CN213150810U - Lithium battery negative plate preparation device - Google Patents
Lithium battery negative plate preparation device Download PDFInfo
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- CN213150810U CN213150810U CN202021401096.XU CN202021401096U CN213150810U CN 213150810 U CN213150810 U CN 213150810U CN 202021401096 U CN202021401096 U CN 202021401096U CN 213150810 U CN213150810 U CN 213150810U
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- 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 belongs to the technical field of lithium cell production facility, especially, relate to a lithium cell negative pole piece preparation facilities, include: the mixing equipment is used for dry-mixing the negative active material uniformly; the coating equipment is communicated with the mixing equipment; the cutting device is arranged at the upstream position of the coating device; the foil material unwinding device is arranged at the upstream position of the cutting device and used for conveying foil materials to the cutting device; the hot-press forming equipment is arranged at the downstream position of the coating equipment, and the coating equipment conveys the foil coated with the active material to the hot-press forming equipment; and the controller is in communication connection with the material mixing device, the coating device, the cutting device, the foil material unreeling device and the hot press molding device respectively. By the technical scheme, the problems that the lithium battery negative pole piece manufactured by the existing production equipment is assembled into the lithium battery, the capacity of the lithium battery can be reduced, and the cycle service life of the lithium battery can be prolonged are solved.
Description
Technical Field
The utility model belongs to the technical field of lithium cell production facility, especially, relate to a lithium cell negative pole piece preparation facilities.
Background
In the existing preparation process of the negative plate, firstly, a negative active material, a conductive agent, a binder, a thickening agent, a solvent and the like are prepared into slurry through a stirring process, wherein the negative active material is graphite or silicon carbon, and the proportion is 94.5-96.5%; a conductive agent sp with a proportion of 1-2%; the proportion of the SBR binder is 2-2.5%; thickening agent CMC, the proportion is 0.5-1%; the solvent deionized water accounts for 45-55% of the total weight. The slurry was then coated onto the foil by a coating system and dried by an oven. And then, preparing lithium supplement, and laminating and compounding the lithium sheet on the foil sheet by a tabletting device.
The existing preparation process of the negative plate has the following defects:
1. acting force among all particles of the powder needs to be maintained by an adhesive, so that internal resistance of the pole piece and the battery is large;
2. the existence of the binder and the thickener in the electrode limits the manufacturing temperature of the electrode, and the binder and the thickener can be decomposed above 200 ℃;
3. the contact interface of each powder particle is small, the pores exist, the powder particles are adhered into a pole piece by an adhesive, the electrochemical capacity of an active substance in the electrode pole piece cannot be exerted, more dead particles exist, namely, the powder particles without conductive network connection cause low battery capacity.
4. The heat radiation or heat conduction sintering is adopted, the solvent is evaporated in the heating process, and the pole piece is easy to fall off powder in the solvent discharging process, so that the quality is poor and the potential safety hazard is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lithium cell negative pole piece preparation facilities aims at solving the problem that can reduce lithium cell electric capacity and cycle life in lithium cell is assembled to the lithium cell by the lithium cell negative pole piece that adopts the processing of current production facility preparation.
In order to achieve the above object, the utility model adopts the following technical scheme: a lithium battery negative plate preparation device comprises: the mixing equipment is used for dry-mixing the negative active material uniformly; the coating equipment is communicated with the mixing equipment; the cutting device is arranged at the upstream position of the coating device; the device comprises a foil material unwinding device, a cutting device, a coating device and a cutting device, wherein the foil material unwinding device is arranged at the upstream position of the cutting device and used for conveying foil materials to the cutting device, and the foil pieces cut by the cutting device are conveyed to the coating device for coating the negative active materials; the hot-press forming equipment is arranged at the downstream position of the coating equipment, and the coating equipment conveys the foil coated with the active material to the hot-press forming equipment; and the controller is in communication connection with the material mixing device, the coating device, the cutting device, the foil material unreeling device and the hot press molding device respectively.
By adopting the technical scheme to prepare the lithium battery negative plate, the adhesive and the thickening agent are omitted, thereby being beneficial to the evaporation of water in materials, improving the flux of the battery and prolonging the cycle life.
Optionally, the lithium battery negative electrode sheet preparation device further comprises compacting equipment, the compacting equipment is arranged between the coating equipment and the hot press molding equipment, the coating equipment conveys the foil coated with the active material to the compacting equipment so as to compact the active material on the foil, and the compacted foil is conveyed to the hot press molding equipment.
By adopting the technical scheme, the defect of powder falling can not be caused in the process of conveying materials to hot pressing forming equipment in the process of preparing the negative pole piece.
Optionally, the compacting apparatus is an ultrasonic vibration apparatus.
By adopting the technical scheme, the process of compacting materials is more silent and environment-friendly.
Optionally, the lithium battery negative electrode sheet preparation device further comprises auxiliary coating equipment, the auxiliary coating equipment is communicated with the mixing equipment, and the auxiliary coating equipment is arranged between the compacting equipment and the hot press molding equipment.
By adopting the technical scheme, each negative plate can meet the thickness requirement.
Optionally, the lithium battery negative plate preparation device further comprises a conveyor belt assembly, the conveyor belt assembly is provided with an input end and an output end, the input end is in butt joint with the cutting device, the output end is located at the downstream position of the hot press forming device, and the coating device, the compacting device, the auxiliary coating device and the hot press forming device are all located right above the conveyor belt of the conveyor belt assembly.
By adopting the technical scheme, the conveying structure in the lithium battery negative plate preparation device is simplified, and the whole structure of the device is simple.
Optionally, the lithium battery negative plate preparation device further comprises a material box, and the material box is arranged at the downstream of the output end to receive and contain the output negative plate product.
By adopting the technical scheme, the prepared cathode plates are uniformly received and stored, and the production is orderly.
Optionally, the number of the hot press forming devices is multiple, the multiple hot press forming devices are arranged at intervals, and the heating temperatures and the processing pressures of the multiple hot press forming devices are sequentially increased.
By adopting the technical scheme, the forming quality and the production efficiency of hot-press forming can be improved.
Optionally, the lithium battery negative electrode plate preparation device further comprises a plurality of transfer distribution devices, the conveyor belt assembly comprises a first conveyor belt mechanism, a transfer conveyor belt mechanism and a plurality of second conveyor belt mechanisms, the first conveyor belt mechanism, the second conveyor belt mechanism and the transfer conveyor belt mechanism are sequentially arranged, the plurality of second conveyor belt mechanisms are arranged in parallel, the coating device, the compacting device and the auxiliary coating device are both located right above a conveyor belt of the first conveyor belt mechanism, the hot press molding device is located right above the second conveyor belt mechanism, the transfer distribution devices are arranged between the transfer conveyor belt mechanism and the second conveyor belt mechanism, and the transfer distribution devices correspond to the second conveyor belt mechanisms one to one.
By adopting the technical scheme, the production efficiency is further improved.
Optionally, the foil material unreeling device comprises an air expansion material roller, a guide roller set and a driving roller set, the air expansion material roller, the guide roller set and the driving roller set are sequentially arranged, and the output end of the driving roller set is in butt joint with the input end of the cutting device.
By adopting the technical scheme, the smooth conveying and processing of the foil materials are ensured.
Optionally, the foil material unwinding equipment further comprises a deviation rectifying mechanism, and the deviation rectifying mechanism is arranged between the guide roller set and the driving roller set.
By adopting the technical scheme, the foil material conveying process is ensured to be correct and smooth.
The utility model discloses following beneficial effect has at least:
through using the utility model provides a lithium cell negative pole piece preparation facilities prepares the negative pole piece, for prior art's preparation technology, cancelled adhesive, thickener for do not receive sintering temperature restriction and choose for use the sintering temperature more than 200 ℃ to sinter preparation negative pole piece when carrying out hot briquetting in hot briquetting equipment, be favorable to the moisture evaporation in the material, therefore eliminated the existence of trace moisture in the material and can lead to side reaction's emergence and reduce battery capacity and life cycle's the condition.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic view showing the configuration of a lithium battery negative electrode sheet manufacturing apparatus according to a first embodiment of the present invention;
fig. 2 is a schematic view showing the configuration of a lithium battery negative electrode sheet preparation apparatus according to a second embodiment of the present invention;
fig. 3 is a schematic view showing the structure of a negative electrode sheet manufacturing apparatus for a lithium battery according to a third embodiment of the present invention;
fig. 4 is a schematic view showing the configuration of a negative electrode sheet manufacturing apparatus for a lithium battery according to a fourth embodiment of the present invention;
fig. 5 is a schematic view of the negative electrode sheet manufacturing apparatus for a lithium battery according to a fifth embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
10. material mixing equipment; 20. a coating device; 30. a cutting device; 40. a foil material unwinding device; 41. an air swelling material roller; 42. a guide roller set; 43. a drive roller set; 44. a deviation rectifying mechanism; 50. hot press molding equipment; 60. Compacting equipment; 70. auxiliary coating equipment; 80. a conveyor belt assembly; 81. an input end; 82. an output end; 83. a first conveyor belt mechanism; 84. a transfer conveyor belt mechanism; 85. a second conveyor belt mechanism; 90. a magazine; 100. and (4) transferring and distributing equipment.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, a first embodiment of the present invention provides a lithium battery negative electrode sheet preparation apparatus, which includes a material mixing device 10, a coating device 20, a cutting device 30, a foil unwinding device 40, a controller (not shown) and at least one hot press forming device 50. The mixing apparatus 10 is used for dry-mixing the negative active material uniformly, the coating apparatus 20 is communicated with the mixing apparatus 10 through a communication pipe (not shown), and a pressure conveying apparatus is provided on the communication pipe, the negative active material dry-mixed uniformly in the mixing apparatus 10 is conveyed into the coating apparatus 20 by the pressure conveying apparatus, and when the foil is conveyed to a position right below the coating apparatus 20, the coating apparatus 20 coats the negative active material on the foil to a predetermined thickness. The cutting device 30 is arranged at the upstream position of the coating device 20, the foil unwinding device 40 is arranged at the upstream position of the cutting device 30, the foil unwinding device 40 conveys the foil to the cutting device 30, and the foil cut by the cutting device 30 is conveyed to the coating device 20 to coat the negative active material. After the negative active material is coated on the foil, the hot press forming device 50 is disposed at a downstream position of the coating device 20, the coating device 20 conveys the foil coated with the active material to the hot press forming device 50, and the hot press forming device 50 is turned on to heat and extrude the foil coated with the negative active material. The controller is in communication connection with the mixing device 10, the coating device 20, the cutting device 30, the foil unwinding device 40 and the hot press forming device 50 respectively, and the mixing device 10, the coating device 20, the cutting device 30, the foil unwinding device 40 and the hot press forming device 50 are controlled by the controller respectively to achieve process operation.
In the utility model, the negative active material is graphite or silicon carbon, and the proportion is 85-90%; 1-3% of conductive agent sp, 2-12% of metal lithium and 3-5% of solid electrolyte (such as oxide LLTO, lithium lanthanum titanate, or sulfide LPS, lipopolysaccharide, etc.). In the process of stirring and mixing the materials in the mixing device 10, the negative electrode active material, the conductive agent, the metal lithium (Li, which is a silver-white metal element and is soft and has the lowest density), the solid electrolyte material and the like are firstly put into the mixing device 10, then dry mixing (i.e. drying, stirring and mixing) is carried out uniformly, and then the uniformly mixed materials are conveyed to the coating device 20 through the communicating pipeline for storage and coating processing is carried out on the foil. After the coating equipment 20 coats the foil with the material, the foil is conveyed to the hot-press forming equipment 50 to be heated and extruded and formed, the heating temperature range is set between 0 and 500 ℃, the pressure range is set between 0 and 120T, and the hot-press forming process time range is set between 1 and 999 min. And finally, outputting the extruded and formed foil to obtain the lithium battery negative plate to be produced.
Through using the utility model provides a lithium cell negative pole piece preparation facilities prepares the negative pole piece, for prior art's preparation technology, the adhesive has been cancelled, the thickening agent, do not receive sintering temperature restriction and choose for use the sintering temperature more than 200 ℃ to sinter preparation negative pole piece when carrying out hot briquetting in hot briquetting equipment 50, be favorable to moisture evaporation in the material, therefore the existence of micro-moisture in the material can lead to side reaction's emergence, and contact between each components of a whole that can function independently granule of material promotes to face contact interface from point contact interface, the whole electric conductivity of electric contact area and electrode has been improved, thereby battery capacity and cycle life have been promoted. In addition, in the hot-pressing process in the hot-press forming device 50, the metal lithium coated on the foil is heated and melted to have certain fluidity and viscosity, and can serve as a binder, so that the phenomenon of powder falling caused by solvent evaporation in the prior art can be avoided in the hot-press forming process, and the production yield of the negative electrode plate is improved.
As shown in fig. 1, the lithium battery negative electrode sheet preparation apparatus further comprises a conveyor belt assembly 80, the conveyor belt assembly 80 has an input end 81 and an output end 82, the input end 81 is in butt joint with the cutting device 30, and the coating device 20 and the hot press forming device 50 are both positioned right above the conveyor belt of the conveyor belt assembly 80. After the foil material unreeling device 40 conveys the foil material to the cutting device 30 to be cut, the foil material is supported by the input end 81 and is continuously conveyed backwards to the position right below the coating device 20 to be coated with the material, and the material to be coated enters the hot press forming device 50 to be hot-pressed and formed into the negative plate. The output end 82 is located at a downstream position of the hot press forming device 50, and the negative plate after hot press forming is output through the output end 82.
Specifically, the foil material unreeling device 40 comprises an air expansion material roller 41, a guide roller group 42 and a driving roller group 43, wherein the air expansion material roller 41, the guide roller group 42 and the driving roller group 43 are sequentially arranged, and the output end of the driving roller group 43 is in butt joint with the input end of the cutting device 30. The foil material unwinding device 40 further comprises a deviation rectifying mechanism 44, and the deviation rectifying mechanism 44 is arranged between the guide roller set 42 and the driving roller set 43.
In the first embodiment, the guide roller group 42 uses 4 guide rollers to guide the foil material, wherein 3 guide rollers are disposed upstream of the deviation correcting mechanism 44 (i.e. the 3 guide rollers are disposed between the air swelling roller 41 and the deviation correcting mechanism 44), and the remaining one guide roller is disposed between the deviation correcting mechanism 44 and the driving roller group 43.
As shown in fig. 1, the lithium battery negative plate preparation apparatus further includes a magazine 90, and the magazine 90 is disposed downstream of the output end 82 to receive and store the output negative plate product.
As shown in fig. 2, it shows a schematic configuration diagram of a lithium battery negative electrode sheet preparation apparatus according to a second embodiment of the present invention. In the second embodiment, the lithium battery negative electrode sheet preparation apparatus further includes a compacting device 60, the compacting device 60 is disposed between the coating device 20 and the hot press molding device 50, so that the coating device 20 conveys the foil coated with the active material to the compacting device 60, the compacting device 60 compacts the mixed material on the foil, the compacted foil is conveyed to the hot press molding device 50, and the compacted mixed material does not have the defect of powder falling in the conveying process to the hot press molding device 50.
The lithium battery negative plate preparation device further comprises a conveyor belt assembly 80, the conveyor belt assembly 80 is provided with an input end 81 and an output end 82, the input end 81 is in butt joint with the cutting device 30, and the coating device 20, the compacting device 60 and the hot press forming device 50 are all located right above the conveyor belt of the conveyor belt assembly 80. After the foil material unreeling device 40 conveys the foil material to the cutting device 30 to be cut, the foil material is supported by the input end 81 and is continuously conveyed backwards to the position right below the coating device 20 to coat the material, the material to be coated is conveyed to the compacting device 60 to compact the coated material, and then the foil enters the hot press forming device 50 to be hot press formed into the negative plate. The output end 82 is located at a downstream position of the hot press forming device 50, and the negative plate after hot press forming is output through the output end 82.
Preferably, the compacting device 60 of the present embodiment is an ultrasonic vibration device, and the process of compacting the material is more silent and environment-friendly.
Compared with the first embodiment, the second embodiment has the same structure except for the above structure, and is not repeated herein.
As shown in fig. 3, it shows a schematic configuration diagram of a lithium battery negative electrode sheet preparation apparatus according to a third embodiment of the present invention. In the third embodiment, the lithium battery negative electrode sheet preparation apparatus further comprises an auxiliary coating device 70, the auxiliary coating device 70 is communicated with the material mixing device 10 through a communication pipeline (not shown), the auxiliary coating device 70 is arranged between the compacting device 60 and the hot press molding device 50, after the foil passes through the compacting device 60 to compact the material, the thickness of the foil from the compacting apparatus 60 is measured to determine how much the thickness of the foil differs from the desired thickness of the negative plate (generally, for safety, the amount of material applied at the application apparatus 20 is slightly less than the amount of material required for the desired foil thickness), the foil is then transported to an auxiliary coating device 70 for additional coating of the material to a desired thickness, typically a negative electrode sheet thickness in the range of 50 μm to 200 μm, and then enters a hot press forming device 50 for hot press forming.
The lithium battery negative plate preparation device further comprises a conveyor belt assembly 80, the conveyor belt assembly 80 is provided with an input end 81 and an output end 82, and the input end 81 and the cutting device 30 are in butt joint with the coating device 20, the compacting device 60, the auxiliary coating device 70 and the hot press forming device 50 which are all located right above the conveyor belt of the conveyor belt assembly 80. After the foil material unreeling device 40 conveys the foil material to the cutting device 30 to be cut, the foil material is supported by the input end 81 and is conveyed to the position right below the coating device 20 to be coated, the coated material is compacted by the compacting device 60, the coated material is supplemented by the auxiliary coating device 70 to the thickness required by the foil material, and then the foil material is fed into the hot-press forming device 50 to be hot-press formed into the negative plate. The output end 82 is located at a downstream position of the hot press forming device 50, and the negative plate after hot press forming is output through the output end 82.
Compared with the second embodiment, the third embodiment has the same structure except for the above structure, and is not repeated herein.
As shown in fig. 4, it shows a schematic configuration diagram of a lithium battery negative electrode sheet preparation apparatus according to a fourth embodiment of the present invention. In the fourth embodiment, in order to improve the molding quality and the production efficiency of the hot press molding process, therefore, the number of the hot press molding apparatuses 50 is plural, the plurality of hot press molding apparatuses 50 are arranged at intervals, and the heating temperature and the processing pressure of the plurality of hot press molding apparatuses 50 are sequentially increased.
In the fourth embodiment, the guide roller group 42 uses 5 guide rollers to perform traction guiding on the foil material, wherein 4 guide rollers are arranged upstream of the deviation rectifying mechanism 44 (i.e. the 4 guide rollers are arranged between the air swelling roller 41 and the deviation rectifying mechanism 44), and the remaining one guide roller is arranged between the deviation rectifying mechanism 44 and the driving roller group 43.
Compared with the third embodiment, the fourth embodiment has the same structure except for the above structure, and is not repeated herein.
As shown in fig. 5, a schematic diagram of the negative electrode sheet preparation device for a lithium battery according to a fifth embodiment of the present invention is shown. In the fifth embodiment, because the time required by the negative electrode plate in the hot press molding process is relatively long during the processing, and the time required by the coating material, the compacting material, the supplementary coating material and the like is relatively short, in order to further improve the production efficiency, the lithium battery negative electrode plate preparation apparatus further comprises a plurality of transfer distribution devices 100, the conveyor belt assembly 80 comprises a first conveyor belt mechanism 83, a transfer conveyor belt mechanism 84 and a plurality of second conveyor belt mechanisms 85, the first conveyor belt mechanism 83, the second conveyor belt mechanism 85 and the transfer conveyor belt mechanism 84 are sequentially arranged, the plurality of second conveyor belt mechanisms 85 are arranged in parallel, the coating device 20, the compacting device 60 and the auxiliary coating device 70 are all positioned right above the conveyor belt of the first conveyor belt mechanism 83, the hot press molding device 50 is positioned right above the second conveyor belt mechanism 85, the transfer distribution devices 100 are arranged between the transfer conveyor belt mechanism 84 and the second conveyor belt mechanism 85, the relay distribution devices 100 correspond one-to-one to the second conveyor mechanisms 85.
Compared with the fourth embodiment, the fifth embodiment has the same structure except for the above structure, and thus the description thereof is omitted.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The lithium battery negative plate preparation device is characterized by comprising the following components:
the mixing equipment is used for dry-mixing the negative active material uniformly;
the coating equipment is communicated with the mixing equipment;
a cutting apparatus disposed at an upstream position of the coating apparatus;
the foil unwinding device is arranged at the upstream position of the cutting device, the foil unwinding device conveys foil to the cutting device, and the foil cut by the cutting device is conveyed to the coating device to coat the negative active material;
at least one hot press forming device disposed at a downstream position of the coating device, the coating device transferring the foil coated with the active material to the hot press forming device; and
the controller is in communication connection with the material mixing device, the coating device, the cutting device, the foil material unwinding device and the hot-press forming device respectively.
2. The lithium battery negative electrode sheet preparation apparatus according to claim 1,
the lithium battery negative plate preparation device further comprises compaction equipment, wherein the compaction equipment is arranged between the coating equipment and the hot-press forming equipment, the coating equipment conveys the foil coated with the active materials to the compaction equipment so as to compact the active materials on the foil, and the compacted foil is conveyed to the hot-press forming equipment.
3. The lithium battery negative electrode sheet preparation apparatus according to claim 2,
the compacting equipment is ultrasonic vibration equipment.
4. The lithium battery negative electrode sheet preparation apparatus according to claim 2,
the lithium battery negative plate preparation device further comprises auxiliary coating equipment, wherein the auxiliary coating equipment is communicated with the material mixing equipment, and the auxiliary coating equipment is arranged between the compacting equipment and the hot-press forming equipment.
5. The lithium battery negative electrode sheet preparation apparatus according to claim 4,
lithium cell negative pole piece preparation facilities still includes the conveyer belt subassembly, the conveyer belt subassembly has input and output, the input with cutting equipment butt joint, the output is located hot briquetting equipment's low reaches position, just coating equipment tight real equipment supplementary coating equipment with hot briquetting equipment all is located directly over conveyer belt subassembly's conveyer belt.
6. The lithium battery negative electrode sheet preparation apparatus according to claim 5,
the lithium battery negative plate preparation device further comprises a material box, wherein the material box is arranged at the downstream of the output end to receive and store the output negative plate product.
7. The lithium battery negative electrode sheet preparation apparatus according to any one of claims 1 to 6,
the hot briquetting equipment's quantity is a plurality of, and is a plurality of hot briquetting equipment sets up at interval, and is a plurality of the heating temperature and the processing pressure of hot briquetting equipment all increase progressively in proper order.
8. The lithium battery negative electrode sheet preparation apparatus according to claim 5,
lithium cell negative pole piece preparation facilities still includes a plurality of transfer distribution equipment, the conveyer belt subassembly includes first conveyer belt mechanism, transfer conveyer belt mechanism and a plurality of second conveyer belt mechanism, first conveyer belt mechanism second conveyer belt mechanism with transfer conveyer belt mechanism arranges in proper order, and is a plurality of second conveyer belt mechanism sets up side by side, the coating equipment compact equipment with supplementary coating equipment all is located directly over the drive belt of first conveyer belt mechanism, hot briquetting equipment is located directly over second conveyer belt mechanism, transfer distribution equipment set up in transfer conveyer belt mechanism with between the second conveyer belt mechanism, transfer distribution equipment with second conveyer belt mechanism one-to-one.
9. The lithium battery negative electrode sheet preparation apparatus according to claim 1,
the foil material unreeling device comprises an air expansion material roller, a guide roller set and a driving roller set, wherein the air expansion material roller, the guide roller set and the driving roller set are sequentially arranged, and the output end of the driving roller set is in butt joint with the input end of the cutting device.
10. The lithium battery negative electrode sheet preparation apparatus according to claim 9,
the foil material unreeling device further comprises a deviation rectifying mechanism, and the deviation rectifying mechanism is arranged between the guide roller set and the driving roller set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401096.XU CN213150810U (en) | 2020-07-14 | 2020-07-14 | Lithium battery negative plate preparation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401096.XU CN213150810U (en) | 2020-07-14 | 2020-07-14 | Lithium battery negative plate preparation device |
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| CN213150810U true CN213150810U (en) | 2021-05-07 |
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| CN202021401096.XU Active CN213150810U (en) | 2020-07-14 | 2020-07-14 | Lithium battery negative plate preparation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488608A (en) * | 2021-07-02 | 2021-10-08 | 上海兰钧新能源科技有限公司 | Unit pole piece preparation method, unit pole piece and lithium battery |
| CN113725395A (en) * | 2021-09-02 | 2021-11-30 | 上海联净电子科技有限公司 | Current collector production device and production method |
-
2020
- 2020-07-14 CN CN202021401096.XU patent/CN213150810U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488608A (en) * | 2021-07-02 | 2021-10-08 | 上海兰钧新能源科技有限公司 | Unit pole piece preparation method, unit pole piece and lithium battery |
| CN113725395A (en) * | 2021-09-02 | 2021-11-30 | 上海联净电子科技有限公司 | Current collector production device and production method |
| CN113725395B (en) * | 2021-09-02 | 2023-11-24 | 上海联净电子科技有限公司 | Current collector production device and production method |
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