Uniform coating machine for lithium battery cell production

Abstract

The invention discloses a uniform coating machine for lithium battery cell production, and relates to the technical field of lithium battery production, the uniform coating machine comprises a coating machine, an oxide layer removing mechanism and a coating material stability maintaining mechanism, the oxide layer removing mechanism is arranged on one side of a transfer roller, and the coating material stability maintaining mechanism is arranged below a coating roller; through the arrangement of the arc-shaped track, the stirring work of the stirring column can be carried out in multiple directions in the loading cavity, not only is the coating material stirred in the horizontal direction, but also through the arrangement of the arc-shaped track, the stirring range in the loading cavity is enlarged, and internal slurry is driven to turn over up and down and left and right, so that comprehensive mixing is realized; according to the coating material mixing device, multiple raw materials with different specific gravities and particle sizes in a coating material can be more fully mixed and contacted, the stability of the coating material is improved, and the situation that the subsequent coating efficiency is affected due to layering or disproportionality caused by the fact that part of the coating material cannot be mixed is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery production, in particular to a uniform coating machine for lithium battery cell production. Background Art

[0002] The manufacturing process of battery pole pieces includes five procedures: slurry preparation, slurry coating, pole piece rolling, pole piece slitting, and pole piece drying. Among them, slurry coating is usually completed using a coating machine. The main purpose of coating is to evenly coat the slurry with good stability, good viscosity, and good fluidity on the surface of the positive and negative electrodes. Its importance to lithium batteries is mainly reflected in consistency, cycle life, and safety. During the coating process, if the thickness of the positive and negative electrode slurry coating at the front, middle, and back of the pole piece is inconsistent, or the parameters before and after the pole piece are inconsistent, it is easy to cause the battery capacity to be too low or too high, and lithium precipitation may occur during the battery cycle, affecting the battery life.

[0003] In the prior art, when a coating machine is used to coat lithium battery cells, the coating process has some defects. Among them, in the process of roller transfer coating, since this method has high requirements on the stability of the slurry, the problems often occurring in the coating process include contamination of the raw material substrate and unstable coating process, such as sedimentation or viscosity change of the coating slurry used for coating. Therefore, according to the requirements of the roller transfer coating process, it is necessary to adjust the viscosity of the slurry to meet the feeding requirements of the coating machine to ensure that it has good fluidity and uniformity during the coating process. If the coating process is unstable, the slurry will sediment or change in viscosity during the coating work. If the viscosity is too high, the coating will be too thick; if the viscosity is too low, the coating will be too thin or uneven, which will directly affect the uniformity and covering effect of the coating. The non-uniform viscosity will lead to uneven drying, which will further affect the drying time and quality of the coating. At the same time, uneven coating or substandard quality will lead to more waste products, increase production costs, and the settled slurry cannot be reused, resulting in waste of raw materials.

[0004] Therefore, a uniform coating machine for lithium battery cell production is proposed to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a uniform coating machine for lithium battery cell production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a uniform coating machine for lithium battery cell production, comprising: a coating machine, wherein two brackets are fixedly connected inside the coating machine, a coating roller is rotatably connected to the upper end of the bracket, a transfer roller is arranged above the coating roller, the transfer roller is rotatably connected to the bracket, both ends of the coating machine are rotatably connected to guide rollers, both sides of the bracket are provided with positioning frames, the positioning frames are fixedly connected inside the coating machine, the coating roller, the transfer roller, and the guide roller are all slidably connected to the lithium battery coating substrate, and also comprising: an oxide layer removal mechanism and a coating material stabilizing mechanism, the oxide layer removal mechanism is arranged on one side of the transfer roller, and the coating material stabilizing mechanism is arranged below the coating roller;

[0007] The oxide layer cleaning mechanism is used to clean the oxide layer and impurities on the lithium battery coating substrate;

[0008] The coating material stabilizing mechanism is used to stir the coating material to prevent the coating material from settling or changing in viscosity.

