CN202934801U - Chilled air curtain device for production line of lithium cell diaphragms - Google Patents
Chilled air curtain device for production line of lithium cell diaphragms Download PDFInfo
- Publication number
- CN202934801U CN202934801U CN2012205956323U CN201220595632U CN202934801U CN 202934801 U CN202934801 U CN 202934801U CN 2012205956323 U CN2012205956323 U CN 2012205956323U CN 201220595632 U CN201220595632 U CN 201220595632U CN 202934801 U CN202934801 U CN 202934801U
- Authority
- CN
- China
- Prior art keywords
- air curtain
- production line
- air
- curtain device
- exhaust vent
- 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.)
- Expired - Fee Related
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
Abstract
The utility model relates to a chilled air curtain device for a production line of lithium cell diaphragms. The chilled air curtain comprises an air curtain air pipe, a cross beam capable of being adjusted vertically, a locking piece for fixing the air curtain air pipe, a supporting column capable of being adjusted horizontally and a mounting support, wherein the air curtain air pipe can rotate around the center of the chilled air curtain device, air outlets are distributed on the air curtain air pipe and are symmetrically and uniformly distributed on the surface of the air curtain air pipe in a manner of being dense in the middle and sparse at two ends, and the bore diameters of the air outlets gradually become small from the middle to two ends. The chilled air curtain device has the benefits of simple structure, convenience in processing, easiness in installation and use, can ensure cooling degree of two surfaces of a basement membrane consistent when the basement membrane is attached onto a roll, and ensures that the basement membrane is cooled in time on the condition that the speed of the production line is quick.
Description
Technical field
The utility model relates to lithium battery production equipment technical field, especially a kind of cold wind air curtain device for lithium battery diaphragm production line.
Background technology
Lithium ion battery separator is a significant components in lithium ion battery, and it is a kind of thin-film material of porous, plays the effect that intercepts positive and negative electrode, prevents internal short-circuit of battery in battery; Simultaneously, it must allow ion current to pass through fast, guarantees the fast transport of lithium ion between positive and negative electrode in battery charge and discharge process.Therefore, battery diaphragm occupies very important status in the material of making battery, " third electrode " that is called as battery, just because of this important function of battery diaphragm, the exploitation of high performance lithium ion battery barrier film becomes the emphasis of battery production enterprise technology research.
At present the production method of industrialized lithium battery diaphragm comprises two kinds of thermally induced phase separation (dry method) and fusion drawn methods (wet method).Wet method is that polyolefin resin feedstock and low-molecular-weight material are mixed, and heating and melting through extruding the stretching film forming, then extracts lower-molecular substance with solvent, dry after the formation microporous barrier.Wet method need to be used a large amount of solvents, and environmental pollution is large, the technique relative complex, and equipment investment is larger.Dry method be with polyolefin melt in the heavily stressed slab of extruding after the match, the basement membrane of formation has the lamellar structure of vertically extruding direction and being arranged in parallel, basement membrane stretches after Overheating Treatment again, and platelet is separated, and forms microporous barrier.The process route of dry method is simple, rationally, equipment is uncomplicated, and product structure and Performance Ratio more excellent, product can be realized diversification.
The dry process film production equipment mainly comprises raw material processing system, extrusion system, slab system, tensioning system, traction winding system.The difficult point of this kind production technology is the accurate control to the basement membrane structure, realizes all even face quality stable of basement membrane structure.Usually take roll-type cooling when slab, but will realize that melt is slowly cooling and be not easy to control equably.Can there be two problems in diaphragm when pasting the roller cooling forming: 1, the melt of high temperature causes in the cooling degree varies of pasting roller latter two surface, has certain temperature contrast, and film can produce naturally curling to one side, thereby causes the difference of two surface textures of basement membrane; 2, because the melt temperature of extruding from die head is higher, guarantee again certain line speed, only depend on chill roll cooling still inadequate, easy roll banding after the subsides roller, the easy defective that produces face when peeling off.Above two problems all can produce harmful effect to follow-up filming technology, cause the defective of final products performance and outward appearance.
The utility model content
The technical problems to be solved in the utility model is: based on the problems referred to above, provide a kind of cold wind air curtain device for lithium battery diaphragm production line.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of cold wind air curtain device for lithium battery diaphragm production line, but comprise the crossbeam of air curtain airduct up-down adjustment, the fixedly locking member, support column and the erection support of left and right adjusting of air curtain airduct, the air curtain airduct is with the axle center rotation of cooling air curtain device, be distributed with exhaust vent on the air curtain airduct, dredge in the middle of air curtain airduct surface is exhaust vent arrange symmetrically and evenly by close two ends, and the aperture of exhaust vent diminishes from the middle to both ends successively.
Further, the aperture of exhaust vent is 1.0～1.2mm, is in the semi-molten state when die head is extruded due to basement membrane, so the blast of air curtain airduct inside is as far as possible little.
Further, exhaust vent is at least 2 rows.
The beneficial effects of the utility model are: simple in structure, easy to process, be easy to install and use, can guarantee that basement membrane two surface cool degree when pasting roller are consistent, guaranteed line speed faster in situation basement membrane obtain in time cooling.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of air curtain airduct.
Wherein: 1. air curtain airduct, 2. crossbeam, 3. locking member, 4. support column, 5. erection support, 6. exhaust vent.
The specific embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.
A kind of cold wind air curtain device for lithium battery diaphragm production line as shown in Figure 1, but comprise the crossbeam 2 of air curtain airduct 1 up-down adjustment, the fixedly locking member 3, support column 4 and the erection support 5 of left and right adjusting of air curtain airduct 1, air curtain airduct 1 is with the axle center rotation of cooling air curtain device.
Be distributed with exhaust vent 6 on air curtain airduct 1 as shown in Figure 2, dredge in the middle of air curtain airduct 1 surface is exhaust vent 6 arrange symmetrically and evenly by close two ends, and exhaust vent 6 is at least 2 rows.The aperture of exhaust vent 6 is 1.0～1.2mm, and the aperture that is positioned at the middle exhaust vent 6 of air curtain airduct 1 is 1.2mm, and the aperture diminishes successively from the middle to both ends, and the aperture that is positioned at the exhaust vent 6 at two ends is 1.0mm.
Take above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this utility model technological thought, carry out various change and modification fully.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to the claim scope.
Claims (3)
1. cold wind air curtain device that is used for lithium battery diaphragm production line, comprise air curtain airduct (1) but the crossbeam (2) of up-down adjustment, the fixedly locking member (3), support column (4) and the erection support (5) of left and right adjusting of air curtain airduct (1), air curtain airduct (1) is with the axle center rotation of cooling air curtain device, it is characterized in that: be distributed with exhaust vent (6) on described air curtain airduct (1), dredge in the middle of air curtain airduct (1) surface is described exhaust vent (6) arrange symmetrically and evenly by close two ends, and the aperture of exhaust vent (6) diminishes from the middle to both ends successively.
2. the cold wind air curtain device for lithium battery diaphragm production line according to claim 1, it is characterized in that: the aperture of described exhaust vent (6) is 1.0～1.2mm.
3. the cold wind air curtain device for lithium battery diaphragm production line according to claim 1 is characterized in that: described exhaust vent (6) is at least 2 rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205956323U CN202934801U (en) | 2012-11-13 | 2012-11-13 | Chilled air curtain device for production line of lithium cell diaphragms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205956323U CN202934801U (en) | 2012-11-13 | 2012-11-13 | Chilled air curtain device for production line of lithium cell diaphragms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202934801U true CN202934801U (en) | 2013-05-15 |
Family
ID=48319060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205956323U Expired - Fee Related CN202934801U (en) | 2012-11-13 | 2012-11-13 | Chilled air curtain device for production line of lithium cell diaphragms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202934801U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111650A (en) * | 2016-07-26 | 2016-11-16 | 贵州钢绳股份有限公司 | A kind of air curtain blow pipe device for acid mist pump drainage and purification |
| CN110953853A (en) * | 2019-12-27 | 2020-04-03 | 航天建筑设计研究院有限公司阳泉航天材料应用技术分公司 | Material drying method and device |
-
2012
- 2012-11-13 CN CN2012205956323U patent/CN202934801U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111650A (en) * | 2016-07-26 | 2016-11-16 | 贵州钢绳股份有限公司 | A kind of air curtain blow pipe device for acid mist pump drainage and purification |
| CN110953853A (en) * | 2019-12-27 | 2020-04-03 | 航天建筑设计研究院有限公司阳泉航天材料应用技术分公司 | Material drying method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20131118 Granted publication date: 20130515 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20141118 Granted publication date: 20130515 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20131113 |