A lithium battery diaphragm coating defoaming device and defoaming method

Abstract

The present invention relates to the field of lithium battery diaphragm defoaming, and in particular to a lithium battery diaphragm coating defoaming device and a defoaming method. A lithium battery diaphragm coating defoaming device and a defoaming method, comprising a bracket, the bracket being fixedly connected to an outer shell, the outer shell being fixedly connected to a feed pipe, a suction and pressure pipe, and a discharge pipe, a first servo motor and a second servo motor being fixedly connected to the inner part of the outer shell, a separation component for separating coating clots and bubbles being provided at the inner bottom of the outer shell, a lifting component for lifting the lithium battery diaphragm coating being provided inside the outer shell, an extrusion component for squeezing bubbles and clots in the coating being provided inside the outer shell, and a cleaning component for cleaning the coating accumulation on the inner wall of the outer shell being provided on the lifting component. The inner shell is rotated to separate bubbles and clots through centrifugation, and the centrifugal force drives the friction block to decompose and quickly dissolve the clots through friction, while the bubble coating is lifted and defoamed after centrifugal counteraction and vacuum environment, thereby ensuring uniform coating of the lithium battery diaphragm.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery diaphragm defoaming, and in particular to a lithium battery diaphragm coating defoaming device and a defoaming method. Background Art

[0002] Lithium batteries are the most promising energy storage devices today, and lithium battery separators are the key internal structure in the lithium battery structure. The lithium battery separator separates the positive and negative poles of the lithium battery to prevent short circuits caused by contact between the two poles. The performance of the lithium battery separator will affect the interface structure, internal resistance and other properties of the lithium battery.

[0003] During the proportioning process and the coating transportation process, a large number of bubbles and clots formed by coating agglomeration will be generated. Existing devices mostly eliminate bubbles and clots through single structures such as stirring and centrifugation. The efficiency of eliminating bubbles and clots in lithium battery separator coatings is limited, and the effect of eliminating small clots is poor. The efficiency of single stirring and dissolution is limited, resulting in spherical blank areas in the subsequent lithium battery separator coating, which makes the lithium battery separator coating uneven, and increases the probability of short circuit between the positive and negative poles of the lithium battery. Summary of the Invention

[0004] In order to overcome the shortcomings of uneven coating of lithium battery diaphragm caused by a large number of bubbles contained in the coating and the clot phenomenon formed by the agglomeration of the coating, a lithium battery diaphragm coating defoaming device and defoaming method are provided to solve the above problems.

[0005] The technical solution is: a lithium battery diaphragm coating defoaming device, including a bracket, the bracket is fixedly connected to a shell, the upper end of the shell is fixedly connected to a feed pipe, the shell is fixedly connected to a suction and pressure pipe, the suction and pressure pipe is used to extract the gas in the shell, the upper end of the shell is fixedly connected to a discharge pipe, the shell is fixedly connected to a first servo motor, the shell is fixedly connected to a second servo motor, a separation component for separating paint clots and bubbles is provided at the bottom of the shell, the first servo motor and the separation component are connected by a gear ring transmission, a lifting component for lifting the lithium battery diaphragm coating is provided inside the shell, the lifting component includes a rotating shaft, the interior of the rotating shaft is a hollow structure and is connected to the discharge pipe, the rotating shaft is fixedly connected to the second servo motor output shaft, the rotating shaft is fixedly connected to an auger, the auger lifts the lithium battery diaphragm coating to eliminate the bubbles in the lithium battery diaphragm coating, an extrusion component for squeezing bubbles and clots in the coating is provided inside the shell, the separation component and the extrusion component cooperate to squeeze and tear bubbles and clots in the lithium battery diaphragm coating in the shell, and a cleaning component for cleaning the paint accumulation on the inner wall of the shell is provided on the lifting component.

[0006] As a further preferred solution, the separation component includes a rotating inner shell, which is rotatably connected to the inside of the outer shell, and is connected to the output shaft of the first servo motor through a gear ring transmission. A mesh knife is fixedly connected to the inner side of the rotating inner shell, and friction blocks are circumferentially arranged on the inner wall of the rotating inner shell.

[0007] As a further preferred solution, centrifugal strips are circumferentially provided on the inner bottom of the rotating inner shell for increasing the contact area with the lithium battery separator coating.

[0008] As a further preferred solution, the lifting assembly also includes a rotating shell, which is fixedly connected to the auger, a filter is fixedly connected to the lower end of the rotating shell, a drawing hole is provided on the rotating shaft, and a bulk material shell is fixedly connected to the upper end of the rotating shell. The bulk material shell has an hourglass structure, and a discharge hole is provided on the outer peripheral surface of the bulk material shell.

[0009] As a further preferred solution, the discharge holes in the upper and lower parts of the bulk material shell have the same deflection angles and opposite directions.

[0010] As a further preferred embodiment, the extrusion assembly includes a first extrusion plate, the first extrusion plate is fixedly connected to the outer shell, the rotating shell is fixedly connected to the second extrusion plate, the first extrusion plate and the second extrusion plate are both provided with extrusion ring teeth, and the extrusion ring teeth on the first extrusion plate and the second extrusion plate are staggered, the second extrusion plate is rotatably connected to the rotating drum, and a stirring support shaft is provided circumferentially of the rotating drum.

[0011] As a further preferred solution, the first extrusion plate and the second extrusion plate are both provided with staggered blocks between the extrusion ring teeth for deflecting and reversing the lithium battery diaphragm coating.

[0012] As a further preferred solution, the cleaning component includes a fixing frame, the fixing frame is fixedly connected to the rotating shaft, the fixing frame is fixedly connected to a scraper, and the scraper is a spirally bent structure that is close to the inner wall of the shell.

[0013] As a further preferred solution, guide blocks are evenly distributed on the scraper for guiding the accumulated coagulation of the coating to the second extrusion plate.

[0014] As a further preferred embodiment, a lithium battery separator coating defoaming method comprises the following steps:

[0015] S1: When the lithium battery diaphragm coating is defoamed, after the lithium battery diaphragm coating enters the outer shell from the feed pipe, the staff extracts the gas above the diaphragm coating in the outer shell through the pumping pipe to form a vacuum state, and then turns on the first servo motor and the second servo motor in different rotation directions. At this time, the output shaft of the second servo motor drives the auger and the rotating shell to rotate together, and the auger lifts the diaphragm coating upward. At the same time, the rotating shell drives the extrusion ring teeth staggered on the first extrusion plate and the second extrusion plate to interlace and cooperate to squeeze and tear bubbles and clots in the lithium battery diaphragm coating. At the same time, the staggered blocks between the extrusion ring teeth perform baffle reversing on the lithium battery diaphragm coating. The rotation of the second extrusion plate drives the stirring support shaft on the rotating drum to stir the lithium battery diaphragm coating.

[0016] S2: After the lithium battery diaphragm coating enters the rotating inner shell, the output shaft of the first servo motor rotates to drive the rotating inner shell to centrifugally rotate the lithium battery diaphragm coating. At the same time, the friction block on the inner wall of the rotating inner shell and the centrifugal strip on the inner bottom increase the contact surface with the lithium battery diaphragm coating. The lithium battery diaphragm coating without bubbles is gathered in the middle of the rotating inner shell by centrifugation, and the clots are gathered on the inner periphery of the rotating inner shell. When the clots in the lithium battery diaphragm coating move toward the inside of the rotating inner shell, the clots are cut again by the mesh knife. When the clots are centrifuged to contact the inner wall of the rotating inner shell, the friction blocks on the rotating inner shell rub and decompose the clots. At the same time, the lithium battery diaphragm coating quickly dissolves the clots through centrifugal force.

[0017] S3: When centrifugal separation is completed, the lithium battery diaphragm coating with a high bubble content is located in the middle of the rotating inner shell, and is lifted upward by the auger after passing through the filter. When the lithium battery diaphragm coating with a high bubble content is lifted to the bulk shell, it is squeezed and discharged along the discharge hole. The upper and lower discharge holes of the bulk shell have the same downward deflection angle and opposite directions. The lithium battery diaphragm coating with a high bubble content is discharged along the discharge hole to form a hedge to eliminate the internal bubbles. At the same time, due to the vacuum environment above the lithium battery diaphragm coating, the bubbles quickly rupture and discharge the lithium battery diaphragm coating. The lithium battery diaphragm coating after the hedge is centrifuged into the outer shell, and this cycle repeats continuously.

[0018] S4: The output shaft of the second servo motor rotates to drive the rotating shaft to rotate, and the rotation of the rotating shaft drives the fixed frame to rotate together. The rotation of the fixed frame drives the scraper to scrape the inner wall of the outer shell. The lithium battery diaphragm coating clots scraped by the scraper are guided by the guide block and fall onto the second extrusion plate and are squeezed and torn by the extrusion ring teeth. At the same time, the inner shell is rotated centrifugally to make the guided lithium battery diaphragm coating clots gather on the inner periphery of the rotating inner shell, and are completely dissolved after being cut by the mesh knife and decomposed by the friction block. When the bubbles and clots in the lithium battery diaphragm coating are completely eliminated, the first servo motor and the second servo motor are turned off, and then the lithium battery diaphragm coating is discharged through the discharge pipe along the extraction hole on the rotating shaft for lithium battery diaphragm coating.

[0019] The present invention has the following advantages: 1. The friction block on the rotating inner shell rubs and decomposes the clots, and at the same time, the rotating inner shell quickly dissolves the clots through centrifugal force, eliminating all the clots in the lithium battery diaphragm coating. The friction block on the inner wall of the rotating inner shell and the centrifugal strips on the inner bottom increase the contact area with the lithium battery diaphragm coating, thereby enhancing the centrifugal effect.

[0020] 2. The auger lifts the lithium battery diaphragm coating and discharges it through the discharge hole on the bulk shell and produces a counterattack, so that the bubbles in the lithium battery diaphragm coating are discharged, and the outer shell is a vacuum environment to accelerate the discharge efficiency of the bubbles.

[0021] 3. The first extrusion plate and the second extrusion plate cooperate to squeeze and tear the bubbles and clots in the lithium battery diaphragm coating, which is convenient for the discharge of bubbles and the dissolution of clots. At the same time, the stirring support shaft stirs the lithium battery diaphragm coating to further discharge the bubbles in the lithium battery diaphragm coating and make the lithium battery diaphragm coating more evenly distributed, thereby preventing the clots squeezed and torn by the extrusion ring teeth from condensing into blocks again.

[0022] 4. The rotation of the fixed frame drives the scraper to scrape the inner wall of the shell to prevent the lithium battery separator paint clots attached to the inner wall of the shell. At the same time, the scraper is evenly provided with guide blocks that guide the flow to the second extrusion plate to enhance the effect of eliminating clots. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the separation component of the present invention.

[0026] Figure 4 It is a schematic diagram of the partial three-dimensional structure of the separation component of the present invention.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the lifting assembly of the present invention.

[0028] Figure 6 It is a schematic diagram of the partial three-dimensional structure of the lifting assembly of the present invention.

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the extrusion assembly of the present invention.

[0030] Figure 8 It is a schematic diagram of the partial three-dimensional structure of the extrusion assembly of the present invention.

[0031] Figure 9 It is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention.

[0032] Figure 10It is a schematic diagram of the three-dimensional structure of the guide block of the present invention.

[0033] Among them: 101- bracket, 102- shell, 103- feed pipe, 104- pumping and pressure pipe, 105- discharge pipe, 106- first servo motor, 107- second servo motor, 2- separation component, 201- rotating inner shell, 202- mesh knife, 203- friction block, 204- centrifugal bar, 3- lifting component, 301- rotating shaft, 302- auger, 303- rotating shell, 304- filter screen, 305- extraction hole, 306- bulk material shell, 307- discharge hole, 4- extrusion component, 401- first extrusion plate, 402- second extrusion plate, 403- extrusion ring gear, 404- rotating drum, 405- stirring support shaft, 406- staggered block, 5- cleaning component, 501- fixed frame, 502- scraper, 503- guide block. Implementation Method

[0034] The following further describes the technical solution with reference to specific embodiments. It should be noted that terms such as "up," "down," "left," and "right" used herein to indicate directions refer only to the positions of the structures depicted in the corresponding drawings. Component numbers, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connected" and "coupled" in this application, unless otherwise specified, include both direct and indirect connections (couplings). Example

[0035] A lithium battery diaphragm coating defoaming device, such as Figure 1 and Figure 2As shown, it includes a bracket 101, the bracket 101 is fixedly connected to the shell 102, the shell 102 is fixedly connected to the feeding pipe 103, the upper end of the shell 102 is fixedly connected to the pumping pipe 104, the pumping pipe 104 is used to extract the gas in the shell 102, so that the shell 102 is in a vacuum state, the air pressure inside and outside the bubbles is different, ensuring that the bubbles burst and are discharged quickly, thereby improving the defoaming efficiency, the upper end of the shell 102 is fixedly connected to the discharge pipe 105, the inside of the shell 102 is fixedly connected to the first servo motor 106, the inside of the shell 102 is fixedly connected to the second servo motor 107, the bottom of the shell 102 is rotatably connected to a separation component 2 for separating paint clots and bubbles, the separation component 2 uses centrifugal force to gather the clots and the paint containing bubbles on the outside of the rotating inner shell 201 in the middle, and at the same time centrifugally dissolves the clots through friction, the first servo motor 1 06 is connected to the separation component 2 through a gear ring transmission, and the outer shell 102 is rotatably connected to a lifting component 3 for lifting the lithium battery diaphragm coating. The lifting component 3 includes a rotating shaft 301. The interior of the rotating shaft 301 is a hollow structure and is connected to the discharge pipe 105. The rotating shaft 301 is fixedly connected to the output shaft of the second servo motor 107. The rotating shaft 301 is fixedly connected to a screw dragon 302. The screw dragon 302 lifts the lithium battery diaphragm coating to eliminate the bubbles in the lithium battery diaphragm coating and ensure that all bubbles and clots in the lithium battery diaphragm coating are discharged. The outer shell 102 is fixedly connected to an extrusion component 4 for squeezing bubbles and clots in the coating. The separation component 2 and the extrusion component 4 cooperate to squeeze and tear the bubbles and clots in the lithium battery diaphragm coating in the outer shell 102. The lifting component 3 is fixedly connected to a cleaning component 5 for cleaning the coating accumulation on the inner wall of the outer shell 102.

[0036] like Figure 3 and Figure 4 As shown, the separation component 2 includes a rotating inner shell 201, which is a cylindrical structure with an inverted frustum concave in the middle and an annular hollow outer side. The rotating inner shell 201 is rotatably connected to the inside of the outer shell 102, and the lower end of the rotating inner shell 201 is connected to the output shaft of the first servo motor 106 through a gear ring transmission. A mesh knife 202 is fixedly connected to the inner side of the rotating inner shell 201. The mesh knife 202 is an annular mesh structure with a blade facing inward, which is used to cut the clots that move centrifugally toward the inside of the rotating inner shell 201. A friction block 203 is fixedly connected to the inner wall of the rotating inner shell 201 in the circumferential direction. The friction block 203 is a rectangular parallelepiped structure, and adjacent friction blocks 203 are staggered to enhance the friction of the clot during centrifugation and accelerate the dissolution speed of the clot. Eight centrifugal bars 204 are circumferentially arranged on the inner bottom of the rotating inner shell 201 to increase the contact area with the lithium battery diaphragm coating. The rotating inner shell 201 separates and gathers bubbles and clots through centrifugal rotation force, and dissolves the clots through centrifugal friction.

[0037] like Figure 7 and Figure 8As shown, the extrusion assembly 4 includes four first extrusion plates 401 arranged circumferentially, the first extrusion plates 401 are fan-shaped structures, the first extrusion plates 401 are fixedly connected to the outer shell 102, the rotating shell 303 is fixedly connected to four second extrusion plates 402 arranged circumferentially, the first extrusion plates 401 and the second extrusion plates 402 are staggered in the vertical direction, the first extrusion plates 401 and the second extrusion plates 402 are fixedly connected with extrusion ring teeth 403, and the extrusion ring teeth 403 on the first extrusion plates 401 and the second extrusion plates 402 are staggered, and the second extrusion plates 402 The lower end is rotatably connected to a rotating drum 404, and a stirring support shaft 405 is circumferentially arranged on the rotating drum 404. The first extrusion plate 401 and the second extrusion plate 402 are fixedly connected with a staggered block 406 for deflecting and reversing the lithium battery diaphragm coating between the extrusion ring teeth 403. The staggered block 406 has a structure with an inclined surface. The coating is diverted and colliding through the inclined surface to improve the discharge efficiency of bubbles. The rotation of the second extrusion plate 402 drives the extrusion ring teeth 403 to move relative to the extrusion ring teeth 403 on the first extrusion plate 401, thereby eliminating bubbles and clots in the lithium battery diaphragm coating.

[0038] When the lithium battery diaphragm coating is defoamed, the diaphragm coating enters the shell 102 through the feed pipe 103. When the diaphragm coating is injected, the staff extracts the gas above the diaphragm coating in the shell 102 through the pressure extraction pipe 104, so that the diaphragm coating in the shell 102 is in a vacuum state. Then the first servo motor 106 and the second servo motor 107 are turned on, and the output shaft of the second servo motor 107 rotates in opposite directions to the output shaft of the first servo motor 106. At this time, the output shaft of the second servo motor 107 rotates to drive the rotating shaft 301 to rotate, and the rotation of the rotating shaft 301 drives the auger 302 and the rotating shell 303 to rotate together. At this time, the auger 302 drives the lower diaphragm coating to lift upward, and at the same time, the rotating shell 303 drives the second extrusion plate 402 to rotate synchronously, and the second extrusion plate 402 rotates to stir the lithium battery diaphragm coating. To defoam, the second extrusion plate 402 rotates and intersects with the first extrusion plate 401. The extrusion ring teeth 403 staggered on the second extrusion plate 402 and the first extrusion plate 401 squeeze and tear the bubbles and clots in the lithium battery diaphragm coating to reduce the bubbles and clots in the lithium battery diaphragm coating. At the same time, the staggered blocks 406 between the extrusion ring teeth 403 baffle and reverse the lithium battery diaphragm coating. The lithium battery diaphragm coating is further discharged by continuously colliding and reversing the staggered blocks 406. At the same time, the second extrusion plate 402 rotates to drive the stirring support shaft 405 on the rotating drum 404 to stir the lithium battery diaphragm coating, so that the bubbles in the lithium battery diaphragm coating are further discharged, and the lithium battery diaphragm coating is more evenly distributed and the clots squeezed and torn by the extrusion ring teeth 403 are prevented from condensing into blocks again.

[0039] At the same time, the output shaft of the first servo motor 106 rotates to drive the rotating inner shell 201 to rotate. At this time, the lithium battery diaphragm coating squeezed and torn by the first extrusion plate 401 and the second extrusion plate 402 enters the rotating inner shell 201. Since the output shafts of the first servo motor 106 and the second servo motor 107 rotate in opposite directions, the lithium battery diaphragm coating changes in the direction of rotation when entering the rotating inner shell 201 for centrifugation. The change in the direction of rotation will cut the bubbles and clots in the lithium battery diaphragm coating again, making it easier to eliminate all the clots and bubbles in the lithium battery diaphragm coating. After the lithium battery diaphragm coating enters the rotating inner shell 201, the rotating inner shell 201 rotates to drive the lithium battery diaphragm coating to rotate centrifugally, and the rotating inner shell 201 The inner wall friction block 203 and the centrifugal strip 204 at the inner bottom increase the contact area with the lithium battery diaphragm coating, thereby enhancing the centrifugal effect. The bubble-free lithium battery diaphragm coating and the clot are centrifuged toward the inside of the rotating inner shell 201. When the clot in the lithium battery diaphragm coating moves toward the inside of the rotating inner shell 201, the clot is cut again by the mesh knife 202. When the clot is centrifuged to contact the inner wall of the rotating inner shell 201, the friction block 203 on the rotating inner shell 201 rubs and decomposes the clot. At the same time, the centrifugal force of the rotating inner shell 201 pushes the lithium battery diaphragm coating to quickly dissolve the clot, eliminating all the clots in the lithium battery diaphragm coating to prevent uneven coating of the lithium battery diaphragm. Example

[0040] On the basis of Example 1, Figure 5 and Figure 6 As shown, the lifting component 3 also includes a rotating shell 303, which is fixedly connected to the auger 302. The lower end of the rotating shell 303 is fixedly connected to a filter screen 304 for blocking clots. The rotating shaft 301 is circumferentially provided with a suction hole 305 for discharging materials. The upper end of the rotating shell 303 is fixedly connected to a bulk shell 306. The bulk shell 306 has an hourglass structure. The upper outer circumference of the hourglass structure of the bulk shell 306 is circumferentially provided with a downwardly deflected discharge hole 307, and the lower outer circumference of the hourglass structure of the bulk shell 306 is circumferentially provided with an upwardly deflected discharge hole 307. The deflection angles of the discharge holes 307 on the upper and lower parts of the bulk shell 306 are in the same direction and in opposite directions to form a counter-attack, so that the bubbles in the lithium battery diaphragm coating are discharged through collision.

[0041] like Figure 9 and Figure 10 As shown, the cleaning assembly 5 includes a fixed frame 501, which is fixedly connected to the rotating shaft 301. The fixed frame 501 is circumferentially fixedly connected with three scrapers 502. The scraper 502 is a bent structure with a diversion accumulated paint. The scraper 502 is evenly fixedly connected with a diversion block 503 for diverting the accumulated paint clots to the second extrusion plate 402. The scraper 502 scrapes the inner wall of the outer shell 102 to prevent the paint from accumulating on the inner wall of the outer shell 102 and forming clots.

[0042] The rotating inner shell 201 causes the lithium battery diaphragm coating with a high bubble content to gather in the middle of the rotating inner shell 201 through centrifugation, and is lifted upward by the auger 302 after passing through the filter 304. When the lithium battery diaphragm coating with a high bubble content is lifted into the bulk shell 306, the lithium battery diaphragm coating with a high bubble content is discharged along the discharge hole 307 through the rotation of the bulk shell 306 and the extrusion of the coating itself. Since the bulk shell 306 is in the shape of an hourglass, the discharge hole 307 at the upper part of the bulk shell 306 deflects downward, and the bulk shell 306 discharges the coating at the lower part. The hole 307 deflects upward, and the lithium battery diaphragm coating with a high bubble content is discharged along the discharge hole 307 to form a hedge to eliminate the internal bubbles. At the same time, since there is a vacuum environment above the lithium battery diaphragm coating, the bubbles are quickly burst after being discharged from the lithium battery diaphragm coating, thereby improving the defoaming efficiency of the lithium battery diaphragm coating. The lithium battery diaphragm coating after the hedge is centrifuged into the outer shell 102, and this cycle is repeated until the bubbles and clots in the high lithium battery diaphragm coating are eliminated, thereby preventing unevenness during lithium battery diaphragm coating.

[0043] The output shaft of the second servo motor 107 rotates to drive the rotating shaft 301 to rotate, and the rotating shaft 301 rotates to drive the fixed frame 501 to rotate together, and the fixed frame 501 rotates to drive the scraper 502 to scrape the inner wall of the shell 102 to prevent the lithium battery separator paint from clotted on the inner wall of the shell 102. The scraper 502 is a spiral bending structure that is close to the inner wall of the shell 102. At the same time, the scraper 502 is evenly fixedly connected to the guide block 503 that guides the second extrusion plate 402, so that the lithium battery separator paint scraped by the scraper 502 is not clotted. The material clot falls onto the second extrusion plate 402 and is squeezed and torn by the extrusion ring teeth 403. At the same time, the lithium battery diaphragm coating clot is guided into the rotating inner shell 201 for centrifugation, and is completely dissolved after being cut by the mesh knife 202 and frictionally decomposed by the friction block 203. When the bubbles and clots in the lithium battery diaphragm coating are completely eliminated, the first servo motor 106 and the second servo motor 107 are turned off, and then the lithium battery diaphragm coating is discharged through the discharge pipe 105 along the extraction hole 305 on the rotating shaft 301 for lithium battery diaphragm coating. Example

[0044] On the basis of Example 2, Figures 1-10 As shown, a lithium battery separator coating defoaming method comprises the following steps:

[0045] S1: When the lithium battery diaphragm coating is defoamed, after the lithium battery diaphragm coating enters the outer shell 102 from the feed pipe 103, the staff extracts the gas above the diaphragm coating in the outer shell 102 through the pressure extraction pipe 104 to form a vacuum state, and then turns on the first servo motor 106 and the second servo motor 107 in different rotation directions. At this time, the output shaft of the second servo motor 107 drives the auger 302 and the rotating shell 303 to rotate together, and the auger 302 lifts the diaphragm coating upward. At the same time, the rotating shell 303 drives the extrusion ring teeth 403 staggered on the first extrusion plate 401 and the second extrusion plate 402 to interlace and cooperate to squeeze and tear bubbles and clots in the lithium battery diaphragm coating. At the same time, the staggered blocks 406 between the extrusion ring teeth 403 perform deflection and reversing on the lithium battery diaphragm coating. The rotation of the second extrusion plate 402 drives the stirring support shaft 405 on the rotating drum 404 to stir the lithium battery diaphragm coating;

[0046] S2: After the lithium battery diaphragm coating enters the rotating inner shell 201, the output shaft of the first servo motor 106 rotates to drive the rotating inner shell 201 to centrifugally rotate the lithium battery diaphragm coating. At the same time, the friction block 203 on the inner wall of the rotating inner shell 201 and the centrifugal strip 204 on the inner bottom increase the contact surface with the lithium battery diaphragm coating. The lithium battery diaphragm coating without bubbles is gathered in the middle of the rotating inner shell 201 by centrifugation, and the clots are gathered on the inner periphery of the rotating inner shell 201. When the clots in the lithium battery diaphragm coating move toward the inside of the rotating inner shell 201, the clots are cut again by the mesh knife 202. When the clots are centrifuged to contact the inner wall of the rotating inner shell 201, the friction block 203 on the rotating inner shell 201 rubs and decomposes the clots. At the same time, the lithium battery diaphragm coating quickly dissolves the clots through centrifugal force.

[0047] S3: When centrifugal separation is completed, the lithium battery diaphragm coating with a high bubble content is located in the middle of the rotating inner shell 201, and is lifted upward by the auger 302 after passing through the filter screen 304. When the lithium battery diaphragm coating with a high bubble content is lifted to the bulk shell 306, the lithium battery diaphragm coating with a high bubble content is extruded and discharged along the discharge hole 307. The upper and lower discharge holes 307 of the bulk shell 306 have the same downward deflection angle and opposite directions. The lithium battery diaphragm coating with a high bubble content is discharged along the discharge hole 307 to form a hedge to eliminate the internal bubbles. At the same time, due to the vacuum environment above the lithium battery diaphragm coating, the bubbles quickly rupture and discharge the lithium battery diaphragm coating. The lithium battery diaphragm coating after the hedge is centrifuged into the outer shell 102, and this cycle is repeated continuously.

[0048] S4: The output shaft of the second servo motor 107 rotates to drive the rotating shaft 301 to rotate, and the rotation of the rotating shaft 301 drives the fixed frame 501 to rotate together. The rotation of the fixed frame 501 drives the scraper 502 to scrape the inner wall of the outer shell 102. The lithium battery diaphragm coating clots scraped by the scraper 502 are diverted by the guide block 503 and fall onto the second extrusion plate 402, and are squeezed and torn by the extrusion ring teeth 403. At the same time, the rotating inner shell 201 is centrifuged to make the diverted lithium battery diaphragm coating clots gather on the inner periphery of the rotating inner shell 201, and are completely dissolved after being cut by the mesh knife 202 and frictionally decomposed by the friction block 203. When the bubbles and clots in the lithium battery diaphragm coating are completely eliminated, the first servo motor 106 and the second servo motor 107 are turned off, and then the lithium battery diaphragm coating is discharged through the discharge pipe 105 along the extraction hole 305 on the rotating shaft 301 for lithium battery diaphragm coating.

[0049] Although the present disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A lithium battery diaphragm coating defoaming device, characterized by: The invention comprises a bracket (101), the bracket (101) is fixedly connected to a shell (102), the upper end of the shell (102) is fixedly connected to a feed pipe (103), the shell (102) is fixedly connected to a pumping pipe (104), the pumping pipe (104) is used to extract gas from the shell (102), the upper end of the shell (102) is fixedly connected to a discharge pipe (105), the inside of the shell (102) is fixedly connected to a first servo motor (106), the inside of the shell (102) is fixedly connected to a second servo motor (107), the bottom of the shell (102) is provided with a separation component (2) for separating paint clots and bubbles, the first servo motor (106) and the separation component (2) are connected through a gear ring transmission, and the inside of the shell (102) is provided with a lithium ion battery for lifting lithium ion battery. A lifting assembly (3) for a battery diaphragm coating, the lifting assembly (3) comprising a rotating shaft (301), the interior of the rotating shaft (301) being a hollow structure and being in communication with a discharge pipe (105), the rotating shaft (301) being fixedly connected to an output shaft of a second servo motor (107), the rotating shaft (301) being fixedly connected to an auger (302), the auger (302) lifting the lithium battery diaphragm coating to circulate and eliminate bubbles in the lithium battery diaphragm coating, an extrusion assembly (4) for squeezing bubbles and clots in the coating being provided inside the housing (102), the separation assembly (2) and the extrusion assembly (4) cooperating to squeeze and tear bubbles and clots in the lithium battery diaphragm coating in the housing (102), and a cleaning assembly (5) for cleaning the coating accumulated on the inner wall of the housing (102); The lifting assembly (3) further includes a rotating shell (303), the rotating shell (303) is fixedly connected to the auger (302), a filter screen (304) is fixedly connected to the lower end of the rotating shell (303), a material extraction hole (305) is provided on the rotating shaft (301), and a bulk material shell (306) is fixedly connected to the upper end of the rotating shell (303), the bulk material shell (306) is in an hourglass structure, and a discharge hole (307) is provided on the outer peripheral surface of the bulk material shell (306); The extrusion assembly (4) includes a first extrusion plate (401), the first extrusion plate (401) is fixedly connected to the outer shell (102), the rotating shell (303) is fixedly connected to the second extrusion plate (402), the first extrusion plate (401) and the second extrusion plate (402) are both provided with extrusion ring teeth (403), and the extrusion ring teeth (403) on the first extrusion plate (401) and the second extrusion plate (402) are staggered and matched, the second extrusion plate (402) is rotatably connected to the rotating drum (404), and the rotating drum (404) is circumferentially provided with a stirring support shaft (405); The separation component (2) includes a rotating inner shell (201), the rotating inner shell (201) is rotatably connected to the inside of the outer shell (102), the rotating inner shell (201) is connected to the output shaft of the first servo motor (106) through a gear ring transmission, a mesh knife (202) is fixedly connected to the inner side of the rotating inner shell (201), and a friction block (203) is circumferentially provided on the inner wall of the rotating inner shell (201).

2. A lithium battery separator coating and defoaming device according to claim 1, characterized in that: Centrifugal strips (204) are provided in the circumferential direction of the inner bottom of the rotating inner shell (201) for increasing the contact area with the lithium battery diaphragm coating.

3. A lithium battery separator coating and defoaming device according to claim 2, characterized in that: The discharge holes (307) at the upper and lower parts of the bulk material shell (306) have the same deflection angle and opposite directions.

4. A lithium battery separator coating and defoaming device according to claim 3, characterized in that: The first extrusion plate (401) and the second extrusion plate (402) are both provided with staggered blocks (406) for deflecting and reversing the lithium battery diaphragm coating between the extrusion ring teeth (403).

