CN204054687U - A kind of burning optimization on line device being applicable to lithium battery diaphragm and producing - Google Patents
A kind of burning optimization on line device being applicable to lithium battery diaphragm and producing Download PDFInfo
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- CN204054687U CN204054687U CN201420457308.4U CN201420457308U CN204054687U CN 204054687 U CN204054687 U CN 204054687U CN 201420457308 U CN201420457308 U CN 201420457308U CN 204054687 U CN204054687 U CN 204054687U
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Abstract
The utility model relates to the technical field of annealing device, especially a kind of burning optimization on line device being applicable to lithium battery diaphragm and producing, primarily of the unreeling structure that film passes through successively in heat treatment process, preheating mechanism, heat treatment mechanism, cooling body and rolling-up mechanism composition, described preheating mechanism comprises multiple preheat roll be evenly interspersed, described heat treatment mechanism comprises multiple guide roller of distributing symmetrically and to be positioned in the middle of guide roller and staggered aspiration channel and blower, described cooling body comprises multiple chill roll be evenly interspersed.This burning optimization on line device, is applicable to dry method simple tension technique, carries out burning optimization on line to polypropylene basement membrane, and whole heat treatment process is very even, improves the stability of each batch thermal film properties, meets large-scale industrial production requirement.
Description
Technical field
The utility model relates to the technical field of annealing device, especially a kind of burning optimization on line device being applicable to lithium battery diaphragm and producing.
Background technology
With in the technology of dry method simple tension explained hereafter polypropylene lithium battery diaphragm, melt polypropylene forms the hard elastics film had perpendicular to extruding direction, lamellar structure arranged in parallel under high magnification stretches through curtain coating operation.Under certain temperature conditions, hard elastics film is heat-treated the platelet defect eliminated in film, make lamellar structure more perfect, and improve the thickness of platelet.
In all workshop sections producing polypropylene diaphragm, the stability of heat treatment step on the product quality of barrier film has larger impact.Heat treatment heterogeneity can have an impact to technical indicators such as the porosity of barrier film, pore-size distribution, intensity, thus causes in performance, producing certain otherness between each batch of product.
At present, the domestic heat treatment to polypropylene basement membrane mainly adopts clearance-type heat treatment, film is rolled in large-scale baking oven the mode carrying out heating and carries out.Adopt this Technology for Heating Processing, technique is simple, equipment investment is little advantage that it has.But discontinuous due to heat treatment process, and the heterogeneity in temperature field in baking oven, be difficult to ensure the stable of each batch thermal film properties.In addition, because polyacrylic thermal conductivity factor is less, use clearance-type process of thermal treatment to need stablizing for a long time with guaranteed performance, be difficult to meet large-scale production requirement.
Summary of the invention
The technical problems to be solved in the utility model is: the utility model provides a kind of burning optimization on line device being applicable to lithium battery diaphragm and producing, and overcomes the problem of the unstable properties such as film crystal unity, lamellae thickness, hot strength, rebound degree in prior art existing for the heat treatment of polypropylene clearance-type.
The utility model solves the technical scheme that its technical problem adopts: a kind of burning optimization on line device being applicable to lithium battery diaphragm and producing, primarily of the unreeling structure that film passes through successively in heat treatment process, preheating mechanism, heat treatment mechanism, cooling body and rolling-up mechanism composition, described preheating mechanism comprises multiple preheat roll be evenly interspersed, described heat treatment mechanism comprises multiple guide roller of distributing symmetrically and to be positioned in the middle of guide roller and staggered aspiration channel and blower, described cooling body comprises multiple chill roll be evenly interspersed.
In order to improve film thermal treatment effeciency, film surface quality, and the wrinkle eliminated in film traveling process, therefore be connected with the transition of arc planishing roller by dancer between described unreeling structure and preheating mechanism, be connected with the transition of arc planishing roller by dancer between described cooling body and rolling-up mechanism.
In order to make polypropylene casting basement membrane to overlay on a pre-heating roll reposefully, so that polypropylene casting basement membrane successfully carries out the pre-heat treatment, therefore on described each preheat roll, equal pressing has pressure roller.
The beneficial effects of the utility model are: a kind of burning optimization on line device being applicable to lithium battery diaphragm and producing of the present utility model, be applicable to dry method simple tension technique, burning optimization on line is carried out to polypropylene basement membrane, by polypropylene basement membrane in advance through preheat roll preheating, again through warm-up mill heat treatment, eventually pass chill roll rolling after cooling, by preheating mechanism to the advanced row the pre-heat treatment of polypropylene basement membrane, avoid film shunk owing to heating up suddenly in heat treatment mechanism, the defects such as distortion, enter in heat treatment mechanism through the polypropylene basement membrane of the pre-heat treatment and heat-treat, by the aspiration channel that is interspersed and blower, ensure the homogeneity in temperature field in heat treatment mechanism, make whole heat treatment process very even, improve the degree of crystallinity of each batch thermal film, lamellae thickness, hot strength, the stability of the performances such as rebound degree, whole process is continuous, controlledly can meet large-scale industrial production requirement.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the air channel circulation schematic diagram of heat treatment mechanism.
In figure: 1, unreeling structure, 2, preheating mechanism, 2-1, preheat roll, 3, heat treatment mechanism, 3-1, guide roller, 3-2, aspiration channel, 3-3, blower, 4, cooling body, 4-1, chill roll, 5, rolling-up mechanism, 6, dancer, 7, arc planishing roller.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of burning optimization on line device being applicable to lithium battery diaphragm and producing as depicted in figs. 1 and 2, the unreeling structure 1, preheating mechanism 2, heat treatment mechanism 3, cooling body 4 and the rolling-up mechanism 5 that pass through successively in heat treatment process primarily of film form, preheating mechanism 2 comprises multiple preheat roll 2-1 be evenly interspersed, on each preheat roll 2-1, equal pressing has pressure roller, pressure roller makes polypropylene casting basement membrane to overlay reposefully on preheat roll 2-1, makes film can preheating uniformly.Heat treatment mechanism 3 comprises multiple guide roller 3-1 of distributing symmetrically and to be positioned in the middle of guide roller 3-1 and staggered aspiration channel 3-2 and blower 3-3, and cooling body 4 comprises multiple chill roll 4-1 be interspersed.
Wherein, be connected with arc planishing roller 7 transition by dancer 6 between unreeling structure 1 and preheating mechanism 2, be connected with arc planishing roller 7 transition by dancer 6 between cooling body 4 and rolling-up mechanism 5.Dancer 6 keeps thin film to have constant tension force, improves film thermal treatment effeciency and film surface quality.Arc planishing roller 7 is used for unfolding film, effectively eliminates the wrinkle in film traveling process.
The heat treatment process of this burning optimization on line device is:
Film is heated on polyacrylic vitrification point by polypropylene casting basement membrane after unreeling structure 1 unreels in preheating mechanism 2, again through heat treatment mechanism 3, heat-treat at the temperature of 140 DEG C, the aspiration channel 3-2 be interspersed by heat treatment mechanism 3 centre and blower 3-3, in guarantee heat treatment mechanism 3, temperature field is homogeneous, control the rolling speed of film, make film in heat treatment mechanism 3, maintain the heat treatment time of about 30min, after ensureing film thermal process, reach performance requirement.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to right.
Claims (3)
1. the burning optimization on line device being applicable to lithium battery diaphragm and producing, it is characterized in that: the unreeling structure (1) passed through successively in heat treatment process primarily of film, preheating mechanism (2), heat treatment mechanism (3), cooling body (4) and rolling-up mechanism (5) composition, described preheating mechanism (2) comprises multiple preheat roll (2-1) be evenly interspersed, described heat treatment mechanism (3) comprises multiple guide roller (3-1) of distributing symmetrically and to be positioned in the middle of guide roller (3-1) and staggered aspiration channel (3-2) and blower (3-3), described cooling body (4) comprises multiple chill roll (4-1) be evenly interspersed.
2. a kind of burning optimization on line device being applicable to lithium battery diaphragm and producing according to claim 1, it is characterized in that: be connected with arc planishing roller (7) transition by dancer (6) between described unreeling structure (1) and preheating mechanism (2), be connected with arc planishing roller (7) transition by dancer (6) between described cooling body (4) and rolling-up mechanism (5).
3. a kind of burning optimization on line device being applicable to lithium battery diaphragm and producing according to claim 1, is characterized in that: the upper equal pressing of described each preheat roll (2-1) has pressure roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420457308.4U CN204054687U (en) | 2014-08-13 | 2014-08-13 | A kind of burning optimization on line device being applicable to lithium battery diaphragm and producing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420457308.4U CN204054687U (en) | 2014-08-13 | 2014-08-13 | A kind of burning optimization on line device being applicable to lithium battery diaphragm and producing |
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| CN204054687U true CN204054687U (en) | 2014-12-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968696A (en) * | 2019-03-07 | 2019-07-05 | 武汉中兴创新材料技术有限公司 | A kind of preparation method and system of high consistency diaphragm |
| CN110202726A (en) * | 2019-07-10 | 2019-09-06 | 江苏安瑞达新材料有限公司 | Battery diaphragm baking oven device |
| CN111584796A (en) * | 2019-07-03 | 2020-08-25 | 河北金力新能源科技股份有限公司 | Composite coating diaphragm and preparation method and application thereof |
| CN113067094A (en) * | 2019-12-12 | 2021-07-02 | 上海恩捷新材料科技有限公司 | Low-internal-stress polyolefin microporous membrane for lithium ion battery and preparation method thereof |
| CN113871791A (en) * | 2021-08-25 | 2021-12-31 | 江西省通瑞新能源科技发展有限公司 | High-pressure-resistance diaphragm for lithium ion battery and preparation method thereof |
-
2014
- 2014-08-13 CN CN201420457308.4U patent/CN204054687U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968696A (en) * | 2019-03-07 | 2019-07-05 | 武汉中兴创新材料技术有限公司 | A kind of preparation method and system of high consistency diaphragm |
| CN111584796A (en) * | 2019-07-03 | 2020-08-25 | 河北金力新能源科技股份有限公司 | Composite coating diaphragm and preparation method and application thereof |
| CN110202726A (en) * | 2019-07-10 | 2019-09-06 | 江苏安瑞达新材料有限公司 | Battery diaphragm baking oven device |
| CN113067094A (en) * | 2019-12-12 | 2021-07-02 | 上海恩捷新材料科技有限公司 | Low-internal-stress polyolefin microporous membrane for lithium ion battery and preparation method thereof |
| CN113067094B (en) * | 2019-12-12 | 2022-10-11 | 上海恩捷新材料科技有限公司 | Low-internal-stress polyolefin microporous membrane for lithium ion battery and preparation method thereof |
| CN113871791A (en) * | 2021-08-25 | 2021-12-31 | 江西省通瑞新能源科技发展有限公司 | High-pressure-resistance diaphragm for lithium ion battery and preparation method thereof |
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