CN114146869A - Negative electrode slurry coating equipment based on lithium cell production - Google Patents
Negative electrode slurry coating equipment based on lithium cell production Download PDFInfo
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- CN114146869A CN114146869A CN202111511026.9A CN202111511026A CN114146869A CN 114146869 A CN114146869 A CN 114146869A CN 202111511026 A CN202111511026 A CN 202111511026A CN 114146869 A CN114146869 A CN 114146869A
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 25
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000007581 slurry coating method Methods 0.000 title claims abstract description 17
- 239000011267 electrode slurry Substances 0.000 title claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 101
- 239000011248 coating agent Substances 0.000 claims abstract description 94
- 238000001125 extrusion Methods 0.000 claims abstract description 83
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 29
- 238000003825 pressing Methods 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 7
- 239000006256 anode slurry Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 15
- 230000033001 locomotion Effects 0.000 abstract description 7
- 239000006257 cathode slurry Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 19
- 239000000758 substrate Substances 0.000 description 19
- 230000000712 assembly Effects 0.000 description 8
- 238000000429 assembly Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 206010066054 Dysmorphism Diseases 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000007765 extrusion coating Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 206010040007 Sense of oppression Diseases 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000004911 serous fluid Anatomy 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/10—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed before the application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/12—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being fed round the roller
-
- B08B1/20—
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0409—Methods of deposition of the material by a doctor blade method, slip-casting or roller coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Coating Apparatus (AREA)
Abstract
The invention discloses negative electrode slurry coating equipment based on lithium battery cell production, which comprises an extrusion die and a coating roller, and further comprises: a squeegee roller on which a plurality of squeegees are provided; the connecting rod assembly is arranged on the outer wall of the extrusion die, and the scraper roller is in transmission connection with the connecting rod assembly; the extrusion die is driven to move towards the coating roll, and the scraper roll is abutted against the outer wall of the coating roll through the connecting rod assembly, so that the scraper is attached to the outer wall of the coating roll and rotates. According to the cathode slurry coating equipment based on lithium battery cell production, when the extrusion die moves towards the coating roller under the driving of the equipment, the scraper roller can be attached to the outer wall of the coating roller, the connecting rod assembly enables the scraper on the outer wall of the scraper roller to be attached to the outer wall of the coating roller to rotate along with the gradual movement of the extrusion die, foreign matters attached to the outer wall of the base material on the coating roller are scraped, the scraper on the scraper roller is attached to the outer wall of the base material all the time in the coating process, and the attached impurities on the outer wall of the base material which moves continuously are scraped in the coating process.
Description
Technical Field
The invention relates to the technical field of electrode coating equipment, in particular to negative electrode slurry coating equipment based on lithium battery cell production.
Background
The lithium battery is a battery which uses lithium metal or lithium alloy as a positive/negative electrode material and uses a non-aqueous electrolyte solution, and the interior of the lithium battery is mainly formed by combining a plurality of battery cores. The lithium battery cell mainly comprises a positive electrode, a negative electrode, electrolyte and a diaphragm. The pole piece of the lithium battery cell is an important component of the cell, and in order to ensure that the pole piece can meet the use requirement of the cell, slurry coating is required to be carried out on a pole piece base material, and multilayer coating is sometimes carried out in order to improve the performance of the pole piece. Since the extrusion coating technology can obtain a coating with higher precision, the extrusion coating technology is widely applied to a plurality of fields of flexible electronics, functional films, flat panel displays, micro-nano manufacturing, printing and the like.
According to the patent number: CN106733415A, published as 2017-05-31, discloses a lithium battery pole piece coating machine, which comprises an unreeling mechanism, a coating mechanism, a drying mechanism and a reeling mechanism which are sequentially arranged, wherein the drying mechanism comprises an oven shell, the upper end and the lower end of the oven shell are respectively provided with a plurality of air inlets and air outlets which are parallel in the depth direction of the oven shell and are uniformly distributed, a plurality of nozzles for introducing hot air into the oven are arranged below the air inlets, a plurality of infrared tubes are arranged on a top plate of the oven shell, a plurality of contact rollers are arranged at the upper end and a plurality of suspension rollers are arranged at the lower end in the oven shell, the contact rollers and the suspension rollers are alternately arranged in the pole piece moving direction and comprise the unreeling mechanism, the coating mechanism, the drying mechanism and the reeling mechanism which are sequentially arranged, the drying mechanism comprises the oven shell, the upper end and the lower end of the oven shell are respectively provided with a plurality of air inlets and air outlets which are parallel and uniformly distributed in the depth direction of the oven shell, a plurality of nozzles for introducing hot air into the oven are arranged below the air inlets, a plurality of infrared tubes are arranged on a top plate of the oven shell, a plurality of contact rollers are arranged at the upper end of the interior of the oven shell, a plurality of suspension rollers are arranged at the lower end of the interior of the oven shell, and the contact rollers and the suspension rollers are arranged in a staggered mode in the pole piece moving direction. The main technical effects are as follows: the roller in the drying oven of the coating machine consists of a contact roller and a suspension roller, the reciprocating type belt walking of the pole piece is realized by the staggered arrangement of the contact roller and the suspension roller in the belt walking direction of the pole piece, and the length of the drying oven is greatly shortened; and two heating modes of infrared heating and hot air heating in the oven are simultaneously carried out, so that the heating efficiency is increased.
The existing extrusion coating needs to use an extrusion die to extrude slurry, however, in the coating production, the coating base material can adsorb impurities in the transportation or production process, the impurities are attached to the outer wall of the base material, and when the extrusion coating is carried out on the impurities attached to the base material, the impurities can shield the slurry from being attached to the base material.
Disclosure of Invention
The invention aims to provide negative electrode slurry coating equipment based on lithium battery cell production, and aims to solve the problems that impurities are attached to the outer wall of a base material, and the impurities can shield the slurry from being attached to the base material when the impurities attached to the base material are extruded and coated.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a negative pole thick liquids coating equipment based on lithium cell production, includes extrusion tooling and coating roll, still includes:
a squeegee roller on which a plurality of squeegees are provided;
the connecting rod assembly is arranged on the outer wall of the extrusion die, and the scraper roller is in transmission connection with the connecting rod assembly;
the extrusion die is driven to move towards the coating roll, and the scraper roll is abutted against the outer wall of the coating roll through the connecting rod assembly, so that the scraper is attached to the outer wall of the coating roll and rotates.
Preferably, the slurry discharging device further comprises a drainage plate, the drainage plate is arranged in the extrusion die, and the drainage plate is communicated with an output channel of the slurry discharging device, so that slurry flows along the outer wall of the drainage plate.
Preferably, the extrusion die further comprises a rotating baffle plate rotatably arranged on the extrusion die, and the rotating baffle plate is in transmission connection with the connecting rod assembly and drives the rotating baffle plate to rotate towards the inside of the extrusion die through the connecting rod assembly.
Preferably, the outer wall of the rotating baffle is provided with a flexible part, the drainage plate is provided with a wedge-shaped part, and the wedge-shaped part is abutted against the rotating baffle to enable the flexible part to be attached to the outer wall of the wedge-shaped part.
Preferably, the drainage plate is provided with a special-shaped drainage part on the outer wall, the drainage plate is provided with a flow distribution part, the flow distribution part is communicated with the special-shaped drainage part, and the flow distribution part enables the serous fluid to be distributed into the special-shaped drainage parts.
Preferably, the drainage plate is provided with a squeezing part, the squeezing part is connected with the flow dividing part and the special-shaped drainage part, and the squeezing part enables the serous fluid to converge and flow into the special-shaped drainage part.
Preferably, the connecting rod assembly further comprises a connecting assembly, the connecting assembly is connected with the rotating baffle, and when the connecting rod assembly keeps rotating, the connecting assembly drives the rotating baffle to keep rotating.
Preferably, the connecting rod assembly further comprises a limiting part, and the scraper roller is limited by the limiting part to rotate towards one side.
Preferably, the coating device further comprises a pressing unit, wherein the pressing unit is arranged between the scraper roller and the connecting rod assembly, and the scraper roller is attached to the outer wall of the coating roller through the pressing unit.
Preferably, the coating device further comprises a cover plate arranged on an extrusion die, wherein the extrusion die moves towards the coating roller, and the cover plate is positioned right above the coating roller.
In the technical scheme, the negative electrode slurry coating equipment based on lithium battery cell production provided by the invention has the following beneficial effects:
according to the invention, the scraper roll and the outer wall of the coating roll are kept at a certain distance through the connecting rod assembly, when an extrusion die moves towards the coating roll under the driving of equipment in use, the scraper roll can be attached to the outer wall of the coating roll firstly, and the connecting rod assembly enables the scraper on the outer wall of the scraper roll to be attached to the outer wall of the coating roll to rotate along with the gradual movement of the extrusion die, so that foreign matters attached to the outer wall of a substrate on the coating roll are scraped, the scraper on the scraper roll is always attached to the outer wall of the substrate in the coating process, and impurities attached to the outer wall of the substrate which moves continuously are scraped in the coating process.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a drainage plate structure according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a portion A according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an internal structure of an extrusion die provided in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a connecting rod assembly provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a connecting assembly according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a limiting portion according to an embodiment of the present invention.
Description of reference numerals:
1. extruding the mould; 11. a transfer seat; 12. a shaft coupling seat; 2. a squeegee roller; 3. a connecting rod assembly; 31. a limiting part; 32. a rotating arm; 33. a rotating plate; 34. mounting a plate; 35. a reset lever; 36. a butting rod; 4. a drainage plate; 41. a wedge portion; 42. a special-shaped drainage part; 43. a flow dividing section; 44. a pressing section; 45. a planar portion; 5. a connecting assembly; 51. a flexible portion; 52. a rod body; 53. a connecting seat; 6. a first rotating base; 7. a second rotating base; 8. rotating the baffle; 81. a flexible portion; 9. a cover plate.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 7, the apparatus for coating the negative electrode slurry based on the lithium battery cell production includes an extrusion die 1 and a coating roll, and further includes:
a squeegee roller 2 on which a plurality of squeegees are provided;
the connecting rod assembly 3 is arranged on the outer wall of the extrusion die 1, and the scraper roller 2 is in transmission connection with the connecting rod assembly 3;
the extrusion die 1 is driven to move towards the coating roll, and the scraper roll 2 is abutted against the outer wall of the coating roll through the connecting rod assembly 3, so that the scraper is attached to the outer wall of the coating roll to rotate.
The extrusion die 1 is communicated with the output end of the slurry coating equipment, so that slurry is ensured to be in the extrusion die 1. The coating roller is a roller body in the prior art and keeps rotating through a driver, the pole piece base material is spirally arranged on the outer wall of the coating roller, the slurry to be coated is extruded and coated on the outer wall of the pole piece substrate through an extrusion die 1, a scraper roller 2 comprises a shaft lever, a plurality of scrapers are fixedly welded on the outer wall of the shaft lever, the scrapers keep circumferential array distribution by taking the axis of the end face of the shaft lever as the circle center, a rubber layer is arranged on the outer wall of one side of each scraper, the scrapers are in contact with the pole pieces through the rubber layer, and the impurities attached on the outer wall of the pole piece are scraped, the rubber layer can rub the outer wall of the pole piece when contacting with the pole piece, and the impurities attached on the outer wall of the pole piece are scraped, meanwhile, because the rubber layer is made of soft material, the pole piece can not be damaged in the process of contact friction with the pole piece, and the pole piece can be prevented from being damaged in the process of scraping impurities. The connecting rod assemblies 3 are arranged on the outer wall of one side of the output end of the extrusion die 1, the connecting rod assemblies 3 are close to the output end of the extrusion die 1 and are closer to the coating operation station, the number of the connecting rod assemblies 3 is two, the two groups of connecting rod assemblies 3 are in central symmetry with respect to the extrusion die 1, the outer walls of the two ends of the shaft lever of the scraper roller 2 are respectively provided with a rotating bearing, the scraper roller 2 is respectively and rotatably connected with the two groups of connecting rod assemblies 3 through the rotating bearings, the scraper roller 2 is erected at one side of the output end of the extrusion die 1 through the connecting rod assemblies 3 at two sides, so that when the extrusion die 1 moves towards the outer wall of the coating roller under the driving of equipment, can make the scraper blade on 2 outer walls of scraper blade roller and the substrate contact on the coating roll outer wall to through the rubber layer on the scraper blade outer wall and the impurity friction on the substrate outer wall, make impurity and substrate outer wall separation, thereby prevent the coating defect because of adhering to impurity and causing on the substrate outer wall in the coating process. The coating quality of the pole piece substrate can be improved. The connecting rod assemblies 3 are movably arranged on the outer wall of the extrusion die 1, and the scraper roller 2 is movably arranged between the two groups of connecting rod assemblies 3.
When the coating device is used, firstly, a pole piece substrate needing coating is arranged on the outer wall of a coating roller, then a driving motor is used for driving the coating roller to rotate, the pole piece substrate can be ensured to keep moving on the outer wall of the coating roller, then an extrusion die 1 is communicated with an output end of a slurry output device, so that the slurry output device can output slurry to the extrusion die 1, then the coating device is moved, the extrusion die 1 moves towards the coating roller, in the moving process of the extrusion die 1, because a certain distance is kept between a scraper blade roller 2 and the extrusion die 1 through a connecting rod assembly 3, the scraper blade roller 2 firstly contacts and abuts against the outer wall of the coating roller, impurities on a contact point are scraped, along with the movement of the extrusion die 1, the scraper blade roller 2 moves around the outer wall of the coating roller under the driving of the connecting rod assembly 3 and keeps rotating, and adhesive impurities contacting with the scraper blade are scraped, when extrusion tooling 1 moved to the coating station, scraper blade roller 2 kept spatial position relatively fixed with the coating roller, because scraper blade roller 2 keeps rotating with link assembly 3 through rolling bearing and is connected, and the scraper blade on scraper blade roller 2 axostylus axostyle outer wall is provided with the rubber layer again, so when the motion was kept to the pole piece substrate, the pole piece substrate can contact with the rubber layer to promote the rubber layer, make scraper blade roller 2 keep rotating between the link assembly 3 of both sides, strike off the impurity on the pole piece substrate outer wall.
Make scraper blade roller 2 and the outer wall of coating roll keep a certain distance through link assembly 3, when using, extrusion tooling 1 moves towards the coating roll under the drive of equipment, at first scraper blade roller 2 can laminate to the outer wall of coating roll, and along with extrusion tooling 1's gradual motion, link assembly 3 makes the scraper blade on the outer wall of scraper blade roller 2 laminate the outer wall of coating roll and rotates, strike off the adnexed foreign matter of substrate outer wall on the coating roll, in the coating process, the scraper blade on scraper blade roller 2 is laminated on the outer wall of substrate all the time, strike off adnexed impurity on the substrate outer wall that will constantly move in the coating process.
The inside of extrusion tooling 1 is provided with drainage plate 4, and drainage plate 4 is connected with the output of the thick liquids output device of coating equipment, and thick liquids output device exports thick liquids to extrusion tooling 1, extrudes thick liquids to the pole piece base material via drainage plate 4 again, accomplishes the coating. Specifically, the drainage plate 4 has wedge portion 41 and plane portion 45, and the plane portion 45 of drainage plate 4 is connected with wedge portion 41, and forms the obtuse angle contained angle between plane portion 45 and the wedge portion 41, and when thick liquids flow to the outer wall of drainage plate 4 under thick liquids output equipment's effect on, thick liquids at first can keep flowing along wedge portion 41, and when thick liquids flow to wedge portion 41 and plane portion 45 juncture, thick liquids can continue to flow, until flow to plane portion 45 on. The one end embedding of drainage plate 4 is in extrusion tooling 1, makes plane portion 45 and extrusion tooling 1's outer wall be in same water flat line, guarantees the control coating thickness that can be accurate when carrying out thick liquids coating, can improve the precision of coating production, and then can improve the quality of pole piece substrate.
Rotating on extrusion tooling 1's output inner wall and being connected with rotating baffle 8, rotating baffle 8's quantity is corresponding with link assembly 3's quantity, and rotating baffle 8 keeps being connected with link assembly 3, and when link assembly 3 kept rotating under the drive of scraper roll 2, can order about rotating baffle 8 through link assembly 3 and rotate to extrusion tooling 1 inside. The mounting hole has been seted up to the symmetry on extrusion tooling 1's output, and fixed mounting has the axostylus axostyle on the outer wall of rotating baffle 8 one side, and rotating baffle 8 rotates through the rolling bearing that sets up on the axostylus axostyle to be connected in the mounting hole, owing to keep rotating through rolling bearing and connect, rotates the damping between rotating baffle 8 and the extrusion tooling 1 less, can make rotating baffle 8 keep smooth and easy rotation. When the existing extrusion die 1 is not used, the output end of the existing extrusion die is exposed in the air, and foreign matters are easily accumulated in the output end, so that the coating quality of a pole piece substrate is influenced during coating. When the rotating baffle 8 is located at the initial position, the output end of the extrusion die 1 is plugged by the two rotating baffles 8, so that impurities can be prevented from falling into the output end of the extrusion die 1 when the extrusion die is not used, and before the extrusion die is used, the scraper roller 2 can open the two rotating baffles 8 through the connecting rod assembly 3, so that coating work can be completed.
Fixed mounting has flexible portion 81 on the outer wall of rotating baffle 8 one side, flexible portion 81 specifically makes for high temperature resistant rubber material an organic whole, specific flexible portion 81 specifically is elongated structure, elongated structure's flexible portion 81 can laminate with wedge portion 41 on the outer wall of drainage plate 4, because elongated structure has long limit and the material is softer, in flexible portion 81 one side and the laminating of wedge portion 41, the opposite side of flexible portion 81 can laminate with rotating baffle 8's plane portion 45, rotating baffle 8 of elongated structure can block off plane portion 45's both ends, prevent that thick liquids from spilling. The outer wall of one side of the rotating baffle plate 8 is provided with a connecting hole, and one end of the connecting rod assembly 3 is arranged in the connecting hole.
When the coating device is used, the scraper roller 2 is firstly abutted against the outer wall of the coating roller, the connecting rod assembly 3 is driven to keep rotating through the scraper roller 2, the rotating baffle 8 and the connecting rod assembly 3 are kept in transmission connection, when the connecting rod assembly 3 keeps rotating, the rotating baffle 8 can rotate towards the inside of the extrusion die 1, the two rotating baffles 8 rotate, the output end of the extrusion die 1 is opened, when the rotating baffle 8 rotates, the flexible part 81 is abutted against the wedge-shaped part 41 on the outer wall of the rotating baffle 8, the flexible part 81 is made of soft material and can be attached to the outer wall of the wedge-shaped part 41, slurry flowing on the outer wall of the drainage plate 4 can flow into the plane part 45 from the wedge-shaped part 41, so that the coating work can be completed, after the coating device is used, the extrusion die 1 moves towards one side far away from the coating roller, at the moment, the scraper roller 2 resets under the action of the connecting rod assembly 3, at the same time, when the connecting rod assembly 3 moves, the rotating baffle 8 is reset.
Seted up a plurality of dysmorphism drainage portion 42 on the outer wall of 4 wedge portions 41 of drainage plate, seted up a plurality of reposition of redundant personnel portion 43 on the outer wall of one side of wedge portion 41, reposition of redundant personnel portion 43 specifically is circular arc structure, and the reposition of redundant personnel portion 43 of circular arc structure can be fine holds and dredge the thick liquid. The quantity of reposition of redundant personnel portion 43 and dysmorphism drainage portion 42's quantity looks adaptation, a plurality of reposition of redundant personnel portion 43 keeps linear array to distribute on the outer wall of wedge portion 41, reposition of redundant personnel portion 43 is linked together with dysmorphism drainage portion 42, a plurality of reposition of redundant personnel portion 43 all keeps the intercommunication with thick liquid output device's output, when thick liquid output device is to the inside output thick liquids of extrusion die, reposition of redundant personnel portion 43 shunts thick liquid from thick liquid output device output, and guide to dysmorphism drainage portion 42 respectively inside, again via dysmorphism drainage portion 42 with the plane portion of thick liquid drainage to drainage plate 4.
Specifically, the special-shaped drainage portions 42 are obliquely arranged on the outer wall of one side of the wedge-shaped portion 41, arc concave surfaces with different curvatures are arranged in different special-shaped drainage portions 42, the special-shaped drainage portions 42 are radially distributed on the outer wall of the wedge-shaped portion 41, a plurality of special-shaped drainage portions 42 are in central symmetry with respect to the central line of the outer wall of one side of the wedge-shaped portion 41, the arc concave surfaces arranged in the special-shaped drainage portions 42 can enable the slurry flowing into the special-shaped drainage portions 42 to flow out simultaneously, the curvature of the arc curved surface closer to the central axis of the wedge-shaped portion 41 is larger, the curvature of the arc curved surface farther away from the total junction in the wedge-shaped portion 41 is smaller, the arc curved surface with the smaller curvature can enable the slurry to flow to the plane portion 45 of the drainage plate 4 quickly when the slurry is guided, and the arc curved surface with the larger curvature can enable the slurry to flow along the inner wall of the arc when the slurry is guided, so as to slow down the flow rate of the slurry, so that all the slurry can flow onto the flat portion 45 at the same time as it moves from one end of the shaped drain portion 42 to the other.
The outer wall of one side of the wedge-shaped part 41 of the drainage plate 4 is also provided with a squeezing part 44, the squeezing part 44 is arranged between the flow dividing part 43 and the special-shaped drainage part 42, the squeezing part 44 is specifically an arc-shaped groove opening, the diameters of the squeezing parts 44 positioned in different special-shaped drainage parts 42 are different, the diameter of the squeezing part 44 on one side of the central line of the wedge-shaped part 41 is gradually reduced, the squeezing part 44 with larger diameter can slow down the flow speed of the slurry, the pressing part 44 with smaller diameter can accelerate the flow speed of the slurry, the pressing part 44 connects the flow dividing part 43 and the special-shaped drainage part 42, after the slurry is discharged from the slurry discharge device and flows into the flow dividing part 43, the flow speed of the slurry is increased or decreased by the flow dividing part 43, and the slurry is guided into the shaped drainage portion 42 and then guided to the planar portion 45 through the shaped drainage portion 42, thereby completing the coating.
The outer wall of one side of the extrusion die 1 is fixedly provided with an adapter 11, the connecting rod assembly 3 comprises a rotating arm 32 and a rotating plate 33, the rotating plate 33 is fixedly arranged on the outer wall of one side of the rotating arm 32, an included angle of 130 degrees is formed between the rotating plate 33 and the rotating arm 32, one end of the rotating arm 32 is rotatably connected into the adapter 11 arranged on the outer wall of one side of the extrusion die 1, the rotating arm 32 can keep free rotation on the outer wall of one side of the extrusion die 1, the outer wall of one side of the rotating plate 33 is provided with a notch, the inside of the notch is rotatably connected with a mounting plate 34 through a rotating bearing, a shaft rod of the scraper roller 2 is rotatably connected into the mounting plate 34, so that the scraper roller 2 can keep free rotation in the mounting plate 34, the connecting rod assembly 3 further comprises a reset rod 35, concretely, the reset rod 35 is a spring rod, and the spring rod can reset after acting forces at two ends are lost, the original length is kept, and when one end of the spring rod is pulled, the overall length of the spring rod can be prolonged. Fixedly mounted has the coupling seat 12 on the outer wall of extrusion tooling 1 one side, and in the coupling seat 12 of reset lever 35's one end passed through the axostylus axostyle rotation connection on extrusion tooling 1 outer wall, the other end of reset lever 35 passed through the axostylus axostyle rotation connection on the outer wall of rotor plate 33 one side. The connecting rod assembly 3 further comprises a connecting assembly 5, the connecting assembly 5 comprises a rod 52 and a connecting seat 53, the connecting seat 53 is rotatably connected to one end of the rod 52 through a shaft rod, so that the connecting seat 53 can freely rotate on one end of the rod 52, a first rotating seat 6 is rotatably connected on the outer wall of one side of the rotating baffle plate 8, a second rotating seat 7 is rotatably connected on the outer wall of one side of the rotating arm 32 through a shaft lever, one end of the rod body 52 is rotatably connected in the second rotating seat 7 through the shaft lever, the connecting seat 53 is rotatably connected in the first rotating seat 6 through the shaft lever, the rotating baffle 8 and the connecting rod assembly 3 are connected through the connecting assembly 5, so that the rotating baffle 8 can keep rotating when the rotating arm 32 of the connecting rod assembly 3 keeps rotating, the opening and closing of the rotating plate 33 are synchronous with the rotation of the rotating arm 32, and the output end of the extrusion die 1 can be opened or closed when the rotating arm 32 rotates.
When the scraper roller 2 is abutted to the outer wall of the coating roller, the mounting plate 34 is driven to rotate by the scraper roller 2, the rotating plate 33 is driven to keep rotating downwards by the rotation of the mounting plate 34, the rotating plate 33 and the rotating arm 32 are fixedly mounted, so that the rotating arm 32 can be synchronously kept rotating downwards when the rotating plate 33 keeps rotating, when the rotating arm 32 keeps rotating downwards, because one end of the reset rod 35 is rotatably connected to the outer wall of the rotating plate 33, and one end of the reset rod 35 can keep telescopic movement, when the rotating plate 33 keeps rotating, the movable end of the reset rod 35 contracts and presses the spring inside the reset rod 35. Because the rotor arm 32 keeps rotating downwards, so can make the first rotor seat 6 of rotating the connection on rotor arm 32 move down, and then through first rotor seat 6 removal pulling coupling assembling 5 downwards, because inside the connecting seat 53 rotation connection of coupling assembling 5 rotates the second rotor seat 7 on rotating the baffle 8, and rotate the baffle 8 and rotate again and connect in extrusion tooling 1, so can the one end of coupling assembling 5 keeping away from first rotor seat 6 when first rotor seat 6 moves down rotate towards extrusion tooling 1 axis, and then make the one end of rotating baffle 8 rotate towards extrusion tooling 1 inside.
After the use is finished, the extrusion die 1 moves towards the outside, the scraper roller 2 is separated from the coating roller, at the moment, under the action of the spring in the reset rod 35, one end of the reset rod 35 is reset, and the rotating arm 32 is driven to rotate upwards, when the rotating plate 33 rotates upward, the first rotating seat 6 rotatably connected to the rotating arm 32 moves upward, and the connecting assembly 5 is pushed upward by the first rotating seat 6, since the connecting seat 53 of the connecting assembly 5 is rotatably connected to the inside of the second rotating seat 7 of the rotating flap 8, and the rotating flap 8 is rotatably connected to the extrusion die 1, so that when the first rotating base 6 moves upwards, the end of the connecting component 5 away from the first rotating base 6 can rotate away from the axis of the extrusion die 1, and one end of the rotating baffle plate 8 rotates towards the outside of the extrusion die 1, and the output end of the extrusion die 1 is closed through the rotating baffle plate 8. When the rotating arm 32 keeps rotating upwards, the rotating plate 33 can be driven to keep synchronously rotating upwards to reset the rotating plate 33 and reset the scraper roller 2 through the rotation of the rotating plate 33 because the rotating plate 33 and the rotating arm 32 keep fixedly arranged.
The outer wall of one side of the rotating arm 32 is fixedly provided with a limiting part 31, the limiting part 31 comprises an inclined plate 37 and a butting rod 36, the inclined plate 37 is fixedly arranged on the outer wall of one side of the rotating arm 32, the butting rod 36 is of a cylindrical structure, the butting rod 36 is fixedly arranged on the outer wall of one side of the inclined plate 37, and the scraper roller 2 is limited to rotate towards the side far away from the coating roller through the butting rod 36.
When the scraper roller 2 is in use, when the scraper roller 2 is abutted against the coating roller, the scraper roller 2 drives the mounting plate 34 to rotate towards the side far away from the coating roller, when the mounting plate 34 rotates away from the coating roller, the abutting rod 36 is abutted against the mounting plate 34 to keep the mounting plate 34 fixed, at this time, the rotating plate 33 can be driven to rotate through the rotation of the mounting plate 34, and further, the rotating arm 32 can be kept rotating.
Still include the oppression unit, the oppression unit is torque spring specifically, torque spring sets up between mounting panel 34 and the rotor plate 33 of link assembly 3, because mounting panel 34 sets up on scraper blade roller 2, and rotor plate 33 sets up on rotor arm 32, and rotor arm 32 and rotor plate 33 keep fixed connection, torque spring's one end sets up on rotor plate 33, torque spring's the other end sets up on mounting panel 34, can order about mounting panel 34 to extrusion tooling 1 one side through the elasticity of torque spring self and rotate, thereby make mounting panel 34 can rotate towards coating roll one side all the time, and then can make the scraper blade on scraper blade roller 2 laminate the outer wall of coating roll all the time.
Still including setting up the cover plate 9 on extrusion tooling 1, cover plate 9 passes through welded fastening and connects on the outer wall of extrusion tooling 1 one side, and is concrete, and cover plate 9 is for having the panel of the structure of buckling, and extrusion tooling 1 is to the coating roll motion, and the one end of cover plate 9 is located directly over the coating roll, and the one end that cover plate 9 buckles can shelter from the foreign matter in the use, prevents that the foreign matter from dropping to the coating clearance.
The elastic coefficient of the torque spring mentioned in the article meets the technical requirements of the technical scheme of the invention.
It will be appreciated by those skilled in the art that other similar connections may be used to implement the present invention. Such as welding, bonding, or screwing.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides an anode slurry coating equipment based on lithium cell production, includes extrusion tooling (1) and coating roll, its characterized in that still includes:
a blade roll (2) on which a plurality of blades are arranged;
the connecting rod assembly (3) is arranged on the outer wall of the extrusion die (1), and the scraper roller (2) is in transmission connection with the connecting rod assembly (3);
the extrusion die (1) is driven to move towards the coating roll, and the scraper roll (2) is abutted against the outer wall of the coating roll through the connecting rod assembly (3) so that the scraper is attached to the outer wall of the coating roll to rotate.
2. The negative electrode slurry coating equipment based on lithium battery cell production of claim 1, further comprising a flow guide plate (4), wherein the flow guide plate (4) is arranged in the extrusion die (1), and the flow guide plate (4) is communicated with an output channel of the slurry output equipment, so that the slurry flows along the outer wall of the flow guide plate (4).
3. The negative electrode slurry coating equipment based on lithium battery cell production according to claim 1, further comprising a rotating baffle (8) rotatably disposed on the extrusion die (1), wherein the rotating baffle (8) is in transmission connection with the connecting rod assembly (3), and the rotating baffle (8) is driven to rotate towards the inside of the extrusion die (1) through the connecting rod assembly (3).
4. The negative electrode slurry coating equipment based on lithium battery cell production of claim 3, wherein the outer wall of the rotating baffle plate (8) is provided with a flexible portion (81), the drainage plate (4) is provided with a wedge-shaped portion (41), and the wedge-shaped portion (41) abuts against the rotating baffle plate (8) to enable the flexible portion (81) to be attached to the outer wall of the wedge-shaped portion (41).
5. The negative electrode slurry coating equipment based on lithium battery cell production of claim 2, wherein the drainage plate (4) is provided with a special-shaped drainage portion (42) on the outer wall, the drainage plate (4) is provided with a flow distribution portion (43), the flow distribution portion (43) is communicated with the special-shaped drainage portion (42), and the slurry is distributed into the special-shaped drainage portion (42) through the flow distribution portion (43).
6. The negative electrode slurry coating equipment based on lithium battery cell production according to claim 1, wherein the flow guide plate (4) is provided with a pressing portion (44), the pressing portion (44) is connected with the flow dividing portion (43) and the special-shaped flow guide portion (42), and the pressing portion (44) enables the slurry to converge and flow into the special-shaped flow guide portion (42).
7. The apparatus for coating the negative electrode slurry produced on the basis of the lithium battery cell according to claim 1, wherein the connecting rod assembly (3) further comprises a connecting assembly (5), wherein the connecting assembly (5) is connected with the rotating baffle (8), and when the connecting rod assembly (3) keeps rotating, the connecting assembly (5) drives the rotating baffle (8) to keep rotating.
8. The apparatus for coating the negative electrode slurry produced based on the lithium battery cell according to claim 1, wherein the connecting rod assembly (3) includes a limiting portion (31), and the scraper roll (2) is limited from rotating to one side by the limiting portion (31).
9. The negative electrode slurry coating equipment based on lithium battery cell production according to claim 1, further comprising a pressing unit, wherein the pressing unit is arranged between the scraper roller (2) and the connecting rod assembly (3), and the scraper roller (2) is attached to the outer wall of the coating roller through the pressing unit.
10. The negative electrode slurry coating equipment based on lithium battery cell production according to claim 1, further comprising a cover plate (9) arranged on the extrusion die (1), wherein the extrusion die (1) moves towards the coating roll, and the cover plate (9) is positioned right above the coating roll.
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| CN202111511026.9A CN114146869B (en) | 2021-12-11 | 2021-12-11 | Negative electrode slurry coating equipment based on lithium cell production |
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| CN114146869B CN114146869B (en) | 2022-08-26 |
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| JP2002273310A (en) * | 2001-03-16 | 2002-09-24 | Ishikawajima Harima Heavy Ind Co Ltd | Foaming preventing device for cleaning liquid of flow clean doctor |
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| CN114146869B (en) | 2022-08-26 |
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