CN109585897A - Flexible battery - Google Patents
Flexible battery Download PDFInfo
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- CN109585897A CN109585897A CN201710908079.1A CN201710908079A CN109585897A CN 109585897 A CN109585897 A CN 109585897A CN 201710908079 A CN201710908079 A CN 201710908079A CN 109585897 A CN109585897 A CN 109585897A
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- 239000003292 glue Substances 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 14
- 239000006183 anode active material Substances 0.000 claims description 19
- -1 polyethylene terephthalate Polymers 0.000 claims description 13
- 229920002635 polyurethane Polymers 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 9
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000741 silica gel Substances 0.000 claims description 8
- 229910002027 silica gel Inorganic materials 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229920002223 polystyrene Polymers 0.000 claims 1
- 229920000915 polyvinyl chloride Polymers 0.000 claims 1
- 239000007774 positive electrode material Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 20
- 239000011149 active material Substances 0.000 description 9
- 238000010292 electrical insulation Methods 0.000 description 6
- 229920001296 polysiloxane Polymers 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
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- 239000007773 negative electrode material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/136—Flexibility or foldability
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/545—Terminals formed by the casing of the cells
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention provides a kind of flexible battery comprising has: a positive pole current collections layer, has one first outer surface and one first inner surface；One cathode current-collecting layer has one second outer surface and one second inner surface；One glue frame is located between first inner surface and second inner surface, to form a fenced region；And an electro-chemical systems layer, it is set in the fenced region and is adjacent to the side surface of the glue frame；Wherein, a stress armature is provided at least one of first outer surface and second outer surface, and the thickness ratio of the stress armature and the positive pole current collections layer or the cathode current-collecting layer is between 0.25 to 6, it is provided with stress armature on at least outer surface of a current collection layer, to promote the structural stress of current collection layer, make flexible battery in the deformation that after bending repeatedly, current collection layer is not likely to produce gauffer or can not restore.
Description
Technical field
The present invention relates to a kind of flexible batteries, particularly relate to a kind of flexible battery, on current collection layer there is stress to reinforce
Material.
Background technique
In recent years, with the development of science and technology, various electronic equipments, such as: Portable mobile phone, wrist-watch, camera, photography
The pattern of machine, tablet computer, laptop etc. is more and more, and many electronic equipments have unique shape, such as bent
Face mobile phone, wearable smartwatch, Intelligent bracelet etc..These electronic equipments require to use power supply, have unique shape
Electronic equipment be frequently necessary to battery flexible, and existing battery is usually excessively firm, cannot be with the shape of these electronic equipments
Shape is consistent, and even battery is installed into electronic equipment reluctantly, it is also possible to and the encapsulation that will cause electronic equipment is undesirable, because
This, may be provided at nonplanar flexible musical form battery, project brings one of resolution policy thus.
However, during battery passes through alternating bending, it is necessary to consider that current collection layer is issuable after by stress
Problem.Currently, current collection layer is often inclined to the more frivolous of design, to make battery more meet the characteristic of deflection to increase bendable
Folding degree, however after the bending of current collection layer stress, it is easy that acute angle can be generated because of the extruding by pole layer.Also, current collection layer is logical
It being often used metal material, after metal material is by being more than the external force of elastic range, it may occur that crystal slides (slip), or
It is to lead to the problem of crystal difference row (dislocations), so that the deformation that can not restore occurs for current collection layer surface.
And when above-mentioned or other problems occur, so that current collection layer after deformation occurs, often will cause current collection layer and active material
Bed of material removing, so that the capacitance of battery declines, shorter battery life.
Summary of the invention
In view of the above problems, the purpose of the present invention is to provide a kind of flexible batteries, are not hindering battery bending ability
Under the premise of, stress armature, which is equipped with, in current collection layer avoids current collection layer from occurring above-mentioned to promote the structural stress of current collection layer
Problem.
In order to achieve the above objectives, the present invention proposes a kind of flexible battery, includes: positive pole current collections layer, has the first appearance
Face and the first inner surface；Cathode current-collecting layer has the second outer surface and the second inner surface；Glue frame, be located in the first inner surface with
Between second inner surface, to form fenced region；Electro-chemical systems layer is set in fenced region and is adjacent to the side table of the glue frame
Face；And stress armature, it is set on the first outer surface and/or the second outer surface, and the stress armature and the anode collect
Electric layer or the thickness ratio of the cathode current-collecting layer are between 0.25 to 6.
Wherein, electro-chemical systems layer includes anode active material layer, anode active material layer and electrical insulation layer, anode
Second inner surface of the first abutment of active material layer and positive pole current collections layer, anode active material layer and cathode current-collecting layer
Adjacent, electrical insulation layer is located between anode active material layer and anode active material layer.
Wherein, the thickness of the positive pole current collections layer is between 5 μm to 40 μm.
Wherein, the thickness of the cathode current-collecting layer is between 2 μm to 20 μm.
Wherein, the thickness of the stress armature is between 10 μm to 30 μm.
Wherein, which is selected from polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyethylene
(PE), polypropylene (PC), polystyrene (PS), polyimides (polyimide), nylon (nylon), poly terephthalic acid second two
Ester (polyethylene terephthalate), Polyurethane (polyurethane), acrylic (acrylic), epoxy resin
(epoxy), silica gel (silicone) and combinations of the above.
Wherein, the stress armature and first outer surface, the stress armature and second outer surface at least
It further include an adhesion layer between one of them.
Wherein, the thickness of the adhesion layer is not more than 5 μm.
Wherein, which is selected from Polyurethane (polyurethane), acrylic (Acrylic), epoxy resin
(epoxy), silica gel (silicone) and combinations of the above.
Wherein, the young's modulus of the stress armature is close with the positive pole current collections layer and the cathode current-collecting layer.
Wherein, which is closed.
It connects, stress armature of the invention has certain structural strength and ductility, and stress armature should select poplar
Material similar in family name's modulus and current collection layer, and the thickness of stress armature is less than current collection layer, by positive pole current collections layer and cathode
Stress armature is arranged on current collection layer makes current collection layer have certain structural stress, curved to promote the surface strength of current collection layer
The deformation that can not restore is not likely to produce when folding.
Detailed description of the invention
Figure 1A-Fig. 1 C is a kind of structural schematic diagram of embodiment of the invention.
Fig. 2 is the structural schematic diagram of another embodiment of the invention.
Description of symbols
10 flexible batteries
12 positive pole current collections layers
120 first inner surfaces
122 first outer surfaces
14 cathode current-collecting layers
140 second inner surfaces
142 second outer surfaces
16 glue frames
18 stress armatures
20 electro-chemical systems layers
202 anode active material layers
204 anode active material layers
206 electrical insulation layers
22 adhesion layers.
Specific embodiment
It is beneath to add explanation in detail by specific embodiment, when be easier to understand the purpose of the present invention, technology contents, feature and
The effect of it is reached.
To make to be easier to understand the contents of the present invention, should first it illustrate, term as used in this specification should not limit
In general meaning or dictionary connotation, but the principle that inventor should be allowed to carry out best interpretations and term is suitably defined
On the basis of, it is explained based on the connotation and concept being consistent with technical aspect of the invention.Based on above-mentioned, below first to explanation
Vocabulary used in book explains:
1. one or more any and all combinations that "and/or" and " at least one " include associated listed items.
" 2. current collection layer " refer to collection and discharge electronics region, usually consist of metal, especially by not with active matter
The metal that matter reacts is constituted.The current collection layer refers to positive pole current collections layer and/or cathode current-collecting layer in the present invention.
The region that " 3. electro-chemical systems layer " refers to electrochemical reaction.In the present invention, current collection layer and not included in electrification
System layer is learned, electron exchange betides on the interface of electro-chemical systems layer and current collection layer.
4. being electrically insulated in " electrical insulation layer " refers to isolation electronics circulation, that is to say, that electrical insulation layer refers to can
Isolation electronics circulation but do not influence ion circulation region, be usually located between positive electrode and negative electrode, in the present invention to every
Electronics between exhausted anode active material layer and anode active material layer circulates, and its be selected from liquid, solid-state, colloidal state and/or on
The combination stated.
5. " fenced region " refers to the region with external environment isolation.In the present invention, fenced region be by current collection layer with
Glue frame is fenced to be formed, and electro-chemical systems layer is equipped in fenced region, and in other words, electro-chemical systems layer of the invention passes through collection
Electric layer and the fenced of glue frame are isolated from the outside world.
6. position, size, range of each component shown in the drawings of the invention etc. are not offered as actually sometimes
Position, size, range etc..The invention is not limited to contents disclosed in attached drawing.
The purpose of the present invention is to provide a kind of flexible batteries, and stress armature is equipped on current collection layer, and stress is reinforced
Material at least needs have the following conditions:
A. stress armature need to have certain structural strength, to provide current collection layer structural stress, after avoiding flexible battery from being bent
The deformation that can not restore occurs.
B. to make flexible battery maintain flexible characteristic, stress armature need to have certain pliability.
It connects, according to the spirit of aforementioned present invention, is described in more detail as follows:
It is a kind of structural representation of embodiment of flexible battery disclosed by the invention please refer to shown in Figure 1A to Fig. 1 C
Figure.Flexible battery 10 includes positive pole current collections layer 12, cathode current-collecting layer 14, glue frame 16, stress armature 18 and electrochemistry system
System layer 20, wherein stress armature 18 is set on the first outer surface 122 of positive pole current collections layer 12, as shown in Figure 1A, alternatively, answering
Power armature 18 is set on the second outer surface 142 of cathode current-collecting layer 14, as shown in Figure 1B, alternatively, stress armature 18 is set
It is placed on the first outer surface 122 of positive pole current collections layer 12 and on the second outer surface 142 of cathode current-collecting layer 14, as shown in Figure 1 C.
Please continue to refer to Fig. 1 C, positive pole current collections layer 12, cathode current-collecting layer 14 and glue frame 16 form fenced region, and are equipped in fenced region
Electro-chemical systems layer 20.Electro-chemical systems layer 20 includes anode active material layer 202, anode active material layer 204 and electricity
Property insulating layer 206, wherein anode active material layer 202 is adjacent to the first inner surface 120, the negative electrode active material of positive pole current collections layer 12
The bed of material 204 is adjacent to the second inner surface 140 of cathode current-collecting layer 14, and electrical insulation layer 206 is located in anode active material layer
Between 202 and the anode active material layer 204.
Connect, the young's modulus (Young's modulus) of stress armature is close with current collection layer, and stress armature and
If the thickness of current collection layer is between certain range, which is because, the young's modulus of stress armature differs too with current collection layer
It is more, and the thickness of stress armature differs too much with current collection layer, then by stress when may the different problem of degree of bending,
It, instead can be because of by mutual surface shape once when the deformation quantity difference of the deformation quantity of stress armature and current collection layer is excessive
Becoming influences, the lesser structure of deformation quantity because can not as persistently deformation occurs for the layer structure that set of neighbour, and occur lines generation or
Even rupture.Therefore, stress armature selection young's modulus and material similar in current collection layer, and stress armature and current collection
The thickness ratio of layer is between 0.25 to 6.
For example, if positive pole current collections layer selects stainless steel for material, thickness can between 5 μm to 15 μm, if
Select aluminium for material, thickness then can be between 25 μm to 40 μm, and if cathode current-collecting layer selects stainless steel for material, thickness
Degree can between 5 μm to 15 μm, if selecting copper for material, thickness can between 2 μm to 20 μm, according to it is above-mentioned can
Know, since unlike material has different material stiffness, the thickness range of the substrate of unlike material is not quite similar.And for
For stress armature, preferable thickness is not more than 30 μm, and otherwise blocked up stress armature can become because of the thickness of itself
More difficult bending is obtained, but for the stress armature excessively thin for thickness, is, for example, less than 10 μm, is then difficult to provide reinforcement structure intensity
Purpose, for stress armature, preferable stress armature thickness between 10 μm to 12 μm, can play preferably
Effect, and for the material of stress armature, common and selectable material is such as, but not limited to polyethylene terephthalate
Ester (PET), polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PC), polystyrene (PS), polyimides (polyimide),
Nylon (nylon), polyethylene terephthalate (polyethylene terephthalate), Polyurethane
(polyurethane), the materials such as acrylic (acrylic), epoxy resin (epoxy), silica gel (silicone), but it is actual
Using being not limited to above-mentioned material category.
In addition, the thickness of current collection layer is not more than active material layer, because being that active material layer is coated in current collection layer
Side, and because the material that active material layer is constituted by itself, curved ductility is at a fairly low, if the thickness mistake of active material layer
Thickness, the problem of being not only easy to happen active material layer embrittlement, and active material layer is caused to pierce through current collection layer, also or it can collect
Electric layer excessively pulls active material layer and the situation that current collection layer ruptures occurs.
In addition, stress armature is set in the way of coating (coating), spraying (spraying) and printing (print) etc.
It is placed on current collection layer, alternatively, adhesion layer can be added between stress armature and current collection layer, with bond stress armature and current collection
Layer.
Referring to Fig. 2, it is the structural schematic diagram that the flexible battery of adhesion layer is added, exist with the difference of Figure 1A to Fig. 1 C
In this flexible battery 10 has adhesion layer 22, and adhesion layer 22 is located between the first outer surface 122 and stress armature 18
And/or it is located between the second outer surface 142 and stress armature 18, in other words, positive pole current collections layer 12 and stress armature
At least one between 18, between cathode current-collecting layer 14 and stress armature 18 is equipped with adhesion layer 22, and Fig. 2 only shows anode
Adhesion layer 22 and stress are all set on first outer surface 122 of current collection layer 12 and on the second outer surface 142 of cathode current-collecting layer 14
The case where armature 18, certainly, when adhesion layer 22 may also only exist positive pole current collections layer 12 and stress armature 18, cathode current collection
Between at least one of layer 14 and stress armature 18, actual conditions are depending on the position that stress armature 18 is arranged, example
Such as when stress armature 18 is only set on the first outer surface 122, adhesion layer 22 is also only set to the first outer surface 122 and answers
Between power armature 18.
It connects, adhesion layer is made of adhesion glue, and adhesion glue can be by Polyurethane (polyurethane), acrylic
(Acrylic), epoxy resin (epoxy), silica gel (silicone) etc. form, and thickness is not more than 5 μm.
It holds described in the 5th point of glossary explanation, electro-chemical systems layer is isolated from the outside world by current collection layer and the fenced of glue frame, therefore
To be closed in fenced region, do not contacted with external environment.That is, glue frame needs have the function of the gas that blocks water, need simultaneously
There is pliability, therefore, the material of glue frame of the invention is selected from silica gel (silicone), and silica gel can reach the function for the gas that blocks water
Can, and it still has pliability after curing.In addition, glue frame be at least partly overlapped on orthographic projection direction positive pole current collections layer with
Cathode current-collecting layer, that is to say, that on orthographic projection direction, glue frame is not required to completely overlapped in positive pole current collections layer and cathode current-collecting layer.
Flexible battery on the market will use encapsulating material of the aluminum plastic film as battery, to accommodate positive (cathode), bear
Pole (anode), diaphragm (separator) and electrolyte (electrolyte) etc..It is different from the present invention, the present invention is
Using current collection layer and glue frame as encapsulation, that is to say, that current collection layer is in addition to collecting and discharging electronics, also by electrochemistry together with glue frame
System layer is isolated from the outside world, and the flexible battery for reviewing on the market is then with aluminum plastic film by current collection layer, electro-chemical systems layer and outer
Boundary's isolation.Therefore, the present invention with the use of the flexible battery structure of aluminum plastic film is generally completely different.
In conclusion stress armature is arranged in the present invention on current collection layer, to promote the surface strength of current collection layer, work as current collection
When layer has certain structural stress, it is not likely to produce fold, acute angle, or the deformation that can not restore in bending, in this way,
Even if flexible battery can also maintain good capacitance and battery life by bending repeatedly.
But above-described, only presently preferred embodiments of the present invention is not used to limit the scope of implementation of the present invention.
Therefore that is, all equivalent changes or modification according to carried out by claims of the present invention, it should be included in protection scope of the present invention.
Claims (11)
1. a kind of flexible battery, which is characterized in that include:
One positive pole current collections layer has one first outer surface and one first inner surface；
One cathode current-collecting layer has one second outer surface and one second inner surface；
One glue frame is located between first inner surface and second inner surface, to form a fenced region；And
One electro-chemical systems layer is set in the fenced region and is adjacent to the side surface of the glue frame；
Wherein, a stress armature is provided at least one of first outer surface and second outer surface, and this is answered
The thickness ratio of power armature and the positive pole current collections layer or the cathode current-collecting layer is between 0.25 to 6.
2. flexible battery as described in claim 1, which is characterized in that the electro-chemical systems layer includes a positive electrode active materials
Layer, an anode active material layer and one are located in being electrically insulated between the anode active material layer and the anode active material layer
Layer, the anode active material layer and first abutment, the anode active material layer and second abutment.
3. flexible battery as described in claim 1, which is characterized in that the thickness of the positive pole current collections layer is between 5 μm to 40 μm.
4. flexible battery as described in claim 1, which is characterized in that the thickness of the cathode current-collecting layer is between 2 μm to 20 μm.
5. flexible battery as described in claim 1, which is characterized in that the thickness of the stress armature is between 10 μm to 30 μm.
6. flexible battery as described in claim 1, which is characterized in that the stress armature is selected from polyethylene terephthalate
Ester, polyvinyl chloride, polyethylene, polypropylene, polystyrene, polyimides, nylon, polyethylene terephthalate, Polyurethane, Asia
Gram force, epoxy resin, silica gel and combinations of the above.
7. flexible battery as described in claim 1, which is characterized in that its stress armature and first outer surface, should
It further include an adhesion layer between at least one of stress armature and second outer surface.
8. flexible battery as claimed in claim 7, which is characterized in that the thickness of the adhesion layer is not more than 5 μm.
9. flexible battery as claimed in claim 7, which is characterized in that the adhesion layer is selected from Polyurethane, acrylic, asphalt mixtures modified by epoxy resin
Rouge, silica gel and combinations of the above.
10. flexible battery as described in claim 1, which is characterized in that the young's modulus of the stress armature and the anode collect
Electric layer and the cathode current-collecting layer are close.
11. flexible battery as described in claim 1, which is characterized in that the fenced region is closed.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710908079.1A CN109585897B (en) | 2017-09-29 | 2017-09-29 | Flexible battery |
| JP2020600024U JP3229241U (en) | 2017-09-29 | 2018-08-16 | Flexible battery |
| PCT/CN2018/100846 WO2019062373A1 (en) | 2017-09-29 | 2018-08-16 | Flexible battery |
| DE212018000257.6U DE212018000257U1 (en) | 2017-09-29 | 2018-08-16 | Flexible battery |
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Also Published As
| Publication number | Publication date |
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| JP3229241U (en) | 2020-12-03 |
| WO2019062373A1 (en) | 2019-04-04 |
| CN109585897B (en) | 2022-05-31 |
| DE212018000257U1 (en) | 2020-02-21 |
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