Cylindrical battery liquid injection machine

Abstract

The invention discloses a liquid injection machine for a cylindrical battery. The liquid injection machine comprises a feeding logistics line, a feeding and discharging manipulator assembly, a jig return line, a nail sealing assembly, a wiping assembly and a discharging line assembly which are arranged in sequence. A material disc transplanting line is arranged below the feeding and discharging mechanical arm assembly, and liquid injection mechanisms are arranged at the two ends of the material disc transplanting line. The code scanning and weighing assemblies are arranged on the two sides of the material disc transplanting line, and the liquid conveying assembly is placed on one side of the liquid injection mechanism. The lithium battery secondary liquid injection equipment has the beneficial effects that an annular guide rail structure of traditional lithium battery secondary liquid injection equipment is changed into a linear structure, all liquid injection stations are arranged on the central axis of the feeding and discharging mechanical arm assembly, and a plurality of maintenance channels are arranged, so that the maintenance convenience is greatly improved. Meanwhile, the liquid injection function is integrated in a compact mechanism, the overall size of the equipment is compressed, the space utilization rate is increased, the production requirements of novel cylindrical lithium batteries are met, and large-scale use of enterprises is facilitated.

Description

Technical Field

[0001] The invention relates to the field of battery liquid injection, in particular to a cylindrical battery liquid injection machine. Background Art

[0002] Lithium battery injection equipment is a key device for injecting electrolyte into lithium batteries, but traditional injection equipment is usually designed as a ring guide structure, which results in many defects. First, the ring guide design leads to a complex equipment structure, which increases the difficulty of manufacturing and assembly, and also makes maintenance and overhaul inconvenient, thus affecting production efficiency. Secondly, the internal layout of the equipment is loose, the work process is not compact, and the operation is cumbersome, which not only reduces production efficiency, but also makes the equipment bulky, occupies a large amount of factory space, and weakens space utilization. In addition, traditional injection equipment is not versatile and it is difficult to meet the production needs of new cylindrical lithium batteries of different sizes, further affecting overall production efficiency. Summary of the invention

[0003] 1. Problems to be solved

[0004] The technical problem to be solved by the present invention is to provide a cylindrical battery liquid filling machine in view of the current status of the prior art.

[0005] (II) Technical solution

[0006] The present invention is achieved through the following technical solutions:

[0007] A cylindrical battery liquid injection machine includes a loading logistics line, a loading and unloading manipulator assembly, a fixture return line, a sealing nail assembly, a wiping assembly and a discharge line assembly arranged in sequence. A tray transfer line is arranged below the loading and unloading manipulator assembly, and liquid injection mechanisms are arranged at both ends of the tray transfer line. Code scanning and weighing assemblies are arranged on both sides of the tray transfer line, and an infusion assembly is placed on one side of the liquid injection mechanism.

[0008] Furthermore, the loading logistics line includes a tray carrier mechanism and two groups of loading racks, and a roller conveyor assembly is provided on the feeding side of the loading rack, and the discharge side of the roller conveyor assembly is installed and connected to the tray carrier mechanism. The roller conveyor assembly includes a rubber-coated roller and a chain belt drive device 1 for driving the rubber-coated roller to roll. The tray carrier mechanism is arranged and distributed with carrier rollers, and the carrier rollers are connected with a chain belt drive device 2. A tray pulling and towing mechanism is arranged below the carrier roller, and a lifting member for lifting the tray pulling and towing mechanism is installed below the tray pulling and towing mechanism. The tray pulling and towing mechanism is used to receive the tray on the roller conveyor assembly to the top of the carrier roller. A battery cell discharge area is provided in the middle of the tray carrier mechanism, and a barcode scanning gun for tracing product production information is installed in the battery cell discharge area.

[0009] Furthermore, the loading and unloading robot assembly includes a material transport robot bracket and a transfer robot support. A material transport guide rail is installed on the material transport robot bracket, and two groups of material transport robots are slidably connected to the material transport guide rail. The material transport robot is used to receive and grab the battery cells on the feeding side and transport them to the discharge line assembly on the discharge side. The material transport sliding plate of the material transport robot is slidably installed on the material transport guide rail, and the material transport sliding plate is connected and installed with a drive motor 1 and a mounting crossbeam. The mounting crossbeam is connected and installed with a material transport lifting module, and the material transport lifting module is connected and installed with a drive motor 2, and a material picking claw device is installed on the movable slider 1 of the material transport lifting module. A transverse module is installed on the transfer robot support, and the transverse module is connected with a drive motor 3. A transfer material picking module is installed on the movable slider 2 on the transverse module, and a material picking claw device is installed on the movable slider 3 of the transfer material picking module, and a drive motor 4 is installed on the transfer material picking module.

[0010] Furthermore, the jig reflow line includes a battery jig and a reflow line frame, and an upper jig guide rail mounting frame is fixedly installed on the reflow line frame. The upper jig guide rail mounting frame is installed with an upper jig guide, and the lower jig guide rail mounting frame is installed with a lower jig guide, and multiple battery jigs are slidably installed on the upper jig guide rail and the lower jig guide rail. An upper circulation assembly installed on the reflow line frame is arranged below the upper jig guide rail mounting frame, and a lower circulation assembly is arranged below the lower jig guide rail mounting frame. A first jig lifting module is arranged on the feeding side of the upper jig guide rail mounting frame, and a second jig lifting module is arranged on the discharging side. The upper circulation assembly, the lower circulation assembly, the first jig lifting module and the second jig lifting module are used to drive the battery jig to move back and forth between the upper jig guide rail and the lower jig guide rail. The upper circulation assembly includes a linear module one and a linear module two aligned at both ends, and the lower circulation assembly includes a linear module three and a linear module four aligned at both ends. Linear module 4 and linear module 1 are arranged in a vertical correspondence, and linear module 3 and linear module 2 are arranged in a vertical correspondence. After the battery cell enters the battery cell jig, linear module 1 drives the battery cell jig to move to one end of the linear module and linear module 2 moves the battery cell jig to the second jig lifting module end. The second jig lifting module grabs the battery cell jig and transports it to linear module 3, then linear module 4 moves the battery cell jig to one end of linear module 4, and then linear module 4 moves the battery cell jig to the first jig lifting module end, and finally the first jig lifting module transports the battery cell jig to the feeding side end of linear module 1.

[0011] Furthermore, the tray transplanting line includes a transplanting mounting frame. The upper end of the transplanting mounting frame is provided with a tray translation track, and the lower end is provided with a linear transport module. The linear transport module is provided with a dragging device, and the dragging device is provided with a pull rod cylinder that cooperates with the pull block on the tray. Both ends of the linear transport module are provided with a buffer lifting mechanism for lifting or lowering the tray.

[0012] Furthermore, the liquid injection mechanism includes a liquid injection frame, and the liquid injection mechanism is sequentially arranged from top to bottom with a liquid injection port blocking rod lifting assembly, a liquid injection valve moving assembly, a liquid injection assembly, and a waste liquid collection assembly.

[0013] Furthermore, the barcode scanning and weighing assembly includes a weighing platform, a battery cell feeding rack, and a barcode scanning gun installed on the barcode scanning gun driving module, and the feeding rack is slidably installed with a battery cell taking and replacing device.

[0014] Furthermore, the nail sealing assembly includes a nail sealing grabbing module and a nail sealing storage platform. The nail sealing grabbing module includes a nail sealing gripper mounting frame, on which a translation module is mounted, and a nail grabbing lifting module is slidably mounted on the translation module, and a nail grabbing lifting module is mounted on the nail sealing gripper. A nail sealing variable distance module is mounted on the discharge side of the nail sealing storage platform, and a shooting positioning mechanism is arranged on the top.

[0015] Furthermore, the wiping assembly includes a wiping hand mechanism and a cloth-loading mechanism, and the wiping hand mechanism includes a wiping jaw and a wiping jaw translation module. The infusion assembly includes an electrolyte main tank, an electrolyte auxiliary tank, a waste liquid tank, a connecting pipe, and an inlet and outlet liquid pipeline.

[0016] Further, the discharging line assembly comprises a discharging line, and the discharging line is provided with a horizontal wheel bending structure and a discharging belt motor for providing power. The discharging line assembly is used to drive the discharging tray to move to the next station along the discharging line track.

[0017] (III) Beneficial effects

[0018] 1. The present invention changes the annular guide rail structure of the traditional lithium battery secondary injection equipment into a linear structure. All injection stations are arranged on the central axis of the loading and unloading manipulator assembly, and multiple maintenance channels are set up, which greatly improves the convenience of maintenance. At the same time, the injection function is integrated into a compact mechanism, the overall volume of the equipment is compressed, and the space utilization rate is improved to meet the production needs of new cylindrical lithium batteries, which is conducive to the large-scale promotion and application of enterprises.

[0019] 2. During the injection process, one action can add liquid to 18 batteries at the same time. Every 18 cups are integrated on a cup adapter plate. When changing the model, you only need to install the cups and adapter plate offline and install them under the injection base plate to quickly and easily change the model. A single injection mechanism can process up to 324 batteries per injection. It not only has high injection efficiency, but also simplifies maintenance operations, greatly improving the stability and reliability of the equipment. In addition, after injection, the gas circuit system is connected through a vacuum tube, which can adjust the internal pressure of the battery and discharge residual electrolyte, so as to achieve the effect of waste liquid cleaning and full infiltration of electrolyte into the battery cell, further improving the quality of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 is a top view of the cylindrical battery liquid filling machine of the present invention;

[0022] Figure 2 is a front view of the cylindrical battery liquid filling machine of the present invention;

[0023] Figure 3 is a three-dimensional diagram of the cylindrical battery liquid filling machine of the present invention;

[0024] Figure 4 It is a three-dimensional diagram of the material loading flow line in the cylindrical battery liquid filling machine of the present invention;

[0025] Figure 5 It is a three-dimensional diagram of the loading and unloading manipulator assembly in the cylindrical battery liquid filling machine of the present invention;

[0026] Figure 6 It is a three-dimensional diagram of the jig return line in the cylindrical battery filling machine of the present invention;

[0027] Figure 7 It is a stereoscopic diagram of the material tray transplanting line in the cylindrical battery liquid filling machine of the present invention;

[0028] Figure 8 It is a three-dimensional diagram of the liquid injection mechanism in the cylindrical battery liquid injection machine of the present invention;

[0029] Fig. 9 It is a stereoscopic diagram of the code scanning and weighing assembly in the cylindrical battery filling machine of the present invention;

[0030] Fig.10 It is a three-dimensional diagram of the sealing nail assembly in the cylindrical battery liquid filling machine of the present invention;

[0031] Fig.11 It is a three-dimensional diagram of the wiping assembly in the cylindrical battery filling machine of the present invention;

[0032] Fig.12 It is a three-dimensional diagram of the infusion assembly in the cylindrical battery filling machine of the present invention;

[0033] Fig.13 It is a stereoscopic diagram of the discharge line assembly in the cylindrical battery liquid injection machine of the present invention.

[0034] The reference numerals are as follows:

[0035] 1. Loading logistics line; 2. Loading and unloading manipulator assembly; 3. Fixture return line; 4. Tray transfer line; 5. Liquid injection mechanism; 6. Scanning and weighing assembly; 7. Nail sealing assembly; 8. Wiping assembly; 9. Infusion assembly; 10. Discharging line assembly; 100. Tray transport mechanism; 101. Loading rack; 102. Roller transmission assembly; 103. Rubber-coated roller; 104. Chain drive device 1; 105. Carrying roller; 106. Chain drive device 2; 107. Tray pulling mechanism; 108. Lifting piece; 109. Cell discharging area; 110. Scanning gun; 200. Transport manipulator bracket; 201. Transfer manipulator support; 202. Transport guide rail; 203, material transport manipulator; 204, material transport sliding plate; 205, drive motor 1; 206, installation crossbeam; 207, material transport lifting module; 208, drive motor 2; 209, mover slider 1; 210, material picking claw device; 211, transverse movement module; 212, drive motor 3; 213, mover slider 2; 214, transfer and material picking module; 215, mover slider 3; 216, drive motor 4; 300, battery cell fixture; 301, return line rack; 302, upper fixture guide rail mounting frame; 303, upper fixture guide rail; 304, lower fixture guide rail mounting frame; 305, lower fixture guide rail; 306, upper circulation component; 307, lower circulation component ;308, first fixture lifting module; 309, second fixture lifting module; 310, linear module one; 311, linear module two; 312, linear module three; 313, linear module four; 400, transplanting mounting frame; 401, tray translation track; 402, linear transport module; 403, dragging device; 405, pull rod cylinder; 406, buffer lifting mechanism; 500, liquid injection rack; 501, liquid injection port plugging rod lifting assembly; 502, liquid injection valve moving assembly; 503, liquid injection assembly; 504, waste liquid collection assembly; 600, weighing table; 601, battery cell feeding rack; 602, barcode scanning gun drive module; 603, battery cell material removal and replacement device ;700, sealing nail grabbing module;701, sealing nail storage table;702, sealing nail gripper mounting frame;703, translation module;704, gripper lifting module;705, sealing nail gripper;706, sealing nail variable distance module;707, shooting and positioning mechanism;800, wiping hand mechanism;801, cloth loading mechanism;802, wiping jaw;803, wiping jaw translation module;900, electrolyte main tank;901, electrolyte sub-tank;902, waste liquid tank;903, connecting pipe;904, liquid inlet and outlet pipelines;1000, discharging line;1001, horizontal wheel bending structure;1002, discharging belt motor;1003, discharging line track;1004, discharging tray. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present application, it should be understood that the terms "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] See also Figure 1-Figure 13The present invention provides a technical solution: it includes a loading logistics line 1, a loading and unloading manipulator assembly 2, a fixture return line 3, a sealing nail assembly 7, a wiping assembly 8 and a discharging line assembly 10 which are arranged in sequence. A tray transfer line 4 is arranged below the loading and unloading manipulator assembly 2, and a liquid injection mechanism 5 is arranged at both ends of the tray transfer line 4. The barcode scanning and weighing assemblies 6 are arranged on both sides of the tray transfer line 4, and an infusion assembly 9 is placed on one side of the liquid injection mechanism 5. Specifically, the battery-carrying clip is fed in by the loading logistics line 1. After reaching the loading position, the lifting cylinder drives the pin on the lifting plate to insert the clip for positioning. The material taking claw device 210 of the loading and unloading manipulator assembly 2 descends and picks up a row of 18 batteries at one time and moves to the front weighing and scanning position, and then puts the battery into the sensor fixture cup of the weighing and scanning assembly. If there is a hole in the clip, the material taking claw device 210 moves to the corresponding position of the battery cell taking and changing device 603 to take the battery to replenish the hole. Next, the weighing sensor detects the weight of the battery after one injection, and the barcode scanner 110 scans the barcode at the same time, and the PLC control system binds the battery QR code and the battery weight data. After the weighing is completed, the material picking claw device 210 descends again to clamp the weighed battery and move it to the loading position of the tray transfer line 4, puts the battery cell into the battery tray, and the loading and unloading manipulator assembly 2 returns to the loading position of the loading logistics line 1; the loading and unloading manipulator assembly 2 repeats this action 18 times in total. After the tray is full of batteries, the dragging device 403 of the tray transfer line 4 drags the full tray to the injection position at both ends, and the buffer lifting mechanism 406 lifts the tray top and presses it into the sleeve cup of the injection mechanism 5. The lifting electric cylinder of the injection mechanism 5 drives the injection port blocking rod to descend to block the injection port, and at the same time starts to evacuate, and maintains the pressure for 3 seconds after reaching the vacuum pressure. After the pressure holding time is reached, the pressure sensor detects the vacuum pressure inside the injection cup and the battery. If the pressure range is within the process requirements, the center blocking rod lifting cylinder drives the lifting plate to lift 18 rows of a total of 324 center blocking rods, and the electrolyte flows into the battery from all sides of the center blocking rod; at the same time, nitrogen is filled into the liquid filling cup, and the nitrogen filling and vacuuming actions are performed alternately to ensure that the electrolyte in the liquid filling can completely enter the battery. After the liquid filling is completed, the buffer lifting mechanism 406 drives the material tray to descend, and the fixture transfer assembly drags the material tray back to the transfer upper position. The material picking claw device 210 descends to clamp a row of 18 batteries and move them to the rear weighing and scanning position, and the battery is placed in the fixture cup of the unloading weighing sensor. The weighing sensor detects the weight of the battery after liquid filling, and the barcode scanner 110 scans the barcode at the same time. Next, the PLC control system binds the battery QR code and the battery weight data, and subtracts the weight data before injection from the weight data after injection to obtain the actual injection volume data. The PLC control system will automatically determine whether the battery injection volume is OK or NG; if NG, the transfer robot on the loading and unloading robot assembly 2 will automatically pick out the NG battery and put it into the NG material tray; if OK, the material picking claw device 210 descends to clamp the battery and move it to the upper material position of the fixture return line 3, and put the battery into the battery cell fixture 300. The loading and unloading robot assembly 2 repeats this action 18 times in total.In the jig reflow line 3, the front drag module drags the battery jig 300 to the transition position, and the rear drag module drags the jig from the transition position to the helium return position. The Z-axis module of the helium return assembly lowers the suction nozzle to press the battery injection hole, first vacuuming and then injecting helium. After the helium return is completed, the rear drag module drags the jig to the sealing position. The sealing nail assembly 7 presses the sealing nail into the battery injection hole. After the sealing is completed, the rear drag module drags the jig to the sealing detection position. The sealing detection sensor moves to the top of each battery to detect the height of the sealing nail. If the height of the sealing nail is too high, it is judged as sealing NG. The sealing claw descends to pick up the NG battery and put it into the NG material tray. If the height of the sealing nail is within the set range, it is judged as OK. After the sealing detection is completed, the rear drag module drags the jig to the unloading position of the jig reflow line 3. The gripper of the cup unloading robot descends to clamp a row of batteries and move them to the upper position of the cup line, and puts the batteries into the empty cup. The battery flows to the wiping position on the cup line, and the wiping clamp 802 clamps the wiping cloth and descends to the battery filling port to rotate and wipe the residual electrolyte. After wiping is completed, the battery flows out of the filling machine.

[0039] Specifically, the loading logistics line 1 includes a tray carrier mechanism 100 and two sets of loading racks 101. The feeding side of the loading rack 101 is provided with a roller conveyor assembly 102, and the discharging side of the roller conveyor assembly 102 is installed and connected to the tray carrier mechanism 100. The roller conveyor assembly 102 includes a rubber-coated roller 103 and a chain belt driving device 104 for driving the rubber-coated roller 103 to roll. The tray carrier mechanism 100 is arranged with carrier rollers 105, and the carrier rollers 105 are connected with a chain belt driving device 2 106. A tray pulling mechanism 107 is arranged below the carrier roller 105, and a lifting member 108 for lifting the tray pulling mechanism 107 is installed below the tray pulling mechanism 107. The tray pulling mechanism 107 is used to receive the tray on the roller conveyor assembly 102 to the top of the carrier roller 105. A battery cell discharging area 109 is provided in the middle of the tray transport mechanism 100 , and a barcode scanning gun 110 for tracing product production information is installed in the battery cell discharging area 109 .

[0040] Specifically, the loading and unloading manipulator assembly 2 includes a material transport manipulator bracket 200 and a transfer manipulator support 201. A material transport rail 202 is installed on the material transport manipulator bracket 200, and two groups of material transport manipulators 203 are slidably connected to the material transport rail 202. The material transport manipulator 203 is used to receive and grab the battery cells on the feeding side and transport them to the discharge line assembly 10 on the discharge side. The material transport sliding plate 204 of the material transport manipulator 203 is slidably installed on the material transport rail 202, and the material transport sliding plate 204 is connected and installed with a drive motor 1 205 and a mounting crossbeam 206. The mounting crossbeam 206 is connected and installed with a material transport lifting module 207, and the material transport lifting module 207 is connected and installed with a drive motor 2 208, and the material picking claw device 210 is installed on the movable slider 1 209 of the material transport lifting module 207. A lateral movement module 211 is installed on the transfer manipulator support 201, and the lateral movement module 211 is connected to a drive motor 3 212. A transfer material taking module 214 is installed on a movable slider 213 on the lateral movement module 211, and a material taking clamping device 210 is installed on a movable slider 3 215 of the transfer material taking module 214, and a drive motor 4 216 is installed on the transfer material taking module 214.

[0041] Specifically, the jig return line 3 includes a cell jig 300 and a return line rack 301, and an upper jig guide rail mounting frame 302 is fixedly mounted on the return line rack 301. The upper jig guide rail mounting frame 302 is mounted with an upper jig guide rail 303, and the lower jig guide rail mounting frame 304 is mounted with a lower jig guide rail 305. A plurality of cell jigs 300 are slidably mounted on the upper jig guide rail 303 and the lower jig guide rail 305. An upper circulation assembly 306 mounted on the return line rack 301 is arranged below the upper jig guide rail mounting frame 302, and a lower circulation assembly 307 is arranged below the lower jig guide rail mounting frame 304. A first jig lifting module 308 is arranged on the feeding side of the upper jig guide rail mounting frame 302, and a second jig lifting module 309 is arranged on the discharging side. The upper circulation assembly 306, the lower circulation assembly 307, the first fixture lifting module 308 and the second fixture lifting module 309 are used to drive the battery fixture 300 to move back and forth between the upper fixture guide rail 303 and the lower fixture guide rail 305. The upper circulation assembly 306 includes a linear module 1 310 and a linear module 2 311 aligned at both ends, and the lower circulation assembly 307 includes a linear module 3 312 and a linear module 4 313 aligned at both ends. The linear module 4 313 and the linear module 1 310 are arranged in a corresponding manner up and down, and the linear module 3 312 and the linear module 2 311 are arranged in a corresponding manner up and down. After the battery cell enters the battery cell fixture 300, the linear module 1 310 drives the battery cell fixture 300 to move to the end of the linear module 1 310 and the linear module 2 311 moves the battery cell fixture 300 to the end of the second fixture lifting module 309. The second jig lifting module 309 grabs the battery jig 300 and transports it to the linear module three 312, and then the linear module four 313 moves the battery jig 300 to one end of the linear module four 313, and then the linear module four 313 moves the battery jig 300 to the end of the first jig lifting module 308, and finally the first jig lifting module 308 transports the battery jig 300 to the feeding side end of the linear module one 310. At one end of the jig return line 3 close to the discharge side, there are sequentially arranged a material taking position, a helium return position, a glue nail position, a glue nail detection position, and a material unloading position. The battery after liquid injection is pulled to the helium return position by the linear module one 310 and the linear module two 311, and helium is injected into the battery, and then the battery filling port is sealed at the glue nail position; when passing through the glue nail detection position, it can be detected whether the effect of the glue nail sealing installation is in place.

[0042] Specifically, the tray transplanting line 4 includes a transplanting mounting frame 400. A tray translation track 401 is provided at the upper end of the transplanting mounting frame 400, and a linear transport module 402 is provided at the lower end. The linear transport module 402 is installed with a dragging device 403, and the dragging device 403 is provided with a pull rod cylinder 405 that cooperates with the pull block on the tray. Buffer lifting mechanisms 406 for lifting or moving the tray downward are provided at both ends of the linear transport module 402.

[0043] Specifically, the liquid injection mechanism 5 includes a liquid injection frame 500, and the liquid injection mechanism 5 is sequentially arranged from top to bottom with a liquid injection port plugging rod lifting assembly 501, a liquid injection valve moving assembly 502, a liquid injection assembly 503, and a waste liquid collection assembly 504. During operation, the lifting cylinder in the liquid injection assembly 503 drives the plugging rod lifting plate to drive the central plugging rod to rise, and the electrolyte automatically flows into the battery from the gap between the central plugging rod and the liquid injection cup, and then 0.5MPa nitrogen is filled, and vacuum is drawn after a certain period of time. Nitrogen filling and vacuum drawing are performed alternately, and the vacuum is broken after a certain period of time, and the fixture transfer lifting mechanism descends to drive the fixture to descend, and the fixture transfer assembly drag module drags the fixture to evacuate the liquid injection position of the liquid injection mechanism 5. The servo motor drives the synchronous wheel and the synchronous belt to move the waste liquid collection box to the first waste liquid collection position, and nitrogen is filled to clean the inner wall of the injection cup. After the inner wall of the injection cup is cleaned, the lifting cylinder in the injection assembly 503 drives the plugging rod lifting plate to drive the central plugging rod to descend, and nitrogen is filled to clean the inner hole of the central plugging rod. After the inner hole of the central plugging rod is cleaned, the entire cylindrical lithium battery injection action is completed. The mechanism can replace the corresponding set of cups according to the product size. Every 18 sets of cups are integrated on a set of cup adapter plate. When changing the model, you only need to install the set of cups and the set of cup adapter plate offline and then install them together under the injection base plate, so as to achieve rapid changeover. The mechanism can inject up to 324 batteries at a single station, with high injection efficiency. It is suitable for a wide range of product sizes, fast product changeover speed, high injection accuracy and injection efficiency.

[0044] Specifically, the barcode scanning and weighing assembly 6 includes a weighing platform 600, a battery cell feeding rack 601, and a barcode scanning gun 110 installed on a barcode scanning gun 110 driving module, and the feeding rack is slidably mounted with a battery cell taking and changing device 603. The barcode scanning and weighing assembly 6 is used to take and change materials and obtain battery filling amount information.

[0045] Specifically, the nail sealing assembly 7 includes a nail sealing grabbing module 700 and a nail sealing storage platform 701. The nail sealing grabbing module 700 includes a nail sealing gripper 705 mounting frame 702, on which a translation module 703 is mounted, and a nail grabbing lifting module 704 is slidably mounted on the translation module 703, and the nail grabbing lifting module 704 is mounted on the nail sealing gripper 705. A nail sealing variable distance module 706 is mounted on the discharge side of the nail sealing storage platform 701, and a shooting positioning mechanism 707 is arranged on the top.

[0046] Specifically, the wiping assembly 8 includes a wiping hand mechanism 800 and a cloth loading mechanism 801, and the wiping hand mechanism 800 includes a wiping jaw 802 and a wiping jaw translation module 803. The infusion assembly 9 includes an electrolyte main tank 900, an electrolyte auxiliary tank 901, a waste liquid tank 902, a connecting pipe 903, and an inlet and outlet pipeline 904. The inlet and outlet pipeline 904 is connected to the injection mechanism to provide electrolyte raw materials for the electrolyte valve.

[0047] Specifically, the discharge line assembly 10 includes a discharge line 1000, which is provided with a horizontal wheel bending structure 1001 and a discharge belt motor 1002 for providing power. The discharge line assembly 10 is used to drive the discharge tray 1004 to move to the next station along the discharge line track 1003.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cylindrical battery filling machine, characterized in that: It includes a loading logistics line, a loading and unloading manipulator assembly, a fixture return line, a nail sealing assembly, a wiping assembly and a discharging line assembly which are arranged in sequence; a tray transplanting line is arranged below the loading and unloading manipulator assembly, and liquid injection mechanisms are arranged at both ends of the tray transplanting line; code scanning and weighing assemblies are arranged on both sides of the tray transplanting line, and an infusion assembly is placed on one side of the liquid injection mechanism.

2. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The loading logistics line includes a tray carrying mechanism and two groups of loading racks, the feeding side of the loading rack is provided with a roller conveying assembly, and the discharging side of the roller conveying assembly is installed and connected to the tray carrying mechanism; the roller conveying assembly includes a rubber-coated roller and a chain belt driving device 1 for driving the rubber-coated roller to roll; the tray carrying mechanism is arranged with carrying rollers, and the carrying rollers are connected with a chain belt driving device 2; a tray pulling mechanism is arranged under the carrying roller, and a lifting part for lifting the tray pulling mechanism is installed under the tray pulling mechanism; the tray pulling mechanism is used to receive the tray on the roller conveying assembly to the top of the carrying roller; a battery cell discharging area is provided in the middle of the tray carrying mechanism, and a barcode scanning gun for tracing product production information is installed in the battery cell discharging area.

3. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The loading and unloading robot assembly comprises a transport robot bracket and a transfer robot support; a transport guide rail is installed on the transport robot bracket, and two groups of transport robots are slidably connected to the transport guide rail, and the transport robot is used to receive and grab the battery cells on the feeding side and transport them to the discharge line assembly on the discharge side; the transport sliding plate of the transport robot is slidably installed on the transport guide rail, and the transport sliding plate is connected and installed with a drive motor 1 and a mounting crossbeam; the mounting crossbeam is connected and installed with a transport lifting module, the transport lifting module is connected and installed with a drive motor 2, and a material picking claw device is installed on the movable slider 1 of the transport lifting module; a transverse module is installed on the transfer robot support, and the transverse module is connected with a drive motor 3; a transfer material picking module is installed on the movable slider 2 on the transverse module, and a material picking claw device is installed on the movable slider 3 of the transfer material picking module, and a drive motor 4 is installed on the transfer material picking module.

4. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The jig return line comprises a cell jig and a return line rack, an upper jig guide rail mounting frame is fixedly mounted on the return line rack; the upper jig guide rail mounting frame is mounted with an upper jig guide rail, the lower jig guide rail mounting frame is mounted with a lower jig guide rail, and a plurality of cell jigs are slidably mounted on the upper jig guide rail and the lower jig guide rail; an upper circulation assembly mounted on the return line rack is arranged below the upper jig guide rail mounting frame, and a lower circulation assembly is arranged below the lower jig guide rail mounting frame; a first jig lifting module is arranged on the feeding side of the upper jig guide rail mounting frame, and a second jig lifting module is arranged on the discharging side; The upper circulation component, the lower circulation component, the first fixture lifting module and the second fixture lifting module are used to drive the battery fixture to move back and forth between the upper fixture guide rail and the lower fixture guide rail; the upper circulation component includes a linear module 1 and a linear module 2 aligned at both ends, and the lower circulation component includes a linear module 3 and a linear module 4 aligned at both ends; the linear module 4 is arranged in correspondence with the linear module 1 in the upper and lower directions, and the linear module 3 is arranged in correspondence with the linear module 2 in the upper and lower directions; after the battery cell enters the battery cell fixture, the linear module Line module one drives the battery cell jig to move to one end of the linear module and the linear module two moves the battery cell jig to the end of the second jig lifting module; then the second jig lifting module grabs the battery cell jig and transports it to the linear module three, the linear module four moves the battery cell jig to one end of the linear module four, and then the linear module four moves the battery cell jig to the end of the first jig lifting module, and finally the first jig lifting module transports the battery cell jig to the feeding side end of the linear module one.

5. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The tray transplanting line includes a transplanting mounting frame; a tray translation track is provided at the upper end of the transplanting mounting frame, and a linear transport module is provided at the lower end; a dragging device is installed on the linear transport module, and the dragging device is provided with a pull rod cylinder that cooperates with the pulling block on the tray; buffer lifting mechanisms for lifting or moving the tray downward are provided at both ends of the linear transport module.

6. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The liquid injection mechanism comprises a liquid injection frame, and the liquid injection mechanism is sequentially arranged from top to bottom with a liquid injection port blocking rod lifting assembly, a liquid injection valve moving assembly, a liquid injection assembly, and a waste liquid collecting assembly.

7. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The barcode scanning and weighing assembly includes a weighing platform, a battery cell feeding rack, and a barcode scanning gun installed on a barcode scanning gun driving module, and the battery cell taking and replacing device is slidably installed on the feeding rack.

8. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The sealing nail assembly includes a sealing nail grabbing module and a sealing nail storage platform; the sealing nail grabbing module includes a sealing nail gripper mounting frame, a translation module is installed on the sealing nail gripper mounting frame, a nail grabbing lifting module is slidably installed on the translation module, and the nail grabbing lifting module is installed on the sealing nail gripper; a sealing nail variable distance module is installed on the discharge side of the sealing nail storage platform, and a shooting positioning mechanism is arranged on the top.

9. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The wiping assembly includes a wiping hand mechanism and a cloth-loading mechanism, and the wiping hand mechanism includes a wiping claw and a wiping claw translation module; the infusion assembly includes an electrolyte main tank, an electrolyte auxiliary tank, a waste liquid tank, a connecting pipe and an inlet and outlet liquid pipeline.

10. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The discharging line assembly comprises a discharging line, and the discharging line is provided with a horizontal wheel bending structure and a discharging belt motor for providing power; the discharging line assembly is used to drive the discharging tray to move to the next workstation along the discharging line track.

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