CN212848493U - Preparation device for composite multilayer coating electrode of lithium ion battery - Google Patents
Preparation device for composite multilayer coating electrode of lithium ion battery Download PDFInfo
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- CN212848493U CN212848493U CN202021660307.1U CN202021660307U CN212848493U CN 212848493 U CN212848493 U CN 212848493U CN 202021660307 U CN202021660307 U CN 202021660307U CN 212848493 U CN212848493 U CN 212848493U
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A lithium ion battery composite multilayer coating electrode preparation device comprises a horizontal feeding device, a lower feeding device and a coating assembly; the horizontal feeding device comprises a horizontal spray head slurry storage tank and a horizontal spray head which are connected through a feeding pipeline A, and a horizontal spray head screw pump is arranged in the feeding pipeline A; the lower feeding device comprises a lower spray head slurry storage tank and a lower spray head which are connected through a feeding pipeline B, and a lower spray head screw pump is arranged in the feeding pipeline B; the coating assembly comprises a feeding guide roller, a back roller and a discharging guide roller, wherein the feeding guide roller and the discharging guide roller are positioned on the same side of the back roller; the beneficial effects of the invention are as follows: the simultaneous coating of the two kinds of slurry can be completed, and the production and the manufacture of the composite multilayer electrode are realized. The design device can manufacture a composite multilayer electrode, realize layering of the electrode, improve the conductivity, energy density and pole piece bonding force of the battery and reduce DCR.
Description
Technical Field
The invention belongs to the technical field of lithium ion power battery production, and particularly relates to a preparation device of a composite multilayer coating electrode of a lithium ion battery.
Background
The lithium ion battery is widely applied to the fields of energy storage, electric automobiles and the like, and the high-safety high-energy characteristic in the use field puts higher requirements on the lithium ion battery. Under the condition of ensuring good safety, cycle life and rate capability, the energy density of the lithium ion battery is continuously improved, and the development of the lithium ion battery with high specific energy becomes an inevitable trend of future development. In the production of lithium batteries, composite multilayer coatings are required in order to enhance the safety performance of the batteries and increase the energy density. The existing coating mode can only complete single-layer coating on the same surface, cannot realize multi-layer coating, and cannot manufacture a composite multi-layer electrode. Therefore, it is necessary to develop a device capable of simultaneously coating multiple layers to realize the manufacture of the composite electrode.
Disclosure of Invention
In view of the above, the present invention provides a device for preparing a composite multilayer coating electrode of a lithium ion battery, which is designed for two slurries with different proportions and different materials.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a lithium ion battery composite multilayer coating electrode preparation device comprises a horizontal feeding device, a lower feeding device and a coating assembly;
the horizontal feeding device comprises a horizontal spray head slurry storage tank (1) and a horizontal spray head (8) which are connected through a feeding pipeline A, and a horizontal spray head screw pump (3) is arranged in the feeding pipeline A;
the lower feeding device comprises a lower spray head slurry storage tank (4) and a lower spray head (7) which are connected through a feeding pipeline B, and a lower spray head screw pump (6) is arranged in the feeding pipeline B;
the coating assembly comprises a feeding guide roller (11), a back roller (9) and a discharging guide roller (10), wherein the feeding guide roller (11) and the discharging guide roller (10) are positioned on the same side of the back roller (9);
the horizontal spray head (8) is positioned at the nine o' clock position of the back roller (9) and is vertical to the tangent line of the back roller (9) at the point; the lower spray head (7) is positioned at the six o' clock position of the back roll (9) and is vertical to the tangent line of the back roll (9) at the point.
Furthermore, the diameter of the feeding guide roller (11) and the diameter of the discharging guide roller (10) are smaller than that of the back roller (9), and the feeding guide roller (11) is positioned below the discharging guide roller (10).
Furthermore, the gap between the horizontal spray head (8) and the back roller (9) is 80-150um larger than the gap between the lower spray head (7) and the back roller (9).
Further, the horizontal spray head (8) and the lower spray head (7) adopt a 720mm die head nozzle of Dongli Japan.
Further, a horizontal spray head filter (2) is arranged in the feeding pipeline A; and a lower spray head filter (5) is arranged in the feeding pipeline B.
Furthermore, the gasket adopted by the lower spray head (7) is 2-3mm smaller than that adopted by the horizontal spray head (8).
Furthermore, the horizontal spray head (8) and the lower spray head (7) are respectively arranged on a movable slide rail.
The invention has the advantages and positive effects that: the invention can complete the simultaneous coating of two kinds of slurry and realize the production and manufacture of the composite multilayer electrode. The design device can manufacture a composite multilayer electrode, realize layering of the electrode, improve the conductivity, energy density and pole piece bonding force of the battery and reduce DCR.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the invention.
In the figure:
1. horizontal spray head slurry storage tank 2, horizontal spray head filter 3, horizontal spray head screw pump 4 and lower spray head slurry storage tank
5. Lower spray head filter 6, lower spray head screw pump 7, lower spray head 8 and horizontal spray head
9. Backing roll 10, discharge guide roll 11, feed guide roll 12 and flow matrix
13. Composite multilayer pole piece
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by persons skilled in the art based on the embodiments in the invention without any creative effort belong to the protection scope of the invention, and the embodiments in the invention and the features in the embodiments can be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be embodied in other specific forms than described herein, and it will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the invention.
In the following detailed description of the embodiments of the present invention, the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the schematic drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and height should be included in the actual fabrication.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in FIG. 1, the invention comprises a horizontal feeding device, a lower feeding device and a coating assembly;
the horizontal feeding device comprises a horizontal spray head slurry storage tank 1 and a horizontal spray head 8 which are connected through a feeding pipeline A, wherein a horizontal spray head screw pump 3 is arranged in the feeding pipeline A;
the lower feeding device comprises a lower spray head slurry storage tank 4 and a lower spray head 7 which are connected through a feeding pipeline B, and a lower spray head screw pump 6 is arranged in the feeding pipeline B;
the coating assembly comprises a feeding guide roller 11, a back roller 9 and a discharging guide roller 10, wherein the feeding guide roller 11 and the discharging guide roller 10 are positioned on the same side of the back roller 9;
the horizontal spray head 8 is positioned at the nine-o' clock position of the back roller 9 and is vertical to the tangent line of the back roller 9 at the point; the lower spray head 7 is located at the six o' clock position of the backing roll 9, perpendicular to the tangent line of the backing roll 9 at that point.
The diameter of the feeding guide roller 11 and the discharging guide roller 10 is smaller than that of the back roller 9, and the feeding guide roller 11 is positioned below the discharging guide roller 10.
The gap between the horizontal spray head 8 and the back roller 9 is 80-150um larger than the gap between the lower spray head 7 and the back roller 9. The horizontal spray head 8 and the lower spray head 7 adopt a 720mm die nozzle of Dongli Japan.
A horizontal spray head filter 2 is arranged in the feeding pipeline A; and a lower spray head filter 5 is arranged in the feeding pipeline B.
When the sprayer is used, the mixed slurry with the two proportions is respectively added into the horizontal sprayer slurry storage tank 1 and the lower sprayer slurry storage tank 4, and the horizontal sprayer 8 and the lower sprayer 7 respectively receive the slurry from the horizontal sprayer slurry storage tank 1 and the lower sprayer slurry storage tank 4;
the horizontal spray head 8 and the lower spray head 7 are arranged along the horizontal tangent point and the lower tangent point of the back roll 9. The positions and the gaps of the lower coating spray head and the horizontal spray head can be adjusted through installation and adjustment;
the spray head is arranged on the movable slide rail, and the alignment degree of the double-layer coating edge can be adjusted by adjusting the position of the spray head on the rail, so that the complete superposition of the multi-layer coating is completed;
the gap between the lower spray head 7 and the back roller 9 is adjusted first, and then the gap between the horizontal spray head 8 and the back roller 9 is adjusted, so that the gap between the lower spray head 7 is smaller than the gap between the horizontal spray head 8 by 80-150 um.
The coating surface density range can be controlled by adjusting a spiral ruler of a nozzle gap so as to achieve the consistency of the surface density range of each layer of slurry;
the thickness of the pole piece can be controlled by adjusting the pump speed of a screw pump of the feeding device, and the thickness of each layer of coating is adjusted according to a process design scheme;
feed guide rollers 11, discharge guide rollers 10 and backing rollers 9 are used to convey the fluid substrate 12 (copper foil, aluminum foil).
The slurry in the horizontal feeding device and the slurry in the lower feeding device are respectively sent into the respective spray heads through the respective filters by the screw pumps. Coating the two kinds of slurry on a flow matrix in sequence; and finally, preparing the composite multilayer electrode.
The flow matrix 12 is conveyed to the surface of the backing roller 9 through the feeding guide roller 11 to form a wrap angle with the backing roller 9, and when the flow matrix 12 moves, the lower spray head 7 and the horizontal spray head 9 simultaneously spray slurry to be uniformly coated on the flow matrix 12, so that the manufacturing of the multilayer composite electrode is completed. Finally, the coated electrode is conveyed into a heating oven through a discharging guide roller 10.
The invention can complete the simultaneous coating of two kinds of slurry and realize the production and manufacture of the composite multilayer electrode. The design device can manufacture a composite multilayer electrode, realize layering of the electrode, improve the conductivity, energy density and pole piece bonding force of the battery and reduce DCR.
The two coating nozzles share the high-precision back roll, the structure is simple, the coating precision is high, the two nozzles are coated simultaneously to complete the preparation of the multilayer electrode, the manufactured pole piece has high safety and high energy density, the coating quality completely meets the process requirements, the wide application in production is facilitated, and the production practice significance is great.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the invention shall fall within the scope of the patent coverage of the invention.
Claims (7)
1. The preparation device of the composite multilayer coating electrode of the lithium ion battery is characterized in that: comprises a horizontal feeding device, a lower feeding device and a coating assembly;
the horizontal feeding device comprises a horizontal spray head slurry storage tank (1) and a horizontal spray head (8) which are connected through a feeding pipeline A, and a horizontal spray head screw pump (3) is arranged in the feeding pipeline A;
the lower feeding device comprises a lower spray head slurry storage tank (4) and a lower spray head (7) which are connected through a feeding pipeline B, and a lower spray head screw pump (6) is arranged in the feeding pipeline B;
the coating assembly comprises a feeding guide roller (11), a back roller (9) and a discharging guide roller (10), wherein the feeding guide roller (11) and the discharging guide roller (10) are positioned on the same side of the back roller (9);
the horizontal spray head (8) is positioned at the nine o' clock position of the back roller (9) and is vertical to the tangent line of the back roller (9) at the point; the lower spray head (7) is positioned at the six o' clock position of the back roll (9) and is vertical to the tangent line of the back roll (9) at the point.
2. The apparatus for preparing a composite multilayer coated electrode of a lithium ion battery according to claim 1, wherein: the diameter of feeding guide roller (11) and ejection of compact deflector roll (10) will be less than the diameter of dorsal roller (9), feeding deflector roll (11) are located ejection of compact deflector roll (10) below.
3. The apparatus for preparing a composite multilayer coated electrode of a lithium ion battery according to claim 1, wherein: the gap between the horizontal spray head (8) and the back roll (9) is 80-150um larger than the gap between the lower spray head (7) and the back roll (9).
4. The apparatus of claim 3 for preparing a composite multilayer coated electrode for a lithium ion battery, wherein: the horizontal spray head (8) and the lower spray head (7) adopt a Nippon Dongli 720mm die head nozzle.
5. The apparatus for preparing a composite multilayer coated electrode of a lithium ion battery according to claim 1, wherein: a horizontal spray head filter (2) is arranged in the feeding pipeline A; and a lower spray head filter (5) is arranged in the feeding pipeline B.
6. The apparatus for preparing a composite multilayer coated electrode of a lithium ion battery according to claim 1, wherein: the gasket adopted by the lower spray head (7) is 2-3mm smaller than that adopted by the horizontal spray head (8).
7. The apparatus for preparing a composite multilayer coated electrode of a lithium ion battery according to claim 1, wherein: the horizontal spray head (8) and the lower spray head (7) are respectively arranged on a movable slide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021660307.1U CN212848493U (en) | 2020-08-11 | 2020-08-11 | Preparation device for composite multilayer coating electrode of lithium ion battery |
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| CN202021660307.1U CN212848493U (en) | 2020-08-11 | 2020-08-11 | Preparation device for composite multilayer coating electrode of lithium ion battery |
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| CN212848493U true CN212848493U (en) | 2021-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116273551A (en) * | 2023-03-10 | 2023-06-23 | 重庆太蓝新能源有限公司 | Battery paste spraying and coating device, spraying and coating system and coating method |
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2020
- 2020-08-11 CN CN202021660307.1U patent/CN212848493U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116273551A (en) * | 2023-03-10 | 2023-06-23 | 重庆太蓝新能源有限公司 | Battery paste spraying and coating device, spraying and coating system and coating method |
| CN116273551B (en) * | 2023-03-10 | 2024-03-01 | 重庆太蓝新能源有限公司 | Battery paste spraying and coating device, spraying and coating system and coating method |
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