A supercapacitor cell liquid injection production line

Abstract

The application relates to a super capacitor battery liquid injection production line, which comprises a machine table, a feeding device, an alignment device, a liquid injection device and a discharging device. The feeding device comprises a circulating conveying line and a sorting mechanism, and qualified batteries to be injected are conveyed to the alignment device through the circulating conveying line. The alignment device comprises an alignment mechanism and a first weighing mechanism, and the alignment mechanism is used for adjusting the angular position of the batteries to be injected. The liquid injection device comprises a vacuum liquid injection mechanism, multiple normal-pressure liquid injection mechanisms and a tray translation mechanism, and the batteries to be injected in a battery tray sequentially pass through the vacuum liquid injection mechanism and each normal-pressure liquid injection mechanism to complete liquid injection. The discharging device comprises a second weighing mechanism, a cover combining mechanism and a discharging conveying line, the cover combining mechanism is used for combining covers on the qualified batteries after weighing, and the discharging conveying line is used for transferring the batteries after cover combination on the cover combining mechanism. The super capacitor battery liquid injection production line can realize precise control of the liquid injection process, improve the liquid injection yield, and further improve the finished lithium battery yield.

Description

Technical Field

[0001] This invention relates to the field of supercapacitor battery production equipment, and more specifically, to a supercapacitor battery electrolyte injection production line. Background Technology

[0002] Supercapacitors, with their advantages of high power density, long cycle life, and high energy density, have shown broad application prospects in new energy vehicles, rail transit energy recovery, power grid frequency regulation, and smart terminals. In the manufacturing process of supercapacitors, the electrolyte injection process is one of the core steps determining their electrochemical performance, cycle stability, and safety reliability. The accuracy, efficiency, and stability of electrolyte injection directly affect product quality and production efficiency. Currently, many existing electrolyte injection production lines lack effective pre-sorting mechanisms in their material feeding stages. Defective batteries mixed in with the batteries awaiting electrolyte injection flow directly into subsequent processes, wasting electrolyte, increasing production costs, and affecting the electrolyte injection yield, which in turn affects the yield of finished lithium batteries. Furthermore, the lack of closed-loop control in the electrolyte injection process itself makes it impossible to accurately control the electrolyte injection volume deviation, further reducing the yield of finished lithium batteries. Summary of the Invention

[0003] The purpose of this invention is to provide a supercapacitor battery liquid injection production line that can achieve precise control of the liquid injection process, improve the liquid injection yield, and thus improve the yield of finished lithium batteries.

[0004] A supercapacitor battery electrolyte injection production line includes a machine base, a feeding device, an alignment device, an injection device, and a discharge device sequentially arranged on the machine base along the battery conveying direction. The feeding device includes a circulating conveyor line and a sorting mechanism disposed beside the circulating conveyor line. The sorting mechanism is used to sort and remove unqualified batteries from the circulating conveyor line, and qualified batteries are conveyed to the alignment device via the circulating conveyor line. The alignment device includes an adjacent alignment mechanism and a first weighing mechanism. The alignment mechanism is used to adjust the angular position of the batteries to be injected, and the first weighing mechanism is used to weigh the batteries to be injected. The liquid injection device includes a vacuum liquid injection mechanism and multiple atmospheric pressure liquid injection mechanisms arranged in sequence, and a tray translation mechanism. The tray translation mechanism is used to synchronously translate the battery trays of the vacuum liquid injection mechanism and the multiple atmospheric pressure liquid injection mechanisms along the conveying direction by one station distance. The batteries to be injected in the battery trays pass through the vacuum liquid injection mechanism and each atmospheric pressure liquid injection mechanism in sequence to complete the liquid injection. The unloading device includes a second weighing mechanism and a capping mechanism arranged adjacent to each other, and an unloading conveyor line. The second weighing mechanism is used to weigh the batteries after liquid injection. The capping mechanism is used to cap the batteries that have passed the weighing test. The unloading conveyor line is used to transfer the capped batteries from the capping mechanism.

[0005] In this solution, by sequentially setting up feeding, alignment, electrolyte injection, and unloading devices along the battery conveying direction, a complete automated electrolyte injection production line is formed. This achieves fully automated control of the entire process from feeding the batteries to unloading them after electrolyte injection, significantly improving production efficiency. The feeding device continuously transports the batteries to be injected via a circulating conveyor line. With the help of a side sorting mechanism, defective batteries can be quickly sorted and removed before entering subsequent processes, avoiding the occupation of equipment resources by defective batteries, reducing electrolyte waste, and laying the foundation for subsequent high-precision electrolyte injection, effectively improving the electrolyte injection pass rate. A dedicated alignment mechanism precisely adjusts the angle and position of the battery to be injected, avoiding interference between the battery's injection port cap and the injection nozzle of the injection device. This ensures accurate alignment and prevents injection deviation. The design employs a vacuum injection mechanism coupled with multiple atmospheric pressure injection mechanisms working in sequence, combined with a tray translation mechanism to achieve continuous switching between battery stations. The battery first undergoes vacuum injection for rapid electrolyte penetration, followed by multiple atmospheric pressure injection stages for precise replenishment and deep wetting. This effectively solves problems such as insufficient wetting, residual air bubbles, and injection volume deviation caused by single injection methods. Simultaneously, the multi-station synchronous translation design enables multi-stage continuous injection, significantly improving injection efficiency. The first weighing mechanism in the alignment device weighs qualified batteries before injection, providing benchmark data for precise control of the injection volume. The second weighing mechanism in the unloading device performs a second weighing of the batteries after injection, quickly screening out products with substandard injection volumes and preventing them from entering subsequent production processes, thus improving the yield of finished lithium batteries.

[0006] Furthermore, the sorting mechanism includes a first scanning unit disposed beside the circulating conveyor line, a sorting clamping assembly disposed above the circulating conveyor line, and a first defective conveyor line disposed beside the circulating conveyor line; a sorting blocking unit is provided beside the circulating conveyor line to block and release batteries to be injected. When a battery to be injected moves to below the sorting clamping assembly, it is blocked by the sorting blocking unit. The sorting clamping assembly clamps the battery to be injected from the circulating conveyor line. The first scanning unit scans the clamped battery to be injected to distinguish between qualified batteries and unqualified batteries. The sorting clamping assembly puts the qualified batteries back onto the circulating conveyor line and transfers the unqualified batteries to the first defective conveyor line.

[0007] In this solution, the sorting and blocking unit positions the batteries to be injected, ensuring alignment between the batteries and the sorting clamping assembly, thus improving sorting accuracy. The first scanning unit distinguishes between qualified and unqualified batteries by scanning barcodes, quickly identifying key information such as battery model, batch, and appearance defects, enabling precise screening of unqualified batteries. The sorting clamping assembly precisely grips and transfers the batteries, preventing damage during sorting, and simultaneously transfers unqualified batteries to the first defect conveyor line, effectively separating qualified and unqualified batteries and preventing them from mixing into subsequent processes. This further reduces electrolyte waste and production costs, laying the foundation for improved yield in subsequent injection processes. The entire sorting process is automated, requiring no manual intervention, thus improving the automation level and production efficiency of the production line. Furthermore, the sorting mechanism also includes a wiping component disposed next to the sorting clamping assembly, the wiping component being used to wipe the battery to be injected held by the sorting clamping assembly.

[0008] In this solution, a wiping component is added to the sorting mechanism to wipe away the dirt on the bottom of the battery to be injected during the sorting process, so as to prevent the dirt from adhering to the battery surface and affecting the appearance of the battery.

[0009] Furthermore, the alignment mechanism includes a mounting plate, a plurality of calibration shafts arranged in an array and rotatably mounted on the mounting plate, a lateral movement unit disposed below the calibration shafts, at least one shaft drive member disposed on the lateral movement unit that can drive the calibration shafts to rotate, and at least one detection unit for detecting the angular position of the battery to be injected; one end of the calibration shaft is provided with a loading groove for loading the battery to be injected, and the other end can be driven to connect with the shaft drive member; the lateral movement unit can synchronously drive the shaft drive member and the detection unit to move along the length direction of the mounting plate.

[0010] In this solution, the loading slot on the calibration shaft can position the battery, preventing it from shifting during alignment and ensuring alignment accuracy. The detection unit can accurately detect the angular position of the battery, providing a precise angle adjustment basis for the shaft drive component, achieving accurate battery angle correction, avoiding interference between the cap of the battery filling port and the filling nozzle of the filling device, and achieving accurate filling alignment. The transverse unit can synchronously drive the shaft drive component and the detection unit to move, realizing the sequential driving and detection of multiple calibration shafts, eliminating the need for separate multiple sets of drive and detection components, and reducing equipment manufacturing costs.

[0011] Furthermore, the alignment device also includes a first clamping and transfer mechanism and a second clamping and transfer mechanism located above the alignment mechanism and the first weighing mechanism; the first clamping and transfer mechanism is used to transfer qualified batteries to be injected from the circulating conveyor line to the alignment mechanism and to transfer batteries to be injected after angular position adjustment from the alignment mechanism to the first weighing mechanism; the second clamping and transfer mechanism is used to transfer batteries to be injected after weighing from the first weighing mechanism to the battery tray of the injection device.

[0012] In this solution, by setting up the first and second clamping and transferring mechanisms, the automatic transfer of batteries between the circulating conveyor line, the alignment mechanism, the first weighing mechanism, and the liquid injection device is realized, improving the transfer efficiency and ensuring the smooth connection of each process in the production line. The second clamping and transferring mechanism can accurately transfer the weighed batteries to the battery tray of the liquid injection device, ensuring that the angle and position of the batteries do not shift during the transfer process, and ensuring the smooth progress of the subsequent liquid injection process.

[0013] Furthermore, the pallet translation mechanism includes a pallet translation line and a pallet return line disposed below the pallet translation line. The pallet translation line synchronously translates the battery pallets of the vacuum liquid injection mechanism and multiple atmospheric pressure liquid injection mechanisms along the conveying direction by one station distance. The pallet return line is used to return empty battery pallets to the pallet translation line.

[0014] In this solution, the tray translation line enables the synchronous translation of multiple battery trays, ensuring that the batteries in each tray can sequentially pass through the vacuum liquid injection mechanism and each atmospheric pressure liquid injection mechanism to achieve staged liquid injection. This avoids electrolyte overflow caused by excessive liquid injection in a single operation, while also ensuring the uniformity of liquid injection, improving liquid injection accuracy and yield. The tray return line can return the empty trays after the batteries have been removed from the liquid injection process to the initial station, realizing the recycling of battery trays. The tray translation line and the tray return line work together to form a circular flow of trays, ensuring the continuous operation of the liquid injection process and improving the production efficiency and continuity of the production line.

[0015] Furthermore, the tray translation line includes a support line body that docks with the alignment device. Battery trays are arranged closely and sequentially on the support line body. The support line body includes a first battery tray position at one end of the line body, a second battery tray position at the other end of the line body that has completed all liquid injection, and a pushing unit located next to the first battery tray position. The pushing unit pushes the battery tray at the first battery tray position to move, which can drive other battery trays on the support line body to move synchronously, so that the battery tray loaded with the battery that has completed all liquid injection processes moves to the second battery tray position.

[0016] In this design, the support line connects with the alignment device, facilitating the precise placement of weighed batteries into the battery tray by the second clamping and transfer mechanism, ensuring accurate battery loading. The battery trays are arranged closely in sequence, maximizing the use of the support line's space, enhancing the batch processing capacity of the liquid injection process, and improving production efficiency. The pushing unit moves all trays synchronously by pushing the tray at the first battery tray position. This design is simple in structure, reliable in operation, and eliminates the need for separate drive components for each tray, reducing equipment manufacturing and maintenance costs. Synchronous movement ensures that each tray moves the same distance, preventing liquid injection misalignment caused by tray displacement and ensuring the stability and accuracy of the liquid injection process. Once all liquid injection is complete, the tray moves to the second battery tray position, facilitating subsequent battery unloading and the return of empty trays, achieving a smooth connection between the liquid injection process and the subsequent unloading process.

[0017] Furthermore, the first battery tray position and the second battery tray position are respectively provided with a tray transfer mechanism. The tray transfer mechanism of the first battery tray position is used to transfer the empty battery tray on the tray return line to the first battery tray position, and the tray transfer mechanism of the second battery tray position is used to transfer the empty battery tray of the second battery tray position to the tray return line.

[0018] In this solution, by setting up pallet transfer mechanisms at the first and second battery pallet positions, empty pallets are automatically transferred from the pallet return line to the first battery pallet position and from the second battery pallet position to the pallet return line without manual intervention, further improving the automation level and production efficiency of the production line. The pallet transfer mechanism at the first battery pallet position can replenish empty pallets in a timely manner, ensuring the continuous operation of the liquid filling process and avoiding production interruptions due to insufficient empty pallets. The pallet transfer mechanism at the second battery pallet position can return empty pallets in a timely manner, realizing the circulation of pallets, reducing pallet accumulation, and saving production space.

[0019] Furthermore, the feeding device also includes a defective electrolyte replenishment mechanism, which is used to replenish electrolyte in batteries that fail to meet the weight requirements.

[0020] In this solution, for unqualified batteries with insufficient electrolyte volume detected by the second weighing mechanism, precise electrolyte replenishment can be performed through the defective electrolyte replenishment mechanism, eliminating the need for direct rejection, reducing battery waste, and lowering production costs. The defective electrolyte replenishment mechanism can calculate the required electrolyte volume based on the initial weight of the first weighing mechanism and the actual weight of the second weighing mechanism, achieving precise electrolyte replenishment, ensuring that the electrolyte volume of the replenished battery meets the standard, and improving the battery pass rate.

[0021] Furthermore, it also includes a centralized liquid filling device for the entire machine, which includes an electrolyte tank, a storage tank, an iron removal filter pipeline connecting the electrolyte tank and the storage tank, and a fourth scanning unit; the storage tank is connected to a vacuum liquid filling mechanism, an atmospheric pressure liquid filling mechanism, and a fault replenishment mechanism through pipelines; the fourth scanning unit is used to scan the QR code on the electrolyte tank to confirm that the electrolyte model matches the battery to be filled.

[0022] This solution incorporates a centralized electrolyte supply system, enabling centralized supply of electrolyte to all relevant components. Compared to decentralized supply, this simplifies pipeline layout, reduces equipment maintenance costs, and facilitates unified control over electrolyte supply and usage, preventing waste. An iron removal and filtration system removes iron and other particulate matter from the electrolyte, preventing impurities from entering the battery and affecting its electrochemical performance, cycle life, and safety, thus improving lithium battery product quality. A fourth scanning unit scans the QR code on the electrolyte tank to confirm the electrolyte model matches the battery being filled, preventing battery damage and reduced filling yield due to incorrect electrolyte model selection, ensuring accuracy and safety during the filling process. A storage tank stores a certain amount of electrolyte, preventing production stoppages due to electrolyte supply interruptions and ensuring continuous and stable production line operation.

[0023] Compared with existing technologies, the beneficial effects of this invention are as follows: In this solution, the feeding device continuously transports the batteries to be injected through a circulating conveyor line, and with the help of the side sorting mechanism, unqualified products can be quickly sorted and removed before entering the subsequent process, avoiding the occupation of equipment resources by unqualified batteries, reducing electrolyte waste, and laying the foundation for subsequent high-precision injection, effectively improving the injection qualification rate. A dedicated alignment mechanism achieves precise adjustment of the angle and position of the batteries to be injected, ensuring that the cap of the battery injection port does not interfere with the injection nozzle of the injection device, achieving precise injection alignment and avoiding problems such as injection deviation; the design of a vacuum injection mechanism and multiple atmospheric pressure injection mechanisms working in sequence, combined with a tray translation mechanism, enables continuous switching of battery stations, allowing the batteries to first undergo vacuum injection for rapid electrolyte penetration, and then complete precise replenishment and deep wetting through multiple atmospheric pressure injections, effectively solving problems such as insufficient wetting, residual air bubbles, and injection volume deviation caused by a single injection method; at the same time, the multi-station synchronous translation design enables multi-stage continuous injection of batteries, significantly improving injection efficiency. The first weighing mechanism in the alignment device weighs the qualified batteries before liquid injection, providing benchmark data for precise control of the liquid injection amount; the second weighing mechanism in the unloading device weighs the batteries after liquid injection, which can quickly screen out products with unqualified liquid injection amount, prevent unqualified batteries from flowing into subsequent production processes, and improve the yield of lithium battery finished products. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the layout of a supercapacitor battery electrolyte injection production line according to an embodiment of the present invention.

[0025] Figure 2 This is a front view of the supercapacitor battery electrolyte injection production line according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the feeding device according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the feeding mechanism according to an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the sorting mechanism according to an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the first scanning unit in an embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the wiping assembly according to an embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram of the alignment device according to an embodiment of the present invention.

[0032] Figure 9 This is a schematic diagram of the alignment mechanism according to an embodiment of the present invention.

[0033] Figure 10 This is a schematic diagram of the alignment mechanism from another perspective in an embodiment of the present invention.

[0034] Figure 11 This is a schematic diagram of the structure of the first weighing mechanism according to an embodiment of the present invention.

[0035] Figure 12 This is a schematic diagram of the structure of the first clamping and transferring mechanism according to an embodiment of the present invention.

[0036] Figure 13 This is a schematic diagram of the structure of the first clamping and transferring mechanism according to an embodiment of the present invention.

[0037] Figure 14 This is a schematic diagram of the liquid injection device according to an embodiment of the present invention.

[0038] Figure 15 This is a schematic diagram of the vacuum liquid injection mechanism according to an embodiment of the present invention.

[0039] Figure 16 This is a schematic diagram of the vacuum liquid injection mechanism from another perspective in an embodiment of the present invention.

[0040] Figure 17 This is a schematic diagram of the structure of two atmospheric pressure injection mechanisms connected in an embodiment of the present invention.

[0041] Figure 18 This is a schematic diagram of the atmospheric pressure injection mechanism according to an embodiment of the present invention.

[0042] Figure 19 This is a schematic diagram of the vacuum settling mechanism according to an embodiment of the present invention.

[0043] Figure 20 This is a schematic diagram of the pallet translation mechanism according to an embodiment of the present invention.

[0044] Figure 21 This is a schematic diagram of the feeding device according to an embodiment of the present invention.

[0045] Figure 22 This is a schematic diagram of the faulty fluid replenishment mechanism according to an embodiment of the present invention.

[0046] Figure 23 This is a schematic diagram of the centralized liquid addition device for the whole machine according to an embodiment of the present invention.

[0047] Explanation of icon numbers: 1. Machine tool; 2. Feeding device; 21. Circulating conveyor line; 211. Separation baffle; 22. Feeding mechanism; 221. Battery clamping and positioning assembly; 2211. Battery storage track; 2212. Battery partition unit; 2213. Battery partition positioning unit; 222. Feeding robot; 223. Annular cup positioning assembly; 2231. Annular cup partition unit; 2232. Annular cup stop unit; 2233. Annular cup positioning unit; 23. Sorting mechanism; 231. First scanning unit; 2311. Scanning slide rail; 2312. Scanning slider; 2313. Scanner; 2314. First lead screw drive unit; 232. Sorting clamping assembly; 2321. Second support frame; 2322. First sliding plate; 2323. Sixth cylinder; 2324. Second lifting cylinder; 2325. Second gripper cylinder; 233. First defective conveyor line; 234. Wiping assembly; 2341. Lifting sliding plate; 2342. Brush plate mounting plate; 2343. Brush plate; 2344. Brush plate drive motor; 2345. Seventh cylinder; 2346. Eighth cylinder; 3. Alignment device; 31. First rack; 32. Alignment mechanism; 321. Mounting plate; 322. Alignment shaft; 323. Lateral movement unit; 324. Shaft drive component; 325. Detection unit; 3221. Loading slot; 3231. Fixing plate; 3232. Sliding carrier plate; 3233. Second lead screw drive unit; 3234. Shaft drive component carrier plate; 3235. Ninth cylinder; 33. First weighing mechanism; 331. Electronic scale; 332. Weighing clamping unit; 34. First gripping and transferring mechanism; 341. Second slide plate; 342. Second slide plate drive unit; 343. Third lifting cylinder; 344. Third gripper cylinder; 35. Second clamping and transferring mechanism; 36. Second Scanning Unit 4. Liquid injection device; 41. Vacuum injection mechanism; 411. Third support frame; 412. Vacuum injection tank; 413. Fourth lifting cylinder; 414. Injection needle unit; 4121. Injection cup; 4141. First injection sliding plate; 4142. First injection fixing plate; 4143. First injection needle; 4144. Fifth lifting cylinder; 4145. Third lead screw drive unit; 4146. Fourth lead screw drive unit; 42. Atmospheric pressure injection mechanism; 421. Injection support plate; 422. Second injection sliding plate; 423. Third injection sliding plate; 424. Seventh lifting cylinder; 425. Second injection fixing plate; 426. Second injection needle; 427. Second displacement adjusting screw; 4271. First bevel gear; 428. Power guide rod; 4281. Second bevel gear; 429. Third displacement adjusting screw; 43. Vacuum settling mechanism; 431. Fourth support frame; 432. Vacuum box; 433. Sixth lifting cylinder; 44. Pallet translation mechanism; 441. Pallet translation line; 4411. Support line body; 4412. Battery pallet; 4413. Vacuum filling position; 4414. Filling and settling position; 4415. Atmospheric pressure filling position; 4416. First battery pallet position; 4417. Second battery pallet position; 442. Pallet return line; 443. Pushing unit; 444. Pallet transfer mechanism; 5. Feeding device; 51. Second weighing mechanism; 52. Cover closing mechanism; 53. Third clamping and transferring mechanism; 54. Fourth clamping and transferring mechanism; 55. Feeding conveyor line; 56. Defective liquid replenishment mechanism; 561. Liquid replenishment positioning track; 562. Liquid replenishment needle; 57. Feeding mechanism; 58. Second defective conveyor line; 6. Centralized liquid addition device for the whole machine; 61. Electrolyte tank; 62. Storage tank; 63. Iron removal filter pipeline; 64. Fourth scanning unit; 65. Electronic scale. Detailed Implementation

[0048] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0049] like Figure 1 and Figure 2 As shown, this embodiment provides a supercapacitor battery electrolyte injection production line, including a machine base 1, a feeding device 2, an alignment device 3, an electrolyte injection device 4, and a discharging device 5 arranged sequentially on the machine base 1 along the battery conveying direction; the electrolyte injection production line is connected to upstream automated equipment or an automated production line, and the battery to be injected is conveyed to the feeding position of the feeding device 2, the feeding device 2 transfers the battery to be injected to the production line, and the battery is injected sequentially through the alignment device 3 and the electrolyte injection device 4, and the discharging device 5 transfers the injected battery to the position to dock with the next process automated equipment or production line.

[0050] like Figures 3 to 8 As shown, the feeding device 2 includes a circulating conveyor line 21 for circulating conveying annular cups, a feeding mechanism 22 located beside the circulating conveyor line 21, and a sorting mechanism 23 located downstream of the feeding mechanism 22. The feeding mechanism 22 is used to clamp the batteries to be injected and place them in the annular cup at the feeding position of the circulating conveyor line 21. The sorting mechanism 23 is used to sort out and remove unqualified batteries from the circulating conveyor line 21, and qualified batteries are conveyed to the alignment device 3 through the circulating conveyor line 21.

[0051] Multiple ring cups are placed on the circulating conveyor line 21. The line body is driven to rotate at a constant speed by a servo motor and a reduction mechanism to realize the circulating conveying of the ring cups.

[0052] The feeding mechanism 22 includes a battery gripping and positioning component 221, a feeding robot 222, and a ring cup positioning component 223 located beside the circulating conveyor line 21. The battery gripping and positioning component 221 is connected to upstream automated equipment or automated production line to receive and position the batteries to be injected with liquid from upstream, providing a precise positioning basis for the gripping operation of the feeding robot 222.

[0053] The loading robot 222 includes a first support frame mounted on the machine base 1, a linear guide cylinder mounted on the first support frame, a first lifting cylinder mounted on the linear guide cylinder, and a first gripper cylinder mounted at the output end of the first lifting cylinder. The functions of each component are as follows: the first gripper cylinder is used to grip or release the battery to be injected with electrolyte, and its gripping force is adapted to the structural strength of the battery to avoid damaging it; the first lifting cylinder is used to drive the first gripper cylinder to move vertically up and down, realizing height adjustment for gripping and placing actions; the linear guide cylinder is used to drive the first lifting cylinder and the first gripper cylinder as a whole to reciprocate between the battery storage track 2211 of the battery gripping and positioning assembly 221 and the loading position on the circulating conveyor line 21, completing the transfer and conveying of the battery to be injected with electrolyte. The number of first gripper cylinders can be designed according to the actual production cycle requirements. In this embodiment, two first gripper cylinders are set, that is, two batteries to be injected can be gripped simultaneously at one time, which improves the feeding efficiency. In other embodiments, one or more first gripper cylinders can also be set, as long as they are adapted to the production cycle and the structure of the battery storage track 2211.

[0054] The battery clamping and positioning assembly 221 includes a battery storage track 2211, a battery separator unit 2212 disposed beside the battery storage track 2211, and a battery separation and positioning unit 2213. The battery separator unit 2212 includes a first cylinder and a first separator component disposed at the output end of the first cylinder. The battery separation and positioning unit 2213 includes a second cylinder and a first separation and positioning component disposed at the output end of the second cylinder. The battery separator unit 2212 is used to separate and block batteries to be injected with electrolyte that have been moved upstream to the battery storage track 2211. Specifically, the first cylinder drives the first separator component to move towards the battery storage track 2211 until the first separator component is in contact with the side of the battery storage track 2211. The first separator component blocks subsequent batteries to be injected with electrolyte from contacting or colliding with the batteries to be clamped, ensuring the stable position of the batteries to be clamped. The battery separation and positioning unit 2213 is used to fix and separate the batteries to be injected with electrolyte within the battery storage track 2211. In operation, the second cylinder drives the first separating positioning member to move towards the battery storage track 2211, causing the first separating positioning member to insert between two adjacent batteries to be clamped and injected with electrolyte. This achieves both separation of adjacent batteries and clamping and fixing each battery, ensuring the positioning accuracy of the loading robot 222 during clamping. In this embodiment, since there are two first gripper cylinders that clamp two batteries at a time, only one first separating positioning member is needed to separate and position the two batteries. It should be noted that the number of first separating positioning members must be adapted to the number of batteries to be clamped and injected with electrolyte; the number should be one less than the number of batteries to be clamped, ensuring that there is a first separating positioning member between each pair of adjacent batteries for separation and fixing.

[0055] The annular cup positioning assembly 223 is located beside the circulating conveyor line 21, corresponding to the working trajectory of the loading robot 222. It includes an annular cup baffle unit 2231, an annular cup stop unit 2232, and an annular cup positioning unit 2233. The annular cup baffle unit 2231 includes a third cylinder and a second baffle located at the output end of the third cylinder. The annular cup stop unit 2232 includes a fourth cylinder and a first stop located at the output end of the fourth cylinder. The annular cup positioning unit 2233 includes a fifth cylinder and a second separating positioning member located at the output end of the fifth cylinder. The functions of each unit are as follows: The annular cup stop unit 2232 intercepts the annular cup conveyed by the circulating conveyor line 21 to the corresponding position of the annular cup positioning assembly 223. Specifically, the fourth cylinder drives the first stop to extend onto the conveying path of the circulating conveyor line 21. When the annular cup moves to this position with the circulating conveyor line 21, the first stop intercepts the annular cup, causing it to stop at the preset position where the battery is to be placed. The annular cup partition unit 2231 is used to separate and block subsequent annular cups transported from upstream. Specifically, the third cylinder drives the second partition to move towards the circulating conveyor line 21, preventing subsequent annular cups from continuing to move and avoiding contact or collision with the annular cup containing the battery to be placed, thus ensuring the stability of the annular cup at the placement position. The annular cup positioning unit 2233 is used to fix and separate the annular cup containing the battery to be placed on the circulating conveyor line 21. Specifically, the fifth cylinder drives the second partition positioning member to move towards the circulating conveyor line 21, causing the second partition positioning member to insert between two adjacent annular cups containing the battery to be placed, achieving separation of adjacent annular cups and clamping and fixing of a single annular cup, providing positioning assurance for the accurate placement of the battery to be injected. In this embodiment, because the loading robot 222 picks up two batteries to be injected at a time and needs to place them simultaneously in two annular cups, the number of second partition positioning members is consistent with the number of first partition positioning members, set to one, to achieve synchronous positioning of the two annular cups containing the battery.

[0056] The specific working process of the loading robot 222 in gripping and transferring batteries to be injected with electrolyte is as follows: First, the battery gripping and positioning component 221 starts working, the battery partition unit 2212 blocks the upstream batteries to be injected with electrolyte, and the battery separation and positioning unit 2213 separates and positions the batteries to be gripped in the battery storage track 2211. At the same time, the annular cup positioning component 223 starts working, the annular cup stop unit 2232 intercepts the annular cup on the circulating conveyor line 21, the annular cup partition unit 2231 blocks the subsequent annular cups upstream, and the annular cup positioning unit 2233 separates and positions the annular cups containing the intercepted batteries. Then, the loading robot 222 starts, the first lifting cylinder drives the first gripper cylinder to descend to the height of the battery to be gripped, the first gripper cylinder moves to grip the battery to be injected with electrolyte, and then the first lifting cylinder drives the first gripper cylinder to rise to the preset height; then, the linear guide cylinder drives the first lifting cylinder and the first gripper cylinder to move horizontally as a whole until they are directly above the annular cup containing the battery on the circulating conveyor line 21. Then, the first lifting cylinder drives the first gripper cylinder to descend, precisely placing the battery to be injected into the annular cup. Afterward, the first gripper cylinder releases the battery, and the first lifting cylinder drives the first gripper cylinder to rise to a preset height. Finally, the linear guide cylinder drives the first lifting cylinder and the first gripper cylinder to return to their respective positions on the battery gripping and positioning assembly 221, ready for the next gripping operation. Simultaneously, the fourth cylinder of the annular cup stop unit 2232 drives the first stop component to retract, releasing the annular cup containing the battery to be injected, allowing it to be conveyed downstream along the circulating conveyor line 21, completing a single loading operation.

[0057] The sorting mechanism 23 includes a first scanning unit 231 disposed beside the circulating conveyor line 21, a sorting clamping assembly 232 disposed above the circulating conveyor line 21, and a first defective conveyor line 233 disposed beside the circulating conveyor line 21. A sorting blocking unit is provided beside the circulating conveyor line 21 for blocking and releasing batteries to be injected. When the battery to be injected moves with the circulating conveyor line 21 to the area directly below the sorting clamping assembly 232, it is blocked and positioned by the sorting blocking unit. The sorting clamping assembly 232 clamps the battery to be injected from the circulating conveyor line 21. The first scanning unit 231 simultaneously scans and identifies the clamped battery to be injected to distinguish between qualified and unqualified batteries. Subsequently, the sorting clamping assembly 232 puts the qualified battery back into the annular cup of the circulating conveyor line 21 and transfers the unqualified battery to the first defective conveyor line 233, thereby achieving the separation of qualified and unqualified batteries.

[0058] The sorting and clamping assembly 232 includes a second support frame 2321, a first slide plate 2322 slidably mounted on the second support frame 2321 via a slide rail, a sixth cylinder 2323 driving the first slide plate 2322 to move along the slide rail, a second lifting cylinder 2324 mounted on the first slide plate 2322, and a second gripper cylinder 2325 mounted at the end of the second lifting cylinder 2324. The number of second gripper cylinders 2325 can be designed according to the actual production cycle requirements. In this embodiment, six second gripper cylinders 2325 are set, that is, six batteries to be injected can be gripped simultaneously at one time, which effectively improves the sorting efficiency and adapts to the needs of batch production. In other embodiments, the number of second gripper cylinders 2325 can be flexibly adjusted, as long as it is adapted to the arrangement of the annular cups on the circulating conveyor line 21 and the production cycle.

[0059] The specific working process of the sorting mechanism 23 is as follows: The circulating conveyor line 21 continuously conveys the annular cups loaded with batteries to be injected. When the batteries to be injected move to a preset position below the sorting clamping assembly 232, the sorting blocking unit is activated to block and position the batteries to be injected and the corresponding annular cups, ensuring accurate positioning. Subsequently, the second lifting cylinder 2324 drives the second gripper cylinder 2325 to descend to the desired gripping height. The second gripper cylinder 2325 then clamps the batteries to be injected. After clamping, the second lifting cylinder 2324 drives the second gripper cylinder 2325 to rise, causing the batteries to be injected to detach from the annular cups, preventing them from being obstructed during barcode scanning. At this time, the first scanning unit 231 is activated to scan each battery in the clamped state. In the previous process, the QR code has been bound to the good product information of the batteries to be injected. By scanning the code, qualified and unqualified batteries to be injected can be quickly identified and distinguished. After identification, the second lifting cylinder 2324 drives the second gripper cylinder 2325 to descend, accurately placing the qualified batteries back into the corresponding annular cups. The second gripper cylinder 2325 then releases the qualified batteries. Next, the sixth cylinder 2323 drives the first sliding plate 2322 to move horizontally, causing the second lifting cylinder 2324 and the second gripper cylinder 2325 to move together above the first defective conveyor line 233. The second lifting cylinder 2324 drives the second gripper cylinder 2325 to descend, placing the unqualified batteries onto the first defective conveyor line 233, completing the transfer of unqualified batteries. Afterwards, all components reset, ready for the next sorting operation. Simultaneously, qualified batteries are conveyed to the alignment device 3 via the circulating conveyor line 21, specifically to the loading position of the alignment device 3. After the first gripping and transferring mechanism 34 of the alignment device 3 removes the batteries, the empty annular cup is conveyed along the circulating conveyor line 21 to the annular cup positioning component 223.

[0060] In addition, a separation baffle 211 is provided at the docking point of the circulating conveyor line 21 with the alignment device 3. The separation baffle 211 is located above the circulating conveyor line 21, and the distance between the separation baffle 211 and the surface of the circulating conveyor line 21 is greater than the height of the annular cup and less than the total height of the battery to be injected and the annular cup combined. When the annular cup containing the battery to be injected is conveyed to this point, the separation baffle 211 acts as a guide, guiding the annular cup containing the battery to be injected to the loading position of the alignment device 3. When the empty annular cup is conveyed to the separation baffle 211, it passes under the separation baffle 211 to be conveyed to the annular cup positioning component 223.

[0061] The first scanning unit 231 includes a scanning slide rail 2311, a scanning slider 2312 slidably mounted on the scanning slide rail 2311, a scanner 2313 mounted on the scanning slider 2312, and a first lead screw drive unit 2314 driven by the scanning slider 2312. During operation, the first lead screw drive unit 2314 drives the scanning slider 2312 to slide smoothly along the scanning slide rail 2311, thereby driving the scanner 2313 to move synchronously. This enables the scanning of each of the multiple batteries to be injected with electrolyte held by the sorting and clamping assembly 232, ensuring comprehensive scanning coverage and accurate identification, and preventing missed or incorrect scans.

[0062] In addition, the sorting mechanism 23 also includes a wiping assembly 234 disposed next to the sorting clamping assembly 232. The wiping assembly 234 includes a lifting slide plate 2341, a brush plate mounting plate 2342 mounted on the lifting slide plate 2341, a brush plate 2343 rotatably disposed on the brush plate mounting plate 2342, a brush plate drive motor 2344 for driving the brush plate 2343 to rotate, a seventh cylinder 2345 connected to the brush plate mounting plate 2342, and an eighth cylinder 2346 connected to the lifting slide plate 2341. The number and installation position of the brush discs 2343 correspond one-to-one with the second gripper cylinder 2325, ensuring that each clamped battery to be injected can be precisely wiped. During wiping, the seventh cylinder 2345 drives the brush disc mounting plate 2342 to move, positioning it below the battery to be injected. The eighth cylinder 2346 drives the lifting slide plate 2341 to rise, bringing the brush discs 2343 into contact with the bottom of the battery. The brush disc drive motor 2344 synchronously drives all the brush discs 2343 to rotate, achieving efficient and uniform wiping of the bottom of the battery. By adding the wiping component 234, dirt on the bottom of the battery to be injected can be wiped during the sorting process, preventing dirt from adhering to the battery surface and affecting the battery's appearance.

[0063] In this embodiment, the sorting and blocking unit can position the batteries to be injected, ensuring alignment between the batteries and the sorting clamping assembly 232, thus improving sorting accuracy. The first scanning unit 231 distinguishes between qualified and unqualified batteries by scanning codes, quickly identifying key information such as battery appearance defects, and achieving accurate screening of unqualified batteries. The sorting clamping assembly 232 can accurately clamp and transfer batteries, avoiding damage during the sorting process, and simultaneously transferring unqualified batteries to the first defective conveyor line 233, achieving effective separation of qualified and unqualified batteries, preventing unqualified batteries from being mixed into subsequent processes, further reducing electrolyte waste and production costs, and laying the foundation for improving the yield of subsequent injection processes. The entire sorting process is completed automatically without manual intervention, improving the automation level and production efficiency of the production line.

[0064] like Figures 9 to 13 As shown, the alignment device 3 includes a first frame 31, an adjacent alignment mechanism 32 and a first weighing mechanism 33, and a first clamping and transferring mechanism 34 and a second clamping and transferring mechanism 35 slidably mounted on the first frame 31 and located above the first weighing mechanism 33. The alignment mechanism 32 is used to adjust the angle position of the battery to be injected to ensure accurate alignment of the battery injection port; the first weighing mechanism 33 is used to weigh the battery before injection to provide basic data for subsequent injection volume control; the first clamping and transferring mechanism 34 is used to transfer qualified batteries to be injected from the circulation conveyor line 21 to the alignment mechanism 32, and to transfer batteries with adjusted angle position from the alignment mechanism 32 to the first weighing mechanism 33; the second clamping and transferring mechanism 35 is used to transfer the weighed batteries to be injected from the first weighing mechanism 33 to the battery tray 4412 of the injection device 4. By setting up the first clamping and transfer mechanism 34 and the second clamping and transfer mechanism 35, the battery is automatically transferred between the circulating conveyor line 21, the alignment mechanism 32, the first weighing mechanism 33, and the liquid injection device 4, thereby improving the transfer efficiency and ensuring the smooth connection of each process in the production line. The second clamping and transfer mechanism 35 can accurately transfer the weighed battery to the battery tray 4412 of the liquid injection device 4, ensuring that the angle and position of the battery do not shift during the transfer process, and ensuring the smooth progress of the subsequent liquid injection process.

[0065] The first gripping and transferring mechanism 34 includes a second sliding plate 341 slidably mounted on the first frame 31 via a slide rail, a second sliding plate drive unit 342 that drives the second sliding plate 341 to slide along the slide rail, a third lifting cylinder 343 mounted on the second sliding plate 341, and a third gripper cylinder 344 mounted at the output end of the third lifting cylinder 343. In this embodiment, twelve third gripper cylinders 344 are provided to meet the needs of batch alignment and weighing operations, and twelve batteries to be injected can be transferred simultaneously, improving work efficiency; in other embodiments, the number of third gripper cylinders 344 can be flexibly adjusted according to the production cycle, the structure of the alignment mechanism 32, and the first weighing mechanism 33.

[0066] The structure of the second gripping and transferring mechanism 35 is the same as that of the first gripping and transferring mechanism 34, and will not be described again here.

[0067] The alignment mechanism 32 includes a mounting plate 321, multiple alignment shafts 322 arranged in an array and rotatably mounted on the mounting plate 321, a lateral movement unit 323 located below the alignment shafts 322, at least one shaft drive member 324 mounted on the lateral movement unit 323 capable of driving the alignment shafts 322 to rotate, and at least one detection unit 325 for detecting the angular position of the batteries to be injected. One end of the alignment shaft 322 is provided with a loading slot 3221 for loading the batteries to be injected, and the other end can be driven to connect with the shaft drive member 324. The lateral movement unit 323 can synchronously drive the shaft drive member 324 and the detection unit 325 to move along the length direction of the mounting plate 321, realizing the sequential alignment of multiple groups of batteries. The number of alignment shafts 322 is the same as the number of the third gripper cylinders 344, that is, twelve are set to ensure that the twelve batteries to be injected transferred by the first gripping and transfer mechanism 34 in a single operation can be simultaneously placed on the alignment shafts 322, realizing batch alignment.

[0068] Specifically, the transverse movement unit 323 includes a fixed plate 3231, a sliding carrier plate 3232 slidably mounted on the fixed plate 3231 via a slide rail, and a second lead screw drive unit 3233 drivenly connected to the sliding carrier plate 3232. A sliding slide rail is provided on the sliding carrier plate 3232, and a rotating shaft drive component carrier plate 3234 is slidably mounted on the sliding slide rail. The rotating shaft drive component carrier plate 3234 is connected to a ninth cylinder 3235. The rotating shaft drive component 324 is mounted on the rotating shaft drive component carrier plate 3234. Gears meshing with each other are respectively provided at the end of the rotating shaft drive component 324 and on the correction rotating shaft 322. The ninth cylinder 3235 can drive the rotating shaft drive component carrier plate 3234 to move along the sliding slide rail, so that the gear at the end of the rotating shaft drive component 324 meshes with or separates from the gear sleeved on the correction rotating shaft 322, realizing the linkage or disconnection of the rotating shaft drive component 324 and the correction rotating shaft 322. The rotating shaft drive 324 uses a servo motor, enabling precise angle adjustment and ensuring alignment accuracy. The detection unit 325 is fixed to the sliding carrier plate 3232 via a mounting bracket. The installation position of the detection unit 325 is higher than the loading slot 3221 to avoid obstructing the batteries to be filled, ensuring accurate detection. The detection unit 325 uses a CCD camera to quickly identify the angular position of the battery cap. The number of detection units 325 and rotating shaft drive 324 is the same. In this embodiment, four detection units 325 and four rotating shaft drive 324 are each provided, allowing simultaneous angle alignment of four batteries to be filled, balancing work efficiency and equipment cost.

[0069] The specific working process of the alignment mechanism 32 is as follows: The third gripper cylinder 344 of the first clamping and transferring mechanism 34 clamps the battery to be injected and accurately places it in the loading slot 3221 of the alignment shaft 322. The loading slot 3221 performs preliminary positioning of the battery. Subsequently, the detection unit 325 identifies whether the cap of the battery to be injected is in the preset position by taking a picture. If it is not in the preset position, it accurately determines the deflection angle and feeds back a signal. Next, the ninth cylinder 3235 drives the rotating shaft drive plate 3234 to move, so that the gear at the end of the rotating shaft drive 324 meshes with the gear sleeved on the correction rotating shaft 322. The rotating shaft drive 324 starts and drives the correction rotating shaft 322 to rotate according to the deflection angle fed back by the detection unit 325, thereby driving the battery to be injected to adjust its angle. After the adjustment is completed, the detection unit 325 takes pictures again until the battery cap is in the preset position, completing the angle alignment of the battery. Subsequently, the second lead screw drive unit 3233 drives the sliding plate 3232 to move along the length direction of the mounting plate 321, driving the rotating shaft drive 324 and the detection unit 325 to move to the next group of batteries to be injected. The above actions are repeated to complete the angle alignment operation of all batteries to be injected.

[0070] The loading slot 3221 on the calibration shaft 322 can effectively position the battery, preventing it from shifting during the alignment process and ensuring alignment accuracy. The detection unit 325 can accurately detect the angular position of the battery, providing a precise angle adjustment basis for the shaft drive 324, achieving accurate correction of the battery angle, preventing interference between the cap of the battery filling port and the filling nozzle of the filling device 4, and achieving accurate filling alignment. The transverse unit 323 can synchronously drive the shaft drive 324 and the detection unit 325 to move, realizing the sequential driving and detection of multiple calibration shafts 322. This eliminates the need to set up multiple sets of drive and detection components separately, effectively reducing equipment manufacturing costs and improving batch operation efficiency.

[0071] The first weighing mechanism 33 includes multiple electronic scales 331 and a weighing clamping unit 332 located above the electronic scales 331. A second scanning unit 36 ​​is also provided on the side of the first weighing mechanism 33. The structure and movement of the second scanning unit 36 ​​are the same as those of the first scanning unit 331, and will not be described in detail here. The number of electronic scales 331 is the same as the number of calibration shafts 322, that is, twelve. The batteries to be injected with liquid are synchronously transferred to each electronic scale 331 by the first clamping and transfer mechanism 34, and the weighing clamping unit 332 clamps the batteries to be injected with liquid simultaneously to prevent the batteries from shaking during the weighing process and to ensure accurate weighing data, thereby measuring the weight of each battery before liquid injection. After weighing, the second clamping and transfer mechanism 35 is activated to clamp the battery to be injected on the first weighing mechanism 33 and move it to the scanning position of the second scanning unit 36. The second scanning unit 36 ​​scans the QR code of each battery to be injected and binds the QR code of each battery to be injected with the weight information before injection, so as to facilitate subsequent traceability of whether the injection volume meets the standard. After binding, the second clamping and transfer mechanism 35 transfers the battery to be injected to the battery tray 4412 of the injection device 4, completing the alignment and weighing process and connecting to the subsequent injection operation.

[0072] like Figures 14 to 20 As shown, the liquid injection device 4 includes a vacuum liquid injection mechanism 41, multiple atmospheric pressure liquid injection mechanisms 42, multiple vacuum settling mechanisms 43, and a tray translation mechanism 44 arranged sequentially. The vacuum liquid injection mechanism 41, atmospheric pressure liquid injection mechanism 42, and vacuum settling mechanism 43 are all located above the tray translation mechanism 44. A vacuum settling mechanism 43 is arranged adjacent to the downstream of the vacuum liquid injection mechanism 41, and a vacuum settling mechanism 43 is arranged adjacent to the downstream of the atmospheric pressure liquid injection mechanism 42. This forms the arrangement of vacuum liquid injection mechanism 41-vacuum settling mechanism 43-atmospheric pressure liquid injection mechanism 42-vacuum settling mechanism 43-atmospheric pressure liquid injection mechanism 42-vacuum settling mechanism 43. The tray translation mechanism 44 is used to synchronously translate the battery tray 4412 at the vacuum liquid injection mechanism 41, multiple atmospheric pressure liquid injection mechanisms 42, and vacuum settling mechanism 43 along the conveying direction by one station distance. The batteries to be injected in the battery tray 4412 pass through the vacuum liquid injection mechanism 41 and each atmospheric pressure liquid injection mechanism 42 in sequence to complete the liquid injection. It should be noted that the number of atmospheric pressure injection mechanisms 42 is set according to actual needs, and the number of vacuum settling mechanisms 43 is set according to the production cycle and the required settling time. In this embodiment, five atmospheric pressure injection mechanisms 42 are set, and seven vacuum settling mechanisms 43 are set, with the last two vacuum settling mechanisms 43 arranged adjacent to each other.

[0073] The pallet translation mechanism 44 includes a pallet translation line 441 and a pallet return line 442 located below the pallet translation line 441. The pallet translation line 441 synchronously translates the battery pallets 4412 at the vacuum liquid injection mechanism 41, multiple atmospheric pressure liquid injection mechanisms 42 and vacuum settling mechanism 43 along the conveying direction by one station distance. The pallet return line 442 is used to return empty battery pallets 4412.

[0074] The tray translation line 441 includes a support line 4411 that docks with the alignment device 3. Battery trays 4412 are arranged closely and sequentially on the support line 4411. The support line 4411, according to its corresponding positions with the vacuum injection mechanism 41, the atmospheric pressure injection mechanism 42, and the vacuum settling mechanism 43, can be divided into a vacuum injection position 4413 below the vacuum injection mechanism 41, an atmospheric pressure injection position 4415 below the atmospheric pressure injection mechanism 42, an injection settling position 4414 below the vacuum settling mechanism 43, a first battery tray position 4416 docking with the alignment device 3 and located at one end of the line, and a second battery tray position 4417 located at the other end of the line where all injections have been completed. The battery trays 4412 are arranged sequentially and closely on the first battery tray position 4416, the vacuum injection position 4413, the injection settling position 4414, and the atmospheric pressure injection position 4415. The first battery tray position 4416 is a battery tray 4412 that holds batteries to be injected with electrolyte. The second clamping and transferring mechanism 35 transfers the batteries to be injected with electrolyte, which have been weighed on the first weighing mechanism 33, to the battery tray 4412 in the first battery tray position 4416. One battery tray 4412 can hold sixty batteries.

[0075] A pusher unit 443 is provided next to the first battery tray position 4416. When the battery tray 4412 of the first battery tray position 4416 is full of batteries to be injected, the pusher unit 443 pushes the battery tray 4412 on the first battery tray position 4416 to move, which can drive the battery trays 4412 on the vacuum injection position 4413, the injection stationary position 4414 and the atmospheric pressure injection position 4415 to move synchronously, so that the battery tray 4412 that has completed all the injection processes can be moved to the second battery tray position 4417.

[0076] The push unit 443 includes a push plate spanning across the tray translation line 441, two first displacement adjusting screws, and a servo motor. The two first displacement adjusting screws are rotatably arranged on both sides of the width direction of the tray translation line 441. The two ends of the push plate are threadedly connected to the two first displacement adjusting screws, and the two first displacement adjusting screws are connected by a synchronous belt. The servo motor is driven by one of the first displacement adjusting screws. By driving the first displacement adjusting screw to rotate, the push plate is moved along the length direction of the tray translation line 441, thereby realizing the push operation on the battery tray 4412.

[0077] The pallet return line 442 uses a chain conveyor, with both ends of the battery pallet 4412 overlapping the chain to facilitate movement. A pallet transfer mechanism 444 is provided at the first battery pallet position 4416 and the second battery pallet position 4417. The pallet transfer mechanism 444 at the first battery pallet position 4416 transfers empty battery pallets 4412 from the pallet return line 442 to the first battery pallet position 4416, and the pallet transfer mechanism 444 at the second battery pallet position 4417 transfers empty battery pallets 4412 from the second battery pallet position 4417 to the pallet return line 442. The pallet transfer mechanism 444 employs a cylinder lifting mechanism, i.e., it uses a pallet carrier plate, which is driven by a cylinder to move between the pallet return line 442 and the pallet translation line 441.

[0078] In this embodiment, the support line 4411 is connected to the alignment device 3, which facilitates the second clamping and transfer mechanism 35 to accurately place the weighed batteries into the battery tray 4412, ensuring the accuracy of battery loading. The battery trays 4412 are arranged closely in sequence, which can maximize the use of the space of the support line 4411, improve the batch processing capacity of the liquid injection process, and improve production efficiency. The push unit 443 drives all trays to move synchronously by pushing the tray at the first battery tray position 4416. The structure is simple and the operation is reliable. There is no need to set up a separate drive component for each tray, which reduces the equipment manufacturing cost and maintenance cost. The synchronous movement ensures that the distance moved by each tray is consistent, avoiding liquid injection misalignment caused by tray offset, and ensuring the stability and accuracy of the liquid injection process. The trays that have completed all liquid injection are moved to the second battery tray position 4417, which facilitates the unloading of subsequent batteries and the return of empty trays, realizing a smooth connection between the liquid injection process and the subsequent unloading process. The tray translation line 441 enables the synchronous translation of multiple battery trays 4412, ensuring that the batteries in each battery tray 4412 can pass through the vacuum liquid injection mechanism 41 and each atmospheric pressure liquid injection mechanism 42 in sequence to achieve staged liquid injection, avoiding electrolyte overflow caused by excessive liquid injection at one time, while ensuring the uniformity of liquid injection, improving the liquid injection accuracy and yield. The tray return line 442 can return the empty tray after the batteries have been removed from the liquid injection to the initial station, realizing the recycling of battery trays 4412. The tray translation line 441 and the tray return line 442 work together to form a circular flow of trays, ensuring the continuous operation of the liquid injection process and improving the production efficiency and continuity of the production line.

[0079] The vacuum injection mechanism 41 includes a third support frame 411, a vacuum injection tank 412 slidably mounted on the third support frame 411 in a vertical direction, a fourth lifting cylinder 413 drivenly connected to the vacuum injection tank 412, and an injection needle unit 414. The vacuum injection tank 412 is equipped with injection cups 4121, the number of which is the same as the number of battery slots on the battery tray 4412, i.e., one injection cup 4121 corresponds to one battery to be injected. When the battery tray 4412 moves below the vacuum injection tank 412, the vacuum injection tank 412 descends and locks onto the battery tray 4412, then a vacuum is drawn, and the injection needle unit 414 sequentially injects electrolyte into the injection cups 4121.

[0080] The injection needle unit 414 includes a first injection sliding plate 4141 slidably mounted on a third support frame 411, a first injection fixing plate 4142 slidably mounted on the first injection sliding plate 4141, a plurality of first injection needles 4143 mounted on the first injection fixing plate 4142, a fifth lifting cylinder 4144 connected to the first injection fixing plate 4142, a third lead screw drive unit 4145 connected to the first injection fixing plate 4142, and a fourth lead screw drive unit 4146 connected to the first injection sliding plate 4141. The fourth lead screw drive unit 4146 drives the first injection sliding plate 4141 to move along the length direction of the supporting line 4411, and the third lead screw drive unit 4145 drives the first injection fixing plate 4142 to move along the width direction of the supporting line 4411, thereby driving the first injection needles 4143 to accurately align with the injection cup 4121. In this embodiment, four first injection needles 4143 are provided.

[0081] The vacuum settling mechanism 43 includes a fourth support frame 431, a vacuum box 432 that is slidably mounted on the fourth support frame 431 in a vertical direction, and a sixth lifting cylinder 433 that is driven and connected to the vacuum box 432. When the battery tray 4412 moves to the bottom of the vacuum box 432, the vacuum box 432 descends and locks onto the battery tray 4412, and then a vacuum is drawn to make the inside of the battery a vacuum state, so that the electrolyte can fully penetrate into the gap between the battery electrodes and avoid the generation of air bubbles that affect the quality of electrolyte injection. After a preset settling time, the vacuum box 432 depressurizes and rises to complete the vacuum settling operation.

[0082] The atmospheric pressure injection mechanism 42 includes an injection support plate 421 mounted between two fourth support frames 431, a second injection sliding plate 422 slidably mounted on the injection support plate 421 along the length of the support line 4411, a third injection sliding plate 423 slidably mounted on the second injection sliding plate 422 along the width of the support line 4411, a seventh lifting cylinder 424 mounted on the third injection sliding plate 423, a second injection fixing plate 425 connected to the seventh lifting cylinder 424, and a plurality of second injection needles 426 mounted on the second injection fixing plate 425.

[0083] A second displacement adjusting screw 427 is rotatably mounted on the second injection sliding plate 422 along the width direction of the supporting line 4411. The third injection sliding plate 423 is threadedly connected to the second displacement adjusting screw 427. A first bevel gear 4271 is mounted at one end of the second displacement adjusting screw 427. A power guide rod 428 is rotatably mounted on the second injection sliding plate 422. A second bevel gear 4281 meshes with the first bevel gear 4271 on the power guide rod 428. When the power guide rod 428 rotates, the second displacement adjusting screw 427 rotates through the meshing transmission between the second bevel gear 4281 and the first bevel gear 4271, thereby driving the third injection sliding plate 423 to move along the width direction of the supporting line 4411. When the power guide rod 428 moves along the length direction of the supporting line 4411, it can drive the second injection sliding plate 422 to move synchronously along the length direction of the supporting line 4411, realizing bidirectional position adjustment of the second injection needle 426.

[0084] All atmospheric pressure injection mechanisms 42 are synchronously driven by a power guide rod 428. The power guide rod 428 is rotatably mounted on the second injection sliding plate 422 of all atmospheric pressure injection mechanisms 42 and is connected to the first bevel gear 4271 on the second displacement adjusting screw 427 of all atmospheric pressure injection mechanisms 42 through multiple second bevel gears 4281. On the injection support plate 421 of one of the atmospheric pressure injection mechanisms 42, a third displacement adjusting screw 429 is rotatably mounted along the length direction of the support line 4411, and a servo motor is driven and connected to the third displacement adjusting screw 429. The servo motor is used to drive the third displacement adjusting screw 429 to rotate. The second injection sliding plate 422 is threadedly connected to the third displacement adjusting screw 429. A servo motor is mounted on the second injection sliding plate 422 and driven and connected to the power guide rod 428 to drive the power guide rod 428 to rotate. During operation, the servo motor driven and connected to the third displacement adjusting screw 429 drives the third displacement adjusting screw 429 to rotate, which drives the second injection sliding plate 422 of the atmospheric pressure injection mechanism 42 to move along the length direction of the support line 4411, thereby driving the power guide rod 428 to move synchronously along the length direction of the support line 4411. The power guide rod 428 drives the second injection sliding plates 422 of other atmospheric pressure injection mechanisms 42 to move along the length direction of the support line 4411. A servo motor connected to the power guide rod 428 drives the power guide rod 428 to rotate. Through the transmission of bevel gear and lead screw, the third injection sliding plate 423 of all atmospheric pressure injection mechanisms 42 moves synchronously along the width direction of the support line 4411, so as to realize the synchronous alignment of the second injection needle 426 of all atmospheric pressure injection mechanisms 42 and ensure the consistency of batch injection.

[0085] The working process of the liquid injection device 4 is as follows: First, the second clamping and transferring mechanism 35 accurately transfers the aligned and weighed batteries to be injected into the battery tray 4412 of the first battery tray position 4416. When the battery tray 4412 is full of batteries to be injected, the servo motor of the push unit 443 starts, drives the first shift adjustment screw to rotate, drives the push plate to move, pushes the battery tray 4412 of the first battery tray position 4416, and then drives all the battery trays 4412 on the support line 4411 to move synchronously one station, so that the battery tray 4412 full of batteries to be injected moves to the vacuum injection position 4413. The battery trays 4412 of the original vacuum injection position 4413, the injection static position 4414, and the atmospheric pressure injection position 4415 move to the next station in sequence. The battery tray 4412 that has completed all the injection moves to the second battery tray position 4417. Subsequently, the vacuum injection mechanism 41 is activated, and the fourth lifting cylinder 413 drives the vacuum injection tank 412 to descend and lock onto the battery tray 4412. The vacuum system is activated to draw a vacuum. At the same time, the fourth lead screw drive unit 4146 and the third lead screw drive unit 4145 of the injection needle unit 414 drive the first injection sliding plate 4141 and the first injection fixing plate 4142 to move, so that the first injection needle 4143 is aligned with the injection cup 4121 and injects a preset amount of electrolyte into the injection cup 4121. After the injection is completed, the vacuum injection tank 412 is depressurized and rises. The push unit 443 is activated again to push the battery tray 4412 to the next injection stationary position 4414. The vacuum settling mechanism 43 is activated, and the sixth lifting cylinder 433 drives the vacuum box 432 to descend and lock, evacuating and settling for a preset time. After vacuum settling is completed, the battery tray 4412 is pushed to the atmospheric pressure liquid injection position 4415. The servo motor of the atmospheric pressure liquid injection mechanism 42 is activated, driving the second liquid injection sliding plate 422 and the third liquid injection sliding plate 423 to move, so that the second liquid injection needle 426 is aligned with the battery liquid injection port. The seventh lifting cylinder 424 drives the second liquid injection needle 426 to descend and inject electrolyte. After the liquid injection is completed, it is reset, and the battery tray 4412 is pushed to the next liquid injection settling position 4414 for settling. The above process is repeated in sequence until the battery completes all vacuum liquid injection, atmospheric pressure liquid injection and vacuum settling processes, and finally moves to the second battery tray position 4417 to complete the liquid injection operation. At the same time, the pallet transfer mechanism 444 of the second battery pallet position 4417 transfers the empty pallet to the pallet return line 442, and returns it to the first battery pallet position 4416. The pallet transfer mechanism 444 of the first battery pallet position 4416 then transfers it to the workstation, realizing the recycling of the pallet.

[0086] like Figure 21 and Figure 22As shown, the unloading device 5 is connected to the liquid injection device 4, and is used to complete the secondary weighing, barcode scanning and binding, capping, diversion of defective batteries and liquid replenishment of batteries after liquid injection. This realizes automated unloading and defective product handling of batteries after liquid injection, connects to subsequent processes, and ensures closed-loop operation of the production line. The unloading device 5 includes a second weighing mechanism 51 and a capping mechanism 52 arranged adjacent to each other, a third clamping and transfer mechanism 53 and a fourth clamping and transfer mechanism 54 located above the second weighing mechanism 51 and the capping mechanism 52, an unloading conveyor line 55, a defective liquid replenishment mechanism 56, and a second defective conveyor line 58.

[0087] The third clamping and transfer mechanism 53 is used to transfer the battery that has finally completed liquid injection from the battery tray 4412 of the second battery tray position 4417 of the liquid injection device 4 to the second weighing mechanism 51; the second weighing mechanism 51 is used to weigh the battery after liquid injection and compare it with the weighing data of the first weighing mechanism 33 before liquid injection to determine whether the liquid injection amount of the battery is qualified; the fourth clamping and transfer mechanism 54 is used to transfer the qualified batteries on the second weighing mechanism 51 to the capping mechanism 52, and at the same time transfer the unqualified batteries to the second defective conveying line 58; the capping mechanism 52 is used to cap and seal the qualified batteries to prevent electrolyte leakage and impurities from entering; the unloading conveying line 55 is used to transfer the capped batteries on the capping mechanism 52 to the subsequent finished product processing process; the second defective conveying line 58 is used to convey the unqualified batteries to the defective liquid replenishment mechanism 56, and the defective liquid replenishment mechanism 56 is used to accurately replenish the unqualified batteries to improve the battery qualification rate.

[0088] It should be noted that the third clamping and transfer mechanism 53 and the fourth clamping and transfer mechanism 54 have the same structure as the first clamping and transfer mechanism 34 in the alignment device 3, and the second weighing mechanism 51 has the same structure as the first weighing mechanism 33 in the alignment device 3. Both include multiple electronic scales 331 and a weighing clamping unit 332 located above the electronic scales 331. The number of electronic scales 331 is adapted to the number of batteries in the battery tray 4412 to ensure that multiple batteries can be weighed simultaneously in one go. A third scanning unit is also provided on the side of the second weighing mechanism 51. The third scanning unit has the same structure and movement mode as the first scanning unit 231 in the sorting mechanism 23. The specific structure will not be described in detail here.

[0089] During weighing, the third clamping and transfer mechanism 53 precisely transfers the batteries that have completed liquid injection from the battery tray 4412 to the electronic scale 331 of the second weighing mechanism 51. The weighing clamping unit 332 simultaneously clamps the batteries to prevent battery shaking from causing weighing data deviation. The electronic scale 331 accurately weighs the weight of the batteries after liquid injection and transmits the data to the control system in real time. After weighing, the fourth clamping and transfer mechanism 54 is activated, clamping the batteries on the second weighing mechanism 51 and moving them to the scanning position of the third scanning unit. The third scanning unit scans the QR codes of each battery one by one, binding the QR code of each battery with the weight information after liquid injection. The control system combines the initial weight data of the first weighing mechanism 33 before liquid injection to calculate whether the liquid injection amount meets the preset standard, thereby determining whether the liquid injection of the battery is qualified. Batteries that have qualified liquid injection are transferred by the fourth clamping and transfer mechanism 54 to the capping mechanism 52, while batteries that have not qualified liquid injection are transferred by the fourth clamping and transfer mechanism 54 to the second defective conveyor line 58.

[0090] The defective electrolyte replenishment mechanism 56 includes a replenishment positioning track 561, an electronic scale 65, and a replenishment needle 562. The second defective conveyor line 58 is perpendicular to the replenishment positioning track 561. When the second defective conveyor line 58 transports the defective battery to the inlet position of the replenishment positioning track 561, a cylinder pusher pushes the defective battery into the replenishment positioning track 561, and a cylinder positioning component on the side of the replenishment positioning track 561 clamps and positions the defective battery. The replenishment needle 562 automatically aligns with the electrolyte inlet of the defective battery. The control system accurately calculates the required replenishment amount based on the initial weight of the first weighing mechanism 33 and the actual weight of the second weighing mechanism 51, and controls the replenishment needle 562 to inject the corresponding amount of electrolyte into the battery. The electronic scale 65 is located below the liquid replenishment positioning track 561. When the defective battery is in the liquid replenishment positioning track 561, it is placed on the electronic scale 65. During the liquid replenishment process, the electronic scale 65 provides real-time feedback of weight data. After the liquid replenishment is completed, the electronic scale 65 weighs the battery again to confirm that it has reached the preset standard and completes the liquid replenishment operation.

[0091] For unqualified batteries with insufficient electrolyte volume detected by the second weighing mechanism 51, precise electrolyte replenishment can be performed by the defective electrolyte replenishment mechanism 56, eliminating the need for direct rejection, reducing battery waste, and lowering production costs. The defective electrolyte replenishment mechanism 56 can calculate the required electrolyte volume based on the initial weight of the first weighing mechanism 33 and the actual weight of the second weighing mechanism 51, achieving precise electrolyte replenishment, ensuring that the electrolyte volume of the replenished battery meets the standard, and improving the battery pass rate.

[0092] The cap-closing mechanism 52 includes a cap-closing support positioning groove and a pressing cap-closing unit disposed on the cap-closing support track. After the fourth clamping and transferring mechanism 54 transfers the qualified battery into the cap-closing support positioning groove, the pressing cap-closing unit presses the battery cap tightly onto the injection port, completing the cap-closing and sealing. It should be noted that the pressing cap-closing unit can use existing technology, and will not be described in detail here. After the cap is closed, the battery is pushed into the unloading conveyor line 55. The unloading conveyor line 55 runs at a constant speed, sending the battery to the unloading mechanism 57 for clamping and unloading. The unloading mechanism 57 has the same structure as the loading mechanism 22, and will not be described in detail here.

[0093] like Figure 23 As shown, the electrolyte injection production line also includes a centralized electrolyte supply device 6, which provides a unified, clean, and precise supply of electrolyte to the vacuum injection mechanism 41, the atmospheric pressure injection mechanism 42, and the defective electrolyte replenishment mechanism 56 of the feeding device 5. This enables centralized control of the electrolyte, ensuring injection quality and continuous operation of the production line. The centralized electrolyte supply device 6 includes an electrolyte tank 61, a storage tank 62, an iron removal filter pipeline 63 connecting the electrolyte tank 61 and the storage tank 62, and a fourth scanning unit 64. The storage tank 62 is connected to the vacuum injection mechanism 41, the atmospheric pressure injection mechanism 42, and the defective electrolyte replenishment mechanism 56 via a delivery pipeline. Each pipeline is equipped with a pneumatic control valve, which is linked to the overall pneumatic system for unified control, used to control the flow and interruption of electrolyte supply. The fourth scanning unit 64 is used to scan the QR code on the electrolyte tank 61 to confirm that the electrolyte model matches the battery to be injected, avoiding model confusion that could damage the battery.

[0094] Electrolyte tank 61 is placed on a dedicated electronic scale 65, which is equipped with a weight sensor to collect the weight data of the electrolyte in the electrolyte tank 61 in real time and transmit the data to the control system. This allows staff to monitor the remaining electrolyte level in real time, replenish the electrolyte in a timely manner, and avoid production stoppages due to insufficient electrolyte. Storage tank 62 adopts a double-layer structure design, including an upper storage tank 62 and a lower storage tank 62. The upper storage tank 62 is connected to the electrolyte tank 61 via an iron removal filter pipe 63. The lower storage tank 62 is connected to the injection cup 4121 of the vacuum injection mechanism 41, the second injection needle 426 of the atmospheric pressure injection mechanism 42, and the replenishment needle 562 of the defective replenishment mechanism 56 via branch pipes, achieving centralized electrolyte supply.

