CN103915646A - Flexible lithium ion battery - Google Patents
Flexible lithium ion battery Download PDFInfo
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- CN103915646A CN103915646A CN201410113230.9A CN201410113230A CN103915646A CN 103915646 A CN103915646 A CN 103915646A CN 201410113230 A CN201410113230 A CN 201410113230A CN 103915646 A CN103915646 A CN 103915646A
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- anode
- active material
- material layer
- cathode
- lithium ion
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 43
- 238000004806 packaging method and process Methods 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 239000006183 anode active material Substances 0.000 claims description 50
- 239000006182 cathode active material Substances 0.000 claims description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 35
- 230000004888 barrier function Effects 0.000 claims description 27
- 239000011889 copper foil Substances 0.000 claims description 25
- 239000005030 aluminium foil Substances 0.000 claims description 23
- -1 polyethylene Polymers 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 229920000573 polyethylene Polymers 0.000 claims description 16
- 239000004698 Polyethylene Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 239000003792 electrolyte Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 7
- 229920006254 polymer film Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 239000010406 cathode material Substances 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 2
- 239000013543 active substance Substances 0.000 abstract 5
- 239000010410 layer Substances 0.000 description 65
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 18
- 239000007767 bonding agent Substances 0.000 description 14
- 239000006258 conductive agent Substances 0.000 description 14
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 7
- 239000011888 foil Substances 0.000 description 7
- 239000003292 glue Substances 0.000 description 7
- 229920000297 Rayon Polymers 0.000 description 6
- 239000006230 acetylene black Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 description 4
- 239000002041 carbon nanotube Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 229920006332 epoxy adhesive Polymers 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229910052493 LiFePO4 Inorganic materials 0.000 description 2
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 2
- 229910018100 Ni-Sn Inorganic materials 0.000 description 2
- 229910018532 Ni—Sn Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- OVAQODDUFGFVPR-UHFFFAOYSA-N lithium cobalt(2+) dioxido(dioxo)manganese Chemical compound [Li+].[Mn](=O)(=O)([O-])[O-].[Co+2] OVAQODDUFGFVPR-UHFFFAOYSA-N 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 241001572350 Lycaena mariposa Species 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229910021483 silicon-carbon alloy Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
-
- 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
Abstract
The invention belongs to the technical field of a lithium ion battery, and particularly relates to a flexible lithium ion battery which is low in production cost and high in utilization rate of a cathode material. The flexible lithium ion battery comprises an anode ribbon with the width of 2mm to 20mm, a cathode ribbon with the width of 1mm to 19mm, an electrode assembly consisting of a diaphragm which is arranged between the anode ribbon and the cathode ribbon, a packaging bag and a cell support column, wherein the electrode assembly spirally winds the cell support column, both the cell support column and the electrode assembly are arranged in the packaging bag, an anode tab is welded on the anode ribbon, a cathode tab is welded on the cathode ribbon, and the cell support column is a bendable column body with an insulated surface. Compared with the prior art, both an anode active substance layer and a cathode active substance layer are arranged on an anode current collector and a cathode current collector in a simple coating manner, respectively, so that the process is simplified, and the production cost is reduced; moreover, the cathode active substance layer corresponds to the anode active substance layer, so that the utilization rate of a cathode active substance can be increased.
Description
Technical field
The invention belongs to technical field of lithium ion, relate in particular to the flexible lithium ion battery that a kind of production cost is low, the utilance of cathode material is higher.
Background technology
Wearable electronic equipment is attracting user's eyeball with its fashion, novel sense, as intelligent glasses, the commodity such as intelligent ring, Intelligent spire lamella and intelligent watch become one of focus of people's concern gradually.These electronic products different, they have also proposed different requirements to the shape of lithium ion battery, but they are that volume is little and need a certain amount of deformation to the common requirement of lithium ion battery.Under this background, there is flexible linear battery with its pliability and the characteristic that can combine shape according to product requirement, become the first-selection of Wearable electronic equipment.
LG company had not long ago reported a cable-type battery (seeing Advanced Materials), it is first wrapped in copper cash in circular columns in the mode of spiral, remove after cylinder, form cored screw type anode collector, then on copper cash sputter Ni-Sn alloy as anode active material, again at its surface parcel barrier film, then be wound around metal aluminum steel outward as cathode current collector at barrier film, on cathode current collector, brush again one deck cathode material, then be encapsulated in thermoplastic tube, after perfusion electrolyte, activate and become flexible wire battery.
The prepared battery of this manufacture craft has pliability, can be used for Wearable electronic equipment, but this technique also exists the place of blemish in an otherwise perfect thing:
The one, Ni-Sn alloy is to be arranged on copper cash by the method for sputter, and sputtering process is comparatively complicated, and needs special expensive equipment, and therefore production cost is higher;
The 2nd, metal aluminum steel is as cathode current collector, between spirally-wound copper cash and aluminum steel, there is space, the cathode material that part applies on aluminum steel is corresponding with it without anode active material, thereby causes the waste of cathode material, causes the utilance of cathode material lower.
Summary of the invention
The object of the invention is to: for the deficiencies in the prior art, and provide one can greatly improve cathode material service efficiency and there is good flexible flexible lithium ion battery.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of flexible lithium ion battery, the anode strap that to comprise by width be 2-20mm, width is the Ka band of 1-19mm, be arranged at the electrode assemblie of the barrier film composition between described anode strap and described Ka band, packaging bag, electrolyte and battery core pillar, described electrode assemblie is wrapped on described battery core pillar spirally, and described battery core pillar and described electrode assemblie are all arranged in described packaging bag, on described anode strap, be welded with anode lug, on described Ka band, be welded with cathode tab, described battery core pillar is set to surface insulation and flexible cylinder.
One as flexible lithium ion battery of the present invention is improved, and the diameter of described battery core pillar is 0.5-50mm, and its flexible radian is 0-180 °, and the pliability of whole battery is protected.
One as flexible lithium ion battery of the present invention is improved, and described battery core pillar is set to porous polymer cylinder or the metal cartridge through insulation processing.
One as flexible lithium ion battery of the present invention is improved, and the material of described metal cartridge is Copper Foil or aluminium foil, and the pliability of Copper Foil and aluminium foil is better.
One as flexible lithium ion battery of the present invention is improved, and described insulation processing is at metal cartridge surface-coated insulating cement or is coated with thin polymer film.When making, can be that the metal forming (Copper Foil or aluminium foil) of 30-100 μ m surrounds hollow metal tube by thickness, then apply insulating cement or be coated with thin polymer film at the outer surface of hollow metal tube.Applying insulating cement or coated polymer film is for anti-short circuit, and hollow metal tube not only has supporting role, and itself has pliability.Described thin polymer film is set to polyethylene film, polypropylene film or polycarbonate film.Thin polymer film can use conventional barrier film, and insulating cement is epoxy glue, polyurethane adhesive or polyimides glue etc.
One as flexible lithium ion battery of the present invention is improved, the material of described solid porous polymeric columns is that porosity is polyethylene, polypropylene, Merlon or the polyvinyl chloride of 30-80%, this polymeric columns not only has support effect, and due to its loose structure, also there is good imbibition and liquid storage performance, be conducive to improve the cycle performance of battery, and can also provide buffering for whole battery, reduce the deformation of battery in the time of external force collision.
One as flexible lithium ion battery of the present invention is improved, and described anode strap comprises anode collector and is coated on the anode active material layer of the single or double of described anode collector; Described Ka band comprises cathode current collector and is coated on the cathode active material layer of the single or double of described cathode current collector, and the width of described anode active material layer is than the large 0.5-1mm of the width of described cathode active material layer, the large 0.5-1mm of length of cathode active material layer described in the Length Ratio of described anode active material layer.To prevent the generation of the short circuit problem that separating out of Li dendrite cause.
Wherein, described anode collector is set to Copper Foil, and the thickness of described anode collector is 8-30 μ m, and described cathode current collector is set to aluminium foil, and the thickness of described cathode current collector is 10-40 μ m.Copper Foil and aluminium foil all have good pliability, and the thickness of Copper Foil and aluminium foil is too large, and pliability is good not, and the thickness of Copper Foil and aluminium foil is too little, and its supporting role of playing is inadequate again.
One as flexible lithium ion battery of the present invention is improved, when the one side coating cathode active material layer of cathode current collector, and when the one side of anode collector coating anode active material layer, described cathode active material layer and described anode active material layer are oppositely arranged, and discharge and recharge to realize normally.
One as flexible lithium ion battery of the present invention is improved, and its preparation comprises the following steps:
The first step, at the single or double coating anode active material layer of anode collector, after colding pressing, cuts into the anode strap that width is 2-20mm, is welded with anode lug on anode strap;
Second step, at the single or double coating cathode active material layer of cathode current collector, after colding pressing, cuts into the Ka band that width is 1-19mm, is welded with cathode tab on Ka band;
The 3rd step, choose a surface insulation and flexible cylindrical material as battery core pillar, the Ka band that anode strap, barrier film and the second step that the first step is made makes stacks successively, composition electrode assemblie, then described electrode assemblie is wrapped in spirally on described battery core pillar to (be anode strap, barrier film and Ka band as an one-piece auger be wrapped on battery core pillar), formation center is provided with the battery core of battery core pillar; Now, the shape of electrode assemblie is just as spring, and certainly, two ends of electrode assemblie need to be fixed with viscose glue etc.
The 4th step, the battery core that center is provided with to battery core pillar is placed in packaging bag, injects electrolyte, and activation, obtains flexible lithium ion battery.Cathode tab and anode lug can stretch out from the same direction of battery, also can stretch out from the different direction of battery, even can stretch out from the rightabout of battery.
Wherein, the manufacture method of electrode assemblie can also be: first, by three layers of barrier film composition barrier film bag, then Ka band and anode strap are respectively charged in barrier film bag, and ensure to be provided with barrier film between Ka band and anode strap.In this case, the peripheral coated thin polymer film of hollow metal tube is served as by one deck barrier film.
The 3rd step can also be in the following way: choose a surface insulation and flexible cylindrical material as battery core pillar, first Ka band or anode strap are wrapped on battery core pillar spirally, then put barrier film bag, and then on barrier film bag, twining anode strap or Ka band, formation center is provided with the battery core of battery core pillar.
Improve as the one of flexible lithium ion battery of the present invention, cutting described in the first step and second step is laser and cuts, and laser is cut has high, the easy-operating feature of precision.
In the present invention, anode active material layer comprises anode active material, conductive agent and bonding agent, wherein, anode active material is at least one in graphite, silicon and silicon alloy, conductive agent is at least one in superconduction carbon, acetylene black, carbon nano-tube and carbon fiber, and bonding agent is at least one in Kynoar and butadiene-styrene rubber.
Cathode active material layer comprises cathode active material, conductive agent and bonding agent, wherein, cathode active material is at least one in cobalt acid lithium, LiMn2O4, LiFePO4 and nickle cobalt lithium manganate, conductive agent is at least one in superconduction carbon, acetylene black, carbon nano-tube and carbon fiber, and bonding agent is at least one in Kynoar and butadiene-styrene rubber.
Barrier film is polyethylene film, polypropylene film or polyethylene/polypropylene/polyethylene laminated film.
In the present invention, the number of turns of spiral is greater than 2 circles, can select as required.
With respect to prior art, anode active material layer of the present invention and cathode active material layer are to be all separately positioned on anode collector and cathode current collector by simple coating, and without adopting sputter this complicated operation, technique that production cost is high, thereby simplify technique, reduced production cost; And cathode active material layer all has anode active material layer correspondence, thereby greatly improve the utilance of cathode active material.The battery that adopts method of the present invention to make has good pliability, can be as the energy supply person of Wearable electronic equipment.
Embodiment
Describe the present invention and beneficial effect thereof in detail below in conjunction with specific embodiment, still, embodiments of the invention are not limited to this.
Embodiment 1
A kind of flexible lithium ion battery that the present embodiment provides, the anode strap that to comprise by width be 5mm, width is the Ka band of 4.5mm, be arranged at the electrode assemblie of the barrier film composition between anode strap and Ka band, packaging bag, electrolyte and battery core pillar, electrode assemblie is wrapped on battery core pillar spirally, and battery core pillar and electrode assemblie are all arranged in packaging bag, on anode strap, be welded with anode lug, on Ka band, be welded with cathode tab, the hollow copper tubing that the external diameter that the metal copper foil that battery core pillar is is 50 μ m by thickness surrounds is 10mm, the periphery of hollow copper tubing scribbles the epoxy adhesive layer that a layer thickness is 10 μ m, the flexible radian of hollow copper tubing is 0-180 °.
Wherein, anode strap comprises that thickness is the Copper Foil of 20 μ m and the anode active material layer that is coated on the two sides of Copper Foil, anode active material layer comprises anode active material native graphite, bonding agent butadiene-styrene rubber and conductive agent superconduction carbon, and three's mass ratio is followed successively by 96:2:2; Ka band comprises that thickness is the aluminium foil of 20 μ m and the cathode active material layer that is coated on the two sides of aluminium foil, and cathode active material layer comprises cathode active material cobalt acid lithium, bonding agent Kynoar and conductive agent acetylene black, and three's mass ratio is followed successively by 96:2:2.
Its preparation method comprises the following steps:
The first step, is that the two sides of the Copper Foil of 20 μ m is coated with anode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 40 μ m, and laser cuts into the anode strap that width is 5mm, at the end welding anode lug of anode strap;
Second step, is that the two sides of the aluminium foil of 20 μ m is coated with cathode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 30 μ m, and laser cuts into the Ka band that width is 4.5mm, at the end welded cathode lug of Ka band;
The 3rd step, the metal copper foil that is 50 μ m by thickness surrounds the hollow copper tubing that an external diameter is 10mm, then coat the epoxy adhesive layer that a layer thickness is 10 μ m in the periphery of hollow copper tubing, surface is scribbled to the hollow copper tubing (flexible radian is 0-180 °) of epoxy adhesive layer as battery core pillar, the anode strap that the first step is obtained, thickness is that the polyethylene film of 16 μ m and Ka band that second step obtains stack successively, composition electrode assemblie, then this electrode assemblie is wrapped on battery core pillar spirally, formation center is provided with the battery core of battery core pillar, two ends employing viscose glues of electrode assemblie etc. are fixing, the number of turns of spiral is 10 circles, design the length of anode strap and Ka band as standard, and the length of anode diaphragm is greater than the length of negative electrode diaphragm, cathode tab and anode lug stretch out from the same direction of battery.
The 4th step, the battery core that center is provided with to battery core pillar is placed in packaging bag (as packaging foil), injects electrolyte, and activation, obtains flexible lithium ion battery.
Embodiment 2
A kind of flexible lithium ion battery that the present embodiment provides, the barrier film that the polyethylene film that to comprise by threeply degree be 12 μ m forms, width is that (Ka band and anode strap are positioned over respectively between two layers of polyethylene film for the electrode assemblie of the anode strap of 7mm and Ka band that width is 6.4mm composition, and between Ka band and anode strap across layer of polyethylene film), packaging bag and battery core pillar, electrode assemblie is wrapped on battery core pillar spirally, and battery core pillar and electrode assemblie are all arranged in packaging bag, on anode strap, be welded with anode lug, on Ka band, be welded with cathode tab, the hollow aluminum pipe that the external diameter that the metal aluminum foil that battery core pillar is is 70 μ m by thickness surrounds is 20mm, the insulating barrier of hollow aluminum pipe is served as by one deck barrier film that is positioned at inner side.The flexible radian of hollow aluminum pipe is 0-180 °.
Wherein, anode strap comprises that thickness is the Copper Foil of 12 μ m and the anode active material layer that is coated on the two sides of Copper Foil, anode active material layer comprises anode active material Delanium, bonding agent Kynoar and conductive agent carbon nano-tube, and three's mass ratio is followed successively by 95:3:2; Ka band comprises that thickness is the aluminium foil of 16 μ m and the cathode active material layer that is coated on the two sides of aluminium foil, and cathode active material layer comprises cathode active material lithium nickelate, bonding agent butadiene-styrene rubber and conductive agent carbon fiber, and three's mass ratio is followed successively by 98:1:1.
Its preparation method comprises the following steps:
The first step, is that the one side of the Copper Foil of 12 μ m is coated with anode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 30 μ m, and laser cuts into the anode strap that width is 7mm, at the end welding anode lug of anode strap;
Second step, is that the one side of the aluminium foil of 16 μ m is coated with cathode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 25 μ m, and laser cuts into the Ka band that width is 6.4mm, at the end welded cathode lug of Ka band;
The 3rd step, the metal aluminum foil that is 70 μ m by thickness surrounds the hollow aluminum pipe that an external diameter is 20mm, its flexible radian is 0-180 °, as battery core pillar, it is first the polyethylene film composition barrier film bag of 12 μ m by threeply degree, then the anode strap that Ka band second step being obtained and the first step obtain is respectively charged in barrier film bag, and ensure to be provided with barrier film between Ka band and anode strap, and cathode active material layer and anode active material layer are oppositely arranged, composition electrode assemblie, then this electrode assemblie is wrapped on battery core pillar spirally, formation center is provided with the battery core of battery core pillar, two ends employing viscose glues of electrode assemblie etc. are fixing, the number of turns of spiral is 20 circles, design the length of anode strap and Ka band as standard, and the length of anode diaphragm is greater than the length of negative electrode diaphragm, cathode tab and anode lug stretch out from the rightabout of battery.
The 4th step, the battery core that center is provided with to battery core pillar is placed in packaging bag (as packaging foil), injects electrolyte, and activation, obtains flexible lithium ion battery.
Embodiment 3
A kind of flexible lithium ion battery that the present embodiment provides, the anode strap that to comprise by width be 3mm, width is the Ka band of 2.2mm, be arranged at the electrode assemblie of the barrier film composition between anode strap and Ka band, packaging bag and battery core pillar, electrode assemblie is wrapped on battery core pillar spirally, and battery core pillar and electrode assemblie are all arranged in packaging bag, on anode strap, be welded with anode lug, on Ka band, be welded with cathode tab, battery core pillar is solid porous polymeric columns, the material of this cylinder is that porosity is 50% polyethylene, the flexible radian of this cylinder is 0-180 °.
Wherein, anode strap comprises that thickness is the Copper Foil of 30 μ m and the anode active material layer that is coated on the two sides of Copper Foil, anode active material layer comprises anode active material silicon, bonding agent butadiene-styrene rubber and conductive agent carbon nano-tube, and three's mass ratio is followed successively by 92:4:4; Ka band comprises that thickness is the aluminium foil of 30 μ m and the cathode active material layer that is coated on the two sides of aluminium foil, and cathode active material layer comprises cathode active material LiMn2O4, bonding agent Kynoar and conductive agent acetylene black, and three's mass ratio is followed successively by 95:2:3.
The preparation method of a kind of flexible lithium ion battery that the present embodiment provides, comprises the following steps:
The first step, is that the two sides of the Copper Foil of 30 μ m is coated with anode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 50 μ m, and laser cuts into the anode strap that width is 3mm, at the end welding anode lug of anode strap;
Second step, is that the two sides of the aluminium foil of 30 μ m is coated with cathode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 46 μ m, and laser cuts into the Ka band that width is 2.2mm, at the end welded cathode lug of Ka band;
The 3rd step, be that porosity is that 50% poly solid porous polymeric columns is as battery core pillar using material, its flexible radian is 0-180 °, the anode strap that the first step is obtained, thickness is that polyethylene/polypropylene/polyethylene laminated film of 20 μ m and Ka band that second step obtains stack successively, composition electrode assemblie, then this electrode assemblie is wrapped on battery core pillar spirally, formation center is provided with the battery core of battery core pillar, two ends employing viscose glues of electrode assemblie etc. are fixing, the number of turns of spiral is 15 circles, design the length of anode strap and Ka band as standard, and the length of anode diaphragm is greater than the length of negative electrode diaphragm, cathode tab and anode lug stretch out from the same direction of battery,
The 4th step, the battery core that center is provided with to battery core pillar is placed in packaging bag (as packaging foil), injects electrolyte, and activation, obtains flexible lithium ion battery.
Embodiment 4
A kind of flexible lithium ion battery that the present embodiment provides, the anode strap that to comprise by width be 2.3mm, width is the Ka band of 1.4mm, be arranged at the electrode assemblie of the barrier film composition between anode strap and Ka band, packaging bag and battery core pillar, electrode assemblie is wrapped on battery core pillar spirally, and battery core pillar and electrode assemblie are all arranged in packaging bag, on anode strap, be welded with anode lug, on Ka band, be welded with cathode tab, battery core pillar is solid porous polymeric columns, the material of this cylinder is that porosity is 70% polypropylene, the flexible radian of this cylinder is 0-180 °.
Wherein, anode strap comprises that thickness is the Copper Foil of 35 μ m and the anode active material layer that is coated on the two sides of Copper Foil, anode active material layer comprises anode active material silicon-carbon alloys, bonding agent butadiene-styrene rubber and conductive agent superconduction carbon, and three's mass ratio is followed successively by 97:2:1; Ka band comprises that thickness is the aluminium foil of 32 μ m and the cathode active material layer that is coated on the two sides of aluminium foil, and cathode active material layer comprises cathode active material LiFePO4, bonding agent Kynoar and conductive agent acetylene black, and three's mass ratio is followed successively by 97:1:2.
Its preparation method comprises the following steps:
The first step, is that the two sides of the Copper Foil of 35 μ m is coated with anode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 70 μ m, and laser cuts into the anode strap that width is 2.3mm, at the end welding anode lug of anode strap;
Second step, is that the two sides of the aluminium foil of 32 μ m is coated with cathode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 68 μ m, and laser cuts into the Ka band that width is 1.4mm, at the end welded cathode lug of Ka band;
The 3rd step, be that porosity is that 70% polyacrylic solid porous polymeric columns is as battery core pillar using material, the anode strap that the first step is obtained, thickness is that the polyethylene film of 16 μ m and Ka band that second step obtains stack successively, composition electrode assemblie, then this electrode assemblie is wrapped on battery core pillar spirally, two ends employing viscose glues of electrode assemblie etc. are fixing, the number of turns of spiral is 5 circles, design the length of anode strap and Ka band as standard, formation center is provided with the battery core of battery core pillar, cathode tab and anode lug stretch out from the same direction of battery,
The 4th step, the battery core that center is provided with to battery core pillar is placed in packaging bag (as packaging foil), injects electrolyte, and activation, obtains flexible lithium ion battery.
Embodiment 5
A kind of flexible lithium ion battery that the present embodiment provides, the anode strap that to comprise by width be 10mm, width is the Ka band of 9 mm, be arranged at the electrode assemblie of the barrier film composition between anode strap and Ka band, packaging bag and battery core pillar, electrode assemblie is wrapped on battery core pillar spirally, and battery core pillar and electrode assemblie are all arranged in packaging bag, on anode strap, be welded with anode lug, on Ka band, be welded with cathode tab, battery core pillar is solid porous polymeric columns, the material of this cylinder is that porosity is 30% polyvinyl chloride, the flexible radian of this cylinder is 0-180 °.
Wherein, anode strap comprises that thickness is the Copper Foil of 10 μ m and the anode active material layer that is coated on the two sides of Copper Foil, anode active material layer comprises anode active material native graphite, bonding agent butadiene-styrene rubber and conductive agent acetylene black, and three's mass ratio is followed successively by 95:2:3; Ka band comprises that thickness is the aluminium foil of 10 μ m and the cathode active material layer that is coated on the two sides of aluminium foil, cathode active material layer comprises cathode active material nickle cobalt lithium manganate, bonding agent Kynoar and conductive agent superconduction carbon, and three's mass ratio is followed successively by 94:3:3.
Its preparation method comprises the following steps:
The first step, is that the two sides of the Copper Foil of 10 μ m is coated with anode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 15 μ m, and laser cuts into the anode strap that width is 10mm, at the middle part of anode strap welding anode lug;
Second step, is that the two sides of the aluminium foil of 10 μ m is coated with cathode active material layer equably at thickness, and after colding pressing, the thickness of anode active material layer is 13 μ m, and laser cuts into the Ka band that width is 9mm, at the middle part of Ka band welded cathode lug;
The 3rd step, be that porosity is that the solid polymer cylindrical shape cylinder of 30% polyvinyl chloride is as battery core pillar using material, the anode strap first first step being obtained is wrapped on battery core pillar, then put the polythene film bag that thickness is 16 μ m, the Ka band again second step being obtained is wrapped on barrier film bag, formation center is provided with the battery core of battery core pillar, two ends employing viscose glues of electrode assemblie etc. are fixing, the number of turns of spiral is 30 circles, design the length of anode strap and Ka band as standard, and the length of anode diaphragm is greater than the length of negative electrode diaphragm, cathode tab and anode lug stretch out from the same direction of battery,
The 4th step, the battery core that center is provided with to battery core pillar is placed in packaging bag (as packaging foil), injects electrolyte, and activation, obtains flexible lithium ion battery.
It should be noted that, the announcement of book and instruction according to the above description, those skilled in the art in the invention can also change and revise above-mentioned execution mode.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection range of claim of the present invention equivalent modifications more of the present invention and change.Although used in addition some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (10)
1. a flexible lithium ion battery, it is characterized in that: the anode strap that to comprise by width be 2-20mm, width is the Ka band of 1-19mm, be arranged at the electrode assemblie of the barrier film composition between described anode strap and described Ka band, packaging bag, electrolyte and battery core pillar, described electrode assemblie is wrapped on described battery core pillar spirally, and described battery core pillar and described electrode assemblie are all arranged in described packaging bag, on described anode strap, be welded with anode lug, on described Ka band, be welded with cathode tab, described battery core pillar is set to surface insulation and flexible cylinder.
2. flexible lithium ion battery according to claim 1, is characterized in that: the diameter of described battery core pillar is 0.5-50mm, and its flexible radian is 0-180 °.
3. flexible lithium ion battery according to claim 1, is characterized in that: described battery core pillar is set to solid porous polymeric columns or the metal cartridge through insulation processing.
4. flexible lithium ion battery according to claim 3, is characterized in that: the material of described metal cartridge is Copper Foil or aluminium foil.
5. flexible lithium ion battery according to claim 3, is characterized in that: described insulation processing is at metal cartridge surface-coated insulating cement or is coated with thin polymer film.
6. flexible lithium ion battery according to claim 3, is characterized in that: the material of described porous polymer cylinder is that porosity is polyethylene, polypropylene, Merlon or the polyvinyl chloride of 30-80%.
7. flexible lithium ion battery according to claim 1, is characterized in that: described anode strap comprises anode collector and is coated on the anode active material layer of the single or double of described anode collector; Described Ka band comprises cathode current collector and is coated on the cathode active material layer of the single or double of described cathode current collector, and the width of described anode active material layer is than the large 0.5-1mm of the width of described cathode active material layer, the large 0.5-1mm of length of cathode active material layer described in the Length Ratio of described anode active material layer.
8. flexible lithium ion battery according to claim 7, it is characterized in that: when the one side coating cathode active material layer of cathode current collector, and when the one side of anode collector coating anode active material layer, described cathode active material layer and described anode active material layer are oppositely arranged.
9. according to the flexible lithium ion battery described in claim 1 to 8 any one, it is characterized in that, its preparation comprises the following steps:
The first step, at the single or double coating anode active material layer of anode collector, after colding pressing, cuts into the anode strap that width is 2-20mm, welds anode lug on anode strap;
Second step, at the single or double coating cathode active material layer of cathode current collector, after colding pressing, cuts into the Ka band that width is 1-19mm, welded cathode lug on Ka band;
The 3rd step, choose a surface insulation and flexible cylinder as battery core pillar, the Ka band that anode strap, barrier film and the second step that the first step is made makes stacks successively, composition electrode assemblie, then described electrode assemblie is wrapped on described battery core pillar spirally, formation center is provided with the battery core of battery core pillar;
The 4th step, the battery core that center is provided with to battery core pillar is placed in packaging bag, injects electrolyte, and activation, obtains flexible lithium ion battery.
10. flexible lithium ion battery according to claim 9, is characterized in that: cutting described in the first step and second step is laser and cuts.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016014554A1 (en) * | 2014-07-21 | 2016-01-28 | Flexel, Llc | Flexible micro-battery |
| CN105826558A (en) * | 2016-05-09 | 2016-08-03 | 复旦大学 | Flexible wearable water system lithium ion battery |
| US10879503B2 (en) | 2014-07-21 | 2020-12-29 | Johnson & Johnson Vision Care, Inc. | Methods for the manufacture of flexible microbatteries |
| CN113036150A (en) * | 2021-03-03 | 2021-06-25 | 珠海冠宇电池股份有限公司 | Current collector, battery pole piece and current collector manufacturing method |
| CN114156485A (en) * | 2020-09-07 | 2022-03-08 | 黄炳照 | Composite modification layer and application thereof in anode-free lithium battery |
| CN115483503A (en) * | 2021-06-15 | 2022-12-16 | 丽能电池有限公司 | Flexible lithium ion battery and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080076018A1 (en) * | 2006-09-22 | 2008-03-27 | Wu Donald P H | Core Structure for a Circular Lithium Secondary Battery |
| CN102804455A (en) * | 2011-03-16 | 2012-11-28 | 松下电器产业株式会社 | Wound battery and production method for same |
| CN103004002A (en) * | 2010-07-03 | 2013-03-27 | 株式会社杰士汤浅国际 | Battery and battery manufacturing method |
| CN203225307U (en) * | 2013-05-14 | 2013-10-02 | 东莞新能源科技有限公司 | Flexible lithium ion battery |
-
2014
- 2014-03-25 CN CN201410113230.9A patent/CN103915646B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080076018A1 (en) * | 2006-09-22 | 2008-03-27 | Wu Donald P H | Core Structure for a Circular Lithium Secondary Battery |
| CN103004002A (en) * | 2010-07-03 | 2013-03-27 | 株式会社杰士汤浅国际 | Battery and battery manufacturing method |
| CN102804455A (en) * | 2011-03-16 | 2012-11-28 | 松下电器产业株式会社 | Wound battery and production method for same |
| CN203225307U (en) * | 2013-05-14 | 2013-10-02 | 东莞新能源科技有限公司 | Flexible lithium ion battery |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016014554A1 (en) * | 2014-07-21 | 2016-01-28 | Flexel, Llc | Flexible micro-battery |
| CN107078233A (en) * | 2014-07-21 | 2017-08-18 | 庄臣及庄臣视力保护公司 | Flexible micro cell |
| RU2677630C1 (en) * | 2014-07-21 | 2019-01-18 | Джонсон Энд Джонсон Вижн Кэа, Инк. | Flexible microbattery |
| US10593911B2 (en) | 2014-07-21 | 2020-03-17 | Johnson & Johnson Vision Care, Inc. | Flexible micro-battery |
| US10879503B2 (en) | 2014-07-21 | 2020-12-29 | Johnson & Johnson Vision Care, Inc. | Methods for the manufacture of flexible microbatteries |
| CN105826558A (en) * | 2016-05-09 | 2016-08-03 | 复旦大学 | Flexible wearable water system lithium ion battery |
| CN114156485A (en) * | 2020-09-07 | 2022-03-08 | 黄炳照 | Composite modification layer and application thereof in anode-free lithium battery |
| CN113036150A (en) * | 2021-03-03 | 2021-06-25 | 珠海冠宇电池股份有限公司 | Current collector, battery pole piece and current collector manufacturing method |
| CN113036150B (en) * | 2021-03-03 | 2022-05-03 | 珠海冠宇电池股份有限公司 | Current collector, battery pole piece and current collector manufacturing method |
| CN115483503A (en) * | 2021-06-15 | 2022-12-16 | 丽能电池有限公司 | Flexible lithium ion battery and manufacturing method thereof |
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|---|---|
| CN103915646B (en) | 2016-05-18 |
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