CN110061281A - A kind of hull cell and preparation method thereof - Google Patents
A kind of hull cell and preparation method thereof Download PDFInfo
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- CN110061281A CN110061281A CN201910368401.5A CN201910368401A CN110061281A CN 110061281 A CN110061281 A CN 110061281A CN 201910368401 A CN201910368401 A CN 201910368401A CN 110061281 A CN110061281 A CN 110061281A
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- electrode
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- diaphragm
- film
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- 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 present invention provides a kind of hull cells and preparation method thereof, hull cell prepared by the present invention can be made into various shape, various wearable devices can be flexibly suitable for, since there are many form that battery needs to adapt to, such as some through-holes (such as through-hole of watchband) may be needed, the present invention can meet this market demand well.Meanwhile thinner thickness may be implemented in hull cell prepared by the present invention, the mechanical flexibility and chemical property of hull cell are more excellent.The experimental results showed that thinner thickness, such as 0.2mm~0.9mm may be implemented in the hull cell that the present invention obtains.In certain embodiments of the present invention, the hull cell with a thickness of 0.56mm or 0.73mm.Hull cell is 3cm in crooked process radius, and the condition that bending angle is 15 °, after bending 3000 times, resistance is the 110%~120% of former resistance, and capacity retention ratio is more than 80%.
Description
Technical field
The present invention relates to thin film battery technology fields more particularly to a kind of hull cell and preparation method thereof.
Background technique
In the past few years, the technical need of internet, portable electronic product and wearable device has pushed film
The powerful growth momentum of battery.Wherein, wearable device is a main growth field, it is contemplated that will occupy more markets part
Volume.Currently, wearable device such as smartwatch and intelligent glasses still meet its appearance using traditional lithium ion or lithium battery
Amount requires.These batteries occupy sizable volume, accordingly, it is difficult to reduce the thickness of the functional component of these wearable devices.
To solve the above-mentioned problems, researcher develops hull cell.Current hull cell mainly uses 2 kinds of methods
Manufacture.One is vapor deposition methods；Another kind be with the method for similar manufacture soft-package battery, that is, only with seldom layer come
Obtain the thickness of battery request.Both methods perhaps higher cost or to can only achieve limited thickness such as soft-package battery normal
Rule can achieve 1~2mm, can not obtain thinner thickness.Meanwhile hull cell in the prior art is being bent more than 1000 times
Afterwards, the capacity retention ratio of the phenomenon that just will appear electrolyte leakage, hull cell significantly reduce.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is that providing a kind of hull cell and preparation method thereof, this hair
The hull cell of bright offer can flexibly be suitable for various wearable devices very much, and thinner thickness, electrochemistry may be implemented
It can be more excellent.
The present invention provides a kind of preparation methods of hull cell, comprising the following steps:
A) print electrode material at the position for leaving edge on electrode holder substrate, there are logical in the electrode pattern of printing
The pattern in hole, obtains electrode pad；It is die cut at the pattern of the through-hole of the electrode pad, is led to so that electrode pad generates
Hole, the aperture of the through-hole of the electrode pad are less than the aperture of the through-hole of electrode pattern；The electrode pad includes anode plate
And negative plates；
Diaphragm is die cut, so that diaphragm generates through-hole, the aperture of the through-hole of the diaphragm is less than the electrode pattern
Through-hole aperture；The aperture of the through-hole of the diaphragm is greater than the aperture of the through-hole of the electrode pad；
B) after the cross cutting, the negative plates and anode plate are cut respectively, so that negative plates and anode
The size of pole plate is identical, and when negative plates and anode plate are overlapped, the position of the through-hole of negative plates and anode plate
The position of through-hole is identical；
Diaphragm after cross cutting is cut, so that the edge of diaphragm is greater than the edge of electrode pattern and is less than electrode pad
Edge；
C) after the cutting, the diaphragm is placed between the anode plate and the negative plates, the anode pole
On plate containing electrode pattern one facing towards diaphragm, in the negative plates containing electrode pattern one facing towards diaphragm, filling
Electrolyte, encapsulation obtain hull cell.
Preferably, the electrode holder substrate includes:
First base material layer；
The aluminium foil layer being compounded on the first base material layer；
The second substrate layer being compounded on the aluminium foil layer；
Print electrode material on the second substrate layer of the electrode holder substrate.
Preferably, the first base material layer, aluminium foil layer and the second substrate layer pass through adhesive bond.
Preferably, the first base material layer choosing from polyethylene terephthalate film, poly (ethylene naphthalate) film,
One of polypropylene screen and polystyrene film.
Preferably, second substrate layer be selected from polyethylene terephthalate film, poly (ethylene naphthalate) film,
One of polypropylene screen, polystyrene film, polyethylene film and ethylene-vinyl acetate copolymer film.
Preferably, second substrate layer is polyethylene terephthalate film, poly (ethylene naphthalate) film, gathers
One of propylene film and polystyrene film do not have in the region for the pattern that do not print electrode on the anode plate and negative plates
There is the region for the pattern that prints electrode to bond by binder to encapsulate.
Preferably, second substrate layer is one in polypropylene screen, polyethylene film and ethylene-vinyl acetate copolymer film
Kind, the region for the pattern that do not print electrode on the region for the pattern that do not print electrode on the anode plate and negative plates passes through
Heat-sealing encapsulation.
Preferably, when the electrode material of printing is positive electrode, the electrode pattern of printing is positive pole figure case, obtained electrode
Pole plate is anode plate；
When the electrode material of printing is negative electrode material, the electrode pattern of printing is negative pole figure case, and obtained electrode pad is
Negative plates.
The present invention also provides a kind of hull cells of preparation method preparation described above.
The present invention provides a kind of preparation method of hull cell, hull cell prepared by the present invention can be made into various
Shape can flexibly be suitable for various wearable devices, since there are many form that battery needs to adapt to, such as may need
Some through-holes (such as through-hole of watchband), the present invention can meet this market demand well.Meanwhile it is prepared by the present invention thin
Thinner thickness may be implemented in film battery, and the mechanical flexibility and chemical property of hull cell are more excellent.
The experimental results showed that thinner thickness, such as 0.2mm~0.9mm may be implemented in the hull cell that the present invention obtains.
In certain embodiments of the present invention, the hull cell with a thickness of 0.56mm or 0.73mm.Hull cell is in crooked process radius
For 3cm, the condition that bending angle is 15 °, after bending 3000 times, resistance is the 110%~120% of former resistance, capacity retention ratio
More than 80%.
Detailed description of the invention
Fig. 1 is the structure chart of an electrode pad and diaphragm in embodiment 1；
Fig. 2 is the structure chart of an electrode pad and diaphragm in embodiment 2.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of preparation methods of hull cell, comprising the following steps:
A) print electrode material at the position for leaving edge on electrode holder substrate, there are logical in the electrode pattern of printing
The pattern in hole, obtains electrode pad；It is die cut at the pattern of the through-hole of the electrode pad, is led to so that electrode pad generates
Hole, the aperture of the through-hole of the electrode pad are less than the aperture of the through-hole of electrode pattern；The electrode pad includes anode plate
And negative plates；
Diaphragm is die cut, so that diaphragm generates through-hole, the aperture of the through-hole of the diaphragm is less than the electrode pattern
Through-hole aperture；The aperture of the through-hole of the diaphragm is greater than the aperture of the through-hole of the electrode pad；
B) after the cross cutting, the negative plates and anode plate are cut respectively, so that negative plates and anode
The size of pole plate is identical, and when negative plates and anode plate are overlapped, the position of the through-hole of negative plates and anode plate
The position of through-hole is identical；
Diaphragm after cross cutting is cut, so that the edge of diaphragm is greater than the edge of electrode pattern and is less than electrode pad
Edge；
C) after the cutting, the diaphragm is placed between the anode plate and the negative plates, the anode pole
On plate containing electrode pattern one facing towards diaphragm, in the negative plates containing electrode pattern one facing towards diaphragm, filling
Electrolyte, encapsulation obtain hull cell.
Print electrode material at the position that the present invention leaves edge on electrode holder substrate, stays in the electrode pattern of printing
There is the pattern of through-hole, obtains electrode pad；It is die cut at the pattern of the through-hole of the electrode pad, so that electrode pad produces
Raw through-hole, the aperture of the through-hole of the electrode pad are less than the aperture of the through-hole of electrode pattern.In an embodiment of the present invention, have
Body are as follows:
Positive electrode is printed at the position for leaving edge on positive carrier substrate, there are through-holes in the positive pattern of printing
Pattern, obtain anode plate；It is die cut at the pattern of the through-hole of the anode plate, is led to so that anode plate generates
Hole, the aperture of the through-hole of the anode plate are less than the aperture of the through-hole of positive pattern；
Negative electrode material is printed at the position for leaving edge on cathode carrier substrate, there are through-holes in the cathode pattern of printing
Pattern, obtain negative plates；It is die cut at the pattern of the through-hole of the negative plates, is led to so that negative plates generate
Hole, the aperture of the through-hole of the negative plates are less than the aperture of the through-hole of cathode pattern.
In an embodiment of the present invention, the electrode holder substrate includes:
First base material layer；
The aluminium foil layer being compounded on the first base material layer；
The second substrate layer being compounded on the aluminium foil layer；
Print electrode material on the second substrate layer of the electrode holder substrate.
In an embodiment of the present invention, the first base material layer, aluminium foil layer and the second substrate layer pass through adhesive bond.This
Invention has no special limitation to the type of the binder, and the type using binder well known to those skilled in the art is
Can, in certain embodiments of the present invention, the binder is selected from polyacrylic resin binder, epoxy adhesive, gathers
One of urethane binder and acrylic type binder.
In an embodiment of the present invention, the first base material layer choosing is from polyethylene terephthalate film, poly- naphthalene diformazan
One of sour glycol ester film, polypropylene screen and polystyrene film.
In an embodiment of the present invention, the aluminium foil layer is aluminium foil.
In an embodiment of the present invention, second substrate layer is selected from polyethylene terephthalate film, poly- naphthalene diformazan
One of sour glycol ester film, polypropylene screen, polystyrene film, polyethylene film and ethylene-vinyl acetate copolymer film.
In an embodiment of the present invention, when second substrate layer is polyethylene terephthalate film, poly- naphthalene diformazan
When one of sour glycol ester film, polypropylene screen and polystyrene film, do not print electrode pattern on the anode plate
Do not print electrode on region and negative plates pattern region can by binder bond encapsulate.In certain realities of the invention
It applies in example, the binder is pressure sensitive adhesive.
In an embodiment of the present invention, when second substrate layer is polypropylene screen, polyethylene film and ethene-vinyl acetate
Do not print electrode when one of co-polymer membrane, on the anode plate pattern region and negative plates on without printing electricity
The region of pole figure case can be encapsulated by heat-sealing.The present invention has no special limitation to the temperature of the heat-sealing encapsulation, using this
The temperature of heat-sealing encapsulation known to the technical staff of field.
The present invention has no special limitation, Ke Yigen to the thickness of the first base material layer, aluminium foil layer and the second substrate layer
The thickness of first base material layer, aluminium foil layer and the second substrate layer is selected according to actual demand.In certain embodiments of the present invention,
The first base material layer with a thickness of 0.03~0.05mm.In certain embodiments, the first base material layer with a thickness of
0.03mm or 0.05mm.In certain embodiments of the present invention, second substrate layer with a thickness of 0.03~0.07mm.At certain
In a little embodiments, second substrate layer with a thickness of 0.03mm or 0.07mm.In certain embodiments of the present invention, the aluminium
Layers of foil with a thickness of 0.02~0.06mm.In certain embodiments, the aluminium foil layer with a thickness of 0.02mm, 0.05mm or
0.06mm。
In certain embodiments of the present invention, positive electrode is printed at the position for leaving edge on positive carrier substrate,
There are the pattern of through-hole in the positive pattern of printing, anode plate is obtained, specifically: first edge is left on positive carrier substrate
Position at print positive current collector material, there are the patterns of through-hole in the plus plate current-collecting body pattern of printing, then it is described just
Positive electrode is printed in the current collector material of pole, obtains anode plate.
In certain embodiments of the present invention, negative electrode material is printed at the position for leaving edge on cathode carrier substrate,
There are the pattern of through-hole in the cathode pattern of printing, negative plates are obtained, specifically: first edge is left on cathode carrier substrate
Position at print negative current collector material, there are the patterns of through-hole in the negative current collector pattern of printing, then described negative
Negative electrode material is printed in the current collector material of pole, obtains negative plates.
The size of the plus plate current-collecting body pattern is identical as the positive size of pattern, the plus plate current-collecting body pattern
The aperture of through-hole is identical as the positive aperture of through-hole of pattern.The size of the negative current collector pattern and the cathode pattern
Size is identical, and the aperture of the through-hole of the negative current collector pattern is identical as the aperture of the through-hole of cathode pattern.
The present invention has no spy to the electrode current collecting body material (including positive current collector material and negative current collector material)
Different limitation, using electrode current collecting body material well known to those skilled in the art.In certain embodiments of the present invention, institute
Stating positive current collector material includes carbon dust.In certain embodiments of the present invention, the negative current collector material includes carbon dust.
The present invention has no special limitation to the electrode material (including positive electrode and negative electrode material), using this field
Electrode material known to technical staff.In certain embodiments of the present invention, the positive electrode includes manganese dioxide；Institute
Stating negative electrode material includes graphite, carbon nanohorn or zinc.
Thickness of the present invention to the electrode current collecting body pattern (including plus plate current-collecting body pattern and negative current collector pattern)
Special limitation is had no, can be selected according to actual needs.In certain embodiments of the present invention, the plus plate current-collecting body
Pattern with a thickness of 0.08mm, the negative current collector pattern with a thickness of 0.08mm.The present invention to the electrode pattern (including
Positive pattern and cathode pattern) thickness have no special limitation, can be selected according to actual needs.In certain of the invention
In a little embodiments, the anode pattern with a thickness of 0.08mm, the cathode pattern with a thickness of 0.08mm.
In an embodiment of the present invention, the aperture of the through-hole of the aperture of the through-hole of the anode plate and the negative plates
It is identical；The aperture of the through-hole of the anode pattern is identical as the aperture of through-hole of the cathode pattern.In the embodiment of the present invention
In, the through-hole of the anode pattern, which is circle, to be rectangle and rectangular.
In an embodiment of the present invention, the printing is silk-screen printing, this silk-screen printing suitable for roll-to-roll production
Technology makes it possible that low cost produces hull cell, because it can be manufactured at a high speed in a continuous process with assembled battery not
Same layer.
It in certain embodiments of the present invention, further include baking after the electrode current collecting body material is completed for printing.The baking
Roasting temperature is 60~120 DEG C, and the time of the baking is 8~12min.The electrode current collecting body material is plus plate current-collecting body material
Material or negative current collector material.
It in certain embodiments of the present invention, further include baking after the electrode material is completed for printing.The temperature of the baking
Degree is 60~120 DEG C, and the time of the baking is 8~12min.In certain embodiments of the present invention, it after the printing, also wraps
Include roll-in.The present invention has no special limitation to the method for the roll-in, using rolling methods well known to those skilled in the art
?.The electrode material is positive electrode or negative electrode material.
The present invention is die cut diaphragm, so that diaphragm generates through-hole, the aperture of the through-hole of the diaphragm is less than the electricity
The aperture of the through-hole of pole figure case；The aperture of the through-hole of the diaphragm is greater than the aperture of the through-hole of the electrode pad.
In an embodiment of the present invention, the aperture of the through-hole of the diaphragm is less than the aperture of the through-hole of the positive pattern,
The aperture of the through-hole of the diaphragm is less than the aperture of the through-hole of the cathode pattern；And the aperture of the through-hole of the diaphragm is greater than institute
The aperture of the through-hole of anode plate is stated, the aperture of the through-hole of the diaphragm is greater than the aperture of the through-hole of the negative plates.
In an embodiment of the present invention, the material of the diaphragm is selected from one of non-woven fabrics fiber, polymer and ceramics.
The present invention has no special limitation to the polymer, is using the polymer well known to those skilled in the art suitable for diaphragm
It can.In certain embodiments of the present invention, the polymer can be Kynoar, Kynoar-hexafluoropropene or poly-
Vinylidene-trifluoro-ethylene.
The present invention has no special limitation to the thickness of the diaphragm, can be selected according to actual needs.In the present invention
Some embodiments in, the diaphragm with a thickness of 0.05mm.
After the completion of cross cutting, the negative plates and anode plate are cut respectively, so that negative plates and positive pole
The size of plate is identical, and when negative plates and anode plate overlapping, the position of the through-hole of negative plates and leading to for anode plate
The position in hole is identical.
In an embodiment of the present invention, the anode plate after the cutting and the negative plates after cutting can be various shapes
Shape, the present invention have no special limitation to this, can be selected according to actual needs.In certain embodiments of the present invention,
The negative plates after anode plate and cutting after the cutting are rectangle, and the size of rectangle is 3.5cm × 5.5cm.
Diaphragm after cross cutting is cut, so that the edge of diaphragm is greater than the edge of electrode pattern and is less than electrode pad
Edge.In an embodiment of the present invention, specifically: the diaphragm after cross cutting is cut, so that the edge of diaphragm is greater than just
The edge of pole figure case and the edge for being less than anode plate, the edge of diaphragm are greater than the edge of cathode pattern and are less than negative plates
Edge.
In an embodiment of the present invention, the diaphragm after the cutting can be various shape, and it is special that the present invention has no this
Limitation, can be selected according to actual needs.In certain embodiments of the present invention, the diaphragm after the cutting is square
Shape, the size of the rectangle are 3cm × 4cm.
After the completion of cutting, the diaphragm is placed between the anode plate and the negative plates, the anode plate
Upper one containing positive pattern facing towards diaphragm, in the negative plates containing cathode pattern one facing towards diaphragm, filling electricity
Liquid is solved, encapsulation obtains hull cell.
The present invention has no special limitation to the type of the electrolyte, can be applied using well known to those skilled in the art
In the electrolyte of hull cell.In certain embodiments of the present invention, the electrolyte include 26wt% ammonium chloride,
The water of the zinc chloride of 8.8wt%, the zinc inhibitor of 0.5wt% and 64.7wt%；Or the electrolyte includes the chlorination of 26wt%
The water of ammonium, the zinc chloride of 8.8wt% and 65.2wt%.
The present invention has no special limitation to the source of above-mentioned used raw material components, can be general commercially available.
Hull cell prepared by the present invention can be made into various shape, can flexibly be suitable for various wearable set
It is standby, it since battery needs the form that adapts to very much, such as may need some through-holes (such as through-hole of watchband), the present invention can be with
Meet this market demand well.Meanwhile thinner thickness may be implemented in hull cell prepared by the present invention, hull cell
Mechanical flexibility and chemical property are more excellent.
The present invention also provides a kind of hull cells of preparation method preparation described above.Hull cell of the invention can
Think various shape, can flexibly be suitable for various wearable devices, since there are many form that battery needs to adapt to, such as
Some through-holes (such as through-hole of watchband) may be needed, the present invention can meet this market demand well.Meanwhile the present invention
Thinner thickness may be implemented in the hull cell of preparation, and the mechanical flexibility and chemical property of hull cell are more excellent.
The experimental results showed that thinner thickness, such as 0.2mm~0.9mm may be implemented in the hull cell that the present invention obtains.
In certain embodiments of the present invention, the hull cell with a thickness of 0.56mm or 0.73mm.Hull cell is in crooked process radius
For 3cm, under conditions of bending angle is 15 °, after bending 3000 times, resistance is the 110%~120% of former resistance, and capacity is kept
Rate is more than 80%.
In certain circumstances, it may be necessary to higher operating potential, in certain circumstances, it may be necessary to higher capacity,
Which results in need to be connected in series or in parallel hull cell.
In certain embodiments of the present invention, the series design of two hull cells is given.Use common collector
The cathode of the anode and another hull cell of one hull cell is maintained at identical current potential, then, places each film
The hull cell to electrode, after being connected of battery.Specific structure includes: the first film battery, is compounded in described first
Current collector layers on hull cell, the second hull cell being compounded in the current collector layers；The first film battery is just
Pole pole plate and the current collector layers are compound, and the negative plates and the current collector layers of second hull cell are compound.
The present invention has no special limitation to the number of concatenated hull cell, can select thin-film electro according to actual needs
The number in pond.
In certain embodiments of the present invention, the Parallel Design of two hull cells is given.Specific structure includes: the
One hull cell, the current collector layers being compounded on the first film battery, the second film being compounded in the current collector layers
Battery；The anode plate of the first film battery and the current collector layers are compound, the anode plate of second hull cell
It is compound with the current collector layers；
Or
Specific structure includes: the first film battery, and the current collector layers being compounded on the first film battery are compounded in
The second hull cell in the current collector layers；The negative plates and the current collector layers of the first film battery are compound, institute
Negative plates and the current collector layers for stating the second hull cell are compound.
The present invention has no special limitation to the number of hull cell in parallel, can select thin-film electro according to actual needs
The number in pond.
In order to further illustrate the present invention, with reference to embodiments to a kind of hull cell provided by the invention and its preparation
Method is described in detail, but cannot be understood as limiting the scope of the present invention.
Raw material components used in following embodiment are general commercially available.
Embodiment 1
Positive carrier substrate includes:
With a thickness of the aluminium foil layer of 0.02mm；
The polyethylene terephthalate film that a layer thickness is 0.03mm is respectively bonded in the front and back sides of the aluminium foil layer；
The binder used that bonds is polyacrylic resin binder.
Cathode carrier substrate includes:
With a thickness of the aluminium foil layer of 0.05mm；
The polyethylene terephthalate film that a layer thickness is 0.03mm is respectively bonded in the front and back sides of the aluminium foil layer；
The binder used that bonds is polyacrylic resin binder.
Silk-screen printing positive current collector material carbon dust at the position for leaving edge on the positive carrier substrate, printing are thick
Spending is 0.08mm, there are the pattern for the circular through hole that diameter is 2cm in the plus plate current-collecting body pattern of printing, is toasted at 120 DEG C
After 8min, manganese dioxide is printed in the positive current collector material, print thickness 0.08mm is toasted at 120 DEG C later
Afterwards, roll-in obtains anode plate；It is die cut at the pattern of the through-hole of the anode plate, so that anode plate generates diameter
For the circular through hole of 1cm；
Silk-screen printing negative current collector material carbon dust at the position for leaving edge on the cathode carrier substrate, printing are thick
Spending is 0.08mm, there are the pattern for the circular through hole that diameter is 2cm in the negative current collector pattern of printing, is toasted at 120 DEG C
After 8min, zinc powder is printed on the negative current collector material, print thickness 0.08mm, after being toasted at 120 DEG C later, roller
Pressure obtains negative plates；It is die cut at the pattern of the through-hole of the negative plates, so that it is 1cm that negative plates, which generate diameter,
Circular through hole；
Diaphragm is non-woven fabrics fiber diaphragm, with a thickness of 0.05mm.The diaphragm is die cut, so that diaphragm generates diameter
For the circular through hole of 1.5cm.
After the completion of cross cutting, the negative plates and anode plate are cut respectively, so that negative plates and positive pole
Plate is the identical rectangle of size (3.5cm × 5.5cm), and when negative plates and anode plate overlapping, the through-hole of negative plates
Position it is identical as the position of the through-hole of anode plate.Diaphragm after cross cutting is cut, rectangle diaphragm, the ruler of diaphragm are obtained
Very little is 3cm × 4cm.
After the completion of cutting, the diaphragm is placed between the anode plate and the negative plates, the anode plate
Upper one containing positive pattern facing towards diaphragm, in the negative plates containing cathode pattern one facing towards diaphragm, filling electricity
Liquid is solved, the electrolyte includes the water of the ammonium chloride of 26wt%, the zinc chloride of 8.8wt% and 65.2wt%, passes through pressure-sensitive adhesive
Knot encapsulation, obtains the hull cell with a thickness of 0.56mm.
One of electrode pad (anode plate or negative plates) is as shown in Figure 1 with the structure of diaphragm.Fig. 1 is to implement
The structure chart of an electrode pad and diaphragm in example 1.
It is detected it is found that capacity of the obtained hull cell before bending is 13mAh, internal resistance is 30 Ω, by the film
Battery is 3cm in crooked process radius, and under conditions of bending angle is 15 °, after bending 3000 times, capacity becomes 11mAh, and capacity is kept
Rate is 84.6%, and internal resistance becomes 34 Ω, and internal resistance is the 113% of former resistance.
Embodiment 2
Positive carrier substrate includes:
With a thickness of the poly (ethylene naphthalate) film of 0.05mm；
The aluminium foil layer with a thickness of 0.06mm being bonded on the poly (ethylene naphthalate) film；
The polypropylene screen with a thickness of 0.07mm being bonded on the aluminium foil layer；
Positive electrode is printed on the polypropylene screen of the positive carrier substrate；
The binder used that bonds is epoxy adhesive.
Cathode carrier substrate includes:
With a thickness of the poly (ethylene naphthalate) film of 0.05mm；
The aluminium foil layer with a thickness of 0.06mm being bonded on the poly (ethylene naphthalate) film；
The polypropylene screen with a thickness of 0.07mm being bonded on the aluminium foil layer；
Negative electrode material is printed on the polypropylene screen of the cathode carrier substrate；
The binder used that bonds is epoxy adhesive.
Silk-screen printing positive current collector material carbon dust at the position for leaving edge on the positive carrier substrate, printing are thick
Spending is 0.08mm, there are the pattern for the circular through hole that diameter is 2cm in the plus plate current-collecting body pattern of printing, is toasted at 120 DEG C
After 8min, manganese dioxide is printed in the positive current collector material, print thickness 0.08mm is toasted at 120 DEG C later
Afterwards, roll-in obtains anode plate；It is die cut at the pattern of the through-hole of the anode plate, so that anode plate generates diameter
For the circular through hole of 1cm；
Silk-screen printing negative current collector material carbon dust at the position for leaving edge on the cathode carrier substrate, printing are thick
Spending is 0.08mm, there are the pattern for the circular through hole that diameter is 2cm in the negative current collector pattern of printing, is toasted at 120 DEG C
After 8min, zinc powder is printed on the negative current collector material, print thickness 0.08mm, after being toasted at 120 DEG C later, roller
Pressure obtains negative plates；It is die cut at the pattern of the through-hole of the negative plates, so that it is 1cm that negative plates, which generate diameter,
Circular through hole；
Diaphragm is non-woven fabrics fiber diaphragm, with a thickness of 0.05mm.The diaphragm is die cut, so that diaphragm generates diameter
For the circular through hole of 1.5cm.
After the completion of cross cutting, the negative plates and anode plate are cut respectively, so that negative plates and positive pole
Plate is the identical rectangle of size (3.5cm × 5.5cm), and when negative plates and anode plate overlapping, the through-hole of negative plates
Position it is identical as the position of the through-hole of anode plate.Diaphragm after cross cutting is cut, rectangle diaphragm, the ruler of diaphragm are obtained
Very little is 3cm × 4cm.
After the completion of cutting, the diaphragm is placed between the anode plate and the negative plates, the anode plate
Upper one containing positive pattern facing towards diaphragm, in the negative plates containing cathode pattern one facing towards diaphragm, filling electricity
Liquid is solved, the electrolyte includes the zinc inhibitor and 64.7wt% of the ammonium chloride of 26wt%, the zinc chloride of 8.8wt%, 0.5wt%
Water, by heat-sealing encapsulate, obtain the hull cell with a thickness of 0.73mm.
One of electrode pad (anode plate or negative plates) is as shown in Figure 2 with the structure of diaphragm.Fig. 2 is to implement
The structure chart of an electrode pad and diaphragm in example 2.
It is detected it is found that capacity of the obtained hull cell before bending is 12.8mAh, internal resistance is 32 Ω, will be described thin
Film battery is 3cm in crooked process radius, and under conditions of bending angle is 15 °, after bending 3000 times, capacity becomes 11.1mAh, capacity
Conservation rate is 86.7%, and internal resistance becomes 35 Ω, and internal resistance is the 109% of former resistance.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of preparation method of hull cell, comprising the following steps:
A) print electrode material at the position for leaving edge on electrode holder substrate, there are through-holes in the electrode pattern of printing
Pattern obtains electrode pad；It is die cut at the pattern of the through-hole of the electrode pad, so that electrode pad generates through-hole,
The aperture of the through-hole of the electrode pad is less than the aperture of the through-hole of electrode pattern；The electrode pad includes anode plate and bears
Pole pole plate；
Diaphragm is die cut, so that diaphragm generates through-hole, the aperture of the through-hole of the diaphragm is less than the logical of the electrode pattern
The aperture in hole；The aperture of the through-hole of the diaphragm is greater than the aperture of the through-hole of the electrode pad；
B) after the cross cutting, the negative plates and anode plate are cut respectively, so that negative plates and anode plate
Size it is identical, and when negative plates and anode plate are overlapped, the position of the through-hole of negative plates and the through-hole of anode plate
Position it is identical；
Diaphragm after cross cutting is cut, so that the edge of diaphragm is greater than the edge of electrode pattern and is less than the side of electrode pad
Edge；
C) after the cutting, the diaphragm is placed between the anode plate and the negative plates, on the anode plate
Containing electrode pattern one facing towards diaphragm, in the negative plates containing electrode pattern one facing towards diaphragm, filling electrolysis
Liquid, encapsulation obtain hull cell.
2. preparation method according to claim 1, which is characterized in that the electrode holder substrate includes:
First base material layer；
The aluminium foil layer being compounded on the first base material layer；
The second substrate layer being compounded on the aluminium foil layer；
Print electrode material on the second substrate layer of the electrode holder substrate.
3. preparation method according to claim 2, which is characterized in that the first base material layer, aluminium foil layer and the second substrate
Layer passes through adhesive bond.
4. preparation method according to claim 2, which is characterized in that the first base material layer choosing is from poly terephthalic acid second
One of diol ester film, poly (ethylene naphthalate) film, polypropylene screen and polystyrene film.
5. preparation method according to claim 2, which is characterized in that second substrate layer is selected from poly terephthalic acid second
Diol ester film, poly (ethylene naphthalate) film, polypropylene screen, polystyrene film, polyethylene film and ethene-vinyl acetate copolymerization
One of object film.
6. preparation method according to claim 5, which is characterized in that second substrate layer is poly terephthalic acid second two
One of alcohol ester film, poly (ethylene naphthalate) film, polypropylene screen and polystyrene film do not print on the anode plate
Do not print electrode on the region of brush electrode pattern and negative plates pattern region pass through binder bonding encapsulation.
7. preparation method according to claim 5, which is characterized in that second substrate layer is polypropylene screen, polyethylene
One of film and ethylene-vinyl acetate copolymer film, the region for the pattern that do not print electrode on the anode plate and cathode
Do not print electrode on pole plate pattern region by heat-sealing encapsulation.
8. preparation method according to claim 1, which is characterized in that when the electrode material of printing is positive electrode, printing
Electrode pattern be positive pole figure case, obtained electrode pad is anode plate；
When the electrode material of printing is negative electrode material, the electrode pattern of printing is negative pole figure case, and obtained electrode pad is cathode
Pole plate.
9. the hull cell of the preparation of preparation method described in claim 1~8 any one.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111896879A (en) * | 2020-07-31 | 2020-11-06 | 北京石墨烯研究院 | Rapid detection method for bending life of flexible lithium ion battery |
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