[0095] The flow of electrolyte is precisely controlled by a pneumatic valve. When the electrolyte level in the storage tank 62 is lower than the preset value, the control system controls the pneumatic valve to open, and the electrolyte flows out from the electrolyte tank 61. It first enters the iron removal filter pipeline 63, which is equipped with an iron removal filter element and a precision filter element. This allows for dual iron removal and filtration of the electrolyte, effectively removing iron impurities and other small particles from the electrolyte. This prevents impurities from entering the battery and affecting its electrochemical performance, cycle life, and safety, thereby further improving the quality of lithium battery products. After iron removal filtration, the electrolyte enters the upper storage tank 62 for static defoaming treatment to remove dissolved air bubbles. This prevents air bubbles from entering the battery during the injection process and creating voids that could affect the uniformity of injection and battery performance. After defoaming, the electrolyte automatically flows into the lower storage tank 62, which is equipped with a level sensor to monitor the electrolyte level in real time, ensuring a stable and sufficient supply of electrolyte to each injection mechanism.

[0096] A centralized electrolyte supply device 6 is installed to provide centralized electrolyte supply to all electrolyte-related mechanisms. Compared with decentralized supply, this simplifies pipeline layout, reduces the risk of pipeline leakage, lowers equipment maintenance costs, and facilitates unified management of electrolyte supply and usage, accurate statistics of electrolyte consumption, and avoids electrolyte waste. The iron removal and filtration pipeline 63 removes iron and filters the electrolyte, ensuring its cleanliness. The fourth scanning unit 64 scans the QR code on the electrolyte tank 61 to confirm that the electrolyte model matches the battery to be injected, avoiding battery damage and reduced injection yield due to incorrect electrolyte model, ensuring the accuracy and safety of the injection process. The storage tank 62 stores a certain amount of electrolyte, acting as a buffer to prevent production stoppages due to electrolyte supply interruptions, ensuring the continuous and stable operation of the production line.

[0097] It should be noted that the supercapacitor battery electrolyte filling production line also includes a control system, and the coordinated operation of all devices in the entire production line is controlled by the control system. The control system can use existing technologies, such as PLC control systems, embedded control systems, or industrial computers.

[0098] In summary, this embodiment forms a complete automated electrolyte injection production line by sequentially arranging the feeding device 2, alignment device 3, electrolyte injection device 4, and unloading device 5 along the battery conveying direction. This achieves fully automated control of the entire process from feeding the batteries to unloading them after electrolyte injection, significantly improving production efficiency. The feeding device 2 continuously conveys the batteries to be injected via the circulating conveyor line 21. With the help of the side sorting mechanism 23, defective batteries can be quickly sorted and removed before entering subsequent processes, avoiding the occupation of equipment resources by defective batteries, reducing electrolyte waste, and laying the foundation for subsequent high-precision electrolyte injection, effectively improving the electrolyte injection pass rate. A dedicated alignment mechanism 32 precisely adjusts the angle and position of the battery to be injected, avoiding interference between the cap of the battery injection port and the injection nozzle of the injection device 4, ensuring accurate alignment and preventing injection deviation. The design employs a vacuum injection mechanism 41 and multiple atmospheric pressure injection mechanisms 42 working in sequence, combined with a tray translation mechanism 44 to achieve continuous switching of battery stations. This allows the battery to first undergo vacuum injection for rapid electrolyte penetration, followed by multiple atmospheric pressure injection stages for precise replenishment and deep wetting, effectively solving problems such as insufficient wetting, residual air bubbles, and injection volume deviation caused by a single injection method. Simultaneously, the multi-station synchronous translation design enables multi-stage continuous injection of the battery, significantly improving injection efficiency. The first weighing mechanism 33 in the alignment device 3 weighs qualified batteries before injection, providing benchmark data for precise control of the injection volume. The second weighing mechanism 51 in the unloading device 5 performs a second weighing of the batteries after injection, quickly screening out products with unqualified injection volumes, preventing unqualified batteries from entering subsequent production processes, and improving the yield of finished lithium batteries.

[0099] In the description of this invention, it should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" 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 invention 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 limiting this invention.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0101] 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 variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A supercapacitor battery electrolyte injection production line, characterized in that, It includes a machine base, a feeding device, an alignment device, a liquid injection device, and a discharging device arranged sequentially on the machine base along the battery conveying direction; The feeding device includes a circulating conveyor line and a sorting mechanism located beside the circulating conveyor line. The sorting mechanism is used to sort out unqualified batteries to be injected from the circulating conveyor line, and qualified batteries to be injected are transported to the alignment device through the circulating conveyor line. The alignment device includes an alignment mechanism and a first weighing mechanism arranged adjacent to each other. The alignment mechanism is used to adjust the angular position of the battery to be injected, and the first weighing mechanism is used to weigh the battery to be injected. The liquid injection device includes a vacuum liquid injection mechanism and multiple atmospheric pressure liquid injection mechanisms arranged in sequence, and a tray translation mechanism; the tray translation mechanism is used to synchronously translate the battery trays of the vacuum liquid injection mechanism and the multiple atmospheric pressure liquid injection mechanisms along the conveying direction by one station distance, and the batteries to be injected in the battery trays pass through the vacuum liquid injection mechanism and each atmospheric pressure liquid injection mechanism in sequence to complete the liquid injection; The feeding device includes a second weighing mechanism and a capping mechanism arranged adjacent to each other, and a feeding conveyor line. The second weighing mechanism is used to weigh the battery after liquid injection. The capping mechanism is used to cap the batteries that have passed the weighing test. The feeding conveyor line is used to transfer the capped batteries from the capping mechanism.

2. The supercapacitor battery electrolyte injection production line according to claim 1, characterized in that, The sorting mechanism includes a first scanning unit disposed beside the circulating conveyor line, a sorting clamping assembly disposed above the circulating conveyor line, and a first defective conveyor line disposed beside the circulating conveyor line. A sorting blocking unit is provided beside the circulating conveyor line to block and release batteries to be injected. When a battery to be injected moves to below the sorting clamping assembly, it is blocked by the sorting blocking unit. The sorting clamping assembly clamps the battery to be injected from the circulating conveyor line. The first scanning unit scans the clamped battery to be injected to distinguish between qualified and unqualified batteries. The sorting clamping assembly puts the qualified batteries back onto the circulating conveyor line and transfers the unqualified batteries to the first defective conveyor line.

3. The supercapacitor battery electrolyte injection production line according to claim 2, characterized in that, The sorting mechanism also includes a wiping component disposed next to the sorting clamping assembly, the wiping component being used to wipe the battery to be injected held by the sorting clamping assembly.

4. The supercapacitor battery electrolyte injection production line according to claim 1, characterized in that, The alignment mechanism includes a mounting plate, multiple alignment shafts arranged in an array and rotatably mounted on the mounting plate, a lateral movement unit disposed below the alignment shafts, at least one shaft drive unit disposed on the lateral movement unit that can drive the alignment shafts to rotate, and at least one detection unit for detecting the angular position of the battery to be injected; one end of the alignment shaft is provided with a loading groove for loading the battery to be injected, and the other end can be driven to connect with the shaft drive unit; the lateral movement unit can synchronously drive the shaft drive unit and the detection unit to move along the length direction of the mounting plate.

5. The supercapacitor battery electrolyte injection production line according to claim 1, characterized in that, The alignment device further includes a first clamping and transfer mechanism and a second clamping and transfer mechanism located above the alignment mechanism and the first weighing mechanism; the first clamping and transfer mechanism is used to transfer qualified batteries to be injected from the circulating conveyor line to the alignment mechanism and to transfer batteries to be injected after angular position adjustment from the alignment mechanism to the first weighing mechanism; the second clamping and transfer mechanism is used to transfer the weighed batteries to be injected from the first weighing mechanism to the battery tray of the injection device.

6. The supercapacitor battery electrolyte injection production line according to claim 1, characterized in that, The pallet translation mechanism includes a pallet translation line and a pallet return line located below the pallet translation line. The pallet translation line synchronously translates the battery pallets of the vacuum liquid injection mechanism and multiple atmospheric pressure liquid injection mechanisms along the conveying direction by one station distance. The pallet return line is used to return empty battery pallets to the pallet translation line.

7. The supercapacitor battery electrolyte injection production line according to claim 6, characterized in that, The tray translation line includes a support line that docks with the alignment device. Battery trays are arranged closely and sequentially on the support line. The support line includes a first battery tray position at one end of the line, a second battery tray position at the other end of the line that has completed all liquid filling, and a pushing unit located next to the first battery tray position. The pushing unit pushes the battery tray at the first battery tray position to move, which can drive other battery trays on the support line to move synchronously, so that the battery tray loaded with the battery that has completed all liquid filling processes can move to the second battery tray position.

8. The supercapacitor battery electrolyte injection production line according to claim 7, characterized in that, The first battery tray position and the second battery tray position are respectively provided with a tray transfer mechanism. The tray transfer mechanism of the first battery tray position is used to transfer empty battery trays on the tray return line to the first battery tray position, and the tray transfer mechanism of the second battery tray position is used to transfer empty battery trays of the second battery tray position to the tray return line.

9. The supercapacitor battery electrolyte injection production line according to claim 1, characterized in that, The feeding device also includes a defective electrolyte replenishment mechanism, which is used to replenish electrolyte in batteries that fail to meet the weight requirements.

10. The supercapacitor battery electrolyte injection production line according to claim 9, characterized in that, It also includes a centralized liquid filling device for the whole machine, which includes an electrolyte tank, a storage tank, an iron removal filter pipeline connecting the electrolyte tank and the storage tank, and a fourth scanning unit; the storage tank is connected to the vacuum liquid filling mechanism, the atmospheric pressure liquid filling mechanism and the defective liquid replenishment mechanism through pipeline; the fourth scanning unit is used to scan the QR code on the electrolyte tank to confirm that the electrolyte model matches the battery to be filled.

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