Vacuum packaging equipment and method for soft package battery

Abstract

The invention relates to the technical field of soft package battery production, in particular to soft package battery vacuum packaging equipment and method.The soft package battery is fed and supplied through a feeding conveying belt, and the soft package battery vacuum packaging equipment sequentially comprises a feeding positioning mechanism, a vacuum degassing unit, a cutting positioning mechanism, an air bag cutting mechanism and a fine sealing mechanism in the flowing direction of the soft package battery; a vacuum carrying mechanism is further arranged at the feeding positioning mechanism, the vacuum degassing unit and the cutting positioning mechanism; a cutting and conveying mechanism is further arranged at the position of the cutting and positioning mechanism and the air bag cutting mechanism. A fine sealing and conveying mechanism is arranged at the air bag cutting mechanism and the fine sealing mechanism; according to the vacuum packaging equipment and method for the soft package battery, a plurality of working stations and working procedures of vacuum packaging operation are integrated, the manual turnover time is shortened, the economic cost is reduced, and the overall vacuum packaging efficiency and quality of the soft package battery are improved.

Description

Technical Field

[0001] This invention relates to the field of pouch battery production technology, specifically to a vacuum packaging device and method for pouch batteries. Background Technology

[0002] Soft-pack lithium batteries are a type of lithium-ion battery that uses an aluminum-plastic composite film encapsulation shell. They belong to the category of liquid lithium-ion batteries combined with polymer shells. In the production and processing of soft-pack batteries, multiple encapsulation processes are often required to improve the quality of the final product, and soft-pack batteries usually also require vacuum degassing. Chinese invention patent application number CN202110840210.1, entitled "A Vacuum Packaging Device for a Soft Pack Battery," discloses a lower cavity transfer mechanism capable of driving the lower cavity sealing component seat to move laterally and vertically; multiple battery clamping components are evenly distributed on the lower cavity sealing component; an upper sealing lifting component is provided on the frame for driving the upper sealing component to move vertically; multiple sealing knife components for sealing the battery and piercing knife components for puncturing the air bag of the battery pack are provided on the upper sealing component; and a negative pressure connecting pipe is connected to the cylinder.

[0003] Chinese invention patent application number CN202110840210.1 discloses a vacuum packaging device for soft-pack lithium batteries, which includes a fixed plate, a lifting cylinder, a vacuum chamber, a lithium battery clamp, several pairs of end caps, and a driving mechanism. The vacuum chamber opens downwards, and the lithium battery clamp is located below the vacuum chamber. The stationary end cap is fixed in the vacuum chamber, and the movable end cap is horizontally slidably disposed in the vacuum chamber. The driving mechanism drives the movable end cap to slide horizontally so that the movable end cap and the stationary end cap move closer or further apart. The lifting cylinder is fixed to the fixed plate, and the output end of the lifting cylinder faces downwards and is fixedly connected to the bottom surface of the vacuum chamber, driving the vacuum chamber to move downwards to form a sealed inner cavity with the lithium battery clamp.

[0004] Although the two devices mentioned above can perform encapsulation and venting operations, they are not connected to other processes before and after vacuum encapsulation. Multiple workstations and equipment still need to be set up and manual operations are required to turn over the corresponding battery materials. There is still a lot of room for improvement in material turnover, manual transportation and quality control management. Therefore, there is an urgent need for a technical solution to improve the overall packaging quality of soft-pack batteries, increase overall processing efficiency, and achieve automated production. Summary of the Invention

[0005] The purpose of this invention is to provide a vacuum packaging device and method for soft-pack batteries, which integrates multiple vacuum packaging workstations and processes, reduces the time and economic cost of manual handling, and improves the overall efficiency and quality of vacuum packaging of soft-pack batteries.

[0006] To achieve the above objectives, the present invention provides the following technical solution; A vacuum packaging device for soft-pack batteries includes a feeding conveyor belt for feeding soft-pack batteries. Along the flow direction of the soft-pack batteries, it sequentially comprises a feeding and positioning mechanism, a vacuum degassing unit, a cutting and positioning mechanism, an air bag cutting mechanism, and a precision sealing mechanism. Vacuum conveying mechanisms are also provided at the feeding and positioning mechanism, the vacuum degassing unit, and the cutting and positioning mechanism. Cutting and conveying mechanisms are also provided at the cutting and positioning mechanism and the air bag cutting mechanism. Precision sealing conveying mechanisms are also provided at the air bag cutting mechanism and the precision sealing mechanism. The pouch batteries are moved by the feeding conveyor belt to the feeding and positioning mechanism, where the positioning mechanism adjusts the pouch batteries to the predetermined placement spacing. The vacuum conveying mechanism then moves the placed pouch batteries to the vacuum degassing unit for vacuum degassing and pre-sealing. The vacuum conveying mechanism then moves the pre-sealed pouch batteries from the vacuum degassing unit to the cutting and positioning mechanism, where the cutting and positioning mechanism performs secondary positioning and placement of the pre-sealed pouch batteries. The cutting and conveying mechanism then moves the pre-sealed pouch batteries to the air bag cutting mechanism for side air bag cutting. The fine sealing conveying mechanism then moves the side-cut pouch batteries to the fine sealing mechanism for final sealing. Finally, the fine sealing conveying mechanism removes the final-sealed pouch batteries and unloads them.

[0007] This invention also provides a vacuum packaging method for soft-pack batteries, used in the aforementioned vacuum packaging equipment for packaging soft-pack batteries; comprising the following steps: Step 1: The soft-pack battery is moved from the feeding conveyor belt to the feeding and positioning mechanism, where the positioning mechanism adjusts the soft-pack battery to a predetermined placement spacing; Step 2: The vacuum conveying mechanism moves the placed soft-pack battery to the vacuum degassing unit for vacuum degassing and pre-packaging; Step 3: The vacuum conveying mechanism moves the pre-sealed soft-pack battery from the vacuum degassing unit to the cutting and positioning mechanism, where the cutting and positioning mechanism performs secondary positioning of the pre-sealed soft-pack battery; Step 4: The cutting and conveying mechanism moves the secondary-placed soft-pack battery to the air bag cutting mechanism for side air bag cutting of the pre-sealed soft-pack battery; Step 5: The precision sealing conveying mechanism moves the side-cut soft-pack battery to the precision sealing mechanism for final sealing; The precision sealing conveying mechanism removes the final-sealed soft-pack battery for unloading.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: This pouch battery vacuum packaging equipment upgrades traditional manual handling to automated transport by integrating a feeding conveyor belt, vacuum conveying mechanism, cutting and conveying mechanism, and precision sealing conveying mechanism. This reduces turnaround time and costs, and minimizes human-related risks. Furthermore, by integrating the feeding and positioning mechanism, vacuum conveying mechanism, cutting and positioning mechanism, air bag cutting mechanism, and precision sealing mechanism, the equipment combines multiple positioning and multi-process operations of pouch battery vacuum packaging into a single machine, improving overall packaging efficiency and quality. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the feeding and sorting unit and positioning mechanism in this invention; Figure 4 This is a side view of the feeding and sorting unit and positioning mechanism in this invention; Figure 5 This is a three-dimensional structural diagram of the positioning mechanism in this invention; Figure 6 This is a three-dimensional structural diagram of the vacuum degassing unit in this invention; Figure 7 This is a front view schematic diagram of the vacuum degassing unit in this invention; Figure 8 This is an exploded view of the vacuum degassing unit in this invention; Figure 9 This is a three-dimensional structural diagram of the upper sealing mechanism in this invention; Figure 10 This is a three-dimensional structural diagram of the air bag cutting mechanism in this invention; Figure 11 This is a side view of the air bag cutting mechanism in this invention; Figure 12 This is an exploded view of the air bag cutting mechanism in this invention; Figure 13 This is a three-dimensional structural diagram of the precision sealing mechanism in this invention; Figure 14 This is an exploded view of the precision sealing mechanism in this invention; Figure 15 This is a three-dimensional structural diagram of the precision sealing and conveying mechanism in this invention.

[0010] Reference numerals: 101, feeding conveyor belt; 100, feeding and sorting unit; 110, sorting and conveying mechanism; 111, sorting displacement driver; 112, sorting rack; 113, sorting pick-up fixture; 120, identification module; 130, defective product conveying mechanism; 200, feeding and positioning mechanism; 210, forward push positioning assembly; 211, forward push driver; 212, forward push plate; 213, forward push connecting frame; 220, pressing and positioning assembly; 221, pressing and displacement driver; 222, pressing and lifting driver; 223, pressing plate; 2231, pressing section; 230, side push positioning assembly; 240, positioning base; 241, base guard; 300, vacuum degassing unit; 310, degassing base; 311, platform. 312. Displacement slide rail; 320. Platform displacement actuator; 321. Upper sealing base; 322. Upper sealing lifting actuator; 330. Degassing platform assembly; 331. Degassing positioning platform; 332. Platform moving linkage; 333. Degassing positioning seat; 334. Degassing positioning mechanism; 335. Encapsulation gap; 336. Pressing auxiliary strip; 340. Lower sealing mechanism; 341. Lower sealing base; 342. Lower sealing lifting actuator; 343. Lower heat sealing actuator; 344. Lower heat sealing strip; 345. Lower sealing base plate; 350. Pressing mechanism; 351. Pressing actuator; 352. Pressing mounting bracket; 353. Pressing push rod; 354. Sealing sleeve; 355. Anti-slip pressing block; 360. Upper sealing mechanism; 361. Upper sealing mounting platform; 362. Upper heat sealing assembly; 3621. Upper heat sealing driver; 3622. Upper heat sealing strip; 3623. Upper heat sealing connecting rod; 363. Puncture and clamping assembly; 3631. Puncture and clamping driver; 3632. Puncture and clamping frame; 3633. Upper clamping strip; 3634. Puncture knife assembly; 400. Vacuum conveying mechanism; 500. Cutting and positioning mechanism; 600. Air bag cutting mechanism; 610. Air bag cutting frame; 620. Air bag upper knife assembly; 621. Air bag upper knife driver; 622. Upper knife slide rail; 623. Upper knife holder plate; 624. Air bag upper knife; 630. Air bag lower knife assembly; 631. Lower knife adjusting screw; 632. Lower knife holder plate; 633. Air bag lower knife; 634. Lower knife slide rail; 640. Battery suction... Attached platform; 641, Battery adsorption substrate; 642, Battery adsorption nozzle; 643, Adsorption auxiliary baffle; 650, Air bag detection assembly; 651, Detection rack; 652, Infrared detector; 700, Fine sealing mechanism; 710, Fine sealing frame; 720, Upper fine sealing assembly; 730, Lower fine sealing strip; 740, Fine sealing positioning assembly; 741, Fine sealing lifting driver; 742, Fine sealing positioning lateral driver; 743, Fine sealing lateral lever; 744, Fine sealing positioning longitudinal driver; 745, Fine sealing longitudinal lever; 746, Fine sealing substrate; 747, Positioning block; 750, Fine sealing pressing mechanism; 751, Fine sealing pressing driver; 752, Final sealing strip; 800, Cutting and conveying mechanism; 900, Fine sealing conveying mechanism;910. Precision sealing conveyor displacement drive; 920. Precision sealing conveyor propulsion drive; 930. Precision sealing conveyor lifting drive; 940. Precision sealing conveyor forklift; 950. Precision sealing conveyor tooling. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as the technical effects, configurations, and components of this embodiment are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0012] It should be understood that the phrase "an embodiment" or "this embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "an embodiment" or "this embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0013] Example 1: This embodiment provides a vacuum packaging device for soft-pack batteries. Please refer to... Figures 1-2 As shown, the equipment uses a feeding conveyor belt 101 to feed soft-pack batteries. Along the flow direction of the soft-pack batteries, it sequentially includes a feeding and positioning mechanism 200, a vacuum degassing unit 300, a cutting and positioning mechanism 500, an air bag cutting mechanism 600, and a precision sealing mechanism 700. A vacuum conveying mechanism 400 is also provided at the feeding and positioning mechanism 200, the vacuum degassing unit 300, and the cutting and positioning mechanism 500; a cutting and conveying mechanism 800 is also provided at the cutting and positioning mechanism 500 and the air bag cutting mechanism 600; and a precision sealing and conveying mechanism 900 is provided at the air bag cutting mechanism 600 and the precision sealing mechanism 700. The pouch battery is moved from the feeding conveyor belt 101 to the feeding and positioning mechanism 200, where the positioning mechanism 200 adjusts the pouch battery to the predetermined placement spacing. The vacuum conveying mechanism 400 moves the placed pouch battery to the vacuum degassing unit 300 for vacuum degassing and pre-sealing. The vacuum conveying mechanism 400 moves the pre-sealed pouch battery from the vacuum degassing unit 300 to the cutting and positioning mechanism 500, where the cutting and positioning mechanism 500 performs secondary positioning and placement of the pre-sealed pouch battery. The cutting and conveying mechanism 800 moves the secondary-placed pouch battery to the air bag cutting mechanism 600 for side air bag cutting of the pre-sealed pouch battery. The fine sealing conveying mechanism 900 moves the side-cut pouch battery to the fine sealing mechanism 700 for final sealing of the pouch battery. The fine sealing conveying mechanism 900 removes the final-sealed pouch battery and unloads it.

[0014] A feeding conveyor belt 101 continuously transports the pouch batteries to be packaged, achieving a stable and continuous supply. The feeding and positioning mechanism 200 performs the first positioning of the incoming pouch batteries, further improving feeding stability and providing standardized and stable placement for subsequent pouch battery production and processing. The vacuum conveying mechanism 400 enables unmanned and rapid transport, moving the positioned pouch batteries to the vacuum degassing unit 300 for vacuum degassing and the first pre-packaging. The vacuum conveying mechanism 400 then transports the degassed and pre-sealed pouch batteries to the cutting and positioning mechanism 500 for secondary positioning, providing standardized placement for subsequent air bag cutting. The cutting and conveying mechanism 800 transports the pouch batteries to the air bag cutting mechanism 600 to cut off the excess length of the sealing air bag, preparing for the final sealing step. The fine sealing conveying mechanism 900 sends the air bag-cut pouch batteries to the fine sealing mechanism 700 for the second fine sealing, completing the overall final sealing of the pouch batteries.

[0015] The traditional manual handling is upgraded to automated transfer by the feeding conveyor belt 101, vacuum conveying mechanism 400, cutting and conveying mechanism 800 and precision sealing conveying mechanism 900, shortening the turnaround time and cost and reducing human risk factors; and by integrating the feeding and positioning mechanism 200, vacuum conveying mechanism 400, cutting and positioning mechanism 500, air bag cutting mechanism 600 and precision sealing mechanism 700, the multiple positioning and multi-process operation of soft pack battery vacuum sealing is integrated into one machine, improving the overall sealing efficiency and quality.

[0016] Example 2: This embodiment is based on Embodiment 1, and provides further explanation and description of the feeding and sorting unit 100.

[0017] refer to Figures 3-5A feeding and sorting unit 100 is also provided between the feeding conveyor belt 101 and the feeding and positioning mechanism 200. The feeding and sorting unit 100 includes a sorting and conveying mechanism 110, an identification module 120, and a defective product conveying mechanism 130. Both the identification module 120 and the sorting and conveying mechanism 110 are connected to an external industrial control host. The sorting and conveying mechanism 110 transports the soft-pack batteries from the feeding conveyor belt 101 and passes them through the identification module 120. The identification module 120 transmits the identified soft-pack battery information to the industrial control host. The industrial control host judges the identification information and controls the sorting and conveying mechanism 110 to transport the identified soft-pack batteries to the defective product conveying mechanism 130 or the feeding and positioning mechanism 200.

[0018] The feeding and sorting unit 100 is used to perform quality inspection on the incoming materials from the feeding conveyor belt 101; the identification module 120 can be a vision camera, and the industrial control host is an external computer or controller device that stores relevant detection algorithms. It can judge the information of the soft-pack batteries obtained by the identification module 120 and then control the operation of the sorting and conveying mechanism 110; to ensure the quality of the soft-pack batteries flowing into the subsequent process, improve the overall production and processing efficiency, and reduce the labor and economic costs of rework.

[0019] The sorting and conveying mechanism 110 includes a sorting displacement driver 111, a sorting rack 112 driven and connected to the sorting displacement driver 111, and a sorting pick-up fixture 113 mounted on the sorting rack 112. The sorting pick-up fixture 113 is used to pick up and place pouch batteries. During operation, the sorting displacement driver 111 drives the sorting rack 112 to move, thereby moving the sorting pick-up fixture 113, so that the sorting pick-up fixture 113 reciprocates at the feeding conveyor belt 101, the identification module 120, the defective product conveying mechanism 130, and the loading and positioning mechanism 200. The sorting displacement driver 111 adopts a high-precision linear motor module, and the sorting pick-up fixture 113 adopts a tooling module such as a suction cup or gripper that can pick up and place pouch batteries. The defective product conveying mechanism 130 adopts a linear conveyor belt module to realize the handling and conveying of pouch batteries.

[0020] The feeding and positioning mechanism 200 includes a positioning base 240, a forward-push positioning component 210, a pressing positioning component 220, and a side-push positioning component 230 mounted on the positioning base 240; a base guard 241 is also provided on the positioning base 240; the side-push positioning component 230 is drivenly connected to the forward-push positioning component 210; the pressing positioning component 220 is in a non-positioned state, the soft-pack battery is moved to the positioning base 240, the pressing positioning component 220 moves above the soft-pack battery, the forward-push positioning component 210 pushes the soft-pack battery to move on the positioning base 240, and the side-push positioning component 230 moves simultaneously and pushes the soft-pack battery under the drive of the forward-push positioning component 210. The forward-push positioning component 210 and the side-push positioning component 230 push the soft-pack battery to contact the base guard 241 to achieve the shaping and positioning of the soft-pack battery.

[0021] The feeding and positioning mechanism 200 is used to carry and position the qualified soft-pack batteries transported by the sorting and conveying mechanism 110. First, the height is limited by the pressing and positioning component 220, and then the side-push positioning component 230 and the forward-push positioning component 210 push the soft-pack battery to contact the base guard edge 241 to achieve planar position calibration. The pressing and positioning component 220 can prevent the battery from tipping over and deforming during the planar position calibration process, improve the stability of the overall positioning process, and ensure the quality of the soft-pack battery.

[0022] The pressing and positioning assembly 220 includes a pressing displacement driver 221, a pressing lifting driver 222, and a pressing plate 223. The pressing lifting driver 222 is driven to the pressing displacement driver 221, and the pressing plate 223 is driven to the pressing lifting driver 222. The pressing plate 223 has multiple pressing parts 2231. The pressing lifting driver 222 and the pressing displacement driver 221 drive the pressing plate 223 to move to a predetermined height of the soft-pack battery on the positioning base 240, assisting the forward positioning assembly 210 and the side-push positioning assembly 230 in positioning the soft-pack battery at a certain height. The pressing displacement driver 221 and the pressing lifting driver 222 use a cylinder or an electric cylinder to drive the pressing plate 223. The pressing plate 223 is also provided with multiple forked pressing parts 2231 that can be used to press the soft-pack battery.

[0023] The forward positioning assembly 210 includes a forward drive driver 211, a forward connecting frame 213 driven and connected to the forward drive driver 211, and a forward plate 212 mounted on the forward connecting frame 213. The forward connecting frame 213 drives and connects to the side positioning assembly 230. The forward drive driver 211 drives the forward connecting frame 213, thereby moving the forward plate 212 and pushing the pouch battery to move. At the same time, the forward connecting frame 213 drives and connects to the side positioning assembly 230, which slides laterally on the positioning base 240, thereby pushing the pouch battery to move from the side. The forward drive driver 211 uses a cylinder or electric cylinder to drive the forward connecting frame 213 to move. To achieve the forward pushing of the soft-pack battery by the forward push plate 212, the side push positioning assembly 230 includes a side push drive plate 232, on which a side push fork plate 231 and a side push roller 233 are mounted; the forward push connecting frame 213 has a drive groove 215; the side push roller 233 is assembled in the drive groove 215, and the side push drive plate 232 is slidably mounted on the positioning base 240 by a slide rail; the forward push connecting frame 213 pushes the side push roller 233 to move, and the drive groove 215 converts the push into a lateral thrust, thereby driving the side push fork plate 231 on the side push drive plate 232 to move, so that the side push fork plate 231 pushes the soft-pack battery from the side.

[0024] The movement of the forward push connecting frame 213 is divided into a lateral pushing action by the drive sloping groove 215 and the side push roller 233, so that the side push fork plate 231 can push the soft pack battery from the side, and cooperate with the base guard edge 241 to abut and position it; the base guard edge 241 is provided with bidirectional baffles for blocking and positioning.

[0025] Example 3: This embodiment, based on Embodiment 1, further describes the vacuum conveying mechanism 400. (Refer to...) Figures 6-9 The structure uses a linear motor module in conjunction with a battery clamping fixture to transport soft-pack batteries. The linear motor module forms a span covering the feeding and positioning mechanism 200, the vacuum degassing unit 300, and the cutting and positioning mechanism 500, so as to achieve full coverage of the vacuum degassing and pre-sealing operation end of the soft-pack battery, reduce the space occupied by turnover equipment, and improve turnover and handling efficiency.

[0026] The vacuum degassing unit 300 includes a degassing base 310, a degassing platform assembly 330 mounted on the degassing base 310, a lower sealing mechanism 340 mounted on the lower end face of the degassing platform assembly, an upper sealing base 320 mounted on the degassing base 310, and a pressing mechanism 350 and an upper sealing mechanism 360 mounted on the upper sealing base 320; the actuating end of the lower sealing mechanism 340 extends into the degassing platform assembly 330; both the lower sealing mechanism 340 and the upper sealing base 320 are connected to external vacuum equipment; The vacuum conveying mechanism 400 transports the pouch battery from the feeding and positioning mechanism 200 to the degassing platform assembly 330. The degassing platform assembly 330 pushes the pouch battery to the designated position and assists in positioning. The upper sealing mechanism 360 descends so that the degassing platform assembly 330, the lower sealing mechanism 340 and the upper sealing base 320 enclose a degassing cavity. The pressing mechanism 350 presses the pouch battery and performs vacuuming in the degassing cavity. The lower sealing mechanism 240 rises and the upper sealing mechanism 360 descends to perform vacuum degassing and sealing of the pouch battery.

[0027] The vacuum degassing unit 300 is used to discharge waste liquid and excess gas in the soft-pack battery and perform pre-sealing. The degassing platform assembly 330 assists in positioning the incoming soft-pack battery and, together with the upper sealing base 320 and the lower sealing mechanism 340, forms a degassing cavity. The negative pressure causes the waste gas and waste liquid in the soft-pack battery to be discharged. The lower sealing mechanism 340 and the upper sealing base 320 perform heat sealing on the soft-pack battery, which has been vacuum degassed, to complete the pre-sealing operation. The vacuum degassing unit 300 is an integrated unit that realizes three-stage operation of soft-pack battery positioning, liquid drainage and degassing, and pre-sealing, improving production efficiency and reducing risks during turnover. The degassing base 310 is equipped with a platform displacement driver 312 and a platform displacement slide rail 311. The degassing platform assembly 330 is slidably installed with the degassing base 310 using the platform displacement slide rail 311. The actuator of the platform displacement driver 312 drives the degassing platform assembly 330. The platform displacement driver 312 uses a start push rod to push the degassing platform assembly 330 to slide on the degassing base 310, realizing automated reception of soft-pack battery materials and transportation to the corresponding degassing and pre-sealing station.

[0028] The upper sealing base 320 is assembled with the degassing base 310 using a guide rod, and the upper sealing base 320 is also equipped with an upper sealing lifting driver 321. The upper sealing lifting driver 321 is installed on the upper sealing base 321, and the execution end of the upper sealing lifting driver 321 is connected to the degassing base 310. The upper sealing lifting driver 321 is driven by an electric or hydraulic cylinder to ensure that the pressing mechanism 350 and the upper sealing mechanism 360 on the upper sealing base 320 can reach the working position to perform pressing and sealing operations.

[0029] The degassing platform assembly 330 includes a degassing positioning platform 331 and a degassing positioning mechanism 334. The degassing positioning platform 331 contains a degassing positioning seat 333 and a clamping auxiliary strip 336. The degassing positioning mechanism 334 is mounted on the degassing positioning platform 331. A sealing gap 335 is reserved between the degassing positioning seat 333 and the clamping auxiliary strip 336 for assembling the lower sealing mechanism 340. A platform moving link 332 is provided on the degassing positioning platform 331, and the platform moving link 332 is driven by the actuator of the platform displacement driver 312. The platform displacement driver 312 drives the degassing positioning platform 331 to a designated position to await the loading of the pouch battery. The degassing positioning mechanism 334 pushes and positions the pouch battery on the degassing positioning platform 331. After positioning, the platform displacement driver 312 moves the degassing positioning platform 331 to the upper sealing base 320, waiting for the upper sealing base 320 to descend and close; the pressing mechanism 350 presses down and contacts the pressing auxiliary strip 336 to press the edge of the soft pack battery; the lower sealing mechanism 340 and the upper sealing mechanism 360 seal the soft pack battery in the sealing gap 335; the degassing positioning mechanism 334 is similar to the technical solutions of the side-push positioning component 230 and the forward-push positioning component 210, realizing the use of a single driver to simultaneously push and position the forward direction and measurement; and leaves a sealing gap 335 for installation with the lower sealing mechanism 340; the degassing platform component 330 realizes the overall drive of the lower sealing mechanism 340, driving the lower sealing mechanism 340 to the working area.

[0030] The lower sealing mechanism 340 includes a lower sealing base plate 345 mounted on the lower end face of the degassing positioning platform 331 via a guide rod, a lower sealing base 341 slidably sleeved on the guide rod, and a lower sealing lifting actuator 342 mounted on the lower sealing base plate 345 to drive the lower sealing base 341 to rise and fall; the lower sealing base 341 is also equipped with a lower heat sealing actuator 343, the actuator end of which passes through the lower sealing base 341 and is provided with a lower heat sealing strip 344; the lower sealing lifting actuator 342 drives the lower sealing base 341 to move with the degassing positioning platform 331. Platform 331 has formed a degassing cavity. The lower heat seal driver 343 drives the lower heat seal strip 344 and the upper sealing mechanism 360 to seal the soft pack battery in the sealing gap 335. During the sealing process, the lower sealing mechanism 340 closes to form a degassing cavity, and the lower heat seal strip 344 and the upper sealing mechanism 360 work together. The lower sealing base 341 and the upper sealing base 320 are connected to an external vacuum pump and are connected to a waste liquid collection pipe 370 so as to avoid leakage and contamination of internal liquid or waste gas during the venting and drainage process.

[0031] The clamping mechanism 350 includes a clamping mounting bracket 352 disposed on the upper sealing base 320, a clamping driver 351 mounted on the clamping mounting bracket 352, and a clamping push rod 353 driven and connected to the clamping driver 351. The clamping push rod 353 extends into the degassing cavity through the upper sealing base 320 via a sealing sleeve 354, and an anti-slip clamping block 355 is installed at the end of the clamping push rod 353. The clamping driver 351 drives the clamping push rod 353 to descend, thereby causing the anti-slip clamping block 355 to descend and clamp and position the soft-pack battery.

[0032] The clamping mechanism 350 can assist in clamping the pouch battery, preventing the pouch battery from shifting during the operation of the upper sealing mechanism 360 and the lower sealing mechanism 340, thereby improving the overall production and processing quality of the pouch battery, reducing defective products, and increasing operational efficiency.

[0033] The sealing mechanism 360 includes a sealing mounting platform 361, a heat sealing assembly 362, and a puncture and clamping assembly 363. The heat sealing assembly 362 includes a heat sealing driver 3621 mounted on the sealing mounting platform 361, a heat sealing connecting rod 3623 driven by the heat sealing driver 3621, and a heat sealing strip 3622 mounted at the end of the heat sealing connecting rod 3623. The puncture and clamping assembly 363 clamps the edge of the pouch battery and punctures several vent holes, allowing waste liquid and excess gas inside the pouch battery to escape. Vacuum negative pressure enters the degassing chamber, and the upper heat-sealing driver 3621 drives the upper heat-sealing strip 3622 to descend and the lower sealing mechanism 340 to seal the degassed and drained soft-pack battery in an air bag. The upper sealing mechanism 360 integrates the pressing and piercing action and the heat-sealing action. The piercing and pressing component 363 can pierce small holes at preset positions and intervals in the soft-pack battery so that the waste liquid and waste gas inside the soft-pack battery can be discharged into the degassing chamber. Then, the upper heat-sealing strip 3622 cooperates with the lower sealing mechanism to heat-pack the soft-pack battery to complete the vacuum pre-sealing.

[0034] The puncture and clamping assembly 363 includes a puncture and clamping driver 3631 mounted on the upper sealing mounting platform 361, a puncture and clamping frame 3632 driven and connected to the actuating end of the puncture and clamping driver 3631, and a puncture knife assembly 3634 and an upper clamping bar 3633 mounted on the puncture and clamping frame 3632. The actuating end of the puncture and clamping driver 3631 passes through the upper sealing mounting platform 361 and drives the puncture and clamping frame 3632 to descend. The upper clamping bar 3633 first contacts and clamps the edge of the pouch battery air bag, and the puncture knife assembly 3634 punctures the pouch battery to create several air vents. The puncture and clamping actuator 3631 is driven by a cylinder such as an electric cylinder or a pneumatic cylinder to drive the puncture knife assembly 3634 and the upper clamping bar 3633 to descend. The upper clamping bar 3633 and the puncture and clamping frame 3632 are flexibly installed, so that the upper clamping bar 3633 contacts and clamps the edge of the soft-pack battery first, but still does not affect the puncture and clamping frame 3632 driving the puncture knife assembly 3634 to puncture the air bag of the soft-pack battery to de-gas it. The puncture, clamping and heat sealing actions are integrated to reduce the space occupied by the equipment, improve the processing efficiency of a single station, and thus improve the overall production efficiency and quality.

[0035] Example 4: This embodiment is based on Embodiment 1 and provides a further description of the cutting and positioning mechanism 500.

[0036] refer to Figures 10-12 The cutting and positioning mechanism 500 has the same technical solution as the feeding and positioning mechanism 200. When the soft-pack battery is moved to the cutting and positioning mechanism 500 by the vacuum conveying mechanism 400, it is positioned and shaped for the second time to facilitate subsequent cutting operations. The specific technical details of the cutting and positioning mechanism 500 are not described in detail here. The air bag cutting mechanism 600 includes an air bag cutting frame 610 and a battery adsorption platform 640. The air bag cutting frame 610 is equipped with an air bag upper cutter assembly 620, an air bag lower cutter assembly 630, and an air bag detection assembly 650. The cutting and conveying mechanism 800 transports the vacuum-degassed and secondarily positioned soft-pack battery from the cutting and positioning mechanism 500 to the battery adsorption platform 640. The air bag upper cutter assembly 620 and the air bag lower cutter assembly 630 cut off the excess air bag of the soft-pack battery. When the sealing and conveying mechanism 900 removes the soft-pack battery from the battery adsorption platform 640, the air bag detection assembly 650 detects the soft-pack battery.

[0037] The pouch battery is moved from the cutting and positioning mechanism 500 to the battery adsorption platform 640 by the cutting and conveying mechanism 800 for positioning and adsorption. The cutting and conveying mechanism 800 only involves the position in one direction and does not change the positioning of the cutting and positioning mechanism 500 in the other direction. After the battery adsorption platform 640 positions the pouch battery, the air bag upper cutter assembly 620 and the air bag lower cutter assembly 630 close to cut the excess pouch battery air bag. When the precision sealing and conveying mechanism 900 transports the pouch battery with the cut air bag, it passes through the air bag detection assembly 650. If the cut length of the air bag is not up to the requirement or the cut is incorrect, the longer air bag will trigger the air bag detection assembly 650 to detect whether the cut is successful. The cutting and conveying mechanism 800 includes a linear motor module and a pouch battery picking fixture to move the pouch battery from the cutting and positioning mechanism 500 to the battery adsorption platform 640. During the conveying process, only the position of the pouch battery on a single axis is moved.

[0038] The airbag upper knife assembly 620 includes an airbag upper knife driver 621, an upper knife holder plate 623 driven and connected to the upper knife driver 621, and an airbag upper knife 624 mounted on the upper knife holder plate 623; the upper knife holder plate 623 is slidably connected to the airbag cutting frame 610 via an upper knife slide rail 622; the airbag lower knife assembly 630 includes a lower knife holder plate 632, an airbag lower knife 633 mounted on the lower knife holder plate 632, and a lower knife adjusting screw 631 mounted on the airbag cutting frame 610; The blade holder plate 632 is slidably connected to the air bag cutting frame 610 via the lower blade slide rail 634; the lower blade adjusting screw 631 drives the lower blade holder plate 632 to move; the lower blade adjusting screw 631 adjusts the height of the air bag lower blade 633, and when the cutting and conveying mechanism 800 transports the soft-pack battery to the battery adsorption platform 640, the air bag upper blade driver 621 drives the upper blade holder plate 623 to descend, thereby driving the air bag upper blade 624 and the air bag lower blade 633 to close, thus completing the cutting of excess air bags.

[0039] The upper blade driver 621 uses a cylinder or electric cylinder to drive the upper blade 6 of the air bag to move. The lower blade adjusting screw 631 can adjust the height of the lower blade as needed to accommodate more battery models and installation requirements. The battery adsorption platform 640 includes a battery adsorption base plate 641 and a battery adsorption nozzle 642 embedded in the battery adsorption base plate 641. The battery adsorption base plate 641 is also provided with an adsorption auxiliary baffle 643 to facilitate the placement and positioning of the soft-pack batteries transported by the cutting and conveying mechanism 800. The air bag detection component 650 includes a detection frame plate 651 and an infrared detector 652 installed on the detection frame plate 651. The detection frame plate 651 is located on the discharge side after the soft-pack battery is cut. The infrared detector 652 is a through-beam detection module. When there is a problem with the cutting of the soft-pack battery air bag and the length exceeds the specified requirements, the through-beam fiber of the infrared detector 652 will be triggered during the transfer and transportation process.

[0040] Example 5: This embodiment is based on Embodiment 1 and provides a further description of the precision sealing mechanism 700.

[0041] refer to Figures 13-15 The precision sealing mechanism 700 includes a precision sealing frame 710 and a precision sealing positioning component 740. The precision sealing frame 710 is equipped with an upper precision sealing component 720, a lower precision sealing strip 730, and a precision sealing pressing mechanism 750. The precision sealing conveying mechanism 900 moves the pouch battery, which has been cut at the air bag cutting mechanism 600, to the precision sealing positioning component 740 for positioning. The precision sealing pressing mechanism 750 presses the pouch battery tightly, and the upper precision sealing component 720 and the lower precision sealing strip 730 seal the edges of the pouch battery to complete the final seal. The precision sealing mechanism 700 includes a further secondary sealing of the cut pouch battery air bag to ensure the final product's sealing quality and improve the overall product quality of the pouch battery for subsequent processing operations.

[0042] The precision sealing positioning assembly 740 includes a precision sealing lifting driver 741 and a precision sealing substrate 746 driven and connected to the precision sealing lifting driver 741. The precision sealing substrate 746 is also provided with a precision sealing positioning lateral driver 742 and a precision sealing positioning longitudinal driver 744. A positioning block 747 is provided on the precision sealing substrate 746. The precision sealing positioning lateral driver 742 and the precision sealing positioning longitudinal driver 744 respectively drive the precision sealing lateral lever 743 and the precision sealing longitudinal lever 745 to make the pouch battery abut against the positioning block 747 on the precision sealing substrate 746, thereby achieving precise positioning of the pouch battery. The precision sealing positioning assembly 740 positions the pouch battery. Both the precision sealing positioning lateral driver 742 and the precision sealing positioning longitudinal driver 744 are pneumatic or electric cylinders to drive the precision sealing lateral lever 743 and the precision sealing longitudinal lever 745 to move the pouch battery to a designated position on the precision sealing substrate 746 for precision sealing operation.

[0043] The precision sealing and pressing mechanism 750 includes a precision sealing and pressing driver 751 and a final sealing bar 752. The precision sealing and pressing driver 751 drives the final sealing bar 752 to press the soft-pack battery, which has been positioned by the precision sealing positioning component 740, and waits for the upper precision sealing component 720 and the lower precision sealing bar 730 to encapsulate it. It also includes a precision sealing and conveying mechanism 900, which includes a precision sealing and conveying displacement driver 910, a precision sealing and conveying push driver 920, a precision sealing and conveying lifting driver 930, and a precision sealing and conveying fork arm 940. Each end of the precision sealing and conveying fork arm 940 is provided with a precision sealing and conveying fixture 950. The precision sealing and conveying displacement driver 910 drives the precision sealing and conveying push driver 920 to move, which in turn drives the precision sealing and conveying lifting driver 930 to move, and the precision sealing and conveying lifting driver 930 drives the precision sealing and conveying fork arm 940 to rise and fall. The precision sealing and conveying fork arm 940 can move between the air bag cutting mechanism 600 and the precision sealing mechanism 700. The precision sealing and conveying displacement driver 910 adopts a linear motor module, and the precision sealing and conveying push driver 920 and the precision sealing and conveying lifting driver 930 adopt cylinders or electric cylinders. This drives the precision sealing and conveying fork arm 940 to move as a whole. The precision sealing and conveying fork arm 940 has a double fork wall structure, and the spacing of the two ends matches the spacing of the air bag cutting mechanism 600 and the precision sealing mechanism 700. This allows the precision sealing and conveying fixtures 950 on both ends to work simultaneously. One precision sealing and conveying fixture 950 transports the soft-pack battery from the air bag cutting mechanism 600 to the precision sealing mechanism 700, and the other precision sealing and conveying fixture 950 can remove the precision-sealed soft-pack battery from the precision sealing mechanism 700. This achieves synchronous transportation.

[0044] Example 6: This embodiment, based on Embodiment 1, provides a vacuum packaging method for a pouch battery, used to package a pouch battery using the aforementioned vacuum packaging equipment; it includes the following steps: Step 1: The soft-pack batteries move from the self-feeding conveyor belt 101 to the feeding and positioning mechanism 200, where the positioning mechanism 200 adjusts the soft-pack batteries to the predetermined placement spacing. Step 2: The vacuum conveying mechanism 400 moves the placed soft-pack batteries to the vacuum degassing unit 300 for vacuum degassing and pre-sealing. Step 3: The vacuum conveying mechanism 400 moves the pre-sealed soft-pack battery from the vacuum degassing unit 300 to the cutting and positioning mechanism 500, where the cutting and positioning mechanism 500 performs secondary positioning and placement of the pre-sealed soft-pack battery. Step 4: The cutting and conveying mechanism 800 moves the pouch battery after the second placement to the air bag cutting mechanism 600 to cut the side air bag of the pre-sealed pouch battery. Step 5: The precision sealing and conveying mechanism 900 moves the side-cut soft-pack battery to the precision sealing mechanism 700 for final sealing; the precision sealing and conveying mechanism 900 removes the final-sealed soft-pack battery and unloads it.

[0045] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the scope defined by the spirit of the invention.

Claims

1. A vacuum packaging device for soft-pack batteries, wherein a feeding conveyor belt (101) is used to feed soft-pack batteries, characterized in that, Along the flow direction of the soft-pack battery, the assembly includes, in sequence, a feeding and positioning mechanism (200), a vacuum degassing unit (300), a cutting and positioning mechanism (500), an air bag cutting mechanism (600), and a precision sealing mechanism (700); a vacuum conveying mechanism (400) is also provided at the feeding and positioning mechanism (200), the vacuum degassing unit (300), and the cutting and positioning mechanism (500); a cutting and conveying mechanism (800) is also provided at the cutting and positioning mechanism (500) and the air bag cutting mechanism (600); and a precision sealing and conveying mechanism (900) is provided at the air bag cutting mechanism (600) and the precision sealing mechanism (700).

2. The vacuum packaging equipment for a soft-pack battery according to claim 1, characterized in that, A feeding and sorting unit (100) is also provided between the feeding conveyor belt (101) and the feeding and positioning mechanism (200); the feeding and sorting unit (100) includes a sorting and conveying mechanism (110), an identification module (120) and a defective product conveying mechanism (130); the identification module (120) and the sorting and conveying mechanism (110) are both connected to an external industrial control host.

3. The vacuum packaging equipment for a soft-pack battery according to claim 2, characterized in that, The feeding and positioning mechanism (200) includes a positioning base (240), a forward positioning component (210), a pressing positioning component (220), and a side-push positioning component (230) installed on the positioning base (240); the positioning base (240) is also provided with a base guard (241); the side-push positioning component (230) is driven to connect with the forward positioning component (210).

4. The vacuum packaging equipment for a soft-pack battery according to claim 1, characterized in that, The vacuum degassing unit (300) includes a degassing base (310), a degassing platform assembly (330) mounted on the degassing base (310), a lower sealing mechanism (340) mounted on the lower end face of the degassing platform assembly, an upper sealing base (320) mounted on the degassing base (310), and a pressing mechanism (350) and an upper sealing mechanism (360) mounted on the upper sealing base (320); the actuating end of the lower sealing mechanism (340) extends into the degassing platform assembly (330); both the lower sealing mechanism (340) and the upper sealing base (320) are connected to an external vacuum pumping device.

5. The vacuum packaging equipment for a soft-pack battery according to claim 4, characterized in that, The degassing base (310) is provided with a platform displacement driver (312) and a platform displacement slide rail (311); the degassing platform assembly (330) is slidably installed with the degassing base (310) using the platform displacement slide rail (311); the actuator of the platform displacement driver (312) drives the degassing platform assembly (330). The upper sealing base (320) is assembled with the degassing base (310) using a guide rod, and the upper sealing base (320) is also provided with an upper sealing lifting driver (321). The upper sealing lifting driver (321) is installed on the upper sealing base (321), and the execution end of the upper sealing lifting driver (321) is connected to the degassing base (310). The degassing platform assembly (330) includes a degassing positioning platform (331) and a degassing positioning mechanism (334). The degassing positioning platform (331) is provided with a degassing positioning seat (333) and a pressing auxiliary strip (336). The degassing positioning mechanism (334) is installed on the degassing positioning platform (331). A sealing gap (335) for assembling the lower sealing mechanism (340) is reserved between the degassing positioning seat (333) and the pressing auxiliary strip (336). A platform moving link (332) is provided on the degassing positioning platform (331), and the platform moving link (332) is driven connected to the execution end of the platform displacement driver (312).

6. The vacuum packaging equipment for a soft-pack battery according to claim 5, characterized in that, The lower sealing mechanism (340) includes a lower sealing base plate (345) mounted on the lower end face of the degassing positioning platform (331) by means of a guide rod, a lower sealing base (341) slidably sleeved on the guide rod, and a lower sealing lifting driver (342) mounted on the lower sealing base plate (345) to drive the lower sealing base (341) to rise and fall; the lower sealing base (341) is also equipped with a lower heat sealing driver (343), the execution end of the lower heat sealing driver (343) passes through the lower sealing base (341) and is provided with a lower heat sealing strip (344).

7. The vacuum packaging equipment for a soft-pack battery according to claim 4, characterized in that, The upper sealing mechanism (360) includes an upper sealing mounting platform (361), an upper heat sealing assembly (362), and a puncture and clamping assembly (363); the upper heat sealing assembly (362) includes an upper heat sealing driver (3621) disposed on the upper sealing mounting platform (361), an upper heat sealing connecting rod (3623) drivenly connected to the upper heat sealing driver (3621), and an upper heat sealing strip (3622) installed at the end of the upper heat sealing connecting rod (3623). The puncture and clamping assembly (363) includes a puncture and clamping driver (3631) disposed on the upper sealing mounting platform (361), a puncture and clamping frame (3632) driven and connected to the actuating end of the puncture and clamping driver (3631), and a puncture knife assembly (3634) and an upper clamping bar (3633) installed on the puncture and clamping frame (3632).

8. The vacuum packaging equipment for a soft-pack battery according to claim 1, characterized in that, The air bag cutting mechanism (600) includes an air bag cutting frame (610) and a battery adsorption platform (640); the air bag cutting frame (610) is equipped with an air bag upper cutting assembly (620), an air bag lower cutting assembly (630) and an air bag detection assembly (650). The air bag upper knife assembly (620) includes an air bag upper knife driver (621), an upper knife holder plate (623) driven and connected to the upper knife driver (621), and an air bag upper knife (624) mounted on the upper knife holder plate (623); the upper knife holder plate (623) is slidably connected to the air bag cutting frame (610) by an upper knife slide rail (622); The air bag lower cutter assembly (630) includes a lower cutter holder plate (632), an air bag lower cutter (633) mounted on the lower cutter holder plate (632), and a lower cutter adjusting screw (631) mounted on the air bag cutting frame (610). The lower cutter holder plate (632) is slidably connected to the air bag cutting frame (610) by a lower cutter slide rail (634). The lower cutter adjusting screw (631) drives the lower cutter holder plate (632) to move.

9. A vacuum packaging device for a soft-pack battery according to claim 1, characterized in that, The precision sealing mechanism (700) includes a precision sealing frame (710) and a precision sealing positioning component (740); the precision sealing frame (710) is equipped with an upper precision sealing component (720), a lower precision sealing strip (730) and a precision sealing pressing mechanism (750). The precision sealing positioning assembly (740) includes a precision sealing lifting driver (741) and a precision sealing substrate (746) drivenly connected to the precision sealing lifting driver (741); the precision sealing substrate (746) is also provided with a precision sealing positioning horizontal driver (742) and a precision sealing positioning vertical driver (744); a positioning block (747) is provided on the precision sealing substrate (746). The precision sealing positioning lateral driver (742) and precision sealing positioning longitudinal driver (744) respectively drive the precision sealing lateral lever (743) and precision sealing longitudinal lever (745) to make the pouch battery abut against the positioning block (747) on the precision sealing substrate (746), thereby achieving precise positioning of the pouch battery.

10. A method for vacuum packaging a soft-pack battery, characterized in that, The method for encapsulating a pouch battery using the pouch battery vacuum encapsulation equipment according to any one of claims 1-9 includes the following steps; Step 1: The soft-pack battery moves from the self-feeding conveyor belt (101) to the feeding and positioning mechanism (200), where the positioning mechanism (200) adjusts the soft-pack battery to the predetermined placement spacing; Step 2: The vacuum conveying mechanism (400) moves the placed pouch batteries to the vacuum degassing unit (300) to degas the pouch batteries and then pre-seal them. Step 3: The vacuum conveying mechanism (400) moves the pre-sealed soft-pack battery from the vacuum degassing unit (300) to the cutting and positioning mechanism (500), and the cutting and positioning mechanism (500) performs secondary positioning and placement of the pre-sealed soft-pack battery; Step 4: The cutting and conveying mechanism (800) moves the pouch battery after the second placement to the air bag cutting mechanism (600) to cut the side air bag of the pre-sealed pouch battery. Step 5: The precision sealing and conveying mechanism (900) moves the side-cut soft-pack battery to the precision sealing mechanism (700) for final sealing; the precision sealing and conveying mechanism (900) removes the final-sealed soft-pack battery and unloads it.

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