Liquid injection machine for cylindrical battery

Abstract

The application discloses a cylindrical battery liquid injection machine, which comprises a feeding logistics line, a feeding and discharging mechanical arm assembly, a jig backflow line, a sealing nail assembly, a wiping assembly and a discharging line assembly arranged in sequence. A tray transplanting line is arranged below the feeding and discharging mechanical arm assembly, and a liquid injection mechanism is arranged at both ends of the tray transplanting line. A code scanning and weighing assembly is arranged on both sides of the tray transplantating line, and a liquid feeding assembly is arranged on one side of the liquid injection mechanism. The application has the beneficial effects that the annular guide rail structure of the 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 multiple maintenance channels are arranged, so that the convenience of maintenance is greatly improved. Meanwhile, the liquid injection function is integrated in a compact mechanism, the overall volume of the equipment is compressed, the space utilization is improved, the production demand of new cylindrical lithium batteries is met, and the large-scale use of enterprises is facilitated.

Description

Technical Field

[0001] This invention relates to the field of battery electrolyte filling, and more particularly to a cylindrical battery electrolyte filling machine. Background Technology

[0002] Lithium-ion battery electrolyte filling equipment is a crucial component for injecting electrolyte into lithium-ion batteries. However, traditional filling equipment is typically designed with a ring-shaped guide rail structure, which introduces several drawbacks. First, the ring-shaped guide rail design leads to a complex equipment structure, increasing the difficulty of manufacturing and assembly, and also making maintenance and repair inconvenient, thus affecting production efficiency. Second, the loose internal layout and disorganized workflow result in cumbersome operation, reducing production efficiency and making the equipment bulky, occupying a significant amount of factory space and diminishing space utilization. Furthermore, traditional filling equipment lacks versatility and struggles to meet the production needs of new cylindrical lithium-ion batteries of different sizes, further impacting overall production efficiency. Summary of the Invention

[0003] (I) Problems to be solved

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

[0005] (II) Technical Solution

[0006] This invention is achieved through the following technical solution:

[0007] A cylindrical battery electrolyte filling machine includes a feeding material line, a loading / unloading robot assembly, a fixture return line, a sealing assembly, a wiping assembly, and a discharge line assembly arranged sequentially. A tray transfer line is located below the loading / unloading robot assembly, with electrolyte filling mechanisms installed at both ends of the tray transfer line. Barcode scanning and weighing components are arranged on both sides of the tray transfer line, and an electrolyte delivery assembly is placed on one side of the electrolyte filling mechanism.

[0008] Furthermore, the material handling line includes a tray conveying mechanism and two sets of feeding racks. A roller conveyor assembly is installed on the infeed side of the feeding racks, and the discharge side of the roller conveyor assembly is connected to the tray conveying mechanism. The roller conveyor assembly includes a rubber-coated roller and a chain drive device for driving the rubber-coated roller. The tray conveying mechanism has conveyor rollers arranged in a row, and the conveyor rollers are connected to a chain drive device. A tray pulling mechanism is installed below the conveyor rollers, and a lifting component is installed below the tray pulling mechanism to lift it. The tray pulling mechanism receives the trays from the roller conveyor assembly and moves them above the conveyor rollers. A battery cell discharge area is located in the middle of the tray conveying mechanism, and a barcode scanner for tracing product production information is installed in the battery cell discharge area.

[0009] Furthermore, the loading / unloading robot assembly includes a material handling robot support and a transfer robot support column. A material handling guide rail is mounted on the material handling robot support, and two sets of material handling robots are slidably connected to the guide rail. These robots receive and grasp the battery cells from the infeed side and transport them to the discharge line assembly on the discharge side. The material handling robot's material handling slide plate is slidably mounted on the guide rail, and a drive motor and a mounting beam are connected to the slide plate. A material handling lifting module is connected to the mounting beam, and a drive motor is connected to the lifting module. A gripper device is mounted on the moving slider of the lifting module. A transverse module is mounted on the transfer robot support column, and a drive motor is connected to the transverse module. A transfer picking module is mounted on the moving slider of the transverse module, and a gripper device is mounted on the moving slider of the transfer picking module. A drive motor is mounted on the transfer picking module.

