CN209730031U - A kind of novel lithium ion battery separator core - Google Patents
A kind of novel lithium ion battery separator core Download PDFInfo
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- CN209730031U CN209730031U CN201822237152.XU CN201822237152U CN209730031U CN 209730031 U CN209730031 U CN 209730031U CN 201822237152 U CN201822237152 U CN 201822237152U CN 209730031 U CN209730031 U CN 209730031U
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- Prior art keywords
- core
- tubulose
- lithium ion
- ion battery
- battery separator
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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 relates to a kind of lithium ion battery separator core, including core outside core in tubulose and tubulose, core is papery core in tubulose, and the outer core of tubulose is plastics core, it combines closely in tubulose on the lateral surface of core, so that relative motion does not occur for core and the outer core of tubulose in tubulose.Inside and outside core is combined closely integral core, and wherein papery core thickness is larger, provides the structural strength of whole core, and plastics core is attached on the lateral surface of papery core, is contacted with the lithium ion battery separator semi-finished product wound are needed.Since roll of plastic wicking surface is smooth, overcome the paper roll core of the prior art because caused by uneven thickness, surface irregularity lithium ion battery separator semi-finished product winding effect it is poor, film surface is also easy to produce the problem of wrinkle and twill, papery core is the main body of whole core simultaneously, quantity of plastics can be saved, cost is reduced.
Description
Technical field
Utility model belongs to lithium ion battery separator technical field, and in particular to a kind of novel lithium ion battery separator volume
Core.
Background technique
Currently, the extensive use with power vehicle in daily production and life, the series-parallel battery pack of larger amt
Occur, the consistency and security performance of lithium ion battery are concerned, and separate the diaphragm of positive and negative pole material in lithium ion battery
It is more and more important for the safety of lithium ion battery.Lithium battery diaphragm is than relatively thin (5-35 μm), and generally existing thickness is not
Uniform phenomenon (general thickness difference is at 0.2-2 μm), often tension very little will make its deformation.Lithium ion battery separator half at
Easily in uneven thickness or winding tension unevenly causes film surface the bad problem such as wrinkle, twill occur in product production process.One
As the papery core that uses in lithium ion battery separator semi-finished product wrapup procedure can not solve due to thickness or tension caused by this
The bad problem of kind.
Summary of the invention
Of the existing technology in order to solve the problems, such as, the utility model relates to a kind of novel lithium ion battery separator volumes
Core, for the winding of lithium ion battery separator semi-finished product, and the bad problem such as effectively avoid the occurrence of wrinkle, twill.
The lithium ion battery separator core of the utility model includes core and the outer core of tubulose in tubulose, core in the tubulose
For papery core, the outer core of the tubulose is plastics core, is combined closely in the tubulose on the lateral surface of core, so that the tubulose
Relative motion does not occur for interior core and the outer core of the tubulose.
In the embodiments of the present invention, the thickness of core is greater than the thickness of the outer core of the tubulose in the tubulose.It should
Thickness is defined as the material thickness in the radial direction with core outside core in the tubulose or the tubulose.
In the preferred embodiment of the utility model, the internal diameter of core is 180-190mm in the tubulose, with a thickness of 5-
20mm, the outer core of the tubulose with a thickness of 0.1-5mm.In the further preferred embodiment of the utility model, the tubulose is involute
Core with a thickness of 10-15mm, the outer core of the tubulose with a thickness of 0.5-3mm.The utility model even more preferably from embodiment party
In case, in the tubulose core with a thickness of 10mm, the outer core of the tubulose with a thickness of 1mm.
In the embodiments of the present invention, the length of core is greater than or equal to the length of the outer core of the tubulose in the tubulose
Degree.The length is defined as the length of material in the tubulose on the y direction of core or the outer core of the tubulose.
In the preferred embodiment of the utility model, the length of core is 1300-1800mm in the tubulose, outside the tubulose
The length of core is 1300-1800mm.In the further preferred embodiment of the utility model, the length of core is in the tubulose
The length of 1300-1800mm, the outer core of the tubulose are 1200-1700mm.The utility model even more preferably from embodiment
In, the length of core is 1500mm in the tubulose, and the length of the outer core of the tubulose is 1250mm.
In the embodiments of the present invention, it is by core outside the core in the tubulose and the tubulose that this, which is combined closely,
Faying face on apply adhesive core outside core in the tubulose and the tubulose be bonded together and realizes.
In the optional embodiment of the utility model, core is also possible to solid in the tubulose, although this is not excellent
Choosing.
In the present invention, plastics can be the plastic material in any tubulose for being suitable for being bonded in papery in core,
Its non-limitative example includes vinyon, polypropylene plastics, polystyrene plastics, acrylonitrile-butadiene-styrene (ABS) modeling
Material, preferably acrylonitrile-butadiene-styrene (ABS) plastics.
The utility model has the beneficial effects that
The utility model is combined closely by using core outside the tubulose of core and plastics in the tubulose of papery, inside and outside core
Integral core, wherein papery core thickness is larger, provides the structural strength of whole core, and plastics core is attached to papery core
Lateral surface on, contacted with the lithium ion battery separator semi-finished product that wind are needed.Since roll of plastic wicking surface is smooth, overcome existing
Have the paper roll core of technology because caused by uneven thickness, surface irregularity lithium ion battery separator semi-finished product winding effect compared with
The problem of difference, film surface are also easy to produce wrinkle and twill, while papery core is the main body of whole core, can save quantity of plastics,
Reduce cost.
Detailed description of the invention
Fig. 1 shows the longitudinal section of the lithium ion battery separator core of the utility model embodiment；
Fig. 2 shows the cross-sectional view of the lithium ion battery separator core of the utility model embodiment；
Appended drawing reference 1 in figure indicates that core in tubulose, appended drawing reference 2 indicate the outer core of tubulose.
Specific embodiment
The utility model is described in further detail below by specific embodiment and in conjunction with attached drawing.Embodiment is intended to pair
The utility model gives an example, and is not intended to limit the utility model in any way.
Embodiment 1
Fig. 1 shows the longitudinal section of the lithium ion battery separator core of the utility model.Lithium ion battery separator volume
Core includes core 1 and the outer core 2 of tubulose in tubulose.The outer core 2 of tubulose is combined closely in tubulose on the lateral surface of core 1, with
Core 1 is coaxial in tubulose, and relative motion cannot occur for the two, but constitutes whole core.
The material of core 1 is papery in tubulose, identical as the material of lithium ion battery separator core of the prior art.Tubulose
The material of outer core 2 is plastics.The plastic material that can be used have vinyon, polypropylene plastics, polystyrene plastics or
Acrylonitrile-butadiene-styrene (ABS) plastics.Acrylonitrile-butadiene-styrene (ABS) plastics have lustrous surface good and dimensional stability
The advantages that good is preferred plastic material.
Core 2 outside tubulose is combined closely in tubulose on the lateral surface of core 1 by using adhesive.Simply
It says, coats adhesive such as hot melt adhesive on the lateral surface of core 1 in the tubulose of papery, and by plastic material (acrylic nitrile-butadiene two
Alkene-polyglass film) the outer core 2 of tubulose be sleeved in tubulose in core 1.For the ease of being set with, rolled up outside tubulose
The port two sides of core 2 are equipped with edge chamfer.
Fig. 1 shows that the length of tubulose curls inward core 1 is greater than the length of the outer core 2 of tubulose, but rolls up outside core 1 and tubulose in tubulose
Core 2 may be designed in equal length.The length of whole core is limited by the length of core 1 in tubulose.According to the actual needs,
The length of core 1 is 1300-1800mm in tubulose, and the length of the outer core 2 of tubulose is 1300-1800mm；Alternatively, core in tubulose
1 length is 1300-1800mm, and the length of the outer core 2 of tubulose is 1200-1700mm.In a representative design, tubulose
The length of interior core 1 is 1500mm, and the length of the outer core 2 of tubulose is 1250mm.
Fig. 2 shows the cross-sectional view of the lithium ion battery separator core of the utility model.From Figure 2 it can be seen that lithium-ion electric
Pond diaphragm core be it is hollow, i.e., core 1 is hollow in tubulose.Certainly, in tubulose core 1 be also possible to it is solid.By Fig. 2
It can also be seen that the thickness of core 1 is greater than the thickness of the outer core 2 of tubulose in tubulose.Core 1 provides whole volume in thicker tubulose
The structural strength of core, the outer core 2 of relatively thin tubulose meet surface it is smooth while, the paper roll core of the prior art can be overcome because of thickness
Degree is uneven, lithium ion battery separator semi-finished product winding effect is poor caused by surface irregularity, film surface be also easy to produce wrinkle and
The problem of twill, can save quantity of plastics, reduce cost.
According to the actual needs, the internal diameter of core 1 is 180-190mm in tubulose, with a thickness of 5-20mm, the outer core 2 of tubulose
With a thickness of 0.1-5mm；Alternatively, in tubulose core 1 with a thickness of 10-15mm, the outer core 2 of tubulose with a thickness of 0.5-3mm.In
In one representative design, in tubulose core 1 with a thickness of 10mm, the outer core 2 of tubulose with a thickness of 1mm.
In actual use, the lithium ion battery separator core of the present embodiment is mounted on lithium ion battery separator semi-finished product
On winding device, then lithium ion battery separator semi-finished product are covered in the core, make core under the action of the power of 5-30N
Rotation winding.Due to using the lithium ion battery separator core of the present embodiment, it can effectively improve semi-finished product production process
It is middle because thickness or tension it is unstable caused by film roll bad order the problem of, winding film surface wrinkle quantity tail off, twill quantity become
Few, twill degree reduces, so that 15%-20% can be improved in the cutting qualification rate of subsequent product.
Use above specific example is expounded the utility model, is merely used to help understand the utility model,
It is not intended to limit the utility model.Design of the those skilled in the art of the present invention according to the utility model,
Several simple deductions, deformation or replacement can also be made.These deductions, deformation or alternative also fall into the power of the utility model
In sharp claimed range.
Claims (13)
1. a kind of lithium ion battery separator core, which is characterized in that including core outside core in tubulose and tubulose, in the tubulose
Core is papery core, and the outer core of the tubulose is plastics core, and combining closely on the lateral surface of core, makes in the tubulose
It obtains core and the outer core of the tubulose in the tubulose and relative motion does not occur.
2. lithium ion battery separator core according to claim 1, which is characterized in that the thickness of core is big in the tubulose
In the thickness of core outside the tubulose.
3. lithium ion battery separator core according to claim 2, which is characterized in that the internal diameter of core is in the tubulose
180-190 mm, with a thickness of 5-20 mm, the outer core of the tubulose with a thickness of 0.1-5 mm.
4. lithium ion battery separator core according to claim 3, which is characterized in that in the tubulose core with a thickness of
10-15 mm, the outer core of the tubulose with a thickness of 0.5-3 mm.
5. lithium ion battery separator core according to claim 4, which is characterized in that in the tubulose core with a thickness of
10 mm, the outer core of the tubulose with a thickness of 1 mm.
6. lithium ion battery separator core according to claim 1, which is characterized in that the length of core is big in the tubulose
In or equal to outside the tubulose core length.
7. lithium ion battery separator core according to claim 6, which is characterized in that the length of core is in the tubulose
The length of 1300-1800 mm, the outer core of the tubulose are 1300-1800 mm.
8. lithium ion battery separator core according to claim 7, which is characterized in that the length of core is in the tubulose
The length of 1300-1800 mm, the outer core of the tubulose are 1200-1700 mm.
9. lithium ion battery separator core according to claim 8, which is characterized in that the length of core is in the tubulose
The length of 1500 mm, the outer core of the tubulose are 1250 mm.
10. lithium ion battery separator core according to claim 1, which is characterized in that it is described combine closely be by
Apply adhesive for core in the tubulose and the tubulose on the faying face of core and the outer core of the tubulose in the tubulose
Outer core is bonded together and realizes.
11. lithium ion battery separator core according to claim 1, which is characterized in that core is solid in the tubulose
's.
12. lithium ion battery separator core described in any one of -11 according to claim 1, which is characterized in that the plastics are
Vinyon, polypropylene plastics, polystyrene plastics or acrylonitrile-butadiene-styrene (ABS) plastics.
13. lithium ion battery separator core according to claim 12, which is characterized in that the plastics are acrylic nitrile-butadiene
Styrene plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822237152.XU CN209730031U (en) | 2018-12-28 | 2018-12-28 | A kind of novel lithium ion battery separator core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822237152.XU CN209730031U (en) | 2018-12-28 | 2018-12-28 | A kind of novel lithium ion battery separator core |
Publications (1)
| Publication Number | Publication Date |
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| CN209730031U true CN209730031U (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822237152.XU Active CN209730031U (en) | 2018-12-28 | 2018-12-28 | A kind of novel lithium ion battery separator core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022143233A1 (en) * | 2020-12-31 | 2022-07-07 | 上海恩捷新材料科技有限公司 | Lithium battery separator winding device and process |
-
2018
- 2018-12-28 CN CN201822237152.XU patent/CN209730031U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022143233A1 (en) * | 2020-12-31 | 2022-07-07 | 上海恩捷新材料科技有限公司 | Lithium battery separator winding device and process |
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