CN107994203A - A kind of insulating cement homogenization process of lithium ion battery extrusion coater - Google Patents
A kind of insulating cement homogenization process of lithium ion battery extrusion coater Download PDFInfo
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- CN107994203A CN107994203A CN201711073186.3A CN201711073186A CN107994203A CN 107994203 A CN107994203 A CN 107994203A CN 201711073186 A CN201711073186 A CN 201711073186A CN 107994203 A CN107994203 A CN 107994203A
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- insulating cement
- pvdf
- boehmite
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- slurry
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Cell Separators (AREA)
Abstract
The invention discloses a kind of insulating cement homogenization process of lithium ion battery extrusion coater, including S1：Selection, chooses the main raw material(s) boehmite and binding agent Kynoar of insulating cement（PVDF）；S2：Dehydration, by PVDF（HSV‑900）With boehmite（BMS‑05）Raw material is individually positioned in baking oven and is carried out dehydrating；S3：Stirring, by the PVDF after S2 is handled（HSV‑900）With boehmite（BMS‑05）Raw material and N methyl pyrrolidones（NMP）Solvent is placed in stirred tank and is sufficiently stirred；S4：Frosted and filtering, sand mill is first crossed after stock discharge and is sanded, then is filtered through 300 mesh filter screens；S5：Detection and storage, testing size viscosity, fineness, solid content, and qualified seal slurry is stored.Beneficial effects of the present invention：By optimizing insulating cement homogenate technique, slurry items characterisitic parameter is controlled, improves stability, the uniformity of insulating cement slurry, improves insulating cement glue-coated surface quality.
Description
Technical field
The present invention relates to lithium ion battery manufacturing field, it particularly relates to a kind of lithium ion battery extrusion coater
Insulating cement homogenization process.
Background technology
The general technological process of production of lithium ion battery is homogenate, coating, roll-in, slitting, cross cutting, winding/lamination, dress
Match somebody with somebody, dry, fluid injection, chemical conversion.Wherein easily produce burr in slitting, die cutting procedure, and can be because of material roll-in at coating edge after
Lateral extension or membrane are too narrow and cause positive and negative electrode active contacts, battery partial short-circuit situation, therefore some lithiums occur
Ion battery manufacturing enterprise can coat one layer absolutely at the active material region of positive and negative electrode painting process and lug boundary line position
Edge glue, with the generation of control of burr, avoids the positive and negative electrode active contacts at edge, improves the security performance of battery.
But the homogenate technique at present on insulating cement in lithium ion battery production is still not mature enough, in this respect
Production is also few, therefore adhesive process is analyzed and researched, Optimal improvements are necessary for insulation.
The problem of in correlation technique, not yet propose effective solution at present.
The content of the invention
For the above-mentioned technical problem in correlation technique, the present invention proposes a kind of the exhausted of lithium ion battery extrusion coater
Edge glue homogenization process, to overcome currently available technology above shortcomings.
To realize above-mentioned technical purpose, the technical proposal of the invention is realized in this way：
A kind of insulating cement homogenization process of lithium ion battery extrusion coater, comprises the following steps：
S1：Selection, chooses the main raw material(s) boehmite and binding agent Kynoar of insulating cement（PVDF）；
S2：Dehydration, by PVDF（HSV-900）With boehmite（BMS-05）Raw material is individually positioned in baking oven and is carried out dehydrating；
S3：Stirring, by the PVDF after S2 is handled（HSV-900）With boehmite（BMS-05）Raw material and N- crassitudes
Ketone（NMP）Solvent is placed in stirred tank and is sufficiently stirred；
S4：Frosted and filtering, sand mill is first crossed after stock discharge and is sanded, after 300 mesh filter screens, ensures slurry without tiny
Grain；
S5：Detection and storage, its viscosity, fineness, solid content are tested to the slurry after S4, when the test parameter of slurry meets
After requirement, slurry is sealed and is stored.
Further, the PVDF（HSV-900）With boehmite（BMS-05）Quality proportioning be 9:1.
Further, baking temperature is 120 DEG C to the PVDF in an oven, the baking temperature of the boehmite in an oven
For 200 DEG C.
Further, the S3 includes：
S3-1：The bright nurse stone is divided into 3 parts, is 2 parts by the PVDF points, suitable N- methyl pyrrole is first added in stirred tank
Pyrrolidone（NMP）Solvent, adds 1 part of boehmite, first opens revolution and is stirred 2-3min, rotating speed 10r/min, rear to open
Rotation carries out scattered 3-5min, rotational velocity 600r/min；
S3-2：1 part of boehmite is added, revolution 2-3min is first carried out under the revolution speed of 10r/min, it is rear to open rotation progress
Scattered 3-5min, rotational velocity 600r/min；
S3-3：1 part of boehmite is added again, revolution 2-3min is first carried out under the revolution speed of 10r/min, and rear open rotates into certainly
Row scattered 3-5min, rotational velocity 1000r/min；
S3-4：1 part of PVDF is added, revolution 2-3min is first carried out under the revolution speed of 10r/min, it is rear to open rotation progress
Scattered 3-5min, rotational velocity 1000r/min；
S3-5：1 part of PVDF is added again, revolution 2-3min is first carried out under the revolution speed of 10r/min, and rear open rotates into certainly
Row scattered 3-5min, rotational velocity 1000r/min；
S3-6：Stop stirring carrying out scraping slurry, scrape and stirred tank is evacuated to -85KPa ~ -100KPa after starching, revolution rotating speed is set
For 20r/min, rotation rotating speed is 2200r/min, and stirring certain time is to being sufficiently mixed.
Further, the insulating cement range of viscosities is 500mPas-1000mPas, and fineness is less than 15 μm, solid content
For 25%-33%.
Beneficial effects of the present invention：By optimizing insulating cement homogenate technique, slurry items characterisitic parameter is controlled, improves insulation
Stability, the uniformity of rubber cement material, improve insulating cement glue-coated surface quality.
Embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this area is common
Technical staff's all other embodiments obtained, belong to the scope of protection of the invention.
The insulating cement homogenization process of a kind of lithium ion battery extrusion coater according to embodiments of the present invention, including
Following steps：
S1：Selection, chooses the main raw material(s) boehmite and binding agent Kynoar of insulating cement（PVDF）, control boehmite with
Binding agent Kynoar（PVDF）Mass ratio be 9:1.
S2：Dehydration, to PVDF（HSV-900）With boehmite（BMS-05）Raw material is carried out dehydrating, and PVDF is in an oven
Toast 2h at 120 DEG C, boehmite toasts 2h at 200 DEG C in an oven.
S3：Stirring, by the PVDF after S2 is handled（HSV-900）With boehmite（BMS-05）Raw material and N- methyl pyrroles
Pyrrolidone（NMP）Solvent is placed in stirred tank and is sufficiently stirred；Including：
S3-1：116.7kg 1-methyl-2-pyrrolidinones are first added in stirred tank（NMP）Solvent, adds 15kg boehmites, first
Open revolution and be stirred 2min, rotating speed 10r/min, rear unlatching rotation carries out scattered 3min, rotational velocity 600r/min；
S3-2：15kg boehmites are added, revolution 2min is first carried out under the revolution speed of 10r/min, it is rear to open rotation progress
Scattered 5min, rotational velocity 600r/min；
S3-3：15kg boehmites are added again, revolution 2min is first carried out under the revolution speed of 10r/min, and rear open rotates into certainly
Row scattered 5min, rotational velocity 1000r/min；
S3-4：2.5kg PVDF are added, revolution 2min is first carried out under the revolution speed of 10r/min, it is rear to open rotation progress
Scattered 3min, rotational velocity 1000r/min；
S3-5：2.5kg PVDF are added again, revolution 2min is first carried out under the revolution speed of 10r/min, and rear open rotates into certainly
Row scattered 5min, rotational velocity 1000r/min；
S3-6：Stop stirring carrying out scraping slurry, scrape and stirred tank is evacuated to -85KPa ~ -100KPa after starching, revolution rotating speed is set
For 20r/min, rotation rotating speed is 2200r/min, and 4h is to being sufficiently mixed for stirring.
S4：Frosted and filtering, sand mill is first crossed after stock discharge and is sanded, and number is eight times, after 300 mesh filter screens,
Ensure slurry without fine particle.
S5：Detection and storage, test its viscosity, fineness, solid content, when the test parameter of slurry to the slurry after S4
It is 500mPas-1000mPas to meet range of viscosities, and fineness is less than 15 μm, after solid content is 25%-33%, slurry is sealed
Storage.
By the above method, optimize the insulating cement homogenization process of lithium ion battery extrusion coater, control slurry every
Characterisitic parameter, improves stability, the uniformity of insulating cement slurry, improves insulating cement glue-coated surface quality.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (5)
1. a kind of insulating cement homogenization process of lithium ion battery extrusion coater, it is characterised in that comprise the following steps：
S1：Selection, chooses the main raw material(s) boehmite and binding agent Kynoar of insulating cement（PVDF）；
S2：Dehydration, by PVDF（HSV-900）With boehmite（BMS-05）Raw material is individually positioned in baking oven and is carried out dehydrating；
S3：Stirring, by the PVDF after S2 is handled（HSV-900）With boehmite（BMS-05）Raw material and N- crassitudes
Ketone（NMP）Solvent is placed in stirred tank and is sufficiently stirred；
S4：Frosted and filtering, sand mill is first crossed after stock discharge and is sanded, after 300 mesh filter screens, ensures slurry without tiny
Grain；
S5：Detection and storage, its viscosity, fineness, solid content are tested to the slurry after S4, when the test parameter of slurry meets
After requirement, slurry is sealed and is stored.
2. a kind of insulating cement homogenization process of lithium ion battery extrusion coater according to claim 1, its feature exist
In the PVDF（HSV-900）With boehmite（BMS-05）Quality proportioning be 9:1.
3. a kind of insulating cement homogenization process of lithium ion battery extrusion coater according to claim 1, its feature exist
In baking temperature is 120 DEG C to the PVDF in an oven, and the baking temperature of the boehmite in an oven is 200 DEG C.
4. a kind of insulating cement homogenization process of lithium ion battery extrusion coater according to claim 1 any one,
It is characterized in that, the S3 includes：
S3-1：The bright nurse stone is divided into 3 parts, is 2 parts by the PVDF points, suitable N- methyl pyrrole is first added in stirred tank
Pyrrolidone（NMP）Solvent, adds 1 part of boehmite, first opens revolution and is stirred 2-3min, rotating speed 10r/min, rear to open
Rotation carries out scattered 3-5min, rotational velocity 600r/min；
S3-2：1 part of boehmite is added, revolution 2-3min is first carried out under the revolution speed of 10r/min, it is rear to open rotation progress
Scattered 3-5min, rotational velocity 600r/min；
S3-3：1 part of boehmite is added again, revolution 2-3min is first carried out under the revolution speed of 10r/min, and rear open rotates into certainly
Row scattered 3-5min, rotational velocity 1000r/min；
S3-4：1 part of PVDF is added, revolution 2-3min is first carried out under the revolution speed of 10r/min, it is rear to open rotation progress
Scattered 3-5min, rotational velocity 1000r/min；
S3-5：1 part of PVDF is added again, revolution 2-3min is first carried out under the revolution speed of 10r/min, and rear open rotates into certainly
Row scattered 3-5min, rotational velocity 1000r/min；
S3-6：Stop stirring carrying out scraping slurry, scrape and stirred tank is evacuated to -85KPa ~ -100KPa after starching, revolution rotating speed is set
For 20r/min, rotation rotating speed is 2200r/min, and stirring certain time is to being sufficiently mixed.
5. a kind of insulating cement homogenization process of lithium ion battery extrusion coater according to claim 1, its feature exist
In the insulating cement range of viscosities is 500mPas-1000mPas, and fineness is less than 15 μm, solid content 25%-33%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711073186.3A CN107994203A (en) | 2017-11-04 | 2017-11-04 | A kind of insulating cement homogenization process of lithium ion battery extrusion coater |
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| CN201711073186.3A CN107994203A (en) | 2017-11-04 | 2017-11-04 | A kind of insulating cement homogenization process of lithium ion battery extrusion coater |
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| CN107994203A true CN107994203A (en) | 2018-05-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982748A (en) * | 2020-07-31 | 2020-11-24 | 同济大学 | Performance detection method of proton exchange membrane fuel cell catalyst slurry |
| CN112700417A (en) * | 2020-12-31 | 2021-04-23 | 广东美的白色家电技术创新中心有限公司 | Sole gluing method and device and computer readable storage medium |
| CN113471578A (en) * | 2021-06-04 | 2021-10-01 | 苏州领湃新能源科技有限公司 | Power energy storage battery shell, preparation method and battery |
| CN116925604A (en) * | 2022-04-08 | 2023-10-24 | 宁德时代新能源科技股份有限公司 | Insulating adhesive, black light-absorbing composition and battery cell |
-
2017
- 2017-11-04 CN CN201711073186.3A patent/CN107994203A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982748A (en) * | 2020-07-31 | 2020-11-24 | 同济大学 | Performance detection method of proton exchange membrane fuel cell catalyst slurry |
| CN112700417A (en) * | 2020-12-31 | 2021-04-23 | 广东美的白色家电技术创新中心有限公司 | Sole gluing method and device and computer readable storage medium |
| CN113471578A (en) * | 2021-06-04 | 2021-10-01 | 苏州领湃新能源科技有限公司 | Power energy storage battery shell, preparation method and battery |
| CN113471578B (en) * | 2021-06-04 | 2023-03-14 | 湖南领湃达志科技股份有限公司 | Power energy storage battery shell, preparation method and battery |
| CN116925604A (en) * | 2022-04-08 | 2023-10-24 | 宁德时代新能源科技股份有限公司 | Insulating adhesive, black light-absorbing composition and battery cell |
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Application publication date: 20180504 |