CN213161702U - Preparation system for preventing edge of pole piece from cracking - Google Patents
Preparation system for preventing edge of pole piece from cracking Download PDFInfo
- Publication number
- CN213161702U CN213161702U CN202020103281.4U CN202020103281U CN213161702U CN 213161702 U CN213161702 U CN 213161702U CN 202020103281 U CN202020103281 U CN 202020103281U CN 213161702 U CN213161702 U CN 213161702U
- Authority
- CN
- China
- Prior art keywords
- coating
- substrate
- humidifying device
- edge
- pole piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The utility model discloses a prevent preparation system of pole piece edge fracture, preparation system includes coating machine and oven, be provided with humidification device on the coating machine or in the oven or between coating machine and the oven, humidification device can carry out humidification treatment to the basement surface. The preparation system for preventing the edge of the pole piece from cracking has the advantages of simple structure, convenience in implementation, capability of preventing the cracking of the base coating, improvement of coating and drying quality and the like which are not possessed by the prior art.
Description
Technical Field
The utility model relates to a lithium cell production field, especially a prevent preparation system of pole piece edge fracture.
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 completed, drying treatment needs to be performed on the 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. In the drying process, the heat absorbed by the area close to the edge of the coating on the substrate is transferred to the edge of the coating, so that the heat absorbed by the edge of the coating is far more than that absorbed by other areas of the coating, and the edge area of the coating is cracked or powdered; in addition, the area of the substrate close to the edge of the coating absorbs too much heat, and the blank area of the part of the substrate is easy to deform, distort and the like, so that the substrate wrinkles, the coating quality is seriously affected, and the subsequent battery production quality is also affected.
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.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a prevent preparation system of pole piece edge fracture has solved prior art and has appeared coating fracture, fall whitewashed, basement distortion and corrugate technical defect easily in carrying out pole piece drying process.
The utility model provides a technical scheme that its technical problem adopted is:
a preparation process for preventing the edge of a pole piece from cracking comprises a substrate coating process and a substrate drying process, wherein the humidifying process is carried out on the position, connected with the edge of a coating layer, of a substrate and/or the edge of the coating layer in the preparation process, and a liquid heat absorption layer or liquid heat absorption particles are formed on the surfaces of the substrate and the position, subjected to the humidifying process, of the coating layer.
As a first improvement of the above technical solution, the humidifying treatment process is performed during the coating process of the substrate, and the humidifying treatment can be performed at the middle stage or the rear stage of the coating process.
As a second improvement of the above technical solution, the humidifying treatment process is performed after the substrate is coated and before the substrate drying process is performed.
As a third improvement of the above technical solution, the humidification processing is performed during the substrate drying process.
As a further improvement of the above technical solution, the humidification treatment may simultaneously humidify the first surface or the second surface or both surfaces of the substrate.
As a further improvement of the technical scheme, the humidifying treatment can adopt manual humidifying or adopt a humidifying device to humidify the position of the substrate connected with the coating applied on the substrate and the edge position of the coating.
As a further improvement of the above technical solution, when the humidification device is used to humidify the substrate and the coating layer in the humidification process, the humidification device may be disposed at a coater for substrate coating or inside an oven for substrate drying or at a substrate routing position between the coater and the oven.
As a further improvement of the above technical solution, the humidifying device for performing the humidification treatment is one or a combination of two or more of a liquid seepage humidifying device, a liquid spray humidifying device, an atomization spray humidifying device, a point coating type humidifying device, and a coating device having a coating function.
As a further improvement of the technical scheme, a coating machine is adopted in the substrate coating process to complete the coating work of the substrate, and the substrate can be coated on a single side or double sides; the substrate drying process is completed in an oven, the oven can spray hot air on a first surface or spray hot air on a second surface or spray hot air on double surfaces of the substrate, and the liquid adopted for humidification can be water or NMP solution or other volatile mixed liquid.
Based on foretell preparation technology who prevents pole piece edge fracture, the utility model also provides a preparation system who prevents pole piece edge fracture, preparation system includes coating machine and oven, be provided with humidification device on the coating machine or in the oven or between coating machine and the oven, humidification device can carry out humidification treatment to the basement surface.
As an improvement of the preparation system, the humidifying device can humidify the position of the substrate connected with the edge of the coating and the edge position of the coating;
as a further improvement of the above production system, the humidifying device may humidify the other side of the coated side of the substrate;
as a further improvement of the above production system, the humidifying device humidifies the other side of the coated side of the substrate during coating or after coating.
As a further improvement of the preparation system, the humidifying device is one or a combined humidifying device of two or more of a seepage humidifying device, a liquid spraying humidifying device, an atomizing and spraying humidifying device, a point coating humidifying device and a coating device with a coating and wetting function.
As a further improvement of the above production system, the humidifying device is provided in at least one of the inside of the coater, the oven, and between the coater and the oven.
The utility model has the advantages that: the utility model provides a prevent preparation system of pole piece edge fracture, this kind of preparation system for preventing pole piece edge fracture can carry out humidification treatment to the position that is close to the coating edge on the basement, the pole piece basement after humidification treatment can be with utilizing the liquid heat absorption that humidification treatment formed and take away the heat, make the basement be close to the regional heat control of the regional absorption at coating edge and coating edge at coating edge in suitable within range, and then can avoid the coating to appear the fracture in coating edge position, phenomenons such as fall the powder, also can slow down or eliminate phenomenons such as basement blank region wrinkling deformation, the coating quality and the drying quality of pole piece basement have greatly been promoted, also be favorable to adopting the production quality of the battery of this kind of pole piece basement, the phenomenon such as unqualified of pole piece coating has effectively been reduced, the product percent of pass is improved.
To sum up, this kind of preparation system that prevents pole piece edge fracture has solved prior art and has appeared technical defect such as basement distortion, coating fracture, falling powder easily in carrying out the pole piece dry processing in-process.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a preparation system for preventing edge cracking of a pole piece in embodiment 1 of the present invention;
fig. 2 is a schematic view of a liquid seepage humidifying device in embodiment 1 of the present invention;
fig. 3 is a schematic view of a spray humidifying device in embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of a preparation system for preventing edge cracking of a pole piece in embodiment 2 of the present invention;
FIG. 5 is a schematic view of a system for preventing edge cracking of a pole piece in example 3 of the present invention;
FIG. 6 is a schematic diagram of a preparation system for preventing edge cracking of a pole piece in embodiment 4 of the present invention;
fig. 7 is a schematic diagram of a preparation system for preventing edge cracking of a pole piece in embodiment 5 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to 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 utility model discloses each technical feature in the creation can the interactive combination under the prerequisite that does not contradict conflict each other. Reference is made to fig. 1-7.
Example 1: with reference to figures 1-3 of the drawings,
a preparation process for preventing the edge of a pole piece from cracking comprises a substrate coating process and a substrate drying process, wherein in the preparation process, the position of the substrate 9 connected with the edge of a coating 91 and/or the edge of the coating 91 is subjected to humidification treatment, liquid heat absorption layers or liquid heat absorption particles can be formed on the surfaces of the substrate 9 and the position subjected to humidification treatment on the coating 91, and the liquid heat absorption layers or the liquid heat absorption particles can absorb a large amount of heat in the drying process of the substrate 9, so that the blank position of the substrate 9 is prevented from transferring the heat to the edge position of the coating 91, and the phenomena of cracking, powder falling and the like caused by excessive heat absorption at the edge position of the coating are avoided; on the other hand, after humidification treatment, the heat at the blank position on the substrate 9 can be absorbed and taken away by the liquid heat absorption layer or the liquid heat absorption particles, so that the blank position distortion of the edge of the coating 91 on the substrate 9 close to the substrate is effectively slowed down or eliminated, the substrate 9 is prevented from wrinkling, the consistency of the whole coating on the substrate 9 is ensured, the electrode plate substrate has the advantage of good coating consistency, the substrate 9 has the advantage of good flatness, and the quality of a battery applying the electrode plate substrate can be improved.
In the present embodiment, the substrate 9 is a foil material, such as a copper foil, an aluminum foil, or the like.
In specific implementation, the humidification treatment can form a whole liquid heat absorption layer or form tiny heat absorption liquid particles, and the humidification treatment can be determined according to the production process requirements of different substrates.
In the substrate coating process, a coating machine 1 is adopted to complete the coating work of a substrate 9, and the substrate 9 can be coated on one side or two sides; the substrate drying process is that the drying work of the substrate 9 is completed in the drying oven 2, the drying oven 2 can spray hot air on the first surface or spray hot air on the second surface or spray hot air on the double surfaces of the substrate 9, the liquid adopted for humidification can be water or an NMP solution or other volatile mixed liquid, in the embodiment, the liquid adopted for humidification is pure water, and in the actual production and application process, the liquid adopted for humidification is preferably liquid with high specific heat capacity, low cost and no corrosiveness.
The surface of the substrate 9 near the blank position of the edge of the coating 91 and the edge position of the coating 91 has at least one position subjected to humidification treatment, and the surface subjected to humidification treatment on the substrate 9 can be a first surface of the same surface as the coating or a second surface of the opposite surface to the coating.
Referring specifically to fig. 1, in the present embodiment, the humidification treatment process is performed during the coating process of the substrate 9, and the humidification treatment may be performed at the middle stage or the rear stage of the coating process.
Preferably, the humidification treatment is performed to humidify the first surface or the second surface or both surfaces of the substrate 9, and only one or both surfaces of the substrate 9 may be humidified according to the specific production process requirements.
In a specific humidification process, the region to be humidified may be controlled within 10mm from the edge of the surface of the applied coating 91, and the region to be humidified on the substrate 9 may be a blank region without the coating on the substrate.
The humidification treatment can humidify the position on the substrate 9 near the edge of the application layer 91 and the position of the edge of the application layer 91 by using the humidifying device 3.
Preferably, the humidifying device 3 for performing the humidification treatment is one or a combination of two or more of a liquid seepage humidifying device, a liquid spray humidifying device, an atomization spray humidifying device, a point coating humidifying device, and a coating device having a coating function.
Referring to fig. 2 specifically, when the humidifying device 3 is a liquid-permeating humidifying device, the liquid-permeating humidifying device includes a liquid-permeating supply tank 311, a liquid-permeating coating device 312 made of a permeable material, a liquid-permeating pipeline 313 and a liquid-permeating throttling valve 314, and the liquid-permeating coating device 312 may be made of water-absorbing materials such as paper, cloth, sponge and the like.
Referring to fig. 3 in particular, when the humidifying device 3 is a liquid spraying humidifying device, the liquid spraying humidifying device includes a spraying head 321, a liquid spraying power source 322, a liquid spraying connecting pipe 323, a liquid spraying throttle valve 324 and a liquid spraying liquid supply tank 325, and the liquid spraying power source 322 generally selects a pump as a power source.
In actual implementation the utility model discloses the time, the person of implementing can select suitable humidification device according to specific production requirement, and humidification device 3 also can finely tune its mounted position as required.
When a coating device having a wetting function is selected as the humidifying device 3, the coating device may be used in the present embodiment as a humidifying device, such as a gravure coating device, a blade coating device, or the like, as long as the coating device can perform coating of a liquid on a substrate and perform a humidifying function.
When the humidification process uses the humidification device 3 to humidify the substrate 9, the humidification device 3 may be provided at the coater 1 that performs the substrate coating process.
Specifically, the humidifying device 3 may be disposed at a corresponding position on the coater 1, and the coater 1 performs humidifying treatment on the corresponding position on the substrate 9 in the electrode sheet substrate coating process.
Referring to fig. 1, based on the preparation technology who prevents pole piece edge fracture, the utility model also provides a preparation system who prevents pole piece edge fracture, including coating machine 1 and oven 2, be provided with humidification device 3 on coating machine 1 or in oven 2 or between coating machine 1 and the oven 2, humidification device 3 can carry out humidification treatment to basement 9 surface.
In the preparation system, the humidifying device 3 can humidify the position of the substrate connected with the edge of the coating and the edge position of the coating;
in the preparation system, the humidifying device 3 can humidify the other surface of the coating surface coated on the substrate 9;
in the manufacturing system, the humidifying device 3 humidifies the other surface of the coated surface of the substrate 9 during or after coating.
In the preparation system, the humidifying device 3 is one or a combined humidifying device of two or more of a seepage humidifying device, a liquid spraying humidifying device, an atomization spraying humidifying device, a point coating humidifying device and a coating device with a coating function.
Referring to fig. 2 specifically, when the humidifying device 3 is a liquid-permeating humidifying device, the liquid-permeating humidifying device includes a liquid-permeating supply tank 311, a liquid-permeating coating device 312 made of a permeable material, a liquid-permeating pipeline 313 and a liquid-permeating throttling valve 314, and the liquid-permeating coating device 312 may be made of water-absorbing materials such as paper, cloth, sponge and the like.
Referring to fig. 3 in particular, when the humidifying device 3 is a liquid spraying humidifying device, the liquid spraying humidifying device includes a spraying head 321, a liquid spraying power source 322, a liquid spraying connecting pipe 323, a liquid spraying throttle valve 324 and a liquid spraying liquid supply tank 325, and the liquid spraying power source 322 generally selects a pump as a power source.
In the preparation system, the humidifying device 3 is disposed in at least one position among the coater 1, the oven 2 and between the coater and the oven, specifically, the humidifying device 3 may be disposed in the coater 1, or disposed inside the oven 2, or disposed between the coater 1 and the oven 2, or disposed in any two or three positions of the above three positions, depending on the implementation and implementation conditions.
The liquid adopted by the humidifying device 3 in the humidifying treatment process can be water or an NMP solution or other volatile mixed liquid, in the embodiment, the liquid adopted by the humidifying treatment is pure water, and in the actual production and application process, the liquid adopted by the humidifying treatment is preferably a liquid with high specific heat capacity, low cost and no corrosiveness.
Example 2: with particular reference to figure 4 of the drawings,
this embodiment is basically the same as embodiment 1, but differs therefrom in that: the humidifying treatment process is carried out after the substrate 9 is coated and before the substrate drying process, and the humidifying device 3 is arranged at the substrate wiring position between the coating machine 1 and the drying oven 2.
Specifically, the substrate 9 comes out from the coating machine 1 after coating is completed, and then the coated substrate 9 enters the oven 2, in the process, the corresponding position on the substrate 9 is humidified, and meanwhile, the humidifying device 3 is also arranged in the routing process.
Example 3: with particular reference to figure 5 of the drawings,
this embodiment is basically the same as embodiment 1, but differs therefrom in that: the humidifying treatment process is carried out in the process of drying the substrate 9, and the humidifying device 3 is arranged inside the oven 2 for drying the substrate.
Specifically, after the substrate 9 enters the oven 2, the humidifying device 3 humidifies a corresponding position on the substrate 9, and the timing of the humidifying treatment can be determined before the oven 2 sprays hot air or in the process of spraying hot air by the oven 2, specifically according to actual production needs.
Example 4: with particular reference to figure 6 of the drawings,
this embodiment is basically the same as embodiment 1, but differs therefrom in that: the humidifying treatment process is carried out after the substrate 9 is coated and before the substrate drying process is carried out, meanwhile, the substrate 9 enters the drying oven 2 to be dried, and is also humidified, and the humidifying device 3 is arranged at the substrate wiring position between the coating machine 1 and the drying oven 2 and is arranged in the drying oven 2.
Example 5: with particular reference to figure 7 of the drawings,
this embodiment is basically the same as embodiment 1, but differs therefrom in that: the humidifying treatment process is carried out in the process of coating the substrate 9, meanwhile, the substrate 9 is also humidified in the process of drying after entering the oven 2, and the humidifying device 3 is arranged at the substrate wiring position between the coating machine 1 and the oven 2 and in the oven 2.
Example 6:
in the embodiment, the polymer film is used as a substrate 9 for coating, the first surface of the polymer film is coated, the second surface of the polymer film is subjected to humidification treatment, and after the coating and humidification treatment, the polymer film subjected to the coating and humidification treatment is dried. After the humidification treatment, the humidification liquid formed on the second surface of the polymer film plays a role in heat conduction and balancing the temperature of the polymer film in the drying process, and prevents the coated coating 91 on the first surface from wrinkling, cracking, powder falling and the like.
In the present embodiment, a humidifying device 3 is provided in the coating apparatus (coater 1) for performing a simultaneous humidifying treatment on the second surface of the polymer film, which completes the humidifying treatment during the coating process.
Example 7:
in the embodiment, the polymer film is used as a substrate 9 for coating, and after the first surface of the polymer film is coated, humidification treatment is carried out on the second surface. And after the steps are executed, drying the polymer film. The humidifying liquid formed on the second surface of the polymer film after the humidifying treatment plays a role in heat conduction and balancing the temperature of the polymer film in drying, and prevents the coating 91 on the first surface from wrinkling, cracking, powder falling and the like.
In the present embodiment, the humidifying device 3 is provided in the coating apparatus or between the coating apparatus and the drying apparatus, and is configured to perform a humidifying process on the second surface of the polymer film that has been subjected to the coating process.
In practicing the present invention, the practitioner can also select other suitable materials for the coated substrate 9 depending on the particular implementation requirements.
In addition, depending on the specific implementation conditions, the implementer may select manual means instead of the humidifying device 3 to perform the humidifying treatment on the substrate 9, and other process steps are not changed.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (6)
1. The utility model provides a prevent preparation system of pole piece edge fracture which characterized in that: the device comprises a coating machine and an oven, wherein a humidifying device is arranged on the coating machine or in the oven or between the coating machine and the oven, and the humidifying device can humidify the surface of a substrate.
2. The preparation system for preventing the edge of the pole piece from cracking as claimed in claim 1, wherein: the humidifying device can humidify the position of the substrate connected with the edge of the coating and the edge of the coating.
3. The preparation system for preventing the edge of the pole piece from cracking as claimed in claim 1, wherein: the humidifying device can humidify the other surface of the coating surface of the substrate.
4. The preparation system for preventing the edge of the pole piece from cracking as claimed in claim 3, wherein: the humidifying device humidifies the other side of the coating surface of the substrate during coating or after coating.
5. The preparation system for preventing the edge of the pole piece from cracking as claimed in claim 1, wherein: the humidifying device is one or a combination humidifying device of two or more than two of a seepage humidifying device, a liquid spraying humidifying device, an atomization spraying humidifying device, a point coating humidifying device and a coating device with a coating function.
6. The preparation system for preventing the edge of the pole piece from cracking as claimed in claim 1, wherein: the humidifying device is arranged in at least one position of the coating machine, the drying oven and between the coating machine and the drying oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020103281.4U CN213161702U (en) | 2020-01-16 | 2020-01-16 | Preparation system for preventing edge of pole piece from cracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020103281.4U CN213161702U (en) | 2020-01-16 | 2020-01-16 | Preparation system for preventing edge of pole piece from cracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213161702U true CN213161702U (en) | 2021-05-11 |
Family
ID=75765191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020103281.4U Active CN213161702U (en) | 2020-01-16 | 2020-01-16 | Preparation system for preventing edge of pole piece from cracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213161702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495727A (en) * | 2020-01-16 | 2021-03-16 | 深圳市新嘉拓自动化技术有限公司 | Preparation process and system for preventing edge cracking of pole piece |
-
2020
- 2020-01-16 CN CN202020103281.4U patent/CN213161702U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495727A (en) * | 2020-01-16 | 2021-03-16 | 深圳市新嘉拓自动化技术有限公司 | Preparation process and system for preventing edge cracking of pole piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106784944B (en) | A kind of preparation process of hydrogen fuel cell membrane electrode | |
| CN103165858B (en) | The manufacture method of electrode | |
| JP4771979B2 (en) | Method for producing a fuel cell element comprising a catalyst layer and a plurality of ionomer overcoat layers | |
| CN102694150B (en) | A kind of preparation method of lithium ion secondary battery pole piece | |
| CN213161702U (en) | Preparation system for preventing edge of pole piece from cracking | |
| CN109088073A (en) | Proton Exchange Membrane Fuel Cells ccm membrane electrode and preparation method thereof | |
| CN207103057U (en) | A kind of perovskite thin film coating apparatus | |
| CN110265671A (en) | A kind of preparation method and device of fuel cell membrane electrode | |
| CN101752570B (en) | Preparation method of proton exchange membrane fuel cell electrode | |
| CN109847974A (en) | A kind of membrane electrode of fuel batter with proton exchange film fixtures for painting and preparation method thereof | |
| CN101355166A (en) | Method for preparing membrane electrode of fuel batter with proton exchange film | |
| CN112495727A (en) | Preparation process and system for preventing edge cracking of pole piece | |
| CN108075158A (en) | A kind of preparation method of fuel cell CCM membrane electrodes | |
| JP4833860B2 (en) | Membrane electrode assembly prepared by spraying catalyst directly onto membrane | |
| CN201563301U (en) | Dry film laminating device for flexible circuit boards | |
| JP2002270187A (en) | High polymer electrolyte type fuel cell and manufacturing method therefor | |
| CN101626084A (en) | Method for preparing membrane electrode by CCM | |
| CN109940967B (en) | Top plate bonding composite process for railway vehicle | |
| CN109147990A (en) | A kind of single side jet printing type conductive film and preparation method thereof | |
| CN107620391B (en) | A kind of water-proof air-permeable composite material and preparation method of the 3D structure in intelligent water steam flow road | |
| CN108428766A (en) | The crystal silicon battery and preparation method thereof of anti-edge current leakage | |
| CN116154185A (en) | Fuel cell electrode catalytic layer and membrane electrode comprising same | |
| CN206061178U (en) | A kind of Battery formation fixture fever tablet | |
| KR102335927B1 (en) | Method for manufacturing membrane electrode assembly | |
| CN114744215A (en) | Fuel cell gas diffusion layer with novel structure and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |