CN217491492U - Coating device - Google Patents
Coating device Download PDFInfo
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- CN217491492U CN217491492U CN202221351260.XU CN202221351260U CN217491492U CN 217491492 U CN217491492 U CN 217491492U CN 202221351260 U CN202221351260 U CN 202221351260U CN 217491492 U CN217491492 U CN 217491492U
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Abstract
The utility model provides a coating device, including A face basement coating mechanism, first stoving mechanism, first detection mechanism, A face thick liquids coating mechanism, second stoving mechanism, B face basement coating mechanism, third stoving mechanism, second detection mechanism, B face thick liquids coating mechanism, fourth stoving mechanism and the third detection mechanism of arranging along mass flow body transfer path in proper order, wherein, A face basement coating mechanism and B face basement coating mechanism are used for coating the charcoal material on A face and B face of mass flow body respectively and form the carbon coating; the surface A slurry coating mechanism and the surface B slurry coating mechanism are respectively used for coating slurry on the dried surface A and surface B of the current collector to form a slurry layer. The utility model discloses a coating device, through being provided with A face basement coating mechanism and B face basement coating mechanism, the one shot forming processing of being convenient for has the pole piece of being equipped with carbon-coated layer and thick liquids layer, is favorable to promoting the performance of pole piece and the production efficiency of pole piece.
Description
Technical Field
The utility model relates to a battery manufacturing technology field, in particular to coating device.
Background
Because the lithium ion battery has the advantages of high voltage, high energy density, high safety, low self-discharge rate, wide use temperature range, long cycle life, no memory effect, large-current charge and discharge, environmental friendliness and the like, the lithium ion battery is deeply and widely researched by universities and universities, research units and enterprises in the field of new energy, and is greatly developed and widely applied.
In the production process of the lithium ion battery, the coating of the pole piece is an indispensable procedure. The coating machines used in the coating process have been developed from the conventional blade transfer coating to the extrusion coating which can achieve higher precision and higher speed. In order to improve the production efficiency, double-sided coating has also been developed. However, the coating results are all single-layer coating, and the pole piece after single-layer coating has poor binding power to the active material and poor electrochemical performance of the pole piece.
Although the prior art also has a form of double-layer or multi-layer coating of the pole piece to improve the adhesive force of the pole piece to the active material and the electrochemical performance of the pole piece, in the specific production process, the bottom layer coating, the double-layer coating, the three-layer coating and the like of the pole piece are respectively realized by different devices, so that the disadvantages exist in the aspects of equipment investment cost, factory planning area, production efficiency and the like.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a coating device to do benefit to the performance that promotes the pole piece and the production efficiency of pole piece.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a coating device comprises an A-side substrate coating mechanism, a first drying mechanism, a first detection mechanism, an A-side slurry coating mechanism, a second drying mechanism, a B-side substrate coating mechanism, a third drying mechanism, a second detection mechanism, a B-side slurry coating mechanism, a fourth drying mechanism and a third detection mechanism which are sequentially arranged along a current collector conveying path; the surface A substrate coating mechanism and the surface B substrate coating mechanism are respectively used for coating carbon materials on the surface A and the surface B of the current collector to form a carbon coating layer;
the first drying mechanism and the third drying mechanism are respectively used for drying the carbon coating layers on the surface A and the surface B; the first detection mechanism and the second detection mechanism are respectively used for detecting the appearance, the size and the surface density of the dried carbon coating of the surface A and the surface B; the surface A slurry coating mechanism and the surface B slurry coating mechanism are respectively used for coating slurry on the dried surface A and surface B of the current collector to form a slurry layer;
the second drying mechanism and the fourth drying mechanism are respectively used for drying the slurry layers on the surface A and the surface B; and the third detection mechanism is used for detecting the appearance, the size and the surface density of the slurry layer after the surface A and the surface B are dried.
Further, the fourth drying mechanism and the second drying mechanism are arranged oppositely up and down; at least the A-side substrate coating mechanism, the first drying mechanism, the first detection mechanism, the A-side slurry coating mechanism and the second drying mechanism are arranged in the same layer, and at least the third detection mechanism and the fourth drying mechanism are arranged in the same layer.
Further, the a-side substrate coating mechanism, the first drying mechanism, the first detection mechanism, the a-side slurry coating mechanism, the B-side substrate coating mechanism, the third drying mechanism and the second drying mechanism are arranged in the same layer, and the second detection mechanism, the B-side slurry coating mechanism and the third detection mechanism are arranged in the same layer as the fourth drying mechanism.
Further, second stoving mechanism and/or fourth stoving mechanism includes and follows current collection body direction of delivery arranges at least 10 sections stoving casees, just the stoving case includes the box, and locates a plurality of infrared light sources in the box.
Further, the infrared light source is arranged in the box body through a mounting plate; and/or a temperature detection unit is arranged on any infrared light source.
Further, the surface A substrate coating mechanism and the surface B substrate coating mechanism adopt a gravure printing machine or an extrusion coating machine.
Further, the first detection mechanism, the second detection mechanism and the third detection mechanism all comprise an appearance detection unit and a surface density detection unit.
Further, the appearance detection unit adopts a CCD image sensor; and/or the surface density detection unit adopts a surface density detector.
Further, the paste coating mechanism on the side A and the paste coating mechanism on the side B adopt an extrusion coating machine, and the coating die head for extrusion coating is a single-layer coating die head or a double-layer coating die head.
Further, the device also comprises an unwinding mechanism positioned on the upstream of the A-surface substrate coating mechanism and a winding mechanism positioned on the downstream of the third detection mechanism.
Compared with the prior art, the utility model discloses following advantage has:
coating device, through set gradually A face basement coating mechanism, A face thick liquids coating mechanism, B face basement coating mechanism, B face thick liquids coating mechanism on the delivery path of mass flow body, the one shot forming processing of being convenient for possesses the pole piece of scribbling charcoal layer and thick liquids layer, is favorable to promoting the efficiency of the performance of pole piece and the production of pole piece.
In addition, the fourth drying mechanism and the second drying mechanism are arranged oppositely up and down, so that the folding type coating is convenient to realize, and the occupied area of the coating device is favorably reduced.
Drawings
The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:
fig. 1 is a schematic view of an overall structure of a coating apparatus according to an embodiment of the present invention;
fig. 2 is a schematic view of a working flow of a coating apparatus according to an embodiment of the present invention.
Description of reference numerals:
1. an unwinding mechanism; 2. a surface A substrate coating mechanism; 3. a first drying mechanism; 4. a first detection mechanism; 5. a side slurry coating mechanism; 6. a second drying mechanism; 7. a B-side substrate coating mechanism; 8. a third drying mechanism; 9. a second detection mechanism; 10. a B side slurry coating mechanism; 11. a fourth drying mechanism; 12. a third detection mechanism; 13. a winding mechanism; 14. and (4) a current collector.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.
In the description of the present invention, it should be noted that, if terms indicating directions or positional relationships such as "up", "down", "inside", "outside", "front", "back", "left", "right", "top", "bottom" and the like appear, they are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same order, but are to be construed as referring to the same order.
In addition, in the description of the present invention, the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; 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 present invention can be understood in conjunction with the specific situation for a person of ordinary skill in the art.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model relates to a coating device, overall structure is last, and it includes A face basement coating mechanism 2, first stoving mechanism 3, first detection mechanism 4, A face thick liquids coating mechanism 5, second stoving mechanism 6, B face basement coating mechanism 7, third stoving mechanism 8, second detection mechanism 9, B face thick liquids coating mechanism 10, fourth stoving mechanism 11 and third detection mechanism 12 of arranging in proper order along the 14 delivery routes of mass flow body.
The surface-a substrate coating mechanism 2 and the surface-B substrate coating mechanism 7 are used for coating carbon materials on the surface a and the surface B of the current collector 14 to form carbon coating layers. The first drying mechanism 3 and the third drying mechanism 8 are respectively used for drying the carbon coating on the surface A and the surface B, and the first detection mechanism 4 and the second detection mechanism 9 are respectively used for detecting the appearance, the size and the surface density of the carbon coating after the surface A and the surface B are dried.
The a-side slurry coating mechanism 5 and the B-side slurry coating mechanism 10 are used for coating slurry on the carbon-coated layers dried on the a-side and the B-side of the current collector 14 to form slurry layers, respectively. The second drying mechanism 6 and the fourth drying mechanism 11 are used for drying the slurry layers on the surface A and the surface B respectively. The third detection mechanism 12 is used for detecting the appearance, size and density of the dried slurry layers of the surface A and the surface B.
The third detecting means 12 detects the appearance, size, and density of the slurry layer after the slurry coating and drying of the a surface and the B surface, and thus actually detects the sum of the carbon coating layer and the slurry layer. Further, the a-side and the B-side in this example are the top and bottom surfaces of the current collector 14, respectively. The slurry is an electrode active material main slurry.
Based on the above general description, as a preferred embodiment, fourth drying mechanism 11 and second drying mechanism 6 of the present embodiment are disposed opposite to each other in the vertical direction, as shown in fig. 1. In addition, in the specific implementation, at least the a-side substrate coating mechanism 2, the first drying mechanism 3, the first detection mechanism 4, the a-side slurry coating mechanism 5 and the second drying mechanism 6 are arranged in the same layer, and at least the third detection mechanism 12 and the fourth drying mechanism 11 are arranged in the same layer. It should be noted that fig. 1 shows the apparatus in a longitudinal display state because the entire length of the apparatus is long.
As a preferred arrangement, in this embodiment, the a-side substrate coating mechanism 2, the first drying mechanism 3, the first detecting mechanism 4, the a-side slurry coating mechanism 5, the B-side substrate coating mechanism 7, the third drying mechanism 8 and the second drying mechanism 6 are arranged in the same layer, and the second detecting mechanism 9, the B-side slurry coating mechanism 10, the third detecting mechanism 12 and the fourth drying mechanism 11 are arranged in the same layer.
The above arrangement is merely an advantageous embodiment, and the B-side base coating means 7 and the fourth drying means 11 may be arranged in the same layer, and the second detection means 9 and the B-side slurry coating means 10 may be arranged in the same layer as the fourth drying means 11.
As shown in fig. 1, in the present embodiment, the second drying mechanism 6 and the fourth drying mechanism 11 include 10 drying boxes arranged along the conveying direction of the current collector 14, and the drying boxes preferably adopt hot air ovens commonly used in the prior art. Of course, the number of drying boxes included in second drying mechanism 6 and fourth drying mechanism 11 is not limited to 10, and may be other numbers, such as 9, 11, 12, and so on.
In addition, the first drying mechanism 3 and the third drying mechanism 8 in this embodiment are preferably infrared ovens, which include a box body and a plurality of infrared light sources disposed in the box body, wherein the infrared light sources may be infrared lamps commonly used in the prior art. In specific implementation, the number of the infrared light sources is preferably 10, and includes 6 on the top wall inside the box body and 2 on the side wall where the inlet and outlet positions of the current collector 14 are respectively located, and two infrared light sources are respectively installed on the side wall where the inlet and outlet positions of the current collector 14 are located. Of course, the above-mentioned arrangement of 10 infrared light sources in the box is only a preferred embodiment, and the number of the infrared light sources may be 11, 12, 13, etc.
In addition, infrared source accessible mounting panel is located in the box, and preferably adopts the connected mode of dismantling between mounting panel and the box to change infrared source, during the concrete implementation, can peg graft the mounting panel or the joint is inside the box, and structurally, it can refer to the structure of the grafting or joint commonly used among the prior art.
In addition, in order to conveniently monitor the temperature of the infrared light sources, in this embodiment, a temperature detection unit is arranged on any one of the infrared light sources, and the temperature detection unit can select a thermocouple and the like commonly used in the prior art, so that the temperature of the infrared lamp tube is monitored by the temperature detection unit, and the infrared lamp tube is prevented from being burst due to overhigh temperature. And stainless steel meshes or other protections can be added around the infrared lamp tube to prevent the infrared lamp tube from being collided.
Of course, the above-mentioned infrared light source is installed in the box body through the mounting plate and the arrangement of the temperature detection unit is only taken as a preferred embodiment, and in addition, the infrared light source can also be directly installed in the box body without the mounting plate, for example, the infrared light source is installed in the box body through bolt connection and the like. In addition, the temperature detection unit may not be provided on the infrared light source.
As a preferred embodiment, the first detecting mechanism 4, the second detecting mechanism 9, and the third detecting mechanism 12 in the present embodiment each include an appearance detecting unit and a surface density detecting unit. The appearance detection unit can adopt a CCD image sensor, and the surface density detection unit can adopt a surface density detector.
In addition, the a-side substrate coating mechanism 2 and the B-side substrate coating mechanism 7 in the present embodiment may employ a gravure printing machine or an extrusion coater. And the side a slurry coating mechanism 5 and the side B slurry coating mechanism 10 preferably employ an extrusion coater, and the coating die of the extrusion coater is either a single-layer coating die or a double-layer coating die.
The coating apparatus in this embodiment further includes an unwinding mechanism 1 located upstream of the a-side substrate coating mechanism 2, and a winding mechanism 13 located downstream of the third detection mechanism 12. The arrangement of each part of the coating apparatus of this embodiment is as shown in fig. 1, when in specific use, the current collector 14 is conveyed to the a-side substrate coating part mechanism located at the downstream thereof through the unwinding mechanism 1, the current collector 14 passing through the a-side substrate coating mechanism 2 enters the first drying mechanism 3 located at the downstream of the a-side substrate coating mechanism 2 to be dried, and the appearance, size and surface density of the carbon coating layer formed after the a-side of the current collector 14 is subjected to base coating are detected by the first detecting mechanism 4.
The current collector 14 detected by the first detection mechanism 4 enters the A-side slurry coating mechanism 5 for slurry coating, after coating is finished and dried by the second drying mechanism 6, the current collector can enter the B-side substrate coating mechanism 7 for B-side bottom coating, then sequentially passes through the third drying mechanism 8 and the second detection mechanism 9, enters the B-side slurry coating mechanism 10, and sequentially passes through the fourth drying mechanism 11 and the third detection mechanism 12 after coating, enters the winding mechanism 13 and is wound into a pole piece roll.
As shown in fig. 2, the coating apparatus in this embodiment further includes a control mechanism, the control mechanism is electrically connected to the first detection mechanism 4, the a-side slurry coating mechanism 5, the second detection mechanism 9, the B-side slurry coating mechanism 10, and the third detection mechanism 12, respectively, the control mechanism can receive the coating surface densities of the pole piece surfaces transmitted by the first detection mechanism 4, the second detection mechanism 9, and the third detection mechanism 12, and timely make feedback according to the received information, and when the surface densities of the pole piece surfaces after coating cannot meet the process requirements, the flow rates of the screw pumps of the a-side slurry coating mechanism 5 and the B-side slurry coating mechanism 10 are adjusted to adjust the surface densities of the pole piece surfaces to meet the requirements. Of course, the control mechanism may be electrically connected to the a-side substrate coating mechanism 2 and the B-side substrate coating mechanism 7, in addition to the a-side slurry coating mechanism 5 and the B-side slurry coating mechanism 10.
The coating device of this embodiment, through set gradually A face basement coating mechanism 2, A face thick liquids coating mechanism 5, B face basement coating mechanism 7, B face thick liquids coating mechanism 10 on the delivery path of mass flow body 14, the one shot forming processing of being convenient for possesses the pole piece of scribbling charcoal layer and thick liquids layer, is favorable to promoting the efficiency of the production of the performance of pole piece and pole piece.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A coating apparatus, characterized in that:
the device comprises an A-surface substrate coating mechanism (2), a first drying mechanism (3), a first detection mechanism (4), an A-surface slurry coating mechanism (5), a second drying mechanism (6), a B-surface substrate coating mechanism (7), a third drying mechanism (8), a second detection mechanism (9), a B-surface slurry coating mechanism (10), a fourth drying mechanism (11) and a third detection mechanism (12) which are sequentially arranged along a delivery path of a current collector (14);
the A-surface substrate coating mechanism (2) and the B-surface substrate coating mechanism (7) are respectively used for coating carbon materials on the A surface and the B surface of the current collector (14) to form carbon coating layers;
the first drying mechanism (3) and the third drying mechanism (8) are respectively used for drying the carbon coating layers on the surface A and the surface B;
the first detection mechanism (4) and the second detection mechanism (9) are respectively used for detecting the appearance, the size and the surface density of the dried carbon coating layer on the surface A and the surface B;
the surface A slurry coating mechanism (5) and the surface B slurry coating mechanism (10) are respectively used for coating slurry on the carbon-coated layer dried on the surface A and the surface B of the current collector (14) to form slurry layers;
the second drying mechanism (6) and the fourth drying mechanism (11) are respectively used for drying the slurry layers on the surface A and the surface B;
and the third detection mechanism (12) is used for detecting the appearance, the size and the surface density of the slurry layer after the surface A and the surface B are dried.
2. The coating apparatus of claim 1, wherein:
the fourth drying mechanism (11) and the second drying mechanism (6) are arranged oppositely up and down;
at least the A-side substrate coating mechanism (2), the first drying mechanism (3), the first detection mechanism (4), the A-side slurry coating mechanism (5) and the second drying mechanism (6) are arranged in the same layer, and at least the third detection mechanism (12) and the fourth drying mechanism (11) are arranged in the same layer.
3. The coating apparatus of claim 2, wherein:
the surface-A substrate coating mechanism (2), the first drying mechanism (3), the first detection mechanism (4), the surface-A slurry coating mechanism (5), the surface-B substrate coating mechanism (7), the third drying mechanism (8) and the second drying mechanism (6) are arranged in the same layer, and the second detection mechanism (9), the surface-B slurry coating mechanism (10) and the third detection mechanism (12) are arranged in the same layer as the fourth drying mechanism (11).
4. The coating apparatus of claim 2, wherein:
the second drying mechanism (6) and/or the fourth drying mechanism (11) comprise at least 10 sections of drying boxes which are arranged along the conveying direction of the current collector (14), and the drying boxes adopt hot air drying boxes;
the first drying mechanism (3) and/or the third drying machine comprise a box body and a plurality of infrared light sources arranged in the box body.
5. The coating apparatus of claim 4, wherein:
the infrared light source is arranged in the box body through the mounting plate; and/or a temperature detection unit is arranged on any infrared light source.
6. The coating apparatus of claim 1, wherein:
the A-surface substrate coating mechanism (2) and the B-surface substrate coating mechanism (7) adopt a gravure printing machine or an extrusion coating machine.
7. The coating apparatus of claim 1, wherein:
the first detection mechanism (4), the second detection mechanism (9) and the third detection mechanism (12) comprise an appearance detection unit and a surface density detection unit.
8. The coating apparatus of claim 7, wherein:
the appearance detection unit adopts a CCD image sensor; and/or the surface density detection unit adopts a surface density detector.
9. The coating apparatus of claim 1, wherein:
the paste coating mechanism (5) on the side A and the paste coating mechanism (10) on the side B adopt an extrusion coating machine, and the coating die head for extrusion coating is a single-layer coating die head or a double-layer coating die head.
10. The coating apparatus according to any one of claims 1 to 9, wherein:
the device also comprises an unwinding mechanism (1) positioned at the upstream of the A-surface substrate coating mechanism (2) and a winding mechanism (13) positioned at the downstream of the third detection mechanism (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221351260.XU CN217491492U (en) | 2022-05-31 | 2022-05-31 | Coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221351260.XU CN217491492U (en) | 2022-05-31 | 2022-05-31 | Coating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217491492U true CN217491492U (en) | 2022-09-27 |
Family
ID=83357041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221351260.XU Active CN217491492U (en) | 2022-05-31 | 2022-05-31 | Coating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217491492U (en) |
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2022
- 2022-05-31 CN CN202221351260.XU patent/CN217491492U/en active Active
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