CN205944207U - Multi -layer lithium battery diaphragm - Google Patents
Multi -layer lithium battery diaphragm Download PDFInfo
- Publication number
- CN205944207U CN205944207U CN201620831353.0U CN201620831353U CN205944207U CN 205944207 U CN205944207 U CN 205944207U CN 201620831353 U CN201620831353 U CN 201620831353U CN 205944207 U CN205944207 U CN 205944207U
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- China
- Prior art keywords
- oxide layer
- micropore
- layer
- lithium battery
- utility
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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
Abstract
The embodiment of the utility model provides a multi -layer lithium battery diaphragm, including polyolefin micropore base film layer, polyolefin micropore base film layer both sides are provided with ceramic oxide layer, be equipped with oxide layer on the pottery oxide layer, polyolefin micropore base film layer is equipped with the micropore, pottery oxide layer is equipped with the slender waist micropore, oxide layer's surface is equipped with concave -convex structure. The beneficial effect of the utility model: setting up to concave -convex structure through the surface with oxide layer, having improved the area of contact of diaphragm with electrolyte, improved lithium battery diaphragm's imbibition ability, increased the ionic permeability, guaranteed lithium cell job stabilization nature, and set up ceramic oxide layer in base film both sides, improved the heat stability and the mechanical properties of battery, ceramic oxide layer's slender waist micropore has effectively improved the fluid power power of hanging of diaphragm, improves the security and the durability scheduling problem of battery.
Description
Technical field
This utility model is related to lithium battery material technical field, it particularly relates to a kind of multilamellar lithium battery diaphragm.
Background technology
The battery core of lithium battery is mainly made up of positive electrode, negative material, electrolyte and barrier film, and barrier film is the important of battery core
Ingredient, the Main Function of barrier film is to separate positive pole and negative pole, prevent two-stage contact and short-circuit, additionally, also have making electrolysis
The function that matter ion passes through, the performance of barrier film determines the interfacial structure of battery, internal resistance etc., directly affects the capacity of battery, follows
The characteristic such as ring and security performance.But the preparation of current lithium battery yet suffers from hidden danger, and explosive incident happens occasionally, peace
Full property and ruggedness have much room for improvement.
For the problem in correlation technique, effective solution is not yet proposed at present.
Utility model content
For the above-mentioned technical problem in correlation technique, the utility model proposes a kind of multilamellar lithium battery diaphragm, Neng Gouyou
The problems such as effect improves safety and the ruggedness of battery.
For realizing above-mentioned technical purpose, the technical solution of the utility model is realized in：
A kind of multilamellar lithium battery diaphragm, including polyolefin micropore base membrane layer, the setting of described polyolefin micropore base membrane layer both sides
There is ceramic oxide layer, described ceramic oxide layer is provided with oxide skin(coating), described polyolefin micropore base membrane layer is provided with micropore, institute
State ceramic oxide layer and be provided with eel-like figure micropore, the outer surface of described oxide skin(coating) is provided with concaveconvex structure.
Further, the thickness of described polyolefin micropore base membrane layer is 6-30um.
The beneficial effects of the utility model：By the outer surface of oxide skin(coating) is set to concaveconvex structure, improve barrier film
With the contact area of electrolyte, improve the imbibition ability of lithium battery diaphragm, increased the permeability of ion it is ensured that lithium battery
The stability of work, and ceramic oxide layer is set in basement membrane both sides, improve heat stability and the mechanical performance of battery, pottery
The eel-like figure micropore of oxide skin(coating) effectively increases the problems such as extension liquid energy power of barrier film, safety of raising battery and ruggedness.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
In required use accompanying drawing 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 a kind of multilamellar lithium battery diaphragm cross-sectional view according to this utility model embodiment；
In figure：
1st, polyolefin micropore base membrane layer；2nd, nano ceramics oxide skin(coating)；3rd, oxide skin(coating)；4th, concaveconvex structure；5th, micropore；6、
Eel-like figure micropore.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained, all belong to
Scope in this utility model protection.
As shown in figure 1, a kind of multilamellar lithium battery diaphragm described in this utility model embodiment, including polyolefin micropore basement membrane
Layer 1, described polyolefin micropore base membrane layer 1 both sides are provided with ceramic oxide layer 2, and described ceramic oxide layer 2 is provided with oxidation
Nitride layer 3, described polyolefin micropore base membrane layer 1 is provided with micropore 5, and described ceramic oxide layer 2 is provided with eel-like figure micropore 6, described oxidation
The outer surface of nitride layer 3 is provided with concaveconvex structure 4.
Further, the thickness of described polyolefin micropore base membrane layer 1 is 6-30um.
In sum, by means of technique scheme of the present utility model, a kind of multilamellar lithium battery diaphragm, by aoxidizing
The outer surface of nitride layer is set to concaveconvex structure, improves the contact area of barrier film and electrolyte, improves the suction of lithium battery diaphragm
Liquid energy power, increased the permeability of ion it is ensured that lithium battery work stability, and basement membrane both sides arrange ceramic oxide
Layer, improves heat stability and the mechanical performance of battery, the eel-like figure micropore of ceramic oxide layer effectively increases the extension liquid of barrier film
Ability, improves the problems such as safety of battery and ruggedness.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this
Within the spirit of utility model and principle, any modification, equivalent substitution and improvement made etc., should be included in this utility model
Protection domain within.
Claims (2)
1. a kind of multilamellar lithium battery diaphragm, including polyolefin micropore base membrane layer（1）It is characterised in that described polyolefin micropore base
Film layer（1）Both sides are provided with ceramic oxide layer（2）, described ceramic oxide layer（2）Surface is provided with oxide skin(coating)（3）, described
Polyolefin micropore base membrane layer（1）It is provided with micropore（5）, described ceramic oxide layer（2）It is provided with eel-like figure micropore（6）, described oxide
Layer（3）Outer surface be provided with concaveconvex structure（4）.
2. a kind of multilamellar lithium battery diaphragm according to claim 1 is it is characterised in that described polyolefin micropore base membrane layer
（1）Thickness be 6-30um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620831353.0U CN205944207U (en) | 2016-08-03 | 2016-08-03 | Multi -layer lithium battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620831353.0U CN205944207U (en) | 2016-08-03 | 2016-08-03 | Multi -layer lithium battery diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205944207U true CN205944207U (en) | 2017-02-08 |
Family
ID=57925217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620831353.0U Expired - Fee Related CN205944207U (en) | 2016-08-03 | 2016-08-03 | Multi -layer lithium battery diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205944207U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275658A (en) * | 2017-06-13 | 2017-10-20 | 江苏神力电源科技有限公司 | A kind of new zinc-bromine bettery barrier film |
| CN110265611A (en) * | 2018-03-12 | 2019-09-20 | 江苏海基新能源股份有限公司 | High-multiplying-power battery diaphragm and lithium ion secondary battery |
-
2016
- 2016-08-03 CN CN201620831353.0U patent/CN205944207U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275658A (en) * | 2017-06-13 | 2017-10-20 | 江苏神力电源科技有限公司 | A kind of new zinc-bromine bettery barrier film |
| CN110265611A (en) * | 2018-03-12 | 2019-09-20 | 江苏海基新能源股份有限公司 | High-multiplying-power battery diaphragm and lithium ion secondary battery |
| CN110265611B (en) * | 2018-03-12 | 2024-03-08 | 江苏海基新能源股份有限公司 | High-rate battery diaphragm and lithium ion secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20210803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |