CN207938698U - A kind of collapsible soft bag lithium ionic cell diaphragm - Google Patents
A kind of collapsible soft bag lithium ionic cell diaphragm Download PDFInfo
- Publication number
- CN207938698U CN207938698U CN201820236338.0U CN201820236338U CN207938698U CN 207938698 U CN207938698 U CN 207938698U CN 201820236338 U CN201820236338 U CN 201820236338U CN 207938698 U CN207938698 U CN 207938698U
- Authority
- CN
- China
- Prior art keywords
- layer
- ceramic coating
- protective layer
- madial wall
- ion
- 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
The utility model belongs to technical field of lithium ion; more particularly to a kind of collapsible soft bag lithium ionic cell diaphragm; including membrane body and protective layer; the madial wall of the membrane body is provided with ceramic coating; the ceramic coating is fixedly connected with the membrane body, and the madial wall of the ceramic coating offers ion through-hole, and the madial wall of the ceramic coating is provided with the protective layer; the madial wall of the protective layer is provided with antioxygen oxidant layer, and the antioxygen oxidant layer is fixedly connected with the protective layer；A kind of collapsible soft bag lithium ionic cell diaphragm of the utility model; by the way that ceramic coating and ion through-hole is arranged; there is ceramic coating thermal stability, ion through-hole to enable ion by diaphragm, lithium ion battery separator is made to be resistant to high temperature; by the way that matcoveredn is arranged; protective layer is on the madial wall of ceramic coating, and when ceramic coating is detached from, electrolyte passes through protective layer; substance in protective layer Electolyte-absorptive avoids the generation of safety accident.
Description
Technical field
The utility model belongs to technical field of lithium ion, and in particular to a kind of collapsible soft bag lithium ionic cell every
Film.
Background technology
In the structure of lithium battery, diaphragm is one of the interior layer assembly of key.The performance of diaphragm determines the interface knot of battery
Structure, internal resistance etc. directly affect the characteristics such as capacity, cycle and the security performance of battery, and the diaphragm haveing excellent performance is to improving battery
Comprehensive performance play an important role.
Original soft bag lithium ionic cell diaphragm, as inner core, does not have heat dissipation effect, and capacity is close using polymer
Degree is not high, and after packing process is relatively easy, and diaphragm is assembled into inside battery, coating is very easy to fall off, and causes safety problem.
Utility model content
The purpose of this utility model is to provide a kind of collapsible soft bag lithium ionic cell diaphragms, to solve above-mentioned background skill
The soft bag lithium ionic cell diaphragm proposed in art, as inner core, does not have heat dissipation effect, and capacity density is not using polymer
After height, packing process is relatively easy, and diaphragm is assembled into inside battery, coating falls off very much, loses the machinery of its original offer
The problem of performance is with accelerating the erosion to electrode, causing operating safety.
To achieve the above object, the utility model provides the following technical solutions：
A kind of collapsible soft bag lithium ionic cell diaphragm, including membrane body and protective layer, the madial wall of the membrane body are set
It is equipped with ceramic coating, the ceramic coating is fixedly connected with the membrane body, and the madial wall of the ceramic coating offers ion
The madial wall of through-hole, the ceramic coating is provided with the protective layer, and the madial wall of the protective layer is provided with antioxygen oxidant layer, institute
Antioxygen oxidant layer is stated to be fixedly connected with the protective layer, the left side wall of the antioxygen oxidant layer is provided with thermal insulation layer, the thermal insulation layer with
The antioxygen oxidant layer is fixedly connected, and the left side wall of the thermal insulation layer is provided with polyolefin layer, the polyolefin layer with it is described heat-insulated
Layer is fixedly connected, and the left side wall of the polyolefin layer is provided with filament layer, and the filament layer is fixed with the polyolefin layer
Connection.
Preferably, the madial wall of the ceramic coating offers the ion through-hole, and the length of the ion through-hole with
The diameter of the ceramic coating is consistent.
Preferably, the protective layer is provided with two layers altogether, and diameter is 40 microns.
Preferably, the thickness of the polyolefin layer is 20 microns.
Preferably, a diameter of 20 microns of the filament layer.
Compared with prior art, the utility model has the beneficial effects that：A kind of collapsible Soft Roll lithium of the utility model from
Sub- battery diaphragm, by the way that ceramic coating and ion through-hole is arranged, there is ceramic coating thermal stability, ion through-hole ion to be enable to lead to
Diaphragm is crossed, lithium ion battery separator ontology is made to be resistant to high temperature, by the way that matcoveredn is arranged, protective layer is in ceramic coating
On side wall, when ceramic coating is detached from, electrolyte passes through protective layer, the substance in protective layer Electolyte-absorptive and interior survey
Structure sheaf heat-resisting oxidation-resistance, and certain mechanical performance is provided, guard electrode preserves from, and avoids the generation of safety accident.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of membrane body in the utility model.
Fig. 3 is the structural schematic diagram of protective layer in the utility model.
In figure：1- membrane bodies, 11- ceramic coatings, 12- ions through-hole, 2- protective layers, 21- antioxygens oxidant layer, 22- thermal insulation layers,
23- polyolefin layers, 24- filament layers.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Please refer to Fig.1-3, a kind of collapsible soft bag lithium ionic cell diaphragm, including membrane body 1 and protective layer 2, membrane body 1
Madial wall be provided with ceramic coating 11, ceramic coating 11 is fixedly connected with membrane body 1, and the madial wall of ceramic coating 11 offers
Matcoveredn 2 is arranged in the madial wall of ion through-hole 12, ceramic coating 11, and the madial wall of protective layer 2 is provided with antioxygen oxidant layer 21, resists
Oxygen oxidant layer 21 is fixedly connected with protective layer 2, and the left side wall of antioxygen oxidant layer 21 is provided with thermal insulation layer 22, thermal insulation layer 22 and antioxygen oxidant layer
21 are fixedly connected, and the left side wall of thermal insulation layer 22 is provided with polyolefin layer 23, and polyolefin layer 23 is fixedly connected with thermal insulation layer 22, polyene
The left side wall of hydrocarbon layers 23 is provided with filament layer 24, and filament layer 24 is fixedly connected with polyolefin layer 23.
In the present embodiment, it is one to two microns in the uniform coating thickness of the madial wall of membrane body 1 and is mixed with nano alumina powder
The inorganic organic slurry of end and gelling agent, obtains ceramic coating 11, in the madial wall packing protective layer 2 of ceramic coating 11, logical
Overstretching membrane body 1 makes to form ion through-hole 12 on the madial wall of membrane body 1, ion is enable to pass through.
In the present embodiment, when the disengaging of ceramic coating 11 occurs, electrolyte passes through the protective layer that ceramic coating 11 wraps up
2, the antioxygen oxidant layer 21 in protective layer 2 can be effective anti-oxidant, and 22 guard electrode of thermal insulation layer is not affected by high temperatures, polyolefin layer
23 can effectively promote the mechanical property of diaphragm, and outermost, filament layer 24 makes diaphragm have toughness, effective to be promoted
The performance of diaphragm, guard electrode preserve from, and avoid the generation of safety accident.
Further, the madial wall of ceramic coating 11 offers ion through-hole 12, and the length of ion through-hole 12 and ceramics
The diameter of coating 11 is consistent.
In the present embodiment, ion through-hole 12 enables ion to penetrate membrane body 1.
Further, protective layer 2 is provided with two layers altogether, and diameter is 40 microns.
In the present embodiment, a diameter of 40 microns of protective layer 2, when the ceramic coating 11 of outer layer falls off, guard electrode
It preserves from.
Further, the thickness of polyolefin layer 23 is 20 microns.
In the present embodiment, the thickness of polyolefin layer 23 is the mechanical property of 20 microns of raising diaphragms.
Further, a diameter of 20 microns of filament layer 24.
In the present embodiment, a diameter of 20 microns of filament layer 24, the toughness of diaphragm can be improved.
The operation principle and process for using of the utility model：After the utility model installs, when charge and discharge, ion passes through
Membrane body 1 generates electric current, and when the disengaging of ceramic coating 11 occurs, electrolyte passes through the protective layer 2 that ceramic coating 11 wraps up, and protects
Antioxygen oxidant layer 21 in sheath 2 can be effective anti-oxidant, and 22 guard electrode of thermal insulation layer is not affected by high temperatures, 23 energy of polyolefin layer
Enough effective mechanical properties for promoting diaphragm, outermost, filament layer 24 makes diaphragm have toughness, effectively improve every
The performance of film, guard electrode preserve from, and avoid the generation of safety accident.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of collapsible soft bag lithium ionic cell diaphragm, it is characterised in that：Including membrane body（1）And protective layer（2）, the film
Ontology（1）Madial wall be provided with ceramic coating（11）, the ceramic coating（11）With the membrane body（1）It is fixedly connected, institute
State ceramic coating（11）Madial wall offer ion through-hole（12）, the ceramic coating（11）Madial wall be provided with the guarantor
Sheath（2）, the protective layer（2）Madial wall be provided with antioxygen oxidant layer（21）, the antioxygen oxidant layer（21）With the protective layer
（2）It is fixedly connected, the antioxygen oxidant layer（21）Left side wall be provided with thermal insulation layer（22）, the thermal insulation layer（22）With the antioxygen
Oxidant layer（21）It is fixedly connected, the thermal insulation layer（22）Left side wall be provided with polyolefin layer（23）, the polyolefin layer（23）With
The thermal insulation layer（22）It is fixedly connected, the polyolefin layer（23）Left side wall be provided with filament layer（24）, the filament
Layer（24）With the polyolefin layer（23）It is fixedly connected.
2. collapsible soft bag lithium ionic cell diaphragm according to claim 1, it is characterised in that：The ceramic coating（11）
Madial wall offer ion through-hole（12）, and the ion through-hole（12）Length and the ceramic coating（11）Diameter one
It causes.
3. collapsible soft bag lithium ionic cell diaphragm according to claim 1, it is characterised in that：The protective layer（2）Altogether
It is provided with two layers, and diameter is 40 microns.
4. collapsible soft bag lithium ionic cell diaphragm according to claim 1, it is characterised in that：The polyolefin layer（23）
Thickness be 20 microns.
5. collapsible soft bag lithium ionic cell diaphragm according to claim 1, it is characterised in that：The filament layer（24）
A diameter of 20 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820236338.0U CN207938698U (en) | 2018-02-09 | 2018-02-09 | A kind of collapsible soft bag lithium ionic cell diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820236338.0U CN207938698U (en) | 2018-02-09 | 2018-02-09 | A kind of collapsible soft bag lithium ionic cell diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207938698U true CN207938698U (en) | 2018-10-02 |
Family
ID=63652291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820236338.0U Active CN207938698U (en) | 2018-02-09 | 2018-02-09 | A kind of collapsible soft bag lithium ionic cell diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207938698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036309A (en) * | 2021-03-01 | 2021-06-25 | 浙江创富新材料有限公司 | Composite nanofiber lithium ion battery diaphragm and preparation method thereof |
-
2018
- 2018-02-09 CN CN201820236338.0U patent/CN207938698U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036309A (en) * | 2021-03-01 | 2021-06-25 | 浙江创富新材料有限公司 | Composite nanofiber lithium ion battery diaphragm and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xiang et al. | Advanced separators for lithium‐ion and lithium–sulfur batteries: a review of recent progress | |
| Wang et al. | Cellulosic materials-enhanced sandwich structure-like separator via electrospinning towards safer lithium-ion battery | |
| CN105470515B (en) | A kind of safe lithium ion power battery anode and the lithium ion battery containing the positive pole | |
| CN107293811B (en) | Battery | |
| Zhang et al. | Synergism of surface group transfer and in-situ growth of silica-aerogel induced high-performance modified polyacrylonitrile separator for lithium/sodium-ion batteries | |
| Liu et al. | A review of naturally derived nanostructured materials for safe lithium metal batteries | |
| CN106654119A (en) | Mixed coating diaphragm and preparation method and application thereof | |
| EP2077594A1 (en) | Composite separator films for lithium-ion batteries | |
| JP6263823B2 (en) | Negative electrode slurry, negative electrode slurry manufacturing method, and secondary battery | |
| TW200913348A (en) | Lithium secondary battery | |
| CN104466188B (en) | Its lithium ion battery of MULTILAYER COMPOSITE anode pole piece and this pole piece preparation method and application | |
| CN108091825A (en) | A kind of electrodes of lithium-ion batteries and its battery | |
| CN105140450A (en) | Lithium ion battery composite separator, preparation method thereof, and lithium ion battery | |
| CN108807819A (en) | Diaphragm and preparation method thereof and lithium-sulfur cell | |
| US11217826B2 (en) | Methods of making sulfide-impregnated solid-state battery | |
| CN108390000A (en) | A kind of preparation method of high-performance Low ESR composite diaphragm | |
| WO2017147793A1 (en) | Method for preparing a lithium-air battery based on lithium ion solid electrolytes | |
| CN105070882A (en) | Lithium-ion battery negative pole piece, and preparation method and application thereof | |
| CN112201905A (en) | Cellulose-based lithium battery flame-retardant diaphragm and preparation method thereof | |
| CN104022248B (en) | A kind of preparation method of high-performance lithium ion conductive membranes | |
| CN110010871A (en) | A kind of method of thin electrolyte carbon nanotube film preparation high voltage flexible lithium ion battery | |
| CN109817869A (en) | A kind of lithium ion battery separator and preparation method thereof | |
| Li et al. | Sandwiched aramid nanofiber/Al2O3-coated polyolefin separators for advanced lithium–sulfur batteries | |
| CN107275572A (en) | A kind of new cathode pole piece and its lithium ion battery of application | |
| CN108023051A (en) | A kind of isolation film and the lithium ion battery containing the isolation film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |