CN218525606U - Dry method membrane preparation device - Google Patents
Dry method membrane preparation device Download PDFInfo
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- CN218525606U CN218525606U CN202221613768.2U CN202221613768U CN218525606U CN 218525606 U CN218525606 U CN 218525606U CN 202221613768 U CN202221613768 U CN 202221613768U CN 218525606 U CN218525606 U CN 218525606U
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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
- 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
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to an electrode diaphragm preparation field specifically provides a dry process diaphragm preparation facilities, aims at solving the uneven problem that reaches the rolling alignment degree is bad of current two steel band roll-in film forming mode film forming thickness. Mesh for this reason, the utility model discloses a dry process diaphragm preparation facilities includes: the double-steel-belt assembly is used for carrying out hot rolling on the material to form a first film forming membrane; the material supplementing assembly is arranged at the downstream of the double-steel-belt assembly and used for supplementing the first film forming membrane; the rolling film-forming module is arranged at the downstream of the material supplementing assembly and is used for carrying out hot rolling on the second film-forming film after material supplementing so as to form a second film-forming film; and the edge cutting assembly is arranged at the downstream of the rolling film forming module and is used for cutting the second film forming film to form a dry film. The dry-method membrane preparation device can enable the finally formed dry-method membrane to be uniform in thickness, the edges of the dry-method membrane are neat, and good rolling alignment degree can be guaranteed.
Description
Technical Field
The utility model relates to an electrode diaphragm preparation field specifically provides a dry process diaphragm preparation facilities.
Background
At present, the research on the continuous production of dry electrodes in the lithium battery industry is in a rapid development stage, but the main problems existing at present are that premixed powder cannot be uniformly formed into a film, and the premixed powder cannot be continuously rolled after the film is formed. In the industry, vertical rolling and horizontal rolling modes are mainly adopted, and double-steel-belt rolling modes are also adopted for forming the film, but the modes have the problems of uneven film forming thickness, poor rolling alignment degree and the like.
Therefore, a dry film manufacturing apparatus is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem, promptly, solve the uneven problem that reaches the rolling alignment degree is bad of current two steel band roll-in film-forming thickness.
In a first aspect, the present invention provides a dry process membrane preparation apparatus, comprising:
the double-steel-belt assembly is used for carrying out hot rolling on the material to form a first film-forming membrane;
the material supplementing assembly is arranged at the downstream of the double-steel-belt assembly and used for supplementing the first film forming membrane;
the rolling film-forming module is arranged at the downstream of the material supplementing assembly and is used for carrying out hot rolling on the first film-forming film after material supplementing so as to form a second film-forming film;
and the trimming component is arranged at the downstream of the rolling film-forming module and is used for cutting the second film-forming film so as to form a dry film.
In a specific embodiment of the above dry-method membrane preparation device, the double-steel-belt assembly includes a plurality of sequentially arranged double steel belts, the material is subjected to hot rolling of the first double steel belt to form a primary first membrane forming membrane, and then the primary first membrane forming membrane is subjected to hot rolling of the remaining double steel belts sequentially to form the first membrane forming membrane.
In a specific embodiment of the above dry-process membrane preparation device, the double steel belts comprise an upper steel belt and a lower steel belt;
the distance between the upper steel belt and the lower steel belt is adjustable;
the angle between the upper steel belt and the lower steel belt is adjustable.
In a specific embodiment of the above dry-method film manufacturing apparatus, the plurality of double steel belts includes a first double steel belt, a second double steel belt and a third double steel belt which are arranged in sequence, the material is subjected to hot rolling of the first double steel belt to form the preliminary first film-forming film, and the preliminary first film-forming film is subjected to hot rolling of the second double steel belt and the third double steel belt in sequence to form the first film-forming film.
In a specific embodiment of the above dry-method membrane preparation device, the dry-method membrane preparation device further comprises a blanking device disposed upstream of the double-steel-strip assembly, and the blanking device is used for feeding the double-steel-strip assembly with materials.
In a specific embodiment of the above dry film manufacturing apparatus, the dry film manufacturing apparatus further includes a scanning thickness gauge, which is disposed downstream of the double steel strip assembly and upstream of the feeding assembly, and is configured to scan the thickness of the first film-forming film.
In a specific embodiment of the dry-method film preparation device, the rolling film-forming module comprises a vertical rolling assembly including two hot-pressing rollers, and the two hot-pressing rollers cooperate to perform hot rolling on the first film-forming film after material supplementing to form a preliminary second film-forming film.
In a specific embodiment of the above dry-process film forming apparatus, the rolling film forming module further includes a thinning roller assembly disposed downstream of the vertical rolling assembly, and configured to thermally roll and thin the preliminary second film-forming film to form the second film-forming film.
In a specific embodiment of the above dry-process film sheet preparation apparatus, the dry-process film sheet preparation apparatus further includes a winding mechanism, which is disposed downstream of the trimming assembly, and configured to wind the dry-process film sheet.
In a specific embodiment of the above dry-process film preparation apparatus, the dry-process film preparation apparatus further comprises a scrap collecting box disposed at the trimming assembly for recovering the scrap cut by the trimming assembly.
Under the condition that adopts above-mentioned technical scheme, the utility model discloses a two steel band subassemblies carry out hot roll-in to the material and form first film forming diaphragm, and the feed supplement subassembly carries out the feed supplement to first film forming diaphragm, and the roll-in becomes the film forming module and carries out hot roll-in to first film forming diaphragm after the feed supplement and form the second film forming diaphragm, and the second film forming diaphragm is tailor to the side cut subassembly and forms the dry process diaphragm. According to the dry-method diaphragm preparation device, the double steel belts are adopted to carry out hot rolling to form a film, the material is supplemented to the places with uneven diaphragm thickness, then hot rolling is carried out, then cutting is carried out, the finally formed dry-method diaphragm thickness is even, the edges of the dry-method diaphragm are neat, and good rolling alignment degree can be guaranteed.
Moreover, the scanning thickness meter scans and measures the thickness of the first film forming membrane, so that the material supplementing assembly can accurately supplement the first film forming membrane, and the thickness of the dry-process membrane is uniform. The blanking device and the double-steel-belt assembly can adjust the feeding speed of the blanking device and the angle and the distance between the upper steel belt and the lower steel belt to control the thickness of the first film forming membrane according to the thickness scanned and measured by the scanning thickness gauge.
The scrap collecting box collects the rim charge, can be reused and avoids material waste.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a dry-process membrane preparation device provided by the present invention;
fig. 2 is a flow chart of the dry-process membrane preparation device provided by the utility model for preparing the dry-process membrane.
List of reference numerals:
1. a blanking device; 2. double steel belts; 21. steel belt feeding; 211. a steel belt; 212. a drive shaft; 22. a steel belt is arranged; 201. a first double steel belt; 202. a second double steel belt; 203. a third double steel belt;
3. scanning a thickness gauge; 4. a feeding assembly; 5. a vertical roll-in assembly; 6. a thinning roller assembly; 61. a first hot roll; 62. a second hot roll; 63. a third hot roll; 64. a fourth hot roll; 65. a fifth heat roller;
7. a trimming assembly; 71. a waste collection tank; 8. a winding mechanism.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It is to be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The problems of uneven film forming thickness and poor winding alignment of the existing double-steel-belt rolling film forming are solved.
As shown in fig. 1, the embodiment discloses a dry-process membrane preparation device, which includes a feeding device 1, a double-steel-belt component, a scanning thickness gauge 3, a feeding component 4, a rolling film-forming module, a trimming component 7, a waste collection box 71 and a winding mechanism 8.
The blanking device 1, the double-steel-belt component, the scanning thickness gauge 3, the material supplementing component 4, the rolling film forming module, the trimming component 7 and the winding mechanism 8 are sequentially arranged. Unloader 1 sets up the upper reaches at two steel band subassemblies, and unloader 1 is used for throwing something and feeding the material to two steel band subassemblies, and unloader 1 specifically is high accuracy feed and calls.
When the prepared dry-method membrane is a positive-electrode membrane, the materials specifically include but are not limited to one or a mixture of more of NCM, LFP, lithium cobaltate, lithium manganate, lithium titanate and NCA. When the prepared dry-method membrane is a negative electrode membrane, the material specifically comprises but is not limited to one or a mixture of more of natural graphite, artificial graphite, silicon carbon, hard carbon and soft carbon.
Regarding the blanking device 1, it should be noted that although the blanking device 1 in this embodiment is a high-precision feeding device, the blanking device 1 in other embodiments may be a conventional hopper or other automatic or semi-automatic blanking device 1. The present invention does not impose any restrictions on the specific structure and form of these devices.
The double-steel-belt assembly is used for carrying out hot rolling on materials to form a first film forming membrane, and specifically, the double-steel-belt assembly comprises three double-steel belts 2, the three double-steel belts 2 are respectively a first double-steel belt 201, a second double-steel belt 202 and a third double-steel belt 203 which are sequentially arranged, the materials are subjected to hot rolling of the first double-steel belt 201 to form a primary first film forming membrane, and the primary first film forming membrane is subjected to hot rolling of the second double-steel belt 202 and the third double-steel belt 203 to form a first film forming membrane. The double steel strip 2 comprises an upper steel strip 21 and a lower steel strip 22, the distance between the upper steel strip 21 and the lower steel strip 22 is adjustable, and the thickness of a hot-rolling formed film can be controlled by adjusting the distance between the upper steel strip 21 and the lower steel strip 22. The angle between the upper steel belt 21 and the lower steel belt 22 is adjustable, and the thickness of the hot-rolled film can be controlled by adjusting the angle of the upper steel belt 21 relative to the lower steel belt 22.
Specifically, the upper steel belt 21 includes a steel belt 211 and a plurality of belt rollers arranged at intervals, one of the belt rollers is a driving roller, the others are driven rollers, the steel belt 211 is wound on the belt roller, the driving roller is connected with a first driving motor, and the first driving motor drives the driving roller to rotate to drive the steel belt 211 to operate so as to perform hot rolling.
The upper steel belt 21 further comprises a bracket and a driving shaft 212, the belt rollers are rotatably arranged on the bracket, and the first driving motor and the driving shaft 212 are fixed on the bracket. The lower steel strip 22 and the upper steel strip have the same structure. The double steel belts 2 further comprise a second driving motor and a third driving motor, the second driving motor is in transmission connection with the driving shaft 212 of the upper steel belt 21 and the driving shaft 212 of the lower steel belt 22 through gears, and the second driving motor can drive the driving shaft 212 of the upper steel belt 21 and the driving shaft 212 of the lower steel belt 22 to rotate simultaneously, so that the included angle between the upper steel belt 21 and the lower steel belt 22 is increased or decreased, and the thickness of the first film-forming film is controlled. The support of the upper steel belt 21 and the support of the lower steel belt 22 are both provided with nuts, the output end of the third driving motor is connected with a screw, the screw is in threaded connection with the nuts, the third driving motor drives the screw to rotate, the upper steel belt 21 and the lower steel belt 22 are driven to be close to each other or be far away from each other, the distance between the upper steel belt 21 and the support of the lower steel belt 22 is adjusted, and the thickness of the first film forming film is controlled.
The length of the upper steel belt 21 of the first double steel belt 201 is shorter than that of the lower steel belt 22, so that the material fed to the double steel belt by the blanking device 1 can directly fall on the lower steel belt 22. The direct distance between the upper steel belt 21 and the lower steel belt 22 of the first double-steel belt 201 is larger, and the direct included angle between the upper steel belt 21 and the lower steel belt 22 is larger, so that the thickness of the primary first film-forming membrane formed by hot roll forming of the first double-steel belt 201 is thicker.
The distance between the upper steel strip 21 and the lower steel strip 22 of the second double steel strip 202 is smaller than the distance between the upper steel strip 21 and the lower steel strip 22 of the first double steel strip 201, and the included angle between the upper steel strip 21 and the lower steel strip 22 of the second double steel strip 202 is smaller than the included angle between the upper steel strip 21 and the lower steel strip 22 of the first double steel strip 201; the thickness of the preliminary first film-formed film sheet may be thinned after the second double steel belt 202 is hot-rolled.
The distance between the upper steel strip 21 and the lower steel strip 22 of the third double steel strip 203 is smaller than the distance between the upper steel strip 21 and the lower steel strip 22 of the second double steel strip 202, and the included angle between the upper steel strip 21 and the lower steel strip 22 of the third double steel strip 203 is smaller than the included angle between the upper steel strip 21 and the lower steel strip 22 of the second double steel strip 202; the thickness of the primary first film-formed film sheet hot-rolled by the second double steel belt 202 may be thinned again after hot-rolled by the third double steel belt 203 to form a first film-formed film sheet.
With respect to the double steel strip assembly, it should be noted that although the double steel strip assembly in the present embodiment includes three double steel strips, in other embodiments, the double steel strip assembly may include: the material is pressed by the hot roller of the first double steel belt to form a primary first film forming membrane, and then the primary first film forming membrane is pressed by the hot rollers of the other double steel belts in sequence to form a first film forming membrane. The distance and the included angle between the upper steel belt 21 and the lower steel belt 22 of the next double steel belt are smaller than those between the upper steel belt 21 and the lower steel belt 22 of the previous double steel belt, so that the thickness of the membrane is gradually reduced after the double steel belts are subjected to hot rolling.
And the scanning thickness gauge 3 is arranged at the downstream of the double-steel-belt assembly and at the upstream of the material supplementing assembly 4 and is used for scanning the thickness of the first film forming membrane. Specifically, the scanning thickness gauge 3 is an ultrasonic transverse area scanning thickness gauge 3, and performs gridding thickness measurement on the first film-forming membrane, so that the entire thickness of the first film-forming membrane can be measured, and an area with a relatively small thickness of the first film-forming membrane can also be accurately measured. If the thickness of the first film-forming film is thick, the distance and angle between the upper steel belt 21 and the lower steel belt 22 are controlled so that the thickness of the first film-forming film formed by hot rolling of the double steel belt 2 becomes thin. If the thickness of the first film-forming film is not uniform, if the thickness in the width direction is not uniform, the feeding device 1 can be controlled to move at a constant speed in the width direction of the first double steel belt 201 or the number of the feeding openings in the width direction is increased, so that the feeding in the width direction is uniform, and the thickness uniformity of the first film-forming film is ensured; if the thickness in the length direction is not uniform, the thickness uniformity of the first film forming film sheet in the length direction can be ensured by controlling the feeding speed of the blanking device 1 or the rotating speed of the first double-steel belt. If the measured thickness of the first film-forming membrane is thin and the strip breakage phenomenon exists, the distance and the included angle between the upper steel strip 21 and the lower steel strip 22 can be increased to increase the thickness of the first film-forming membrane, so that the strip breakage phenomenon is avoided.
The feeding assembly 4 is arranged at the downstream of the double steel belt assembly and is used for feeding the first film forming film. The feeding component 4 is used for accurately feeding the area with the relatively thin thickness of the first film-forming membrane measured by the scanning thickness gauge 3, and the feeding component 4 is a spray-coating feeding component 4 and can move along the width direction of the first film-forming membrane. The feeding component 4 can feed the first film-forming membrane in an omnibearing and accurate manner. Or, the spray type material supplementing assembly 4 comprises a plurality of nozzles arranged along the width direction of the first film forming film, and the material is sprayed by controlling the corresponding nozzles, so that the first film forming film is supplemented in an omnibearing and accurate manner.
Although the feeding assembly 4 is the feeding assembly 4 during spraying in the present embodiment, in other embodiments, feeding can be performed by a printing feeding device. The present invention does not impose any restrictions on the specific structures and forms of these devices.
The rolling film-forming module is arranged at the downstream of the material supplementing assembly 4 and is used for carrying out hot rolling on the first film-forming film after material supplementing so as to form a second film-forming film. The specific rolling film-forming module comprises a vertical rolling assembly 5 and a thinning roller assembly 6, wherein the vertical rolling assembly 5 comprises two hot pressing rollers which are arranged side by side along the horizontal direction. Two hot press rolls cooperate and carry out the hot roll-in to first membrane forming diaphragm, specifically make the material heat recombination that feed supplement subassembly 4 supplyed on first membrane forming diaphragm to form preliminary second membrane forming diaphragm, make the thickness of preliminary second membrane forming diaphragm more even.
A ironing roll assembly 6 is disposed downstream of the vertical roll assembly 5 for hot roll ironing the preliminary second film-formed film sheet to form a second film-formed film sheet. The ironing roll assembly 6 comprises five heat rolls arranged side by side, a first heat roll 61, a second heat roll 62, a third heat roll 63, a fourth heat roll 64 and a fifth heat roll 65. The preliminary second film-forming film passes through gaps among the first heat roller 61, the second heat roller 62, the third heat roller 63, the fourth heat roller 64 and the fifth heat roller 65 in an S-shaped manner in sequence, and is reduced in thickness through the heat roller pressing of the five heat rollers, so that a second film-forming film with a thickness meeting the requirement is obtained.
And the trimming component 7 is arranged at the downstream of the rolling film-forming module and is used for cutting the second film-forming film sheet to form a dry film sheet. The edge cutting assembly 7 cuts the uneven edges of the second film-forming film sheet. The concrete structure of side cut subassembly 7 is the side cut device that battery diaphragm film forming field was commonly used, the utility model discloses do not specifically limit to its concrete structure and form.
The scrap collecting box 71 is arranged at the edge cutting assembly 7 and is specifically arranged below the edge cutting assembly 7, and the edge materials cut by the edge cutting assembly 7 fall into the scrap collecting box 71 to be recycled, so that dry-process flaking can be carried out after the dry-process flaking is carried out.
And the winding mechanism 8 is arranged at the downstream of the trimming component 7 and is used for winding the dry-method membrane. Specifically, the winding mechanism 8 includes a driving motor and a winding roller, and the driving motor drives the winding roller to rotate to wind the dry-process film so as to wind the film.
As shown in fig. 2, the process of preparing the membrane by the dry membrane preparation device:
the feeding device 1 feeds the premixed material to the first double steel belt 201; the material is sequentially pressed by hot rollers of a first double steel belt 201, a second double steel belt 202 and a third double steel belt 203 to form a first film forming membrane; the scanning thickness gauge 3 scans the first film forming membrane and measures the thickness thereof; the material supplementing assembly 4 is used for supplementing materials to the area with the thin thickness of the first film forming membrane; then, the vertical rolling assembly 5 carries out hot rolling film forming to obtain a primary second film forming membrane, and then the thinning roller assembly 6 thins the primary second film forming membrane to obtain a second film forming membrane; and the trimming component 7 cuts the second film forming membrane to obtain a dry-process membrane, and finally, the dry-process membrane is wound.
According to the dry-method diaphragm preparation device, the double steel belts are adopted to carry out hot rolling to form a film, the material is supplemented to the places with uneven diaphragm thickness, then hot rolling is carried out, then cutting is carried out, the thickness of the finally formed dry-method diaphragm is even, the edge of the dry-method diaphragm is neat, and the alignment degree of rolling is neat. Moreover, the scanning thickness gauge 3 scans and measures the thickness of the first film forming membrane, so that the material supplementing assembly 4 can accurately supplement the first film forming membrane, and the thickness of the dry-process membrane is uniform. The waste collection box 71 collects the side materials, and can be reused, so that material waste is avoided.
So far, the technical solutions of the present invention have 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 the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (10)
1. A dry-process membrane preparation device is characterized by comprising:
the double-steel-belt assembly is used for carrying out hot rolling on the material to form a first film-forming membrane;
a feeding assembly (4) arranged at the downstream of the double-steel-belt assembly and used for feeding the first film forming membrane;
the rolling film-forming module is arranged at the downstream of the material supplementing assembly (4) and is used for carrying out hot rolling on the first film-forming film after material supplementing so as to form a second film-forming film;
and the trimming component (7) is arranged at the downstream of the rolling film-forming module and is used for cutting the second film-forming film so as to form a dry film.
2. The dry film sheet production apparatus according to claim 1, wherein the double steel belt assembly comprises a plurality of double steel belts (2) arranged in sequence, and the material is subjected to hot rolling of a first double steel belt (2) to form a primary first film-forming film sheet, and then the primary first film-forming film sheet is subjected to hot rolling of the remaining double steel belts (2) to form the first film-forming film sheet in sequence.
3. The dry film web production device according to claim 2, wherein the double steel belt (2) comprises an upper steel belt (21) and a lower steel belt (22);
the distance between the upper steel belt (21) and the lower steel belt (22) is adjustable;
the angle between the upper steel belt (21) and the lower steel belt (22) is adjustable.
4. The dry film sheet preparation apparatus according to claim 2, wherein the plurality of double steel belts (2) includes a first double steel belt (201), a second double steel belt (202) and a third double steel belt (203) which are arranged in sequence, the material is hot-rolled by the first double steel belt (201) to form the preliminary first film-forming film sheet, and the preliminary first film-forming film sheet is hot-rolled by the second double steel belt (202) and the third double steel belt (203) in sequence to form the first film-forming film sheet.
5. The dry film sheet preparation apparatus according to any one of claims 1 to 4 further comprising a blanking device (1) disposed upstream of said double steel strip assembly, said blanking device (1) being adapted to feed said double steel strip assembly.
6. The dry film strip preparation device according to any one of claims 1 to 4, further comprising a scanning thickness gauge (3) disposed downstream of the double steel strip assembly and upstream of the feed assembly (4) for scanning the thickness of the first film-forming strip.
7. The dry process membrane preparation device according to any one of claims 1 to 4, wherein the rolling film-forming module comprises a vertical rolling assembly (5) comprising two hot press rolls cooperating to hot roll the first film-forming membrane after feeding to form a preliminary second film-forming membrane.
8. The dry film web production apparatus according to claim 7, wherein the roll-forming die set further comprises a ironing roll assembly (6) disposed downstream of the vertical roll assembly (5) for hot roll-ironing the preliminary second film-forming web to form the second film-forming web.
9. The dry film sheet preparation device according to claim 1, further comprising a winding mechanism (8) disposed downstream of the trimming assembly (7) for winding up the dry film sheet.
10. The dry film sheet preparation device according to claim 1, characterized in that it further comprises a scrap collecting box (71) provided at said trimming assembly (7) for recovering the trimmings cut by said trimming assembly (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221613768.2U CN218525606U (en) | 2022-06-23 | 2022-06-23 | Dry method membrane preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221613768.2U CN218525606U (en) | 2022-06-23 | 2022-06-23 | Dry method membrane preparation device |
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| CN218525606U true CN218525606U (en) | 2023-02-24 |
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| CN202221613768.2U Active CN218525606U (en) | 2022-06-23 | 2022-06-23 | Dry method membrane preparation device |
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- 2022-06-23 CN CN202221613768.2U patent/CN218525606U/en active Active
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