CN204927393U - Can supply lithium ion battery diaphragm respiratory rolling core of freedom when depositing - Google Patents
Can supply lithium ion battery diaphragm respiratory rolling core of freedom when depositing Download PDFInfo
- Publication number
- CN204927393U CN204927393U CN201520694688.8U CN201520694688U CN204927393U CN 204927393 U CN204927393 U CN 204927393U CN 201520694688 U CN201520694688 U CN 201520694688U CN 204927393 U CN204927393 U CN 204927393U
- Authority
- CN
- China
- Prior art keywords
- core
- lithium ion
- ion battery
- depositing
- rolling
- 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.)
- Withdrawn - After Issue
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
Landscapes
- Cell Separators (AREA)
Abstract
The utility model belongs to the technical field of the production of lithium electron battery separator, concretely relates to can supply lithium ion battery diaphragm respiratory rolling core of freedom when depositing, roll up the core including cylindric stereoplasm, the cover is equipped with the long -barrel -shaped air permeability pad layer by the cellular material preparation on the lateral wall of cylindric stereoplasm book core, cellular material is by MDI type or TDI type polyurethane micropore elastomer materials, and its density is 0.4-0.7gcm3, and the aperture is 0.5-8 mu m. The beneficial effects of the utility model are that, roll up the lateral wall cover of core at the stereoplasm and establish the long -barrel -shaped air permeability pad layer by the cellular material preparation, rolling diaphragm back, the inlayer unfamiliarly can pass through the microcellular structure and outside air intercommunication on air permeability pad layer, and freely " breathing " air is guaranteed the inlayer diaphragm and is deposited shi buhui for a long time and result in unfamiliar micropore to be closed because of difficult with the air contact, guarantees that unfamiliar performance is because of long reduction of resting period.
Description
Technical field
The utility model belongs to lithium ion battery barrier film production technical field, is specifically related to a kind of rolling core freely breathed when depositing for lithium ion battery separator.
Background technology
Although the performance quality of lithium ion battery separator depends on the advance of its property of raw material and masking production technology to a certain extent, but barrier film in process of production, in following process process, particularly how to ensure that properties of product do not reduce also is one of the core technology that lithium ion battery separator is produced.In existing barrier film production procedure, the location mode of barrier film after drilling completes, processing mode etc. are the main causes that separator product performance reduces, according to incompletely statistics, lithium ion battery separator performance reduce have the reason of 80% be because follow-up processing and the mode deposited unreasonable.Therefore, the architectural feature of rolling refill is one of key technology affecting lithium battery diaphragm properties of product.
The rolling core that traditional lithium ion battery separator uses in producing is generally the paper roll core of high strength, have strict requirement to the roughness on paper roll core surface, the concentricity etc. of paper roll core, therefore waxing polishing and core dynamic balancing detection etc. all can be carried out in general paper roll core surface.Production process septation is tightly wrapped in bright and clean paper tube surface, causes the barrier film contacted with paper roll cannot contact with air and make do not have enough air in diaphragm micro-hole.Barrier film in this state overlong time time will form the damage that cannot recover; If the concentricity of paper roll core is inadequate, can produces circular runout, cause barrier film winding tension inconsistent in membrane winding, during membrane winding, sometimes tightly, pine sometimes, barrier film also can produce damage in this case or cause the inconsistent of membrane properties.After paper roll core service time is longer, its surface wax wearing and tearing and cause core rough surface uneven, and then cause diaphragm injury.Several aspect can cause the decline of barrier film quality and performance above.
Utility model content
For above technical problem, the utility model provides a kind of lithium ion battery separator rolling core with high resiliency and highly-breathable bed course, and at least part of solution prior art is not enough.
The technical scheme that the utility model solves prior art deficiency is, a kind of rolling core freely breathed when depositing for lithium ion battery separator is provided, comprise cylindric hard core, the sidewall of described cylindric hard core is arranged with the long tubular prepared by poromerics and breathes freely bed course.
On the basis of technique scheme, the utility model can do following technological improvement further.
Further, described poromerics is polyurethane micropore elastomer material.
Further, described polyurethane micropore elastomer material is MDI type or TDI type, and its density is 0.4 ~ 0.7g/cm
3, its aperture is 0.5 ~ 8 μm.
Further, the thickness of described ventilative bed course is 0.25 ~ 2cm.
Further, described cylindric hard core cross section is radially annular.
Further, being made up of paper or stainless steel of described cylindric hard core.
The beneficial effects of the utility model are, to breathe freely bed course at the sheathed long tubular prepared by poromerics of the lateral wall of hard core, after rolling barrier film, internal layer barrier film can be communicated with outside air by the microcellular structure of ventilative bed course, can free " breathing " air, diaphragm micro-hole will be caused to close because of difficult contact with air when ensureing internal layer barrier film long-term storage, so that the hydraulic performance decline of barrier film; Microporous polyurethane elastomeric material is common conventional porous structural material, and it manufactures and moulding process maturation; Density is 0.4 ~ 0.7g/cm
3and aperture is MDI type or the TDI type polyurethane elastic materials with voids of 0.5 ~ 8 μm, there is high resiliency, highly-breathable and suitable intensity, the elasticity of the ventilative bed course made by it, free shrink or stretching, extension when can ensure that barrier film is deposited, guarantee the smooth and consistency of barrier film face when following process; Polyurethane material is wear-resistant and surperficial relative smooth, can eliminate core because of the uneven damage to barrier film of rough surface; Polyurethane material is wear-resistant and have certain intensity, can eliminate the circular runout in the wrapup procedure that paper roll core concentricity causes not.
Accompanying drawing explanation
The structural representation of the barrier film rolling core of the sheathed ventilative bed course that Fig. 1 provides for the utility model;
Fig. 2 is the structural representation after the barrier film rolling core rolling lithium ion battery separator shown in Fig. 1.
In accompanying drawing, the list of parts representated by each label is as follows:
1, hard core, 2, ventilative bed course, 3, lithium ion battery separator.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figures 1 and 2, the utility model provides a kind of rolling core freely breathed when depositing for lithium ion battery separator, comprise cylindric hard core 1, the sidewall of described cylindric hard core 1 is arranged with the long tubular prepared by poromerics to breathe freely bed course 2, can rolling lithium ion battery separator 3 on described ventilative bed course 2 during use.
On the basis of technique scheme, the utility model can do following technological improvement further.
Further, described poromerics is polyurethane micropore elastomer material.
Further, described polyurethane micropore elastomer material is MDI type or TDI type, and its density is 0.4 ~ 0.7g/cm
3, its aperture is 0.5 ~ 8 μm.
Further, the thickness of described ventilative bed course is 0.25 ~ 2cm.
Further, described cylindric hard core 1 cross section is radially annular.
Further, described cylindric hard core 1 is made up of paper or stainless steel.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. the rolling core freely can breathed when depositing for lithium ion battery separator, comprise cylindric hard core (1), it is characterized in that, the sidewall of described cylindric hard core (1) is arranged with the long tubular prepared by poromerics and breathes freely bed course (2).
2. the rolling core freely breathed when depositing for lithium ion battery separator according to claim 1, it is characterized in that, described poromerics is polyurethane micropore elastomer material.
3. the rolling core freely breathed when depositing for lithium ion battery separator according to claim 2, it is characterized in that, described polyurethane micropore elastomer material is MDI type or TDI type, and its density is 0.4 ~ 0.7g/cm
3, its aperture is 0.5 ~ 8 μm.
4. the rolling core freely breathed when depositing for lithium ion battery separator according to claim 1, it is characterized in that, the thickness of described ventilative bed course (2) is 0.25 ~ 2cm.
5. the rolling core that Gong the lithium ion battery separator according to any one of Claims 1 to 4 is freely breathed when depositing, is characterized in that, described cylindric hard core (1) cross section is radially annular.
6. the rolling core that Gong the lithium ion battery separator according to any one of Claims 1 to 4 is freely breathed when depositing, is characterized in that, described cylindric hard core (1) is made up of paper or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520694688.8U CN204927393U (en) | 2015-09-09 | 2015-09-09 | Can supply lithium ion battery diaphragm respiratory rolling core of freedom when depositing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520694688.8U CN204927393U (en) | 2015-09-09 | 2015-09-09 | Can supply lithium ion battery diaphragm respiratory rolling core of freedom when depositing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204927393U true CN204927393U (en) | 2015-12-30 |
Family
ID=54976495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520694688.8U Withdrawn - After Issue CN204927393U (en) | 2015-09-09 | 2015-09-09 | Can supply lithium ion battery diaphragm respiratory rolling core of freedom when depositing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204927393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118945A (en) * | 2015-09-09 | 2015-12-02 | 武汉惠强新能源材料科技有限公司 | Winding core for letting lithium ion battery membrane to freely breathe during storage |
-
2015
- 2015-09-09 CN CN201520694688.8U patent/CN204927393U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118945A (en) * | 2015-09-09 | 2015-12-02 | 武汉惠强新能源材料科技有限公司 | Winding core for letting lithium ion battery membrane to freely breathe during storage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW200733460A (en) | Method for preparing functional film | |
| CN109968765B (en) | Sponge laying cloth and preparation method and application thereof | |
| CN204927393U (en) | Can supply lithium ion battery diaphragm respiratory rolling core of freedom when depositing | |
| CN204048873U (en) | A kind of removable mattress | |
| CN105118945B (en) | A kind of winding core for being available for lithium ion battery separator freely to be breathed in storage | |
| CN102806625A (en) | Sponge foaming machine | |
| CN202986274U (en) | Novel wall cloth plus material | |
| CN201419511Y (en) | Production line for PVC winding and cutting floor plate | |
| CN203032110U (en) | Double air cushion layer printing rubber cloth | |
| CN209758614U (en) | Coiling mechanism for antirust film | |
| CN203210774U (en) | Anti-impact and anti-tear rubber covered roller | |
| CN201609450U (en) | Mould wheel device | |
| MX365103B (en) | Diaphragm of predefined porosity and method of manufacturing thereof and apparatus therefor. | |
| CN201861289U (en) | Pillow core formed by rolling of gauze mesh and cotton fibre | |
| CN205695667U (en) | A kind of polyurethane rubber roller on cigarette filter opener | |
| CN204540800U (en) | A kind of tipping paper control rubber roll apparatus with gold hoop line | |
| CN218791448U (en) | Roll type sponge elastic layer structure and mattress | |
| CN207511519U (en) | A kind of synthetic leather classified storage wrap-up | |
| CN203995180U (en) | The simple and easy front cover of certificate | |
| CN202671880U (en) | Air-permeable synthetic fiber dress material | |
| CN202950400U (en) | Down quilt | |
| CN204377981U (en) | A kind of mouth mask | |
| CN221000023U (en) | Fabric of ice silk summer sleeping mat | |
| CN203529620U (en) | Air expansion shaft of rewinder | |
| CN203069897U (en) | Spectacle composite structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151230 Effective date of abandoning: 20171103 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20151230 Effective date of abandoning: 20171103 |