CN106450047A - High-temperature lithium ion power battery and making method thereof - Google Patents
High-temperature lithium ion power battery and making method thereof Download PDFInfo
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- CN106450047A CN106450047A CN201610902943.2A CN201610902943A CN106450047A CN 106450047 A CN106450047 A CN 106450047A CN 201610902943 A CN201610902943 A CN 201610902943A CN 106450047 A CN106450047 A CN 106450047A
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- high temperature
- carbonate
- ion
- power cell
- lithium ion
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- 238000000034 method Methods 0.000 title claims abstract description 10
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract 7
- 229910001416 lithium ion Inorganic materials 0.000 title abstract 7
- 239000011248 coating agent Substances 0.000 claims abstract description 25
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 239000003792 electrolyte Substances 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 230000000996 additive effect Effects 0.000 claims abstract description 14
- -1 polypropylene Polymers 0.000 claims abstract description 13
- 239000000654 additive Substances 0.000 claims abstract description 12
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims abstract description 11
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims abstract description 10
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims abstract description 10
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011259 mixed solution Substances 0.000 claims abstract description 9
- 238000005087 graphitization Methods 0.000 claims abstract description 8
- 239000002006 petroleum coke Substances 0.000 claims abstract description 8
- 239000004743 Polypropylene Substances 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- 229920001155 polypropylene Polymers 0.000 claims abstract description 7
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical group [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims abstract description 6
- 239000013543 active substance Substances 0.000 claims abstract description 3
- 238000001354 calcination Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 19
- 229910052493 LiFePO4 Inorganic materials 0.000 claims description 16
- 230000004888 barrier function Effects 0.000 claims description 16
- 230000032683 aging Effects 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 15
- 239000006258 conductive agent Substances 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 14
- 239000005030 aluminium foil Substances 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 10
- JKJWYKGYGWOAHT-UHFFFAOYSA-N bis(prop-2-enyl) carbonate Chemical compound C=CCOC(=O)OCC=C JKJWYKGYGWOAHT-UHFFFAOYSA-N 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000741 silica gel Substances 0.000 claims description 8
- 229910002027 silica gel Inorganic materials 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000003475 lamination Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000006259 organic additive Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000011888 foil Substances 0.000 abstract description 5
- 230000014759 maintenance of location Effects 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910021383 artificial graphite Inorganic materials 0.000 abstract 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 6
- 239000011164 primary particle Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 206010016766 flatulence Diseases 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011331 needle coke Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0567—Liquid materials characterised by the additives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
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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
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the field of lithium ion power batteries, in particular to a high-temperature lithium ion power battery and a making method thereof. The high-temperature lithium ion power battery comprises a positive pole, a diaphragm, a negative pole, electrolyte and a shell, the active substance of the positive pole is lithium iron phosphate, and the lithium iron phosphate is wrapped by carbon by 3-5 nm; the current collector of the positive pole is carbon-coated aluminum foil; the diaphragm is a coating diaphragm, the substrate of the diaphragm is polypropylene, and the coating of the diaphragm is ceramic; the negative pole is artificial graphite which is particles obtained after primary calcining is carried out with petroleum coke, and the graphitization degree is 90-95%; the electrolyte comprises an organic solvent and an additive, wherein the organic solvent is a mixed solution of 30-35% of ethylene carbonate, 30-50% of methyl ethyl carbonate, 5-10% of propylene carbonate and 5-40% of diethyl carbonate, and the additive is 2-2.5% of vinylene carbonate; the interior of the shell is wrapped by silicon gel of 0.3-0.5 micrometer. The capacity retention ratio of the made lithium ion power battery can still reach 80% or above after the lithium ion power battery circulates by 3000 circles or above at high temperature and the lithium ion power battery can be safely used at high temperature.
Description
Technical field
The present invention relates to lithium-ion-power cell field is and in particular to a kind of high temperature lithium-ion-power cell and its preparation side
Method.
Background technology
Petroleum resources increasingly depleted, before next oil crisis is arrived, greatly developing pure electric automobile is only choosing.
According to Ministry of Industry and Information's statistics, 2015, the cumulative production in pure electric coach market reached 8.8 ten thousand, increases by 584% on a year-on-year basis, compares
The amount of having a net increase of of 2014 reaches 7.5 ten thousand；The first half of the year in 2016 pure electric coach yield reaches more than 30,000, is the two of the same period last year
Many again.Electric bus mainly adopt lithium iron phosphate dynamic battery, and lithium iron phosphate dynamic battery is higher (especially greater than in temperature
50 DEG C) in the case of, cycle performance substantially reduces, and moreover, summer in 2016, because high temperature leads to battery flatulence, leakage
Situations such as already lead to the electric automobile (big bus) of different model a lot of incidents of spontaneous combustion occur；For solving electric bus applied at elevated temperature
Problem, the present invention provides a kind of lithium-ion-power cell being available under high temperature safe handling.
Content of the invention
Present invention aim to address existing lithium battery at 60 DEG C of high temperature circulation it may appear that flatulence, capacitance loss speed
Rate is fast, capability retention can only achieve the deficiency of 1500 weeks, provide a kind of in the case of 60 DEG C of high temperature circulation can reach 3000
The high temperature lithium-ion-power cell in week and preparation method thereof.
The present invention is achieved by the following technical solutions：
A kind of high temperature lithium-ion-power cell, including positive pole, barrier film, negative pole, electrolyte and shell, described
The active substance of positive pole is LiFePO4, and carbon coating of lithium iron phosphate is 3～5nm；
Plus plate current-collecting body is utter misery aluminium foil；
Barrier film is coated separator, and diaphragm matrix is polypropylene, and coating is pottery；
Negative pole is Delanium, and Delanium is 1 particle of calcining petroleum coke, and degree of graphitization is 90～95%；
Electrolyte includes organic solvent and additive, described organic solvent be 30～35% ethylene carbonate, 30～
The mixed solution of the diethyl carbonate of 50% Ethyl methyl carbonate, 5～10% Allyl carbonate and 5～40%, additive is 2
～2.5% vinylene carbonate；
Enclosure is covered with 0.3～0.5 μm of silica gel.
Preferably, the aluminum foil thickness of described utter misery aluminium foil is 10～16 μm, and utter misery thickness is 0.5～2 μm.
Preferably, the ceramic thickness of described barrier film is 3～10 μm.
Preferably, the organic solvent in described electrolyte be 35% ethylene carbonate, 30% Ethyl methyl carbonate, 5%
Allyl carbonate and 30% diethyl carbonate mixed solution, additive is 2.5% vinylene carbonate.
Preferably, described shell is aluminum hull, box hat or moulds shell.
The method of the described high temperature lithium-ion-power cell of preparation, comprises the following steps：
1), LiFePO4 is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in utter misery aluminum
On paper tinsel, cut into required size pole piece；
2), negative pole Delanium is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in collection
On fluid, cut into required size pole piece；
3), by ceramic diaphragm, positive/negative plate is superimposed, makes battery core；
4), battery core is loaded inside the shell, inject electrolyte, then pass through 45～50 DEG C of standings of high temperature, then vacuum chemical conversion, change
Cheng Houzai is aging by 45～50 DEG C；
5) partial volume again after, aging, chemical conversion battery makes.
Preferably, step 3) described battery core is superposed to zigzag lamination process.
Preferably, step 4) vacuum of described vacuum chemical conversion is -0.04～-0.09kpa.
The beneficial effects of the present invention is：Positive pole adopt carbon coating LiFePO4, carbon coating THICKNESS CONTROL in 3～5nm,
Increase ion conduction, prevent LiFePO4 metal from contacting at high temperature with electrolyte, lead to metal dissolving, negative pole adopts oil
Burnt primary particle Delanium, solves the problems, such as that graphite expansion at high temperature and crystalline texture are caved in, barrier film uses poly- third
Alkene, increases biaxial tension and contractility, using crystal transition technique, then mixes ceramic layer, increase the pick up of barrier film it is ensured that
Under high-temperature condition, the liquid storage rate of electrolyte.Electrolyte uses the higher ethylene carbonate of boiling point, Ethyl methyl carbonate, carbonic acid third
Alkene ester and, the mixed solution of diethyl carbonate it is ensured that under high temperature electrolyte be not easy to evaporate, additive adopts vinylene carbonate
Ester it is ensured that at high temperature the formation of SEI film more stable；Plus plate current-collecting body adopts utter misery aluminium foil, increases the conduction of collector,
Ensure the radiating effect of collector, shell, using the aluminum hull scribbling silica gel, increases the radiating effect of shell, and after fluid injection, standing adopts
High temperature ageing is it is ensured that when SEI film preliminarily forms, increase the high-temperature adaptability of SEI film.Chemical conversion is ensured using vacuum chemical conversion
During activation, SEI film is finer and close.
Brief description
Fig. 1 is the high temperature circulation figure of the high temperature lithium-ion-power cell of the embodiment of the present invention 1 preparation.
Specific embodiment
For being best understood from the present invention, with reference to embodiment and accompanying drawing, the invention will be further described, following examples
It is only that the present invention will be described rather than it is limited.
Embodiment 1：
A kind of high temperature lithium-ion-power cell, the just LiFePO4 extremely after carbon coating, carbon coating is 3nm, and negative pole uses
The primary particle of petroleum coke, degree of graphitization 92%, electrolyte be 30% ethylene carbonate, 35% Ethyl methyl carbonate, 5%
Allyl carbonate and 30% diethyl carbonate mixed solution, additive is 2.5% vinylene carbonate；Barrier film is coating
Barrier film, and diaphragm matrix is polypropylene, coating is pottery；Ceramic thickness is 6 μm；Plus plate current-collecting body：Utter misery aluminium foil, aluminum foil thickness
For 16 μm, utter misery thickness is 1 μm；Shell is aluminum hull, and internal silica gel applies thickness and is 0.5 μm.
Preparation method comprises the following steps：
1), LiFePO4 is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in utter misery aluminum
On paper tinsel, cut into required size pole piece；
2), negative pole Delanium is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in collection
On fluid, cut into required size pole piece；
3), by ceramic diaphragm, positive/negative plate is superimposed, makes battery core；
4), battery core is loaded inside the shell, inject electrolyte, then pass through 45 DEG C of standings of high temperature, then -0.04kpa vacuum
Vacuum is melted into, aging by 45 DEG C again after chemical conversion；
5) partial volume again after, aging, chemical conversion battery makes.
Embodiment 2：
A kind of high temperature lithium-ion-power cell, the just LiFePO4 extremely after carbon coating, carbon coating is 5nm, and negative pole uses
The primary particle of petroleum coke, degree of graphitization 95%, electrolyte be 35% ethylene carbonate, 50% Ethyl methyl carbonate, 10%
Allyl carbonate and 5% diethyl carbonate mixed solution, additive is 2.5% vinylene carbonate；Barrier film is to apply
Layer barrier film, and diaphragm matrix is polypropylene, coating is pottery；Ceramic thickness is 10 μm；Plus plate current-collecting body：Utter misery aluminium foil, aluminium foil
Thickness is 10 μm, and utter misery thickness is 0.5 μm；Shell is aluminum hull, and internal silica gel applies thickness and is 0.3 μm.
1), LiFePO4 is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in utter misery aluminum
On paper tinsel, cut into required size pole piece；
2), negative pole Delanium is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in collection
On fluid, cut into required size pole piece；
3), by ceramic diaphragm, positive/negative plate is superimposed, battery core is made using zigzag lamination process；
4), battery core is loaded inside the shell, inject electrolyte, then pass through 48 DEG C of standings of high temperature, then -0.06kpa vacuum
Vacuum is melted into, aging by 48 DEG C again after chemical conversion；
5) partial volume again after, aging, chemical conversion battery makes.
Embodiment 3：
A kind of high temperature lithium-ion-power cell, the just LiFePO4 extremely after carbon coating, carbon coating is 4nm, and negative pole uses
The primary particle of petroleum coke, degree of graphitization 90%, electrolyte be 33% ethylene carbonate, 30% Ethyl methyl carbonate, 8%
Allyl carbonate and 40% diethyl carbonate mixed solution, additive is 2% vinylene carbonate；Barrier film be coating every
Film, and diaphragm matrix is polypropylene, coating is pottery；Ceramic thickness is 3 μm；Plus plate current-collecting body：Utter misery aluminium foil, aluminum foil thickness is
14 μm, utter misery thickness is 2 μm；Shell is aluminum hull, and internal silica gel applies thickness and is 0.4 μm.
1), LiFePO4 is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in utter misery aluminum
On paper tinsel, cut into required size pole piece；
2), negative pole Delanium is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in collection
On fluid, cut into required size pole piece；
3), by ceramic diaphragm, positive/negative plate is superimposed, makes battery core；
4), battery core is loaded inside the shell, inject electrolyte, then pass through 50 DEG C of standings of high temperature, then vacuum chemical conversion, after chemical conversion
Aging by 50 DEG C again；
5) partial volume again after, aging, chemical conversion battery makes.
Embodiment 4：
A kind of high temperature lithium-ion-power cell, the just LiFePO4 extremely after carbon coating, carbon coating is 4nm, and negative pole uses
The primary particle of petroleum coke, degree of graphitization 94%, electrolyte be 35% ethylene carbonate, 30% Ethyl methyl carbonate, 5%
Allyl carbonate and 30% diethyl carbonate mixed solution, additive is 2.5% vinylene carbonate；Barrier film is coating
Barrier film, and diaphragm matrix is polypropylene, coating is pottery；Ceramic thickness is 6 μm；Plus plate current-collecting body：Utter misery aluminium foil, aluminum foil thickness
For 14 μm, utter misery thickness is 1 μm；Shell is aluminum hull, and internal silica gel applies thickness and is 0.4 μm.
1), LiFePO4 is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in utter misery aluminum
On paper tinsel, cut into required size pole piece；
2), negative pole Delanium is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in collection
On fluid, cut into required size pole piece；
3), by ceramic diaphragm, positive/negative plate is superimposed, battery core is made using zigzag lamination process；
4), battery core is loaded inside the shell, inject electrolyte, then pass through 50 DEG C of standings of high temperature, then -0.09kpa vacuum
Vacuum is melted into, aging by 50 DEG C again after chemical conversion；
5) partial volume again after, aging, chemical conversion battery makes.
Comparative example：
A kind of LiFePO4 of lithium-ion-power cell, just extremely carbon coating, carbon coating is 1nm, negative pole use petroleum coke,
The offspring of needle coke mixing, degree of graphitization is 85%, and electrolyte is 30% ethylene carbonate, 30% carbonic acid diformazan
Ester, 30% Ethyl methyl carbonate, 10% Allyl carbonate, additive is 1.5% vinylene carbonate, and barrier film is poly- second
Alkene, uncoated pottery, plus plate current-collecting body uses 15 μm of aluminium foil, no utter misery, and shell, using moulding shell, no applies silica gel.
1), LiFePO4 is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in utter misery aluminum
On paper tinsel, cut into required size pole piece；
2), negative pole graphite is mixed in solvent, adds conductive agent, disperseed by high speed, make slurry and be coated in collector
On, cut into required size pole piece；
3), by ceramic diaphragm, positive/negative plate is superimposed, makes battery core；
4), battery core is loaded inside the shell, inject electrolyte, then room temperature standing, then be melted into, after chemical conversion, room temperature is aging again.
