify and buffer defective battery cells based on their flaring, barcode scanning, and weighing. The rear-tilting platform is used to flip the battery cells from vertical to tilted positions, ready for the discharge gantry robot to pick them up. The discharge gantry robot is used to transport the battery cells from the rear-tilting platform to the material tray for stacking. The material tray transport robot is used to transport empty material trays to the battery cell unloading position. The empty tray feeding conveyor is used to transport empty material trays into the equipment. The full tray discharge conveyor is used to transport full material trays to the outside of the equipment. Both the empty tray feeding conveyor and the full tray discharge conveyor are equipped with a tray lifting mechanism at one end. The discharge gantry robot picks up five battery cells at a time from the rear-tilting platform and places them on the battery cell material tray. Each battery cell material tray has five rows and ten columns, and one battery cell material tray can store 50 battery cells. The battery cell material trays can be stacked up to fifteen trays.

2. The liquid injection packaging equipment for soft-pack lithium battery cells according to claim 1, characterized in that, The flaring mechanism includes an upper bag-opening mounting plate and a lower bag-opening mounting plate. Guide sleeves are provided at each of the four corners of the upper bag-opening mounting plate, and guide rods are provided at each of the four corners of the lower bag-opening mounting plate. The guide rods pass through the guide sleeves. The upper bag-opening mounting plate is equipped with a bag-opening lifting cylinder and multiple clearance positions. Multiple bag-suction mechanisms are spaced apart on the lower bag-opening mounting plate. The flaring mechanism also includes an intermediate lifting plate, on which multiple bag-opening scraper mechanisms are spaced apart.

3. The liquid injection packaging equipment for soft-pack lithium battery cells according to claim 2, characterized in that, The suction bag mechanism includes a suction bag control cylinder that controls the movement of a suction bag lifting bracket. The suction bag lifting bracket has four sets of opening lifting guide rods spaced apart. Each set of opening lifting guide rods has two opening guide rods, and the bottom of each set is connected to a suction bag plate. The suction bag plate has two inclined suction bag guide holes mirrored on it. Each suction bag guide hole contains a suction bag guide wheel, which is connected to a suction cup mounting rod. The bottom of the suction cup mounting rod has a suction cup mounting plate, and multiple suction cups are spaced apart on the suction cup mounting plate. One side of the suction cup mounting rod is connected to a linear slide rail via a slider. Every two corresponding suction cup mounting rods together open the bag opening of one battery cell.

4. The soft-pack lithium battery cell liquid injection packaging equipment according to claim 3, characterized in that, The bag-opening scraper mechanism includes a scraper lifting control motor mounted on a middle lifting plate and a lower bracket connected to the bag-opening mounting plate via guide rods. The scraper lifting control motor controls the lifting of a scraper bracket. The scraper bracket has four connecting rods, which pass through the lower bracket. The lower ends of every two connecting rods are connected to a scraper guide plate. The scraper guide plate has two inclined scraper guide holes mirrored on it. The lower bracket has a slide rail mounting plate with a slide rail. The slide rail is slidably connected to the scraper mounting plate via a slider. The scraper is located at the bottom of the scraper mounting plate, and a scraper guide wheel is located in the middle of the scraper mounting plate. The scraper guide wheel extends into the scraper guide hole. A lead screw nut is located in the middle of the scraper bracket. The output shaft of the scraper lifting control motor has a lifting transmission lead screw, which is screwed to the lead screw nut. The scraper extends from the bag-opening lower mounting plate, and the upper end of the scraper lifting control motor extends from the clearance position.

5. The soft-pack lithium battery cell liquid injection packaging equipment according to claim 4, characterized in that, The bag-opening mechanism opens the bag horizontally, while the bag-opening scraper mechanism opens the bag vertically. The scraper extends between the two suction cup mounting plates. After the bag-opening control cylinder controls the two suction cup mounting plates to open, the bag-opening lifting cylinder controls the multiple bag-opening scraper mechanisms to descend, causing the scraper to extend into the opening of the battery cell bag. During the descent of the scraper support controlled by the scraper lifting control motor, the scraper guide wheel slides along the inclined scraper guide hole, causing the two scrapers to open along the two mirror-shaped scraper guide holes, scraping open the bag opening and achieving secondary bag opening.

6. The liquid injection packaging equipment for soft-pack lithium battery cells according to claim 1, characterized in that, After the battery cells on the battery cell clamp are unpacked, they are conveyed by the clamp conveyor line to the area directly below the liquid injection mechanism; The injection mechanism includes an injection cylinder mounting plate and an injection chamber. An injection cylinder is located in the middle of the injection cylinder mounting plate. A lower injection mounting plate is located at the upper end of the injection chamber. Injection guide rods are located at the four corners of the lower injection mounting plate. Four injection guide sleeves are spaced apart on the injection cylinder mounting plate. The injection guide rods pass through the injection guide sleeves. The upper ends of the injection guide rods are connected by a connecting frame. The piston rod end of the injection cylinder is connected to the connecting frame. Multiple injection needle control mechanisms are spaced apart on the lower injection mounting plate.

7. The liquid injection packaging equipment for soft-pack lithium battery cells according to claim 6, characterized in that, The injection needle control mechanism includes a cylinder mounting plate, on one side of which is an injection needle control cylinder. The piston rod end of the injection needle control cylinder is provided with a connecting plate, and the connecting plate is provided with an injection needle mounting plate. An injection needle is provided on the injection needle mounting plate, and the injection needle extends into the injection cavity. When the injection mechanism injects liquid, the injection cylinder controls the injection cavity to descend and cover the clamp, and the injection needle control cylinder controls the injection needle to descend, so that the injection needle is inserted into the bag opening of the battery cell.

8. The liquid injection packaging equipment for soft-pack lithium battery cells according to claim 1, characterized in that, The heat sealing mechanism includes a heat sealing cavity, an intermediate connecting plate, and an upper connecting plate. Side plates are provided on both sides of the upper connecting plate, and slots are provided on both side plates. Four heat sealing lifting guide rods are spaced apart on the heat sealing cavity. Four heat sealing guide sleeves are spaced apart on the intermediate connecting plate. The heat sealing lifting guide rods pass through the heat sealing guide sleeves. A heat sealing lifting control cylinder is provided in the middle of the intermediate connecting plate, and the piston rod of the heat sealing lifting control cylinder is connected to the heat sealing cavity. The upper front side of the intermediate connecting plate is provided with a front guide rod and the rear side is provided with a rear guide rod. The two ends of the front guide rod are respectively provided with cams, which extend into the slot. The two ends of the rear guide rod are respectively fixed to the side plate. One side of the upper connecting plate is provided with a tilting cylinder mounting plate. The tilting cylinder mounting plate is provided with a tilting control cylinder. The piston rod end of the tilting control cylinder is provided with a U-shaped connector. The U-shaped connector is rotatably connected to the mounting base through a shaft. The mounting base is mounted on the intermediate connecting plate. The end of the tilting control cylinder is provided with a connecting seat. The connecting seat is rotatably connected to the tilting cylinder mounting plate through a pin.

9. The liquid injection packaging equipment for soft-pack lithium battery cells according to claim 8, characterized in that, The two side plates are provided with an upper limit cylinder and a lower limit cylinder at intervals. When the flip control cylinder controls the heat sealing cavity to flip to the side upright position, the upper limit cylinder controls the piston rod to extend and abut against the bottom surface of the intermediate connecting plate. When the flip control cylinder controls the heat sealing cavity to flip to the horizontal position, the lower limit cylinder controls the piston rod to extend and abut against the upper end surface of the intermediate connecting plate. The heat sealing cavity is provided with multiple heat sealing claw cylinders at intervals. Each heat sealing claw cylinder controls the movement of two clamping arms. Each clamping arm is provided with a heat sealing plate. The clamping surface of the heat sealing plate is serrated.

10. The liquid injection packaging equipment for soft-pack lithium battery cells according to claim 1, characterized in that, The stationary mechanism includes a stationary cavity and a stationary control cylinder mounting plate. The stationary cavity is movably connected to the stationary control cylinder mounting plate through multiple stationary lifting guide rods and guide sleeves. A stationary lifting control cylinder is provided in the middle of the stationary control cylinder mounting plate. The piston rod of the stationary lifting control cylinder is connected to the guide rod connecting frame, and the guide rod connecting frame is connected to the stationary lifting guide rod. The static chamber is equipped with a axial vacuum pipe and a drying gas pipe. During static operation, the static lifting control cylinder controls the static chamber to descend and cover the clamp. The axial vacuum pipe and the drying gas pipe alternately evacuate and break the vacuum in the static chamber.

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