CN204508455U - The special tube core of one of lithium ion battery separator winding stress relief - Google Patents
The special tube core of one of lithium ion battery separator winding stress relief Download PDFInfo
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- CN204508455U CN204508455U CN201520196012.6U CN201520196012U CN204508455U CN 204508455 U CN204508455 U CN 204508455U CN 201520196012 U CN201520196012 U CN 201520196012U CN 204508455 U CN204508455 U CN 204508455U
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- tube core
- elastomer layer
- barrier film
- core body
- lithium ion
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Abstract
The special tube core of one of lithium ion battery separator winding stress relief, comprise the tube core body that cross-sectional plane is annular arrangement, key is: set up elastomer layer at the outside face of tube core body, elastomer layer is the laminar texture be made up of elastomeric material, the inside face of elastomer layer is fixedly connected with the outside face of tube core body, and the height of elastomer layer equals the height of tube core body.The special tube core of band elastomer layer is used to carry out rolling, the tension force that barrier film produces is absorbed by elastomeric material, the internal stress of barrier film is discharged, deformation would not be there is in such barrier film because of overtension, so neither affect the characteristic of barrier film, also not easily there is quick-fried muscle phenomenon, the normal use of barrier film can not be affected, improve rolling efficiency.
Description
Technical field
The utility model belongs to lithium ion battery separator plant-scale equipment technical field, relates to the special tube core of one of lithium ion battery separator winding stress relief.
Background technology
Lithium ion battery separator take ultra-high molecular weight polyethylene as raw material, make through melting, cooling, stretching, heat treatment, rolling, can deformation be there is under external force in general polymer film, so lithium ion battery separator in wrapup procedure because can deformation be there is in the reason of tension force, overtension, the internal stress of barrier film can not effectively discharge, cause the diaphragm failures on tube core body, as there is sudden and violent muscle etc., impact uses, if winding tension is too small, there will be loose winding phenomenon, barrier film can come off from tube core body, and impact uses, and rolling efficiency is lower.
Summary of the invention
The utility model is in order to overcome the defect of prior art, devise the special tube core of one of lithium ion battery separator winding stress relief, deformation can not be there is in barrier film because of overtension, so neither affect the characteristic of barrier film, also not easily there is quick-fried muscle phenomenon, the normal use of barrier film can not be affected, improve rolling efficiency.
The concrete technical scheme that the utility model adopts is: the special tube core of one of lithium ion battery separator winding stress relief, comprise the tube core body that cross-sectional plane is annular arrangement, key is: set up elastomer layer at the outside face of tube core body, elastomer layer is the laminar texture be made up of elastomeric material, the inside face of elastomer layer is fixedly connected with the outside face of tube core body, and the height of elastomer layer equals the height of tube core body.
The shape of cross section of described elastomer layer is semi-circular or annular arrangement.
The thickness of described elastomer layer is 5 ~ 10mm.
Described elastomer layer be by the elastomer unit of multiple strip shape arrange at equal intervals around, all elastomer units are all arrange along short transverse.
The beneficial effects of the utility model are: use the special tube core of band elastomer layer to carry out rolling, the tension force that barrier film produces is absorbed by elastomeric material, the internal stress of barrier film is discharged, deformation would not be there is in such barrier film because of overtension, so neither affect the characteristic of barrier film, also not easily there is quick-fried muscle phenomenon, the normal use of barrier film can not be affected, improve rolling efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model first embodiment.
Fig. 2 is the structural representation of the utility model second embodiment.
In accompanying drawing, 1 represents tube core body, and 2 represent elastomer layer.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated:
Embodiment 1, as shown in Figure 1, the special tube core of one of lithium ion battery separator winding stress relief, comprise the tube core body 1 that cross-sectional plane is annular arrangement, the material of tube core body 1 is paper, plastics or steel, elastomer layer 2 is set up at the outside face of tube core body 1, elastomer layer 2 is the laminar textures be made up of elastomeric material polyurethane or nylon, the inside face of elastomer layer 2 is fixedly connected with the outside face of tube core body 1, the height of elastomer layer 2 equals the height of tube core body 1, the shape of cross section of elastomer layer 2 is semi-circular, the thickness of elastomer layer 2 is 5 ~ 10mm, elastomer layer 2 be by the elastomer unit of multiple strip shape arrange at equal intervals around, all elastomer units are all arrange along short transverse.
Embodiment 2, as shown in Figure 2, the shape of cross section of elastomer layer 2 is annular arrangement as different from Example 1, better to the assimilation effect of tension force.
Principle of work of the present utility model is: the tension force that barrier film produces is absorbed by elastomeric material, the internal stress of barrier film is discharged, deformation would not be there is in such barrier film because of overtension, so neither affect the characteristic of barrier film, also not easily there is quick-fried muscle phenomenon, the normal use of barrier film can not be affected, improve rolling efficiency.In addition, barrier film because molecular motion (creep) can produce internal stress equally, causes barrier film generation deformation in storage process, and this special tube core also can absorb the internal stress produced in storage process, barrier film internal stress is discharged, increases the storage time of more than 1 year barrier film.
Claims (4)
1. the special tube core of the one of lithium ion battery separator winding stress relief, comprise the tube core body (1) that cross-sectional plane is annular arrangement, it is characterized in that: set up elastomer layer (2) at the outside face of tube core body (1), elastomer layer (2) is the laminar texture be made up of elastomeric material, the inside face of elastomer layer (2) is fixedly connected with the outside face of tube core body (1), and the height of elastomer layer (2) equals the height of tube core body (1).
2. the special tube core of one of lithium ion battery separator winding stress relief according to claim 1, is characterized in that: the shape of cross section of described elastomer layer (2) is semi-circular or annular arrangement.
3. the special tube core of one of lithium ion battery separator winding stress relief according to claim 1, is characterized in that: the thickness of described elastomer layer (2) is 5 ~ 10mm.
4. the special tube core of one of lithium ion battery separator winding stress relief according to claim 1, it is characterized in that: described elastomer layer (2) be by the elastomer unit of multiple strip shape arrange at equal intervals around, all elastomer units are all arrange along short transverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520196012.6U CN204508455U (en) | 2015-04-02 | 2015-04-02 | The special tube core of one of lithium ion battery separator winding stress relief |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520196012.6U CN204508455U (en) | 2015-04-02 | 2015-04-02 | The special tube core of one of lithium ion battery separator winding stress relief |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204508455U true CN204508455U (en) | 2015-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520196012.6U Active CN204508455U (en) | 2015-04-02 | 2015-04-02 | The special tube core of one of lithium ion battery separator winding stress relief |
Country Status (1)
| Country | Link |
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| CN (1) | CN204508455U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107170940A (en) * | 2017-04-24 | 2017-09-15 | 上海恩捷新材料科技股份有限公司 | The processing technology and process equipment of a kind of lithium battery isolation membrane |
| CN109384076A (en) * | 2017-08-09 | 2019-02-26 | 苏州捷力新能源材料有限公司 | The winding method of lithium battery diaphragm |
| CN111606096A (en) * | 2020-05-29 | 2020-09-01 | 湖南中锂新材料有限公司 | Winding process of lithium battery diaphragm |
| CN112850370A (en) * | 2020-12-31 | 2021-05-28 | 上海恩捷新材料科技有限公司 | Lithium battery diaphragm winding device and process |
-
2015
- 2015-04-02 CN CN201520196012.6U patent/CN204508455U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107170940A (en) * | 2017-04-24 | 2017-09-15 | 上海恩捷新材料科技股份有限公司 | The processing technology and process equipment of a kind of lithium battery isolation membrane |
| CN109384076A (en) * | 2017-08-09 | 2019-02-26 | 苏州捷力新能源材料有限公司 | The winding method of lithium battery diaphragm |
| CN111606096A (en) * | 2020-05-29 | 2020-09-01 | 湖南中锂新材料有限公司 | Winding process of lithium battery diaphragm |
| CN112850370A (en) * | 2020-12-31 | 2021-05-28 | 上海恩捷新材料科技有限公司 | Lithium battery diaphragm winding device and process |
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