CN105880104A - Coating mechanism, slit coating device and film preparation method - Google Patents
Coating mechanism, slit coating device and film preparation method Download PDFInfo
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- CN105880104A CN105880104A CN201610353123.2A CN201610353123A CN105880104A CN 105880104 A CN105880104 A CN 105880104A CN 201610353123 A CN201610353123 A CN 201610353123A CN 105880104 A CN105880104 A CN 105880104A
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- support member
- storage tank
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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
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
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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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
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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
- 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
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- 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
-
- 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
Abstract
The invention discloses a coating mechanism, a slit coating device and a film preparation method. The coating mechanism comprises a base, a supporting table, a movable supporting part and a fluid storage tank with a nozzle, wherein both the supporting table and the movable supporting part are fixed on the base; the fluid storage tank is fixed on the movable supporting part and driven by the movable supporting part to move relative to the supporting table; and when the fluid storage tank moves, a fluid material in the fluid storage tank is sprayed by the nozzle onto a to-be-coated sample fixed on the supporting table for direct film formation. By adoption of the coating mechanism, the slit coating device and the film preparation method provided by the invention, the technical problems that a conventional gel polymer lithium battery film formation device and method are high in cost and low in film formation quality can be solved. Furthermore, the slit coating device provided by the invention is low in cost and uniform in coating effect.
Description
Technical field
The present invention relates to battery manufacturing equipment technical field, particularly relate to a kind of coating mechanism, slot coated dress
Put and membrane preparation method.
Background technology
Running voltage is high, have extended cycle life, energy density is high, volume is little, weight because having for lithium ion battery
Gently, pollute the advantages such as little, be widely used in the electronic product such as mobile phone, notebook computer, and become
One of first-selected power supply for following Prospect of EVS Powered with Batteries.And gel polymer electrolyte has liquid electricity
Solve the carrier dual-use function of the barrier film in electrolyte cell system and ionic conduction.Owing to system not existing or exist
The solvent of a small amount of free state, gel polymer electrolyte can fundamentally solve conventional lithium ion battery to be made
The problems such as the leakage that is likely to occur during with, inflammable and blast, significantly improve the safety of lithium ion battery
Performance.It addition, gel polymer lithium ion battery also embody with low cost, be conducive to developing controlled shape
Etc. series of advantages.Therefore, how to synthesize good with compatibility of electrolyte, microstructure is preferable and has one
The polymer dielectric film determining mechanical strength has become the emphasis of research at present.
The production technology operation of existing gel polymer lithium ion battery film forming is sufficiently complex, often first every
Generate polymer dielectric film by web-like coating machine on film, then pole piece-film-pole piece is carried out simple superposition
Prepare, this traditional method preparation process needs carry out the technological processes such as battery winding barrier film and fluid injection and
Equipment, cost is high and film forming is uneven, causes battery performance the best.
It is to say, gel polymer lithium ion battery film formation device of the prior art and method, exist into
This height and the best technical problem of quality of forming film.
Summary of the invention
The present invention, by providing a kind of coating mechanism, slot coated device and membrane preparation method, solves existing
Gel polymer lithium ion battery film formation device in technology and method, the cost existed height and quality of forming film are not
Good technical problem.
For solving above-mentioned technical problem, on the one hand, the technical scheme is that
A kind of coating mechanism, described coating mechanism includes: base, saddle, moveable support member and band spray
The fluid storage tank of mouth；Described saddle and described moveable support member are each attached on described base；Wherein,
Described fluid storage tank is fixed in described moveable support member, with the band in described moveable support member
Move relative to described saddle under Dong；Wherein, during described fluid storage tank moves, described fluid
Fluent material in hold-up tank is applied on the sample to be coated that described saddle is fixing directly by described nozzle
Film forming.
Optionally, described moveable support member includes: X-axis movable support member and X-axis control parts,
Described X-axis movable support member controls parts with described X-axis and is connected, to control parts in described X-axis
Reciprocate along X-direction under control；Z axis movable support member and Z axis control parts, and described Z axis can
Moveable support and described Z axis control parts and are connected, with under the control of described Z axis control parts along Z
Direction of principal axis reciprocates；Y-axis controls parts, and described Y-axis controls parts and is connected with described fluid storage tank,
Reciprocate along Y direction with the described fluid storage tank of control；Wherein, described fluid storage tank and described Z
Axle movable support member connects, and supports by described Z axis movable support member and described X-axis are removable
Part connects, so that described fluid storage tank can be along described X-direction, described Y direction and described Z axis
Direction reciprocates；Wherein, described X-direction, described Y direction and described Z-direction are hung down two-by-two
Directly.
Optionally, described nozzle is flat-shaped gap nozzle.
Optionally, described nozzle is connected with described fluid storage tank by transitional fluid district；Described transitional fluid
District is provided with controllable valve, to control the speed that described fluent material flows out from described nozzle.
Optionally, described nozzle is provided with displacement transducer, to monitor described nozzle and described cloth specimen to be coated
The distance of product.
On the other hand, it is provided that a kind of slot coated device, described device includes:
Horizontal support platform, described horizontal support platform is fixed with the coating mechanism described in first aspect, substrate material
Material transfer device and film forming calorstat；Wherein, described base material transfer device be positioned at described coating mechanism and
Between described film forming calorstat, transfer to described film forming with the described sample after being coated with by described coating mechanism permanent
Incubator heats film forming.
Optionally, described base material transfer device includes: shift base, rotatable supporter, longitudinal direction can
Reduction mechanical arm, laterally can reduction mechanical arm and hold assembly；Wherein, described hold assembly passes sequentially through institute
State laterally can reduction mechanical arm, described longitudinal direction can reduction mechanical arm, described rotatable supporter and described transfer
Base is fixed on described horizontal support platform, so that described hold assembly can be at the band of described rotatable supporter
Dynamic lower rotate, described longitudinal direction can reduction mechanical arm and described laterally can be along longitudinally under the drive of reduction mechanical arm
Direction and horizontal direction back and forth movement；Wherein, described longitudinal direction is vertical with described horizontal direction.
Optionally, described hold assembly laterally can be connected by reduction mechanical arm with described by rotary connector, with
The described rotary sample turn-over of described hold assembly clamping can be driven.
Optionally, described film forming calorstat includes: casing, and described casing is provided with box opening；Described
Described sample is put into described casing by described box opening by base material transfer device；Incubator saddle,
It is arranged in described casing, to support the described sample after placing coating；Heating plate and with described heating plate even
The attemperating unit connect, described heating plate and described attemperating unit may be contained within described casing, described to control
The temperature of box house.
Another further aspect, it is provided that a kind of membrane preparation method, described method is applied to the slit described in second aspect and is coated with
Cloth apparatus, described method includes:
Described fluid storage tank moves relative to described saddle under the drive of described moveable support member, and
By described nozzle by sample to be coated fixing for described fluent material even spread to described saddle；
Described sample after coating is transferred in described film forming calorstat by described base material transfer device；
By described film forming calorstat, the described sample after coating is heated, with in described sample surfaces film forming.
The one or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or excellent
Point:
The mechanism of the embodiment of the present application offer, device and method, arrange the moveable support member of coating mechanism
Fluid storage tank is driven to move, thus by nozzle by the fluent material even spread in fluid storage tank to treating
In coated sample, it is achieved that the in-situ preparation of film, on the one hand, gel polymer electrolyte component can be reduced
Deng fluent material movement on pole piece, strengthen the wellability of positive/negative plate matrix, improve gel electrolyte with
The interface compatibility of electrode, is conducive to reducing interface resistance, improves cyclical stability and high rate performance；Another
Aspect, eliminates conventional lithium ion battery winding barrier film, the technological process of fluid injection, cost-effective, improves raw
Produce efficiency；Another further aspect, by the control of transfer device, it is possible to achieve coating film forming and upstream and downstream operation
Quickly connect, and this apparatus structure is simple, low cost, it is easy to large-scale production.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawing can be obtained according to the accompanying drawing provided.
Fig. 1 is the structure chart of slot coated device in the embodiment of the present application；
Fig. 2 is the structure chart of coating mechanism in the embodiment of the present application；
Fig. 3 is the structure chart of base material transfer device in the embodiment of the present application；
Fig. 4 is the structure chart of film forming calorstat in the embodiment of the present application；
Fig. 5 is the flow chart of membrane preparation method in the embodiment of the present application.
Detailed description of the invention
The present invention, by providing a kind of coating mechanism, slot coated device and membrane preparation method, solves existing
Gel polymer lithium ion battery film formation device in technology and method, the cost existed height and quality of forming film are not
Good technical problem.Provide a kind of low cost and be coated with uniform slot coated device.
For solving above-mentioned technical problem, the general thought of the embodiment of the present application offer technical scheme is as follows:
The application provides a kind of coating mechanism, and described coating mechanism includes:
The fluid storage tank of base, saddle, moveable support member and band nozzle；Described saddle and described can
Mobile support member is each attached on described base；Wherein, described fluid storage tank is fixed on described removable
In support member, to move relative to described saddle under the drive of described moveable support member；Wherein,
During described fluid storage tank moves, the fluent material in described fluid storage tank passes through described nozzle
It is applied to direct formation of film at surface on the sample to be coated that described saddle is fixing.
The mechanism of the embodiment of the present application offer, device and method, arrange the moveable support member of coating mechanism
Fluid storage tank is driven to move, thus by nozzle by the fluent material even spread in fluid storage tank to sample
On product, it is achieved that the in-situ preparation of film, on the one hand, the fluids such as gel polymer electrolyte component can be reduced
Material movement on pole piece, strengthens the wellability of positive/negative plate matrix, improves gel electrolyte and electrode
Interface compatibility, is conducive to reducing interface resistance, improves cyclical stability and high rate performance；On the other hand,
Eliminate conventional lithium ion battery winding barrier film, the technological process of fluid injection and corollary equipment, cost-effective, carry
High efficiency；Another further aspect, by the control of transfer device, it is possible to achieve coating film forming and upstream and downstream work
The quick connection of sequence, it is easy to large-scale production.
In order to be better understood from technique scheme, below in conjunction with specific embodiment to above-mentioned technical side
Case is described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment is to the application
The detailed description of technical scheme rather than the restriction to technical scheme, in the case of not conflicting,
Technical characteristic in the embodiment of the present application and embodiment can be mutually combined.
Embodiment one
In the present embodiment, it is provided that a kind of coating mechanism 2, refer to Fig. 1, Fig. 1 is that the application implements
The structure chart of slot coated device in example, as it is shown in figure 1, described coating mechanism 2 includes: base 200,
The fluid storage tank 240 of saddle 201, moveable support member 202 and band nozzle 210；Described saddle 201
It is each attached on described base 200 with described moveable support member 202；Wherein, described fluid storage tank
240 are fixed in described moveable support member 202, with the drive in described moveable support member 202
Under move relative to described saddle 201；Wherein, during described fluid storage tank 240 moves, institute
The fluent material stated in fluid storage tank 240 is applied to what described saddle 201 was fixed by described nozzle 210
Direct formation of film at surface on sample to be coated.
Specifically, described sample can be one or more in anode pole piece or cathode pole piece.
In specific implementation process, described slot coated device may be used for lithium ion battery manufacture and researched and developed
Prepared by the coating of the gel electrolyte membrane in journey, it is also possible to for the preparation of other battery pole pieces, or weaving,
The one-tenth film preparation in the field such as plated film or cleaning, this is not restricted.
Below, the structure of coating mechanism 2 that the present embodiment provide is discussed in detail in conjunction with Fig. 1-2.
As depicted in figs. 1 and 2, described horizontal support platform 1 is positioned at the lowermost end of described device, for coating machine
Structure 2, base material transfer device 3 and film forming calorstat 4 provide support platform.
Specifically, the Main Function of described coating mechanism 2 is that sample is coated with certain thickness fluent material.
Described saddle 201 is the rest area of the described sample needing film；In order to enable described sample is carried out comprehensively and
Controlled film, described moveable support member 202 includes:
X-axis movable support member 220 and X-axis control parts 221, described X-axis movable support member 220
With described X-axis control parts 221 be connected, with described X-axis control parts 221 control under along X-axis
Direction reciprocates；
Z axis movable support member 230 and Z axis control parts 231, described Z axis movable support member 230
With described Z axis control parts 231 be connected, with described Z axis control parts 231 control under along Z axis
Direction reciprocates；
Y-axis controls parts 241, and described Y-axis controls parts 241 and is connected with described fluid storage tank 240,
Reciprocate along Y direction with the described fluid storage tank 240 of control；
Wherein, described fluid storage tank 240 is connected with described Z axis movable support member 230, and passes through institute
State Z axis movable support member 230 to be connected with described X-axis movable support member 220, so that described fluid
Hold-up tank 240 can reciprocate along described X-direction, described Y direction and described Z-direction；Its
In, described X-direction, described Y direction and described Z-direction are the most vertical.
Specifically, described Y-axis controls parts 241 and can control described fluid storage tank 240 along described Y
Distance that axle reciprocates and speed, thus control the distance of described nozzle 210 and the sample on saddle 201.
Described X-axis controls parts 221 can be past along described X-direction by controlling X-axis movable support member 220
Return speed and the distance of motion, and by the transmission of described Z axis movable support member 230, control described stream
Distance that body hold-up tank 240 reciprocates along described X-axis and speed.Described Z axis controls parts 231 energy
By controlling Z axis movable support member 230 along the speed of described Z-direction back and forth movement and distance, drive
Control distance and speed that described fluid storage tank 240 reciprocates along described Z axis.
In specific implementation process, described nozzle 210 and described sample are narrow in the distance of described Y direction
Seam width, described slit width determines the thickness of the film of coating layer.
In the embodiment of the present application, described nozzle 210 is flat-shaped gap nozzle, to improve coating efficiency.
Certainly, described nozzle can also be cylindrical spout or square nozzle, and this is not restricted.
Specifically, described gap nozzle is fluid blowout unit, and described gap nozzle is along described Z-direction
Width consistent with the coating width that described sample needs, edge can be passed through realizing described fluid storage tank 240
One direction once moved coating.
Further, described coating width is consistent with positive pole/negative material coating width, and the change according to width can
To carry out the replacing of the gap nozzle of corresponding width；Gap nozzle at the uniform velocity advances along X-axis or retreats, speed model
Enclose for 1-300mm/s；Slit width is 0.1-500 μm；By gap nozzle come and go can realize many
Layer coating.
In the embodiment of the present application, described nozzle 210 is by transitional fluid district 242 and described fluid storage tank
240 connect；Described transitional fluid district 242 is provided with controllable valve 243, with control described fluent material from
The speed that described nozzle 210 flows out.
Specifically, described fluid storage tank 240 and described transitional fluid district 242 are for described fluent material
Storage and transition；Described controllable valve 243 is arranged at bottom described transitional fluid district 242, can control
Described fluent material from described transitional fluid district 242 to the path switch state of described nozzle 210, and path
Passage opens size.
Further, described nozzle 210 is provided with displacement transducer 211, with monitor described nozzle 210 with
The distance of described sample.
Specifically, institute's displacement sensors 211 monitors described slit width in real time, when described slit
During width deviations setting value, institute's displacement sensors 211 will provide the signal of telecommunication to control parts to described Y-axis
241, thus control the distance of described nozzle 210 and the sample on saddle 201, with to described slit width
It is adjusted.
Based on same inventive concept, the embodiment of the present application additionally provides the device of embodiment two.
Embodiment two
Provide a kind of slot coated device in the present embodiment, as it is shown in figure 1, described device includes:
Horizontal support platform 1；Be fixed with in embodiment one on described horizontal support platform 1 provide coating mechanism 2,
Base material transfer device 3 and film forming calorstat 4；
Wherein, described base material transfer device 3 is positioned at described coating mechanism 2 and described film forming calorstat 4
Between, so that the described sample after coating is transferred to heat in described film forming calorstat 4 film forming.
Owing to coating mechanism 2 being discussed in detail in embodiment one, it is not repeated at this.
First, base material transfer device 3 is introduced.
Described base material transfer device 3 Main Function is to realize the gripping of sample, shift and spin upside down.
In the embodiment of the present application, as shown in figures 1 and 3, described base material transfer device 3 includes:
Transfer base 300, rotatable supporter 301, longitudinally can reduction mechanical arm 302, laterally can reduction machine
Mechanical arm 303 and hold assembly 304；Wherein, described hold assembly 304 pass sequentially through described laterally can reduction
Mechanical arm 303, described longitudinal direction can reduction mechanical arm 302, described rotatable supporter 301 and described transfers
Base 300 is fixed on described horizontal support platform 1, so that described hold assembly 304 can be described rotatable
Under the drive of supporter 301 rotate, described longitudinal direction can reduction mechanical arm 302 and described laterally can reduction machine
Under the drive of mechanical arm 303 along the longitudinal direction with horizontal direction back and forth movement；Wherein, described longitudinal direction and institute
State horizontal direction vertical.
Specifically, described transfer base 300 is arranged on described horizontal support platform 1, to support described base
The miscellaneous part of bottom material transfer device 3；Described rotatable supporter 301 is rotatable is connected to described turning
Moving above base 300, described rotatable supporter 301 can realize relative to described transfer base 300
The rotation of 360 °；Described longitudinal direction can be connected on described rotatable supporter 301 by reduction mechanical arm 302,
Described laterally can reduction mechanical arm 303 be connected to described longitudinal direction can be on reduction mechanical arm 302.Revolve when described
Turn supporter 301 when rotating, by described longitudinal direction can the transmission of reduction mechanical arm 302, drive described laterally
Can rotate by hold assembly 304 on reduction mechanical arm 303, thus realize the transfer of sample.
In the embodiment of the present application, described hold assembly 304 laterally may be used with described by rotary connector 305
Reduction mechanical arm 303 connects, with the rotary sample turn-over that described hold assembly 304 can be driven to clamp, it is achieved
Two sides film forming to sample.
Specifically, being rotatably connected described in that part 305 connects laterally can reduction mechanical arm 303 and hold assembly
304, it can drive hold assembly 304 to realize 360 ° of rotations, and the anglec of rotation can set.
Further, the described each anglec of rotation of rotatable supporter 301 can be set as 180 °；Described can
The each anglec of rotation of rotary connector 305 can be set as 180 °.
Further, described hold assembly 304 is specially pneumatic-finger, to realize the clamping of lossless edge.
In specific implementation process, described pneumatic-finger can have 2, plays the effect of gripping sample, two gas
The spacing starting to refer to is determined along the width of described Z-direction by sample, and concrete gripping mode is as shown in Figure 3.
Certainly, in specific implementation process, described hold assembly can also be the tong mechanically or electrically controlled,
This is not restricted.
Subsequently, film forming calorstat 4 is introduced.
As shown in Figure 1 and Figure 4, described film forming calorstat 4 includes:
Casing 400, described casing 400 is provided with box opening 404；Described base material transfer device 3
By described box opening 404, described sample put into described casing 400；
Incubator saddle 401, is arranged in described casing 400, to support the described sample after placing coating；
Heating plate 402 and the attemperating unit 403 being connected with described heating plate 402, described heating plate 402 He
Described attemperating unit 403 may be contained within described casing 400, to control the temperature within described casing 400.
Specifically, the fluid material layer after the Main Function of described film forming calorstat 4 is for coating is at sample
Upper in-situ preparation film provides stable film-forming temperature.Wherein, described box opening 404 be positioned at casing 400 with
The side that described base material transfer device 3 is adjacent, in order to described base material transfer device 3 put into or
Taking out sample, the size of described box opening 404 can stretch into after need to meeting pneumatic-finger gripping sample；Described
Incubator saddle 401 is for the placement of the sample after the coating that coating mechanism 2 transfer comes, specifically, be coated with
Cloth faces up placement；Described heating plate 402 is positioned on the inner top surface of casing 400, for casing 400 inner loop
Border is heated；It is internal that described attemperating unit 403 is positioned at casing 400, it is possible to monitoring box body 400 temperature in real time；
Heating plate 402 and attemperating unit 403 are with the use of providing a stable film-forming temperature for sample.
Specifically, the temperature set point of described film forming calorstat 4 is 20-200 DEG C.
Based on same inventive concept, present invention also provides the method that the device of embodiment two is corresponding, refer to reality
Execute example three.
Embodiment three
In the present embodiment, it is provided that a kind of membrane preparation method, refer to Fig. 5, Fig. 5 is that the application implements
The block diagram of membrane preparation method in example, described method is applied to the slot coated device described in embodiment two, institute
The method of stating includes:
Step S501, described fluid storage tank 240 is relative under the drive of described moveable support member 202
Move in described saddle 201, and by described nozzle 210 by described fluent material even spread to described torr
On the fixing sample to be coated of platform 201；
Step S502, the described sample after coating is transferred to described film forming by described base material transfer device 3
In calorstat 4；
Step S503, is heated the described sample after coating by described film forming calorstat 4, with at described sample
Product surface filming.
Below as a example by sample two sides film forming, described method is described:
First, described fluid storage tank 240 moves under the drive of described moveable support member 202, will
Described fluent material is by the one side of described nozzle 210 even spread to sample, with the one side of complete paired samples
Coating；
It follows that the sample after single spreading is transferred to film forming calorstat by base material transfer device 3
4, to have heated the one side film forming of sample in film forming calorstat 4；
Subsequently, the sample of one side film forming is transferred to coating mechanism 1 by base material transfer device 3, and
In transfer process by rotary connector 305 complete sample top and bottom overturn, time sample film forming face with
Saddle 201 contacts, non-film forming facing to described nozzle 210；
Then, by the described fluent material another side by described nozzle 210 even spread to sample, with complete
Second topcoating cloth of paired samples；
Subsequently, by base material transfer device 3, the sample completing the second topcoating cloth is transferred to film forming permanent
Incubator 4, to have heated second film forming of sample in film forming calorstat 4；
Finally, it is transferred to next operation.
Below, for the ease of the understanding to the device and method that the application provides, with a kind of polymer Li-ion
The preparation method of battery porous gel dielectric film and the preparation method of a kind of polymer Li-ion battery are
Example, illustrates that the application provides the application of scheme.
The polymer Li-ion battery preparation method of porous gel dielectric film:
First, the process of pole piece: prepare anode slice of lithium ion battery, negative pole according to required form and size
Pole piece, carries out Chemical cleaning to pole piece or physics sweeps powder, it is ensured that pole piece smooth cleaning free from admixture, higher
Temperature is anhydrated, standby.Described pole piece is shaped as rectangle and material coating method is that both sides are left white at least 2cm,
It is left white position and is easy to gripping and reserved lug position；Described pole piece size is determined by battery design size；Pole piece
Being dual coating, positive electrode active materials is cobalt acid lithium, LiMn2O4, LiFePO4, nickel-cobalt-manganese ternary positive pole
Material, one or more mixture of nickel cobalt aluminum tertiary cathode material；Negative active core-shell material is graphite cathode material
Material, lithium titanate, alloy type negative material, transition metal oxide negative material.
It follows that the preparation of gel electrolyte precursor liquid mixture.Gel electrolyte precursor liquid mixture is main
Including lithium salts, plasticizer, functional additive, polymeric matrix, organic solvent, be separated liquid.Preparation stream
Journey: dissolve a polymer in and obtain mixed solution A liquid in organic solvent；Preparation liquid electrolyte B liquid, or
Person buys commercial liquid electrolyte；A, B liquid mix homogeneously is obtained gel electrolyte precursor liquid mixture C；
Employing gel electrolyte precursor liquid mixture can also one-step synthesis.
Subsequently, porous gel dielectric film and pole piece is compound.Described gel electrolyte precursor liquid is mixed
The pole piece matrix processed is carried out two-sided by the slot coated device that thing C is provided by the embodiment of the present application one
Coating, in-situ preparation gel electrolyte membrane, it is thus achieved that gel electrolyte membrane and the complex of pole piece.
The preparation method of polymer Li-ion battery:
First, the preparation of jelly glue polymer battery battery core is carried out.Anode pole piece and cathode pole piece are passed through laser
Die-cutting machine is cut into slices, and obtains meeting the pole piece of design size.
Then, described anode pole piece and cathode pole piece are carried out lamination, tab welding and aluminum plastic film Vacuum Package
Obtaining gelatin polymer battery core, in described anode pole piece and cathode pole piece, at least one is that dual coating is coagulated
The complex of glue electrolyte.
Subsequently, by described battery core through standing, chemical conversion, obtain the gel of molding after degasification, trimming
Polymer Li-ion battery.
In order to the effect of the present embodiment device film forming is described, three batteries is set forth below and prepares example and be prepared as
Product effect:
First example:
First, carrying out the process of pole piece: by lithium cobaltate cathode pole piece, graphite cathode pole piece carries out physics respectively
Sweep powder, high temperature except water.
Then, the preparation of gel electrolyte precursor liquid mixture is carried out: be dissolved in by high molecular polymer PEO
Organic solvent DMA obtains A liquid；Using commercial electrolyte liquid is B liquid；A, B liquid mix homogeneously is obtained
To gel electrolyte precursor liquid mixture C, standby.
Then, with the dual coating gel on the cathode pole piece processed of the slot coated device in embodiment one
Electrolyte precursor liquid mixture, is formed in situ porous gel dielectric film, it is thus achieved that gel electrolyte membrane and pole piece
Negative pole complex.Coating width is consistent with negative material coating width.Gap nozzle is along X-axis from left to right
At the uniform velocity advancing, speed is 5mm/s.Slit width is 200 μm.In base material transfer device, rotatable
The each anglec of rotation of support member is set as 180 °, is rotatably connected each anglec of rotation of part and is set as 180 °.
Film forming calorstat temperature is set as 30 DEG C.
Subsequently, by described lithium cobaltate cathode pole piece with described negative pole complex by after laser die cutting, replace
Lamination is prepared as naked battery core, has welded both positive and negative polarity lug, is placed in the aluminum plastic film rushing shell, with heat sealing machine four
Week seals.
Finally, through chemical conversion, shaping, degasification obtains gel polymer lithium ion battery.
Second example:
First, carrying out the process of pole piece: by lithium cobaltate cathode pole piece, graphite cathode pole piece carries out chemistry respectively
Clean, high temperature removes water.
Then, the preparation of gel electrolyte precursor liquid mixture is carried out: by molten for high molecular polymer PMMA
A liquid is obtained in organic solvent DMF；Preparation 1mol/L lithium hexafluoro phosphate LiPF6, solvent be DMC,
DEC, EC volume ratio is 1:1:1, for B liquid；A, B liquid mix homogeneously is obtained gel electrolyte
Precursor liquid mixture C, standby.
Then, with the dual coating gel on the anode pole piece processed of the slot coated device in embodiment one
Electrolyte precursor liquid mixture, is formed in situ porous gel dielectric film, it is thus achieved that gel electrolyte membrane and pole piece
Positive pole complex.Coating width is consistent with positive electrode coating width.Gap nozzle is along X-axis from left to right
At the uniform velocity advancing, speed is 10mm/s.Slit width is 100 μm.In base material transfer device, can revolve
Turn each anglec of rotation of support member and be set as 180 °, be rotatably connected each anglec of rotation of part and be set as
180°.Film forming calorstat temperature is set as 40 DEG C.
Subsequently, by described graphite cathode pole piece with described positive pole complex by after laser die cutting, the most folded
Sheet is prepared as naked battery core, has welded both positive and negative polarity lug, is placed in the aluminum plastic film rushing shell, uses heat sealing machine surrounding
Seal.
Finally, through chemical conversion, shaping, degasification obtains gel polymer lithium ion battery.
3rd example:
First, carrying out the process of pole piece: by lithium cobaltate cathode pole piece, graphite cathode pole piece carries out chemistry respectively
Clean, high temperature removes water.
Then, the preparation of gel electrolyte precursor liquid mixture is carried out.Macromolecule PVDF is dissolved in organic molten
Agent tetrahydrofuran THF obtains A liquid；The bis trifluoromethyl sulfimidic acid lithium LiTFSI of preparation 1mol/L,
Solvent be DMC, DEC, EC volume ratio be 1:1:1, for B liquid；A, B liquid mix homogeneously is obtained
To organosol polymeric electrolyte C, standby.
Then, with the dual coating gel on the cathode pole piece processed of the slot coated device in embodiment one
Electrolyte precursor liquid mixture, is formed in situ porous gel dielectric film, it is thus achieved that gel electrolyte membrane and pole piece
Negative pole complex.Coating width is consistent with negative material coating width.Gap nozzle is along X-axis from left to right
At the uniform velocity advancing, speed is 50mm/s.Slit width is 80 μm.In base material transfer device, rotatable
The each anglec of rotation of support member is set as 180 °, is rotatably connected each anglec of rotation of part and is set as 180 °.
Film forming calorstat temperature is set as 50 DEG C.
Then, repeat the above steps completes the coating of anode pole piece, it is thus achieved that dual coating gel electrolyte membrane
Positive pole complex.
It follows that after described negative pole complex is passed through laser die cutting with described positive pole complex, alternately lamination
It is prepared as naked battery core, has welded both positive and negative polarity lug, be placed in the aluminum plastic film rushing shell, careful with heat sealing machine four
Envelope.
Finally, through chemical conversion, shaping, degasification obtains gel polymer lithium ion battery.
The battery preparing above three example detects, and contrasts gel polymer electrolyte film thickness, hole
Gap rate and performance of lithium ion battery testing result are as shown in table 1.
Concrete method of testing is: capability retention is tested: the lithium ion battery prepared by three examples is at room temperature
Under with 2C constant-current charge to blanking voltage 4.2V, then constant-voltage charge to electric current is 0.05C, stands 30min
Again with 0.5C constant-current discharge, the discharge cut-off voltage of lithium ion battery is 3V；Stand 30min again, lithium from
Sub-battery carries out 500 cycle charge discharge electrical testings in a manner described.
Wherein, the capability retention (%) in N week=[electric discharge of discharge capacity/the first week in N week is held
Amount] * 100%.
Table 1
As seen from Table 1, the parameter index of lithium ion battery prepared by the method and device that the application provides and property
Can all meet the requirements.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage:
The device and method that the embodiment of the present application provides, the moveable support member arranging coating mechanism drives stream
Body hold-up tank moves, thus by nozzle by the fluent material even spread in fluid storage tank to sample,
Achieve the in-situ preparation of film, on the one hand, the fluent materials such as gel polymer electrolyte component can be reduced and exist
Movement on pole piece, strengthens the wellability of positive/negative plate matrix, improves the interface phase of gel electrolyte and electrode
Capacitive, is conducive to reducing interface resistance, improves cyclical stability and high rate performance；On the other hand, eliminate
Conventional lithium ion battery winding barrier film, the technological process of fluid injection and matching unit, cost-effective, improve and produce
Efficiency；Another further aspect, by the control of transfer device, it is possible to achieve coating film forming is fast with upstream and downstream operation
Speed connects, and this apparatus structure is simple, low cost, it is easy to large-scale production.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a coating mechanism, it is characterised in that described coating mechanism includes:
The fluid storage tank of base, saddle, moveable support member and band nozzle；Described saddle and described can
Mobile support member is each attached on described base；Wherein, described fluid storage tank is fixed on described removable
In support member, to move relative to described saddle under the drive of described moveable support member；Wherein,
During described fluid storage tank moves, the fluent material in described fluid storage tank passes through described nozzle
It is applied to direct formation of film at surface on the sample to be coated that described saddle is fixing.
2. coating mechanism as claimed in claim 1, it is characterised in that described moveable support member bag
Include:
X-axis movable support member and X-axis control parts, described X-axis movable support member and described X-axis
Control parts to connect, to reciprocate along X-direction under the control of described X-axis control parts；
Z axis movable support member and Z axis control parts, described Z axis movable support member and described Z axis control
Parts processed connect, to reciprocate along Z-direction under the control of described Z axis control parts；
Y-axis controls parts, and described Y-axis controls parts and is connected with described fluid storage tank, to control described stream
Body hold-up tank reciprocates along Y direction；
Wherein, described fluid storage tank is connected with described Z axis movable support member, and can by described Z axis
Moveable support is connected with described X-axis movable support member, so that described fluid storage tank can be along described X
Direction of principal axis, described Y direction and described Z-direction reciprocate；Wherein, described X-direction, institute
State Y direction and described Z-direction is the most vertical.
3. coating mechanism as claimed in claim 1, it is characterised in that described nozzle is flat-shaped slit
Nozzle.
4. coating mechanism as claimed in claim 1, it is characterised in that described nozzle passes through transitional fluid
District is connected with described fluid storage tank；Described transitional fluid district is provided with controllable valve, to control described fluid
The speed that material flows out from described nozzle.
5. coating mechanism as claimed in claim 1, it is characterised in that be provided with displacement on described nozzle
Sensor, to monitor the distance of described nozzle and described sample to be coated.
6. a slot coated device, it is characterised in that described device includes:
Horizontal support platform, described horizontal support platform is fixed with the arbitrary described coating mechanism of claim 1-5,
Base material transfer device and film forming calorstat；
Wherein, described base material transfer device between described coating mechanism and described film forming calorstat,
Transfer to described film forming calorstat heats film forming with the described sample after being coated with by described coating mechanism.
7. device as claimed in claim 6, it is characterised in that described base material transfer device includes:
Transfer base, rotatable supporter, longitudinally can reduction mechanical arm, laterally can reduction mechanical arm and clamping
Parts；Wherein, described hold assembly pass sequentially through described laterally can reduction mechanical arm, described longitudinal direction can reduction
Mechanical arm, described rotatable supporter and described transfer base are fixed on described horizontal support platform, so that institute
State hold assembly to rotate under the drive of described rotatable supporter, described longitudinal direction can reduction mechanical arm and
Described laterally can under the drive of reduction mechanical arm along the longitudinal direction with horizontal direction back and forth movement；Wherein, described
Longitudinal direction is vertical with described horizontal direction.
8. device as claimed in claim 7, it is characterised in that described hold assembly is by being rotatably connected
Part laterally can be connected by reduction mechanical arm with described, with the described rotary sample that described hold assembly can be driven to clamp
Turn-over.
9. device as claimed in claim 6, it is characterised in that described film forming calorstat includes:
Casing, described casing is provided with box opening；Described base material transfer device passes through described casing
Described sample is put into described casing by opening；
Incubator saddle, is arranged in described casing, to support the described sample after placing coating；
Heating plate and the attemperating unit being connected with described heating plate, described heating plate and described attemperating unit are all provided with
It is placed in described casing, to control the temperature of described box house.
10. a membrane preparation method, it is characterised in that described method is applied to the arbitrary institute of claim 6-9
The slot coated device stated, described method includes:
Described fluid storage tank moves relative to described saddle under the drive of described moveable support member, and
By described nozzle by sample to be coated fixing for described fluent material even spread to described saddle；
Described sample after coating is transferred in described film forming calorstat by described base material transfer device；
By described film forming calorstat, the described sample after coating is heated, with in described sample surfaces film forming.
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| CN109847977A (en) * | 2019-02-15 | 2019-06-07 | 广东顺德德力印刷机械有限公司 | Coating equipment is used in a kind of production of lithium ion battery |
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| CN114602324A (en) * | 2022-02-18 | 2022-06-10 | 中国科学院水生生物研究所 | Clamping type filter membrane replacing system for environmental DNA sampling |
| CN114602326A (en) * | 2022-02-21 | 2022-06-10 | 中国科学院水生生物研究所 | Lifting type filter membrane replacing device for environmental DNA sampling |
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Effective date of registration: 20200820 Address after: 034000 northeast corner of Yuwang road and Xueyuan street, Xinzhou Development Zone, Shanxi Province Patentee after: Shanxi Nengji Intelligent Technology Co.,Ltd. Address before: 611743, 839, Tian Qin Road, Chengdu hi tech Zone (West District, Sichuan) Patentee before: Interstellar Solid-State Li-ion Batteries Technology (Chengdu) Co.,Ltd. |