CN1190862C - Polymer lithium ion battery and its manufacturing method - Google Patents
Polymer lithium ion battery and its manufacturing method Download PDFInfo
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- CN1190862C CN1190862C CNB031498647A CN03149864A CN1190862C CN 1190862 C CN1190862 C CN 1190862C CN B031498647 A CNB031498647 A CN B031498647A CN 03149864 A CN03149864 A CN 03149864A CN 1190862 C CN1190862 C CN 1190862C
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- battery
- positive electrode
- slurry
- polyhexafluoropropylene
- grid
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- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 14
- 229920000642 polymer Polymers 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 68
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000010949 copper Substances 0.000 claims abstract description 24
- 229910052802 copper Inorganic materials 0.000 claims abstract description 24
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 239000003792 electrolyte Substances 0.000 claims abstract description 11
- 239000012528 membrane Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000007772 electrode material Substances 0.000 claims abstract description 6
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 72
- 239000002033 PVDF binder Substances 0.000 claims description 38
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 38
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 30
- -1 polyhexafluoropropylene Polymers 0.000 claims description 24
- 239000004411 aluminium Substances 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 20
- 239000003575 carbonaceous material Substances 0.000 claims description 19
- 239000003960 organic solvent Substances 0.000 claims description 19
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 12
- 239000000284 extract Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 8
- 229910002012 Aerosil® Inorganic materials 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 7
- 239000010941 cobalt Substances 0.000 claims description 7
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 229920002521 macromolecule Polymers 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 3
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000004513 sizing Methods 0.000 claims 1
- 239000011267 electrode slurry Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000007773 negative electrode material Substances 0.000 abstract 3
- 239000000969 carrier Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000007774 positive electrode material Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000009461 vacuum packaging Methods 0.000 abstract 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 5
- 239000005030 aluminium foil Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000003808 methanol extraction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention relates to a making method for a polymer lithium ion battery, which is characterized in that positive electrode slurry, negative electrode material slurry, membrane material slurry and lattice pretreatment material slurry are prepared; the positive electrode slurry, the negative electrode material slurry and the membrane material slurry are respectively coated on carriers; a copper lattice material and an aluminum lattice material are respectively processed through punch forming, and a pretreatment material is used for lattice pretreatment; electrode materials are processed through punch forming, and a membrane material is cut to be in a certain shape; the copper lattice material and the negative electrode material are put together and stuck together by using a heating recombiner, and the aluminum lattice material and the positive electrode material are put together and stuck together by using the heating recombiner; a positive electrode, a negative electrode and a membrane are put together to be processed through press rolling and combined into a battery unit; external circuits of the electrodes, namely, an aluminum lattice of the positive electrode and a copper lattice of the negative electrode, are respectively welded together; a welded battery is put in extraction liquid to be extracted; a compound aluminum film is coated on the battery; an electrolyte is filled into the battery; the battery is processed through vacuum packaging to be made into a product. The method of the present invention has the advantages of simple technology, high rate of finished products, little equipment investment, low production cost, etc.
Description
Technical field
What the present invention relates to is a kind of polymer Li-ion battery, the invention still further relates to a kind of production method of polymer Li-ion battery.
Background technology
In the polymer Li-ion battery production technology comparative maturity, more advanced be the battery manufacturing technology of U.S. BELLCORE company.Safety problem and energy density are on the low side to be two key issues that exist during lithium ion battery is produced, in addition the complexity of production technology, production cost is higher also is puzzlement battery Influence Factors of Development.
Summary of the invention
At the shortcoming that above-mentioned prior art exists, the long-pending experience of being engaged in this area work for many years of the inventor through feasibility study repeatedly, gets generation of the present invention eventually; The invention provides polymer Li-ion battery that a kind of energy density is higher, fail safe better, cost of manufacture is lower and preparation method thereof.
The technical solution used in the present invention is: a kind of polymer Li-ion battery, battery are formed and to be comprised positive pole, negative pole, membrane layer and electrolyte, positive electrode consist of (mass percent) cobalt acid lithium (LiCoO
2) 70-95%, conductive carbon material 1-6%, polyvinylidene fluoride (PVDF) 2-15%, polyhexafluoropropylene (PHFP) 0.5-4%, dibutyl phthalate (DBP) 1.5-15%; Negative material consists of (mass percent) carbonaceous mesophase spherules (CMS) 75-90%, conductive carbon material 1-5%, polyvinylidene fluoride (PVDF) 2-18%, polyhexafluoropropylene (PHFP) 0.5-5%, dibutyl phthalate (DBP) 6.5-12%; Diaphragm material consist of (mass percent) polyvinylidene fluoride (PVDF) 25-50%, polyhexafluoropropylene (PHFP) 5-10%, polyacrylonitrile (PAN) 5-10%, aerosil 2-5%, dibutyl phthalate (DBP) 28-60%; Electrolyte consist of ethylene carbonate (EC): dimethyl carbonate (DMC): ethyl-methyl carbonic ester (EMC)=1: 1: 1 (quality).
Product of the present invention is to make by such method:
Press cobalt acid lithium (LiCoO
2) mixed of 70-95%, conductive carbon material 1-6%, polyvinylidene fluoride (PVDF) 2-15%, polyhexafluoropropylene (PHFP) 0.5-4%, dibutyl phthalate (DBP) 1.5-15%, add acetone simultaneously as organic solvent, stir and produce the positive electrode slurry.
Press the mixed of carbonaceous mesophase spherules (CMS) 75-90%, conductive carbon material 1-5%, polyvinylidene fluoride (PVDF) 2-18%, polyhexafluoropropylene (PHFP) 0.5-5%, dibutyl phthalate (DBP) 6.5-12%, add acetone simultaneously as organic solvent, stir and make the negative material slurry.
Press the mixed of polyvinylidene fluoride (PVDF) 25-50%, polyhexafluoropropylene (PHFP) 5-10%, polyacrylonitrile (PAN) 5-10%, aerosil 2-5%, dibutyl phthalate (DBP) 28-60%, add acetone simultaneously as organic solvent, stir and make the diaphragm material slurry.
Mixed by (mass percent) macromolecule thermosol 70-90%, organic pure 5-20%, conductive carbon material 5-10% adds isopropyl alcohol simultaneously as organic solvent, stirs and makes grid material previously treated slurry.
Be coated in positive electrode slip, negative material slip, diaphragm material slip on the carrier respectively; With copper mesh, the punch forming respectively of aluminium grid material, carry out the grid preliminary treatment with the grid material previously treated; With the electrode material punch forming, diaphragm material cuts into certain shape; Copper mesh and negative material, aluminium grid and positive electrode are placed in together, utilize thermal composite machine under 110-120 ℃ of temperature, copper mesh and negative material, aluminium grid and positive electrode to be sticked together; Positive pole, negative pole and barrier film are put together, and hot pressing is combined into battery unit under 110-120 ℃ of temperature.
With ultrasonic spot welder the aluminium grid of positive pole, the copper mesh of negative pole are welded to one respectively: will weld good battery and be placed on extraction processing in the methanol extraction liquid; Coat aluminum-plastic composite membrane, electrolyte is filled into inside battery, Vacuum Package is made product.
Method of the present invention has advantages such as technology is simple, rate of finished products is high, equipment investment is few, production cost is low.
The battery that adopts the inventive method to make is compared with common lithium ion battery, and energy density is higher, and is more safe and reliable, specifically as follows shown in the face form.
| Project | Common lithium ion battery | Polymer Li-ion battery of the present invention |
| Mass energy density (Wh/Kg) | 100---140 | 120---160 |
| Volume energy density (Wh/l) | 200---280 | 250---320 |
| Toxicity | Light poison | Nontoxic |
| Overcharge | Phenomenon on fire is arranged | Heating |
| Short circuit experiment | Phenomenon on fire is arranged, even blast | Heating |
| Collision | Leakage | No leakage |
Use polyvinylidene fluoride (PVDF), polyhexafluoropropylene (PHFP) and silica flour to make the diaphragm material of battery special use in the product of the present invention, barrier film has good temperature tolerance, effectively prevents internal short-circuit of battery, helps the raising of battery safety.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
As shown in Figure 1, technological process of the present invention is: positive electrode and negative material are mixed respectively, carry out quality testing and outward appearance detection after the coating punching press; With copper, the punching press of aluminium grid, the grid material previously treated mixes the grid preliminary treatment respectively, and pole piece is put, and roll extrusion is combined into positive and negative electrode, and diaphragm material is mixed, is coated with, shears; Carrying out battery unit puts; Roll extrusion is combined into battery unit; Carry out short-circuit test, add nickel strap, aluminium strip ultrasonic spot welding, carry out short-circuit test; Extract, dry with baking box then; Prepare the In Aluminium Foil Packing material and strike out the aluminium foil shell, battery is put in the aluminium foil shell; Dress end limit seals both sides then then, carries out short-circuit test, pours into electrolyte then; Carry out then that battery changes into, become finished product to dispatch from the factory after the Vacuum Package.
For example the present invention is done more detailed description below:
Embodiment one: press cobalt acid lithium (LiCoO
2) 95%, the mixed of conductive carbon material 1%, polyvinylidene fluoride (PVDF) 2%, polyhexafluoropropylene (PHFP) 0.5%, dibutyl phthalate (DBP) 1.5%, add acetone simultaneously as organic solvent, stir and make the positive electrode slurry; Press the mixed of carbonaceous mesophase spherules (CMS) 90%, conductive carbon material 1%, polyvinylidene fluoride (PVDF) 2%, polyhexafluoropropylene (PHFP) 0.5%, dibutyl phthalate (DBP) 6.5%, add acetone simultaneously as organic solvent, stir and make the negative material slurry; Press the mixed of polyvinylidene fluoride (PVDF) 45%, polyhexafluoropropylene (PHFP) 7%, polyacrylonitrile (PAN) 5%, aerosil 5%, dibutyl phthalate (DBP) 38%, add acetone simultaneously as organic solvent, stir and make the diaphragm material slurry; Mixed by (mass percent) macromolecule thermosol 90%, organic pure 5%, conductive carbon material 5% adds isopropyl alcohol simultaneously as organic solvent, stirs and makes grid material previously treated slurry; Be coated on positive electrode slip, negative material slip, diaphragm material slip on the carrier respectively; With copper mesh, the punch forming respectively of aluminium grid material, carry out the grid preliminary treatment with the grid material previously treated; With the electrode material punch forming, diaphragm material cuts into certain shape; Copper mesh and negative material, aluminium grid and positive electrode are placed in together; Utilize thermal composite machine under 110-120 ℃ of temperature, copper mesh and negative material, aluminium grid and positive electrode to be sticked together; Positive pole, negative pole and barrier film are put together; Roll extrusion is combined into battery unit under 110-120 ℃ of temperature; Be welded to one respectively with the ultrasonic spot welder aluminium grid that the external circuit of electrode is promptly anodal, the copper mesh of negative pole; The battery that welding is good is placed in the extract (increasing the composition of extract) and extracts processing; Coat aluminum-plastic composite membrane; Electrolyte is filled into inside battery; Vacuum Package is made product.
Embodiment two: press cobalt acid lithium (LiCoO
2) 70%, conductive carbon material 5%, polyvinylidene fluoride (PVDF) 15%, polyhexafluoropropylene (PHFP) 3%, the mixed of dibutyl phthalate (DBP) 7%, add acetone simultaneously as organic solvent, stir and make the positive electrode slurry, press carbonaceous mesophase spherules (CMS) 75%, conductive carbon material 5%, polyvinylidene fluoride (PVDF) 10%, polyhexafluoropropylene (PHFP) 1%, the mixed of dibutyl phthalate (DBP) 9%, add acetone simultaneously as organic solvent, stir and make the negative material slurry, press polyvinylidene fluoride (PVDF) 25%, polyhexafluoropropylene (PHFP) 7%, polyacrylonitrile (PAN) 8%, aerosil 5%, the mixed of dibutyl phthalate (DBP) 55%, add acetone simultaneously as organic solvent, stir and make the diaphragm material slurry, by (mass percent) macromolecule thermosol 70%, organic pure 20%, the mixed of conductive carbon material 10%, add isopropyl acetone simultaneously as organic solvent, stir and make grid material previously treated slurry; Be coated on positive electrode slip, negative material slip, diaphragm material slip on the carrier respectively; With copper mesh, the punch forming respectively of aluminium grid material, carry out the grid preliminary treatment with the grid material previously treated; With the electrode material punch forming, diaphragm material cuts into certain shape; Copper mesh and negative material, aluminium grid and positive electrode are placed in together; Utilize roller press under 110-120 ℃ of temperature, copper mesh and negative material, aluminium grid and positive electrode to be sticked together; Positive pole, negative pole and barrier film are put together; Roll extrusion is combined into battery unit under 110-120 ℃ of temperature; Be welded to one respectively with the ultrasonic spot welder aluminium grid that the external circuit of electrode is promptly anodal, the copper mesh of negative pole; The battery that welding is good is placed on and extracts processing in the methanol extraction liquid; Coat aluminum-plastic composite membrane; Electrolyte is filled into inside battery; Vacuum Package is made product.
Embodiment three: press cobalt acid lithium (LiCoO
2) 80%, conductive carbon material 2%, polyvinylidene fluoride (PVDF) 10%, polyhexafluoropropylene (PHFP) 2%, the mixed of dibutyl phthalate (DBP) 6%, add acetone simultaneously as organic solvent, stir and make the positive electrode slurry, press carbonaceous mesophase spherules (CMS) 85%, conductive carbon material 2%, polyvinylidene fluoride (PVDF) 5%, polyhexafluoropropylene (PHFP) 1%, the mixed of dibutyl phthalate (DBP) 7%, add acetone simultaneously as organic solvent, stir and make the negative material slurry, press polyvinylidene fluoride (PVDF) 50%, polyhexafluoropropylene (PHFP) 8%, polyacrylonitrile (PAN) 7%, aerosil 5%, the mixed of dibutyl phthalate (DBP) 30%, add acetone simultaneously as organic solvent, stir and make the diaphragm material slurry, by (mass percent) macromolecule thermosol 90%, organic pure 5%, the mixed of conductive carbon material 5%, add isopropyl acetone simultaneously as organic solvent, stir and make grid material previously treated slurry; Be coated on positive electrode slip, negative material slip, diaphragm material slip on the carrier respectively; With copper mesh, the punch forming respectively of aluminium grid material, carry out the grid preliminary treatment with the grid material previously treated; With the electrode material punch forming, diaphragm material cuts into certain shape; Copper mesh and negative material, aluminium grid and positive electrode are placed in together; Utilize roller press under 110-120 ℃ of temperature, copper mesh and negative material, aluminium grid and positive electrode to be sticked together; Positive pole, negative pole and barrier film are put together; Roll extrusion is combined into battery unit under 110-120 ℃ of temperature; Be welded to one respectively with the ultrasonic spot welder aluminium grid that the external circuit of electrode is promptly anodal, the copper mesh of negative pole; The battery that welding is good is placed in the extract (increasing the composition of extract) and extracts processing; Coat aluminum-plastic composite membrane; Electrolyte is filled into inside battery; Vacuum Package is made product.
Claims (2)
1, a kind of manufacture method of polymer Li-ion battery, it is characterized in that: press cobalt acid lithium 70～95%, conductive carbon material 1～6%, polyvinylidene fluoride 2～15%, polyhexafluoropropylene 0.5～4%, the mixed of dibutyl phthalate 1.5～15%, add acetone simultaneously as organic solvent, stir and make anode sizing agent, press carbonaceous mesophase spherules 75～90%, conductive carbon material 1-5%, polyvinylidene fluoride 2-18%, polyhexafluoropropylene 0.5-5%, the mixed of dibutyl phthalate 6.5-12%, add acetone simultaneously as organic solvent, stir and make the negative material slurry, press polyvinylidene fluoride 25-50%, polyhexafluoropropylene 5-10%, polyacrylonitrile 5-10%, aerosil 2-5%, the mixed of dibutyl phthalate 28-60%, add acetone simultaneously as organic solvent, stir and make the diaphragm material slurry, press macromolecule thermosol 70-90%, organic pure 5-20%, the mixed of conductive carbon material 5-10% stirs and makes grid material previously treated slurry; Be coated on positive electrode slip, negative material slip, diaphragm material slip on the carrier respectively; With copper mesh, the punch forming respectively of aluminium grid material, carry out the grid preliminary treatment with the grid material previously treated; With the electrode material punch forming, diaphragm material cuts into certain shape; Copper mesh and negative material, aluminium grid and positive electrode are placed in together; Utilize thermal composite machine under 110-120 ℃ of temperature, copper mesh and negative material, aluminium grid and positive electrode to be sticked together; Positive pole, negative pole and barrier film are put together; Roll extrusion is combined into battery unit under 110-120 ℃ of temperature; Be welded to one respectively with the ultrasonic spot welder aluminium grid that the external circuit of electrode is promptly anodal, the copper mesh of negative pole; The battery that welding is good is placed on and extracts processing in the extract that extract is a methyl alcohol; Coat aluminum-plastic composite membrane; Electrolyte is filled into inside battery; Vacuum Package is made product.
2, a kind of polymer Li-ion battery, it is characterized in that: battery is formed and is comprised positive pole, negative pole, membrane layer and electrolyte, by mass percentage, consisting of of positive electrode: cobalt acid lithium 70-95%, conductive carbon material 1-6%, polyvinylidene fluoride 2-15%, polyhexafluoropropylene 0.5-4%, dibutyl phthalate 1.5-15%; Negative material consists of: carbonaceous mesophase spherules 75-90%, conductive carbon material 1-5%, polyvinylidene fluoride 2-18%, polyhexafluoropropylene 0.5-5%, dibutyl phthalate 6.5-12%; Consisting of of diaphragm material: polyvinylidene fluoride 25-50%, polyhexafluoropropylene 5-10%, polyacrylonitrile 5-10%, aerosil 2-5%, dibutyl phthalate 28-60%; Electrolyte consist of ethylene carbonate: dimethyl carbonate: ethyl-methyl carbonic ester=1: 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB031498647A CN1190862C (en) | 2003-07-30 | 2003-07-30 | Polymer lithium ion battery and its manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031498647A CN1190862C (en) | 2003-07-30 | 2003-07-30 | Polymer lithium ion battery and its manufacturing method |
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| CN1476122A CN1476122A (en) | 2004-02-18 |
| CN1190862C true CN1190862C (en) | 2005-02-23 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006156235A (en) * | 2004-11-30 | 2006-06-15 | Sony Corp | Negative electrode and battery |
| CN100385726C (en) * | 2004-12-28 | 2008-04-30 | 天津力神电池股份有限公司 | Vacuum seal method of square shaped lithium ion secondary battery |
| CN1305166C (en) * | 2005-07-28 | 2007-03-14 | 黑龙江中强能源科技有限公司 | Nano-lithium ion cell and mfg. method thereof |
| CN101685883A (en) * | 2008-09-23 | 2010-03-31 | 深圳市比克电池有限公司 | Polymer lithium ion battery and preparation method thereof |
| CN101853961B (en) * | 2009-03-31 | 2012-07-04 | 比亚迪股份有限公司 | Method for preparing lithium ion battery |
| CN106058223A (en) * | 2016-08-18 | 2016-10-26 | 周新凤 | Modified polyimide solar energy lithium battery cathode material and preparation method thereof |
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Owner name: HARBIN ZHONGQIANG ENERGY SCIENCE CO., LTD. Free format text: FORMER OWNER: HEILONGJIANG ZHONGQIANG ENERGY SCIENCE CO., LTD. Effective date: 20090731 |
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Owner name: DONGGUAN QIANGQIANG NEW ENERGY TECHNOLOGY CO., LTD Free format text: FORMER OWNER: HARBIN ZHONGQIANG POWER TECHNOLOGY CO., LTD. Effective date: 20150703 |
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