CN111842066A - Preparation process and system for improving coating and drying quality of pole piece - Google Patents
Preparation process and system for improving coating and drying quality of pole piece Download PDFInfo
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- CN111842066A CN111842066A CN202010818937.5A CN202010818937A CN111842066A CN 111842066 A CN111842066 A CN 111842066A CN 202010818937 A CN202010818937 A CN 202010818937A CN 111842066 A CN111842066 A CN 111842066A
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- 238000001035 drying Methods 0.000 title claims abstract description 127
- 238000000576 coating method Methods 0.000 title claims abstract description 93
- 239000011248 coating agent Substances 0.000 title claims abstract description 86
- 238000002360 preparation method Methods 0.000 title claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 133
- 238000007664 blowing Methods 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims description 24
- 238000000861 blow drying Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 238000007605 air drying Methods 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
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Abstract
The invention discloses a preparation process and a system for improving coating and drying quality of a pole piece, wherein the preparation process comprises a substrate drying process, the substrate drying process is a blowing and drying process, an air outlet nozzle is used for blowing air in the blowing and drying process, and an air return nozzle is used for returning air, so that the air sprayed out of the air outlet nozzle flows along a direction approximately parallel to the routing of the substrate and flows back to the air return nozzle; the preparation system comprises a system box body, and an air outlet nozzle and an air return nozzle which are arranged inside the system box body, wherein the system box body is provided with a substrate inlet and a substrate outlet, and an air guide cover plate is arranged between the air outlet nozzle and the air return nozzle. The preparation process and the system for improving the coating and drying quality of the pole piece have the advantages of ordered return air, uniform drying, high drying consistency, good drying quality, stable substrate, high drying efficiency and the like, which are not possessed by the prior art.
Description
Technical Field
The invention relates to the field of lithium battery processing, in particular to a preparation process and a system for improving the coating and drying quality of a pole piece.
Background
With the development and maturity of lithium battery technology, the application range of lithium batteries is wider and wider.
An important process of the lithium battery in the production process is to perform coating treatment on the electrode sheet substrate, and after the coating is finished, drying treatment needs to be performed on a coating layer on the electrode sheet substrate. The pole piece substrate needs to be blown with hot air in an oven in the drying process. Before drying the pole piece substrate, the pole piece substrate after coating generally needs to be dried by blowing so as to improve the subsequent drying effect. However, when the existing substrate blowing and drying device is used for blowing and drying, the blowing flow direction of the blowing and drying device to the pole piece substrate is generally disordered and disordered, the disordered blowing can cause the drying speed of the edge position of the pole piece substrate to be too high, the situations of over-drying, cracking and the like of the edge coating are easy to occur, the drying uniformity of the whole substrate coating is further poor, and the subsequent processing procedures are influenced; on the other hand, disordered blowing can reduce the drying efficiency of the whole substrate and influence the production efficiency of products; moreover, the disordered and disordered wind can cause the whole pole piece substrate to be affected by wind easily and swing, so that the uneven drying condition is further aggravated, and the drying quality is reduced.
In conclusion, the prior art seriously influences the further development and popularization and application of the field.
In view of the above, the present invention provides a new technical solution to solve the existing technical drawbacks.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a preparation process and a system for improving the coating and drying quality of a pole piece, and solves the technical defects of disordered drying and blowing, uneven drying speed, easy overdrying of a base deformation position, poor drying quality, low drying efficiency, easy swing of the pole piece base, influence on subsequent processing and the like in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the preparation process comprises a substrate drying process, wherein the substrate drying process is a blowing drying process, an air outlet nozzle is used for blowing air in the blowing drying process, and air returning from an air return nozzle is used for returning air, so that the air sprayed out of the air outlet nozzle flows along the direction approximately parallel to the substrate routing and flows back to the air return nozzle.
As an improvement of the technical proposal, a return air channel approximately parallel to the substrate coating is formed between the air blowing nozzle and the return air nozzle in the process of blowing and drying.
As a further improvement of the technical scheme, an air guide cover plate is arranged between the air outlet nozzle and the air return nozzle, and the inner wall of the air guide cover plate and the surface of the substrate form the air return channel.
As a further improvement of the above technical solution, the air-blowing drying process is performed after the substrate is coated and before the coating and drying process is performed.
As a further improvement of the above technical solution, the air-drying process may perform air-drying treatment on the first surface or the second surface or both the upper and lower surfaces of the substrate.
As a further improvement of the above technical solution, the blow drying process is performed after the substrate is coated and before the substrate enters the oven, or the blow drying process is performed after the substrate is coated and before the substrate enters the oven.
As a further improvement of the above technical solution, the air outlet used in the drying process is an outer eight-shaped air outlet, and the air outlet has two air outlets extending obliquely outward and having gradually reduced air outlet cross sections.
As a further improvement of the above technical solution, the lateral portion of the air outlet nozzle has an air outlet folded plate, the inside of the air outlet nozzle has an inner mesh member of the air outlet nozzle, an air outlet gap is formed between the lateral portion of the inner mesh member of the air outlet nozzle and the air outlet folded plate, and the air outlet gap forms an air outlet of the air outlet nozzle.
As a further improvement of the above technical solution, the method further comprises a substrate coating process, wherein a coating machine is used for coating the substrate in the substrate coating process, the substrate can be coated on one side or both sides by the coating machine, after the substrate is coated, the substrate is dried by blowing, and after the drying, the substrate is dried by drying, and the drying can be completed by using an oven.
Based on the preparation process for improving the coating and drying quality of the pole piece, the invention also provides a preparation system for improving the coating and drying quality of the pole piece, which comprises a system box body, and an air outlet nozzle and an air return nozzle which are arranged in the system box body, wherein the system box body is provided with a substrate inlet and a substrate outlet, and an air guide cover plate is arranged between the air outlet nozzle and the air return nozzle.
As an improvement of the above technical solution, the air outlet used in the drying process is an outer eight-shaped air outlet, and the air outlet has two air outlets extending obliquely outward and having gradually reduced air outlet cross sections.
As a further improvement of the above technical solution, the lateral portion of the air outlet nozzle has an air outlet folded plate, the inside of the air outlet nozzle has an inner mesh member of the air outlet nozzle, an air outlet gap is formed between the lateral portion of the inner mesh member of the air outlet nozzle and the air outlet folded plate, and the air outlet gap forms an air outlet of the air outlet nozzle.
As a further improvement of the technical scheme, a return air channel is formed on the inner wall of the air guide cover plate and the surface of the substrate, and the return air channel is approximately parallel to the substrate penetrating through the system box body.
As a further improvement of the technical scheme, the distance between the air outlet nozzle, the air return nozzle and the air guide cover plate and the base penetrating through the system box body is kept between 5 and 80 mm.
As a further improvement of the technical scheme, the air outlet nozzles and the air return nozzles are respectively provided with a plurality of air outlet nozzles and air return nozzles which are distributed at intervals.
As a further improvement of the technical scheme, the plurality of air outlet nozzles are communicated with one or more air outlet sources, and the plurality of air return nozzles are communicated with one or more air return sources.
As a further improvement of the above technical solution, the air outlet nozzle, the air return nozzle and the air guide cover plate may be disposed on an upper portion or a lower portion or both of the upper portion and the lower portion of the base passing through the inside of the system box.
As a further improvement of the technical scheme, a substrate guide roller for guiding the substrate is arranged in the system box body.
As a further improvement of the technical scheme, the preparation system can be arranged in the oven or at any position between the coating machine and the oven.
As a further improvement of the above technical solution, a distance adjusting device is arranged inside the system box, and the distance adjusting device can adjust the distance between the air outlet nozzle, the air return nozzle, the air guide cover plate and the substrate penetrating through the system box.
As a further improvement of the above technical solution, an air volume adjusting device capable of adjusting the size of the outlet air is arranged inside the outlet nozzle.
As a further improvement of the above technical solution, the floating air nozzle is further included, and the floating air nozzle is used for driving the substrate floating wire.
The invention has the beneficial effects that: the invention provides a preparation process and a system for improving the coating and drying quality of a pole piece, wherein the preparation process and the system for improving the coating and drying quality of the pole piece are provided with an air outlet nozzle and an air return nozzle, and an air return channel is formed between the air outlet nozzle and the air return nozzle, so that air can be returned orderly during the drying process of a substrate, the conditions of overdrying, cracking and the like of the edge position of the substrate are avoided, the drying uniformity of the whole substrate coating is greatly improved, the drying quality of the substrate is greatly improved, and the processing quality of subsequent products can be further improved; in addition, due to the improvement of the uniformity and consistency of the substrate installation, the drying efficiency of the whole substrate is also improved, and the improvement of the production efficiency of battery products is further facilitated; moreover, due to the orderly air return in the blowing and drying process, the substrate cannot swing obviously in the drying process, and the drying quality is also promoted.
In conclusion, the preparation process and the system for improving the coating and drying quality of the pole piece solve the technical defects of disordered drying and blowing, uneven drying speed, easy overdrying of a base deformation position, poor drying quality, low drying efficiency, easy swinging of the pole piece base, influence on subsequent processing and the like in the prior art.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a manufacturing system for improving the coating and drying quality of a pole piece according to the present invention.
Fig. 2 is a schematic structural view of the air outlet nozzle of the present invention.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The technical features of the invention can be interactively combined without conflicting with each other, as shown in fig. 1 and 2.
A preparation process for improving coating and drying quality of a pole piece comprises a substrate drying process, wherein the substrate drying process is a blowing drying process, air is blown by an air outlet nozzle 1 in the blowing drying process, air is returned by an air return nozzle 2, and air sprayed by the air outlet nozzle 1 flows along a direction approximately parallel to a wiring direction of a substrate 4 and flows back to the air return nozzle; carry out the drying process at basement 4, make the wind that reachs that tuyere 1 blows out through this kind of mode of blowing can return air in order, prevent that the wind that tuyere 1 blew out from blowing to basement 4 side excessively, the border position amount of wind of avoiding basement 4 is too big, prevent that basement border position from appearing the drying too fast, the condition such as crack even of overdrying, further make whole basement 4 homogeneity better in drying process, improve dry uniformity, help promoting basement 4's drying quality and subsequent product processingquality.
In the process of blowing and drying, a return air channel 30 approximately parallel to the substrate coating is formed between the blowing nozzle and the return air nozzle; specifically, an air guide cover plate 3 is arranged between the air outlet nozzle 1 and the air return nozzle 2, and the inner wall of the air guide cover plate 3 and the surface of the substrate 4 form the air return channel 30.
Through setting up return air passageway 30 for orderly return air is realized to whole return air process, avoids appearing the unordered condition of return air disorder, helps promoting drying quality.
The air outlet nozzle 1 used in the blowing and drying process is an outer eight-shaped air outlet nozzle, and the air outlet nozzle 1 is provided with two air outlets 10 which extend outwards in an inclined mode and the air outlet cross section of which is gradually reduced; the side portion of the air outlet nozzle 1 is provided with an air outlet folded plate 11, an air nozzle inner mesh piece 12 is arranged inside the air outlet nozzle 1, an air outlet gap is formed between the side portion of the air nozzle inner mesh piece 12 and the air outlet folded plate 11, and the air outlet gap forms an air outlet 10 of the air outlet nozzle 1.
This kind of air outlet structure of "eight" form outward can help the orderly return air in the drying process, and when practical application, this kind of air outlet can make the air-out velocity of flow higher, helps promoting drying efficiency, combines the structure of orderly return air, can take moist incasement air out rapidly through return air nozzle 2, greatly promotes drying efficiency.
The blow drying process is performed after the substrate 4 is coated and before the coating and drying process is performed.
In general, after the substrate 4 is dried by the blow drying process, the substrate 4 is then introduced into a drying part of an oven to be dried.
In this embodiment, the blow drying process is performed after the substrate 4 is coated and enters the oven.
In other embodiments, the implementer may peel the blow drying process from the oven according to actual needs, and the blow drying process is performed after the substrate 4 is coated and before the substrate enters the oven, and the specific situation may be selected according to implementation conditions, and only the embodiment implemented based on the basic concept of the present invention falls within the protection scope of the present invention.
The blow drying process may simultaneously perform a blow drying process on the first surface or the second surface or both the upper and lower surfaces of the substrate 3.
Preferably, the method further comprises a substrate 4 coating process, wherein a coating machine is adopted to coat the substrate 4 in the substrate coating process, the coating machine can be used for single-side coating or double-side coating of the substrate 4, after the substrate 4 is coated, the substrate 4 is subjected to air-blowing drying treatment, after the air-blowing drying treatment, the substrate 4 is subjected to drying treatment, and the drying treatment can be completed by an oven.
In specific implementation, when the coating machine is used for coating one side of the substrate 4, the side of the substrate 4 to be coated needs to be dried by blowing; when the coating machine is used to coat both sides of the substrate 4, the coating on both sides of the substrate 4 needs to be dried, and the specific implementation can be set according to the coating requirement.
Based on the preparation process for improving the coating and drying quality of the pole piece, the invention also provides a preparation system for improving the coating and drying quality of the pole piece, which comprises a system box body 5, an air outlet nozzle 1 and an air return nozzle 2, wherein the air outlet nozzle 1 and the air return nozzle 2 are arranged in the system box body 5, and the system box body 5 is provided with a substrate inlet and a substrate outlet; a float tuyere 6 is also included, the float tuyere 6 being used to drive the substrate 4 to float the track.
Based on this kind of dry preparation system of blowing, during the specific application, the wind that air outlet nozzle 1 blew out can return air in order, prevent that air outlet nozzle 1 blew out from blowing to 4 sides of basement excessively, the border position amount of wind of avoiding basement 4 is too big, prevent that the condition such as the basement border position drying is too fast, overdry or even fracture from appearing, further make whole basement 4 homogeneity better in drying process, improve dry uniformity, help promoting basement 4's drying quality and subsequent product processingquality.
An air guide cover plate 3 is arranged between the air outlet nozzle 1 and the air return nozzle 2, an air return channel 30 is formed on the inner wall of the air guide cover plate 3 and the surface of the substrate 4, and the air return channel 30 is approximately parallel to the substrate 4 penetrating through the system box body 5. In practical application, the air return channel 30 formed by the air guide cover plate 3 and the surface of the substrate 4 can enable the air flow direction in the air blowing and drying process to be approximately parallel and close to the coating surface of the substrate 4, can rapidly bring away the moisture on the coating surface, and is beneficial to improving the drying speed; in addition, the structure can also avoid high-moisture air from being filled in the system box body 5, moist air in the box can be rapidly pumped out, dry air is timely supplemented, and the drying efficiency is greatly improved.
The air outlet nozzle 1 used in the blowing and drying process is an outer eight-shaped air outlet nozzle, and the air outlet nozzle 1 is provided with two air outlets 10 which extend outwards in an inclined mode and the air outlet cross section of which is gradually reduced; specifically, an air outlet folded plate 11 is arranged on the side portion of the air outlet nozzle 1, an air nozzle inner mesh piece 12 is arranged inside the air outlet nozzle 1, an air outlet gap is arranged between the side portion of the air nozzle inner mesh piece 12 and the air outlet folded plate 11, and the air outlet gap forms an air outlet 10 of the air outlet nozzle 1.
This kind of air outlet structure of "eight" form outward can help the orderly return air in the drying process, and when practical application, this kind of air outlet can make the air-out velocity of flow higher, helps promoting drying efficiency, combines the structure of orderly return air, can take moist incasement air out rapidly through return air nozzle 2, greatly promotes drying efficiency.
The distance between the air outlet nozzle 1, the air return nozzle 2 and the air guide cover plate 3 and the base 4 penetrating through the system box body 5 is kept between 5 mm and 80mm, and when the air-guiding device is used for implementing the invention, the distance is preferably 5 mm to 20 mm.
The air outlet nozzles 1 and the air return nozzles 2 are provided with a plurality of air outlet nozzles 1 and air return nozzles 2 which are distributed at intervals; the air outlets 1 are communicated with one or more air outlets, and the air return nozzles 2 are communicated with one or more air return sources.
In this embodiment, the plurality of air outlets 1 are communicated with one air outlet source, and the plurality of air return nozzles 2 are communicated with one air return source.
Before the substrate 4 enters the system box 5, the substrate 4 needs to be coated by a coating machine, the substrate 4 can be coated by the coating machine in the substrate coating process, the substrate 4 can be coated by a single-side coating or a double-side coating by the coating machine, after the substrate 4 is coated, the substrate 4 is dried by blowing, and after the drying, the substrate 4 is dried by an oven.
In specific implementation, when the coating machine is used for coating a single surface of the substrate 4, the surface of the substrate 4 to be coated needs to be dried by blowing, and at this time, the air outlet nozzle 1, the air return nozzle 2 and the air guide cover plate 3 are arranged on the surface of the substrate 4 to be coated correspondingly, that is, the air outlet nozzle 1, the air return nozzle 2 and the air guide cover plate 3 are arranged on the upper part or the lower part of the substrate 4; when the coating machine is used for coating the two surfaces of the substrate 4, the coating on the two surfaces of the substrate 4 needs to be dried, and at this time, the air outlet nozzle 1, the air return nozzle 2 and the air guide cover plate 3 are arranged on the upper part and the lower part of the substrate 4 at the same time.
And a substrate guide roller 7 for guiding the substrate is arranged in the system box body 5, and the substrate 4 is guided by the substrate guide rail 7.
The preparation system can be arranged in the oven or at any position between the coating machine and the oven;
in this embodiment, the preparation system is disposed inside the oven, and inside the oven, the substrate 4 is dried by the drying system inside the oven after being dried by the preparation system; in some specific implementation cases, the preparation system provided by the invention can be separated from the inside of the oven, as long as the embodiment based on the inventive concept is within the protection scope of the invention.
The distance adjusting device is arranged in the system box body 5, the distance between the air outlet nozzle 1, the air return nozzle 2, the air guide cover plate 3 and a substrate 4 penetrating through the system box body can be adjusted through the distance adjusting device, and in specific application, the distances between the air outlet nozzle 1, the air return nozzle 2, the air guide cover plate 3 and the substrate 4 can be set according to parameters such as the thickness of the substrate 4, the thickness of a coating on the substrate 4, the wetting degree of the coating, the material of the coating, the wiring speed of the substrate 4 and the like.
The air outlet nozzle 1 is internally provided with an air volume adjusting device capable of adjusting the size of the outlet air, and an implementer can also set parameters such as the air volume and the air speed of the air outlet nozzle 1 according to the parameters such as the thickness of the substrate 4, the thickness of the coating on the substrate 4, the wetting degree of the coating, the material of the coating, the wiring speed of the substrate 4 and the like.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (22)
1. A preparation process for improving coating and drying quality of a pole piece is characterized by comprising the following steps: the preparation process comprises a substrate drying process, wherein the substrate drying process is a blowing drying process, an air outlet nozzle is used for blowing air in the blowing drying process, and an air return nozzle is used for returning air, so that the air sprayed out of the air outlet nozzle flows along a direction approximately parallel to the substrate routing and flows back to the air return nozzle.
2. The preparation process for improving the coating and drying quality of the pole piece according to claim 1, which is characterized in that: during the blow drying process, a return air channel is formed between the blowing nozzle and the return air nozzle, which is approximately parallel to the substrate coating.
3. The preparation process for improving the coating and drying quality of the pole piece according to claim 2, characterized in that: and a wind guide cover plate is arranged between the wind outlet nozzle and the return air nozzle, and the inner wall of the wind guide cover plate and the surface of the substrate form the return air channel.
4. The preparation process for improving the coating and drying quality of the pole piece according to claim 1, which is characterized in that: the blow drying process is performed after the substrate is coated and before the coating and drying process is performed.
5. The preparation process for improving the coating and drying quality of the pole piece according to claim 1, which is characterized in that: the blow drying process may perform a blow drying process on the first surface or the second surface or both the upper and lower surfaces of the substrate.
6. The preparation process for improving the coating and drying quality of the pole piece according to claim 1, which is characterized in that: the blowing drying process is carried out after the substrate is coated and before the substrate enters the oven, or the blowing drying process is carried out after the substrate is coated and before the substrate enters the oven.
7. The preparation process for improving the coating and drying quality of the pole piece according to claim 1, which is characterized in that: the air outlet used in the air drying process is an outer eight-shaped air outlet which is provided with two air outlets extending outwards in an inclined mode and the air outlet cross section of each air outlet is gradually reduced.
8. The preparation process for improving the coating and drying quality of the pole piece according to claim 7, wherein the preparation process comprises the following steps: the lateral part of the air outlet nozzle is provided with an air outlet folded plate, the inside of the air outlet nozzle is provided with an air nozzle internal mesh part, an air outlet gap is arranged between the lateral part of the air nozzle internal mesh part and the air outlet folded plate, and the air outlet gap forms the air outlet of the air outlet nozzle.
9. The preparation process for improving the coating and drying quality of the pole piece according to any one of claims 1 to 8, wherein the preparation process comprises the following steps: the method comprises a substrate coating process, wherein a coating machine is adopted to coat the substrate in the substrate coating process, the coating machine can be used for coating the substrate on the same surface or on two surfaces, the substrate is subjected to air-blowing drying treatment after the coating treatment, the substrate is dried after the air-blowing drying treatment, and the drying treatment can be finished by an oven.
10. The utility model provides an improve preparation system of pole piece coating drying quality which characterized in that: the air guide device comprises a system box body, and an air outlet nozzle and an air return nozzle which are arranged inside the system box body, wherein the system box body is provided with a substrate inlet and a substrate outlet, and an air guide cover plate is arranged between the air outlet nozzle and the air return nozzle.
11. The preparation system of claim 10 for improving drying quality of coating of pole pieces, wherein: the air outlet used in the air drying process is an outer eight-shaped air outlet which is provided with two air outlets extending outwards in an inclined mode and the air outlet cross section of each air outlet is gradually reduced.
12. The preparation system of claim 10 for improving drying quality of coating of pole pieces, wherein: the lateral part of the air outlet nozzle is provided with an air outlet folded plate, the inside of the air outlet nozzle is provided with an air nozzle internal mesh part, an air outlet gap is arranged between the lateral part of the air nozzle internal mesh part and the air outlet folded plate, and the air outlet gap forms the air outlet of the air outlet nozzle.
13. The preparation system of claim 10 for improving drying quality of coating of pole pieces, wherein: and a return air channel is formed on the inner wall of the air guide cover plate and the surface of the substrate and is approximately parallel to the substrate penetrating through the system box body.
14. The preparation system of claim 10 for improving drying quality of coating of pole pieces, wherein: the distance between the air outlet nozzle, the air return nozzle and the air guide cover plate and the base penetrating through the system box body is kept between 5 mm and 80 mm.
15. The preparation system of claim 10 for improving drying quality of coating of pole pieces, wherein: the air outlet nozzle and the air return nozzle are both provided with a plurality of air outlet nozzles and air return nozzles which are distributed at intervals.
16. The preparation system of claim 15, wherein the preparation system is configured to improve drying quality of coating of the pole piece, and comprises: the plurality of air outlet nozzles are communicated with one or more air outlet sources, and the plurality of air return nozzles are communicated with one or more air return sources.
17. The preparation system of claim 10 for improving drying quality of coating of pole pieces, wherein: the air outlet nozzle, the air return nozzle and the air guide cover plate can be arranged on the upper part or the lower part or the upper part and the lower part of the base penetrating through the inside of the system box body.
18. The preparation system of claim 10 for improving drying quality of coating of pole pieces, wherein: and a substrate guide roller for guiding the substrate is arranged in the system box body.
19. The preparation system of claim 10 for improving drying quality of coating of pole pieces, wherein: the preparation system can be arranged in the oven or at any position between the coating machine and the oven.
20. The preparation system of claim 10 for improving drying quality of coating of pole pieces, wherein: the system box is internally provided with a distance adjusting device, and the distance adjusting device can adjust the distance between the air outlet nozzle, the air return nozzle, the air guide cover plate and a substrate penetrating through the system box.
21. The preparation system for improving the drying quality of the pole piece coating according to any one of claims 10 to 20, wherein: and an air volume adjusting device capable of adjusting the size of the outlet air is arranged in the air outlet nozzle.
22. The preparation system for improving the drying quality of the pole piece coating according to any one of claims 10 to 20, wherein: the floating air nozzle is used for driving the substrate to float and walk.
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| CN202010818937.5A CN111842066A (en) | 2020-08-14 | 2020-08-14 | Preparation process and system for improving coating and drying quality of pole piece |
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| CN202010818937.5A CN111842066A (en) | 2020-08-14 | 2020-08-14 | Preparation process and system for improving coating and drying quality of pole piece |
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| CN113578704A (en) * | 2021-09-03 | 2021-11-02 | 广东海中新能源设备股份有限公司 | High-speed wide-width coating air nozzle |
| CN113877784A (en) * | 2021-09-30 | 2022-01-04 | 惠州市鸿通晟自动化设备有限公司 | Pole piece drying system |
| CN114985217A (en) * | 2022-08-05 | 2022-09-02 | 楚能新能源股份有限公司 | Double-sided coating equipment and method for lithium battery pole piece |
| WO2023005446A1 (en) * | 2021-07-30 | 2023-02-02 | 宁德时代新能源科技股份有限公司 | Drying apparatus and coating device |
| CN116603709A (en) * | 2023-04-28 | 2023-08-18 | 广东利元亨智能装备股份有限公司 | Coating oven and coating machine |
| CN116943998A (en) * | 2023-07-21 | 2023-10-27 | 深圳市尚水智能股份有限公司 | Air outlet device, baking system and coating machine |
| US12085335B2 (en) | 2021-07-30 | 2024-09-10 | Contemporary Amperex Technology Co., Limited | Oven drying apparatus and coating device |
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