CN202888290U - Multi-layer lithium battery diaphragm - Google Patents
Multi-layer lithium battery diaphragm Download PDFInfo
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- CN202888290U CN202888290U CN2012205093193U CN201220509319U CN202888290U CN 202888290 U CN202888290 U CN 202888290U CN 2012205093193 U CN2012205093193 U CN 2012205093193U CN 201220509319 U CN201220509319 U CN 201220509319U CN 202888290 U CN202888290 U CN 202888290U
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- lithium battery
- battery diaphragm
- 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 multi-layer lithium battery diaphragm. The lithium battery diaphragm comprises micro-pores, polyoxyethylene material layers, transition layers, and an ultra-high molecular weight polyethylene layer, wherein the transition layers are arranged at two sides of the ultra-high molecular weight polyethylene layer; the polyoxyethylene material layers are arranged on the transition layers; and the polyoxyethylene material layers and the ultra-high molecular weight polyethylene layer are provided with the micro-pores. By adopting the multi-layer lithium battery diaphragm disclosed by the utility model, the lithium battery diaphragm is prepared from an ultra-high molecular weight polyethylene material; the corrosion resistance and the high temperature resistance of the lithium battery are improved; the work stability of the lithium battery is ensured; the service life is prolonged, and the multi-layer lithium battery diaphragm has good application value.
Description
Technical field
The utility model belongs to lithium battery and makes the field, relates in particular to a kind of multilayer lithium battery diaphragm.
Background technology
Ultra-high molecular weight polyethylene is called for short UHMWPE, English name ultra-high molecular weightpolyethylene.Polyethylene is one of maximum, most widely used plastics variety of current production rate, accounts for 30% of world's plastics total output.Wherein, LDPE, HDPE and be called as the poly LLDPE of the third generation etc. and all belong to the thermoplasticity general-purpose plastics have molecular weight only up to the UHMEPE more than 1,500,000, use as engineering plastics because physical and mechanical property is excellent.The high molecular weight (molecular weight of HDPE only has 2～300,000 usually) of UHMWPE is given its excellent serviceability, and belong to thermoplastic engineering plastic moderate, function admirable, it has almost concentrated the advantage of various plastics, has unrivaled wear-resisting, shock-resistant, the self-lubricating of common polythene and other engineering plastics, corrosion-resistant, impact-absorbing energy, low temperature resistant, the combination property such as health is nontoxic, be difficult for adhering to, be difficult for suction, density is less.In fact, also there is not a kind of simple macromolecular material to have so numerous excellent properties concurrently at present.Ultra-high molecular weight polyethylene has been applied to numerous areas at present, but not yet is applied on the lithium battery diaphragm, and except hydrophily was not good, every characteristic of ultra-high molecular weight polyethylene all was applicable to lithium battery diaphragm.Barrier film main function in battery material is that isolated both positive and negative polarity is to prevent the problems such as battery self discharging and the two poles of the earth short circuit, the lithium ion battery separator material can be divided into: weave film, nowoven membrane (nonwoven fabrics), microporous barrier, composite membrane, diaphragm paper, several classes such as laminate, but owing to be full of the corrosion of electrolyte and the variation of temperature in the operational environment of battery, so when long-term the use, the stability in use of above-mentioned various lithium battery diaphragms is relatively poor, is unfavorable for the use of the long-term stability of battery.
The utility model content
The purpose of this utility model is to utilize at a kind of multilayer lithium battery diaphragm, be intended to solve in the changing environment of the corrosion that has been full of electrolyte and temperature, using of existing in the existing lithium ion battery separator, less stable is unfavorable for the problem that the long-term stability of battery is used.
The purpose of this utility model is to provide a kind of multilayer lithium battery diaphragm, and described lithium battery diaphragm comprises: micropore, polyoxyethylene material layer, transition zone, ultra high molecular polyethylene layer; Described ultra high molecular polyethylene layer both sides arrange described transition zone, and described transition zone arranges described polyoxyethylene material layer, and described polyoxyethylene material layer and ultra high molecular polyethylene layer arrange described micropore.
Further, the thickness of described polyoxyethylene material layer is 12-38 μ m.
Further, the aperture of described micropore is 0.026-0.038 μ m.
Multilayer lithium battery diaphragm of the present utility model, this lithium battery diaphragm comprises: micropore, polyoxyethylene material layer, transition zone, ultra high molecular polyethylene layer; Ultra high molecular polyethylene layer both sides arrange transition zone, and transition zone arranges the polyoxyethylene material layer, and polyoxyethylene material layer and ultra high molecular polyethylene layer arrange micropore.Multilayer lithium battery diaphragm of the present utility model, use the ultra high molecular polyethylene material to make lithium battery diaphragm and have in use good corrosion-resistant and resistance to elevated temperatures, keep stable operating characteristic in the corrosive environment of electrolyte that can be in battery and the variations in temperature when using, thereby prolonged the stability of the use of battery, improved battery performance, and polyoxyethylene water wetted material layer is set on the surface, improved the hydrophily of membrane surface, guarantee the fail safe of lithium battery work, had good using value.
Description of drawings
Fig. 1 is the structural representation of the multilayer lithium battery diaphragm that provides of the utility model.
Among the figure: 1, micropore; 2, polyoxyethylene material layer; 3, transition zone; 4, ultra high molecular polyethylene layer.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model embodiment provides a kind of multilayer lithium battery diaphragm, and this lithium battery diaphragm comprises: micropore, polyoxyethylene material layer, transition zone, ultra high molecular polyethylene layer; Ultra high molecular polyethylene layer both sides arrange transition zone, and transition zone arranges the polyoxyethylene material layer, and polyoxyethylene material layer and ultra high molecular polyethylene layer arrange micropore.
As the prioritization scheme of the utility model embodiment, the thickness of polyoxyethylene material layer is 12-38 μ m.
As the prioritization scheme of the utility model embodiment, the aperture of micropore is 0.026-0.038 μ m.
Referring to accompanying drawing 1, the utility model multilayer lithium battery diaphragm is described in further detail.
As shown in Figure 1, a kind of multilayer lithium battery diaphragm of the present utility model, comprise micropore 1, polyoxyethylene material layer 2, transition zone 3 and ultra high molecular polyethylene layer 4, ultra high molecular polyethylene layer 4 both sides are provided with transition zone 3, be respectively equipped with polyoxyethylene material layer 2 on the transition zone 3, polyoxyethylene material layer 2 and ultra high molecular polyethylene layer 4 are provided with micropore 1, and micropore 1 aperture is 0.026-0.038 μ m, and the thickness of polyoxyethylene material layer 2 is 12-38 μ m.
Multilayer lithium battery diaphragm of the present utility model, this lithium battery diaphragm comprises: micropore, polyoxyethylene material layer, transition zone, ultra high molecular polyethylene layer; Ultra high molecular polyethylene layer both sides arrange transition zone, and transition zone arranges the polyoxyethylene material layer, and polyoxyethylene material layer and ultra high molecular polyethylene layer arrange micropore.Multilayer lithium battery diaphragm of the present utility model, use the ultra high molecular polyethylene material to make lithium battery diaphragm and have in use good corrosion-resistant and resistance to elevated temperatures, keep stable operating characteristic in the corrosive environment of electrolyte that can be in battery and the variations in temperature when using, thereby prolonged the stability of the use of battery, improved battery performance, and polyoxyethylene water wetted material layer is set on the surface, improved the hydrophily of membrane surface, guarantee the fail safe of lithium battery work, had good using value.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. a multilayer lithium battery diaphragm is characterized in that, described lithium battery diaphragm comprises: micropore, polyoxyethylene material layer, transition zone, ultra high molecular polyethylene layer;
Described ultra high molecular polyethylene layer both sides arrange described transition zone, and described transition zone arranges described polyoxyethylene material layer, and described polyoxyethylene material layer and ultra high molecular polyethylene layer arrange described micropore.
2. multilayer lithium battery diaphragm as claimed in claim 1 is characterized in that, the thickness of described polyoxyethylene material layer is 12-38 μ m.
3. multilayer lithium battery diaphragm as claimed in claim 1 is characterized in that, the aperture of described micropore is 0.026-0.038 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205093193U CN202888290U (en) | 2012-09-28 | 2012-09-28 | Multi-layer lithium battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205093193U CN202888290U (en) | 2012-09-28 | 2012-09-28 | Multi-layer lithium battery diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202888290U true CN202888290U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205093193U Expired - Fee Related CN202888290U (en) | 2012-09-28 | 2012-09-28 | Multi-layer lithium battery diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202888290U (en) |
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2012
- 2012-09-28 CN CN2012205093193U patent/CN202888290U/en not_active Expired - Fee Related
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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: 20130417 Termination date: 20180928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |