Packaging equipment for automobile lithium battery production

Abstract

The invention relates to the technical field of automobile lithium batteries, in particular to packaging equipment for automobile lithium battery production. Comprising a packaging table, the packaging table is provided with a clamping table used for clamping a lithium battery, the packaging table is fixedly connected with a power module, the packaging table is slidably connected with a sliding plate, the power module is used for driving the sliding plate to move up and down along the packaging table, the sliding plate is fixedly connected with a mold, a rotating ring is rotatably connected into the mold, and the rotating ring is fixedly connected with the packaging table. The rotating ring is connected with an adjusting frame distributed in the circumferential direction in a sliding mode, and the adjusting frame is provided with balls used for rolling and sealing. The sealing position is rolled through the balls after mechanical stamping of the lithium battery is completed, uniform pressure is applied to the shell at the sealing position through the rolling effect of the balls, the shell at the sealing position of the top of the lithium battery is further compacted, it is ensured that the shell at the sealing position of the lithium battery is tightly attached to the top of the lithium battery, and the firmness and sealing performance of the sealing are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive lithium batteries, and particularly to a packaging device for the production of automotive lithium batteries. Background Art

[0002] A lithium battery is a rechargeable secondary battery with lithium ions as the working medium. With its advantages such as high energy density, long cycle life, low self-discharge rate, and no memory effect, it has been widely used in many fields such as portable electronic devices, electric vehicles, energy storage systems, and aerospace. According to different external shapes, lithium batteries are mainly divided into three types: cylindrical, square, and soft-pack. Among them, cylindrical lithium batteries have become one of the most widely used battery forms in industrial applications due to their stable structure, high mechanical strength, excellent heat dissipation performance, and mature production process. They are particularly widely used in power battery packs for new energy vehicles and high-rate discharge devices.

[0003] The packaging process of cylindrical lithium batteries mainly includes key steps such as shell preparation, tab welding, liquid injection, sealing, and detection. Among them, the sealing process is the core link of the entire packaging process, directly affecting the battery's sealing performance, safety, and service life. Currently, cylindrical lithium batteries generally use mechanical stamping for sealing, that is, applying extrusion pressure to the top of the battery shell through a mold to make the shell material bend inward to form a closed seal. However, after long-term use, local wear will occur on the contact surface between the stamping mold and the lithium battery, resulting in an uneven contact surface between the mold and the lithium battery during stamping. This causes uneven stress when the stamping mold seals the lithium battery, easily resulting in overpressure or underpressure in local areas, thereby affecting the sealing quality, reducing the sealing performance, and even causing safety hazards such as electrolyte leakage or gas escape, thus restricting the improvement of the overall performance of the battery. Summary of the Invention

[0004] In order to overcome the drawbacks mentioned in the above background art, the present invention provides a packaging device for the production of automotive lithium batteries.

[0005] The technical solution of the present invention is: A packaging device for the production of automotive lithium batteries, including a packaging table, the packaging table is provided with a clamping table for clamping the lithium battery, the packaging table is fixedly connected with a power module, the packaging table is slidably connected with a sliding plate, the power module is used to drive the sliding plate to move up and down along the packaging table, the sliding plate is fixedly connected with a mold, a rotating ring is rotatably connected in the mold, the rotating ring is slidably connected with circumferentially distributed adjusting frames, the adjusting frames are provided with balls for rolling sealing, the sliding plate is provided with a driving component for driving the rotating ring to rotate, and the mold is provided with a protruding component for synchronously changing the positions of all the adjusting frames.

[0006] In addition, it is particularly preferred that the driving assembly includes a servo motor, the servo motor is fixedly connected to the sliding plate, the output shaft of the servo motor is fixedly connected with a first gear, the sliding plate is rotatably connected with a second gear meshing with the first gear, the second gear is fixedly connected with a rotating frame, the rotating frame is fixedly connected with the rotating ring, and a stabilizing assembly for keeping the lithium battery pole column stable is arranged on the rotating frame.

[0007] In addition, it is particularly preferred that the stabilizing assembly includes a sliding shaft, the sliding shaft is slidably connected to the rotating frame, the sliding shaft passes through the rotating ring, the sliding shaft is fixedly connected with a centering block, a first elastic member is arranged between the sliding shaft and the rotating frame, and the central axis of the sliding shaft, the central axis of the centering block, the central axis of the rotating ring and the central axis of the mold coincide.

[0008] In addition, it is particularly preferred that an inclined surface is arranged on one side of the centering block away from the sliding shaft for centering the pole column of the lithium battery.

[0009] In addition, it is particularly preferred that the protruding assembly includes a rotating ring, the rotating ring is rotatably connected in the mold, the rotating ring is slidably connected with a sliding frame, the sliding frame is fixedly connected with a pushing frame having the same number as the adjusting frame, and the pushing frame is slidably connected with the corresponding adjusting frame.

[0010] In addition, it is particularly preferred that a second elastic member is arranged between the pushing frame and the corresponding adjusting frame for stabilizing the position of the adjusting frame.

[0011] In addition, it is particularly preferred that the rotating ring is provided with guiding grooves having the same number as the adjusting frame, the adjusting frame slides in the corresponding guiding groove, the adjusting frame is fixedly connected with two symmetrically distributed first clamping blocks, and two symmetrically distributed first sliding grooves are arranged in the guiding groove of the rotating ring, and the first clamping block slides in the adjacent first sliding groove.

[0012] In addition, it is particularly preferred that the first sliding groove is an L-shaped groove for controlling the contact time between the ball and the lithium battery.

[0013] In addition, it is particularly preferred that an adjusting shaft is slidably connected to the mold, the adjusting shaft is in limit sliding connection with the sliding frame, the adjusting shaft is fixedly connected with a second clamping block, and a second sliding groove is arranged on the rotating frame, and the second clamping block slides in the second sliding groove.

[0014] In addition, it is particularly preferred that the second sliding groove is formed by alternately arranging a plurality of arc-shaped grooves and a plurality of inclined sliding grooves, and both sides of the second sliding groove are inclined sliding grooves.

[0015] The present invention has the following advantages: 1. After the mechanical stamping of the lithium battery is completed, the present invention uses a ball to roll-press the sealing position. The rolling action of the ball applies uniform pressure to the outer shell at the sealing position, further compressing the outer shell at the top sealing position of the lithium battery, ensuring that the outer shell at the sealing position of the lithium battery closely fits the top of the lithium battery, and improving the firmness and tightness of the seal.

[0016] 2. By making the centering block contact the pole column inside the lithium battery in advance, mutual extrusion is generated between the two, realizing the deviation correction and stabilization of the pole column inside the battery, making the pole column of the lithium battery and the battery outer shell in a concentric state, reducing the probability of the pole column of the lithium battery being skewed, and improving the self-quality of the lithium battery after encapsulation.

[0017] 3. By making the ball fit the outer side of the top of the lithium battery and gradually move from the outside to the inside, the rolling radius of the ball on the lithium battery is continuously changed from the outside to the inside, uniformly compressing the outer shell at the top sealing position of the lithium battery, and further improving the firmness and tightness of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural sectional view of the skateboard of the present invention; Figure 3 is a three-dimensional structural sectional view of the mold of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the rotating ring and the sliding frame of the present invention; Figure 5 is a three-dimensional structural schematic diagram of the second elastic member of the present invention; Figure 6 is a three-dimensional structural schematic diagram of the first clamping block and the first sliding groove of the present invention; Figure 7 is a three-dimensional structural schematic diagram of the adjusting shaft and the second clamping block of the present invention; Figure 8 is a three-dimensional structural schematic diagram of the second sliding groove of the present invention.

[0019] In the attached drawing reference numerals: 1 - encapsulation table, 2 - clamping table, 3 - power module, 4 - skateboard, 5 - mold, 6 - rotating ring, 7 - adjusting frame, 8 - ball, 201 - servo motor, 202 - first gear, 203 - second gear, 204 - rotating frame, 301 - sliding shaft, 302 - centering block, 303 - first elastic member, 401 - rotating ring, 402 - sliding frame, 403 - pushing frame, 404 - second elastic member, 405 - first clamping block, 406 - first sliding groove, 501 - adjusting shaft, 502 - second clamping block, 503 - second sliding groove. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Currently, cylindrical lithium batteries generally use mechanical stamping to seal, that is, pressure is applied to the top of the battery case through a mold, causing the case material to bend inward to achieve sealing. However, during long-term use, local wear is likely to occur at the contact part between the stamping mold and the battery, resulting in an uneven contact surface. This causes uneven stress when the mold applies pressure to seal the battery, and local overpressure or insufficient pressure is likely to occur, thereby affecting the uniformity of sealing and the sealing quality. The decline in sealing performance may lead to safety hazards such as electrolyte leakage or internal gas leakage, seriously affecting the use safety and reliability of the battery and restricting the further improvement of its overall performance.

[0022] Embodiment 1

[0023] This embodiment discloses a packaging device for the production of automotive lithium batteries, which is used to improve its own sealing strength.

[0024] As Figures 1 - 5 shown, it includes a packaging table 1. The packaging table 1 is provided with a clamping table 2 for clamping the lithium battery. The clamping table 2 is an existing electric three-jaw chuck, and the clamping parts can be pieced together into a cylinder to wrap the cylindrical lithium battery inside. The packaging table 1 is fixedly connected with a power module 3. In this embodiment, the power module 3 is a hydraulic push rod. The telescopic end of the hydraulic push rod is fixedly connected to the lower side of the sliding plate 4. The packaging table 1 is slidably connected with the sliding plate 4. The power module 3 is used to drive the sliding plate 4 to move up and down along the packaging table 1. The sliding plate 4 is fixedly connected with a mold 5. A cylindrical through hole is provided in the middle of the mold 5, and an annular arc surface for guiding the bending of the top shell of the lithium battery is provided. A rotating ring 6 is rotatably connected inside the mold 5. The mold 5 and the rotating ring 6 cooperate to form the upper mold for stamping the lithium battery, and after the clamping table 2 clamps the lithium battery, it forms the lower mold for stamping the lithium battery. The two are spliced to complete the stamping. The mold 5 is used to guide the outer shell of the top of the lithium battery to bend inward, and the rotating ring 6 is used to squeeze the bent outer shell of the lithium battery. The rotating ring 6 is slidably connected with circumferentially distributed adjusting frames 7. In this embodiment, the sliding direction of the adjusting frames 7 and the rotating ring 6 is only up and down sliding. The number of adjusting frames 7 can be freely set. In this embodiment, the number is four, and they are circumferentially and equally spaced on the rotating ring 6. The bottom of the adjusting frame 7 is provided with balls 8 for rolling and sealing. The balls 8 are combined with the top of the stamped lithium battery and roll press it to improve the sealing strength of the lithium battery seal. In the initial state, the bottom of the balls 8 is higher than the lower side of the rotating ring 6, so that the outer shell of the lithium battery is preferentially stamped and sealed under the cooperation of the mold 5 and the rotating ring 6. A driving component for driving the rotating ring 6 to rotate is provided on the sliding plate 4, and a protruding component for synchronously changing the positions of all the adjusting frames 7 is provided inside the mold 5.

[0025] As Figures 1 - 4 shown, the driving assembly includes a servo motor 201. The servo motor 201 is fixedly connected to the upper side of the slide plate 4. The output shaft of the servo motor 201 is fixedly connected with a first gear 202. A second gear 203 meshing with the first gear 202 is rotatably connected to the upper side of the slide plate 4. A rotating frame 204 rotating coaxially is fixedly connected inside the second gear 203. The rotating frame 204 is fixedly connected with the rotating ring 6, and the two rotate coaxially. A stabilizing assembly for stabilizing the lithium battery pole column is arranged on the rotating frame 204.

[0026] As Figure 3 shown, the stabilizing assembly includes a sliding shaft 301. The sliding shaft 301 is slidably connected inside the rotating frame 204. The sliding shaft 301 passes through the rotating ring 6. A centering block 302 is fixedly connected to the bottom of the sliding shaft 301. The radius of the centering block 302 is smaller than the inner diameter of the rotating ring 6, so that the centering block 302 can pass through the rotating ring 6. In the initial state, the upper side of the centering block 302 is lower than the lower side of the rotating ring 6, so as to contact the pole column of the lithium battery prior to the bending of the lithium battery housing. A first elastic member 303 is arranged between the sliding shaft 301 and the rotating frame 204. The first elastic member 303 is a tension spring, which is used to drive the sliding shaft 301 to reset and generate a force on the lithium battery pole column through the sliding shaft 301 and the centering block 302, so as to improve the stability of the lithium battery pole column. The central axis of the sliding shaft 301, the central axis of the centering block 302, the central axis of the rotating ring 6 and the central axis of the mold 5 coincide. An inclined surface is arranged on the lower side of the centering block 302 for centering the pole column of the lithium battery.

[0027] Working principle: When sealing a lithium battery, first place the lithium battery to be sealed on the clamping table 2. Subsequently, start the clamping table 2 to clamp the lithium battery. After clamping is completed, turn on the power module 3. The telescopic end of the power module 3 starts to drive the slide plate 4 to move downward. The mold 5 moves downward synchronously with the slide plate 4. After the mold 5 is docked with the clamping table 2, stop the power module 3. During this period, the mold 5 applies an extrusion force to the top of the lithium battery shell. The top of the lithium battery shell bends inward along the lower side of the rotating ring 6 under the action of the pressure to form a seal. Subsequently, turn on the power module 3 to make the slide plate 4 drive the mold 5 to move upward a certain distance (a distance that allows the ball 8 to descend and contact the top of the battery), then turn off the power module 3, and through the protruding component, drive several adjusting frames 7 to drive the balls 8 on them to move downward to fit the top of the lithium battery. Then start the servo motor 201. The output shaft of the servo motor 201 drives the circumferentially distributed adjusting frames 7 to rotate synchronously through the first gear 202, the second gear 203, the rotating frame 204, and the rotating ring 6. The balls 8 on the adjusting frames 7 perform circular motion around the top of the lithium battery. The balls 8 are driven by the adjusting frames 7 to fit the sealing area at the top of the lithium battery and perform a rolling operation. The rolling action of the balls 8 applies a uniform pressure to the shell at the sealing position, further compressing the shell at the top sealing position of the lithium battery to ensure that the shell at the sealing position of the lithium battery closely fits the top of the lithium battery, improving the firmness and tightness of the seal.

[0028] After the circumferentially distributed adjusting frames 7 rotate several turns (the specific number of turns can be freely set according to the actual situation), turn off the servo motor 201, and drive several adjusting frames 7 to reset through the protruding component. At the same time, turn on the power module 3 to make the telescopic end of the power module 3 drive the slide plate 4 to reset. The mold 5 is separated from the lithium battery. Then turn on the clamping table 2 to release the clamping of the lithium battery, and take out the lithium battery with the sealing completed. At this time, the sealing of the lithium battery is completed. When it is necessary to continue sealing the lithium battery, repeat the above steps.

[0029] When the telescopic end of the power module 3 drives the mold 5 to move downward through the slide plate 4, the mold 5 drives the internal sliding shaft 301 to move synchronously. The sliding shaft 301 drives the centering block 302 at the bottom to move synchronously. The centering block 302 is initially located below the rotating ring 6. Before the lithium battery is bent inward, the centering block 302 first contacts the pole column in the lithium battery. The pole column in the lithium battery is concentric with the outer shell of the lithium battery under the extrusion of the inclined surface on the lower side of the centering block 302. At the same time, as the mold 5 gradually drives the centering block 302 to move downward, the pole column in the lithium battery generates an upward extrusion force on the centering block 302, causing the centering block 302 to drive the sliding shaft 301 to move upward synchronously, and at the same time, the first elastic member 303 is stretched. In this way, until the power module 3 stops driving the slide plate 4 to move, the battery sealing is completed. By the centering block 302 contacting the pole column in the lithium battery in advance and generating mutual extrusion to correct and stabilize it, the pole column of the lithium battery is in a concentric state with the battery outer shell, reducing the probability of the pole column of the lithium battery being skewed and improving the self-quality of the lithium battery after packaging.

[0030] After the lithium battery is packaged, when the mold 5 is reset, the centering block 302 gradually separates from the pole column of the lithium battery, and the extrusion force between the two disappears. The first elastic member 303 drives the centering block 302 to reset through the sliding shaft 301. When it is necessary to seal the lithium battery again, the above steps are repeated.

[0031] Embodiment 2

[0032] This embodiment discloses a packaging device for automotive lithium battery production, which is further improved on the basis of Embodiment 1.

[0033] As Figures 3 - 7As shown, the protruding component includes a rotating ring 401. The mold 5 is fixedly connected with a connecting frame. The rotating ring 401 is rotatably connected to the connecting frame inside the mold 5. The rotating ring 401 is slidably connected with a sliding frame 402 up and down. The bottom of the sliding frame 402 is fixedly connected with a pushing frame 403 having the same number as the adjusting frame 7. The pushing frame 403 is slidably connected with the corresponding adjusting frame 7. The pushing frame 403 deflects outward from top to bottom along the central axis of the sliding frame 402 for driving the adjusting frame 7 to slide horizontally. A second elastic member 404 is arranged between the pushing frame 403 and the corresponding adjusting frame 7. The second elastic member 404 is a spring. The second elastic member 404 is used for driving the adjusting frame 7 to reset and applying a force to the adjusting frame 7 to stabilize the position of the adjusting frame 7 so that the pushing frame 403 stably drives the adjusting frame 7 to move synchronously. The rotating ring 6 is provided with guiding grooves having the same number as the adjusting frame 7. The adjusting frame 7 slides in the guiding grooves. Here, the adjusting frame 7 can slide up and down along the rotating ring 6. At the same time, the guiding grooves of the rotating ring 6 give space for the adjacent adjusting frame 7 to slide horizontally. The adjusting frame 7 is fixedly connected with two symmetrically distributed first clamping blocks 405. Two symmetrically distributed first sliding grooves 406 are arranged in the guiding grooves of the rotating ring 6. The first clamping blocks 405 slide in the adjacent first sliding grooves 406. The first sliding grooves 406 are L-shaped grooves placed horizontally for controlling the contact time between the ball 8 and the lithium battery. The short groove of the L-shaped groove is located above. The first clamping block 405 slides down from the top of the short groove of the first sliding groove 406 to the inflection point of the long groove, that is, the adjusting frame 7 drives the ball 8 to protrude from the rotating ring 6. The ball 8 abuts against and presses the outer edge of the top of the lithium battery. When the first clamping block 405 slides from the inflection point of the short groove and the long groove to the limit of the long groove, the ball 8 moves from the outer edge of the lithium battery to the inner side, continuously changing the rolling radius of the top of the lithium battery.

[0034] As Figure 7 and Figure 8As shown in the figure, the mold 5 is slidably connected with an adjusting shaft 501. The adjusting shaft 501 is in limit sliding connection with the sliding frame 402 and is used to drive the sliding frame 402 to move synchronously. A second clamping block 502 is fixedly connected to the top of the adjusting shaft 501. A second sliding groove 503 is provided on the rotating frame 204. The second clamping block 502 slides in the second sliding groove 503. The second sliding groove 503 is formed by alternating arrangement of a number of arc grooves and a number of inclined sliding grooves. Both sides of the second sliding groove 503 are inclined sliding grooves. The central angle corresponding to the arc formed between adjacent two balls 8 is smaller than the central angle corresponding to the arc groove in the second sliding groove 503, which is used to ensure that the balls 8 have different rolling radii. The rolling tracks formed by all the balls 8 on the top of the lithium battery are closed circles, improving the uniformity of rolling. In the initial state, the second clamping block 502 is located at the top of the top inclined sliding groove. The rotation of the rotating frame 204 drives the adjusting shaft 501 to move downward, so that the adjusting shaft 501 drives the sliding frame 402, the pushing frame 403 and the adjusting frame 7 to drive the balls 8 to fit with the top of the lithium battery. At this time, the second clamping block 502 enters the arc groove, and the balls 8 start to roll the top of the lithium battery.

[0035] Working principle: When rolling the top of the lithium battery, the servo motor 201 is turned on. The output shaft of the servo motor 201 drives the rotating frame 204 to rotate through the first gear 202 and the second gear 203. At this time, the rotation of the rotating frame 204 drives the second sliding groove 503 thereon to rotate synchronously. The rotation of the second sliding groove 503 pushes the second clamping block 502 to move downward. The second clamping block 502 drives the adjusting shaft 501 to move downward synchronously. The adjusting shaft 501 pushes the sliding frame 402 to move downward along the rotating ring 401. The sliding frame 402 drives all the pushing frames 403 thereon to move downward synchronously, so that the pushing frame 403 drives the adjusting frame 7 to move downward synchronously by virtue of the acting force of the second elastic member 404 on the adjacent adjusting frame 7, and the second elastic member 404 is not compressed. At this time, the first clamping block 405 on the adjusting frame 7 slides downward along the adjacent first sliding groove 406, so that the balls 8 on the adjusting frame 7 fit with the top of the lithium battery. Subsequently, the first clamping block 405 slides to the inflection point of the first sliding groove 406. Then the adjusting shaft 501 continues to move downward, and the pushing frame 403 pushes the adjacent adjusting frame 7 to continue sliding along the first sliding groove 406, so that the balls 8 on the adjusting frame 7 move from the outside to the inside of the top of the lithium battery. At the same time, the second elastic member 404 is compressed. In this way, until the first clamping block 405 slides to the limit of the first sliding groove 406, at this time, the rolling operation of the lithium battery is completed. By making the balls 8 fit with the outside of the top of the lithium battery and gradually move from the outside to the inside, continuously changing the rolling radius of the balls 8 on the lithium battery, evenly pressing the outer shell at the sealing part of the top of the lithium battery, ensuring that the outer shell at the sealing part of the lithium battery is closely attached to the top of the lithium battery, and improving the firmness and sealing performance of the seal.

