Drying device for lithium battery cell production and drying method thereof

Abstract

The invention relates to the technical field of battery cell drying, in particular to a drying device for lithium battery cell production and a drying method of the drying device. Comprising a heat preservation box, a heating strip and a sensor are arranged in the heat preservation box, a net partition plate is arranged on one side of the heating strip, a supporting plate is arranged at the bottom of the heat preservation box, stand columns are arranged on the surface of the supporting plate, a motor is arranged at the bottom of the supporting plate, an end output shaft of the motor penetrates through the supporting plate, and a rotary table is arranged at the end of the end output shaft; when a battery cell is placed in the center of the cylindrical box, extrusion on a clamping plate is stopped, at the moment, external force borne by an elastic part disappears and resets, a sliding rod is pushed to move in the direction close to the battery cell, the sliding rod drives the clamping plate to automatically clamp and limit the outer wall of the battery cell, and the battery cell is conveniently and rapidly fed and discharged; and hot air flows into the cylindrical box through the through grooves to independently dry the battery cells, so that the drying efficiency of the battery cells is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery core drying, and in particular to a drying device and a drying method for producing lithium battery cells. Background Art

[0002] During the production of lithium batteries, it is necessary to remove residual moisture in the battery cells to prevent safety hazards. Currently, the main way to remove moisture is baking. The existing baking method is to heat the battery cells with a heating plate to remove moisture.

[0003] There are many existing technologies for drying devices for lithium battery cell production, such as:

[0004] Chinese patent publication number CN214148603U discloses a cylindrical lithium battery cell surface drying device, including a rectangular cavity, a motor is provided on the top of the cavity, a rotating shaft is provided below the motor, a fan is provided below the rotating shaft, a drying cavity is provided below the fan, a battery cell cavity is provided below the drying cavity, and a water storage cavity is provided below the battery cell cavity. Through the provided drying cavity, a desiccant can be placed therein, through the provided battery cell cavity, a battery cell can be placed therein, through the provided fan, the drying speed can be accelerated and the battery cell can be dried more fully, and through the provided water storage cavity, the dried water vapor can be collected in the water storage cavity. The modified design changes the traditional device for placing battery cells, which does not have the function of drying the surface of the battery cells. The modified design can better protect the battery cells, prolong the service life of the battery cells, and improve work efficiency.

[0005] However, in actual use, there are still some problems that need to be solved:

[0006] When drying round cells, it is common to lay them flat on the surface of the rack. However, during the drying process, the strong hot air flow can easily push the round cells to roll, causing them to collide with each other. Frequent collisions of cells will not only cause the fitting parts to be tightly squeezed, making it difficult for the hot air flow to fully penetrate, resulting in incomplete drying of the area, seriously affecting the uniformity of the overall drying of the cells; but also repeated impacts may cause deformation of the cell surface. Even slight deformations will cause hidden dangers in the subsequent assembly, charging and discharging of the cells, and greatly affect the performance and life of the cells.

[0007] Therefore, a drying device and a drying method for producing lithium battery cells are proposed. Summary of the invention

[0008] The object of the present invention is to provide a drying device and a drying method for producing lithium battery cells, so as to solve the problems raised in the above-mentioned background technology.

[0009] In order to solve the above technical problems, one of the objects of the present invention is to provide a drying device for lithium battery cell production, including an insulation box, a heating strip and a sensor are arranged inside the insulation box, a mesh partition is arranged on one side of the heating strip, a support plate is arranged at the bottom of the insulation box, a column is arranged on the surface of the support plate, a motor is arranged at the bottom of the support plate, an output shaft at the end of the motor passes through the support plate and a turntable is arranged at the end, a limiting groove is arranged at the bottom of the turntable, the limiting groove is fitted with the top of the column, a groove is arranged on the side wall of the turntable, a placement component is arranged on the surface of the turntable, the placement component is arranged in a row for placing battery cells, a protective component is arranged above the placement component, and the battery cells placed inside the placement component are protected and blocked by the protective component when the battery cells are rotated and dried, and fixed components are arranged on both sides of the placement component, and when the protective component protects the battery cells, it drives the fixed component to automatically fix the rotating battery cells.

[0010] As a further improvement of the technical solution, an auxiliary block is provided on the top of the support plate, and a limiting wheel is provided at the end of the auxiliary block, and the limiting wheel is tightly fitted with the inner wall of the groove.

[0011] As a further improvement of the present technical solution, the placement assembly includes a cylindrical box arranged on the top of the turntable, the end of the cylindrical box is provided with a placement opening, the placement opening is arc-shaped, the battery cell is placed inside the cylindrical box through the placement opening, and a through groove is provided on the surface of the cylindrical box.

[0012] As a further improvement of the present technical solution, column tubes are provided on both sides of the column box, a sliding groove is provided at the bottom of the column tube, a sliding rod is provided on the inner wall of the column tube for sliding, the sliding rod passes through the column box and a clamping plate is provided at the end, an elastic part is provided between the column tube and the sliding rod, and a tooth block is provided on the side of the sliding rod close to the end of the elastic part, and the tooth block slides in the sliding groove.

[0013] As a further improvement of the technical solution, the clamping plate is arc-shaped and fits the outer wall of the battery core, and air holes are provided on the surface of the clamping plate.

[0014] As a further improvement of the present technical solution, the protective component includes an electric telescopic rod arranged on the top of the insulation box, a baffle ring is provided at the end of the electric telescopic rod, and auxiliary plates are provided at the top and bottom of the baffle ring. When the battery cell is dry, the electric telescopic rod drives the baffle ring to move to the center of the placement port.

[0015] As a further improvement of the present technical solution, the fixing assembly includes vertical plates arranged on both sides of the cylindrical box, an extension block is provided on one side of the vertical plate, a rack is slidably provided on the inner wall of the extension block, a pressure plate is provided on the top of the rack, and a compression spring is provided between the pressure plate and the extension block.

[0016] As a further improvement of the technical solution, a gear rod is provided on one side of the compression spring, the gear rod passes through the vertical plate and an eccentric wheel is provided at the end, a toothed plate is provided on the top of the eccentric wheel, and when the eccentric wheel rotates, it drives the toothed plate to move in the vertical direction. When the electric telescopic rod drives the retaining ring to move downward in the vertical direction to the center position of the placement opening, the retaining ring presses the pressure plate provided on the top of the rack during the downward movement, so that the rack moves downward in the vertical direction.

[0017] The second object of the present invention is to provide a method for processing a drying device for producing lithium battery cells, comprising the drying device for producing lithium battery cells described in any one of the above, comprising the following steps:

[0018] S1. Place the battery cell in the cylindrical box from the placement opening. During the process of placing the battery cell, the clamping plate is squeezed to drive the slide bar to slide on the inner wall of the cylindrical tube. During the sliding process of the slide bar, the elastic member is squeezed to increase the space between the clamping plates. When the battery cell is placed at the center of the cylindrical box, the clamping plate is stopped from being squeezed. At this time, the external force on the elastic member disappears and resets, pushing the slide bar to move toward the battery cell. The slide bar drives the clamping plate to automatically clamp and limit the outer wall of the battery cell.

[0019] S2. Control the electric telescopic rod to drive the retaining ring to move vertically to the center of the placement opening, and use the retaining ring to block the direction in which the battery cell is thrown out by centrifugal force in advance to prevent the battery cell from directly hitting the inside of the incubator;

[0020] S3. When the auxiliary plate provided at the bottom of the retaining ring presses the pressure plate during movement, the rack moves vertically downward inside the extension block, and the rack moves to drive the gear rod to mesh and rotate, and the gear rod rotates to drive the eccentric wheel to rotate coaxially. When the electric telescopic rod drives the retaining ring to move to the set position, the top of the eccentric part of the eccentric wheel is vertically fitted with the bottom of the toothed plate, and the toothed plate is pushed by the eccentric wheel to move upward in the vertical direction, so that the toothed plate clamps and fixes the tooth block, thereby fixing the position of the slide rod.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The drying device for producing lithium battery cells places the cells in a cylindrical box from a placement port. During the process of placing the cells, the sliding bar is driven to slide on the inner wall of the cylindrical tube by squeezing the clamping plate. During the sliding process of the sliding bar, the elastic member is squeezed to increase the space between the clamping plates. When the cell is placed at the center of the cylindrical box, the clamping plate is stopped from being squeezed. At this time, the external force on the elastic member disappears and resets, pushing the sliding bar to move toward the cell. The sliding bar drives the clamping plate to automatically clamp and limit the outer wall of the cell, which is convenient for quickly loading and unloading the cell. Since a plurality of through grooves are opened on the surface of the cylindrical box, hot air flows through the through grooves into the interior of the cylindrical box to independently dry the cells, thereby improving the drying efficiency of the cell.

[0023] 2. The drying device for lithium battery cell production controls the electric telescopic rod to drive the retaining ring to move vertically to the center of the placement port. The retaining ring blocks the direction in which the battery cell is thrown out by centrifugal force in advance, thereby preventing the battery cell from directly hitting the inside of the insulation box, reducing the impact force of the battery cell collision, and improving the safety of the drying device.

[0024] 3. In the drying device for producing lithium battery cells, when the auxiliary plate provided at the bottom of the retaining ring moves and presses the pressure plate, the rack moves vertically downward inside the extension block, and when the rack moves, it drives the gear rod to engage and rotate, and when the gear rod rotates, it drives the eccentric wheel to rotate coaxially. When the electric telescopic rod drives the retaining ring to move to the set position, the top of the eccentric part of the eccentric wheel is vertically fitted with the bottom of the toothed plate, and the toothed plate is pushed by the eccentric wheel to move upward in the vertical direction, so that the toothed plate clamps and fixes the tooth block, thereby fixing the position of the slide rod, thereby improving the stability of the battery cell during drying and ensuring the safety of the battery cell during drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the support plate structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the protection component of the present invention;

[0029] Figure 5 A cross-sectional view of a placement assembly of the present invention;

[0030] Figure 6 is a cross-sectional view of a turntable of the present invention;

[0031] Figure 7 For the present invention Figure 6 Schematic diagram of point A.

[0032] The meaning of each number in the figure is:

[0033] 100, thermal insulation box; 101, heating strip; 102, partition; 103, sensor;

[0034] 200, support plate; 201, motor; 202, turntable; 203, groove; 204, column; 205, auxiliary block; 206, limit wheel;

[0035] 300, placement assembly; 301, cylindrical box; 302, placement opening; 303, through slot; 304, column tube; 305, slide rod; 306, elastic member; 307, tooth block; 308, splint; 309, air vent;

[0036] 400, protection assembly; 401, electric telescopic rod; 402, retaining ring; 403, auxiliary plate;

[0037] 500, fixed assembly; 501, vertical plate; 502, rack; 503, compression spring; 504, gear rod; 505, eccentric wheel; 506, toothed plate. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0039] One of the purposes of the present invention is to Figure 1-Figure 7 As shown, a drying device for lithium battery cell production is provided, including an insulation box 100, a heating strip 101 and a sensor 103 are arranged inside the insulation box 100, a mesh partition 102 is arranged on one side of the heating strip 101, a support plate 200 is arranged at the bottom of the insulation box 100, a column 204 is arranged on the surface of the support plate 200, a motor 201 is arranged at the bottom of the support plate 200, an output shaft at the end of the motor 201 passes through the support plate 200 and a turntable 202 is arranged at the end, and a limit groove is arranged at the bottom of the turntable 202, and the limit groove and the column 204 are connected. 4, a groove 203 is provided on the side wall of the turntable 202, a placement assembly 300 is provided on the surface of the turntable 202, the placement assembly 300 is arranged in a row for placing the battery cells, a protection assembly 400 is provided above the placement assembly 300, when the battery cells are rotated and dried, the protection assembly 400 is used to protect and isolate the battery cells placed inside the placement assembly 300, and fixing assemblies 500 are provided on both sides of the placement assembly 300, when the protection assembly 400 protects the battery cells, it drives the fixing assembly 500 to automatically fix the rotating battery cells.

[0040] Considering that when the battery cells are being dried, in order to prevent the turntable 202 from shaking and causing the battery cells to hit the cylindrical box 301, an auxiliary block 205 is provided on the top of the support plate 200, and a limiting wheel 206 is provided at the end of the auxiliary block 205. When the turntable 202 rotates, the limiting wheel 206 fits tightly against the inner wall of the groove 203. When the battery cells are being dried, the internal temperature of the insulation box 100 is monitored in real time by the sensor 103, and the temperature is adjusted to the set drying temperature in real time. The output shaft of the motor 201 is controlled to drive the turntable 202 to rotate on the surface of the column 204. At the same time, the turntable 202 is limited by the limiting wheel 206 set at the limiting position of the groove 203 when it rotates, thereby ensuring that the turntable 202 maintains stability when it rotates and preventing the shaking of the turntable 202 from affecting the stability of the battery cells placed in the cylindrical box 301.

[0041] During the drying process of the battery cells, since the surface of the battery cells is in an arc shape, when the battery cells are blown by the hot air flow and roll and collide with each other during the drying process, the battery cells are not dried sufficiently at the bonding position, and the operator needs to frequently turn the battery cells, which affects the drying efficiency of the battery cells. Moreover, when the battery cells roll and collide, the surface of the battery cells may be deformed, which affects the safety of the battery cells. Therefore, the placement component 300 includes a cylindrical box 301 arranged on the top of the turntable 202, and a placement opening is opened at the end of the cylindrical box 301. 302, the placement opening 302 is arc-shaped, and the battery cell is placed inside the cylindrical box 301 through the placement opening 302. A through groove 303 is provided on the surface of the cylindrical box 301. Column barrels 304 are provided on both sides of the cylindrical box 301. A sliding groove is provided at the bottom of the column barrel 304. A sliding rod 305 is slidingly provided on the inner wall of the column barrel 304. The sliding rod 305 passes through the cylindrical box 301 and a clamping plate 308 is provided at the end. An elastic member 306 is provided between the column barrel 304 and the sliding rod 305. The sliding rod 305 is close to the end of the elastic member 306 A tooth block 307 is provided on one side, and the tooth block 307 slides in the slide groove. When the battery cell is dried, the opening of the placement port 302 is larger than the diameter of the battery cell. By placing the battery cell in the cylindrical box 301 from the placement port 302, the sliding rod 305 is driven to slide on the inner wall of the cylindrical tube 304 by squeezing the clamping plate 308 during the placement of the battery cell. The elastic member 306 is squeezed during the sliding process of the sliding rod 305, so that the space between the clamping plates 308 is increased. When the battery cell is placed at the center of the cylindrical box 301, the battery cell stops. The clamping plate 308 is stopped from being squeezed. At this time, the external force on the elastic member 306 disappears and resets, pushing the sliding rod 305 to move towards the direction close to the battery cell. The sliding rod 305 drives the clamping plate 308 to automatically clamp and limit the outer wall of the battery cell. Since a plurality of through grooves 303 are provided on the surface of the cylindrical box 301, hot air flows into the interior of the cylindrical box 301 through the through grooves 303 to independently dry the battery cells. The turntable 202 cooperates with the battery cell to rotate, so as to evenly dry the inside of the battery cell and improve the drying efficiency of the battery cell.

[0042] Since the surface of the battery cell is relatively smooth, in order to improve the stability of the clamp 308 in limiting the surface of the battery cell, the clamp 308 is arc-shaped and fits against the outer wall of the battery cell, and an air hole 309 is provided on the surface of the clamp 308. By setting the clamp 308 to an arc shape, when the sliding rod 305 provided at the end of the clamp 308 is pushed by the force of the elastic member 306, the clamp 308 can fit closely against the surface of the battery cell, thereby increasing the force area and improving the stability of limiting the battery cell, while preventing the battery cell from being deformed due to excessive pressure.

[0043] Considering that when the turntable 202 drives the placement assembly 300 to rotate, when the turntable 202 rotates at a high speed, the battery core is squeezed by the centrifugal force on the clamping plate 308, and it is easy to break away from the placement port 302 and hit the inside of the incubator 100, causing damage to the battery core and generating safety hazards. In addition, the protective assembly 400 includes an electric telescopic rod 401 arranged on the top of the incubator 100, and a retaining ring 402 is provided at the end of the electric telescopic rod 401. The top and bottom of the retaining ring 402 are provided with auxiliary plates 4 03. When the battery cell is drying, the electric telescopic rod 401 drives the retaining ring 402 to move to the center of the placement opening 302. When the battery cell is drying, the electric telescopic rod 401 is controlled to drive the retaining ring 402 to move vertically to the center of the placement opening 302. The retaining ring 402 blocks the direction in which the battery cell is thrown out by centrifugal force in advance to prevent the battery cell from directly hitting the inside of the thermal insulation box 100, reduce the impact force of the battery cell collision, reduce the probability of spontaneous combustion inside the battery cell, and improve the safety of drying.

[0044] When in use, the opening of the placement port 302 is larger than the diameter of the battery cell. The battery cell is placed in the cylindrical box 301 from the placement port 302. During the process of placing the battery cell, the clamping plate 308 is squeezed to drive the slide bar 305 to slide on the inner wall of the cylindrical tube 304. The elastic member 306 is squeezed during the sliding process of the slide bar 305 to increase the space between the clamping plates 308. When the battery cell is placed at the center of the cylindrical box 301, the clamping plate 308 is stopped from being squeezed. At this time, the external force on the elastic member 306 disappears and resets, pushing the slide bar 305 to move toward the battery cell. The slide bar 305 drives the clamping plate 308 to automatically clamp and limit the outer wall of the battery cell. Since a plurality of through grooves 303 are opened on the surface of the cylindrical box 301, hot air flows through the through grooves 303 into the interior of the cylindrical box 301 to independently dry the battery cells, thereby improving the drying efficiency of the battery cells.

[0045] When the battery cell is placed, the electric telescopic rod 401 is controlled to drive the retaining ring 402 to move vertically to the center of the placement opening 302, and the retaining ring 402 is used to block and protect the battery cell from being thrown out by centrifugal force in advance, so as to prevent the battery cell from directly hitting the inside of the incubator 100, reduce the impact force of the battery cell, reduce the probability of spontaneous combustion inside the battery cell, and improve the safety of drying;

[0046] The electric telescopic rod 401 drives the retaining ring 402 to move vertically downward to the center of the placement opening 302. During the movement of the auxiliary plate 403 at the bottom of the retaining ring 402, the pressure plate at the top of the rack 502 is pressed, so that the rack 502 moves vertically downward inside the extension block. When the rack 502 moves, it drives the gear rod 504 to mesh and rotate. When the gear rod 504 rotates, it drives the eccentric wheel 505 to rotate coaxially. When the electric telescopic rod 401 drives the retaining ring 402 to move to the set position, the top of the eccentric part of the eccentric wheel 505 is vertical to the bottom of the toothed plate 506. The toothed plate 506 is pushed by the eccentric wheel 505 to move upward in the vertical direction, so that the toothed plate 506 clamps and fixes the tooth block 307, thereby fixing the position of the slide bar 305, ensuring that the splint 308 is always in contact with the surface of the battery cell when the turntable 202 rotates, thereby improving the stability of the battery cell during drying and ensuring the safety of the battery cell during drying. When drying, the output shaft of the control motor 201 drives the turntable 202 to rotate, and when the turntable 202 rotates, it drives the battery cell to rotate inside the insulation box 100, so that the battery cell is heated evenly and the drying efficiency of the battery cell is improved.

[0047] In order to improve the stability of the battery cell and prevent the battery cell from shaking inside the cylindrical box 301 due to the centrifugal force, causing the battery cell to collide with the cylindrical box 301 and deform, the fixing assembly 500 includes a vertical plate 501 arranged on both sides of the cylindrical box 301, an extension block is arranged on one side of the vertical plate 501, a rack 502 is slidably arranged on the inner wall of the extension block, a pressure plate is arranged on the top of the rack 502, a compression spring 503 is arranged between the pressure plate and the extension block, a gear rod 504 is arranged on one side of the compression spring 503, and a gear rod 504 is arranged on the other side of the gear rod 504. The wheel rod 504 passes through the vertical plate 501 and is provided with an eccentric wheel 505 at the end. A toothed plate 506 is provided on the top of the eccentric wheel 505. When the eccentric wheel 505 rotates, the toothed plate 506 is driven to move in the vertical direction. When the electric telescopic rod 401 drives the retaining ring 402 to move down in the vertical direction to the center of the placement opening 302, the retaining ring 402 presses the pressure plate provided on the top of the rack 502 during the downward movement, so that the rack 502 moves downward in the vertical direction. When the battery cell is dried, the electric The telescopic rod 401 drives the retaining ring 402 to move downward in the vertical direction to the center position of the placement opening 302. During the movement of the auxiliary plate 403 provided at the bottom of the retaining ring 402, the pressure plate provided at the top of the rack 502 is pressed, so that the rack 502 moves vertically downward inside the extension block. When the rack 502 moves, it drives the gear rod 504 to mesh and rotate. When the gear rod 504 rotates, it drives the eccentric wheel 505 to rotate coaxially. When the electric telescopic rod 401 drives the retaining ring 402 to move to the set position, at this time, the eccentric top of the eccentric part of the eccentric wheel 505 is vertically fitted with the bottom of the toothed plate 506, and the toothed plate 506 is pushed by the eccentric wheel 505 to move upward in the vertical direction, so that the toothed plate 506 clamps and fixes the tooth block 307, thereby fixing the position of the slide bar 305, ensuring that the clamping plate 308 provided at the end of the slide bar 305 is always in contact with the surface of the battery cell when the turntable 202 rotates, thereby improving the stability of the battery cell during drying and ensuring the safety of the battery cell during drying.

