CN206475530U - Battery packaging film and battery - Google Patents
Battery packaging film and battery Download PDFInfo
- Publication number
- CN206475530U CN206475530U CN201621424945.7U CN201621424945U CN206475530U CN 206475530 U CN206475530 U CN 206475530U CN 201621424945 U CN201621424945 U CN 201621424945U CN 206475530 U CN206475530 U CN 206475530U
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- CN
- China
- Prior art keywords
- battery
- layer
- aluminium foil
- packaging film
- polypropylene layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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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- Laminated Bodies (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A kind of battery packaging film, including the first polypropylene layer, aluminium foil layer and the second polypropylene layer, aluminium foil layer laminating are arranged at the first polypropylene layer, and the laminating of the second polypropylene layer is arranged on side of the aluminium foil layer away from the first polypropylene layer.Above-mentioned battery packaging film, by setting the first polypropylene layer in the outside of aluminium foil layer, the barrier aqueous vapor ability of battery packaging film can be lifted, first polypropylene layer can also be protected to aluminium foil layer, avoid the abrasion of aluminium foil layer, so that aluminium foil layer structural stability is good, first polypropylene layer has preferable flexural fatigue resistance, the process bent in battery packaging film is hardly damaged, especially, relative to traditional nylon layer, first polypropylene layer can also improve the corrosion resistance of battery installation, so, the aqueous vapor obstructing capacity of battery pack barrier film can be improved on the basis of reduction battery packages film thickness, so as to improve performance of lithium ion battery.
Description
Technical field
The utility model is related to cell art, more particularly to a kind of battery packaging film and battery.
Background technology
Lithium ion battery is widely used in mobile phone, tablet personal computer, notebook computer, wearable device, portable power source, intelligence
Household, navigator, Baffle Box of Bluetooth, smart card, unmanned plane, electronic cigarette, VR, balance car, wheelbarrow, robot, electric tool, electricity
The fields such as dynamic bicycle, electric automobile, energy-accumulating power station.With the development of science and technology, requirement of the people to lithium ion battery
More and more higher is longer if desired for possessing higher energy density, the cycle life of long period, quickly-chargeable, cruising time
Deng.Client is to the performance requirement more and more higher of lithium ion battery, and that improves battery performance turns into a kind of urgent and universal requirement.
Wherein, whether is the stabilization of the electrochemical system of lithium ion battery, and battery performance is had a major impact.Due to lithium ion
The electrochemical system of battery is extremely sensitive to moisture and oxygen, it is therefore desirable to which battery packaging film has preferable aqueous vapor obstructing capacity.
The aqueous vapor obstructing capacity of battery packaging film can badly influence the battery performances such as the endurance of battery, cycle life.Certainly, this
In the aqueous vapor obstructing capacity said refer to obstructing capacity to moisture and oxygen etc..
Referring to Fig. 1, it is the structural representation of traditional packing film, traditional packaging film 20 includes being folded successively outward by interior
Plus polypropylene layer 21, aluminium foil layer 22 and nylon layer 23, wherein, polypropylene layer 21 be used for encapsulate bond and isolation aqueous vapor, aluminium foil
Layer 22 is also used to completely cut off moisture and oxygen, and because aluminium foil layer is more soft fragile, therefore, nylon layer 23 is used to protect aluminium foil layer.
But, because the aqueous vapor obstructing capacity of nylon layer is poor, the volume and capacity of lithium battery are limited to, traditional packaging film is still deposited
The problem of aqueous vapor obstructing capacity is relatively low and relatively low using the battery performance after traditional packing film.
Utility model content
Based on this, it is necessary to provide a kind of aqueous vapor obstructing capacity preferably and can improve the battery of performance of lithium ion battery
Packaging film and the battery using the battery packaging film.
A kind of battery packaging film, including the first polypropylene layer, aluminium foil layer and the second polypropylene layer, the aluminium foil layer laminating
First polypropylene layer is arranged at, the second polypropylene layer laminating is arranged at the aluminium foil layer away from first polypropylene
On the side of layer.
In one of the embodiments, the thickness of first polypropylene layer, the aluminium foil layer and second polypropylene layer
The ratio of degree is 1：(1.2~1.8)：(1~1.8).
In one of the embodiments, the thickness of the aluminium foil layer is 20 microns~60 microns.
In one of the embodiments, the thickness of second polypropylene layer is 10 microns~60 microns.
In one of the embodiments, the thickness of first polypropylene layer is 10 microns~60 microns.
In one of the embodiments, the aluminium foil layer sets fluted on the side of second polypropylene layer.
In one of the embodiments, the thickness of the groove is the 1/10~1/8 of the aluminium foil layer thickness.
In one of the embodiments, aluminium foil layer array on the side of second polypropylene layer is provided with many
The individual groove.
A kind of battery, including battery core and the battery packaging film for encapsulating the battery core, the battery packaging film is such as
Battery packaging film described in upper any embodiment.
In one of the embodiments, the battery is soft bag lithium ionic cell.
Above-mentioned battery packaging film, by setting first polypropylene layer in the outside of the aluminium foil layer, can lift institute
The barrier aqueous vapor ability of battery packaging film is stated, first polypropylene layer can also be protected to the aluminium foil layer, it is to avoid aluminium foil
The abrasion of layer so that the aluminium foil layer structural stability is good, and first polypropylene layer has preferable flexural fatigue resistance,
The process of battery packaging film bending is hardly damaged, and especially, relative to traditional nylon layer, first polypropylene layer can also be carried
The corrosion resistance that the high battery is installed, in such manner, it is possible to improved on the basis of reduction battery packages film thickness battery pack every
The aqueous vapor obstructing capacity of film, so as to improve performance of lithium ion battery.
Brief description of the drawings
Fig. 1 is the structural representation of conventional batteries packaging film；
Fig. 2 is the structural representation of the battery packaging film of the embodiment of the utility model one.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
For example, a kind of battery packaging film, including the first polypropylene layer, aluminium foil layer and the second polypropylene layer, the aluminium foil layer
Laminating is arranged at first polypropylene layer, and it is poly- away from described first that the second polypropylene layer laminating is arranged at the aluminium foil layer
On the side of propylene layer.
In order to further illustrate above-mentioned battery packaging film, another example is, referring to Fig. 2, battery packaging film 10 includes
First polypropylene layer 100, the polypropylene layer 300 of aluminium foil layer 200 and second, the aluminium foil layer laminating are arranged at first polypropylene
Layer, second polypropylene layer laminating is arranged on side of the aluminium foil layer away from first polypropylene layer, and described the
Inwardly, first polypropylene layer is outwardly for propylene dimer layer.In other words, when encapsulating the battery core of battery using battery packaging film, institute
The second polypropylene layer is stated close to the battery core, the aluminium foil layer is away from the battery core.Specifically, the second polypropylene layer direction
Inner side, first polypropylene layer is towards outside.
It is understood that in traditional battery packaging film, the aqueous vapor obstructing capacity of nylon layer is poor, and aluminium foil layer is more soft
Fragility, structural stability is poor so that the aqueous vapor obstructing capacity of battery packaging film can be reduced increasingly over time.This reality
The battery packaging film that example is provided is applied, by setting first polypropylene layer in the outside of the aluminium foil layer, institute can be lifted
The barrier aqueous vapor ability of battery packaging film is stated, first polypropylene layer can also be protected to the aluminium foil layer, it is to avoid aluminium foil
The abrasion of layer so that the aluminium foil layer structural stability is good, and first polypropylene layer has preferable flexural fatigue resistance,
The process of battery packaging film bending is hardly damaged, and especially, relative to traditional nylon layer, first polypropylene layer can also be carried
The corrosion resistance that the high battery is installed, in such manner, it is possible to improved on the basis of reduction battery packages film thickness battery pack every
The aqueous vapor obstructing capacity of film, so as to improve performance of lithium ion battery.
In one embodiment, the ratio of the thickness of first polypropylene layer, the aluminium foil layer and second polypropylene layer
For 1：(1.1~1.8)：(1~1.8), in such manner, it is possible to the aqueous vapor obstructing capacity of battery pack barrier film is further improved, so as to
Improve performance of lithium ion battery.
In one embodiment, the thickness of second polypropylene layer is 5 microns~80 microns, in such manner, it is possible to further improve
The aqueous vapor obstructing capacity of battery pack barrier film, so as to improve performance of lithium ion battery.And for example, the thickness of the aluminium foil layer is 20
Micron~60 microns.And for example, the thickness of the aluminium foil layer is 10 microns~60 microns.And for example, the thickness of first polypropylene layer
Spend for 10 microns~60 microns, in such manner, it is possible to the aqueous vapor obstructing capacity of battery pack barrier film further be improved, so as to improve lithium
Ion battery performance.
In one embodiment, the thickness of first polypropylene layer is 35 microns, and the thickness of the aluminium foil layer is 30 microns, institute
The thickness for stating the second polypropylene layer is 35 microns, in such manner, it is possible to the aqueous vapor obstructing capacity of battery pack barrier film is further improved, so that
Performance of lithium ion battery can be improved.
It is understood that the battery packaging film is during battery battery core is encapsulated, because the stress of aluminium foil layer is larger, from
And cause easy foldover of aluminium foil layer etc., so as to influence whether the formation process of lithium ion battery.In order to reduce the stainless steel watch
In the stress in face, an embodiment, the aluminium foil layer sets fluted on the side of second polypropylene layer.And for example, institute
The thickness for stating groove is the 1/10~1/8 of the aluminium foil layer thickness.And for example, the aluminium foil layer is close to second polypropylene layer
Array is provided with multiple grooves on side.In such manner, it is possible to reduce the stress of the stainless steel surfaces, the battery is reduced
Film is installed the problem of foldover, to have little to no effect the formation process of lithium ion battery, it is ensured that lithium ion in encapsulation process
Being normally carried out in battery forming process, so as to improve the battery performance of lithium ion battery.
Above-mentioned battery packaging film, by setting first polypropylene layer in the outside of the aluminium foil layer, can lift institute
The barrier aqueous vapor ability of battery packaging film is stated, first polypropylene layer can also be protected to the aluminium foil layer, it is to avoid aluminium foil
The abrasion of layer so that the aluminium foil layer structural stability is good, and first polypropylene layer has preferable flexural fatigue resistance,
The process of battery packaging film bending is hardly damaged, and especially, relative to traditional nylon layer, first polypropylene layer can also be carried
The corrosion resistance that the high battery is installed, in such manner, it is possible to improved on the basis of reduction battery packages film thickness battery pack every
The aqueous vapor obstructing capacity of film, so as to improve performance of lithium ion battery.
The utility model additionally provides a kind of battery.
The battery of the embodiment of the utility model one, including battery core and the battery packaging film for encapsulating the battery core,
The battery packaging film is battery packaging film provided by the utility model.
Wherein, battery core generally comprises positive pole, negative pole and electrolyte.Battery core can be public using those skilled in the art institute
The various battery cores known, will not be repeated here！
And for example, the battery is lithium ion battery, and for example, and the battery is soft bag lithium ionic cell.It is of course also possible to be
Other lithium ion batteries, also or other batteries.
Above-mentioned battery, due to using battery packaging film provided by the utility model, energy is obstructed with preferable aqueous vapor
Power so that battery can have more excellent battery performance.
The utility model is further elaborated below in conjunction with specific embodiment.
Embodiment 1
The side of 30 μm of aluminium foil layers is combined/fitted 35 μm of the first polypropylene layer (mean molecule quantity 400,000), described
Side of the aluminium foil layer away from first polypropylene layer is combined/fitted 35 μm of the second polypropylene layer (mean molecule quantity 400,000),
Form battery packaging film.
Comparative example 1
The side of 40 μm of aluminium foil layers is combined/fitted 38 μm of nylon layer, in the aluminium foil layer away from described first poly- third
The side of alkene layer is combined/fitted 35 μm of the second polypropylene layer (mean molecule quantity 400,000), forms battery packaging film.
Same battery core, Ran Houfen are encapsulated respectively with the battery packaging film of embodiment 1 and the battery packaging film of comparative example 1
Battery after the battery improvement not obtained and the battery before improvement, respectively the battery progress for the battery after improvement and before improvement
Limit scouring depth, heat-sealing pulling force, tensile strength, stain test, water-bath test, hot and humid test, salt spray test, surface can be surveyed
Examination, short circuit, overcharge, hot tank, acupuncture, the test such as energy density and circulation ability.Test result is shown in Table 1.
Table 1
From the aforegoing it can be seen that the battery packaging film provided relative to traditional battery packaging film, the utility model, can make
The integral thickness reduction of battery packaging film, and in heat-sealing pulling force, tensile strength, stain test, water-bath test, hot and humid survey
Examination, salt spray test, surface can be tested etc. in test and all be substantially better than traditional battery packaging film.
Above-mentioned battery packaging film, by setting first polypropylene layer in the outside of the aluminium foil layer, can lift institute
The barrier aqueous vapor ability of battery packaging film is stated, first polypropylene layer can also be protected to the aluminium foil layer, it is to avoid aluminium foil
The abrasion of layer so that the aluminium foil layer structural stability is good, and first polypropylene layer has preferable flexural fatigue resistance,
The process of battery packaging film bending is hardly damaged, and especially, relative to traditional nylon layer, first polypropylene layer can also be carried
The corrosion resistance that the high battery is installed, in such manner, it is possible to improved on the basis of reduction battery packages film thickness battery pack every
The aqueous vapor obstructing capacity of film, so as to improve performance of lithium ion battery.
Battery of today is generally built-in battery, i.e. battery is no longer old-fashioned removable in the inside of the products such as mobile phone
Unload external.Therefore without considering abrasion emphatically, the effect of nylon recedes into the background.The function of the anti-oxygen of waterproof needs strong on the contrary
Change, to ensure battery.The anti-oxygen ability of waterproof of polypropylene (PP) is the ideal material for substituting nylon preferably.This
Utility model is by the design of battery packaging film and does not change the electrochemical system of battery and improves and reach and improve battery performance
Purpose, with the features such as fast, input of producing effects is small, effect is obvious, conversion difficulty is small, risk is small.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of battery packaging film, it is characterised in that including the first polypropylene layer, aluminium foil layer and the second polypropylene layer, the aluminium
Layers of foil laminating is arranged at first polypropylene layer, and the second polypropylene layer laminating is arranged at the aluminium foil layer away from described the
On the side of one polypropylene layer.
2. battery packaging film according to claim 1, it is characterised in that first polypropylene layer, the aluminium foil layer and
The ratio of the thickness of second polypropylene layer is 1：(1.2~1.8)：(1~1.8).
3. battery packaging film according to claim 1, it is characterised in that the thickness of the aluminium foil layer is 20 microns~60 micro-
Rice.
4. battery packaging film according to claim 1, it is characterised in that the thickness of second polypropylene layer is 10 microns
~60 microns.
5. battery packaging film according to claim 1, it is characterised in that the thickness of first polypropylene layer is 10 microns
~60 microns.
6. battery packaging film according to claim 1, it is characterised in that the aluminium foil layer is close to second polypropylene layer
Side on set fluted.
7. battery packaging film according to claim 6, it is characterised in that the thickness of the groove is the aluminium foil layer thickness
1/10~1/8.
8. battery packaging film according to claim 6, it is characterised in that the aluminium foil layer is close to second polypropylene layer
Side on array be provided with multiple grooves.
9. a kind of battery, including battery core and the battery packaging film for encapsulating the battery core, it is characterised in that the battery
Packaging film is such as battery packaging film according to any one of claims 1 to 8.
10. battery as claimed in claim 9, it is characterised in that the battery is soft bag lithium ionic cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621424945.7U CN206475530U (en) | 2016-12-22 | 2016-12-22 | Battery packaging film and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621424945.7U CN206475530U (en) | 2016-12-22 | 2016-12-22 | Battery packaging film and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206475530U true CN206475530U (en) | 2017-09-08 |
Family
ID=59750286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621424945.7U Expired - Fee Related CN206475530U (en) | 2016-12-22 | 2016-12-22 | Battery packaging film and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206475530U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281369A (en) * | 2021-04-23 | 2021-08-20 | 浙江超威创元实业有限公司 | Method for testing reliability of aluminum plastic film |
-
2016
- 2016-12-22 CN CN201621424945.7U patent/CN206475530U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281369A (en) * | 2021-04-23 | 2021-08-20 | 浙江超威创元实业有限公司 | Method for testing reliability of aluminum plastic film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170908 Termination date: 20191222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |