CN206236735U - A kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm - Google Patents
A kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm Download PDFInfo
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- CN206236735U CN206236735U CN201620780990.XU CN201620780990U CN206236735U CN 206236735 U CN206236735 U CN 206236735U CN 201620780990 U CN201620780990 U CN 201620780990U CN 206236735 U CN206236735 U CN 206236735U
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- molecular weight
- weight polyethylene
- high molecular
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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 discloses a kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm, including polyvinylidene fluoride layer, the upper and lower surface of polyvinylidene fluoride layer is provided with ultra-high molecular weight polyethylene layer, the upper and lower surface of the ultra-high molecular weight polyethylene layer is provided with ceramic oxide layer, X-shaped micropore is provided with the polyvinylidene fluoride layer and ultra-high molecular weight polyethylene layer, the infundibulate micropore with X-shaped microporous connectivity is provided with the ceramic oxide layer.
Description
Technical field
The utility model is related to lithium battery diaphragm technical field, more particularly to a kind of low resistance ultra-high molecular weight polyethylene lithium
Battery diaphragm.
Background technology
Lithium battery has become extensively due to having the advantages that voltage is high, energy is high, having extended cycle life and free from environmental pollution
The battery of new generation of application.Increasingly popularized because the electronic product using lithium battery is constantly minimized and applied, lithium electricity
Pond small product size also inevitably reduces therewith, and the thing followed is but failure and accident rate more and more higher, to find out its cause,
After volume diminishes, barrier film is difficult to keep its original ability for hindering electronics to conduct, conventional membrane to be typically in polypropylene material
Middle addition inorganic particulate material, the inorganic particulate of polyalkene diaphragm structure is typically distributed about membrane surface, be not distributed in every
Inside film, easily come off when in use, the ability of inside battery electric leakage can be reduced under battery normal condition still, but in battery
After volume reduces, run into that the situations such as high temperature or high pressure increase and the duration is long, be so just susceptible to both positive and negative polarity short circuit；Separately
Outward, corrosion impact from electrolyte in working environment is more and more prominent and significantly, traditional lithium battery diaphragm with regard to above mentioned problem not
But good, positive effect cannot be shown, a large amount of integrated and compression of lithium battery structure and part is actual, lithium battery diaphragm
The variation of intensity and ductility relativity, by being easily deformed in the case of external force, in the case where rate of rise in temperature accelerates, heat
Amount is difficult dissipation, causes barrier film deformation, micropore occur and reduces the even phenomenon such as closed pore, and long term accumulation causes that the use of lithium battery is steady
The all great hidden danger of qualitative and security.
Utility model content
The purpose of this utility model is to provide a kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm, is used to solve
State technical problem.
To realize above-mentioned technical purpose, what the technical solution of the utility model was realized in：
A kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm, including polyvinylidene fluoride layer, polyvinylidene fluoride layer
Upper and lower surface is provided with ultra-high molecular weight polyethylene layer, and the upper and lower surface of the ultra-high molecular weight polyethylene layer is provided with pottery
X-shaped micropore, the ceramic alumina are provided with porcelain oxide skin(coating), the polyvinylidene fluoride layer and ultra-high molecular weight polyethylene layer
The infundibulate micropore with X-shaped microporous connectivity is provided with nitride layer.
Further, the porosity of the ultra-high molecular weight polyethylene layer is 20-60%.
Further, the thickness of the ultra-high molecular weight polyethylene layer is 0.5-10 μm.
Further, the polyvinylidene fluoride layer is single or multiple lift structure.
Further, the thickness of the ceramic oxide layer is 0.5-10um.
The beneficial effects of the utility model：With good corrosion-resistant and resistance to elevated temperatures, electrolysis that can be in the battery
Stabilization is kept in the corrosive environment of liquid and temperature change when using uses characteristic, so as to extend the stabilization for using of battery
Property, improve battery performance.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structure of the low resistance ultra-high molecular weight polyethylene lithium battery diaphragm according to the utility model embodiment
Schematic diagram.
In figure：
1st, polyvinylidene fluoride layer；2nd, ultra-high molecular weight polyethylene layer；3rd, ceramic oxide layer；4th, infundibulate micropore；11、X
Type micropore.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, all other embodiment that those of ordinary skill in the art are obtained all belongs to
In the scope of the utility model protection.
As shown in figure 1, a kind of low resistance ultra-high molecular weight polyethylene lithium battery according to the utility model embodiment
Barrier film, including polyvinylidene fluoride layer 1, the upper and lower surface of polyvinylidene fluoride layer 1 are provided with ultra-high molecular weight polyethylene layer 2, institute
The upper and lower surface for stating ultra-high molecular weight polyethylene layer 2 is provided with ceramic oxide layer 3, the polyvinylidene fluoride layer 1 and superelevation point
X-shaped micropore 11 is provided with sub- weight northylen layer 2, the leakage connected with X-shaped micropore 11 is provided with the ceramic oxide layer 3
Bucket shape micropore 4.
In a specific embodiment of the present utility model, the porosity of the ultra-high molecular weight polyethylene layer 2 is 20-
60%。
In a specific embodiment of the present utility model, the thickness of the ultra-high molecular weight polyethylene layer 2 is 0.5-10 μ
m。
In a specific embodiment of the present utility model, the polyvinylidene fluoride layer 1 is single or multiple lift structure.
In a specific embodiment of the present utility model, the thickness of the ceramic oxide layer 3 is 0.5-10um.
Low resistance ultra-high molecular weight polyethylene lithium battery diaphragm of the present utility model, when in use with good corrosion-resistant
And resistance to elevated temperatures, keep using for stabilization in the corrosive environment of electrolyte that can be in the battery and temperature change when using
Characteristic, so as to extend the stability for using of battery, improves battery performance, set resistant to elevated temperatures polyvinylidene fluoride layer than
Barrier film remains to keep its integrality at temperature higher, have effectively achieved the low closed pore temperature and rupture of membranes high of lithium battery diaphragm
Temperature, and ensured lithium battery security reliability in use, moreover it is possible to effectively prevent lithium battery blast on fire etc.
The generation of major accident, improves the performance of lithium battery, with low thickness, liquid absorption high, low-resistance characteristic, holds lithium battery
Amount is high, long service life.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm, it is characterised in that：Including polyvinylidene fluoride layer（1）, gather
Vinylidene fluoride layer（1）Upper and lower surface be provided with ultra-high molecular weight polyethylene layer（2）, the ultra-high molecular weight polyethylene layer
（2）Upper and lower surface be provided with ceramic oxide layer（3）, the polyvinylidene fluoride layer（1）With ultra-high molecular weight polyethylene layer
（2）On be provided with X-shaped micropore（11）, the ceramic oxide layer（3）On be provided with and X-shaped micropore（11）The infundibulate of connection
Micropore（4）.
2. low resistance ultra-high molecular weight polyethylene lithium battery diaphragm according to claim 1, it is characterised in that：The superelevation
Molecular weight polyethylene layer（2）Porosity be 20-60%.
3. low resistance ultra-high molecular weight polyethylene lithium battery diaphragm according to claim 2, it is characterised in that：The superelevation
Molecular weight polyethylene layer（2）Thickness be 0.5-10 μm.
4. low resistance ultra-high molecular weight polyethylene lithium battery diaphragm according to claim 1, it is characterised in that：It is described poly- inclined
PVF layer（1）It is single or multiple lift structure.
5. low resistance ultra-high molecular weight polyethylene lithium battery diaphragm according to claim 1, it is characterised in that：The ceramics
Oxide skin(coating)（3）Thickness be 0.5-10um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620780990.XU CN206236735U (en) | 2016-07-22 | 2016-07-22 | A kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620780990.XU CN206236735U (en) | 2016-07-22 | 2016-07-22 | A kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206236735U true CN206236735U (en) | 2017-06-09 |
Family
ID=58989150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620780990.XU Expired - Fee Related CN206236735U (en) | 2016-07-22 | 2016-07-22 | A kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206236735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243213A (en) * | 2021-11-15 | 2022-03-25 | 华南理工大学 | Ultrathin high-strength multilayer composite diaphragm with high-load ceramic particles and preparation method thereof |
-
2016
- 2016-07-22 CN CN201620780990.XU patent/CN206236735U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243213A (en) * | 2021-11-15 | 2022-03-25 | 华南理工大学 | Ultrathin high-strength multilayer composite diaphragm with high-load ceramic particles and preparation method thereof |
| CN114243213B (en) * | 2021-11-15 | 2023-03-24 | 华南理工大学 | Ultrathin high-strength multilayer composite diaphragm with high-load ceramic particles and preparation method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20210722 |