CN203553254U - Polyethylene macromolecular diaphragm - Google Patents
Polyethylene macromolecular diaphragm Download PDFInfo
- Publication number
- CN203553254U CN203553254U CN201320654566.7U CN201320654566U CN203553254U CN 203553254 U CN203553254 U CN 203553254U CN 201320654566 U CN201320654566 U CN 201320654566U CN 203553254 U CN203553254 U CN 203553254U
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- diaphragm
- vinyl polymer
- barrier film
- electrolyte
- 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.)
- Expired - Fee Related
Links
Images
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
Landscapes
- Secondary Cells (AREA)
- Cell Separators (AREA)
Abstract
The utility model relates to a microporous polyethylene macromolecular diaphragm which is applied to lithium batteries and has good electrolyte hydrophilicity and heat dissipating performance. The polyethylene macromolecular diaphragm comprises two layers of lithium battery diaphragms, electrolyte hydrophilic membranes and a heat dissipating membrane, wherein the two layers of lithium battery diaphragms are polyethylene macromolecular diaphragms, micropores are uniformly distributed in the polyethylene macromolecular diaphragms, the electrolyte hydrophilic membranes are sulfonated polysulfone membranes and cover the upper and lower surfaces of the two layers of lithium battery diaphragms, and the heat dissipating membrane is a poly(perfluoroethylene-propylene) membrane and is arranged between the two layers of lithium battery diaphragms. According to the polyethylene macromolecular diaphragm, the electrolyte hydrophilicity of the surfaces of the lithium battery diaphragms is improved, the corrosion to the lithium battery diaphragms caused by an electrolyte is reduced, and stable use characteristics are kept when the polyethylene macromolecular diaphragm is used in a corrosive environment; moreover, the polyethylene macromolecular diaphragm has a stable heat dissipating effect, so that the problems of diaphragm deformation, micropore deflation, even pore closing and the like caused by temperature rise are avoided. The polyethylene macromolecular diaphragm has good electrolyte hydrophilicity and heat dissipating performance and is particularly applicable to high-energy small-size lithium batteries.
Description
Technical field
The utility model relates to a kind of vinyl polymer barrier film, particularly a kind of vinyl polymer micro-pore septum that has good close electrolyte and heat dispersion concurrently being applied on lithium battery.
Background technology
Lithium battery owing to having advantages of that voltage is high, energy is high, have extended cycle life and free from environmental pollution, become the battery of new generation of extensive use.Owing to using, constantly miniaturization of electronic product and the application of lithium battery are more and more universal, lithium battery small product size also inevitably reduces thereupon, the thing followed is but that fault and rate of failure are more and more higher, trace it to its cause, after smaller volume, the a large amount of integrated and compression of lithium battery structure and parts is actual, the rate of rise in temperature making accelerates and is difficult for row and falls apart, and more and more outstanding and remarkable from the corrosion impact of electrolyte in operational environment, tradition lithium battery diaphragm not only cannot show well with regard to the problems referred to above, positive effect, there is on the contrary diaphragm deflection, micropore dwindles the even phenomenon such as closed pore, long-term accumulation makes the stability in use of lithium battery and fail safe all have hidden danger.
Utility model content
The technical problems to be solved in the utility model is the above-mentioned defect that how to overcome prior art, and a kind of vinyl polymer barrier film is provided.
For solving the problems of the technologies described above, this vinyl polymer barrier film comprises double-deck lithium battery diaphragm, it also comprises close electrolyte membrane and heat dissipation film, described double-deck lithium battery diaphragm is vinyl polymer barrier film, uniform micropore on this vinyl polymer barrier film, described hydrophilic membrane is sulfonated polysulfone membrane, it is covered in the upper and lower surface of described double-deck lithium battery diaphragm, described heat dissipation film is perfluoroethylene-propylene film, and it is arranged between two-layer lithium battery diaphragm.So design, has not only improved the close electrolysis fluidity on lithium battery diaphragm surface, has also reduced electrolyte lithium battery diaphragm is corroded, and keeps stable operating characteristic while using in corrosive environment; And there is stable heat radiation function, avoided temperature to raise and the diaphragm deflection, the micropore that cause dwindle even the problems such as closed pore.
As optimization, described sulfonated polysulfone membrane is provided with subregion and dredges electrolyte parting bead, and it is divided into some close electrolysis liquid zones that separate completely by sulfonated polysulfone membrane.So design, the convenient close electrolyte sexual needs for different regions, arrange different close electrolysis liquid zone thickness and area, are not subject to the impact of adjacent area.
As optimization, described perfluoroethylene-propylene film is provided with subregion heat conduction parting bead, and it is divided into some completely independently radiating areas by perfluoroethylene-propylene film.So design, the convenient heat dissipation capacity for different regions needs, and different radiating areas thickness and area is set, and heat is delivered to rapidly to adjacent area, the heat radiation of fast uniform.
As optimization, described SPSF film thickness is 3～20 μ m; Described perfluoroethylene-propylene film thickness is 3～30 μ m.
As optimization, on described vinyl polymer barrier film, the aperture of micropore is 0.02～0.6 μ m.
A kind of vinyl polymer membrane configuration of the utility model is simple, with low cost, reasonable in design, has good close electrolyte and heat dispersion concurrently, is widely used in various lithium batteries, is particularly useful for the lithium battery configuration of high-energy small size.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, a kind of vinyl polymer barrier film of the utility model is described further:
Fig. 1 is the planar structure schematic diagram of the execution mode 1 of this vinyl polymer barrier film;
Fig. 2 is the blast structural representation of the execution mode 1 of this vinyl polymer barrier film;
Fig. 3 is the planar structure schematic diagram of the execution mode 2 of this vinyl polymer barrier film;
Fig. 4 is the blast structural representation of the execution mode 2 of this vinyl polymer barrier film.
In figure: 1-vinyl polymer barrier film, 2-micropore, 3-sulfonated polysulfone membrane, 4-perfluoroethylene-propylene film, the hydrophobic parting bead of 5-subregion, 6-parent's electrolysis liquid zone, 7-subregion heat conduction parting bead, 8-radiating area.
Embodiment
Execution mode 1: as shown in Figure 1, 2, this vinyl polymer barrier film comprises double-deck lithium battery diaphragm, it also comprises close electrolyte membrane and heat dissipation film, described double-deck lithium battery diaphragm is vinyl polymer barrier film 1, uniform micropore 2 on this vinyl polymer barrier film 1, described hydrophilic membrane is sulfonated polysulfone membrane 3, it is covered in the upper and lower surface of described double-deck lithium battery diaphragm, described heat dissipation film is perfluoroethylene-propylene film 4, and it is arranged between two-layer lithium battery diaphragm.Described sulfonated polysulfone membrane 3 thickness are 10 μ m; Described perfluoroethylene-propylene film 4 thickness are 30 μ m.On described vinyl polymer barrier film 1, the aperture of micropore 2 is 0.1 μ m.
Execution mode 2: as shown in Figure 3,4, described sulfonated polysulfone membrane 3 is provided with subregion and dredges electrolyte parting bead 5, it is divided into some close electrolysis liquid zones 6 that separate completely by sulfonated polysulfone membrane 3.Described perfluoroethylene-propylene film 4 is provided with subregion heat conduction parting bead 7, and it is divided into some completely independently radiating areas 8 by perfluoroethylene-propylene film 4.So design, the convenient heat dissipation capacity for different regions needs, and different radiating areas thickness and area is set, and heat is delivered to rapidly to adjacent area, the heat radiation of fast uniform.Described sulfonated polysulfone membrane 3 thickness are 20 μ m; Described perfluoroethylene-propylene film 4 thickness are 15 μ m.On described vinyl polymer barrier film 1, the aperture of micropore 2 is 0.4 μ m.All the other structures and parts as tdescribed in embodiment 1, omit.
The utility model includes but not limited to above-mentioned execution mode, and any product that meets the description of these claims, within all falling into protection range of the present utility model.
Claims (5)
1. a vinyl polymer barrier film, comprise double-deck lithium battery diaphragm, it is characterized in that: also comprise close electrolyte membrane and heat dissipation film, described double-deck lithium battery diaphragm is vinyl polymer barrier film (1), the upper uniform micropore (2) of this vinyl polymer barrier film (1), described close electrolyte membrane is sulfonated polysulfone membrane (3), it is covered in the upper and lower surface of described double-deck lithium battery diaphragm, described heat dissipation film is perfluoroethylene-propylene film (4), and it is arranged between two-layer lithium battery diaphragm.
2. vinyl polymer barrier film according to claim 1, is characterized in that: described sulfonated polysulfone membrane (3) is provided with subregion and dredges electrolyte parting bead (5), and it is divided into some close electrolysis liquid zones (6) that separate completely by sulfonated polysulfone membrane (3).
3. vinyl polymer barrier film according to claim 1, is characterized in that: described perfluoroethylene-propylene film (4) is provided with subregion heat conduction parting bead (7), and it is divided into some completely independently radiating areas (8) by perfluoroethylene-propylene film (4).
4. according to the vinyl polymer barrier film described in claim 2 or 3, it is characterized in that: described sulfonated polysulfone membrane (3) thickness is 3～20 μ m; Described perfluoroethylene-propylene film (4) thickness is 3～30 μ m.
5. according to the vinyl polymer barrier film described in claim 2 or 3, it is characterized in that: the aperture of the upper micropore (2) of described vinyl polymer barrier film (1) is 0.02～0.6 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654566.7U CN203553254U (en) | 2013-10-23 | 2013-10-23 | Polyethylene macromolecular diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654566.7U CN203553254U (en) | 2013-10-23 | 2013-10-23 | Polyethylene macromolecular diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553254U true CN203553254U (en) | 2014-04-16 |
Family
ID=50471330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320654566.7U Expired - Fee Related CN203553254U (en) | 2013-10-23 | 2013-10-23 | Polyethylene macromolecular diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203553254U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611317A (en) * | 2017-08-31 | 2018-01-19 | 东莞市沃泰通新能源有限公司 | A kind of lithium ion battery composite separation membrane and preparation method thereof, lithium ion battery |
| CN107819097A (en) * | 2017-11-10 | 2018-03-20 | 苏州格瑞动力电源科技有限公司 | A kind of lithium ion battery with barrier film |
| CN107845763A (en) * | 2017-11-10 | 2018-03-27 | 苏州格瑞动力电源科技有限公司 | A kind of diaphragm for lithium ion battery |
| CN107845764A (en) * | 2017-11-10 | 2018-03-27 | 苏州格瑞动力电源科技有限公司 | Diaphragm for lithium ion battery |
| CN107845762A (en) * | 2017-11-10 | 2018-03-27 | 苏州格瑞动力电源科技有限公司 | A kind of lithium-ion battery module |
| CN107863478A (en) * | 2017-11-10 | 2018-03-30 | 苏州格瑞动力电源科技有限公司 | Lithium-ion battery module |
-
2013
- 2013-10-23 CN CN201320654566.7U patent/CN203553254U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611317A (en) * | 2017-08-31 | 2018-01-19 | 东莞市沃泰通新能源有限公司 | A kind of lithium ion battery composite separation membrane and preparation method thereof, lithium ion battery |
| CN107819097A (en) * | 2017-11-10 | 2018-03-20 | 苏州格瑞动力电源科技有限公司 | A kind of lithium ion battery with barrier film |
| CN107845763A (en) * | 2017-11-10 | 2018-03-27 | 苏州格瑞动力电源科技有限公司 | A kind of diaphragm for lithium ion battery |
| CN107845764A (en) * | 2017-11-10 | 2018-03-27 | 苏州格瑞动力电源科技有限公司 | Diaphragm for lithium ion battery |
| CN107845762A (en) * | 2017-11-10 | 2018-03-27 | 苏州格瑞动力电源科技有限公司 | A kind of lithium-ion battery module |
| CN107863478A (en) * | 2017-11-10 | 2018-03-30 | 苏州格瑞动力电源科技有限公司 | Lithium-ion battery module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203553254U (en) | Polyethylene macromolecular diaphragm | |
| CN205881961U (en) | Battery plastic casing | |
| CN102324481A (en) | Composite diaphragm for lithium ion battery and preparation method thereof | |
| JP2017504933A (en) | Flexible battery cell | |
| Chen et al. | Applications of ionic liquids in batteries | |
| CN203631635U (en) | Polypropylene multilayer composite diaphragm with micro-pores | |
| CN204155988U (en) | A kind of lithium ion cylinder battery cover plate explosion-proof valve and battery | |
| CN203631631U (en) | High-performance high polymer diaphragm of lithium battery | |
| CN203746947U (en) | High-performance lithium battery multi-layer composite separator | |
| CN204289580U (en) | A kind of nonwoven fabrics macromolecular material structure of composite membrane | |
| CN203746942U (en) | Nanofiber lithium battery diaphragm | |
| CN203553257U (en) | Novel ultra-macromolecular lithium battery diaphragm | |
| CN203746937U (en) | High-performance lithium battery polypropylene composite diaphragm | |
| CN203721827U (en) | Fuel cell stack end plate with compensation function | |
| CN203746945U (en) | Ultra-high molecular weight polyethylene lithium battery composite diaphragm | |
| CN208608286U (en) | A kind of novel lithium battery diaphragm | |
| CN203746950U (en) | Novel ultra-high molecular weight composite polypropylene diaphragm applied to lithium batteries | |
| CN203631633U (en) | Ultra-high molecular polypropylene multilayer composite diaphragm for lithium battery | |
| CN203631639U (en) | Polyethylene lithium battery multilayer composite polyethylene diaphragm with micro-pores | |
| CN204857823U (en) | Lithium battery separator | |
| CN206236735U (en) | A kind of low resistance ultra-high molecular weight polyethylene lithium battery diaphragm | |
| EP1968147A3 (en) | Membrane/electrode assembly for polymer electrolyte fuel cells, and method for operating polymer electrolyte fuel cell | |
| CN203746946U (en) | High-performance composite polypropylene lithium battery diaphragm | |
| CN203746920U (en) | Novel maintenance-free lead-acid storage battery cover and storage battery using battery cover | |
| CN203746940U (en) | High-performance lithium battery separator |
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: 20140416 Termination date: 20181023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |