CN217373453U - Battery diaphragm stretching equipment - Google Patents
Battery diaphragm stretching equipment Download PDFInfo
- Publication number
- CN217373453U CN217373453U CN202123456991.9U CN202123456991U CN217373453U CN 217373453 U CN217373453 U CN 217373453U CN 202123456991 U CN202123456991 U CN 202123456991U CN 217373453 U CN217373453 U CN 217373453U
- Authority
- CN
- China
- Prior art keywords
- hot
- cold
- shaping
- devices
- rollers
- 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.)
- Active
Links
Images
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 provides a tensile equipment of battery diaphragm, includes unreels unit, cold drawing unit, hot drawing unit, design unit and the rolling unit of arranging according to the preface. Owing to have a plurality of setting devices, form the tensile equipment of diaphragm that the disconnect-type was stereotyped for can stereotype the effect difference of stereotyping when having avoided stereotyped to the individual layer membrane in the course of working, also save subsequent layering technology, reduce the rejection rate of finished product diaphragm, avoid great cost waste.
Description
Technical Field
The application relates to the technical field of battery diaphragm production, in particular to battery diaphragm stretching equipment.
Background
In the production process of the battery diaphragm in the prior art, the stretching equipment adopts a multi-layer centralized composite cold-drawing, hot-drawing and shaping mode to produce the diaphragm. During composite setting, the surface and inner layer films are degraded due to heat conduction, so that the surface and inner layer setting effects are different, and phenomena such as interlayer adhesion, wire drawing, film breaking and the like are easy to occur in the subsequent layering process. The rejection rate of the diaphragm produced by the existing diaphragm production equipment is high, and the cost waste is large.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, an embodiment of the present application provides a battery separator stretching apparatus.
According to a first aspect of the present application, there is provided in one embodiment a battery separator stretching apparatus comprising:
the uncoiling unit, the cold drawing unit, the hot drawing unit, the shaping unit and the coiling unit are arranged in sequence;
the unwinding unit comprises a plurality of unwinding devices, and the unwinding devices are used for unwinding the membranes;
the cold drawing unit comprises a cold drawing device, the cold drawing device comprises a plurality of cold drawing rollers, and the cold drawing device is used for cold drawing the diaphragm;
the hot drawing unit comprises a hot drawing device, the hot drawing device comprises a plurality of hot drawing rollers, and a plurality of membranes subjected to cold drawing by the cold drawing device are compounded to form a composite membrane which enters the hot drawing device to be subjected to hot drawing;
the shaping unit comprises a plurality of shaping devices, each shaping device comprises a plurality of shaping rollers, and the composite diaphragm which is subjected to hot stretching by the hot stretching device is stripped into single-layer diaphragms which then respectively enter the corresponding shaping devices to complete shaping;
the winding unit comprises a plurality of winding devices, the number of the winding devices is not less than that of the shaping devices, and the winding devices are used for winding up the membranes after shaping.
In one embodiment, the setting speed ratio of the setting device is 0.7-1.0.
In one embodiment, the number of sizing rollers is 2, 4 or 6, and the membrane passes through all the sizing rollers in an S-shape.
In one embodiment, a shaping press roller is arranged outside part of the shaping roller, and a gap is formed between the shaping roller and the shaping press roller for a diaphragm to pass through.
In an embodiment, the cold drawing unit includes a plurality of cold drawing devices, the number of the cold drawing devices is not less than the number of the unreeling devices, and the number of the sizing devices is not less than the number of the cold drawing devices; and compounding the plurality of membranes subjected to cold stretching by the plurality of cold stretching devices to form a composite membrane, and allowing the composite membrane to enter the hot stretching device for hot stretching.
In one embodiment, the cold drawing device has a cold drawing speed ratio of 1.2-1.5.
In one embodiment, the number of said cold-drawing rollers is 2, 4 or 6, the membrane passing through all said cold-drawing rollers in an S-shape.
In one embodiment, a cold-pressing roller is arranged on the outer side of part of the cold-drawing roller, and a gap is formed between the cold-drawing roller and the cold-pressing roller for a diaphragm to pass through.
In one embodiment, the hot-drawing device has a hot-drawing speed ratio of 2.0-3.0.
In one embodiment, the number of the hot-drawing rollers is 2, 4 or 6, the diaphragm passes through all the hot-drawing rollers in an S shape, a hot-pressing roller is arranged on the outer side of part of the hot-drawing rollers, a gap is formed between the hot-drawing rollers and the hot-pressing rollers for the composite diaphragm to pass through, and the temperatures of the hot-drawing rollers and the hot-pressing rollers are the same.
According to the battery diaphragm stretching equipment of the embodiment, the battery diaphragm stretching equipment is provided with the plurality of shaping devices, so that a single-layer film can be shaped in the processing process, the shaping effect difference is avoided when shaping is carried out, the subsequent layering process is also omitted, the rejection rate of finished product diaphragms is reduced, and the great cost waste is avoided.
Drawings
FIG. 1 is a schematic diagram of a prior art battery separator stretching apparatus;
fig. 2 is a schematic structural diagram of a battery separator stretching apparatus in one embodiment.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operation steps involved in the embodiments may be interchanged or modified in order as will be apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of description of certain embodiments and are not intended to necessarily refer to a required composition and/or order.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified.
The existing battery diaphragm stretching equipment adopts a multilayer centralized composite cold-drawing, hot-drawing and shaping mode to produce diaphragms, as shown in figure 1, in the diaphragm stretching equipment in the prior art, a plurality of single-layer diaphragms are discharged from an unreeling unit 1, the plurality of single-layer diaphragms are converged and compounded into a composite diaphragm, the composite diaphragm enters a cold-drawing unit 2 to be subjected to composite cold-drawing, the composite diaphragm enters a hot-drawing unit 3 to be subjected to composite hot-drawing after the composite cold-drawing is finished, the composite diaphragm enters a shaping unit 4 to be subjected to composite shaping after the composite hot-drawing is finished, a composite finished product diaphragm obtained after the shaping is finished is collected by a reeling unit 5, and secondary layering is performed in subsequent processes. During composite setting, the surface and inner layer films are degraded due to heat conduction, so that the surface and inner layer setting effects are different, and phenomena such as interlayer adhesion, wire drawing and film breaking are easy to occur in the subsequent secondary layering process. The diaphragm rejection rate of current diaphragm production facility production is high, and the cost is extravagant great, and consequently, the inventor has provided a neotype battery diaphragm tensile equipment, has a plurality of setting devices, forms the diaphragm tensile equipment that the disconnect-type was stereotyped for can stereotype when having avoided stereotypeing to the individual layer membrane in the course of working and stereotype the effect difference, also saved subsequent layering technology, reduced the rejection rate of finished product diaphragm, avoid great cost extravagant.
The present application will be described below with reference to specific examples.
The first embodiment is as follows:
as shown in fig. 2, an embodiment of the present application provides a battery separator stretching apparatus, which includes an unwinding unit 1, a cold drawing unit 2, a hot drawing unit 3, a shaping unit 4, and a winding unit 5, which are sequentially arranged. The diaphragm that unreels unit 1 and emit accomplishes drawing and stereotype through cold drawing unit 2, hot drawing unit 3, design unit 4 in proper order, and the diaphragm after the rolling unit 5 will stereotype is packed up. The unwinding unit 1 includes a plurality of unwinding devices 11, and the unwinding devices 11 are used to unwind the separator 100. The cold drawing unit 2 comprises a cold drawing device 21, the cold drawing device 21 comprises a plurality of cold drawing rollers 211, the diaphragm 100 sequentially passes through all the cold drawing rollers 211, and the speed difference between the cold drawing rollers 211 forms the drawing of the diaphragm 100 to complete the cold drawing. The hot drawing unit 3 includes a hot drawing device 31, the hot drawing device 31 includes a plurality of hot drawing rollers 311, the plurality of membranes 100 cold drawn by the cold drawing device 21 are gathered and combined to form the composite membrane 200, the composite membrane 200 sequentially passes through all the hot drawing rollers 311, a speed difference exists between the hot drawing rollers 311, the speed difference forms a drawing of the composite membrane 200 to complete the hot drawing, and in some embodiments, the combination of the membranes 100 can be completed before the cold drawing. The shaping unit 4 includes a plurality of shaping devices 41, the shaping devices 41 include a plurality of shaping rollers 411, the composite membrane 200 thermally stretched by the thermal stretching device 31 is peeled into single-layer membranes 100, and then the single-layer membranes 100 enter the corresponding shaping devices 41, and the membranes 100 sequentially pass through all the shaping rollers 411 to complete thermal shaping. The winding unit 5 comprises a plurality of winding devices 51, the winding devices 51 are used for winding up the shaped diaphragm 100, and the number of the winding devices 51 is not less than that of the shaping devices 41. Those skilled in the art can understand that the unwinding device 11 and the winding device 51 in the present embodiment may use existing devices in the prior art, and may also use future devices, which are not limited herein.
In this embodiment, the setting speed ratio of the setting device 41 is 0.7-1.0.
The number of sizing rollers 411 in a single sizing device 41 is 2, 4 or 6 and the membrane 100 passes through all the sizing rollers 411 in an S-shape, in this embodiment the number of sizing rollers in a single sizing device 41 is 6.
In this embodiment, in order to achieve a better shaping effect, a shaping pressing roller 412 is disposed outside a part of the shaping roller 411, a gap is formed between the shaping roller 411 and the shaping pressing roller 412 for the diaphragm 100 to pass through, and the shaping pressing roller 412 presses the diaphragm 100, so that the diaphragm 100 and the shaping roller 411 are in closer contact to achieve a better shaping effect.
In this embodiment, the cold drawing unit 2 includes a plurality of cold drawing devices 21, the number of the cold drawing devices 21 is not less than the number of the unwinding devices 11, the number of the sizing devices 41 is not less than the number of the cold drawing devices 21, and a plurality of diaphragms 100 respectively stretched by the plurality of cold drawing devices 21 are gathered and combined to form a composite diaphragm 200, and the composite diaphragm 200 enters the hot drawing device 31 for hot drawing.
In this embodiment, the cold drawing speed ratio of the cold drawing device 21 is 1.2-1.5.
The number of cold drawing rolls 211 in a single cold drawing device 21 is 2, 4 or 6, and the diaphragm 100 passes through all the cold drawing rolls 211 in an S-shape, and in this embodiment, the number of cold drawing rolls 211 in a single cold drawing device 21 is 6.
In this embodiment, in order to achieve a better cold drawing effect, the cold drawing roller 212 is arranged outside a part of the cold drawing roller 211, a gap is formed between the cold drawing roller 211 and the cold drawing roller 212 for the diaphragm 100 to pass through, and the cold drawing roller 212 presses the diaphragm 100, so that the diaphragm 100 and the cold drawing roller 211 are in closer contact to form more effective drawing, and a better cold drawing effect is achieved.
In the present embodiment, the hot drawing device 31 has hot drawing ratios of 2.0 and 3.0.
The number of hot-drawing rolls 311 in a single hot-drawing device 31 is 2, 4 or 6, and the composite separator 200 passes through all the hot-drawing rolls 311 in an S-shape, and in this embodiment, the number of hot-drawing rolls 311 in a single hot-drawing device 31 is 6.
In this embodiment, in order to achieve a better hot drawing effect, a hot pressing roller 312 is disposed outside a part of the hot drawing roller 311, a gap is provided between the hot drawing roller 311 and the hot pressing roller 312 for the composite membrane 200 to pass through, and the hot pressing roller 312 presses the composite membrane 200, so that the composite membrane 200 and the hot drawing roller 311 are in closer contact to form more effective drawing, thereby achieving a better hot drawing effect. Meanwhile, since the composite membrane 200 is thicker, in this embodiment, the temperature of the hot-pressing roller 312 is the same as that of the hot-drawing roller 311, so that the composite membrane 200 is heated more uniformly.
Those skilled in the art can understand that different numbers of unwinding devices 11, cold drawing devices 21, shaping devices 41 and winding devices 51, different cold drawing speed ratios, different hot drawing speed ratios and different shaping speed ratios can be set according to different processing conditions and requirements to adapt to different processing conditions or meet different processing requirements.
According to the battery diaphragm stretching equipment in the embodiment, due to the fact that the battery diaphragm stretching equipment is provided with the plurality of cold drawing devices and the shaping device, single-layer films can be subjected to cold drawing and shaping in the processing process, the defects of creasing, dead folding, bright lines and the like in the cold drawing process are avoided, the shaping effect is different when the shaping is also avoided, the subsequent layering process is also omitted, the rejection rate of finished product diaphragms is reduced, and the great cost waste is avoided.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical personnel in the technical field of the utility model, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replace.
Claims (10)
1. A battery separator stretching apparatus, comprising:
the uncoiling unit, the cold drawing unit, the hot drawing unit, the shaping unit and the coiling unit are arranged in sequence;
the unwinding unit comprises a plurality of unwinding devices, and the unwinding devices are used for unwinding the membranes;
the cold drawing unit comprises a cold drawing device, the cold drawing device comprises a plurality of cold drawing rollers, and the cold drawing device is used for cold drawing of the diaphragm;
the hot drawing unit comprises a hot drawing device, the hot drawing device comprises a plurality of hot drawing rollers, and a plurality of membranes subjected to cold drawing by the cold drawing device are compounded to form a composite membrane which enters the hot drawing device to be subjected to hot drawing;
the shaping unit comprises a plurality of shaping devices, each shaping device comprises a plurality of shaping rollers, and the composite diaphragm which is subjected to hot stretching by the hot stretching device is stripped into single-layer diaphragms which then respectively enter the corresponding shaping devices to complete shaping;
the winding unit comprises a plurality of winding devices, the number of the winding devices is not less than that of the shaping devices, and the winding devices are used for winding up the membranes after shaping.
2. The battery separator stretching apparatus according to claim 1, wherein the setting speed ratio of the setting device is 0.7 to 1.0.
3. The battery separator stretching apparatus as claimed in claim 2, wherein the number of the sizing rollers is 2, 4 or 6, and the separator passes through all the sizing rollers in an S-shape.
4. The battery diaphragm drawing device according to claim 3, wherein a shaping press roller is arranged outside part of the shaping roller, and a gap is formed between the shaping roller and the shaping press roller for the diaphragm to pass through.
5. The battery separator stretching apparatus according to claim 1, wherein the cold drawing unit includes a plurality of cold drawing devices, the number of the cold drawing devices is not less than the number of the unwinding devices, and the number of the sizing devices is not less than the number of the cold drawing devices; and compounding a plurality of membranes subjected to cold drawing by the cold drawing devices to form a composite membrane, and allowing the composite membrane to enter the hot drawing device for hot drawing.
6. The battery separator stretching apparatus according to claim 5, wherein a cold drawing speed ratio of the cold drawing device is 1.2 to 1.5.
7. The battery separator stretching apparatus of claim 6, wherein the number of said cold-drawing rolls is 2, 4 or 6, and the separator passes through all of said cold-drawing rolls in an S-shape.
8. The battery separator stretching device according to claim 7, wherein a cold-pressing roller is arranged outside part of the cold-pressing rollers, and a gap is formed between the cold-pressing rollers and the cold-pressing rollers for the separator to pass through.
9. The battery separator stretching apparatus according to claim 1, wherein the thermal stretching device has a thermal stretching ratio of 2.0 to 3.0.
10. The battery separator stretching apparatus as claimed in claim 9, wherein the number of the hot-drawing rollers is 2, 4 or 6, the separator passes through all the hot-drawing rollers in an S-shape, a hot-pressing roller is provided outside a part of the hot-drawing rollers, a gap is provided between the hot-drawing rollers and the hot-pressing roller for the composite separator to pass through, and the hot-drawing rollers and the hot-pressing rollers have the same temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123456991.9U CN217373453U (en) | 2021-12-28 | 2021-12-28 | Battery diaphragm stretching equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123456991.9U CN217373453U (en) | 2021-12-28 | 2021-12-28 | Battery diaphragm stretching equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217373453U true CN217373453U (en) | 2022-09-06 |
Family
ID=83096673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123456991.9U Active CN217373453U (en) | 2021-12-28 | 2021-12-28 | Battery diaphragm stretching equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217373453U (en) |
-
2021
- 2021-12-28 CN CN202123456991.9U patent/CN217373453U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102017218256A1 (en) | Apparatus and method for manufacturing a membrane electrode assembly for a fuel cell | |
| CN111231359A (en) | Battery diaphragm, and production method and production equipment of battery diaphragm | |
| CN211165717U (en) | Aluminum-plastic composite film for lithium battery packaging | |
| CN217373453U (en) | Battery diaphragm stretching equipment | |
| CN205836043U (en) | A kind of multilamellar many film roll lithium battery diaphragm burning optimization on line hybrid system | |
| CN212648292U (en) | Preparation system of membrane electrode | |
| CN103165237A (en) | Halogen-free flame-retardant copper-plastic composite belt and preparation thereof | |
| CN109501221B (en) | Polypropylene is from type membrane secondary stretching device | |
| CN209794611U (en) | Preparation system and oven of high uniformity diaphragm | |
| CN206388791U (en) | A kind of production facility | |
| CN101863188A (en) | Holographic transfer printing process | |
| CN103165224A (en) | Copper plastic composite strap suitable for telecommunication cable and optical cable and preparation method of copper plastic composite strap | |
| CN211542359U (en) | Novel MDO tensile structure | |
| CN113054154B (en) | Hot press molding method and hot press molding device for pole piece | |
| CN114361709A (en) | One-way stretching wire for battery diaphragm | |
| CN211000445U (en) | Coating machine with connecting line printing function | |
| CN212499057U (en) | Production equipment for battery diaphragm | |
| CN203543285U (en) | Rubber cover laminating device of conveyer belt | |
| CN112429569A (en) | Winding and unwinding mechanism of two-roller calender for calendering polytetrafluoroethylene composite material | |
| CN219106243U (en) | Film-making composite device and winding system | |
| CN212499359U (en) | Flexible copper-clad plate laminating machine | |
| CN214927260U (en) | Foaming sheet does not have online automatic tectorial membrane apparatus for producing of glue | |
| CN215397534U (en) | High-transparency high-temperature composite material production equipment | |
| CN114374053B (en) | Preparation method and application of double-layer polymer diaphragm | |
| CN210062015U (en) | Electrothermal film composite device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |