A device for preventing side leakage of lithium battery coating slurry and its use method

Abstract

The present invention relates to the technical field of lithium battery coating equipment, and discloses a device for preventing lithium battery coating slurry side leakage and a method for using the device, comprising a bracket, a control rod is provided on the top of the bracket, a connecting rod is provided on one side of the top of the control rod, a connecting block is provided at the bottom of the connecting rod, a control structure is provided at the bottom of the connecting block, a bottom plate is provided inside the bracket, and a limiting structure is provided on the top of the bottom plate. The control structure provided by the present invention can form a relatively balanced space through the repulsive force between magnets. When thick edges appear on the coated coating, the repulsive space will be compressed. After compression, linkage control will be triggered to transform the fixed plate and the rotating plate at the bottom of the sleeve into a V-shape or an inverted V-shape, which respectively correspond to the generation of thick edge effect and excessive accumulation in the middle, thereby maximizing the uniformity of the coating on the coating surface and preventing the generation of thick edges that affect the use of subsequent coating.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery coating equipment, and in particular to a device for preventing side leakage of lithium battery coating slurry and a method for using the device. Background Art

[0002] The main functions of lithium battery coating include the following: Improving battery performance. By uniformly coating a layer of active substances such as oxides, carbonates, phosphates, etc. on the surface of the electrode, the reaction area of ​​the electrode can be increased, the transmission efficiency of electrons and ions can be improved, and the energy density and cycle life of the battery can be improved to protect the core materials of the battery. The coating film can isolate the corrosion and damage of the core materials of the battery by air, water and other chemicals, and improve the safety performance of the battery. Coating can prevent the battery from thermal runaway and other dangerous situations due to short circuits, overcurrent and other problems, and improve the quality of the battery. Coating can evenly cover the surface of the battery, prevent defects in the electrode material during the manufacturing process, improve the reliability and life of the battery, and enhance the durability of the battery. Adding special ingredients such as polymers and conductive materials during the coating process can produce uniform thickness and strength, enhance the durability and stability of the battery, and prevent overreaction. Coating can slow down the reaction between electrodes, protect the battery and extend its service life. In summary, lithium battery coating is a key process that is essential to improving battery performance, safety and durability.

[0003] During the coating process of lithium battery production, the edge is thick and the middle is thin, which is called thick edge. The reason for the thick edge is the material migration driven by surface tension. At the beginning, the edge of the wet film is thinner, and the solvent evaporates faster than the middle, resulting in a rapid increase in the solid content at the edge. The surface tension at the edge is much greater than the surface tension of the wet film in the middle. The larger surface tension at the edge and the faster solvent evaporation drive the inner liquid to move to the edge, forming a thick edge after drying, which affects the later use. Summary of the invention

[0004] The problem to be solved by the present invention is that the lithium battery coating slurry will gather toward the edge of the coating due to the edge effect, resulting in uneven coating.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a device for preventing the side leakage of lithium battery coating slurry and a method for using the same, comprising a bracket, a control rod is provided on the top of the bracket, a connecting rod is provided on one side of the top of the control rod, a connecting block is provided at the bottom of the connecting rod, a control structure is provided at the bottom of the connecting block, a bottom plate is provided inside the bracket, a limiting structure is provided on the top of the bottom plate, a plurality of clamping rings are provided around the bottom plate, the clamping ring is adapted to the bracket, a fixing screw is passed through one side of the clamping ring, the control structure comprises a docking plate, a docking plate is provided on the front and rear sides of the bottom of the docking plate, a telescopic plate is provided at the bottom of the docking plate, a hydraulic rod is provided on one side of the telescopic plate, the hydraulic The rod can control the extension or contraction of the telescopic plate. An auxiliary wheel is rotatably provided on one side of the inner wall of the telescopic plate. A fixed plate is provided between the opposite sides of the two telescopic plates. A telescopic rod is provided at the bottom of the fixed plate. The bottom of the telescopic rod is fixedly connected to the top of the bottom plate. Rotating plates are rotatably provided on both sides of the fixed plate. A torque spring is provided at the rotating connection between the rotating plate and the fixed plate. Trapezoidal blocks are provided on the top of the fixed plate and the rotating plate. A push rod is provided on the top of the fixed plate and the rotating plate. A sleeve is provided on the top of the push rod. Magnets are provided on the top of the inner wall of the sleeve and the top of the push rod. A controller is provided on the top of one side of the inner wall of the sleeve. The controller is triggered by contact with the magnet. A soft pad is provided on the top of the sleeve.

[0006] Preferably, the limiting structure includes a spring plate, a plurality of springs are provided at the bottom of the spring plate in a rectangular array, the bottom of the springs are fixedly connected to the top of the base plate, a shell is provided at the top of the spring plate, opposing screw rods are provided inside the shell, and a handle is provided on the back of the shell.

[0007] Preferably, movable rods are slidably provided on both sides of the shell, the movable rods are adapted to the opposite screw rods, the top of the movable rods are in a straight line shape with a plurality of limiting wheels, a plurality of rollers are provided on both sides of the top of the spring plate, and outer shells are fixed on both sides of the front and back of the bottom plate.

[0008] Preferably, a threaded rod is provided at the bottom of the inner wall of the shell, the top of the threaded rod passes through the shell and extends to the outside of the shell, a knob is provided at the top of the threaded rod, a pressure rod is movably provided on the threaded rod, and a pressure plate is provided at the bottom of the pressure rod.

[0009] Preferably, a refrigerator is provided at the bottom of the base plate, and a wind hood is provided on one side of the bottom of the base plate. The wind hood is fixedly connected to the refrigerator through a connecting pipe, and the front and back sides of the wind hood are fixedly connected with air outlet pipes, and the two air outlet pipes are fixedly connected with air outlets on opposite sides.

[0010] S1: The user pulls the coating with slurry on the surface out of the soft pad, and then moves the coating to one side with the roller and the limit wheel. The surface coating has not solidified after the coating comes out of the coating equipment. When the thick edge effect occurs, the weight in the middle will be smaller and the weight on both sides will be larger. When the thick edge is formed, the coating will squeeze the sleeve downward on both sides due to the change in its weight when passing through the soft pad. When the sleeve is subjected to force, the repulsive space formed by the two magnets will be compressed. When the two magnets are compressed to touch the controller in the middle position, the two hydraulic rods will be activated to shrink inward, and the hydraulic rods will drive the two rotating plates to rotate upward with the rotating connection with the fixed plate as the center of the circle, so that the fixed plate cooperates with the two rotating plates to form a " / ˉ\" shape, and the slurry gathered on both sides will flow back to the middle. When the weight in the middle is too heavy, the sleeve in the middle is compressed. After the controller is started, it will control the hydraulic rod to extend outward, and the fixed plate cooperates with the two rotating plates to form a reverse "\_ / " shape, so that the slurry can flow to both sides, so as to avoid the thick edge effect on the coating and make the coating surface more uniform;

[0011] S2: When the coating passes through the cushion, the refrigerator is started, and the refrigerator outputs cold air into the hood. The cold air will eventually reach the air outlet through the air outlet pipe. Since the cold air will move downward, the cold air will flow downward from the air outlet. The coating that contacts the cold air will solidify faster, avoiding the thick edge effect after balancing. When the user needs to adjust the overall moving height of the coating in the later stage, it can be adjusted through the cooperation between the bottom plate and the clamp ring. When adjusting, you only need to loosen and tighten the fixing screws to control the clamp ring to slide up and down along the bracket;

[0012] S3: After the coating passes through the control structure and the air outlet, it will pass through the roller and the limit wheel. The limit wheel cooperates with the roller to ensure the normal passage of the subsequent coating. The limit wheel allows the coating to maintain an accurate position so that it moves from the exact center of the cushion to avoid sensing errors. The limit wheel can be adjusted according to coatings of different sizes. When adjusting, you only need to rotate the handle. The handle drives the opposing screws in the shell to rotate, and the opposing screws drive the movable rods to move oppositely or in opposite directions so that the coating is always in the exact center of the equipment to ensure the accuracy of the sleeve sensing under the cushion. The spring plate is fine-tuned by rotating the knob to align the position. The knob drives the pressure plate downward through the threaded rod to apply pressure to the spring plate. There are several pressure plates, and the height and left and right inclination of the spring plate can be freely controlled according to actual needs.