[0048] The second object of the present invention is to provide a method for processing a drying device for producing lithium battery cells, comprising any one of the above-mentioned drying devices for producing lithium battery cells, comprising the following steps:

[0049] S1. Place the battery cell in the cylindrical box 301 from the placement opening 302. During the process of placing the battery cell, squeeze the clamping plate 308 to drive the slide bar 305 to slide on the inner wall of the cylindrical tube 304. During the sliding process of the slide bar 305, the elastic member 306 is squeezed to increase the space between the clamping plates 308. When the battery cell is placed at the center of the cylindrical box 301, stop squeezing the clamping plate 308. At this time, the external force on the elastic member 306 disappears and resets, pushing the slide bar 305 to move towards the battery cell. The slide bar 305 drives the clamping plate 308 to automatically clamp and limit the outer wall of the battery cell.

[0050] S2, control the electric telescopic rod 401 to drive the retaining ring 402 to move vertically to the center of the placement opening 302, and use the retaining ring 402 to block and protect the direction in which the battery core is thrown out by centrifugal force in advance, so as to prevent the battery core from directly hitting the inside of the incubator 100, reduce the impact force of the battery core, reduce the probability of spontaneous combustion inside the battery core, and improve the safety of drying;

[0051] S3. When the auxiliary plate 403 provided at the bottom of the retaining ring 402 presses the pressure plate during its movement, the rack 502 moves vertically downward inside the extension block. When the rack 502 moves, it drives the gear rod 504 to engage and rotate. When the gear rod 504 rotates, it drives the eccentric wheel 505 to rotate coaxially. When the electric telescopic rod 401 drives the retaining ring 402 to move to the set position, the top of the eccentric part of the eccentric wheel 505 is vertically fitted with the bottom of the toothed plate 506. The toothed plate 506 is pushed by the eccentric wheel 505 to move upward in the vertical direction, so that the toothed plate 506 clamps and fixes the tooth block 307.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A drying device for lithium battery cell production, characterized in that: The invention comprises a heat preservation box (100), wherein a heating strip (101) and a sensor (103) are arranged inside the heat preservation box (100), a mesh partition (102) is arranged on one side of the heating strip (101), a support plate (200) is arranged at the bottom of the heat preservation box (100), a column (204) is arranged on the surface of the support plate (200), a motor (201) is arranged at the bottom of the support plate (200), an output shaft at the end of the motor (201) passes through the support plate (200) and a turntable (202) is arranged at the end, and a limit groove is arranged at the bottom of the turntable (202), and the limit groove is attached to the top of the column (204). The turntable (202) is combined, a groove (203) is provided on a side wall of the turntable (202), a placement assembly (300) is provided on the surface of the turntable (202), the placement assemblies (300) are arranged in a row for placing battery cells, a protection assembly (400) is provided above the placement assembly (300), and when the battery cells are rotated and dried, the protection assembly (400) is used to protect and isolate the battery cells placed inside the placement assembly (300), and fixing assemblies (500) are provided on both sides of the placement assembly (300), and when the protection assembly (400) protects the battery cells, it drives the fixing assembly (500) to automatically fix the rotating battery cells.

2. The drying device for producing lithium battery cells according to claim 1, characterized in that: An auxiliary block (205) is provided on the top of the support plate (200), and a limiting wheel (206) is provided on the end of the auxiliary block (205), and the limiting wheel (206) is tightly fitted with the inner wall of the groove (203).

3. The drying device for producing lithium battery cells according to claim 1, characterized in that The placement component (300) includes a cylindrical box (301) arranged on the top of the turntable (202), and a placement opening (302) is opened at the end of the cylindrical box (301). The placement opening (302) is arc-shaped, and the battery cell is placed inside the cylindrical box (301) through the placement opening (302). A through groove (303) is opened on the surface of the cylindrical box (301).

