CN204732472U - Flexible electrode and comprise the battery of this flexible electrode - Google Patents
Flexible electrode and comprise the battery of this flexible electrode Download PDFInfo
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- CN204732472U CN204732472U CN201520262730.9U CN201520262730U CN204732472U CN 204732472 U CN204732472 U CN 204732472U CN 201520262730 U CN201520262730 U CN 201520262730U CN 204732472 U CN204732472 U CN 204732472U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The flexible electrode that the utility model provides and comprise the battery of this flexible electrode, flexible electrode comprises conductive base, conductive base is coated with active material layer, active material layer is be interrupted the pattern block arranged or the net, the grating texture that arrange continuously, and the thickness of the active material layer in the net arranged continuously, grating texture in net, lattice is greater than the thickness of junction of adjacent two nets, compartment.The utility model flexible electrode, according to the active material layer conductive base that do not coexist of cell shapes being interrupted the patterning arranged by coating or the net, the trellis active material layer that arrange continuously, reaches the object increasing flexible electrode flexibility; This electrode can do become band, chain or bulk etc., battery is not many monomer connection in series-parallel, but a battery, and low cost of manufacture, fail safe are good, need not add extra control and management circuit; Cell thickness can accomplish 0.5-50mm, and relative usage capacity is large, and internal resistance is little, and pulse behaviors is good, can widen actual range of application.
Description
Technical field
The utility model belongs to electrical storage device field, especially relates to a kind of flexible electrode, comprises the electrical storage device of this flexible electrode and electrical storage device preparation method.
Background technology
The flexible electrode adopting conventional art to manufacture, generally do not have flexibility or flexible poor, along with cell thickness increases, battery can lose flexibility completely.
The method of current solution cell flexible probably has:
Many baby battery connection in series-parallel, this technology is with the watchband type batterypatent of APPLE company for representative, and its shortcoming is, baby battery manufactures difficulty, and production cost is high, is difficult to industrialization and realizes; Many battery series-parallel connections can produce battery capacity and voltage uneven and cause the problem wanting additional control circuit and produce potential safety hazard;
Flexible material and flexible flexible electrode.Lower with the cell thickness of flexible material and the manufacture of flexible flexible electrode at present, general maximum ga(u)ge at about 1mm, thus causes cell integrated capacity on the low side;
In recent years, the raising that development and people along with smart mobile phone technology require portable type electronic product, the wearable electronic such as intelligent watch, bracelet product becomes the emphasis of exploitation gradually.And these products are faced with low, the inflexible shortcoming of battery capacity, govern the development of electronic product.Therefore battery slimming, flexibility is required.
Battery is through method manufactures such as winding or laminations by positive flexible electrode, negative flexible electrode, barrier film etc.Wherein positive flexible electrode and negative flexible electrode are made up of positive flexible electrode active material, negative flexible electrode active material and conductive base etc. respectively.So the flexibility of inside battery assembly must be improved in order to develop flexible battery product.Therefore the problem that a kind of flexible flexible electrode becomes those skilled in the art's research how is designed.
Utility model content
In view of this, the utility model is intended to propose a kind of flexible flexible electrode, the electrical storage device comprising this flexible electrode and electrical storage device preparation method, to solve the problem of cell flexible.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of flexible flexible electrode, comprise conductive base, described conductive base is coated with active material layer, described active material layer is be interrupted the pattern block arranged or the net, the grating texture that arrange continuously, and the thickness of the active material layer in the net of described continuous setting, grating texture in net, lattice is greater than the thickness of junction of adjacent two nets, compartment.
Further, the thickness of the active material layer in the net of described continuous setting, lattice is 10 μm of-10mm, and the thickness of the junction of described adjacent two nets, compartment is less than or equal to 5mm for being greater than 0.
Further, the width of the junction of the width of the discontinuities of described pattern block or adjacent net, compartment is 1mm-20mm.
Further, the thickness of described conductive base is 5 μm of-5mm.
Further, described active layer adopts the one in extruding, spraying, nick, deposition or printing to prepare.
Comprise the electrical storage device of above-mentioned flexible electrode.
Relative to prior art, flexible electrode described in the utility model has following advantage:
(1) flexible electrode described in the utility model is according to the active material layer conductive base that do not coexist of cell shapes being interrupted the patterning arranged by coating or the net, the trellis active material layer that arrange continuously, reaches the object increasing flexible electrode flexibility;
(2) above-mentioned flexible electrode can do become band, chain or bulk etc.Battery is not many monomer connection in series-parallel, but a battery, and such low cost of manufacture, fail safe are good, need not add extra control and management circuit;
(3) cell thickness can accomplish 0.5-50mm, and relative usage capacity is large, and internal resistance is little, and pulse behaviors is good, can widen actual range of application.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the flexible electrode structure of the Li-ion rechargeable table ring battery described in the utility model embodiment;
Fig. 2 is the flexible electrode structure of the wearable battery of Li-ion rechargeable described in the utility model embodiment;
Fig. 3 a-3c is other various patterning shapes of the utility model flexible electrode.
Description of reference numerals:
1-conductive base, 2-active material layer.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The raw material of this utility model is the raw material that any rechargeable battery uses;
Positive and negative flexible electrode base material is the base material that any rechargeable battery uses;
External structure has certain flexibility;
Basic similar to conventional batteries in proportioning process, in formula, containing flexible electrode active material, (such as positive flexible electrode is: the ternary lithium ion active material of cobalt acid lithium, lithium nickelate, LiMn2O4, LiFePO4, different ratio or hickelous nydroxide etc.; Negative flexible electrode is: artificial or native graphite, Graphene, hydrogen bearing alloy, cadmium metal or zinc etc.); Conductive agent SP, VGCF, SFG-6, carbon nano-tube etc.; Binder PVDF, CMC, SBR etc.; Solvent NMP, water etc. with auxiliary reagent as oxalic acid etc.
Coating process uses the coating process of extruding, spraying, nick, deposition or printing etc. to be coated on conductive base by active material, positive flexible electrode chooses 5 μm of thick metals of-5mm or radio frequency base material, negative flexible electrode chooses 5 μm of-5mm metals or radio frequency base material, and makes it can reach the structure of setting.This structure has netted or other structure, is coated with the active material of design thickness in grid, and size is between 2mm-100mm.For not apply active material or to apply a small amount of active material between grid, size is between 1mm-20mm.Distance between negative flexible electrode grid is greater than distance between positive flexible electrode grid at least more than 0.5mm or equal.The positive and negative flexible electrode structure applied has certain thickness, and thickness is generally between 15 μm of-15mm.Positive and negative flexible electrical pole piece is like this after superposition or winding, and the base part branch not applying active material or apply a small amount of active material has certain flexibility, can arbitrarily bend this place, make battery be provided with certain flexibility.Make, with the battery that this flexible electrode manufactures, there is higher thickness and better flexibility.According to the bending degree of battery request, the adjustable gap length not covering material or cover material on a small quantity.
Will align in the position not applying active material or apply a small amount of active material between positive and negative flexible electrode grid when film-making and assembling, and the position that negative flexible electrode does not apply active material or applies a small amount of active material falls within the centre at position that positive flexible electrode does not apply active material or applies a small amount of active material.The width of negative flexible electrode flexible electrode can equal the width that positive flexible electrode also can be greater than positive flexible electrode, during winding, ending can be that positive flexible electrode is longer than negative flexible electrode ending or is born flexible electrode and is longer than positive flexible electrode ending, also can just equal negative flexible electrode or finish up with the base material of positive flexible electrode or negative flexible electrode by flexible electrode.
Embodiment 1:
Li-ion rechargeable table ring battery (specification 0420100)
This battery can be loaded in the space of watchband, becomes to be integrated with watchband, has both saved space and has added aesthetics, again for table provides electricity.For better improving capacity and the high rate performance of this battery, the utility model is chosen carbon nano-tube and is added in positive flexible electrode slurry as conductive agent, and the making that good lithium ion battery material carries out showing ring battery also chosen by other material.
Batching: the percentage by weight of each component is as follows:
Positive flexible electrode: cobalt acid lithium (97.95%), carbon nano-tube (1%), PVDF (1%), oxalic acid (0.05%);
Negative flexible electrode: Delanium (95.98%), SP (1%), PVDF (3%), oxalic acid (0.02%);
Add the solvent NMP of concentration 95%-105% respectively, adopt double-planet de-airing mixer, positive and negative flexible electrode separately at two double planetary mixer after fully stirring and disperse and lower the temperature, adjusting viscosity makes the viscosity of positive and negative flexible electrode slurry be issued between 1000-3000cp at 25-30 degree environment; It is stand-by that positive and negative flexible electrode slurry all uses 150 eye mesh screens to carry out filtration;
Coating:
Positive flexible electrode chooses 15 μm of thick aluminum foils; Negative flexible electrode chooses 10 μm of thick Copper Foils.The mode of employing batch (-type) automatic coating machine, extrusion coated is coated with positive and negative flexible electrode slurry.In coating process, make to roll up greatly flexible electrode occur a 3mm gap not applying active material or apply a small amount of active material in lateral attitude every 13mm; Coated face density is set to 32mg/cm2, and baking temperature is 90 DEG C, regulates coating speed to be out drying to flexible electrode from baking oven.Pole piece adopts hydraulic pressure roller to roll positive flexible electrode to design thickness 90-93 μm after drying, and rolls negative flexible electrode to 120-123 μm.Painting effect as shown in Figure 1;
Film-making:
Positive flexible electrode is of a size of 150mm (length) * 92mm (wide);
Negative flexible electrode is of a size of 170mm (length) * 93mm (wide);
Make positive and negative flexible electrode gap align during film-making, and ensure that each gap of positive flexible electrode all falls within the middle of negative flexible electrode gap.Clean out the region of 4*4mm at the two ends of flexible electrode, welding can the lug of extracted current on the area, and lug is the positive flexible electrode aluminium pole ears of 2mm*0.1mm and negative flexible electrode nickel lug;
Assembling:
Employing basement membrane is the barrier film of even spread pottery alundum (Al2O3) and glue PVDF on individual layer polyolefin, and membrane thicknesses is 18 μm, the wide 95mm of long 400mm*;
External packing is the Imported Aluminium plastic film of 210mm*50mm*86 μm;
Negative flexible electrode occupy barrier film middle, and positive flexible electrode occupy negative flexible electrode middle, and barrier film separates positive and negative flexible electrode, adopts mutual-inserting type up-coiler to reel; Core after winding is with stopping gummed paper ending stickup shaping, and the positive and negative flexible electrode lug of core aligns.By the aluminum plastic film cut out this core coated, then carry out banding limit, top side with top side seal machine, retain a side open-ended.
Baking 16h is vacuumized at the temperature of 70 DEG C to the battery core sealed, in glove box, then injects 5g LiPF6 electrolyte, at room temperature still aging 20h behind the limit that side seal retains.
Preliminary filling partial volume
Namely the table ring battery of flexible is obtained after preliminary filling partial volume is carried out to the battery core after ageing.
Embodiment 2: the wearable battery of Li-ion rechargeable (specification 04100100)
This battery can be contained on clothes or on cap or other place needed, as the power supply of wearable device flexible.For better improving capacity and the high rate performance of this battery, the utility model is chosen carbon nano-tube and is added in positive flexible electrode slurry as conductive agent, and the making that good lithium ion battery material carries out wearable battery also chosen by other material.
Batching: the percentage by weight of each component is as follows:
Positive flexible electrode: cobalt acid lithium (97.95%), carbon nano-tube (1%), PVDF (1%), oxalic acid (0.05%);
Negative flexible electrode: Delanium (95.98%), SP (1%), PVDF (3%), oxalic acid (0.02%);
Add the solvent NMP that concentration is 95%-105% respectively, adopt double-planet de-airing mixer, positive and negative flexible electrode separately at two double planetary mixer after fully stirring and disperse and lower the temperature, adjusting viscosity makes the viscosity of positive and negative flexible electrode slurry be issued between 1000-3000cp at 25-30 degree environment; It is stand-by that positive and negative flexible electrode slurry all uses 150 eye mesh screens to carry out filtration;
Coating:
Positive flexible electrode chooses 15 μm of thick aluminum foils; Negative flexible electrode chooses 10 μm of thick Copper Foils.The mode of employing batch (-type) automatic coating machine, extrusion coated is coated with positive and negative flexible electrode slurry.In coating process, make to roll up greatly flexible electrode occur a 3mm gap not applying active material or apply a small amount of active material in lateral attitude every 15mm; The snap ring that a width is the quality of rubber materials of 3mm is installed every 15mm in the position that the scraper of coating machine is connected with applicator roll, like this in the process of coating large volume longitudinal direction on there will be a gap of 3mm not applying active material or apply a small amount of active material every 15mm.Coated face density is set to 32mg/cm2, and baking temperature is 90 DEG C, regulates coating speed to be out drying to flexible electrode from baking oven.Pole piece adopts hydraulic pressure roller to roll positive flexible electrode to design thickness 90-93 μm after drying, and rolls negative flexible electrode to 120-123 μm.
Painting effect as shown in Figure 2;
Film-making:
Positive flexible electrode is of a size of 1000mm (length) * 92mm (wide);
Negative flexible electrode is of a size of 1100mm (length) * 93mm (wide);
Make positive and negative flexible electrode gap align during film-making, and ensure that each gap of negative flexible electrode all falls within the middle of positive flexible electrode gap.Clean out the region of 4*4mm at the two ends of flexible electrode, welding can the lug of extracted current on the area, and lug is the positive flexible electrode aluminium pole ears of 5mm*0.08mm and negative flexible electrode nickel lug;
Assembling:
Employing basement membrane is the barrier film of even spread pottery alundum (Al2O3) and glue PVDF on individual layer polyolefin, and membrane thicknesses is 18 μm, the wide 95mm of long 2200mm*;
External packing is the Imported Aluminium plastic film of 210mm*150mm*86 μm;
Negative flexible electrode occupy barrier film middle, and positive flexible electrode occupy negative flexible electrode middle, and barrier film separates positive and negative flexible electrode, adopts mutual-inserting type up-coiler to reel; Core high tempreture tape after winding finishes up stickup shaping, the positive and negative flexible electrical lug alignment of core.By the aluminum plastic film cut out this core coated, then carry out banding limit, top side with top side seal machine, retain a side open-ended.
Baking 16h is vacuumized at the temperature of 70 DEG C to the battery core sealed, in glove box, then injects 12g LiPF6 electrolyte, at room temperature still aging 20h after the side that heat-sealing retains.
Preliminary filling partial volume
Both the wearable battery of flexible had been obtained after preliminary filling partial volume is carried out to the battery core after ageing.
The battery of this size that traditional handicraft makes and shape, not bent;
The battery of this size that the utility model makes and shape, maximumly can be bent to 90 DEG C.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. a flexible electrode, comprise conductive base, it is characterized in that: described conductive base is coated with active material layer, described active material layer is be interrupted the pattern block arranged or the net, the grating texture that arrange continuously, and the thickness of the active material layer in the net of described continuous setting, grating texture in net, lattice is greater than the thickness of junction of adjacent two nets, compartment.
2. flexible electrode according to claim 1, is characterized in that: the thickness of the active material layer in the net of described continuous setting, lattice is 10 μm of-10mm, and the thickness of the junction of described adjacent two nets, compartment is less than or equal to 5mm for being greater than 0.
3. flexible electrode according to claim 1, is characterized in that: the width of the junction of the width of the discontinuities of described pattern block or adjacent net, compartment is 1mm-20mm.
4. flexible electrode according to claim 1, is characterized in that: the thickness of described conductive base is 5 μm of-5mm.
5. flexible electrode according to claim 1, is characterized in that: described active layer adopts the one in extruding, spraying, nick, deposition or printing to prepare.
6. comprise the battery of the flexible electrode as described in any one of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262730.9U CN204732472U (en) | 2015-04-27 | 2015-04-27 | Flexible electrode and comprise the battery of this flexible electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262730.9U CN204732472U (en) | 2015-04-27 | 2015-04-27 | Flexible electrode and comprise the battery of this flexible electrode |
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| CN204732472U true CN204732472U (en) | 2015-10-28 |
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| CN201520262730.9U Expired - Fee Related CN204732472U (en) | 2015-04-27 | 2015-04-27 | Flexible electrode and comprise the battery of this flexible electrode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795532A (en) * | 2015-04-27 | 2015-07-22 | 刘强 | Electrode, electrical storage device comprising electrode and preparation method of electrical storage device |
| CN105489831A (en) * | 2015-12-03 | 2016-04-13 | 辉能（天津）科技发展有限公司 | Comb-shaped flexible electrode arranged in back-to-back way and battery containing same |
| CN109037624A (en) * | 2018-07-16 | 2018-12-18 | 郑州大学 | A kind of flexible compound electrode and its battery of preparation |
-
2015
- 2015-04-27 CN CN201520262730.9U patent/CN204732472U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795532A (en) * | 2015-04-27 | 2015-07-22 | 刘强 | Electrode, electrical storage device comprising electrode and preparation method of electrical storage device |
| CN105489831A (en) * | 2015-12-03 | 2016-04-13 | 辉能（天津）科技发展有限公司 | Comb-shaped flexible electrode arranged in back-to-back way and battery containing same |
| CN105489831B (en) * | 2015-12-03 | 2018-09-18 | 辉能（天津）科技发展有限公司 | The comb teeth-shaped flexible electrode being arranged back-to-back and the battery comprising the electrode |
| CN109037624A (en) * | 2018-07-16 | 2018-12-18 | 郑州大学 | A kind of flexible compound electrode and its battery of preparation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HUINENG (TIANJIN) TECHNOLOGY DEVELOPMENT Co.,Ltd. Assignor: Liu Qiang Contract record no.: 2015120000088 Denomination of utility model: Flexible electrode and contain this flexible electrode's battery Granted publication date: 20151028 License type: Exclusive License Record date: 20151218 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 |
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| CF01 | Termination of patent right due to non-payment of annual fee |