CN110142178A - A kind of battery pole piece coating machine - Google Patents
A kind of battery pole piece coating machine Download PDFInfo
- Publication number
- CN110142178A CN110142178A CN201910450952.6A CN201910450952A CN110142178A CN 110142178 A CN110142178 A CN 110142178A CN 201910450952 A CN201910450952 A CN 201910450952A CN 110142178 A CN110142178 A CN 110142178A
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- Prior art keywords
- coating
- collector
- hopper
- mouth
- slurry
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- 238000000576 coating method Methods 0.000 title claims abstract description 187
- 239000011248 coating agent Substances 0.000 title claims abstract description 181
- 239000002002 slurry Substances 0.000 claims abstract description 74
- 230000007246 mechanism Effects 0.000 claims abstract description 71
- 238000007599 discharging Methods 0.000 claims abstract description 33
- 230000006872 improvement Effects 0.000 claims abstract description 26
- 239000011267 electrode slurry Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 7
- 238000010422 painting Methods 0.000 claims abstract description 5
- 239000004744 fabric Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 8
- 239000011149 active material Substances 0.000 claims description 5
- 238000007590 electrostatic spraying Methods 0.000 claims description 5
- 238000007731 hot pressing Methods 0.000 claims description 5
- 239000007767 bonding agent Substances 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 239000000428 dust Substances 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 17
- 229910052744 lithium Inorganic materials 0.000 description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 9
- 239000011888 foil Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000032258 transport Effects 0.000 description 4
- 238000001771 vacuum deposition Methods 0.000 description 4
- 238000007740 vapor deposition Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000006255 coating slurry Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- 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
- B05C1/0813—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 characterised by means for supplying liquid or other fluent material to the roller
-
- 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
- B05C1/0826—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 a web or sheets
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
-
- 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
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- 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
- B05C9/14—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 involving heating or cooling
-
- 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
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- 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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention relates to battery production equipment technical fields, disclose a kind of battery pole piece coating machine, comprising: the first coating mechanism, the second coating mechanism and retractable volume mechanism；Retractable volume mechanism includes discharging roll and receiving volume, discharging roll is used to install the collector of battery, collector on discharging roll successively continues to pass through first coating mechanism and second coating mechanism and winding in receiving volume, first coating mechanism is used to be coated with improvement property slurry in collection liquid surface, and the collection liquid surface that the second coating mechanism is used for after being coated with improvement property slurry is coated with electrode slurry.A kind of battery pole piece coating machine provided by the invention, by on collector apply improve property slurry process and on a current collector painting electrode slurry process be combined into one, reduce the introducing of the impurity such as dust, the moisture in collector coating improvement property slurry process, good basis is established to produce the finished product battery core haveing excellent performance later, is conducive to improve battery core performance.
Description
Technical field
The present invention relates to battery production equipment technical fields, more particularly to a kind of battery pole piece coating machine.
Background technique
Lithium ion battery has the characteristic of energy density height, good cycle and memory-less effect, and has safe and reliable
And the advantages that energy fast charging and discharging, it is widely used to many multiple fields at present, such as portable electronic product, hybrid vehicle
With power vehicle etc..Electrodes of lithium-ion batteries painting process to finished battery capacity, safety, consistency of performance, service life etc. all
With important influence.Positive and negative electrode pole piece current collector plays the function of attachment activity substance and electronic conduction in lithium battery.Lithium
The grain diameter of battery positive and negative electrode material is larger, so that the contact between particle and collector is contact of the point with face, this is not only
The pathway for reducing electronics increases resistance, also makes the adhesive force of active material and collector poor, causes to drop off,
The self-discharge rate of battery is caused to increase, cycle life shortens.
Currently, most of foil producers are surface-treated collector using functional coating, carbon-coated aluminum foils, copper foil are exactly
By scattered conductive nano graphite and carbon coating particle uniform, fine and smoothly coated on aluminium foil, copper foil, it can provide splendid
Static conductive performance, collects the micro-current of active material, thus the contact electricity being greatly reduced between positive and negative electrode material and collector
Resistance, and the adhesive force of the two is improved, the usage amount of binder can be reduced, and then the overall performance of battery is made to be significantly improved.
The coating process for applying carbon foil is that one layer of electrocondution slurry is first applied on light foil, is wrapped after drying, winding
Dress delivery enters next process.Since the foil surface roughness after painting carbon is high, large specific surface area, this to apply carbon foil
In the processes such as winding, packaging, transport, the impurity such as more dust, moisture are inevitably adsorbed, thus after directly affecting
The performance of continuous finished product battery core.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of battery pole piece coating machines, solve existing battery afflux liquid for solution or part
It is easy absorption more dust, moisture etc. after applying carbon, thus the problem of influencing subsequent finished product battery core performance.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of battery pole piece coating machines, comprising: the first coating mechanism,
Second coating mechanism and retractable volume mechanism；The retractable volume mechanism includes discharging roll and receiving volume, and the discharging roll is for installing
The collector of battery, the collector on the discharging roll successively continue to pass through first coating mechanism and second coating machine
Structure and winding is in receiving volume, first coating mechanism are used to be coated with improvement property slurry in the collection liquid surface, and described the
The collection liquid surface that two coating mechanisms are used for after being coated with improvement property slurry is coated with electrode slurry.
On the basis of above scheme, first coating mechanism includes the first coated stents, the first applicator roll and first
Hopper, the both ends of first applicator roll are rotatablely connected with the first coated stents respectively, and first hopper and described first applies
Cloth bracket is fixedly connected with and is located at the top of first applicator roll, and the top of first hopper is equipped with first charging aperture, institute
The bottom end for stating the first hopper is equipped with the first discharge port；Second coating mechanism include the second coated stents, the second applicator roll and
Second hopper, the both ends of second applicator roll are rotatablely connected with the second coated stents respectively, and the second hopper and described second applies
Cloth bracket is fixedly connected with and is located at the top of second applicator roll, and the top of second hopper is equipped with second charging aperture, institute
The bottom end for stating the second hopper is equipped with the second discharge port.
On the basis of above scheme, the improvement slurry of the first hopper inner containment includes carbonaceous conductive slurry, work
Property one of compound paste and bonding agent.
On the basis of above scheme, first discharge port is in be surrounded by first side, second side and two end faces
Column；The upper end of the first side connects with first hopper bottom end close to the side of the discharging roll, and described second
The upper end of side connects with first hopper bottom end far from the side of the discharging roll, the first side and described second side
The bottom end of the distance between both face is oppositely arranged and the distance between the two bottom end is less than upper end, the first side is lower than institute
State the bottom end of second side；Two end faces are arranged in columnar both ends, the top of the end face and first hopper bottom end phase
Even, the bottom end of the end face is divided into arc section and straightway from the first side to the second side, described the
Between one side and the bottom end of the second side, the first coating mouth, the first coating mouth and described the are set at straightway
One applicator roll is oppositely arranged.
On the basis of above scheme, second discharge port is the hollow cylinder structure of isosceles trapezoid, isosceles in section
Side where trapezoidal bottom is opening-like and connects with the bottom end of second hopper, where the upper bottom edge of isosceles trapezoid
Side it is opening-like and be provided in the opening with the second coating mouth, the second coating mouth is opposite with second applicator roll to be set
It sets.
On the basis of above scheme, further includes: the first baking oven and the second baking oven；First baking oven setting is described the
Between one coating mechanism and second coating mechanism, the collector passes through first baking oven；The second baking oven setting
Between second coating mechanism and the receiving volume, the collector passes through second baking oven.
On the basis of above scheme, further includes: the first calibrator and the second calibrator；The first calibrator setting exists
Between first baking oven and second coating mechanism, the collector passes through first calibrator；Second thickness measuring
Instrument is arranged between second baking oven and the receiving volume, and the collector passes through second calibrator.
On the basis of above scheme, further includes: several conveying rollers, the movement routine along the collector are equipped at intervals with
Several conveying rollers, for the collector to be supported and conveyed, the conveying roller is fixed by the bracket the conveying roller
And it is connect with holder pivots.
On the basis of above scheme, at least provided with a conveying roller lower than other conveyings in several described conveying rollers
Roller, the collector are passed through from the bottom of the low conveying roller, are passed through from the top of other conveying rollers.
On the basis of above scheme, the first coating mouth and the second coating mouth respectively include spinning dope mouth,
Hot pressing coating mouth, electrostatic spraying coating mouth, plasma spray coating coating mouth, slit coating coating mouth, web coatable coating
Mouth, dimple coating coating mouth, comma scraper coating coating mouth, screen print coating mouth, vapor deposition coating mouth, vacuum coating apply
Expect at least one of mouth and hot spray coating mouth.
(3) beneficial effect
A kind of battery pole piece coating machine provided by the invention, it is continuous that first coating mechanism and the second coating mechanism are set, it will
The process for applying the process of improvement property slurry on collector and applying electrode slurry on a current collector is combined into one, and can shorten technique stream
Journey reduces production cost and saves production space；Meanwhile collector carries out electrode slurry after coating improvement property slurry immediately
The coating of material can remove the process that the collector of coating improvement property slurry winds, packs and transports from, and then reduce coating improvement
Property slurry collector on the impurity such as dust, moisture introducing, produce the finished product battery core haveing excellent performance for after and establish well
Basis is conducive to improve battery core performance.
Detailed description of the invention
Fig. 1 is a kind of overall schematic of battery pole piece coating machine of the embodiment of the present invention；
Fig. 2 is a kind of schematic top plan view of battery pole piece coating machine of the embodiment of the present invention；
Fig. 3 is the schematic elevation view of the first hopper in the embodiment of the present invention；
Fig. 4 is the schematic side view of the first hopper in the embodiment of the present invention；
Fig. 5 is the schematic elevation view of the second hopper in the embodiment of the present invention；
Fig. 6 is the schematic side view of the second hopper in the embodiment of the present invention.
Description of symbols:
1-discharging roll；2-the first hopper；3-the first applicator roll；
4-the first coated stents；5-the first baking oven；6-the first calibrator；
7-the second hopper；8-the second applicator roll；9-the second coated stents；
10-conveying rollers；11-the second baking oven；12-the second calibrator；
13-receiving volumes；14-workbenches.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The embodiment of the present invention provides a kind of battery pole piece coating machine, and with reference to Fig. 1 and Fig. 2, which includes: the first coating
Mechanism, the second coating mechanism and retractable volume mechanism.Retractable volume mechanism includes discharging roll 1 and receiving volume 13.Discharging roll 1 is for installing
The collector of battery.Collector is wound after successively continuing to pass through the first coating mechanism and the second coating mechanism in receiving volume 13
On.First coating mechanism is used to be coated with improvement property slurry on the surface of collector, and the second coating mechanism is used to be coated with improvement
Collection liquid surface after property slurry is coated with electrode slurry.
A kind of battery pole piece coating machine provided in this embodiment, is installed to discharging roll 1 for uncoated battery afflux liquid
On.Collector is wrapped on discharging roll 1 in web-like, be can transport collector by the rotation of discharging roll 1 and is moved at coating mechanism
It is coated.Receiving volume 13 is wound the collector after coating by rotation in web-like, convenient for collection and storage again.
Two coating mechanisms are arranged in the coating machine, continuously carry out the coating of improvement property slurry to collector and electrode slurry applies
Cloth.It is used to enhance the adhesive force between the pole piece material and collector in electrode slurry, drop to collector coating improvement property slurry
Low contact internal resistance improves battery high rate performance and cycle performance so as to reduce the internal resistance of cell.
A kind of battery pole piece coating machine provided in this embodiment, it is continuous that first coating mechanism and the second coating mechanism are set,
By on collector apply improve property slurry process and on a current collector painting electrode slurry process be combined into one, technique stream can be shortened
Journey reduces production cost and saves production space；Meanwhile collector carries out electrode slurry after coating improvement property slurry immediately
The coating of material can remove the technique that the collector of coating improvement property slurry winds, packs and transports from, and then reduce coating improvement
Property slurry collector on the impurity such as dust, moisture introducing, produce the finished product battery core haveing excellent performance for after and establish well
Basis is conducive to improve battery core performance.
Further, improvement property slurry includes one in carbonaceous conductive slurry, active material slurry, bonding agent and polymer
Kind.Improvement property slurry can be carbonaceous conductive slurry, can be also other slurries that can change battery performance in addition to carbonaceous conductive slurry
Material.According to specific needs come select in the first coating mechanism improve property slurry materials.Carbon can also be adjusted flexibly according to demand
The formula of electrocondution slurry or other slurries, to adapt to production, preferably convenient for controlling and be easily industrialized.Second applies
The pole piece slurry of different ratio can also be added in cloth mechanism, execute-in-place is flexible, adaptable.
On the basis of the above embodiments, further, the first coating mechanism is coated with including the first coated stents 4, first
Roller 3 and the first hopper 2.The both ends of first applicator roll 3 are rotatablely connected with the first coated stents 4 respectively.First hopper 2 and first applies
Cloth bracket 4 is fixedly connected with and is located at the top of the first applicator roll 3, and the top of the first hopper 2 is equipped with first charging aperture, the first hopper
2 bottom end is equipped with the first discharge port.First hopper 2 is for accommodating improvement property slurry.Collector on discharging roll 1 is coated with from first
The top of roller 3 is passed through, and the first applicator roll 3 is supported collector and passes through rotation and conveys to collector.In collector
When by the first applicator roll 3, the slurry in the first hopper 2 is reached by the first discharge port to be coated on collector.
Second coating mechanism includes the second coated stents 9, the second applicator roll 8 and the second hopper 7.The two of second applicator roll 8
End is rotatablely connected with the second coated stents 9 respectively.Second hopper 7 is fixedly connected with the second coated stents 9 and is located at the second coating
The top of roller 8.The top of second hopper 7 is equipped with second charging aperture, and the bottom end of the second hopper 7 is equipped with the second discharge port.Second material
Case 7 is used for accommodate electrod slurry.Collector passes through from the top of the second applicator roll 8, and the second applicator roll 8 is supported collector
And collector is conveyed by rotation.When collector passes through the second applicator roll 8, slurry in the second hopper 7 passes through the
Two discharge ports reach to be coated on collector.
On the basis of the above embodiments, further, with reference to Fig. 3 and Fig. 4, the present embodiment is specific to the first discharge port
Structure is illustrated.First discharge port is in the column structure surrounded by first side, second side and two end faces.First goes out
Material mouth includes first side, second side and two end faces totally four planes, which surrounds bar shape.
The bottom end of first hopper 2 can be arranged in parallel with the first applicator roll 3；The bottom face of first hopper 2 can be rectangle, long
There are two axial parallel, the axis of other two side and the first applicator roll 3 of side and the first applicator roll 3 in rectangular bottom face
To vertical.The upper end of first side connects with 2 bottom end of the first hopper close to the side of discharging roll 1.I.e. the upper end of first side with
Close to a side phase of discharging roll 1 in first hopper, 2 bottom face, two sides parallel with the axial direction of the first applicator roll 3
It connects.
The upper end of second side connects with 2 bottom end of the first hopper far from the side of discharging roll 1.I.e. the upper end of second side with
Far from a side phase of discharging roll 1 in first hopper, 2 bottom face, two sides parallel with the axial direction of the first applicator roll 3
It connects.The setting that connects of first side and second side and 2 bottom end of the first hopper, so that the slurry flowed out from 2 bottom end of the first hopper
Between first side and second side.
The distance between both first side and second side are oppositely arranged and the distance between the two bottom end is less than upper end.
That is the bottom end of first side is obliquely installed towards second side, and the bottom end of second side is obliquely installed towards first side.First
There are distances between the bottom end of side and the bottom end of second side, that is, form opening, flow out to collection from the opening convenient for slurry
On fluid.Further, the tilt angle of first side and second side can be identical, can also be different, without limitation.
First side and second side can be rectangle, the long side of first side and second side respectively with the first hopper 2
Bottom end be connected.The bottom end of first side is lower than the bottom end of second side.That is width of the width of first side greater than second side
Degree.So that the bottom end of first side is more nearly the first applicator roll 3.Between the bottom end of second side and the first applicator roll 3 away from
From the distance between the bottom end and the first applicator roll 3 for being greater than first side.
The both ends of column structure are arranged in two end faces.Two end faces are the end of main structure.End face is respectively with
One side and second side are vertically connected, positioned at the end of first side and second side.The axis of the column structure and first
The bottom face of hopper 2 is parallel.The top of end face is connected with 2 bottom end of the first hopper.That is the top of end face and 2 bottom face of the first hopper
The side perpendicular with the axial direction of the first applicator roll 3 is connected.The concrete shape of end face is surrounded with by first side and second side
Pole section shape it is consistent.The two sides of end face are corresponding with first side and second side respectively to be connected.
Because the bottom end of first side and second side height is inconsistent, by the bottom end of end face from first side to the
Two side faces are divided into arc section and straightway, at the bottom of the end of column structure connection first side and second side
End.Wherein straightway is arranged close to second side, and arc section is arranged close to first side.The axis of straightway and the first applicator roll 3
To perpendicular, the radian of arc section and the surface radian of the first applicator roll 3 match.
Between first side and the bottom end of second side, the first coating mouth is set at straightway.First side and second
Opening is formed between the bottom end of side.The first coating mouth is set with the straight line fragment position corresponding position of end face in the openings.I.e.
Slurry in one hopper 2 from the straightway between first side and the bottom end of second side, close to second side outflow through the
One coating mouth reaches the collection liquid surface on the first applicator roll 3.First coating mouth is oppositely arranged with the first applicator roll 3.
The specific setting structure of first discharge port, on the one hand, first side can play the slurry flowed out through the first coating mouth
To barrier effect, it can prevent slurry from falling in the afflux body region for not carrying out coating slurry and influencing coating effect；Another party
Face because slurry tension is larger, although arc section between first side and second side bottom end has an opening, opening compared with
Small slurry is not fallen out, can be in the slurry pool of arc section one strip of formation, and because the arc section is lower, so that collector
It can be contacted with the slurry in the slurry pool when passing through, the collector of the part is impregnated wherein, that is, collector exists
Conveying is passed through from the slurry pool when mobile, slurry can either be made to be distributed more uniform, and slurry can be made to be coated in afflux
Each part of body is conducive to uniformly coat.
On the basis of the above embodiments, further, with reference to Fig. 5 and Fig. 6, the second discharge port is isosceles trapezoid in section
Hollow cylinder structure.Second discharge port equally surrounds column structure by two sides and two end faces, which cuts
Face is in isosceles trapezoid, that is, the setting when width and gradient all the same of first side and second side in the first discharge port
Set structure.
Side where the bottom of isosceles trapezoid is opening-like and connects with the bottom end of the second hopper 7, isosceles trapezoid
Side where upper bottom edge is opening-like and is provided in the opening with the second coating mouth.In bottom, that is, isosceles trapezoid of isosceles trapezoid
Two to be parallel to each other are while length is longer in；Length is shorter in two sides being parallel to each other in upper plate, that is, isosceles trapezoid
Side.Second coating mouth is oppositely arranged with the second applicator roll 8.
On the basis of the above embodiments, further, the first coating mouth and the second coating mouth respectively include spinning dope
Mouth, hot pressing coating mouth, electrostatic spraying coating mouth, plasma spray coating coating mouth, slit coating coating mouth, web coatable apply
Expect mouth, dimple coating coating mouth, comma scraper coating coating mouth, screen print coating mouth, vapor deposition coating mouth, vacuum coating
At least one of coating mouth and hot spray coating mouth.
That is the coating method of the first coating mouth can be spin coating, hot pressing, electrostatic spraying, plasma spray coating, slit
One of coating, web coatable, dimple coating, comma scraper coating, silk-screen printing, vapor deposition, vacuum coating, thermal spraying
Or it is several by carbonaceous conductive slurry coating on a current collector.
The coating method of second coating mouth can be spin coating, hot pressing, electrostatic spraying, plasma spray coating, slit painting
One of cloth, web coatable, dimple coating, comma scraper coating, silk-screen printing, vapor deposition, vacuum coating, thermal spraying or
On several collectors that electrode slurry has been applied to one layer of slurry.
On the basis of the above embodiments, further, a kind of battery pole piece coating machine further include: the first baking oven 5 and
Two baking ovens 11；First baking oven 5 is arranged between the first coating mechanism and the second coating mechanism, and the collector on discharging roll 1 passes through
First baking oven 5；Second baking oven 11 is arranged between the second coating mechanism and receiving volume 13, and collector passes through the second baking oven 11.The
One baking oven 5 and the second baking oven 11 are used to carry out drying and processing to slurry.
Further, because coating thickness of the coating thickness of electrode slurry generally than improvement property slurry is thick, the
The length of two baking ovens 11 can be greater than the length of the first baking oven 5, to carry out sufficiently complete drying and processing to electrode slurry.
On the basis of the above embodiments, further, a kind of battery pole piece coating machine further include: 6 He of the first calibrator
Second calibrator 12；First calibrator 6 is arranged between the first baking oven 5 and the second coating mechanism, and the collector on discharging roll 1 is worn
Cross the first calibrator 6；Second calibrator 12 is arranged between the second baking oven 11 and receiving volume 13, and collector passes through the second calibrator
12.First calibrator 6 and the second calibrator 12 are set for the coating thickness of slurry to be detected and modified.
On the basis of the above embodiments, further, a kind of battery pole piece coating machine further include: several conveying rollers
10, several conveying rollers 10 are equipped at intervals with along the movement routine of collector, conveying roller 10 is conveyed for being supported to collector
Roller 10 is fixed by the bracket and connect with holder pivots.Conveying roller 10 is for being supported collector and by rotation to afflux
The movement of body is driven.
On the basis of the above embodiments, further, low at least provided with a conveying roller 10 in several conveying rollers 10
In other conveying rollers 10, collector is passed through from the bottom of the conveying roller 10, is passed through from the top of other conveying rollers 10.Setting is wherein
One conveying roller 10 is lower, so that collector is passed through from the bottom of the conveying roller 10, is conducive to the tensioning of collector, convenient for smooth
It carries out coating slurry and is preferably wound convenient for receiving volume 13, improve coating efficiency.
On the basis of the above embodiments, further, with reference to Fig. 1 and Fig. 2, a kind of lithium battery pole slice coating machine includes applying
Cloth mechanism, drying mechanism, mechanism for measuring thick, retractable volume mechanism and transmission mechanism；Each mechanism may be provided on workbench 14.Coating
Mechanism include two coated stents, with the applicator roll of each coated stents rotation connection and with each coated stents connect and be placed in
Hopper on applicator roll, the charging nozzle being mounted on hopper top surface, the coating mouth being mounted on hopper bottom surface；Drying mechanism packet
Include the baking oven being arranged in after each coated stents；Mechanism for measuring thick includes two calibrators；Retractable volume mechanism includes 1 He of discharging roll
Receiving volume 13；Transmission mechanism includes 5 conveying rollers 10.
Specifically, the coating machine includes the first coated stents 4 and the second coated stents 9, rotates and connect with the first coated stents 4
The first applicator roll 3 connect and the first hopper 2 being connect with the first coated stents 4 and the first hopper 2 be located at the first applicator roll 3 it
Above, the first charging aperture being mounted on 2 top surface of the first hopper, the first coating mouth being mounted on 2 bottom surface of the first hopper, with second
The second applicator roll 8 and the second hopper 7 connecting with the second coated stents 9 and the second hopper 7 that coated stents 9 are rotatablely connected are located at
On second applicator roll 8, the second charging aperture being mounted on 7 top surface of the second hopper, be mounted on 7 bottom surface of the second hopper second
Coating mouth.
Drying mechanism includes second after the first baking oven 5 and the second coated stents 9 after the first coated stents 4 are arranged in
Baking oven 11.Mechanism for measuring thick include the first calibrator 6 after the first baking oven 5 is set and be arranged in after the second baking oven 11 the
Two calibrators 12.Retractable volume mechanism includes discharging roll 1 before the first coated stents 4 are arranged in and is arranged in after conveying roller 10
Receiving volume 13.
Transmission mechanism include conveying roller 10 after the second coated stents 9 are set, three after the second baking oven 11 it is defeated
Send the conveying roller 10 after roller 10 and the second calibrator 12.Other improvement electricity in addition to carbonaceous conductive slurry can be filled in first hopper 2
The slurry of pond pole piece performance and coating process, such as active material slurry, binder, polymer.Discharging roll 1 and receiving volume 13 can
Including dead axle, dead axle can be connect with holder pivots, and collector is wrapped on dead axle, and collector can be achieved by the rotation of dead axle
It is mobile.
Uncoated lithium battery collector is installed on discharging roll 1, sequentially pass through the first applicator roll 3, the first baking oven 5,
First calibrator 6, the second applicator roll 8, conveying roller 10,11, three conveying rollers 10 of the second baking oven, the second calibrator 12, conveying roller
It is fixed to after 10 on the dead axle in receiving volume 13.
When the lithium battery pole slice coating machine is coated with, firstly, uncoated lithium battery collector is installed on discharging roll 1,
Across the first applicator roll 3 and coat one layer of carbonaceous conductive slurry；It is applied secondly, reaching second by the first baking oven 5, the first calibrator 6
Cloth rewinder roll 8, and the electrode coated slurry on carbonaceous conductive coating；Later, by second baking oven and the second calibrator 12；Finally, solid
Determine onto the dead axle of receiving volume 13.The pole piece of coating machine coating makes the Adhesion enhancement between pole piece material and collector, connects
Touching internal resistance reduces, to reduce the internal resistance of cell, improves battery high rate performance and cycle performance.
In the part that the first coating mouth and lithium battery collector contact, it is capable of forming the slurry pool of a strip, by this
Partial collector impregnates wherein, slurry can on the one hand be distributed more uniform, on the other hand can also slurry be made to apply
Overlay on each part of lithium battery pole slice.
The present embodiment is similar with the coating process of lithium battery pole slice based on the coating process for applying carbon foil, is all first in light foil
One layer of slurry is applied on material, is packed after drying, winding and is delivered or enter next process, proposes a kind of novel lithium battery
Pond pole piece coating machine can reduce the introducing of impurity from source, and shorten process flow, reach raising production efficiency, reduce production
The target of cost.
The lithium battery pole slice coating machine, can be by the process for applying carbonaceous conductive layer on collector and the work for applying slurry on a current collector
Sequence is combined into one, and so as to shorten process flow, reduces production cost, saving production space.Lithium battery pole slice coating machine coating
Pole piece, reduce apply carbon foil impurity such as dust, moisture in winding, packaging, transportational process introducing, for after produce
The finished product battery core haveing excellent performance is had laid a good foundation.
The lithium battery pole slice coating machine, being capable of the formula of size of flexibly adjustment carbonaceous conductive coating, coating according to demand
Thickness, coating single or double etc..To better adapt to production, convenient for controlling, be easily industrialized.The lithium battery pole slice
Other slurries that can change battery performance in addition to carbonaceous conductive slurry are added in coating machine in the first hopper 2, or can also
It is directly added into the pole piece slurry of different ratio, execute-in-place is flexible, adaptable.
The shape of first discharge port of the lithium battery pole slice coating machine and the shape of the first applicator roll 3 match, so that applying
The part that material mouth is contacted with lithium battery collector, is capable of forming the slurry pool of a strip, and the collector of the part is impregnated
Wherein, slurry has on the one hand been saved, has reduced production cost, there are also certain to squeeze to lithium battery pole slice for another aspect applicator roll
Pressure effect, the distribution that slurry can be made more uniform.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of battery pole piece coating machine characterized by comprising the first coating mechanism, the second coating mechanism and retractable volume machine
Structure；The retractable volume mechanism includes discharging roll and receiving volume, and the discharging roll is used to install the collector of battery, the discharging roll
On collector successively continue to pass through first coating mechanism and second coating mechanism and winding in the receiving volume,
First coating mechanism is used to be coated with improvement property slurry in the collection liquid surface, and second coating mechanism is for being coated with
Collection liquid surface after improvement property slurry is coated with electrode slurry.
2. battery pole piece coating machine according to claim 1, which is characterized in that first coating mechanism includes the first painting
Cloth bracket, the first applicator roll and the first hopper, the both ends of first applicator roll are rotatablely connected with the first coated stents respectively, institute
The top that the first hopper was fixedly connected with and was located at first applicator roll with first coated stents is stated, first hopper
Top is equipped with first charging aperture, and the bottom end of first hopper is equipped with the first discharge port；
Second coating mechanism include the second coated stents, the second applicator roll and the second hopper, the two of second applicator roll
End is rotatablely connected with the second coated stents respectively, and the second hopper is fixedly connected with second coated stents and is located at described second
The top of applicator roll, the top of second hopper are equipped with second charging aperture, and the bottom end of second hopper is equipped with the second discharging
Mouthful.
3. battery pole piece coating machine according to claim 2, which is characterized in that the improvement of the first hopper inner containment
Property slurry includes one of carbonaceous conductive slurry, active material slurry and bonding agent.
4. battery pole piece coating machine according to claim 2, which is characterized in that first discharge port is in by the first side
The column that face, second side and two end faces surround；The upper end of the first side and first hopper bottom end are close to described
The side of discharging roll connects, side phase of the upper end of the second side with first hopper bottom end far from the discharging roll
Connect, between both the first side and the second side are oppositely arranged and the distance between the two bottom end is less than upper end away from
From the bottom end of the first side is lower than the bottom end of the second side；
Two end faces are arranged at columnar both ends, and the top of the end face is connected with first hopper bottom end, the end face
Bottom end is divided into arc section and straightway from the first side to the second side, in the first side and described
Between the bottom end of two side faces, the first coating mouth is set, the first coating mouth is opposite with first applicator roll to be set at straightway
It sets.
5. battery pole piece coating machine according to claim 4, which is characterized in that second discharge port is isosceles in section
Trapezoidal hollow cylinder structure, the side where the bottom of isosceles trapezoid is opening-like and bottom end phase with second hopper
It connects, the side where the upper bottom edge of isosceles trapezoid is opening-like and is provided in the opening with the second coating mouth, the second coating mouth
It is oppositely arranged with second applicator roll.
6. battery pole piece coating machine according to any one of claims 1 to 5, which is characterized in that further include: the first baking oven and
Two baking ovens；First baking oven is arranged between first coating mechanism and second coating mechanism, and the collector is worn
Cross first baking oven；Second baking oven is arranged between second coating mechanism and the receiving volume, the collector
Across second baking oven.
7. battery pole piece coating machine according to claim 6, which is characterized in that further include: the first calibrator and second is surveyed
Thick instrument；First calibrator is arranged between first baking oven and second coating mechanism, and the collector passes through institute
State the first calibrator；Second calibrator is arranged between second baking oven and the receiving volume, and the collector passes through
Second calibrator.
8. battery pole piece coating machine according to claim 6, which is characterized in that further include: several conveying rollers, along described
The movement routine of collector is equipped at intervals with several conveying rollers, and the conveying roller is for being supported the collector and defeated
It send, the conveying roller is fixed by the bracket and connect with holder pivots.
9. battery pole piece coating machine according to claim 8, which is characterized in that in several described conveying rollers at least provided with
One conveying roller is lower than other conveying rollers, and the collector passes through from the bottom of the low conveying roller, from the top of other conveying rollers
Portion passes through.
10. battery pole piece coating machine according to claim 5, which is characterized in that the first coating mouth and described second
Coating mouth respectively includes spinning dope mouth, hot pressing coating mouth, electrostatic spraying coating mouth, plasma spray coating coating mouth, slit
Formula be coated with coating mouth, web coatable coating mouth, dimple coating coating mouth, comma scraper coating coating mouth, screen print coating mouth,
Be vapor-deposited at least one of coating mouth, vacuum metallizing coating mouth and hot spray coating mouth.
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|---|---|---|---|
| CN201910450952.6A CN110142178A (en) | 2019-05-28 | 2019-05-28 | A kind of battery pole piece coating machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910450952.6A CN110142178A (en) | 2019-05-28 | 2019-05-28 | A kind of battery pole piece coating machine |
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| CN113663863A (en) * | 2021-09-26 | 2021-11-19 | 江西京九动力能源有限公司 | Lithium battery electrode plate coating machine |
| CN114558758A (en) * | 2022-02-28 | 2022-05-31 | 淮安亿荣纸业有限公司 | Gluing machine for carton production and use method thereof |
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| CN115432489A (en) * | 2022-09-19 | 2022-12-06 | 嘉峪关华锐智源工业技术有限公司 | Coating device for copper foil surface coating |
| CN115763689A (en) * | 2022-11-30 | 2023-03-07 | 重庆太蓝新能源有限公司 | Positive plate coating method and equipment and positive plate |
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