4. The drying device for producing lithium battery cells according to claim 3, characterized in that: The cylindrical box (301) is provided with a cylindrical tube (304) on both sides, and a sliding groove is opened at the bottom of the cylindrical tube (304). A sliding rod (305) is slidably provided on the inner wall of the cylindrical tube (304). The sliding rod (305) passes through the cylindrical box (301) and a clamping plate (308) is provided at the end. An elastic member (306) is provided between the cylindrical tube (304) and the sliding rod (305). A tooth block (307) is provided on one side of the sliding rod (305) close to the end of the elastic member (306), and the tooth block (307) slides in the sliding groove.

5. The drying device for producing lithium battery cells according to claim 4, characterized in that: The clamping plate (308) is arc-shaped and fits the outer wall of the battery core, and a vent hole (309) is provided on the surface of the clamping plate (308).

6. The drying device for producing lithium battery cells according to claim 1, characterized in that: The protection assembly (400) comprises an electric telescopic rod (401) arranged on the top of the heat preservation box (100); a retaining ring (402) is arranged at the end of the electric telescopic rod (401); auxiliary plates (403) are arranged at the top and bottom of the retaining ring (402); when the battery cell is dry, the electric telescopic rod (401) drives the retaining ring (402) to move to the center position of the placement opening (302).

7. The drying device for producing lithium battery cells according to claim 1, characterized in that: The fixing assembly (500) comprises vertical plates (501) arranged on both sides of the cylindrical box (301), an extension block is arranged on one side of the vertical plate (501), a rack (502) is slidably arranged on the inner wall of the extension block, a pressure plate is arranged on the top of the rack (502), and a compression spring (503) is arranged between the pressure plate and the extension block.

8. The drying device for producing lithium battery cells according to claim 7, characterized in that: A gear rod (504) is provided on one side of the compression spring (503). The gear rod (504) passes through the vertical plate (501) and an eccentric wheel (505) is provided at the end thereof. A toothed plate (506) is provided at the top of the eccentric wheel (505). When the eccentric wheel (505) rotates, the toothed plate (506) is driven to move in a vertical direction. When the electric telescopic rod (401) drives the retaining ring (402) to move downward in a vertical direction to the center position of the placement opening (302), the retaining ring (402) presses a pressure plate provided at the top of the rack (502) during the downward movement, so that the rack (502) moves downward in a vertical direction.

9. A method for using a drying device for producing lithium battery cells, which is realized by the drying device for producing lithium battery cells according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Place the battery cell from the placement opening (302) into the cylindrical box (301). During the process of placing the battery cell, the clamping plate (308) is squeezed to drive the slide bar (305) to slide on the inner wall of the cylindrical tube (304). During the sliding process of the slide bar (305), the elastic member (306) is squeezed to increase the space between the clamping plates (308). When the battery cell is placed at the center of the cylindrical box (301), the clamping plate (308) is stopped from being squeezed. At this time, the external force on the elastic member (306) disappears and resets, pushing the slide bar (305) to move towards the battery cell. The slide bar (305) drives the clamping plate (308) to automatically clamp and limit the outer wall of the battery cell. S2, controlling the electric telescopic rod (401) to drive the retaining ring (402) to move in a vertical direction to the center of the placement opening (302), and using the retaining ring (402) to block and protect the direction in which the battery core is thrown out by centrifugal force in advance, so as to prevent the battery core from directly hitting the inside of the thermal insulation box (100); S3. When the auxiliary plate (403) provided at the bottom of the retaining ring (402) presses the pressure plate during movement, the rack (502) moves vertically downward inside the extension block. When the rack (502) moves, it drives the gear rod (504) to mesh and rotate. When the gear rod (504) rotates, it drives the eccentric wheel (505) to rotate coaxially. When the electric telescopic rod (401) drives the retaining ring (402) to move to the set position, the top of the eccentric part of the eccentric wheel (505) is vertically fitted with the bottom of the toothed plate (506). The toothed plate (506) is pushed by the eccentric wheel (505) to move upward in the vertical direction, so that the toothed plate (506) is clamped and fixed to the tooth block (307), thereby fixing the position of the slide bar (305).

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