[0009] Preferably, the oxide layer removal mechanism includes an auxiliary cavity, connecting rods are provided at both ends of the auxiliary cavity, the auxiliary cavity is fixedly connected to two positioning frames through the connecting rods at both ends, a through opening is opened on the side of the auxiliary cavity close to the transfer roller, an air suction fan is fixedly connected to the middle of the inner cavity of the auxiliary cavity, the air suction fan and the inner cavity of the auxiliary cavity away from the transfer roller form a storage cavity, two positioning rings are fixedly connected in the inner cavity of the auxiliary cavity close to the transfer roller, a spiral brush is rotatably connected in the positioning ring, and the spiral brush is rotatably connected in the auxiliary cavity.

[0010] Preferably, the coating material stabilizing mechanism includes a loading cavity, the loading cavity is fixedly connected to the lower end of the positioning frame, an opening is opened on the loading cavity, the coating roller is rotatably connected in the opening opened on the loading cavity, arc tracks are opened on both sides of the inner cavity of the loading cavity, auxiliary plates are fixedly connected at both ends of the inner cavity of the loading cavity, a movable groove is opened in the middle of the auxiliary plate, and the movable groove is in a parallel position with the arc track.

[0011] Preferably, the coating material stabilizing mechanism also includes two column cavities, the two column cavities are slidably connected in two arc tracks respectively, the end of the column cavity away from the loading cavity is fixedly connected to a U-shaped frame, the middle of the U-shaped frame passes through a sliding column for sliding connection, the end of the U-shaped frame away from the column cavity is fixedly connected to an electric telescopic rod, the end of the electric telescopic rod away from the U-shaped frame is fixedly connected to the sliding column, the end of the sliding column close to the column cavity is fixedly connected to extension rods on both sides, the end of the extension rod away from the sliding column is rotatably connected to a cross, the sliding column is rotatably connected to a rotating column inside, and the rotating column is close to An eccentric block is fixedly connected to the eccentric part of one end of the column cavity, a V-shaped rod is rotatably connected inside the eccentric block, curved rings are fixedly connected at both ends of the V-shaped rod away from the eccentric block, the curved rings are slidably connected in the column cavity, a cross is rotatably connected inside the connection between the curved ring and the V-shaped rod, the end of the extension rod away from the sliding column is rotatably connected to the cross, the end of the rotating column away from the column cavity is fixedly connected to a stirring column, two stirring columns are symmetrically arranged with the loading cavity as the central axis, the stirring columns are slidably connected to a sealing strip arranged in the movable groove, and an auxiliary tube is provided on the outer ring of the close end of the two stirring columns.

[0012] Preferably, the spiral brush is arranged at one end of the auxiliary cavity close to the through opening, and the spiral brush is electrically connected to an external driving motor.

[0013] Preferably, the loading cavity is loaded with coating material, and the movable groove is provided with a rubber sealing strip.

[0014] Preferably, the electric telescopic rod is electrically connected to an external controller, the auxiliary tube has a built-in bidirectional motor electrically connected to two stirring columns respectively, and a plurality of silicone scrapers are fixedly connected to the outer ring of the stirring column.

[0015] Compared with the prior art, the present invention provides a uniform coating machine for lithium battery cell production, which has the following beneficial effects:

[0016] 1. Through the setting of the oxide layer removal mechanism, the coated substrate is cleaned and brushed to prevent impurities such as dust and oil on the surface of the substrate from seriously affecting the adhesion of the coating. Through cleaning and brushing, impurities are effectively removed so that the coating material can better adhere to the substrate, and the presence of impurities and oxide layers is prevented from increasing the internal resistance of the battery, thereby affecting the discharge efficiency and power output of the lithium battery processed later. During the cleaning and brushing work, the internal resistance of the battery is reduced while improving the overall new function of the battery. Furthermore, through the brush set on the outer circle thread of the spiral brush and the suction of the positioning ring, the impurities after cleaning and brushing are adsorbed and collected, which better prevents the impurities from flying to other parts during the cleaning and brushing work, and causing a bad influence on the coating work. The cleaning and brushing process can not only remove impurities, but also increase the roughness of the substrate surface to a certain extent, which helps to improve the mechanical anchoring effect between the coating and the substrate, thereby enhancing the adhesion.

