CN106784462A - A kind of lithium battery for new-energy automobile - Google Patents
A kind of lithium battery for new-energy automobile Download PDFInfo
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- CN106784462A CN106784462A CN201611125981.8A CN201611125981A CN106784462A CN 106784462 A CN106784462 A CN 106784462A CN 201611125981 A CN201611125981 A CN 201611125981A CN 106784462 A CN106784462 A CN 106784462A
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- Prior art keywords
- lithium battery
- new
- energy automobile
- monomer
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 27
- 230000004888 barrier function Effects 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000000178 monomer Substances 0.000 claims description 47
- 229920005575 poly(amic acid) Polymers 0.000 claims description 26
- 238000009987 spinning Methods 0.000 claims description 24
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 claims description 21
- 150000004985 diamines Chemical class 0.000 claims description 21
- 238000009835 boiling Methods 0.000 claims description 16
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 230000002708 enhancing effect Effects 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 13
- 210000002469 basement membrane Anatomy 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 8
- 238000010041 electrostatic spinning Methods 0.000 claims description 8
- 239000004642 Polyimide Substances 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 210000004379 membrane Anatomy 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 claims description 4
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 229910052980 cadmium sulfide Inorganic materials 0.000 claims description 4
- DMSZORWOGDLWGN-UHFFFAOYSA-N ctk1a3526 Chemical compound NP(N)(N)=O DMSZORWOGDLWGN-UHFFFAOYSA-N 0.000 claims description 4
- WFKAJVHLWXSISD-UHFFFAOYSA-N isobutyramide Chemical group CC(C)C(N)=O WFKAJVHLWXSISD-UHFFFAOYSA-N 0.000 claims description 4
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229940018564 m-phenylenediamine Drugs 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- -1 phenyl ring Diamine Chemical class 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- VIFJUCNPGXNIFD-UHFFFAOYSA-N 2-n-bromobenzene-1,2-diamine Chemical class NC1=CC=CC=C1NBr VIFJUCNPGXNIFD-UHFFFAOYSA-N 0.000 claims description 2
- WEEOFHJAGVFCFD-UHFFFAOYSA-N 2-n-chlorobenzene-1,2-diamine Chemical class NC1=CC=CC=C1NCl WEEOFHJAGVFCFD-UHFFFAOYSA-N 0.000 claims description 2
- IOCXBXZBNOYTLQ-UHFFFAOYSA-N 3-nitrobenzene-1,2-diamine Chemical class NC1=CC=CC([N+]([O-])=O)=C1N IOCXBXZBNOYTLQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910017083 AlN Inorganic materials 0.000 claims description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052582 BN Inorganic materials 0.000 claims description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 2
- 239000005083 Zinc sulfide Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229910052580 B4C Inorganic materials 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical group B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cell Separators (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
The invention discloses a kind of lithium battery for new-energy automobile, belong to field of lithium, it is intended to improve the security and service life of lithium battery, including positive plate（1）, negative plate（2）, positive plate is positioned at positive electrode（3）In, negative plate is located at negative material（4）In, described positive plate is connected with anode ear（101）, negative plate connection negative electrode lug（201）, barrier film is provided between both positive and negative polarity（7）.
Description
Technical field
The present invention relates to field of lithium.
Background technology
In the structure of lithium battery, barrier film is one of crucial interior layer assembly.For lithium battery series, because electrolyte is
Organic solvent system, so that have the diaphragm material of organic solvent-resistant, typically using polyolefin porous membrane.
But the insufficient strength of polyolefin porous membrane, aperture is uneven, and battery easily breaks down when in use, institute
To occur in that with polyimides lithium battery film.
Application No. 201410147627.X, a kind of entitled polyimide nano lithium ion battery separator preparation method and
The patent of invention of its product discloses a kind of preparation method of polyimide nano lithium ion battery separator and products thereof, its preparation
Method is comprised the following steps：The preparation of polyamic acid solution：By the diaminodiphenyl ethers of 4,4' mono- and the double neighbour's benzene of the oxygen of 4,4' mono-
Dicarboxylic acid anhydride is by a certain percentage in dimethylacetylamide（DMAc）Middle polycondensation is obtained；The preparation of melt：By resulting polymers solution
Solidification at a certain temperature obtains solidfied material, then solidfied material is melted below its fusing point in the range of 20-30 DEG C, obtains half hitch
Brilliant melt；It is prepared by barrier film：The melt that will be obtained is processed through melt spinning, recrystallization, cold and hot stretching and thermal finalization series of process
Obtain a nanometer barrier film；Barrier film is post-processed：Including diluent and some residual solvent in removal barrier film, polyamides is dried in a vacuum
Amino acid barrier film；Imidization is processed：Polyamic acid nanometer barrier film to preparing carries out high temperature imidization treatment and obtains polyamides Asia
Amine nanometer barrier film.Obtained excellent product performance, simple processing.But the tensile property of this barrier film, particularly longitudinal direction draw
Stretching performance, gas permeability etc. has a certain degree of deficiency, is not suitable for the demand of present lithium battery, particularly answering in new energy car
With aspect.
The content of the invention
It is an object of the invention to：For above-mentioned problem, there is provided a kind of lithium battery for new-energy automobile, skill
Art scheme is as follows：
Lithium battery disclosed by the invention includes positive plate, negative plate, and positive plate is located in positive electrode, and negative plate is located at negative pole material
In material, described positive plate is connected with anode ear, and negative plate connection negative electrode lug is provided with barrier film between both positive and negative polarity.
Used as improvement, described battery ambient shell is provided with buffering heat dissipating layer between described shell and battery, described
Buffering heat dissipating layer is made up of the elastic polyurethane containing conductive particle.
Used as improvement, described conductive particle is gold particle, silver particles, copper particle, iron particle, one kind of aluminum particulate, matter
Amount accounting is 5%-50%.
Used as improvement, described barrier film includes enhancing film and basement membrane, and described basement membrane is the polyimide base film containing phenyl ring,
Described enhancing film is non-woven membrane.
Further, described basement membrane is prepared by the diamine monomer containing phenyl ring and dianhydride monomer raw material, described containing phenyl ring
Diamine monomer be selected from 2- dimethyl-p-phenylenediamines, p-phenylenediamine, the chloro- 1,2- phenylenediamines of 4-, NPD, isophthalic two
Amine, 5- Trifluoromethyl-1s, the bromo- 1,2- phenylenediamines of 3- phenylenediamines, 4-, 3- nitro -1,2- phenylenediamines.
Preparation method is as follows：
Step 1：Diamine monomer containing phenyl ring is added in the middle of all higher boiling proton solvents in an inert atmosphere, stirring is caused
Diamine monomer is completely dissolved, dianhydride monomer is added afterwards, described diamine monomer and dianhydride monomer mol ratio containing phenyl ring are
1:1, wherein described dianhydride monomer point 2-5 each equivalent within half an hour is added, in 60 DEG C -80 DEG C of temperature of low temperature
Lower reaction 2-10 hours, obtains polyamic acid solution, and wherein polyamic acid mass concentration is 10%-50%.
Step 2：Polyamic acid solution after step 1 is added into inorganic nano pore-forming substance, stirring.
Step 3：Material after step 2 is carried out into electrostatic spinning, wherein enhancing film receive, wherein spinning temperature be 30 DEG C-
60 DEG C, the spinning time is 2-10 hours；
Step 4:Film after the completion of spinning carries out hot imidization, and carries out pore-forming, obtains described composite diaphragm.
Lithium battery for new-energy automobile according to claim 7, it is characterised in that the higher boiling proton is molten
Agent is dimethylacetylamide, sub-phosphono triamine, one kind of Hexaethyl Asia phosphoric triamide.
The as claimed in claim 6 lithium battery for being used for new-energy automobile, it is characterised in that inorganic nano pore-forming substance is
Boron carbide, tungsten carbide, carborundum, titanium carbide, silicon nitride, titanium nitride, aluminium nitride, boron nitride, barium sulfate, cadmium sulfide, copper sulfide,
The mixture of one or more of calcium sulfate, zinc sulphide, zinc oxide, silica.
Lithium battery disclosed by the invention can play a part of buffering by buffering heat dissipating layer, when there is external impacts, and
Can quick heat radiating, protect battery, lithium of the invention electricity, closed pore temperature is low, broken film temperature is high, and improves to a certain extent
Tensile property, reduces battery membranes and is pierced the negative effect brought.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Marked in figure：1- positive plates, 101- anode ears, 2- negative plates, 201- negative electrode lugs, 3- positive electrodes, 4- negative materials, 5-
Shell, 6- buffering heat dissipating layers.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Specific embodiment 1：Present embodiment discloses a kind of lithium battery for new-energy automobile, including positive plate 1, negative pole
Piece 2, positive plate is located in positive electrode 3, and negative plate is located in negative material 4, and described positive plate is connected with anode ear 101,
Negative plate connects negative electrode lug 201, and barrier film 7 is provided between both positive and negative polarity.
Battery ambient is provided with shell 5, and buffering heat dissipating layer 6, described buffering radiating are provided between described shell and battery
Layer is made up of the elastic polyurethane containing conductive particle, and conductive particle is aluminum particulate, and quality accounting is 20%.
Lithium battery diaphragm includes enhancing film and basement membrane, and described basement membrane is the polyimide base film of phenyl ring, described enhancing
Film is non-woven membrane.
Basement membrane is prepared by the diamine monomer containing phenyl ring and dianhydride monomer raw material.
Described preparation method is as follows：
Step 1：2- dimethyl-p-phenylenediamines are added in the middle of all higher boiling proton solvents in an inert atmosphere, it is right that stirring is caused
Diamine monomer is completely dissolved, and adds maleic anhydride monomer afterwards, described diamine monomer and dianhydride monomer mol ratio containing phenyl ring
It is 1:1, wherein points of 2 times each equivalent additions within half an hour of described dianhydride monomer, 2 are reacted at a temperature of 60 DEG C of low temperature
Hour, polyamic acid solution is obtained, wherein polyamic acid mass concentration is 50%.
Step 2：Polyamic acid solution after step 1 is added into inorganic nano pore-forming substance, stirring.
Step 3：Material after step 2 is carried out into electrostatic spinning, wherein enhancing film is received, wherein spinning temperature is 30 DEG C,
The spinning time is 2 hours；
Step 4:Film after the completion of spinning carries out hot imidization, and carries out pore-forming, obtains described composite diaphragm.
Wherein, the higher boiling proton solvent is dimethylacetylamide.
Inorganic nano pore-forming substance is boron carbide.
Specific embodiment 2：It is that barrier film preparation method is different with the difference of embodiment 1, it is specific different as follows：
Step 1：P-phenylenediamine is added in an inert atmosphere in the middle of all higher boiling proton solvents, stirring is caused to diamines list
Body is completely dissolved, and adds maleic anhydride monomer afterwards, and described diamine monomer and dianhydride monomer mol ratio containing phenyl ring are 1:1,
Wherein described dianhydride monomer points of 5 times each equivalent within half an hour are added, the reaction 2 hours at a temperature of 80 DEG C of low temperature,
Polyamic acid solution is obtained, wherein polyamic acid mass concentration is 50%.
Step 2：Polyamic acid solution after step 1 is added into inorganic nano pore-forming substance, stirring.
Step 3：Material after step 2 is carried out into electrostatic spinning, wherein enhancing film is received, wherein spinning temperature is 60 DEG C,
The spinning time is 10 hours；
Step 4:Film after the completion of spinning carries out hot imidization, and carries out pore-forming, obtains described composite diaphragm.
Wherein, the higher boiling proton solvent is sub-phosphono triamine.
Inorganic nano pore-forming substance is titanium carbide.
Specific embodiment 3：It is that barrier film preparation method is different with the difference of embodiment 1, it is specific different as follows：
Step 1：Chloro- 1, the 2- phenylenediamines of 4- are added in the middle of all higher boiling proton solvents in an inert atmosphere, stirring is caused
Diamine monomer is completely dissolved, maleic anhydride monomer, described diamine monomer and dianhydride monomer mole containing phenyl ring are added afterwards
Than being 1:1, wherein described dianhydride monomer points of 4 times each equivalent within half an hour are added, at a temperature of 70 DEG C of low temperature instead
Answer 7 hours, obtain polyamic acid solution, wherein polyamic acid mass concentration is 30%.
Step 2：Polyamic acid solution after step 1 is added into inorganic nano pore-forming substance, stirring.
Step 3：Material after step 2 is carried out into electrostatic spinning, wherein enhancing film is received, wherein spinning temperature is 60 DEG C,
The spinning time is 7 hours；
Step 4:Film after the completion of spinning carries out hot imidization, and carries out pore-forming, obtains described composite diaphragm.
Wherein, the higher boiling proton solvent is sub-phosphono triamine.
Inorganic nano pore-forming substance is silicon nitride.
Specific embodiment 4：It is that barrier film preparation method is different with the difference of embodiment 1, it is specific different as follows：
Step 1：By 5- Trifluoromethyl-1s, 3- phenylenediamines are added in the middle of all higher boiling proton solvents in an inert atmosphere, are stirred
Mix so that be completely dissolved to diamine monomer, maleic anhydride monomer, described diamine monomer and dianhydride list containing phenyl ring are added afterwards
Body mol ratio is 1:1, wherein described dianhydride monomer point 4 each equivalent within half an hour are added, in 60 DEG C of temperature of low temperature
The lower reaction of degree 10 hours, obtains polyamic acid solution, and wherein polyamic acid mass concentration is 10%.
Step 2：Polyamic acid solution after step 1 is added into inorganic nano pore-forming substance, stirring.
Step 3：Material after step 2 is carried out into electrostatic spinning, wherein enhancing film is received, wherein spinning temperature is 60 DEG C,
The spinning time is 2 hours；
Step 4:Film after the completion of spinning carries out hot imidization, and carries out pore-forming, obtains described composite diaphragm.
Wherein, the higher boiling proton solvent is Hexaethyl Asia phosphoric triamide.
Inorganic nano pore-forming substance is cadmium sulfide.
Specific embodiment 5：It is that barrier film preparation method is different with the difference of embodiment 1, it is specific different as follows：
Step 1：Bromo- 1, the 2- phenylenediamines of 4- are added in the middle of all higher boiling proton solvents in an inert atmosphere, stirring is caused
Diamine monomer is completely dissolved, maleic anhydride monomer, described diamine monomer and dianhydride monomer mole containing phenyl ring are added afterwards
Than being 1:1, wherein described dianhydride monomer points of 5 times each equivalent within half an hour are added, at a temperature of 60 DEG C of low temperature instead
Answer 10 hours, obtain polyamic acid solution, wherein polyamic acid mass concentration is 10%.
Step 2：Polyamic acid solution after step 1 is added into inorganic nano pore-forming substance, stirring.
Step 3：Material after step 2 is carried out into electrostatic spinning, wherein enhancing film is received, wherein spinning temperature is 50 DEG C,
The spinning time is 7 hours；
Step 4:Film after the completion of spinning carries out hot imidization, and carries out pore-forming, obtains described composite diaphragm.
Wherein, the higher boiling proton solvent is Hexaethyl Asia phosphoric triamide.
Inorganic nano pore-forming substance is zinc oxide.
Specific embodiment 6：It is that barrier film preparation method is different with the difference of embodiment 1, it is specific different as follows：
Step 1：M-phenylene diamine (MPD) is added in an inert atmosphere in the middle of all higher boiling proton solvents, stirring is caused to diamines list
Body is completely dissolved, and adds maleic anhydride monomer afterwards, and described diamine monomer and dianhydride monomer mol ratio containing phenyl ring are 1:1,
Wherein described dianhydride monomer points of 3 times each equivalent within half an hour are added, the reaction 7 hours at a temperature of 70 DEG C of low temperature,
Polyamic acid solution is obtained, wherein polyamic acid mass concentration is 30%.
Step 2：Polyamic acid solution after step 1 is added into inorganic nano pore-forming substance, stirring.
Step 3：Material after step 2 is carried out into electrostatic spinning, wherein enhancing film is received, wherein spinning temperature is 30 DEG C,
The spinning time is 10 hours；
Step 4:Film after the completion of spinning carries out hot imidization, and carries out pore-forming, obtains described composite diaphragm.
Wherein, the higher boiling proton solvent is dimethylacetylamide.
Inorganic nano pore-forming substance is cadmium sulfide.
The performance detection of embodiment 1-6 is as follows：
Performance measurement to battery is as follows：
Claims (9)
1. a kind of lithium battery for new-energy automobile, it is characterised in that including positive plate（1）, negative plate（2）, positive plate position
In positive electrode（3）In, negative plate is located at negative material（4）In, described positive plate is connected with anode ear（101）, negative plate
Connection negative electrode lug（201）, barrier film is provided between both positive and negative polarity（7）.
2. the lithium battery for new-energy automobile according to claim 1, it is characterised in that described battery ambient shell
（5）, buffering heat dissipating layer is provided between described shell and battery（6）, described buffering heat dissipating layer is by poly- containing conductive particle
Urethane elasticity is constituted.
3. the lithium battery for new-energy automobile according to claim 2, it is characterised in that described conductive particle is gold
Particle, silver particles, copper particle, iron particle, one kind of aluminum particulate, quality accounting are 5%-50%.
4. the lithium battery for new-energy automobile according to claim 2, it is characterised in that described barrier film includes enhancing
Film and basement membrane, described basement membrane are the polyimide base film containing phenyl ring, and described enhancing film is non-woven membrane.
5. the lithium battery for new-energy automobile according to claim 4, it is characterised in that described basement membrane is by containing phenyl ring
Diamine monomer and dianhydride monomer raw material prepare.
6. the lithium battery for new-energy automobile according to claim 5, it is characterised in that the described diamines containing phenyl ring
Monomer is selected from 2- dimethyl-p-phenylenediamines, p-phenylenediamine, the chloro- 1,2- phenylenediamines of 4-, NPD, m-phenylene diamine (MPD), 5- tri-
The bromo- 1,2- phenylenediamines of methyl fluoride -1,3- phenylenediamines, 4-, 3- nitro -1,2- phenylenediamines.
7. the lithium battery for new-energy automobile according to claim 5, it is characterised in that the preparation method of barrier film is such as
Under：
Step 1：Diamine monomer containing phenyl ring is added in the middle of all higher boiling proton solvents in an inert atmosphere, stirring is caused
Diamine monomer is completely dissolved, dianhydride monomer is added afterwards, described diamine monomer and dianhydride monomer mol ratio containing phenyl ring are
1:1, wherein described dianhydride monomer point 2-5 each equivalent within half an hour is added, in 60 DEG C -80 DEG C of temperature of low temperature
Lower reaction 2-10 hours, obtains polyamic acid solution, and wherein polyamic acid mass concentration is 10%-50%;
Step 2：Polyamic acid solution after step 1 is added into inorganic nano pore-forming substance, stirring;
Step 3：Material after step 2 is carried out into electrostatic spinning, wherein enhancing film is received, wherein spinning temperature is 30 DEG C -60
DEG C, the spinning time is 2-10 hours；
Step 4:Film after the completion of spinning carries out hot imidization, and carries out pore-forming, obtains described composite diaphragm.
8. the lithium battery for new-energy automobile according to claim 7, it is characterised in that the higher boiling proton solvent
It is dimethylacetylamide, sub-phosphono triamine, one kind of Hexaethyl Asia phosphoric triamide.
9. the lithium battery of new-energy automobile is used for as claimed in claim 6, it is characterised in that inorganic nano pore-forming substance is carbon
Change boron, tungsten carbide, carborundum, titanium carbide, silicon nitride, titanium nitride, aluminium nitride, boron nitride, barium sulfate, cadmium sulfide, copper sulfide, sulphur
The mixture of one or more of sour calcium, zinc sulphide, zinc oxide, silica.
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