CN107696471A - A kind of 3D printing method of flexible battery - Google Patents

A kind of 3D printing method of flexible battery Download PDF

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Publication number
CN107696471A
CN107696471A CN201710936374.8A CN201710936374A CN107696471A CN 107696471 A CN107696471 A CN 107696471A CN 201710936374 A CN201710936374 A CN 201710936374A CN 107696471 A CN107696471 A CN 107696471A
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printing
flexible battery
negative
slurry
positive
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CN107696471B (en
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丁超
黄健鹏
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Dongguan South China Design and Innovation Institute
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Dongguan South China Design and Innovation Institute
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00Processes of additive manufacturing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00Materials specially adapted for additive manufacturing
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04Homopolymers or copolymers of esters
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04Polyurethanes
    • C08L75/14Polyurethanes having carbon-to-carbon unsaturated bonds
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139Processes of manufacture
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium
    • C08K2003/2241Titanium dioxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/38Boron-containing compounds
    • C08K2003/387Borates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/20Applications use in electrical or conductive gadgets
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)

Abstract

The invention discloses a kind of 3D printing method of flexible battery, and it mainly includes three-dimensional modeling, then sequentially prints matrix, collector, positive/negative and the baffle plate of flexible battery, and is packaged with base lid, and injection electrolyte produces.The present invention is improved the structures of traditional interdigitated electrodes so that it can be applied to flexible battery, during use will not Collapse Deformation, remain to keep excellent chemical property after repeatedly bending.

Description

A kind of 3D printing method of flexible battery
Technical field
The invention belongs to a kind of 3D printing method of field of new energy technologies, more particularly to flexible battery.
Background technology
3D printing (3D printing) technology is also known as three-dimensional printing technology, is a kind of based on mathematical model file, fortune With powdery metal or plastics etc. can jointing material, come the technology of constructed object by way of successively printing.It is without machinery Processing or any mould, the part of any shape can be just generated directly from computer graphics data, so as to greatly shorten production The lead time of product, improve productivity ratio and reduce production cost.
Increasingly perfect with 3D printing technique, 3D printing technique is widely used to military affairs, electronics, medical science, biology, new The fields such as the energy, especially new 3D printing integrate lithium ion battery appearance, effectively realize lithium ion battery anode and cathode and The effective integration of its package system, the ratio of active material in battery electrode material is substantially increased, shortens lithium ion battery Migration distance in charge and discharge process, improve the diffusion rate and mobility of lithium ion.
However, the lithium ion battery prepared by existing 3D printing technique is generally the interdigital knot of anode and cathode for not needing barrier film Structure, this structure are easy to print, but Volume Changes are notable in lithium storing process and stress is larger for lithium ion battery electrode material, Electrode is yielding in charge and discharge process or even caves in.If this anode and cathode interdigital structure is applied into flexible battery, pass through Repeatedly restored after bending deformation, the rate of decay of electrode is faster.Therefore, said structure is improved based on 3D printing technique, It is the key for solving this problem.
The content of the invention
Present invention seek to address that structure easily caves in, is not suitable for flexible battery in existing interdigitated electrodes charge and discharge process The shortcomings of, there is provided a kind of 3D printing method of flexible battery.This method is improved the structure of traditional interdigitated electrodes, Flexible battery can be used for, the structural integrity in charge and discharge process, restored by repeatedly bending, structure is still complete, jail Gu.In addition, it also increases the ratio of electrode material activity material in flexible battery, the electrochemistry of flexible battery is improved Energy.
In order to achieve the above object, present invention employs following technical scheme:
A kind of 3D printing method of flexible battery, mainly comprises the following steps:(1) modeled using three-dimensional software, design is soft The property cell matrix and structure of base lid, the shape of collector and position, the shape of positive/negative slurry and position, the shape of baffle plate And position;(2) according to three dimensional model printing flexible battery matrix and base lid, wherein, matrix and base lid indoor design, which have, mutually nibbles The triangle toothed surface of conjunction;(3) conductive material is printed to the toothed surface of matrix, interdigital collector is formed, wherein intersecting The root of finger-type collector and the top crest line of the triangle are perpendicular, and the finger portion of the interdigital collector is positioned at described Two waists of triangle are simultaneously parallel with the top crest line of the triangle;(4) positive/negative slurry is printed into positive/negative afflux On body, the positive/negative of flexible battery is formed;(5) baffle plate, the distance from top triangle of the baffle plate are printed between positive/negative The distance of central plane is more than or equal to the positive/negative collector and the positive/negative thickness sum;(6) collective and base lid are encapsulated Together, its lance tooth shape area mutually coincide, and its internal voids forms the memory space of electrolyte.
As the improved technical scheme of the present invention, multiple holes are distributed with the plane of the baffle plate.
As the improved technical scheme of the present invention, the one of which material in the positive/negative active material is beaten in U-typed It is imprinted on negative or positive electrode collector, another material is printed upon on negative pole or plus plate current-collecting body in T-shape.
As the improved technical scheme of the present invention, the junction between the central plane of triangle two is tangent with two central planes Cambered surface, positive/negative are located in the central plane of triangle and avoid the cambered surface.
Further, the angle between the central plane and central plane is 30~75 °, the length of the central plane and the cambered surface The ratio between radius is 30:1~10:1.
Preferably, the angle between the central plane and central plane is 40~60 °, the length of the central plane and the half of the cambered surface The ratio between footpath is 20:1~15:1.
As the improved technical scheme of the present invention, the base of the triangle is located on the split of described matrix.
As the improved technical scheme of the present invention, described matrix, base lid, the printing technology of baffle plate are:By 1~8%wt fluorine Boric acid diazol is dissolved in 10~20%wt 2-ethyl hexyl acrylates, and it is equal to add 0.01~1%wt titanic oxide nano ultrasonic disperses It is even, then add 10~25%wt containing hydrogen silicone oils, 15~30%wt acrylate, 15~60%wt polyurethane acroleic acid trees Fat, 0.1~2%wt DAAs, 0.1~2%wt octanols mix, and form mixed slurry;High-speed stirred, ultrasonic disperse Mixed slurry simultaneously repeats repeatedly, every kind of material in mixed slurry is uniformly dispersed, obtains photocuring 3D printing slurry;Will In the photocuring 3D printing slurry injection 3D printer, the wavelength for adjusting curing light source is 300~400nm, and every layer of printing is thick Spend for 100~2000 μm, the time for exposure is 2~10s.
Further, described matrix, base lid, the printing technology of baffle plate are:2~6%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 12 In~18%wt 2-ethyl hexyl acrylates, addition 0.1~0.5%wt titanic oxide nano ultrasonic disperses are uniform, then add 15 ~22%wt containing hydrogen silicone oils, 20~28%wt acrylate, 24~48%wt polyurethane acrylic resins, 0.5~1.5%wt bis- Pyruvic alcohol, 0.5~1.5%wt octanols mix, and form mixed slurry;High-speed stirred, ultrasonic disperse mixed slurry are laid equal stress on Multiple operation is multiple, every kind of material in mixed slurry is uniformly dispersed, obtains photocuring 3D printing slurry;By the photocuring 3D Print in slurry injection 3D printer, the wavelength for adjusting curing light source is 350~400nm, and every layer of print thickness is 500~1000 μm, the time for exposure is 4~8s.
Preferably, described matrix, base lid, the printing technology of baffle plate are:4%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 15%wt third In olefin(e) acid monooctyl ester, add 0.3%wt titanic oxide nano ultrasonic disperses it is uniform, then add 20%wt containing hydrogen silicone oils, 25%wt acrylate, 33.7%wt polyurethane acrylic resins, 1%wt DAAs, 1%wt octanols mix, shape Into mixed slurry;High-speed stirred, ultrasonic disperse mixed slurry simultaneously repeat repeatedly, disperse every kind of material in mixed slurry Uniformly, photocuring 3D printing slurry is obtained;The photocuring 3D printing slurry is injected in 3D printer, adjusts curing light source Wavelength is 365nm, and every layer of print thickness is 500 μm, time for exposure 5s.
Beneficial effect:
The present invention is improved traditional interdigital electrode configuration, the positive/negative of battery is located at triangular ramp It on central plane, on the one hand can increase the amount of positive/negative active material, improve the chemical property of flexible battery, the opposing party Face, for flexible battery when by bending stress, two central plane junctions of triangle will be by great squeezing action power, but triangle The central plane of shape will not be influenceed by bending stress, i.e., positive/negative active material will not be by the shadow of flexible battery flexural deformation Ring.In addition, also printing overhead gage between positive/negative, effectively positive/negative is limited in the groove of baffle plate composition and given Positive/negative active material supporting force, it is therefore prevented that Collapse Deformation occurs in charge and discharge process for positive/negative active material, just/ Negative material is connected and causes flexible battery short-circuit.Present invention also offers matrix, base lid, the printing technology of baffle plate, process letter It is single, obtained matrix, base lid, baffle plate flexible and tough sexual satisfaction flexible battery needs, grasped by multiple bending, discharge and recharge etc. It is not broken after work, non-brittle.
Brief description of the drawings
Fig. 1 is the matrix of the present invention and the structural representation of base lid;
Fig. 2 is the electrode structure distribution map of one of triangular surface;
Fig. 3 is the structural representation of triangle toothed surface;
Fig. 4 is the structural representation after matrix and base lid encapsulation.
Embodiment
In order that those skilled in the art becomes apparent from legibly understanding the present invention, in conjunction with accompanying drawing and specific embodiment party Formula, the present invention is described in detail.
The 3D printing method of the flexible battery of the present invention, mainly comprises the following steps:(1) modeled using three-dimensional software, if Count flexible battery matrix 1 and the structure of base lid 2, the shape of collector (4,4 ') and position, the shape of positive/negative (7,7 ') slurry With position, the shape of baffle plate 8 and position;(2) according to three dimensional model printing flexible battery matrix 1 and base lid 2, wherein, the He of matrix 1 The indoor design of base lid 2 has intermeshing triangle toothed surface, as shown in Figure 1;(3) conductive material is printed to the tooth of matrix 1 Shape face, form interdigital collector (4,4 '), the wherein root of interdigital collector (4,4 ') and the top of the triangle Portion's crest line is perpendicular, the finger portion of the interdigital collector (4,4 ') be located at two waists of the triangle and with the triangle Top crest line it is parallel (such as Fig. 1 amplification region 3);(4) by positive/negative (7,7 ') slurry print to positive/negative collector (4, 4 ') on, the positive/negative (7,7 ') of flexible battery is formed, it is preferable that wherein one in positive/negative (7, the 7 ') active material Kind material is printed upon on negative or positive electrode collector (4,4 ') in U-typed, and another material is printed upon negative pole or positive pole in T-shape On collector (4,4 ') as shown in Figure 2;(5) baffle plate 8, the distance from top three of the baffle plate 8 are printed between positive/negative (7,7 ') The distance of angular central plane 5 is more than or equal to the positive/negative collector (4,4 ') and the positive/negative (7,7 ') thickness sum, such as Shown in Fig. 3;(6) collective and base lid 2 are packaged together, its lance tooth shape area mutually coincide, and its internal voids forms electrolysis The memory space of liquid, as shown in Figure 4.Preferably, multiple holes are distributed with the plane of the baffle plate 8, facilitate electrolyte positive/negative Flowed between (7,7 ') pole.
In order to reduce active force of the bending stress to the junction of two central plane of triangle 5, between the central plane 5 of triangle two Junction is the cambered surface 6 tangent with two central planes 5, and positive/negative (7,7 ') is located in the central plane 5 of triangle and avoids the cambered surface 6. Further, the angle between the central plane 5 and central plane 5 is 30~75 °, the radius of the length of the central plane 5 and the cambered surface 6 The ratio between be 30:1~10:1.Preferably, the angle between the central plane 5 and central plane 5 is 40~60 °, the length of the central plane 5 with The ratio between radius of the cambered surface 6 is 20:1~15:1.
In order to improve the overall structural strength of flexible battery, the base of triangle is preferably located on the split of matrix 1.
In addition, present invention also offers matrix 1, base lid 2, the printing technology of baffle plate 8, comprise the following steps:By 1~8% Wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 10~20%wt 2-ethyl hexyl acrylates, add 0.01~1%wt titanic oxide nanos ultrasound point Dissipate uniformly, then add 10~25%wt containing hydrogen silicone oils, 15~30%wt acrylate, 15~60%wt polyurethane acroleic acids Resin, 0.1~2%wt DAAs, 0.1~2%wt octanols mix, and form mixed slurry;High-speed stirred, ultrasound point Dissipate mixed slurry and repeat repeatedly, every kind of material in mixed slurry is uniformly dispersed, obtain photocuring 3D printing slurry; The photocuring 3D printing slurry is injected in 3D printer 9, the wavelength for adjusting curing light source is 300~400nm, and every layer prints Thickness is 100~2000 μm, and the time for exposure is 2~10s.
Matrix 1, base lid 2, the embodiment of the printing technology of baffle plate 8 are as shown in embodiment 1-5.
Embodiment 1
8%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 20%wt 2-ethyl hexyl acrylates, add 1%wt titanic oxide nanos ultrasound Be uniformly dispersed, then add 25%wt containing hydrogen silicone oils, 30%wt acrylate, 15.8%wt polyurethane acrylic resins, 0.1%wt DAAs, 0.1%wt octanols mix, and form mixed slurry;High-speed stirred, ultrasonic disperse mixed slurry And repeat repeatedly, every kind of material in mixed slurry is uniformly dispersed, obtain photocuring 3D printing slurry;The light is consolidated Change in 3D printing slurry injection 3D printer 9, the wavelength for adjusting curing light source is 300nm, and every layer of print thickness is 2000 μm, is exposed It is 10s between light time.
Printing effect:Printing is smooth, nonchoking nozzle, but it is softness, mouldability that matrix 1, base lid 2,80 points of baffle plate, which is made, Typically.
Embodiment 2
6%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 18%wt 2-ethyl hexyl acrylates, 0.5%wt titanic oxide nanos is added and surpasses Sound is uniformly dispersed, then add 22%wt containing hydrogen silicone oils, 28%wt acrylate, 24.5%wt polyurethane acrylic resins, 0.5%wt DAAs, 0.5%wt octanols mix, and form mixed slurry;High-speed stirred, ultrasonic disperse mixed slurry And repeat repeatedly, every kind of material in mixed slurry is uniformly dispersed, obtain photocuring 3D printing slurry;The light is consolidated Change in 3D printing slurry injection 3D printer 9, the wavelength for adjusting curing light source is 365nm, and every layer of print thickness is 1000 μm, is exposed It is 8s between light time.
Printing effect:Printing is smooth, nonchoking nozzle, and obtained matrix 1, base lid 2, baffle plate 8 are more soft, bent, into Type is preferable.
Embodiment 3
4%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 15%wt 2-ethyl hexyl acrylates, 0.3%wt titanic oxide nanos is added and surpasses Sound is uniformly dispersed, then add 20%wt containing hydrogen silicone oils, 25%wt acrylate, 33.7%wt polyurethane acrylic resins, 1%wt DAAs, 1%wt octanols mix, and form mixed slurry;High-speed stirred, ultrasonic disperse mixed slurry are laid equal stress on Multiple operation is multiple, every kind of material in mixed slurry is uniformly dispersed, obtains photocuring 3D printing slurry;By the photocuring 3D Print in slurry injection 3D printer 9, the wavelength that adjusts curing light source be 365nm, and every layer of print thickness is 500 μm, during exposure Between be 5s.
Printing effect:Printing is smooth, nonchoking nozzle, and obtained matrix 1, base lid 2, the pliability of baffle plate 8 are moderate, bent, Good moldability.
Embodiment 4
2%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 12%wt 2-ethyl hexyl acrylates, 0.1%wt titanic oxide nanos is added and surpasses Sound is uniformly dispersed, then add 15%wt containing hydrogen silicone oils, 20%wt acrylate, 47.9%wt polyurethane acrylic resins, 1.5%wt DAAs, 1.5%wt octanols mix, and form mixed slurry;High-speed stirred, ultrasonic disperse mixed slurry And repeat repeatedly, every kind of material in mixed slurry is uniformly dispersed, obtain photocuring 3D printing slurry;The light is consolidated Change in 3D printing slurry injection 3D printer 9, the wavelength for adjusting curing light source is 365nm, and every layer of print thickness is 500 μm, is exposed It is 4s between light time.
Printing effect:Printing is smooth, nonchoking nozzle, and obtained matrix 1, base lid 2, the pliability of baffle plate 8 are moderate, bent, Good moldability.
Embodiment 5
1%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 10%wt 2-ethyl hexyl acrylates, add 0.01%wt titanic oxide nanos Ultrasonic disperse is uniform, then adds 10%wt containing hydrogen silicone oils, 15%wt acrylate, 59.99%wt polyurethane acroleic acid trees Fat, 2%wt DAAs, 2%wt octanols mix, and form mixed slurry;High-speed stirred, ultrasonic disperse mixed slurry are simultaneously Repeat repeatedly, every kind of material in mixed slurry is uniformly dispersed, obtain photocuring 3D printing slurry;By the photocuring In 3D printing slurry injection 3D printer 9, the wavelength for adjusting curing light source is 365nm, and every layer of print thickness is 100 μm, exposure Time is 2s.
Printing effect:Smoother, slight plug nozzle is printed, obtained matrix 1, base lid 2, the pliability of baffle plate 8 are general, bendable Folding, good moldability.
Obviously, above-described embodiment is used for the purpose of clearly demonstrating example, rather than the limitation to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.As long as made on the basis of the embodiment of the present invention The change scheme of common-sense, among protection scope of the present invention.

Claims (10)

1. a kind of 3D printing method of flexible battery, mainly comprises the following steps:(1) modeled using three-dimensional software, design is flexible The structure of cell matrix and base lid, the shape of collector and position, the shape of positive/negative slurry and position, baffle plate shape and Position;(2) according to three dimensional model printing flexible battery matrix and base lid, wherein, matrix and base lid indoor design have intermeshing Triangle toothed surface;(3) conductive material is printed to the toothed surface of matrix, interdigital collector is formed, wherein interdigital The root of type collector and the top crest line of the triangle are perpendicular, and the finger portion of the interdigital collector is located at described three Angular two waists are simultaneously parallel with the top crest line of the triangle;(4) positive/negative slurry is printed into positive/negative collector On, form the positive/negative of flexible battery;(5) baffle plate, the distance from top triangle waist of the baffle plate are printed between positive/negative The distance in face is more than or equal to the positive/negative collector and the positive/negative thickness sum;(6) collective and base lid are encapsulated in Together, its lance tooth shape area mutually coincide, and its internal voids forms the memory space of electrolyte.
2. the 3D printing method of flexible battery according to claim 1, it is characterised in that:The plane distribution of the baffle plate has Multiple holes.
3. the 3D printing method of flexible battery according to claim 1, it is characterised in that:The positive/negative active material In one of which material be printed upon in U-typed on negative or positive electrode collector, another material in T-shape be printed upon negative pole or On plus plate current-collecting body.
4. the 3D printing method of flexible battery according to claim 1, it is characterised in that:Between the central plane of triangle two Junction be the cambered surface tangent with two central planes, positive/negative is located in the central plane of triangle and avoids the cambered surface.
5. the 3D printing method of flexible battery according to claim 1, it is characterised in that:Between the central plane and central plane Angle is 30~75 °, and the ratio between radius of the length of the central plane and the cambered surface is 30:1~10:1.
6. the 3D printing method of flexible battery according to claim 5, it is characterised in that:Between the central plane and central plane Angle is 40~60 °, and the ratio between radius of the length of the central plane and the cambered surface is 20:1~15:1.
7. the 3D printing method of flexible battery according to claim 1, it is characterised in that:The base of the triangle is located at On the split of described matrix.
8. the 3D printing method of flexible battery according to claim 1, it is characterised in that described matrix, base lid, baffle plate Printing technology is:1~8%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 10~20%wt 2-ethyl hexyl acrylates, add 0.01~1%wt bis- Preparation of Nanocrystal TiO ultrasonic disperse is uniform, then add 10~25%wt containing hydrogen silicone oils, 15~30%wt acrylate, 15~ 60%wt polyurethane acrylic resins, 0.1~2%wt DAAs, 0.1~2%wt octanols mix, and form mixing slurry Material;High-speed stirred, ultrasonic disperse mixed slurry simultaneously repeat repeatedly, every kind of material in mixed slurry is uniformly dispersed, obtain To photocuring 3D printing slurry;The photocuring 3D printing slurry is injected in 3D printer, the wavelength for adjusting curing light source is 300~400nm, every layer of print thickness is 100~2000 μm, and the time for exposure is 2~10s.
9. the 3D printing method of flexible battery according to claim 8, it is characterised in that described matrix, base lid, baffle plate Printing technology is:2~6%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 12~18%wt 2-ethyl hexyl acrylates, add 0.1~0.5%wt Titanic oxide nano ultrasonic disperse is uniform, then adds 15~22%wt containing hydrogen silicone oils, 20~28%wt acrylate, 24 ~48%wt polyurethane acrylic resins, 0.5~1.5%wt DAAs, 0.5~1.5%wt octanols mix, and are formed Mixed slurry;High-speed stirred, ultrasonic disperse mixed slurry simultaneously repeat repeatedly, make every kind of material in mixed slurry scattered equal It is even, obtain photocuring 3D printing slurry;The photocuring 3D printing slurry is injected in 3D printer, adjusts the ripple of curing light source A length of 350~400nm, every layer of print thickness is 500~1000 μm, and the time for exposure is 4~8s.
10. the 3D printing method of flexible battery according to claim 9, it is characterised in that described matrix, base lid, baffle plate Printing technology be:4%wt NITRODIAZONIUM FLUOROBORATEs are dissolved in 15%wt 2-ethyl hexyl acrylates, 0.3%wt titanium dioxide is added and receives Ground rice ultrasonic disperse is uniform, then adds 20%wt containing hydrogen silicone oils, 25%wt acrylate, 33.7%wt polyurethane acroleic acids Resin, 1%wt DAAs, 1%wt octanols mix, and form mixed slurry;High-speed stirred, ultrasonic disperse mixed slurry And repeat repeatedly, every kind of material in mixed slurry is uniformly dispersed, obtain photocuring 3D printing slurry;The light is consolidated Change in 3D printing slurry injection 3D printer, the wavelength for adjusting curing light source is 365nm, and every layer of print thickness is 500 μm, exposure Time is 5s.
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CN108711638A (en) * 2018-05-10 2018-10-26 东莞华南设计创新院 A kind of 3D printing system and Method of printing of flexible battery
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