CN116995183A - Dry-method pre-lithiation rolling film forming equipment - Google Patents
Dry-method pre-lithiation rolling film forming equipment Download PDFInfo
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- CN116995183A CN116995183A CN202210443206.6A CN202210443206A CN116995183A CN 116995183 A CN116995183 A CN 116995183A CN 202210443206 A CN202210443206 A CN 202210443206A CN 116995183 A CN116995183 A CN 116995183A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000006138 lithiation reaction Methods 0.000 title claims abstract description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 140
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 140
- 239000002131 composite material Substances 0.000 claims abstract description 125
- 239000011888 foil Substances 0.000 claims abstract description 99
- 238000003490 calendering Methods 0.000 claims abstract description 30
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims description 29
- 238000013329 compounding Methods 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 19
- 238000009966 trimming Methods 0.000 claims description 16
- 238000005056 compaction Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000001502 supplementing effect Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 3
- 230000009469 supplementation Effects 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 29
- 238000005520 cutting process Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery 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
- H01M4/0435—Rolling or calendering
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
- B29C66/7422—Aluminium or alloys of aluminium
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (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 invention belongs to the technical field of lithium ion batteries, and particularly provides dry-method pre-lithiation roll-in film forming equipment. The invention aims to solve the technical problem of difficult lithium supplementation by a dry method. For this purpose, the dry prelithiation roll-forming apparatus of the present invention comprises a first roll-forming assembly, a second roll-forming assembly, a lithium foil calendaring assembly, a first pass composite assembly, a second pass composite assembly, and a compacting assembly; the first rolling film forming assembly presses the premix into a first electrode film, the lithium foil rolling assembly presses the lithium foil, and the first composite assembly rolls and composites the first electrode film and the lithium foil into a first composite membrane; the second rolling film forming assembly presses the premix into a second electrode film, and the second composite assembly rolls and combines the first composite film and the second electrode film into a second composite film; the compacting component compacts the second composite membrane to form the pre-lithiated electrode membrane. The dry-method pre-lithiation roll-in film forming equipment combines a dry-method film-making technology and a lithium supplementing technology, and solves the problem of dry-method lithium supplementation.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly provides dry-method pre-lithiation roll-in film forming equipment.
Background
At present, the dry electrode of the lithium ion battery pole piece is still in a development stage, no mature equipment is processed and manufactured, and the large-scale mass production of the equipment is early; meanwhile, although the lithium supplementing technology and equipment in the wet pole piece preparation process have mass production, the manufacturing risk and the mass production efficiency are low.
Based on the prior art and the equipment profile, the lithium is difficult to supplement by the dry electrode, and the dry lithium supplementing roll forming film machine belongs to brand new equipment development.
Accordingly, there is a need in the art for a roll forming apparatus capable of lithium replenishment of dry electrodes to address the above-described problems.
Disclosure of Invention
The invention aims to solve the technical problem that lithium is difficult to supplement for a dry electrode. The invention provides dry-method pre-lithiation rolling film forming equipment which comprises a first rolling film forming assembly, a second rolling film forming assembly, a lithium foil rolling assembly, a first composite assembly, a second composite assembly and a compacting assembly; the first rolling film forming assembly is arranged to be capable of rolling and compounding the premix into a first electrode film, the lithium foil rolling assembly is arranged to be capable of rolling and compounding the lithium foil, the first composite assembly is arranged between the first rolling film forming assembly and the lithium foil rolling assembly, and the first composite assembly is arranged to be capable of rolling and compounding the first electrode film and the lithium foil to form a first composite membrane; the second rolling film forming assembly is arranged to be capable of rolling and compounding the premix into a second electrode film, the second composite assembly is arranged between the first composite assembly and the second rolling film forming assembly, and the second composite assembly is arranged to be capable of rolling and compounding the lithium foil side of the first composite film sheet and the second electrode film to form a second composite film sheet; the compaction assembly is disposed downstream of the second pass composite assembly and is configured to enable compaction of the second pass composite membrane sheet to form a pre-lithiated electrode film.
In the preferable technical scheme of the dry prelithiation roll forming equipment, the first roll forming assembly comprises a first premix discharging device, a first roll forming device and a first roll thinning device; the first roll forming device is arranged to be capable of pressing the premix released by the first premix discharging device into an initial first electrode film, and the first roll thinning device is arranged to be capable of carrying out thinning treatment on the initial first electrode film to form a final first electrode film.
In the preferable technical scheme of the dry prelithiation roll forming equipment, a plurality of roll passing devices, a trimming device, a deviation correcting device and a tension control device are arranged between the first roll forming device and the first roll thinning device; and/or a plurality of roller passing devices, a trimming device, a deviation correcting device and a tension control device which are sequentially arranged are arranged between the first roller pressing thinning device and the first composite assembly.
In the preferable technical scheme of the dry prelithiation roll forming equipment, the second roll forming assembly comprises a second premix discharging device, a second roll forming device and a second roll thinning device; the second roll forming device is arranged to be capable of pressing the premix released by the second premix discharging device into an initial second electrode film, and the second roll thinning device is arranged to be capable of carrying out thinning treatment on the initial second electrode film to form a final second electrode film.
In the preferable technical scheme of the dry prelithiation roll forming equipment, a plurality of roll passing devices, a trimming device, a deviation correcting device and a tension control device are arranged between the second roll forming device and the second roll thinning device; and/or at least one roller passing device is arranged between the second roller thinning device and the second composite component.
In the preferable technical scheme of the dry-method prelithiation roll forming equipment, the lithium foil rolling assembly comprises a first film unreeling module, a second film unreeling module, a lithium belt unreeling module, a lithium foil rolling device, a first film rolling module, a lithium foil conveying module and a second film rolling module; the first film unreeling module, the second film unreeling module and the lithium belt unreeling module are jointly arranged to clamp a lithium belt between the first film and the second film and are conveyed into the lithium foil calendaring device for calendaring treatment so as to form lithium foil; the first film rolling module is arranged at the downstream of the lithium foil rolling device and is arranged to be capable of recycling the rolled first film; the lithium foil conveying module is arranged at the downstream of the lithium foil calendaring device and is arranged to be capable of conveying the lithium foil and the second film to the first composite component together for calendaring and compositing; the second film winding module is arranged at the downstream of the first composite component and is arranged to be capable of recycling the second film after calendaring and compositing.
In the preferable technical scheme of the dry-method prelithiation roll forming equipment, a roll passing device and a tension control device are arranged between the first composite assembly and the second composite assembly; and/or a roller passing device and a tension control device are arranged between the second channel compound assembly and the compacting assembly.
In the preferable technical scheme of the dry-method prelithiation rolling film forming equipment, the dry-method prelithiation rolling film forming equipment further comprises a film collecting device, wherein the film collecting device is arranged at the downstream of the compacting assembly and is arranged to be capable of carrying out rolling treatment on the prelithiation electrode film.
In the preferable technical scheme of the dry pre-lithiation roll-in film forming apparatus, the dry pre-lithiation roll-in film forming apparatus further comprises a cooling device, wherein the cooling device is arranged between the compaction assembly and the film collecting device and is arranged to be capable of performing cooling treatment on the pre-lithiated electrode film after being compacted by the compaction assembly.
In the preferable technical scheme of the dry pre-lithiation roll-in film forming apparatus, the dry pre-lithiation roll-in film forming apparatus further comprises a thickness detection device, wherein the thickness detection device is arranged between the cooling device and the film collecting device and is arranged to be capable of detecting the thickness of the pre-lithiated electrode film after being subjected to cooling treatment by the cooling device.
As can be appreciated by those skilled in the art, in the technical scheme of the invention, the premix is pressed into a first electrode film by arranging a first rolling film forming assembly, the lithium foil is pressed into a lithium foil by arranging a lithium foil rolling assembly, and the first electrode film and the lithium foil are rolled and compounded by arranging a first composite assembly to form a first composite membrane; the premix is pressed into a second electrode film by the second rolling film forming assembly, the lithium foil side of the first composite film and the second electrode film are subjected to rolling and compounding by the second rolling film forming assembly to form a second composite film, and the second composite film is subjected to compacting treatment by the compacting assembly to form the prelithiation electrode film. According to the dry-method pre-lithiation roll-in film forming equipment, the dry-method film making technology and the lithium supplementing technology are organically combined, and lithium supplementing is performed while electrode films are prepared, so that the technical problem of difficulty in dry-method lithium supplementing is solved. Meanwhile, the dry-method pre-lithiation roll-in film forming equipment can be effectively suitable for large-scale mass production, so that the production efficiency is effectively improved.
Drawings
The present disclosure will become more readily understood with reference to the accompanying drawings. As will be readily appreciated by those skilled in the art: the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention. Moreover, like numerals in the figures are used to designate like parts, wherein:
FIG. 1 is a schematic diagram of the overall structure of a dry prelithiation roll forming apparatus of the present invention;
FIG. 2 is a schematic illustration of the connection between a first roll forming assembly, a second roll forming assembly, a first pass composite assembly, and a second pass composite assembly of the present invention;
FIG. 3 is a schematic structural view of the lithium foil rolled assembly of the invention, showing the connection structure between the lithium foil rolled assembly and the first composite assembly;
FIG. 4 is a schematic illustration of the connection of the film take-up device to the compaction assembly of the present invention showing the cooling device, the thickness detection device and the pull roll;
reference numerals:
1. a first roll forming assembly; 101. a first premix discharging device; 102. a first roll forming device; 103. a first roll thinning device; 104. a first roller passing device; 105. a first deviation correcting device; 106. a first tension control device; 107. a first cutting device; 108. a first waste collection device; 109. eleventh stick passing means; 110. eleventh deviation correcting device; 111. an eleventh tension control device; 112. a third trimming device; 113. a third waste material collecting device;
2. a second roll forming assembly; 201. a second premix discharging device; 202. a second roll forming device; 203. a second roll thinning device; 204. a second roller passing device; 205. a second deviation correcting device; 206. a second tension control device; 207. a second trimming device; 208. a second waste collection device; 209. a twelfth stick passing device;
3. A lithium foil calendaring assembly; 301. a first film unreeling module; 302. a second film unreeling module; 303. a lithium belt unreeling module; 304. a lithium foil rolling device; 305. the first film winding module; 306. a lithium foil delivery module; 3061. a third roller passing device; 3062. a third tension control device; 3063. a third deviation rectifying device; 307. the second film winding module; 308. a fourth roller passing device; 309. a fourth deviation rectifying device; 310. a fourth tension control device; 311. a fifth roller passing device; 312. fifth deviation correcting device; 313. a fifth tension control device; 314. a sixth roller passing device; 315. a sixth deviation rectifying device; 316. a sixth tension control device; 317. a seventh roller passing device; 318. seventh deviation correcting device; 319. a seventh tension control device; 320. an eighth roller passing device; 321. eighth deviation correcting device; 322. an eighth tension control device; 323. a speed measuring roller;
4. a first composite component; 401. a ninth roller passing device; 402. a ninth tension control device;
5. a second pass composite assembly; 501. a tenth roller passing device; 502. a tenth tension control device;
6. a compacting assembly; 7. a film collecting device; 8. a cooling device; 9. a thickness detection device; 10. a traction roller;
15. A first electrode film; 16. a second electrode film; 17. a lithium strip; 18. a first film; 19. a second film; 21. a first composite membrane; 22. a second composite membrane; 23. pre-lithiating the electrode film.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art can adapt it as desired to suit a particular application.
It should be noted that, in the description of the present invention, terms such as "upstream," "downstream," and the like refer to directions or positional relationships based on directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring first to fig. 1, the dry prelithiation roll film forming apparatus of the present invention includes a first roll film forming assembly 1, a second roll film forming assembly 2, a lithium foil calendaring assembly 3, a first pass composite assembly 4, a second pass composite assembly 5, and a compacting assembly 6; the first rolling film forming assembly 1 is arranged to be capable of rolling a premix into a first electrode film 15, the lithium foil rolling assembly 3 is arranged to be capable of rolling a lithium foil, the first composite assembly 4 is arranged between the first rolling film forming assembly 1 and the lithium foil rolling assembly 3, and the first composite assembly 4 is arranged to be capable of rolling and compositing the first electrode film 15 and the lithium foil to form a first composite membrane 21; the second roll forming assembly 2 is arranged to be capable of pressing the premix into a second electrode film 16, the second pass compounding assembly 5 is arranged between the first pass compounding assembly 4 and the second roll forming assembly 2, and the second pass compounding assembly 5 is arranged to be capable of calender compounding the lithium foil side of the first pass compounding film 21 and the second electrode film 16 to form a second pass compounding film 22; a compacting assembly 6 is provided downstream of the second pass composite assembly 5, and the compacting assembly 6 is arranged to enable a compacting treatment of the second pass composite membrane 22 to form a pre-lithiated electrode film 23. Based on the above structural arrangement, the premix is pressed by the first roll forming assembly 1 to form the first electrode film 15, and the lithium foil rolling assembly 3 rolls the lithium strip into the lithium foil, and the first electrode film 15 and the lithium foil are rolled and compounded by the first composite assembly 4 to form the first composite membrane 21; next, the premix is pressed by the second roll forming assembly 2 to form a second electrode film 16, the first composite membrane 21 and the second electrode film 16 are subjected to rolling compounding by the second composite assembly 5 to form a second composite membrane 22, and when the rolling compounding is performed, the lithium foil side of the first composite membrane 21 is contacted with the second electrode film 16, so that a structure that the first electrode film 15 and the second electrode film 16 sandwich the lithium foil is realized; the second composite membrane 22 is compacted by the compacting assembly 6 to form a pre-lithiated electrode film 23.
It should be noted that, the specific structures of the first rolled film forming assembly 1, the second rolled film forming assembly 2, the lithium foil rolling assembly 3, the first composite assembly 4, the second composite assembly 5 and the compacting assembly 6 are not limited in any way, as long as the first rolled film forming assembly 1 can press the premix to form the first electrode film 15, the second rolled film forming assembly 2 can press the premix to form the second electrode film 16, the lithium foil rolling assembly 3 can roll the lithium strip 17 to form the lithium foil, the first composite assembly 4 can roll and composite the first electrode film 15 and the lithium foil to form the first composite film 21, the second composite assembly 5 can roll and composite the lithium foil side of the first composite film 21 and the second electrode film 16 to form the second composite film 22, the compacting assembly 6 can compact the second composite film 22 to form the pre-lithiated electrode film 23, and a person skilled in the art can set the specific structures of the first rolled film forming assembly 1, the second rolled film forming assembly 2, the lithium foil rolling assembly 3, the lithium foil rolling assembly 4, the second composite assembly 4 and the second composite assembly 6 according to specific requirements of the rolling process.
Referring next to fig. 2, in this embodiment, the first roll forming assembly 1 includes a first premix run device 101, a first roll forming device 102, and a first roll thinning device 103; wherein the first roll forming device 102 is configured to be capable of pressing the premix discharged from the first premix discharging device 101 into an initial first electrode film 15, and the first roll thinning device 103 is configured to be capable of subjecting the initial first electrode film 15 to a thinning process to form a final first electrode film 15. It should be noted that, the specific structures and the number of the first premix discharging device 101, the first roll forming device 102 and the first roll thinning device 103 are not limited in the present invention, and those skilled in the art can select and adjust the premix according to actual needs; in addition, the present invention is not limited in any way to the specific type of roller, and those skilled in the art can select them according to the production needs, for example, solid rollers, hollow rollers, pressure rollers, or the like, as desired.
Further, as a feasible embodiment, a pulverizer is arranged in the first premix feeding device 101, and the pulverizer can pulverize the premix in the first premix feeding device 101, so that discharging is facilitated.
Still further, as a possible embodiment, the first roll forming device 102 includes three parts of a first press roll, a second press roll, and a third press roll, wherein the first press roll and the second press roll are sequentially horizontally arranged, the second press roll and the third press roll are sequentially vertically arranged, that is, the first press roll is arranged at the left side of the second press roll, and the third press roll is arranged below the second press roll; based on this, after the premix in the first premix discharging device 101 is released, the preliminary rolling is performed through the roll gap between the first press roll and the second press roll, and then the secondary rolling is performed through the roll gap between the second press roll and the third press roll, so that the initial first electrode film 15 is formed by rolling. It should be noted that the present invention does not limit the specific number and arrangement of the press rolls and the specific size of the roll gap between the press rolls, and those skilled in the art can set the press rolls according to the actual production requirements.
In addition, the first rolling thinning device 103 comprises a first thinning press roller, a second thinning press roller and a third thinning press roller, wherein the first thinning press roller and the second thinning press roller are sequentially and vertically arranged, the second thinning press roller and the third thinning press roller are sequentially and horizontally arranged, namely the second thinning press roller is arranged below the first thinning press roller, and the third thinning press roller is arranged on the right side of the second thinning press roller; based on this, the initial first electrode film 15 is first subjected to primary thinning through the roll gap between the first thinning press roll and the second thinning press roll, and then subjected to secondary thinning through the roll gap between the second thinning press roll and the third thinning press roll, so that the final first electrode film 15 is formed by thinning and calendaring. It should be noted that, the present invention does not limit the specific number and the specific arrangement manner of the thinning press rollers and the specific size of the roll gap between the thinning press rollers, and those skilled in the art can set the setting according to the actual production requirements.
With continued reference to fig. 2, as a possible embodiment, a plurality of first roll passing devices 104, and a first trimming device 107, a first deviation correcting device 105, and a first tension control device 106 are disposed between the first roll forming device 102 and the first roll thinning device 103. The first roller passing device 104 is used for normally conveying the initial first electrode film 15, the first deviation correcting device 105 is used for preventing the initial first electrode film 15 from deviating during conveying, the first tension control device 106 is used for adjusting the tension of the initial first electrode film 15 so as to prevent the initial first electrode film 15 from interrupting a belt during conveying, and the first cutting device 107 is used for cutting off the redundant edges of the initial first electrode film 15 to enable the initial first electrode film 15 to meet production requirements; in addition, the bottom of the first cutting device 107 is preferably provided with a first waste collection device 108 for collecting cut waste. The specific structure, the number of the arrangement and the specific installation position of the first roller passing device 104, the first trimming device 107, the first deviation correcting device 105 and the first tension control device 106 are not limited in the present invention, and may be adjusted as required by those skilled in the art. All such changes in the specific structure and number do not depart from the basic principles of the invention and are intended to be within the scope thereof.
With continued reference to fig. 2, as a possible embodiment, a plurality of eleventh roller passing devices 109, and third trimming devices 112, eleventh deviation rectifying devices 110, and eleventh tension controlling devices 111 are provided between the first roller thinning device 103 and the first composite member 4. The eleventh roller passing device 109 is used for normally conveying the final first electrode film 15, the eleventh deviation rectifying device 110 is used for preventing the final first electrode film 15 from deviating during conveying, the eleventh tension control device 111 is used for adjusting the tension of the final first electrode film 15 so as to prevent the final first electrode film 15 from being broken in the conveying process, and the third edge cutting device 112 is used for cutting off the redundant edges of the final first electrode film 15, so that the final first electrode film 15 meets the production requirements. In addition, the bottom of the third trimming means 112 is preferably provided with third waste collection means 113 for collecting the cut waste. The present invention is not limited to the specific structure, number of settings, and specific installation positions of the eleventh roller device 109, the third trimming device 112, the eleventh deviation rectifying device 110, and the eleventh tension control device 111, and those skilled in the art can adjust the configuration as needed. All such changes in the specific structure and number do not depart from the basic principles of the invention and are intended to be within the scope thereof.
With continued reference to fig. 2, in this particular embodiment, the second roll forming assembly 2 includes a second premix feed apparatus 201, a second roll forming apparatus 202, and a second roll thinning apparatus 203; wherein the second roll forming device 202 is configured to be capable of pressing the premix discharged from the second premix discharging device 201 into the initial second electrode film 16, and the second roll thinning device 203 is configured to be capable of subjecting the initial second electrode film 16 to a thinning process to form the final second electrode film 16. It should be noted that, the specific structures and the number of the second premix discharging device 201, the second roll forming device 202 and the second roll thinning device 203 are not limited in the present invention, and those skilled in the art can select and adjust the second premix discharging device according to actual needs; in addition, the present invention is not limited in any way to the specific type of roller, and those skilled in the art can select them according to the production needs, for example, solid rollers, hollow rollers, pressure rollers, or the like, as required.
Further, as a possible embodiment, a pulverizer is disposed in the second premix discharging device 201, and the pulverizer can pulverize the premix in the second premix discharging device 201, so that discharging is facilitated.
Still further, as a possible embodiment, the second roll film forming apparatus 202 includes three parts of a fourth press roll, a fifth press roll, and a sixth press roll, wherein the fourth press roll and the fifth press roll are disposed horizontally in order, and the fifth press roll and the sixth press roll are disposed vertically in order; the fourth press roller is arranged on the right side of the fifth press roller, and the sixth press roller is arranged below the fifth press roller; based on this, after the premix in the second premix discharging device 201 is released, the preliminary rolling is performed through the roll gap between the fourth press roll and the fifth press roll, and then the secondary rolling is performed through the roll gap between the fifth press roll and the sixth press roll, so that the initial second electrode film 16 is formed by rolling. It should be noted that the present invention does not limit the specific number and arrangement of the press rolls and the specific size of the roll gap between the press rolls, and those skilled in the art can set the press rolls according to the actual production requirements.
In addition, the second rolling and thinning device 203 includes three parts of a fourth thinning press roller, a fifth thinning press roller and a sixth thinning press roller, wherein the fourth thinning press roller and the fifth thinning press roller are sequentially and vertically arranged, the fifth thinning press roller and the sixth thinning press roller are sequentially and horizontally arranged, that is, the fifth thinning press roller is arranged below the fourth thinning press roller, and the sixth thinning press roller is arranged at the left side of the fifth thinning press roller; based on this, the initial second electrode film 16 is first subjected to primary thinning through the roll gap between the fourth thinning press roll and the fifth thinning press roll, and then subjected to secondary thinning through the roll gap between the fifth thinning press roll and the sixth thinning press roll, so that the final second electrode film 16 is formed by thinning and calendaring. It should be noted that, the present invention does not limit the specific number and the specific arrangement manner of the thinning press rollers and the specific size of the roll gap between the thinning press rollers, and those skilled in the art can set the setting according to the actual production requirements.
With continued reference to fig. 2, as a possible embodiment, a plurality of second roll passing devices 204, and a second trimming device 207, a second deviation correcting device 205, and a second tension control device 206 are disposed between the second roll forming device 202 and the second roll thinning device 203. The second roller passing device 207 is used for normally conveying the initial second electrode film 16, the second deviation rectifying device 205 is used for preventing the initial second electrode film 16 from deviating during conveying, the second tension control device 206 is used for adjusting the tension of the initial second electrode film 16 so as to prevent the initial second electrode film 16 from being broken in the conveying process, and the second edge cutting device 207 is used for cutting off the redundant edges of the initial second electrode film 16 to enable the initial second electrode film 16 to meet production requirements. In addition, the bottom of the second trimming device 207 is preferably provided with a second scrap collecting device 208 for collecting the cut scrap. The specific structure, number and specific installation position of the second roller passing device 204, the second trimming device 207, the second deviation rectifying device 205 and the second tension control device 206 are not limited in the present invention, and may be adjusted as required by those skilled in the art. All such changes in the specific structure and number do not depart from the basic principles of the invention and are intended to be within the scope thereof.
With continued reference to fig. 2, as a possible embodiment, at least one twelfth roller device 209 is provided between the second roller thinning device 203 and the second composite component 5, and the twelfth roller device 209 is used for normal conveying of the final second electrode film 16. It should be noted that the present invention is not limited to the specific structure, number of arrangements and specific installation positions of the twelfth stick passing device 209, and those skilled in the art can adjust the present invention according to actual production requirements. All such changes in the specific structure and number do not depart from the basic principles of the invention and are intended to be within the scope thereof.
Referring next to fig. 3, as one possible embodiment, the lithium foil rolling assembly 3 includes a first film unreeling module 301, a second film unreeling module 302, a lithium tape unreeling module 303, a lithium foil rolling device 304, a first film rolling module 305, a lithium foil conveying module 306, and a second film rolling module 307; the first film unreeling module 301, the second film unreeling module 302 and the lithium tape unreeling module 303 are jointly arranged to clamp the lithium tape 17 between the first film 18 and the second film 19 and convey the lithium tape to the lithium foil calendaring device 304 for calendaring treatment to form lithium foil; the first film winding module 305 is disposed downstream of the lithium foil rolling device 304, and is configured to be capable of recovering the rolled first film 18; the lithium foil conveying module 306 is arranged at the downstream of the lithium foil calendaring device 304 and is configured to be capable of conveying the lithium foil and the second film 19 together to the first composite component 4 for calendaring and compositing; the second film winding module 307 is disposed downstream of the first pass compounding assembly 4 and is configured to be capable of recovering the calendered and compounded second film 19. In this embodiment, the first film unreeling module 301 is used for unreeling the first film 18, the lithium tape unreeling module 303 is used for unreeling the lithium tape, the second film unreeling module 302 is used for unreeling the second film 19, the common arrangement of the first film unreeling module 301, the lithium tape unreeling module 303 and the second film unreeling module 302 enables the lithium tape 17 to be clamped between the first film 18 and the second film 19 and jointly conveyed to the lithium foil rolling device 304 for rolling treatment, the lithium foil rolling device 304 rolls the lithium tape 17 into a lithium foil and transfers the lithium foil onto the second film 19, the first film 18 is recovered by the first film rolling module 305 after being rolled by the lithium foil rolling device 304, the second film 19 transferred with the lithium foil is conveyed to the first composite component 4 by the lithium foil conveying module 306, the second film 19 is recovered by the second film rolling module 307 after passing through the first composite component 4, and the lithium foil is rolled with the first film 15 under the rolling action of the first composite component 4 to form the composite membrane 21.
It should be noted that, the specific structures of the first film unreeling module 301, the second film unreeling module 302, and the lithium tape unreeling module 303 are not limited in the present invention, and those skilled in the art can select and adjust the specific structures according to the actual use requirements, so long as the unreeling function can be achieved. In addition, the specific structures of the first film winding module 305 and the second film winding module 307 are not limited in the present invention, and those skilled in the art can select and adjust the film according to the actual use requirement, so long as the film can be recovered and wound.
As a possible embodiment, the lithium foil rolling device 304 includes a first rolling roller and a second rolling roller, and the lithium belt 17 is sandwiched between the first film 18 and the second film 19 and is fed into a roll gap between the first rolling roller and the second rolling roller to be rolled to form a lithium foil. It should be noted that the present invention does not limit the specific size of the roll gap between the first calender roll and the second calender roll, and those skilled in the art can adjust the size of the roll gap between the first calender roll and the second calender roll to suit the production needs. In addition, the specific structures of the first calender roll and the second calender roll are not limited in this embodiment, and those skilled in the art can select calender rolls of corresponding structures according to production needs to use.
Further, as a possible embodiment, the first film 18 can be peeled off immediately after passing through the lithium foil rolling device 304 by controlling the rotation speed of the first rolling roller to be greater than the rotation speed of the second rolling roller, so as to facilitate the recovery and rolling of the first film rolling module 305; meanwhile, the arrangement can ensure that the lithium strip 17 forms lithium foil and is smoothly transferred onto the second film 19 when being rolled by the lithium foil rolling device 304, so that the subsequent conveying is convenient.
With continued reference to fig. 3, as one possible embodiment, the lithium foil delivery module 306 includes a third roller device 3061, a third tension control device 3062, and a third deflection device 3063, with the third roller device 3061, the third tension control device 3062, and the third deflection device 3063 being disposed between the lithium foil calendaring device 304 and the first pass composite assembly 4 to deliver the second film 19 with the transferred lithium foil from the lithium foil calendaring device 304 to the first pass composite assembly 4 and the first electrode film 15 for calendar lamination to form the first pass composite film 21. The specific structure, the number of settings and the positions of the third roller device 3061, the third tension control device 3062 and the third deviation correcting device 3063 are not limited in the present invention, and may be adjusted according to actual needs by those skilled in the art.
With continued reference to fig. 3, as a possible embodiment, a fourth roller passing device 308, a fourth deviation correcting device 309 and a fourth tension control device 310 are disposed between the first film unreeling module 301 and the lithium foil calendaring device 304, so as to realize smooth conveying of the first film 18, and ensure that the first film 18 does not deviate and break during conveying. It should be noted that the specific structure, the number of the settings and the setting positions of the fourth roller passing device 308, the fourth deviation correcting device 309 and the fourth tension control device 310 are not limited in the present invention, and may be adjusted according to actual needs by those skilled in the art.
With continued reference to fig. 3, as a possible embodiment, a fifth roller passing device 311, a fifth deviation correcting device 312, and a fifth tension control device 313 are disposed between the second film unreeling module 302 and the lithium foil calendaring device 304, so as to realize smooth conveying of the second film 19, and ensure that the second film 19 does not deviate and break during conveying. It should be noted that the specific structures, the number of the setting and the setting positions of the fifth roller device 311, the fifth deviation correcting device 312 and the fifth tension control device 313 are not limited in the present invention, and may be adjusted according to actual needs by those skilled in the art.
With continued reference to fig. 3, as a possible embodiment, a sixth roller passing device 314, a sixth deviation correcting device 315 and a sixth tension control device 316 are disposed between the lithium strip unreeling module 303 and the lithium foil calendaring device 304, so as to realize smooth conveying of the lithium strip 17 and ensure that the lithium strip 17 is not deviated and broken in the conveying process. It should be noted that the specific structure, the number of the arrangement and the arrangement positions of the sixth roller passing device 314, the sixth deviation rectifying device 315 and the sixth tension control device 316 are not limited in the present invention, and may be adjusted according to actual needs by those skilled in the art.
With continued reference to fig. 3, as a possible embodiment, a tachometer roll 323 is further disposed between the lithium strip unreeling module 303 and the lithium foil calendaring device 304, where the tachometer roll 323 is disposed upstream of the lithium foil calendaring device 304, and the tachometer roll 323 is used to detect a conveying speed of the lithium strip 17 when entering the lithium foil calendaring device 304, so as to control the conveying speed of the lithium strip 17 to be at a proper speed, so that the density of the lithium foil is ensured after the lithium strip 17 is calendared into the lithium foil, and further, the lithium supplementing amount of the pre-lithiated electrode film 23 is ensured to meet the production standard.
With continued reference to fig. 3, as a possible embodiment, a seventh roller passing device 317, a seventh deviation correcting device 318, and a seventh tension control device 319 are disposed between the lithium foil rolling device 304 and the first film rolling module 305, so as to implement smooth rolling of the first film 18, and ensure that the first film 18 does not deviate and break during the rolling process. The specific structure, the number of the settings and the setting positions of the seventh roller passing device 317, the seventh deviation correcting device 318 and the seventh tension control device 319 are not limited in the present invention, and may be adjusted according to actual needs by those skilled in the art.
With continued reference to fig. 3, as a possible embodiment, an eighth roller passing device 320, an eighth deviation correcting device 321 and an eighth tension control device 322 are disposed between the lithium foil rolling device 304 and the second film rolling module 307, so as to implement smooth rolling of the second film 19, and ensure that the second film 19 is not deviated and continuously taken in the rolling process. It should be noted that the specific structure, the number of the settings and the setting positions of the eighth roller passing device 320, the eighth deviation rectifying device 321 and the eighth tension control device 322 are not limited in the present invention, and may be adjusted according to actual needs by those skilled in the art.
With continued reference to fig. 1, as one possible embodiment, a ninth roller passing device 401 and a ninth tension control device 402 are provided between the first pass composite assembly 4 and the second pass composite assembly 5. It should be noted that, the specific structure, the number of the setting and the specific setting positions of the ninth roller passing device 401 and the ninth tension control device 402 are not limited in the present invention, and those skilled in the art may select and adjust the distance between the first composite member 4 and the second composite member 5 according to the production needs. All such changes in the specific structure and number do not depart from the basic principles of the invention and are intended to be within the scope thereof.
With continued reference to fig. 1, as one possible embodiment, a tenth roller passing device 501 and a tenth tension control device 502 are provided between the second compounding assembly 5 and the compacting assembly 6. It should be noted that the specific structure, the number of the setting and the specific setting positions of the tenth roller passing device 501 and the tenth tension control device 502 are not limited in the present invention, and those skilled in the art may select and adjust the distance between the second pass composite assembly 5 and the compacting assembly 6 according to the production needs. All such changes in the specific structure and number do not depart from the basic principles of the invention and are intended to be within the scope thereof.
As a possible embodiment, the first composite member 4 includes a first composite press roll and a second composite press roll, and the final first electrode film 15 and lithium foil are calender-compounded through a roll gap between the first composite press roll and the second composite press roll to form the first composite film sheet 21. It should be noted that, the specific structures of the first composite press roll and the second composite press roll are not limited in the present invention, and those skilled in the art can select a composite press roll with a specific structure according to the production needs to use the composite press roll; meanwhile, the invention does not limit the specific size of the roll gap between the first composite press roll and the second composite press roll, and the invention can be set by a person skilled in the art according to actual production requirements.
As one possible embodiment, the second pass composite assembly 5 comprises a third composite press roll and a fourth composite press roll, the final second electrode film 16 and the first pass composite membrane 21 being calender compounded through a roll gap between the third composite press roll and the fourth composite press roll to form a second pass composite membrane 22. It should be noted that, the specific structures of the third composite press roll and the fourth composite press roll are not limited in the present invention, and those skilled in the art may select a composite press roll with a specific structure according to the production needs to use the composite press roll; meanwhile, the invention does not limit the specific size of the roll gap between the third composite press roll and the fourth composite press roll, and the invention can be set by a person skilled in the art according to actual production requirements.
As a possible embodiment, the compacting assembly 6 comprises a first compacting roller and a second compacting roller, the second composite membrane 22 being compacted through a nip between said first compacting roller and said second compacting roller to form a pre-lithiated electrode film 23. It should be noted that the specific structures of the first compacting roller and the second compacting roller are not limited in the present invention, and those skilled in the art may select a compacting roller with a specific structure according to production needs to use the compacting roller; meanwhile, the invention does not limit the specific size of the roll gap between the first compacting roll and the second compacting roll, and the invention can be set by a person skilled in the art according to actual production requirements.
With continued reference to fig. 1, as a possible embodiment, the dry prelithiation roll-in film forming apparatus further includes a film collecting device 7, where the film collecting device 7 is disposed downstream of the compacting member 6 and is configured to be capable of performing a rolling process on the prelithiation electrode film 23. It should be noted that, the specific structure of the film collecting device 7 is not limited in the present invention, so long as the film collecting device 7 can recover and roll the pre-lithiated electrode film 23, and a person skilled in the art can select the film collecting device 7 with a corresponding structure according to the production requirement.
Further, as a possible embodiment, the film collecting device 7 is disposed in a cooling box, and the cooling box cools the wound pre-lithiated electrode film 23, so that the pre-lithiated electrode film 23 is convenient to store. It should be noted that the present invention is not limited to the specific structure and cooling manner of the cooling tank, and those skilled in the art may select and adjust the cooling tank according to the needs.
Since the second composite membrane 22 is heated up when the compacting unit 6 is compacted, the temperature of the pre-lithiated electrode film 23 is high, and in order to solve the problem, the dry pre-lithiated roll forming apparatus further includes a cooling device 8, wherein the cooling device 8 is disposed between the compacting unit 6 and the film collecting device 7, and is configured to be capable of performing cooling treatment on the pre-lithiated electrode film 23 compacted by the compacting unit 6. It should be noted that the specific structure and cooling manner of the cooling device 8 are not limited in the present invention, and those skilled in the art may select and adjust the cooling device according to actual production needs.
With continued reference to fig. 1, as a possible embodiment, a traction roller 10 is further disposed between the compacting assembly 6 and the cooling device 8, and the traction roller 10 is used for drawing the pre-lithiated electrode film 23 to be smoothly and uniformly conveyed into the cooling device 8, and meanwhile, the pre-lithiated electrode film 23 can be effectively prevented from being broken during the conveying process.
With continued reference to fig. 1, as a possible embodiment, the dry pre-lithiation roll forming apparatus further includes a thickness detection device 9, wherein the thickness detection device 9 is disposed between the cooling device 8 and the film collecting device 7, and is configured to enable thickness detection of the pre-lithiated electrode film 23 after the cooling treatment by the cooling device 8. The thickness measuring device 9 of the present invention is not limited in specific structure, and one skilled in the art may select thickness measuring devices of different structures and different specifications according to actual needs.
As a possible embodiment, a roller passing device and a tension control device are further arranged between the compacting assembly 6 and the traction roller 10 to convey and tension control the pre-lithiated electrode film 23, and prevent the pre-lithiated electrode film 23 from interrupting the belt during the conveying process. A person skilled in the art can select a corresponding number of said over-roll devices and said tension control devices to use depending on the distance between the compacting assembly 6 and the pull roll 10.
As a possible embodiment, a roller passing device and a deviation correcting device are further arranged between the thickness detecting device 9 and the film collecting device 7, so that the pre-lithiated electrode film 23 is not deviated during conveying and rolling, and the pre-lithiated electrode film 23 is rolled smoothly. The person skilled in the art can select a corresponding number of the roller passing devices and the deviation correcting devices according to the distance between the thickness detecting device 9 and the film collecting device 7 for use, and can adjust the specific installation positions of the roller passing devices and the deviation correcting devices according to actual needs.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (10)
1. The dry-method pre-lithiation rolling film forming equipment is characterized by comprising a first rolling film forming assembly, a second rolling film forming assembly, a lithium foil rolling assembly, a first composite assembly, a second composite assembly and a compacting assembly;
The first rolling film forming assembly is arranged to be capable of rolling and compounding the premix into a first electrode film, the lithium foil rolling assembly is arranged to be capable of rolling and compounding the lithium foil, the first composite assembly is arranged between the first rolling film forming assembly and the lithium foil rolling assembly, and the first composite assembly is arranged to be capable of rolling and compounding the first electrode film and the lithium foil to form a first composite membrane;
the second rolling film forming assembly is arranged to be capable of rolling and compounding the premix into a second electrode film, the second composite assembly is arranged between the first composite assembly and the second rolling film forming assembly, and the second composite assembly is arranged to be capable of rolling and compounding the lithium foil side of the first composite film sheet and the second electrode film to form a second composite film sheet;
the compaction assembly is disposed downstream of the second pass composite assembly and is configured to enable compaction of the second pass composite membrane sheet to form a pre-lithiated electrode film.
2. The dry prelithiation roll forming device of claim 1, wherein the first roll forming assembly comprises a first premix feed apparatus, a first roll forming apparatus, and a first roll thinning apparatus;
The first roll forming device is arranged to be capable of pressing the premix released by the first premix discharging device into an initial first electrode film, and the first roll thinning device is arranged to be capable of carrying out thinning treatment on the initial first electrode film to form a final first electrode film.
3. The dry prelithiation roll forming equipment according to claim 2, wherein a plurality of roll passing devices, a trimming device, a deviation correcting device and a tension control device are arranged between the first roll forming device and the first roll thinning device; and/or
And a plurality of roller passing devices, a trimming device, a deviation correcting device and a tension control device which are sequentially arranged are arranged between the first rolling thinning device and the first composite assembly.
4. The dry prelithiation roll forming device of claim 1, wherein the second roll forming assembly comprises a second premix feed apparatus, a second roll forming apparatus, and a second roll thinning apparatus;
the second roll forming device is arranged to be capable of pressing the premix released by the second premix discharging device into an initial second electrode film, and the second roll thinning device is arranged to be capable of carrying out thinning treatment on the initial second electrode film to form a final second electrode film.
5. The dry prelithiation roll forming equipment according to claim 4, wherein a plurality of roll passing devices, a trimming device, a deviation correcting device and a tension control device are arranged between the second roll forming device and the second roll thinning device; and/or
At least one roller passing device is arranged between the second rolling thinning device and the second composite component.
6. The dry prelithiation roll-in film forming apparatus of claim 1, wherein the lithium foil calendaring assembly comprises a first film unwind module, a second film unwind module, a lithium tape unwind module, a lithium foil calendaring device, a first film wind-up module, a lithium foil transport module, and a second film wind-up module;
the first film unreeling module, the second film unreeling module and the lithium belt unreeling module are jointly arranged to clamp a lithium belt between the first film and the second film and are conveyed into the lithium foil calendaring device for calendaring treatment so as to form lithium foil;
the first film rolling module is arranged at the downstream of the lithium foil rolling device and is arranged to be capable of recycling the rolled first film;
The lithium foil conveying module is arranged at the downstream of the lithium foil calendaring device and is arranged to be capable of conveying the lithium foil and the second film to the first composite component together for calendaring and compositing;
the second film winding module is arranged at the downstream of the first composite component and is arranged to be capable of recycling the second film after calendaring and compositing.
7. The dry prelithiation roll forming device of any one of claims 1 to 6, wherein a roll passing means and a tension control means are provided between the first and second composite assemblies; and/or
And a roller passing device and a tension control device are arranged between the second composite assembly and the compaction assembly.
8. The dry prelithiation roll film forming apparatus as set forth in any one of claims 1 to 6, further comprising a film collecting device,
the film collecting device is arranged at the downstream of the compacting component and is arranged to be capable of carrying out rolling treatment on the pre-lithiated electrode film.
9. The dry prelithiation roll film forming apparatus as set forth in claim 8, further comprising a cooling device,
The cooling device is arranged between the compacting component and the film collecting device and is arranged to be capable of cooling the pre-lithiated electrode film compacted by the compacting component.
10. The dry prelithiation roll film forming apparatus as set forth in claim 9, further comprising a thickness detecting device,
the thickness detection device is arranged between the cooling device and the film collecting device, and is arranged to be capable of detecting the thickness of the pre-lithiated electrode film after being cooled by the cooling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210443206.6A CN116995183A (en) | 2022-04-25 | 2022-04-25 | Dry-method pre-lithiation rolling film forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210443206.6A CN116995183A (en) | 2022-04-25 | 2022-04-25 | Dry-method pre-lithiation rolling film forming equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116995183A true CN116995183A (en) | 2023-11-03 |
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|---|---|---|---|
| CN202210443206.6A Pending CN116995183A (en) | 2022-04-25 | 2022-04-25 | Dry-method pre-lithiation rolling film forming equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN116995183A (en) |
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2022
- 2022-04-25 CN CN202210443206.6A patent/CN116995183A/en active Pending
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