CN109713364A - A kind of 18650 lithium battery of high capacity and its preparation process - Google Patents
A kind of 18650 lithium battery of high capacity and its preparation process Download PDFInfo
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- CN109713364A CN109713364A CN201811611052.7A CN201811611052A CN109713364A CN 109713364 A CN109713364 A CN 109713364A CN 201811611052 A CN201811611052 A CN 201811611052A CN 109713364 A CN109713364 A CN 109713364A
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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
Abstract
The invention discloses a kind of 18650 lithium battery of high capacity and its preparation processes, it is related to new energy manufacturing technology field, including positive electrode, negative electrode material, electrolyte, shell and diaphragm, preparation process is following steps: S1, ingredient: S2, system material: S3, coating: S4, winding: S5, fluid injection.The present invention is in actual use, the lithium battery prepared by using the electrolyte of environment-friendly type, it is not only green and pollution-free, and the lithium battery using capacity can reach 85% or more of its theoretical capacity, and improve the safety of the lithium battery, charge-discharge magnification, comprehensive performance is well beyond requirements of the national standard, it and is high voltage, high safety, high magnification charge and discharge, and the bromine-containing compound being added can effectively reduce battery and spontaneous combustion risk occurs, increase the safety that lithium battery uses, and it is at low cost, it is high-quality, there is good development prospect.
Description
Technical field
The present invention relates to new energy manufacturing technology field, specifically a kind of 18650 lithium battery of high capacity and its preparation process.
Background technique
With the development of world economy, International Petroleum Price fluctuated acutely in recent years, in addition the expection of the following petroleum resources
It reduces, petroleum has become the bottleneck of development of world economy.It is energy-saving, it develops a circular economy, taps a new source of energy and have become
The important direction of world today's energy strategy.New-energy automobile is since it is high with fuel availability, environmental pollution is small, noise is low
The advantages that, become the new developing direction of automobile industry.
Since the new century, countries in the world pay much attention to New Energy Industry development, government from national energy strategy
Height puts into effect a series of policies, supports and push the development of New Energy Industry.American plan 10 years from now in energy technology field
Huge fund is put into, the research and development of advanced battery and electric car are pushed.18650 cylindrical lithium batteries are earliest, most mature, most stable of
Lithium ion battery.It is the features such as temperature difference when normal charge and discharge inside single battery is small, extensive always since it is small with head
Apply in electronic product, new energy power electric car, and China be battery consumption big country, battery China consumption exist compared with
Big growth space, especially advanced power battery, market are huge for resource-effective and environment-friendly battery demand, production environmental protection
Green battery is the inevitable direction of battery industry development.
Chinese patent discloses a kind of high-capacity intelligent dynamic lithium battery and preparation method thereof (Granted publication
CN102522587A), the patented technology is at low cost, finished battery rate is high, manufacture craft is simple, discharge-rate is high, cycle performance
It is good, there is good promotion prospect, but the electrolyte internal resistance of lithium battery interior is big, and stability is poor, and it is temperature sensitive, especially
In hot environment, the stability of lithium battery electrolytes can be drastically reduced, and there are great security risks, and environmental-protecting performance is not
Enough perfect, therefore, those skilled in the art provide a kind of 18650 lithium battery of high capacity and its preparation process, above-mentioned to solve
The problem of being proposed in background technique.
Summary of the invention
The purpose of the present invention is to provide a kind of 18650 lithium battery of high capacity and its preparation processes, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the invention provides the following technical scheme: a kind of 18650 lithium battery of high capacity, including anode
Material, negative electrode material, electrolyte, shell and diaphragm, the positive electrode are divided by weight percentage: positive active material 85~
92%, conductive agent 7~18%, adhesive 5~12%, surplus are solvent；
The negative electrode material is divided by weight percentage: negative electrode active material 92~97%, adhesive 2~5%, thickener 1~5%,
Surplus is solvent；
The electrolyte is divided by weight percentage: toluene 21~25%, bromophenol 1~5%, dimethyl furan 25~31%, pyrroles
Alkanone 5~11%, sulfonyloxy methyl imines potassium 15~21%, lithium phosphate 1~5%, 2,4 dichloro benzene hydrazine hydrochloride 1~5%, p-phenylenediamine
Oxalates 2~5%, tribromoethane 2~7%, dibromo methylfuran 25~35%.
As a further solution of the present invention: the positive active material that the positive electrode is included be nickle cobalt lithium manganate,
One of LiMn2O4, the conductive agent are graphene, and described adhesive is Kynoar.
As further scheme of the invention: the solvent in the positive electrode is N-Methyl pyrrolidone, described molten
Agent weight is the 65~92% of positive active material, conductive agent and adhesive gross weight.
As further scheme of the invention: the negative electrode active material that the negative electrode material is included is graphite or carboxylic first
One of base sodium cellulosate, described adhesive be it is a kind of as butadiene and it is styrene copolymerized be made made of butadiene-styrene rubber, institute
Stating thickener is hydroxypropyl methyl cellulose.
As further scheme of the invention: the solvent in the negative electrode material is pure water, and its weight is living for cathode
Property substance, adhesive, thickener total weight 72~100%.
As further scheme of the invention: the preparation method of the electrolyte is following steps:
A1: it by the compound than weighing each ingredient, is mixed by de-airing mixer, obtains mixed liquor；
A2: by the mixed liquor in A1 under the conditions of supersonic frequency is 1200Hz, ultrasonic time is 2 hours, further mixing, is obtained
To environment friendly flame-retardant electrolyte.
A kind of above-mentioned 18650 lithium battery of high capacity and its preparation process, which is characterized in that its preparation process is following step
It is rapid:
S1, ingredient: it is put into respectively after positive electrode and negative electrode material are measured in proportion and carries out filling at a high speed in two blenders
Divide stirring, the positive mixed slurry and cathode mixed slurry of certain viscosity is made；
S2, system material: and then again by S1 positive mixed slurry and cathode mixed slurry be directed respectively into positive mixer and cathode
In mixer, and it is added in positive mixer by taking out a certain amount of positive solvent in sealing Galvanized Iron Drum at normal temperatures and pressures,
Uniform stirring, mixing time are 30 minutes, obtain anode sizing agent, then a certain amount of cathode solvent is added in cathode blending bucket,
Even stirring, mixing time are 50 minutes, obtain negative electrode slurry；
S3, coating: the anode sizing agent prepared and negative electrode slurry are separately added into positive coating machine material and neutralize cathode coating machine material
In, anode sizing agent is coated in the surface density of 75~90g/ ㎡ by positive coating machine and is cut on the aluminium foil of required size,
It recycles cathode coating machine to be coated in negative electrode slurry with the surface density of 90~110g/ ㎡ to be cut on the copper foil of required size,
Then aluminium foil and copper foil are toasted using the baking oven on coating machine, obtains positive plate and negative electrode tab；
S4, winding: diaphragm paper being added among positive plate and negative electrode tab, and is wound into core by sutomatic winding machine, and
It is fixed in bottom rubberizing paper, set insulating trip, is then placed in shell and forms electrode；
S5, fluid injection: the core for being obtained environment friendly flame-retardant electrolyte injection S4 under conditions of hermetically sealed using automatic filling machine
It is interior, it is sealed after lid lid, and be separately connected intellective protector at the both ends of anode and cathode, can be prepared by finished product high capacity 18650
Lithium battery.
As further scheme of the invention: the stirring condition of the blender in the S1 is temperature at 35~75 DEG C.
Time is 1~3 hour.
As the present invention further scheme: the temperature of the baking in the S3 is 70~100 DEG C, pressure be -50 to -
90MPa is toasted 8~12 hours.
Compared with prior art, the beneficial effects of the present invention are: the present invention devise a kind of 18650 lithium battery of high capacity and
Its preparation process, in actual use, by using lithium battery prepared by the electrolyte of environment-friendly type, not only environmentally protective no dirt
Dye, and the lithium battery using capacity can reach 85% or more of its theoretical capacity, and improve the safety of the lithium battery
Property, charge-discharge magnification, comprehensive performance are high voltage, high safety, high magnification charge and discharge well beyond requirements of the national standard, and
The bromine-containing compound of addition can effectively reduce battery and spontaneous combustion risk occurs, and increase the safety that lithium battery uses, and cost
It is low, it is high-quality, there is good development prospect.
Detailed description of the invention
Fig. 1 is a kind of 18650 lithium battery of high capacity and its flow diagram of preparation process；
Fig. 2 is a kind of component-part diagram of electrolyte in 18650 lithium battery of high capacity and its preparation process；
Fig. 3 is lithium battery experimental performance data comparison figure in a kind of 18650 lithium battery of high capacity and its preparation process.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~3, in the embodiment of the present invention,
Embodiment 1
A kind of 18650 lithium battery of high capacity, including positive electrode, negative electrode material, electrolyte, shell and diaphragm, positive electrode are pressed
Weight percent is divided into: positive active material 90%, conductive agent 15%, adhesive 10%, surplus are solvent；
Negative electrode material is divided by weight percentage: negative electrode active material 92%, adhesive 2%, thickener 2%, surplus are solvent；
Electrolyte is divided by weight percentage: toluene 21%, bromophenol 1%, dimethyl furan 25%, pyrrolidones 5%, sulfonyloxy methyl
Imines potassium 15%, lithium phosphate 1%, 2,4 dichloro benzene hydrazine hydrochloride 1%, p-phenylenediamine oxalate 2, tribromoethane 2%, two bromomethyl furans
Mutter 25%.
Further, the positive active material that positive electrode is included is one of nickle cobalt lithium manganate, LiMn2O4, conduction
Agent is graphene, and adhesive is Kynoar.
Further, the solvent in positive electrode is N-Methyl pyrrolidone, and weight of solvent is positive active material, conduction
The 65~92% of agent and adhesive gross weight.
Further, the negative electrode active material that negative electrode material is included be one of graphite or sodium carboxymethylcellulose,
Adhesive be it is a kind of as butadiene and it is styrene copolymerized be made made of butadiene-styrene rubber, thickener is hydroxypropyl methyl cellulose.
Further, the solvent in negative electrode material is pure water, and its weight is negative electrode active material, adhesive, thickener
The 72~100% of total weight.
Further, the preparation method of electrolyte is following steps:
A1: it by the compound than weighing each ingredient, is mixed by de-airing mixer, obtains mixed liquor；
A2: by the mixed liquor in A1 under the conditions of supersonic frequency is 1200Hz, ultrasonic time is 2 hours, further mixing, is obtained
To environment friendly flame-retardant electrolyte.
Further, a kind of above-mentioned 18650 lithium battery of high capacity and its preparation process, which is characterized in that it prepares work
Skill is following steps:
S1, ingredient: it is put into respectively after positive electrode and negative electrode material are measured in proportion and carries out filling at a high speed in two blenders
Divide stirring, the positive mixed slurry and cathode mixed slurry of certain viscosity is made；
S2, system material: and then again by S1 positive mixed slurry and cathode mixed slurry be directed respectively into positive mixer and cathode
In mixer, and it is added in positive mixer by taking out a certain amount of positive solvent in sealing Galvanized Iron Drum at normal temperatures and pressures,
Uniform stirring, mixing time are 30 minutes, obtain anode sizing agent, then a certain amount of cathode solvent is added in cathode blending bucket,
Even stirring, mixing time are 50 minutes, obtain negative electrode slurry；
S3, coating: the anode sizing agent prepared and negative electrode slurry are separately added into positive coating machine material and neutralize cathode coating machine material
In, anode sizing agent is coated in the surface density of 75~90g/ ㎡ by positive coating machine and is cut on the aluminium foil of required size,
It recycles cathode coating machine to be coated in negative electrode slurry with the surface density of 90~110g/ ㎡ to be cut on the copper foil of required size,
Then aluminium foil and copper foil are toasted using the baking oven on coating machine, obtains positive plate and negative electrode tab；
S4, winding: diaphragm paper being added among positive plate and negative electrode tab, and is wound into core by sutomatic winding machine, and
It is fixed in bottom rubberizing paper, set insulating trip, is then placed in shell and forms electrode；
S5, fluid injection: the core for being obtained environment friendly flame-retardant electrolyte injection S4 under conditions of hermetically sealed using automatic filling machine
It is interior, it is sealed after lid lid, and be separately connected intellective protector at the both ends of anode and cathode, can be prepared by finished product high capacity 18650
Lithium battery.
