CN104993086B - A kind of lithium polymer battery - Google Patents
A kind of lithium polymer battery Download PDFInfo
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- CN104993086B CN104993086B CN201510295465.9A CN201510295465A CN104993086B CN 104993086 B CN104993086 B CN 104993086B CN 201510295465 A CN201510295465 A CN 201510295465A CN 104993086 B CN104993086 B CN 104993086B
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- metal net
- barrier film
- negative
- active material
- cathode metal
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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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/463—Separators, membranes or diaphragms characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
- H01M4/74—Meshes or woven material; Expanded metal
- H01M4/745—Expanded metal
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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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Primary Cells (AREA)
Abstract
The present invention provides a kind of lithium polymer battery, it includes positive plate, negative plate, cathode metal net, negative metal net, barrier film and battery case, the barrier film of cathode metal net and the network gel polymer architecture, which integrally condenses, is shaped to overall structure, and the surface certain thickness of the surface protrusion barrier film of cathode metal net and negative metal net.The present invention can not only cause positive active material and negative electrode active material to have firm adhesive force well and grab and apply on wire netting, prevent positive active material and negative electrode active material from obscission occur, and, isolation film strength can effectively be improved, improve the stability of inside battery structure, the adhesive force of positive active material and negative electrode active material can be improved from different perspectives, further enhance its adhesion property, the structure that can be good at wire netting is condensed shaping, by the way that battery case is set into three-decker, improve the protection against the tide of battery, waterproof and antiseptic power.
Description
Technical field
The present invention relates to lithium polymer battery technical field, specially a kind of lithium polymer battery.
Background technology
After Pu Lai get in 1859 trial-produces chemical conversion formula lead-acid accumulator successfully, electrochmical power source enters people's bud.
In the evolution of more than 100 years, the electrochmical power source of new range is continuously emerged, and the performance of electrochmical power source is constantly improved.Especially
It is that the development of electrochmical power source is rapider after World War II.Cd-Ni batteries, 1980s production are generated later
MH-Ni batteries have been given birth to, by the exploration of nearly 20 years, lithium ion battery and lighium polymer have been developed in early 1990s finally
Battery, their development has also been arrived i.e. by the stage of commercialization, and at present, lithium ion battery is with its high specific energy density and service life
Grow and be taken seriously, quickly grow, lithium polymer battery is also given priority in the countries and regions such as the U.S., Japan and Taiwan.Lithium gathers
The development of compound battery is swift and violent, progressively substitution cadmium nickel and Ni-H cell, and grinding for electrode and electrolyte is made using polymer
Study carefully exploitation particularly noticeable.But, the ionic conductivity and mechanical strength of current lithium polymer battery are poor, manufacturing process
Complexity, battery volume is larger, battery capacity not enough, because positive active material and negative electrode active material easily come off, for a long time
Poor using rear ionic conductivity and electrochemical stability, isolation film strength and stability can also become with the use of battery
Change, it is easy to cause lithium polymer battery aging after a long time use, the life-span of discharge and recharge is very restricted.
Based on above technical problem, the invention provides a kind of lithium polymer battery, it is wholely set using on barrier film
Cathode metal net and negative metal net, can not only cause positive active material and negative electrode active material have firm well
Adhesive force and grab and apply on wire netting, prevent that obscission from occurring in positive active material and negative electrode active material, moreover, can have
The raising isolation film strength of effect, improves the stability of inside battery structure, in addition, being set on wire netting quincuncial
Hole, because the surrounding sideline in quincuncial hole is irregular curve shape, therefore, sets coarse micro- on its surrounding sideline
After type is raised, the adhesive force of positive active material and negative electrode active material can be improved from different perspectives, its is further enhanced attached
Performance, prevents it from coming off, in addition, the barrier film of the present invention is network gel polymer architecture, be can be good at and wire netting
Structure is condensed shaping, enhances its intensity, by the way that battery case is set into three-decker, improve battery protection against the tide,
Waterproof and antiseptic power, improve the service life of battery.
The content of the invention
It is an object of the invention to provide one kind is simple and reasonable for structure, cost is low, and technique is simple, and performance is stable, service life
A kind of long lithium polymer battery.
To achieve the above object, the present invention is adopted the following technical scheme that：A kind of lithium polymer battery, it include positive plate,
Negative plate, cathode metal net, negative metal net, barrier film and battery case, the positive plate are aluminium foil, and the negative plate is
Copper foil, the barrier film is arranged between the positive plate and the negative plate, and the barrier film is network gel polymer
Structure, is provided with cathode metal net, is provided between the negative plate and the barrier film between positive plate and the barrier film
Negative metal net, is provided with positive active material between the cathode metal net and the positive plate, the negative metal net and
Negative electrode active material is provided between the negative plate, it is characterised in that the cathode metal net polymerize with the network gel
Integrally cohesion is shaped to overall structure, and the table of the surface protrusion barrier film of the cathode metal net to the barrier film of thing structure
The barrier film of face certain thickness, the negative metal net and the network gel polymer architecture, which integrally condenses, is shaped to overall knot
Structure, and the surface certain thickness of the surface protrusion barrier film of the negative metal net, and the surface of the negative metal net
The thickness of protrusion is more than the thickness that the cathode metal net surface protrudes.
Further, preferably, the thickness that the surface of the barrier film is protruded on the surface of the cathode metal net is 0.1-
0.3mm, the thickness that the surface of the barrier film is protruded on the surface of the negative metal net is 0.2-0.4mm.
Further, preferably, the intensive uniform array in the surface of the cathode metal net and the negative metal net is set
Have and be provided with coarse micro-protrusions on quincuncial hole, and the surrounding sideline in the quincuncial hole.
Further, preferably, the height of the micro-protrusions on the surrounding sideline in the quincuncial hole is 3-10 μm.
Further, preferably, the cathode metal net and the negative metal net using aluminium net, copper mesh, lead net or
Titanium net is made.
Further, preferably, the barrier film is the network gel polymer architecture of acrylonitrile-methacrylate,
In the preparation, the barrier film, cathode metal net and negative metal net integrally cohesion shaping, and the table of barrier film after shaping
Uniformly one layer of coating is based on PVDF/HFP and adds the inorganic matter of a small amount of alundum (Al2O3) in face
The coat of powder, and opened up on coat be formed with more than 40% hole.
Further, preferably, the battery case be three-decker, and the battery case layer structure by with
The brown paper and aluminium foil of water resistance are made, and the outer surface of the brown paper is printed with pattern, and the brown paper is glutinous using viscose
It is attached on the aluminium foil；The matrix that the interlayer structure of the battery case is combined into by multi-layer polyolefin is main body, and in institute
The graphite for stating one layer of 0.5-0.7mm thickness of coating on matrix is made, and the endothecium structure of the battery case is added in polyurethane
8-10% carbon dust mixing spray coating foaming is made.
Further, preferably, the positive active material is lithium and cobalt oxides, lithium nickel oxide or lithium manganese oxide,
The negative electrode active material is carbon dust.
The beneficial effects of the present invention are：
A kind of lithium polymer battery that the present invention is provided, using be wholely set on barrier film cathode metal net and negative pole gold
Belong to net, can not only cause positive active material and negative electrode active material that there is firm adhesive force well and grab and apply in metal
On the net, prevent positive active material and negative electrode active material from obscission occur, moreover, the strong of barrier film can effectively be improved
Degree, improves the stability of inside battery structure, in addition, quincuncial hole is set on wire netting, due to quincuncial hole
Surrounding sideline is irregular curve shape, therefore, can be from difference after setting coarse micro-protrusions on its surrounding sideline
Angle improves the adhesive force of positive active material and negative electrode active material, further enhances its adhesion property, prevents it from coming off, separately
Outside, barrier film of the invention is network gel polymer architecture, and the structure that can be good at wire netting is condensed shaping, is strengthened
Its intensity, by the way that battery case is set into three-decker, improves protection against the tide, waterproof and the antiseptic power of battery, improves
The service life of battery.
Brief description of the drawings
Fig. 1 is a kind of structural representation of lithium polymer battery of the present invention；
Fig. 2 is the cathode metal net and the structural representation of negative metal net of a kind of lithium polymer battery of the present invention；
Wherein, 1, positive plate, 2, negative plate, 3, cathode metal net, 4, negative metal net, 5, barrier film, 6, battery case,
7th, positive active material, 8, negative electrode active material
Embodiment
Come to carry out the present invention detailed description below in conjunction with accompanying drawing.It should be appreciated, however, that accompanying drawing has been provided only more
Understand the present invention well, they should not be interpreted as limitation of the present invention.
As shown in Figure 1-2, the present invention provides a kind of lithium polymer battery, and it includes positive plate 1, negative plate 2, cathode metal
Net 3, negative metal net 4, barrier film 5 and battery case 6, positive plate 1 be aluminium foil, the negative plate 2 be copper foil, it is described every
It is arranged on from film 5 between the positive plate 1 and the negative plate 2, the barrier film 5 is network gel polymer architecture, positive pole
Cathode metal net 3 is provided between piece 1 and the barrier film 5, negative pole is provided between the negative plate 2 and the barrier film 5
Wire netting 4, is provided with positive active material 7, the He of negative metal net 4 between the cathode metal net 3 and the positive plate 1
Negative electrode active material 8 is provided between the negative plate 2, cathode metal net 3 is isolated with the network gel polymer architecture
The one cohesion of film 5 is shaped to overall structure, and the surface of the surface protrusion barrier film 5 of the cathode metal net 3 is necessarily thick
Degree, the one cohesion of barrier film 5 of the negative metal net 4 and the network gel polymer architecture is shaped to overall structure, and
The surface certain thickness of the barrier film 5 is protruded on the surface of the negative metal net 4, and the surface of the negative metal net 4 is convex
The thickness gone out is more than the thickness that the surface of cathode metal net 3 is protruded.
In the present embodiment, the thickness that the surface of the barrier film 5 is protruded on the surface of cathode metal net 3 is 0.2mm, described
The thickness that the surface of the barrier film 5 is protruded on the surface of negative metal net 4 is 0.3mm.As shown in Fig. 2 cathode metal net 3 and institute
The intensive uniform array in surface for stating negative metal net 4 is provided with quincuncial hole, and the surrounding sideline in the quincuncial hole
It is provided with coarse micro-protrusions.The height of micro-protrusions on the surrounding sideline in quincuncial hole is 3-10 μm.Cathode metal
Net and the negative metal net are made of aluminium net, copper mesh, lead net or titanium net.
In addition, barrier film 5 be acrylonitrile-methacrylate network gel polymer architecture, in the preparation, it is described every
From the integrally cohesion shaping of film, cathode metal net and negative metal net, and surface uniformly one layer of the coating of barrier film after shaping
Based on PVDF/HFP and add a small amount of alundum (Al2O3) inorganic material powders coat,
And opened up on coat be formed with more than 40% hole.Battery case is three-decker, and the outer layer knot of the battery case
Structure is made up of brown paper and aluminium foil with water resistance, and the outer surface of the brown paper is printed with pattern, and the brown paper is adopted
Pasted with viscose on the aluminium foil；Based on the matrix that the interlayer structure of the battery case is combined into by multi-layer polyolefin
Body, and the graphite of one layer of 0.5-0.7mm thickness of coating is made on the matrix, the endothecium structure of the battery case is by poly- ammonia
The carbon dust mixing spray coating foaming that 8-10% is added in ester is made.Positive active material is lithium and cobalt oxides, lithium nickel oxide or lithium
Mn oxide, the negative electrode active material is carbon dust.
The present invention can not only cause positive pole to live using cathode metal net and negative metal net is wholely set on barrier film
Property material and negative electrode active material there is firm adhesive force well and grab and apply on wire netting, prevent positive active material and
There is obscission in negative electrode active material, moreover, isolation film strength can be improved effectively, improves inside battery structure
Stability, in addition, quincuncial hole is set on wire netting, because the surrounding sideline in quincuncial hole is irregular shaped form
Shape, therefore, after setting coarse micro-protrusions on its surrounding sideline, positive active material can be improved from different perspectives and negative
The adhesive force of pole active material, further enhances its adhesion property, prevents it from coming off, in addition, the barrier film of the present invention is netted solidifying
Xanthan polymer structure, the structure that can be good at wire netting is condensed shaping, enhances its intensity, by by battery case
Three-decker is set to, protection against the tide, waterproof and the antiseptic power of battery is improved, improves the service life of battery.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, about the common of technical field
Technical staff, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical scheme falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (8)
1. a kind of lithium polymer battery, it includes positive plate, negative plate, cathode metal net, negative metal net, barrier film and battery
Shell, the positive plate is aluminium foil, and the negative plate is copper foil, and the barrier film is arranged on the positive plate and described negative
Between pole piece, the barrier film is network gel polymer architecture, and cathode metal is provided between positive plate and the barrier film
Net, is provided with negative metal net, between the cathode metal net and the positive plate between the negative plate and the barrier film
Positive active material is provided with, negative electrode active material is provided between the negative metal net and the negative plate, its feature exists
In the barrier film of the cathode metal net and the network gel polymer architecture, which integrally condenses, is shaped to overall structure, and institute
The surface certain thickness of the barrier film is protruded on the surface for stating cathode metal net, and the negative metal net gathers with the network gel
Integrally cohesion is shaped to overall structure to the barrier film of compound structure, and the barrier film is protruded on the surface of the negative metal net
Surface certain thickness, and the thickness of the surface protrusion of the negative metal net is more than the thickness that the cathode metal net surface protrudes
Degree.
2. a kind of lithium polymer battery according to claim 1, it is characterised in that the surface protrusion of the cathode metal net
The thickness on the surface of the barrier film is 0.1-0.3mm, and the surface of the barrier film is protruded on the surface of the negative metal net
Thickness is 0.2-0.4mm.
3. a kind of lithium polymer battery according to claim 1, it is characterised in that the cathode metal net and the negative pole
The intensive uniform array in surface of wire netting, which is provided with quincuncial hole, and the surrounding sideline in the quincuncial hole, to be provided with slightly
Rough micro-protrusions.
4. a kind of lithium polymer battery according to claim 3, it is characterised in that the surrounding sideline in the quincuncial hole
On micro-protrusions height be 3-10 μm.
5. a kind of lithium polymer battery according to claim 1, it is characterised in that the cathode metal net and the negative pole
Wire netting is made of aluminium net, copper mesh, lead net or titanium net.
6. a kind of lithium polymer battery according to claim 1, it is characterised in that the barrier film is acrylonitrile-methyl
The network gel polymer architecture of acrylate, in the preparation, the barrier film, cathode metal net and negative metal net are integrally solidifying
Type is polymerized to, and the surface of barrier film after shaping uniformly coats one layer based on PVDF/HFP
Body and add a small amount of alundum (Al2O3) inorganic material powders coat, and opened up on coat be formed with more than 40% hole
Gap.
7. a kind of lithium polymer battery according to claim 1, it is characterised in that the battery case is three-decker,
And the layer structure of the battery case is made up of brown paper and aluminium foil with water resistance, the outer surface print of the brown paper
Pattern is brushed with, the brown paper is pasted on the aluminium foil using viscose；The interlayer structure of the battery case is by many stratas
The matrix that alkene is combined into is main body, and the graphite of one layer of 0.5-0.7mm thickness of coating is made on the matrix, the battery
The carbon dust mixing spray coating foaming that the endothecium structure of shell adds 8-10% in polyurethane is made.
8. a kind of lithium polymer battery according to claim 1-7 any one, it is characterised in that the positive electrode active material
Matter is lithium and cobalt oxides, lithium nickel oxide or lithium manganese oxide, and the negative electrode active material is carbon dust.
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| CN201510295465.9A CN104993086B (en) | 2015-05-29 | 2015-05-29 | A kind of lithium polymer battery |
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| CN201510295465.9A CN104993086B (en) | 2015-05-29 | 2015-05-29 | A kind of lithium polymer battery |
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| CN104993086B true CN104993086B (en) | 2017-09-29 |
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| KR101860996B1 (en) * | 2016-04-07 | 2018-05-25 | 주식회사 제낙스 | Electrode assembly, and method of fabricating the electrode assembly and battery having the electrode assembly |
| CN112615061B (en) * | 2021-01-12 | 2022-12-30 | 深圳市格林晟科技有限公司 | Preparation method and stacking device of battery cell |
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| CN101402790A (en) * | 2008-11-14 | 2009-04-08 | 山东理工大学 | Sulfonation phenylphosphonic acid zirconium doping proton exchanging film and method of producing the same |
| CN103252941A (en) * | 2012-04-12 | 2013-08-21 | 东莞市才智坊新材料有限公司 | Lithium ion battery housing material plastic-aluminum composite membrane and preparation method thereof |
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| KR102118212B1 (en) * | 2012-04-10 | 2020-06-02 | 캘리포니아 인스티튜트 오브 테크놀로지 | Novel separators for electrochemical systems |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101402790A (en) * | 2008-11-14 | 2009-04-08 | 山东理工大学 | Sulfonation phenylphosphonic acid zirconium doping proton exchanging film and method of producing the same |
| CN103252941A (en) * | 2012-04-12 | 2013-08-21 | 东莞市才智坊新材料有限公司 | Lithium ion battery housing material plastic-aluminum composite membrane and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 丙烯腈-甲基丙烯酸酯网状凝胶聚合物电解质研究;齐力等;《化学研究与应用》;20051231;第17卷;全文 * |
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