[0013] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0014] (1) A control structure is provided on the bracket, and the control structure can form a relatively balanced space through the repulsive force between the magnets. When the coating on the coating has a thick edge phenomenon, the repulsive space will be compressed. After compression, the linkage control will be triggered to transform the fixed plate and the rotating plate at the bottom of the three sleeves into a V shape or an inverted V shape, which respectively correspond to the generation of the thick edge effect and excessive accumulation in the middle, so as to maximize the uniformity of the coating on the coating surface and prevent the generation of thick edges that affect the normal use of subsequent coatings. In addition, an air outlet is also provided on the bottom plate for matching use. The air outlet can discharge the cold air produced by the refrigerator to the coating that has just been set uniformly, so that the slurry on the coating can solidify more quickly, avoid the thick edge effect during subsequent transportation, and further improve the uniform solidification of the slurry on the coating surface;

[0015] (2) A limiting structure is also provided on the bracket. The limiting structure can reduce friction and limit the position of the coating movement by cooperating between the roller and the limiting wheel. The roller can reduce the friction between the roller and the bottom of the coating to make it move more smoothly. The limiting wheel can be controlled to move by the opposing screw rod. It can control the limit according to the coating of different sizes, so that the coating can always be kept in the center of the device, and the coating can be more accurate when passing through the control structure, avoiding tilting and causing errors in the control structure to affect the uniformity of the slurry on the coating surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a side view schematic diagram of the overall structure of the present invention;

[0018] Figure 3 It is a bottom view schematic diagram of the overall structure of the present invention;

[0019] Figure 4 It is a schematic diagram of the control structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the cushion structure of the present invention;

[0021] Figure 6 It is a schematic diagram of the internal structure of the sleeve of the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of the pressing plate of the present invention;

[0023] Figure 8 This is a schematic diagram of the bottom plate structure of the present invention;

[0024] Fig. 9 This is a schematic diagram of the spring plate structure of the present invention;

[0025] Fig.10 It is a schematic diagram of the structure of the refrigerator of the present invention;

[0026] Fig.11 It is a schematic diagram of the shell structure of the present invention.

[0027] In the figure: 1. limit structure; 101. shell; 102. knob; 103. threaded rod; 104. pressure rod; 105. pressure plate; 106. roller; 107. limit wheel; 108. movable rod; 109. spring plate; 110. spring; 111. shell; 2. control rod; 3. snap ring; 4. bracket; 5. connecting rod; 6. connecting block; 7. control structure; 701. connecting plate; 702. sleeve; 703. telescopic plate; 704. docking plate; 705. hydraulic rod; 706. auxiliary wheel; 707. cushion; 708. trapezoidal block; 709. controller; 710. fixed plate; 711. rotating plate; 712. push rod; 713. magnet; 8. bottom plate; 9. wind hood; 10. refrigerator; 11. air outlet; 12. air outlet. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0029] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] like Figures 1 to 11As shown, a device for preventing side leakage of lithium battery coating slurry provided by the present invention and a method for using the same include a bracket 4, a control rod 2 is provided on the top of the bracket 4, a connecting rod 5 is provided on one side of the top of the control rod 2, a connecting block 6 is provided on the bottom of the connecting rod 5, a control structure 7 is provided on the bottom of the connecting block 6, a bottom plate 8 is provided inside the bracket 4, a limiting structure 1 is provided on the top of the bottom plate 8, a plurality of clamping rings 3 are provided around the bottom plate 8, the clamping ring 3 is adapted to the bracket 4, a fixing screw is passed through one side of the clamping ring 3, the control structure 7 includes a docking plate 704, a docking plate 701 is provided on the front and rear sides of the bottom of the docking plate 704, a telescopic plate 703 is provided on the bottom of the docking plate 701, a hydraulic rod 705 is provided on one side of the telescopic plate 703, the hydraulic rod 705 can control the extension or contraction of the telescopic plate 703, and the inner wall of the telescopic plate 703 An auxiliary wheel 706 is rotatably provided on one side, a fixed plate 710 is provided between the opposite sides of the two telescopic plates 703, a telescopic rod is provided at the bottom of the fixed plate 710, and the bottom of the telescopic rod is fixedly connected to the top of the bottom plate 8, rotating plates 711 are rotatably provided on both sides of the fixed plate 710, and a torque spring is provided at the rotation connection between the rotating plate 711 and the fixed plate 710, trapezoidal blocks 708 are provided on the tops of the fixed plate 710 and the rotating plate 711, and push rods 712 are provided on the tops of the fixed plate 710 and the rotating plate 711, and sleeves 702 are sleeved on the tops of the push rods 712, and magnets 713 are provided on the tops of the inner walls of the sleeves 702 and the tops of the push rods 712, and a controller 709 is provided on the tops of one side of the inner wall of the sleeves 702, and the controller 709 is triggered by contact with the magnets 713, and a cushion 707 is provided on the tops of the sleeves 702.

[0031] The limiting structure 1 includes a spring plate 109, the bottom of which is provided with a plurality of springs 110 in a rectangular array, the bottom of the spring 110 is fixedly connected to the top of the bottom plate 8, a shell 111 is provided on the top of the spring plate 109, opposing screw rods are provided inside the shell 111, and a handle is provided on the back of the shell 111.

[0032] Movable rods 108 are slidably provided on both sides of the shell 111, and the movable rods 108 are adapted to the opposite screw rods. The top of the movable rod 108 is in a straight line shape with several limiting wheels 107, and several rollers 106 are provided on both sides of the top of the spring plate 109. The shell 101 is fixed on both sides of the front and back of the bottom plate 8.

[0033] A threaded rod 103 is provided at the bottom of the inner wall of the shell 101, the top of the threaded rod 103 passes through the shell 101 and extends to the outside of the shell 101, a knob 102 is provided at the top of the threaded rod 103, a pressure rod 104 is movably provided on the threaded rod 103, and a pressure plate 105 is provided at the bottom of the pressure rod 104.

[0034] A refrigerator 10 is provided at the bottom of the base plate 8, and a hood 9 is provided on one side of the bottom of the base plate 8. The hood 9 is fixedly connected to the refrigerator 10 through a connecting pipe. The front and back sides of the hood 9 are fixedly connected to air outlet pipes 11, and the opposite sides of the two air outlet pipes 11 are fixedly connected to air outlets 12.

[0035] S1: The user pulls the coating with the slurry on the surface off the soft pad 707, and then moves the coating to one side with the roller 106 and the limit wheel 107. After the coating comes out of the coating equipment, the surface coating has not solidified. When the thick edge effect occurs, the weight in the middle is smaller and the weight on both sides is larger. When the thick edge is formed, the coating will squeeze the sleeve 702 downward on both sides due to the change in its weight when passing through the soft pad 707. When the sleeve 702 is subjected to force, the repulsive space formed by the two magnets 713 will be compressed. When the two magnets 713 are compressed to touch the controller 709 in the middle position, the two hydraulic rods 70 will be activated. 5 shrinks inward, the hydraulic rod 705 will drive the two rotating plates 711 to rotate upward with the rotating connection with the fixed plate 710 as the center, so that the fixed plate 710 cooperates with the two rotating plates 711 to form a " / ˉ\" shape, and the slurry gathered on both sides will flow back to the middle. When the weight in the middle is too heavy, the middle sleeve 702 is compressed. After the controller 709 is started, it will control the hydraulic rod 705 to extend outward, and the fixed plate 710 cooperates with the two rotating plates 711 to form a reverse "\_ / " shape, so that the slurry can flow to both sides, so as to avoid the thick edge effect on the coating and make the coating surface more uniform;

[0036] S2: After the coating passes through the soft pad 707, the refrigerator 10 is started, and the refrigerator 10 outputs cold air to the air hood 9, and the cold air passes through the air outlet 11 and finally reaches the air outlet 12. Since the cold air moves downward, the cold air flow will flow downward from the air outlet 12, and the coating that contacts the cold air will solidify faster, avoiding the thick edge effect after balancing. When the user needs to adjust the overall moving height of the coating in the later stage, it can be adjusted through the cooperation between the bottom plate 8 and the clamping ring 3. When adjusting, it only needs to loosen and tighten the fixing screw to control the clamping ring 3 to slide up and down along the bracket 4;

[0037] S3: After the coating passes through the control structure 7 and the air outlet 12, it will pass through the roller 106 and the limiting wheel 107. The limiting wheel 107 cooperates with the roller 106 to ensure the normal passage of the subsequent coating. The limiting wheel 107 allows the coating to maintain an accurate position so that it moves from the center position of the cushion 707 to avoid sensing errors. The limiting wheel 107 can be adjusted according to coatings of different sizes. When adjusting, you only need to rotate the handle. The handle drives the opposing screws in the shell 111 to rotate, and the opposing screws drive the movable rod 108 to move oppositely or in opposite directions so that the coating is always in the center position of the equipment to ensure the accuracy of the sensing of the sleeve 702 under the cushion 707. The spring plate 109 is fine-tuned by rotating the knob 102 to align the position. The knob 102 drives the pressure plate 105 to move downward through the threaded rod 103 to apply a pressure to the spring plate 109. There are several pressure plates 105, and the height and left and right inclination of the spring plate 109 can be freely controlled according to actual use needs.

[0038] The working principle and use process of the present invention are as follows: the user pulls the coating with slurry on the surface off the soft pad 707, and then cooperates with the roller 106 and the limit wheel 107 to move the coating to one side. After the coating comes out of the coating equipment, the surface coating has not solidified. When the thick edge effect occurs, it will cause the weight in the middle to be smaller and the weight on both sides to be larger. When the thick edge is formed, the soft pad 707 passed by the coating will cause the sleeve 702 on both sides to be squeezed downward due to the change in its weight. When the sleeve 702 is subjected to force, the repulsive space formed by the two magnets 713 will be compressed. When the two magnets 713 are compressed to touch the controller 709 in the middle position, the two hydraulic rods 705 will be activated to contract inward, and the hydraulic rods 705 will drive The two rotating plates 711 rotate upward with the rotating connection with the fixed plate 710 as the center, so that the fixed plate 710 cooperates with the two rotating plates 711 to form a V-shape, and the slurry gathered on both sides will flow back to the middle. If there is too much slurry in the middle and the weight in the middle position is too heavy, the middle sleeve 702 will be pressed to start the controller 709 and then extend outward through the control of the hydraulic rod 705. The fixed plate 710 cooperates with the two rotating plates 711 to form a reverse V-shape, so that the slurry can flow to both sides, thus avoiding the thick edge effect on the coating and making the coating on the coating surface more uniform. After the coating passes through the soft pad 707, the refrigerator 10 can be started, and the refrigerator 10 will output the cold machine to the wind hood 9 , the wind hood 9 will eventually reach the air outlet 12 through the air outlet pipe 11. Since the cold air will move downward, the cold air flow will flow downward from the air outlet 12. The coating that contacts the cold air will accelerate solidification, avoiding the secondary thick edge effect after balancing. When the user needs to adjust the overall moving height of the subsequent coating, it can be adjusted through the cooperation between the bottom plate 8 and the clamping ring 3. When adjusting, it is only necessary to loosen and tighten the fixing screws to control the clamping ring 3 to slide up and down along the bracket 4. When the coating passes through the control structure 7 and the air outlet 12, it will pass through the roller 106 and the limiting wheel 107. The limiting wheel 107 cooperates with the roller 106 to ensure the normal passage of the subsequent coating. The limiting wheel 107 can keep the coating in an accurate position so that it must be removed from the cushion 707. The limit wheel 107 can be adjusted according to different sizes of coatings by rotating the handle, which drives the opposing screws in the shell 111 to rotate, and the opposing screws drive the movable rod 108 to move oppositely or in opposite directions so that the coating is always in the center of the device to ensure the accuracy of the sensing of the sleeve 702 under the cushion 707. The spring plate 109 can also be fine-tuned by rotating the knob 102 to align the position. The knob 102 can drive the pressure plate 105 to move downward through the threaded rod 103 to apply a pressure to the spring plate 109. There are several pressure plates 105, which can be freely controlled according to actual needs. The height and left and right tilt of the spring plate 109 are controlled.