5) partial volume again after, aging, chemical conversion battery makes.
The lithium-ion-power cell of embodiment 1-4 and comparative example preparation is carried out high temperature circulation test, test result such as table 1
Shown：
Table 1 lithium-ion-power cell high temperature circulation test result
Shown in table 1 and Fig. 1, high temperature lithium-ion-power cell that embodiment 1-4 is prepared in high temperature circulation 3000 weeks and
When above, capability retention remains to reach more than 80%, and test is passed through；And the lithium-ion-power cell that comparative example is prepared is in height
When temperature circulates 800 weeks, capability retention drops to 80%, and flatulence, and test is not passed through.As can be seen here, the present invention carries
Supply a kind of lithium-ion-power cell being available for safe handling under high temperature.
The above embodiment is only that the preferred embodiment of the present invention is described, the not model to the present invention
Enclose and be defined, on the premise of without departing from design spirit of the present invention, the technical side to the present invention for the those of ordinary skill in the art
Various modifications and improvement that case is made, all should fall in the protection domain of claims of the present invention determination.
Claims (8)
1. a kind of high temperature lithium-ion-power cell, including positive pole, barrier film, negative pole, electrolyte and shell it is characterised in that：Described
The active substance of positive pole is LiFePO4, and carbon coating of lithium iron phosphate is 3 ~ 5nm；
Plus plate current-collecting body is utter misery aluminium foil；
Barrier film is coated separator, and diaphragm matrix is polypropylene, and coating is pottery；
Negative pole is Delanium, and Delanium is 1 particle of calcining petroleum coke, and degree of graphitization is 90 ~ 95%；
Electrolyte includes organic solvent and additive, and described organic solvent is 30 ~ 35% ethylene carbonate, 30 ~ 50% carbonic acid
The mixed solution of the diethyl carbonate of methyl ethyl ester, 5 ~ 10% Allyl carbonate and 5 ~ 40%, additive is 2 ~ 2.5% carbonic acid Asia
Vinyl acetate；
Enclosure is covered with 0.3 ~ 0.5 μm of silica gel.
2. a kind of high temperature lithium-ion-power cell according to claim 1 it is characterised in that：The aluminium foil of described utter misery aluminium foil
Thickness is 10 ~ 16 μm, and utter misery thickness is 0.5 ~ 2 μm.
3. a kind of high temperature lithium-ion-power cell according to claim 1 it is characterised in that：The ceramic thickness of described barrier film
For 3 ~ 10 μm.
4. a kind of high temperature lithium-ion-power cell according to claim 1 it is characterised in that：Organic in described electrolyte
Solvent be 35% ethylene carbonate, 30% Ethyl methyl carbonate, 5% Allyl carbonate and 30% diethyl carbonate mixing molten
Liquid, additive is 2.5% vinylene carbonate.
5. a kind of high temperature lithium-ion-power cell according to claim 1 it is characterised in that：Described shell is aluminum hull, steel
Shell or mould shell.
6. the method for the high temperature lithium-ion-power cell described in preparation any one of claim 1-5 is it is characterised in that include following
Step：
1）, LiFePO4 is mixed in solvent, add conductive agent, by high speed disperse, make slurry and be coated on utter misery aluminium foil,
Cut into required size pole piece；
2）, negative pole Delanium is mixed in solvent, add conductive agent, by high speed disperse, make slurry and be coated in collector
On, cut into required size pole piece；
3）, by ceramic diaphragm, positive/negative plate is superimposed, make battery core；
4）, battery core loaded inside the shell, inject electrolyte, then pass through 45 ~ 50 DEG C of standings of high temperature, then vacuum chemical conversion, after chemical conversion
Aging by 45 ~ 50 DEG C again；
5) partial volume again after, aging, chemical conversion battery makes.
7. high temperature lithium-ion-power cell according to claim 6 preparation method it is characterised in that：Step 3）Described electricity
Core is superposed to zigzag lamination process.
8. high temperature lithium-ion-power cell according to claim 6 preparation method it is characterised in that：Step 4）Described true
The vacuum that cavitation becomes is -0.04 ~ -0.09kpa.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493453A (en) * | 2018-04-16 | 2018-09-04 | 桑顿新能源科技有限公司 | A kind of high-energy density LiFePO4 system soft-package battery and preparation method thereof |
| CN108878878A (en) * | 2018-07-05 | 2018-11-23 | 中盐安徽红四方锂电有限公司 | A kind of large capacity high magnification water system lithium iron phosphate battery and preparation method thereof |
| CN109638363A (en) * | 2018-12-04 | 2019-04-16 | 广州市融成锂能锂电池有限公司 | A kind of high temperature resistant ferric phosphate lithium cell |
| CN111244371A (en) * | 2020-01-19 | 2020-06-05 | 青岛国轩电池有限公司 | Lithium iron phosphate battery cell, high-energy-density lithium iron phosphate battery and preparation method of battery |
| CN112382795A (en) * | 2020-11-11 | 2021-02-19 | 中盐安徽红四方锂电有限公司 | Lithium ion battery and preparation method thereof |
| CN114447295A (en) * | 2021-12-28 | 2022-05-06 | 深圳新宙邦科技股份有限公司 | Lithium ion battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103427117A (en) * | 2012-05-21 | 2013-12-04 | 万向电动汽车有限公司 | Electrolyte solution of lithium ion power battery and application |
| CN104393331A (en) * | 2014-11-17 | 2015-03-04 | 云南锡业集团（控股）有限责任公司 | Lithium iron phosphate power battery and preparation method thereof |
| CN104466304A (en) * | 2014-11-13 | 2015-03-25 | 深圳鸿源博得新能源技术发展有限公司 | Battery pack and method for improving thermal field consistency of battery pack |
| CN104577130A (en) * | 2014-12-13 | 2015-04-29 | 山东神工海特电子科技有限公司 | Flexible-packaged high-power lithium iron phosphate power battery |
-
2016
- 2016-10-17 CN CN201610902943.2A patent/CN106450047A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103427117A (en) * | 2012-05-21 | 2013-12-04 | 万向电动汽车有限公司 | Electrolyte solution of lithium ion power battery and application |
| CN104466304A (en) * | 2014-11-13 | 2015-03-25 | 深圳鸿源博得新能源技术发展有限公司 | Battery pack and method for improving thermal field consistency of battery pack |
| CN104393331A (en) * | 2014-11-17 | 2015-03-04 | 云南锡业集团（控股）有限责任公司 | Lithium iron phosphate power battery and preparation method thereof |
| CN104577130A (en) * | 2014-12-13 | 2015-04-29 | 山东神工海特电子科技有限公司 | Flexible-packaged high-power lithium iron phosphate power battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493453A (en) * | 2018-04-16 | 2018-09-04 | 桑顿新能源科技有限公司 | A kind of high-energy density LiFePO4 system soft-package battery and preparation method thereof |
| CN108878878A (en) * | 2018-07-05 | 2018-11-23 | 中盐安徽红四方锂电有限公司 | A kind of large capacity high magnification water system lithium iron phosphate battery and preparation method thereof |
| CN109638363A (en) * | 2018-12-04 | 2019-04-16 | 广州市融成锂能锂电池有限公司 | A kind of high temperature resistant ferric phosphate lithium cell |
| CN111244371A (en) * | 2020-01-19 | 2020-06-05 | 青岛国轩电池有限公司 | Lithium iron phosphate battery cell, high-energy-density lithium iron phosphate battery and preparation method of battery |
| CN112382795A (en) * | 2020-11-11 | 2021-02-19 | 中盐安徽红四方锂电有限公司 | Lithium ion battery and preparation method thereof |
| CN114447295A (en) * | 2021-12-28 | 2022-05-06 | 深圳新宙邦科技股份有限公司 | Lithium ion battery |
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