[0010] Furthermore, the jig return line includes cell jigs and a return line frame, with an upper jig guide rail mounting bracket fixedly installed on the return line frame. The upper jig guide rail mounting bracket has an upper jig guide rail installed, and the lower jig guide rail mounting bracket has a lower jig guide rail installed. Multiple cell jigs are slidably mounted on the upper and lower jig guide rails. An upper circulation assembly mounted on the return line frame is located below the upper jig guide rail mounting bracket, and a lower circulation assembly is located below the lower jig guide rail mounting bracket. A first jig lifting module is located on the feed side of the upper jig guide rail mounting bracket, and a second jig lifting module is located on the discharge side. The upper circulation assembly, lower circulation assembly, first jig lifting module, and second jig lifting module are used to drive the cell jigs to reciprocate between the upper and lower jig guide rails. The upper circulation assembly includes two linear modules aligned at both ends: linear module one and linear module two. The lower circulation assembly includes two linear modules aligned at both ends: linear module three and linear module four. Linear module four is arranged vertically opposite to linear module one, and linear module three is arranged vertically opposite to linear module two. After the battery cell enters the battery cell fixture, linear module one drives the battery cell fixture to one end of the linear module, and then linear module two moves the battery cell fixture to the end of the second fixture lifting module. The second fixture lifting module grabs the battery cell fixture and transports it to linear module three. Then, linear module four moves the battery cell fixture to one end of linear module four, and then linear module four moves the battery cell fixture to the end of the first fixture lifting module. Finally, the first fixture lifting module transports the battery cell fixture to the feeding side of linear module one.

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

[0012] Furthermore, the injection mechanism includes an injection frame, and from top to bottom, the injection mechanism is equipped with an injection port plug lifting assembly, an injection valve moving assembly, an injection assembly, and a waste liquid collection assembly.

[0013] Furthermore, the barcode weighing component includes a weighing platform, a battery cell replenishment rack, and a barcode scanner mounted on the barcode scanner drive module. The replenishment rack is slidably equipped with a battery cell picking and replacing device.

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

[0015] Furthermore, the wiping assembly includes a wiping hand mechanism and a cloth feeding mechanism, the wiping hand mechanism including a wiping gripper and a wiping gripper translation module. The infusion assembly includes a main electrolyte tank, a secondary electrolyte tank, a waste liquid tank, a connecting pipe, and inlet and outlet pipes.

[0016] Furthermore, the discharge line assembly includes a discharge line with a horizontal wheel bend structure and a discharge belt motor for providing power. The discharge line assembly is used to drive the discharge tray to move along the discharge line track to the next station.

[0017] (III) Beneficial Effects

[0018] 1. This invention replaces the traditional annular guide rail structure of lithium battery secondary electrolyte filling equipment with a linear structure. All electrolyte filling stations are arranged on the central axis of the loading and unloading robotic arm assembly, and multiple maintenance channels are provided, greatly improving the convenience of maintenance. Simultaneously, by integrating the electrolyte filling function into a compact mechanism, the overall size of the equipment is reduced, improving space utilization and adapting to the production needs of new cylindrical lithium batteries, which is beneficial for large-scale application by enterprises.

[0019] 2. During the electrolyte filling process, one operation can simultaneously add electrolyte to 18 batteries. Each set of 18 electrolyte cups is integrated onto a single adapter plate. For model changeovers, simply assemble the electrolyte cups and adapter plate offline and install them under the electrolyte filling base plate for a quick and easy changeover. A single electrolyte filling mechanism can process up to 324 batteries per cycle, resulting in high filling efficiency, simplified maintenance, and significantly improved equipment stability and reliability. Furthermore, after electrolyte filling, a vacuum tube connects to the gas path system, allowing for adjustment of the battery's internal pressure and removal of residual electrolyte. This achieves waste liquid cleaning and ensures thorough electrolyte wetting of the battery cells, further improving battery quality. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is a top view of the cylindrical battery liquid injection machine described in this invention;

[0022] Figure 2 This is a front view of the cylindrical battery liquid injection machine described in this invention;

[0023] Figure 3 This is a perspective view of the cylindrical battery liquid injection machine described in this invention;

[0024] Figure 4 This is a perspective view of the material feeding line in the cylindrical battery liquid injection machine described in this invention;

[0025] Figure 5 This is a perspective view of the loading and unloading robot assembly in the cylindrical battery liquid injection machine of the present invention;

[0026] Figure 6 This is a perspective view of the jig return line in the cylindrical battery injection machine described in this invention;

[0027] Figure 7 This is a perspective view of the material tray transfer line in the cylindrical battery liquid injection machine described in this invention;

[0028] Figure 8 This is a perspective view of the liquid injection mechanism in the cylindrical battery liquid injection machine of the present invention;

[0029] Figure 9 This is a perspective view of the barcode scanning and weighing component in the cylindrical battery filling machine of the present invention;

[0030] Figure 10 This is a perspective view of the sealing assembly in the cylindrical battery filling machine of the present invention;

[0031] Figure 11 This is a perspective view of the wiping assembly in the cylindrical battery liquid filling machine of the present invention;

[0032] Figure 12 This is a perspective view of the infusion assembly in the cylindrical battery infusion machine of the present invention;

[0033] Figure 13 This is a perspective view of the discharge line assembly in the cylindrical battery liquid injection machine described in this invention.

[0034] The accompanying reference numerals are as follows:

[0035] 1. Material feeding line; 2. Loading / unloading robot assembly; 3. Fixture return line; 4. Tray transfer line; 5. Liquid injection mechanism; 6. Barcode scanning and weighing assembly; 7. Sealing assembly; 8. Wiping assembly; 9. Infusion assembly; 10. Discharge line assembly; 100. Tray conveying mechanism; 101. Loading rack; 102. Roller conveyor assembly; 103. Rubber-coated roller; 104. Chain drive device one; 105. Transport roller; 106. Chain drive device two; 107. Tray pulling mechanism; 108. Lifting component; 109. Battery cell discharge area; 110. Barcode scanner; 200. Material handling robot support; 201. Transfer robot support column; 202. Material handling guide rail; 203. Material handling robot; 204. Material handling sliding plate; 205. Drive motor one; 206. Mounting beam; 207. Material handling lifting module; 208. Drive motor two; 209. Moving slider one; 210. Material picking gripper device; 211. Horizontal movement module; 212. Drive motor three; 213. Moving slider two; 214. Transfer picking module; 215. Moving slider three; 216. Drive motor four; 300. Battery cell fixture; 301. Return line frame; 302. Upper fixture guide rail mounting bracket; 303. Upper fixture guide rail; 304. Lower fixture guide rail mounting bracket; 305. Lower fixture guide rail; 306. Upper circulation assembly; 307. Lower circulation assembly 308. First jig lifting module; 309. Second jig lifting module; 310. Linear module one; 311. Linear module two; 312. Linear module three; 313. Linear module four; 400. Transplanting and mounting frame; 401. Material tray translation track; 402. Linear transport module; 403. Dragging device; 405. Pull rod cylinder; 406. Buffer lifting mechanism; 500. Liquid injection frame; 501. Liquid injection port plug lifting assembly; 502. Liquid injection valve moving assembly; 503. Liquid injection assembly; 504. Waste liquid collection assembly; 600. Weighing platform; 601. Battery cell replenishment rack; 602. Barcode scanner drive module; 603. Battery cell replacement device 700. Nail gripping module; 701. Nail storage platform; 702. Nail gripper mounting frame; 703. Translation module; 704. Nail gripper lifting module; 705. Nail gripper; 706. Nail variable pitch module; 707. Shooting and positioning mechanism; 800. Wiping hand mechanism; 801. Cloth feeding mechanism; 802. Wiping gripper; 803. Wiping gripper translation module; 900. Electrolyte main tank; 901. Electrolyte auxiliary tank; 902. Waste liquid tank; 903. Connecting pipe; 904. Inlet and outlet liquid pipelines; 1000. Discharge line; 1001. Horizontal wheel bending structure; 1002. Discharge belt motor; 1003. Discharge line track; 1004. Discharge tray. Detailed Implementation

[0036] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] In the description of this application, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Please see Figures 1-13This invention provides a technical solution comprising a feeding logistics line 1, a loading / unloading robot assembly 2, a fixture return line 3, a sealing assembly 7, a wiping assembly 8, and a discharge line assembly 10 arranged sequentially. A tray transfer line 4 is located below the loading / unloading robot assembly 2, with liquid injection mechanisms 5 at both ends. 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, battery-loaded cartridges are fed in by the feeding logistics line 1. Upon reaching the loading position, a lifting cylinder drives a pin on the lifting plate to insert into the cartridge for positioning. The picking gripper device 210 of the loading / unloading robot assembly 2 descends and picks up a row of 18 batteries at once, moving them to the front weighing and scanning position. The batteries are then placed into the sensor fixture cup of the weighing and scanning assembly. If a cavity appears in the cartridge, the picking gripper device 210 moves to the corresponding position of the battery cell replacement device 603 to remove the battery and fill the cavity. Next, the weighing sensor detects the weight of the battery after one injection, and the barcode scanner 110 scans the code simultaneously. The PLC control system binds the battery QR code and battery weight data. After weighing, the material handling gripper 210 descends again to pick up the weighed battery and moves it to the loading position of the material tray transfer line 4, placing the battery cell into the battery tray. The loading / unloading robot assembly 2 returns to the loading position of the loading logistics line 1; the loading / unloading robot assembly 2 repeats this action 18 times in total. After the tray is full of batteries, the dragging device 403 of the material tray transfer line 4 drags the full tray to the injection positions at both ends, and the buffer lifting mechanism 406 lifts the tray and presses it into the cup of the injection mechanism 5. The lifting cylinder of the injection mechanism 5 drives the injection port plug rod to descend and block the injection port, while simultaneously starting to draw a vacuum. After reaching the vacuum pressure, the pressure is maintained for 3 seconds. After the pressure holding time is reached, the pressure sensor detects the vacuum pressure inside the injection cup and the battery. If the pressure is within the process requirements, the central plug lifting cylinder drives the lifting plate to lift 18 rows of 324 central plugs, allowing electrolyte to flow into the battery from around the central plugs. Simultaneously, nitrogen is injected into the injection cup, with alternating nitrogen injection and vacuuming actions to ensure complete electrolyte entry into the battery. After injection, the buffer lifting mechanism 406 lowers the material tray, and the clamping transfer assembly drags the tray back to the transfer loading position. The picking gripper device 210 lowers to pick up a row of 18 batteries and moves them to the rear weighing and scanning position. The batteries are placed into the fixture cup of the unloading weighing sensor, which detects the weight of the batteries after injection, while the barcode scanner 110 scans the codes simultaneously. Next, the PLC control system binds the battery QR code and battery weight data, and subtracts the weight data before liquid injection from the weight data after liquid injection to obtain the actual liquid injection amount. The PLC control system will automatically determine whether the battery liquid injection amount 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 picking gripper device 210 will descend to pick up the battery and move it to the material position on the jig return line 3, and put the battery into the cell jig 300. The loading and unloading robot assembly 2 repeats this action 18 times in total.In fixture return line 3, the front dragging module drags the cell fixture 300 to the transition position, and the rear dragging module drags the fixture from the transition position to the helium return position. The Z-axis module of the helium return assembly lowers the suction nozzle to press against the battery injection hole, first evacuating the vacuum and then injecting helium. After helium return is completed, the rear dragging module drags the fixture to the sealing pin position. The sealing pin assembly 7 presses the sealing pin into the battery injection hole. After sealing is completed, the rear dragging module drags the fixture to the sealing pin detection position. The sealing pin detection sensor moves above each battery to detect the height of the sealing pin. If the sealing pin height is too high, it is judged as a NG (not good) seal, and the sealing pin gripper descends to pick out the NG battery and put it into the NG tray. If the sealing pin height is within the set range, it is judged as OK. After the sealing pin detection is completed, the rear dragging module drags the fixture to the unloading position of fixture return line 3. The cup unloading robot gripper descends to pick up a row of batteries and move them to the unloading position on the cup line, placing the batteries into the empty cup. The battery flows to the wiping position on the cup line. The wiping gripper 802 holds the wiping cloth and descends to the battery filling port to rotate and wipe away the residual electrolyte. After wiping, the battery flows out of the filling machine.

[0039] Specifically, the material loading line 1 includes a tray conveying mechanism 100 and two sets of loading racks 101. A roller conveyor assembly 102 is installed on the infeed side of the loading rack 101, and the discharge side of the roller conveyor assembly 102 is connected to the tray conveying mechanism 100. The roller conveyor assembly 102 includes a rubber-coated roller 103 and a chain drive device 104 for driving the rubber-coated roller 103. The tray conveying mechanism 100 has conveyor rollers 105 arranged in a row, and the conveyor rollers 105 are connected to a second chain drive device 106. A tray pulling mechanism 107 is installed below the conveyor rollers 105, and a lifting member 108 is installed below the tray pulling mechanism 107 for lifting the tray pulling mechanism 107. The tray pulling mechanism 107 is used to receive the trays on the roller conveyor assembly 102 and move them above the conveyor rollers 105. The material tray conveying mechanism 100 has a cell discharge area 109 in the middle, and the cell discharge area 109 is equipped with a barcode scanner 110 for tracing product production information.

[0040] Specifically, the loading / unloading robot assembly 2 includes a material handling robot support 200 and a transfer robot support column 201. A material handling guide rail 202 is mounted on the material handling robot support 200, and two sets of material handling robots 203 are slidably connected to the material handling guide rail 202. The material handling robots 203 are used to receive and grasp the battery cells on the infeed side and transport them to the discharge line assembly 10 on the discharge side. The material handling slide plate 204 of the material handling robot 203 is slidably mounted on the material handling guide rail 202, and a drive motor 205 and a mounting beam 206 are connected and mounted on the material handling slide plate 204. A material handling lifting module 207 is connected and mounted on the mounting beam 206, and a drive motor 208 is connected and mounted on the material handling lifting module 207. A gripper device 210 is mounted on the moving slider 209 of the material handling lifting module 207. A transverse module 211 is mounted on the support column 201 of the transfer robot, and a drive motor 212 is connected to the transverse module 211. A transfer and material handling module 214 is mounted on the movable slider 213 of the transverse module 211, a material handling gripper device 210 is mounted on the movable slider 215 of the transfer and material handling module 214, and a drive motor 216 is mounted on the transfer and material handling module 214.

[0041] Specifically, the jig return line 3 includes a battery cell jig 300 and a return line frame 301. An upper jig guide rail mounting bracket 302 is fixedly mounted on the return line frame 301. An upper jig guide rail 303 is mounted on the upper jig guide rail mounting bracket 302, and a lower jig guide rail 305 is mounted on the lower jig guide rail mounting bracket 304. Multiple battery cell jigs 300 are slidably mounted on the upper jig guide rail 303 and the lower jig guide rail 305. An upper circulation component 306 is mounted on the return line frame 301 below the upper jig guide rail mounting bracket 302, and a lower circulation component 307 is mounted below the lower jig guide rail mounting bracket 304. A first jig lifting module 308 is provided on the feeding side of the upper jig guide rail mounting bracket 302, and a second jig lifting module 309 is provided on the discharging side. The upper circulation assembly 306, lower circulation assembly 307, first fixture lifting module 308, and second fixture lifting module 309 are used to drive the cell fixture 300 to reciprocate between the upper fixture guide rail 303 and the lower fixture guide rail 305. The upper circulation assembly 306 includes a linear module 310 and a linear module 311 aligned at both ends, and the lower circulation assembly 307 includes a linear module 312 and a linear module 313 aligned at both ends. The linear module 313 is arranged vertically opposite to the linear module 310, and the linear module 312 is arranged vertically opposite to the linear module 311. After the cell enters the cell fixture 300, the linear module 310 drives the cell fixture 300 to the end of the linear module 310, and the linear module 311 moves the cell fixture 300 to the end of the second fixture lifting module 309. The second fixture lifting module 309 picks up the cell fixture 300 and transports it to the linear module 312. Then, the linear module 413 moves the cell fixture 300 to one end of the linear module 413. Next, the linear module 413 moves the cell fixture 300 to the end of the first fixture lifting module 308. Finally, the first fixture lifting module 308 transports the cell fixture 300 to the feed side of the linear module 110. Near the discharge side of the fixture return line 3, there are sequentially arranged a material pick-up position, a helium return position, a glue-applying position, a glue-applying detection position, and a discharge position. The battery with completed electrolyte filling is pulled to the helium return position by the linear modules 110 and 211 to inject helium into the battery. Then, the battery filling port is sealed at the glue-applying position. When passing the glue-applying detection position, the effectiveness of the glue-applying seal can be checked.

[0042] Specifically, the material tray transfer line 4 includes a transfer mounting frame 400. The upper end of the transfer mounting frame 400 is equipped with a material tray translation track 401, and the lower end is equipped with a linear conveyor module 402. The linear conveyor module 402 is equipped with a dragging device 403, which is equipped with a pull rod cylinder 405 that cooperates with the pull block on the material tray. Both ends of the linear conveyor module 402 are equipped with buffer lifting mechanisms 406 for raising or lowering the material tray.

[0043] Specifically, the liquid injection mechanism 5 includes a liquid injection frame 500. From top to bottom, the liquid injection mechanism 5 is equipped with a liquid injection port plug 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 plug rod lifting plate to raise the central plug rod. Electrolyte automatically flows into the battery from the gap between the central plug rod and the liquid injection cup. Then, 0.5 MPa of nitrogen gas is injected. After a certain period, a vacuum is drawn. Nitrogen gas injection and vacuum drawing are performed alternately. After a certain period, the vacuum is broken, and the clamp transfer lifting mechanism descends, causing the clamp to descend. The clamp transfer assembly drags the clamp away from the liquid injection position of the liquid injection mechanism 5. A servo motor drives a synchronous pulley and belt to move the waste liquid collection box to the first waste liquid collection position. Nitrogen gas is then introduced to clean the inner wall of the injection cup. After cleaning, the lifting cylinder in the injection assembly 503 drives the blocking rod lifting plate to lower the central blocking rod. Nitrogen gas is then introduced to clean the inner hole of the central blocking rod. Once the inner hole of the central blocking rod is cleaned, the entire cylindrical lithium battery injection process is complete. The mechanism can replace the corresponding cups according to the product size. Every 18 cups are integrated on a cup adapter plate. During changeover, the cups and adapter plate are simply assembled offline and then placed under the injection substrate, enabling rapid changeover. The mechanism can inject up to 324 batteries per station per cycle, resulting in high injection efficiency. It is suitable for a wide range of product sizes, offers fast product changeover speed, and provides high injection accuracy and efficiency.

[0044] Specifically, the barcode weighing assembly 6 includes a weighing platform 600, a cell replenishment rack 601, and a barcode scanner 110 mounted on the barcode scanner 110 drive module. A cell replacement device 603 is slidably mounted on the replenishment rack. The barcode weighing assembly 6 is used for cell replacement and for obtaining battery electrolyte level information.

[0045] Specifically, the sealing staple assembly 7 includes a sealing staple gripping module 700 and a sealing staple storage platform 701. The sealing staple gripping module 700 includes a sealing staple gripper 705 mounting bracket 702, a translation module 703 is mounted on the sealing staple gripper 705 mounting bracket 702, a sealing staple gripping lifting module 704 is slidably mounted on the translation module 703, and the sealing staple gripper 705 is mounted on the sealing staple lifting module 704. A sealing staple pitch-changing module 706 is mounted on the discharge side of the sealing staple storage platform 701, and a shooting positioning mechanism 707 is provided on the top.

[0046] Specifically, the wiping assembly 8 includes a wiping hand mechanism 800 and a cloth feeding mechanism 801. The wiping hand mechanism 800 includes a wiping gripper 802 and a wiping gripper 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 inlet / outlet pipes 904. The inlet / outlet pipes 904 are connected to the injection mechanism to provide electrolyte raw materials to the electrolyte valve.

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

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cylindrical battery liquid filling machine, characterized in that, The system includes a sequentially arranged feeding logistics line, a loading / unloading robotic arm assembly, a fixture return line, a sealing assembly, a wiping assembly, and a discharge line assembly. Below the loading / unloading robotic arm assembly is a tray transfer line, with liquid injection mechanisms at both ends. Barcode scanning and weighing components are arranged on both sides of the tray transfer line, and a liquid infusion assembly is placed on one side of each liquid injection mechanism. The fixture return line includes a battery cell fixture and a return line frame, with an upper fixture guide rail mounting bracket fixedly installed on the return line frame. The upper fixture guide rail mounting frame is equipped with an upper fixture guide rail, and the lower fixture guide rail mounting frame is equipped with a lower fixture guide rail. Multiple battery cell fixtures are slidably mounted on the upper fixture guide rail and the lower fixture guide rail. An upper circulation assembly is installed on the return line frame below the upper fixture guide rail mounting frame, and a lower circulation assembly is installed below the lower fixture guide rail mounting frame. A first fixture lifting module is provided on the feeding side of the upper fixture guide rail mounting frame, and a second fixture lifting module is provided on the discharging side. The upper circulation component, lower circulation component, first fixture lifting module, and second fixture lifting module are used to drive the battery cell fixture to reciprocate between the upper fixture guide rail and the lower fixture guide rail; the sealing assembly includes a sealing nail gripping module and a sealing nail storage platform; the sealing nail gripping module includes a sealing nail gripper mounting frame, a translation module is mounted on the sealing nail gripper mounting frame, a gripping lifting module is slidably mounted on the translation module, and a sealing nail gripper is mounted on the gripping lifting module; a sealing nail variable distance module is mounted on the discharge side of the sealing nail storage platform, and a shooting positioning mechanism is provided on the top of the sealing assembly.

2. The cylindrical battery electrolyte filling machine according to claim 1, characterized in that: The material feeding line includes a tray conveying mechanism and two sets of feeding racks. A roller conveyor assembly is installed on the infeed side of each feeding rack, and the discharge side of the roller conveyor assembly is connected to the tray conveying mechanism. The roller conveyor assembly includes a rubber-coated roller and a chain drive device for driving the rubber-coated roller. The tray conveying mechanism has conveyor rollers arranged in a row, and the conveyor rollers are connected to a chain drive device. A tray-pulling mechanism is installed below the conveyor rollers, and a lifting component is installed below the tray-pulling mechanism to lift it. The tray-pulling mechanism receives the trays from the roller conveyor assembly and moves them above the conveyor rollers. A battery cell discharge area is located in the middle of the tray conveying mechanism, and a barcode scanner for tracing product production information is installed in the battery cell discharge area.

3. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The loading and unloading robot assembly includes a material handling robot support and a transfer robot support column. A material handling guide rail is mounted on the material handling robot support, and two sets of material handling robots are slidably connected to the material handling guide rail. The material handling robots are used to receive and grasp the battery cells on the infeed side and transport them to the discharge line assembly on the discharge side. The material handling sliding plate of the material handling robot is slidably mounted on the material handling guide rail, and a drive motor and a mounting beam are connected to the material handling sliding plate. A material handling lifting module is connected to the mounting beam, and a drive motor is connected to the material handling lifting module. A gripper device is mounted on the moving slider of the material handling lifting module. A transverse module is mounted on the transfer robot support column, and a drive motor is connected to the transverse module. A transfer and picking module is mounted on the moving slider of the transverse module, and a gripper device is mounted on the moving slider of the transfer and picking module. A drive motor is mounted on the transfer and picking module.

4. The cylindrical battery electrolyte filling machine according to claim 1, characterized in that: 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 vertically corresponding to the linear module 1, and the linear module 3 is arranged vertically corresponding to the linear module 2. After the battery cell enters the battery cell fixture, the linear module 1 drives the battery cell fixture to one end of the linear module, and the linear module 2 moves the battery cell fixture to the end of the second fixture lifting module. Then, the second fixture lifting module grabs the battery cell fixture and transports it to the linear module 3. The linear module 4 moves the battery cell fixture to one end of the linear module 4, and then the linear module 4 moves the battery cell fixture to the end of the first fixture lifting module. Finally, the first fixture lifting module transports the battery cell fixture to the feeding side end of the linear module 1.

5. The cylindrical battery electrolyte filling machine according to claim 1, characterized in that: The material tray transfer line includes a transfer mounting frame; the upper end of the transfer mounting frame is provided with a material tray translation track, and the lower end is provided with a linear transport module; the linear transport module is equipped with a dragging device, and the dragging device is provided with a pull rod cylinder that cooperates with the pull block on the material tray; the two ends of the linear transport module are provided with buffer lifting mechanisms for lifting or lowering the material tray.

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

7. The cylindrical battery liquid filling machine according to claim 1, characterized in that: The barcode weighing assembly includes a weighing platform, a battery cell replenishment rack, and a barcode scanner mounted on the barcode scanner drive module. The battery cell replenishment rack is slidably equipped with a battery cell replacement device.

8. The cylindrical battery electrolyte filling machine according to claim 1, characterized in that: The wiping assembly includes a wiping hand mechanism and a cloth feeding mechanism. The wiping hand mechanism includes a wiping gripper and a wiping gripper translation module. The infusion assembly includes a main electrolyte tank, a secondary electrolyte tank, a waste liquid tank, a connecting pipe, and inlet and outlet pipes.

9. The cylindrical battery electrolyte filling machine according to claim 1, characterized in that: The discharge line assembly includes a discharge line, which is equipped with a horizontal wheel bend structure and a discharge belt motor for providing power; the discharge line assembly is used to drive the discharge disc to move along the discharge line track to the next station.

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