CN216857277U - Lithium battery pole piece coating preheating device - Google Patents
Lithium battery pole piece coating preheating device Download PDFInfo
- Publication number
- CN216857277U CN216857277U CN202220105932.2U CN202220105932U CN216857277U CN 216857277 U CN216857277 U CN 216857277U CN 202220105932 U CN202220105932 U CN 202220105932U CN 216857277 U CN216857277 U CN 216857277U
- Authority
- CN
- China
- Prior art keywords
- coating
- substrate
- lithium battery
- pole piece
- battery pole
- 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
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model relates to the technical field of coating, in particular to a lithium battery pole piece coating preheating device, which is used for a coating machine to carry out coating preheating operation on a lithium battery pole piece substrate and comprises an unwinding mechanism, a coating mechanism, a drying mechanism and a winding mechanism which are sequentially arranged along the wiring direction of the substrate, wherein a preheating assembly is arranged between the coating mechanism and the drying mechanism and used for preheating the substrate coated with a coating, and the preheating assembly is in contact with the surface of the substrate not coated with the coating, so that the drying efficiency is improved, the coating is heated more uniformly when a subsequent drying mechanism dries the coating, the defects of cracks and the like on the surface of the coating are prevented, and the yield of the lithium battery pole piece is improved.
Description
Technical Field
The utility model relates to the technical field of coating, in particular to a preheating device for coating of a lithium battery pole piece.
Background
Because the lithium battery pole piece has large wet coating moisture content and is difficult to dry, the traditional process only adopts a drying mechanism to heat the material by utilizing a hot air convection method, and the efficiency of heat energy permeating and transferring from the surface of the base material to the coating material is lower, so that the coating is unevenly heated in the drying process, the surface is dried, and cracks are easily generated. Ultimately limiting the drying effect and coating speed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a preheating device for coating of a lithium battery pole piece, which is used for solving the problems in the background technology.
The utility model provides a technical scheme that: the utility model provides a lithium battery pole piece coating preheating device for the coating machine carries out the coating to lithium battery pole piece substrate and preheats the operation, includes unwinding mechanism, coating mechanism, stoving mechanism and the winding mechanism that the line direction set gradually along the substrate, coating mechanism with it preheats the subassembly to be provided with between the stoving mechanism, preheat the subassembly and be used for preheating the substrate after the coating, it contacts with the wet coating relative another surface of substrate to preheat the subassembly.
And a transition roller and a back roller for reversing the substrate are also arranged between the unreeling mechanism and the coating mechanism.
The preheating assembly comprises a plurality of first heating rollers and a plurality of second heating rollers, the first heating rollers are uniformly distributed along the routing direction of the base material, and the second heating rollers and the first heating rollers are distributed at intervals.
The preheating assembly further comprises a heat source connected with each of the first heating rollers and each of the second heating rollers, respectively.
At least one second heating roller is arranged between two adjacent first heating rollers.
Each of the first heated rollers has a wrap angle α 2 with the substrate.
The working temperature of the heat source is not higher than that of the drying mechanism.
The backing roll is opposite the coating head of the coating mechanism.
The utility model provides a lithium battery pole piece coating preheating device through improvement, and compared with the prior art, the lithium battery pole piece coating preheating device has the following improvements and advantages:
through the arrangement of the preheating assembly, after the substrate is coated with the coating, the preheating assembly heats one surface of the substrate, which is not coated with the coating, and heat is conducted to the coating through the substrate, so that the coating is preheated from inside to outside, and the drying efficiency is improved, so that when a subsequent drying mechanism dries the coating, the coating is heated more uniformly, cracks and other defects on the surface of the coating are prevented, the yield of the lithium battery pole piece is improved, and the practicability of the lithium battery pole piece is improved.
Drawings
The utility model is further explained below with reference to the figures and examples:
FIG. 1 is a prior art schematic;
FIG. 2 is a schematic view of a first process flow of an embodiment of the present invention;
FIG. 3 is a schematic view of a second process flow according to an embodiment of the present invention;
FIG. 4 is a schematic view of a third process flow according to an embodiment of the present invention.
In the figure, an unreeling mechanism 1, a transition roller 2, a back roller 4, a coating mechanism 5, a preheating assembly 6, a drying mechanism 7, a reeling mechanism 8, a storage tank 51, a screw pump 52, a servo control valve 53, a coating head 54, a first heating roller 61 and a second heating roller 62.
Detailed Description
The core of the utility model is to provide a lithium battery pole piece coating preheating device, which is used for improving the production efficiency of lithium battery pole piece coating, improving the yield of products and preventing the coating from generating cracks and other defects.
The present invention will be described in detail with reference to fig. 2 to 4, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the descriptions of "first", "second", etc. used in the embodiments of the present invention are only for descriptive purposes, and should not be interpreted as indicating or implying any limitation to the number of technical features, and therefore, the features defined as "first", "second", etc. in the embodiments of the present invention may indicate that at least one of the defined technical features is included.
Technical solutions between the embodiments of the present invention described in the present specification may be combined with each other, but it is necessary for those skilled in the art to realize the technical solutions.
As shown in fig. 2-4, the utility model relates to a lithium battery pole piece coating preheating device, which is used for a coating machine to perform coating preheating operation on a lithium battery pole piece substrate, and comprises an unwinding mechanism 1, a coating mechanism 5, a drying mechanism 7 and a winding mechanism 8 which are sequentially arranged along a substrate routing direction, wherein a preheating component 6 is arranged between the coating mechanism 5 and the drying mechanism 7, the preheating component 6 is used for preheating the substrate coated with a coating, and the preheating component 6 is in contact with the other surface of the substrate opposite to the wet coating.
In the working process, the substrate coated with the coating by the coating mechanism 5 passes through the preheating assembly 6, and the preheating assembly 6 transfers heat to the back surface of the substrate, so that the heat is transferred to the wet coating on the surface of the substrate, and the coating is preheated from inside to outside. The back of the substrate refers to the surface opposite the wet coating of the substrate.
If the coating standard of the lithium battery pole piece substrate is single-side coating, the side of the heating roller assembly 6, which is in contact with the substrate, is the uncoated surface of the substrate; if the coating standard of the lithium battery pole piece substrate is double-sided coating, the side of the heating roller assembly 6 contacting the substrate may be the uncoated surface of the substrate or the completely dried coated side of the substrate.
Further, in an embodiment of the present invention, the substrate preheated by the preheating assembly 6 enters the drying mechanism 7, and the drying mechanism 7 heats the substrate, and it should be noted that the drying mechanism 7 is preferably an oven.
Specifically, as the substrate coating is preheated by the preheating assembly 6, when the drying mechanism 7 dries the substrate coating at high power, no adverse effect such as cracks occurs on the surface of the substrate coating, the production speed is increased, the product quality is not affected, and the practicability of the utility model is improved.
The preheating assembly 6 comprises a plurality of first heating rollers 61 and a plurality of second heating rollers 62, wherein the plurality of first heating rollers 61 are uniformly distributed along the routing direction of the base material, the plurality of second heating rollers 62 are distributed with the first heating rollers 61 at intervals, and at least one second heating roller 62 is arranged between every two adjacent first heating rollers 61.
The diameter of the first heating roller 61 and the diameter of the second heating roller 62 may be the same or different.
In one embodiment of the present invention, the diameter of the first heated roller 61 is larger than the diameter of the second heated roller 62.
A wrap angle α 2 is formed between each first heating roller 61 and the substrate, and the value of the wrap angle α 2 is set according to the actual production process requirement.
In an embodiment of the present invention, a reasonable wrap angle α 2 is set between each first heating roller 61 and the substrate, so that the substrate can be better attached to the first heating roller 61, the arc length of the first heating roller 61 attached to the substrate is in a proper range, and the preheating effect on the substrate coating is further improved, and the practicability is further improved.
Through setting up a plurality of first heating rollers 61 and second heating roller 62 to follow the even interval distribution of substrate walk the line direction, thereby make when heating, the coating on substrate surface is heated more evenly.
Further, in one embodiment of the present invention, the temperatures of the first heating rollers 61 are kept consistent, and the specific values of the temperatures are set according to the requirements of production standards.
In one embodiment of the present invention, the temperatures of the plurality of first heating rollers 61 are different, and the temperatures of the first heating rollers 61 arranged along the running direction of the substrate are sequentially increased, specifically, the temperature of the first heating roller 61 near the drying mechanism 7 is higher than the temperature of the first heating roller 61 near the back roller 4, and the heating temperature of the first heating roller 61 is not higher than the heating temperature of the drying mechanism 7 at the highest.
In an embodiment of the present invention, the temperature of the plurality of second heating rollers 62 is the same as the lowest temperature of the first heating roller 61, during the production process, the second heating rollers 62 can assist in preheating the substrate to prevent heat loss during the wiring process, and the temperature of the second heating rollers 62 is the same as the lowest temperature of the first heating rollers 61, so that energy is reasonably used, and the practicability of the present invention is further improved.
It should be noted that, a plurality of second heating rollers 62 are disposed between two adjacent first heating rollers 61, and at least one second heating roller 62 is disposed between two adjacent first heating rollers 61, wherein the number of the second heating rollers can be any number, and the specific value thereof is determined according to the distance between two adjacent first heating rollers 61, so as to ensure that the heat on the back surface of the substrate is not excessively lost, thereby improving the preheating effect.
Further, the preheating assembly 6 further comprises a heat source, the heat source is respectively connected with each of the first heating rollers 61 and each of the second heating rollers 62, and the working temperature of the heat source is not higher than the working temperature of the drying mechanism 7.
It should be noted that the heat source is used to provide heat for each of the first heating roller 61 and the second heating roller 62, and the specific heating manner of the heat source may be one or more combinations of electric heating, water heating, electromagnetic heating, heat-conducting oil heating, and the like.
Further, a transition roller 2 and a back roller 4 for reversing the substrate are arranged between the unreeling mechanism 1 and the coating mechanism 5.
The coating mechanism 5 comprises a storage tank 51, a screw pump 52, a servo control valve 53 and a coating head 54, wherein the back roller 4 is opposite to the coating head 54, the screw pump 52 is used for conveying the coating in the storage tank 51 to the coating head 54, the servo control valve 53 is used for controlling the discharging and discharging speed of the coating head 54, the coating head 54 is opposite to the back roller 4, when the base material passes through the back roller 4, the coating head 54 coats the surface of the base material, and the back roller 4 can support the base material, so that the coating effect of the coating can be improved.
Further, in one embodiment of the present invention, the back roll 4 and the substrate have a wrap angle α 1 therebetween; the value of the wrap angle alpha 1 is set according to the requirements of the actual production process.
In one embodiment of the utility model, the reasonable wrap angle α 1 is set between the back roll 4 and the substrate, so that the tension of the substrate is in a proper state when coating is performed, thereby ensuring that the coating is not uneven when the coating is performed on the substrate, improving the coating effect of the coating and improving the practicability of the utility model.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a lithium battery pole piece coating preheating device for the coating machine carries out the coating to lithium battery pole piece substrate and preheats the operation, includes unwinding mechanism, coating mechanism, stoving mechanism and the winding mechanism that the line direction set gradually along the substrate, its characterized in that, coating mechanism with it preheats the subassembly to be provided with between the stoving mechanism, it is used for preheating the substrate after the coating to preheat the subassembly, it contacts with the wet coating relative another surface of substrate to preheat the subassembly.
2. The lithium battery pole piece coating preheating device of claim 1, characterized in that: and a transition roller and a back roller for reversing the substrate are also arranged between the unreeling mechanism and the coating mechanism.
3. The coating preheating device for the lithium battery pole piece according to any one of claims 1 to 2, characterized in that: the preheating assembly comprises a plurality of first heating rollers and a plurality of second heating rollers, the first heating rollers are uniformly distributed along the wiring direction of the base material, and the second heating rollers and the first heating rollers are distributed at intervals.
4. The preheating device for coating the pole piece of the lithium battery as claimed in claim 3, wherein: the preheating assembly further comprises a heat source connected with each of the first heating rollers and each of the second heating rollers.
5. The lithium battery pole piece coating preheating device of claim 3, characterized in that: at least one second heating roller is arranged between two adjacent first heating rollers.
6. The lithium battery pole piece coating preheating device of claim 3, characterized in that: each of the first heated rollers has a wrap angle α 2 with the substrate.
7. The lithium battery pole piece coating preheating device of claim 4, characterized in that: the working temperature of the heat source is not higher than that of the drying mechanism.
8. The lithium battery pole piece coating preheating device of claim 2, characterized in that: the backing roll is opposite the coating head of the coating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220105932.2U CN216857277U (en) | 2022-01-14 | 2022-01-14 | Lithium battery pole piece coating preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220105932.2U CN216857277U (en) | 2022-01-14 | 2022-01-14 | Lithium battery pole piece coating preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216857277U true CN216857277U (en) | 2022-07-01 |
Family
ID=82150671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220105932.2U Active CN216857277U (en) | 2022-01-14 | 2022-01-14 | Lithium battery pole piece coating preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216857277U (en) |
-
2022
- 2022-01-14 CN CN202220105932.2U patent/CN216857277U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216857277U (en) | Lithium battery pole piece coating preheating device | |
| JP3897456B2 (en) | Drying equipment | |
| CN104117465A (en) | Coating equipment for fabric flame retardant coating layer | |
| CN114367414B (en) | Coating and heating process and equipment for lithium battery pole piece | |
| CN204866381U (en) | Secondary cell pole piece coating unit | |
| KR20090099032A (en) | Heating roller apparatus for coating machine having direct heating means | |
| CN102321959A (en) | Fabric sizing machine | |
| CN217369030U (en) | Multiple preheating device of lithium-ion battery pole piece coating | |
| CN103008176A (en) | Coating method and system of coating film meeting requirements of sandwich food package and coated with PVDC (Polyvinyl Dichloride) emulsion on double faces | |
| CN210449707U (en) | Preheating coating machine | |
| CN213772723U (en) | High-speed air drying equipment for papermaking | |
| CN205529637U (en) | Artificial imitation leather leather coating drying device | |
| CN212708499U (en) | Multi-roller continuous high-speed transfer machine | |
| CN109881534B (en) | High-efficient digital thermal transfer paper production facility | |
| CN212431639U (en) | Drying equipment for producing polyester composite yarns | |
| CN104107785A (en) | Middle glue spreading device improving flame-retardant effect of flame-retardant coating | |
| CN209918226U (en) | Coating machine | |
| CN203955458U (en) | A kind of middle gum coating apparatus that improves flame retardant coating flame retardant effect | |
| CN103991300A (en) | Laser-engraving transfer printing technology | |
| CN112510267A (en) | Winding method of battery cell pole piece and battery cell preparation method | |
| CN206526996U (en) | The anti-condensation web feed of colloidal sol coats dryer automatically | |
| CN110328103A (en) | Preheat coating machine and preheating coating method | |
| CN220611105U (en) | Novel lithium battery pole piece coating device | |
| CN210411340U (en) | Double-roller type coating machine | |
| CN210657555U (en) | Fabric coating machine with drying structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |