Soft package lithium cell side edge glue sealing device

Abstract

The invention relates to the technical field of lithium battery side edge glue sealing, and discloses a soft package lithium cell side edge glue sealing device which comprises a main frame, side blocks are symmetrically installed on the two sides of the main frame, a glue sealing structure is installed between the two side blocks, and a first conveying belt, a second conveying belt and an air drying structure are sequentially arranged below the main frame at intervals. An air drying structure is arranged below the main frame and located on the side, away from the first conveying belt, of the second conveying belt, a jacking structure is further arranged at the end, close to the first conveying belt, of the lower portion of the main frame, and the jacking structure is located between the first conveying belt and the second conveying belt and used for jacking the battery bodies on the first conveying belt to the glue sealing structure for glue sealing operation. Through cooperation of the glue sealing structure and the jacking structure, automation and high precision of glue sealing of the side edge of the soft package lithium cell are achieved. During glue sealing, the third electric cylinder pushes the top plate to accurately jack the battery main body to a glue sealing position, and the first electric cylinder drives the glue sealing part to move downwards, so that the outer frame is aligned with the gap of the battery main body.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery side sealing, in particular to a side sealing device for a soft-pack lithium battery cell. Background Art

[0002] With the continuous miniaturization and advancement of high-performance electronic devices, soft-pack lithium batteries, as a new generation of high-performance, green and environmentally friendly batteries, are widely used in a variety of fields, including new energy vehicles, smartphones, tablets, and energy storage systems, thanks to their advantages such as light weight, small size, flexible design, and high safety. After filling the soft-pack lithium battery, ensuring the quality of the sealing glue on the side of the cell plays a vital role in preventing electrolyte leakage, extending battery life, and ensuring battery performance and safety.

[0003] The traditional sealing process for soft-pack lithium-ion batteries relies primarily on manual glue pouring, a method with numerous drawbacks. For one thing, manual glue pouring makes it difficult to precisely control the amount of glue, which can easily lead to either excessive or insufficient glue. Insufficient glue cannot effectively isolate the electrolyte from the external environment, exposing the battery to the risk of electrolyte leakage, impacting battery performance and lifespan. Excessive glue wastes materials and can contaminate the battery surface, impacting subsequent assembly. Furthermore, manual glue pouring is inefficient, making it difficult to meet the efficient and stable production demands of modern, large-scale production lines. It can easily become a bottleneck in the entire lithium battery manufacturing process, increasing production costs.

[0004] Therefore, those skilled in the art have proposed a side sealing device for a soft-pack lithium battery cell to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a side sealing device for a soft-pack lithium battery cell to solve the problem.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a side sealing device for a soft-pack lithium battery cell, comprising a main frame, side blocks symmetrically installed on both sides of the main frame, a sealing structure installed between the two side blocks, a first conveyor belt, a second conveyor belt and an air-drying structure sequentially arranged below the main frame, and the air-drying structure is located on the side of the second conveyor belt away from the first conveyor belt, a jacking structure is also provided below the main frame near one end of the first conveyor belt, the jacking structure is located between the first conveyor belt and the second conveyor belt, and is used to lift the battery body on the first conveyor belt to the sealing structure for sealing operation, and then fall onto the second conveyor belt, and be transported to the air-drying structure via the second conveyor belt for air-drying treatment.

[0007] Through the above technical solution, a series of automated operations of the battery body from transportation, lifting, sealing to air drying are realized, which improves the efficiency and quality of sealing, reduces labor costs, and ensures the safety and stability of the battery.

[0008] Preferably, the sealing structure includes an inverted U-frame fixedly connected to the top of the side block, and side grooves are provided on both sides of the outer surface of the inverted U-frame, and a first electric cylinder is installed on the top of the inverted U-frame, and the output end of the first electric cylinder passes through the top of the inverted U-frame and is fixedly connected to the connecting frame, and the bottom of the connecting frame is fixedly connected to two side sliders, and an outer frame is fixedly connected between the two side sliders, and the outside of the outer frame is fixedly connected to a protruding rod, and the inside of the protruding rod is installed with a second electric cylinder, and the output end of the second electric cylinder is fixedly connected to a push plate, and a servo motor is fixedly installed on the inner top of the connecting frame, and the output end of the servo motor is installed with an inner frame, and a first set rod is installed on the outer surface of the output shaft of the servo motor, and sliding grooves are provided on both sides of the first set rod, and the inside of the first set rod is slidably connected to the second set rod, and blocks are installed on both sides of the outer surface of the second set rod, and the bottom of the second set rod is fixedly connected to a spring.

[0009] The above-mentioned technical solution, through the coordinated work of its various components, realizes the automated sealing function of the battery body side. Specifically, the inverted U-frame provides a stable support foundation for the sealing structure, the side grooves and side sliders cooperate to achieve stable lifting and lowering of the outer frame, and the first electric cylinder controls the vertical movement of the connecting frame and the sealing components to accurately align the gaps in the battery body. The servo motor drives the rotation of the inner frame and the first set of rods. Combined with the elastic properties of the spring and the second set of rods, this ensures that the glue can be evenly and accurately injected into the gaps on the side of the battery body, completing the high-precision sealing operation. At the same time, the second electric cylinder and push plate limit and push the battery body during the sealing process, ensuring the stability and accuracy of the sealing process.

[0010] Preferably, the lifting structure includes a fixed platform, which is fixedly connected to the inner side of the main frame, a third electric cylinder is installed on the top of the fixed platform, the output end of the third electric cylinder is fixedly connected to a top plate, and a battery body is placed on the top of the top plate.

[0011] Through the above technical solution, during the sealing process, the lifting structure is responsible for accurately lifting the battery body from the first conveyor belt to the sealing structure. After completing the sealing operation, the battery body is smoothly dropped to the second conveyor belt, ensuring the automation and efficiency of the entire sealing process.

[0012] Preferably, the air-drying structure includes a cover frame, which is fixedly connected to the top side of the main frame. A plurality of mounting plates are fixedly connected to the upper surface of the cover frame. A plurality of fans are installed on the outer side of the mounting plates, and the air outlets of the fans face the conveying direction of the second conveyor belt.

[0013] With this technical solution, after the glue sealing operation is completed, the air-drying structure uses a cover frame and multiple fans to air-dry the battery body. The fan outlets are oriented in the direction of the second conveyor belt, generating airflow to blow over the battery body, accelerating the glue solidification process, thereby improving production efficiency and ensuring the quality of the glue sealing of the battery body.

[0014] Preferably, the side slider is slidably arranged in the side groove, the two clamping blocks are respectively slidably connected to the inside of the slide groove at corresponding positions, and the length direction of the side groove is perpendicular to the conveying direction of the first conveyor belt.

[0015] Through the above technical solution, the side slider slides in the side groove, driving the sealing component to move stably and accurately position along the conveying direction perpendicular to the first conveyor belt. At the same time, the card block slides in the slide groove, ensuring that the second set of rods can be flexibly extended and retracted and tightly fit the gap of the battery body, thereby jointly ensuring the accuracy and stability of the sealing operation.

[0016] Preferably, baffles are installed on both sides of the interior of the main frame, and the baffles are located between the first conveyor belt and the second conveyor belt.

[0017] Through the above technical solution, the baffle is located between the first conveyor belt and the second conveyor belt, which is used to limit the battery body during transportation, prevent the battery body from shifting, and ensure that it can accurately reach the sealing position, thereby ensuring the smooth progress of the sealing operation.

[0018] Preferably, a storage box is installed on the top of the first set of rods, one end of the storage box is connected to a glue outlet pipe, and the glue outlet pipe is fixedly connected to the second set of rods.

[0019] Through the above technical solution, a storage box is installed on the top of the first set of rods to store sealing glue. The glue outlet pipe connected to one end is fixedly connected to the second set of rods to form a glue delivery channel, ensuring that the glue can be stably transported from the storage box to the second set of rods, and then injected into the side gaps of the battery body to achieve precise sealing.

[0020] Preferably, the push plate is in contact with the side of the battery body, and the push plate is used to limit and push the battery body during the sealing process.

[0021] Through the above technical solution, the push plate fits against the side of the battery body, limiting the battery body during sealing to prevent it from moving and ensure accurate sealing position.

[0022] Preferably, sealing glue is stored in the storage box, and a liquid level sensor is provided on the storage box for monitoring the liquid level of the glue.

[0023] Through the above technical solution, the storage box is used to store sealing glue to ensure sufficient glue supply during the sealing process; and the liquid level sensor monitors the glue level in real time. Once the glue is lower than the set value, it will promptly send a signal to remind you to replenish glue, thereby ensuring the continuity and stability of the sealing work.

[0024] Preferably, the glue outlet pipe is a flexible hose, and an adjustable valve is provided at the glue outlet of the glue outlet pipe.

[0025] Through the above technical solution, the glue outlet hose is made of flexible hose material, which has good flexibility and adaptability and can meet the needs of complex pipeline connection. At the same time, its glue outlet is equipped with an adjustable valve for accurately controlling the flow and flow rate of the glue, thereby ensuring the accuracy and consistency of the sealing operation.

[0026] The present invention provides a side sealing device for a soft-pack lithium battery cell. It has the following beneficial effects:

[0027] 1. The present invention achieves automated and high-precision side sealing of soft-pack lithium battery cells through the coordinated cooperation of the sealing structure and the lifting structure. During sealing, the third electric cylinder pushes the top plate to precisely lift the battery body to the sealing position, while the first electric cylinder drives the sealing component downward to align the gap between the outer frame and the battery body. The servo motor drives the rotation of the first set of rods. With the help of the spring and the telescopic function of the second set of rods, the glue is evenly injected into the side gap of the battery body, effectively preventing electrolyte leakage and improving battery safety and stability. The sealing effect is uniform and consistent, significantly superior to the traditional method of manual glue filling.

[0028] 2. The air-drying structure design of this invention significantly improves the efficiency of glue solidification after sealing. The sealed battery body is transported to the air-drying area via a second conveyor belt. Multiple fans blow air at different angles to the battery body, accelerating the volatilization and curing reaction of the glue solvent, allowing the glue to solidify quickly, shortening the sealing process time, speeding up the production line, and thus improving overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A perspective view of the present invention;

[0030] Figure 2 This is a schematic structural diagram of the second conveyor belt of the present invention;

[0031] Figure 3 Schematic diagram of the top plate structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the inverted U-frame structure of the present invention;

[0033] Figure 5 It is a schematic diagram of the protruding rod structure of the present invention;

[0034] Figure 6 It is a schematic structural diagram of the storage box of the present invention.

[0035] Among them, 1. Main frame; 2. Side block; 3. Sealing structure; 31. Inverted U frame; 32. Side groove; 33. First electric cylinder; 34. Connecting frame; 35. Side slider; 36. Outer frame; 37. Protruding rod; 38. Second electric cylinder; 39. Push plate; 310. Servo motor; 311. Inner frame; 312. First set of rods; 313. Slide groove; 314. Second set of rods; 315. Spring; 316. Block; 317. Glue outlet hose; 318. Storage box; 4. Lifting structure; 41. Fixed platform; 42. Third electric cylinder; 43. Top plate; 44. Battery body; 5. First conveyor belt; 6. Second conveyor belt; 7. Air-drying structure; 71. Cover frame; 72. Mounting plate; 73. Fan; 8. Baffle. DETAILED DESCRIPTION

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

[0037] Please see the attached Figure 1 -Attached Figure 6 An embodiment of the present invention provides a side sealing device for a soft-pack lithium battery cell, comprising a main frame 1, side blocks 2 symmetrically installed on both sides of the main frame 1, a sealing structure 3 installed between the two side blocks 2, a first conveyor belt 5, a second conveyor belt 6 and an air-drying structure 7 sequentially arranged below the main frame 1, and the air-drying structure 7 is located on the side of the second conveyor belt 6 away from the first conveyor belt 5, a lifting structure 4 is further provided below the main frame 1 near one end of the first conveyor belt 5, the lifting structure 4 is located between the first conveyor belt 5 and the second conveyor belt 6, and is used to lift the battery body 44 on the first conveyor belt 5 to the sealing structure 3 for sealing operation, and then drop it onto the second conveyor belt 6, and transport it to the air-drying structure 7 via the second conveyor belt 6 for air-drying treatment.

[0038] Specifically, the main frame 1 serves as the main supporting structure of the entire device, and plays the role of bearing and connecting other components to ensure the overall stability of the device. The side block 2 is used to install and fix the sealing structure 3, providing a stable installation base for the sealing structure 3 and ensuring the accuracy of the sealing process. The first conveyor belt 5 and the second conveyor belt 6 are arranged in sequence below the main frame 1, and are used to transport the battery body 44 to different working positions. The first conveyor belt 5 is mainly responsible for transporting the battery body 44 to the jacking structure 4, and the second conveyor belt 6 is used to transport the battery body 44 to the air-drying structure 7 for air-drying after the sealing is completed. The air-drying structure 7 is located on the side of the second conveyor belt 6 away from the first conveyor belt 5. Its function is to air-dry the battery body 44 after sealing, accelerate the solidification of the glue, and improve production efficiency. The lifting structure 4 is used to lift the battery body 44 on the first conveyor belt 5 to the sealing structure 3 for sealing operations.

[0039] Through the orderly coordination of the upper components, a series of processes such as conveying, lifting, sealing and air drying of the battery body 44 are automated, thereby improving the sealing efficiency and quality and reducing labor costs.

[0040] The sealing structure 3 includes an inverted U-frame 31 fixedly connected to the top of the side block 2. Side grooves 32 are provided on both sides of the outer surface of the inverted U-frame 31. A first electric cylinder 33 is installed on the top of the inverted U-frame 31. The output end of the first electric cylinder 33 passes through the top of the inverted U-frame 31 and is fixedly connected to a connecting frame 34. The bottom of the connecting frame 34 is fixedly connected to two side sliders 35. An outer frame 36 is fixedly connected between the two side sliders 35. A protruding rod 37 is fixedly connected to the outside of the outer frame 36. A second electric cylinder 38 is installed on the inside of the protruding rod 37. The output end of the electric cylinder 38 is fixedly connected to a push plate 39. A servo motor 310 is fixedly mounted on the inner top of the connecting frame 34. An inner frame 311 is mounted on the output end of the servo motor 310. A first rod 312 is mounted on the outer surface of the output shaft of the servo motor 310. Slide slots 313 are defined on both sides of the first rod 312. A second rod 314 is slidably connected to the interior of the first rod 312. Blocks 316 are mounted on both sides of the outer surface of the second rod 314. A spring 315 is fixedly connected to the bottom of the second rod 314. Baffles 8 are mounted on both sides of the interior of the main frame 1, located between the first conveyor belt 5 and the second conveyor belt 6. A storage box 318 is mounted on the top of the first rod 312. One end of the storage box 318 is connected to a glue outlet hose 317, which is fixedly connected to the second rod 314. The push plate 39 fits against the side of the battery body 44 and is used to limit and push the battery body 44 during the glue sealing process.

[0041] Specifically, the side grooves 32 provide sliding tracks for the side sliders 35, enabling them to slide stably up and down along the side grooves 32, thereby driving the vertical movement of the connected components. The first electric cylinder 33, through its telescopic action, drives the connecting frame 34 and the components below it to move stably up and down, achieving the raising and lowering of the glue sealing components. The outer frame 36 cooperates with the gap in the battery body 44 to provide guidance and sealing for glue injection, ensuring that the glue is accurately injected into the side gap of the battery body 44.

[0042] The protruding rod 37 is used to mount the second electric cylinder 38, providing stable support and fixation for the second electric cylinder 38. The second electric cylinder 38 drives the push plate 39 to move horizontally through its telescopic action, which is used to limit and push the battery body 44 during the sealing process, ensuring the stable position of the battery body 44 during the sealing process.

[0043] The push plate 39 fits against the side of the battery body 44, limiting the position of the battery body 44 during the sealing process to prevent it from moving. After the sealing is completed, the push plate 39 pushes the battery body 44 from the lifting structure 4 to the second conveyor belt 6. The inner frame 311 cooperates with the outer frame 36 to form a channel and sealed space for glue injection, ensuring that the glue can be accurately injected into the side gaps of the battery body 44.

[0044] The first rod 312 is driven by the servo motor 310 to rotate, and the second rod 314 is telescopically moved by the spring 315, so that the end of the second rod 314 can closely fit the gap contour of the battery body 44, ensuring that the glue is evenly injected into the gap.

[0045] The second set of rods 314 cooperates with the slide groove 313 to achieve telescopic sliding, and can flexibly extend and retract within the first set of rods 312. Its end closely fits the gap contour of the battery body 44, and the glue in the storage box 318 is stably injected into the side gap of the battery body 44 through the glue outlet tube 317.

[0046] The storage box 318 is used to store the sealing glue, providing a source of glue for the sealing process. The glue is stably delivered to the second set of rods 314 through the glue outlet pipe 317, and then injected into the side gaps of the battery body 44. The glue outlet pipe 317 serves as a channel for the glue to be transported, stably delivering the glue in the storage box 318 to the second set of rods 314, ensuring that the glue flows smoothly into the side gaps of the battery body 44.

[0047] The lifting structure 4 includes a fixed platform 41, which is fixedly connected to the inner side of the main frame 1. A third electric cylinder 42 is installed on the top of the fixed platform 41. The output end of the third electric cylinder 42 is fixedly connected to a top plate 43. A battery body 44 is placed on the top of the top plate 43.

[0048] Specifically, when the battery body 44 is transported to the jacking structure 4 via the first conveyor belt 5, the third electric cylinder 42 receives a start signal from the control system. The output end of the third electric cylinder 42 begins to extend vertically upward, driving the top plate 43 fixedly connected to it to rise steadily. The battery body 44 is pre-placed on the top of the top plate 43. As the top plate 43 rises, the battery body 44 is precisely lifted to the predetermined sealing position at the sealing structure 3 with minimal error, ensuring the accuracy of subsequent sealing operations. After the sealing process is completed, the output end of the third electric cylinder 42 drives the top plate 43 to descend steadily, allowing the battery body 44 to detach from the sealing structure 3 and accurately fall onto the second conveyor belt 6.

[0049] The air-drying structure 7 includes a cover frame 71, which is fixedly connected to the top side of the main frame 1. A plurality of mounting plates 72 are fixedly connected to the upper surface of the cover frame 71. A plurality of fans 73 are installed on the outer side of the mounting plates 72, and the air outlets of the fans 73 face the conveying direction of the second conveyor belt 6.

[0050] Specifically, when the second conveyor belt 6 transports the glue-sealed battery body 44 to the air-drying structure 7, the fans 73 mounted on the outside of the mounting plates 72 receive a start signal and begin operating. The air outlets of these fans 73 are all oriented in the direction of the second conveyor belt 6, and a strong airflow is ejected from the outlets, precisely blowing onto the glue-sealed side edges of the battery body 44. The impact of the airflow effectively accelerates the volatilization of the glue solvent, prompting the glue to cure quickly, thereby significantly shortening the glue drying time.

[0051] During this process, the cover frame 71 plays a key role in rectification and guidance. It gathers and guides the airflow generated by the multiple fans 73, ensuring that the airflow can act evenly and concentratedly on the battery body 44, avoiding disordered dispersion of the airflow and improving the drying efficiency.

[0052] The side slider 35 is slidably disposed in the side groove 32 , and the two clamping blocks 316 are slidably connected to the inside of the slide groove 313 at the corresponding position. The length direction of the side groove 32 is perpendicular to the conveying direction of the first conveyor belt 5 .

[0053] Specifically, the side slider 35 and the clamping block 316 slide in the side groove 32 and the slide groove 313, respectively, ensuring the precise movement and alignment of the sealing components perpendicular to the conveying direction of the first conveyor belt 5. The clamping block 316 slides in the slide groove 313, ensuring that the second set of rods 314 can flexibly extend and contract, closely fitting the gap contour of the battery body 44. This design ensures that the glue can be accurately and evenly injected into the side gap of the battery body 44, thereby achieving a high-quality sealing effect.

[0054] The storage box 318 stores sealing glue, and a liquid level sensor is provided on the storage box 318 to monitor the liquid level of the glue. The glue outlet pipe 317 is a flexible hose, and an adjustable valve is provided at the glue outlet of the glue outlet pipe 317.

[0055] Specifically, by adjusting the opening of the valve, the flow rate and flow velocity of the glue can be precisely controlled to meet the requirements of different sealing processes.

[0056] Working principle: When using this device, it includes the following detailed operating steps:

[0057] Initial conveying stage: The operator places the battery body 44 to be sealed on the first conveyor belt 5. The first conveyor belt 5 starts to steadily convey the battery body 44 into the device. When the battery body 44 reaches the predetermined position of the top plate 43, the baffle 8 limits the battery body 44.

[0058] Lifting and alignment phase: The third electric cylinder 42 is activated upon receiving the control signal, and its telescopic rod steadily pushes the top plate 43 upward. The top plate 43 and the battery body 44 rise together until the side of the battery body 44 is precisely aligned with the bottom of the inner frame 311 in the sealing structure 3;

[0059] Sealing operation stage: The first electric cylinder 33 is started, and its telescopic rod drives the connecting frame 34 and the parts connected thereto to move downward steadily. The gap between the outer frame 36 and the battery body 44 is gradually aligned to ensure that the glue can be accurately injected into the side gap of the battery body 44. At the same time, the servo motor 310 starts to rotate, and its output shaft drives the first set of rods 312 to rotate. Under the elastic action of the spring 315, the second set of rods 314 can be flexibly extended and retracted within the first set of rods 312, so that the end of the second set of rods 314 fits tightly against the gap contour of the battery body 44. The external pump is started, and the sealing glue in the storage box 318 is stably injected into the second set of rods 314 through the glue outlet pipe 317, and finally flows into the side gap of the battery body 44 to complete the sealing work. During this process, the flow rate and injection speed of the glue can be precisely controlled according to actual needs to ensure the uniformity and consistency of each sealing;

[0060] Air-drying and conveying stage: After the sealing is completed, the second electric cylinder 38 receives a signal to start, and its telescopic rod pushes the push plate 39 to move forward. The push plate 39 stably pushes the battery body 44 from the top plate 43 and accurately places it on the second conveyor belt 6. The second conveyor belt 6 starts to transport the battery body 44 that has completed the sealing to the working area of the air-drying structure 7. The multiple fans 73 in the cover frame 71 of the air-drying structure 7 start to run, and their air outlets are aligned with the battery body 44 on the second conveyor belt 6. The strong airflow can accelerate the solidification speed of the glue on the side of the battery body 44, effectively improve production efficiency, and ensure the quality and performance of the battery body 44 in subsequent processes.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A side sealing device for a soft-pack lithium battery cell, comprising a main frame (1), characterized in that: Side blocks (2) are symmetrically installed on both sides of the main frame (1), and a sealing structure (3) is installed between the two side blocks (2). A first conveyor belt (5), a second conveyor belt (6) and an air-drying structure (7) are sequentially arranged below the main frame (1), and the air-drying structure (7) is located on the side of the second conveyor belt (6) away from the first conveyor belt (5). A lifting structure (4) is also provided below the main frame (1) near one end of the first conveyor belt (5). The lifting structure (4) is located between the first conveyor belt (5) and the second conveyor belt (6) and is used to lift the battery body (44) on the first conveyor belt (5) to the sealing structure (3) for sealing, and then drop it onto the second conveyor belt (6) and transport it to the air-drying structure (7) via the second conveyor belt (6) for air-drying.

2. The side sealing device for a soft-pack lithium battery according to claim 1, characterized in that: The sealing structure (3) comprises an inverted U-frame (31) fixedly connected to the top of the side block (2), side grooves (32) are provided on both sides of the outer surface of the inverted U-frame (31), a first electric cylinder (33) is installed on the top of the inverted U-frame (31), an output end of the first electric cylinder (33) passes through the top of the inverted U-frame (31) and is fixedly connected to a connecting frame (34), two side sliders (35) are fixedly connected to the bottom of the connecting frame (34), an outer frame (36) is fixedly connected between the two side sliders (35), a protruding rod (37) is fixedly connected to the outside of the outer frame (36), and a second electric cylinder (38) is installed on the inner side of the protruding rod (37). The output end of the second electric cylinder (38) is fixedly connected to a push plate (39), a servo motor (310) is fixedly installed on the inner top of the connecting frame (34), an inner frame (311) is installed on the output end of the servo motor (310), a first sleeve rod (312) is installed on the outer surface of the output shaft of the servo motor (310), a sliding groove (313) is provided on both sides of the first sleeve rod (312), a second sleeve rod (314) is slidably connected inside the first sleeve rod (312), a clamping block (316) is installed on both sides of the outer surface of the second sleeve rod (314), and a spring (315) is fixedly connected to the bottom of the second sleeve rod (314).

3. The side sealing device for a soft-pack lithium battery according to claim 1, characterized in that: The lifting structure (4) includes a fixed platform (41), the fixed platform (41) is fixedly connected to the inner side of the main frame (1), a third electric cylinder (42) is installed on the top of the fixed platform (41), an output end of the third electric cylinder (42) is fixedly connected to a top plate (43), and a battery body (44) is placed on the top of the top plate (43).

4. The side sealing device for a soft-pack lithium battery according to claim 1, characterized in that: The air-drying structure (7) comprises a cover frame (71), the cover frame (71) is fixedly connected to one side of the top of the main frame (1), a plurality of mounting plates (72) are fixedly connected to the upper surface of the cover frame (71), a plurality of fans (73) are installed on the outer side of the mounting plates (72), and the air outlets of the fans (73) face the conveying direction of the second conveyor belt (6).

5. The side sealing device for a soft-pack lithium battery according to claim 2, characterized in that: The side slider (35) is slidably arranged in the side groove (32), and the two clamping blocks (316) are respectively slidably connected to the inside of the corresponding position slide groove (313), and the length direction of the side groove (32) is perpendicular to the conveying direction of the first conveyor belt (5).

6. The side sealing device for a soft-pack lithium battery according to claim 1, characterized in that: Baffles (8) are installed on both sides of the interior of the main frame (1), and the baffles (8) are located between the first conveyor belt (5) and the second conveyor belt (6).

7. The side sealing device for a soft-pack lithium battery according to claim 2, characterized in that: A storage box (318) is installed on the top of the first rod set (312), and one end of the storage box (318) is connected to a glue outlet pipe (317), and the glue outlet pipe (317) is fixedly connected to the second rod set (314).

8. The side sealing device for a soft-pack lithium battery according to claim 2, characterized in that: The push plate (39) is fitted with the side of the battery body (44), and the push plate (39) is used to limit and push the battery body (44) during the sealing process.

9. The side sealing device for a soft-pack lithium battery according to claim 7, characterized in that: Sealing glue is stored in the storage box (318), and a liquid level sensor is provided on the storage box (318) for monitoring the liquid level of the glue.

10. The side sealing device of a soft-pack lithium battery according to claim 7, characterized in that: The glue outlet pipe (317) is a flexible hose, and an adjustable valve is provided at the glue outlet of the glue outlet pipe (317).

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