CN106229540A - A kind of flexible lithium ion battery and manufacture method thereof - Google Patents
A kind of flexible lithium ion battery and manufacture method thereof Download PDFInfo
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- CN106229540A CN106229540A CN201610357762.6A CN201610357762A CN106229540A CN 106229540 A CN106229540 A CN 106229540A CN 201610357762 A CN201610357762 A CN 201610357762A CN 106229540 A CN106229540 A CN 106229540A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a kind of flexible lithium ion battery and manufacture method thereof, flexible lithium ion battery includes sealed package and is arranged at the set of cells within sealed package and electrolyte, and described set of cells includes positive plate, negative plate and the isolating membrane being arranged between positive plate and negative plate；Set of cells side is provided with and connects the anode ear of positive plate and the negative electrode lug being connected negative plate, and described anode ear and negative electrode lug pass sealed package；Described electrolyte is filled in sealed package.The present invention passes through macromolecular material as fixation kit, it is filled in through hole after macromolecular material melts, the fastening macromolecular material again solidified after thawing is connected as a single entity after contacting with isolating membrane and sealed package, the effect of " skeleton " is served at inside battery, battery is in BENDING PROCESS, " skeleton " secures positive/negative plate and isolating membrane, so it does not occur significantly relatively to slide, it is to avoid pole piece damage and inside battery structural damage.
Description
Technical field
The invention belongs to field of batteries, be specifically related to a kind of flexible lithium ion battery and manufacture method thereof.
Background technology
High, the novel secondary battery of environmental protection as a kind of energy density, lithium ion battery is widely used in portable electric
The fields such as sub-product, electric automobile, energy storage.In particular with smart mobile phone in recent years, panel computer, super notebook computer with
And intelligence wearable device flourish, the market demand of lithium ion battery the most rapidly increases.
Along with fast development and curved surface, the popularization of flexible screen technology of intelligence wearable device, to supporting lithium ion
Battery product is had higher requirement---and flexibility, flexible.Conventional batteries is due to inherent structure feature, it is impossible to accomplish soft
Property is flexible: traditional duricrust battery, cannot bend including box hat, aluminum hull (square or cylindrical), and polymer battery (also known as
Soft-package battery, encapsulates with aluminum plastic film) although shell has certain deformability, but bending can cause internal structure (pole piece repeatedly
With barrier film) damage, performance with safety cannot ensure.
The Chinese patent of Application No. 201310746111.2 discloses a kind of flexible wearable lithium battery, and this flexibility is dressed
Formula lithium battery includes that battery module, described battery module include flexible software and battery core unit, and described battery core unit is by two
Above single battery core and for connecting the conductor composition of described single battery core, described flexible software and battery core unit pass through silica gel or soft
Property plastics integrated injection molding, it is by being encapsulated in one by single battery core of two or more small volume by silica gel or flexiplast
In individual flexible software, between single battery core by the way of serial or parallel connection, Optional assembling becomes battery module, and this battery module can
With bending, one or more battery modules can form again flexible wearable lithium battery easily.But the flexibility of this structure is complete
Entirely being provided by base material, the little battery core of double team itself does not possess flexibility, and it has the disadvantage that: have the disadvantage that:
1. energy density is low.The energy of whole battery only is from occupying more space in battery core part, flexible parent metal and implant,
Cause the energy density of whole battery significantly lower than the lithium battery commercially produced at present.
2. complex process efficiency is low.One inside battery needs to make multiple little battery core, also to have special between battery core
Conduction band connects.Packaging technology is complicated, and production efficiency is low.
3. flexible inadequate.Little battery core itself is without flexible, and little battery core may be caused more greatly by alternating bending or bending amplitude
Damage, affects electrical property and the security performance of battery.
Accordingly, it would be desirable to a kind of battery core of exploitation itself can bend, and the flexible battery that energy density is high, expand it further
Range of application, meets the highest use demand.
Summary of the invention
It is an object of the invention to provide to solve above the deficiencies in the prior art a kind of flexible lithium ion battery and
Its manufacture method, reforms from this body structure of lithium ion battery so that it is have good flexibility.
Technical scheme is as follows:
A kind of flexible lithium ion battery, including sealed package and be arranged at the set of cells within sealed package and electrolysis
Liquid, described set of cells includes positive plate, negative plate and the isolating membrane being arranged between positive plate and negative plate；Set of cells side sets
Being equipped with and connect the anode ear of positive plate and the negative electrode lug being connected negative plate, described anode ear and negative electrode lug pass sealed package；
Described electrolyte is filled in sealed package.
Described flexible lithium ion battery, it is also possible to including flexible fixation kit, described flexible fixation kit is arranged at close
Envelope interior, described positive plate, negative plate and isolating membrane are provided with the mutually corresponding through hole overlapped in position, described flexibility
Fixation kit runs through positive plate, negative plate and isolating membrane by through hole and set of cells and sealed package is fixed.
Described flexible lithium ion battery, described isolating membrane can be ceramic membrane, PE film, PP film or PE Yu PP composite membrane
In one or more.
Described flexible lithium ion battery, described sealed package can be aluminum plastic film.
Described flexible lithium ion battery, described flexible fixation kit can be macromolecular material.
Described flexible lithium ion battery, described macromolecular material can be polyethylene, polypropylene, polrvinyl chloride, poly-right
One in benzene dicarboxylic acid butanediol ester and polystyrene.
The manufacture method of a kind of described flexible lithium ion battery, comprises the following steps:
Step one, gets through hole in diel by positive plate and negative plate, wherein gets through the number in hole on positive plate and negative plate
Measure identical with position；
Step 2, makes electrode group in the way of lamination or winding by positive plate, negative plate and isolating membrane, and wherein positive plate is with negative
Position, the hole center superposition of the through hole beaten on pole piece；
Step 3, in set of cells step 2 prepared, isolating membrane carries out getting through hole, get through the position in hole and positive plate and
The position of the through hole on negative plate is corresponding；
Step 4, at set of cells side welding anode ear and negative electrode lug；
Step 5, will coat macromolecular material inside sealed package, then use sealed package to wrap up electrode group,
Wherein anode ear passes with the sealing part of negative electrode lug sealed package part；
Step 6, the electrode group after step 5 being wrapped up uses flat board to compress, and is then heated to coating inside sealed package
Macromolecular material melts and is substantially filled in the through hole on electrode group positive plate, negative plate and isolating membrane；Compress with flat board again
Electrode group, cooling down solidifies, the electrode group after being fastened；
Step 7, by the electrode group after fastening according to lithium battery conventional manufacturing procedures by baking, fluid injection, encapsulation, formation process
Obtain flexible lithium ion battery.
The preparation method of described flexible lithium ion battery, in step one, on positive plate, the aperture in got through hole is more than negative pole
The aperture in got through hole on sheet；Got through hole on isolating membrane during the aperture in got through hole is more than step 3 on negative plate in step one
Aperture.
The preparation method of described flexible lithium ion battery, positive plate and total face in got through hole on negative plate in step one
Long-pending less than corresponding positive plate and the 1% of negative plate area.
The preparation method of described flexible lithium ion battery, the thickness of sealed package described in step 4 is 50-200 μ
M, the coating thickness of described macromolecular material is 50-300 μm.
The preparation method of described flexible lithium ion battery, described in step 5, the temperature of heating is 110-130 DEG C.
The preparation method of described flexible lithium ion battery, the aperture getting through hole in step one on positive plate is 1.1-2mm,
Get through on negative plate the aperture in hole less than the 0.1mm in positive plate punching aperture or more than；Step 3 is got through on isolating membrane hole
Aperture is 0.3-1.6mm.
In above-described flexible lithium ion battery, described positive plate, negative plate and electrolyte are commonly used in the art, just
Pole piece generally can include positive electrode active materials, positive conductive agent and positive electrode binder, and described positive electrode active materials can be selected from
LiCoO2、LiNi0.5Co0.2Mn0.3O2、Li(NiCoMn)1/3O2、LiNi0.4Co0.2Mn0.4O2、LiMn2O4、
The combination of one or more in LiNi0.5Mn1.5O4, LiNi0.5Mn0.5O2, LiFePO4；Negative plate generally can include
Negative active core-shell material, cathode conductive agent, negative pole thickening agent and negative electrode binder, described negative active core-shell material can be graphite, stone
Ink can be native graphite, the native graphite of surface modification, Delanium, hard carbon, soft carbon, MCMB, silicon grain, silicon
Line, silicon rod, oxidation Asia silicon, Graphene parcel silicon grain, the silicon grain depended on CNT, silicon-base alloy powder, two
Stannum oxide, lithium titanate, the combination of one or more of tin particles.
Electrolyte generally can be made up of main solvent, lithium salts, additive；Wherein, main solvent is generally by ethylene carbonate
EC, Allyl carbonate PC, Ethyl methyl carbonate EMC, methyl propyl carbonate MPC, diethyl carbonate DEC, dimethyl carbonate DMC, γ-
The combination of one or more in butyrolactone GBL, 1,3-dioxolane DOL, acetonitrile AN, methyl formate MF, methyl acetate MA；
Lithium salts can be generally by LiN (CxF2x+1SO2) (CyF2y+1SO2), wherein, x, y be positive integer, LiPF6, LiBF4,
The combination of one or more in LiBOB, LiAsF6, Li (CF3SO2) 2N, LiCF3SO3, LiClO4；Additive can be by
Vinylene carbonate VC, vinylethylene carbonate VEC, fluorinated ethylene carbonate FEC, propylene sulfite PS, sulfurous acid ethylene
Ester ES, dimethyl sulfite DMS, sulfurous acid diethyl ester DES, biphenyl BP, fluorobenzene FB, the ring-type phosphorus of cyclohexyl benzene CHB, 1-propyl group
Anhydride PPACA, perfluorobutyl potassium sulfonate PNB, three (2,2,2-trifluoroethyl) phosphite ester TTFP, hexamethyl phosphonitrile HMPN,
1,3-propene sultone PTS, phenyl tetrafluoride boron lithium, phthalic anhydride, the group of one or more in HMDS
Close.
The present invention compared with prior art has the advantages that
1. the flexible lithium ion battery that the present invention provides passes through the setting of positive/negative plate and uses flexible fixation kit to battery
It is fixed, well achieves the flexible of battery, fundamentally solve the buckling problem of battery.
2. the present invention is by macromolecular material as fixation kit, is filled in through hole, melts after macromolecular material melts
The fastening macromolecular material again solidified after change is connected as a single entity after contacting with isolating membrane and sealed package, rises at inside battery
Having arrived the effect of " skeleton ", battery is in BENDING PROCESS, and " skeleton " secures positive/negative plate and isolating membrane, so it does not occur bright
Aobvious relative slip, it is to avoid pole piece damage and inside battery structural damage.So that battery be provided with can be with alternating bending
Characteristic.
3. the flexible lithium ion battery that the present invention provides achieves the industrialized production of flexible lithium ion battery, material feeding
Convenient, with low cost, process is simple.
4. the flexible lithium ion that the present invention provides uses the various materials of existing industrialization lithium ion battery, application scenarios
Many, scope is wide.
5. the properties of battery, including energy density, voltage, internal resistance, electrical property, security performance, environmental adaptability
The most it is not weaker than the lithium ion battery commercially produced at present.
The flexible lithium ion battery that the present invention provides carries out performance test, and result is as follows:
1) energy density: according to the difference of use electrode material, scope is at 300-900Wh/L.
2) voltage: different according to battery material, battery uses voltage range between 2V-5V.
3) internal resistance: different according to battery sizes, internal resistance is in the range of 0.5-300m Ω.
4) electrical property, security performance, environmental adaptability, can meet GB GB31241-2014, GB-T18287-2013,
And the requirement of the every test of UL1642, IEC62133, UN38.3.
Accompanying drawing explanation
Fig. 1 is the flexible lithium ion battery schematic diagram provided in the embodiment of the present invention 1；
Fig. 2 is the flexible lithium ion battery schematic diagram provided in the embodiment of the present invention 2；
Fig. 3 is the flexible lithium ion battery electrode group schematic diagram provided in the embodiment of the present invention 2；
In figure 1 above-Fig. 3,1 is positive plate, and 2 is negative plate, and 3 is isolating membrane, and 4 is through hole, and 5 is flexible fixation kit, and 6 is close
Package piece installing, 7 is anode ear, and 8 is negative electrode lug.
Detailed description of the invention:
Embodiment 1
As it is shown in figure 1, the flexible lithium ion battery structure chart provided for the present embodiment, including sealed package 6 and be arranged at
Set of cells within sealed package 6 and electrolyte, described set of cells includes positive plate 1, negative plate 2 and is arranged at positive plate 1
And the isolating membrane 3 between negative plate 2；Set of cells side is provided with and connects the anode ear 7 of positive plate and the negative pole being connected negative plate
Ear 8, described anode ear 7 passes sealed package 6 with negative electrode lug 8；Described electrolyte is filled in sealed package 6.This enforcement
One or more during isolating membrane 3 can be ceramic membrane, PE film, PP film or PE Yu PP composite membrane in example；Sealed package 6 is
Aluminum plastic film.The flexible lithium ion battery that the present embodiment provides fundamentally solves cell flexible problem, uses itself to have soft
The pole piece of property and sealed package can keep the flexibility of battery well.
Embodiment 2
The present embodiment is the further improvement on the basis of embodiment 1, as shown in Figures 2 and 3, also includes flexible fixation kit
5, it is internal that described flexible fixation kit 5 is arranged at sealed package 6, and positive plate 1, negative plate 2 and isolating membrane 3 are provided with position
The most corresponding through hole 4 overlapped, described flexible fixation kit 5 runs through positive plate 1, negative plate 2 and isolating membrane 3 also by through hole 4
Set of cells and sealed package 6 are fixed.In the present embodiment, flexible fixation kit 5 is macromolecular material, can be polyethylene, gather
One in propylene, polrvinyl chloride, polybutylene terephthalate (PBT) and polystyrene.
The manufacture method of above-described flexible lithium ion battery, comprises the following steps:
Step one, gets through hole in diel by positive plate and negative plate, wherein gets through the number in hole on positive plate and negative plate
Measuring identical with position, on positive plate, the aperture in got through hole is more than the aperture in got through hole, positive plate and negative plate on negative plate
The gross area in upper got through hole is less than corresponding positive plate and the 1% of negative plate area；
Step 2, makes electrode group in the way of lamination or winding by positive plate, negative plate and isolating membrane, and wherein positive plate is with negative
Position, the hole center superposition of the through hole beaten on pole piece；
Step 3, in set of cells step 2 prepared, isolating membrane carries out getting through hole, get through the position in hole and positive plate and
The position of the through hole on negative plate is corresponding, and in step one, on negative plate, the aperture in got through hole is more than got through hole on isolating membrane
Aperture；
Step 4, at set of cells side welding anode ear and negative electrode lug；
Step 5, will coat macromolecular material inside sealed package, then use sealed package to wrap up electrode group,
Wherein anode ear passes with the sealing part of negative electrode lug sealed package part；
Step 6, the electrode group after step 5 being wrapped up uses flat board to compress, and is then heated to coating inside sealed package
Macromolecular material melts and is substantially filled in the through hole on electrode group positive plate, negative plate and isolating membrane；Compress with flat board again
Electrode group, cooling down solidifies, the electrode group after being fastened；
Step 7, by the electrode group after fastening according to lithium battery conventional manufacturing procedures by baking, fluid injection, encapsulation, formation process
Obtain flexible lithium ion battery.
The aperture getting through hole in the present embodiment in the manufacture method step one of flexible lithium ion battery on positive plate can be
0.8-4mm, preferably 1.1-2mm, negative plate is got through the aperture in hole less than the 0.1mm in positive plate punching aperture or more than；Step
The aperture getting through hole in rapid three on isolating membrane can be 0.3-3mm；The thickness of sealed package described in step 4 can be 50-
200 μm, the coating thickness of described macromolecular material can be 50-300 μm；Described in step 5, the temperature of heating is 110-130
℃。
Embodiment 3
The positive plate of flexible lithium ion battery of the present invention needs, negative plate, isolating membrane etc. are all the most conventional battery materials, can
To use commercially available product or oneself to prepare, the realization for the object of the invention does not affect, and provides below a kind of present invention
The concrete preparation method of described flexible lithium ion battery, specific as follows:
Prepare the full battery of lithium ion: positive plate, negative plate and isolating membrane are made lithium ion battery cell through lamination process；
Positive pole sheet stock district size: 80mm*50mm(long * width)；
Negative pole sheet stock district size: 82mm*52mm；
Isolating membrane width: 54mm；Isolating membrane is 16um Al2O3Pottery isolating membrane.
First by positive plate, negative plate punching, positive pole aperture 1.8mm, negative pole aperture 1.6mm before lamination；
Positive/negative plate and isolating membrane lamination are made electrode group；
Electrode group isolating membrane after lamination is punched, punching center, position and the existing position, hole of both positive and negative polarity before center superposition；Aperture
0.3mm
Soldering polar ear；
Battery core after being punched by isolating membrane loads aluminum plastic film bag；
Push down aluminum plastic film bag with mould up and down and be simultaneously heated to 120 DEG C, continue 3 minutes；
Take off after heating and cool down half an hour at room temperature.
Then lithium-ion battery electrolytes, vacuum are injected according still further to lithium ion battery preparation technology after carrying out toasting 20 hours
Seal and stand 24 hours；By the constant current charge of 40mA to 4.2V, drop to battery with 4.2V constant-voltage charge to electric current
Charging current 10mA, is discharged to 3.0V with the constant current of 290mA, then is filled by battery with the constant current of 400mA (0.2C)
Electricity to 3.85V, final vacuum, the aging preparation completing lithium ion battery.
The one of which detailed description of the invention of above example simply reflection the technology of the present invention design, is not all, appoints
The specific implementation process what is implemented based on technical solution of the present invention belongs to the scope of protection of the invention.
The flexible lithium ion battery that the present invention provides passes through the setting of positive/negative plate and uses flexible fixation kit to electricity
Pond is fixed, and well achieves the flexible of battery, fundamentally solves the buckling problem of battery.
The present invention, is filled in through hole after macromolecular material melts as fixation kit by macromolecular material, melts
After the fastening macromolecular material that again solidifies contact with isolating membrane and sealed package after be connected as a single entity, play at inside battery
The effect of " skeleton ", battery is in BENDING PROCESS, " skeleton " secures positive/negative plate and isolating membrane, so it does not occur substantially
Relative slip, it is to avoid pole piece damage and inside battery structural damage.So that battery be provided with can be with alternating bending
Characteristic.
The flexible lithium ion battery obtaining the manufacture method manufacture of the flexible lithium ion battery using the present invention to provide enters
Row performance test, result is as follows:
1) energy density: according to the difference of use electrode material, scope is at 300-900Wh/L.
2) voltage: different according to battery material, battery uses voltage range between 2V-5V.
3) internal resistance: different according to battery sizes, internal resistance is in the range of 0.5-300m Ω.
4) electrical property, security performance, environmental adaptability, can meet GB GB31241-2014, GB-T18287-2013,
And the requirement of the every test of UL1642, IEC62133, UN38.3.
Claims (12)
1. a flexible lithium ion battery, it is characterised in that include sealed package (6) and be arranged at sealed package (6)
Internal set of cells and electrolyte, described set of cells includes positive plate (1), negative plate (2) and is arranged at positive plate (1) and negative pole
Isolating membrane (3) between sheet (2)；Set of cells side is provided with the anode ear (7) connecting positive plate (1) and is connected negative plate (2)
Negative electrode lug (8), described anode ear (7) and negative electrode lug (8) pass sealed package (6)；Described electrolyte is filled in sealed bundle
In piece installing (6).
Flexible lithium ion battery the most according to claim 1, it is characterised in that also include flexible fixation kit (5), described
It is internal that flexible fixation kit (5) is arranged at sealed package (6), and described positive plate (1), negative plate (2) and isolating membrane (3) set
Being equipped with the mutually corresponding through hole (4) overlapped in position, described flexible fixation kit (5) is run through positive plate (1) by through hole (4), is born
Set of cells and sealed package (6) are also fixed by pole piece (2) and isolating membrane (3).
Flexible lithium ion battery the most according to claim 1, it is characterised in that described isolating membrane (3) is ceramic membrane, PE
One or more in film, PP film or PE Yu PP composite membrane.
Flexible lithium ion battery the most according to claim 1, it is characterised in that described sealed package (6) is aluminum plastic film.
Flexible lithium ion battery the most according to claim 2, it is characterised in that described flexible fixation kit (5) is high score
Sub-material.
Flexible lithium ion battery the most according to claim 5, it is characterised in that described macromolecular material is polyethylene, gathers
One in propylene, polrvinyl chloride, polybutylene terephthalate (PBT) and polystyrene.
7. the manufacture method of the flexible lithium ion battery described in a claim 5, it is characterised in that comprise the following steps:
Step one, gets through hole in diel by positive plate and negative plate, wherein gets through the number in hole on positive plate and negative plate
Measure identical with position；
Step 2, makes electrode group in the way of lamination or winding by positive plate, negative plate and isolating membrane, and wherein positive plate is with negative
Position, the hole center superposition of the through hole beaten on pole piece；
Step 3, in set of cells step 2 prepared, isolating membrane carries out getting through hole, get through the position in hole and positive plate and
The position of the through hole on negative plate is corresponding；
Step 4, at set of cells side welding anode ear and negative electrode lug；
Step 5, will coat macromolecular material inside sealed package, then use sealed package to wrap up electrode group,
Wherein anode ear passes with the sealing part of negative electrode lug sealed package part；
Step 6, the electrode group after step 5 being wrapped up uses flat board to compress, and is then heated to coating inside sealed package
Macromolecular material melts and is substantially filled in the through hole on electrode group positive plate, negative plate and isolating membrane；Compress with flat board again
Electrode group, cooling down solidifies, the electrode group after being fastened；
Step 7, by the electrode group after fastening according to lithium battery conventional manufacturing procedures by baking, fluid injection, encapsulation, formation process
Obtain flexible lithium ion battery.
The preparation method of flexible lithium ion battery the most according to claim 7, it is characterised in that in step one on positive plate
The aperture in got through hole is more than the aperture in got through hole on negative plate；In step one, on negative plate, the aperture in got through hole is more than step
The aperture in got through hole on isolating membrane in rapid three.
The preparation method of flexible lithium ion battery the most according to claim 7, it is characterised in that in step one positive plate with
On negative plate, the gross area in got through hole is less than corresponding positive plate and the 1% of negative plate area.
The preparation method of flexible lithium ion battery the most according to claim 7, it is characterised in that close described in step 4
The thickness of package piece installing is 50-200 μm, and the coating thickness of described macromolecular material is 50-300 μm.
The preparation method of 11. flexible lithium ion batteries according to claim 7, it is characterised in that add described in step 5
The temperature of heat is 110-130 DEG C.
The preparation method of 12. flexible lithium ion batteries according to claim 8, it is characterised in that positive plate in step one
On to get through the aperture in hole be 0.8-4mm, negative plate is got through the aperture in hole less than the 0.1mm in positive plate punching aperture or more than；
The aperture getting through hole in step 3 on isolating membrane is 0.3-3mm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004262A (en) * | 2018-07-24 | 2018-12-14 | 安普瑞斯（无锡）有限公司 | A kind of bending polymer Li-ion battery |
| CN112002931A (en) * | 2020-06-16 | 2020-11-27 | 深圳信达新能源科技有限公司 | Preparation method of flexible battery pack and prepared flexible battery pack |
| CN113675454A (en) * | 2020-05-14 | 2021-11-19 | 香港城市大学深圳研究院 | Small-size flexible battery assembling die |
| CN114761208A (en) * | 2020-10-29 | 2022-07-15 | 株式会社Lg新能源 | Pouch type battery manufacturing apparatus |
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| CN1213500C (en) * | 2000-03-03 | 2005-08-03 | 皇家菲利浦电子有限公司 | Method for manufacturing thin lithium battery |
| CN102544574A (en) * | 2011-12-30 | 2012-07-04 | 华中科技大学 | Flexible lithium ion battery and packaging method thereof |
| CN104617334A (en) * | 2014-12-25 | 2015-05-13 | 尚 | Flexible cell and manufacturing method thereof |
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| CN109004262A (en) * | 2018-07-24 | 2018-12-14 | 安普瑞斯（无锡）有限公司 | A kind of bending polymer Li-ion battery |
| CN113675454A (en) * | 2020-05-14 | 2021-11-19 | 香港城市大学深圳研究院 | Small-size flexible battery assembling die |
| CN112002931A (en) * | 2020-06-16 | 2020-11-27 | 深圳信达新能源科技有限公司 | Preparation method of flexible battery pack and prepared flexible battery pack |
| CN112002931B (en) * | 2020-06-16 | 2022-03-18 | 深圳信达新能源科技有限公司 | Preparation method of flexible battery pack and prepared flexible battery pack |
| CN114761208A (en) * | 2020-10-29 | 2022-07-15 | 株式会社Lg新能源 | Pouch type battery manufacturing apparatus |
| CN114761208B (en) * | 2020-10-29 | 2023-12-12 | 株式会社Lg新能源 | Pouch type battery manufacturing apparatus |
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