CN108288725A - A kind of preparation method of high-temperature flexible battery - Google Patents
A kind of preparation method of high-temperature flexible battery Download PDFInfo
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- CN108288725A CN108288725A CN201810067513.2A CN201810067513A CN108288725A CN 108288725 A CN108288725 A CN 108288725A CN 201810067513 A CN201810067513 A CN 201810067513A CN 108288725 A CN108288725 A CN 108288725A
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
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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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to electrochemical technology fields, provide a kind of preparation method of high-temperature flexible battery, including six steps of S1 S6.A kind of preparation method of high-temperature flexible battery of the present invention, produces encapsulating film using the heat-insulated alloy film layer of multiple dense, the high temperature resistance of battery can be improved；By the way that electrode diaphragm to be prepared into the shape with multiple first windows and multiple second windows, when it is attached on foil, several white spaces can be exposed on foil, the flexible battery being prepared is during bending, stress can be discharged by these white spaces, so that electrode diaphragm will not fracture during bending and be damaged, to extend the service life of flexible battery.
Description
Technical field
The present invention relates to electrochemical technology field, specially a kind of preparation method of high-temperature flexible battery.
Background technology
With the fast development of electronic technology, more and more electronic equipments are towards lightening and flexibility direction
Developed, such as Samsung and LG are proposed the screen of oneself flexible foldable, and is planning to release folding
The products such as mobile phone, display module and circuit can all realize flexible and foldable that maximum challenge at present is exactly that can fold at present
Accumulation power supply product, the products such as traditional lithium ion battery, ultracapacitor, not only volume is heavy, but also can not fold,
When volume change is excessive, generation short circuit between positive and negative anodes is resulted even in, causes thermal runaway, leads to serious safety problem.
Therefore in order to adapt to the development of next-generation flexible electronic devices, the developing direction of lithium ion battery also should be towards flexible, foldable
Direction developed.Therefore, research and development one kind can bend, squeeze, and self-discharge rate is small, safe flexible lithium-ion electric
Pond has important practical significance.
In recent years, with the rapid advances of electronic technology, more and more electronic equipments are towards lightening, flexibility
Develop with wearable direction, the new concept flexible electrical philosophical works especially occurred in recent years or flexible mobile phone.Flexible battery is made
For the critical component of novel flexible electronic equipment, get growing concern for.
However, existing flexible battery high temperature resistance is poor, when flexible battery fever is severe or by external high temperature, hold
It is fragile.On the other hand, existing flexible battery is during bending, since fold occurs for aluminum plastic film and then causes in battery core
The pole piece stress in face, which must not obtain to discharge, to be occurred fold and pole piece is made to be broken, so as to cause scrapping for battery.
Invention content
The purpose of the present invention is to provide a kind of preparation methods of high-temperature flexible battery, can at least solve the prior art
In segmental defect.
To achieve the above object, the embodiment of the present invention provides the following technical solutions：A kind of preparation of high-temperature flexible battery
Method includes the following steps：
Conductive agent is added to active material in solvent and mixes by S1, suspension is obtained after stirring, while taking substrate, and
Dispersion in another solvent is placed it in, dispersion liquid is obtained；
The suspension and the dispersion liquid are placed in agitator tank, slurry are obtained after stirring by S2；
S3 is filtered the slurry of acquisition using filter paper, waits for the filtrate thickness on filter paper up to 30~400 μm
When, stop filtering, and the filtrate on filter paper and filter paper is dried；
S4 removes the filtrate after drying from filter paper, by roll-in, obtains electrode diaphragm；
Obtained electrode diaphragm is attached on foil by S5, encapsulates to form battery core using encapsulating film, on the encapsulating film plating every
Hotting mask, specifically, aluminium, gold, copper and silver to be made up to the heat-insulated alloy of multiple dense of vacuum evaporating or magnetron sputtering technique
Film is simultaneously attached on encapsulating film；
S6 prepares high-temperature flexible battery using the battery core.
Further, in the S3 steps, the slurry of acquisition is filtered using the filter paper of strip, is being filtered
Before, first handle filter paper, the filter paper is equipped at least one first window and at least one second window, the first window and
Second window is distributed in the width direction of the filter paper, is opened in the edge of the filter paper and has in the edge
Jagged, the filter paper is enclosed construction, and along the width direction of the filter paper, the first window and second window are located at
On straight line, the first window and second window that are located on straight line are a row, along the length of the filter paper
Directional spreding has multiple row, is then filtered again by the filter paper, you can obtains having multiple first windows and multiple second windows
Electrode diaphragm；The aperture of the filter paper is between 0.1~70 μm.
Further, along the width direction of the filter paper, there are two first windows, and there are one the second windows, second window
Mouth is located between two first windows.
Further, the encapsulating film covers copper or aluminum plastic film using PI films.
Further, in the S1 steps, the active material is divided into positive electrode active materials and negative electrode active material, can be obtained
Positive diaphragm and cathode membrane, two kinds of diaphragms are attached to two opposite faces of the foil respectively；The positive electrode active materials are described
Negative electrode active material quality accounting in the electrode diaphragm prepared is 65%-99.7%.
Further, the positive electrode active materials are cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate or lithium vanadate；
The negative electrode active material is graphite, lithium titanate, MCMB, carbon silicon or activated carbon.
Further, in the S1 steps, the conductive agent is carbon nanotube, conductive black, KS-6, Ketjen black or graphite
Alkene, and conductive agent quality accounting in the electrode diaphragm prepared is 0.2%-20%.
Further, in the S3 steps, the filter type of use is specially vacuum filter or high pressure press filtration.
Further, in the S3 steps, the temperature of drying is between 100~130 DEG C, and baking time is between 4~8h.
Further, in the S1 steps, the solvent is water, ethyl alcohol, ethylene glycol, propyl alcohol, N-Methyl pyrrolidone, isopropyl
Alcohol or acetone.
Compared with prior art, the beneficial effects of the invention are as follows：
1, encapsulating film is produced using the heat-insulated alloy film layer of multiple dense, the high temperature resistance of battery can be improved.
2, by the way that electrode diaphragm is prepared into the shape with multiple first windows and multiple second windows, when it is attached to foil
When on material, several white spaces can be exposed on foil, the flexible battery being prepared can pass through during bending
These white spaces discharge stress so that electrode diaphragm will not fracture during bending and be damaged, to extend flexible battery
Service life.
Description of the drawings
Fig. 1 is a kind of step flow chart of the preparation method of high-temperature flexible battery provided in an embodiment of the present invention；
Fig. 2 is that electrode diaphragm prepared by a kind of preparation method of high-temperature flexible battery provided in an embodiment of the present invention is attached to
Schematic diagram on foil.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
It please refers to Fig.1 and Fig. 2, the embodiment of the present invention provides a kind of preparation method of high-temperature flexible battery, including is as follows
Step：Conductive agent is added to active material in solvent and mixes by S1, suspension is obtained after stirring, while taking substrate, and by its
It is placed in dispersion in another solvent, obtains dispersion liquid；The suspension and the dispersion liquid are placed in agitator tank by S2, stirring
After obtain slurry；S3 is filtered the slurry of acquisition using filter paper, waits for filtrate thickness on filter paper up to 30~400 μ
When m, stop filtering, and the filtrate on filter paper and filter paper is dried；S4 removes the filtrate after drying from filter paper,
By roll-in, electrode diaphragm 3 is obtained；Obtained electrode diaphragm 3 is attached on foil, is encapsulated to form battery core using encapsulating film by S5,
Thermal isolation film is plated on the encapsulating film, specifically, aluminium, gold, copper and silver is made up of vacuum evaporating or magnetron sputtering technique more
The fine and close heat-insulated alloy film of layer is simultaneously attached on encapsulating film, specifically, by vacuum evaporating or magnetron sputtering technique by aluminium, gold,
Copper and silver are made the heat-insulated alloy film of multiple dense and are attached on encapsulating film；It is soft to prepare high temperature resistant using the battery core by S6
Property battery.Encapsulating film is produced by using the heat-insulated alloy film layer of multiple dense, the high temperature resistance of battery can be improved.
In the above-described embodiments, on the one hand, conductive agent is carbon nanotube, conductive black, KS-6 (graphite), Ketjen black or stone
Black alkene, and conductive agent quality accounting in the electrode diaphragm 3 prepared is 0.2%-20%, active material is divided into positive work
Property material and negative electrode active material, can be obtained positive diaphragm and cathode membrane, two kinds of diaphragms are attached to the two-phase of the foil respectively
Opposite；The positive electrode active materials or the negative electrode active material quality accounting in the electrode diaphragm 3 prepared are 65%-
99.7%, solvent is water, ethyl alcohol, ethylene glycol, propyl alcohol, N-Methyl pyrrolidone, isopropanol or acetone.Three kinds of material mixings are existed
After together, by high speed dispersion, suspension is obtained.On the other hand, substrate high speed dispersion in a solvent is taken, forming dispersion concentration is
The dispersion liquid of 0.5mg/ml-3mg/ml, substrate select natural nanometer or artificial synthesized nano-cellulose, it is being prepared
Electrode diaphragm 3 in quality accounting be 0.1%-15%.
Said program is advanced optimized, active material is divided into positive electrode active materials and negative electrode active material, and anode can be obtained
Diaphragm and cathode membrane, two kinds of diaphragms are attached to two opposite faces of the foil respectively；The positive electrode active materials or the cathode
Active material quality accounting in the electrode diaphragm 3 prepared is 65%-99.7%.Wherein, positive electrode active materials be cobalt acid lithium,
LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate or lithium vanadate；The negative electrode active material is graphite, the lithium titanate, (centres MCMB
Phase carbosphere), carbon silicon or activated carbon.
As the prioritization scheme of the embodiment of the present invention, in S3 steps, using the filter paper of strip to the slurry of acquisition
Material is filtered, and before filtration, first handles filter paper, the filter paper is equipped at least one first window 1 and at least one second
Window 2, the first window 1 and second window 2 are distributed in the width direction of the filter paper, are opened in the filter paper
Edge and in the edge have notch, the filter paper be enclosed construction, along the width direction of the filter paper, described first
Window 1 and second window 2 are located on straight line, are located at the first window 1 on straight line and second window
Mouth 2 is a row, and multiple row is distributed with along the length direction of the filter paper, is then filtered again by the filter paper, you can obtains having more
The electrode diaphragm 3 of a first window 1 and multiple second windows 2；The aperture of the filter paper is between 0.1~70 μm.By will be electric
Pole diaphragm 3 is prepared into the shape with multiple first windows 1 and multiple second windows 2, can be in foil when it is attached on foil
Upper several white spaces of exposing, the flexible battery being prepared can be released during bending by these white spaces
Put stress so that electrode diaphragm 3 will not fracture during bending and be damaged, to extend the service life of flexible battery.
As the prioritization scheme of the embodiment of the present invention, as shown in Fig. 2, in S3 steps, in the width direction of the filter paper
There are two the first windows 1 opened up, and there are one the second windows 2, and second window 2 is located between two first windows 1,
And apart from one another by setting.The size of the distance at interval, the size of first window 1 and the second window 2 can be according to practical feelings
Condition controls, than in the prior art by the conductive capability of the white space in entire width direction stronger, entire battery
Energy density higher, and the effect of stress when release is bent is had both again.
As the prioritization scheme of the embodiment of the present invention, encapsulating film covers copper or aluminum plastic film using PI films (Kapton).
As the prioritization scheme of the embodiment of the present invention, in S3 steps, the filter type of use be specially vacuum filter or
High pressure press filtration.The temperature of drying is between 100~130 DEG C, and baking time is between 4~8h.It is thin pole piece can preferably to be obtained
Film.
As the prioritization scheme of the embodiment of the present invention, in S2 steps, the time stirred in agitator tank is 15~45 points
Clock.
As the prioritization scheme of the embodiment of the present invention, the foil that the present invention uses can be different shape, including rectangular
Shape, square or circle.In S5 steps, when pasting electrode diaphragm 3, cathode membrane will all cover positive diaphragm, to ensure
In bending process, normal use eliminates safe hidden trouble battery.In addition, the flexible battery of finished product can use lamination or winding
Mode carry out.
It is specific embodiments of the present invention below：
Embodiment 1：The carbon nanometer that mass fraction is 4% and the cobalt acid lithium particle that mass fraction is 90% is taken to be blended in isopropyl
In alcoholic solvent, high-speed stirred 5min prepares the suspension of conductive agent and active material；Then it is 6% nanometer to take mass fraction
Isopropanol high-speed stirred 10min is added in cellulose, forms dispersion liquid, and dispersion liquid and the suspension prepared are added to agitator tank
In, high-speed stirred 15min is prepared into slurry；It is that 0.2 micrometer fibers element filter paper carries out vacuum mistake that slurry, which is poured into pore size,
Filter, after filtrate is all drained, filter paper and filtered deposit are removed together, and dries, and drying temperature is 100 DEG C, is dried
Dry time 1h removes deposit, vacuum bakeout 3h at 130 DEG C after filter paper drying from filter paper, and by 50MP pressure
Roll-in is to get to the positive diaphragm for flexible battery.
The cathode membrane of flexible battery is prepared for same method.Before filtration, as shown in Fig. 2, need to be carried out to filter paper
Processing, opens up two first windows 1 and second window 2, two first windows 1 are along filter paper in the width direction of filter paper
Edge opens up, and the second window 2 is located between two first windows 1, and three is point-blank, then along the length side of filter paper
To multiple first windows 1 and multiple second windows 2 are distributed with.The obtained pole piece film just has multiple white spaces.This
The size of a little white spaces is 1.7cm*0.4cm.Both pole piece films are finally attached to two opposite faces of foil respectively, are led to
It crosses after encapsulating film encapsulation and obtains the batteries of multiple strips, battery length and width are 10cm*3cm, and it is battery 1 to electricity that note battery, which is numbered,
Pond 3.Bend test is carried out to this 3 batteries, the capacity after test is bent 100 times, 300 times, 700 times and 1000 times is kept,
As shown in following table one.The bending of battery is in R=25mm.
Table one
Embodiment 2：The carbon nanometer that mass fraction is 4% and the nickle cobalt lithium manganate particle that mass fraction is 89% is taken to be blended in
In aqueous solvent, high-speed stirred 8min prepares the suspension of conductive agent and active material；Then it is 7% nanometer to take mass fraction
Isopropanol high-speed stirred 12min is added in cellulose, forms dispersion liquid, and dispersion liquid and the suspension prepared are added to agitator tank
In, high-speed stirred 10min is prepared into slurry；It is that 0.3 micrometer fibers element filter paper carries out vacuum mistake that slurry, which is poured into pore size,
Filter, after filtrate is all drained, filter paper and filtered deposit are removed together, and dries, and drying temperature is 110 DEG C, is dried
Dry time 2h removes deposit, vacuum bakeout 4h at 120 DEG C after filter paper drying from filter paper, and by 50MP pressure
Roll-in is to get to the positive diaphragm for flexible battery.
The cathode membrane of flexible battery is prepared for same method.Before filtration, as shown in Fig. 2, need to be carried out to filter paper
Processing, opens up two first windows 1 and second window 2, two first windows 1 are along filter paper in the width direction of filter paper
Edge opens up, and the second window 2 is located between two first windows 1, and three is point-blank, then along the length side of filter paper
To multiple first windows 1 and multiple second windows 2 are distributed with.The obtained pole piece film just has multiple white spaces.This
The size of a little white spaces is 1.7cm*0.8cm.Both pole piece films are finally attached to two opposite faces of foil respectively, are led to
It crosses after encapsulating film encapsulation and obtains the batteries of multiple strips, battery length and width are 12cm*3cm, and it is battery 4 to electricity that note battery, which is numbered,
Pond 6.Bend test is carried out to this 3 batteries, the capacity after test is bent 100 times, 300 times, 700 times and 1000 times is kept,
As shown in following table two.The bending of battery is in R=25mm.
Embodiment 3：The carbon nanometer that mass fraction is 3% and the nickle cobalt lithium manganate particle that mass fraction is 92% is taken to be blended in
In aqueous solvent, high-speed stirred 5min prepares the suspension of conductive agent and active material；Then it is 5% nanometer to take mass fraction
Isopropanol high-speed stirred 15min is added in cellulose, forms dispersion liquid, and dispersion liquid and the suspension prepared are added to agitator tank
In, high-speed stirred 6min is prepared into slurry；It is that 0.2 micrometer fibers element filter paper carries out vacuum filter that slurry, which is poured into pore size,
After filtrate is all drained, filter paper and filtered deposit are removed together, and dries, drying temperature is 100 DEG C, when drying
Between 1h, after filter paper drying after, deposit is removed from filter paper, vacuum bakeout 5h at 130 DEG C, and by 50MP pressure roller
Pressure is to get to the positive diaphragm for flexible battery.
The cathode membrane of flexible battery is prepared for same method.Before filtration, as shown in Fig. 2, need to be carried out to filter paper
Processing, opens up two first windows 1 and second window 2, two first windows 1 are along filter paper in the width direction of filter paper
Edge opens up, and the second window 2 is located between two first windows 1, and three is point-blank, then along the length side of filter paper
To multiple first windows 1 and multiple second windows 2 are distributed with.The obtained pole piece film just has multiple white spaces.This
The size of a little white spaces is 1.7cm*0.8cm.Both pole piece films are finally attached to two opposite faces of foil respectively, are led to
It crosses after encapsulating film encapsulation and obtains the batteries of multiple strips, battery length and width are 16cm*3cm, and it is battery 7 to electricity that note battery, which is numbered,
Pond 9.Bend test is carried out to this 3 batteries, the capacity after test is bent 100 times, 300 times, 700 times and 1000 times is kept,
As shown in following table two.The bending of battery is in R=25mm..
Embodiment 4：The carbon nanometer that mass fraction is 6% and the nickle cobalt lithium manganate particle that mass fraction is 85% is taken to be blended in
In aqueous solvent, high-speed stirred 6min prepares the suspension of conductive agent and active material；Then it is 6% nanometer to take mass fraction
Isopropanol high-speed stirred 11min is added in cellulose, forms dispersion liquid, and dispersion liquid and the suspension prepared are added to agitator tank
In, high-speed stirred 10min is prepared into slurry；It is that 0.3 micrometer fibers element filter paper carries out vacuum mistake that slurry, which is poured into pore size,
Filter, after filtrate is all drained, filter paper and filtered deposit are removed together, and dries, and drying temperature is 90 DEG C, drying
Time 3h removes deposit, vacuum bakeout 2h at 140 DEG C after filter paper drying from filter paper, and by the roller of 50MP pressure
Pressure is to get to the positive diaphragm for flexible battery.
The cathode membrane of flexible battery is prepared for same method.Before filtration, as shown in Fig. 2, need to be carried out to filter paper
Processing, opens up two first windows 1 and second window 2, two first windows 1 are along filter paper in the width direction of filter paper
Edge opens up, and the second window 2 is located between two first windows 1, and three is point-blank, then along the length side of filter paper
To multiple first windows 1 and multiple second windows 2 are distributed with.The obtained pole piece film just has multiple white spaces.This
The size of a little white spaces is 1.7cm*0.8cm.Both pole piece films are finally attached to two opposite faces of foil respectively, are led to
Cross after encapsulating film encapsulation and obtain the batteries of multiple strips, battery length and width are 20cm*3cm, note battery is numbered be battery 10 to
Battery 12.Bend test is carried out to this 3 batteries, the capacity after test is bent 100 times, 300 times, 700 times and 1000 times is protected
It holds, as shown in following table two.The bending of battery is in R=25mm.
Table two
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of preparation method of high-temperature flexible battery, which is characterized in that include the following steps：
Conductive agent is added to active material in solvent and mixes by S1, suspension is obtained after stirring, while taking substrate, and by its
It is placed in dispersion in another solvent, obtains dispersion liquid；
The suspension and the dispersion liquid are placed in agitator tank, slurry are obtained after stirring by S2；
S3 is filtered the slurry of acquisition using filter paper, when the filtrate thickness on filter paper is up to 30~400 μm, stops
It only filters, and the filtrate on filter paper and filter paper is dried；
S4 removes the filtrate after drying from filter paper, by roll-in, obtains electrode diaphragm；
Obtained electrode diaphragm is attached on foil by S5, encapsulates to form battery core using encapsulating film, is plated on the encapsulating film heat-insulated
Film, specifically, aluminium, gold, copper and silver to be made up to the heat-insulated alloy film of multiple dense of vacuum evaporating or magnetron sputtering technique
And it is attached on encapsulating film；
S6 prepares high-temperature flexible battery using the battery core.
2. a kind of preparation method of high-temperature flexible battery as described in claim 1, it is characterised in that：In the S3 steps
In, the slurry of acquisition is filtered using the filter paper of strip, before filtration, filter paper is first handled, is set on the filter paper
There are at least one first window and at least one second window, the first window and second window to be distributed in the filter
In the width direction of paper, it is enclosed construction to be opened in the edge of the filter paper and have notch, the filter paper in the edge,
Along the width direction of the filter paper, the first window and second window are located on straight line, are located on straight line
The first window and second window be one row, multiple row is distributed with along the length direction of the filter paper, then passes through again
The filter paper filters, you can obtains the electrode diaphragm with multiple first windows and multiple second windows；The aperture of the filter paper exists
Between 0.1~70 μm.
3. a kind of preparation method of high-temperature flexible battery as claimed in claim 2, which is characterized in that along the width of the filter paper
Direction is spent, there are two first windows, and there are one the second windows, and second window is located between two first windows.
4. a kind of preparation method of high-temperature flexible battery as described in claim 1, it is characterised in that：The encapsulating film uses
PI films cover copper or aluminum plastic film.
5. a kind of preparation method of high-temperature flexible battery as described in claim 1, it is characterised in that：In the S1 steps,
The active material is divided into positive electrode active materials and negative electrode active material, and positive diaphragm and cathode membrane, two kinds of diaphragms can be obtained
It is attached to two opposite faces of the foil respectively；The positive electrode active materials or the negative electrode active material are in the electrode film prepared
Quality accounting is 65%-99.7% in piece.
6. a kind of preparation method of high-temperature flexible battery as claimed in claim 5, it is characterised in that：The positive-active material
Material is cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate or lithium vanadate；The negative electrode active material is graphite, metatitanic acid
Lithium, MCMB, carbon silicon or activated carbon.
7. a kind of preparation method of high-temperature flexible battery as described in claim 1, which is characterized in that in the S1 steps,
The conductive agent is carbon nanotube, conductive black, KS-6, Ketjen black or graphene, and the conductive agent is in the electrode prepared
Quality accounting is 0.2%-20% in diaphragm.
8. a kind of preparation method of high-temperature flexible battery as described in claim 1, it is characterised in that：In the S3 steps,
The filter type of use is specially vacuum filter or high pressure press filtration.
9. a kind of preparation method of high-temperature flexible battery as described in claim 1, it is characterised in that：In the S3 steps,
The temperature of drying is between 100~130 DEG C, and baking time is between 4~8h.
10. a kind of preparation method of high-temperature flexible battery as described in claim 1, it is characterised in that：In the S1 steps,
The solvent is water, ethyl alcohol, ethylene glycol, propyl alcohol, N-Methyl pyrrolidone, isopropanol or acetone.
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| CN201810067513.2A CN108288725B (en) | 2018-01-24 | 2018-01-24 | Preparation method of high-temperature-resistant flexible battery |
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|---|---|---|---|
| CN201810067513.2A CN108288725B (en) | 2018-01-24 | 2018-01-24 | Preparation method of high-temperature-resistant flexible battery |
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| CN102037584A (en) * | 2008-05-22 | 2011-04-27 | 松下电器产业株式会社 | Electrode group for secondary battery and secondary battery using the same |
| US20160260945A1 (en) * | 2011-12-29 | 2016-09-08 | Apple Inc. | Flexible battery pack |
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| CN103682410A (en) * | 2013-12-23 | 2014-03-26 | 宁德新能源科技有限公司 | Flexible battery pack |
| CN105633343A (en) * | 2015-12-31 | 2016-06-01 | 武汉艾特米克超能新材料科技有限公司 | Flexible lithium ion battery electrode plate with self supporting capability and preparation method thereof |
| CN106531902A (en) * | 2016-11-16 | 2017-03-22 | 广州宏庆电子有限公司 | Extremely-thin flexible heat-radiation film and method for manufacturing the same |
| CN206758487U (en) * | 2017-02-28 | 2017-12-15 | 扬州增润电器有限公司 | Novel lithium battery aluminium section bar shell |
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