CN210614173U - Gravure coating device for preparing large-width ultrathin metal lithium strip - Google Patents
Gravure coating device for preparing large-width ultrathin metal lithium strip Download PDFInfo
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- CN210614173U CN210614173U CN201921358228.2U CN201921358228U CN210614173U CN 210614173 U CN210614173 U CN 210614173U CN 201921358228 U CN201921358228 U CN 201921358228U CN 210614173 U CN210614173 U CN 210614173U
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- 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
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- 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
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Abstract
The utility model discloses a gravure coating device in preparation big ultra-thin metal lithium area of broad width belongs to lithium metal material preparation technical field. The preparation device comprises a lithium liquid melting tank, a micro-concave roller, an unreeling device, a substrate back roller, a hot pressing device and a reeling device; the lower part of the micro-concave roller is immersed in lithium liquid in a lithium liquid melting tank; a hot scraper is arranged on one side of the micro-concave roller, and the end part of the hot scraper is in contact with the roller surface of the micro-concave roller; the base material back roller is arranged above the micro-concave roller in an inclined mode; unwinding device sets up on one side of substrate backing roll, the coiling mechanism sets up in the top of substrate backing roll, and hot press unit sets up between substrate backing roll and coiling mechanism, and the substrate on the unwinding device twines on the coiling mechanism behind substrate backing roll and hot press unit. The utility model has the advantages of simple structure and reasonable design, effectively improved the homogeneity of coating, can realize that automated production thickness is 1-50 um's ultra-thin metal lithium area, improved work efficiency and product quality greatly.
Description
Technical Field
The utility model relates to a lithium metal material preparation technical field, concretely relates to gravure coating unit in ultra-thin metal lithium area of preparation broad width.
Background
With the rapid development of new energy automobiles and aviation unmanned aerial vehicles, metal lithium is produced as a high energy density material. At present, when metal lithium is used as a negative electrode material to be matched with a positive electrode material, the energy density of a lithium battery cannot be improved due to high lithium content, so that an ultrathin lithium negative electrode has become a trend of improving the energy density.
At present, the lithium produced in batch has smaller bandwidth, more complex process and thicker thickness which is basically more than 50um, and the uniformity of the surface thickness is poorer. The effective thickness of the lithium belt can be made to be 10-20um in Tianjin, but a surface lubricant needs to be added for assistance in the production process of the lithium belt, so that a layer of film is attached to the surface of the obtained metal lithium belt, and the lubricant is expensive and affects the performance of the metal lithium, so that the industrial requirement and the service performance of the ultrathin metal lithium cannot be met. In the prior art, some processes are characterized in that a lithium ingot is melted and then rolled by a casting method, a dip plating method or an evaporation method to obtain an ultrathin lithium belt, and similar methods are complex to control in the operation process and have higher operation requirements, and the final rolling process is basically indistinguishable from the production of the traditional metal lithium belt and has poor innovation. In addition, the other process is that after lithium is melted, the melted lithium is extruded and sprayed to the base material through an argon gas or an extrusion device, and the ultrathin metal lithium belt is obtained by controlling the extrusion speed and the moving speed of the base material, so that the method has higher debugging requirements on matching of the extrusion speed and the moving speed of the base material, is difficult to debug and has higher cost; in addition, since lithium metal is sprayed by being powdered, the powdered lithium is highly reactive and is easily exploded, and the risk is high, so that the possibility of industrial production is low.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a prepare gravure coating device in big ultra-thin metal lithium area of broad width, this gravure coating device simple structure, reasonable in design have effectively improved the homogeneity of coating, can realize automatic, continuity production metal lithium area, have improved work efficiency and product quality greatly, have effectively solved among the prior art the problem that ultra-thin metal lithium area preparation degree of difficulty is big, with high costs and quality is poor.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a gravure coating device for preparing a large-width ultrathin metal lithium belt comprises a lithium liquid melting tank, a micro concave roller, an unreeling device, a substrate back roller, a hot pressing device and a reeling device; the lower part of the micro-concave roller is immersed into the lithium liquid in the lithium liquid melting tank and is used for transferring the lithium liquid in the lithium liquid melting tank to a substrate; a hot scraper for scraping lithium liquid is arranged on one side of the micro-concave roller, and the end part of the hot scraper is in contact with the roller surface of the micro-concave roller; the substrate back roller is arranged obliquely above the micro-concave roller; the unwinding device is arranged on one side of the substrate back roll, the winding device is arranged above the substrate back roll, the hot pressing device is arranged between the substrate back roll and the winding device, and the substrate on the unwinding device is wound on the winding device after passing through the substrate back roll and the hot pressing device.
As a preferred embodiment of the present invention, the unwinding device includes an unwinding roller for winding the substrate to be processed, an unwinding deviation corrector, an unwinding tension detecting roller and a first guide roller, and the unwinding deviation corrector is disposed between the unwinding tension detecting roller and the unwinding roller; the first guide roller is arranged between the unreeling tension detection roller and the substrate back roller; the base material on the unreeling roller sequentially passes through the unreeling deviation corrector, the unreeling tension detection roller, the first guide roller, the base material back roller and the hot pressing device and then is wound on the reeling device.
As a preferred embodiment of the present invention, the winding device includes a winding roller for winding the ultra-thin metal lithium ribbon, a winding deviation corrector, a winding tension detection roller, and a second guide roller, and the winding deviation corrector is disposed between the winding tension detection roller and the winding roller; the second guide roller set up in rolling tension detects the roller with between the hot press unit, through the compound ultra-thin metal lithium area that obtains pass through in proper order twine behind rolling tension detects roller and the rolling deviation rectifier on the wind-up roll.
As the utility model discloses preferred embodiment, hot press unit includes roller and hot pressing lower roll in the hot pressing, roller and hot pressing lower roll parallel arrangement from top to bottom in the hot pressing.
As the utility model discloses preferred embodiment, the utility model discloses a device is still including shaping device and third deflector roll in advance, the third deflector roll sets gradually with shaping device in advance between substrate dorsal bar and the hot press unit, shaping device includes roller and the lower roll of shaping in advance in the shaping, roller and the lower roll parallel arrangement of shaping in advance.
As a preferred embodiment of the present invention, the apparatus of the present invention further comprises a sealed working chamber and an inert gas supply device for supplying an inert gas to the sealed working chamber; the lithium liquid melting box, the micro concave roller, the unreeling device, the substrate back roller, the reeling device, the hot pressing device and the inert gas supply device are all arranged in the sealed working chamber. Wherein the inert gas supplied by the inert gas supply device is argon.
As a preferred embodiment of the present invention, heating devices are disposed in the lithium liquid melting tank, the micro concave roller and the hot scraper; the lithium liquid melting box, the micro concave roller and the hot scraper are all made of copper, and stainless steel films are plated on the inner surface of the lithium liquid melting box and the outer surfaces of the micro concave roller and the hot scraper.
As a preferred embodiment of the present invention, the substrate backing roll is made of high temperature resistant rubber.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the gravure coating device for preparing the large-width ultrathin metal lithium belt transfers the lithium liquid in a molten state to the surface of a base material by utilizing the groove on the micro-concave roller and adjusting the winding and unwinding speed, and then obtains the ultrathin metal lithium belt with uniform thickness of 1-50 mu m through the pre-shaping and hot-pressing procedures; in addition, the gravure coating device of the utility model has simple structure and reasonable design, effectively improves the coating uniformity, can realize the automatic and continuous production of large-width ultrathin metal lithium belts, compared with the extrusion method in the prior art, does not need large pressure equipment to extrude the lithium ingot, has less rigid function requirement on the equipment in the production process, thereby ensuring that the width of the produced lithium belt is not limited; compared with the dip plating method in the prior art, a large amount of metal lithium liquid does not need to be melted in advance, the phenomenon that the substrate is ignited due to the fact that the substrate is immersed into the lithium liquid to enable the large amount of lithium liquid to be gathered is avoided, the safety is high, the substrate does not need to be immersed into the lithium liquid, and the influence of high temperature on the substrate is effectively reduced. The utility model discloses a little concave roller shifts lithium liquid to the substrate on, has effectively improved the homogeneity of coating, has improved work efficiency and product quality simultaneously greatly, has effectively solved among the prior art ultra-thin metal lithium area manufacturing cost height, technological process complicacy, lithium area surface homogeneity poor and production efficiency low grade problem.
Drawings
Fig. 1 is a schematic structural diagram of a gravure coating device for preparing a large-width ultrathin lithium metal strip according to the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1 according to the present invention;
the reference numbers illustrate: 1. unwinding rollers; 2. unwinding deviation rectifying device; 3. an unwinding tension detection roller; 4. a first guide roller; 5. a micro-concave roller; 6. a hot scraper; 7. a substrate backing roll; 8. a third guide roller; 9. pre-shaping an upper roller; 10. pre-shaping the lower roller; 11. hot pressing the upper roller; 12. hot pressing the lower roller; 13. a second guide roller; 14. a winding tension detection roller; 15. rolling a deviation rectifier; 16. a wind-up roll; 17. a lithium liquid melting tank; 18. sealing the working chamber; 19. a lithium material roller; 20. a feed roller; 21. and a fourth guide roller.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, a gravure coating device for preparing big ultra-thin metal lithium area of broad width including be used for with the molten lithium liquid melting tank 17 of lithium metal spindle, be used for shifting the lithium liquid to substrate surface's little concave roller 5, be used for supplying the unwinding device of substrate, be used for with little concave roller 5 complex substrate backing roll 7, be used for extending the hot press unit who presses evenly and be used for the coiling mechanism to the rolling of ultra-thin metal lithium area to the lithium liquid on the substrate.
Specifically, the interior of the lithium liquid melting tank 17 is provided with a heating device for melting a lithium metal ingot. Preferably, the lithium liquid melting tank 17 is made of copper, and the inner surface of the lithium liquid melting tank is plated with a stainless steel film, so that the stability of the molten state of the lithium liquid metal, the uniformity of heat distribution and the instantaneity of heat conduction can be effectively guaranteed. Referring to fig. 2, a plurality of grooves are uniformly formed on the roll surface of the micro concave roll 5 and are axially parallel to the micro concave roll 5, the grooves are arranged at intervals, and the grooves are used for accommodating lithium liquid so as to transfer the lithium liquid to the surface of a substrate; preferably, the cross-section of the groove is rectangular or semi-circular. The lower part of the micro-concave roller 5 is immersed in the lithium liquid melting tank 17 for transferring the lithium liquid in the lithium liquid melting tank 17 to the surface of the substrate. One side of the micro-concave roller 5 is provided with a hot scraper 6 for scraping lithium liquid on the surface of the micro-concave roller 5, and the end part of the hot scraper 6 is in contact with the roller surface of the micro-concave roller 5 in a fitting manner, but does not interfere with each other, so that the redundant lithium liquid on the surface of the micro-concave roller 5 can be completely scraped. Because the lithium liquid volume on little concave roller 5 and the hot scraper 6 is less, leads to lithium liquid to solidify on little concave roller 5 and hot scraper 6 easily, and the inside of little concave roller 5 and hot scraper 6 all is provided with heating device, can make the lithium liquid on little concave roller 5 and the hot scraper 6 remain the molten state and have certain stickness all the time through heating little concave roller 5 and hot scraper 6. Similarly, the micro-concave roller 5 and the hot scraper 6 are both made of copper, and the outer surfaces of the micro-concave roller 5 and the hot scraper 6 are both plated with stainless steel films to ensure the stability of the molten state of the lithium metal liquid, the uniformity of heat distribution and the instantaneity of heat conduction. The base material back roller 7 is arranged obliquely above the micro-concave roller 5, and the roller surface of the base material back roller 7 is attached to the roller surface of the micro-concave roller 5 during production; preferably, the substrate backing roller 7 is made of high temperature resistant rubber, so that the micro-concave roller 5 can slightly deform the substrate backing roller 7 during production, thereby ensuring that the lithium liquid in the grooves of the micro-concave roller 5 is completely transferred to the surface of the substrate. Unwinding device sets up on one side of substrate backing roll 7, and the coiling mechanism sets up in the top of substrate backing roll 7, and hot press unit sets up between substrate backing roll 7 and coiling mechanism, and the substrate on the unwinding device twines on the coiling mechanism behind substrate backing roll 7 and hot press unit. According to the above technical scheme, the utility model discloses an adopt the recess on the little concave roller 5 to shift the lithium liquid in the lithium liquid melting box 17 to the substrate surface, rethread hot scraper 6 strikes off the unnecessary lithium liquid in little concave roller 5 surface, and rethread hot pressing device prolongs the pressure evenly to the lithium liquid on the substrate, accomplishes the preparation in ultra-thin metal lithium area from this, and the process is few, easy operation, can realize automatic continuity production, is favorable to reduction in production cost.
More specifically, the unwinding device comprises an unwinding roller 1 for winding the substrate to be processed, an unwinding deviation corrector 2, an unwinding tension detection roller 3 and a first guide roller 4, wherein the unwinding deviation corrector 2 is arranged between the unwinding tension detection roller 3 and the unwinding roller 1; the first guide roller 4 is arranged between the unwinding tension detection roller 3 and the substrate back roller 7; the base material on the unreeling roller 1 sequentially passes through the unreeling deviation corrector 2, the unreeling tension detection roller 3, the first guide roller 4 and the base material back roller 7 and then is wound on the reeling device. The base material is an oxidation-resistant recyclable foil which has a certain affinity with lithium metal and does not react with lithium metal, and includes but is not limited to stainless steel foil, copper foil, steel foil, iron foil and other materials. Similarly, the winding device comprises a winding roller 16 for winding the ultrathin lithium metal strip, a winding deviation corrector 15, a winding tension detection roller 14 and a second guide roller 13, wherein the winding deviation corrector 15 is arranged between the winding tension detection roller 14 and the winding roller 16, and the second guide roller 13 is arranged between the winding tension detection roller 14 and the hot-pressing device; the ultra-thin metal lithium strip obtained by compounding sequentially passes through a hot pressing device, a second guide roller 13, a winding tension detection roller 14 and a winding deviation rectifier 15 and then is wound on a winding roller 16.
Specifically, the hot-pressing device comprises an upper hot-pressing roller 11 and a lower hot-pressing roller 12, the upper hot-pressing roller 11 and the lower hot-pressing roller 12 are arranged in parallel up and down, and a gap is reserved between the upper hot-pressing roller 11 and the lower hot-pressing roller 12, and the width of the gap is equal to the sum of the thickness of the base material and the expected coating thickness. The inside of roller 11 and hot pressing lower roll 12 all is provided with heating device on the hot pressing, heats through roller 11 and hot pressing lower roll 12 on to the hot pressing, can effectively avoid because of the lithium liquid on substrate surface is cooled off solidification and leads to can't prolong and press evenly to guarantee that the lithium liquid of substrate keeps the molten state and by even flat ground compound to the substrate on the surface. Further, in order to avoid the adhesion of the lithium solution to the upper hot-pressing roller 11 and the lower hot-pressing roller 12, the surfaces of the upper hot-pressing roller 11 and the lower hot-pressing roller 12 may be subjected to a special surface coating treatment, such as copper plating, nickel plating, aluminum oxide plating, etc., but not limited to the above materials, so as to ensure that the lithium solution does not cause pollution to the upper hot-pressing roller 11 and the lower hot-pressing roller 12 and avoid the waste of the lithium material, which is beneficial to reducing the production cost.
Because little concave roller 5 can extrude substrate backing roll 7 in process of production, just so lead to substrate on the substrate backing roll 7 easily to produce crease or unevenness because of the extrusion of recess, in order to avoid the slight deformation of substrate to exert an influence to lithium area performance, the utility model discloses a device is still including the third deflector roll 8 that carries out the shaping in advance of shaping device and be used for tensioning the substrate to the substrate, and third deflector roll 8 sets gradually between substrate backing roll 7 and hot press unit with shaping device in advance, and through the cooperation of third deflector roll 8 and shaping device in advance, can carry out the shaping in advance with the substrate of slight deformation, make the substrate keep the planarization to in order to follow-up hot pressing process's going on. Specifically, the pre-shaping device comprises an upper pre-shaping roller 9 and a lower pre-shaping roller 10 which can rotate relatively, the upper pre-shaping roller 9 and the lower pre-shaping roller 10 are arranged in parallel up and down, and a base material can pass through between the upper pre-shaping roller 9 and the lower pre-shaping roller 10.
The preparation device of the utility model also comprises a sealed working chamber 18 and an inert gas supply device used for providing inert gas for the sealed working chamber 18; the lithium liquid melting box 17, the micro concave roller 5, the unreeling device, the substrate back roller 7, the hot pressing device, the pre-shaping device, the reeling device and the inert gas supply device are all arranged in the sealed working chamber 18, so that the lithium liquid is prevented from being oxidized and the safety of the lithium liquid is ensured. Preferably, the inert gas supplied by the inert gas supply means is argon gas. The utility model discloses still including the material feeding unit who is used for melting case 17 to lithium liquid and carrying lithium material, this material feeding unit is including the lithium material roller 19 that sets gradually, two feed rolls 20 and two fourth deflector rolls 21, and the lithium material area on the lithium material roller 19 stretches into lithium liquid and melts the case 17 after passing the clearance between two feed rolls 20 and two fourth deflector rolls 21 in proper order, melts case 17 and constantly carries the lithium material area (also can be the lithium stick) to lithium liquid under the transmission of feed roll 20.
The working process of the preparation device is as follows: firstly, a base material passes through roll gaps between an unreeling roller 1, an unreeling deviation corrector 2, an unreeling tension detection roller 3, a guide roller, a micro-concave roller 5 and a base material back roller 7 respectively, then passes through a third guide roller 8, a pre-shaping device, a hot pressing device, a reeling tension detection roller 14, a reeling deviation corrector 15 and a reeling roller 16, after threading of the base material is completed, the distance between a hot scraper 6 and the micro-concave roller 5 is adjusted firstly, so that the end part of the hot scraper 6 is in contact with the roll surface of the micro-concave roller 5 but not interfered with each other, so as to scrape redundant lithium liquid on the surface of the micro-concave roller 5, then the roll gap distance between the base material back roller 7 and the micro-concave roller 5 is adjusted, so that the micro-concave roller 5 extrudes the base material back roller 7, the base material back roller 7 is slightly deformed, so as to ensure that the lithium liquid in the groove of the micro-concave roller 5 can be completely transferred to the surface of the base material, then a lithium, melting and guaranteeing the molten state of lithium metal liquid and the viscosity of lithium liquid to the lithium ingot, heating little concave roller 5 and hot scraper 6 to 190 ~ 230 ℃, heat hot press unit to 100 ~ 130 ℃, later start little concave roller 5 and make it constantly dip in and get lithium liquid and shift the lithium liquid in the recess to the substrate surface on, the surface scribbles the substrate of lithium metal liquid and carries out the plastic in advance through shaping device in advance after the cooling, in order to guarantee the planarization of substrate, then through hot press unit hot pressing, make the lithium liquid on the substrate evenly level by the extension, start wind-up roll 16 simultaneously and constantly adjust its rolling speed, thereby can obtain ultra-thin metal lithium area.
The utility model also provides a method for preparing big ultra-thin metal lithium area of broad width, it adopts as above gravure coating device prepare, mainly pass the substrate behind between little concave roller 5 and substrate backing roll 7, strike off the unnecessary lithium liquid in little concave roller 5 surface through hot scraper 6, then plastic in advance and hot pressing process come to prolong the pressure evenly to the lithium liquid on the substrate, obtain ultra-thin metal lithium area after natural cooling, specifically include following step:
a. sequentially passing the base material on the unwinding device through a base material back roll 7 and a hot pressing device, winding the base material on the winding device, and tensioning the base material;
b. preheating the micro-concave roller 5 and the hot scraper 6 to 190-230 ℃ to ensure that the lithium liquid on the micro-concave roller 5 and the hot scraper 6 keeps a molten state and has certain viscosity; preheating a hot-pressing device to 100-130 ℃ so that the hot-pressing device can carry out smooth and uniform rolling on the lithium liquid on the base material; heating the lithium liquid in the lithium liquid melting tank 17 to 190-400 ℃ under inert gas to keep the lithium liquid in a molten state;
c. starting the micro-concave roller 5, the unwinding roller 1 and the winding roller 16, adjusting the winding speed, tensioning the substrate and moving the substrate towards the winding roller 16, uniformly compounding the lithium liquid on the micro-concave roller 5 onto the surface of the substrate in the moving process, uniformly extending the lithium liquid on the substrate on the surface of the substrate when the substrate passes through the hot pressing device, and winding to obtain the ultrathin metal lithium belt with the single surface coated with lithium.
Therefore, it can be seen that preparation ultra-thin metal lithium belt's gravure coating unit receive through utilizing recess and adjustment on little concave roller 5 and unreel speed and transfer to the substrate with molten state's lithium liquid on the surface, thereby the rethread plastic in advance and hot pressing process obtain even unanimity, thickness is 1 ~ 50 mu m's ultra-thin metal lithium belt, the process is few, easy operation, the homogeneity of coating has effectively been improved, can realize the automation, the ultra-thin metal lithium belt of the big broad width of continuity production, work efficiency and product quality have been improved greatly.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (8)
1. The utility model provides a preparation broad width ultra-thin metal lithium area's gravure coating device which characterized in that: the device comprises a lithium liquid melting box, a micro concave roller, an unreeling device, a substrate back roller, a hot pressing device and a reeling device; the lower part of the micro-concave roller is immersed into the lithium liquid in the lithium liquid melting tank and is used for transferring the lithium liquid in the lithium liquid melting tank to a substrate; a hot scraper for scraping lithium liquid is arranged on one side of the micro-concave roller, and the end part of the hot scraper is in contact with the roller surface of the micro-concave roller; the substrate back roller is arranged obliquely above the micro-concave roller; the unwinding device is arranged on one side of the substrate back roll, the winding device is arranged above the substrate back roll, the hot pressing device is arranged between the substrate back roll and the winding device, and the substrate on the unwinding device is wound on the winding device after passing through the substrate back roll and the hot pressing device.
2. The gravure coating device for manufacturing large-width ultra-thin metallic lithium ribbon as claimed in claim 1, wherein: the unwinding device comprises an unwinding roller for winding a substrate to be processed, an unwinding deviation corrector, an unwinding tension detection roller and a first guide roller, wherein the unwinding deviation corrector is arranged between the unwinding tension detection roller and the unwinding roller; the first guide roller is arranged between the unreeling tension detection roller and the substrate back roller; the base material on the unreeling roller sequentially passes through the unreeling deviation corrector, the unreeling tension detection roller, the first guide roller, the base material back roller and the hot pressing device and then is wound on the reeling device.
3. The gravure coating device for manufacturing a large-width ultra-thin metallic lithium ribbon as claimed in claim 1 or 2, wherein: the winding device comprises a winding roller for winding the ultrathin metal lithium belt, a winding deviation corrector, a winding tension detection roller and a second guide roller, wherein the winding deviation corrector is arranged between the winding tension detection roller and the winding roller; the second guide roller set up in rolling tension detects the roller with between the hot press unit, through the compound ultra-thin metal lithium area that obtains pass through in proper order twine behind rolling tension detects roller and the rolling deviation rectifier on the wind-up roll.
4. The gravure coating device for manufacturing a large-width ultra-thin metallic lithium ribbon as claimed in claim 1 or 2, wherein: the hot pressing device comprises an upper hot pressing roller and a lower hot pressing roller, and the upper hot pressing roller and the lower hot pressing roller are arranged in parallel up and down.
5. The gravure coating device for manufacturing a large-width ultra-thin metallic lithium ribbon as claimed in claim 1 or 2, wherein: still including pre-shaping device and third deflector roll, the third deflector roll sets gradually with pre-shaping device between substrate dorsal bar and the hot press unit, pre-shaping device is including pre-shaping roller and pre-shaping lower roll, pre-shaping roller and pre-shaping lower roll parallel arrangement from top to bottom.
6. The gravure coating device for manufacturing a large-width ultra-thin metallic lithium ribbon as claimed in claim 1 or 2, wherein: the device also comprises a sealed working chamber and an inert gas supply device for supplying inert gas to the sealed working chamber; the lithium liquid melting box, the micro concave roller, the unreeling device, the substrate back roller, the reeling device, the hot pressing device and the inert gas supply device are all arranged in the sealed working chamber.
7. The gravure coating device for manufacturing a large-width ultra-thin metallic lithium ribbon as claimed in claim 1 or 2, wherein: heating devices are arranged in the lithium liquid melting box, the micro concave roller and the hot scraper; the lithium liquid melting box, the micro concave roller and the hot scraper are all made of copper, and stainless steel films are plated on the inner surface of the lithium liquid melting box and the outer surfaces of the micro concave roller and the hot scraper.
8. The gravure coating device for manufacturing a large-width ultra-thin metallic lithium ribbon as claimed in claim 1 or 2, wherein: the base material back roll is made of high-temperature-resistant rubber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921358228.2U CN210614173U (en) | 2019-08-20 | 2019-08-20 | Gravure coating device for preparing large-width ultrathin metal lithium strip |
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| CN201921358228.2U CN210614173U (en) | 2019-08-20 | 2019-08-20 | Gravure coating device for preparing large-width ultrathin metal lithium strip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086623A (en) * | 2020-09-04 | 2020-12-15 | 捷威动力工业嘉兴有限公司 | Device for preparing three-dimensional lithium metal cathode |
| WO2021032035A1 (en) * | 2019-08-20 | 2021-02-25 | 北京卫蓝新能源科技有限公司 | Gravure coating device for preparing large-width ultrathin metal lithium strip and method therefor |
| CN112467084A (en) * | 2020-11-23 | 2021-03-09 | 惠州赣锋锂电科技有限公司 | Lithium ion battery negative pole piece lithium supplementing device and lithium supplementing method thereof |
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2019
- 2019-08-20 CN CN201921358228.2U patent/CN210614173U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021032035A1 (en) * | 2019-08-20 | 2021-02-25 | 北京卫蓝新能源科技有限公司 | Gravure coating device for preparing large-width ultrathin metal lithium strip and method therefor |
| CN112403806A (en) * | 2019-08-20 | 2021-02-26 | 北京卫蓝新能源科技有限公司 | Gravure coating device and method for preparing large-width ultrathin metal lithium strip |
| CN112086623A (en) * | 2020-09-04 | 2020-12-15 | 捷威动力工业嘉兴有限公司 | Device for preparing three-dimensional lithium metal cathode |
| CN112467084A (en) * | 2020-11-23 | 2021-03-09 | 惠州赣锋锂电科技有限公司 | Lithium ion battery negative pole piece lithium supplementing device and lithium supplementing method thereof |
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