CN117059729A - Preparation device for dry electrode membrane - Google Patents
Preparation device for dry electrode membrane Download PDFInfo
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- CN117059729A CN117059729A CN202210483787.6A CN202210483787A CN117059729A CN 117059729 A CN117059729 A CN 117059729A CN 202210483787 A CN202210483787 A CN 202210483787A CN 117059729 A CN117059729 A CN 117059729A
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- 239000012528 membrane Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 238000009966 trimming Methods 0.000 claims description 37
- 238000004804 winding Methods 0.000 claims description 23
- 238000003825 pressing Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 4
- 238000010409 ironing Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4402—Guiding arrangements to control paying-out and re-storing of the material
- B65H75/4405—Traversing devices; means for orderly arranging the material on the drum
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/06—Electrodes for primary cells
- H01M4/08—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1133—Size of webs
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The application relates to a preparation device for a dry electrode membrane, which comprises a membrane forming mechanism, a thinning forming mechanism and a baking mechanism, wherein the membrane forming mechanism is used for preparing electrode powder into a membrane and guiding the membrane to the thinning forming mechanism, the thinning forming mechanism is arranged at the downstream of the membrane forming mechanism and used for thinning and forming the membrane, and the baking mechanism is arranged at the downstream of the thinning forming mechanism and used for baking and rolling the formed and thinned membrane. The preparation device for the dry electrode membrane can improve the efficiency of the membrane preparation device and the compatibility of the electrode preparation device.
Description
Technical Field
The application relates to the technical field of dry electrodes, in particular to a preparation device for a dry electrode membrane.
Background
At present, the research of continuous production of dry electrodes in the lithium battery industry is still in a preliminary stage, the preparation of the membrane of the dry electrode is a main procedure for preparing the dry electrode, and after the preparation of the membrane is completed, the membrane and a current collector can be thermally compounded, so that the preparation of a battery pole piece can be completed. In the prior art, the main flow preparation mode of the membrane is to prepare powder into the membrane, then take out the membrane and convey the membrane to other equipment for thinning and subsequent treatment, but the membrane preparation mode greatly reduces the comprehensive efficiency of the membrane preparation equipment and has larger mass production difficulty. In addition, the prior art does not have a device that integrates the preparation of dry electrodes with high solids (with a small amount of solvent) electrodes, resulting in insufficient device compatibility.
Disclosure of Invention
The application aims to provide a preparation device for a dry electrode membrane, so as to improve the efficiency of membrane preparation equipment and the compatibility of the electrode preparation equipment.
The aim of the application is achieved by adopting the following technical scheme. The preparation device for the dry electrode membrane comprises a membrane forming mechanism, a thinning forming mechanism and a baking mechanism, wherein the membrane forming mechanism is used for preparing electrode powder into a membrane and guiding the membrane to the thinning forming mechanism, the thinning forming mechanism is arranged at the downstream of the membrane forming mechanism and used for thinning and forming the membrane, and the baking mechanism is arranged at the downstream of the thinning forming mechanism and used for baking and rolling the formed membrane.
In some embodiments, the film forming mechanism includes a feed unit for providing electrode powder to a pressing unit for pressing the electrode powder into a film sheet, and a pressing unit disposed downstream of the feed unit.
In some embodiments, the film forming mechanism further comprises a first trimming unit disposed downstream of the pressing unit for trimming the film sheet.
In some embodiments, the film forming mechanism further comprises a roll passing unit comprising a first roll passing disposed downstream of the first trimming unit for guiding the trimmed film sheet to the thinning forming mechanism.
In some embodiments, the film forming mechanism further includes a winding and unwinding unit for winding or unwinding the film, and the roller passing unit further includes a second roller disposed downstream of the first trimming unit, where the second roller is used for guiding the trimmed film to the winding and unwinding unit for winding or guiding the film unwound by the winding and unwinding unit to the first roller.
In some embodiments, the thinning forming mechanism includes a tension control unit disposed downstream of the first pass roller for tension control of the film sheet, a thinning unit for thinning the thickness of the film sheet, and a second trimming unit for trimming the film sheet.
In some embodiments, the tension control unit includes a first tension roller and a second tension roller, the thinning unit includes a first pair of thinning rollers disposed downstream of the first tension roller and a second pair of thinning rollers disposed downstream of the second tension roller, and the second trimming unit is disposed downstream of the first pair of thinning rollers and the second tension roller is disposed downstream of the second trimming unit.
In some embodiments, the thinning forming mechanism further comprises a rectifying unit, wherein the rectifying unit is arranged between the second tension roller and the second trimming unit and is used for rectifying the film.
In some embodiments, the baking mechanism includes a thickness measuring unit disposed downstream of the second pair of thinning rollers for measuring the thickness of the formed film sheet, and a baking unit disposed downstream of the thickness measuring unit for baking the formed film sheet.
In some embodiments, the thickness measuring unit adopts a time-of-flight sensor to measure thickness, the baking unit comprises a hot air oven and a plurality of sections of hot rollers, and the plurality of sections of hot rollers are arranged in the hot air oven, wherein each section of the plurality of sections of hot rollers is configured into a cylinder, the side surfaces of each section of hot rollers of the plurality of sections of hot rollers are abutted, and the surfaces of the films penetrate through contact surfaces between the side surfaces of the plurality of sections of hot rollers and are contacted with the plurality of sections of hot rollers in an S-shaped wave mode.
The beneficial effects of the application at least comprise:
1. the film forming mechanism is used for making the electrode powder into the film and guiding the film to the thinning forming mechanism, the thinning forming mechanism is arranged at the downstream of the film forming mechanism and used for thinning and forming the film, and the baking mechanism is arranged at the downstream of the thinning forming mechanism and used for baking and rolling the formed film, so that the film forming mechanism, the thinning forming mechanism and the baking mechanism are integrated into one film preparation device, and the efficiency of the film preparation device is improved. Because the baking mechanism is integrated, the membrane preparation device can be used for preparing the electrode in a high-solid-content mode and can also be used for preparing the electrode in a dry method, so that the compatibility of the electrode preparation device is improved.
2. The film forming mechanism further comprises a winding and unwinding unit for winding or unwinding the film, the roller passing unit further comprises a second roller, the second roller is arranged at the downstream of the first cutting unit, the second roller is used for guiding the cut film to the winding and unwinding unit for winding or guiding the film unwound by the winding and unwinding unit to the first roller, manual detection of film quality and re-thinning of the film are facilitated, and film production efficiency is improved.
3. Through each section in multistage hot roll be constructed into the cylinder, butt between the side surface of each cylinder hot roll, multistage hot roll all set up in hot-blast oven, the surface of diaphragm passes the contact surface between the side surface of multistage hot roll to the mode of S type wave contacts with multistage hot roll, can guarantee that the thickness of diaphragm does not bounce and take constantly.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application, as well as the preferred embodiments thereof, together with the following detailed description of the application given in conjunction with the accompanying drawings.
Drawings
Fig. 1 shows a schematic structure of a manufacturing apparatus for a dry electrode membrane according to an embodiment of the present application.
Detailed Description
In order to further illustrate the technical means of the present application, a specific embodiment of a preparation device for dry electrode membrane according to the present application is described in detail below with reference to the accompanying drawings and preferred embodiments. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.
In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.
As shown in fig. 1, the preparation device for a dry electrode membrane according to the present application comprises a membrane forming mechanism 1, a thinning forming mechanism 2 and a baking mechanism 3, wherein the membrane forming mechanism 1 is used for processing electrode powder into a membrane and guiding the membrane to the thinning forming mechanism 2, the thinning forming mechanism 2 is arranged at the downstream of the membrane forming mechanism 1 and is used for thinning and processing the membrane for forming, and the baking mechanism 3 is arranged at the downstream of the thinning forming mechanism 2 and is used for baking and winding the formed membrane.
According to the application, the film forming mechanism 1 is used for preparing the electrode powder into the film and guiding the film to the thinning forming mechanism 2, the thinning forming mechanism 2 is arranged at the downstream of the film forming mechanism 1, the film thinning and forming mechanism 3 is arranged at the downstream of the thinning forming mechanism 2, and the formed film is baked and rolled, so that the film forming mechanism 1, the thinning forming mechanism 2 and the baking mechanism 3 are integrated into one film preparation device, the efficiency of the film preparation device is improved, and the baking mechanism 3 is integrated, so that the film preparation device can be used for preparing the electrode in a high-solid-content mode and can also be used for preparing the electrode in a dry mode, and the compatibility of the electrode preparation device is improved.
As shown in fig. 1, the film forming mechanism 1 includes a feeding unit 11 and a pressing unit 12, the feeding unit 11 is used for providing electrode powder to the pressing unit 12, the feeding unit 11 includes a material tank containing the electrode powder, and a discharge hole for discharging the electrode powder is formed in the material tank. A pressing unit 12 is provided downstream of the feeding unit 11, and the pressing unit 12 is provided so as to be able to press the electrode powder discharged from the discharge port into a sheet-like membrane. The pressing unit 12 includes a first pair of film-forming rollers 121 and a second pair of film-forming rollers 122, each of the first pair of film-forming rollers 121 and the second pair of film-forming rollers 122 being provided in pairs to effect pressing of the electrode powder, for example, the first pair of film-forming rollers 121 being provided so as to be movable toward each other to press the electrode powder passing through a gap formed therebetween. A first pair of film forming rollers 121 is provided downstream of the feeding unit 11, the first pair of film forming rollers 121 for pressing the electrode powder into a web having a thickness of less than 2mm, a second pair of film forming rollers 122 is provided downstream of the first pair of film forming rollers 121 and adjacent to the first film forming rollers 121, and the second pair of film forming rollers 122 for pressing the web into a sheet having a thickness of less than 1 mm.
The film forming mechanism 1 further includes a first slitting unit 13, the first slitting unit 13 being disposed downstream of the pressing unit 12 for slitting the film sheet. The first trimming unit 13 includes a first trimming device 131 and a second trimming device 132, and the first trimming device 131 and the second trimming device 132 are provided in pairs to trim the end surfaces of the film sheet. The film forming mechanism 1 further includes a scrap pulling unit 14 and a scrap collecting unit 15, the scrap pulling unit 14 being disposed downstream of the first cutting unit 13 for pulling the film scraps cut by the first cutting unit 13 to the scrap collecting unit 15, the scrap collecting unit 15 being disposed downstream of the scrap pulling unit 14 for collecting the film scraps. In some other embodiments, the film forming mechanism 1 may further include a retractable tray 19 for collecting film fragments that fall during the manufacturing process.
The film forming mechanism 1 further includes a passing roller unit 16, the passing roller unit 16 including a first passing roller 161, the first passing roller 161 being disposed downstream of the first trimming unit 13 for guiding the trimmed film sheet to the thinning-forming mechanism 2.
In some other embodiments, the film forming mechanism 1 further includes a winding and unwinding unit 17 and a rectifying unit 18, where the winding and unwinding unit 17 is disposed downstream of the rectifying unit 18, and the rectifying unit 18 is configured to rectify the film to be wound or unwound. In this embodiment, the over-roller unit 16 further includes a second over-roller 162 and a third over-roller 163, the second over-roller 162 is disposed downstream of the first slitting unit 13, the third over-roller 163 is disposed downstream of the second over-roller 162, and the third over-roller 163 and the second over-roller 162 are used to guide the slit film sheet to the winding-unwinding unit 17 for winding or to guide the unwinding film sheet from the winding-unwinding unit 17 to the first over-roller 161. In actual production, on one hand, after the film cut by the first cutting unit 13 passes through the second passing roller 162, the third passing roller 163 and the deviation rectifying unit 18, the film is wound to the winding and unwinding unit 17, and the film collected in this way can be used for manual detection to determine whether the quality of the film is qualified. On the other hand, if the thickness of the film rolled by the rolling unit 36 in the baking mechanism 3 is not up to the standard, the rolled film may be unrolled on the rolling unit 17, and the film sequentially passes through the deviation rectifying unit 18, the third passing roller 163, the second passing roller 162 and the first passing roller 161 to enter the thinning forming mechanism 2 to continue the thinning forming process.
As shown in fig. 1, the thinning-forming mechanism 2 includes a tension control unit 21, a thinning unit 22, and a second trimming unit 23, the tension control unit 21 being provided downstream of the film forming mechanism 1 for controlling the tension of the film sheet. The thinning unit 22 is for thinning the thickness of the film sheet, the second trimming unit 23 is for trimming the film sheet to shape the film sheet, and the baking mechanism 3 is provided downstream of the second trimming unit 23 for baking the shaped film sheet.
The tension control unit 21 includes a first tension roller 211 and a second tension roller 212, the thinning unit 22 includes a first pair of thinning rollers 221 and a second pair of thinning rollers 222, and the second trimming unit 23 includes a third trimming cutter 231 and a fourth trimming cutter 232. The first tension roller 211 is disposed downstream of the first passing roller 161 of the film forming mechanism 1 and is used for controlling the tension of qualified films, the first pair of thinning rollers 221 is disposed downstream of the first tension roller 211 and is used for thinning films, the first pair of thinning rollers 221 is used for rolling the films into films with the thickness smaller than 500um, the third edge cutter 231 and the fourth edge cutter 232 are disposed downstream of the first pair of thinning rollers 221 in pairs and are used for trimming the end surfaces of the thinned films, the second tension roller 212 is disposed downstream of the third edge cutter 231 and the fourth edge cutter 232 and is used for adjusting the tension of the films subjected to edge cutting, the end surfaces of the films subjected to edge cutting processing are leveled by the third edge cutter 231 and the fourth edge cutter 232, and at the moment, the tension is adjusted by the second tension roller 212, so that the stress concentration of the films can be avoided and the breakage of the films can be prevented. A second pair of thinning rollers 222 is provided downstream of the second tension roller 212 for further thinning the film sheet, the second pair of thinning rollers 222 being for rolling the film sheet into a film sheet having a thickness of less than 200 um.
In some other embodiments, the ironing mechanism 2 further comprises a roller passing unit 24, the roller passing unit 24 being used for guiding the film. The pass roller unit 24 includes a fourth pass roller 241 and a fifth pass roller 242, the fourth pass roller 241 being disposed between the first pair of thinning rollers 221 and the first tension roller 211 for adjusting an in-roller wrap angle before the film sheet enters the first pair of thinning rollers 221, thereby adjusting flatness and surface state of the film sheet. A fifth pass roller 242 is disposed between the second pair of thinning rollers 222 and the second tension roller 212 for adjusting the entrance wrap angle before the film sheet enters the second pair of thinning rollers 222, thereby adjusting the flatness and surface condition of the film sheet.
In some other embodiments, the ironing mechanism 2 further comprises a rectifying unit 25, the rectifying unit 25 being arranged between the second tension roller 212 and the third edge cutter 231 and the fourth edge cutter 232 arranged in pairs for rectifying the film sheet. The end surfaces of the diaphragms trimmed by the third trimming device 231 and the fourth trimming device 232 are smooth, the correction unit 25 is arranged at the downstream of the third trimming device 231 and the fourth trimming device 232, so that correction accuracy can be improved, and the correction unit 25 is arranged at the upstream of the second tension roller 212, so that correction can be avoided.
In some other embodiments, the second trimming unit 23 may further include fifth and sixth trimmers 233 and 234, the fifth and sixth trimmers 233 and 234 being disposed in pairs downstream of the second pair of thinning rollers 222, the fifth and sixth trimmers 233 and 234 being used to cut off wavy edges that occur on the film sheet after being re-rolled by the second pair of thinning rollers 222.
In some other embodiments, the thinning forming mechanism 2 further comprises a scrap collecting unit 26, the scrap collecting unit 26 being connected to the second trimming unit 23 for collecting the scrap of the film sheet produced by the processing of the second trimming unit 23.
As shown in fig. 1, a baking mechanism 3 is provided downstream of the ironing forming mechanism 2, specifically, the baking mechanism 3 is provided downstream of the second pair of ironing rollers 222 for baking the formed film sheet. The baking mechanism 3 includes a thickness measuring unit 31 and a baking unit 32, the thickness measuring unit 31 being disposed downstream of the second pair of thinning rollers 222 for measuring the thickness of the formed film, and the baking unit 32 being disposed downstream of the thickness measuring unit 31 for baking the formed film to remove moisture therein. The thickness measuring unit 31 measures thickness using a time-of-flight sensor, and can measure thickness of all points in the width direction of the diaphragm at the same time. Because the tension of the film is very small, the film is easy to break due to no support by singly adopting a hot air passing roller or a hot air oven, and the baking unit 32 comprises the hot air oven and a plurality of sections of hot rollers, wherein each section of the plurality of sections of hot rollers is configured into a cylinder, the side surfaces of the cylindrical hot rollers are abutted, the plurality of sections of hot rollers are arranged in the hot air oven, the surfaces of the film pass through the contact surfaces between the side surfaces of the plurality of sections of hot rollers and are contacted with the plurality of sections of hot rollers in an S-shaped wave manner, and meanwhile, the hot air oven can bake the film, so that the thickness of the film is prevented from bouncing and continuous belt breakage.
The baking mechanism 3 further includes a roller passing unit 33, a deviation rectifying unit 34, a tension control unit 35 and a winding unit 36, the roller passing unit 33 includes a fifth roller passing 331 and a sixth roller passing 332, the fifth roller passing 331 is disposed at a downstream of the baking unit 32, the sixth roller passing 332 is disposed at a downstream of the fifth roller passing 331, the deviation rectifying unit 34 is disposed between the fifth roller passing 331 and the sixth roller passing 332 for rectifying a film to be wound, the tension control unit 35 is disposed between the sixth roller passing 332 and the winding unit 36, and since the tension control unit 35 is spaced from the deviation rectifying unit 34 by a certain distance, the tension control unit 35 is used for adjusting a tension of the film before winding and at the same time, can also avoid affecting a deviation rectifying effect of the deviation rectifying unit 34.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to practice the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The preparation device for the dry electrode membrane is characterized by comprising a membrane forming mechanism, a thinning forming mechanism and a baking mechanism, wherein the membrane forming mechanism is used for preparing electrode powder into a membrane and guiding the membrane to the thinning forming mechanism, the thinning forming mechanism is arranged at the downstream of the membrane forming mechanism and used for thinning and forming the membrane, and the baking mechanism is arranged at the downstream of the thinning forming mechanism and used for baking and rolling the formed and thinned membrane.
2. The manufacturing apparatus for dry electrode sheets according to claim 1, wherein the film forming mechanism includes a feed unit for supplying electrode powder to a pressing unit for pressing the electrode powder into the sheet, and a pressing unit provided downstream of the feed unit.
3. The apparatus for producing a dry electrode film sheet as claimed in claim 2, wherein the film forming mechanism further comprises a first trimming unit provided downstream of the pressing unit for trimming the film sheet.
4. A preparation device for a dry electrode film sheet as claimed in claim 3, wherein the film forming mechanism further comprises a roller passing unit including a first roller passing unit disposed downstream of the first slitting unit for guiding the slit film sheet to the thinning forming mechanism.
5. The apparatus according to claim 4, wherein the film forming mechanism further comprises a winding and unwinding unit for winding or unwinding the film, the passing unit further comprises a second passing roller disposed downstream of the first slitting unit, the second passing roller being for guiding the slit film to the winding and unwinding unit for winding or guiding the film unwound by the winding and unwinding unit to the first passing roller.
6. The apparatus according to claim 4, wherein the thinning-forming mechanism includes a tension control unit provided downstream of the first passing roller for tension control of the film, a thinning unit for thinning the thickness of the film, and a second trimming unit for trimming the film.
7. The apparatus according to claim 6, wherein the tension control unit includes a first tension roller and a second tension roller, the thinning unit includes a first pair of thinning rollers disposed downstream of the first tension roller and a second pair of thinning rollers disposed downstream of the second tension roller, and the second trimming unit is disposed downstream of the first pair of thinning rollers and the second tension roller is disposed downstream of the second trimming unit.
8. The apparatus according to claim 7, wherein the thinning forming mechanism further comprises a rectifying unit disposed between the second tension roller and the second trimming unit for rectifying the film.
9. The apparatus according to claim 7, wherein the baking mechanism includes a thickness measuring unit disposed downstream of the second pair of thinning rollers for measuring a thickness of the formed film sheet, and a baking unit disposed downstream of the thickness measuring unit for baking the formed film sheet.
10. The apparatus according to claim 9, wherein the thickness measuring unit measures thickness using a time-of-flight sensor, the baking unit includes a hot air oven and a plurality of heat rolls provided inside the hot air oven, wherein each of the plurality of heat rolls is configured as a cylinder, side surfaces of the heat rolls of the plurality of heat rolls abut against each other, and surfaces of the molded film sheet pass through contact surfaces between the side surfaces of the heat rolls of the plurality of heat rolls to contact the heat rolls of the plurality of heat rolls in an S-wave manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210483787.6A CN117059729A (en) | 2022-05-05 | 2022-05-05 | Preparation device for dry electrode membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210483787.6A CN117059729A (en) | 2022-05-05 | 2022-05-05 | Preparation device for dry electrode membrane |
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| Publication Number | Publication Date |
|---|---|
| CN117059729A true CN117059729A (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210483787.6A Pending CN117059729A (en) | 2022-05-05 | 2022-05-05 | Preparation device for dry electrode membrane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118315762A (en) * | 2024-06-07 | 2024-07-09 | 深圳大学 | Equipment for preparing composite diaphragm |
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2022
- 2022-05-05 CN CN202210483787.6A patent/CN117059729A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118315762A (en) * | 2024-06-07 | 2024-07-09 | 深圳大学 | Equipment for preparing composite diaphragm |
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