Further, the stirring condition of the blender in S1 is temperature at 35~75 DEG C.Time is 1~3 hour.
Further, the temperature of the baking in S3 is 70~100 DEG C, and pressure is -50 to -90MPa, is toasted 8~12 hours.
Embodiment 2
A kind of 18650 lithium battery of high capacity, including positive electrode, negative electrode material, electrolyte, shell and diaphragm, positive electrode are pressed
Weight percent is divided into: positive active material 88%, conductive agent 12%, adhesive 9%, surplus are solvent；
Negative electrode material is divided by weight percentage: negative electrode active material 93.5%, adhesive 2.5%, thickener 3%, and surplus is molten
Agent；
Electrolyte is divided by weight percentage: toluene 25%, bromophenol 5%, dimethyl furan 31%, pyrrolidones 11%, methyl sulphur
Acid imide potassium 21%, lithium phosphate 5%, 2,4 dichloro benzene hydrazine hydrochloride 5%, p-phenylenediamine oxalate 5%, tribromoethane 7%, dibromo first
Base furans 35%.
Further, the positive active material that positive electrode is included is one of nickle cobalt lithium manganate, LiMn2O4, conduction
Agent is graphene, and adhesive is Kynoar.
Further, the solvent in positive electrode is N-Methyl pyrrolidone, and weight of solvent is positive active material, conduction
The 65~92% of agent and adhesive gross weight.
Further, the negative electrode active material that negative electrode material is included be one of graphite or sodium carboxymethylcellulose,
Adhesive be it is a kind of as butadiene and it is styrene copolymerized be made made of butadiene-styrene rubber, thickener is hydroxypropyl methyl cellulose.
Further, the solvent in negative electrode material is pure water, and its weight is negative electrode active material, adhesive, thickener
The 72~100% of total weight.
Further, the preparation method of electrolyte is following steps:
A1: it by the compound than weighing each ingredient, is mixed by de-airing mixer, obtains mixed liquor；
A2: by the mixed liquor in A1 under the conditions of supersonic frequency is 1200Hz, ultrasonic time is 2 hours, further mixing, is obtained
To environment friendly flame-retardant electrolyte.
Further, a kind of above-mentioned 18650 lithium battery of high capacity and its preparation process, which is characterized in that it prepares work
Skill is following steps:
S1, ingredient: it is put into respectively after positive electrode and negative electrode material are measured in proportion and carries out filling at a high speed in two blenders
Divide stirring, the positive mixed slurry and cathode mixed slurry of certain viscosity is made；
S2, system material: and then again by S1 positive mixed slurry and cathode mixed slurry be directed respectively into positive mixer and cathode
In mixer, and it is added in positive mixer by taking out a certain amount of positive solvent in sealing Galvanized Iron Drum at normal temperatures and pressures,
Uniform stirring, mixing time are 30 minutes, obtain anode sizing agent, then a certain amount of cathode solvent is added in cathode blending bucket,
Even stirring, mixing time are 50 minutes, obtain negative electrode slurry；
S3, coating: the anode sizing agent prepared and negative electrode slurry are separately added into positive coating machine material and neutralize cathode coating machine material
In, anode sizing agent is coated in the surface density of 75~90g/ ㎡ by positive coating machine and is cut on the aluminium foil of required size,
It recycles cathode coating machine to be coated in negative electrode slurry with the surface density of 90~110g/ ㎡ to be cut on the copper foil of required size,
Then aluminium foil and copper foil are toasted using the baking oven on coating machine, obtains positive plate and negative electrode tab；
S4, winding: diaphragm paper being added among positive plate and negative electrode tab, and is wound into core by sutomatic winding machine, and
It is fixed in bottom rubberizing paper, set insulating trip, is then placed in shell and forms electrode；
S5, fluid injection: the core for being obtained environment friendly flame-retardant electrolyte injection S4 under conditions of hermetically sealed using automatic filling machine
It is interior, it is sealed after lid lid, and be separately connected intellective protector at the both ends of anode and cathode, can be prepared by finished product high capacity 18650
Lithium battery.
Further, the stirring condition of the blender in S1 is temperature at 35~75 DEG C.Time is 1~3 hour.
Further, the temperature of the baking in S3 is 70~100 DEG C, and pressure is -50 to -90MPa, is toasted 8~12 hours.
Embodiment 3
A kind of 18650 lithium battery of high capacity, including positive electrode, negative electrode material, electrolyte, shell and diaphragm, positive electrode are pressed
Weight percent is divided into: positive active material 86%, conductive agent 9%, adhesive 8%, surplus are solvent；
Negative electrode material is divided by weight percentage: negative electrode active material 95%, adhesive 3%, thickener 4%, surplus are solvent；
Electrolyte is divided by weight percentage: toluene 23%, bromophenol 3%, dimethyl furan 27%, pyrrolidones 8%, sulfonyloxy methyl
Imines potassium 18%, lithium phosphate 3.5%, 2,4 dichloro benzene hydrazine hydrochloride 3%, p-phenylenediamine oxalate 4%, tribromoethane 4.5%, dibromo
Methylfuran 30%.
Further, the positive active material that positive electrode is included is one of nickle cobalt lithium manganate, LiMn2O4, conduction
Agent is graphene, and adhesive is Kynoar.
Further, the solvent in positive electrode is N-Methyl pyrrolidone, and weight of solvent is positive active material, conduction
The 65~92% of agent and adhesive gross weight.
Further, the negative electrode active material that negative electrode material is included be one of graphite or sodium carboxymethylcellulose,
Adhesive be it is a kind of as butadiene and it is styrene copolymerized be made made of butadiene-styrene rubber, thickener is hydroxypropyl methyl cellulose.
Further, the solvent in negative electrode material is pure water, and its weight is negative electrode active material, adhesive, thickener
The 72~100% of total weight.
Further, the preparation method of electrolyte is following steps:
A1: it by the compound than weighing each ingredient, is mixed by de-airing mixer, obtains mixed liquor；
A2: by the mixed liquor in A1 under the conditions of supersonic frequency is 1200Hz, ultrasonic time is 2 hours, further mixing, is obtained
To environment friendly flame-retardant electrolyte.
Further, a kind of above-mentioned 18650 lithium battery of high capacity and its preparation process, which is characterized in that it prepares work
Skill is following steps:
S1, ingredient: it is put into respectively after positive electrode and negative electrode material are measured in proportion and carries out filling at a high speed in two blenders
Divide stirring, the positive mixed slurry and cathode mixed slurry of certain viscosity is made；
S2, system material: and then again by S1 positive mixed slurry and cathode mixed slurry be directed respectively into positive mixer and cathode
In mixer, and it is added in positive mixer by taking out a certain amount of positive solvent in sealing Galvanized Iron Drum at normal temperatures and pressures,
Uniform stirring, mixing time are 30 minutes, obtain anode sizing agent, then a certain amount of cathode solvent is added in cathode blending bucket,
Even stirring, mixing time are 50 minutes, obtain negative electrode slurry；
S3, coating: the anode sizing agent prepared and negative electrode slurry are separately added into positive coating machine material and neutralize cathode coating machine material
In, anode sizing agent is coated in the surface density of 75~90g/ ㎡ by positive coating machine and is cut on the aluminium foil of required size,
It recycles cathode coating machine to be coated in negative electrode slurry with the surface density of 90~110g/ ㎡ to be cut on the copper foil of required size,
Then aluminium foil and copper foil are toasted using the baking oven on coating machine, obtains positive plate and negative electrode tab；
S4, winding: diaphragm paper being added among positive plate and negative electrode tab, and is wound into core by sutomatic winding machine, and
It is fixed in bottom rubberizing paper, set insulating trip, is then placed in shell and forms electrode；
S5, fluid injection: the core for being obtained environment friendly flame-retardant electrolyte injection S4 under conditions of hermetically sealed using automatic filling machine
It is interior, it is sealed after lid lid, and be separately connected intellective protector at the both ends of anode and cathode, can be prepared by finished product high capacity 18650
Lithium battery.
Further, the stirring condition of the blender in S1 is temperature at 35~75 DEG C.Time is 1~3 hour.
Further, the temperature of the baking in S3 is 70~100 DEG C, and pressure is -50 to -90MPa, is toasted 8~12 hours.
Comparative example: 18650 lithium batteries made of common electrolyte.
According to GBT 31485-2015 power accumulator safety requirements for electric vehicle, comparative test calculates separately implementation
The theoretical capacity of example 1-3 and comparative example, test its actual capacity, and calculate its percentage with theoretical capacity, and compare
The performance detection data of test example 1-3 and comparative example, Experimental Comparison result are as shown in Figure 3.
In conclusion the lithium battery prepared using the electrolyte of environment-friendly type, not only green and pollution-free, but also lithium electricity
Pond can reach 85% or more of its theoretical capacity using capacity, and improve the safety of the lithium battery, charge-discharge magnification,
Comprehensive performance is high voltage, high safety, high magnification charge and discharge well beyond requirements of the national standard, and the bromine-containing compound energy being added
It enough effectively reduces battery and spontaneous combustion risk occurs, increase the safety that lithium battery uses.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. a kind of 18650 lithium battery of high capacity, including positive electrode, negative electrode material, electrolyte, shell and diaphragm, feature exist
In the positive electrode is divided by weight percentage: positive active material 85~92%, conductive agent 7~18%, adhesive 5~
12%, surplus is solvent；
The negative electrode material is divided by weight percentage: negative electrode active material 92~97%, adhesive 2~5%, thickener 1~5%,
Surplus is solvent；
The electrolyte is divided by weight percentage: toluene 21~25%, bromophenol 1~5%, dimethyl furan 25~31%, pyrroles
Alkanone 5~11%, sulfonyloxy methyl imines potassium 15~21%, lithium phosphate 1~5%, 2,4 dichloro benzene hydrazine hydrochloride 1~5%, p-phenylenediamine
Oxalates 2~5%, tribromoethane 2~7%, dibromo methylfuran 25~35%.
2. 18650 lithium battery of a kind of high capacity according to claim 1, which is characterized in that the positive electrode included
Positive active material be one of nickle cobalt lithium manganate, LiMn2O4, the conductive agent is graphene, and described adhesive is poly- inclined
Vinyl fluoride.
3. 18650 lithium battery of a kind of high capacity according to claim 1, which is characterized in that molten in the positive electrode
Agent is N-Methyl pyrrolidone, and the weight of solvent is the 65~92% of positive active material, conductive agent and adhesive gross weight.
4. 18650 lithium battery of a kind of high capacity according to claim 1, which is characterized in that the negative electrode material included
Negative electrode active material be one of graphite or sodium carboxymethylcellulose, described adhesive be one kind by butadiene and styrene
Butadiene-styrene rubber made of copolymerization is made, the thickener are hydroxypropyl methyl cellulose.
5. 18650 lithium battery of a kind of high capacity according to claim 1, which is characterized in that molten in the negative electrode material
Agent is pure water, and its weight be negative electrode active material, adhesive, thickener total weight 72~100%.
6. 18650 lithium battery of a kind of high capacity according to claim 1, which is characterized in that the preparation side of the electrolyte
Method is following steps:
A1: it by the compound than weighing each ingredient, is mixed by de-airing mixer, obtains mixed liquor；
A2: by the mixed liquor in A1 under the conditions of supersonic frequency is 1200Hz, ultrasonic time is 2 hours, further mixing, is obtained
To environment friendly flame-retardant electrolyte.
7. a kind of 18650 lithium battery of high capacity and its preparation process, feature described in -6 any one exist according to claim 1
In preparation process is following steps:
S1, ingredient: it is put into respectively after positive electrode and negative electrode material are measured in proportion and carries out filling at a high speed in two blenders
Divide stirring, the positive mixed slurry and cathode mixed slurry of certain viscosity is made；
S2, system material: and then again by S1 positive mixed slurry and cathode mixed slurry be directed respectively into positive mixer and cathode
In mixer, and it is added in positive mixer by taking out a certain amount of positive solvent in sealing Galvanized Iron Drum at normal temperatures and pressures,
Uniform stirring, mixing time are 30 minutes, obtain anode sizing agent, then a certain amount of cathode solvent is added in cathode blending bucket,
Even stirring, mixing time are 50 minutes, obtain negative electrode slurry；
S3, coating: the anode sizing agent prepared and negative electrode slurry are separately added into positive coating machine material and neutralize cathode coating machine material
In, anode sizing agent is coated in the surface density of 75~90g/ ㎡ by positive coating machine and is cut on the aluminium foil of required size,
It recycles cathode coating machine to be coated in negative electrode slurry with the surface density of 90~110g/ ㎡ to be cut on the copper foil of required size,
Then aluminium foil and copper foil are toasted using the baking oven on coating machine, obtains positive plate and negative electrode tab；
S4, winding: diaphragm paper being added among positive plate and negative electrode tab, and is wound into core by sutomatic winding machine, and
It is fixed in bottom rubberizing paper, set insulating trip, is then placed in shell and forms electrode；
S5, fluid injection: the core for being obtained environment friendly flame-retardant electrolyte injection S4 under conditions of hermetically sealed using automatic filling machine
It is interior, it is sealed after lid lid, and be separately connected intellective protector at the both ends of anode and cathode, can be prepared by finished product high capacity 18650
Lithium battery.
8. 18650 lithium battery of a kind of high capacity according to claim 7 and its preparation process, which is characterized in that the S1
In the stirring condition of blender be temperature at 35~75 DEG C, the time is 1~3 hour.
9. 18650 lithium battery of a kind of high capacity according to claim 7 and its preparation process, which is characterized in that the S3
In baking temperature be 70~100 DEG C, pressure be -50 arrive -90MPa, toast 8~12 hours.
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| CN110518155A (en) * | 2019-08-19 | 2019-11-29 | 大同新成新材料股份有限公司 | A kind of graphene lithium battery preparation method of good environmental protection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130284988A1 (en) * | 2010-08-11 | 2013-10-31 | Kri, Inc. | Method for lithium predoping, method for producing electrodes, and electric energy storage device using these methods |
| CN105185986A (en) * | 2015-08-14 | 2015-12-23 | 江苏腾方新能源科技有限公司 | High-capacity cylindrical 18650 lithium-ion battery and preparation method thereof |
| CN105336943A (en) * | 2015-11-24 | 2016-02-17 | 四川省有色冶金研究院有限公司 | Lithium battery formed on basis of lithium nickel manganese oxide and lithium titanate and preparation method of lithium battery |
| CN107834109A (en) * | 2017-11-24 | 2018-03-23 | 杨彬 | A kind of fire-retardant lithium battery electrolytes |
| CN107946644A (en) * | 2017-11-24 | 2018-04-20 | 杨彬 | A kind of environmental protection lithium battery electrolytes |
-
2018
- 2018-12-27 CN CN201811611052.7A patent/CN109713364A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130284988A1 (en) * | 2010-08-11 | 2013-10-31 | Kri, Inc. | Method for lithium predoping, method for producing electrodes, and electric energy storage device using these methods |
| CN105185986A (en) * | 2015-08-14 | 2015-12-23 | 江苏腾方新能源科技有限公司 | High-capacity cylindrical 18650 lithium-ion battery and preparation method thereof |
| CN105336943A (en) * | 2015-11-24 | 2016-02-17 | 四川省有色冶金研究院有限公司 | Lithium battery formed on basis of lithium nickel manganese oxide and lithium titanate and preparation method of lithium battery |
| CN107834109A (en) * | 2017-11-24 | 2018-03-23 | 杨彬 | A kind of fire-retardant lithium battery electrolytes |
| CN107946644A (en) * | 2017-11-24 | 2018-04-20 | 杨彬 | A kind of environmental protection lithium battery electrolytes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518155A (en) * | 2019-08-19 | 2019-11-29 | 大同新成新材料股份有限公司 | A kind of graphene lithium battery preparation method of good environmental protection |
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