CN109638212A - A kind of high magnification fast charge lithium ion battery - Google Patents

A kind of high magnification fast charge lithium ion battery Download PDF

Info

Publication number
CN109638212A
CN109638212A CN201811385049.8A CN201811385049A CN109638212A CN 109638212 A CN109638212 A CN 109638212A CN 201811385049 A CN201811385049 A CN 201811385049A CN 109638212 A CN109638212 A CN 109638212A
Authority
CN
China
Prior art keywords
negative electrode
electrode active
active material
lithium ion
ion battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811385049.8A
Other languages
Chinese (zh)
Inventor
韦向红
王威
李载波
杨山
邓玉强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DONGGUAN LIWINON ENERGY TECHNOLOGY Co Ltd
Original Assignee
DONGGUAN LIWINON ENERGY TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DONGGUAN LIWINON ENERGY TECHNOLOGY Co Ltd filed Critical DONGGUAN LIWINON ENERGY TECHNOLOGY Co Ltd
Priority to CN201811385049.8A priority Critical patent/CN109638212A/en
Publication of CN109638212A publication Critical patent/CN109638212A/en
Pending legal-status Critical Current

Links

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
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/665—Composites
    • H01M4/667—Composites in the form of layers, e.g. coatings
    • 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
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
    • 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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • 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
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • 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
    • H01M4/36—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
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/028—Positive electrodes
    • 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 invention belongs to technical field of lithium ion more particularly to a kind of high magnification fast charge lithium ion battery, positive plate includes plus plate current-collecting body, positive electrode active material layer and oxide coating；Positive electrode active material layer is coated on plus plate current-collecting body intermediate region, and oxide coating is coated on plus plate current-collecting body head and tail portion；The partial size D50 of positive electrode active materials is 6~12 μm；Negative electrode tab includes negative current collector and negative electrode active material layer, and negative electrode active material layer is coated on negative current collector；Negative electrode active material is the artificial graphite that external sheath has soft carbon and/or hard carbon, and I (004)/I (110) orientation value of artificial graphite is 5~15；It is provided at least two positive pole ears on positive plate, at least two negative lugs are provided in negative electrode tab.Compared with the prior art, lithium ion battery of the invention can support up to 5C multiplying power quick charge, and have extended cycle life, high-temperature storage performance protrusion, properties of product stabilization.

Description

A kind of high magnification fast charge lithium ion battery
Technical field
The invention belongs to technical field of lithium ion more particularly to a kind of high magnification fast charge lithium ion batteries.
Background technique
Lithium ion battery is widely used due to having many advantages, such as that operating voltage is high, energy density is big, memory-less effect In the various electronic equipments such as digital camera, mobile phone, tablet computer, laptop, and constantly to new-energy automobile field Development.However, filling it up with oil compared to conventional fuel oil car a few minutes, new-energy automobile is fully charged, needs several hours, is charging Under the premise of stake is not yet universal, fast charge technology becomes to influence one of the key factor that electric car is quickly popularized, and fast charge Battery also becomes the another developing direction of power lithium-ion battery.
Quick charging battery design consider because being known as many aspects, including positive and negative anodes, isolation film, electrolyte material and pole piece Structure etc..The battery core internal resistance of the winding method production of the prior art is larger, and in the charging of larger multiplying power, heat production is larger, and heat easily occurs The safety accidents such as out of control.In addition, the deintercalation performance of negative electrode material lithium used at present is bad, it is easy in big multiplying power charging process Lithium is analysed in negative electrode tab, generates safety problem, the lithium being enriched in above cathode can consume electrolyte faster, to accelerate battery The service life of decaying, product reduces.Battery of mobile phone currently used in the market can only achieve 1C or 2C charging, and can reach Circulating system to the charging of 3C or even 5C is almost invisible, the demand with market to rapid charging performance, need to develop 3C or more The high battery core for meeting fast charge circulation.
Application No. is 201810193686.9 Chinese patents to disclose Quick-chargeable and its production Method, including anode, cathode, isolation film and electrolyte, anode formula are positive active material, and (mass ratio is for positive conductive agent Conductive black: carbon nanotube: graphene=1:1:(0.1~0.5)), positive bonding agent；Negative electrode material layer includes negative conductive Agent, cathode bonding agent, negative electrode active material (D50≤10um, specific surface area >=1.5m2/g, regiospecific I (004)/I (011)≤ 7), tab is that both ends go out the mode of tab, and the patent of invention rate of charge is up to 6C, the charging of the big multiplying power of realization, but institute The negative electrode material partial size used is too small, and the processing performance of pole piece can greatly give a discount, and the orientation value of negative electrode material is too small, The circulation rebound of cathode pole piece is big, is unfavorable for making full use of for digital class battery space.
Summary of the invention
It is an object of the invention to: in view of the deficiencies of the prior art, and a kind of high magnification fast charge lithium ion battery is provided, it can It supports to be up to the quick charge of 5C multiplying power, and has extended cycle life, high-temperature storage performance protrusion, properties of product stabilization.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of high magnification fast charge lithium ion battery, including the core that is formed by positive plate, negative electrode tab and membrane winding and The electrolyte being filled in the core, the positive plate include that plus plate current-collecting body, positive electrode active material layer and oxide apply Layer；The positive electrode active material layer is coated on an at least surface for the plus plate current-collecting body intermediate region, the oxide coating An at least surface coated on the plus plate current-collecting body head and tail portion, and the oxide coating and the positive active material Layer is located at the same face；
The positive electrode active material layer includes positive electrode active materials, positive bonding agent and positive conductive agent, and the anode is living Property material includes one or more of cobalt acid lithium, nickle cobalt lithium manganate and LiFePO4；The partial size D50 of the positive electrode active materials It is 6~12 μm；The partial size of positive electrode active materials is too small, and specific surface area is excessive, and the side reaction on surface is more, and electrolyte oxidation consumption holds Amount causes capacity to play low, and particle is too small, and Yi Fasheng agglomeration influences battery processing performance；The grain of positive electrode active materials Diameter is excessive, and the diffusion path of lithium ion is elongated, and impedance increases, and influences multiplying power and its cycle performance.
The negative electrode tab includes negative current collector and negative electrode active material layer, and the negative electrode active material layer is coated on described An at least surface for negative current collector；
The negative electrode active material layer includes negative electrode active material, cathode bonding agent, cathode thickener and cathode conductive agent, The negative electrode active material is the artificial graphite that external sheath has soft carbon and/or hard carbon, I (004)/I of the artificial graphite (110) orientation value is 5~15；
It is provided at least two positive pole ears on the positive plate, at least two cathode poles are provided in the negative electrode tab Ear.
As a kind of improvement of high magnification fast charge lithium ion battery of the present invention, the positive electrode active material layer includes 90~95% anode material living, 1~5% Kynoar, 0.5~3% conductive carbon black, 1~4% carbon nanotube and 0.5~1% flake graphite alkene.Conductive carbon black, carbon nanotube and flake graphite alkene three lead positive active material and anode The electric dosage form conductive network evenly dispersed at point, line, surface, greatly improves the electric conductivity of positive plate.
As a kind of improvement of high magnification fast charge lithium ion battery of the present invention, the negative electrode active material layer includes 90~97% cathode material living, 1~3% bonding agent, 1~3% thickener and 1.5~4.5% conductive carbon black.
As a kind of improvement of high magnification fast charge lithium ion battery of the present invention, the pressure of the positive electrode active material layer Real density is 3.2~4.0g/cm3.Compacted density is too small, and tightness is inadequate between particle, disconnects, and partial particulate can not connect By electric current, lead to capacitance loss, in addition compacted density is too small, and the migration path of lithium ion is elongated；Compacted density is excessive, causes Contact between grain is too close, even results in Particle Breakage, and electrolyte infiltration is difficult, reduces the conductivity of pole piece, and charge and discharge is electrical It can be deteriorated.
As a kind of improvement of high magnification fast charge lithium ion battery of the present invention, the coating of the positive electrode active materials Weight is 10~30mg/cm2.Coat weight, that is, surface density, surface density is bigger, and the amount of active material contained in pole piece is got over More, battery capacity is also higher, but the migration path that excessively high surface density will lead to battery lithium ion in charge and discharge process becomes Long, the interface impedance of battery increases, and battery polarization increases, the charge-discharge performance being unfavorable under high current；And surface density it is too small when, The capacity of battery reduces therewith, influences its market competitiveness.
As a kind of improvement of high magnification fast charge lithium ion battery of the present invention, the oxide coating with a thickness of 20~50um.In practical coating production, in order to obtain more smooth oxide coating, oxide slurry viscosity is 2000- 4000mPa.s。
Oxidation as a kind of improvement of high magnification fast charge lithium ion battery of the present invention, in the oxide coating Object includes the one or several kinds of aluminum oxide, titanium oxide and hydrated alumina, and the partial size D50 of the oxide is 0.3~ 3.0μm。
As a kind of improvement of high magnification fast charge lithium ion battery of the present invention, the electrolyte includes lithium salts, has Solvent and organic additive, the lithium salts are lithium hexafluoro phosphate and dioxalic acid lithium borate, and the organic solvent includes carbonic acid second Enester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate and fluorobenzene, the organic additive include carbonic acid Asia second Enester, benzene sulfone, vinylethylene carbonate, ethylene carbonate vinylene, adiponitrile and butyl glycol ether.
As a kind of improvement of high magnification fast charge lithium ion battery of the present invention, the concentration of the lithium salts is 0.8~ 2.0mol/L。
As a kind of improvement of high magnification fast charge lithium ion battery of the present invention, the core with negative electrode tab, diaphragm, The mode that positive plate, diaphragm successively stack winds to be formed.
Compared with the prior art, the present invention at least has the advantages that
1) present invention uses small particle positive electrode active materials, the positive electrode active materials of small particle can preferably with conductive agent and Electrolyte contacts, and the diffusion path of lithium ion is shorter, thus better multiplying power property at performance；
2) present invention has hard carbon and/or the artificial graphite of soft carbon as negative electrode active material using external sheath, promotes people The interlamellar spacing for making graphite increases the embedding lithium channel of lithium ion, ensures that the performance of lithium ion battery high current charge-discharge, mention High charge efficiency；
3) lithium ion battery of the invention uses multi pole ears takeup type structure, and battery core internal resistance is small, and is conducive to battery core high current Surface radiating when charge and discharge；
4) present invention coats oxide coating on the head of plus plate current-collecting body and tail portion, on the one hand, can prevent anode collection The burr of body marginal portion pierces through isolation film, and on the other hand, the oxide in oxide coating has good thermal stability, energy Promote the security performance of battery.
Detailed description of the invention
Fig. 1 is the voltage-time curve figure when battery that embodiment 1 obtains charges.
Fig. 2 is charge percentage-time plot when the battery that embodiment 1 obtains charges.
Fig. 3 is the rate discharge curves for the battery that embodiment 1 obtains.
Fig. 4 is the low temperature discharge curve for the battery that embodiment 1 obtains.
Specific embodiment
With reference to embodiment and Figure of description, the present invention is described in further detail, but the present invention Embodiment be not limited to this.
Embodiment 1
The preparation of positive plate: the cobalt acid lithium for being 6~12 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+sheet Graphene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, solid content 70%, viscosity For 5000mpa.s, two surfaces of aluminium foil intermediate region, coat weight 16mg/cm are coated uniformly on after the sieving of 200 mesh2, By 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；Then the aluminum oxide for being 0.3~3.0 μm by partial size D50 Particle is dissolved in deionized water, is uniformly mixed the slurry for forming that viscosity is 2000-4000mPa.s, is coated uniformly on aluminium foil Two surfaces on head and tail portion, the oxide coating that roll-in is formed with a thickness of 20um, the positive plate cutting that coating is completed is to wanting The positive plate width dimensions asked, weld at least two positive pole ears on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of hard carbon: bonding agent (PVDF): thickener (CMC): conductive Deionized water is added after uniformly mixing in agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content It is 45%, viscosity 3000mpa.s is coated uniformly on two surfaces of copper foil, the I of artificial graphite after the sieving of 150 mesh (004)/I (110) orientation value is 5~15, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3 Compacted density roll-in to certain thickness, then cutting welds at least two cathode to desired negative electrode tab width on it Tab.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 0.8mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Embodiment 2
The preparation of positive plate: the nickle cobalt lithium manganate for being 6~12 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+ Flake graphite alkene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, solid content 70%, Viscosity is 5000mpa.s, and two surfaces of aluminium foil intermediate region, coat weight 10mg/ are coated uniformly on after the sieving of 200 mesh cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；Then the titanium dioxide for being 0.3~3.0 μm by partial size D50 Titanium particle is dissolved in deionized water, is uniformly mixed the slurry for forming that viscosity is 2000-4000mPa.s, is coated uniformly on aluminium Two surfaces on foil head and tail portion, the oxide coating that roll-in is formed with a thickness of 25um arrive the positive plate cutting that coating is completed It is required that positive plate width dimensions, weld at least two positive pole ears on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of soft carbon: bonding agent (PVDF): thickener (CMC): conductive Deionized water is added after uniformly mixing in agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content It is 45%, viscosity 3000mpa.s is coated uniformly on two surfaces of copper foil, the I of artificial graphite after the sieving of 150 mesh (004)/I (110) orientation value is 5~15, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3 Compacted density roll-in to certain thickness, then cutting welds at least two cathode to desired negative electrode tab width on it Tab.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 0.9mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Embodiment 3
The preparation of positive plate: the LiFePO4 for being 6~12 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+piece Shape graphene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, and solid content 70% glues Degree is 5000mpa.s, and two surfaces of aluminium foil intermediate region, coat weight 12mg/ are coated uniformly on after the sieving of 200 mesh cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；Then the hydration oxygen for being 0.3~3.0 μm by partial size D50 Change alumina particles to be dissolved in deionized water, is uniformly mixed the slurry for forming that viscosity is 2000-4000mPa.s, is coated uniformly on Two surfaces on aluminium foil head and tail portion, the oxide coating that roll-in is formed with a thickness of 30um, the positive plate that coating is completed are cut To the positive plate width dimensions of requirement, at least two positive pole ears are welded on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of hard carbon and soft carbon: bonding agent (PVDF): thickener (CMC): deionized water is added after uniformly mixing in conductive agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into cathode slurry Material, solid content 45%, viscosity 3000mpa.s are coated uniformly on two surfaces of copper foil, artificial stone after the sieving of 150 mesh I (004)/I (110) orientation value of ink is 5~15, coat weight 10mg/cm2, by coated negative electrode tab by 1.30~ 1.65g/cm3Compacted density roll-in to certain thickness, then cutting is welded at least on it to desired negative electrode tab width Two negative lugs.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 1.0mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Embodiment 4
The preparation of positive plate: the nickle cobalt lithium manganate and LiFePO4 for being 6~12 μm by partial size D50: conductive agent (conductive carbon black + carbon nanotube+flake graphite alkene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, admittedly contain Amount is 70%, viscosity 5000mpa.s, and two surfaces of aluminium foil intermediate region, coating weight are coated uniformly on after the sieving of 200 mesh Amount is 14mg/cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；It then is 0.3~3.0 μm by partial size D50 Aluminum oxide and titanium dioxide granule be dissolved in deionized water, be uniformly mixed formed viscosity be 2000-4000mPa.s slurry Material, is coated uniformly on two surfaces of aluminium foil head and tail portion, and the oxide coating that roll-in is formed with a thickness of 35um will coat The positive plate of completion is cut to desired positive plate width dimensions, welds at least two positive pole ears on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of hard carbon: bonding agent (PVDF): thickener (CMC): conductive Deionized water is added after uniformly mixing in agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content It is 45%, viscosity 3000mpa.s is coated uniformly on two surfaces of copper foil, the I of artificial graphite after the sieving of 150 mesh (004)/I (110) orientation value is 5~15, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3 Compacted density roll-in to certain thickness, then cutting welds at least two cathode to desired negative electrode tab width on it Tab.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 1.2mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Embodiment 5
The preparation of positive plate: cobalt acid lithium and nickle cobalt lithium manganate by partial size D50 for 6~12 μm: conductive agent (conductive carbon black+ Carbon nanotube+flake graphite alkene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, admittedly contain Amount is 70%, viscosity 5000mpa.s, and two surfaces of aluminium foil intermediate region, coating weight are coated uniformly on after the sieving of 200 mesh Amount is 15mg/cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；It then is 0.3~3.0 μm by partial size D50 Aluminum oxide and hydrated alumina particles be dissolved in deionized water, being uniformly mixed and forming viscosity is 2000-4000mPa.s Slurry, is coated uniformly on two surfaces of aluminium foil head and tail portion, and the oxide coating that roll-in is formed with a thickness of 40um will apply The positive plate for covering completion is cut to desired positive plate width dimensions, welds at least two positive pole ears on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of soft carbon: bonding agent (PVDF): thickener (CMC): conductive Deionized water is added after uniformly mixing in agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content It is 45%, viscosity 3000mpa.s is coated uniformly on two surfaces of copper foil, the I of artificial graphite after the sieving of 150 mesh (004)/I (110) orientation value is 5~15, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3 Compacted density roll-in to certain thickness, then cutting welds at least two cathode to desired negative electrode tab width on it Tab.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 1.4mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Embodiment 6
The preparation of positive plate: cobalt acid lithium and LiFePO4 by partial size D50 for 6~12 μm: conductive agent (conductive carbon black+carbon Nanotube+flake graphite alkene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, solid content It is 70%, viscosity 5000mpa.s is coated uniformly on two surfaces of aluminium foil intermediate region, coat weight after the sieving of 200 mesh For 18mg/cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；It then is 0.3~3.0 μm by partial size D50 Titanium dioxide and hydrated alumina particles are dissolved in deionized water, are uniformly mixed the slurry for forming that viscosity is 2000-4000mPa.s Material, is coated uniformly on two surfaces of aluminium foil head and tail portion, and the oxide coating that roll-in is formed with a thickness of 45um will coat The positive plate of completion is cut to desired positive plate width dimensions, welds at least two positive pole ears on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of hard carbon and soft carbon: bonding agent (PVDF): thickener (CMC): deionized water is added after uniformly mixing in conductive agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into cathode slurry Material, solid content 45%, viscosity 3000mpa.s are coated uniformly on two surfaces of copper foil, artificial stone after the sieving of 150 mesh I (004)/I (110) orientation value of ink is 5~15, coat weight 10mg/cm2, by coated negative electrode tab by 1.30~ 1.65g/cm3Compacted density roll-in to certain thickness, then cutting is welded at least on it to desired negative electrode tab width Two negative lugs.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 1.6mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Embodiment 7
The preparation of positive plate: by the partial size D50 cobalt acid lithium for being 6~12 μm and nickle cobalt lithium manganate and LiFePO4: conductive Agent (conductive carbon black+carbon nanotube+flake graphite alkene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into just Pole slurry, solid content 70%, viscosity 5000mpa.s are coated uniformly on the two of aluminium foil intermediate region after the sieving of 200 mesh Surface, coat weight 20mg/cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；Then by partial size D50 It is dissolved in deionized water for 0.3~3.0 μm of aluminum oxide particle, being uniformly mixed and forming viscosity is 2000-4000mPa.s's Slurry, is coated uniformly on two surfaces of aluminium foil head and tail portion, and the oxide coating that roll-in is formed with a thickness of 50um will apply The positive plate for covering completion is cut to desired positive plate width dimensions, welds at least two positive pole ears on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of hard carbon: bonding agent (PVDF): thickener (CMC): conductive Deionized water is added after uniformly mixing in agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content It is 45%, viscosity 3000mpa.s is coated uniformly on two surfaces of copper foil, the I of artificial graphite after the sieving of 150 mesh (004)/I (110) orientation value is 5~15, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3 Compacted density roll-in to certain thickness, then cutting welds at least two cathode to desired negative electrode tab width on it Tab.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 1.8mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Embodiment 8
The preparation of positive plate: the nickle cobalt lithium manganate for being 6~12 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+ Flake graphite alkene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, solid content 70%, Viscosity is 5000mpa.s, and two surfaces of aluminium foil intermediate region, coat weight 24mg/ are coated uniformly on after the sieving of 200 mesh cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；Then three oxidations for being 0.3~3.0 μm by partial size D50 Two alumina particles are dissolved in deionized water, are uniformly mixed the slurry for forming that viscosity is 2000-4000mPa.s, are coated uniformly on Two surfaces on aluminium foil head and tail portion, the oxide coating that roll-in is formed with a thickness of 28um, the positive plate that coating is completed are cut To the positive plate width dimensions of requirement, at least two positive pole ears are welded on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of soft carbon: bonding agent (PVDF): thickener (CMC): conductive Deionized water is added after uniformly mixing in agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content It is 45%, viscosity 3000mpa.s is coated uniformly on two surfaces of copper foil, the I of artificial graphite after the sieving of 150 mesh (004)/I (110) orientation value is 5~15, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3 Compacted density roll-in to certain thickness, then cutting welds at least two cathode to desired negative electrode tab width on it Tab.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 2.0mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Embodiment 9
The preparation of positive plate: the LiFePO4 for being 6~12 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+piece Shape graphene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, and solid content 70% glues Degree is 5000mpa.s, and two surfaces of aluminium foil intermediate region, coat weight 25mg/ are coated uniformly on after the sieving of 200 mesh cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；Then the titanium dioxide for being 0.3~3.0 μm by partial size D50 Titanium particle is dissolved in deionized water, is uniformly mixed the slurry for forming that viscosity is 2000-4000mPa.s, is coated uniformly on aluminium Two surfaces on foil head and tail portion, the oxide coating that roll-in is formed with a thickness of 48um arrive the positive plate cutting that coating is completed It is required that positive plate width dimensions, weld at least two positive pole ears on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of hard carbon and soft carbon: bonding agent (PVDF): thickener (CMC): deionized water is added after uniformly mixing in conductive agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into cathode slurry Material, solid content 45%, viscosity 3000mpa.s are coated uniformly on two surfaces of copper foil, artificial stone after the sieving of 150 mesh I (004)/I (110) orientation value of ink is 5~15, coat weight 10mg/cm2, by coated negative electrode tab by 1.30~ 1.65g/cm3Compacted density roll-in to certain thickness, then cutting is welded at least on it to desired negative electrode tab width Two negative lugs.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 0.8mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Embodiment 10
The preparation of positive plate: the nickle cobalt lithium manganate for being 6~12 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+ Flake graphite alkene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, solid content 70%, Viscosity is 5000mpa.s, and two surfaces of aluminium foil intermediate region, coat weight 30mg/ are coated uniformly on after the sieving of 200 mesh cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；Then the titanium dioxide for being 0.3~3.0 μm by partial size D50 Titanium particle is dissolved in deionized water, is uniformly mixed the slurry for forming that viscosity is 2000-4000mPa.s, is coated uniformly on aluminium Two surfaces on foil head and tail portion, roll-in to the oxide coating formed with a thickness of 36um, the positive plate that coating is completed are cut To the positive plate width dimensions of requirement, at least two positive pole ears are welded on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of hard carbon: bonding agent (PVDF): thickener (CMC): conductive Deionized water is added after uniformly mixing in agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content It is 45%, viscosity 3000mpa.s is coated uniformly on two surfaces of copper foil, the I of artificial graphite after the sieving of 150 mesh (004)/I (110) orientation value is 5~15, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3 Compacted density roll-in to certain thickness, then cutting welds at least two cathode to desired negative electrode tab width on it Tab.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF6 and LiBOB that concentration is 1.5mol/L are added in mixed solution, stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Comparative example 1
The preparation of positive plate: the cobalt acid lithium for being 20~25 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+piece Shape graphene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, and solid content 70% glues Degree is 5000mpa.s, and two surfaces of aluminium foil, coat weight 16mg/cm are coated uniformly on after the sieving of 200 mesh2, by 3.2 ~4.0g/cm3To certain thickness, the positive plate cutting for finally completing coating is wide to desired positive plate for compacted density roll-in Size is spent, welds a positive pole ear in the header/trailer of positive plate.
The preparation of negative electrode tab: by artificial graphite: bonding agent (PVDF): thickener (CMC): conductive agent (conductive carbon black)= Deionized water is added after uniformly mixing in 95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content 45%, and viscosity is 3000mpa.s is coated uniformly on two surfaces of copper foil, I (004)/I (110) orientation value of artificial graphite after the sieving of 150 mesh Less than or equal to 7, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3Compacted density roll-in To certain thickness, then cutting welds at least two negative lugs to desired negative electrode tab width on it.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 0.8mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Comparative example 2
The preparation of positive plate: the cobalt acid lithium for being 6~12 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+sheet Graphene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, solid content 70%, viscosity For 5000mpa.s, two surfaces of aluminium foil, coat weight 16mg/cm are coated uniformly on after the sieving of 200 mesh2, by 3.2~ 4.0g/cm3To certain thickness, the positive plate for finally completing coating is cut to desired positive plate width for compacted density roll-in Size welds at least two positive pole ears on it.
The preparation of negative electrode tab: by artificial graphite: bonding agent (PVDF): thickener (CMC): conductive agent (conductive carbon black)= Deionized water is added after uniformly mixing in 95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content 45%, and viscosity is 3000mpa.s is coated uniformly on two surfaces of copper foil, I (004)/I (110) orientation value of artificial graphite after the sieving of 150 mesh Less than or equal to 7, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3Compacted density roll-in To certain thickness, then cutting welds at least two negative lugs to desired negative electrode tab width on it.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 0.8mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Comparative example 3
The preparation of positive plate: the cobalt acid lithium for being 20~25 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+piece Shape graphene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, and solid content 70% glues Degree is 5000mpa.s, and two surfaces of aluminium foil intermediate region, coat weight 16mg/ are coated uniformly on after the sieving of 200 mesh cm2, by 3.2~4.0g/cm3Compacted density roll-in is to certain thickness；Then three oxidations for being 0.3~3.0 μm by partial size D50 Two alumina particles are dissolved in deionized water, are uniformly mixed the slurry for forming that viscosity is 2000-4000mPa.s, are coated uniformly on Two surfaces on aluminium foil head and tail portion, roll-in is to the oxide coating formed with a thickness of 20um, finally by the anode of coating completion Piece is cut to desired positive plate width dimensions, welds at least two positive pole ears on it.
The preparation of negative electrode tab: by artificial graphite: bonding agent (PVDF): thickener (CMC): conductive agent (conductive carbon black)= Deionized water is added after uniformly mixing in 95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content 45%, and viscosity is 3000mpa.s is coated uniformly on two surfaces of copper foil, I (004)/I (110) orientation value of artificial graphite after the sieving of 150 mesh Less than or equal to 7, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3Compacted density roll-in To certain thickness, then cutting welds at least two negative lugs to desired negative electrode tab width on it.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 0.8mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Comparative example 4
The preparation of positive plate: the cobalt acid lithium for being 20~25 μm by partial size D50: conductive agent (conductive carbon black+carbon nanotube+piece Shape graphene): bonding agent (PVDF)=95:2:3 is evenly mixed in NMP, is prepared into anode sizing agent, and solid content 70% glues Degree is 5000mpa.s, and two surfaces of aluminium foil, coat weight 16mg/cm are coated uniformly on after the sieving of 200 mesh2, by 3.2 ~4.0g/cm3To certain thickness, the positive plate cutting for finally completing coating is wide to desired positive plate for compacted density roll-in Size is spent, welds at least two positive pole ears on it.
The preparation of negative electrode tab: external sheath is had to the artificial graphite of hard carbon: bonding agent (PVDF): thickener (CMC): conductive Deionized water is added after uniformly mixing in agent (conductive carbon black)=95.5:1.8:1.2:1.5, is prepared into negative electrode slurry, solid content It is 45%, viscosity 3000mpa.s is coated uniformly on two surfaces of copper foil, the I of artificial graphite after the sieving of 150 mesh (004)/I (110) orientation value is 5~15, coat weight 10mg/cm2, coated negative electrode tab is pressed into 1.30~1.65g/cm3 Compacted density roll-in to certain thickness, then cutting welds at least two cathode to desired negative electrode tab width on it Tab.
The preparation of electrolyte: in the glove box (moisture < 10ppm, oxygen < 1ppm) full of argon gas, by ethylene carbonate Ester, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate, fluorobenzene are uniformly mixed with the mass ratio of 1:1:1:1:1:1, The LiPF that concentration is 0.8mol/L is added in mixed solution6And LiBOB, it stirs to it and is completely dissolved, and be further added 0.5% vinylene carbonate, 0.1% benzene sulfone, 2% vinylethylene carbonate, 0.5% ethylene carbonate vinylene, 1% adiponitrile, 1% butyl glycol ether, obtain the lithium-ion battery electrolytes of embodiment 1.
Assembly: positive plate, negative electrode tab and diaphragm are wound into a battery core by certain size, then battery core is put into punching hole It is packaged in good aluminum plastic film, electrolyte is injected after dry, stood 12~36h, be melted into after the abundant imbibition of liquid to be electrolysed, Battery core after being melted into carries out degasification secondary encapsulation to get lithium ion battery is arrived.
Performance test
1) lithium ion battery that embodiment 1 obtains is filled respectively with 0.5C, 1.0C, 2.0C, 3.0C, 5.0C and 7.0C constant current Electricity is to blanking voltage, recording voltage versus time curve and charge percentage versus time curve, respectively such as Fig. 1 With shown in Fig. 2；
2) lithium ion battery for obtaining embodiment 1 respectively with 0.5C, 1.0C, 2.0C, 3.0C and 5.0C constant-current discharge extremely Blanking voltage, recording voltage with percent of discharge change curve (i.e. discharge-rate curve), as shown in Figure 3；
3) under conditions of temperature is -20 DEG C, -10 DEG C, 0 DEG C and 25 DEG C, lithium ion battery that embodiment 1 is obtained with 1.0C constant-current discharge to blanking voltage, recording voltage with percent of discharge change curve (i.e. low temperature discharge curve), such as Fig. 4 institute Show；
4) high rate performance is tested: charging current is respectively 0.5C, 1.0C, 2.0C, 3.0C, 5.0C, 7.0C, and discharge current is 0.5C, voltage range is 3.0~4.35V, to the constant current ratio of the obtained lithium ion battery of Examples 1 to 10 and comparative example 1~4 It measures, constant current ratio=constant-current charge capacity/(constant-current charge capacity+constant-voltage charge capacity) the results are shown in Table 1.
5) cycle performance is tested: charging and discharging currents 3C/3C, and voltage range is 3.0~4.35V, cycle-index 500 Secondary, the circulation conservation rate for the lithium ion battery that testing example 1~10 and comparative example 1~4 obtain the results are shown in Table 2.
6) low temperature performance: charging current 1C, discharge current 1C, discharge test temperature is respectively 25 DEG C, 0 DEG C ,- The low temperature conservation rate for the lithium ion battery that 10 DEG C, -20 DEG C, testing example 1~10 and comparative example 1~4 obtain, the results are shown in Table 2.
1 multiplying power charging performance test result of table
2 low temperature performance of table and cycle performance test result
As can be seen from the data in table 1, the lithium ion battery that embodiment obtains has higher constant current ratio, shows more preferably fast Fill performance, it can be seen that, the present invention has the artificial of hard carbon and/or soft carbon using positive electrode active materials, the external sheath of small particle The winding-structure of graphite and multi pole ears can optimize the big multiplying power charging performance of battery, with high degree so as to meet electricity Demand of the electrical automobile to rapid charge characteristic.
Lithium ion battery by embodiment it can be seen from the result of table 2 is bright in terms of low temperature discharge and its capacity retention ratio It is aobvious to be better than comparative example, which is because, carrying out coating modification to artificial graphite using method of the invention, artificial graphite can be improved Interlamellar spacing, increase negative electrode material cryogenic conditions under lithium ion transmission rate, and then be conducive to improve negative electrode material it is low Temperature electric discharge conservation rate and big circulation performance.
It can be seen that lithium ion battery provided by the invention has both rapid charging performance, low temperature is put in conjunction with the result of table 2 and table 3 Electrical property and big circulation performance, more adapt to current electric car to lithium ion battery high magnification fast charging and discharging and low temperature ring The adaptability in border improves the cycle life of lithium ion battery.
It says according to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned implementation Mode is changed and is modified.Therefore, the invention is not limited to above-mentioned specific embodiment, all those skilled in the art Made any conspicuous improvement, replacement or modification all belong to the scope of protection of the present invention on the basis of the present invention. In addition, although using some specific terms in this specification, these terms are merely for convenience of description, not to this hair Bright composition any restrictions.

Claims (10)

1. a kind of high magnification fast charge lithium ion battery, including the core formed by positive plate, negative electrode tab and membrane winding and is filled out Fill the electrolyte in the core, it is characterised in that: the positive plate include plus plate current-collecting body, positive electrode active material layer and Oxide coating；The positive electrode active material layer is coated on an at least surface for the plus plate current-collecting body intermediate region, the oxygen Compound coating is coated on an at least surface on the plus plate current-collecting body head and tail portion, and the oxide coating and the anode Active material layer is located at the same face；
The positive electrode active material layer includes positive electrode active materials, positive bonding agent and positive conductive agent, the positive-active material Material includes one or more of cobalt acid lithium, nickle cobalt lithium manganate and LiFePO4；The partial size D50 of the positive electrode active materials is 6 ~12 μm；
The negative electrode tab includes negative current collector and negative electrode active material layer, and the negative electrode active material layer is coated on the cathode An at least surface for collector；
The negative electrode active material layer includes negative electrode active material, cathode bonding agent, cathode thickener and cathode conductive agent, described Negative electrode active material is the artificial graphite that external sheath has soft carbon and/or hard carbon, and I (004)/I (110) of the artificial graphite takes It is 5~15 to value；
It is provided at least two positive pole ears on the positive plate, at least two negative lugs are provided in the negative electrode tab.
2. high magnification fast charge lithium ion battery according to claim 1, it is characterised in that: the positive electrode active material layer packet Include 90~95% anode material living, 1~5% Kynoar, 0.5~3% conductive carbon black, 1~4% carbon nanotube With 0.5~1% flake graphite alkene.
3. high magnification fast charge lithium ion battery according to claim 1, it is characterised in that: the negative electrode active material layer packet Include 90~97% cathode material living, 1~3% bonding agent, 1~3% thickener and 1.5~4.5% conductive carbon black.
4. high magnification fast charge lithium ion battery according to claim 1, it is characterised in that: the positive electrode active material layer Compacted density is 3.2~4.0g/cm3。
5. high magnification fast charge lithium ion battery according to claim 1, it is characterised in that: the painting of the positive electrode active materials Covering weight is 10~30mg/cm2。
6. high magnification fast charge lithium ion battery according to claim 1, it is characterised in that: the thickness of the oxide coating For 20~50um.
7. high magnification fast charge lithium ion battery according to claim 1, it is characterised in that: the oxygen in the oxide coating Compound includes the one or several kinds of aluminum oxide, titanium oxide and hydrated alumina, and the partial size D50 of the oxide is 0.3 ~3.0 μm.
8. high magnification fast charge lithium ion battery according to claim 1, it is characterised in that: the electrolyte include lithium salts, Organic solvent and organic additive, the lithium salts are lithium hexafluoro phosphate and dioxalic acid lithium borate, and the organic solvent includes carbonic acid Vinyl acetate, diethyl carbonate, propylene carbonate ester, ethyl propionate, propyl butyrate and fluorobenzene, the organic additive include carbonic acid Asia Vinyl acetate, benzene sulfone, vinylethylene carbonate, ethylene carbonate vinylene, adiponitrile and butyl glycol ether.
9. high magnification fast charge lithium ion battery according to claim 8, it is characterised in that: the concentration of the lithium salts is 0.8 ~2.0mol/L.
10. high magnification fast charge lithium ion battery according to claim 1, it is characterised in that: the core with negative electrode tab, every The mode that film, positive plate, diaphragm successively stack winds to be formed.
CN201811385049.8A 2018-11-20 2018-11-20 A kind of high magnification fast charge lithium ion battery Pending CN109638212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811385049.8A CN109638212A (en) 2018-11-20 2018-11-20 A kind of high magnification fast charge lithium ion battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811385049.8A CN109638212A (en) 2018-11-20 2018-11-20 A kind of high magnification fast charge lithium ion battery

Publications (1)

Publication Number Publication Date
CN109638212A true CN109638212A (en) 2019-04-16

Family

ID=66068584

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811385049.8A Pending CN109638212A (en) 2018-11-20 2018-11-20 A kind of high magnification fast charge lithium ion battery

Country Status (1)

Country Link
CN (1) CN109638212A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110459730A (en) * 2019-07-29 2019-11-15 漳州华锐锂能新能源科技有限公司 A kind of lithium ion battery and preparation method thereof
CN110867581A (en) * 2019-10-30 2020-03-06 郑州比克电池有限公司 High-voltage high-energy-density quick-charging soft-package lithium ion battery
CN110957476A (en) * 2019-10-30 2020-04-03 深圳市卓能新能源股份有限公司 High-rate lithium ion power battery and manufacturing method thereof
CN111082141A (en) * 2019-12-20 2020-04-28 中国电子科技集团公司第十八研究所 High-voltage lithium ion battery electrolyte and preparation method thereof
CN111916668A (en) * 2020-07-27 2020-11-10 珠海冠宇电池股份有限公司 Negative plate, preparation method thereof and lithium ion battery comprising negative plate
CN111987286A (en) * 2020-09-14 2020-11-24 珠海冠宇电池股份有限公司 Negative plate and lithium ion battery comprising same
CN112397693A (en) * 2020-10-10 2021-02-23 惠州锂威新能源科技有限公司 High-rate rapid charging negative electrode material and preparation method thereof, negative electrode plate and battery
CN112420979A (en) * 2019-08-23 2021-02-26 宁德时代新能源科技股份有限公司 Method for determining quick charging performance of negative pole piece and design method of negative pole piece
WO2021109080A1 (en) * 2019-12-05 2021-06-10 宁德时代新能源科技股份有限公司 Lithium ion battery, positive electrode sheet for lithium ion battery, and device
CN112952030A (en) * 2020-03-27 2021-06-11 宁德新能源科技有限公司 Positive pole piece, electrochemical device comprising positive pole piece and electronic device
CN113078282A (en) * 2021-03-23 2021-07-06 珠海冠宇电池股份有限公司 Positive plate and lithium ion battery
CN113161516A (en) * 2021-02-24 2021-07-23 东莞塔菲尔新能源科技有限公司 Lithium ion battery
CN114094053A (en) * 2021-11-05 2022-02-25 惠州锂威新能源科技有限公司 Tail aluminum foil processing method for improving safety test of lithium ion battery
CN116613865A (en) * 2023-07-18 2023-08-18 广东电网有限责任公司东莞供电局 Battery quick-charging method, battery energy storage system and energy storage power station

Citations (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2833899Y (en) * 2005-08-26 2006-11-01 周基平 Lithium ion cell pole pieces and core
CN101174685A (en) * 2007-10-26 2008-05-07 中南大学 Anode or cathode pole piece of lithium ion battery and coating method thereof
CN101197436A (en) * 2006-12-07 2008-06-11 比亚迪股份有限公司 Positive plate of lithium ion secondary battery, and battery including the same
CN201122626Y (en) * 2007-12-07 2008-09-24 比亚迪股份有限公司 Pole piece of stack type battery and pole core and battery including the same
CN101369658A (en) * 2007-08-13 2009-02-18 深圳市比克电池有限公司 Anode active material, positive plate of lithium ion battery and lithium ion battery
CN101447590A (en) * 2008-12-26 2009-06-03 广州市鹏辉电池有限公司 Additive for lithium-ion secondary battery electrolyte and battery thereof
KR20100081952A (en) * 2009-01-06 2010-07-15 주식회사 엘지화학 Cathode active material for lithium secondary battery
CN101820079A (en) * 2009-02-27 2010-09-01 索尼公司 Rechargeable nonaqueous electrolytic battery
CN102099947A (en) * 2008-06-04 2011-06-15 东洋油墨制造股份有限公司 Composition for battery
CN102195032A (en) * 2010-12-16 2011-09-21 东莞新能源电子科技有限公司 Method for preparing pole piece of lithium ion battery
CN102437315A (en) * 2011-12-09 2012-05-02 彩虹集团公司 Preparation method of sulfur electrode of rechargeable lithium sulfur battery
CN102637848A (en) * 2012-04-06 2012-08-15 宁德新能源科技有限公司 Preparation method of lithium ion battery pole piece
CN102800841A (en) * 2012-08-08 2012-11-28 深圳清华大学研究院 Negative plate, lithium ion battery and preparation method thereof
CN102983355A (en) * 2012-12-25 2013-03-20 天津市捷威动力工业有限公司 Lithium ion battery capable of being subjected to high-rate charge and discharge and preparation method thereof
CN103078138A (en) * 2013-02-03 2013-05-01 宁德新能源科技有限公司 High-voltage lithium ion battery and electrolyte thereof
CN103579615A (en) * 2013-08-19 2014-02-12 惠州亿纬锂能股份有限公司 Anode material of lithium battery and lithium battery using anode material
CN105280910A (en) * 2014-07-11 2016-01-27 北京当升材料科技股份有限公司 Phosphorus-contained lithium ion battery positive electrode material and preparation method therefor
CN105355432A (en) * 2015-11-03 2016-02-24 铜陵市科峰电子有限责任公司 High-temperature-resistant capacitor electrolyte
CN105489933A (en) * 2014-09-16 2016-04-13 惠州Tcl金能电池有限公司 Lithium ion battery electrolyte and preparation method thereof, and lithium ion battery
CN106129365A (en) * 2016-08-19 2016-11-16 骆驼集团新能源电池有限公司 A kind of high security iron manganese phosphate lithium battery
CN106531984A (en) * 2016-09-30 2017-03-22 罗仕雄 Low-temperature lithium-ion battery
CN206250283U (en) * 2016-12-02 2017-06-13 东莞新能源科技有限公司 A kind of cathode sheet and battery core
CN107086287A (en) * 2017-03-27 2017-08-22 湖北猛狮新能源科技有限公司 A kind of preparation method of high multiplying power lithium ion battery
CN107275553A (en) * 2017-05-27 2017-10-20 东莞锂威能源科技有限公司 A kind of polymer Li-ion battery and preparation method thereof
CN107528050A (en) * 2017-08-08 2017-12-29 上海华普汽车有限公司 Active substance of lithium ion battery anode, positive electrode, positive electrode slurry, positive plate, its preparation method and lithium ion battery
CN107910484A (en) * 2017-11-15 2018-04-13 上海空间电源研究所 It is a kind of using fast charge lithium ion battery of ceramic diaphragm and preparation method thereof
CN107910483A (en) * 2017-11-15 2018-04-13 上海空间电源研究所 A kind of lithium-ion battery system for having high-energy-density and ultralow temperature multiplying power discharging concurrently

Patent Citations (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2833899Y (en) * 2005-08-26 2006-11-01 周基平 Lithium ion cell pole pieces and core
CN101197436A (en) * 2006-12-07 2008-06-11 比亚迪股份有限公司 Positive plate of lithium ion secondary battery, and battery including the same
CN101369658A (en) * 2007-08-13 2009-02-18 深圳市比克电池有限公司 Anode active material, positive plate of lithium ion battery and lithium ion battery
CN101174685A (en) * 2007-10-26 2008-05-07 中南大学 Anode or cathode pole piece of lithium ion battery and coating method thereof
CN201122626Y (en) * 2007-12-07 2008-09-24 比亚迪股份有限公司 Pole piece of stack type battery and pole core and battery including the same
CN102099947A (en) * 2008-06-04 2011-06-15 东洋油墨制造股份有限公司 Composition for battery
CN101447590A (en) * 2008-12-26 2009-06-03 广州市鹏辉电池有限公司 Additive for lithium-ion secondary battery electrolyte and battery thereof
KR20100081952A (en) * 2009-01-06 2010-07-15 주식회사 엘지화학 Cathode active material for lithium secondary battery
CN101820079A (en) * 2009-02-27 2010-09-01 索尼公司 Rechargeable nonaqueous electrolytic battery
CN102195032A (en) * 2010-12-16 2011-09-21 东莞新能源电子科技有限公司 Method for preparing pole piece of lithium ion battery
CN102437315A (en) * 2011-12-09 2012-05-02 彩虹集团公司 Preparation method of sulfur electrode of rechargeable lithium sulfur battery
CN102637848A (en) * 2012-04-06 2012-08-15 宁德新能源科技有限公司 Preparation method of lithium ion battery pole piece
CN102800841A (en) * 2012-08-08 2012-11-28 深圳清华大学研究院 Negative plate, lithium ion battery and preparation method thereof
CN102983355A (en) * 2012-12-25 2013-03-20 天津市捷威动力工业有限公司 Lithium ion battery capable of being subjected to high-rate charge and discharge and preparation method thereof
CN103078138A (en) * 2013-02-03 2013-05-01 宁德新能源科技有限公司 High-voltage lithium ion battery and electrolyte thereof
CN103579615A (en) * 2013-08-19 2014-02-12 惠州亿纬锂能股份有限公司 Anode material of lithium battery and lithium battery using anode material
CN105280910A (en) * 2014-07-11 2016-01-27 北京当升材料科技股份有限公司 Phosphorus-contained lithium ion battery positive electrode material and preparation method therefor
CN105489933A (en) * 2014-09-16 2016-04-13 惠州Tcl金能电池有限公司 Lithium ion battery electrolyte and preparation method thereof, and lithium ion battery
CN105355432A (en) * 2015-11-03 2016-02-24 铜陵市科峰电子有限责任公司 High-temperature-resistant capacitor electrolyte
CN106129365A (en) * 2016-08-19 2016-11-16 骆驼集团新能源电池有限公司 A kind of high security iron manganese phosphate lithium battery
CN106531984A (en) * 2016-09-30 2017-03-22 罗仕雄 Low-temperature lithium-ion battery
CN206250283U (en) * 2016-12-02 2017-06-13 东莞新能源科技有限公司 A kind of cathode sheet and battery core
CN107086287A (en) * 2017-03-27 2017-08-22 湖北猛狮新能源科技有限公司 A kind of preparation method of high multiplying power lithium ion battery
CN107275553A (en) * 2017-05-27 2017-10-20 东莞锂威能源科技有限公司 A kind of polymer Li-ion battery and preparation method thereof
CN107528050A (en) * 2017-08-08 2017-12-29 上海华普汽车有限公司 Active substance of lithium ion battery anode, positive electrode, positive electrode slurry, positive plate, its preparation method and lithium ion battery
CN107910484A (en) * 2017-11-15 2018-04-13 上海空间电源研究所 It is a kind of using fast charge lithium ion battery of ceramic diaphragm and preparation method thereof
CN107910483A (en) * 2017-11-15 2018-04-13 上海空间电源研究所 A kind of lithium-ion battery system for having high-energy-density and ultralow temperature multiplying power discharging concurrently

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
容亮斌: "石墨形貌对锂离子电池倍率性能的影响", 《电池》 *
容亮斌: "石墨形貌对锂离子电池倍率性能的影响", 《电池》, vol. 48, no. 2, 30 April 2018 (2018-04-30), pages 113 - 116 *
龚静君: "石墨负极对锂离子电池快充性能的影响", 《科技创新与应用》 *
龚静君: "石墨负极对锂离子电池快充性能的影响", 《科技创新与应用》, no. 9, 31 December 2017 (2017-12-31) *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110459730B (en) * 2019-07-29 2023-11-10 漳州华富新能源科技有限公司 Lithium ion battery and manufacturing method thereof
CN110459730A (en) * 2019-07-29 2019-11-15 漳州华锐锂能新能源科技有限公司 A kind of lithium ion battery and preparation method thereof
US11237215B2 (en) 2019-08-23 2022-02-01 Contemporary Amperex Technology Co., Limited Method for determining fast charge performance of a negative electrode plate and method for designing a negative electrode plate
CN112420979A (en) * 2019-08-23 2021-02-26 宁德时代新能源科技股份有限公司 Method for determining quick charging performance of negative pole piece and design method of negative pole piece
CN112420979B (en) * 2019-08-23 2022-02-11 宁德时代新能源科技股份有限公司 Method for determining quick charging performance of negative pole piece and design method of negative pole piece
CN110867581A (en) * 2019-10-30 2020-03-06 郑州比克电池有限公司 High-voltage high-energy-density quick-charging soft-package lithium ion battery
CN110957476A (en) * 2019-10-30 2020-04-03 深圳市卓能新能源股份有限公司 High-rate lithium ion power battery and manufacturing method thereof
CN114245940B (en) * 2019-12-05 2023-08-04 宁德时代新能源科技股份有限公司 Lithium ion battery, positive electrode plate for lithium ion battery and device
CN114245940A (en) * 2019-12-05 2022-03-25 宁德时代新能源科技股份有限公司 Lithium ion battery, positive pole piece and device for lithium ion battery
WO2021109080A1 (en) * 2019-12-05 2021-06-10 宁德时代新能源科技股份有限公司 Lithium ion battery, positive electrode sheet for lithium ion battery, and device
CN111082141A (en) * 2019-12-20 2020-04-28 中国电子科技集团公司第十八研究所 High-voltage lithium ion battery electrolyte and preparation method thereof
CN112952030A (en) * 2020-03-27 2021-06-11 宁德新能源科技有限公司 Positive pole piece, electrochemical device comprising positive pole piece and electronic device
CN111916668A (en) * 2020-07-27 2020-11-10 珠海冠宇电池股份有限公司 Negative plate, preparation method thereof and lithium ion battery comprising negative plate
CN111987286B (en) * 2020-09-14 2021-10-26 珠海冠宇电池股份有限公司 Negative plate and lithium ion battery comprising same
CN111987286A (en) * 2020-09-14 2020-11-24 珠海冠宇电池股份有限公司 Negative plate and lithium ion battery comprising same
CN112397693A (en) * 2020-10-10 2021-02-23 惠州锂威新能源科技有限公司 High-rate rapid charging negative electrode material and preparation method thereof, negative electrode plate and battery
CN113161516A (en) * 2021-02-24 2021-07-23 东莞塔菲尔新能源科技有限公司 Lithium ion battery
CN113161516B (en) * 2021-02-24 2024-01-09 江苏正力新能电池技术有限公司 Lithium ion battery
CN113078282A (en) * 2021-03-23 2021-07-06 珠海冠宇电池股份有限公司 Positive plate and lithium ion battery
CN114094053A (en) * 2021-11-05 2022-02-25 惠州锂威新能源科技有限公司 Tail aluminum foil processing method for improving safety test of lithium ion battery
CN116613865A (en) * 2023-07-18 2023-08-18 广东电网有限责任公司东莞供电局 Battery quick-charging method, battery energy storage system and energy storage power station
CN116613865B (en) * 2023-07-18 2024-03-08 广东电网有限责任公司东莞供电局 Battery quick-charging method, battery energy storage system and energy storage power station

Similar Documents

Publication Publication Date Title
CN109638212A (en) A kind of high magnification fast charge lithium ion battery
EP3886218A1 (en) Negative electrode plate, electrochemical device, and electronic device
CN104008893B (en) The preparation method of lithium ion hybrid capacitors and lithium ion hybrid capacitors thereof
CN106252569B (en) A kind of high volume energy density extended-life lithium ion battery of high voltage and preparation method thereof
CN209045679U (en) Electrochemical appliance and electronic device comprising it
CN102694200B (en) Silicon-based negative lithium-ion battery and manufacturing method thereof
CN109755448A (en) A kind of lithium battery diaphragm and preparation method thereof with benefit lithium coating
CN109687014A (en) A kind of high-energy density fast charging type lithium-ion-power cell
CN106229447A (en) A kind of lithium ion battery
CN111193071A (en) Electrolyte of high-voltage quick-charging lithium ion battery and lithium ion battery
CN103021671A (en) Capacitor of lithium ion battery
CN106654125A (en) Method for preparing modified ceramic diaphragm through dopamine compound adhesive and application thereof
CN112467308B (en) Diaphragm, preparation method thereof and lithium ion battery
KR20070040853A (en) Negative electrode for lithtum secondary battery, method for producing same, and lithtum secondary battery using same
CN101154750A (en) High power gel polymer lithium ion power cell and method of producing the same
CN108417777A (en) A kind of porous triple anode composite piece and preparation method thereof and its application
EP3916848B1 (en) Secondary battery, battery module having same, battery pack, and device
CN110247013A (en) Positive pole piece and electrochemical device containing same
CN105914394B (en) A kind of low-temperature lithium ion battery composite positive pole, low-temperature lithium ion battery anode pole piece and preparation method thereof, lithium ion battery
CN107482164A (en) A kind of electrodes of lithium-ion batteries structure and lithium ion battery
CN104916825A (en) Preparation method of lithium battery high-voltage modified cathode material
CN108258245A (en) A kind of combined conductive agent, lithium ion cell positive and lithium ion battery
CN107039685A (en) Lithium ion battery
WO2020043151A1 (en) Positive electrode plate, preparation method therefor, and lithium-ion rechargeable battery
CN109616604A (en) A kind of preparation method of macroion conduction battery diaphragm and lithium ion battery containing the diaphragm

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20190416