5. A lithium battery separator coating and defoaming device according to claim 4, characterized in that: The cleaning assembly (5) includes a fixing frame (501), the fixing frame (501) is fixedly connected to the rotating shaft (301), and the fixing frame (501) is fixedly connected to a scraper (502), and the scraper (502) is a spiral bending structure that is closely attached to the inner wall of the shell (102).

6. A lithium battery separator coating and defoaming device according to claim 5, characterized in that: The scraper (502) is evenly distributed with guide blocks (503) for guiding accumulated paint clots toward the second extrusion plate (402).

7. A lithium battery diaphragm coating defoaming method, using the lithium battery diaphragm coating defoaming device according to claim 6, characterized in that: The following steps are involved: S1: When the lithium battery diaphragm coating is defoamed, after the lithium battery diaphragm coating enters the housing (102) from the feed pipe (103), the staff extracts the gas above the diaphragm coating in the housing (102) through the pressure extraction pipe (104) to form a vacuum state, and then turns on the first servo motor (106) and the second servo motor (107) in different rotation directions. At this time, the output shaft of the second servo motor (107) drives the auger (302) and the rotating shell (303) to rotate together, and the auger (30 2) lifting the diaphragm coating upward, while the rotating shell (303) drives the extrusion ring teeth (403) staggeredly arranged on the first extrusion plate (401) and the second extrusion plate (402) to interlace and cooperate to squeeze and tear bubbles and clots in the lithium battery diaphragm coating, and at the same time, the staggered blocks (406) between the extrusion ring teeth (403) perform deflection and reversing on the lithium battery diaphragm coating, and the second extrusion plate (402) rotates to drive the stirring support shaft (405) on the rotating drum (404) to stir the lithium battery diaphragm coating; S2: After the lithium battery diaphragm coating enters the rotating inner shell (201), the output shaft of the first servo motor (106) rotates to drive the rotating inner shell (201) to centrifugally rotate the lithium battery diaphragm coating. At the same time, the friction block (203) on the inner wall of the rotating inner shell (201) and the centrifugal strip (204) on the inner bottom increase the contact surface with the lithium battery diaphragm coating. The lithium battery diaphragm coating without bubbles is gathered in the middle of the rotating inner shell (201) by centrifugation, and the clots are gathered on the inner periphery of the rotating inner shell (201). When the clots in the lithium battery diaphragm coating move toward the inside of the rotating inner shell (201), the clots are cut again by the mesh knife (202). When the clots are centrifuged to contact the inner wall of the rotating inner shell (201), the friction block (203) on the rotating inner shell (201) rubs and decomposes the clots. At the same time, the lithium battery diaphragm coating quickly dissolves the clots by centrifugal force. S3: When centrifugal separation is completed, the lithium battery diaphragm coating with a high bubble content is located in the middle of the rotating inner shell (201), and is lifted upward by the auger (302) after passing through the filter screen (304). When the lithium battery diaphragm coating with a high bubble content is lifted to the bulk shell (306), the lithium battery diaphragm coating with a high bubble content is extruded and discharged along the discharge hole (307). The upper and lower discharge holes (307) of the bulk shell (306) are deflected downward at the same angle and in opposite directions. The lithium battery diaphragm coating with a high bubble content is discharged along the discharge hole (307) to form a hedge to eliminate the internal bubbles. At the same time, since the lithium battery diaphragm coating is in a vacuum environment, the bubbles quickly rupture and discharge the lithium battery diaphragm coating. The lithium battery diaphragm coating after the hedge is centrifuged into the outer shell (102), and the cycle is repeated. S4: The output shaft of the second servo motor (107) rotates to drive the rotating shaft (301) to rotate, and the rotating shaft (301) rotates to drive the fixed frame (501) to rotate together. The fixed frame (501) rotates to drive the scraper (502) to scrape the inner wall of the shell (102). The lithium battery separator coating clots scraped by the scraper (502) are guided by the guide block (503) and fall onto the second extrusion plate (402) and are squeezed and torn by the extrusion ring teeth (403). At the same time, the inner shell (201) is rotated. ) centrifugation causes the guide lithium battery diaphragm coating clots to gather on the inner periphery of the rotating inner shell (201), and are completely dissolved after being cut by the mesh knife (202) and frictionally decomposed by the friction block (203). When the bubbles and clots in the lithium battery diaphragm coating are completely eliminated, the first servo motor (106) and the second servo motor (107) are turned off, and then the lithium battery diaphragm coating is discharged through the discharge pipe (105) along the extraction hole (305) on the rotating shaft (301) to coat the lithium battery diaphragm.

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