Full-automatic lithium battery liquid injection production line

Abstract

The utility model relates to the technical field of lithium battery production, in particular to a full-automatic lithium battery liquid injection production line, which comprises a flaring device, a liquid injection device, a liquid injection device and a liquid injection device, the liquid injection device is used for injecting liquid into the battery cell; the vacuum standing device is used for carrying out first vacuumizing treatment and standing treatment on the battery cell; the vacuum packaging device is used for carrying out secondary vacuumizing treatment and packaging treatment on the battery cell treated by the vacuum standing device; the circulating switching mechanism is used for bearing the battery cells and sequentially transporting the battery cells to the flaring device, the liquid injection device, the vacuum standing device and the vacuum packaging device for treatment; and the feeding device is used for conveying the battery cells to the circulating switching mechanism and adjusting the battery cells to be in a vertical state. The lithium battery production line has the advantages that automation of the lithium battery production line is improved, the liquid injection procedure can be completed in a unified mode, dependence on manpower is reduced, and the lithium battery production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a full-automatic lithium battery liquid injection production line. Background Art

[0002] Lithium battery is a kind of battery with chemical properties. Specifically, it is a battery with lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. The electrolyte of lithium battery is the carrier of ion transmission in the battery. The electrolyte plays the role of conducting electrons between the positive and negative electrodes of lithium battery, which is the guarantee for lithium-ion battery to obtain advantages such as high voltage and high specific energy. The lithium battery injection process is the key process in the lithium battery manufacturing process. The quality of the injection process directly affects the quality and service life of lithium battery.

[0003] In the prior art, the existing lithium battery liquid filling production line usually includes flaring, liquid filling, vacuum packaging, etc., and each process in the existing production line needs to be completed independently, and manual operation is required between each process. The degree of automation is low, the operation requirements for operators are high, there is instability, the quality of lithium battery products cannot be ensured, and the production efficiency is low. How to design a fully automatic lithium battery liquid filling production line and automate and integrate each process to improve the production efficiency of lithium batteries is a technical problem that enterprise R&D personnel urgently need to solve. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present application provides a fully automatic lithium battery filling production line.

[0005] The above invention objectives of the present application are achieved through the following technical solutions:

[0006] A fully automatic lithium battery filling production line, having battery cells to be conveyed, comprising:

[0007] An expansion device, used for expanding the battery cell;

[0008] A liquid injection device, which is used to inject liquid into the battery cell;

[0009] A vacuum standing device, which is used to perform the first vacuuming and standing treatment on the battery cell;

[0010] A vacuum packaging device, which is used to perform a second vacuuming process and packaging process on the battery cell after being processed by the vacuum static device;

[0011] A cyclic switching mechanism, which is used to carry the battery cells and transport the battery cells to the expansion device, the liquid injection device, the vacuum standing device and the vacuum packaging device in sequence for processing;

[0012] The loading device is used to transport the battery cells to the circulation switching mechanism and adjust the battery cells to a vertical state.

[0013] By adopting the above technical scheme, under the action of the loading device, the battery cell can be adjusted to a vertical position while completing the loading of the battery cell, so as to facilitate the subsequent process of expanding and injecting liquid into the battery bag of the battery cell, and then the expanding device is used to expand the battery cell, the injection device is responsible for injecting liquid into the expanded battery cell, and the vacuum standing device performs the first vacuum treatment and standing treatment on the battery cell. Under vacuum conditions, it can effectively remove the gas and impurities in the battery cell to ensure the quality of the subsequent packaging process. The vacuum packaging module simultaneously performs the second vacuum treatment and packaging treatment on the battery cell treated by the vacuum standing module. The second vacuum treatment ensures the quality and performance of the battery cell during packaging, completing the production of the entire lithium battery. By setting a circulating switching mechanism, the various processes such as expanding, injecting, vacuum standing and vacuum packaging can be integrated to form a seamless lithium battery injection production line, improve the automation of the lithium battery production line, enable the injection process to be completed in a unified manner and reduce dependence on manual labor, so as to improve the production efficiency of lithium batteries.

[0014] In a preferred example, the present application can be further configured as follows: the cyclic switching mechanism includes a disk body driven to rotate by a first driving motor, a plurality of jigs for vertically placing battery cells are arranged at equal intervals around the disk body, a workbench for installing the jig is arranged at a position corresponding to each jig on the disk body, the jig includes two opposite mounting positioning plates, a channel for placing the battery cell is formed between the two mounting positioning plates, a clamping block is rotatably arranged on each mounting positioning plate corresponding to the battery cell placement position, an elastic member is arranged in the clamping block, the elastic member is used to provide a restoring force for the clamping block to rotate close to the channel, an installation lifting plate is arranged for vertical sliding between the two mounting positioning plates, the installation lifting plate is used to support the battery cell, and a plurality of groups of clamping mechanisms are arranged on the disk body corresponding to each jig, the clamping mechanism is used to provide a thrust for the clamping block to rotate away from the channel.

[0015] By adopting the above technical scheme, the disk body drives each fixture to rotate cyclically under the action of the first driving motor, so as to complete the cyclic switching of each workstation between each process in turn, and realize seamless conversion of processes. When the battery cell is located in the channel formed by the two mounting positioning plates, the elastic member can provide the clamping block with a restoring force to rotate close to the channel, so that the clamping block can continuously abut against the battery cell, and since the two mounting positioning plates are relatively arranged, the two clamping blocks can be respectively and continuously clamped on the opposite sides of the battery cell to complete the positioning of the battery cell, which is convenient for the battery cell to carry out subsequent processes such as flaring, liquid injection, vacuum standing and vacuum packaging. The installation lifting plate provides a support position for the battery cell, and can adjust the height of the battery cell by vertically sliding the installation lifting plate between the two mounting positioning plates according to the actual size of the battery cell, thereby adjusting the abutment position of the clamping block, adapting to the positioning of battery cells of various sizes, and after the battery cell is packaged, the clamping mechanism provides the clamping block with a thrust to rotate away from the channel, thereby releasing the clamping relationship between the battery cell and the clamping block, which is convenient for unloading the battery cell.

[0016] In a preferred example, the present application can be further configured as follows: the clamping mechanism includes a push rod, which is slidably arranged on the workbench, and the push rod is used to abut the clamping block. The workbench is provided with a second driving device for driving the push rod to slide, and the second driving device includes a roller and a transmission slide, and the roller is rotatably connected to the end of the push rod away from the clamping block, and the transmission slide is slidably arranged on the workbench and is used to abut the roller. A side of the transmission slide close to the roller is provided with a plurality of inclined surfaces arranged corresponding to the number of clamping blocks, and there is an unclamping position on the sliding path of the transmission slide. When the transmission slide is in the unclamping position, the inclined surface abuts against the roller and provides the roller with a thrust to move close to the clamping block. An unclamping cylinder is provided on one side of the disc body, and after the disc body drives the jig through the expanding device, the liquid injection device, the vacuum static device and the vacuum packaging device in sequence, the piston rod of the unclamping cylinder is used to push the transmission slide.

[0017] By adopting the above technical solution, when the clamping cylinder drives the transmission slide to move to the clamping position, the inclined surface abuts against the roller, so that the roller provides the push rod with a component force to slide close to the clamping block to complete the pushing function of the push rod, and when the transmission slide is reset and disengaged from the clamping position, the clamping block rotates in the opposite direction under the action of the elastic member and abuts against the push rod, which can make the push rod slide in the opposite direction to complete the reset. Compared with directly using multiple driving devices to move each push rod, this method can save costs and the inclined surface matching method is more accurate, and the structure is simple and practical.

[0018] In a preferred example, the present application can be further configured as follows: the expanding device includes a expanding base, the expanding base is provided with a first pre-expansion mechanism and a expanding mechanism, when the battery cell is located in the channel, the first pre-expansion mechanism is used to pre-expand the battery cell, after the pre-expansion of the first pre-expansion mechanism is completed, the expanding mechanism expands the battery cell.

[0019] By adopting the above technical solution, the first pre-expansion mechanism is used to pre-expand the battery cell, and the battery bag of the battery cell is opened before the expansion mechanism expands the battery cell, so as to improve the expansion accuracy of the expansion mechanism.

[0020] In a preferred example, the present application can be further configured as follows: the first pre-expansion mechanism includes a rotating rod, which is rotatably connected to the expansion machine base, and the rotating rod is provided with a first thread segment and a second thread segment, and the first thread segment and the second thread segment are in opposite directions. The rotating rod is penetrated by two relative sliding seats, and the two sliding seats are respectively threadedly matched with the first thread segment and the second thread segment, and each sliding seat is horizontally provided with an expansion suction cup, and the expansion suction cup is connected to an external air pump, and the two expansion suction cups are respectively used to abut against opposite sides of the battery cell bag, and the expansion machine base is fixedly installed with a second driving motor for driving the rotating rod to rotate.

[0021] By adopting the above technical solution, according to the principle of screw transmission, the rotating rod rotates under the action of the motor. Since the first thread segment and the second thread segment are in opposite directions, the two sliding seats drive the expanding suction cups to move towards each other until they respectively abut against the opposite sides of the battery cell battery bag. At this time, the expanding suction cups are used to generate adsorption force on the battery bag through an external air pump, and then the two sliding seats are driven to move in opposite directions. The battery bag is opened under the pull of the two relative expanding suction cups, thereby realizing the pre-expansion process of the battery bag.

[0022] In a preferred example, the present application can be further configured as follows: the liquid injection device includes a liquid injection machine base, the liquid injection machine base is vertically slidably provided with a liquid injection piece with openings at both ends, one end of the liquid injection piece is connected to a liquid injection mechanism, the liquid injection mechanism is used to transport the electrolyte into the liquid injection piece, when the battery cell is located in the corresponding fixture, the liquid injection piece is located directly above the battery cell, and the liquid injection machine base is provided with a first driving component for driving the liquid injection piece to slide;

[0023] A collecting box is slidably disposed on the liquid injection machine base, the collecting box has an opening at the top and is disposed between the liquid injection piece and the fixture, there is a collecting position on the sliding path of the collecting box, when the collecting box is at the collecting position, the collecting box is located directly below the liquid injection piece and directly above the fixture, and the liquid injection machine base is provided with a second driving component for driving the collecting box to slide;

[0024] The second pre-expansion mechanism is arranged on the liquid injection machine base. When the battery cell is located in the fixture, the second pre-expansion mechanism is used to pre-expand the battery bag of the battery cell.

[0025] By adopting the above technical solution, the battery bag of the battery cell is pre-expanded by the second pre-expansion mechanism, which can prevent the battery bag from elastically resetting and closing after the expansion process is completed. Then the first drive component drives the injection piece to move vertically downward close to the battery cell until it enters the battery cell. Under the action of the injection mechanism, the electrolyte enters the battery cell through the injection piece to complete the injection process. At this time, the first drive component drives the injection piece to move vertically upward away from the battery cell to make way for the collection box, and in the process of vertical movement, the leaked liquid will drip into the inside of the battery cell without leaking out. After making way, the collection box is driven by the second drive component to move to the collection position, and the leaked liquid drips into the collection box for collection. Compared with the traditional injection device, by setting a collection box to collect electrolyte, it can avoid waste of electrolyte and reduce the possibility of electrolyte splashing to the scene.

[0026] In a preferred example, the present application can be further configured as follows: the vacuum static device includes a vertically arranged static stand, a first vacuum cylinder arranged at the top of the static stand, and a first vacuum box arranged below the first vacuum cylinder and connected to the piston rod of the first vacuum cylinder; and a plurality of first slides are arranged on the top of the static stand for sliding up and down with the first slide; and the first slide is fixedly connected and communicated with the interior of the first vacuum box; and a first vacuum outlet is arranged on the top of the first slide, and a first vacuum inlet is arranged on the bottom of the first slide; the first vacuum cylinder drives the first vacuum box to descend to cover the corresponding jig and battery cell, and air is extracted from the outside through the first vacuum inlet to thereby create a vacuum.

[0027] By adopting the above technical solution, a static stand is set to provide support and positioning for each component. When the vacuum static process is carried out, the first vacuum box is driven to descend by the first vacuum cylinder to cover the battery cell, and then the outside air is extracted through the first exhaust inlet to achieve vacuum treatment. The first slide cylinder slides up and down to ensure the sealing and guidance of the box. After the vacuum treatment is completed, the first vacuum box is raised by the first vacuum cylinder to complete the entire treatment process.

[0028] In a preferred example, the present application can be further configured as follows: the vacuum packaging device includes a packaging bracket arranged vertically, two second vacuum cylinders symmetrically arranged on the top of the packaging bracket; a second vacuum box is arranged below the packaging bracket, and the top of the second vacuum box is connected to the piston rods of the two second vacuum cylinders; a plurality of second slide cylinders are arranged on the top of the packaging bracket to slide up and down with the second slide cylinders; the second slide cylinder is fixedly connected and communicated with the inside of the second vacuum box; a second air extraction outlet is arranged on the top of the second slide cylinder, and a second air extraction inlet is arranged on the bottom of the second slide cylinder; The second vacuum cylinder drives the second vacuum box to descend to cover the jig and the battery cell, and the air is extracted from the outside through the second vacuum inlet to create a vacuum. The first packaging cylinder and the second packaging cylinder are respectively provided on both sides of the second vacuum box; and the interior of the second vacuum box is provided with a first hot-pressing packaging block connected to the piston rod of the first packaging cylinder, and a second hot-pressing packaging block connected to the piston rod of the second packaging cylinder; the first hot-pressing packaging block and the second hot-pressing packaging block are respectively driven by the first packaging cylinder and the second packaging cylinder to fit each other, thereby performing hot-pressing packaging on the top of the battery cell.

[0029] By adopting the above technical solution, a packaging bracket is set to provide support and positioning for each component. When performing the vacuum packaging process, the second vacuum cylinder drives the second vacuum box to descend to cover the battery cell, and then the outside air is extracted through the second air extraction inlet to achieve vacuum treatment, and the up and down sliding cooperation of the second slide cylinder can ensure the sealing and guidance of the box. After completing the vacuum treatment, the first packaging cylinder and the second packaging cylinder respectively drive the first hot pressing packaging block and the second hot pressing packaging block to fit each other, so that the top of the battery cell is clamped by the two packaging blocks, and the hot pressing packaging treatment is performed at a certain temperature and pressure to complete the packaging.

[0030] In a preferred example, the present application may be further configured as follows: the loading device includes a first conveyor belt for transporting the battery cells, and the battery cells are in a flat state on the first conveyor belt;

[0031] The battery cell flipping mechanism absorbs the battery cells in a flat state on the first conveyor belt and flips them into a vertical state, so as to meet the subsequent processes such as expansion and liquid injection;

[0032] The transfer mechanism grabs the battery cell that is flipped into a vertical position by the battery cell flipping mechanism and transfers it to the circulation switching mechanism.

[0033] By adopting the above technical solution, a first conveyor belt is set to keep the battery cells in a flat transportation state, and the battery cell flipping mechanism uses adsorption force to adsorb and flip the battery cells into a vertical state, making the battery cells easier to handle in subsequent processes such as expansion and liquid injection, and the battery cells in the vertical state are grabbed by the transfer mechanism and transferred to the circulation switching mechanism to complete the battery cell flipping and loading.

[0034] In a preferred example, the present application can be further configured as follows: a unloading device is provided on one side of the circulation switching mechanism, and the unloading device is used to collect the packaged battery cells. After any jig passes through the expanding device, the liquid injection device, the vacuum standing device and the vacuum packaging device in sequence, the transfer mechanism is also used to transfer the battery cells on the jig to the unloading device.

[0035] By adopting the above technical solution, a feeding device is set up to complete the feeding process of lithium battery production, improve the degree of automation of the lithium battery filling production line, and enable the transfer mechanism to be used simultaneously between the feeding and feeding processes, further improving the utilization rate of the production line equipment.

[0036] In a preferred example, the present application can be further configured as follows: the transfer mechanism includes a linear guide rail with linear reciprocating motion capability; a conveying carrier plate installed on the linear guide rail; a lifting cylinder vertically arranged on the conveying carrier plate; a transfer mounting plate firmly connected to the piston rod of the lifting cylinder; a plurality of pneumatic fingers installed under the transfer mounting plate, which grab the vertically placed battery cells; the lifting cylinder drives the plurality of pneumatic fingers to move up and down synchronously, and the linear guide rail is arranged between the loading device and the unloading device, and the linear guide rail drives the lifting cylinder and the plurality of pneumatic fingers to move linearly and reciprocatingly synchronously, so as to accurately position and grab the battery cells.

[0037] By adopting the above technical solution, during transportation, the linear guide rail cooperates with the lifting cylinder to drive the pneumatic fingers to perform linear reciprocating motion, which can realize biaxial motion of the pneumatic fingers in the vertical and horizontal directions, so that the pneumatic fingers can grasp the battery cells located in the battery cell flipping mechanism or the battery cells located in the circulation switching mechanism, and transfer the grasped battery cells to the circulation switching mechanism or the unloading device.

[0038] In a preferred example, the present application can be further configured as follows: the unloading device includes an empty tray unloading module, which sequentially delivers the stacked and stored empty trays to the battery cell loading station to load the battery cells;

[0039] The full tray stacking module is arranged side by side with the empty tray unloading module to stack the full trays loaded with battery cells in sequence;

[0040] The transfer module is arranged at the rear end of the full tray stacking module and the empty tray unloading module, and transfers the full tray of the battery cell loading station to the full tray stacking module for stacking.

[0041] By adopting the above technical scheme, the empty tray unloading module is mainly responsible for extracting empty trays from the stacking storage area and sending them to the battery cell loading station in sequence; when all the battery cells in a tray are emptied, the tray is an empty tray; the full tray stacking module is responsible for stacking full trays loaded with full battery cells; when all the battery cells in a tray are loaded, the tray is a full tray; the transfer module acts as a bridge between the battery cell loading station and the full tray stacking station, and the full tray stacking module and the empty tray unloading module are arranged side by side, and the transfer module is arranged at the rear end of the full tray stacking module and the empty tray unloading module, then the movement trajectory of the tray is U-shaped, so that the delivery of empty trays, battery cell loading and transfer, and stacking of full trays can be realized in a relatively compact space.

[0042] In summary, the present application includes at least one of the following beneficial technical effects:

[0043] 1. Under the action of the loading device, the battery cell can be adjusted to a vertical position while completing the battery cell loading, so as to facilitate the subsequent process of expanding and injecting liquid into the battery bag of the battery cell. Then, the expanding device is used to expand the battery cell, and the injection device is responsible for injecting liquid into the expanded battery cell. The vacuum standing device performs the first vacuum treatment and standing treatment on the battery cell. Under vacuum conditions, it can effectively remove the gas and impurities in the battery cell to ensure the quality of the subsequent packaging process. The vacuum packaging module simultaneously performs the second vacuum treatment and packaging treatment on the battery cell treated by the vacuum standing module. The second vacuum treatment ensures the quality and performance of the battery cell during packaging, completing the production of the entire lithium battery. By setting a circulating switching mechanism, the various processes such as expanding, injecting liquid, vacuum standing and vacuum packaging can be integrated to form a seamless lithium battery injection production line, improve the automation of the lithium battery production line, enable the injection process to be completed in a unified manner and reduce dependence on manual labor, so as to improve the production efficiency of lithium batteries.

[0044] 2. The disc body drives each jig to rotate cyclically under the action of the first driving motor, so as to complete the cyclic switching of each workstation between each process in turn, and realize seamless conversion of processes. When the battery cell is located in the channel formed by the two mounting positioning plates, the elastic member can provide the clamping block with a restoring force close to the channel rotation, so that the clamping block continuously abuts against the battery cell, and since the two mounting positioning plates are relatively arranged, the two clamping blocks can be respectively and continuously clamped on the opposite sides of the battery cell to complete the positioning of the battery cell, which is convenient for the battery cell to carry out subsequent processes such as flaring, liquid injection, vacuum standing and vacuum packaging. The installation lifting plate provides a support position for the battery cell, and can adjust the height of the battery cell by vertically sliding the installation lifting plate between the two mounting positioning plates according to the actual size of the battery cell, thereby adjusting the abutting position of the clamping block, adapting to the positioning of battery cells of various sizes, and after the battery cell is packaged, the clamping mechanism provides the clamping block with a thrust to rotate away from the channel, thereby releasing the clamping relationship between the battery cell and the clamping block, which is convenient for unloading the battery cell.

[0045] 3. When the unclamping cylinder drives the transmission slide to move to the unclamping position, the inclined surface abuts against the roller, so that the roller provides the push rod with a component force to slide close to the clamping block to complete the pushing function of the push rod, and when the transmission slide is reset and disengaged from the clamping position, the clamping block rotates in the opposite direction under the action of the elastic member and abuts against the push rod, which can make the push rod slide in the opposite direction to complete the reset. Compared with directly using multiple driving devices to move each push rod, this method can save costs and the inclined surface matching method has higher accuracy, simple structure and practicality.

[0046] 4. The battery cell is pre-expanded by using a first pre-expanding mechanism, and the battery bag of the battery cell is opened before the expanding mechanism expands the battery cell, so as to improve the expansion accuracy of the expanding mechanism.

[0047] 5. By setting up a collection box to collect the electrolyte, it is possible to avoid the waste of electrolyte and reduce the possibility of electrolyte splashing to the site.

[0048] 6. By setting up a first conveyor belt, the battery cells are placed in a flat transportation state. The battery cell flipping mechanism uses adsorption force to adsorb and flip the battery cells into a vertical state, making it easier to handle the battery cells in subsequent processes such as expansion and liquid injection. The battery cells in the vertical state are grabbed by the transfer mechanism and transferred to the circulation switching mechanism to complete the flipping and loading of the battery cells.

[0049] 7. By setting up a feeding device to complete the feeding process of lithium battery production, the degree of automation of the lithium battery filling production line is improved, and the transfer mechanism is used simultaneously between the feeding and feeding processes to further improve the utilization rate of the production line equipment.

[0050] 8. The linear guide rail cooperates with the lifting cylinder to drive the pneumatic fingers to perform linear reciprocating motion, which can realize the biaxial motion of the pneumatic fingers in the vertical and horizontal directions, so that the pneumatic fingers can grasp the battery cells located in the battery cell flipping mechanism or the battery cells located in the circulation switching mechanism, and transfer the grasped battery cells to the circulation switching mechanism or the unloading device. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic diagram of the overall structure of a fully automatic lithium battery injection production line in one embodiment of the present application;

[0052] Figure 2 This is another overall structural schematic diagram of a fully automatic lithium battery injection production line in one embodiment of the present application;

[0053] Figure 3 This is a schematic diagram of the structure of the disk in one embodiment of the present application;

[0054] Figure 4 It is a structural schematic diagram of a fixture in one embodiment of the present application;

[0055] Figure 5 is a schematic structural diagram of an expansion device in one embodiment of the present application;

[0056] Figure 6 is a structural schematic diagram of a first pre-expansion mechanism in an embodiment of the present application;

[0057] Figure 7 It is a structural schematic diagram of a liquid injection device in one embodiment of the present application;

[0058] Figure 8 This is a schematic diagram of the structure of the liquid injection device after hiding the second pre-expansion mechanism in one embodiment of the present application;

[0059] Fig. 9 It is a structural schematic diagram of a vacuum static device in one embodiment of the present application;

[0060] Fig.10 is another structural schematic diagram of the vacuum static device in one embodiment of the present application;

[0061] Fig.11 is a schematic structural diagram of a vacuum packaging device in one embodiment of the present application;

[0062] Fig.12 is another structural schematic diagram of a vacuum packaging device in one embodiment of the present application;

[0063] Fig.13 is a structural schematic diagram of a first hot pressing packaging block in an embodiment of the present application;

[0064] Fig.14 It is a structural schematic diagram of a feeding device in one embodiment of the present application;

[0065] Fig.15 is another structural schematic diagram of a feeding device in one embodiment of the present application;

[0066] Fig.16 This is a schematic diagram of the structure of a cell flipping mechanism in one embodiment of the present application;

[0067] Fig.17 This is another structural schematic diagram of the battery cell flipping mechanism in one embodiment of the present application;

[0068] Fig.18 It is a structural schematic diagram of a transfer mechanism in one embodiment of the present application;

[0069] Fig.19 It is a structural schematic diagram of a feeding device in one embodiment of the present application;

[0070] Fig. 20 This is a schematic diagram of the structure of a feeding device without a feeding tray in one embodiment of the present application;

[0071] Fig.21 This is another structural schematic diagram of a feeding device in one embodiment of the present application;

[0072] Fig. 22 It is a schematic diagram of the structure of the first lifting module or the second lifting module in one embodiment of the present application;

[0073] Fig.23 It is a schematic diagram of the structure of the first transfer module or the second transfer module in one embodiment of the present application;

[0074] Fig.24 It is a schematic diagram of the structure of the first clamping module or the second clamping module in one embodiment of the present application;

[0075] Fig.25 This is a schematic diagram of the structure of the limiting mechanism in one embodiment of the present application;

[0076] Fig.26 This is a schematic diagram of the structure of an empty tray or a full tray in one embodiment of the present application;

[0077] Fig. 27 It is a structural diagram of a cyclic code scanning mechanism in one embodiment of the present application.

[0078] Figure numerals: 1, flaring device; 2, liquid injection device; 3, vacuum static device; 4, vacuum packaging device; 5, circulation switching mechanism; 6, feeding device; 7, unloading device; 8, circulation code scanning mechanism; 81, detection machine; 82, synchronous wheel; 83, synchronous belt; 84, synchronous mounting plate; 85, synchronous cylinder; 86, synchronous moving plate; 87, positioning fixture; 9, rotating mechanical arm; 10, vertical axis cylinder; 11, clamping cylinder; 12, code scanner; 13, first weighing device; 14, second weighing device;

[0079] A1, expansion machine base; A2, workbench; A3, installation positioning plate; A4, battery cell; A5, channel; A6, clamping block; A7, first pre-expansion mechanism; A71, rotating rod; A72, first thread segment; A73, second thread segment; A74, sliding seat; A75, expansion suction cup; A76, second drive motor; A8, expansion mechanism; A81, expansion piece; A82, expansion motor lead screw; A9, lifting plate; A10, first drive device; A101, adjustment seat; A102, strip slide hole; A103, screw; A104, adjustment block; A11, clamping mechanism; A111, push rod; A112, second drive device; A1121, roller; A1122, transmission slide; A1123, inclined surface; A1124, clamping cylinder;

[0080] B1, liquid injection machine base; B2, battery core; B4, liquid injection parts; B5, liquid injection mechanism; B51, liquid storage tank; B52, first liquid pump; B6, first drive assembly; B61, liquid injection lifting plate; B62, liquid injection motor screw; B7, collection box; B8, second drive assembly; B81, collection moving plate; B82, collection cylinder; B9, second pre-expansion mechanism; B10, second liquid pump;

[0081] C1, first conveyor belt; C2, battery cell flipping mechanism; C3, transfer mechanism; C4, first electric push rod; C5, rack; C6, gear; C7, rotating shaft; C8, battery cell suction nozzle; C10, second electric push rod; C11, mounting seat; C12, linear guide rail; C13, conveying carrier plate; C14, lifting cylinder; C15, transfer mounting plate; C16, pneumatic finger; C17, vertical plate; C18, slide rail;

[0082] D1, vacuum standing module; D2, vacuum packaging module; D3, turntable mechanism; D4, plate body; D5, fixture; D6, standing stand; D7, first vacuum cylinder; D8, first vacuum box; D9, first slide; D10, first exhaust outlet; D11, first exhaust inlet; D12, packaging bracket; D13, second vacuum cylinder; D14, second vacuum box; D15, second slide; D16, second exhaust outlet; D18, first packaging cylinder; D19, second packaging cylinder; D20, first hot-pressing packaging block; D21, second hot-pressing packaging block; D23, top cover; D24, vertical clamp; D25, observation window;

[0083] E1, empty tray unloading module; E2, full tray stacking module; E3, first lifting module; E4, first clamping module; E5, first conveying roller device; E6, battery cell loading station; E7, first lifting cylinder; E8, first carrier plate; E9, first clamping cylinder; E10, first positioning rod; E11, empty tray; E12, full tray; E13, positioning hole; E14, second lifting module; E15, second roller conveyor Device; E16, second clamping module; E17, first transfer module; E18, second transfer module; E19, transfer workbench; E20, transfer linear module; E21, second lifting cylinder; E22, transfer pushing plate; E23, limiting mechanism; E24, limiting cylinder; E25, limiting block; E26, V-shaped groove; E27, material tray blocking module; E28, blocking column; E29, blocking plate; E30, avoidance groove. DETAILED DESCRIPTION

[0084] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0085] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure.

[0086] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0087] A fully automatic lithium battery filling production line of the present application is described below with reference to the accompanying drawings.

[0088] like Figure 1 and Figure 2 As shown, the fully automatic lithium battery liquid injection production line has battery cells to be transported, and also includes a flaring device 1, which is used to flare the battery cells; a liquid injection device 2, which is used to inject liquid into the battery cells; a vacuum standing device 3, which is used to perform a first vacuum treatment and a standing treatment on the battery cells; a vacuum packaging device 4, which is used to perform a second vacuum treatment and a packaging treatment on the battery cells treated by the vacuum standing device 3; a circulation switching mechanism 5, which is used to carry the battery cells and transport the battery cells to the flaring device 1, the liquid injection device 2, the vacuum standing device 3 and the vacuum packaging device 4 in sequence for treatment; a loading device 6, which is used to transport the battery cells to the circulation switching mechanism 5 and adjust the battery cells to a vertical state.

[0089] During operation, the loading device 6 is responsible for adjusting the battery cell to a vertical position and then placing it on the circulation switching mechanism 5, so as to facilitate the subsequent process of expanding and injecting liquid into the battery bag of the battery cell, wherein the expanding device 1 is responsible for expanding the battery cell, the injection device 2 is responsible for injecting liquid into the expanded battery cell, and the vacuum standing device 3 performs the first vacuum treatment and standing treatment on the battery cell. Under vacuum conditions, it can effectively remove the gas and impurities in the battery cell to ensure the quality of the subsequent packaging process. The vacuum packaging module simultaneously performs the second vacuum treatment and packaging treatment on the battery cell treated by the vacuum standing module. The second vacuum treatment ensures the quality and performance of the battery cell during packaging. The circulation switching mechanism 5 can carry the battery cell and transport the battery cell to the expanding device 1, the injection device 2, the vacuum standing device 3 and the vacuum packaging device 4 in turn for processing, thereby integrating the various processes such as expanding, injecting, vacuum standing and vacuum packaging to form a seamless lithium battery injection production line. The production of the entire lithium battery can be completed after one cycle, so as to improve the automation of the lithium battery production line, enable the injection process to be completed in a unified manner and reduce dependence on manual labor, so as to improve the production efficiency of lithium batteries.

[0090] It should be noted that a battery bag refers to a structure used to encapsulate and protect batteries or battery packs, usually a soft bag material made of aluminum, also known as aluminum-plastic film. This is common knowledge among those skilled in the art and will not be elaborated here.

[0091] Among them, Figure 3 and Figure 4 As shown, the cyclic switching mechanism 5 includes a disk body D4 driven to rotate by a first driving motor (not shown in the figure), and a plurality of jigs D5 for vertically placing the battery cells A4 are arranged around the disk body D4 at equal intervals. The jig D5 includes two opposite mounting positioning plates A3, and a channel A5 for placing the battery cells A4 is formed between the two mounting positioning plates A3. Each mounting positioning plate A3 is rotatably provided with a clamping block A6 corresponding to the placement position of the battery cell A4, and an elastic member is arranged in the clamping block A6, and the elastic member is used to provide the clamping block A6 with a clamping block A6. The two mounting positioning plates A3 are provided with a vertical sliding installation lifting plate A9, which is used to support the battery core A4, and the disk body D4 is provided with a plurality of groups of clamping mechanisms A11 corresponding to each fixture D5, and the clamping mechanisms A11 are used to provide a thrust for the clamping block A6 to rotate away from the channel A5. The disk body D4 drives each fixture D5 to rotate cyclically under the action of the first driving motor, so as to complete the cyclic switching of each workstation between various processes in turn, and realize the process without When the battery cell A4 is located in the channel A5 formed by the two mounting positioning plates A3, the elastic member can provide the clamping block A6 with a restoring force to rotate close to the channel A5, so that the clamping block A6 can continuously abut against the battery cell A4, and because the two mounting positioning plates A3 are arranged relative to each other, the two clamping blocks A6 can respectively and continuously clamp the battery cell A4 on the opposite sides to complete the positioning of the battery cell A4, which is convenient for the battery cell A4 to perform subsequent processes such as expanding, filling, vacuum standing and vacuum packaging. The lifting plate A9 is installed to provide the battery cell A4 with a restoring force to rotate close to the channel A5, so that the clamping block A6 can continuously abut against the battery cell A4. 4 provides a support position, and can adjust the height of the battery cell A4 according to the actual size of the battery cell A4 by vertically sliding the installation lifting plate A9 between the two installation positioning plates A3, thereby adjusting the abutting position of the clamping block A6, so as to adapt to the positioning of battery cells A4 of various sizes, and after the battery cell A4 is packaged, the clamping mechanism A11 provides a thrust to the clamping block A6 to rotate away from the channel A5, thereby releasing the clamping relationship between the battery cell A4 and the clamping block A6, so as to facilitate the unloading operation of the battery cell A4.

[0092] It should be noted that the multiple “battery cells” appearing in the article are to illustrate the coordination or status between different modules, and “fully automatic” means reducing dependence on manual operation in most processes.

[0093] Specifically, the elastic member is a torsion spring (not shown in the figure), and a number of rotating shafts (not shown in the figure) are fixedly connected to the mounting positioning plate A3 corresponding to the number of clamping blocks A6. The clamping block A6 passes through and is rotatably connected to the rotating shaft. The torsion spring is sleeved on the rotating shaft. One end of the torsion spring is fixedly connected to the rotating shaft and the other end is fixedly connected to the clamping block A6. By setting the rotating shaft, an installation position can be provided for the clamping block A6 and the torsion spring. By sleeved the torsion spring on the rotating shaft and fixedly connected to the clamping block A6 and the rotating shaft, a rotational restoring force can be provided to the clamping block A6.

[0094] In addition, if Figure 3 and Figure 4 As shown, the position of each fixture D5 corresponding to the disk body D4 is provided with a workbench A2 for installing the fixture D5, and the workbench A2 is provided with a first driving device A10 for driving the installation and lifting of the lifting plate A9. The first driving device A10 includes an adjustment seat A101, and the adjustment seat A101 is vertically provided with a strip sliding hole A102. A screw rod A103 is vertically rotatably connected in the strip sliding hole A102, and one end of the screw rod A103 movably passes through the top of the adjustment seat A101 to install the lifting plate. An adjustment block A104 is extended from one end of A9, and the thread of the adjustment block A104 passes through the screw A103 and is located in the strip slide hole A102. When it is necessary to adjust the height of the installation lifting plate A9, according to the principle of screw transmission, by rotating one end of the screw A103 located on the top of the adjustment seat A101, the adjustment hole moves vertically in the strip slide hole A102, so as to drive the installation lifting plate A9 to slide vertically between the two installation positioning plates A3, so as to realize the adjustment of the height of the installation lifting plate A9.

[0095] Specifically, the clamping mechanism A11 includes a push rod A111, which is slidably arranged on the workbench A2, and the push rod A111 is used to abut against the clamping block A6. The workbench A2 is provided with a second driving device A112 for driving the push rod A111 to slide, and the second driving device A112 includes a roller A1121 and a transmission slide A1122. The roller A1121 is rotatably connected to the end of the push rod A111 away from the clamping block A6, and the transmission slide A1122 slides The transmission slide A1122 is arranged on the workbench A2 and is used to abut the roller A1121. A side of the transmission slide A1122 close to the roller A1121 is provided with a plurality of inclined surfaces A1123 arranged in a manner corresponding to the number of the clamping blocks A6. There is an unclamping position on the sliding path of the transmission slide A1122. When the transmission slide A1122 is located at the unclamping position, the inclined surface A1123 abuts against the roller A1121 and provides a thrust for the roller A1121 to move close to the clamping block A6. Figure 1 and Figure 2As shown, a clamping cylinder A1124 is provided on one side of the disc body D4. After the disc body D4 drives the fixture D5 to pass through the expanding device 1, the liquid injection device 2, the vacuum static device 3 and the vacuum packaging device 4 in sequence, the piston rod of the clamping cylinder A1124 is used to push the transmission slide A1122. When the clamping cylinder A1124 drives the transmission slide A1122 to move to the clamping position, the inclined surface A1123 abuts against the roller A1121, so that the roller A1121 provides a support for the push rod A111. The sliding force of the clamping block A6 is used to complete the pushing function of the push rod A111, and when the transmission slide plate A1122 is reset and disengaged from the clamping position, the clamping block A6 rotates in the opposite direction under the action of the elastic member and abuts against the push rod A111, so that the push rod A111 can slide in the opposite direction to complete the reset. Compared with directly using multiple driving devices to move each push rod A111, this method can save costs and the inclined surface matching method is more accurate, and the structure is simple and practical.

[0096] Preferably, if Figure 5 As shown, the expanding device 1 includes a expanding base A1, and the expanding base A1 is provided with a first pre-expansion mechanism A7 and a expanding mechanism A8. When the battery cell A4 is located in the channel A5, the first pre-expansion mechanism A7 is used to pre-expand the battery cell A4. After the pre-expansion of the first pre-expansion mechanism A7 is completed, the expanding mechanism A8 expands the battery cell A4. The first pre-expansion mechanism A7 is used to pre-expand the battery cell A4, and the battery bag of the battery cell A4 is opened before the expanding mechanism A8 expands the battery cell A4 to improve the expanding accuracy of the expanding mechanism A8.

[0097] Specifically, Figure 6 As shown, the first pre-expansion mechanism A7 includes a rotating rod A71, which is rotatably connected to the expansion machine base A1, and the rotating rod A71 is provided with a first thread segment A72 and a second thread segment A73, and the first thread segment A72 and the second thread segment A73 are in opposite directions. The rotating rod A71 is penetrated by two opposite sliding seats A74, and the two sliding seats A74 are respectively threadedly matched with the first thread segment A72 and the second thread segment A73, and each sliding seat A74 is horizontally provided with an expansion suction cup A75, and the expansion suction cup A75 is connected to an external air pump, and the two expansion suction cups A75 are respectively used to abut the opposite sides of the battery bag of the battery cell A4. The expansion machine base A1 is fixedly installed with a second driving motor A76 for driving the rotating rod A71 to rotate. According to the principle of screw transmission, the rotating rod A71 rotates under the action of the motor. Since the first thread segment A72 and the second thread segment A73 are in opposite directions, the two sliding seats A74 drive the expansion suction cups A75 to move towards each other until they respectively abut against the opposite sides of the battery bag of the battery cell A4. At this time, the expansion suction cups A75 generate adsorption force on the battery bag through an external air pump, and then drive the two sliding seats A74 to move in the opposite direction. The battery bag is opened under the pull of the two relative expansion suction cups A75, thereby realizing the pre-expansion process of the battery bag.

[0098] Specifically, Figure 5 As shown, the expanding mechanism A8 includes a expanding piece A81, which is vertically slidably arranged on the expanding base A1. When the battery cell A4 is located in the channel A5, the expanding piece A81 is located directly above the battery cell A4, and the size of the expanding piece A81 near the end of the channel A5 gradually increases from bottom to top. The expanding base A1 is vertically fixed with a expanding motor screw A82, and the expanding motor screw A82 is used to drive the expanding piece A81 to slide vertically. After the battery bag completes the pre-expansion process, the expanding piece A81 moves vertically under the action of the expanding motor screw A82 until it enters the battery bag to complete the expanding process. Moreover, since the size of the expanding piece A81 near the end of the channel A5 gradually increases from bottom to top, it is convenient for the expanding piece A81 to enter the interior of the battery bag and can reduce the possibility of damaging the battery bag. At the same time, the transmission accuracy of the expanding motor screw A82 is high, which is suitable for the working condition of expanding the battery cell A4.

[0099] Preferably, if Figure 7 and Figure 8 As shown, the liquid injection device 2 includes a liquid injection machine base B1, and the liquid injection machine base B1 is vertically slidably provided with a liquid injection piece B4 with openings at both ends. One end of the liquid injection piece B4 is connected to a liquid injection mechanism B5, and the liquid injection mechanism B5 is used to transport the electrolyte into the liquid injection piece B4. When the battery cell B2 is located at the corresponding fixture D5, the liquid injection piece B4 is located directly above the battery cell B2. The liquid injection machine base B1 is provided with a first driving component B6 for driving the liquid injection piece B4 to slide. The liquid injection machine base B1 is slidably provided with a collecting box B7, and the top of the collecting box B7 is open and is arranged between the liquid injection piece B4 and the fixture D5. There is a collection position on the sliding path of B7. When the collection box B7 is located at the collection position, the collection box B7 is located directly below the injection piece B4 and directly above the fixture D5. The injection machine base B1 is provided with a second driving component B8 for driving the collection box B7 to slide. The injection machine base B1 is also provided with a second pre-expansion mechanism B9. When the battery cell B2 is located at the fixture D5, the second pre-expansion mechanism B9 is used to pre-expand the battery bag of the battery cell B2. In this embodiment, the specific structure and implementation principle of the second pre-expansion mechanism B9 are the same as those of the first pre-expansion mechanism A7, which will not be described in detail here.

[0100] During the injection process, the battery bag of the battery cell B2 is pre-expanded by using the second pre-expansion mechanism B9, which can prevent the battery bag from elastically resetting and closing after the expansion process is completed. Then the first drive component B6 drives the injection part B4 to move vertically downward close to the battery cell B2 until it enters the battery cell B2. Under the action of the injection mechanism B5, the electrolyte enters the battery cell B2 through the injection part B4 to complete the injection process. At this time, the first drive component B6 drives the injection part B4 to move vertically upward away from the battery cell B2 to make way for the collection box B7, and in the process of vertical movement, the leaked liquid will drip into the inside of the battery cell B2 without leaking out. After making way, the second drive component B8 drives the collection box B7 to move to the collection position, and the leaked liquid drips into the collection box B7 for collection. Compared with the traditional injection device, by setting the collection box B7 to collect the electrolyte, it can avoid the waste of electrolyte and reduce the possibility of electrolyte splashing to the scene.

[0101] Specifically, in the present embodiment, the first driving component B6 includes a liquid injection lifting plate B61 and a liquid injection motor screw B62. The liquid injection motor screw B62 is vertically fixedly installed on the liquid injection machine base B1. The liquid injection motor screw B62 is used to drive the liquid injection lifting plate B61 to move. The liquid injection part B4 is fixedly installed on the liquid injection lifting plate B61. By setting the liquid injection lifting plate B61 to provide an installation position for the liquid injection part B4, and vertically setting the liquid injection motor screw B62, a power source for vertical movement can be provided to the liquid injection lifting plate B61, so as to realize the vertical movement of the liquid injection part B4 to move vertically into the battery cell B2 for liquid injection. At the same time, the transmission accuracy of the liquid injection motor screw B62 is high, which is suitable for the working condition of liquid injection of the battery cell B2.

[0102] The second driving assembly B8 includes a collecting movable plate B81 and a collecting cylinder B82. The liquid injection machine base B1 is provided with a clearance opening. The collecting cylinder B82 is fixedly installed on the liquid injection machine base B1 and is used to drive the collecting movable plate B81 to slide in the clearance opening. The collecting box B7 is fixedly installed on the collecting movable plate B81. By setting the collecting movable plate B81 to provide an installation position for the collecting box B7, and setting the collecting cylinder B82, a power source can be provided for the collecting movable plate B81 to move in the clearance opening, so as to drive the collecting box B7 to move to the liquid injection piece B4 to collect the leaked liquid.

[0103] The injection mechanism B5 includes a liquid storage tank B51 and a first liquid pump B52. The liquid storage tank B51 is filled with electrolyte. The liquid storage tank B51 and the first liquid pump B52 are both arranged on one side of the injection machine base B1. One end of the first liquid pump B52 is connected to the top of the injection component B4 through an infusion tube (not shown in the figure) and the other end is connected to the liquid storage tank B51 through the infusion tube. When the injection component B4 is located inside the battery cell B2, the first liquid pump B52 can generate a negative pressure state in the liquid storage tank B51 through the infusion tube, so that the electrolyte in the liquid storage tank B51 is transported to the injection component B4 through the infusion tube, thereby entering the battery cell B2 to complete the injection.

[0104] Furthermore, a second liquid pump B10 is provided on one side of the injection machine base B1, one end of the second liquid pump B10 is connected to the collection box B7 through an infusion tube (not shown in the figure) and the other end is connected to the liquid storage tank B51 through the infusion tube. The second liquid pump B10 can generate a negative pressure state inside the collection box B7 through the infusion tube, so that the electrolyte collected in the collection box B7 is transported to the liquid storage tank B51 through the infusion tube, thereby completing the recovery and utilization of the leaked electrolyte.

[0105] Preferably, if Fig. 9 and Fig.10 As shown, the vacuum static device 3 includes a vertically arranged static stand D6, a first vacuum cylinder D7 arranged on the top of the static stand D6, and a first vacuum box D8 arranged below the first vacuum cylinder D7 and connected to the piston rod of the first vacuum cylinder D7; and a plurality of first slides D9 are arranged on the top of the static stand D6 to slide up and down with it; and the first slide D9 is fixedly connected and communicated with the inside of the first vacuum box D8; and a first air extraction outlet D10 is arranged on the top of the first slide D9, and a first air extraction inlet D11 is arranged on the bottom of the first slide D9; the first vacuum cylinder D7 drives the first vacuum box D8 to descend to cover the corresponding fixture D5 and the battery cell, and the air is extracted from the outside through the first air extraction inlet D11 to thereby create a vacuum;

[0106] Among them, the static stand D6 is a vertically arranged bracket used to support and position the entire vacuum static module D1; the first vacuum cylinder D7 is a cylinder located at the top of the static stand D6, used to drive the up and down movement of the first vacuum box D8 during the vacuum treatment process; the first vacuum box D8 is a box located below the first vacuum cylinder D7, connected to the piston rod of the first vacuum cylinder D7; this box is used to accommodate battery cells and perform vacuum treatment; the first slide cylinder D9 is a sliding cylinder located at the top of the static stand D6, which can slide up and down on the static stand D6 and cooperate with the top of the static stand D6; the first slide cylinder D9 is provided with a first vacuum outlet D10 on the top and a first vacuum inlet D11 on the bottom, and these ports are used for the entry and exit of gas to realize the vacuum treatment process;

[0107] The implementation process of the vacuum static device 3 is as follows: the first vacuum cylinder D7 drives the first vacuum box D8 to descend to cover the battery cell; the external air is extracted through the first vacuum inlet D11 to achieve vacuum treatment; the first slide cylinder D9 slides up and down to ensure the sealing and guidance of the box; after the vacuum treatment is completed, the first vacuum cylinder D7 raises the first vacuum box D8 to complete the entire treatment process.

[0108] Preferably, if Fig.11 , Fig.12 and Fig.13 As shown, the vacuum packaging device 4 includes a vertically arranged packaging bracket D12, two second vacuum cylinders D13 symmetrically arranged on the top of the packaging bracket D12; and a second vacuum box D14 is provided below the packaging bracket D12, and the top of the second vacuum box D14 is connected to the piston rods of the two second vacuum cylinders D13; and a plurality of second slide cylinders D15 that slide up and down with it are provided on the top of the packaging bracket D12; and the second slide cylinder D15 is fixedly connected and communicated with the inside of the second vacuum box D14; and a second air extraction outlet D16 is provided on the top of the second slide cylinder D15, and a second air extraction inlet is provided at the bottom of the second slide cylinder D15; the second vacuum cylinder D1 3. Drive the second vacuum box D14 downward to cover the jig D5 and the battery cell, and extract the air from the outside through the second air extraction inlet to evacuate the battery cell. The first packaging cylinder D18 and the second packaging cylinder D19 are respectively provided on both sides of the second vacuum box D14; and the interior of the second vacuum box D14 is provided with a first hot-pressing packaging block D20 connected to the piston rod of the first packaging cylinder D18, and a second hot-pressing packaging block D21 connected to the piston rod of the second packaging cylinder D19; the first hot-pressing packaging block D20 and the second hot-pressing packaging block D21 are respectively driven to fit each other through the first packaging cylinder D18 and the second packaging cylinder D19, so as to perform hot-pressing packaging on the top of the battery cell;

[0109] Among them, the packaging bracket D12 is a vertically arranged bracket, used to support and position the entire vacuum packaging module D2; the second vacuum cylinder D13 is two cylinders symmetrically arranged on the top of the packaging bracket D12, used to drive the actions during the packaging process; the second vacuum box D14 is a box located below the packaging bracket D12, connected to the piston rods of the two second vacuum cylinders D13; this box is used to accommodate the battery cells and perform vacuum packaging processing; the second slide cylinder D15 is a sliding cylinder located on the top of the packaging bracket D12, which can slide up and down on the packaging bracket D12 and cooperate with the top of the packaging bracket D12; the second vacuum outlet D16 and the second vacuum inlet: the second slide cylinder D15 is provided with a second vacuum outlet D16 on the top and a second vacuum inlet on the bottom, and these ports are used for the entry and exit of gas to realize the vacuum packaging process;

[0110] The implementation process of the vacuum packaging device 4 is as follows: the second vacuum cylinder D13 drives the second vacuum box D14 to descend to cover the battery cell; the outside air is extracted through the second vacuum inlet to achieve vacuum packaging processing; the second slide cylinder D15 slides up and down to ensure the sealing and guidance of the box; after the vacuum packaging processing is completed, the second vacuum cylinder D13 raises the second vacuum box D14 to complete the entire packaging process.

[0111] Furthermore, a first packaging cylinder D18 and a second packaging cylinder D19 are respectively provided on both sides of the second vacuum box D14; and a first hot-pressing packaging block D20 connected to the piston rod of the first packaging cylinder D18 and a second hot-pressing packaging block D21 connected to the piston rod of the second packaging cylinder D19 are provided inside the second vacuum box D14; the first hot-pressing packaging block D20 and the second hot-pressing packaging block D21 are respectively driven by the first packaging cylinder D18 and the second packaging cylinder D19 to fit each other, thereby performing hot-pressing packaging on the top of the battery cell.

[0112] Specifically, the first packaging cylinder D18 and the second packaging cylinder D19 are respectively arranged on both sides of the second vacuum box D14; they are used to control the movement of the first hot-pressing packaging block D20 and the second hot-pressing packaging block D21 to achieve hot-pressing packaging of the top of the battery cell; the first hot-pressing packaging block D20 and the second hot-pressing packaging block D21 are respectively connected to the piston rods of the first packaging cylinder D18 and the second packaging cylinder D19; they are located inside the second vacuum box D14, and are used to perform hot-pressing packaging on the top of the battery cell;

[0113] The first packaging cylinder D18 and the second packaging cylinder D19 respectively drive the first hot-pressing packaging block D20 and the second hot-pressing packaging block D21 to fit each other; in this way, the top of the battery cell is clamped by the two packaging blocks and is hot-pressed and packaged at a certain temperature and pressure; this process can effectively fix the top of the battery cell and ensure the stability and safety of the battery cell during use; through this mechanism, the vacuum packaging process can not only be carried out in a vacuum environment, but also the top of the battery cell can be hot-pressed and packaged, thereby improving the packaging quality and efficiency.

[0114] Furthermore, an opening is formed on the top of the second vacuum box D14, and a detachable top cover D23 for covering the opening is provided, and a plurality of vertical clamps D24 for limiting the top cover D23 are provided.

[0115] Specifically, the top of the second vacuum box D14 is open; in order to seal the box during the vacuum packaging process, a removable top cover D23 is provided on the second vacuum box D14, and the top cover D23 is used to cover the open top to ensure that the gas does not leak during the vacuum packaging process; the setting of the top cover D23 allows the top cover D23 to be disassembled, thereby facilitating the detection of the packaging effect, which is used in the initial debugging or subsequent debugging of the machine; vertical clamps D24 are installed around the second vacuum box D14 to limit and clamp the top cover D23; these vertical clamps D24 ensure that the top cover D23 is in a stable position during the packaging process to prevent it from accidentally moving and causing the vacuum packaging to fail.

[0116] Furthermore, a transparent observation window D25 is provided on the top of the top cover D23.

[0117] Specifically, a transparent observation window D25 is provided on the top of the top cover D23. The purpose of this design is to allow the operator to observe the status of the battery cell during the packaging process, ensure that the packaging process is normal, and monitor whether the packaging is complete; the transparent observation window D25 can be a transparent glass or plastic window installed on the top cover D23.

[0118] Preferably, if Fig.14 and Fig.15 As shown, the loading device 6 includes a first conveyor belt C1, a battery cell flipping mechanism C2 and a transfer mechanism C3. The first conveyor belt C1 is used to transport the battery cells, and the battery cells are in a flat state on the first conveyor belt C1; the battery cell flipping mechanism C2 is used to adsorb the battery cells in a flat state on the first conveyor belt C1 and flip them into a vertical state, so as to meet the subsequent expansion, liquid injection and other processes; the transfer mechanism C3 is used to grab the battery cells flipped into a vertical state by the battery cell flipping mechanism C2 and transfer them to the circulation switching mechanism 5. By setting the first conveyor belt C1, the battery cells are in a flat transportation state, and the battery cell flipping mechanism C2 is used to adsorb and flip the battery cells into a vertical state by using adsorption force, so that the battery cells are easier to handle in subsequent expansion, liquid injection and other processes, and the vertical battery cells are grabbed and transferred to the circulation switching mechanism 5 by the transfer mechanism C3, completing the battery cell flipping and loading.

[0119] It should be noted that the first conveyor belt C1 is a device for transporting packaged battery cells; the battery cells are laid flat on the first conveyor belt C1 for easy transportation and handling; the battery cell flipping mechanism C2 operates the battery cells in a flat state on the first conveyor belt C1; the battery cells are adsorbed and flipped into a vertical state using adsorption force or other mechanical means, in order to make the battery cells easier to handle in the subsequent liquid injection process; the transfer mechanism C3 is responsible for grabbing the battery cells flipped into a vertical state by the flipping mechanism and transferring them to the liquid injection process; it may include a robotic arm, a conveyor belt or other mobile equipment for accurately positioning and moving the battery cells to meet the requirements of the liquid injection process.

[0120] In this embodiment, if Fig.16 and Fig.17 As shown, the battery cell flipping mechanism C2 includes a first electric push rod C4, a rack C5 firmly connected to the push rod head of the first electric push rod C4, a gear C6 meshing with the rack C5, a rotating shaft C7 firmly connected to the central axis hole of the gear C6, and a plurality of battery cell suction air nozzles C8 installed on the rotating shaft C7; the telescopic motion synchronous belt 83 of the first electric push rod C4 drives the rack C5 to reciprocate, so that the rack C5 drives the gear C6, the rotating shaft C7 and the battery cell suction air nozzle C8 to rotate, thereby causing the battery cell in a flat state adsorbed by the battery cell adsorption air nozzle C8 to be flipped to a vertical state.

[0121] Specifically, the first electric push rod C4 is an electric device, which drives the operation of the entire battery cell flipping mechanism C2 by controlling its telescopic movement; the rack C5 is an elongated part, which is firmly connected to the push rod head of the first electric push rod C4; the design of the rack C5 enables it to reciprocate along a certain direction; the gear C6 is a part meshing with the rack C5, and when the rack C5 reciprocates, the gear C6 will also move accordingly; the movement of the gear C6 is achieved by the push of the rack C5; the rotating shaft C7 is an shaft firmly connected to the central shaft hole of the gear C6, which is tightly matched with the gear C6 and rotates with the movement of the gear C6; the battery cell adsorption air nozzle C8 is installed on the rotating shaft C7, and is used to adsorb the battery cell; they use vacuum or other adsorption principles to ensure that the battery cell is firmly fixed.

[0122] The implementation process of the battery cell flipping mechanism C2 is as follows: when the first electric push rod C4 performs telescopic movement, the rack C5 will also reciprocate accordingly; the movement of the rack C5 will drive the gear C6 to rotate, thereby causing the rotating shaft C7 and the battery cell adsorption air nozzle C8 to also perform rotational movement; since the battery cell adsorption air nozzle C8 adsorbs the battery cell, their rotation will cause the battery cell to flip from a flat state to a vertical state; through this design, the battery cell flipping mechanism C2 can effectively flip the battery cell in a flat state to a vertical state to meet the requirements of the subsequent liquid injection process.

[0123] Furthermore, there is also a suction position adjustment mechanism for adjusting the suction position of the battery cell suction nozzle C8 of the battery cell flipping mechanism C2; and the suction position adjustment mechanism includes: a second electric push rod C10, a mounting seat C11 firmly connected to the push rod head of the second electric push rod C10; and the battery cell flipping mechanism C2 is installed on the mounting seat C11; and the rotating shaft C7 is rotationally connected to the mounting seat C11.

[0124] Specifically, the adsorption position adjustment mechanism is a device for adjusting the position of the battery cell adsorption air nozzle C8; it can ensure that the adsorption air nozzle adsorbs the battery cell at the correct position for flipping operation; the second electric push rod C10 is an electric device for controlling the adsorption position adjustment mechanism; by controlling the telescopic movement of the second electric push rod C10, the position of the mounting seat C11 can be adjusted, and then the position of the battery cell adsorption air nozzle C8 can be adjusted; the mounting seat C11 is a component firmly connected to the push rod head of the second electric push rod C10; the battery cell flipping mechanism C2 is installed on the mounting seat C11, and is connected to the second electric push rod C10 through the mounting seat C11, so that the position of the battery cell adsorption air nozzle C8 can be adjusted; the rotating shaft C7 is rotatably connected to the mounting seat C11, so that the mounting seat C11 moves with the rotation of the rotating shaft C7, thereby realizing the adjustment of the position of the battery cell adsorption air nozzle C8; during the initial debugging, it should be debugged so that the battery cell adsorption air nozzle C8 is just aligned and fits onto the battery cell after rotation, so that it can be accurately adsorbed.

[0125] In addition, if Figure 1 and Figure 2 As shown, a feeding device 7 is provided on one side of the circulation switching mechanism 5, and the feeding device 7 is used to collect the packaged battery cells. After any jig D5 passes through the expanding device 1, the liquid injection device 2, the vacuum standing device 3 and the vacuum packaging device 4 in sequence, the transfer mechanism C3 is also used to transfer the battery cells on the jig D5 to the feeding device 7. By setting the feeding device 7, the feeding process of lithium battery production can be completed, the degree of automation of the lithium battery liquid injection production line can be improved, and the transfer mechanism C3 can be used between the two processes of loading and unloading at the same time, so as to further improve the utilization rate of the production line equipment.

[0126] Further, such as Fig.15 and Fig.18As shown, the transfer mechanism C3 includes a linear guide rail C12 with linear reciprocating motion capability; a conveying carrier plate C13 installed on the linear guide rail C12; a lifting cylinder C14 vertically arranged on the conveying carrier plate C13; a transfer mounting plate C15 firmly connected to the piston rod of the lifting cylinder C14; a plurality of pneumatic fingers C16 installed under the transfer mounting plate C15, which grab the vertically placed battery cells; the lifting cylinder C14 drives the plurality of pneumatic fingers C16 to move up and down synchronously, and the linear guide rail C12 drives the lifting cylinder C14 and the plurality of pneumatic fingers C16 to move linearly and reciprocatingly synchronously, so as to accurately position and grab the battery cells.

[0127] Specifically, the linear guide rail C12 is a device with linear reciprocating motion capability, which is used to control the motion trajectory of the moving mechanism and ensure that the moving mechanism performs accurate linear motion in the horizontal direction; the conveying carrier plate C13 is a platform installed on the linear guide rail C12 and is used to support and fix other components of the moving mechanism; the lifting cylinder C14 is a pneumatic device with vertical motion capability; it is vertically set with the conveying carrier plate C13 and is used to control the up and down motion of the moving mechanism; the conveying mounting plate C15 is a component that is firmly connected to the piston rod of the lifting cylinder C14 and is used to connect the lifting cylinder C14. Cylinder C14 and pneumatic finger C16; pneumatic finger C16 is a device installed under the transfer mounting plate C15, and is used to grab the battery cells in a vertical state; they realize opening and closing actions through pneumatic principles to ensure accurate grasping of the battery cells; pneumatic finger C16 can adopt multi-fingered pneumatic fingers, which can be purchased from the market; the lifting cylinder C14 drives the pneumatic finger C16 to move up and down to realize the grasping action of the battery cells; the linear guide C12 drives the lifting cylinder C14 and the pneumatic finger C16 to perform linear reciprocating motion in the horizontal direction, thereby transferring the grasped battery cells to the position of the injection process.

[0128] Further, such as Fig.18 As shown, a vertical plate C17 is also vertically provided on the conveying carrier plate C13; and a plurality of slide rails C18 are vertically installed on one side of the vertical plate C17; and the transfer mounting plate C15 is slidably matched with the slide rail C18, so that the transfer mounting plate C15 can move up and down more smoothly with the lifting cylinder C14.

[0129] Specifically, the vertical plate C17 is a vertical plate-like structure vertically arranged on the conveying carrier plate C13; it is used to enhance the structural strength of the conveying carrier plate C13 or provide additional support; the slide rail C18 is installed on one side of the vertical plate C17, along the vertical direction of the vertical plate C17, to provide a sliding surface for the sliding fit between the transfer mounting plate C15 and the vertical plate C17; part of the structure on the transfer mounting plate C15 is designed to match the slide rail C18, so that the transfer mounting plate C15 can slide smoothly on the slide rail C18, so that the lifting cylinder C14 can move up and down more smoothly, reduce friction and resistance, and improve the stability and reliability of the moving mechanism.

[0130] In this embodiment, if Figures 19 to 26 As shown, the unloading device 7 includes an empty tray unloading module E1, which sequentially delivers the stacked and stored empty trays E11 to the cell loading station E6, thereby loading the cells;

[0131] The full tray stacking module E2 is arranged side by side with the empty tray unloading module E1, and stacks the full trays E12 loaded with full cells in sequence;

[0132] The transfer module is arranged at the rear end of the full tray stacking module E2 and the empty tray unloading module E1, and transfers the full tray E12 of the battery cell loading station E6 to the full tray stacking module E2 for stacking.

[0133] Specifically, the empty tray unloading module E1 is mainly responsible for extracting empty trays from the stacking storage area and sending them to the battery cell loading station E6 in sequence; when all the batteries in a tray are emptied, the tray is an empty tray E11; the full tray stacking module E2 is responsible for stacking the full tray E12 loaded with full batteries; when all the batteries in a tray are loaded, the tray is a full tray E12; the transfer module acts as a bridge between the battery cell loading station E6 and the full tray E12 stacking station;

[0134] The full tray stacking module E2 and the empty tray unloading module E1 are arranged side by side, and the transfer module is arranged at the rear ends of the full tray stacking module E2 and the empty tray unloading module E1, so that the movement trajectory of the tray is U-shaped, so that the empty tray can be sent out, the battery cell can be loaded and transferred, and the full tray can be stacked in a relatively compact space;

[0135] When all the cells in the tray of the cell loading station E6 are loaded, the full tray E12 needs to be transferred to the full tray stacking module E2 for stacking; the task of the transfer module is to transfer these full trays E12 from the cell loading station E6 to the stacking module to ensure the continuity and efficiency of the production line.

[0136] Furthermore, the empty tray unloading module E1 includes:

[0137] The first lifting module E3 is used to load the stacked empty trays E11 and lift them;

[0138] Two first clamping modules E4 are used to clamp the empty trays E11 of the second layer, so that the empty trays E11 of the first layer are movable;

[0139] Two first conveying roller devices E5 arranged at intervals convey the empty trays E11 of the first layer to the battery cell loading station E6;

[0140] The first lifting module E3 includes: a vertically arranged first lifting cylinder E7, and a first supporting plate E8 connected to the piston rod of the first lifting cylinder E7; two first clamping modules E4 are respectively arranged on the sides of the two first conveying roller devices E5; and the first clamping module E4 includes two first clamping cylinders E9 arranged at intervals; and the piston rods of the first clamping cylinders E9 are connected to the first positioning rod E10; and positioning holes E13 corresponding to the first positioning rod E10 are formed on both sides of the empty tray E11 and the full tray E12; the first positioning rod E10 is driven by the clamping cylinder to be plugged into the positioning hole E13 of the empty tray E11, so as to clamp the empty tray E11 of the second layer.

[0141] Specifically, the vertically arranged first lifting cylinder E7 is used to realize the lifting of the empty tray E11; the first carrying plate E8 is connected to the piston rod of the first lifting cylinder E7, and is used to support and carry the empty tray E11; the two first clamping modules E4 are used to clamp the empty tray E11 of the second layer, so that the empty tray E11 of the first layer becomes movable; the two first clamping cylinders E9 arranged at intervals are used to clamp the empty tray E11; the first positioning rod E10 is connected to the piston rod of the clamping cylinder for precise positioning; the positioning holes E13 of the empty tray E11 and the full tray E12 are located on both sides of the empty tray E11 and the full tray E12, and are used to be plugged and matched with the first positioning rod E10; the two first conveying roller devices E5 arranged at intervals convey the empty tray E11 of the first layer to the battery cell loading station E6, and are arranged on the sides of the two clamping modules, and are used to roll and convey the empty tray E11;

[0142] The first lifting module E3 first lifts the stacked empty trays E11 to the clamping height; the first positioning rods E10 of the two first clamping modules E4 are driven by the first clamping cylinder E9 to be inserted into the positioning holes E13 of the second layer of empty trays E11, thereby clamping the second layer of empty trays E11. Of course, there are still empty trays E11 above the second layer of empty trays E11, so all the empty trays E11 on the second layer and above are actually clamped; the first layer of empty trays E11 in a movable state are then transported to the battery cell loading station E6 through the first conveying roller device E5; after the empty trays E11 are loaded, the first lifting module E3 is lowered to prepare for the next round of lifting operations.

[0143] Furthermore, the full tray stacking module E2 comprises:

[0144] The second lifting module E14 is used to load the full tray E12 and lift and stack it;

[0145] Two second roller conveyors E15 arranged at intervals convey the full tray E12 to the second lifting module E14;

[0146] Two second clamping modules E16, used for clamping the full tray E12 of the second layer;

[0147] The second lifting module E14 includes: a second lifting cylinder arranged vertically, and a second supporting plate connected to the piston rod of the second lifting cylinder; two second clamping modules E16 are respectively arranged on the sides of the two second roller conveying devices E15; and the second clamping module E16 includes two second clamping cylinders arranged at intervals; and the piston rods of the second clamping cylinders are connected to second positioning rods; the second positioning rods are driven by the clamping cylinders to be plugged into the positioning holes E13 of the full tray E12, so as to clamp the second layer of full tray E12, and then insert the first layer of full tray E12 under the second layer of full tray E12 to achieve stacking.

[0148] Specifically, the second lifting cylinder arranged vertically is used to realize the lifting and lowering of the full tray E12; the second carrying plate is connected to the piston rod of the second lifting cylinder, and is used to support and carry the full tray E12; two second roller conveying devices E15 arranged at intervals convey the full tray E12 to the second lifting module E14, which are arranged on the sides of the two clamping modules, and are used to roll and convey the full tray E12; the two second clamping modules E16 are used to clamp the full tray E12 of the second layer, and insert the first layer of full tray E12 under the second layer of full tray E12 to achieve stacking;

[0149] Two second clamping cylinders arranged at intervals are used to clamp the full tray E12; the second positioning rod is connected to the piston rod of the clamping cylinder for precise positioning; the positioning holes E13 of the full tray E12 are located on both sides of the full tray E12, and are used to be plugged and matched with the second positioning rod; it should be noted that the second lifting module E14 has basically the same structure as the first lifting module E3, and the figure marks of some parts in the second lifting module E14 are omitted, and the first lifting module E3 can be specifically referred to; the first roller conveyor device E5 and the second roller conveyor device E15 can adopt the existing roller conveyor belt driven by a motor, and the specific structure will not be repeated;

[0150] The second lifting module E14 first lifts the stacked full trays E12 to the stacking height; the second positioning rods of the two second clamping modules E16 are driven by the clamping cylinder to be inserted into the positioning holes E13 of the second layer of full trays E12, and the second layer of full trays E12 are clamped; there are full trays E12 on the second layer of full trays E12, and actually all the full trays E12 of the second layer and above are clamped up; after clamping up, there is a accommodating space below the second layer of full trays E12, which can accommodate the first layer of full trays E12, so the second roller conveyor loading can transport a full tray E12 to the accommodating space; after stacking is completed, the second lifting module E14 is lowered again, the clamping module clamps the first layer of full trays E12 and then the clamping module is lifted again, leaving a accommodating space below, and so on, stacking up layer by layer.

[0151] Furthermore, the transfer module is composed of a first transfer module E17 and a second transfer module E18; and the first transfer module E17 includes: a horizontally arranged transfer workbench E19; a transfer linear module E20 arranged below the transfer workbench E19; and a second lifting cylinder E21 is arranged on the reciprocating slider of the linear module; and the piston rod of the second lifting cylinder E21 is connected to a transfer push plate E22; and the second transfer module E18 has the same structure as the first transfer module E17; through the second lifting cylinder E21, the transfer push plate E22 is connected to the transfer push plate E22; The lowering cylinder E21 drives the transfer pushing plate E22 to abut the full material tray E12; and the transfer linear module E20 of the first transfer module E17 drives the transfer pushing plate E22 of the first transfer module E17 to move toward the second transfer module E18, and the transfer linear module E20 of the second transfer module E18 drives the transfer pushing plate E22 of the second transfer module E18 to move toward the full material tray stacking module E2; thereby synchronously driving the full material tray E12 to move toward the full material tray stacking module E2.

[0152] Specifically, the horizontally arranged transfer workbench E19 is used to carry and transfer the full material tray E12; the transfer linear module E20 is located below the transfer workbench E19 and is responsible for driving the transfer push plate E22 to move in the horizontal direction; the second lifting cylinder E21 is arranged on the reciprocating slider and is used to control the lifting and lowering of the transfer push plate E22; the transfer push plate E22 is connected to the piston rod of the second lifting cylinder E21 and is used to push the full material tray E12; the second transfer module E18 has the same structure and function as the first transfer module E17;

[0153] The second lifting cylinder E21 of the first transfer module E17 drives the transfer pushing plate E22 to abut the full tray E12, ensuring that the full tray E12 is stable and ready to be transferred; the transfer linear module E20 of the first transfer module E17 drives the transfer pushing plate E22 of the first transfer module E17 to move toward the second transfer module E18; and then the transfer linear module E20 of the second transfer module E18 drives the transfer pushing plate E22 of the second transfer module E18 to move toward the full tray stacking module E2; the two transfer modules drive the full tray E12 in turn from the battery cell loading station E6 to the full tray stacking module E2.

[0154] Furthermore, both sides of the first conveying roller device E5 are provided with a material tray blocking module E27; and the material tray blocking module E27 includes a vertically arranged material blocking column E28; and the inner side surface of the material blocking column E28 is provided with a material blocking plate E29; and the bottom of the material blocking plate E29 is formed with a avoidance groove E30 for avoiding the first layer of empty material tray E11.

[0155] Specifically, the material blocking columns E28 are vertically arranged on both sides of the first conveying roller device E5, serving as the main support structure for blocking the material, to prevent the empty material tray E11 from deflecting or tilting during the lifting process; the material blocking plate E29 is located on the inner side of the material blocking column E28, to provide additional support and protection for the empty material tray E11, to ensure that the material tray remains stable during the transmission process; the avoidance groove E30 is formed at the bottom of the material blocking plate E29, to provide an avoidance space for the first layer of empty material trays E11, to ensure that the empty material tray E11 will not collide with other components or structures during the rolling process, thereby avoiding damage or deviation;

[0156] When the first layer of empty trays E11 moves from the first conveying roller device E5, the baffle plate E29 plays an auxiliary limiting role on the empty tray E11 above, ensuring that the empty tray E11 above will not deviate; when the empty tray E11 rolls to the position of the baffle module, the avoidance groove E30 provides an avoidance space for the first layer of empty trays E11, ensuring that the trays can pass smoothly without being damaged or offset due to collision with other structures.

[0157] Furthermore, a limiting mechanism E23 is provided on one side of the first transfer module E17; and the limiting mechanism E23 includes a horizontally arranged limiting cylinder E24; and the piston rod of the limiting cylinder E24 is connected to the limiting block E25; and the limiting block E25 is formed with a V-shaped groove E26; when the empty tray E11 reaches the battery cell loading station E6, the limiting cylinder E24 drives the limiting block E25 to extend out to abut against the empty tray E11 for limiting.

[0158] Specifically, the limit cylinder E24 is horizontally arranged on one side of the first transfer module E17, providing driving force to control the extension and retraction of the limit block E25; the limit block E25 is connected to the piston rod of the limit cylinder E24, and actually performs the limiting action, contacts with the empty tray E11 and limits it; the V-shaped groove E26 is formed on the limit block E25, contacts with the corners of the empty tray E11, and forms a stable limiting point to ensure the accurate positioning of the empty tray E11, and avoid the empty tray E11 from being offset when the robot installs battery cells on it. The robot is arranged on the side of the transfer module, and clamps the processed battery cells from another production line into the empty tray E11.

[0159] In addition, if Fig. 27 As shown, a circulating code scanning mechanism 8 is also provided between the transfer mechanism C3 and the unloading device 7. The circulating code scanning mechanism 8 is used to scan the battery cells after liquid injection and packaging and to transport the good battery cells to the unloading device 7, so as to facilitate the digital management of the battery cells on the production line. The code scanning technology is common knowledge for those skilled in the art and will not be elaborated here.

[0160] Specifically, the cyclic code scanning mechanism 8 includes a detection machine 81, on which two relative synchronous wheels 82 are rotatably arranged, a synchronous belt 83 is wound between the two synchronous wheels 82, and the two synchronous wheels 82 are meshed with the synchronous belt 83. A synchronous motor (not shown in the figure) is fixedly installed on the detection machine 81, and the output shaft of the synchronous motor is fixedly connected to any synchronous wheel 82. The opposite sides of the synchronous belt 83 are fixedly connected to synchronous mounting plates 84, and each synchronous mounting plate 84 is fixedly installed with a synchronous cylinder 85, and the piston rod of the synchronous cylinder 85 is fixedly connected with a synchronous moving plate 86, and a positioning fixture 87 is arranged on the synchronous moving plate 86. The positioning fixture 87 can be a fixture, a tray or other suitable fixed The structure of the fixed battery cell ensures the stability and safety of the battery cell when it is moved. A rotating mechanical arm 9 is provided on the side of the detection machine 81 close to the unloading device 7. A vertical axis cylinder 10 is fixedly installed on the arm end of the rotating mechanical arm 9. A clamping cylinder 11 is fixedly installed on the piston rod of the vertical axis cylinder 10. The clamping cylinder 11 is used to clamp the battery cell located in the positioning fixture 87. A barcode scanner 12 is provided on the side of the detection machine 81 close to the transfer mechanism C3, which is used to scan the battery cell transported by the transfer mechanism C3. The rotating mechanical arm 9 refers to an automated device that can rotate on two axes A and B. The rotating mechanical arm 9 and the barcode scanner 12 are common knowledge of those skilled in the art and will not be described in detail here.

[0161] Among them, in this embodiment, the barcode scanner 12 is used to scan the battery cell grasped by the pneumatic finger C16. When the synchronous belt 83 drives one of the synchronous mounting plates 84 to move to the side close to the transfer mechanism C3, the corresponding synchronous cylinder 85 is used to drive the battery cell in the positioning fixture 87 to move to directly below the pneumatic finger C16. When the synchronous belt 83 drives one of the synchronous mounting plates 84 to move to the side close to the unloading device 7, the corresponding synchronous cylinder 85 is used to drive the battery cell in the positioning fixture 87 to move to directly below the clamping cylinder 11.

[0162] The implementation process of the cyclic scanning mechanism 8 is as follows: when the pneumatic finger C16 clamps the battery cell and moves it to the detection machine 81, the barcode scanner 12 scans the battery cell to complete the data management of the battery cell, and starts the synchronous motor to drive the synchronous belt 83 to drive one of the synchronous mounting plates 84 to move close to the transfer mechanism C3. At this time, the corresponding synchronous cylinder 85 drives the synchronous moving plate 86, thereby driving the positioning fixture 87 to move to the bottom of the pneumatic finger C16. The pneumatic finger C16 places the battery cell in the positioning fixture 87 to complete the fixation, and then the synchronous motor is reversed to drive the synchronous belt 83 to drive the synchronous mounting plate 84 to move close to the unloading mechanism. At the same time, the rotating robotic arm 9 drives the clamping cylinder 11 to rotate close to the detection platform until the corresponding synchronous cylinder 85 drives the battery cell to move to the bottom of the clamping cylinder 11, so that the clamping cylinder 11 grabs the battery cell and transports it to the unloading device 7.

[0163] Among them, the sliding direction of the synchronous mounting plate 84 is perpendicular to the sliding direction of the synchronous moving plate 86, so that under the transmission action of the synchronous belt 83 and the synchronous cylinder 85, each positioning fixture 87 is displaced along the L-shaped route, so that the sliding routes of the two positioning fixtures 87 are surrounded to form a rectangular closed-loop route. Each time the two positioning fixtures 87 complete the displacement of the rectangular closed-loop route, the docking and switching of the workstations can be completed, so as to facilitate the transfer of equipment in the subsequent process. At the same time, each positioning fixture 87 can realize the function of dual-axis displacement, and can be accurately moved according to the pick-up and placement positions of the equipment in the previous and subsequent processes. There is no need for the equipment in this process to adjust the pick-up and placement positions, thereby improving the efficiency of the docking and switching of the battery cells. The two positioning fixtures 87 only need to perform reciprocating operations along the L-shaped route to complete the docking and switching of the battery cells. The structure is simple and the operation is easy.

[0164] In addition, if Figure 1 and Figure 2As shown, a first weighing device 13 is provided on one side of the transfer mechanism C3 close to the circulation switching mechanism 5, and the first weighing device 13 is used to detect the weight of the battery cell before liquid injection. A second weighing device 14 is provided on one side of the transfer mechanism C3 close to the unloading device 7, and the second weighing device 14 is used to detect the weight of the battery cell after liquid injection and packaging, so as to perform quality inspection on the product. Both the first weighing device 13 and the second weighing device 14 can adopt existing weighing instruments, etc., which will not be described in detail here.

[0165] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A fully automatic lithium battery filling production line, having battery cells to be transported, characterized in that: include: A widening device (1), used for widening the battery cell; A liquid injection device (2), used for injecting liquid into the battery cell; A vacuum standing device (3), which is used to perform a first vacuuming process and a standing process on the battery cell; A vacuum packaging device (4) is used to perform a second vacuuming process and packaging process on the battery cell that has been processed by the vacuum standing device (3); A circulation switching mechanism (5) is used to carry the battery cells and sequentially transport the battery cells to the expansion device (1), the liquid injection device (2), the vacuum standing device (3) and the vacuum packaging device (4) for processing; A loading device (6) is used to transport the battery cells to the circulation switching mechanism (5) and adjust the battery cells to a vertical position.

2. A fully automatic lithium battery injection production line as claimed in claim 1, characterized in that: The cyclic switching mechanism (5) comprises a disk (D4) driven to rotate by a first driving motor, a plurality of jigs (D5) for vertically placing electric cores are arranged at equal intervals around the disk (D4), a workbench (A2) for installing the jigs (D5) is arranged at a position corresponding to each jig (D5) on the disk (D4), the jig (D5) comprises two opposite mounting positioning plates (A3), a channel (A5) for placing the electric core is formed between the two mounting positioning plates (A3), and each mounting positioning plate (A3) corresponds to the placement of the electric core. A clamping block (A6) is arranged for rotation at each position, an elastic member is arranged inside the clamping block (A6), and the elastic member is used to provide a restoring force for the clamping block (A6) to rotate close to the channel (A5); a mounting lifting plate (A9) is arranged for vertical sliding between the two mounting positioning plates (A3), and the mounting lifting plate (A9) is used to support the battery cell; and a plurality of groups of opening and clamping mechanisms (A11) are arranged on the disk body (D4) corresponding to each fixture (D5), and the opening and clamping mechanisms (A11) are used to provide a thrust for the clamping block (A6) to rotate away from the channel (A5).

3. A fully automatic lithium battery injection production line as claimed in claim 2, characterized in that: The clamping mechanism (A11) comprises a push rod (A111), the push rod (A111) is slidably arranged on the workbench (A2), the push rod (A111) is used to abut against the clamping block (A6), the workbench (A2) is provided with a second driving device (A112) for driving the push rod (A111) to slide, the second driving device (A112) comprises a roller (A1121) and a transmission slide plate (A1122), the roller (A1121) is rotatably connected to one end of the push rod (A111) away from the clamping block (A6), the transmission slide plate (A1122) is slidably arranged on the workbench (A2) and is used to abut against the roller (A1121), and the side of the transmission slide plate (A1122 close to the roller (A1121) faces A plurality of inclined surfaces (A1123) are arranged in accordance with the number of the clamping blocks (A6), and an opening position exists on the sliding path of the transmission slide (A1122). When the transmission slide (A1122) is located at the opening position, the inclined surface (A1123) abuts against the roller (A1121) and provides the roller (A1121) with a thrust to move closer to the clamping block (A6). An opening cylinder (A1124) is provided on one side of the disk body (D4). After the disk body (D4) drives the fixture (D5) to pass through the expanding device (1), the liquid injection device (2), the vacuum static device (3) and the vacuum packaging device (4) in sequence, the piston rod of the opening cylinder (A1124) is used to push the transmission slide (A1122).

4. A fully automatic lithium battery injection production line as claimed in claim 1, characterized in that: The expansion device (1) comprises an expansion machine base (A1), and the expansion machine base (A1) is provided with a first pre-expansion mechanism (A7) and an expansion mechanism (A8). When the battery cell is located in the channel (A5), the first pre-expansion mechanism (A7) is used to pre-expand the battery cell. After the pre-expansion of the first pre-expansion mechanism (A7) is completed, the expansion mechanism (A8) expands the battery cell.

5. A fully automatic lithium battery injection production line as claimed in claim 4, characterized in that: The first pre-expansion mechanism (A7) comprises a rotating rod (A71), the rotating rod (A71) is rotatably connected to the expansion machine base (A1), the rotating rod (A71) is provided with a first thread segment (A72) and a second thread segment (A73), the first thread segment (A72) and the second thread segment (A73) are in opposite directions, the rotating rod (A71) is penetrated by two opposite sliding seats (A74), the two sliding seats (A74) are respectively threadedly matched with the first thread segment (A72) and the second thread segment (A73), each sliding seat (A74) is horizontally provided with an expansion suction cup (A75), the expansion suction cup (A75) is connected to an external air pump, the two expansion suction cups (A75) are respectively used to abut against opposite sides of the battery cell bag, and the expansion machine base (A1) is fixedly installed with a second driving motor (A76) for driving the rotating rod (A71) to rotate.

6. A fully automatic lithium battery injection production line as claimed in claim 1, characterized in that: The liquid injection device (2) comprises a liquid injection machine base (B1), the liquid injection machine base (B1) is vertically slidably provided with a liquid injection piece (B4) with openings at both ends, one end of the liquid injection piece (B4) is connected to a liquid injection mechanism (B5), the liquid injection mechanism (B5) is used to transport electrolyte into the liquid injection piece (B4), when the battery cell is located in the corresponding fixture (D5), the liquid injection piece (B4) is located directly above the battery cell, and the liquid injection machine base (B1) is provided with a first driving component (B6) for driving the liquid injection piece (B4) to slide; A collecting box (B7), the collecting box (B7) is slidably arranged on the liquid injection machine base (B1), the top of the collecting box (B7) is open and is arranged between the liquid injection piece (B4) and the fixture (D5), there is a collecting position on the sliding path of the collecting box (B7), when the collecting box (B7) is located at the collecting position, the collecting box (B7) is located directly below the liquid injection piece (B4) and directly above the fixture (D5), and the liquid injection machine base (B1) is provided with a second driving component (B8) for driving the collecting box (B7) to slide; The second pre-expansion mechanism (B9) is arranged on the liquid injection machine base (B1), and when the battery cell is located in the fixture (D5), the second pre-expansion mechanism (B9) is used to pre-expand the battery bag of the battery cell.

7. A fully automatic lithium battery injection production line as claimed in claim 1, characterized in that: The vacuum static device (3) comprises a vertically arranged static stand (D6), a first vacuum cylinder (D7) arranged at the top of the static stand (D6), and a first vacuum box (D8) arranged below the first vacuum cylinder (D7) and connected to the piston rod of the first vacuum cylinder (D7); and a plurality of first slides (D9) are arranged at the top of the static stand (D6) to slide up and down with it; and the first slide (D9) is fixedly connected and communicated with the inside of the first vacuum box (D8); and a first air extraction outlet (D10) is arranged at the top of the first slide (D9), and a first air extraction inlet (D11) is arranged at the bottom of the first slide (D9); the first vacuum cylinder (D7) drives the first vacuum box (D8) to descend to cover the corresponding fixture (D5) and the battery cell, and air is extracted from the outside through the first air extraction inlet (D11) to create a vacuum.

8. The fully automatic lithium battery injection production line according to claim 1, characterized in that: The vacuum packaging device (4) comprises a packaging support (D12) arranged vertically, two second vacuum cylinders (D13) symmetrically arranged at the top of the packaging support (D12); a second vacuum box (D14) is arranged below the packaging support (D12), and the top of the second vacuum box (D14) is connected to the piston rods of the two second vacuum cylinders (D13); a plurality of second slide cylinders (D15) are arranged on the top of the packaging support (D12) to slide up and down with the second slide cylinder (D15); and the second slide cylinder (D15) is fixedly connected and communicated with the inside of the second vacuum box (D14); a second air extraction outlet (D16) is arranged on the top of the second slide cylinder (D15), and a second air extraction inlet is arranged on the bottom of the second slide cylinder (D15); the second vacuum cylinder (D1 3) driving the second vacuum box (D14) to descend to cover the jig (D5) and the battery cell, and extracting air from the outside through the second air extraction inlet to create a vacuum; a first packaging cylinder (D18) and a second packaging cylinder (D19) are respectively provided on both sides of the second vacuum box (D14); and a first hot-pressing packaging block (D20) connected to the piston rod of the first packaging cylinder (D18) and a second hot-pressing packaging block (D21) connected to the piston rod of the second packaging cylinder (D19) are provided inside the second vacuum box (D14); the first hot-pressing packaging block (D20) and the second hot-pressing packaging block (D21) are respectively driven by the first packaging cylinder (D18) and the second packaging cylinder (D19) to fit each other, thereby performing hot-pressing packaging on the top of the battery cell.

9. A fully automatic lithium battery injection production line as claimed in claim 1, characterized in that: The loading device (6) comprises a first conveyor belt (C1) for transporting the battery cells, and the battery cells are placed flat on the first conveyor belt (C1); The battery cell flipping mechanism (C2) absorbs the battery cells in a flat state on the first conveyor belt (C1) and flips them into a vertical state, thereby meeting the subsequent expansion and liquid injection processes; The transfer mechanism (C3) grabs the battery cell that has been flipped into a vertical position by the battery cell flipping mechanism (C2) and transfers it to the circulation switching mechanism (5).

10. A fully automatic lithium battery injection production line as claimed in claim 9, characterized in that: A material unloading device (7) is provided on one side of the circulation switching mechanism (5), and the material unloading device (7) is used to collect the packaged battery cells. After any jig (D5) passes through the expanding device (1), the liquid injection device (2), the vacuum standing device (3) and the vacuum packaging device (4) in sequence, the transfer mechanism (C3) is also used to transfer the battery cells on the jig (D5) to the material unloading device (7).

11. A fully automatic lithium battery injection production line as claimed in claim 9, characterized in that: The transfer mechanism (C3) comprises a linear guide rail (C12) capable of linear reciprocating motion; a conveying carrier plate (C13) mounted on the linear guide rail (C12); a lifting cylinder (C14) vertically arranged on the conveying carrier plate (C13); a transfer mounting plate (C15) firmly connected to the piston rod of the lifting cylinder (C14); a plurality of pneumatic fingers (C16) mounted below the transfer mounting plate (C15) for grabbing the vertically placed battery cells; the lifting cylinder (C14) drives the plurality of pneumatic fingers (C16) to move up and down synchronously, the linear guide rail (C12) is arranged between the loading device (6) and the unloading device (7), and the linear guide rail (C12) drives the lifting cylinder (C14) and the plurality of pneumatic fingers (C16) to move linearly and reciprocatingly synchronously, thereby accurately positioning and grabbing the battery cells.

12. The fully automatic lithium battery injection production line according to claim 10, characterized in that: The unloading device (7) comprises an empty tray unloading module (E1), which sequentially delivers the stacked and stored empty trays (E11) to the battery cell loading station (E6), thereby loading the battery cells; A full tray stacking module (E2) is arranged side by side with the empty tray unloading module (E1) to stack the full trays (E12) loaded with full cells in sequence; The transfer module is arranged at the rear end of the full tray stacking module (E2) and the empty tray unloading module (E1), and transfers the full tray (E12) of the battery cell loading station (E6) to the full tray stacking module (E2) for stacking.

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