CN104577011A - Reinforcing material for battery diaphragm - Google Patents
Reinforcing material for battery diaphragm Download PDFInfo
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- CN104577011A CN104577011A CN201410826772.0A CN201410826772A CN104577011A CN 104577011 A CN104577011 A CN 104577011A CN 201410826772 A CN201410826772 A CN 201410826772A CN 104577011 A CN104577011 A CN 104577011A
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- reinforcing material
- battery diaphragm
- fibrid
- fiber
- diaphragm reinforcing
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/44—Fibrous material
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Cell Separators (AREA)
Abstract
The invention provides a reinforcing material for a battery diaphragm. The reinforcing material consists of the following components in percentage by weight: 30%-95% of an aramid chopped fiber and 5%-70% of an aramid precipitation fiber, wherein the aramid chopped fiber is an aramid 1313 fiber or an aramid 1414 fiber, the length is 6+/-3 mm, and the fiber number is 1.2-3.2dtex; the aramid precipitation fiber is an aramid 1313 precipitation fiber or an aramid 1414 precipitation fiber, and the beating degree is 20-85 beating degrees. The reinforcing material disclosed by the invention can be used between the various battery diaphragms, and compared with a traditional plastic battery diaphragm solely used, the temperature resistant property and the chemical stabilization of the battery diaphragm prepared from the reinforcing material are both improved.
Description
Technical field
The present invention relates to ion battery field, be specifically related to the barrier film reinforcing material of ion battery.
Background technology
From early 1990s, since Sony (SONY) company successfully develops lithium battery, lithium ion battery is high with its energy density, service life cycle is long and the electrical property of the high excellence of voltage and obtaining develops rapidly.Be widely used in the electronics field such as mobile phone, portable computer, camera, video camera at present, and the field of application is still among constantly expanding.Lithium ion battery is made up of both positive and negative polarity, electrolyte and barrier film.Wherein, battery diaphragm refers to one deck diaphragm material between anode and negative pole, it is part very crucial in battery, have a direct impact battery security and cost, its Main Function is: isolation positive and negative electrode also makes it directly to contact, and allows the ion in electrolyte solution freely pass through between both positive and negative polarity.The ionic conduction ability of battery diaphragm is directly connected to the overall performance of battery; the effect of its isolation positive and negative electrode makes the rising of battery energy Limited Current when overcharging or temperature raises; prevent battery short circuit from setting off an explosion; there is the self-closing protective effect of micropore, battery user and equipment are played to the effect of safeguard protection.
At present, the preparation method of barrier film microporous barrier is divided into dry method (fusion drawn, MSCS) and wet method (Thermal inactive, TIPS) two kinds of technology.Above-mentioned two kinds of material of preparing are the polyolefin plastics such as polyethylene, polypropylene, its thermal endurance is poor, have a strong impact on the application of battery diaphragm in field widely, along with the development of the high capacity cells such as lithium-ion-power cell, the temperature tolerance of commercialization polyalkene diaphragm and the limitation of gas permeability form significant threat to the security performance of battery.Describe a kind of with the battery diaphragm of aramid fiber superbhort fiber (< 1.5mm) and fibrid composition and production method thereof in patent 201010204780.3 " battery diaphragm based on aramid fiber ", but due to quantitative and thickness is all higher, because which limit its application.It take aromatic polysulfonamide as the battery diaphragm of matrix that patent 201210425855.X " a kind of high-temperature resistant aromatic polysulfonamide base lithium ion battery diaphragm " describes a kind of, but due to the production method it using Static Spinning, its suitability for industrialized production is restricted.It take PPTA as the battery diaphragm of main material that patent 201410372541.7 " the heavy-duty battery barrier film that aramid fiber is formed " describes a kind of, but which are added the materials such as pyridine, ester class, potassium bichromate, which has limited its range of application.
In summary, existing aramid fiber battery diaphragm technology in actual use, obviously also exists inconvenience and defect, so be necessary to improve.
Summary of the invention
For above defect, one object of the present invention is to provide a kind of battery diaphragm reinforcing material be placed between multi-layer cell barrier film, described battery diaphragm reinforcing material is manufactured paper with pulp based on aramid short fiber, with addition of aramid fiber fibrid and Fanglun slurry cake and is formed, this material itself has more excellent combination property, the namely excellent advantage such as heat resistance, high strength, fatigue durability, low distortion, fire resistant flame retardant performance, resistance to chemical corrosion.
Another object of the present invention is for providing a kind of lithium ion battery using battery diaphragm reinforcing material of the present invention.
Technical scheme of the present invention is:
Be placed in the battery diaphragm reinforcing material between multi-layer cell barrier film, described battery diaphragm reinforcing material is made up of following component:
Aramid short fiber: 30% ~ 95% weight portion;
Aramid fiber fibrid: 5% ~ 70% weight portion;
Wherein, the length of described aramid short fiber is 6 ± 3mm.
Further, above-mentioned battery diaphragm reinforcing material is preferably made up of following component:
Aramid short fiber: 50% ~ 90% weight portion;
Aramid fiber fibrid: 10% ~ 50% weight portion;
Further, above-mentioned aramid short fiber is selected from aramid fiber 1313 or Fanglun l414 fiber; Described aramid fiber fibrid is selected from aramid fiber 1313 fibrid or Fanglun l414 fibrid.
Described term " fibrid " is different from " pulp " herein, refers to and is essentially the short grained subdividing polymeric product of two-dimensional film shape, and it has the thickness of the length of 100 ~ 1000 μm and width and 0.1 ~ 1 μm.Usually by make polymer solution flow to the coagulating bath of the solvent of this solution not liquid of mixing in prepare and obtain.Polymer solution flow is subject to the impact of strenuous shearing forces and turbulent flow when polymer coagulates.Its method detailed prepared is: be delivered in precipitation machine by the amide resin solution of certain viscosity, controlled solidification composition is utilized to make polymer coagulates, rotor speed 4000 ~ the 8000rpm of precipitation machine, the shearing force of the good quality fibrid of applicable papermaking has been produced under high rotating speed, separate out the fiber of the tiny film strip of two dimension, eventually pass washing, after making beating is refining, obtain full contraposition fibrid slurry.By making beating, the fiber be intertwined is discongested out, and adds the specific area of fibrid, and then enhance interfibrous bond energy.The quality of the fibrid quality of preparation, will directly have influence on the mechanical strength of synthetic paper.
Term " pulp " refers to have fine handle and the fiber material having fine handle with the fibril usually extended from fine handle, wherein fine handle is generally cylindricality and diameter is about 10 ~ 50 μm, and fibril is the fine, soft fur hair-like component be usually connected with fine handle, its diameter is only some/mono-or several μm, and length is about 10 to 100 μm.
Battery diaphragm reinforcing material of the present invention and traditional battery diaphragm use simultaneously, can be positioned between powerful lithium battery diaphragm, can realize the mechanical isolation function improving battery plus-negative plate, improve its security performance.
Another object of the present invention is to provide a kind of preparation method of above-mentioned battery diaphragm reinforcing material, mainly comprises the steps such as slurrying batching, shaping of manufacturing paper with pulp, dry also high temperature hot rolling.Wherein, in slurrying blending process, prescind to about 6 ± 3mm by aramid fiber (aramid fiber 1313 or Fanglun l414 fiber), in water, evacuation is come for subsequent use; Aramid fiber fibrid (1313 fibrids or 1414 fibrids) to be evacuated and the beating degree of pulling an oar to slurry is that 20 ° of SR ~ 85 ° SR are for subsequent use.After being mixed by proportioning by obtained slurry, cylinder mould machine is adopted to be shaped.When preparing battery diaphragm reinforcing material of the present invention, because of the hydrophobicity of aramid fiber, extremely difficult dispersion in water, in order to promote the dispersion of aramid fiber in water, the deflocculant that mass fraction is 0.2% ~ 0.8% is added in mixed slurry, increase fiber at hydrogymnastic resistance, alleviate the be woven wadding of fiber in water poly-, thus reach the object of the evenness improving battery diaphragm reinforcing material.
To manufacture paper with pulp shaping stage, adopt cylinder mould machine.Regulate slurry pressure impartial through slurry-stablizing case, then be dispersed to uniformly on former by slurry through head box, unnecessary slurry overflow is got back to copy in forebay and is recycled.After slurry is shaped, delivers to squeezing through woollen blanket, remove unnecessary moisture, then batch after drying cylinder is dried.
At high temperature hot rolling stage, adopt close to the hot rolling of fibrid condensation temperature point, through hot-rolling mill single hot-roll forming, temperature is between 230 DEG C ~ 320 DEG C, pressure is between 2 ~ 7Mpa, ensure that the density of battery diaphragm reinforcing material is between 0.30 ~ 0.67g/ ㎡, thickness is between 0.02mm ~ 0.05mm.
Battery diaphragm reinforcing material of the present invention combines the various advantages of aramid fiber, fibrid raw material, prepare a kind of battery diaphragm reinforcing material be prepared from by aramid fiber and the aramid fiber fibrid of different ratio, can be placed between various battery diaphragm and use, the plastic battery barrier film be used alone traditional before comparing, the heat resistance and the chemical stability that with the addition of the battery diaphragm of this reinforcing material all increase.
Embodiment
In order to make object of the present invention, technical scheme and advantage more clear, in conjunction with following embodiment, the present invention is described in more detail.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Material source: be purchased
Fanglun l414 fiber: Japanese Di Ren company produces;
Fanglun l414 fibrid: Japanese Di Ren company produces;
Aramid fiber 1313: the color gorgeous production in Xinhui of Guangdong Province;
Aramid fiber 1313 fibrid: the logical Chemical Manufacture of Guanghan fortune.
The preparation of [embodiment 1] battery diaphragm reinforcing material
The component proportion of the battery diaphragm reinforcing material of the present embodiment is as follows:
Fanglun l414 fiber (4mm): 55% mass parts;
Fanglun l414 fibrid: 45% mass parts;
Concrete preparation method is:
Fanglun l414 fiber is for subsequent use by the mass fraction concentration water conservancy pulper evacuation of 0.25%, again the concentration of Fanglun l414 fibrid by 2% mass fraction is evacuated with water conservancy pulper, and be the slurry of 70 ° of SR to beating degree by the further mill of disc mill.Again obtained slurry is added water by the above proportioning in slurry commanding tank and mix, in the process of manufacturing paper with pulp, add the polyethylene glycol oxide that mass fraction is 0.6%, then Cylinder mould formation, through wet pressing, cylinder dried, batch rolling to deposit, then through hot-rolling mill high temperature hot-roll forming, temperature is 290 DEG C, pressure is 4Mpa, just can carry out follow-up trimming process, the result obtained is as shown in table 1:
The testing result of table 1 battery diaphragm reinforcing material
Prepared by [embodiment 2] battery diaphragm reinforcing material
The component proportion of the battery diaphragm reinforcing material of the present embodiment is as follows:
Aramid fiber 1313 (8mm): 65% mass parts;
Fanglun l414 fibrid: 35% mass parts;
Concrete preparation method is:
Aramid fiber 1313 is for subsequent use by the mass fraction concentration water conservancy pulper evacuation of 0.4%, again the concentration of Fanglun l414 fibrid by the mass fraction of 2% is evacuated with water conservancy pulper, and be the slurry of 75 ° of SR to beating degree by the further mill of disc mill.Again obtained slurry is added water by said ratio in slurry commanding tank and mix, in the process of manufacturing paper with pulp, add the polyethylene glycol oxide that mass fraction is 0.6%, then Cylinder mould formation, through wet pressing, cylinder dried, batch rolling to deposit, then through hot-rolling mill high temperature hot-roll forming, temperature is 260 DEG C, pressure is 3Mpa, just can carry out follow-up trimming process, the result obtained is as shown in table 2:
The testing result of table 2 the present embodiment battery diaphragm reinforcing material
[embodiment 3]
The component proportion of the battery diaphragm reinforcing material of the present embodiment is as follows:
Aramid fiber 1313 (6mm): 75% mass parts;
Aramid fiber 1313 fibrid: 25% mass parts;
Concrete preparation method is:
Aramid fiber 1313 is for subsequent use by the mass fraction concentration water conservancy pulper evacuation of 0.4%, the mass fraction concentration water conservancy pulper again aramid fiber 1313 fibrid being pressed 1.3% is evacuated, and is the slurry of 55 ° of SR to beating degree by the further mill of disc mill.Again obtained slurry is added water by said ratio in slurry commanding tank and mix, in the process of manufacturing paper with pulp, add the polyethylene glycol oxide that mass fraction is 0.6%, then Cylinder mould formation, through wet pressing, cylinder dried, batches rolling and deposits, then through hot-rolling mill high temperature hot-roll forming, temperature is 250 DEG C, pressure is 5Mpa, and just can carry out follow-up trimming process, the result obtained is as shown in table 3:
The testing result of table 3 the present embodiment battery diaphragm reinforcing material
[embodiment 4]
The component proportion of the battery diaphragm reinforcing material of the present embodiment is as follows:
Fanglun l414 fiber (6mm): 85% mass fraction;
Aramid fiber 1313 fibrid: 15% mass fraction;
Concrete preparation method is:
Above-mentioned Fanglun l414 fiber is for subsequent use by the mass fraction concentration water conservancy pulper evacuation of 0.3%, again the concentration of the mass fraction of aramid fiber 1313 fibrid 2% water conservancy pulper is evacuated, and be the slurry of 70 ° of SR to beating degree by the further mill of disc mill.Again obtained slurry is added water by said ratio in slurry commanding tank and mix, in the process of manufacturing paper with pulp, add the polyethylene glycol oxide that mass fraction is 0.8%, then Cylinder mould formation, through wet pressing, cylinder dried, batches rolling and deposits, then through hot-rolling mill high temperature hot-roll forming, temperature is 300 DEG C, pressure is 5Mpa, and just can carry out follow-up trimming process, the result obtained is as shown in table 4:
The testing result of table 4 the present embodiment battery diaphragm reinforcing material
[embodiment 5]
The battery of battery diaphragm reinforcing material of the present invention is used to be used alone comparing of the battery of lithium ion battery separator with tradition.
Respectively by the battery diaphragm reinforcing material prepared by above embodiment 1-4 with common battery diaphragm with the use of, adopt lamination sequentially for the mode of " positive pole-barrier film-battery diaphragm reinforcing material-negative pole " makes embodiment battery, then adopt traditional lamination sequentially for the mode of " positive pole-barrier film-negative pole " makes reference examples battery, carry out contrast test.
Capacity and cycle performance test: test according to QC/T 743-2006 " lithium-ions battery used for electric vehicle ".Result shows, and the battery adding battery diaphragm reinforcing material of the present invention is used alone compared with normal production battery that common batteries barrier film makes with traditional, the two battery capacity and cycle performance test all normal, distinguish as shown in table 5.
Table 5a battery capacity, cycle performance test data (1)
Table 5b battery capacity, cycle performance test data (2)
Security test-pin prick test: test according to QC/T 743-2006 " lithium-ions battery used for electric vehicle ".Described two Battery packs are carried out security performance detection, first carries out the experiment of nail thorn, nail thorn negative lug position, measures temperature rise; As without significantly temperature rise or generation of smoldering, change nail thorn positive pole ear position, result display: when thorn test followed closely by traditional battery being used alone the normal production that plastic battery barrier film is made, occur Ignition Phenomena; And all there is not Ignition Phenomena when adding the battery nail thorn test of battery diaphragm reinforcing material of the present invention.
Table 6 security test-pin prick test
Security test-elevated temperature impact test: test according to QC/T 743-2006 " lithium-ions battery used for electric vehicle ".Described two Battery packs are carried out high temperature impact test, after standard charging, battery is put into baking box, baking box is per minute heats 5 ± 2 DEG C until 140 DEG C, constant temperature 30min at such a temperature, and result is as follows:
Table 7 security test-elevated temperature impact test
As can be seen here, the security performance of adding the battery of battery diaphragm reinforcing material of the present invention is used alone the battery of plastic battery barrier film higher than tradition.
The more existing battery diaphragm material of the present invention, changing short fiber is long fibre, and change pulp is fibrid, and simultaneously without the need to using the third raw material, product only uses two kinds of raw material, greatly reduces complexity and the unsteadiness of product and production technology.After it uses the compatibility of long fibre and fibrid, quantitative, the thickness of pattern decline, and gas permeability promotes, and fail safe there is no decline, and this is more conducive to actual application.
Claims (10)
1. be placed in the battery diaphragm reinforcing material between multi-layer cell barrier film, described battery diaphragm reinforcing material is made up of following component:
Aramid short fiber: 30% ~ 95% weight portion;
Aramid fiber fibrid: 5% ~ 70% weight portion;
Described aramid short fiber is aramid fiber 1313 or Fanglun l414 fiber, and length is 6 ± 3mm, and fibre number is 1.2 ~ 3.2dtex; Described aramid fiber fibrid is aramid fiber 1313 fibrid or Fanglun l414 fibrid, and beating degree is 20 ~ 85 ° of SR.
2. battery diaphragm reinforcing material as claimed in claim 1, it is characterized in that, described battery diaphragm reinforcing material is made up of following component:
Aramid short fiber: 50% ~ 90% weight portion;
Aramid fiber fibrid: 10% ~ 50% weight portion.
3. battery diaphragm reinforcing material as claimed in claim 1, it is characterized in that, described battery diaphragm reinforcing material is made up of following component:
Fanglun l414 chopped strand: 55% weight portion;
Fanglun l414 fibrid: 45% weight portion.
4. battery diaphragm reinforcing material as claimed in claim 1, it is characterized in that, described battery diaphragm reinforcing material is made up of following component:
Aramid fiber 1313 chopped strand: 65% weight portion;
Fanglun l414 fibrid: 35% weight portion.
5. battery diaphragm reinforcing material as claimed in claim 1, it is characterized in that, described battery diaphragm reinforcing material is made up of following component:
Aramid fiber 1313 chopped strand: 75% weight portion;
Aramid fiber 1313 fibrid: 25% weight portion.
6. battery diaphragm reinforcing material as claimed in claim 1, it is characterized in that, described battery diaphragm reinforcing material is made up of following component:
Fanglun l414 chopped strand: 85% weight portion;
Aramid fiber 1313 fibrid: 15% weight portion.
7. battery diaphragm reinforcing material as claimed in claim 1, it is characterized in that, the thickness of described battery diaphragm reinforcing material is 0.02mm ~ 0.05mm, is quantitatively 10 ~ 30g/m
2.
8. battery diaphragm reinforcing material as claimed in claim 1, it is characterized in that, the density of described battery diaphragm reinforcing material is 0.30 ~ 0.67g/m
2, porosity is 30 ~ 80%, air permeability Gurley value 1 ~ 3s.
9. prepare a method for battery diaphragm reinforcing material described in claim 1, comprise the steps:
(1) the mass fraction concentration of aramid short fiber being pressed 0.25% ~ 0.5% is evacuated with water conservancy pulper; Aramid fiber fibrid and Fanglun slurry cake are evacuated with water conservancy pulper by the concentration of 1 ~ 3% mass fraction respectively;
(2) by the aramid fiber fibrid of evacuation by disc mill mill to beating degree be the slurry of 20 ~ 85 ° of SR respectively;
(3) obtained each slurry is added water by proportioning according to claim 1 in slurry commanding tank mix, in the process of manufacturing paper with pulp, add the deflocculant that mass fraction is 0.2% ~ 0.8%, as polyethylene glycol oxide, polyvinyl alcohol etc., Cylinder mould formation, through wet pressing, cylinder dried, batch rolling to deposit, temperature be 230 ~ 320 DEG C, pressure is that 2 ~ 7Mpa is through hot-rolling mill high temperature hot-roll forming.
10. a lithium ion battery, is characterized in that comprising battery diaphragm reinforcing material according to claim 1 further between the battery diaphragm of described battery.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826772.0A CN104577011B (en) | 2014-12-25 | 2014-12-25 | A kind of battery diaphragm reinforcing material |
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| CN201410826772.0A CN104577011B (en) | 2014-12-25 | 2014-12-25 | A kind of battery diaphragm reinforcing material |
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| CN104577011B CN104577011B (en) | 2017-12-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107663807A (en) * | 2017-11-22 | 2018-02-06 | 西南大学 | A kind of method for lifting aramid insulating paper mechanical performance and hydrophobic oleophobic performance |
| CN109004149A (en) * | 2017-06-07 | 2018-12-14 | 银隆新能源股份有限公司 | A kind of lithium ion battery separator production method |
| CN110176569A (en) * | 2019-05-17 | 2019-08-27 | 天津工业大学 | A kind of inorganic micro-nano alumina fibre battery diaphragm |
| CN110828755A (en) * | 2018-08-10 | 2020-02-21 | 微宏动力系统（湖州）有限公司 | Composite diaphragm, preparation method thereof and secondary battery |
| CN115207559A (en) * | 2022-06-28 | 2022-10-18 | 陈克复 | High-performance aramid fiber diaphragm and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3142692B2 (en) * | 1992-09-11 | 2001-03-07 | 帝人株式会社 | Battery separator and method for producing the same |
| CN101867030A (en) * | 2010-06-21 | 2010-10-20 | 深圳市龙邦新材料有限公司 | Battery diaphragm based on aramid fibre |
| CN101872852A (en) * | 2010-06-21 | 2010-10-27 | 深圳市龙邦新材料有限公司 | Preparation method of cell diaphragm based on aramid fiber |
| CN103298998A (en) * | 2011-01-04 | 2013-09-11 | 帝人芳纶有限公司 | Paper comprising microfilaments |
| CN103943806A (en) * | 2014-05-06 | 2014-07-23 | 烟台民士达特种纸业股份有限公司 | Battery diaphragm formed by aramid fibers and preparation method thereof |
-
2014
- 2014-12-25 CN CN201410826772.0A patent/CN104577011B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3142692B2 (en) * | 1992-09-11 | 2001-03-07 | 帝人株式会社 | Battery separator and method for producing the same |
| CN101867030A (en) * | 2010-06-21 | 2010-10-20 | 深圳市龙邦新材料有限公司 | Battery diaphragm based on aramid fibre |
| CN101872852A (en) * | 2010-06-21 | 2010-10-27 | 深圳市龙邦新材料有限公司 | Preparation method of cell diaphragm based on aramid fiber |
| CN103298998A (en) * | 2011-01-04 | 2013-09-11 | 帝人芳纶有限公司 | Paper comprising microfilaments |
| CN103943806A (en) * | 2014-05-06 | 2014-07-23 | 烟台民士达特种纸业股份有限公司 | Battery diaphragm formed by aramid fibers and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004149A (en) * | 2017-06-07 | 2018-12-14 | 银隆新能源股份有限公司 | A kind of lithium ion battery separator production method |
| CN109004149B (en) * | 2017-06-07 | 2021-08-10 | 银隆新能源股份有限公司 | Method for manufacturing lithium ion battery diaphragm |
| CN107663807A (en) * | 2017-11-22 | 2018-02-06 | 西南大学 | A kind of method for lifting aramid insulating paper mechanical performance and hydrophobic oleophobic performance |
| CN110828755A (en) * | 2018-08-10 | 2020-02-21 | 微宏动力系统（湖州）有限公司 | Composite diaphragm, preparation method thereof and secondary battery |
| CN110828755B (en) * | 2018-08-10 | 2022-09-16 | 微宏动力系统（湖州）有限公司 | Composite diaphragm, preparation method thereof and secondary battery |
| CN110176569A (en) * | 2019-05-17 | 2019-08-27 | 天津工业大学 | A kind of inorganic micro-nano alumina fibre battery diaphragm |
| CN115207559A (en) * | 2022-06-28 | 2022-10-18 | 陈克复 | High-performance aramid fiber diaphragm and preparation method and application thereof |
| CN115207559B (en) * | 2022-06-28 | 2024-03-22 | 陈克复 | High-performance aramid fiber diaphragm and preparation method and application thereof |
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| Publication number | Publication date |
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| CN104577011B (en) | 2017-12-08 |
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