[0039] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A device for preventing lateral leakage of lithium battery coating slurry, comprising a bracket (4), characterized in that: The support (4) is provided with a control rod (2) at the top, a connecting rod (5) is provided at one side of the top of the control rod (2), a connecting block (6) is provided at the bottom of the connecting rod (5), a control structure (7) is provided at the bottom of the connecting block (6), a bottom plate (8) is provided inside the support (4), a limiting structure (1) is provided at the top of the bottom plate (8), a plurality of clamping rings (3) are provided around the bottom plate (8), the clamping rings (3) are matched with the support (4), a fixing screw is passed through one side of the clamping ring (3), the control structure (7) comprises a docking plate (704), a docking plate (701) is provided at the front and rear sides of the bottom of the docking plate (704), a telescopic plate (703) is provided at the bottom of the docking plate (701), a hydraulic rod (705) is provided at one side of the telescopic plate (703), the hydraulic rod (705) controls the telescopic plate (703) to extend or contract, and an auxiliary wheel (706) is provided on one side of the inner wall of the telescopic plate (703) for rotation. A fixed plate (710) is provided between opposite sides of the two telescopic plates (703); a telescopic rod is provided at the bottom of the fixed plate (710); the bottom of the telescopic rod is fixedly connected to the top of the bottom plate (8); rotating plates (711) are rotatably provided on both sides of the fixed plate (710); a torque spring is provided at the rotational connection between the rotating plate (711) and the fixed plate (710); and trapezoidal blocks (708) are provided at the tops of the fixed plate (710) and the rotating plate (711). The tops of the fixed plate (710) and the rotating plate (711) are both provided with a push rod (712), the top of the push rod (712) is sleeved with a sleeve (702), the top of the inner wall of the sleeve (702) and the top of the push rod (712) are both provided with a magnet (713), the top of one side of the inner wall of the sleeve (702) is provided with a controller (709), the controller (709) is triggered by contact with the magnet (713), and the top of the sleeve (702) is provided with a soft cushion (707).

2. The device for preventing side leakage of lithium battery coating slurry according to claim 1, characterized in that: The limiting structure (1) comprises a spring plate (109), a plurality of springs (110) are provided at the bottom of the spring plate (109) in a rectangular array, the bottom of the spring (110) is fixedly connected to the top of the bottom plate (8), a shell (111) is provided at the top of the spring plate (109), opposing screw rods are provided inside the shell (111), and a handle is provided at the back of the shell (111).

3. The device for preventing side leakage of lithium battery coating slurry according to claim 2, characterized in that: Both sides of the shell (111) are slidably provided with movable rods (108), the movable rods (108) are adapted to the opposite screw rods, the top of the movable rod (108) is provided with a plurality of limit wheels (107) in a straight line shape, both sides of the top of the spring plate (109) are provided with a plurality of rollers (106), and both sides of the front and back of the bottom plate (8) are fixedly provided with a shell (101).

4. The device for preventing side leakage of lithium battery coating slurry according to claim 3, characterized in that: A threaded rod (103) is provided at the bottom of the inner wall of the shell (101), the top of the threaded rod (103) passes through the shell (101) and extends to the outside of the shell (101), a knob (102) is provided at the top of the threaded rod (103), a pressure rod (104) is movably provided on the threaded rod (103), and a pressure plate (105) is provided at the bottom of the pressure rod (104).

5. The device for preventing side leakage of lithium battery coating slurry according to claim 4, characterized in that: A refrigerator (10) is provided at the bottom of the base plate (8), and a wind cover (9) is provided on one side of the bottom of the base plate (8). The wind cover (9) is fixedly connected to the refrigerator (10) via a connecting pipe, and the front and back sides of the wind cover (9) are fixedly connected to air outlet pipes (11), and opposite sides of the two air outlet pipes (11) are fixedly connected to air outlets (12).

6. A method for using the device for preventing side leakage of lithium battery coating slurry according to claim 5, characterized in that: The operation process steps are as follows: S1: The user pulls the coating with the slurry on the surface out of the soft pad (707), and then moves the coating to one side with the roller (106) and the limit wheel (107). After the coating comes out of the coating device, the surface coating has not solidified. When the thick edge effect occurs, it will cause the weight in the middle to be smaller and the weight on both sides to be larger. When the thick edge is formed, the coating will press the sleeve (702) downward on both sides due to the change in its weight when passing through the soft pad (707). When the sleeve (702) is subjected to force, it will compress the repulsive space formed by the two magnets (713). When the two magnets (713) are compressed to the point where they touch the controller (709) in the middle, the two hydraulic rods (709) will be activated. 5) When the hydraulic rod (705) contracts inward, the two rotating plates (711) are driven to rotate upward with the rotating connection with the fixed plate (710) as the center, so that the fixed plate (710) cooperates with the two rotating plates (711) to form a "\_ / " shape, and the slurry gathered on both sides will flow back to the middle. When the weight in the middle is too heavy, the middle sleeve (702) is compressed, and the controller (709) controls the hydraulic rod (705) to extend outward after being started, and the fixed plate (710) cooperates with the two rotating plates (711) to form a reverse "\_ / " shape, so that the slurry flows to both sides, thereby avoiding the thick edge effect on the coating and making the coating surface more uniform; S2: After the coating passes through the soft pad (707), the refrigerator (10) is started. The refrigerator (10) outputs cold air into the hood (9). The cold air passes through the air outlet pipe (11) and finally reaches the air outlet (12). Since the cold air moves downward, the cold air will flow downward from the air outlet (12). The coating that comes into contact with the cold air will solidify faster, thus avoiding the thick edge effect after balancing. When the user needs to adjust the overall moving height of the coating at a later stage, the adjustment can be made through the cooperation between the bottom plate (8) and the clamping ring (3). When adjusting, it is only necessary to loosen or tighten the fixing screw to control the clamping ring (3) to slide up and down along the bracket (4); S3: After the coating passes through the control structure (7) and the air outlet (12), it will pass through the roller (106) and the limit wheel (107). The limit wheel (107) cooperates with the roller (106) to ensure the normal passage of the subsequent coating. The limit wheel (107) allows the coating to maintain an accurate position so that it moves from the center position of the soft pad (707) to avoid sensing errors. The limit wheel (107) can be adjusted according to different sizes of coatings. When adjusting, it only needs to rotate the handle, and the handle drives the opposite screw rod in the housing (111) to rotate, and the opposite screw rod drives The movable rod (108) moves in opposite or opposite directions so that the coating is always in the center of the device to ensure the accuracy of the sensing of the sleeve (702) under the soft pad (707). The spring plate (109) is fine-tuned by rotating the knob (102) to align the position. The knob (102) drives the pressure plate (105) to move downward through the threaded rod (103) to apply pressure to the spring plate (109). There are several pressure plates (105), and the height and left and right inclination of the spring plate (109) can be freely controlled according to actual use needs.

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