CN105244470A - High-safety lithium ion laminated battery positive plate and preparation method thereof - Google Patents
High-safety lithium ion laminated battery positive plate and preparation method thereof Download PDFInfo
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- CN105244470A CN105244470A CN201510579723.6A CN201510579723A CN105244470A CN 105244470 A CN105244470 A CN 105244470A CN 201510579723 A CN201510579723 A CN 201510579723A CN 105244470 A CN105244470 A CN 105244470A
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- Prior art keywords
- positive plate
- lithium ion
- edge
- highly secure
- adhesive tape
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 49
- 238000000576 coating method Methods 0.000 claims abstract description 49
- 239000002390 adhesive tape Substances 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims abstract description 6
- 230000001070 adhesive effect Effects 0.000 claims abstract description 6
- 239000011888 foil Substances 0.000 claims abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007731 hot pressing Methods 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- 229910001593 boehmite Inorganic materials 0.000 claims description 3
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- 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
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a high-safety lithium ion laminated battery positive plate, which is formed by laminating a high-safety lithium ion laminated battery positive plate, a negative plate and a diaphragm, wherein the positive plate comprises an adhesive insulating coating, an insulating high-temperature adhesive tape, a positive coating area and a tab, and the preparation method comprises the following steps: firstly, a certain width of margin is longitudinally reserved during coating, and a certain width of adhesive insulating coating is coated at the boundary of the margin edge and the coating; secondly, cutting off a certain width of the rolled pole piece edge, reserving a foil with a certain width as a tab, and splitting; finally, cutting, namely transversely sticking an insulating high-temperature adhesive tape at a cutting position, and cutting along the middle of the insulating high-temperature adhesive tape to form a high-safety lithium ion laminated battery positive plate; the preparation method can meet the requirement of automatic operation and has high efficiency.
Description
Technical field
The invention belongs to technical field of lithium ion, specifically a kind of highly secure lithium ion laminated batteries positive plate and preparation method thereof.
Background technology
From 1991; the invention of Sony Corporation of Japan has developed lithium rechargeable battery and since commercialization; lithium ion battery development rapidly; its range of application expanding day; occupation rate of market improves day by day; particularly along with arrival and the ambient pressure expanding day of energy crisis, lithium ion battery is applied on electric automobile as power source, and the demand of market to lithium ion battery is expanded further.The application of lithium ion battery on electric automobile to the requirement of battery performance considerably beyond consumption market battery, should high-energy-density, again high power density, require also very high to security performance simultaneously.Lithium ion battery process structure point mainly contains lamination and convoluted, laminated type lithium ion battery every layer has lug to draw, and the internal resistance of cell is less, and power-performance is good; And internal electric field is evenly distributed, be conducive to performance, be relatively applicable to doing electrokinetic cell from performance and be applied on electric automobile, but the normally die-cut preparation of pole piece of laminated battery, its burrs on edges is comparatively large, is easy to pierce through barrier film, cause both positive and negative polarity short circuit, form potential safety hazard.
Summary of the invention
The object of the present invention is to provide a kind of highly secure lithium ion laminated batteries positive plate and preparation method thereof, improve fail safe.Object of the present invention can be achieved through the following technical solutions:
A kind of highly secure lithium ion laminated batteries positive plate, highly secure lithium ion laminated batteries is laminated by highly secure lithium ion laminated batteries positive plate, negative plate, barrier film, and positive plate comprises the viscosity insulating coating being applied to longitudinal edge, the dielectric high temperature adhesive tape being affixed on transverse edge, positive electrode coating region and lug.
Preferably, described viscosity insulating coating is mixed by one or more in aluminium oxide, silica, silicon nitride, boehmite and thermoplastic adhesive.
Further, the width in described positive electrode coating region and length are compared with the little 1 ~ 4mm of negative pole, described positive electrode coating region adds the overall width comparatively large 1 ~ 4mm of negative plate of viscosity insulating coating, the total length comparatively large 1 ~ 4mm of negative plate of described positive electrode coating region and dielectric high temperature adhesive tape.
A kind of highly secure lithium ion laminated batteries positive plate preparation method, comprises the following steps:
Longitudinally stay staying of 15 ~ 30mm white during the coating of S1, positive plate, and the viscosity insulating coating staying white edge edge and coating intersection to be coated with 3 ~ 6mm;
Pole piece edge after S2, positive plate roll-in stays white cut to remove one fixed width, stays the foil of one fixed width to make lug;
S3, positive plate itemize and cut, laterally paste the dielectric high temperature adhesive tape that width is 6 ~ 12mm cutting position, form highly secure lithium ion laminated batteries positive plate in the middle of dielectric high temperature adhesive tape after cutting off.
Together with the positive plate of upper described preparation and barrier film, negative plate are stacked, the corresponding positive plate viscosity insulating coating centre position of longitudinal edge of negative plate, the corresponding dielectric high temperature adhesive tape centre position of transverse edge of negative plate, after 70 ~ 85 DEG C of hot pressing, positive plate edge is bonded together.