[0036] After the rolling operation of the lithium battery is completed, the staff drives the slide plate 4 to reset through the power module 3. At the same time, the output shaft of the servo motor 201 rotates in the reverse direction, so that the rotating frame 204 drives the second chute 503 thereon to rotate in the reverse direction. The second chute 503 drives the adjusting shaft 501 to reset to the initial state through the second clamping block 502. During this period, the adjusting shaft 501 drives a plurality of adjusting frames 7 to reset to the initial state through the sliding frame 402 and the pushing frame 403. At the same time, the second elastic member 404 resets to the initial state. When it is necessary to seal the lithium battery again, repeat the above steps.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An encapsulation device for the production of automotive lithium batteries, comprising an encapsulation table (1), the encapsulation table (1) is provided with a clamping table (2) for clamping lithium batteries, the encapsulation table (1) is fixedly connected with a power module (3), the encapsulation table (1) is slidably connected with a sliding plate (4), the power module (3) is used to drive the sliding plate (4) to move up and down along the encapsulation table (1), the sliding plate (4) is fixedly connected with a mold (5), characterized in that, A rotating ring (6) is rotatably connected inside the mold (5). The rotating ring (6) is slidably connected with circumferentially distributed adjusting frames (7). The adjusting frames (7) are provided with balls (8) for rolling and sealing. A driving component for driving the rotating ring (6) to rotate is arranged on the sliding plate (4). An extending component for synchronously changing the positions of all the adjusting frames (7) is arranged inside the mold (5). The extending component includes a rotating ring (401). The rotating ring (401) is rotatably connected inside the mold (5). The rotating ring (401) is slidably connected with a sliding frame (402). The sliding frame (402) is fixedly connected with pushing frames (403) having the same number as the adjusting frames (7). The pushing frames (403) are slidably connected with the corresponding adjusting frames (7). A second elastic member (404) is arranged between the pushing frame (403) and the corresponding adjusting frame (7) for stabilizing the position of the adjusting frame (7).

2. The encapsulation device for the production of automotive lithium batteries according to claim 1, characterized in that, The driving component includes a servo motor (201). The servo motor (201) is fixedly connected to the sliding plate (4). The output shaft of the servo motor (201) is fixedly connected with a first gear (202). A second gear (203) meshing with the first gear (202) is rotatably connected to the sliding plate (4). The second gear (203) is fixedly connected with a rotating frame (204). The rotating frame (204) is fixedly connected with the rotating ring (6). A stabilizing component for keeping the lithium battery pole column stable is arranged on the rotating frame (204).

3. An encapsulation device for the production of automotive lithium batteries according to claim 2, characterized in that, The stabilizing component includes a sliding shaft (301). The sliding shaft (301) is slidably connected to the rotating frame (204). The sliding shaft (301) passes through the rotating ring (6). The sliding shaft (301) is fixedly connected with a centering block (302). A first elastic member (303) is arranged between the sliding shaft (301) and the rotating frame (204). The central axis of the sliding shaft (301), the central axis of the centering block (302), the central axis of the rotating ring (6) and the central axis of the mold (5) coincide.

4. An encapsulation device for the production of automotive lithium batteries according to claim 3, characterized in that, An inclined surface is arranged on one side of the centering block (302) away from the sliding shaft (301) for centering the pole column of the lithium battery.

5. The encapsulation device for the production of automotive lithium batteries according to claim 3, characterized in that, The rotating ring (6) is provided with guiding grooves having the same number as the adjusting frames (7). The adjusting frames (7) slide in the corresponding guiding grooves. The adjusting frames (7) are fixedly connected with two symmetrically distributed first clamping blocks (405). Two symmetrically distributed first sliding grooves (406) are arranged in the guiding grooves of the rotating ring (6). The first clamping blocks (405) slide in the adjacent first sliding grooves (406).

6. The encapsulation device for the production of automotive lithium batteries according to claim 5, characterized in that, The first sliding groove (406) is an L-shaped groove for controlling the contact time between the ball (8) and the lithium battery.

7. An encapsulation device for the production of automotive lithium batteries according to claim 2, characterized in that, The mold (5) is slidably connected with an adjusting shaft (501), the adjusting shaft (501) is in limit sliding connection with the sliding frame (402), the adjusting shaft (501) is fixedly connected with a second clamping block (502), the rotating frame (204) is provided with a second sliding groove (503), and the second clamping block (502) slides in the second sliding groove (503).

8. A packaging device for the production of automotive lithium batteries according to claim 7, characterized in that, The second sliding groove (503) is formed by alternately arranging a plurality of arc-shaped grooves and a plurality of inclined sliding grooves, and both sides of the second sliding groove (503) are inclined sliding grooves.

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