CN205141086U - A roll up core for rolling lithium battery diaphragm - Google Patents
A roll up core for rolling lithium battery diaphragm Download PDFInfo
- Publication number
- CN205141086U CN205141086U CN201520619581.7U CN201520619581U CN205141086U CN 205141086 U CN205141086 U CN 205141086U CN 201520619581 U CN201520619581 U CN 201520619581U CN 205141086 U CN205141086 U CN 205141086U
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- China
- Prior art keywords
- lithium battery
- battery diaphragm
- core
- resilient coating
- rolling
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a roll up core for rolling lithium battery diaphragm, which comprises a body, the body is the column body, the body is provided with the buffer layer outward. The utility model discloses simple structure, can the effectual lithium battery diaphragm of preventing accomodate and the storing process in warp and collapse, improved unfamiliar surfacing nature.
Description
Technical field
The utility model relates to a kind of core, is in particular a kind of core for rolling lithium battery diaphragm.
Background technology
At present, along with the extensive use of power vehicle in life, the appearance of larger amt connection in series-parallel battery pack, consistency and the security performance of lithium ion battery receive much concern, then more and more higher as the requirement of barrier film to the fail safe of lithium ion battery cutting off positive and negative pole material in lithium ion battery, especially after " GB31241-2014 portable type electronic product lithium ion battery and battery pack safety requirements " is implemented, Compulsory Feature lithium ion battery can by high-temperature behavior and internal short-circuit performance test, as thermal shock and heavy impact performance.Under the resistance to elevated temperatures of barrier film and high temperature, the physical property such as dimensional integrity receives much concern thus.For improving dimensional integrity under the high-temperature behavior of barrier film or high temperature, industry mainstream technology is mainly through applying one deck and have resistant to elevated temperatures inorganic matter or organic substance coating realizing at membrane surface.Because lithium ion battery separator has the hole of about 40%, under the condition adopting conventional refill rolling, through transporting or placing for a long time, especially under being in hot and humid weather, due to expanding with heat and contract with cold of air in the material of barrier film own and hole, and the reason such as tension force release, easily there is the unfavorable condition such as turned-down edge and distortion in barrier film, cause follow-up coating waste water easily to produce the situations such as holiday, even cause scrapping of entire volume barrier film in coating process.
Utility model content
Utility model object: the purpose of this utility model is to solve above the deficiencies in the prior art, a kind of core for rolling lithium battery diaphragm is provided, it can slow down in wrapup procedure because tension force and pressure impact barrier film, also can ensure in longer-term storage simultaneously, especially comparatively large or that temperature the is higher condition of the temperature difference slow down so that avoid barrier film to expand with heat and contract with cold and tension force to discharge the turned-down edge brought and distortion etc. bad.
Technical scheme: a kind of core for rolling lithium battery diaphragm described in the utility model, comprises body, and described body is column, and described body peripheral is provided with resilient coating.
Further, described body is cylinder.
Further, described body is hollow.
Further, described resilient coating is any one in foamed plastics, foam, air-cushion film, bulk material.
Further, described foamed material is any one in polystyrene foam plastics, polyethylene foams, polyurethane foam plastics, Vestolit.
Further, described resilient coating is a tubular structure, is enclosed within body.
Described resilient coating is a quadrangular plan structure further, is wrapped on body.
Beneficial effect: general ion battery barrier film has the porosity of about 40%, microscopic appearance presents network structure (as shown in Figure 1), due to the effect of tension force and pressure during rolling, network structure there will be certain distortion, especially when barrier film entirety exists certain thickness difference, barrier film is more easily caused to occur the situation of distortion and turned-down edge, when adopting padded coaming, because padded coaming can prior to barrier film generation deformation, can delay and avoid barrier film to occur the situation of distortion, be conducive to the face planarization improving barrier film; Simultaneously with the lithium ion battery separator of padded coaming in long-term put procedure, due to expand with heat and contract with cold at barrier film or tension force release time padded coaming deformation change prior to barrier film, can effectively slow down and the situation of the distortion of avoiding barrier film to occur and turned-down edge.
Accompanying drawing explanation
Fig. 1 is the first embodiment structural representation of the utility model,
Fig. 2 is the utility model the second embodiment structural representation.
Wherein, 10, body, 11, resilient coating.
Embodiment
In order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, and this embodiment, only for explaining the utility model, does not form the restriction to the utility model protection range.
See Fig. 1, comprise the body 10 of hollow cylindrical in the present embodiment, the resilient coating 11 of the periphery setting of body 10, described resilient coating 11 is a quadrangular plan structure, is wrapped on body 10, and described resilient coating 11 is polystyrene foam plastics.In the present embodiment, resilient coating 11 is bonded on body 10 by glue, certainly also by other modes, such as, uses adhesive tape etc. to be banded on body 10.Described resilient coating 11 does not cover on body 10 completely in the present embodiment, certainly, can adopt the wrapped body 10. covered completely yet
See Fig. 2, comprise the body 10 of hollow cylindrical in the present embodiment, the resilient coating 11 of the periphery setting of body 10, described resilient coating 11 is tubular structure, can directly be enclosed within cylindrical body 10, and described resilient coating 11 is poly-polyurethane foam plastics.
As further improvement of this embodiment, described resilient coating 11 can adopt other foamed plastics, such as polyurethane foam plastics, Vestolit, or foam, air-cushion film, bulk material.Certainly, resilient coating 11 is arranged on the mode on body 10, both can be as the first embodiment is wrapped on body 10, also can adopt as the second embodiment is enclosed within body 10.
Implementation result:
Experimental group 1
Use polystyrene foam as the core for rolling lithium battery diaphragm of resilient coating, described resilient coating utilizes adhesive sticker to be bonded on body, rolling cut after lithium battery diaphragm.
Experimental group 2:
Use polystyrene foam as the core for rolling lithium battery diaphragm of resilient coating, described resilient coating is enclosed within body, rolling cut after lithium battery diaphragm.
Experimental group 3:
Use polyurethane foam plastics as the core for rolling lithium battery diaphragm of resilient coating, described resilient coating is enclosed within body, rolling cut after lithium battery diaphragm.
Control group 1:
Use the volume heart that resilient coating is not set, the lithium battery diaphragm after cutting for rolling.
Experimental procedure:
A. by the lithium battery diaphragm after above-mentioned rolling, (day temperature is 40 DEG C, and evening, temperature was 33 DEG C) 48h in the warehouse of general non-control temperature is placed on;
B. the lithium battery diaphragm after storing is used Shanghai Enjie New Material Technology Co., Ltd.'s application number be 201420623700.1 patent " a kind of face device for detecting deformation " measure distortion in above-mentioned example and turned-down edge situation.
Table 1 experimental result
By test comparison, adopt the lithium battery diaphragm being provided with the core rolling of resilient coating, its structure is significantly better than the lithium battery diaphragm only adopting conventional refill rolling.
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 (4)
1. for a core for rolling lithium battery diaphragm, it is characterized in that: comprise body, described body is cylinder, and described body peripheral is provided with resilient coating, and described resilient coating tubular structure is enclosed within body or a quadrangular plan structure, is wrapped on body.
2. a kind of core for rolling lithium battery diaphragm according to claim 1, is characterized in that: described body is hollow.
3. a kind of core for rolling lithium battery diaphragm according to claim 1, is characterized in that: described resilient coating is any one in foamed plastics, foam, air-cushion film, bulk material.
4. a kind of core for rolling lithium battery diaphragm according to claim 3, is characterized in that: described foamed plastics is any one in polystyrene foam plastics, polyethylene foams, polyurethane foam plastics, Vestolit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619581.7U CN205141086U (en) | 2015-08-17 | 2015-08-17 | A roll up core for rolling lithium battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619581.7U CN205141086U (en) | 2015-08-17 | 2015-08-17 | A roll up core for rolling lithium battery diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205141086U true CN205141086U (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520619581.7U Active CN205141086U (en) | 2015-08-17 | 2015-08-17 | A roll up core for rolling lithium battery diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205141086U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592518A (en) * | 2018-11-21 | 2019-04-09 | 昆山鑫盛塑料工业有限公司 | A kind of production method of foam core pipe |
| CN112441460A (en) * | 2020-11-19 | 2021-03-05 | 江苏厚生新能源科技有限公司 | Novel large slitting system and process for reducing rolling deformation |
| CN113120347A (en) * | 2019-12-30 | 2021-07-16 | 昊佰电子科技（上海）有限公司 | Production and processing method of sponge roll core |
| 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 |
-
2015
- 2015-08-17 CN CN201520619581.7U patent/CN205141086U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592518A (en) * | 2018-11-21 | 2019-04-09 | 昆山鑫盛塑料工业有限公司 | A kind of production method of foam core pipe |
| CN113120347A (en) * | 2019-12-30 | 2021-07-16 | 昊佰电子科技（上海）有限公司 | Production and processing method of sponge roll core |
| CN112441460A (en) * | 2020-11-19 | 2021-03-05 | 江苏厚生新能源科技有限公司 | Novel large slitting system and process for reducing rolling deformation |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 201399 No. 155 Nanlu Highway, Pudong New Area, Shanghai Patentee after: SHANGHAI ENJIE NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: No. 155 Nanlu Highway, Pudong New Area, Shanghai, 200120 Patentee before: SHANGHAI ENERGY NEW MATERIALS TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230323 Address after: No. 125, Zhongxing North Road, Jintan District, Changzhou City, Jiangsu Province, 213200 Patentee after: Jiangsu Enjie New Material Technology Co.,Ltd. Address before: 201399 No. 155 Nanlu Highway, Pudong New Area, Shanghai Patentee before: SHANGHAI ENJIE NEW MATERIAL TECHNOLOGY Co.,Ltd. |