CN206961883U - A kind of three-dimensional ternary lithium ion battery steel plastic film - Google Patents
A kind of three-dimensional ternary lithium ion battery steel plastic film Download PDFInfo
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- CN206961883U CN206961883U CN201720676677.6U CN201720676677U CN206961883U CN 206961883 U CN206961883 U CN 206961883U CN 201720676677 U CN201720676677 U CN 201720676677U CN 206961883 U CN206961883 U CN 206961883U
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- Prior art keywords
- lithium ion
- ion battery
- plastic film
- dimensional
- ternary lithium
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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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Abstract
The utility model provides a kind of three-dimensional ternary lithium ion battery steel plastic film, three-dimensional ternary lithium ion battery is used as collector using three-dimensional band, three-dimensional band includes metal foil body and the flanging bore being located on the body, flanging bore is to be perforated without blanking, each flanging bore arranges in uniform intervals, the periphery of adjacent or adjacent lines the flanging bores is raised to the two sides of described metal foil body respectively, the top of the projection is spatially latticed, steel plastic film includes heat conduction diaphragm successively from outside to inside, first tack coat, nylon layer, second tack coat, stainless steel foil, 3rd tack coat and CPP layers, stainless steel foil is the bright and clean layer after the pre-heat treatment, CPP layer surfaces are provided with concavo-convex network.The structure for the steel plastic film that the utility model is formed is more stable reliable, improves the impact resistance and security of three-dimensional ternary lithium ion battery, ensure that the quality of product.
Description
Technical field
It the utility model is related to field of cell preparation technology, and in particular to a kind of three-dimensional ternary lithium ion battery steel plastic film.
Background technology
Lithium ion battery is a kind of rechargeable battery, and it relies primarily on lithium ion, and movement carrys out work between a positive electrode and a negative electrode.
Lithium ion battery is typically to be made up of positive pole, negative pole, barrier film, electrolyte and external package casing.Conventional lithium ion battery both positive and negative polarity
Collector using plane foil, using coating process by positive electrode and negative material coated on plane foil.
The ternary lithium ion battery that the technique makes, planar metal paper tinsel have obstructed the migration of pole plate A, B faces ion, two-sided active material
The unbalanced stability that have impact between positive/negative plate, cause battery pole plates locally in overcharge, discharge condition, add battery
Unsafe factor.For electrode thickness between 50-150um, the volume ratio and weight shared by pole plate midplane foil are bigger, influence
The accounting of active material, reduces energy density；Security performance is general, can not pass through lancing test；The manufacturing cost phase of pole plate
To height.
The effect of the external package casing of lithium ion battery is to provide the confined space of a receiving cell active materials, simultaneously
Certain mechanical strength and mechanical protection are provided.With the bulking value density and content volume density applied to lithium ion battery
Requirement get up higher, the requirement more and more higher for external package casing.Steel plastic film because its relative to aluminum plastic film have it is higher
Intensity, rigidity, corrosion resistance, become more preferable selection.However, in actual applications, because the ductility of stainless steel is not so good as
Aluminium, it is easily broken and is layered when casing forming is rushed, while existing steel plastic film heat seal strength is relatively low, is also difficult to reach optimal
Using effect.
Utility model content
In order to solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of three-dimensional ternary lithium ion battery steel modeling
Film.
Technical problem to be solved in the utility model is achieved by the following technical programs：
A kind of three-dimensional ternary lithium ion battery steel plastic film, the three-dimensional ternary lithium ion battery are used as afflux using three-dimensional band
Body, the three-dimensional band include metal foil body and the flanging bore being located on the body, and described flanging bore is to be perforated without blanking, respectively
Individual flanging bore arranges in uniform intervals, and the periphery of adjacent or adjacent lines the flanging bores is respectively to described metal foil body
Two sides projection, the top of the projection are spatially latticed；The steel plastic film glues including heat conduction diaphragm, first successively from outside to inside
Layer, nylon layer, the second tack coat, stainless steel foil, the 3rd tack coat and CPP layers are tied, the stainless steel foil is by the pre-heat treatment
Bright and clean layer afterwards, the CPP layer surfaces are provided with concavo-convex network.
Further, the thickness of the heat conduction diaphragm is 2-8 μm, and the thickness of the nylon layer is 20-30 μm, it is described not
The thickness of rust steel foil is 35-45 μm, and the thickness of the CPP layers is 35-45 μm.
Further, first tack coat, the second tack coat, the thickness of the 3rd tack coat are 2-3 μm.
Further, the CPP is laminated is provided with concavo-convex network, and another side is shiny surface.
Further, the recess depths of the concavo-convex network are 3-4 μm.
The utility model has the advantages that：
Stainless steel foil of the present utility model is the bright and clean layer after the pre-heat treatment, adds the ductility of stainless steel foil,
Simultaneously because the stainless steel foil plays the role of preheating to the second tack coat, prevent the second tack coat is hardened from becoming fragile, prevent stainless steel
Layering between paper tinsel and nylon layer；The concavo-convex grid of the utility model CPP layers increases considerably heat-sealing specific surface area, and during heat-sealing
Strong mechanical tong lock is formed, can reach higher heat seal strength, the holes rate during heat-sealing of steel plastic film is reduced, improves yields；
It is airtight to seal, improve aqueous vapor rejection rate；Oil resistivity is good, improves the whole antiacid corrosivity of steel plastic film, increases the service life；This practicality
New setting heat conduction diaphragm, heat conduction diaphragm have good ductility, for for three-dimensional ternary lithium ion battery discharge and recharge
During itself internal resistance heating radiating and three-dimensional ternary lithium ion battery vibrations or collision process in play cushioning effect, prevent
Three-dimensional ternary lithium ion battery surface breakage or internal short-circuit.The structure for the steel plastic film that the utility model is formed is more stable reliable,
The impact resistance and security of three-dimensional ternary lithium ion battery are improved, ensure that the quality of product.
Brief description of the drawings
Fig. 1 is the structure chart of the utility model steel plastic film；
Fig. 2 is the top view of the utility model CPP layers；
Fig. 3 is the sectional structure chart of the utility model three-dimensional band.
In figure：1st, heat conduction diaphragm, the 2, first tack coat, 3, nylon layer, the 4, second tack coat, 5, stainless steel foil, 6,
Three tack coats, 7, CPP layers, 8, metal foil body, 9, flanging bore.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
A kind of three-dimensional ternary lithium ion battery steel plastic film, the three-dimensional ternary lithium ion battery are used as afflux using three-dimensional band
Body, the three-dimensional band include metal foil body and the flanging bore being located on the body, and described flanging bore is to be perforated without blanking, respectively
Individual flanging bore arranges in uniform intervals, and the periphery of adjacent or adjacent lines the flanging bores is respectively to described metal foil body
Two sides projection, the top of the projection are spatially latticed.The utility model is used as ternary lithium iron cell current-collector using three-dimensional band
Carrier replaces traditional plane foil, and three-dimensional band is perforated using two-way no blanking, and the uniform flanging bore of metal foil body surface is two-sided
In the fibrous stereo metal skeleton of densification, active material is played inlay, package action, improve the electric conductivity of active material
Can, so as to improve the mechanical strength of pole plate.
In the present embodiment, the steel plastic film includes heat conduction diaphragm, the first tack coat, nylon layer, the successively from outside to inside
Two tack coats, stainless steel foil, the 3rd tack coat and CPP layers.
Wherein, the stainless steel foil is the bright and clean layer after the pre-heat treatment.Stainless steel foil of the present utility model is process
Bright and clean layer after the pre-heat treatment, add the ductility of stainless steel foil, simultaneously because the stainless steel foil have to the second tack coat it is pre-
The effect of heat, prevents the second tack coat is hardened from becoming fragile, and prevents the layering between stainless steel foil and nylon layer.Preferably, it is described not
The thickness of rust steel foil is 35-45 μm.
The CPP layer surfaces are provided with concavo-convex network.Preferably, the CPP is laminated is provided with concavo-convex network, separately
It is simultaneously shiny surface.It is highly preferred that the shiny surface is located at the one side that CPP layers contact with the 3rd tack coat.The utility model CPP
The concavo-convex grid of layer increases considerably heat-sealing specific surface area, and strong mechanical tong lock is formed during heat-sealing, can reach higher heat
Sealing strength, the holes rate during heat-sealing of steel plastic film is reduced, improves yields；It is airtight to seal, improve aqueous vapor rejection rate；Oil resistivity is good,
The whole antiacid corrosivity of steel plastic film is improved, is increased the service life.The thickness of the CPP layers is preferably 35-45 μm, the concavo-convex net
The recess depths of lattice structure are 3-4 μm.The shape of the concavo-convex network is not particularly limited, such as can be rhombus.
The heat conduction diaphragm has the good coefficient of heat conduction, for for three-dimensional ternary lithium ion battery charge and discharge process
In itself internal resistance heating radiating；The heat conduction diaphragm has good ductility, three-dimensional ternary lithium ion battery vibrations or
Cushioning effect is played in collision process, prevents three-dimensional ternary lithium ion battery battery surface breakage or internal short-circuit.Heat conduction is protected
The thickness of film is preferably 2-8 μm.
In the present embodiment, the thickness of the nylon layer is preferably 20-30 μm；First tack coat, the second tack coat,
The thickness of three tack coats is 2-3 μm.
Embodiment described above only expresses embodiment of the present utility model, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the utility model patent scope can not be interpreted as, as long as using equivalent substitution or the form of equivalent transformation institute
The technical scheme of acquisition, it all should fall within the scope of protection of the utility model.
Claims (5)
1. a kind of three-dimensional ternary lithium ion battery steel plastic film, the three-dimensional ternary lithium ion battery is used as afflux using three-dimensional band
Body, the three-dimensional band include metal foil body and the flanging bore being located on the body, and described flanging bore is to be perforated without blanking, respectively
Individual flanging bore arranges in uniform intervals, and the periphery of adjacent or adjacent lines the flanging bores is respectively to described metal foil body
Two sides projection, the top of the projection are spatially latticed, it is characterised in that the steel plastic film includes heat conduction successively from outside to inside to be protected
Cuticula, the first tack coat, nylon layer, the second tack coat, stainless steel foil, the 3rd tack coat and CPP layers, the stainless steel foil are warp
The bright and clean layer crossed after the pre-heat treatment, the CPP layer surfaces are provided with concavo-convex network.
2. three-dimensional ternary lithium ion battery steel plastic film as claimed in claim 1, it is characterised in that the thickness of the heat conduction diaphragm
Spend for 2-8 μm, the thickness of the nylon layer is 20-30 μm, and the thickness of the stainless steel foil is 35-45 μm, the thickness of the CPP layers
Spend for 35-45 μm.
3. three-dimensional ternary lithium ion battery steel plastic film as claimed in claim 1, it is characterised in that first tack coat, the
Two tack coats, the thickness of the 3rd tack coat are 2-3 μm.
4. three-dimensional ternary lithium ion battery steel plastic film as claimed in claim 1, it is characterised in that the CPP is laminated to be provided with
Concavo-convex network, another side are shiny surface.
5. three-dimensional ternary lithium ion battery steel plastic film as claimed in claim 4, it is characterised in that the concavo-convex network
Recess depths are 3-4 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720676677.6U CN206961883U (en) | 2017-06-12 | 2017-06-12 | A kind of three-dimensional ternary lithium ion battery steel plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720676677.6U CN206961883U (en) | 2017-06-12 | 2017-06-12 | A kind of three-dimensional ternary lithium ion battery steel plastic film |
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| Publication Number | Publication Date |
|---|---|
| CN206961883U true CN206961883U (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720676677.6U Active CN206961883U (en) | 2017-06-12 | 2017-06-12 | A kind of three-dimensional ternary lithium ion battery steel plastic film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969117A (en) * | 2021-12-14 | 2022-01-25 | 芜湖徽氏新材料科技有限公司 | Steel foil adhesive tape and production process thereof |
-
2017
- 2017-06-12 CN CN201720676677.6U patent/CN206961883U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969117A (en) * | 2021-12-14 | 2022-01-25 | 芜湖徽氏新材料科技有限公司 | Steel foil adhesive tape and production process thereof |
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