CN106384846A - Method for coating battery core of lithium battery with solid diaphragm adhesive in insulation manner - Google Patents
Method for coating battery core of lithium battery with solid diaphragm adhesive in insulation manner Download PDFInfo
- Publication number
- CN106384846A CN106384846A CN201610897007.7A CN201610897007A CN106384846A CN 106384846 A CN106384846 A CN 106384846A CN 201610897007 A CN201610897007 A CN 201610897007A CN 106384846 A CN106384846 A CN 106384846A
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- Prior art keywords
- lithium battery
- battery
- electric core
- insulation coating
- battery core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of lithium batteries, and particularly relates to a method for coating a battery core of a lithium battery with a solid diaphragm adhesive in an insulation manner. The method comprises the following steps of (1), superimposing a positive plate and a negative plate to form a bare battery core, and fixing the bare battery core; (2), uniformly coating the edge of the bare battery core with the diaphragm adhesive, controlling a coating thickness to be 0.5mm to 1.0mm, and oven-drying and solidifying the diaphragm adhesive. According to the method for coating the battery core of the lithium battery with the solid diaphragm adhesive in the insulation manner, the edge of the battery core of the lithium battery is uniformly coated by utilizing the diaphragm adhesive; burrs on the edge of the battery core are clad and fixed; the short circuit of the lithium battery, which is generated due to the burrs, is avoided; therefore, the short-circuit rate of the lithium battery is decreased; moreover, an operation method of the method for coating the battery core of the lithium battery with the solid diaphragm adhesive in the insulation manner is simple; the short-circuit rate is effectively decreased to 1.5 percent; meanwhile, the service life and the safety performance of the battery are prolonged and improved; the method for coating the battery core of the lithium battery with the solid diaphragm adhesive in the insulation manner has an important meaning for promoting the application and the development of the battery.
Description
Technical field
The present invention relates to technical field of lithium batteries is and in particular to a kind of insulation of solid membrane glue is coated with the side of lithium battery electric core
Method.
Background technology
Lithium battery is a class by lithium metal or lithium alloy be negative material, the battery using non-aqueous electrolytic solution.1912
Year lithium metal battery is proposed and is studied by Gilbert N. Lewis earliest.During 20 century 70, M. S. Whittingham
Propose and begin one's study lithium ion battery.Due to the chemical characteristic of lithium metal very active so that the processing of lithium metal, preservation,
Use, very high to environmental requirement.So, lithium battery is not applied for a long time.With scientific and technical development, present lithium electricity
Pond has had become as main flow.
Lithium battery is broadly divided into two classes：Lithium metal battery and lithium ion battery.Lithium ion battery does not contain metallic state
Lithium, and can charge.5th generation product lithium metal battery of rechargeable battery was born in 1996, its safety, ratio
Capacity, self-discharge rate and the ratio of performance to price are superior to lithium ion battery.Because the high-tech of its own requires to limit, now only
The company of a few countries is producing this lithium metal battery.
Lithium battery generally has two kinds of external forms：Column type and square.Inside battery adopts helically wound structures, with one kind very
Fine and the very strong polyethylene film isolated material of permeability forms in positive and negative pole spacing.Positive pole is included by cobalt acid lithium（Or nickel
Cobalt manganic acid lithium, LiMn2O4, LiFePO 4 etc.）And the current collector of aluminium foil composition.Negative pole is by graphitized carbon material and Copper Foil
The current collector composition of composition.It is filled with organic electrolyte solution in battery.In addition it is also equipped with relief valve and PTC-element（Part
Column type uses）, so that battery protects the battery from abnormal state and output short-circuit damaging.
An important ring in the preparation technology that the coating process of lithium battery is prepared as lithium battery, the property with prepared lithium battery
Can be closely related.On the other hand, due to electrode plates in the restriction due to process equipment so that electrode plates edge produce hair
Thorn, and burr is dealt with improperly, then lithium battery can be led to short-circuit in use, seriously even sets off an explosion.Therefore, the present invention
Proposing a kind of method of solid membrane glue insulation coating lithium battery electric core, solving the short circuit problem causing because of burr, thus dropping
The short circuit ratio of low lithium battery.
Content of the invention
It is an object of the invention to solving above technical problem, provide a kind of solid membrane glue insulation coating lithium battery electric core
Method, by the edge-coating solid membrane glue in lithium battery electric core, fixing simultaneously coat burr, solve to cause because of burr
Short circuit problem, improves safety and the service life of lithium battery, reduces the short circuit ratio of lithium battery.
For solving the above problems, the present invention employs the following technical solutions：
A kind of method of solid membrane glue insulation coating lithium battery electric core, including following preparation process：
（1）Positive plate and negative plate superposition are formed naked battery core, fixing；
（2）Barrier film glue is uniformly coated on the edge of naked battery core, coating thickness controls in 0.5-1.0mm, dries, solidification.
Further, described step（1）Positive plate and negative plate before superposition, are first coated active material and electrolysis
Matter.
Further, described positive plate material be cobalt acid lithium, ternary, any one in LiMn2O4.
Further, described negative plate material is graphite.
Further, the viscosity of described barrier film glue is 800-2000mPa s.
Further, the raw material of described barrier film glue includes point component A of 20-50 weight portion and component B of 5-20 weight portion,
Component A is at least one in PE, PET, PP, PVC, CPVC, component B is fluorobenzene, ethyl acetate, in oxolane at least one
Kind.
Further, the raw material of described barrier film glue also includes antioxidant and the surfactant of 0.5-3 weight portion.
Further, described step（2）Middle drying is to carry out at 45-65 DEG C.
A kind of method of present invention solid membrane glue insulation coating lithium battery electric core, compared with prior art, it projects
Feature and excellent effect are：
1. the present invention utilizes barrier film glue even spread lithium battery electric core edge, coats and fix the burr at battery core edge, it is to avoid
The lithium battery short circuit producing because of burr, thus reduce the short circuit ratio of lithium battery.
2. the operational approach of the present invention is simple, effectively short circuit ratio is reduced to 1.5%, improves the use longevity of battery simultaneously
Life and security performance, significant to the application development promoting battery.
Specific embodiment
Below by way of specific embodiment, the present invention is described in further detail, but this should not be interpreted as the present invention
Scope be only limitted to Examples below.In the case of without departing from said method thought of the present invention, according to ordinary skill
Various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of method of solid membrane glue insulation coating lithium battery electric core：
（1）By positive plate and negative plate coating active material and electrolyte, then superposition forms naked battery core, fixing；
（2）Barrier film glue is uniformly coated on the edge of naked battery core, coating thickness controls in 0.5mm, dries at 45 DEG C, solidification.
Described positive plate material is cobalt acid lithium, and negative plate material is graphite, and the viscosity of barrier film glue is 800mPa s, barrier film
The raw material of glue includes point antioxidant of component A of 20 weight portions, component B of 5 weight portions and 0.5 weight portion and a surface activity
The mixture of agent, component A is the mixture of PE, PET and PP, and component B is fluorobenzene, oxolane.
Embodiment 2
A kind of method of solid membrane glue insulation coating lithium battery electric core：
（1）By positive plate and negative plate coating active material and electrolyte, then superposition forms naked battery core, fixing；
（2）Barrier film glue is uniformly coated on the edge of naked battery core, coating thickness controls in 1.0mm, dries at 65 DEG C, solidification.
Described positive plate material is LiMn2O4, and negative plate material is graphite, and the viscosity of barrier film glue is 2000mPa s, barrier film
The raw material of glue includes point antioxidant of component A of 50 weight portions, component B of 20 weight portions and 3 weight portions and a surface activity
The mixture of agent, component A is the mixture of PE, PET, PP, PVC and CPVC, and component B is fluorobenzene, oxolane and ethyl acetate
Mixture.
Embodiment 3
A kind of method of solid membrane glue insulation coating lithium battery electric core：
（1）By positive plate and negative plate coating active material and electrolyte, then superposition forms naked battery core, fixing；
（2）Barrier film glue is uniformly coated on the edge of naked battery core, coating thickness controls in 0.8mm, dries at 60 DEG C, solidification.
Described positive plate material is ternary, and negative plate material is graphite, and the viscosity of barrier film glue is 1200mPa s, barrier film glue
Raw material include point antioxidant of component A of 35 weight portions, component B of 10 weight portions and 2.1 weight portions and a surface activity
The mixture of agent, component A is CPVC, and component B is fluorobenzene, oxolane.
Embodiment 4
A kind of method of solid membrane glue insulation coating lithium battery electric core：
（1）By positive plate and negative plate coating active material and electrolyte, then superposition forms naked battery core, fixing；
（2）Barrier film glue is uniformly coated on the edge of naked battery core, coating thickness controls in 0.6mm, dries at 55 DEG C, solidification.
Described positive plate material is cobalt acid lithium, and negative plate material is graphite, and the viscosity of barrier film glue is 1100mPa s, barrier film
The raw material of glue includes point antioxidant of component A of 40 weight portions, component B of 16 weight portions and 2.4 weight portions and lives in surface
Property agent mixture, component A be PE, PP and PVC mixture, component B be fluorobenzene, oxolane and ethyl acetate mixing
Thing.
Embodiment 5
A kind of method of solid membrane glue insulation coating lithium battery electric core：
（1）By positive plate and negative plate coating active material and electrolyte, then superposition forms naked battery core, fixing；
（2）Barrier film glue is uniformly coated on the edge of naked battery core, coating thickness controls in 0.5mm, dries at 50 DEG C, solidification.
Described positive plate material is cobalt acid lithium, and negative plate material is graphite, and the viscosity of barrier film glue is 1400mPa s, barrier film
The raw material of glue includes point antioxidant of component A of 38 weight portions, component B of 12 weight portions and 1.6 weight portions and lives in surface
Property agent mixture, component A is the mixture of PE, PET, PP and PVC, component B is fluorobenzene, oxolane and ethyl acetate mixed
Compound.
Claims (8)
1. a kind of method of solid membrane glue insulation coating lithium battery electric core is it is characterised in that comprise the following steps：
（1）Positive plate and negative plate superposition are formed naked battery core, fixing；
（2）Barrier film glue is uniformly coated on the edge of naked battery core, coating thickness controls in 0.5-1.0mm, dries, solidification.
2. a kind of method of solid membrane glue insulation coating lithium battery electric core according to claim 1 is it is characterised in that institute
State step（1）Positive plate and negative plate before superposition, are first coated active material and electrolyte.
3. the method for a kind of solid membrane glue insulation coating lithium battery electric core according to claim 1 and 2, its feature exists
In, described positive plate material be cobalt acid lithium, any one in ternary, LiMn2O4, negative plate material is graphite.
4. the method for a kind of solid membrane glue insulation coating lithium battery electric core according to claim 1 and 2, its feature exists
In described negative plate material is graphite.
5. a kind of method of solid membrane glue insulation coating lithium battery electric core according to claim 1 is it is characterised in that institute
The viscosity stating barrier film glue is 800-2000mPa s.
6. a kind of method of solid membrane glue insulation coating lithium battery electric core according to claim 5 is it is characterised in that institute
The raw material stating barrier film glue includes point component A of 20-50 weight portion and component B of 5-20 weight portion, component A be PE, PET, PP,
At least one in PVC, CPVC, component B is fluorobenzene, ethyl acetate, at least one in oxolane.
7. a kind of method of solid membrane glue insulation coating lithium battery electric core according to claim 6 is it is characterised in that institute
The raw material stating barrier film glue also includes antioxidant and the surfactant of 0.5-3 weight portion.
8. a kind of method of solid membrane glue insulation coating lithium battery electric core according to claim 1 is it is characterised in that institute
State step（2）Middle drying is to carry out at 45-65 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610897007.7A CN106384846A (en) | 2016-10-14 | 2016-10-14 | Method for coating battery core of lithium battery with solid diaphragm adhesive in insulation manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610897007.7A CN106384846A (en) | 2016-10-14 | 2016-10-14 | Method for coating battery core of lithium battery with solid diaphragm adhesive in insulation manner |
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| CN106384846A true CN106384846A (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610897007.7A Pending CN106384846A (en) | 2016-10-14 | 2016-10-14 | Method for coating battery core of lithium battery with solid diaphragm adhesive in insulation manner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010952A (en) * | 2019-04-23 | 2019-07-12 | 无锡奥特维智能装备有限公司 | A kind of battery core stack equipment |
| CN111584947A (en) * | 2020-04-30 | 2020-08-25 | 浙江金非新能源科技有限公司 | Preparation method of lithium ion battery |
| CN111584946A (en) * | 2020-04-30 | 2020-08-25 | 浙江金非新能源科技有限公司 | Preparation method of lithium ion battery roll core |
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| CN2914338Y (en) * | 2005-10-18 | 2007-06-20 | 比亚迪股份有限公司 | Laminated positive plate of lithium ion secondary battery, pole core and battery thereof |
| CN101369674A (en) * | 2007-08-13 | 2009-02-18 | 黄穗阳 | Safe high-energy folding case lithium ion battery and its production technology |
| CN102299293A (en) * | 2011-07-22 | 2011-12-28 | 深圳市崧鼎科技有限公司 | Manufacturing method for battery electrode plates and battery manufactured by method |
| CN103700807A (en) * | 2013-11-29 | 2014-04-02 | 徐敖奎 | High-voltage lithium ion battery and preparation method thereof |
| CN105047937A (en) * | 2015-07-13 | 2015-11-11 | 曙鹏科技（深圳）有限公司 | Lithium battery core and fabrication method thereof |
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2016
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Patent Citations (6)
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|---|---|---|---|---|
| CN2914338Y (en) * | 2005-10-18 | 2007-06-20 | 比亚迪股份有限公司 | Laminated positive plate of lithium ion secondary battery, pole core and battery thereof |
| CN101369674A (en) * | 2007-08-13 | 2009-02-18 | 黄穗阳 | Safe high-energy folding case lithium ion battery and its production technology |
| CN102299293A (en) * | 2011-07-22 | 2011-12-28 | 深圳市崧鼎科技有限公司 | Manufacturing method for battery electrode plates and battery manufactured by method |
| CN103700807A (en) * | 2013-11-29 | 2014-04-02 | 徐敖奎 | High-voltage lithium ion battery and preparation method thereof |
| CN105047937A (en) * | 2015-07-13 | 2015-11-11 | 曙鹏科技（深圳）有限公司 | Lithium battery core and fabrication method thereof |
| CN105355956A (en) * | 2015-10-16 | 2016-02-24 | 广东烛光新能源科技有限公司 | Electrochemical cell and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010952A (en) * | 2019-04-23 | 2019-07-12 | 无锡奥特维智能装备有限公司 | A kind of battery core stack equipment |
| CN110010952B (en) * | 2019-04-23 | 2024-05-17 | 无锡奥特维智能装备有限公司 | Battery cell stacking equipment |
| CN111584947A (en) * | 2020-04-30 | 2020-08-25 | 浙江金非新能源科技有限公司 | Preparation method of lithium ion battery |
| CN111584946A (en) * | 2020-04-30 | 2020-08-25 | 浙江金非新能源科技有限公司 | Preparation method of lithium ion battery roll core |
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Application publication date: 20170208 |
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