CN206076345U - Non- all standing formula coats barrier film - Google Patents
Non- all standing formula coats barrier film Download PDFInfo
- Publication number
- CN206076345U CN206076345U CN201620946477.3U CN201620946477U CN206076345U CN 206076345 U CN206076345 U CN 206076345U CN 201620946477 U CN201620946477 U CN 201620946477U CN 206076345 U CN206076345 U CN 206076345U
- Authority
- CN
- China
- Prior art keywords
- line
- glue
- barrier film
- ceramic layer
- layer
- Prior art date
- 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.)
- Active
Links
Classifications
-
- 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
This utility model discloses a kind of non-all standing formula and coats barrier film; including base membrane layer; the one or both sides of the base membrane layer are coated with aqueous ceramic layer; it is further coated with protecting glue-line on the aqueous ceramic layer; multiple holes being randomly distributed that water supplying capability ceramic layer exposes are formed with the protection glue-line; the shape size of each hole differs, and the protection glue-line is Kynoar (PVDF) glue-line or polymethyl methacrylate (PMMA) and its copolymer glue-line.This utility model avoids the situation of battery diaphragm heat shrinkable by the effect of ceramic layer, improves the heat stability of battery diaphragm by aqueous ceramic layer is coated on base membrane layer；On aqueous ceramic layer, further glue-line is protected in coating; and the hole being randomly distributed is formed on protection glue-line; so that the lithium ion in electrolyte freely can be passed through from hole, so as to improve the ionic conductivity of barrier film, the charge-discharge performance of lithium battery is drastically increased.
Description
Technical field
This utility model is related to battery separator art, and in particular to a kind of non-all standing formula coats barrier film.
Background technology
Lithium ion battery is typically by positive pole, negative pole, barrier film, electrolyte, external package casing composition.And battery inner septum is
Refer to one layer of diaphragm material between anode and battery cathode, be very crucial part in battery, to battery security
Have a direct impact with cost, its Main Function is：Isolation positive and negative electrode simultaneously prevents electronics in battery from passing freely through, and allows electrolysis
Ion in liquid is passed freely through between both positive and negative polarity.The ionic conductivity of battery diaphragm is directly connected to the globality of battery
Can, effect of its isolation both positive and negative polarity makes battery overcharge or the rising of electric current can be limited in the case of temperature is elevated, anti-
Only battery short circuit sets off an explosion, and with the self-closing protective effect of micropore, plays a part of safeguard protection to battery user and equipment.
In prior art, battery diaphragm is usually the one layer of ceramic layer of surface-coated in diaphragm matrix, then in ceramic layer
One layer of aqueouss PVDF glue-line of surface-coated, this aqueouss PVDF glue-line is usually to be completely covered by the surface of ceramic layer, this
Although structure improves the thermal contraction of barrier film and heat stability, but in actual use, due to the ion in electrolyte only
Micropore that can be from barrier film is passed through so that the ionic conductivity of barrier film is relatively low, causes the charge-discharge performance of battery not high.
Utility model content
Disappearance of this utility model for prior art presence, there is provided a kind of non-all standing formula coats barrier film, and which can carry
The ionic conductivity of battery diaphragm, the lithium ion allowed in electrolyte are improved while the thermostability and stability of high battery diaphragm
Higher dynamic performance is obtained, and then improves the charge-discharge performance of lithium battery.
For achieving the above object, this utility model is using such as purgation technical scheme：
A kind of non-all standing formula coats barrier film, including base membrane layer, and the one or both sides of the base membrane layer are coated with aqueouss pottery
Enamel coating, is further coated with protecting glue-line on the aqueous ceramic layer, and water supplying capability ceramic layer dew is formed with the protection glue-line
The multiple holes being randomly distributed for going out, the shape size of each hole differ, and the protection glue-line is Kynoar
(PVDF) glue-line or polymethyl methacrylate (PMMA) and its copolymer glue-line.
Used as a kind of preferred version, the area sum of each hole is 0.1-0.9 times of aqueous ceramic surface layer.
Used as a kind of preferred version, the coating thickness of the protection glue-line is 0.2-3.0 μm.
Used as a kind of preferred version, the coating thickness of the protection glue-line is 0.2-0.8 μm.
Used as a kind of preferred version, the thickness of the base membrane layer is 3-16 μm.
Used as a kind of preferred version, the coating thickness of the aqueous ceramic layer is 0.2-3.0 μm.
Used as a kind of preferred version, the coating thickness of the aqueous ceramic layer is 1.0-1.5 μm.
Used as a kind of preferred version, the base membrane layer is PP or PE film layers.
As a kind of preferred version, the grain diameter in the polymethyl methacrylate (PMMA) and its copolymer glue-line
For 0.1-10 μm.
This utility model has clear advantage and beneficial effect compared with prior art, specifically, by basement membrane
Aqueous ceramic layer is coated on layer, the situation of battery diaphragm heat shrinkable is avoided by the effect of aqueous ceramic layer, electricity is improve
The heat stability of pond barrier film；On aqueous ceramic layer, further glue-line is protected in coating, and irregular point is formed on protection glue-line
The hole of cloth so that the lithium ion in electrolyte freely can be passed through from hole, so as to improve the ionic conductivity of barrier film,
When barrier film is used in lithium battery, the charge-discharge performance of lithium battery can be greatly enhanced；And, hole is irregular point
Cloth, do not need specific equipment to be coated barrier film when barrier film is produced, improve the production efficiency of barrier film, reduce life
Produce cost.
More clearly to illustrate architectural feature of the present utility model, technological means and its specific purposes for being reached and work(
Can, below in conjunction with the accompanying drawings with specific embodiment being described in further detail to this utility model：
Description of the drawings
Fig. 1 is the cross section structure schematic diagram of the first embodiment of this utility model；
Fig. 2 is the overlooking the structure diagram of the first embodiment of this utility model；
Fig. 3 is the cross section structure schematic diagram of the second embodiment of this utility model.
Accompanying drawing identifier declaration：
1st, base membrane layer 2, aqueous ceramic layer 3, protection glue-line
31st, hole
Specific embodiment
First, refer to shown in Fig. 1 and Fig. 2, first embodiment of the present utility model, a kind of non-all standing formula coating every
Film, including base membrane layer 1, the side of the base membrane layer 1 are coated with aqueous ceramic layer 2, further coat on the aqueous ceramic layer 2
There is protection glue-line 3, on the protection glue-line 3, be formed with multiple holes 31 being randomly distributed that water supplying capability ceramic layer 2 exposes, institute
The shape size for stating each hole 31 differs, and the area sum of each hole 31 is the 0.1- of 2 surface area of aqueous ceramic layer
0.9 times.Wherein, the protection glue-line 3 is Kynoar (PVDF) glue-line or polymethyl methacrylate (PMMA) and its is total to
Polymers glue-line, the grain diameter in the polymethyl methacrylate (PMMA) and its copolymer glue-line are 0.1-10 μm；It is described
Base membrane layer 1 is PP or PE film layers；The coating thickness of the protection glue-line 3 is 0.2-3 μm, preferably 0.2-0.8 μm；The basement membrane
The thickness of layer 1 is 3-16 μm；The coating thickness of the aqueous ceramic layer 2 is 0.5-3.0 μm, preferably 1.0-1.5 μm.
As shown in figure 3, the cross section structure schematic diagram of another embodiment of the present utility model, which is different from first embodiment
Part be：The both sides of the base membrane layer 1 are coated with aqueous ceramic layer 2, and the outer surface of the aqueous ceramic layer 2 is equipped with guarantor
Shield glue-line 3, is formed with multiple holes 31 being randomly distributed that water supplying capability ceramic layer 2 exposes on the protection glue-line 3, described each
The shape size of individual hole 31 differs, and the area sum of each hole 31 is the 0.1-0.9 of 2 surface area of aqueous ceramic layer
Times.
In sum, this utility model is by coating aqueous ceramic layer 2 on base membrane layer 1, by the work of aqueous ceramic layer 2
With the situation for avoiding battery diaphragm heat shrinkable, the heat stability of battery diaphragm is improve；On aqueous ceramic layer 2 further
Coating protection glue-line 3, and the hole 31 being randomly distributed is formed on protection glue-line 3 so that the lithium ion in electrolyte can be certainly
By passing through from hole 31, so as to improve the ionic conductivity of barrier film, when barrier film is used in lithium battery, Neng Gouji
The earth improves the charge-discharge performance of lithium battery；And, hole 31 is randomly distributed, need not be specific when barrier film is produced
Equipment is coated to barrier film, is improve the production efficiency of barrier film, is reduced production cost.
The above, is only preferred embodiment of the present utility model, not to limit this utility model, thus it is every
Any modification, equivalent substitution and improvements actually made to above example according to technology of the present utility model etc., still fall within this
In the range of utility model technical scheme.
Claims (9)
1. a kind of non-all standing formula coats barrier film, it is characterised in that：Including base membrane layer, the one or both sides of the base membrane layer coat
There is aqueous ceramic layer, be further coated with protecting glue-line on the aqueous ceramic layer, on the protection glue-line, be formed with water supplying capability
Multiple holes being randomly distributed that ceramic layer exposes, the shape size of each hole differ, and the protection glue-line is poly-
Vinylidene glue-line or polymethyl methacrylate and its copolymer glue-line.
2. non-all standing formula according to claim 1 coats barrier film, it is characterised in that：The area sum of each hole
For 0.1-0.9 times of aqueous ceramic surface layer.
3. non-all standing formula according to claim 1 coats barrier film, it is characterised in that：The coating thickness of the protection glue-line
For 0.2-3.0 μm.
4. non-all standing formula according to claim 3 coats barrier film, it is characterised in that：The coating thickness of the protection glue-line
For 0.2-0.8 μm.
5. non-all standing formula according to claim 1 coats barrier film, it is characterised in that：The thickness of the base membrane layer is 3-16
μm。
6. non-all standing formula according to claim 1 coats barrier film, it is characterised in that：The coating of the aqueous ceramic layer is thick
Spend for 0.2-3.0 μm.
7. non-all standing formula according to claim 6 coats barrier film, it is characterised in that：The coating of the aqueous ceramic layer is thick
Spend for 1.0-1.5 μm.
8. non-all standing formula according to claim 1 coats barrier film, it is characterised in that：The base membrane layer is PP or PE films
Layer.
9. non-all standing formula according to claim 1 coats barrier film, it is characterised in that：The polymethyl methacrylate and
Grain diameter in its copolymer glue-line is 0.1-10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620946477.3U CN206076345U (en) | 2016-08-26 | 2016-08-26 | Non- all standing formula coats barrier film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620946477.3U CN206076345U (en) | 2016-08-26 | 2016-08-26 | Non- all standing formula coats barrier film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206076345U true CN206076345U (en) | 2017-04-05 |
Family
ID=58432048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620946477.3U Active CN206076345U (en) | 2016-08-26 | 2016-08-26 | Non- all standing formula coats barrier film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206076345U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649330A (en) * | 2017-09-06 | 2018-02-02 | 涓ョ考 | A kind of preparation facilities and preparation technology of non-all standing formula coating barrier film |
| CN108963168A (en) * | 2018-08-23 | 2018-12-07 | 河北金力新能源科技股份有限公司 | Battery separator and preparation method thereof |
| CN108987650A (en) * | 2018-07-20 | 2018-12-11 | 河北金力新能源科技股份有限公司 | Battery separator and preparation method thereof and battery |
| WO2019034143A1 (en) * | 2017-08-18 | 2019-02-21 | Shanghai Energy New Materials Technology Co., Ltd. | Separators and electrochemical devices comprising the separator |
| CN110265609A (en) * | 2019-07-18 | 2019-09-20 | 河南曼博睿新材料科技有限公司 | A kind of battery separator with fast charge function |
| CN110635091A (en) * | 2019-08-19 | 2019-12-31 | 安徽理工大学 | Lithium battery composite diaphragm and preparation method thereof |
| WO2021244410A1 (en) * | 2020-06-02 | 2021-12-09 | 孚能科技(镇江)有限公司 | Soft-pack lithium ion battery cell and preparation method therefor |
| CN114142175A (en) * | 2021-11-30 | 2022-03-04 | 惠州亿纬锂能股份有限公司 | Multiplying power type diaphragm, preparation method thereof and application thereof in battery |
-
2016
- 2016-08-26 CN CN201620946477.3U patent/CN206076345U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019034143A1 (en) * | 2017-08-18 | 2019-02-21 | Shanghai Energy New Materials Technology Co., Ltd. | Separators and electrochemical devices comprising the separator |
| CN107649330A (en) * | 2017-09-06 | 2018-02-02 | 涓ョ考 | A kind of preparation facilities and preparation technology of non-all standing formula coating barrier film |
| CN108987650A (en) * | 2018-07-20 | 2018-12-11 | 河北金力新能源科技股份有限公司 | Battery separator and preparation method thereof and battery |
| CN108963168A (en) * | 2018-08-23 | 2018-12-07 | 河北金力新能源科技股份有限公司 | Battery separator and preparation method thereof |
| CN110265609A (en) * | 2019-07-18 | 2019-09-20 | 河南曼博睿新材料科技有限公司 | A kind of battery separator with fast charge function |
| CN110635091A (en) * | 2019-08-19 | 2019-12-31 | 安徽理工大学 | Lithium battery composite diaphragm and preparation method thereof |
| WO2021244410A1 (en) * | 2020-06-02 | 2021-12-09 | 孚能科技(镇江)有限公司 | Soft-pack lithium ion battery cell and preparation method therefor |
| CN114142175A (en) * | 2021-11-30 | 2022-03-04 | 惠州亿纬锂能股份有限公司 | Multiplying power type diaphragm, preparation method thereof and application thereof in battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206076345U (en) | Non- all standing formula coats barrier film | |
| CN208690415U (en) | A kind of flexible lithium ion battery | |
| JP2017533555A5 (en) | ||
| EP4235937A3 (en) | Large-format battery anodes comprising silicon particles | |
| CN207474560U (en) | A kind of low self-discharge ceramic diaphragm | |
| CN203932169U (en) | Environmental protection breathable type battery inner septum | |
| CN109817869A (en) | A kind of lithium ion battery separator and preparation method thereof | |
| CN105977543A (en) | Flexible battery | |
| CN207883842U (en) | Long-life rectangular lithium ion battery | |
| CN204144367U (en) | Environmental protection breathable safe battery inner septum | |
| CN204144368U (en) | Environmental protection and safety type battery inner septum | |
| CN206564290U (en) | collector and battery | |
| CN107369837A (en) | A kind of battery core pole piece and lithium ion battery cell | |
| CN105576178A (en) | Wet nonwoven fabric ceramic diaphragm of lithium ion power battery and preparation method thereof | |
| CN205944207U (en) | Multi -layer lithium battery diaphragm | |
| CN106229543A (en) | A kind of lithium titanate battery and manufacture method | |
| CN207587771U (en) | A kind of polymer Li-ion battery of anti-short circuit | |
| CN204144369U (en) | Point-like ceramic cell inner septum | |
| CN109830745A (en) | A kind of gel button flexible package lithium cell and preparation process | |
| CN205810978U (en) | Flexible battery | |
| CN205428711U (en) | Graphite alkene ultracapacitor system structure | |
| CN104993086B (en) | A kind of lithium polymer battery | |
| CN206584994U (en) | The PMMA ceramic coating membranes of improvement | |
| CN204441367U (en) | A kind of lithium ion battery separator | |
| CN205944205U (en) | Novel composite membrane for lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |