CN106960976A - Thin-type secondary battery and preparation method thereof - Google Patents
Thin-type secondary battery and preparation method thereof Download PDFInfo
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- CN106960976A CN106960976A CN201710317445.6A CN201710317445A CN106960976A CN 106960976 A CN106960976 A CN 106960976A CN 201710317445 A CN201710317445 A CN 201710317445A CN 106960976 A CN106960976 A CN 106960976A
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- pole piece
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000012785 packaging film Substances 0.000 claims abstract description 85
- 229920006280 packaging film Polymers 0.000 claims abstract description 85
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 83
- 239000002131 composite material Substances 0.000 claims abstract description 79
- 239000002861 polymer material Substances 0.000 claims abstract description 78
- 239000004411 aluminium Substances 0.000 claims abstract description 77
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000004033 plastic Substances 0.000 claims abstract description 74
- 239000011149 active material Substances 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 239000010410 layer Substances 0.000 claims description 142
- 230000004888 barrier function Effects 0.000 claims description 30
- 239000003792 electrolyte Substances 0.000 claims description 26
- 239000004831 Hot glue Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 18
- 239000012528 membrane Substances 0.000 claims description 10
- 239000007774 positive electrode material Substances 0.000 claims description 9
- 239000007773 negative electrode material Substances 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 4
- 229920002521 macromolecule Polymers 0.000 claims description 4
- 239000012943 hotmelt Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 12
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 6
- 238000012856 packing Methods 0.000 abstract description 5
- 239000004743 Polypropylene Substances 0.000 description 41
- 229920001155 polypropylene Polymers 0.000 description 41
- -1 polypropylene Polymers 0.000 description 19
- 238000000034 method Methods 0.000 description 16
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000004952 Polyamide Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920002647 polyamide Polymers 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- 239000005030 aluminium foil Substances 0.000 description 4
- 239000006183 anode active material Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 229910001290 LiPF6 Inorganic materials 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000006257 cathode slurry Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000004040 pyrrolidinones Chemical class 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
This application discloses thin-type secondary battery and preparation method thereof, wherein thin-type secondary battery includes at least one anode pole piece and at least one cathode pole piece, anode pole piece and cathode pole piece are sequentially arranged at intervals, each pole piece includes metal collector, it is characterized in that, metal collector in outermost pole piece is provided with active material layer towards the one side of other pole pieces, and another side is provided with polymer material layer；When pole piece quantity is more than or equal to 3, the two sides of the metal collector of middle pole piece is provided with active material layer.The application thin-type secondary battery outermost pole piece only has one side to need to set PUR active material layer, by that need not set the one side of active material layer in metal collector, polymer material layer is set, it can offset or partial offset stress caused by active material extends after roll-in, so as to solve the problems, such as caused pole piece clot after pole piece one side coating roll-in, also heat can be carried out with the aluminium plastic composite packaging film of external packing compound, forms bulk electrode.
Description
Technical field
The present invention relates to field of batteries, and in particular to thin-type secondary battery and preparation method thereof.
Background technology
With making rapid progress for electronic device technology, our requirements to battery also more and more higher.The battery of a new generation, will
Inevitably develop to ultrathin and flexibility, this has found full expression in wearable device and RFID products.It is super
Thin battery, as its name suggests, the battery of very thin thickness can accomplish that most thin is plastic-aluminum flexible packing lithium battery now.
Secondary cell is also known as rechargeable battery or battery, and plastic-aluminum flexible packing lithium battery is exactly a kind of slim secondary electricity
Pond, plastic-aluminum flexible packing lithium battery has high energy density, smallerization, ultrathin, lightweight, high security and low cost etc. many
Plant clear superiority.The characteristics of slimline battery is maximum is that the thickness of whole battery is less than 0.5mm, thin just as paper, and circulation
Long lifespan is low from power consumption.The need for can be according to client, different sizes, variously-shaped battery be designed and produced, is widely used in
The ultrathin products such as smart card, ultra-thin credit card, RFID, bank card and the Wearable electronic product neck risen recently
Domain.
Battery is made thin, it is important that a bit, exactly each part will be made thin.Extra-thin battery is made,
Positive and negative electrode only applies one side, and in follow-up roll process processing, clot occurs in pole piece, influences the packaging efficiency of battery.For
Above-mentioned pole piece clot problem, the settling mode of existing technique is：Two-sided in pole piece coats same recipe, identical weight, phase
The material of stack pile, in roll-in, the stress of the generation of the extension on both sides is cancelled out each other, and will not occur clot phenomenon.But this
The method of kind brings the active material for having the disadvantage to waste another side, increases cost.
The content of the invention
The present invention is regarding to the issue above, it is proposed that thin-type secondary battery and preparation method thereof.
The technical scheme that the present invention takes is as follows：
A kind of thin-type secondary battery, including at least one anode pole piece and at least one cathode pole piece, the anode pole piece
Be sequentially arranged at intervals with cathode pole piece, each pole piece includes metal collector, the metal collector in outermost pole piece towards its
The one side of his pole piece is provided with active material layer, and another side is provided with polymer material layer；When pole piece quantity is more than or equal to 3,
The two sides of the metal collector of middle pole piece is provided with active material layer.
Thin-type secondary battery outermost pole piece only has one side to need to set active material layer, by being not required in metal collector
Set active material layer one side set polymer material layer, can offset or partial offset after roll-in because active material prolongs
Stress caused by exhibition, so as to solve the problems, such as caused pole piece clot after pole piece one side coating roll-in.
By solving the problems, such as pole piece clot, the production efficiency of further battery assembling is improved, and selects polymer material layer,
Cost is saved, automated production is easy to implement, meanwhile, reduce pole piece and drop off, strengthen the intensity of pole piece, prevent tearing for pole piece
Split and damaged.
Slim described in the application is relative concept, and for common batteries, thin-type secondary battery is very thin.This
The thin-type secondary battery of application, can only have 2 pole pieces (being 1 anode pole piece and 1 cathode pole piece respectively), it is possibility to have 3
Individual pole piece (be respectively 2 anode pole pieces and 1 cathode pole piece, or 1 anode pole piece and 2 cathode pole pieces), actual fortune
Used time, when thinness is less demanding, can also set 5, even more pole pieces.
Optionally, barrier film, the metal afflux of the anode pole piece are provided between the anode pole piece and cathode pole piece
Body is that the active material layer on plus plate current-collecting body, plus plate current-collecting body is anode active material layer；The metal collection of the cathode pole piece
Fluid is that the active material layer on negative current collector, negative current collector is anode active material layer.
Optionally, the polarity of two pole pieces of outermost is identical, and two pole pieces of outermost by a larger pole piece therefrom
Portion is bent to form.
Pole piece quantity is N, and two pole piece polarity of outermost are identical, i.e. N is the odd number more than or equal to 3, the application pole piece number
During amount is calculated, a larger pole piece calculates 2 pole pieces, and the larger pole piece is bent to form two smaller pole pieces, and this from middle part
Two smaller pole pieces are to be connected with each other.
Optionally, also including packaging film, the polymer material layer be PUR polymer material layer, the packaging film with
The PUR polymer material layer of two pole pieces of outermost by hot composite joint together.
Polymer material layer is PUR polymer material layer, is combined so that outside pole piece can carry out heat with packaging film,
This structure type is easy to process, and connection is reliable.
Optionally, the packaging film is aluminium plastic composite packaging film, and aluminium plastic composite packaging film includes hot melt adhesive layer, plastic-aluminum combined
The PUR polymer material layer of two pole pieces of the hot melt adhesive layer of packaging film and outermost is by together with hot composite joint.
Optionally, the thickness of the PUR polymer material layer is 10~100 μm, the PUR polymer material layer
For polymeric membrane, polymeric membrane is pasted onto in corresponding metal collector by binding agent.
Polymer material layer is polymeric membrane, and macromolecular material can quickly and easily be formed by binding agent by so setting
Layer.
Optionally, the thickness of the PUR polymer material layer is 10~100 μm, the PUR polymer material layer
Obtained by the way that the macromolecule of molten condition is coated in corresponding metal collector.
Furthermore, the material of PUR polymer material layer be ethene and its copolymer (EVA, EEA, EAA,
EVAL), polyamide (PA), polyester (PES) or polyolefin (PE, PP) etc., and preferably polypropylene (PP) PUR.
Disclosed herein as well is a kind of preparation method of thin-type secondary battery, including：
Anode pole piece is made, the anode pole piece includes plus plate current-collecting body, and the one side of plus plate current-collecting body is provided with positive pole work
Property material layer, another side is provided with PUR polymer material layer；
Cathode pole piece is made, the cathode pole piece includes negative current collector, and the one side of negative current collector is provided with negative pole work
Property material layer, another side is provided with PUR polymer material layer；
The hot melt adhesive layer of the PUR polymer material layer of anode pole piece and aluminium plastic composite packaging film is carried out into heat to be combined, made
Anode pole piece is fixed with aluminium plastic composite packaging film；By the PUR polymer material layer of cathode pole piece and aluminium plastic composite packaging film
Hot melt adhesive layer carries out heat and is combined, and cathode pole piece is fixed with aluminium plastic composite packaging film；
By aluminium plastic composite packaging film doubling, barrier film is put into so that anode pole piece, barrier film and cathode pole piece are successively in folded
Layer arrangement；
Electrolyte is injected into the aluminium plastic composite packaging film after doubling, and is packaged.
Thin-type secondary battery outermost pole piece only has one side to need to set active material layer, by being not required in metal collector
Set active material layer one side set polymer material layer, can offset or partial offset after roll-in because active material prolongs
Stress caused by exhibition, so as to solve the problems, such as caused pole piece clot after pole piece one side coating roll-in；Polymer material layer is
PUR polymer material layer, so that outside pole piece can be carried out with packaging film, heat is compound, and this structure type is easy to process, and
Connection is reliable.
During practice, electrolyte is injected for convenience, can first seal the both sides of the aluminium plastic composite packaging film after doubling,
An openning is stayed, electrolyte is injected into aluminium plastic composite packaging film by the openning.
Further, before injection electrolyte, the part in aluminium plastic composite packaging film is dried in vacuo.
Further, chemical conversion operation is carried out after injection electrolyte, be then packaged again, and partial volume is carried out after the completion of encapsulation
Operation.
Disclosed herein as well is the preparation method of second of thin-type secondary battery, including：
Anode pole piece is made, the anode pole piece includes plus plate current-collecting body, and the one side of plus plate current-collecting body is provided with positive pole work
Property material layer, another side is provided with PUR polymer material layer；
Cathode pole piece is made, the cathode pole piece includes negative current collector, and the two sides of negative current collector is provided with negative pole
Active material layer；
The hot melt adhesive layer of the PUR polymer material layer of anode pole piece and aluminium plastic composite packaging film is carried out into heat to be combined, made
Anode pole piece is fixed with aluminium plastic composite packaging film；
By aluminium plastic composite packaging film doubling, cathode pole piece and barrier film are put into, anode pole piece, barrier film, negative pole pole is formed
Piece, barrier film and anode pole piece fold the arrangement form set successively；
Electrolyte is injected into the aluminium plastic composite packaging film after doubling, and is packaged.
Disclosed herein as well is the preparation method of the third thin-type secondary battery, including：
Cathode pole piece is made, the cathode pole piece includes negative current collector, and the one side of negative current collector is provided with negative pole work
Property material layer, another side is provided with PUR polymer material layer；
Anode pole piece is made, the anode pole piece includes plus plate current-collecting body, and the two sides of plus plate current-collecting body is provided with positive pole
Active material layer；
The hot melt adhesive layer of the PUR polymer material layer of cathode pole piece and aluminium plastic composite packaging film is carried out into heat to be combined, made
Cathode pole piece is fixed with aluminium plastic composite packaging film；
By aluminium plastic composite packaging film doubling, anode pole piece and barrier film are put into, cathode pole piece, barrier film, positive pole pole is formed
Piece, barrier film and cathode pole piece fold the arrangement form set successively；
Electrolyte is injected into the aluminium plastic composite packaging film after doubling, and is packaged.
The beneficial effects of the invention are as follows：Thin-type secondary battery outermost pole piece only has one side to need to set active material layer,
Polymer material layer is set by that need not set the one side of active material layer in metal collector, can be offset or partial offset
The stress caused by active material extends after roll-in, so as to solve caused pole piece clot after pole piece one side coating roll-in
Problem.
Brief description of the drawings：
Fig. 1 is the sectional view of the pole piece with polymer material layer；
Fig. 2 is the aluminium plastic composite packaging film sectional view compound with outside pole piece heat；
Fig. 3 is the anode pole piece of embodiment 2 and negative plate heat is compounded in schematic diagram on aluminium plastic composite packaging film；
Fig. 4 is the schematic diagram that the anode pole piece heat of embodiment 3 is compounded on aluminium plastic composite packaging film；
Fig. 5 is the schematic diagram of the cathode pole piece of embodiment 3；
Fig. 6 is the schematic diagram that the cathode pole piece heat of embodiment 4 is compounded on aluminium plastic composite packaging film；
Fig. 7 is the schematic diagram of the anode pole piece of embodiment 4.
Each reference is in figure：
1st, metal collector；2nd, active material layer；3rd, polymer material layer；4th, outermost pole piece；5th, hot melt adhesive layer；6th, aluminium
Layer；7th, nylon layer；8th, aluminium plastic composite packaging film；9th, anode pole piece；10th, cathode pole piece；11st, anode pole piece；12nd, lug；13rd, bear
Pole pole piece.
Embodiment：
With reference to each accompanying drawing, the present invention is described in detail.
Embodiment 1
A kind of thin-type secondary battery, including at least one anode pole piece and at least one cathode pole piece, anode pole piece and negative
Pole pole piece is sequentially arranged at intervals, and each pole piece includes metal collector, as illustrated in fig. 1 and 2, the metal collection in outermost pole piece 4
The one side of fluid 1 towards other pole pieces is provided with active material layer 2, and another side is provided with polymer material layer 3；When pole piece quantity
During more than or equal to 3, the two sides of the metal collector of middle pole piece is provided with active material layer 2.
Thin-type secondary battery outermost pole piece only has one side to need to set active material layer, by being not required in metal collector
Set active material layer one side set polymer material layer, can offset or partial offset after roll-in because active material prolongs
Stress caused by exhibition, so as to solve the problems, such as caused pole piece clot after pole piece one side coating roll-in.Beaten by solving pole piece
Volume problem, improves the production efficiency of further battery assembling, and selects polymer material layer, saves cost, is easy to implement certainly
Dynamic metaplasia production, meanwhile, reduce pole piece and drop off, strengthen the intensity of pole piece, prevent the tear and breakage of pole piece.
Slim described in the application is relative concept, and for common batteries, thin-type secondary battery is very thin.This
The thin-type secondary battery of application, can only have 2 pole pieces (being 1 anode pole piece and 1 cathode pole piece respectively), it is possibility to have 3
Individual pole piece (be respectively 2 anode pole pieces and 1 cathode pole piece, or 1 anode pole piece and 2 cathode pole pieces), actual fortune
Used time, when thinness is less demanding, can also set 5, even more pole pieces.
In the present embodiment, barrier film, the metal collector of anode pole piece are provided between anode pole piece and cathode pole piece
For plus plate current-collecting body, the active material layer on plus plate current-collecting body is anode active material layer；The metal collector of cathode pole piece is
Active material layer on negative current collector, negative current collector is anode active material layer.
When pole piece quantity is more than or equal to 3, the polarity of two pole pieces of outermost is identical, and two pole pieces of outermost are except for two
Outside individual independent pole piece, can also from the center it be bent to form by a larger pole piece.
Pole piece quantity is N, and two pole piece polarity of outermost are identical, i.e. N is the odd number more than or equal to 3, the application pole piece number
During amount is calculated, a larger pole piece calculates 2 pole pieces, and the larger pole piece is bent to form two smaller pole pieces, and this from middle part
Two smaller pole pieces are to be connected with each other.
As shown in Fig. 2 in the present embodiment, also including packaging film, polymer material layer is PUR polymer material layer,
The PUR polymer material layer of two pole pieces of packaging film and outermost is by together with hot composite joint.Polymer material layer is
PUR polymer material layer, so that outside pole piece can be carried out with packaging film, heat is compound, and this structure type is easy to process, and
Connection is reliable.Furthermore, the material of PUR polymer material layer be ethene and its copolymer (EVA, EEA, EAA,
EVAL), polyamide (PA), polyester (PES) or polyolefin (PE, PP) etc., and preferably polypropylene (PP) PUR.
As shown in Fig. 2 in the present embodiment, packaging film is aluminium plastic composite packaging film 8, aluminium plastic composite packaging film includes hot melt
Glue-line 5, the hot melt adhesive layer 5 of aluminium plastic composite packaging film is multiple by heat with the PUR polymer material layer 3 of two pole pieces of outermost
Conjunction links together.Hot recombination process is as follows：Under pole piece positioning fixture, 170 ± 3 DEG C of the copper mold above and below, pressure 0.23 ±
0.03MPa/cm2, seal 3~5 seconds time.
As shown in Fig. 2 the aluminium plastic composite packaging film 8 of the present embodiment includes outermost nylon layer 7, positioned at middle aluminium lamination
6 and the hot melt adhesive layer 5 positioned at inner side, and in the present embodiment, hot melt adhesive layer 5 is polypropylene (PP) resin.
The degree of the thickness effect pole piece clot of PUR polymer material layer, is different-thickness polypropylene as shown in table 1
(PP) the clot degree contrast table after anode pole piece is made in PUR, and the metal collector of the anode pole piece corresponding to the table is 12
μm aluminium foil, active material is 58 μm of positive active material (identical with the positive active material in embodiment 2), the application
In, the degree of pole piece clot is respectively on earth by height：It is high, middle it is high, in, in low, low and not clot.In actual production process, beat
Volume degree just has substantially no effect on production less than or equal to middle low degree.
Table 1
| Sequence number | PUR polymer material layer | Thickness (unit μm) | Pole piece clot degree |
| 1 | Polypropylene (PP) | 3 | It is high |
| 2 | Polypropylene (PP) | 5 | Middle height |
| 3 | Polypropylene (PP) | 8 | In |
| 4 | Polypropylene (PP) | 10 | In it is low |
| 5 | Polypropylene (PP) | 15 | In it is low |
| 6 | Polypropylene (PP) | 18 | It is low |
| 7 | Polypropylene (PP) | 23 | Not clot |
| 8 | Polypropylene (PP) | 30 | Not clot |
| 9 | Polypropylene (PP) | 55 | Not clot |
| 10 | Polypropylene (PP) | 80 | Not clot |
| 11 | Polypropylene (PP) | 100 | Not clot |
It can be seen from table 1, when PUR polymer material layer is polypropylene (PP), polypropylene (PP) thickness is most for 23 μm
It is preferred that scheme, the thickness of pole piece can be farthest reduced while not clot.
Applicant passes through to ethene and its copolymer (EVA, EEA, EAA, EVAL), polyamide (PA), polyester (PES) or poly-
The experiment many times of the PUR polymer material layers such as alkene (PE, PP), find each hot melt adhesive polymer material layer 10~
Can preferably it be offset at 100 μm or partial offset stress caused by active material extends after roll-in.PUR macromolecule
Layer thickness is less than 10 μm, does not serve, and pole piece still clot and can influence to produce, and if thickness is too big, then for
Ultra-thin plastic-aluminum flexible packing lithium battery is nonsensical.
In the present embodiment, polymer material layer by wet method or dry laminating in metal collector, when using dry method
Compound tense, polymer material layer is polymeric membrane, and polymeric membrane is pasted onto in metal collector by binding agent.When using wet
Method compound tense, polymer material layer is obtained by the way that the macromolecule of molten condition is coated in metal collector.
Embodiment 2
As shown in figure 3, present embodiment discloses a kind of preparation method of thin-type secondary battery, including：
Anode pole piece 9 is made, anode pole piece includes plus plate current-collecting body, and the one side of plus plate current-collecting body is provided with positive-active material
The bed of material, another side is provided with PUR polymer material layer, structure and the outermost of embodiment 1 of the anode pole piece 9 of the present embodiment
The structure of pole plate is identical.In the present embodiment, prepared by anode pole piece concretely comprises the following steps：By positive active material cobalt acid lithium, bonding
Agent Kynoar (PVDF) and conductive agent conductive black (94~98) in mass ratio:(1~3):(1~3) and solvent N- first
Base pyrrolidones is well mixed, and is obtained finely dispersed anode sizing agent through high-speed stirred, is then uniformly coated on anode sizing agent
On the plus plate current-collecting body one side aluminium foil of 10~14 μ m-thicks, then carry out forced air drying, then by polypropylene (PP) PUR of 23 μ m-thicks
Film (one kind of PUR polymer material layer) is compound on the aluminium foil of another side, after through cold pressing, cross cutting obtain corresponding size
Anode pole piece, in the present embodiment, anode pole piece thickness be 90 μm, a width of 21mm, a height of 25mm, anode pole piece also include pole
Ear 12.
Cathode pole piece 10 is made, cathode pole piece includes negative current collector, and the one side of negative current collector is provided with negative electrode active
Material layer, another side is provided with PUR polymer material layer, structure and the outermost of embodiment 1 of the cathode pole piece 10 of the present embodiment
The structure of side pole plate is identical；In the present embodiment, prepared by cathode pole piece concretely comprises the following steps：By negative electrode active material graphite, bonding
Agent butadiene-styrene rubber (SBR), sodium carboxymethylcellulose (CMC) and conductive agent conductive black (94.6~96) in mass ratio:(1.8
~2.2):(1.5~2):(0.7~1.2) is well mixed with solvent deionized water, and finely dispersed negative pole is obtained through high-speed stirred
Cathode size, is then uniformly coated on the negative current collector one side Copper Foil of 8~10 μ m-thicks by slurry, then carries out forced air drying,
Polypropylene (PP) hot melt adhesive film (one kind of PUR polymer material layer) of 23 μ m-thicks is compound on the Copper Foil of another side again,
After through cold pressing, cross cutting obtains the cathode pole piece of corresponding size, in the present embodiment, and cathode pole piece thickness is 100 μm, a width of
22mm, a height of 26mm, cathode pole piece also include lug 12.
Electrolyte is made：LiPF6 and ethylene carbonate (EC) and methyl ethyl carbonate (EMC) are configured to 1.0mol/L's
(wherein, EC and EMC mass ratioes are 3 to LiPF6 solution：7) nonaqueous electrolytic solution, is obtained；
By (this implementation of aluminium plastic composite packaging film 8 of the PUR polymer material layer of a piece of anode pole piece 9 and 88 μ m thicks
Example aluminium plastic composite packaging film 8 it is identical with the aluminium plastic composite packaging membrane structure of embodiment 1) hot melt adhesive layer carry out heat be combined, make
Anode pole piece is fixed with aluminium plastic composite packaging film；By the PUR polymer material layer and aluminium plastic composite packaging of a piece of cathode pole piece
It is compound that the hot melt adhesive layer of film carries out heat, cathode pole piece is fixed with aluminium plastic composite packaging film, sees Fig. 3, formation pole piece, plastic-aluminum combined
Packaging film integrated electrode；Wherein, hot recombination process is:Under pole piece positioning fixture, using 170 ± 3 DEG C of copper mold, pressure up and down
0.23±0.03MPa/cm2, seal 3~5 seconds time.
By pole piece, aluminium plastic composite packaging film integrated electrode doubling, 12 μm of barrier films are put into so that anode pole piece, isolation
Film and cathode pole piece are arranged in lamination successively；
Electrolyte is injected into the aluminium plastic composite packaging film after doubling, and is packaged.
Thin-type secondary battery outermost pole piece only has one side to need to set active material layer, by being not required in metal collector
Set active material layer one side set polymer material layer, can offset or partial offset after roll-in because active material prolongs
Stress caused by exhibition, so as to solve the problems, such as caused pole piece clot after pole piece one side coating roll-in；Polymer material layer is
PUR polymer material layer, so that outside pole piece can be carried out with packaging film, heat is compound, and this structure type is easy to process, and
Connection is reliable.
During practice, electrolyte is injected for convenience, can first seal the both sides of the aluminium plastic composite packaging film after doubling,
An openning is stayed, electrolyte is injected into aluminium plastic composite packaging film by the openning.
Further, before injection electrolyte, the part in aluminium plastic composite packaging film is dried in vacuo.
Further, chemical conversion operation is carried out after injection electrolyte, be then packaged again, and partial volume is carried out after the completion of encapsulation
Operation, finally obtained thickness is 0.38mm, and capacity is 18mAh thin-type secondary battery.
Embodiment 3
As shown in Figures 4 and 5, present embodiment discloses a kind of preparation method of thin-type secondary battery, including：
Anode pole piece is made, anode pole piece includes plus plate current-collecting body, and the one side of plus plate current-collecting body is provided with positive-active material
The bed of material, another side is provided with PUR polymer material layer, the present embodiment, specific steps and embodiment prepared by anode pole piece
2 is identical the step of preparing anode pole piece, and difference is, in the present embodiment, and the thickness of anode pole piece 4 is 90 μm, a width of
42.2mm, a height of 25mm.
Cathode pole piece 10 is made, cathode pole piece includes negative current collector, and the two sides of negative current collector is provided with negative pole work
Property material layer；In the present embodiment, prepared by cathode pole piece concretely comprises the following steps：Negative pole is prepared according to the corresponding steps in embodiment 2
Slurry, then by cathode size double spread on 9 μm of Copper Foils, after through cold pressing, cross cutting obtains thickness for 148 μm, a width of
22mm, a height of 26mm cathode pole piece 10.
By the aluminium plastic composite packaging film 8 of the PUR polymer material layer of anode pole piece and 88 μ m thicks (the present embodiment
Aluminium plastic composite packaging film 8 is identical with the aluminium plastic composite packaging membrane structure of embodiment 1) hot melt adhesive layer to carry out heat compound, make positive pole
Pole piece is fixed with aluminium plastic composite packaging film, sees Fig. 4, hot composition process is in the same manner as in Example 2.
By aluminium plastic composite packaging film doubling, cathode pole piece 10 and barrier film are put into, anode pole piece, barrier film, negative pole is formed
Pole piece, barrier film and anode pole piece fold the arrangement form set successively；
Electrolyte is injected into the aluminium plastic composite packaging film after doubling, and is packaged.
During practice, electrolyte is injected for convenience, can first seal the both sides of the aluminium plastic composite packaging film after doubling,
An openning is stayed, electrolyte is injected into aluminium plastic composite packaging film by the openning.
Further, before injection electrolyte, the part in aluminium plastic composite packaging film is dried in vacuo.
Further, chemical conversion operation is carried out after injection electrolyte, be then packaged again, and partial volume is carried out after the completion of encapsulation
Operation, finally obtained thickness is 0.53mm, and capacity is 34mAh thin-type secondary battery.
In the present embodiment, in order to which technique is simple and convenient, the anode pole piece of preparation is larger, so as to can form two after bending
The individual region coordinated with cathode pole piece respective side, in other embodiment, can prepare the anode pole piece of normal size, and now two
Individual anode pole piece and a cathode pole piece coordinate, and two anode pole pieces are separately positioned on the both sides of cathode pole piece 10.
In the present embodiment, barrier film is a piece of of middle part bending, and barrier film can be separate 2 during practice
Piece, and 2 barrier films are separately positioned on the both sides of cathode pole piece.
Embodiment 4
As shown in Figures 6 and 7, present embodiment discloses a kind of preparation method of thin-type secondary battery, including：
Cathode pole piece is made, cathode pole piece includes negative current collector, and the one side of negative current collector is provided with negative electrode active material
The bed of material, another side is provided with PUR polymer material layer, the present embodiment, and specific steps and the embodiment 2 of cathode pole piece are made
The step of standby cathode pole piece, is identical, and difference is that the thickness of cathode pole piece 13 is 99 μm, a width of 44.2mm, a height of 26mm.
Anode pole piece 9 is made, anode pole piece includes plus plate current-collecting body, and the two sides of plus plate current-collecting body is provided with positive-active
Material layer；In the present embodiment, prepared by anode pole piece concretely comprises the following steps：Positive pole slurry is prepared according to the corresponding steps in embodiment 2
Material, then anode and cathode slurry double spread on 12 μm of aluminium foils, after through cold pressing, to obtain thickness be 122 μm to cross cutting, a width of
21mm, a height of 25mm anode pole piece.
By the aluminium plastic composite packaging film 8 of the PUR polymer material layer of cathode pole piece and 88 μ m thicks (the present embodiment
Aluminium plastic composite packaging film 8 is identical with the aluminium plastic composite packaging membrane structure of embodiment 1) hot melt adhesive layer to carry out heat compound, make negative pole
Pole piece is fixed with aluminium plastic composite packaging film, sees Fig. 6, hot composition process is in the same manner as in Example 2.
By aluminium plastic composite packaging film doubling, anode pole piece 9 and barrier film are put into, cathode pole piece, barrier film, positive pole pole is formed
Piece, barrier film and cathode pole piece fold the arrangement form set successively；
Electrolyte is injected into the aluminium plastic composite packaging film after doubling, and is packaged.
During practice, electrolyte is injected for convenience, can first seal the both sides of the aluminium plastic composite packaging film after doubling,
An openning is stayed, electrolyte is injected into aluminium plastic composite packaging film by the openning.
Further, before injection electrolyte, the part in aluminium plastic composite packaging film is dried in vacuo.
Further, chemical conversion operation is carried out after injection electrolyte, be then packaged again, and partial volume is carried out after the completion of encapsulation
Operation, finally gives thickness for 0.52mm, and capacity is 34mAh thin-type secondary battery.
In the present embodiment, in order to which technique is simple and convenient, the cathode pole piece of preparation is larger, so as to can form two after bending
The individual region coordinated with anode pole piece respective side, in other embodiment, can prepare the cathode pole piece of normal size, and now two
Individual cathode pole piece and an anode pole piece coordinate, and two cathode pole pieces are separately positioned on the both sides of anode pole piece 9.
In the present embodiment, barrier film is a piece of of middle part bending, and barrier film can be separate 2 during practice
Piece, and 2 barrier films are separately positioned on the both sides of anode pole piece.
The preferred embodiments of the present invention are the foregoing is only, the scope of patent protection of the present invention is not thereby limited, it is all
It is the equivalent structure transformation made with description of the invention and accompanying drawing content, is directly or indirectly used in other related technologies
Field, similarly includes within the scope of the present invention.
Claims (10)
1. a kind of thin-type secondary battery, including at least one anode pole piece and at least one cathode pole piece, the anode pole piece and
Cathode pole piece is sequentially arranged at intervals, and each pole piece includes metal collector, it is characterised in that the metal afflux in outermost pole piece
Dignity is provided with active material layer to the one side of other pole pieces, and another side is provided with polymer material layer；When pole piece quantity is more than
During equal to 3, the two sides of the metal collector of middle pole piece is provided with active material layer.
2. thin-type secondary battery as claimed in claim 1, it is characterised in that set between the anode pole piece and cathode pole piece
There is barrier film, the metal collector of the anode pole piece is that the active material layer on plus plate current-collecting body, plus plate current-collecting body is positive pole
Active material layer；The metal collector of the cathode pole piece is that the active material layer on negative current collector, negative current collector is negative
Pole active material layer.
3. thin-type secondary battery as claimed in claim 1, it is characterised in that the polarity of two pole pieces of outermost is identical, and most
Two, outside pole piece is bent to form from the center by a larger pole piece.
4. thin-type secondary battery as claimed in claim 1, it is characterised in that also including packaging film, the polymer material layer
For PUR polymer material layer, the PUR polymer material layer of the packaging film and two pole pieces of outermost is combined by heat
Link together.
5. thin-type secondary battery as claimed in claim 4, it is characterised in that the packaging film is aluminium plastic composite packaging film, aluminium
Moulding composite package film includes hot melt adhesive layer, the hot melt adhesive layer of aluminium plastic composite packaging film and the PUR high score of two pole pieces of outermost
Sub- material layer by hot composite joint together.
6. thin-type secondary battery as claimed in claim 4, it is characterised in that the thickness of the PUR polymer material layer is
10~100 μm, the PUR polymer material layer is polymeric membrane, and polymeric membrane is pasted onto corresponding metal by binding agent
On collector.
7. thin-type secondary battery as claimed in claim 4, it is characterised in that the thickness of the PUR polymer material layer is
10~100 μm, the PUR polymer material layer by the macromolecule of molten condition by being coated on corresponding metal collector
On obtain.
8. a kind of preparation method of thin-type secondary battery, it is characterised in that including：
Anode pole piece is made, the anode pole piece includes plus plate current-collecting body, and the one side of plus plate current-collecting body is provided with positive-active material
The bed of material, another side is provided with PUR polymer material layer；
Cathode pole piece is made, the cathode pole piece includes negative current collector, and the one side of negative current collector is provided with negative electrode active material
The bed of material, another side is provided with PUR polymer material layer；
The hot melt adhesive layer of the PUR polymer material layer of anode pole piece and aluminium plastic composite packaging film is carried out into heat to be combined, makes positive pole
Pole piece is fixed with aluminium plastic composite packaging film；By the PUR polymer material layer of cathode pole piece and the hot melt of aluminium plastic composite packaging film
Glue-line carries out heat and is combined, and cathode pole piece is fixed with aluminium plastic composite packaging film；
By aluminium plastic composite packaging film doubling, barrier film is put into so that anode pole piece, barrier film and cathode pole piece are folded set successively；
Electrolyte is injected into the aluminium plastic composite packaging film after doubling, and is packaged.
9. a kind of preparation method of thin-type secondary battery, it is characterised in that including：
Anode pole piece is made, the anode pole piece includes plus plate current-collecting body, and the one side of plus plate current-collecting body is provided with positive-active material
The bed of material, another side is provided with PUR polymer material layer；
Cathode pole piece is made, the cathode pole piece includes negative current collector, and the two sides of negative current collector is provided with negative electrode active
Material layer；
The hot melt adhesive layer of the PUR polymer material layer of anode pole piece and aluminium plastic composite packaging film is carried out into heat to be combined, makes positive pole
Pole piece is fixed with aluminium plastic composite packaging film；
By aluminium plastic composite packaging film doubling, be put into cathode pole piece and barrier film, formed anode pole piece, barrier film, cathode pole piece, every
Fold the arrangement form set successively from film, anode pole piece；
Electrolyte is injected into the aluminium plastic composite packaging film after doubling, and is packaged.
10. a kind of preparation method of thin-type secondary battery, it is characterised in that including：
Cathode pole piece is made, the cathode pole piece includes negative current collector, and the one side of negative current collector is provided with negative electrode active material
The bed of material, another side is provided with PUR polymer material layer；
Anode pole piece is made, the anode pole piece includes plus plate current-collecting body, and the two sides of plus plate current-collecting body is provided with positive-active
Material layer；
The hot melt adhesive layer of the PUR polymer material layer of cathode pole piece and aluminium plastic composite packaging film is carried out into heat to be combined, makes negative pole
Pole piece is fixed with aluminium plastic composite packaging film；
By aluminium plastic composite packaging film doubling, be put into anode pole piece and barrier film, formed cathode pole piece, barrier film, anode pole piece, every
Fold the arrangement form set successively from film, cathode pole piece；
Electrolyte is injected into the aluminium plastic composite packaging film after doubling, and is packaged.
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| CN201710317445.6A CN106960976A (en) | 2017-05-05 | 2017-05-05 | Thin-type secondary battery and preparation method thereof |
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| CN201710317445.6A CN106960976A (en) | 2017-05-05 | 2017-05-05 | Thin-type secondary battery and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108717967A (en) * | 2018-07-13 | 2018-10-30 | 柔电（武汉）科技有限公司 | A kind of ultra-thin battery core and preparation method, ultrathin lithium ion battery and preparation method |
| CN110061182A (en) * | 2019-05-21 | 2019-07-26 | 宁德新能源科技有限公司 | Battery pole piece and battery core |
| CN110313096A (en) * | 2017-11-22 | 2019-10-08 | 株式会社Lg化学 | Electrode, electrode assembly and its manufacturing method |
| CN112349953A (en) * | 2020-10-27 | 2021-02-09 | 珠海冠宇动力电池有限公司 | Lithium ion battery |
| CN113410524A (en) * | 2021-05-31 | 2021-09-17 | 惠州市恒泰科技股份有限公司 | Arc-shaped laminated lithium battery and laminating method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434531A (en) * | 2002-01-21 | 2003-08-06 | Nec东金株式会社 | Battery and electric double-layer capacitor |
| CN1577919A (en) * | 2003-07-08 | 2005-02-09 | 三星Sdi株式会社 | Negative electrode for rechargeable lithium battery, method of producing same and rechargeable lithium battery comprising same |
| TW200522413A (en) * | 2003-12-16 | 2005-07-01 | Ind Tech Res Inst | Diy thin film battery |
| CN1767254A (en) * | 2005-11-18 | 2006-05-03 | 中国科学院上海微***与信息技术研究所 | Thin lithium ion battery and preparation method |
| CN102623667A (en) * | 2011-01-28 | 2012-08-01 | 力佳电源科技(深圳)有限公司 | Soft package thin and ultrathin cell structure and manufacturing method thereof |
| JP2012209126A (en) * | 2011-03-29 | 2012-10-25 | Fdk Tottori Co Ltd | Thin-film primary battery |
| WO2013027306A1 (en) * | 2011-08-22 | 2013-02-28 | パナソニック株式会社 | Thin secondary battery |
| CN103190015A (en) * | 2010-09-03 | 2013-07-03 | 日本电气株式会社 | Non-aqueous secondary battery and method for manufacturing non-aqueous secondary battery |
| CN106299239A (en) * | 2015-05-13 | 2017-01-04 | 深圳市博亿能科技有限公司 | A kind of battery pole piece and ultra-thin flexible-packed battery |
| CN206921933U (en) * | 2017-05-05 | 2018-01-23 | 杭州金色能源科技有限公司 | Thin-type secondary battery |
-
2017
- 2017-05-05 CN CN201710317445.6A patent/CN106960976A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434531A (en) * | 2002-01-21 | 2003-08-06 | Nec东金株式会社 | Battery and electric double-layer capacitor |
| CN1577919A (en) * | 2003-07-08 | 2005-02-09 | 三星Sdi株式会社 | Negative electrode for rechargeable lithium battery, method of producing same and rechargeable lithium battery comprising same |
| TW200522413A (en) * | 2003-12-16 | 2005-07-01 | Ind Tech Res Inst | Diy thin film battery |
| CN1767254A (en) * | 2005-11-18 | 2006-05-03 | 中国科学院上海微***与信息技术研究所 | Thin lithium ion battery and preparation method |
| CN103190015A (en) * | 2010-09-03 | 2013-07-03 | 日本电气株式会社 | Non-aqueous secondary battery and method for manufacturing non-aqueous secondary battery |
| CN102623667A (en) * | 2011-01-28 | 2012-08-01 | 力佳电源科技(深圳)有限公司 | Soft package thin and ultrathin cell structure and manufacturing method thereof |
| JP2012209126A (en) * | 2011-03-29 | 2012-10-25 | Fdk Tottori Co Ltd | Thin-film primary battery |
| WO2013027306A1 (en) * | 2011-08-22 | 2013-02-28 | パナソニック株式会社 | Thin secondary battery |
| CN106299239A (en) * | 2015-05-13 | 2017-01-04 | 深圳市博亿能科技有限公司 | A kind of battery pole piece and ultra-thin flexible-packed battery |
| CN206921933U (en) * | 2017-05-05 | 2018-01-23 | 杭州金色能源科技有限公司 | Thin-type secondary battery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110313096A (en) * | 2017-11-22 | 2019-10-08 | 株式会社Lg化学 | Electrode, electrode assembly and its manufacturing method |
| US11476468B2 (en) | 2017-11-22 | 2022-10-18 | Lg Energy Solution, Ltd. | Electrode, electrode assembly and method for manufacturing the same |
| CN108717967A (en) * | 2018-07-13 | 2018-10-30 | 柔电（武汉）科技有限公司 | A kind of ultra-thin battery core and preparation method, ultrathin lithium ion battery and preparation method |
| CN110061182A (en) * | 2019-05-21 | 2019-07-26 | 宁德新能源科技有限公司 | Battery pole piece and battery core |
| US11817543B2 (en) | 2019-05-21 | 2023-11-14 | Ningde Amperex Technology Limited | Electrode sheet and battery cell |
| CN112349953A (en) * | 2020-10-27 | 2021-02-09 | 珠海冠宇动力电池有限公司 | Lithium ion battery |
| CN113410524A (en) * | 2021-05-31 | 2021-09-17 | 惠州市恒泰科技股份有限公司 | Arc-shaped laminated lithium battery and laminating method thereof |
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