[0017] 2. Through the setting of the coating material stabilizing mechanism, the coating material installed in the loading chamber is slowly stirred, and the inner wall of the loading chamber is scraped by the setting of the silicone scraper on the stirring column, so as to better avoid the coating material containing a variety of raw materials with different specific gravities and particle sizes. Under the action of gravity, the heavier particles settle to the bottom of the container, causing stratification. Through slow and continuous stirring, the uniformity of the coating material can be maintained. Further, it helps to maintain the stability of the viscosity of the coating material, which is conducive to the smooth development of the slurry during coating, forming a uniform coating, reducing particle agglomeration, ensuring that the components in the slurry are evenly dispersed, and better ensuring the consistency of the thickness of the subsequent coating work and the flatness of the substrate coating surface, ensuring the fluidity of the coating material during the coating process, and improving the coating effect and coating quality.

[0018] 3. Through the setting of the arc track, the stirring work of the stirring column can be carried out in multiple directions in the loading chamber. Not only can the coating material be stirred in the horizontal direction, but the setting of the arc track can also increase the stirring range in the loading chamber, driving the internal slurry to flip up and down and left and right, thereby achieving comprehensive mixing. It is helpful for the raw materials of various specific gravities and particle sizes in the coating material to be more fully mixed and contacted, thereby improving the stability of the coating material and avoiding stratification or imbalance caused by the inability to mix some coating materials, thereby affecting the subsequent coating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a structural diagram of the local oxide layer removal mechanism and the coating material stabilization mechanism of the present invention;

[0021] Figure 3 This is a cutaway internal structural diagram of the oxide layer removal mechanism of the present invention;

[0022] Figure 4 For the present invention Figure 3 The structure diagram at A is enlarged;

[0023] Figure 5 It is a structural diagram of the oxide layer removal mechanism of the present invention cut away from another angle;

[0024] Figure 6 This is an internal structural diagram of the oxide layer removal mechanism and the coating material stabilization mechanism of the present invention;

[0025] Figure 7 For the present invention Figure 6 The structure diagram at B is enlarged;

[0026] Figure 8 This is a cutaway internal structural diagram of the coating material stabilizing mechanism of the present invention.

[0027] In the figure:

[0028] 11. Coating machine; 12. Bracket; 13. Coating roller; 14. Transfer roller; 15. Guide roller; 16. Positioning frame;

[0029] 2. Oxide layer removal mechanism; 21. Auxiliary cavity; 22. Through port; 23. Air suction fan; 24. Storage cavity; 25. Positioning ring; 26. Spiral brush;

[0030] 3. Coating material stabilizing mechanism; 31. Loading chamber; 32. Arc track; 33. Auxiliary plate; 34. Movable groove; 35. Column chamber; 36. U-shaped frame; 37. Sliding column; 38. Electric telescopic rod; 39. Extension rod; 310. Rotating column; 311. Eccentric block; 312. V-shaped rod; 313. Cross; 314. Arc ring; 315. Stirring column; 316. Auxiliary pipe. DETAILED DESCRIPTION

[0031] 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.

[0032] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0033] Example

[0034] Please refer to Figures 1 to 5 As shown:

[0035] In order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a uniform coating machine for lithium battery cell production, including: a coating machine 11, two brackets 12 are fixedly connected in the coating machine 11, a coating roller 13 is rotatably connected to the upper end of the bracket 12, a transfer roller 14 is arranged above the coating roller 13, the transfer roller 14 is rotatably connected to the bracket 12, guide rollers 15 are rotatably connected to both ends of the coating machine 11, positioning frames 16 are arranged on both sides of the bracket 12, the positioning frames 16 are fixedly connected in the coating machine 11, and the coating roller 13, the transfer roller 14, and the guide roller 15 are all slidably connected to the lithium battery coating substrate, and also include: an oxide layer removal mechanism 2 and a coating material stabilizing mechanism 3, the oxide layer removal mechanism 2 is arranged on one side of the transfer roller 14, and the coating material stabilizing mechanism 3 is arranged below the coating roller 13;

[0036] The oxide layer removal mechanism 2 is used to clean the oxide layer and impurities on the lithium battery coated substrate. The oxide layer removal mechanism 2 includes an auxiliary cavity 21. Connecting rods are arranged at both ends of the auxiliary cavity 21. The auxiliary cavity 21 is fixedly connected to the two positioning frames 16 through the connecting rods at both ends. A through opening 22 is opened on the side of the auxiliary cavity 21 close to the transfer roller 14. An air suction fan 23 is fixedly connected to the middle of the inner cavity of the auxiliary cavity 21. The air suction fan 23 is mainly used to absorb impurities into the impurity storage cavity 24 when the spiral brush 26 cleans the substrate. The air suction fan 23 and the auxiliary cavity An impurity storage chamber 24 is formed in the inner cavity of the auxiliary cavity 21 away from the transfer roller 14. The impurity storage chamber 24 is mainly used to store adsorbed impurities. Two positioning rings 25 are fixedly connected in the inner cavity of the auxiliary cavity 21 close to the transfer roller 14. A spiral brush 26 is rotatably connected in the positioning ring 25. The spiral brush 26 is mainly used to better clean the oxide layer and impurities on the surface of the substrate in a spiral shape. The spiral brush 26 is arranged at one end of the auxiliary cavity 21 close to the through port 22. The spiral brush 26 is rotatably connected in the auxiliary cavity 21. The spiral brush 26 is electrically connected to an external drive motor.

[0037] For further examples, please refer to Figures 6 to 8 As shown:

[0038] The coating material stabilizing mechanism 3 is used to stir the coating material to prevent the coating material from settling or changing in viscosity. The coating material stabilizing mechanism 3 includes a loading cavity 31, in which the coating material is loaded. The loading cavity 31 is fixedly connected to the lower end of the positioning frame 16. An opening is provided on the loading cavity 31. The coating roller 13 is rotatably connected to the opening provided on the loading cavity 31. Arc tracks 32 are provided on both sides of the inner cavity of the loading cavity 31. The arc tracks 32 are mainly used to assist the control column cavity 35 to move in the loading cavity 31. Auxiliary plates 33 are fixedly connected at both ends of the inner cavity of the loading cavity 31. A movable groove 34 is provided in the middle of the auxiliary plate 33. The movable groove 34 is in parallel with the arc track 32. A rubber sealing strip is provided in the movable groove 34.

[0039] The coating material stabilizing mechanism 3 also includes two column cavities 35, which are slidably connected to the two arc tracks 32 respectively. The end of the column cavity 35 away from the loading cavity 31 is fixedly connected to a U-shaped frame 36, and a sliding column 37 is slidably connected to the middle of the U-shaped frame 36. The end of the U-shaped frame 36 away from the column cavity 35 is fixedly connected to an electric telescopic rod 38, and the electric telescopic rod 38 is electrically connected to an external controller. The end of the electric telescopic rod 38 away from the U-shaped frame 36 is fixedly connected to the sliding column 37. The electric telescopic rod 38 is mainly used to drive the sliding column 37 to reciprocate in the U-shaped frame 36 so as to change the stirring position of the stirring column 315 in the loading chamber 31. The sliding column 37 is fixedly connected to the extension rod 39 on both sides of the end close to the column chamber 35. The end of the extension rod 39 away from the sliding column 37 is rotatably connected to the cross 313. The sliding column 37 is rotatably connected to the rotating column 310. The rotating column 310 is fixedly connected to the eccentric part of the eccentric part of the end close to the column chamber 35. The eccentric block 311 is fixedly connected to the eccentric block 313. The arc surface ring 314 connected to the V-shaped rod 312 is mainly used to swing in the column cavity 35 by eccentrically rotating around the rotating column 310. The V-shaped rod 312 is rotatably connected in the eccentric block 311. The two ends of the V-shaped rod 312 away from the eccentric block 311 are fixedly connected to the arc surface ring 314. The arc surface ring 314 is slidably connected in the column cavity 35. The cross 313 is rotatably connected inside the connection between the arc surface ring 314 and the V-shaped rod 312. The end of the extension rod 39 away from the sliding column 37 is connected to the cross. 313 is rotatably connected, one end of the rotating column 310 away from the column cavity 35 is fixedly connected with a stirring column 315, two stirring columns 315 are symmetrically arranged with the loading cavity 31 as the central axis, a plurality of silicone scrapers are fixedly connected to the outer ring of the stirring column 315, the stirring column 315 is slidably connected to the sealing strip arranged in the movable groove 34, and an auxiliary tube 316 is sleeved on the outer ring of the end close to the two stirring columns 315, and the auxiliary tube 316 has a built-in bidirectional motor electrically connected to the two stirring columns 315 respectively;

[0040] Everything in the above example works like this:

[0041] In the initial state: the coating roller 13 and the transfer roller 14 are wound with uncoated lithium battery substrate, the suction fan 23 is not started, the spiral brush 26 is in conflict with the lithium battery substrate, the electric telescopic rod 38 is not started, the arc ring 314 is at the bottom of the column cavity 35, the column cavity 35 is in the middle of the arc track 32, and the bidirectional motor in the auxiliary tube 316 is not started.

[0042] The following is the working process of the oxide layer removal mechanism 2 for cleaning the oxide layer and impurities on the lithium battery coating substrate:

[0043] When in use, the lithium battery substrate is transferred to the transfer roller 14 through the guide roller 15 and then attached to the coating roller 13 for coating. The side of the substrate not coated with the coating material contacts the spiral brush 26. When the coating machine 11 is started to coat, the built-in power supply for driving the spiral brush 26 is started by the external controller. The built-in power supply drives the spiral brush 26 to rotate clockwise. When the spiral brush 26 rotates clockwise, with the assistance of the positioning ring 25, a stable foundation is provided for the rotation of the spiral brush 26, and then the spiral brush 26 is spirally rotated. Under the action of the bristles arranged in a spiral shape, while the substrate is being conveyed, the spiral brush 26 contacts the coating surface of the substrate and cleans it, removing impurities and the oxide layer on the substrate. The impurities that fall off after cleaning enter the storage chamber 24 through the spirally arranged bristles and the through holes of the through opening 22. Then the suction fan 23 is started. Under the adsorption action of the suction fan 23, the impurities that enter the storage chamber 24 through the through opening 22 are adsorbed. Under this adsorption effect, the impurities attached to the substrate are collected and stored in the storage chamber 24 to avoid affecting the subsequent cleaning work of the substrate.

[0044] By setting the oxide layer removing mechanism 2, the coated substrate is cleaned and brushed to prevent impurities such as dust and oil on the surface of the substrate from seriously affecting the adhesion of the coating. By cleaning and brushing, impurities are effectively removed so that the coating material can better adhere to the substrate, and the presence of impurities and oxide layers is prevented from increasing the internal resistance of the battery, thereby affecting the discharge efficiency and power output of the subsequently processed lithium battery. During the cleaning and brushing work, the internal resistance of the battery is reduced, and the overall new function of the battery is improved. Furthermore, the impurities after cleaning are adsorbed and collected by the brush set on the outer circle of the spiral brush 26 and the suction of the positioning ring 25, so as to better prevent the impurities from flying to other parts during the cleaning and brushing work, and cause a bad influence on the coating work. The cleaning and brushing process can not only remove impurities, but also increase the roughness of the substrate surface to a certain extent, which helps to improve the mechanical anchoring effect between the coating and the substrate, thereby enhancing the adhesion.

[0045] Please refer to the above working process Figures 1 to 5 .

[0046] The following is the working process of the coating material stabilizing mechanism 3 for stirring the coating material to prevent the coating material from settling or changing in viscosity:

[0047] When in use, after the lithium battery coating substrate is cleaned, the substrate is transferred to the loading chamber 31 through contact with the coating roller 13 to carry out the coating of the coating material. When the coating work is in progress, the bidirectional motor in the auxiliary tube 316 is started to drive the stirring columns 315 at both ends to slowly rotate and stir in the coating material. The silicone scraper on the outer ring of the stirring column 315 synchronously scrapes the inner surface of the loading chamber 31 to prevent the deposition of materials in the coating material. Then, during the stirring, the electric telescopic rod 38 is started to extend. When the electric telescopic rod 38 is extended, the sliding column 37 fixedly connected to the extended end thereof is synchronously driven to move toward the auxiliary tube 316. Based on this movement, the sliding column 37 drives the rotating column 310 and the stirring column 315 connected to the rotating column 310 to move toward the auxiliary tube 316, so that under the movement of the sliding column 37, the extension rod The connection of 39 drives the cross 313 and the arc ring 314 to slide in the column cavity 35 and move toward the end away from the column cavity 35. When the built-in motor of the auxiliary tube 316 drives the stirring columns 315 at both ends to rotate clockwise respectively, the clockwise rotation of the stirring columns 315 drives the rotating column 310 to rotate clockwise synchronously, and then the eccentric block 311 fixedly connected to the eccentric part of the rotating column 310 rotates clockwise with the rotating column 310 as the axis. Under this rotation, the V-shaped rod 312 with one end connected to the rotating column 310 rotates synchronously with an offset rotation, thereby deflecting the cross 313 through the offset rotation of the V-shaped rod 312, and further, through the deflection of the cross 313, the arc ring 314 shakes synchronously in the column cavity 35, thereby assisting the column cavity 35 in the moving working stability in the arc track 32;

[0048] Furthermore, while the sliding column 37 and the stirring column 315 are driven to move in parallel in the loading chamber 31 to increase the stirring range by extending and contracting the electric telescopic rod 38, the column chamber 35 is synchronously moved in an arc direction in the loading chamber 31 with the assistance of the arc track 32, thereby expanding the moving range of stirring, so that the coating material states of various parts of the device in the loading chamber 31 can be more fully mixed, thereby improving the stability of the coating material. Compared with directly setting the stirring range, the implementation of this operation can adapt to different processing requirements according to the adjustment of the stirring position, thereby increasing the flexibility and applicability of the system, further avoiding the existence of mixing dead corners, ensuring comprehensive mixing, and thus better performing subsequent coating work;

[0049] By setting the coating material stabilizing mechanism 3, the coating material installed in the loading chamber 31 is slowly stirred, and the inner wall of the loading chamber 31 is scraped by the setting of the silicone scraper on the stirring column 315, so as to better avoid the coating material containing a variety of raw materials with different specific gravities and particle sizes. Under the action of gravity, the heavier particles settle to the bottom of the container and cause stratification. Through slow and continuous stirring, the uniformity of the coating material can be maintained. Further, it helps to maintain the stability of the viscosity of the coating material, which is conducive to the smooth development of the slurry during coating, forming a uniform coating, reducing particle agglomeration, ensuring that the components in the slurry are evenly dispersed, and better ensuring the consistency of the thickness of the subsequent coating work and the flatness of the substrate coating surface, ensuring the fluidity of the coating material during the coating process, and improving the coating effect and coating quality.

[0050] By setting the arc track 32, the stirring work of the stirring column 315 can be carried out in multiple directions in the loading chamber 31. Not only can the coating material be stirred in the horizontal direction, but the stirring range in the loading chamber 31 can be further increased by setting the arc track 32, driving the internal slurry to flip up and down and left and right, thereby achieving comprehensive mixing, which helps to more fully mix and contact various raw materials with different specific gravities and particle sizes in the coating material, improve the stability of the coating material, and avoid stratification or imbalance caused by the inability to mix some coating materials, thereby affecting the subsequent coating efficiency.

[0051] Please refer to the above working process Figures 6 to 8 .

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A uniform coating machine for lithium battery cell production, comprising: A coating machine (11), wherein two brackets (12) are fixedly connected inside the coating machine (11), a coating roller (13) is rotatably connected to the upper end of the bracket (12), a transfer roller (14) is arranged above the coating roller (13), the transfer roller (14) is rotatably connected to the bracket (12), both ends of the coating machine (11) are rotatably connected to guide rollers (15), both sides of the bracket (12) are provided with positioning frames (16), the positioning frames (16) are fixedly connected inside the coating machine (11), the coating roller (13), the transfer roller (14), and the guide roller (15) are slidably connected to the lithium battery coating substrate, characterized in that an oxide layer removing mechanism (2) is arranged on one side of the transfer roller (14), and a coating material stabilizing mechanism (3) is arranged below the coating roller (13); The oxide layer cleaning mechanism (2) is used to clean the oxide layer and impurities on the lithium battery coating substrate; The coating material stabilizing mechanism (3) is used to stir the coating material so as to prevent the coating material from settling or changing in viscosity.

2. A uniform coating machine for lithium battery cell production according to claim 1, characterized in that: The oxide layer removal mechanism (2) comprises an auxiliary cavity (21), connecting rods are arranged at both ends of the auxiliary cavity (21), and the auxiliary cavity (21) is fixedly connected to two positioning frames (16) through the connecting rods at both ends. A through opening (22) is opened on the side of the auxiliary cavity (21) close to the transfer roller (14), and an air suction fan (23) is fixedly connected to the middle of the inner cavity of the auxiliary cavity (21). The air suction fan (23) and the inner cavity of the auxiliary cavity (21) away from the transfer roller (14) form a storage cavity (24). Two positioning rings (25) are fixedly connected in the inner cavity of the auxiliary cavity (21) close to the transfer roller (14), and a spiral brush (26) is rotatably connected in the positioning ring (25), and the spiral brush (26) is rotatably connected in the auxiliary cavity (21).

3. A uniform coating machine for lithium battery cell production according to claim 1, characterized in that: The coating material stabilizing mechanism (3) comprises a loading cavity (31), the loading cavity (31) is fixedly connected to the lower end of the positioning frame (16), an opening is provided on the loading cavity (31), the coating roller (13) is rotatably connected in the opening provided on the loading cavity (31), arc tracks (32) are provided on both sides of the inner cavity of the loading cavity (31), auxiliary plates (33) are fixedly connected at both ends of the inner cavity of the loading cavity (31), a movable groove (34) is provided in the middle of the auxiliary plate (33), and the movable groove (34) is in a parallel position with the arc track (32).

4. A uniform coating machine for lithium battery cell production according to claim 3, characterized in that: The coating material stabilizing mechanism (3) also includes two column cavities (35), the two column cavities (35) are slidably connected in two arc-shaped tracks (32), one end of the column cavity (35) away from the loading cavity (31) is fixedly connected to a U-shaped frame (36), the middle of the U-shaped frame (36) is slidably connected to a sliding column (37), the end of the U-shaped frame (36) away from the column cavity (35) is fixedly connected to an electric telescopic rod (38), the end of the electric telescopic rod (38) away from the U-shaped frame (36) is fixedly connected to the sliding column (37), both sides of the end of the sliding column (37) close to the column cavity (35) are fixedly connected to extension rods (39), the end of the extension rod (39) away from the sliding column (37) is rotatably connected to a cross (313), the sliding column (37) is rotatably connected to a rotating column (310) inside, and the rotating column (310) is biased toward the end of the column cavity (35). An eccentric block (311) is fixedly connected at the center of the column, a V-shaped rod (312) is rotatably connected inside the eccentric block (311), and arcuate rings (314) are fixedly connected at both ends of the V-shaped rod (312) away from the eccentric block (311). The arcuate ring (314) is slidably connected in the column cavity (35), and a cross (313) is rotatably connected inside the connection between the arcuate ring (314) and the V-shaped rod (312). The extension rod (39) is away from the sliding One end of the column (37) is rotatably connected to the cross (313); one end of the rotating column (310) away from the column cavity (35) is fixedly connected to a stirring column (315); two stirring columns (315) are symmetrically arranged with the loading cavity (31) as the central axis; the stirring columns (315) are slidably connected to a sealing strip arranged in the movable groove (34); and an auxiliary tube (316) is sleeved on the outer ring of the end close to the two stirring columns (315).

5. A uniform coating machine for lithium battery cell production according to claim 2, characterized in that: The spiral brush (26) is arranged at one end of the auxiliary cavity (21) close to the through opening (22), and the spiral brush (26) is electrically connected to an external driving motor.

6. A uniform coating machine for lithium battery cell production according to claim 3, characterized in that: The loading cavity (31) is loaded with coating material, and the movable groove (34) is provided with a rubber sealing strip.

7. A uniform coating machine for lithium battery cell production according to claim 4, characterized in that: The electric telescopic rod (38) is electrically connected to an external controller, the auxiliary tube (316) is equipped with a bidirectional motor which is electrically connected to two stirring columns (315) respectively, and the outer ring of the stirring column (315) is fixedly connected to a plurality of silicone scrapers.

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