Beneficial effect of the present invention: can effectively be bonded together after the positive plate of edge viscosity insulating coating and barrier film, the stacked rear hot pressing of negative plate, solve pole piece of laminated battery to be shifted the safety problem brought, edge exhausted viscosity edge coating and insulating tape efficiently avoid negative plate burrs on edges and pierce through the safety problem that barrier film causes both positive and negative polarity short circuit to bring; Its preparation method achieves continuous coating viscosity insulating coating can meet automation mechanized operation requirement, and efficiency is high.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.
Fig. 1 is highly secure lithium ion laminated batteries positive plate schematic diagram of the present invention.
Fig. 2 is highly secure lithium ion laminated batteries positive plate of the present invention coating schematic diagram.
Fig. 3 is highly secure lithium ion laminated batteries positive plate trimming of the present invention and cuts schematic diagram.
Fig. 4 is highly secure lithium ion laminated batteries positive plate rubberizing severing schematic diagram of the present invention.
In figure, 1, viscosity insulating coating; 2, dielectric high temperature adhesive tape; 3, positive electrode coating region; 4, lug.
Embodiment
As shown in Figure 1, the present invention discloses a kind of highly secure lithium ion laminated batteries positive plate, highly secure lithium ion laminated batteries is by highly secure lithium ion laminated batteries positive plate, negative plate, barrier film is laminated, positive plate comprises the viscosity insulating coating 1 being applied to longitudinal edge, be affixed on the dielectric high temperature adhesive tape 2 of transverse edge, positive electrode coating region 3 and lug 4, described viscosity insulating coating 1 material is aluminium oxide, silica, silicon nitride, one or more and thermoplastic adhesive's cohesive material mixture in boehmite, the corresponding positive plate viscosity insulating coating centre position of longitudinal edge of negative plate, the corresponding dielectric high temperature adhesive tape centre position of transverse edge of negative plate, after 70 ~ 85 DEG C of hot pressing, positive plate edge is bonded together.
As shown in Figure 2 to 4, the present invention discloses a kind of highly secure lithium ion laminated batteries positive plate preparation method, comprises the following steps:
Longitudinally stay staying of 15 ~ 30mm white during the coating of S1, positive plate, and the viscosity insulating coating staying white edge edge and coating intersection to be coated with 3 ~ 6mm;
Pole piece edge after S2, positive plate roll-in stays white cut to remove one fixed width, stays the foil of one fixed width to make lug;
S3, positive plate itemize and cut, laterally paste the dielectric high temperature adhesive tape that width is 6 ~ 12mm cutting position, form highly secure lithium ion laminated batteries positive plate in the middle of dielectric high temperature adhesive tape after cutting off.
Preparation method's normally lateral clearance formula coating of current pole piece of laminated battery, then pole piece is gone out by die-cut mode, cannot realize being coated with a layer insulating continuously when being coated with, as to the pole piece figure insulating barrier again after die-cut, efficiency is too low, is therefore that cost is high on the one hand by improving die cutting accuracy or the mode of using laser dicing instead reduces burr at present, can only reduce on the other hand, the safety problem that burr brings can not be solved completely.The present invention is by longitudinally staying white realization to be coated with viscosity insulating coating continuously, form positive plate by trimming and disconnected mode of cutting, viscosity insulating coating can in time being coated with together be coated with, paste insulating tape automatically can paste while severing pole piece, although add work step, do not increase man-hour.Therefore this preparation method can realize there is insulation protection on limit, positive pole edge four efficiently.By reasonably designing positive/negative plate; the width in positive electrode coating region and length are compared with the little 1 ~ 4mm of negative pole; positive electrode coating region adds the overall width comparatively large 1 ~ 4mm of negative plate of viscosity insulating coating; the total length comparatively large 1 ~ 4mm of negative plate of positive electrode coating region and dielectric high temperature adhesive tape; together with positive plate and barrier film, negative plate are stacked; the corresponding positive pole viscosity insulating coating centre position of longitudinal edge of negative plate; the corresponding dielectric high temperature adhesive tape centre position of transverse edge, only needs positive pole edge to have insulation protection just can solve the problem of pole piece burr completely.
In addition, after the battery stack of current lamination, in use procedure particularly high-strength vibration, be easy to slippage between layers, be exactly " displacement " phenomenon usually said, be coated with sticking adhesive insulation layer by positive plate, effectively can avoid " displacement " phenomenon.
Above content is only to structure example of the present invention and explanation; affiliated those skilled in the art make various amendment to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the structure of invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (5)
1. a highly secure lithium ion laminated batteries positive plate, it is characterized in that, highly secure lithium ion laminated batteries is laminated by highly secure lithium ion laminated batteries positive plate, negative plate, barrier film, and positive plate comprises the viscosity insulating coating being applied to longitudinal edge, the dielectric high temperature adhesive tape being affixed on transverse edge, positive electrode coating region and lug.
2. highly secure lithium ion laminated batteries positive plate according to claim 1, is characterized in that, described viscosity insulating coating is mixed by one or more in aluminium oxide, silica, silicon nitride, boehmite and thermoplastic adhesive.
3. highly secure lithium ion laminated batteries positive plate according to claim 1, it is characterized in that, the width in described positive electrode coating region and length are compared with the little 1 ~ 4mm of negative pole, described positive electrode coating region adds the overall width comparatively large 1 ~ 4mm of negative plate of viscosity insulating coating, the total length comparatively large 1 ~ 4mm of negative plate of described positive electrode coating region and dielectric high temperature adhesive tape.
4. highly secure lithium ion laminated batteries positive plate preparation method as claimed in claim 1, is characterized in that, comprise the following steps:
Longitudinally stay staying of 15 ~ 30mm white during the coating of S1, positive plate, and the viscosity insulating coating staying white edge edge and coating intersection to be coated with 3 ~ 6mm;
Pole piece edge after S2, positive plate roll-in stays white cut to remove one fixed width, stays the foil of one fixed width to make lug;
S3, positive plate itemize and cut, laterally paste the dielectric high temperature adhesive tape that width is 6 ~ 12mm cutting position, form highly secure lithium ion laminated batteries positive plate in the middle of dielectric high temperature adhesive tape after cutting off.
5. highly secure lithium ion laminated batteries positive plate according to claim 1, it is characterized in that, the corresponding positive plate viscosity insulating coating centre position of longitudinal edge of negative plate, the corresponding dielectric high temperature adhesive tape centre position of transverse edge of negative plate, after 70 ~ 85 DEG C of hot pressing, positive plate edge is bonded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510579723.6A CN105244470A (en) | 2015-09-11 | 2015-09-11 | High-safety lithium ion laminated battery positive plate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510579723.6A CN105244470A (en) | 2015-09-11 | 2015-09-11 | High-safety lithium ion laminated battery positive plate and preparation method thereof |
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| CN105244470A true CN105244470A (en) | 2016-01-13 |
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| CN201510579723.6A Pending CN105244470A (en) | 2015-09-11 | 2015-09-11 | High-safety lithium ion laminated battery positive plate and preparation method thereof |
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Cited By (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845885A (en) * | 2016-04-15 | 2016-08-10 | 合肥国轩高科动力能源有限公司 | Pole piece for laminated battery |
| CN106129327A (en) * | 2016-08-10 | 2016-11-16 | 欣旺达电子股份有限公司 | Anode slice of lithium ion battery and lithium ion battery |
| CN106340680A (en) * | 2016-08-31 | 2017-01-18 | 合肥国轩高科动力能源有限公司 | Manufacturing method and device of laminated battery unit |
| CN106654180A (en) * | 2016-12-29 | 2017-05-10 | 成都国珈星际固态锂电科技有限公司 | Battery pole piece and preparation method thereof and lithium-ion battery |
| CN106784848A (en) * | 2017-01-18 | 2017-05-31 | 江苏海四达电源股份有限公司 | Insulating coating composition, the preparation method of insulating coating, positive plate and lithium ion battery |
| CN107293796A (en) * | 2017-06-15 | 2017-10-24 | 力神动力电池系统有限公司 | A kind of lithium ion cell polar ear Protection glue band sticking structure and control technique |
| CN108306052A (en) * | 2018-03-06 | 2018-07-20 | 深圳前海优容科技有限公司 | A kind of battery core and its manufacturing method, battery and electronic device |
| CN108428854A (en) * | 2018-03-06 | 2018-08-21 | 深圳前海优容科技有限公司 | A kind of battery core and its manufacturing method, battery and electronic device |
| CN108511690A (en) * | 2018-03-06 | 2018-09-07 | 深圳前海优容科技有限公司 | A kind of battery core and its manufacturing method, battery and electronic device |
| CN109565069A (en) * | 2016-07-26 | 2019-04-02 | 日本电气株式会社 | Electrode assembly and its manufacturing method |
| CN109935773A (en) * | 2018-12-30 | 2019-06-25 | 万向一二三股份公司 | Lithium ion laminated battery |
| WO2019169557A1 (en) * | 2018-03-06 | 2019-09-12 | 深圳前海优容科技有限公司 | Cell and manufacturing method therefor, battery, and electronic device |
| CN110323403A (en) * | 2019-07-10 | 2019-10-11 | 江苏塔菲尔新能源科技股份有限公司 | A kind of safe extreme ear structure and preparation method thereof, lithium ion battery |
| CN110380002A (en) * | 2019-06-03 | 2019-10-25 | 江西力能新能源科技有限公司 | A kind of boehmite/alumina composite lithium ion battery coating pole piece |
| CN110692151A (en) * | 2017-06-01 | 2020-01-14 | 株式会社村田制作所 | Method for manufacturing secondary battery |
| CN111201646A (en) * | 2017-10-19 | 2020-05-26 | 远景Aesc能源元器件有限公司 | Method for producing electrode, and battery |
| CN111200099A (en) * | 2020-03-11 | 2020-05-26 | 湖南立方新能源科技有限责任公司 | Novel laminated battery and laminating method and preparation method thereof |
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